1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2013 Steven Hartland. All rights reserved.
26 * Copyright (c) 2014 Integros [integros.com]
27 * Copyright 2017 Joyent, Inc.
28 * Copyright (c) 2017, Intel Corporation.
29 * Copyright 2017 RackTop Systems.
30 */
31
32 /*
33 * The objective of this program is to provide a DMU/ZAP/SPA stress test
34 * that runs entirely in userland, is easy to use, and easy to extend.
35 *
36 * The overall design of the ztest program is as follows:
37 *
38 * (1) For each major functional area (e.g. adding vdevs to a pool,
39 * creating and destroying datasets, reading and writing objects, etc)
40 * we have a simple routine to test that functionality. These
41 * individual routines do not have to do anything "stressful".
42 *
43 * (2) We turn these simple functionality tests into a stress test by
44 * running them all in parallel, with as many threads as desired,
45 * and spread across as many datasets, objects, and vdevs as desired.
46 *
47 * (3) While all this is happening, we inject faults into the pool to
48 * verify that self-healing data really works.
49 *
50 * (4) Every time we open a dataset, we change its checksum and compression
51 * functions. Thus even individual objects vary from block to block
52 * in which checksum they use and whether they're compressed.
53 *
54 * (5) To verify that we never lose on-disk consistency after a crash,
55 * we run the entire test in a child of the main process.
56 * At random times, the child self-immolates with a SIGKILL.
57 * This is the software equivalent of pulling the power cord.
58 * The parent then runs the test again, using the existing
59 * storage pool, as many times as desired. If backwards compatibility
60 * testing is enabled ztest will sometimes run the "older" version
61 * of ztest after a SIGKILL.
62 *
63 * (6) To verify that we don't have future leaks or temporal incursions,
64 * many of the functional tests record the transaction group number
65 * as part of their data. When reading old data, they verify that
66 * the transaction group number is less than the current, open txg.
67 * If you add a new test, please do this if applicable.
68 *
69 * When run with no arguments, ztest runs for about five minutes and
70 * produces no output if successful. To get a little bit of information,
71 * specify -V. To get more information, specify -VV, and so on.
72 *
73 * To turn this into an overnight stress test, use -T to specify run time.
74 *
75 * You can ask more more vdevs [-v], datasets [-d], or threads [-t]
76 * to increase the pool capacity, fanout, and overall stress level.
77 *
78 * Use the -k option to set the desired frequency of kills.
79 *
80 * When ztest invokes itself it passes all relevant information through a
81 * temporary file which is mmap-ed in the child process. This allows shared
82 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always
83 * stored at offset 0 of this file and contains information on the size and
84 * number of shared structures in the file. The information stored in this file
85 * must remain backwards compatible with older versions of ztest so that
86 * ztest can invoke them during backwards compatibility testing (-B).
87 */
88
89 #include <sys/zfs_context.h>
90 #include <sys/spa.h>
91 #include <sys/dmu.h>
92 #include <sys/txg.h>
93 #include <sys/dbuf.h>
94 #include <sys/zap.h>
95 #include <sys/dmu_objset.h>
96 #include <sys/poll.h>
97 #include <sys/stat.h>
98 #include <sys/time.h>
99 #include <sys/wait.h>
100 #include <sys/mman.h>
101 #include <sys/resource.h>
102 #include <sys/zio.h>
103 #include <sys/zil.h>
104 #include <sys/zil_impl.h>
105 #include <sys/vdev_impl.h>
106 #include <sys/vdev_file.h>
107 #include <sys/vdev_initialize.h>
108 #include <sys/vdev_trim.h>
109 #include <sys/spa_impl.h>
110 #include <sys/metaslab_impl.h>
111 #include <sys/dsl_prop.h>
112 #include <sys/dsl_dataset.h>
113 #include <sys/dsl_destroy.h>
114 #include <sys/dsl_scan.h>
115 #include <sys/zio_checksum.h>
116 #include <sys/refcount.h>
117 #include <sys/zfeature.h>
118 #include <sys/dsl_userhold.h>
119 #include <sys/abd.h>
120 #include <stdio.h>
121 #include <stdio_ext.h>
122 #include <stdlib.h>
123 #include <unistd.h>
124 #include <signal.h>
125 #include <umem.h>
126 #include <dlfcn.h>
127 #include <ctype.h>
128 #include <math.h>
129 #include <sys/fs/zfs.h>
130 #include <libnvpair.h>
131 #include <libzutil.h>
132 #include <libcmdutils.h>
133
134 static int ztest_fd_data = -1;
135 static int ztest_fd_rand = -1;
136
137 typedef struct ztest_shared_hdr {
138 uint64_t zh_hdr_size;
139 uint64_t zh_opts_size;
140 uint64_t zh_size;
141 uint64_t zh_stats_size;
142 uint64_t zh_stats_count;
143 uint64_t zh_ds_size;
144 uint64_t zh_ds_count;
145 } ztest_shared_hdr_t;
146
147 static ztest_shared_hdr_t *ztest_shared_hdr;
148
149 enum ztest_class_state {
150 ZTEST_VDEV_CLASS_OFF,
151 ZTEST_VDEV_CLASS_ON,
152 ZTEST_VDEV_CLASS_RND
153 };
154
155 typedef struct ztest_shared_opts {
156 char zo_pool[ZFS_MAX_DATASET_NAME_LEN];
157 char zo_dir[ZFS_MAX_DATASET_NAME_LEN];
158 char zo_alt_ztest[MAXNAMELEN];
159 char zo_alt_libpath[MAXNAMELEN];
160 uint64_t zo_vdevs;
161 uint64_t zo_vdevtime;
162 size_t zo_vdev_size;
163 int zo_ashift;
164 int zo_mirrors;
165 int zo_raidz;
166 int zo_raidz_parity;
167 int zo_datasets;
168 int zo_threads;
169 uint64_t zo_passtime;
170 uint64_t zo_killrate;
171 int zo_verbose;
172 int zo_init;
173 uint64_t zo_time;
174 uint64_t zo_maxloops;
175 uint64_t zo_metaslab_force_ganging;
176 int zo_mmp_test;
177 int zo_special_vdevs;
178 } ztest_shared_opts_t;
179
180 static const ztest_shared_opts_t ztest_opts_defaults = {
181 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' },
182 .zo_dir = { '/', 't', 'm', 'p', '\0' },
183 .zo_alt_ztest = { '\0' },
184 .zo_alt_libpath = { '\0' },
185 .zo_vdevs = 5,
186 .zo_ashift = SPA_MINBLOCKSHIFT,
187 .zo_mirrors = 2,
188 .zo_raidz = 4,
189 .zo_raidz_parity = 1,
190 .zo_vdev_size = SPA_MINDEVSIZE * 4, /* 256m default size */
191 .zo_datasets = 7,
192 .zo_threads = 23,
193 .zo_passtime = 60, /* 60 seconds */
194 .zo_killrate = 70, /* 70% kill rate */
195 .zo_verbose = 0,
196 .zo_mmp_test = 0,
197 .zo_init = 1,
198 .zo_time = 300, /* 5 minutes */
199 .zo_maxloops = 50, /* max loops during spa_freeze() */
200 .zo_metaslab_force_ganging = 32 << 10,
201 .zo_special_vdevs = ZTEST_VDEV_CLASS_RND,
202 };
203
204 extern uint64_t metaslab_force_ganging;
205 extern uint64_t metaslab_df_alloc_threshold;
206 extern uint64_t zfs_deadman_synctime_ms;
207 extern int metaslab_preload_limit;
208 extern boolean_t zfs_compressed_arc_enabled;
209 extern boolean_t zfs_abd_scatter_enabled;
210 extern int dmu_object_alloc_chunk_shift;
211 extern boolean_t zfs_force_some_double_word_sm_entries;
212 extern unsigned long zfs_reconstruct_indirect_damage_fraction;
213
214 static ztest_shared_opts_t *ztest_shared_opts;
215 static ztest_shared_opts_t ztest_opts;
216 static char *ztest_wkeydata = "abcdefghijklmnopqrstuvwxyz012345";
217
218 typedef struct ztest_shared_ds {
219 uint64_t zd_seq;
220 } ztest_shared_ds_t;
221
222 static ztest_shared_ds_t *ztest_shared_ds;
223 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d])
224
225 #define BT_MAGIC 0x123456789abcdefULL
226 #define MAXFAULTS() \
227 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1)
228
229 enum ztest_io_type {
230 ZTEST_IO_WRITE_TAG,
231 ZTEST_IO_WRITE_PATTERN,
232 ZTEST_IO_WRITE_ZEROES,
233 ZTEST_IO_TRUNCATE,
234 ZTEST_IO_SETATTR,
235 ZTEST_IO_REWRITE,
236 ZTEST_IO_TYPES
237 };
238
239 typedef struct ztest_block_tag {
240 uint64_t bt_magic;
241 uint64_t bt_objset;
242 uint64_t bt_object;
243 uint64_t bt_dnodesize;
244 uint64_t bt_offset;
245 uint64_t bt_gen;
246 uint64_t bt_txg;
247 uint64_t bt_crtxg;
248 } ztest_block_tag_t;
249
250 typedef struct bufwad {
251 uint64_t bw_index;
252 uint64_t bw_txg;
253 uint64_t bw_data;
254 } bufwad_t;
255
256 /*
257 * It would be better to use a rangelock_t per object. Unfortunately
258 * the rangelock_t is not a drop-in replacement for rl_t, because we
259 * still need to map from object ID to rangelock_t.
260 */
261 typedef enum {
262 RL_READER,
263 RL_WRITER,
264 RL_APPEND
265 } rl_type_t;
266
267 typedef struct rll {
268 void *rll_writer;
269 int rll_readers;
270 kmutex_t rll_lock;
271 kcondvar_t rll_cv;
272 } rll_t;
273
274 typedef struct rl {
275 uint64_t rl_object;
276 uint64_t rl_offset;
277 uint64_t rl_size;
278 rll_t *rl_lock;
279 } rl_t;
280
281 #define ZTEST_RANGE_LOCKS 64
282 #define ZTEST_OBJECT_LOCKS 64
283
284 /*
285 * Object descriptor. Used as a template for object lookup/create/remove.
286 */
287 typedef struct ztest_od {
288 uint64_t od_dir;
289 uint64_t od_object;
290 dmu_object_type_t od_type;
291 dmu_object_type_t od_crtype;
292 uint64_t od_blocksize;
293 uint64_t od_crblocksize;
294 uint64_t od_crdnodesize;
295 uint64_t od_gen;
296 uint64_t od_crgen;
297 char od_name[ZFS_MAX_DATASET_NAME_LEN];
298 } ztest_od_t;
299
300 /*
301 * Per-dataset state.
302 */
303 typedef struct ztest_ds {
304 ztest_shared_ds_t *zd_shared;
305 objset_t *zd_os;
306 krwlock_t zd_zilog_lock;
307 zilog_t *zd_zilog;
308 ztest_od_t *zd_od; /* debugging aid */
309 char zd_name[ZFS_MAX_DATASET_NAME_LEN];
310 kmutex_t zd_dirobj_lock;
311 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS];
312 rll_t zd_range_lock[ZTEST_RANGE_LOCKS];
313 } ztest_ds_t;
314
315 /*
316 * Per-iteration state.
317 */
318 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
319
320 typedef struct ztest_info {
321 ztest_func_t *zi_func; /* test function */
322 uint64_t zi_iters; /* iterations per execution */
323 uint64_t *zi_interval; /* execute every <interval> seconds */
324 } ztest_info_t;
325
326 typedef struct ztest_shared_callstate {
327 uint64_t zc_count; /* per-pass count */
328 uint64_t zc_time; /* per-pass time */
329 uint64_t zc_next; /* next time to call this function */
330 } ztest_shared_callstate_t;
331
332 static ztest_shared_callstate_t *ztest_shared_callstate;
333 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c])
334
335 /*
336 * Note: these aren't static because we want dladdr() to work.
337 */
338 ztest_func_t ztest_dmu_read_write;
339 ztest_func_t ztest_dmu_write_parallel;
340 ztest_func_t ztest_dmu_object_alloc_free;
341 ztest_func_t ztest_dmu_object_next_chunk;
342 ztest_func_t ztest_dmu_commit_callbacks;
343 ztest_func_t ztest_zap;
344 ztest_func_t ztest_zap_parallel;
345 ztest_func_t ztest_zil_commit;
346 ztest_func_t ztest_zil_remount;
347 ztest_func_t ztest_dmu_read_write_zcopy;
348 ztest_func_t ztest_dmu_objset_create_destroy;
349 ztest_func_t ztest_dmu_prealloc;
350 ztest_func_t ztest_fzap;
351 ztest_func_t ztest_dmu_snapshot_create_destroy;
352 ztest_func_t ztest_dsl_prop_get_set;
353 ztest_func_t ztest_spa_prop_get_set;
354 ztest_func_t ztest_spa_create_destroy;
355 ztest_func_t ztest_fault_inject;
356 ztest_func_t ztest_ddt_repair;
357 ztest_func_t ztest_dmu_snapshot_hold;
358 ztest_func_t ztest_mmp_enable_disable;
359 ztest_func_t ztest_scrub;
360 ztest_func_t ztest_dsl_dataset_promote_busy;
361 ztest_func_t ztest_vdev_attach_detach;
362 ztest_func_t ztest_vdev_LUN_growth;
363 ztest_func_t ztest_vdev_add_remove;
364 ztest_func_t ztest_vdev_class_add;
365 ztest_func_t ztest_vdev_aux_add_remove;
366 ztest_func_t ztest_split_pool;
367 ztest_func_t ztest_reguid;
368 ztest_func_t ztest_spa_upgrade;
369 ztest_func_t ztest_device_removal;
370 ztest_func_t ztest_remap_blocks;
371 ztest_func_t ztest_spa_checkpoint_create_discard;
372 ztest_func_t ztest_initialize;
373 ztest_func_t ztest_trim;
374 ztest_func_t ztest_verify_dnode_bt;
375
376 uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
377 uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */
378 uint64_t zopt_often = 1ULL * NANOSEC; /* every second */
379 uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */
380 uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */
381
382 ztest_info_t ztest_info[] = {
383 { ztest_dmu_read_write, 1, &zopt_always },
384 { ztest_dmu_write_parallel, 10, &zopt_always },
385 { ztest_dmu_object_alloc_free, 1, &zopt_always },
386 { ztest_dmu_object_next_chunk, 1, &zopt_sometimes },
387 { ztest_dmu_commit_callbacks, 1, &zopt_always },
388 { ztest_zap, 30, &zopt_always },
389 { ztest_zap_parallel, 100, &zopt_always },
390 { ztest_split_pool, 1, &zopt_always },
391 { ztest_zil_commit, 1, &zopt_incessant },
392 { ztest_zil_remount, 1, &zopt_sometimes },
393 { ztest_dmu_read_write_zcopy, 1, &zopt_often },
394 { ztest_dmu_objset_create_destroy, 1, &zopt_often },
395 { ztest_dsl_prop_get_set, 1, &zopt_often },
396 { ztest_spa_prop_get_set, 1, &zopt_sometimes },
397 #if 0
398 { ztest_dmu_prealloc, 1, &zopt_sometimes },
399 #endif
400 { ztest_fzap, 1, &zopt_sometimes },
401 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes },
402 { ztest_spa_create_destroy, 1, &zopt_sometimes },
403 { ztest_fault_inject, 1, &zopt_incessant },
404 { ztest_ddt_repair, 1, &zopt_sometimes },
405 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes },
406 { ztest_mmp_enable_disable, 1, &zopt_sometimes },
407 { ztest_reguid, 1, &zopt_rarely },
408 { ztest_scrub, 1, &zopt_often },
409 { ztest_spa_upgrade, 1, &zopt_rarely },
410 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely },
411 { ztest_vdev_attach_detach, 1, &zopt_incessant },
412 { ztest_vdev_LUN_growth, 1, &zopt_rarely },
413 { ztest_vdev_add_remove, 1,
414 &ztest_opts.zo_vdevtime },
415 { ztest_vdev_class_add, 1,
416 &ztest_opts.zo_vdevtime },
417 { ztest_vdev_aux_add_remove, 1,
418 &ztest_opts.zo_vdevtime },
419 { ztest_device_removal, 1, &zopt_sometimes },
420 { ztest_remap_blocks, 1, &zopt_sometimes },
421 { ztest_spa_checkpoint_create_discard, 1, &zopt_rarely },
422 { ztest_initialize, 1, &zopt_sometimes },
423 { ztest_trim, 1, &zopt_sometimes },
424 { ztest_verify_dnode_bt, 1, &zopt_sometimes }
425 };
426
427 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t))
428
429 /*
430 * The following struct is used to hold a list of uncalled commit callbacks.
431 * The callbacks are ordered by txg number.
432 */
433 typedef struct ztest_cb_list {
434 kmutex_t zcl_callbacks_lock;
435 list_t zcl_callbacks;
436 } ztest_cb_list_t;
437
438 /*
439 * Stuff we need to share writably between parent and child.
440 */
441 typedef struct ztest_shared {
442 boolean_t zs_do_init;
443 hrtime_t zs_proc_start;
444 hrtime_t zs_proc_stop;
445 hrtime_t zs_thread_start;
446 hrtime_t zs_thread_stop;
447 hrtime_t zs_thread_kill;
448 uint64_t zs_enospc_count;
449 uint64_t zs_vdev_next_leaf;
450 uint64_t zs_vdev_aux;
451 uint64_t zs_alloc;
452 uint64_t zs_space;
453 uint64_t zs_splits;
454 uint64_t zs_mirrors;
455 uint64_t zs_metaslab_sz;
456 uint64_t zs_metaslab_df_alloc_threshold;
457 uint64_t zs_guid;
458 } ztest_shared_t;
459
460 #define ID_PARALLEL -1ULL
461
462 static char ztest_dev_template[] = "%s/%s.%llua";
463 static char ztest_aux_template[] = "%s/%s.%s.%llu";
464 ztest_shared_t *ztest_shared;
465
466 static spa_t *ztest_spa = NULL;
467 static ztest_ds_t *ztest_ds;
468
469 static kmutex_t ztest_vdev_lock;
470 static boolean_t ztest_device_removal_active = B_FALSE;
471 static kmutex_t ztest_checkpoint_lock;
472
473 /*
474 * The ztest_name_lock protects the pool and dataset namespace used by
475 * the individual tests. To modify the namespace, consumers must grab
476 * this lock as writer. Grabbing the lock as reader will ensure that the
477 * namespace does not change while the lock is held.
478 */
479 static krwlock_t ztest_name_lock;
480
481 static boolean_t ztest_dump_core = B_TRUE;
482 static boolean_t ztest_exiting;
483
484 /* Global commit callback list */
485 static ztest_cb_list_t zcl;
486
487 enum ztest_object {
488 ZTEST_META_DNODE = 0,
489 ZTEST_DIROBJ,
490 ZTEST_OBJECTS
491 };
492
493 static void usage(boolean_t) __NORETURN;
494
495 /*
496 * These libumem hooks provide a reasonable set of defaults for the allocator's
497 * debugging facilities.
498 */
499 const char *
_umem_debug_init()500 _umem_debug_init()
501 {
502 return ("default,verbose"); /* $UMEM_DEBUG setting */
503 }
504
505 const char *
_umem_logging_init(void)506 _umem_logging_init(void)
507 {
508 return ("fail,contents"); /* $UMEM_LOGGING setting */
509 }
510
511 #define FATAL_MSG_SZ 1024
512
513 char *fatal_msg;
514
515 static void
fatal(int do_perror,char * message,...)516 fatal(int do_perror, char *message, ...)
517 {
518 va_list args;
519 int save_errno = errno;
520 char buf[FATAL_MSG_SZ];
521
522 (void) fflush(stdout);
523
524 va_start(args, message);
525 (void) sprintf(buf, "ztest: ");
526 /* LINTED */
527 (void) vsprintf(buf + strlen(buf), message, args);
528 va_end(args);
529 if (do_perror) {
530 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf),
531 ": %s", strerror(save_errno));
532 }
533 (void) fprintf(stderr, "%s\n", buf);
534 fatal_msg = buf; /* to ease debugging */
535 if (ztest_dump_core)
536 abort();
537 exit(3);
538 }
539
540 static int
str2shift(const char * buf)541 str2shift(const char *buf)
542 {
543 const char *ends = "BKMGTPEZ";
544 int i;
545
546 if (buf[0] == '\0')
547 return (0);
548 for (i = 0; i < strlen(ends); i++) {
549 if (toupper(buf[0]) == ends[i])
550 break;
551 }
552 if (i == strlen(ends)) {
553 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n",
554 buf);
555 usage(B_FALSE);
556 }
557 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) {
558 return (10*i);
559 }
560 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf);
561 usage(B_FALSE);
562 /* NOTREACHED */
563 }
564
565 static uint64_t
nicenumtoull(const char * buf)566 nicenumtoull(const char *buf)
567 {
568 char *end;
569 uint64_t val;
570
571 val = strtoull(buf, &end, 0);
572 if (end == buf) {
573 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf);
574 usage(B_FALSE);
575 } else if (end[0] == '.') {
576 double fval = strtod(buf, &end);
577 fval *= pow(2, str2shift(end));
578 if (fval > UINT64_MAX) {
579 (void) fprintf(stderr, "ztest: value too large: %s\n",
580 buf);
581 usage(B_FALSE);
582 }
583 val = (uint64_t)fval;
584 } else {
585 int shift = str2shift(end);
586 if (shift >= 64 || (val << shift) >> shift != val) {
587 (void) fprintf(stderr, "ztest: value too large: %s\n",
588 buf);
589 usage(B_FALSE);
590 }
591 val <<= shift;
592 }
593 return (val);
594 }
595
596 static void
usage(boolean_t requested)597 usage(boolean_t requested)
598 {
599 const ztest_shared_opts_t *zo = &ztest_opts_defaults;
600
601 char nice_vdev_size[NN_NUMBUF_SZ];
602 char nice_force_ganging[NN_NUMBUF_SZ];
603 FILE *fp = requested ? stdout : stderr;
604
605 nicenum(zo->zo_vdev_size, nice_vdev_size, sizeof (nice_vdev_size));
606 nicenum(zo->zo_metaslab_force_ganging, nice_force_ganging,
607 sizeof (nice_force_ganging));
608
609 (void) fprintf(fp, "Usage: %s\n"
610 "\t[-v vdevs (default: %llu)]\n"
611 "\t[-s size_of_each_vdev (default: %s)]\n"
612 "\t[-a alignment_shift (default: %d)] use 0 for random\n"
613 "\t[-m mirror_copies (default: %d)]\n"
614 "\t[-r raidz_disks (default: %d)]\n"
615 "\t[-R raidz_parity (default: %d)]\n"
616 "\t[-d datasets (default: %d)]\n"
617 "\t[-t threads (default: %d)]\n"
618 "\t[-g gang_block_threshold (default: %s)]\n"
619 "\t[-i init_count (default: %d)] initialize pool i times\n"
620 "\t[-k kill_percentage (default: %llu%%)]\n"
621 "\t[-p pool_name (default: %s)]\n"
622 "\t[-f dir (default: %s)] file directory for vdev files\n"
623 "\t[-M] Multi-host simulate pool imported on remote host\n"
624 "\t[-V] verbose (use multiple times for ever more blather)\n"
625 "\t[-E] use existing pool instead of creating new one\n"
626 "\t[-T time (default: %llu sec)] total run time\n"
627 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n"
628 "\t[-P passtime (default: %llu sec)] time per pass\n"
629 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n"
630 "\t[-C vdev class state (default: random)] special=on|off|random\n"
631 "\t[-o variable=value] ... set global variable to an unsigned\n"
632 "\t 32-bit integer value\n"
633 "\t[-h] (print help)\n"
634 "",
635 zo->zo_pool,
636 (u_longlong_t)zo->zo_vdevs, /* -v */
637 nice_vdev_size, /* -s */
638 zo->zo_ashift, /* -a */
639 zo->zo_mirrors, /* -m */
640 zo->zo_raidz, /* -r */
641 zo->zo_raidz_parity, /* -R */
642 zo->zo_datasets, /* -d */
643 zo->zo_threads, /* -t */
644 nice_force_ganging, /* -g */
645 zo->zo_init, /* -i */
646 (u_longlong_t)zo->zo_killrate, /* -k */
647 zo->zo_pool, /* -p */
648 zo->zo_dir, /* -f */
649 (u_longlong_t)zo->zo_time, /* -T */
650 (u_longlong_t)zo->zo_maxloops, /* -F */
651 (u_longlong_t)zo->zo_passtime);
652 exit(requested ? 0 : 1);
653 }
654
655
656 static void
ztest_parse_name_value(const char * input,ztest_shared_opts_t * zo)657 ztest_parse_name_value(const char *input, ztest_shared_opts_t *zo)
658 {
659 char name[32];
660 char *value;
661 int state = ZTEST_VDEV_CLASS_RND;
662
663 (void) strlcpy(name, input, sizeof (name));
664
665 value = strchr(name, '=');
666 if (value == NULL) {
667 (void) fprintf(stderr, "missing value in property=value "
668 "'-C' argument (%s)\n", input);
669 usage(B_FALSE);
670 }
671 *(value) = '\0';
672 value++;
673
674 if (strcmp(value, "on") == 0) {
675 state = ZTEST_VDEV_CLASS_ON;
676 } else if (strcmp(value, "off") == 0) {
677 state = ZTEST_VDEV_CLASS_OFF;
678 } else if (strcmp(value, "random") == 0) {
679 state = ZTEST_VDEV_CLASS_RND;
680 } else {
681 (void) fprintf(stderr, "invalid property value '%s'\n", value);
682 usage(B_FALSE);
683 }
684
685 if (strcmp(name, "special") == 0) {
686 zo->zo_special_vdevs = state;
687 } else {
688 (void) fprintf(stderr, "invalid property name '%s'\n", name);
689 usage(B_FALSE);
690 }
691 if (zo->zo_verbose >= 3)
692 (void) printf("%s vdev state is '%s'\n", name, value);
693 }
694
695 static void
process_options(int argc,char ** argv)696 process_options(int argc, char **argv)
697 {
698 char *path;
699 ztest_shared_opts_t *zo = &ztest_opts;
700
701 int opt;
702 uint64_t value;
703 char altdir[MAXNAMELEN] = { 0 };
704
705 bcopy(&ztest_opts_defaults, zo, sizeof (*zo));
706
707 while ((opt = getopt(argc, argv,
708 "v:s:a:m:r:R:d:t:g:i:k:p:f:MVET:P:hF:B:C:o:")) != EOF) {
709 value = 0;
710 switch (opt) {
711 case 'v':
712 case 's':
713 case 'a':
714 case 'm':
715 case 'r':
716 case 'R':
717 case 'd':
718 case 't':
719 case 'g':
720 case 'i':
721 case 'k':
722 case 'T':
723 case 'P':
724 case 'F':
725 value = nicenumtoull(optarg);
726 }
727 switch (opt) {
728 case 'v':
729 zo->zo_vdevs = value;
730 break;
731 case 's':
732 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value);
733 break;
734 case 'a':
735 zo->zo_ashift = value;
736 break;
737 case 'm':
738 zo->zo_mirrors = value;
739 break;
740 case 'r':
741 zo->zo_raidz = MAX(1, value);
742 break;
743 case 'R':
744 zo->zo_raidz_parity = MIN(MAX(value, 1), 3);
745 break;
746 case 'd':
747 zo->zo_datasets = MAX(1, value);
748 break;
749 case 't':
750 zo->zo_threads = MAX(1, value);
751 break;
752 case 'g':
753 zo->zo_metaslab_force_ganging =
754 MAX(SPA_MINBLOCKSIZE << 1, value);
755 break;
756 case 'i':
757 zo->zo_init = value;
758 break;
759 case 'k':
760 zo->zo_killrate = value;
761 break;
762 case 'p':
763 (void) strlcpy(zo->zo_pool, optarg,
764 sizeof (zo->zo_pool));
765 break;
766 case 'f':
767 path = realpath(optarg, NULL);
768 if (path == NULL) {
769 (void) fprintf(stderr, "error: %s: %s\n",
770 optarg, strerror(errno));
771 usage(B_FALSE);
772 } else {
773 (void) strlcpy(zo->zo_dir, path,
774 sizeof (zo->zo_dir));
775 }
776 break;
777 case 'M':
778 zo->zo_mmp_test = 1;
779 break;
780 case 'V':
781 zo->zo_verbose++;
782 break;
783 case 'E':
784 zo->zo_init = 0;
785 break;
786 case 'T':
787 zo->zo_time = value;
788 break;
789 case 'P':
790 zo->zo_passtime = MAX(1, value);
791 break;
792 case 'F':
793 zo->zo_maxloops = MAX(1, value);
794 break;
795 case 'B':
796 (void) strlcpy(altdir, optarg, sizeof (altdir));
797 break;
798 case 'C':
799 ztest_parse_name_value(optarg, zo);
800 break;
801 case 'o':
802 if (set_global_var(optarg) != 0)
803 usage(B_FALSE);
804 break;
805 case 'h':
806 usage(B_TRUE);
807 break;
808 case '?':
809 default:
810 usage(B_FALSE);
811 break;
812 }
813 }
814
815 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1);
816
817 zo->zo_vdevtime =
818 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
819 UINT64_MAX >> 2);
820
821 if (strlen(altdir) > 0) {
822 char *cmd;
823 char *realaltdir;
824 char *bin;
825 char *ztest;
826 char *isa;
827 int isalen;
828
829 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
830 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
831
832 VERIFY(NULL != realpath(getexecname(), cmd));
833 if (0 != access(altdir, F_OK)) {
834 ztest_dump_core = B_FALSE;
835 fatal(B_TRUE, "invalid alternate ztest path: %s",
836 altdir);
837 }
838 VERIFY(NULL != realpath(altdir, realaltdir));
839
840 /*
841 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest".
842 * We want to extract <isa> to determine if we should use
843 * 32 or 64 bit binaries.
844 */
845 bin = strstr(cmd, "/usr/bin/");
846 ztest = strstr(bin, "/ztest");
847 isa = bin + 9;
848 isalen = ztest - isa;
849 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest),
850 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa);
851 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath),
852 "%s/usr/lib/%.*s", realaltdir, isalen, isa);
853
854 if (0 != access(zo->zo_alt_ztest, X_OK)) {
855 ztest_dump_core = B_FALSE;
856 fatal(B_TRUE, "invalid alternate ztest: %s",
857 zo->zo_alt_ztest);
858 } else if (0 != access(zo->zo_alt_libpath, X_OK)) {
859 ztest_dump_core = B_FALSE;
860 fatal(B_TRUE, "invalid alternate lib directory %s",
861 zo->zo_alt_libpath);
862 }
863
864 umem_free(cmd, MAXPATHLEN);
865 umem_free(realaltdir, MAXPATHLEN);
866 }
867 }
868
869 static void
ztest_kill(ztest_shared_t * zs)870 ztest_kill(ztest_shared_t *zs)
871 {
872 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa));
873 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa));
874
875 /*
876 * Before we kill off ztest, make sure that the config is updated.
877 * See comment above spa_write_cachefile().
