zdb.c revision 6809eb4e2a4a94bcc76229c7b5108b96134537b6
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 2009 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
128/*
129 * Called for usage errors that are discovered after a call to spa_open(),
130 * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
131 */
132
133static void
134fatal(const char *fmt, ...)
135{
136	va_list ap;
137
138	va_start(ap, fmt);
139	(void) fprintf(stderr, "%s: ", cmdname);
140	(void) vfprintf(stderr, fmt, ap);
141	va_end(ap);
142	(void) fprintf(stderr, "\n");
143
144	exit(1);
145}
146
147static void
148dump_nvlist(nvlist_t *list, int indent)
149{
150	nvpair_t *elem = NULL;
151
152	while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
153		switch (nvpair_type(elem)) {
154		case DATA_TYPE_STRING:
155			{
156				char *value;
157
158				VERIFY(nvpair_value_string(elem, &value) == 0);
159				(void) printf("%*s%s='%s'\n", indent, "",
160				    nvpair_name(elem), value);
161			}
162			break;
163
164		case DATA_TYPE_UINT64:
165			{
166				uint64_t value;
167
168				VERIFY(nvpair_value_uint64(elem, &value) == 0);
169				(void) printf("%*s%s=%llu\n", indent, "",
170				    nvpair_name(elem), (u_longlong_t)value);
171			}
172			break;
173
174		case DATA_TYPE_NVLIST:
175			{
176				nvlist_t *value;
177
178				VERIFY(nvpair_value_nvlist(elem, &value) == 0);
179				(void) printf("%*s%s\n", indent, "",
180				    nvpair_name(elem));
181				dump_nvlist(value, indent + 4);
182			}
183			break;
184
185		case DATA_TYPE_NVLIST_ARRAY:
186			{
187				nvlist_t **value;
188				uint_t c, count;
189
190				VERIFY(nvpair_value_nvlist_array(elem, &value,
191				    &count) == 0);
192
193				for (c = 0; c < count; c++) {
194					(void) printf("%*s%s[%u]\n", indent, "",
195					    nvpair_name(elem), c);
196					dump_nvlist(value[c], indent + 8);
197				}
198			}
199			break;
200
201		default:
202
203			(void) printf("bad config type %d for %s\n",
204			    nvpair_type(elem), nvpair_name(elem));
205		}
206	}
207}
208
209/* ARGSUSED */
210static void
211dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
212{
213	nvlist_t *nv;
214	size_t nvsize = *(uint64_t *)data;
215	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
216
217	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed));
218
219	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
220
221	umem_free(packed, nvsize);
222
223	dump_nvlist(nv, 8);
224
225	nvlist_free(nv);
226}
227
228const char dump_zap_stars[] = "****************************************";
229const int dump_zap_width = sizeof (dump_zap_stars) - 1;
230
231static void
232dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
233{
234	int i;
235	int minidx = ZAP_HISTOGRAM_SIZE - 1;
236	int maxidx = 0;
237	uint64_t max = 0;
238
239	for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
240		if (histo[i] > max)
241			max = histo[i];
242		if (histo[i] > 0 && i > maxidx)
243			maxidx = i;
244		if (histo[i] > 0 && i < minidx)
245			minidx = i;
246	}
247
248	if (max < dump_zap_width)
249		max = dump_zap_width;
250
251	for (i = minidx; i <= maxidx; i++)
252		(void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
253		    &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
254}
255
256static void
257dump_zap_stats(objset_t *os, uint64_t object)
258{
259	int error;
260	zap_stats_t zs;
261
262	error = zap_get_stats(os, object, &zs);
263	if (error)
264		return;
265
266	if (zs.zs_ptrtbl_len == 0) {
267		ASSERT(zs.zs_num_blocks == 1);
268		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
269		    (u_longlong_t)zs.zs_blocksize,
270		    (u_longlong_t)zs.zs_num_entries);
271		return;
272	}
273
274	(void) printf("\tFat ZAP stats:\n");
275
276	(void) printf("\t\tPointer table:\n");
277	(void) printf("\t\t\t%llu elements\n",
278	    (u_longlong_t)zs.zs_ptrtbl_len);
279	(void) printf("\t\t\tzt_blk: %llu\n",
280	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
281	(void) printf("\t\t\tzt_numblks: %llu\n",
282	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
283	(void) printf("\t\t\tzt_shift: %llu\n",
284	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
285	(void) printf("\t\t\tzt_blks_copied: %llu\n",
286	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
287	(void) printf("\t\t\tzt_nextblk: %llu\n",
288	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
289
290	(void) printf("\t\tZAP entries: %llu\n",
291	    (u_longlong_t)zs.zs_num_entries);
292	(void) printf("\t\tLeaf blocks: %llu\n",
293	    (u_longlong_t)zs.zs_num_leafs);
294	(void) printf("\t\tTotal blocks: %llu\n",
295	    (u_longlong_t)zs.zs_num_blocks);
296	(void) printf("\t\tzap_block_type: 0x%llx\n",
297	    (u_longlong_t)zs.zs_block_type);
298	(void) printf("\t\tzap_magic: 0x%llx\n",
299	    (u_longlong_t)zs.zs_magic);
300	(void) printf("\t\tzap_salt: 0x%llx\n",
301	    (u_longlong_t)zs.zs_salt);
302
