zdb.c revision bf16b11e8deb633dd6c4296d46e92399d1582df4
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2012, 2014 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, int offset)
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 + offset, (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, 0);
324
325	(void) printf("\t\tBlocks with n*5 entries:\n");
326	dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
327
328	(void) printf("\t\tBlocks n/10 full:\n");
329	dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
330
331	(void) printf("\t\tEntries with n chunks:\n");
332	dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
333
334	(void) printf("\t\tBuckets with n entries:\n");
335	dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
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
524int
525get_dtl_refcount(vdev_t *vd)
526{
527	int refcount = 0;
528
529	if (vd->vdev_ops->vdev_op_leaf) {
530		space_map_t *sm = vd->vdev_dtl_sm;
531
532		if (sm != NULL &&
533		    sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
534			return (1);
535		return (0);
536	}
537
538	for (int c = 0; c < vd->vdev_children; c++)
539		refcount += get_dtl_refcount(vd->vdev_child[c]);
540	return (refcount);
541}
542
543int
544get_metaslab_refcount(vdev_t *vd)
545{
546	int refcount = 0;
547
548	if (vd->vdev_top == vd) {
549		for (int m = 0; m < vd->vdev_ms_count; m++) {
550			space_map_t *sm = vd->vdev_ms[m]->ms_sm;
551
552			if (sm != NULL &&
553			    sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
554				refcount++;
555		}
556	}
557	for (int c = 0; c < vd->vdev_children; c++)
558		refcount += get_metaslab_refcount(vd->vdev_child[c]);
559
560	return (refcount);
561}
562
563static int
564verify_spacemap_refcounts(spa_t *spa)
565{
566	uint64_t expected_refcount = 0;
567	uint64_t actual_refcount;
568
569	(void) feature_get_refcount(spa,
570	    &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
571	    &expected_refcount);
572	actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
573	actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
574
575	if (expected_refcount != actual_refcount) {
576		(void) printf("space map refcount mismatch: expected %lld != "
577		    "actual %lld\n",
578		    (longlong_t)expected_refcount,
579		    (longlong_t)actual_refcount);
580		return (2);
581	}
582	return (0);
583}
584
585static void
586dump_spacemap(objset_t *os, space_map_t *sm)
587{
588	uint64_t alloc, offset, entry;
589	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
590			    "INVALID", "INVALID", "INVALID", "INVALID" };
591
592	if (sm == NULL)
593		return;
594
595	/*
596	 * Print out the freelist entries in both encoded and decoded form.
597	 */
598	alloc = 0;
599	for (offset = 0; offset < space_map_length(sm);
600	    offset += sizeof (entry)) {
601		uint8_t mapshift = sm->sm_shift;
602
603		VERIFY0(dmu_read(os, space_map_object(sm), offset,
604		    sizeof (entry), &entry, DMU_READ_PREFETCH));
605		if (SM_DEBUG_DECODE(entry)) {
606
607			(void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
608			    (u_longlong_t)(offset / sizeof (entry)),
609			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
610			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
611			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
612		} else {
613			(void) printf("\t    [%6llu]    %c  range:"
614			    " %010llx-%010llx  size: %06llx\n",
615			    (u_longlong_t)(offset / sizeof (entry)),
616			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
617			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
618			    mapshift) + sm->sm_start),
619			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
620			    mapshift) + sm->sm_start +
621			    (SM_RUN_DECODE(entry) << mapshift)),
622			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
623			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
624				alloc += SM_RUN_DECODE(entry) << mapshift;
625			else
626				alloc -= SM_RUN_DECODE(entry) << mapshift;
627		}
628	}
629	if (alloc != space_map_allocated(sm)) {
630		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
631		    "with space map summary (%llu)\n",
632		    (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
633	}
634}
635
636static void
637dump_metaslab_stats(metaslab_t *msp)
638{
639	char maxbuf[32];
640	range_tree_t *rt = msp->ms_tree;
641	avl_tree_t *t = &msp->ms_size_tree;
642	int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
643
644	zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
645
646	(void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
647	    "segments", avl_numnodes(t), "maxsize", maxbuf,
648	    "freepct", free_pct);
649	(void) printf("\tIn-memory histogram:\n");
650	dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
651}
652
653static void
654dump_metaslab(metaslab_t *msp)
655{
656	vdev_t *vd = msp->ms_group->mg_vd;
657	spa_t *spa = vd->vdev_spa;
658	space_map_t *sm = msp->ms_sm;
659	char freebuf[32];
660
661	zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
662
663	(void) printf(
664	    "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
665	    (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
666	    (u_longlong_t)space_map_object(sm), freebuf);
667
668	if (dump_opt['m'] > 2 && !dump_opt['L']) {
669		mutex_enter(&msp->ms_lock);
670		metaslab_load_wait(msp);
671		if (!msp->ms_loaded) {
672			VERIFY0(metaslab_load(msp));
673			range_tree_stat_verify(msp->ms_tree);
674		}
675		dump_metaslab_stats(msp);
676		metaslab_unload(msp);
677		mutex_exit(&msp->ms_lock);
678	}
679
680	if (dump_opt['m'] > 1 && sm != NULL &&
681	    spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
682		/*
683		 * The space map histogram represents free space in chunks
684		 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
685		 */
686		(void) printf("\tOn-disk histogram:\n");
687		dump_histogram(sm->sm_phys->smp_histogram,
688		    SPACE_MAP_HISTOGRAM_SIZE(sm), sm->sm_shift);
689	}
690
691	if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
692		ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
693
694		mutex_enter(&msp->ms_lock);
695		dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
696		mutex_exit(&msp->ms_lock);
697	}
698}
699
700static void
701print_vdev_metaslab_header(vdev_t *vd)
702{
703	(void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
704	    (u_longlong_t)vd->vdev_id,
705	    "metaslabs", (u_longlong_t)vd->vdev_ms_count,
706	    "offset", "spacemap", "free");
707	(void) printf("\t%15s   %19s   %15s   %10s\n",
708	    "---------------", "-------------------",
709	    "---------------", "-------------");
710}
711
712static void
713dump_metaslabs(spa_t *spa)
714{
715	vdev_t *vd, *rvd = spa->spa_root_vdev;
716	uint64_t m, c = 0, children = rvd->vdev_children;
717
718	(void) printf("\nMetaslabs:\n");
719
720	if (!dump_opt['d'] && zopt_objects > 0) {
721		c = zopt_object[0];
722
723		if (c >= children)
724			(void) fatal("bad vdev id: %llu", (u_longlong_t)c);
725
726		if (zopt_objects > 1) {
727			vd = rvd->vdev_child[c];
728			print_vdev_metaslab_header(vd);
729
730			for (m = 1; m < zopt_objects; m++) {
731				if (zopt_object[m] < vd->vdev_ms_count)
732					dump_metaslab(
733					    vd->vdev_ms[zopt_object[m]]);
734				else
735					(void) fprintf(stderr, "bad metaslab "
736					    "number %llu\n",
737					    (u_longlong_t)zopt_object[m]);
738			}
739			(void) printf("\n");
740			return;
741		}
742		children = c + 1;
743	}
744	for (; c < children; c++) {
745		vd = rvd->vdev_child[c];
746		print_vdev_metaslab_header(vd);
747
748		for (m = 0; m < vd->vdev_ms_count; m++)
749			dump_metaslab(vd->vdev_ms[m]);
750		(void) printf("\n");
751	}
752}
753
754static void
755dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
756{
757	const ddt_phys_t *ddp = dde->dde_phys;
758	const ddt_key_t *ddk = &dde->dde_key;
759	char *types[4] = { "ditto", "single", "double", "triple" };
760	char blkbuf[BP_SPRINTF_LEN];
761	blkptr_t blk;
762
763	for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
764		if (ddp->ddp_phys_birth == 0)
765			continue;
766		ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
767		snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
768		(void) printf("index %llx refcnt %llu %s %s\n",
769		    (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
770		    types[p], blkbuf);
771	}
772}
773
774static void
775dump_dedup_ratio(const ddt_stat_t *dds)
776{
777	double rL, rP, rD, D, dedup, compress, copies;
778
779	if (dds->dds_blocks == 0)
780		return;
781
782	rL = (double)dds->dds_ref_lsize;
783	rP = (double)dds->dds_ref_psize;
784	rD = (double)dds->dds_ref_dsize;
785	D = (double)dds->dds_dsize;
786
787	dedup = rD / D;
788	compress = rL / rP;
789	copies = rD / rP;
790
791	(void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
792	    "dedup * compress / copies = %.2f\n\n",
793	    dedup, compress, copies, dedup * compress / copies);
794}
795
796static void
797dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
798{
799	char name[DDT_NAMELEN];
800	ddt_entry_t dde;
801	uint64_t walk = 0;
802	dmu_object_info_t doi;
803	uint64_t count, dspace, mspace;
804	int error;
805
806	error = ddt_object_info(ddt, type, class, &doi);
807
808	if (error == ENOENT)
809		return;
810	ASSERT(error == 0);
811
812	if ((count = ddt_object_count(ddt, type, class)) == 0)
813		return;
814
815	dspace = doi.doi_physical_blocks_512 << 9;
816	mspace = doi.doi_fill_count * doi.doi_data_block_size;
817
818	ddt_object_name(ddt, type, class, name);
819
820	(void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
821	    name,
822	    (u_longlong_t)count,
823	    (u_longlong_t)(dspace / count),
824	    (u_longlong_t)(mspace / count));
825
826	if (dump_opt['D'] < 3)
827		return;
828
829	zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
830
831	if (dump_opt['D'] < 4)
832		return;
833
834	if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
835		return;
836
837	(void) printf("%s contents:\n\n", name);
838
839	while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
840		dump_dde(ddt, &dde, walk);
841
842	ASSERT(error == ENOENT);
843
844	(void) printf("\n");
845}
846
847static void
848dump_all_ddts(spa_t *spa)
849{
850	ddt_histogram_t ddh_total = { 0 };
851	ddt_stat_t dds_total = { 0 };
852
853	for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
854		ddt_t *ddt = spa->spa_ddt[c];
855		for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
856			for (enum ddt_class class = 0; class < DDT_CLASSES;
857			    class++) {
858				dump_ddt(ddt, type, class);
859			}
860		}
861	}
862
863	ddt_get_dedup_stats(spa, &dds_total);
864
865	if (dds_total.dds_blocks == 0) {
866		(void) printf("All DDTs are empty\n");
867		return;
868	}
869
870	(void) printf("\n");
871
872	if (dump_opt['D'] > 1) {
873		(void) printf("DDT histogram (aggregated over all DDTs):\n");
874		ddt_get_dedup_histogram(spa, &ddh_total);
875		zpool_dump_ddt(&dds_total, &ddh_total);
876	}
877
878	dump_dedup_ratio(&dds_total);
879}
880
881static void
882dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
883{
884	char *prefix = arg;
885
886	(void) printf("%s [%llu,%llu) length %llu\n",
887	    prefix,
888	    (u_longlong_t)start,
889	    (u_longlong_t)(start + size),
890	    (u_longlong_t)(size));
891}
892
893static void
894dump_dtl(vdev_t *vd, int indent)
895{
896	spa_t *spa = vd->vdev_spa;
897	boolean_t required;
898	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
899	char prefix[256];
900
901	spa_vdev_state_enter(spa, SCL_NONE);
902	required = vdev_dtl_required(vd);
903	(void) spa_vdev_state_exit(spa, NULL, 0);
904
905	if (indent == 0)
906		(void) printf("\nDirty time logs:\n\n");
907
908	(void) printf("\t%*s%s [%s]\n", indent, "",
909	    vd->vdev_path ? vd->vdev_path :
