zdb.c revision 70163ac57e58ace1c5c94dfbe85dca5a974eff36
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) 2011, 2014 by Delphix. All rights reserved.
25 */
26
27#include <stdio.h>
28#include <unistd.h>
29#include <stdio_ext.h>
30#include <stdlib.h>
31#include <ctype.h>
32#include <sys/zfs_context.h>
33#include <sys/spa.h>
34#include <sys/spa_impl.h>
35#include <sys/dmu.h>
36#include <sys/zap.h>
37#include <sys/fs/zfs.h>
38#include <sys/zfs_znode.h>
39#include <sys/zfs_sa.h>
40#include <sys/sa.h>
41#include <sys/sa_impl.h>
42#include <sys/vdev.h>
43#include <sys/vdev_impl.h>
44#include <sys/metaslab_impl.h>
45#include <sys/dmu_objset.h>
46#include <sys/dsl_dir.h>
47#include <sys/dsl_dataset.h>
48#include <sys/dsl_pool.h>
49#include <sys/dbuf.h>
50#include <sys/zil.h>
51#include <sys/zil_impl.h>
52#include <sys/stat.h>
53#include <sys/resource.h>
54#include <sys/dmu_traverse.h>
55#include <sys/zio_checksum.h>
56#include <sys/zio_compress.h>
57#include <sys/zfs_fuid.h>
58#include <sys/arc.h>
59#include <sys/ddt.h>
60#include <sys/zfeature.h>
61#include <zfs_comutil.h>
62#undef ZFS_MAXNAMELEN
63#undef verify
64#include <libzfs.h>
65
66#define	ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?	\
67	zio_compress_table[(idx)].ci_name : "UNKNOWN")
68#define	ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?	\
69	zio_checksum_table[(idx)].ci_name : "UNKNOWN")
70#define	ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?	\
71	dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?	\
72	dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
73#define	ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :		\
74	(((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ?	\
75	DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
76
77#ifndef lint
78extern boolean_t zfs_recover;
79extern uint64_t zfs_arc_max, zfs_arc_meta_limit;
80extern int zfs_vdev_async_read_max_active;
81#else
82boolean_t zfs_recover;
83uint64_t zfs_arc_max, zfs_arc_meta_limit;
84int zfs_vdev_async_read_max_active;
85#endif
86
87const char cmdname[] = "zdb";
88uint8_t dump_opt[256];
89
90typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
91
92extern void dump_intent_log(zilog_t *);
93uint64_t *zopt_object = NULL;
94int zopt_objects = 0;
95libzfs_handle_t *g_zfs;
96uint64_t max_inflight = 1000;
97
98/*
99 * These libumem hooks provide a reasonable set of defaults for the allocator's
100 * debugging facilities.
101 */
102const char *
103_umem_debug_init()
104{
105	return ("default,verbose"); /* $UMEM_DEBUG setting */
106}
107
108const char *
109_umem_logging_init(void)
110{
111	return ("fail,contents"); /* $UMEM_LOGGING setting */
112}
113
114static void
115usage(void)
116{
117	(void) fprintf(stderr,
118	    "Usage: %s [-CumMdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
119	    "[-U config] [-I inflight I/Os] [-x dumpdir] poolname [object...]\n"
120	    "       %s [-divPA] [-e -p path...] [-U config] dataset "
121	    "[object...]\n"
122	    "       %s -mM [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
123	    "poolname [vdev [metaslab...]]\n"
124	    "       %s -R [-A] [-e [-p path...]] poolname "
125	    "vdev:offset:size[:flags]\n"
126	    "       %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
127	    "       %s -l [-uA] device\n"
128	    "       %s -C [-A] [-U config]\n\n",
129	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
130
131	(void) fprintf(stderr, "    Dataset name must include at least one "
132	    "separator character '/' or '@'\n");
133	(void) fprintf(stderr, "    If dataset name is specified, only that "
134	    "dataset is dumped\n");
135	(void) fprintf(stderr, "    If object numbers are specified, only "
136	    "those objects are dumped\n\n");
137	(void) fprintf(stderr, "    Options to control amount of output:\n");
138	(void) fprintf(stderr, "        -u uberblock\n");
139	(void) fprintf(stderr, "        -d dataset(s)\n");
140	(void) fprintf(stderr, "        -i intent logs\n");
141	(void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
142	(void) fprintf(stderr, "        -h pool history\n");
143	(void) fprintf(stderr, "        -b block statistics\n");
144	(void) fprintf(stderr, "        -m metaslabs\n");
145	(void) fprintf(stderr, "        -M metaslab groups\n");
146	(void) fprintf(stderr, "        -c checksum all metadata (twice for "
147	    "all data) blocks\n");
148	(void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
149	(void) fprintf(stderr, "        -D dedup statistics\n");
150	(void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
151	(void) fprintf(stderr, "        -v verbose (applies to all others)\n");
152	(void) fprintf(stderr, "        -l dump label contents\n");
153	(void) fprintf(stderr, "        -L disable leak tracking (do not "
154	    "load spacemaps)\n");
155	(void) fprintf(stderr, "        -R read and display block from a "
156	    "device\n\n");
157	(void) fprintf(stderr, "    Below options are intended for use "
158	    "with other options:\n");
159	(void) fprintf(stderr, "        -A ignore assertions (-A), enable "
160	    "panic recovery (-AA) or both (-AAA)\n");
161	(void) fprintf(stderr, "        -F attempt automatic rewind within "
162	    "safe range of transaction groups\n");
163	(void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
164	    "cachefile\n");
165	(void) fprintf(stderr, "        -X attempt extreme rewind (does not "
166	    "work with dataset)\n");
167	(void) fprintf(stderr, "        -e pool is exported/destroyed/"
168	    "has altroot/not in a cachefile\n");
169	(void) fprintf(stderr, "        -p <path> -- use one or more with "
170	    "-e to specify path to vdev dir\n");
171	(void) fprintf(stderr, "        -x <dumpdir> -- "
172	    "dump all read blocks into specified directory\n");
173	(void) fprintf(stderr, "        -P print numbers in parseable form\n");
174	(void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
175	    "searching for uberblocks\n");
176	(void) fprintf(stderr, "        -I <number of inflight I/Os> -- "
177	    "specify the maximum number of "
178	    "checksumming I/Os [default is 200]\n");
179	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
180	    "to make only that option verbose\n");
181	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
182	exit(1);
183}
184
185/*
186 * Called for usage errors that are discovered after a call to spa_open(),
187 * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
188 */
189
190static void
191fatal(const char *fmt, ...)
192{
193	va_list ap;
194
195	va_start(ap, fmt);
196	(void) fprintf(stderr, "%s: ", cmdname);
197	(void) vfprintf(stderr, fmt, ap);
198	va_end(ap);
199	(void) fprintf(stderr, "\n");
200
201	exit(1);
202}
203
204/* ARGSUSED */
205static void
206dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
207{
208	nvlist_t *nv;
209	size_t nvsize = *(uint64_t *)data;
210	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
211
212	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
213
214	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
215
216	umem_free(packed, nvsize);
217
218	dump_nvlist(nv, 8);
219
220	nvlist_free(nv);
221}
222
223/* ARGSUSED */
224static void
225dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
226{
227	spa_history_phys_t *shp = data;
228
229	if (shp == NULL)
230		return;
231
232	(void) printf("\t\tpool_create_len = %llu\n",
233	    (u_longlong_t)shp->sh_pool_create_len);
234	(void) printf("\t\tphys_max_off = %llu\n",
235	    (u_longlong_t)shp->sh_phys_max_off);
236	(void) printf("\t\tbof = %llu\n",
237	    (u_longlong_t)shp->sh_bof);
238	(void) printf("\t\teof = %llu\n",
239	    (u_longlong_t)shp->sh_eof);
240	(void) printf("\t\trecords_lost = %llu\n",
241	    (u_longlong_t)shp->sh_records_lost);
242}
243
244static void
245zdb_nicenum(uint64_t num, char *buf)
246{
247	if (dump_opt['P'])
248		(void) sprintf(buf, "%llu", (longlong_t)num);
249	else
250		nicenum(num, buf);
251}
252
253const char histo_stars[] = "****************************************";
254const int histo_width = sizeof (histo_stars) - 1;
255
256static void
257dump_histogram(const uint64_t *histo, int size, int offset)
258{
259	int i;
260	int minidx = size - 1;
261	int maxidx = 0;
262	uint64_t max = 0;
263
264	for (i = 0; i < size; i++) {
265		if (histo[i] > max)
266			max = histo[i];
267		if (histo[i] > 0 && i > maxidx)
268			maxidx = i;
269		if (histo[i] > 0 && i < minidx)
270			minidx = i;
271	}
272
273	if (max < histo_width)
274		max = histo_width;
275
276	for (i = minidx; i <= maxidx; i++) {
277		(void) printf("\t\t\t%3u: %6llu %s\n",
278		    i + offset, (u_longlong_t)histo[i],
279		    &histo_stars[(max - histo[i]) * histo_width / max]);
280	}
281}
282
283static void
284dump_zap_stats(objset_t *os, uint64_t object)
285{
286	int error;
287	zap_stats_t zs;
288
289	error = zap_get_stats(os, object, &zs);
290	if (error)
291		return;
292
293	if (zs.zs_ptrtbl_len == 0) {
294		ASSERT(zs.zs_num_blocks == 1);
295		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
296		    (u_longlong_t)zs.zs_blocksize,
297		    (u_longlong_t)zs.zs_num_entries);
298		return;
299	}
300
301	(void) printf("\tFat ZAP stats:\n");
302
303	(void) printf("\t\tPointer table:\n");
304	(void) printf("\t\t\t%llu elements\n",
305	    (u_longlong_t)zs.zs_ptrtbl_len);
306	(void) printf("\t\t\tzt_blk: %llu\n",
307	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
308	(void) printf("\t\t\tzt_numblks: %llu\n",
309	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
310	(void) printf("\t\t\tzt_shift: %llu\n",
311	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
312	(void) printf("\t\t\tzt_blks_copied: %llu\n",
313	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
314	(void) printf("\t\t\tzt_nextblk: %llu\n",
315	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
316
317	(void) printf("\t\tZAP entries: %llu\n",
318	    (u_longlong_t)zs.zs_num_entries);
319	(void) printf("\t\tLeaf blocks: %llu\n",
320	    (u_longlong_t)zs.zs_num_leafs);
321	(void) printf("\t\tTotal blocks: %llu\n",
322	    (u_longlong_t)zs.zs_num_blocks);
323	(void) printf("\t\tzap_block_type: 0x%llx\n",
324	    (u_longlong_t)zs.zs_block_type);
325	(void) printf("\t\tzap_magic: 0x%llx\n",
326	    (u_longlong_t)zs.zs_magic);
327	(void) printf("\t\tzap_salt: 0x%llx\n",
328	    (u_longlong_t)zs.zs_salt);
329
330	(void) printf("\t\tLeafs with 2^n pointers:\n");
331	dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
332
333	(void) printf("\t\tBlocks with n*5 entries:\n");
334	dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
335
336	(void) printf("\t\tBlocks n/10 full:\n");
337	dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
338
339	(void) printf("\t\tEntries with n chunks:\n");
340	dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
341
342	(void) printf("\t\tBuckets with n entries:\n");
343	dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
344}
345
346/*ARGSUSED*/
347static void
348dump_none(objset_t *os, uint64_t object, void *data, size_t size)
349{
350}
351
352/*ARGSUSED*/
353static void
354dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
355{
356	(void) printf("\tUNKNOWN OBJECT TYPE\n");
357}
358
359/*ARGSUSED*/
360void
361dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
362{
363}
364
365/*ARGSUSED*/
366static void
367dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
368{
369}
370
371/*ARGSUSED*/
372static void
373dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
374{
375	zap_cursor_t zc;
376	zap_attribute_t attr;
377	void *prop;
378	int i;
379
380	dump_zap_stats(os, object);
381	(void) printf("\n");
382
383	for (zap_cursor_init(&zc, os, object);
384	    zap_cursor_retrieve(&zc, &attr) == 0;
385	    zap_cursor_advance(&zc)) {
386		(void) printf("\t\t%s = ", attr.za_name);
387		if (attr.za_num_integers == 0) {
388			(void) printf("\n");
389			continue;
390		}
391		prop = umem_zalloc(attr.za_num_integers *
392		    attr.za_integer_length, UMEM_NOFAIL);
393		(void) zap_lookup(os, object, attr.za_name,
394		    attr.za_integer_length, attr.za_num_integers, prop);
395		if (attr.za_integer_length == 1) {
396			(void) printf("%s", (char *)prop);
397		} else {
398			for (i = 0; i < attr.za_num_integers; i++) {
399				switch (attr.za_integer_length) {
400				case 2:
401					(void) printf("%u ",
402					    ((uint16_t *)prop)[i]);
403					break;
404				case 4:
405					(void) printf("%u ",
406					    ((uint32_t *)prop)[i]);
407					break;
408				case 8:
409					(void) printf("%lld ",
410					    (u_longlong_t)((int64_t *)prop)[i]);
411					break;
412				}
413			}
414		}
415		(void) printf("\n");
416		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
417	}
418	zap_cursor_fini(&zc);
419}
420
421/*ARGSUSED*/
422static void
423dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
424{
425	dump_zap_stats(os, object);
426	/* contents are printed elsewhere, properly decoded */
427}
428
429/*ARGSUSED*/
430static void
431dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
432{
433	zap_cursor_t zc;
434	zap_attribute_t attr;
435
436	dump_zap_stats(os, object);
437	(void) printf("\n");
438
439	for (zap_cursor_init(&zc, os, object);
440	    zap_cursor_retrieve(&zc, &attr) == 0;
441	    zap_cursor_advance(&zc)) {
442		(void) printf("\t\t%s = ", attr.za_name);
443		if (attr.za_num_integers == 0) {
444			(void) printf("\n");
445			continue;
446		}
447		(void) printf(" %llx : [%d:%d:%d]\n",
448		    (u_longlong_t)attr.za_first_integer,
449		    (int)ATTR_LENGTH(attr.za_first_integer),
450		    (int)ATTR_BSWAP(attr.za_first_integer),
451		    (int)ATTR_NUM(attr.za_first_integer));
452	}
453	zap_cursor_fini(&zc);
454}
455
456/*ARGSUSED*/
457static void
458dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
459{
460	zap_cursor_t zc;
461	zap_attribute_t attr;
462	uint16_t *layout_attrs;
463	int i;
464
465	dump_zap_stats(os, object);
466	(void) printf("\n");
467
468	for (zap_cursor_init(&zc, os, object);
469	    zap_cursor_retrieve(&zc, &attr) == 0;
470	    zap_cursor_advance(&zc)) {
471		(void) printf("\t\t%s = [", attr.za_name);
472		if (attr.za_num_integers == 0) {
473			(void) printf("\n");
474			continue;
475		}
476
477		VERIFY(attr.za_integer_length == 2);
478		layout_attrs = umem_zalloc(attr.za_num_integers *
479		    attr.za_integer_length, UMEM_NOFAIL);
480
481		VERIFY(zap_lookup(os, object, attr.za_name,
482		    attr.za_integer_length,
483		    attr.za_num_integers, layout_attrs) == 0);
484
485		for (i = 0; i != attr.za_num_integers; i++)
486			(void) printf(" %d ", (int)layout_attrs[i]);
487		(void) printf("]\n");
488		umem_free(layout_attrs,
489		    attr.za_num_integers * attr.za_integer_length);
490	}
491	zap_cursor_fini(&zc);
492}
