zdb.c revision 490d05b9daa0e60fbb3aac647c556408e88228bd
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) 2013 by Delphix. All rights reserved.
25 */
26
27#include <stdio.h>
28#include <unistd.h>
29#include <stdio_ext.h>
30#include <stdlib.h>
31#include <ctype.h>
32#include <sys/zfs_context.h>
33#include <sys/spa.h>
34#include <sys/spa_impl.h>
35#include <sys/dmu.h>
36#include <sys/zap.h>
37#include <sys/fs/zfs.h>
38#include <sys/zfs_znode.h>
39#include <sys/zfs_sa.h>
40#include <sys/sa.h>
41#include <sys/sa_impl.h>
42#include <sys/vdev.h>
43#include <sys/vdev_impl.h>
44#include <sys/metaslab_impl.h>
45#include <sys/dmu_objset.h>
46#include <sys/dsl_dir.h>
47#include <sys/dsl_dataset.h>
48#include <sys/dsl_pool.h>
49#include <sys/dbuf.h>
50#include <sys/zil.h>
51#include <sys/zil_impl.h>
52#include <sys/stat.h>
53#include <sys/resource.h>
54#include <sys/dmu_traverse.h>
55#include <sys/zio_checksum.h>
56#include <sys/zio_compress.h>
57#include <sys/zfs_fuid.h>
58#include <sys/arc.h>
59#include <sys/ddt.h>
60#include <sys/zfeature.h>
61#include <zfs_comutil.h>
62#undef ZFS_MAXNAMELEN
63#undef verify
64#include <libzfs.h>
65
66#define	ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?	\
67	zio_compress_table[(idx)].ci_name : "UNKNOWN")
68#define	ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?	\
69	zio_checksum_table[(idx)].ci_name : "UNKNOWN")
70#define	ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?	\
71	dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?	\
72	dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
73#define	ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :		\
74	(((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ?	\
75	DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
76
77#ifndef lint
78extern int zfs_recover;
79#else
80int zfs_recover;
81#endif
82
83const char cmdname[] = "zdb";
84uint8_t dump_opt[256];
85
86typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
87
88extern void dump_intent_log(zilog_t *);
89uint64_t *zopt_object = NULL;
90int zopt_objects = 0;
91libzfs_handle_t *g_zfs;
92uint64_t max_inflight = 200;
93
94/*
95 * These libumem hooks provide a reasonable set of defaults for the allocator's
96 * debugging facilities.
97 */
98const char *
99_umem_debug_init()
100{
101	return ("default,verbose"); /* $UMEM_DEBUG setting */
102}
103
104const char *
105_umem_logging_init(void)
106{
107	return ("fail,contents"); /* $UMEM_LOGGING setting */
108}
109
110static void
111usage(void)
112{
113	(void) fprintf(stderr,
114	    "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
115	    "[-U config] [-M inflight I/Os] poolname [object...]\n"
116	    "       %s [-divPA] [-e -p path...] [-U config] dataset "
117	    "[object...]\n"
118	    "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
119	    "poolname [vdev [metaslab...]]\n"
120	    "       %s -R [-A] [-e [-p path...]] poolname "
121	    "vdev:offset:size[:flags]\n"
122	    "       %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
123	    "       %s -l [-uA] device\n"
124	    "       %s -C [-A] [-U config]\n\n",
125	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
126
127	(void) fprintf(stderr, "    Dataset name must include at least one "
128	    "separator character '/' or '@'\n");
129	(void) fprintf(stderr, "    If dataset name is specified, only that "
130	    "dataset is dumped\n");
131	(void) fprintf(stderr, "    If object numbers are specified, only "
132	    "those objects are dumped\n\n");
133	(void) fprintf(stderr, "    Options to control amount of output:\n");
134	(void) fprintf(stderr, "        -u uberblock\n");
135	(void) fprintf(stderr, "        -d dataset(s)\n");
136	(void) fprintf(stderr, "        -i intent logs\n");
137	(void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
138	(void) fprintf(stderr, "        -h pool history\n");
139	(void) fprintf(stderr, "        -b block statistics\n");
140	(void) fprintf(stderr, "        -m metaslabs\n");
141	(void) fprintf(stderr, "        -c checksum all metadata (twice for "
142	    "all data) blocks\n");
143	(void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
144	(void) fprintf(stderr, "        -D dedup statistics\n");
145	(void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
146	(void) fprintf(stderr, "        -v verbose (applies to all others)\n");
147	(void) fprintf(stderr, "        -l dump label contents\n");
148	(void) fprintf(stderr, "        -L disable leak tracking (do not "
149	    "load spacemaps)\n");
150	(void) fprintf(stderr, "        -R read and display block from a "
151	    "device\n\n");
152	(void) fprintf(stderr, "    Below options are intended for use "
153	    "with other options (except -l):\n");
154	(void) fprintf(stderr, "        -A ignore assertions (-A), enable "
155	    "panic recovery (-AA) or both (-AAA)\n");
156	(void) fprintf(stderr, "        -F attempt automatic rewind within "
157	    "safe range of transaction groups\n");
158	(void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
159	    "cachefile\n");
160	(void) fprintf(stderr, "        -X attempt extreme rewind (does not "
161	    "work with dataset)\n");
162	(void) fprintf(stderr, "        -e pool is exported/destroyed/"
163	    "has altroot/not in a cachefile\n");
164	(void) fprintf(stderr, "        -p <path> -- use one or more with "
165	    "-e to specify path to vdev dir\n");
166	(void) fprintf(stderr, "        -P print numbers in parseable form\n");
167	(void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
168	    "searching for uberblocks\n");
169	(void) fprintf(stderr, "        -M <number of inflight I/Os> -- "
170	    "specify the maximum number of checksumming I/Os [default is 200]");
171	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
172	    "to make only that option verbose\n");
173	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
174	exit(1);
175}
176
177/*
178 * Called for usage errors that are discovered after a call to spa_open(),
179 * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
180 */
181
182static void
183fatal(const char *fmt, ...)
184{
185	va_list ap;
186
187	va_start(ap, fmt);
188	(void) fprintf(stderr, "%s: ", cmdname);
189	(void) vfprintf(stderr, fmt, ap);
190	va_end(ap);
191	(void) fprintf(stderr, "\n");
192
193	exit(1);
194}
195
196/* ARGSUSED */
197static void
198dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
199{
200	nvlist_t *nv;
201	size_t nvsize = *(uint64_t *)data;
202	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
203
204	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
205
206	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
207
208	umem_free(packed, nvsize);
209
210	dump_nvlist(nv, 8);
211
212	nvlist_free(nv);
213}
214
215/* ARGSUSED */
216static void
217dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
218{
219	spa_history_phys_t *shp = data;
220
221	if (shp == NULL)
222		return;
223
224	(void) printf("\t\tpool_create_len = %llu\n",
225	    (u_longlong_t)shp->sh_pool_create_len);
226	(void) printf("\t\tphys_max_off = %llu\n",
227	    (u_longlong_t)shp->sh_phys_max_off);
228	(void) printf("\t\tbof = %llu\n",
229	    (u_longlong_t)shp->sh_bof);
230	(void) printf("\t\teof = %llu\n",
231	    (u_longlong_t)shp->sh_eof);
232	(void) printf("\t\trecords_lost = %llu\n",
233	    (u_longlong_t)shp->sh_records_lost);
234}
235
236static void
237zdb_nicenum(uint64_t num, char *buf)
238{
239	if (dump_opt['P'])
240		(void) sprintf(buf, "%llu", (longlong_t)num);
241	else
242		nicenum(num, buf);
243}
244
245const char histo_stars[] = "****************************************";
246const int histo_width = sizeof (histo_stars) - 1;
247
248static void
249dump_histogram(const uint64_t *histo, int size)
250{
251	int i;
252	int minidx = size - 1;
253	int maxidx = 0;
254	uint64_t max = 0;
255
256	for (i = 0; i < size; i++) {
257		if (histo[i] > max)
258			max = histo[i];
259		if (histo[i] > 0 && i > maxidx)
260			maxidx = i;
261		if (histo[i] > 0 && i < minidx)
262			minidx = i;
263	}
264
265	if (max < histo_width)
266		max = histo_width;
267
268	for (i = minidx; i <= maxidx; i++) {
269		(void) printf("\t\t\t%3u: %6llu %s\n",
270		    i, (u_longlong_t)histo[i],
271		    &histo_stars[(max - histo[i]) * histo_width / max]);
272	}
273}
274
275static void
276dump_zap_stats(objset_t *os, uint64_t object)
277{
278	int error;
279	zap_stats_t zs;
280
281	error = zap_get_stats(os, object, &zs);
282	if (error)
283		return;
284
285	if (zs.zs_ptrtbl_len == 0) {
286		ASSERT(zs.zs_num_blocks == 1);
287		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
288		    (u_longlong_t)zs.zs_blocksize,
289		    (u_longlong_t)zs.zs_num_entries);
290		return;
291	}
292
293	(void) printf("\tFat ZAP stats:\n");
294
295	(void) printf("\t\tPointer table:\n");
296	(void) printf("\t\t\t%llu elements\n",
297	    (u_longlong_t)zs.zs_ptrtbl_len);
298	(void) printf("\t\t\tzt_blk: %llu\n",
299	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
300	(void) printf("\t\t\tzt_numblks: %llu\n",
301	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
302	(void) printf("\t\t\tzt_shift: %llu\n",
303	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
304	(void) printf("\t\t\tzt_blks_copied: %llu\n",
305	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
306	(void) printf("\t\t\tzt_nextblk: %llu\n",
307	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
308
309	(void) printf("\t\tZAP entries: %llu\n",
310	    (u_longlong_t)zs.zs_num_entries);
311	(void) printf("\t\tLeaf blocks: %llu\n",
312	    (u_longlong_t)zs.zs_num_leafs);
313	(void) printf("\t\tTotal blocks: %llu\n",
314	    (u_longlong_t)zs.zs_num_blocks);
315	(void) printf("\t\tzap_block_type: 0x%llx\n",
316	    (u_longlong_t)zs.zs_block_type);
317	(void) printf("\t\tzap_magic: 0x%llx\n",
318	    (u_longlong_t)zs.zs_magic);
319	(void) printf("\t\tzap_salt: 0x%llx\n",
320	    (u_longlong_t)zs.zs_salt);
321
322	(void) printf("\t\tLeafs with 2^n pointers:\n");
323	dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE);
324
325	(void) printf("\t\tBlocks with n*5 entries:\n");
326	dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE);
327
328	(void) printf("\t\tBlocks n/10 full:\n");
329	dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE);
330
331	(void) printf("\t\tEntries with n chunks:\n");
332	dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE);
333
334	(void) printf("\t\tBuckets with n entries:\n");
335	dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE);
336}
337
338/*ARGSUSED*/
339static void
340dump_none(objset_t *os, uint64_t object, void *data, size_t size)
341{
342}
343
344/*ARGSUSED*/
345static void
346dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
347{
348	(void) printf("\tUNKNOWN OBJECT TYPE\n");
349}
350
351/*ARGSUSED*/
352void
353dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
354{
355}
356
357/*ARGSUSED*/
358static void
359dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
360{
361}
362
363/*ARGSUSED*/
364static void
365dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
366{
367	zap_cursor_t zc;
368	zap_attribute_t attr;
369	void *prop;
370	int i;
371
372	dump_zap_stats(os, object);
373	(void) printf("\n");
374
375	for (zap_cursor_init(&zc, os, object);
376	    zap_cursor_retrieve(&zc, &attr) == 0;
377	    zap_cursor_advance(&zc)) {
378		(void) printf("\t\t%s = ", attr.za_name);
379		if (attr.za_num_integers == 0) {
380			(void) printf("\n");
381			continue;
382		}
383		prop = umem_zalloc(attr.za_num_integers *
384		    attr.za_integer_length, UMEM_NOFAIL);
385		(void) zap_lookup(os, object, attr.za_name,
386		    attr.za_integer_length, attr.za_num_integers, prop);
387		if (attr.za_integer_length == 1) {
388			(void) printf("%s", (char *)prop);
389		} else {
390			for (i = 0; i < attr.za_num_integers; i++) {
391				switch (attr.za_integer_length) {
392				case 2:
393					(void) printf("%u ",
394					    ((uint16_t *)prop)[i]);
395					break;
396				case 4:
397					(void) printf("%u ",
398					    ((uint32_t *)prop)[i]);
399					break;
400				case 8:
401					(void) printf("%lld ",
402					    (u_longlong_t)((int64_t *)prop)[i]);
403					break;
404				}
405			}
406		}
407		(void) printf("\n");
408		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
409	}
410	zap_cursor_fini(&zc);
411}
412
413/*ARGSUSED*/
414static void
415dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
416{
417	dump_zap_stats(os, object);
418	/* contents are printed elsewhere, properly decoded */
419}
420
421/*ARGSUSED*/
422static void
423dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
424{
425	zap_cursor_t zc;
426	zap_attribute_t attr;
427
428	dump_zap_stats(os, object);
429	(void) printf("\n");
430
431	for (zap_cursor_init(&zc, os, object);
432	    zap_cursor_retrieve(&zc, &attr) == 0;
433	    zap_cursor_advance(&zc)) {
434		(void) printf("\t\t%s = ", attr.za_name);
435		if (attr.za_num_integers == 0) {
436			(void) printf("\n");
437			continue;
438		}
439		(void) printf(" %llx : [%d:%d:%d]\n",
440		    (u_longlong_t)attr.za_first_integer,
441		    (int)ATTR_LENGTH(attr.za_first_integer),
442		    (int)ATTR_BSWAP(attr.za_first_integer),
443		    (int)ATTR_NUM(attr.za_first_integer));
444	}
445	zap_cursor_fini(&zc);
446}
447
448/*ARGSUSED*/
449static void
450dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
451{
452	zap_cursor_t zc;
453	zap_attribute_t attr;
454	uint16_t *layout_attrs;
455	int i;
456
457	dump_zap_stats(os, object);
458	(void) printf("\n");
459
460	for (zap_cursor_init(&zc, os, object);
461	    zap_cursor_retrieve(&zc, &attr) == 0;
462	    zap_cursor_advance(&zc)) {
463		(void) printf("\t\t%s = [", attr.za_name);
464		if (attr.za_num_integers == 0) {
465			(void) printf("\n");
466			continue;
467		}
468
469		VERIFY(attr.za_integer_length == 2);
470		layout_attrs = umem_zalloc(attr.za_num_integers *
471		    attr.za_integer_length, UMEM_NOFAIL);
472
473		VERIFY(zap_lookup(os, object, attr.za_name,
474		    attr.za_integer_length,
475		    attr.za_num_integers, layout_attrs) == 0);
476
477		for (i = 0; i != attr.za_num_integers; i++)
478			(void) printf(" %d ", (int)layout_attrs[i]);
479		(void) printf("]\n");
480		umem_free(layout_attrs,
481		    attr.za_num_integers * attr.za_integer_length);
482	}
483	zap_cursor_fini(&zc);
484}
485
486/*ARGSUSED*/
487static void
488dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
489{
490	zap_cursor_t zc;
491	zap_attribute_t attr;
492	const char *typenames[] = {
493		/* 0 */ "not specified",
494		/* 1 */ "FIFO",
495		/* 2 */ "Character Device",
496		/* 3 */ "3 (invalid)",
497		/* 4 */ "Directory",
498		/* 5 */ "5 (invalid)",
499		/* 6 */ "Block Device",
500		/* 7 */ "7 (invalid)",
501		/* 8 */ "Regular File",
502		/* 9 */ "9 (invalid)",
503		/* 10 */ "Symbolic Link",
504		/* 11 */ "11 (invalid)",
505		/* 12 */ "Socket",
506		/* 13 */ "Door",
507		/* 14 */ "Event Port",
508		/* 15 */ "15 (invalid)",
509	};
510
511	dump_zap_stats(os, object);
512	(void) printf("\n");
513
514	for (zap_cursor_init(&zc, os, object);
515	    zap_cursor_retrieve(&zc, &attr) == 0;
516	    zap_cursor_advance(&zc)) {
517		(void) printf("\t\t%s = %lld (type: %s)\n",
518		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
519		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
520	}
521	zap_cursor_fini(&zc);
522}
523
524static void
525dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
526{
527	uint64_t alloc, offset, entry;
528	uint8_t mapshift = sm->sm_shift;
529	uint64_t mapstart = sm->sm_start;
530	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
531			    "INVALID", "INVALID", "INVALID", "INVALID" };
532
533	if (smo->smo_object == 0)
534		return;
535
536	/*
537	 * Print out the freelist entries in both encoded and decoded form.
