zdb.c revision 9fa718d2f477620f14e3f2948dd03e3470add804
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/*
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2012 by Delphix. All rights reserved.
25 */
26
27#include <stdio.h>
28#include <stdio_ext.h>
29#include <stdlib.h>
30#include <ctype.h>
31#include <sys/zfs_context.h>
32#include <sys/spa.h>
33#include <sys/spa_impl.h>
34#include <sys/dmu.h>
35#include <sys/zap.h>
36#include <sys/fs/zfs.h>
37#include <sys/zfs_znode.h>
38#include <sys/zfs_sa.h>
39#include <sys/sa.h>
40#include <sys/sa_impl.h>
41#include <sys/vdev.h>
42#include <sys/vdev_impl.h>
43#include <sys/metaslab_impl.h>
44#include <sys/dmu_objset.h>
45#include <sys/dsl_dir.h>
46#include <sys/dsl_dataset.h>
47#include <sys/dsl_pool.h>
48#include <sys/dbuf.h>
49#include <sys/zil.h>
50#include <sys/zil_impl.h>
51#include <sys/stat.h>
52#include <sys/resource.h>
53#include <sys/dmu_traverse.h>
54#include <sys/zio_checksum.h>
55#include <sys/zio_compress.h>
56#include <sys/zfs_fuid.h>
57#include <sys/arc.h>
58#include <sys/ddt.h>
59#include <sys/zfeature.h>
60#include <zfs_comutil.h>
61#undef ZFS_MAXNAMELEN
62#undef verify
63#include <libzfs.h>
64
65#define	ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \
66    zio_compress_table[(idx)].ci_name : "UNKNOWN")
67#define	ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \
68    zio_checksum_table[(idx)].ci_name : "UNKNOWN")
69#define	ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \
70    dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ? \
71    dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
72#define	ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : DMU_OT_NUMTYPES)
73
74#ifndef lint
75extern int zfs_recover;
76#else
77int zfs_recover;
78#endif
79
80const char cmdname[] = "zdb";
81uint8_t dump_opt[256];
82
83typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
84
85extern void dump_intent_log(zilog_t *);
86uint64_t *zopt_object = NULL;
87int zopt_objects = 0;
88libzfs_handle_t *g_zfs;
89
90/*
91 * These libumem hooks provide a reasonable set of defaults for the allocator's
92 * debugging facilities.
93 */
94const char *
95_umem_debug_init()
96{
97	return ("default,verbose"); /* $UMEM_DEBUG setting */
98}
99
100const char *
101_umem_logging_init(void)
102{
103	return ("fail,contents"); /* $UMEM_LOGGING setting */
104}
105
106static void
107usage(void)
108{
109	(void) fprintf(stderr,
110	    "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
111	    "poolname [object...]\n"
112	    "       %s [-divPA] [-e -p path...] dataset [object...]\n"
113	    "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] "
114	    "poolname [vdev [metaslab...]]\n"
115	    "       %s -R [-A] [-e [-p path...]] poolname "
116	    "vdev:offset:size[:flags]\n"
117	    "       %s -S [-PA] [-e [-p path...]] poolname\n"
118	    "       %s -l [-uA] device\n"
119	    "       %s -C [-A] [-U config]\n\n",
120	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
121
122	(void) fprintf(stderr, "    Dataset name must include at least one "
123	    "separator character '/' or '@'\n");
124	(void) fprintf(stderr, "    If dataset name is specified, only that "
125	    "dataset is dumped\n");
126	(void) fprintf(stderr, "    If object numbers are specified, only "
127	    "those objects are dumped\n\n");
128	(void) fprintf(stderr, "    Options to control amount of output:\n");
129	(void) fprintf(stderr, "        -u uberblock\n");
130	(void) fprintf(stderr, "        -d dataset(s)\n");
131	(void) fprintf(stderr, "        -i intent logs\n");
132	(void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
133	(void) fprintf(stderr, "        -h pool history\n");
134	(void) fprintf(stderr, "        -b block statistics\n");
135	(void) fprintf(stderr, "        -m metaslabs\n");
136	(void) fprintf(stderr, "        -c checksum all metadata (twice for "
137	    "all data) blocks\n");
138	(void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
139	(void) fprintf(stderr, "        -D dedup statistics\n");
140	(void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
141	(void) fprintf(stderr, "        -v verbose (applies to all others)\n");
142	(void) fprintf(stderr, "        -l dump label contents\n");
143	(void) fprintf(stderr, "        -L disable leak tracking (do not "
144	    "load spacemaps)\n");
145	(void) fprintf(stderr, "        -R read and display block from a "
146	    "device\n\n");
147	(void) fprintf(stderr, "    Below options are intended for use "
148	    "with other options (except -l):\n");
149	(void) fprintf(stderr, "        -A ignore assertions (-A), enable "
150	    "panic recovery (-AA) or both (-AAA)\n");
151	(void) fprintf(stderr, "        -F attempt automatic rewind within "
152	    "safe range of transaction groups\n");
153	(void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
154	    "cachefile\n");
155	(void) fprintf(stderr, "        -X attempt extreme rewind (does not "
156	    "work with dataset)\n");
157	(void) fprintf(stderr, "        -e pool is exported/destroyed/"
158	    "has altroot/not in a cachefile\n");
159	(void) fprintf(stderr, "        -p <path> -- use one or more with "
160	    "-e to specify path to vdev dir\n");
161	(void) fprintf(stderr, "        -P print numbers in parseable form\n");
162	(void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
163	    "searching for uberblocks\n");
164	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
165	    "to make only that option verbose\n");
166	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
167	exit(1);
168}
169
170/*
171 * Called for usage errors that are discovered after a call to spa_open(),
172 * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
173 */
174
175static void
176fatal(const char *fmt, ...)
177{
178	va_list ap;
179
180	va_start(ap, fmt);
181	(void) fprintf(stderr, "%s: ", cmdname);
182	(void) vfprintf(stderr, fmt, ap);
183	va_end(ap);
184	(void) fprintf(stderr, "\n");
185
186	exit(1);
187}
188
189/* ARGSUSED */
190static void
191dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
192{
193	nvlist_t *nv;
194	size_t nvsize = *(uint64_t *)data;
195	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
196
197	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
198
199	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
200
201	umem_free(packed, nvsize);
202
203	dump_nvlist(nv, 8);
204
205	nvlist_free(nv);
206}
207
208/* ARGSUSED */
209static void
210dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
211{
212	spa_history_phys_t *shp = data;
213
214	if (shp == NULL)
215		return;
216
217	(void) printf("\t\tpool_create_len = %llu\n",
218	    (u_longlong_t)shp->sh_pool_create_len);
219	(void) printf("\t\tphys_max_off = %llu\n",
220	    (u_longlong_t)shp->sh_phys_max_off);
221	(void) printf("\t\tbof = %llu\n",
222	    (u_longlong_t)shp->sh_bof);
223	(void) printf("\t\teof = %llu\n",
224	    (u_longlong_t)shp->sh_eof);
225	(void) printf("\t\trecords_lost = %llu\n",
226	    (u_longlong_t)shp->sh_records_lost);
227}
228
229static void
230zdb_nicenum(uint64_t num, char *buf)
231{
232	if (dump_opt['P'])
233		(void) sprintf(buf, "%llu", (longlong_t)num);
234	else
235		nicenum(num, buf);
236}
237
238const char dump_zap_stars[] = "****************************************";
239const int dump_zap_width = sizeof (dump_zap_stars) - 1;
240
241static void
242dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
243{
244	int i;
245	int minidx = ZAP_HISTOGRAM_SIZE - 1;
246	int maxidx = 0;
247	uint64_t max = 0;
248
249	for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
250		if (histo[i] > max)
251			max = histo[i];
252		if (histo[i] > 0 && i > maxidx)
253			maxidx = i;
254		if (histo[i] > 0 && i < minidx)
255			minidx = i;
256	}
257
258	if (max < dump_zap_width)
259		max = dump_zap_width;
260
261	for (i = minidx; i <= maxidx; i++)
262		(void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
263		    &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
264}
265
266static void
267dump_zap_stats(objset_t *os, uint64_t object)
268{
269	int error;
270	zap_stats_t zs;
271
272	error = zap_get_stats(os, object, &zs);
273	if (error)
274		return;
275
276	if (zs.zs_ptrtbl_len == 0) {
277		ASSERT(zs.zs_num_blocks == 1);
278		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
279		    (u_longlong_t)zs.zs_blocksize,
280		    (u_longlong_t)zs.zs_num_entries);
281		return;
282	}
283
284	(void) printf("\tFat ZAP stats:\n");
285
286	(void) printf("\t\tPointer table:\n");
287	(void) printf("\t\t\t%llu elements\n",
288	    (u_longlong_t)zs.zs_ptrtbl_len);
289	(void) printf("\t\t\tzt_blk: %llu\n",
290	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
291	(void) printf("\t\t\tzt_numblks: %llu\n",
292	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
293	(void) printf("\t\t\tzt_shift: %llu\n",
294	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
295	(void) printf("\t\t\tzt_blks_copied: %llu\n",
296	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
297	(void) printf("\t\t\tzt_nextblk: %llu\n",
298	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
299
300	(void) printf("\t\tZAP entries: %llu\n",
301	    (u_longlong_t)zs.zs_num_entries);
302	(void) printf("\t\tLeaf blocks: %llu\n",
303	    (u_longlong_t)zs.zs_num_leafs);
304	(void) printf("\t\tTotal blocks: %llu\n",
305	    (u_longlong_t)zs.zs_num_blocks);
306	(void) printf("\t\tzap_block_type: 0x%llx\n",
307	    (u_longlong_t)zs.zs_block_type);
308	(void) printf("\t\tzap_magic: 0x%llx\n",
309	    (u_longlong_t)zs.zs_magic);
310	(void) printf("\t\tzap_salt: 0x%llx\n",
311	    (u_longlong_t)zs.zs_salt);
312
313	(void) printf("\t\tLeafs with 2^n pointers:\n");
314	dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
315
316	(void) printf("\t\tBlocks with n*5 entries:\n");
317	dump_zap_histogram(zs.zs_blocks_with_n5_entries);
318
319	(void) printf("\t\tBlocks n/10 full:\n");
320	dump_zap_histogram(zs.zs_blocks_n_tenths_full);
321
322	(void) printf("\t\tEntries with n chunks:\n");
323	dump_zap_histogram(zs.zs_entries_using_n_chunks);
324
325	(void) printf("\t\tBuckets with n entries:\n");
326	dump_zap_histogram(zs.zs_buckets_with_n_entries);
327}
328
329/*ARGSUSED*/
330static void
331dump_none(objset_t *os, uint64_t object, void *data, size_t size)
332{
333}
334
335/*ARGSUSED*/
336static void
337dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
338{
339	(void) printf("\tUNKNOWN OBJECT TYPE\n");
340}
341
342/*ARGSUSED*/
343void
344dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
345{
346}
347
348/*ARGSUSED*/
349static void
350dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
351{
352}
353
354/*ARGSUSED*/
355static void
356dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
357{
358	zap_cursor_t zc;
359	zap_attribute_t attr;
360	void *prop;
361	int i;
362
363	dump_zap_stats(os, object);
364	(void) printf("\n");
365
366	for (zap_cursor_init(&zc, os, object);
367	    zap_cursor_retrieve(&zc, &attr) == 0;
368	    zap_cursor_advance(&zc)) {
369		(void) printf("\t\t%s = ", attr.za_name);
370		if (attr.za_num_integers == 0) {
371			(void) printf("\n");
372			continue;
373		}
374		prop = umem_zalloc(attr.za_num_integers *
375		    attr.za_integer_length, UMEM_NOFAIL);
376		(void) zap_lookup(os, object, attr.za_name,
377		    attr.za_integer_length, attr.za_num_integers, prop);
378		if (attr.za_integer_length == 1) {
379			(void) printf("%s", (char *)prop);
380		} else {
381			for (i = 0; i < attr.za_num_integers; i++) {
382				switch (attr.za_integer_length) {
383				case 2:
384					(void) printf("%u ",
385					    ((uint16_t *)prop)[i]);
386					break;
387				case 4:
388					(void) printf("%u ",
389					    ((uint32_t *)prop)[i]);
390					break;
391				case 8:
392					(void) printf("%lld ",
393					    (u_longlong_t)((int64_t *)prop)[i]);
394					break;
395				}
396			}
397		}
398		(void) printf("\n");
399		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
400	}
401	zap_cursor_fini(&zc);
402}
403
404/*ARGSUSED*/
405static void
406dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
407{
408	dump_zap_stats(os, object);
409	/* contents are printed elsewhere, properly decoded */
410}
411
412/*ARGSUSED*/
413static void
414dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
415{
416	zap_cursor_t zc;
417	zap_attribute_t attr;
418
419	dump_zap_stats(os, object);
420	(void) printf("\n");
421
422	for (zap_cursor_init(&zc, os, object);
423	    zap_cursor_retrieve(&zc, &attr) == 0;
424	    zap_cursor_advance(&zc)) {
425		(void) printf("\t\t%s = ", attr.za_name);
