xref: /illumos-gate/usr/src/cmd/ztest/ztest.c (revision c3d26abc)
1fa9e4066Sahrens /*
2fa9e4066Sahrens  * CDDL HEADER START
3fa9e4066Sahrens  *
4fa9e4066Sahrens  * The contents of this file are subject to the terms of the
5441d80aaSlling  * Common Development and Distribution License (the "License").
6441d80aaSlling  * You may not use this file except in compliance with the License.
7fa9e4066Sahrens  *
8fa9e4066Sahrens  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9fa9e4066Sahrens  * or http://www.opensolaris.org/os/licensing.
10fa9e4066Sahrens  * See the License for the specific language governing permissions
11fa9e4066Sahrens  * and limitations under the License.
12fa9e4066Sahrens  *
13fa9e4066Sahrens  * When distributing Covered Code, include this CDDL HEADER in each
14fa9e4066Sahrens  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15fa9e4066Sahrens  * If applicable, add the following below this CDDL HEADER, with the
16fa9e4066Sahrens  * fields enclosed by brackets "[]" replaced with your own identifying
17fa9e4066Sahrens  * information: Portions Copyright [yyyy] [name of copyright owner]
18fa9e4066Sahrens  *
19fa9e4066Sahrens  * CDDL HEADER END
20fa9e4066Sahrens  */
21fa9e4066Sahrens /*
2247cb52daSJeff Bonwick  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
2381cd5c55SMatthew Ahrens  * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
24e9103aaeSGarrett D'Amore  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
25a7a845e4SSteven Hartland  * Copyright (c) 2013 Steven Hartland. All rights reserved.
26*c3d26abcSMatthew Ahrens  * Copyright (c) 2014 Integros [integros.com]
27fa9e4066Sahrens  */
28fa9e4066Sahrens 
29fa9e4066Sahrens /*
30fa9e4066Sahrens  * The objective of this program is to provide a DMU/ZAP/SPA stress test
31fa9e4066Sahrens  * that runs entirely in userland, is easy to use, and easy to extend.
32fa9e4066Sahrens  *
33fa9e4066Sahrens  * The overall design of the ztest program is as follows:
34fa9e4066Sahrens  *
35fa9e4066Sahrens  * (1) For each major functional area (e.g. adding vdevs to a pool,
36fa9e4066Sahrens  *     creating and destroying datasets, reading and writing objects, etc)
37fa9e4066Sahrens  *     we have a simple routine to test that functionality.  These
38fa9e4066Sahrens  *     individual routines do not have to do anything "stressful".
39fa9e4066Sahrens  *
40fa9e4066Sahrens  * (2) We turn these simple functionality tests into a stress test by
41fa9e4066Sahrens  *     running them all in parallel, with as many threads as desired,
42fa9e4066Sahrens  *     and spread across as many datasets, objects, and vdevs as desired.
43fa9e4066Sahrens  *
44fa9e4066Sahrens  * (3) While all this is happening, we inject faults into the pool to
45fa9e4066Sahrens  *     verify that self-healing data really works.
46fa9e4066Sahrens  *
47fa9e4066Sahrens  * (4) Every time we open a dataset, we change its checksum and compression
48fa9e4066Sahrens  *     functions.  Thus even individual objects vary from block to block
49fa9e4066Sahrens  *     in which checksum they use and whether they're compressed.
50fa9e4066Sahrens  *
51fa9e4066Sahrens  * (5) To verify that we never lose on-disk consistency after a crash,
52fa9e4066Sahrens  *     we run the entire test in a child of the main process.
53fa9e4066Sahrens  *     At random times, the child self-immolates with a SIGKILL.
54fa9e4066Sahrens  *     This is the software equivalent of pulling the power cord.
55fa9e4066Sahrens  *     The parent then runs the test again, using the existing
565d7b4d43SMatthew Ahrens  *     storage pool, as many times as desired. If backwards compatibility
57420dfc95SChris Siden  *     testing is enabled ztest will sometimes run the "older" version
58420dfc95SChris Siden  *     of ztest after a SIGKILL.
59fa9e4066Sahrens  *
60fa9e4066Sahrens  * (6) To verify that we don't have future leaks or temporal incursions,
61fa9e4066Sahrens  *     many of the functional tests record the transaction group number
62fa9e4066Sahrens  *     as part of their data.  When reading old data, they verify that
63fa9e4066Sahrens  *     the transaction group number is less than the current, open txg.
64fa9e4066Sahrens  *     If you add a new test, please do this if applicable.
65fa9e4066Sahrens  *
66fa9e4066Sahrens  * When run with no arguments, ztest runs for about five minutes and
67fa9e4066Sahrens  * produces no output if successful.  To get a little bit of information,
68fa9e4066Sahrens  * specify -V.  To get more information, specify -VV, and so on.
69fa9e4066Sahrens  *
70fa9e4066Sahrens  * To turn this into an overnight stress test, use -T to specify run time.
71fa9e4066Sahrens  *
72fa9e4066Sahrens  * You can ask more more vdevs [-v], datasets [-d], or threads [-t]
73fa9e4066Sahrens  * to increase the pool capacity, fanout, and overall stress level.
74fa9e4066Sahrens  *
75420dfc95SChris Siden  * Use the -k option to set the desired frequency of kills.
76420dfc95SChris Siden  *
77420dfc95SChris Siden  * When ztest invokes itself it passes all relevant information through a
78420dfc95SChris Siden  * temporary file which is mmap-ed in the child process. This allows shared
79420dfc95SChris Siden  * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always
80420dfc95SChris Siden  * stored at offset 0 of this file and contains information on the size and
81420dfc95SChris Siden  * number of shared structures in the file. The information stored in this file
82420dfc95SChris Siden  * must remain backwards compatible with older versions of ztest so that
83420dfc95SChris Siden  * ztest can invoke them during backwards compatibility testing (-B).
84fa9e4066Sahrens  */
85fa9e4066Sahrens 
86fa9e4066Sahrens #include <sys/zfs_context.h>
87fa9e4066Sahrens #include <sys/spa.h>
88fa9e4066Sahrens #include <sys/dmu.h>
89fa9e4066Sahrens #include <sys/txg.h>
902fdbea25SAleksandr Guzovskiy #include <sys/dbuf.h>
91fa9e4066Sahrens #include <sys/zap.h>
92fa9e4066Sahrens #include <sys/dmu_objset.h>
93fa9e4066Sahrens #include <sys/poll.h>
94fa9e4066Sahrens #include <sys/stat.h>
95fa9e4066Sahrens #include <sys/time.h>
96fa9e4066Sahrens #include <sys/wait.h>
97fa9e4066Sahrens #include <sys/mman.h>
98fa9e4066Sahrens #include <sys/resource.h>
99fa9e4066Sahrens #include <sys/zio.h>
100fa9e4066Sahrens #include <sys/zil.h>
101b24ab676SJeff Bonwick #include <sys/zil_impl.h>
102fa9e4066Sahrens #include <sys/vdev_impl.h>
103e14bb325SJeff Bonwick #include <sys/vdev_file.h>
104fa9e4066Sahrens #include <sys/spa_impl.h>
10588ecc943SGeorge Wilson #include <sys/metaslab_impl.h>
106fa9e4066Sahrens #include <sys/dsl_prop.h>
1074f5064b7SMark J Musante #include <sys/dsl_dataset.h>
1083b2aab18SMatthew Ahrens #include <sys/dsl_destroy.h>
1093f9d6ad7SLin Ling #include <sys/dsl_scan.h>
110cde58dbcSMatthew Ahrens #include <sys/zio_checksum.h>
111fa9e4066Sahrens #include <sys/refcount.h>
112ad135b5dSChristopher Siden #include <sys/zfeature.h>
1133b2aab18SMatthew Ahrens #include <sys/dsl_userhold.h>
114fa9e4066Sahrens #include <stdio.h>
115004388ebScasper #include <stdio_ext.h>
116fa9e4066Sahrens #include <stdlib.h>
117fa9e4066Sahrens #include <unistd.h>
118fa9e4066Sahrens #include <signal.h>
119fa9e4066Sahrens #include <umem.h>
120fa9e4066Sahrens #include <dlfcn.h>
121fa9e4066Sahrens #include <ctype.h>
122fa9e4066Sahrens #include <math.h>
123fa9e4066Sahrens #include <sys/fs/zfs.h>
124b24ab676SJeff Bonwick #include <libnvpair.h>
125fa9e4066Sahrens 
126741652b0SEtienne Dechamps static int ztest_fd_data = -1;
127741652b0SEtienne Dechamps static int ztest_fd_rand = -1;
128420dfc95SChris Siden 
129420dfc95SChris Siden typedef struct ztest_shared_hdr {
130420dfc95SChris Siden 	uint64_t	zh_hdr_size;
131420dfc95SChris Siden 	uint64_t	zh_opts_size;
132420dfc95SChris Siden 	uint64_t	zh_size;
133420dfc95SChris Siden 	uint64_t	zh_stats_size;
134420dfc95SChris Siden 	uint64_t	zh_stats_count;
135420dfc95SChris Siden 	uint64_t	zh_ds_size;
136420dfc95SChris Siden 	uint64_t	zh_ds_count;
137420dfc95SChris Siden } ztest_shared_hdr_t;
138420dfc95SChris Siden 
139420dfc95SChris Siden static ztest_shared_hdr_t *ztest_shared_hdr;
140420dfc95SChris Siden 
141420dfc95SChris Siden typedef struct ztest_shared_opts {
142420dfc95SChris Siden 	char zo_pool[MAXNAMELEN];
143420dfc95SChris Siden 	char zo_dir[MAXNAMELEN];
144420dfc95SChris Siden 	char zo_alt_ztest[MAXNAMELEN];
145420dfc95SChris Siden 	char zo_alt_libpath[MAXNAMELEN];
146420dfc95SChris Siden 	uint64_t zo_vdevs;
147420dfc95SChris Siden 	uint64_t zo_vdevtime;
148420dfc95SChris Siden 	size_t zo_vdev_size;
149420dfc95SChris Siden 	int zo_ashift;
150420dfc95SChris Siden 	int zo_mirrors;
151420dfc95SChris Siden 	int zo_raidz;
152420dfc95SChris Siden 	int zo_raidz_parity;
153420dfc95SChris Siden 	int zo_datasets;
154420dfc95SChris Siden 	int zo_threads;
155420dfc95SChris Siden 	uint64_t zo_passtime;
156420dfc95SChris Siden 	uint64_t zo_killrate;
157420dfc95SChris Siden 	int zo_verbose;
158420dfc95SChris Siden 	int zo_init;
159420dfc95SChris Siden 	uint64_t zo_time;
160420dfc95SChris Siden 	uint64_t zo_maxloops;
161420dfc95SChris Siden 	uint64_t zo_metaslab_gang_bang;
162420dfc95SChris Siden } ztest_shared_opts_t;
163420dfc95SChris Siden 
164420dfc95SChris Siden static const ztest_shared_opts_t ztest_opts_defaults = {
165420dfc95SChris Siden 	.zo_pool = { 'z', 't', 'e', 's', 't', '\0' },
166420dfc95SChris Siden 	.zo_dir = { '/', 't', 'm', 'p', '\0' },
167420dfc95SChris Siden 	.zo_alt_ztest = { '\0' },
168420dfc95SChris Siden 	.zo_alt_libpath = { '\0' },
169420dfc95SChris Siden 	.zo_vdevs = 5,
170420dfc95SChris Siden 	.zo_ashift = SPA_MINBLOCKSHIFT,
171420dfc95SChris Siden 	.zo_mirrors = 2,
172420dfc95SChris Siden 	.zo_raidz = 4,
173420dfc95SChris Siden 	.zo_raidz_parity = 1,
174539eed8aSMatthew Ahrens 	.zo_vdev_size = SPA_MINDEVSIZE * 2,
175420dfc95SChris Siden 	.zo_datasets = 7,
176420dfc95SChris Siden 	.zo_threads = 23,
177420dfc95SChris Siden 	.zo_passtime = 60,		/* 60 seconds */
178420dfc95SChris Siden 	.zo_killrate = 70,		/* 70% kill rate */
179420dfc95SChris Siden 	.zo_verbose = 0,
180420dfc95SChris Siden 	.zo_init = 1,
181420dfc95SChris Siden 	.zo_time = 300,			/* 5 minutes */
182420dfc95SChris Siden 	.zo_maxloops = 50,		/* max loops during spa_freeze() */
183420dfc95SChris Siden 	.zo_metaslab_gang_bang = 32 << 10
184420dfc95SChris Siden };
185420dfc95SChris Siden 
186420dfc95SChris Siden extern uint64_t metaslab_gang_bang;
187420dfc95SChris Siden extern uint64_t metaslab_df_alloc_threshold;
18869962b56SMatthew Ahrens extern uint64_t zfs_deadman_synctime_ms;
18930beaff4SGeorge Wilson extern int metaslab_preload_limit;
190420dfc95SChris Siden 
191420dfc95SChris Siden static ztest_shared_opts_t *ztest_shared_opts;
192420dfc95SChris Siden static ztest_shared_opts_t ztest_opts;
193420dfc95SChris Siden 
194420dfc95SChris Siden typedef struct ztest_shared_ds {
195420dfc95SChris Siden 	uint64_t	zd_seq;
196420dfc95SChris Siden } ztest_shared_ds_t;
197420dfc95SChris Siden 
198420dfc95SChris Siden static ztest_shared_ds_t *ztest_shared_ds;
199420dfc95SChris Siden #define	ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d])
200fa9e4066Sahrens 
201b24ab676SJeff Bonwick #define	BT_MAGIC	0x123456789abcdefULL
202420dfc95SChris Siden #define	MAXFAULTS() \
203420dfc95SChris Siden 	(MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1)
204b24ab676SJeff Bonwick 
205b24ab676SJeff Bonwick enum ztest_io_type {
206b24ab676SJeff Bonwick 	ZTEST_IO_WRITE_TAG,
207b24ab676SJeff Bonwick 	ZTEST_IO_WRITE_PATTERN,
208b24ab676SJeff Bonwick 	ZTEST_IO_WRITE_ZEROES,
209b24ab676SJeff Bonwick 	ZTEST_IO_TRUNCATE,
210b24ab676SJeff Bonwick 	ZTEST_IO_SETATTR,
21180901aeaSGeorge Wilson 	ZTEST_IO_REWRITE,
212b24ab676SJeff Bonwick 	ZTEST_IO_TYPES
213b24ab676SJeff Bonwick };
214b24ab676SJeff Bonwick 
215e05725b1Sbonwick typedef struct ztest_block_tag {
216b24ab676SJeff Bonwick 	uint64_t	bt_magic;
217e05725b1Sbonwick 	uint64_t	bt_objset;
218e05725b1Sbonwick 	uint64_t	bt_object;
219e05725b1Sbonwick 	uint64_t	bt_offset;
220b24ab676SJeff Bonwick 	uint64_t	bt_gen;
221e05725b1Sbonwick 	uint64_t	bt_txg;
222b24ab676SJeff Bonwick 	uint64_t	bt_crtxg;
223e05725b1Sbonwick } ztest_block_tag_t;
224e05725b1Sbonwick 
225b24ab676SJeff Bonwick typedef struct bufwad {
226b24ab676SJeff Bonwick 	uint64_t	bw_index;
227b24ab676SJeff Bonwick 	uint64_t	bw_txg;
228b24ab676SJeff Bonwick 	uint64_t	bw_data;
229b24ab676SJeff Bonwick } bufwad_t;
230b24ab676SJeff Bonwick 
231b24ab676SJeff Bonwick /*
232b24ab676SJeff Bonwick  * XXX -- fix zfs range locks to be generic so we can use them here.
233b24ab676SJeff Bonwick  */
234b24ab676SJeff Bonwick typedef enum {
235b24ab676SJeff Bonwick 	RL_READER,
236b24ab676SJeff Bonwick 	RL_WRITER,
237b24ab676SJeff Bonwick 	RL_APPEND
238b24ab676SJeff Bonwick } rl_type_t;
239b24ab676SJeff Bonwick 
240b24ab676SJeff Bonwick typedef struct rll {
241b24ab676SJeff Bonwick 	void		*rll_writer;
242b24ab676SJeff Bonwick 	int		rll_readers;
243b24ab676SJeff Bonwick 	mutex_t		rll_lock;
244b24ab676SJeff Bonwick 	cond_t		rll_cv;
245b24ab676SJeff Bonwick } rll_t;
246b24ab676SJeff Bonwick 
247b24ab676SJeff Bonwick typedef struct rl {
248b24ab676SJeff Bonwick 	uint64_t	rl_object;
249b24ab676SJeff Bonwick 	uint64_t	rl_offset;
250b24ab676SJeff Bonwick 	uint64_t	rl_size;
251b24ab676SJeff Bonwick 	rll_t		*rl_lock;
252b24ab676SJeff Bonwick } rl_t;
253b24ab676SJeff Bonwick 
254b24ab676SJeff Bonwick #define	ZTEST_RANGE_LOCKS	64
255b24ab676SJeff Bonwick #define	ZTEST_OBJECT_LOCKS	64
256b24ab676SJeff Bonwick 
257b24ab676SJeff Bonwick /*
258b24ab676SJeff Bonwick  * Object descriptor.  Used as a template for object lookup/create/remove.
259b24ab676SJeff Bonwick  */
260b24ab676SJeff Bonwick typedef struct ztest_od {
261b24ab676SJeff Bonwick 	uint64_t	od_dir;
262b24ab676SJeff Bonwick 	uint64_t	od_object;
263b24ab676SJeff Bonwick 	dmu_object_type_t od_type;
264b24ab676SJeff Bonwick 	dmu_object_type_t od_crtype;
265b24ab676SJeff Bonwick 	uint64_t	od_blocksize;
266b24ab676SJeff Bonwick 	uint64_t	od_crblocksize;
267b24ab676SJeff Bonwick 	uint64_t	od_gen;
268b24ab676SJeff Bonwick 	uint64_t	od_crgen;
269b24ab676SJeff Bonwick 	char		od_name[MAXNAMELEN];
270b24ab676SJeff Bonwick } ztest_od_t;
271fa9e4066Sahrens 
272b24ab676SJeff Bonwick /*
273b24ab676SJeff Bonwick  * Per-dataset state.
274b24ab676SJeff Bonwick  */
275b24ab676SJeff Bonwick typedef struct ztest_ds {
276420dfc95SChris Siden 	ztest_shared_ds_t *zd_shared;
277b24ab676SJeff Bonwick 	objset_t	*zd_os;
278c9ba2a43SEric Schrock 	rwlock_t	zd_zilog_lock;
279b24ab676SJeff Bonwick 	zilog_t		*zd_zilog;
280b24ab676SJeff Bonwick 	ztest_od_t	*zd_od;		/* debugging aid */
281b24ab676SJeff Bonwick 	char		zd_name[MAXNAMELEN];
282b24ab676SJeff Bonwick 	mutex_t		zd_dirobj_lock;
283b24ab676SJeff Bonwick 	rll_t		zd_object_lock[ZTEST_OBJECT_LOCKS];
284b24ab676SJeff Bonwick 	rll_t		zd_range_lock[ZTEST_RANGE_LOCKS];
285b24ab676SJeff Bonwick } ztest_ds_t;
286b24ab676SJeff Bonwick 
287b24ab676SJeff Bonwick /*
288b24ab676SJeff Bonwick  * Per-iteration state.
289b24ab676SJeff Bonwick  */
290b24ab676SJeff Bonwick typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
291b24ab676SJeff Bonwick 
292b24ab676SJeff Bonwick typedef struct ztest_info {
293b24ab676SJeff Bonwick 	ztest_func_t	*zi_func;	/* test function */
294b24ab676SJeff Bonwick 	uint64_t	zi_iters;	/* iterations per execution */
295b24ab676SJeff Bonwick 	uint64_t	*zi_interval;	/* execute every <interval> seconds */
296b24ab676SJeff Bonwick } ztest_info_t;
297fa9e4066Sahrens 
298420dfc95SChris Siden typedef struct ztest_shared_callstate {
299420dfc95SChris Siden 	uint64_t	zc_count;	/* per-pass count */
300420dfc95SChris Siden 	uint64_t	zc_time;	/* per-pass time */
301420dfc95SChris Siden 	uint64_t	zc_next;	/* next time to call this function */
302420dfc95SChris Siden } ztest_shared_callstate_t;
303420dfc95SChris Siden 
304420dfc95SChris Siden static ztest_shared_callstate_t *ztest_shared_callstate;
305420dfc95SChris Siden #define	ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c])
306420dfc95SChris Siden 
307fa9e4066Sahrens /*
308fa9e4066Sahrens  * Note: these aren't static because we want dladdr() to work.
309fa9e4066Sahrens  */
310fa9e4066Sahrens ztest_func_t ztest_dmu_read_write;
311fa9e4066Sahrens ztest_func_t ztest_dmu_write_parallel;
312fa9e4066Sahrens ztest_func_t ztest_dmu_object_alloc_free;
313d20e665cSRicardo M. Correia ztest_func_t ztest_dmu_commit_callbacks;
314fa9e4066Sahrens ztest_func_t ztest_zap;
315fa9e4066Sahrens ztest_func_t ztest_zap_parallel;
316b24ab676SJeff Bonwick ztest_func_t ztest_zil_commit;
317c9ba2a43SEric Schrock ztest_func_t ztest_zil_remount;
318b24ab676SJeff Bonwick ztest_func_t ztest_dmu_read_write_zcopy;
319fa9e4066Sahrens ztest_func_t ztest_dmu_objset_create_destroy;
320b24ab676SJeff Bonwick ztest_func_t ztest_dmu_prealloc;
321b24ab676SJeff Bonwick ztest_func_t ztest_fzap;
322fa9e4066Sahrens ztest_func_t ztest_dmu_snapshot_create_destroy;
323b24ab676SJeff Bonwick ztest_func_t ztest_dsl_prop_get_set;
324b24ab676SJeff Bonwick ztest_func_t ztest_spa_prop_get_set;
325fa9e4066Sahrens ztest_func_t ztest_spa_create_destroy;
326fa9e4066Sahrens ztest_func_t ztest_fault_inject;
327b24ab676SJeff Bonwick ztest_func_t ztest_ddt_repair;
328b24ab676SJeff Bonwick ztest_func_t ztest_dmu_snapshot_hold;
329e14bb325SJeff Bonwick ztest_func_t ztest_spa_rename;
330b24ab676SJeff Bonwick ztest_func_t ztest_scrub;
331b24ab676SJeff Bonwick ztest_func_t ztest_dsl_dataset_promote_busy;
332fa9e4066Sahrens ztest_func_t ztest_vdev_attach_detach;
333fa9e4066Sahrens ztest_func_t ztest_vdev_LUN_growth;
334fa9e4066Sahrens ztest_func_t ztest_vdev_add_remove;
335e14bb325SJeff Bonwick ztest_func_t ztest_vdev_aux_add_remove;
3361195e687SMark J Musante ztest_func_t ztest_split_pool;
337e9103aaeSGarrett D'Amore ztest_func_t ztest_reguid;
33825345e46SGeorge Wilson ztest_func_t ztest_spa_upgrade;
339fa9e4066Sahrens 
340b24ab676SJeff Bonwick uint64_t zopt_always = 0ULL * NANOSEC;		/* all the time */
341b24ab676SJeff Bonwick uint64_t zopt_incessant = 1ULL * NANOSEC / 10;	/* every 1/10 second */
342b24ab676SJeff Bonwick uint64_t zopt_often = 1ULL * NANOSEC;		/* every second */
343b24ab676SJeff Bonwick uint64_t zopt_sometimes = 10ULL * NANOSEC;	/* every 10 seconds */
344b24ab676SJeff Bonwick uint64_t zopt_rarely = 60ULL * NANOSEC;		/* every 60 seconds */
345fa9e4066Sahrens 
346fa9e4066Sahrens ztest_info_t ztest_info[] = {
347e05725b1Sbonwick 	{ ztest_dmu_read_write,			1,	&zopt_always	},
348b24ab676SJeff Bonwick 	{ ztest_dmu_write_parallel,		10,	&zopt_always	},
349e05725b1Sbonwick 	{ ztest_dmu_object_alloc_free,		1,	&zopt_always	},
350b24ab676SJeff Bonwick 	{ ztest_dmu_commit_callbacks,		1,	&zopt_always	},
351e05725b1Sbonwick 	{ ztest_zap,				30,	&zopt_always	},
352e05725b1Sbonwick 	{ ztest_zap_parallel,			100,	&zopt_always	},
3531195e687SMark J Musante 	{ ztest_split_pool,			1,	&zopt_always	},
354b24ab676SJeff Bonwick 	{ ztest_zil_commit,			1,	&zopt_incessant	},
355c9ba2a43SEric Schrock 	{ ztest_zil_remount,			1,	&zopt_sometimes	},
356b24ab676SJeff Bonwick 	{ ztest_dmu_read_write_zcopy,		1,	&zopt_often	},
357b24ab676SJeff Bonwick 	{ ztest_dmu_objset_create_destroy,	1,	&zopt_often	},
358b24ab676SJeff Bonwick 	{ ztest_dsl_prop_get_set,		1,	&zopt_often	},
359b24ab676SJeff Bonwick 	{ ztest_spa_prop_get_set,		1,	&zopt_sometimes	},
360b24ab676SJeff Bonwick #if 0
361b24ab676SJeff Bonwick 	{ ztest_dmu_prealloc,			1,	&zopt_sometimes	},
362b24ab676SJeff Bonwick #endif
363b24ab676SJeff Bonwick 	{ ztest_fzap,				1,	&zopt_sometimes	},
364b24ab676SJeff Bonwick 	{ ztest_dmu_snapshot_create_destroy,	1,	&zopt_sometimes	},
365b24ab676SJeff Bonwick 	{ ztest_spa_create_destroy,		1,	&zopt_sometimes	},
366e05725b1Sbonwick 	{ ztest_fault_inject,			1,	&zopt_sometimes	},
367b24ab676SJeff Bonwick 	{ ztest_ddt_repair,			1,	&zopt_sometimes	},
3685c987a37SChris Kirby 	{ ztest_dmu_snapshot_hold,		1,	&zopt_sometimes	},
3692c1e2b44SGeorge Wilson 	{ ztest_reguid,				1,	&zopt_rarely	},
370e05725b1Sbonwick 	{ ztest_spa_rename,			1,	&zopt_rarely	},
371b24ab676SJeff Bonwick 	{ ztest_scrub,				1,	&zopt_rarely	},
37225345e46SGeorge Wilson 	{ ztest_spa_upgrade,			1,	&zopt_rarely	},
373b24ab676SJeff Bonwick 	{ ztest_dsl_dataset_promote_busy,	1,	&zopt_rarely	},
3743b2aab18SMatthew Ahrens 	{ ztest_vdev_attach_detach,		1,	&zopt_sometimes	},
375e14bb325SJeff Bonwick 	{ ztest_vdev_LUN_growth,		1,	&zopt_rarely	},
376420dfc95SChris Siden 	{ ztest_vdev_add_remove,		1,
377420dfc95SChris Siden 	    &ztest_opts.zo_vdevtime				},
378420dfc95SChris Siden 	{ ztest_vdev_aux_add_remove,		1,
379420dfc95SChris Siden 	    &ztest_opts.zo_vdevtime				},
380fa9e4066Sahrens };
381fa9e4066Sahrens 
382fa9e4066Sahrens #define	ZTEST_FUNCS	(sizeof (ztest_info) / sizeof (ztest_info_t))
383fa9e4066Sahrens 
384d20e665cSRicardo M. Correia /*
385d20e665cSRicardo M. Correia  * The following struct is used to hold a list of uncalled commit callbacks.
386d20e665cSRicardo M. Correia  * The callbacks are ordered by txg number.
387d20e665cSRicardo M. Correia  */
388d20e665cSRicardo M. Correia typedef struct ztest_cb_list {
389d20e665cSRicardo M. Correia 	mutex_t	zcl_callbacks_lock;
390d20e665cSRicardo M. Correia 	list_t	zcl_callbacks;
391d20e665cSRicardo M. Correia } ztest_cb_list_t;
392d20e665cSRicardo M. Correia 
393fa9e4066Sahrens /*
394fa9e4066Sahrens  * Stuff we need to share writably between parent and child.
395fa9e4066Sahrens  */
396fa9e4066Sahrens typedef struct ztest_shared {
397420dfc95SChris Siden 	boolean_t	zs_do_init;
398b24ab676SJeff Bonwick 	hrtime_t	zs_proc_start;
399b24ab676SJeff Bonwick 	hrtime_t	zs_proc_stop;
400b24ab676SJeff Bonwick 	hrtime_t	zs_thread_start;
401b24ab676SJeff Bonwick 	hrtime_t	zs_thread_stop;
402b24ab676SJeff Bonwick 	hrtime_t	zs_thread_kill;
403b24ab676SJeff Bonwick 	uint64_t	zs_enospc_count;
40488ecc943SGeorge Wilson 	uint64_t	zs_vdev_next_leaf;
405e14bb325SJeff Bonwick 	uint64_t	zs_vdev_aux;
406fa9e4066Sahrens 	uint64_t	zs_alloc;
407fa9e4066Sahrens 	uint64_t	zs_space;
4081195e687SMark J Musante 	uint64_t	zs_splits;
4091195e687SMark J Musante 	uint64_t	zs_mirrors;
410420dfc95SChris Siden 	uint64_t	zs_metaslab_sz;
411420dfc95SChris Siden 	uint64_t	zs_metaslab_df_alloc_threshold;
412420dfc95SChris Siden 	uint64_t	zs_guid;
413fa9e4066Sahrens } ztest_shared_t;
414fa9e4066Sahrens 
415b24ab676SJeff Bonwick #define	ID_PARALLEL	-1ULL
416b24ab676SJeff Bonwick 
417fa9e4066Sahrens static char ztest_dev_template[] = "%s/%s.%llua";
418e14bb325SJeff Bonwick static char ztest_aux_template[] = "%s/%s.%s.%llu";
419b24ab676SJeff Bonwick ztest_shared_t *ztest_shared;
420fa9e4066Sahrens 
421420dfc95SChris Siden static spa_t *ztest_spa = NULL;
422420dfc95SChris Siden static ztest_ds_t *ztest_ds;
423420dfc95SChris Siden 
424420dfc95SChris Siden static mutex_t ztest_vdev_lock;
425dfbb9432SGeorge Wilson 
426dfbb9432SGeorge Wilson /*
427dfbb9432SGeorge Wilson  * The ztest_name_lock protects the pool and dataset namespace used by
428dfbb9432SGeorge Wilson  * the individual tests. To modify the namespace, consumers must grab
429dfbb9432SGeorge Wilson  * this lock as writer. Grabbing the lock as reader will ensure that the
430dfbb9432SGeorge Wilson  * namespace does not change while the lock is held.
431dfbb9432SGeorge Wilson  */
432420dfc95SChris Siden static rwlock_t ztest_name_lock;
433fa9e4066Sahrens 
434420dfc95SChris Siden static boolean_t ztest_dump_core = B_TRUE;
435e14bb325SJeff Bonwick static boolean_t ztest_exiting;
4360a4e9518Sgw 
437d20e665cSRicardo M. Correia /* Global commit callback list */
438d20e665cSRicardo M. Correia static ztest_cb_list_t zcl;
439d20e665cSRicardo M. Correia 
440b24ab676SJeff Bonwick enum ztest_object {
441b24ab676SJeff Bonwick 	ZTEST_META_DNODE = 0,
442b24ab676SJeff Bonwick 	ZTEST_DIROBJ,
443b24ab676SJeff Bonwick 	ZTEST_OBJECTS
444b24ab676SJeff Bonwick };
445fa9e4066Sahrens 
4461ce825d8Sraf static void usage(boolean_t) __NORETURN;
447f1b4288bSvb 
448fa9e4066Sahrens /*
449fa9e4066Sahrens  * These libumem hooks provide a reasonable set of defaults for the allocator's
450fa9e4066Sahrens  * debugging facilities.
451fa9e4066Sahrens  */
452fa9e4066Sahrens const char *
453fa9e4066Sahrens _umem_debug_init()
454fa9e4066Sahrens {
455fa9e4066Sahrens 	return ("default,verbose"); /* $UMEM_DEBUG setting */
456fa9e4066Sahrens }
457fa9e4066Sahrens 
458fa9e4066Sahrens const char *
459fa9e4066Sahrens _umem_logging_init(void)
460fa9e4066Sahrens {
461fa9e4066Sahrens 	return ("fail,contents"); /* $UMEM_LOGGING setting */
462fa9e4066Sahrens }
463fa9e4066Sahrens 
464fa9e4066Sahrens #define	FATAL_MSG_SZ	1024
465fa9e4066Sahrens 
466fa9e4066Sahrens char *fatal_msg;
467fa9e4066Sahrens 
468fa9e4066Sahrens static void
469fa9e4066Sahrens fatal(int do_perror, char *message, ...)
470fa9e4066Sahrens {
471fa9e4066Sahrens 	va_list args;
472fa9e4066Sahrens 	int save_errno = errno;
473fa9e4066Sahrens 	char buf[FATAL_MSG_SZ];
474fa9e4066Sahrens 
475fa9e4066Sahrens 	(void) fflush(stdout);
476fa9e4066Sahrens 
477fa9e4066Sahrens 	va_start(args, message);
478fa9e4066Sahrens 	(void) sprintf(buf, "ztest: ");
479fa9e4066Sahrens 	/* LINTED */
480fa9e4066Sahrens 	(void) vsprintf(buf + strlen(buf), message, args);
481fa9e4066Sahrens 	va_end(args);
482fa9e4066Sahrens 	if (do_perror) {
483fa9e4066Sahrens 		(void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf),
484fa9e4066Sahrens 		    ": %s", strerror(save_errno));
485fa9e4066Sahrens 	}
486fa9e4066Sahrens 	(void) fprintf(stderr, "%s\n", buf);
487fa9e4066Sahrens 	fatal_msg = buf;			/* to ease debugging */
488fa9e4066Sahrens 	if (ztest_dump_core)
489fa9e4066Sahrens 		abort();
490fa9e4066Sahrens 	exit(3);
491fa9e4066Sahrens }
492fa9e4066Sahrens 
493fa9e4066Sahrens static int
494fa9e4066Sahrens str2shift(const char *buf)
495fa9e4066Sahrens {
496fa9e4066Sahrens 	const char *ends = "BKMGTPEZ";
497fa9e4066Sahrens 	int i;
498fa9e4066Sahrens 
499fa9e4066Sahrens 	if (buf[0] == '\0')
500fa9e4066Sahrens 		return (0);
501fa9e4066Sahrens 	for (i = 0; i < strlen(ends); i++) {
502fa9e4066Sahrens 		if (toupper(buf[0]) == ends[i])
503fa9e4066Sahrens 			break;
504fa9e4066Sahrens 	}
505f1b4288bSvb 	if (i == strlen(ends)) {
506f1b4288bSvb 		(void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n",
507f1b4288bSvb 		    buf);
508f1b4288bSvb 		usage(B_FALSE);
509f1b4288bSvb 	}
510fa9e4066Sahrens 	if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) {
511fa9e4066Sahrens 		return (10*i);
512fa9e4066Sahrens 	}
513f1b4288bSvb 	(void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf);
514f1b4288bSvb 	usage(B_FALSE);
515f1b4288bSvb 	/* NOTREACHED */
516fa9e4066Sahrens }
517fa9e4066Sahrens 
518fa9e4066Sahrens static uint64_t
519fa9e4066Sahrens nicenumtoull(const char *buf)
520fa9e4066Sahrens {
521fa9e4066Sahrens 	char *end;
522fa9e4066Sahrens 	uint64_t val;
523fa9e4066Sahrens 
524fa9e4066Sahrens 	val = strtoull(buf, &end, 0);
525fa9e4066Sahrens 	if (end == buf) {
526f1b4288bSvb 		(void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf);
527f1b4288bSvb 		usage(B_FALSE);
528fa9e4066Sahrens 	} else if (end[0] == '.') {
529fa9e4066Sahrens 		double fval = strtod(buf, &end);
530fa9e4066Sahrens 		fval *= pow(2, str2shift(end));
531f1b4288bSvb 		if (fval > UINT64_MAX) {
532f1b4288bSvb 			(void) fprintf(stderr, "ztest: value too large: %s\n",
533f1b4288bSvb 			    buf);
534f1b4288bSvb 			usage(B_FALSE);
535f1b4288bSvb 		}
536fa9e4066Sahrens 		val = (uint64_t)fval;
537fa9e4066Sahrens 	} else {
538fa9e4066Sahrens 		int shift = str2shift(end);
539f1b4288bSvb 		if (shift >= 64 || (val << shift) >> shift != val) {
540f1b4288bSvb 			(void) fprintf(stderr, "ztest: value too large: %s\n",
541f1b4288bSvb 			    buf);
542f1b4288bSvb 			usage(B_FALSE);
543f1b4288bSvb 		}
544fa9e4066Sahrens 		val <<= shift;
545fa9e4066Sahrens 	}
546fa9e4066Sahrens 	return (val);
547fa9e4066Sahrens }
548fa9e4066Sahrens 
549fa9e4066Sahrens static void
550f1b4288bSvb usage(boolean_t requested)
551fa9e4066Sahrens {
552420dfc95SChris Siden 	const ztest_shared_opts_t *zo = &ztest_opts_defaults;
553420dfc95SChris Siden 
554fa9e4066Sahrens 	char nice_vdev_size[10];
555fa9e4066Sahrens 	char nice_gang_bang[10];
556f1b4288bSvb 	FILE *fp = requested ? stdout : stderr;
557fa9e4066Sahrens 
558420dfc95SChris Siden 	nicenum(zo->zo_vdev_size, nice_vdev_size);
559420dfc95SChris Siden 	nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang);
560fa9e4066Sahrens 
561f1b4288bSvb 	(void) fprintf(fp, "Usage: %s\n"
562fa9e4066Sahrens 	    "\t[-v vdevs (default: %llu)]\n"
563fa9e4066Sahrens 	    "\t[-s size_of_each_vdev (default: %s)]\n"
5642215e990SMark J Musante 	    "\t[-a alignment_shift (default: %d)] use 0 for random\n"
565fa9e4066Sahrens 	    "\t[-m mirror_copies (default: %d)]\n"
566fa9e4066Sahrens 	    "\t[-r raidz_disks (default: %d)]\n"
56799653d4eSeschrock 	    "\t[-R raidz_parity (default: %d)]\n"
568fa9e4066Sahrens 	    "\t[-d datasets (default: %d)]\n"
569fa9e4066Sahrens 	    "\t[-t threads (default: %d)]\n"
570fa9e4066Sahrens 	    "\t[-g gang_block_threshold (default: %s)]\n"
5712215e990SMark J Musante 	    "\t[-i init_count (default: %d)] initialize pool i times\n"
5722215e990SMark J Musante 	    "\t[-k kill_percentage (default: %llu%%)]\n"
573fa9e4066Sahrens 	    "\t[-p pool_name (default: %s)]\n"
5742215e990SMark J Musante 	    "\t[-f dir (default: %s)] file directory for vdev files\n"
5752215e990SMark J Musante 	    "\t[-V] verbose (use multiple times for ever more blather)\n"
5762215e990SMark J Musante 	    "\t[-E] use existing pool instead of creating new one\n"
5772215e990SMark J Musante 	    "\t[-T time (default: %llu sec)] total run time\n"
5782215e990SMark J Musante 	    "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n"
5792215e990SMark J Musante 	    "\t[-P passtime (default: %llu sec)] time per pass\n"
580420dfc95SChris Siden 	    "\t[-B alt_ztest (default: <none>)] alternate ztest path\n"
581f1b4288bSvb 	    "\t[-h] (print help)\n"
582fa9e4066Sahrens 	    "",
583420dfc95SChris Siden 	    zo->zo_pool,
584420dfc95SChris Siden 	    (u_longlong_t)zo->zo_vdevs,			/* -v */
5850a4e9518Sgw 	    nice_vdev_size,				/* -s */
586420dfc95SChris Siden 	    zo->zo_ashift,				/* -a */
587420dfc95SChris Siden 	    zo->zo_mirrors,				/* -m */
588420dfc95SChris Siden 	    zo->zo_raidz,				/* -r */
589420dfc95SChris Siden 	    zo->zo_raidz_parity,			/* -R */
590420dfc95SChris Siden 	    zo->zo_datasets,				/* -d */
591420dfc95SChris Siden 	    zo->zo_threads,				/* -t */
5920a4e9518Sgw 	    nice_gang_bang,				/* -g */
593420dfc95SChris Siden 	    zo->zo_init,				/* -i */
594420dfc95SChris Siden 	    (u_longlong_t)zo->zo_killrate,		/* -k */
595420dfc95SChris Siden 	    zo->zo_pool,				/* -p */
596420dfc95SChris Siden 	    zo->zo_dir,					/* -f */
597420dfc95SChris Siden 	    (u_longlong_t)zo->zo_time,			/* -T */
598420dfc95SChris Siden 	    (u_longlong_t)zo->zo_maxloops,		/* -F */
599420dfc95SChris Siden 	    (u_longlong_t)zo->zo_passtime);
600f1b4288bSvb 	exit(requested ? 0 : 1);
601fa9e4066Sahrens }
602fa9e4066Sahrens 
603fa9e4066Sahrens static void
604fa9e4066Sahrens process_options(int argc, char **argv)
605fa9e4066Sahrens {
606420dfc95SChris Siden 	char *path;
607420dfc95SChris Siden 	ztest_shared_opts_t *zo = &ztest_opts;
608420dfc95SChris Siden 
609fa9e4066Sahrens 	int opt;
610fa9e4066Sahrens 	uint64_t value;
611420dfc95SChris Siden 	char altdir[MAXNAMELEN] = { 0 };
612fa9e4066Sahrens 
613420dfc95SChris Siden 	bcopy(&ztest_opts_defaults, zo, sizeof (*zo));
614fa9e4066Sahrens 
615fa9e4066Sahrens 	while ((opt = getopt(argc, argv,
616420dfc95SChris Siden 	    "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) {
617fa9e4066Sahrens 		value = 0;
618fa9e4066Sahrens 		switch (opt) {
6193d7072f8Seschrock 		case 'v':
6203d7072f8Seschrock 		case 's':
6213d7072f8Seschrock 		case 'a':
6223d7072f8Seschrock 		case 'm':
6233d7072f8Seschrock 		case 'r':
6243d7072f8Seschrock 		case 'R':
6253d7072f8Seschrock 		case 'd':
6263d7072f8Seschrock 		case 't':
6273d7072f8Seschrock 		case 'g':
6283d7072f8Seschrock 		case 'i':
6293d7072f8Seschrock 		case 'k':
6303d7072f8Seschrock 		case 'T':
6313d7072f8Seschrock 		case 'P':
6322215e990SMark J Musante 		case 'F':
633fa9e4066Sahrens 			value = nicenumtoull(optarg);
634fa9e4066Sahrens 		}
635fa9e4066Sahrens 		switch (opt) {
6363d7072f8Seschrock 		case 'v':
637420dfc95SChris Siden 			zo->zo_vdevs = value;
638fa9e4066Sahrens 			break;
6393d7072f8Seschrock 		case 's':
640420dfc95SChris Siden 			zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value);
641fa9e4066Sahrens 			break;
6423d7072f8Seschrock 		case 'a':
643420dfc95SChris Siden 			zo->zo_ashift = value;
644ecc2d604Sbonwick 			break;
6453d7072f8Seschrock 		case 'm':
646420dfc95SChris Siden 			zo->zo_mirrors = value;
647fa9e4066Sahrens 			break;
6483d7072f8Seschrock 		case 'r':
649420dfc95SChris Siden 			zo->zo_raidz = MAX(1, value);
650fa9e4066Sahrens 			break;
6513d7072f8Seschrock 		case 'R':
652420dfc95SChris Siden 			zo->zo_raidz_parity = MIN(MAX(value, 1), 3);
65399653d4eSeschrock 			break;
6543d7072f8Seschrock 		case 'd':
655420dfc95SChris Siden 			zo->zo_datasets = MAX(1, value);
656fa9e4066Sahrens 			break;
6573d7072f8Seschrock 		case 't':
658420dfc95SChris Siden 			zo->zo_threads = MAX(1, value);
659fa9e4066Sahrens 			break;
6603d7072f8Seschrock 		case 'g':
661420dfc95SChris Siden 			zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1,
662420dfc95SChris Siden 			    value);
663fa9e4066Sahrens 			break;
6643d7072f8Seschrock 		case 'i':
665420dfc95SChris Siden 			zo->zo_init = value;
666fa9e4066Sahrens 			break;
6673d7072f8Seschrock 		case 'k':
668420dfc95SChris Siden 			zo->zo_killrate = value;
669fa9e4066Sahrens 			break;
6703d7072f8Seschrock 		case 'p':
671420dfc95SChris Siden 			(void) strlcpy(zo->zo_pool, optarg,
672420dfc95SChris Siden 			    sizeof (zo->zo_pool));
673fa9e4066Sahrens 			break;
6743d7072f8Seschrock 		case 'f':
675420dfc95SChris Siden 			path = realpath(optarg, NULL);
676420dfc95SChris Siden 			if (path == NULL) {
677420dfc95SChris Siden 				(void) fprintf(stderr, "error: %s: %s\n",
678420dfc95SChris Siden 				    optarg, strerror(errno));
679420dfc95SChris Siden 				usage(B_FALSE);
680420dfc95SChris Siden 			} else {
681420dfc95SChris Siden 				(void) strlcpy(zo->zo_dir, path,
682420dfc95SChris Siden 				    sizeof (zo->zo_dir));
683420dfc95SChris Siden 			}
684fa9e4066Sahrens 			break;
6853d7072f8Seschrock 		case 'V':
686420dfc95SChris Siden 			zo->zo_verbose++;
687fa9e4066Sahrens 			break;
6883d7072f8Seschrock 		case 'E':
689420dfc95SChris Siden 			zo->zo_init = 0;
690fa9e4066Sahrens 			break;
6913d7072f8Seschrock 		case 'T':
692420dfc95SChris Siden 			zo->zo_time = value;
693fa9e4066Sahrens 			break;
6943d7072f8Seschrock 		case 'P':
695420dfc95SChris Siden 			zo->zo_passtime = MAX(1, value);
696fa9e4066Sahrens 			break;
6972215e990SMark J Musante 		case 'F':
698420dfc95SChris Siden 			zo->zo_maxloops = MAX(1, value);
699420dfc95SChris Siden 			break;
700420dfc95SChris Siden 		case 'B':
701420dfc95SChris Siden 			(void) strlcpy(altdir, optarg, sizeof (altdir));
7022215e990SMark J Musante 			break;
7033d7072f8Seschrock 		case 'h':
704f1b4288bSvb 			usage(B_TRUE);
705f1b4288bSvb 			break;
7063d7072f8Seschrock 		case '?':
7073d7072f8Seschrock 		default:
708f1b4288bSvb 			usage(B_FALSE);
709fa9e4066Sahrens 			break;
710fa9e4066Sahrens 		}
711fa9e4066Sahrens 	}
712fa9e4066Sahrens 
713420dfc95SChris Siden 	zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1);
71499653d4eSeschrock 
715420dfc95SChris Siden 	zo->zo_vdevtime =
716420dfc95SChris Siden 	    (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
717b24ab676SJeff Bonwick 	    UINT64_MAX >> 2);
718420dfc95SChris Siden 
719420dfc95SChris Siden 	if (strlen(altdir) > 0) {
720741652b0SEtienne Dechamps 		char *cmd;
721741652b0SEtienne Dechamps 		char *realaltdir;
722420dfc95SChris Siden 		char *bin;
723420dfc95SChris Siden 		char *ztest;
724420dfc95SChris Siden 		char *isa;
725420dfc95SChris Siden 		int isalen;
726420dfc95SChris Siden 
727741652b0SEtienne Dechamps 		cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
728741652b0SEtienne Dechamps 		realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
729741652b0SEtienne Dechamps 
730741652b0SEtienne Dechamps 		VERIFY(NULL != realpath(getexecname(), cmd));
731420dfc95SChris Siden 		if (0 != access(altdir, F_OK)) {
732420dfc95SChris Siden 			ztest_dump_core = B_FALSE;
733420dfc95SChris Siden 			fatal(B_TRUE, "invalid alternate ztest path: %s",
734420dfc95SChris Siden 			    altdir);
735420dfc95SChris Siden 		}
736420dfc95SChris Siden 		VERIFY(NULL != realpath(altdir, realaltdir));
737420dfc95SChris Siden 
738420dfc95SChris Siden 		/*
739420dfc95SChris Siden 		 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest".
740420dfc95SChris Siden 		 * We want to extract <isa> to determine if we should use
741420dfc95SChris Siden 		 * 32 or 64 bit binaries.
742420dfc95SChris Siden 		 */
743420dfc95SChris Siden 		bin = strstr(cmd, "/usr/bin/");
744420dfc95SChris Siden 		ztest = strstr(bin, "/ztest");
745420dfc95SChris Siden 		isa = bin + 9;
746420dfc95SChris Siden 		isalen = ztest - isa;
747420dfc95SChris Siden 		(void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest),
748420dfc95SChris Siden 		    "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa);
749420dfc95SChris Siden 		(void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath),
750420dfc95SChris Siden 		    "%s/usr/lib/%.*s", realaltdir, isalen, isa);
751420dfc95SChris Siden 
752420dfc95SChris Siden 		if (0 != access(zo->zo_alt_ztest, X_OK)) {
753420dfc95SChris Siden 			ztest_dump_core = B_FALSE;
754420dfc95SChris Siden 			fatal(B_TRUE, "invalid alternate ztest: %s",
755420dfc95SChris Siden 			    zo->zo_alt_ztest);
756420dfc95SChris Siden 		} else if (0 != access(zo->zo_alt_libpath, X_OK)) {
757420dfc95SChris Siden 			ztest_dump_core = B_FALSE;
758420dfc95SChris Siden 			fatal(B_TRUE, "invalid alternate lib directory %s",
759420dfc95SChris Siden 			    zo->zo_alt_libpath);
760420dfc95SChris Siden 		}
761741652b0SEtienne Dechamps 
762741652b0SEtienne Dechamps 		umem_free(cmd, MAXPATHLEN);
763741652b0SEtienne Dechamps 		umem_free(realaltdir, MAXPATHLEN);
764420dfc95SChris Siden 	}
765fa9e4066Sahrens }
766fa9e4066Sahrens 
767b24ab676SJeff Bonwick static void
768b24ab676SJeff Bonwick ztest_kill(ztest_shared_t *zs)
769b24ab676SJeff Bonwick {
770420dfc95SChris Siden 	zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa));
771420dfc95SChris Siden 	zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa));
772b4952e17SGeorge Wilson 
773b4952e17SGeorge Wilson 	/*
774b4952e17SGeorge Wilson 	 * Before we kill off ztest, make sure that the config is updated.