538	 */
539	alloc = 0;
540	for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
541		VERIFY3U(0, ==, dmu_read(os, smo->smo_object, offset,
542		    sizeof (entry), &entry, DMU_READ_PREFETCH));
543		if (SM_DEBUG_DECODE(entry)) {
544			(void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
545			    (u_longlong_t)(offset / sizeof (entry)),
546			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
547			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
548			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
549		} else {
550			(void) printf("\t    [%6llu]    %c  range:"
551			    " %010llx-%010llx  size: %06llx\n",
552			    (u_longlong_t)(offset / sizeof (entry)),
553			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
554			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
555			    mapshift) + mapstart),
556			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
557			    mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
558			    mapshift)),
559			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
560			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
561				alloc += SM_RUN_DECODE(entry) << mapshift;
562			else
563				alloc -= SM_RUN_DECODE(entry) << mapshift;
564		}
565	}
566	if (alloc != smo->smo_alloc) {
567		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
568		    "with space map summary (%llu)\n",
569		    (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
570	}
571}
572
573static void
574dump_metaslab_stats(metaslab_t *msp)
575{
576	char maxbuf[32];
577	space_map_t *sm = msp->ms_map;
578	avl_tree_t *t = sm->sm_pp_root;
579	int free_pct = sm->sm_space * 100 / sm->sm_size;
580
581	zdb_nicenum(space_map_maxsize(sm), maxbuf);
582
583	(void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
584	    "segments", avl_numnodes(t), "maxsize", maxbuf,
585	    "freepct", free_pct);
586}
587
588static void
589dump_metaslab(metaslab_t *msp)
590{
591	vdev_t *vd = msp->ms_group->mg_vd;
592	spa_t *spa = vd->vdev_spa;
593	space_map_t *sm = msp->ms_map;
594	space_map_obj_t *smo = &msp->ms_smo;
595	char freebuf[32];
596
597	zdb_nicenum(sm->sm_size - smo->smo_alloc, freebuf);
598
599	(void) printf(
600	    "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
601	    (u_longlong_t)(sm->sm_start / sm->sm_size),
602	    (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
603
604	if (dump_opt['m'] > 1 && !dump_opt['L']) {
605		mutex_enter(&msp->ms_lock);
606		space_map_load_wait(sm);
607		if (!sm->sm_loaded)
608			VERIFY(space_map_load(sm, zfs_metaslab_ops,
609			    SM_FREE, smo, spa->spa_meta_objset) == 0);
610		dump_metaslab_stats(msp);
611		space_map_unload(sm);
612		mutex_exit(&msp->ms_lock);
613	}
614
615	if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
616		ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
617
618		mutex_enter(&msp->ms_lock);
619		dump_spacemap(spa->spa_meta_objset, smo, sm);
620		mutex_exit(&msp->ms_lock);
621	}
622}
623
624static void
625print_vdev_metaslab_header(vdev_t *vd)
626{
627	(void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
628	    (u_longlong_t)vd->vdev_id,
629	    "metaslabs", (u_longlong_t)vd->vdev_ms_count,
630	    "offset", "spacemap", "free");
631	(void) printf("\t%15s   %19s   %15s   %10s\n",
632	    "---------------", "-------------------",
633	    "---------------", "-------------");
634}
635
636static void
637dump_metaslabs(spa_t *spa)
638{
639	vdev_t *vd, *rvd = spa->spa_root_vdev;
640	uint64_t m, c = 0, children = rvd->vdev_children;
641
642	(void) printf("\nMetaslabs:\n");
643
644	if (!dump_opt['d'] && zopt_objects > 0) {
645		c = zopt_object[0];
646
647		if (c >= children)
648			(void) fatal("bad vdev id: %llu", (u_longlong_t)c);
649
650		if (zopt_objects > 1) {
651			vd = rvd->vdev_child[c];
652			print_vdev_metaslab_header(vd);
653
654			for (m = 1; m < zopt_objects; m++) {
655				if (zopt_object[m] < vd->vdev_ms_count)
656					dump_metaslab(
657					    vd->vdev_ms[zopt_object[m]]);
658				else
659					(void) fprintf(stderr, "bad metaslab "
660					    "number %llu\n",
661					    (u_longlong_t)zopt_object[m]);
662			}
663			(void) printf("\n");
664			return;
665		}
666		children = c + 1;
667	}
668	for (; c < children; c++) {
669		vd = rvd->vdev_child[c];
670		print_vdev_metaslab_header(vd);
671
672		for (m = 0; m < vd->vdev_ms_count; m++)
673			dump_metaslab(vd->vdev_ms[m]);
674		(void) printf("\n");
675	}
676}
677
678static void
679dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
680{
681	const ddt_phys_t *ddp = dde->dde_phys;
682	const ddt_key_t *ddk = &dde->dde_key;
683	char *types[4] = { "ditto", "single", "double", "triple" };
684	char blkbuf[BP_SPRINTF_LEN];
685	blkptr_t blk;
686
687	for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
688		if (ddp->ddp_phys_birth == 0)
689			continue;
690		ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
691		sprintf_blkptr(blkbuf, &blk);
692		(void) printf("index %llx refcnt %llu %s %s\n",
693		    (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
694		    types[p], blkbuf);
695	}
696}
697
698static void
699dump_dedup_ratio(const ddt_stat_t *dds)
700{
701	double rL, rP, rD, D, dedup, compress, copies;
702
703	if (dds->dds_blocks == 0)
704		return;
705
706	rL = (double)dds->dds_ref_lsize;
707	rP = (double)dds->dds_ref_psize;
708	rD = (double)dds->dds_ref_dsize;
709	D = (double)dds->dds_dsize;
710
711	dedup = rD / D;
712	compress = rL / rP;
713	copies = rD / rP;
714
715	(void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
716	    "dedup * compress / copies = %.2f\n\n",
717	    dedup, compress, copies, dedup * compress / copies);
718}
719
720static void
721dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
722{
723	char name[DDT_NAMELEN];
724	ddt_entry_t dde;
725	uint64_t walk = 0;
726	dmu_object_info_t doi;
727	uint64_t count, dspace, mspace;
728	int error;
729
730	error = ddt_object_info(ddt, type, class, &doi);
731
732	if (error == ENOENT)
733		return;
734	ASSERT(error == 0);
735
736	if ((count = ddt_object_count(ddt, type, class)) == 0)
737		return;
738
739	dspace = doi.doi_physical_blocks_512 << 9;
740	mspace = doi.doi_fill_count * doi.doi_data_block_size;
741
742	ddt_object_name(ddt, type, class, name);
743
744	(void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
745	    name,
746	    (u_longlong_t)count,
747	    (u_longlong_t)(dspace / count),
748	    (u_longlong_t)(mspace / count));
749
750	if (dump_opt['D'] < 3)
751		return;
752
753	zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
754
755	if (dump_opt['D'] < 4)
756		return;
757
758	if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
759		return;
760
761	(void) printf("%s contents:\n\n", name);
762
763	while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
764		dump_dde(ddt, &dde, walk);
765
766	ASSERT(error == ENOENT);
767
768	(void) printf("\n");
769}
770
771static void
772dump_all_ddts(spa_t *spa)
773{
774	ddt_histogram_t ddh_total = { 0 };
775	ddt_stat_t dds_total = { 0 };
776
777	for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
778		ddt_t *ddt = spa->spa_ddt[c];
779		for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
780			for (enum ddt_class class = 0; class < DDT_CLASSES;
781			    class++) {
782				dump_ddt(ddt, type, class);
783			}
784		}
785	}
786
787	ddt_get_dedup_stats(spa, &dds_total);
788
789	if (dds_total.dds_blocks == 0) {
790		(void) printf("All DDTs are empty\n");
791		return;
792	}
793
794	(void) printf("\n");
795
796	if (dump_opt['D'] > 1) {
797		(void) printf("DDT histogram (aggregated over all DDTs):\n");
798		ddt_get_dedup_histogram(spa, &ddh_total);
799		zpool_dump_ddt(&dds_total, &ddh_total);
800	}
801
802	dump_dedup_ratio(&dds_total);
803}
804
805static void
806dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
807{
808	char *prefix = (void *)sm;
809
810	(void) printf("%s [%llu,%llu) length %llu\n",
811	    prefix,
812	    (u_longlong_t)start,
813	    (u_longlong_t)(start + size),
814	    (u_longlong_t)(size));
815}
816
817static void
818dump_dtl(vdev_t *vd, int indent)
819{
820	spa_t *spa = vd->vdev_spa;
821	boolean_t required;
822	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
823	char prefix[256];
824
825	spa_vdev_state_enter(spa, SCL_NONE);
826	required = vdev_dtl_required(vd);
827	(void) spa_vdev_state_exit(spa, NULL, 0);
828
829	if (indent == 0)
830		(void) printf("\nDirty time logs:\n\n");
831
832	(void) printf("\t%*s%s [%s]\n", indent, "",
833	    vd->vdev_path ? vd->vdev_path :
834	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
835	    required ? "DTL-required" : "DTL-expendable");
836
837	for (int t = 0; t < DTL_TYPES; t++) {
838		space_map_t *sm = &vd->vdev_dtl[t];
839		if (sm->sm_space == 0)
840			continue;
841		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
842		    indent + 2, "", name[t]);
843		mutex_enter(sm->sm_lock);
844		space_map_walk(sm, dump_dtl_seg, (void *)prefix);
845		mutex_exit(sm->sm_lock);
846		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
847			dump_spacemap(spa->spa_meta_objset,
848			    &vd->vdev_dtl_smo, sm);
849	}
850
851	for (int c = 0; c < vd->vdev_children; c++)
852		dump_dtl(vd->vdev_child[c], indent + 4);
853}
854
855static void
856dump_history(spa_t *spa)
857{
858	nvlist_t **events = NULL;
859	char buf[SPA_MAXBLOCKSIZE];
860	uint64_t resid, len, off = 0;
861	uint_t num = 0;
862	int error;
863	time_t tsec;
864	struct tm t;
865	char tbuf[30];
866	char internalstr[MAXPATHLEN];
867
868	do {
869		len = sizeof (buf);
870
871		if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
872			(void) fprintf(stderr, "Unable to read history: "
873			    "error %d\n", error);
874			return;
875		}
876
877		if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
878			break;
879
880		off -= resid;
881	} while (len != 0);
882
883	(void) printf("\nHistory:\n");
884	for (int i = 0; i < num; i++) {
885		uint64_t time, txg, ievent;
886		char *cmd, *intstr;
887		boolean_t printed = B_FALSE;
888
889		if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
890		    &time) != 0)
891			goto next;
892		if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
893		    &cmd) != 0) {
894			if (nvlist_lookup_uint64(events[i],
895			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
896				goto next;
897			verify(nvlist_lookup_uint64(events[i],
898			    ZPOOL_HIST_TXG, &txg) == 0);
899			verify(nvlist_lookup_string(events[i],
900			    ZPOOL_HIST_INT_STR, &intstr) == 0);
901			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
902				goto next;
903
904			(void) snprintf(internalstr,
905			    sizeof (internalstr),
906			    "[internal %s txg:%lld] %s",
907			    zfs_history_event_names[ievent], txg,
908			    intstr);
909			cmd = internalstr;
910		}
911		tsec = time;
912		(void) localtime_r(&tsec, &t);
913		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
914		(void) printf("%s %s\n", tbuf, cmd);
915		printed = B_TRUE;
916
917next:
918		if (dump_opt['h'] > 1) {
919			if (!printed)
920				(void) printf("unrecognized record:\n");
921			dump_nvlist(events[i], 2);
922		}
923	}
924}
925
926/*ARGSUSED*/
927static void
928dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
929{
930}
931
932static uint64_t
933blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
934{
935	if (dnp == NULL) {
936		ASSERT(zb->zb_level < 0);
937		if (zb->zb_object == 0)
938			return (zb->zb_blkid);
939		return (zb->zb_blkid * BP_GET_LSIZE(bp));
940	}
941
942	ASSERT(zb->zb_level >= 0);
943
944	return ((zb->zb_blkid <<
945	    (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
946	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
947}
948
949static void
950sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
951{
952	const dva_t *dva = bp->blk_dva;
