zdb.c revision 0713e232b7712cd27d99e1e935ebb8d5de61c57d
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2013 by Delphix. All rights reserved.
25 */
26
27#include <stdio.h>
28#include <unistd.h>
29#include <stdio_ext.h>
30#include <stdlib.h>
31#include <ctype.h>
32#include <sys/zfs_context.h>
33#include <sys/spa.h>
34#include <sys/spa_impl.h>
35#include <sys/dmu.h>
36#include <sys/zap.h>
37#include <sys/fs/zfs.h>
38#include <sys/zfs_znode.h>
39#include <sys/zfs_sa.h>
40#include <sys/sa.h>
41#include <sys/sa_impl.h>
42#include <sys/vdev.h>
43#include <sys/vdev_impl.h>
44#include <sys/metaslab_impl.h>
45#include <sys/dmu_objset.h>
46#include <sys/dsl_dir.h>
47#include <sys/dsl_dataset.h>
48#include <sys/dsl_pool.h>
49#include <sys/dbuf.h>
50#include <sys/zil.h>
51#include <sys/zil_impl.h>
52#include <sys/stat.h>
53#include <sys/resource.h>
54#include <sys/dmu_traverse.h>
55#include <sys/zio_checksum.h>
56#include <sys/zio_compress.h>
57#include <sys/zfs_fuid.h>
58#include <sys/arc.h>
59#include <sys/ddt.h>
60#include <sys/zfeature.h>
61#include <zfs_comutil.h>
62#undef ZFS_MAXNAMELEN
63#undef verify
64#include <libzfs.h>
65
66#define	ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?	\
67	zio_compress_table[(idx)].ci_name : "UNKNOWN")
68#define	ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?	\
69	zio_checksum_table[(idx)].ci_name : "UNKNOWN")
70#define	ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?	\
71	dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?	\
72	dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
73#define	ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :		\
74	(((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ?	\
75	DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
76
77#ifndef lint
78extern int zfs_recover;
79#else
80int zfs_recover;
81#endif
82
83const char cmdname[] = "zdb";
84uint8_t dump_opt[256];
85
86typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
87
88extern void dump_intent_log(zilog_t *);
89uint64_t *zopt_object = NULL;
90int zopt_objects = 0;
91libzfs_handle_t *g_zfs;
92uint64_t max_inflight = 200;
93
94/*
95 * These libumem hooks provide a reasonable set of defaults for the allocator's
96 * debugging facilities.
97 */
98const char *
99_umem_debug_init()
100{
101	return ("default,verbose"); /* $UMEM_DEBUG setting */
102}
103
104const char *
105_umem_logging_init(void)
106{
107	return ("fail,contents"); /* $UMEM_LOGGING setting */
108}
109
110static void
111usage(void)
112{
113	(void) fprintf(stderr,
114	    "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
115	    "[-U config] [-M inflight I/Os] poolname [object...]\n"
116	    "       %s [-divPA] [-e -p path...] [-U config] dataset "
117	    "[object...]\n"
118	    "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
119	    "poolname [vdev [metaslab...]]\n"
120	    "       %s -R [-A] [-e [-p path...]] poolname "
121	    "vdev:offset:size[:flags]\n"
122	    "       %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
123	    "       %s -l [-uA] device\n"
124	    "       %s -C [-A] [-U config]\n\n",
125	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
126
127	(void) fprintf(stderr, "    Dataset name must include at least one "
128	    "separator character '/' or '@'\n");
129	(void) fprintf(stderr, "    If dataset name is specified, only that "
130	    "dataset is dumped\n");
131	(void) fprintf(stderr, "    If object numbers are specified, only "
132	    "those objects are dumped\n\n");
133	(void) fprintf(stderr, "    Options to control amount of output:\n");
134	(void) fprintf(stderr, "        -u uberblock\n");
135	(void) fprintf(stderr, "        -d dataset(s)\n");
136	(void) fprintf(stderr, "        -i intent logs\n");
137	(void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
138	(void) fprintf(stderr, "        -h pool history\n");
139	(void) fprintf(stderr, "        -b block statistics\n");
140	(void) fprintf(stderr, "        -m metaslabs\n");
141	(void) fprintf(stderr, "        -c checksum all metadata (twice for "
142	    "all data) blocks\n");
143	(void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
144	(void) fprintf(stderr, "        -D dedup statistics\n");
145	(void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
146	(void) fprintf(stderr, "        -v verbose (applies to all others)\n");
147	(void) fprintf(stderr, "        -l dump label contents\n");
148	(void) fprintf(stderr, "        -L disable leak tracking (do not "
149	    "load spacemaps)\n");
150	(void) fprintf(stderr, "        -R read and display block from a "
151	    "device\n\n");
152	(void) fprintf(stderr, "    Below options are intended for use "
153	    "with other options (except -l):\n");
154	(void) fprintf(stderr, "        -A ignore assertions (-A), enable "
155	    "panic recovery (-AA) or both (-AAA)\n");
156	(void) fprintf(stderr, "        -F attempt automatic rewind within "
157	    "safe range of transaction groups\n");
158	(void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
159	    "cachefile\n");
160	(void) fprintf(stderr, "        -X attempt extreme rewind (does not "
161	    "work with dataset)\n");
162	(void) fprintf(stderr, "        -e pool is exported/destroyed/"
163	    "has altroot/not in a cachefile\n");
164	(void) fprintf(stderr, "        -p <path> -- use one or more with "
165	    "-e to specify path to vdev dir\n");
166	(void) fprintf(stderr, "        -P print numbers in parseable form\n");
167	(void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
168	    "searching for uberblocks\n");
169	(void) fprintf(stderr, "        -M <number of inflight I/Os> -- "
170	    "specify the maximum number of checksumming I/Os [default is 200]");
171	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
172	    "to make only that option verbose\n");
173	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
174	exit(1);
175}
176
177/*
178 * Called for usage errors that are discovered after a call to spa_open(),
179 * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
180 */
181
182static void
183fatal(const char *fmt, ...)
184{
185	va_list ap;
186
187	va_start(ap, fmt);
188	(void) fprintf(stderr, "%s: ", cmdname);
189	(void) vfprintf(stderr, fmt, ap);
190	va_end(ap);
191	(void) fprintf(stderr, "\n");
192
193	exit(1);
194}
195
196/* ARGSUSED */
197static void
198dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
199{
200	nvlist_t *nv;
201	size_t nvsize = *(uint64_t *)data;
202	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
203
204	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
205
206	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
207
208	umem_free(packed, nvsize);
209
210	dump_nvlist(nv, 8);
211
212	nvlist_free(nv);
213}
214
215/* ARGSUSED */
216static void
217dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
218{
219	spa_history_phys_t *shp = data;
220
221	if (shp == NULL)
222		return;
223
224	(void) printf("\t\tpool_create_len = %llu\n",
225	    (u_longlong_t)shp->sh_pool_create_len);
226	(void) printf("\t\tphys_max_off = %llu\n",
227	    (u_longlong_t)shp->sh_phys_max_off);
228	(void) printf("\t\tbof = %llu\n",
229	    (u_longlong_t)shp->sh_bof);
230	(void) printf("\t\teof = %llu\n",
231	    (u_longlong_t)shp->sh_eof);
232	(void) printf("\t\trecords_lost = %llu\n",
233	    (u_longlong_t)shp->sh_records_lost);
234}
235
236static void
237zdb_nicenum(uint64_t num, char *buf)
238{
239	if (dump_opt['P'])
240		(void) sprintf(buf, "%llu", (longlong_t)num);
241	else
242		nicenum(num, buf);
243}
244
245const char histo_stars[] = "****************************************";
246const int histo_width = sizeof (histo_stars) - 1;
247
248static void
249dump_histogram(const uint64_t *histo, int size, 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	int expected_refcount, actual_refcount;
567
568	expected_refcount = spa_feature_get_refcount(spa,
569	    &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM]);
570	actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
571	actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
572
573	if (expected_refcount != actual_refcount) {
574		(void) printf("space map refcount mismatch: expected %d != "
575		    "actual %d\n", expected_refcount, actual_refcount);
576		return (2);
577	}
578	return (0);
579}
580
581static void
582dump_spacemap(objset_t *os, space_map_t *sm)
583{
584	uint64_t alloc, offset, entry;
585	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
586			    "INVALID", "INVALID", "INVALID", "INVALID" };
587
588	if (sm == NULL)
589		return;
590
591	/*
592	 * Print out the freelist entries in both encoded and decoded form.
593	 */
594	alloc = 0;
595	for (offset = 0; offset < space_map_length(sm);
596	    offset += sizeof (entry)) {
597		uint8_t mapshift = sm->sm_shift;
598
599		VERIFY0(dmu_read(os, space_map_object(sm), offset,
600		    sizeof (entry), &entry, DMU_READ_PREFETCH));
601		if (SM_DEBUG_DECODE(entry)) {
602
603			(void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
604			    (u_longlong_t)(offset / sizeof (entry)),
605			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
606			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
607			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
608		} else {
609			(void) printf("\t    [%6llu]    %c  range:"
610			    " %010llx-%010llx  size: %06llx\n",
611			    (u_longlong_t)(offset / sizeof (entry)),
612			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
613			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
614			    mapshift) + sm->sm_start),
615			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
616			    mapshift) + sm->sm_start +
617			    (SM_RUN_DECODE(entry) << mapshift)),
618			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
619			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
620				alloc += SM_RUN_DECODE(entry) << mapshift;
621			else
622				alloc -= SM_RUN_DECODE(entry) << mapshift;
623		}
624	}
625	if (alloc != space_map_allocated(sm)) {
626		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
627		    "with space map summary (%llu)\n",
628		    (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
629	}
630}
631
632static void
633dump_metaslab_stats(metaslab_t *msp)
634{
635	char maxbuf[32];
636	range_tree_t *rt = msp->ms_tree;
637	avl_tree_t *t = &msp->ms_size_tree;
638	int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
639
640	zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
641
642	(void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
643	    "segments", avl_numnodes(t), "maxsize", maxbuf,
644	    "freepct", free_pct);
645	(void) printf("\tIn-memory histogram:\n");
646	dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
647}
648
649static void
650dump_metaslab(metaslab_t *msp)
651{
652	vdev_t *vd = msp->ms_group->mg_vd;
653	spa_t *spa = vd->vdev_spa;
654	space_map_t *sm = msp->ms_sm;
655	char freebuf[32];
656
657	zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
658
