zdb.c revision 2e55192768a98297f0a2b4c1b5dbc3f91771ac38
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#include <stdio.h>
27#include <stdio_ext.h>
28#include <stdlib.h>
29#include <ctype.h>
30#include <sys/zfs_context.h>
31#include <sys/spa.h>
32#include <sys/spa_impl.h>
33#include <sys/dmu.h>
34#include <sys/zap.h>
35#include <sys/fs/zfs.h>
36#include <sys/zfs_znode.h>
37#include <sys/vdev.h>
38#include <sys/vdev_impl.h>
39#include <sys/metaslab_impl.h>
40#include <sys/dmu_objset.h>
41#include <sys/dsl_dir.h>
42#include <sys/dsl_dataset.h>
43#include <sys/dsl_pool.h>
44#include <sys/dbuf.h>
45#include <sys/zil.h>
46#include <sys/zil_impl.h>
47#include <sys/stat.h>
48#include <sys/resource.h>
49#include <sys/dmu_traverse.h>
50#include <sys/zio_checksum.h>
51#include <sys/zio_compress.h>
52#include <sys/zfs_fuid.h>
53#include <sys/arc.h>
54#undef ZFS_MAXNAMELEN
55#undef verify
56#include <libzfs.h>
57
58const char cmdname[] = "zdb";
59uint8_t dump_opt[256];
60
61typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
62
63extern void dump_intent_log(zilog_t *);
64uint64_t *zopt_object = NULL;
65int zopt_objects = 0;
66libzfs_handle_t *g_zfs;
67boolean_t zdb_sig_user_data = B_TRUE;
68int zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
69
70/*
71 * These libumem hooks provide a reasonable set of defaults for the allocator's
72 * debugging facilities.
73 */
74const char *
75_umem_debug_init()
76{
77	return ("default,verbose"); /* $UMEM_DEBUG setting */
78}
79
80const char *
81_umem_logging_init(void)
82{
83	return ("fail,contents"); /* $UMEM_LOGGING setting */
84}
85
86static void
87usage(void)
88{
89	(void) fprintf(stderr,
90	    "Usage: %s [-udibcsvL] [-U cachefile_path] [-t txg]\n"
91	    "\t   [-S user:cksumalg] "
92	    "dataset [object...]\n"
93	    "       %s -C [pool]\n"
94	    "       %s -l dev\n"
95	    "       %s -R pool:vdev:offset:size:flags\n"
96	    "       %s [-p path_to_vdev_dir]\n"
97	    "       %s -e pool | GUID | devid ...\n",
98	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
99
100	(void) fprintf(stderr, "	-u uberblock\n");
101	(void) fprintf(stderr, "	-d datasets\n");
102	(void) fprintf(stderr, "        -C cached pool configuration\n");
103	(void) fprintf(stderr, "	-i intent logs\n");
104	(void) fprintf(stderr, "	-b block statistics\n");
105	(void) fprintf(stderr, "	-c checksum all data blocks\n");
106	(void) fprintf(stderr, "	-s report stats on zdb's I/O\n");
107	(void) fprintf(stderr, "	-S <user|all>:<cksum_alg|all> -- "
108	    "dump blkptr signatures\n");
109	(void) fprintf(stderr, "	-v verbose (applies to all others)\n");
110	(void) fprintf(stderr, "        -l dump label contents\n");
111	(void) fprintf(stderr, "        -L disable leak tracking (do not "
112	    "load spacemaps)\n");
113	(void) fprintf(stderr, "	-U cachefile_path -- use alternate "
114	    "cachefile\n");
115	(void) fprintf(stderr, "        -R read and display block from a "
116	    "device\n");
117	(void) fprintf(stderr, "        -e Pool is exported/destroyed/"
118	    "has altroot\n");
119	(void) fprintf(stderr, "	-p <Path to vdev dir> (use with -e)\n");
120	(void) fprintf(stderr, "	-t <txg> highest txg to use when "
121	    "searching for uberblocks\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	abort();
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\n\n", (u_longlong_t)vd->vdev_id);
510
511		if (dump_opt['d'] <= 5) {
512			(void) printf("\t%10s   %10s   %5s\n",
513			    "offset", "spacemap", "free");
514			(void) printf("\t%10s   %10s   %5s\n",
515			    "------", "--------", "----");
516		}
517		for (m = 0; m < vd->vdev_ms_count; m++)
518			dump_metaslab(vd->vdev_ms[m]);
519		(void) printf("\n");
520	}
521}
522
523static void
524dump_dtl(vdev_t *vd, int indent)
525{
526	avl_tree_t *t = &vd->vdev_dtl_map.sm_root;
527	space_seg_t *ss;
528	vdev_t *pvd;
529	int c;
530
531	if (indent == 0)
532		(void) printf("\nDirty time logs:\n\n");
533
534	(void) printf("\t%*s%s\n", indent, "",
535	    vd->vdev_path ? vd->vdev_path :
536	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type :
537	    spa_name(vd->vdev_spa));
538
539	for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) {
540		/*
541		 * Everything in this DTL must appear in all parent DTL unions.
542		 */
543		for (pvd = vd; pvd; pvd = pvd->vdev_parent)
544			ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map,
545			    ss->ss_start, ss->ss_end - ss->ss_start));
546		(void) printf("\t%*soutage [%llu,%llu] length %llu\n",
547		    indent, "",
548		    (u_longlong_t)ss->ss_start,
549		    (u_longlong_t)ss->ss_end - 1,
550		    (u_longlong_t)(ss->ss_end - ss->ss_start));
551	}
552
553	(void) printf("\n");
554
555	if (dump_opt['d'] > 5 && vd->vdev_children == 0) {
556		dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl,
557		    &vd->vdev_dtl_map);
558		(void) printf("\n");
559	}
560
561	for (c = 0; c < vd->vdev_children; c++)
562		dump_dtl(vd->vdev_child[c], indent + 4);
563}
564
565/*ARGSUSED*/
566static void
567dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
568{
569}
570
571static uint64_t
572blkid2offset(const dnode_phys_t *dnp, int level, uint64_t blkid)
573{
574	if (level < 0)
575		return (blkid);
576
577	return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
578	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
579}
580
581static void
582sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas)
583{
584	dva_t *dva = bp->blk_dva;
585	int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1;
586	int i;
587
588	blkbuf[0] = '\0';
589
590	for (i = 0; i < ndvas; i++)
591		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
592		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
593		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
594		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
595
596	(void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu",
597	    (u_longlong_t)BP_GET_LSIZE(bp),
598	    (u_longlong_t)BP_GET_PSIZE(bp),
599	    (u_longlong_t)bp->blk_fill,
600	    (u_longlong_t)bp->blk_birth);
601}
602
603static void
604print_indirect(blkptr_t *bp, const zbookmark_t *zb,
605    const dnode_phys_t *dnp)
606{
607	char blkbuf[BP_SPRINTF_LEN];
608	int l;
609
610	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
611	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
612
613	(void) printf("%16llx ",
614	    (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid));
615
616	ASSERT(zb->zb_level >= 0);
617
618	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
619		if (l == zb->zb_level) {
620			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
621		} else {
622			(void) printf(" ");
623		}
624	}
625
626	sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
627	(void) printf("%s\n", blkbuf);
628}
629
630#define	SET_BOOKMARK(zb, objset, object, level, blkid)  \
631{                                                       \
632	(zb)->zb_objset = objset;                       \
633	(zb)->zb_object = object;                       \
634	(zb)->zb_level = level;                         \
635	(zb)->zb_blkid = blkid;                         \
636}
637
638static int
639visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
640    blkptr_t *bp, const zbookmark_t *zb)
