zdb.c revision 486ae710326c477d7237ab803b67abb9119c0799
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#include <stdio.h>
27#include <stdio_ext.h>
28#include <stdlib.h>
29#include <ctype.h>
30#include <sys/zfs_context.h>
31#include <sys/spa.h>
32#include <sys/spa_impl.h>
33#include <sys/dmu.h>
34#include <sys/zap.h>
35#include <sys/fs/zfs.h>
36#include <sys/zfs_znode.h>
37#include <sys/vdev.h>
38#include <sys/vdev_impl.h>
39#include <sys/metaslab_impl.h>
40#include <sys/dmu_objset.h>
41#include <sys/dsl_dir.h>
42#include <sys/dsl_dataset.h>
43#include <sys/dsl_pool.h>
44#include <sys/dbuf.h>
45#include <sys/zil.h>
46#include <sys/zil_impl.h>
47#include <sys/stat.h>
48#include <sys/resource.h>
49#include <sys/dmu_traverse.h>
50#include <sys/zio_checksum.h>
51#include <sys/zio_compress.h>
52#include <sys/zfs_fuid.h>
53#include <sys/arc.h>
54#include <sys/ddt.h>
55#undef ZFS_MAXNAMELEN
56#undef verify
57#include <libzfs.h>
58
59#define	ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \
60    zio_compress_table[(idx)].ci_name : "UNKNOWN")
61#define	ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \
62    zio_checksum_table[(idx)].ci_name : "UNKNOWN")
63#define	ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \
64    dmu_ot[(idx)].ot_name : "UNKNOWN")
65#define	ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : DMU_OT_NUMTYPES)
66
67const char cmdname[] = "zdb";
68uint8_t dump_opt[256];
69
70typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
71
72extern void dump_intent_log(zilog_t *);
73uint64_t *zopt_object = NULL;
74int zopt_objects = 0;
75libzfs_handle_t *g_zfs;
76
77/*
78 * These libumem hooks provide a reasonable set of defaults for the allocator's
79 * debugging facilities.
80 */
81const char *
82_umem_debug_init()
83{
84	return ("default,verbose"); /* $UMEM_DEBUG setting */
85}
86
87const char *
88_umem_logging_init(void)
89{
90	return ("fail,contents"); /* $UMEM_LOGGING setting */
91}
92
93static void
94usage(void)
95{
96	(void) fprintf(stderr,
97	    "Usage: %s [-CumdibcsvhL] "
98	    "poolname [object...]\n"
99	    "       %s [-div] dataset [object...]\n"
100	    "       %s -m [-L] poolname [vdev [metaslab...]]\n"
101	    "       %s -R poolname vdev:offset:size[:flags]\n"
102	    "       %s -S poolname\n"
103	    "       %s -l device\n"
104	    "       %s -C\n\n",
105	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
106
107	(void) fprintf(stderr, "    Dataset name must include at least one "
108	    "separator character '/' or '@'\n");
109	(void) fprintf(stderr, "    If dataset name is specified, only that "
110	    "dataset is dumped\n");
111	(void) fprintf(stderr, "    If object numbers are specified, only "
112	    "those objects are dumped\n\n");
113	(void) fprintf(stderr, "    Options to control amount of output:\n");
114	(void) fprintf(stderr, "        -u uberblock\n");
115	(void) fprintf(stderr, "        -d dataset(s)\n");
116	(void) fprintf(stderr, "        -i intent logs\n");
117	(void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
118	(void) fprintf(stderr, "        -h pool history\n");
119	(void) fprintf(stderr, "        -b block statistics\n");
120	(void) fprintf(stderr, "        -m metaslabs\n");
121	(void) fprintf(stderr, "        -c checksum all metadata (twice for "
122	    "all data) blocks\n");
123	(void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
124	(void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
125	(void) fprintf(stderr, "        -v verbose (applies to all others)\n");
126	(void) fprintf(stderr, "        -l dump label contents\n");
127	(void) fprintf(stderr, "        -L disable leak tracking (do not "
128	    "load spacemaps)\n");
129	(void) fprintf(stderr, "        -R read and display block from a "
130	    "device\n\n");
131	(void) fprintf(stderr, "    Below options are intended for use "
132	    "with other options (except -l):\n");
133	(void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
134	    "cachefile\n");
135	(void) fprintf(stderr, "        -e pool is exported/destroyed/"
136	    "has altroot/not in a cachefile\n");
137	(void) fprintf(stderr, "        -p <path> -- use one or more with "
138	    "-e to specify path to vdev dir\n");
139	(void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
140	    "searching for uberblocks\n");
141	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
142	    "to make only that option verbose\n");
143	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
144	exit(1);
145}
146
147/*
148 * Called for usage errors that are discovered after a call to spa_open(),
149 * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
150 */
151
152static void
153fatal(const char *fmt, ...)
154{
155	va_list ap;
156
157	va_start(ap, fmt);
158	(void) fprintf(stderr, "%s: ", cmdname);
159	(void) vfprintf(stderr, fmt, ap);
160	va_end(ap);
161	(void) fprintf(stderr, "\n");
162
163	exit(1);
164}
165
166/* ARGSUSED */
167static void
168dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
169{
170	nvlist_t *nv;
171	size_t nvsize = *(uint64_t *)data;
172	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
173
174	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
175
176	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
177
178	umem_free(packed, nvsize);
179
180	dump_nvlist(nv, 8);
181
182	nvlist_free(nv);
183}
184
185const char dump_zap_stars[] = "****************************************";
186const int dump_zap_width = sizeof (dump_zap_stars) - 1;
187
188static void
189dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
190{
191	int i;
192	int minidx = ZAP_HISTOGRAM_SIZE - 1;
193	int maxidx = 0;
194	uint64_t max = 0;
195
196	for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
197		if (histo[i] > max)
198			max = histo[i];
199		if (histo[i] > 0 && i > maxidx)
200			maxidx = i;
201		if (histo[i] > 0 && i < minidx)
202			minidx = i;
203	}
204
205	if (max < dump_zap_width)
206		max = dump_zap_width;
207
208	for (i = minidx; i <= maxidx; i++)
209		(void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
210		    &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
211}
212
213static void
214dump_zap_stats(objset_t *os, uint64_t object)
215{
216	int error;
217	zap_stats_t zs;
218
219	error = zap_get_stats(os, object, &zs);
220	if (error)
221		return;
222
223	if (zs.zs_ptrtbl_len == 0) {
224		ASSERT(zs.zs_num_blocks == 1);
225		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
226		    (u_longlong_t)zs.zs_blocksize,
227		    (u_longlong_t)zs.zs_num_entries);
228		return;
229	}
230
231	(void) printf("\tFat ZAP stats:\n");
232
233	(void) printf("\t\tPointer table:\n");
234	(void) printf("\t\t\t%llu elements\n",
235	    (u_longlong_t)zs.zs_ptrtbl_len);
236	(void) printf("\t\t\tzt_blk: %llu\n",
237	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
238	(void) printf("\t\t\tzt_numblks: %llu\n",
239	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
240	(void) printf("\t\t\tzt_shift: %llu\n",
241	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
242	(void) printf("\t\t\tzt_blks_copied: %llu\n",
243	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
244	(void) printf("\t\t\tzt_nextblk: %llu\n",
245	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
246
247	(void) printf("\t\tZAP entries: %llu\n",
248	    (u_longlong_t)zs.zs_num_entries);
249	(void) printf("\t\tLeaf blocks: %llu\n",
250	    (u_longlong_t)zs.zs_num_leafs);
251	(void) printf("\t\tTotal blocks: %llu\n",
252	    (u_longlong_t)zs.zs_num_blocks);
253	(void) printf("\t\tzap_block_type: 0x%llx\n",
254	    (u_longlong_t)zs.zs_block_type);
255	(void) printf("\t\tzap_magic: 0x%llx\n",
256	    (u_longlong_t)zs.zs_magic);
257	(void) printf("\t\tzap_salt: 0x%llx\n",
258	    (u_longlong_t)zs.zs_salt);
259
260	(void) printf("\t\tLeafs with 2^n pointers:\n");
261	dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
262
263	(void) printf("\t\tBlocks with n*5 entries:\n");
264	dump_zap_histogram(zs.zs_blocks_with_n5_entries);
265
266	(void) printf("\t\tBlocks n/10 full:\n");
267	dump_zap_histogram(zs.zs_blocks_n_tenths_full);
268
269	(void) printf("\t\tEntries with n chunks:\n");
270	dump_zap_histogram(zs.zs_entries_using_n_chunks);
271
272	(void) printf("\t\tBuckets with n entries:\n");
273	dump_zap_histogram(zs.zs_buckets_with_n_entries);
274}
275
276/*ARGSUSED*/
277static void
278dump_none(objset_t *os, uint64_t object, void *data, size_t size)
279{
280}
281
282/*ARGSUSED*/
283static void
284dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
285{
286	(void) printf("\tUNKNOWN OBJECT TYPE\n");
287}
288
289/*ARGSUSED*/
290void
291dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
292{
293}
294
295/*ARGSUSED*/
296static void
297dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
298{
299}
300
301/*ARGSUSED*/
302static void
303dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
304{
305	zap_cursor_t zc;
306	zap_attribute_t attr;
307	void *prop;
308	int i;
309
310	dump_zap_stats(os, object);
311	(void) printf("\n");
312
313	for (zap_cursor_init(&zc, os, object);
314	    zap_cursor_retrieve(&zc, &attr) == 0;
315	    zap_cursor_advance(&zc)) {
316		(void) printf("\t\t%s = ", attr.za_name);
317		if (attr.za_num_integers == 0) {
318			(void) printf("\n");
319			continue;
320		}
321		prop = umem_zalloc(attr.za_num_integers *
322		    attr.za_integer_length, UMEM_NOFAIL);
323		(void) zap_lookup(os, object, attr.za_name,
324		    attr.za_integer_length, attr.za_num_integers, prop);
325		if (attr.za_integer_length == 1) {
326			(void) printf("%s", (char *)prop);
327		} else {
328			for (i = 0; i < attr.za_num_integers; i++) {
329				switch (attr.za_integer_length) {
330				case 2:
331					(void) printf("%u ",
332					    ((uint16_t *)prop)[i]);
333					break;
334				case 4:
335					(void) printf("%u ",
336					    ((uint32_t *)prop)[i]);
337					break;
338				case 8:
339					(void) printf("%lld ",
340					    (u_longlong_t)((int64_t *)prop)[i]);
341					break;
342				}
343			}
344		}
345		(void) printf("\n");
346		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
347	}
348	zap_cursor_fini(&zc);
349}
350
351/*ARGSUSED*/
352static void
353dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
354{
355	dump_zap_stats(os, object);
356	/* contents are printed elsewhere, properly decoded */
357}
358
359/*ARGSUSED*/
360static void
361dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
362{
363	zap_cursor_t zc;
364	zap_attribute_t attr;
365	const char *typenames[] = {
366		/* 0 */ "not specified",
367		/* 1 */ "FIFO",
368		/* 2 */ "Character Device",
369		/* 3 */ "3 (invalid)",
370		/* 4 */ "Directory",
371		/* 5 */ "5 (invalid)",
372		/* 6 */ "Block Device",
373		/* 7 */ "7 (invalid)",
374		/* 8 */ "Regular File",
375		/* 9 */ "9 (invalid)",
376		/* 10 */ "Symbolic Link",
377		/* 11 */ "11 (invalid)",
378		/* 12 */ "Socket",
379		/* 13 */ "Door",
380		/* 14 */ "Event Port",
381		/* 15 */ "15 (invalid)",
382	};
383
384	dump_zap_stats(os, object);
385	(void) printf("\n");
386
387	for (zap_cursor_init(&zc, os, object);
388	    zap_cursor_retrieve(&zc, &attr) == 0;
389	    zap_cursor_advance(&zc)) {
390		(void) printf("\t\t%s = %lld (type: %s)\n",
391		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
392		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
393	}
394	zap_cursor_fini(&zc);
395}
396
397static void
398dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
399{
400	uint64_t alloc, offset, entry;
401	uint8_t mapshift = sm->sm_shift;
402	uint64_t mapstart = sm->sm_start;
403	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
404			    "INVALID", "INVALID", "INVALID", "INVALID" };
405
406	if (smo->smo_object == 0)
407		return;
408
409	/*
410	 * Print out the freelist entries in both encoded and decoded form.
