zdb.c revision 770499e185d15678ccb0be57ebc626ad18d93383
1fa9e406ahrens/*
2fa9e406ahrens * CDDL HEADER START
3fa9e406ahrens *
4fa9e406ahrens * The contents of this file are subject to the terms of the
5ea8dc4beschrock * Common Development and Distribution License (the "License").
6ea8dc4beschrock * You may not use this file except in compliance with the License.
7fa9e406ahrens *
8fa9e406ahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9fa9e406ahrens * or http://www.opensolaris.org/os/licensing.
10fa9e406ahrens * See the License for the specific language governing permissions
11fa9e406ahrens * and limitations under the License.
12fa9e406ahrens *
13fa9e406ahrens * When distributing Covered Code, include this CDDL HEADER in each
14fa9e406ahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15fa9e406ahrens * If applicable, add the following below this CDDL HEADER, with the
16fa9e406ahrens * fields enclosed by brackets "[]" replaced with your own identifying
17fa9e406ahrens * information: Portions Copyright [yyyy] [name of copyright owner]
18fa9e406ahrens *
19fa9e406ahrens * CDDL HEADER END
20fa9e406ahrens */
21ad135b5Christopher Siden
22fa9e406ahrens/*
238f2529dMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
2429bdd2fPavel Zakharov * Copyright (c) 2011, 2016 by Delphix. All rights reserved.
25c3d26abMatthew Ahrens * Copyright (c) 2014 Integros [integros.com]
26ed61ec1Yuri Pankov * Copyright 2017 Nexenta Systems, Inc.
27fa9e406ahrens */
28fa9e406ahrens
29fa9e406ahrens#include <stdio.h>
30490d05bMatthew Ahrens#include <unistd.h>
31004388ecasper#include <stdio_ext.h>
32fa9e406ahrens#include <stdlib.h>
3344cd46cbillm#include <ctype.h>
34fa9e406ahrens#include <sys/zfs_context.h>
35fa9e406ahrens#include <sys/spa.h>
36fa9e406ahrens#include <sys/spa_impl.h>
37fa9e406ahrens#include <sys/dmu.h>
38fa9e406ahrens#include <sys/zap.h>
39fa9e406ahrens#include <sys/fs/zfs.h>
40fa9e406ahrens#include <sys/zfs_znode.h>
410a586ceMark Shellenbaum#include <sys/zfs_sa.h>
420a586ceMark Shellenbaum#include <sys/sa.h>
430a586ceMark Shellenbaum#include <sys/sa_impl.h>
44fa9e406ahrens#include <sys/vdev.h>
45fa9e406ahrens#include <sys/vdev_impl.h>
46fa9e406ahrens#include <sys/metaslab_impl.h>
47fa9e406ahrens#include <sys/dmu_objset.h>
48fa9e406ahrens#include <sys/dsl_dir.h>
49fa9e406ahrens#include <sys/dsl_dataset.h>
50fa9e406ahrens#include <sys/dsl_pool.h>
51fa9e406ahrens#include <sys/dbuf.h>
52fa9e406ahrens#include <sys/zil.h>
53fa9e406ahrens#include <sys/zil_impl.h>
54fa9e406ahrens#include <sys/stat.h>
55fa9e406ahrens#include <sys/resource.h>
56fa9e406ahrens#include <sys/dmu_traverse.h>
57fa9e406ahrens#include <sys/zio_checksum.h>
58fa9e406ahrens#include <sys/zio_compress.h>
59e0d35c4marks#include <sys/zfs_fuid.h>
6088b7b0fMatthew Ahrens#include <sys/arc.h>
61b24ab67Jeff Bonwick#include <sys/ddt.h>
62ad135b5Christopher Siden#include <sys/zfeature.h>
63770499eDan Kimmel#include <sys/abd.h>
644445fffMatthew Ahrens#include <zfs_comutil.h>
65de6628fck#undef verify
66de6628fck#include <libzfs.h>
67fa9e406ahrens
68e690fb2Christopher Siden#define	ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?	\
69e690fb2Christopher Siden	zio_compress_table[(idx)].ci_name : "UNKNOWN")
70e690fb2Christopher Siden#define	ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?	\
71e690fb2Christopher Siden	zio_checksum_table[(idx)].ci_name : "UNKNOWN")
72e690fb2Christopher Siden#define	ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?	\
73e690fb2Christopher Siden	dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?	\
74e690fb2Christopher Siden	dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
75e690fb2Christopher Siden#define	ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :		\
76e690fb2Christopher Siden	(((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ?	\
77e690fb2Christopher Siden	DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
786de8f41Victor Latushkin
79feef89cVictor Latushkin#ifndef lint
804dd77f9Matthew Ahrensextern int reference_tracking_enable;
817fd05acMatthew Ahrensextern boolean_t zfs_recover;
8206be980Matthew Ahrensextern uint64_t zfs_arc_max, zfs_arc_meta_limit;
83f7950bfMatthew Ahrensextern int zfs_vdev_async_read_max_active;
84feef89cVictor Latushkin#else
854dd77f9Matthew Ahrensint reference_tracking_enable;
867fd05acMatthew Ahrensboolean_t zfs_recover;
8706be980Matthew Ahrensuint64_t zfs_arc_max, zfs_arc_meta_limit;
88f7950bfMatthew Ahrensint zfs_vdev_async_read_max_active;
89feef89cVictor Latushkin#endif
90feef89cVictor Latushkin
91fa9e406ahrensconst char cmdname[] = "zdb";
92fa9e406ahrensuint8_t dump_opt[256];
93fa9e406ahrens
94fa9e406ahrenstypedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
95fa9e406ahrens
96fa9e406ahrensextern void dump_intent_log(zilog_t *);
97fa9e406ahrensuint64_t *zopt_object = NULL;
98fa9e406ahrensint zopt_objects = 0;
99de6628fcklibzfs_handle_t *g_zfs;
10006be980Matthew Ahrensuint64_t max_inflight = 1000;
101fa9e406ahrens
102732885fMatthew Ahrensstatic void snprintf_blkptr_compact(char *, size_t, const blkptr_t *);
103732885fMatthew Ahrens
104fa9e406ahrens/*
105fa9e406ahrens * These libumem hooks provide a reasonable set of defaults for the allocator's
106fa9e406ahrens * debugging facilities.