953	int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
954
955	if (dump_opt['b'] >= 6) {
956		sprintf_blkptr(blkbuf, bp);
957		return;
958	}
959
960	blkbuf[0] = '\0';
961
962	for (int i = 0; i < ndvas; i++)
963		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
964		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
965		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
966		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
967
968	(void) sprintf(blkbuf + strlen(blkbuf),
969	    "%llxL/%llxP F=%llu B=%llu/%llu",
970	    (u_longlong_t)BP_GET_LSIZE(bp),
971	    (u_longlong_t)BP_GET_PSIZE(bp),
972	    (u_longlong_t)bp->blk_fill,
973	    (u_longlong_t)bp->blk_birth,
974	    (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
975}
976
977static void
978print_indirect(blkptr_t *bp, const zbookmark_t *zb,
979    const dnode_phys_t *dnp)
980{
981	char blkbuf[BP_SPRINTF_LEN];
982	int l;
983
984	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
985	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
986
987	(void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
988
989	ASSERT(zb->zb_level >= 0);
990
991	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
992		if (l == zb->zb_level) {
993			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
994		} else {
995			(void) printf(" ");
996		}
997	}
998
999	sprintf_blkptr_compact(blkbuf, bp);
1000	(void) printf("%s\n", blkbuf);
1001}
1002
1003static int
1004visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1005    blkptr_t *bp, const zbookmark_t *zb)
1006{
1007	int err = 0;
1008
1009	if (bp->blk_birth == 0)
1010		return (0);
1011
1012	print_indirect(bp, zb, dnp);
1013
1014	if (BP_GET_LEVEL(bp) > 0) {
1015		uint32_t flags = ARC_WAIT;
1016		int i;
1017		blkptr_t *cbp;
1018		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1019		arc_buf_t *buf;
1020		uint64_t fill = 0;
1021
1022		err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1023		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1024		if (err)
1025			return (err);
1026		ASSERT(buf->b_data);
1027
1028		/* recursively visit blocks below this */
1029		cbp = buf->b_data;
1030		for (i = 0; i < epb; i++, cbp++) {
1031			zbookmark_t czb;
1032
1033			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1034			    zb->zb_level - 1,
1035			    zb->zb_blkid * epb + i);
1036			err = visit_indirect(spa, dnp, cbp, &czb);
1037			if (err)
1038				break;
1039			fill += cbp->blk_fill;
1040		}
1041		if (!err)
1042			ASSERT3U(fill, ==, bp->blk_fill);
1043		(void) arc_buf_remove_ref(buf, &buf);
1044	}
1045
1046	return (err);
1047}
1048
1049/*ARGSUSED*/
1050static void
1051dump_indirect(dnode_t *dn)
1052{
1053	dnode_phys_t *dnp = dn->dn_phys;
1054	int j;
1055	zbookmark_t czb;
1056
1057	(void) printf("Indirect blocks:\n");
1058
1059	SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1060	    dn->dn_object, dnp->dn_nlevels - 1, 0);
1061	for (j = 0; j < dnp->dn_nblkptr; j++) {
1062		czb.zb_blkid = j;
1063		(void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1064		    &dnp->dn_blkptr[j], &czb);
1065	}
1066
1067	(void) printf("\n");
1068}
1069
1070/*ARGSUSED*/
1071static void
1072dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1073{
1074	dsl_dir_phys_t *dd = data;
1075	time_t crtime;
1076	char nice[32];
1077
1078	if (dd == NULL)
1079		return;
1080
1081	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1082
1083	crtime = dd->dd_creation_time;
1084	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1085	(void) printf("\t\thead_dataset_obj = %llu\n",
1086	    (u_longlong_t)dd->dd_head_dataset_obj);
1087	(void) printf("\t\tparent_dir_obj = %llu\n",
1088	    (u_longlong_t)dd->dd_parent_obj);
1089	(void) printf("\t\torigin_obj = %llu\n",
1090	    (u_longlong_t)dd->dd_origin_obj);
1091	(void) printf("\t\tchild_dir_zapobj = %llu\n",
1092	    (u_longlong_t)dd->dd_child_dir_zapobj);
1093	zdb_nicenum(dd->dd_used_bytes, nice);
1094	(void) printf("\t\tused_bytes = %s\n", nice);
1095	zdb_nicenum(dd->dd_compressed_bytes, nice);
1096	(void) printf("\t\tcompressed_bytes = %s\n", nice);
1097	zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1098	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
1099	zdb_nicenum(dd->dd_quota, nice);
1100	(void) printf("\t\tquota = %s\n", nice);
1101	zdb_nicenum(dd->dd_reserved, nice);
1102	(void) printf("\t\treserved = %s\n", nice);
1103	(void) printf("\t\tprops_zapobj = %llu\n",
1104	    (u_longlong_t)dd->dd_props_zapobj);
1105	(void) printf("\t\tdeleg_zapobj = %llu\n",
1106	    (u_longlong_t)dd->dd_deleg_zapobj);
1107	(void) printf("\t\tflags = %llx\n",
1108	    (u_longlong_t)dd->dd_flags);
1109
1110#define	DO(which) \
1111	zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1112	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1113	DO(HEAD);
1114	DO(SNAP);
1115	DO(CHILD);
1116	DO(CHILD_RSRV);
1117	DO(REFRSRV);
1118#undef DO
1119}
1120
1121/*ARGSUSED*/
1122static void
1123dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1124{
1125	dsl_dataset_phys_t *ds = data;
1126	time_t crtime;
1127	char used[32], compressed[32], uncompressed[32], unique[32];
1128	char blkbuf[BP_SPRINTF_LEN];
1129
1130	if (ds == NULL)
1131		return;
1132
1133	ASSERT(size == sizeof (*ds));
1134	crtime = ds->ds_creation_time;
1135	zdb_nicenum(ds->ds_referenced_bytes, used);
1136	zdb_nicenum(ds->ds_compressed_bytes, compressed);
1137	zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1138	zdb_nicenum(ds->ds_unique_bytes, unique);
1139	sprintf_blkptr(blkbuf, &ds->ds_bp);
1140
1141	(void) printf("\t\tdir_obj = %llu\n",
1142	    (u_longlong_t)ds->ds_dir_obj);
1143	(void) printf("\t\tprev_snap_obj = %llu\n",
1144	    (u_longlong_t)ds->ds_prev_snap_obj);
1145	(void) printf("\t\tprev_snap_txg = %llu\n",
1146	    (u_longlong_t)ds->ds_prev_snap_txg);
1147	(void) printf("\t\tnext_snap_obj = %llu\n",
1148	    (u_longlong_t)ds->ds_next_snap_obj);
1149	(void) printf("\t\tsnapnames_zapobj = %llu\n",
1150	    (u_longlong_t)ds->ds_snapnames_zapobj);
1151	(void) printf("\t\tnum_children = %llu\n",
1152	    (u_longlong_t)ds->ds_num_children);
1153	(void) printf("\t\tuserrefs_obj = %llu\n",
1154	    (u_longlong_t)ds->ds_userrefs_obj);
1155	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1156	(void) printf("\t\tcreation_txg = %llu\n",
1157	    (u_longlong_t)ds->ds_creation_txg);
1158	(void) printf("\t\tdeadlist_obj = %llu\n",
1159	    (u_longlong_t)ds->ds_deadlist_obj);
1160	(void) printf("\t\tused_bytes = %s\n", used);
1161	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
1162	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1163	(void) printf("\t\tunique = %s\n", unique);
1164	(void) printf("\t\tfsid_guid = %llu\n",
1165	    (u_longlong_t)ds->ds_fsid_guid);
1166	(void) printf("\t\tguid = %llu\n",
1167	    (u_longlong_t)ds->ds_guid);
1168	(void) printf("\t\tflags = %llx\n",
1169	    (u_longlong_t)ds->ds_flags);
1170	(void) printf("\t\tnext_clones_obj = %llu\n",
1171	    (u_longlong_t)ds->ds_next_clones_obj);
1172	(void) printf("\t\tprops_obj = %llu\n",
1173	    (u_longlong_t)ds->ds_props_obj);
1174	(void) printf("\t\tbp = %s\n", blkbuf);
1175}
1176
1177/* ARGSUSED */
1178static int
1179dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1180{
1181	char blkbuf[BP_SPRINTF_LEN];
1182
1183	if (bp->blk_birth != 0) {
1184		sprintf_blkptr(blkbuf, bp);
1185		(void) printf("\t%s\n", blkbuf);
1186	}
1187	return (0);
1188}
1189
1190static void
1191dump_bptree(objset_t *os, uint64_t obj, char *name)
1192{
1193	char bytes[32];
1194	bptree_phys_t *bt;
1195	dmu_buf_t *db;
1196
1197	if (dump_opt['d'] < 3)
1198		return;
1199
1200	VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1201	bt = db->db_data;
1202	zdb_nicenum(bt->bt_bytes, bytes);
1203	(void) printf("\n    %s: %llu datasets, %s\n",
1204	    name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1205	dmu_buf_rele(db, FTAG);
1206
1207	if (dump_opt['d'] < 5)
1208		return;
1209
1210	(void) printf("\n");
1211
1212	(void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1213}
1214
1215/* ARGSUSED */
1216static int
1217dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1218{
1219	char blkbuf[BP_SPRINTF_LEN];
1220
1221	ASSERT(bp->blk_birth != 0);
1222	sprintf_blkptr_compact(blkbuf, bp);
1223	(void) printf("\t%s\n", blkbuf);
1224	return (0);
1225}
1226
1227static void
1228dump_bpobj(bpobj_t *bpo, char *name, int indent)
1229{
1230	char bytes[32];
1231	char comp[32];
1232	char uncomp[32];
1233
1234	if (dump_opt['d'] < 3)
1235		return;
1236
1237	zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1238	if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1239		zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1240		zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1241		(void) printf("    %*s: object %llu, %llu local blkptrs, "
1242		    "%llu subobjs, %s (%s/%s comp)\n",
1243		    indent * 8, name,
1244		    (u_longlong_t)bpo->bpo_object,
1245		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1246		    (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1247		    bytes, comp, uncomp);
1248
1249		for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1250			uint64_t subobj;
1251			bpobj_t subbpo;
1252			int error;
1253			VERIFY0(dmu_read(bpo->bpo_os,
1254			    bpo->bpo_phys->bpo_subobjs,
1255			    i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1256			error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1257			if (error != 0) {
1258				(void) printf("ERROR %u while trying to open "
1259				    "subobj id %llu\n",
1260				    error, (u_longlong_t)subobj);
1261				continue;
1262			}
1263			dump_bpobj(&subbpo, "subobj", indent + 1);
1264			bpobj_close(&subbpo);
1265		}
1266	} else {
1267		(void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1268		    indent * 8, name,
1269		    (u_longlong_t)bpo->bpo_object,
1270		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1271		    bytes);
1272	}
1273
1274	if (dump_opt['d'] < 5)
1275		return;
1276
1277
1278	if (indent == 0) {
1279		(void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1280		(void) printf("\n");
1281	}
1282}
1283
1284static void
1285dump_deadlist(dsl_deadlist_t *dl)
1286{
1287	dsl_deadlist_entry_t *dle;
1288	uint64_t unused;
1289	char bytes[32];
1290	char comp[32];
1291	char uncomp[32];
1292
1293	if (dump_opt['d'] < 3)
1294		return;
1295
1296	zdb_nicenum(dl->dl_phys->dl_used, bytes);
1297	zdb_nicenum(dl->dl_phys->dl_comp, comp);
1298	zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1299	(void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1300	    bytes, comp, uncomp);
1301
1302	if (dump_opt['d'] < 4)
1303		return;
1304
1305	(void) printf("\n");
1306
1307	/* force the tree to be loaded */
1308	dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1309
1310	for (dle = avl_first(&dl->dl_tree); dle;
1311	    dle = AVL_NEXT(&dl->dl_tree, dle)) {
1312		if (dump_opt['d'] >= 5) {
1313			char buf[128];
1314			(void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1315			    (longlong_t)dle->dle_mintxg,
1316			    (longlong_t)dle->dle_bpobj.bpo_object);
1317
1318			dump_bpobj(&dle->dle_bpobj, buf, 0);
1319		} else {
1320			(void) printf("mintxg %llu -> obj %llu\n",
1321			    (longlong_t)dle->dle_mintxg,
1322			    (longlong_t)dle->dle_bpobj.bpo_object);
1323
1324		}
1325	}
1326}
1327
1328static avl_tree_t idx_tree;
1329static avl_tree_t domain_tree;
1330static boolean_t fuid_table_loaded;
1331static boolean_t sa_loaded;
1332sa_attr_type_t *sa_attr_table;
1333
1334static void
1335fuid_table_destroy()
1336{
1337	if (fuid_table_loaded) {
1338		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1339		fuid_table_loaded = B_FALSE;
1340	}
1341}
1342
1343/*
1344 * print uid or gid information.