493
494/*ARGSUSED*/
495static void
496dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
497{
498	zap_cursor_t zc;
499	zap_attribute_t attr;
500	const char *typenames[] = {
501		/* 0 */ "not specified",
502		/* 1 */ "FIFO",
503		/* 2 */ "Character Device",
504		/* 3 */ "3 (invalid)",
505		/* 4 */ "Directory",
506		/* 5 */ "5 (invalid)",
507		/* 6 */ "Block Device",
508		/* 7 */ "7 (invalid)",
509		/* 8 */ "Regular File",
510		/* 9 */ "9 (invalid)",
511		/* 10 */ "Symbolic Link",
512		/* 11 */ "11 (invalid)",
513		/* 12 */ "Socket",
514		/* 13 */ "Door",
515		/* 14 */ "Event Port",
516		/* 15 */ "15 (invalid)",
517	};
518
519	dump_zap_stats(os, object);
520	(void) printf("\n");
521
522	for (zap_cursor_init(&zc, os, object);
523	    zap_cursor_retrieve(&zc, &attr) == 0;
524	    zap_cursor_advance(&zc)) {
525		(void) printf("\t\t%s = %lld (type: %s)\n",
526		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
527		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
528	}
529	zap_cursor_fini(&zc);
530}
531
532int
533get_dtl_refcount(vdev_t *vd)
534{
535	int refcount = 0;
536
537	if (vd->vdev_ops->vdev_op_leaf) {
538		space_map_t *sm = vd->vdev_dtl_sm;
539
540		if (sm != NULL &&
541		    sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
542			return (1);
543		return (0);
544	}
545
546	for (int c = 0; c < vd->vdev_children; c++)
547		refcount += get_dtl_refcount(vd->vdev_child[c]);
548	return (refcount);
549}
550
551int
552get_metaslab_refcount(vdev_t *vd)
553{
554	int refcount = 0;
555
556	if (vd->vdev_top == vd && !vd->vdev_removing) {
557		for (int m = 0; m < vd->vdev_ms_count; m++) {
558			space_map_t *sm = vd->vdev_ms[m]->ms_sm;
559
560			if (sm != NULL &&
561			    sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
562				refcount++;
563		}
564	}
565	for (int c = 0; c < vd->vdev_children; c++)
566		refcount += get_metaslab_refcount(vd->vdev_child[c]);
567
568	return (refcount);
569}
570
571static int
572verify_spacemap_refcounts(spa_t *spa)
573{
574	uint64_t expected_refcount = 0;
575	uint64_t actual_refcount;
576
577	(void) feature_get_refcount(spa,
578	    &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
579	    &expected_refcount);
580	actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
581	actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
582
583	if (expected_refcount != actual_refcount) {
584		(void) printf("space map refcount mismatch: expected %lld != "
585		    "actual %lld\n",
586		    (longlong_t)expected_refcount,
587		    (longlong_t)actual_refcount);
588		return (2);
589	}
590	return (0);
591}
592
593static void
594dump_spacemap(objset_t *os, space_map_t *sm)
595{
596	uint64_t alloc, offset, entry;
597	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
598			    "INVALID", "INVALID", "INVALID", "INVALID" };
599
600	if (sm == NULL)
601		return;
602
603	/*
604	 * Print out the freelist entries in both encoded and decoded form.
605	 */
606	alloc = 0;
607	for (offset = 0; offset < space_map_length(sm);
608	    offset += sizeof (entry)) {
609		uint8_t mapshift = sm->sm_shift;
610
611		VERIFY0(dmu_read(os, space_map_object(sm), offset,
612		    sizeof (entry), &entry, DMU_READ_PREFETCH));
613		if (SM_DEBUG_DECODE(entry)) {
614
615			(void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
616			    (u_longlong_t)(offset / sizeof (entry)),
617			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
618			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
619			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
620		} else {
621			(void) printf("\t    [%6llu]    %c  range:"
622			    " %010llx-%010llx  size: %06llx\n",
623			    (u_longlong_t)(offset / sizeof (entry)),
624			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
625			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
626			    mapshift) + sm->sm_start),
627			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
628			    mapshift) + sm->sm_start +
629			    (SM_RUN_DECODE(entry) << mapshift)),
630			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
631			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
632				alloc += SM_RUN_DECODE(entry) << mapshift;
633			else
634				alloc -= SM_RUN_DECODE(entry) << mapshift;
635		}
636	}
637	if (alloc != space_map_allocated(sm)) {
638		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
639		    "with space map summary (%llu)\n",
640		    (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
641	}
642}
643
644static void
645dump_metaslab_stats(metaslab_t *msp)
646{
647	char maxbuf[32];
648	range_tree_t *rt = msp->ms_tree;
649	avl_tree_t *t = &msp->ms_size_tree;
650	int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
651
652	zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
653
654	(void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
655	    "segments", avl_numnodes(t), "maxsize", maxbuf,
656	    "freepct", free_pct);
657	(void) printf("\tIn-memory histogram:\n");
658	dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
659}
660
661static void
662dump_metaslab(metaslab_t *msp)
663{
664	vdev_t *vd = msp->ms_group->mg_vd;
665	spa_t *spa = vd->vdev_spa;
666	space_map_t *sm = msp->ms_sm;
667	char freebuf[32];
668
669	zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
670
671	(void) printf(
672	    "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
673	    (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
674	    (u_longlong_t)space_map_object(sm), freebuf);
675
676	if (dump_opt['m'] > 2 && !dump_opt['L']) {
677		mutex_enter(&msp->ms_lock);
678		metaslab_load_wait(msp);
679		if (!msp->ms_loaded) {
680			VERIFY0(metaslab_load(msp));
681			range_tree_stat_verify(msp->ms_tree);
682		}
683		dump_metaslab_stats(msp);
684		metaslab_unload(msp);
685		mutex_exit(&msp->ms_lock);
686	}
687
688	if (dump_opt['m'] > 1 && sm != NULL &&
689	    spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
690		/*
691		 * The space map histogram represents free space in chunks
692		 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
693		 */
694		(void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
695		    (u_longlong_t)msp->ms_fragmentation);
696		dump_histogram(sm->sm_phys->smp_histogram,
697		    SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
698	}
699
700	if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
701		ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
702
703		mutex_enter(&msp->ms_lock);
704		dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
705		mutex_exit(&msp->ms_lock);
706	}
707}
708
709static void
710print_vdev_metaslab_header(vdev_t *vd)
711{
712	(void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
713	    (u_longlong_t)vd->vdev_id,
714	    "metaslabs", (u_longlong_t)vd->vdev_ms_count,
715	    "offset", "spacemap", "free");
716	(void) printf("\t%15s   %19s   %15s   %10s\n",
717	    "---------------", "-------------------",
718	    "---------------", "-------------");
719}
720
721static void
722dump_metaslab_groups(spa_t *spa)
723{
724	vdev_t *rvd = spa->spa_root_vdev;
725	metaslab_class_t *mc = spa_normal_class(spa);
726	uint64_t fragmentation;
727
728	metaslab_class_histogram_verify(mc);
729
730	for (int c = 0; c < rvd->vdev_children; c++) {
731		vdev_t *tvd = rvd->vdev_child[c];
732		metaslab_group_t *mg = tvd->vdev_mg;
733
734		if (mg->mg_class != mc)
735			continue;
736
737		metaslab_group_histogram_verify(mg);
738		mg->mg_fragmentation = metaslab_group_fragmentation(mg);
739
740		(void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
741		    "fragmentation",
742		    (u_longlong_t)tvd->vdev_id,
743		    (u_longlong_t)tvd->vdev_ms_count);
744		if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
745			(void) printf("%3s\n", "-");
746		} else {
747			(void) printf("%3llu%%\n",
748			    (u_longlong_t)mg->mg_fragmentation);
749		}
750		dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
751	}
752
753	(void) printf("\tpool %s\tfragmentation", spa_name(spa));
754	fragmentation = metaslab_class_fragmentation(mc);
755	if (fragmentation == ZFS_FRAG_INVALID)
756		(void) printf("\t%3s\n", "-");
757	else
758		(void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
759	dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
760}
761
762static void
763dump_metaslabs(spa_t *spa)
764{
765	vdev_t *vd, *rvd = spa->spa_root_vdev;
766	uint64_t m, c = 0, children = rvd->vdev_children;
767
768	(void) printf("\nMetaslabs:\n");
769
770	if (!dump_opt['d'] && zopt_objects > 0) {
771		c = zopt_object[0];
772
773		if (c >= children)
774			(void) fatal("bad vdev id: %llu", (u_longlong_t)c);
775
776		if (zopt_objects > 1) {
777			vd = rvd->vdev_child[c];
778			print_vdev_metaslab_header(vd);
779
780			for (m = 1; m < zopt_objects; m++) {
781				if (zopt_object[m] < vd->vdev_ms_count)
782					dump_metaslab(
783					    vd->vdev_ms[zopt_object[m]]);
784				else
785					(void) fprintf(stderr, "bad metaslab "
786					    "number %llu\n",
787					    (u_longlong_t)zopt_object[m]);
788			}
789			(void) printf("\n");
790			return;
791		}
792		children = c + 1;
793	}
794	for (; c < children; c++) {
795		vd = rvd->vdev_child[c];
796		print_vdev_metaslab_header(vd);
797
798		for (m = 0; m < vd->vdev_ms_count; m++)
799			dump_metaslab(vd->vdev_ms[m]);
800		(void) printf("\n");
801	}
802}
803
804static void
805dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
806{
807	const ddt_phys_t *ddp = dde->dde_phys;
808	const ddt_key_t *ddk = &dde->dde_key;
809	char *types[4] = { "ditto", "single", "double", "triple" };
810	char blkbuf[BP_SPRINTF_LEN];
811	blkptr_t blk;
812
813	for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
814		if (ddp->ddp_phys_birth == 0)
815			continue;
816		ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
817		snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
818		(void) printf("index %llx refcnt %llu %s %s\n",
819		    (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
820		    types[p], blkbuf);
821	}
822}
823
824static void
825dump_dedup_ratio(const ddt_stat_t *dds)
826{
827	double rL, rP, rD, D, dedup, compress, copies;
828
829	if (dds->dds_blocks == 0)
830		return;
831
832	rL = (double)dds->dds_ref_lsize;
833	rP = (double)dds->dds_ref_psize;
834	rD = (double)dds->dds_ref_dsize;
835	D = (double)dds->dds_dsize;
836
837	dedup = rD / D;
838	compress = rL / rP;
839	copies = rD / rP;
840
841	(void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
842	    "dedup * compress / copies = %.2f\n\n",
843	    dedup, compress, copies, dedup * compress / copies);
844}
845
846static void
847dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
848{
849	char name[DDT_NAMELEN];
850	ddt_entry_t dde;
851	uint64_t walk = 0;
852	dmu_object_info_t doi;
853	uint64_t count, dspace, mspace;
854	int error;
855
856	error = ddt_object_info(ddt, type, class, &doi);
857
858	if (error == ENOENT)
859		return;
860	ASSERT(error == 0);
861
862	if ((count = ddt_object_count(ddt, type, class)) == 0)
863		return;
864
865	dspace = doi.doi_physical_blocks_512 << 9;
866	mspace = doi.doi_fill_count * doi.doi_data_block_size;
867
868	ddt_object_name(ddt, type, class, name);
869
870	(void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
871	    name,
872	    (u_longlong_t)count,
873	    (u_longlong_t)(dspace / count),
874	    (u_longlong_t)(mspace / count));
875
876	if (dump_opt['D'] < 3)
877		return;
878
879	zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
880
881	if (dump_opt['D'] < 4)
882		return;
883
884	if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
885		return;
886
887	(void) printf("%s contents:\n\n", name);
888
889	while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
890		dump_dde(ddt, &dde, walk);
891
892	ASSERT(error == ENOENT);
893
894	(void) printf("\n");
895}
896
897static void
898dump_all_ddts(spa_t *spa)
899{
900	ddt_histogram_t ddh_total = { 0 };
901	ddt_stat_t dds_total = { 0 };
902
903	for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
904		ddt_t *ddt = spa->spa_ddt[c];
905		for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
906			for (enum ddt_class class = 0; class < DDT_CLASSES;
907			    class++) {
908				dump_ddt(ddt, type, class);
909			}
910		}
911	}
912
913	ddt_get_dedup_stats(spa, &dds_total);
914
915	if (dds_total.dds_blocks == 0) {
916		(void) printf("All DDTs are empty\n");
917		return;
918	}
919
920	(void) printf("\n");
921
922	if (dump_opt['D'] > 1) {
923		(void) printf("DDT histogram (aggregated over all DDTs):\n");
924		ddt_get_dedup_histogram(spa, &ddh_total);
925		zpool_dump_ddt(&dds_total, &ddh_total);
926	}
927
928	dump_dedup_ratio(&dds_total);
929}
930
931static void
932dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
933{
934	char *prefix = arg;
935
936	(void) printf("%s [%llu,%llu) length %llu\n",
937	    prefix,
938	    (u_longlong_t)start,
939	    (u_longlong_t)(start + size),
940	    (u_longlong_t)(size));
941}
942
943static void
944dump_dtl(vdev_t *vd, int indent)
945{
946	spa_t *spa = vd->vdev_spa;
947	boolean_t required;
948	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
949	char prefix[256];
950
951	spa_vdev_state_enter(spa, SCL_NONE);
952	required = vdev_dtl_required(vd);
953	(void) spa_vdev_state_exit(spa, NULL, 0);
954
955	if (indent == 0)
956		(void) printf("\nDirty time logs:\n\n");
957
958	(void) printf("\t%*s%s [%s]\n", indent, "",
959	    vd->vdev_path ? vd->vdev_path :
960	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
961	    required ? "DTL-required" : "DTL-expendable");
962
963	for (int t = 0; t < DTL_TYPES; t++) {
964		range_tree_t *rt = vd->vdev_dtl[t];
965		if (range_tree_space(rt) == 0)
966			continue;
967		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
968		    indent + 2, "", name[t]);
969		mutex_enter(rt->rt_lock);
970		range_tree_walk(rt, dump_dtl_seg, prefix);
971		mutex_exit(rt->rt_lock);
972		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
973			dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
974	}
975
976	for (int c = 0; c < vd->vdev_children; c++)
977		dump_dtl(vd->vdev_child[c], indent + 4);
978}
979
980static void
981dump_history(spa_t *spa)
982{
983	nvlist_t **events = NULL;
984	char buf[SPA_MAXBLOCKSIZE];
985	uint64_t resid, len, off = 0;
986	uint_t num = 0;
987	int error;
988	time_t tsec;
989	struct tm t;
990	char tbuf[30];
991	char internalstr[MAXPATHLEN];
992
993	do {
994		len = sizeof (buf);
995
996		if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
997			(void) fprintf(stderr, "Unable to read history: "
998			    "error %d\n", error);
999			return;
1000		}
1001
1002		if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1003			break;
1004
1005		off -= resid;
1006	} while (len != 0);
1007
1008	(void) printf("\nHistory:\n");