659	(void) printf(
660	    "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
661	    (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
662	    (u_longlong_t)space_map_object(sm), freebuf);
663
664	if (dump_opt['m'] > 2 && !dump_opt['L']) {
665		mutex_enter(&msp->ms_lock);
666		metaslab_load_wait(msp);
667		if (!msp->ms_loaded) {
668			VERIFY0(metaslab_load(msp));
669			range_tree_stat_verify(msp->ms_tree);
670		}
671		dump_metaslab_stats(msp);
672		metaslab_unload(msp);
673		mutex_exit(&msp->ms_lock);
674	}
675
676	if (dump_opt['m'] > 1 && sm != NULL &&
677	    spa_feature_is_active(spa,
678	    &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM])) {
679		/*
680		 * The space map histogram represents free space in chunks
681		 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
682		 */
683		(void) printf("\tOn-disk histogram:\n");
684		dump_histogram(sm->sm_phys->smp_histogram,
685		    SPACE_MAP_HISTOGRAM_SIZE(sm), sm->sm_shift);
686	}
687
688	if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
689		ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
690
691		mutex_enter(&msp->ms_lock);
692		dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
693		mutex_exit(&msp->ms_lock);
694	}
695}
696
697static void
698print_vdev_metaslab_header(vdev_t *vd)
699{
700	(void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
701	    (u_longlong_t)vd->vdev_id,
702	    "metaslabs", (u_longlong_t)vd->vdev_ms_count,
703	    "offset", "spacemap", "free");
704	(void) printf("\t%15s   %19s   %15s   %10s\n",
705	    "---------------", "-------------------",
706	    "---------------", "-------------");
707}
708
709static void
710dump_metaslabs(spa_t *spa)
711{
712	vdev_t *vd, *rvd = spa->spa_root_vdev;
713	uint64_t m, c = 0, children = rvd->vdev_children;
714
715	(void) printf("\nMetaslabs:\n");
716
717	if (!dump_opt['d'] && zopt_objects > 0) {
718		c = zopt_object[0];
719
720		if (c >= children)
721			(void) fatal("bad vdev id: %llu", (u_longlong_t)c);
722
723		if (zopt_objects > 1) {
724			vd = rvd->vdev_child[c];
725			print_vdev_metaslab_header(vd);
726
727			for (m = 1; m < zopt_objects; m++) {
728				if (zopt_object[m] < vd->vdev_ms_count)
729					dump_metaslab(
730					    vd->vdev_ms[zopt_object[m]]);
731				else
732					(void) fprintf(stderr, "bad metaslab "
733					    "number %llu\n",
734					    (u_longlong_t)zopt_object[m]);
735			}
736			(void) printf("\n");
737			return;
738		}
739		children = c + 1;
740	}
741	for (; c < children; c++) {
742		vd = rvd->vdev_child[c];
743		print_vdev_metaslab_header(vd);
744
745		for (m = 0; m < vd->vdev_ms_count; m++)
746			dump_metaslab(vd->vdev_ms[m]);
747		(void) printf("\n");
748	}
749}
750
751static void
752dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
753{
754	const ddt_phys_t *ddp = dde->dde_phys;
755	const ddt_key_t *ddk = &dde->dde_key;
756	char *types[4] = { "ditto", "single", "double", "triple" };
757	char blkbuf[BP_SPRINTF_LEN];
758	blkptr_t blk;
759
760	for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
761		if (ddp->ddp_phys_birth == 0)
762			continue;
763		ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
764		sprintf_blkptr(blkbuf, &blk);
765		(void) printf("index %llx refcnt %llu %s %s\n",
766		    (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
767		    types[p], blkbuf);
768	}
769}
770
771static void
772dump_dedup_ratio(const ddt_stat_t *dds)
773{
774	double rL, rP, rD, D, dedup, compress, copies;
775
776	if (dds->dds_blocks == 0)
777		return;
778
779	rL = (double)dds->dds_ref_lsize;
780	rP = (double)dds->dds_ref_psize;
781	rD = (double)dds->dds_ref_dsize;
782	D = (double)dds->dds_dsize;
783
784	dedup = rD / D;
785	compress = rL / rP;
786	copies = rD / rP;
787
788	(void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
789	    "dedup * compress / copies = %.2f\n\n",
790	    dedup, compress, copies, dedup * compress / copies);
791}
792
793static void
794dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
795{
796	char name[DDT_NAMELEN];
797	ddt_entry_t dde;
798	uint64_t walk = 0;
799	dmu_object_info_t doi;
800	uint64_t count, dspace, mspace;
801	int error;
802
803	error = ddt_object_info(ddt, type, class, &doi);
804
805	if (error == ENOENT)
806		return;
807	ASSERT(error == 0);
808
809	if ((count = ddt_object_count(ddt, type, class)) == 0)
810		return;
811
812	dspace = doi.doi_physical_blocks_512 << 9;
813	mspace = doi.doi_fill_count * doi.doi_data_block_size;
814
815	ddt_object_name(ddt, type, class, name);
816
817	(void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
818	    name,
819	    (u_longlong_t)count,
820	    (u_longlong_t)(dspace / count),
821	    (u_longlong_t)(mspace / count));
822
823	if (dump_opt['D'] < 3)
824		return;
825
826	zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
827
828	if (dump_opt['D'] < 4)
829		return;
830
831	if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
832		return;
833
834	(void) printf("%s contents:\n\n", name);
835
836	while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
837		dump_dde(ddt, &dde, walk);
838
839	ASSERT(error == ENOENT);
840
841	(void) printf("\n");
842}
843
844static void
845dump_all_ddts(spa_t *spa)
846{
847	ddt_histogram_t ddh_total = { 0 };
848	ddt_stat_t dds_total = { 0 };
849
850	for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
851		ddt_t *ddt = spa->spa_ddt[c];
852		for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
853			for (enum ddt_class class = 0; class < DDT_CLASSES;
854			    class++) {
855				dump_ddt(ddt, type, class);
856			}
857		}
858	}
859
860	ddt_get_dedup_stats(spa, &dds_total);
861
862	if (dds_total.dds_blocks == 0) {
863		(void) printf("All DDTs are empty\n");
864		return;
865	}
866
867	(void) printf("\n");
868
869	if (dump_opt['D'] > 1) {
870		(void) printf("DDT histogram (aggregated over all DDTs):\n");
871		ddt_get_dedup_histogram(spa, &ddh_total);
872		zpool_dump_ddt(&dds_total, &ddh_total);
873	}
874
875	dump_dedup_ratio(&dds_total);
876}
877
878static void
879dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
880{
881	char *prefix = arg;
882
883	(void) printf("%s [%llu,%llu) length %llu\n",
884	    prefix,
885	    (u_longlong_t)start,
886	    (u_longlong_t)(start + size),
887	    (u_longlong_t)(size));
888}
889
890static void
891dump_dtl(vdev_t *vd, int indent)
892{
893	spa_t *spa = vd->vdev_spa;
894	boolean_t required;
895	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
896	char prefix[256];
897
898	spa_vdev_state_enter(spa, SCL_NONE);
899	required = vdev_dtl_required(vd);
900	(void) spa_vdev_state_exit(spa, NULL, 0);
901
902	if (indent == 0)
903		(void) printf("\nDirty time logs:\n\n");
904
905	(void) printf("\t%*s%s [%s]\n", indent, "",
906	    vd->vdev_path ? vd->vdev_path :
907	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
908	    required ? "DTL-required" : "DTL-expendable");
909
910	for (int t = 0; t < DTL_TYPES; t++) {
911		range_tree_t *rt = vd->vdev_dtl[t];
912		if (range_tree_space(rt) == 0)
913			continue;
914		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
915		    indent + 2, "", name[t]);
916		mutex_enter(rt->rt_lock);
917		range_tree_walk(rt, dump_dtl_seg, prefix);
918		mutex_exit(rt->rt_lock);
919		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
920			dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
921	}
922
923	for (int c = 0; c < vd->vdev_children; c++)
924		dump_dtl(vd->vdev_child[c], indent + 4);
925}
926
927static void
928dump_history(spa_t *spa)
929{
930	nvlist_t **events = NULL;
931	char buf[SPA_MAXBLOCKSIZE];
932	uint64_t resid, len, off = 0;
933	uint_t num = 0;
934	int error;
935	time_t tsec;
936	struct tm t;
937	char tbuf[30];
938	char internalstr[MAXPATHLEN];
939
940	do {
941		len = sizeof (buf);
942
943		if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
944			(void) fprintf(stderr, "Unable to read history: "
945			    "error %d\n", error);
946			return;
947		}
948
949		if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
950			break;
951
952		off -= resid;
953	} while (len != 0);
954
955	(void) printf("\nHistory:\n");
956	for (int i = 0; i < num; i++) {
957		uint64_t time, txg, ievent;
958		char *cmd, *intstr;
959		boolean_t printed = B_FALSE;
960
961		if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
962		    &time) != 0)
963			goto next;
964		if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
965		    &cmd) != 0) {
966			if (nvlist_lookup_uint64(events[i],
967			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
968				goto next;
969			verify(nvlist_lookup_uint64(events[i],
970			    ZPOOL_HIST_TXG, &txg) == 0);
971			verify(nvlist_lookup_string(events[i],
972			    ZPOOL_HIST_INT_STR, &intstr) == 0);
973			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
974				goto next;
975
976			(void) snprintf(internalstr,
977			    sizeof (internalstr),
978			    "[internal %s txg:%lld] %s",
979			    zfs_history_event_names[ievent], txg,
980			    intstr);
981			cmd = internalstr;
982		}
983		tsec = time;
984		(void) localtime_r(&tsec, &t);
985		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
986		(void) printf("%s %s\n", tbuf, cmd);
987		printed = B_TRUE;
988
989next:
990		if (dump_opt['h'] > 1) {
991			if (!printed)
992				(void) printf("unrecognized record:\n");
993			dump_nvlist(events[i], 2);
994		}
995	}
996}
997
998/*ARGSUSED*/
999static void
1000dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1001{
1002}
1003
1004static uint64_t
1005blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
1006{
1007	if (dnp == NULL) {
1008		ASSERT(zb->zb_level < 0);
1009		if (zb->zb_object == 0)
1010			return (zb->zb_blkid);
1011		return (zb->zb_blkid * BP_GET_LSIZE(bp));
1012	}
1013
1014	ASSERT(zb->zb_level >= 0);
1015
1016	return ((zb->zb_blkid <<
1017	    (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1018	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1019}
1020
1021static void
1022sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
1023{
1024	const dva_t *dva = bp->blk_dva;
1025	int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1026
1027	if (dump_opt['b'] >= 6) {
1028		sprintf_blkptr(blkbuf, bp);
1029		return;
1030	}
1031
1032	blkbuf[0] = '\0';
1033
1034	for (int i = 0; i < ndvas; i++)
1035		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
1036		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1037		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1038		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1039
1040	(void) sprintf(blkbuf + strlen(blkbuf),
1041	    "%llxL/%llxP F=%llu B=%llu/%llu",
1042	    (u_longlong_t)BP_GET_LSIZE(bp),
1043	    (u_longlong_t)BP_GET_PSIZE(bp),
1044	    (u_longlong_t)bp->blk_fill,
1045	    (u_longlong_t)bp->blk_birth,
1046	    (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1047}
1048
1049static void
1050print_indirect(blkptr_t *bp, const zbookmark_t *zb,
1051    const dnode_phys_t *dnp)
1052{
1053	char blkbuf[BP_SPRINTF_LEN];
1054	int l;
1055
