zdb.c revision 3a57275a335306e90136ebd00a4689fe0ee72519
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28#include <stdio.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/vdev.h>
40#include <sys/vdev_impl.h>
41#include <sys/metaslab_impl.h>
42#include <sys/dmu_objset.h>
43#include <sys/dsl_dir.h>
44#include <sys/dsl_dataset.h>
45#include <sys/dsl_pool.h>
46#include <sys/dbuf.h>
47#include <sys/zil.h>
48#include <sys/zil_impl.h>
49#include <sys/stat.h>
50#include <sys/resource.h>
51#include <sys/dmu_traverse.h>
52#include <sys/zio_checksum.h>
53#include <sys/zio_compress.h>
54#include <sys/zfs_fuid.h>
55#undef ZFS_MAXNAMELEN
56#undef verify
57#include <libzfs.h>
58
59const char cmdname[] = "zdb";
60uint8_t dump_opt[256];
61
62typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
63
64extern void dump_intent_log(zilog_t *);
65uint64_t *zopt_object = NULL;
66int zopt_objects = 0;
67int zdb_advance = ADVANCE_PRE;
68zbookmark_t zdb_noread = { 0, 0, ZB_NO_LEVEL, 0 };
69libzfs_handle_t *g_zfs;
70
71/*
72 * These libumem hooks provide a reasonable set of defaults for the allocator's
73 * debugging facilities.
74 */
75const char *
76_umem_debug_init()
77{
78	return ("default,verbose"); /* $UMEM_DEBUG setting */
79}
80
81const char *
82_umem_logging_init(void)
83{
84	return ("fail,contents"); /* $UMEM_LOGGING setting */
85}
86
87static void
88usage(void)
89{
90	(void) fprintf(stderr,
91	    "Usage: %s [-udibcsvL] [-U cachefile_path] [-O order] "
92	    "[-B os:obj:level:blkid] "
93	    "dataset [object...]\n"
94	    "       %s -C [pool]\n"
95	    "       %s -l dev\n"
96	    "       %s -R vdev:offset:size:flags\n"
97	    "       %s [-p path_to_vdev_dir]\n"
98	    "       %s -e pool | GUID | devid ...\n",
99	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
100
101	(void) fprintf(stderr, "	-u uberblock\n");
102	(void) fprintf(stderr, "	-d datasets\n");
103	(void) fprintf(stderr, "        -C cached pool configuration\n");
104	(void) fprintf(stderr, "	-i intent logs\n");
105	(void) fprintf(stderr, "	-b block statistics\n");
106	(void) fprintf(stderr, "	-c checksum all data blocks\n");
107	(void) fprintf(stderr, "	-s report stats on zdb's I/O\n");
108	(void) fprintf(stderr, "	-v verbose (applies to all others)\n");
109	(void) fprintf(stderr, "        -l dump label contents\n");
110	(void) fprintf(stderr, "	-L live pool (allows some errors)\n");
111	(void) fprintf(stderr, "	-O [!]<pre|post|prune|data|holes> "
112	    "visitation order\n");
113	(void) fprintf(stderr, "	-U cachefile_path -- use alternate "
114	    "cachefile\n");
115	(void) fprintf(stderr, "	-B objset:object:level:blkid -- "
116	    "simulate bad block\n");
117	(void) fprintf(stderr, "        -R read and display block from a"
118	    "device\n");
119	(void) fprintf(stderr, "        -e Pool is exported/destroyed/"
120	    "has altroot\n");
121	(void) fprintf(stderr, "	-p <Path to vdev dir> (use with -e)\n");
122	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
123	    "to make only that option verbose\n");
124	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
125	exit(1);
126}
127
128static void
129fatal(const char *fmt, ...)
130{
131	va_list ap;
132
133	va_start(ap, fmt);
134	(void) fprintf(stderr, "%s: ", cmdname);
135	(void) vfprintf(stderr, fmt, ap);
136	va_end(ap);
137	(void) fprintf(stderr, "\n");
138
139	exit(1);
140}
141
142static void
143dump_nvlist(nvlist_t *list, int indent)
144{
145	nvpair_t *elem = NULL;
146
147	while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
148		switch (nvpair_type(elem)) {
149		case DATA_TYPE_STRING:
150			{
151				char *value;
152
153				VERIFY(nvpair_value_string(elem, &value) == 0);
154				(void) printf("%*s%s='%s'\n", indent, "",
155				    nvpair_name(elem), value);
156			}
157			break;
158
159		case DATA_TYPE_UINT64:
160			{
161				uint64_t value;
162
163				VERIFY(nvpair_value_uint64(elem, &value) == 0);
164				(void) printf("%*s%s=%llu\n", indent, "",
165				    nvpair_name(elem), (u_longlong_t)value);
166			}
167			break;
168
169		case DATA_TYPE_NVLIST:
170			{
171				nvlist_t *value;
172
173				VERIFY(nvpair_value_nvlist(elem, &value) == 0);
174				(void) printf("%*s%s\n", indent, "",
175				    nvpair_name(elem));
176				dump_nvlist(value, indent + 4);
177			}
178			break;
179
180		case DATA_TYPE_NVLIST_ARRAY:
181			{
182				nvlist_t **value;
183				uint_t c, count;
184
185				VERIFY(nvpair_value_nvlist_array(elem, &value,
186				    &count) == 0);
187
188				for (c = 0; c < count; c++) {
189					(void) printf("%*s%s[%u]\n", indent, "",
190					    nvpair_name(elem), c);
191					dump_nvlist(value[c], indent + 8);
192				}
193			}
194			break;
195
196		default:
197
198			(void) printf("bad config type %d for %s\n",
199			    nvpair_type(elem), nvpair_name(elem));
200		}
201	}
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));
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
223const char dump_zap_stars[] = "****************************************";
224const int dump_zap_width = sizeof (dump_zap_stars) - 1;
225
226static void
227dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
228{
229	int i;
230	int minidx = ZAP_HISTOGRAM_SIZE - 1;
231	int maxidx = 0;
232	uint64_t max = 0;
233
234	for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
235		if (histo[i] > max)
236			max = histo[i];
237		if (histo[i] > 0 && i > maxidx)
238			maxidx = i;
239		if (histo[i] > 0 && i < minidx)
240			minidx = i;
241	}
242
243	if (max < dump_zap_width)
244		max = dump_zap_width;
245
246	for (i = minidx; i <= maxidx; i++)
247		(void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
248		    &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
249}
250
251static void
252dump_zap_stats(objset_t *os, uint64_t object)
253{
254	int error;
255	zap_stats_t zs;
256
257	error = zap_get_stats(os, object, &zs);
258	if (error)
259		return;
260
261	if (zs.zs_ptrtbl_len == 0) {
262		ASSERT(zs.zs_num_blocks == 1);
263		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
264		    (u_longlong_t)zs.zs_blocksize,
265		    (u_longlong_t)zs.zs_num_entries);
266		return;
267	}
268
269	(void) printf("\tFat ZAP stats:\n");
270
271	(void) printf("\t\tPointer table:\n");
272	(void) printf("\t\t\t%llu elements\n",
273	    (u_longlong_t)zs.zs_ptrtbl_len);
274	(void) printf("\t\t\tzt_blk: %llu\n",
275	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
276	(void) printf("\t\t\tzt_numblks: %llu\n",
277	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
278	(void) printf("\t\t\tzt_shift: %llu\n",
279	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
280	(void) printf("\t\t\tzt_blks_copied: %llu\n",
281	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
282	(void) printf("\t\t\tzt_nextblk: %llu\n",
283	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
284
285	(void) printf("\t\tZAP entries: %llu\n",
286	    (u_longlong_t)zs.zs_num_entries);
287	(void) printf("\t\tLeaf blocks: %llu\n",
288	    (u_longlong_t)zs.zs_num_leafs);
289	(void) printf("\t\tTotal blocks: %llu\n",
290	    (u_longlong_t)zs.zs_num_blocks);
291	(void) printf("\t\tzap_block_type: 0x%llx\n",
292	    (u_longlong_t)zs.zs_block_type);
293	(void) printf("\t\tzap_magic: 0x%llx\n",
294	    (u_longlong_t)zs.zs_magic);
295	(void) printf("\t\tzap_salt: 0x%llx\n",
296	    (u_longlong_t)zs.zs_salt);
297
298	(void) printf("\t\tLeafs with 2^n pointers:\n");
299	dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
300
301	(void) printf("\t\tBlocks with n*5 entries:\n");
302	dump_zap_histogram(zs.zs_blocks_with_n5_entries);
303
304	(void) printf("\t\tBlocks n/10 full:\n");
305	dump_zap_histogram(zs.zs_blocks_n_tenths_full);
306
307	(void) printf("\t\tEntries with n chunks:\n");
308	dump_zap_histogram(zs.zs_entries_using_n_chunks);
309
310	(void) printf("\t\tBuckets with n entries:\n");
311	dump_zap_histogram(zs.zs_buckets_with_n_entries);
312}
313
314/*ARGSUSED*/
315static void
316dump_none(objset_t *os, uint64_t object, void *data, size_t size)
317{
318}
319
320/*ARGSUSED*/
321void
322dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
323{
324}
325
326/*ARGSUSED*/
327static void
328dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
329{
330}
331
332/*ARGSUSED*/
333static void
334dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
335{
336	zap_cursor_t zc;
337	zap_attribute_t attr;
338	void *prop;
339	int i;
340
341	dump_zap_stats(os, object);
342	(void) printf("\n");
343
344	for (zap_cursor_init(&zc, os, object);
345	    zap_cursor_retrieve(&zc, &attr) == 0;
346	    zap_cursor_advance(&zc)) {
347		(void) printf("\t\t%s = ", attr.za_name);
348		if (attr.za_num_integers == 0) {
349			(void) printf("\n");
350			continue;
351		}
352		prop = umem_zalloc(attr.za_num_integers *
353		    attr.za_integer_length, UMEM_NOFAIL);
354		(void) zap_lookup(os, object, attr.za_name,
355		    attr.za_integer_length, attr.za_num_integers, prop);
356		if (attr.za_integer_length == 1) {
357			(void) printf("%s", (char *)prop);
358		} else {
359			for (i = 0; i < attr.za_num_integers; i++) {
360				switch (attr.za_integer_length) {
361				case 2:
362					(void) printf("%u ",
363					    ((uint16_t *)prop)[i]);
364					break;
365				case 4:
366					(void) printf("%u ",
367					    ((uint32_t *)prop)[i]);
368					break;
369				case 8:
370					(void) printf("%lld ",
371					    (u_longlong_t)((int64_t *)prop)[i]);
372					break;
373				}
374			}
375		}
376		(void) printf("\n");
377		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
378	}
379	zap_cursor_fini(&zc);
380}
381
382/*ARGSUSED*/
383static void
384dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
385{
386	zap_cursor_t zc;
387	zap_attribute_t attr;
388	const char *typenames[] = {
389		/* 0 */ "not specified",
390		/* 1 */ "FIFO",
391		/* 2 */ "Character Device",
392		/* 3 */ "3 (invalid)",
393		/* 4 */ "Directory",
394		/* 5 */ "5 (invalid)",
395		/* 6 */ "Block Device",
396		/* 7 */ "7 (invalid)",
397		/* 8 */ "Regular File",
398		/* 9 */ "9 (invalid)",
399		/* 10 */ "Symbolic Link",
400		/* 11 */ "11 (invalid)",
401		/* 12 */ "Socket",
402		/* 13 */ "Door",
403		/* 14 */ "Event Port",
404		/* 15 */ "15 (invalid)",
405	};
406
407	dump_zap_stats(os, object);
408	(void) printf("\n");
409
410	for (zap_cursor_init(&zc, os, object);
411	    zap_cursor_retrieve(&zc, &attr) == 0;
412	    zap_cursor_advance(&zc)) {
413		(void) printf("\t\t%s = %lld (type: %s)\n",
414		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
415		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
416	}
417	zap_cursor_fini(&zc);
418}
419
420static void
421dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
422{
423	uint64_t alloc, offset, entry;
424	uint8_t mapshift = sm->sm_shift;
425	uint64_t mapstart = sm->sm_start;
426	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
427			    "INVALID", "INVALID", "INVALID", "INVALID" };
428
429	if (smo->smo_object == 0)
430		return;
431
432	/*
433	 * Print out the freelist entries in both encoded and decoded form.