411	 */
412	alloc = 0;
413	for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
414		VERIFY(0 == dmu_read(os, smo->smo_object, offset,
415		    sizeof (entry), &entry, DMU_READ_PREFETCH));
416		if (SM_DEBUG_DECODE(entry)) {
417			(void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
418			    (u_longlong_t)(offset / sizeof (entry)),
419			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
420			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
421			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
422		} else {
423			(void) printf("\t    [%6llu]    %c  range:"
424			    " %010llx-%010llx  size: %06llx\n",
425			    (u_longlong_t)(offset / sizeof (entry)),
426			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
427			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
428			    mapshift) + mapstart),
429			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
430			    mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
431			    mapshift)),
432			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
433			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
434				alloc += SM_RUN_DECODE(entry) << mapshift;
435			else
436				alloc -= SM_RUN_DECODE(entry) << mapshift;
437		}
438	}
439	if (alloc != smo->smo_alloc) {
440		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
441		    "with space map summary (%llu)\n",
442		    (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
443	}
444}
445
446static void
447dump_metaslab_stats(metaslab_t *msp)
448{
449	char maxbuf[5];
450	space_map_t *sm = &msp->ms_map;
451	avl_tree_t *t = sm->sm_pp_root;
452	int free_pct = sm->sm_space * 100 / sm->sm_size;
453
454	nicenum(space_map_maxsize(sm), maxbuf);
455
456	(void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
457	    "segments", avl_numnodes(t), "maxsize", maxbuf,
458	    "freepct", free_pct);
459}
460
461static void
462dump_metaslab(metaslab_t *msp)
463{
464	vdev_t *vd = msp->ms_group->mg_vd;
465	spa_t *spa = vd->vdev_spa;
466	space_map_t *sm = &msp->ms_map;
467	space_map_obj_t *smo = &msp->ms_smo;
468	char freebuf[5];
469
470	nicenum(sm->sm_size - smo->smo_alloc, freebuf);
471
472	(void) printf(
473	    "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
474	    (u_longlong_t)(sm->sm_start / sm->sm_size),
475	    (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
476
477	if (dump_opt['m'] > 1 && !dump_opt['L']) {
478		mutex_enter(&msp->ms_lock);
479		space_map_load_wait(sm);
480		if (!sm->sm_loaded &&
481		    (smo->smo_object != 0 || dump_opt['m'] > 2)) {
482			VERIFY(space_map_load(sm, zfs_metaslab_ops,
483			    SM_FREE, smo, spa->spa_meta_objset) == 0);
484			dump_metaslab_stats(msp);
485			space_map_unload(sm);
486		}
487		mutex_exit(&msp->ms_lock);
488	}
489
490	if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
491		ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
492
493		mutex_enter(&msp->ms_lock);
494		dump_spacemap(spa->spa_meta_objset, smo, sm);
495		mutex_exit(&msp->ms_lock);
496	}
497}
498
499static void
500print_vdev_metaslab_header(vdev_t *vd)
501{
502	(void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
503	    (u_longlong_t)vd->vdev_id,
504	    "metaslabs", (u_longlong_t)vd->vdev_ms_count,
505	    "offset", "spacemap", "free");
506	(void) printf("\t%15s   %19s   %15s   %10s\n",
507	    "---------------", "-------------------",
508	    "---------------", "-------------");
509}
510
511static void
512dump_metaslabs(spa_t *spa)
513{
514	vdev_t *vd, *rvd = spa->spa_root_vdev;
515	uint64_t m, c = 0, children = rvd->vdev_children;
516
517	(void) printf("\nMetaslabs:\n");
518
519	if (!dump_opt['d'] && zopt_objects > 0) {
520		c = zopt_object[0];
521
522		if (c >= children)
523			(void) fatal("bad vdev id: %llu", (u_longlong_t)c);
524
525		if (zopt_objects > 1) {
526			vd = rvd->vdev_child[c];
527			print_vdev_metaslab_header(vd);
528
529			for (m = 1; m < zopt_objects; m++) {
530				if (zopt_object[m] < vd->vdev_ms_count)
531					dump_metaslab(
532					    vd->vdev_ms[zopt_object[m]]);
533				else
534					(void) fprintf(stderr, "bad metaslab "
535					    "number %llu\n",
536					    (u_longlong_t)zopt_object[m]);
537			}
538			(void) printf("\n");
539			return;
540		}
541		children = c + 1;
542	}
543	for (; c < children; c++) {
544		vd = rvd->vdev_child[c];
545		print_vdev_metaslab_header(vd);
546
547		for (m = 0; m < vd->vdev_ms_count; m++)
548			dump_metaslab(vd->vdev_ms[m]);
549		(void) printf("\n");
550	}
551}
552
553static void
554dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
555{
556	const ddt_phys_t *ddp = dde->dde_phys;
557	const ddt_key_t *ddk = &dde->dde_key;
558	char *types[4] = { "ditto", "single", "double", "triple" };
559	char blkbuf[BP_SPRINTF_LEN];
560	blkptr_t blk;
561
562	for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
563		if (ddp->ddp_phys_birth == 0)
564			continue;
565		ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
566		sprintf_blkptr(blkbuf, &blk);
567		(void) printf("index %llx refcnt %llu %s %s\n",
568		    (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
569		    types[p], blkbuf);
570	}
571}
572
573static void
574dump_dedup_ratio(const ddt_stat_t *dds)
575{
576	double rL, rP, rD, D, dedup, compress, copies;
577
578	if (dds->dds_blocks == 0)
579		return;
580
581	rL = (double)dds->dds_ref_lsize;
582	rP = (double)dds->dds_ref_psize;
583	rD = (double)dds->dds_ref_dsize;
584	D = (double)dds->dds_dsize;
585
586	dedup = rD / D;
587	compress = rL / rP;
588	copies = rD / rP;
589
590	(void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
591	    "dedup * compress / copies = %.2f\n\n",
592	    dedup, compress, copies, dedup * compress / copies);
593}
594
595static void
596dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
597{
598	char name[DDT_NAMELEN];
599	ddt_entry_t dde;
600	uint64_t walk = 0;
601	dmu_object_info_t doi;
602	uint64_t count, dspace, mspace;
603	int error;
604
605	error = ddt_object_info(ddt, type, class, &doi);
606
607	if (error == ENOENT)
608		return;
609	ASSERT(error == 0);
610
611	count = ddt_object_count(ddt, type, class);
612	dspace = doi.doi_physical_blocks_512 << 9;
613	mspace = doi.doi_fill_count * doi.doi_data_block_size;
614
615	ASSERT(count != 0);	/* we should have destroyed it */
616
617	ddt_object_name(ddt, type, class, name);
618
619	(void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
620	    name,
621	    (u_longlong_t)count,
622	    (u_longlong_t)(dspace / count),
623	    (u_longlong_t)(mspace / count));
624
625	if (dump_opt['D'] < 3)
626		return;
627
628	zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
629
630	if (dump_opt['D'] < 4)
631		return;
632
633	if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
634		return;
635
636	(void) printf("%s contents:\n\n", name);
637
638	while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
639		dump_dde(ddt, &dde, walk);
640
641	ASSERT(error == ENOENT);
642
643	(void) printf("\n");
644}
645
646static void
647dump_all_ddts(spa_t *spa)
648{
649	ddt_histogram_t ddh_total = { 0 };
650	ddt_stat_t dds_total = { 0 };
651
652	for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
653		ddt_t *ddt = spa->spa_ddt[c];
654		for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
655			for (enum ddt_class class = 0; class < DDT_CLASSES;
656			    class++) {
657				dump_ddt(ddt, type, class);
658			}
659		}
660	}
661
662	ddt_get_dedup_stats(spa, &dds_total);
663
664	if (dds_total.dds_blocks == 0) {
665		(void) printf("All DDTs are empty\n");
666		return;
667	}
668
669	(void) printf("\n");
670
671	if (dump_opt['D'] > 1) {
672		(void) printf("DDT histogram (aggregated over all DDTs):\n");
673		ddt_get_dedup_histogram(spa, &ddh_total);
674		zpool_dump_ddt(&dds_total, &ddh_total);
675	}
676
677	dump_dedup_ratio(&dds_total);
678}
679
680static void
681dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
682{
683	char *prefix = (void *)sm;
684
685	(void) printf("%s [%llu,%llu) length %llu\n",
686	    prefix,
687	    (u_longlong_t)start,
688	    (u_longlong_t)(start + size),
689	    (u_longlong_t)(size));
690}
691
692static void
693dump_dtl(vdev_t *vd, int indent)
694{
695	spa_t *spa = vd->vdev_spa;
696	boolean_t required;
697	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
698	char prefix[256];
699
700	spa_vdev_state_enter(spa, SCL_NONE);
701	required = vdev_dtl_required(vd);
702	(void) spa_vdev_state_exit(spa, NULL, 0);
703
704	if (indent == 0)
705		(void) printf("\nDirty time logs:\n\n");
706
707	(void) printf("\t%*s%s [%s]\n", indent, "",
708	    vd->vdev_path ? vd->vdev_path :
709	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
710	    required ? "DTL-required" : "DTL-expendable");
711
712	for (int t = 0; t < DTL_TYPES; t++) {
713		space_map_t *sm = &vd->vdev_dtl[t];
714		if (sm->sm_space == 0)
715			continue;
716		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
717		    indent + 2, "", name[t]);
718		mutex_enter(sm->sm_lock);
719		space_map_walk(sm, dump_dtl_seg, (void *)prefix);
720		mutex_exit(sm->sm_lock);
721		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
722			dump_spacemap(spa->spa_meta_objset,
723			    &vd->vdev_dtl_smo, sm);
724	}
725
726	for (int c = 0; c < vd->vdev_children; c++)
727		dump_dtl(vd->vdev_child[c], indent + 4);
728}
729
730static void
731dump_history(spa_t *spa)
732{
733	nvlist_t **events = NULL;
734	char buf[SPA_MAXBLOCKSIZE];
735	uint64_t resid, len, off = 0;
736	uint_t num = 0;
737	int error;
738	time_t tsec;
739	struct tm t;
740	char tbuf[30];
741	char internalstr[MAXPATHLEN];
742
743	do {
744		len = sizeof (buf);
745
746		if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
747			(void) fprintf(stderr, "Unable to read history: "
748			    "error %d\n", error);
749			return;
750		}
751
752		if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
753			break;
754
755		off -= resid;
756	} while (len != 0);
757
758	(void) printf("\nHistory:\n");
759	for (int i = 0; i < num; i++) {
760		uint64_t time, txg, ievent;
761		char *cmd, *intstr;
762
763		if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
764		    &time) != 0)
765			continue;