775b4952e17SGeorge Wilson 	 * See comment above spa_config_sync().
776b4952e17SGeorge Wilson 	 */
777b4952e17SGeorge Wilson 	mutex_enter(&spa_namespace_lock);
778b4952e17SGeorge Wilson 	spa_config_sync(ztest_spa, B_FALSE, B_FALSE);
779b4952e17SGeorge Wilson 	mutex_exit(&spa_namespace_lock);
780b4952e17SGeorge Wilson 
781b4952e17SGeorge Wilson 	zfs_dbgmsg_print(FTAG);
782b24ab676SJeff Bonwick 	(void) kill(getpid(), SIGKILL);
783b24ab676SJeff Bonwick }
784b24ab676SJeff Bonwick 
785b24ab676SJeff Bonwick static uint64_t
786b24ab676SJeff Bonwick ztest_random(uint64_t range)
787b24ab676SJeff Bonwick {
788b24ab676SJeff Bonwick 	uint64_t r;
789b24ab676SJeff Bonwick 
790741652b0SEtienne Dechamps 	ASSERT3S(ztest_fd_rand, >=, 0);
791741652b0SEtienne Dechamps 
792b24ab676SJeff Bonwick 	if (range == 0)
793b24ab676SJeff Bonwick 		return (0);
794b24ab676SJeff Bonwick 
795741652b0SEtienne Dechamps 	if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r))
796b24ab676SJeff Bonwick 		fatal(1, "short read from /dev/urandom");
797b24ab676SJeff Bonwick 
798b24ab676SJeff Bonwick 	return (r % range);
799b24ab676SJeff Bonwick }
800b24ab676SJeff Bonwick 
801b24ab676SJeff Bonwick /* ARGSUSED */
802b24ab676SJeff Bonwick static void
803b24ab676SJeff Bonwick ztest_record_enospc(const char *s)
804b24ab676SJeff Bonwick {
805b24ab676SJeff Bonwick 	ztest_shared->zs_enospc_count++;
806b24ab676SJeff Bonwick }
807b24ab676SJeff Bonwick 
808ecc2d604Sbonwick static uint64_t
809ecc2d604Sbonwick ztest_get_ashift(void)
810ecc2d604Sbonwick {
811420dfc95SChris Siden 	if (ztest_opts.zo_ashift == 0)
8122a104a52SAlex Reece 		return (SPA_MINBLOCKSHIFT + ztest_random(5));
813420dfc95SChris Siden 	return (ztest_opts.zo_ashift);
814ecc2d604Sbonwick }
815ecc2d604Sbonwick 
816fa9e4066Sahrens static nvlist_t *
81725345e46SGeorge Wilson make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift)
818fa9e4066Sahrens {
819e14bb325SJeff Bonwick 	char pathbuf[MAXPATHLEN];
820fa9e4066Sahrens 	uint64_t vdev;
821fa9e4066Sahrens 	nvlist_t *file;
822fa9e4066Sahrens 
823e14bb325SJeff Bonwick 	if (ashift == 0)
824e14bb325SJeff Bonwick 		ashift = ztest_get_ashift();
825e14bb325SJeff Bonwick 
826e14bb325SJeff Bonwick 	if (path == NULL) {
827e14bb325SJeff Bonwick 		path = pathbuf;
828fa9e4066Sahrens 
829e14bb325SJeff Bonwick 		if (aux != NULL) {
830e14bb325SJeff Bonwick 			vdev = ztest_shared->zs_vdev_aux;
831420dfc95SChris Siden 			(void) snprintf(path, sizeof (pathbuf),
832420dfc95SChris Siden 			    ztest_aux_template, ztest_opts.zo_dir,
83325345e46SGeorge Wilson 			    pool == NULL ? ztest_opts.zo_pool : pool,
83425345e46SGeorge Wilson 			    aux, vdev);
835e14bb325SJeff Bonwick 		} else {
83688ecc943SGeorge Wilson 			vdev = ztest_shared->zs_vdev_next_leaf++;
837420dfc95SChris Siden 			(void) snprintf(path, sizeof (pathbuf),
838420dfc95SChris Siden 			    ztest_dev_template, ztest_opts.zo_dir,
83925345e46SGeorge Wilson 			    pool == NULL ? ztest_opts.zo_pool : pool, vdev);
840e14bb325SJeff Bonwick 		}
841e14bb325SJeff Bonwick 	}
842e14bb325SJeff Bonwick 
843e14bb325SJeff Bonwick 	if (size != 0) {
844e14bb325SJeff Bonwick 		int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
845fa9e4066Sahrens 		if (fd == -1)
846e14bb325SJeff Bonwick 			fatal(1, "can't open %s", path);
847fa9e4066Sahrens 		if (ftruncate(fd, size) != 0)
848e14bb325SJeff Bonwick 			fatal(1, "can't ftruncate %s", path);
849fa9e4066Sahrens 		(void) close(fd);
850fa9e4066Sahrens 	}
851fa9e4066Sahrens 
852fa9e4066Sahrens 	VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0);
853fa9e4066Sahrens 	VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0);
854e14bb325SJeff Bonwick 	VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0);
855ecc2d604Sbonwick 	VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0);
856fa9e4066Sahrens 
857fa9e4066Sahrens 	return (file);
858fa9e4066Sahrens }
859fa9e4066Sahrens 
860fa9e4066Sahrens static nvlist_t *
86125345e46SGeorge Wilson make_vdev_raidz(char *path, char *aux, char *pool, size_t size,
86225345e46SGeorge Wilson     uint64_t ashift, int r)
863fa9e4066Sahrens {
864fa9e4066Sahrens 	nvlist_t *raidz, **child;
865fa9e4066Sahrens 	int c;
866fa9e4066Sahrens 
867fa9e4066Sahrens 	if (r < 2)
86825345e46SGeorge Wilson 		return (make_vdev_file(path, aux, pool, size, ashift));
869fa9e4066Sahrens 	child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
870fa9e4066Sahrens 
871fa9e4066Sahrens 	for (c = 0; c < r; c++)
87225345e46SGeorge Wilson 		child[c] = make_vdev_file(path, aux, pool, size, ashift);
873fa9e4066Sahrens 
874fa9e4066Sahrens 	VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0);
875fa9e4066Sahrens 	VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE,
876fa9e4066Sahrens 	    VDEV_TYPE_RAIDZ) == 0);
87799653d4eSeschrock 	VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY,
878420dfc95SChris Siden 	    ztest_opts.zo_raidz_parity) == 0);
879fa9e4066Sahrens 	VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN,
880fa9e4066Sahrens 	    child, r) == 0);
881fa9e4066Sahrens 
882fa9e4066Sahrens 	for (c = 0; c < r; c++)
883fa9e4066Sahrens 		nvlist_free(child[c]);
884fa9e4066Sahrens 
885fa9e4066Sahrens 	umem_free(child, r * sizeof (nvlist_t *));
886fa9e4066Sahrens 
887fa9e4066Sahrens 	return (raidz);
888fa9e4066Sahrens }
889fa9e4066Sahrens 
890fa9e4066Sahrens static nvlist_t *
89125345e46SGeorge Wilson make_vdev_mirror(char *path, char *aux, char *pool, size_t size,
89225345e46SGeorge Wilson     uint64_t ashift, int r, int m)
893fa9e4066Sahrens {
894fa9e4066Sahrens 	nvlist_t *mirror, **child;
895fa9e4066Sahrens 	int c;
896fa9e4066Sahrens 
897fa9e4066Sahrens 	if (m < 1)
89825345e46SGeorge Wilson 		return (make_vdev_raidz(path, aux, pool, size, ashift, r));
899fa9e4066Sahrens 
900fa9e4066Sahrens 	child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL);
901fa9e4066Sahrens 
902fa9e4066Sahrens 	for (c = 0; c < m; c++)
90325345e46SGeorge Wilson 		child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r);
904fa9e4066Sahrens 
905fa9e4066Sahrens 	VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0);
906fa9e4066Sahrens 	VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE,
907fa9e4066Sahrens 	    VDEV_TYPE_MIRROR) == 0);
908fa9e4066Sahrens 	VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
909fa9e4066Sahrens 	    child, m) == 0);
910fa9e4066Sahrens 
911fa9e4066Sahrens 	for (c = 0; c < m; c++)
912fa9e4066Sahrens 		nvlist_free(child[c]);
913fa9e4066Sahrens 
914fa9e4066Sahrens 	umem_free(child, m * sizeof (nvlist_t *));
915fa9e4066Sahrens 
916fa9e4066Sahrens 	return (mirror);
917fa9e4066Sahrens }
918fa9e4066Sahrens 
919fa9e4066Sahrens static nvlist_t *
92025345e46SGeorge Wilson make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift,
92125345e46SGeorge Wilson     int log, int r, int m, int t)
922fa9e4066Sahrens {
923fa9e4066Sahrens 	nvlist_t *root, **child;
924fa9e4066Sahrens 	int c;
925fa9e4066Sahrens 
926fa9e4066Sahrens 	ASSERT(t > 0);
927fa9e4066Sahrens 
928fa9e4066Sahrens 	child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
929fa9e4066Sahrens 
93031157203SJeff Bonwick 	for (c = 0; c < t; c++) {
93125345e46SGeorge Wilson 		child[c] = make_vdev_mirror(path, aux, pool, size, ashift,
93225345e46SGeorge Wilson 		    r, m);
93331157203SJeff Bonwick 		VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
93431157203SJeff Bonwick 		    log) == 0);
93531157203SJeff Bonwick 	}
936fa9e4066Sahrens 
937fa9e4066Sahrens 	VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0);
938fa9e4066Sahrens 	VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0);
939e14bb325SJeff Bonwick 	VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
940fa9e4066Sahrens 	    child, t) == 0);
941fa9e4066Sahrens 
942fa9e4066Sahrens 	for (c = 0; c < t; c++)
943fa9e4066Sahrens 		nvlist_free(child[c]);
944fa9e4066Sahrens 
945fa9e4066Sahrens 	umem_free(child, t * sizeof (nvlist_t *));
946fa9e4066Sahrens 
947fa9e4066Sahrens 	return (root);
948fa9e4066Sahrens }
949fa9e4066Sahrens 
95025345e46SGeorge Wilson /*
95125345e46SGeorge Wilson  * Find a random spa version. Returns back a random spa version in the
95225345e46SGeorge Wilson  * range [initial_version, SPA_VERSION_FEATURES].
95325345e46SGeorge Wilson  */
95425345e46SGeorge Wilson static uint64_t
95525345e46SGeorge Wilson ztest_random_spa_version(uint64_t initial_version)
95625345e46SGeorge Wilson {
95725345e46SGeorge Wilson 	uint64_t version = initial_version;
95825345e46SGeorge Wilson 
95925345e46SGeorge Wilson 	if (version <= SPA_VERSION_BEFORE_FEATURES) {
96025345e46SGeorge Wilson 		version = version +
96125345e46SGeorge Wilson 		    ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1);
96225345e46SGeorge Wilson 	}
96325345e46SGeorge Wilson 
96425345e46SGeorge Wilson 	if (version > SPA_VERSION_BEFORE_FEATURES)
96525345e46SGeorge Wilson 		version = SPA_VERSION_FEATURES;
96625345e46SGeorge Wilson 
96725345e46SGeorge Wilson 	ASSERT(SPA_VERSION_IS_SUPPORTED(version));
96825345e46SGeorge Wilson 	return (version);
96925345e46SGeorge Wilson }
97025345e46SGeorge Wilson 
971b24ab676SJeff Bonwick static int
972b24ab676SJeff Bonwick ztest_random_blocksize(void)
973fa9e4066Sahrens {
974b5152584SMatthew Ahrens 	uint64_t block_shift;
975b5152584SMatthew Ahrens 	/*
976b5152584SMatthew Ahrens 	 * Choose a block size >= the ashift.
977b5152584SMatthew Ahrens 	 * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks.
978b5152584SMatthew Ahrens 	 */
979b5152584SMatthew Ahrens 	int maxbs = SPA_OLD_MAXBLOCKSHIFT;
980b5152584SMatthew Ahrens 	if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE)
981b5152584SMatthew Ahrens 		maxbs = 20;
98281cd5c55SMatthew Ahrens 	block_shift = ztest_random(maxbs - ztest_spa->spa_max_ashift + 1);
9832a104a52SAlex Reece 	return (1 << (SPA_MINBLOCKSHIFT + block_shift));
984b24ab676SJeff Bonwick }
985fa9e4066Sahrens 
986b24ab676SJeff Bonwick static int
987b24ab676SJeff Bonwick ztest_random_ibshift(void)
988b24ab676SJeff Bonwick {
989b24ab676SJeff Bonwick 	return (DN_MIN_INDBLKSHIFT +
990b24ab676SJeff Bonwick 	    ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
991fa9e4066Sahrens }
992fa9e4066Sahrens 
993b24ab676SJeff Bonwick static uint64_t
994b24ab676SJeff Bonwick ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
995fa9e4066Sahrens {
996b24ab676SJeff Bonwick 	uint64_t top;
997b24ab676SJeff Bonwick 	vdev_t *rvd = spa->spa_root_vdev;
998b24ab676SJeff Bonwick 	vdev_t *tvd;
999fa9e4066Sahrens 
1000b24ab676SJeff Bonwick 	ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
1001fa9e4066Sahrens 
1002b24ab676SJeff Bonwick 	do {
1003b24ab676SJeff Bonwick 		top = ztest_random(rvd->vdev_children);
1004b24ab676SJeff Bonwick 		tvd = rvd->vdev_child[top];
1005b24ab676SJeff Bonwick 	} while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) ||
1006b24ab676SJeff Bonwick 	    tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
1007fa9e4066Sahrens 
1008b24ab676SJeff Bonwick 	return (top);
1009fa9e4066Sahrens }
1010fa9e4066Sahrens 
1011b24ab676SJeff Bonwick static uint64_t
1012b24ab676SJeff Bonwick ztest_random_dsl_prop(zfs_prop_t prop)
1013fa9e4066Sahrens {
1014b24ab676SJeff Bonwick 	uint64_t value;
1015b24ab676SJeff Bonwick 
1016b24ab676SJeff Bonwick 	do {
1017b24ab676SJeff Bonwick 		value = zfs_prop_random_value(prop, ztest_random(-1ULL));
1018b24ab676SJeff Bonwick 	} while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
1019b24ab676SJeff Bonwick 
1020b24ab676SJeff Bonwick 	return (value);
1021fa9e4066Sahrens }
1022fa9e4066Sahrens 
1023fa9e4066Sahrens static int
1024b24ab676SJeff Bonwick ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
1025b24ab676SJeff Bonwick     boolean_t inherit)
1026fa9e4066Sahrens {
1027b24ab676SJeff Bonwick 	const char *propname = zfs_prop_to_name(prop);
1028b24ab676SJeff Bonwick 	const char *valname;
1029b24ab676SJeff Bonwick 	char setpoint[MAXPATHLEN];
1030b24ab676SJeff Bonwick 	uint64_t curval;
1031fa9e4066Sahrens 	int error;
1032fa9e4066Sahrens 
10333b2aab18SMatthew Ahrens 	error = dsl_prop_set_int(osname, propname,
10343b2aab18SMatthew Ahrens 	    (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value);
1035fa9e4066Sahrens 
1036b24ab676SJeff Bonwick 	if (error == ENOSPC) {
1037b24ab676SJeff Bonwick 		ztest_record_enospc(FTAG);
1038fa9e4066Sahrens 		return (error);
1039fa9e4066Sahrens 	}
1040fb09f5aaSMadhav Suresh 	ASSERT0(error);
1041fa9e4066Sahrens 
10423b2aab18SMatthew Ahrens 	VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
1043b24ab676SJeff Bonwick 
1044420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 6) {
1045b24ab676SJeff Bonwick 		VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0);
1046b24ab676SJeff Bonwick 		(void) printf("%s %s = %s at '%s'\n",
1047b24ab676SJeff Bonwick 		    osname, propname, valname, setpoint);
1048fa9e4066Sahrens 	}
1049fa9e4066Sahrens 
1050fa9e4066Sahrens 	return (error);
1051fa9e4066Sahrens }
1052fa9e4066Sahrens 
1053fa9e4066Sahrens static int
1054420dfc95SChris Siden ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value)
1055fa9e4066Sahrens {
1056420dfc95SChris Siden 	spa_t *spa = ztest_spa;
1057b24ab676SJeff Bonwick 	nvlist_t *props = NULL;
1058fa9e4066Sahrens 	int error;
1059fa9e4066Sahrens 
1060b24ab676SJeff Bonwick 	VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
1061b24ab676SJeff Bonwick 	VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0);
1062fa9e4066Sahrens 
1063b24ab676SJeff Bonwick 	error = spa_prop_set(spa, props);
1064b24ab676SJeff Bonwick 
1065b24ab676SJeff Bonwick 	nvlist_free(props);
1066b24ab676SJeff Bonwick 
1067b24ab676SJeff Bonwick 	if (error == ENOSPC) {
1068b24ab676SJeff Bonwick 		ztest_record_enospc(FTAG);
1069fa9e4066Sahrens 		return (error);
1070fa9e4066Sahrens 	}
1071fb09f5aaSMadhav Suresh 	ASSERT0(error);
1072fa9e4066Sahrens 
1073fa9e4066Sahrens 	return (error);
1074fa9e4066Sahrens }
1075fa9e4066Sahrens 
1076b24ab676SJeff Bonwick static void
1077b24ab676SJeff Bonwick ztest_rll_init(rll_t *rll)
1078b24ab676SJeff Bonwick {
1079b24ab676SJeff Bonwick 	rll->rll_writer = NULL;
1080b24ab676SJeff Bonwick 	rll->rll_readers = 0;
1081b24ab676SJeff Bonwick 	VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0);
1082b24ab676SJeff Bonwick 	VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0);
1083b24ab676SJeff Bonwick }
1084fa9e4066Sahrens 
1085b24ab676SJeff Bonwick static void
1086b24ab676SJeff Bonwick ztest_rll_destroy(rll_t *rll)
1087fa9e4066Sahrens {
1088b24ab676SJeff Bonwick 	ASSERT(rll->rll_writer == NULL);
1089b24ab676SJeff Bonwick 	ASSERT(rll->rll_readers == 0);
1090b24ab676SJeff Bonwick 	VERIFY(_mutex_destroy(&rll->rll_lock) == 0);
1091b24ab676SJeff Bonwick 	VERIFY(cond_destroy(&rll->rll_cv) == 0);
1092b24ab676SJeff Bonwick }
1093fa9e4066Sahrens 
1094b24ab676SJeff Bonwick static void
1095b24ab676SJeff Bonwick ztest_rll_lock(rll_t *rll, rl_type_t type)
1096b24ab676SJeff Bonwick {
1097b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&rll->rll_lock) == 0);
1098fa9e4066Sahrens 
1099b24ab676SJeff Bonwick 	if (type == RL_READER) {
1100b24ab676SJeff Bonwick 		while (rll->rll_writer != NULL)
1101b24ab676SJeff Bonwick 			(void) cond_wait(&rll->rll_cv, &rll->rll_lock);
1102b24ab676SJeff Bonwick 		rll->rll_readers++;
1103b24ab676SJeff Bonwick 	} else {
1104b24ab676SJeff Bonwick 		while (rll->rll_writer != NULL || rll->rll_readers)
1105b24ab676SJeff Bonwick 			(void) cond_wait(&rll->rll_cv, &rll->rll_lock);
1106b24ab676SJeff Bonwick 		rll->rll_writer = curthread;
1107b24ab676SJeff Bonwick 	}
1108fa9e4066Sahrens 
1109b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&rll->rll_lock) == 0);
1110b24ab676SJeff Bonwick }
1111fa9e4066Sahrens 
1112b24ab676SJeff Bonwick static void
1113b24ab676SJeff Bonwick ztest_rll_unlock(rll_t *rll)
1114b24ab676SJeff Bonwick {
1115b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&rll->rll_lock) == 0);
1116fa9e4066Sahrens 
1117b24ab676SJeff Bonwick 	if (rll->rll_writer) {
1118b24ab676SJeff Bonwick 		ASSERT(rll->rll_readers == 0);
1119b24ab676SJeff Bonwick 		rll->rll_writer = NULL;
1120b24ab676SJeff Bonwick 	} else {
1121b24ab676SJeff Bonwick 		ASSERT(rll->rll_readers != 0);
1122b24ab676SJeff Bonwick 		ASSERT(rll->rll_writer == NULL);
1123b24ab676SJeff Bonwick 		rll->rll_readers--;
1124b24ab676SJeff Bonwick 	}
1125fa9e4066Sahrens 
1126b24ab676SJeff Bonwick 	if (rll->rll_writer == NULL && rll->rll_readers == 0)
1127b24ab676SJeff Bonwick 		VERIFY(cond_broadcast(&rll->rll_cv) == 0);
1128b24ab676SJeff Bonwick 
1129b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&rll->rll_lock) == 0);
1130fa9e4066Sahrens }
1131fa9e4066Sahrens 
1132b24ab676SJeff Bonwick static void
1133b24ab676SJeff Bonwick ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
113431157203SJeff Bonwick {
1135b24ab676SJeff Bonwick 	rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
113631157203SJeff Bonwick 
1137b24ab676SJeff Bonwick 	ztest_rll_lock(rll, type);
1138b24ab676SJeff Bonwick }
113931157203SJeff Bonwick 
1140b24ab676SJeff Bonwick static void
1141b24ab676SJeff Bonwick ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
1142b24ab676SJeff Bonwick {
1143b24ab676SJeff Bonwick 	rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
114431157203SJeff Bonwick 
1145b24ab676SJeff Bonwick 	ztest_rll_unlock(rll);
114631157203SJeff Bonwick }
114731157203SJeff Bonwick 
1148b24ab676SJeff Bonwick static rl_t *
1149b24ab676SJeff Bonwick ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
1150b24ab676SJeff Bonwick     uint64_t size, rl_type_t type)
115188ecc943SGeorge Wilson {
1152b24ab676SJeff Bonwick 	uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
1153b24ab676SJeff Bonwick 	rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
1154b24ab676SJeff Bonwick 	rl_t *rl;
115588ecc943SGeorge Wilson 
1156b24ab676SJeff Bonwick 	rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
1157b24ab676SJeff Bonwick 	rl->rl_object = object;
1158b24ab676SJeff Bonwick 	rl->rl_offset = offset;
1159b24ab676SJeff Bonwick 	rl->rl_size = size;
1160b24ab676SJeff Bonwick 	rl->rl_lock = rll;
116188ecc943SGeorge Wilson 
1162b24ab676SJeff Bonwick 	ztest_rll_lock(rll, type);
116388ecc943SGeorge Wilson 
1164b24ab676SJeff Bonwick 	return (rl);
116588ecc943SGeorge Wilson }
116688ecc943SGeorge Wilson 
1167b24ab676SJeff Bonwick static void
1168b24ab676SJeff Bonwick ztest_range_unlock(rl_t *rl)
1169fa9e4066Sahrens {
1170b24ab676SJeff Bonwick 	rll_t *rll = rl->rl_lock;
1171fa9e4066Sahrens 
1172b24ab676SJeff Bonwick 	ztest_rll_unlock(rll);
1173fa9e4066Sahrens 
1174b24ab676SJeff Bonwick 	umem_free(rl, sizeof (*rl));
1175b24ab676SJeff Bonwick }
1176fa9e4066Sahrens 
1177b24ab676SJeff Bonwick static void
1178420dfc95SChris Siden ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os)
1179b24ab676SJeff Bonwick {
1180b24ab676SJeff Bonwick 	zd->zd_os = os;
1181b24ab676SJeff Bonwick 	zd->zd_zilog = dmu_objset_zil(os);
1182420dfc95SChris Siden 	zd->zd_shared = szd;
1183b24ab676SJeff Bonwick 	dmu_objset_name(os, zd->zd_name);
1184fa9e4066Sahrens 
1185420dfc95SChris Siden 	if (zd->zd_shared != NULL)
1186420dfc95SChris Siden 		zd->zd_shared->zd_seq = 0;
1187420dfc95SChris Siden 
1188c9ba2a43SEric Schrock 	VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0);
1189b24ab676SJeff Bonwick 	VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0);
1190b24ab676SJeff Bonwick 
1191b24ab676SJeff Bonwick 	for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1192b24ab676SJeff Bonwick 		ztest_rll_init(&zd->zd_object_lock[l]);
1193b24ab676SJeff Bonwick 
1194b24ab676SJeff Bonwick 	for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1195b24ab676SJeff Bonwick 		ztest_rll_init(&zd->zd_range_lock[l]);
1196b24ab676SJeff Bonwick }
1197b24ab676SJeff Bonwick 
1198b24ab676SJeff Bonwick static void
1199b24ab676SJeff Bonwick ztest_zd_fini(ztest_ds_t *zd)
1200b24ab676SJeff Bonwick {
1201b24ab676SJeff Bonwick 	VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0);
1202b24ab676SJeff Bonwick 
1203b24ab676SJeff Bonwick 	for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1204b24ab676SJeff Bonwick 		ztest_rll_destroy(&zd->zd_object_lock[l]);
1205b24ab676SJeff Bonwick 
1206b24ab676SJeff Bonwick 	for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1207b24ab676SJeff Bonwick 		ztest_rll_destroy(&zd->zd_range_lock[l]);
1208b24ab676SJeff Bonwick }
1209b24ab676SJeff Bonwick 
1210b24ab676SJeff Bonwick #define	TXG_MIGHTWAIT	(ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
1211b24ab676SJeff Bonwick 
1212b24ab676SJeff Bonwick static uint64_t
1213b24ab676SJeff Bonwick ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
1214b24ab676SJeff Bonwick {
1215b24ab676SJeff Bonwick 	uint64_t txg;
1216b24ab676SJeff Bonwick 	int error;
1217b24ab676SJeff Bonwick 
1218b24ab676SJeff Bonwick 	/*
1219b24ab676SJeff Bonwick 	 * Attempt to assign tx to some transaction group.
1220b24ab676SJeff Bonwick 	 */
1221b24ab676SJeff Bonwick 	error = dmu_tx_assign(tx, txg_how);
1222b24ab676SJeff Bonwick 	if (error) {
1223b24ab676SJeff Bonwick 		if (error == ERESTART) {
1224b24ab676SJeff Bonwick 			ASSERT(txg_how == TXG_NOWAIT);
1225b24ab676SJeff Bonwick 			dmu_tx_wait(tx);
1226b24ab676SJeff Bonwick 		} else {
1227b24ab676SJeff Bonwick 			ASSERT3U(error, ==, ENOSPC);
1228b24ab676SJeff Bonwick 			ztest_record_enospc(tag);
1229b24ab676SJeff Bonwick 		}
1230b24ab676SJeff Bonwick 		dmu_tx_abort(tx);
1231b24ab676SJeff Bonwick 		return (0);
1232b24ab676SJeff Bonwick 	}
1233b24ab676SJeff Bonwick 	txg = dmu_tx_get_txg(tx);
1234b24ab676SJeff Bonwick 	ASSERT(txg != 0);
1235b24ab676SJeff Bonwick 	return (txg);
1236b24ab676SJeff Bonwick }
1237b24ab676SJeff Bonwick 
1238b24ab676SJeff Bonwick static void
1239b24ab676SJeff Bonwick ztest_pattern_set(void *buf, uint64_t size, uint64_t value)
1240b24ab676SJeff Bonwick {
1241b24ab676SJeff Bonwick 	uint64_t *ip = buf;
1242b24ab676SJeff Bonwick 	uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1243b24ab676SJeff Bonwick 
1244b24ab676SJeff Bonwick 	while (ip < ip_end)
1245b24ab676SJeff Bonwick 		*ip++ = value;
1246b24ab676SJeff Bonwick }
1247b24ab676SJeff Bonwick 
1248b24ab676SJeff Bonwick static boolean_t
1249b24ab676SJeff Bonwick ztest_pattern_match(void *buf, uint64_t size, uint64_t value)
1250b24ab676SJeff Bonwick {
1251b24ab676SJeff Bonwick 	uint64_t *ip = buf;
1252b24ab676SJeff Bonwick 	uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1253b24ab676SJeff Bonwick 	uint64_t diff = 0;
1254b24ab676SJeff Bonwick 
1255b24ab676SJeff Bonwick 	while (ip < ip_end)
1256b24ab676SJeff Bonwick 		diff |= (value - *ip++);
1257b24ab676SJeff Bonwick 
1258b24ab676SJeff Bonwick 	return (diff == 0);
1259b24ab676SJeff Bonwick }
1260b24ab676SJeff Bonwick 
1261b24ab676SJeff Bonwick static void
1262b24ab676SJeff Bonwick ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1263b24ab676SJeff Bonwick     uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1264b24ab676SJeff Bonwick {
1265b24ab676SJeff Bonwick 	bt->bt_magic = BT_MAGIC;
1266b24ab676SJeff Bonwick 	bt->bt_objset = dmu_objset_id(os);
1267b24ab676SJeff Bonwick 	bt->bt_object = object;
1268b24ab676SJeff Bonwick 	bt->bt_offset = offset;
1269b24ab676SJeff Bonwick 	bt->bt_gen = gen;
1270b24ab676SJeff Bonwick 	bt->bt_txg = txg;
1271b24ab676SJeff Bonwick 	bt->bt_crtxg = crtxg;
1272b24ab676SJeff Bonwick }
1273b24ab676SJeff Bonwick 
1274b24ab676SJeff Bonwick static void
1275b24ab676SJeff Bonwick ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1276b24ab676SJeff Bonwick     uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1277b24ab676SJeff Bonwick {
12785d7b4d43SMatthew Ahrens 	ASSERT3U(bt->bt_magic, ==, BT_MAGIC);
12795d7b4d43SMatthew Ahrens 	ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os));
12805d7b4d43SMatthew Ahrens 	ASSERT3U(bt->bt_object, ==, object);
12815d7b4d43SMatthew Ahrens 	ASSERT3U(bt->bt_offset, ==, offset);
12825d7b4d43SMatthew Ahrens 	ASSERT3U(bt->bt_gen, <=, gen);
12835d7b4d43SMatthew Ahrens 	ASSERT3U(bt->bt_txg, <=, txg);
12845d7b4d43SMatthew Ahrens 	ASSERT3U(bt->bt_crtxg, ==, crtxg);
1285b24ab676SJeff Bonwick }
1286b24ab676SJeff Bonwick 
1287b24ab676SJeff Bonwick static ztest_block_tag_t *
1288b24ab676SJeff Bonwick ztest_bt_bonus(dmu_buf_t *db)
1289b24ab676SJeff Bonwick {
1290b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1291b24ab676SJeff Bonwick 	ztest_block_tag_t *bt;
1292b24ab676SJeff Bonwick 
1293b24ab676SJeff Bonwick 	dmu_object_info_from_db(db, &doi);
1294b24ab676SJeff Bonwick 	ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
1295b24ab676SJeff Bonwick 	ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
1296b24ab676SJeff Bonwick 	bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
1297b24ab676SJeff Bonwick 
1298b24ab676SJeff Bonwick 	return (bt);
1299b24ab676SJeff Bonwick }
1300b24ab676SJeff Bonwick 
1301b24ab676SJeff Bonwick /*
1302b24ab676SJeff Bonwick  * ZIL logging ops
1303b24ab676SJeff Bonwick  */
1304b24ab676SJeff Bonwick 
1305b24ab676SJeff Bonwick #define	lrz_type	lr_mode
1306b24ab676SJeff Bonwick #define	lrz_blocksize	lr_uid
1307b24ab676SJeff Bonwick #define	lrz_ibshift	lr_gid
1308b24ab676SJeff Bonwick #define	lrz_bonustype	lr_rdev
1309b24ab676SJeff Bonwick #define	lrz_bonuslen	lr_crtime[1]
1310b24ab676SJeff Bonwick 
13115002558fSNeil Perrin static void
1312b24ab676SJeff Bonwick ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
1313b24ab676SJeff Bonwick {
1314b24ab676SJeff Bonwick 	char *name = (void *)(lr + 1);		/* name follows lr */
1315b24ab676SJeff Bonwick 	size_t namesize = strlen(name) + 1;
1316b24ab676SJeff Bonwick 	itx_t *itx;
1317b24ab676SJeff Bonwick 
1318b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
13195002558fSNeil Perrin 		return;
1320b24ab676SJeff Bonwick 
1321b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
1322b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1323b24ab676SJeff Bonwick 	    sizeof (*lr) + namesize - sizeof (lr_t));
1324b24ab676SJeff Bonwick 
13255002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1326b24ab676SJeff Bonwick }
1327b24ab676SJeff Bonwick 
13285002558fSNeil Perrin static void
13295002558fSNeil Perrin ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
1330b24ab676SJeff Bonwick {
1331b24ab676SJeff Bonwick 	char *name = (void *)(lr + 1);		/* name follows lr */
1332b24ab676SJeff Bonwick 	size_t namesize = strlen(name) + 1;
1333b24ab676SJeff Bonwick 	itx_t *itx;
1334b24ab676SJeff Bonwick 
1335b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
13365002558fSNeil Perrin 		return;
1337b24ab676SJeff Bonwick 
1338b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
1339b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1340b24ab676SJeff Bonwick 	    sizeof (*lr) + namesize - sizeof (lr_t));
1341b24ab676SJeff Bonwick 
134251bd2f97SNeil Perrin 	itx->itx_oid = object;
13435002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1344b24ab676SJeff Bonwick }
1345b24ab676SJeff Bonwick 
13465002558fSNeil Perrin static void
1347b24ab676SJeff Bonwick ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
1348b24ab676SJeff Bonwick {
1349b24ab676SJeff Bonwick 	itx_t *itx;
1350b24ab676SJeff Bonwick 	itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
1351b24ab676SJeff Bonwick 
1352b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
13535002558fSNeil Perrin 		return;
1354b24ab676SJeff Bonwick 
1355b24ab676SJeff Bonwick 	if (lr->lr_length > ZIL_MAX_LOG_DATA)
1356b24ab676SJeff Bonwick 		write_state = WR_INDIRECT;
1357b24ab676SJeff Bonwick 
1358b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_WRITE,
1359b24ab676SJeff Bonwick 	    sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
1360b24ab676SJeff Bonwick 
1361b24ab676SJeff Bonwick 	if (write_state == WR_COPIED &&
1362b24ab676SJeff Bonwick 	    dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
1363b24ab676SJeff Bonwick 	    ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
1364b24ab676SJeff Bonwick 		zil_itx_destroy(itx);
1365b24ab676SJeff Bonwick 		itx = zil_itx_create(TX_WRITE, sizeof (*lr));
1366b24ab676SJeff Bonwick 		write_state = WR_NEED_COPY;
1367b24ab676SJeff Bonwick 	}
1368b24ab676SJeff Bonwick 	itx->itx_private = zd;
1369b24ab676SJeff Bonwick 	itx->itx_wr_state = write_state;
1370b24ab676SJeff Bonwick 	itx->itx_sync = (ztest_random(8) == 0);
1371b24ab676SJeff Bonwick 	itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0);
1372b24ab676SJeff Bonwick 
1373b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1374b24ab676SJeff Bonwick 	    sizeof (*lr) - sizeof (lr_t));
1375b24ab676SJeff Bonwick 
13765002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1377b24ab676SJeff Bonwick }
1378b24ab676SJeff Bonwick 
13795002558fSNeil Perrin static void
1380b24ab676SJeff Bonwick ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
1381b24ab676SJeff Bonwick {
1382b24ab676SJeff Bonwick 	itx_t *itx;
1383b24ab676SJeff Bonwick 
1384b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
13855002558fSNeil Perrin 		return;
1386b24ab676SJeff Bonwick 
1387b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
1388b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1389b24ab676SJeff Bonwick 	    sizeof (*lr) - sizeof (lr_t));
1390b24ab676SJeff Bonwick 
13915002558fSNeil Perrin 	itx->itx_sync = B_FALSE;
13925002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1393b24ab676SJeff Bonwick }
1394b24ab676SJeff Bonwick 
13955002558fSNeil Perrin static void
1396b24ab676SJeff Bonwick ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
1397b24ab676SJeff Bonwick {
1398b24ab676SJeff Bonwick 	itx_t *itx;
1399b24ab676SJeff Bonwick 
1400b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
14015002558fSNeil Perrin 		return;
1402b24ab676SJeff Bonwick 
1403b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
1404b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1405b24ab676SJeff Bonwick 	    sizeof (*lr) - sizeof (lr_t));
1406b24ab676SJeff Bonwick 
14075002558fSNeil Perrin 	itx->itx_sync = B_FALSE;
14085002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1409b24ab676SJeff Bonwick }
1410b24ab676SJeff Bonwick 
1411b24ab676SJeff Bonwick /*
1412b24ab676SJeff Bonwick  * ZIL replay ops
1413b24ab676SJeff Bonwick  */
1414b24ab676SJeff Bonwick static int
1415b24ab676SJeff Bonwick ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap)
1416b24ab676SJeff Bonwick {
1417b24ab676SJeff Bonwick 	char *name = (void *)(lr + 1);		/* name follows lr */
1418b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1419b24ab676SJeff Bonwick 	ztest_block_tag_t *bbt;
1420b24ab676SJeff Bonwick 	dmu_buf_t *db;
1421b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1422b24ab676SJeff Bonwick 	uint64_t txg;
1423b24ab676SJeff Bonwick 	int error = 0;
1424b24ab676SJeff Bonwick 
1425b24ab676SJeff Bonwick 	if (byteswap)
1426b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1427b24ab676SJeff Bonwick 
1428b24ab676SJeff Bonwick 	ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1429b24ab676SJeff Bonwick 	ASSERT(name[0] != '\0');
1430b24ab676SJeff Bonwick 
1431b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1432b24ab676SJeff Bonwick 
1433b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
1434b24ab676SJeff Bonwick 
1435b24ab676SJeff Bonwick 	if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1436b24ab676SJeff Bonwick 		dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
1437b24ab676SJeff Bonwick 	} else {
1438b24ab676SJeff Bonwick 		dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
1439b24ab676SJeff Bonwick 	}
1440b24ab676SJeff Bonwick 
1441b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1442b24ab676SJeff Bonwick 	if (txg == 0)
1443b24ab676SJeff Bonwick 		return (ENOSPC);
1444b24ab676SJeff Bonwick 
1445b24ab676SJeff Bonwick 	ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid);
1446b24ab676SJeff Bonwick 
1447b24ab676SJeff Bonwick 	if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1448b24ab676SJeff Bonwick 		if (lr->lr_foid == 0) {
1449b24ab676SJeff Bonwick 			lr->lr_foid = zap_create(os,
1450b24ab676SJeff Bonwick 			    lr->lrz_type, lr->lrz_bonustype,
1451b24ab676SJeff Bonwick 			    lr->lrz_bonuslen, tx);
1452b24ab676SJeff Bonwick 		} else {
1453b24ab676SJeff Bonwick 			error = zap_create_claim(os, lr->lr_foid,
1454b24ab676SJeff Bonwick 			    lr->lrz_type, lr->lrz_bonustype,
1455b24ab676SJeff Bonwick 			    lr->lrz_bonuslen, tx);
1456b24ab676SJeff Bonwick 		}
1457b24ab676SJeff Bonwick 	} else {
1458b24ab676SJeff Bonwick 		if (lr->lr_foid == 0) {
1459b24ab676SJeff Bonwick 			lr->lr_foid = dmu_object_alloc(os,
1460b24ab676SJeff Bonwick 			    lr->lrz_type, 0, lr->lrz_bonustype,
1461b24ab676SJeff Bonwick 			    lr->lrz_bonuslen, tx);
1462b24ab676SJeff Bonwick 		} else {
1463b24ab676SJeff Bonwick 			error = dmu_object_claim(os, lr->lr_foid,
1464b24ab676SJeff Bonwick 			    lr->lrz_type, 0, lr->lrz_bonustype,
1465b24ab676SJeff Bonwick 			    lr->lrz_bonuslen, tx);
1466b24ab676SJeff Bonwick 		}
1467b24ab676SJeff Bonwick 	}
1468b24ab676SJeff Bonwick 
1469b24ab676SJeff Bonwick 	if (error) {
1470b24ab676SJeff Bonwick 		ASSERT3U(error, ==, EEXIST);
1471b24ab676SJeff Bonwick 		ASSERT(zd->zd_zilog->zl_replay);
1472b24ab676SJeff Bonwick 		dmu_tx_commit(tx);
1473b24ab676SJeff Bonwick 		return (error);
1474b24ab676SJeff Bonwick 	}
1475b24ab676SJeff Bonwick 
1476b24ab676SJeff Bonwick 	ASSERT(lr->lr_foid != 0);
1477b24ab676SJeff Bonwick 
1478b24ab676SJeff Bonwick 	if (lr->lrz_type != DMU_OT_ZAP_OTHER)
1479b420f3adSRichard Lowe 		VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid,
1480b24ab676SJeff Bonwick 		    lr->lrz_blocksize, lr->lrz_ibshift, tx));
1481b24ab676SJeff Bonwick 
1482b420f3adSRichard Lowe 	VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1483b24ab676SJeff Bonwick 	bbt = ztest_bt_bonus(db);
1484b24ab676SJeff Bonwick 	dmu_buf_will_dirty(db, tx);
1485b24ab676SJeff Bonwick 	ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg);
1486b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
1487b24ab676SJeff Bonwick 
1488b420f3adSRichard Lowe 	VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
1489b24ab676SJeff Bonwick 	    &lr->lr_foid, tx));
1490b24ab676SJeff Bonwick 
1491b24ab676SJeff Bonwick 	(void) ztest_log_create(zd, tx, lr);
1492b24ab676SJeff Bonwick 
1493b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1494b24ab676SJeff Bonwick 
1495b24ab676SJeff Bonwick 	return (0);
1496b24ab676SJeff Bonwick }
1497b24ab676SJeff Bonwick 
1498b24ab676SJeff Bonwick static int
1499b24ab676SJeff Bonwick ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap)
1500b24ab676SJeff Bonwick {
1501b24ab676SJeff Bonwick 	char *name = (void *)(lr + 1);		/* name follows lr */
1502b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1503b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1504b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1505b24ab676SJeff Bonwick 	uint64_t object, txg;
1506b24ab676SJeff Bonwick 
1507b24ab676SJeff Bonwick 	if (byteswap)
1508b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1509b24ab676SJeff Bonwick 
1510b24ab676SJeff Bonwick 	ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1511b24ab676SJeff Bonwick 	ASSERT(name[0] != '\0');
1512b24ab676SJeff Bonwick 
1513b420f3adSRichard Lowe 	VERIFY3U(0, ==,
1514b24ab676SJeff Bonwick 	    zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
1515b24ab676SJeff Bonwick 	ASSERT(object != 0);
1516b24ab676SJeff Bonwick 
1517b24ab676SJeff Bonwick 	ztest_object_lock(zd, object, RL_WRITER);
1518b24ab676SJeff Bonwick 
1519b420f3adSRichard Lowe 	VERIFY3U(0, ==, dmu_object_info(os, object, &doi));
1520b24ab676SJeff Bonwick 
1521b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1522b24ab676SJeff Bonwick 
1523b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
1524b24ab676SJeff Bonwick 	dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
1525b24ab676SJeff Bonwick 
1526b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1527b24ab676SJeff Bonwick 	if (txg == 0) {
1528b24ab676SJeff Bonwick 		ztest_object_unlock(zd, object);
1529b24ab676SJeff Bonwick 		return (ENOSPC);
1530b24ab676SJeff Bonwick 	}
1531b24ab676SJeff Bonwick 
1532b24ab676SJeff Bonwick 	if (doi.doi_type == DMU_OT_ZAP_OTHER) {
1533b420f3adSRichard Lowe 		VERIFY3U(0, ==, zap_destroy(os, object, tx));
1534b24ab676SJeff Bonwick 	} else {
1535b420f3adSRichard Lowe 		VERIFY3U(0, ==, dmu_object_free(os, object, tx));
1536b24ab676SJeff Bonwick 	}
1537b24ab676SJeff Bonwick 
1538b420f3adSRichard Lowe 	VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx));
1539b24ab676SJeff Bonwick 
15405002558fSNeil Perrin 	(void) ztest_log_remove(zd, tx, lr, object);
1541b24ab676SJeff Bonwick 
1542b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1543b24ab676SJeff Bonwick 
1544b24ab676SJeff Bonwick 	ztest_object_unlock(zd, object);
1545b24ab676SJeff Bonwick 
1546b24ab676SJeff Bonwick 	return (0);
1547b24ab676SJeff Bonwick }
1548b24ab676SJeff Bonwick 
1549b24ab676SJeff Bonwick static int
1550b24ab676SJeff Bonwick ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap)
1551b24ab676SJeff Bonwick {
1552b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1553b24ab676SJeff Bonwick 	void *data = lr + 1;			/* data follows lr */
1554b24ab676SJeff Bonwick 	uint64_t offset, length;
1555b24ab676SJeff Bonwick 	ztest_block_tag_t *bt = data;
1556b24ab676SJeff Bonwick 	ztest_block_tag_t *bbt;
1557b24ab676SJeff Bonwick 	uint64_t gen, txg, lrtxg, crtxg;
1558b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1559b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1560b24ab676SJeff Bonwick 	dmu_buf_t *db;
1561b24ab676SJeff Bonwick 	arc_buf_t *abuf = NULL;
1562b24ab676SJeff Bonwick 	rl_t *rl;
1563b24ab676SJeff Bonwick 
1564b24ab676SJeff Bonwick 	if (byteswap)
1565b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1566b24ab676SJeff Bonwick 
1567b24ab676SJeff Bonwick 	offset = lr->lr_offset;
1568b24ab676SJeff Bonwick 	length = lr->lr_length;
1569b24ab676SJeff Bonwick 
1570b24ab676SJeff Bonwick 	/* If it's a dmu_sync() block, write the whole block */
1571b24ab676SJeff Bonwick 	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
1572b24ab676SJeff Bonwick 		uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
1573b24ab676SJeff Bonwick 		if (length < blocksize) {
1574b24ab676SJeff Bonwick 			offset -= offset % blocksize;
1575b24ab676SJeff Bonwick 			length = blocksize;
1576b24ab676SJeff Bonwick 		}
1577b24ab676SJeff Bonwick 	}
1578b24ab676SJeff Bonwick 
1579b24ab676SJeff Bonwick 	if (bt->bt_magic == BSWAP_64(BT_MAGIC))
1580b24ab676SJeff Bonwick 		byteswap_uint64_array(bt, sizeof (*bt));
1581b24ab676SJeff Bonwick 
1582b24ab676SJeff Bonwick 	if (bt->bt_magic != BT_MAGIC)
1583b24ab676SJeff Bonwick 		bt = NULL;
1584b24ab676SJeff Bonwick 
1585b24ab676SJeff Bonwick 	ztest_object_lock(zd, lr->lr_foid, RL_READER);
1586b24ab676SJeff Bonwick 	rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
1587b24ab676SJeff Bonwick 
1588b420f3adSRichard Lowe 	VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1589b24ab676SJeff Bonwick 
1590b24ab676SJeff Bonwick 	dmu_object_info_from_db(db, &doi);
1591b24ab676SJeff Bonwick 
1592b24ab676SJeff Bonwick 	bbt = ztest_bt_bonus(db);
1593b24ab676SJeff Bonwick 	ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1594b24ab676SJeff Bonwick 	gen = bbt->bt_gen;
1595b24ab676SJeff Bonwick 	crtxg = bbt->bt_crtxg;
1596b24ab676SJeff Bonwick 	lrtxg = lr->lr_common.lrc_txg;
1597b24ab676SJeff Bonwick 
1598b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1599b24ab676SJeff Bonwick 
1600b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
1601b24ab676SJeff Bonwick 
1602b24ab676SJeff Bonwick 	if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
1603b24ab676SJeff Bonwick 	    P2PHASE(offset, length) == 0)
1604b24ab676SJeff Bonwick 		abuf = dmu_request_arcbuf(db, length);
1605b24ab676SJeff Bonwick 
1606b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1607b24ab676SJeff Bonwick 	if (txg == 0) {
1608b24ab676SJeff Bonwick 		if (abuf != NULL)
1609b24ab676SJeff Bonwick 			dmu_return_arcbuf(abuf);
1610b24ab676SJeff Bonwick 		dmu_buf_rele(db, FTAG);
1611b24ab676SJeff Bonwick 		ztest_range_unlock(rl);
1612b24ab676SJeff Bonwick 		ztest_object_unlock(zd, lr->lr_foid);
1613b24ab676SJeff Bonwick 		return (ENOSPC);
1614b24ab676SJeff Bonwick 	}
1615b24ab676SJeff Bonwick 
1616b24ab676SJeff Bonwick 	if (bt != NULL) {
1617b24ab676SJeff Bonwick 		/*
1618b24ab676SJeff Bonwick 		 * Usually, verify the old data before writing new data --
1619b24ab676SJeff Bonwick 		 * but not always, because we also want to verify correct
1620b24ab676SJeff Bonwick 		 * behavior when the data was not recently read into cache.
1621b24ab676SJeff Bonwick 		 */
1622b24ab676SJeff Bonwick 		ASSERT(offset % doi.doi_data_block_size == 0);
1623b24ab676SJeff Bonwick 		if (ztest_random(4) != 0) {
1624b24ab676SJeff Bonwick 			int prefetch = ztest_random(2) ?
1625b24ab676SJeff Bonwick 			    DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
1626b24ab676SJeff Bonwick 			ztest_block_tag_t rbt;
1627b24ab676SJeff Bonwick 
1628b24ab676SJeff Bonwick 			VERIFY(dmu_read(os, lr->lr_foid, offset,
1629b24ab676SJeff Bonwick 			    sizeof (rbt), &rbt, prefetch) == 0);
1630b24ab676SJeff Bonwick 			if (rbt.bt_magic == BT_MAGIC) {
1631b24ab676SJeff Bonwick 				ztest_bt_verify(&rbt, os, lr->lr_foid,
1632b24ab676SJeff Bonwick 				    offset, gen, txg, crtxg);
1633b24ab676SJeff Bonwick 			}
1634b24ab676SJeff Bonwick 		}
1635b24ab676SJeff Bonwick 
1636b24ab676SJeff Bonwick 		/*
1637b24ab676SJeff Bonwick 		 * Writes can appear to be newer than the bonus buffer because
1638b24ab676SJeff Bonwick 		 * the ztest_get_data() callback does a dmu_read() of the
1639b24ab676SJeff Bonwick 		 * open-context data, which may be different than the data
1640b24ab676SJeff Bonwick 		 * as it was when the write was generated.