878 */
879 mutex_enter(&spa_namespace_lock);
880 spa_write_cachefile(ztest_spa, B_FALSE, B_FALSE);
881 mutex_exit(&spa_namespace_lock);
882
883 zfs_dbgmsg_print(FTAG);
884 (void) kill(getpid(), SIGKILL);
885 }
886
887 static uint64_t
ztest_random(uint64_t range)888 ztest_random(uint64_t range)
889 {
890 uint64_t r;
891
892 ASSERT3S(ztest_fd_rand, >=, 0);
893
894 if (range == 0)
895 return (0);
896
897 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r))
898 fatal(1, "short read from /dev/urandom");
899
900 return (r % range);
901 }
902
903 /* ARGSUSED */
904 static void
ztest_record_enospc(const char * s)905 ztest_record_enospc(const char *s)
906 {
907 ztest_shared->zs_enospc_count++;
908 }
909
910 static uint64_t
ztest_get_ashift(void)911 ztest_get_ashift(void)
912 {
913 if (ztest_opts.zo_ashift == 0)
914 return (SPA_MINBLOCKSHIFT + ztest_random(5));
915 return (ztest_opts.zo_ashift);
916 }
917
918 static nvlist_t *
make_vdev_file(char * path,char * aux,char * pool,size_t size,uint64_t ashift)919 make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift)
920 {
921 char pathbuf[MAXPATHLEN];
922 uint64_t vdev;
923 nvlist_t *file;
924
925 if (ashift == 0)
926 ashift = ztest_get_ashift();
927
928 if (path == NULL) {
929 path = pathbuf;
930
931 if (aux != NULL) {
932 vdev = ztest_shared->zs_vdev_aux;
933 (void) snprintf(path, sizeof (pathbuf),
934 ztest_aux_template, ztest_opts.zo_dir,
935 pool == NULL ? ztest_opts.zo_pool : pool,
936 aux, vdev);
937 } else {
938 vdev = ztest_shared->zs_vdev_next_leaf++;
939 (void) snprintf(path, sizeof (pathbuf),
940 ztest_dev_template, ztest_opts.zo_dir,
941 pool == NULL ? ztest_opts.zo_pool : pool, vdev);
942 }
943 }
944
945 if (size != 0) {
946 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
947 if (fd == -1)
948 fatal(1, "can't open %s", path);
949 if (ftruncate(fd, size) != 0)
950 fatal(1, "can't ftruncate %s", path);
951 (void) close(fd);
952 }
953
954 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0);
955 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0);
956 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0);
957 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0);
958
959 return (file);
960 }
961
962 static nvlist_t *
make_vdev_raidz(char * path,char * aux,char * pool,size_t size,uint64_t ashift,int r)963 make_vdev_raidz(char *path, char *aux, char *pool, size_t size,
964 uint64_t ashift, int r)
965 {
966 nvlist_t *raidz, **child;
967 int c;
968
969 if (r < 2)
970 return (make_vdev_file(path, aux, pool, size, ashift));
971 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
972
973 for (c = 0; c < r; c++)
974 child[c] = make_vdev_file(path, aux, pool, size, ashift);
975
976 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0);
977 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE,
978 VDEV_TYPE_RAIDZ) == 0);
979 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY,
980 ztest_opts.zo_raidz_parity) == 0);
981 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN,
982 child, r) == 0);
983
984 for (c = 0; c < r; c++)
985 nvlist_free(child[c]);
986
987 umem_free(child, r * sizeof (nvlist_t *));
988
989 return (raidz);
990 }
991
992 static nvlist_t *
make_vdev_mirror(char * path,char * aux,char * pool,size_t size,uint64_t ashift,int r,int m)993 make_vdev_mirror(char *path, char *aux, char *pool, size_t size,
994 uint64_t ashift, int r, int m)
995 {
996 nvlist_t *mirror, **child;
997 int c;
998
999 if (m < 1)
1000 return (make_vdev_raidz(path, aux, pool, size, ashift, r));
1001
1002 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL);
1003
1004 for (c = 0; c < m; c++)
1005 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r);
1006
1007 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0);
1008 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE,
1009 VDEV_TYPE_MIRROR) == 0);
1010 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
1011 child, m) == 0);
1012
1013 for (c = 0; c < m; c++)
1014 nvlist_free(child[c]);
1015
1016 umem_free(child, m * sizeof (nvlist_t *));
1017
1018 return (mirror);
1019 }
1020
1021 static nvlist_t *
make_vdev_root(char * path,char * aux,char * pool,size_t size,uint64_t ashift,const char * class,int r,int m,int t)1022 make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift,
1023 const char *class, int r, int m, int t)
1024 {
1025 nvlist_t *root, **child;
1026 int c;
1027 boolean_t log;
1028
1029 ASSERT(t > 0);
1030
1031 log = (class != NULL && strcmp(class, "log") == 0);
1032
1033 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
1034
1035 for (c = 0; c < t; c++) {
1036 child[c] = make_vdev_mirror(path, aux, pool, size, ashift,
1037 r, m);
1038 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
1039 log) == 0);
1040
1041 if (class != NULL && class[0] != '\0') {
1042 ASSERT(m > 1 || log); /* expecting a mirror */
1043 VERIFY(nvlist_add_string(child[c],
1044 ZPOOL_CONFIG_ALLOCATION_BIAS, class) == 0);
1045 }
1046 }
1047
1048 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0);
1049 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0);
1050 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
1051 child, t) == 0);
1052
1053 for (c = 0; c < t; c++)
1054 nvlist_free(child[c]);
1055
1056 umem_free(child, t * sizeof (nvlist_t *));
1057
1058 return (root);
1059 }
1060
1061 /*
1062 * Find a random spa version. Returns back a random spa version in the
1063 * range [initial_version, SPA_VERSION_FEATURES].
1064 */
1065 static uint64_t
ztest_random_spa_version(uint64_t initial_version)1066 ztest_random_spa_version(uint64_t initial_version)
1067 {
1068 uint64_t version = initial_version;
1069
1070 if (version <= SPA_VERSION_BEFORE_FEATURES) {
1071 version = version +
1072 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1);
1073 }
1074
1075 if (version > SPA_VERSION_BEFORE_FEATURES)
1076 version = SPA_VERSION_FEATURES;
1077
1078 ASSERT(SPA_VERSION_IS_SUPPORTED(version));
1079 return (version);
1080 }
1081
1082 static int
ztest_random_blocksize(void)1083 ztest_random_blocksize(void)
1084 {
1085 uint64_t block_shift;
1086
1087 ASSERT(ztest_spa->spa_max_ashift != 0);
1088
1089 /*
1090 * Choose a block size >= the ashift.
1091 * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks.
1092 */
1093 int maxbs = SPA_OLD_MAXBLOCKSHIFT;
1094 if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE)
1095 maxbs = 20;
1096 block_shift = ztest_random(maxbs - ztest_spa->spa_max_ashift + 1);
1097 return (1 << (SPA_MINBLOCKSHIFT + block_shift));
1098 }
1099
1100 static int
ztest_random_dnodesize(void)1101 ztest_random_dnodesize(void)
1102 {
1103 int slots;
1104 int max_slots = spa_maxdnodesize(ztest_spa) >> DNODE_SHIFT;
1105
1106 if (max_slots == DNODE_MIN_SLOTS)
1107 return (DNODE_MIN_SIZE);
1108
1109 /*
1110 * Weight the random distribution more heavily toward smaller
1111 * dnode sizes since that is more likely to reflect real-world
1112 * usage.
1113 */
1114 ASSERT3U(max_slots, >, 4);
1115 switch (ztest_random(10)) {
1116 case 0:
1117 slots = 5 + ztest_random(max_slots - 4);
1118 break;
1119 case 1 ... 4:
1120 slots = 2 + ztest_random(3);
1121 break;
1122 default:
1123 slots = 1;
1124 break;
1125 }
1126
1127 return (slots << DNODE_SHIFT);
1128 }
1129
1130 static int
ztest_random_ibshift(void)1131 ztest_random_ibshift(void)
1132 {
1133 return (DN_MIN_INDBLKSHIFT +
1134 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
1135 }
1136
1137 static uint64_t
ztest_random_vdev_top(spa_t * spa,boolean_t log_ok)1138 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
1139 {
1140 uint64_t top;
1141 vdev_t *rvd = spa->spa_root_vdev;
1142 vdev_t *tvd;
1143
1144 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
1145
1146 do {
1147 top = ztest_random(rvd->vdev_children);
1148 tvd = rvd->vdev_child[top];
1149 } while (!vdev_is_concrete(tvd) || (tvd->vdev_islog && !log_ok) ||
1150 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
1151
1152 return (top);
1153 }
1154
1155 static uint64_t
ztest_random_dsl_prop(zfs_prop_t prop)1156 ztest_random_dsl_prop(zfs_prop_t prop)
1157 {
1158 uint64_t value;
1159
1160 do {
1161 value = zfs_prop_random_value(prop, ztest_random(-1ULL));
1162 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
1163
1164 return (value);
1165 }
1166
1167 static int
ztest_dsl_prop_set_uint64(char * osname,zfs_prop_t prop,uint64_t value,boolean_t inherit)1168 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
1169 boolean_t inherit)
1170 {
1171 const char *propname = zfs_prop_to_name(prop);
1172 const char *valname;
1173 char setpoint[MAXPATHLEN];
1174 uint64_t curval;
1175 int error;
1176
1177 error = dsl_prop_set_int(osname, propname,
1178 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value);
1179
1180 if (error == ENOSPC) {
1181 ztest_record_enospc(FTAG);
1182 return (error);
1183 }
1184 ASSERT0(error);
1185
1186 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
1187
1188 if (ztest_opts.zo_verbose >= 6) {
1189 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0);
1190 (void) printf("%s %s = %s at '%s'\n",
1191 osname, propname, valname, setpoint);
1192 }
1193
1194 return (error);
1195 }
1196
1197 static int
ztest_spa_prop_set_uint64(zpool_prop_t prop,uint64_t value)1198 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value)
1199 {
1200 spa_t *spa = ztest_spa;
1201 nvlist_t *props = NULL;
1202 int error;
1203
1204 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
1205 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0);
1206
1207 error = spa_prop_set(spa, props);
1208
1209 nvlist_free(props);
1210
1211 if (error == ENOSPC) {
1212 ztest_record_enospc(FTAG);
1213 return (error);
1214 }
1215 ASSERT0(error);
1216
1217 return (error);
1218 }
1219
1220 static int
ztest_dmu_objset_own(const char * name,dmu_objset_type_t type,boolean_t readonly,boolean_t decrypt,void * tag,objset_t ** osp)1221 ztest_dmu_objset_own(const char *name, dmu_objset_type_t type,
1222 boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp)
1223 {
1224 int err;
1225
1226 err = dmu_objset_own(name, type, readonly, decrypt, tag, osp);
1227 if (decrypt && err == EACCES) {
1228 char ddname[ZFS_MAX_DATASET_NAME_LEN];
1229 dsl_crypto_params_t *dcp;
1230 nvlist_t *crypto_args = fnvlist_alloc();
1231 char *cp = NULL;
1232
1233 /* spa_keystore_load_wkey() expects a dsl dir name */
1234 (void) strcpy(ddname, name);
1235 cp = strchr(ddname, '@');
1236 if (cp != NULL)
1237 *cp = '\0';
1238
1239 fnvlist_add_uint8_array(crypto_args, "wkeydata",
1240 (uint8_t *)ztest_wkeydata, WRAPPING_KEY_LEN);
1241 VERIFY0(dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL,
1242 crypto_args, &dcp));
1243 err = spa_keystore_load_wkey(ddname, dcp, B_FALSE);
1244 dsl_crypto_params_free(dcp, B_FALSE);
1245 fnvlist_free(crypto_args);
1246
1247 if (err != 0)
1248 return (err);
1249
1250 err = dmu_objset_own(name, type, readonly, decrypt, tag, osp);
1251 }
1252
1253 return (err);
1254 }
1255
1256 static void
ztest_rll_init(rll_t * rll)1257 ztest_rll_init(rll_t *rll)
1258 {
1259 rll->rll_writer = NULL;
1260 rll->rll_readers = 0;
1261 mutex_init(&rll->rll_lock, NULL, USYNC_THREAD, NULL);
1262 cv_init(&rll->rll_cv, NULL, USYNC_THREAD, NULL);
1263 }
1264
1265 static void
ztest_rll_destroy(rll_t * rll)1266 ztest_rll_destroy(rll_t *rll)
1267 {
1268 ASSERT(rll->rll_writer == NULL);
1269 ASSERT(rll->rll_readers == 0);
1270 mutex_destroy(&rll->rll_lock);
1271 cv_destroy(&rll->rll_cv);
1272 }
1273
1274 static void
ztest_rll_lock(rll_t * rll,rl_type_t type)1275 ztest_rll_lock(rll_t *rll, rl_type_t type)
1276 {
1277 mutex_enter(&rll->rll_lock);
1278
1279 if (type == RL_READER) {
1280 while (rll->rll_writer != NULL)
1281 cv_wait(&rll->rll_cv, &rll->rll_lock);
1282 rll->rll_readers++;
1283 } else {
1284 while (rll->rll_writer != NULL || rll->rll_readers)
1285 cv_wait(&rll->rll_cv, &rll->rll_lock);
1286 rll->rll_writer = curthread;
1287 }
1288
1289 mutex_exit(&rll->rll_lock);
1290 }
1291
1292 static void
ztest_rll_unlock(rll_t * rll)1293 ztest_rll_unlock(rll_t *rll)
1294 {
1295 mutex_enter(&rll->rll_lock);
1296
1297 if (rll->rll_writer) {
1298 ASSERT(rll->rll_readers == 0);
1299 rll->rll_writer = NULL;
1300 } else {
1301 ASSERT(rll->rll_readers != 0);
1302 ASSERT(rll->rll_writer == NULL);
1303 rll->rll_readers--;
1304 }
1305
1306 if (rll->rll_writer == NULL && rll->rll_readers == 0)
1307 cv_broadcast(&rll->rll_cv);
1308
1309 mutex_exit(&rll->rll_lock);
1310 }
1311
1312 static void
ztest_object_lock(ztest_ds_t * zd,uint64_t object,rl_type_t type)1313 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
1314 {
1315 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1316
1317 ztest_rll_lock(rll, type);
1318 }
1319
1320 static void
ztest_object_unlock(ztest_ds_t * zd,uint64_t object)1321 ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
1322 {
1323 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1324
1325 ztest_rll_unlock(rll);
1326 }
1327
1328 static rl_t *
ztest_range_lock(ztest_ds_t * zd,uint64_t object,uint64_t offset,uint64_t size,rl_type_t type)1329 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
1330 uint64_t size, rl_type_t type)
1331 {
1332 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
1333 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
1334 rl_t *rl;
1335
1336 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
1337 rl->rl_object = object;
1338 rl->rl_offset = offset;
1339 rl->rl_size = size;
1340 rl->rl_lock = rll;
1341
1342 ztest_rll_lock(rll, type);
1343
1344 return (rl);
1345 }
1346
1347 static void
ztest_range_unlock(rl_t * rl)1348 ztest_range_unlock(rl_t *rl)
1349 {
1350 rll_t *rll = rl->rl_lock;
1351
1352 ztest_rll_unlock(rll);
1353
1354 umem_free(rl, sizeof (*rl));
1355 }
1356
1357 static void
ztest_zd_init(ztest_ds_t * zd,ztest_shared_ds_t * szd,objset_t * os)1358 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os)
1359 {
1360 zd->zd_os = os;
1361 zd->zd_zilog = dmu_objset_zil(os);
1362 zd->zd_shared = szd;
1363 dmu_objset_name(os, zd->zd_name);
1364
1365 if (zd->zd_shared != NULL)
1366 zd->zd_shared->zd_seq = 0;
1367
1368 rw_init(&zd->zd_zilog_lock, NULL, USYNC_THREAD, NULL);
1369 mutex_init(&zd->zd_dirobj_lock, NULL, USYNC_THREAD, NULL);
1370
1371 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1372 ztest_rll_init(&zd->zd_object_lock[l]);
1373
1374 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1375 ztest_rll_init(&zd->zd_range_lock[l]);
1376 }
1377
1378 static void
ztest_zd_fini(ztest_ds_t * zd)1379 ztest_zd_fini(ztest_ds_t *zd)
1380 {
1381 mutex_destroy(&zd->zd_dirobj_lock);
1382
1383 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1384 ztest_rll_destroy(&zd->zd_object_lock[l]);
1385
1386 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1387 ztest_rll_destroy(&zd->zd_range_lock[l]);
1388 }
1389
1390 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
1391
1392 static uint64_t
ztest_tx_assign(dmu_tx_t * tx,uint64_t txg_how,const char * tag)1393 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
1394 {
1395 uint64_t txg;
1396 int error;
1397
1398 /*
1399 * Attempt to assign tx to some transaction group.
1400 */
1401 error = dmu_tx_assign(tx, txg_how);
1402 if (error) {
1403 if (error == ERESTART) {
1404 ASSERT(txg_how == TXG_NOWAIT);
1405 dmu_tx_wait(tx);
1406 } else {
1407 ASSERT3U(error, ==, ENOSPC);
1408 ztest_record_enospc(tag);
1409 }
1410 dmu_tx_abort(tx);
1411 return (0);
1412 }
1413 txg = dmu_tx_get_txg(tx);
1414 ASSERT(txg != 0);
1415 return (txg);
1416 }
1417
1418 static void
ztest_pattern_set(void * buf,uint64_t size,uint64_t value)1419 ztest_pattern_set(void *buf, uint64_t size, uint64_t value)
1420 {
1421 uint64_t *ip = buf;
1422 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1423
1424 while (ip < ip_end)
1425 *ip++ = value;
1426 }
1427
1428 static boolean_t
ztest_pattern_match(void * buf,uint64_t size,uint64_t value)1429 ztest_pattern_match(void *buf, uint64_t size, uint64_t value)
1430 {
1431 uint64_t *ip = buf;
1432 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1433 uint64_t diff = 0;
1434
1435 while (ip < ip_end)
1436 diff |= (value - *ip++);
1437
1438 return (diff == 0);
1439 }
1440
1441 static void
ztest_bt_generate(ztest_block_tag_t * bt,objset_t * os,uint64_t object,uint64_t dnodesize,uint64_t offset,uint64_t gen,uint64_t txg,uint64_t crtxg)1442 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1443 uint64_t dnodesize, uint64_t offset, uint64_t gen, uint64_t txg,
1444 uint64_t crtxg)
1445 {
1446 bt->bt_magic = BT_MAGIC;
1447 bt->bt_objset = dmu_objset_id(os);
1448 bt->bt_object = object;
1449 bt->bt_dnodesize = dnodesize;
1450 bt->bt_offset = offset;
1451 bt->bt_gen = gen;
1452 bt->bt_txg = txg;
1453 bt->bt_crtxg = crtxg;
1454 }
1455
1456 static void
ztest_bt_verify(ztest_block_tag_t * bt,objset_t * os,uint64_t object,uint64_t dnodesize,uint64_t offset,uint64_t gen,uint64_t txg,uint64_t crtxg)1457 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1458 uint64_t dnodesize, uint64_t offset, uint64_t gen, uint64_t txg,
1459 uint64_t crtxg)
1460 {
1461 ASSERT3U(bt->bt_magic, ==, BT_MAGIC);
1462 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os));
1463 ASSERT3U(bt->bt_object, ==, object);
1464 ASSERT3U(bt->bt_dnodesize, ==, dnodesize);
1465 ASSERT3U(bt->bt_offset, ==, offset);
1466 ASSERT3U(bt->bt_gen, <=, gen);
1467 ASSERT3U(bt->bt_txg, <=, txg);
1468 ASSERT3U(bt->bt_crtxg, ==, crtxg);
1469 }
1470
1471 static ztest_block_tag_t *
ztest_bt_bonus(dmu_buf_t * db)1472 ztest_bt_bonus(dmu_buf_t *db)
1473 {
1474 dmu_object_info_t doi;
1475 ztest_block_tag_t *bt;
1476
1477 dmu_object_info_from_db(db, &doi);
1478 ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
1479 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
1480 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
1481
1482 return (bt);
1483 }
1484
1485 /*
1486 * Generate a token to fill up unused bonus buffer space. Try to make
1487 * it unique to the object, generation, and offset to verify that data
1488 * is not getting overwritten by data from other dnodes.
1489 */
1490 #define ZTEST_BONUS_FILL_TOKEN(obj, ds, gen, offset) \
1491 (((ds) << 48) | ((gen) << 32) | ((obj) << 8) | (offset))
1492
1493 /*
1494 * Fill up the unused bonus buffer region before the block tag with a
1495 * verifiable pattern. Filling the whole bonus area with non-zero data
1496 * helps ensure that all dnode traversal code properly skips the
1497 * interior regions of large dnodes.
1498 */
1499 void
ztest_fill_unused_bonus(dmu_buf_t * db,void * end,uint64_t obj,objset_t * os,uint64_t gen)1500 ztest_fill_unused_bonus(dmu_buf_t *db, void *end, uint64_t obj,
1501 objset_t *os, uint64_t gen)
1502 {
1503 uint64_t *bonusp;
1504
1505 ASSERT(IS_P2ALIGNED((char *)end - (char *)db->db_data, 8));
1506
1507 for (bonusp = db->db_data; bonusp < (uint64_t *)end; bonusp++) {
1508 uint64_t token = ZTEST_BONUS_FILL_TOKEN(obj, dmu_objset_id(os),
1509 gen, bonusp - (uint64_t *)db->db_data);
1510 *bonusp = token;
1511 }
1512 }
1513
1514 /*
1515 * Verify that the unused area of a bonus buffer is filled with the
1516 * expected tokens.
1517 */
1518 void
ztest_verify_unused_bonus(dmu_buf_t * db,void * end,uint64_t obj,objset_t * os,uint64_t gen)1519 ztest_verify_unused_bonus(dmu_buf_t *db, void *end, uint64_t obj,
1520 objset_t *os, uint64_t gen)
1521 {
1522 uint64_t *bonusp;
1523
1524 for (bonusp = db->db_data; bonusp < (uint64_t *)end; bonusp++) {
1525 uint64_t token = ZTEST_BONUS_FILL_TOKEN(obj, dmu_objset_id(os),
1526 gen, bonusp - (uint64_t *)db->db_data);
1527 VERIFY3U(*bonusp, ==, token);
1528 }
1529 }
1530
1531 /*
1532 * ZIL logging ops
1533 */
1534
1535 #define lrz_type lr_mode
1536 #define lrz_blocksize lr_uid
1537 #define lrz_ibshift lr_gid
1538 #define lrz_bonustype lr_rdev
1539 #define lrz_dnodesize lr_crtime[1]
1540
1541 static void
ztest_log_create(ztest_ds_t * zd,dmu_tx_t * tx,lr_create_t * lr)1542 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
1543 {
1544 char *name = (void *)(lr + 1); /* name follows lr */
1545 size_t namesize = strlen(name) + 1;
1546 itx_t *itx;
1547
1548 if (zil_replaying(zd->zd_zilog, tx))
1549 return;
1550
1551 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
1552 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1553 sizeof (*lr) + namesize - sizeof (lr_t));
1554
1555 zil_itx_assign(zd->zd_zilog, itx, tx);
1556 }
1557
1558 static void
ztest_log_remove(ztest_ds_t * zd,dmu_tx_t * tx,lr_remove_t * lr,uint64_t object)1559 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
1560 {
1561 char *name = (void *)(lr + 1); /* name follows lr */
1562 size_t namesize = strlen(name) + 1;
1563 itx_t *itx;
1564
1565 if (zil_replaying(zd->zd_zilog, tx))
1566 return;
1567
1568 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
1569 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1570 sizeof (*lr) + namesize - sizeof (lr_t));
1571
1572 itx->itx_oid = object;
1573 zil_itx_assign(zd->zd_zilog, itx, tx);
1574 }
1575
1576 static void
ztest_log_write(ztest_ds_t * zd,dmu_tx_t * tx,lr_write_t * lr)1577 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
1578 {
1579 itx_t *itx;
1580 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
1581
1582 if (zil_replaying(zd->zd_zilog, tx))
1583 return;
1584
1585 if (lr->lr_length > ZIL_MAX_LOG_DATA)
1586 write_state = WR_INDIRECT;
1587
1588 itx = zil_itx_create(TX_WRITE,
1589 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
1590
1591 if (write_state == WR_COPIED &&
1592 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
1593 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
1594 zil_itx_destroy(itx);
1595 itx = zil_itx_create(TX_WRITE, sizeof (*lr));
1596 write_state = WR_NEED_COPY;
1597 }
1598 itx->itx_private = zd;
1599 itx->itx_wr_state = write_state;
1600 itx->itx_sync = (ztest_random(8) == 0);
1601
1602 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1603 sizeof (*lr) - sizeof (lr_t));
1604
1605 zil_itx_assign(zd->zd_zilog, itx, tx);
1606 }
1607
1608 static void
ztest_log_truncate(ztest_ds_t * zd,dmu_tx_t * tx,lr_truncate_t * lr)1609 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
1610 {
1611 itx_t *itx;
1612
1613 if (zil_replaying(zd->zd_zilog, tx))
1614 return;
1615
1616 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
1617 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1618 sizeof (*lr) - sizeof (lr_t));
1619
1620 itx->itx_sync = B_FALSE;
1621 zil_itx_assign(zd->zd_zilog, itx, tx);
1622 }
1623
1624 static void
ztest_log_setattr(ztest_ds_t * zd,dmu_tx_t * tx,lr_setattr_t * lr)1625 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
1626 {
1627 itx_t *itx;
1628
1629 if (zil_replaying(zd->zd_zilog, tx))
1630 return;
1631
1632 itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
1633 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1634 sizeof (*lr) - sizeof (lr_t));
1635
1636 itx->itx_sync = B_FALSE;
1637 zil_itx_assign(zd->zd_zilog, itx, tx);
1638 }
1639
1640 /*
1641 * ZIL replay ops
1642 */
1643 static int
ztest_replay_create(void * arg1,void * arg2,boolean_t byteswap)1644 ztest_replay_create(void *arg1, void *arg2, boolean_t byteswap)
1645 {
1646 ztest_ds_t *zd = arg1;
1647 lr_create_t *lr = arg2;
1648 char *name = (void *)(lr + 1); /* name follows lr */
1649 objset_t *os = zd->zd_os;
1650 ztest_block_tag_t *bbt;
1651 dmu_buf_t *db;
1652 dmu_tx_t *tx;
1653 uint64_t txg;
1654 int error = 0;
1655 int bonuslen;
1656
1657 if (byteswap)
1658 byteswap_uint64_array(lr, sizeof (*lr));
1659
1660 ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1661 ASSERT(name[0] != '\0');
1662
1663 tx = dmu_tx_create(os);
1664
1665 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
1666
1667 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1668 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
1669 } else {
1670 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
1671 }
1672
1673 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1674 if (txg == 0)
1675 return (ENOSPC);
1676
1677 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid);
1678 bonuslen = DN_BONUS_SIZE(lr->lrz_dnodesize);
1679
1680 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1681 if (lr->lr_foid == 0) {
1682 lr->lr_foid = zap_create_dnsize(os,
1683 lr->lrz_type, lr->lrz_bonustype,
1684 bonuslen, lr->lrz_dnodesize, tx);
1685 } else {
1686 error = zap_create_claim_dnsize(os, lr->lr_foid,
1687 lr->lrz_type, lr->lrz_bonustype,
1688 bonuslen, lr->lrz_dnodesize, tx);
1689 }
1690 } else {
1691 if (lr->lr_foid == 0) {
1692 lr->lr_foid = dmu_object_alloc_dnsize(os,
1693 lr->lrz_type, 0, lr->lrz_bonustype,
1694 bonuslen, lr->lrz_dnodesize, tx);
1695 } else {
1696 error = dmu_object_claim_dnsize(os, lr->lr_foid,
1697 lr->lrz_type, 0, lr->lrz_bonustype,
1698 bonuslen, lr->lrz_dnodesize, tx);
1699 }
1700 }
1701
1702 if (error) {
1703 ASSERT3U(error, ==, EEXIST);
1704 ASSERT(zd->zd_zilog->zl_replay);
1705 dmu_tx_commit(tx);
1706 return (error);
1707 }
1708
1709 ASSERT(lr->lr_foid != 0);
1710
1711 if (lr->lrz_type != DMU_OT_ZAP_OTHER)
1712 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid,
1713 lr->lrz_blocksize, lr->lrz_ibshift, tx));
1714
1715 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1716 bbt = ztest_bt_bonus(db);
1717 dmu_buf_will_dirty(db, tx);
1718 ztest_bt_generate(bbt, os, lr->lr_foid, lr->lrz_dnodesize, -1ULL,
1719 lr->lr_gen, txg, txg);
1720 ztest_fill_unused_bonus(db, bbt, lr->lr_foid, os, lr->lr_gen);
1721 dmu_buf_rele(db, FTAG);
1722
1723 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
1724 &lr->lr_foid, tx));
1725
1726 (void) ztest_log_create(zd, tx, lr);
1727
1728 dmu_tx_commit(tx);
1729
1730 return (0);
1731 }
1732
1733 static int
ztest_replay_remove(void * arg1,void * arg2,boolean_t byteswap)1734 ztest_replay_remove(void *arg1, void *arg2, boolean_t byteswap)
1735 {
1736 ztest_ds_t *zd = arg1;
1737 lr_remove_t *lr = arg2;
1738 char *name = (void *)(lr + 1); /* name follows lr */
1739 objset_t *os = zd->zd_os;
1740 dmu_object_info_t doi;
1741 dmu_tx_t *tx;
1742 uint64_t object, txg;
1743
1744 if (byteswap)
1745 byteswap_uint64_array(lr, sizeof (*lr));
1746
1747 ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1748 ASSERT(name[0] != '\0');
1749
1750 VERIFY3U(0, ==,
1751 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
1752 ASSERT(object != 0);
1753
1754 ztest_object_lock(zd, object, RL_WRITER);
1755
1756 VERIFY3U(0, ==, dmu_object_info(os, object, &doi));
1757
1758 tx = dmu_tx_create(os);
1759
1760 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
1761 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
1762
1763 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1764 if (txg == 0) {
1765 ztest_object_unlock(zd, object);
1766 return (ENOSPC);
1767 }
1768
1769 if (doi.doi_type == DMU_OT_ZAP_OTHER) {
1770 VERIFY3U(0, ==, zap_destroy(os, object, tx));
1771 } else {
1772 VERIFY3U(0, ==, dmu_object_free(os, object, tx));
1773 }
1774
1775 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx));
1776
1777 (void) ztest_log_remove(zd, tx, lr, object);
1778
1779 dmu_tx_commit(tx);
1780
1781 ztest_object_unlock(zd, object);
1782
1783 return (0);
1784 }
1785
1786 static int
ztest_replay_write(void * arg1,void * arg2,boolean_t byteswap)1787 ztest_replay_write(void *arg1, void *arg2, boolean_t byteswap)
1788 {
1789 ztest_ds_t *zd = arg1;
1790 lr_write_t *lr = arg2;
1791 objset_t *os = zd->zd_os;
1792 void *data = lr + 1; /* data follows lr */
1793 uint64_t offset, length;
1794 ztest_block_tag_t *bt = data;
1795 ztest_block_tag_t *bbt;
1796 uint64_t gen, txg, lrtxg, crtxg;
1797 dmu_object_info_t doi;
1798 dmu_tx_t *tx;
1799 dmu_buf_t *db;
1800 arc_buf_t *abuf = NULL;
1801 rl_t *rl;
1802
1803 if (byteswap)
1804 byteswap_uint64_array(lr, sizeof (*lr));
1805
1806 offset = lr->lr_offset;
1807 length = lr->lr_length;
1808
1809 /* If it's a dmu_sync() block, write the whole block */
1810 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
1811 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
1812 if (length < blocksize) {
1813 offset -= offset % blocksize;
1814 length = blocksize;
1815 }
1816 }
1817
1818 if (bt->bt_magic == BSWAP_64(BT_MAGIC))
1819 byteswap_uint64_array(bt, sizeof (*bt));
1820
1821 if (bt->bt_magic != BT_MAGIC)
1822 bt = NULL;
1823
1824 ztest_object_lock(zd, lr->lr_foid, RL_READER);
1825 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
1826
1827 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1828
1829 dmu_object_info_from_db(db, &doi);
1830
1831 bbt = ztest_bt_bonus(db);
1832 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1833 gen = bbt->bt_gen;
1834 crtxg = bbt->bt_crtxg;
1835 lrtxg = lr->lr_common.lrc_txg;
1836
1837 tx = dmu_tx_create(os);
1838
1839 dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
1840
1841 if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
1842 P2PHASE(offset, length) == 0)
1843 abuf = dmu_request_arcbuf(db, length);
1844
1845 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1846 if (txg == 0) {
1847 if (abuf != NULL)
1848 dmu_return_arcbuf(abuf);
1849 dmu_buf_rele(db, FTAG);
1850 ztest_range_unlock(rl);
1851 ztest_object_unlock(zd, lr->lr_foid);
1852 return (ENOSPC);
1853 }
1854
1855 if (bt != NULL) {
1856 /*
1857 * Usually, verify the old data before writing new data --
1858 * but not always, because we also want to verify correct
1859 * behavior when the data was not recently read into cache.