766		if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
767		    &cmd) != 0) {
768			if (nvlist_lookup_uint64(events[i],
769			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
770				continue;
771			verify(nvlist_lookup_uint64(events[i],
772			    ZPOOL_HIST_TXG, &txg) == 0);
773			verify(nvlist_lookup_string(events[i],
774			    ZPOOL_HIST_INT_STR, &intstr) == 0);
775			if (ievent >= LOG_END)
776				continue;
777
778			(void) snprintf(internalstr,
779			    sizeof (internalstr),
780			    "[internal %s txg:%lld] %s",
781			    hist_event_table[ievent], txg,
782			    intstr);
783			cmd = internalstr;
784		}
785		tsec = time;
786		(void) localtime_r(&tsec, &t);
787		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
788		(void) printf("%s %s\n", tbuf, cmd);
789	}
790}
791
792/*ARGSUSED*/
793static void
794dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
795{
796}
797
798static uint64_t
799blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
800{
801	if (dnp == NULL) {
802		ASSERT(zb->zb_level < 0);
803		if (zb->zb_object == 0)
804			return (zb->zb_blkid);
805		return (zb->zb_blkid * BP_GET_LSIZE(bp));
806	}
807
808	ASSERT(zb->zb_level >= 0);
809
810	return ((zb->zb_blkid <<
811	    (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
812	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
813}
814
815static void
816sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp)
817{
818	dva_t *dva = bp->blk_dva;
819	int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
820
821	if (dump_opt['b'] >= 5) {
822		sprintf_blkptr(blkbuf, bp);
823		return;
824	}
825
826	blkbuf[0] = '\0';
827
828	for (int i = 0; i < ndvas; i++)
829		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
830		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
831		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
832		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
833
834	(void) sprintf(blkbuf + strlen(blkbuf),
835	    "%llxL/%llxP F=%llu B=%llu/%llu",
836	    (u_longlong_t)BP_GET_LSIZE(bp),
837	    (u_longlong_t)BP_GET_PSIZE(bp),
838	    (u_longlong_t)bp->blk_fill,
839	    (u_longlong_t)bp->blk_birth,
840	    (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
841}
842
843static void
844print_indirect(blkptr_t *bp, const zbookmark_t *zb,
845    const dnode_phys_t *dnp)
846{
847	char blkbuf[BP_SPRINTF_LEN];
848	int l;
849
850	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
851	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
852
853	(void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
854
855	ASSERT(zb->zb_level >= 0);
856
857	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
858		if (l == zb->zb_level) {
859			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
860		} else {
861			(void) printf(" ");
862		}
863	}
864
865	sprintf_blkptr_compact(blkbuf, bp);
866	(void) printf("%s\n", blkbuf);
867}
868
869static int
870visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
871    blkptr_t *bp, const zbookmark_t *zb)
872{
873	int err = 0;
874
875	if (bp->blk_birth == 0)
876		return (0);
877
878	print_indirect(bp, zb, dnp);
879
880	if (BP_GET_LEVEL(bp) > 0) {
881		uint32_t flags = ARC_WAIT;
882		int i;
883		blkptr_t *cbp;
884		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
885		arc_buf_t *buf;
886		uint64_t fill = 0;
887
888		err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
889		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
890		if (err)
891			return (err);
892
893		/* recursively visit blocks below this */
894		cbp = buf->b_data;
895		for (i = 0; i < epb; i++, cbp++) {
896			zbookmark_t czb;
897
898			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
899			    zb->zb_level - 1,
900			    zb->zb_blkid * epb + i);
901			err = visit_indirect(spa, dnp, cbp, &czb);
902			if (err)
903				break;
904			fill += cbp->blk_fill;
905		}
906		if (!err)
907			ASSERT3U(fill, ==, bp->blk_fill);
908		(void) arc_buf_remove_ref(buf, &buf);
909	}
910
911	return (err);
912}
913
914/*ARGSUSED*/
915static void
916dump_indirect(dnode_t *dn)
917{
918	dnode_phys_t *dnp = dn->dn_phys;
919	int j;
920	zbookmark_t czb;
921
922	(void) printf("Indirect blocks:\n");
923
924	SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
925	    dn->dn_object, dnp->dn_nlevels - 1, 0);
926	for (j = 0; j < dnp->dn_nblkptr; j++) {
927		czb.zb_blkid = j;
928		(void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
929		    &dnp->dn_blkptr[j], &czb);
930	}
931
932	(void) printf("\n");
933}
934
935/*ARGSUSED*/
936static void
937dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
938{
939	dsl_dir_phys_t *dd = data;
940	time_t crtime;
941	char nice[6];
942
943	if (dd == NULL)
944		return;
945
946	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
947
948	crtime = dd->dd_creation_time;
949	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
950	(void) printf("\t\thead_dataset_obj = %llu\n",
951	    (u_longlong_t)dd->dd_head_dataset_obj);
952	(void) printf("\t\tparent_dir_obj = %llu\n",
953	    (u_longlong_t)dd->dd_parent_obj);
954	(void) printf("\t\torigin_obj = %llu\n",
955	    (u_longlong_t)dd->dd_origin_obj);
956	(void) printf("\t\tchild_dir_zapobj = %llu\n",
957	    (u_longlong_t)dd->dd_child_dir_zapobj);
958	nicenum(dd->dd_used_bytes, nice);
959	(void) printf("\t\tused_bytes = %s\n", nice);
960	nicenum(dd->dd_compressed_bytes, nice);
961	(void) printf("\t\tcompressed_bytes = %s\n", nice);
962	nicenum(dd->dd_uncompressed_bytes, nice);
963	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
964	nicenum(dd->dd_quota, nice);
965	(void) printf("\t\tquota = %s\n", nice);
966	nicenum(dd->dd_reserved, nice);
967	(void) printf("\t\treserved = %s\n", nice);
968	(void) printf("\t\tprops_zapobj = %llu\n",
969	    (u_longlong_t)dd->dd_props_zapobj);
970	(void) printf("\t\tdeleg_zapobj = %llu\n",
971	    (u_longlong_t)dd->dd_deleg_zapobj);
972	(void) printf("\t\tflags = %llx\n",
973	    (u_longlong_t)dd->dd_flags);
974
975#define	DO(which) \
976	nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
977	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
978	DO(HEAD);
979	DO(SNAP);
980	DO(CHILD);
981	DO(CHILD_RSRV);
982	DO(REFRSRV);
983#undef DO
984}
985
986/*ARGSUSED*/
987static void
988dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
989{
990	dsl_dataset_phys_t *ds = data;
991	time_t crtime;
992	char used[6], compressed[6], uncompressed[6], unique[6];
993	char blkbuf[BP_SPRINTF_LEN];
994
995	if (ds == NULL)
996		return;
997
998	ASSERT(size == sizeof (*ds));
999	crtime = ds->ds_creation_time;
1000	nicenum(ds->ds_used_bytes, used);
1001	nicenum(ds->ds_compressed_bytes, compressed);
1002	nicenum(ds->ds_uncompressed_bytes, uncompressed);
1003	nicenum(ds->ds_unique_bytes, unique);
1004	sprintf_blkptr(blkbuf, &ds->ds_bp);
1005
1006	(void) printf("\t\tdir_obj = %llu\n",
1007	    (u_longlong_t)ds->ds_dir_obj);
1008	(void) printf("\t\tprev_snap_obj = %llu\n",
1009	    (u_longlong_t)ds->ds_prev_snap_obj);
1010	(void) printf("\t\tprev_snap_txg = %llu\n",
1011	    (u_longlong_t)ds->ds_prev_snap_txg);
1012	(void) printf("\t\tnext_snap_obj = %llu\n",
1013	    (u_longlong_t)ds->ds_next_snap_obj);
1014	(void) printf("\t\tsnapnames_zapobj = %llu\n",
1015	    (u_longlong_t)ds->ds_snapnames_zapobj);
1016	(void) printf("\t\tnum_children = %llu\n",
1017	    (u_longlong_t)ds->ds_num_children);
1018	(void) printf("\t\tuserrefs_obj = %llu\n",
1019	    (u_longlong_t)ds->ds_userrefs_obj);
1020	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1021	(void) printf("\t\tcreation_txg = %llu\n",
1022	    (u_longlong_t)ds->ds_creation_txg);
1023	(void) printf("\t\tdeadlist_obj = %llu\n",
1024	    (u_longlong_t)ds->ds_deadlist_obj);
1025	(void) printf("\t\tused_bytes = %s\n", used);
1026	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
1027	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1028	(void) printf("\t\tunique = %s\n", unique);
1029	(void) printf("\t\tfsid_guid = %llu\n",
1030	    (u_longlong_t)ds->ds_fsid_guid);
1031	(void) printf("\t\tguid = %llu\n",
1032	    (u_longlong_t)ds->ds_guid);
1033	(void) printf("\t\tflags = %llx\n",
1034	    (u_longlong_t)ds->ds_flags);
1035	(void) printf("\t\tnext_clones_obj = %llu\n",
1036	    (u_longlong_t)ds->ds_next_clones_obj);
1037	(void) printf("\t\tprops_obj = %llu\n",
1038	    (u_longlong_t)ds->ds_props_obj);
1039	(void) printf("\t\tbp = %s\n", blkbuf);
1040}
1041
1042static void
1043dump_bplist(objset_t *mos, uint64_t object, char *name)
1044{
1045	bplist_t bpl = { 0 };
1046	blkptr_t blk, *bp = &blk;
1047	uint64_t itor = 0;
1048	char bytes[6];
1049	char comp[6];
1050	char uncomp[6];
1051
1052	if (dump_opt['d'] < 3)
1053		return;
1054
1055	bplist_init(&bpl);
1056	VERIFY(0 == bplist_open(&bpl, mos, object));
1057	if (bplist_empty(&bpl)) {
1058		bplist_close(&bpl);
1059		bplist_fini(&bpl);
1060		return;
1061	}
1062
1063	nicenum(bpl.bpl_phys->bpl_bytes, bytes);
1064	if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) {
1065		nicenum(bpl.bpl_phys->bpl_comp, comp);
1066		nicenum(bpl.bpl_phys->bpl_uncomp, uncomp);
1067		(void) printf("\n    %s: %llu entries, %s (%s/%s comp)\n",
1068		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries,
1069		    bytes, comp, uncomp);
1070	} else {
1071		(void) printf("\n    %s: %llu entries, %s\n",
1072		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes);
1073	}
1074
1075	if (dump_opt['d'] < 5) {
1076		bplist_close(&bpl);
1077		bplist_fini(&bpl);
1078		return;
1079	}
1080
1081	(void) printf("\n");
1082
1083	while (bplist_iterate(&bpl, &itor, bp) == 0) {
1084		char blkbuf[BP_SPRINTF_LEN];
1085
1086		ASSERT(bp->blk_birth != 0);
1087		sprintf_blkptr_compact(blkbuf, bp);
1088		(void) printf("\tItem %3llu: %s\n",
1089		    (u_longlong_t)itor - 1, blkbuf);
1090	}
1091
1092	bplist_close(&bpl);
1093	bplist_fini(&bpl);
1094}
1095
1096static avl_tree_t idx_tree;
1097static avl_tree_t domain_tree;
1098static boolean_t fuid_table_loaded;
1099
1100static void
1101fuid_table_destroy()
1102{
1103	if (fuid_table_loaded) {
1104		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1105		fuid_table_loaded = B_FALSE;
1106	}
1107}
1108
1109/*
1110 * print uid or gid information.