1641b24ab676SJeff Bonwick 		 */
1642b24ab676SJeff Bonwick 		if (zd->zd_zilog->zl_replay) {
1643b24ab676SJeff Bonwick 			ztest_bt_verify(bt, os, lr->lr_foid, offset,
1644b24ab676SJeff Bonwick 			    MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
1645b24ab676SJeff Bonwick 			    bt->bt_crtxg);
1646b24ab676SJeff Bonwick 		}
1647b24ab676SJeff Bonwick 
1648b24ab676SJeff Bonwick 		/*
1649b24ab676SJeff Bonwick 		 * Set the bt's gen/txg to the bonus buffer's gen/txg
1650b24ab676SJeff Bonwick 		 * so that all of the usual ASSERTs will work.
1651b24ab676SJeff Bonwick 		 */
1652b24ab676SJeff Bonwick 		ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg);
1653b24ab676SJeff Bonwick 	}
1654b24ab676SJeff Bonwick 
1655b24ab676SJeff Bonwick 	if (abuf == NULL) {
1656b24ab676SJeff Bonwick 		dmu_write(os, lr->lr_foid, offset, length, data, tx);
1657b24ab676SJeff Bonwick 	} else {
1658b24ab676SJeff Bonwick 		bcopy(data, abuf->b_data, length);
1659b24ab676SJeff Bonwick 		dmu_assign_arcbuf(db, offset, abuf, tx);
1660b24ab676SJeff Bonwick 	}
1661b24ab676SJeff Bonwick 
1662b24ab676SJeff Bonwick 	(void) ztest_log_write(zd, tx, lr);
1663b24ab676SJeff Bonwick 
1664b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
1665b24ab676SJeff Bonwick 
1666b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1667b24ab676SJeff Bonwick 
1668b24ab676SJeff Bonwick 	ztest_range_unlock(rl);
1669b24ab676SJeff Bonwick 	ztest_object_unlock(zd, lr->lr_foid);
1670b24ab676SJeff Bonwick 
1671b24ab676SJeff Bonwick 	return (0);
1672b24ab676SJeff Bonwick }
1673b24ab676SJeff Bonwick 
1674b24ab676SJeff Bonwick static int
1675b24ab676SJeff Bonwick ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap)
1676b24ab676SJeff Bonwick {
1677b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1678b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1679b24ab676SJeff Bonwick 	uint64_t txg;
1680b24ab676SJeff Bonwick 	rl_t *rl;
1681b24ab676SJeff Bonwick 
1682b24ab676SJeff Bonwick 	if (byteswap)
1683b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1684b24ab676SJeff Bonwick 
1685b24ab676SJeff Bonwick 	ztest_object_lock(zd, lr->lr_foid, RL_READER);
1686b24ab676SJeff Bonwick 	rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
1687b24ab676SJeff Bonwick 	    RL_WRITER);
1688b24ab676SJeff Bonwick 
1689b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1690b24ab676SJeff Bonwick 
1691b24ab676SJeff Bonwick 	dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
1692b24ab676SJeff Bonwick 
1693b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1694b24ab676SJeff Bonwick 	if (txg == 0) {
1695b24ab676SJeff Bonwick 		ztest_range_unlock(rl);
1696b24ab676SJeff Bonwick 		ztest_object_unlock(zd, lr->lr_foid);
1697b24ab676SJeff Bonwick 		return (ENOSPC);
1698b24ab676SJeff Bonwick 	}
1699b24ab676SJeff Bonwick 
1700b24ab676SJeff Bonwick 	VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
1701b24ab676SJeff Bonwick 	    lr->lr_length, tx) == 0);
1702b24ab676SJeff Bonwick 
1703b24ab676SJeff Bonwick 	(void) ztest_log_truncate(zd, tx, lr);
1704b24ab676SJeff Bonwick 
1705b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1706b24ab676SJeff Bonwick 
1707b24ab676SJeff Bonwick 	ztest_range_unlock(rl);
1708b24ab676SJeff Bonwick 	ztest_object_unlock(zd, lr->lr_foid);
1709b24ab676SJeff Bonwick 
1710b24ab676SJeff Bonwick 	return (0);
1711b24ab676SJeff Bonwick }
1712b24ab676SJeff Bonwick 
1713b24ab676SJeff Bonwick static int
1714b24ab676SJeff Bonwick ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap)
1715b24ab676SJeff Bonwick {
1716b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1717b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1718b24ab676SJeff Bonwick 	dmu_buf_t *db;
1719b24ab676SJeff Bonwick 	ztest_block_tag_t *bbt;
1720b24ab676SJeff Bonwick 	uint64_t txg, lrtxg, crtxg;
1721b24ab676SJeff Bonwick 
1722b24ab676SJeff Bonwick 	if (byteswap)
1723b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1724b24ab676SJeff Bonwick 
1725b24ab676SJeff Bonwick 	ztest_object_lock(zd, lr->lr_foid, RL_WRITER);
1726b24ab676SJeff Bonwick 
1727b420f3adSRichard Lowe 	VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1728b24ab676SJeff Bonwick 
1729b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1730b24ab676SJeff Bonwick 	dmu_tx_hold_bonus(tx, lr->lr_foid);
1731b24ab676SJeff Bonwick 
1732b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1733b24ab676SJeff Bonwick 	if (txg == 0) {
1734b24ab676SJeff Bonwick 		dmu_buf_rele(db, FTAG);
1735b24ab676SJeff Bonwick 		ztest_object_unlock(zd, lr->lr_foid);
1736b24ab676SJeff Bonwick 		return (ENOSPC);
1737b24ab676SJeff Bonwick 	}
1738b24ab676SJeff Bonwick 
1739b24ab676SJeff Bonwick 	bbt = ztest_bt_bonus(db);
1740b24ab676SJeff Bonwick 	ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1741b24ab676SJeff Bonwick 	crtxg = bbt->bt_crtxg;
1742b24ab676SJeff Bonwick 	lrtxg = lr->lr_common.lrc_txg;
1743b24ab676SJeff Bonwick 
1744b24ab676SJeff Bonwick 	if (zd->zd_zilog->zl_replay) {
1745b24ab676SJeff Bonwick 		ASSERT(lr->lr_size != 0);
1746b24ab676SJeff Bonwick 		ASSERT(lr->lr_mode != 0);
1747b24ab676SJeff Bonwick 		ASSERT(lrtxg != 0);
1748b24ab676SJeff Bonwick 	} else {
1749b24ab676SJeff Bonwick 		/*
1750b24ab676SJeff Bonwick 		 * Randomly change the size and increment the generation.
1751b24ab676SJeff Bonwick 		 */
1752b24ab676SJeff Bonwick 		lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
1753b24ab676SJeff Bonwick 		    sizeof (*bbt);
1754b24ab676SJeff Bonwick 		lr->lr_mode = bbt->bt_gen + 1;
1755b24ab676SJeff Bonwick 		ASSERT(lrtxg == 0);
1756b24ab676SJeff Bonwick 	}
1757b24ab676SJeff Bonwick 
1758b24ab676SJeff Bonwick 	/*
1759b24ab676SJeff Bonwick 	 * Verify that the current bonus buffer is not newer than our txg.
1760b24ab676SJeff Bonwick 	 */
1761b24ab676SJeff Bonwick 	ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode,
1762b24ab676SJeff Bonwick 	    MAX(txg, lrtxg), crtxg);
1763b24ab676SJeff Bonwick 
1764b24ab676SJeff Bonwick 	dmu_buf_will_dirty(db, tx);
1765b24ab676SJeff Bonwick 
1766b24ab676SJeff Bonwick 	ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
1767b24ab676SJeff Bonwick 	ASSERT3U(lr->lr_size, <=, db->db_size);
1768fb09f5aaSMadhav Suresh 	VERIFY0(dmu_set_bonus(db, lr->lr_size, tx));
1769b24ab676SJeff Bonwick 	bbt = ztest_bt_bonus(db);
1770b24ab676SJeff Bonwick 
1771b24ab676SJeff Bonwick 	ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg);
1772b24ab676SJeff Bonwick 
1773b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
1774b24ab676SJeff Bonwick 
1775b24ab676SJeff Bonwick 	(void) ztest_log_setattr(zd, tx, lr);
1776b24ab676SJeff Bonwick 
1777b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1778b24ab676SJeff Bonwick 
1779b24ab676SJeff Bonwick 	ztest_object_unlock(zd, lr->lr_foid);
1780b24ab676SJeff Bonwick 
1781b24ab676SJeff Bonwick 	return (0);
1782b24ab676SJeff Bonwick }
1783b24ab676SJeff Bonwick 
1784b24ab676SJeff Bonwick zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = {
1785b24ab676SJeff Bonwick 	NULL,			/* 0 no such transaction type */
1786b24ab676SJeff Bonwick 	ztest_replay_create,	/* TX_CREATE */
1787b24ab676SJeff Bonwick 	NULL,			/* TX_MKDIR */
1788b24ab676SJeff Bonwick 	NULL,			/* TX_MKXATTR */
1789b24ab676SJeff Bonwick 	NULL,			/* TX_SYMLINK */
1790b24ab676SJeff Bonwick 	ztest_replay_remove,	/* TX_REMOVE */
1791b24ab676SJeff Bonwick 	NULL,			/* TX_RMDIR */
1792b24ab676SJeff Bonwick 	NULL,			/* TX_LINK */
1793b24ab676SJeff Bonwick 	NULL,			/* TX_RENAME */
1794b24ab676SJeff Bonwick 	ztest_replay_write,	/* TX_WRITE */
1795b24ab676SJeff Bonwick 	ztest_replay_truncate,	/* TX_TRUNCATE */
1796b24ab676SJeff Bonwick 	ztest_replay_setattr,	/* TX_SETATTR */
1797b24ab676SJeff Bonwick 	NULL,			/* TX_ACL */
1798b24ab676SJeff Bonwick 	NULL,			/* TX_CREATE_ACL */
1799b24ab676SJeff Bonwick 	NULL,			/* TX_CREATE_ATTR */
1800b24ab676SJeff Bonwick 	NULL,			/* TX_CREATE_ACL_ATTR */
1801b24ab676SJeff Bonwick 	NULL,			/* TX_MKDIR_ACL */
1802b24ab676SJeff Bonwick 	NULL,			/* TX_MKDIR_ATTR */
1803b24ab676SJeff Bonwick 	NULL,			/* TX_MKDIR_ACL_ATTR */
1804b24ab676SJeff Bonwick 	NULL,			/* TX_WRITE2 */
1805b24ab676SJeff Bonwick };
1806b24ab676SJeff Bonwick 
1807b24ab676SJeff Bonwick /*
1808b24ab676SJeff Bonwick  * ZIL get_data callbacks
1809b24ab676SJeff Bonwick  */
1810b24ab676SJeff Bonwick 
1811b24ab676SJeff Bonwick static void
1812b24ab676SJeff Bonwick ztest_get_done(zgd_t *zgd, int error)
1813b24ab676SJeff Bonwick {
1814b24ab676SJeff Bonwick 	ztest_ds_t *zd = zgd->zgd_private;
1815b24ab676SJeff Bonwick 	uint64_t object = zgd->zgd_rl->rl_object;
1816b24ab676SJeff Bonwick 
1817b24ab676SJeff Bonwick 	if (zgd->zgd_db)
1818b24ab676SJeff Bonwick 		dmu_buf_rele(zgd->zgd_db, zgd);
1819b24ab676SJeff Bonwick 
1820b24ab676SJeff Bonwick 	ztest_range_unlock(zgd->zgd_rl);
1821b24ab676SJeff Bonwick 	ztest_object_unlock(zd, object);
1822b24ab676SJeff Bonwick 
1823b24ab676SJeff Bonwick 	if (error == 0 && zgd->zgd_bp)
1824b24ab676SJeff Bonwick 		zil_add_block(zgd->zgd_zilog, zgd->zgd_bp);
1825b24ab676SJeff Bonwick 
1826b24ab676SJeff Bonwick 	umem_free(zgd, sizeof (*zgd));
1827b24ab676SJeff Bonwick }
1828b24ab676SJeff Bonwick 
1829b24ab676SJeff Bonwick static int
1830b24ab676SJeff Bonwick ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio)
1831b24ab676SJeff Bonwick {
1832b24ab676SJeff Bonwick 	ztest_ds_t *zd = arg;
1833b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1834b24ab676SJeff Bonwick 	uint64_t object = lr->lr_foid;
1835b24ab676SJeff Bonwick 	uint64_t offset = lr->lr_offset;
1836b24ab676SJeff Bonwick 	uint64_t size = lr->lr_length;
1837b24ab676SJeff Bonwick 	blkptr_t *bp = &lr->lr_blkptr;
1838b24ab676SJeff Bonwick 	uint64_t txg = lr->lr_common.lrc_txg;
1839b24ab676SJeff Bonwick 	uint64_t crtxg;
1840b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1841b24ab676SJeff Bonwick 	dmu_buf_t *db;
1842b24ab676SJeff Bonwick 	zgd_t *zgd;
1843b24ab676SJeff Bonwick 	int error;
1844b24ab676SJeff Bonwick 
1845b24ab676SJeff Bonwick 	ztest_object_lock(zd, object, RL_READER);
1846b24ab676SJeff Bonwick 	error = dmu_bonus_hold(os, object, FTAG, &db);
1847b24ab676SJeff Bonwick 	if (error) {
1848b24ab676SJeff Bonwick 		ztest_object_unlock(zd, object);
1849b24ab676SJeff Bonwick 		return (error);
1850b24ab676SJeff Bonwick 	}
1851b24ab676SJeff Bonwick 
1852b24ab676SJeff Bonwick 	crtxg = ztest_bt_bonus(db)->bt_crtxg;
1853b24ab676SJeff Bonwick 
1854b24ab676SJeff Bonwick 	if (crtxg == 0 || crtxg > txg) {
1855b24ab676SJeff Bonwick 		dmu_buf_rele(db, FTAG);
1856b24ab676SJeff Bonwick 		ztest_object_unlock(zd, object);
1857b24ab676SJeff Bonwick 		return (ENOENT);
1858b24ab676SJeff Bonwick 	}
1859b24ab676SJeff Bonwick 
1860b24ab676SJeff Bonwick 	dmu_object_info_from_db(db, &doi);
1861b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
1862b24ab676SJeff Bonwick 	db = NULL;
1863b24ab676SJeff Bonwick 
1864b24ab676SJeff Bonwick 	zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
1865b24ab676SJeff Bonwick 	zgd->zgd_zilog = zd->zd_zilog;
1866b24ab676SJeff Bonwick 	zgd->zgd_private = zd;
1867b24ab676SJeff Bonwick 
1868b24ab676SJeff Bonwick 	if (buf != NULL) {	/* immediate write */
1869b24ab676SJeff Bonwick 		zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1870b24ab676SJeff Bonwick 		    RL_READER);
1871b24ab676SJeff Bonwick 
1872b24ab676SJeff Bonwick 		error = dmu_read(os, object, offset, size, buf,
1873b24ab676SJeff Bonwick 		    DMU_READ_NO_PREFETCH);
1874b24ab676SJeff Bonwick 		ASSERT(error == 0);
1875b24ab676SJeff Bonwick 	} else {
1876b24ab676SJeff Bonwick 		size = doi.doi_data_block_size;
1877dfe73b3dSJeff Bonwick 		if (ISP2(size)) {
1878b24ab676SJeff Bonwick 			offset = P2ALIGN(offset, size);
1879dfe73b3dSJeff Bonwick 		} else {
1880dfe73b3dSJeff Bonwick 			ASSERT(offset < size);
1881dfe73b3dSJeff Bonwick 			offset = 0;
1882dfe73b3dSJeff Bonwick 		}
1883b24ab676SJeff Bonwick 
1884b24ab676SJeff Bonwick 		zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1885b24ab676SJeff Bonwick 		    RL_READER);
1886b24ab676SJeff Bonwick 
188747cb52daSJeff Bonwick 		error = dmu_buf_hold(os, object, offset, zgd, &db,
188847cb52daSJeff Bonwick 		    DMU_READ_NO_PREFETCH);
1889b24ab676SJeff Bonwick 
1890b24ab676SJeff Bonwick 		if (error == 0) {
189180901aeaSGeorge Wilson 			blkptr_t *obp = dmu_buf_get_blkptr(db);
189280901aeaSGeorge Wilson 			if (obp) {
189380901aeaSGeorge Wilson 				ASSERT(BP_IS_HOLE(bp));
189480901aeaSGeorge Wilson 				*bp = *obp;
189580901aeaSGeorge Wilson 			}
189680901aeaSGeorge Wilson 
1897b24ab676SJeff Bonwick 			zgd->zgd_db = db;
1898b24ab676SJeff Bonwick 			zgd->zgd_bp = bp;
1899b24ab676SJeff Bonwick 
1900b24ab676SJeff Bonwick 			ASSERT(db->db_offset == offset);
1901b24ab676SJeff Bonwick 			ASSERT(db->db_size == size);
1902b24ab676SJeff Bonwick 
1903b24ab676SJeff Bonwick 			error = dmu_sync(zio, lr->lr_common.lrc_txg,
1904b24ab676SJeff Bonwick 			    ztest_get_done, zgd);
1905b24ab676SJeff Bonwick 
1906b24ab676SJeff Bonwick 			if (error == 0)
1907b24ab676SJeff Bonwick 				return (0);
1908b24ab676SJeff Bonwick 		}
1909b24ab676SJeff Bonwick 	}
1910b24ab676SJeff Bonwick 
1911b24ab676SJeff Bonwick 	ztest_get_done(zgd, error);
1912b24ab676SJeff Bonwick 
1913b24ab676SJeff Bonwick 	return (error);
1914b24ab676SJeff Bonwick }
1915b24ab676SJeff Bonwick 
1916b24ab676SJeff Bonwick static void *
1917b24ab676SJeff Bonwick ztest_lr_alloc(size_t lrsize, char *name)
1918b24ab676SJeff Bonwick {
1919b24ab676SJeff Bonwick 	char *lr;
1920b24ab676SJeff Bonwick 	size_t namesize = name ? strlen(name) + 1 : 0;
1921b24ab676SJeff Bonwick 
1922b24ab676SJeff Bonwick 	lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
1923b24ab676SJeff Bonwick 
1924b24ab676SJeff Bonwick 	if (name)
1925b24ab676SJeff Bonwick 		bcopy(name, lr + lrsize, namesize);
1926b24ab676SJeff Bonwick 
1927b24ab676SJeff Bonwick 	return (lr);
1928b24ab676SJeff Bonwick }
1929b24ab676SJeff Bonwick 
1930b24ab676SJeff Bonwick void
1931b24ab676SJeff Bonwick ztest_lr_free(void *lr, size_t lrsize, char *name)
1932b24ab676SJeff Bonwick {
1933b24ab676SJeff Bonwick 	size_t namesize = name ? strlen(name) + 1 : 0;
1934b24ab676SJeff Bonwick 
1935b24ab676SJeff Bonwick 	umem_free(lr, lrsize + namesize);
1936b24ab676SJeff Bonwick }
1937b24ab676SJeff Bonwick 
1938b24ab676SJeff Bonwick /*
1939b24ab676SJeff Bonwick  * Lookup a bunch of objects.  Returns the number of objects not found.
1940b24ab676SJeff Bonwick  */
1941b24ab676SJeff Bonwick static int
1942b24ab676SJeff Bonwick ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
1943b24ab676SJeff Bonwick {
1944b24ab676SJeff Bonwick 	int missing = 0;
1945b24ab676SJeff Bonwick 	int error;
1946b24ab676SJeff Bonwick 
1947b24ab676SJeff Bonwick 	ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1948b24ab676SJeff Bonwick 
1949b24ab676SJeff Bonwick 	for (int i = 0; i < count; i++, od++) {
1950b24ab676SJeff Bonwick 		od->od_object = 0;
1951b24ab676SJeff Bonwick 		error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
1952b24ab676SJeff Bonwick 		    sizeof (uint64_t), 1, &od->od_object);
1953b24ab676SJeff Bonwick 		if (error) {
1954b24ab676SJeff Bonwick 			ASSERT(error == ENOENT);
1955b24ab676SJeff Bonwick 			ASSERT(od->od_object == 0);
1956b24ab676SJeff Bonwick 			missing++;
1957b24ab676SJeff Bonwick 		} else {
1958b24ab676SJeff Bonwick 			dmu_buf_t *db;
1959b24ab676SJeff Bonwick 			ztest_block_tag_t *bbt;
1960b24ab676SJeff Bonwick 			dmu_object_info_t doi;
1961b24ab676SJeff Bonwick 
1962b24ab676SJeff Bonwick 			ASSERT(od->od_object != 0);
1963b24ab676SJeff Bonwick 			ASSERT(missing == 0);	/* there should be no gaps */
1964b24ab676SJeff Bonwick 
1965b24ab676SJeff Bonwick 			ztest_object_lock(zd, od->od_object, RL_READER);
1966b420f3adSRichard Lowe 			VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os,
1967b24ab676SJeff Bonwick 			    od->od_object, FTAG, &db));
1968b24ab676SJeff Bonwick 			dmu_object_info_from_db(db, &doi);
1969b24ab676SJeff Bonwick 			bbt = ztest_bt_bonus(db);
1970b24ab676SJeff Bonwick 			ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1971b24ab676SJeff Bonwick 			od->od_type = doi.doi_type;
1972b24ab676SJeff Bonwick 			od->od_blocksize = doi.doi_data_block_size;
1973b24ab676SJeff Bonwick 			od->od_gen = bbt->bt_gen;
1974b24ab676SJeff Bonwick 			dmu_buf_rele(db, FTAG);
1975b24ab676SJeff Bonwick 			ztest_object_unlock(zd, od->od_object);
1976b24ab676SJeff Bonwick 		}
1977b24ab676SJeff Bonwick 	}
1978b24ab676SJeff Bonwick 
1979b24ab676SJeff Bonwick 	return (missing);
1980b24ab676SJeff Bonwick }
1981b24ab676SJeff Bonwick 
1982b24ab676SJeff Bonwick static int
1983b24ab676SJeff Bonwick ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
1984b24ab676SJeff Bonwick {
1985b24ab676SJeff Bonwick 	int missing = 0;
1986b24ab676SJeff Bonwick 
1987b24ab676SJeff Bonwick 	ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1988b24ab676SJeff Bonwick 
1989b24ab676SJeff Bonwick 	for (int i = 0; i < count; i++, od++) {
1990b24ab676SJeff Bonwick 		if (missing) {
1991b24ab676SJeff Bonwick 			od->od_object = 0;
1992b24ab676SJeff Bonwick 			missing++;
1993b24ab676SJeff Bonwick 			continue;
1994b24ab676SJeff Bonwick 		}
1995b24ab676SJeff Bonwick 
1996b24ab676SJeff Bonwick 		lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
1997b24ab676SJeff Bonwick 
1998b24ab676SJeff Bonwick 		lr->lr_doid = od->od_dir;
1999b24ab676SJeff Bonwick 		lr->lr_foid = 0;	/* 0 to allocate, > 0 to claim */
2000b24ab676SJeff Bonwick 		lr->lrz_type = od->od_crtype;
2001b24ab676SJeff Bonwick 		lr->lrz_blocksize = od->od_crblocksize;
2002b24ab676SJeff Bonwick 		lr->lrz_ibshift = ztest_random_ibshift();
2003b24ab676SJeff Bonwick 		lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
2004b24ab676SJeff Bonwick 		lr->lrz_bonuslen = dmu_bonus_max();
2005b24ab676SJeff Bonwick 		lr->lr_gen = od->od_crgen;
2006b24ab676SJeff Bonwick 		lr->lr_crtime[0] = time(NULL);
2007b24ab676SJeff Bonwick 
2008b24ab676SJeff Bonwick 		if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
2009b24ab676SJeff Bonwick 			ASSERT(missing == 0);
2010b24ab676SJeff Bonwick 			od->od_object = 0;
2011b24ab676SJeff Bonwick 			missing++;
2012b24ab676SJeff Bonwick 		} else {
2013b24ab676SJeff Bonwick 			od->od_object = lr->lr_foid;
2014b24ab676SJeff Bonwick 			od->od_type = od->od_crtype;
2015b24ab676SJeff Bonwick 			od->od_blocksize = od->od_crblocksize;
2016b24ab676SJeff Bonwick 			od->od_gen = od->od_crgen;
2017b24ab676SJeff Bonwick 			ASSERT(od->od_object != 0);
2018b24ab676SJeff Bonwick 		}
2019b24ab676SJeff Bonwick 
2020b24ab676SJeff Bonwick 		ztest_lr_free(lr, sizeof (*lr), od->od_name);
2021b24ab676SJeff Bonwick 	}
2022b24ab676SJeff Bonwick 
2023b24ab676SJeff Bonwick 	return (missing);
2024b24ab676SJeff Bonwick }
2025b24ab676SJeff Bonwick 
2026b24ab676SJeff Bonwick static int
2027b24ab676SJeff Bonwick ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
2028b24ab676SJeff Bonwick {
2029b24ab676SJeff Bonwick 	int missing = 0;
2030b24ab676SJeff Bonwick 	int error;
2031b24ab676SJeff Bonwick 
2032b24ab676SJeff Bonwick 	ASSERT(_mutex_held(&zd->zd_dirobj_lock));
2033b24ab676SJeff Bonwick 
2034b24ab676SJeff Bonwick 	od += count - 1;
2035b24ab676SJeff Bonwick 
2036b24ab676SJeff Bonwick 	for (int i = count - 1; i >= 0; i--, od--) {
2037b24ab676SJeff Bonwick 		if (missing) {
2038b24ab676SJeff Bonwick 			missing++;
2039b24ab676SJeff Bonwick 			continue;
2040b24ab676SJeff Bonwick 		}
2041b24ab676SJeff Bonwick 
204280901aeaSGeorge Wilson 		/*
204380901aeaSGeorge Wilson 		 * No object was found.
204480901aeaSGeorge Wilson 		 */
2045b24ab676SJeff Bonwick 		if (od->od_object == 0)
2046b24ab676SJeff Bonwick 			continue;
2047b24ab676SJeff Bonwick 
2048b24ab676SJeff Bonwick 		lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2049b24ab676SJeff Bonwick 
2050b24ab676SJeff Bonwick 		lr->lr_doid = od->od_dir;
2051b24ab676SJeff Bonwick 
2052b24ab676SJeff Bonwick 		if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
2053b24ab676SJeff Bonwick 			ASSERT3U(error, ==, ENOSPC);
2054b24ab676SJeff Bonwick 			missing++;
2055b24ab676SJeff Bonwick 		} else {
2056b24ab676SJeff Bonwick 			od->od_object = 0;
2057b24ab676SJeff Bonwick 		}
2058b24ab676SJeff Bonwick 		ztest_lr_free(lr, sizeof (*lr), od->od_name);
2059b24ab676SJeff Bonwick 	}
2060b24ab676SJeff Bonwick 
2061b24ab676SJeff Bonwick 	return (missing);
2062b24ab676SJeff Bonwick }
2063b24ab676SJeff Bonwick 
2064b24ab676SJeff Bonwick static int
2065b24ab676SJeff Bonwick ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
2066b24ab676SJeff Bonwick     void *data)
2067b24ab676SJeff Bonwick {
2068b24ab676SJeff Bonwick 	lr_write_t *lr;
2069b24ab676SJeff Bonwick 	int error;
2070b24ab676SJeff Bonwick 
2071b24ab676SJeff Bonwick 	lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
2072b24ab676SJeff Bonwick 
2073b24ab676SJeff Bonwick 	lr->lr_foid = object;
2074b24ab676SJeff Bonwick 	lr->lr_offset = offset;
2075b24ab676SJeff Bonwick 	lr->lr_length = size;
2076b24ab676SJeff Bonwick 	lr->lr_blkoff = 0;
2077b24ab676SJeff Bonwick 	BP_ZERO(&lr->lr_blkptr);
2078b24ab676SJeff Bonwick 
2079b24ab676SJeff Bonwick 	bcopy(data, lr + 1, size);
2080b24ab676SJeff Bonwick 
2081b24ab676SJeff Bonwick 	error = ztest_replay_write(zd, lr, B_FALSE);
2082b24ab676SJeff Bonwick 
2083b24ab676SJeff Bonwick 	ztest_lr_free(lr, sizeof (*lr) + size, NULL);
2084b24ab676SJeff Bonwick 
2085b24ab676SJeff Bonwick 	return (error);
2086b24ab676SJeff Bonwick }
2087b24ab676SJeff Bonwick 
2088b24ab676SJeff Bonwick static int
2089b24ab676SJeff Bonwick ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2090b24ab676SJeff Bonwick {
2091b24ab676SJeff Bonwick 	lr_truncate_t *lr;
2092b24ab676SJeff Bonwick 	int error;
2093b24ab676SJeff Bonwick 
2094b24ab676SJeff Bonwick 	lr = ztest_lr_alloc(sizeof (*lr), NULL);
2095b24ab676SJeff Bonwick 
2096b24ab676SJeff Bonwick 	lr->lr_foid = object;
2097b24ab676SJeff Bonwick 	lr->lr_offset = offset;
2098b24ab676SJeff Bonwick 	lr->lr_length = size;
2099b24ab676SJeff Bonwick 
2100b24ab676SJeff Bonwick 	error = ztest_replay_truncate(zd, lr, B_FALSE);
2101b24ab676SJeff Bonwick 
2102b24ab676SJeff Bonwick 	ztest_lr_free(lr, sizeof (*lr), NULL);
2103b24ab676SJeff Bonwick 
2104b24ab676SJeff Bonwick 	return (error);
2105b24ab676SJeff Bonwick }
2106b24ab676SJeff Bonwick 
2107b24ab676SJeff Bonwick static int
2108b24ab676SJeff Bonwick ztest_setattr(ztest_ds_t *zd, uint64_t object)
2109b24ab676SJeff Bonwick {
2110b24ab676SJeff Bonwick 	lr_setattr_t *lr;
2111b24ab676SJeff Bonwick 	int error;
2112b24ab676SJeff Bonwick 
2113b24ab676SJeff Bonwick 	lr = ztest_lr_alloc(sizeof (*lr), NULL);
2114b24ab676SJeff Bonwick 
2115b24ab676SJeff Bonwick 	lr->lr_foid = object;
2116b24ab676SJeff Bonwick 	lr->lr_size = 0;
2117b24ab676SJeff Bonwick 	lr->lr_mode = 0;
2118b24ab676SJeff Bonwick 
2119b24ab676SJeff Bonwick 	error = ztest_replay_setattr(zd, lr, B_FALSE);
2120b24ab676SJeff Bonwick 
2121b24ab676SJeff Bonwick 	ztest_lr_free(lr, sizeof (*lr), NULL);
2122b24ab676SJeff Bonwick 
2123b24ab676SJeff Bonwick 	return (error);
2124b24ab676SJeff Bonwick }
2125b24ab676SJeff Bonwick 
2126b24ab676SJeff Bonwick static void
2127b24ab676SJeff Bonwick ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2128b24ab676SJeff Bonwick {
2129b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
2130b24ab676SJeff Bonwick 	dmu_tx_t *tx;
2131b24ab676SJeff Bonwick 	uint64_t txg;
2132b24ab676SJeff Bonwick 	rl_t *rl;
2133b24ab676SJeff Bonwick 
2134b24ab676SJeff Bonwick 	txg_wait_synced(dmu_objset_pool(os), 0);
2135b24ab676SJeff Bonwick 
2136b24ab676SJeff Bonwick 	ztest_object_lock(zd, object, RL_READER);
2137b24ab676SJeff Bonwick 	rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);
2138b24ab676SJeff Bonwick 
2139b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
2140b24ab676SJeff Bonwick 
2141b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, object, offset, size);
2142b24ab676SJeff Bonwick 
2143b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2144b24ab676SJeff Bonwick 
2145b24ab676SJeff Bonwick 	if (txg != 0) {
2146b24ab676SJeff Bonwick 		dmu_prealloc(os, object, offset, size, tx);
2147b24ab676SJeff Bonwick 		dmu_tx_commit(tx);
2148b24ab676SJeff Bonwick 		txg_wait_synced(dmu_objset_pool(os), txg);
2149b24ab676SJeff Bonwick 	} else {
2150b24ab676SJeff Bonwick 		(void) dmu_free_long_range(os, object, offset, size);
2151b24ab676SJeff Bonwick 	}
2152b24ab676SJeff Bonwick 
2153b24ab676SJeff Bonwick 	ztest_range_unlock(rl);
2154b24ab676SJeff Bonwick 	ztest_object_unlock(zd, object);
2155b24ab676SJeff Bonwick }
2156b24ab676SJeff Bonwick 
2157b24ab676SJeff Bonwick static void
2158b24ab676SJeff Bonwick ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
2159b24ab676SJeff Bonwick {
216080901aeaSGeorge Wilson 	int err;
2161b24ab676SJeff Bonwick 	ztest_block_tag_t wbt;
2162b24ab676SJeff Bonwick 	dmu_object_info_t doi;
2163b24ab676SJeff Bonwick 	enum ztest_io_type io_type;
2164b24ab676SJeff Bonwick 	uint64_t blocksize;
2165b24ab676SJeff Bonwick 	void *data;
2166b24ab676SJeff Bonwick 
2167b24ab676SJeff Bonwick 	VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0);
2168b24ab676SJeff Bonwick 	blocksize = doi.doi_data_block_size;
2169b24ab676SJeff Bonwick 	data = umem_alloc(blocksize, UMEM_NOFAIL);
2170b24ab676SJeff Bonwick 
2171b24ab676SJeff Bonwick 	/*
2172b24ab676SJeff Bonwick 	 * Pick an i/o type at random, biased toward writing block tags.
2173b24ab676SJeff Bonwick 	 */
2174b24ab676SJeff Bonwick 	io_type = ztest_random(ZTEST_IO_TYPES);
2175b24ab676SJeff Bonwick 	if (ztest_random(2) == 0)
2176b24ab676SJeff Bonwick 		io_type = ZTEST_IO_WRITE_TAG;
2177b24ab676SJeff Bonwick 
2178c9ba2a43SEric Schrock 	(void) rw_rdlock(&zd->zd_zilog_lock);
2179c9ba2a43SEric Schrock 
2180b24ab676SJeff Bonwick 	switch (io_type) {
2181b24ab676SJeff Bonwick 
2182b24ab676SJeff Bonwick 	case ZTEST_IO_WRITE_TAG:
2183b24ab676SJeff Bonwick 		ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0);
2184b24ab676SJeff Bonwick 		(void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
2185b24ab676SJeff Bonwick 		break;
2186b24ab676SJeff Bonwick 
2187b24ab676SJeff Bonwick 	case ZTEST_IO_WRITE_PATTERN:
2188b24ab676SJeff Bonwick 		(void) memset(data, 'a' + (object + offset) % 5, blocksize);
2189b24ab676SJeff Bonwick 		if (ztest_random(2) == 0) {
2190b24ab676SJeff Bonwick 			/*
2191b24ab676SJeff Bonwick 			 * Induce fletcher2 collisions to ensure that
2192b24ab676SJeff Bonwick 			 * zio_ddt_collision() detects and resolves them
2193b24ab676SJeff Bonwick 			 * when using fletcher2-verify for deduplication.
2194b24ab676SJeff Bonwick 			 */
2195b24ab676SJeff Bonwick 			((uint64_t *)data)[0] ^= 1ULL << 63;
2196b24ab676SJeff Bonwick 			((uint64_t *)data)[4] ^= 1ULL << 63;
2197b24ab676SJeff Bonwick 		}
2198b24ab676SJeff Bonwick 		(void) ztest_write(zd, object, offset, blocksize, data);
2199b24ab676SJeff Bonwick 		break;
2200b24ab676SJeff Bonwick 
2201b24ab676SJeff Bonwick 	case ZTEST_IO_WRITE_ZEROES:
2202b24ab676SJeff Bonwick 		bzero(data, blocksize);
2203b24ab676SJeff Bonwick 		(void) ztest_write(zd, object, offset, blocksize, data);
2204b24ab676SJeff Bonwick 		break;
2205b24ab676SJeff Bonwick 
2206b24ab676SJeff Bonwick 	case ZTEST_IO_TRUNCATE:
2207b24ab676SJeff Bonwick 		(void) ztest_truncate(zd, object, offset, blocksize);
2208b24ab676SJeff Bonwick 		break;
2209b24ab676SJeff Bonwick 
2210b24ab676SJeff Bonwick 	case ZTEST_IO_SETATTR:
2211b24ab676SJeff Bonwick 		(void) ztest_setattr(zd, object);
2212b24ab676SJeff Bonwick 		break;
221380901aeaSGeorge Wilson 
221480901aeaSGeorge Wilson 	case ZTEST_IO_REWRITE:
221580901aeaSGeorge Wilson 		(void) rw_rdlock(&ztest_name_lock);
221680901aeaSGeorge Wilson 		err = ztest_dsl_prop_set_uint64(zd->zd_name,
221780901aeaSGeorge Wilson 		    ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
221880901aeaSGeorge Wilson 		    B_FALSE);
221980901aeaSGeorge Wilson 		VERIFY(err == 0 || err == ENOSPC);
222080901aeaSGeorge Wilson 		err = ztest_dsl_prop_set_uint64(zd->zd_name,
222180901aeaSGeorge Wilson 		    ZFS_PROP_COMPRESSION,
222280901aeaSGeorge Wilson 		    ztest_random_dsl_prop(ZFS_PROP_COMPRESSION),
222380901aeaSGeorge Wilson 		    B_FALSE);
222480901aeaSGeorge Wilson 		VERIFY(err == 0 || err == ENOSPC);
222580901aeaSGeorge Wilson 		(void) rw_unlock(&ztest_name_lock);
222680901aeaSGeorge Wilson 
222780901aeaSGeorge Wilson 		VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data,
222880901aeaSGeorge Wilson 		    DMU_READ_NO_PREFETCH));
222980901aeaSGeorge Wilson 
223080901aeaSGeorge Wilson 		(void) ztest_write(zd, object, offset, blocksize, data);
223180901aeaSGeorge Wilson 		break;
2232b24ab676SJeff Bonwick 	}
2233b24ab676SJeff Bonwick 
2234c9ba2a43SEric Schrock 	(void) rw_unlock(&zd->zd_zilog_lock);
2235c9ba2a43SEric Schrock 
2236b24ab676SJeff Bonwick 	umem_free(data, blocksize);
2237b24ab676SJeff Bonwick }
2238b24ab676SJeff Bonwick 
2239b24ab676SJeff Bonwick /*
2240b24ab676SJeff Bonwick  * Initialize an object description template.
2241b24ab676SJeff Bonwick  */
2242b24ab676SJeff Bonwick static void
2243b24ab676SJeff Bonwick ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index,
2244b24ab676SJeff Bonwick     dmu_object_type_t type, uint64_t blocksize, uint64_t gen)
2245b24ab676SJeff Bonwick {
2246b24ab676SJeff Bonwick 	od->od_dir = ZTEST_DIROBJ;
2247b24ab676SJeff Bonwick 	od->od_object = 0;
2248b24ab676SJeff Bonwick 
2249b24ab676SJeff Bonwick 	od->od_crtype = type;
2250b24ab676SJeff Bonwick 	od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
2251b24ab676SJeff Bonwick 	od->od_crgen = gen;
2252b24ab676SJeff Bonwick 
2253b24ab676SJeff Bonwick 	od->od_type = DMU_OT_NONE;
2254b24ab676SJeff Bonwick 	od->od_blocksize = 0;
2255b24ab676SJeff Bonwick 	od->od_gen = 0;
2256b24ab676SJeff Bonwick 
2257b24ab676SJeff Bonwick 	(void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]",
2258b24ab676SJeff Bonwick 	    tag, (int64_t)id, index);
2259b24ab676SJeff Bonwick }
2260b24ab676SJeff Bonwick 
2261b24ab676SJeff Bonwick /*
2262b24ab676SJeff Bonwick  * Lookup or create the objects for a test using the od template.
2263b24ab676SJeff Bonwick  * If the objects do not all exist, or if 'remove' is specified,
2264b24ab676SJeff Bonwick  * remove any existing objects and create new ones.  Otherwise,
2265b24ab676SJeff Bonwick  * use the existing objects.
2266b24ab676SJeff Bonwick  */
2267b24ab676SJeff Bonwick static int
2268b24ab676SJeff Bonwick ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
2269b24ab676SJeff Bonwick {
2270b24ab676SJeff Bonwick 	int count = size / sizeof (*od);
2271b24ab676SJeff Bonwick 	int rv = 0;
2272b24ab676SJeff Bonwick 
2273b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0);
2274b24ab676SJeff Bonwick 	if ((ztest_lookup(zd, od, count) != 0 || remove) &&
2275b24ab676SJeff Bonwick 	    (ztest_remove(zd, od, count) != 0 ||
2276b24ab676SJeff Bonwick 	    ztest_create(zd, od, count) != 0))
2277b24ab676SJeff Bonwick 		rv = -1;
2278b24ab676SJeff Bonwick 	zd->zd_od = od;
2279b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2280b24ab676SJeff Bonwick 
2281b24ab676SJeff Bonwick 	return (rv);
2282b24ab676SJeff Bonwick }
2283b24ab676SJeff Bonwick 
2284b24ab676SJeff Bonwick /* ARGSUSED */
2285b24ab676SJeff Bonwick void
2286b24ab676SJeff Bonwick ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
2287b24ab676SJeff Bonwick {
2288b24ab676SJeff Bonwick 	zilog_t *zilog = zd->zd_zilog;
2289b24ab676SJeff Bonwick 
2290c9ba2a43SEric Schrock 	(void) rw_rdlock(&zd->zd_zilog_lock);
2291c9ba2a43SEric Schrock 
22925002558fSNeil Perrin 	zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
2293b24ab676SJeff Bonwick 
2294b24ab676SJeff Bonwick 	/*
2295b24ab676SJeff Bonwick 	 * Remember the committed values in zd, which is in parent/child
2296b24ab676SJeff Bonwick 	 * shared memory.  If we die, the next iteration of ztest_run()
2297b24ab676SJeff Bonwick 	 * will verify that the log really does contain this record.
2298b24ab676SJeff Bonwick 	 */
2299b24ab676SJeff Bonwick 	mutex_enter(&zilog->zl_lock);
2300420dfc95SChris Siden 	ASSERT(zd->zd_shared != NULL);
2301420dfc95SChris Siden 	ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq);
2302420dfc95SChris Siden 	zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq;
2303b24ab676SJeff Bonwick 	mutex_exit(&zilog->zl_lock);
2304c9ba2a43SEric Schrock 
2305c9ba2a43SEric Schrock 	(void) rw_unlock(&zd->zd_zilog_lock);
2306c9ba2a43SEric Schrock }
2307c9ba2a43SEric Schrock 
2308c9ba2a43SEric Schrock /*
2309c9ba2a43SEric Schrock  * This function is designed to simulate the operations that occur during a
2310c9ba2a43SEric Schrock  * mount/unmount operation.  We hold the dataset across these operations in an
2311c9ba2a43SEric Schrock  * attempt to expose any implicit assumptions about ZIL management.
2312c9ba2a43SEric Schrock  */
2313c9ba2a43SEric Schrock /* ARGSUSED */
2314c9ba2a43SEric Schrock void
2315c9ba2a43SEric Schrock ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
2316c9ba2a43SEric Schrock {
2317c9ba2a43SEric Schrock 	objset_t *os = zd->zd_os;
2318c9ba2a43SEric Schrock 
231980901aeaSGeorge Wilson 	/*
232080901aeaSGeorge Wilson 	 * We grab the zd_dirobj_lock to ensure that no other thread is
232180901aeaSGeorge Wilson 	 * updating the zil (i.e. adding in-memory log records) and the
232280901aeaSGeorge Wilson 	 * zd_zilog_lock to block any I/O.
232380901aeaSGeorge Wilson 	 */
232480901aeaSGeorge Wilson 	VERIFY0(mutex_lock(&zd->zd_dirobj_lock));
2325c9ba2a43SEric Schrock 	(void) rw_wrlock(&zd->zd_zilog_lock);
2326c9ba2a43SEric Schrock 
2327c9ba2a43SEric Schrock 	/* zfsvfs_teardown() */
2328c9ba2a43SEric Schrock 	zil_close(zd->zd_zilog);
2329c9ba2a43SEric Schrock 
2330c9ba2a43SEric Schrock 	/* zfsvfs_setup() */
2331c9ba2a43SEric Schrock 	VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog);
2332c9ba2a43SEric Schrock 	zil_replay(os, zd, ztest_replay_vector);
2333c9ba2a43SEric Schrock 
2334c9ba2a43SEric Schrock 	(void) rw_unlock(&zd->zd_zilog_lock);
2335ce636f8bSMatthew Ahrens 	VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2336b24ab676SJeff Bonwick }
2337b24ab676SJeff Bonwick 
2338b24ab676SJeff Bonwick /*
2339b24ab676SJeff Bonwick  * Verify that we can't destroy an active pool, create an existing pool,
2340b24ab676SJeff Bonwick  * or create a pool with a bad vdev spec.
2341b24ab676SJeff Bonwick  */
2342b24ab676SJeff Bonwick /* ARGSUSED */
2343b24ab676SJeff Bonwick void
2344b24ab676SJeff Bonwick ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
2345b24ab676SJeff Bonwick {
2346420dfc95SChris Siden 	ztest_shared_opts_t *zo = &ztest_opts;
2347b24ab676SJeff Bonwick 	spa_t *spa;
2348b24ab676SJeff Bonwick 	nvlist_t *nvroot;
2349b24ab676SJeff Bonwick 
2350b24ab676SJeff Bonwick 	/*
2351b24ab676SJeff Bonwick 	 * Attempt to create using a bad file.
2352b24ab676SJeff Bonwick 	 */
235325345e46SGeorge Wilson 	nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
2354b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==,
23554445fffbSMatthew Ahrens 	    spa_create("ztest_bad_file", nvroot, NULL, NULL));
2356b24ab676SJeff Bonwick 	nvlist_free(nvroot);
2357b24ab676SJeff Bonwick 
2358b24ab676SJeff Bonwick 	/*
2359b24ab676SJeff Bonwick 	 * Attempt to create using a bad mirror.
2360b24ab676SJeff Bonwick 	 */
236125345e46SGeorge Wilson 	nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1);
2362b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==,
23634445fffbSMatthew Ahrens 	    spa_create("ztest_bad_mirror", nvroot, NULL, NULL));
2364b24ab676SJeff Bonwick 	nvlist_free(nvroot);
2365b24ab676SJeff Bonwick 
2366b24ab676SJeff Bonwick 	/*
2367b24ab676SJeff Bonwick 	 * Attempt to create an existing pool.  It shouldn't matter
2368b24ab676SJeff Bonwick 	 * what's in the nvroot; we should fail with EEXIST.
2369b24ab676SJeff Bonwick 	 */
2370420dfc95SChris Siden 	(void) rw_rdlock(&ztest_name_lock);
237125345e46SGeorge Wilson 	nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
23724445fffbSMatthew Ahrens 	VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL));
2373b24ab676SJeff Bonwick 	nvlist_free(nvroot);
2374b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG));
2375420dfc95SChris Siden 	VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool));
2376b24ab676SJeff Bonwick 	spa_close(spa, FTAG);
2377b24ab676SJeff Bonwick 
2378420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
2379b24ab676SJeff Bonwick }
2380b24ab676SJeff Bonwick 
238125345e46SGeorge Wilson /* ARGSUSED */
238225345e46SGeorge Wilson void
238325345e46SGeorge Wilson ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
238425345e46SGeorge Wilson {
238525345e46SGeorge Wilson 	spa_t *spa;
238625345e46SGeorge Wilson 	uint64_t initial_version = SPA_VERSION_INITIAL;
238725345e46SGeorge Wilson 	uint64_t version, newversion;
238825345e46SGeorge Wilson 	nvlist_t *nvroot, *props;
238925345e46SGeorge Wilson 	char *name;
239025345e46SGeorge Wilson 
239125345e46SGeorge Wilson 	VERIFY0(mutex_lock(&ztest_vdev_lock));
239225345e46SGeorge Wilson 	name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool);
239325345e46SGeorge Wilson 
239425345e46SGeorge Wilson 	/*
239525345e46SGeorge Wilson 	 * Clean up from previous runs.
239625345e46SGeorge Wilson 	 */
239725345e46SGeorge Wilson 	(void) spa_destroy(name);
239825345e46SGeorge Wilson 
239925345e46SGeorge Wilson 	nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0,
240025345e46SGeorge Wilson 	    0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1);
240125345e46SGeorge Wilson 
240225345e46SGeorge Wilson 	/*
240325345e46SGeorge Wilson 	 * If we're configuring a RAIDZ device then make sure that the
240425345e46SGeorge Wilson 	 * the initial version is capable of supporting that feature.
240525345e46SGeorge Wilson 	 */
240625345e46SGeorge Wilson 	switch (ztest_opts.zo_raidz_parity) {
240725345e46SGeorge Wilson 	case 0:
240825345e46SGeorge Wilson 	case 1:
240925345e46SGeorge Wilson 		initial_version = SPA_VERSION_INITIAL;
241025345e46SGeorge Wilson 		break;
241125345e46SGeorge Wilson 	case 2:
241225345e46SGeorge Wilson 		initial_version = SPA_VERSION_RAIDZ2;
241325345e46SGeorge Wilson 		break;
241425345e46SGeorge Wilson 	case 3:
241525345e46SGeorge Wilson 		initial_version = SPA_VERSION_RAIDZ3;
241625345e46SGeorge Wilson 		break;
241725345e46SGeorge Wilson 	}
241825345e46SGeorge Wilson 
241925345e46SGeorge Wilson 	/*
242025345e46SGeorge Wilson 	 * Create a pool with a spa version that can be upgraded. Pick
242125345e46SGeorge Wilson 	 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES.