1860 */
1861 ASSERT(offset % doi.doi_data_block_size == 0);
1862 if (ztest_random(4) != 0) {
1863 int prefetch = ztest_random(2) ?
1864 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
1865 ztest_block_tag_t rbt;
1866
1867 VERIFY(dmu_read(os, lr->lr_foid, offset,
1868 sizeof (rbt), &rbt, prefetch) == 0);
1869 if (rbt.bt_magic == BT_MAGIC) {
1870 ztest_bt_verify(&rbt, os, lr->lr_foid, 0,
1871 offset, gen, txg, crtxg);
1872 }
1873 }
1874
1875 /*
1876 * Writes can appear to be newer than the bonus buffer because
1877 * the ztest_get_data() callback does a dmu_read() of the
1878 * open-context data, which may be different than the data
1879 * as it was when the write was generated.
1880 */
1881 if (zd->zd_zilog->zl_replay) {
1882 ztest_bt_verify(bt, os, lr->lr_foid, 0, offset,
1883 MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
1884 bt->bt_crtxg);
1885 }
1886
1887 /*
1888 * Set the bt's gen/txg to the bonus buffer's gen/txg
1889 * so that all of the usual ASSERTs will work.
1890 */
1891 ztest_bt_generate(bt, os, lr->lr_foid, 0, offset, gen, txg,
1892 crtxg);
1893 }
1894
1895 if (abuf == NULL) {
1896 dmu_write(os, lr->lr_foid, offset, length, data, tx);
1897 } else {
1898 bcopy(data, abuf->b_data, length);
1899 dmu_assign_arcbuf_by_dbuf(db, offset, abuf, tx);
1900 }
1901
1902 (void) ztest_log_write(zd, tx, lr);
1903
1904 dmu_buf_rele(db, FTAG);
1905
1906 dmu_tx_commit(tx);
1907
1908 ztest_range_unlock(rl);
1909 ztest_object_unlock(zd, lr->lr_foid);
1910
1911 return (0);
1912 }
1913
1914 static int
ztest_replay_truncate(void * arg1,void * arg2,boolean_t byteswap)1915 ztest_replay_truncate(void *arg1, void *arg2, boolean_t byteswap)
1916 {
1917 ztest_ds_t *zd = arg1;
1918 lr_truncate_t *lr = arg2;
1919 objset_t *os = zd->zd_os;
1920 dmu_tx_t *tx;
1921 uint64_t txg;
1922 rl_t *rl;
1923
1924 if (byteswap)
1925 byteswap_uint64_array(lr, sizeof (*lr));
1926
1927 ztest_object_lock(zd, lr->lr_foid, RL_READER);
1928 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
1929 RL_WRITER);
1930
1931 tx = dmu_tx_create(os);
1932
1933 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
1934
1935 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1936 if (txg == 0) {
1937 ztest_range_unlock(rl);
1938 ztest_object_unlock(zd, lr->lr_foid);
1939 return (ENOSPC);
1940 }
1941
1942 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
1943 lr->lr_length, tx) == 0);
1944
1945 (void) ztest_log_truncate(zd, tx, lr);
1946
1947 dmu_tx_commit(tx);
1948
1949 ztest_range_unlock(rl);
1950 ztest_object_unlock(zd, lr->lr_foid);
1951
1952 return (0);
1953 }
1954
1955 static int
ztest_replay_setattr(void * arg1,void * arg2,boolean_t byteswap)1956 ztest_replay_setattr(void *arg1, void *arg2, boolean_t byteswap)
1957 {
1958 ztest_ds_t *zd = arg1;
1959 lr_setattr_t *lr = arg2;
1960 objset_t *os = zd->zd_os;
1961 dmu_tx_t *tx;
1962 dmu_buf_t *db;
1963 ztest_block_tag_t *bbt;
1964 uint64_t txg, lrtxg, crtxg, dnodesize;
1965
1966 if (byteswap)
1967 byteswap_uint64_array(lr, sizeof (*lr));
1968
1969 ztest_object_lock(zd, lr->lr_foid, RL_WRITER);
1970
1971 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1972
1973 tx = dmu_tx_create(os);
1974 dmu_tx_hold_bonus(tx, lr->lr_foid);
1975
1976 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1977 if (txg == 0) {
1978 dmu_buf_rele(db, FTAG);
1979 ztest_object_unlock(zd, lr->lr_foid);
1980 return (ENOSPC);
1981 }
1982
1983 bbt = ztest_bt_bonus(db);
1984 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1985 crtxg = bbt->bt_crtxg;
1986 lrtxg = lr->lr_common.lrc_txg;
1987 dnodesize = bbt->bt_dnodesize;
1988
1989 if (zd->zd_zilog->zl_replay) {
1990 ASSERT(lr->lr_size != 0);
1991 ASSERT(lr->lr_mode != 0);
1992 ASSERT(lrtxg != 0);
1993 } else {
1994 /*
1995 * Randomly change the size and increment the generation.
1996 */
1997 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
1998 sizeof (*bbt);
1999 lr->lr_mode = bbt->bt_gen + 1;
2000 ASSERT(lrtxg == 0);
2001 }
2002
2003 /*
2004 * Verify that the current bonus buffer is not newer than our txg.
2005 */
2006 ztest_bt_verify(bbt, os, lr->lr_foid, dnodesize, -1ULL, lr->lr_mode,
2007 MAX(txg, lrtxg), crtxg);
2008
2009 dmu_buf_will_dirty(db, tx);
2010
2011 ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
2012 ASSERT3U(lr->lr_size, <=, db->db_size);
2013 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx));
2014 bbt = ztest_bt_bonus(db);
2015
2016 ztest_bt_generate(bbt, os, lr->lr_foid, dnodesize, -1ULL, lr->lr_mode,
2017 txg, crtxg);
2018 ztest_fill_unused_bonus(db, bbt, lr->lr_foid, os, bbt->bt_gen);
2019
2020 dmu_buf_rele(db, FTAG);
2021
2022 (void) ztest_log_setattr(zd, tx, lr);
2023
2024 dmu_tx_commit(tx);
2025
2026 ztest_object_unlock(zd, lr->lr_foid);
2027
2028 return (0);
2029 }
2030
2031 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = {
2032 NULL, /* 0 no such transaction type */
2033 ztest_replay_create, /* TX_CREATE */
2034 NULL, /* TX_MKDIR */
2035 NULL, /* TX_MKXATTR */
2036 NULL, /* TX_SYMLINK */
2037 ztest_replay_remove, /* TX_REMOVE */
2038 NULL, /* TX_RMDIR */
2039 NULL, /* TX_LINK */
2040 NULL, /* TX_RENAME */
2041 ztest_replay_write, /* TX_WRITE */
2042 ztest_replay_truncate, /* TX_TRUNCATE */
2043 ztest_replay_setattr, /* TX_SETATTR */
2044 NULL, /* TX_ACL */
2045 NULL, /* TX_CREATE_ACL */
2046 NULL, /* TX_CREATE_ATTR */
2047 NULL, /* TX_CREATE_ACL_ATTR */
2048 NULL, /* TX_MKDIR_ACL */
2049 NULL, /* TX_MKDIR_ATTR */
2050 NULL, /* TX_MKDIR_ACL_ATTR */
2051 NULL, /* TX_WRITE2 */
2052 };
2053
2054 /*
2055 * ZIL get_data callbacks
2056 */
2057
2058 /* ARGSUSED */
2059 static void
ztest_get_done(zgd_t * zgd,int error)2060 ztest_get_done(zgd_t *zgd, int error)
2061 {
2062 ztest_ds_t *zd = zgd->zgd_private;
2063 uint64_t object = ((rl_t *)zgd->zgd_lr)->rl_object;
2064
2065 if (zgd->zgd_db)
2066 dmu_buf_rele(zgd->zgd_db, zgd);
2067
2068 ztest_range_unlock((rl_t *)zgd->zgd_lr);
2069 ztest_object_unlock(zd, object);
2070
2071 umem_free(zgd, sizeof (*zgd));
2072 }
2073
2074 static int
ztest_get_data(void * arg,lr_write_t * lr,char * buf,struct lwb * lwb,zio_t * zio)2075 ztest_get_data(void *arg, lr_write_t *lr, char *buf, struct lwb *lwb,
2076 zio_t *zio)
2077 {
2078 ztest_ds_t *zd = arg;
2079 objset_t *os = zd->zd_os;
2080 uint64_t object = lr->lr_foid;
2081 uint64_t offset = lr->lr_offset;
2082 uint64_t size = lr->lr_length;
2083 uint64_t txg = lr->lr_common.lrc_txg;
2084 uint64_t crtxg;
2085 dmu_object_info_t doi;
2086 dmu_buf_t *db;
2087 zgd_t *zgd;
2088 int error;
2089
2090 ASSERT3P(lwb, !=, NULL);
2091 ASSERT3P(zio, !=, NULL);
2092 ASSERT3U(size, !=, 0);
2093
2094 ztest_object_lock(zd, object, RL_READER);
2095 error = dmu_bonus_hold(os, object, FTAG, &db);
2096 if (error) {
2097 ztest_object_unlock(zd, object);
2098 return (error);
2099 }
2100
2101 crtxg = ztest_bt_bonus(db)->bt_crtxg;
2102
2103 if (crtxg == 0 || crtxg > txg) {
2104 dmu_buf_rele(db, FTAG);
2105 ztest_object_unlock(zd, object);
2106 return (ENOENT);
2107 }
2108
2109 dmu_object_info_from_db(db, &doi);
2110 dmu_buf_rele(db, FTAG);
2111 db = NULL;
2112
2113 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
2114 zgd->zgd_lwb = lwb;
2115 zgd->zgd_private = zd;
2116
2117 if (buf != NULL) { /* immediate write */
2118 zgd->zgd_lr = (struct locked_range *)ztest_range_lock(zd,
2119 object, offset, size, RL_READER);
2120
2121 error = dmu_read(os, object, offset, size, buf,
2122 DMU_READ_NO_PREFETCH);
2123 ASSERT(error == 0);
2124 } else {
2125 size = doi.doi_data_block_size;
2126 if (ISP2(size)) {
2127 offset = P2ALIGN(offset, size);
2128 } else {
2129 ASSERT(offset < size);
2130 offset = 0;
2131 }
2132
2133 zgd->zgd_lr = (struct locked_range *)ztest_range_lock(zd,
2134 object, offset, size, RL_READER);
2135
2136 error = dmu_buf_hold(os, object, offset, zgd, &db,
2137 DMU_READ_NO_PREFETCH);
2138
2139 if (error == 0) {
2140 blkptr_t *bp = &lr->lr_blkptr;
2141
2142 zgd->zgd_db = db;
2143 zgd->zgd_bp = bp;
2144
2145 ASSERT(db->db_offset == offset);
2146 ASSERT(db->db_size == size);
2147
2148 error = dmu_sync(zio, lr->lr_common.lrc_txg,
2149 ztest_get_done, zgd);
2150
2151 if (error == 0)
2152 return (0);
2153 }
2154 }
2155
2156 ztest_get_done(zgd, error);
2157
2158 return (error);
2159 }
2160
2161 static void *
ztest_lr_alloc(size_t lrsize,char * name)2162 ztest_lr_alloc(size_t lrsize, char *name)
2163 {
2164 char *lr;
2165 size_t namesize = name ? strlen(name) + 1 : 0;
2166
2167 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
2168
2169 if (name)
2170 bcopy(name, lr + lrsize, namesize);
2171
2172 return (lr);
2173 }
2174
2175 void
ztest_lr_free(void * lr,size_t lrsize,char * name)2176 ztest_lr_free(void *lr, size_t lrsize, char *name)
2177 {
2178 size_t namesize = name ? strlen(name) + 1 : 0;
2179
2180 umem_free(lr, lrsize + namesize);
2181 }
2182
2183 /*
2184 * Lookup a bunch of objects. Returns the number of objects not found.
2185 */
2186 static int
ztest_lookup(ztest_ds_t * zd,ztest_od_t * od,int count)2187 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
2188 {
2189 int missing = 0;
2190 int error;
2191
2192 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2193
2194 for (int i = 0; i < count; i++, od++) {
2195 od->od_object = 0;
2196 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
2197 sizeof (uint64_t), 1, &od->od_object);
2198 if (error) {
2199 ASSERT(error == ENOENT);
2200 ASSERT(od->od_object == 0);
2201 missing++;
2202 } else {
2203 dmu_buf_t *db;
2204 ztest_block_tag_t *bbt;
2205 dmu_object_info_t doi;
2206
2207 ASSERT(od->od_object != 0);
2208 ASSERT(missing == 0); /* there should be no gaps */
2209
2210 ztest_object_lock(zd, od->od_object, RL_READER);
2211 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os,
2212 od->od_object, FTAG, &db));
2213 dmu_object_info_from_db(db, &doi);
2214 bbt = ztest_bt_bonus(db);
2215 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
2216 od->od_type = doi.doi_type;
2217 od->od_blocksize = doi.doi_data_block_size;
2218 od->od_gen = bbt->bt_gen;
2219 dmu_buf_rele(db, FTAG);
2220 ztest_object_unlock(zd, od->od_object);
2221 }
2222 }
2223
2224 return (missing);
2225 }
2226
2227 static int
ztest_create(ztest_ds_t * zd,ztest_od_t * od,int count)2228 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
2229 {
2230 int missing = 0;
2231
2232 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2233
2234 for (int i = 0; i < count; i++, od++) {
2235 if (missing) {
2236 od->od_object = 0;
2237 missing++;
2238 continue;
2239 }
2240
2241 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2242
2243 lr->lr_doid = od->od_dir;
2244 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */
2245 lr->lrz_type = od->od_crtype;
2246 lr->lrz_blocksize = od->od_crblocksize;
2247 lr->lrz_ibshift = ztest_random_ibshift();
2248 lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
2249 lr->lrz_dnodesize = od->od_crdnodesize;
2250 lr->lr_gen = od->od_crgen;
2251 lr->lr_crtime[0] = time(NULL);
2252
2253 if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
2254 ASSERT(missing == 0);
2255 od->od_object = 0;
2256 missing++;
2257 } else {
2258 od->od_object = lr->lr_foid;
2259 od->od_type = od->od_crtype;
2260 od->od_blocksize = od->od_crblocksize;
2261 od->od_gen = od->od_crgen;
2262 ASSERT(od->od_object != 0);
2263 }
2264
2265 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2266 }
2267
2268 return (missing);
2269 }
2270
2271 static int
ztest_remove(ztest_ds_t * zd,ztest_od_t * od,int count)2272 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
2273 {
2274 int missing = 0;
2275 int error;
2276
2277 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2278
2279 od += count - 1;
2280
2281 for (int i = count - 1; i >= 0; i--, od--) {
2282 if (missing) {
2283 missing++;
2284 continue;
2285 }
2286
2287 /*
2288 * No object was found.
2289 */
2290 if (od->od_object == 0)
2291 continue;
2292
2293 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2294
2295 lr->lr_doid = od->od_dir;
2296
2297 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
2298 ASSERT3U(error, ==, ENOSPC);
2299 missing++;
2300 } else {
2301 od->od_object = 0;
2302 }
2303 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2304 }
2305
2306 return (missing);
2307 }
2308
2309 static int
ztest_write(ztest_ds_t * zd,uint64_t object,uint64_t offset,uint64_t size,void * data)2310 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
2311 void *data)
2312 {
2313 lr_write_t *lr;
2314 int error;
2315
2316 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
2317
2318 lr->lr_foid = object;
2319 lr->lr_offset = offset;
2320 lr->lr_length = size;
2321 lr->lr_blkoff = 0;
2322 BP_ZERO(&lr->lr_blkptr);
2323
2324 bcopy(data, lr + 1, size);
2325
2326 error = ztest_replay_write(zd, lr, B_FALSE);
2327
2328 ztest_lr_free(lr, sizeof (*lr) + size, NULL);
2329
2330 return (error);
2331 }
2332
2333 static int
ztest_truncate(ztest_ds_t * zd,uint64_t object,uint64_t offset,uint64_t size)2334 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2335 {
2336 lr_truncate_t *lr;
2337 int error;
2338
2339 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2340
2341 lr->lr_foid = object;
2342 lr->lr_offset = offset;
2343 lr->lr_length = size;
2344
2345 error = ztest_replay_truncate(zd, lr, B_FALSE);
2346
2347 ztest_lr_free(lr, sizeof (*lr), NULL);
2348
2349 return (error);
2350 }
2351
2352 static int
ztest_setattr(ztest_ds_t * zd,uint64_t object)2353 ztest_setattr(ztest_ds_t *zd, uint64_t object)
2354 {
2355 lr_setattr_t *lr;
2356 int error;
2357
2358 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2359
2360 lr->lr_foid = object;
2361 lr->lr_size = 0;
2362 lr->lr_mode = 0;
2363
2364 error = ztest_replay_setattr(zd, lr, B_FALSE);
2365
2366 ztest_lr_free(lr, sizeof (*lr), NULL);
2367
2368 return (error);
2369 }
2370
2371 static void
ztest_prealloc(ztest_ds_t * zd,uint64_t object,uint64_t offset,uint64_t size)2372 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2373 {
2374 objset_t *os = zd->zd_os;
2375 dmu_tx_t *tx;
2376 uint64_t txg;
2377 rl_t *rl;
2378
2379 txg_wait_synced(dmu_objset_pool(os), 0);
2380
2381 ztest_object_lock(zd, object, RL_READER);
2382 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);
2383
2384 tx = dmu_tx_create(os);
2385
2386 dmu_tx_hold_write(tx, object, offset, size);
2387
2388 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2389
2390 if (txg != 0) {
2391 dmu_prealloc(os, object, offset, size, tx);
2392 dmu_tx_commit(tx);
2393 txg_wait_synced(dmu_objset_pool(os), txg);
2394 } else {
2395 (void) dmu_free_long_range(os, object, offset, size);
2396 }
2397
2398 ztest_range_unlock(rl);
2399 ztest_object_unlock(zd, object);
2400 }
2401
2402 static void
ztest_io(ztest_ds_t * zd,uint64_t object,uint64_t offset)2403 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
2404 {
2405 int err;
2406 ztest_block_tag_t wbt;
2407 dmu_object_info_t doi;
2408 enum ztest_io_type io_type;
2409 uint64_t blocksize;
2410 void *data;
2411
2412 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0);
2413 blocksize = doi.doi_data_block_size;
2414 data = umem_alloc(blocksize, UMEM_NOFAIL);
2415
2416 /*
2417 * Pick an i/o type at random, biased toward writing block tags.
2418 */
2419 io_type = ztest_random(ZTEST_IO_TYPES);
2420 if (ztest_random(2) == 0)
2421 io_type = ZTEST_IO_WRITE_TAG;
2422
2423 rw_enter(&zd->zd_zilog_lock, RW_READER);
2424
2425 switch (io_type) {
2426
2427 case ZTEST_IO_WRITE_TAG:
2428 ztest_bt_generate(&wbt, zd->zd_os, object, doi.doi_dnodesize,
2429 offset, 0, 0, 0);
2430 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
2431 break;
2432
2433 case ZTEST_IO_WRITE_PATTERN:
2434 (void) memset(data, 'a' + (object + offset) % 5, blocksize);
2435 if (ztest_random(2) == 0) {
2436 /*
2437 * Induce fletcher2 collisions to ensure that
2438 * zio_ddt_collision() detects and resolves them
2439 * when using fletcher2-verify for deduplication.
2440 */
2441 ((uint64_t *)data)[0] ^= 1ULL << 63;
2442 ((uint64_t *)data)[4] ^= 1ULL << 63;
2443 }
2444 (void) ztest_write(zd, object, offset, blocksize, data);
2445 break;
2446
2447 case ZTEST_IO_WRITE_ZEROES:
2448 bzero(data, blocksize);
2449 (void) ztest_write(zd, object, offset, blocksize, data);
2450 break;
2451
2452 case ZTEST_IO_TRUNCATE:
2453 (void) ztest_truncate(zd, object, offset, blocksize);
2454 break;
2455
2456 case ZTEST_IO_SETATTR:
2457 (void) ztest_setattr(zd, object);
2458 break;
2459
2460 case ZTEST_IO_REWRITE:
2461 rw_enter(&ztest_name_lock, RW_READER);
2462 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2463 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
2464 B_FALSE);
2465 VERIFY(err == 0 || err == ENOSPC);
2466 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2467 ZFS_PROP_COMPRESSION,
2468 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION),
2469 B_FALSE);
2470 VERIFY(err == 0 || err == ENOSPC);
2471 rw_exit(&ztest_name_lock);
2472
2473 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data,
2474 DMU_READ_NO_PREFETCH));
2475
2476 (void) ztest_write(zd, object, offset, blocksize, data);
2477 break;
2478 }
2479
2480 rw_exit(&zd->zd_zilog_lock);
2481
2482 umem_free(data, blocksize);
2483 }
2484
2485 /*
2486 * Initialize an object description template.
2487 */
2488 static void
ztest_od_init(ztest_od_t * od,uint64_t id,char * tag,uint64_t index,dmu_object_type_t type,uint64_t blocksize,uint64_t dnodesize,uint64_t gen)2489 ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index,
2490 dmu_object_type_t type, uint64_t blocksize, uint64_t dnodesize,
2491 uint64_t gen)
2492 {
2493 od->od_dir = ZTEST_DIROBJ;
2494 od->od_object = 0;
2495
2496 od->od_crtype = type;
2497 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
2498 od->od_crdnodesize = dnodesize ? dnodesize : ztest_random_dnodesize();
2499 od->od_crgen = gen;
2500
2501 od->od_type = DMU_OT_NONE;
2502 od->od_blocksize = 0;
2503 od->od_gen = 0;
2504
2505 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]",
2506 tag, (int64_t)id, index);
2507 }
2508
2509 /*
2510 * Lookup or create the objects for a test using the od template.
2511 * If the objects do not all exist, or if 'remove' is specified,
2512 * remove any existing objects and create new ones. Otherwise,
2513 * use the existing objects.
2514 */
2515 static int
ztest_object_init(ztest_ds_t * zd,ztest_od_t * od,size_t size,boolean_t remove)2516 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
2517 {
2518 int count = size / sizeof (*od);
2519 int rv = 0;
2520
2521 mutex_enter(&zd->zd_dirobj_lock);
2522 if ((ztest_lookup(zd, od, count) != 0 || remove) &&
2523 (ztest_remove(zd, od, count) != 0 ||
2524 ztest_create(zd, od, count) != 0))
2525 rv = -1;
2526 zd->zd_od = od;
2527 mutex_exit(&zd->zd_dirobj_lock);
2528
2529 return (rv);
2530 }
2531
2532 /* ARGSUSED */
2533 void
ztest_zil_commit(ztest_ds_t * zd,uint64_t id)2534 ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
2535 {
2536 zilog_t *zilog = zd->zd_zilog;
2537
2538 rw_enter(&zd->zd_zilog_lock, RW_READER);
2539
2540 zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
2541
2542 /*
2543 * Remember the committed values in zd, which is in parent/child
2544 * shared memory. If we die, the next iteration of ztest_run()
2545 * will verify that the log really does contain this record.
2546 */
2547 mutex_enter(&zilog->zl_lock);
2548 ASSERT(zd->zd_shared != NULL);
2549 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq);
2550 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq;
2551 mutex_exit(&zilog->zl_lock);
2552
2553 rw_exit(&zd->zd_zilog_lock);
2554 }
2555
2556 /*
2557 * This function is designed to simulate the operations that occur during a
2558 * mount/unmount operation. We hold the dataset across these operations in an
2559 * attempt to expose any implicit assumptions about ZIL management.
2560 */
2561 /* ARGSUSED */
2562 void
ztest_zil_remount(ztest_ds_t * zd,uint64_t id)2563 ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
2564 {
2565 objset_t *os = zd->zd_os;
2566
2567 /*
2568 * We grab the zd_dirobj_lock to ensure that no other thread is
2569 * updating the zil (i.e. adding in-memory log records) and the
2570 * zd_zilog_lock to block any I/O.
2571 */
2572 mutex_enter(&zd->zd_dirobj_lock);
2573 rw_enter(&zd->zd_zilog_lock, RW_WRITER);
2574
2575 /* zfsvfs_teardown() */
2576 zil_close(zd->zd_zilog);
2577
2578 /* zfsvfs_setup() */
2579 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog);
2580 zil_replay(os, zd, ztest_replay_vector);
2581
2582 rw_exit(&zd->zd_zilog_lock);
2583 mutex_exit(&zd->zd_dirobj_lock);
2584 }
2585
2586 /*
2587 * Verify that we can't destroy an active pool, create an existing pool,
2588 * or create a pool with a bad vdev spec.
2589 */
2590 /* ARGSUSED */
2591 void
ztest_spa_create_destroy(ztest_ds_t * zd,uint64_t id)2592 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
2593 {
2594 ztest_shared_opts_t *zo = &ztest_opts;
2595 spa_t *spa;
2596 nvlist_t *nvroot;
2597
2598 if (zo->zo_mmp_test)
2599 return;
2600
2601 /*
2602 * Attempt to create using a bad file.
2603 */
2604 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
2605 VERIFY3U(ENOENT, ==,
2606 spa_create("ztest_bad_file", nvroot, NULL, NULL, NULL));
2607 nvlist_free(nvroot);
2608
2609 /*
2610 * Attempt to create using a bad mirror.
2611 */
2612 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 2, 1);
2613 VERIFY3U(ENOENT, ==,
2614 spa_create("ztest_bad_mirror", nvroot, NULL, NULL, NULL));
2615 nvlist_free(nvroot);
2616
2617 /*
2618 * Attempt to create an existing pool. It shouldn't matter
2619 * what's in the nvroot; we should fail with EEXIST.
2620 */
2621 rw_enter(&ztest_name_lock, RW_READER);
2622 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
2623 VERIFY3U(EEXIST, ==,
2624 spa_create(zo->zo_pool, nvroot, NULL, NULL, NULL));
2625 nvlist_free(nvroot);
2626 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG));
2627 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool));
2628 spa_close(spa, FTAG);
2629
2630 rw_exit(&ztest_name_lock);
2631 }
2632
2633 /*
2634 * Start and then stop the MMP threads to ensure the startup and shutdown code
2635 * works properly. Actual protection and property-related code tested via ZTS.
2636 */
2637 /* ARGSUSED */
2638 void
ztest_mmp_enable_disable(ztest_ds_t * zd,uint64_t id)2639 ztest_mmp_enable_disable(ztest_ds_t *zd, uint64_t id)
2640 {
2641 ztest_shared_opts_t *zo = &ztest_opts;
2642 spa_t *spa = ztest_spa;
2643
2644 if (zo->zo_mmp_test)
2645 return;
2646
2647 /*
2648 * Since enabling MMP involves setting a property, it could not be done
2649 * while the pool is suspended.
2650 */
2651 if (spa_suspended(spa))
2652 return;
2653
2654 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2655 mutex_enter(&spa->spa_props_lock);
2656
2657 zfs_multihost_fail_intervals = 0;
2658
2659 if (!spa_multihost(spa)) {
2660 spa->spa_multihost = B_TRUE;
2661 mmp_thread_start(spa);
2662 }
2663
2664 mutex_exit(&spa->spa_props_lock);
2665 spa_config_exit(spa, SCL_CONFIG, FTAG);
2666
2667 txg_wait_synced(spa_get_dsl(spa), 0);
2668 mmp_signal_all_threads();
2669 txg_wait_synced(spa_get_dsl(spa), 0);
2670
2671 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2672 mutex_enter(&spa->spa_props_lock);
2673
2674 if (spa_multihost(spa)) {
2675 mmp_thread_stop(spa);
2676 spa->spa_multihost = B_FALSE;
2677 }
2678
2679 mutex_exit(&spa->spa_props_lock);
2680 spa_config_exit(spa, SCL_CONFIG, FTAG);
2681 }
2682
2683 /* ARGSUSED */
2684 void
ztest_spa_upgrade(ztest_ds_t * zd,uint64_t id)2685 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
2686 {
2687 spa_t *spa;
2688 uint64_t initial_version = SPA_VERSION_INITIAL;
2689 uint64_t version, newversion;
2690 nvlist_t *nvroot, *props;
2691 char *name;
2692
2693 if (ztest_opts.zo_mmp_test)
2694 return;
2695
2696 mutex_enter(&ztest_vdev_lock);
2697 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool);
2698
2699 /*
2700 * Clean up from previous runs.
2701 */
2702 (void) spa_destroy(name);
2703
2704 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0,
2705 NULL, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1);
2706
2707 /*
2708 * If we're configuring a RAIDZ device then make sure that the
2709 * the initial version is capable of supporting that feature.
2710 */
2711 switch (ztest_opts.zo_raidz_parity) {
2712 case 0:
2713 case 1:
2714 initial_version = SPA_VERSION_INITIAL;
2715 break;
2716 case 2:
2717 initial_version = SPA_VERSION_RAIDZ2;
2718 break;
2719 case 3:
2720 initial_version = SPA_VERSION_RAIDZ3;
2721 break;
2722 }
2723
2724 /*
2725 * Create a pool with a spa version that can be upgraded. Pick
2726 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES.