107fa9e406ahrens */
108fa9e406ahrensconst char *
109fa9e406ahrens_umem_debug_init()
110fa9e406ahrens{
111fa9e406ahrens	return ("default,verbose"); /* $UMEM_DEBUG setting */
112fa9e406ahrens}
113fa9e406ahrens
114fa9e406ahrensconst char *
115fa9e406ahrens_umem_logging_init(void)
116fa9e406ahrens{
117fa9e406ahrens	return ("fail,contents"); /* $UMEM_LOGGING setting */
118fa9e406ahrens}
119fa9e406ahrens
120fa9e406ahrensstatic void
121fa9e406ahrensusage(void)
122fa9e406ahrens{
123fa9e406ahrens	(void) fprintf(stderr,
124dfd5965Richard Yao	    "Usage:\t%s [-AbcdDFGhiLMPsvX] [-e [-V] [-p <path> ...]] "
125ed61ec1Yuri Pankov	    "[-I <inflight I/Os>]\n"
126ed61ec1Yuri Pankov	    "\t\t[-o <var>=<value>]... [-t <txg>] [-U <cache>] [-x <dumpdir>]\n"
127ed61ec1Yuri Pankov	    "\t\t[<poolname> [<object> ...]]\n"
128dfd5965Richard Yao	    "\t%s [-AdiPv] [-e [-V] [-p <path> ...]] [-U <cache>] <dataset> "
129ed61ec1Yuri Pankov	    "[<object> ...]\n"
130ed61ec1Yuri Pankov	    "\t%s -C [-A] [-U <cache>]\n"
131ed61ec1Yuri Pankov	    "\t%s -l [-Aqu] <device>\n"
132dfd5965Richard Yao	    "\t%s -m [-AFLPX] [-e [-V] [-p <path> ...]] [-t <txg>] "
133dfd5965Richard Yao	    "[-U <cache>]\n\t\t<poolname> [<vdev> [<metaslab> ...]]\n"
134ed61ec1Yuri Pankov	    "\t%s -O <dataset> <path>\n"
135dfd5965Richard Yao	    "\t%s -R [-A] [-e [-V] [-p <path> ...]] [-U <cache>]\n"
136ed61ec1Yuri Pankov	    "\t\t<poolname> <vdev>:<offset>:<size>[:<flags>]\n"
137dfd5965Richard Yao	    "\t%s -S [-AP] [-e [-V] [-p <path> ...]] [-U <cache>] "
138dfd5965Richard Yao	    "<poolname>\n\n",
139ed61ec1Yuri Pankov	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname,
140ed61ec1Yuri Pankov	    cmdname);
1413ad6c7fVictor Latushkin
1423ad6c7fVictor Latushkin	(void) fprintf(stderr, "    Dataset name must include at least one "
1433ad6c7fVictor Latushkin	    "separator character '/' or '@'\n");
1443ad6c7fVictor Latushkin	(void) fprintf(stderr, "    If dataset name is specified, only that "
1453ad6c7fVictor Latushkin	    "dataset is dumped\n");
1463ad6c7fVictor Latushkin	(void) fprintf(stderr, "    If object numbers are specified, only "
1473ad6c7fVictor Latushkin	    "those objects are dumped\n\n");
1483ad6c7fVictor Latushkin	(void) fprintf(stderr, "    Options to control amount of output:\n");
1493ad6c7fVictor Latushkin	(void) fprintf(stderr, "        -b block statistics\n");
1503ad6c7fVictor Latushkin	(void) fprintf(stderr, "        -c checksum all metadata (twice for "
1516365109Victor Latushkin	    "all data) blocks\n");
152ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
153ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -d dataset(s)\n");
154f0ba89bJeff Bonwick	(void) fprintf(stderr, "        -D dedup statistics\n");
155ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -h pool history\n");
156ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -i intent logs\n");
15764723e3Yuri Pankov	(void) fprintf(stderr, "        -l read label contents\n");
15882a0a98Victor Latushkin	(void) fprintf(stderr, "        -L disable leak tracking (do not "
15982a0a98Victor Latushkin	    "load spacemaps)\n");
160ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -m metaslabs\n");
161ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -M metaslab groups\n");
162ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -O perform object lookups by path\n");
163d41e764ek	(void) fprintf(stderr, "        -R read and display block from a "
164ed61ec1Yuri Pankov	    "device\n");
165ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
166ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
167ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -v verbose (applies to all "
168ed61ec1Yuri Pankov	    "others)\n\n");
1693ad6c7fVictor Latushkin	(void) fprintf(stderr, "    Below options are intended for use "
170df15e41Matthew Ahrens	    "with other options:\n");
171feef89cVictor Latushkin	(void) fprintf(stderr, "        -A ignore assertions (-A), enable "
172feef89cVictor Latushkin	    "panic recovery (-AA) or both (-AAA)\n");
1733ad6c7fVictor Latushkin	(void) fprintf(stderr, "        -e pool is exported/destroyed/"
1743ad6c7fVictor Latushkin	    "has altroot/not in a cachefile\n");
175ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -F attempt automatic rewind within "
176ed61ec1Yuri Pankov	    "safe range of transaction groups\n");
177ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -G dump zfs_dbgmsg buffer before "
178ed61ec1Yuri Pankov	    "exiting\n");
1792e4c998George Wilson	(void) fprintf(stderr, "        -I <number of inflight I/Os> -- "
180df15e41Matthew Ahrens	    "specify the maximum number of "
181df15e41Matthew Ahrens	    "checksumming I/Os [default is 200]\n");
1820e60744Pavel Zakharov	(void) fprintf(stderr, "        -o <variable>=<value> set global "
1830e60744Pavel Zakharov	    "variable to an unsigned 32-bit integer value\n");
184ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -p <path> -- use one or more with "
185ed61ec1Yuri Pankov	    "-e to specify path to vdev dir\n");
186ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -P print numbers in parseable form\n");
18764723e3Yuri Pankov	(void) fprintf(stderr, "        -q don't print label contents\n");
188ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
189ed61ec1Yuri Pankov	    "searching for uberblocks\n");
19064723e3Yuri Pankov	(void) fprintf(stderr, "        -u uberblock\n");
191ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
192ed61ec1Yuri Pankov	    "cachefile\n");
193dfd5965Richard Yao	(void) fprintf(stderr, "        -V do verbatim import\n");
194ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -x <dumpdir> -- "
195ed61ec1Yuri Pankov	    "dump all read blocks into specified directory\n");
196ed61ec1Yuri Pankov	(void) fprintf(stderr, "        -X attempt extreme rewind (does not "
197ed61ec1Yuri Pankov	    "work with dataset)\n\n");
198fa9e406ahrens	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
199fa9e406ahrens	    "to make only that option verbose\n");
200fa9e406ahrens	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
201fa9e406ahrens	exit(1);
202fa9e406ahrens}
203fa9e406ahrens
20429bdd2fPavel Zakharovstatic void
20529bdd2fPavel Zakharovdump_debug_buffer()
20629bdd2fPavel Zakharov{
20729bdd2fPavel Zakharov	if (dump_opt['G']) {
20829bdd2fPavel Zakharov		(void) printf("\n");
20929bdd2fPavel Zakharov		zfs_dbgmsg_print("zdb");
21029bdd2fPavel Zakharov	}
21129bdd2fPavel Zakharov}
21229bdd2fPavel Zakharov
213ccba080Rich Morris/*
214ccba080Rich Morris * Called for usage errors that are discovered after a call to spa_open(),
215ccba080Rich Morris * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
216ccba080Rich Morris */
217ccba080Rich Morris
218fa9e406ahrensstatic void
219fa9e406ahrensfatal(const char *fmt, ...)