434	 */
435	alloc = 0;
436	for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
437		VERIFY(0 == dmu_read(os, smo->smo_object, offset,
438		    sizeof (entry), &entry));
439		if (SM_DEBUG_DECODE(entry)) {
440			(void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n",
441			    (u_longlong_t)(offset / sizeof (entry)),
442			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
443			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
444			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
445		} else {
446			(void) printf("\t\t[%4llu]    %c  range:"
447			    " %08llx-%08llx  size: %06llx\n",
448			    (u_longlong_t)(offset / sizeof (entry)),
449			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
450			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
451			    mapshift) + mapstart),
452			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
453			    mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
454			    mapshift)),
455			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
456			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
457				alloc += SM_RUN_DECODE(entry) << mapshift;
458			else
459				alloc -= SM_RUN_DECODE(entry) << mapshift;
460		}
461	}
462	if (alloc != smo->smo_alloc) {
463		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
464		    "with space map summary (%llu)\n",
465		    (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
466	}
467}
468
469static void
470dump_metaslab(metaslab_t *msp)
471{
472	char freebuf[5];
473	space_map_obj_t *smo = &msp->ms_smo;
474	vdev_t *vd = msp->ms_group->mg_vd;
475	spa_t *spa = vd->vdev_spa;
476
477	nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf);
478
479	if (dump_opt['d'] <= 5) {
480		(void) printf("\t%10llx   %10llu   %5s\n",
481		    (u_longlong_t)msp->ms_map.sm_start,
482		    (u_longlong_t)smo->smo_object,
483		    freebuf);
484		return;
485	}
486
487	(void) printf(
488	    "\tvdev %llu   offset %08llx   spacemap %4llu   free %5s\n",
489	    (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start,
490	    (u_longlong_t)smo->smo_object, freebuf);
491
492	ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift));
493
494	dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map);
495}
496
497static void
498dump_metaslabs(spa_t *spa)
499{
500	vdev_t *rvd = spa->spa_root_vdev;
501	vdev_t *vd;
502	int c, m;
503
504	(void) printf("\nMetaslabs:\n");
505
506	for (c = 0; c < rvd->vdev_children; c++) {
507		vd = rvd->vdev_child[c];
508
509		(void) printf("\n    vdev %llu = %s\n\n",
510		    (u_longlong_t)vd->vdev_id, vdev_description(vd));
511
512		if (dump_opt['d'] <= 5) {
513			(void) printf("\t%10s   %10s   %5s\n",
514			    "offset", "spacemap", "free");
515			(void) printf("\t%10s   %10s   %5s\n",
516			    "------", "--------", "----");
517		}
518		for (m = 0; m < vd->vdev_ms_count; m++)
519			dump_metaslab(vd->vdev_ms[m]);
520		(void) printf("\n");
521	}
522}
523
524static void
525dump_dtl(vdev_t *vd, int indent)
526{
527	avl_tree_t *t = &vd->vdev_dtl_map.sm_root;
528	space_seg_t *ss;
529	vdev_t *pvd;
530	int c;
531
532	if (indent == 0)
533		(void) printf("\nDirty time logs:\n\n");
534
535	(void) printf("\t%*s%s\n", indent, "", vdev_description(vd));
536
537	for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) {
538		/*
539		 * Everything in this DTL must appear in all parent DTL unions.
540		 */
541		for (pvd = vd; pvd; pvd = pvd->vdev_parent)
542			ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map,
543			    ss->ss_start, ss->ss_end - ss->ss_start));
544		(void) printf("\t%*soutage [%llu,%llu] length %llu\n",
545		    indent, "",
546		    (u_longlong_t)ss->ss_start,
547		    (u_longlong_t)ss->ss_end - 1,
548		    (u_longlong_t)(ss->ss_end - ss->ss_start));
549	}
550
551	(void) printf("\n");
552
553	if (dump_opt['d'] > 5 && vd->vdev_children == 0) {
554		dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl,
555		    &vd->vdev_dtl_map);
556		(void) printf("\n");
557	}
558
559	for (c = 0; c < vd->vdev_children; c++)
560		dump_dtl(vd->vdev_child[c], indent + 4);
561}
562
563/*ARGSUSED*/
564static void
565dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
566{
567}
568
569static uint64_t
570blkid2offset(dnode_phys_t *dnp, int level, uint64_t blkid)
571{
572	if (level < 0)
573		return (blkid);
574
575	return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
576	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
577}
578
579static void
580sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas)
581{
582	dva_t *dva = bp->blk_dva;
583	int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1;
584	int i;
585
586	blkbuf[0] = '\0';
587
588	for (i = 0; i < ndvas; i++)
589		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
590		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
591		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
592		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
593
594	(void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu",
595	    (u_longlong_t)BP_GET_LSIZE(bp),
596	    (u_longlong_t)BP_GET_PSIZE(bp),
597	    (u_longlong_t)bp->blk_fill,
598	    (u_longlong_t)bp->blk_birth);
599}
600
601/* ARGSUSED */
602static int
603zdb_indirect_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a)
604{
605	zbookmark_t *zb = &bc->bc_bookmark;
606	blkptr_t *bp = &bc->bc_blkptr;
607	void *data = bc->bc_data;
608	dnode_phys_t *dnp = bc->bc_dnode;
609	char blkbuf[BP_SPRINTF_LEN + 80];
610	int l;
611
612	if (bc->bc_errno) {
613		(void) sprintf(blkbuf,
614		    "Error %d reading <%llu, %llu, %lld, %llu>: ",
615		    bc->bc_errno,
616		    (u_longlong_t)zb->zb_objset,
617		    (u_longlong_t)zb->zb_object,
618		    (u_longlong_t)zb->zb_level,
619		    (u_longlong_t)zb->zb_blkid);
620		goto out;
621	}
622
623	if (zb->zb_level == -1) {
624		ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET);
625		ASSERT3U(BP_GET_LEVEL(bp), ==, 0);
626	} else {
627		ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
628		ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
629	}
630
631	if (zb->zb_level > 0) {
632		uint64_t fill = 0;
633		blkptr_t *bpx, *bpend;
634
635		for (bpx = data, bpend = bpx + BP_GET_LSIZE(bp) / sizeof (*bpx);
636		    bpx < bpend; bpx++) {
637			if (bpx->blk_birth != 0) {
638				fill += bpx->blk_fill;
639			} else {
640				ASSERT(bpx->blk_fill == 0);
641			}
642		}
643		ASSERT3U(fill, ==, bp->blk_fill);
644	}
645
646	if (zb->zb_level == 0 && dnp->dn_type == DMU_OT_DNODE) {
647		uint64_t fill = 0;
648		dnode_phys_t *dnx, *dnend;
649
650		for (dnx = data, dnend = dnx + (BP_GET_LSIZE(bp)>>DNODE_SHIFT);
651		    dnx < dnend; dnx++) {
652			if (dnx->dn_type != DMU_OT_NONE)
653				fill++;
654		}
655		ASSERT3U(fill, ==, bp->blk_fill);