1111 * For normal POSIX id just the id is printed in decimal format.
1112 * For CIFS files with FUID the fuid is printed in hex followed by
1113 * the doman-rid string.
1114 */
1115static void
1116print_idstr(uint64_t id, const char *id_type)
1117{
1118	if (FUID_INDEX(id)) {
1119		char *domain;
1120
1121		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1122		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
1123		    (u_longlong_t)id, domain, (int)FUID_RID(id));
1124	} else {
1125		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1126	}
1127
1128}
1129
1130static void
1131dump_uidgid(objset_t *os, znode_phys_t *zp)
1132{
1133	uint32_t uid_idx, gid_idx;
1134
1135	uid_idx = FUID_INDEX(zp->zp_uid);
1136	gid_idx = FUID_INDEX(zp->zp_gid);
1137
1138	/* Load domain table, if not already loaded */
1139	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1140		uint64_t fuid_obj;
1141
1142		/* first find the fuid object.  It lives in the master node */
1143		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1144		    8, 1, &fuid_obj) == 0);
1145		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1146		(void) zfs_fuid_table_load(os, fuid_obj,
1147		    &idx_tree, &domain_tree);
1148		fuid_table_loaded = B_TRUE;
1149	}
1150
1151	print_idstr(zp->zp_uid, "uid");
1152	print_idstr(zp->zp_gid, "gid");
1153}
1154
1155/*ARGSUSED*/
1156static void
1157dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1158{
1159	znode_phys_t *zp = data;
1160	time_t z_crtime, z_atime, z_mtime, z_ctime;
1161	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
1162	int error;
1163
1164	ASSERT(size >= sizeof (znode_phys_t));
1165
1166	error = zfs_obj_to_path(os, object, path, sizeof (path));
1167	if (error != 0) {
1168		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1169		    (u_longlong_t)object);
1170	}
1171
1172	if (dump_opt['d'] < 3) {
1173		(void) printf("\t%s\n", path);
1174		return;
1175	}
1176
1177	z_crtime = (time_t)zp->zp_crtime[0];
1178	z_atime = (time_t)zp->zp_atime[0];
1179	z_mtime = (time_t)zp->zp_mtime[0];
1180	z_ctime = (time_t)zp->zp_ctime[0];
1181
1182	(void) printf("\tpath	%s\n", path);
1183	dump_uidgid(os, zp);
1184	(void) printf("\tatime	%s", ctime(&z_atime));
1185	(void) printf("\tmtime	%s", ctime(&z_mtime));
1186	(void) printf("\tctime	%s", ctime(&z_ctime));
1187	(void) printf("\tcrtime	%s", ctime(&z_crtime));
1188	(void) printf("\tgen	%llu\n", (u_longlong_t)zp->zp_gen);
1189	(void) printf("\tmode	%llo\n", (u_longlong_t)zp->zp_mode);
1190	(void) printf("\tsize	%llu\n", (u_longlong_t)zp->zp_size);
1191	(void) printf("\tparent	%llu\n", (u_longlong_t)zp->zp_parent);
1192	(void) printf("\tlinks	%llu\n", (u_longlong_t)zp->zp_links);
1193	(void) printf("\txattr	%llu\n", (u_longlong_t)zp->zp_xattr);
1194	(void) printf("\trdev	0x%016llx\n", (u_longlong_t)zp->zp_rdev);
1195}
1196
1197/*ARGSUSED*/
1198static void
1199dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1200{
1201}
1202
1203/*ARGSUSED*/
1204static void
1205dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1206{
1207}
1208
1209static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1210	dump_none,		/* unallocated			*/
1211	dump_zap,		/* object directory		*/
1212	dump_uint64,		/* object array			*/
1213	dump_none,		/* packed nvlist		*/
1214	dump_packed_nvlist,	/* packed nvlist size		*/
1215	dump_none,		/* bplist			*/
1216	dump_none,		/* bplist header		*/
1217	dump_none,		/* SPA space map header		*/
1218	dump_none,		/* SPA space map		*/
1219	dump_none,		/* ZIL intent log		*/
1220	dump_dnode,		/* DMU dnode			*/
1221	dump_dmu_objset,	/* DMU objset			*/
1222	dump_dsl_dir,		/* DSL directory		*/
1223	dump_zap,		/* DSL directory child map	*/
1224	dump_zap,		/* DSL dataset snap map		*/
1225	dump_zap,		/* DSL props			*/
1226	dump_dsl_dataset,	/* DSL dataset			*/
1227	dump_znode,		/* ZFS znode			*/
1228	dump_acl,		/* ZFS V0 ACL			*/
1229	dump_uint8,		/* ZFS plain file		*/
1230	dump_zpldir,		/* ZFS directory		*/
1231	dump_zap,		/* ZFS master node		*/
1232	dump_zap,		/* ZFS delete queue		*/
1233	dump_uint8,		/* zvol object			*/
1234	dump_zap,		/* zvol prop			*/
1235	dump_uint8,		/* other uint8[]		*/
1236	dump_uint64,		/* other uint64[]		*/
1237	dump_zap,		/* other ZAP			*/
1238	dump_zap,		/* persistent error log		*/
1239	dump_uint8,		/* SPA history			*/
1240	dump_uint64,		/* SPA history offsets		*/
1241	dump_zap,		/* Pool properties		*/
1242	dump_zap,		/* DSL permissions		*/
1243	dump_acl,		/* ZFS ACL			*/
1244	dump_uint8,		/* ZFS SYSACL			*/
1245	dump_none,		/* FUID nvlist			*/
1246	dump_packed_nvlist,	/* FUID nvlist size		*/
1247	dump_zap,		/* DSL dataset next clones	*/
1248	dump_zap,		/* DSL scrub queue		*/
1249	dump_zap,		/* ZFS user/group used		*/
1250	dump_zap,		/* ZFS user/group quota		*/
1251	dump_zap,		/* snapshot refcount tags	*/
1252	dump_ddt_zap,		/* DDT ZAP object		*/
1253	dump_zap,		/* DDT statistics		*/
1254	dump_unknown		/* Unknown type, must be last	*/
1255};
1256
1257static void
1258dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1259{
1260	dmu_buf_t *db = NULL;
1261	dmu_object_info_t doi;
1262	dnode_t *dn;
1263	void *bonus = NULL;
1264	size_t bsize = 0;
1265	char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], fill[7];
1266	char aux[50];
1267	int error;
1268
1269	if (*print_header) {
1270		(void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1271		    "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1272		    "%full", "type");
1273		*print_header = 0;
1274	}
1275
1276	if (object == 0) {
1277		dn = os->os_meta_dnode;
1278	} else {
1279		error = dmu_bonus_hold(os, object, FTAG, &db);
1280		if (error)
1281			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1282			    object, error);
1283		bonus = db->db_data;
1284		bsize = db->db_size;
1285		dn = ((dmu_buf_impl_t *)db)->db_dnode;
1286	}
1287	dmu_object_info_from_dnode(dn, &doi);
1288
1289	nicenum(doi.doi_metadata_block_size, iblk);
1290	nicenum(doi.doi_data_block_size, dblk);
1291	nicenum(doi.doi_max_offset, lsize);
1292	nicenum(doi.doi_physical_blocks_512 << 9, asize);
1293	nicenum(doi.doi_bonus_size, bonus_size);
1294	(void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1295	    doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1296	    doi.doi_max_offset);
1297
1298	aux[0] = '\0';
1299
1300	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1301		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1302		    ZDB_CHECKSUM_NAME(doi.doi_checksum));
1303	}
1304
1305	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1306		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1307		    ZDB_COMPRESS_NAME(doi.doi_compress));
1308	}
1309
1310	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1311	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1312	    asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1313
1314	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1315		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1316		    "", "", "", "", "", bonus_size, "bonus",
1317		    ZDB_OT_NAME(doi.doi_bonus_type));
1318	}
1319
1320	if (verbosity >= 4) {
1321		(void) printf("\tdnode flags: %s%s\n",
1322		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1323		    "USED_BYTES " : "",
1324		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1325		    "USERUSED_ACCOUNTED " : "");
1326		(void) printf("\tdnode maxblkid: %llu\n",
1327		    (longlong_t)dn->dn_phys->dn_maxblkid);
1328
1329		object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1330		    bonus, bsize);
1331		object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1332		*print_header = 1;
1333	}
1334
1335	if (verbosity >= 5)
1336		dump_indirect(dn);
1337
1338	if (verbosity >= 5) {
1339		/*
1340		 * Report the list of segments that comprise the object.