220fa9e406ahrens{
221fa9e406ahrens	va_list ap;
222fa9e406ahrens
223fa9e406ahrens	va_start(ap, fmt);
224fa9e406ahrens	(void) fprintf(stderr, "%s: ", cmdname);
225fa9e406ahrens	(void) vfprintf(stderr, fmt, ap);
226fa9e406ahrens	va_end(ap);
227fa9e406ahrens	(void) fprintf(stderr, "\n");
228fa9e406ahrens
22929bdd2fPavel Zakharov	dump_debug_buffer();
23029bdd2fPavel Zakharov
231ccba080Rich Morris	exit(1);
232fa9e406ahrens}
233fa9e406ahrens
234fa9e406ahrens/* ARGSUSED */
235fa9e406ahrensstatic void
236fa9e406ahrensdump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
237fa9e406ahrens{
238fa9e406ahrens	nvlist_t *nv;
239fa9e406ahrens	size_t nvsize = *(uint64_t *)data;
240fa9e406ahrens	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
241fa9e406ahrens
2427bfdf01Neil Perrin	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
243fa9e406ahrens
244fa9e406ahrens	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
245fa9e406ahrens
246fa9e406ahrens	umem_free(packed, nvsize);
247fa9e406ahrens
248fa9e406ahrens	dump_nvlist(nv, 8);
249fa9e406ahrens
250fa9e406ahrens	nvlist_free(nv);
251fa9e406ahrens}
252fa9e406ahrens
2534445fffMatthew Ahrens/* ARGSUSED */
2544445fffMatthew Ahrensstatic void
2554445fffMatthew Ahrensdump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
2564445fffMatthew Ahrens{
2574445fffMatthew Ahrens	spa_history_phys_t *shp = data;
2584445fffMatthew Ahrens
2594445fffMatthew Ahrens	if (shp == NULL)
2604445fffMatthew Ahrens		return;
2614445fffMatthew Ahrens
2624445fffMatthew Ahrens	(void) printf("\t\tpool_create_len = %llu\n",
2634445fffMatthew Ahrens	    (u_longlong_t)shp->sh_pool_create_len);
2644445fffMatthew Ahrens	(void) printf("\t\tphys_max_off = %llu\n",
2654445fffMatthew Ahrens	    (u_longlong_t)shp->sh_phys_max_off);
2664445fffMatthew Ahrens	(void) printf("\t\tbof = %llu\n",
2674445fffMatthew Ahrens	    (u_longlong_t)shp->sh_bof);
2684445fffMatthew Ahrens	(void) printf("\t\teof = %llu\n",
2694445fffMatthew Ahrens	    (u_longlong_t)shp->sh_eof);
2704445fffMatthew Ahrens	(void) printf("\t\trecords_lost = %llu\n",
2714445fffMatthew Ahrens	    (u_longlong_t)shp->sh_records_lost);
2724445fffMatthew Ahrens}
2734445fffMatthew Ahrens
2743f9d6adLin Lingstatic void
2753f9d6adLin Lingzdb_nicenum(uint64_t num, char *buf)
2763f9d6adLin Ling{
2773f9d6adLin Ling	if (dump_opt['P'])
2783f9d6adLin Ling		(void) sprintf(buf, "%llu", (longlong_t)num);
2793f9d6adLin Ling	else
2803f9d6adLin Ling		nicenum(num, buf);
2813f9d6adLin Ling}
2823f9d6adLin Ling
283490d05bMatthew Ahrensconst char histo_stars[] = "****************************************";
284490d05bMatthew Ahrensconst int histo_width = sizeof (histo_stars) - 1;
285fa9e406ahrens
286fa9e406ahrensstatic void
2870713e23George Wilsondump_histogram(const uint64_t *histo, int size, int offset)
288fa9e406ahrens{
289fa9e406ahrens	int i;
290490d05bMatthew Ahrens	int minidx = size - 1;
291fa9e406ahrens	int maxidx = 0;
292fa9e406ahrens	uint64_t max = 0;
293fa9e406ahrens
294490d05bMatthew Ahrens	for (i = 0; i < size; i++) {
295fa9e406ahrens		if (histo[i] > max)
296fa9e406ahrens			max = histo[i];
297fa9e406ahrens		if (histo[i] > 0 && i > maxidx)
298fa9e406ahrens			maxidx = i;
299fa9e406ahrens		if (histo[i] > 0 && i < minidx)
300fa9e406ahrens			minidx = i;
301fa9e406ahrens	}
302fa9e406ahrens
303490d05bMatthew Ahrens	if (max < histo_width)
304490d05bMatthew Ahrens		max = histo_width;
305fa9e406ahrens
306490d05bMatthew Ahrens	for (i = minidx; i <= maxidx; i++) {
307490d05bMatthew Ahrens		(void) printf("\t\t\t%3u: %6llu %s\n",
3080713e23George Wilson		    i + offset, (u_longlong_t)histo[i],
309490d05bMatthew Ahrens		    &histo_stars[(max - histo[i]) * histo_width / max]);
310490d05bMatthew Ahrens	}
311fa9e406ahrens}
312fa9e406ahrens
313fa9e406ahrensstatic void
314fa9e406ahrensdump_zap_stats(objset_t *os, uint64_t object)
315fa9e406ahrens{
316fa9e406ahrens	int error;
317fa9e406ahrens	zap_stats_t zs;
318fa9e406ahrens
319fa9e406ahrens	error = zap_get_stats(os, object, &zs);
320fa9e406ahrens	if (error)
321fa9e406ahrens		return;
322fa9e406ahrens
323fa9e406ahrens	if (zs.zs_ptrtbl_len == 0) {
324fa9e406ahrens		ASSERT(zs.zs_num_blocks == 1);
325fa9e406ahrens		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
326fa9e406ahrens		    (u_longlong_t)zs.zs_blocksize,
327fa9e406ahrens		    (u_longlong_t)zs.zs_num_entries);
328fa9e406ahrens		return;
329fa9e406ahrens	}
330fa9e406ahrens
331fa9e406ahrens	(void) printf("\tFat ZAP stats:\n");
3328248818nd
3338248818nd	(void) printf("\t\tPointer table:\n");
3348248818nd	(void) printf("\t\t\t%llu elements\n",
335fa9e406ahrens	    (u_longlong_t)zs.zs_ptrtbl_len);
3368248818nd	(void) printf("\t\t\tzt_blk: %llu\n",
3378248818nd	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
3388248818nd	(void) printf("\t\t\tzt_numblks: %llu\n",
3398248818nd	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
3408248818nd	(void) printf("\t\t\tzt_shift: %llu\n",