656	}
657
658	(void) sprintf(blkbuf, "%16llx ",
659	    (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid));
660
661	ASSERT(zb->zb_level >= 0);
662
663	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
664		if (l == zb->zb_level) {
665			(void) sprintf(blkbuf + strlen(blkbuf), "L%llx",
666			    (u_longlong_t)zb->zb_level);
667		} else {
668			(void) sprintf(blkbuf + strlen(blkbuf), " ");
669		}
670	}
671
672out:
673	if (bp->blk_birth == 0) {
674		(void) sprintf(blkbuf + strlen(blkbuf), "<hole>");
675		(void) printf("%s\n", blkbuf);
676	} else {
677		sprintf_blkptr_compact(blkbuf + strlen(blkbuf), bp,
678		    dump_opt['d'] > 5 ? 1 : 0);
679		(void) printf("%s\n", blkbuf);
680	}
681
682	return (bc->bc_errno ? ERESTART : 0);
683}
684
685/*ARGSUSED*/
686static void
687dump_indirect(objset_t *os, uint64_t object, void *data, size_t size)
688{
689	traverse_handle_t *th;
690	uint64_t objset = dmu_objset_id(os);
691	int advance = zdb_advance;
692
693	(void) printf("Indirect blocks:\n");
694
695	if (object == 0)
696		advance |= ADVANCE_DATA;
697
698	th = traverse_init(dmu_objset_spa(os), zdb_indirect_cb, NULL, advance,
699	    ZIO_FLAG_CANFAIL);
700	th->th_noread = zdb_noread;
701
702	traverse_add_dnode(th, 0, -1ULL, objset, object);
703
704	while (traverse_more(th) == EAGAIN)
705		continue;
706
707	(void) printf("\n");
708
709	traverse_fini(th);
710}
711
712/*ARGSUSED*/
713static void
714dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
715{
716	dsl_dir_phys_t *dd = data;
717	time_t crtime;
718	char used[6], compressed[6], uncompressed[6], quota[6], resv[6];
719
720	if (dd == NULL)
721		return;
722
723	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
724
725	crtime = dd->dd_creation_time;
726	nicenum(dd->dd_used_bytes, used);
727	nicenum(dd->dd_compressed_bytes, compressed);
728	nicenum(dd->dd_uncompressed_bytes, uncompressed);
729	nicenum(dd->dd_quota, quota);
730	nicenum(dd->dd_reserved, resv);
731
732	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
733	(void) printf("\t\thead_dataset_obj = %llu\n",
734	    (u_longlong_t)dd->dd_head_dataset_obj);
735	(void) printf("\t\tparent_dir_obj = %llu\n",
736	    (u_longlong_t)dd->dd_parent_obj);
737	(void) printf("\t\torigin_obj = %llu\n",
738	    (u_longlong_t)dd->dd_origin_obj);
739	(void) printf("\t\tchild_dir_zapobj = %llu\n",
740	    (u_longlong_t)dd->dd_child_dir_zapobj);
741	(void) printf("\t\tused_bytes = %s\n", used);
742	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
743	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
744	(void) printf("\t\tquota = %s\n", quota);
745	(void) printf("\t\treserved = %s\n", resv);
746	(void) printf("\t\tprops_zapobj = %llu\n",
747	    (u_longlong_t)dd->dd_props_zapobj);
748	(void) printf("\t\tdeleg_zapobj = %llu\n",
749	    (u_longlong_t)dd->dd_deleg_zapobj);
750}
751
752/*ARGSUSED*/
753static void
754dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
755{
756	dsl_dataset_phys_t *ds = data;
757	time_t crtime;
758	char used[6], compressed[6], uncompressed[6], unique[6];
759	char blkbuf[BP_SPRINTF_LEN];
760
761	if (ds == NULL)
762		return;
763
764	ASSERT(size == sizeof (*ds));
765	crtime = ds->ds_creation_time;
766	nicenum(ds->ds_used_bytes, used);
767	nicenum(ds->ds_compressed_bytes, compressed);
768	nicenum(ds->ds_uncompressed_bytes, uncompressed);
769	nicenum(ds->ds_unique_bytes, unique);
770	sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp);
771
772	(void) printf("\t\tdataset_obj = %llu\n",
773	    (u_longlong_t)ds->ds_dir_obj);
774	(void) printf("\t\tprev_snap_obj = %llu\n",
775	    (u_longlong_t)ds->ds_prev_snap_obj);
776	(void) printf("\t\tprev_snap_txg = %llu\n",
777	    (u_longlong_t)ds->ds_prev_snap_txg);
778	(void) printf("\t\tnext_snap_obj = %llu\n",
779	    (u_longlong_t)ds->ds_next_snap_obj);
780	(void) printf("\t\tsnapnames_zapobj = %llu\n",
781	    (u_longlong_t)ds->ds_snapnames_zapobj);
782	(void) printf("\t\tnum_children = %llu\n",
783	    (u_longlong_t)ds->ds_num_children);
784	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
785	(void) printf("\t\tcreation_txg = %llu\n",
786	    (u_longlong_t)ds->ds_creation_txg);
787	(void) printf("\t\tdeadlist_obj = %llu\n",
788	    (u_longlong_t)ds->ds_deadlist_obj);
789	(void) printf("\t\tused_bytes = %s\n", used);
790	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
791	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
792	(void) printf("\t\tunique = %s\n", unique);
793	(void) printf("\t\tfsid_guid = %llu\n",
794	    (u_longlong_t)ds->ds_fsid_guid);
795	(void) printf("\t\tguid = %llu\n",
796	    (u_longlong_t)ds->ds_guid);
797	(void) printf("\t\tflags = %llx\n",
798	    (u_longlong_t)ds->ds_flags);
799	(void) printf("\t\tbp = %s\n", blkbuf);
800}
801
802static void
803dump_bplist(objset_t *mos, uint64_t object, char *name)
804{
805	bplist_t bpl = { 0 };
806	blkptr_t blk, *bp = &blk;
807	uint64_t itor = 0;
808	char bytes[6];
809	char comp[6];
810	char uncomp[6];
811
812	if (dump_opt['d'] < 3)
813		return;
814
815	mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL);
816	VERIFY(0 == bplist_open(&bpl, mos, object));
817	if (bplist_empty(&bpl)) {
818		bplist_close(&bpl);
819		mutex_destroy(&bpl.bpl_lock);
820		return;
821	}
822
823	nicenum(bpl.bpl_phys->bpl_bytes, bytes);
824	if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) {
825		nicenum(bpl.bpl_phys->bpl_comp, comp);
826		nicenum(bpl.bpl_phys->bpl_uncomp, uncomp);
827		(void) printf("\n    %s: %llu entries, %s (%s/%s comp)\n",
828		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries,
829		    bytes, comp, uncomp);
830	} else {
831		(void) printf("\n    %s: %llu entries, %s\n",
832		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes);
833	}
834
835	if (dump_opt['d'] < 5) {
836		bplist_close(&bpl);
837		mutex_destroy(&bpl.bpl_lock);
838		return;
839	}
840
841	(void) printf("\n");
842
843	while (bplist_iterate(&bpl, &itor, bp) == 0) {
844		char blkbuf[BP_SPRINTF_LEN];
845
846		ASSERT(bp->blk_birth != 0);
847		sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
848		(void) printf("\tItem %3llu: %s\n",
849		    (u_longlong_t)itor - 1, blkbuf);
850	}
851
852	bplist_close(&bpl);
853	mutex_destroy(&bpl.bpl_lock);
854}
855
856static avl_tree_t idx_tree;
857static avl_tree_t domain_tree;
858static boolean_t fuid_table_loaded;
859
860static void
861fuid_table_destroy()
862{
863	if (fuid_table_loaded) {
864		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
865		fuid_table_loaded = B_FALSE;
866	}
867}
868
869/*
870 * print uid or gid information.
871 * For normal POSIX id just the id is printed in decimal format.
872 * For CIFS files with FUID the fuid is printed in hex followed by
873 * the doman-rid string.