1341		 */
1342		uint64_t start = 0;
1343		uint64_t end;
1344		uint64_t blkfill = 1;
1345		int minlvl = 1;
1346
1347		if (dn->dn_type == DMU_OT_DNODE) {
1348			minlvl = 0;
1349			blkfill = DNODES_PER_BLOCK;
1350		}
1351
1352		for (;;) {
1353			char segsize[6];
1354			error = dnode_next_offset(dn,
1355			    0, &start, minlvl, blkfill, 0);
1356			if (error)
1357				break;
1358			end = start;
1359			error = dnode_next_offset(dn,
1360			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1361			nicenum(end - start, segsize);
1362			(void) printf("\t\tsegment [%016llx, %016llx)"
1363			    " size %5s\n", (u_longlong_t)start,
1364			    (u_longlong_t)end, segsize);
1365			if (error)
1366				break;
1367			start = end;
1368		}
1369	}
1370
1371	if (db != NULL)
1372		dmu_buf_rele(db, FTAG);
1373}
1374
1375static char *objset_types[DMU_OST_NUMTYPES] = {
1376	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1377
1378static void
1379dump_dir(objset_t *os)
1380{
1381	dmu_objset_stats_t dds;
1382	uint64_t object, object_count;
1383	uint64_t refdbytes, usedobjs, scratch;
1384	char numbuf[8];
1385	char blkbuf[BP_SPRINTF_LEN + 20];
1386	char osname[MAXNAMELEN];
1387	char *type = "UNKNOWN";
1388	int verbosity = dump_opt['d'];
1389	int print_header = 1;
1390	int i, error;
1391
1392	dmu_objset_fast_stat(os, &dds);
1393
1394	if (dds.dds_type < DMU_OST_NUMTYPES)
1395		type = objset_types[dds.dds_type];
1396
1397	if (dds.dds_type == DMU_OST_META) {
1398		dds.dds_creation_txg = TXG_INITIAL;
1399		usedobjs = os->os_rootbp->blk_fill;
1400		refdbytes = os->os_spa->spa_dsl_pool->
1401		    dp_mos_dir->dd_phys->dd_used_bytes;
1402	} else {
1403		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1404	}
1405
1406	ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1407
1408	nicenum(refdbytes, numbuf);
1409
1410	if (verbosity >= 4) {
1411		(void) sprintf(blkbuf, ", rootbp ");
1412		(void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1413	} else {
1414		blkbuf[0] = '\0';
1415	}
1416
1417	dmu_objset_name(os, osname);
1418
1419	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1420	    "%s, %llu objects%s\n",
1421	    osname, type, (u_longlong_t)dmu_objset_id(os),
1422	    (u_longlong_t)dds.dds_creation_txg,
1423	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1424
1425	if (zopt_objects != 0) {
1426		for (i = 0; i < zopt_objects; i++)
1427			dump_object(os, zopt_object[i], verbosity,
1428			    &print_header);
1429		(void) printf("\n");
1430		return;
1431	}
1432
1433	if (dump_opt['i'] != 0 || verbosity >= 2)
1434		dump_intent_log(dmu_objset_zil(os));
1435
1436	if (dmu_objset_ds(os) != NULL)
1437		dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1438		    dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1439
1440	if (verbosity < 2)
1441		return;
1442
1443	if (os->os_rootbp->blk_birth == 0)
1444		return;
1445
1446	dump_object(os, 0, verbosity, &print_header);
1447	object_count = 0;
1448	if (os->os_userused_dnode &&
1449	    os->os_userused_dnode->dn_type != 0) {
1450		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1451		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1452	}
1453
1454	object = 0;
1455	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1456		dump_object(os, object, verbosity, &print_header);
1457		object_count++;
1458	}
1459
1460	ASSERT3U(object_count, ==, usedobjs);
1461
1462	(void) printf("\n");
1463
1464	if (error != ESRCH) {
1465		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1466		abort();
1467	}
1468}
1469
1470static void
1471dump_uberblock(uberblock_t *ub)
1472{
1473	time_t timestamp = ub->ub_timestamp;
1474
1475	(void) printf("\nUberblock:\n");
1476	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1477	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1478	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1479	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1480	(void) printf("\ttimestamp = %llu UTC = %s",
1481	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1482	if (dump_opt['u'] >= 3) {
1483		char blkbuf[BP_SPRINTF_LEN];
1484		sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1485		(void) printf("\trootbp = %s\n", blkbuf);
1486	}
1487	(void) printf("\n");
1488}
1489
1490static void
1491dump_config(spa_t *spa)
1492{
1493	dmu_buf_t *db;
1494	size_t nvsize = 0;
1495	int error = 0;
1496
1497
1498	error = dmu_bonus_hold(spa->spa_meta_objset,
1499	    spa->spa_config_object, FTAG, &db);
1500
1501	if (error == 0) {
1502		nvsize = *(uint64_t *)db->db_data;
1503		dmu_buf_rele(db, FTAG);
1504
1505		(void) printf("\nMOS Configuration:\n");
1506		dump_packed_nvlist(spa->spa_meta_objset,
1507		    spa->spa_config_object, (void *)&nvsize, 1);
1508	} else {
1509		(void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1510		    (u_longlong_t)spa->spa_config_object, error);
1511	}
1512}
1513
1514static void
1515dump_cachefile(const char *cachefile)
1516{
1517	int fd;
1518	struct stat64 statbuf;
1519	char *buf;
1520	nvlist_t *config;
1521
1522	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1523		(void) printf("cannot open '%s': %s\n", cachefile,
1524		    strerror(errno));
1525		exit(1);
1526	}
1527
1528	if (fstat64(fd, &statbuf) != 0) {
1529		(void) printf("failed to stat '%s': %s\n", cachefile,
1530		    strerror(errno));
1531		exit(1);
1532	}
1533
1534	if ((buf = malloc(statbuf.st_size)) == NULL) {
1535		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1536		    (u_longlong_t)statbuf.st_size);
1537		exit(1);
1538	}
1539
1540	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1541		(void) fprintf(stderr, "failed to read %llu bytes\n",
1542		    (u_longlong_t)statbuf.st_size);
1543		exit(1);
1544	}
1545
1546	(void) close(fd);
1547
1548	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1549		(void) fprintf(stderr, "failed to unpack nvlist\n");
1550		exit(1);
1551	}
1552
1553	free(buf);
1554
1555	dump_nvlist(config, 0);
1556
1557	nvlist_free(config);
1558}
1559
1560static void
1561dump_label(const char *dev)
1562{
1563	int fd;
1564	vdev_label_t label;
1565	char *buf = label.vl_vdev_phys.vp_nvlist;
1566	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1567	struct stat64 statbuf;
1568	uint64_t psize;
1569	int l;
1570
1571	if ((fd = open64(dev, O_RDONLY)) < 0) {
1572		(void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1573		exit(1);
1574	}
1575
1576	if (fstat64(fd, &statbuf) != 0) {
1577		(void) printf("failed to stat '%s': %s\n", dev,
1578		    strerror(errno));
1579		exit(1);
1580	}
1581
1582	psize = statbuf.st_size;
1583	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1584
1585	for (l = 0; l < VDEV_LABELS; l++) {
1586
1587		nvlist_t *config = NULL;
1588
1589		(void) printf("--------------------------------------------\n");
1590		(void) printf("LABEL %d\n", l);
1591		(void) printf("--------------------------------------------\n");
1592
1593		if (pread64(fd, &label, sizeof (label),
1594		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1595			(void) printf("failed to read label %d\n", l);
1596			continue;
1597		}
1598
1599		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1600			(void) printf("failed to unpack label %d\n", l);
1601			continue;
1602		}
1603		dump_nvlist(config, 4);
1604		nvlist_free(config);
1605	}
1606}
1607
1608/*ARGSUSED*/
1609static int
1610dump_one_dir(char *dsname, void *arg)
1611{
1612	int error;
1613	objset_t *os;
1614
1615	error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1616	if (error) {
1617		(void) printf("Could not open %s, error %d\n", dsname, error);
1618		return (0);
1619	}
1620	dump_dir(os);
1621	dmu_objset_disown(os, FTAG);
1622	fuid_table_destroy();
1623	return (0);
1624}
1625
1626/*
1627 * Block statistics.
1628 */
1629typedef struct zdb_blkstats {
1630	uint64_t	zb_asize;
1631	uint64_t	zb_lsize;
1632	uint64_t	zb_psize;
1633	uint64_t	zb_count;
1634} zdb_blkstats_t;
1635
1636/*
1637 * Extended object types to report deferred frees and dedup auto-ditto blocks.
1638 */
1639#define	ZDB_OT_DEFERRED	(DMU_OT_NUMTYPES + 0)
1640#define	ZDB_OT_DITTO	(DMU_OT_NUMTYPES + 1)
1641#define	ZDB_OT_TOTAL	(DMU_OT_NUMTYPES + 2)
1642
1643static char *zdb_ot_extname[] = {
1644	"deferred free",
1645	"dedup ditto",
1646	"Total",
1647};
1648
1649#define	ZB_TOTAL	DN_MAX_LEVELS
1650
1651typedef struct zdb_cb {
1652	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1653	uint64_t	zcb_dedup_asize;
1654	uint64_t	zcb_dedup_blocks;
1655	uint64_t	zcb_errors[256];
1656	int		zcb_readfails;
1657	int		zcb_haderrors;
1658} zdb_cb_t;
1659
1660static void
1661zdb_count_block(spa_t *spa, zilog_t *zilog, zdb_cb_t *zcb, const blkptr_t *bp,
1662    dmu_object_type_t type)
1663{
1664	uint64_t refcnt = 0;
1665
1666	ASSERT(type < ZDB_OT_TOTAL);
1667
1668	if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1669		return;
1670
1671	for (int i = 0; i < 4; i++) {
1672		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1673		int t = (i & 1) ? type : ZDB_OT_TOTAL;
1674		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1675
1676		zb->zb_asize += BP_GET_ASIZE(bp);
1677		zb->zb_lsize += BP_GET_LSIZE(bp);
1678		zb->zb_psize += BP_GET_PSIZE(bp);
1679		zb->zb_count++;
1680	}
1681
1682	if (dump_opt['L'])
1683		return;
1684
1685	if (BP_GET_DEDUP(bp)) {
1686		ddt_t *ddt;
1687		ddt_entry_t *dde;
1688
1689		ddt = ddt_select(spa, bp);
1690		ddt_enter(ddt);
1691		dde = ddt_lookup(ddt, bp, B_FALSE);
1692
1693		if (dde == NULL) {
1694			refcnt = 0;
1695		} else {
1696			ddt_phys_t *ddp = ddt_phys_select(dde, bp);
1697			ddt_phys_decref(ddp);
1698			refcnt = ddp->ddp_refcnt;
1699			if (ddt_phys_total_refcnt(dde) == 0)
1700				ddt_remove(ddt, dde);
1701		}
1702		ddt_exit(ddt);
1703	}
1704
1705	VERIFY3U(zio_wait(zio_claim(NULL, spa,
1706	    refcnt ? 0 : spa_first_txg(spa),
1707	    bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
1708}
1709
1710static int
1711zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
1712    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
1713{
1714	zdb_cb_t *zcb = arg;
1715	char blkbuf[BP_SPRINTF_LEN];
1716	dmu_object_type_t type;
1717	boolean_t is_metadata;
1718
1719	if (bp == NULL)
1720		return (0);
1721
1722	type = BP_GET_TYPE(bp);
1723
1724	zdb_count_block(spa, zilog, zcb, bp, type);
1725
1726	is_metadata = (BP_GET_LEVEL(bp) != 0 || dmu_ot[type].ot_metadata);
1727
1728	if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
1729		int ioerr;
1730		size_t size = BP_GET_PSIZE(bp);
1731		void *data = malloc(size);
1732		int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
1733
1734		/* If it's an intent log block, failure is expected. */
1735		if (zb->zb_level == ZB_ZIL_LEVEL)
1736			flags |= ZIO_FLAG_SPECULATIVE;
1737
1738		ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1739		    NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb));
1740
1741		free(data);
1742
1743		if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) {
1744			zcb->zcb_haderrors = 1;
1745			zcb->zcb_errors[ioerr]++;
1746
1747			if (dump_opt['b'] >= 2)
1748				sprintf_blkptr(blkbuf, bp);
1749			else
1750				blkbuf[0] = '\0';
1751
1752			(void) printf("zdb_blkptr_cb: "
1753			    "Got error %d reading "
1754			    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
1755			    ioerr,
1756			    (u_longlong_t)zb->zb_objset,
1757			    (u_longlong_t)zb->zb_object,
1758			    (u_longlong_t)zb->zb_level,