3418248818nd	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
3428248818nd	(void) printf("\t\t\tzt_blks_copied: %llu\n",
3438248818nd	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
3448248818nd	(void) printf("\t\t\tzt_nextblk: %llu\n",
3458248818nd	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
3468248818nd
347fa9e406ahrens	(void) printf("\t\tZAP entries: %llu\n",
348fa9e406ahrens	    (u_longlong_t)zs.zs_num_entries);
349fa9e406ahrens	(void) printf("\t\tLeaf blocks: %llu\n",
350fa9e406ahrens	    (u_longlong_t)zs.zs_num_leafs);
351fa9e406ahrens	(void) printf("\t\tTotal blocks: %llu\n",
352fa9e406ahrens	    (u_longlong_t)zs.zs_num_blocks);
3538248818nd	(void) printf("\t\tzap_block_type: 0x%llx\n",
3548248818nd	    (u_longlong_t)zs.zs_block_type);
3558248818nd	(void) printf("\t\tzap_magic: 0x%llx\n",
3568248818nd	    (u_longlong_t)zs.zs_magic);
3578248818nd	(void) printf("\t\tzap_salt: 0x%llx\n",
3588248818nd	    (u_longlong_t)zs.zs_salt);
359fa9e406ahrens
360fa9e406ahrens	(void) printf("\t\tLeafs with 2^n pointers:\n");
3610713e23George Wilson	dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
362fa9e406ahrens
363fa9e406ahrens	(void) printf("\t\tBlocks with n*5 entries:\n");
3640713e23George Wilson	dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
365fa9e406ahrens
366fa9e406ahrens	(void) printf("\t\tBlocks n/10 full:\n");
3670713e23George Wilson	dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
368fa9e406ahrens
369fa9e406ahrens	(void) printf("\t\tEntries with n chunks:\n");
3700713e23George Wilson	dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
371fa9e406ahrens
372fa9e406ahrens	(void) printf("\t\tBuckets with n entries:\n");
3730713e23George Wilson	dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
374fa9e406ahrens}
375fa9e406ahrens
376fa9e406ahrens/*ARGSUSED*/
377fa9e406ahrensstatic void
378fa9e406ahrensdump_none(objset_t *os, uint64_t object, void *data, size_t size)
379fa9e406ahrens{
380fa9e406ahrens}
381fa9e406ahrens
382fa9e406ahrens/*ARGSUSED*/
3836de8f41Victor Latushkinstatic void
3846de8f41Victor Latushkindump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
3856de8f41Victor Latushkin{
3866de8f41Victor Latushkin	(void) printf("\tUNKNOWN OBJECT TYPE\n");
3876de8f41Victor Latushkin}
3886de8f41Victor Latushkin
3896de8f41Victor Latushkin/*ARGSUSED*/
390fa9e406ahrensvoid
391fa9e406ahrensdump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
392fa9e406ahrens{
393fa9e406ahrens}
394fa9e406ahrens
395fa9e406ahrens/*ARGSUSED*/
396fa9e406ahrensstatic void
397fa9e406ahrensdump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
398fa9e406ahrens{
399fa9e406ahrens}
400fa9e406ahrens
401fa9e406ahrens/*ARGSUSED*/
402fa9e406ahrensstatic void
403fa9e406ahrensdump_zap(objset_t *os, uint64_t object, void *data, size_t size)
404fa9e406ahrens{
405fa9e406ahrens	zap_cursor_t zc;
406fa9e406ahrens	zap_attribute_t attr;
407fa9e406ahrens	void *prop;
408fa9e406ahrens	int i;
409fa9e406ahrens
410fa9e406ahrens	dump_zap_stats(os, object);
411fa9e406ahrens	(void) printf("\n");
412fa9e406ahrens
413fa9e406ahrens	for (zap_cursor_init(&zc, os, object);
414fa9e406ahrens	    zap_cursor_retrieve(&zc, &attr) == 0;
415fa9e406ahrens	    zap_cursor_advance(&zc)) {
416fa9e406ahrens		(void) printf("\t\t%s = ", attr.za_name);
417fa9e406ahrens		if (attr.za_num_integers == 0) {
418fa9e406ahrens			(void) printf("\n");
419fa9e406ahrens			continue;
420fa9e406ahrens		}
421fa9e406ahrens		prop = umem_zalloc(attr.za_num_integers *
422fa9e406ahrens		    attr.za_integer_length, UMEM_NOFAIL);
423fa9e406ahrens		(void) zap_lookup(os, object, attr.za_name,
424fa9e406ahrens		    attr.za_integer_length, attr.za_num_integers, prop);
425fa9e406ahrens		if (attr.za_integer_length == 1) {
426fa9e406ahrens			(void) printf("%s", (char *)prop);
427fa9e406ahrens		} else {
428fa9e406ahrens			for (i = 0; i < attr.za_num_integers; i++) {
429fa9e406ahrens				switch (attr.za_integer_length) {
430fa9e406ahrens				case 2:
431fa9e406ahrens					(void) printf("%u ",
432fa9e406ahrens					    ((uint16_t *)prop)[i]);
433fa9e406ahrens					break;
434fa9e406ahrens				case 4:
435fa9e406ahrens					(void) printf("%u ",
436fa9e406ahrens					    ((uint32_t *)prop)[i]);
437fa9e406ahrens					break;
438fa9e406ahrens				case 8:
439fa9e406ahrens					(void) printf("%lld ",
440fa9e406ahrens					    (u_longlong_t)((int64_t *)prop)[i]);
441fa9e406ahrens					break;
442fa9e406ahrens				}
443fa9e406ahrens			}
444fa9e406ahrens		}
445fa9e406ahrens		(void) printf("\n");
446fa9e406ahrens		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
447fa9e406ahrens	}
44887e5029ahrens	zap_cursor_fini(&zc);
449fa9e406ahrens}
450fa9e406ahrens
451732885fMatthew Ahrensstatic void
452732885fMatthew Ahrensdump_bpobj(objset_t *os, uint64_t object, void *data, size_t size)
453732885fMatthew Ahrens{
454732885fMatthew Ahrens	bpobj_phys_t *bpop = data;
455732885fMatthew Ahrens	char bytes[32], comp[32], uncomp[32];