2727 */
2728 do {
2729 version = ztest_random_spa_version(initial_version);
2730 } while (version > SPA_VERSION_BEFORE_FEATURES);
2731
2732 props = fnvlist_alloc();
2733 fnvlist_add_uint64(props,
2734 zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
2735 VERIFY0(spa_create(name, nvroot, props, NULL, NULL));
2736 fnvlist_free(nvroot);
2737 fnvlist_free(props);
2738
2739 VERIFY0(spa_open(name, &spa, FTAG));
2740 VERIFY3U(spa_version(spa), ==, version);
2741 newversion = ztest_random_spa_version(version + 1);
2742
2743 if (ztest_opts.zo_verbose >= 4) {
2744 (void) printf("upgrading spa version from %llu to %llu\n",
2745 (u_longlong_t)version, (u_longlong_t)newversion);
2746 }
2747
2748 spa_upgrade(spa, newversion);
2749 VERIFY3U(spa_version(spa), >, version);
2750 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config,
2751 zpool_prop_to_name(ZPOOL_PROP_VERSION)));
2752 spa_close(spa, FTAG);
2753
2754 strfree(name);
2755 mutex_exit(&ztest_vdev_lock);
2756 }
2757
2758 static void
ztest_spa_checkpoint(spa_t * spa)2759 ztest_spa_checkpoint(spa_t *spa)
2760 {
2761 ASSERT(MUTEX_HELD(&ztest_checkpoint_lock));
2762
2763 int error = spa_checkpoint(spa->spa_name);
2764
2765 switch (error) {
2766 case 0:
2767 case ZFS_ERR_DEVRM_IN_PROGRESS:
2768 case ZFS_ERR_DISCARDING_CHECKPOINT:
2769 case ZFS_ERR_CHECKPOINT_EXISTS:
2770 break;
2771 case ENOSPC:
2772 ztest_record_enospc(FTAG);
2773 break;
2774 default:
2775 fatal(0, "spa_checkpoint(%s) = %d", spa->spa_name, error);
2776 }
2777 }
2778
2779 static void
ztest_spa_discard_checkpoint(spa_t * spa)2780 ztest_spa_discard_checkpoint(spa_t *spa)
2781 {
2782 ASSERT(MUTEX_HELD(&ztest_checkpoint_lock));
2783
2784 int error = spa_checkpoint_discard(spa->spa_name);
2785
2786 switch (error) {
2787 case 0:
2788 case ZFS_ERR_DISCARDING_CHECKPOINT:
2789 case ZFS_ERR_NO_CHECKPOINT:
2790 break;
2791 default:
2792 fatal(0, "spa_discard_checkpoint(%s) = %d",
2793 spa->spa_name, error);
2794 }
2795
2796 }
2797
2798 /* ARGSUSED */
2799 void
ztest_spa_checkpoint_create_discard(ztest_ds_t * zd,uint64_t id)2800 ztest_spa_checkpoint_create_discard(ztest_ds_t *zd, uint64_t id)
2801 {
2802 spa_t *spa = ztest_spa;
2803
2804 mutex_enter(&ztest_checkpoint_lock);
2805 if (ztest_random(2) == 0) {
2806 ztest_spa_checkpoint(spa);
2807 } else {
2808 ztest_spa_discard_checkpoint(spa);
2809 }
2810 mutex_exit(&ztest_checkpoint_lock);
2811 }
2812
2813
2814 static vdev_t *
vdev_lookup_by_path(vdev_t * vd,const char * path)2815 vdev_lookup_by_path(vdev_t *vd, const char *path)
2816 {
2817 vdev_t *mvd;
2818
2819 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
2820 return (vd);
2821
2822 for (int c = 0; c < vd->vdev_children; c++)
2823 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
2824 NULL)
2825 return (mvd);
2826
2827 return (NULL);
2828 }
2829
2830 static int
spa_num_top_vdevs(spa_t * spa)2831 spa_num_top_vdevs(spa_t *spa)
2832 {
2833 vdev_t *rvd = spa->spa_root_vdev;
2834 ASSERT3U(spa_config_held(spa, SCL_VDEV, RW_READER), ==, SCL_VDEV);
2835 return (rvd->vdev_children);
2836 }
2837
2838 /*
2839 * Verify that vdev_add() works as expected.
2840 */
2841 /* ARGSUSED */
2842 void
ztest_vdev_add_remove(ztest_ds_t * zd,uint64_t id)2843 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
2844 {
2845 ztest_shared_t *zs = ztest_shared;
2846 spa_t *spa = ztest_spa;
2847 uint64_t leaves;
2848 uint64_t guid;
2849 nvlist_t *nvroot;
2850 int error;
2851
2852 if (ztest_opts.zo_mmp_test)
2853 return;
2854
2855 mutex_enter(&ztest_vdev_lock);
2856 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz;
2857
2858 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2859
2860 ztest_shared->zs_vdev_next_leaf = spa_num_top_vdevs(spa) * leaves;
2861
2862 /*
2863 * If we have slogs then remove them 1/4 of the time.
2864 */
2865 if (spa_has_slogs(spa) && ztest_random(4) == 0) {
2866 metaslab_group_t *mg;
2867
2868 /*
2869 * find the first real slog in log allocation class
2870 */
2871 mg = spa_log_class(spa)->mc_rotor;
2872 while (!mg->mg_vd->vdev_islog)
2873 mg = mg->mg_next;
2874
2875 guid = mg->mg_vd->vdev_guid;
2876
2877 spa_config_exit(spa, SCL_VDEV, FTAG);
2878
2879 /*
2880 * We have to grab the zs_name_lock as writer to
2881 * prevent a race between removing a slog (dmu_objset_find)
2882 * and destroying a dataset. Removing the slog will
2883 * grab a reference on the dataset which may cause
2884 * dmu_objset_destroy() to fail with EBUSY thus
2885 * leaving the dataset in an inconsistent state.
2886 */
2887 rw_enter(&ztest_name_lock, RW_WRITER);
2888 error = spa_vdev_remove(spa, guid, B_FALSE);
2889 rw_exit(&ztest_name_lock);
2890
2891 switch (error) {
2892 case 0:
2893 case EEXIST:
2894 case ZFS_ERR_CHECKPOINT_EXISTS:
2895 case ZFS_ERR_DISCARDING_CHECKPOINT:
2896 break;
2897 default:
2898 fatal(0, "spa_vdev_remove() = %d", error);
2899 }
2900 } else {
2901 spa_config_exit(spa, SCL_VDEV, FTAG);
2902
2903 /*
2904 * Make 1/4 of the devices be log devices
2905 */
2906 nvroot = make_vdev_root(NULL, NULL, NULL,
2907 ztest_opts.zo_vdev_size, 0, (ztest_random(4) == 0) ?
2908 "log" : NULL, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
2909
2910 error = spa_vdev_add(spa, nvroot);
2911 nvlist_free(nvroot);
2912
2913 switch (error) {
2914 case 0:
2915 break;
2916 case ENOSPC:
2917 ztest_record_enospc("spa_vdev_add");
2918 break;
2919 default:
2920 fatal(0, "spa_vdev_add() = %d", error);
2921 }
2922 }
2923
2924 mutex_exit(&ztest_vdev_lock);
2925 }
2926
2927 /* ARGSUSED */
2928 void
ztest_vdev_class_add(ztest_ds_t * zd,uint64_t id)2929 ztest_vdev_class_add(ztest_ds_t *zd, uint64_t id)
2930 {
2931 ztest_shared_t *zs = ztest_shared;
2932 spa_t *spa = ztest_spa;
2933 uint64_t leaves;
2934 nvlist_t *nvroot;
2935 const char *class = (ztest_random(2) == 0) ?
2936 VDEV_ALLOC_BIAS_SPECIAL : VDEV_ALLOC_BIAS_DEDUP;
2937 int error;
2938
2939 /*
2940 * By default add a special vdev 50% of the time
2941 */
2942 if ((ztest_opts.zo_special_vdevs == ZTEST_VDEV_CLASS_OFF) ||
2943 (ztest_opts.zo_special_vdevs == ZTEST_VDEV_CLASS_RND &&
2944 ztest_random(2) == 0)) {
2945 return;
2946 }
2947
2948 mutex_enter(&ztest_vdev_lock);
2949
2950 /* Only test with mirrors */
2951 if (zs->zs_mirrors < 2) {
2952 mutex_exit(&ztest_vdev_lock);
2953 return;
2954 }
2955
2956 /* requires feature@allocation_classes */
2957 if (!spa_feature_is_enabled(spa, SPA_FEATURE_ALLOCATION_CLASSES)) {
2958 mutex_exit(&ztest_vdev_lock);
2959 return;
2960 }
2961
2962 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz;
2963
2964 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2965 ztest_shared->zs_vdev_next_leaf = spa_num_top_vdevs(spa) * leaves;
2966 spa_config_exit(spa, SCL_VDEV, FTAG);
2967
2968 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
2969 class, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
2970
2971 error = spa_vdev_add(spa, nvroot);
2972 nvlist_free(nvroot);
2973
2974 if (error == ENOSPC)
2975 ztest_record_enospc("spa_vdev_add");
2976 else if (error != 0)
2977 fatal(0, "spa_vdev_add() = %d", error);
2978
2979 /*
2980 * 50% of the time allow small blocks in the special class
2981 */
2982 if (error == 0 &&
2983 spa_special_class(spa)->mc_groups == 1 && ztest_random(2) == 0) {
2984 if (ztest_opts.zo_verbose >= 3)
2985 (void) printf("Enabling special VDEV small blocks\n");
2986 (void) ztest_dsl_prop_set_uint64(zd->zd_name,
2987 ZFS_PROP_SPECIAL_SMALL_BLOCKS, 32768, B_FALSE);
2988 }
2989
2990 mutex_exit(&ztest_vdev_lock);
2991
2992 if (ztest_opts.zo_verbose >= 3) {
2993 metaslab_class_t *mc;
2994
2995 if (strcmp(class, VDEV_ALLOC_BIAS_SPECIAL) == 0)
2996 mc = spa_special_class(spa);
2997 else
2998 mc = spa_dedup_class(spa);
2999 (void) printf("Added a %s mirrored vdev (of %d)\n",
3000 class, (int)mc->mc_groups);
3001 }
3002 }
3003
3004 /*
3005 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
3006 */
3007 /* ARGSUSED */
3008 void
ztest_vdev_aux_add_remove(ztest_ds_t * zd,uint64_t id)3009 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
3010 {
3011 ztest_shared_t *zs = ztest_shared;
3012 spa_t *spa = ztest_spa;
3013 vdev_t *rvd = spa->spa_root_vdev;
3014 spa_aux_vdev_t *sav;
3015 char *aux;
3016 uint64_t guid = 0;
3017 int error;
3018
3019 if (ztest_opts.zo_mmp_test)
3020 return;
3021
3022 if (ztest_random(2) == 0) {
3023 sav = &spa->spa_spares;
3024 aux = ZPOOL_CONFIG_SPARES;
3025 } else {
3026 sav = &spa->spa_l2cache;
3027 aux = ZPOOL_CONFIG_L2CACHE;
3028 }
3029
3030 mutex_enter(&ztest_vdev_lock);
3031
3032 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3033
3034 if (sav->sav_count != 0 && ztest_random(4) == 0) {
3035 /*
3036 * Pick a random device to remove.
3037 */
3038 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid;
3039 } else {
3040 /*
3041 * Find an unused device we can add.
3042 */
3043 zs->zs_vdev_aux = 0;
3044 for (;;) {
3045 char path[MAXPATHLEN];
3046 int c;
3047 (void) snprintf(path, sizeof (path), ztest_aux_template,
3048 ztest_opts.zo_dir, ztest_opts.zo_pool, aux,
3049 zs->zs_vdev_aux);
3050 for (c = 0; c < sav->sav_count; c++)
3051 if (strcmp(sav->sav_vdevs[c]->vdev_path,
3052 path) == 0)
3053 break;
3054 if (c == sav->sav_count &&
3055 vdev_lookup_by_path(rvd, path) == NULL)
3056 break;
3057 zs->zs_vdev_aux++;
3058 }
3059 }
3060
3061 spa_config_exit(spa, SCL_VDEV, FTAG);
3062
3063 if (guid == 0) {
3064 /*
3065 * Add a new device.
3066 */
3067 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL,
3068 (ztest_opts.zo_vdev_size * 5) / 4, 0, NULL, 0, 0, 1);
3069 error = spa_vdev_add(spa, nvroot);
3070
3071 switch (error) {
3072 case 0:
3073 break;
3074 default:
3075 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error);
3076 }
3077 nvlist_free(nvroot);
3078 } else {
3079 /*
3080 * Remove an existing device. Sometimes, dirty its
3081 * vdev state first to make sure we handle removal
3082 * of devices that have pending state changes.
3083 */
3084 if (ztest_random(2) == 0)
3085 (void) vdev_online(spa, guid, 0, NULL);
3086
3087 error = spa_vdev_remove(spa, guid, B_FALSE);
3088
3089 switch (error) {
3090 case 0:
3091 case EBUSY:
3092 case ZFS_ERR_CHECKPOINT_EXISTS:
3093 case ZFS_ERR_DISCARDING_CHECKPOINT:
3094 break;
3095 default:
3096 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error);
3097 }
3098 }
3099
3100 mutex_exit(&ztest_vdev_lock);
3101 }
3102
3103 /*
3104 * split a pool if it has mirror tlvdevs
3105 */
3106 /* ARGSUSED */
3107 void
ztest_split_pool(ztest_ds_t * zd,uint64_t id)3108 ztest_split_pool(ztest_ds_t *zd, uint64_t id)
3109 {
3110 ztest_shared_t *zs = ztest_shared;
3111 spa_t *spa = ztest_spa;
3112 vdev_t *rvd = spa->spa_root_vdev;
3113 nvlist_t *tree, **child, *config, *split, **schild;
3114 uint_t c, children, schildren = 0, lastlogid = 0;
3115 int error = 0;
3116
3117 if (ztest_opts.zo_mmp_test)
3118 return;
3119
3120 mutex_enter(&ztest_vdev_lock);
3121
3122 /* ensure we have a useable config; mirrors of raidz aren't supported */
3123 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) {
3124 mutex_exit(&ztest_vdev_lock);
3125 return;
3126 }
3127
3128 /* clean up the old pool, if any */
3129 (void) spa_destroy("splitp");
3130
3131 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3132
3133 /* generate a config from the existing config */
3134 mutex_enter(&spa->spa_props_lock);
3135 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE,
3136 &tree) == 0);
3137 mutex_exit(&spa->spa_props_lock);
3138
3139 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
3140 &children) == 0);
3141
3142 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *));
3143 for (c = 0; c < children; c++) {
3144 vdev_t *tvd = rvd->vdev_child[c];
3145 nvlist_t **mchild;
3146 uint_t mchildren;
3147
3148 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
3149 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME,
3150 0) == 0);
3151 VERIFY(nvlist_add_string(schild[schildren],
3152 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0);
3153 VERIFY(nvlist_add_uint64(schild[schildren],
3154 ZPOOL_CONFIG_IS_HOLE, 1) == 0);
3155 if (lastlogid == 0)
3156 lastlogid = schildren;
3157 ++schildren;
3158 continue;
3159 }
3160 lastlogid = 0;
3161 VERIFY(nvlist_lookup_nvlist_array(child[c],
3162 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
3163 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0);
3164 }
3165
3166 /* OK, create a config that can be used to split */
3167 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0);
3168 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE,
3169 VDEV_TYPE_ROOT) == 0);
3170 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild,
3171 lastlogid != 0 ? lastlogid : schildren) == 0);
3172
3173 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0);
3174 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0);
3175
3176 for (c = 0; c < schildren; c++)
3177 nvlist_free(schild[c]);
3178 free(schild);
3179 nvlist_free(split);
3180
3181 spa_config_exit(spa, SCL_VDEV, FTAG);
3182
3183 rw_enter(&ztest_name_lock, RW_WRITER);
3184 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
3185 rw_exit(&ztest_name_lock);
3186
3187 nvlist_free(config);
3188
3189 if (error == 0) {
3190 (void) printf("successful split - results:\n");
3191 mutex_enter(&spa_namespace_lock);
3192 show_pool_stats(spa);
3193 show_pool_stats(spa_lookup("splitp"));
3194 mutex_exit(&spa_namespace_lock);
3195 ++zs->zs_splits;
3196 --zs->zs_mirrors;
3197 }
3198 mutex_exit(&ztest_vdev_lock);
3199 }
3200
3201 /*
3202 * Verify that we can attach and detach devices.
3203 */
3204 /* ARGSUSED */
3205 void
ztest_vdev_attach_detach(ztest_ds_t * zd,uint64_t id)3206 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
3207 {
3208 ztest_shared_t *zs = ztest_shared;
3209 spa_t *spa = ztest_spa;
3210 spa_aux_vdev_t *sav = &spa->spa_spares;
3211 vdev_t *rvd = spa->spa_root_vdev;
3212 vdev_t *oldvd, *newvd, *pvd;
3213 nvlist_t *root;
3214 uint64_t leaves;
3215 uint64_t leaf, top;
3216 uint64_t ashift = ztest_get_ashift();
3217 uint64_t oldguid, pguid;
3218 uint64_t oldsize, newsize;
3219 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN];
3220 int replacing;
3221 int oldvd_has_siblings = B_FALSE;
3222 int newvd_is_spare = B_FALSE;
3223 int oldvd_is_log;
3224 int error, expected_error;
3225
3226 if (ztest_opts.zo_mmp_test)
3227 return;
3228
3229 mutex_enter(&ztest_vdev_lock);
3230 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
3231
3232 spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
3233
3234 /*
3235 * If a vdev is in the process of being removed, its removal may
3236 * finish while we are in progress, leading to an unexpected error
3237 * value. Don't bother trying to attach while we are in the middle
3238 * of removal.
3239 */
3240 if (ztest_device_removal_active) {
3241 spa_config_exit(spa, SCL_ALL, FTAG);
3242 mutex_exit(&ztest_vdev_lock);
3243 return;
3244 }
3245
3246 /*
3247 * Decide whether to do an attach or a replace.
3248 */
3249 replacing = ztest_random(2);
3250
3251 /*
3252 * Pick a random top-level vdev.
3253 */
3254 top = ztest_random_vdev_top(spa, B_TRUE);
3255
3256 /*
3257 * Pick a random leaf within it.
3258 */
3259 leaf = ztest_random(leaves);
3260
3261 /*
3262 * Locate this vdev.
3263 */
3264 oldvd = rvd->vdev_child[top];
3265
3266 /* pick a child from the mirror */
3267 if (zs->zs_mirrors >= 1) {
3268 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops);
3269 ASSERT(oldvd->vdev_children >= zs->zs_mirrors);
3270 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz];
3271 }
3272
3273 /* pick a child out of the raidz group */
3274 if (ztest_opts.zo_raidz > 1) {
3275 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops);
3276 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz);
3277 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz];
3278 }
3279
3280 /*
3281 * If we're already doing an attach or replace, oldvd may be a
3282 * mirror vdev -- in which case, pick a random child.
3283 */
3284 while (oldvd->vdev_children != 0) {
3285 oldvd_has_siblings = B_TRUE;
3286 ASSERT(oldvd->vdev_children >= 2);
3287 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];
3288 }
3289
3290 oldguid = oldvd->vdev_guid;
3291 oldsize = vdev_get_min_asize(oldvd);
3292 oldvd_is_log = oldvd->vdev_top->vdev_islog;
3293 (void) strcpy(oldpath, oldvd->vdev_path);
3294 pvd = oldvd->vdev_parent;
3295 pguid = pvd->vdev_guid;
3296
3297 /*
3298 * If oldvd has siblings, then half of the time, detach it.
3299 */
3300 if (oldvd_has_siblings && ztest_random(2) == 0) {
3301 spa_config_exit(spa, SCL_ALL, FTAG);
3302 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
3303 if (error != 0 && error != ENODEV && error != EBUSY &&
3304 error != ENOTSUP && error != ZFS_ERR_CHECKPOINT_EXISTS &&
3305 error != ZFS_ERR_DISCARDING_CHECKPOINT)
3306 fatal(0, "detach (%s) returned %d", oldpath, error);
3307 mutex_exit(&ztest_vdev_lock);
3308 return;
3309 }
3310
3311 /*
3312 * For the new vdev, choose with equal probability between the two
3313 * standard paths (ending in either 'a' or 'b') or a random hot spare.
3314 */
3315 if (sav->sav_count != 0 && ztest_random(3) == 0) {
3316 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)];
3317 newvd_is_spare = B_TRUE;
3318 (void) strcpy(newpath, newvd->vdev_path);
3319 } else {
3320 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template,
3321 ztest_opts.zo_dir, ztest_opts.zo_pool,
3322 top * leaves + leaf);
3323 if (ztest_random(2) == 0)
3324 newpath[strlen(newpath) - 1] = 'b';
3325 newvd = vdev_lookup_by_path(rvd, newpath);
3326 }
3327
3328 if (newvd) {
3329 /*
3330 * Reopen to ensure the vdev's asize field isn't stale.
3331 */
3332 vdev_reopen(newvd);
3333 newsize = vdev_get_min_asize(newvd);
3334 } else {
3335 /*
3336 * Make newsize a little bigger or smaller than oldsize.
3337 * If it's smaller, the attach should fail.
3338 * If it's larger, and we're doing a replace,
3339 * we should get dynamic LUN growth when we're done.
3340 */
3341 newsize = 10 * oldsize / (9 + ztest_random(3));
3342 }
3343
3344 /*
3345 * If pvd is not a mirror or root, the attach should fail with ENOTSUP,
3346 * unless it's a replace; in that case any non-replacing parent is OK.
3347 *
3348 * If newvd is already part of the pool, it should fail with EBUSY.
3349 *
3350 * If newvd is too small, it should fail with EOVERFLOW.
3351 */
3352 if (pvd->vdev_ops != &vdev_mirror_ops &&
3353 pvd->vdev_ops != &vdev_root_ops && (!replacing ||
3354 pvd->vdev_ops == &vdev_replacing_ops ||
3355 pvd->vdev_ops == &vdev_spare_ops))
3356 expected_error = ENOTSUP;
3357 else if (newvd_is_spare && (!replacing || oldvd_is_log))
3358 expected_error = ENOTSUP;
3359 else if (newvd == oldvd)
3360 expected_error = replacing ? 0 : EBUSY;
3361 else if (vdev_lookup_by_path(rvd, newpath) != NULL)
3362 expected_error = EBUSY;
3363 else if (newsize < oldsize)
3364 expected_error = EOVERFLOW;
3365 else if (ashift > oldvd->vdev_top->vdev_ashift)
3366 expected_error = EDOM;
3367 else
3368 expected_error = 0;
3369
3370 spa_config_exit(spa, SCL_ALL, FTAG);
3371
3372 /*
3373 * Build the nvlist describing newpath.
3374 */
3375 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0,
3376 ashift, NULL, 0, 0, 1);
3377
3378 error = spa_vdev_attach(spa, oldguid, root, replacing);
3379
3380 nvlist_free(root);
3381
3382 /*
3383 * If our parent was the replacing vdev, but the replace completed,
3384 * then instead of failing with ENOTSUP we may either succeed,
3385 * fail with ENODEV, or fail with EOVERFLOW.
3386 */
3387 if (expected_error == ENOTSUP &&
3388 (error == 0 || error == ENODEV || error == EOVERFLOW))
3389 expected_error = error;
3390
3391 /*
3392 * If someone grew the LUN, the replacement may be too small.
3393 */
3394 if (error == EOVERFLOW || error == EBUSY)
3395 expected_error = error;
3396
3397 if (error == ZFS_ERR_CHECKPOINT_EXISTS ||
3398 error == ZFS_ERR_DISCARDING_CHECKPOINT)
3399 expected_error = error;
3400
3401 /* XXX workaround 6690467 */
3402 if (error != expected_error && expected_error != EBUSY) {
3403 fatal(0, "attach (%s %llu, %s %llu, %d) "
3404 "returned %d, expected %d",
3405 oldpath, oldsize, newpath,
3406 newsize, replacing, error, expected_error);
3407 }
3408
3409 mutex_exit(&ztest_vdev_lock);
3410 }
3411
3412 /* ARGSUSED */
3413 void
ztest_device_removal(ztest_ds_t * zd,uint64_t id)3414 ztest_device_removal(ztest_ds_t *zd, uint64_t id)
3415 {
3416 spa_t *spa = ztest_spa;
3417 vdev_t *vd;
3418 uint64_t guid;
3419 int error;
3420
3421 mutex_enter(&ztest_vdev_lock);
3422
3423 if (ztest_device_removal_active) {
3424 mutex_exit(&ztest_vdev_lock);
3425 return;
3426 }
3427
3428 /*
3429 * Remove a random top-level vdev and wait for removal to finish.
3430 */
3431 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3432 vd = vdev_lookup_top(spa, ztest_random_vdev_top(spa, B_FALSE));
3433 guid = vd->vdev_guid;
3434 spa_config_exit(spa, SCL_VDEV, FTAG);
3435
3436 error = spa_vdev_remove(spa, guid, B_FALSE);
3437 if (error == 0) {
3438 ztest_device_removal_active = B_TRUE;
3439 mutex_exit(&ztest_vdev_lock);
3440
3441 while (spa->spa_vdev_removal != NULL)
3442 txg_wait_synced(spa_get_dsl(spa), 0);
3443 } else {
3444 mutex_exit(&ztest_vdev_lock);
3445 return;
3446 }
3447
3448 /*
3449 * The pool needs to be scrubbed after completing device removal.
3450 * Failure to do so may result in checksum errors due to the
3451 * strategy employed by ztest_fault_inject() when selecting which
3452 * offset are redundant and can be damaged.
3453 */
3454 error = spa_scan(spa, POOL_SCAN_SCRUB);
3455 if (error == 0) {
3456 while (dsl_scan_scrubbing(spa_get_dsl(spa)))
3457 txg_wait_synced(spa_get_dsl(spa), 0);
3458 }
3459
3460 mutex_enter(&ztest_vdev_lock);
3461 ztest_device_removal_active = B_FALSE;
3462 mutex_exit(&ztest_vdev_lock);
3463 }
3464
3465 /*
3466 * Callback function which expands the physical size of the vdev.
3467 */
3468 vdev_t *
grow_vdev(vdev_t * vd,void * arg)3469 grow_vdev(vdev_t *vd, void *arg)
3470 {
3471 spa_t *spa = vd->vdev_spa;
3472 size_t *newsize = arg;
3473 size_t fsize;
3474 int fd;
3475
3476 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
3477 ASSERT(vd->vdev_ops->vdev_op_leaf);
3478
3479 if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
3480 return (vd);
3481
3482 fsize = lseek(fd, 0, SEEK_END);
3483 (void) ftruncate(fd, *newsize);
3484
3485 if (ztest_opts.zo_verbose >= 6) {
3486 (void) printf("%s grew from %lu to %lu bytes\n",
3487 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
3488 }
3489 (void) close(fd);
3490 return (NULL);
3491 }
3492
3493 /*
3494 * Callback function which expands a given vdev by calling vdev_online().
3495 */
3496 /* ARGSUSED */
3497 vdev_t *
online_vdev(vdev_t * vd,void * arg)3498 online_vdev(vdev_t *vd, void *arg)
3499 {
3500 spa_t *spa = vd->vdev_spa;
3501 vdev_t *tvd = vd->vdev_top;
3502 uint64_t guid = vd->vdev_guid;
3503 uint64_t generation = spa->spa_config_generation + 1;
3504 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
3505 int error;
3506
3507 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
3508 ASSERT(vd->vdev_ops->vdev_op_leaf);
3509
3510 /* Calling vdev_online will initialize the new metaslabs */
3511 spa_config_exit(spa, SCL_STATE, spa);
3512 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
3513 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3514
3515 /*
3516 * If vdev_online returned an error or the underlying vdev_open
3517 * failed then we abort the expand. The only way to know that
3518 * vdev_open fails is by checking the returned newstate.
3519 */
3520 if (error || newstate != VDEV_STATE_HEALTHY) {
3521 if (ztest_opts.zo_verbose >= 5) {
3522 (void) printf("Unable to expand vdev, state %llu, "
3523 "error %d\n", (u_longlong_t)newstate, error);
3524 }
3525 return (vd);
3526 }
3527 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
3528
3529 /*
3530 * Since we dropped the lock we need to ensure that we're
3531 * still talking to the original vdev. It's possible this
3532 * vdev may have been detached/replaced while we were
3533 * trying to online it.
3534 */
3535 if (generation != spa->spa_config_generation) {
3536 if (ztest_opts.zo_verbose >= 5) {
3537 (void) printf("vdev configuration has changed, "
3538 "guid %llu, state %llu, expected gen %llu, "
3539 "got gen %llu\n",
3540 (u_longlong_t)guid,
3541 (u_longlong_t)tvd->vdev_state,
3542 (u_longlong_t)generation,
3543 (u_longlong_t)spa->spa_config_generation);
3544 }
3545 return (vd);
3546 }
3547 return (NULL);
3548 }
3549
3550 /*
3551 * Traverse the vdev tree calling the supplied function.
3552 * We continue to walk the tree until we either have walked all
3553 * children or we receive a non-NULL return from the callback.
3554 * If a NULL callback is passed, then we just return back the first
3555 * leaf vdev we encounter.
3556 */
3557 vdev_t *
vdev_walk_tree(vdev_t * vd,vdev_t * (* func)(vdev_t *,void *),void * arg)3558 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
3559 {
3560 if (vd->vdev_ops->vdev_op_leaf) {
3561 if (func == NULL)
3562 return (vd);
3563 else
3564 return (func(vd, arg));
3565 }
3566
3567 for (uint_t c = 0; c < vd->vdev_children; c++) {
3568 vdev_t *cvd = vd->vdev_child[c];
3569 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
3570 return (cvd);
3571 }
3572 return (NULL);
3573 }
3574
3575 /*
3576 * Verify that dynamic LUN growth works as expected.
3577 */
3578 /* ARGSUSED */
3579 void
ztest_vdev_LUN_growth(ztest_ds_t * zd,uint64_t id)3580 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
3581 {
3582 spa_t *spa = ztest_spa;
3583 vdev_t *vd, *tvd;
3584 metaslab_class_t *mc;
3585 metaslab_group_t *mg;
3586 size_t psize, newsize;
3587 uint64_t top;
3588 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
3589
3590 mutex_enter(&ztest_checkpoint_lock);
3591 mutex_enter(&ztest_vdev_lock);
3592 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3593
3594 /*
3595 * If there is a vdev removal in progress, it could complete while
3596 * we are running, in which case we would not be able to verify
3597 * that the metaslab_class space increased (because it decreases
3598 * when the device removal completes).
3599 */
3600 if (ztest_device_removal_active) {
3601 spa_config_exit(spa, SCL_STATE, spa);
3602 mutex_exit(&ztest_vdev_lock);
3603 mutex_exit(&ztest_checkpoint_lock);
3604 return;
3605 }
3606
3607 top = ztest_random_vdev_top(spa, B_TRUE);
3608
3609 tvd = spa->spa_root_vdev->vdev_child[top];
3610 mg = tvd->vdev_mg;
3611 mc = mg->mg_class;
3612 old_ms_count = tvd->vdev_ms_count;
3613 old_class_space = metaslab_class_get_space(mc);
3614
3615 /*
3616 * Determine the size of the first leaf vdev associated with
3617 * our top-level device.
3618 */
3619 vd = vdev_walk_tree(tvd, NULL, NULL);
3620 ASSERT3P(vd, !=, NULL);
3621 ASSERT(vd->vdev_ops->vdev_op_leaf);
3622
3623 psize = vd->vdev_psize;
3624
3625 /*
3626 * We only try to expand the vdev if it's healthy, less than 4x its
3627 * original size, and it has a valid psize.