641{
642	int err;
643
644	if (bp->blk_birth == 0)
645		return (0);
646
647	print_indirect(bp, zb, dnp);
648
649	if (BP_GET_LEVEL(bp) > 0) {
650		uint32_t flags = ARC_WAIT;
651		int i;
652		blkptr_t *cbp;
653		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
654		arc_buf_t *buf;
655		uint64_t fill = 0;
656
657		err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
658		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
659		if (err)
660			return (err);
661
662		/* recursively visit blocks below this */
663		cbp = buf->b_data;
664		for (i = 0; i < epb; i++, cbp++) {
665			zbookmark_t czb;
666
667			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
668			    zb->zb_level - 1,
669			    zb->zb_blkid * epb + i);
670			err = visit_indirect(spa, dnp, cbp, &czb);
671			if (err)
672				break;
673			fill += cbp->blk_fill;
674		}
675		ASSERT3U(fill, ==, bp->blk_fill);
676		(void) arc_buf_remove_ref(buf, &buf);
677	}
678
679	return (err);
680}
681
682/*ARGSUSED*/
683static void
684dump_indirect(dnode_t *dn)
685{
686	dnode_phys_t *dnp = dn->dn_phys;
687	int j;
688	zbookmark_t czb;
689
690	(void) printf("Indirect blocks:\n");
691
692	SET_BOOKMARK(&czb, dmu_objset_id(&dn->dn_objset->os),
693	    dn->dn_object, dnp->dn_nlevels - 1, 0);
694	for (j = 0; j < dnp->dn_nblkptr; j++) {
695		czb.zb_blkid = j;
696		(void) visit_indirect(dmu_objset_spa(&dn->dn_objset->os), dnp,
697		    &dnp->dn_blkptr[j], &czb);
698	}
699
700	(void) printf("\n");
701}
702
703/*ARGSUSED*/
704static void
705dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
706{
707	dsl_dir_phys_t *dd = data;
708	time_t crtime;
709	char nice[6];
710
711	if (dd == NULL)
712		return;
713
714	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
715
716	crtime = dd->dd_creation_time;
717	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
718	(void) printf("\t\thead_dataset_obj = %llu\n",
719	    (u_longlong_t)dd->dd_head_dataset_obj);
720	(void) printf("\t\tparent_dir_obj = %llu\n",
721	    (u_longlong_t)dd->dd_parent_obj);
722	(void) printf("\t\torigin_obj = %llu\n",
723	    (u_longlong_t)dd->dd_origin_obj);
724	(void) printf("\t\tchild_dir_zapobj = %llu\n",
725	    (u_longlong_t)dd->dd_child_dir_zapobj);
726	nicenum(dd->dd_used_bytes, nice);
727	(void) printf("\t\tused_bytes = %s\n", nice);
728	nicenum(dd->dd_compressed_bytes, nice);
729	(void) printf("\t\tcompressed_bytes = %s\n", nice);
730	nicenum(dd->dd_uncompressed_bytes, nice);
731	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
732	nicenum(dd->dd_quota, nice);
733	(void) printf("\t\tquota = %s\n", nice);
734	nicenum(dd->dd_reserved, nice);
735	(void) printf("\t\treserved = %s\n", nice);
736	(void) printf("\t\tprops_zapobj = %llu\n",
737	    (u_longlong_t)dd->dd_props_zapobj);
738	(void) printf("\t\tdeleg_zapobj = %llu\n",
739	    (u_longlong_t)dd->dd_deleg_zapobj);
740	(void) printf("\t\tflags = %llx\n",
741	    (u_longlong_t)dd->dd_flags);
742
743#define	DO(which) \
744	nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
745	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
746	DO(HEAD);
747	DO(SNAP);
748	DO(CHILD);
749	DO(CHILD_RSRV);
750	DO(REFRSRV);
751#undef DO
752}
753
754/*ARGSUSED*/
755static void
756dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
757{
758	dsl_dataset_phys_t *ds = data;
759	time_t crtime;
760	char used[6], compressed[6], uncompressed[6], unique[6];
761	char blkbuf[BP_SPRINTF_LEN];
762
763	if (ds == NULL)
764		return;
765
766	ASSERT(size == sizeof (*ds));
767	crtime = ds->ds_creation_time;
768	nicenum(ds->ds_used_bytes, used);
769	nicenum(ds->ds_compressed_bytes, compressed);
770	nicenum(ds->ds_uncompressed_bytes, uncompressed);
771	nicenum(ds->ds_unique_bytes, unique);
772	sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp);
773
774	(void) printf("\t\tdir_obj = %llu\n",
775	    (u_longlong_t)ds->ds_dir_obj);
776	(void) printf("\t\tprev_snap_obj = %llu\n",
777	    (u_longlong_t)ds->ds_prev_snap_obj);
778	(void) printf("\t\tprev_snap_txg = %llu\n",
779	    (u_longlong_t)ds->ds_prev_snap_txg);
780	(void) printf("\t\tnext_snap_obj = %llu\n",
781	    (u_longlong_t)ds->ds_next_snap_obj);
782	(void) printf("\t\tsnapnames_zapobj = %llu\n",
783	    (u_longlong_t)ds->ds_snapnames_zapobj);
784	(void) printf("\t\tnum_children = %llu\n",
785	    (u_longlong_t)ds->ds_num_children);
786	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
787	(void) printf("\t\tcreation_txg = %llu\n",
788	    (u_longlong_t)ds->ds_creation_txg);
789	(void) printf("\t\tdeadlist_obj = %llu\n",
790	    (u_longlong_t)ds->ds_deadlist_obj);
791	(void) printf("\t\tused_bytes = %s\n", used);
792	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
793	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
794	(void) printf("\t\tunique = %s\n", unique);
795	(void) printf("\t\tfsid_guid = %llu\n",
796	    (u_longlong_t)ds->ds_fsid_guid);
797	(void) printf("\t\tguid = %llu\n",
798	    (u_longlong_t)ds->ds_guid);
799	(void) printf("\t\tflags = %llx\n",
800	    (u_longlong_t)ds->ds_flags);
801	(void) printf("\t\tnext_clones_obj = %llu\n",
802	    (u_longlong_t)ds->ds_next_clones_obj);
803	(void) printf("\t\tprops_obj = %llu\n",
804	    (u_longlong_t)ds->ds_props_obj);
805	(void) printf("\t\tbp = %s\n", blkbuf);
806}
807
808static void
809dump_bplist(objset_t *mos, uint64_t object, char *name)
810{
811	bplist_t bpl = { 0 };
812	blkptr_t blk, *bp = &blk;
813	uint64_t itor = 0;
814	char bytes[6];
815	char comp[6];
816	char uncomp[6];
817
818	if (dump_opt['d'] < 3)
819		return;
820
821	mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL);
822	VERIFY(0 == bplist_open(&bpl, mos, object));
823	if (bplist_empty(&bpl)) {
824		bplist_close(&bpl);
825		mutex_destroy(&bpl.bpl_lock);
826		return;
827	}
828
829	nicenum(bpl.bpl_phys->bpl_bytes, bytes);
830	if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) {
831		nicenum(bpl.bpl_phys->bpl_comp, comp);
832		nicenum(bpl.bpl_phys->bpl_uncomp, uncomp);
833		(void) printf("\n    %s: %llu entries, %s (%s/%s comp)\n",
834		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries,
835		    bytes, comp, uncomp);
836	} else {
837		(void) printf("\n    %s: %llu entries, %s\n",
838		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes);
839	}
840
841	if (dump_opt['d'] < 5) {
842		bplist_close(&bpl);
843		mutex_destroy(&bpl.bpl_lock);
844		return;
845	}
846
847	(void) printf("\n");
848
849	while (bplist_iterate(&bpl, &itor, bp) == 0) {
850		char blkbuf[BP_SPRINTF_LEN];
851
852		ASSERT(bp->blk_birth != 0);
853		sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
854		(void) printf("\tItem %3llu: %s\n",
855		    (u_longlong_t)itor - 1, blkbuf);
856	}
857
858	bplist_close(&bpl);
859	mutex_destroy(&bpl.bpl_lock);
860}
861
862static avl_tree_t idx_tree;
863static avl_tree_t domain_tree;
864static boolean_t fuid_table_loaded;
865
866static void
867fuid_table_destroy()
868{
869	if (fuid_table_loaded) {
870		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
871		fuid_table_loaded = B_FALSE;
872	}
873}
874
875/*
876 * print uid or gid information.
877 * For normal POSIX id just the id is printed in decimal format.
878 * For CIFS files with FUID the fuid is printed in hex followed by
879 * the doman-rid string.