456732885fMatthew Ahrens
457732885fMatthew Ahrens	if (bpop == NULL)
458732885fMatthew Ahrens		return;
459732885fMatthew Ahrens
460732885fMatthew Ahrens	zdb_nicenum(bpop->bpo_bytes, bytes);
461732885fMatthew Ahrens	zdb_nicenum(bpop->bpo_comp, comp);
462732885fMatthew Ahrens	zdb_nicenum(bpop->bpo_uncomp, uncomp);
463732885fMatthew Ahrens
464732885fMatthew Ahrens	(void) printf("\t\tnum_blkptrs = %llu\n",
465732885fMatthew Ahrens	    (u_longlong_t)bpop->bpo_num_blkptrs);
466732885fMatthew Ahrens	(void) printf("\t\tbytes = %s\n", bytes);
467732885fMatthew Ahrens	if (size >= BPOBJ_SIZE_V1) {
468732885fMatthew Ahrens		(void) printf("\t\tcomp = %s\n", comp);
469732885fMatthew Ahrens		(void) printf("\t\tuncomp = %s\n", uncomp);
470732885fMatthew Ahrens	}
471732885fMatthew Ahrens	if (size >= sizeof (*bpop)) {
472732885fMatthew Ahrens		(void) printf("\t\tsubobjs = %llu\n",
473732885fMatthew Ahrens		    (u_longlong_t)bpop->bpo_subobjs);
474732885fMatthew Ahrens		(void) printf("\t\tnum_subobjs = %llu\n",
475732885fMatthew Ahrens		    (u_longlong_t)bpop->bpo_num_subobjs);
476732885fMatthew Ahrens	}
477732885fMatthew Ahrens
478732885fMatthew Ahrens	if (dump_opt['d'] < 5)
479732885fMatthew Ahrens		return;
480732885fMatthew Ahrens
481732885fMatthew Ahrens	for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) {
482732885fMatthew Ahrens		char blkbuf[BP_SPRINTF_LEN];
483732885fMatthew Ahrens		blkptr_t bp;
484732885fMatthew Ahrens
485732885fMatthew Ahrens		int err = dmu_read(os, object,
486732885fMatthew Ahrens		    i * sizeof (bp), sizeof (bp), &bp, 0);
487732885fMatthew Ahrens		if (err != 0) {
488732885fMatthew Ahrens			(void) printf("got error %u from dmu_read\n", err);
489732885fMatthew Ahrens			break;
490732885fMatthew Ahrens		}
491732885fMatthew Ahrens		snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp);
492732885fMatthew Ahrens		(void) printf("\t%s\n", blkbuf);
493732885fMatthew Ahrens	}
494732885fMatthew Ahrens}
495732885fMatthew Ahrens
496732885fMatthew Ahrens/* ARGSUSED */
497732885fMatthew Ahrensstatic void
498732885fMatthew Ahrensdump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size)
499732885fMatthew Ahrens{
500732885fMatthew Ahrens	dmu_object_info_t doi;
501732885fMatthew Ahrens
502732885fMatthew Ahrens	VERIFY0(dmu_object_info(os, object, &doi));
503732885fMatthew Ahrens	uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP);
504732885fMatthew Ahrens
505732885fMatthew Ahrens	int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0);
506732885fMatthew Ahrens	if (err != 0) {
507732885fMatthew Ahrens		(void) printf("got error %u from dmu_read\n", err);
508732885fMatthew Ahrens		kmem_free(subobjs, doi.doi_max_offset);
509732885fMatthew Ahrens		return;
510732885fMatthew Ahrens	}
511732885fMatthew Ahrens
512732885fMatthew Ahrens	int64_t last_nonzero = -1;
513732885fMatthew Ahrens	for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) {
514732885fMatthew Ahrens		if (subobjs[i] != 0)
515732885fMatthew Ahrens			last_nonzero = i;
516732885fMatthew Ahrens	}
517732885fMatthew Ahrens
518732885fMatthew Ahrens	for (int64_t i = 0; i <= last_nonzero; i++) {
519732885fMatthew Ahrens		(void) printf("\t%llu\n", (longlong_t)subobjs[i]);
520732885fMatthew Ahrens	}
521732885fMatthew Ahrens	kmem_free(subobjs, doi.doi_max_offset);
522732885fMatthew Ahrens}
523732885fMatthew Ahrens
524e743726ahrens/*ARGSUSED*/
525e743726ahrensstatic void
526486ae71Matthew Ahrensdump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
527486ae71Matthew Ahrens{
528486ae71Matthew Ahrens	dump_zap_stats(os, object);
529486ae71Matthew Ahrens	/* contents are printed elsewhere, properly decoded */
530486ae71Matthew Ahrens}
531486ae71Matthew Ahrens
532486ae71Matthew Ahrens/*ARGSUSED*/
533486ae71Matthew Ahrensstatic void
5340a586ceMark Shellenbaumdump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
5350a586ceMark Shellenbaum{
5360a586ceMark Shellenbaum	zap_cursor_t zc;
5370a586ceMark Shellenbaum	zap_attribute_t attr;
5380a586ceMark Shellenbaum
5390a586ceMark Shellenbaum	dump_zap_stats(os, object);
5400a586ceMark Shellenbaum	(void) printf("\n");
5410a586ceMark Shellenbaum
5420a586ceMark Shellenbaum	for (zap_cursor_init(&zc, os, object);
5430a586ceMark Shellenbaum	    zap_cursor_retrieve(&zc, &attr) == 0;
5440a586ceMark Shellenbaum	    zap_cursor_advance(&zc)) {
5450a586ceMark Shellenbaum		(void) printf("\t\t%s = ", attr.za_name);
5460a586ceMark Shellenbaum		if (attr.za_num_integers == 0) {
5470a586ceMark Shellenbaum			(void) printf("\n");
5480a586ceMark Shellenbaum			continue;
5490a586ceMark Shellenbaum		}
5500a586ceMark Shellenbaum		(void) printf(" %llx : [%d:%d:%d]\n",
5510a586ceMark Shellenbaum		    (u_longlong_t)attr.za_first_integer,
5520a586ceMark Shellenbaum		    (int)ATTR_LENGTH(attr.za_first_integer),
5530a586ceMark Shellenbaum		    (int)ATTR_BSWAP(attr.za_first_integer),
5540a586ceMark Shellenbaum		    (int)ATTR_NUM(attr.za_first_integer));