242225345e46SGeorge Wilson 	 */
242325345e46SGeorge Wilson 	do {
242425345e46SGeorge Wilson 		version = ztest_random_spa_version(initial_version);
242525345e46SGeorge Wilson 	} while (version > SPA_VERSION_BEFORE_FEATURES);
242625345e46SGeorge Wilson 
242725345e46SGeorge Wilson 	props = fnvlist_alloc();
242825345e46SGeorge Wilson 	fnvlist_add_uint64(props,
242925345e46SGeorge Wilson 	    zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
243025345e46SGeorge Wilson 	VERIFY0(spa_create(name, nvroot, props, NULL));
243125345e46SGeorge Wilson 	fnvlist_free(nvroot);
243225345e46SGeorge Wilson 	fnvlist_free(props);
243325345e46SGeorge Wilson 
243425345e46SGeorge Wilson 	VERIFY0(spa_open(name, &spa, FTAG));
243525345e46SGeorge Wilson 	VERIFY3U(spa_version(spa), ==, version);
243625345e46SGeorge Wilson 	newversion = ztest_random_spa_version(version + 1);
243725345e46SGeorge Wilson 
243825345e46SGeorge Wilson 	if (ztest_opts.zo_verbose >= 4) {
243925345e46SGeorge Wilson 		(void) printf("upgrading spa version from %llu to %llu\n",
244025345e46SGeorge Wilson 		    (u_longlong_t)version, (u_longlong_t)newversion);
244125345e46SGeorge Wilson 	}
244225345e46SGeorge Wilson 
244325345e46SGeorge Wilson 	spa_upgrade(spa, newversion);
244425345e46SGeorge Wilson 	VERIFY3U(spa_version(spa), >, version);
244525345e46SGeorge Wilson 	VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config,
244625345e46SGeorge Wilson 	    zpool_prop_to_name(ZPOOL_PROP_VERSION)));
244725345e46SGeorge Wilson 	spa_close(spa, FTAG);
244825345e46SGeorge Wilson 
244925345e46SGeorge Wilson 	strfree(name);
245025345e46SGeorge Wilson 	VERIFY0(mutex_unlock(&ztest_vdev_lock));
245125345e46SGeorge Wilson }
245225345e46SGeorge Wilson 
2453b24ab676SJeff Bonwick static vdev_t *
2454b24ab676SJeff Bonwick vdev_lookup_by_path(vdev_t *vd, const char *path)
2455b24ab676SJeff Bonwick {
2456b24ab676SJeff Bonwick 	vdev_t *mvd;
2457b24ab676SJeff Bonwick 
2458b24ab676SJeff Bonwick 	if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
2459b24ab676SJeff Bonwick 		return (vd);
2460b24ab676SJeff Bonwick 
2461b24ab676SJeff Bonwick 	for (int c = 0; c < vd->vdev_children; c++)
2462b24ab676SJeff Bonwick 		if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
2463b24ab676SJeff Bonwick 		    NULL)
2464b24ab676SJeff Bonwick 			return (mvd);
2465b24ab676SJeff Bonwick 
2466b24ab676SJeff Bonwick 	return (NULL);
2467b24ab676SJeff Bonwick }
2468b24ab676SJeff Bonwick 
2469b24ab676SJeff Bonwick /*
2470b24ab676SJeff Bonwick  * Find the first available hole which can be used as a top-level.
2471b24ab676SJeff Bonwick  */
2472b24ab676SJeff Bonwick int
2473b24ab676SJeff Bonwick find_vdev_hole(spa_t *spa)
2474b24ab676SJeff Bonwick {
2475b24ab676SJeff Bonwick 	vdev_t *rvd = spa->spa_root_vdev;
2476b24ab676SJeff Bonwick 	int c;
2477b24ab676SJeff Bonwick 
2478b24ab676SJeff Bonwick 	ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV);
2479b24ab676SJeff Bonwick 
2480b24ab676SJeff Bonwick 	for (c = 0; c < rvd->vdev_children; c++) {
2481b24ab676SJeff Bonwick 		vdev_t *cvd = rvd->vdev_child[c];
2482b24ab676SJeff Bonwick 
2483b24ab676SJeff Bonwick 		if (cvd->vdev_ishole)
2484b24ab676SJeff Bonwick 			break;
2485b24ab676SJeff Bonwick 	}
2486b24ab676SJeff Bonwick 	return (c);
2487b24ab676SJeff Bonwick }
2488b24ab676SJeff Bonwick 
2489b24ab676SJeff Bonwick /*
2490b24ab676SJeff Bonwick  * Verify that vdev_add() works as expected.
2491b24ab676SJeff Bonwick  */
2492b24ab676SJeff Bonwick /* ARGSUSED */
2493b24ab676SJeff Bonwick void
2494b24ab676SJeff Bonwick ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
2495b24ab676SJeff Bonwick {
2496b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2497420dfc95SChris Siden 	spa_t *spa = ztest_spa;
24981195e687SMark J Musante 	uint64_t leaves;
2499b24ab676SJeff Bonwick 	uint64_t guid;
2500b24ab676SJeff Bonwick 	nvlist_t *nvroot;
2501b24ab676SJeff Bonwick 	int error;
2502b24ab676SJeff Bonwick 
2503420dfc95SChris Siden 	VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
25043b2aab18SMatthew Ahrens 	leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz;
2505b24ab676SJeff Bonwick 
2506b24ab676SJeff Bonwick 	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2507b24ab676SJeff Bonwick 
2508b24ab676SJeff Bonwick 	ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves;
2509b24ab676SJeff Bonwick 
2510b24ab676SJeff Bonwick 	/*
2511b24ab676SJeff Bonwick 	 * If we have slogs then remove them 1/4 of the time.
2512b24ab676SJeff Bonwick 	 */
251388ecc943SGeorge Wilson 	if (spa_has_slogs(spa) && ztest_random(4) == 0) {
251488ecc943SGeorge Wilson 		/*
251588ecc943SGeorge Wilson 		 * Grab the guid from the head of the log class rotor.
251688ecc943SGeorge Wilson 		 */
2517b24ab676SJeff Bonwick 		guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid;
25188654d025Sperrin 
251988ecc943SGeorge Wilson 		spa_config_exit(spa, SCL_VDEV, FTAG);
2520fa9e4066Sahrens 
252188ecc943SGeorge Wilson 		/*
252288ecc943SGeorge Wilson 		 * We have to grab the zs_name_lock as writer to
252388ecc943SGeorge Wilson 		 * prevent a race between removing a slog (dmu_objset_find)
252488ecc943SGeorge Wilson 		 * and destroying a dataset. Removing the slog will
252588ecc943SGeorge Wilson 		 * grab a reference on the dataset which may cause
252688ecc943SGeorge Wilson 		 * dmu_objset_destroy() to fail with EBUSY thus
252788ecc943SGeorge Wilson 		 * leaving the dataset in an inconsistent state.
252888ecc943SGeorge Wilson 		 */
2529420dfc95SChris Siden 		VERIFY(rw_wrlock(&ztest_name_lock) == 0);
253088ecc943SGeorge Wilson 		error = spa_vdev_remove(spa, guid, B_FALSE);
2531420dfc95SChris Siden 		VERIFY(rw_unlock(&ztest_name_lock) == 0);
2532fa9e4066Sahrens 
253388ecc943SGeorge Wilson 		if (error && error != EEXIST)
253488ecc943SGeorge Wilson 			fatal(0, "spa_vdev_remove() = %d", error);
253588ecc943SGeorge Wilson 	} else {
253688ecc943SGeorge Wilson 		spa_config_exit(spa, SCL_VDEV, FTAG);
253788ecc943SGeorge Wilson 
253888ecc943SGeorge Wilson 		/*
253988ecc943SGeorge Wilson 		 * Make 1/4 of the devices be log devices.
254088ecc943SGeorge Wilson 		 */
254125345e46SGeorge Wilson 		nvroot = make_vdev_root(NULL, NULL, NULL,
2542420dfc95SChris Siden 		    ztest_opts.zo_vdev_size, 0,
2543420dfc95SChris Siden 		    ztest_random(4) == 0, ztest_opts.zo_raidz,
2544420dfc95SChris Siden 		    zs->zs_mirrors, 1);
254588ecc943SGeorge Wilson 
254688ecc943SGeorge Wilson 		error = spa_vdev_add(spa, nvroot);
254788ecc943SGeorge Wilson 		nvlist_free(nvroot);
254888ecc943SGeorge Wilson 
254988ecc943SGeorge Wilson 		if (error == ENOSPC)
255088ecc943SGeorge Wilson 			ztest_record_enospc("spa_vdev_add");
255188ecc943SGeorge Wilson 		else if (error != 0)
255288ecc943SGeorge Wilson 			fatal(0, "spa_vdev_add() = %d", error);
255388ecc943SGeorge Wilson 	}
255488ecc943SGeorge Wilson 
2555420dfc95SChris Siden 	VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2556e14bb325SJeff Bonwick }
2557fa9e4066Sahrens 
2558e14bb325SJeff Bonwick /*
2559e14bb325SJeff Bonwick  * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
2560e14bb325SJeff Bonwick  */
2561b24ab676SJeff Bonwick /* ARGSUSED */
2562e14bb325SJeff Bonwick void
2563b24ab676SJeff Bonwick ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
2564e14bb325SJeff Bonwick {
2565b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2566420dfc95SChris Siden 	spa_t *spa = ztest_spa;
256731157203SJeff Bonwick 	vdev_t *rvd = spa->spa_root_vdev;
2568e14bb325SJeff Bonwick 	spa_aux_vdev_t *sav;
2569e14bb325SJeff Bonwick 	char *aux;
2570e14bb325SJeff Bonwick 	uint64_t guid = 0;
2571e14bb325SJeff Bonwick 	int error;
2572e14bb325SJeff Bonwick 
257331157203SJeff Bonwick 	if (ztest_random(2) == 0) {
2574e14bb325SJeff Bonwick 		sav = &spa->spa_spares;
2575e14bb325SJeff Bonwick 		aux = ZPOOL_CONFIG_SPARES;
2576e14bb325SJeff Bonwick 	} else {
2577e14bb325SJeff Bonwick 		sav = &spa->spa_l2cache;
2578e14bb325SJeff Bonwick 		aux = ZPOOL_CONFIG_L2CACHE;
2579e14bb325SJeff Bonwick 	}
2580e14bb325SJeff Bonwick 
2581420dfc95SChris Siden 	VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2582e14bb325SJeff Bonwick 
2583e14bb325SJeff Bonwick 	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2584e14bb325SJeff Bonwick 
2585e14bb325SJeff Bonwick 	if (sav->sav_count != 0 && ztest_random(4) == 0) {
2586e14bb325SJeff Bonwick 		/*
2587e14bb325SJeff Bonwick 		 * Pick a random device to remove.
2588e14bb325SJeff Bonwick 		 */
2589e14bb325SJeff Bonwick 		guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid;
2590e14bb325SJeff Bonwick 	} else {
2591e14bb325SJeff Bonwick 		/*
2592e14bb325SJeff Bonwick 		 * Find an unused device we can add.
2593e14bb325SJeff Bonwick 		 */
2594b24ab676SJeff Bonwick 		zs->zs_vdev_aux = 0;
2595e14bb325SJeff Bonwick 		for (;;) {
2596e14bb325SJeff Bonwick 			char path[MAXPATHLEN];
2597e14bb325SJeff Bonwick 			int c;
2598420dfc95SChris Siden 			(void) snprintf(path, sizeof (path), ztest_aux_template,
2599420dfc95SChris Siden 			    ztest_opts.zo_dir, ztest_opts.zo_pool, aux,
2600420dfc95SChris Siden 			    zs->zs_vdev_aux);
2601e14bb325SJeff Bonwick 			for (c = 0; c < sav->sav_count; c++)
2602e14bb325SJeff Bonwick 				if (strcmp(sav->sav_vdevs[c]->vdev_path,
2603e14bb325SJeff Bonwick 				    path) == 0)
2604e14bb325SJeff Bonwick 					break;
260531157203SJeff Bonwick 			if (c == sav->sav_count &&
260631157203SJeff Bonwick 			    vdev_lookup_by_path(rvd, path) == NULL)
2607e14bb325SJeff Bonwick 				break;
2608b24ab676SJeff Bonwick 			zs->zs_vdev_aux++;
2609e14bb325SJeff Bonwick 		}
2610e14bb325SJeff Bonwick 	}
2611e14bb325SJeff Bonwick 
2612e14bb325SJeff Bonwick 	spa_config_exit(spa, SCL_VDEV, FTAG);
2613e14bb325SJeff Bonwick 
2614e14bb325SJeff Bonwick 	if (guid == 0) {
2615e14bb325SJeff Bonwick 		/*
2616e14bb325SJeff Bonwick 		 * Add a new device.
2617e14bb325SJeff Bonwick 		 */
261825345e46SGeorge Wilson 		nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL,
2619420dfc95SChris Siden 		    (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1);
2620e14bb325SJeff Bonwick 		error = spa_vdev_add(spa, nvroot);
2621e14bb325SJeff Bonwick 		if (error != 0)
2622e14bb325SJeff Bonwick 			fatal(0, "spa_vdev_add(%p) = %d", nvroot, error);
2623e14bb325SJeff Bonwick 		nvlist_free(nvroot);
2624e14bb325SJeff Bonwick 	} else {
2625e14bb325SJeff Bonwick 		/*
2626e14bb325SJeff Bonwick 		 * Remove an existing device.  Sometimes, dirty its
2627e14bb325SJeff Bonwick 		 * vdev state first to make sure we handle removal
2628e14bb325SJeff Bonwick 		 * of devices that have pending state changes.
2629e14bb325SJeff Bonwick 		 */
2630e14bb325SJeff Bonwick 		if (ztest_random(2) == 0)
2631573ca77eSGeorge Wilson 			(void) vdev_online(spa, guid, 0, NULL);
2632e14bb325SJeff Bonwick 
2633e14bb325SJeff Bonwick 		error = spa_vdev_remove(spa, guid, B_FALSE);
2634e14bb325SJeff Bonwick 		if (error != 0 && error != EBUSY)
2635e14bb325SJeff Bonwick 			fatal(0, "spa_vdev_remove(%llu) = %d", guid, error);
2636e14bb325SJeff Bonwick 	}
2637e14bb325SJeff Bonwick 
2638420dfc95SChris Siden 	VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2639fa9e4066Sahrens }
2640fa9e4066Sahrens 
26411195e687SMark J Musante /*
26421195e687SMark J Musante  * split a pool if it has mirror tlvdevs
26431195e687SMark J Musante  */
26441195e687SMark J Musante /* ARGSUSED */
26451195e687SMark J Musante void
26461195e687SMark J Musante ztest_split_pool(ztest_ds_t *zd, uint64_t id)
26471195e687SMark J Musante {
26481195e687SMark J Musante 	ztest_shared_t *zs = ztest_shared;
2649420dfc95SChris Siden 	spa_t *spa = ztest_spa;
26501195e687SMark J Musante 	vdev_t *rvd = spa->spa_root_vdev;
26511195e687SMark J Musante 	nvlist_t *tree, **child, *config, *split, **schild;
26521195e687SMark J Musante 	uint_t c, children, schildren = 0, lastlogid = 0;
26531195e687SMark J Musante 	int error = 0;
26541195e687SMark J Musante 
2655420dfc95SChris Siden 	VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
26561195e687SMark J Musante 
26571195e687SMark J Musante 	/* ensure we have a useable config; mirrors of raidz aren't supported */
2658420dfc95SChris Siden 	if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) {
2659420dfc95SChris Siden 		VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
26601195e687SMark J Musante 		return;
26611195e687SMark J Musante 	}
26621195e687SMark J Musante 
26631195e687SMark J Musante 	/* clean up the old pool, if any */
26641195e687SMark J Musante 	(void) spa_destroy("splitp");
26651195e687SMark J Musante 
26661195e687SMark J Musante 	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
26671195e687SMark J Musante 
26681195e687SMark J Musante 	/* generate a config from the existing config */
266998295d61SMark J Musante 	mutex_enter(&spa->spa_props_lock);
26701195e687SMark J Musante 	VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE,
26711195e687SMark J Musante 	    &tree) == 0);
267298295d61SMark J Musante 	mutex_exit(&spa->spa_props_lock);
267398295d61SMark J Musante 
26741195e687SMark J Musante 	VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
26751195e687SMark J Musante 	    &children) == 0);
26761195e687SMark J Musante 
26771195e687SMark J Musante 	schild = malloc(rvd->vdev_children * sizeof (nvlist_t *));
26781195e687SMark J Musante 	for (c = 0; c < children; c++) {
26791195e687SMark J Musante 		vdev_t *tvd = rvd->vdev_child[c];
26801195e687SMark J Musante 		nvlist_t **mchild;
26811195e687SMark J Musante 		uint_t mchildren;
26821195e687SMark J Musante 
26831195e687SMark J Musante 		if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
26841195e687SMark J Musante 			VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME,
26851195e687SMark J Musante 			    0) == 0);
26861195e687SMark J Musante 			VERIFY(nvlist_add_string(schild[schildren],
26871195e687SMark J Musante 			    ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0);
26881195e687SMark J Musante 			VERIFY(nvlist_add_uint64(schild[schildren],
26891195e687SMark J Musante 			    ZPOOL_CONFIG_IS_HOLE, 1) == 0);
26901195e687SMark J Musante 			if (lastlogid == 0)
26911195e687SMark J Musante 				lastlogid = schildren;
26921195e687SMark J Musante 			++schildren;
26931195e687SMark J Musante 			continue;
26941195e687SMark J Musante 		}
26951195e687SMark J Musante 		lastlogid = 0;
26961195e687SMark J Musante 		VERIFY(nvlist_lookup_nvlist_array(child[c],
26971195e687SMark J Musante 		    ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
26981195e687SMark J Musante 		VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0);
26991195e687SMark J Musante 	}
27001195e687SMark J Musante 
27011195e687SMark J Musante 	/* OK, create a config that can be used to split */
27021195e687SMark J Musante 	VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0);
27031195e687SMark J Musante 	VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE,
27041195e687SMark J Musante 	    VDEV_TYPE_ROOT) == 0);
27051195e687SMark J Musante 	VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild,
27061195e687SMark J Musante 	    lastlogid != 0 ? lastlogid : schildren) == 0);
27071195e687SMark J Musante 
27081195e687SMark J Musante 	VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0);
27091195e687SMark J Musante 	VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0);
27101195e687SMark J Musante 
27111195e687SMark J Musante 	for (c = 0; c < schildren; c++)
27121195e687SMark J Musante 		nvlist_free(schild[c]);
27131195e687SMark J Musante 	free(schild);
27141195e687SMark J Musante 	nvlist_free(split);
27151195e687SMark J Musante 
27161195e687SMark J Musante 	spa_config_exit(spa, SCL_VDEV, FTAG);
27171195e687SMark J Musante 
2718420dfc95SChris Siden 	(void) rw_wrlock(&ztest_name_lock);
27191195e687SMark J Musante 	error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
2720420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
27211195e687SMark J Musante 
27221195e687SMark J Musante 	nvlist_free(config);
27231195e687SMark J Musante 
27241195e687SMark J Musante 	if (error == 0) {
27251195e687SMark J Musante 		(void) printf("successful split - results:\n");
27261195e687SMark J Musante 		mutex_enter(&spa_namespace_lock);
27271195e687SMark J Musante 		show_pool_stats(spa);
27281195e687SMark J Musante 		show_pool_stats(spa_lookup("splitp"));
27291195e687SMark J Musante 		mutex_exit(&spa_namespace_lock);
27301195e687SMark J Musante 		++zs->zs_splits;
27311195e687SMark J Musante 		--zs->zs_mirrors;
27321195e687SMark J Musante 	}
2733420dfc95SChris Siden 	VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
27341195e687SMark J Musante 
27351195e687SMark J Musante }
27361195e687SMark J Musante 
2737fa9e4066Sahrens /*
2738fa9e4066Sahrens  * Verify that we can attach and detach devices.
2739fa9e4066Sahrens  */
2740b24ab676SJeff Bonwick /* ARGSUSED */
2741fa9e4066Sahrens void
2742b24ab676SJeff Bonwick ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
2743fa9e4066Sahrens {
2744b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2745420dfc95SChris Siden 	spa_t *spa = ztest_spa;
274631157203SJeff Bonwick 	spa_aux_vdev_t *sav = &spa->spa_spares;
2747fa9e4066Sahrens 	vdev_t *rvd = spa->spa_root_vdev;
2748ea8dc4b6Seschrock 	vdev_t *oldvd, *newvd, *pvd;
2749e14bb325SJeff Bonwick 	nvlist_t *root;
27501195e687SMark J Musante 	uint64_t leaves;
2751fa9e4066Sahrens 	uint64_t leaf, top;
2752ecc2d604Sbonwick 	uint64_t ashift = ztest_get_ashift();
27538ad4d6ddSJeff Bonwick 	uint64_t oldguid, pguid;
2754b4952e17SGeorge Wilson 	uint64_t oldsize, newsize;
2755ea8dc4b6Seschrock 	char oldpath[MAXPATHLEN], newpath[MAXPATHLEN];
2756fa9e4066Sahrens 	int replacing;
27579af0a4dfSJeff Bonwick 	int oldvd_has_siblings = B_FALSE;
275831157203SJeff Bonwick 	int newvd_is_spare = B_FALSE;
275931157203SJeff Bonwick 	int oldvd_is_log;
2760fa9e4066Sahrens 	int error, expected_error;
2761fa9e4066Sahrens 
2762420dfc95SChris Siden 	VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2763420dfc95SChris Siden 	leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
2764fa9e4066Sahrens 
2765e14bb325SJeff Bonwick 	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2766fa9e4066Sahrens 
2767fa9e4066Sahrens 	/*
2768fa9e4066Sahrens 	 * Decide whether to do an attach or a replace.
2769fa9e4066Sahrens 	 */
2770fa9e4066Sahrens 	replacing = ztest_random(2);
2771fa9e4066Sahrens 
2772fa9e4066Sahrens 	/*
2773fa9e4066Sahrens 	 * Pick a random top-level vdev.
2774fa9e4066Sahrens 	 */
2775b24ab676SJeff Bonwick 	top = ztest_random_vdev_top(spa, B_TRUE);
2776fa9e4066Sahrens 
2777fa9e4066Sahrens 	/*
2778fa9e4066Sahrens 	 * Pick a random leaf within it.
2779fa9e4066Sahrens 	 */
2780d41c4376SMark J Musante 	leaf = ztest_random(leaves);
2781fa9e4066Sahrens 
2782fa9e4066Sahrens 	/*
278331157203SJeff Bonwick 	 * Locate this vdev.
2784fa9e4066Sahrens 	 */
278531157203SJeff Bonwick 	oldvd = rvd->vdev_child[top];
27861195e687SMark J Musante 	if (zs->zs_mirrors >= 1) {
27878ad4d6ddSJeff Bonwick 		ASSERT(oldvd->vdev_ops == &vdev_mirror_ops);
27881195e687SMark J Musante 		ASSERT(oldvd->vdev_children >= zs->zs_mirrors);
2789420dfc95SChris Siden 		oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz];
27908ad4d6ddSJeff Bonwick 	}
2791420dfc95SChris Siden 	if (ztest_opts.zo_raidz > 1) {
27928ad4d6ddSJeff Bonwick 		ASSERT(oldvd->vdev_ops == &vdev_raidz_ops);
2793420dfc95SChris Siden 		ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz);
2794420dfc95SChris Siden 		oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz];
27958ad4d6ddSJeff Bonwick 	}
2796fa9e4066Sahrens 
2797fa9e4066Sahrens 	/*
279831157203SJeff Bonwick 	 * If we're already doing an attach or replace, oldvd may be a
279931157203SJeff Bonwick 	 * mirror vdev -- in which case, pick a random child.
2800fa9e4066Sahrens 	 */
280131157203SJeff Bonwick 	while (oldvd->vdev_children != 0) {
28029af0a4dfSJeff Bonwick 		oldvd_has_siblings = B_TRUE;
28038ad4d6ddSJeff Bonwick 		ASSERT(oldvd->vdev_children >= 2);
28048ad4d6ddSJeff Bonwick 		oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];
280531157203SJeff Bonwick 	}
2806fa9e4066Sahrens 
280731157203SJeff Bonwick 	oldguid = oldvd->vdev_guid;
2808573ca77eSGeorge Wilson 	oldsize = vdev_get_min_asize(oldvd);
280931157203SJeff Bonwick 	oldvd_is_log = oldvd->vdev_top->vdev_islog;
281031157203SJeff Bonwick 	(void) strcpy(oldpath, oldvd->vdev_path);
2811ea8dc4b6Seschrock 	pvd = oldvd->vdev_parent;
28128ad4d6ddSJeff Bonwick 	pguid = pvd->vdev_guid;
2813fa9e4066Sahrens 
28149af0a4dfSJeff Bonwick 	/*
28159af0a4dfSJeff Bonwick 	 * If oldvd has siblings, then half of the time, detach it.
28169af0a4dfSJeff Bonwick 	 */
28179af0a4dfSJeff Bonwick 	if (oldvd_has_siblings && ztest_random(2) == 0) {
28189af0a4dfSJeff Bonwick 		spa_config_exit(spa, SCL_VDEV, FTAG);
28198ad4d6ddSJeff Bonwick 		error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
28208ad4d6ddSJeff Bonwick 		if (error != 0 && error != ENODEV && error != EBUSY &&
28218ad4d6ddSJeff Bonwick 		    error != ENOTSUP)
28228ad4d6ddSJeff Bonwick 			fatal(0, "detach (%s) returned %d", oldpath, error);
2823420dfc95SChris Siden 		VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
28249af0a4dfSJeff Bonwick 		return;
28259af0a4dfSJeff Bonwick 	}
28269af0a4dfSJeff Bonwick 
2827fa9e4066Sahrens 	/*
282831157203SJeff Bonwick 	 * For the new vdev, choose with equal probability between the two
282931157203SJeff Bonwick 	 * standard paths (ending in either 'a' or 'b') or a random hot spare.
2830fa9e4066Sahrens 	 */
283131157203SJeff Bonwick 	if (sav->sav_count != 0 && ztest_random(3) == 0) {
283231157203SJeff Bonwick 		newvd = sav->sav_vdevs[ztest_random(sav->sav_count)];
283331157203SJeff Bonwick 		newvd_is_spare = B_TRUE;
283431157203SJeff Bonwick 		(void) strcpy(newpath, newvd->vdev_path);
283531157203SJeff Bonwick 	} else {
283631157203SJeff Bonwick 		(void) snprintf(newpath, sizeof (newpath), ztest_dev_template,
2837420dfc95SChris Siden 		    ztest_opts.zo_dir, ztest_opts.zo_pool,
2838420dfc95SChris Siden 		    top * leaves + leaf);
283931157203SJeff Bonwick 		if (ztest_random(2) == 0)
284031157203SJeff Bonwick 			newpath[strlen(newpath) - 1] = 'b';
284131157203SJeff Bonwick 		newvd = vdev_lookup_by_path(rvd, newpath);
284231157203SJeff Bonwick 	}
284331157203SJeff Bonwick 
284431157203SJeff Bonwick 	if (newvd) {
2845573ca77eSGeorge Wilson 		newsize = vdev_get_min_asize(newvd);
284631157203SJeff Bonwick 	} else {
284731157203SJeff Bonwick 		/*
284831157203SJeff Bonwick 		 * Make newsize a little bigger or smaller than oldsize.
284931157203SJeff Bonwick 		 * If it's smaller, the attach should fail.
285031157203SJeff Bonwick 		 * If it's larger, and we're doing a replace,
285131157203SJeff Bonwick 		 * we should get dynamic LUN growth when we're done.
285231157203SJeff Bonwick 		 */
285331157203SJeff Bonwick 		newsize = 10 * oldsize / (9 + ztest_random(3));
285431157203SJeff Bonwick 	}
2855fa9e4066Sahrens 
2856fa9e4066Sahrens 	/*
2857fa9e4066Sahrens 	 * If pvd is not a mirror or root, the attach should fail with ENOTSUP,
2858fa9e4066Sahrens 	 * unless it's a replace; in that case any non-replacing parent is OK.
2859fa9e4066Sahrens 	 *
2860ea8dc4b6Seschrock 	 * If newvd is already part of the pool, it should fail with EBUSY.
2861fa9e4066Sahrens 	 *
2862ea8dc4b6Seschrock 	 * If newvd is too small, it should fail with EOVERFLOW.
2863fa9e4066Sahrens 	 */
286431157203SJeff Bonwick 	if (pvd->vdev_ops != &vdev_mirror_ops &&
286531157203SJeff Bonwick 	    pvd->vdev_ops != &vdev_root_ops && (!replacing ||
286631157203SJeff Bonwick 	    pvd->vdev_ops == &vdev_replacing_ops ||
286731157203SJeff Bonwick 	    pvd->vdev_ops == &vdev_spare_ops))
286831157203SJeff Bonwick 		expected_error = ENOTSUP;
286931157203SJeff Bonwick 	else if (newvd_is_spare && (!replacing || oldvd_is_log))
2870fa9e4066Sahrens 		expected_error = ENOTSUP;
287131157203SJeff Bonwick 	else if (newvd == oldvd)
287231157203SJeff Bonwick 		expected_error = replacing ? 0 : EBUSY;
287331157203SJeff Bonwick 	else if (vdev_lookup_by_path(rvd, newpath) != NULL)
287431157203SJeff Bonwick 		expected_error = EBUSY;
2875ea8dc4b6Seschrock 	else if (newsize < oldsize)
2876fa9e4066Sahrens 		expected_error = EOVERFLOW;
2877ecc2d604Sbonwick 	else if (ashift > oldvd->vdev_top->vdev_ashift)
2878ecc2d604Sbonwick 		expected_error = EDOM;
2879fa9e4066Sahrens 	else
2880fa9e4066Sahrens 		expected_error = 0;
2881fa9e4066Sahrens 
2882e14bb325SJeff Bonwick 	spa_config_exit(spa, SCL_VDEV, FTAG);
2883fa9e4066Sahrens 
2884fa9e4066Sahrens 	/*
2885ea8dc4b6Seschrock 	 * Build the nvlist describing newpath.
2886fa9e4066Sahrens 	 */
288725345e46SGeorge Wilson 	root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0,
2888e14bb325SJeff Bonwick 	    ashift, 0, 0, 0, 1);
2889fa9e4066Sahrens 
289031157203SJeff Bonwick 	error = spa_vdev_attach(spa, oldguid, root, replacing);
2891fa9e4066Sahrens 
2892fa9e4066Sahrens 	nvlist_free(root);
2893fa9e4066Sahrens 
2894fa9e4066Sahrens 	/*
2895fa9e4066Sahrens 	 * If our parent was the replacing vdev, but the replace completed,
2896fa9e4066Sahrens 	 * then instead of failing with ENOTSUP we may either succeed,
2897fa9e4066Sahrens 	 * fail with ENODEV, or fail with EOVERFLOW.
2898fa9e4066Sahrens 	 */
2899fa9e4066Sahrens 	if (expected_error == ENOTSUP &&
2900fa9e4066Sahrens 	    (error == 0 || error == ENODEV || error == EOVERFLOW))
2901fa9e4066Sahrens 		expected_error = error;
2902fa9e4066Sahrens 
2903f0aa80d4Sbonwick 	/*
2904f0aa80d4Sbonwick 	 * If someone grew the LUN, the replacement may be too small.
2905f0aa80d4Sbonwick 	 */
2906088f3894Sahrens 	if (error == EOVERFLOW || error == EBUSY)
2907f0aa80d4Sbonwick 		expected_error = error;
2908f0aa80d4Sbonwick 
2909088f3894Sahrens 	/* XXX workaround 6690467 */
2910088f3894Sahrens 	if (error != expected_error && expected_error != EBUSY) {
2911088f3894Sahrens 		fatal(0, "attach (%s %llu, %s %llu, %d) "
2912088f3894Sahrens 		    "returned %d, expected %d",
2913b4952e17SGeorge Wilson 		    oldpath, oldsize, newpath,
2914b4952e17SGeorge Wilson 		    newsize, replacing, error, expected_error);
2915fa9e4066Sahrens 	}
2916fa9e4066Sahrens 
2917420dfc95SChris Siden 	VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2918fa9e4066Sahrens }
2919fa9e4066Sahrens 
2920573ca77eSGeorge Wilson /*
2921573ca77eSGeorge Wilson  * Callback function which expands the physical size of the vdev.
2922573ca77eSGeorge Wilson  */
2923573ca77eSGeorge Wilson vdev_t *
2924573ca77eSGeorge Wilson grow_vdev(vdev_t *vd, void *arg)
2925573ca77eSGeorge Wilson {
2926573ca77eSGeorge Wilson 	spa_t *spa = vd->vdev_spa;
2927573ca77eSGeorge Wilson 	size_t *newsize = arg;
2928573ca77eSGeorge Wilson 	size_t fsize;
2929573ca77eSGeorge Wilson 	int fd;
2930573ca77eSGeorge Wilson 
2931573ca77eSGeorge Wilson 	ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2932573ca77eSGeorge Wilson 	ASSERT(vd->vdev_ops->vdev_op_leaf);
2933573ca77eSGeorge Wilson 
2934573ca77eSGeorge Wilson 	if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
2935573ca77eSGeorge Wilson 		return (vd);
2936573ca77eSGeorge Wilson 
2937573ca77eSGeorge Wilson 	fsize = lseek(fd, 0, SEEK_END);
2938573ca77eSGeorge Wilson 	(void) ftruncate(fd, *newsize);
2939573ca77eSGeorge Wilson 
2940420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 6) {
2941573ca77eSGeorge Wilson 		(void) printf("%s grew from %lu to %lu bytes\n",
2942573ca77eSGeorge Wilson 		    vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
2943573ca77eSGeorge Wilson 	}
2944573ca77eSGeorge Wilson 	(void) close(fd);
2945573ca77eSGeorge Wilson 	return (NULL);
2946573ca77eSGeorge Wilson }
2947573ca77eSGeorge Wilson 
2948573ca77eSGeorge Wilson /*
2949573ca77eSGeorge Wilson  * Callback function which expands a given vdev by calling vdev_online().
2950573ca77eSGeorge Wilson  */
2951573ca77eSGeorge Wilson /* ARGSUSED */
2952573ca77eSGeorge Wilson vdev_t *
2953573ca77eSGeorge Wilson online_vdev(vdev_t *vd, void *arg)
2954573ca77eSGeorge Wilson {
2955573ca77eSGeorge Wilson 	spa_t *spa = vd->vdev_spa;
2956573ca77eSGeorge Wilson 	vdev_t *tvd = vd->vdev_top;
2957573ca77eSGeorge Wilson 	uint64_t guid = vd->vdev_guid;
29588f18d1faSGeorge Wilson 	uint64_t generation = spa->spa_config_generation + 1;
2959095bcd66SGeorge Wilson 	vdev_state_t newstate = VDEV_STATE_UNKNOWN;
2960095bcd66SGeorge Wilson 	int error;
2961573ca77eSGeorge Wilson 
2962573ca77eSGeorge Wilson 	ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2963573ca77eSGeorge Wilson 	ASSERT(vd->vdev_ops->vdev_op_leaf);
2964573ca77eSGeorge Wilson 
2965573ca77eSGeorge Wilson 	/* Calling vdev_online will initialize the new metaslabs */
2966573ca77eSGeorge Wilson 	spa_config_exit(spa, SCL_STATE, spa);
2967095bcd66SGeorge Wilson 	error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
2968573ca77eSGeorge Wilson 	spa_config_enter(spa, SCL_STATE, spa, RW_READER);
2969573ca77eSGeorge Wilson 
2970095bcd66SGeorge Wilson 	/*
2971095bcd66SGeorge Wilson 	 * If vdev_online returned an error or the underlying vdev_open
2972095bcd66SGeorge Wilson 	 * failed then we abort the expand. The only way to know that
2973095bcd66SGeorge Wilson 	 * vdev_open fails is by checking the returned newstate.
2974095bcd66SGeorge Wilson 	 */
2975095bcd66SGeorge Wilson 	if (error || newstate != VDEV_STATE_HEALTHY) {
2976420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 5) {
2977095bcd66SGeorge Wilson 			(void) printf("Unable to expand vdev, state %llu, "
2978095bcd66SGeorge Wilson 			    "error %d\n", (u_longlong_t)newstate, error);
2979095bcd66SGeorge Wilson 		}
2980095bcd66SGeorge Wilson 		return (vd);
2981095bcd66SGeorge Wilson 	}
2982095bcd66SGeorge Wilson 	ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
2983095bcd66SGeorge Wilson 
2984573ca77eSGeorge Wilson 	/*
2985573ca77eSGeorge Wilson 	 * Since we dropped the lock we need to ensure that we're
2986573ca77eSGeorge Wilson 	 * still talking to the original vdev. It's possible this
2987573ca77eSGeorge Wilson 	 * vdev may have been detached/replaced while we were
2988573ca77eSGeorge Wilson 	 * trying to online it.
2989573ca77eSGeorge Wilson 	 */
29908f18d1faSGeorge Wilson 	if (generation != spa->spa_config_generation) {
2991420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 5) {
29928f18d1faSGeorge Wilson 			(void) printf("vdev configuration has changed, "
29938f18d1faSGeorge Wilson 			    "guid %llu, state %llu, expected gen %llu, "
2994b24ab676SJeff Bonwick 			    "got gen %llu\n",
2995b24ab676SJeff Bonwick 			    (u_longlong_t)guid,
29968f18d1faSGeorge Wilson 			    (u_longlong_t)tvd->vdev_state,
29978f18d1faSGeorge Wilson 			    (u_longlong_t)generation,
29988f18d1faSGeorge Wilson 			    (u_longlong_t)spa->spa_config_generation);
2999573ca77eSGeorge Wilson 		}
3000573ca77eSGeorge Wilson 		return (vd);
3001573ca77eSGeorge Wilson 	}
3002573ca77eSGeorge Wilson 	return (NULL);
3003573ca77eSGeorge Wilson }
3004573ca77eSGeorge Wilson 
3005573ca77eSGeorge Wilson /*
3006573ca77eSGeorge Wilson  * Traverse the vdev tree calling the supplied function.
3007573ca77eSGeorge Wilson  * We continue to walk the tree until we either have walked all
3008573ca77eSGeorge Wilson  * children or we receive a non-NULL return from the callback.
3009573ca77eSGeorge Wilson  * If a NULL callback is passed, then we just return back the first
3010573ca77eSGeorge Wilson  * leaf vdev we encounter.
3011573ca77eSGeorge Wilson  */
3012573ca77eSGeorge Wilson vdev_t *
3013573ca77eSGeorge Wilson vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
3014573ca77eSGeorge Wilson {
3015573ca77eSGeorge Wilson 	if (vd->vdev_ops->vdev_op_leaf) {
3016573ca77eSGeorge Wilson 		if (func == NULL)
3017573ca77eSGeorge Wilson 			return (vd);
3018573ca77eSGeorge Wilson 		else
3019573ca77eSGeorge Wilson 			return (func(vd, arg));
3020573ca77eSGeorge Wilson 	}
3021573ca77eSGeorge Wilson 
3022573ca77eSGeorge Wilson 	for (uint_t c = 0; c < vd->vdev_children; c++) {
3023573ca77eSGeorge Wilson 		vdev_t *cvd = vd->vdev_child[c];
3024573ca77eSGeorge Wilson 		if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
3025573ca77eSGeorge Wilson 			return (cvd);
3026573ca77eSGeorge Wilson 	}
3027573ca77eSGeorge Wilson 	return (NULL);
3028573ca77eSGeorge Wilson }
3029573ca77eSGeorge Wilson 
3030fa9e4066Sahrens /*
3031fa9e4066Sahrens  * Verify that dynamic LUN growth works as expected.
3032fa9e4066Sahrens  */
3033b24ab676SJeff Bonwick /* ARGSUSED */
3034fa9e4066Sahrens void
3035b24ab676SJeff Bonwick ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
3036fa9e4066Sahrens {
3037420dfc95SChris Siden 	spa_t *spa = ztest_spa;
3038b24ab676SJeff Bonwick 	vdev_t *vd, *tvd;
3039b24ab676SJeff Bonwick 	metaslab_class_t *mc;
3040b24ab676SJeff Bonwick 	metaslab_group_t *mg;
3041573ca77eSGeorge Wilson 	size_t psize, newsize;
3042b24ab676SJeff Bonwick 	uint64_t top;
3043b24ab676SJeff Bonwick 	uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
3044fa9e4066Sahrens 
3045420dfc95SChris Siden 	VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
3046573ca77eSGeorge Wilson 	spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3047573ca77eSGeorge Wilson 
3048b24ab676SJeff Bonwick 	top = ztest_random_vdev_top(spa, B_TRUE);
3049573ca77eSGeorge Wilson 
3050b24ab676SJeff Bonwick 	tvd = spa->spa_root_vdev->vdev_child[top];
3051b24ab676SJeff Bonwick 	mg = tvd->vdev_mg;
3052b24ab676SJeff Bonwick 	mc = mg->mg_class;
3053b24ab676SJeff Bonwick 	old_ms_count = tvd->vdev_ms_count;
3054b24ab676SJeff Bonwick 	old_class_space = metaslab_class_get_space(mc);
3055fa9e4066Sahrens 
3056fa9e4066Sahrens 	/*
3057573ca77eSGeorge Wilson 	 * Determine the size of the first leaf vdev associated with
3058573ca77eSGeorge Wilson 	 * our top-level device.
3059fa9e4066Sahrens 	 */
3060573ca77eSGeorge Wilson 	vd = vdev_walk_tree(tvd, NULL, NULL);
3061573ca77eSGeorge Wilson 	ASSERT3P(vd, !=, NULL);
3062573ca77eSGeorge Wilson 	ASSERT(vd->vdev_ops->vdev_op_leaf);
3063fa9e4066Sahrens 
3064573ca77eSGeorge Wilson 	psize = vd->vdev_psize;
3065fa9e4066Sahrens 
3066573ca77eSGeorge Wilson 	/*
30678f18d1faSGeorge Wilson 	 * We only try to expand the vdev if it's healthy, less than 4x its
30688f18d1faSGeorge Wilson 	 * original size, and it has a valid psize.
3069573ca77eSGeorge Wilson 	 */
30708f18d1faSGeorge Wilson 	if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
3071420dfc95SChris Siden 	    psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) {
3072573ca77eSGeorge Wilson 		spa_config_exit(spa, SCL_STATE, spa);
3073420dfc95SChris Siden 		VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3074573ca77eSGeorge Wilson 		return;
3075573ca77eSGeorge Wilson 	}
3076573ca77eSGeorge Wilson 	ASSERT(psize > 0);
3077573ca77eSGeorge Wilson 	newsize = psize + psize / 8;
3078573ca77eSGeorge Wilson 	ASSERT3U(newsize, >, psize);
3079fa9e4066Sahrens 
3080420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 6) {
3081b24ab676SJeff Bonwick 		(void) printf("Expanding LUN %s from %lu to %lu\n",
3082573ca77eSGeorge Wilson 		    vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
3083573ca77eSGeorge Wilson 	}
3084573ca77eSGeorge Wilson 
3085573ca77eSGeorge Wilson 	/*
3086573ca77eSGeorge Wilson 	 * Growing the vdev is a two step process:
3087573ca77eSGeorge Wilson 	 *	1). expand the physical size (i.e. relabel)
3088573ca77eSGeorge Wilson 	 *	2). online the vdev to create the new metaslabs
3089573ca77eSGeorge Wilson 	 */
3090573ca77eSGeorge Wilson 	if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
3091573ca77eSGeorge Wilson 	    vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
3092573ca77eSGeorge Wilson 	    tvd->vdev_state != VDEV_STATE_HEALTHY) {
3093420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 5) {
3094b24ab676SJeff Bonwick 			(void) printf("Could not expand LUN because "
3095b24ab676SJeff Bonwick 			    "the vdev configuration changed.\n");
3096b24ab676SJeff Bonwick 		}
3097b24ab676SJeff Bonwick 		spa_config_exit(spa, SCL_STATE, spa);
3098420dfc95SChris Siden 		VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3099b24ab676SJeff Bonwick 		return;
3100b24ab676SJeff Bonwick 	}
3101b24ab676SJeff Bonwick 
3102b24ab676SJeff Bonwick 	spa_config_exit(spa, SCL_STATE, spa);
3103b24ab676SJeff Bonwick 
3104b24ab676SJeff Bonwick 	/*
3105b24ab676SJeff Bonwick 	 * Expanding the LUN will update the config asynchronously,
3106b24ab676SJeff Bonwick 	 * thus we must wait for the async thread to complete any
3107b24ab676SJeff Bonwick 	 * pending tasks before proceeding.
3108b24ab676SJeff Bonwick 	 */
3109b24ab676SJeff Bonwick 	for (;;) {
3110b24ab676SJeff Bonwick 		boolean_t done;
3111b24ab676SJeff Bonwick 		mutex_enter(&spa->spa_async_lock);
3112b24ab676SJeff Bonwick 		done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
3113b24ab676SJeff Bonwick 		mutex_exit(&spa->spa_async_lock);
3114b24ab676SJeff Bonwick 		if (done)
3115b24ab676SJeff Bonwick 			break;
3116b24ab676SJeff Bonwick 		txg_wait_synced(spa_get_dsl(spa), 0);
3117b24ab676SJeff Bonwick 		(void) poll(NULL, 0, 100);
3118b24ab676SJeff Bonwick 	}
3119b24ab676SJeff Bonwick 
3120b24ab676SJeff Bonwick 	spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3121b24ab676SJeff Bonwick 
3122b24ab676SJeff Bonwick 	tvd = spa->spa_root_vdev->vdev_child[top];
3123b24ab676SJeff Bonwick 	new_ms_count = tvd->vdev_ms_count;
3124b24ab676SJeff Bonwick 	new_class_space = metaslab_class_get_space(mc);
3125b24ab676SJeff Bonwick 
3126b24ab676SJeff Bonwick 	if (tvd->vdev_mg != mg || mg->mg_class != mc) {
3127420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 5) {
3128b24ab676SJeff Bonwick 			(void) printf("Could not verify LUN expansion due to "
3129b24ab676SJeff Bonwick 			    "intervening vdev offline or remove.\n");
3130fa9e4066Sahrens 		}
3131b24ab676SJeff Bonwick 		spa_config_exit(spa, SCL_STATE, spa);
3132420dfc95SChris Siden 		VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3133573ca77eSGeorge Wilson 		return;
3134fa9e4066Sahrens 	}
3135fa9e4066Sahrens 
3136573ca77eSGeorge Wilson 	/*
3137b24ab676SJeff Bonwick 	 * Make sure we were able to grow the vdev.
3138573ca77eSGeorge Wilson 	 */
3139b24ab676SJeff Bonwick 	if (new_ms_count <= old_ms_count)
3140b24ab676SJeff Bonwick 		fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n",
3141b24ab676SJeff Bonwick 		    old_ms_count, new_ms_count);
3142573ca77eSGeorge Wilson 
3143573ca77eSGeorge Wilson 	/*
3144573ca77eSGeorge Wilson 	 * Make sure we were able to grow the pool.
3145573ca77eSGeorge Wilson 	 */
3146b24ab676SJeff Bonwick 	if (new_class_space <= old_class_space)
3147b24ab676SJeff Bonwick 		fatal(0, "LUN expansion failed: class_space %llu <= %llu\n",
3148b24ab676SJeff Bonwick 		    old_class_space, new_class_space);
3149b24ab676SJeff Bonwick 
3150420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 5) {
3151573ca77eSGeorge Wilson 		char oldnumbuf[6], newnumbuf[6];
3152573ca77eSGeorge Wilson 
3153b24ab676SJeff Bonwick 		nicenum(old_class_space, oldnumbuf);
3154b24ab676SJeff Bonwick 		nicenum(new_class_space, newnumbuf);
3155573ca77eSGeorge Wilson 		(void) printf("%s grew from %s to %s\n",
3156573ca77eSGeorge Wilson 		    spa->spa_name, oldnumbuf, newnumbuf);
3157573ca77eSGeorge Wilson 	}
3158b24ab676SJeff Bonwick 
3159573ca77eSGeorge Wilson 	spa_config_exit(spa, SCL_STATE, spa);
3160420dfc95SChris Siden 	VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3161fa9e4066Sahrens }
3162fa9e4066Sahrens 
3163b24ab676SJeff Bonwick /*
3164b24ab676SJeff Bonwick  * Verify that dmu_objset_{create,destroy,open,close} work as expected.
3165b24ab676SJeff Bonwick  */
3166fa9e4066Sahrens /* ARGSUSED */
3167fa9e4066Sahrens static void
3168b24ab676SJeff Bonwick ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
3169fa9e4066Sahrens {
3170fa9e4066Sahrens 	/*
3171b24ab676SJeff Bonwick 	 * Create the objects common to all ztest datasets.
3172fa9e4066Sahrens 	 */
3173b24ab676SJeff Bonwick 	VERIFY(zap_create_claim(os, ZTEST_DIROBJ,
3174fa9e4066Sahrens 	    DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0);
3175fa9e4066Sahrens }
3176fa9e4066Sahrens 
317755da60b9SMark J Musante static int
317855da60b9SMark J Musante ztest_dataset_create(char *dsname)
317955da60b9SMark J Musante {
318055da60b9SMark J Musante 	uint64_t zilset = ztest_random(100);
318155da60b9SMark J Musante 	int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0,
318255da60b9SMark J Musante 	    ztest_objset_create_cb, NULL);
318355da60b9SMark J Musante 
318455da60b9SMark J Musante 	if (err || zilset < 80)
318555da60b9SMark J Musante 		return (err);
318655da60b9SMark J Musante 
3187420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 6)
3188420dfc95SChris Siden 		(void) printf("Setting dataset %s to sync always\n", dsname);
318955da60b9SMark J Musante 	return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
319055da60b9SMark J Musante 	    ZFS_SYNC_ALWAYS, B_FALSE));
319155da60b9SMark J Musante }
319255da60b9SMark J Musante 
3193b24ab676SJeff Bonwick /* ARGSUSED */
31941d452cf5Sahrens static int
3195fd136879SMatthew Ahrens ztest_objset_destroy_cb(const char *name, void *arg)
3196fa9e4066Sahrens {
3197fa9e4066Sahrens 	objset_t *os;
3198b24ab676SJeff Bonwick 	dmu_object_info_t doi;
3199fa9e4066Sahrens 	int error;
3200fa9e4066Sahrens 
3201fa9e4066Sahrens 	/*
3202fa9e4066Sahrens 	 * Verify that the dataset contains a directory object.