880 */
881static void
882print_idstr(uint64_t id, const char *id_type)
883{
884	if (FUID_INDEX(id)) {
885		char *domain;
886
887		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
888		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
889		    (u_longlong_t)id, domain, (int)FUID_RID(id));
890	} else {
891		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
892	}
893
894}
895
896static void
897dump_uidgid(objset_t *os, znode_phys_t *zp)
898{
899	uint32_t uid_idx, gid_idx;
900
901	uid_idx = FUID_INDEX(zp->zp_uid);
902	gid_idx = FUID_INDEX(zp->zp_gid);
903
904	/* Load domain table, if not already loaded */
905	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
906		uint64_t fuid_obj;
907
908		/* first find the fuid object.  It lives in the master node */
909		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
910		    8, 1, &fuid_obj) == 0);
911		(void) zfs_fuid_table_load(os, fuid_obj,
912		    &idx_tree, &domain_tree);
913		fuid_table_loaded = B_TRUE;
914	}
915
916	print_idstr(zp->zp_uid, "uid");
917	print_idstr(zp->zp_gid, "gid");
918}
919
920/*ARGSUSED*/
921static void
922dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
923{
924	znode_phys_t *zp = data;
925	time_t z_crtime, z_atime, z_mtime, z_ctime;
926	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
927	int error;
928
929	ASSERT(size >= sizeof (znode_phys_t));
930
931	error = zfs_obj_to_path(os, object, path, sizeof (path));
932	if (error != 0) {
933		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
934		    (u_longlong_t)object);
935	}
936
937	if (dump_opt['d'] < 3) {
938		(void) printf("\t%s\n", path);
939		return;
940	}
941
942	z_crtime = (time_t)zp->zp_crtime[0];
943	z_atime = (time_t)zp->zp_atime[0];
944	z_mtime = (time_t)zp->zp_mtime[0];
945	z_ctime = (time_t)zp->zp_ctime[0];
946
947	(void) printf("\tpath	%s\n", path);
948	dump_uidgid(os, zp);
949	(void) printf("\tatime	%s", ctime(&z_atime));
950	(void) printf("\tmtime	%s", ctime(&z_mtime));
951	(void) printf("\tctime	%s", ctime(&z_ctime));
952	(void) printf("\tcrtime	%s", ctime(&z_crtime));
953	(void) printf("\tgen	%llu\n", (u_longlong_t)zp->zp_gen);
954	(void) printf("\tmode	%llo\n", (u_longlong_t)zp->zp_mode);
955	(void) printf("\tsize	%llu\n", (u_longlong_t)zp->zp_size);
956	(void) printf("\tparent	%llu\n", (u_longlong_t)zp->zp_parent);
957	(void) printf("\tlinks	%llu\n", (u_longlong_t)zp->zp_links);
958	(void) printf("\txattr	%llu\n", (u_longlong_t)zp->zp_xattr);
959	(void) printf("\trdev	0x%016llx\n", (u_longlong_t)zp->zp_rdev);
960}
961
962/*ARGSUSED*/
963static void
964dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
965{
966}
967
968/*ARGSUSED*/
969static void
970dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
971{
972}
973
974static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
975	dump_none,		/* unallocated			*/
976	dump_zap,		/* object directory		*/
977	dump_uint64,		/* object array			*/
978	dump_none,		/* packed nvlist		*/
979	dump_packed_nvlist,	/* packed nvlist size		*/
980	dump_none,		/* bplist			*/
981	dump_none,		/* bplist header		*/
982	dump_none,		/* SPA space map header		*/
983	dump_none,		/* SPA space map		*/
984	dump_none,		/* ZIL intent log		*/
985	dump_dnode,		/* DMU dnode			*/
986	dump_dmu_objset,	/* DMU objset			*/
987	dump_dsl_dir,		/* DSL directory		*/
988	dump_zap,		/* DSL directory child map	*/
989	dump_zap,		/* DSL dataset snap map		*/
990	dump_zap,		/* DSL props			*/
991	dump_dsl_dataset,	/* DSL dataset			*/
992	dump_znode,		/* ZFS znode			*/
993	dump_acl,		/* ZFS V0 ACL			*/
994	dump_uint8,		/* ZFS plain file		*/
995	dump_zpldir,		/* ZFS directory		*/
996	dump_zap,		/* ZFS master node		*/
997	dump_zap,		/* ZFS delete queue		*/
998	dump_uint8,		/* zvol object			*/
999	dump_zap,		/* zvol prop			*/
1000	dump_uint8,		/* other uint8[]		*/
1001	dump_uint64,		/* other uint64[]		*/
1002	dump_zap,		/* other ZAP			*/
1003	dump_zap,		/* persistent error log		*/
1004	dump_uint8,		/* SPA history			*/
1005	dump_uint64,		/* SPA history offsets		*/
1006	dump_zap,		/* Pool properties		*/
1007	dump_zap,		/* DSL permissions		*/
1008	dump_acl,		/* ZFS ACL			*/
1009	dump_uint8,		/* ZFS SYSACL			*/
1010	dump_none,		/* FUID nvlist			*/
1011	dump_packed_nvlist,	/* FUID nvlist size		*/
1012	dump_zap,		/* DSL dataset next clones	*/
1013	dump_zap,		/* DSL scrub queue		*/
1014};
1015
1016static void
1017dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1018{
1019	dmu_buf_t *db = NULL;
1020	dmu_object_info_t doi;
1021	dnode_t *dn;
1022	void *bonus = NULL;
1023	size_t bsize = 0;
1024	char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1025	char aux[50];
1026	int error;
1027
1028	if (*print_header) {
1029		(void) printf("\n    Object  lvl   iblk   dblk  lsize"
1030		    "  asize  type\n");
1031		*print_header = 0;
1032	}
1033
1034	if (object == 0) {
1035		dn = os->os->os_meta_dnode;
1036	} else {
1037		error = dmu_bonus_hold(os, object, FTAG, &db);
1038		if (error)
1039			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1040			    object, error);
1041		bonus = db->db_data;
1042		bsize = db->db_size;
1043		dn = ((dmu_buf_impl_t *)db)->db_dnode;
1044	}
1045	dmu_object_info_from_dnode(dn, &doi);
1046
1047	nicenum(doi.doi_metadata_block_size, iblk);
1048	nicenum(doi.doi_data_block_size, dblk);
1049	nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1050	    lsize);
1051	nicenum(doi.doi_physical_blks << 9, asize);
1052	nicenum(doi.doi_bonus_size, bonus_size);
1053
1054	aux[0] = '\0';
1055
1056	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1057		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1058		    zio_checksum_table[doi.doi_checksum].ci_name);
1059	}
1060
1061	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1062		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1063		    zio_compress_table[doi.doi_compress].ci_name);
1064	}
1065
1066	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1067	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1068	    asize, dmu_ot[doi.doi_type].ot_name, aux);
1069
1070	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1071		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1072		    "", "", "", "", bonus_size, "bonus",
1073		    dmu_ot[doi.doi_bonus_type].ot_name);
1074	}
1075
1076	if (verbosity >= 4) {
1077		object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1078		object_viewer[doi.doi_type](os, object, NULL, 0);
1079		*print_header = 1;
1080	}
1081
1082	if (verbosity >= 5)
1083		dump_indirect(dn);
1084
1085	if (verbosity >= 5) {
1086		/*
1087		 * Report the list of segments that comprise the object.