3628 */
3629 if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
3630 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) {
3631 spa_config_exit(spa, SCL_STATE, spa);
3632 mutex_exit(&ztest_vdev_lock);
3633 mutex_exit(&ztest_checkpoint_lock);
3634 return;
3635 }
3636 ASSERT(psize > 0);
3637 newsize = psize + MAX(psize / 8, SPA_MAXBLOCKSIZE);
3638 ASSERT3U(newsize, >, psize);
3639
3640 if (ztest_opts.zo_verbose >= 6) {
3641 (void) printf("Expanding LUN %s from %lu to %lu\n",
3642 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
3643 }
3644
3645 /*
3646 * Growing the vdev is a two step process:
3647 * 1). expand the physical size (i.e. relabel)
3648 * 2). online the vdev to create the new metaslabs
3649 */
3650 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
3651 vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
3652 tvd->vdev_state != VDEV_STATE_HEALTHY) {
3653 if (ztest_opts.zo_verbose >= 5) {
3654 (void) printf("Could not expand LUN because "
3655 "the vdev configuration changed.\n");
3656 }
3657 spa_config_exit(spa, SCL_STATE, spa);
3658 mutex_exit(&ztest_vdev_lock);
3659 mutex_exit(&ztest_checkpoint_lock);
3660 return;
3661 }
3662
3663 spa_config_exit(spa, SCL_STATE, spa);
3664
3665 /*
3666 * Expanding the LUN will update the config asynchronously,
3667 * thus we must wait for the async thread to complete any
3668 * pending tasks before proceeding.
3669 */
3670 for (;;) {
3671 boolean_t done;
3672 mutex_enter(&spa->spa_async_lock);
3673 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
3674 mutex_exit(&spa->spa_async_lock);
3675 if (done)
3676 break;
3677 txg_wait_synced(spa_get_dsl(spa), 0);
3678 (void) poll(NULL, 0, 100);
3679 }
3680
3681 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3682
3683 tvd = spa->spa_root_vdev->vdev_child[top];
3684 new_ms_count = tvd->vdev_ms_count;
3685 new_class_space = metaslab_class_get_space(mc);
3686
3687 if (tvd->vdev_mg != mg || mg->mg_class != mc) {
3688 if (ztest_opts.zo_verbose >= 5) {
3689 (void) printf("Could not verify LUN expansion due to "
3690 "intervening vdev offline or remove.\n");
3691 }
3692 spa_config_exit(spa, SCL_STATE, spa);
3693 mutex_exit(&ztest_vdev_lock);
3694 mutex_exit(&ztest_checkpoint_lock);
3695 return;
3696 }
3697
3698 /*
3699 * Make sure we were able to grow the vdev.
3700 */
3701 if (new_ms_count <= old_ms_count) {
3702 fatal(0, "LUN expansion failed: ms_count %llu < %llu\n",
3703 old_ms_count, new_ms_count);
3704 }
3705
3706 /*
3707 * Make sure we were able to grow the pool.
3708 */
3709 if (new_class_space <= old_class_space) {
3710 fatal(0, "LUN expansion failed: class_space %llu < %llu\n",
3711 old_class_space, new_class_space);
3712 }
3713
3714 if (ztest_opts.zo_verbose >= 5) {
3715 char oldnumbuf[NN_NUMBUF_SZ], newnumbuf[NN_NUMBUF_SZ];
3716
3717 nicenum(old_class_space, oldnumbuf, sizeof (oldnumbuf));
3718 nicenum(new_class_space, newnumbuf, sizeof (newnumbuf));
3719 (void) printf("%s grew from %s to %s\n",
3720 spa->spa_name, oldnumbuf, newnumbuf);
3721 }
3722
3723 spa_config_exit(spa, SCL_STATE, spa);
3724 mutex_exit(&ztest_vdev_lock);
3725 mutex_exit(&ztest_checkpoint_lock);
3726 }
3727
3728 /*
3729 * Verify that dmu_objset_{create,destroy,open,close} work as expected.
3730 */
3731 /* ARGSUSED */
3732 static void
ztest_objset_create_cb(objset_t * os,void * arg,cred_t * cr,dmu_tx_t * tx)3733 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
3734 {
3735 /*
3736 * Create the objects common to all ztest datasets.
3737 */
3738 VERIFY(zap_create_claim(os, ZTEST_DIROBJ,
3739 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0);
3740 }
3741
3742 static int
ztest_dataset_create(char * dsname)3743 ztest_dataset_create(char *dsname)
3744 {
3745 int err;
3746 uint64_t rand;
3747 dsl_crypto_params_t *dcp = NULL;
3748
3749 /*
3750 * 50% of the time, we create encrypted datasets
3751 * using a random cipher suite and a hard-coded
3752 * wrapping key.
3753 */
3754 #ifdef WITHCRYPTO
3755 /*
3756 * Until the crypto framework is compiled in userland, the ztest using
3757 * crypto will not work.
3758 */
3759 rand = ztest_random(2);
3760 #else
3761 rand = 0;
3762 #endif
3763 if (rand != 0) {
3764 nvlist_t *crypto_args = fnvlist_alloc();
3765 nvlist_t *props = fnvlist_alloc();
3766
3767 /* slight bias towards the default cipher suite */
3768 rand = ztest_random(ZIO_CRYPT_FUNCTIONS);
3769 if (rand < ZIO_CRYPT_AES_128_CCM)
3770 rand = ZIO_CRYPT_ON;
3771
3772 fnvlist_add_uint64(props,
3773 zfs_prop_to_name(ZFS_PROP_ENCRYPTION), rand);
3774 fnvlist_add_uint8_array(crypto_args, "wkeydata",
3775 (uint8_t *)ztest_wkeydata, WRAPPING_KEY_LEN);
3776
3777 /*
3778 * These parameters aren't really used by the kernel. They
3779 * are simply stored so that userspace knows how to load
3780 * the wrapping key.
3781 */
3782 fnvlist_add_uint64(props,
3783 zfs_prop_to_name(ZFS_PROP_KEYFORMAT), ZFS_KEYFORMAT_RAW);
3784 fnvlist_add_string(props,
3785 zfs_prop_to_name(ZFS_PROP_KEYLOCATION), "prompt");
3786 fnvlist_add_uint64(props,
3787 zfs_prop_to_name(ZFS_PROP_PBKDF2_SALT), 0ULL);
3788 fnvlist_add_uint64(props,
3789 zfs_prop_to_name(ZFS_PROP_PBKDF2_ITERS), 0ULL);
3790
3791 VERIFY0(dsl_crypto_params_create_nvlist(DCP_CMD_NONE, props,
3792 crypto_args, &dcp));
3793
3794 fnvlist_free(crypto_args);
3795 fnvlist_free(props);
3796 }
3797
3798 err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, dcp,
3799 ztest_objset_create_cb, NULL);
3800 dsl_crypto_params_free(dcp, !!err);
3801
3802 rand = ztest_random(100);
3803 if (err || rand < 80)
3804 return (err);
3805
3806 if (ztest_opts.zo_verbose >= 6)
3807 (void) printf("Setting dataset %s to sync always\n", dsname);
3808 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
3809 ZFS_SYNC_ALWAYS, B_FALSE));
3810 }
3811
3812 /* ARGSUSED */
3813 static int
ztest_objset_destroy_cb(const char * name,void * arg)3814 ztest_objset_destroy_cb(const char *name, void *arg)
3815 {
3816 objset_t *os;
3817 dmu_object_info_t doi;
3818 int error;
3819
3820 /*
3821 * Verify that the dataset contains a directory object.
3822 */
3823 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
3824 B_TRUE, FTAG, &os));
3825 error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
3826 if (error != ENOENT) {
3827 /* We could have crashed in the middle of destroying it */
3828 ASSERT0(error);
3829 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
3830 ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
3831 }
3832 dmu_objset_disown(os, B_TRUE, FTAG);
3833
3834 /*
3835 * Destroy the dataset.
3836 */
3837 if (strchr(name, '@') != NULL) {
3838 VERIFY0(dsl_destroy_snapshot(name, B_TRUE));
3839 } else {
3840 error = dsl_destroy_head(name);
3841 /* There could be a hold on this dataset */
3842 if (error != EBUSY)
3843 ASSERT0(error);
3844 }
3845 return (0);
3846 }
3847
3848 static boolean_t
ztest_snapshot_create(char * osname,uint64_t id)3849 ztest_snapshot_create(char *osname, uint64_t id)
3850 {
3851 char snapname[ZFS_MAX_DATASET_NAME_LEN];
3852 int error;
3853
3854 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id);
3855
3856 error = dmu_objset_snapshot_one(osname, snapname);
3857 if (error == ENOSPC) {
3858 ztest_record_enospc(FTAG);
3859 return (B_FALSE);
3860 }
3861 if (error != 0 && error != EEXIST) {
3862 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname,
3863 snapname, error);
3864 }
3865 return (B_TRUE);
3866 }
3867
3868 static boolean_t
ztest_snapshot_destroy(char * osname,uint64_t id)3869 ztest_snapshot_destroy(char *osname, uint64_t id)
3870 {
3871 char snapname[ZFS_MAX_DATASET_NAME_LEN];
3872 int error;
3873
3874 (void) snprintf(snapname, sizeof (snapname), "%s@%llu", osname,
3875 (u_longlong_t)id);
3876
3877 error = dsl_destroy_snapshot(snapname, B_FALSE);
3878 if (error != 0 && error != ENOENT)
3879 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error);
3880 return (B_TRUE);
3881 }
3882
3883 /* ARGSUSED */
3884 void
ztest_dmu_objset_create_destroy(ztest_ds_t * zd,uint64_t id)3885 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
3886 {
3887 ztest_ds_t zdtmp;
3888 int iters;
3889 int error;
3890 objset_t *os, *os2;
3891 char name[ZFS_MAX_DATASET_NAME_LEN];
3892 zilog_t *zilog;
3893
3894 rw_enter(&ztest_name_lock, RW_READER);
3895
3896 (void) snprintf(name, sizeof (name), "%s/temp_%llu",
3897 ztest_opts.zo_pool, (u_longlong_t)id);
3898
3899 /*
3900 * If this dataset exists from a previous run, process its replay log
3901 * half of the time. If we don't replay it, then dmu_objset_destroy()
3902 * (invoked from ztest_objset_destroy_cb()) should just throw it away.
3903 */
3904 if (ztest_random(2) == 0 &&
3905 ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE,
3906 B_TRUE, FTAG, &os) == 0) {
3907 ztest_zd_init(&zdtmp, NULL, os);
3908 zil_replay(os, &zdtmp, ztest_replay_vector);
3909 ztest_zd_fini(&zdtmp);
3910 dmu_objset_disown(os, B_TRUE, FTAG);
3911 }
3912
3913 /*
3914 * There may be an old instance of the dataset we're about to
3915 * create lying around from a previous run. If so, destroy it
3916 * and all of its snapshots.
3917 */
3918 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
3919 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
3920
3921 /*
3922 * Verify that the destroyed dataset is no longer in the namespace.
3923 */
3924 VERIFY3U(ENOENT, ==, ztest_dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
3925 B_TRUE, FTAG, &os));
3926
3927 /*
3928 * Verify that we can create a new dataset.
3929 */
3930 error = ztest_dataset_create(name);
3931 if (error) {
3932 if (error == ENOSPC) {
3933 ztest_record_enospc(FTAG);
3934 rw_exit(&ztest_name_lock);
3935 return;
3936 }
3937 fatal(0, "dmu_objset_create(%s) = %d", name, error);
3938 }
3939
3940 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, B_TRUE,
3941 FTAG, &os));
3942
3943 ztest_zd_init(&zdtmp, NULL, os);
3944
3945 /*
3946 * Open the intent log for it.
3947 */
3948 zilog = zil_open(os, ztest_get_data);
3949
3950 /*
3951 * Put some objects in there, do a little I/O to them,
3952 * and randomly take a couple of snapshots along the way.
3953 */
3954 iters = ztest_random(5);
3955 for (int i = 0; i < iters; i++) {
3956 ztest_dmu_object_alloc_free(&zdtmp, id);
3957 if (ztest_random(iters) == 0)
3958 (void) ztest_snapshot_create(name, i);
3959 }
3960
3961 /*
3962 * Verify that we cannot create an existing dataset.
3963 */
3964 VERIFY3U(EEXIST, ==,
3965 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL, NULL));
3966
3967 /*
3968 * Verify that we can hold an objset that is also owned.
3969 */
3970 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2));
3971 dmu_objset_rele(os2, FTAG);
3972
3973 /*
3974 * Verify that we cannot own an objset that is already owned.
3975 */
3976 VERIFY3U(EBUSY, ==, ztest_dmu_objset_own(name, DMU_OST_OTHER,
3977 B_FALSE, B_TRUE, FTAG, &os2));
3978
3979 zil_close(zilog);
3980 dmu_objset_disown(os, B_TRUE, FTAG);
3981 ztest_zd_fini(&zdtmp);
3982
3983 rw_exit(&ztest_name_lock);
3984 }
3985
3986 /*
3987 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
3988 */
3989 void
ztest_dmu_snapshot_create_destroy(ztest_ds_t * zd,uint64_t id)3990 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
3991 {
3992 rw_enter(&ztest_name_lock, RW_READER);
3993 (void) ztest_snapshot_destroy(zd->zd_name, id);
3994 (void) ztest_snapshot_create(zd->zd_name, id);
3995 rw_exit(&ztest_name_lock);
3996 }
3997
3998 /*
3999 * Cleanup non-standard snapshots and clones.
4000 */
4001 void
ztest_dsl_dataset_cleanup(char * osname,uint64_t id)4002 ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
4003 {
4004 char snap1name[ZFS_MAX_DATASET_NAME_LEN];
4005 char clone1name[ZFS_MAX_DATASET_NAME_LEN];
4006 char snap2name[ZFS_MAX_DATASET_NAME_LEN];
4007 char clone2name[ZFS_MAX_DATASET_NAME_LEN];
4008 char snap3name[ZFS_MAX_DATASET_NAME_LEN];
4009 int error;
4010
4011 (void) snprintf(snap1name, sizeof (snap1name),
4012 "%s@s1_%llu", osname, id);
4013 (void) snprintf(clone1name, sizeof (clone1name),
4014 "%s/c1_%llu", osname, id);
4015 (void) snprintf(snap2name, sizeof (snap2name),
4016 "%s@s2_%llu", clone1name, id);
4017 (void) snprintf(clone2name, sizeof (clone2name),
4018 "%s/c2_%llu", osname, id);
4019 (void) snprintf(snap3name, sizeof (snap3name),
4020 "%s@s3_%llu", clone1name, id);
4021
4022 error = dsl_destroy_head(clone2name);
4023 if (error && error != ENOENT)
4024 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error);
4025 error = dsl_destroy_snapshot(snap3name, B_FALSE);
4026 if (error && error != ENOENT)
4027 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error);
4028 error = dsl_destroy_snapshot(snap2name, B_FALSE);
4029 if (error && error != ENOENT)
4030 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error);
4031 error = dsl_destroy_head(clone1name);
4032 if (error && error != ENOENT)
4033 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error);
4034 error = dsl_destroy_snapshot(snap1name, B_FALSE);
4035 if (error && error != ENOENT)
4036 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error);
4037 }
4038
4039 /*
4040 * Verify dsl_dataset_promote handles EBUSY
4041 */
4042 void
ztest_dsl_dataset_promote_busy(ztest_ds_t * zd,uint64_t id)4043 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
4044 {
4045 objset_t *os;
4046 char snap1name[ZFS_MAX_DATASET_NAME_LEN];
4047 char clone1name[ZFS_MAX_DATASET_NAME_LEN];
4048 char snap2name[ZFS_MAX_DATASET_NAME_LEN];
4049 char clone2name[ZFS_MAX_DATASET_NAME_LEN];
4050 char snap3name[ZFS_MAX_DATASET_NAME_LEN];
4051 char *osname = zd->zd_name;
4052 int error;
4053
4054 rw_enter(&ztest_name_lock, RW_READER);
4055
4056 ztest_dsl_dataset_cleanup(osname, id);
4057
4058 (void) snprintf(snap1name, sizeof (snap1name),
4059 "%s@s1_%llu", osname, id);
4060 (void) snprintf(clone1name, sizeof (clone1name),
4061 "%s/c1_%llu", osname, id);
4062 (void) snprintf(snap2name, sizeof (snap2name),
4063 "%s@s2_%llu", clone1name, id);
4064 (void) snprintf(clone2name, sizeof (clone2name),
4065 "%s/c2_%llu", osname, id);
4066 (void) snprintf(snap3name, sizeof (snap3name),
4067 "%s@s3_%llu", clone1name, id);
4068
4069 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
4070 if (error && error != EEXIST) {
4071 if (error == ENOSPC) {
4072 ztest_record_enospc(FTAG);
4073 goto out;
4074 }
4075 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error);
4076 }
4077
4078 error = dmu_objset_clone(clone1name, snap1name);
4079 if (error) {
4080 if (error == ENOSPC) {
4081 ztest_record_enospc(FTAG);
4082 goto out;
4083 }
4084 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error);
4085 }
4086
4087 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
4088 if (error && error != EEXIST) {
4089 if (error == ENOSPC) {
4090 ztest_record_enospc(FTAG);
4091 goto out;
4092 }
4093 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error);
4094 }
4095
4096 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
4097 if (error && error != EEXIST) {
4098 if (error == ENOSPC) {
4099 ztest_record_enospc(FTAG);
4100 goto out;
4101 }
4102 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error);
4103 }
4104
4105 error = dmu_objset_clone(clone2name, snap3name);
4106 if (error) {
4107 if (error == ENOSPC) {
4108 ztest_record_enospc(FTAG);
4109 goto out;
4110 }
4111 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error);
4112 }
4113
4114 error = ztest_dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, B_TRUE,
4115 FTAG, &os);
4116 if (error)
4117 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error);
4118 error = dsl_dataset_promote(clone2name, NULL);
4119 if (error == ENOSPC) {
4120 dmu_objset_disown(os, B_TRUE, FTAG);
4121 ztest_record_enospc(FTAG);
4122 goto out;
4123 }
4124 if (error != EBUSY)
4125 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name,
4126 error);
4127 dmu_objset_disown(os, B_TRUE, FTAG);
4128
4129 out:
4130 ztest_dsl_dataset_cleanup(osname, id);
4131
4132 rw_exit(&ztest_name_lock);
4133 }
4134
4135 /*
4136 * Verify that dmu_object_{alloc,free} work as expected.
4137 */
4138 void
ztest_dmu_object_alloc_free(ztest_ds_t * zd,uint64_t id)4139 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
4140 {
4141 ztest_od_t od[4];
4142 int batchsize = sizeof (od) / sizeof (od[0]);
4143
4144 for (int b = 0; b < batchsize; b++) {
4145 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER,
4146 0, 0, 0);
4147 }
4148
4149 /*
4150 * Destroy the previous batch of objects, create a new batch,
4151 * and do some I/O on the new objects.
4152 */
4153 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0)
4154 return;
4155
4156 while (ztest_random(4 * batchsize) != 0)
4157 ztest_io(zd, od[ztest_random(batchsize)].od_object,
4158 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4159 }
4160
4161 /*
4162 * Rewind the global allocator to verify object allocation backfilling.
4163 */
4164 void
ztest_dmu_object_next_chunk(ztest_ds_t * zd,uint64_t id)4165 ztest_dmu_object_next_chunk(ztest_ds_t *zd, uint64_t id)
4166 {
4167 objset_t *os = zd->zd_os;
4168 int dnodes_per_chunk = 1 << dmu_object_alloc_chunk_shift;
4169 uint64_t object;
4170
4171 /*
4172 * Rewind the global allocator randomly back to a lower object number
4173 * to force backfilling and reclamation of recently freed dnodes.
4174 */
4175 mutex_enter(&os->os_obj_lock);
4176 object = ztest_random(os->os_obj_next_chunk);
4177 os->os_obj_next_chunk = P2ALIGN(object, dnodes_per_chunk);
4178 mutex_exit(&os->os_obj_lock);
4179 }
4180
4181 /*
4182 * Verify that dmu_{read,write} work as expected.
4183 */
4184 void
ztest_dmu_read_write(ztest_ds_t * zd,uint64_t id)4185 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
4186 {
4187 objset_t *os = zd->zd_os;
4188 ztest_od_t od[2];
4189 dmu_tx_t *tx;
4190 int i, freeit, error;
4191 uint64_t n, s, txg;
4192 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
4193 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
4194 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
4195 uint64_t regions = 997;
4196 uint64_t stride = 123456789ULL;
4197 uint64_t width = 40;
4198 int free_percent = 5;
4199
4200 /*
4201 * This test uses two objects, packobj and bigobj, that are always
4202 * updated together (i.e. in the same tx) so that their contents are
4203 * in sync and can be compared. Their contents relate to each other
4204 * in a simple way: packobj is a dense array of 'bufwad' structures,
4205 * while bigobj is a sparse array of the same bufwads. Specifically,
4206 * for any index n, there are three bufwads that should be identical:
4207 *
4208 * packobj, at offset n * sizeof (bufwad_t)
4209 * bigobj, at the head of the nth chunk
4210 * bigobj, at the tail of the nth chunk
4211 *
4212 * The chunk size is arbitrary. It doesn't have to be a power of two,
4213 * and it doesn't have any relation to the object blocksize.
4214 * The only requirement is that it can hold at least two bufwads.
4215 *
4216 * Normally, we write the bufwad to each of these locations.
4217 * However, free_percent of the time we instead write zeroes to
4218 * packobj and perform a dmu_free_range() on bigobj. By comparing
4219 * bigobj to packobj, we can verify that the DMU is correctly
4220 * tracking which parts of an object are allocated and free,
4221 * and that the contents of the allocated blocks are correct.
4222 */
4223
4224 /*
4225 * Read the directory info. If it's the first time, set things up.
4226 */
4227 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0,
4228 chunksize);
4229 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, 0,
4230 chunksize);
4231
4232 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4233 return;
4234
4235 bigobj = od[0].od_object;
4236 packobj = od[1].od_object;
4237 chunksize = od[0].od_gen;
4238 ASSERT(chunksize == od[1].od_gen);
4239
4240 /*
4241 * Prefetch a random chunk of the big object.
4242 * Our aim here is to get some async reads in flight
4243 * for blocks that we may free below; the DMU should
4244 * handle this race correctly.
4245 */
4246 n = ztest_random(regions) * stride + ztest_random(width);
4247 s = 1 + ztest_random(2 * width - 1);
4248 dmu_prefetch(os, bigobj, 0, n * chunksize, s * chunksize,
4249 ZIO_PRIORITY_SYNC_READ);
4250
4251 /*
4252 * Pick a random index and compute the offsets into packobj and bigobj.
4253 */
4254 n = ztest_random(regions) * stride + ztest_random(width);
4255 s = 1 + ztest_random(width - 1);
4256
4257 packoff = n * sizeof (bufwad_t);
4258 packsize = s * sizeof (bufwad_t);
4259
4260 bigoff = n * chunksize;
4261 bigsize = s * chunksize;
4262
4263 packbuf = umem_alloc(packsize, UMEM_NOFAIL);
4264 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL);
4265
4266 /*
4267 * free_percent of the time, free a range of bigobj rather than
4268 * overwriting it.
4269 */
4270 freeit = (ztest_random(100) < free_percent);
4271
4272 /*
4273 * Read the current contents of our objects.
4274 */
4275 error = dmu_read(os, packobj, packoff, packsize, packbuf,
4276 DMU_READ_PREFETCH);
4277 ASSERT0(error);
4278 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
4279 DMU_READ_PREFETCH);
4280 ASSERT0(error);
4281
4282 /*
4283 * Get a tx for the mods to both packobj and bigobj.
4284 */
4285 tx = dmu_tx_create(os);
4286
4287 dmu_tx_hold_write(tx, packobj, packoff, packsize);
4288
4289 if (freeit)
4290 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
4291 else
4292 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
4293
4294 /* This accounts for setting the checksum/compression. */
4295 dmu_tx_hold_bonus(tx, bigobj);
4296
4297 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4298 if (txg == 0) {
4299 umem_free(packbuf, packsize);
4300 umem_free(bigbuf, bigsize);
4301 return;
4302 }
4303
4304 enum zio_checksum cksum;
4305 do {
4306 cksum = (enum zio_checksum)
4307 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM);
4308 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS);
4309 dmu_object_set_checksum(os, bigobj, cksum, tx);
4310
4311 enum zio_compress comp;
4312 do {
4313 comp = (enum zio_compress)
4314 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION);
4315 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS);
4316 dmu_object_set_compress(os, bigobj, comp, tx);
4317
4318 /*
4319 * For each index from n to n + s, verify that the existing bufwad
4320 * in packobj matches the bufwads at the head and tail of the
4321 * corresponding chunk in bigobj. Then update all three bufwads
4322 * with the new values we want to write out.
4323 */
4324 for (i = 0; i < s; i++) {
4325 /* LINTED */
4326 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
4327 /* LINTED */
4328 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
4329 /* LINTED */
4330 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
4331
4332 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
4333 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
4334
4335 if (pack->bw_txg > txg)
4336 fatal(0, "future leak: got %llx, open txg is %llx",
4337 pack->bw_txg, txg);
4338
4339 if (pack->bw_data != 0 && pack->bw_index != n + i)
4340 fatal(0, "wrong index: got %llx, wanted %llx+%llx",
4341 pack->bw_index, n, i);
4342
4343 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
4344 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
4345
4346 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
4347 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
4348
4349 if (freeit) {
4350 bzero(pack, sizeof (bufwad_t));
4351 } else {
4352 pack->bw_index = n + i;
4353 pack->bw_txg = txg;
4354 pack->bw_data = 1 + ztest_random(-2ULL);
4355 }
4356 *bigH = *pack;
4357 *bigT = *pack;
4358 }
4359
4360 /*
4361 * We've verified all the old bufwads, and made new ones.
4362 * Now write them out.
4363 */
4364 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
4365
4366 if (freeit) {
4367 if (ztest_opts.zo_verbose >= 7) {
4368 (void) printf("freeing offset %llx size %llx"
4369 " txg %llx\n",
4370 (u_longlong_t)bigoff,
4371 (u_longlong_t)bigsize,
4372 (u_longlong_t)txg);
4373 }
4374 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx));
4375 } else {
4376 if (ztest_opts.zo_verbose >= 7) {
4377 (void) printf("writing offset %llx size %llx"
4378 " txg %llx\n",
4379 (u_longlong_t)bigoff,
4380 (u_longlong_t)bigsize,
4381 (u_longlong_t)txg);
4382 }
4383 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx);
4384 }
4385
4386 dmu_tx_commit(tx);
4387
4388 /*
4389 * Sanity check the stuff we just wrote.
4390 */
4391 {
4392 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
4393 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
4394
4395 VERIFY(0 == dmu_read(os, packobj, packoff,
4396 packsize, packcheck, DMU_READ_PREFETCH));
4397 VERIFY(0 == dmu_read(os, bigobj, bigoff,
4398 bigsize, bigcheck, DMU_READ_PREFETCH));
4399
4400 ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
4401 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
4402
4403 umem_free(packcheck, packsize);
4404 umem_free(bigcheck, bigsize);
4405 }
4406
4407 umem_free(packbuf, packsize);
4408 umem_free(bigbuf, bigsize);
4409 }
4410
4411 void
compare_and_update_pbbufs(uint64_t s,bufwad_t * packbuf,bufwad_t * bigbuf,uint64_t bigsize,uint64_t n,uint64_t chunksize,uint64_t txg)4412 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
4413 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
4414 {
4415 uint64_t i;
4416 bufwad_t *pack;
4417 bufwad_t *bigH;
4418 bufwad_t *bigT;
4419
4420 /*
4421 * For each index from n to n + s, verify that the existing bufwad
4422 * in packobj matches the bufwads at the head and tail of the
4423 * corresponding chunk in bigobj. Then update all three bufwads
4424 * with the new values we want to write out.
4425 */
4426 for (i = 0; i < s; i++) {
4427 /* LINTED */
4428 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
4429 /* LINTED */
4430 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
4431 /* LINTED */
4432 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
4433
4434 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
4435 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
4436
4437 if (pack->bw_txg > txg)
4438 fatal(0, "future leak: got %llx, open txg is %llx",
4439 pack->bw_txg, txg);
4440
4441 if (pack->bw_data != 0 && pack->bw_index != n + i)
4442 fatal(0, "wrong index: got %llx, wanted %llx+%llx",
4443 pack->bw_index, n, i);
4444
4445 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
4446 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
4447
4448 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
4449 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
4450
4451 pack->bw_index = n + i;
4452 pack->bw_txg = txg;
4453 pack->bw_data = 1 + ztest_random(-2ULL);
4454
4455 *bigH = *pack;
4456 *bigT = *pack;
4457 }
4458 }
4459
4460 void
ztest_dmu_read_write_zcopy(ztest_ds_t * zd,uint64_t id)4461 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
4462 {
4463 objset_t *os = zd->zd_os;
4464 ztest_od_t od[2];
4465 dmu_tx_t *tx;
4466 uint64_t i;
4467 int error;
4468 uint64_t n, s, txg;
4469 bufwad_t *packbuf, *bigbuf;
4470 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
4471 uint64_t blocksize = ztest_random_blocksize();
4472 uint64_t chunksize = blocksize;
4473 uint64_t regions = 997;
4474 uint64_t stride = 123456789ULL;
4475 uint64_t width = 9;
4476 dmu_buf_t *bonus_db;
4477 arc_buf_t **bigbuf_arcbufs;
4478 dmu_object_info_t doi;
4479
4480 /*
4481 * This test uses two objects, packobj and bigobj, that are always
4482 * updated together (i.e. in the same tx) so that their contents are
4483 * in sync and can be compared. Their contents relate to each other
4484 * in a simple way: packobj is a dense array of 'bufwad' structures,
4485 * while bigobj is a sparse array of the same bufwads. Specifically,
4486 * for any index n, there are three bufwads that should be identical:
4487 *
4488 * packobj, at offset n * sizeof (bufwad_t)
4489 * bigobj, at the head of the nth chunk
4490 * bigobj, at the tail of the nth chunk
4491 *
4492 * The chunk size is set equal to bigobj block size so that
4493 * dmu_assign_arcbuf_by_dbuf() can be tested for object updates.
4494 */
4495
4496 /*
4497 * Read the directory info. If it's the first time, set things up.
4498 */
4499 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize,
4500 0, 0);
4501 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, 0,
4502 chunksize);
4503
4504 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4505 return;
4506
4507 bigobj = od[0].od_object;
4508 packobj = od[1].od_object;
4509 blocksize = od[0].od_blocksize;
4510 chunksize = blocksize;
4511 ASSERT(chunksize == od[1].od_gen);
4512
4513 VERIFY(dmu_object_info(os, bigobj, &doi) == 0);
4514 VERIFY(ISP2(doi.doi_data_block_size));
4515 VERIFY(chunksize == doi.doi_data_block_size);
4516 VERIFY(chunksize >= 2 * sizeof (bufwad_t));
4517
4518 /*
4519 * Pick a random index and compute the offsets into packobj and bigobj.