3203fa9e4066Sahrens 	 */
32043b2aab18SMatthew Ahrens 	VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os));
3205b24ab676SJeff Bonwick 	error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
3206e1930233Sbonwick 	if (error != ENOENT) {
3207e1930233Sbonwick 		/* We could have crashed in the middle of destroying it */
3208fb09f5aaSMadhav Suresh 		ASSERT0(error);
3209b24ab676SJeff Bonwick 		ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
3210b24ab676SJeff Bonwick 		ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
3211e1930233Sbonwick 	}
32123b2aab18SMatthew Ahrens 	dmu_objset_disown(os, FTAG);
3213fa9e4066Sahrens 
3214fa9e4066Sahrens 	/*
3215fa9e4066Sahrens 	 * Destroy the dataset.
3216fa9e4066Sahrens 	 */
32173b2aab18SMatthew Ahrens 	if (strchr(name, '@') != NULL) {
32183b2aab18SMatthew Ahrens 		VERIFY0(dsl_destroy_snapshot(name, B_FALSE));
32193b2aab18SMatthew Ahrens 	} else {
32203b2aab18SMatthew Ahrens 		VERIFY0(dsl_destroy_head(name));
32213b2aab18SMatthew Ahrens 	}
32221d452cf5Sahrens 	return (0);
3223fa9e4066Sahrens }
3224fa9e4066Sahrens 
3225b24ab676SJeff Bonwick static boolean_t
3226b24ab676SJeff Bonwick ztest_snapshot_create(char *osname, uint64_t id)
3227fa9e4066Sahrens {
3228b24ab676SJeff Bonwick 	char snapname[MAXNAMELEN];
3229b24ab676SJeff Bonwick 	int error;
3230b24ab676SJeff Bonwick 
32313b2aab18SMatthew Ahrens 	(void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id);
3232b24ab676SJeff Bonwick 
32333b2aab18SMatthew Ahrens 	error = dmu_objset_snapshot_one(osname, snapname);
3234b24ab676SJeff Bonwick 	if (error == ENOSPC) {
3235b24ab676SJeff Bonwick 		ztest_record_enospc(FTAG);
3236b24ab676SJeff Bonwick 		return (B_FALSE);
3237b24ab676SJeff Bonwick 	}
32383b2aab18SMatthew Ahrens 	if (error != 0 && error != EEXIST) {
32393b2aab18SMatthew Ahrens 		fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname,
32403b2aab18SMatthew Ahrens 		    snapname, error);
32413b2aab18SMatthew Ahrens 	}
3242b24ab676SJeff Bonwick 	return (B_TRUE);
3243b24ab676SJeff Bonwick }
3244b24ab676SJeff Bonwick 
3245b24ab676SJeff Bonwick static boolean_t
3246b24ab676SJeff Bonwick ztest_snapshot_destroy(char *osname, uint64_t id)
3247b24ab676SJeff Bonwick {
3248b24ab676SJeff Bonwick 	char snapname[MAXNAMELEN];
3249b24ab676SJeff Bonwick 	int error;
3250b24ab676SJeff Bonwick 
3251b24ab676SJeff Bonwick 	(void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname,
3252b24ab676SJeff Bonwick 	    (u_longlong_t)id);
3253b24ab676SJeff Bonwick 
32543b2aab18SMatthew Ahrens 	error = dsl_destroy_snapshot(snapname, B_FALSE);
3255b24ab676SJeff Bonwick 	if (error != 0 && error != ENOENT)
3256b24ab676SJeff Bonwick 		fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error);
3257b24ab676SJeff Bonwick 	return (B_TRUE);
3258fa9e4066Sahrens }
3259fa9e4066Sahrens 
3260b24ab676SJeff Bonwick /* ARGSUSED */
3261fa9e4066Sahrens void
3262b24ab676SJeff Bonwick ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
3263fa9e4066Sahrens {
3264b24ab676SJeff Bonwick 	ztest_ds_t zdtmp;
3265b24ab676SJeff Bonwick 	int iters;
3266fa9e4066Sahrens 	int error;
3267745cd3c5Smaybee 	objset_t *os, *os2;
3268b24ab676SJeff Bonwick 	char name[MAXNAMELEN];
3269fa9e4066Sahrens 	zilog_t *zilog;
3270fa9e4066Sahrens 
3271420dfc95SChris Siden 	(void) rw_rdlock(&ztest_name_lock);
3272b24ab676SJeff Bonwick 
3273b24ab676SJeff Bonwick 	(void) snprintf(name, MAXNAMELEN, "%s/temp_%llu",
3274420dfc95SChris Siden 	    ztest_opts.zo_pool, (u_longlong_t)id);
3275fa9e4066Sahrens 
3276fa9e4066Sahrens 	/*
3277fa9e4066Sahrens 	 * If this dataset exists from a previous run, process its replay log
3278fa9e4066Sahrens 	 * half of the time.  If we don't replay it, then dmu_objset_destroy()
3279b24ab676SJeff Bonwick 	 * (invoked from ztest_objset_destroy_cb()) should just throw it away.
3280fa9e4066Sahrens 	 */
3281fa9e4066Sahrens 	if (ztest_random(2) == 0 &&
3282503ad85cSMatthew Ahrens 	    dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) {
3283420dfc95SChris Siden 		ztest_zd_init(&zdtmp, NULL, os);
3284b24ab676SJeff Bonwick 		zil_replay(os, &zdtmp, ztest_replay_vector);
3285b24ab676SJeff Bonwick 		ztest_zd_fini(&zdtmp);
3286503ad85cSMatthew Ahrens 		dmu_objset_disown(os, FTAG);
3287fa9e4066Sahrens 	}
3288fa9e4066Sahrens 
3289fa9e4066Sahrens 	/*
3290fa9e4066Sahrens 	 * There may be an old instance of the dataset we're about to
3291fa9e4066Sahrens 	 * create lying around from a previous run.  If so, destroy it
3292fa9e4066Sahrens 	 * and all of its snapshots.
3293fa9e4066Sahrens 	 */
3294b24ab676SJeff Bonwick 	(void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
32950b69c2f0Sahrens 	    DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
3296fa9e4066Sahrens 
3297fa9e4066Sahrens 	/*
3298fa9e4066Sahrens 	 * Verify that the destroyed dataset is no longer in the namespace.
3299fa9e4066Sahrens 	 */
33003b2aab18SMatthew Ahrens 	VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
33013b2aab18SMatthew Ahrens 	    FTAG, &os));
3302fa9e4066Sahrens 
3303fa9e4066Sahrens 	/*
3304fa9e4066Sahrens 	 * Verify that we can create a new dataset.
3305fa9e4066Sahrens 	 */
330655da60b9SMark J Musante 	error = ztest_dataset_create(name);
3307fa9e4066Sahrens 	if (error) {
3308fa9e4066Sahrens 		if (error == ENOSPC) {
3309b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3310420dfc95SChris Siden 			(void) rw_unlock(&ztest_name_lock);
3311fa9e4066Sahrens 			return;
3312fa9e4066Sahrens 		}
3313fa9e4066Sahrens 		fatal(0, "dmu_objset_create(%s) = %d", name, error);
3314fa9e4066Sahrens 	}
3315fa9e4066Sahrens 
33163b2aab18SMatthew Ahrens 	VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os));
3317b24ab676SJeff Bonwick 
3318420dfc95SChris Siden 	ztest_zd_init(&zdtmp, NULL, os);
3319fa9e4066Sahrens 
3320fa9e4066Sahrens 	/*
3321fa9e4066Sahrens 	 * Open the intent log for it.
3322fa9e4066Sahrens 	 */
3323b24ab676SJeff Bonwick 	zilog = zil_open(os, ztest_get_data);
3324fa9e4066Sahrens 
3325fa9e4066Sahrens 	/*
3326b24ab676SJeff Bonwick 	 * Put some objects in there, do a little I/O to them,
3327b24ab676SJeff Bonwick 	 * and randomly take a couple of snapshots along the way.
3328fa9e4066Sahrens 	 */
3329b24ab676SJeff Bonwick 	iters = ztest_random(5);
3330b24ab676SJeff Bonwick 	for (int i = 0; i < iters; i++) {
3331b24ab676SJeff Bonwick 		ztest_dmu_object_alloc_free(&zdtmp, id);
3332b24ab676SJeff Bonwick 		if (ztest_random(iters) == 0)
3333b24ab676SJeff Bonwick 			(void) ztest_snapshot_create(name, i);
3334fa9e4066Sahrens 	}
3335fa9e4066Sahrens 
3336fa9e4066Sahrens 	/*
3337fa9e4066Sahrens 	 * Verify that we cannot create an existing dataset.
3338fa9e4066Sahrens 	 */
3339b24ab676SJeff Bonwick 	VERIFY3U(EEXIST, ==,
3340b24ab676SJeff Bonwick 	    dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL));
3341fa9e4066Sahrens 
3342fa9e4066Sahrens 	/*
3343503ad85cSMatthew Ahrens 	 * Verify that we can hold an objset that is also owned.
3344745cd3c5Smaybee 	 */
3345b420f3adSRichard Lowe 	VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2));
3346503ad85cSMatthew Ahrens 	dmu_objset_rele(os2, FTAG);
3347503ad85cSMatthew Ahrens 
3348503ad85cSMatthew Ahrens 	/*
3349b24ab676SJeff Bonwick 	 * Verify that we cannot own an objset that is already owned.
3350503ad85cSMatthew Ahrens 	 */
3351b24ab676SJeff Bonwick 	VERIFY3U(EBUSY, ==,
3352b24ab676SJeff Bonwick 	    dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2));
3353fa9e4066Sahrens 
3354fa9e4066Sahrens 	zil_close(zilog);
3355503ad85cSMatthew Ahrens 	dmu_objset_disown(os, FTAG);
3356b24ab676SJeff Bonwick 	ztest_zd_fini(&zdtmp);
3357fa9e4066Sahrens 
3358420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
3359fa9e4066Sahrens }
3360fa9e4066Sahrens 
3361fa9e4066Sahrens /*
3362fa9e4066Sahrens  * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
3363fa9e4066Sahrens  */
3364fa9e4066Sahrens void
3365b24ab676SJeff Bonwick ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
3366fa9e4066Sahrens {
3367420dfc95SChris Siden 	(void) rw_rdlock(&ztest_name_lock);
3368b24ab676SJeff Bonwick 	(void) ztest_snapshot_destroy(zd->zd_name, id);
3369b24ab676SJeff Bonwick 	(void) ztest_snapshot_create(zd->zd_name, id);
3370420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
33714f5064b7SMark J Musante }
33724f5064b7SMark J Musante 
3373718d718aSGeorge Wilson /*
3374718d718aSGeorge Wilson  * Cleanup non-standard snapshots and clones.
3375718d718aSGeorge Wilson  */
3376718d718aSGeorge Wilson void
3377b24ab676SJeff Bonwick ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
3378718d718aSGeorge Wilson {
3379b24ab676SJeff Bonwick 	char snap1name[MAXNAMELEN];
3380b24ab676SJeff Bonwick 	char clone1name[MAXNAMELEN];
3381b24ab676SJeff Bonwick 	char snap2name[MAXNAMELEN];
3382b24ab676SJeff Bonwick 	char clone2name[MAXNAMELEN];
3383b24ab676SJeff Bonwick 	char snap3name[MAXNAMELEN];
3384718d718aSGeorge Wilson 	int error;
3385718d718aSGeorge Wilson 
3386b24ab676SJeff Bonwick 	(void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3387b24ab676SJeff Bonwick 	(void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3388b24ab676SJeff Bonwick 	(void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3389b24ab676SJeff Bonwick 	(void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3390b24ab676SJeff Bonwick 	(void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
3391718d718aSGeorge Wilson 
33923b2aab18SMatthew Ahrens 	error = dsl_destroy_head(clone2name);
3393718d718aSGeorge Wilson 	if (error && error != ENOENT)
33943b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error);
33953b2aab18SMatthew Ahrens 	error = dsl_destroy_snapshot(snap3name, B_FALSE);
3396718d718aSGeorge Wilson 	if (error && error != ENOENT)
33973b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error);
33983b2aab18SMatthew Ahrens 	error = dsl_destroy_snapshot(snap2name, B_FALSE);
3399718d718aSGeorge Wilson 	if (error && error != ENOENT)
34003b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error);
34013b2aab18SMatthew Ahrens 	error = dsl_destroy_head(clone1name);
3402718d718aSGeorge Wilson 	if (error && error != ENOENT)
34033b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error);
34043b2aab18SMatthew Ahrens 	error = dsl_destroy_snapshot(snap1name, B_FALSE);
3405718d718aSGeorge Wilson 	if (error && error != ENOENT)
34063b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error);
3407718d718aSGeorge Wilson }
3408718d718aSGeorge Wilson 
34094f5064b7SMark J Musante /*
34104f5064b7SMark J Musante  * Verify dsl_dataset_promote handles EBUSY
34114f5064b7SMark J Musante  */
34124f5064b7SMark J Musante void
3413b24ab676SJeff Bonwick ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
34144f5064b7SMark J Musante {
34153b2aab18SMatthew Ahrens 	objset_t *os;
3416b24ab676SJeff Bonwick 	char snap1name[MAXNAMELEN];
3417b24ab676SJeff Bonwick 	char clone1name[MAXNAMELEN];
3418b24ab676SJeff Bonwick 	char snap2name[MAXNAMELEN];
3419b24ab676SJeff Bonwick 	char clone2name[MAXNAMELEN];
3420b24ab676SJeff Bonwick 	char snap3name[MAXNAMELEN];
3421b24ab676SJeff Bonwick 	char *osname = zd->zd_name;
3422b24ab676SJeff Bonwick 	int error;
34234f5064b7SMark J Musante 
3424420dfc95SChris Siden 	(void) rw_rdlock(&ztest_name_lock);
34254f5064b7SMark J Musante 
3426b24ab676SJeff Bonwick 	ztest_dsl_dataset_cleanup(osname, id);
3427718d718aSGeorge Wilson 
3428b24ab676SJeff Bonwick 	(void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3429b24ab676SJeff Bonwick 	(void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3430b24ab676SJeff Bonwick 	(void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3431b24ab676SJeff Bonwick 	(void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3432b24ab676SJeff Bonwick 	(void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
343305312e2cSMark J Musante 
34344445fffbSMatthew Ahrens 	error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
3435b2d22b66SGeorge Wilson 	if (error && error != EEXIST) {
3436b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3437b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3438b2d22b66SGeorge Wilson 			goto out;
3439b2d22b66SGeorge Wilson 		}
3440b2d22b66SGeorge Wilson 		fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error);
3441b2d22b66SGeorge Wilson 	}
34424f5064b7SMark J Musante 
34433b2aab18SMatthew Ahrens 	error = dmu_objset_clone(clone1name, snap1name);
3444b2d22b66SGeorge Wilson 	if (error) {
3445b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3446b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3447b2d22b66SGeorge Wilson 			goto out;
3448b2d22b66SGeorge Wilson 		}
3449b2d22b66SGeorge Wilson 		fatal(0, "dmu_objset_create(%s) = %d", clone1name, error);
3450b2d22b66SGeorge Wilson 	}
34514f5064b7SMark J Musante 
34524445fffbSMatthew Ahrens 	error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
3453b2d22b66SGeorge Wilson 	if (error && error != EEXIST) {
3454b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3455b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3456b2d22b66SGeorge Wilson 			goto out;
3457b2d22b66SGeorge Wilson 		}
3458b2d22b66SGeorge Wilson 		fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error);
3459b2d22b66SGeorge Wilson 	}
34604f5064b7SMark J Musante 
34614445fffbSMatthew Ahrens 	error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
3462b2d22b66SGeorge Wilson 	if (error && error != EEXIST) {
3463b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3464b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3465b2d22b66SGeorge Wilson 			goto out;
3466b2d22b66SGeorge Wilson 		}
3467b2d22b66SGeorge Wilson 		fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error);
3468b2d22b66SGeorge Wilson 	}
34694f5064b7SMark J Musante 
34703b2aab18SMatthew Ahrens 	error = dmu_objset_clone(clone2name, snap3name);
3471b2d22b66SGeorge Wilson 	if (error) {
3472b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3473b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3474b2d22b66SGeorge Wilson 			goto out;
3475b2d22b66SGeorge Wilson 		}
3476b2d22b66SGeorge Wilson 		fatal(0, "dmu_objset_create(%s) = %d", clone2name, error);
3477b2d22b66SGeorge Wilson 	}
34784f5064b7SMark J Musante 
34793b2aab18SMatthew Ahrens 	error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os);
34804f5064b7SMark J Musante 	if (error)
34813b2aab18SMatthew Ahrens 		fatal(0, "dmu_objset_own(%s) = %d", snap2name, error);
3482681d9761SEric Taylor 	error = dsl_dataset_promote(clone2name, NULL);
34835d7b4d43SMatthew Ahrens 	if (error == ENOSPC) {
34845d7b4d43SMatthew Ahrens 		dmu_objset_disown(os, FTAG);
34855d7b4d43SMatthew Ahrens 		ztest_record_enospc(FTAG);
34865d7b4d43SMatthew Ahrens 		goto out;
34875d7b4d43SMatthew Ahrens 	}
34884f5064b7SMark J Musante 	if (error != EBUSY)
34894f5064b7SMark J Musante 		fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name,
34904f5064b7SMark J Musante 		    error);
34913b2aab18SMatthew Ahrens 	dmu_objset_disown(os, FTAG);
34924f5064b7SMark J Musante 
3493b2d22b66SGeorge Wilson out:
3494b24ab676SJeff Bonwick 	ztest_dsl_dataset_cleanup(osname, id);
34954f5064b7SMark J Musante 
3496420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
3497fa9e4066Sahrens }
3498fa9e4066Sahrens 
3499fa9e4066Sahrens /*
3500fa9e4066Sahrens  * Verify that dmu_object_{alloc,free} work as expected.
3501fa9e4066Sahrens  */
3502fa9e4066Sahrens void
3503b24ab676SJeff Bonwick ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
3504fa9e4066Sahrens {
3505b24ab676SJeff Bonwick 	ztest_od_t od[4];
3506b24ab676SJeff Bonwick 	int batchsize = sizeof (od) / sizeof (od[0]);
3507fa9e4066Sahrens 
3508b24ab676SJeff Bonwick 	for (int b = 0; b < batchsize; b++)
3509b24ab676SJeff Bonwick 		ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0);
3510fa9e4066Sahrens 
3511fa9e4066Sahrens 	/*
3512b24ab676SJeff Bonwick 	 * Destroy the previous batch of objects, create a new batch,
3513b24ab676SJeff Bonwick 	 * and do some I/O on the new objects.
3514fa9e4066Sahrens 	 */
3515b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0)
3516b24ab676SJeff Bonwick 		return;
3517fa9e4066Sahrens 
3518b24ab676SJeff Bonwick 	while (ztest_random(4 * batchsize) != 0)
3519b24ab676SJeff Bonwick 		ztest_io(zd, od[ztest_random(batchsize)].od_object,
3520b24ab676SJeff Bonwick 		    ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
3521fa9e4066Sahrens }
3522fa9e4066Sahrens 
3523fa9e4066Sahrens /*
3524fa9e4066Sahrens  * Verify that dmu_{read,write} work as expected.
3525fa9e4066Sahrens  */
3526fa9e4066Sahrens void
3527b24ab676SJeff Bonwick ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
3528fa9e4066Sahrens {
3529b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
3530b24ab676SJeff Bonwick 	ztest_od_t od[2];
3531fa9e4066Sahrens 	dmu_tx_t *tx;
3532fa9e4066Sahrens 	int i, freeit, error;
3533fa9e4066Sahrens 	uint64_t n, s, txg;
3534fa9e4066Sahrens 	bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
3535b24ab676SJeff Bonwick 	uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3536b24ab676SJeff Bonwick 	uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
3537fa9e4066Sahrens 	uint64_t regions = 997;
3538fa9e4066Sahrens 	uint64_t stride = 123456789ULL;
3539fa9e4066Sahrens 	uint64_t width = 40;
3540fa9e4066Sahrens 	int free_percent = 5;
3541fa9e4066Sahrens 
3542fa9e4066Sahrens 	/*
3543fa9e4066Sahrens 	 * This test uses two objects, packobj and bigobj, that are always
3544fa9e4066Sahrens 	 * updated together (i.e. in the same tx) so that their contents are
3545fa9e4066Sahrens 	 * in sync and can be compared.  Their contents relate to each other
3546fa9e4066Sahrens 	 * in a simple way: packobj is a dense array of 'bufwad' structures,
3547fa9e4066Sahrens 	 * while bigobj is a sparse array of the same bufwads.  Specifically,
3548fa9e4066Sahrens 	 * for any index n, there are three bufwads that should be identical:
3549fa9e4066Sahrens 	 *
3550fa9e4066Sahrens 	 *	packobj, at offset n * sizeof (bufwad_t)
3551fa9e4066Sahrens 	 *	bigobj, at the head of the nth chunk
3552fa9e4066Sahrens 	 *	bigobj, at the tail of the nth chunk
3553fa9e4066Sahrens 	 *
3554fa9e4066Sahrens 	 * The chunk size is arbitrary. It doesn't have to be a power of two,
3555fa9e4066Sahrens 	 * and it doesn't have any relation to the object blocksize.
3556fa9e4066Sahrens 	 * The only requirement is that it can hold at least two bufwads.
3557fa9e4066Sahrens 	 *
3558fa9e4066Sahrens 	 * Normally, we write the bufwad to each of these locations.
3559fa9e4066Sahrens 	 * However, free_percent of the time we instead write zeroes to
3560fa9e4066Sahrens 	 * packobj and perform a dmu_free_range() on bigobj.  By comparing
3561fa9e4066Sahrens 	 * bigobj to packobj, we can verify that the DMU is correctly
3562fa9e4066Sahrens 	 * tracking which parts of an object are allocated and free,
3563fa9e4066Sahrens 	 * and that the contents of the allocated blocks are correct.
3564fa9e4066Sahrens 	 */
3565fa9e4066Sahrens 
3566fa9e4066Sahrens 	/*
3567fa9e4066Sahrens 	 * Read the directory info.  If it's the first time, set things up.
3568fa9e4066Sahrens 	 */
3569b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize);
3570b24ab676SJeff Bonwick 	ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3571fa9e4066Sahrens 
3572b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3573b24ab676SJeff Bonwick 		return;
3574fa9e4066Sahrens 
3575b24ab676SJeff Bonwick 	bigobj = od[0].od_object;
3576b24ab676SJeff Bonwick 	packobj = od[1].od_object;
3577b24ab676SJeff Bonwick 	chunksize = od[0].od_gen;
3578b24ab676SJeff Bonwick 	ASSERT(chunksize == od[1].od_gen);
3579fa9e4066Sahrens 
3580fa9e4066Sahrens 	/*
3581fa9e4066Sahrens 	 * Prefetch a random chunk of the big object.
3582fa9e4066Sahrens 	 * Our aim here is to get some async reads in flight
3583fa9e4066Sahrens 	 * for blocks that we may free below; the DMU should
3584fa9e4066Sahrens 	 * handle this race correctly.
3585fa9e4066Sahrens 	 */
3586fa9e4066Sahrens 	n = ztest_random(regions) * stride + ztest_random(width);
3587fa9e4066Sahrens 	s = 1 + ztest_random(2 * width - 1);
3588a2cdcdd2SPaul Dagnelie 	dmu_prefetch(os, bigobj, 0, n * chunksize, s * chunksize,
3589a2cdcdd2SPaul Dagnelie 	    ZIO_PRIORITY_SYNC_READ);
3590fa9e4066Sahrens 
3591fa9e4066Sahrens 	/*
3592fa9e4066Sahrens 	 * Pick a random index and compute the offsets into packobj and bigobj.
3593fa9e4066Sahrens 	 */
3594fa9e4066Sahrens 	n = ztest_random(regions) * stride + ztest_random(width);
3595fa9e4066Sahrens 	s = 1 + ztest_random(width - 1);
3596fa9e4066Sahrens 
3597fa9e4066Sahrens 	packoff = n * sizeof (bufwad_t);
3598fa9e4066Sahrens 	packsize = s * sizeof (bufwad_t);
3599fa9e4066Sahrens 
3600b24ab676SJeff Bonwick 	bigoff = n * chunksize;
3601b24ab676SJeff Bonwick 	bigsize = s * chunksize;
3602fa9e4066Sahrens 
3603fa9e4066Sahrens 	packbuf = umem_alloc(packsize, UMEM_NOFAIL);
3604fa9e4066Sahrens 	bigbuf = umem_alloc(bigsize, UMEM_NOFAIL);
3605fa9e4066Sahrens 
3606fa9e4066Sahrens 	/*
3607fa9e4066Sahrens 	 * free_percent of the time, free a range of bigobj rather than
3608fa9e4066Sahrens 	 * overwriting it.
3609fa9e4066Sahrens 	 */
3610fa9e4066Sahrens 	freeit = (ztest_random(100) < free_percent);
3611fa9e4066Sahrens 
3612fa9e4066Sahrens 	/*
3613fa9e4066Sahrens 	 * Read the current contents of our objects.
3614fa9e4066Sahrens 	 */
3615b24ab676SJeff Bonwick 	error = dmu_read(os, packobj, packoff, packsize, packbuf,
36167bfdf011SNeil Perrin 	    DMU_READ_PREFETCH);
3617fb09f5aaSMadhav Suresh 	ASSERT0(error);
3618b24ab676SJeff Bonwick 	error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
36197bfdf011SNeil Perrin 	    DMU_READ_PREFETCH);
3620fb09f5aaSMadhav Suresh 	ASSERT0(error);
3621fa9e4066Sahrens 
3622fa9e4066Sahrens 	/*
3623fa9e4066Sahrens 	 * Get a tx for the mods to both packobj and bigobj.
3624fa9e4066Sahrens 	 */
3625fa9e4066Sahrens 	tx = dmu_tx_create(os);
3626fa9e4066Sahrens 
3627b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, packobj, packoff, packsize);
3628fa9e4066Sahrens 
3629fa9e4066Sahrens 	if (freeit)
3630b24ab676SJeff Bonwick 		dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
3631fa9e4066Sahrens 	else
3632b24ab676SJeff Bonwick 		dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
3633fa9e4066Sahrens 
3634be9000ccSMatthew Ahrens 	/* This accounts for setting the checksum/compression. */
3635be9000ccSMatthew Ahrens 	dmu_tx_hold_bonus(tx, bigobj);
3636be9000ccSMatthew Ahrens 
3637b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3638b24ab676SJeff Bonwick 	if (txg == 0) {
3639fa9e4066Sahrens 		umem_free(packbuf, packsize);
3640fa9e4066Sahrens 		umem_free(bigbuf, bigsize);
3641fa9e4066Sahrens 		return;
3642fa9e4066Sahrens 	}
3643fa9e4066Sahrens 
36445d7b4d43SMatthew Ahrens 	enum zio_checksum cksum;
36455d7b4d43SMatthew Ahrens 	do {
36465d7b4d43SMatthew Ahrens 		cksum = (enum zio_checksum)
36475d7b4d43SMatthew Ahrens 		    ztest_random_dsl_prop(ZFS_PROP_CHECKSUM);
36485d7b4d43SMatthew Ahrens 	} while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS);
36495d7b4d43SMatthew Ahrens 	dmu_object_set_checksum(os, bigobj, cksum, tx);
3650b24ab676SJeff Bonwick 
36515d7b4d43SMatthew Ahrens 	enum zio_compress comp;
36525d7b4d43SMatthew Ahrens 	do {
36535d7b4d43SMatthew Ahrens 		comp = (enum zio_compress)
36545d7b4d43SMatthew Ahrens 		    ztest_random_dsl_prop(ZFS_PROP_COMPRESSION);
36555d7b4d43SMatthew Ahrens 	} while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS);
36565d7b4d43SMatthew Ahrens 	dmu_object_set_compress(os, bigobj, comp, tx);
3657fa9e4066Sahrens 
3658fa9e4066Sahrens 	/*
3659fa9e4066Sahrens 	 * For each index from n to n + s, verify that the existing bufwad
3660fa9e4066Sahrens 	 * in packobj matches the bufwads at the head and tail of the
3661fa9e4066Sahrens 	 * corresponding chunk in bigobj.  Then update all three bufwads
3662fa9e4066Sahrens 	 * with the new values we want to write out.
3663fa9e4066Sahrens 	 */
3664fa9e4066Sahrens 	for (i = 0; i < s; i++) {
3665fa9e4066Sahrens 		/* LINTED */
3666fa9e4066Sahrens 		pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
3667fa9e4066Sahrens 		/* LINTED */
3668b24ab676SJeff Bonwick 		bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
3669fa9e4066Sahrens 		/* LINTED */
3670b24ab676SJeff Bonwick 		bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
3671fa9e4066Sahrens 
3672fa9e4066Sahrens 		ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
3673fa9e4066Sahrens 		ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
3674fa9e4066Sahrens 
3675fa9e4066Sahrens 		if (pack->bw_txg > txg)
3676fa9e4066Sahrens 			fatal(0, "future leak: got %llx, open txg is %llx",
3677fa9e4066Sahrens 			    pack->bw_txg, txg);
3678fa9e4066Sahrens 
3679fa9e4066Sahrens 		if (pack->bw_data != 0 && pack->bw_index != n + i)
3680fa9e4066Sahrens 			fatal(0, "wrong index: got %llx, wanted %llx+%llx",
3681fa9e4066Sahrens 			    pack->bw_index, n, i);
3682fa9e4066Sahrens 
3683fa9e4066Sahrens 		if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
3684fa9e4066Sahrens 			fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
3685fa9e4066Sahrens 
3686fa9e4066Sahrens 		if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
3687fa9e4066Sahrens 			fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
3688fa9e4066Sahrens 
3689fa9e4066Sahrens 		if (freeit) {
3690fa9e4066Sahrens 			bzero(pack, sizeof (bufwad_t));
3691fa9e4066Sahrens 		} else {
3692fa9e4066Sahrens 			pack->bw_index = n + i;
3693fa9e4066Sahrens 			pack->bw_txg = txg;
3694fa9e4066Sahrens 			pack->bw_data = 1 + ztest_random(-2ULL);
3695fa9e4066Sahrens 		}
3696fa9e4066Sahrens 		*bigH = *pack;
3697fa9e4066Sahrens 		*bigT = *pack;
3698fa9e4066Sahrens 	}
3699fa9e4066Sahrens 
3700fa9e4066Sahrens 	/*
3701fa9e4066Sahrens 	 * We've verified all the old bufwads, and made new ones.
3702fa9e4066Sahrens 	 * Now write them out.
3703fa9e4066Sahrens 	 */
3704b24ab676SJeff Bonwick 	dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3705fa9e4066Sahrens 
3706fa9e4066Sahrens 	if (freeit) {
3707420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 7) {
3708fa9e4066Sahrens 			(void) printf("freeing offset %llx size %llx"
3709fa9e4066Sahrens 			    " txg %llx\n",
3710fa9e4066Sahrens 			    (u_longlong_t)bigoff,
3711fa9e4066Sahrens 			    (u_longlong_t)bigsize,
3712fa9e4066Sahrens 			    (u_longlong_t)txg);
3713fa9e4066Sahrens 		}
3714b24ab676SJeff Bonwick 		VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx));
3715fa9e4066Sahrens 	} else {
3716420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 7) {
3717fa9e4066Sahrens 			(void) printf("writing offset %llx size %llx"
3718fa9e4066Sahrens 			    " txg %llx\n",
3719fa9e4066Sahrens 			    (u_longlong_t)bigoff,
3720fa9e4066Sahrens 			    (u_longlong_t)bigsize,
3721fa9e4066Sahrens 			    (u_longlong_t)txg);
3722fa9e4066Sahrens 		}
3723b24ab676SJeff Bonwick 		dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx);
3724fa9e4066Sahrens 	}
3725fa9e4066Sahrens 
3726fa9e4066Sahrens 	dmu_tx_commit(tx);
3727fa9e4066Sahrens 
3728fa9e4066Sahrens 	/*
3729fa9e4066Sahrens 	 * Sanity check the stuff we just wrote.
3730fa9e4066Sahrens 	 */
3731fa9e4066Sahrens 	{
3732fa9e4066Sahrens 		void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
3733fa9e4066Sahrens 		void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
3734fa9e4066Sahrens 
3735b24ab676SJeff Bonwick 		VERIFY(0 == dmu_read(os, packobj, packoff,
37367bfdf011SNeil Perrin 		    packsize, packcheck, DMU_READ_PREFETCH));
3737b24ab676SJeff Bonwick 		VERIFY(0 == dmu_read(os, bigobj, bigoff,
37387bfdf011SNeil Perrin 		    bigsize, bigcheck, DMU_READ_PREFETCH));
3739fa9e4066Sahrens 
3740fa9e4066Sahrens 		ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
3741fa9e4066Sahrens 		ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
3742fa9e4066Sahrens 
3743fa9e4066Sahrens 		umem_free(packcheck, packsize);
3744fa9e4066Sahrens 		umem_free(bigcheck, bigsize);
3745fa9e4066Sahrens 	}
3746fa9e4066Sahrens 
3747fa9e4066Sahrens 	umem_free(packbuf, packsize);
3748fa9e4066Sahrens 	umem_free(bigbuf, bigsize);
3749fa9e4066Sahrens }
3750fa9e4066Sahrens 
37512fdbea25SAleksandr Guzovskiy void
37522fdbea25SAleksandr Guzovskiy compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
3753b24ab676SJeff Bonwick     uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
37542fdbea25SAleksandr Guzovskiy {
37552fdbea25SAleksandr Guzovskiy 	uint64_t i;
37562fdbea25SAleksandr Guzovskiy 	bufwad_t *pack;
37572fdbea25SAleksandr Guzovskiy 	bufwad_t *bigH;
37582fdbea25SAleksandr Guzovskiy 	bufwad_t *bigT;
37592fdbea25SAleksandr Guzovskiy 
37602fdbea25SAleksandr Guzovskiy 	/*
37612fdbea25SAleksandr Guzovskiy 	 * For each index from n to n + s, verify that the existing bufwad
37622fdbea25SAleksandr Guzovskiy 	 * in packobj matches the bufwads at the head and tail of the
37632fdbea25SAleksandr Guzovskiy 	 * corresponding chunk in bigobj.  Then update all three bufwads
37642fdbea25SAleksandr Guzovskiy 	 * with the new values we want to write out.
37652fdbea25SAleksandr Guzovskiy 	 */
37662fdbea25SAleksandr Guzovskiy 	for (i = 0; i < s; i++) {
37672fdbea25SAleksandr Guzovskiy 		/* LINTED */
37682fdbea25SAleksandr Guzovskiy 		pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
37692fdbea25SAleksandr Guzovskiy 		/* LINTED */
3770b24ab676SJeff Bonwick 		bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
37712fdbea25SAleksandr Guzovskiy 		/* LINTED */
3772b24ab676SJeff Bonwick 		bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
37732fdbea25SAleksandr Guzovskiy 
37742fdbea25SAleksandr Guzovskiy 		ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
37752fdbea25SAleksandr Guzovskiy 		ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
37762fdbea25SAleksandr Guzovskiy 
37772fdbea25SAleksandr Guzovskiy 		if (pack->bw_txg > txg)
37782fdbea25SAleksandr Guzovskiy 			fatal(0, "future leak: got %llx, open txg is %llx",
37792fdbea25SAleksandr Guzovskiy 			    pack->bw_txg, txg);
37802fdbea25SAleksandr Guzovskiy 
37812fdbea25SAleksandr Guzovskiy 		if (pack->bw_data != 0 && pack->bw_index != n + i)
37822fdbea25SAleksandr Guzovskiy 			fatal(0, "wrong index: got %llx, wanted %llx+%llx",
37832fdbea25SAleksandr Guzovskiy 			    pack->bw_index, n, i);
37842fdbea25SAleksandr Guzovskiy 
37852fdbea25SAleksandr Guzovskiy 		if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
37862fdbea25SAleksandr Guzovskiy 			fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
37872fdbea25SAleksandr Guzovskiy 
37882fdbea25SAleksandr Guzovskiy 		if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
37892fdbea25SAleksandr Guzovskiy 			fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
37902fdbea25SAleksandr Guzovskiy 
37912fdbea25SAleksandr Guzovskiy 		pack->bw_index = n + i;
37922fdbea25SAleksandr Guzovskiy 		pack->bw_txg = txg;
37932fdbea25SAleksandr Guzovskiy 		pack->bw_data = 1 + ztest_random(-2ULL);
37942fdbea25SAleksandr Guzovskiy 
37952fdbea25SAleksandr Guzovskiy 		*bigH = *pack;
37962fdbea25SAleksandr Guzovskiy 		*bigT = *pack;
37972fdbea25SAleksandr Guzovskiy 	}
37982fdbea25SAleksandr Guzovskiy }
37992fdbea25SAleksandr Guzovskiy 
38002fdbea25SAleksandr Guzovskiy void
3801b24ab676SJeff Bonwick ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
38022fdbea25SAleksandr Guzovskiy {
3803b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
3804b24ab676SJeff Bonwick 	ztest_od_t od[2];
38052fdbea25SAleksandr Guzovskiy 	dmu_tx_t *tx;
38062fdbea25SAleksandr Guzovskiy 	uint64_t i;
38072fdbea25SAleksandr Guzovskiy 	int error;
38082fdbea25SAleksandr Guzovskiy 	uint64_t n, s, txg;
38092fdbea25SAleksandr Guzovskiy 	bufwad_t *packbuf, *bigbuf;
3810b24ab676SJeff Bonwick 	uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3811b24ab676SJeff Bonwick 	uint64_t blocksize = ztest_random_blocksize();
3812b24ab676SJeff Bonwick 	uint64_t chunksize = blocksize;
38132fdbea25SAleksandr Guzovskiy 	uint64_t regions = 997;
38142fdbea25SAleksandr Guzovskiy 	uint64_t stride = 123456789ULL;
38152fdbea25SAleksandr Guzovskiy 	uint64_t width = 9;
38162fdbea25SAleksandr Guzovskiy 	dmu_buf_t *bonus_db;
38172fdbea25SAleksandr Guzovskiy 	arc_buf_t **bigbuf_arcbufs;
3818b24ab676SJeff Bonwick 	dmu_object_info_t doi;
38192fdbea25SAleksandr Guzovskiy 
38202fdbea25SAleksandr Guzovskiy 	/*
38212fdbea25SAleksandr Guzovskiy 	 * This test uses two objects, packobj and bigobj, that are always
38222fdbea25SAleksandr Guzovskiy 	 * updated together (i.e. in the same tx) so that their contents are
38232fdbea25SAleksandr Guzovskiy 	 * in sync and can be compared.  Their contents relate to each other
38242fdbea25SAleksandr Guzovskiy 	 * in a simple way: packobj is a dense array of 'bufwad' structures,
38252fdbea25SAleksandr Guzovskiy 	 * while bigobj is a sparse array of the same bufwads.  Specifically,
38262fdbea25SAleksandr Guzovskiy 	 * for any index n, there are three bufwads that should be identical:
38272fdbea25SAleksandr Guzovskiy 	 *
38282fdbea25SAleksandr Guzovskiy 	 *	packobj, at offset n * sizeof (bufwad_t)
38292fdbea25SAleksandr Guzovskiy 	 *	bigobj, at the head of the nth chunk
38302fdbea25SAleksandr Guzovskiy 	 *	bigobj, at the tail of the nth chunk
38312fdbea25SAleksandr Guzovskiy 	 *
38322fdbea25SAleksandr Guzovskiy 	 * The chunk size is set equal to bigobj block size so that
38332fdbea25SAleksandr Guzovskiy 	 * dmu_assign_arcbuf() can be tested for object updates.
38342fdbea25SAleksandr Guzovskiy 	 */
38352fdbea25SAleksandr Guzovskiy 
38362fdbea25SAleksandr Guzovskiy 	/*
38372fdbea25SAleksandr Guzovskiy 	 * Read the directory info.  If it's the first time, set things up.
38382fdbea25SAleksandr Guzovskiy 	 */
3839b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
3840b24ab676SJeff Bonwick 	ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
38412fdbea25SAleksandr Guzovskiy 
3842b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3843b24ab676SJeff Bonwick 		return;
38442fdbea25SAleksandr Guzovskiy 
3845b24ab676SJeff Bonwick 	bigobj = od[0].od_object;
3846b24ab676SJeff Bonwick 	packobj = od[1].od_object;
3847b24ab676SJeff Bonwick 	blocksize = od[0].od_blocksize;
3848b24ab676SJeff Bonwick 	chunksize = blocksize;
3849b24ab676SJeff Bonwick 	ASSERT(chunksize == od[1].od_gen);
38502fdbea25SAleksandr Guzovskiy 
3851b24ab676SJeff Bonwick 	VERIFY(dmu_object_info(os, bigobj, &doi) == 0);
3852b24ab676SJeff Bonwick 	VERIFY(ISP2(doi.doi_data_block_size));
3853b24ab676SJeff Bonwick 	VERIFY(chunksize == doi.doi_data_block_size);
3854b24ab676SJeff Bonwick 	VERIFY(chunksize >= 2 * sizeof (bufwad_t));
38552fdbea25SAleksandr Guzovskiy 
38562fdbea25SAleksandr Guzovskiy 	/*
38572fdbea25SAleksandr Guzovskiy 	 * Pick a random index and compute the offsets into packobj and bigobj.
38582fdbea25SAleksandr Guzovskiy 	 */
38592fdbea25SAleksandr Guzovskiy 	n = ztest_random(regions) * stride + ztest_random(width);
38602fdbea25SAleksandr Guzovskiy 	s = 1 + ztest_random(width - 1);
38612fdbea25SAleksandr Guzovskiy 
38622fdbea25SAleksandr Guzovskiy 	packoff = n * sizeof (bufwad_t);
38632fdbea25SAleksandr Guzovskiy 	packsize = s * sizeof (bufwad_t);
38642fdbea25SAleksandr Guzovskiy 
3865b24ab676SJeff Bonwick 	bigoff = n * chunksize;
3866b24ab676SJeff Bonwick 	bigsize = s * chunksize;
38672fdbea25SAleksandr Guzovskiy 
38682fdbea25SAleksandr Guzovskiy 	packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
38692fdbea25SAleksandr Guzovskiy 	bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
38702fdbea25SAleksandr Guzovskiy 
3871b420f3adSRichard Lowe 	VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
38722fdbea25SAleksandr Guzovskiy 
38732fdbea25SAleksandr Guzovskiy 	bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
38742fdbea25SAleksandr Guzovskiy 
38752fdbea25SAleksandr Guzovskiy 	/*
38762fdbea25SAleksandr Guzovskiy 	 * Iteration 0 test zcopy for DB_UNCACHED dbufs.
38772fdbea25SAleksandr Guzovskiy 	 * Iteration 1 test zcopy to already referenced dbufs.
38782fdbea25SAleksandr Guzovskiy 	 * Iteration 2 test zcopy to dirty dbuf in the same txg.
38792fdbea25SAleksandr Guzovskiy 	 * Iteration 3 test zcopy to dbuf dirty in previous txg.
38802fdbea25SAleksandr Guzovskiy 	 * Iteration 4 test zcopy when dbuf is no longer dirty.
38812fdbea25SAleksandr Guzovskiy 	 * Iteration 5 test zcopy when it can't be done.
38822fdbea25SAleksandr Guzovskiy 	 * Iteration 6 one more zcopy write.
38832fdbea25SAleksandr Guzovskiy 	 */
38842fdbea25SAleksandr Guzovskiy 	for (i = 0; i < 7; i++) {
38852fdbea25SAleksandr Guzovskiy 		uint64_t j;
38862fdbea25SAleksandr Guzovskiy 		uint64_t off;
38872fdbea25SAleksandr Guzovskiy 
38882fdbea25SAleksandr Guzovskiy 		/*
38892fdbea25SAleksandr Guzovskiy 		 * In iteration 5 (i == 5) use arcbufs
38902fdbea25SAleksandr Guzovskiy 		 * that don't match bigobj blksz to test
38912fdbea25SAleksandr Guzovskiy 		 * dmu_assign_arcbuf() when it can't directly
38922fdbea25SAleksandr Guzovskiy 		 * assign an arcbuf to a dbuf.
38932fdbea25SAleksandr Guzovskiy 		 */
38942fdbea25SAleksandr Guzovskiy 		for (j = 0; j < s; j++) {
389589c86e32SChris Williamson 			if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
38962fdbea25SAleksandr Guzovskiy 				bigbuf_arcbufs[j] =
3897b24ab676SJeff Bonwick 				    dmu_request_arcbuf(bonus_db, chunksize);
38982fdbea25SAleksandr Guzovskiy 			} else {
38992fdbea25SAleksandr Guzovskiy 				bigbuf_arcbufs[2 * j] =
3900b24ab676SJeff Bonwick 				    dmu_request_arcbuf(bonus_db, chunksize / 2);
39012fdbea25SAleksandr Guzovskiy 				bigbuf_arcbufs[2 * j + 1] =
3902b24ab676SJeff Bonwick 				    dmu_request_arcbuf(bonus_db, chunksize / 2);
39032fdbea25SAleksandr Guzovskiy 			}
39042fdbea25SAleksandr Guzovskiy 		}
39052fdbea25SAleksandr Guzovskiy 
39062fdbea25SAleksandr Guzovskiy 		/*
39072fdbea25SAleksandr Guzovskiy 		 * Get a tx for the mods to both packobj and bigobj.
39082fdbea25SAleksandr Guzovskiy 		 */
39092fdbea25SAleksandr Guzovskiy 		tx = dmu_tx_create(os);
39102fdbea25SAleksandr Guzovskiy 
3911b24ab676SJeff Bonwick 		dmu_tx_hold_write(tx, packobj, packoff, packsize);
3912b24ab676SJeff Bonwick 		dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
39132fdbea25SAleksandr Guzovskiy 
3914b24ab676SJeff Bonwick 		txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3915b24ab676SJeff Bonwick 		if (txg == 0) {
39162fdbea25SAleksandr Guzovskiy 			umem_free(packbuf, packsize);
39172fdbea25SAleksandr Guzovskiy 			umem_free(bigbuf, bigsize);
39182fdbea25SAleksandr Guzovskiy 			for (j = 0; j < s; j++) {
391989c86e32SChris Williamson 				if (i != 5 ||
392089c86e32SChris Williamson 				    chunksize < (SPA_MINBLOCKSIZE * 2)) {
39212fdbea25SAleksandr Guzovskiy 					dmu_return_arcbuf(bigbuf_arcbufs[j]);
39222fdbea25SAleksandr Guzovskiy 				} else {
39232fdbea25SAleksandr Guzovskiy 					dmu_return_arcbuf(
39242fdbea25SAleksandr Guzovskiy 					    bigbuf_arcbufs[2 * j]);
39252fdbea25SAleksandr Guzovskiy 					dmu_return_arcbuf(
39262fdbea25SAleksandr Guzovskiy 					    bigbuf_arcbufs[2 * j + 1]);
39272fdbea25SAleksandr Guzovskiy 				}
39282fdbea25SAleksandr Guzovskiy 			}
39292fdbea25SAleksandr Guzovskiy 			umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
39302fdbea25SAleksandr Guzovskiy 			dmu_buf_rele(bonus_db, FTAG);
39312fdbea25SAleksandr Guzovskiy 			return;
39322fdbea25SAleksandr Guzovskiy 		}
39332fdbea25SAleksandr Guzovskiy 
39342fdbea25SAleksandr Guzovskiy 		/*
39352fdbea25SAleksandr Guzovskiy 		 * 50% of the time don't read objects in the 1st iteration to
39362fdbea25SAleksandr Guzovskiy 		 * test dmu_assign_arcbuf() for the case when there're no
39372fdbea25SAleksandr Guzovskiy 		 * existing dbufs for the specified offsets.
39382fdbea25SAleksandr Guzovskiy 		 */
39392fdbea25SAleksandr Guzovskiy 		if (i != 0 || ztest_random(2) != 0) {
3940b24ab676SJeff Bonwick 			error = dmu_read(os, packobj, packoff,
39417bfdf011SNeil Perrin 			    packsize, packbuf, DMU_READ_PREFETCH);
3942fb09f5aaSMadhav Suresh 			ASSERT0(error);
3943b24ab676SJeff Bonwick 			error = dmu_read(os, bigobj, bigoff, bigsize,
39447bfdf011SNeil Perrin 			    bigbuf, DMU_READ_PREFETCH);
3945fb09f5aaSMadhav Suresh 			ASSERT0(error);
39462fdbea25SAleksandr Guzovskiy 		}
39472fdbea25SAleksandr Guzovskiy 		compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
3948b24ab676SJeff Bonwick 		    n, chunksize, txg);
39492fdbea25SAleksandr Guzovskiy 
39502fdbea25SAleksandr Guzovskiy 		/*
39512fdbea25SAleksandr Guzovskiy 		 * We've verified all the old bufwads, and made new ones.
39522fdbea25SAleksandr Guzovskiy 		 * Now write them out.
39532fdbea25SAleksandr Guzovskiy 		 */
3954b24ab676SJeff Bonwick 		dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3955420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 7) {
39562fdbea25SAleksandr Guzovskiy 			(void) printf("writing offset %llx size %llx"
39572fdbea25SAleksandr Guzovskiy 			    " txg %llx\n",
39582fdbea25SAleksandr Guzovskiy 			    (u_longlong_t)bigoff,
39592fdbea25SAleksandr Guzovskiy 			    (u_longlong_t)bigsize,
39602fdbea25SAleksandr Guzovskiy 			    (u_longlong_t)txg);
39612fdbea25SAleksandr Guzovskiy 		}
3962b24ab676SJeff Bonwick 		for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
39632fdbea25SAleksandr Guzovskiy 			dmu_buf_t *dbt;
396489c86e32SChris Williamson 			if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
39652fdbea25SAleksandr Guzovskiy 				bcopy((caddr_t)bigbuf + (off - bigoff),
3966b24ab676SJeff Bonwick 				    bigbuf_arcbufs[j]->b_data, chunksize);
39672fdbea25SAleksandr Guzovskiy 			} else {
39682fdbea25SAleksandr Guzovskiy 				bcopy((caddr_t)bigbuf + (off - bigoff),
39692fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[2 * j]->b_data,
3970b24ab676SJeff Bonwick 				    chunksize / 2);
39712fdbea25SAleksandr Guzovskiy 				bcopy((caddr_t)bigbuf + (off - bigoff) +
3972b24ab676SJeff Bonwick 				    chunksize / 2,
39732fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[2 * j + 1]->b_data,
3974b24ab676SJeff Bonwick 				    chunksize / 2);
39752fdbea25SAleksandr Guzovskiy 			}
39762fdbea25SAleksandr Guzovskiy 
39772fdbea25SAleksandr Guzovskiy 			if (i == 1) {
3978b24ab676SJeff Bonwick 				VERIFY(dmu_buf_hold(os, bigobj, off,
397947cb52daSJeff Bonwick 				    FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
39802fdbea25SAleksandr Guzovskiy 			}
398189c86e32SChris Williamson 			if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
39822fdbea25SAleksandr Guzovskiy 				dmu_assign_arcbuf(bonus_db, off,
39832fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[j], tx);
39842fdbea25SAleksandr Guzovskiy 			} else {
39852fdbea25SAleksandr Guzovskiy 				dmu_assign_arcbuf(bonus_db, off,
39862fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[2 * j], tx);
39872fdbea25SAleksandr Guzovskiy 				dmu_assign_arcbuf(bonus_db,
3988b24ab676SJeff Bonwick 				    off + chunksize / 2,
39892fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[2 * j + 1], tx);
39902fdbea25SAleksandr Guzovskiy 			}
39912fdbea25SAleksandr Guzovskiy 			if (i == 1) {
39922fdbea25SAleksandr Guzovskiy 				dmu_buf_rele(dbt, FTAG);
39932fdbea25SAleksandr Guzovskiy 			}
39942fdbea25SAleksandr Guzovskiy 		}
39952fdbea25SAleksandr Guzovskiy 		dmu_tx_commit(tx);
39962fdbea25SAleksandr Guzovskiy 
39972fdbea25SAleksandr Guzovskiy 		/*
39982fdbea25SAleksandr Guzovskiy 		 * Sanity check the stuff we just wrote.