874 */
875static void
876print_idstr(uint64_t id, const char *id_type)
877{
878	if (FUID_INDEX(id)) {
879		char *domain;
880
881		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
882		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
883		    (u_longlong_t)id, domain, (int)FUID_RID(id));
884	} else {
885		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
886	}
887
888}
889
890static void
891dump_uidgid(objset_t *os, znode_phys_t *zp)
892{
893	uint32_t uid_idx, gid_idx;
894
895	uid_idx = FUID_INDEX(zp->zp_uid);
896	gid_idx = FUID_INDEX(zp->zp_gid);
897
898	/* Load domain table, if not already loaded */
899	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
900		uint64_t fuid_obj;
901
902		/* first find the fuid object.  It lives in the master node */
903		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
904		    8, 1, &fuid_obj) == 0);
905		(void) zfs_fuid_table_load(os, fuid_obj,
906		    &idx_tree, &domain_tree);
907		fuid_table_loaded = B_TRUE;
908	}
909
910	print_idstr(zp->zp_uid, "uid");
911	print_idstr(zp->zp_gid, "gid");
912}
913
914/*ARGSUSED*/
915static void
916dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
917{
918	znode_phys_t *zp = data;
919	time_t z_crtime, z_atime, z_mtime, z_ctime;
920	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
921	int error;
922
923	ASSERT(size >= sizeof (znode_phys_t));
924
925	error = zfs_obj_to_path(os, object, path, sizeof (path));
926	if (error != 0) {
927		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
928		    (u_longlong_t)object);
929	}
930
931	if (dump_opt['d'] < 3) {
932		(void) printf("\t%s\n", path);
933		return;
934	}
935
936	z_crtime = (time_t)zp->zp_crtime[0];
937	z_atime = (time_t)zp->zp_atime[0];
938	z_mtime = (time_t)zp->zp_mtime[0];
939	z_ctime = (time_t)zp->zp_ctime[0];
940
941	(void) printf("\tpath	%s\n", path);
942	dump_uidgid(os, zp);
943	(void) printf("\tatime	%s", ctime(&z_atime));
944	(void) printf("\tmtime	%s", ctime(&z_mtime));
945	(void) printf("\tctime	%s", ctime(&z_ctime));
946	(void) printf("\tcrtime	%s", ctime(&z_crtime));
947	(void) printf("\tgen	%llu\n", (u_longlong_t)zp->zp_gen);
948	(void) printf("\tmode	%llo\n", (u_longlong_t)zp->zp_mode);
949	(void) printf("\tsize	%llu\n", (u_longlong_t)zp->zp_size);
950	(void) printf("\tparent	%llu\n", (u_longlong_t)zp->zp_parent);
951	(void) printf("\tlinks	%llu\n", (u_longlong_t)zp->zp_links);
952	(void) printf("\txattr	%llu\n", (u_longlong_t)zp->zp_xattr);
953	(void) printf("\trdev	0x%016llx\n", (u_longlong_t)zp->zp_rdev);
954}
955
956/*ARGSUSED*/
957static void
958dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
959{
960}
961
962/*ARGSUSED*/
963static void
964dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
965{
966}
967
968static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
969	dump_none,		/* unallocated			*/
970	dump_zap,		/* object directory		*/
971	dump_uint64,		/* object array			*/
972	dump_none,		/* packed nvlist		*/
973	dump_packed_nvlist,	/* packed nvlist size		*/
974	dump_none,		/* bplist			*/
975	dump_none,		/* bplist header		*/
976	dump_none,		/* SPA space map header		*/
977	dump_none,		/* SPA space map		*/
978	dump_none,		/* ZIL intent log		*/
979	dump_dnode,		/* DMU dnode			*/
980	dump_dmu_objset,	/* DMU objset			*/
981	dump_dsl_dir,		/* DSL directory		*/
982	dump_zap,		/* DSL directory child map	*/
983	dump_zap,		/* DSL dataset snap map		*/
984	dump_zap,		/* DSL props			*/
985	dump_dsl_dataset,	/* DSL dataset			*/
986	dump_znode,		/* ZFS znode			*/
987	dump_acl,		/* ZFS V0 ACL			*/
988	dump_uint8,		/* ZFS plain file		*/
989	dump_zpldir,		/* ZFS directory		*/
990	dump_zap,		/* ZFS master node		*/
991	dump_zap,		/* ZFS delete queue		*/
992	dump_uint8,		/* zvol object			*/
993	dump_zap,		/* zvol prop			*/
994	dump_uint8,		/* other uint8[]		*/
995	dump_uint64,		/* other uint64[]		*/
996	dump_zap,		/* other ZAP			*/
997	dump_zap,		/* persistent error log		*/
998	dump_uint8,		/* SPA history			*/
999	dump_uint64,		/* SPA history offsets		*/
1000	dump_zap,		/* Pool properties		*/
1001	dump_zap,		/* DSL permissions		*/
1002	dump_acl,		/* ZFS ACL			*/
1003	dump_uint8,		/* ZFS SYSACL			*/
1004	dump_none,		/* FUID nvlist			*/
1005	dump_packed_nvlist,	/* FUID nvlist size		*/
1006};
1007
1008static void
1009dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1010{
1011	dmu_buf_t *db = NULL;
1012	dmu_object_info_t doi;
1013	dnode_t *dn;
1014	void *bonus = NULL;
1015	size_t bsize = 0;
1016	char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1017	char aux[50];
1018	int error;
1019
1020	if (*print_header) {
1021		(void) printf("\n    Object  lvl   iblk   dblk  lsize"
1022		    "  asize  type\n");
1023		*print_header = 0;
1024	}
1025
1026	if (object == 0) {
1027		dn = os->os->os_meta_dnode;
1028	} else {
1029		error = dmu_bonus_hold(os, object, FTAG, &db);
1030		if (error)
1031			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1032			    object, error);
1033		bonus = db->db_data;
1034		bsize = db->db_size;
1035		dn = ((dmu_buf_impl_t *)db)->db_dnode;
1036	}
1037	dmu_object_info_from_dnode(dn, &doi);
1038
1039	nicenum(doi.doi_metadata_block_size, iblk);
1040	nicenum(doi.doi_data_block_size, dblk);
1041	nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1042	    lsize);
1043	nicenum(doi.doi_physical_blks << 9, asize);
1044	nicenum(doi.doi_bonus_size, bonus_size);
1045
1046	aux[0] = '\0';
1047
1048	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1049		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1050		    zio_checksum_table[doi.doi_checksum].ci_name);
1051	}
1052
1053	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1054		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1055		    zio_compress_table[doi.doi_compress].ci_name);
1056	}
1057
1058	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1059	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1060	    asize, dmu_ot[doi.doi_type].ot_name, aux);
1061
1062	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1063		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1064		    "", "", "", "", bonus_size, "bonus",
1065		    dmu_ot[doi.doi_bonus_type].ot_name);
1066	}
1067
1068	if (verbosity >= 4) {
1069		object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1070		object_viewer[doi.doi_type](os, object, NULL, 0);
1071		*print_header = 1;
1072	}
1073
1074	if (verbosity >= 5)
1075		dump_indirect(os, object, NULL, 0);
1076
1077	if (verbosity >= 5) {
1078		/*
1079		 * Report the list of segments that comprise the object.
1080		 */
1081		uint64_t start = 0;
1082		uint64_t end;
1083		uint64_t blkfill = 1;
1084		int minlvl = 1;
1085
1086		if (dn->dn_type == DMU_OT_DNODE) {
1087			minlvl = 0;
1088			blkfill = DNODES_PER_BLOCK;
1089		}
1090
1091		for (;;) {
1092			error = dnode_next_offset(dn, B_FALSE, &start, minlvl,
1093			    blkfill, 0);
1094			if (error)
1095				break;
1096			end = start;
1097			error = dnode_next_offset(dn, B_TRUE, &end, minlvl,
1098			    blkfill, 0);
1099			nicenum(end - start, segsize);
1100			(void) printf("\t\tsegment [%016llx, %016llx)"
1101			    " size %5s\n", (u_longlong_t)start,
1102			    (u_longlong_t)end, segsize);
1103			if (error)
1104				break;
1105			start = end;
1106		}
1107	}
1108
1109	if (db != NULL)
1110		dmu_buf_rele(db, FTAG);
1111}
1112
1113static char *objset_types[DMU_OST_NUMTYPES] = {
1114	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1115
1116/*ARGSUSED*/
1117static void
1118dump_dir(objset_t *os)
1119{
1120	dmu_objset_stats_t dds;
1121	uint64_t object, object_count;
1122	uint64_t refdbytes, usedobjs, scratch;
1123	char numbuf[8];
1124	char blkbuf[BP_SPRINTF_LEN];
1125	char osname[MAXNAMELEN];
1126	char *type = "UNKNOWN";
1127	int verbosity = dump_opt['d'];
1128	int print_header = 1;
1129	int i, error;
1130
1131	dmu_objset_fast_stat(os, &dds);
1132
1133	if (dds.dds_type < DMU_OST_NUMTYPES)
1134		type = objset_types[dds.dds_type];
1135
1136	if (dds.dds_type == DMU_OST_META) {
1137		dds.dds_creation_txg = TXG_INITIAL;
1138		usedobjs = os->os->os_rootbp->blk_fill;
1139		refdbytes =
1140		    os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes;
1141	} else {
1142		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1143	}
1144
1145	ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1146
1147	nicenum(refdbytes, numbuf);
1148
1149	if (verbosity >= 4) {
1150		(void) strcpy(blkbuf, ", rootbp ");
1151		sprintf_blkptr(blkbuf + strlen(blkbuf),
1152		    BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1153	} else {
1154		blkbuf[0] = '\0';
1155	}
1156
1157	dmu_objset_name(os, osname);
1158
1159	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1160	    "%s, %llu objects%s\n",
1161	    osname, type, (u_longlong_t)dmu_objset_id(os),
1162	    (u_longlong_t)dds.dds_creation_txg,
1163	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1164
1165	dump_intent_log(dmu_objset_zil(os));
1166
1167	if (dmu_objset_ds(os) != NULL)
1168		dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1169		    dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1170
1171	if (verbosity < 2)
1172		return;
1173
1174	if (zopt_objects != 0) {
1175		for (i = 0; i < zopt_objects; i++)
1176			dump_object(os, zopt_object[i], verbosity,
1177			    &print_header);
1178		(void) printf("\n");
1179		return;
1180	}
1181
1182	dump_object(os, 0, verbosity, &print_header);
1183	object_count = 1;
1184
1185	object = 0;
1186	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1187		dump_object(os, object, verbosity, &print_header);
1188		object_count++;
1189	}
1190
1191	ASSERT3U(object_count, ==, usedobjs);
1192
1193	(void) printf("\n");
1194
1195	if (error != ESRCH)
1196		fatal("dmu_object_next() = %d", error);
1197}
1198
1199static void
1200dump_uberblock(uberblock_t *ub)
1201{
1202	time_t timestamp = ub->ub_timestamp;
1203
1204	(void) printf("Uberblock\n\n");
1205	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1206	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1207	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1208	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1209	(void) printf("\ttimestamp = %llu UTC = %s",
1210	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1211	if (dump_opt['u'] >= 3) {
1212		char blkbuf[BP_SPRINTF_LEN];
1213		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1214		(void) printf("\trootbp = %s\n", blkbuf);
1215	}
1216	(void) printf("\n");
1217}
1218
1219static void
1220dump_config(const char *pool)
1221{
1222	spa_t *spa = NULL;
1223
1224	mutex_enter(&spa_namespace_lock);
1225	while ((spa = spa_next(spa)) != NULL) {
1226		if (pool == NULL)
1227			(void) printf("%s\n", spa_name(spa));