4520 */
4521 n = ztest_random(regions) * stride + ztest_random(width);
4522 s = 1 + ztest_random(width - 1);
4523
4524 packoff = n * sizeof (bufwad_t);
4525 packsize = s * sizeof (bufwad_t);
4526
4527 bigoff = n * chunksize;
4528 bigsize = s * chunksize;
4529
4530 packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
4531 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
4532
4533 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
4534
4535 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
4536
4537 /*
4538 * Iteration 0 test zcopy for DB_UNCACHED dbufs.
4539 * Iteration 1 test zcopy to already referenced dbufs.
4540 * Iteration 2 test zcopy to dirty dbuf in the same txg.
4541 * Iteration 3 test zcopy to dbuf dirty in previous txg.
4542 * Iteration 4 test zcopy when dbuf is no longer dirty.
4543 * Iteration 5 test zcopy when it can't be done.
4544 * Iteration 6 one more zcopy write.
4545 */
4546 for (i = 0; i < 7; i++) {
4547 uint64_t j;
4548 uint64_t off;
4549
4550 /*
4551 * In iteration 5 (i == 5) use arcbufs
4552 * that don't match bigobj blksz to test
4553 * dmu_assign_arcbuf_by_dbuf() when it can't directly
4554 * assign an arcbuf to a dbuf.
4555 */
4556 for (j = 0; j < s; j++) {
4557 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
4558 bigbuf_arcbufs[j] =
4559 dmu_request_arcbuf(bonus_db, chunksize);
4560 } else {
4561 bigbuf_arcbufs[2 * j] =
4562 dmu_request_arcbuf(bonus_db, chunksize / 2);
4563 bigbuf_arcbufs[2 * j + 1] =
4564 dmu_request_arcbuf(bonus_db, chunksize / 2);
4565 }
4566 }
4567
4568 /*
4569 * Get a tx for the mods to both packobj and bigobj.
4570 */
4571 tx = dmu_tx_create(os);
4572
4573 dmu_tx_hold_write(tx, packobj, packoff, packsize);
4574 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
4575
4576 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4577 if (txg == 0) {
4578 umem_free(packbuf, packsize);
4579 umem_free(bigbuf, bigsize);
4580 for (j = 0; j < s; j++) {
4581 if (i != 5 ||
4582 chunksize < (SPA_MINBLOCKSIZE * 2)) {
4583 dmu_return_arcbuf(bigbuf_arcbufs[j]);
4584 } else {
4585 dmu_return_arcbuf(
4586 bigbuf_arcbufs[2 * j]);
4587 dmu_return_arcbuf(
4588 bigbuf_arcbufs[2 * j + 1]);
4589 }
4590 }
4591 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
4592 dmu_buf_rele(bonus_db, FTAG);
4593 return;
4594 }
4595
4596 /*
4597 * 50% of the time don't read objects in the 1st iteration to
4598 * test dmu_assign_arcbuf_by_dbuf() for the case when there are
4599 * no existing dbufs for the specified offsets.
4600 */
4601 if (i != 0 || ztest_random(2) != 0) {
4602 error = dmu_read(os, packobj, packoff,
4603 packsize, packbuf, DMU_READ_PREFETCH);
4604 ASSERT0(error);
4605 error = dmu_read(os, bigobj, bigoff, bigsize,
4606 bigbuf, DMU_READ_PREFETCH);
4607 ASSERT0(error);
4608 }
4609 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
4610 n, chunksize, txg);
4611
4612 /*
4613 * We've verified all the old bufwads, and made new ones.
4614 * Now write them out.
4615 */
4616 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
4617 if (ztest_opts.zo_verbose >= 7) {
4618 (void) printf("writing offset %llx size %llx"
4619 " txg %llx\n",
4620 (u_longlong_t)bigoff,
4621 (u_longlong_t)bigsize,
4622 (u_longlong_t)txg);
4623 }
4624 for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
4625 dmu_buf_t *dbt;
4626 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
4627 bcopy((caddr_t)bigbuf + (off - bigoff),
4628 bigbuf_arcbufs[j]->b_data, chunksize);
4629 } else {
4630 bcopy((caddr_t)bigbuf + (off - bigoff),
4631 bigbuf_arcbufs[2 * j]->b_data,
4632 chunksize / 2);
4633 bcopy((caddr_t)bigbuf + (off - bigoff) +
4634 chunksize / 2,
4635 bigbuf_arcbufs[2 * j + 1]->b_data,
4636 chunksize / 2);
4637 }
4638
4639 if (i == 1) {
4640 VERIFY(dmu_buf_hold(os, bigobj, off,
4641 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
4642 }
4643 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
4644 dmu_assign_arcbuf_by_dbuf(bonus_db, off,
4645 bigbuf_arcbufs[j], tx);
4646 } else {
4647 dmu_assign_arcbuf_by_dbuf(bonus_db, off,
4648 bigbuf_arcbufs[2 * j], tx);
4649 dmu_assign_arcbuf_by_dbuf(bonus_db,
4650 off + chunksize / 2,
4651 bigbuf_arcbufs[2 * j + 1], tx);
4652 }
4653 if (i == 1) {
4654 dmu_buf_rele(dbt, FTAG);
4655 }
4656 }
4657 dmu_tx_commit(tx);
4658
4659 /*
4660 * Sanity check the stuff we just wrote.
4661 */
4662 {
4663 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
4664 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
4665
4666 VERIFY(0 == dmu_read(os, packobj, packoff,
4667 packsize, packcheck, DMU_READ_PREFETCH));
4668 VERIFY(0 == dmu_read(os, bigobj, bigoff,
4669 bigsize, bigcheck, DMU_READ_PREFETCH));
4670
4671 ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
4672 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
4673
4674 umem_free(packcheck, packsize);
4675 umem_free(bigcheck, bigsize);
4676 }
4677 if (i == 2) {
4678 txg_wait_open(dmu_objset_pool(os), 0, B_TRUE);
4679 } else if (i == 3) {
4680 txg_wait_synced(dmu_objset_pool(os), 0);
4681 }
4682 }
4683
4684 dmu_buf_rele(bonus_db, FTAG);
4685 umem_free(packbuf, packsize);
4686 umem_free(bigbuf, bigsize);
4687 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
4688 }
4689
4690 /* ARGSUSED */
4691 void
ztest_dmu_write_parallel(ztest_ds_t * zd,uint64_t id)4692 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
4693 {
4694 ztest_od_t od[1];
4695 uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
4696 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4697
4698 /*
4699 * Have multiple threads write to large offsets in an object
4700 * to verify that parallel writes to an object -- even to the
4701 * same blocks within the object -- doesn't cause any trouble.
4702 */
4703 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER,
4704 0, 0, 0);
4705
4706 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4707 return;
4708
4709 while (ztest_random(10) != 0)
4710 ztest_io(zd, od[0].od_object, offset);
4711 }
4712
4713 void
ztest_dmu_prealloc(ztest_ds_t * zd,uint64_t id)4714 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
4715 {
4716 ztest_od_t od[1];
4717 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
4718 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4719 uint64_t count = ztest_random(20) + 1;
4720 uint64_t blocksize = ztest_random_blocksize();
4721 void *data;
4722
4723 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize,
4724 0, 0);
4725
4726 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4727 return;
4728
4729 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0)
4730 return;
4731
4732 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize);
4733
4734 data = umem_zalloc(blocksize, UMEM_NOFAIL);
4735
4736 while (ztest_random(count) != 0) {
4737 uint64_t randoff = offset + (ztest_random(count) * blocksize);
4738 if (ztest_write(zd, od[0].od_object, randoff, blocksize,
4739 data) != 0)
4740 break;
4741 while (ztest_random(4) != 0)
4742 ztest_io(zd, od[0].od_object, randoff);
4743 }
4744
4745 umem_free(data, blocksize);
4746 }
4747
4748 /*
4749 * Verify that zap_{create,destroy,add,remove,update} work as expected.
4750 */
4751 #define ZTEST_ZAP_MIN_INTS 1
4752 #define ZTEST_ZAP_MAX_INTS 4
4753 #define ZTEST_ZAP_MAX_PROPS 1000
4754
4755 void
ztest_zap(ztest_ds_t * zd,uint64_t id)4756 ztest_zap(ztest_ds_t *zd, uint64_t id)
4757 {
4758 objset_t *os = zd->zd_os;
4759 ztest_od_t od[1];
4760 uint64_t object;
4761 uint64_t txg, last_txg;
4762 uint64_t value[ZTEST_ZAP_MAX_INTS];
4763 uint64_t zl_ints, zl_intsize, prop;
4764 int i, ints;
4765 dmu_tx_t *tx;
4766 char propname[100], txgname[100];
4767 int error;
4768 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
4769
4770 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
4771
4772 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4773 return;
4774
4775 object = od[0].od_object;
4776
4777 /*
4778 * Generate a known hash collision, and verify that
4779 * we can lookup and remove both entries.
4780 */
4781 tx = dmu_tx_create(os);
4782 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4783 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4784 if (txg == 0)
4785 return;
4786 for (i = 0; i < 2; i++) {
4787 value[i] = i;
4788 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t),
4789 1, &value[i], tx));
4790 }
4791 for (i = 0; i < 2; i++) {
4792 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
4793 sizeof (uint64_t), 1, &value[i], tx));
4794 VERIFY3U(0, ==,
4795 zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
4796 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4797 ASSERT3U(zl_ints, ==, 1);
4798 }
4799 for (i = 0; i < 2; i++) {
4800 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx));
4801 }
4802 dmu_tx_commit(tx);
4803
4804 /*
4805 * Generate a buch of random entries.
4806 */
4807 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS);
4808
4809 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4810 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4811 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4812 bzero(value, sizeof (value));
4813 last_txg = 0;
4814
4815 /*
4816 * If these zap entries already exist, validate their contents.
4817 */
4818 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4819 if (error == 0) {
4820 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4821 ASSERT3U(zl_ints, ==, 1);
4822
4823 VERIFY(zap_lookup(os, object, txgname, zl_intsize,
4824 zl_ints, &last_txg) == 0);
4825
4826 VERIFY(zap_length(os, object, propname, &zl_intsize,
4827 &zl_ints) == 0);
4828
4829 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4830 ASSERT3U(zl_ints, ==, ints);
4831
4832 VERIFY(zap_lookup(os, object, propname, zl_intsize,
4833 zl_ints, value) == 0);
4834
4835 for (i = 0; i < ints; i++) {
4836 ASSERT3U(value[i], ==, last_txg + object + i);
4837 }
4838 } else {
4839 ASSERT3U(error, ==, ENOENT);
4840 }
4841
4842 /*
4843 * Atomically update two entries in our zap object.
4844 * The first is named txg_%llu, and contains the txg
4845 * in which the property was last updated. The second
4846 * is named prop_%llu, and the nth element of its value
4847 * should be txg + object + n.
4848 */
4849 tx = dmu_tx_create(os);
4850 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4851 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4852 if (txg == 0)
4853 return;
4854
4855 if (last_txg > txg)
4856 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg);
4857
4858 for (i = 0; i < ints; i++)
4859 value[i] = txg + object + i;
4860
4861 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t),
4862 1, &txg, tx));
4863 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t),
4864 ints, value, tx));
4865
4866 dmu_tx_commit(tx);
4867
4868 /*
4869 * Remove a random pair of entries.
4870 */
4871 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4872 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4873 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4874
4875 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4876
4877 if (error == ENOENT)
4878 return;
4879
4880 ASSERT0(error);
4881
4882 tx = dmu_tx_create(os);
4883 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4884 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4885 if (txg == 0)
4886 return;
4887 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx));
4888 VERIFY3U(0, ==, zap_remove(os, object, propname, tx));
4889 dmu_tx_commit(tx);
4890 }
4891
4892 /*
4893 * Testcase to test the upgrading of a microzap to fatzap.
4894 */
4895 void
ztest_fzap(ztest_ds_t * zd,uint64_t id)4896 ztest_fzap(ztest_ds_t *zd, uint64_t id)
4897 {
4898 objset_t *os = zd->zd_os;
4899 ztest_od_t od[1];
4900 uint64_t object, txg;
4901
4902 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
4903
4904 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4905 return;
4906
4907 object = od[0].od_object;
4908
4909 /*
4910 * Add entries to this ZAP and make sure it spills over
4911 * and gets upgraded to a fatzap. Also, since we are adding
4912 * 2050 entries we should see ptrtbl growth and leaf-block split.
4913 */
4914 for (int i = 0; i < 2050; i++) {
4915 char name[ZFS_MAX_DATASET_NAME_LEN];
4916 uint64_t value = i;
4917 dmu_tx_t *tx;
4918 int error;
4919
4920 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu",
4921 id, value);
4922
4923 tx = dmu_tx_create(os);
4924 dmu_tx_hold_zap(tx, object, B_TRUE, name);
4925 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4926 if (txg == 0)
4927 return;
4928 error = zap_add(os, object, name, sizeof (uint64_t), 1,
4929 &value, tx);
4930 ASSERT(error == 0 || error == EEXIST);
4931 dmu_tx_commit(tx);
4932 }
4933 }
4934
4935 /* ARGSUSED */
4936 void
ztest_zap_parallel(ztest_ds_t * zd,uint64_t id)4937 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
4938 {
4939 objset_t *os = zd->zd_os;
4940 ztest_od_t od[1];
4941 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
4942 dmu_tx_t *tx;
4943 int i, namelen, error;
4944 int micro = ztest_random(2);
4945 char name[20], string_value[20];
4946 void *data;
4947
4948 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER,
4949 0, 0, 0);
4950
4951 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4952 return;
4953
4954 object = od[0].od_object;
4955
4956 /*
4957 * Generate a random name of the form 'xxx.....' where each
4958 * x is a random printable character and the dots are dots.
4959 * There are 94 such characters, and the name length goes from
4960 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
4961 */
4962 namelen = ztest_random(sizeof (name) - 5) + 5 + 1;
4963
4964 for (i = 0; i < 3; i++)
4965 name[i] = '!' + ztest_random('~' - '!' + 1);
4966 for (; i < namelen - 1; i++)
4967 name[i] = '.';
4968 name[i] = '\0';
4969
4970 if ((namelen & 1) || micro) {
4971 wsize = sizeof (txg);
4972 wc = 1;
4973 data = &txg;
4974 } else {
4975 wsize = 1;
4976 wc = namelen;
4977 data = string_value;
4978 }
4979
4980 count = -1ULL;
4981 VERIFY0(zap_count(os, object, &count));
4982 ASSERT(count != -1ULL);
4983
4984 /*
4985 * Select an operation: length, lookup, add, update, remove.
4986 */
4987 i = ztest_random(5);
4988
4989 if (i >= 2) {
4990 tx = dmu_tx_create(os);
4991 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4992 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4993 if (txg == 0)
4994 return;
4995 bcopy(name, string_value, namelen);
4996 } else {
4997 tx = NULL;
4998 txg = 0;
4999 bzero(string_value, namelen);
5000 }
5001
5002 switch (i) {
5003
5004 case 0:
5005 error = zap_length(os, object, name, &zl_wsize, &zl_wc);
5006 if (error == 0) {
5007 ASSERT3U(wsize, ==, zl_wsize);
5008 ASSERT3U(wc, ==, zl_wc);
5009 } else {
5010 ASSERT3U(error, ==, ENOENT);
5011 }
5012 break;
5013
5014 case 1:
5015 error = zap_lookup(os, object, name, wsize, wc, data);
5016 if (error == 0) {
5017 if (data == string_value &&
5018 bcmp(name, data, namelen) != 0)
5019 fatal(0, "name '%s' != val '%s' len %d",
5020 name, data, namelen);
5021 } else {
5022 ASSERT3U(error, ==, ENOENT);
5023 }
5024 break;
5025
5026 case 2:
5027 error = zap_add(os, object, name, wsize, wc, data, tx);
5028 ASSERT(error == 0 || error == EEXIST);
5029 break;
5030
5031 case 3:
5032 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0);
5033 break;
5034
5035 case 4:
5036 error = zap_remove(os, object, name, tx);
5037 ASSERT(error == 0 || error == ENOENT);
5038 break;
5039 }
5040
5041 if (tx != NULL)
5042 dmu_tx_commit(tx);
5043 }
5044
5045 /*
5046 * Commit callback data.
5047 */
5048 typedef struct ztest_cb_data {
5049 list_node_t zcd_node;
5050 uint64_t zcd_txg;
5051 int zcd_expected_err;
5052 boolean_t zcd_added;
5053 boolean_t zcd_called;
5054 spa_t *zcd_spa;
5055 } ztest_cb_data_t;
5056
5057 /* This is the actual commit callback function */
5058 static void
ztest_commit_callback(void * arg,int error)5059 ztest_commit_callback(void *arg, int error)
5060 {
5061 ztest_cb_data_t *data = arg;
5062 uint64_t synced_txg;
5063
5064 VERIFY(data != NULL);
5065 VERIFY3S(data->zcd_expected_err, ==, error);
5066 VERIFY(!data->zcd_called);
5067
5068 synced_txg = spa_last_synced_txg(data->zcd_spa);
5069 if (data->zcd_txg > synced_txg)
5070 fatal(0, "commit callback of txg %" PRIu64 " called prematurely"
5071 ", last synced txg = %" PRIu64 "\n", data->zcd_txg,
5072 synced_txg);
5073
5074 data->zcd_called = B_TRUE;
5075
5076 if (error == ECANCELED) {
5077 ASSERT0(data->zcd_txg);
5078 ASSERT(!data->zcd_added);
5079
5080 /*
5081 * The private callback data should be destroyed here, but
5082 * since we are going to check the zcd_called field after
5083 * dmu_tx_abort(), we will destroy it there.
5084 */
5085 return;
5086 }
5087
5088 /* Was this callback added to the global callback list? */
5089 if (!data->zcd_added)
5090 goto out;
5091
5092 ASSERT3U(data->zcd_txg, !=, 0);
5093
5094 /* Remove our callback from the list */
5095 mutex_enter(&zcl.zcl_callbacks_lock);
5096 list_remove(&zcl.zcl_callbacks, data);
5097 mutex_exit(&zcl.zcl_callbacks_lock);
5098
5099 out:
5100 umem_free(data, sizeof (ztest_cb_data_t));
5101 }
5102
5103 /* Allocate and initialize callback data structure */
5104 static ztest_cb_data_t *
ztest_create_cb_data(objset_t * os,uint64_t txg)5105 ztest_create_cb_data(objset_t *os, uint64_t txg)
5106 {
5107 ztest_cb_data_t *cb_data;
5108
5109 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
5110
5111 cb_data->zcd_txg = txg;
5112 cb_data->zcd_spa = dmu_objset_spa(os);
5113
5114 return (cb_data);
5115 }
5116
5117 /*
5118 * If a number of txgs equal to this threshold have been created after a commit
5119 * callback has been registered but not called, then we assume there is an
5120 * implementation bug.
5121 */
5122 #define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2)
5123
5124 /*
5125 * Commit callback test.
5126 */
5127 void
ztest_dmu_commit_callbacks(ztest_ds_t * zd,uint64_t id)5128 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
5129 {
5130 objset_t *os = zd->zd_os;
5131 ztest_od_t od[1];
5132 dmu_tx_t *tx;
5133 ztest_cb_data_t *cb_data[3], *tmp_cb;
5134 uint64_t old_txg, txg;
5135 int i, error;
5136
5137 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
5138
5139 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
5140 return;
5141
5142 tx = dmu_tx_create(os);
5143
5144 cb_data[0] = ztest_create_cb_data(os, 0);
5145 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
5146
5147 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t));
5148
5149 /* Every once in a while, abort the transaction on purpose */
5150 if (ztest_random(100) == 0)
5151 error = -1;
5152
5153 if (!error)
5154 error = dmu_tx_assign(tx, TXG_NOWAIT);
5155
5156 txg = error ? 0 : dmu_tx_get_txg(tx);
5157
5158 cb_data[0]->zcd_txg = txg;
5159 cb_data[1] = ztest_create_cb_data(os, txg);
5160 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
5161
5162 if (error) {
5163 /*
5164 * It's not a strict requirement to call the registered
5165 * callbacks from inside dmu_tx_abort(), but that's what
5166 * it's supposed to happen in the current implementation
5167 * so we will check for that.
5168 */
5169 for (i = 0; i < 2; i++) {
5170 cb_data[i]->zcd_expected_err = ECANCELED;
5171 VERIFY(!cb_data[i]->zcd_called);
5172 }
5173
5174 dmu_tx_abort(tx);
5175
5176 for (i = 0; i < 2; i++) {
5177 VERIFY(cb_data[i]->zcd_called);
5178 umem_free(cb_data[i], sizeof (ztest_cb_data_t));
5179 }
5180
5181 return;
5182 }
5183
5184 cb_data[2] = ztest_create_cb_data(os, txg);
5185 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
5186
5187 /*
5188 * Read existing data to make sure there isn't a future leak.
5189 */
5190 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t),
5191 &old_txg, DMU_READ_PREFETCH));
5192
5193 if (old_txg > txg)
5194 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64,
5195 old_txg, txg);
5196
5197 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx);
5198
5199 mutex_enter(&zcl.zcl_callbacks_lock);
5200
5201 /*
5202 * Since commit callbacks don't have any ordering requirement and since
5203 * it is theoretically possible for a commit callback to be called
5204 * after an arbitrary amount of time has elapsed since its txg has been
5205 * synced, it is difficult to reliably determine whether a commit
5206 * callback hasn't been called due to high load or due to a flawed
5207 * implementation.
5208 *
5209 * In practice, we will assume that if after a certain number of txgs a
5210 * commit callback hasn't been called, then most likely there's an
5211 * implementation bug..
5212 */
5213 tmp_cb = list_head(&zcl.zcl_callbacks);
5214 if (tmp_cb != NULL &&
5215 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) {
5216 fatal(0, "Commit callback threshold exceeded, oldest txg: %"
5217 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg);
5218 }
5219
5220 /*
5221 * Let's find the place to insert our callbacks.
5222 *
5223 * Even though the list is ordered by txg, it is possible for the
5224 * insertion point to not be the end because our txg may already be
5225 * quiescing at this point and other callbacks in the open txg
5226 * (from other objsets) may have sneaked in.
5227 */
5228 tmp_cb = list_tail(&zcl.zcl_callbacks);
5229 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
5230 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
5231
5232 /* Add the 3 callbacks to the list */
5233 for (i = 0; i < 3; i++) {
5234 if (tmp_cb == NULL)
5235 list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
5236 else
5237 list_insert_after(&zcl.zcl_callbacks, tmp_cb,
5238 cb_data[i]);
5239
5240 cb_data[i]->zcd_added = B_TRUE;
5241 VERIFY(!cb_data[i]->zcd_called);
5242
5243 tmp_cb = cb_data[i];
5244 }
5245
5246 mutex_exit(&zcl.zcl_callbacks_lock);
5247
5248 dmu_tx_commit(tx);
5249 }
5250
5251 /*
5252 * Visit each object in the dataset. Verify that its properties
5253 * are consistent what was stored in the block tag when it was created,
5254 * and that its unused bonus buffer space has not been overwritten.
5255 */
5256 void
ztest_verify_dnode_bt(ztest_ds_t * zd,uint64_t id)5257 ztest_verify_dnode_bt(ztest_ds_t *zd, uint64_t id)
5258 {
5259 objset_t *os = zd->zd_os;
5260 uint64_t obj;
5261 int err = 0;
5262
5263 for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) {
5264 ztest_block_tag_t *bt = NULL;
5265 dmu_object_info_t doi;
5266 dmu_buf_t *db;
5267
5268 if (dmu_bonus_hold(os, obj, FTAG, &db) != 0)
5269 continue;
5270
5271 dmu_object_info_from_db(db, &doi);
5272 if (doi.doi_bonus_size >= sizeof (*bt))
5273 bt = ztest_bt_bonus(db);
5274
5275 if (bt && bt->bt_magic == BT_MAGIC) {
5276 ztest_bt_verify(bt, os, obj, doi.doi_dnodesize,
5277 bt->bt_offset, bt->bt_gen, bt->bt_txg,
5278 bt->bt_crtxg);
5279 ztest_verify_unused_bonus(db, bt, obj, os, bt->bt_gen);
5280 }
5281
5282 dmu_buf_rele(db, FTAG);
5283 }
5284 }
5285
5286 /* ARGSUSED */
5287 void
ztest_dsl_prop_get_set(ztest_ds_t * zd,uint64_t id)5288 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
5289 {
5290 zfs_prop_t proplist[] = {
5291 ZFS_PROP_CHECKSUM,
5292 ZFS_PROP_COMPRESSION,
5293 ZFS_PROP_COPIES,
5294 ZFS_PROP_DEDUP
5295 };
5296
5297 rw_enter(&ztest_name_lock, RW_READER);
5298
5299 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++)
5300 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
5301 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
5302
5303 rw_exit(&ztest_name_lock);
5304 }
5305
5306 /* ARGSUSED */
5307 void
ztest_remap_blocks(ztest_ds_t * zd,uint64_t id)5308 ztest_remap_blocks(ztest_ds_t *zd, uint64_t id)
5309 {
5310 rw_enter(&ztest_name_lock, RW_READER);
5311
5312 int error = dmu_objset_remap_indirects(zd->zd_name);
5313 if (error == ENOSPC)
5314 error = 0;
5315 ASSERT0(error);
5316
5317 rw_exit(&ztest_name_lock);
5318 }
5319
5320 /* ARGSUSED */
5321 void
ztest_spa_prop_get_set(ztest_ds_t * zd,uint64_t id)5322 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
5323 {
5324 nvlist_t *props = NULL;
5325
5326 rw_enter(&ztest_name_lock, RW_READER);
5327
5328 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO,
5329 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN));
5330
5331 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_AUTOTRIM, ztest_random(2));
5332
5333 VERIFY0(spa_prop_get(ztest_spa, &props));
5334
5335 if (ztest_opts.zo_verbose >= 6)
5336 dump_nvlist(props, 4);
5337
5338 nvlist_free(props);
5339
5340 rw_exit(&ztest_name_lock);
5341 }
5342
5343 static int
user_release_one(const char * snapname,const char * holdname)5344 user_release_one(const char *snapname, const char *holdname)
5345 {
5346 nvlist_t *snaps, *holds;
5347 int error;
5348
5349 snaps = fnvlist_alloc();
5350 holds = fnvlist_alloc();
5351 fnvlist_add_boolean(holds, holdname);
5352 fnvlist_add_nvlist(snaps, snapname, holds);
5353 fnvlist_free(holds);
5354 error = dsl_dataset_user_release(snaps, NULL);
5355 fnvlist_free(snaps);
5356 return (error);
5357 }
5358
5359 /*
5360 * Test snapshot hold/release and deferred destroy.
5361 */
5362 void
ztest_dmu_snapshot_hold(ztest_ds_t * zd,uint64_t id)5363 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
5364 {
5365 int error;
5366 objset_t *os = zd->zd_os;
5367 objset_t *origin;
5368 char snapname[100];
5369 char fullname[100];
5370 char clonename[100];
5371 char tag[100];
5372 char osname[ZFS_MAX_DATASET_NAME_LEN];
5373 nvlist_t *holds;
5374
5375 rw_enter(&ztest_name_lock, RW_READER);
5376
5377 dmu_objset_name(os, osname);
5378
5379 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id);
5380 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
5381 (void) snprintf(clonename, sizeof (clonename),
5382 "%s/ch1_%llu", osname, id);
5383 (void) snprintf(tag, sizeof (tag), "tag_%llu", id);
5384
5385 /*
5386 * Clean up from any previous run.
5387 */
5388 error = dsl_destroy_head(clonename);
5389 if (error != ENOENT)
5390 ASSERT0(error);
5391 error = user_release_one(fullname, tag);
5392 if (error != ESRCH && error != ENOENT)
5393 ASSERT0(error);
5394 error = dsl_destroy_snapshot(fullname, B_FALSE);
5395 if (error != ENOENT)
5396 ASSERT0(error);
5397
5398 /*
5399 * Create snapshot, clone it, mark snap for deferred destroy,
5400 * destroy clone, verify snap was also destroyed.
5401 */
5402 error = dmu_objset_snapshot_one(osname, snapname);
5403 if (error) {
5404 if (error == ENOSPC) {
5405 ztest_record_enospc("dmu_objset_snapshot");
5406 goto out;
5407 }
5408 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
5409 }
5410
5411 error = dmu_objset_clone(clonename, fullname);
5412 if (error) {
5413 if (error == ENOSPC) {
5414 ztest_record_enospc("dmu_objset_clone");
5415 goto out;
5416 }
5417 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error);
5418 }
5419
5420 error = dsl_destroy_snapshot(fullname, B_TRUE);
5421 if (error) {
5422 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
5423 fullname, error);
5424 }
5425
5426 error = dsl_destroy_head(clonename);
5427 if (error)
5428 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error);
5429
5430 error = dmu_objset_hold(fullname, FTAG, &origin);
5431 if (error != ENOENT)
5432 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error);
5433
5434 /*
5435 * Create snapshot, add temporary hold, verify that we can't
5436 * destroy a held snapshot, mark for deferred destroy,
5437 * release hold, verify snapshot was destroyed.
5438 */
5439 error = dmu_objset_snapshot_one(osname, snapname);
5440 if (error) {
5441 if (error == ENOSPC) {
5442 ztest_record_enospc("dmu_objset_snapshot");
5443 goto out;
5444 }
5445 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
5446 }
5447
5448 holds = fnvlist_alloc();
5449 fnvlist_add_string(holds, fullname, tag);
5450 error = dsl_dataset_user_hold(holds, 0, NULL);
5451 fnvlist_free(holds);
5452
5453 if (error == ENOSPC) {
5454 ztest_record_enospc("dsl_dataset_user_hold");
5455 goto out;
5456 } else if (error) {
5457 fatal(0, "dsl_dataset_user_hold(%s, %s) = %u",
5458 fullname, tag, error);
5459 }
5460
5461 error = dsl_destroy_snapshot(fullname, B_FALSE);
5462 if (error != EBUSY) {
5463 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
5464 fullname, error);
5465 }
5466
5467 error = dsl_destroy_snapshot(fullname, B_TRUE);
5468 if (error) {
5469 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
5470 fullname, error);
5471 }
5472
5473 error = user_release_one(fullname, tag);
5474 if (error)
5475 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error);
5476
5477 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
5478
5479 out:
5480 rw_exit(&ztest_name_lock);
5481 }
5482
5483 /*
5484 * Inject random faults into the on-disk data.
5485 */
5486 /* ARGSUSED */
5487 void
ztest_fault_inject(ztest_ds_t * zd,uint64_t id)5488 ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
5489 {
5490 ztest_shared_t *zs = ztest_shared;
5491 spa_t *spa = ztest_spa;
5492 int fd;
5493 uint64_t offset;
5494 uint64_t leaves;
5495 uint64_t bad = 0x1990c0ffeedecade;
5496 uint64_t top, leaf;
5497 char path0[MAXPATHLEN];
5498 char pathrand[MAXPATHLEN];
5499 size_t fsize;
5500 int bshift = SPA_MAXBLOCKSHIFT + 2;
5501 int iters = 1000;
5502 int maxfaults;
5503 int mirror_save;
5504 vdev_t *vd0 = NULL;
5505 uint64_t guid0 = 0;
5506 boolean_t islog = B_FALSE;
5507
5508 mutex_enter(&ztest_vdev_lock);
5509
5510 /*
5511 * Device removal is in progress, fault injection must be disabled
5512 * until it completes and the pool is scrubbed. The fault injection
5513 * strategy for damaging blocks does not take in to account evacuated
5514 * blocks which may have already been damaged.