1088		 */
1089		uint64_t start = 0;
1090		uint64_t end;
1091		uint64_t blkfill = 1;
1092		int minlvl = 1;
1093
1094		if (dn->dn_type == DMU_OT_DNODE) {
1095			minlvl = 0;
1096			blkfill = DNODES_PER_BLOCK;
1097		}
1098
1099		for (;;) {
1100			error = dnode_next_offset(dn,
1101			    0, &start, minlvl, blkfill, 0);
1102			if (error)
1103				break;
1104			end = start;
1105			error = dnode_next_offset(dn,
1106			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1107			nicenum(end - start, segsize);
1108			(void) printf("\t\tsegment [%016llx, %016llx)"
1109			    " size %5s\n", (u_longlong_t)start,
1110			    (u_longlong_t)end, segsize);
1111			if (error)
1112				break;
1113			start = end;
1114		}
1115	}
1116
1117	if (db != NULL)
1118		dmu_buf_rele(db, FTAG);
1119}
1120
1121static char *objset_types[DMU_OST_NUMTYPES] = {
1122	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1123
1124static void
1125dump_dir(objset_t *os)
1126{
1127	dmu_objset_stats_t dds;
1128	uint64_t object, object_count;
1129	uint64_t refdbytes, usedobjs, scratch;
1130	char numbuf[8];
1131	char blkbuf[BP_SPRINTF_LEN];
1132	char osname[MAXNAMELEN];
1133	char *type = "UNKNOWN";
1134	int verbosity = dump_opt['d'];
1135	int print_header = 1;
1136	int i, error;
1137
1138	dmu_objset_fast_stat(os, &dds);
1139
1140	if (dds.dds_type < DMU_OST_NUMTYPES)
1141		type = objset_types[dds.dds_type];
1142
1143	if (dds.dds_type == DMU_OST_META) {
1144		dds.dds_creation_txg = TXG_INITIAL;
1145		usedobjs = os->os->os_rootbp->blk_fill;
1146		refdbytes = os->os->os_spa->spa_dsl_pool->
1147		    dp_mos_dir->dd_phys->dd_used_bytes;
1148	} else {
1149		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1150	}
1151
1152	ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1153
1154	nicenum(refdbytes, numbuf);
1155
1156	if (verbosity >= 4) {
1157		(void) strcpy(blkbuf, ", rootbp ");
1158		sprintf_blkptr(blkbuf + strlen(blkbuf),
1159		    BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1160	} else {
1161		blkbuf[0] = '\0';
1162	}
1163
1164	dmu_objset_name(os, osname);
1165
1166	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1167	    "%s, %llu objects%s\n",
1168	    osname, type, (u_longlong_t)dmu_objset_id(os),
1169	    (u_longlong_t)dds.dds_creation_txg,
1170	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1171
1172	dump_intent_log(dmu_objset_zil(os));
1173
1174	if (dmu_objset_ds(os) != NULL)
1175		dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1176		    dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1177
1178	if (verbosity < 2)
1179		return;
1180
1181	if (os->os->os_rootbp->blk_birth == 0)
1182		return;
1183
1184	if (zopt_objects != 0) {
1185		for (i = 0; i < zopt_objects; i++)
1186			dump_object(os, zopt_object[i], verbosity,
1187			    &print_header);
1188		(void) printf("\n");
1189		return;
1190	}
1191
1192	dump_object(os, 0, verbosity, &print_header);
1193	object_count = 1;
1194
1195	object = 0;
1196	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1197		dump_object(os, object, verbosity, &print_header);
1198		object_count++;
1199	}
1200
1201	ASSERT3U(object_count, ==, usedobjs);
1202
1203	(void) printf("\n");
1204
1205	if (error != ESRCH)
1206		fatal("dmu_object_next() = %d", error);
1207}
1208
1209static void
1210dump_uberblock(uberblock_t *ub)
1211{
1212	time_t timestamp = ub->ub_timestamp;
1213
1214	(void) printf("Uberblock\n\n");
1215	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1216	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1217	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1218	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1219	(void) printf("\ttimestamp = %llu UTC = %s",
1220	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1221	if (dump_opt['u'] >= 3) {
1222		char blkbuf[BP_SPRINTF_LEN];
1223		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1224		(void) printf("\trootbp = %s\n", blkbuf);
1225	}
1226	(void) printf("\n");
1227}
1228
1229static void
1230dump_config(const char *pool)
1231{
1232	spa_t *spa = NULL;
1233
1234	mutex_enter(&spa_namespace_lock);
1235	while ((spa = spa_next(spa)) != NULL) {
1236		if (pool == NULL)
1237			(void) printf("%s\n", spa_name(spa));
1238		if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1239			dump_nvlist(spa->spa_config, 4);
1240	}
1241	mutex_exit(&spa_namespace_lock);
1242}
1243
1244static void
1245dump_cachefile(const char *cachefile)
1246{
1247	int fd;
1248	struct stat64 statbuf;
1249	char *buf;
1250	nvlist_t *config;
1251
1252	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1253		(void) printf("cannot open '%s': %s\n", cachefile,
1254		    strerror(errno));
1255		exit(1);
1256	}
1257
1258	if (fstat64(fd, &statbuf) != 0) {
1259		(void) printf("failed to stat '%s': %s\n", cachefile,
1260		    strerror(errno));
1261		exit(1);
1262	}
1263
1264	if ((buf = malloc(statbuf.st_size)) == NULL) {
1265		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1266		    (u_longlong_t)statbuf.st_size);
1267		exit(1);
1268	}
1269
1270	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1271		(void) fprintf(stderr, "failed to read %llu bytes\n",
1272		    (u_longlong_t)statbuf.st_size);
1273		exit(1);
1274	}
1275
1276	(void) close(fd);
1277
1278	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1279		(void) fprintf(stderr, "failed to unpack nvlist\n");
1280		exit(1);
1281	}
1282
1283	free(buf);
1284
1285	dump_nvlist(config, 0);
1286
1287	nvlist_free(config);
1288}
1289
1290static void
1291dump_label(const char *dev)
1292{
1293	int fd;
1294	vdev_label_t label;
1295	char *buf = label.vl_vdev_phys.vp_nvlist;
1296	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1297	struct stat64 statbuf;
1298	uint64_t psize;
1299	int l;
1300
1301	if ((fd = open64(dev, O_RDONLY)) < 0) {
1302		(void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1303		exit(1);
1304	}
1305
1306	if (fstat64(fd, &statbuf) != 0) {
1307		(void) printf("failed to stat '%s': %s\n", dev,
1308		    strerror(errno));
1309		exit(1);
1310	}
1311
1312	psize = statbuf.st_size;
1313	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1314
1315	for (l = 0; l < VDEV_LABELS; l++) {
1316
1317		nvlist_t *config = NULL;
1318
1319		(void) printf("--------------------------------------------\n");
1320		(void) printf("LABEL %d\n", l);
1321		(void) printf("--------------------------------------------\n");
1322
1323		if (pread64(fd, &label, sizeof (label),
1324		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1325			(void) printf("failed to read label %d\n", l);
1326			continue;
1327		}
1328
1329		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1330			(void) printf("failed to unpack label %d\n", l);
1331			continue;
1332		}
1333		dump_nvlist(config, 4);
1334		nvlist_free(config);
1335	}
1336}
1337
1338/*ARGSUSED*/
1339static int
1340dump_one_dir(char *dsname, void *arg)
1341{
1342	int error;
1343	objset_t *os;
1344
1345	error = dmu_objset_open(dsname, DMU_OST_ANY,
1346	    DS_MODE_USER | DS_MODE_READONLY, &os);
1347	if (error) {
1348		(void) printf("Could not open %s\n", dsname);
1349		return (0);
1350	}
1351	dump_dir(os);
1352	dmu_objset_close(os);
1353	fuid_table_destroy();
1354	return (0);
1355}
1356
1357static void
1358zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1359{
1360	vdev_t *vd = sm->sm_ppd;
1361
1362	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1363	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
1364}
1365
1366/* ARGSUSED */
1367static void
1368zdb_space_map_load(space_map_t *sm)
1369{
1370}
1371
1372static void
1373zdb_space_map_unload(space_map_t *sm)
1374{
1375	space_map_vacate(sm, zdb_leak, sm);
1376}
1377
1378/* ARGSUSED */
1379static void
1380zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
1381{
1382}
1383
1384static space_map_ops_t zdb_space_map_ops = {
1385	zdb_space_map_load,
1386	zdb_space_map_unload,
1387	NULL,	/* alloc */
1388	zdb_space_map_claim,
1389	NULL	/* free */
1390};
1391
1392static void
1393zdb_leak_init(spa_t *spa)
1394{
1395	vdev_t *rvd = spa->spa_root_vdev;
1396
1397	for (int c = 0; c < rvd->vdev_children; c++) {
1398		vdev_t *vd = rvd->vdev_child[c];
1399		for (int m = 0; m < vd->vdev_ms_count; m++) {
1400			metaslab_t *msp = vd->vdev_ms[m];
1401			mutex_enter(&msp->ms_lock);
1402			VERIFY(space_map_load(&msp->ms_map, &zdb_space_map_ops,
1403			    SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset) == 0);
1404			msp->ms_map.sm_ppd = vd;
1405			mutex_exit(&msp->ms_lock);
1406		}
1407	}
1408}
1409
1410static void
1411zdb_leak_fini(spa_t *spa)
1412{
1413	vdev_t *rvd = spa->spa_root_vdev;
1414
1415	for (int c = 0; c < rvd->vdev_children; c++) {
1416		vdev_t *vd = rvd->vdev_child[c];
1417		for (int m = 0; m < vd->vdev_ms_count; m++) {
1418			metaslab_t *msp = vd->vdev_ms[m];
1419			mutex_enter(&msp->ms_lock);
1420			space_map_unload(&msp->ms_map);
1421			mutex_exit(&msp->ms_lock);
1422		}
1423	}
1424}
1425
1426/*
1427 * Verify that the sum of the sizes of all blocks in the pool adds up
1428 * to the SPA's sa_alloc total.