426		if (attr.za_num_integers == 0) {
427			(void) printf("\n");
428			continue;
429		}
430		(void) printf(" %llx : [%d:%d:%d]\n",
431		    (u_longlong_t)attr.za_first_integer,
432		    (int)ATTR_LENGTH(attr.za_first_integer),
433		    (int)ATTR_BSWAP(attr.za_first_integer),
434		    (int)ATTR_NUM(attr.za_first_integer));
435	}
436	zap_cursor_fini(&zc);
437}
438
439/*ARGSUSED*/
440static void
441dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
442{
443	zap_cursor_t zc;
444	zap_attribute_t attr;
445	uint16_t *layout_attrs;
446	int i;
447
448	dump_zap_stats(os, object);
449	(void) printf("\n");
450
451	for (zap_cursor_init(&zc, os, object);
452	    zap_cursor_retrieve(&zc, &attr) == 0;
453	    zap_cursor_advance(&zc)) {
454		(void) printf("\t\t%s = [", attr.za_name);
455		if (attr.za_num_integers == 0) {
456			(void) printf("\n");
457			continue;
458		}
459
460		VERIFY(attr.za_integer_length == 2);
461		layout_attrs = umem_zalloc(attr.za_num_integers *
462		    attr.za_integer_length, UMEM_NOFAIL);
463
464		VERIFY(zap_lookup(os, object, attr.za_name,
465		    attr.za_integer_length,
466		    attr.za_num_integers, layout_attrs) == 0);
467
468		for (i = 0; i != attr.za_num_integers; i++)
469			(void) printf(" %d ", (int)layout_attrs[i]);
470		(void) printf("]\n");
471		umem_free(layout_attrs,
472		    attr.za_num_integers * attr.za_integer_length);
473	}
474	zap_cursor_fini(&zc);
475}
476
477/*ARGSUSED*/
478static void
479dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
480{
481	zap_cursor_t zc;
482	zap_attribute_t attr;
483	const char *typenames[] = {
484		/* 0 */ "not specified",
485		/* 1 */ "FIFO",
486		/* 2 */ "Character Device",
487		/* 3 */ "3 (invalid)",
488		/* 4 */ "Directory",
489		/* 5 */ "5 (invalid)",
490		/* 6 */ "Block Device",
491		/* 7 */ "7 (invalid)",
492		/* 8 */ "Regular File",
493		/* 9 */ "9 (invalid)",
494		/* 10 */ "Symbolic Link",
495		/* 11 */ "11 (invalid)",
496		/* 12 */ "Socket",
497		/* 13 */ "Door",
498		/* 14 */ "Event Port",
499		/* 15 */ "15 (invalid)",
500	};
501
502	dump_zap_stats(os, object);
503	(void) printf("\n");
504
505	for (zap_cursor_init(&zc, os, object);
506	    zap_cursor_retrieve(&zc, &attr) == 0;
507	    zap_cursor_advance(&zc)) {
508		(void) printf("\t\t%s = %lld (type: %s)\n",
509		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
510		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
511	}
512	zap_cursor_fini(&zc);
513}
514
515static void
516dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
517{
518	uint64_t alloc, offset, entry;
519	uint8_t mapshift = sm->sm_shift;
520	uint64_t mapstart = sm->sm_start;
521	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
522			    "INVALID", "INVALID", "INVALID", "INVALID" };
523
524	if (smo->smo_object == 0)
525		return;
526
527	/*
528	 * Print out the freelist entries in both encoded and decoded form.
529	 */
530	alloc = 0;
531	for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
532		VERIFY0(dmu_read(os, smo->smo_object, offset,
533		    sizeof (entry), &entry, DMU_READ_PREFETCH));
534		if (SM_DEBUG_DECODE(entry)) {
535			(void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
536			    (u_longlong_t)(offset / sizeof (entry)),
537			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
538			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
539			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
540		} else {
541			(void) printf("\t    [%6llu]    %c  range:"
542			    " %010llx-%010llx  size: %06llx\n",
543			    (u_longlong_t)(offset / sizeof (entry)),
544			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
545			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
546			    mapshift) + mapstart),
547			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
548			    mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
549			    mapshift)),
550			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
551			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
552				alloc += SM_RUN_DECODE(entry) << mapshift;
553			else
554				alloc -= SM_RUN_DECODE(entry) << mapshift;
555		}
556	}
557	if (alloc != smo->smo_alloc) {
558		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
559		    "with space map summary (%llu)\n",
560		    (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
561	}
562}
563
564static void
565dump_metaslab_stats(metaslab_t *msp)
566{
567	char maxbuf[32];
568	space_map_t *sm = &msp->ms_map;
569	avl_tree_t *t = sm->sm_pp_root;
570	int free_pct = sm->sm_space * 100 / sm->sm_size;
571
572	zdb_nicenum(space_map_maxsize(sm), maxbuf);
573
574	(void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
575	    "segments", avl_numnodes(t), "maxsize", maxbuf,
576	    "freepct", free_pct);
577}
578
579static void
580dump_metaslab(metaslab_t *msp)
581{
582	vdev_t *vd = msp->ms_group->mg_vd;
583	spa_t *spa = vd->vdev_spa;
584	space_map_t *sm = &msp->ms_map;
585	space_map_obj_t *smo = &msp->ms_smo;
586	char freebuf[32];
587
588	zdb_nicenum(sm->sm_size - smo->smo_alloc, freebuf);
589
590	(void) printf(
591	    "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
592	    (u_longlong_t)(sm->sm_start / sm->sm_size),
593	    (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
594
595	if (dump_opt['m'] > 1 && !dump_opt['L']) {
596		mutex_enter(&msp->ms_lock);
597		space_map_load_wait(sm);
598		if (!sm->sm_loaded)
599			VERIFY(space_map_load(sm, zfs_metaslab_ops,
600			    SM_FREE, smo, spa->spa_meta_objset) == 0);
601		dump_metaslab_stats(msp);
602		space_map_unload(sm);
603		mutex_exit(&msp->ms_lock);
604	}
605
606	if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
607		ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
608
609		mutex_enter(&msp->ms_lock);
610		dump_spacemap(spa->spa_meta_objset, smo, sm);
611		mutex_exit(&msp->ms_lock);
612	}
613}
614
615static void
616print_vdev_metaslab_header(vdev_t *vd)
617{
618	(void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
619	    (u_longlong_t)vd->vdev_id,
620	    "metaslabs", (u_longlong_t)vd->vdev_ms_count,
621	    "offset", "spacemap", "free");
622	(void) printf("\t%15s   %19s   %15s   %10s\n",
623	    "---------------", "-------------------",
624	    "---------------", "-------------");
625}
626
627static void
628dump_metaslabs(spa_t *spa)
629{
630	vdev_t *vd, *rvd = spa->spa_root_vdev;
631	uint64_t m, c = 0, children = rvd->vdev_children;
632
633	(void) printf("\nMetaslabs:\n");
634
635	if (!dump_opt['d'] && zopt_objects > 0) {
636		c = zopt_object[0];
637
638		if (c >= children)
639			(void) fatal("bad vdev id: %llu", (u_longlong_t)c);
640
641		if (zopt_objects > 1) {
642			vd = rvd->vdev_child[c];
643			print_vdev_metaslab_header(vd);
644
645			for (m = 1; m < zopt_objects; m++) {
646				if (zopt_object[m] < vd->vdev_ms_count)
647					dump_metaslab(
648					    vd->vdev_ms[zopt_object[m]]);
649				else
650					(void) fprintf(stderr, "bad metaslab "
651					    "number %llu\n",
652					    (u_longlong_t)zopt_object[m]);
653			}
654			(void) printf("\n");
655			return;
656		}
657		children = c + 1;
658	}
659	for (; c < children; c++) {
660		vd = rvd->vdev_child[c];
661		print_vdev_metaslab_header(vd);
662
663		for (m = 0; m < vd->vdev_ms_count; m++)
664			dump_metaslab(vd->vdev_ms[m]);
665		(void) printf("\n");
666	}
667}
668
669static void
670dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
671{
672	const ddt_phys_t *ddp = dde->dde_phys;
673	const ddt_key_t *ddk = &dde->dde_key;
674	char *types[4] = { "ditto", "single", "double", "triple" };
675	char blkbuf[BP_SPRINTF_LEN];
676	blkptr_t blk;
677
678	for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
679		if (ddp->ddp_phys_birth == 0)
680			continue;
681		ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
682		sprintf_blkptr(blkbuf, &blk);
683		(void) printf("index %llx refcnt %llu %s %s\n",
684		    (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
685		    types[p], blkbuf);
686	}
687}
688
689static void
690dump_dedup_ratio(const ddt_stat_t *dds)
691{
692	double rL, rP, rD, D, dedup, compress, copies;
693
694	if (dds->dds_blocks == 0)
695		return;
696
697	rL = (double)dds->dds_ref_lsize;
698	rP = (double)dds->dds_ref_psize;
699	rD = (double)dds->dds_ref_dsize;
700	D = (double)dds->dds_dsize;
701
702	dedup = rD / D;
703	compress = rL / rP;
704	copies = rD / rP;
705
706	(void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
707	    "dedup * compress / copies = %.2f\n\n",
708	    dedup, compress, copies, dedup * compress / copies);
709}
710
711static void
712dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
713{
714	char name[DDT_NAMELEN];
715	ddt_entry_t dde;
716	uint64_t walk = 0;
717	dmu_object_info_t doi;
718	uint64_t count, dspace, mspace;
719	int error;
720
721	error = ddt_object_info(ddt, type, class, &doi);
722
723	if (error == ENOENT)
724		return;
725	ASSERT(error == 0);
726
727	if ((count = ddt_object_count(ddt, type, class)) == 0)
728		return;
729
730	dspace = doi.doi_physical_blocks_512 << 9;
731	mspace = doi.doi_fill_count * doi.doi_data_block_size;
732
733	ddt_object_name(ddt, type, class, name);
734
735	(void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
736	    name,
737	    (u_longlong_t)count,
738	    (u_longlong_t)(dspace / count),
739	    (u_longlong_t)(mspace / count));
740
741	if (dump_opt['D'] < 3)
742		return;
743
744	zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
745
746	if (dump_opt['D'] < 4)
747		return;
748
749	if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
750		return;
751
752	(void) printf("%s contents:\n\n", name);
753
754	while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
755		dump_dde(ddt, &dde, walk);
756
757	ASSERT(error == ENOENT);
758
759	(void) printf("\n");
760}
761
762static void
763dump_all_ddts(spa_t *spa)
764{
765	ddt_histogram_t ddh_total = { 0 };
766	ddt_stat_t dds_total = { 0 };
767
768	for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
769		ddt_t *ddt = spa->spa_ddt[c];
770		for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
771			for (enum ddt_class class = 0; class < DDT_CLASSES;
772			    class++) {
773				dump_ddt(ddt, type, class);
774			}
775		}
776	}
777
778	ddt_get_dedup_stats(spa, &dds_total);
779
780	if (dds_total.dds_blocks == 0) {
781		(void) printf("All DDTs are empty\n");
782		return;
783	}
784
785	(void) printf("\n");
786
787	if (dump_opt['D'] > 1) {
788		(void) printf("DDT histogram (aggregated over all DDTs):\n");
789		ddt_get_dedup_histogram(spa, &ddh_total);
790		zpool_dump_ddt(&dds_total, &ddh_total);
791	}
792
793	dump_dedup_ratio(&dds_total);
794}
795
796static void
797dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
798{
799	char *prefix = (void *)sm;
800
801	(void) printf("%s [%llu,%llu) length %llu\n",
802	    prefix,
803	    (u_longlong_t)start,
804	    (u_longlong_t)(start + size),
805	    (u_longlong_t)(size));
806}
807
808static void
809dump_dtl(vdev_t *vd, int indent)
810{
811	spa_t *spa = vd->vdev_spa;
812	boolean_t required;
813	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
814	char prefix[256];
815
816	spa_vdev_state_enter(spa, SCL_NONE);
817	required = vdev_dtl_required(vd);
818	(void) spa_vdev_state_exit(spa, NULL, 0);
819
820	if (indent == 0)
821		(void) printf("\nDirty time logs:\n\n");
822
823	(void) printf("\t%*s%s [%s]\n", indent, "",
824	    vd->vdev_path ? vd->vdev_path :
825	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
826	    required ? "DTL-required" : "DTL-expendable");
827
828	for (int t = 0; t < DTL_TYPES; t++) {
829		space_map_t *sm = &vd->vdev_dtl[t];
830		if (sm->sm_space == 0)
831			continue;
832		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
833		    indent + 2, "", name[t]);
834		mutex_enter(sm->sm_lock);
835		space_map_walk(sm, dump_dtl_seg, (void *)prefix);
836		mutex_exit(sm->sm_lock);
837		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
838			dump_spacemap(spa->spa_meta_objset,
839			    &vd->vdev_dtl_smo, sm);
840	}
841
842	for (int c = 0; c < vd->vdev_children; c++)
843		dump_dtl(vd->vdev_child[c], indent + 4);
844}
845
846static void
847dump_history(spa_t *spa)
848{
849	nvlist_t **events = NULL;
850	char buf[SPA_MAXBLOCKSIZE];
851	uint64_t resid, len, off = 0;
852	uint_t num = 0;
853	int error;
854	time_t tsec;
855	struct tm t;
856	char tbuf[30];
857	char internalstr[MAXPATHLEN];
858
859	do {
860		len = sizeof (buf);
861
862		if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
863			(void) fprintf(stderr, "Unable to read history: "
864			    "error %d\n", error);
865			return;
866		}
867
868		if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