1345 * For normal POSIX id just the id is printed in decimal format.
1346 * For CIFS files with FUID the fuid is printed in hex followed by
1347 * the domain-rid string.
1348 */
1349static void
1350print_idstr(uint64_t id, const char *id_type)
1351{
1352	if (FUID_INDEX(id)) {
1353		char *domain;
1354
1355		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1356		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
1357		    (u_longlong_t)id, domain, (int)FUID_RID(id));
1358	} else {
1359		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1360	}
1361
1362}
1363
1364static void
1365dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1366{
1367	uint32_t uid_idx, gid_idx;
1368
1369	uid_idx = FUID_INDEX(uid);
1370	gid_idx = FUID_INDEX(gid);
1371
1372	/* Load domain table, if not already loaded */
1373	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1374		uint64_t fuid_obj;
1375
1376		/* first find the fuid object.  It lives in the master node */
1377		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1378		    8, 1, &fuid_obj) == 0);
1379		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1380		(void) zfs_fuid_table_load(os, fuid_obj,
1381		    &idx_tree, &domain_tree);
1382		fuid_table_loaded = B_TRUE;
1383	}
1384
1385	print_idstr(uid, "uid");
1386	print_idstr(gid, "gid");
1387}
1388
1389/*ARGSUSED*/
1390static void
1391dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1392{
1393	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
1394	sa_handle_t *hdl;
1395	uint64_t xattr, rdev, gen;
1396	uint64_t uid, gid, mode, fsize, parent, links;
1397	uint64_t pflags;
1398	uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1399	time_t z_crtime, z_atime, z_mtime, z_ctime;
1400	sa_bulk_attr_t bulk[12];
1401	int idx = 0;
1402	int error;
1403
1404	if (!sa_loaded) {
1405		uint64_t sa_attrs = 0;
1406		uint64_t version;
1407
1408		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1409		    8, 1, &version) == 0);
1410		if (version >= ZPL_VERSION_SA) {
1411			VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1412			    8, 1, &sa_attrs) == 0);
1413		}
1414		if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1415		    ZPL_END, &sa_attr_table)) != 0) {
1416			(void) printf("sa_setup failed errno %d, can't "
1417			    "display znode contents\n", error);
1418			return;
1419		}
1420		sa_loaded = B_TRUE;
1421	}
1422
1423	if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1424		(void) printf("Failed to get handle for SA znode\n");
1425		return;
1426	}
1427
1428	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1429	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1430	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1431	    &links, 8);
1432	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1433	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1434	    &mode, 8);
1435	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1436	    NULL, &parent, 8);
1437	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1438	    &fsize, 8);
1439	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1440	    acctm, 16);
1441	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1442	    modtm, 16);
1443	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1444	    crtm, 16);
1445	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1446	    chgtm, 16);
1447	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1448	    &pflags, 8);
1449
1450	if (sa_bulk_lookup(hdl, bulk, idx)) {
1451		(void) sa_handle_destroy(hdl);
1452		return;
1453	}
1454
1455	error = zfs_obj_to_path(os, object, path, sizeof (path));
1456	if (error != 0) {
1457		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1458		    (u_longlong_t)object);
1459	}
1460	if (dump_opt['d'] < 3) {
1461		(void) printf("\t%s\n", path);
1462		(void) sa_handle_destroy(hdl);
1463		return;
1464	}
1465
1466	z_crtime = (time_t)crtm[0];
1467	z_atime = (time_t)acctm[0];
1468	z_mtime = (time_t)modtm[0];
1469	z_ctime = (time_t)chgtm[0];
1470
1471	(void) printf("\tpath	%s\n", path);
1472	dump_uidgid(os, uid, gid);
1473	(void) printf("\tatime	%s", ctime(&z_atime));
1474	(void) printf("\tmtime	%s", ctime(&z_mtime));
1475	(void) printf("\tctime	%s", ctime(&z_ctime));
1476	(void) printf("\tcrtime	%s", ctime(&z_crtime));
1477	(void) printf("\tgen	%llu\n", (u_longlong_t)gen);
1478	(void) printf("\tmode	%llo\n", (u_longlong_t)mode);
1479	(void) printf("\tsize	%llu\n", (u_longlong_t)fsize);
1480	(void) printf("\tparent	%llu\n", (u_longlong_t)parent);
1481	(void) printf("\tlinks	%llu\n", (u_longlong_t)links);
1482	(void) printf("\tpflags	%llx\n", (u_longlong_t)pflags);
1483	if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1484	    sizeof (uint64_t)) == 0)
1485		(void) printf("\txattr	%llu\n", (u_longlong_t)xattr);
1486	if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1487	    sizeof (uint64_t)) == 0)
1488		(void) printf("\trdev	0x%016llx\n", (u_longlong_t)rdev);
1489	sa_handle_destroy(hdl);
1490}
1491
1492/*ARGSUSED*/
1493static void
1494dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1495{
1496}
1497
1498/*ARGSUSED*/
1499static void
1500dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1501{
1502}
1503
1504static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1505	dump_none,		/* unallocated			*/
1506	dump_zap,		/* object directory		*/
1507	dump_uint64,		/* object array			*/
1508	dump_none,		/* packed nvlist		*/
1509	dump_packed_nvlist,	/* packed nvlist size		*/
1510	dump_none,		/* bplist			*/
1511	dump_none,		/* bplist header		*/
1512	dump_none,		/* SPA space map header		*/
1513	dump_none,		/* SPA space map		*/
1514	dump_none,		/* ZIL intent log		*/
1515	dump_dnode,		/* DMU dnode			*/
1516	dump_dmu_objset,	/* DMU objset			*/
1517	dump_dsl_dir,		/* DSL directory		*/
1518	dump_zap,		/* DSL directory child map	*/
1519	dump_zap,		/* DSL dataset snap map		*/
1520	dump_zap,		/* DSL props			*/
1521	dump_dsl_dataset,	/* DSL dataset			*/
1522	dump_znode,		/* ZFS znode			*/
1523	dump_acl,		/* ZFS V0 ACL			*/
1524	dump_uint8,		/* ZFS plain file		*/
1525	dump_zpldir,		/* ZFS directory		*/
1526	dump_zap,		/* ZFS master node		*/
1527	dump_zap,		/* ZFS delete queue		*/
1528	dump_uint8,		/* zvol object			*/
1529	dump_zap,		/* zvol prop			*/
1530	dump_uint8,		/* other uint8[]		*/
1531	dump_uint64,		/* other uint64[]		*/
1532	dump_zap,		/* other ZAP			*/
1533	dump_zap,		/* persistent error log		*/
1534	dump_uint8,		/* SPA history			*/
1535	dump_history_offsets,	/* SPA history offsets		*/
1536	dump_zap,		/* Pool properties		*/
1537	dump_zap,		/* DSL permissions		*/
1538	dump_acl,		/* ZFS ACL			*/
1539	dump_uint8,		/* ZFS SYSACL			*/
1540	dump_none,		/* FUID nvlist			*/
1541	dump_packed_nvlist,	/* FUID nvlist size		*/
1542	dump_zap,		/* DSL dataset next clones	*/
1543	dump_zap,		/* DSL scrub queue		*/
1544	dump_zap,		/* ZFS user/group used		*/
1545	dump_zap,		/* ZFS user/group quota		*/
1546	dump_zap,		/* snapshot refcount tags	*/
1547	dump_ddt_zap,		/* DDT ZAP object		*/
1548	dump_zap,		/* DDT statistics		*/
1549	dump_znode,		/* SA object			*/
1550	dump_zap,		/* SA Master Node		*/
1551	dump_sa_attrs,		/* SA attribute registration	*/
1552	dump_sa_layouts,	/* SA attribute layouts		*/
1553	dump_zap,		/* DSL scrub translations	*/
1554	dump_none,		/* fake dedup BP		*/
1555	dump_zap,		/* deadlist			*/
1556	dump_none,		/* deadlist hdr			*/
1557	dump_zap,		/* dsl clones			*/
1558	dump_none,		/* bpobj subobjs		*/
1559	dump_unknown,		/* Unknown type, must be last	*/
1560};
1561
1562static void
1563dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1564{
1565	dmu_buf_t *db = NULL;
1566	dmu_object_info_t doi;
1567	dnode_t *dn;
1568	void *bonus = NULL;
1569	size_t bsize = 0;
1570	char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1571	char bonus_size[32];
1572	char aux[50];
1573	int error;
1574
1575	if (*print_header) {
1576		(void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1577		    "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1578		    "%full", "type");
1579		*print_header = 0;
1580	}
1581
1582	if (object == 0) {
1583		dn = DMU_META_DNODE(os);
1584	} else {
1585		error = dmu_bonus_hold(os, object, FTAG, &db);
1586		if (error)
1587			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1588			    object, error);
1589		bonus = db->db_data;
1590		bsize = db->db_size;
1591		dn = DB_DNODE((dmu_buf_impl_t *)db);
1592	}
1593	dmu_object_info_from_dnode(dn, &doi);
1594
1595	zdb_nicenum(doi.doi_metadata_block_size, iblk);
1596	zdb_nicenum(doi.doi_data_block_size, dblk);
1597	zdb_nicenum(doi.doi_max_offset, lsize);
1598	zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1599	zdb_nicenum(doi.doi_bonus_size, bonus_size);
1600	(void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1601	    doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1602	    doi.doi_max_offset);
1603
1604	aux[0] = '\0';
1605
1606	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1607		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1608		    ZDB_CHECKSUM_NAME(doi.doi_checksum));
1609	}
1610
1611	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1612		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1613		    ZDB_COMPRESS_NAME(doi.doi_compress));
1614	}
1615
1616	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1617	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1618	    asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1619
1620	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1621		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1622		    "", "", "", "", "", bonus_size, "bonus",
1623		    ZDB_OT_NAME(doi.doi_bonus_type));
1624	}
1625
1626	if (verbosity >= 4) {
1627		(void) printf("\tdnode flags: %s%s%s\n",
1628		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1629		    "USED_BYTES " : "",
1630		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1631		    "USERUSED_ACCOUNTED " : "",
1632		    (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1633		    "SPILL_BLKPTR" : "");
1634		(void) printf("\tdnode maxblkid: %llu\n",
1635		    (longlong_t)dn->dn_phys->dn_maxblkid);
1636
1637		object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1638		    bonus, bsize);
1639		object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1640		*print_header = 1;
1641	}
1642
1643	if (verbosity >= 5)
1644		dump_indirect(dn);
1645
1646	if (verbosity >= 5) {
1647		/*
1648		 * Report the list of segments that comprise the object.