1009	for (int i = 0; i < num; i++) {
1010		uint64_t time, txg, ievent;
1011		char *cmd, *intstr;
1012		boolean_t printed = B_FALSE;
1013
1014		if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
1015		    &time) != 0)
1016			goto next;
1017		if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
1018		    &cmd) != 0) {
1019			if (nvlist_lookup_uint64(events[i],
1020			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1021				goto next;
1022			verify(nvlist_lookup_uint64(events[i],
1023			    ZPOOL_HIST_TXG, &txg) == 0);
1024			verify(nvlist_lookup_string(events[i],
1025			    ZPOOL_HIST_INT_STR, &intstr) == 0);
1026			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1027				goto next;
1028
1029			(void) snprintf(internalstr,
1030			    sizeof (internalstr),
1031			    "[internal %s txg:%lld] %s",
1032			    zfs_history_event_names[ievent], txg,
1033			    intstr);
1034			cmd = internalstr;
1035		}
1036		tsec = time;
1037		(void) localtime_r(&tsec, &t);
1038		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1039		(void) printf("%s %s\n", tbuf, cmd);
1040		printed = B_TRUE;
1041
1042next:
1043		if (dump_opt['h'] > 1) {
1044			if (!printed)
1045				(void) printf("unrecognized record:\n");
1046			dump_nvlist(events[i], 2);
1047		}
1048	}
1049}
1050
1051/*ARGSUSED*/
1052static void
1053dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1054{
1055}
1056
1057static uint64_t
1058blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1059    const zbookmark_phys_t *zb)
1060{
1061	if (dnp == NULL) {
1062		ASSERT(zb->zb_level < 0);
1063		if (zb->zb_object == 0)
1064			return (zb->zb_blkid);
1065		return (zb->zb_blkid * BP_GET_LSIZE(bp));
1066	}
1067
1068	ASSERT(zb->zb_level >= 0);
1069
1070	return ((zb->zb_blkid <<
1071	    (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1072	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1073}
1074
1075static void
1076snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1077{
1078	const dva_t *dva = bp->blk_dva;
1079	int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1080
1081	if (dump_opt['b'] >= 6) {
1082		snprintf_blkptr(blkbuf, buflen, bp);
1083		return;
1084	}
1085
1086	if (BP_IS_EMBEDDED(bp)) {
1087		(void) sprintf(blkbuf,
1088		    "EMBEDDED et=%u %llxL/%llxP B=%llu",
1089		    (int)BPE_GET_ETYPE(bp),
1090		    (u_longlong_t)BPE_GET_LSIZE(bp),
1091		    (u_longlong_t)BPE_GET_PSIZE(bp),
1092		    (u_longlong_t)bp->blk_birth);
1093		return;
1094	}
1095
1096	blkbuf[0] = '\0';
1097	for (int i = 0; i < ndvas; i++)
1098		(void) snprintf(blkbuf + strlen(blkbuf),
1099		    buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1100		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1101		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1102		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1103
1104	if (BP_IS_HOLE(bp)) {
1105		(void) snprintf(blkbuf + strlen(blkbuf),
1106		    buflen - strlen(blkbuf),
1107		    "%llxL B=%llu",
1108		    (u_longlong_t)BP_GET_LSIZE(bp),
1109		    (u_longlong_t)bp->blk_birth);
1110	} else {
1111		(void) snprintf(blkbuf + strlen(blkbuf),
1112		    buflen - strlen(blkbuf),
1113		    "%llxL/%llxP F=%llu B=%llu/%llu",
1114		    (u_longlong_t)BP_GET_LSIZE(bp),
1115		    (u_longlong_t)BP_GET_PSIZE(bp),
1116		    (u_longlong_t)BP_GET_FILL(bp),
1117		    (u_longlong_t)bp->blk_birth,
1118		    (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1119	}
1120}
1121
1122static void
1123print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1124    const dnode_phys_t *dnp)
1125{
1126	char blkbuf[BP_SPRINTF_LEN];
1127	int l;
1128
1129	if (!BP_IS_EMBEDDED(bp)) {
1130		ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1131		ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1132	}
1133
1134	(void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1135
1136	ASSERT(zb->zb_level >= 0);
1137
1138	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1139		if (l == zb->zb_level) {
1140			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
1141		} else {
1142			(void) printf(" ");
1143		}
1144	}
1145
1146	snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1147	(void) printf("%s\n", blkbuf);
1148}
1149
1150static int
1151visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1152    blkptr_t *bp, const zbookmark_phys_t *zb)
1153{
1154	int err = 0;
1155
1156	if (bp->blk_birth == 0)
1157		return (0);
1158
1159	print_indirect(bp, zb, dnp);
1160
1161	if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1162		arc_flags_t flags = ARC_FLAG_WAIT;
1163		int i;
1164		blkptr_t *cbp;
1165		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1166		arc_buf_t *buf;
1167		uint64_t fill = 0;
1168
1169		err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1170		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1171		if (err)
1172			return (err);
1173		ASSERT(buf->b_data);
1174
1175		/* recursively visit blocks below this */
1176		cbp = buf->b_data;
1177		for (i = 0; i < epb; i++, cbp++) {
1178			zbookmark_phys_t czb;
1179
1180			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1181			    zb->zb_level - 1,
1182			    zb->zb_blkid * epb + i);
1183			err = visit_indirect(spa, dnp, cbp, &czb);
1184			if (err)
1185				break;
1186			fill += BP_GET_FILL(cbp);
1187		}
1188		if (!err)
1189			ASSERT3U(fill, ==, BP_GET_FILL(bp));
1190		(void) arc_buf_remove_ref(buf, &buf);
1191	}
1192
1193	return (err);
1194}
1195
1196/*ARGSUSED*/
1197static void
1198dump_indirect(dnode_t *dn)
1199{
1200	dnode_phys_t *dnp = dn->dn_phys;
1201	int j;
1202	zbookmark_phys_t czb;
1203
1204	(void) printf("Indirect blocks:\n");
1205
1206	SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1207	    dn->dn_object, dnp->dn_nlevels - 1, 0);
1208	for (j = 0; j < dnp->dn_nblkptr; j++) {
1209		czb.zb_blkid = j;
1210		(void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1211		    &dnp->dn_blkptr[j], &czb);
1212	}
1213
1214	(void) printf("\n");
1215}
1216
1217/*ARGSUSED*/
1218static void
1219dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1220{
1221	dsl_dir_phys_t *dd = data;
1222	time_t crtime;
1223	char nice[32];
1224
1225	if (dd == NULL)
1226		return;
1227
1228	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1229
1230	crtime = dd->dd_creation_time;
1231	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1232	(void) printf("\t\thead_dataset_obj = %llu\n",
1233	    (u_longlong_t)dd->dd_head_dataset_obj);
1234	(void) printf("\t\tparent_dir_obj = %llu\n",
1235	    (u_longlong_t)dd->dd_parent_obj);
1236	(void) printf("\t\torigin_obj = %llu\n",
1237	    (u_longlong_t)dd->dd_origin_obj);
1238	(void) printf("\t\tchild_dir_zapobj = %llu\n",
1239	    (u_longlong_t)dd->dd_child_dir_zapobj);
1240	zdb_nicenum(dd->dd_used_bytes, nice);
1241	(void) printf("\t\tused_bytes = %s\n", nice);
1242	zdb_nicenum(dd->dd_compressed_bytes, nice);
1243	(void) printf("\t\tcompressed_bytes = %s\n", nice);
1244	zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1245	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
1246	zdb_nicenum(dd->dd_quota, nice);
1247	(void) printf("\t\tquota = %s\n", nice);
1248	zdb_nicenum(dd->dd_reserved, nice);
1249	(void) printf("\t\treserved = %s\n", nice);
1250	(void) printf("\t\tprops_zapobj = %llu\n",
1251	    (u_longlong_t)dd->dd_props_zapobj);
1252	(void) printf("\t\tdeleg_zapobj = %llu\n",
1253	    (u_longlong_t)dd->dd_deleg_zapobj);
1254	(void) printf("\t\tflags = %llx\n",
1255	    (u_longlong_t)dd->dd_flags);
1256
1257#define	DO(which) \
1258	zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1259	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1260	DO(HEAD);
1261	DO(SNAP);
1262	DO(CHILD);
1263	DO(CHILD_RSRV);
1264	DO(REFRSRV);
1265#undef DO
1266}
1267
1268/*ARGSUSED*/
1269static void
1270dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1271{
1272	dsl_dataset_phys_t *ds = data;
1273	time_t crtime;
1274	char used[32], compressed[32], uncompressed[32], unique[32];
1275	char blkbuf[BP_SPRINTF_LEN];
1276
1277	if (ds == NULL)
1278		return;
1279
1280	ASSERT(size == sizeof (*ds));
1281	crtime = ds->ds_creation_time;
1282	zdb_nicenum(ds->ds_referenced_bytes, used);
1283	zdb_nicenum(ds->ds_compressed_bytes, compressed);
1284	zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1285	zdb_nicenum(ds->ds_unique_bytes, unique);
1286	snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1287
1288	(void) printf("\t\tdir_obj = %llu\n",
1289	    (u_longlong_t)ds->ds_dir_obj);
1290	(void) printf("\t\tprev_snap_obj = %llu\n",
1291	    (u_longlong_t)ds->ds_prev_snap_obj);
1292	(void) printf("\t\tprev_snap_txg = %llu\n",
1293	    (u_longlong_t)ds->ds_prev_snap_txg);
1294	(void) printf("\t\tnext_snap_obj = %llu\n",
1295	    (u_longlong_t)ds->ds_next_snap_obj);
1296	(void) printf("\t\tsnapnames_zapobj = %llu\n",
1297	    (u_longlong_t)ds->ds_snapnames_zapobj);
1298	(void) printf("\t\tnum_children = %llu\n",
1299	    (u_longlong_t)ds->ds_num_children);
1300	(void) printf("\t\tuserrefs_obj = %llu\n",
1301	    (u_longlong_t)ds->ds_userrefs_obj);
1302	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1303	(void) printf("\t\tcreation_txg = %llu\n",
1304	    (u_longlong_t)ds->ds_creation_txg);
1305	(void) printf("\t\tdeadlist_obj = %llu\n",
1306	    (u_longlong_t)ds->ds_deadlist_obj);
1307	(void) printf("\t\tused_bytes = %s\n", used);
1308	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
1309	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1310	(void) printf("\t\tunique = %s\n", unique);
1311	(void) printf("\t\tfsid_guid = %llu\n",
1312	    (u_longlong_t)ds->ds_fsid_guid);
1313	(void) printf("\t\tguid = %llu\n",
1314	    (u_longlong_t)ds->ds_guid);
1315	(void) printf("\t\tflags = %llx\n",
1316	    (u_longlong_t)ds->ds_flags);
1317	(void) printf("\t\tnext_clones_obj = %llu\n",
1318	    (u_longlong_t)ds->ds_next_clones_obj);
1319	(void) printf("\t\tprops_obj = %llu\n",
1320	    (u_longlong_t)ds->ds_props_obj);
1321	(void) printf("\t\tbp = %s\n", blkbuf);
1322}
1323
1324/* ARGSUSED */
1325static int
1326dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1327{
1328	char blkbuf[BP_SPRINTF_LEN];
1329
1330	if (bp->blk_birth != 0) {
1331		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1332		(void) printf("\t%s\n", blkbuf);
1333	}
1334	return (0);
1335}
1336
1337static void
1338dump_bptree(objset_t *os, uint64_t obj, char *name)
1339{
1340	char bytes[32];
1341	bptree_phys_t *bt;
1342	dmu_buf_t *db;
1343
1344	if (dump_opt['d'] < 3)
1345		return;
1346
1347	VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1348	bt = db->db_data;
1349	zdb_nicenum(bt->bt_bytes, bytes);
1350	(void) printf("\n    %s: %llu datasets, %s\n",
1351	    name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1352	dmu_buf_rele(db, FTAG);
1353
1354	if (dump_opt['d'] < 5)
1355		return;
1356
1357	(void) printf("\n");
1358
1359	(void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1360}
1361
1362/* ARGSUSED */
1363static int
1364dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1365{
1366	char blkbuf[BP_SPRINTF_LEN];
1367
1368	ASSERT(bp->blk_birth != 0);
1369	snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1370	(void) printf("\t%s\n", blkbuf);
1371	return (0);
1372}
1373
1374static void
1375dump_bpobj(bpobj_t *bpo, char *name, int indent)
1376{
1377	char bytes[32];
1378	char comp[32];
1379	char uncomp[32];
1380
1381	if (dump_opt['d'] < 3)
1382		return;
1383
1384	zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1385	if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1386		zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1387		zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1388		(void) printf("    %*s: object %llu, %llu local blkptrs, "
1389		    "%llu subobjs, %s (%s/%s comp)\n",
1390		    indent * 8, name,
1391		    (u_longlong_t)bpo->bpo_object,
1392		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1393		    (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1394		    bytes, comp, uncomp);
1395
1396		for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1397			uint64_t subobj;
1398			bpobj_t subbpo;
1399			int error;
1400			VERIFY0(dmu_read(bpo->bpo_os,
1401			    bpo->bpo_phys->bpo_subobjs,
1402			    i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1403			error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1404			if (error != 0) {
1405				(void) printf("ERROR %u while trying to open "
1406				    "subobj id %llu\n",
1407				    error, (u_longlong_t)subobj);
1408				continue;
1409			}
1410			dump_bpobj(&subbpo, "subobj", indent + 1);
1411			bpobj_close(&subbpo);
1412		}
1413	} else {
1414		(void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1415		    indent * 8, name,
1416		    (u_longlong_t)bpo->bpo_object,
1417		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1418		    bytes);
1419	}
1420
1421	if (dump_opt['d'] < 5)
1422		return;
1423
1424
1425	if (indent == 0) {
1426		(void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1427		(void) printf("\n");
1428	}
1429}
1430
1431static void
1432dump_deadlist(dsl_deadlist_t *dl)
1433{
1434	dsl_deadlist_entry_t *dle;
1435	uint64_t unused;
1436	char bytes[32];
1437	char comp[32];
1438	char uncomp[32];
1439
1440	if (dump_opt['d'] < 3)
1441		return;
1442
1443	if (dl->dl_oldfmt) {
1444		dump_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1445		return;
1446	}
1447
1448	zdb_nicenum(dl->dl_phys->dl_used, bytes);
1449	zdb_nicenum(dl->dl_phys->dl_comp, comp);
1450	zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1451	(void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1452	    bytes, comp, uncomp);
1453
1454	if (dump_opt['d'] < 4)
1455		return;
1456
1457	(void) printf("\n");
1458
1459	/* force the tree to be loaded */
1460	dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1461
1462	for (dle = avl_first(&dl->dl_tree); dle;
1463	    dle = AVL_NEXT(&dl->dl_tree, dle)) {
1464		if (dump_opt['d'] >= 5) {
1465			char buf[128];
1466			(void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1467			    (longlong_t)dle->dle_mintxg,
1468			    (longlong_t)dle->dle_bpobj.bpo_object);
1469
1470			dump_bpobj(&dle->dle_bpobj, buf, 0);
1471		} else {
1472			(void) printf("mintxg %llu -> obj %llu\n",
1473			    (longlong_t)dle->dle_mintxg,
1474			    (longlong_t)dle->dle_bpobj.bpo_object);
1475
1476		}
1477	}
1478}
1479
1480static avl_tree_t idx_tree;
1481static avl_tree_t domain_tree;
1482static boolean_t fuid_table_loaded;
1483static boolean_t sa_loaded;
1484sa_attr_type_t *sa_attr_table;
1485
1486static void
1487fuid_table_destroy()
1488{
1489	if (fuid_table_loaded) {
1490		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1491		fuid_table_loaded = B_FALSE;
1492	}
1493}
1494
1495/*
1496 * print uid or gid information.