869			break;
870
871		off -= resid;
872	} while (len != 0);
873
874	(void) printf("\nHistory:\n");
875	for (int i = 0; i < num; i++) {
876		uint64_t time, txg, ievent;
877		char *cmd, *intstr;
878		boolean_t printed = B_FALSE;
879
880		if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
881		    &time) != 0)
882			goto next;
883		if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
884		    &cmd) != 0) {
885			if (nvlist_lookup_uint64(events[i],
886			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
887				goto next;
888			verify(nvlist_lookup_uint64(events[i],
889			    ZPOOL_HIST_TXG, &txg) == 0);
890			verify(nvlist_lookup_string(events[i],
891			    ZPOOL_HIST_INT_STR, &intstr) == 0);
892			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
893				goto next;
894
895			(void) snprintf(internalstr,
896			    sizeof (internalstr),
897			    "[internal %s txg:%lld] %s",
898			    zfs_history_event_names[ievent], txg,
899			    intstr);
900			cmd = internalstr;
901		}
902		tsec = time;
903		(void) localtime_r(&tsec, &t);
904		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
905		(void) printf("%s %s\n", tbuf, cmd);
906		printed = B_TRUE;
907
908next:
909		if (dump_opt['h'] > 1) {
910			if (!printed)
911				(void) printf("unrecognized record:\n");
912			dump_nvlist(events[i], 2);
913		}
914	}
915}
916
917/*ARGSUSED*/
918static void
919dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
920{
921}
922
923static uint64_t
924blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
925{
926	if (dnp == NULL) {
927		ASSERT(zb->zb_level < 0);
928		if (zb->zb_object == 0)
929			return (zb->zb_blkid);
930		return (zb->zb_blkid * BP_GET_LSIZE(bp));
931	}
932
933	ASSERT(zb->zb_level >= 0);
934
935	return ((zb->zb_blkid <<
936	    (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
937	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
938}
939
940static void
941sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
942{
943	const dva_t *dva = bp->blk_dva;
944	int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
945
946	if (dump_opt['b'] >= 5) {
947		sprintf_blkptr(blkbuf, bp);
948		return;
949	}
950
951	blkbuf[0] = '\0';
952
953	for (int i = 0; i < ndvas; i++)
954		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
955		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
956		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
957		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
958
959	(void) sprintf(blkbuf + strlen(blkbuf),
960	    "%llxL/%llxP F=%llu B=%llu/%llu",
961	    (u_longlong_t)BP_GET_LSIZE(bp),
962	    (u_longlong_t)BP_GET_PSIZE(bp),
963	    (u_longlong_t)bp->blk_fill,
964	    (u_longlong_t)bp->blk_birth,
965	    (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
966}
967
968static void
969print_indirect(blkptr_t *bp, const zbookmark_t *zb,
970    const dnode_phys_t *dnp)
971{
972	char blkbuf[BP_SPRINTF_LEN];
973	int l;
974
975	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
976	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
977
978	(void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
979
980	ASSERT(zb->zb_level >= 0);
981
982	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
983		if (l == zb->zb_level) {
984			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
985		} else {
986			(void) printf(" ");
987		}
988	}
989
990	sprintf_blkptr_compact(blkbuf, bp);
991	(void) printf("%s\n", blkbuf);
992}
993
994static int
995visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
996    blkptr_t *bp, const zbookmark_t *zb)
997{
998	int err = 0;
999
1000	if (bp->blk_birth == 0)
1001		return (0);
1002
1003	print_indirect(bp, zb, dnp);
1004
1005	if (BP_GET_LEVEL(bp) > 0) {
1006		uint32_t flags = ARC_WAIT;
1007		int i;
1008		blkptr_t *cbp;
1009		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1010		arc_buf_t *buf;
1011		uint64_t fill = 0;
1012
1013		err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
1014		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1015		if (err)
1016			return (err);
1017		ASSERT(buf->b_data);
1018
1019		/* recursively visit blocks below this */
1020		cbp = buf->b_data;
1021		for (i = 0; i < epb; i++, cbp++) {
1022			zbookmark_t czb;
1023
1024			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1025			    zb->zb_level - 1,
1026			    zb->zb_blkid * epb + i);
1027			err = visit_indirect(spa, dnp, cbp, &czb);
1028			if (err)
1029				break;
1030			fill += cbp->blk_fill;
1031		}
1032		if (!err)
1033			ASSERT3U(fill, ==, bp->blk_fill);
1034		(void) arc_buf_remove_ref(buf, &buf);
1035	}
1036
1037	return (err);
1038}
1039
1040/*ARGSUSED*/
1041static void
1042dump_indirect(dnode_t *dn)
1043{
1044	dnode_phys_t *dnp = dn->dn_phys;
1045	int j;
1046	zbookmark_t czb;
1047
1048	(void) printf("Indirect blocks:\n");
1049
1050	SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1051	    dn->dn_object, dnp->dn_nlevels - 1, 0);
1052	for (j = 0; j < dnp->dn_nblkptr; j++) {
1053		czb.zb_blkid = j;
1054		(void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1055		    &dnp->dn_blkptr[j], &czb);
1056	}
1057
1058	(void) printf("\n");
1059}
1060
1061/*ARGSUSED*/
1062static void
1063dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1064{
1065	dsl_dir_phys_t *dd = data;
1066	time_t crtime;
1067	char nice[32];
1068
1069	if (dd == NULL)
1070		return;
1071
1072	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1073
1074	crtime = dd->dd_creation_time;
1075	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1076	(void) printf("\t\thead_dataset_obj = %llu\n",
1077	    (u_longlong_t)dd->dd_head_dataset_obj);
1078	(void) printf("\t\tparent_dir_obj = %llu\n",
1079	    (u_longlong_t)dd->dd_parent_obj);
1080	(void) printf("\t\torigin_obj = %llu\n",
1081	    (u_longlong_t)dd->dd_origin_obj);
1082	(void) printf("\t\tchild_dir_zapobj = %llu\n",
1083	    (u_longlong_t)dd->dd_child_dir_zapobj);
1084	zdb_nicenum(dd->dd_used_bytes, nice);
1085	(void) printf("\t\tused_bytes = %s\n", nice);
1086	zdb_nicenum(dd->dd_compressed_bytes, nice);
1087	(void) printf("\t\tcompressed_bytes = %s\n", nice);
1088	zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1089	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
1090	zdb_nicenum(dd->dd_quota, nice);
1091	(void) printf("\t\tquota = %s\n", nice);
1092	zdb_nicenum(dd->dd_reserved, nice);
1093	(void) printf("\t\treserved = %s\n", nice);
1094	(void) printf("\t\tprops_zapobj = %llu\n",
1095	    (u_longlong_t)dd->dd_props_zapobj);
1096	(void) printf("\t\tdeleg_zapobj = %llu\n",
1097	    (u_longlong_t)dd->dd_deleg_zapobj);
1098	(void) printf("\t\tflags = %llx\n",
1099	    (u_longlong_t)dd->dd_flags);
1100
1101#define	DO(which) \
1102	zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1103	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1104	DO(HEAD);
1105	DO(SNAP);
1106	DO(CHILD);
1107	DO(CHILD_RSRV);
1108	DO(REFRSRV);
1109#undef DO
1110}
1111
1112/*ARGSUSED*/
1113static void
1114dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1115{
1116	dsl_dataset_phys_t *ds = data;
1117	time_t crtime;
1118	char used[32], compressed[32], uncompressed[32], unique[32];
1119	char blkbuf[BP_SPRINTF_LEN];
1120
1121	if (ds == NULL)
1122		return;
1123
1124	ASSERT(size == sizeof (*ds));
1125	crtime = ds->ds_creation_time;
1126	zdb_nicenum(ds->ds_referenced_bytes, used);
1127	zdb_nicenum(ds->ds_compressed_bytes, compressed);
1128	zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1129	zdb_nicenum(ds->ds_unique_bytes, unique);
1130	sprintf_blkptr(blkbuf, &ds->ds_bp);
1131
1132	(void) printf("\t\tdir_obj = %llu\n",
1133	    (u_longlong_t)ds->ds_dir_obj);
1134	(void) printf("\t\tprev_snap_obj = %llu\n",
1135	    (u_longlong_t)ds->ds_prev_snap_obj);
1136	(void) printf("\t\tprev_snap_txg = %llu\n",
1137	    (u_longlong_t)ds->ds_prev_snap_txg);
1138	(void) printf("\t\tnext_snap_obj = %llu\n",
1139	    (u_longlong_t)ds->ds_next_snap_obj);
1140	(void) printf("\t\tsnapnames_zapobj = %llu\n",
1141	    (u_longlong_t)ds->ds_snapnames_zapobj);
1142	(void) printf("\t\tnum_children = %llu\n",
1143	    (u_longlong_t)ds->ds_num_children);
1144	(void) printf("\t\tuserrefs_obj = %llu\n",
1145	    (u_longlong_t)ds->ds_userrefs_obj);
1146	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1147	(void) printf("\t\tcreation_txg = %llu\n",
1148	    (u_longlong_t)ds->ds_creation_txg);
1149	(void) printf("\t\tdeadlist_obj = %llu\n",
1150	    (u_longlong_t)ds->ds_deadlist_obj);
1151	(void) printf("\t\tused_bytes = %s\n", used);
1152	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
1153	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1154	(void) printf("\t\tunique = %s\n", unique);
1155	(void) printf("\t\tfsid_guid = %llu\n",
1156	    (u_longlong_t)ds->ds_fsid_guid);
1157	(void) printf("\t\tguid = %llu\n",
1158	    (u_longlong_t)ds->ds_guid);
1159	(void) printf("\t\tflags = %llx\n",
1160	    (u_longlong_t)ds->ds_flags);
1161	(void) printf("\t\tnext_clones_obj = %llu\n",
1162	    (u_longlong_t)ds->ds_next_clones_obj);
1163	(void) printf("\t\tprops_obj = %llu\n",
1164	    (u_longlong_t)ds->ds_props_obj);
1165	(void) printf("\t\tbp = %s\n", blkbuf);
1166}
1167
1168/* ARGSUSED */
1169static int
1170dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1171{
1172	char blkbuf[BP_SPRINTF_LEN];
1173
1174	if (bp->blk_birth != 0) {
1175		sprintf_blkptr(blkbuf, bp);
1176		(void) printf("\t%s\n", blkbuf);
1177	}
1178	return (0);
1179}
1180
1181static void
1182dump_bptree(objset_t *os, uint64_t obj, char *name)
1183{
1184	char bytes[32];
1185	bptree_phys_t *bt;
1186	dmu_buf_t *db;
1187
1188	if (dump_opt['d'] < 3)
1189		return;
1190
1191	VERIFY0(dmu_bonus_hold(os, obj, FTAG, &db));
1192	bt = db->db_data;
1193	zdb_nicenum(bt->bt_bytes, bytes);
1194	(void) printf("\n    %s: %llu datasets, %s\n",
1195	    name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1196	dmu_buf_rele(db, FTAG);
1197
1198	if (dump_opt['d'] < 5)
1199		return;
1200
1201	(void) printf("\n");
1202
1203	(void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1204}
1205
1206/* ARGSUSED */
1207static int
1208dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1209{
1210	char blkbuf[BP_SPRINTF_LEN];
1211
1212	ASSERT(bp->blk_birth != 0);
1213	sprintf_blkptr_compact(blkbuf, bp);
1214	(void) printf("\t%s\n", blkbuf);
1215	return (0);
1216}
1217
1218static void
1219dump_bpobj(bpobj_t *bpo, char *name)
1220{
1221	char bytes[32];
1222	char comp[32];
1223	char uncomp[32];
1224
1225	if (dump_opt['d'] < 3)
1226		return;
1227
1228	zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1229	if (bpo->bpo_havesubobj) {
1230		zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1231		zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1232		(void) printf("\n    %s: %llu local blkptrs, %llu subobjs, "
1233		    "%s (%s/%s comp)\n",
1234		    name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1235		    (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1236		    bytes, comp, uncomp);
1237	} else {
1238		(void) printf("\n    %s: %llu blkptrs, %s\n",
1239		    name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, bytes);
1240	}
1241
1242	if (dump_opt['d'] < 5)
1243		return;
1244
1245	(void) printf("\n");
1246
1247	(void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1248}
1249
1250static void
1251dump_deadlist(dsl_deadlist_t *dl)
1252{
1253	dsl_deadlist_entry_t *dle;
1254	char bytes[32];
1255	char comp[32];
1256	char uncomp[32];
1257
1258	if (dump_opt['d'] < 3)
1259		return;
1260
1261	zdb_nicenum(dl->dl_phys->dl_used, bytes);
1262	zdb_nicenum(dl->dl_phys->dl_comp, comp);
1263	zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1264	(void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1265	    bytes, comp, uncomp);
1266
1267	if (dump_opt['d'] < 4)
1268		return;
1269
1270	(void) printf("\n");
1271
1272	for (dle = avl_first(&dl->dl_tree); dle;
1273	    dle = AVL_NEXT(&dl->dl_tree, dle)) {
1274		(void) printf("      mintxg %llu -> obj %llu\n",
1275		    (longlong_t)dle->dle_mintxg,
1276		    (longlong_t)dle->dle_bpobj.bpo_object);
1277
1278		if (dump_opt['d'] >= 5)
1279			dump_bpobj(&dle->dle_bpobj, "");
1280	}
1281}
1282
1283static avl_tree_t idx_tree;
1284static avl_tree_t domain_tree;
1285static boolean_t fuid_table_loaded;
1286static boolean_t sa_loaded;
1287sa_attr_type_t *sa_attr_table;
1288
1289static void
1290fuid_table_destroy()
1291{
1292	if (fuid_table_loaded) {
1293		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1294		fuid_table_loaded = B_FALSE;
1295	}
1296}
1297
1298/*
1299 * print uid or gid information.