5515 */
5516 if (ztest_device_removal_active) {
5517 mutex_exit(&ztest_vdev_lock);
5518 return;
5519 }
5520
5521 maxfaults = MAXFAULTS();
5522 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
5523 mirror_save = zs->zs_mirrors;
5524 mutex_exit(&ztest_vdev_lock);
5525
5526 ASSERT(leaves >= 1);
5527
5528 /*
5529 * Grab the name lock as reader. There are some operations
5530 * which don't like to have their vdevs changed while
5531 * they are in progress (i.e. spa_change_guid). Those
5532 * operations will have grabbed the name lock as writer.
5533 */
5534 rw_enter(&ztest_name_lock, RW_READER);
5535
5536 /*
5537 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd.
5538 */
5539 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
5540
5541 if (ztest_random(2) == 0) {
5542 /*
5543 * Inject errors on a normal data device or slog device.
5544 */
5545 top = ztest_random_vdev_top(spa, B_TRUE);
5546 leaf = ztest_random(leaves) + zs->zs_splits;
5547
5548 /*
5549 * Generate paths to the first leaf in this top-level vdev,
5550 * and to the random leaf we selected. We'll induce transient
5551 * write failures and random online/offline activity on leaf 0,
5552 * and we'll write random garbage to the randomly chosen leaf.
5553 */
5554 (void) snprintf(path0, sizeof (path0), ztest_dev_template,
5555 ztest_opts.zo_dir, ztest_opts.zo_pool,
5556 top * leaves + zs->zs_splits);
5557 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template,
5558 ztest_opts.zo_dir, ztest_opts.zo_pool,
5559 top * leaves + leaf);
5560
5561 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
5562 if (vd0 != NULL && vd0->vdev_top->vdev_islog)
5563 islog = B_TRUE;
5564
5565 /*
5566 * If the top-level vdev needs to be resilvered
5567 * then we only allow faults on the device that is
5568 * resilvering.
5569 */
5570 if (vd0 != NULL && maxfaults != 1 &&
5571 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) ||
5572 vd0->vdev_resilver_txg != 0)) {
5573 /*
5574 * Make vd0 explicitly claim to be unreadable,
5575 * or unwriteable, or reach behind its back
5576 * and close the underlying fd. We can do this if
5577 * maxfaults == 0 because we'll fail and reexecute,
5578 * and we can do it if maxfaults >= 2 because we'll
5579 * have enough redundancy. If maxfaults == 1, the
5580 * combination of this with injection of random data
5581 * corruption below exceeds the pool's fault tolerance.
5582 */
5583 vdev_file_t *vf = vd0->vdev_tsd;
5584
5585 zfs_dbgmsg("injecting fault to vdev %llu; maxfaults=%d",
5586 (long long)vd0->vdev_id, (int)maxfaults);
5587
5588 if (vf != NULL && ztest_random(3) == 0) {
5589 (void) close(vf->vf_vnode->v_fd);
5590 vf->vf_vnode->v_fd = -1;
5591 } else if (ztest_random(2) == 0) {
5592 vd0->vdev_cant_read = B_TRUE;
5593 } else {
5594 vd0->vdev_cant_write = B_TRUE;
5595 }
5596 guid0 = vd0->vdev_guid;
5597 }
5598 } else {
5599 /*
5600 * Inject errors on an l2cache device.
5601 */
5602 spa_aux_vdev_t *sav = &spa->spa_l2cache;
5603
5604 if (sav->sav_count == 0) {
5605 spa_config_exit(spa, SCL_STATE, FTAG);
5606 rw_exit(&ztest_name_lock);
5607 return;
5608 }
5609 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
5610 guid0 = vd0->vdev_guid;
5611 (void) strcpy(path0, vd0->vdev_path);
5612 (void) strcpy(pathrand, vd0->vdev_path);
5613
5614 leaf = 0;
5615 leaves = 1;
5616 maxfaults = INT_MAX; /* no limit on cache devices */
5617 }
5618
5619 spa_config_exit(spa, SCL_STATE, FTAG);
5620 rw_exit(&ztest_name_lock);
5621
5622 /*
5623 * If we can tolerate two or more faults, or we're dealing
5624 * with a slog, randomly online/offline vd0.
5625 */
5626 if ((maxfaults >= 2 || islog) && guid0 != 0) {
5627 if (ztest_random(10) < 6) {
5628 int flags = (ztest_random(2) == 0 ?
5629 ZFS_OFFLINE_TEMPORARY : 0);
5630
5631 /*
5632 * We have to grab the zs_name_lock as writer to
5633 * prevent a race between offlining a slog and
5634 * destroying a dataset. Offlining the slog will
5635 * grab a reference on the dataset which may cause
5636 * dmu_objset_destroy() to fail with EBUSY thus
5637 * leaving the dataset in an inconsistent state.
5638 */
5639 if (islog)
5640 rw_enter(&ztest_name_lock, RW_WRITER);
5641
5642 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY);
5643
5644 if (islog)
5645 rw_exit(&ztest_name_lock);
5646 } else {
5647 /*
5648 * Ideally we would like to be able to randomly
5649 * call vdev_[on|off]line without holding locks
5650 * to force unpredictable failures but the side
5651 * effects of vdev_[on|off]line prevent us from
5652 * doing so. We grab the ztest_vdev_lock here to
5653 * prevent a race between injection testing and
5654 * aux_vdev removal.
5655 */
5656 mutex_enter(&ztest_vdev_lock);
5657 (void) vdev_online(spa, guid0, 0, NULL);
5658 mutex_exit(&ztest_vdev_lock);
5659 }
5660 }
5661
5662 if (maxfaults == 0)
5663 return;
5664
5665 /*
5666 * We have at least single-fault tolerance, so inject data corruption.
5667 */
5668 fd = open(pathrand, O_RDWR);
5669
5670 if (fd == -1) /* we hit a gap in the device namespace */
5671 return;
5672
5673 fsize = lseek(fd, 0, SEEK_END);
5674
5675 while (--iters != 0) {
5676 /*
5677 * The offset must be chosen carefully to ensure that
5678 * we do not inject a given logical block with errors
5679 * on two different leaf devices, because ZFS can not
5680 * tolerate that (if maxfaults==1).
5681 *
5682 * We divide each leaf into chunks of size
5683 * (# leaves * SPA_MAXBLOCKSIZE * 4). Within each chunk
5684 * there is a series of ranges to which we can inject errors.
5685 * Each range can accept errors on only a single leaf vdev.
5686 * The error injection ranges are separated by ranges
5687 * which we will not inject errors on any device (DMZs).
5688 * Each DMZ must be large enough such that a single block
5689 * can not straddle it, so that a single block can not be
5690 * a target in two different injection ranges (on different
5691 * leaf vdevs).
5692 *
5693 * For example, with 3 leaves, each chunk looks like:
5694 * 0 to 32M: injection range for leaf 0
5695 * 32M to 64M: DMZ - no injection allowed
5696 * 64M to 96M: injection range for leaf 1
5697 * 96M to 128M: DMZ - no injection allowed
5698 * 128M to 160M: injection range for leaf 2
5699 * 160M to 192M: DMZ - no injection allowed
5700 */
5701 offset = ztest_random(fsize / (leaves << bshift)) *
5702 (leaves << bshift) + (leaf << bshift) +
5703 (ztest_random(1ULL << (bshift - 1)) & -8ULL);
5704
5705 /*
5706 * Only allow damage to the labels at one end of the vdev.
5707 *
5708 * If all labels are damaged, the device will be totally
5709 * inaccessible, which will result in loss of data,
5710 * because we also damage (parts of) the other side of
5711 * the mirror/raidz.
5712 *
5713 * Additionally, we will always have both an even and an
5714 * odd label, so that we can handle crashes in the
5715 * middle of vdev_config_sync().
5716 */
5717 if ((leaf & 1) == 0 && offset < VDEV_LABEL_START_SIZE)
5718 continue;
5719
5720 /*
5721 * The two end labels are stored at the "end" of the disk, but
5722 * the end of the disk (vdev_psize) is aligned to
5723 * sizeof (vdev_label_t).
5724 */
5725 uint64_t psize = P2ALIGN(fsize, sizeof (vdev_label_t));
5726 if ((leaf & 1) == 1 &&
5727 offset + sizeof (bad) > psize - VDEV_LABEL_END_SIZE)
5728 continue;
5729
5730 mutex_enter(&ztest_vdev_lock);
5731 if (mirror_save != zs->zs_mirrors) {
5732 mutex_exit(&ztest_vdev_lock);
5733 (void) close(fd);
5734 return;
5735 }
5736
5737 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
5738 fatal(1, "can't inject bad word at 0x%llx in %s",
5739 offset, pathrand);
5740
5741 mutex_exit(&ztest_vdev_lock);
5742
5743 if (ztest_opts.zo_verbose >= 7)
5744 (void) printf("injected bad word into %s,"
5745 " offset 0x%llx\n", pathrand, (u_longlong_t)offset);
5746 }
5747
5748 (void) close(fd);
5749 }
5750
5751 /*
5752 * Verify that DDT repair works as expected.
5753 */
5754 void
ztest_ddt_repair(ztest_ds_t * zd,uint64_t id)5755 ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
5756 {
5757 ztest_shared_t *zs = ztest_shared;
5758 spa_t *spa = ztest_spa;
5759 objset_t *os = zd->zd_os;
5760 ztest_od_t od[1];
5761 uint64_t object, blocksize, txg, pattern, psize;
5762 enum zio_checksum checksum = spa_dedup_checksum(spa);
5763 dmu_buf_t *db;
5764 dmu_tx_t *tx;
5765 abd_t *abd;
5766 blkptr_t blk;
5767 int copies = 2 * ZIO_DEDUPDITTO_MIN;
5768
5769 blocksize = ztest_random_blocksize();
5770 blocksize = MIN(blocksize, 2048); /* because we write so many */
5771
5772 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize,
5773 0, 0);
5774
5775 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
5776 return;
5777
5778 /*
5779 * Take the name lock as writer to prevent anyone else from changing
5780 * the pool and dataset properies we need to maintain during this test.
5781 */
5782 rw_enter(&ztest_name_lock, RW_WRITER);
5783
5784 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum,
5785 B_FALSE) != 0 ||
5786 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1,
5787 B_FALSE) != 0) {
5788 rw_exit(&ztest_name_lock);
5789 return;
5790 }
5791
5792 dmu_objset_stats_t dds;
5793 dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
5794 dmu_objset_fast_stat(os, &dds);
5795 dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
5796
5797 object = od[0].od_object;
5798 blocksize = od[0].od_blocksize;
5799 pattern = zs->zs_guid ^ dds.dds_guid;
5800
5801 ASSERT(object != 0);
5802
5803 tx = dmu_tx_create(os);
5804 dmu_tx_hold_write(tx, object, 0, copies * blocksize);
5805 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
5806 if (txg == 0) {
5807 rw_exit(&ztest_name_lock);
5808 return;
5809 }
5810
5811 /*
5812 * Write all the copies of our block.
5813 */
5814 for (int i = 0; i < copies; i++) {
5815 uint64_t offset = i * blocksize;
5816 int error = dmu_buf_hold(os, object, offset, FTAG, &db,
5817 DMU_READ_NO_PREFETCH);
5818 if (error != 0) {
5819 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u",
5820 os, (long long)object, (long long) offset, error);
5821 }
5822 ASSERT(db->db_offset == offset);
5823 ASSERT(db->db_size == blocksize);
5824 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) ||
5825 ztest_pattern_match(db->db_data, db->db_size, 0ULL));
5826 dmu_buf_will_fill(db, tx);
5827 ztest_pattern_set(db->db_data, db->db_size, pattern);
5828 dmu_buf_rele(db, FTAG);
5829 }
5830
5831 dmu_tx_commit(tx);
5832 txg_wait_synced(spa_get_dsl(spa), txg);
5833
5834 /*
5835 * Find out what block we got.
5836 */
5837 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db,
5838 DMU_READ_NO_PREFETCH));
5839 blk = *((dmu_buf_impl_t *)db)->db_blkptr;
5840 dmu_buf_rele(db, FTAG);
5841
5842 /*
5843 * Damage the block. Dedup-ditto will save us when we read it later.
5844 */
5845 psize = BP_GET_PSIZE(&blk);
5846 abd = abd_alloc_linear(psize, B_TRUE);
5847 ztest_pattern_set(abd_to_buf(abd), psize, ~pattern);
5848
5849 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk,
5850 abd, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE,
5851 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL));
5852
5853 abd_free(abd);
5854
5855 rw_exit(&ztest_name_lock);
5856 }
5857
5858 /*
5859 * Scrub the pool.
5860 */
5861 /* ARGSUSED */
5862 void
ztest_scrub(ztest_ds_t * zd,uint64_t id)5863 ztest_scrub(ztest_ds_t *zd, uint64_t id)
5864 {
5865 spa_t *spa = ztest_spa;
5866
5867 /*
5868 * Scrub in progress by device removal.
5869 */
5870 if (ztest_device_removal_active)
5871 return;
5872
5873 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5874 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */
5875 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5876 }
5877
5878 /*
5879 * Change the guid for the pool.
5880 */
5881 /* ARGSUSED */
5882 void
ztest_reguid(ztest_ds_t * zd,uint64_t id)5883 ztest_reguid(ztest_ds_t *zd, uint64_t id)
5884 {
5885 spa_t *spa = ztest_spa;
5886 uint64_t orig, load;
5887 int error;
5888
5889 if (ztest_opts.zo_mmp_test)
5890 return;
5891
5892 orig = spa_guid(spa);
5893 load = spa_load_guid(spa);
5894
5895 rw_enter(&ztest_name_lock, RW_WRITER);
5896 error = spa_change_guid(spa);
5897 rw_exit(&ztest_name_lock);
5898
5899 if (error != 0)
5900 return;
5901
5902 if (ztest_opts.zo_verbose >= 4) {
5903 (void) printf("Changed guid old %llu -> %llu\n",
5904 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa));
5905 }
5906
5907 VERIFY3U(orig, !=, spa_guid(spa));
5908 VERIFY3U(load, ==, spa_load_guid(spa));
5909 }
5910
5911 static vdev_t *
ztest_random_concrete_vdev_leaf(vdev_t * vd)5912 ztest_random_concrete_vdev_leaf(vdev_t *vd)
5913 {
5914 if (vd == NULL)
5915 return (NULL);
5916
5917 if (vd->vdev_children == 0)
5918 return (vd);
5919
5920 vdev_t *eligible[vd->vdev_children];
5921 int eligible_idx = 0, i;
5922 for (i = 0; i < vd->vdev_children; i++) {
5923 vdev_t *cvd = vd->vdev_child[i];
5924 if (cvd->vdev_top->vdev_removing)
5925 continue;
5926 if (cvd->vdev_children > 0 ||
5927 (vdev_is_concrete(cvd) && !cvd->vdev_detached)) {
5928 eligible[eligible_idx++] = cvd;
5929 }
5930 }
5931 VERIFY(eligible_idx > 0);
5932
5933 uint64_t child_no = ztest_random(eligible_idx);
5934 return (ztest_random_concrete_vdev_leaf(eligible[child_no]));
5935 }
5936
5937 /* ARGSUSED */
5938 void
ztest_initialize(ztest_ds_t * zd,uint64_t id)5939 ztest_initialize(ztest_ds_t *zd, uint64_t id)
5940 {
5941 spa_t *spa = ztest_spa;
5942 int error = 0;
5943
5944 mutex_enter(&ztest_vdev_lock);
5945
5946 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
5947
5948 /* Random leaf vdev */
5949 vdev_t *rand_vd = ztest_random_concrete_vdev_leaf(spa->spa_root_vdev);
5950 if (rand_vd == NULL) {
5951 spa_config_exit(spa, SCL_VDEV, FTAG);
5952 mutex_exit(&ztest_vdev_lock);
5953 return;
5954 }
5955
5956 /*
5957 * The random vdev we've selected may change as soon as we
5958 * drop the spa_config_lock. We create local copies of things
5959 * we're interested in.
5960 */
5961 uint64_t guid = rand_vd->vdev_guid;
5962 char *path = strdup(rand_vd->vdev_path);
5963 boolean_t active = rand_vd->vdev_initialize_thread != NULL;
5964
5965 zfs_dbgmsg("vd %p, guid %llu", rand_vd, guid);
5966 spa_config_exit(spa, SCL_VDEV, FTAG);
5967
5968 uint64_t cmd = ztest_random(POOL_INITIALIZE_FUNCS);
5969
5970 nvlist_t *vdev_guids = fnvlist_alloc();
5971 nvlist_t *vdev_errlist = fnvlist_alloc();
5972 fnvlist_add_uint64(vdev_guids, path, guid);
5973 error = spa_vdev_initialize(spa, vdev_guids, cmd, vdev_errlist);
5974 fnvlist_free(vdev_guids);
5975 fnvlist_free(vdev_errlist);
5976
5977 switch (cmd) {
5978 case POOL_INITIALIZE_CANCEL:
5979 if (ztest_opts.zo_verbose >= 4) {
5980 (void) printf("Cancel initialize %s", path);
5981 if (!active)
5982 (void) printf(" failed (no initialize active)");
5983 (void) printf("\n");
5984 }
5985 break;
5986 case POOL_INITIALIZE_START:
5987 if (ztest_opts.zo_verbose >= 4) {
5988 (void) printf("Start initialize %s", path);
5989 if (active && error == 0)
5990 (void) printf(" failed (already active)");
5991 else if (error != 0)
5992 (void) printf(" failed (error %d)", error);
5993 (void) printf("\n");
5994 }
5995 break;
5996 case POOL_INITIALIZE_SUSPEND:
5997 if (ztest_opts.zo_verbose >= 4) {
5998 (void) printf("Suspend initialize %s", path);
5999 if (!active)
6000 (void) printf(" failed (no initialize active)");
6001 (void) printf("\n");
6002 }
6003 break;
6004 }
6005 free(path);
6006 mutex_exit(&ztest_vdev_lock);
6007 }
6008
6009 /* ARGSUSED */
6010 void
ztest_trim(ztest_ds_t * zd,uint64_t id)6011 ztest_trim(ztest_ds_t *zd, uint64_t id)
6012 {
6013 spa_t *spa = ztest_spa;
6014 int error = 0;
6015
6016 mutex_enter(&ztest_vdev_lock);
6017
6018 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
6019
6020 /* Random leaf vdev */
6021 vdev_t *rand_vd = ztest_random_concrete_vdev_leaf(spa->spa_root_vdev);
6022 if (rand_vd == NULL) {
6023 spa_config_exit(spa, SCL_VDEV, FTAG);
6024 mutex_exit(&ztest_vdev_lock);
6025 return;
6026 }
6027
6028 /*
6029 * The random vdev we've selected may change as soon as we
6030 * drop the spa_config_lock. We create local copies of things
6031 * we're interested in.
6032 */
6033 uint64_t guid = rand_vd->vdev_guid;
6034 char *path = strdup(rand_vd->vdev_path);
6035 boolean_t active = rand_vd->vdev_trim_thread != NULL;
6036
6037 zfs_dbgmsg("vd %p, guid %llu", rand_vd, guid);
6038 spa_config_exit(spa, SCL_VDEV, FTAG);
6039
6040 uint64_t cmd = ztest_random(POOL_TRIM_FUNCS);
6041 uint64_t rate = 1 << ztest_random(30);
6042 boolean_t partial = (ztest_random(5) > 0);
6043 boolean_t secure = (ztest_random(5) > 0);
6044
6045 nvlist_t *vdev_guids = fnvlist_alloc();
6046 nvlist_t *vdev_errlist = fnvlist_alloc();
6047 fnvlist_add_uint64(vdev_guids, path, guid);
6048 error = spa_vdev_trim(spa, vdev_guids, cmd, rate, partial,
6049 secure, vdev_errlist);
6050 fnvlist_free(vdev_guids);
6051 fnvlist_free(vdev_errlist);
6052
6053 switch (cmd) {
6054 case POOL_TRIM_CANCEL:
6055 if (ztest_opts.zo_verbose >= 4) {
6056 (void) printf("Cancel TRIM %s", path);
6057 if (!active)
6058 (void) printf(" failed (no TRIM active)");
6059 (void) printf("\n");
6060 }
6061 break;
6062 case POOL_TRIM_START:
6063 if (ztest_opts.zo_verbose >= 4) {
6064 (void) printf("Start TRIM %s", path);
6065 if (active && error == 0)
6066 (void) printf(" failed (already active)");
6067 else if (error != 0)
6068 (void) printf(" failed (error %d)", error);
6069 (void) printf("\n");
6070 }
6071 break;
6072 case POOL_TRIM_SUSPEND:
6073 if (ztest_opts.zo_verbose >= 4) {
6074 (void) printf("Suspend TRIM %s", path);
6075 if (!active)
6076 (void) printf(" failed (no TRIM active)");
6077 (void) printf("\n");
6078 }
6079 break;
6080 }
6081 free(path);
6082 mutex_exit(&ztest_vdev_lock);
6083 }
6084
6085 /*
6086 * Verify pool integrity by running zdb.
6087 */
6088 static void
ztest_run_zdb(char * pool)6089 ztest_run_zdb(char *pool)
6090 {
6091 int status;
6092 char zdb[MAXPATHLEN + MAXNAMELEN + 20];
6093 char zbuf[1024];
6094 FILE *fp;
6095
6096 (void) snprintf(zdb, sizeof (zdb),
6097 "/usr/sbin/zdb -bcc%s%s -G -d -U %s "
6098 "-o zfs_reconstruct_indirect_combinations_max=65536 %s",
6099 ztest_opts.zo_verbose >= 3 ? "s" : "",
6100 ztest_opts.zo_verbose >= 4 ? "v" : "",
6101 spa_config_path,
6102 pool);
6103
6104 if (ztest_opts.zo_verbose >= 5)
6105 (void) printf("Executing %s\n", strstr(zdb, "zdb "));
6106
6107 fp = popen(zdb, "r");
6108
6109 while (fgets(zbuf, sizeof (zbuf), fp) != NULL)
6110 if (ztest_opts.zo_verbose >= 3)
6111 (void) printf("%s", zbuf);
6112
6113 status = pclose(fp);
6114
6115 if (status == 0)
6116 return;
6117
6118 ztest_dump_core = 0;
6119 if (WIFEXITED(status))
6120 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status));
6121 else
6122 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status));
6123 }
6124
6125 static void
ztest_walk_pool_directory(char * header)6126 ztest_walk_pool_directory(char *header)
6127 {
6128 spa_t *spa = NULL;
6129
6130 if (ztest_opts.zo_verbose >= 6)
6131 (void) printf("%s\n", header);
6132
6133 mutex_enter(&spa_namespace_lock);
6134 while ((spa = spa_next(spa)) != NULL)
6135 if (ztest_opts.zo_verbose >= 6)
6136 (void) printf("\t%s\n", spa_name(spa));
6137 mutex_exit(&spa_namespace_lock);
6138 }
6139
6140 static void
ztest_spa_import_export(char * oldname,char * newname)6141 ztest_spa_import_export(char *oldname, char *newname)
6142 {
6143 nvlist_t *config, *newconfig;
6144 uint64_t pool_guid;
6145 spa_t *spa;
6146 int error;
6147
6148 if (ztest_opts.zo_verbose >= 4) {
6149 (void) printf("import/export: old = %s, new = %s\n",
6150 oldname, newname);
6151 }
6152
6153 /*
6154 * Clean up from previous runs.
6155 */
6156 (void) spa_destroy(newname);
6157
6158 /*
6159 * Get the pool's configuration and guid.
6160 */
6161 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
6162
6163 /*
6164 * Kick off a scrub to tickle scrub/export races.
6165 */
6166 if (ztest_random(2) == 0)
6167 (void) spa_scan(spa, POOL_SCAN_SCRUB);
6168
6169 pool_guid = spa_guid(spa);
6170 spa_close(spa, FTAG);
6171
6172 ztest_walk_pool_directory("pools before export");
6173
6174 /*
6175 * Export it.
6176 */
6177 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE));
6178
6179 ztest_walk_pool_directory("pools after export");
6180
6181 /*
6182 * Try to import it.
6183 */
6184 newconfig = spa_tryimport(config);
6185 ASSERT(newconfig != NULL);
6186 nvlist_free(newconfig);
6187
6188 /*
6189 * Import it under the new name.
6190 */
6191 error = spa_import(newname, config, NULL, 0);
6192 if (error != 0) {
6193 dump_nvlist(config, 0);
6194 fatal(B_FALSE, "couldn't import pool %s as %s: error %u",
6195 oldname, newname, error);
6196 }
6197
6198 ztest_walk_pool_directory("pools after import");
6199
6200 /*
6201 * Try to import it again -- should fail with EEXIST.
6202 */
6203 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0));
6204
6205 /*
6206 * Try to import it under a different name -- should fail with EEXIST.
6207 */
6208 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0));
6209
6210 /*
6211 * Verify that the pool is no longer visible under the old name.
6212 */
6213 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
6214
6215 /*
6216 * Verify that we can open and close the pool using the new name.
6217 */
6218 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
6219 ASSERT(pool_guid == spa_guid(spa));
6220 spa_close(spa, FTAG);
6221
6222 nvlist_free(config);
6223 }
6224
6225 static void
ztest_resume(spa_t * spa)6226 ztest_resume(spa_t *spa)
6227 {
6228 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6)
6229 (void) printf("resuming from suspended state\n");
6230 spa_vdev_state_enter(spa, SCL_NONE);
6231 vdev_clear(spa, NULL);
6232 (void) spa_vdev_state_exit(spa, NULL, 0);
6233 (void) zio_resume(spa);
6234 }
6235
6236 static void *
ztest_resume_thread(void * arg)6237 ztest_resume_thread(void *arg)
6238 {
6239 spa_t *spa = arg;
6240
6241 while (!ztest_exiting) {
6242 if (spa_suspended(spa))
6243 ztest_resume(spa);
6244 (void) poll(NULL, 0, 100);
6245
6246 /*
6247 * Periodically change the zfs_compressed_arc_enabled setting.
6248 */
6249 if (ztest_random(10) == 0)
6250 zfs_compressed_arc_enabled = ztest_random(2);
6251
6252 /*
6253 * Periodically change the zfs_abd_scatter_enabled setting.
6254 */
6255 if (ztest_random(10) == 0)
6256 zfs_abd_scatter_enabled = ztest_random(2);
6257 }
6258 return (NULL);
6259 }
6260
6261 static void *
ztest_deadman_thread(void * arg)6262 ztest_deadman_thread(void *arg)
6263 {
6264 ztest_shared_t *zs = arg;
6265 spa_t *spa = ztest_spa;
6266 hrtime_t delta, total = 0;
6267
6268 for (;;) {
6269 delta = zs->zs_thread_stop - zs->zs_thread_start +
6270 MSEC2NSEC(zfs_deadman_synctime_ms);
6271
6272 (void) poll(NULL, 0, (int)NSEC2MSEC(delta));
6273
6274 /*
6275 * If the pool is suspended then fail immediately. Otherwise,
6276 * check to see if the pool is making any progress. If
6277 * vdev_deadman() discovers that there hasn't been any recent
6278 * I/Os then it will end up aborting the tests.
6279 */
6280 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) {
6281 fatal(0, "aborting test after %llu seconds because "
6282 "pool has transitioned to a suspended state.",
6283 zfs_deadman_synctime_ms / 1000);
6284 return (NULL);
6285 }
6286 vdev_deadman(spa->spa_root_vdev);
6287
6288 total += zfs_deadman_synctime_ms/1000;
6289 (void) printf("ztest has been running for %lld seconds\n",
6290 total);
6291 }
6292 }
6293
6294 static void
ztest_execute(int test,ztest_info_t * zi,uint64_t id)6295 ztest_execute(int test, ztest_info_t *zi, uint64_t id)
6296 {
6297 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets];
6298 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test);
6299 hrtime_t functime = gethrtime();
6300
6301 for (int i = 0; i < zi->zi_iters; i++)
6302 zi->zi_func(zd, id);
6303
6304 functime = gethrtime() - functime;
6305
6306 atomic_add_64(&zc->zc_count, 1);
6307 atomic_add_64(&zc->zc_time, functime);
6308
6309 if (ztest_opts.zo_verbose >= 4) {
6310 Dl_info dli;
6311 (void) dladdr((void *)zi->zi_func, &dli);
6312 (void) printf("%6.2f sec in %s\n",
6313 (double)functime / NANOSEC, dli.dli_sname);
6314 }
6315 }
6316
6317 static void *
ztest_thread(void * arg)6318 ztest_thread(void *arg)
6319 {
6320 int rand;
6321 uint64_t id = (uintptr_t)arg;
6322 ztest_shared_t *zs = ztest_shared;
6323 uint64_t call_next;
6324 hrtime_t now;
6325 ztest_info_t *zi;
6326 ztest_shared_callstate_t *zc;
6327
6328 while ((now = gethrtime()) < zs->zs_thread_stop) {
6329 /*
6330 * See if it's time to force a crash.
6331 */
6332 if (now > zs->zs_thread_kill)
6333 ztest_kill(zs);
6334
6335 /*
6336 * If we're getting ENOSPC with some regularity, stop.
6337 */
6338 if (zs->zs_enospc_count > 10)
6339 break;
6340
6341 /*
6342 * Pick a random function to execute.
6343 */
6344 rand = ztest_random(ZTEST_FUNCS);
6345 zi = &ztest_info[rand];
6346 zc = ZTEST_GET_SHARED_CALLSTATE(rand);
6347 call_next = zc->zc_next;
6348
6349 if (now >= call_next &&
6350 atomic_cas_64(&zc->zc_next, call_next, call_next +
6351 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) {
6352 ztest_execute(rand, zi, id);
6353 }
6354 }
6355
6356 return (NULL);
6357 }
6358
6359 static void
ztest_dataset_name(char * dsname,char * pool,int d)6360 ztest_dataset_name(char *dsname, char *pool, int d)
6361 {
6362 (void) snprintf(dsname, ZFS_MAX_DATASET_NAME_LEN, "%s/ds_%d", pool, d);
6363 }
6364
6365 static void
ztest_dataset_destroy(int d)6366 ztest_dataset_destroy(int d)
6367 {
6368 char name[ZFS_MAX_DATASET_NAME_LEN];
6369
6370 ztest_dataset_name(name, ztest_opts.zo_pool, d);
6371
6372 if (ztest_opts.zo_verbose >= 3)
6373 (void) printf("Destroying %s to free up space\n", name);
6374
6375 /*
6376 * Cleanup any non-standard clones and snapshots. In general,
6377 * ztest thread t operates on dataset (t % zopt_datasets),
6378 * so there may be more than one thing to clean up.
6379 */
6380 for (int t = d; t < ztest_opts.zo_threads;
6381 t += ztest_opts.zo_datasets) {
6382 ztest_dsl_dataset_cleanup(name, t);
6383 }
6384
6385 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
6386 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
6387 }
6388
6389 static void
ztest_dataset_dirobj_verify(ztest_ds_t * zd)6390 ztest_dataset_dirobj_verify(ztest_ds_t *zd)
6391 {
6392 uint64_t usedobjs, dirobjs, scratch;
6393
6394 /*
6395 * ZTEST_DIROBJ is the object directory for the entire dataset.