1497 * For normal POSIX id just the id is printed in decimal format.
1498 * For CIFS files with FUID the fuid is printed in hex followed by
1499 * the domain-rid string.
1500 */
1501static void
1502print_idstr(uint64_t id, const char *id_type)
1503{
1504	if (FUID_INDEX(id)) {
1505		char *domain;
1506
1507		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1508		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
1509		    (u_longlong_t)id, domain, (int)FUID_RID(id));
1510	} else {
1511		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1512	}
1513
1514}
1515
1516static void
1517dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1518{
1519	uint32_t uid_idx, gid_idx;
1520
1521	uid_idx = FUID_INDEX(uid);
1522	gid_idx = FUID_INDEX(gid);
1523
1524	/* Load domain table, if not already loaded */
1525	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1526		uint64_t fuid_obj;
1527
1528		/* first find the fuid object.  It lives in the master node */
1529		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1530		    8, 1, &fuid_obj) == 0);
1531		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1532		(void) zfs_fuid_table_load(os, fuid_obj,
1533		    &idx_tree, &domain_tree);
1534		fuid_table_loaded = B_TRUE;
1535	}
1536
1537	print_idstr(uid, "uid");
1538	print_idstr(gid, "gid");
1539}
1540
1541/*ARGSUSED*/
1542static void
1543dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1544{
1545	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
1546	sa_handle_t *hdl;
1547	uint64_t xattr, rdev, gen;
1548	uint64_t uid, gid, mode, fsize, parent, links;
1549	uint64_t pflags;
1550	uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1551	time_t z_crtime, z_atime, z_mtime, z_ctime;
1552	sa_bulk_attr_t bulk[12];
1553	int idx = 0;
1554	int error;
1555
1556	if (!sa_loaded) {
1557		uint64_t sa_attrs = 0;
1558		uint64_t version;
1559
1560		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1561		    8, 1, &version) == 0);
1562		if (version >= ZPL_VERSION_SA) {
1563			VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1564			    8, 1, &sa_attrs) == 0);
1565		}
1566		if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1567		    ZPL_END, &sa_attr_table)) != 0) {
1568			(void) printf("sa_setup failed errno %d, can't "
1569			    "display znode contents\n", error);
1570			return;
1571		}
1572		sa_loaded = B_TRUE;
1573	}
1574
1575	if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1576		(void) printf("Failed to get handle for SA znode\n");
1577		return;
1578	}
1579
1580	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1581	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1582	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1583	    &links, 8);
1584	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1585	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1586	    &mode, 8);
1587	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1588	    NULL, &parent, 8);
1589	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1590	    &fsize, 8);
1591	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1592	    acctm, 16);
1593	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1594	    modtm, 16);
1595	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1596	    crtm, 16);
1597	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1598	    chgtm, 16);
1599	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1600	    &pflags, 8);
1601
1602	if (sa_bulk_lookup(hdl, bulk, idx)) {
1603		(void) sa_handle_destroy(hdl);
1604		return;
1605	}
1606
1607	error = zfs_obj_to_path(os, object, path, sizeof (path));
1608	if (error != 0) {
1609		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1610		    (u_longlong_t)object);
1611	}
1612	if (dump_opt['d'] < 3) {
1613		(void) printf("\t%s\n", path);
1614		(void) sa_handle_destroy(hdl);
1615		return;
1616	}
1617
1618	z_crtime = (time_t)crtm[0];
1619	z_atime = (time_t)acctm[0];
1620	z_mtime = (time_t)modtm[0];
1621	z_ctime = (time_t)chgtm[0];
1622
1623	(void) printf("\tpath	%s\n", path);
1624	dump_uidgid(os, uid, gid);
1625	(void) printf("\tatime	%s", ctime(&z_atime));
1626	(void) printf("\tmtime	%s", ctime(&z_mtime));
1627	(void) printf("\tctime	%s", ctime(&z_ctime));
1628	(void) printf("\tcrtime	%s", ctime(&z_crtime));
1629	(void) printf("\tgen	%llu\n", (u_longlong_t)gen);
1630	(void) printf("\tmode	%llo\n", (u_longlong_t)mode);
1631	(void) printf("\tsize	%llu\n", (u_longlong_t)fsize);
1632	(void) printf("\tparent	%llu\n", (u_longlong_t)parent);
1633	(void) printf("\tlinks	%llu\n", (u_longlong_t)links);
1634	(void) printf("\tpflags	%llx\n", (u_longlong_t)pflags);
1635	if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1636	    sizeof (uint64_t)) == 0)
1637		(void) printf("\txattr	%llu\n", (u_longlong_t)xattr);
1638	if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1639	    sizeof (uint64_t)) == 0)
1640		(void) printf("\trdev	0x%016llx\n", (u_longlong_t)rdev);
1641	sa_handle_destroy(hdl);
1642}
1643
1644/*ARGSUSED*/
1645static void
1646dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1647{
1648}
1649
1650/*ARGSUSED*/
1651static void
1652dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1653{
1654}
1655
1656static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1657	dump_none,		/* unallocated			*/
1658	dump_zap,		/* object directory		*/
1659	dump_uint64,		/* object array			*/
1660	dump_none,		/* packed nvlist		*/
1661	dump_packed_nvlist,	/* packed nvlist size		*/
1662	dump_none,		/* bplist			*/
1663	dump_none,		/* bplist header		*/
1664	dump_none,		/* SPA space map header		*/
1665	dump_none,		/* SPA space map		*/
1666	dump_none,		/* ZIL intent log		*/
1667	dump_dnode,		/* DMU dnode			*/
1668	dump_dmu_objset,	/* DMU objset			*/
1669	dump_dsl_dir,		/* DSL directory		*/
1670	dump_zap,		/* DSL directory child map	*/
1671	dump_zap,		/* DSL dataset snap map		*/
1672	dump_zap,		/* DSL props			*/
1673	dump_dsl_dataset,	/* DSL dataset			*/
1674	dump_znode,		/* ZFS znode			*/
1675	dump_acl,		/* ZFS V0 ACL			*/
1676	dump_uint8,		/* ZFS plain file		*/
1677	dump_zpldir,		/* ZFS directory		*/
1678	dump_zap,		/* ZFS master node		*/
1679	dump_zap,		/* ZFS delete queue		*/
1680	dump_uint8,		/* zvol object			*/
1681	dump_zap,		/* zvol prop			*/
1682	dump_uint8,		/* other uint8[]		*/
1683	dump_uint64,		/* other uint64[]		*/
1684	dump_zap,		/* other ZAP			*/
1685	dump_zap,		/* persistent error log		*/
1686	dump_uint8,		/* SPA history			*/
1687	dump_history_offsets,	/* SPA history offsets		*/
1688	dump_zap,		/* Pool properties		*/
1689	dump_zap,		/* DSL permissions		*/
1690	dump_acl,		/* ZFS ACL			*/
1691	dump_uint8,		/* ZFS SYSACL			*/
1692	dump_none,		/* FUID nvlist			*/
1693	dump_packed_nvlist,	/* FUID nvlist size		*/
1694	dump_zap,		/* DSL dataset next clones	*/
1695	dump_zap,		/* DSL scrub queue		*/
1696	dump_zap,		/* ZFS user/group used		*/
1697	dump_zap,		/* ZFS user/group quota		*/
1698	dump_zap,		/* snapshot refcount tags	*/
1699	dump_ddt_zap,		/* DDT ZAP object		*/
1700	dump_zap,		/* DDT statistics		*/
1701	dump_znode,		/* SA object			*/
1702	dump_zap,		/* SA Master Node		*/
1703	dump_sa_attrs,		/* SA attribute registration	*/
1704	dump_sa_layouts,	/* SA attribute layouts		*/
1705	dump_zap,		/* DSL scrub translations	*/
1706	dump_none,		/* fake dedup BP		*/
1707	dump_zap,		/* deadlist			*/
1708	dump_none,		/* deadlist hdr			*/
1709	dump_zap,		/* dsl clones			*/
1710	dump_none,		/* bpobj subobjs		*/
1711	dump_unknown,		/* Unknown type, must be last	*/
1712};
1713
1714static void
1715dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1716{
1717	dmu_buf_t *db = NULL;
1718	dmu_object_info_t doi;
1719	dnode_t *dn;
1720	void *bonus = NULL;
1721	size_t bsize = 0;
1722	char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1723	char bonus_size[32];
1724	char aux[50];
1725	int error;
1726
1727	if (*print_header) {
1728		(void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1729		    "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1730		    "%full", "type");
1731		*print_header = 0;
1732	}
1733
1734	if (object == 0) {
1735		dn = DMU_META_DNODE(os);
1736	} else {
1737		error = dmu_bonus_hold(os, object, FTAG, &db);
1738		if (error)
1739			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1740			    object, error);
1741		bonus = db->db_data;
1742		bsize = db->db_size;
1743		dn = DB_DNODE((dmu_buf_impl_t *)db);
1744	}
1745	dmu_object_info_from_dnode(dn, &doi);
1746
1747	zdb_nicenum(doi.doi_metadata_block_size, iblk);
1748	zdb_nicenum(doi.doi_data_block_size, dblk);
1749	zdb_nicenum(doi.doi_max_offset, lsize);
1750	zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1751	zdb_nicenum(doi.doi_bonus_size, bonus_size);
1752	(void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1753	    doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1754	    doi.doi_max_offset);
1755
1756	aux[0] = '\0';
1757
1758	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1759		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1760		    ZDB_CHECKSUM_NAME(doi.doi_checksum));
1761	}
1762
1763	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1764		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1765		    ZDB_COMPRESS_NAME(doi.doi_compress));
1766	}
1767
1768	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1769	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1770	    asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1771
1772	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1773		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1774		    "", "", "", "", "", bonus_size, "bonus",
1775		    ZDB_OT_NAME(doi.doi_bonus_type));
1776	}
1777
1778	if (verbosity >= 4) {
1779		(void) printf("\tdnode flags: %s%s%s\n",
1780		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1781		    "USED_BYTES " : "",
1782		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1783		    "USERUSED_ACCOUNTED " : "",
1784		    (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1785		    "SPILL_BLKPTR" : "");
1786		(void) printf("\tdnode maxblkid: %llu\n",
1787		    (longlong_t)dn->dn_phys->dn_maxblkid);
1788
1789		object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1790		    bonus, bsize);
1791		object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1792		*print_header = 1;
1793	}
1794
1795	if (verbosity >= 5)
1796		dump_indirect(dn);
1797
1798	if (verbosity >= 5) {
1799		/*
1800		 * Report the list of segments that comprise the object.