910	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
911	    required ? "DTL-required" : "DTL-expendable");
912
913	for (int t = 0; t < DTL_TYPES; t++) {
914		range_tree_t *rt = vd->vdev_dtl[t];
915		if (range_tree_space(rt) == 0)
916			continue;
917		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
918		    indent + 2, "", name[t]);
919		mutex_enter(rt->rt_lock);
920		range_tree_walk(rt, dump_dtl_seg, prefix);
921		mutex_exit(rt->rt_lock);
922		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
923			dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
924	}
925
926	for (int c = 0; c < vd->vdev_children; c++)
927		dump_dtl(vd->vdev_child[c], indent + 4);
928}
929
930static void
931dump_history(spa_t *spa)
932{
933	nvlist_t **events = NULL;
934	char buf[SPA_MAXBLOCKSIZE];
935	uint64_t resid, len, off = 0;
936	uint_t num = 0;
937	int error;
938	time_t tsec;
939	struct tm t;
940	char tbuf[30];
941	char internalstr[MAXPATHLEN];
942
943	do {
944		len = sizeof (buf);
945
946		if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
947			(void) fprintf(stderr, "Unable to read history: "
948			    "error %d\n", error);
949			return;
950		}
951
952		if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
953			break;
954
955		off -= resid;
956	} while (len != 0);
957
958	(void) printf("\nHistory:\n");
959	for (int i = 0; i < num; i++) {
960		uint64_t time, txg, ievent;
961		char *cmd, *intstr;
962		boolean_t printed = B_FALSE;
963
964		if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
965		    &time) != 0)
966			goto next;
967		if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
968		    &cmd) != 0) {
969			if (nvlist_lookup_uint64(events[i],
970			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
971				goto next;
972			verify(nvlist_lookup_uint64(events[i],
973			    ZPOOL_HIST_TXG, &txg) == 0);
974			verify(nvlist_lookup_string(events[i],
975			    ZPOOL_HIST_INT_STR, &intstr) == 0);
976			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
977				goto next;
978
979			(void) snprintf(internalstr,
980			    sizeof (internalstr),
981			    "[internal %s txg:%lld] %s",
982			    zfs_history_event_names[ievent], txg,
983			    intstr);
984			cmd = internalstr;
985		}
986		tsec = time;
987		(void) localtime_r(&tsec, &t);
988		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
989		(void) printf("%s %s\n", tbuf, cmd);
990		printed = B_TRUE;
991
992next:
993		if (dump_opt['h'] > 1) {
994			if (!printed)
995				(void) printf("unrecognized record:\n");
996			dump_nvlist(events[i], 2);
997		}
998	}
999}
1000
1001/*ARGSUSED*/
1002static void
1003dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1004{
1005}
1006
1007static uint64_t
1008blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
1009{
1010	if (dnp == NULL) {
1011		ASSERT(zb->zb_level < 0);
1012		if (zb->zb_object == 0)
1013			return (zb->zb_blkid);
1014		return (zb->zb_blkid * BP_GET_LSIZE(bp));
1015	}
1016
1017	ASSERT(zb->zb_level >= 0);
1018
1019	return ((zb->zb_blkid <<
1020	    (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1021	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1022}
1023
1024static void
1025snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1026{
1027	const dva_t *dva = bp->blk_dva;
1028	int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1029
1030	if (dump_opt['b'] >= 6) {
1031		snprintf_blkptr(blkbuf, buflen, bp);
1032		return;
1033	}
1034
1035	blkbuf[0] = '\0';
1036
1037	for (int i = 0; i < ndvas; i++)
1038		(void) snprintf(blkbuf + strlen(blkbuf),
1039		    buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1040		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1041		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1042		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1043
1044	if (BP_IS_HOLE(bp)) {
1045		(void) snprintf(blkbuf + strlen(blkbuf),
1046		    buflen - strlen(blkbuf), "B=%llu",
1047		    (u_longlong_t)bp->blk_birth);
1048	} else {
1049		(void) snprintf(blkbuf + strlen(blkbuf),
1050		    buflen - strlen(blkbuf),
1051		    "%llxL/%llxP F=%llu B=%llu/%llu",
1052		    (u_longlong_t)BP_GET_LSIZE(bp),
1053		    (u_longlong_t)BP_GET_PSIZE(bp),
1054		    (u_longlong_t)bp->blk_fill,
1055		    (u_longlong_t)bp->blk_birth,
1056		    (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1057	}
1058}
1059
1060static void
1061print_indirect(blkptr_t *bp, const zbookmark_t *zb,
1062    const dnode_phys_t *dnp)
1063{
1064	char blkbuf[BP_SPRINTF_LEN];
1065	int l;
1066
1067	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1068	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1069
1070	(void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1071
1072	ASSERT(zb->zb_level >= 0);
1073
1074	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1075		if (l == zb->zb_level) {
1076			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
1077		} else {
1078			(void) printf(" ");
1079		}
1080	}
1081
1082	snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1083	(void) printf("%s\n", blkbuf);
1084}
1085
1086static int
1087visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1088    blkptr_t *bp, const zbookmark_t *zb)
1089{
1090	int err = 0;
1091
1092	if (bp->blk_birth == 0)
1093		return (0);
1094
1095	print_indirect(bp, zb, dnp);
1096
1097	if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1098		uint32_t flags = ARC_WAIT;
1099		int i;
1100		blkptr_t *cbp;
1101		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1102		arc_buf_t *buf;
1103		uint64_t fill = 0;
1104
1105		err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1106		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1107		if (err)
1108			return (err);
1109		ASSERT(buf->b_data);
1110
1111		/* recursively visit blocks below this */
1112		cbp = buf->b_data;
1113		for (i = 0; i < epb; i++, cbp++) {
1114			zbookmark_t czb;
1115
1116			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1117			    zb->zb_level - 1,
1118			    zb->zb_blkid * epb + i);
1119			err = visit_indirect(spa, dnp, cbp, &czb);
1120			if (err)
1121				break;
1122			fill += cbp->blk_fill;
1123		}
1124		if (!err)
1125			ASSERT3U(fill, ==, bp->blk_fill);
1126		(void) arc_buf_remove_ref(buf, &buf);
1127	}
1128
1129	return (err);
1130}
1131
1132/*ARGSUSED*/
1133static void
1134dump_indirect(dnode_t *dn)
1135{
1136	dnode_phys_t *dnp = dn->dn_phys;
1137	int j;
1138	zbookmark_t czb;
1139
1140	(void) printf("Indirect blocks:\n");
1141
1142	SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1143	    dn->dn_object, dnp->dn_nlevels - 1, 0);
1144	for (j = 0; j < dnp->dn_nblkptr; j++) {
1145		czb.zb_blkid = j;
1146		(void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1147		    &dnp->dn_blkptr[j], &czb);
1148	}
1149
1150	(void) printf("\n");
1151}
1152
1153/*ARGSUSED*/
1154static void
1155dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1156{
1157	dsl_dir_phys_t *dd = data;
1158	time_t crtime;
1159	char nice[32];
1160
1161	if (dd == NULL)
1162		return;
1163
1164	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1165
1166	crtime = dd->dd_creation_time;
1167	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1168	(void) printf("\t\thead_dataset_obj = %llu\n",
1169	    (u_longlong_t)dd->dd_head_dataset_obj);
1170	(void) printf("\t\tparent_dir_obj = %llu\n",
1171	    (u_longlong_t)dd->dd_parent_obj);
1172	(void) printf("\t\torigin_obj = %llu\n",
1173	    (u_longlong_t)dd->dd_origin_obj);
1174	(void) printf("\t\tchild_dir_zapobj = %llu\n",
1175	    (u_longlong_t)dd->dd_child_dir_zapobj);
1176	zdb_nicenum(dd->dd_used_bytes, nice);
1177	(void) printf("\t\tused_bytes = %s\n", nice);
1178	zdb_nicenum(dd->dd_compressed_bytes, nice);
1179	(void) printf("\t\tcompressed_bytes = %s\n", nice);
1180	zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1181	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
1182	zdb_nicenum(dd->dd_quota, nice);
1183	(void) printf("\t\tquota = %s\n", nice);
1184	zdb_nicenum(dd->dd_reserved, nice);
1185	(void) printf("\t\treserved = %s\n", nice);
1186	(void) printf("\t\tprops_zapobj = %llu\n",
1187	    (u_longlong_t)dd->dd_props_zapobj);
1188	(void) printf("\t\tdeleg_zapobj = %llu\n",
1189	    (u_longlong_t)dd->dd_deleg_zapobj);
1190	(void) printf("\t\tflags = %llx\n",
1191	    (u_longlong_t)dd->dd_flags);
1192
1193#define	DO(which) \
1194	zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1195	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1196	DO(HEAD);
1197	DO(SNAP);
1198	DO(CHILD);
1199	DO(CHILD_RSRV);
1200	DO(REFRSRV);
1201#undef DO
1202}
1203
1204/*ARGSUSED*/
1205static void
1206dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1207{
1208	dsl_dataset_phys_t *ds = data;
1209	time_t crtime;
1210	char used[32], compressed[32], uncompressed[32], unique[32];
1211	char blkbuf[BP_SPRINTF_LEN];
1212
1213	if (ds == NULL)
1214		return;
1215
1216	ASSERT(size == sizeof (*ds));
1217	crtime = ds->ds_creation_time;
1218	zdb_nicenum(ds->ds_referenced_bytes, used);
1219	zdb_nicenum(ds->ds_compressed_bytes, compressed);
1220	zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1221	zdb_nicenum(ds->ds_unique_bytes, unique);
1222	snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1223
1224	(void) printf("\t\tdir_obj = %llu\n",
1225	    (u_longlong_t)ds->ds_dir_obj);
1226	(void) printf("\t\tprev_snap_obj = %llu\n",
1227	    (u_longlong_t)ds->ds_prev_snap_obj);
1228	(void) printf("\t\tprev_snap_txg = %llu\n",
1229	    (u_longlong_t)ds->ds_prev_snap_txg);
1230	(void) printf("\t\tnext_snap_obj = %llu\n",
1231	    (u_longlong_t)ds->ds_next_snap_obj);
1232	(void) printf("\t\tsnapnames_zapobj = %llu\n",
1233	    (u_longlong_t)ds->ds_snapnames_zapobj);
1234	(void) printf("\t\tnum_children = %llu\n",
1235	    (u_longlong_t)ds->ds_num_children);
1236	(void) printf("\t\tuserrefs_obj = %llu\n",
1237	    (u_longlong_t)ds->ds_userrefs_obj);
1238	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1239	(void) printf("\t\tcreation_txg = %llu\n",
1240	    (u_longlong_t)ds->ds_creation_txg);
1241	(void) printf("\t\tdeadlist_obj = %llu\n",
1242	    (u_longlong_t)ds->ds_deadlist_obj);
1243	(void) printf("\t\tused_bytes = %s\n", used);
1244	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
1245	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1246	(void) printf("\t\tunique = %s\n", unique);
1247	(void) printf("\t\tfsid_guid = %llu\n",
1248	    (u_longlong_t)ds->ds_fsid_guid);
1249	(void) printf("\t\tguid = %llu\n",
1250	    (u_longlong_t)ds->ds_guid);
1251	(void) printf("\t\tflags = %llx\n",
1252	    (u_longlong_t)ds->ds_flags);
1253	(void) printf("\t\tnext_clones_obj = %llu\n",
1254	    (u_longlong_t)ds->ds_next_clones_obj);
1255	(void) printf("\t\tprops_obj = %llu\n",
1256	    (u_longlong_t)ds->ds_props_obj);
1257	(void) printf("\t\tbp = %s\n", blkbuf);
1258}
1259
1260/* ARGSUSED */
1261static int
1262dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1263{
1264	char blkbuf[BP_SPRINTF_LEN];
1265
1266	if (bp->blk_birth != 0) {
1267		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1268		(void) printf("\t%s\n", blkbuf);
1269	}
1270	return (0);
1271}
1272
1273static void
1274dump_bptree(objset_t *os, uint64_t obj, char *name)
1275{
1276	char bytes[32];
1277	bptree_phys_t *bt;
1278	dmu_buf_t *db;
1279
1280	if (dump_opt['d'] < 3)
1281		return;
1282
1283	VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1284	bt = db->db_data;
1285	zdb_nicenum(bt->bt_bytes, bytes);
1286	(void) printf("\n    %s: %llu datasets, %s\n",
1287	    name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1288	dmu_buf_rele(db, FTAG);
1289
1290	if (dump_opt['d'] < 5)
1291		return;
1292
1293	(void) printf("\n");
1294
1295	(void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1296}
1297
1298/* ARGSUSED */
1299static int
1300dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1301{