1056	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1057	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1058
1059	(void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1060
1061	ASSERT(zb->zb_level >= 0);
1062
1063	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1064		if (l == zb->zb_level) {
1065			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
1066		} else {
1067			(void) printf(" ");
1068		}
1069	}
1070
1071	sprintf_blkptr_compact(blkbuf, bp);
1072	(void) printf("%s\n", blkbuf);
1073}
1074
1075static int
1076visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1077    blkptr_t *bp, const zbookmark_t *zb)
1078{
1079	int err = 0;
1080
1081	if (bp->blk_birth == 0)
1082		return (0);
1083
1084	print_indirect(bp, zb, dnp);
1085
1086	if (BP_GET_LEVEL(bp) > 0) {
1087		uint32_t flags = ARC_WAIT;
1088		int i;
1089		blkptr_t *cbp;
1090		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1091		arc_buf_t *buf;
1092		uint64_t fill = 0;
1093
1094		err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1095		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1096		if (err)
1097			return (err);
1098		ASSERT(buf->b_data);
1099
1100		/* recursively visit blocks below this */
1101		cbp = buf->b_data;
1102		for (i = 0; i < epb; i++, cbp++) {
1103			zbookmark_t czb;
1104
1105			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1106			    zb->zb_level - 1,
1107			    zb->zb_blkid * epb + i);
1108			err = visit_indirect(spa, dnp, cbp, &czb);
1109			if (err)
1110				break;
1111			fill += cbp->blk_fill;
1112		}
1113		if (!err)
1114			ASSERT3U(fill, ==, bp->blk_fill);
1115		(void) arc_buf_remove_ref(buf, &buf);
1116	}
1117
1118	return (err);
1119}
1120
1121/*ARGSUSED*/
1122static void
1123dump_indirect(dnode_t *dn)
1124{
1125	dnode_phys_t *dnp = dn->dn_phys;
1126	int j;
1127	zbookmark_t czb;
1128
1129	(void) printf("Indirect blocks:\n");
1130
1131	SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1132	    dn->dn_object, dnp->dn_nlevels - 1, 0);
1133	for (j = 0; j < dnp->dn_nblkptr; j++) {
1134		czb.zb_blkid = j;
1135		(void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1136		    &dnp->dn_blkptr[j], &czb);
1137	}
1138
1139	(void) printf("\n");
1140}
1141
1142/*ARGSUSED*/
1143static void
1144dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1145{
1146	dsl_dir_phys_t *dd = data;
1147	time_t crtime;
1148	char nice[32];
1149
1150	if (dd == NULL)
1151		return;
1152
1153	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1154
1155	crtime = dd->dd_creation_time;
1156	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1157	(void) printf("\t\thead_dataset_obj = %llu\n",
1158	    (u_longlong_t)dd->dd_head_dataset_obj);
1159	(void) printf("\t\tparent_dir_obj = %llu\n",
1160	    (u_longlong_t)dd->dd_parent_obj);
1161	(void) printf("\t\torigin_obj = %llu\n",
1162	    (u_longlong_t)dd->dd_origin_obj);
1163	(void) printf("\t\tchild_dir_zapobj = %llu\n",
1164	    (u_longlong_t)dd->dd_child_dir_zapobj);
1165	zdb_nicenum(dd->dd_used_bytes, nice);
1166	(void) printf("\t\tused_bytes = %s\n", nice);
1167	zdb_nicenum(dd->dd_compressed_bytes, nice);
1168	(void) printf("\t\tcompressed_bytes = %s\n", nice);
1169	zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1170	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
1171	zdb_nicenum(dd->dd_quota, nice);
1172	(void) printf("\t\tquota = %s\n", nice);
1173	zdb_nicenum(dd->dd_reserved, nice);
1174	(void) printf("\t\treserved = %s\n", nice);
1175	(void) printf("\t\tprops_zapobj = %llu\n",
1176	    (u_longlong_t)dd->dd_props_zapobj);
1177	(void) printf("\t\tdeleg_zapobj = %llu\n",
1178	    (u_longlong_t)dd->dd_deleg_zapobj);
1179	(void) printf("\t\tflags = %llx\n",
1180	    (u_longlong_t)dd->dd_flags);
1181
1182#define	DO(which) \
1183	zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1184	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1185	DO(HEAD);
1186	DO(SNAP);
1187	DO(CHILD);
1188	DO(CHILD_RSRV);
1189	DO(REFRSRV);
1190#undef DO
1191}
1192
1193/*ARGSUSED*/
1194static void
1195dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1196{
1197	dsl_dataset_phys_t *ds = data;
1198	time_t crtime;
1199	char used[32], compressed[32], uncompressed[32], unique[32];
1200	char blkbuf[BP_SPRINTF_LEN];
1201
1202	if (ds == NULL)
1203		return;
1204
1205	ASSERT(size == sizeof (*ds));
1206	crtime = ds->ds_creation_time;
1207	zdb_nicenum(ds->ds_referenced_bytes, used);
1208	zdb_nicenum(ds->ds_compressed_bytes, compressed);
1209	zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1210	zdb_nicenum(ds->ds_unique_bytes, unique);
1211	sprintf_blkptr(blkbuf, &ds->ds_bp);
1212
1213	(void) printf("\t\tdir_obj = %llu\n",
1214	    (u_longlong_t)ds->ds_dir_obj);
1215	(void) printf("\t\tprev_snap_obj = %llu\n",
1216	    (u_longlong_t)ds->ds_prev_snap_obj);
1217	(void) printf("\t\tprev_snap_txg = %llu\n",
1218	    (u_longlong_t)ds->ds_prev_snap_txg);
1219	(void) printf("\t\tnext_snap_obj = %llu\n",
1220	    (u_longlong_t)ds->ds_next_snap_obj);
1221	(void) printf("\t\tsnapnames_zapobj = %llu\n",
1222	    (u_longlong_t)ds->ds_snapnames_zapobj);
1223	(void) printf("\t\tnum_children = %llu\n",
1224	    (u_longlong_t)ds->ds_num_children);
1225	(void) printf("\t\tuserrefs_obj = %llu\n",
1226	    (u_longlong_t)ds->ds_userrefs_obj);
1227	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1228	(void) printf("\t\tcreation_txg = %llu\n",
1229	    (u_longlong_t)ds->ds_creation_txg);
1230	(void) printf("\t\tdeadlist_obj = %llu\n",
1231	    (u_longlong_t)ds->ds_deadlist_obj);
1232	(void) printf("\t\tused_bytes = %s\n", used);
1233	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
1234	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1235	(void) printf("\t\tunique = %s\n", unique);
1236	(void) printf("\t\tfsid_guid = %llu\n",
1237	    (u_longlong_t)ds->ds_fsid_guid);
1238	(void) printf("\t\tguid = %llu\n",
1239	    (u_longlong_t)ds->ds_guid);
1240	(void) printf("\t\tflags = %llx\n",
1241	    (u_longlong_t)ds->ds_flags);
1242	(void) printf("\t\tnext_clones_obj = %llu\n",
1243	    (u_longlong_t)ds->ds_next_clones_obj);
1244	(void) printf("\t\tprops_obj = %llu\n",
1245	    (u_longlong_t)ds->ds_props_obj);
1246	(void) printf("\t\tbp = %s\n", blkbuf);
1247}
1248
1249/* ARGSUSED */
1250static int
1251dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1252{
1253	char blkbuf[BP_SPRINTF_LEN];
1254
1255	if (bp->blk_birth != 0) {
1256		sprintf_blkptr(blkbuf, bp);
1257		(void) printf("\t%s\n", blkbuf);
1258	}
1259	return (0);
1260}
1261
1262static void
1263dump_bptree(objset_t *os, uint64_t obj, char *name)
1264{
1265	char bytes[32];
1266	bptree_phys_t *bt;
1267	dmu_buf_t *db;
1268
1269	if (dump_opt['d'] < 3)
1270		return;
1271
1272	VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1273	bt = db->db_data;
1274	zdb_nicenum(bt->bt_bytes, bytes);
1275	(void) printf("\n    %s: %llu datasets, %s\n",
1276	    name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1277	dmu_buf_rele(db, FTAG);
1278
1279	if (dump_opt['d'] < 5)
1280		return;
1281
1282	(void) printf("\n");
1283
1284	(void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1285}
1286
1287/* ARGSUSED */
1288static int
1289dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1290{
1291	char blkbuf[BP_SPRINTF_LEN];
1292
1293	ASSERT(bp->blk_birth != 0);
1294	sprintf_blkptr_compact(blkbuf, bp);
1295	(void) printf("\t%s\n", blkbuf);
1296	return (0);
1297}
1298
1299static void
1300dump_bpobj(bpobj_t *bpo, char *name, int indent)
1301{
1302	char bytes[32];
1303	char comp[32];
1304	char uncomp[32];
1305
1306	if (dump_opt['d'] < 3)
1307		return;
1308
1309	zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1310	if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1311		zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1312		zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1313		(void) printf("    %*s: object %llu, %llu local blkptrs, "
1314		    "%llu subobjs, %s (%s/%s comp)\n",
1315		    indent * 8, name,
1316		    (u_longlong_t)bpo->bpo_object,
1317		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1318		    (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1319		    bytes, comp, uncomp);
1320
1321		for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1322			uint64_t subobj;
1323			bpobj_t subbpo;
1324			int error;
1325			VERIFY0(dmu_read(bpo->bpo_os,
1326			    bpo->bpo_phys->bpo_subobjs,
1327			    i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1328			error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1329			if (error != 0) {
1330				(void) printf("ERROR %u while trying to open "
1331				    "subobj id %llu\n",
1332				    error, (u_longlong_t)subobj);
1333				continue;
1334			}
1335			dump_bpobj(&subbpo, "subobj", indent + 1);
1336			bpobj_close(&subbpo);
1337		}
1338	} else {
1339		(void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1340		    indent * 8, name,
1341		    (u_longlong_t)bpo->bpo_object,
1342		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1343		    bytes);
1344	}
1345
1346	if (dump_opt['d'] < 5)
1347		return;
1348
1349
1350	if (indent == 0) {
1351		(void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1352		(void) printf("\n");
1353	}
1354}
1355
1356static void
1357dump_deadlist(dsl_deadlist_t *dl)
1358{
1359	dsl_deadlist_entry_t *dle;
1360	uint64_t unused;
1361	char bytes[32];
1362	char comp[32];
1363	char uncomp[32];
1364
1365	if (dump_opt['d'] < 3)
1366		return;
1367
1368	zdb_nicenum(dl->dl_phys->dl_used, bytes);
1369	zdb_nicenum(dl->dl_phys->dl_comp, comp);
1370	zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1371	(void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1372	    bytes, comp, uncomp);
1373
1374	if (dump_opt['d'] < 4)
1375		return;
1376
1377	(void) printf("\n");
1378
1379	/* force the tree to be loaded */
1380	dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1381
1382	for (dle = avl_first(&dl->dl_tree); dle;
1383	    dle = AVL_NEXT(&dl->dl_tree, dle)) {
1384		if (dump_opt['d'] >= 5) {
1385			char buf[128];
1386			(void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1387			    (longlong_t)dle->dle_mintxg,
1388			    (longlong_t)dle->dle_bpobj.bpo_object);
1389
1390			dump_bpobj(&dle->dle_bpobj, buf, 0);
1391		} else {
1392			(void) printf("mintxg %llu -> obj %llu\n",
1393			    (longlong_t)dle->dle_mintxg,
1394			    (longlong_t)dle->dle_bpobj.bpo_object);
1395
1396		}
1397	}
1398}
1399
1400static avl_tree_t idx_tree;
1401static avl_tree_t domain_tree;
1402static boolean_t fuid_table_loaded;
1403static boolean_t sa_loaded;
1404sa_attr_type_t *sa_attr_table;
1405
1406static void
1407fuid_table_destroy()
1408{
1409	if (fuid_table_loaded) {
1410		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1411		fuid_table_loaded = B_FALSE;
1412	}
1413}
1414
1415/*
1416 * print uid or gid information.
1417 * For normal POSIX id just the id is printed in decimal format.
1418 * For CIFS files with FUID the fuid is printed in hex followed by
1419 * the domain-rid string.