1228		if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1229			dump_nvlist(spa->spa_config, 4);
1230	}
1231	mutex_exit(&spa_namespace_lock);
1232}
1233
1234static void
1235dump_label(const char *dev)
1236{
1237	int fd;
1238	vdev_label_t label;
1239	char *buf = label.vl_vdev_phys.vp_nvlist;
1240	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1241	struct stat64 statbuf;
1242	uint64_t psize;
1243	int l;
1244
1245	if ((fd = open64(dev, O_RDONLY)) < 0) {
1246		(void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1247		exit(1);
1248	}
1249
1250	if (fstat64(fd, &statbuf) != 0) {
1251		(void) printf("failed to stat '%s': %s\n", dev,
1252		    strerror(errno));
1253		exit(1);
1254	}
1255
1256	psize = statbuf.st_size;
1257	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1258
1259	for (l = 0; l < VDEV_LABELS; l++) {
1260
1261		nvlist_t *config = NULL;
1262
1263		(void) printf("--------------------------------------------\n");
1264		(void) printf("LABEL %d\n", l);
1265		(void) printf("--------------------------------------------\n");
1266
1267		if (pread64(fd, &label, sizeof (label),
1268		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1269			(void) printf("failed to read label %d\n", l);
1270			continue;
1271		}
1272
1273		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1274			(void) printf("failed to unpack label %d\n", l);
1275			continue;
1276		}
1277		dump_nvlist(config, 4);
1278		nvlist_free(config);
1279	}
1280}
1281
1282/*ARGSUSED*/
1283static int
1284dump_one_dir(char *dsname, void *arg)
1285{
1286	int error;
1287	objset_t *os;
1288
1289	error = dmu_objset_open(dsname, DMU_OST_ANY,
1290	    DS_MODE_STANDARD | DS_MODE_READONLY, &os);
1291	if (error) {
1292		(void) printf("Could not open %s\n", dsname);
1293		return (0);
1294	}
1295	dump_dir(os);
1296	dmu_objset_close(os);
1297	fuid_table_destroy();
1298	return (0);
1299}
1300
1301static void
1302zdb_space_map_load(spa_t *spa)
1303{
1304	vdev_t *rvd = spa->spa_root_vdev;
1305	vdev_t *vd;
1306	int c, m, error;
1307
1308	for (c = 0; c < rvd->vdev_children; c++) {
1309		vd = rvd->vdev_child[c];
1310		for (m = 0; m < vd->vdev_ms_count; m++) {
1311			metaslab_t *msp = vd->vdev_ms[m];
1312			mutex_enter(&msp->ms_lock);
1313			error = space_map_load(&msp->ms_allocmap[0], NULL,
1314			    SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset);
1315			mutex_exit(&msp->ms_lock);
1316			if (error)
1317				fatal("%s bad space map #%d, error %d",
1318				    spa->spa_name, c, error);
1319		}
1320	}
1321}
1322
1323static int
1324zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb)
1325{
1326	dva_t *dva = bp->blk_dva;
1327	vdev_t *vd;
1328	metaslab_t *msp;
1329	space_map_t *allocmap, *freemap;
1330	int error;
1331	int d;
1332	blkptr_t blk = *bp;
1333
1334	for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1335		uint64_t vdev = DVA_GET_VDEV(&dva[d]);
1336		uint64_t offset = DVA_GET_OFFSET(&dva[d]);
1337		uint64_t size = DVA_GET_ASIZE(&dva[d]);
1338
1339		if ((vd = vdev_lookup_top(spa, vdev)) == NULL)
1340			return (ENXIO);
1341
1342		if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count)
1343			return (ENXIO);
1344
1345		msp = vd->vdev_ms[offset >> vd->vdev_ms_shift];
1346		allocmap = &msp->ms_allocmap[0];
1347		freemap = &msp->ms_freemap[0];
1348
1349		/* Prepare our copy of the bp in case we need to read GBHs */
1350		if (DVA_GET_GANG(&dva[d])) {
1351			size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE);
1352			DVA_SET_ASIZE(&blk.blk_dva[d], size);
1353			DVA_SET_GANG(&blk.blk_dva[d], 0);
1354		}
1355
1356		mutex_enter(&msp->ms_lock);
1357		if (space_map_contains(freemap, offset, size)) {
1358			mutex_exit(&msp->ms_lock);
1359			return (EAGAIN);	/* allocated more than once */
1360		}
1361
1362		if (!space_map_contains(allocmap, offset, size)) {
1363			mutex_exit(&msp->ms_lock);
1364			return (ESTALE);	/* not allocated at all */
1365		}
1366
1367		space_map_remove(allocmap, offset, size);
1368		space_map_add(freemap, offset, size);
1369
1370		mutex_exit(&msp->ms_lock);
1371	}
1372
1373	if (BP_IS_GANG(bp)) {
1374		zio_gbh_phys_t gbh;
1375		int g;
1376
1377		/* LINTED - compile time assert */
1378		ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE);
1379
1380		BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER);
1381		BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE);
1382		BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE);
1383		BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF);
1384		error = zio_wait(zio_read(NULL, spa, &blk, &gbh,
1385		    SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ,
1386		    ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb));
1387		if (error)
1388			return (error);
1389		if (BP_SHOULD_BYTESWAP(&blk))
1390			byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE);
1391		for (g = 0; g < SPA_GBH_NBLKPTRS; g++) {
1392			if (BP_IS_HOLE(&gbh.zg_blkptr[g]))
1393				break;
1394			error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb);
1395			if (error)
1396				return (error);
1397		}
1398	}
1399
1400	return (0);
1401}
1402
1403static void
1404zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1405{
1406	metaslab_t *msp;
1407
1408	/* LINTED */
1409	msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0]));
1410
1411	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1412	    (u_longlong_t)msp->ms_group->mg_vd->vdev_id,
1413	    (u_longlong_t)start,
1414	    (u_longlong_t)size);
1415}
1416
1417static void
1418zdb_space_map_unload(spa_t *spa)
1419{
1420	vdev_t *rvd = spa->spa_root_vdev;
1421	vdev_t *vd;
1422	int c, m;
1423
1424	for (c = 0; c < rvd->vdev_children; c++) {
1425		vd = rvd->vdev_child[c];
1426		for (m = 0; m < vd->vdev_ms_count; m++) {
1427			metaslab_t *msp = vd->vdev_ms[m];
1428			mutex_enter(&msp->ms_lock);
1429			space_map_vacate(&msp->ms_allocmap[0], zdb_leak,
1430			    &msp->ms_allocmap[0]);
1431			space_map_unload(&msp->ms_allocmap[0]);
1432			space_map_vacate(&msp->ms_freemap[0], NULL, NULL);
1433			mutex_exit(&msp->ms_lock);
1434		}
1435	}
1436}
1437
1438static void
1439zdb_refresh_ubsync(spa_t *spa)
1440{
1441	uberblock_t ub = { 0 };
1442	vdev_t *rvd = spa->spa_root_vdev;
1443	zio_t *zio;
1444
1445	/*
1446	 * Reload the uberblock.
1447	 */
1448	zio = zio_root(spa, NULL, NULL,
1449	    ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE);
1450	vdev_uberblock_load(zio, rvd, &ub);
1451	(void) zio_wait(zio);
1452
1453	if (ub.ub_txg != 0)
1454		spa->spa_ubsync = ub;
1455}
1456
1457/*
1458 * Verify that the sum of the sizes of all blocks in the pool adds up
1459 * to the SPA's sa_alloc total.
1460 */
1461typedef struct zdb_blkstats {
1462	uint64_t	zb_asize;
1463	uint64_t	zb_lsize;
1464	uint64_t	zb_psize;
1465	uint64_t	zb_count;
1466} zdb_blkstats_t;
1467
1468#define	DMU_OT_DEFERRED	DMU_OT_NONE
1469#define	DMU_OT_TOTAL	DMU_OT_NUMTYPES
1470
1471#define	ZB_TOTAL	ZB_MAXLEVEL
1472
1473typedef struct zdb_cb {
1474	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1475	uint64_t	zcb_errors[256];
1476	traverse_blk_cache_t *zcb_cache;
1477	int		zcb_readfails;
1478	int		zcb_haderrors;
1479} zdb_cb_t;
1480
1481static void
1482zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type)
1483{
1484	int i, error;
1485
1486	for (i = 0; i < 4; i++) {
1487		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1488		int t = (i & 1) ? type : DMU_OT_TOTAL;
1489		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1490
1491		zb->zb_asize += BP_GET_ASIZE(bp);
1492		zb->zb_lsize += BP_GET_LSIZE(bp);
1493		zb->zb_psize += BP_GET_PSIZE(bp);
1494		zb->zb_count++;
1495	}
1496
1497	if (dump_opt['L'])
1498		return;
1499
1500	error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark);
1501
1502	if (error == 0)
1503		return;
1504
1505	if (error == EAGAIN)
1506		(void) fatal("double-allocation, bp=%p", bp);
1507
1508	if (error == ESTALE)
1509		(void) fatal("reference to freed block, bp=%p", bp);
1510
1511	(void) fatal("fatal error %d in bp %p", error, bp);
1512}
1513
1514static int
1515zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg)
1516{
1517	zbookmark_t *zb = &bc->bc_bookmark;
1518	zdb_cb_t *zcb = arg;
1519	blkptr_t *bp = &bc->bc_blkptr;
1520	dmu_object_type_t type = BP_GET_TYPE(bp);
1521	char blkbuf[BP_SPRINTF_LEN];
1522	int error = 0;
1523
1524	if (bc->bc_errno) {
1525		if (zcb->zcb_readfails++ < 10 && dump_opt['L']) {
1526			zdb_refresh_ubsync(spa);
1527			error = EAGAIN;
1528		} else {
1529			zcb->zcb_haderrors = 1;
1530			zcb->zcb_errors[bc->bc_errno]++;
1531			error = ERESTART;
1532		}
1533
1534		if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno))
1535			sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1536		else
1537			blkbuf[0] = '\0';
1538
1539		(void) printf("zdb_blkptr_cb: Got error %d reading "
1540		    "<%llu, %llu, %lld, %llx> %s -- %s\n",
1541		    bc->bc_errno,
1542		    (u_longlong_t)zb->zb_objset,
1543		    (u_longlong_t)zb->zb_object,
1544		    (u_longlong_t)zb->zb_level,
1545		    (u_longlong_t)zb->zb_blkid,
1546		    blkbuf,
1547		    error == EAGAIN ? "retrying" : "skipping");
1548
1549		return (error);
1550	}
1551
1552	zcb->zcb_readfails = 0;
1553
1554	ASSERT(!BP_IS_HOLE(bp));
1555
1556	if (dump_opt['b'] >= 4) {
1557		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1558		(void) printf("objset %llu object %llu offset 0x%llx %s\n",
1559		    (u_longlong_t)zb->zb_objset,
1560		    (u_longlong_t)zb->zb_object,
1561		    (u_longlong_t)blkid2offset(bc->bc_dnode,
1562		    zb->zb_level, zb->zb_blkid), blkbuf);
1563	}
1564
1565	zdb_count_block(spa, zcb, bp, type);
1566
1567	return (0);
1568}
1569
1570static int
1571dump_block_stats(spa_t *spa)
1572{
1573	traverse_handle_t *th;
1574	zdb_cb_t zcb = { 0 };
1575	traverse_blk_cache_t dummy_cache = { 0 };
1576	zdb_blkstats_t *zb, *tzb;
1577	uint64_t alloc, space, logalloc;
1578	vdev_t *rvd = spa->spa_root_vdev;
1579	int leaks = 0;
1580	int advance = zdb_advance;
1581	int c, e, flags;
1582
1583	zcb.zcb_cache = &dummy_cache;
1584
1585	if (dump_opt['c'])
1586		advance |= ADVANCE_DATA;
1587
1588	advance |= ADVANCE_PRUNE | ADVANCE_ZIL;
1589
1590	(void) printf("\nTraversing all blocks to %sverify"
1591	    " nothing leaked ...\n",
1592	    dump_opt['c'] ? "verify checksums and " : "");
1593
1594	/*
1595	 * Load all space maps.  As we traverse the pool, if we find a block
1596	 * that's not in its space map, that indicates a double-allocation,
1597	 * reference to a freed block, or an unclaimed block.  Otherwise we
1598	 * remove the block from the space map.  If the space maps are not
1599	 * empty when we're done, that indicates leaked blocks.