1801		 */
1802		uint64_t start = 0;
1803		uint64_t end;
1804		uint64_t blkfill = 1;
1805		int minlvl = 1;
1806
1807		if (dn->dn_type == DMU_OT_DNODE) {
1808			minlvl = 0;
1809			blkfill = DNODES_PER_BLOCK;
1810		}
1811
1812		for (;;) {
1813			char segsize[32];
1814			error = dnode_next_offset(dn,
1815			    0, &start, minlvl, blkfill, 0);
1816			if (error)
1817				break;
1818			end = start;
1819			error = dnode_next_offset(dn,
1820			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1821			zdb_nicenum(end - start, segsize);
1822			(void) printf("\t\tsegment [%016llx, %016llx)"
1823			    " size %5s\n", (u_longlong_t)start,
1824			    (u_longlong_t)end, segsize);
1825			if (error)
1826				break;
1827			start = end;
1828		}
1829	}
1830
1831	if (db != NULL)
1832		dmu_buf_rele(db, FTAG);
1833}
1834
1835static char *objset_types[DMU_OST_NUMTYPES] = {
1836	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1837
1838static void
1839dump_dir(objset_t *os)
1840{
1841	dmu_objset_stats_t dds;
1842	uint64_t object, object_count;
1843	uint64_t refdbytes, usedobjs, scratch;
1844	char numbuf[32];
1845	char blkbuf[BP_SPRINTF_LEN + 20];
1846	char osname[MAXNAMELEN];
1847	char *type = "UNKNOWN";
1848	int verbosity = dump_opt['d'];
1849	int print_header = 1;
1850	int i, error;
1851
1852	dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1853	dmu_objset_fast_stat(os, &dds);
1854	dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1855
1856	if (dds.dds_type < DMU_OST_NUMTYPES)
1857		type = objset_types[dds.dds_type];
1858
1859	if (dds.dds_type == DMU_OST_META) {
1860		dds.dds_creation_txg = TXG_INITIAL;
1861		usedobjs = BP_GET_FILL(os->os_rootbp);
1862		refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
1863		    dd_used_bytes;
1864	} else {
1865		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1866	}
1867
1868	ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
1869
1870	zdb_nicenum(refdbytes, numbuf);
1871
1872	if (verbosity >= 4) {
1873		(void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1874		(void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1875		    sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1876	} else {
1877		blkbuf[0] = '\0';
1878	}
1879
1880	dmu_objset_name(os, osname);
1881
1882	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1883	    "%s, %llu objects%s\n",
1884	    osname, type, (u_longlong_t)dmu_objset_id(os),
1885	    (u_longlong_t)dds.dds_creation_txg,
1886	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1887
1888	if (zopt_objects != 0) {
1889		for (i = 0; i < zopt_objects; i++)
1890			dump_object(os, zopt_object[i], verbosity,
1891			    &print_header);
1892		(void) printf("\n");
1893		return;
1894	}
1895
1896	if (dump_opt['i'] != 0 || verbosity >= 2)
1897		dump_intent_log(dmu_objset_zil(os));
1898
1899	if (dmu_objset_ds(os) != NULL)
1900		dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1901
1902	if (verbosity < 2)
1903		return;
1904
1905	if (BP_IS_HOLE(os->os_rootbp))
1906		return;
1907
1908	dump_object(os, 0, verbosity, &print_header);
1909	object_count = 0;
1910	if (DMU_USERUSED_DNODE(os) != NULL &&
1911	    DMU_USERUSED_DNODE(os)->dn_type != 0) {
1912		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1913		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1914	}
1915
1916	object = 0;
1917	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1918		dump_object(os, object, verbosity, &print_header);
1919		object_count++;
1920	}
1921
1922	ASSERT3U(object_count, ==, usedobjs);
1923
1924	(void) printf("\n");
1925
1926	if (error != ESRCH) {
1927		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1928		abort();
1929	}
1930}
1931
1932static void
1933dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1934{
1935	time_t timestamp = ub->ub_timestamp;
1936
1937	(void) printf(header ? header : "");
1938	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1939	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1940	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1941	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1942	(void) printf("\ttimestamp = %llu UTC = %s",
1943	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1944	if (dump_opt['u'] >= 3) {
1945		char blkbuf[BP_SPRINTF_LEN];
1946		snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
1947		(void) printf("\trootbp = %s\n", blkbuf);
1948	}
1949	(void) printf(footer ? footer : "");
1950}
1951
1952static void
1953dump_config(spa_t *spa)
1954{
1955	dmu_buf_t *db;
1956	size_t nvsize = 0;
1957	int error = 0;
1958
1959
1960	error = dmu_bonus_hold(spa->spa_meta_objset,
1961	    spa->spa_config_object, FTAG, &db);
1962
1963	if (error == 0) {
1964		nvsize = *(uint64_t *)db->db_data;
1965		dmu_buf_rele(db, FTAG);
1966
1967		(void) printf("\nMOS Configuration:\n");
1968		dump_packed_nvlist(spa->spa_meta_objset,
1969		    spa->spa_config_object, (void *)&nvsize, 1);
1970	} else {
1971		(void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1972		    (u_longlong_t)spa->spa_config_object, error);
1973	}
1974}
1975
1976static void
1977dump_cachefile(const char *cachefile)
1978{
1979	int fd;
1980	struct stat64 statbuf;
1981	char *buf;
1982	nvlist_t *config;
1983
1984	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1985		(void) printf("cannot open '%s': %s\n", cachefile,
1986		    strerror(errno));
1987		exit(1);
1988	}
1989
1990	if (fstat64(fd, &statbuf) != 0) {
1991		(void) printf("failed to stat '%s': %s\n", cachefile,
1992		    strerror(errno));
1993		exit(1);
1994	}
1995
1996	if ((buf = malloc(statbuf.st_size)) == NULL) {
1997		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1998		    (u_longlong_t)statbuf.st_size);
1999		exit(1);
2000	}
2001
2002	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2003		(void) fprintf(stderr, "failed to read %llu bytes\n",
2004		    (u_longlong_t)statbuf.st_size);
2005		exit(1);
2006	}
2007
2008	(void) close(fd);
2009
2010	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2011		(void) fprintf(stderr, "failed to unpack nvlist\n");
2012		exit(1);
2013	}
2014
2015	free(buf);
2016
2017	dump_nvlist(config, 0);
2018
2019	nvlist_free(config);
2020}
2021
2022#define	ZDB_MAX_UB_HEADER_SIZE 32
2023
2024static void
2025dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
2026{
2027	vdev_t vd;
2028	vdev_t *vdp = &vd;
2029	char header[ZDB_MAX_UB_HEADER_SIZE];
2030
2031	vd.vdev_ashift = ashift;
2032	vdp->vdev_top = vdp;
2033
2034	for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2035		uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2036		uberblock_t *ub = (void *)((char *)lbl + uoff);
2037
2038		if (uberblock_verify(ub))
2039			continue;
2040		(void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2041		    "Uberblock[%d]\n", i);
2042		dump_uberblock(ub, header, "");
2043	}
2044}
2045
2046static void
2047dump_label(const char *dev)
2048{
2049	int fd;
2050	vdev_label_t label;
2051	char *path, *buf = label.vl_vdev_phys.vp_nvlist;
2052	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2053	struct stat64 statbuf;
2054	uint64_t psize, ashift;
2055	int len = strlen(dev) + 1;
2056
2057	if (strncmp(dev, "/dev/dsk/", 9) == 0) {
2058		len++;
2059		path = malloc(len);
2060		(void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
2061	} else {
2062		path = strdup(dev);
2063	}
2064
2065	if ((fd = open64(path, O_RDONLY)) < 0) {
2066		(void) printf("cannot open '%s': %s\n", path, strerror(errno));
2067		free(path);
2068		exit(1);
2069	}
2070
2071	if (fstat64(fd, &statbuf) != 0) {
2072		(void) printf("failed to stat '%s': %s\n", path,
2073		    strerror(errno));
2074		free(path);
2075		(void) close(fd);
2076		exit(1);
2077	}
2078
2079	if (S_ISBLK(statbuf.st_mode)) {
2080		(void) printf("cannot use '%s': character device required\n",
2081		    path);
2082		free(path);
2083		(void) close(fd);
2084		exit(1);
2085	}
2086
2087	psize = statbuf.st_size;
2088	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2089
2090	for (int l = 0; l < VDEV_LABELS; l++) {
2091		nvlist_t *config = NULL;
2092
2093		(void) printf("--------------------------------------------\n");
2094		(void) printf("LABEL %d\n", l);
2095		(void) printf("--------------------------------------------\n");
2096
2097		if (pread64(fd, &label, sizeof (label),
2098		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2099			(void) printf("failed to read label %d\n", l);
2100			continue;
2101		}
2102
2103		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2104			(void) printf("failed to unpack label %d\n", l);
2105			ashift = SPA_MINBLOCKSHIFT;
2106		} else {
2107			nvlist_t *vdev_tree = NULL;
2108
2109			dump_nvlist(config, 4);
2110			if ((nvlist_lookup_nvlist(config,
2111			    ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2112			    (nvlist_lookup_uint64(vdev_tree,
2113			    ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2114				ashift = SPA_MINBLOCKSHIFT;
2115			nvlist_free(config);
2116		}
2117		if (dump_opt['u'])
2118			dump_label_uberblocks(&label, ashift);
2119	}
2120
2121	free(path);
2122	(void) close(fd);
2123}
2124
2125static uint64_t num_large_blocks;
2126
2127/*ARGSUSED*/
2128static int
2129dump_one_dir(const char *dsname, void *arg)
2130{
2131	int error;
2132	objset_t *os;
2133
2134	error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2135	if (error) {
2136		(void) printf("Could not open %s, error %d\n", dsname, error);
2137		return (0);
2138	}
2139	if (dmu_objset_ds(os)->ds_large_blocks)
2140		num_large_blocks++;
2141	dump_dir(os);
2142	dmu_objset_disown(os, FTAG);
2143	fuid_table_destroy();
2144	sa_loaded = B_FALSE;
2145	return (0);
2146}
2147
2148/*
2149 * Block statistics.
2150 */
2151#define	PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2152typedef struct zdb_blkstats {
2153	uint64_t zb_asize;
2154	uint64_t zb_lsize;
2155	uint64_t zb_psize;
2156	uint64_t zb_count;
2157	uint64_t zb_gangs;
2158	uint64_t zb_ditto_samevdev;
2159	uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2160} zdb_blkstats_t;
2161
2162/*
2163 * Extended object types to report deferred frees and dedup auto-ditto blocks.
2164 */
2165#define	ZDB_OT_DEFERRED	(DMU_OT_NUMTYPES + 0)
2166#define	ZDB_OT_DITTO	(DMU_OT_NUMTYPES + 1)
2167#define	ZDB_OT_OTHER	(DMU_OT_NUMTYPES + 2)
2168#define	ZDB_OT_TOTAL	(DMU_OT_NUMTYPES + 3)
2169
2170static char *zdb_ot_extname[] = {
2171	"deferred free",
2172	"dedup ditto",
2173	"other",
2174	"Total",
2175};
2176
2177#define	ZB_TOTAL	DN_MAX_LEVELS
2178
2179typedef struct zdb_cb {
2180	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2181	uint64_t	zcb_dedup_asize;
2182	uint64_t	zcb_dedup_blocks;
2183	uint64_t	zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2184	uint64_t	zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2185	    [BPE_PAYLOAD_SIZE];
2186	uint64_t	zcb_start;
2187	uint64_t	zcb_lastprint;
2188	uint64_t	zcb_totalasize;
2189	uint64_t	zcb_errors[256];
2190	int		zcb_readfails;
2191	int		zcb_haderrors;
2192	spa_t		*zcb_spa;
2193} zdb_cb_t;
2194
2195static void
2196zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2197    dmu_object_type_t type)
2198{
2199	uint64_t refcnt = 0;
2200
2201	ASSERT(type < ZDB_OT_TOTAL);
2202
2203	if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2204		return;
2205
2206	for (int i = 0; i < 4; i++) {
2207		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2208		int t = (i & 1) ? type : ZDB_OT_TOTAL;
2209		int equal;
2210		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2211
2212		zb->zb_asize += BP_GET_ASIZE(bp);
2213		zb->zb_lsize += BP_GET_LSIZE(bp);
2214		zb->zb_psize += BP_GET_PSIZE(bp);
2215		zb->zb_count++;
2216
2217		/*
2218		 * The histogram is only big enough to record blocks up to
2219		 * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2220		 * "other", bucket.