1420 */
1421static void
1422print_idstr(uint64_t id, const char *id_type)
1423{
1424	if (FUID_INDEX(id)) {
1425		char *domain;
1426
1427		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1428		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
1429		    (u_longlong_t)id, domain, (int)FUID_RID(id));
1430	} else {
1431		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1432	}
1433
1434}
1435
1436static void
1437dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1438{
1439	uint32_t uid_idx, gid_idx;
1440
1441	uid_idx = FUID_INDEX(uid);
1442	gid_idx = FUID_INDEX(gid);
1443
1444	/* Load domain table, if not already loaded */
1445	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1446		uint64_t fuid_obj;
1447
1448		/* first find the fuid object.  It lives in the master node */
1449		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1450		    8, 1, &fuid_obj) == 0);
1451		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1452		(void) zfs_fuid_table_load(os, fuid_obj,
1453		    &idx_tree, &domain_tree);
1454		fuid_table_loaded = B_TRUE;
1455	}
1456
1457	print_idstr(uid, "uid");
1458	print_idstr(gid, "gid");
1459}
1460
1461/*ARGSUSED*/
1462static void
1463dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1464{
1465	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
1466	sa_handle_t *hdl;
1467	uint64_t xattr, rdev, gen;
1468	uint64_t uid, gid, mode, fsize, parent, links;
1469	uint64_t pflags;
1470	uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1471	time_t z_crtime, z_atime, z_mtime, z_ctime;
1472	sa_bulk_attr_t bulk[12];
1473	int idx = 0;
1474	int error;
1475
1476	if (!sa_loaded) {
1477		uint64_t sa_attrs = 0;
1478		uint64_t version;
1479
1480		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1481		    8, 1, &version) == 0);
1482		if (version >= ZPL_VERSION_SA) {
1483			VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1484			    8, 1, &sa_attrs) == 0);
1485		}
1486		if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1487		    ZPL_END, &sa_attr_table)) != 0) {
1488			(void) printf("sa_setup failed errno %d, can't "
1489			    "display znode contents\n", error);
1490			return;
1491		}
1492		sa_loaded = B_TRUE;
1493	}
1494
1495	if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1496		(void) printf("Failed to get handle for SA znode\n");
1497		return;
1498	}
1499
1500	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1501	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1502	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1503	    &links, 8);
1504	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1505	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1506	    &mode, 8);
1507	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1508	    NULL, &parent, 8);
1509	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1510	    &fsize, 8);
1511	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1512	    acctm, 16);
1513	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1514	    modtm, 16);
1515	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1516	    crtm, 16);
1517	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1518	    chgtm, 16);
1519	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1520	    &pflags, 8);
1521
1522	if (sa_bulk_lookup(hdl, bulk, idx)) {
1523		(void) sa_handle_destroy(hdl);
1524		return;
1525	}
1526
1527	error = zfs_obj_to_path(os, object, path, sizeof (path));
1528	if (error != 0) {
1529		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1530		    (u_longlong_t)object);
1531	}
1532	if (dump_opt['d'] < 3) {
1533		(void) printf("\t%s\n", path);
1534		(void) sa_handle_destroy(hdl);
1535		return;
1536	}
1537
1538	z_crtime = (time_t)crtm[0];
1539	z_atime = (time_t)acctm[0];
1540	z_mtime = (time_t)modtm[0];
1541	z_ctime = (time_t)chgtm[0];
1542
1543	(void) printf("\tpath	%s\n", path);
1544	dump_uidgid(os, uid, gid);
1545	(void) printf("\tatime	%s", ctime(&z_atime));
1546	(void) printf("\tmtime	%s", ctime(&z_mtime));
1547	(void) printf("\tctime	%s", ctime(&z_ctime));
1548	(void) printf("\tcrtime	%s", ctime(&z_crtime));
1549	(void) printf("\tgen	%llu\n", (u_longlong_t)gen);
1550	(void) printf("\tmode	%llo\n", (u_longlong_t)mode);
1551	(void) printf("\tsize	%llu\n", (u_longlong_t)fsize);
1552	(void) printf("\tparent	%llu\n", (u_longlong_t)parent);
1553	(void) printf("\tlinks	%llu\n", (u_longlong_t)links);
1554	(void) printf("\tpflags	%llx\n", (u_longlong_t)pflags);
1555	if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1556	    sizeof (uint64_t)) == 0)
1557		(void) printf("\txattr	%llu\n", (u_longlong_t)xattr);
1558	if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1559	    sizeof (uint64_t)) == 0)
1560		(void) printf("\trdev	0x%016llx\n", (u_longlong_t)rdev);
1561	sa_handle_destroy(hdl);
1562}
1563
1564/*ARGSUSED*/
1565static void
1566dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1567{
1568}
1569
1570/*ARGSUSED*/
1571static void
1572dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1573{
1574}
1575
1576static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1577	dump_none,		/* unallocated			*/
1578	dump_zap,		/* object directory		*/
1579	dump_uint64,		/* object array			*/
1580	dump_none,		/* packed nvlist		*/
1581	dump_packed_nvlist,	/* packed nvlist size		*/
1582	dump_none,		/* bplist			*/
1583	dump_none,		/* bplist header		*/
1584	dump_none,		/* SPA space map header		*/
1585	dump_none,		/* SPA space map		*/
1586	dump_none,		/* ZIL intent log		*/
1587	dump_dnode,		/* DMU dnode			*/
1588	dump_dmu_objset,	/* DMU objset			*/
1589	dump_dsl_dir,		/* DSL directory		*/
1590	dump_zap,		/* DSL directory child map	*/
1591	dump_zap,		/* DSL dataset snap map		*/
1592	dump_zap,		/* DSL props			*/
1593	dump_dsl_dataset,	/* DSL dataset			*/
1594	dump_znode,		/* ZFS znode			*/
1595	dump_acl,		/* ZFS V0 ACL			*/
1596	dump_uint8,		/* ZFS plain file		*/
1597	dump_zpldir,		/* ZFS directory		*/
1598	dump_zap,		/* ZFS master node		*/
1599	dump_zap,		/* ZFS delete queue		*/
1600	dump_uint8,		/* zvol object			*/
1601	dump_zap,		/* zvol prop			*/
1602	dump_uint8,		/* other uint8[]		*/
1603	dump_uint64,		/* other uint64[]		*/
1604	dump_zap,		/* other ZAP			*/
1605	dump_zap,		/* persistent error log		*/
1606	dump_uint8,		/* SPA history			*/
1607	dump_history_offsets,	/* SPA history offsets		*/
1608	dump_zap,		/* Pool properties		*/
1609	dump_zap,		/* DSL permissions		*/
1610	dump_acl,		/* ZFS ACL			*/
1611	dump_uint8,		/* ZFS SYSACL			*/
1612	dump_none,		/* FUID nvlist			*/
1613	dump_packed_nvlist,	/* FUID nvlist size		*/
1614	dump_zap,		/* DSL dataset next clones	*/
1615	dump_zap,		/* DSL scrub queue		*/
1616	dump_zap,		/* ZFS user/group used		*/
1617	dump_zap,		/* ZFS user/group quota		*/
1618	dump_zap,		/* snapshot refcount tags	*/
1619	dump_ddt_zap,		/* DDT ZAP object		*/
1620	dump_zap,		/* DDT statistics		*/
1621	dump_znode,		/* SA object			*/
1622	dump_zap,		/* SA Master Node		*/
1623	dump_sa_attrs,		/* SA attribute registration	*/
1624	dump_sa_layouts,	/* SA attribute layouts		*/
1625	dump_zap,		/* DSL scrub translations	*/
1626	dump_none,		/* fake dedup BP		*/
1627	dump_zap,		/* deadlist			*/
1628	dump_none,		/* deadlist hdr			*/
1629	dump_zap,		/* dsl clones			*/
1630	dump_none,		/* bpobj subobjs		*/
1631	dump_unknown,		/* Unknown type, must be last	*/
1632};
1633
1634static void
1635dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1636{
1637	dmu_buf_t *db = NULL;
1638	dmu_object_info_t doi;
1639	dnode_t *dn;
1640	void *bonus = NULL;
1641	size_t bsize = 0;
1642	char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1643	char bonus_size[32];
1644	char aux[50];
1645	int error;
1646
1647	if (*print_header) {
1648		(void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1649		    "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1650		    "%full", "type");
1651		*print_header = 0;
1652	}
1653
1654	if (object == 0) {
1655		dn = DMU_META_DNODE(os);
1656	} else {
1657		error = dmu_bonus_hold(os, object, FTAG, &db);
1658		if (error)
1659			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1660			    object, error);
1661		bonus = db->db_data;
1662		bsize = db->db_size;
1663		dn = DB_DNODE((dmu_buf_impl_t *)db);
1664	}
1665	dmu_object_info_from_dnode(dn, &doi);
1666
1667	zdb_nicenum(doi.doi_metadata_block_size, iblk);
1668	zdb_nicenum(doi.doi_data_block_size, dblk);
1669	zdb_nicenum(doi.doi_max_offset, lsize);
1670	zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1671	zdb_nicenum(doi.doi_bonus_size, bonus_size);
1672	(void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1673	    doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1674	    doi.doi_max_offset);
1675
1676	aux[0] = '\0';
1677
1678	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1679		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1680		    ZDB_CHECKSUM_NAME(doi.doi_checksum));
1681	}
1682
1683	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1684		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1685		    ZDB_COMPRESS_NAME(doi.doi_compress));
1686	}
1687
1688	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1689	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1690	    asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1691
1692	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1693		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1694		    "", "", "", "", "", bonus_size, "bonus",
1695		    ZDB_OT_NAME(doi.doi_bonus_type));
1696	}
1697
1698	if (verbosity >= 4) {
1699		(void) printf("\tdnode flags: %s%s%s\n",
1700		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1701		    "USED_BYTES " : "",
1702		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1703		    "USERUSED_ACCOUNTED " : "",
1704		    (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1705		    "SPILL_BLKPTR" : "");
1706		(void) printf("\tdnode maxblkid: %llu\n",
1707		    (longlong_t)dn->dn_phys->dn_maxblkid);
1708
1709		object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1710		    bonus, bsize);
1711		object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1712		*print_header = 1;
1713	}
1714
1715	if (verbosity >= 5)
1716		dump_indirect(dn);
1717
1718	if (verbosity >= 5) {
1719		/*
1720		 * Report the list of segments that comprise the object.
1721		 */
1722		uint64_t start = 0;
1723		uint64_t end;
1724		uint64_t blkfill = 1;
1725		int minlvl = 1;
1726
1727		if (dn->dn_type == DMU_OT_DNODE) {
1728			minlvl = 0;
1729			blkfill = DNODES_PER_BLOCK;
1730		}
1731
1732		for (;;) {
1733			char segsize[32];
1734			error = dnode_next_offset(dn,
1735			    0, &start, minlvl, blkfill, 0);
1736			if (error)
1737				break;
1738			end = start;
1739			error = dnode_next_offset(dn,
1740			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1741			zdb_nicenum(end - start, segsize);
1742			(void) printf("\t\tsegment [%016llx, %016llx)"
1743			    " size %5s\n", (u_longlong_t)start,
1744			    (u_longlong_t)end, segsize);
1745			if (error)
1746				break;
1747			start = end;
1748		}
1749	}
1750
1751	if (db != NULL)
1752		dmu_buf_rele(db, FTAG);
1753}
1754
1755static char *objset_types[DMU_OST_NUMTYPES] = {
1756	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1757
1758static void
1759dump_dir(objset_t *os)
1760{
1761	dmu_objset_stats_t dds;
1762	uint64_t object, object_count;
1763	uint64_t refdbytes, usedobjs, scratch;
1764	char numbuf[32];
1765	char blkbuf[BP_SPRINTF_LEN + 20];
1766	char osname[MAXNAMELEN];
1767	char *type = "UNKNOWN";
1768	int verbosity = dump_opt['d'];
1769	int print_header = 1;
1770	int i, error;
1771
1772	dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1773	dmu_objset_fast_stat(os, &dds);
1774	dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1775
1776	if (dds.dds_type < DMU_OST_NUMTYPES)
1777		type = objset_types[dds.dds_type];
1778
1779	if (dds.dds_type == DMU_OST_META) {
1780		dds.dds_creation_txg = TXG_INITIAL;
1781		usedobjs = os->os_rootbp->blk_fill;
1782		refdbytes = os->os_spa->spa_dsl_pool->
1783		    dp_mos_dir->dd_phys->dd_used_bytes;
1784	} else {
1785		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1786	}
1787
1788	ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1789
1790	zdb_nicenum(refdbytes, numbuf);
1791
1792	if (verbosity >= 4) {
1793		(void) sprintf(blkbuf, ", rootbp ");
1794		(void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1795	} else {
1796		blkbuf[0] = '\0';
1797	}
1798
1799	dmu_objset_name(os, osname);
1800
1801	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1802	    "%s, %llu objects%s\n",
1803	    osname, type, (u_longlong_t)dmu_objset_id(os),
1804	    (u_longlong_t)dds.dds_creation_txg,
1805	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1806
1807	if (zopt_objects != 0) {
1808		for (i = 0; i < zopt_objects; i++)
1809			dump_object(os, zopt_object[i], verbosity,
1810			    &print_header);
1811		(void) printf("\n");
1812		return;
1813	}
1814
1815	if (dump_opt['i'] != 0 || verbosity >= 2)
1816		dump_intent_log(dmu_objset_zil(os));
1817
1818	if (dmu_objset_ds(os) != NULL)
1819		dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1820
1821	if (verbosity < 2)
1822		return;
1823
1824	if (os->os_rootbp->blk_birth == 0)
1825		return;
1826
1827	dump_object(os, 0, verbosity, &print_header);
1828	object_count = 0;
1829	if (DMU_USERUSED_DNODE(os) != NULL &&
1830	    DMU_USERUSED_DNODE(os)->dn_type != 0) {
1831		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1832		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1833	}
1834
1835	object = 0;
1836	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1837		dump_object(os, object, verbosity, &print_header);
1838		object_count++;
1839	}
1840
1841	ASSERT3U(object_count, ==, usedobjs);
1842
1843	(void) printf("\n");
1844
1845	if (error != ESRCH) {
1846		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1847		abort();
1848	}
1849}
1850
1851static void
1852dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1853{
1854	time_t timestamp = ub->ub_timestamp;
1855
1856	(void) printf(header ? header : "");
1857	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1858	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1859	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1860	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1861	(void) printf("\ttimestamp = %llu UTC = %s",