1302	char blkbuf[BP_SPRINTF_LEN];
1303
1304	ASSERT(bp->blk_birth != 0);
1305	snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1306	(void) printf("\t%s\n", blkbuf);
1307	return (0);
1308}
1309
1310static void
1311dump_bpobj(bpobj_t *bpo, char *name, int indent)
1312{
1313	char bytes[32];
1314	char comp[32];
1315	char uncomp[32];
1316
1317	if (dump_opt['d'] < 3)
1318		return;
1319
1320	zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1321	if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1322		zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1323		zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1324		(void) printf("    %*s: object %llu, %llu local blkptrs, "
1325		    "%llu subobjs, %s (%s/%s comp)\n",
1326		    indent * 8, name,
1327		    (u_longlong_t)bpo->bpo_object,
1328		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1329		    (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1330		    bytes, comp, uncomp);
1331
1332		for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1333			uint64_t subobj;
1334			bpobj_t subbpo;
1335			int error;
1336			VERIFY0(dmu_read(bpo->bpo_os,
1337			    bpo->bpo_phys->bpo_subobjs,
1338			    i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1339			error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1340			if (error != 0) {
1341				(void) printf("ERROR %u while trying to open "
1342				    "subobj id %llu\n",
1343				    error, (u_longlong_t)subobj);
1344				continue;
1345			}
1346			dump_bpobj(&subbpo, "subobj", indent + 1);
1347			bpobj_close(&subbpo);
1348		}
1349	} else {
1350		(void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1351		    indent * 8, name,
1352		    (u_longlong_t)bpo->bpo_object,
1353		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1354		    bytes);
1355	}
1356
1357	if (dump_opt['d'] < 5)
1358		return;
1359
1360
1361	if (indent == 0) {
1362		(void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1363		(void) printf("\n");
1364	}
1365}
1366
1367static void
1368dump_deadlist(dsl_deadlist_t *dl)
1369{
1370	dsl_deadlist_entry_t *dle;
1371	uint64_t unused;
1372	char bytes[32];
1373	char comp[32];
1374	char uncomp[32];
1375
1376	if (dump_opt['d'] < 3)
1377		return;
1378
1379	zdb_nicenum(dl->dl_phys->dl_used, bytes);
1380	zdb_nicenum(dl->dl_phys->dl_comp, comp);
1381	zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1382	(void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1383	    bytes, comp, uncomp);
1384
1385	if (dump_opt['d'] < 4)
1386		return;
1387
1388	(void) printf("\n");
1389
1390	/* force the tree to be loaded */
1391	dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1392
1393	for (dle = avl_first(&dl->dl_tree); dle;
1394	    dle = AVL_NEXT(&dl->dl_tree, dle)) {
1395		if (dump_opt['d'] >= 5) {
1396			char buf[128];
1397			(void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1398			    (longlong_t)dle->dle_mintxg,
1399			    (longlong_t)dle->dle_bpobj.bpo_object);
1400
1401			dump_bpobj(&dle->dle_bpobj, buf, 0);
1402		} else {
1403			(void) printf("mintxg %llu -> obj %llu\n",
1404			    (longlong_t)dle->dle_mintxg,
1405			    (longlong_t)dle->dle_bpobj.bpo_object);
1406
1407		}
1408	}
1409}
1410
1411static avl_tree_t idx_tree;
1412static avl_tree_t domain_tree;
1413static boolean_t fuid_table_loaded;
1414static boolean_t sa_loaded;
1415sa_attr_type_t *sa_attr_table;
1416
1417static void
1418fuid_table_destroy()
1419{
1420	if (fuid_table_loaded) {
1421		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1422		fuid_table_loaded = B_FALSE;
1423	}
1424}
1425
1426/*
1427 * print uid or gid information.
1428 * For normal POSIX id just the id is printed in decimal format.
1429 * For CIFS files with FUID the fuid is printed in hex followed by
1430 * the domain-rid string.
1431 */
1432static void
1433print_idstr(uint64_t id, const char *id_type)
1434{
1435	if (FUID_INDEX(id)) {
1436		char *domain;
1437
1438		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1439		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
1440		    (u_longlong_t)id, domain, (int)FUID_RID(id));
1441	} else {
1442		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1443	}
1444
1445}
1446
1447static void
1448dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1449{
1450	uint32_t uid_idx, gid_idx;
1451
1452	uid_idx = FUID_INDEX(uid);
1453	gid_idx = FUID_INDEX(gid);
1454
1455	/* Load domain table, if not already loaded */
1456	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1457		uint64_t fuid_obj;
1458
1459		/* first find the fuid object.  It lives in the master node */
1460		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1461		    8, 1, &fuid_obj) == 0);
1462		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1463		(void) zfs_fuid_table_load(os, fuid_obj,
1464		    &idx_tree, &domain_tree);
1465		fuid_table_loaded = B_TRUE;
1466	}
1467
1468	print_idstr(uid, "uid");
1469	print_idstr(gid, "gid");
1470}
1471
1472/*ARGSUSED*/
1473static void
1474dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1475{
1476	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
1477	sa_handle_t *hdl;
1478	uint64_t xattr, rdev, gen;
1479	uint64_t uid, gid, mode, fsize, parent, links;
1480	uint64_t pflags;
1481	uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1482	time_t z_crtime, z_atime, z_mtime, z_ctime;
1483	sa_bulk_attr_t bulk[12];
1484	int idx = 0;
1485	int error;
1486
1487	if (!sa_loaded) {
1488		uint64_t sa_attrs = 0;
1489		uint64_t version;
1490
1491		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1492		    8, 1, &version) == 0);
1493		if (version >= ZPL_VERSION_SA) {
1494			VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1495			    8, 1, &sa_attrs) == 0);
1496		}
1497		if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1498		    ZPL_END, &sa_attr_table)) != 0) {
1499			(void) printf("sa_setup failed errno %d, can't "
1500			    "display znode contents\n", error);
1501			return;
1502		}
1503		sa_loaded = B_TRUE;
1504	}
1505
1506	if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1507		(void) printf("Failed to get handle for SA znode\n");
1508		return;
1509	}
1510
1511	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1512	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1513	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1514	    &links, 8);
1515	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1516	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1517	    &mode, 8);
1518	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1519	    NULL, &parent, 8);
1520	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1521	    &fsize, 8);
1522	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1523	    acctm, 16);
1524	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1525	    modtm, 16);
1526	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1527	    crtm, 16);
1528	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1529	    chgtm, 16);
1530	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1531	    &pflags, 8);
1532
1533	if (sa_bulk_lookup(hdl, bulk, idx)) {
1534		(void) sa_handle_destroy(hdl);
1535		return;
1536	}
1537
1538	error = zfs_obj_to_path(os, object, path, sizeof (path));
1539	if (error != 0) {
1540		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1541		    (u_longlong_t)object);
1542	}
1543	if (dump_opt['d'] < 3) {
1544		(void) printf("\t%s\n", path);
1545		(void) sa_handle_destroy(hdl);
1546		return;
1547	}
1548
1549	z_crtime = (time_t)crtm[0];
1550	z_atime = (time_t)acctm[0];
1551	z_mtime = (time_t)modtm[0];
1552	z_ctime = (time_t)chgtm[0];
1553
1554	(void) printf("\tpath	%s\n", path);
1555	dump_uidgid(os, uid, gid);
1556	(void) printf("\tatime	%s", ctime(&z_atime));
1557	(void) printf("\tmtime	%s", ctime(&z_mtime));
1558	(void) printf("\tctime	%s", ctime(&z_ctime));
1559	(void) printf("\tcrtime	%s", ctime(&z_crtime));
1560	(void) printf("\tgen	%llu\n", (u_longlong_t)gen);
1561	(void) printf("\tmode	%llo\n", (u_longlong_t)mode);
1562	(void) printf("\tsize	%llu\n", (u_longlong_t)fsize);
1563	(void) printf("\tparent	%llu\n", (u_longlong_t)parent);
1564	(void) printf("\tlinks	%llu\n", (u_longlong_t)links);
1565	(void) printf("\tpflags	%llx\n", (u_longlong_t)pflags);
1566	if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1567	    sizeof (uint64_t)) == 0)
1568		(void) printf("\txattr	%llu\n", (u_longlong_t)xattr);
1569	if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1570	    sizeof (uint64_t)) == 0)
1571		(void) printf("\trdev	0x%016llx\n", (u_longlong_t)rdev);
1572	sa_handle_destroy(hdl);
1573}
1574
1575/*ARGSUSED*/
1576static void
1577dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1578{
1579}
1580
1581/*ARGSUSED*/
1582static void
1583dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1584{
1585}
1586
1587static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1588	dump_none,		/* unallocated			*/
1589	dump_zap,		/* object directory		*/
1590	dump_uint64,		/* object array			*/
1591	dump_none,		/* packed nvlist		*/
1592	dump_packed_nvlist,	/* packed nvlist size		*/
1593	dump_none,		/* bplist			*/
1594	dump_none,		/* bplist header		*/
1595	dump_none,		/* SPA space map header		*/
1596	dump_none,		/* SPA space map		*/
1597	dump_none,		/* ZIL intent log		*/
1598	dump_dnode,		/* DMU dnode			*/
1599	dump_dmu_objset,	/* DMU objset			*/
1600	dump_dsl_dir,		/* DSL directory		*/
1601	dump_zap,		/* DSL directory child map	*/
1602	dump_zap,		/* DSL dataset snap map		*/
1603	dump_zap,		/* DSL props			*/
1604	dump_dsl_dataset,	/* DSL dataset			*/
1605	dump_znode,		/* ZFS znode			*/
1606	dump_acl,		/* ZFS V0 ACL			*/
1607	dump_uint8,		/* ZFS plain file		*/
1608	dump_zpldir,		/* ZFS directory		*/
1609	dump_zap,		/* ZFS master node		*/
1610	dump_zap,		/* ZFS delete queue		*/
1611	dump_uint8,		/* zvol object			*/
1612	dump_zap,		/* zvol prop			*/
1613	dump_uint8,		/* other uint8[]		*/
1614	dump_uint64,		/* other uint64[]		*/
1615	dump_zap,		/* other ZAP			*/
1616	dump_zap,		/* persistent error log		*/
1617	dump_uint8,		/* SPA history			*/
1618	dump_history_offsets,	/* SPA history offsets		*/
1619	dump_zap,		/* Pool properties		*/
1620	dump_zap,		/* DSL permissions		*/
1621	dump_acl,		/* ZFS ACL			*/
1622	dump_uint8,		/* ZFS SYSACL			*/
1623	dump_none,		/* FUID nvlist			*/
1624	dump_packed_nvlist,	/* FUID nvlist size		*/
1625	dump_zap,		/* DSL dataset next clones	*/
1626	dump_zap,		/* DSL scrub queue		*/
1627	dump_zap,		/* ZFS user/group used		*/
1628	dump_zap,		/* ZFS user/group quota		*/
1629	dump_zap,		/* snapshot refcount tags	*/
1630	dump_ddt_zap,		/* DDT ZAP object		*/
1631	dump_zap,		/* DDT statistics		*/
1632	dump_znode,		/* SA object			*/
1633	dump_zap,		/* SA Master Node		*/
1634	dump_sa_attrs,		/* SA attribute registration	*/
1635	dump_sa_layouts,	/* SA attribute layouts		*/
1636	dump_zap,		/* DSL scrub translations	*/
1637	dump_none,		/* fake dedup BP		*/
1638	dump_zap,		/* deadlist			*/
1639	dump_none,		/* deadlist hdr			*/
1640	dump_zap,		/* dsl clones			*/
1641	dump_none,		/* bpobj subobjs		*/
1642	dump_unknown,		/* Unknown type, must be last	*/
1643};
1644
1645static void
1646dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1647{
1648	dmu_buf_t *db = NULL;
1649	dmu_object_info_t doi;
1650	dnode_t *dn;
1651	void *bonus = NULL;
1652	size_t bsize = 0;
1653	char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1654	char bonus_size[32];
1655	char aux[50];
1656	int error;
1657
1658	if (*print_header) {
1659		(void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1660		    "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1661		    "%full", "type");
1662		*print_header = 0;
1663	}
1664
1665	if (object == 0) {
1666		dn = DMU_META_DNODE(os);
1667	} else {
1668		error = dmu_bonus_hold(os, object, FTAG, &db);
1669		if (error)