1759			    (u_longlong_t)zb->zb_blkid,
1760			    blkbuf);
1761		}
1762	}
1763
1764	zcb->zcb_readfails = 0;
1765
1766	if (dump_opt['b'] >= 4) {
1767		sprintf_blkptr(blkbuf, bp);
1768		(void) printf("objset %llu object %llu "
1769		    "level %lld offset 0x%llx %s\n",
1770		    (u_longlong_t)zb->zb_objset,
1771		    (u_longlong_t)zb->zb_object,
1772		    (longlong_t)zb->zb_level,
1773		    (u_longlong_t)blkid2offset(dnp, bp, zb),
1774		    blkbuf);
1775	}
1776
1777	return (0);
1778}
1779
1780static void
1781zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1782{
1783	vdev_t *vd = sm->sm_ppd;
1784
1785	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1786	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
1787}
1788
1789/* ARGSUSED */
1790static void
1791zdb_space_map_load(space_map_t *sm)
1792{
1793}
1794
1795static void
1796zdb_space_map_unload(space_map_t *sm)
1797{
1798	space_map_vacate(sm, zdb_leak, sm);
1799}
1800
1801/* ARGSUSED */
1802static void
1803zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
1804{
1805}
1806
1807static space_map_ops_t zdb_space_map_ops = {
1808	zdb_space_map_load,
1809	zdb_space_map_unload,
1810	NULL,	/* alloc */
1811	zdb_space_map_claim,
1812	NULL,	/* free */
1813	NULL	/* maxsize */
1814};
1815
1816static void
1817zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
1818{
1819	ddt_bookmark_t ddb = { 0 };
1820	ddt_entry_t dde;
1821	int error;
1822
1823	while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
1824		blkptr_t blk;
1825		ddt_phys_t *ddp = dde.dde_phys;
1826
1827		if (ddb.ddb_class == DDT_CLASS_UNIQUE)
1828			return;
1829
1830		ASSERT(ddt_phys_total_refcnt(&dde) > 1);
1831
1832		for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
1833			if (ddp->ddp_phys_birth == 0)
1834				continue;
1835			ddt_bp_create(ddb.ddb_checksum,
1836			    &dde.dde_key, ddp, &blk);
1837			if (p == DDT_PHYS_DITTO) {
1838				zdb_count_block(spa, NULL, zcb, &blk,
1839				    ZDB_OT_DITTO);
1840			} else {
1841				zcb->zcb_dedup_asize +=
1842				    BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
1843				zcb->zcb_dedup_blocks++;
1844			}
1845		}
1846		if (!dump_opt['L']) {
1847			ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
1848			ddt_enter(ddt);
1849			VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
1850			ddt_exit(ddt);
1851		}
1852	}
1853
1854	ASSERT(error == ENOENT);
1855}
1856
1857static void
1858zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
1859{
1860	if (!dump_opt['L']) {
1861		vdev_t *rvd = spa->spa_root_vdev;
1862		for (int c = 0; c < rvd->vdev_children; c++) {
1863			vdev_t *vd = rvd->vdev_child[c];
1864			for (int m = 0; m < vd->vdev_ms_count; m++) {
1865				metaslab_t *msp = vd->vdev_ms[m];
1866				mutex_enter(&msp->ms_lock);
1867				space_map_unload(&msp->ms_map);
1868				VERIFY(space_map_load(&msp->ms_map,
1869				    &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
1870				    spa->spa_meta_objset) == 0);
1871				msp->ms_map.sm_ppd = vd;
1872				mutex_exit(&msp->ms_lock);
1873			}
1874		}
1875	}
1876
1877	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
1878
1879	zdb_ddt_leak_init(spa, zcb);
1880
1881	spa_config_exit(spa, SCL_CONFIG, FTAG);
1882}
1883
1884static void
1885zdb_leak_fini(spa_t *spa)
1886{
1887	if (!dump_opt['L']) {
1888		vdev_t *rvd = spa->spa_root_vdev;
1889		for (int c = 0; c < rvd->vdev_children; c++) {
1890			vdev_t *vd = rvd->vdev_child[c];
1891			for (int m = 0; m < vd->vdev_ms_count; m++) {
1892				metaslab_t *msp = vd->vdev_ms[m];
1893				mutex_enter(&msp->ms_lock);
1894				space_map_unload(&msp->ms_map);
1895				mutex_exit(&msp->ms_lock);
1896			}
1897		}
1898	}
1899}
1900
1901static int
1902dump_block_stats(spa_t *spa)
1903{
1904	zdb_cb_t zcb = { 0 };
1905	zdb_blkstats_t *zb, *tzb;
1906	uint64_t norm_alloc, norm_space, total_alloc, total_found;
1907	int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA;
1908	int leaks = 0;
1909
1910	(void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
1911	    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
1912	    (dump_opt['c'] == 1) ? "metadata " : "",
1913	    dump_opt['c'] ? "checksums " : "",
1914	    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
1915	    !dump_opt['L'] ? "nothing leaked " : "");
1916
1917	/*
1918	 * Load all space maps as SM_ALLOC maps, then traverse the pool
1919	 * claiming each block we discover.  If the pool is perfectly
1920	 * consistent, the space maps will be empty when we're done.
1921	 * Anything left over is a leak; any block we can't claim (because
1922	 * it's not part of any space map) is a double allocation,
1923	 * reference to a freed block, or an unclaimed log block.
1924	 */
1925	zdb_leak_init(spa, &zcb);
1926
1927	/*
1928	 * If there's a deferred-free bplist, process that first.
1929	 */
1930	if (spa->spa_deferred_bplist_obj != 0) {
1931		bplist_t *bpl = &spa->spa_deferred_bplist;
1932		blkptr_t blk;
1933		uint64_t itor = 0;
1934
1935		VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1936		    spa->spa_deferred_bplist_obj));
1937
1938		while (bplist_iterate(bpl, &itor, &blk) == 0) {
1939			if (dump_opt['b'] >= 4) {
1940				char blkbuf[BP_SPRINTF_LEN];
1941				sprintf_blkptr(blkbuf, &blk);
1942				(void) printf("[%s] %s\n",
1943				    "deferred free", blkbuf);
1944			}
1945			zdb_count_block(spa, NULL, &zcb, &blk, ZDB_OT_DEFERRED);
1946		}
1947
1948		bplist_close(bpl);
1949	}
1950
1951	if (dump_opt['c'] > 1)
1952		flags |= TRAVERSE_PREFETCH_DATA;
1953
1954	zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
1955
1956	if (zcb.zcb_haderrors) {
1957		(void) printf("\nError counts:\n\n");
1958		(void) printf("\t%5s  %s\n", "errno", "count");
1959		for (int e = 0; e < 256; e++) {
1960			if (zcb.zcb_errors[e] != 0) {
1961				(void) printf("\t%5d  %llu\n",
1962				    e, (u_longlong_t)zcb.zcb_errors[e]);
1963			}
1964		}
1965	}
1966
1967	/*
1968	 * Report any leaked segments.
1969	 */
1970	zdb_leak_fini(spa);
1971
1972	tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
1973
1974	norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
1975	norm_space = metaslab_class_get_space(spa_normal_class(spa));
1976
1977	total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
1978	total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
1979
1980	if (total_found == total_alloc) {
1981		if (!dump_opt['L'])
1982			(void) printf("\n\tNo leaks (block sum matches space"
1983			    " maps exactly)\n");
1984	} else {
1985		(void) printf("block traversal size %llu != alloc %llu "
1986		    "(%s %lld)\n",
1987		    (u_longlong_t)total_found,
1988		    (u_longlong_t)total_alloc,
1989		    (dump_opt['L']) ? "unreachable" : "leaked",
1990		    (longlong_t)(total_alloc - total_found));
1991		leaks = 1;
1992	}
1993
1994	if (tzb->zb_count == 0)
1995		return (2);
1996
1997	(void) printf("\n");
1998	(void) printf("\tbp count:      %10llu\n",
1999	    (u_longlong_t)tzb->zb_count);
2000	(void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2001	    (u_longlong_t)tzb->zb_lsize,
2002	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2003	(void) printf("\tbp physical:   %10llu      avg:"
2004	    " %6llu     compression: %6.2f\n",
2005	    (u_longlong_t)tzb->zb_psize,
2006	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2007	    (double)tzb->zb_lsize / tzb->zb_psize);
2008	(void) printf("\tbp allocated:  %10llu      avg:"
2009	    " %6llu     compression: %6.2f\n",
2010	    (u_longlong_t)tzb->zb_asize,
2011	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2012	    (double)tzb->zb_lsize / tzb->zb_asize);
2013	(void) printf("\tbp deduped:    %10llu    ref>1:"
2014	    " %6llu   deduplication: %6.2f\n",
2015	    (u_longlong_t)zcb.zcb_dedup_asize,
2016	    (u_longlong_t)zcb.zcb_dedup_blocks,
2017	    (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2018	(void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2019	    (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2020
2021	if (dump_opt['b'] >= 2) {
2022		int l, t, level;
2023		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2024		    "\t  avg\t comp\t%%Total\tType\n");
2025
2026		for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2027			char csize[6], lsize[6], psize[6], asize[6], avg[6];
2028			char *typename;
2029
2030			if (t < DMU_OT_NUMTYPES)
2031				typename = dmu_ot[t].ot_name;
2032			else
2033				typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2034
2035			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2036				(void) printf("%6s\t%5s\t%5s\t%5s"
2037				    "\t%5s\t%5s\t%6s\t%s\n",
2038				    "-",
2039				    "-",
2040				    "-",
2041				    "-",
2042				    "-",
2043				    "-",
2044				    "-",
2045				    typename);
2046				continue;
2047			}
2048
2049			for (l = ZB_TOTAL - 1; l >= -1; l--) {
2050				level = (l == -1 ? ZB_TOTAL : l);
2051				zb = &zcb.zcb_type[level][t];
2052
2053				if (zb->zb_asize == 0)
2054					continue;
2055
2056				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2057					continue;
2058
2059				if (level == 0 && zb->zb_asize ==
2060				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2061					continue;
2062
2063				nicenum(zb->zb_count, csize);
2064				nicenum(zb->zb_lsize, lsize);
2065				nicenum(zb->zb_psize, psize);
2066				nicenum(zb->zb_asize, asize);
2067				nicenum(zb->zb_asize / zb->zb_count, avg);
2068
2069				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2070				    "\t%5.2f\t%6.2f\t",
2071				    csize, lsize, psize, asize, avg,
2072				    (double)zb->zb_lsize / zb->zb_psize,
2073				    100.0 * zb->zb_asize / tzb->zb_asize);
2074
2075				if (level == ZB_TOTAL)
2076					(void) printf("%s\n", typename);
2077				else
2078					(void) printf("    L%d %s\n",
2079					    level, typename);
2080			}
2081		}
2082	}
2083
2084	(void) printf("\n");
2085
2086	if (leaks)
2087		return (2);
2088
2089	if (zcb.zcb_haderrors)
2090		return (3);
2091
2092	return (0);
2093}
2094
2095typedef struct zdb_ddt_entry {
2096	ddt_key_t	zdde_key;
2097	uint64_t	zdde_ref_blocks;
2098	uint64_t	zdde_ref_lsize;
2099	uint64_t	zdde_ref_psize;
2100	uint64_t	zdde_ref_dsize;
2101	avl_node_t	zdde_node;
2102} zdb_ddt_entry_t;
2103
2104/* ARGSUSED */
2105static int
2106zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2107    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2108{
2109	avl_tree_t *t = arg;
2110	avl_index_t where;
2111	zdb_ddt_entry_t *zdde, zdde_search;
2112
2113	if (bp == NULL)
2114		return (0);
2115
2116	if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2117		(void) printf("traversing objset %llu, %llu objects, "
2118		    "%lu blocks so far\n",
2119		    (u_longlong_t)zb->zb_objset,
2120		    (u_longlong_t)bp->blk_fill,
2121		    avl_numnodes(t));
2122	}
2123
2124	if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2125	    BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata)
2126		return (0);
2127
2128	ddt_key_fill(&zdde_search.zdde_key, bp);
2129
2130	zdde = avl_find(t, &zdde_search, &where);
2131
2132	if (zdde == NULL) {
2133		zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2134		zdde->zdde_key = zdde_search.zdde_key;
2135		avl_insert(t, zdde, where);
2136	}
2137
2138	zdde->zdde_ref_blocks += 1;
2139	zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2140	zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2141	zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2142