2221		 */
2222		int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2223		idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2224		zb->zb_psize_histogram[idx]++;
2225
2226		zb->zb_gangs += BP_COUNT_GANG(bp);
2227
2228		switch (BP_GET_NDVAS(bp)) {
2229		case 2:
2230			if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2231			    DVA_GET_VDEV(&bp->blk_dva[1]))
2232				zb->zb_ditto_samevdev++;
2233			break;
2234		case 3:
2235			equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2236			    DVA_GET_VDEV(&bp->blk_dva[1])) +
2237			    (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2238			    DVA_GET_VDEV(&bp->blk_dva[2])) +
2239			    (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2240			    DVA_GET_VDEV(&bp->blk_dva[2]));
2241			if (equal != 0)
2242				zb->zb_ditto_samevdev++;
2243			break;
2244		}
2245
2246	}
2247
2248	if (BP_IS_EMBEDDED(bp)) {
2249		zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2250		zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2251		    [BPE_GET_PSIZE(bp)]++;
2252		return;
2253	}
2254
2255	if (dump_opt['L'])
2256		return;
2257
2258	if (BP_GET_DEDUP(bp)) {
2259		ddt_t *ddt;
2260		ddt_entry_t *dde;
2261
2262		ddt = ddt_select(zcb->zcb_spa, bp);
2263		ddt_enter(ddt);
2264		dde = ddt_lookup(ddt, bp, B_FALSE);
2265
2266		if (dde == NULL) {
2267			refcnt = 0;
2268		} else {
2269			ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2270			ddt_phys_decref(ddp);
2271			refcnt = ddp->ddp_refcnt;
2272			if (ddt_phys_total_refcnt(dde) == 0)
2273				ddt_remove(ddt, dde);
2274		}
2275		ddt_exit(ddt);
2276	}
2277
2278	VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2279	    refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2280	    bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2281}
2282
2283static void
2284zdb_blkptr_done(zio_t *zio)
2285{
2286	spa_t *spa = zio->io_spa;
2287	blkptr_t *bp = zio->io_bp;
2288	int ioerr = zio->io_error;
2289	zdb_cb_t *zcb = zio->io_private;
2290	zbookmark_phys_t *zb = &zio->io_bookmark;
2291
2292	zio_data_buf_free(zio->io_data, zio->io_size);
2293
2294	mutex_enter(&spa->spa_scrub_lock);
2295	spa->spa_scrub_inflight--;
2296	cv_broadcast(&spa->spa_scrub_io_cv);
2297
2298	if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2299		char blkbuf[BP_SPRINTF_LEN];
2300
2301		zcb->zcb_haderrors = 1;
2302		zcb->zcb_errors[ioerr]++;
2303
2304		if (dump_opt['b'] >= 2)
2305			snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2306		else
2307			blkbuf[0] = '\0';
2308
2309		(void) printf("zdb_blkptr_cb: "
2310		    "Got error %d reading "
2311		    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2312		    ioerr,
2313		    (u_longlong_t)zb->zb_objset,
2314		    (u_longlong_t)zb->zb_object,
2315		    (u_longlong_t)zb->zb_level,
2316		    (u_longlong_t)zb->zb_blkid,
2317		    blkbuf);
2318	}
2319	mutex_exit(&spa->spa_scrub_lock);
2320}
2321
2322static int
2323zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2324    const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2325{
2326	zdb_cb_t *zcb = arg;
2327	dmu_object_type_t type;
2328	boolean_t is_metadata;
2329
2330	if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2331		char blkbuf[BP_SPRINTF_LEN];
2332		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2333		(void) printf("objset %llu object %llu "
2334		    "level %lld offset 0x%llx %s\n",
2335		    (u_longlong_t)zb->zb_objset,
2336		    (u_longlong_t)zb->zb_object,
2337		    (longlong_t)zb->zb_level,
2338		    (u_longlong_t)blkid2offset(dnp, bp, zb),
2339		    blkbuf);
2340	}
2341
2342	if (BP_IS_HOLE(bp))
2343		return (0);
2344
2345	type = BP_GET_TYPE(bp);
2346
2347	zdb_count_block(zcb, zilog, bp,
2348	    (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2349
2350	is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2351
2352	if (!BP_IS_EMBEDDED(bp) &&
2353	    (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2354		size_t size = BP_GET_PSIZE(bp);
2355		void *data = zio_data_buf_alloc(size);
2356		int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2357
2358		/* If it's an intent log block, failure is expected. */
2359		if (zb->zb_level == ZB_ZIL_LEVEL)
2360			flags |= ZIO_FLAG_SPECULATIVE;
2361
2362		mutex_enter(&spa->spa_scrub_lock);
2363		while (spa->spa_scrub_inflight > max_inflight)
2364			cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2365		spa->spa_scrub_inflight++;
2366		mutex_exit(&spa->spa_scrub_lock);
2367
2368		zio_nowait(zio_read(NULL, spa, bp, data, size,
2369		    zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2370	}
2371
2372	zcb->zcb_readfails = 0;
2373
2374	/* only call gethrtime() every 100 blocks */
2375	static int iters;
2376	if (++iters > 100)
2377		iters = 0;
2378	else
2379		return (0);
2380
2381	if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2382		uint64_t now = gethrtime();
2383		char buf[10];
2384		uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2385		int kb_per_sec =
2386		    1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2387		int sec_remaining =
2388		    (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2389
2390		zfs_nicenum(bytes, buf, sizeof (buf));
2391		(void) fprintf(stderr,
2392		    "\r%5s completed (%4dMB/s) "
2393		    "estimated time remaining: %uhr %02umin %02usec        ",
2394		    buf, kb_per_sec / 1024,
2395		    sec_remaining / 60 / 60,
2396		    sec_remaining / 60 % 60,
2397		    sec_remaining % 60);
2398
2399		zcb->zcb_lastprint = now;
2400	}
2401
2402	return (0);
2403}
2404
2405static void
2406zdb_leak(void *arg, uint64_t start, uint64_t size)
2407{
2408	vdev_t *vd = arg;
2409
2410	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2411	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2412}
2413
2414static metaslab_ops_t zdb_metaslab_ops = {
2415	NULL	/* alloc */
2416};
2417
2418static void
2419zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2420{
2421	ddt_bookmark_t ddb = { 0 };
2422	ddt_entry_t dde;
2423	int error;
2424
2425	while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2426		blkptr_t blk;
2427		ddt_phys_t *ddp = dde.dde_phys;
2428
2429		if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2430			return;
2431
2432		ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2433
2434		for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2435			if (ddp->ddp_phys_birth == 0)
2436				continue;
2437			ddt_bp_create(ddb.ddb_checksum,
2438			    &dde.dde_key, ddp, &blk);
2439			if (p == DDT_PHYS_DITTO) {
2440				zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2441			} else {
2442				zcb->zcb_dedup_asize +=
2443				    BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2444				zcb->zcb_dedup_blocks++;
2445			}
2446		}
2447		if (!dump_opt['L']) {
2448			ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2449			ddt_enter(ddt);
2450			VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2451			ddt_exit(ddt);
2452		}
2453	}
2454
2455	ASSERT(error == ENOENT);
2456}
2457
2458static void
2459zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2460{
2461	zcb->zcb_spa = spa;
2462
2463	if (!dump_opt['L']) {
2464		vdev_t *rvd = spa->spa_root_vdev;
2465		for (uint64_t c = 0; c < rvd->vdev_children; c++) {
2466			vdev_t *vd = rvd->vdev_child[c];
2467			for (uint64_t m = 0; m < vd->vdev_ms_count; m++) {
2468				metaslab_t *msp = vd->vdev_ms[m];
2469				mutex_enter(&msp->ms_lock);
2470				metaslab_unload(msp);
2471
2472				/*
2473				 * For leak detection, we overload the metaslab
2474				 * ms_tree to contain allocated segments
2475				 * instead of free segments. As a result,
2476				 * we can't use the normal metaslab_load/unload
2477				 * interfaces.
2478				 */
2479				if (msp->ms_sm != NULL) {
2480					(void) fprintf(stderr,
2481					    "\rloading space map for "
2482					    "vdev %llu of %llu, "
2483					    "metaslab %llu of %llu ...",
2484					    (longlong_t)c,
2485					    (longlong_t)rvd->vdev_children,
2486					    (longlong_t)m,
2487					    (longlong_t)vd->vdev_ms_count);
2488
2489					msp->ms_ops = &zdb_metaslab_ops;
2490
2491					/*
2492					 * We don't want to spend the CPU
2493					 * manipulating the size-ordered
2494					 * tree, so clear the range_tree
2495					 * ops.
2496					 */
2497					msp->ms_tree->rt_ops = NULL;
2498					VERIFY0(space_map_load(msp->ms_sm,
2499					    msp->ms_tree, SM_ALLOC));
2500					msp->ms_loaded = B_TRUE;
2501				}
2502				mutex_exit(&msp->ms_lock);
2503			}
2504		}
2505		(void) fprintf(stderr, "\n");
2506	}
2507
2508	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2509
2510	zdb_ddt_leak_init(spa, zcb);
2511
2512	spa_config_exit(spa, SCL_CONFIG, FTAG);
2513}
2514
2515static void
2516zdb_leak_fini(spa_t *spa)
2517{
2518	if (!dump_opt['L']) {
2519		vdev_t *rvd = spa->spa_root_vdev;
2520		for (int c = 0; c < rvd->vdev_children; c++) {
2521			vdev_t *vd = rvd->vdev_child[c];
2522			for (int m = 0; m < vd->vdev_ms_count; m++) {
2523				metaslab_t *msp = vd->vdev_ms[m];
2524				mutex_enter(&msp->ms_lock);
2525
2526				/*
2527				 * The ms_tree has been overloaded to
2528				 * contain allocated segments. Now that we
2529				 * finished traversing all blocks, any
2530				 * block that remains in the ms_tree
2531				 * represents an allocated block that we
2532				 * did not claim during the traversal.
2533				 * Claimed blocks would have been removed
2534				 * from the ms_tree.
2535				 */
2536				range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2537				msp->ms_loaded = B_FALSE;
2538
2539				mutex_exit(&msp->ms_lock);
2540			}
2541		}
2542	}
2543}
2544
2545/* ARGSUSED */
2546static int
2547count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2548{
2549	zdb_cb_t *zcb = arg;
2550
2551	if (dump_opt['b'] >= 5) {
2552		char blkbuf[BP_SPRINTF_LEN];
2553		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2554		(void) printf("[%s] %s\n",
2555		    "deferred free", blkbuf);
2556	}
2557	zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2558	return (0);
2559}
2560
2561static int
2562dump_block_stats(spa_t *spa)
2563{
2564	zdb_cb_t zcb = { 0 };
2565	zdb_blkstats_t *zb, *tzb;
2566	uint64_t norm_alloc, norm_space, total_alloc, total_found;
2567	int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2568	boolean_t leaks = B_FALSE;
2569
2570	(void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2571	    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2572	    (dump_opt['c'] == 1) ? "metadata " : "",
2573	    dump_opt['c'] ? "checksums " : "",
2574	    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2575	    !dump_opt['L'] ? "nothing leaked " : "");
2576
2577	/*
2578	 * Load all space maps as SM_ALLOC maps, then traverse the pool
2579	 * claiming each block we discover.  If the pool is perfectly
2580	 * consistent, the space maps will be empty when we're done.
2581	 * Anything left over is a leak; any block we can't claim (because
2582	 * it's not part of any space map) is a double allocation,
2583	 * reference to a freed block, or an unclaimed log block.
2584	 */
2585	zdb_leak_init(spa, &zcb);
2586
2587	/*
2588	 * If there's a deferred-free bplist, process that first.
2589	 */
2590	(void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2591	    count_block_cb, &zcb, NULL);
2592	if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2593		(void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2594		    count_block_cb, &zcb, NULL);
2595	}
2596	if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2597		VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2598		    spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2599		    &zcb, NULL));
2600	}
2601
2602	if (dump_opt['c'] > 1)
2603		flags |= TRAVERSE_PREFETCH_DATA;
2604
2605	zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2606	zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2607	zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2608
2609	/*
2610	 * If we've traversed the data blocks then we need to wait for those
2611	 * I/Os to complete. We leverage "The Godfather" zio to wait on
2612	 * all async I/Os to complete.
2613	 */
2614	if (dump_opt['c']) {
2615		for (int i = 0; i < max_ncpus; i++) {
2616			(void) zio_wait(spa->spa_async_zio_root[i]);
2617			spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
2618			    ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2619			    ZIO_FLAG_GODFATHER);
2620		}
2621	}
2622
2623	if (zcb.zcb_haderrors) {
2624		(void) printf("\nError counts:\n\n");
2625		(void) printf("\t%5s  %s\n", "errno", "count");
2626		for (int e = 0; e < 256; e++) {
2627			if (zcb.zcb_errors[e] != 0) {
2628				(void) printf("\t%5d  %llu\n",
2629				    e, (u_longlong_t)zcb.zcb_errors[e]);
2630			}
2631		}
2632	}
2633
2634	/*
2635	 * Report any leaked segments.