1670			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1671			    object, error);
1672		bonus = db->db_data;
1673		bsize = db->db_size;
1674		dn = DB_DNODE((dmu_buf_impl_t *)db);
1675	}
1676	dmu_object_info_from_dnode(dn, &doi);
1677
1678	zdb_nicenum(doi.doi_metadata_block_size, iblk);
1679	zdb_nicenum(doi.doi_data_block_size, dblk);
1680	zdb_nicenum(doi.doi_max_offset, lsize);
1681	zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1682	zdb_nicenum(doi.doi_bonus_size, bonus_size);
1683	(void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1684	    doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1685	    doi.doi_max_offset);
1686
1687	aux[0] = '\0';
1688
1689	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1690		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1691		    ZDB_CHECKSUM_NAME(doi.doi_checksum));
1692	}
1693
1694	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1695		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1696		    ZDB_COMPRESS_NAME(doi.doi_compress));
1697	}
1698
1699	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1700	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1701	    asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1702
1703	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1704		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1705		    "", "", "", "", "", bonus_size, "bonus",
1706		    ZDB_OT_NAME(doi.doi_bonus_type));
1707	}
1708
1709	if (verbosity >= 4) {
1710		(void) printf("\tdnode flags: %s%s%s\n",
1711		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1712		    "USED_BYTES " : "",
1713		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1714		    "USERUSED_ACCOUNTED " : "",
1715		    (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1716		    "SPILL_BLKPTR" : "");
1717		(void) printf("\tdnode maxblkid: %llu\n",
1718		    (longlong_t)dn->dn_phys->dn_maxblkid);
1719
1720		object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1721		    bonus, bsize);
1722		object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1723		*print_header = 1;
1724	}
1725
1726	if (verbosity >= 5)
1727		dump_indirect(dn);
1728
1729	if (verbosity >= 5) {
1730		/*
1731		 * Report the list of segments that comprise the object.
1732		 */
1733		uint64_t start = 0;
1734		uint64_t end;
1735		uint64_t blkfill = 1;
1736		int minlvl = 1;
1737
1738		if (dn->dn_type == DMU_OT_DNODE) {
1739			minlvl = 0;
1740			blkfill = DNODES_PER_BLOCK;
1741		}
1742
1743		for (;;) {
1744			char segsize[32];
1745			error = dnode_next_offset(dn,
1746			    0, &start, minlvl, blkfill, 0);
1747			if (error)
1748				break;
1749			end = start;
1750			error = dnode_next_offset(dn,
1751			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1752			zdb_nicenum(end - start, segsize);
1753			(void) printf("\t\tsegment [%016llx, %016llx)"
1754			    " size %5s\n", (u_longlong_t)start,
1755			    (u_longlong_t)end, segsize);
1756			if (error)
1757				break;
1758			start = end;
1759		}
1760	}
1761
1762	if (db != NULL)
1763		dmu_buf_rele(db, FTAG);
1764}
1765
1766static char *objset_types[DMU_OST_NUMTYPES] = {
1767	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1768
1769static void
1770dump_dir(objset_t *os)
1771{
1772	dmu_objset_stats_t dds;
1773	uint64_t object, object_count;
1774	uint64_t refdbytes, usedobjs, scratch;
1775	char numbuf[32];
1776	char blkbuf[BP_SPRINTF_LEN + 20];
1777	char osname[MAXNAMELEN];
1778	char *type = "UNKNOWN";
1779	int verbosity = dump_opt['d'];
1780	int print_header = 1;
1781	int i, error;
1782
1783	dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1784	dmu_objset_fast_stat(os, &dds);
1785	dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1786
1787	if (dds.dds_type < DMU_OST_NUMTYPES)
1788		type = objset_types[dds.dds_type];
1789
1790	if (dds.dds_type == DMU_OST_META) {
1791		dds.dds_creation_txg = TXG_INITIAL;
1792		usedobjs = os->os_rootbp->blk_fill;
1793		refdbytes = os->os_spa->spa_dsl_pool->
1794		    dp_mos_dir->dd_phys->dd_used_bytes;
1795	} else {
1796		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1797	}
1798
1799	ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1800
1801	zdb_nicenum(refdbytes, numbuf);
1802
1803	if (verbosity >= 4) {
1804		(void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1805		(void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1806		    sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1807	} else {
1808		blkbuf[0] = '\0';
1809	}
1810
1811	dmu_objset_name(os, osname);
1812
1813	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1814	    "%s, %llu objects%s\n",
1815	    osname, type, (u_longlong_t)dmu_objset_id(os),
1816	    (u_longlong_t)dds.dds_creation_txg,
1817	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1818
1819	if (zopt_objects != 0) {
1820		for (i = 0; i < zopt_objects; i++)
1821			dump_object(os, zopt_object[i], verbosity,
1822			    &print_header);
1823		(void) printf("\n");
1824		return;
1825	}
1826
1827	if (dump_opt['i'] != 0 || verbosity >= 2)
1828		dump_intent_log(dmu_objset_zil(os));
1829
1830	if (dmu_objset_ds(os) != NULL)
1831		dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1832
1833	if (verbosity < 2)
1834		return;
1835
1836	if (BP_IS_HOLE(os->os_rootbp))
1837		return;
1838
1839	dump_object(os, 0, verbosity, &print_header);
1840	object_count = 0;
1841	if (DMU_USERUSED_DNODE(os) != NULL &&
1842	    DMU_USERUSED_DNODE(os)->dn_type != 0) {
1843		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1844		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1845	}
1846
1847	object = 0;
1848	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1849		dump_object(os, object, verbosity, &print_header);
1850		object_count++;
1851	}
1852
1853	ASSERT3U(object_count, ==, usedobjs);
1854
1855	(void) printf("\n");
1856
1857	if (error != ESRCH) {
1858		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1859		abort();
1860	}
1861}
1862
1863static void
1864dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1865{
1866	time_t timestamp = ub->ub_timestamp;
1867
1868	(void) printf(header ? header : "");
1869	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1870	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1871	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1872	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1873	(void) printf("\ttimestamp = %llu UTC = %s",
1874	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1875	if (dump_opt['u'] >= 3) {
1876		char blkbuf[BP_SPRINTF_LEN];
1877		snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
1878		(void) printf("\trootbp = %s\n", blkbuf);
1879	}
1880	(void) printf(footer ? footer : "");
1881}
1882
1883static void
1884dump_config(spa_t *spa)
1885{
1886	dmu_buf_t *db;
1887	size_t nvsize = 0;
1888	int error = 0;
1889
1890
1891	error = dmu_bonus_hold(spa->spa_meta_objset,
1892	    spa->spa_config_object, FTAG, &db);
1893
1894	if (error == 0) {
1895		nvsize = *(uint64_t *)db->db_data;
1896		dmu_buf_rele(db, FTAG);
1897
1898		(void) printf("\nMOS Configuration:\n");
1899		dump_packed_nvlist(spa->spa_meta_objset,
1900		    spa->spa_config_object, (void *)&nvsize, 1);
1901	} else {
1902		(void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1903		    (u_longlong_t)spa->spa_config_object, error);
1904	}
1905}
1906
1907static void
1908dump_cachefile(const char *cachefile)
1909{
1910	int fd;
1911	struct stat64 statbuf;
1912	char *buf;
1913	nvlist_t *config;
1914
1915	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1916		(void) printf("cannot open '%s': %s\n", cachefile,
1917		    strerror(errno));
1918		exit(1);
1919	}
1920
1921	if (fstat64(fd, &statbuf) != 0) {
1922		(void) printf("failed to stat '%s': %s\n", cachefile,
1923		    strerror(errno));
1924		exit(1);
1925	}
1926
1927	if ((buf = malloc(statbuf.st_size)) == NULL) {
1928		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1929		    (u_longlong_t)statbuf.st_size);
1930		exit(1);
1931	}
1932
1933	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1934		(void) fprintf(stderr, "failed to read %llu bytes\n",
1935		    (u_longlong_t)statbuf.st_size);
1936		exit(1);
1937	}
1938
1939	(void) close(fd);
1940
1941	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1942		(void) fprintf(stderr, "failed to unpack nvlist\n");
1943		exit(1);
1944	}
1945
1946	free(buf);
1947
1948	dump_nvlist(config, 0);
1949
1950	nvlist_free(config);
1951}
1952
1953#define	ZDB_MAX_UB_HEADER_SIZE 32
1954
1955static void
1956dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1957{
1958	vdev_t vd;
1959	vdev_t *vdp = &vd;
1960	char header[ZDB_MAX_UB_HEADER_SIZE];
1961
1962	vd.vdev_ashift = ashift;
1963	vdp->vdev_top = vdp;
1964
1965	for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1966		uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1967		uberblock_t *ub = (void *)((char *)lbl + uoff);
1968
1969		if (uberblock_verify(ub))
1970			continue;
1971		(void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1972		    "Uberblock[%d]\n", i);
1973		dump_uberblock(ub, header, "");
1974	}
1975}
1976
1977static void
1978dump_label(const char *dev)
1979{
1980	int fd;
1981	vdev_label_t label;
1982	char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1983	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1984	struct stat64 statbuf;
1985	uint64_t psize, ashift;
1986	int len = strlen(dev) + 1;
1987
1988	if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1989		len++;
1990		path = malloc(len);
1991		(void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1992	} else {
1993		path = strdup(dev);
1994	}
1995
1996	if ((fd = open64(path, O_RDONLY)) < 0) {
1997		(void) printf("cannot open '%s': %s\n", path, strerror(errno));
1998		free(path);
1999		exit(1);
2000	}
2001
2002	if (fstat64(fd, &statbuf) != 0) {
2003		(void) printf("failed to stat '%s': %s\n", path,
2004		    strerror(errno));
2005		free(path);
2006		(void) close(fd);
2007		exit(1);
2008	}
2009
2010	if (S_ISBLK(statbuf.st_mode)) {
2011		(void) printf("cannot use '%s': character device required\n",
2012		    path);
2013		free(path);
2014		(void) close(fd);
2015		exit(1);
2016	}
2017
2018	psize = statbuf.st_size;
2019	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2020
2021	for (int l = 0; l < VDEV_LABELS; l++) {
2022		nvlist_t *config = NULL;
2023
2024		(void) printf("--------------------------------------------\n");
2025		(void) printf("LABEL %d\n", l);
2026		(void) printf("--------------------------------------------\n");
2027
2028		if (pread64(fd, &label, sizeof (label),
2029		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2030			(void) printf("failed to read label %d\n", l);
2031			continue;
2032		}
2033
2034		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2035			(void) printf("failed to unpack label %d\n", l);
2036			ashift = SPA_MINBLOCKSHIFT;
2037		} else {
2038			nvlist_t *vdev_tree = NULL;
2039
2040			dump_nvlist(config, 4);
2041			if ((nvlist_lookup_nvlist(config,
2042			    ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2043			    (nvlist_lookup_uint64(vdev_tree,
2044			    ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2045				ashift = SPA_MINBLOCKSHIFT;
2046			nvlist_free(config);
2047		}
2048		if (dump_opt['u'])
2049			dump_label_uberblocks(&label, ashift);
2050	}
2051
2052	free(path);
2053	(void) close(fd);
2054}
2055
2056/*ARGSUSED*/
2057static int
2058dump_one_dir(const char *dsname, void *arg)
2059{
2060	int error;
2061	objset_t *os;
2062
2063	error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2064	if (error) {
2065		(void) printf("Could not open %s, error %d\n", dsname, error);
2066		return (0);
2067	}
2068	dump_dir(os);
2069	dmu_objset_disown(os, FTAG);
2070	fuid_table_destroy();
2071	sa_loaded = B_FALSE;
2072	return (0);
2073}
2074
2075/*
2076 * Block statistics.