1600	 */
1601	if (!dump_opt['L'])
1602		zdb_space_map_load(spa);
1603
1604	/*
1605	 * If there's a deferred-free bplist, process that first.
1606	 */
1607	if (spa->spa_sync_bplist_obj != 0) {
1608		bplist_t *bpl = &spa->spa_sync_bplist;
1609		blkptr_t blk;
1610		uint64_t itor = 0;
1611
1612		VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1613		    spa->spa_sync_bplist_obj));
1614
1615		while (bplist_iterate(bpl, &itor, &blk) == 0) {
1616			if (dump_opt['b'] >= 4) {
1617				char blkbuf[BP_SPRINTF_LEN];
1618				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1619				(void) printf("[%s] %s\n",
1620				    "deferred free", blkbuf);
1621			}
1622			zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1623		}
1624
1625		bplist_close(bpl);
1626	}
1627
1628	/*
1629	 * Now traverse the pool.  If we're reading all data to verify
1630	 * checksums, do a scrubbing read so that we validate all copies.
1631	 */
1632	flags = ZIO_FLAG_CANFAIL;
1633	if (advance & ADVANCE_DATA)
1634		flags |= ZIO_FLAG_SCRUB;
1635	th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags);
1636	th->th_noread = zdb_noread;
1637
1638	traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES);
1639
1640	while (traverse_more(th) == EAGAIN)
1641		continue;
1642
1643	traverse_fini(th);
1644
1645	if (zcb.zcb_haderrors) {
1646		(void) printf("\nError counts:\n\n");
1647		(void) printf("\t%5s  %s\n", "errno", "count");
1648		for (e = 0; e < 256; e++) {
1649			if (zcb.zcb_errors[e] != 0) {
1650				(void) printf("\t%5d  %llu\n",
1651				    e, (u_longlong_t)zcb.zcb_errors[e]);
1652			}
1653		}
1654	}
1655
1656	/*
1657	 * Report any leaked segments.
1658	 */
1659	if (!dump_opt['L'])
1660		zdb_space_map_unload(spa);
1661
1662	if (dump_opt['L'])
1663		(void) printf("\n\n *** Live pool traversal; "
1664		    "block counts are only approximate ***\n\n");
1665
1666	alloc = spa_get_alloc(spa);
1667	space = spa_get_space(spa);
1668
1669	/*
1670	 * Log blocks allocated from a separate log device don't count
1671	 * as part of the normal pool space; factor them in here.
1672	 */
1673	logalloc = 0;
1674
1675	for (c = 0; c < rvd->vdev_children; c++)
1676		if (rvd->vdev_child[c]->vdev_islog)
1677			logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc;
1678
1679	tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
1680
1681	if (tzb->zb_asize == alloc + logalloc) {
1682		(void) printf("\n\tNo leaks (block sum matches space"
1683		    " maps exactly)\n");
1684	} else {
1685		(void) printf("block traversal size %llu != alloc %llu "
1686		    "(leaked %lld)\n",
1687		    (u_longlong_t)tzb->zb_asize,
1688		    (u_longlong_t)alloc + logalloc,
1689		    (u_longlong_t)(alloc + logalloc - tzb->zb_asize));
1690		leaks = 1;
1691	}
1692
1693	if (tzb->zb_count == 0)
1694		return (2);
1695
1696	(void) printf("\n");
1697	(void) printf("\tbp count:      %10llu\n",
1698	    (u_longlong_t)tzb->zb_count);
1699	(void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1700	    (u_longlong_t)tzb->zb_lsize,
1701	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1702	(void) printf("\tbp physical:   %10llu\t avg:"
1703	    " %6llu\tcompression: %6.2f\n",
1704	    (u_longlong_t)tzb->zb_psize,
1705	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1706	    (double)tzb->zb_lsize / tzb->zb_psize);
1707	(void) printf("\tbp allocated:  %10llu\t avg:"
1708	    " %6llu\tcompression: %6.2f\n",
1709	    (u_longlong_t)tzb->zb_asize,
1710	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1711	    (double)tzb->zb_lsize / tzb->zb_asize);
1712	(void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1713	    (u_longlong_t)alloc, 100.0 * alloc / space);
1714
1715	if (dump_opt['b'] >= 2) {
1716		int l, t, level;
1717		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1718		    "\t  avg\t comp\t%%Total\tType\n");
1719
1720		for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1721			char csize[6], lsize[6], psize[6], asize[6], avg[6];
1722			char *typename;
1723
1724			typename = t == DMU_OT_DEFERRED ? "deferred free" :
1725			    t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1726
1727			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1728				(void) printf("%6s\t%5s\t%5s\t%5s"
1729				    "\t%5s\t%5s\t%6s\t%s\n",
1730				    "-",
1731				    "-",
1732				    "-",
1733				    "-",
1734				    "-",
1735				    "-",
1736				    "-",
1737				    typename);
1738				continue;
1739			}
1740
1741			for (l = ZB_TOTAL - 1; l >= -1; l--) {
1742				level = (l == -1 ? ZB_TOTAL : l);
1743				zb = &zcb.zcb_type[level][t];
1744
1745				if (zb->zb_asize == 0)
1746					continue;
1747
1748				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1749					continue;
1750
1751				if (level == 0 && zb->zb_asize ==
1752				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1753					continue;
1754
1755				nicenum(zb->zb_count, csize);
1756				nicenum(zb->zb_lsize, lsize);
1757				nicenum(zb->zb_psize, psize);
1758				nicenum(zb->zb_asize, asize);
1759				nicenum(zb->zb_asize / zb->zb_count, avg);
1760
1761				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1762				    "\t%5.2f\t%6.2f\t",
1763				    csize, lsize, psize, asize, avg,
1764				    (double)zb->zb_lsize / zb->zb_psize,
1765				    100.0 * zb->zb_asize / tzb->zb_asize);
1766
1767				if (level == ZB_TOTAL)
1768					(void) printf("%s\n", typename);
1769				else
1770					(void) printf("    L%d %s\n",
1771					    level, typename);
1772			}
1773		}
1774	}
1775
1776	(void) printf("\n");
1777
1778	if (leaks)
1779		return (2);
1780
1781	if (zcb.zcb_haderrors)
1782		return (3);
1783
1784	return (0);
1785}
1786
1787static void
1788dump_zpool(spa_t *spa)
1789{
1790	dsl_pool_t *dp = spa_get_dsl(spa);
1791	int rc = 0;
1792
1793	spa_config_enter(spa, RW_READER, FTAG);
1794
1795	if (dump_opt['u'])
1796		dump_uberblock(&spa->spa_uberblock);
1797
1798	if (dump_opt['d'] || dump_opt['i']) {
1799		dump_dir(dp->dp_meta_objset);
1800		if (dump_opt['d'] >= 3) {
1801			dump_bplist(dp->dp_meta_objset,
1802			    spa->spa_sync_bplist_obj, "Deferred frees");
1803			dump_dtl(spa->spa_root_vdev, 0);
1804			dump_metaslabs(spa);
1805		}
1806		(void) dmu_objset_find(spa->spa_name, dump_one_dir, NULL,
1807		    DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1808	}
1809
1810	if (dump_opt['b'] || dump_opt['c'])
1811		rc = dump_block_stats(spa);
1812
1813	if (dump_opt['s'])
1814		show_pool_stats(spa);
1815
1816	spa_config_exit(spa, FTAG);
1817
1818	if (rc != 0)
1819		exit(rc);
1820}
1821
1822#define	ZDB_FLAG_CHECKSUM	0x0001
1823#define	ZDB_FLAG_DECOMPRESS	0x0002
1824#define	ZDB_FLAG_BSWAP		0x0004
1825#define	ZDB_FLAG_GBH		0x0008
1826#define	ZDB_FLAG_INDIRECT	0x0010
1827#define	ZDB_FLAG_PHYS		0x0020
1828#define	ZDB_FLAG_RAW		0x0040
1829#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
1830
1831int flagbits[256];
1832
1833static void
1834zdb_print_blkptr(blkptr_t *bp, int flags)
1835{
1836	dva_t *dva = bp->blk_dva;
1837	int d;
1838
1839	if (flags & ZDB_FLAG_BSWAP)
1840		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1841	/*
1842	 * Super-ick warning:  This code is also duplicated in
1843	 * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1844	 * replication, too.