1300 * For normal POSIX id just the id is printed in decimal format.
1301 * For CIFS files with FUID the fuid is printed in hex followed by
1302 * the doman-rid string.
1303 */
1304static void
1305print_idstr(uint64_t id, const char *id_type)
1306{
1307	if (FUID_INDEX(id)) {
1308		char *domain;
1309
1310		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1311		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
1312		    (u_longlong_t)id, domain, (int)FUID_RID(id));
1313	} else {
1314		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1315	}
1316
1317}
1318
1319static void
1320dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1321{
1322	uint32_t uid_idx, gid_idx;
1323
1324	uid_idx = FUID_INDEX(uid);
1325	gid_idx = FUID_INDEX(gid);
1326
1327	/* Load domain table, if not already loaded */
1328	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1329		uint64_t fuid_obj;
1330
1331		/* first find the fuid object.  It lives in the master node */
1332		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1333		    8, 1, &fuid_obj) == 0);
1334		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1335		(void) zfs_fuid_table_load(os, fuid_obj,
1336		    &idx_tree, &domain_tree);
1337		fuid_table_loaded = B_TRUE;
1338	}
1339
1340	print_idstr(uid, "uid");
1341	print_idstr(gid, "gid");
1342}
1343
1344/*ARGSUSED*/
1345static void
1346dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1347{
1348	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
1349	sa_handle_t *hdl;
1350	uint64_t xattr, rdev, gen;
1351	uint64_t uid, gid, mode, fsize, parent, links;
1352	uint64_t pflags;
1353	uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1354	time_t z_crtime, z_atime, z_mtime, z_ctime;
1355	sa_bulk_attr_t bulk[12];
1356	int idx = 0;
1357	int error;
1358
1359	if (!sa_loaded) {
1360		uint64_t sa_attrs = 0;
1361		uint64_t version;
1362
1363		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1364		    8, 1, &version) == 0);
1365		if (version >= ZPL_VERSION_SA) {
1366			VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1367			    8, 1, &sa_attrs) == 0);
1368		}
1369		if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1370		    ZPL_END, &sa_attr_table)) != 0) {
1371			(void) printf("sa_setup failed errno %d, can't "
1372			    "display znode contents\n", error);
1373			return;
1374		}
1375		sa_loaded = B_TRUE;
1376	}
1377
1378	if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1379		(void) printf("Failed to get handle for SA znode\n");
1380		return;
1381	}
1382
1383	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1384	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1385	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1386	    &links, 8);
1387	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1388	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1389	    &mode, 8);
1390	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1391	    NULL, &parent, 8);
1392	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1393	    &fsize, 8);
1394	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1395	    acctm, 16);
1396	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1397	    modtm, 16);
1398	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1399	    crtm, 16);
1400	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1401	    chgtm, 16);
1402	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1403	    &pflags, 8);
1404
1405	if (sa_bulk_lookup(hdl, bulk, idx)) {
1406		(void) sa_handle_destroy(hdl);
1407		return;
1408	}
1409
1410	error = zfs_obj_to_path(os, object, path, sizeof (path));
1411	if (error != 0) {
1412		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1413		    (u_longlong_t)object);
1414	}
1415	if (dump_opt['d'] < 3) {
1416		(void) printf("\t%s\n", path);
1417		(void) sa_handle_destroy(hdl);
1418		return;
1419	}
1420
1421	z_crtime = (time_t)crtm[0];
1422	z_atime = (time_t)acctm[0];
1423	z_mtime = (time_t)modtm[0];
1424	z_ctime = (time_t)chgtm[0];
1425
1426	(void) printf("\tpath	%s\n", path);
1427	dump_uidgid(os, uid, gid);
1428	(void) printf("\tatime	%s", ctime(&z_atime));
1429	(void) printf("\tmtime	%s", ctime(&z_mtime));
1430	(void) printf("\tctime	%s", ctime(&z_ctime));
1431	(void) printf("\tcrtime	%s", ctime(&z_crtime));
1432	(void) printf("\tgen	%llu\n", (u_longlong_t)gen);
1433	(void) printf("\tmode	%llo\n", (u_longlong_t)mode);
1434	(void) printf("\tsize	%llu\n", (u_longlong_t)fsize);
1435	(void) printf("\tparent	%llu\n", (u_longlong_t)parent);
1436	(void) printf("\tlinks	%llu\n", (u_longlong_t)links);
1437	(void) printf("\tpflags	%llx\n", (u_longlong_t)pflags);
1438	if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1439	    sizeof (uint64_t)) == 0)
1440		(void) printf("\txattr	%llu\n", (u_longlong_t)xattr);
1441	if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1442	    sizeof (uint64_t)) == 0)
1443		(void) printf("\trdev	0x%016llx\n", (u_longlong_t)rdev);
1444	sa_handle_destroy(hdl);
1445}
1446
1447/*ARGSUSED*/
1448static void
1449dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1450{
1451}
1452
1453/*ARGSUSED*/
1454static void
1455dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1456{
1457}
1458
1459static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1460	dump_none,		/* unallocated			*/
1461	dump_zap,		/* object directory		*/
1462	dump_uint64,		/* object array			*/
1463	dump_none,		/* packed nvlist		*/
1464	dump_packed_nvlist,	/* packed nvlist size		*/
1465	dump_none,		/* bplist			*/
1466	dump_none,		/* bplist header		*/
1467	dump_none,		/* SPA space map header		*/
1468	dump_none,		/* SPA space map		*/
1469	dump_none,		/* ZIL intent log		*/
1470	dump_dnode,		/* DMU dnode			*/
1471	dump_dmu_objset,	/* DMU objset			*/
1472	dump_dsl_dir,		/* DSL directory		*/
1473	dump_zap,		/* DSL directory child map	*/
1474	dump_zap,		/* DSL dataset snap map		*/
1475	dump_zap,		/* DSL props			*/
1476	dump_dsl_dataset,	/* DSL dataset			*/
1477	dump_znode,		/* ZFS znode			*/
1478	dump_acl,		/* ZFS V0 ACL			*/
1479	dump_uint8,		/* ZFS plain file		*/
1480	dump_zpldir,		/* ZFS directory		*/
1481	dump_zap,		/* ZFS master node		*/
1482	dump_zap,		/* ZFS delete queue		*/
1483	dump_uint8,		/* zvol object			*/
1484	dump_zap,		/* zvol prop			*/
1485	dump_uint8,		/* other uint8[]		*/
1486	dump_uint64,		/* other uint64[]		*/
1487	dump_zap,		/* other ZAP			*/
1488	dump_zap,		/* persistent error log		*/
1489	dump_uint8,		/* SPA history			*/
1490	dump_history_offsets,	/* SPA history offsets		*/
1491	dump_zap,		/* Pool properties		*/
1492	dump_zap,		/* DSL permissions		*/
1493	dump_acl,		/* ZFS ACL			*/
1494	dump_uint8,		/* ZFS SYSACL			*/
1495	dump_none,		/* FUID nvlist			*/
1496	dump_packed_nvlist,	/* FUID nvlist size		*/
1497	dump_zap,		/* DSL dataset next clones	*/
1498	dump_zap,		/* DSL scrub queue		*/
1499	dump_zap,		/* ZFS user/group used		*/
1500	dump_zap,		/* ZFS user/group quota		*/
1501	dump_zap,		/* snapshot refcount tags	*/
1502	dump_ddt_zap,		/* DDT ZAP object		*/
1503	dump_zap,		/* DDT statistics		*/
1504	dump_znode,		/* SA object			*/
1505	dump_zap,		/* SA Master Node		*/
1506	dump_sa_attrs,		/* SA attribute registration	*/
1507	dump_sa_layouts,	/* SA attribute layouts		*/
1508	dump_zap,		/* DSL scrub translations	*/
1509	dump_none,		/* fake dedup BP		*/
1510	dump_zap,		/* deadlist			*/
1511	dump_none,		/* deadlist hdr			*/
1512	dump_zap,		/* dsl clones			*/
1513	dump_none,		/* bpobj subobjs		*/
1514	dump_unknown,		/* Unknown type, must be last	*/
1515};
1516
1517static void
1518dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1519{
1520	dmu_buf_t *db = NULL;
1521	dmu_object_info_t doi;
1522	dnode_t *dn;
1523	void *bonus = NULL;
1524	size_t bsize = 0;
1525	char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1526	char bonus_size[32];
1527	char aux[50];
1528	int error;
1529
1530	if (*print_header) {
1531		(void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1532		    "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1533		    "%full", "type");
1534		*print_header = 0;
1535	}
1536
1537	if (object == 0) {
1538		dn = DMU_META_DNODE(os);
1539	} else {
1540		error = dmu_bonus_hold(os, object, FTAG, &db);
1541		if (error)
1542			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1543			    object, error);
1544		bonus = db->db_data;
1545		bsize = db->db_size;
1546		dn = DB_DNODE((dmu_buf_impl_t *)db);
1547	}
1548	dmu_object_info_from_dnode(dn, &doi);
1549
1550	zdb_nicenum(doi.doi_metadata_block_size, iblk);
1551	zdb_nicenum(doi.doi_data_block_size, dblk);
1552	zdb_nicenum(doi.doi_max_offset, lsize);
1553	zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1554	zdb_nicenum(doi.doi_bonus_size, bonus_size);
1555	(void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1556	    doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1557	    doi.doi_max_offset);
1558
1559	aux[0] = '\0';
1560
1561	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1562		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1563		    ZDB_CHECKSUM_NAME(doi.doi_checksum));
1564	}
1565
1566	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1567		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1568		    ZDB_COMPRESS_NAME(doi.doi_compress));
1569	}
1570
1571	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1572	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1573	    asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1574
1575	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1576		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1577		    "", "", "", "", "", bonus_size, "bonus",
1578		    ZDB_OT_NAME(doi.doi_bonus_type));
1579	}
1580
1581	if (verbosity >= 4) {
1582		(void) printf("\tdnode flags: %s%s%s\n",
1583		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1584		    "USED_BYTES " : "",
1585		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1586		    "USERUSED_ACCOUNTED " : "",
1587		    (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1588		    "SPILL_BLKPTR" : "");
1589		(void) printf("\tdnode maxblkid: %llu\n",
1590		    (longlong_t)dn->dn_phys->dn_maxblkid);
1591
1592		object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1593		    bonus, bsize);
1594		object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1595		*print_header = 1;
1596	}
1597
1598	if (verbosity >= 5)
1599		dump_indirect(dn);
1600
1601	if (verbosity >= 5) {
1602		/*
1603		 * Report the list of segments that comprise the object.