1429 */
1430typedef struct zdb_blkstats {
1431	uint64_t	zb_asize;
1432	uint64_t	zb_lsize;
1433	uint64_t	zb_psize;
1434	uint64_t	zb_count;
1435} zdb_blkstats_t;
1436
1437#define	DMU_OT_DEFERRED	DMU_OT_NONE
1438#define	DMU_OT_TOTAL	DMU_OT_NUMTYPES
1439
1440#define	ZB_TOTAL	DN_MAX_LEVELS
1441
1442typedef struct zdb_cb {
1443	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1444	uint64_t	zcb_errors[256];
1445	int		zcb_readfails;
1446	int		zcb_haderrors;
1447} zdb_cb_t;
1448
1449static void
1450zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, dmu_object_type_t type)
1451{
1452	for (int i = 0; i < 4; i++) {
1453		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1454		int t = (i & 1) ? type : DMU_OT_TOTAL;
1455		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1456
1457		zb->zb_asize += BP_GET_ASIZE(bp);
1458		zb->zb_lsize += BP_GET_LSIZE(bp);
1459		zb->zb_psize += BP_GET_PSIZE(bp);
1460		zb->zb_count++;
1461	}
1462
1463	if (dump_opt['S']) {
1464		boolean_t print_sig;
1465
1466		print_sig = !zdb_sig_user_data || (BP_GET_LEVEL(bp) == 0 &&
1467		    BP_GET_TYPE(bp) == DMU_OT_PLAIN_FILE_CONTENTS);
1468
1469		if (BP_GET_CHECKSUM(bp) < zdb_sig_cksumalg)
1470			print_sig = B_FALSE;
1471
1472		if (print_sig) {
1473			(void) printf("%llu\t%lld\t%lld\t%s\t%s\t%s\t"
1474			    "%llx:%llx:%llx:%llx\n",
1475			    (u_longlong_t)BP_GET_LEVEL(bp),
1476			    (longlong_t)BP_GET_PSIZE(bp),
1477			    (longlong_t)BP_GET_NDVAS(bp),
1478			    dmu_ot[BP_GET_TYPE(bp)].ot_name,
1479			    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1480			    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name,
1481			    (u_longlong_t)bp->blk_cksum.zc_word[0],
1482			    (u_longlong_t)bp->blk_cksum.zc_word[1],
1483			    (u_longlong_t)bp->blk_cksum.zc_word[2],
1484			    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1485		}
1486	}
1487
1488	if (!dump_opt['L'])
1489		VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
1490		    NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
1491}
1492
1493static int
1494zdb_blkptr_cb(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
1495    const dnode_phys_t *dnp, void *arg)
1496{
1497	zdb_cb_t *zcb = arg;
1498	char blkbuf[BP_SPRINTF_LEN];
1499
1500	if (bp == NULL)
1501		return (0);
1502
1503	zdb_count_block(spa, zcb, bp, BP_GET_TYPE(bp));
1504
1505	if (dump_opt['c'] || dump_opt['S']) {
1506		int ioerr, size;
1507		void *data;
1508
1509		size = BP_GET_LSIZE(bp);
1510		data = malloc(size);
1511		ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1512		    NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
1513		    ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB, zb));
1514		free(data);
1515
1516		/* We expect io errors on intent log */
1517		if (ioerr && BP_GET_TYPE(bp) != DMU_OT_INTENT_LOG) {
1518			zcb->zcb_haderrors = 1;
1519			zcb->zcb_errors[ioerr]++;
1520
1521			if (dump_opt['b'] >= 2)
1522				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1523			else
1524				blkbuf[0] = '\0';
1525
1526			if (!dump_opt['S']) {
1527				(void) printf("zdb_blkptr_cb: "
1528				    "Got error %d reading "
1529				    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
1530				    ioerr,
1531				    (u_longlong_t)zb->zb_objset,
1532				    (u_longlong_t)zb->zb_object,
1533				    (u_longlong_t)zb->zb_level,
1534				    (u_longlong_t)zb->zb_blkid,
1535				    blkbuf);
1536			}
1537		}
1538	}
1539
1540	zcb->zcb_readfails = 0;
1541
1542	if (dump_opt['b'] >= 4) {
1543		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1544		(void) printf("objset %llu object %llu offset 0x%llx %s\n",
1545		    (u_longlong_t)zb->zb_objset,
1546		    (u_longlong_t)zb->zb_object,
1547		    (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid),
1548		    blkbuf);
1549	}
1550
1551	return (0);
1552}
1553
1554static int
1555dump_block_stats(spa_t *spa)
1556{
1557	zdb_cb_t zcb = { 0 };
1558	zdb_blkstats_t *zb, *tzb;
1559	uint64_t alloc, space, logalloc;
1560	vdev_t *rvd = spa->spa_root_vdev;
1561	int leaks = 0;
1562	int c, e;
1563
1564	if (!dump_opt['S']) {
1565		(void) printf("\nTraversing all blocks %s%s%s%s...\n",
1566		    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
1567		    dump_opt['c'] ? "checksums " : "",
1568		    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
1569		    !dump_opt['L'] ? "nothing leaked " : "");
1570	}
1571
1572	/*
1573	 * Load all space maps as SM_ALLOC maps, then traverse the pool
1574	 * claiming each block we discover.  If the pool is perfectly
1575	 * consistent, the space maps will be empty when we're done.
1576	 * Anything left over is a leak; any block we can't claim (because
1577	 * it's not part of any space map) is a double allocation,
1578	 * reference to a freed block, or an unclaimed log block.
1579	 */
1580	if (!dump_opt['L'])
1581		zdb_leak_init(spa);
1582
1583	/*
1584	 * If there's a deferred-free bplist, process that first.
1585	 */
1586	if (spa->spa_sync_bplist_obj != 0) {
1587		bplist_t *bpl = &spa->spa_sync_bplist;
1588		blkptr_t blk;
1589		uint64_t itor = 0;
1590
1591		VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1592		    spa->spa_sync_bplist_obj));
1593
1594		while (bplist_iterate(bpl, &itor, &blk) == 0) {
1595			if (dump_opt['b'] >= 4) {
1596				char blkbuf[BP_SPRINTF_LEN];
1597				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1598				(void) printf("[%s] %s\n",
1599				    "deferred free", blkbuf);
1600			}
1601			zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1602		}
1603
1604		bplist_close(bpl);
1605	}
1606
1607	zcb.zcb_haderrors |= traverse_pool(spa, zdb_blkptr_cb, &zcb);
1608
1609	if (zcb.zcb_haderrors && !dump_opt['S']) {
1610		(void) printf("\nError counts:\n\n");
1611		(void) printf("\t%5s  %s\n", "errno", "count");
1612		for (e = 0; e < 256; e++) {
1613			if (zcb.zcb_errors[e] != 0) {
1614				(void) printf("\t%5d  %llu\n",
1615				    e, (u_longlong_t)zcb.zcb_errors[e]);
1616			}
1617		}
1618	}
1619
1620	/*
1621	 * Report any leaked segments.
1622	 */
1623	if (!dump_opt['L'])
1624		zdb_leak_fini(spa);
1625
1626	/*
1627	 * If we're interested in printing out the blkptr signatures,
1628	 * return now as we don't print out anything else (including
1629	 * errors and leaks).
1630	 */
1631	if (dump_opt['S'])
1632		return (zcb.zcb_haderrors ? 3 : 0);
1633
1634	alloc = spa_get_alloc(spa);
1635	space = spa_get_space(spa);
1636
1637	/*
1638	 * Log blocks allocated from a separate log device don't count
1639	 * as part of the normal pool space; factor them in here.