1649		 */
1650		uint64_t start = 0;
1651		uint64_t end;
1652		uint64_t blkfill = 1;
1653		int minlvl = 1;
1654
1655		if (dn->dn_type == DMU_OT_DNODE) {
1656			minlvl = 0;
1657			blkfill = DNODES_PER_BLOCK;
1658		}
1659
1660		for (;;) {
1661			char segsize[32];
1662			error = dnode_next_offset(dn,
1663			    0, &start, minlvl, blkfill, 0);
1664			if (error)
1665				break;
1666			end = start;
1667			error = dnode_next_offset(dn,
1668			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1669			zdb_nicenum(end - start, segsize);
1670			(void) printf("\t\tsegment [%016llx, %016llx)"
1671			    " size %5s\n", (u_longlong_t)start,
1672			    (u_longlong_t)end, segsize);
1673			if (error)
1674				break;
1675			start = end;
1676		}
1677	}
1678
1679	if (db != NULL)
1680		dmu_buf_rele(db, FTAG);
1681}
1682
1683static char *objset_types[DMU_OST_NUMTYPES] = {
1684	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1685
1686static void
1687dump_dir(objset_t *os)
1688{
1689	dmu_objset_stats_t dds;
1690	uint64_t object, object_count;
1691	uint64_t refdbytes, usedobjs, scratch;
1692	char numbuf[32];
1693	char blkbuf[BP_SPRINTF_LEN + 20];
1694	char osname[MAXNAMELEN];
1695	char *type = "UNKNOWN";
1696	int verbosity = dump_opt['d'];
1697	int print_header = 1;
1698	int i, error;
1699
1700	dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1701	dmu_objset_fast_stat(os, &dds);
1702	dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1703
1704	if (dds.dds_type < DMU_OST_NUMTYPES)
1705		type = objset_types[dds.dds_type];
1706
1707	if (dds.dds_type == DMU_OST_META) {
1708		dds.dds_creation_txg = TXG_INITIAL;
1709		usedobjs = os->os_rootbp->blk_fill;
1710		refdbytes = os->os_spa->spa_dsl_pool->
1711		    dp_mos_dir->dd_phys->dd_used_bytes;
1712	} else {
1713		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1714	}
1715
1716	ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1717
1718	zdb_nicenum(refdbytes, numbuf);
1719
1720	if (verbosity >= 4) {
1721		(void) sprintf(blkbuf, ", rootbp ");
1722		(void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1723	} else {
1724		blkbuf[0] = '\0';
1725	}
1726
1727	dmu_objset_name(os, osname);
1728
1729	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1730	    "%s, %llu objects%s\n",
1731	    osname, type, (u_longlong_t)dmu_objset_id(os),
1732	    (u_longlong_t)dds.dds_creation_txg,
1733	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1734
1735	if (zopt_objects != 0) {
1736		for (i = 0; i < zopt_objects; i++)
1737			dump_object(os, zopt_object[i], verbosity,
1738			    &print_header);
1739		(void) printf("\n");
1740		return;
1741	}
1742
1743	if (dump_opt['i'] != 0 || verbosity >= 2)
1744		dump_intent_log(dmu_objset_zil(os));
1745
1746	if (dmu_objset_ds(os) != NULL)
1747		dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1748
1749	if (verbosity < 2)
1750		return;
1751
1752	if (os->os_rootbp->blk_birth == 0)
1753		return;
1754
1755	dump_object(os, 0, verbosity, &print_header);
1756	object_count = 0;
1757	if (DMU_USERUSED_DNODE(os) != NULL &&
1758	    DMU_USERUSED_DNODE(os)->dn_type != 0) {
1759		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1760		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1761	}
1762
1763	object = 0;
1764	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1765		dump_object(os, object, verbosity, &print_header);
1766		object_count++;
1767	}
1768
1769	ASSERT3U(object_count, ==, usedobjs);
1770
1771	(void) printf("\n");
1772
1773	if (error != ESRCH) {
1774		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1775		abort();
1776	}
1777}
1778
1779static void
1780dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1781{
1782	time_t timestamp = ub->ub_timestamp;
1783
1784	(void) printf(header ? header : "");
1785	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1786	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1787	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1788	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1789	(void) printf("\ttimestamp = %llu UTC = %s",
1790	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1791	if (dump_opt['u'] >= 3) {
1792		char blkbuf[BP_SPRINTF_LEN];
1793		sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1794		(void) printf("\trootbp = %s\n", blkbuf);
1795	}
1796	(void) printf(footer ? footer : "");
1797}
1798
1799static void
1800dump_config(spa_t *spa)
1801{
1802	dmu_buf_t *db;
1803	size_t nvsize = 0;
1804	int error = 0;
1805
1806
1807	error = dmu_bonus_hold(spa->spa_meta_objset,
1808	    spa->spa_config_object, FTAG, &db);
1809
1810	if (error == 0) {
1811		nvsize = *(uint64_t *)db->db_data;
1812		dmu_buf_rele(db, FTAG);
1813
1814		(void) printf("\nMOS Configuration:\n");
1815		dump_packed_nvlist(spa->spa_meta_objset,
1816		    spa->spa_config_object, (void *)&nvsize, 1);
1817	} else {
1818		(void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1819		    (u_longlong_t)spa->spa_config_object, error);
1820	}
1821}
1822
1823static void
1824dump_cachefile(const char *cachefile)
1825{
1826	int fd;
1827	struct stat64 statbuf;
1828	char *buf;
1829	nvlist_t *config;
1830
1831	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1832		(void) printf("cannot open '%s': %s\n", cachefile,
1833		    strerror(errno));
1834		exit(1);
1835	}
1836
1837	if (fstat64(fd, &statbuf) != 0) {
1838		(void) printf("failed to stat '%s': %s\n", cachefile,
1839		    strerror(errno));
1840		exit(1);
1841	}
1842
1843	if ((buf = malloc(statbuf.st_size)) == NULL) {
1844		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1845		    (u_longlong_t)statbuf.st_size);
1846		exit(1);
1847	}
1848
1849	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1850		(void) fprintf(stderr, "failed to read %llu bytes\n",
1851		    (u_longlong_t)statbuf.st_size);
1852		exit(1);
1853	}
1854
1855	(void) close(fd);
1856
1857	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1858		(void) fprintf(stderr, "failed to unpack nvlist\n");
1859		exit(1);
1860	}
1861
1862	free(buf);
1863
1864	dump_nvlist(config, 0);
1865
1866	nvlist_free(config);
1867}
1868
1869#define	ZDB_MAX_UB_HEADER_SIZE 32
1870
1871static void
1872dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1873{
1874	vdev_t vd;
1875	vdev_t *vdp = &vd;
1876	char header[ZDB_MAX_UB_HEADER_SIZE];
1877
1878	vd.vdev_ashift = ashift;
1879	vdp->vdev_top = vdp;
1880
1881	for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1882		uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1883		uberblock_t *ub = (void *)((char *)lbl + uoff);
1884
1885		if (uberblock_verify(ub))
1886			continue;
1887		(void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1888		    "Uberblock[%d]\n", i);
1889		dump_uberblock(ub, header, "");
1890	}
1891}
1892
1893static void
1894dump_label(const char *dev)
1895{
1896	int fd;
1897	vdev_label_t label;
1898	char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1899	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1900	struct stat64 statbuf;
1901	uint64_t psize, ashift;
1902	int len = strlen(dev) + 1;
1903
1904	if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1905		len++;
1906		path = malloc(len);
1907		(void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1908	} else {
1909		path = strdup(dev);
1910	}
1911
1912	if ((fd = open64(path, O_RDONLY)) < 0) {
1913		(void) printf("cannot open '%s': %s\n", path, strerror(errno));
1914		free(path);
1915		exit(1);
1916	}
1917
1918	if (fstat64(fd, &statbuf) != 0) {
1919		(void) printf("failed to stat '%s': %s\n", path,
1920		    strerror(errno));
1921		free(path);
1922		(void) close(fd);
1923		exit(1);
1924	}
1925
1926	if (S_ISBLK(statbuf.st_mode)) {
1927		(void) printf("cannot use '%s': character device required\n",
1928		    path);
1929		free(path);
1930		(void) close(fd);
1931		exit(1);
1932	}
1933
1934	psize = statbuf.st_size;
1935	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1936
1937	for (int l = 0; l < VDEV_LABELS; l++) {
1938		nvlist_t *config = NULL;
1939
1940		(void) printf("--------------------------------------------\n");
1941		(void) printf("LABEL %d\n", l);
1942		(void) printf("--------------------------------------------\n");
1943
1944		if (pread64(fd, &label, sizeof (label),
1945		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1946			(void) printf("failed to read label %d\n", l);
1947			continue;
1948		}
1949
1950		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1951			(void) printf("failed to unpack label %d\n", l);
1952			ashift = SPA_MINBLOCKSHIFT;
1953		} else {
1954			nvlist_t *vdev_tree = NULL;
1955
1956			dump_nvlist(config, 4);
1957			if ((nvlist_lookup_nvlist(config,
1958			    ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1959			    (nvlist_lookup_uint64(vdev_tree,
1960			    ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1961				ashift = SPA_MINBLOCKSHIFT;
1962			nvlist_free(config);
1963		}
1964		if (dump_opt['u'])
1965			dump_label_uberblocks(&label, ashift);
1966	}
1967
1968	free(path);
1969	(void) close(fd);
1970}
1971
1972/*ARGSUSED*/
1973static int
1974dump_one_dir(const char *dsname, void *arg)
1975{
1976	int error;
1977	objset_t *os;
1978
1979	error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1980	if (error) {
1981		(void) printf("Could not open %s, error %d\n", dsname, error);
1982		return (0);
1983	}
1984	dump_dir(os);
1985	dmu_objset_disown(os, FTAG);
1986	fuid_table_destroy();
1987	sa_loaded = B_FALSE;
1988	return (0);
1989}
1990
1991/*
1992 * Block statistics.
1993 */
1994#define	PSIZE_HISTO_SIZE (SPA_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1)
1995typedef struct zdb_blkstats {
1996	uint64_t zb_asize;
1997	uint64_t zb_lsize;
1998	uint64_t zb_psize;
1999	uint64_t zb_count;
2000	uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2001} zdb_blkstats_t;
2002
2003/*
2004 * Extended object types to report deferred frees and dedup auto-ditto blocks.