2636	 */
2637	zdb_leak_fini(spa);
2638
2639	tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2640
2641	norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2642	norm_space = metaslab_class_get_space(spa_normal_class(spa));
2643
2644	total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2645	total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2646
2647	if (total_found == total_alloc) {
2648		if (!dump_opt['L'])
2649			(void) printf("\n\tNo leaks (block sum matches space"
2650			    " maps exactly)\n");
2651	} else {
2652		(void) printf("block traversal size %llu != alloc %llu "
2653		    "(%s %lld)\n",
2654		    (u_longlong_t)total_found,
2655		    (u_longlong_t)total_alloc,
2656		    (dump_opt['L']) ? "unreachable" : "leaked",
2657		    (longlong_t)(total_alloc - total_found));
2658		leaks = B_TRUE;
2659	}
2660
2661	if (tzb->zb_count == 0)
2662		return (2);
2663
2664	(void) printf("\n");
2665	(void) printf("\tbp count:      %10llu\n",
2666	    (u_longlong_t)tzb->zb_count);
2667	(void) printf("\tganged count:  %10llu\n",
2668	    (longlong_t)tzb->zb_gangs);
2669	(void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2670	    (u_longlong_t)tzb->zb_lsize,
2671	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2672	(void) printf("\tbp physical:   %10llu      avg:"
2673	    " %6llu     compression: %6.2f\n",
2674	    (u_longlong_t)tzb->zb_psize,
2675	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2676	    (double)tzb->zb_lsize / tzb->zb_psize);
2677	(void) printf("\tbp allocated:  %10llu      avg:"
2678	    " %6llu     compression: %6.2f\n",
2679	    (u_longlong_t)tzb->zb_asize,
2680	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2681	    (double)tzb->zb_lsize / tzb->zb_asize);
2682	(void) printf("\tbp deduped:    %10llu    ref>1:"
2683	    " %6llu   deduplication: %6.2f\n",
2684	    (u_longlong_t)zcb.zcb_dedup_asize,
2685	    (u_longlong_t)zcb.zcb_dedup_blocks,
2686	    (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2687	(void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2688	    (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2689
2690	for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2691		if (zcb.zcb_embedded_blocks[i] == 0)
2692			continue;
2693		(void) printf("\n");
2694		(void) printf("\tadditional, non-pointer bps of type %u: "
2695		    "%10llu\n",
2696		    i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2697
2698		if (dump_opt['b'] >= 3) {
2699			(void) printf("\t number of (compressed) bytes:  "
2700			    "number of bps\n");
2701			dump_histogram(zcb.zcb_embedded_histogram[i],
2702			    sizeof (zcb.zcb_embedded_histogram[i]) /
2703			    sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
2704		}
2705	}
2706
2707	if (tzb->zb_ditto_samevdev != 0) {
2708		(void) printf("\tDittoed blocks on same vdev: %llu\n",
2709		    (longlong_t)tzb->zb_ditto_samevdev);
2710	}
2711
2712	if (dump_opt['b'] >= 2) {
2713		int l, t, level;
2714		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2715		    "\t  avg\t comp\t%%Total\tType\n");
2716
2717		for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2718			char csize[32], lsize[32], psize[32], asize[32];
2719			char avg[32], gang[32];
2720			char *typename;
2721
2722			if (t < DMU_OT_NUMTYPES)
2723				typename = dmu_ot[t].ot_name;
2724			else
2725				typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2726
2727			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2728				(void) printf("%6s\t%5s\t%5s\t%5s"
2729				    "\t%5s\t%5s\t%6s\t%s\n",
2730				    "-",
2731				    "-",
2732				    "-",
2733				    "-",
2734				    "-",
2735				    "-",
2736				    "-",
2737				    typename);
2738				continue;
2739			}
2740
2741			for (l = ZB_TOTAL - 1; l >= -1; l--) {
2742				level = (l == -1 ? ZB_TOTAL : l);
2743				zb = &zcb.zcb_type[level][t];
2744
2745				if (zb->zb_asize == 0)
2746					continue;
2747
2748				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2749					continue;
2750
2751				if (level == 0 && zb->zb_asize ==
2752				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2753					continue;
2754
2755				zdb_nicenum(zb->zb_count, csize);
2756				zdb_nicenum(zb->zb_lsize, lsize);
2757				zdb_nicenum(zb->zb_psize, psize);
2758				zdb_nicenum(zb->zb_asize, asize);
2759				zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2760				zdb_nicenum(zb->zb_gangs, gang);
2761
2762				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2763				    "\t%5.2f\t%6.2f\t",
2764				    csize, lsize, psize, asize, avg,
2765				    (double)zb->zb_lsize / zb->zb_psize,
2766				    100.0 * zb->zb_asize / tzb->zb_asize);
2767
2768				if (level == ZB_TOTAL)
2769					(void) printf("%s\n", typename);
2770				else
2771					(void) printf("    L%d %s\n",
2772					    level, typename);
2773
2774				if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2775					(void) printf("\t number of ganged "
2776					    "blocks: %s\n", gang);
2777				}
2778
2779				if (dump_opt['b'] >= 4) {
2780					(void) printf("psize "
2781					    "(in 512-byte sectors): "
2782					    "number of blocks\n");
2783					dump_histogram(zb->zb_psize_histogram,
2784					    PSIZE_HISTO_SIZE, 0);
2785				}
2786			}
2787		}
2788	}
2789
2790	(void) printf("\n");
2791
2792	if (leaks)
2793		return (2);
2794
2795	if (zcb.zcb_haderrors)
2796		return (3);
2797
2798	return (0);
2799}
2800
2801typedef struct zdb_ddt_entry {
2802	ddt_key_t	zdde_key;
2803	uint64_t	zdde_ref_blocks;
2804	uint64_t	zdde_ref_lsize;
2805	uint64_t	zdde_ref_psize;
2806	uint64_t	zdde_ref_dsize;
2807	avl_node_t	zdde_node;
2808} zdb_ddt_entry_t;
2809
2810/* ARGSUSED */
2811static int
2812zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2813    const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2814{
2815	avl_tree_t *t = arg;
2816	avl_index_t where;
2817	zdb_ddt_entry_t *zdde, zdde_search;
2818
2819	if (BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
2820		return (0);
2821
2822	if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2823		(void) printf("traversing objset %llu, %llu objects, "
2824		    "%lu blocks so far\n",
2825		    (u_longlong_t)zb->zb_objset,
2826		    (u_longlong_t)BP_GET_FILL(bp),
2827		    avl_numnodes(t));
2828	}
2829
2830	if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2831	    BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2832		return (0);
2833
2834	ddt_key_fill(&zdde_search.zdde_key, bp);
2835
2836	zdde = avl_find(t, &zdde_search, &where);
2837
2838	if (zdde == NULL) {
2839		zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2840		zdde->zdde_key = zdde_search.zdde_key;
2841		avl_insert(t, zdde, where);
2842	}
2843
2844	zdde->zdde_ref_blocks += 1;
2845	zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2846	zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2847	zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2848
2849	return (0);
2850}
2851
2852static void
2853dump_simulated_ddt(spa_t *spa)
2854{
2855	avl_tree_t t;
2856	void *cookie = NULL;
2857	zdb_ddt_entry_t *zdde;
2858	ddt_histogram_t ddh_total = { 0 };
2859	ddt_stat_t dds_total = { 0 };
2860
2861	avl_create(&t, ddt_entry_compare,
2862	    sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2863
2864	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2865
2866	(void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2867	    zdb_ddt_add_cb, &t);
2868
2869	spa_config_exit(spa, SCL_CONFIG, FTAG);
2870
2871	while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2872		ddt_stat_t dds;
2873		uint64_t refcnt = zdde->zdde_ref_blocks;
2874		ASSERT(refcnt != 0);
2875
2876		dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2877		dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2878		dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2879		dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2880
2881		dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2882		dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2883		dds.dds_ref_psize = zdde->zdde_ref_psize;
2884		dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2885
2886		ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
2887		    &dds, 0);
2888
2889		umem_free(zdde, sizeof (*zdde));
2890	}
2891
2892	avl_destroy(&t);
2893
2894	ddt_histogram_stat(&dds_total, &ddh_total);
2895
2896	(void) printf("Simulated DDT histogram:\n");
2897
2898	zpool_dump_ddt(&dds_total, &ddh_total);
2899
2900	dump_dedup_ratio(&dds_total);
2901}
2902
2903static void
2904dump_zpool(spa_t *spa)
2905{
2906	dsl_pool_t *dp = spa_get_dsl(spa);
2907	int rc = 0;
2908
2909	if (dump_opt['S']) {
2910		dump_simulated_ddt(spa);
2911		return;
2912	}
2913
2914	if (!dump_opt['e'] && dump_opt['C'] > 1) {
2915		(void) printf("\nCached configuration:\n");
2916		dump_nvlist(spa->spa_config, 8);
2917	}
2918
2919	if (dump_opt['C'])
2920		dump_config(spa);
2921
2922	if (dump_opt['u'])
2923		dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2924
2925	if (dump_opt['D'])
2926		dump_all_ddts(spa);
2927
2928	if (dump_opt['d'] > 2 || dump_opt['m'])
2929		dump_metaslabs(spa);
2930	if (dump_opt['M'])
2931		dump_metaslab_groups(spa);
2932
2933	if (dump_opt['d'] || dump_opt['i']) {
2934		uint64_t refcount;
2935		dump_dir(dp->dp_meta_objset);
2936		if (dump_opt['d'] >= 3) {
2937			dump_bpobj(&spa->spa_deferred_bpobj,
2938			    "Deferred frees", 0);
2939			if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2940				dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2941				    "Pool snapshot frees", 0);
2942			}
2943
2944			if (spa_feature_is_active(spa,
2945			    SPA_FEATURE_ASYNC_DESTROY)) {
2946				dump_bptree(spa->spa_meta_objset,
2947				    spa->spa_dsl_pool->dp_bptree_obj,
2948				    "Pool dataset frees");
2949			}
2950			dump_dtl(spa->spa_root_vdev, 0);
2951		}
2952		(void) dmu_objset_find(spa_name(spa), dump_one_dir,
2953		    NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2954
2955		(void) feature_get_refcount(spa,
2956		    &spa_feature_table[SPA_FEATURE_LARGE_BLOCKS], &refcount);
2957		if (num_large_blocks != refcount) {
2958			(void) printf("large_blocks feature refcount mismatch: "
2959			    "expected %lld != actual %lld\n",
2960			    (longlong_t)num_large_blocks,
2961			    (longlong_t)refcount);
2962			rc = 2;
2963		} else {
2964			(void) printf("Verified large_blocks feature refcount "
2965			    "is correct (%llu)\n", (longlong_t)refcount);
2966		}
2967	}
2968	if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
2969		rc = dump_block_stats(spa);
2970
2971	if (rc == 0)
2972		rc = verify_spacemap_refcounts(spa);
2973
2974	if (dump_opt['s'])
2975		show_pool_stats(spa);
2976
2977	if (dump_opt['h'])
2978		dump_history(spa);
2979
2980	if (rc != 0)
2981		exit(rc);
2982}
2983
2984#define	ZDB_FLAG_CHECKSUM	0x0001
2985#define	ZDB_FLAG_DECOMPRESS	0x0002
2986#define	ZDB_FLAG_BSWAP		0x0004
2987#define	ZDB_FLAG_GBH		0x0008
2988#define	ZDB_FLAG_INDIRECT	0x0010
2989#define	ZDB_FLAG_PHYS		0x0020
2990#define	ZDB_FLAG_RAW		0x0040
2991#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
2992
2993int flagbits[256];
2994
2995static void
2996zdb_print_blkptr(blkptr_t *bp, int flags)
2997{
2998	char blkbuf[BP_SPRINTF_LEN];
2999
3000	if (flags & ZDB_FLAG_BSWAP)
3001		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3002
3003	snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3004	(void) printf("%s\n", blkbuf);
3005}
3006
3007static void
3008zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3009{
3010	int i;
3011
3012	for (i = 0; i < nbps; i++)
3013		zdb_print_blkptr(&bp[i], flags);
3014}
3015
3016static void
3017zdb_dump_gbh(void *buf, int flags)
3018{
3019	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3020}
3021
3022static void
3023zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3024{
3025	if (flags & ZDB_FLAG_BSWAP)
3026		byteswap_uint64_array(buf, size);
3027	(void) write(1, buf, size);
3028}
3029
3030static void
3031zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3032{
3033	uint64_t *d = (uint64_t *)buf;
3034	int nwords = size / sizeof (uint64_t);
3035	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3036	int i, j;
3037	char *hdr, *c;
3038
3039
3040	if (do_bswap)
3041		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
3042	else
3043		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
3044
3045	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
3046
3047	for (i = 0; i < nwords; i += 2) {
3048		(void) printf("%06llx:  %016llx  %016llx  ",
3049		    (u_longlong_t)(i * sizeof (uint64_t)),
3050		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3051		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3052
3053		c = (char *)&d[i];
3054		for (j = 0; j < 2 * sizeof (uint64_t); j++)
3055			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
3056		(void) printf("\n");
3057	}
3058}
3059
3060/*
3061 * There are two acceptable formats:
3062 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
3063 *	child[.child]*    - For example: 0.1.1
3064 *
3065 * The second form can be used to specify arbitrary vdevs anywhere
3066 * in the heirarchy.  For example, in a pool with a mirror of
3067 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3068 */
3069static vdev_t *
3070zdb_vdev_lookup(vdev_t *vdev, char *path)
3071{
3072	char *s, *p, *q;
3073	int i;
3074
3075	if (vdev == NULL)
3076		return (NULL);
3077
3078	/* First, assume the x.x.x.x format */
3079	i = (int)strtoul(path, &s, 10);
3080	if (s == path || (s && *s != '.' && *s != '\0'))
3081		goto name;
3082	if (i < 0 || i >= vdev->vdev_children)
3083		return (NULL);
3084
3085	vdev = vdev->vdev_child[i];
3086	if (*s == '\0')
3087		return (vdev);
3088	return (zdb_vdev_lookup(vdev, s+1));
3089
3090name:
3091	for (i = 0; i < vdev->vdev_children; i++) {
3092		vdev_t *vc = vdev->vdev_child[i];
3093
3094		if (vc->vdev_path == NULL) {
3095			vc = zdb_vdev_lookup(vc, path);
3096			if (vc == NULL)
3097				continue;
3098			else
3099				return (vc);
3100		}
3101
3102		p = strrchr(vc->vdev_path, '/');
3103		p = p ? p + 1 : vc->vdev_path;
3104		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3105
3106		if (strcmp(vc->vdev_path, path) == 0)
3107			return (vc);
3108		if (strcmp(p, path) == 0)
3109			return (vc);
3110		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3111			return (vc);
3112	}
3113
3114	return (NULL);
3115}
3116
3117/*
3118 * Read a block from a pool and print it out.  The syntax of the
3119 * block descriptor is:
3120 *
3121 *	pool:vdev_specifier:offset:size[:flags]
3122 *
3123 *	pool           - The name of the pool you wish to read from
3124 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3125 *	offset         - offset, in hex, in bytes
3126 *	size           - Amount of data to read, in hex, in bytes
3127 *	flags          - A string of characters specifying options
3128 *		 b: Decode a blkptr at given offset within block
3129 *		*c: Calculate and display checksums
3130 *		 d: Decompress data before dumping
3131 *		 e: Byteswap data before dumping
3132 *		 g: Display data as a gang block header
3133 *		 i: Display as an indirect block
3134 *		 p: Do I/O to physical offset
3135 *		 r: Dump raw data to stdout
3136 *
3137 *              * = not yet implemented
3138 */
3139static void
3140zdb_read_block(char *thing, spa_t *spa)
3141{
3142	blkptr_t blk, *bp = &blk;
3143	dva_t *dva = bp->blk_dva;
3144	int flags = 0;
3145	uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3146	zio_t *zio;
3147	vdev_t *vd;
3148	void *pbuf, *lbuf, *buf;
3149	char *s, *p, *dup, *vdev, *flagstr;
3150	int i, error;
3151
3152	dup = strdup(thing);
3153	s = strtok(dup, ":");
3154	vdev = s ? s : "";
3155	s = strtok(NULL, ":");
3156	offset = strtoull(s ? s : "", NULL, 16);
3157	s = strtok(NULL, ":");
3158	size = strtoull(s ? s : "", NULL, 16);
3159	s = strtok(NULL, ":");
3160	flagstr = s ? s : "";
3161
3162	s = NULL;
3163	if (size == 0)
3164		s = "size must not be zero";
3165	if (!IS_P2ALIGNED(size, DEV_BSIZE))
3166		s = "size must be a multiple of sector size";
3167	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3168		s = "offset must be a multiple of sector size";
3169	if (s) {
3170		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3171		free(dup);
3172		return;
3173	}
3174
3175	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3176		for (i = 0; flagstr[i]; i++) {
3177			int bit = flagbits[(uchar_t)flagstr[i]];
3178
3179			if (bit == 0) {
3180				(void) printf("***Invalid flag: %c\n",
3181				    flagstr[i]);
3182				continue;
3183			}
3184			flags |= bit;
3185
3186			/* If it's not something with an argument, keep going */
3187			if ((bit & (ZDB_FLAG_CHECKSUM |
3188			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
3189				continue;
3190
3191			p = &flagstr[i + 1];
3192			if (bit == ZDB_FLAG_PRINT_BLKPTR)
3193				blkptr_offset = strtoull(p, &p, 16);
3194			if (*p != ':' && *p != '\0') {
3195				(void) printf("***Invalid flag arg: '%s'\n", s);
3196				free(dup);
3197				return;
3198			}
3199		}
3200	}
3201
3202	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3203	if (vd == NULL) {
3204		(void) printf("***Invalid vdev: %s\n", vdev);
3205		free(dup);
3206		return;
3207	} else {
3208		if (vd->vdev_path)
3209			(void) fprintf(stderr, "Found vdev: %s\n",
3210			    vd->vdev_path);
3211		else
3212			(void) fprintf(stderr, "Found vdev type: %s\n",
3213			    vd->vdev_ops->vdev_op_type);
3214	}
3215
3216	psize = size;
3217	lsize = size;
3218
3219	pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3220	lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3221
3222	BP_ZERO(bp);
3223
3224	DVA_SET_VDEV(&dva[0], vd->vdev_id);
3225	DVA_SET_OFFSET(&dva[0], offset);
3226	DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3227	DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3228
3229	BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3230
3231	BP_SET_LSIZE(bp, lsize);
3232	BP_SET_PSIZE(bp, psize);
3233	BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3234	BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3235	BP_SET_TYPE(bp, DMU_OT_NONE);
3236	BP_SET_LEVEL(bp, 0);
3237	BP_SET_DEDUP(bp, 0);
3238	BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3239
3240	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3241	zio = zio_root(spa, NULL, NULL, 0);
3242
3243	if (vd == vd->vdev_top) {
3244		/*
3245		 * Treat this as a normal block read.