1640	 */
1641	logalloc = 0;
1642
1643	for (c = 0; c < rvd->vdev_children; c++)
1644		if (rvd->vdev_child[c]->vdev_islog)
1645			logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc;
1646
1647	tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
1648
1649	if (tzb->zb_asize == alloc + logalloc) {
1650		if (!dump_opt['L'])
1651			(void) printf("\n\tNo leaks (block sum matches space"
1652			    " maps exactly)\n");
1653	} else {
1654		(void) printf("block traversal size %llu != alloc %llu "
1655		    "(%s %lld)\n",
1656		    (u_longlong_t)tzb->zb_asize,
1657		    (u_longlong_t)alloc + logalloc,
1658		    (dump_opt['L']) ? "unreachable" : "leaked",
1659		    (longlong_t)(alloc + logalloc - tzb->zb_asize));
1660		leaks = 1;
1661	}
1662
1663	if (tzb->zb_count == 0)
1664		return (2);
1665
1666	(void) printf("\n");
1667	(void) printf("\tbp count:      %10llu\n",
1668	    (u_longlong_t)tzb->zb_count);
1669	(void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1670	    (u_longlong_t)tzb->zb_lsize,
1671	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1672	(void) printf("\tbp physical:   %10llu\t avg:"
1673	    " %6llu\tcompression: %6.2f\n",
1674	    (u_longlong_t)tzb->zb_psize,
1675	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1676	    (double)tzb->zb_lsize / tzb->zb_psize);
1677	(void) printf("\tbp allocated:  %10llu\t avg:"
1678	    " %6llu\tcompression: %6.2f\n",
1679	    (u_longlong_t)tzb->zb_asize,
1680	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1681	    (double)tzb->zb_lsize / tzb->zb_asize);
1682	(void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1683	    (u_longlong_t)alloc, 100.0 * alloc / space);
1684
1685	if (dump_opt['b'] >= 2) {
1686		int l, t, level;
1687		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1688		    "\t  avg\t comp\t%%Total\tType\n");
1689
1690		for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1691			char csize[6], lsize[6], psize[6], asize[6], avg[6];
1692			char *typename;
1693
1694			typename = t == DMU_OT_DEFERRED ? "deferred free" :
1695			    t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1696
1697			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1698				(void) printf("%6s\t%5s\t%5s\t%5s"
1699				    "\t%5s\t%5s\t%6s\t%s\n",
1700				    "-",
1701				    "-",
1702				    "-",
1703				    "-",
1704				    "-",
1705				    "-",
1706				    "-",
1707				    typename);
1708				continue;
1709			}
1710
1711			for (l = ZB_TOTAL - 1; l >= -1; l--) {
1712				level = (l == -1 ? ZB_TOTAL : l);
1713				zb = &zcb.zcb_type[level][t];
1714
1715				if (zb->zb_asize == 0)
1716					continue;
1717
1718				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1719					continue;
1720
1721				if (level == 0 && zb->zb_asize ==
1722				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1723					continue;
1724
1725				nicenum(zb->zb_count, csize);
1726				nicenum(zb->zb_lsize, lsize);
1727				nicenum(zb->zb_psize, psize);
1728				nicenum(zb->zb_asize, asize);
1729				nicenum(zb->zb_asize / zb->zb_count, avg);
1730
1731				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1732				    "\t%5.2f\t%6.2f\t",
1733				    csize, lsize, psize, asize, avg,
1734				    (double)zb->zb_lsize / zb->zb_psize,
1735				    100.0 * zb->zb_asize / tzb->zb_asize);
1736
1737				if (level == ZB_TOTAL)
1738					(void) printf("%s\n", typename);
1739				else
1740					(void) printf("    L%d %s\n",
1741					    level, typename);
1742			}
1743		}
1744	}
1745
1746	(void) printf("\n");
1747
1748	if (leaks)
1749		return (2);
1750
1751	if (zcb.zcb_haderrors)
1752		return (3);
1753
1754	return (0);
1755}
1756
1757static void
1758dump_zpool(spa_t *spa)
1759{
1760	dsl_pool_t *dp = spa_get_dsl(spa);
1761	int rc = 0;
1762
1763	if (dump_opt['u'])
1764		dump_uberblock(&spa->spa_uberblock);
1765
1766	if (dump_opt['d'] || dump_opt['i']) {
1767		dump_dir(dp->dp_meta_objset);
1768		if (dump_opt['d'] >= 3) {
1769			dump_bplist(dp->dp_meta_objset,
1770			    spa->spa_sync_bplist_obj, "Deferred frees");
1771			dump_dtl(spa->spa_root_vdev, 0);
1772			dump_metaslabs(spa);
1773		}
1774		(void) dmu_objset_find(spa_name(spa), dump_one_dir, NULL,
1775		    DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1776	}
1777
1778	if (dump_opt['b'] || dump_opt['c'] || dump_opt['S'])
1779		rc = dump_block_stats(spa);
1780
1781	if (dump_opt['s'])
1782		show_pool_stats(spa);
1783
1784	if (rc != 0)
1785		exit(rc);
1786}
1787
1788#define	ZDB_FLAG_CHECKSUM	0x0001
1789#define	ZDB_FLAG_DECOMPRESS	0x0002
1790#define	ZDB_FLAG_BSWAP		0x0004
1791#define	ZDB_FLAG_GBH		0x0008
1792#define	ZDB_FLAG_INDIRECT	0x0010
1793#define	ZDB_FLAG_PHYS		0x0020
1794#define	ZDB_FLAG_RAW		0x0040
1795#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
1796
1797int flagbits[256];
1798
1799static void
1800zdb_print_blkptr(blkptr_t *bp, int flags)
1801{
1802	dva_t *dva = bp->blk_dva;
1803	int d;
1804
1805	if (flags & ZDB_FLAG_BSWAP)
1806		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1807	/*
1808	 * Super-ick warning:  This code is also duplicated in
1809	 * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1810	 * replication, too.