1604		 */
1605		uint64_t start = 0;
1606		uint64_t end;
1607		uint64_t blkfill = 1;
1608		int minlvl = 1;
1609
1610		if (dn->dn_type == DMU_OT_DNODE) {
1611			minlvl = 0;
1612			blkfill = DNODES_PER_BLOCK;
1613		}
1614
1615		for (;;) {
1616			char segsize[32];
1617			error = dnode_next_offset(dn,
1618			    0, &start, minlvl, blkfill, 0);
1619			if (error)
1620				break;
1621			end = start;
1622			error = dnode_next_offset(dn,
1623			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1624			zdb_nicenum(end - start, segsize);
1625			(void) printf("\t\tsegment [%016llx, %016llx)"
1626			    " size %5s\n", (u_longlong_t)start,
1627			    (u_longlong_t)end, segsize);
1628			if (error)
1629				break;
1630			start = end;
1631		}
1632	}
1633
1634	if (db != NULL)
1635		dmu_buf_rele(db, FTAG);
1636}
1637
1638static char *objset_types[DMU_OST_NUMTYPES] = {
1639	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1640
1641static void
1642dump_dir(objset_t *os)
1643{
1644	dmu_objset_stats_t dds;
1645	uint64_t object, object_count;
1646	uint64_t refdbytes, usedobjs, scratch;
1647	char numbuf[32];
1648	char blkbuf[BP_SPRINTF_LEN + 20];
1649	char osname[MAXNAMELEN];
1650	char *type = "UNKNOWN";
1651	int verbosity = dump_opt['d'];
1652	int print_header = 1;
1653	int i, error;
1654
1655	dmu_objset_fast_stat(os, &dds);
1656
1657	if (dds.dds_type < DMU_OST_NUMTYPES)
1658		type = objset_types[dds.dds_type];
1659
1660	if (dds.dds_type == DMU_OST_META) {
1661		dds.dds_creation_txg = TXG_INITIAL;
1662		usedobjs = os->os_rootbp->blk_fill;
1663		refdbytes = os->os_spa->spa_dsl_pool->
1664		    dp_mos_dir->dd_phys->dd_used_bytes;
1665	} else {
1666		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1667	}
1668
1669	ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1670
1671	zdb_nicenum(refdbytes, numbuf);
1672
1673	if (verbosity >= 4) {
1674		(void) sprintf(blkbuf, ", rootbp ");
1675		(void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1676	} else {
1677		blkbuf[0] = '\0';
1678	}
1679
1680	dmu_objset_name(os, osname);
1681
1682	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1683	    "%s, %llu objects%s\n",
1684	    osname, type, (u_longlong_t)dmu_objset_id(os),
1685	    (u_longlong_t)dds.dds_creation_txg,
1686	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1687
1688	if (zopt_objects != 0) {
1689		for (i = 0; i < zopt_objects; i++)
1690			dump_object(os, zopt_object[i], verbosity,
1691			    &print_header);
1692		(void) printf("\n");
1693		return;
1694	}
1695
1696	if (dump_opt['i'] != 0 || verbosity >= 2)
1697		dump_intent_log(dmu_objset_zil(os));
1698
1699	if (dmu_objset_ds(os) != NULL)
1700		dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1701
1702	if (verbosity < 2)
1703		return;
1704
1705	if (os->os_rootbp->blk_birth == 0)
1706		return;
1707
1708	dump_object(os, 0, verbosity, &print_header);
1709	object_count = 0;
1710	if (DMU_USERUSED_DNODE(os) != NULL &&
1711	    DMU_USERUSED_DNODE(os)->dn_type != 0) {
1712		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1713		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1714	}
1715
1716	object = 0;
1717	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1718		dump_object(os, object, verbosity, &print_header);
1719		object_count++;
1720	}
1721
1722	ASSERT3U(object_count, ==, usedobjs);
1723
1724	(void) printf("\n");
1725
1726	if (error != ESRCH) {
1727		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1728		abort();
1729	}
1730}
1731
1732static void
1733dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1734{
1735	time_t timestamp = ub->ub_timestamp;
1736
1737	(void) printf(header ? header : "");
1738	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1739	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1740	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1741	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1742	(void) printf("\ttimestamp = %llu UTC = %s",
1743	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1744	if (dump_opt['u'] >= 3) {
1745		char blkbuf[BP_SPRINTF_LEN];
1746		sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1747		(void) printf("\trootbp = %s\n", blkbuf);
1748	}
1749	(void) printf(footer ? footer : "");
1750}
1751
1752static void
1753dump_config(spa_t *spa)
1754{
1755	dmu_buf_t *db;
1756	size_t nvsize = 0;
1757	int error = 0;
1758
1759
1760	error = dmu_bonus_hold(spa->spa_meta_objset,
1761	    spa->spa_config_object, FTAG, &db);
1762
1763	if (error == 0) {
1764		nvsize = *(uint64_t *)db->db_data;
1765		dmu_buf_rele(db, FTAG);
1766
1767		(void) printf("\nMOS Configuration:\n");
1768		dump_packed_nvlist(spa->spa_meta_objset,
1769		    spa->spa_config_object, (void *)&nvsize, 1);
1770	} else {
1771		(void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1772		    (u_longlong_t)spa->spa_config_object, error);
1773	}
1774}
1775
1776static void
1777dump_cachefile(const char *cachefile)
1778{
1779	int fd;
1780	struct stat64 statbuf;
1781	char *buf;
1782	nvlist_t *config;
1783
1784	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1785		(void) printf("cannot open '%s': %s\n", cachefile,
1786		    strerror(errno));
1787		exit(1);
1788	}
1789
1790	if (fstat64(fd, &statbuf) != 0) {
1791		(void) printf("failed to stat '%s': %s\n", cachefile,
1792		    strerror(errno));
1793		exit(1);
1794	}
1795
1796	if ((buf = malloc(statbuf.st_size)) == NULL) {
1797		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1798		    (u_longlong_t)statbuf.st_size);
1799		exit(1);
1800	}
1801
1802	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1803		(void) fprintf(stderr, "failed to read %llu bytes\n",
1804		    (u_longlong_t)statbuf.st_size);
1805		exit(1);
1806	}
1807
1808	(void) close(fd);
1809
1810	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1811		(void) fprintf(stderr, "failed to unpack nvlist\n");
1812		exit(1);
1813	}
1814
1815	free(buf);
1816
1817	dump_nvlist(config, 0);
1818
1819	nvlist_free(config);
1820}
1821
1822#define	ZDB_MAX_UB_HEADER_SIZE 32
1823
1824static void
1825dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1826{
1827	vdev_t vd;
1828	vdev_t *vdp = &vd;
1829	char header[ZDB_MAX_UB_HEADER_SIZE];
1830
1831	vd.vdev_ashift = ashift;
1832	vdp->vdev_top = vdp;
1833
1834	for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1835		uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1836		uberblock_t *ub = (void *)((char *)lbl + uoff);
1837
1838		if (uberblock_verify(ub))
1839			continue;
1840		(void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1841		    "Uberblock[%d]\n", i);
1842		dump_uberblock(ub, header, "");
1843	}
1844}
1845
1846static void
1847dump_label(const char *dev)
1848{
1849	int fd;
1850	vdev_label_t label;
1851	char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1852	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1853	struct stat64 statbuf;
1854	uint64_t psize, ashift;
1855	int len = strlen(dev) + 1;
1856
1857	if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1858		len++;
1859		path = malloc(len);
1860		(void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1861	} else {
1862		path = strdup(dev);
1863	}
1864
1865	if ((fd = open64(path, O_RDONLY)) < 0) {
1866		(void) printf("cannot open '%s': %s\n", path, strerror(errno));
1867		free(path);
1868		exit(1);
1869	}
1870
1871	if (fstat64(fd, &statbuf) != 0) {
1872		(void) printf("failed to stat '%s': %s\n", path,
1873		    strerror(errno));
1874		free(path);
1875		(void) close(fd);
1876		exit(1);
1877	}
1878
1879	if (S_ISBLK(statbuf.st_mode)) {
1880		(void) printf("cannot use '%s': character device required\n",
1881		    path);
1882		free(path);
1883		(void) close(fd);
1884		exit(1);
1885	}
1886
1887	psize = statbuf.st_size;
1888	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1889
1890	for (int l = 0; l < VDEV_LABELS; l++) {
1891		nvlist_t *config = NULL;
1892
1893		(void) printf("--------------------------------------------\n");
1894		(void) printf("LABEL %d\n", l);
1895		(void) printf("--------------------------------------------\n");
1896
1897		if (pread64(fd, &label, sizeof (label),
1898		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1899			(void) printf("failed to read label %d\n", l);
1900			continue;
1901		}
1902
1903		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1904			(void) printf("failed to unpack label %d\n", l);
1905			ashift = SPA_MINBLOCKSHIFT;
1906		} else {
1907			nvlist_t *vdev_tree = NULL;
1908
1909			dump_nvlist(config, 4);
1910			if ((nvlist_lookup_nvlist(config,
1911			    ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1912			    (nvlist_lookup_uint64(vdev_tree,
1913			    ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1914				ashift = SPA_MINBLOCKSHIFT;
1915			nvlist_free(config);
1916		}
1917		if (dump_opt['u'])
1918			dump_label_uberblocks(&label, ashift);
1919	}
1920
1921	free(path);
1922	(void) close(fd);
1923}
1924
1925/*ARGSUSED*/
1926static int
1927dump_one_dir(const char *dsname, void *arg)
1928{
1929	int error;
1930	objset_t *os;
1931
1932	error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1933	if (error) {
1934		(void) printf("Could not open %s, error %d\n", dsname, error);
1935		return (0);
1936	}
1937	dump_dir(os);
1938	dmu_objset_disown(os, FTAG);
1939	fuid_table_destroy();
1940	sa_loaded = B_FALSE;
1941	return (0);
1942}
1943
1944/*
1945 * Block statistics.
1946 */
1947typedef struct zdb_blkstats {
1948	uint64_t	zb_asize;
1949	uint64_t	zb_lsize;
1950	uint64_t	zb_psize;
1951	uint64_t	zb_count;
1952} zdb_blkstats_t;
1953
1954/*
1955 * Extended object types to report deferred frees and dedup auto-ditto blocks.