2005 */
2006#define	ZDB_OT_DEFERRED	(DMU_OT_NUMTYPES + 0)
2007#define	ZDB_OT_DITTO	(DMU_OT_NUMTYPES + 1)
2008#define	ZDB_OT_OTHER	(DMU_OT_NUMTYPES + 2)
2009#define	ZDB_OT_TOTAL	(DMU_OT_NUMTYPES + 3)
2010
2011static char *zdb_ot_extname[] = {
2012	"deferred free",
2013	"dedup ditto",
2014	"other",
2015	"Total",
2016};
2017
2018#define	ZB_TOTAL	DN_MAX_LEVELS
2019
2020typedef struct zdb_cb {
2021	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2022	uint64_t	zcb_dedup_asize;
2023	uint64_t	zcb_dedup_blocks;
2024	uint64_t	zcb_start;
2025	uint64_t	zcb_lastprint;
2026	uint64_t	zcb_totalasize;
2027	uint64_t	zcb_errors[256];
2028	int		zcb_readfails;
2029	int		zcb_haderrors;
2030	spa_t		*zcb_spa;
2031} zdb_cb_t;
2032
2033static void
2034zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2035    dmu_object_type_t type)
2036{
2037	uint64_t refcnt = 0;
2038
2039	ASSERT(type < ZDB_OT_TOTAL);
2040
2041	if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2042		return;
2043
2044	for (int i = 0; i < 4; i++) {
2045		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2046		int t = (i & 1) ? type : ZDB_OT_TOTAL;
2047		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2048
2049		zb->zb_asize += BP_GET_ASIZE(bp);
2050		zb->zb_lsize += BP_GET_LSIZE(bp);
2051		zb->zb_psize += BP_GET_PSIZE(bp);
2052		zb->zb_count++;
2053		zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++;
2054	}
2055
2056	if (dump_opt['L'])
2057		return;
2058
2059	if (BP_GET_DEDUP(bp)) {
2060		ddt_t *ddt;
2061		ddt_entry_t *dde;
2062
2063		ddt = ddt_select(zcb->zcb_spa, bp);
2064		ddt_enter(ddt);
2065		dde = ddt_lookup(ddt, bp, B_FALSE);
2066
2067		if (dde == NULL) {
2068			refcnt = 0;
2069		} else {
2070			ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2071			ddt_phys_decref(ddp);
2072			refcnt = ddp->ddp_refcnt;
2073			if (ddt_phys_total_refcnt(dde) == 0)
2074				ddt_remove(ddt, dde);
2075		}
2076		ddt_exit(ddt);
2077	}
2078
2079	VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2080	    refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2081	    bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2082}
2083
2084static void
2085zdb_blkptr_done(zio_t *zio)
2086{
2087	spa_t *spa = zio->io_spa;
2088	blkptr_t *bp = zio->io_bp;
2089	int ioerr = zio->io_error;
2090	zdb_cb_t *zcb = zio->io_private;
2091	zbookmark_t *zb = &zio->io_bookmark;
2092
2093	zio_data_buf_free(zio->io_data, zio->io_size);
2094
2095	mutex_enter(&spa->spa_scrub_lock);
2096	spa->spa_scrub_inflight--;
2097	cv_broadcast(&spa->spa_scrub_io_cv);
2098
2099	if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2100		char blkbuf[BP_SPRINTF_LEN];
2101
2102		zcb->zcb_haderrors = 1;
2103		zcb->zcb_errors[ioerr]++;
2104
2105		if (dump_opt['b'] >= 2)
2106			sprintf_blkptr(blkbuf, bp);
2107		else
2108			blkbuf[0] = '\0';
2109
2110		(void) printf("zdb_blkptr_cb: "
2111		    "Got error %d reading "
2112		    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2113		    ioerr,
2114		    (u_longlong_t)zb->zb_objset,
2115		    (u_longlong_t)zb->zb_object,
2116		    (u_longlong_t)zb->zb_level,
2117		    (u_longlong_t)zb->zb_blkid,
2118		    blkbuf);
2119	}
2120	mutex_exit(&spa->spa_scrub_lock);
2121}
2122
2123static int
2124zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2125    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2126{
2127	zdb_cb_t *zcb = arg;
2128	char blkbuf[BP_SPRINTF_LEN];
2129	dmu_object_type_t type;
2130	boolean_t is_metadata;
2131
2132	if (bp == NULL)
2133		return (0);
2134
2135	type = BP_GET_TYPE(bp);
2136
2137	zdb_count_block(zcb, zilog, bp,
2138	    (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2139
2140	is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2141
2142	if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2143		size_t size = BP_GET_PSIZE(bp);
2144		void *data = zio_data_buf_alloc(size);
2145		int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2146
2147		/* If it's an intent log block, failure is expected. */
2148		if (zb->zb_level == ZB_ZIL_LEVEL)
2149			flags |= ZIO_FLAG_SPECULATIVE;
2150
2151		mutex_enter(&spa->spa_scrub_lock);
2152		while (spa->spa_scrub_inflight > max_inflight)
2153			cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2154		spa->spa_scrub_inflight++;
2155		mutex_exit(&spa->spa_scrub_lock);
2156
2157		zio_nowait(zio_read(NULL, spa, bp, data, size,
2158		    zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2159	}
2160
2161	zcb->zcb_readfails = 0;
2162
2163	if (dump_opt['b'] >= 5) {
2164		sprintf_blkptr(blkbuf, bp);
2165		(void) printf("objset %llu object %llu "
2166		    "level %lld offset 0x%llx %s\n",
2167		    (u_longlong_t)zb->zb_objset,
2168		    (u_longlong_t)zb->zb_object,
2169		    (longlong_t)zb->zb_level,
2170		    (u_longlong_t)blkid2offset(dnp, bp, zb),
2171		    blkbuf);
2172	}
2173
2174	if (dump_opt['b'] < 5 && isatty(STDERR_FILENO) &&
2175	    gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2176		uint64_t now = gethrtime();
2177		char buf[10];
2178		uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2179		int kb_per_sec =
2180		    1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2181		int sec_remaining =
2182		    (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2183
2184		zfs_nicenum(bytes, buf, sizeof (buf));
2185		(void) fprintf(stderr,
2186		    "\r%5s completed (%4dMB/s) "
2187		    "estimated time remaining: %uhr %02umin %02usec        ",
2188		    buf, kb_per_sec / 1024,
2189		    sec_remaining / 60 / 60,
2190		    sec_remaining / 60 % 60,
2191		    sec_remaining % 60);
2192
2193		zcb->zcb_lastprint = now;
2194	}
2195
2196	return (0);
2197}
2198
2199static void
2200zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2201{
2202	vdev_t *vd = sm->sm_ppd;
2203
2204	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2205	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2206}
2207
2208/* ARGSUSED */
2209static void
2210zdb_space_map_load(space_map_t *sm)
2211{
2212}
2213
2214static void
2215zdb_space_map_unload(space_map_t *sm)
2216{
2217	space_map_vacate(sm, zdb_leak, sm);
2218}
2219
2220/* ARGSUSED */
2221static void
2222zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2223{
2224}
2225
2226static space_map_ops_t zdb_space_map_ops = {
2227	zdb_space_map_load,
2228	zdb_space_map_unload,
2229	NULL,	/* alloc */
2230	zdb_space_map_claim,
2231	NULL,	/* free */
2232	NULL	/* maxsize */
2233};
2234
2235static void
2236zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2237{
2238	ddt_bookmark_t ddb = { 0 };
2239	ddt_entry_t dde;
2240	int error;
2241
2242	while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2243		blkptr_t blk;
2244		ddt_phys_t *ddp = dde.dde_phys;
2245
2246		if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2247			return;
2248
2249		ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2250
2251		for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2252			if (ddp->ddp_phys_birth == 0)
2253				continue;
2254			ddt_bp_create(ddb.ddb_checksum,
2255			    &dde.dde_key, ddp, &blk);
2256			if (p == DDT_PHYS_DITTO) {
2257				zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2258			} else {
2259				zcb->zcb_dedup_asize +=
2260				    BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2261				zcb->zcb_dedup_blocks++;
2262			}
2263		}
2264		if (!dump_opt['L']) {
2265			ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2266			ddt_enter(ddt);
2267			VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2268			ddt_exit(ddt);
2269		}
2270	}
2271
2272	ASSERT(error == ENOENT);
2273}
2274
2275static void
2276zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2277{
2278	zcb->zcb_spa = spa;
2279
2280	if (!dump_opt['L']) {
2281		vdev_t *rvd = spa->spa_root_vdev;
2282		for (int c = 0; c < rvd->vdev_children; c++) {
2283			vdev_t *vd = rvd->vdev_child[c];
2284			for (int m = 0; m < vd->vdev_ms_count; m++) {
2285				metaslab_t *msp = vd->vdev_ms[m];
2286				mutex_enter(&msp->ms_lock);
2287				space_map_unload(msp->ms_map);
2288				VERIFY(space_map_load(msp->ms_map,
2289				    &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2290				    spa->spa_meta_objset) == 0);
2291				msp->ms_map->sm_ppd = vd;
2292				mutex_exit(&msp->ms_lock);
2293			}
2294		}
2295	}
2296
2297	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2298
2299	zdb_ddt_leak_init(spa, zcb);
2300
2301	spa_config_exit(spa, SCL_CONFIG, FTAG);
2302}
2303
2304static void
2305zdb_leak_fini(spa_t *spa)
2306{
2307	if (!dump_opt['L']) {
2308		vdev_t *rvd = spa->spa_root_vdev;
2309		for (int c = 0; c < rvd->vdev_children; c++) {
2310			vdev_t *vd = rvd->vdev_child[c];
2311			for (int m = 0; m < vd->vdev_ms_count; m++) {
2312				metaslab_t *msp = vd->vdev_ms[m];
2313				mutex_enter(&msp->ms_lock);
2314				space_map_unload(msp->ms_map);
2315				mutex_exit(&msp->ms_lock);
2316			}
2317		}
2318	}
2319}
2320
2321/* ARGSUSED */
2322static int
2323count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2324{
2325	zdb_cb_t *zcb = arg;
2326
2327	if (dump_opt['b'] >= 5) {
2328		char blkbuf[BP_SPRINTF_LEN];
2329		sprintf_blkptr(blkbuf, bp);
2330		(void) printf("[%s] %s\n",
2331		    "deferred free", blkbuf);
2332	}
2333	zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2334	return (0);
2335}
2336
2337static int
2338dump_block_stats(spa_t *spa)
2339{
2340	zdb_cb_t zcb = { 0 };
2341	zdb_blkstats_t *zb, *tzb;
2342	uint64_t norm_alloc, norm_space, total_alloc, total_found;
2343	int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2344	int leaks = 0;
2345
2346	(void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2347	    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2348	    (dump_opt['c'] == 1) ? "metadata " : "",
2349	    dump_opt['c'] ? "checksums " : "",
2350	    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2351	    !dump_opt['L'] ? "nothing leaked " : "");
2352
2353	/*
2354	 * Load all space maps as SM_ALLOC maps, then traverse the pool
2355	 * claiming each block we discover.  If the pool is perfectly
2356	 * consistent, the space maps will be empty when we're done.
2357	 * Anything left over is a leak; any block we can't claim (because
2358	 * it's not part of any space map) is a double allocation,
2359	 * reference to a freed block, or an unclaimed log block.
2360	 */
2361	zdb_leak_init(spa, &zcb);
2362
2363	/*
2364	 * If there's a deferred-free bplist, process that first.
2365	 */
2366	(void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2367	    count_block_cb, &zcb, NULL);
2368	if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2369		(void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2370		    count_block_cb, &zcb, NULL);
2371	}
2372	if (spa_feature_is_active(spa,
2373	    &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2374		VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2375		    spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2376		    &zcb, NULL));
2377	}
2378
2379	if (dump_opt['c'] > 1)
2380		flags |= TRAVERSE_PREFETCH_DATA;
2381
2382	zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2383	zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2384	zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2385
2386	/*
2387	 * If we've traversed the data blocks then we need to wait for those
2388	 * I/Os to complete. We leverage "The Godfather" zio to wait on
2389	 * all async I/Os to complete.
2390	 */
2391	if (dump_opt['c']) {
2392		(void) zio_wait(spa->spa_async_zio_root);
2393		spa->spa_async_zio_root = zio_root(spa, NULL, NULL,
2394		    ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2395		    ZIO_FLAG_GODFATHER);
2396	}
2397
2398	if (zcb.zcb_haderrors) {
2399		(void) printf("\nError counts:\n\n");
2400		(void) printf("\t%5s  %s\n", "errno", "count");
2401		for (int e = 0; e < 256; e++) {
2402			if (zcb.zcb_errors[e] != 0) {
2403				(void) printf("\t%5d  %llu\n",
2404				    e, (u_longlong_t)zcb.zcb_errors[e]);
2405			}
2406		}
2407	}
2408
2409	/*
2410	 * Report any leaked segments.