1862	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1863	if (dump_opt['u'] >= 3) {
1864		char blkbuf[BP_SPRINTF_LEN];
1865		sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1866		(void) printf("\trootbp = %s\n", blkbuf);
1867	}
1868	(void) printf(footer ? footer : "");
1869}
1870
1871static void
1872dump_config(spa_t *spa)
1873{
1874	dmu_buf_t *db;
1875	size_t nvsize = 0;
1876	int error = 0;
1877
1878
1879	error = dmu_bonus_hold(spa->spa_meta_objset,
1880	    spa->spa_config_object, FTAG, &db);
1881
1882	if (error == 0) {
1883		nvsize = *(uint64_t *)db->db_data;
1884		dmu_buf_rele(db, FTAG);
1885
1886		(void) printf("\nMOS Configuration:\n");
1887		dump_packed_nvlist(spa->spa_meta_objset,
1888		    spa->spa_config_object, (void *)&nvsize, 1);
1889	} else {
1890		(void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1891		    (u_longlong_t)spa->spa_config_object, error);
1892	}
1893}
1894
1895static void
1896dump_cachefile(const char *cachefile)
1897{
1898	int fd;
1899	struct stat64 statbuf;
1900	char *buf;
1901	nvlist_t *config;
1902
1903	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1904		(void) printf("cannot open '%s': %s\n", cachefile,
1905		    strerror(errno));
1906		exit(1);
1907	}
1908
1909	if (fstat64(fd, &statbuf) != 0) {
1910		(void) printf("failed to stat '%s': %s\n", cachefile,
1911		    strerror(errno));
1912		exit(1);
1913	}
1914
1915	if ((buf = malloc(statbuf.st_size)) == NULL) {
1916		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1917		    (u_longlong_t)statbuf.st_size);
1918		exit(1);
1919	}
1920
1921	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1922		(void) fprintf(stderr, "failed to read %llu bytes\n",
1923		    (u_longlong_t)statbuf.st_size);
1924		exit(1);
1925	}
1926
1927	(void) close(fd);
1928
1929	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1930		(void) fprintf(stderr, "failed to unpack nvlist\n");
1931		exit(1);
1932	}
1933
1934	free(buf);
1935
1936	dump_nvlist(config, 0);
1937
1938	nvlist_free(config);
1939}
1940
1941#define	ZDB_MAX_UB_HEADER_SIZE 32
1942
1943static void
1944dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1945{
1946	vdev_t vd;
1947	vdev_t *vdp = &vd;
1948	char header[ZDB_MAX_UB_HEADER_SIZE];
1949
1950	vd.vdev_ashift = ashift;
1951	vdp->vdev_top = vdp;
1952
1953	for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1954		uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1955		uberblock_t *ub = (void *)((char *)lbl + uoff);
1956
1957		if (uberblock_verify(ub))
1958			continue;
1959		(void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1960		    "Uberblock[%d]\n", i);
1961		dump_uberblock(ub, header, "");
1962	}
1963}
1964
1965static void
1966dump_label(const char *dev)
1967{
1968	int fd;
1969	vdev_label_t label;
1970	char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1971	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1972	struct stat64 statbuf;
1973	uint64_t psize, ashift;
1974	int len = strlen(dev) + 1;
1975
1976	if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1977		len++;
1978		path = malloc(len);
1979		(void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1980	} else {
1981		path = strdup(dev);
1982	}
1983
1984	if ((fd = open64(path, O_RDONLY)) < 0) {
1985		(void) printf("cannot open '%s': %s\n", path, strerror(errno));
1986		free(path);
1987		exit(1);
1988	}
1989
1990	if (fstat64(fd, &statbuf) != 0) {
1991		(void) printf("failed to stat '%s': %s\n", path,
1992		    strerror(errno));
1993		free(path);
1994		(void) close(fd);
1995		exit(1);
1996	}
1997
1998	if (S_ISBLK(statbuf.st_mode)) {
1999		(void) printf("cannot use '%s': character device required\n",
2000		    path);
2001		free(path);
2002		(void) close(fd);
2003		exit(1);
2004	}
2005
2006	psize = statbuf.st_size;
2007	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2008
2009	for (int l = 0; l < VDEV_LABELS; l++) {
2010		nvlist_t *config = NULL;
2011
2012		(void) printf("--------------------------------------------\n");
2013		(void) printf("LABEL %d\n", l);
2014		(void) printf("--------------------------------------------\n");
2015
2016		if (pread64(fd, &label, sizeof (label),
2017		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2018			(void) printf("failed to read label %d\n", l);
2019			continue;
2020		}
2021
2022		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2023			(void) printf("failed to unpack label %d\n", l);
2024			ashift = SPA_MINBLOCKSHIFT;
2025		} else {
2026			nvlist_t *vdev_tree = NULL;
2027
2028			dump_nvlist(config, 4);
2029			if ((nvlist_lookup_nvlist(config,
2030			    ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2031			    (nvlist_lookup_uint64(vdev_tree,
2032			    ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2033				ashift = SPA_MINBLOCKSHIFT;
2034			nvlist_free(config);
2035		}
2036		if (dump_opt['u'])
2037			dump_label_uberblocks(&label, ashift);
2038	}
2039
2040	free(path);
2041	(void) close(fd);
2042}
2043
2044/*ARGSUSED*/
2045static int
2046dump_one_dir(const char *dsname, void *arg)
2047{
2048	int error;
2049	objset_t *os;
2050
2051	error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2052	if (error) {
2053		(void) printf("Could not open %s, error %d\n", dsname, error);
2054		return (0);
2055	}
2056	dump_dir(os);
2057	dmu_objset_disown(os, FTAG);
2058	fuid_table_destroy();
2059	sa_loaded = B_FALSE;
2060	return (0);
2061}
2062
2063/*
2064 * Block statistics.
2065 */
2066#define	PSIZE_HISTO_SIZE (SPA_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1)
2067typedef struct zdb_blkstats {
2068	uint64_t zb_asize;
2069	uint64_t zb_lsize;
2070	uint64_t zb_psize;
2071	uint64_t zb_count;
2072	uint64_t zb_gangs;
2073	uint64_t zb_ditto_samevdev;
2074	uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2075} zdb_blkstats_t;
2076
2077/*
2078 * Extended object types to report deferred frees and dedup auto-ditto blocks.
2079 */
2080#define	ZDB_OT_DEFERRED	(DMU_OT_NUMTYPES + 0)
2081#define	ZDB_OT_DITTO	(DMU_OT_NUMTYPES + 1)
2082#define	ZDB_OT_OTHER	(DMU_OT_NUMTYPES + 2)
2083#define	ZDB_OT_TOTAL	(DMU_OT_NUMTYPES + 3)
2084
2085static char *zdb_ot_extname[] = {
2086	"deferred free",
2087	"dedup ditto",
2088	"other",
2089	"Total",
2090};
2091
2092#define	ZB_TOTAL	DN_MAX_LEVELS
2093
2094typedef struct zdb_cb {
2095	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2096	uint64_t	zcb_dedup_asize;
2097	uint64_t	zcb_dedup_blocks;
2098	uint64_t	zcb_start;
2099	uint64_t	zcb_lastprint;
2100	uint64_t	zcb_totalasize;
2101	uint64_t	zcb_errors[256];
2102	int		zcb_readfails;
2103	int		zcb_haderrors;
2104	spa_t		*zcb_spa;
2105} zdb_cb_t;
2106
2107static void
2108zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2109    dmu_object_type_t type)
2110{
2111	uint64_t refcnt = 0;
2112
2113	ASSERT(type < ZDB_OT_TOTAL);
2114
2115	if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2116		return;
2117
2118	for (int i = 0; i < 4; i++) {
2119		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2120		int t = (i & 1) ? type : ZDB_OT_TOTAL;
2121		int equal;
2122		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2123
2124		zb->zb_asize += BP_GET_ASIZE(bp);
2125		zb->zb_lsize += BP_GET_LSIZE(bp);
2126		zb->zb_psize += BP_GET_PSIZE(bp);
2127		zb->zb_count++;
2128		zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++;
2129
2130		zb->zb_gangs += BP_COUNT_GANG(bp);
2131
2132		switch (BP_GET_NDVAS(bp)) {
2133		case 2:
2134			if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2135			    DVA_GET_VDEV(&bp->blk_dva[1]))
2136				zb->zb_ditto_samevdev++;
2137			break;
2138		case 3:
2139			equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2140			    DVA_GET_VDEV(&bp->blk_dva[1])) +
2141			    (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2142			    DVA_GET_VDEV(&bp->blk_dva[2])) +
2143			    (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2144			    DVA_GET_VDEV(&bp->blk_dva[2]));
2145			if (equal != 0)
2146				zb->zb_ditto_samevdev++;
2147			break;
2148		}
2149
2150	}
2151
2152	if (dump_opt['L'])
2153		return;
2154
2155	if (BP_GET_DEDUP(bp)) {
2156		ddt_t *ddt;
2157		ddt_entry_t *dde;
2158
2159		ddt = ddt_select(zcb->zcb_spa, bp);
2160		ddt_enter(ddt);
2161		dde = ddt_lookup(ddt, bp, B_FALSE);
2162
2163		if (dde == NULL) {
2164			refcnt = 0;
2165		} else {
2166			ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2167			ddt_phys_decref(ddp);
2168			refcnt = ddp->ddp_refcnt;
2169			if (ddt_phys_total_refcnt(dde) == 0)
2170				ddt_remove(ddt, dde);
2171		}
2172		ddt_exit(ddt);
2173	}
2174
2175	VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2176	    refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2177	    bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2178}
2179
2180static void
2181zdb_blkptr_done(zio_t *zio)
2182{
2183	spa_t *spa = zio->io_spa;
2184	blkptr_t *bp = zio->io_bp;
2185	int ioerr = zio->io_error;
2186	zdb_cb_t *zcb = zio->io_private;
2187	zbookmark_t *zb = &zio->io_bookmark;
2188
2189	zio_data_buf_free(zio->io_data, zio->io_size);
2190
2191	mutex_enter(&spa->spa_scrub_lock);
2192	spa->spa_scrub_inflight--;
2193	cv_broadcast(&spa->spa_scrub_io_cv);
2194
2195	if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2196		char blkbuf[BP_SPRINTF_LEN];
2197
2198		zcb->zcb_haderrors = 1;
2199		zcb->zcb_errors[ioerr]++;
2200
2201		if (dump_opt['b'] >= 2)
2202			sprintf_blkptr(blkbuf, bp);
2203		else
2204			blkbuf[0] = '\0';
2205
2206		(void) printf("zdb_blkptr_cb: "
2207		    "Got error %d reading "
2208		    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2209		    ioerr,
2210		    (u_longlong_t)zb->zb_objset,
2211		    (u_longlong_t)zb->zb_object,
2212		    (u_longlong_t)zb->zb_level,
2213		    (u_longlong_t)zb->zb_blkid,
2214		    blkbuf);
2215	}
2216	mutex_exit(&spa->spa_scrub_lock);
2217}
2218
2219static int
2220zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2221    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2222{
2223	zdb_cb_t *zcb = arg;
2224	char blkbuf[BP_SPRINTF_LEN];
2225	dmu_object_type_t type;
2226	boolean_t is_metadata;
2227
2228	if (bp == NULL)
2229		return (0);
2230
2231	type = BP_GET_TYPE(bp);
2232
2233	zdb_count_block(zcb, zilog, bp,
2234	    (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2235
2236	is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2237
2238	if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2239		size_t size = BP_GET_PSIZE(bp);
2240		void *data = zio_data_buf_alloc(size);
2241		int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2242
2243		/* If it's an intent log block, failure is expected. */
2244		if (zb->zb_level == ZB_ZIL_LEVEL)
2245			flags |= ZIO_FLAG_SPECULATIVE;
2246
2247		mutex_enter(&spa->spa_scrub_lock);
2248		while (spa->spa_scrub_inflight > max_inflight)
2249			cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2250		spa->spa_scrub_inflight++;
2251		mutex_exit(&spa->spa_scrub_lock);
2252
2253		zio_nowait(zio_read(NULL, spa, bp, data, size,
2254		    zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2255	}
2256
2257	zcb->zcb_readfails = 0;
2258
2259	if (dump_opt['b'] >= 5) {
2260		sprintf_blkptr(blkbuf, bp);
2261		(void) printf("objset %llu object %llu "
2262		    "level %lld offset 0x%llx %s\n",
2263		    (u_longlong_t)zb->zb_objset,
2264		    (u_longlong_t)zb->zb_object,
2265		    (longlong_t)zb->zb_level,
2266		    (u_longlong_t)blkid2offset(dnp, bp, zb),
2267		    blkbuf);
2268	}
2269
2270	if (dump_opt['b'] < 5 && isatty(STDERR_FILENO) &&
2271	    gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2272		uint64_t now = gethrtime();
2273		char buf[10];
2274		uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2275		int kb_per_sec =
2276		    1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2277		int sec_remaining =
2278		    (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2279
2280		zfs_nicenum(bytes, buf, sizeof (buf));
2281		(void) fprintf(stderr,
2282		    "\r%5s completed (%4dMB/s) "
2283		    "estimated time remaining: %uhr %02umin %02usec        ",
2284		    buf, kb_per_sec / 1024,
2285		    sec_remaining / 60 / 60,
2286		    sec_remaining / 60 % 60,
2287		    sec_remaining % 60);
2288
2289		zcb->zcb_lastprint = now;
2290	}
2291
2292	return (0);
2293}
2294
2295static void
2296zdb_leak(void *arg, uint64_t start, uint64_t size)
2297{
2298	vdev_t *vd = arg;
2299
2300	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2301	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2302}
2303
2304static metaslab_ops_t zdb_metaslab_ops = {
2305	NULL,	/* alloc */
2306	NULL	/* fragmented */
2307};
2308
2309static void
2310zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2311{
2312	ddt_bookmark_t ddb = { 0 };
2313	ddt_entry_t dde;
2314	int error;
2315
2316	while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2317		blkptr_t blk;
2318		ddt_phys_t *ddp = dde.dde_phys;
2319
2320		if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2321			return;
2322
2323		ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2324
2325		for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2326			if (ddp->ddp_phys_birth == 0)
2327				continue;
2328			ddt_bp_create(ddb.ddb_checksum,
2329			    &dde.dde_key, ddp, &blk);
2330			if (p == DDT_PHYS_DITTO) {
2331				zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2332			} else {
2333				zcb->zcb_dedup_asize +=
2334				    BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2335				zcb->zcb_dedup_blocks++;
2336			}
2337		}
2338		if (!dump_opt['L']) {
2339			ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2340			ddt_enter(ddt);
2341			VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2342			ddt_exit(ddt);
2343		}
2344	}
2345
2346	ASSERT(error == ENOENT);
2347}
2348
2349static void
2350zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2351{
2352	zcb->zcb_spa = spa;
2353
2354	if (!dump_opt['L']) {
2355		vdev_t *rvd = spa->spa_root_vdev;
2356		for (int c = 0; c < rvd->vdev_children; c++) {
2357			vdev_t *vd = rvd->vdev_child[c];
2358			for (int m = 0; m < vd->vdev_ms_count; m++) {
2359				metaslab_t *msp = vd->vdev_ms[m];
2360				mutex_enter(&msp->ms_lock);
2361				metaslab_unload(msp);
2362
2363				/*
2364				 * For leak detection, we overload the metaslab
2365				 * ms_tree to contain allocated segments
2366				 * instead of free segments. As a result,
2367				 * we can't use the normal metaslab_load/unload
2368				 * interfaces.