1811	 */
1812	for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1813		(void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1814		    (longlong_t)DVA_GET_VDEV(&dva[d]),
1815		    (longlong_t)DVA_GET_OFFSET(&dva[d]));
1816		(void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1817		    "ASIZE: %llx\n", d,
1818		    DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1819		    (longlong_t)DVA_GET_GRID(&dva[d]),
1820		    (longlong_t)DVA_GET_ASIZE(&dva[d]));
1821		(void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1822		    (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1823		    (longlong_t)DVA_GET_OFFSET(&dva[d]),
1824		    (longlong_t)BP_GET_PSIZE(bp),
1825		    BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1826		    !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1827		    "d" : "",
1828		    DVA_GET_GANG(&dva[d]) ? "g" : "",
1829		    BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1830	}
1831	(void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1832	    (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1833	(void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1834	    BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1835	    dmu_ot[BP_GET_TYPE(bp)].ot_name);
1836	(void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1837	    (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1838	    (u_longlong_t)bp->blk_fill);
1839	(void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1840	    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1841	    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1842	(void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1843	    (u_longlong_t)bp->blk_cksum.zc_word[0],
1844	    (u_longlong_t)bp->blk_cksum.zc_word[1],
1845	    (u_longlong_t)bp->blk_cksum.zc_word[2],
1846	    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1847}
1848
1849static void
1850zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1851{
1852	int i;
1853
1854	for (i = 0; i < nbps; i++)
1855		zdb_print_blkptr(&bp[i], flags);
1856}
1857
1858static void
1859zdb_dump_gbh(void *buf, int flags)
1860{
1861	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1862}
1863
1864static void
1865zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1866{
1867	if (flags & ZDB_FLAG_BSWAP)
1868		byteswap_uint64_array(buf, size);
1869	(void) write(2, buf, size);
1870}
1871
1872static void
1873zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1874{
1875	uint64_t *d = (uint64_t *)buf;
1876	int nwords = size / sizeof (uint64_t);
1877	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1878	int i, j;
1879	char *hdr, *c;
1880
1881
1882	if (do_bswap)
1883		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1884	else
1885		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1886
1887	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1888
1889	for (i = 0; i < nwords; i += 2) {
1890		(void) printf("%06llx:  %016llx  %016llx  ",
1891		    (u_longlong_t)(i * sizeof (uint64_t)),
1892		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1893		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1894
1895		c = (char *)&d[i];
1896		for (j = 0; j < 2 * sizeof (uint64_t); j++)
1897			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
1898		(void) printf("\n");
1899	}
1900}
1901
1902/*
1903 * There are two acceptable formats:
1904 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
1905 *	child[.child]*    - For example: 0.1.1
1906 *
1907 * The second form can be used to specify arbitrary vdevs anywhere
1908 * in the heirarchy.  For example, in a pool with a mirror of
1909 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1910 */
1911static vdev_t *
1912zdb_vdev_lookup(vdev_t *vdev, char *path)
1913{
1914	char *s, *p, *q;
1915	int i;
1916
1917	if (vdev == NULL)
1918		return (NULL);
1919
1920	/* First, assume the x.x.x.x format */
1921	i = (int)strtoul(path, &s, 10);
1922	if (s == path || (s && *s != '.' && *s != '\0'))
1923		goto name;
1924	if (i < 0 || i >= vdev->vdev_children)
1925		return (NULL);
1926
1927	vdev = vdev->vdev_child[i];
1928	if (*s == '\0')
1929		return (vdev);
1930	return (zdb_vdev_lookup(vdev, s+1));
1931
1932name:
1933	for (i = 0; i < vdev->vdev_children; i++) {
1934		vdev_t *vc = vdev->vdev_child[i];
1935
1936		if (vc->vdev_path == NULL) {
1937			vc = zdb_vdev_lookup(vc, path);
1938			if (vc == NULL)
1939				continue;
1940			else
1941				return (vc);
1942		}
1943
1944		p = strrchr(vc->vdev_path, '/');
1945		p = p ? p + 1 : vc->vdev_path;
1946		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
1947
1948		if (strcmp(vc->vdev_path, path) == 0)
1949			return (vc);
1950		if (strcmp(p, path) == 0)
1951			return (vc);
1952		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
1953			return (vc);
1954	}
1955
1956	return (NULL);
1957}
1958
1959/*
1960 * Read a block from a pool and print it out.  The syntax of the
1961 * block descriptor is:
1962 *
1963 *	pool:vdev_specifier:offset:size[:flags]
1964 *
1965 *	pool           - The name of the pool you wish to read from
1966 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
1967 *	offset         - offset, in hex, in bytes
1968 *	size           - Amount of data to read, in hex, in bytes
1969 *	flags          - A string of characters specifying options
1970 *		 b: Decode a blkptr at given offset within block
1971 *		*c: Calculate and display checksums
1972 *		*d: Decompress data before dumping
1973 *		 e: Byteswap data before dumping
1974 *		*g: Display data as a gang block header
1975 *		*i: Display as an indirect block
1976 *		 p: Do I/O to physical offset
1977 *		 r: Dump raw data to stdout
1978 *
1979 *              * = not yet implemented
1980 */
1981static void
1982zdb_read_block(char *thing, spa_t **spap)
1983{
1984	spa_t *spa = *spap;
1985	int flags = 0;
1986	uint64_t offset = 0, size = 0, blkptr_offset = 0;
1987	zio_t *zio;
1988	vdev_t *vd;
1989	void *buf;
1990	char *s, *p, *dup, *pool, *vdev, *flagstr;
1991	int i, error, zio_flags;
1992
1993	dup = strdup(thing);
1994	s = strtok(dup, ":");
1995	pool = s ? s : "";
1996	s = strtok(NULL, ":");
1997	vdev = s ? s : "";
1998	s = strtok(NULL, ":");
1999	offset = strtoull(s ? s : "", NULL, 16);
2000	s = strtok(NULL, ":");
2001	size = strtoull(s ? s : "", NULL, 16);
2002	s = strtok(NULL, ":");
2003	flagstr = s ? s : "";
2004
2005	s = NULL;
2006	if (size == 0)
2007		s = "size must not be zero";
2008	if (!IS_P2ALIGNED(size, DEV_BSIZE))
2009		s = "size must be a multiple of sector size";
2010	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2011		s = "offset must be a multiple of sector size";
2012	if (s) {
2013		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2014		free(dup);
2015		return;
2016	}
2017
2018	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2019		for (i = 0; flagstr[i]; i++) {
2020			int bit = flagbits[(uchar_t)flagstr[i]];
2021
2022			if (bit == 0) {
2023				(void) printf("***Invalid flag: %c\n",
2024				    flagstr[i]);
2025				continue;
2026			}
2027			flags |= bit;
2028
2029			/* If it's not something with an argument, keep going */
2030			if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2031			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
2032				continue;
2033
2034			p = &flagstr[i + 1];
2035			if (bit == ZDB_FLAG_PRINT_BLKPTR)
2036				blkptr_offset = strtoull(p, &p, 16);
2037			if (*p != ':' && *p != '\0') {
2038				(void) printf("***Invalid flag arg: '%s'\n", s);
2039				free(dup);
2040				return;
2041			}
2042		}
2043	}
2044
2045	if (spa == NULL || strcmp(spa_name(spa), pool) != 0) {
2046		if (spa)
2047			spa_close(spa, (void *)zdb_read_block);
2048		error = spa_open(pool, spap, (void *)zdb_read_block);
2049		if (error)
2050			fatal("Failed to open pool '%s': %s",
2051			    pool, strerror(error));
2052		spa = *spap;
2053	}
2054
2055	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2056	if (vd == NULL) {
2057		(void) printf("***Invalid vdev: %s\n", vdev);
2058		free(dup);
2059		return;
2060	} else {
2061		if (vd->vdev_path)
2062			(void) printf("Found vdev: %s\n", vd->vdev_path);
2063		else
2064			(void) printf("Found vdev type: %s\n",
2065			    vd->vdev_ops->vdev_op_type);
2066	}
2067
2068	buf = umem_alloc(size, UMEM_NOFAIL);
2069
2070	zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2071	    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY;
2072
2073	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2074	zio = zio_root(spa, NULL, NULL, 0);
2075	/* XXX todo - cons up a BP so RAID-Z will be happy */
2076	zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2077	    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2078	error = zio_wait(zio);
2079	spa_config_exit(spa, SCL_STATE, FTAG);
2080
2081	if (error) {
2082		(void) printf("Read of %s failed, error: %d\n", thing, error);
2083		goto out;
2084	}
2085
2086	if (flags & ZDB_FLAG_PRINT_BLKPTR)