5550a586ceMark Shellenbaum	}
5560a586ceMark Shellenbaum	zap_cursor_fini(&zc);
5570a586ceMark Shellenbaum}
5580a586ceMark Shellenbaum
5590a586ceMark Shellenbaum/*ARGSUSED*/
5600a586ceMark Shellenbaumstatic void
5610a586ceMark Shellenbaumdump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
5620a586ceMark Shellenbaum{
5630a586ceMark Shellenbaum	zap_cursor_t zc;
5640a586ceMark Shellenbaum	zap_attribute_t attr;
5650a586ceMark Shellenbaum	uint16_t *layout_attrs;
5660a586ceMark Shellenbaum	int i;
5670a586ceMark Shellenbaum
5680a586ceMark Shellenbaum	dump_zap_stats(os, object);
5690a586ceMark Shellenbaum	(void) printf("\n");
5700a586ceMark Shellenbaum
5710a586ceMark Shellenbaum	for (zap_cursor_init(&zc, os, object);
5720a586ceMark Shellenbaum	    zap_cursor_retrieve(&zc, &attr) == 0;
5730a586ceMark Shellenbaum	    zap_cursor_advance(&zc)) {
5740a586ceMark Shellenbaum		(void) printf("\t\t%s = [", attr.za_name);
5750a586ceMark Shellenbaum		if (attr.za_num_integers == 0) {
5760a586ceMark Shellenbaum			(void) printf("\n");
5770a586ceMark Shellenbaum			continue;
5780a586ceMark Shellenbaum		}
5790a586ceMark Shellenbaum
5800a586ceMark Shellenbaum		VERIFY(attr.za_integer_length == 2);
5810a586ceMark Shellenbaum		layout_attrs = umem_zalloc(attr.za_num_integers *
5820a586ceMark Shellenbaum		    attr.za_integer_length, UMEM_NOFAIL);
5830a586ceMark Shellenbaum
5840a586ceMark Shellenbaum		VERIFY(zap_lookup(os, object, attr.za_name,
5850a586ceMark Shellenbaum		    attr.za_integer_length,
5860a586ceMark Shellenbaum		    attr.za_num_integers, layout_attrs) == 0);
5870a586ceMark Shellenbaum
5880a586ceMark Shellenbaum		for (i = 0; i != attr.za_num_integers; i++)
5890a586ceMark Shellenbaum			(void) printf(" %d ", (int)layout_attrs[i]);
5900a586ceMark Shellenbaum		(void) printf("]\n");
5910a586ceMark Shellenbaum		umem_free(layout_attrs,
5920a586ceMark Shellenbaum		    attr.za_num_integers * attr.za_integer_length);
5930a586ceMark Shellenbaum	}
5940a586ceMark Shellenbaum	zap_cursor_fini(&zc);
5950a586ceMark Shellenbaum}
5960a586ceMark Shellenbaum
5970a586ceMark Shellenbaum/*ARGSUSED*/
5980a586ceMark Shellenbaumstatic void
599e743726ahrensdump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
600e743726ahrens{
601e743726ahrens	zap_cursor_t zc;
602e743726ahrens	zap_attribute_t attr;
603e743726ahrens	const char *typenames[] = {
604e743726ahrens		/* 0 */ "not specified",
605e743726ahrens		/* 1 */ "FIFO",
606e743726ahrens		/* 2 */ "Character Device",
607e743726ahrens		/* 3 */ "3 (invalid)",
608e743726ahrens		/* 4 */ "Directory",
609e743726ahrens		/* 5 */ "5 (invalid)",
610e743726ahrens		/* 6 */ "Block Device",
611e743726ahrens		/* 7 */ "7 (invalid)",
612e743726ahrens		/* 8 */ "Regular File",
613e743726ahrens		/* 9 */ "9 (invalid)",
614e743726ahrens		/* 10 */ "Symbolic Link",
615e743726ahrens		/* 11 */ "11 (invalid)",
616e743726ahrens		/* 12 */ "Socket",
617e743726ahrens		/* 13 */ "Door",
618e743726ahrens		/* 14 */ "Event Port",
619e743726ahrens		/* 15 */ "15 (invalid)",
620e743726ahrens	};
621e743726ahrens
622e743726ahrens	dump_zap_stats(os, object);
623e743726ahrens	(void) printf("\n");
624e743726ahrens
625e743726ahrens	for (zap_cursor_init(&zc, os, object);
626e743726ahrens	    zap_cursor_retrieve(&zc, &attr) == 0;
627e743726ahrens	    zap_cursor_advance(&zc)) {
628e743726ahrens		(void) printf("\t\t%s = %lld (type: %s)\n",
629e743726ahrens		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
630e743726ahrens		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
631e743726ahrens	}
632e743726ahrens	zap_cursor_fini(&zc);
633e743726ahrens}
634e743726ahrens
6350713e23George Wilsonint
6360713e23George Wilsonget_dtl_refcount(vdev_t *vd)
6370713e23George Wilson{
6380713e23George Wilson	int refcount = 0;
6390713e23George Wilson
6400713e23George Wilson	if (vd->vdev_ops->vdev_op_leaf) {
6410713e23George Wilson		space_map_t *sm = vd->vdev_dtl_sm;
6420713e23George Wilson
6430713e23George Wilson		if (sm != NULL &&
6440713e23George Wilson		    sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
6450713e23George Wilson			return (1);
6460713e23George Wilson		return (0);
6470713e23George Wilson	}
6480713e23George Wilson
6490713e23George Wilson	for (int c = 0; c < vd->vdev_children; c++)
6500713e23George Wilson		refcount += get_dtl_refcount(vd->vdev_child[c]);
6510713e23George Wilson	return (refcount);
6520713e23George Wilson}
6530713e23George Wilson
6540713e23George Wilsonint
6550713e23George Wilsonget_metaslab_refcount(vdev_t *vd)
6560713e23George Wilson{
6570713e23George Wilson	int refcount = 0;
6580713e23George Wilson
6592e4c998George Wilson	if (vd->vdev_top == vd && !vd->vdev_removing) {
6600713e23George Wilson		for (int m = 0; m < vd->vdev_ms_count; m++) {
6610713e23George Wilson			space_map_t *sm = vd->vdev_ms[m]->ms_sm;
6620713e23George Wilson
6630713e23George Wilson			if (sm != NULL &&
6640713e23George Wilson			    sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