2369				 */
2370				if (msp->ms_sm != NULL) {
2371					msp->ms_ops = &zdb_metaslab_ops;
2372					VERIFY0(space_map_load(msp->ms_sm,
2373					    msp->ms_tree, SM_ALLOC));
2374					msp->ms_loaded = B_TRUE;
2375				}
2376				mutex_exit(&msp->ms_lock);
2377			}
2378		}
2379	}
2380
2381	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2382
2383	zdb_ddt_leak_init(spa, zcb);
2384
2385	spa_config_exit(spa, SCL_CONFIG, FTAG);
2386}
2387
2388static void
2389zdb_leak_fini(spa_t *spa)
2390{
2391	if (!dump_opt['L']) {
2392		vdev_t *rvd = spa->spa_root_vdev;
2393		for (int c = 0; c < rvd->vdev_children; c++) {
2394			vdev_t *vd = rvd->vdev_child[c];
2395			for (int m = 0; m < vd->vdev_ms_count; m++) {
2396				metaslab_t *msp = vd->vdev_ms[m];
2397				mutex_enter(&msp->ms_lock);
2398
2399				/*
2400				 * The ms_tree has been overloaded to
2401				 * contain allocated segments. Now that we
2402				 * finished traversing all blocks, any
2403				 * block that remains in the ms_tree
2404				 * represents an allocated block that we
2405				 * did not claim during the traversal.
2406				 * Claimed blocks would have been removed
2407				 * from the ms_tree.
2408				 */
2409				range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2410				msp->ms_loaded = B_FALSE;
2411
2412				mutex_exit(&msp->ms_lock);
2413			}
2414		}
2415	}
2416}
2417
2418/* ARGSUSED */
2419static int
2420count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2421{
2422	zdb_cb_t *zcb = arg;
2423
2424	if (dump_opt['b'] >= 5) {
2425		char blkbuf[BP_SPRINTF_LEN];
2426		sprintf_blkptr(blkbuf, bp);
2427		(void) printf("[%s] %s\n",
2428		    "deferred free", blkbuf);
2429	}
2430	zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2431	return (0);
2432}
2433
2434static int
2435dump_block_stats(spa_t *spa)
2436{
2437	zdb_cb_t zcb = { 0 };
2438	zdb_blkstats_t *zb, *tzb;
2439	uint64_t norm_alloc, norm_space, total_alloc, total_found;
2440	int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2441	int leaks = 0;
2442
2443	(void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2444	    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2445	    (dump_opt['c'] == 1) ? "metadata " : "",
2446	    dump_opt['c'] ? "checksums " : "",
2447	    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2448	    !dump_opt['L'] ? "nothing leaked " : "");
2449
2450	/*
2451	 * Load all space maps as SM_ALLOC maps, then traverse the pool
2452	 * claiming each block we discover.  If the pool is perfectly
2453	 * consistent, the space maps will be empty when we're done.
2454	 * Anything left over is a leak; any block we can't claim (because
2455	 * it's not part of any space map) is a double allocation,
2456	 * reference to a freed block, or an unclaimed log block.
2457	 */
2458	zdb_leak_init(spa, &zcb);
2459
2460	/*
2461	 * If there's a deferred-free bplist, process that first.
2462	 */
2463	(void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2464	    count_block_cb, &zcb, NULL);
2465	if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2466		(void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2467		    count_block_cb, &zcb, NULL);
2468	}
2469	if (spa_feature_is_active(spa,
2470	    &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2471		VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2472		    spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2473		    &zcb, NULL));
2474	}
2475
2476	if (dump_opt['c'] > 1)
2477		flags |= TRAVERSE_PREFETCH_DATA;
2478
2479	zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2480	zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2481	zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2482
2483	/*
2484	 * If we've traversed the data blocks then we need to wait for those
2485	 * I/Os to complete. We leverage "The Godfather" zio to wait on
2486	 * all async I/Os to complete.
2487	 */
2488	if (dump_opt['c']) {
2489		(void) zio_wait(spa->spa_async_zio_root);
2490		spa->spa_async_zio_root = zio_root(spa, NULL, NULL,
2491		    ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2492		    ZIO_FLAG_GODFATHER);
2493	}
2494
2495	if (zcb.zcb_haderrors) {
2496		(void) printf("\nError counts:\n\n");
2497		(void) printf("\t%5s  %s\n", "errno", "count");
2498		for (int e = 0; e < 256; e++) {
2499			if (zcb.zcb_errors[e] != 0) {
2500				(void) printf("\t%5d  %llu\n",
2501				    e, (u_longlong_t)zcb.zcb_errors[e]);
2502			}
2503		}
2504	}
2505
2506	/*
2507	 * Report any leaked segments.
2508	 */
2509	zdb_leak_fini(spa);
2510
2511	tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2512
2513	norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2514	norm_space = metaslab_class_get_space(spa_normal_class(spa));
2515
2516	total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2517	total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2518
2519	if (total_found == total_alloc) {
2520		if (!dump_opt['L'])
2521			(void) printf("\n\tNo leaks (block sum matches space"
2522			    " maps exactly)\n");
2523	} else {
2524		(void) printf("block traversal size %llu != alloc %llu "
2525		    "(%s %lld)\n",
2526		    (u_longlong_t)total_found,
2527		    (u_longlong_t)total_alloc,
2528		    (dump_opt['L']) ? "unreachable" : "leaked",
2529		    (longlong_t)(total_alloc - total_found));
2530		leaks = 1;
2531	}
2532
2533	if (tzb->zb_count == 0)
2534		return (2);
2535
2536	(void) printf("\n");
2537	(void) printf("\tbp count:      %10llu\n",
2538	    (u_longlong_t)tzb->zb_count);
2539	(void) printf("\tganged count:  %10llu\n",
2540	    (longlong_t)tzb->zb_gangs);
2541	(void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2542	    (u_longlong_t)tzb->zb_lsize,
2543	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2544	(void) printf("\tbp physical:   %10llu      avg:"
2545	    " %6llu     compression: %6.2f\n",
2546	    (u_longlong_t)tzb->zb_psize,
2547	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2548	    (double)tzb->zb_lsize / tzb->zb_psize);
2549	(void) printf("\tbp allocated:  %10llu      avg:"
2550	    " %6llu     compression: %6.2f\n",
2551	    (u_longlong_t)tzb->zb_asize,
2552	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2553	    (double)tzb->zb_lsize / tzb->zb_asize);
2554	(void) printf("\tbp deduped:    %10llu    ref>1:"
2555	    " %6llu   deduplication: %6.2f\n",
2556	    (u_longlong_t)zcb.zcb_dedup_asize,
2557	    (u_longlong_t)zcb.zcb_dedup_blocks,
2558	    (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2559	(void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2560	    (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2561
2562	if (tzb->zb_ditto_samevdev != 0) {
2563		(void) printf("\tDittoed blocks on same vdev: %llu\n",
2564		    (longlong_t)tzb->zb_ditto_samevdev);
2565	}
2566
2567	if (dump_opt['b'] >= 2) {
2568		int l, t, level;
2569		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2570		    "\t  avg\t comp\t%%Total\tType\n");
2571
2572		for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2573			char csize[32], lsize[32], psize[32], asize[32];
2574			char avg[32], gang[32];
2575			char *typename;
2576
2577			if (t < DMU_OT_NUMTYPES)
2578				typename = dmu_ot[t].ot_name;
2579			else
2580				typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2581
2582			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2583				(void) printf("%6s\t%5s\t%5s\t%5s"
2584				    "\t%5s\t%5s\t%6s\t%s\n",
2585				    "-",
2586				    "-",
2587				    "-",
2588				    "-",
2589				    "-",
2590				    "-",
2591				    "-",
2592				    typename);
2593				continue;
2594			}
2595
2596			for (l = ZB_TOTAL - 1; l >= -1; l--) {
2597				level = (l == -1 ? ZB_TOTAL : l);
2598				zb = &zcb.zcb_type[level][t];
2599
2600				if (zb->zb_asize == 0)
2601					continue;
2602
2603				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2604					continue;
2605
2606				if (level == 0 && zb->zb_asize ==
2607				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2608					continue;
2609
2610				zdb_nicenum(zb->zb_count, csize);
2611				zdb_nicenum(zb->zb_lsize, lsize);
2612				zdb_nicenum(zb->zb_psize, psize);
2613				zdb_nicenum(zb->zb_asize, asize);
2614				zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2615				zdb_nicenum(zb->zb_gangs, gang);
2616
2617				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2618				    "\t%5.2f\t%6.2f\t",
2619				    csize, lsize, psize, asize, avg,
2620				    (double)zb->zb_lsize / zb->zb_psize,
2621				    100.0 * zb->zb_asize / tzb->zb_asize);
2622
2623				if (level == ZB_TOTAL)
2624					(void) printf("%s\n", typename);
2625				else
2626					(void) printf("    L%d %s\n",
2627					    level, typename);
2628
2629				if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2630					(void) printf("\t number of ganged "
2631					    "blocks: %s\n", gang);
2632				}
2633
2634				if (dump_opt['b'] >= 4) {
2635					(void) printf("psize "
2636					    "(in 512-byte sectors): "
2637					    "number of blocks\n");
2638					dump_histogram(zb->zb_psize_histogram,
2639					    PSIZE_HISTO_SIZE, 0);
2640				}
2641			}
2642		}
2643	}
2644
2645	(void) printf("\n");
2646
2647	if (leaks)
2648		return (2);
2649
2650	if (zcb.zcb_haderrors)
2651		return (3);
2652
2653	return (0);
2654}
2655
2656typedef struct zdb_ddt_entry {
2657	ddt_key_t	zdde_key;
2658	uint64_t	zdde_ref_blocks;
2659	uint64_t	zdde_ref_lsize;
2660	uint64_t	zdde_ref_psize;
2661	uint64_t	zdde_ref_dsize;
2662	avl_node_t	zdde_node;
2663} zdb_ddt_entry_t;
2664
2665/* ARGSUSED */
2666static int
2667zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2668    const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2669{
2670	avl_tree_t *t = arg;
2671	avl_index_t where;
2672	zdb_ddt_entry_t *zdde, zdde_search;
2673
2674	if (bp == NULL)
2675		return (0);
2676
2677	if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2678		(void) printf("traversing objset %llu, %llu objects, "
2679		    "%lu blocks so far\n",
2680		    (u_longlong_t)zb->zb_objset,
2681		    (u_longlong_t)bp->blk_fill,
2682		    avl_numnodes(t));
2683	}
2684
2685	if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2686	    BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2687		return (0);
2688
2689	ddt_key_fill(&zdde_search.zdde_key, bp);
2690
2691	zdde = avl_find(t, &zdde_search, &where);
2692
2693	if (zdde == NULL) {
2694		zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2695		zdde->zdde_key = zdde_search.zdde_key;
2696		avl_insert(t, zdde, where);
2697	}
2698
2699	zdde->zdde_ref_blocks += 1;
2700	zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2701	zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2702	zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2703
2704	return (0);
2705}
2706
2707static void
2708dump_simulated_ddt(spa_t *spa)
2709{
2710	avl_tree_t t;
2711	void *cookie = NULL;
2712	zdb_ddt_entry_t *zdde;
2713	ddt_histogram_t ddh_total = { 0 };