2077 */
2078#define	PSIZE_HISTO_SIZE (SPA_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1)
2079typedef struct zdb_blkstats {
2080	uint64_t zb_asize;
2081	uint64_t zb_lsize;
2082	uint64_t zb_psize;
2083	uint64_t zb_count;
2084	uint64_t zb_gangs;
2085	uint64_t zb_ditto_samevdev;
2086	uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2087} zdb_blkstats_t;
2088
2089/*
2090 * Extended object types to report deferred frees and dedup auto-ditto blocks.
2091 */
2092#define	ZDB_OT_DEFERRED	(DMU_OT_NUMTYPES + 0)
2093#define	ZDB_OT_DITTO	(DMU_OT_NUMTYPES + 1)
2094#define	ZDB_OT_OTHER	(DMU_OT_NUMTYPES + 2)
2095#define	ZDB_OT_TOTAL	(DMU_OT_NUMTYPES + 3)
2096
2097static char *zdb_ot_extname[] = {
2098	"deferred free",
2099	"dedup ditto",
2100	"other",
2101	"Total",
2102};
2103
2104#define	ZB_TOTAL	DN_MAX_LEVELS
2105
2106typedef struct zdb_cb {
2107	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2108	uint64_t	zcb_dedup_asize;
2109	uint64_t	zcb_dedup_blocks;
2110	uint64_t	zcb_start;
2111	uint64_t	zcb_lastprint;
2112	uint64_t	zcb_totalasize;
2113	uint64_t	zcb_errors[256];
2114	int		zcb_readfails;
2115	int		zcb_haderrors;
2116	spa_t		*zcb_spa;
2117} zdb_cb_t;
2118
2119static void
2120zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2121    dmu_object_type_t type)
2122{
2123	uint64_t refcnt = 0;
2124
2125	ASSERT(type < ZDB_OT_TOTAL);
2126
2127	if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2128		return;
2129
2130	for (int i = 0; i < 4; i++) {
2131		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2132		int t = (i & 1) ? type : ZDB_OT_TOTAL;
2133		int equal;
2134		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2135
2136		zb->zb_asize += BP_GET_ASIZE(bp);
2137		zb->zb_lsize += BP_GET_LSIZE(bp);
2138		zb->zb_psize += BP_GET_PSIZE(bp);
2139		zb->zb_count++;
2140		zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++;
2141
2142		zb->zb_gangs += BP_COUNT_GANG(bp);
2143
2144		switch (BP_GET_NDVAS(bp)) {
2145		case 2:
2146			if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2147			    DVA_GET_VDEV(&bp->blk_dva[1]))
2148				zb->zb_ditto_samevdev++;
2149			break;
2150		case 3:
2151			equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2152			    DVA_GET_VDEV(&bp->blk_dva[1])) +
2153			    (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2154			    DVA_GET_VDEV(&bp->blk_dva[2])) +
2155			    (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2156			    DVA_GET_VDEV(&bp->blk_dva[2]));
2157			if (equal != 0)
2158				zb->zb_ditto_samevdev++;
2159			break;
2160		}
2161
2162	}
2163
2164	if (dump_opt['L'])
2165		return;
2166
2167	if (BP_GET_DEDUP(bp)) {
2168		ddt_t *ddt;
2169		ddt_entry_t *dde;
2170
2171		ddt = ddt_select(zcb->zcb_spa, bp);
2172		ddt_enter(ddt);
2173		dde = ddt_lookup(ddt, bp, B_FALSE);
2174
2175		if (dde == NULL) {
2176			refcnt = 0;
2177		} else {
2178			ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2179			ddt_phys_decref(ddp);
2180			refcnt = ddp->ddp_refcnt;
2181			if (ddt_phys_total_refcnt(dde) == 0)
2182				ddt_remove(ddt, dde);
2183		}
2184		ddt_exit(ddt);
2185	}
2186
2187	VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2188	    refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2189	    bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2190}
2191
2192static void
2193zdb_blkptr_done(zio_t *zio)
2194{
2195	spa_t *spa = zio->io_spa;
2196	blkptr_t *bp = zio->io_bp;
2197	int ioerr = zio->io_error;
2198	zdb_cb_t *zcb = zio->io_private;
2199	zbookmark_t *zb = &zio->io_bookmark;
2200
2201	zio_data_buf_free(zio->io_data, zio->io_size);
2202
2203	mutex_enter(&spa->spa_scrub_lock);
2204	spa->spa_scrub_inflight--;
2205	cv_broadcast(&spa->spa_scrub_io_cv);
2206
2207	if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2208		char blkbuf[BP_SPRINTF_LEN];
2209
2210		zcb->zcb_haderrors = 1;
2211		zcb->zcb_errors[ioerr]++;
2212
2213		if (dump_opt['b'] >= 2)
2214			snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2215		else
2216			blkbuf[0] = '\0';
2217
2218		(void) printf("zdb_blkptr_cb: "
2219		    "Got error %d reading "
2220		    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2221		    ioerr,
2222		    (u_longlong_t)zb->zb_objset,
2223		    (u_longlong_t)zb->zb_object,
2224		    (u_longlong_t)zb->zb_level,
2225		    (u_longlong_t)zb->zb_blkid,
2226		    blkbuf);
2227	}
2228	mutex_exit(&spa->spa_scrub_lock);
2229}
2230
2231static int
2232zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2233    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2234{
2235	zdb_cb_t *zcb = arg;
2236	dmu_object_type_t type;
2237	boolean_t is_metadata;
2238
2239	if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2240		char blkbuf[BP_SPRINTF_LEN];
2241		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2242		(void) printf("objset %llu object %llu "
2243		    "level %lld offset 0x%llx %s\n",
2244		    (u_longlong_t)zb->zb_objset,
2245		    (u_longlong_t)zb->zb_object,
2246		    (longlong_t)zb->zb_level,
2247		    (u_longlong_t)blkid2offset(dnp, bp, zb),
2248		    blkbuf);
2249	}
2250
2251	if (BP_IS_HOLE(bp))
2252		return (0);
2253
2254	type = BP_GET_TYPE(bp);
2255
2256	zdb_count_block(zcb, zilog, bp,
2257	    (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2258
2259	is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2260
2261	if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2262		size_t size = BP_GET_PSIZE(bp);
2263		void *data = zio_data_buf_alloc(size);
2264		int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2265
2266		/* If it's an intent log block, failure is expected. */
2267		if (zb->zb_level == ZB_ZIL_LEVEL)
2268			flags |= ZIO_FLAG_SPECULATIVE;
2269
2270		mutex_enter(&spa->spa_scrub_lock);
2271		while (spa->spa_scrub_inflight > max_inflight)
2272			cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2273		spa->spa_scrub_inflight++;
2274		mutex_exit(&spa->spa_scrub_lock);
2275
2276		zio_nowait(zio_read(NULL, spa, bp, data, size,
2277		    zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2278	}
2279
2280	zcb->zcb_readfails = 0;
2281
2282	if (dump_opt['b'] < 5 && isatty(STDERR_FILENO) &&
2283	    gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2284		uint64_t now = gethrtime();
2285		char buf[10];
2286		uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2287		int kb_per_sec =
2288		    1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2289		int sec_remaining =
2290		    (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2291
2292		zfs_nicenum(bytes, buf, sizeof (buf));
2293		(void) fprintf(stderr,
2294		    "\r%5s completed (%4dMB/s) "
2295		    "estimated time remaining: %uhr %02umin %02usec        ",
2296		    buf, kb_per_sec / 1024,
2297		    sec_remaining / 60 / 60,
2298		    sec_remaining / 60 % 60,
2299		    sec_remaining % 60);
2300
2301		zcb->zcb_lastprint = now;
2302	}
2303
2304	return (0);
2305}
2306
2307static void
2308zdb_leak(void *arg, uint64_t start, uint64_t size)
2309{
2310	vdev_t *vd = arg;
2311
2312	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2313	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2314}
2315
2316static metaslab_ops_t zdb_metaslab_ops = {
2317	NULL,	/* alloc */
2318	NULL	/* fragmented */
2319};
2320
2321static void
2322zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2323{
2324	ddt_bookmark_t ddb = { 0 };
2325	ddt_entry_t dde;
2326	int error;
2327
2328	while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2329		blkptr_t blk;
2330		ddt_phys_t *ddp = dde.dde_phys;
2331
2332		if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2333			return;
2334
2335		ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2336
2337		for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2338			if (ddp->ddp_phys_birth == 0)
2339				continue;
2340			ddt_bp_create(ddb.ddb_checksum,
2341			    &dde.dde_key, ddp, &blk);
2342			if (p == DDT_PHYS_DITTO) {
2343				zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2344			} else {
2345				zcb->zcb_dedup_asize +=
2346				    BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2347				zcb->zcb_dedup_blocks++;
2348			}
2349		}
2350		if (!dump_opt['L']) {
2351			ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2352			ddt_enter(ddt);
2353			VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2354			ddt_exit(ddt);
2355		}
2356	}
2357
2358	ASSERT(error == ENOENT);
2359}
2360
2361static void
2362zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2363{
2364	zcb->zcb_spa = spa;
2365
2366	if (!dump_opt['L']) {
2367		vdev_t *rvd = spa->spa_root_vdev;
2368		for (int c = 0; c < rvd->vdev_children; c++) {
2369			vdev_t *vd = rvd->vdev_child[c];
2370			for (int m = 0; m < vd->vdev_ms_count; m++) {
2371				metaslab_t *msp = vd->vdev_ms[m];
2372				mutex_enter(&msp->ms_lock);
2373				metaslab_unload(msp);
2374
2375				/*
2376				 * For leak detection, we overload the metaslab
2377				 * ms_tree to contain allocated segments
2378				 * instead of free segments. As a result,
2379				 * we can't use the normal metaslab_load/unload
2380				 * interfaces.