1845	 */
1846	for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1847		(void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1848		    (longlong_t)DVA_GET_VDEV(&dva[d]),
1849		    (longlong_t)DVA_GET_OFFSET(&dva[d]));
1850		(void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1851		    "ASIZE: %llx\n", d,
1852		    DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1853		    (longlong_t)DVA_GET_GRID(&dva[d]),
1854		    (longlong_t)DVA_GET_ASIZE(&dva[d]));
1855		(void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1856		    (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1857		    (longlong_t)DVA_GET_OFFSET(&dva[d]),
1858		    (longlong_t)BP_GET_PSIZE(bp),
1859		    BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1860		    !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1861		    "d" : "",
1862		    DVA_GET_GANG(&dva[d]) ? "g" : "",
1863		    BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1864	}
1865	(void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1866	    (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1867	(void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1868	    BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1869	    dmu_ot[BP_GET_TYPE(bp)].ot_name);
1870	(void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1871	    (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1872	    (u_longlong_t)bp->blk_fill);
1873	(void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1874	    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1875	    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1876	(void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1877	    (u_longlong_t)bp->blk_cksum.zc_word[0],
1878	    (u_longlong_t)bp->blk_cksum.zc_word[1],
1879	    (u_longlong_t)bp->blk_cksum.zc_word[2],
1880	    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1881}
1882
1883static void
1884zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1885{
1886	int i;
1887
1888	for (i = 0; i < nbps; i++)
1889		zdb_print_blkptr(&bp[i], flags);
1890}
1891
1892static void
1893zdb_dump_gbh(void *buf, int flags)
1894{
1895	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1896}
1897
1898static void
1899zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1900{
1901	if (flags & ZDB_FLAG_BSWAP)
1902		byteswap_uint64_array(buf, size);
1903	(void) write(2, buf, size);
1904}
1905
1906static void
1907zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1908{
1909	uint64_t *d = (uint64_t *)buf;
1910	int nwords = size / sizeof (uint64_t);
1911	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1912	int i, j;
1913	char *hdr, *c;
1914
1915
1916	if (do_bswap)
1917		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1918	else
1919		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1920
1921	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1922
1923	for (i = 0; i < nwords; i += 2) {
1924		(void) printf("%06llx:  %016llx  %016llx  ",
1925		    (u_longlong_t)(i * sizeof (uint64_t)),
1926		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1927		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1928
1929		c = (char *)&d[i];
1930		for (j = 0; j < 2 * sizeof (uint64_t); j++)
1931			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
1932		(void) printf("\n");
1933	}
1934}
1935
1936/*
1937 * There are two acceptable formats:
1938 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
1939 *	child[.child]*    - For example: 0.1.1
1940 *
1941 * The second form can be used to specify arbitrary vdevs anywhere
1942 * in the heirarchy.  For example, in a pool with a mirror of
1943 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1944 */
1945static vdev_t *
1946zdb_vdev_lookup(vdev_t *vdev, char *path)
1947{
1948	char *s, *p, *q;
1949	int i;
1950
1951	if (vdev == NULL)
1952		return (NULL);
1953
1954	/* First, assume the x.x.x.x format */
1955	i = (int)strtoul(path, &s, 10);
1956	if (s == path || (s && *s != '.' && *s != '\0'))
1957		goto name;
1958	if (i < 0 || i >= vdev->vdev_children)
1959		return (NULL);
1960
1961	vdev = vdev->vdev_child[i];
1962	if (*s == '\0')
1963		return (vdev);
1964	return (zdb_vdev_lookup(vdev, s+1));
1965
1966name:
1967	for (i = 0; i < vdev->vdev_children; i++) {
1968		vdev_t *vc = vdev->vdev_child[i];
1969
1970		if (vc->vdev_path == NULL) {
1971			vc = zdb_vdev_lookup(vc, path);
1972			if (vc == NULL)
1973				continue;
1974			else
1975				return (vc);
1976		}
1977
1978		p = strrchr(vc->vdev_path, '/');
1979		p = p ? p + 1 : vc->vdev_path;
1980		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
1981
1982		if (strcmp(vc->vdev_path, path) == 0)
1983			return (vc);
1984		if (strcmp(p, path) == 0)
1985			return (vc);
1986		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
1987			return (vc);
1988	}
1989
1990	return (NULL);
1991}
1992
1993/*
1994 * Read a block from a pool and print it out.  The syntax of the
1995 * block descriptor is:
1996 *
1997 *	pool:vdev_specifier:offset:size[:flags]
1998 *
1999 *	pool           - The name of the pool you wish to read from
2000 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2001 *	offset         - offset, in hex, in bytes
2002 *	size           - Amount of data to read, in hex, in bytes
2003 *	flags          - A string of characters specifying options
2004 *		 b: Decode a blkptr at given offset within block
2005 *		*c: Calculate and display checksums
2006 *		*d: Decompress data before dumping
2007 *		 e: Byteswap data before dumping
2008 *		*g: Display data as a gang block header
2009 *		*i: Display as an indirect block
2010 *		 p: Do I/O to physical offset
2011 *		 r: Dump raw data to stdout
2012 *
2013 *              * = not yet implemented
2014 */
2015static void
2016zdb_read_block(char *thing, spa_t **spap)
2017{
2018	spa_t *spa = *spap;
2019	int flags = 0;
2020	uint64_t offset = 0, size = 0, blkptr_offset = 0;
2021	zio_t *zio;
2022	vdev_t *vd;
2023	void *buf;
2024	char *s, *p, *dup, *spa_name, *vdev, *flagstr;
2025	int i, error, zio_flags;
2026
2027	dup = strdup(thing);
2028	s = strtok(dup, ":");
2029	spa_name = s ? s : "";
2030	s = strtok(NULL, ":");
2031	vdev = s ? s : "";
2032	s = strtok(NULL, ":");
2033	offset = strtoull(s ? s : "", NULL, 16);
2034	s = strtok(NULL, ":");
2035	size = strtoull(s ? s : "", NULL, 16);
2036	s = strtok(NULL, ":");
2037	flagstr = s ? s : "";
2038
2039	s = NULL;
2040	if (size == 0)
2041		s = "size must not be zero";
2042	if (!IS_P2ALIGNED(size, DEV_BSIZE))
2043		s = "size must be a multiple of sector size";
2044	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2045		s = "offset must be a multiple of sector size";
2046	if (s) {
2047		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2048		free(dup);
2049		return;
2050	}
2051
2052	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2053		for (i = 0; flagstr[i]; i++) {
2054			int bit = flagbits[(uchar_t)flagstr[i]];
2055
2056			if (bit == 0) {
2057				(void) printf("***Invalid flag: %c\n",
2058				    flagstr[i]);
2059				continue;
2060			}
2061			flags |= bit;
2062
2063			/* If it's not something with an argument, keep going */
2064			if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2065			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
2066				continue;
2067
2068			p = &flagstr[i + 1];
2069			if (bit == ZDB_FLAG_PRINT_BLKPTR)
2070				blkptr_offset = strtoull(p, &p, 16);
2071			if (*p != ':' && *p != '\0') {
2072				(void) printf("***Invalid flag arg: '%s'\n", s);
2073				free(dup);
2074				return;
2075			}
2076		}
2077	}
2078
2079	if (spa == NULL || spa->spa_name == NULL ||
2080	    strcmp(spa->spa_name, spa_name)) {
2081		if (spa && spa->spa_name)
2082			spa_close(spa, (void *)zdb_read_block);
2083		error = spa_open(spa_name, spap, (void *)zdb_read_block);
2084		if (error)
2085			fatal("Failed to open pool '%s': %s",
2086			    spa_name, strerror(error));
2087		spa = *spap;
2088	}
2089
2090	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2091	if (vd == NULL) {
2092		(void) printf("***Invalid vdev: %s\n", vdev);
2093		free(dup);
2094		return;
2095	} else {
2096		if (vd->vdev_path)
2097			(void) printf("Found vdev: %s\n", vd->vdev_path);
2098		else
2099			(void) printf("Found vdev type: %s\n",
2100			    vd->vdev_ops->vdev_op_type);
2101	}
2102
2103	buf = umem_alloc(size, UMEM_NOFAIL);
2104
2105	zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2106	    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK;
2107
2108	if (flags & ZDB_FLAG_PHYS)
2109		zio_flags |= ZIO_FLAG_PHYSICAL;
2110
2111	zio = zio_root(spa, NULL, NULL, 0);
2112	/* XXX todo - cons up a BP so RAID-Z will be happy */
2113	zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2114	    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2115	error = zio_wait(zio);
2116
2117	if (error) {
2118		(void) printf("Read of %s failed, error: %d\n", thing, error);
2119		goto out;
2120	}
2121
2122	if (flags & ZDB_FLAG_PRINT_BLKPTR)
2123		zdb_print_blkptr((blkptr_t *)(void *)
2124		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2125	else if (flags & ZDB_FLAG_RAW)
2126		zdb_dump_block_raw(buf, size, flags);
2127	else if (flags & ZDB_FLAG_INDIRECT)