1956 */
1957#define	ZDB_OT_DEFERRED	(DMU_OT_NUMTYPES + 0)
1958#define	ZDB_OT_DITTO	(DMU_OT_NUMTYPES + 1)
1959#define	ZDB_OT_OTHER	(DMU_OT_NUMTYPES + 2)
1960#define	ZDB_OT_TOTAL	(DMU_OT_NUMTYPES + 3)
1961
1962static char *zdb_ot_extname[] = {
1963	"deferred free",
1964	"dedup ditto",
1965	"other",
1966	"Total",
1967};
1968
1969#define	ZB_TOTAL	DN_MAX_LEVELS
1970
1971typedef struct zdb_cb {
1972	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1973	uint64_t	zcb_dedup_asize;
1974	uint64_t	zcb_dedup_blocks;
1975	uint64_t	zcb_errors[256];
1976	int		zcb_readfails;
1977	int		zcb_haderrors;
1978	spa_t		*zcb_spa;
1979} zdb_cb_t;
1980
1981static void
1982zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
1983    dmu_object_type_t type)
1984{
1985	uint64_t refcnt = 0;
1986
1987	ASSERT(type < ZDB_OT_TOTAL);
1988
1989	if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1990		return;
1991
1992	for (int i = 0; i < 4; i++) {
1993		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1994		int t = (i & 1) ? type : ZDB_OT_TOTAL;
1995		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1996
1997		zb->zb_asize += BP_GET_ASIZE(bp);
1998		zb->zb_lsize += BP_GET_LSIZE(bp);
1999		zb->zb_psize += BP_GET_PSIZE(bp);
2000		zb->zb_count++;
2001	}
2002
2003	if (dump_opt['L'])
2004		return;
2005
2006	if (BP_GET_DEDUP(bp)) {
2007		ddt_t *ddt;
2008		ddt_entry_t *dde;
2009
2010		ddt = ddt_select(zcb->zcb_spa, bp);
2011		ddt_enter(ddt);
2012		dde = ddt_lookup(ddt, bp, B_FALSE);
2013
2014		if (dde == NULL) {
2015			refcnt = 0;
2016		} else {
2017			ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2018			ddt_phys_decref(ddp);
2019			refcnt = ddp->ddp_refcnt;
2020			if (ddt_phys_total_refcnt(dde) == 0)
2021				ddt_remove(ddt, dde);
2022		}
2023		ddt_exit(ddt);
2024	}
2025
2026	VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2027	    refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2028	    bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2029}
2030
2031/* ARGSUSED */
2032static int
2033zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
2034    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2035{
2036	zdb_cb_t *zcb = arg;
2037	char blkbuf[BP_SPRINTF_LEN];
2038	dmu_object_type_t type;
2039	boolean_t is_metadata;
2040
2041	if (bp == NULL)
2042		return (0);
2043
2044	type = BP_GET_TYPE(bp);
2045
2046	zdb_count_block(zcb, zilog, bp,
2047	    (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2048
2049	is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2050
2051	if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2052		int ioerr;
2053		size_t size = BP_GET_PSIZE(bp);
2054		void *data = malloc(size);
2055		int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2056
2057		/* If it's an intent log block, failure is expected. */
2058		if (zb->zb_level == ZB_ZIL_LEVEL)
2059			flags |= ZIO_FLAG_SPECULATIVE;
2060
2061		ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
2062		    NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2063
2064		free(data);
2065
2066		if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) {
2067			zcb->zcb_haderrors = 1;
2068			zcb->zcb_errors[ioerr]++;
2069
2070			if (dump_opt['b'] >= 2)
2071				sprintf_blkptr(blkbuf, bp);
2072			else
2073				blkbuf[0] = '\0';
2074
2075			(void) printf("zdb_blkptr_cb: "
2076			    "Got error %d reading "
2077			    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2078			    ioerr,
2079			    (u_longlong_t)zb->zb_objset,
2080			    (u_longlong_t)zb->zb_object,
2081			    (u_longlong_t)zb->zb_level,
2082			    (u_longlong_t)zb->zb_blkid,
2083			    blkbuf);
2084		}
2085	}
2086
2087	zcb->zcb_readfails = 0;
2088
2089	if (dump_opt['b'] >= 4) {
2090		sprintf_blkptr(blkbuf, bp);
2091		(void) printf("objset %llu object %llu "
2092		    "level %lld offset 0x%llx %s\n",
2093		    (u_longlong_t)zb->zb_objset,
2094		    (u_longlong_t)zb->zb_object,
2095		    (longlong_t)zb->zb_level,
2096		    (u_longlong_t)blkid2offset(dnp, bp, zb),
2097		    blkbuf);
2098	}
2099
2100	return (0);
2101}
2102
2103static void
2104zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2105{
2106	vdev_t *vd = sm->sm_ppd;
2107
2108	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2109	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2110}
2111
2112/* ARGSUSED */
2113static void
2114zdb_space_map_load(space_map_t *sm)
2115{
2116}
2117
2118static void
2119zdb_space_map_unload(space_map_t *sm)
2120{
2121	space_map_vacate(sm, zdb_leak, sm);
2122}
2123
2124/* ARGSUSED */
2125static void
2126zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2127{
2128}
2129
2130static space_map_ops_t zdb_space_map_ops = {
2131	zdb_space_map_load,
2132	zdb_space_map_unload,
2133	NULL,	/* alloc */
2134	zdb_space_map_claim,
2135	NULL,	/* free */
2136	NULL	/* maxsize */
2137};
2138
2139static void
2140zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2141{
2142	ddt_bookmark_t ddb = { 0 };
2143	ddt_entry_t dde;
2144	int error;
2145
2146	while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2147		blkptr_t blk;
2148		ddt_phys_t *ddp = dde.dde_phys;
2149
2150		if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2151			return;
2152
2153		ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2154
2155		for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2156			if (ddp->ddp_phys_birth == 0)
2157				continue;
2158			ddt_bp_create(ddb.ddb_checksum,
2159			    &dde.dde_key, ddp, &blk);
2160			if (p == DDT_PHYS_DITTO) {
2161				zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2162			} else {
2163				zcb->zcb_dedup_asize +=
2164				    BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2165				zcb->zcb_dedup_blocks++;
2166			}
2167		}
2168		if (!dump_opt['L']) {
2169			ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2170			ddt_enter(ddt);
2171			VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2172			ddt_exit(ddt);
2173		}
2174	}
2175
2176	ASSERT(error == ENOENT);
2177}
2178
2179static void
2180zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2181{
2182	zcb->zcb_spa = spa;
2183
2184	if (!dump_opt['L']) {
2185		vdev_t *rvd = spa->spa_root_vdev;
2186		for (int c = 0; c < rvd->vdev_children; c++) {
2187			vdev_t *vd = rvd->vdev_child[c];
2188			for (int m = 0; m < vd->vdev_ms_count; m++) {
2189				metaslab_t *msp = vd->vdev_ms[m];
2190				mutex_enter(&msp->ms_lock);
2191				space_map_unload(&msp->ms_map);
2192				VERIFY(space_map_load(&msp->ms_map,
2193				    &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2194				    spa->spa_meta_objset) == 0);
2195				msp->ms_map.sm_ppd = vd;
2196				mutex_exit(&msp->ms_lock);
2197			}
2198		}
2199	}
2200
2201	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2202
2203	zdb_ddt_leak_init(spa, zcb);
2204
2205	spa_config_exit(spa, SCL_CONFIG, FTAG);
2206}
2207
2208static void
2209zdb_leak_fini(spa_t *spa)
2210{
2211	if (!dump_opt['L']) {
2212		vdev_t *rvd = spa->spa_root_vdev;
2213		for (int c = 0; c < rvd->vdev_children; c++) {
2214			vdev_t *vd = rvd->vdev_child[c];
2215			for (int m = 0; m < vd->vdev_ms_count; m++) {
2216				metaslab_t *msp = vd->vdev_ms[m];
2217				mutex_enter(&msp->ms_lock);
2218				space_map_unload(&msp->ms_map);
2219				mutex_exit(&msp->ms_lock);
2220			}
2221		}
2222	}
2223}
2224
2225/* ARGSUSED */
2226static int
2227count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2228{
2229	zdb_cb_t *zcb = arg;
2230
2231	if (dump_opt['b'] >= 4) {
2232		char blkbuf[BP_SPRINTF_LEN];
2233		sprintf_blkptr(blkbuf, bp);
2234		(void) printf("[%s] %s\n",
2235		    "deferred free", blkbuf);
2236	}
2237	zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2238	return (0);
2239}
2240
2241static int
2242dump_block_stats(spa_t *spa)
2243{
2244	zdb_cb_t zcb = { 0 };
2245	zdb_blkstats_t *zb, *tzb;
2246	uint64_t norm_alloc, norm_space, total_alloc, total_found;
2247	int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2248	int leaks = 0;
2249
2250	(void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
2251	    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2252	    (dump_opt['c'] == 1) ? "metadata " : "",
2253	    dump_opt['c'] ? "checksums " : "",
2254	    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2255	    !dump_opt['L'] ? "nothing leaked " : "");
2256
2257	/*
2258	 * Load all space maps as SM_ALLOC maps, then traverse the pool
2259	 * claiming each block we discover.  If the pool is perfectly
2260	 * consistent, the space maps will be empty when we're done.
2261	 * Anything left over is a leak; any block we can't claim (because
2262	 * it's not part of any space map) is a double allocation,
2263	 * reference to a freed block, or an unclaimed log block.
2264	 */
2265	zdb_leak_init(spa, &zcb);
2266
2267	/*
2268	 * If there's a deferred-free bplist, process that first.
2269	 */
2270	(void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2271	    count_block_cb, &zcb, NULL);
2272	(void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2273	    count_block_cb, &zcb, NULL);
2274	if (spa_feature_is_active(spa,
2275	    &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2276		VERIFY0(bptree_iterate(spa->spa_meta_objset,
2277		    spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2278		    &zcb, NULL));
2279	}
2280
2281	if (dump_opt['c'] > 1)
2282		flags |= TRAVERSE_PREFETCH_DATA;
2283
2284	zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2285
2286	if (zcb.zcb_haderrors) {
2287		(void) printf("\nError counts:\n\n");
2288		(void) printf("\t%5s  %s\n", "errno", "count");
2289		for (int e = 0; e < 256; e++) {
2290			if (zcb.zcb_errors[e] != 0) {
2291				(void) printf("\t%5d  %llu\n",
2292				    e, (u_longlong_t)zcb.zcb_errors[e]);
2293			}
2294		}
2295	}
2296
2297	/*
2298	 * Report any leaked segments.
2299	 */
2300	zdb_leak_fini(spa);
2301
2302	tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2303
2304	norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2305	norm_space = metaslab_class_get_space(spa_normal_class(spa));
2306
2307	total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2308	total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2309
2310	if (total_found == total_alloc) {
2311		if (!dump_opt['L'])
2312			(void) printf("\n\tNo leaks (block sum matches space"
2313			    " maps exactly)\n");
2314	} else {
2315		(void) printf("block traversal size %llu != alloc %llu "
2316		    "(%s %lld)\n",
2317		    (u_longlong_t)total_found,
2318		    (u_longlong_t)total_alloc,
2319		    (dump_opt['L']) ? "unreachable" : "leaked",
2320		    (longlong_t)(total_alloc - total_found));
2321		leaks = 1;
2322	}
2323
2324	if (tzb->zb_count == 0)
2325		return (2);
2326
2327	(void) printf("\n");
2328	(void) printf("\tbp count:      %10llu\n",
2329	    (u_longlong_t)tzb->zb_count);
2330	(void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2331	    (u_longlong_t)tzb->zb_lsize,
2332	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2333	(void) printf("\tbp physical:   %10llu      avg:"
2334	    " %6llu     compression: %6.2f\n",
2335	    (u_longlong_t)tzb->zb_psize,
2336	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2337	    (double)tzb->zb_lsize / tzb->zb_psize);
2338	(void) printf("\tbp allocated:  %10llu      avg:"
2339	    " %6llu     compression: %6.2f\n",
2340	    (u_longlong_t)tzb->zb_asize,
2341	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2342	    (double)tzb->zb_lsize / tzb->zb_asize);
2343	(void) printf("\tbp deduped:    %10llu    ref>1:"
2344	    " %6llu   deduplication: %6.2f\n",
2345	    (u_longlong_t)zcb.zcb_dedup_asize,
2346	    (u_longlong_t)zcb.zcb_dedup_blocks,
2347	    (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2348	(void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2349	    (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2350
2351	if (dump_opt['b'] >= 2) {
2352		int l, t, level;
2353		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2354		    "\t  avg\t comp\t%%Total\tType\n");
2355
2356		for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2357			char csize[32], lsize[32], psize[32], asize[32];
2358			char avg[32];
2359			char *typename;
2360
2361			if (t < DMU_OT_NUMTYPES)
2362				typename = dmu_ot[t].ot_name;
2363			else
2364				typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2365
2366			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2367				(void) printf("%6s\t%5s\t%5s\t%5s"
2368				    "\t%5s\t%5s\t%6s\t%s\n",
2369				    "-",
2370				    "-",
2371				    "-",
2372				    "-",
2373				    "-",
2374				    "-",
2375				    "-",
2376				    typename);
2377				continue;
2378			}
2379
2380			for (l = ZB_TOTAL - 1; l >= -1; l--) {
2381				level = (l == -1 ? ZB_TOTAL : l);
2382				zb = &zcb.zcb_type[level][t];
2383
2384				if (zb->zb_asize == 0)
2385					continue;
2386
2387				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2388					continue;
2389
2390				if (level == 0 && zb->zb_asize ==
2391				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2392					continue;
2393
2394				zdb_nicenum(zb->zb_count, csize);