2381				 */
2382				if (msp->ms_sm != NULL) {
2383					msp->ms_ops = &zdb_metaslab_ops;
2384					VERIFY0(space_map_load(msp->ms_sm,
2385					    msp->ms_tree, SM_ALLOC));
2386					msp->ms_loaded = B_TRUE;
2387				}
2388				mutex_exit(&msp->ms_lock);
2389			}
2390		}
2391	}
2392
2393	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2394
2395	zdb_ddt_leak_init(spa, zcb);
2396
2397	spa_config_exit(spa, SCL_CONFIG, FTAG);
2398}
2399
2400static void
2401zdb_leak_fini(spa_t *spa)
2402{
2403	if (!dump_opt['L']) {
2404		vdev_t *rvd = spa->spa_root_vdev;
2405		for (int c = 0; c < rvd->vdev_children; c++) {
2406			vdev_t *vd = rvd->vdev_child[c];
2407			for (int m = 0; m < vd->vdev_ms_count; m++) {
2408				metaslab_t *msp = vd->vdev_ms[m];
2409				mutex_enter(&msp->ms_lock);
2410
2411				/*
2412				 * The ms_tree has been overloaded to
2413				 * contain allocated segments. Now that we
2414				 * finished traversing all blocks, any
2415				 * block that remains in the ms_tree
2416				 * represents an allocated block that we
2417				 * did not claim during the traversal.
2418				 * Claimed blocks would have been removed
2419				 * from the ms_tree.
2420				 */
2421				range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2422				msp->ms_loaded = B_FALSE;
2423
2424				mutex_exit(&msp->ms_lock);
2425			}
2426		}
2427	}
2428}
2429
2430/* ARGSUSED */
2431static int
2432count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2433{
2434	zdb_cb_t *zcb = arg;
2435
2436	if (dump_opt['b'] >= 5) {
2437		char blkbuf[BP_SPRINTF_LEN];
2438		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2439		(void) printf("[%s] %s\n",
2440		    "deferred free", blkbuf);
2441	}
2442	zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2443	return (0);
2444}
2445
2446static int
2447dump_block_stats(spa_t *spa)
2448{
2449	zdb_cb_t zcb = { 0 };
2450	zdb_blkstats_t *zb, *tzb;
2451	uint64_t norm_alloc, norm_space, total_alloc, total_found;
2452	int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2453	int leaks = 0;
2454
2455	(void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2456	    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2457	    (dump_opt['c'] == 1) ? "metadata " : "",
2458	    dump_opt['c'] ? "checksums " : "",
2459	    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2460	    !dump_opt['L'] ? "nothing leaked " : "");
2461
2462	/*
2463	 * Load all space maps as SM_ALLOC maps, then traverse the pool
2464	 * claiming each block we discover.  If the pool is perfectly
2465	 * consistent, the space maps will be empty when we're done.
2466	 * Anything left over is a leak; any block we can't claim (because
2467	 * it's not part of any space map) is a double allocation,
2468	 * reference to a freed block, or an unclaimed log block.
2469	 */
2470	zdb_leak_init(spa, &zcb);
2471
2472	/*
2473	 * If there's a deferred-free bplist, process that first.
2474	 */
2475	(void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2476	    count_block_cb, &zcb, NULL);
2477	if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2478		(void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2479		    count_block_cb, &zcb, NULL);
2480	}
2481	if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2482		VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2483		    spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2484		    &zcb, NULL));
2485	}
2486
2487	if (dump_opt['c'] > 1)
2488		flags |= TRAVERSE_PREFETCH_DATA;
2489
2490	zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2491	zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2492	zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2493
2494	/*
2495	 * If we've traversed the data blocks then we need to wait for those
2496	 * I/Os to complete. We leverage "The Godfather" zio to wait on
2497	 * all async I/Os to complete.
2498	 */
2499	if (dump_opt['c']) {
2500		(void) zio_wait(spa->spa_async_zio_root);
2501		spa->spa_async_zio_root = zio_root(spa, NULL, NULL,
2502		    ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2503		    ZIO_FLAG_GODFATHER);
2504	}
2505
2506	if (zcb.zcb_haderrors) {
2507		(void) printf("\nError counts:\n\n");
2508		(void) printf("\t%5s  %s\n", "errno", "count");
2509		for (int e = 0; e < 256; e++) {
2510			if (zcb.zcb_errors[e] != 0) {
2511				(void) printf("\t%5d  %llu\n",
2512				    e, (u_longlong_t)zcb.zcb_errors[e]);
2513			}
2514		}
2515	}
2516
2517	/*
2518	 * Report any leaked segments.
2519	 */
2520	zdb_leak_fini(spa);
2521
2522	tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2523
2524	norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2525	norm_space = metaslab_class_get_space(spa_normal_class(spa));
2526
2527	total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2528	total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2529
2530	if (total_found == total_alloc) {
2531		if (!dump_opt['L'])
2532			(void) printf("\n\tNo leaks (block sum matches space"
2533			    " maps exactly)\n");
2534	} else {
2535		(void) printf("block traversal size %llu != alloc %llu "
2536		    "(%s %lld)\n",
2537		    (u_longlong_t)total_found,
2538		    (u_longlong_t)total_alloc,
2539		    (dump_opt['L']) ? "unreachable" : "leaked",
2540		    (longlong_t)(total_alloc - total_found));
2541		leaks = 1;
2542	}
2543
2544	if (tzb->zb_count == 0)
2545		return (2);
2546
2547	(void) printf("\n");
2548	(void) printf("\tbp count:      %10llu\n",
2549	    (u_longlong_t)tzb->zb_count);
2550	(void) printf("\tganged count:  %10llu\n",
2551	    (longlong_t)tzb->zb_gangs);
2552	(void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2553	    (u_longlong_t)tzb->zb_lsize,
2554	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2555	(void) printf("\tbp physical:   %10llu      avg:"
2556	    " %6llu     compression: %6.2f\n",
2557	    (u_longlong_t)tzb->zb_psize,
2558	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2559	    (double)tzb->zb_lsize / tzb->zb_psize);
2560	(void) printf("\tbp allocated:  %10llu      avg:"
2561	    " %6llu     compression: %6.2f\n",
2562	    (u_longlong_t)tzb->zb_asize,
2563	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2564	    (double)tzb->zb_lsize / tzb->zb_asize);
2565	(void) printf("\tbp deduped:    %10llu    ref>1:"
2566	    " %6llu   deduplication: %6.2f\n",
2567	    (u_longlong_t)zcb.zcb_dedup_asize,
2568	    (u_longlong_t)zcb.zcb_dedup_blocks,
2569	    (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2570	(void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2571	    (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2572
2573	if (tzb->zb_ditto_samevdev != 0) {
2574		(void) printf("\tDittoed blocks on same vdev: %llu\n",
2575		    (longlong_t)tzb->zb_ditto_samevdev);
2576	}
2577
2578	if (dump_opt['b'] >= 2) {
2579		int l, t, level;
2580		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2581		    "\t  avg\t comp\t%%Total\tType\n");
2582
2583		for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2584			char csize[32], lsize[32], psize[32], asize[32];
2585			char avg[32], gang[32];
2586			char *typename;
2587
2588			if (t < DMU_OT_NUMTYPES)
2589				typename = dmu_ot[t].ot_name;
2590			else
2591				typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2592
2593			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2594				(void) printf("%6s\t%5s\t%5s\t%5s"
2595				    "\t%5s\t%5s\t%6s\t%s\n",
2596				    "-",
2597				    "-",
2598				    "-",
2599				    "-",
2600				    "-",
2601				    "-",
2602				    "-",
2603				    typename);
2604				continue;
2605			}
2606
2607			for (l = ZB_TOTAL - 1; l >= -1; l--) {
2608				level = (l == -1 ? ZB_TOTAL : l);
2609				zb = &zcb.zcb_type[level][t];
2610
2611				if (zb->zb_asize == 0)
2612					continue;
2613
2614				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2615					continue;
2616
2617				if (level == 0 && zb->zb_asize ==
2618				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2619					continue;
2620
2621				zdb_nicenum(zb->zb_count, csize);
2622				zdb_nicenum(zb->zb_lsize, lsize);
2623				zdb_nicenum(zb->zb_psize, psize);
2624				zdb_nicenum(zb->zb_asize, asize);
2625				zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2626				zdb_nicenum(zb->zb_gangs, gang);
2627
2628				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2629				    "\t%5.2f\t%6.2f\t",
2630				    csize, lsize, psize, asize, avg,
2631				    (double)zb->zb_lsize / zb->zb_psize,
2632				    100.0 * zb->zb_asize / tzb->zb_asize);
2633
2634				if (level == ZB_TOTAL)
2635					(void) printf("%s\n", typename);
2636				else
2637					(void) printf("    L%d %s\n",
2638					    level, typename);
2639
2640				if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2641					(void) printf("\t number of ganged "
2642					    "blocks: %s\n", gang);
2643				}
2644
2645				if (dump_opt['b'] >= 4) {
2646					(void) printf("psize "
2647					    "(in 512-byte sectors): "
2648					    "number of blocks\n");
2649					dump_histogram(zb->zb_psize_histogram,
2650					    PSIZE_HISTO_SIZE, 0);
2651				}
2652			}
2653		}
2654	}
2655
2656	(void) printf("\n");
2657
2658	if (leaks)
2659		return (2);
2660
2661	if (zcb.zcb_haderrors)
2662		return (3);
2663
2664	return (0);
2665}
2666
2667typedef struct zdb_ddt_entry {
2668	ddt_key_t	zdde_key;
2669	uint64_t	zdde_ref_blocks;
2670	uint64_t	zdde_ref_lsize;
2671	uint64_t	zdde_ref_psize;
2672	uint64_t	zdde_ref_dsize;
2673	avl_node_t	zdde_node;
2674} zdb_ddt_entry_t;
2675
2676/* ARGSUSED */
2677static int
2678zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2679    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2680{
2681	avl_tree_t *t = arg;
2682	avl_index_t where;
2683	zdb_ddt_entry_t *zdde, zdde_search;
2684
2685	if (BP_IS_HOLE(bp))
2686		return (0);
2687
2688	if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2689		(void) printf("traversing objset %llu, %llu objects, "
2690		    "%lu blocks so far\n",
2691		    (u_longlong_t)zb->zb_objset,
2692		    (u_longlong_t)bp->blk_fill,
2693		    avl_numnodes(t));
2694	}
2695
2696	if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2697	    BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2698		return (0);
2699
2700	ddt_key_fill(&zdde_search.zdde_key, bp);
2701
2702	zdde = avl_find(t, &zdde_search, &where);
2703
2704	if (zdde == NULL) {
2705		zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2706		zdde->zdde_key = zdde_search.zdde_key;
2707		avl_insert(t, zdde, where);
2708	}
2709
2710	zdde->zdde_ref_blocks += 1;
2711	zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2712	zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2713	zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2714
2715	return (0);
2716}
2717
2718static void
2719dump_simulated_ddt(spa_t *spa)
2720{
2721	avl_tree_t t;
2722	void *cookie = NULL;
2723	zdb_ddt_entry_t *zdde;
2724	ddt_histogram_t ddh_total = { 0 };
2725	ddt_stat_t dds_total = { 0 };
2726
2727	avl_create(&t, ddt_entry_compare,
2728	    sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2729
2730	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2731
2732	(void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2733	    zdb_ddt_add_cb, &t);
2734
2735	spa_config_exit(spa, SCL_CONFIG, FTAG);
2736