39992fdbea25SAleksandr Guzovskiy 		 */
40002fdbea25SAleksandr Guzovskiy 		{
40012fdbea25SAleksandr Guzovskiy 			void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
40022fdbea25SAleksandr Guzovskiy 			void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
40032fdbea25SAleksandr Guzovskiy 
4004b24ab676SJeff Bonwick 			VERIFY(0 == dmu_read(os, packobj, packoff,
40057bfdf011SNeil Perrin 			    packsize, packcheck, DMU_READ_PREFETCH));
4006b24ab676SJeff Bonwick 			VERIFY(0 == dmu_read(os, bigobj, bigoff,
40077bfdf011SNeil Perrin 			    bigsize, bigcheck, DMU_READ_PREFETCH));
40082fdbea25SAleksandr Guzovskiy 
40092fdbea25SAleksandr Guzovskiy 			ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
40102fdbea25SAleksandr Guzovskiy 			ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
40112fdbea25SAleksandr Guzovskiy 
40122fdbea25SAleksandr Guzovskiy 			umem_free(packcheck, packsize);
40132fdbea25SAleksandr Guzovskiy 			umem_free(bigcheck, bigsize);
40142fdbea25SAleksandr Guzovskiy 		}
40152fdbea25SAleksandr Guzovskiy 		if (i == 2) {
4016b24ab676SJeff Bonwick 			txg_wait_open(dmu_objset_pool(os), 0);
4017b24ab676SJeff Bonwick 		} else if (i == 3) {
4018b24ab676SJeff Bonwick 			txg_wait_synced(dmu_objset_pool(os), 0);
4019fa9e4066Sahrens 		}
4020e05725b1Sbonwick 	}
4021e05725b1Sbonwick 
4022b24ab676SJeff Bonwick 	dmu_buf_rele(bonus_db, FTAG);
4023b24ab676SJeff Bonwick 	umem_free(packbuf, packsize);
4024b24ab676SJeff Bonwick 	umem_free(bigbuf, bigsize);
4025b24ab676SJeff Bonwick 	umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
4026b24ab676SJeff Bonwick }
4027fa9e4066Sahrens 
4028b24ab676SJeff Bonwick /* ARGSUSED */
4029b24ab676SJeff Bonwick void
4030b24ab676SJeff Bonwick ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
4031b24ab676SJeff Bonwick {
4032b24ab676SJeff Bonwick 	ztest_od_t od[1];
4033b24ab676SJeff Bonwick 	uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
4034b24ab676SJeff Bonwick 	    (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4035fa9e4066Sahrens 
4036e05725b1Sbonwick 	/*
4037b24ab676SJeff Bonwick 	 * Have multiple threads write to large offsets in an object
4038b24ab676SJeff Bonwick 	 * to verify that parallel writes to an object -- even to the
4039b24ab676SJeff Bonwick 	 * same blocks within the object -- doesn't cause any trouble.
4040e05725b1Sbonwick 	 */
4041b24ab676SJeff Bonwick 	ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4042fa9e4066Sahrens 
4043b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4044e05725b1Sbonwick 		return;
4045fa9e4066Sahrens 
4046b24ab676SJeff Bonwick 	while (ztest_random(10) != 0)
4047b24ab676SJeff Bonwick 		ztest_io(zd, od[0].od_object, offset);
4048b24ab676SJeff Bonwick }
4049fa9e4066Sahrens 
4050b24ab676SJeff Bonwick void
4051b24ab676SJeff Bonwick ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
4052b24ab676SJeff Bonwick {
4053b24ab676SJeff Bonwick 	ztest_od_t od[1];
4054b24ab676SJeff Bonwick 	uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
4055b24ab676SJeff Bonwick 	    (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4056b24ab676SJeff Bonwick 	uint64_t count = ztest_random(20) + 1;
4057b24ab676SJeff Bonwick 	uint64_t blocksize = ztest_random_blocksize();
4058b24ab676SJeff Bonwick 	void *data;
4059fa9e4066Sahrens 
4060b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
4061fa9e4066Sahrens 
4062b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4063e05725b1Sbonwick 		return;
40640e34b6a7Sbonwick 
4065b24ab676SJeff Bonwick 	if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0)
4066f4a72450SJeff Bonwick 		return;
4067f4a72450SJeff Bonwick 
4068b24ab676SJeff Bonwick 	ztest_prealloc(zd, od[0].od_object, offset, count * blocksize);
4069fa9e4066Sahrens 
4070b24ab676SJeff Bonwick 	data = umem_zalloc(blocksize, UMEM_NOFAIL);
4071b24ab676SJeff Bonwick 
4072b24ab676SJeff Bonwick 	while (ztest_random(count) != 0) {
4073b24ab676SJeff Bonwick 		uint64_t randoff = offset + (ztest_random(count) * blocksize);
4074b24ab676SJeff Bonwick 		if (ztest_write(zd, od[0].od_object, randoff, blocksize,
4075b24ab676SJeff Bonwick 		    data) != 0)
4076b24ab676SJeff Bonwick 			break;
4077b24ab676SJeff Bonwick 		while (ztest_random(4) != 0)
4078b24ab676SJeff Bonwick 			ztest_io(zd, od[0].od_object, randoff);
4079b24ab676SJeff Bonwick 	}
4080b24ab676SJeff Bonwick 
4081b24ab676SJeff Bonwick 	umem_free(data, blocksize);
4082fa9e4066Sahrens }
4083fa9e4066Sahrens 
4084fa9e4066Sahrens /*
4085fa9e4066Sahrens  * Verify that zap_{create,destroy,add,remove,update} work as expected.
4086fa9e4066Sahrens  */
4087fa9e4066Sahrens #define	ZTEST_ZAP_MIN_INTS	1
4088fa9e4066Sahrens #define	ZTEST_ZAP_MAX_INTS	4
4089fa9e4066Sahrens #define	ZTEST_ZAP_MAX_PROPS	1000
4090fa9e4066Sahrens 
4091fa9e4066Sahrens void
4092b24ab676SJeff Bonwick ztest_zap(ztest_ds_t *zd, uint64_t id)
4093fa9e4066Sahrens {
4094b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
4095b24ab676SJeff Bonwick 	ztest_od_t od[1];
4096fa9e4066Sahrens 	uint64_t object;
4097fa9e4066Sahrens 	uint64_t txg, last_txg;
4098fa9e4066Sahrens 	uint64_t value[ZTEST_ZAP_MAX_INTS];
4099fa9e4066Sahrens 	uint64_t zl_ints, zl_intsize, prop;
4100fa9e4066Sahrens 	int i, ints;
4101fa9e4066Sahrens 	dmu_tx_t *tx;
4102fa9e4066Sahrens 	char propname[100], txgname[100];
4103fa9e4066Sahrens 	int error;
4104fa9e4066Sahrens 	char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
4105fa9e4066Sahrens 
4106b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
4107fa9e4066Sahrens 
4108b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4109b24ab676SJeff Bonwick 		return;
4110fa9e4066Sahrens 
4111b24ab676SJeff Bonwick 	object = od[0].od_object;
4112fa9e4066Sahrens 
4113b24ab676SJeff Bonwick 	/*
4114b24ab676SJeff Bonwick 	 * Generate a known hash collision, and verify that
4115b24ab676SJeff Bonwick 	 * we can lookup and remove both entries.
4116b24ab676SJeff Bonwick 	 */
4117b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
4118b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4119b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4120b24ab676SJeff Bonwick 	if (txg == 0)
4121b24ab676SJeff Bonwick 		return;
4122b24ab676SJeff Bonwick 	for (i = 0; i < 2; i++) {
4123b24ab676SJeff Bonwick 		value[i] = i;
4124b420f3adSRichard Lowe 		VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t),
4125b24ab676SJeff Bonwick 		    1, &value[i], tx));
4126b24ab676SJeff Bonwick 	}
4127b24ab676SJeff Bonwick 	for (i = 0; i < 2; i++) {
4128b24ab676SJeff Bonwick 		VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
4129b24ab676SJeff Bonwick 		    sizeof (uint64_t), 1, &value[i], tx));
4130b420f3adSRichard Lowe 		VERIFY3U(0, ==,
4131b420f3adSRichard Lowe 		    zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
4132b24ab676SJeff Bonwick 		ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4133b24ab676SJeff Bonwick 		ASSERT3U(zl_ints, ==, 1);
4134fa9e4066Sahrens 	}
4135b24ab676SJeff Bonwick 	for (i = 0; i < 2; i++) {
4136b420f3adSRichard Lowe 		VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx));
4137b24ab676SJeff Bonwick 	}
4138b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
4139fa9e4066Sahrens 
4140b24ab676SJeff Bonwick 	/*
4141b24ab676SJeff Bonwick 	 * Generate a buch of random entries.
4142b24ab676SJeff Bonwick 	 */
4143fa9e4066Sahrens 	ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS);
4144fa9e4066Sahrens 
4145e05725b1Sbonwick 	prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4146e05725b1Sbonwick 	(void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4147e05725b1Sbonwick 	(void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4148e05725b1Sbonwick 	bzero(value, sizeof (value));
4149e05725b1Sbonwick 	last_txg = 0;
4150fa9e4066Sahrens 
4151e05725b1Sbonwick 	/*
4152e05725b1Sbonwick 	 * If these zap entries already exist, validate their contents.
4153e05725b1Sbonwick 	 */
4154e05725b1Sbonwick 	error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4155e05725b1Sbonwick 	if (error == 0) {
4156e05725b1Sbonwick 		ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4157e05725b1Sbonwick 		ASSERT3U(zl_ints, ==, 1);
4158fa9e4066Sahrens 
4159e05725b1Sbonwick 		VERIFY(zap_lookup(os, object, txgname, zl_intsize,
4160e05725b1Sbonwick 		    zl_ints, &last_txg) == 0);
4161fa9e4066Sahrens 
4162e05725b1Sbonwick 		VERIFY(zap_length(os, object, propname, &zl_intsize,
4163e05725b1Sbonwick 		    &zl_ints) == 0);
4164fa9e4066Sahrens 
4165e05725b1Sbonwick 		ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4166e05725b1Sbonwick 		ASSERT3U(zl_ints, ==, ints);
4167fa9e4066Sahrens 
4168e05725b1Sbonwick 		VERIFY(zap_lookup(os, object, propname, zl_intsize,
4169e05725b1Sbonwick 		    zl_ints, value) == 0);
4170fa9e4066Sahrens 
4171e05725b1Sbonwick 		for (i = 0; i < ints; i++) {
4172e05725b1Sbonwick 			ASSERT3U(value[i], ==, last_txg + object + i);
4173fa9e4066Sahrens 		}
4174e05725b1Sbonwick 	} else {
4175e05725b1Sbonwick 		ASSERT3U(error, ==, ENOENT);
4176e05725b1Sbonwick 	}
4177fa9e4066Sahrens 
4178e05725b1Sbonwick 	/*
4179e05725b1Sbonwick 	 * Atomically update two entries in our zap object.
4180e05725b1Sbonwick 	 * The first is named txg_%llu, and contains the txg
4181e05725b1Sbonwick 	 * in which the property was last updated.  The second
4182e05725b1Sbonwick 	 * is named prop_%llu, and the nth element of its value
4183e05725b1Sbonwick 	 * should be txg + object + n.
4184e05725b1Sbonwick 	 */
4185e05725b1Sbonwick 	tx = dmu_tx_create(os);
4186b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4187b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4188b24ab676SJeff Bonwick 	if (txg == 0)
4189e05725b1Sbonwick 		return;
4190fa9e4066Sahrens 
4191e05725b1Sbonwick 	if (last_txg > txg)
4192e05725b1Sbonwick 		fatal(0, "zap future leak: old %llu new %llu", last_txg, txg);
4193fa9e4066Sahrens 
4194e05725b1Sbonwick 	for (i = 0; i < ints; i++)
4195e05725b1Sbonwick 		value[i] = txg + object + i;
4196fa9e4066Sahrens 
4197b420f3adSRichard Lowe 	VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t),
4198b24ab676SJeff Bonwick 	    1, &txg, tx));
4199b420f3adSRichard Lowe 	VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t),
4200b24ab676SJeff Bonwick 	    ints, value, tx));
4201fa9e4066Sahrens 
4202e05725b1Sbonwick 	dmu_tx_commit(tx);
4203fa9e4066Sahrens 
4204e05725b1Sbonwick 	/*
4205e05725b1Sbonwick 	 * Remove a random pair of entries.
4206e05725b1Sbonwick 	 */
4207e05725b1Sbonwick 	prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4208e05725b1Sbonwick 	(void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4209e05725b1Sbonwick 	(void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4210fa9e4066Sahrens 
4211e05725b1Sbonwick 	error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4212fa9e4066Sahrens 
4213e05725b1Sbonwick 	if (error == ENOENT)
4214e05725b1Sbonwick 		return;
4215fa9e4066Sahrens 
4216fb09f5aaSMadhav Suresh 	ASSERT0(error);
4217fa9e4066Sahrens 
4218e05725b1Sbonwick 	tx = dmu_tx_create(os);
4219b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4220b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4221b24ab676SJeff Bonwick 	if (txg == 0)
422212a2833aSSanjeev Bagewadi 		return;
4223b420f3adSRichard Lowe 	VERIFY3U(0, ==, zap_remove(os, object, txgname, tx));
4224b420f3adSRichard Lowe 	VERIFY3U(0, ==, zap_remove(os, object, propname, tx));
422512a2833aSSanjeev Bagewadi 	dmu_tx_commit(tx);
422612a2833aSSanjeev Bagewadi }
422712a2833aSSanjeev Bagewadi 
422812a2833aSSanjeev Bagewadi /*
422912a2833aSSanjeev Bagewadi  * Testcase to test the upgrading of a microzap to fatzap.
423012a2833aSSanjeev Bagewadi  */
423112a2833aSSanjeev Bagewadi void
4232b24ab676SJeff Bonwick ztest_fzap(ztest_ds_t *zd, uint64_t id)
423312a2833aSSanjeev Bagewadi {
4234b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
4235b24ab676SJeff Bonwick 	ztest_od_t od[1];
4236b24ab676SJeff Bonwick 	uint64_t object, txg;
423712a2833aSSanjeev Bagewadi 
4238b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
423912a2833aSSanjeev Bagewadi 
4240b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4241b24ab676SJeff Bonwick 		return;
424212a2833aSSanjeev Bagewadi 
4243b24ab676SJeff Bonwick 	object = od[0].od_object;
424412a2833aSSanjeev Bagewadi 
424512a2833aSSanjeev Bagewadi 	/*
4246b24ab676SJeff Bonwick 	 * Add entries to this ZAP and make sure it spills over
424712a2833aSSanjeev Bagewadi 	 * and gets upgraded to a fatzap. Also, since we are adding
4248b24ab676SJeff Bonwick 	 * 2050 entries we should see ptrtbl growth and leaf-block split.
424912a2833aSSanjeev Bagewadi 	 */
4250b24ab676SJeff Bonwick 	for (int i = 0; i < 2050; i++) {
4251b24ab676SJeff Bonwick 		char name[MAXNAMELEN];
4252b24ab676SJeff Bonwick 		uint64_t value = i;
4253b24ab676SJeff Bonwick 		dmu_tx_t *tx;
4254b24ab676SJeff Bonwick 		int error;
425512a2833aSSanjeev Bagewadi 
4256b24ab676SJeff Bonwick 		(void) snprintf(name, sizeof (name), "fzap-%llu-%llu",
4257b24ab676SJeff Bonwick 		    id, value);
425812a2833aSSanjeev Bagewadi 
4259b24ab676SJeff Bonwick 		tx = dmu_tx_create(os);
4260b24ab676SJeff Bonwick 		dmu_tx_hold_zap(tx, object, B_TRUE, name);
4261b24ab676SJeff Bonwick 		txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4262b24ab676SJeff Bonwick 		if (txg == 0)
426312a2833aSSanjeev Bagewadi 			return;
4264b24ab676SJeff Bonwick 		error = zap_add(os, object, name, sizeof (uint64_t), 1,
4265b24ab676SJeff Bonwick 		    &value, tx);
426612a2833aSSanjeev Bagewadi 		ASSERT(error == 0 || error == EEXIST);
426712a2833aSSanjeev Bagewadi 		dmu_tx_commit(tx);
426812a2833aSSanjeev Bagewadi 	}
4269fa9e4066Sahrens }
4270fa9e4066Sahrens 
4271b24ab676SJeff Bonwick /* ARGSUSED */
4272fa9e4066Sahrens void
4273b24ab676SJeff Bonwick ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
4274fa9e4066Sahrens {
4275b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
4276b24ab676SJeff Bonwick 	ztest_od_t od[1];
4277fa9e4066Sahrens 	uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
4278fa9e4066Sahrens 	dmu_tx_t *tx;
4279fa9e4066Sahrens 	int i, namelen, error;
4280b24ab676SJeff Bonwick 	int micro = ztest_random(2);
4281fa9e4066Sahrens 	char name[20], string_value[20];
4282fa9e4066Sahrens 	void *data;
4283fa9e4066Sahrens 
4284b24ab676SJeff Bonwick 	ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0);
4285b24ab676SJeff Bonwick 
4286b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4287b24ab676SJeff Bonwick 		return;
4288b24ab676SJeff Bonwick 
4289b24ab676SJeff Bonwick 	object = od[0].od_object;
4290b24ab676SJeff Bonwick 
4291e05725b1Sbonwick 	/*
4292e05725b1Sbonwick 	 * Generate a random name of the form 'xxx.....' where each
4293e05725b1Sbonwick 	 * x is a random printable character and the dots are dots.
4294e05725b1Sbonwick 	 * There are 94 such characters, and the name length goes from
4295e05725b1Sbonwick 	 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
4296e05725b1Sbonwick 	 */
4297e05725b1Sbonwick 	namelen = ztest_random(sizeof (name) - 5) + 5 + 1;
4298fa9e4066Sahrens 
4299e05725b1Sbonwick 	for (i = 0; i < 3; i++)
4300e05725b1Sbonwick 		name[i] = '!' + ztest_random('~' - '!' + 1);
4301e05725b1Sbonwick 	for (; i < namelen - 1; i++)
4302e05725b1Sbonwick 		name[i] = '.';
4303e05725b1Sbonwick 	name[i] = '\0';
4304fa9e4066Sahrens 
4305b24ab676SJeff Bonwick 	if ((namelen & 1) || micro) {
4306e05725b1Sbonwick 		wsize = sizeof (txg);
4307e05725b1Sbonwick 		wc = 1;
4308e05725b1Sbonwick 		data = &txg;
4309e05725b1Sbonwick 	} else {
4310e05725b1Sbonwick 		wsize = 1;
4311e05725b1Sbonwick 		wc = namelen;
4312e05725b1Sbonwick 		data = string_value;
4313e05725b1Sbonwick 	}
4314fa9e4066Sahrens 
4315e05725b1Sbonwick 	count = -1ULL;
43163b2aab18SMatthew Ahrens 	VERIFY0(zap_count(os, object, &count));
4317e05725b1Sbonwick 	ASSERT(count != -1ULL);
4318fa9e4066Sahrens 
4319e05725b1Sbonwick 	/*
4320e05725b1Sbonwick 	 * Select an operation: length, lookup, add, update, remove.
4321e05725b1Sbonwick 	 */
4322e05725b1Sbonwick 	i = ztest_random(5);
4323e05725b1Sbonwick 
4324e05725b1Sbonwick 	if (i >= 2) {
4325e05725b1Sbonwick 		tx = dmu_tx_create(os);
4326b24ab676SJeff Bonwick 		dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4327b24ab676SJeff Bonwick 		txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4328b24ab676SJeff Bonwick 		if (txg == 0)
4329e05725b1Sbonwick 			return;
4330e05725b1Sbonwick 		bcopy(name, string_value, namelen);
4331e05725b1Sbonwick 	} else {
4332e05725b1Sbonwick 		tx = NULL;
4333e05725b1Sbonwick 		txg = 0;
4334e05725b1Sbonwick 		bzero(string_value, namelen);
4335e05725b1Sbonwick 	}
4336fa9e4066Sahrens 
4337e05725b1Sbonwick 	switch (i) {
4338fa9e4066Sahrens 
4339e05725b1Sbonwick 	case 0:
4340e05725b1Sbonwick 		error = zap_length(os, object, name, &zl_wsize, &zl_wc);
4341e05725b1Sbonwick 		if (error == 0) {
4342e05725b1Sbonwick 			ASSERT3U(wsize, ==, zl_wsize);
4343e05725b1Sbonwick 			ASSERT3U(wc, ==, zl_wc);
4344e05725b1Sbonwick 		} else {
4345e05725b1Sbonwick 			ASSERT3U(error, ==, ENOENT);
4346e05725b1Sbonwick 		}
4347e05725b1Sbonwick 		break;
4348fa9e4066Sahrens 
4349e05725b1Sbonwick 	case 1:
4350e05725b1Sbonwick 		error = zap_lookup(os, object, name, wsize, wc, data);
4351e05725b1Sbonwick 		if (error == 0) {
4352e05725b1Sbonwick 			if (data == string_value &&
4353e05725b1Sbonwick 			    bcmp(name, data, namelen) != 0)
4354e05725b1Sbonwick 				fatal(0, "name '%s' != val '%s' len %d",
4355e05725b1Sbonwick 				    name, data, namelen);
4356e05725b1Sbonwick 		} else {
4357e05725b1Sbonwick 			ASSERT3U(error, ==, ENOENT);
4358e05725b1Sbonwick 		}
4359e05725b1Sbonwick 		break;
4360fa9e4066Sahrens 
4361e05725b1Sbonwick 	case 2:
4362e05725b1Sbonwick 		error = zap_add(os, object, name, wsize, wc, data, tx);
4363e05725b1Sbonwick 		ASSERT(error == 0 || error == EEXIST);
4364e05725b1Sbonwick 		break;
4365fa9e4066Sahrens 
4366e05725b1Sbonwick 	case 3:
4367e05725b1Sbonwick 		VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0);
4368e05725b1Sbonwick 		break;
4369fa9e4066Sahrens 
4370e05725b1Sbonwick 	case 4:
4371e05725b1Sbonwick 		error = zap_remove(os, object, name, tx);
4372e05725b1Sbonwick 		ASSERT(error == 0 || error == ENOENT);
4373e05725b1Sbonwick 		break;
4374fa9e4066Sahrens 	}
4375e05725b1Sbonwick 
4376e05725b1Sbonwick 	if (tx != NULL)
4377e05725b1Sbonwick 		dmu_tx_commit(tx);
4378fa9e4066Sahrens }
4379fa9e4066Sahrens 
4380d20e665cSRicardo M. Correia /*
4381d20e665cSRicardo M. Correia  * Commit callback data.
4382d20e665cSRicardo M. Correia  */
4383d20e665cSRicardo M. Correia typedef struct ztest_cb_data {
4384d20e665cSRicardo M. Correia 	list_node_t		zcd_node;
4385d20e665cSRicardo M. Correia 	uint64_t		zcd_txg;
4386d20e665cSRicardo M. Correia 	int			zcd_expected_err;
4387d20e665cSRicardo M. Correia 	boolean_t		zcd_added;
4388d20e665cSRicardo M. Correia 	boolean_t		zcd_called;
4389d20e665cSRicardo M. Correia 	spa_t			*zcd_spa;
4390d20e665cSRicardo M. Correia } ztest_cb_data_t;
4391d20e665cSRicardo M. Correia 
4392d20e665cSRicardo M. Correia /* This is the actual commit callback function */
4393d20e665cSRicardo M. Correia static void
4394d20e665cSRicardo M. Correia ztest_commit_callback(void *arg, int error)
4395d20e665cSRicardo M. Correia {
4396d20e665cSRicardo M. Correia 	ztest_cb_data_t *data = arg;
4397d20e665cSRicardo M. Correia 	uint64_t synced_txg;
4398d20e665cSRicardo M. Correia 
4399d20e665cSRicardo M. Correia 	VERIFY(data != NULL);
4400d20e665cSRicardo M. Correia 	VERIFY3S(data->zcd_expected_err, ==, error);
4401d20e665cSRicardo M. Correia 	VERIFY(!data->zcd_called);
4402d20e665cSRicardo M. Correia 
4403d20e665cSRicardo M. Correia 	synced_txg = spa_last_synced_txg(data->zcd_spa);
4404d20e665cSRicardo M. Correia 	if (data->zcd_txg > synced_txg)
4405d20e665cSRicardo M. Correia 		fatal(0, "commit callback of txg %" PRIu64 " called prematurely"
4406d20e665cSRicardo M. Correia 		    ", last synced txg = %" PRIu64 "\n", data->zcd_txg,
4407d20e665cSRicardo M. Correia 		    synced_txg);
4408d20e665cSRicardo M. Correia 
4409d20e665cSRicardo M. Correia 	data->zcd_called = B_TRUE;
4410d20e665cSRicardo M. Correia 
4411d20e665cSRicardo M. Correia 	if (error == ECANCELED) {
4412fb09f5aaSMadhav Suresh 		ASSERT0(data->zcd_txg);
4413d20e665cSRicardo M. Correia 		ASSERT(!data->zcd_added);
4414d20e665cSRicardo M. Correia 
4415d20e665cSRicardo M. Correia 		/*
4416d20e665cSRicardo M. Correia 		 * The private callback data should be destroyed here, but
4417d20e665cSRicardo M. Correia 		 * since we are going to check the zcd_called field after
4418d20e665cSRicardo M. Correia 		 * dmu_tx_abort(), we will destroy it there.
4419d20e665cSRicardo M. Correia 		 */
4420d20e665cSRicardo M. Correia 		return;
4421d20e665cSRicardo M. Correia 	}
4422d20e665cSRicardo M. Correia 
4423d20e665cSRicardo M. Correia 	/* Was this callback added to the global callback list? */
4424d20e665cSRicardo M. Correia 	if (!data->zcd_added)
4425d20e665cSRicardo M. Correia 		goto out;
4426d20e665cSRicardo M. Correia 
4427d20e665cSRicardo M. Correia 	ASSERT3U(data->zcd_txg, !=, 0);
4428d20e665cSRicardo M. Correia 
4429d20e665cSRicardo M. Correia 	/* Remove our callback from the list */
4430d20e665cSRicardo M. Correia 	(void) mutex_lock(&zcl.zcl_callbacks_lock);
4431d20e665cSRicardo M. Correia 	list_remove(&zcl.zcl_callbacks, data);
4432d20e665cSRicardo M. Correia 	(void) mutex_unlock(&zcl.zcl_callbacks_lock);
4433d20e665cSRicardo M. Correia 
4434d20e665cSRicardo M. Correia out:
4435d20e665cSRicardo M. Correia 	umem_free(data, sizeof (ztest_cb_data_t));
4436d20e665cSRicardo M. Correia }
4437d20e665cSRicardo M. Correia 
4438d20e665cSRicardo M. Correia /* Allocate and initialize callback data structure */
4439d20e665cSRicardo M. Correia static ztest_cb_data_t *
4440d20e665cSRicardo M. Correia ztest_create_cb_data(objset_t *os, uint64_t txg)
4441d20e665cSRicardo M. Correia {
4442d20e665cSRicardo M. Correia 	ztest_cb_data_t *cb_data;
4443d20e665cSRicardo M. Correia 
4444d20e665cSRicardo M. Correia 	cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
4445d20e665cSRicardo M. Correia 
4446d20e665cSRicardo M. Correia 	cb_data->zcd_txg = txg;
4447d20e665cSRicardo M. Correia 	cb_data->zcd_spa = dmu_objset_spa(os);
4448d20e665cSRicardo M. Correia 
4449d20e665cSRicardo M. Correia 	return (cb_data);
4450d20e665cSRicardo M. Correia }
4451d20e665cSRicardo M. Correia 
4452d20e665cSRicardo M. Correia /*
4453d20e665cSRicardo M. Correia  * If a number of txgs equal to this threshold have been created after a commit
4454d20e665cSRicardo M. Correia  * callback has been registered but not called, then we assume there is an
4455d20e665cSRicardo M. Correia  * implementation bug.
4456d20e665cSRicardo M. Correia  */
4457d20e665cSRicardo M. Correia #define	ZTEST_COMMIT_CALLBACK_THRESH	(TXG_CONCURRENT_STATES + 2)
4458d20e665cSRicardo M. Correia 
4459d20e665cSRicardo M. Correia /*
4460d20e665cSRicardo M. Correia  * Commit callback test.
4461d20e665cSRicardo M. Correia  */
4462d20e665cSRicardo M. Correia void
4463b24ab676SJeff Bonwick ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
4464d20e665cSRicardo M. Correia {
4465b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
4466b24ab676SJeff Bonwick 	ztest_od_t od[1];
4467d20e665cSRicardo M. Correia 	dmu_tx_t *tx;
4468d20e665cSRicardo M. Correia 	ztest_cb_data_t *cb_data[3], *tmp_cb;
4469d20e665cSRicardo M. Correia 	uint64_t old_txg, txg;
4470d20e665cSRicardo M. Correia 	int i, error;
4471d20e665cSRicardo M. Correia 
4472b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4473b24ab676SJeff Bonwick 
4474b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4475b24ab676SJeff Bonwick 		return;
4476b24ab676SJeff Bonwick 
4477d20e665cSRicardo M. Correia 	tx = dmu_tx_create(os);
4478d20e665cSRicardo M. Correia 
4479d20e665cSRicardo M. Correia 	cb_data[0] = ztest_create_cb_data(os, 0);
4480d20e665cSRicardo M. Correia 	dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
4481d20e665cSRicardo M. Correia 
4482b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t));
4483d20e665cSRicardo M. Correia 
4484d20e665cSRicardo M. Correia 	/* Every once in a while, abort the transaction on purpose */
4485d20e665cSRicardo M. Correia 	if (ztest_random(100) == 0)
4486d20e665cSRicardo M. Correia 		error = -1;
4487d20e665cSRicardo M. Correia 
4488d20e665cSRicardo M. Correia 	if (!error)
4489d20e665cSRicardo M. Correia 		error = dmu_tx_assign(tx, TXG_NOWAIT);
4490d20e665cSRicardo M. Correia 
4491d20e665cSRicardo M. Correia 	txg = error ? 0 : dmu_tx_get_txg(tx);
4492d20e665cSRicardo M. Correia 
4493d20e665cSRicardo M. Correia 	cb_data[0]->zcd_txg = txg;
4494d20e665cSRicardo M. Correia 	cb_data[1] = ztest_create_cb_data(os, txg);
4495d20e665cSRicardo M. Correia 	dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
4496d20e665cSRicardo M. Correia 
4497d20e665cSRicardo M. Correia 	if (error) {
4498d20e665cSRicardo M. Correia 		/*
4499d20e665cSRicardo M. Correia 		 * It's not a strict requirement to call the registered
4500d20e665cSRicardo M. Correia 		 * callbacks from inside dmu_tx_abort(), but that's what
4501d20e665cSRicardo M. Correia 		 * it's supposed to happen in the current implementation
4502d20e665cSRicardo M. Correia 		 * so we will check for that.
4503d20e665cSRicardo M. Correia 		 */
4504d20e665cSRicardo M. Correia 		for (i = 0; i < 2; i++) {
4505d20e665cSRicardo M. Correia 			cb_data[i]->zcd_expected_err = ECANCELED;
4506d20e665cSRicardo M. Correia 			VERIFY(!cb_data[i]->zcd_called);
4507d20e665cSRicardo M. Correia 		}
4508d20e665cSRicardo M. Correia 
4509d20e665cSRicardo M. Correia 		dmu_tx_abort(tx);
4510d20e665cSRicardo M. Correia 
4511d20e665cSRicardo M. Correia 		for (i = 0; i < 2; i++) {
4512d20e665cSRicardo M. Correia 			VERIFY(cb_data[i]->zcd_called);
4513d20e665cSRicardo M. Correia 			umem_free(cb_data[i], sizeof (ztest_cb_data_t));
4514d20e665cSRicardo M. Correia 		}
4515d20e665cSRicardo M. Correia 
4516d20e665cSRicardo M. Correia 		return;
4517d20e665cSRicardo M. Correia 	}
4518d20e665cSRicardo M. Correia 
4519d20e665cSRicardo M. Correia 	cb_data[2] = ztest_create_cb_data(os, txg);
4520d20e665cSRicardo M. Correia 	dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
4521d20e665cSRicardo M. Correia 
4522d20e665cSRicardo M. Correia 	/*
4523d20e665cSRicardo M. Correia 	 * Read existing data to make sure there isn't a future leak.
4524d20e665cSRicardo M. Correia 	 */
4525b24ab676SJeff Bonwick 	VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t),
4526d20e665cSRicardo M. Correia 	    &old_txg, DMU_READ_PREFETCH));
4527d20e665cSRicardo M. Correia 
4528d20e665cSRicardo M. Correia 	if (old_txg > txg)
4529d20e665cSRicardo M. Correia 		fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64,
4530d20e665cSRicardo M. Correia 		    old_txg, txg);
4531d20e665cSRicardo M. Correia 
4532b24ab676SJeff Bonwick 	dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx);
4533d20e665cSRicardo M. Correia 
4534d20e665cSRicardo M. Correia 	(void) mutex_lock(&zcl.zcl_callbacks_lock);
4535d20e665cSRicardo M. Correia 
4536d20e665cSRicardo M. Correia 	/*
4537d20e665cSRicardo M. Correia 	 * Since commit callbacks don't have any ordering requirement and since
4538d20e665cSRicardo M. Correia 	 * it is theoretically possible for a commit callback to be called
4539d20e665cSRicardo M. Correia 	 * after an arbitrary amount of time has elapsed since its txg has been
4540d20e665cSRicardo M. Correia 	 * synced, it is difficult to reliably determine whether a commit
4541d20e665cSRicardo M. Correia 	 * callback hasn't been called due to high load or due to a flawed
4542d20e665cSRicardo M. Correia 	 * implementation.
4543d20e665cSRicardo M. Correia 	 *
4544d20e665cSRicardo M. Correia 	 * In practice, we will assume that if after a certain number of txgs a
4545d20e665cSRicardo M. Correia 	 * commit callback hasn't been called, then most likely there's an
4546d20e665cSRicardo M. Correia 	 * implementation bug..
4547d20e665cSRicardo M. Correia 	 */
4548d20e665cSRicardo M. Correia 	tmp_cb = list_head(&zcl.zcl_callbacks);
4549d20e665cSRicardo M. Correia 	if (tmp_cb != NULL &&
4550b3d9f2e2SWill Andrews 	    (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) {
4551d20e665cSRicardo M. Correia 		fatal(0, "Commit callback threshold exceeded, oldest txg: %"
4552d20e665cSRicardo M. Correia 		    PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg);
4553d20e665cSRicardo M. Correia 	}
4554d20e665cSRicardo M. Correia 
4555d20e665cSRicardo M. Correia 	/*
4556d20e665cSRicardo M. Correia 	 * Let's find the place to insert our callbacks.
4557d20e665cSRicardo M. Correia 	 *
4558d20e665cSRicardo M. Correia 	 * Even though the list is ordered by txg, it is possible for the
4559d20e665cSRicardo M. Correia 	 * insertion point to not be the end because our txg may already be
4560d20e665cSRicardo M. Correia 	 * quiescing at this point and other callbacks in the open txg
4561d20e665cSRicardo M. Correia 	 * (from other objsets) may have sneaked in.
4562d20e665cSRicardo M. Correia 	 */
4563d20e665cSRicardo M. Correia 	tmp_cb = list_tail(&zcl.zcl_callbacks);
4564d20e665cSRicardo M. Correia 	while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
4565d20e665cSRicardo M. Correia 		tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
4566d20e665cSRicardo M. Correia 
4567d20e665cSRicardo M. Correia 	/* Add the 3 callbacks to the list */
4568d20e665cSRicardo M. Correia 	for (i = 0; i < 3; i++) {
4569d20e665cSRicardo M. Correia 		if (tmp_cb == NULL)
4570d20e665cSRicardo M. Correia 			list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
4571d20e665cSRicardo M. Correia 		else
4572d20e665cSRicardo M. Correia 			list_insert_after(&zcl.zcl_callbacks, tmp_cb,
4573d20e665cSRicardo M. Correia 			    cb_data[i]);
4574d20e665cSRicardo M. Correia 
4575d20e665cSRicardo M. Correia 		cb_data[i]->zcd_added = B_TRUE;
4576d20e665cSRicardo M. Correia 		VERIFY(!cb_data[i]->zcd_called);
4577d20e665cSRicardo M. Correia 
4578d20e665cSRicardo M. Correia 		tmp_cb = cb_data[i];
4579d20e665cSRicardo M. Correia 	}
4580d20e665cSRicardo M. Correia 
4581d20e665cSRicardo M. Correia 	(void) mutex_unlock(&zcl.zcl_callbacks_lock);
4582d20e665cSRicardo M. Correia 
4583d20e665cSRicardo M. Correia 	dmu_tx_commit(tx);
4584d20e665cSRicardo M. Correia }
4585d20e665cSRicardo M. Correia 
4586b24ab676SJeff Bonwick /* ARGSUSED */
4587fa9e4066Sahrens void
4588b24ab676SJeff Bonwick ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
4589fa9e4066Sahrens {
4590b24ab676SJeff Bonwick 	zfs_prop_t proplist[] = {
4591b24ab676SJeff Bonwick 		ZFS_PROP_CHECKSUM,
4592b24ab676SJeff Bonwick 		ZFS_PROP_COMPRESSION,
4593b24ab676SJeff Bonwick 		ZFS_PROP_COPIES,
4594b24ab676SJeff Bonwick 		ZFS_PROP_DEDUP
4595b24ab676SJeff Bonwick 	};
4596fa9e4066Sahrens 
4597420dfc95SChris Siden 	(void) rw_rdlock(&ztest_name_lock);
4598fa9e4066Sahrens 
4599b24ab676SJeff Bonwick 	for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++)
4600b24ab676SJeff Bonwick 		(void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
4601b24ab676SJeff Bonwick 		    ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
4602fa9e4066Sahrens 
4603420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
4604b24ab676SJeff Bonwick }
4605fa9e4066Sahrens 
4606b24ab676SJeff Bonwick /* ARGSUSED */
4607b24ab676SJeff Bonwick void
4608b24ab676SJeff Bonwick ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
4609b24ab676SJeff Bonwick {
4610b24ab676SJeff Bonwick 	nvlist_t *props = NULL;
4611ea8dc4b6Seschrock 
4612420dfc95SChris Siden 	(void) rw_rdlock(&ztest_name_lock);
4613ea8dc4b6Seschrock 
4614420dfc95SChris Siden 	(void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO,
4615b24ab676SJeff Bonwick 	    ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN));
4616fa9e4066Sahrens 
4617fb09f5aaSMadhav Suresh 	VERIFY0(spa_prop_get(ztest_spa, &props));
4618fa9e4066Sahrens 
4619420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 6)
4620b24ab676SJeff Bonwick 		dump_nvlist(props, 4);
4621fa9e4066Sahrens 
4622b24ab676SJeff Bonwick 	nvlist_free(props);
4623fa9e4066Sahrens 
4624420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
4625fa9e4066Sahrens }
4626fa9e4066Sahrens 
46273b2aab18SMatthew Ahrens static int
46283b2aab18SMatthew Ahrens user_release_one(const char *snapname, const char *holdname)
46293b2aab18SMatthew Ahrens {
46303b2aab18SMatthew Ahrens 	nvlist_t *snaps, *holds;
46313b2aab18SMatthew Ahrens 	int error;
46323b2aab18SMatthew Ahrens 
46333b2aab18SMatthew Ahrens 	snaps = fnvlist_alloc();
46343b2aab18SMatthew Ahrens 	holds = fnvlist_alloc();
46353b2aab18SMatthew Ahrens 	fnvlist_add_boolean(holds, holdname);
46363b2aab18SMatthew Ahrens 	fnvlist_add_nvlist(snaps, snapname, holds);
46373b2aab18SMatthew Ahrens 	fnvlist_free(holds);
46383b2aab18SMatthew Ahrens 	error = dsl_dataset_user_release(snaps, NULL);
46393b2aab18SMatthew Ahrens 	fnvlist_free(snaps);
46403b2aab18SMatthew Ahrens 	return (error);
46413b2aab18SMatthew Ahrens }
46423b2aab18SMatthew Ahrens 
46435c987a37SChris Kirby /*
46445c987a37SChris Kirby  * Test snapshot hold/release and deferred destroy.
46455c987a37SChris Kirby  */
46465c987a37SChris Kirby void
4647b24ab676SJeff Bonwick ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
46485c987a37SChris Kirby {
46495c987a37SChris Kirby 	int error;
4650b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
46515c987a37SChris Kirby 	objset_t *origin;
46525c987a37SChris Kirby 	char snapname[100];
46535c987a37SChris Kirby 	char fullname[100];
46545c987a37SChris Kirby 	char clonename[100];
46555c987a37SChris Kirby 	char tag[100];
46565c987a37SChris Kirby 	char osname[MAXNAMELEN];
46573b2aab18SMatthew Ahrens 	nvlist_t *holds;
46585c987a37SChris Kirby 
4659420dfc95SChris Siden 	(void) rw_rdlock(&ztest_name_lock);
46605c987a37SChris Kirby 
46615c987a37SChris Kirby 	dmu_objset_name(os, osname);
46625c987a37SChris Kirby 
46633b2aab18SMatthew Ahrens 	(void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id);
46643b2aab18SMatthew Ahrens 	(void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
46653b2aab18SMatthew Ahrens 	(void) snprintf(clonename, sizeof (clonename),
46663b2aab18SMatthew Ahrens 	    "%s/ch1_%llu", osname, id);
46673b2aab18SMatthew Ahrens 	(void) snprintf(tag, sizeof (tag), "tag_%llu", id);
46685c987a37SChris Kirby 
46695c987a37SChris Kirby 	/*
46705c987a37SChris Kirby 	 * Clean up from any previous run.
46715c987a37SChris Kirby 	 */
46723b2aab18SMatthew Ahrens 	error = dsl_destroy_head(clonename);
46733b2aab18SMatthew Ahrens 	if (error != ENOENT)
46743b2aab18SMatthew Ahrens 		ASSERT0(error);
46753b2aab18SMatthew Ahrens 	error = user_release_one(fullname, tag);
46763b2aab18SMatthew Ahrens 	if (error != ESRCH && error != ENOENT)
46773b2aab18SMatthew Ahrens 		ASSERT0(error);
46783b2aab18SMatthew Ahrens 	error = dsl_destroy_snapshot(fullname, B_FALSE);
46793b2aab18SMatthew Ahrens 	if (error != ENOENT)
46803b2aab18SMatthew Ahrens 		ASSERT0(error);
46815c987a37SChris Kirby 
46825c987a37SChris Kirby 	/*
46835c987a37SChris Kirby 	 * Create snapshot, clone it, mark snap for deferred destroy,
46845c987a37SChris Kirby 	 * destroy clone, verify snap was also destroyed.
46855c987a37SChris Kirby 	 */
46864445fffbSMatthew Ahrens 	error = dmu_objset_snapshot_one(osname, snapname);
46875c987a37SChris Kirby 	if (error) {
46885c987a37SChris Kirby 		if (error == ENOSPC) {
46895c987a37SChris Kirby 			ztest_record_enospc("dmu_objset_snapshot");
46905c987a37SChris Kirby 			goto out;
46915c987a37SChris Kirby 		}
46925c987a37SChris Kirby 		fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
46935c987a37SChris Kirby 	}
46945c987a37SChris Kirby 
46953b2aab18SMatthew Ahrens 	error = dmu_objset_clone(clonename, fullname);
46965c987a37SChris Kirby 	if (error) {
46975c987a37SChris Kirby 		if (error == ENOSPC) {
46985c987a37SChris Kirby 			ztest_record_enospc("dmu_objset_clone");
46995c987a37SChris Kirby 			goto out;
47005c987a37SChris Kirby 		}
47015c987a37SChris Kirby 		fatal(0, "dmu_objset_clone(%s) = %d", clonename, error);
47025c987a37SChris Kirby 	}
47035c987a37SChris Kirby 
47043b2aab18SMatthew Ahrens 	error = dsl_destroy_snapshot(fullname, B_TRUE);
47055c987a37SChris Kirby 	if (error) {
47063b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
47075c987a37SChris Kirby 		    fullname, error);
47085c987a37SChris Kirby 	}
47095c987a37SChris Kirby 
47103b2aab18SMatthew Ahrens 	error = dsl_destroy_head(clonename);
47115c987a37SChris Kirby 	if (error)
47123b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_head(%s) = %d", clonename, error);
47135c987a37SChris Kirby 
47145c987a37SChris Kirby 	error = dmu_objset_hold(fullname, FTAG, &origin);
47155c987a37SChris Kirby 	if (error != ENOENT)
47165c987a37SChris Kirby 		fatal(0, "dmu_objset_hold(%s) = %d", fullname, error);
47175c987a37SChris Kirby 
47185c987a37SChris Kirby 	/*
47195c987a37SChris Kirby 	 * Create snapshot, add temporary hold, verify that we can't
47205c987a37SChris Kirby 	 * destroy a held snapshot, mark for deferred destroy,
47215c987a37SChris Kirby 	 * release hold, verify snapshot was destroyed.
47225c987a37SChris Kirby 	 */
47234445fffbSMatthew Ahrens 	error = dmu_objset_snapshot_one(osname, snapname);
47245c987a37SChris Kirby 	if (error) {
47255c987a37SChris Kirby 		if (error == ENOSPC) {
47265c987a37SChris Kirby 			ztest_record_enospc("dmu_objset_snapshot");
47275c987a37SChris Kirby 			goto out;
47285c987a37SChris Kirby 		}
47295c987a37SChris Kirby 		fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
47305c987a37SChris Kirby 	}
47315c987a37SChris Kirby 
47323b2aab18SMatthew Ahrens 	holds = fnvlist_alloc();
47333b2aab18SMatthew Ahrens 	fnvlist_add_string(holds, fullname, tag);
47343b2aab18SMatthew Ahrens 	error = dsl_dataset_user_hold(holds, 0, NULL);
47353b2aab18SMatthew Ahrens 	fnvlist_free(holds);
47363b2aab18SMatthew Ahrens 
47375d7b4d43SMatthew Ahrens 	if (error == ENOSPC) {
47385d7b4d43SMatthew Ahrens 		ztest_record_enospc("dsl_dataset_user_hold");
47395d7b4d43SMatthew Ahrens 		goto out;
47405d7b4d43SMatthew Ahrens 	} else if (error) {
47415d7b4d43SMatthew Ahrens 		fatal(0, "dsl_dataset_user_hold(%s, %s) = %u",
47425d7b4d43SMatthew Ahrens 		    fullname, tag, error);
47435d7b4d43SMatthew Ahrens 	}
47445c987a37SChris Kirby 
47453b2aab18SMatthew Ahrens 	error = dsl_destroy_snapshot(fullname, B_FALSE);
47465c987a37SChris Kirby 	if (error != EBUSY) {
47473b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
47485c987a37SChris Kirby 		    fullname, error);
47495c987a37SChris Kirby 	}
47505c987a37SChris Kirby 
47513b2aab18SMatthew Ahrens 	error = dsl_destroy_snapshot(fullname, B_TRUE);
47525c987a37SChris Kirby 	if (error) {
47533b2aab18SMatthew Ahrens 		fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
47545c987a37SChris Kirby 		    fullname, error);
47555c987a37SChris Kirby 	}
47565c987a37SChris Kirby 
47573b2aab18SMatthew Ahrens 	error = user_release_one(fullname, tag);
47585c987a37SChris Kirby 	if (error)
4759a7a845e4SSteven Hartland 		fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error);
47605c987a37SChris Kirby 
47613b2aab18SMatthew Ahrens 	VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
47625c987a37SChris Kirby 
47635c987a37SChris Kirby out:
4764420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
47655c987a37SChris Kirby }
47665c987a37SChris Kirby 
4767fa9e4066Sahrens /*
4768fa9e4066Sahrens  * Inject random faults into the on-disk data.