6650713e23George Wilson				refcount++;
6660713e23George Wilson		}
6670713e23George Wilson	}
6680713e23George Wilson	for (int c = 0; c < vd->vdev_children; c++)
6690713e23George Wilson		refcount += get_metaslab_refcount(vd->vdev_child[c]);
6700713e23George Wilson
6710713e23George Wilson	return (refcount);
6720713e23George Wilson}
6730713e23George Wilson
6740713e23George Wilsonstatic int
6750713e23George Wilsonverify_spacemap_refcounts(spa_t *spa)
6760713e23George Wilson{
6772acef22Matthew Ahrens	uint64_t expected_refcount = 0;
6782acef22Matthew Ahrens	uint64_t actual_refcount;
6790713e23George Wilson
6802acef22Matthew Ahrens	(void) feature_get_refcount(spa,
6812acef22Matthew Ahrens	    &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
6822acef22Matthew Ahrens	    &expected_refcount);
6830713e23George Wilson	actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
6840713e23George Wilson	actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
6850713e23George Wilson
6860713e23George Wilson	if (expected_refcount != actual_refcount) {
6872acef22Matthew Ahrens		(void) printf("space map refcount mismatch: expected %lld != "
6882acef22Matthew Ahrens		    "actual %lld\n",
6892acef22Matthew Ahrens		    (longlong_t)expected_refcount,
6902acef22Matthew Ahrens		    (longlong_t)actual_refcount);
6910713e23George Wilson		return (2);
6920713e23George Wilson	}
6930713e23George Wilson	return (0);
6940713e23George Wilson}
6950713e23George Wilson
696fa9e406ahrensstatic void
6970713e23George Wilsondump_spacemap(objset_t *os, space_map_t *sm)
698fa9e406ahrens{
699fa9e406ahrens	uint64_t alloc, offset, entry;
7008053a26ck	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
7018053a26ck			    "INVALID", "INVALID", "INVALID", "INVALID" };
702fa9e406ahrens
7030713e23George Wilson	if (sm == NULL)
704fa9e406ahrens		return;
705fa9e406ahrens
706fa9e406ahrens	/*
707fa9e406ahrens	 * Print out the freelist entries in both encoded and decoded form.
708fa9e406ahrens	 */
709fa9e406ahrens	alloc = 0;
7100713e23George Wilson	for (offset = 0; offset < space_map_length(sm);
7110713e23George Wilson	    offset += sizeof (entry)) {
7120713e23George Wilson		uint8_t mapshift = sm->sm_shift;
7130713e23George Wilson
7140713e23George Wilson		VERIFY0(dmu_read(os, space_map_object(sm), offset,
7157bfdf01Neil Perrin		    sizeof (entry), &entry, DMU_READ_PREFETCH));
716fa9e406ahrens		if (SM_DEBUG_DECODE(entry)) {
7170713e23George Wilson
71887219dbVictor Latushkin			(void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
719fa9e406ahrens			    (u_longlong_t)(offset / sizeof (entry)),
720fa9e406ahrens			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
7215ad8204nd			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
7225ad8204nd			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
723fa9e406ahrens		} else {
72487219dbVictor Latushkin			(void) printf("\t    [%6llu]    %c  range:"
72587219dbVictor Latushkin			    " %010llx-%010llx  size: %06llx\n",
726fa9e406ahrens			    (u_longlong_t)(offset / sizeof (entry)),
727fa9e406ahrens			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
7285ad8204nd			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
7290713e23George Wilson			    mapshift) + sm->sm_start),
7305ad8204nd			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
7310713e23George Wilson			    mapshift) + sm->sm_start +
7320713e23George Wilson			    (SM_RUN_DECODE(entry) << mapshift)),
7335ad8204nd			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
734fa9e406ahrens			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
735fa9e406ahrens				alloc += SM_RUN_DECODE(entry) << mapshift;
736fa9e406ahrens			else
737fa9e406ahrens				alloc -= SM_RUN_DECODE(entry) << mapshift;
738fa9e406ahrens		}
739fa9e406ahrens	}
7400713e23George Wilson	if (alloc != space_map_allocated(sm)) {
741fa9e406ahrens		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
742fa9e406ahrens		    "with space map summary (%llu)\n",
7430713e23George Wilson		    (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
744fa9e406ahrens	}
745fa9e406ahrens}
746fa9e406ahrens
747fa9e406ahrensstatic void
748d6e555bGeorge Wilsondump_metaslab_stats(metaslab_t *msp)
749d6e555bGeorge Wilson{
7503f9d6adLin Ling	char maxbuf[32];
7510713e23George Wilson	range_tree_t *rt = msp->ms_tree;
7520713e23George Wilson	avl_tree_t *t = &msp->ms_size_tree;
7530713e23George Wilson	int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
754d6e555bGeorge Wilson
7550713e23George Wilson	zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
756d6e555bGeorge Wilson
75787219dbVictor Latushkin	(void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
758d6e555bGeorge Wilson	    "segments", avl_numnodes(t), "maxsize", maxbuf,
759d6e555bGeorge Wilson	    "freepct", free_pct);
7600713e23George Wilson	(void) printf("\tIn-memory histogram:\n");
7610713e23George Wilson	dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