2737	while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2738		ddt_stat_t dds;
2739		uint64_t refcnt = zdde->zdde_ref_blocks;
2740		ASSERT(refcnt != 0);
2741
2742		dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2743		dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2744		dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2745		dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2746
2747		dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2748		dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2749		dds.dds_ref_psize = zdde->zdde_ref_psize;
2750		dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2751
2752		ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
2753		    &dds, 0);
2754
2755		umem_free(zdde, sizeof (*zdde));
2756	}
2757
2758	avl_destroy(&t);
2759
2760	ddt_histogram_stat(&dds_total, &ddh_total);
2761
2762	(void) printf("Simulated DDT histogram:\n");
2763
2764	zpool_dump_ddt(&dds_total, &ddh_total);
2765
2766	dump_dedup_ratio(&dds_total);
2767}
2768
2769static void
2770dump_zpool(spa_t *spa)
2771{
2772	dsl_pool_t *dp = spa_get_dsl(spa);
2773	int rc = 0;
2774
2775	if (dump_opt['S']) {
2776		dump_simulated_ddt(spa);
2777		return;
2778	}
2779
2780	if (!dump_opt['e'] && dump_opt['C'] > 1) {
2781		(void) printf("\nCached configuration:\n");
2782		dump_nvlist(spa->spa_config, 8);
2783	}
2784
2785	if (dump_opt['C'])
2786		dump_config(spa);
2787
2788	if (dump_opt['u'])
2789		dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2790
2791	if (dump_opt['D'])
2792		dump_all_ddts(spa);
2793
2794	if (dump_opt['d'] > 2 || dump_opt['m'])
2795		dump_metaslabs(spa);
2796
2797	if (dump_opt['d'] || dump_opt['i']) {
2798		dump_dir(dp->dp_meta_objset);
2799		if (dump_opt['d'] >= 3) {
2800			dump_bpobj(&spa->spa_deferred_bpobj,
2801			    "Deferred frees", 0);
2802			if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2803				dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2804				    "Pool snapshot frees", 0);
2805			}
2806
2807			if (spa_feature_is_active(spa,
2808			    SPA_FEATURE_ASYNC_DESTROY)) {
2809				dump_bptree(spa->spa_meta_objset,
2810				    spa->spa_dsl_pool->dp_bptree_obj,
2811				    "Pool dataset frees");
2812			}
2813			dump_dtl(spa->spa_root_vdev, 0);
2814		}
2815		(void) dmu_objset_find(spa_name(spa), dump_one_dir,
2816		    NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2817	}
2818	if (dump_opt['b'] || dump_opt['c'])
2819		rc = dump_block_stats(spa);
2820
2821	if (rc == 0)
2822		rc = verify_spacemap_refcounts(spa);
2823
2824	if (dump_opt['s'])
2825		show_pool_stats(spa);
2826
2827	if (dump_opt['h'])
2828		dump_history(spa);
2829
2830	if (rc != 0)
2831		exit(rc);
2832}
2833
2834#define	ZDB_FLAG_CHECKSUM	0x0001
2835#define	ZDB_FLAG_DECOMPRESS	0x0002
2836#define	ZDB_FLAG_BSWAP		0x0004
2837#define	ZDB_FLAG_GBH		0x0008
2838#define	ZDB_FLAG_INDIRECT	0x0010
2839#define	ZDB_FLAG_PHYS		0x0020
2840#define	ZDB_FLAG_RAW		0x0040
2841#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
2842
2843int flagbits[256];
2844
2845static void
2846zdb_print_blkptr(blkptr_t *bp, int flags)
2847{
2848	char blkbuf[BP_SPRINTF_LEN];
2849
2850	if (flags & ZDB_FLAG_BSWAP)
2851		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2852
2853	snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2854	(void) printf("%s\n", blkbuf);
2855}
2856
2857static void
2858zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2859{
2860	int i;
2861
2862	for (i = 0; i < nbps; i++)
2863		zdb_print_blkptr(&bp[i], flags);
2864}
2865
2866static void
2867zdb_dump_gbh(void *buf, int flags)
2868{
2869	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2870}
2871
2872static void
2873zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2874{
2875	if (flags & ZDB_FLAG_BSWAP)
2876		byteswap_uint64_array(buf, size);
2877	(void) write(1, buf, size);
2878}
2879
2880static void
2881zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2882{
2883	uint64_t *d = (uint64_t *)buf;
2884	int nwords = size / sizeof (uint64_t);
2885	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2886	int i, j;
2887	char *hdr, *c;
2888
2889
2890	if (do_bswap)
2891		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2892	else
2893		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2894
2895	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2896
2897	for (i = 0; i < nwords; i += 2) {
2898		(void) printf("%06llx:  %016llx  %016llx  ",
2899		    (u_longlong_t)(i * sizeof (uint64_t)),
2900		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2901		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2902
2903		c = (char *)&d[i];
2904		for (j = 0; j < 2 * sizeof (uint64_t); j++)
2905			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
2906		(void) printf("\n");
2907	}
2908}
2909
2910/*
2911 * There are two acceptable formats:
2912 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
2913 *	child[.child]*    - For example: 0.1.1
2914 *
2915 * The second form can be used to specify arbitrary vdevs anywhere
2916 * in the heirarchy.  For example, in a pool with a mirror of
2917 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2918 */
2919static vdev_t *
2920zdb_vdev_lookup(vdev_t *vdev, char *path)
2921{
2922	char *s, *p, *q;
2923	int i;
2924
2925	if (vdev == NULL)
2926		return (NULL);
2927
2928	/* First, assume the x.x.x.x format */
2929	i = (int)strtoul(path, &s, 10);
2930	if (s == path || (s && *s != '.' && *s != '\0'))
2931		goto name;
2932	if (i < 0 || i >= vdev->vdev_children)
2933		return (NULL);
2934
2935	vdev = vdev->vdev_child[i];
2936	if (*s == '\0')
2937		return (vdev);
2938	return (zdb_vdev_lookup(vdev, s+1));
2939
2940name:
2941	for (i = 0; i < vdev->vdev_children; i++) {
2942		vdev_t *vc = vdev->vdev_child[i];
2943
2944		if (vc->vdev_path == NULL) {
2945			vc = zdb_vdev_lookup(vc, path);
2946			if (vc == NULL)
2947				continue;
2948			else
2949				return (vc);
2950		}
2951
2952		p = strrchr(vc->vdev_path, '/');
2953		p = p ? p + 1 : vc->vdev_path;
2954		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2955
2956		if (strcmp(vc->vdev_path, path) == 0)
2957			return (vc);
2958		if (strcmp(p, path) == 0)
2959			return (vc);
2960		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2961			return (vc);
2962	}
2963
2964	return (NULL);
2965}
2966
2967/*
2968 * Read a block from a pool and print it out.  The syntax of the
2969 * block descriptor is:
2970 *
2971 *	pool:vdev_specifier:offset:size[:flags]
2972 *
2973 *	pool           - The name of the pool you wish to read from
2974 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2975 *	offset         - offset, in hex, in bytes
2976 *	size           - Amount of data to read, in hex, in bytes
2977 *	flags          - A string of characters specifying options
2978 *		 b: Decode a blkptr at given offset within block
2979 *		*c: Calculate and display checksums
2980 *		 d: Decompress data before dumping
2981 *		 e: Byteswap data before dumping
2982 *		 g: Display data as a gang block header
2983 *		 i: Display as an indirect block
2984 *		 p: Do I/O to physical offset
2985 *		 r: Dump raw data to stdout
2986 *
2987 *              * = not yet implemented
2988 */
2989static void
2990zdb_read_block(char *thing, spa_t *spa)
2991{
2992	blkptr_t blk, *bp = &blk;
2993	dva_t *dva = bp->blk_dva;
2994	int flags = 0;
2995	uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2996	zio_t *zio;
2997	vdev_t *vd;
2998	void *pbuf, *lbuf, *buf;
2999	char *s, *p, *dup, *vdev, *flagstr;
3000	int i, error;
3001
3002	dup = strdup(thing);
3003	s = strtok(dup, ":");
3004	vdev = s ? s : "";
3005	s = strtok(NULL, ":");
3006	offset = strtoull(s ? s : "", NULL, 16);
3007	s = strtok(NULL, ":");
3008	size = strtoull(s ? s : "", NULL, 16);
3009	s = strtok(NULL, ":");
3010	flagstr = s ? s : "";
3011
3012	s = NULL;
3013	if (size == 0)
3014		s = "size must not be zero";
3015	if (!IS_P2ALIGNED(size, DEV_BSIZE))
3016		s = "size must be a multiple of sector size";
3017	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3018		s = "offset must be a multiple of sector size";
3019	if (s) {
3020		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3021		free(dup);
3022		return;
3023	}
3024
3025	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3026		for (i = 0; flagstr[i]; i++) {
3027			int bit = flagbits[(uchar_t)flagstr[i]];
3028
3029			if (bit == 0) {
3030				(void) printf("***Invalid flag: %c\n",
3031				    flagstr[i]);
3032				continue;
3033			}
3034			flags |= bit;
3035
3036			/* If it's not something with an argument, keep going */
3037			if ((bit & (ZDB_FLAG_CHECKSUM |
3038			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
3039				continue;
3040
3041			p = &flagstr[i + 1];
3042			if (bit == ZDB_FLAG_PRINT_BLKPTR)
3043				blkptr_offset = strtoull(p, &p, 16);
3044			if (*p != ':' && *p != '\0') {
3045				(void) printf("***Invalid flag arg: '%s'\n", s);
3046				free(dup);
3047				return;
3048			}
3049		}
3050	}
3051
3052	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3053	if (vd == NULL) {
3054		(void) printf("***Invalid vdev: %s\n", vdev);
3055		free(dup);
3056		return;
3057	} else {
3058		if (vd->vdev_path)
3059			(void) fprintf(stderr, "Found vdev: %s\n",
3060			    vd->vdev_path);
3061		else
3062			(void) fprintf(stderr, "Found vdev type: %s\n",
3063			    vd->vdev_ops->vdev_op_type);
3064	}
3065
3066	psize = size;
3067	lsize = size;
3068
3069	pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3070	lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3071
3072	BP_ZERO(bp);
3073
3074	DVA_SET_VDEV(&dva[0], vd->vdev_id);
3075	DVA_SET_OFFSET(&dva[0], offset);
3076	DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3077	DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3078
3079	BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3080
3081	BP_SET_LSIZE(bp, lsize);
3082	BP_SET_PSIZE(bp, psize);
3083	BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3084	BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3085	BP_SET_TYPE(bp, DMU_OT_NONE);
3086	BP_SET_LEVEL(bp, 0);
3087	BP_SET_DEDUP(bp, 0);
3088	BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3089
3090	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3091	zio = zio_root(spa, NULL, NULL, 0);
3092
3093	if (vd == vd->vdev_top) {
3094		/*
3095		 * Treat this as a normal block read.
3096		 */
3097		zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3098		    ZIO_PRIORITY_SYNC_READ,
3099		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3100	} else {
3101		/*
3102		 * Treat this as a vdev child I/O.
3103		 */
3104		zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3105		    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3106		    ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3107		    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3108		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3109	}
3110
3111	error = zio_wait(zio);
3112	spa_config_exit(spa, SCL_STATE, FTAG);
3113
3114	if (error) {
3115		(void) printf("Read of %s failed, error: %d\n", thing, error);
3116		goto out;
3117	}
3118
3119	if (flags & ZDB_FLAG_DECOMPRESS) {
3120		/*
3121		 * We don't know how the data was compressed, so just try
3122		 * every decompress function at every inflated blocksize.