2128		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2129		    flags);
2130	else if (flags & ZDB_FLAG_GBH)
2131		zdb_dump_gbh(buf, flags);
2132	else
2133		zdb_dump_block(thing, buf, size, flags);
2134
2135out:
2136	umem_free(buf, size);
2137	free(dup);
2138}
2139
2140static boolean_t
2141nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2142{
2143	char *s;
2144
2145	verify(nvlist_lookup_string(config, name, &s) == 0);
2146	return (strcmp(s, tgt) == 0);
2147}
2148
2149static boolean_t
2150nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2151{
2152	uint64_t val;
2153
2154	verify(nvlist_lookup_uint64(config, name, &val) == 0);
2155	return (val == tgt);
2156}
2157
2158static boolean_t
2159vdev_child_guid_match(nvlist_t *vdev, uint64_t guid)
2160{
2161	nvlist_t **child;
2162	uint_t c, children;
2163
2164	verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2165	    &child, &children) == 0);
2166	for (c = 0; c < children; ++c)
2167		if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid))
2168			return (B_TRUE);
2169	return (B_FALSE);
2170}
2171
2172static boolean_t
2173vdev_child_string_match(nvlist_t *vdev, char *tgt)
2174{
2175	nvlist_t **child;
2176	uint_t c, children;
2177
2178	verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2179	    &child, &children) == 0);
2180	for (c = 0; c < children; ++c) {
2181		if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) ||
2182		    nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt))
2183			return (B_TRUE);
2184	}
2185	return (B_FALSE);
2186}
2187
2188static boolean_t
2189vdev_guid_match(nvlist_t *config, uint64_t guid)
2190{
2191	nvlist_t *nvroot;
2192
2193	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2194	    &nvroot) == 0);
2195
2196	return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) ||
2197	    vdev_child_guid_match(nvroot, guid));
2198}
2199
2200static boolean_t
2201vdev_string_match(nvlist_t *config, char *tgt)
2202{
2203	nvlist_t *nvroot;
2204
2205	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2206	    &nvroot) == 0);
2207
2208	return (vdev_child_string_match(nvroot, tgt));
2209}
2210
2211static boolean_t
2212pool_match(nvlist_t *config, char *tgt)
2213{
2214	uint64_t guid = strtoull(tgt, NULL, 0);
2215
2216	if (guid != 0) {
2217		return (
2218		    nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) ||
2219		    vdev_guid_match(config, guid));
2220	} else {
2221		return (
2222		    nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) ||
2223		    vdev_string_match(config, tgt));
2224	}
2225}
2226
2227static int
2228find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir,
2229    char *cachefile)
2230{
2231	nvlist_t *pools;
2232	int error = ENOENT;
2233	nvlist_t *match = NULL;
2234
2235	if (vdev_dir != NULL)
2236		pools = zpool_find_import(g_zfs, 1, &vdev_dir, B_TRUE);
2237	else if (cachefile != NULL)
2238		pools = zpool_find_import_cached(g_zfs, cachefile, B_TRUE);
2239	else
2240		pools = zpool_find_import(g_zfs, 0, NULL, B_TRUE);
2241
2242	if (pools != NULL) {
2243		nvpair_t *elem = NULL;
2244
2245		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2246			verify(nvpair_value_nvlist(elem, configp) == 0);
2247			if (pool_match(*configp, pool_id)) {
2248				if (match != NULL) {
2249					(void) fatal(
2250					    "More than one matching pool - "
2251					    "specify guid/devid/device path.");
2252				} else {
2253					match = *configp;
2254					error = 0;
2255				}
2256			}
2257		}
2258	}
2259
2260	*configp = error ? NULL : match;
2261
2262	return (error);
2263}
2264
2265int
2266main(int argc, char **argv)
2267{
2268	int i, c;
2269	struct rlimit rl = { 1024, 1024 };
2270	spa_t *spa;
2271	objset_t *os = NULL;
2272	char *endstr;
2273	int dump_all = 1;
2274	int verbose = 0;
2275	int error;
2276	int flag, set;
2277	int exported = 0;
2278	char *vdev_dir = NULL;
2279	char *cachefile = NULL;
2280
2281	(void) setrlimit(RLIMIT_NOFILE, &rl);
2282	(void) enable_extended_FILE_stdio(-1, -1);
2283
2284	dprintf_setup(&argc, argv);
2285
2286	while ((c = getopt(argc, argv, "udibcsvCLO:B:U:lRep:")) != -1) {
2287		switch (c) {
2288		case 'u':
2289		case 'd':
2290		case 'i':
2291		case 'b':
2292		case 'c':
2293		case 's':
2294		case 'C':
2295		case 'l':
2296		case 'R':
2297			dump_opt[c]++;
2298			dump_all = 0;
2299			break;
2300		case 'L':
2301			dump_opt[c]++;
2302			break;
2303		case 'O':
2304			endstr = optarg;
2305			if (endstr[0] == '!') {
2306				endstr++;
2307				set = 0;
2308			} else {
2309				set = 1;
2310			}
2311			if (strcmp(endstr, "post") == 0) {
2312				flag = ADVANCE_PRE;
2313				set = !set;
2314			} else if (strcmp(endstr, "pre") == 0) {
2315				flag = ADVANCE_PRE;
2316			} else if (strcmp(endstr, "prune") == 0) {
2317				flag = ADVANCE_PRUNE;
2318			} else if (strcmp(endstr, "data") == 0) {
2319				flag = ADVANCE_DATA;
2320			} else if (strcmp(endstr, "holes") == 0) {
2321				flag = ADVANCE_HOLES;
2322			} else {
2323				usage();
2324			}
2325			if (set)
2326				zdb_advance |= flag;
2327			else
2328				zdb_advance &= ~flag;
2329			break;
2330		case 'B':
2331			endstr = optarg - 1;
2332			zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0);
2333			zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0);
2334			zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0);
2335			zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16);
2336			(void) printf("simulating bad block "
2337			    "<%llu, %llu, %lld, %llx>\n",
2338			    (u_longlong_t)zdb_noread.zb_objset,
2339			    (u_longlong_t)zdb_noread.zb_object,
2340			    (u_longlong_t)zdb_noread.zb_level,
2341			    (u_longlong_t)zdb_noread.zb_blkid);
2342			break;
2343		case 'v':
2344			verbose++;
2345			break;
2346		case 'U':
2347			cachefile = optarg;
2348			break;
2349		case 'e':
2350			exported = 1;
2351			break;
2352		case 'p':
2353			vdev_dir = optarg;
2354			break;
2355		default:
2356			usage();
2357			break;
2358		}
2359	}
2360
2361	if (vdev_dir != NULL && exported == 0)
2362		(void) fatal("-p option requires use of -e\n");
2363
2364	kernel_init(FREAD);
2365	g_zfs = libzfs_init();
2366	ASSERT(g_zfs != NULL);
2367
2368	/*
2369	 * Disable vdev caching.  If we don't do this, live pool traversal
2370	 * won't make progress because it will never see disk updates.
2371	 */
2372	zfs_vdev_cache_size = 0;
2373
2374	for (c = 0; c < 256; c++) {
2375		if (dump_all && c != 'L' && c != 'l' && c != 'R')
2376			dump_opt[c] = 1;
2377		if (dump_opt[c])
2378			dump_opt[c] += verbose;
2379	}
2380
2381	argc -= optind;
2382	argv += optind;
2383
2384	if (argc < 1) {
2385		if (dump_opt['C']) {
2386			dump_config(NULL);
2387			return (0);
2388		}
2389		usage();
2390	}
2391
2392	if (dump_opt['l']) {
2393		dump_label(argv[0]);
2394		return (0);
2395	}
2396
2397	if (dump_opt['R']) {
2398		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2399		flagbits['c'] = ZDB_FLAG_CHECKSUM;
2400		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2401		flagbits['e'] = ZDB_FLAG_BSWAP;
2402		flagbits['g'] = ZDB_FLAG_GBH;
2403		flagbits['i'] = ZDB_FLAG_INDIRECT;
2404		flagbits['p'] = ZDB_FLAG_PHYS;
2405		flagbits['r'] = ZDB_FLAG_RAW;
2406
2407		spa = NULL;
2408		while (argv[0]) {
2409			zdb_read_block(argv[0], &spa);
2410			argv++;
2411			argc--;
2412		}
2413		if (spa)
2414			spa_close(spa, (void *)zdb_read_block);
2415		return (0);
2416	}
2417
2418	if (dump_opt['C'])
2419		dump_config(argv[0]);
2420
2421	if (exported == 0 && cachefile == NULL) {
2422		if (strchr(argv[0], '/') != NULL) {
2423			error = dmu_objset_open(argv[0], DMU_OST_ANY,
2424			    DS_MODE_STANDARD | DS_MODE_READONLY, &os);
2425		} else {
2426			error = spa_open(argv[0], &spa, FTAG);
2427		}
2428	} else {
2429		/*
2430		 * Check to see if the name refers to an exported zpool
2431		 */
2432		nvlist_t *exported_conf = NULL;
2433
2434		error = find_exported_zpool(argv[0], &exported_conf, vdev_dir,
2435		    cachefile);
2436		if (error == 0) {
2437			nvlist_t *nvl = NULL;
2438
2439			if (vdev_dir != NULL) {
2440				if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2441					error = ENOMEM;
2442				else if (nvlist_add_string(nvl,
2443				    zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2444				    vdev_dir) != 0)
2445					error = ENOMEM;
2446			}
2447
2448			if (error == 0)
2449				error = spa_import(argv[0], exported_conf, nvl);
2450			if (error == 0)
2451				error = spa_open(argv[0], &spa, FTAG);
2452
2453			nvlist_free(nvl);
2454		}
2455	}
2456
2457	if (error)
2458		fatal("can't open %s: %s", argv[0], strerror(error));
2459
2460	argv++;
2461	if (--argc > 0) {
2462		zopt_objects = argc;
2463		zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2464		for (i = 0; i < zopt_objects; i++) {
2465			errno = 0;
2466			zopt_object[i] = strtoull(argv[i], NULL, 0);
2467			if (zopt_object[i] == 0 && errno != 0)
2468				fatal("bad object number %s: %s",
2469				    argv[i], strerror(errno));
2470		}
2471	}
2472
2473	if (os != NULL) {
2474		dump_dir(os);
2475		dmu_objset_close(os);
2476	} else {
2477		dump_zpool(spa);
2478		spa_close(spa, FTAG);
2479	}
2480
2481	fuid_table_destroy();
2482
2483	libzfs_fini(g_zfs);
2484	kernel_fini();
2485
2486	return (0);
2487}
2488