6396 * Therefore, the number of objects in use should equal the
6397 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
6398 * If not, we have an object leak.
6399 *
6400 * Note that we can only check this in ztest_dataset_open(),
6401 * when the open-context and syncing-context values agree.
6402 * That's because zap_count() returns the open-context value,
6403 * while dmu_objset_space() returns the rootbp fill count.
6404 */
6405 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
6406 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
6407 ASSERT3U(dirobjs + 1, ==, usedobjs);
6408 }
6409
6410 static int
ztest_dataset_open(int d)6411 ztest_dataset_open(int d)
6412 {
6413 ztest_ds_t *zd = &ztest_ds[d];
6414 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq;
6415 objset_t *os;
6416 zilog_t *zilog;
6417 char name[ZFS_MAX_DATASET_NAME_LEN];
6418 int error;
6419
6420 ztest_dataset_name(name, ztest_opts.zo_pool, d);
6421
6422 rw_enter(&ztest_name_lock, RW_READER);
6423
6424 error = ztest_dataset_create(name);
6425 if (error == ENOSPC) {
6426 rw_exit(&ztest_name_lock);
6427 ztest_record_enospc(FTAG);
6428 return (error);
6429 }
6430 ASSERT(error == 0 || error == EEXIST);
6431
6432 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE,
6433 B_TRUE, zd, &os));
6434 rw_exit(&ztest_name_lock);
6435
6436 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os);
6437
6438 zilog = zd->zd_zilog;
6439
6440 if (zilog->zl_header->zh_claim_lr_seq != 0 &&
6441 zilog->zl_header->zh_claim_lr_seq < committed_seq)
6442 fatal(0, "missing log records: claimed %llu < committed %llu",
6443 zilog->zl_header->zh_claim_lr_seq, committed_seq);
6444
6445 ztest_dataset_dirobj_verify(zd);
6446
6447 zil_replay(os, zd, ztest_replay_vector);
6448
6449 ztest_dataset_dirobj_verify(zd);
6450
6451 if (ztest_opts.zo_verbose >= 6)
6452 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n",
6453 zd->zd_name,
6454 (u_longlong_t)zilog->zl_parse_blk_count,
6455 (u_longlong_t)zilog->zl_parse_lr_count,
6456 (u_longlong_t)zilog->zl_replaying_seq);
6457
6458 zilog = zil_open(os, ztest_get_data);
6459
6460 if (zilog->zl_replaying_seq != 0 &&
6461 zilog->zl_replaying_seq < committed_seq)
6462 fatal(0, "missing log records: replayed %llu < committed %llu",
6463 zilog->zl_replaying_seq, committed_seq);
6464
6465 return (0);
6466 }
6467
6468 static void
ztest_dataset_close(int d)6469 ztest_dataset_close(int d)
6470 {
6471 ztest_ds_t *zd = &ztest_ds[d];
6472
6473 zil_close(zd->zd_zilog);
6474 dmu_objset_disown(zd->zd_os, B_TRUE, zd);
6475
6476 ztest_zd_fini(zd);
6477 }
6478
6479 /*
6480 * Kick off threads to run tests on all datasets in parallel.
6481 */
6482 static void
ztest_run(ztest_shared_t * zs)6483 ztest_run(ztest_shared_t *zs)
6484 {
6485 thread_t *tid;
6486 spa_t *spa;
6487 objset_t *os;
6488 thread_t resume_tid;
6489 int error;
6490
6491 ztest_exiting = B_FALSE;
6492
6493 /*
6494 * Initialize parent/child shared state.
6495 */
6496 mutex_init(&ztest_checkpoint_lock, NULL, USYNC_THREAD, NULL);
6497 mutex_init(&ztest_vdev_lock, NULL, USYNC_THREAD, NULL);
6498 rw_init(&ztest_name_lock, NULL, USYNC_THREAD, NULL);
6499
6500 zs->zs_thread_start = gethrtime();
6501 zs->zs_thread_stop =
6502 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC;
6503 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
6504 zs->zs_thread_kill = zs->zs_thread_stop;
6505 if (ztest_random(100) < ztest_opts.zo_killrate) {
6506 zs->zs_thread_kill -=
6507 ztest_random(ztest_opts.zo_passtime * NANOSEC);
6508 }
6509
6510 mutex_init(&zcl.zcl_callbacks_lock, NULL, USYNC_THREAD, NULL);
6511
6512 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
6513 offsetof(ztest_cb_data_t, zcd_node));
6514
6515 /*
6516 * Open our pool.
6517 */
6518 kernel_init(FREAD | FWRITE);
6519 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
6520 metaslab_preload_limit = ztest_random(20) + 1;
6521 ztest_spa = spa;
6522
6523 dmu_objset_stats_t dds;
6524 VERIFY0(ztest_dmu_objset_own(ztest_opts.zo_pool,
6525 DMU_OST_ANY, B_TRUE, B_TRUE, FTAG, &os));
6526 dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
6527 dmu_objset_fast_stat(os, &dds);
6528 dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
6529 zs->zs_guid = dds.dds_guid;
6530 dmu_objset_disown(os, B_TRUE, FTAG);
6531
6532 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN;
6533
6534 /*
6535 * We don't expect the pool to suspend unless maxfaults == 0,
6536 * in which case ztest_fault_inject() temporarily takes away
6537 * the only valid replica.
6538 */
6539 if (MAXFAULTS() == 0)
6540 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT;
6541 else
6542 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC;
6543
6544 /*
6545 * Create a thread to periodically resume suspended I/O.
6546 */
6547 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND,
6548 &resume_tid) == 0);
6549
6550 /*
6551 * Create a deadman thread to abort() if we hang.
6552 */
6553 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND,
6554 NULL) == 0);
6555
6556 /*
6557 * Verify that we can safely inquire about any object,
6558 * whether it's allocated or not. To make it interesting,
6559 * we probe a 5-wide window around each power of two.
6560 * This hits all edge cases, including zero and the max.
6561 */
6562 for (int t = 0; t < 64; t++) {
6563 for (int d = -5; d <= 5; d++) {
6564 error = dmu_object_info(spa->spa_meta_objset,
6565 (1ULL << t) + d, NULL);
6566 ASSERT(error == 0 || error == ENOENT ||
6567 error == EINVAL);
6568 }
6569 }
6570
6571 /*
6572 * If we got any ENOSPC errors on the previous run, destroy something.
6573 */
6574 if (zs->zs_enospc_count != 0) {
6575 int d = ztest_random(ztest_opts.zo_datasets);
6576 ztest_dataset_destroy(d);
6577 }
6578 zs->zs_enospc_count = 0;
6579
6580 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t),
6581 UMEM_NOFAIL);
6582
6583 if (ztest_opts.zo_verbose >= 4)
6584 (void) printf("starting main threads...\n");
6585
6586 /*
6587 * Kick off all the tests that run in parallel.
6588 */
6589 for (int t = 0; t < ztest_opts.zo_threads; t++) {
6590 if (t < ztest_opts.zo_datasets &&
6591 ztest_dataset_open(t) != 0)
6592 return;
6593 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t,
6594 THR_BOUND, &tid[t]) == 0);
6595 }
6596
6597 /*
6598 * Wait for all of the tests to complete. We go in reverse order
6599 * so we don't close datasets while threads are still using them.
6600 */
6601 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) {
6602 VERIFY(thr_join(tid[t], NULL, NULL) == 0);
6603 if (t < ztest_opts.zo_datasets)
6604 ztest_dataset_close(t);
6605 }
6606
6607 txg_wait_synced(spa_get_dsl(spa), 0);
6608
6609 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
6610 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
6611 zfs_dbgmsg_print(FTAG);
6612
6613 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t));
6614
6615 /* Kill the resume thread */
6616 ztest_exiting = B_TRUE;
6617 VERIFY(thr_join(resume_tid, NULL, NULL) == 0);
6618 ztest_resume(spa);
6619
6620 /*
6621 * Right before closing the pool, kick off a bunch of async I/O;
6622 * spa_close() should wait for it to complete.
6623 */
6624 for (uint64_t object = 1; object < 50; object++) {
6625 dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20,
6626 ZIO_PRIORITY_SYNC_READ);
6627 }
6628
6629 spa_close(spa, FTAG);
6630
6631 /*
6632 * Verify that we can loop over all pools.
6633 */
6634 mutex_enter(&spa_namespace_lock);
6635 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
6636 if (ztest_opts.zo_verbose > 3)
6637 (void) printf("spa_next: found %s\n", spa_name(spa));
6638 mutex_exit(&spa_namespace_lock);
6639
6640 /*
6641 * Verify that we can export the pool and reimport it under a
6642 * different name.
6643 */
6644 if ((ztest_random(2) == 0) && !ztest_opts.zo_mmp_test) {
6645 char name[ZFS_MAX_DATASET_NAME_LEN];
6646 (void) snprintf(name, sizeof (name), "%s_import",
6647 ztest_opts.zo_pool);
6648 ztest_spa_import_export(ztest_opts.zo_pool, name);
6649 ztest_spa_import_export(name, ztest_opts.zo_pool);
6650 }
6651
6652 kernel_fini();
6653
6654 list_destroy(&zcl.zcl_callbacks);
6655
6656 mutex_destroy(&zcl.zcl_callbacks_lock);
6657
6658 rw_destroy(&ztest_name_lock);
6659 mutex_destroy(&ztest_vdev_lock);
6660 mutex_destroy(&ztest_checkpoint_lock);
6661 }
6662
6663 static void
ztest_freeze(void)6664 ztest_freeze(void)
6665 {
6666 ztest_ds_t *zd = &ztest_ds[0];
6667 spa_t *spa;
6668 int numloops = 0;
6669
6670 if (ztest_opts.zo_verbose >= 3)
6671 (void) printf("testing spa_freeze()...\n");
6672
6673 kernel_init(FREAD | FWRITE);
6674 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
6675 VERIFY3U(0, ==, ztest_dataset_open(0));
6676 ztest_spa = spa;
6677
6678 /*
6679 * Force the first log block to be transactionally allocated.
6680 * We have to do this before we freeze the pool -- otherwise
6681 * the log chain won't be anchored.
6682 */
6683 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
6684 ztest_dmu_object_alloc_free(zd, 0);
6685 zil_commit(zd->zd_zilog, 0);
6686 }
6687
6688 txg_wait_synced(spa_get_dsl(spa), 0);
6689
6690 /*
6691 * Freeze the pool. This stops spa_sync() from doing anything,
6692 * so that the only way to record changes from now on is the ZIL.
6693 */
6694 spa_freeze(spa);
6695
6696 /*
6697 * Because it is hard to predict how much space a write will actually
6698 * require beforehand, we leave ourselves some fudge space to write over
6699 * capacity.
6700 */
6701 uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2;
6702
6703 /*
6704 * Run tests that generate log records but don't alter the pool config
6705 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
6706 * We do a txg_wait_synced() after each iteration to force the txg
6707 * to increase well beyond the last synced value in the uberblock.
6708 * The ZIL should be OK with that.
6709 *
6710 * Run a random number of times less than zo_maxloops and ensure we do
6711 * not run out of space on the pool.
6712 */
6713 while (ztest_random(10) != 0 &&
6714 numloops++ < ztest_opts.zo_maxloops &&
6715 metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) {
6716 ztest_od_t od;
6717 ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
6718 VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE));
6719 ztest_io(zd, od.od_object,
6720 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
6721 txg_wait_synced(spa_get_dsl(spa), 0);
6722 }
6723
6724 /*
6725 * Commit all of the changes we just generated.
6726 */
6727 zil_commit(zd->zd_zilog, 0);
6728 txg_wait_synced(spa_get_dsl(spa), 0);
6729
6730 /*
6731 * Close our dataset and close the pool.
6732 */
6733 ztest_dataset_close(0);
6734 spa_close(spa, FTAG);
6735 kernel_fini();
6736
6737 /*
6738 * Open and close the pool and dataset to induce log replay.
6739 */
6740 kernel_init(FREAD | FWRITE);
6741 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
6742 ASSERT(spa_freeze_txg(spa) == UINT64_MAX);
6743 VERIFY3U(0, ==, ztest_dataset_open(0));
6744 ztest_spa = spa;
6745 txg_wait_synced(spa_get_dsl(spa), 0);
6746 ztest_dataset_close(0);
6747 ztest_reguid(NULL, 0);
6748
6749 spa_close(spa, FTAG);
6750 kernel_fini();
6751 }
6752
6753 void
print_time(hrtime_t t,char * timebuf)6754 print_time(hrtime_t t, char *timebuf)
6755 {
6756 hrtime_t s = t / NANOSEC;
6757 hrtime_t m = s / 60;
6758 hrtime_t h = m / 60;
6759 hrtime_t d = h / 24;
6760
6761 s -= m * 60;
6762 m -= h * 60;
6763 h -= d * 24;
6764
6765 timebuf[0] = '\0';
6766
6767 if (d)
6768 (void) sprintf(timebuf,
6769 "%llud%02lluh%02llum%02llus", d, h, m, s);
6770 else if (h)
6771 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s);
6772 else if (m)
6773 (void) sprintf(timebuf, "%llum%02llus", m, s);
6774 else
6775 (void) sprintf(timebuf, "%llus", s);
6776 }
6777
6778 static nvlist_t *
make_random_props()6779 make_random_props()
6780 {
6781 nvlist_t *props;
6782
6783 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
6784
6785 if (ztest_random(2) == 0)
6786 return (props);
6787 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0);
6788
6789 return (props);
6790 }
6791
6792 /*
6793 * Import a storage pool with the given name.
6794 */
6795 static void
ztest_import(ztest_shared_t * zs)6796 ztest_import(ztest_shared_t *zs)
6797 {
6798 importargs_t args = { 0 };
6799 spa_t *spa;
6800 nvlist_t *cfg = NULL;
6801 int nsearch = 1;
6802 char *searchdirs[nsearch];
6803 char *name = ztest_opts.zo_pool;
6804 int flags = ZFS_IMPORT_MISSING_LOG;
6805 int error;
6806
6807 mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
6808 rw_init(&ztest_name_lock, NULL, USYNC_THREAD, NULL);
6809
6810 kernel_init(FREAD | FWRITE);
6811
6812 searchdirs[0] = ztest_opts.zo_dir;
6813 args.paths = nsearch;
6814 args.path = searchdirs;
6815 args.can_be_active = B_FALSE;
6816
6817 error = zpool_find_config(NULL, name, &cfg, &args,
6818 &libzpool_config_ops);
6819 if (error)
6820 (void) fatal(0, "No pools found\n");
6821
6822 VERIFY0(spa_import(name, cfg, NULL, flags));
6823 VERIFY0(spa_open(name, &spa, FTAG));
6824 zs->zs_metaslab_sz =
6825 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
6826 spa_close(spa, FTAG);
6827
6828 kernel_fini();
6829
6830 if (!ztest_opts.zo_mmp_test) {
6831 ztest_run_zdb(ztest_opts.zo_pool);
6832 ztest_freeze();
6833 ztest_run_zdb(ztest_opts.zo_pool);
6834 }
6835
6836 rw_destroy(&ztest_name_lock);
6837 mutex_destroy(&ztest_vdev_lock);
6838 }
6839
6840 /*
6841 * Create a storage pool with the given name and initial vdev size.
6842 * Then test spa_freeze() functionality.
6843 */
6844 static void
ztest_init(ztest_shared_t * zs)6845 ztest_init(ztest_shared_t *zs)
6846 {
6847 spa_t *spa;
6848 nvlist_t *nvroot, *props;
6849
6850 mutex_init(&ztest_vdev_lock, NULL, USYNC_THREAD, NULL);
6851 mutex_init(&ztest_checkpoint_lock, NULL, USYNC_THREAD, NULL);
6852 rw_init(&ztest_name_lock, NULL, USYNC_THREAD, NULL);
6853
6854 kernel_init(FREAD | FWRITE);
6855
6856 /*
6857 * Create the storage pool.
6858 */
6859 (void) spa_destroy(ztest_opts.zo_pool);
6860 ztest_shared->zs_vdev_next_leaf = 0;
6861 zs->zs_splits = 0;
6862 zs->zs_mirrors = ztest_opts.zo_mirrors;
6863 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
6864 NULL, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
6865 props = make_random_props();
6866 for (int i = 0; i < SPA_FEATURES; i++) {
6867 char buf[1024];
6868
6869 /*
6870 * 75% chance of using the log space map feature. We want ztest
6871 * to exercise both the code paths that use the log space map
6872 * feature and the ones that don't.
6873 */
6874 if (i == SPA_FEATURE_LOG_SPACEMAP && ztest_random(4) == 0)
6875 continue;
6876
6877 (void) snprintf(buf, sizeof (buf), "feature@%s",
6878 spa_feature_table[i].fi_uname);
6879 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0));
6880 }
6881 VERIFY3U(0, ==,
6882 spa_create(ztest_opts.zo_pool, nvroot, props, NULL, NULL));
6883 nvlist_free(nvroot);
6884 nvlist_free(props);
6885
6886 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
6887 zs->zs_metaslab_sz =
6888 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
6889
6890 spa_close(spa, FTAG);
6891
6892 kernel_fini();
6893
6894 if (!ztest_opts.zo_mmp_test) {
6895 ztest_run_zdb(ztest_opts.zo_pool);
6896 ztest_freeze();
6897 ztest_run_zdb(ztest_opts.zo_pool);
6898 }
6899
6900 rw_destroy(&ztest_name_lock);
6901 mutex_destroy(&ztest_vdev_lock);
6902 mutex_destroy(&ztest_checkpoint_lock);
6903 }
6904
6905 static void
setup_data_fd(void)6906 setup_data_fd(void)
6907 {
6908 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX";
6909
6910 ztest_fd_data = mkstemp(ztest_name_data);
6911 ASSERT3S(ztest_fd_data, >=, 0);
6912 (void) unlink(ztest_name_data);
6913 }
6914
6915 static int
shared_data_size(ztest_shared_hdr_t * hdr)6916 shared_data_size(ztest_shared_hdr_t *hdr)
6917 {
6918 int size;
6919
6920 size = hdr->zh_hdr_size;
6921 size += hdr->zh_opts_size;
6922 size += hdr->zh_size;
6923 size += hdr->zh_stats_size * hdr->zh_stats_count;
6924 size += hdr->zh_ds_size * hdr->zh_ds_count;
6925
6926 return (size);
6927 }
6928
6929 static void
setup_hdr(void)6930 setup_hdr(void)
6931 {
6932 int size;
6933 ztest_shared_hdr_t *hdr;
6934
6935 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
6936 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
6937 ASSERT(hdr != MAP_FAILED);
6938
6939 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t)));
6940
6941 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t);
6942 hdr->zh_opts_size = sizeof (ztest_shared_opts_t);
6943 hdr->zh_size = sizeof (ztest_shared_t);
6944 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t);
6945 hdr->zh_stats_count = ZTEST_FUNCS;
6946 hdr->zh_ds_size = sizeof (ztest_shared_ds_t);
6947 hdr->zh_ds_count = ztest_opts.zo_datasets;
6948
6949 size = shared_data_size(hdr);
6950 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size));
6951
6952 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
6953 }
6954
6955 static void
setup_data(void)6956 setup_data(void)
6957 {
6958 int size, offset;
6959 ztest_shared_hdr_t *hdr;
6960 uint8_t *buf;
6961
6962 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
6963 PROT_READ, MAP_SHARED, ztest_fd_data, 0);
6964 ASSERT(hdr != MAP_FAILED);
6965
6966 size = shared_data_size(hdr);
6967
6968 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
6969 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()),
6970 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
6971 ASSERT(hdr != MAP_FAILED);
6972 buf = (uint8_t *)hdr;
6973
6974 offset = hdr->zh_hdr_size;
6975 ztest_shared_opts = (void *)&buf[offset];
6976 offset += hdr->zh_opts_size;
6977 ztest_shared = (void *)&buf[offset];
6978 offset += hdr->zh_size;
6979 ztest_shared_callstate = (void *)&buf[offset];
6980 offset += hdr->zh_stats_size * hdr->zh_stats_count;
6981 ztest_shared_ds = (void *)&buf[offset];
6982 }
6983
6984 static boolean_t
exec_child(char * cmd,char * libpath,boolean_t ignorekill,int * statusp)6985 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
6986 {
6987 pid_t pid;
6988 int status;
6989 char *cmdbuf = NULL;
6990
6991 pid = fork();
6992
6993 if (cmd == NULL) {
6994 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
6995 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN);
6996 cmd = cmdbuf;
6997 }
6998
6999 if (pid == -1)
7000 fatal(1, "fork failed");
7001
7002 if (pid == 0) { /* child */
7003 char *emptyargv[2] = { cmd, NULL };
7004 char fd_data_str[12];
7005
7006 struct rlimit rl = { 1024, 1024 };
7007 (void) setrlimit(RLIMIT_NOFILE, &rl);
7008
7009 (void) close(ztest_fd_rand);
7010 VERIFY3U(11, >=,
7011 snprintf(fd_data_str, 12, "%d", ztest_fd_data));
7012 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
7013
7014 (void) enable_extended_FILE_stdio(-1, -1);
7015 if (libpath != NULL)
7016 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1));
7017 (void) execv(cmd, emptyargv);
7018 ztest_dump_core = B_FALSE;
7019 fatal(B_TRUE, "exec failed: %s", cmd);
7020 }
7021
7022 if (cmdbuf != NULL) {
7023 umem_free(cmdbuf, MAXPATHLEN);
7024 cmd = NULL;
7025 }
7026
7027 while (waitpid(pid, &status, 0) != pid)
7028 continue;
7029 if (statusp != NULL)
7030 *statusp = status;
7031
7032 if (WIFEXITED(status)) {
7033 if (WEXITSTATUS(status) != 0) {
7034 (void) fprintf(stderr, "child exited with code %d\n",
7035 WEXITSTATUS(status));
7036 exit(2);
7037 }
7038 return (B_FALSE);
7039 } else if (WIFSIGNALED(status)) {
7040 if (!ignorekill || WTERMSIG(status) != SIGKILL) {
7041 (void) fprintf(stderr, "child died with signal %d\n",
7042 WTERMSIG(status));
7043 exit(3);
7044 }
7045 return (B_TRUE);
7046 } else {
7047 (void) fprintf(stderr, "something strange happened to child\n");
7048 exit(4);
7049 /* NOTREACHED */
7050 }
7051 }
7052
7053 static void
ztest_run_init(void)7054 ztest_run_init(void)
7055 {
7056 ztest_shared_t *zs = ztest_shared;
7057
7058 /*
7059 * Blow away any existing copy of zpool.cache
7060 */
7061 (void) remove(spa_config_path);
7062
7063 if (ztest_opts.zo_init == 0) {
7064 if (ztest_opts.zo_verbose >= 1)
7065 (void) printf("Importing pool %s\n",
7066 ztest_opts.zo_pool);
7067 ztest_import(zs);
7068 return;
7069 }
7070
7071 /*
7072 * Create and initialize our storage pool.
7073 */
7074 for (int i = 1; i <= ztest_opts.zo_init; i++) {
7075 bzero(zs, sizeof (ztest_shared_t));
7076 if (ztest_opts.zo_verbose >= 3 &&
7077 ztest_opts.zo_init != 1) {
7078 (void) printf("ztest_init(), pass %d\n", i);
7079 }
7080 ztest_init(zs);
7081 }
7082 }
7083
7084 int
main(int argc,char ** argv)7085 main(int argc, char **argv)
7086 {
7087 int kills = 0;
7088 int iters = 0;
7089 int older = 0;
7090 int newer = 0;
7091 ztest_shared_t *zs;
7092 ztest_info_t *zi;
7093 ztest_shared_callstate_t *zc;
7094 char timebuf[100];
7095 char numbuf[NN_NUMBUF_SZ];
7096 char *cmd;
7097 boolean_t hasalt;
7098 char *fd_data_str = getenv("ZTEST_FD_DATA");
7099
7100 (void) setvbuf(stdout, NULL, _IOLBF, 0);
7101
7102 dprintf_setup(&argc, argv);
7103 zfs_deadman_synctime_ms = 300000;
7104 /*
7105 * As two-word space map entries may not come up often (especially
7106 * if pool and vdev sizes are small) we want to force at least some
7107 * of them so the feature get tested.
7108 */
7109 zfs_force_some_double_word_sm_entries = B_TRUE;
7110
7111 /*
7112 * Verify that even extensively damaged split blocks with many
7113 * segments can be reconstructed in a reasonable amount of time
7114 * when reconstruction is known to be possible.
7115 */
7116 zfs_reconstruct_indirect_damage_fraction = 4;
7117
7118 ztest_fd_rand = open("/dev/urandom", O_RDONLY);
7119 ASSERT3S(ztest_fd_rand, >=, 0);
7120
7121 if (!fd_data_str) {
7122 process_options(argc, argv);
7123
7124 setup_data_fd();
7125 setup_hdr();
7126 setup_data();
7127 bcopy(&ztest_opts, ztest_shared_opts,
7128 sizeof (*ztest_shared_opts));
7129 } else {
7130 ztest_fd_data = atoi(fd_data_str);
7131 setup_data();
7132 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts));
7133 }
7134 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
7135
7136 /* Override location of zpool.cache */
7137 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache",
7138 ztest_opts.zo_dir), !=, -1);
7139
7140 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t),
7141 UMEM_NOFAIL);
7142 zs = ztest_shared;
7143
7144 if (fd_data_str) {
7145 metaslab_force_ganging = ztest_opts.zo_metaslab_force_ganging;
7146 metaslab_df_alloc_threshold =
7147 zs->zs_metaslab_df_alloc_threshold;
7148
7149 if (zs->zs_do_init)
7150 ztest_run_init();
7151 else
7152 ztest_run(zs);
7153 exit(0);
7154 }
7155
7156 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0);
7157
7158 if (ztest_opts.zo_verbose >= 1) {
7159 (void) printf("%llu vdevs, %d datasets, %d threads,"
7160 " %llu seconds...\n",
7161 (u_longlong_t)ztest_opts.zo_vdevs,
7162 ztest_opts.zo_datasets,
7163 ztest_opts.zo_threads,
7164 (u_longlong_t)ztest_opts.zo_time);
7165 }
7166
7167 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL);
7168 (void) strlcpy(cmd, getexecname(), MAXNAMELEN);
7169
7170 zs->zs_do_init = B_TRUE;
7171 if (strlen(ztest_opts.zo_alt_ztest) != 0) {
7172 if (ztest_opts.zo_verbose >= 1) {
7173 (void) printf("Executing older ztest for "
7174 "initialization: %s\n", ztest_opts.zo_alt_ztest);
7175 }
7176 VERIFY(!exec_child(ztest_opts.zo_alt_ztest,
7177 ztest_opts.zo_alt_libpath, B_FALSE, NULL));
7178 } else {
7179 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL));
7180 }
7181 zs->zs_do_init = B_FALSE;
7182
7183 zs->zs_proc_start = gethrtime();
7184 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC;
7185
7186 for (int f = 0; f < ZTEST_FUNCS; f++) {
7187 zi = &ztest_info[f];
7188 zc = ZTEST_GET_SHARED_CALLSTATE(f);
7189 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
7190 zc->zc_next = UINT64_MAX;
7191 else
7192 zc->zc_next = zs->zs_proc_start +
7193 ztest_random(2 * zi->zi_interval[0] + 1);
7194 }
7195
7196 /*
7197 * Run the tests in a loop. These tests include fault injection
7198 * to verify that self-healing data works, and forced crashes
7199 * to verify that we never lose on-disk consistency.
7200 */
7201 while (gethrtime() < zs->zs_proc_stop) {
7202 int status;
7203 boolean_t killed;
7204
7205 /*
7206 * Initialize the workload counters for each function.
7207 */
7208 for (int f = 0; f < ZTEST_FUNCS; f++) {
7209 zc = ZTEST_GET_SHARED_CALLSTATE(f);
7210 zc->zc_count = 0;
7211 zc->zc_time = 0;
7212 }
7213
7214 /* Set the allocation switch size */
7215 zs->zs_metaslab_df_alloc_threshold =
7216 ztest_random(zs->zs_metaslab_sz / 4) + 1;
7217
7218 if (!hasalt || ztest_random(2) == 0) {
7219 if (hasalt && ztest_opts.zo_verbose >= 1) {
7220 (void) printf("Executing newer ztest: %s\n",
7221 cmd);
7222 }
7223 newer++;
7224 killed = exec_child(cmd, NULL, B_TRUE, &status);
7225 } else {
7226 if (hasalt && ztest_opts.zo_verbose >= 1) {
7227 (void) printf("Executing older ztest: %s\n",
7228 ztest_opts.zo_alt_ztest);
7229 }
7230 older++;
7231 killed = exec_child(ztest_opts.zo_alt_ztest,
7232 ztest_opts.zo_alt_libpath, B_TRUE, &status);
7233 }
7234
7235 if (killed)
7236 kills++;
7237 iters++;
7238
7239 if (ztest_opts.zo_verbose >= 1) {
7240 hrtime_t now = gethrtime();
7241
7242 now = MIN(now, zs->zs_proc_stop);
7243 print_time(zs->zs_proc_stop - now, timebuf);
7244 nicenum(zs->zs_space, numbuf, sizeof (numbuf));
7245
7246 (void) printf("Pass %3d, %8s, %3llu ENOSPC, "
7247 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
7248 iters,
7249 WIFEXITED(status) ? "Complete" : "SIGKILL",
7250 (u_longlong_t)zs->zs_enospc_count,
7251 100.0 * zs->zs_alloc / zs->zs_space,
7252 numbuf,
7253 100.0 * (now - zs->zs_proc_start) /
7254 (ztest_opts.zo_time * NANOSEC), timebuf);
7255 }
7256
7257 if (ztest_opts.zo_verbose >= 2) {
7258 (void) printf("\nWorkload summary:\n\n");
7259 (void) printf("%7s %9s %s\n",
7260 "Calls", "Time", "Function");
7261 (void) printf("%7s %9s %s\n",
7262 "-----", "----", "--------");
7263 for (int f = 0; f < ZTEST_FUNCS; f++) {
7264 Dl_info dli;
7265
7266 zi = &ztest_info[f];
7267 zc = ZTEST_GET_SHARED_CALLSTATE(f);
7268 print_time(zc->zc_time, timebuf);
7269 (void) dladdr((void *)zi->zi_func, &dli);
7270 (void) printf("%7llu %9s %s\n",
7271 (u_longlong_t)zc->zc_count, timebuf,
7272 dli.dli_sname);
7273 }
7274 (void) printf("\n");
7275 }
7276
7277 if (!ztest_opts.zo_mmp_test)
7278 ztest_run_zdb(ztest_opts.zo_pool);
7279 }
7280
7281 if (ztest_opts.zo_verbose >= 1) {
7282 if (hasalt) {
7283 (void) printf("%d runs of older ztest: %s\n", older,
7284 ztest_opts.zo_alt_ztest);
7285 (void) printf("%d runs of newer ztest: %s\n", newer,
7286 cmd);
7287 }
7288 (void) printf("%d killed, %d completed, %.0f%% kill rate\n",
7289 kills, iters - kills, (100.0 * kills) / MAX(1, iters));
7290 }
7291
7292 umem_free(cmd, MAXNAMELEN);
7293
7294 return (0);
7295 }
7296