4769fa9e4066Sahrens  */
4770b24ab676SJeff Bonwick /* ARGSUSED */
4771fa9e4066Sahrens void
4772b24ab676SJeff Bonwick ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
4773fa9e4066Sahrens {
4774b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4775420dfc95SChris Siden 	spa_t *spa = ztest_spa;
4776fa9e4066Sahrens 	int fd;
4777fa9e4066Sahrens 	uint64_t offset;
47781195e687SMark J Musante 	uint64_t leaves;
4779fa9e4066Sahrens 	uint64_t bad = 0x1990c0ffeedecade;
4780fa9e4066Sahrens 	uint64_t top, leaf;
4781fa9e4066Sahrens 	char path0[MAXPATHLEN];
4782fa9e4066Sahrens 	char pathrand[MAXPATHLEN];
4783fa9e4066Sahrens 	size_t fsize;
4784f9eb9fdfSMatthew Ahrens 	int bshift = SPA_MAXBLOCKSHIFT + 2;	/* don't scrog all labels */
4785fa9e4066Sahrens 	int iters = 1000;
47861195e687SMark J Musante 	int maxfaults;
47871195e687SMark J Musante 	int mirror_save;
4788e14bb325SJeff Bonwick 	vdev_t *vd0 = NULL;
4789ea8dc4b6Seschrock 	uint64_t guid0 = 0;
47908f18d1faSGeorge Wilson 	boolean_t islog = B_FALSE;
4791ea8dc4b6Seschrock 
4792420dfc95SChris Siden 	VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
47931195e687SMark J Musante 	maxfaults = MAXFAULTS();
4794420dfc95SChris Siden 	leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
47951195e687SMark J Musante 	mirror_save = zs->zs_mirrors;
4796420dfc95SChris Siden 	VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
47971195e687SMark J Musante 
4798e14bb325SJeff Bonwick 	ASSERT(leaves >= 1);
4799fa9e4066Sahrens 
48002c1e2b44SGeorge Wilson 	/*
48012c1e2b44SGeorge Wilson 	 * Grab the name lock as reader. There are some operations
48022c1e2b44SGeorge Wilson 	 * which don't like to have their vdevs changed while
48032c1e2b44SGeorge Wilson 	 * they are in progress (i.e. spa_change_guid). Those
48042c1e2b44SGeorge Wilson 	 * operations will have grabbed the name lock as writer.
48052c1e2b44SGeorge Wilson 	 */
48062c1e2b44SGeorge Wilson 	(void) rw_rdlock(&ztest_name_lock);
48072c1e2b44SGeorge Wilson 
4808fa9e4066Sahrens 	/*
4809e14bb325SJeff Bonwick 	 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd.
4810fa9e4066Sahrens 	 */
4811e14bb325SJeff Bonwick 	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
4812fa9e4066Sahrens 
4813e14bb325SJeff Bonwick 	if (ztest_random(2) == 0) {
4814e14bb325SJeff Bonwick 		/*
4815b24ab676SJeff Bonwick 		 * Inject errors on a normal data device or slog device.
4816e14bb325SJeff Bonwick 		 */
4817b24ab676SJeff Bonwick 		top = ztest_random_vdev_top(spa, B_TRUE);
48181195e687SMark J Musante 		leaf = ztest_random(leaves) + zs->zs_splits;
4819fa9e4066Sahrens 
4820e14bb325SJeff Bonwick 		/*
4821e14bb325SJeff Bonwick 		 * Generate paths to the first leaf in this top-level vdev,
4822e14bb325SJeff Bonwick 		 * and to the random leaf we selected.  We'll induce transient
4823e14bb325SJeff Bonwick 		 * write failures and random online/offline activity on leaf 0,
4824e14bb325SJeff Bonwick 		 * and we'll write random garbage to the randomly chosen leaf.
4825e14bb325SJeff Bonwick 		 */
4826e14bb325SJeff Bonwick 		(void) snprintf(path0, sizeof (path0), ztest_dev_template,
4827420dfc95SChris Siden 		    ztest_opts.zo_dir, ztest_opts.zo_pool,
4828420dfc95SChris Siden 		    top * leaves + zs->zs_splits);
4829e14bb325SJeff Bonwick 		(void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template,
4830420dfc95SChris Siden 		    ztest_opts.zo_dir, ztest_opts.zo_pool,
4831420dfc95SChris Siden 		    top * leaves + leaf);
4832fa9e4066Sahrens 
4833e14bb325SJeff Bonwick 		vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
48348f18d1faSGeorge Wilson 		if (vd0 != NULL && vd0->vdev_top->vdev_islog)
48358f18d1faSGeorge Wilson 			islog = B_TRUE;
48368f18d1faSGeorge Wilson 
48372c1e2b44SGeorge Wilson 		/*
48382c1e2b44SGeorge Wilson 		 * If the top-level vdev needs to be resilvered
48392c1e2b44SGeorge Wilson 		 * then we only allow faults on the device that is
48402c1e2b44SGeorge Wilson 		 * resilvering.
48412c1e2b44SGeorge Wilson 		 */
48422c1e2b44SGeorge Wilson 		if (vd0 != NULL && maxfaults != 1 &&
48432c1e2b44SGeorge Wilson 		    (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) ||
4844b4952e17SGeorge Wilson 		    vd0->vdev_resilver_txg != 0)) {
4845e14bb325SJeff Bonwick 			/*
4846e14bb325SJeff Bonwick 			 * Make vd0 explicitly claim to be unreadable,
4847e14bb325SJeff Bonwick 			 * or unwriteable, or reach behind its back
4848e14bb325SJeff Bonwick 			 * and close the underlying fd.  We can do this if
4849e14bb325SJeff Bonwick 			 * maxfaults == 0 because we'll fail and reexecute,
4850e14bb325SJeff Bonwick 			 * and we can do it if maxfaults >= 2 because we'll
4851e14bb325SJeff Bonwick 			 * have enough redundancy.  If maxfaults == 1, the
4852e14bb325SJeff Bonwick 			 * combination of this with injection of random data
4853e14bb325SJeff Bonwick 			 * corruption below exceeds the pool's fault tolerance.
4854e14bb325SJeff Bonwick 			 */
4855e14bb325SJeff Bonwick 			vdev_file_t *vf = vd0->vdev_tsd;
4856e14bb325SJeff Bonwick 
4857e14bb325SJeff Bonwick 			if (vf != NULL && ztest_random(3) == 0) {
4858e14bb325SJeff Bonwick 				(void) close(vf->vf_vnode->v_fd);
4859e14bb325SJeff Bonwick 				vf->vf_vnode->v_fd = -1;
4860e14bb325SJeff Bonwick 			} else if (ztest_random(2) == 0) {
4861e14bb325SJeff Bonwick 				vd0->vdev_cant_read = B_TRUE;
4862e14bb325SJeff Bonwick 			} else {
4863e14bb325SJeff Bonwick 				vd0->vdev_cant_write = B_TRUE;
4864e14bb325SJeff Bonwick 			}
4865e14bb325SJeff Bonwick 			guid0 = vd0->vdev_guid;
4866e14bb325SJeff Bonwick 		}
4867e14bb325SJeff Bonwick 	} else {
4868e14bb325SJeff Bonwick 		/*
4869e14bb325SJeff Bonwick 		 * Inject errors on an l2cache device.
4870e14bb325SJeff Bonwick 		 */
4871e14bb325SJeff Bonwick 		spa_aux_vdev_t *sav = &spa->spa_l2cache;
4872fa9e4066Sahrens 
4873e14bb325SJeff Bonwick 		if (sav->sav_count == 0) {
4874e14bb325SJeff Bonwick 			spa_config_exit(spa, SCL_STATE, FTAG);
48752c1e2b44SGeorge Wilson 			(void) rw_unlock(&ztest_name_lock);
4876e14bb325SJeff Bonwick 			return;
4877e14bb325SJeff Bonwick 		}
4878e14bb325SJeff Bonwick 		vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
4879ea8dc4b6Seschrock 		guid0 = vd0->vdev_guid;
4880e14bb325SJeff Bonwick 		(void) strcpy(path0, vd0->vdev_path);
4881e14bb325SJeff Bonwick 		(void) strcpy(pathrand, vd0->vdev_path);
4882e14bb325SJeff Bonwick 
4883e14bb325SJeff Bonwick 		leaf = 0;
4884e14bb325SJeff Bonwick 		leaves = 1;
4885e14bb325SJeff Bonwick 		maxfaults = INT_MAX;	/* no limit on cache devices */
4886fa9e4066Sahrens 	}
4887fa9e4066Sahrens 
4888e14bb325SJeff Bonwick 	spa_config_exit(spa, SCL_STATE, FTAG);
48892c1e2b44SGeorge Wilson 	(void) rw_unlock(&ztest_name_lock);
4890e14bb325SJeff Bonwick 
4891fa9e4066Sahrens 	/*
48928f18d1faSGeorge Wilson 	 * If we can tolerate two or more faults, or we're dealing
48938f18d1faSGeorge Wilson 	 * with a slog, randomly online/offline vd0.
4894fa9e4066Sahrens 	 */
48958f18d1faSGeorge Wilson 	if ((maxfaults >= 2 || islog) && guid0 != 0) {
48968ad4d6ddSJeff Bonwick 		if (ztest_random(10) < 6) {
48978ad4d6ddSJeff Bonwick 			int flags = (ztest_random(2) == 0 ?
48988ad4d6ddSJeff Bonwick 			    ZFS_OFFLINE_TEMPORARY : 0);
48998f18d1faSGeorge Wilson 
49008f18d1faSGeorge Wilson 			/*
49018f18d1faSGeorge Wilson 			 * We have to grab the zs_name_lock as writer to
49028f18d1faSGeorge Wilson 			 * prevent a race between offlining a slog and
49038f18d1faSGeorge Wilson 			 * destroying a dataset. Offlining the slog will
49048f18d1faSGeorge Wilson 			 * grab a reference on the dataset which may cause
49058f18d1faSGeorge Wilson 			 * dmu_objset_destroy() to fail with EBUSY thus
49068f18d1faSGeorge Wilson 			 * leaving the dataset in an inconsistent state.
49078f18d1faSGeorge Wilson 			 */
49088f18d1faSGeorge Wilson 			if (islog)
4909420dfc95SChris Siden 				(void) rw_wrlock(&ztest_name_lock);
49108f18d1faSGeorge Wilson 
49118ad4d6ddSJeff Bonwick 			VERIFY(vdev_offline(spa, guid0, flags) != EBUSY);
49128f18d1faSGeorge Wilson 
49138f18d1faSGeorge Wilson 			if (islog)
4914420dfc95SChris Siden 				(void) rw_unlock(&ztest_name_lock);
49158ad4d6ddSJeff Bonwick 		} else {
49169253d63dSGeorge Wilson 			/*
49179253d63dSGeorge Wilson 			 * Ideally we would like to be able to randomly
49189253d63dSGeorge Wilson 			 * call vdev_[on|off]line without holding locks
49199253d63dSGeorge Wilson 			 * to force unpredictable failures but the side
49209253d63dSGeorge Wilson 			 * effects of vdev_[on|off]line prevent us from
49219253d63dSGeorge Wilson 			 * doing so. We grab the ztest_vdev_lock here to
49229253d63dSGeorge Wilson 			 * prevent a race between injection testing and
49239253d63dSGeorge Wilson 			 * aux_vdev removal.
49249253d63dSGeorge Wilson 			 */
49259253d63dSGeorge Wilson 			VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
49268ad4d6ddSJeff Bonwick 			(void) vdev_online(spa, guid0, 0, NULL);
49279253d63dSGeorge Wilson 			VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
49288ad4d6ddSJeff Bonwick 		}
4929fa9e4066Sahrens 	}
4930fa9e4066Sahrens 
49318f18d1faSGeorge Wilson 	if (maxfaults == 0)
49328f18d1faSGeorge Wilson 		return;
49338f18d1faSGeorge Wilson 
4934fa9e4066Sahrens 	/*
4935ea8dc4b6Seschrock 	 * We have at least single-fault tolerance, so inject data corruption.
4936fa9e4066Sahrens 	 */
4937fa9e4066Sahrens 	fd = open(pathrand, O_RDWR);
4938fa9e4066Sahrens 
4939fa9e4066Sahrens 	if (fd == -1)	/* we hit a gap in the device namespace */
4940fa9e4066Sahrens 		return;
4941fa9e4066Sahrens 
4942fa9e4066Sahrens 	fsize = lseek(fd, 0, SEEK_END);
4943fa9e4066Sahrens 
4944fa9e4066Sahrens 	while (--iters != 0) {
4945f9eb9fdfSMatthew Ahrens 		/*
4946f9eb9fdfSMatthew Ahrens 		 * The offset must be chosen carefully to ensure that
4947f9eb9fdfSMatthew Ahrens 		 * we do not inject a given logical block with errors
4948f9eb9fdfSMatthew Ahrens 		 * on two different leaf devices, because ZFS can not
4949f9eb9fdfSMatthew Ahrens 		 * tolerate that (if maxfaults==1).
4950f9eb9fdfSMatthew Ahrens 		 *
4951f9eb9fdfSMatthew Ahrens 		 * We divide each leaf into chunks of size
4952f9eb9fdfSMatthew Ahrens 		 * (# leaves * SPA_MAXBLOCKSIZE * 4).  Within each chunk
4953f9eb9fdfSMatthew Ahrens 		 * there is a series of ranges to which we can inject errors.
4954f9eb9fdfSMatthew Ahrens 		 * Each range can accept errors on only a single leaf vdev.
4955f9eb9fdfSMatthew Ahrens 		 * The error injection ranges are separated by ranges
4956f9eb9fdfSMatthew Ahrens 		 * which we will not inject errors on any device (DMZs).
4957f9eb9fdfSMatthew Ahrens 		 * Each DMZ must be large enough such that a single block
4958f9eb9fdfSMatthew Ahrens 		 * can not straddle it, so that a single block can not be
4959f9eb9fdfSMatthew Ahrens 		 * a target in two different injection ranges (on different
4960f9eb9fdfSMatthew Ahrens 		 * leaf vdevs).
4961f9eb9fdfSMatthew Ahrens 		 *
4962f9eb9fdfSMatthew Ahrens 		 * For example, with 3 leaves, each chunk looks like:
4963f9eb9fdfSMatthew Ahrens 		 *    0 to  32M: injection range for leaf 0
4964f9eb9fdfSMatthew Ahrens 		 *  32M to  64M: DMZ - no injection allowed
4965f9eb9fdfSMatthew Ahrens 		 *  64M to  96M: injection range for leaf 1
4966f9eb9fdfSMatthew Ahrens 		 *  96M to 128M: DMZ - no injection allowed
4967f9eb9fdfSMatthew Ahrens 		 * 128M to 160M: injection range for leaf 2
4968f9eb9fdfSMatthew Ahrens 		 * 160M to 192M: DMZ - no injection allowed
4969f9eb9fdfSMatthew Ahrens 		 */
4970fa9e4066Sahrens 		offset = ztest_random(fsize / (leaves << bshift)) *
4971fa9e4066Sahrens 		    (leaves << bshift) + (leaf << bshift) +
4972fa9e4066Sahrens 		    (ztest_random(1ULL << (bshift - 1)) & -8ULL);
4973fa9e4066Sahrens 
4974fa9e4066Sahrens 		if (offset >= fsize)
4975fa9e4066Sahrens 			continue;
4976fa9e4066Sahrens 
4977420dfc95SChris Siden 		VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
49781195e687SMark J Musante 		if (mirror_save != zs->zs_mirrors) {
4979420dfc95SChris Siden 			VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
49801195e687SMark J Musante 			(void) close(fd);
49811195e687SMark J Musante 			return;
49821195e687SMark J Musante 		}
4983fa9e4066Sahrens 
4984fa9e4066Sahrens 		if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
4985fa9e4066Sahrens 			fatal(1, "can't inject bad word at 0x%llx in %s",
4986fa9e4066Sahrens 			    offset, pathrand);
49871195e687SMark J Musante 
4988420dfc95SChris Siden 		VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
49891195e687SMark J Musante 
4990420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 7)
49911195e687SMark J Musante 			(void) printf("injected bad word into %s,"
49921195e687SMark J Musante 			    " offset 0x%llx\n", pathrand, (u_longlong_t)offset);
4993fa9e4066Sahrens 	}
4994fa9e4066Sahrens 
4995fa9e4066Sahrens 	(void) close(fd);
4996fa9e4066Sahrens }
4997fa9e4066Sahrens 
4998fa9e4066Sahrens /*
4999b24ab676SJeff Bonwick  * Verify that DDT repair works as expected.
5000fa9e4066Sahrens  */
5001fa9e4066Sahrens void
5002b24ab676SJeff Bonwick ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
5003fa9e4066Sahrens {
5004b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
5005420dfc95SChris Siden 	spa_t *spa = ztest_spa;
5006b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
5007b24ab676SJeff Bonwick 	ztest_od_t od[1];
5008b24ab676SJeff Bonwick 	uint64_t object, blocksize, txg, pattern, psize;
5009b24ab676SJeff Bonwick 	enum zio_checksum checksum = spa_dedup_checksum(spa);
5010b24ab676SJeff Bonwick 	dmu_buf_t *db;
5011b24ab676SJeff Bonwick 	dmu_tx_t *tx;
5012b24ab676SJeff Bonwick 	void *buf;
5013b24ab676SJeff Bonwick 	blkptr_t blk;
5014b24ab676SJeff Bonwick 	int copies = 2 * ZIO_DEDUPDITTO_MIN;
5015fa9e4066Sahrens 
5016b24ab676SJeff Bonwick 	blocksize = ztest_random_blocksize();
5017b24ab676SJeff Bonwick 	blocksize = MIN(blocksize, 2048);	/* because we write so many */
5018fa9e4066Sahrens 
5019b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
5020fa9e4066Sahrens 
5021b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
5022b24ab676SJeff Bonwick 		return;
5023fa9e4066Sahrens 
5024fa9e4066Sahrens 	/*
5025b24ab676SJeff Bonwick 	 * Take the name lock as writer to prevent anyone else from changing
5026b24ab676SJeff Bonwick 	 * the pool and dataset properies we need to maintain during this test.
5027fa9e4066Sahrens 	 */
5028420dfc95SChris Siden 	(void) rw_wrlock(&ztest_name_lock);
5029fa9e4066Sahrens 
5030b24ab676SJeff Bonwick 	if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum,
5031b24ab676SJeff Bonwick 	    B_FALSE) != 0 ||
5032b24ab676SJeff Bonwick 	    ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1,
5033b24ab676SJeff Bonwick 	    B_FALSE) != 0) {
5034420dfc95SChris Siden 		(void) rw_unlock(&ztest_name_lock);
5035b24ab676SJeff Bonwick 		return;
5036b24ab676SJeff Bonwick 	}
5037b24ab676SJeff Bonwick 
5038b24ab676SJeff Bonwick 	object = od[0].od_object;
5039b24ab676SJeff Bonwick 	blocksize = od[0].od_blocksize;
5040e9103aaeSGarrett D'Amore 	pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os);
5041b24ab676SJeff Bonwick 
5042b24ab676SJeff Bonwick 	ASSERT(object != 0);
5043b24ab676SJeff Bonwick 
5044b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
5045b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, object, 0, copies * blocksize);
5046b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
5047b24ab676SJeff Bonwick 	if (txg == 0) {
5048420dfc95SChris Siden 		(void) rw_unlock(&ztest_name_lock);
5049b24ab676SJeff Bonwick 		return;
5050b24ab676SJeff Bonwick 	}
5051fa9e4066Sahrens 
5052fa9e4066Sahrens 	/*
5053b24ab676SJeff Bonwick 	 * Write all the copies of our block.
5054fa9e4066Sahrens 	 */
5055b24ab676SJeff Bonwick 	for (int i = 0; i < copies; i++) {
5056b24ab676SJeff Bonwick 		uint64_t offset = i * blocksize;
50573b2aab18SMatthew Ahrens 		int error = dmu_buf_hold(os, object, offset, FTAG, &db,
50583b2aab18SMatthew Ahrens 		    DMU_READ_NO_PREFETCH);
50593b2aab18SMatthew Ahrens 		if (error != 0) {
50603b2aab18SMatthew Ahrens 			fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u",
50613b2aab18SMatthew Ahrens 			    os, (long long)object, (long long) offset, error);
50623b2aab18SMatthew Ahrens 		}
5063b24ab676SJeff Bonwick 		ASSERT(db->db_offset == offset);
5064b24ab676SJeff Bonwick 		ASSERT(db->db_size == blocksize);
5065b24ab676SJeff Bonwick 		ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) ||
5066b24ab676SJeff Bonwick 		    ztest_pattern_match(db->db_data, db->db_size, 0ULL));
5067b24ab676SJeff Bonwick 		dmu_buf_will_fill(db, tx);
5068b24ab676SJeff Bonwick 		ztest_pattern_set(db->db_data, db->db_size, pattern);
5069b24ab676SJeff Bonwick 		dmu_buf_rele(db, FTAG);
5070b24ab676SJeff Bonwick 	}
5071fa9e4066Sahrens 
5072b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
5073b24ab676SJeff Bonwick 	txg_wait_synced(spa_get_dsl(spa), txg);
5074fa9e4066Sahrens 
5075fa9e4066Sahrens 	/*
5076b24ab676SJeff Bonwick 	 * Find out what block we got.
5077fa9e4066Sahrens 	 */
507880901aeaSGeorge Wilson 	VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db,
507980901aeaSGeorge Wilson 	    DMU_READ_NO_PREFETCH));
5080b24ab676SJeff Bonwick 	blk = *((dmu_buf_impl_t *)db)->db_blkptr;
5081b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
5082fa9e4066Sahrens 
5083fa9e4066Sahrens 	/*
5084b24ab676SJeff Bonwick 	 * Damage the block.  Dedup-ditto will save us when we read it later.
5085fa9e4066Sahrens 	 */
5086b24ab676SJeff Bonwick 	psize = BP_GET_PSIZE(&blk);
5087b24ab676SJeff Bonwick 	buf = zio_buf_alloc(psize);
5088b24ab676SJeff Bonwick 	ztest_pattern_set(buf, psize, ~pattern);
5089fa9e4066Sahrens 
5090b24ab676SJeff Bonwick 	(void) zio_wait(zio_rewrite(NULL, spa, 0, &blk,
5091b24ab676SJeff Bonwick 	    buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE,
5092b24ab676SJeff Bonwick 	    ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL));
5093fa9e4066Sahrens 
5094b24ab676SJeff Bonwick 	zio_buf_free(buf, psize);
5095fa9e4066Sahrens 
5096420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
5097fa9e4066Sahrens }
5098fa9e4066Sahrens 
5099fa9e4066Sahrens /*
5100b24ab676SJeff Bonwick  * Scrub the pool.
5101fa9e4066Sahrens  */
5102b24ab676SJeff Bonwick /* ARGSUSED */
5103b24ab676SJeff Bonwick void
5104b24ab676SJeff Bonwick ztest_scrub(ztest_ds_t *zd, uint64_t id)
5105fa9e4066Sahrens {
5106420dfc95SChris Siden 	spa_t *spa = ztest_spa;
5107fa9e4066Sahrens 
51083f9d6ad7SLin Ling 	(void) spa_scan(spa, POOL_SCAN_SCRUB);
5109b24ab676SJeff Bonwick 	(void) poll(NULL, 0, 100); /* wait a moment, then force a restart */
51103f9d6ad7SLin Ling 	(void) spa_scan(spa, POOL_SCAN_SCRUB);
5111b24ab676SJeff Bonwick }
5112fa9e4066Sahrens 
5113e9103aaeSGarrett D'Amore /*
5114e9103aaeSGarrett D'Amore  * Change the guid for the pool.
5115e9103aaeSGarrett D'Amore  */
5116e9103aaeSGarrett D'Amore /* ARGSUSED */
5117e9103aaeSGarrett D'Amore void
5118e9103aaeSGarrett D'Amore ztest_reguid(ztest_ds_t *zd, uint64_t id)
5119e9103aaeSGarrett D'Amore {
5120420dfc95SChris Siden 	spa_t *spa = ztest_spa;
5121e9103aaeSGarrett D'Amore 	uint64_t orig, load;
5122dfbb9432SGeorge Wilson 	int error;
5123e9103aaeSGarrett D'Amore 
5124e9103aaeSGarrett D'Amore 	orig = spa_guid(spa);
5125e9103aaeSGarrett D'Amore 	load = spa_load_guid(spa);
5126dfbb9432SGeorge Wilson 
5127dfbb9432SGeorge Wilson 	(void) rw_wrlock(&ztest_name_lock);
5128dfbb9432SGeorge Wilson 	error = spa_change_guid(spa);
5129dfbb9432SGeorge Wilson 	(void) rw_unlock(&ztest_name_lock);
5130dfbb9432SGeorge Wilson 
5131dfbb9432SGeorge Wilson 	if (error != 0)
5132e9103aaeSGarrett D'Amore 		return;
5133e9103aaeSGarrett D'Amore 
513425345e46SGeorge Wilson 	if (ztest_opts.zo_verbose >= 4) {
5135e9103aaeSGarrett D'Amore 		(void) printf("Changed guid old %llu -> %llu\n",
5136e9103aaeSGarrett D'Amore 		    (u_longlong_t)orig, (u_longlong_t)spa_guid(spa));
5137e9103aaeSGarrett D'Amore 	}
5138e9103aaeSGarrett D'Amore 
5139e9103aaeSGarrett D'Amore 	VERIFY3U(orig, !=, spa_guid(spa));
5140e9103aaeSGarrett D'Amore 	VERIFY3U(load, ==, spa_load_guid(spa));
5141e9103aaeSGarrett D'Amore }
5142e9103aaeSGarrett D'Amore 
5143b24ab676SJeff Bonwick /*
5144b24ab676SJeff Bonwick  * Rename the pool to a different name and then rename it back.
5145b24ab676SJeff Bonwick  */
5146b24ab676SJeff Bonwick /* ARGSUSED */
5147b24ab676SJeff Bonwick void
5148b24ab676SJeff Bonwick ztest_spa_rename(ztest_ds_t *zd, uint64_t id)
5149b24ab676SJeff Bonwick {
5150b24ab676SJeff Bonwick 	char *oldname, *newname;
5151b24ab676SJeff Bonwick 	spa_t *spa;
5152fa9e4066Sahrens 
5153420dfc95SChris Siden 	(void) rw_wrlock(&ztest_name_lock);
5154fa9e4066Sahrens 
5155420dfc95SChris Siden 	oldname = ztest_opts.zo_pool;
5156b24ab676SJeff Bonwick 	newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL);
5157b24ab676SJeff Bonwick 	(void) strcpy(newname, oldname);
5158b24ab676SJeff Bonwick 	(void) strcat(newname, "_tmp");
5159fa9e4066Sahrens 
5160fa9e4066Sahrens 	/*
5161b24ab676SJeff Bonwick 	 * Do the rename
5162fa9e4066Sahrens 	 */
5163b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_rename(oldname, newname));
5164fa9e4066Sahrens 
5165fa9e4066Sahrens 	/*
5166b24ab676SJeff Bonwick 	 * Try to open it under the old name, which shouldn't exist
5167fa9e4066Sahrens 	 */
5168b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
5169fa9e4066Sahrens 
5170fa9e4066Sahrens 	/*
5171b24ab676SJeff Bonwick 	 * Open it under the new name and make sure it's still the same spa_t.
5172fa9e4066Sahrens 	 */
5173b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
5174fa9e4066Sahrens 
5175420dfc95SChris Siden 	ASSERT(spa == ztest_spa);
5176b24ab676SJeff Bonwick 	spa_close(spa, FTAG);
5177fa9e4066Sahrens 
5178b24ab676SJeff Bonwick 	/*
5179b24ab676SJeff Bonwick 	 * Rename it back to the original
5180b24ab676SJeff Bonwick 	 */
5181b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_rename(newname, oldname));
5182fa9e4066Sahrens 
5183fa9e4066Sahrens 	/*
5184b24ab676SJeff Bonwick 	 * Make sure it can still be opened
5185fa9e4066Sahrens 	 */
5186b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
5187fa9e4066Sahrens 
5188420dfc95SChris Siden 	ASSERT(spa == ztest_spa);
5189b24ab676SJeff Bonwick 	spa_close(spa, FTAG);
5190fa9e4066Sahrens 
5191b24ab676SJeff Bonwick 	umem_free(newname, strlen(newname) + 1);
5192b24ab676SJeff Bonwick 
5193420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
5194fa9e4066Sahrens }
5195fa9e4066Sahrens 
5196b24ab676SJeff Bonwick /*
5197b24ab676SJeff Bonwick  * Verify pool integrity by running zdb.
5198b24ab676SJeff Bonwick  */
5199fa9e4066Sahrens static void
5200b24ab676SJeff Bonwick ztest_run_zdb(char *pool)
5201fa9e4066Sahrens {
5202fa9e4066Sahrens 	int status;
5203fa9e4066Sahrens 	char zdb[MAXPATHLEN + MAXNAMELEN + 20];
5204fa9e4066Sahrens 	char zbuf[1024];
5205fa9e4066Sahrens 	char *bin;
52068654d025Sperrin 	char *ztest;
52078654d025Sperrin 	char *isa;
52088654d025Sperrin 	int isalen;
5209fa9e4066Sahrens 	FILE *fp;
5210fa9e4066Sahrens 
5211fa9e4066Sahrens 	(void) realpath(getexecname(), zdb);
5212fa9e4066Sahrens 
5213fa9e4066Sahrens 	/* zdb lives in /usr/sbin, while ztest lives in /usr/bin */
5214fa9e4066Sahrens 	bin = strstr(zdb, "/usr/bin/");
52158654d025Sperrin 	ztest = strstr(bin, "/ztest");
52168654d025Sperrin 	isa = bin + 8;
52178654d025Sperrin 	isalen = ztest - isa;
52188654d025Sperrin 	isa = strdup(isa);
5219fa9e4066Sahrens 	/* LINTED */
52203a57275aSck 	(void) sprintf(bin,
52215d7b4d43SMatthew Ahrens 	    "/usr/sbin%.*s/zdb -bcc%s%s -d -U %s %s",
52228654d025Sperrin 	    isalen,
52238654d025Sperrin 	    isa,
5224420dfc95SChris Siden 	    ztest_opts.zo_verbose >= 3 ? "s" : "",
5225420dfc95SChris Siden 	    ztest_opts.zo_verbose >= 4 ? "v" : "",
5226f0ba89beSJeff Bonwick 	    spa_config_path,
522788b7b0f2SMatthew Ahrens 	    pool);
52288654d025Sperrin 	free(isa);
5229fa9e4066Sahrens 
5230420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 5)
5231fa9e4066Sahrens 		(void) printf("Executing %s\n", strstr(zdb, "zdb "));
5232fa9e4066Sahrens 
5233fa9e4066Sahrens 	fp = popen(zdb, "r");
5234fa9e4066Sahrens 
5235fa9e4066Sahrens 	while (fgets(zbuf, sizeof (zbuf), fp) != NULL)
5236420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 3)
5237fa9e4066Sahrens 			(void) printf("%s", zbuf);
5238fa9e4066Sahrens 
5239fa9e4066Sahrens 	status = pclose(fp);
5240fa9e4066Sahrens 
5241fa9e4066Sahrens 	if (status == 0)
5242fa9e4066Sahrens 		return;
5243fa9e4066Sahrens 
5244fa9e4066Sahrens 	ztest_dump_core = 0;
5245fa9e4066Sahrens 	if (WIFEXITED(status))
5246fa9e4066Sahrens 		fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status));
5247fa9e4066Sahrens 	else
5248fa9e4066Sahrens 		fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status));
5249fa9e4066Sahrens }
5250fa9e4066Sahrens 
5251fa9e4066Sahrens static void
5252fa9e4066Sahrens ztest_walk_pool_directory(char *header)
5253fa9e4066Sahrens {
5254fa9e4066Sahrens 	spa_t *spa = NULL;
5255fa9e4066Sahrens 
5256420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 6)
5257fa9e4066Sahrens 		(void) printf("%s\n", header);
5258fa9e4066Sahrens 
5259fa9e4066Sahrens 	mutex_enter(&spa_namespace_lock);
5260fa9e4066Sahrens 	while ((spa = spa_next(spa)) != NULL)
5261420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 6)
5262fa9e4066Sahrens 			(void) printf("\t%s\n", spa_name(spa));
5263fa9e4066Sahrens 	mutex_exit(&spa_namespace_lock);
5264fa9e4066Sahrens }
5265fa9e4066Sahrens 
5266fa9e4066Sahrens static void
5267fa9e4066Sahrens ztest_spa_import_export(char *oldname, char *newname)
5268fa9e4066Sahrens {
52698ad4d6ddSJeff Bonwick 	nvlist_t *config, *newconfig;
5270fa9e4066Sahrens 	uint64_t pool_guid;
5271fa9e4066Sahrens 	spa_t *spa;
52723b2aab18SMatthew Ahrens 	int error;
5273fa9e4066Sahrens 
5274420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 4) {
5275fa9e4066Sahrens 		(void) printf("import/export: old = %s, new = %s\n",
5276fa9e4066Sahrens 		    oldname, newname);
5277fa9e4066Sahrens 	}
5278fa9e4066Sahrens 
5279fa9e4066Sahrens 	/*
5280fa9e4066Sahrens 	 * Clean up from previous runs.
5281fa9e4066Sahrens 	 */
5282fa9e4066Sahrens 	(void) spa_destroy(newname);
5283fa9e4066Sahrens 
5284fa9e4066Sahrens 	/*
5285fa9e4066Sahrens 	 * Get the pool's configuration and guid.
5286fa9e4066Sahrens 	 */
5287b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
5288fa9e4066Sahrens 
52898ad4d6ddSJeff Bonwick 	/*
52908ad4d6ddSJeff Bonwick 	 * Kick off a scrub to tickle scrub/export races.
52918ad4d6ddSJeff Bonwick 	 */
52928ad4d6ddSJeff Bonwick 	if (ztest_random(2) == 0)
52933f9d6ad7SLin Ling 		(void) spa_scan(spa, POOL_SCAN_SCRUB);
52948ad4d6ddSJeff Bonwick 
5295fa9e4066Sahrens 	pool_guid = spa_guid(spa);
5296fa9e4066Sahrens 	spa_close(spa, FTAG);
5297fa9e4066Sahrens 
5298fa9e4066Sahrens 	ztest_walk_pool_directory("pools before export");
5299fa9e4066Sahrens 
5300fa9e4066Sahrens 	/*
5301fa9e4066Sahrens 	 * Export it.
5302fa9e4066Sahrens 	 */
5303b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE));
5304fa9e4066Sahrens 
5305fa9e4066Sahrens 	ztest_walk_pool_directory("pools after export");
5306fa9e4066Sahrens 
53078ad4d6ddSJeff Bonwick 	/*
53088ad4d6ddSJeff Bonwick 	 * Try to import it.
53098ad4d6ddSJeff Bonwick 	 */
53108ad4d6ddSJeff Bonwick 	newconfig = spa_tryimport(config);
53118ad4d6ddSJeff Bonwick 	ASSERT(newconfig != NULL);
53128ad4d6ddSJeff Bonwick 	nvlist_free(newconfig);
53138ad4d6ddSJeff Bonwick 
5314fa9e4066Sahrens 	/*
5315fa9e4066Sahrens 	 * Import it under the new name.
5316fa9e4066Sahrens 	 */
53173b2aab18SMatthew Ahrens 	error = spa_import(newname, config, NULL, 0);
53183b2aab18SMatthew Ahrens 	if (error != 0) {
53193b2aab18SMatthew Ahrens 		dump_nvlist(config, 0);
53203b2aab18SMatthew Ahrens 		fatal(B_FALSE, "couldn't import pool %s as %s: error %u",
53213b2aab18SMatthew Ahrens 		    oldname, newname, error);
53223b2aab18SMatthew Ahrens 	}
5323fa9e4066Sahrens 
5324fa9e4066Sahrens 	ztest_walk_pool_directory("pools after import");
5325fa9e4066Sahrens 
5326fa9e4066Sahrens 	/*
5327fa9e4066Sahrens 	 * Try to import it again -- should fail with EEXIST.
5328fa9e4066Sahrens 	 */
53294b964adaSGeorge Wilson 	VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0));
5330fa9e4066Sahrens 
5331fa9e4066Sahrens 	/*
5332fa9e4066Sahrens 	 * Try to import it under a different name -- should fail with EEXIST.
5333fa9e4066Sahrens 	 */
53344b964adaSGeorge Wilson 	VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0));
5335fa9e4066Sahrens 
5336fa9e4066Sahrens 	/*
5337fa9e4066Sahrens 	 * Verify that the pool is no longer visible under the old name.
5338fa9e4066Sahrens 	 */
5339b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
5340fa9e4066Sahrens 
5341fa9e4066Sahrens 	/*
5342fa9e4066Sahrens 	 * Verify that we can open and close the pool using the new name.
5343fa9e4066Sahrens 	 */
5344b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
5345fa9e4066Sahrens 	ASSERT(pool_guid == spa_guid(spa));
5346fa9e4066Sahrens 	spa_close(spa, FTAG);
5347fa9e4066Sahrens 
5348fa9e4066Sahrens 	nvlist_free(config);
5349fa9e4066Sahrens }
5350fa9e4066Sahrens 
53518ad4d6ddSJeff Bonwick static void
53528ad4d6ddSJeff Bonwick ztest_resume(spa_t *spa)
53538ad4d6ddSJeff Bonwick {
5354420dfc95SChris Siden 	if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6)
5355b24ab676SJeff Bonwick 		(void) printf("resuming from suspended state\n");
5356b24ab676SJeff Bonwick 	spa_vdev_state_enter(spa, SCL_NONE);
5357b24ab676SJeff Bonwick 	vdev_clear(spa, NULL);
5358b24ab676SJeff Bonwick 	(void) spa_vdev_state_exit(spa, NULL, 0);
5359b24ab676SJeff Bonwick 	(void) zio_resume(spa);
53608ad4d6ddSJeff Bonwick }
53618ad4d6ddSJeff Bonwick 
53620a4e9518Sgw static void *
53638ad4d6ddSJeff Bonwick ztest_resume_thread(void *arg)
53640a4e9518Sgw {
5365e14bb325SJeff Bonwick 	spa_t *spa = arg;
53660a4e9518Sgw 
53670a4e9518Sgw 	while (!ztest_exiting) {
5368b24ab676SJeff Bonwick 		if (spa_suspended(spa))
5369b24ab676SJeff Bonwick 			ztest_resume(spa);
5370b24ab676SJeff Bonwick 		(void) poll(NULL, 0, 100);
53710a4e9518Sgw 	}
53720a4e9518Sgw 	return (NULL);
53730a4e9518Sgw }
53740a4e9518Sgw 
5375b24ab676SJeff Bonwick static void *
5376b24ab676SJeff Bonwick ztest_deadman_thread(void *arg)
5377b24ab676SJeff Bonwick {
5378b24ab676SJeff Bonwick 	ztest_shared_t *zs = arg;
53792c1e2b44SGeorge Wilson 	spa_t *spa = ztest_spa;
53802c1e2b44SGeorge Wilson 	hrtime_t delta, total = 0;
5381b24ab676SJeff Bonwick 
53822c1e2b44SGeorge Wilson 	for (;;) {
538369962b56SMatthew Ahrens 		delta = zs->zs_thread_stop - zs->zs_thread_start +
538469962b56SMatthew Ahrens 		    MSEC2NSEC(zfs_deadman_synctime_ms);
5385b24ab676SJeff Bonwick 
538669962b56SMatthew Ahrens 		(void) poll(NULL, 0, (int)NSEC2MSEC(delta));
5387b24ab676SJeff Bonwick 
53882c1e2b44SGeorge Wilson 		/*
53892c1e2b44SGeorge Wilson 		 * If the pool is suspended then fail immediately. Otherwise,
53902c1e2b44SGeorge Wilson 		 * check to see if the pool is making any progress. If
53912c1e2b44SGeorge Wilson 		 * vdev_deadman() discovers that there hasn't been any recent
53922c1e2b44SGeorge Wilson 		 * I/Os then it will end up aborting the tests.
53932c1e2b44SGeorge Wilson 		 */
53940713e232SGeorge Wilson 		if (spa_suspended(spa) || spa->spa_root_vdev == NULL) {
53952c1e2b44SGeorge Wilson 			fatal(0, "aborting test after %llu seconds because "
53962c1e2b44SGeorge Wilson 			    "pool has transitioned to a suspended state.",
539769962b56SMatthew Ahrens 			    zfs_deadman_synctime_ms / 1000);
53982c1e2b44SGeorge Wilson 			return (NULL);
53992c1e2b44SGeorge Wilson 		}
54002c1e2b44SGeorge Wilson 		vdev_deadman(spa->spa_root_vdev);
5401b24ab676SJeff Bonwick 
540269962b56SMatthew Ahrens 		total += zfs_deadman_synctime_ms/1000;
54032c1e2b44SGeorge Wilson 		(void) printf("ztest has been running for %lld seconds\n",
54042c1e2b44SGeorge Wilson 		    total);
54052c1e2b44SGeorge Wilson 	}
5406b24ab676SJeff Bonwick }
5407b24ab676SJeff Bonwick 
5408b24ab676SJeff Bonwick static void
5409420dfc95SChris Siden ztest_execute(int test, ztest_info_t *zi, uint64_t id)
5410b24ab676SJeff Bonwick {
5411420dfc95SChris Siden 	ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets];
5412420dfc95SChris Siden 	ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test);
5413b24ab676SJeff Bonwick 	hrtime_t functime = gethrtime();
5414b24ab676SJeff Bonwick 
5415b24ab676SJeff Bonwick 	for (int i = 0; i < zi->zi_iters; i++)
5416b24ab676SJeff Bonwick 		zi->zi_func(zd, id);
5417b24ab676SJeff Bonwick 
5418b24ab676SJeff Bonwick 	functime = gethrtime() - functime;
5419b24ab676SJeff Bonwick 
5420420dfc95SChris Siden 	atomic_add_64(&zc->zc_count, 1);
5421420dfc95SChris Siden 	atomic_add_64(&zc->zc_time, functime);
5422b24ab676SJeff Bonwick 
5423420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 4) {
5424b24ab676SJeff Bonwick 		Dl_info dli;
5425b24ab676SJeff Bonwick 		(void) dladdr((void *)zi->zi_func, &dli);
5426b24ab676SJeff Bonwick 		(void) printf("%6.2f sec in %s\n",
5427b24ab676SJeff Bonwick 		    (double)functime / NANOSEC, dli.dli_sname);
5428b24ab676SJeff Bonwick 	}
5429b24ab676SJeff Bonwick }
5430b24ab676SJeff Bonwick 
5431fa9e4066Sahrens static void *
5432fa9e4066Sahrens ztest_thread(void *arg)
5433fa9e4066Sahrens {
5434420dfc95SChris Siden 	int rand;
5435b24ab676SJeff Bonwick 	uint64_t id = (uintptr_t)arg;
5436fa9e4066Sahrens 	ztest_shared_t *zs = ztest_shared;
5437b24ab676SJeff Bonwick 	uint64_t call_next;
5438b24ab676SJeff Bonwick 	hrtime_t now;
5439fa9e4066Sahrens 	ztest_info_t *zi;
5440420dfc95SChris Siden 	ztest_shared_callstate_t *zc;
5441fa9e4066Sahrens 
5442b24ab676SJeff Bonwick 	while ((now = gethrtime()) < zs->zs_thread_stop) {
5443fa9e4066Sahrens 		/*
5444fa9e4066Sahrens 		 * See if it's time to force a crash.
5445fa9e4066Sahrens 		 */
5446b24ab676SJeff Bonwick 		if (now > zs->zs_thread_kill)
5447b24ab676SJeff Bonwick 			ztest_kill(zs);
5448fa9e4066Sahrens 
5449fa9e4066Sahrens 		/*
5450b24ab676SJeff Bonwick 		 * If we're getting ENOSPC with some regularity, stop.
5451fa9e4066Sahrens 		 */
5452b24ab676SJeff Bonwick 		if (zs->zs_enospc_count > 10)
5453b24ab676SJeff Bonwick 			break;
5454fa9e4066Sahrens 
5455fa9e4066Sahrens 		/*
5456b24ab676SJeff Bonwick 		 * Pick a random function to execute.
5457fa9e4066Sahrens 		 */
5458420dfc95SChris Siden 		rand = ztest_random(ZTEST_FUNCS);
5459420dfc95SChris Siden 		zi = &ztest_info[rand];
5460420dfc95SChris Siden 		zc = ZTEST_GET_SHARED_CALLSTATE(rand);
5461420dfc95SChris Siden 		call_next = zc->zc_next;
5462b24ab676SJeff Bonwick 
5463b24ab676SJeff Bonwick 		if (now >= call_next &&
5464420dfc95SChris Siden 		    atomic_cas_64(&zc->zc_next, call_next, call_next +
5465420dfc95SChris Siden 		    ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) {
5466420dfc95SChris Siden 			ztest_execute(rand, zi, id);
5467420dfc95SChris Siden 		}
5468b24ab676SJeff Bonwick 	}
5469fa9e4066Sahrens 
5470b24ab676SJeff Bonwick 	return (NULL);
5471b24ab676SJeff Bonwick }
5472fa9e4066Sahrens 
5473b24ab676SJeff Bonwick static void
5474b24ab676SJeff Bonwick ztest_dataset_name(char *dsname, char *pool, int d)
5475b24ab676SJeff Bonwick {
5476b24ab676SJeff Bonwick 	(void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d);
5477b24ab676SJeff Bonwick }
5478fa9e4066Sahrens 
5479b24ab676SJeff Bonwick static void
5480420dfc95SChris Siden ztest_dataset_destroy(int d)
5481b24ab676SJeff Bonwick {
5482b24ab676SJeff Bonwick 	char name[MAXNAMELEN];
5483fa9e4066Sahrens 
5484420dfc95SChris Siden 	ztest_dataset_name(name, ztest_opts.zo_pool, d);
5485fa9e4066Sahrens 
5486420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 3)
5487b24ab676SJeff Bonwick 		(void) printf("Destroying %s to free up space\n", name);
5488fa9e4066Sahrens 
5489b24ab676SJeff Bonwick 	/*
5490b24ab676SJeff Bonwick 	 * Cleanup any non-standard clones and snapshots.  In general,
5491b24ab676SJeff Bonwick 	 * ztest thread t operates on dataset (t % zopt_datasets),
5492b24ab676SJeff Bonwick 	 * so there may be more than one thing to clean up.
5493b24ab676SJeff Bonwick 	 */
5494420dfc95SChris Siden 	for (int t = d; t < ztest_opts.zo_threads;
5495420dfc95SChris Siden 	    t += ztest_opts.zo_datasets) {
5496b24ab676SJeff Bonwick 		ztest_dsl_dataset_cleanup(name, t);
5497420dfc95SChris Siden 	}
5498fa9e4066Sahrens 
5499b24ab676SJeff Bonwick 	(void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
5500b24ab676SJeff Bonwick 	    DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
5501b24ab676SJeff Bonwick }
5502b24ab676SJeff Bonwick 
5503b24ab676SJeff Bonwick static void
5504b24ab676SJeff Bonwick ztest_dataset_dirobj_verify(ztest_ds_t *zd)
5505b24ab676SJeff Bonwick {
5506b24ab676SJeff Bonwick 	uint64_t usedobjs, dirobjs, scratch;
5507b24ab676SJeff Bonwick 
5508b24ab676SJeff Bonwick 	/*
5509b24ab676SJeff Bonwick 	 * ZTEST_DIROBJ is the object directory for the entire dataset.
5510b24ab676SJeff Bonwick 	 * Therefore, the number of objects in use should equal the
5511b24ab676SJeff Bonwick 	 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
5512b24ab676SJeff Bonwick 	 * If not, we have an object leak.
5513b24ab676SJeff Bonwick 	 *
5514b24ab676SJeff Bonwick 	 * Note that we can only check this in ztest_dataset_open(),
5515b24ab676SJeff Bonwick 	 * when the open-context and syncing-context values agree.
5516b24ab676SJeff Bonwick 	 * That's because zap_count() returns the open-context value,
5517b24ab676SJeff Bonwick 	 * while dmu_objset_space() returns the rootbp fill count.
5518b24ab676SJeff Bonwick 	 */
5519b420f3adSRichard Lowe 	VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
5520b24ab676SJeff Bonwick 	dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
5521b24ab676SJeff Bonwick 	ASSERT3U(dirobjs + 1, ==, usedobjs);
5522b24ab676SJeff Bonwick }
5523b24ab676SJeff Bonwick 
5524b24ab676SJeff Bonwick static int
5525420dfc95SChris Siden ztest_dataset_open(int d)
5526b24ab676SJeff Bonwick {
5527420dfc95SChris Siden 	ztest_ds_t *zd = &ztest_ds[d];
5528420dfc95SChris Siden 	uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq;
5529b24ab676SJeff Bonwick 	objset_t *os;
5530b24ab676SJeff Bonwick 	zilog_t *zilog;
5531b24ab676SJeff Bonwick 	char name[MAXNAMELEN];
5532b24ab676SJeff Bonwick 	int error;
5533b24ab676SJeff Bonwick 
5534420dfc95SChris Siden 	ztest_dataset_name(name, ztest_opts.zo_pool, d);
5535b24ab676SJeff Bonwick 
5536420dfc95SChris Siden 	(void) rw_rdlock(&ztest_name_lock);
5537b24ab676SJeff Bonwick 
553855da60b9SMark J Musante 	error = ztest_dataset_create(name);
5539b24ab676SJeff Bonwick 	if (error == ENOSPC) {
5540420dfc95SChris Siden 		(void) rw_unlock(&ztest_name_lock);
5541b24ab676SJeff Bonwick 		ztest_record_enospc(FTAG);
5542b24ab676SJeff Bonwick 		return (error);
5543fa9e4066Sahrens 	}
5544b24ab676SJeff Bonwick 	ASSERT(error == 0 || error == EEXIST);
5545fa9e4066Sahrens 
55463b2aab18SMatthew Ahrens 	VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os));
5547420dfc95SChris Siden 	(void) rw_unlock(&ztest_name_lock);
5548b24ab676SJeff Bonwick 
5549420dfc95SChris Siden 	ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os);
5550b24ab676SJeff Bonwick 
5551b24ab676SJeff Bonwick 	zilog = zd->zd_zilog;
5552b24ab676SJeff Bonwick 
5553b24ab676SJeff Bonwick 	if (zilog->zl_header->zh_claim_lr_seq != 0 &&
5554b24ab676SJeff Bonwick 	    zilog->zl_header->zh_claim_lr_seq < committed_seq)
5555b24ab676SJeff Bonwick 		fatal(0, "missing log records: claimed %llu < committed %llu",
5556b24ab676SJeff Bonwick 		    zilog->zl_header->zh_claim_lr_seq, committed_seq);
5557b24ab676SJeff Bonwick 
5558b24ab676SJeff Bonwick 	ztest_dataset_dirobj_verify(zd);
5559b24ab676SJeff Bonwick 
5560b24ab676SJeff Bonwick 	zil_replay(os, zd, ztest_replay_vector);
5561b24ab676SJeff Bonwick 
5562b24ab676SJeff Bonwick 	ztest_dataset_dirobj_verify(zd);
5563b24ab676SJeff Bonwick 
5564420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 6)
5565b24ab676SJeff Bonwick 		(void) printf("%s replay %llu blocks, %llu records, seq %llu\n",
5566b24ab676SJeff Bonwick 		    zd->zd_name,
5567b24ab676SJeff Bonwick 		    (u_longlong_t)zilog->zl_parse_blk_count,
5568b24ab676SJeff Bonwick 		    (u_longlong_t)zilog->zl_parse_lr_count,
5569b24ab676SJeff Bonwick 		    (u_longlong_t)zilog->zl_replaying_seq);
5570b24ab676SJeff Bonwick 
5571b24ab676SJeff Bonwick 	zilog = zil_open(os, ztest_get_data);
5572b24ab676SJeff Bonwick 
5573b24ab676SJeff Bonwick 	if (zilog->zl_replaying_seq != 0 &&
5574b24ab676SJeff Bonwick 	    zilog->zl_replaying_seq < committed_seq)
5575b24ab676SJeff Bonwick 		fatal(0, "missing log records: replayed %llu < committed %llu",
5576b24ab676SJeff Bonwick 		    zilog->zl_replaying_seq, committed_seq);
5577b24ab676SJeff Bonwick 
5578b24ab676SJeff Bonwick 	return (0);
5579b24ab676SJeff Bonwick }
5580b24ab676SJeff Bonwick 
5581b24ab676SJeff Bonwick static void
5582420dfc95SChris Siden ztest_dataset_close(int d)
5583b24ab676SJeff Bonwick {
5584420dfc95SChris Siden 	ztest_ds_t *zd = &ztest_ds[d];
5585b24ab676SJeff Bonwick 
5586b24ab676SJeff Bonwick 	zil_close(zd->zd_zilog);
55873b2aab18SMatthew Ahrens 	dmu_objset_disown(zd->zd_os, zd);
5588b24ab676SJeff Bonwick 
5589b24ab676SJeff Bonwick 	ztest_zd_fini(zd);
5590fa9e4066Sahrens }
5591fa9e4066Sahrens 
5592fa9e4066Sahrens /*
5593fa9e4066Sahrens  * Kick off threads to run tests on all datasets in parallel.