762d6e555bGeorge Wilson}
763d6e555bGeorge Wilson
764d6e555bGeorge Wilsonstatic void
765fa9e406ahrensdump_metaslab(metaslab_t *msp)
766fa9e406ahrens{
767fa9e406ahrens	vdev_t *vd = msp->ms_group->mg_vd;
768fa9e406ahrens	spa_t *spa = vd->vdev_spa;
7690713e23George Wilson	space_map_t *sm = msp->ms_sm;
7703f9d6adLin Ling	char freebuf[32];
771fa9e406ahrens
7720713e23George Wilson	zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
773fa9e406ahrens
774fa9e406ahrens	(void) printf(
77587219dbVictor Latushkin	    "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
7760713e23George Wilson	    (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
7770713e23George Wilson	    (u_longlong_t)space_map_object(sm), freebuf);
778fa9e406ahrens
7790713e23George Wilson	if (dump_opt['m'] > 2 && !dump_opt['L']) {
780d6e555bGeorge Wilson		mutex_enter(&msp->ms_lock);
7810713e23George Wilson		metaslab_load_wait(msp);
7820713e23George Wilson		if (!msp->ms_loaded) {
7830713e23George Wilson			VERIFY0(metaslab_load(msp));
7840713e23George Wilson			range_tree_stat_verify(msp->ms_tree);
7850713e23George Wilson		}
786bc3975bVictor Latushkin		dump_metaslab_stats(msp);
7870713e23George Wilson		metaslab_unload(msp);
788d6e555bGeorge Wilson		mutex_exit(&msp->ms_lock);
789d6e555bGeorge Wilson	}
790d6e555bGeorge Wilson
7910713e23George Wilson	if (dump_opt['m'] > 1 && sm != NULL &&
7922acef22Matthew Ahrens	    spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
7930713e23George Wilson		/*
7940713e23George Wilson		 * The space map histogram represents free space in chunks
7950713e23George Wilson		 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
7960713e23George Wilson		 */
7972e4c998George Wilson		(void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
7982e4c998George Wilson		    (u_longlong_t)msp->ms_fragmentation);
7990713e23George Wilson		dump_histogram(sm->sm_phys->smp_histogram,
8002e4c998George Wilson		    SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
8010713e23George Wilson	}
8020713e23George Wilson
8030713e23George Wilson	if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
8040713e23George Wilson		ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
805d6e555bGeorge Wilson
806d6e555bGeorge Wilson		mutex_enter(&msp->ms_lock);
8070713e23George Wilson		dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
808d6e555bGeorge Wilson		mutex_exit(&msp->ms_lock);
809d6e555bGeorge Wilson	}
81087219dbVictor Latushkin}
811fa9e406ahrens
81287219dbVictor Latushkinstatic void
81387219dbVictor Latushkinprint_vdev_metaslab_header(vdev_t *vd)
81487219dbVictor Latushkin{
81587219dbVictor Latushkin	(void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
81687219dbVictor Latushkin	    (u_longlong_t)vd->vdev_id,
81787219dbVictor Latushkin	    "metaslabs", (u_longlong_t)vd->vdev_ms_count,
81887219dbVictor Latushkin	    "offset", "spacemap", "free");
81987219dbVictor Latushkin	(void) printf("\t%15s   %19s   %15s   %10s\n",
82087219dbVictor Latushkin	    "---------------", "-------------------",
82187219dbVictor Latushkin	    "---------------", "-------------");
822fa9e406ahrens}
823fa9e406ahrens
824fa9e406ahrensstatic void
8252e4c998George Wilsondump_metaslab_groups(spa_t *spa)
8262e4c998George Wilson{
8272e4c998George Wilson	vdev_t *rvd = spa->spa_root_vdev;
8282e4c998George Wilson	metaslab_class_t *mc = spa_normal_class(spa);
8292e4c998George Wilson	uint64_t fragmentation;
8302e4c998George Wilson
8312e4c998George Wilson	metaslab_class_histogram_verify(mc);
8322e4c998George Wilson
8332e4c998George Wilson	for (int c = 0; c < rvd->vdev_children; c++) {
8342e4c998George Wilson		vdev_t *tvd = rvd->vdev_child[c];
8352e4c998George Wilson		metaslab_group_t *mg = tvd->vdev_mg;
8362e4c998George Wilson
8372e4c998George Wilson		if (mg->mg_class != mc)
8382e4c998George Wilson			continue;
8392e4c998George Wilson
8402e4c998George Wilson		metaslab_group_histogram_verify(mg);
8412e4c998George Wilson		mg->mg_fragmentation = metaslab_group_fragmentation(mg);
8422e4c998George Wilson
8432e4c998George Wilson		(void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
8442e4c998George Wilson		    "fragmentation",
8452e4c998George Wilson		    (u_longlong_t)tvd->vdev_id,
8462e4c998George Wilson		    (u_longlong_t)tvd->vdev_ms_count);
8472e4c998George Wilson		if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
8482e4c998George Wilson			(void) printf("%3s\n", "-");
8492e4c998George Wilson		} else {
8502e4c998George Wilson			(void) printf("%3llu%%\n",
8512e4c998George Wilson			    (u_longlong_t)mg->mg_fragmentation);
8522e4c998George Wilson		}
8532e4c998George Wilson		dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
8542e4c998George Wilson	}
8552e4c998George Wilson
8562e4c998George Wilson	(void) printf("\tpool %s\tfragmentation", spa_name(spa));
8572e4c998George Wilson	fragmentation = metaslab_class_fragmentation(mc);
8582e4c998George Wilson	if (fragmentation ==