2143	return (0);
2144}
2145
2146static void
2147dump_simulated_ddt(spa_t *spa)
2148{
2149	avl_tree_t t;
2150	void *cookie = NULL;
2151	zdb_ddt_entry_t *zdde;
2152	ddt_histogram_t ddh_total = { 0 };
2153	ddt_stat_t dds_total = { 0 };
2154
2155	avl_create(&t, ddt_entry_compare,
2156	    sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2157
2158	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2159
2160	(void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2161	    zdb_ddt_add_cb, &t);
2162
2163	spa_config_exit(spa, SCL_CONFIG, FTAG);
2164
2165	while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2166		ddt_stat_t dds;
2167		uint64_t refcnt = zdde->zdde_ref_blocks;
2168		ASSERT(refcnt != 0);
2169
2170		dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2171		dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2172		dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2173		dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2174
2175		dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2176		dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2177		dds.dds_ref_psize = zdde->zdde_ref_psize;
2178		dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2179
2180		ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2181
2182		umem_free(zdde, sizeof (*zdde));
2183	}
2184
2185	avl_destroy(&t);
2186
2187	ddt_histogram_stat(&dds_total, &ddh_total);
2188
2189	(void) printf("Simulated DDT histogram:\n");
2190
2191	zpool_dump_ddt(&dds_total, &ddh_total);
2192
2193	dump_dedup_ratio(&dds_total);
2194}
2195
2196static void
2197dump_zpool(spa_t *spa)
2198{
2199	dsl_pool_t *dp = spa_get_dsl(spa);
2200	int rc = 0;
2201
2202	if (dump_opt['S']) {
2203		dump_simulated_ddt(spa);
2204		return;
2205	}
2206
2207	if (!dump_opt['e'] && dump_opt['C'] > 1) {
2208		(void) printf("\nCached configuration:\n");
2209		dump_nvlist(spa->spa_config, 8);
2210	}
2211
2212	if (dump_opt['C'])
2213		dump_config(spa);
2214
2215	if (dump_opt['u'])
2216		dump_uberblock(&spa->spa_uberblock);
2217
2218	if (dump_opt['D'])
2219		dump_all_ddts(spa);
2220
2221	if (dump_opt['d'] > 2 || dump_opt['m'])
2222		dump_metaslabs(spa);
2223
2224	if (dump_opt['d'] || dump_opt['i']) {
2225		dump_dir(dp->dp_meta_objset);
2226		if (dump_opt['d'] >= 3) {
2227			dump_bplist(dp->dp_meta_objset,
2228			    spa->spa_deferred_bplist_obj, "Deferred frees");
2229			dump_dtl(spa->spa_root_vdev, 0);
2230		}
2231		(void) dmu_objset_find(spa_name(spa), dump_one_dir,
2232		    NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2233	}
2234	if (dump_opt['b'] || dump_opt['c'])
2235		rc = dump_block_stats(spa);
2236
2237	if (dump_opt['s'])
2238		show_pool_stats(spa);
2239
2240	if (dump_opt['h'])
2241		dump_history(spa);
2242
2243	if (rc != 0)
2244		exit(rc);
2245}
2246
2247#define	ZDB_FLAG_CHECKSUM	0x0001
2248#define	ZDB_FLAG_DECOMPRESS	0x0002
2249#define	ZDB_FLAG_BSWAP		0x0004
2250#define	ZDB_FLAG_GBH		0x0008
2251#define	ZDB_FLAG_INDIRECT	0x0010
2252#define	ZDB_FLAG_PHYS		0x0020
2253#define	ZDB_FLAG_RAW		0x0040
2254#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
2255
2256int flagbits[256];
2257
2258static void
2259zdb_print_blkptr(blkptr_t *bp, int flags)
2260{
2261	char blkbuf[BP_SPRINTF_LEN];
2262
2263	if (flags & ZDB_FLAG_BSWAP)
2264		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2265
2266	sprintf_blkptr(blkbuf, bp);
2267	(void) printf("%s\n", blkbuf);
2268}
2269
2270static void
2271zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2272{
2273	int i;
2274
2275	for (i = 0; i < nbps; i++)
2276		zdb_print_blkptr(&bp[i], flags);
2277}
2278
2279static void
2280zdb_dump_gbh(void *buf, int flags)
2281{
2282	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2283}
2284
2285static void
2286zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2287{
2288	if (flags & ZDB_FLAG_BSWAP)
2289		byteswap_uint64_array(buf, size);
2290	(void) write(1, buf, size);
2291}
2292
2293static void
2294zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2295{
2296	uint64_t *d = (uint64_t *)buf;
2297	int nwords = size / sizeof (uint64_t);
2298	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2299	int i, j;
2300	char *hdr, *c;
2301
2302
2303	if (do_bswap)
2304		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2305	else
2306		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2307
2308	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2309
2310	for (i = 0; i < nwords; i += 2) {
2311		(void) printf("%06llx:  %016llx  %016llx  ",
2312		    (u_longlong_t)(i * sizeof (uint64_t)),
2313		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2314		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2315
2316		c = (char *)&d[i];
2317		for (j = 0; j < 2 * sizeof (uint64_t); j++)
2318			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
2319		(void) printf("\n");
2320	}
2321}
2322
2323/*
2324 * There are two acceptable formats:
2325 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
2326 *	child[.child]*    - For example: 0.1.1
2327 *
2328 * The second form can be used to specify arbitrary vdevs anywhere
2329 * in the heirarchy.  For example, in a pool with a mirror of
2330 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2331 */
2332static vdev_t *
2333zdb_vdev_lookup(vdev_t *vdev, char *path)
2334{
2335	char *s, *p, *q;
2336	int i;
2337
2338	if (vdev == NULL)
2339		return (NULL);
2340
2341	/* First, assume the x.x.x.x format */
2342	i = (int)strtoul(path, &s, 10);
2343	if (s == path || (s && *s != '.' && *s != '\0'))
2344		goto name;
2345	if (i < 0 || i >= vdev->vdev_children)
2346		return (NULL);
2347
2348	vdev = vdev->vdev_child[i];
2349	if (*s == '\0')
2350		return (vdev);
2351	return (zdb_vdev_lookup(vdev, s+1));
2352
2353name:
2354	for (i = 0; i < vdev->vdev_children; i++) {
2355		vdev_t *vc = vdev->vdev_child[i];
2356
2357		if (vc->vdev_path == NULL) {
2358			vc = zdb_vdev_lookup(vc, path);
2359			if (vc == NULL)
2360				continue;
2361			else
2362				return (vc);
2363		}
2364
2365		p = strrchr(vc->vdev_path, '/');
2366		p = p ? p + 1 : vc->vdev_path;
2367		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2368
2369		if (strcmp(vc->vdev_path, path) == 0)
2370			return (vc);
2371		if (strcmp(p, path) == 0)
2372			return (vc);
2373		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2374			return (vc);
2375	}
2376
2377	return (NULL);
2378}
2379
2380/*
2381 * Read a block from a pool and print it out.  The syntax of the
2382 * block descriptor is:
2383 *
2384 *	pool:vdev_specifier:offset:size[:flags]
2385 *
2386 *	pool           - The name of the pool you wish to read from
2387 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2388 *	offset         - offset, in hex, in bytes
2389 *	size           - Amount of data to read, in hex, in bytes
2390 *	flags          - A string of characters specifying options
2391 *		 b: Decode a blkptr at given offset within block
2392 *		*c: Calculate and display checksums
2393 *		 d: Decompress data before dumping
2394 *		 e: Byteswap data before dumping
2395 *		 g: Display data as a gang block header
2396 *		 i: Display as an indirect block
2397 *		 p: Do I/O to physical offset
2398 *		 r: Dump raw data to stdout
2399 *
2400 *              * = not yet implemented
2401 */
2402static void
2403zdb_read_block(char *thing, spa_t *spa)
2404{
2405	blkptr_t blk, *bp = &blk;
2406	dva_t *dva = bp->blk_dva;
2407	int flags = 0;
2408	uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2409	zio_t *zio;
2410	vdev_t *vd;
2411	void *pbuf, *lbuf, *buf;
2412	char *s, *p, *dup, *vdev, *flagstr;
2413	int i, error;
2414
2415	dup = strdup(thing);
2416	s = strtok(dup, ":");
2417	vdev = s ? s : "";
2418	s = strtok(NULL, ":");
2419	offset = strtoull(s ? s : "", NULL, 16);
2420	s = strtok(NULL, ":");
2421	size = strtoull(s ? s : "", NULL, 16);
2422	s = strtok(NULL, ":");
2423	flagstr = s ? s : "";
2424
2425	s = NULL;
2426	if (size == 0)
2427		s = "size must not be zero";
2428	if (!IS_P2ALIGNED(size, DEV_BSIZE))
2429		s = "size must be a multiple of sector size";
2430	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2431		s = "offset must be a multiple of sector size";
2432	if (s) {
2433		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2434		free(dup);
2435		return;
2436	}
2437
2438	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2439		for (i = 0; flagstr[i]; i++) {
2440			int bit = flagbits[(uchar_t)flagstr[i]];
2441
2442			if (bit == 0) {
2443				(void) printf("***Invalid flag: %c\n",
2444				    flagstr[i]);
2445				continue;
2446			}
2447			flags |= bit;
2448
2449			/* If it's not something with an argument, keep going */
2450			if ((bit & (ZDB_FLAG_CHECKSUM |
2451			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
2452				continue;
2453
2454			p = &flagstr[i + 1];
2455			if (bit == ZDB_FLAG_PRINT_BLKPTR)
2456				blkptr_offset = strtoull(p, &p, 16);
2457			if (*p != ':' && *p != '\0') {
2458				(void) printf("***Invalid flag arg: '%s'\n", s);
2459				free(dup);
2460				return;
2461			}
2462		}
2463	}
2464
2465	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2466	if (vd == NULL) {
2467		(void) printf("***Invalid vdev: %s\n", vdev);
2468		free(dup);
2469		return;
2470	} else {
2471		if (vd->vdev_path)
2472			(void) fprintf(stderr, "Found vdev: %s\n",
2473			    vd->vdev_path);
2474		else
2475			(void) fprintf(stderr, "Found vdev type: %s\n",
2476			    vd->vdev_ops->vdev_op_type);
2477	}
2478
2479	psize = size;
2480	lsize = size;
2481
2482	pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2483	lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2484
2485	BP_ZERO(bp);
2486
2487	DVA_SET_VDEV(&dva[0], vd->vdev_id);
2488	DVA_SET_OFFSET(&dva[0], offset);
2489	DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2490	DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2491
2492	BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2493
2494	BP_SET_LSIZE(bp, lsize);
2495	BP_SET_PSIZE(bp, psize);
2496	BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2497	BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2498	BP_SET_TYPE(bp, DMU_OT_NONE);
2499	BP_SET_LEVEL(bp, 0);
2500	BP_SET_DEDUP(bp, 0);
2501	BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2502
2503	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2504	zio = zio_root(spa, NULL, NULL, 0);
2505
2506	if (vd == vd->vdev_top) {
2507		/*
2508		 * Treat this as a normal block read.
2509		 */
2510		zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2511		    ZIO_PRIORITY_SYNC_READ,
2512		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2513	} else {
2514		/*
2515		 * Treat this as a vdev child I/O.
2516		 */
2517		zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2518		    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2519		    ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2520		    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2521		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2522	}
2523
2524	error = zio_wait(zio);
2525	spa_config_exit(spa, SCL_STATE, FTAG);
2526
2527	if (error) {
2528		(void) printf("Read of %s failed, error: %d\n", thing, error);
2529		goto out;
2530	}
2531
2532	if (flags & ZDB_FLAG_DECOMPRESS) {
2533		/*
2534		 * We don't know how the data was compressed, so just try
2535		 * every decompress function at every inflated blocksize.