2411	 */
2412	zdb_leak_fini(spa);
2413
2414	tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2415
2416	norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2417	norm_space = metaslab_class_get_space(spa_normal_class(spa));
2418
2419	total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2420	total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2421
2422	if (total_found == total_alloc) {
2423		if (!dump_opt['L'])
2424			(void) printf("\n\tNo leaks (block sum matches space"
2425			    " maps exactly)\n");
2426	} else {
2427		(void) printf("block traversal size %llu != alloc %llu "
2428		    "(%s %lld)\n",
2429		    (u_longlong_t)total_found,
2430		    (u_longlong_t)total_alloc,
2431		    (dump_opt['L']) ? "unreachable" : "leaked",
2432		    (longlong_t)(total_alloc - total_found));
2433		leaks = 1;
2434	}
2435
2436	if (tzb->zb_count == 0)
2437		return (2);
2438
2439	(void) printf("\n");
2440	(void) printf("\tbp count:      %10llu\n",
2441	    (u_longlong_t)tzb->zb_count);
2442	(void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2443	    (u_longlong_t)tzb->zb_lsize,
2444	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2445	(void) printf("\tbp physical:   %10llu      avg:"
2446	    " %6llu     compression: %6.2f\n",
2447	    (u_longlong_t)tzb->zb_psize,
2448	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2449	    (double)tzb->zb_lsize / tzb->zb_psize);
2450	(void) printf("\tbp allocated:  %10llu      avg:"
2451	    " %6llu     compression: %6.2f\n",
2452	    (u_longlong_t)tzb->zb_asize,
2453	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2454	    (double)tzb->zb_lsize / tzb->zb_asize);
2455	(void) printf("\tbp deduped:    %10llu    ref>1:"
2456	    " %6llu   deduplication: %6.2f\n",
2457	    (u_longlong_t)zcb.zcb_dedup_asize,
2458	    (u_longlong_t)zcb.zcb_dedup_blocks,
2459	    (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2460	(void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2461	    (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2462
2463	if (dump_opt['b'] >= 2) {
2464		int l, t, level;
2465		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2466		    "\t  avg\t comp\t%%Total\tType\n");
2467
2468		for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2469			char csize[32], lsize[32], psize[32], asize[32];
2470			char avg[32];
2471			char *typename;
2472
2473			if (t < DMU_OT_NUMTYPES)
2474				typename = dmu_ot[t].ot_name;
2475			else
2476				typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2477
2478			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2479				(void) printf("%6s\t%5s\t%5s\t%5s"
2480				    "\t%5s\t%5s\t%6s\t%s\n",
2481				    "-",
2482				    "-",
2483				    "-",
2484				    "-",
2485				    "-",
2486				    "-",
2487				    "-",
2488				    typename);
2489				continue;
2490			}
2491
2492			for (l = ZB_TOTAL - 1; l >= -1; l--) {
2493				level = (l == -1 ? ZB_TOTAL : l);
2494				zb = &zcb.zcb_type[level][t];
2495
2496				if (zb->zb_asize == 0)
2497					continue;
2498
2499				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2500					continue;
2501
2502				if (level == 0 && zb->zb_asize ==
2503				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2504					continue;
2505
2506				zdb_nicenum(zb->zb_count, csize);
2507				zdb_nicenum(zb->zb_lsize, lsize);
2508				zdb_nicenum(zb->zb_psize, psize);
2509				zdb_nicenum(zb->zb_asize, asize);
2510				zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2511
2512				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2513				    "\t%5.2f\t%6.2f\t",
2514				    csize, lsize, psize, asize, avg,
2515				    (double)zb->zb_lsize / zb->zb_psize,
2516				    100.0 * zb->zb_asize / tzb->zb_asize);
2517
2518				if (level == ZB_TOTAL)
2519					(void) printf("%s\n", typename);
2520				else
2521					(void) printf("    L%d %s\n",
2522					    level, typename);
2523
2524				if (dump_opt['b'] >= 4) {
2525					(void) printf("psize "
2526					    "(in 512-byte sectors): "
2527					    "number of blocks\n");
2528					dump_histogram(zb->zb_psize_histogram,
2529					    PSIZE_HISTO_SIZE);
2530				}
2531			}
2532		}
2533	}
2534
2535	(void) printf("\n");
2536
2537	if (leaks)
2538		return (2);
2539
2540	if (zcb.zcb_haderrors)
2541		return (3);
2542
2543	return (0);
2544}
2545
2546typedef struct zdb_ddt_entry {
2547	ddt_key_t	zdde_key;
2548	uint64_t	zdde_ref_blocks;
2549	uint64_t	zdde_ref_lsize;
2550	uint64_t	zdde_ref_psize;
2551	uint64_t	zdde_ref_dsize;
2552	avl_node_t	zdde_node;
2553} zdb_ddt_entry_t;
2554
2555/* ARGSUSED */
2556static int
2557zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2558    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2559{
2560	avl_tree_t *t = arg;
2561	avl_index_t where;
2562	zdb_ddt_entry_t *zdde, zdde_search;
2563
2564	if (bp == NULL)
2565		return (0);
2566
2567	if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2568		(void) printf("traversing objset %llu, %llu objects, "
2569		    "%lu blocks so far\n",
2570		    (u_longlong_t)zb->zb_objset,
2571		    (u_longlong_t)bp->blk_fill,
2572		    avl_numnodes(t));
2573	}
2574
2575	if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2576	    BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2577		return (0);
2578
2579	ddt_key_fill(&zdde_search.zdde_key, bp);
2580
2581	zdde = avl_find(t, &zdde_search, &where);
2582
2583	if (zdde == NULL) {
2584		zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2585		zdde->zdde_key = zdde_search.zdde_key;
2586		avl_insert(t, zdde, where);
2587	}
2588
2589	zdde->zdde_ref_blocks += 1;
2590	zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2591	zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2592	zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2593
2594	return (0);
2595}
2596
2597static void
2598dump_simulated_ddt(spa_t *spa)
2599{
2600	avl_tree_t t;
2601	void *cookie = NULL;
2602	zdb_ddt_entry_t *zdde;
2603	ddt_histogram_t ddh_total = { 0 };
2604	ddt_stat_t dds_total = { 0 };
2605
2606	avl_create(&t, ddt_entry_compare,
2607	    sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2608
2609	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2610
2611	(void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2612	    zdb_ddt_add_cb, &t);
2613
2614	spa_config_exit(spa, SCL_CONFIG, FTAG);
2615
2616	while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2617		ddt_stat_t dds;
2618		uint64_t refcnt = zdde->zdde_ref_blocks;
2619		ASSERT(refcnt != 0);
2620
2621		dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2622		dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2623		dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2624		dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2625
2626		dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2627		dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2628		dds.dds_ref_psize = zdde->zdde_ref_psize;
2629		dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2630
2631		ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2632
2633		umem_free(zdde, sizeof (*zdde));
2634	}
2635
2636	avl_destroy(&t);
2637
2638	ddt_histogram_stat(&dds_total, &ddh_total);
2639
2640	(void) printf("Simulated DDT histogram:\n");
2641
2642	zpool_dump_ddt(&dds_total, &ddh_total);
2643
2644	dump_dedup_ratio(&dds_total);
2645}
2646
2647static void
2648dump_zpool(spa_t *spa)
2649{
2650	dsl_pool_t *dp = spa_get_dsl(spa);
2651	int rc = 0;
2652
2653	if (dump_opt['S']) {
2654		dump_simulated_ddt(spa);
2655		return;
2656	}
2657
2658	if (!dump_opt['e'] && dump_opt['C'] > 1) {
2659		(void) printf("\nCached configuration:\n");
2660		dump_nvlist(spa->spa_config, 8);
2661	}
2662
2663	if (dump_opt['C'])
2664		dump_config(spa);
2665
2666	if (dump_opt['u'])
2667		dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2668
2669	if (dump_opt['D'])
2670		dump_all_ddts(spa);
2671
2672	if (dump_opt['d'] > 2 || dump_opt['m'])
2673		dump_metaslabs(spa);
2674
2675	if (dump_opt['d'] || dump_opt['i']) {
2676		dump_dir(dp->dp_meta_objset);
2677		if (dump_opt['d'] >= 3) {
2678			dump_bpobj(&spa->spa_deferred_bpobj,
2679			    "Deferred frees", 0);
2680			if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2681				dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2682				    "Pool snapshot frees", 0);
2683			}
2684
2685			if (spa_feature_is_active(spa,
2686			    &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2687				dump_bptree(spa->spa_meta_objset,
2688				    spa->spa_dsl_pool->dp_bptree_obj,
2689				    "Pool dataset frees");
2690			}
2691			dump_dtl(spa->spa_root_vdev, 0);
2692		}
2693		(void) dmu_objset_find(spa_name(spa), dump_one_dir,
2694		    NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2695	}
2696	if (dump_opt['b'] || dump_opt['c'])
2697		rc = dump_block_stats(spa);
2698
2699	if (dump_opt['s'])
2700		show_pool_stats(spa);
2701
2702	if (dump_opt['h'])
2703		dump_history(spa);
2704
2705	if (rc != 0)
2706		exit(rc);
2707}
2708
2709#define	ZDB_FLAG_CHECKSUM	0x0001
2710#define	ZDB_FLAG_DECOMPRESS	0x0002
2711#define	ZDB_FLAG_BSWAP		0x0004
2712#define	ZDB_FLAG_GBH		0x0008
2713#define	ZDB_FLAG_INDIRECT	0x0010
2714#define	ZDB_FLAG_PHYS		0x0020
2715#define	ZDB_FLAG_RAW		0x0040
2716#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
2717
2718int flagbits[256];
2719
2720static void
2721zdb_print_blkptr(blkptr_t *bp, int flags)
2722{
2723	char blkbuf[BP_SPRINTF_LEN];
2724
2725	if (flags & ZDB_FLAG_BSWAP)
2726		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2727
2728	sprintf_blkptr(blkbuf, bp);
2729	(void) printf("%s\n", blkbuf);
2730}
2731
2732static void
2733zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2734{
2735	int i;
2736
2737	for (i = 0; i < nbps; i++)
2738		zdb_print_blkptr(&bp[i], flags);
2739}
2740
2741static void
2742zdb_dump_gbh(void *buf, int flags)
2743{
2744	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2745}
2746
2747static void
2748zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2749{
2750	if (flags & ZDB_FLAG_BSWAP)
2751		byteswap_uint64_array(buf, size);
2752	(void) write(1, buf, size);
2753}
2754
2755static void
2756zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2757{
2758	uint64_t *d = (uint64_t *)buf;
2759	int nwords = size / sizeof (uint64_t);
2760	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2761	int i, j;
2762	char *hdr, *c;
2763
2764
2765	if (do_bswap)
2766		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2767	else
2768		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2769
2770	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2771
2772	for (i = 0; i < nwords; i += 2) {
2773		(void) printf("%06llx:  %016llx  %016llx  ",
2774		    (u_longlong_t)(i * sizeof (uint64_t)),
2775		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2776		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2777
2778		c = (char *)&d[i];
2779		for (j = 0; j < 2 * sizeof (uint64_t); j++)
2780			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
2781		(void) printf("\n");
2782	}
2783}
2784
2785/*
2786 * There are two acceptable formats:
2787 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
2788 *	child[.child]*    - For example: 0.1.1
2789 *
2790 * The second form can be used to specify arbitrary vdevs anywhere
2791 * in the heirarchy.  For example, in a pool with a mirror of
2792 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2793 */
2794static vdev_t *
2795zdb_vdev_lookup(vdev_t *vdev, char *path)
2796{
2797	char *s, *p, *q;
2798	int i;
2799
2800	if (vdev == NULL)
2801		return (NULL);
2802
2803	/* First, assume the x.x.x.x format */
2804	i = (int)strtoul(path, &s, 10);
2805	if (s == path || (s && *s != '.' && *s != '\0'))
2806		goto name;
2807	if (i < 0 || i >= vdev->vdev_children)
2808		return (NULL);
2809
2810	vdev = vdev->vdev_child[i];
2811	if (*s == '\0')
2812		return (vdev);
2813	return (zdb_vdev_lookup(vdev, s+1));
2814
2815name:
2816	for (i = 0; i < vdev->vdev_children; i++) {
2817		vdev_t *vc = vdev->vdev_child[i];
2818
2819		if (vc->vdev_path == NULL) {
2820			vc = zdb_vdev_lookup(vc, path);
2821			if (vc == NULL)
2822				continue;
2823			else
2824				return (vc);
2825		}
2826
2827		p = strrchr(vc->vdev_path, '/');
2828		p = p ? p + 1 : vc->vdev_path;
2829		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2830
2831		if (strcmp(vc->vdev_path, path) == 0)
2832			return (vc);
2833		if (strcmp(p, path) == 0)
2834			return (vc);
2835		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2836			return (vc);
2837	}
2838
2839	return (NULL);
2840}
2841
2842/*
2843 * Read a block from a pool and print it out.  The syntax of the
2844 * block descriptor is:
2845 *
2846 *	pool:vdev_specifier:offset:size[:flags]
2847 *
2848 *	pool           - The name of the pool you wish to read from
2849 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2850 *	offset         - offset, in hex, in bytes
2851 *	size           - Amount of data to read, in hex, in bytes
2852 *	flags          - A string of characters specifying options
2853 *		 b: Decode a blkptr at given offset within block
2854 *		*c: Calculate and display checksums
2855 *		 d: Decompress data before dumping
2856 *		 e: Byteswap data before dumping
2857 *		 g: Display data as a gang block header
2858 *		 i: Display as an indirect block
2859 *		 p: Do I/O to physical offset
2860 *		 r: Dump raw data to stdout
2861 *
2862 *              * = not yet implemented
2863 */
2864static void
2865zdb_read_block(char *thing, spa_t *spa)
2866{
2867	blkptr_t blk, *bp = &blk;
2868	dva_t *dva = bp->blk_dva;
2869	int flags = 0;
2870	uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2871	zio_t *zio;
2872	vdev_t *vd;
2873	void *pbuf, *lbuf, *buf;
2874	char *s, *p, *dup, *vdev, *flagstr;
2875	int i, error;
2876
2877	dup = strdup(thing);
2878	s = strtok(dup, ":");
2879	vdev = s ? s : "";
2880	s = strtok(NULL, ":");
2881	offset = strtoull(s ? s : "", NULL, 16);
2882	s = strtok(NULL, ":");
2883	size = strtoull(s ? s : "", NULL, 16);
2884	s = strtok(NULL, ":");
2885	flagstr = s ? s : "";
2886
2887	s = NULL;
2888	if (size == 0)
2889		s = "size must not be zero";
2890	if (!IS_P2ALIGNED(size, DEV_BSIZE))
2891		s = "size must be a multiple of sector size";
2892	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2893		s = "offset must be a multiple of sector size";
2894	if (s) {
2895		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2896		free(dup);
2897		return;
2898	}
2899
2900	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2901		for (i = 0; flagstr[i]; i++) {
2902			int bit = flagbits[(uchar_t)flagstr[i]];
2903
2904			if (bit == 0) {
2905				(void) printf("***Invalid flag: %c\n",
2906				    flagstr[i]);
2907				continue;
2908			}
2909			flags |= bit;
2910
2911			/* If it's not something with an argument, keep going */
2912			if ((bit & (ZDB_FLAG_CHECKSUM |
2913			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
2914				continue;
2915
2916			p = &flagstr[i + 1];
2917			if (bit == ZDB_FLAG_PRINT_BLKPTR)
2918				blkptr_offset = strtoull(p, &p, 16);
2919			if (*p != ':' && *p != '\0') {
2920				(void) printf("***Invalid flag arg: '%s'\n", s);
2921				free(dup);
2922				return;
2923			}
2924		}
2925	}
2926
2927	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2928	if (vd == NULL) {
2929		(void) printf("***Invalid vdev: %s\n", vdev);
2930		free(dup);
2931		return;
2932	} else {
2933		if (vd->vdev_path)
2934			(void) fprintf(stderr, "Found vdev: %s\n",
2935			    vd->vdev_path);
2936		else
2937			(void) fprintf(stderr, "Found vdev type: %s\n",
2938			    vd->vdev_ops->vdev_op_type);
2939	}
2940
2941	psize = size;
2942	lsize = size;
2943
2944	pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2945	lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2946
2947	BP_ZERO(bp);
2948
2949	DVA_SET_VDEV(&dva[0], vd->vdev_id);
2950	DVA_SET_OFFSET(&dva[0], offset);
2951	DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2952	DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2953
2954	BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2955
2956	BP_SET_LSIZE(bp, lsize);
2957	BP_SET_PSIZE(bp, psize);
2958	BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2959	BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2960	BP_SET_TYPE(bp, DMU_OT_NONE);
2961	BP_SET_LEVEL(bp, 0);
2962	BP_SET_DEDUP(bp, 0);
2963	BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2964
2965	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2966	zio = zio_root(spa, NULL, NULL, 0);
2967
2968	if (vd == vd->vdev_top) {
2969		/*
2970		 * Treat this as a normal block read.