2714	ddt_stat_t dds_total = { 0 };
2715
2716	avl_create(&t, ddt_entry_compare,
2717	    sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2718
2719	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2720
2721	(void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2722	    zdb_ddt_add_cb, &t);
2723
2724	spa_config_exit(spa, SCL_CONFIG, FTAG);
2725
2726	while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2727		ddt_stat_t dds;
2728		uint64_t refcnt = zdde->zdde_ref_blocks;
2729		ASSERT(refcnt != 0);
2730
2731		dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2732		dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2733		dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2734		dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2735
2736		dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2737		dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2738		dds.dds_ref_psize = zdde->zdde_ref_psize;
2739		dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2740
2741		ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2742
2743		umem_free(zdde, sizeof (*zdde));
2744	}
2745
2746	avl_destroy(&t);
2747
2748	ddt_histogram_stat(&dds_total, &ddh_total);
2749
2750	(void) printf("Simulated DDT histogram:\n");
2751
2752	zpool_dump_ddt(&dds_total, &ddh_total);
2753
2754	dump_dedup_ratio(&dds_total);
2755}
2756
2757static void
2758dump_zpool(spa_t *spa)
2759{
2760	dsl_pool_t *dp = spa_get_dsl(spa);
2761	int rc = 0;
2762
2763	if (dump_opt['S']) {
2764		dump_simulated_ddt(spa);
2765		return;
2766	}
2767
2768	if (!dump_opt['e'] && dump_opt['C'] > 1) {
2769		(void) printf("\nCached configuration:\n");
2770		dump_nvlist(spa->spa_config, 8);
2771	}
2772
2773	if (dump_opt['C'])
2774		dump_config(spa);
2775
2776	if (dump_opt['u'])
2777		dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2778
2779	if (dump_opt['D'])
2780		dump_all_ddts(spa);
2781
2782	if (dump_opt['d'] > 2 || dump_opt['m'])
2783		dump_metaslabs(spa);
2784
2785	if (dump_opt['d'] || dump_opt['i']) {
2786		dump_dir(dp->dp_meta_objset);
2787		if (dump_opt['d'] >= 3) {
2788			dump_bpobj(&spa->spa_deferred_bpobj,
2789			    "Deferred frees", 0);
2790			if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2791				dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2792				    "Pool snapshot frees", 0);
2793			}
2794
2795			if (spa_feature_is_active(spa,
2796			    &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2797				dump_bptree(spa->spa_meta_objset,
2798				    spa->spa_dsl_pool->dp_bptree_obj,
2799				    "Pool dataset frees");
2800			}
2801			dump_dtl(spa->spa_root_vdev, 0);
2802		}
2803		(void) dmu_objset_find(spa_name(spa), dump_one_dir,
2804		    NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2805	}
2806	if (dump_opt['b'] || dump_opt['c'])
2807		rc = dump_block_stats(spa);
2808
2809	if (rc == 0)
2810		rc = verify_spacemap_refcounts(spa);
2811
2812	if (dump_opt['s'])
2813		show_pool_stats(spa);
2814
2815	if (dump_opt['h'])
2816		dump_history(spa);
2817
2818	if (rc != 0)
2819		exit(rc);
2820}
2821
2822#define	ZDB_FLAG_CHECKSUM	0x0001
2823#define	ZDB_FLAG_DECOMPRESS	0x0002
2824#define	ZDB_FLAG_BSWAP		0x0004
2825#define	ZDB_FLAG_GBH		0x0008
2826#define	ZDB_FLAG_INDIRECT	0x0010
2827#define	ZDB_FLAG_PHYS		0x0020
2828#define	ZDB_FLAG_RAW		0x0040
2829#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
2830
2831int flagbits[256];
2832
2833static void
2834zdb_print_blkptr(blkptr_t *bp, int flags)
2835{
2836	char blkbuf[BP_SPRINTF_LEN];
2837
2838	if (flags & ZDB_FLAG_BSWAP)
2839		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2840
2841	sprintf_blkptr(blkbuf, bp);
2842	(void) printf("%s\n", blkbuf);
2843}
2844
2845static void
2846zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2847{
2848	int i;
2849
2850	for (i = 0; i < nbps; i++)
2851		zdb_print_blkptr(&bp[i], flags);
2852}
2853
2854static void
2855zdb_dump_gbh(void *buf, int flags)
2856{
2857	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2858}
2859
2860static void
2861zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2862{
2863	if (flags & ZDB_FLAG_BSWAP)
2864		byteswap_uint64_array(buf, size);
2865	(void) write(1, buf, size);
2866}
2867
2868static void
2869zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2870{
2871	uint64_t *d = (uint64_t *)buf;
2872	int nwords = size / sizeof (uint64_t);
2873	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2874	int i, j;
2875	char *hdr, *c;
2876
2877
2878	if (do_bswap)
2879		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2880	else
2881		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2882
2883	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2884
2885	for (i = 0; i < nwords; i += 2) {
2886		(void) printf("%06llx:  %016llx  %016llx  ",
2887		    (u_longlong_t)(i * sizeof (uint64_t)),
2888		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2889		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2890
2891		c = (char *)&d[i];
2892		for (j = 0; j < 2 * sizeof (uint64_t); j++)
2893			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
2894		(void) printf("\n");
2895	}
2896}
2897
2898/*
2899 * There are two acceptable formats:
2900 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
2901 *	child[.child]*    - For example: 0.1.1
2902 *
2903 * The second form can be used to specify arbitrary vdevs anywhere
2904 * in the heirarchy.  For example, in a pool with a mirror of
2905 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2906 */
2907static vdev_t *
2908zdb_vdev_lookup(vdev_t *vdev, char *path)
2909{
2910	char *s, *p, *q;
2911	int i;
2912
2913	if (vdev == NULL)
2914		return (NULL);
2915
2916	/* First, assume the x.x.x.x format */
2917	i = (int)strtoul(path, &s, 10);
2918	if (s == path || (s && *s != '.' && *s != '\0'))
2919		goto name;
2920	if (i < 0 || i >= vdev->vdev_children)
2921		return (NULL);
2922
2923	vdev = vdev->vdev_child[i];
2924	if (*s == '\0')
2925		return (vdev);
2926	return (zdb_vdev_lookup(vdev, s+1));
2927
2928name:
2929	for (i = 0; i < vdev->vdev_children; i++) {
2930		vdev_t *vc = vdev->vdev_child[i];
2931
2932		if (vc->vdev_path == NULL) {
2933			vc = zdb_vdev_lookup(vc, path);
2934			if (vc == NULL)
2935				continue;
2936			else
2937				return (vc);
2938		}
2939
2940		p = strrchr(vc->vdev_path, '/');
2941		p = p ? p + 1 : vc->vdev_path;
2942		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2943
2944		if (strcmp(vc->vdev_path, path) == 0)
2945			return (vc);
2946		if (strcmp(p, path) == 0)
2947			return (vc);
2948		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2949			return (vc);
2950	}
2951
2952	return (NULL);
2953}
2954
2955/*
2956 * Read a block from a pool and print it out.  The syntax of the
2957 * block descriptor is:
2958 *
2959 *	pool:vdev_specifier:offset:size[:flags]
2960 *
2961 *	pool           - The name of the pool you wish to read from
2962 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2963 *	offset         - offset, in hex, in bytes
2964 *	size           - Amount of data to read, in hex, in bytes
2965 *	flags          - A string of characters specifying options
2966 *		 b: Decode a blkptr at given offset within block
2967 *		*c: Calculate and display checksums
2968 *		 d: Decompress data before dumping
2969 *		 e: Byteswap data before dumping
2970 *		 g: Display data as a gang block header
2971 *		 i: Display as an indirect block
2972 *		 p: Do I/O to physical offset
2973 *		 r: Dump raw data to stdout
2974 *
2975 *              * = not yet implemented
2976 */
2977static void
2978zdb_read_block(char *thing, spa_t *spa)
2979{
2980	blkptr_t blk, *bp = &blk;
2981	dva_t *dva = bp->blk_dva;
2982	int flags = 0;
2983	uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2984	zio_t *zio;
2985	vdev_t *vd;
2986	void *pbuf, *lbuf, *buf;
2987	char *s, *p, *dup, *vdev, *flagstr;
2988	int i, error;
2989
2990	dup = strdup(thing);
2991	s = strtok(dup, ":");
2992	vdev = s ? s : "";
2993	s = strtok(NULL, ":");
2994	offset = strtoull(s ? s : "", NULL, 16);
2995	s = strtok(NULL, ":");
2996	size = strtoull(s ? s : "", NULL, 16);
2997	s = strtok(NULL, ":");
2998	flagstr = s ? s : "";
2999
3000	s = NULL;
3001	if (size == 0)
3002		s = "size must not be zero";
3003	if (!IS_P2ALIGNED(size, DEV_BSIZE))
3004		s = "size must be a multiple of sector size";
3005	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3006		s = "offset must be a multiple of sector size";
3007	if (s) {
3008		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3009		free(dup);
3010		return;
3011	}
3012
3013	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3014		for (i = 0; flagstr[i]; i++) {
3015			int bit = flagbits[(uchar_t)flagstr[i]];
3016
3017			if (bit == 0) {
3018				(void) printf("***Invalid flag: %c\n",
3019				    flagstr[i]);
3020				continue;
3021			}
3022			flags |= bit;
3023
3024			/* If it's not something with an argument, keep going */
3025			if ((bit & (ZDB_FLAG_CHECKSUM |
3026			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
3027				continue;
3028
3029			p = &flagstr[i + 1];
3030			if (bit == ZDB_FLAG_PRINT_BLKPTR)
3031				blkptr_offset = strtoull(p, &p, 16);
3032			if (*p != ':' && *p != '\0') {
3033				(void) printf("***Invalid flag arg: '%s'\n", s);
3034				free(dup);
3035				return;
3036			}
3037		}
3038	}
3039
3040	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3041	if (vd == NULL) {
3042		(void) printf("***Invalid vdev: %s\n", vdev);
3043		free(dup);
3044		return;
3045	} else {
3046		if (vd->vdev_path)
3047			(void) fprintf(stderr, "Found vdev: %s\n",
3048			    vd->vdev_path);
3049		else
3050			(void) fprintf(stderr, "Found vdev type: %s\n",
3051			    vd->vdev_ops->vdev_op_type);
3052	}
3053
3054	psize = size;
3055	lsize = size;
3056
3057	pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3058	lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3059
3060	BP_ZERO(bp);
3061
3062	DVA_SET_VDEV(&dva[0], vd->vdev_id);
3063	DVA_SET_OFFSET(&dva[0], offset);
3064	DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3065	DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3066
3067	BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3068
3069	BP_SET_LSIZE(bp, lsize);
3070	BP_SET_PSIZE(bp, psize);
3071	BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3072	BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3073	BP_SET_TYPE(bp, DMU_OT_NONE);
3074	BP_SET_LEVEL(bp, 0);
3075	BP_SET_DEDUP(bp, 0);
3076	BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3077
3078	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3079	zio = zio_root(spa, NULL, NULL, 0);
3080
3081	if (vd == vd->vdev_top) {
3082		/*
3083		 * Treat this as a normal block read.
3084		 */
3085		zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3086		    ZIO_PRIORITY_SYNC_READ,
3087		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3088	} else {
3089		/*
3090		 * Treat this as a vdev child I/O.