2395				zdb_nicenum(zb->zb_lsize, lsize);
2396				zdb_nicenum(zb->zb_psize, psize);
2397				zdb_nicenum(zb->zb_asize, asize);
2398				zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2399
2400				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2401				    "\t%5.2f\t%6.2f\t",
2402				    csize, lsize, psize, asize, avg,
2403				    (double)zb->zb_lsize / zb->zb_psize,
2404				    100.0 * zb->zb_asize / tzb->zb_asize);
2405
2406				if (level == ZB_TOTAL)
2407					(void) printf("%s\n", typename);
2408				else
2409					(void) printf("    L%d %s\n",
2410					    level, typename);
2411			}
2412		}
2413	}
2414
2415	(void) printf("\n");
2416
2417	if (leaks)
2418		return (2);
2419
2420	if (zcb.zcb_haderrors)
2421		return (3);
2422
2423	return (0);
2424}
2425
2426typedef struct zdb_ddt_entry {
2427	ddt_key_t	zdde_key;
2428	uint64_t	zdde_ref_blocks;
2429	uint64_t	zdde_ref_lsize;
2430	uint64_t	zdde_ref_psize;
2431	uint64_t	zdde_ref_dsize;
2432	avl_node_t	zdde_node;
2433} zdb_ddt_entry_t;
2434
2435/* ARGSUSED */
2436static int
2437zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2438    arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2439{
2440	avl_tree_t *t = arg;
2441	avl_index_t where;
2442	zdb_ddt_entry_t *zdde, zdde_search;
2443
2444	if (bp == NULL)
2445		return (0);
2446
2447	if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2448		(void) printf("traversing objset %llu, %llu objects, "
2449		    "%lu blocks so far\n",
2450		    (u_longlong_t)zb->zb_objset,
2451		    (u_longlong_t)bp->blk_fill,
2452		    avl_numnodes(t));
2453	}
2454
2455	if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2456	    BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2457		return (0);
2458
2459	ddt_key_fill(&zdde_search.zdde_key, bp);
2460
2461	zdde = avl_find(t, &zdde_search, &where);
2462
2463	if (zdde == NULL) {
2464		zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2465		zdde->zdde_key = zdde_search.zdde_key;
2466		avl_insert(t, zdde, where);
2467	}
2468
2469	zdde->zdde_ref_blocks += 1;
2470	zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2471	zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2472	zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2473
2474	return (0);
2475}
2476
2477static void
2478dump_simulated_ddt(spa_t *spa)
2479{
2480	avl_tree_t t;
2481	void *cookie = NULL;
2482	zdb_ddt_entry_t *zdde;
2483	ddt_histogram_t ddh_total = { 0 };
2484	ddt_stat_t dds_total = { 0 };
2485
2486	avl_create(&t, ddt_entry_compare,
2487	    sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2488
2489	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2490
2491	(void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2492	    zdb_ddt_add_cb, &t);
2493
2494	spa_config_exit(spa, SCL_CONFIG, FTAG);
2495
2496	while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2497		ddt_stat_t dds;
2498		uint64_t refcnt = zdde->zdde_ref_blocks;
2499		ASSERT(refcnt != 0);
2500
2501		dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2502		dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2503		dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2504		dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2505
2506		dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2507		dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2508		dds.dds_ref_psize = zdde->zdde_ref_psize;
2509		dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2510
2511		ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2512
2513		umem_free(zdde, sizeof (*zdde));
2514	}
2515
2516	avl_destroy(&t);
2517
2518	ddt_histogram_stat(&dds_total, &ddh_total);
2519
2520	(void) printf("Simulated DDT histogram:\n");
2521
2522	zpool_dump_ddt(&dds_total, &ddh_total);
2523
2524	dump_dedup_ratio(&dds_total);
2525}
2526
2527static void
2528dump_zpool(spa_t *spa)
2529{
2530	dsl_pool_t *dp = spa_get_dsl(spa);
2531	int rc = 0;
2532
2533	if (dump_opt['S']) {
2534		dump_simulated_ddt(spa);
2535		return;
2536	}
2537
2538	if (!dump_opt['e'] && dump_opt['C'] > 1) {
2539		(void) printf("\nCached configuration:\n");
2540		dump_nvlist(spa->spa_config, 8);
2541	}
2542
2543	if (dump_opt['C'])
2544		dump_config(spa);
2545
2546	if (dump_opt['u'])
2547		dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2548
2549	if (dump_opt['D'])
2550		dump_all_ddts(spa);
2551
2552	if (dump_opt['d'] > 2 || dump_opt['m'])
2553		dump_metaslabs(spa);
2554
2555	if (dump_opt['d'] || dump_opt['i']) {
2556		dump_dir(dp->dp_meta_objset);
2557		if (dump_opt['d'] >= 3) {
2558			dump_bpobj(&spa->spa_deferred_bpobj, "Deferred frees");
2559			if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2560				dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2561				    "Pool snapshot frees");
2562			}
2563
2564			if (spa_feature_is_active(spa,
2565			    &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2566				dump_bptree(spa->spa_meta_objset,
2567				    spa->spa_dsl_pool->dp_bptree_obj,
2568				    "Pool dataset frees");
2569			}
2570			dump_dtl(spa->spa_root_vdev, 0);
2571		}
2572		(void) dmu_objset_find(spa_name(spa), dump_one_dir,
2573		    NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2574	}
2575	if (dump_opt['b'] || dump_opt['c'])
2576		rc = dump_block_stats(spa);
2577
2578	if (dump_opt['s'])
2579		show_pool_stats(spa);
2580
2581	if (dump_opt['h'])
2582		dump_history(spa);
2583
2584	if (rc != 0)
2585		exit(rc);
2586}
2587
2588#define	ZDB_FLAG_CHECKSUM	0x0001
2589#define	ZDB_FLAG_DECOMPRESS	0x0002
2590#define	ZDB_FLAG_BSWAP		0x0004
2591#define	ZDB_FLAG_GBH		0x0008
2592#define	ZDB_FLAG_INDIRECT	0x0010
2593#define	ZDB_FLAG_PHYS		0x0020
2594#define	ZDB_FLAG_RAW		0x0040
2595#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
2596
2597int flagbits[256];
2598
2599static void
2600zdb_print_blkptr(blkptr_t *bp, int flags)
2601{
2602	char blkbuf[BP_SPRINTF_LEN];
2603
2604	if (flags & ZDB_FLAG_BSWAP)
2605		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2606
2607	sprintf_blkptr(blkbuf, bp);
2608	(void) printf("%s\n", blkbuf);
2609}
2610
2611static void
2612zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2613{
2614	int i;
2615
2616	for (i = 0; i < nbps; i++)
2617		zdb_print_blkptr(&bp[i], flags);
2618}
2619
2620static void
2621zdb_dump_gbh(void *buf, int flags)
2622{
2623	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2624}
2625
2626static void
2627zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2628{
2629	if (flags & ZDB_FLAG_BSWAP)
2630		byteswap_uint64_array(buf, size);
2631	(void) write(1, buf, size);
2632}
2633
2634static void
2635zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2636{
2637	uint64_t *d = (uint64_t *)buf;
2638	int nwords = size / sizeof (uint64_t);
2639	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2640	int i, j;
2641	char *hdr, *c;
2642
2643
2644	if (do_bswap)
2645		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2646	else
2647		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2648
2649	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2650
2651	for (i = 0; i < nwords; i += 2) {
2652		(void) printf("%06llx:  %016llx  %016llx  ",
2653		    (u_longlong_t)(i * sizeof (uint64_t)),
2654		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2655		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2656
2657		c = (char *)&d[i];
2658		for (j = 0; j < 2 * sizeof (uint64_t); j++)
2659			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
2660		(void) printf("\n");
2661	}
2662}
2663
2664/*
2665 * There are two acceptable formats:
2666 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
2667 *	child[.child]*    - For example: 0.1.1
2668 *
2669 * The second form can be used to specify arbitrary vdevs anywhere
2670 * in the heirarchy.  For example, in a pool with a mirror of
2671 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2672 */
2673static vdev_t *
2674zdb_vdev_lookup(vdev_t *vdev, char *path)
2675{
2676	char *s, *p, *q;
2677	int i;
2678
2679	if (vdev == NULL)
2680		return (NULL);
2681
2682	/* First, assume the x.x.x.x format */
2683	i = (int)strtoul(path, &s, 10);
2684	if (s == path || (s && *s != '.' && *s != '\0'))
2685		goto name;
2686	if (i < 0 || i >= vdev->vdev_children)
2687		return (NULL);
2688
2689	vdev = vdev->vdev_child[i];
2690	if (*s == '\0')
2691		return (vdev);
2692	return (zdb_vdev_lookup(vdev, s+1));
2693
2694name:
2695	for (i = 0; i < vdev->vdev_children; i++) {
2696		vdev_t *vc = vdev->vdev_child[i];
2697
2698		if (vc->vdev_path == NULL) {
2699			vc = zdb_vdev_lookup(vc, path);
2700			if (vc == NULL)
2701				continue;
2702			else
2703				return (vc);
2704		}
2705
2706		p = strrchr(vc->vdev_path, '/');
2707		p = p ? p + 1 : vc->vdev_path;
2708		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2709
2710		if (strcmp(vc->vdev_path, path) == 0)
2711			return (vc);
2712		if (strcmp(p, path) == 0)
2713			return (vc);
2714		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2715			return (vc);
2716	}
2717
2718	return (NULL);
2719}
2720
2721/*
2722 * Read a block from a pool and print it out.  The syntax of the
2723 * block descriptor is:
2724 *
2725 *	pool:vdev_specifier:offset:size[:flags]
2726 *
2727 *	pool           - The name of the pool you wish to read from
2728 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2729 *	offset         - offset, in hex, in bytes
2730 *	size           - Amount of data to read, in hex, in bytes
2731 *	flags          - A string of characters specifying options
2732 *		 b: Decode a blkptr at given offset within block
2733 *		*c: Calculate and display checksums
2734 *		 d: Decompress data before dumping
2735 *		 e: Byteswap data before dumping
2736 *		 g: Display data as a gang block header
2737 *		 i: Display as an indirect block
2738 *		 p: Do I/O to physical offset
2739 *		 r: Dump raw data to stdout
2740 *
2741 *              * = not yet implemented
2742 */
2743static void
2744zdb_read_block(char *thing, spa_t *spa)
2745{
2746	blkptr_t blk, *bp = &blk;
2747	dva_t *dva = bp->blk_dva;
2748	int flags = 0;
2749	uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2750	zio_t *zio;
2751	vdev_t *vd;
2752	void *pbuf, *lbuf, *buf;
2753	char *s, *p, *dup, *vdev, *flagstr;
2754	int i, error;
2755
2756	dup = strdup(thing);
2757	s = strtok(dup, ":");
2758	vdev = s ? s : "";
2759	s = strtok(NULL, ":");
2760	offset = strtoull(s ? s : "", NULL, 16);
2761	s = strtok(NULL, ":");
2762	size = strtoull(s ? s : "", NULL, 16);
2763	s = strtok(NULL, ":");
2764	flagstr = s ? s : "";
2765
2766	s = NULL;
2767	if (size == 0)
2768		s = "size must not be zero";
2769	if (!IS_P2ALIGNED(size, DEV_BSIZE))
2770		s = "size must be a multiple of sector size";
2771	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2772		s = "offset must be a multiple of sector size";
2773	if (s) {
2774		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2775		free(dup);
2776		return;
2777	}
2778
2779	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2780		for (i = 0; flagstr[i]; i++) {
2781			int bit = flagbits[(uchar_t)flagstr[i]];
2782
2783			if (bit == 0) {
2784				(void) printf("***Invalid flag: %c\n",
2785				    flagstr[i]);
2786				continue;
2787			}
2788			flags |= bit;
2789
2790			/* If it's not something with an argument, keep going */
2791			if ((bit & (ZDB_FLAG_CHECKSUM |
2792			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
2793				continue;
2794
2795			p = &flagstr[i + 1];
2796			if (bit == ZDB_FLAG_PRINT_BLKPTR)
2797				blkptr_offset = strtoull(p, &p, 16);
2798			if (*p != ':' && *p != '\0') {
2799				(void) printf("***Invalid flag arg: '%s'\n", s);
2800				free(dup);
2801				return;
2802			}
2803		}
2804	}
2805
2806	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2807	if (vd == NULL) {
2808		(void) printf("***Invalid vdev: %s\n", vdev);
2809		free(dup);
2810		return;
2811	} else {
2812		if (vd->vdev_path)
2813			(void) fprintf(stderr, "Found vdev: %s\n",
2814			    vd->vdev_path);
2815		else
2816			(void) fprintf(stderr, "Found vdev type: %s\n",
2817			    vd->vdev_ops->vdev_op_type);
2818	}
2819
2820	psize = size;
2821	lsize = size;
2822
2823	pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2824	lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2825
2826	BP_ZERO(bp);
2827
2828	DVA_SET_VDEV(&dva[0], vd->vdev_id);
2829	DVA_SET_OFFSET(&dva[0], offset);
2830	DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2831	DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2832
2833	BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2834
2835	BP_SET_LSIZE(bp, lsize);
2836	BP_SET_PSIZE(bp, psize);
2837	BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2838	BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2839	BP_SET_TYPE(bp, DMU_OT_NONE);
2840	BP_SET_LEVEL(bp, 0);
2841	BP_SET_DEDUP(bp, 0);
2842	BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2843
2844	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2845	zio = zio_root(spa, NULL, NULL, 0);
2846
2847	if (vd == vd->vdev_top) {
2848		/*
2849		 * Treat this as a normal block read.