2971		 */
2972		zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2973		    ZIO_PRIORITY_SYNC_READ,
2974		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2975	} else {
2976		/*
2977		 * Treat this as a vdev child I/O.
2978		 */
2979		zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2980		    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2981		    ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2982		    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2983		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2984	}
2985
2986	error = zio_wait(zio);
2987	spa_config_exit(spa, SCL_STATE, FTAG);
2988
2989	if (error) {
2990		(void) printf("Read of %s failed, error: %d\n", thing, error);
2991		goto out;
2992	}
2993
2994	if (flags & ZDB_FLAG_DECOMPRESS) {
2995		/*
2996		 * We don't know how the data was compressed, so just try
2997		 * every decompress function at every inflated blocksize.
2998		 */
2999		enum zio_compress c;
3000		void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3001		void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3002
3003		bcopy(pbuf, pbuf2, psize);
3004
3005		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3006		    SPA_MAXBLOCKSIZE - psize) == 0);
3007
3008		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3009		    SPA_MAXBLOCKSIZE - psize) == 0);
3010
3011		for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3012		    lsize -= SPA_MINBLOCKSIZE) {
3013			for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3014				if (zio_decompress_data(c, pbuf, lbuf,
3015				    psize, lsize) == 0 &&
3016				    zio_decompress_data(c, pbuf2, lbuf2,
3017				    psize, lsize) == 0 &&
3018				    bcmp(lbuf, lbuf2, lsize) == 0)
3019					break;
3020			}
3021			if (c != ZIO_COMPRESS_FUNCTIONS)
3022				break;
3023			lsize -= SPA_MINBLOCKSIZE;
3024		}
3025
3026		umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3027		umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3028
3029		if (lsize <= psize) {
3030			(void) printf("Decompress of %s failed\n", thing);
3031			goto out;
3032		}
3033		buf = lbuf;
3034		size = lsize;
3035	} else {
3036		buf = pbuf;
3037		size = psize;
3038	}
3039
3040	if (flags & ZDB_FLAG_PRINT_BLKPTR)
3041		zdb_print_blkptr((blkptr_t *)(void *)
3042		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3043	else if (flags & ZDB_FLAG_RAW)
3044		zdb_dump_block_raw(buf, size, flags);
3045	else if (flags & ZDB_FLAG_INDIRECT)
3046		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3047		    flags);
3048	else if (flags & ZDB_FLAG_GBH)
3049		zdb_dump_gbh(buf, flags);
3050	else
3051		zdb_dump_block(thing, buf, size, flags);
3052
3053out:
3054	umem_free(pbuf, SPA_MAXBLOCKSIZE);
3055	umem_free(lbuf, SPA_MAXBLOCKSIZE);
3056	free(dup);
3057}
3058
3059static boolean_t
3060pool_match(nvlist_t *cfg, char *tgt)
3061{
3062	uint64_t v, guid = strtoull(tgt, NULL, 0);
3063	char *s;
3064
3065	if (guid != 0) {
3066		if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3067			return (v == guid);
3068	} else {
3069		if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3070			return (strcmp(s, tgt) == 0);
3071	}
3072	return (B_FALSE);
3073}
3074
3075static char *
3076find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3077{
3078	nvlist_t *pools;
3079	nvlist_t *match = NULL;
3080	char *name = NULL;
3081	char *sepp = NULL;
3082	char sep;
3083	int count = 0;
3084	importargs_t args = { 0 };
3085
3086	args.paths = dirc;
3087	args.path = dirv;
3088	args.can_be_active = B_TRUE;
3089
3090	if ((sepp = strpbrk(*target, "/@")) != NULL) {
3091		sep = *sepp;
3092		*sepp = '\0';
3093	}
3094
3095	pools = zpool_search_import(g_zfs, &args);
3096
3097	if (pools != NULL) {
3098		nvpair_t *elem = NULL;
3099		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3100			verify(nvpair_value_nvlist(elem, configp) == 0);
3101			if (pool_match(*configp, *target)) {
3102				count++;
3103				if (match != NULL) {
3104					/* print previously found config */
3105					if (name != NULL) {
3106						(void) printf("%s\n", name);
3107						dump_nvlist(match, 8);
3108						name = NULL;
3109					}
3110					(void) printf("%s\n",
3111					    nvpair_name(elem));
3112					dump_nvlist(*configp, 8);
3113				} else {
3114					match = *configp;
3115					name = nvpair_name(elem);
3116				}
3117			}
3118		}
3119	}
3120	if (count > 1)
3121		(void) fatal("\tMatched %d pools - use pool GUID "
3122		    "instead of pool name or \n"
3123		    "\tpool name part of a dataset name to select pool", count);
3124
3125	if (sepp)
3126		*sepp = sep;
3127	/*
3128	 * If pool GUID was specified for pool id, replace it with pool name
3129	 */
3130	if (name && (strstr(*target, name) != *target)) {
3131		int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3132
3133		*target = umem_alloc(sz, UMEM_NOFAIL);
3134		(void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3135	}
3136
3137	*configp = name ? match : NULL;
3138
3139	return (name);
3140}
3141
3142int
3143main(int argc, char **argv)
3144{
3145	int i, c;
3146	struct rlimit rl = { 1024, 1024 };
3147	spa_t *spa = NULL;
3148	objset_t *os = NULL;
3149	int dump_all = 1;
3150	int verbose = 0;
3151	int error = 0;
3152	char **searchdirs = NULL;
3153	int nsearch = 0;
3154	char *target;
3155	nvlist_t *policy = NULL;
3156	uint64_t max_txg = UINT64_MAX;
3157	int rewind = ZPOOL_NEVER_REWIND;
3158
3159	(void) setrlimit(RLIMIT_NOFILE, &rl);
3160	(void) enable_extended_FILE_stdio(-1, -1);
3161
3162	dprintf_setup(&argc, argv);
3163
3164	while ((c = getopt(argc, argv, "bcdhilmM:suCDRSAFLXevp:t:U:P")) != -1) {
3165		switch (c) {
3166		case 'b':
3167		case 'c':
3168		case 'd':
3169		case 'h':
3170		case 'i':
3171		case 'l':
3172		case 'm':
3173		case 's':
3174		case 'u':
3175		case 'C':
3176		case 'D':
3177		case 'R':
3178		case 'S':
3179			dump_opt[c]++;
3180			dump_all = 0;
3181			break;
3182		case 'A':
3183		case 'F':
3184		case 'L':
3185		case 'X':
3186		case 'e':
3187		case 'P':
3188			dump_opt[c]++;
3189			break;
3190		case 'v':
3191			verbose++;
3192			break;
3193		case 'M':
3194			max_inflight = strtoull(optarg, NULL, 0);
3195			if (max_inflight == 0) {
3196				(void) fprintf(stderr, "maximum number "
3197				    "of inflight I/Os must be greater "
3198				    "than 0\n");
3199				usage();
3200			}
3201			break;
3202		case 'p':
3203			if (searchdirs == NULL) {
3204				searchdirs = umem_alloc(sizeof (char *),
3205				    UMEM_NOFAIL);
3206			} else {
3207				char **tmp = umem_alloc((nsearch + 1) *
3208				    sizeof (char *), UMEM_NOFAIL);
3209				bcopy(searchdirs, tmp, nsearch *
3210				    sizeof (char *));
3211				umem_free(searchdirs,
3212				    nsearch * sizeof (char *));
3213				searchdirs = tmp;
3214			}
3215			searchdirs[nsearch++] = optarg;
3216			break;
3217		case 't':
3218			max_txg = strtoull(optarg, NULL, 0);
3219			if (max_txg < TXG_INITIAL) {
3220				(void) fprintf(stderr, "incorrect txg "
3221				    "specified: %s\n", optarg);
3222				usage();
3223			}
3224			break;
3225		case 'U':
3226			spa_config_path = optarg;
3227			break;
3228		default:
3229			usage();
3230			break;
3231		}
3232	}
3233
3234	if (!dump_opt['e'] && searchdirs != NULL) {
3235		(void) fprintf(stderr, "-p option requires use of -e\n");
3236		usage();
3237	}
3238
3239	kernel_init(FREAD);
3240	g_zfs = libzfs_init();
3241	ASSERT(g_zfs != NULL);
3242
3243	if (dump_all)
3244		verbose = MAX(verbose, 1);
3245
3246	for (c = 0; c < 256; c++) {
3247		if (dump_all && !strchr("elAFLRSXP", c))
3248			dump_opt[c] = 1;
3249		if (dump_opt[c])
3250			dump_opt[c] += verbose;
3251	}
3252
3253	aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3254	zfs_recover = (dump_opt['A'] > 1);
3255
3256	argc -= optind;
3257	argv += optind;
3258
3259	if (argc < 2 && dump_opt['R'])
3260		usage();
3261	if (argc < 1) {
3262		if (!dump_opt['e'] && dump_opt['C']) {
3263			dump_cachefile(spa_config_path);
3264			return (0);
3265		}
3266		usage();
3267	}
3268
3269	if (dump_opt['l']) {
3270		dump_label(argv[0]);
3271		return (0);
3272	}
3273
3274	if (dump_opt['X'] || dump_opt['F'])
3275		rewind = ZPOOL_DO_REWIND |
3276		    (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3277
3278	if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3279	    nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3280	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3281		fatal("internal error: %s", strerror(ENOMEM));
3282
3283	error = 0;
3284	target = argv[0];
3285
3286	if (dump_opt['e']) {
3287		nvlist_t *cfg = NULL;
3288		char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3289
3290		error = ENOENT;
3291		if (name) {
3292			if (dump_opt['C'] > 1) {
3293				(void) printf("\nConfiguration for import:\n");
3294				dump_nvlist(cfg, 8);
3295			}
3296			if (nvlist_add_nvlist(cfg,
3297			    ZPOOL_REWIND_POLICY, policy) != 0) {
3298				fatal("can't open '%s': %s",
3299				    target, strerror(ENOMEM));
3300			}
3301			if ((error = spa_import(name, cfg, NULL,
3302			    ZFS_IMPORT_MISSING_LOG)) != 0) {
3303				error = spa_import(name, cfg, NULL,
3304				    ZFS_IMPORT_VERBATIM);
3305			}
3306		}
3307	}
3308
3309	if (error == 0) {
3310		if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3311			error = spa_open_rewind(target, &spa, FTAG, policy,
3312			    NULL);
3313			if (error) {
3314				/*
3315				 * If we're missing the log device then
3316				 * try opening the pool after clearing the
3317				 * log state.
3318				 */
3319				mutex_enter(&spa_namespace_lock);
3320				if ((spa = spa_lookup(target)) != NULL &&
3321				    spa->spa_log_state == SPA_LOG_MISSING) {
3322					spa->spa_log_state = SPA_LOG_CLEAR;
3323					error = 0;
3324				}
3325				mutex_exit(&spa_namespace_lock);
3326
3327				if (!error) {
3328					error = spa_open_rewind(target, &spa,
3329					    FTAG, policy, NULL);
3330				}
3331			}
3332		} else {
3333			error = dmu_objset_own(target, DMU_OST_ANY,
3334			    B_TRUE, FTAG, &os);
3335		}
3336	}
3337	nvlist_free(policy);
3338
3339	if (error)
3340		fatal("can't open '%s': %s", target, strerror(error));
3341
3342	argv++;
3343	argc--;
3344	if (!dump_opt['R']) {
3345		if (argc > 0) {
3346			zopt_objects = argc;
3347			zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3348			for (i = 0; i < zopt_objects; i++) {
3349				errno = 0;
3350				zopt_object[i] = strtoull(argv[i], NULL, 0);
3351				if (zopt_object[i] == 0 && errno != 0)
3352					fatal("bad number %s: %s",
3353					    argv[i], strerror(errno));
3354			}
3355		}
3356		if (os != NULL) {
3357			dump_dir(os);
3358		} else if (zopt_objects > 0 && !dump_opt['m']) {
3359			dump_dir(spa->spa_meta_objset);
3360		} else {
3361			dump_zpool(spa);
3362		}
3363	} else {
3364		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3365		flagbits['c'] = ZDB_FLAG_CHECKSUM;
3366		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3367		flagbits['e'] = ZDB_FLAG_BSWAP;
3368		flagbits['g'] = ZDB_FLAG_GBH;
3369		flagbits['i'] = ZDB_FLAG_INDIRECT;
3370		flagbits['p'] = ZDB_FLAG_PHYS;
3371		flagbits['r'] = ZDB_FLAG_RAW;
3372
3373		for (i = 0; i < argc; i++)
3374			zdb_read_block(argv[i], spa);
3375	}
3376
3377	(os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3378
3379	fuid_table_destroy();
3380	sa_loaded = B_FALSE;
3381
3382	libzfs_fini(g_zfs);
3383	kernel_fini();
3384
3385	return (0);
3386}
3387