3123		 */
3124		enum zio_compress c;
3125		void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3126		void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3127
3128		bcopy(pbuf, pbuf2, psize);
3129
3130		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3131		    SPA_MAXBLOCKSIZE - psize) == 0);
3132
3133		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3134		    SPA_MAXBLOCKSIZE - psize) == 0);
3135
3136		for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3137		    lsize -= SPA_MINBLOCKSIZE) {
3138			for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3139				if (zio_decompress_data(c, pbuf, lbuf,
3140				    psize, lsize) == 0 &&
3141				    zio_decompress_data(c, pbuf2, lbuf2,
3142				    psize, lsize) == 0 &&
3143				    bcmp(lbuf, lbuf2, lsize) == 0)
3144					break;
3145			}
3146			if (c != ZIO_COMPRESS_FUNCTIONS)
3147				break;
3148			lsize -= SPA_MINBLOCKSIZE;
3149		}
3150
3151		umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3152		umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3153
3154		if (lsize <= psize) {
3155			(void) printf("Decompress of %s failed\n", thing);
3156			goto out;
3157		}
3158		buf = lbuf;
3159		size = lsize;
3160	} else {
3161		buf = pbuf;
3162		size = psize;
3163	}
3164
3165	if (flags & ZDB_FLAG_PRINT_BLKPTR)
3166		zdb_print_blkptr((blkptr_t *)(void *)
3167		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3168	else if (flags & ZDB_FLAG_RAW)
3169		zdb_dump_block_raw(buf, size, flags);
3170	else if (flags & ZDB_FLAG_INDIRECT)
3171		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3172		    flags);
3173	else if (flags & ZDB_FLAG_GBH)
3174		zdb_dump_gbh(buf, flags);
3175	else
3176		zdb_dump_block(thing, buf, size, flags);
3177
3178out:
3179	umem_free(pbuf, SPA_MAXBLOCKSIZE);
3180	umem_free(lbuf, SPA_MAXBLOCKSIZE);
3181	free(dup);
3182}
3183
3184static boolean_t
3185pool_match(nvlist_t *cfg, char *tgt)
3186{
3187	uint64_t v, guid = strtoull(tgt, NULL, 0);
3188	char *s;
3189
3190	if (guid != 0) {
3191		if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3192			return (v == guid);
3193	} else {
3194		if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3195			return (strcmp(s, tgt) == 0);
3196	}
3197	return (B_FALSE);
3198}
3199
3200static char *
3201find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3202{
3203	nvlist_t *pools;
3204	nvlist_t *match = NULL;
3205	char *name = NULL;
3206	char *sepp = NULL;
3207	char sep;
3208	int count = 0;
3209	importargs_t args = { 0 };
3210
3211	args.paths = dirc;
3212	args.path = dirv;
3213	args.can_be_active = B_TRUE;
3214
3215	if ((sepp = strpbrk(*target, "/@")) != NULL) {
3216		sep = *sepp;
3217		*sepp = '\0';
3218	}
3219
3220	pools = zpool_search_import(g_zfs, &args);
3221
3222	if (pools != NULL) {
3223		nvpair_t *elem = NULL;
3224		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3225			verify(nvpair_value_nvlist(elem, configp) == 0);
3226			if (pool_match(*configp, *target)) {
3227				count++;
3228				if (match != NULL) {
3229					/* print previously found config */
3230					if (name != NULL) {
3231						(void) printf("%s\n", name);
3232						dump_nvlist(match, 8);
3233						name = NULL;
3234					}
3235					(void) printf("%s\n",
3236					    nvpair_name(elem));
3237					dump_nvlist(*configp, 8);
3238				} else {
3239					match = *configp;
3240					name = nvpair_name(elem);
3241				}
3242			}
3243		}
3244	}
3245	if (count > 1)
3246		(void) fatal("\tMatched %d pools - use pool GUID "
3247		    "instead of pool name or \n"
3248		    "\tpool name part of a dataset name to select pool", count);
3249
3250	if (sepp)
3251		*sepp = sep;
3252	/*
3253	 * If pool GUID was specified for pool id, replace it with pool name
3254	 */
3255	if (name && (strstr(*target, name) != *target)) {
3256		int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3257
3258		*target = umem_alloc(sz, UMEM_NOFAIL);
3259		(void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3260	}
3261
3262	*configp = name ? match : NULL;
3263
3264	return (name);
3265}
3266
3267int
3268main(int argc, char **argv)
3269{
3270	int i, c;
3271	struct rlimit rl = { 1024, 1024 };
3272	spa_t *spa = NULL;
3273	objset_t *os = NULL;
3274	int dump_all = 1;
3275	int verbose = 0;
3276	int error = 0;
3277	char **searchdirs = NULL;
3278	int nsearch = 0;
3279	char *target;
3280	nvlist_t *policy = NULL;
3281	uint64_t max_txg = UINT64_MAX;
3282	int rewind = ZPOOL_NEVER_REWIND;
3283
3284	(void) setrlimit(RLIMIT_NOFILE, &rl);
3285	(void) enable_extended_FILE_stdio(-1, -1);
3286
3287	dprintf_setup(&argc, argv);
3288
3289	while ((c = getopt(argc, argv, "bcdhilmM:suCDRSAFLXevp:t:U:P")) != -1) {
3290		switch (c) {
3291		case 'b':
3292		case 'c':
3293		case 'd':
3294		case 'h':
3295		case 'i':
3296		case 'l':
3297		case 'm':
3298		case 's':
3299		case 'u':
3300		case 'C':
3301		case 'D':
3302		case 'R':
3303		case 'S':
3304			dump_opt[c]++;
3305			dump_all = 0;
3306			break;
3307		case 'A':
3308		case 'F':
3309		case 'L':
3310		case 'X':
3311		case 'e':
3312		case 'P':
3313			dump_opt[c]++;
3314			break;
3315		case 'v':
3316			verbose++;
3317			break;
3318		case 'M':
3319			max_inflight = strtoull(optarg, NULL, 0);
3320			if (max_inflight == 0) {
3321				(void) fprintf(stderr, "maximum number "
3322				    "of inflight I/Os must be greater "
3323				    "than 0\n");
3324				usage();
3325			}
3326			break;
3327		case 'p':
3328			if (searchdirs == NULL) {
3329				searchdirs = umem_alloc(sizeof (char *),
3330				    UMEM_NOFAIL);
3331			} else {
3332				char **tmp = umem_alloc((nsearch + 1) *
3333				    sizeof (char *), UMEM_NOFAIL);
3334				bcopy(searchdirs, tmp, nsearch *
3335				    sizeof (char *));
3336				umem_free(searchdirs,
3337				    nsearch * sizeof (char *));
3338				searchdirs = tmp;
3339			}
3340			searchdirs[nsearch++] = optarg;
3341			break;
3342		case 't':
3343			max_txg = strtoull(optarg, NULL, 0);
3344			if (max_txg < TXG_INITIAL) {
3345				(void) fprintf(stderr, "incorrect txg "
3346				    "specified: %s\n", optarg);
3347				usage();
3348			}
3349			break;
3350		case 'U':
3351			spa_config_path = optarg;
3352			break;
3353		default:
3354			usage();
3355			break;
3356		}
3357	}
3358
3359	if (!dump_opt['e'] && searchdirs != NULL) {
3360		(void) fprintf(stderr, "-p option requires use of -e\n");
3361		usage();
3362	}
3363
3364	kernel_init(FREAD);
3365	g_zfs = libzfs_init();
3366	ASSERT(g_zfs != NULL);
3367
3368	if (dump_all)
3369		verbose = MAX(verbose, 1);
3370
3371	for (c = 0; c < 256; c++) {
3372		if (dump_all && !strchr("elAFLRSXP", c))
3373			dump_opt[c] = 1;
3374		if (dump_opt[c])
3375			dump_opt[c] += verbose;
3376	}
3377
3378	aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3379	zfs_recover = (dump_opt['A'] > 1);
3380
3381	argc -= optind;
3382	argv += optind;
3383
3384	if (argc < 2 && dump_opt['R'])
3385		usage();
3386	if (argc < 1) {
3387		if (!dump_opt['e'] && dump_opt['C']) {
3388			dump_cachefile(spa_config_path);
3389			return (0);
3390		}
3391		usage();
3392	}
3393
3394	if (dump_opt['l']) {
3395		dump_label(argv[0]);
3396		return (0);
3397	}
3398
3399	if (dump_opt['X'] || dump_opt['F'])
3400		rewind = ZPOOL_DO_REWIND |
3401		    (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3402
3403	if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3404	    nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3405	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3406		fatal("internal error: %s", strerror(ENOMEM));
3407
3408	error = 0;
3409	target = argv[0];
3410
3411	if (dump_opt['e']) {
3412		nvlist_t *cfg = NULL;
3413		char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3414
3415		error = ENOENT;
3416		if (name) {
3417			if (dump_opt['C'] > 1) {
3418				(void) printf("\nConfiguration for import:\n");
3419				dump_nvlist(cfg, 8);
3420			}
3421			if (nvlist_add_nvlist(cfg,
3422			    ZPOOL_REWIND_POLICY, policy) != 0) {
3423				fatal("can't open '%s': %s",
3424				    target, strerror(ENOMEM));
3425			}
3426			if ((error = spa_import(name, cfg, NULL,
3427			    ZFS_IMPORT_MISSING_LOG)) != 0) {
3428				error = spa_import(name, cfg, NULL,
3429				    ZFS_IMPORT_VERBATIM);
3430			}
3431		}
3432	}
3433
3434	if (error == 0) {
3435		if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3436			error = spa_open_rewind(target, &spa, FTAG, policy,
3437			    NULL);
3438			if (error) {
3439				/*
3440				 * If we're missing the log device then
3441				 * try opening the pool after clearing the
3442				 * log state.
3443				 */
3444				mutex_enter(&spa_namespace_lock);
3445				if ((spa = spa_lookup(target)) != NULL &&
3446				    spa->spa_log_state == SPA_LOG_MISSING) {
3447					spa->spa_log_state = SPA_LOG_CLEAR;
3448					error = 0;
3449				}
3450				mutex_exit(&spa_namespace_lock);
3451
3452				if (!error) {
3453					error = spa_open_rewind(target, &spa,
3454					    FTAG, policy, NULL);
3455				}
3456			}
3457		} else {
3458			error = dmu_objset_own(target, DMU_OST_ANY,
3459			    B_TRUE, FTAG, &os);
3460		}
3461	}
3462	nvlist_free(policy);
3463
3464	if (error)
3465		fatal("can't open '%s': %s", target, strerror(error));
3466
3467	argv++;
3468	argc--;
3469	if (!dump_opt['R']) {
3470		if (argc > 0) {
3471			zopt_objects = argc;
3472			zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3473			for (i = 0; i < zopt_objects; i++) {
3474				errno = 0;
3475				zopt_object[i] = strtoull(argv[i], NULL, 0);
3476				if (zopt_object[i] == 0 && errno != 0)
3477					fatal("bad number %s: %s",
3478					    argv[i], strerror(errno));
3479			}
3480		}
3481		if (os != NULL) {
3482			dump_dir(os);
3483		} else if (zopt_objects > 0 && !dump_opt['m']) {
3484			dump_dir(spa->spa_meta_objset);
3485		} else {
3486			dump_zpool(spa);
3487		}
3488	} else {
3489		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3490		flagbits['c'] = ZDB_FLAG_CHECKSUM;
3491		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3492		flagbits['e'] = ZDB_FLAG_BSWAP;
3493		flagbits['g'] = ZDB_FLAG_GBH;
3494		flagbits['i'] = ZDB_FLAG_INDIRECT;
3495		flagbits['p'] = ZDB_FLAG_PHYS;
3496		flagbits['r'] = ZDB_FLAG_RAW;
3497
3498		for (i = 0; i < argc; i++)
3499			zdb_read_block(argv[i], spa);
3500	}
3501
3502	(os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3503
3504	fuid_table_destroy();
3505	sa_loaded = B_FALSE;
3506
3507	libzfs_fini(g_zfs);
3508	kernel_fini();
3509
3510	return (0);
3511}
3512