2536		 */
2537		enum zio_compress c;
2538		void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2539		void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2540
2541		bcopy(pbuf, pbuf2, psize);
2542
2543		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2544		    SPA_MAXBLOCKSIZE - psize) == 0);
2545
2546		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2547		    SPA_MAXBLOCKSIZE - psize) == 0);
2548
2549		for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2550		    lsize -= SPA_MINBLOCKSIZE) {
2551			for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2552				if (zio_decompress_data(c, pbuf, lbuf,
2553				    psize, lsize) == 0 &&
2554				    zio_decompress_data(c, pbuf2, lbuf2,
2555				    psize, lsize) == 0 &&
2556				    bcmp(lbuf, lbuf2, lsize) == 0)
2557					break;
2558			}
2559			if (c != ZIO_COMPRESS_FUNCTIONS)
2560				break;
2561			lsize -= SPA_MINBLOCKSIZE;
2562		}
2563
2564		umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2565		umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2566
2567		if (lsize <= psize) {
2568			(void) printf("Decompress of %s failed\n", thing);
2569			goto out;
2570		}
2571		buf = lbuf;
2572		size = lsize;
2573	} else {
2574		buf = pbuf;
2575		size = psize;
2576	}
2577
2578	if (flags & ZDB_FLAG_PRINT_BLKPTR)
2579		zdb_print_blkptr((blkptr_t *)(void *)
2580		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2581	else if (flags & ZDB_FLAG_RAW)
2582		zdb_dump_block_raw(buf, size, flags);
2583	else if (flags & ZDB_FLAG_INDIRECT)
2584		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2585		    flags);
2586	else if (flags & ZDB_FLAG_GBH)
2587		zdb_dump_gbh(buf, flags);
2588	else
2589		zdb_dump_block(thing, buf, size, flags);
2590
2591out:
2592	umem_free(pbuf, SPA_MAXBLOCKSIZE);
2593	umem_free(lbuf, SPA_MAXBLOCKSIZE);
2594	free(dup);
2595}
2596
2597static boolean_t
2598pool_match(nvlist_t *cfg, char *tgt)
2599{
2600	uint64_t v, guid = strtoull(tgt, NULL, 0);
2601	char *s;
2602
2603	if (guid != 0) {
2604		if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2605			return (v == guid);
2606	} else {
2607		if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2608			return (strcmp(s, tgt) == 0);
2609	}
2610	return (B_FALSE);
2611}
2612
2613static char *
2614find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2615{
2616	nvlist_t *pools;
2617	nvlist_t *match = NULL;
2618	char *name = NULL;
2619	char *sepp = NULL;
2620	char sep;
2621	int count = 0;
2622
2623	if ((sepp = strpbrk(*target, "/@")) != NULL) {
2624		sep = *sepp;
2625		*sepp = '\0';
2626	}
2627
2628	pools = zpool_find_import_activeok(g_zfs, dirc, dirv);
2629
2630	if (pools != NULL) {
2631		nvpair_t *elem = NULL;
2632		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2633			verify(nvpair_value_nvlist(elem, configp) == 0);
2634			if (pool_match(*configp, *target)) {
2635				count++;
2636				if (match != NULL) {
2637					/* print previously found config */
2638					if (name != NULL) {
2639						(void) printf("%s\n", name);
2640						dump_nvlist(match, 8);
2641						name = NULL;
2642					}
2643					(void) printf("%s\n",
2644					    nvpair_name(elem));
2645					dump_nvlist(*configp, 8);
2646				} else {
2647					match = *configp;
2648					name = nvpair_name(elem);
2649				}
2650			}
2651		}
2652	}
2653	if (count > 1)
2654		(void) fatal("\tMatched %d pools - use pool GUID "
2655		    "instead of pool name or \n"
2656		    "\tpool name part of a dataset name to select pool", count);
2657
2658	if (sepp)
2659		*sepp = sep;
2660	/*
2661	 * If pool GUID was specified for pool id, replace it with pool name
2662	 */
2663	if (name && (strstr(*target, name) != *target)) {
2664		int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
2665
2666		*target = umem_alloc(sz, UMEM_NOFAIL);
2667		(void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
2668	}
2669
2670	*configp = name ? match : NULL;
2671
2672	return (name);
2673}
2674
2675int
2676main(int argc, char **argv)
2677{
2678	int i, c;
2679	struct rlimit rl = { 1024, 1024 };
2680	spa_t *spa = NULL;
2681	objset_t *os = NULL;
2682	int dump_all = 1;
2683	int verbose = 0;
2684	int error;
2685	char **searchdirs = NULL;
2686	int nsearch = 0;
2687	char *target;
2688	nvlist_t *policy = NULL;
2689	uint64_t max_txg = UINT64_MAX;
2690
2691	(void) setrlimit(RLIMIT_NOFILE, &rl);
2692	(void) enable_extended_FILE_stdio(-1, -1);
2693
2694	dprintf_setup(&argc, argv);
2695
2696	while ((c = getopt(argc, argv, "bcdhilmsuCDRSLevp:t:U:")) != -1) {
2697		switch (c) {
2698		case 'b':
2699		case 'c':
2700		case 'd':
2701		case 'h':
2702		case 'i':
2703		case 'l':
2704		case 'm':
2705		case 's':
2706		case 'u':
2707		case 'C':
2708		case 'D':
2709		case 'R':
2710		case 'S':
2711			dump_opt[c]++;
2712			dump_all = 0;
2713			break;
2714		case 'L':
2715		case 'e':
2716			dump_opt[c]++;
2717			break;
2718		case 'v':
2719			verbose++;
2720			break;
2721		case 'p':
2722			if (searchdirs == NULL) {
2723				searchdirs = umem_alloc(sizeof (char *),
2724				    UMEM_NOFAIL);
2725			} else {
2726				char **tmp = umem_alloc((nsearch + 1) *
2727				    sizeof (char *), UMEM_NOFAIL);
2728				bcopy(searchdirs, tmp, nsearch *
2729				    sizeof (char *));
2730				umem_free(searchdirs,
2731				    nsearch * sizeof (char *));
2732				searchdirs = tmp;
2733			}
2734			searchdirs[nsearch++] = optarg;
2735			break;
2736		case 't':
2737			max_txg = strtoull(optarg, NULL, 0);
2738			if (max_txg < TXG_INITIAL) {
2739				(void) fprintf(stderr, "incorrect txg "
2740				    "specified: %s\n", optarg);
2741				usage();
2742			}
2743			break;
2744		case 'U':
2745			spa_config_path = optarg;
2746			break;
2747		default:
2748			usage();
2749			break;
2750		}
2751	}
2752
2753	if (!dump_opt['e'] && searchdirs != NULL) {
2754		(void) fprintf(stderr, "-p option requires use of -e\n");
2755		usage();
2756	}
2757
2758	kernel_init(FREAD);
2759	g_zfs = libzfs_init();
2760	ASSERT(g_zfs != NULL);
2761
2762	if (dump_all)
2763		verbose = MAX(verbose, 1);
2764
2765	for (c = 0; c < 256; c++) {
2766		if (dump_all && !strchr("elLRS", c))
2767			dump_opt[c] = 1;
2768		if (dump_opt[c])
2769			dump_opt[c] += verbose;
2770	}
2771
2772	argc -= optind;
2773	argv += optind;
2774
2775	if (argc < 2 && dump_opt['R'])
2776		usage();
2777	if (argc < 1) {
2778		if (!dump_opt['e'] && dump_opt['C']) {
2779			dump_cachefile(spa_config_path);
2780			return (0);
2781		}
2782		usage();
2783	}
2784
2785	if (dump_opt['l']) {
2786		dump_label(argv[0]);
2787		return (0);
2788	}
2789
2790	error = 0;
2791	target = argv[0];
2792
2793	VERIFY(nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) == 0);
2794
2795	if (dump_opt['e']) {
2796		nvlist_t *cfg = NULL;
2797		char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
2798
2799		error = ENOENT;
2800		if (name) {
2801			if (dump_opt['C'] > 1) {
2802				(void) printf("\nConfiguration for import:\n");
2803				dump_nvlist(cfg, 8);
2804			}
2805			if (nvlist_add_uint64(policy,
2806			    ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
2807			    nvlist_add_nvlist(cfg,
2808			    ZPOOL_REWIND_POLICY, policy) != 0) {
2809				fatal("can't open '%s': %s",
2810				    target, strerror(ENOMEM));
2811			}
2812			if ((error = spa_import(name, cfg, NULL)) != 0)
2813				error = spa_import_verbatim(name, cfg, NULL);
2814		}
2815	} else {
2816		VERIFY(nvlist_add_uint64(policy, ZPOOL_REWIND_META_THRESH,
2817		    UINT64_MAX) == 0);
2818	}
2819
2820	if (error == 0) {
2821		if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
2822			error = spa_open_rewind(target, &spa, FTAG, policy,
2823			    NULL);
2824			if (error) {
2825				/*
2826				 * If we're missing the log device then
2827				 * try opening the pool after clearing the
2828				 * log state.
2829				 */
2830				mutex_enter(&spa_namespace_lock);
2831				if ((spa = spa_lookup(target)) != NULL &&
2832				    spa->spa_log_state == SPA_LOG_MISSING) {
2833					spa->spa_log_state = SPA_LOG_CLEAR;
2834					error = 0;
2835				}
2836				mutex_exit(&spa_namespace_lock);
2837
2838				if (!error) {
2839					error = spa_open_rewind(target, &spa,
2840					    FTAG, policy, NULL);
2841				}
2842			}
2843		} else {
2844			error = dmu_objset_own(target, DMU_OST_ANY,
2845			    B_TRUE, FTAG, &os);
2846		}
2847	}
2848	nvlist_free(policy);
2849
2850	if (error)
2851		fatal("can't open '%s': %s", target, strerror(error));
2852
2853	argv++;
2854	argc--;
2855	if (!dump_opt['R']) {
2856		if (argc > 0) {
2857			zopt_objects = argc;
2858			zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2859			for (i = 0; i < zopt_objects; i++) {
2860				errno = 0;
2861				zopt_object[i] = strtoull(argv[i], NULL, 0);
2862				if (zopt_object[i] == 0 && errno != 0)
2863					fatal("bad number %s: %s",
2864					    argv[i], strerror(errno));
2865			}
2866		}
2867		(os != NULL) ? dump_dir(os) : dump_zpool(spa);
2868	} else {
2869		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2870		flagbits['c'] = ZDB_FLAG_CHECKSUM;
2871		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2872		flagbits['e'] = ZDB_FLAG_BSWAP;
2873		flagbits['g'] = ZDB_FLAG_GBH;
2874		flagbits['i'] = ZDB_FLAG_INDIRECT;
2875		flagbits['p'] = ZDB_FLAG_PHYS;
2876		flagbits['r'] = ZDB_FLAG_RAW;
2877
2878		for (i = 0; i < argc; i++)
2879			zdb_read_block(argv[i], spa);
2880	}
2881
2882	(os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
2883
2884	fuid_table_destroy();
2885
2886	libzfs_fini(g_zfs);
2887	kernel_fini();
2888
2889	return (0);
2890}
2891