3246		 */
3247		zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3248		    ZIO_PRIORITY_SYNC_READ,
3249		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3250	} else {
3251		/*
3252		 * Treat this as a vdev child I/O.
3253		 */
3254		zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3255		    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3256		    ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3257		    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3258		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3259	}
3260
3261	error = zio_wait(zio);
3262	spa_config_exit(spa, SCL_STATE, FTAG);
3263
3264	if (error) {
3265		(void) printf("Read of %s failed, error: %d\n", thing, error);
3266		goto out;
3267	}
3268
3269	if (flags & ZDB_FLAG_DECOMPRESS) {
3270		/*
3271		 * We don't know how the data was compressed, so just try
3272		 * every decompress function at every inflated blocksize.
3273		 */
3274		enum zio_compress c;
3275		void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3276		void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3277
3278		bcopy(pbuf, pbuf2, psize);
3279
3280		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3281		    SPA_MAXBLOCKSIZE - psize) == 0);
3282
3283		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3284		    SPA_MAXBLOCKSIZE - psize) == 0);
3285
3286		for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3287		    lsize -= SPA_MINBLOCKSIZE) {
3288			for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3289				if (zio_decompress_data(c, pbuf, lbuf,
3290				    psize, lsize) == 0 &&
3291				    zio_decompress_data(c, pbuf2, lbuf2,
3292				    psize, lsize) == 0 &&
3293				    bcmp(lbuf, lbuf2, lsize) == 0)
3294					break;
3295			}
3296			if (c != ZIO_COMPRESS_FUNCTIONS)
3297				break;
3298			lsize -= SPA_MINBLOCKSIZE;
3299		}
3300
3301		umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3302		umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3303
3304		if (lsize <= psize) {
3305			(void) printf("Decompress of %s failed\n", thing);
3306			goto out;
3307		}
3308		buf = lbuf;
3309		size = lsize;
3310	} else {
3311		buf = pbuf;
3312		size = psize;
3313	}
3314
3315	if (flags & ZDB_FLAG_PRINT_BLKPTR)
3316		zdb_print_blkptr((blkptr_t *)(void *)
3317		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3318	else if (flags & ZDB_FLAG_RAW)
3319		zdb_dump_block_raw(buf, size, flags);
3320	else if (flags & ZDB_FLAG_INDIRECT)
3321		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3322		    flags);
3323	else if (flags & ZDB_FLAG_GBH)
3324		zdb_dump_gbh(buf, flags);
3325	else
3326		zdb_dump_block(thing, buf, size, flags);
3327
3328out:
3329	umem_free(pbuf, SPA_MAXBLOCKSIZE);
3330	umem_free(lbuf, SPA_MAXBLOCKSIZE);
3331	free(dup);
3332}
3333
3334static boolean_t
3335pool_match(nvlist_t *cfg, char *tgt)
3336{
3337	uint64_t v, guid = strtoull(tgt, NULL, 0);
3338	char *s;
3339
3340	if (guid != 0) {
3341		if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3342			return (v == guid);
3343	} else {
3344		if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3345			return (strcmp(s, tgt) == 0);
3346	}
3347	return (B_FALSE);
3348}
3349
3350static char *
3351find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3352{
3353	nvlist_t *pools;
3354	nvlist_t *match = NULL;
3355	char *name = NULL;
3356	char *sepp = NULL;
3357	char sep;
3358	int count = 0;
3359	importargs_t args = { 0 };
3360
3361	args.paths = dirc;
3362	args.path = dirv;
3363	args.can_be_active = B_TRUE;
3364
3365	if ((sepp = strpbrk(*target, "/@")) != NULL) {
3366		sep = *sepp;
3367		*sepp = '\0';
3368	}
3369
3370	pools = zpool_search_import(g_zfs, &args);
3371
3372	if (pools != NULL) {
3373		nvpair_t *elem = NULL;
3374		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3375			verify(nvpair_value_nvlist(elem, configp) == 0);
3376			if (pool_match(*configp, *target)) {
3377				count++;
3378				if (match != NULL) {
3379					/* print previously found config */
3380					if (name != NULL) {
3381						(void) printf("%s\n", name);
3382						dump_nvlist(match, 8);
3383						name = NULL;
3384					}
3385					(void) printf("%s\n",
3386					    nvpair_name(elem));
3387					dump_nvlist(*configp, 8);
3388				} else {
3389					match = *configp;
3390					name = nvpair_name(elem);
3391				}
3392			}
3393		}
3394	}
3395	if (count > 1)
3396		(void) fatal("\tMatched %d pools - use pool GUID "
3397		    "instead of pool name or \n"
3398		    "\tpool name part of a dataset name to select pool", count);
3399
3400	if (sepp)
3401		*sepp = sep;
3402	/*
3403	 * If pool GUID was specified for pool id, replace it with pool name
3404	 */
3405	if (name && (strstr(*target, name) != *target)) {
3406		int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3407
3408		*target = umem_alloc(sz, UMEM_NOFAIL);
3409		(void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3410	}
3411
3412	*configp = name ? match : NULL;
3413
3414	return (name);
3415}
3416
3417int
3418main(int argc, char **argv)
3419{
3420	int i, c;
3421	struct rlimit rl = { 1024, 1024 };
3422	spa_t *spa = NULL;
3423	objset_t *os = NULL;
3424	int dump_all = 1;
3425	int verbose = 0;
3426	int error = 0;
3427	char **searchdirs = NULL;
3428	int nsearch = 0;
3429	char *target;
3430	nvlist_t *policy = NULL;
3431	uint64_t max_txg = UINT64_MAX;
3432	int rewind = ZPOOL_NEVER_REWIND;
3433
3434	(void) setrlimit(RLIMIT_NOFILE, &rl);
3435	(void) enable_extended_FILE_stdio(-1, -1);
3436
3437	dprintf_setup(&argc, argv);
3438
3439	while ((c = getopt(argc, argv,
3440	    "bcdhilmMI:suCDRSAFLXx:evp:t:U:P")) != -1) {
3441		switch (c) {
3442		case 'b':
3443		case 'c':
3444		case 'd':
3445		case 'h':
3446		case 'i':
3447		case 'l':
3448		case 'm':
3449		case 's':
3450		case 'u':
3451		case 'C':
3452		case 'D':
3453		case 'M':
3454		case 'R':
3455		case 'S':
3456			dump_opt[c]++;
3457			dump_all = 0;
3458			break;
3459		case 'A':
3460		case 'F':
3461		case 'L':
3462		case 'X':
3463		case 'e':
3464		case 'P':
3465			dump_opt[c]++;
3466			break;
3467		case 'I':
3468			max_inflight = strtoull(optarg, NULL, 0);
3469			if (max_inflight == 0) {
3470				(void) fprintf(stderr, "maximum number "
3471				    "of inflight I/Os must be greater "
3472				    "than 0\n");
3473				usage();
3474			}
3475			break;
3476		case 'p':
3477			if (searchdirs == NULL) {
3478				searchdirs = umem_alloc(sizeof (char *),
3479				    UMEM_NOFAIL);
3480			} else {
3481				char **tmp = umem_alloc((nsearch + 1) *
3482				    sizeof (char *), UMEM_NOFAIL);
3483				bcopy(searchdirs, tmp, nsearch *
3484				    sizeof (char *));
3485				umem_free(searchdirs,
3486				    nsearch * sizeof (char *));
3487				searchdirs = tmp;
3488			}
3489			searchdirs[nsearch++] = optarg;
3490			break;
3491		case 't':
3492			max_txg = strtoull(optarg, NULL, 0);
3493			if (max_txg < TXG_INITIAL) {
3494				(void) fprintf(stderr, "incorrect txg "
3495				    "specified: %s\n", optarg);
3496				usage();
3497			}
3498			break;
3499		case 'U':
3500			spa_config_path = optarg;
3501			break;
3502		case 'v':
3503			verbose++;
3504			break;
3505		case 'x':
3506			vn_dumpdir = optarg;
3507			break;
3508		default:
3509			usage();
3510			break;
3511		}
3512	}
3513
3514	if (!dump_opt['e'] && searchdirs != NULL) {
3515		(void) fprintf(stderr, "-p option requires use of -e\n");
3516		usage();
3517	}
3518
3519	/*
3520	 * ZDB does not typically re-read blocks; therefore limit the ARC
3521	 * to 256 MB, which can be used entirely for metadata.
3522	 */
3523	zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
3524
3525	/*
3526	 * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
3527	 * "zdb -b" uses traversal prefetch which uses async reads.
3528	 * For good performance, let several of them be active at once.
3529	 */
3530	zfs_vdev_async_read_max_active = 10;
3531
3532	kernel_init(FREAD);
3533	g_zfs = libzfs_init();
3534	ASSERT(g_zfs != NULL);
3535
3536	if (dump_all)
3537		verbose = MAX(verbose, 1);
3538
3539	for (c = 0; c < 256; c++) {
3540		if (dump_all && !strchr("elAFLRSXP", c))
3541			dump_opt[c] = 1;
3542		if (dump_opt[c])
3543			dump_opt[c] += verbose;
3544	}
3545
3546	aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3547	zfs_recover = (dump_opt['A'] > 1);
3548
3549	argc -= optind;
3550	argv += optind;
3551
3552	if (argc < 2 && dump_opt['R'])
3553		usage();
3554	if (argc < 1) {
3555		if (!dump_opt['e'] && dump_opt['C']) {
3556			dump_cachefile(spa_config_path);
3557			return (0);
3558		}
3559		usage();
3560	}
3561
3562	if (dump_opt['l']) {
3563		dump_label(argv[0]);
3564		return (0);
3565	}
3566
3567	if (dump_opt['X'] || dump_opt['F'])
3568		rewind = ZPOOL_DO_REWIND |
3569		    (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3570
3571	if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3572	    nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3573	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3574		fatal("internal error: %s", strerror(ENOMEM));
3575
3576	error = 0;
3577	target = argv[0];
3578
3579	if (dump_opt['e']) {
3580		nvlist_t *cfg = NULL;
3581		char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3582
3583		error = ENOENT;
3584		if (name) {
3585			if (dump_opt['C'] > 1) {
3586				(void) printf("\nConfiguration for import:\n");
3587				dump_nvlist(cfg, 8);
3588			}
3589			if (nvlist_add_nvlist(cfg,
3590			    ZPOOL_REWIND_POLICY, policy) != 0) {
3591				fatal("can't open '%s': %s",
3592				    target, strerror(ENOMEM));
3593			}
3594			if ((error = spa_import(name, cfg, NULL,
3595			    ZFS_IMPORT_MISSING_LOG)) != 0) {
3596				error = spa_import(name, cfg, NULL,
3597				    ZFS_IMPORT_VERBATIM);
3598			}
3599		}
3600	}
3601
3602	if (error == 0) {
3603		if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3604			error = spa_open_rewind(target, &spa, FTAG, policy,
3605			    NULL);
3606			if (error) {
3607				/*
3608				 * If we're missing the log device then
3609				 * try opening the pool after clearing the
3610				 * log state.
3611				 */
3612				mutex_enter(&spa_namespace_lock);
3613				if ((spa = spa_lookup(target)) != NULL &&
3614				    spa->spa_log_state == SPA_LOG_MISSING) {
3615					spa->spa_log_state = SPA_LOG_CLEAR;
3616					error = 0;
3617				}
3618				mutex_exit(&spa_namespace_lock);
3619
3620				if (!error) {
3621					error = spa_open_rewind(target, &spa,
3622					    FTAG, policy, NULL);
3623				}
3624			}
3625		} else {
3626			error = dmu_objset_own(target, DMU_OST_ANY,
3627			    B_TRUE, FTAG, &os);
3628		}
3629	}
3630	nvlist_free(policy);
3631
3632	if (error)
3633		fatal("can't open '%s': %s", target, strerror(error));
3634
3635	argv++;
3636	argc--;
3637	if (!dump_opt['R']) {
3638		if (argc > 0) {
3639			zopt_objects = argc;
3640			zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3641			for (i = 0; i < zopt_objects; i++) {
3642				errno = 0;
3643				zopt_object[i] = strtoull(argv[i], NULL, 0);
3644				if (zopt_object[i] == 0 && errno != 0)
3645					fatal("bad number %s: %s",
3646					    argv[i], strerror(errno));
3647			}
3648		}
3649		if (os != NULL) {
3650			dump_dir(os);
3651		} else if (zopt_objects > 0 && !dump_opt['m']) {
3652			dump_dir(spa->spa_meta_objset);
3653		} else {
3654			dump_zpool(spa);
3655		}
3656	} else {
3657		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3658		flagbits['c'] = ZDB_FLAG_CHECKSUM;
3659		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3660		flagbits['e'] = ZDB_FLAG_BSWAP;
3661		flagbits['g'] = ZDB_FLAG_GBH;
3662		flagbits['i'] = ZDB_FLAG_INDIRECT;
3663		flagbits['p'] = ZDB_FLAG_PHYS;
3664		flagbits['r'] = ZDB_FLAG_RAW;
3665
3666		for (i = 0; i < argc; i++)
3667			zdb_read_block(argv[i], spa);
3668	}
3669
3670	(os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3671
3672	fuid_table_destroy();
3673	sa_loaded = B_FALSE;
3674
3675	libzfs_fini(g_zfs);
3676	kernel_fini();
3677
3678	return (0);
3679}
3680