5594fa9e4066Sahrens  */
5595fa9e4066Sahrens static void
5596b24ab676SJeff Bonwick ztest_run(ztest_shared_t *zs)
5597fa9e4066Sahrens {
5598b24ab676SJeff Bonwick 	thread_t *tid;
5599fa9e4066Sahrens 	spa_t *spa;
5600e9103aaeSGarrett D'Amore 	objset_t *os;
5601e14bb325SJeff Bonwick 	thread_t resume_tid;
5602b24ab676SJeff Bonwick 	int error;
5603e14bb325SJeff Bonwick 
5604e14bb325SJeff Bonwick 	ztest_exiting = B_FALSE;
5605fa9e4066Sahrens 
5606fa9e4066Sahrens 	/*
5607b24ab676SJeff Bonwick 	 * Initialize parent/child shared state.
5608fa9e4066Sahrens 	 */
5609420dfc95SChris Siden 	VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0);
5610420dfc95SChris Siden 	VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0);
5611fa9e4066Sahrens 
5612b24ab676SJeff Bonwick 	zs->zs_thread_start = gethrtime();
5613420dfc95SChris Siden 	zs->zs_thread_stop =
5614420dfc95SChris Siden 	    zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC;
5615b24ab676SJeff Bonwick 	zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
5616b24ab676SJeff Bonwick 	zs->zs_thread_kill = zs->zs_thread_stop;
5617420dfc95SChris Siden 	if (ztest_random(100) < ztest_opts.zo_killrate) {
5618420dfc95SChris Siden 		zs->zs_thread_kill -=
5619420dfc95SChris Siden 		    ztest_random(ztest_opts.zo_passtime * NANOSEC);
5620420dfc95SChris Siden 	}
5621fa9e4066Sahrens 
5622b24ab676SJeff Bonwick 	(void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL);
5623fa9e4066Sahrens 
5624b24ab676SJeff Bonwick 	list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
5625b24ab676SJeff Bonwick 	    offsetof(ztest_cb_data_t, zcd_node));
5626fa9e4066Sahrens 
56270a4e9518Sgw 	/*
5628e14bb325SJeff Bonwick 	 * Open our pool.
56290a4e9518Sgw 	 */
5630b24ab676SJeff Bonwick 	kernel_init(FREAD | FWRITE);
56313b2aab18SMatthew Ahrens 	VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
563209c9d376SGeorge Wilson 	spa->spa_debug = B_TRUE;
563330beaff4SGeorge Wilson 	metaslab_preload_limit = ztest_random(20) + 1;
5634420dfc95SChris Siden 	ztest_spa = spa;
5635b24ab676SJeff Bonwick 
56363b2aab18SMatthew Ahrens 	VERIFY0(dmu_objset_own(ztest_opts.zo_pool,
56373b2aab18SMatthew Ahrens 	    DMU_OST_ANY, B_TRUE, FTAG, &os));
5638e9103aaeSGarrett D'Amore 	zs->zs_guid = dmu_objset_fsid_guid(os);
56393b2aab18SMatthew Ahrens 	dmu_objset_disown(os, FTAG);
5640e9103aaeSGarrett D'Amore 
5641b24ab676SJeff Bonwick 	spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN;
56420a4e9518Sgw 
56438ad4d6ddSJeff Bonwick 	/*
56448ad4d6ddSJeff Bonwick 	 * We don't expect the pool to suspend unless maxfaults == 0,
56458ad4d6ddSJeff Bonwick 	 * in which case ztest_fault_inject() temporarily takes away
56468ad4d6ddSJeff Bonwick 	 * the only valid replica.
56478ad4d6ddSJeff Bonwick 	 */
56481195e687SMark J Musante 	if (MAXFAULTS() == 0)
56498ad4d6ddSJeff Bonwick 		spa->spa_failmode = ZIO_FAILURE_MODE_WAIT;
56508ad4d6ddSJeff Bonwick 	else
56518ad4d6ddSJeff Bonwick 		spa->spa_failmode = ZIO_FAILURE_MODE_PANIC;
56528ad4d6ddSJeff Bonwick 
5653fa9e4066Sahrens 	/*
5654e14bb325SJeff Bonwick 	 * Create a thread to periodically resume suspended I/O.
5655fa9e4066Sahrens 	 */
56568ad4d6ddSJeff Bonwick 	VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND,
5657e14bb325SJeff Bonwick 	    &resume_tid) == 0);
5658fa9e4066Sahrens 
5659b24ab676SJeff Bonwick 	/*
5660b24ab676SJeff Bonwick 	 * Create a deadman thread to abort() if we hang.
5661b24ab676SJeff Bonwick 	 */
5662b24ab676SJeff Bonwick 	VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND,
5663b24ab676SJeff Bonwick 	    NULL) == 0);
5664b24ab676SJeff Bonwick 
5665fa9e4066Sahrens 	/*
5666fa9e4066Sahrens 	 * Verify that we can safely inquire about about any object,
5667fa9e4066Sahrens 	 * whether it's allocated or not.  To make it interesting,
5668fa9e4066Sahrens 	 * we probe a 5-wide window around each power of two.
5669fa9e4066Sahrens 	 * This hits all edge cases, including zero and the max.
5670fa9e4066Sahrens 	 */
5671b24ab676SJeff Bonwick 	for (int t = 0; t < 64; t++) {
5672b24ab676SJeff Bonwick 		for (int d = -5; d <= 5; d++) {
5673fa9e4066Sahrens 			error = dmu_object_info(spa->spa_meta_objset,
5674fa9e4066Sahrens 			    (1ULL << t) + d, NULL);
5675ea8dc4b6Seschrock 			ASSERT(error == 0 || error == ENOENT ||
5676ea8dc4b6Seschrock 			    error == EINVAL);
5677fa9e4066Sahrens 		}
5678fa9e4066Sahrens 	}
5679fa9e4066Sahrens 
5680fa9e4066Sahrens 	/*
5681b24ab676SJeff Bonwick 	 * If we got any ENOSPC errors on the previous run, destroy something.
5682fa9e4066Sahrens 	 */
5683b24ab676SJeff Bonwick 	if (zs->zs_enospc_count != 0) {
5684420dfc95SChris Siden 		int d = ztest_random(ztest_opts.zo_datasets);
5685420dfc95SChris Siden 		ztest_dataset_destroy(d);
5686b24ab676SJeff Bonwick 	}
5687fa9e4066Sahrens 	zs->zs_enospc_count = 0;
5688fa9e4066Sahrens 
5689420dfc95SChris Siden 	tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t),
5690420dfc95SChris Siden 	    UMEM_NOFAIL);
5691fa9e4066Sahrens 
5692420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 4)
5693fa9e4066Sahrens 		(void) printf("starting main threads...\n");
5694fa9e4066Sahrens 
5695b24ab676SJeff Bonwick 	/*
5696b24ab676SJeff Bonwick 	 * Kick off all the tests that run in parallel.
5697b24ab676SJeff Bonwick 	 */
5698420dfc95SChris Siden 	for (int t = 0; t < ztest_opts.zo_threads; t++) {
5699420dfc95SChris Siden 		if (t < ztest_opts.zo_datasets &&
5700420dfc95SChris Siden 		    ztest_dataset_open(t) != 0)
5701b24ab676SJeff Bonwick 			return;
5702b24ab676SJeff Bonwick 		VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t,
5703b24ab676SJeff Bonwick 		    THR_BOUND, &tid[t]) == 0);
5704fa9e4066Sahrens 	}
5705fa9e4066Sahrens 
5706b24ab676SJeff Bonwick 	/*
5707b24ab676SJeff Bonwick 	 * Wait for all of the tests to complete.  We go in reverse order
5708b24ab676SJeff Bonwick 	 * so we don't close datasets while threads are still using them.
5709b24ab676SJeff Bonwick 	 */
5710420dfc95SChris Siden 	for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) {
5711b24ab676SJeff Bonwick 		VERIFY(thr_join(tid[t], NULL, NULL) == 0);
5712420dfc95SChris Siden 		if (t < ztest_opts.zo_datasets)
5713420dfc95SChris Siden 			ztest_dataset_close(t);
5714fa9e4066Sahrens 	}
5715fa9e4066Sahrens 
5716fa9e4066Sahrens 	txg_wait_synced(spa_get_dsl(spa), 0);
5717fa9e4066Sahrens 
5718b24ab676SJeff Bonwick 	zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
5719b24ab676SJeff Bonwick 	zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
5720b4952e17SGeorge Wilson 	zfs_dbgmsg_print(FTAG);
5721b24ab676SJeff Bonwick 
5722420dfc95SChris Siden 	umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t));
5723b24ab676SJeff Bonwick 
5724b24ab676SJeff Bonwick 	/* Kill the resume thread */
5725b24ab676SJeff Bonwick 	ztest_exiting = B_TRUE;
5726b24ab676SJeff Bonwick 	VERIFY(thr_join(resume_tid, NULL, NULL) == 0);
5727b24ab676SJeff Bonwick 	ztest_resume(spa);
5728b24ab676SJeff Bonwick 
5729b24ab676SJeff Bonwick 	/*
5730b24ab676SJeff Bonwick 	 * Right before closing the pool, kick off a bunch of async I/O;
5731b24ab676SJeff Bonwick 	 * spa_close() should wait for it to complete.
5732b24ab676SJeff Bonwick 	 */
5733a2cdcdd2SPaul Dagnelie 	for (uint64_t object = 1; object < 50; object++) {
5734a2cdcdd2SPaul Dagnelie 		dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20,
5735a2cdcdd2SPaul Dagnelie 		    ZIO_PRIORITY_SYNC_READ);
5736a2cdcdd2SPaul Dagnelie 	}
5737b24ab676SJeff Bonwick 
5738b24ab676SJeff Bonwick 	spa_close(spa, FTAG);
5739fa9e4066Sahrens 
5740fa9e4066Sahrens 	/*
5741b24ab676SJeff Bonwick 	 * Verify that we can loop over all pools.
5742fa9e4066Sahrens 	 */
5743b24ab676SJeff Bonwick 	mutex_enter(&spa_namespace_lock);
5744b24ab676SJeff Bonwick 	for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
5745420dfc95SChris Siden 		if (ztest_opts.zo_verbose > 3)
5746b24ab676SJeff Bonwick 			(void) printf("spa_next: found %s\n", spa_name(spa));
5747b24ab676SJeff Bonwick 	mutex_exit(&spa_namespace_lock);
5748b24ab676SJeff Bonwick 
5749b24ab676SJeff Bonwick 	/*
5750b24ab676SJeff Bonwick 	 * Verify that we can export the pool and reimport it under a
5751b24ab676SJeff Bonwick 	 * different name.
5752b24ab676SJeff Bonwick 	 */
5753b24ab676SJeff Bonwick 	if (ztest_random(2) == 0) {
5754b24ab676SJeff Bonwick 		char name[MAXNAMELEN];
5755420dfc95SChris Siden 		(void) snprintf(name, MAXNAMELEN, "%s_import",
5756420dfc95SChris Siden 		    ztest_opts.zo_pool);
5757420dfc95SChris Siden 		ztest_spa_import_export(ztest_opts.zo_pool, name);
5758420dfc95SChris Siden 		ztest_spa_import_export(name, ztest_opts.zo_pool);
5759b24ab676SJeff Bonwick 	}
5760b24ab676SJeff Bonwick 
5761b24ab676SJeff Bonwick 	kernel_fini();
576226cb54a9SGeorge Wilson 
576326cb54a9SGeorge Wilson 	list_destroy(&zcl.zcl_callbacks);
576426cb54a9SGeorge Wilson 
576526cb54a9SGeorge Wilson 	(void) _mutex_destroy(&zcl.zcl_callbacks_lock);
576626cb54a9SGeorge Wilson 
5767420dfc95SChris Siden 	(void) rwlock_destroy(&ztest_name_lock);
5768420dfc95SChris Siden 	(void) _mutex_destroy(&ztest_vdev_lock);
5769b24ab676SJeff Bonwick }
5770b24ab676SJeff Bonwick 
5771b24ab676SJeff Bonwick static void
5772420dfc95SChris Siden ztest_freeze(void)
5773b24ab676SJeff Bonwick {
5774420dfc95SChris Siden 	ztest_ds_t *zd = &ztest_ds[0];
5775b24ab676SJeff Bonwick 	spa_t *spa;
57762215e990SMark J Musante 	int numloops = 0;
5777b24ab676SJeff Bonwick 
5778420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 3)
5779b24ab676SJeff Bonwick 		(void) printf("testing spa_freeze()...\n");
5780718d718aSGeorge Wilson 
5781b24ab676SJeff Bonwick 	kernel_init(FREAD | FWRITE);
5782b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5783b420f3adSRichard Lowe 	VERIFY3U(0, ==, ztest_dataset_open(0));
578480901aeaSGeorge Wilson 	spa->spa_debug = B_TRUE;
578580901aeaSGeorge Wilson 	ztest_spa = spa;
5786718d718aSGeorge Wilson 
5787b24ab676SJeff Bonwick 	/*
5788b24ab676SJeff Bonwick 	 * Force the first log block to be transactionally allocated.
5789b24ab676SJeff Bonwick 	 * We have to do this before we freeze the pool -- otherwise
5790b24ab676SJeff Bonwick 	 * the log chain won't be anchored.
5791b24ab676SJeff Bonwick 	 */
5792b24ab676SJeff Bonwick 	while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
5793b24ab676SJeff Bonwick 		ztest_dmu_object_alloc_free(zd, 0);
57945002558fSNeil Perrin 		zil_commit(zd->zd_zilog, 0);
5795fa9e4066Sahrens 	}
5796fa9e4066Sahrens 
5797ea8dc4b6Seschrock 	txg_wait_synced(spa_get_dsl(spa), 0);
5798fa9e4066Sahrens 
5799b24ab676SJeff Bonwick 	/*
5800b24ab676SJeff Bonwick 	 * Freeze the pool.  This stops spa_sync() from doing anything,
5801b24ab676SJeff Bonwick 	 * so that the only way to record changes from now on is the ZIL.
5802b24ab676SJeff Bonwick 	 */
5803b24ab676SJeff Bonwick 	spa_freeze(spa);
5804e14bb325SJeff Bonwick 
58052a104a52SAlex Reece 	/*
58062a104a52SAlex Reece 	 * Because it is hard to predict how much space a write will actually
58072a104a52SAlex Reece 	 * require beforehand, we leave ourselves some fudge space to write over
58082a104a52SAlex Reece 	 * capacity.
58092a104a52SAlex Reece 	 */
58102a104a52SAlex Reece 	uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2;
58112a104a52SAlex Reece 
5812b24ab676SJeff Bonwick 	/*
5813b24ab676SJeff Bonwick 	 * Run tests that generate log records but don't alter the pool config
5814b24ab676SJeff Bonwick 	 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
5815b24ab676SJeff Bonwick 	 * We do a txg_wait_synced() after each iteration to force the txg
5816b24ab676SJeff Bonwick 	 * to increase well beyond the last synced value in the uberblock.
5817b24ab676SJeff Bonwick 	 * The ZIL should be OK with that.
58182a104a52SAlex Reece 	 *
58192a104a52SAlex Reece 	 * Run a random number of times less than zo_maxloops and ensure we do
58202a104a52SAlex Reece 	 * not run out of space on the pool.
5821b24ab676SJeff Bonwick 	 */
5822420dfc95SChris Siden 	while (ztest_random(10) != 0 &&
58232a104a52SAlex Reece 	    numloops++ < ztest_opts.zo_maxloops &&
58242a104a52SAlex Reece 	    metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) {
58252a104a52SAlex Reece 		ztest_od_t od;
58262a104a52SAlex Reece 		ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
58272a104a52SAlex Reece 		VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE));
58282a104a52SAlex Reece 		ztest_io(zd, od.od_object,
58292a104a52SAlex Reece 		    ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
5830b24ab676SJeff Bonwick 		txg_wait_synced(spa_get_dsl(spa), 0);
5831b24ab676SJeff Bonwick 	}
5832e14bb325SJeff Bonwick 
5833fa9e4066Sahrens 	/*
5834b24ab676SJeff Bonwick 	 * Commit all of the changes we just generated.
5835fa9e4066Sahrens 	 */
58365002558fSNeil Perrin 	zil_commit(zd->zd_zilog, 0);
5837b24ab676SJeff Bonwick 	txg_wait_synced(spa_get_dsl(spa), 0);
5838fa9e4066Sahrens 
5839b24ab676SJeff Bonwick 	/*
5840b24ab676SJeff Bonwick 	 * Close our dataset and close the pool.
5841b24ab676SJeff Bonwick 	 */
5842420dfc95SChris Siden 	ztest_dataset_close(0);
5843e05725b1Sbonwick 	spa_close(spa, FTAG);
5844b24ab676SJeff Bonwick 	kernel_fini();
5845e05725b1Sbonwick 
5846b24ab676SJeff Bonwick 	/*
5847b24ab676SJeff Bonwick 	 * Open and close the pool and dataset to induce log replay.
5848b24ab676SJeff Bonwick 	 */
5849b24ab676SJeff Bonwick 	kernel_init(FREAD | FWRITE);
5850b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5851ce636f8bSMatthew Ahrens 	ASSERT(spa_freeze_txg(spa) == UINT64_MAX);
5852b420f3adSRichard Lowe 	VERIFY3U(0, ==, ztest_dataset_open(0));
5853420dfc95SChris Siden 	ztest_dataset_close(0);
5854dfbb9432SGeorge Wilson 
5855dfbb9432SGeorge Wilson 	spa->spa_debug = B_TRUE;
5856dfbb9432SGeorge Wilson 	ztest_spa = spa;
5857dfbb9432SGeorge Wilson 	txg_wait_synced(spa_get_dsl(spa), 0);
5858dfbb9432SGeorge Wilson 	ztest_reguid(NULL, 0);
5859dfbb9432SGeorge Wilson 
5860b24ab676SJeff Bonwick 	spa_close(spa, FTAG);
5861fa9e4066Sahrens 	kernel_fini();
5862fa9e4066Sahrens }
5863fa9e4066Sahrens 
5864fa9e4066Sahrens void
5865fa9e4066Sahrens print_time(hrtime_t t, char *timebuf)
5866fa9e4066Sahrens {
5867fa9e4066Sahrens 	hrtime_t s = t / NANOSEC;
5868fa9e4066Sahrens 	hrtime_t m = s / 60;
5869fa9e4066Sahrens 	hrtime_t h = m / 60;
5870fa9e4066Sahrens 	hrtime_t d = h / 24;
5871fa9e4066Sahrens 
5872fa9e4066Sahrens 	s -= m * 60;
5873fa9e4066Sahrens 	m -= h * 60;
5874fa9e4066Sahrens 	h -= d * 24;
5875fa9e4066Sahrens 
5876fa9e4066Sahrens 	timebuf[0] = '\0';
5877fa9e4066Sahrens 
5878fa9e4066Sahrens 	if (d)
5879fa9e4066Sahrens 		(void) sprintf(timebuf,
5880fa9e4066Sahrens 		    "%llud%02lluh%02llum%02llus", d, h, m, s);
5881fa9e4066Sahrens 	else if (h)
5882fa9e4066Sahrens 		(void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s);
5883fa9e4066Sahrens 	else if (m)
5884fa9e4066Sahrens 		(void) sprintf(timebuf, "%llum%02llus", m, s);
5885fa9e4066Sahrens 	else
5886fa9e4066Sahrens 		(void) sprintf(timebuf, "%llus", s);
5887fa9e4066Sahrens }
5888fa9e4066Sahrens 
58891195e687SMark J Musante static nvlist_t *
58901195e687SMark J Musante make_random_props()
58911195e687SMark J Musante {
58921195e687SMark J Musante 	nvlist_t *props;
58931195e687SMark J Musante 
58941195e687SMark J Musante 	VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
5895ad135b5dSChristopher Siden 	if (ztest_random(2) == 0)
5896ad135b5dSChristopher Siden 		return (props);
58971195e687SMark J Musante 	VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0);
58981195e687SMark J Musante 
58991195e687SMark J Musante 	return (props);
59001195e687SMark J Musante }
59011195e687SMark J Musante 
5902fa9e4066Sahrens /*
5903fa9e4066Sahrens  * Create a storage pool with the given name and initial vdev size.
5904b24ab676SJeff Bonwick  * Then test spa_freeze() functionality.
5905fa9e4066Sahrens  */
5906fa9e4066Sahrens static void
5907b24ab676SJeff Bonwick ztest_init(ztest_shared_t *zs)
5908fa9e4066Sahrens {
5909fa9e4066Sahrens 	spa_t *spa;
59101195e687SMark J Musante 	nvlist_t *nvroot, *props;
5911fa9e4066Sahrens 
5912420dfc95SChris Siden 	VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0);
5913420dfc95SChris Siden 	VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0);
5914b24ab676SJeff Bonwick 
5915fa9e4066Sahrens 	kernel_init(FREAD | FWRITE);
5916fa9e4066Sahrens 
5917fa9e4066Sahrens 	/*
5918fa9e4066Sahrens 	 * Create the storage pool.
5919fa9e4066Sahrens 	 */
5920420dfc95SChris Siden 	(void) spa_destroy(ztest_opts.zo_pool);
592188ecc943SGeorge Wilson 	ztest_shared->zs_vdev_next_leaf = 0;
59221195e687SMark J Musante 	zs->zs_splits = 0;
5923420dfc95SChris Siden 	zs->zs_mirrors = ztest_opts.zo_mirrors;
592425345e46SGeorge Wilson 	nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
5925420dfc95SChris Siden 	    0, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
59261195e687SMark J Musante 	props = make_random_props();
5927ad135b5dSChristopher Siden 	for (int i = 0; i < SPA_FEATURES; i++) {
5928ad135b5dSChristopher Siden 		char buf[1024];
5929ad135b5dSChristopher Siden 		(void) snprintf(buf, sizeof (buf), "feature@%s",
5930ad135b5dSChristopher Siden 		    spa_feature_table[i].fi_uname);
5931b420f3adSRichard Lowe 		VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0));
5932ad135b5dSChristopher Siden 	}
5933b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL));
5934fa9e4066Sahrens 	nvlist_free(nvroot);
59351df447ebSRichard Yao 	nvlist_free(props);
5936fa9e4066Sahrens 
5937b420f3adSRichard Lowe 	VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5938420dfc95SChris Siden 	zs->zs_metaslab_sz =
5939420dfc95SChris Siden 	    1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
5940ad135b5dSChristopher Siden 
5941fa9e4066Sahrens 	spa_close(spa, FTAG);
5942fa9e4066Sahrens 
5943fa9e4066Sahrens 	kernel_fini();
5944b24ab676SJeff Bonwick 
5945420dfc95SChris Siden 	ztest_run_zdb(ztest_opts.zo_pool);
5946420dfc95SChris Siden 
5947420dfc95SChris Siden 	ztest_freeze();
5948420dfc95SChris Siden 
5949420dfc95SChris Siden 	ztest_run_zdb(ztest_opts.zo_pool);
5950420dfc95SChris Siden 
5951420dfc95SChris Siden 	(void) rwlock_destroy(&ztest_name_lock);
5952420dfc95SChris Siden 	(void) _mutex_destroy(&ztest_vdev_lock);
5953420dfc95SChris Siden }
5954420dfc95SChris Siden 
5955420dfc95SChris Siden static void
5956741652b0SEtienne Dechamps setup_data_fd(void)
5957420dfc95SChris Siden {
5958741652b0SEtienne Dechamps 	static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX";
5959420dfc95SChris Siden 
5960741652b0SEtienne Dechamps 	ztest_fd_data = mkstemp(ztest_name_data);
5961741652b0SEtienne Dechamps 	ASSERT3S(ztest_fd_data, >=, 0);
5962741652b0SEtienne Dechamps 	(void) unlink(ztest_name_data);
5963420dfc95SChris Siden }
5964420dfc95SChris Siden 
5965741652b0SEtienne Dechamps 
5966ad135b5dSChristopher Siden static int
5967ad135b5dSChristopher Siden shared_data_size(ztest_shared_hdr_t *hdr)
5968ad135b5dSChristopher Siden {
5969ad135b5dSChristopher Siden 	int size;
5970ad135b5dSChristopher Siden 
5971ad135b5dSChristopher Siden 	size = hdr->zh_hdr_size;
5972ad135b5dSChristopher Siden 	size += hdr->zh_opts_size;
5973ad135b5dSChristopher Siden 	size += hdr->zh_size;
5974ad135b5dSChristopher Siden 	size += hdr->zh_stats_size * hdr->zh_stats_count;
5975ad135b5dSChristopher Siden 	size += hdr->zh_ds_size * hdr->zh_ds_count;
5976ad135b5dSChristopher Siden 
5977ad135b5dSChristopher Siden 	return (size);
5978ad135b5dSChristopher Siden }
5979ad135b5dSChristopher Siden 
5980420dfc95SChris Siden static void
5981420dfc95SChris Siden setup_hdr(void)
5982420dfc95SChris Siden {
5983ad135b5dSChristopher Siden 	int size;
5984420dfc95SChris Siden 	ztest_shared_hdr_t *hdr;
5985420dfc95SChris Siden 
5986420dfc95SChris Siden 	hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
5987741652b0SEtienne Dechamps 	    PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
5988420dfc95SChris Siden 	ASSERT(hdr != MAP_FAILED);
5989420dfc95SChris Siden 
5990741652b0SEtienne Dechamps 	VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t)));
5991ad135b5dSChristopher Siden 
5992420dfc95SChris Siden 	hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t);
5993420dfc95SChris Siden 	hdr->zh_opts_size = sizeof (ztest_shared_opts_t);
5994420dfc95SChris Siden 	hdr->zh_size = sizeof (ztest_shared_t);
5995420dfc95SChris Siden 	hdr->zh_stats_size = sizeof (ztest_shared_callstate_t);
5996420dfc95SChris Siden 	hdr->zh_stats_count = ZTEST_FUNCS;
5997420dfc95SChris Siden 	hdr->zh_ds_size = sizeof (ztest_shared_ds_t);
5998420dfc95SChris Siden 	hdr->zh_ds_count = ztest_opts.zo_datasets;
5999420dfc95SChris Siden 
6000ad135b5dSChristopher Siden 	size = shared_data_size(hdr);
6001741652b0SEtienne Dechamps 	VERIFY3U(0, ==, ftruncate(ztest_fd_data, size));
6002ad135b5dSChristopher Siden 
6003420dfc95SChris Siden 	(void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
6004420dfc95SChris Siden }
6005420dfc95SChris Siden 
6006420dfc95SChris Siden static void
6007420dfc95SChris Siden setup_data(void)
6008420dfc95SChris Siden {
6009420dfc95SChris Siden 	int size, offset;
6010420dfc95SChris Siden 	ztest_shared_hdr_t *hdr;
6011420dfc95SChris Siden 	uint8_t *buf;
6012420dfc95SChris Siden 
6013420dfc95SChris Siden 	hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
6014741652b0SEtienne Dechamps 	    PROT_READ, MAP_SHARED, ztest_fd_data, 0);
6015420dfc95SChris Siden 	ASSERT(hdr != MAP_FAILED);
6016420dfc95SChris Siden 
6017ad135b5dSChristopher Siden 	size = shared_data_size(hdr);
6018420dfc95SChris Siden 
6019420dfc95SChris Siden 	(void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
6020420dfc95SChris Siden 	hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()),
6021741652b0SEtienne Dechamps 	    PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
6022420dfc95SChris Siden 	ASSERT(hdr != MAP_FAILED);
6023420dfc95SChris Siden 	buf = (uint8_t *)hdr;
6024420dfc95SChris Siden 
6025420dfc95SChris Siden 	offset = hdr->zh_hdr_size;
6026420dfc95SChris Siden 	ztest_shared_opts = (void *)&buf[offset];
6027420dfc95SChris Siden 	offset += hdr->zh_opts_size;
6028420dfc95SChris Siden 	ztest_shared = (void *)&buf[offset];
6029420dfc95SChris Siden 	offset += hdr->zh_size;
6030420dfc95SChris Siden 	ztest_shared_callstate = (void *)&buf[offset];
6031420dfc95SChris Siden 	offset += hdr->zh_stats_size * hdr->zh_stats_count;
6032420dfc95SChris Siden 	ztest_shared_ds = (void *)&buf[offset];
6033420dfc95SChris Siden }
6034420dfc95SChris Siden 
6035420dfc95SChris Siden static boolean_t
6036420dfc95SChris Siden exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
6037420dfc95SChris Siden {
6038420dfc95SChris Siden 	pid_t pid;
6039420dfc95SChris Siden 	int status;
6040741652b0SEtienne Dechamps 	char *cmdbuf = NULL;
6041420dfc95SChris Siden 
6042420dfc95SChris Siden 	pid = fork();
6043420dfc95SChris Siden 
6044420dfc95SChris Siden 	if (cmd == NULL) {
6045741652b0SEtienne Dechamps 		cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
6046741652b0SEtienne Dechamps 		(void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN);
6047420dfc95SChris Siden 		cmd = cmdbuf;
6048420dfc95SChris Siden 	}
6049b24ab676SJeff Bonwick 
6050420dfc95SChris Siden 	if (pid == -1)
6051420dfc95SChris Siden 		fatal(1, "fork failed");
6052b24ab676SJeff Bonwick 
6053420dfc95SChris Siden 	if (pid == 0) {	/* child */
6054420dfc95SChris Siden 		char *emptyargv[2] = { cmd, NULL };
6055741652b0SEtienne Dechamps 		char fd_data_str[12];
605626cb54a9SGeorge Wilson 
6057420dfc95SChris Siden 		struct rlimit rl = { 1024, 1024 };
6058420dfc95SChris Siden 		(void) setrlimit(RLIMIT_NOFILE, &rl);
6059741652b0SEtienne Dechamps 
6060741652b0SEtienne Dechamps 		(void) close(ztest_fd_rand);
6061741652b0SEtienne Dechamps 		VERIFY3U(11, >=,
6062741652b0SEtienne Dechamps 		    snprintf(fd_data_str, 12, "%d", ztest_fd_data));
6063741652b0SEtienne Dechamps 		VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
6064741652b0SEtienne Dechamps 
6065420dfc95SChris Siden 		(void) enable_extended_FILE_stdio(-1, -1);
6066420dfc95SChris Siden 		if (libpath != NULL)
6067420dfc95SChris Siden 			VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1));
6068420dfc95SChris Siden 		(void) execv(cmd, emptyargv);
6069420dfc95SChris Siden 		ztest_dump_core = B_FALSE;
6070420dfc95SChris Siden 		fatal(B_TRUE, "exec failed: %s", cmd);
6071420dfc95SChris Siden 	}
6072420dfc95SChris Siden 
6073741652b0SEtienne Dechamps 	if (cmdbuf != NULL) {
6074741652b0SEtienne Dechamps 		umem_free(cmdbuf, MAXPATHLEN);
6075741652b0SEtienne Dechamps 		cmd = NULL;
6076741652b0SEtienne Dechamps 	}
6077741652b0SEtienne Dechamps 
6078420dfc95SChris Siden 	while (waitpid(pid, &status, 0) != pid)
6079420dfc95SChris Siden 		continue;
6080420dfc95SChris Siden 	if (statusp != NULL)
6081420dfc95SChris Siden 		*statusp = status;
6082420dfc95SChris Siden 
6083420dfc95SChris Siden 	if (WIFEXITED(status)) {
6084420dfc95SChris Siden 		if (WEXITSTATUS(status) != 0) {
6085420dfc95SChris Siden 			(void) fprintf(stderr, "child exited with code %d\n",
6086420dfc95SChris Siden 			    WEXITSTATUS(status));
6087420dfc95SChris Siden 			exit(2);
6088420dfc95SChris Siden 		}
6089420dfc95SChris Siden 		return (B_FALSE);
6090420dfc95SChris Siden 	} else if (WIFSIGNALED(status)) {
6091420dfc95SChris Siden 		if (!ignorekill || WTERMSIG(status) != SIGKILL) {
6092420dfc95SChris Siden 			(void) fprintf(stderr, "child died with signal %d\n",
6093420dfc95SChris Siden 			    WTERMSIG(status));
6094420dfc95SChris Siden 			exit(3);
6095420dfc95SChris Siden 		}
6096420dfc95SChris Siden 		return (B_TRUE);
6097420dfc95SChris Siden 	} else {
6098420dfc95SChris Siden 		(void) fprintf(stderr, "something strange happened to child\n");
6099420dfc95SChris Siden 		exit(4);
6100420dfc95SChris Siden 		/* NOTREACHED */
6101420dfc95SChris Siden 	}
6102420dfc95SChris Siden }
6103420dfc95SChris Siden 
6104420dfc95SChris Siden static void
6105420dfc95SChris Siden ztest_run_init(void)
6106420dfc95SChris Siden {
6107420dfc95SChris Siden 	ztest_shared_t *zs = ztest_shared;
6108420dfc95SChris Siden 
6109420dfc95SChris Siden 	ASSERT(ztest_opts.zo_init != 0);
6110420dfc95SChris Siden 
6111420dfc95SChris Siden 	/*
6112420dfc95SChris Siden 	 * Blow away any existing copy of zpool.cache
6113420dfc95SChris Siden 	 */
6114420dfc95SChris Siden 	(void) remove(spa_config_path);
6115420dfc95SChris Siden 
6116420dfc95SChris Siden 	/*
6117420dfc95SChris Siden 	 * Create and initialize our storage pool.
6118420dfc95SChris Siden 	 */
6119420dfc95SChris Siden 	for (int i = 1; i <= ztest_opts.zo_init; i++) {
6120420dfc95SChris Siden 		bzero(zs, sizeof (ztest_shared_t));
6121420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 3 &&
6122420dfc95SChris Siden 		    ztest_opts.zo_init != 1) {
6123420dfc95SChris Siden 			(void) printf("ztest_init(), pass %d\n", i);
6124420dfc95SChris Siden 		}
6125420dfc95SChris Siden 		ztest_init(zs);
6126420dfc95SChris Siden 	}
6127fa9e4066Sahrens }
6128fa9e4066Sahrens 
6129fa9e4066Sahrens int
6130fa9e4066Sahrens main(int argc, char **argv)
6131fa9e4066Sahrens {
6132fa9e4066Sahrens 	int kills = 0;
6133fa9e4066Sahrens 	int iters = 0;
6134420dfc95SChris Siden 	int older = 0;
6135420dfc95SChris Siden 	int newer = 0;
6136fa9e4066Sahrens 	ztest_shared_t *zs;
6137fa9e4066Sahrens 	ztest_info_t *zi;
6138420dfc95SChris Siden 	ztest_shared_callstate_t *zc;
6139fa9e4066Sahrens 	char timebuf[100];
6140fa9e4066Sahrens 	char numbuf[6];
6141b24ab676SJeff Bonwick 	spa_t *spa;
6142741652b0SEtienne Dechamps 	char *cmd;
6143420dfc95SChris Siden 	boolean_t hasalt;
6144741652b0SEtienne Dechamps 	char *fd_data_str = getenv("ZTEST_FD_DATA");
6145fa9e4066Sahrens 
6146fa9e4066Sahrens 	(void) setvbuf(stdout, NULL, _IOLBF, 0);
6147fa9e4066Sahrens 
6148cd1c8b85SMatthew Ahrens 	dprintf_setup(&argc, argv);
614969962b56SMatthew Ahrens 	zfs_deadman_synctime_ms = 300000;
6150cd1c8b85SMatthew Ahrens 
6151741652b0SEtienne Dechamps 	ztest_fd_rand = open("/dev/urandom", O_RDONLY);
6152741652b0SEtienne Dechamps 	ASSERT3S(ztest_fd_rand, >=, 0);
6153741652b0SEtienne Dechamps 
6154741652b0SEtienne Dechamps 	if (!fd_data_str) {
6155420dfc95SChris Siden 		process_options(argc, argv);
6156fa9e4066Sahrens 
6157741652b0SEtienne Dechamps 		setup_data_fd();
6158420dfc95SChris Siden 		setup_hdr();
6159420dfc95SChris Siden 		setup_data();
6160420dfc95SChris Siden 		bcopy(&ztest_opts, ztest_shared_opts,
6161420dfc95SChris Siden 		    sizeof (*ztest_shared_opts));
6162420dfc95SChris Siden 	} else {
6163741652b0SEtienne Dechamps 		ztest_fd_data = atoi(fd_data_str);
6164420dfc95SChris Siden 		setup_data();
6165420dfc95SChris Siden 		bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts));
6166420dfc95SChris Siden 	}
6167420dfc95SChris Siden 	ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
6168fa9e4066Sahrens 
6169f0ba89beSJeff Bonwick 	/* Override location of zpool.cache */
6170741652b0SEtienne Dechamps 	VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache",
6171741652b0SEtienne Dechamps 	    ztest_opts.zo_dir), !=, -1);
6172f0ba89beSJeff Bonwick 
6173420dfc95SChris Siden 	ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t),
6174420dfc95SChris Siden 	    UMEM_NOFAIL);
6175420dfc95SChris Siden 	zs = ztest_shared;
6176ea8dc4b6Seschrock 
6177741652b0SEtienne Dechamps 	if (fd_data_str) {
6178420dfc95SChris Siden 		metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang;
6179420dfc95SChris Siden 		metaslab_df_alloc_threshold =
6180420dfc95SChris Siden 		    zs->zs_metaslab_df_alloc_threshold;
6181b24ab676SJeff Bonwick 
6182420dfc95SChris Siden 		if (zs->zs_do_init)
6183420dfc95SChris Siden 			ztest_run_init();
6184420dfc95SChris Siden 		else
6185420dfc95SChris Siden 			ztest_run(zs);
6186420dfc95SChris Siden 		exit(0);
6187420dfc95SChris Siden 	}
6188fa9e4066Sahrens 
6189420dfc95SChris Siden 	hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0);
6190420dfc95SChris Siden 
6191420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 1) {
6192fa9e4066Sahrens 		(void) printf("%llu vdevs, %d datasets, %d threads,"
6193fa9e4066Sahrens 		    " %llu seconds...\n",
6194420dfc95SChris Siden 		    (u_longlong_t)ztest_opts.zo_vdevs,
6195420dfc95SChris Siden 		    ztest_opts.zo_datasets,
6196420dfc95SChris Siden 		    ztest_opts.zo_threads,
6197420dfc95SChris Siden 		    (u_longlong_t)ztest_opts.zo_time);
6198fa9e4066Sahrens 	}
6199fa9e4066Sahrens 
6200741652b0SEtienne Dechamps 	cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL);
6201741652b0SEtienne Dechamps 	(void) strlcpy(cmd, getexecname(), MAXNAMELEN);
6202420dfc95SChris Siden 
6203420dfc95SChris Siden 	zs->zs_do_init = B_TRUE;
6204420dfc95SChris Siden 	if (strlen(ztest_opts.zo_alt_ztest) != 0) {
6205420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 1) {
6206420dfc95SChris Siden 			(void) printf("Executing older ztest for "
6207420dfc95SChris Siden 			    "initialization: %s\n", ztest_opts.zo_alt_ztest);
6208420dfc95SChris Siden 		}
6209420dfc95SChris Siden 		VERIFY(!exec_child(ztest_opts.zo_alt_ztest,
6210420dfc95SChris Siden 		    ztest_opts.zo_alt_libpath, B_FALSE, NULL));
6211420dfc95SChris Siden 	} else {
6212420dfc95SChris Siden 		VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL));
6213fa9e4066Sahrens 	}
6214420dfc95SChris Siden 	zs->zs_do_init = B_FALSE;
6215fa9e4066Sahrens 
6216b24ab676SJeff Bonwick 	zs->zs_proc_start = gethrtime();
6217420dfc95SChris Siden 	zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC;
6218fa9e4066Sahrens 
6219b24ab676SJeff Bonwick 	for (int f = 0; f < ZTEST_FUNCS; f++) {
6220420dfc95SChris Siden 		zi = &ztest_info[f];
6221420dfc95SChris Siden 		zc = ZTEST_GET_SHARED_CALLSTATE(f);
6222b24ab676SJeff Bonwick 		if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
6223420dfc95SChris Siden 			zc->zc_next = UINT64_MAX;
6224fa9e4066Sahrens 		else
6225420dfc95SChris Siden 			zc->zc_next = zs->zs_proc_start +
6226b24ab676SJeff Bonwick 			    ztest_random(2 * zi->zi_interval[0] + 1);
6227fa9e4066Sahrens 	}
6228fa9e4066Sahrens 
6229fa9e4066Sahrens 	/*
6230fa9e4066Sahrens 	 * Run the tests in a loop.  These tests include fault injection
6231fa9e4066Sahrens 	 * to verify that self-healing data works, and forced crashes
6232fa9e4066Sahrens 	 * to verify that we never lose on-disk consistency.
6233fa9e4066Sahrens 	 */
6234b24ab676SJeff Bonwick 	while (gethrtime() < zs->zs_proc_stop) {
6235fa9e4066Sahrens 		int status;
6236420dfc95SChris Siden 		boolean_t killed;
6237fa9e4066Sahrens 
6238fa9e4066Sahrens 		/*
6239fa9e4066Sahrens 		 * Initialize the workload counters for each function.
6240fa9e4066Sahrens 		 */
6241b24ab676SJeff Bonwick 		for (int f = 0; f < ZTEST_FUNCS; f++) {
6242420dfc95SChris Siden 			zc = ZTEST_GET_SHARED_CALLSTATE(f);
6243420dfc95SChris Siden 			zc->zc_count = 0;
6244420dfc95SChris Siden 			zc->zc_time = 0;
6245fa9e4066Sahrens 		}
6246fa9e4066Sahrens 
6247d6e555bdSGeorge Wilson 		/* Set the allocation switch size */
6248420dfc95SChris Siden 		zs->zs_metaslab_df_alloc_threshold =
6249420dfc95SChris Siden 		    ztest_random(zs->zs_metaslab_sz / 4) + 1;
6250fa9e4066Sahrens 
6251420dfc95SChris Siden 		if (!hasalt || ztest_random(2) == 0) {
6252420dfc95SChris Siden 			if (hasalt && ztest_opts.zo_verbose >= 1) {
6253420dfc95SChris Siden 				(void) printf("Executing newer ztest: %s\n",
6254420dfc95SChris Siden 				    cmd);
6255fa9e4066Sahrens 			}
6256420dfc95SChris Siden 			newer++;
6257420dfc95SChris Siden 			killed = exec_child(cmd, NULL, B_TRUE, &status);
62585ad82045Snd 		} else {
6259420dfc95SChris Siden 			if (hasalt && ztest_opts.zo_verbose >= 1) {
6260420dfc95SChris Siden 				(void) printf("Executing older ztest: %s\n",
6261420dfc95SChris Siden 				    ztest_opts.zo_alt_ztest);
6262420dfc95SChris Siden 			}
6263420dfc95SChris Siden 			older++;
6264420dfc95SChris Siden 			killed = exec_child(ztest_opts.zo_alt_ztest,
6265420dfc95SChris Siden 			    ztest_opts.zo_alt_libpath, B_TRUE, &status);
6266fa9e4066Sahrens 		}
6267fa9e4066Sahrens 
6268420dfc95SChris Siden 		if (killed)
6269420dfc95SChris Siden 			kills++;
6270fa9e4066Sahrens 		iters++;
6271fa9e4066Sahrens 
6272420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 1) {
6273fa9e4066Sahrens 			hrtime_t now = gethrtime();
6274fa9e4066Sahrens 
6275b24ab676SJeff Bonwick 			now = MIN(now, zs->zs_proc_stop);
6276b24ab676SJeff Bonwick 			print_time(zs->zs_proc_stop - now, timebuf);
6277fa9e4066Sahrens 			nicenum(zs->zs_space, numbuf);
6278fa9e4066Sahrens 
6279fa9e4066Sahrens 			(void) printf("Pass %3d, %8s, %3llu ENOSPC, "
6280fa9e4066Sahrens 			    "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
6281fa9e4066Sahrens 			    iters,
6282fa9e4066Sahrens 			    WIFEXITED(status) ? "Complete" : "SIGKILL",
6283fa9e4066Sahrens 			    (u_longlong_t)zs->zs_enospc_count,
6284fa9e4066Sahrens 			    100.0 * zs->zs_alloc / zs->zs_space,
6285fa9e4066Sahrens 			    numbuf,
6286b24ab676SJeff Bonwick 			    100.0 * (now - zs->zs_proc_start) /
6287420dfc95SChris Siden 			    (ztest_opts.zo_time * NANOSEC), timebuf);
6288fa9e4066Sahrens 		}
6289fa9e4066Sahrens 
6290420dfc95SChris Siden 		if (ztest_opts.zo_verbose >= 2) {
6291fa9e4066Sahrens 			(void) printf("\nWorkload summary:\n\n");
6292fa9e4066Sahrens 			(void) printf("%7s %9s   %s\n",
6293fa9e4066Sahrens 			    "Calls", "Time", "Function");
6294fa9e4066Sahrens 			(void) printf("%7s %9s   %s\n",
6295fa9e4066Sahrens 			    "-----", "----", "--------");
6296b24ab676SJeff Bonwick 			for (int f = 0; f < ZTEST_FUNCS; f++) {
6297fa9e4066Sahrens 				Dl_info dli;
6298fa9e4066Sahrens 
6299420dfc95SChris Siden 				zi = &ztest_info[f];
6300420dfc95SChris Siden 				zc = ZTEST_GET_SHARED_CALLSTATE(f);
6301420dfc95SChris Siden 				print_time(zc->zc_time, timebuf);
6302fa9e4066Sahrens 				(void) dladdr((void *)zi->zi_func, &dli);
6303fa9e4066Sahrens 				(void) printf("%7llu %9s   %s\n",
6304420dfc95SChris Siden 				    (u_longlong_t)zc->zc_count, timebuf,
6305fa9e4066Sahrens 				    dli.dli_sname);
6306fa9e4066Sahrens 			}
6307fa9e4066Sahrens 			(void) printf("\n");
6308fa9e4066Sahrens 		}
6309fa9e4066Sahrens 
6310fa9e4066Sahrens 		/*
6311b24ab676SJeff Bonwick 		 * It's possible that we killed a child during a rename test,
6312b24ab676SJeff Bonwick 		 * in which case we'll have a 'ztest_tmp' pool lying around
6313b24ab676SJeff Bonwick 		 * instead of 'ztest'.  Do a blind rename in case this happened.
6314fa9e4066Sahrens 		 */
6315b24ab676SJeff Bonwick 		kernel_init(FREAD);
6316420dfc95SChris Siden 		if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) {
6317b24ab676SJeff Bonwick 			spa_close(spa, FTAG);
6318b24ab676SJeff Bonwick 		} else {
6319b24ab676SJeff Bonwick 			char tmpname[MAXNAMELEN];
6320b24ab676SJeff Bonwick 			kernel_fini();
6321b24ab676SJeff Bonwick 			kernel_init(FREAD | FWRITE);
6322b24ab676SJeff Bonwick 			(void) snprintf(tmpname, sizeof (tmpname), "%s_tmp",
6323420dfc95SChris Siden 			    ztest_opts.zo_pool);
6324420dfc95SChris Siden 			(void) spa_rename(tmpname, ztest_opts.zo_pool);
6325b24ab676SJeff Bonwick 		}
6326fa9e4066Sahrens 		kernel_fini();
6327fa9e4066Sahrens 
6328420dfc95SChris Siden 		ztest_run_zdb(ztest_opts.zo_pool);
6329b24ab676SJeff Bonwick 	}
6330fa9e4066Sahrens 
6331420dfc95SChris Siden 	if (ztest_opts.zo_verbose >= 1) {
6332420dfc95SChris Siden 		if (hasalt) {
6333420dfc95SChris Siden 			(void) printf("%d runs of older ztest: %s\n", older,
6334420dfc95SChris Siden 			    ztest_opts.zo_alt_ztest);
6335420dfc95SChris Siden 			(void) printf("%d runs of newer ztest: %s\n", newer,
6336420dfc95SChris Siden 			    cmd);
6337420dfc95SChris Siden 		}
6338fa9e4066Sahrens 		(void) printf("%d killed, %d completed, %.0f%% kill rate\n",
6339fa9e4066Sahrens 		    kills, iters - kills, (100.0 * kills) / MAX(1, iters));
6340fa9e4066Sahrens 	}
6341fa9e4066Sahrens 
6342741652b0SEtienne Dechamps 	umem_free(cmd, MAXNAMELEN);
6343741652b0SEtienne Dechamps 
6344fa9e4066Sahrens 	return (0);
6345fa9e4066Sahrens }
6346