3091		 */
3092		zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3093		    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3094		    ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3095		    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3096		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3097	}
3098
3099	error = zio_wait(zio);
3100	spa_config_exit(spa, SCL_STATE, FTAG);
3101
3102	if (error) {
3103		(void) printf("Read of %s failed, error: %d\n", thing, error);
3104		goto out;
3105	}
3106
3107	if (flags & ZDB_FLAG_DECOMPRESS) {
3108		/*
3109		 * We don't know how the data was compressed, so just try
3110		 * every decompress function at every inflated blocksize.
3111		 */
3112		enum zio_compress c;
3113		void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3114		void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3115
3116		bcopy(pbuf, pbuf2, psize);
3117
3118		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3119		    SPA_MAXBLOCKSIZE - psize) == 0);
3120
3121		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3122		    SPA_MAXBLOCKSIZE - psize) == 0);
3123
3124		for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3125		    lsize -= SPA_MINBLOCKSIZE) {
3126			for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3127				if (zio_decompress_data(c, pbuf, lbuf,
3128				    psize, lsize) == 0 &&
3129				    zio_decompress_data(c, pbuf2, lbuf2,
3130				    psize, lsize) == 0 &&
3131				    bcmp(lbuf, lbuf2, lsize) == 0)
3132					break;
3133			}
3134			if (c != ZIO_COMPRESS_FUNCTIONS)
3135				break;
3136			lsize -= SPA_MINBLOCKSIZE;
3137		}
3138
3139		umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3140		umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3141
3142		if (lsize <= psize) {
3143			(void) printf("Decompress of %s failed\n", thing);
3144			goto out;
3145		}
3146		buf = lbuf;
3147		size = lsize;
3148	} else {
3149		buf = pbuf;
3150		size = psize;
3151	}
3152
3153	if (flags & ZDB_FLAG_PRINT_BLKPTR)
3154		zdb_print_blkptr((blkptr_t *)(void *)
3155		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3156	else if (flags & ZDB_FLAG_RAW)
3157		zdb_dump_block_raw(buf, size, flags);
3158	else if (flags & ZDB_FLAG_INDIRECT)
3159		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3160		    flags);
3161	else if (flags & ZDB_FLAG_GBH)
3162		zdb_dump_gbh(buf, flags);
3163	else
3164		zdb_dump_block(thing, buf, size, flags);
3165
3166out:
3167	umem_free(pbuf, SPA_MAXBLOCKSIZE);
3168	umem_free(lbuf, SPA_MAXBLOCKSIZE);
3169	free(dup);
3170}
3171
3172static boolean_t
3173pool_match(nvlist_t *cfg, char *tgt)
3174{
3175	uint64_t v, guid = strtoull(tgt, NULL, 0);
3176	char *s;
3177
3178	if (guid != 0) {
3179		if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3180			return (v == guid);
3181	} else {
3182		if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3183			return (strcmp(s, tgt) == 0);
3184	}
3185	return (B_FALSE);
3186}
3187
3188static char *
3189find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3190{
3191	nvlist_t *pools;
3192	nvlist_t *match = NULL;
3193	char *name = NULL;
3194	char *sepp = NULL;
3195	char sep;
3196	int count = 0;
3197	importargs_t args = { 0 };
3198
3199	args.paths = dirc;
3200	args.path = dirv;
3201	args.can_be_active = B_TRUE;
3202
3203	if ((sepp = strpbrk(*target, "/@")) != NULL) {
3204		sep = *sepp;
3205		*sepp = '\0';
3206	}
3207
3208	pools = zpool_search_import(g_zfs, &args);
3209
3210	if (pools != NULL) {
3211		nvpair_t *elem = NULL;
3212		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3213			verify(nvpair_value_nvlist(elem, configp) == 0);
3214			if (pool_match(*configp, *target)) {
3215				count++;
3216				if (match != NULL) {
3217					/* print previously found config */
3218					if (name != NULL) {
3219						(void) printf("%s\n", name);
3220						dump_nvlist(match, 8);
3221						name = NULL;
3222					}
3223					(void) printf("%s\n",
3224					    nvpair_name(elem));
3225					dump_nvlist(*configp, 8);
3226				} else {
3227					match = *configp;
3228					name = nvpair_name(elem);
3229				}
3230			}
3231		}
3232	}
3233	if (count > 1)
3234		(void) fatal("\tMatched %d pools - use pool GUID "
3235		    "instead of pool name or \n"
3236		    "\tpool name part of a dataset name to select pool", count);
3237
3238	if (sepp)
3239		*sepp = sep;
3240	/*
3241	 * If pool GUID was specified for pool id, replace it with pool name
3242	 */
3243	if (name && (strstr(*target, name) != *target)) {
3244		int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3245
3246		*target = umem_alloc(sz, UMEM_NOFAIL);
3247		(void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3248	}
3249
3250	*configp = name ? match : NULL;
3251
3252	return (name);
3253}
3254
3255int
3256main(int argc, char **argv)
3257{
3258	int i, c;
3259	struct rlimit rl = { 1024, 1024 };
3260	spa_t *spa = NULL;
3261	objset_t *os = NULL;
3262	int dump_all = 1;
3263	int verbose = 0;
3264	int error = 0;
3265	char **searchdirs = NULL;
3266	int nsearch = 0;
3267	char *target;
3268	nvlist_t *policy = NULL;
3269	uint64_t max_txg = UINT64_MAX;
3270	int rewind = ZPOOL_NEVER_REWIND;
3271
3272	(void) setrlimit(RLIMIT_NOFILE, &rl);
3273	(void) enable_extended_FILE_stdio(-1, -1);
3274
3275	dprintf_setup(&argc, argv);
3276
3277	while ((c = getopt(argc, argv, "bcdhilmM:suCDRSAFLXevp:t:U:P")) != -1) {
3278		switch (c) {
3279		case 'b':
3280		case 'c':
3281		case 'd':
3282		case 'h':
3283		case 'i':
3284		case 'l':
3285		case 'm':
3286		case 's':
3287		case 'u':
3288		case 'C':
3289		case 'D':
3290		case 'R':
3291		case 'S':
3292			dump_opt[c]++;
3293			dump_all = 0;
3294			break;
3295		case 'A':
3296		case 'F':
3297		case 'L':
3298		case 'X':
3299		case 'e':
3300		case 'P':
3301			dump_opt[c]++;
3302			break;
3303		case 'v':
3304			verbose++;
3305			break;
3306		case 'M':
3307			max_inflight = strtoull(optarg, NULL, 0);
3308			if (max_inflight == 0) {
3309				(void) fprintf(stderr, "maximum number "
3310				    "of inflight I/Os must be greater "
3311				    "than 0\n");
3312				usage();
3313			}
3314			break;
3315		case 'p':
3316			if (searchdirs == NULL) {
3317				searchdirs = umem_alloc(sizeof (char *),
3318				    UMEM_NOFAIL);
3319			} else {
3320				char **tmp = umem_alloc((nsearch + 1) *
3321				    sizeof (char *), UMEM_NOFAIL);
3322				bcopy(searchdirs, tmp, nsearch *
3323				    sizeof (char *));
3324				umem_free(searchdirs,
3325				    nsearch * sizeof (char *));
3326				searchdirs = tmp;
3327			}
3328			searchdirs[nsearch++] = optarg;
3329			break;
3330		case 't':
3331			max_txg = strtoull(optarg, NULL, 0);
3332			if (max_txg < TXG_INITIAL) {
3333				(void) fprintf(stderr, "incorrect txg "
3334				    "specified: %s\n", optarg);
3335				usage();
3336			}
3337			break;
3338		case 'U':
3339			spa_config_path = optarg;
3340			break;
3341		default:
3342			usage();
3343			break;
3344		}
3345	}
3346
3347	if (!dump_opt['e'] && searchdirs != NULL) {
3348		(void) fprintf(stderr, "-p option requires use of -e\n");
3349		usage();
3350	}
3351
3352	kernel_init(FREAD);
3353	g_zfs = libzfs_init();
3354	ASSERT(g_zfs != NULL);
3355
3356	if (dump_all)
3357		verbose = MAX(verbose, 1);
3358
3359	for (c = 0; c < 256; c++) {
3360		if (dump_all && !strchr("elAFLRSXP", c))
3361			dump_opt[c] = 1;
3362		if (dump_opt[c])
3363			dump_opt[c] += verbose;
3364	}
3365
3366	aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3367	zfs_recover = (dump_opt['A'] > 1);
3368
3369	argc -= optind;
3370	argv += optind;
3371
3372	if (argc < 2 && dump_opt['R'])
3373		usage();
3374	if (argc < 1) {
3375		if (!dump_opt['e'] && dump_opt['C']) {
3376			dump_cachefile(spa_config_path);
3377			return (0);
3378		}
3379		usage();
3380	}
3381
3382	if (dump_opt['l']) {
3383		dump_label(argv[0]);
3384		return (0);
3385	}
3386
3387	if (dump_opt['X'] || dump_opt['F'])
3388		rewind = ZPOOL_DO_REWIND |
3389		    (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3390
3391	if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3392	    nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3393	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3394		fatal("internal error: %s", strerror(ENOMEM));
3395
3396	error = 0;
3397	target = argv[0];
3398
3399	if (dump_opt['e']) {
3400		nvlist_t *cfg = NULL;
3401		char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3402
3403		error = ENOENT;
3404		if (name) {
3405			if (dump_opt['C'] > 1) {
3406				(void) printf("\nConfiguration for import:\n");
3407				dump_nvlist(cfg, 8);
3408			}
3409			if (nvlist_add_nvlist(cfg,
3410			    ZPOOL_REWIND_POLICY, policy) != 0) {
3411				fatal("can't open '%s': %s",
3412				    target, strerror(ENOMEM));
3413			}
3414			if ((error = spa_import(name, cfg, NULL,
3415			    ZFS_IMPORT_MISSING_LOG)) != 0) {
3416				error = spa_import(name, cfg, NULL,
3417				    ZFS_IMPORT_VERBATIM);
3418			}
3419		}
3420	}
3421
3422	if (error == 0) {
3423		if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3424			error = spa_open_rewind(target, &spa, FTAG, policy,
3425			    NULL);
3426			if (error) {
3427				/*
3428				 * If we're missing the log device then
3429				 * try opening the pool after clearing the
3430				 * log state.
3431				 */
3432				mutex_enter(&spa_namespace_lock);
3433				if ((spa = spa_lookup(target)) != NULL &&
3434				    spa->spa_log_state == SPA_LOG_MISSING) {
3435					spa->spa_log_state = SPA_LOG_CLEAR;
3436					error = 0;
3437				}
3438				mutex_exit(&spa_namespace_lock);
3439
3440				if (!error) {
3441					error = spa_open_rewind(target, &spa,
3442					    FTAG, policy, NULL);
3443				}
3444			}
3445		} else {
3446			error = dmu_objset_own(target, DMU_OST_ANY,
3447			    B_TRUE, FTAG, &os);
3448		}
3449	}
3450	nvlist_free(policy);
3451
3452	if (error)
3453		fatal("can't open '%s': %s", target, strerror(error));
3454
3455	argv++;
3456	argc--;
3457	if (!dump_opt['R']) {
3458		if (argc > 0) {
3459			zopt_objects = argc;
3460			zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3461			for (i = 0; i < zopt_objects; i++) {
3462				errno = 0;
3463				zopt_object[i] = strtoull(argv[i], NULL, 0);
3464				if (zopt_object[i] == 0 && errno != 0)
3465					fatal("bad number %s: %s",
3466					    argv[i], strerror(errno));
3467			}
3468		}
3469		if (os != NULL) {
3470			dump_dir(os);
3471		} else if (zopt_objects > 0 && !dump_opt['m']) {
3472			dump_dir(spa->spa_meta_objset);
3473		} else {
3474			dump_zpool(spa);
3475		}
3476	} else {
3477		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3478		flagbits['c'] = ZDB_FLAG_CHECKSUM;
3479		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3480		flagbits['e'] = ZDB_FLAG_BSWAP;
3481		flagbits['g'] = ZDB_FLAG_GBH;
3482		flagbits['i'] = ZDB_FLAG_INDIRECT;
3483		flagbits['p'] = ZDB_FLAG_PHYS;
3484		flagbits['r'] = ZDB_FLAG_RAW;
3485
3486		for (i = 0; i < argc; i++)
3487			zdb_read_block(argv[i], spa);
3488	}
3489
3490	(os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3491
3492	fuid_table_destroy();
3493	sa_loaded = B_FALSE;
3494
3495	libzfs_fini(g_zfs);
3496	kernel_fini();
3497
3498	return (0);
3499}
3500