2087		zdb_print_blkptr((blkptr_t *)(void *)
2088		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2089	else if (flags & ZDB_FLAG_RAW)
2090		zdb_dump_block_raw(buf, size, flags);
2091	else if (flags & ZDB_FLAG_INDIRECT)
2092		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2093		    flags);
2094	else if (flags & ZDB_FLAG_GBH)
2095		zdb_dump_gbh(buf, flags);
2096	else
2097		zdb_dump_block(thing, buf, size, flags);
2098
2099out:
2100	umem_free(buf, size);
2101	free(dup);
2102}
2103
2104static boolean_t
2105nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2106{
2107	char *s;
2108
2109	if (nvlist_lookup_string(config, name, &s) != 0)
2110		return (B_FALSE);
2111
2112	return (strcmp(s, tgt) == 0);
2113}
2114
2115static boolean_t
2116nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2117{
2118	uint64_t val;
2119
2120	if (nvlist_lookup_uint64(config, name, &val) != 0)
2121		return (B_FALSE);
2122
2123	return (val == tgt);
2124}
2125
2126static boolean_t
2127vdev_child_guid_match(nvlist_t *vdev, uint64_t guid)
2128{
2129	nvlist_t **child;
2130	uint_t c, children;
2131
2132	verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2133	    &child, &children) == 0);
2134	for (c = 0; c < children; ++c)
2135		if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid))
2136			return (B_TRUE);
2137	return (B_FALSE);
2138}
2139
2140static boolean_t
2141vdev_child_string_match(nvlist_t *vdev, char *tgt)
2142{
2143	nvlist_t **child;
2144	uint_t c, children;
2145
2146	verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2147	    &child, &children) == 0);
2148	for (c = 0; c < children; ++c) {
2149		if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) ||
2150		    nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt))
2151			return (B_TRUE);
2152	}
2153	return (B_FALSE);
2154}
2155
2156static boolean_t
2157vdev_guid_match(nvlist_t *config, uint64_t guid)
2158{
2159	nvlist_t *nvroot;
2160
2161	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2162	    &nvroot) == 0);
2163
2164	return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) ||
2165	    vdev_child_guid_match(nvroot, guid));
2166}
2167
2168static boolean_t
2169vdev_string_match(nvlist_t *config, char *tgt)
2170{
2171	nvlist_t *nvroot;
2172
2173	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2174	    &nvroot) == 0);
2175
2176	return (vdev_child_string_match(nvroot, tgt));
2177}
2178
2179static boolean_t
2180pool_match(nvlist_t *config, char *tgt)
2181{
2182	uint64_t guid = strtoull(tgt, NULL, 0);
2183
2184	if (guid != 0) {
2185		return (
2186		    nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) ||
2187		    vdev_guid_match(config, guid));
2188	} else {
2189		return (
2190		    nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) ||
2191		    vdev_string_match(config, tgt));
2192	}
2193}
2194
2195static int
2196find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir)
2197{
2198	nvlist_t *pools;
2199	int error = ENOENT;
2200	nvlist_t *match = NULL;
2201
2202	if (vdev_dir != NULL)
2203		pools = zpool_find_import_activeok(g_zfs, 1, &vdev_dir);
2204	else
2205		pools = zpool_find_import_activeok(g_zfs, 0, NULL);
2206
2207	if (pools != NULL) {
2208		nvpair_t *elem = NULL;
2209
2210		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2211			verify(nvpair_value_nvlist(elem, configp) == 0);
2212			if (pool_match(*configp, pool_id)) {
2213				if (match != NULL) {
2214					(void) fatal(
2215					    "More than one matching pool - "
2216					    "specify guid/devid/device path.");
2217				} else {
2218					match = *configp;
2219					error = 0;
2220				}
2221			}
2222		}
2223	}
2224
2225	*configp = error ? NULL : match;
2226
2227	return (error);
2228}
2229
2230int
2231main(int argc, char **argv)
2232{
2233	int i, c;
2234	struct rlimit rl = { 1024, 1024 };
2235	spa_t *spa;
2236	objset_t *os = NULL;
2237	char *endstr;
2238	int dump_all = 1;
2239	int verbose = 0;
2240	int error;
2241	int exported = 0;
2242	char *vdev_dir = NULL;
2243
2244	(void) setrlimit(RLIMIT_NOFILE, &rl);
2245	(void) enable_extended_FILE_stdio(-1, -1);
2246
2247	dprintf_setup(&argc, argv);
2248
2249	while ((c = getopt(argc, argv, "udibcsvCLS:U:lRep:t:")) != -1) {
2250		switch (c) {
2251		case 'u':
2252		case 'd':
2253		case 'i':
2254		case 'b':
2255		case 'c':
2256		case 's':
2257		case 'C':
2258		case 'l':
2259		case 'R':
2260			dump_opt[c]++;
2261			dump_all = 0;
2262			break;
2263		case 'L':
2264			dump_opt[c]++;
2265			break;
2266		case 'v':
2267			verbose++;
2268			break;
2269		case 'U':
2270			spa_config_path = optarg;
2271			break;
2272		case 'e':
2273			exported = 1;
2274			break;
2275		case 'p':
2276			vdev_dir = optarg;
2277			break;
2278		case 'S':
2279			dump_opt[c]++;
2280			dump_all = 0;
2281			zdb_sig_user_data = (strncmp(optarg, "user:", 5) == 0);
2282			if (!zdb_sig_user_data && strncmp(optarg, "all:", 4))
2283				usage();
2284			endstr = strchr(optarg, ':') + 1;
2285			if (strcmp(endstr, "fletcher2") == 0)
2286				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2287			else if (strcmp(endstr, "fletcher4") == 0)
2288				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_4;
2289			else if (strcmp(endstr, "sha256") == 0)
2290				zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
2291			else if (strcmp(endstr, "all") == 0)
2292				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2293			else
2294				usage();
2295			break;
2296		case 't':
2297			ub_max_txg = strtoull(optarg, NULL, 0);
2298			if (ub_max_txg < TXG_INITIAL) {
2299				(void) fprintf(stderr, "incorrect txg "
2300				    "specified: %s\n", optarg);
2301				usage();
2302			}
2303			break;
2304		default:
2305			usage();
2306			break;
2307		}
2308	}
2309
2310	if (vdev_dir != NULL && exported == 0) {
2311		(void) fprintf(stderr, "-p option requires use of -e\n");
2312		usage();
2313	}
2314
2315	kernel_init(FREAD);
2316	g_zfs = libzfs_init();
2317	ASSERT(g_zfs != NULL);
2318
2319	for (c = 0; c < 256; c++) {
2320		if (dump_all && c != 'l' && c != 'R')
2321			dump_opt[c] = 1;
2322		if (dump_opt[c])
2323			dump_opt[c] += verbose;
2324	}
2325
2326	argc -= optind;
2327	argv += optind;
2328
2329	if (argc < 1) {
2330		if (dump_opt['C']) {
2331			dump_cachefile(spa_config_path);
2332			return (0);
2333		}
2334		usage();
2335	}
2336
2337	if (dump_opt['l']) {
2338		dump_label(argv[0]);
2339		return (0);
2340	}
2341
2342	if (dump_opt['R']) {
2343		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2344		flagbits['c'] = ZDB_FLAG_CHECKSUM;
2345		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2346		flagbits['e'] = ZDB_FLAG_BSWAP;
2347		flagbits['g'] = ZDB_FLAG_GBH;
2348		flagbits['i'] = ZDB_FLAG_INDIRECT;
2349		flagbits['p'] = ZDB_FLAG_PHYS;
2350		flagbits['r'] = ZDB_FLAG_RAW;
2351
2352		spa = NULL;
2353		while (argv[0]) {
2354			zdb_read_block(argv[0], &spa);
2355			argv++;
2356			argc--;
2357		}
2358		if (spa)
2359			spa_close(spa, (void *)zdb_read_block);
2360		return (0);
2361	}
2362
2363	if (dump_opt['C'])
2364		dump_config(argv[0]);
2365
2366	error = 0;
2367	if (exported) {
2368		/*
2369		 * Check to see if the name refers to an exported zpool
2370		 */
2371		char *slash;
2372		nvlist_t *exported_conf = NULL;
2373
2374		if ((slash = strchr(argv[0], '/')) != NULL)
2375			*slash = '\0';
2376
2377		error = find_exported_zpool(argv[0], &exported_conf, vdev_dir);
2378		if (error == 0) {
2379			nvlist_t *nvl = NULL;
2380
2381			if (vdev_dir != NULL) {
2382				if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2383					error = ENOMEM;
2384				else if (nvlist_add_string(nvl,
2385				    zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2386				    vdev_dir) != 0)
2387					error = ENOMEM;
2388			}
2389
2390			if (error == 0)
2391				error = spa_import_faulted(argv[0],
2392				    exported_conf, nvl);
2393
2394			nvlist_free(nvl);
2395		}
2396
2397		if (slash != NULL)
2398			*slash = '/';
2399	}
2400
2401	if (error == 0) {
2402		if (strchr(argv[0], '/') != NULL) {
2403			error = dmu_objset_open(argv[0], DMU_OST_ANY,
2404			    DS_MODE_USER | DS_MODE_READONLY, &os);
2405		} else {
2406			error = spa_open(argv[0], &spa, FTAG);
2407		}
2408	}
2409
2410	if (error)
2411		fatal("can't open %s: %s", argv[0], strerror(error));
2412
2413	argv++;
2414	if (--argc > 0) {
2415		zopt_objects = argc;
2416		zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2417		for (i = 0; i < zopt_objects; i++) {
2418			errno = 0;
2419			zopt_object[i] = strtoull(argv[i], NULL, 0);
2420			if (zopt_object[i] == 0 && errno != 0)
2421				fatal("bad object number %s: %s",
2422				    argv[i], strerror(errno));
2423		}
2424	}
2425
2426	if (os != NULL) {
2427		dump_dir(os);
2428		dmu_objset_close(os);
2429	} else {
2430		dump_zpool(spa);
2431		spa_close(spa, FTAG);
2432	}
2433
2434	fuid_table_destroy();
2435
2436	libzfs_fini(g_zfs);
2437	kernel_fini();
2438
2439	return (0);
2440}
2441