2850		 */
2851		zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2852		    ZIO_PRIORITY_SYNC_READ,
2853		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2854	} else {
2855		/*
2856		 * Treat this as a vdev child I/O.
2857		 */
2858		zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2859		    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2860		    ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2861		    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2862		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2863	}
2864
2865	error = zio_wait(zio);
2866	spa_config_exit(spa, SCL_STATE, FTAG);
2867
2868	if (error) {
2869		(void) printf("Read of %s failed, error: %d\n", thing, error);
2870		goto out;
2871	}
2872
2873	if (flags & ZDB_FLAG_DECOMPRESS) {
2874		/*
2875		 * We don't know how the data was compressed, so just try
2876		 * every decompress function at every inflated blocksize.
2877		 */
2878		enum zio_compress c;
2879		void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2880		void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2881
2882		bcopy(pbuf, pbuf2, psize);
2883
2884		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2885		    SPA_MAXBLOCKSIZE - psize) == 0);
2886
2887		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2888		    SPA_MAXBLOCKSIZE - psize) == 0);
2889
2890		for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2891		    lsize -= SPA_MINBLOCKSIZE) {
2892			for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2893				if (zio_decompress_data(c, pbuf, lbuf,
2894				    psize, lsize) == 0 &&
2895				    zio_decompress_data(c, pbuf2, lbuf2,
2896				    psize, lsize) == 0 &&
2897				    bcmp(lbuf, lbuf2, lsize) == 0)
2898					break;
2899			}
2900			if (c != ZIO_COMPRESS_FUNCTIONS)
2901				break;
2902			lsize -= SPA_MINBLOCKSIZE;
2903		}
2904
2905		umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2906		umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2907
2908		if (lsize <= psize) {
2909			(void) printf("Decompress of %s failed\n", thing);
2910			goto out;
2911		}
2912		buf = lbuf;
2913		size = lsize;
2914	} else {
2915		buf = pbuf;
2916		size = psize;
2917	}
2918
2919	if (flags & ZDB_FLAG_PRINT_BLKPTR)
2920		zdb_print_blkptr((blkptr_t *)(void *)
2921		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2922	else if (flags & ZDB_FLAG_RAW)
2923		zdb_dump_block_raw(buf, size, flags);
2924	else if (flags & ZDB_FLAG_INDIRECT)
2925		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2926		    flags);
2927	else if (flags & ZDB_FLAG_GBH)
2928		zdb_dump_gbh(buf, flags);
2929	else
2930		zdb_dump_block(thing, buf, size, flags);
2931
2932out:
2933	umem_free(pbuf, SPA_MAXBLOCKSIZE);
2934	umem_free(lbuf, SPA_MAXBLOCKSIZE);
2935	free(dup);
2936}
2937
2938static boolean_t
2939pool_match(nvlist_t *cfg, char *tgt)
2940{
2941	uint64_t v, guid = strtoull(tgt, NULL, 0);
2942	char *s;
2943
2944	if (guid != 0) {
2945		if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2946			return (v == guid);
2947	} else {
2948		if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2949			return (strcmp(s, tgt) == 0);
2950	}
2951	return (B_FALSE);
2952}
2953
2954static char *
2955find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2956{
2957	nvlist_t *pools;
2958	nvlist_t *match = NULL;
2959	char *name = NULL;
2960	char *sepp = NULL;
2961	char sep;
2962	int count = 0;
2963	importargs_t args = { 0 };
2964
2965	args.paths = dirc;
2966	args.path = dirv;
2967	args.can_be_active = B_TRUE;
2968
2969	if ((sepp = strpbrk(*target, "/@")) != NULL) {
2970		sep = *sepp;
2971		*sepp = '\0';
2972	}
2973
2974	pools = zpool_search_import(g_zfs, &args);
2975
2976	if (pools != NULL) {
2977		nvpair_t *elem = NULL;
2978		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2979			verify(nvpair_value_nvlist(elem, configp) == 0);
2980			if (pool_match(*configp, *target)) {
2981				count++;
2982				if (match != NULL) {
2983					/* print previously found config */
2984					if (name != NULL) {
2985						(void) printf("%s\n", name);
2986						dump_nvlist(match, 8);
2987						name = NULL;
2988					}
2989					(void) printf("%s\n",
2990					    nvpair_name(elem));
2991					dump_nvlist(*configp, 8);
2992				} else {
2993					match = *configp;
2994					name = nvpair_name(elem);
2995				}
2996			}
2997		}
2998	}
2999	if (count > 1)
3000		(void) fatal("\tMatched %d pools - use pool GUID "
3001		    "instead of pool name or \n"
3002		    "\tpool name part of a dataset name to select pool", count);
3003
3004	if (sepp)
3005		*sepp = sep;
3006	/*
3007	 * If pool GUID was specified for pool id, replace it with pool name
3008	 */
3009	if (name && (strstr(*target, name) != *target)) {
3010		int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3011
3012		*target = umem_alloc(sz, UMEM_NOFAIL);
3013		(void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3014	}
3015
3016	*configp = name ? match : NULL;
3017
3018	return (name);
3019}
3020
3021int
3022main(int argc, char **argv)
3023{
3024	int i, c;
3025	struct rlimit rl = { 1024, 1024 };
3026	spa_t *spa = NULL;
3027	objset_t *os = NULL;
3028	int dump_all = 1;
3029	int verbose = 0;
3030	int error = 0;
3031	char **searchdirs = NULL;
3032	int nsearch = 0;
3033	char *target;
3034	nvlist_t *policy = NULL;
3035	uint64_t max_txg = UINT64_MAX;
3036	int rewind = ZPOOL_NEVER_REWIND;
3037
3038	(void) setrlimit(RLIMIT_NOFILE, &rl);
3039	(void) enable_extended_FILE_stdio(-1, -1);
3040
3041	dprintf_setup(&argc, argv);
3042
3043	while ((c = getopt(argc, argv, "bcdhilmsuCDRSAFLXevp:t:U:P")) != -1) {
3044		switch (c) {
3045		case 'b':
3046		case 'c':
3047		case 'd':
3048		case 'h':
3049		case 'i':
3050		case 'l':
3051		case 'm':
3052		case 's':
3053		case 'u':
3054		case 'C':
3055		case 'D':
3056		case 'R':
3057		case 'S':
3058			dump_opt[c]++;
3059			dump_all = 0;
3060			break;
3061		case 'A':
3062		case 'F':
3063		case 'L':
3064		case 'X':
3065		case 'e':
3066		case 'P':
3067			dump_opt[c]++;
3068			break;
3069		case 'v':
3070			verbose++;
3071			break;
3072		case 'p':
3073			if (searchdirs == NULL) {
3074				searchdirs = umem_alloc(sizeof (char *),
3075				    UMEM_NOFAIL);
3076			} else {
3077				char **tmp = umem_alloc((nsearch + 1) *
3078				    sizeof (char *), UMEM_NOFAIL);
3079				bcopy(searchdirs, tmp, nsearch *
3080				    sizeof (char *));
3081				umem_free(searchdirs,
3082				    nsearch * sizeof (char *));
3083				searchdirs = tmp;
3084			}
3085			searchdirs[nsearch++] = optarg;
3086			break;
3087		case 't':
3088			max_txg = strtoull(optarg, NULL, 0);
3089			if (max_txg < TXG_INITIAL) {
3090				(void) fprintf(stderr, "incorrect txg "
3091				    "specified: %s\n", optarg);
3092				usage();
3093			}
3094			break;
3095		case 'U':
3096			spa_config_path = optarg;
3097			break;
3098		default:
3099			usage();
3100			break;
3101		}
3102	}
3103
3104	if (!dump_opt['e'] && searchdirs != NULL) {
3105		(void) fprintf(stderr, "-p option requires use of -e\n");
3106		usage();
3107	}
3108
3109	kernel_init(FREAD);
3110	g_zfs = libzfs_init();
3111	ASSERT(g_zfs != NULL);
3112
3113	if (dump_all)
3114		verbose = MAX(verbose, 1);
3115
3116	for (c = 0; c < 256; c++) {
3117		if (dump_all && !strchr("elAFLRSXP", c))
3118			dump_opt[c] = 1;
3119		if (dump_opt[c])
3120			dump_opt[c] += verbose;
3121	}
3122
3123	aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3124	zfs_recover = (dump_opt['A'] > 1);
3125
3126	argc -= optind;
3127	argv += optind;
3128
3129	if (argc < 2 && dump_opt['R'])
3130		usage();
3131	if (argc < 1) {
3132		if (!dump_opt['e'] && dump_opt['C']) {
3133			dump_cachefile(spa_config_path);
3134			return (0);
3135		}
3136		usage();
3137	}
3138
3139	if (dump_opt['l']) {
3140		dump_label(argv[0]);
3141		return (0);
3142	}
3143
3144	if (dump_opt['X'] || dump_opt['F'])
3145		rewind = ZPOOL_DO_REWIND |
3146		    (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3147
3148	if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3149	    nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3150	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3151		fatal("internal error: %s", strerror(ENOMEM));
3152
3153	error = 0;
3154	target = argv[0];
3155
3156	if (dump_opt['e']) {
3157		nvlist_t *cfg = NULL;
3158		char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3159
3160		error = ENOENT;
3161		if (name) {
3162			if (dump_opt['C'] > 1) {
3163				(void) printf("\nConfiguration for import:\n");
3164				dump_nvlist(cfg, 8);
3165			}
3166			if (nvlist_add_nvlist(cfg,
3167			    ZPOOL_REWIND_POLICY, policy) != 0) {
3168				fatal("can't open '%s': %s",
3169				    target, strerror(ENOMEM));
3170			}
3171			if ((error = spa_import(name, cfg, NULL,
3172			    ZFS_IMPORT_MISSING_LOG)) != 0) {
3173				error = spa_import(name, cfg, NULL,
3174				    ZFS_IMPORT_VERBATIM);
3175			}
3176		}
3177	}
3178
3179	if (error == 0) {
3180		if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3181			error = spa_open_rewind(target, &spa, FTAG, policy,
3182			    NULL);
3183			if (error) {
3184				/*
3185				 * If we're missing the log device then
3186				 * try opening the pool after clearing the
3187				 * log state.
3188				 */
3189				mutex_enter(&spa_namespace_lock);
3190				if ((spa = spa_lookup(target)) != NULL &&
3191				    spa->spa_log_state == SPA_LOG_MISSING) {
3192					spa->spa_log_state = SPA_LOG_CLEAR;
3193					error = 0;
3194				}
3195				mutex_exit(&spa_namespace_lock);
3196
3197				if (!error) {
3198					error = spa_open_rewind(target, &spa,
3199					    FTAG, policy, NULL);
3200				}
3201			}
3202		} else {
3203			error = dmu_objset_own(target, DMU_OST_ANY,
3204			    B_TRUE, FTAG, &os);
3205		}
3206	}
3207	nvlist_free(policy);
3208
3209	if (error)
3210		fatal("can't open '%s': %s", target, strerror(error));
3211
3212	argv++;
3213	argc--;
3214	if (!dump_opt['R']) {
3215		if (argc > 0) {
3216			zopt_objects = argc;
3217			zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3218			for (i = 0; i < zopt_objects; i++) {
3219				errno = 0;
3220				zopt_object[i] = strtoull(argv[i], NULL, 0);
3221				if (zopt_object[i] == 0 && errno != 0)
3222					fatal("bad number %s: %s",
3223					    argv[i], strerror(errno));
3224			}
3225		}
3226		(os != NULL) ? dump_dir(os) : dump_zpool(spa);
3227	} else {
3228		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3229		flagbits['c'] = ZDB_FLAG_CHECKSUM;
3230		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3231		flagbits['e'] = ZDB_FLAG_BSWAP;
3232		flagbits['g'] = ZDB_FLAG_GBH;
3233		flagbits['i'] = ZDB_FLAG_INDIRECT;
3234		flagbits['p'] = ZDB_FLAG_PHYS;
3235		flagbits['r'] = ZDB_FLAG_RAW;
3236
3237		for (i = 0; i < argc; i++)
3238			zdb_read_block(argv[i], spa);
3239	}
3240
3241	(os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3242
3243	fuid_table_destroy();
3244	sa_loaded = B_FALSE;
3245
3246	libzfs_fini(g_zfs);
3247	kernel_fini();
3248
3249	return (0);
3250}
3251