303	(void) printf("\t\tLeafs with 2^n pointers:\n");
304	dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
305
306	(void) printf("\t\tBlocks with n*5 entries:\n");
307	dump_zap_histogram(zs.zs_blocks_with_n5_entries);
308
309	(void) printf("\t\tBlocks n/10 full:\n");
310	dump_zap_histogram(zs.zs_blocks_n_tenths_full);
311
312	(void) printf("\t\tEntries with n chunks:\n");
313	dump_zap_histogram(zs.zs_entries_using_n_chunks);
314
315	(void) printf("\t\tBuckets with n entries:\n");
316	dump_zap_histogram(zs.zs_buckets_with_n_entries);
317}
318
319/*ARGSUSED*/
320static void
321dump_none(objset_t *os, uint64_t object, void *data, size_t size)
322{
323}
324
325/*ARGSUSED*/
326void
327dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
328{
329}
330
331/*ARGSUSED*/
332static void
333dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
334{
335}
336
337/*ARGSUSED*/
338static void
339dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
340{
341	zap_cursor_t zc;
342	zap_attribute_t attr;
343	void *prop;
344	int i;
345
346	dump_zap_stats(os, object);
347	(void) printf("\n");
348
349	for (zap_cursor_init(&zc, os, object);
350	    zap_cursor_retrieve(&zc, &attr) == 0;
351	    zap_cursor_advance(&zc)) {
352		(void) printf("\t\t%s = ", attr.za_name);
353		if (attr.za_num_integers == 0) {
354			(void) printf("\n");
355			continue;
356		}
357		prop = umem_zalloc(attr.za_num_integers *
358		    attr.za_integer_length, UMEM_NOFAIL);
359		(void) zap_lookup(os, object, attr.za_name,
360		    attr.za_integer_length, attr.za_num_integers, prop);
361		if (attr.za_integer_length == 1) {
362			(void) printf("%s", (char *)prop);
363		} else {
364			for (i = 0; i < attr.za_num_integers; i++) {
365				switch (attr.za_integer_length) {
366				case 2:
367					(void) printf("%u ",
368					    ((uint16_t *)prop)[i]);
369					break;
370				case 4:
371					(void) printf("%u ",
372					    ((uint32_t *)prop)[i]);
373					break;
374				case 8:
375					(void) printf("%lld ",
376					    (u_longlong_t)((int64_t *)prop)[i]);
377					break;
378				}
379			}
380		}
381		(void) printf("\n");
382		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
383	}
384	zap_cursor_fini(&zc);
385}
386
387/*ARGSUSED*/
388static void
389dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
390{
391	zap_cursor_t zc;
392	zap_attribute_t attr;
393	const char *typenames[] = {
394		/* 0 */ "not specified",
395		/* 1 */ "FIFO",
396		/* 2 */ "Character Device",
397		/* 3 */ "3 (invalid)",
398		/* 4 */ "Directory",
399		/* 5 */ "5 (invalid)",
400		/* 6 */ "Block Device",
401		/* 7 */ "7 (invalid)",
402		/* 8 */ "Regular File",
403		/* 9 */ "9 (invalid)",
404		/* 10 */ "Symbolic Link",
405		/* 11 */ "11 (invalid)",
406		/* 12 */ "Socket",
407		/* 13 */ "Door",
408		/* 14 */ "Event Port",
409		/* 15 */ "15 (invalid)",
410	};
411
412	dump_zap_stats(os, object);
413	(void) printf("\n");
414
415	for (zap_cursor_init(&zc, os, object);
416	    zap_cursor_retrieve(&zc, &attr) == 0;
417	    zap_cursor_advance(&zc)) {
418		(void) printf("\t\t%s = %lld (type: %s)\n",
419		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
420		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
421	}
422	zap_cursor_fini(&zc);
423}
424
425static void
426dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
427{
428	uint64_t alloc, offset, entry;
429	uint8_t mapshift = sm->sm_shift;
430	uint64_t mapstart = sm->sm_start;
431	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
432			    "INVALID", "INVALID", "INVALID", "INVALID" };
433
434	if (smo->smo_object == 0)
435		return;
436
437	/*
438	 * Print out the freelist entries in both encoded and decoded form.
439	 */
440	alloc = 0;
441	for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
442		VERIFY(0 == dmu_read(os, smo->smo_object, offset,
443		    sizeof (entry), &entry));
444		if (SM_DEBUG_DECODE(entry)) {
445			(void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n",
446			    (u_longlong_t)(offset / sizeof (entry)),
447			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
448			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
449			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
450		} else {
451			(void) printf("\t\t[%4llu]    %c  range:"
452			    " %08llx-%08llx  size: %06llx\n",
453			    (u_longlong_t)(offset / sizeof (entry)),
454			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
455			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
456			    mapshift) + mapstart),
457			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
458			    mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
459			    mapshift)),
460			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
461			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
462				alloc += SM_RUN_DECODE(entry) << mapshift;
463			else
464				alloc -= SM_RUN_DECODE(entry) << mapshift;
465		}
466	}
467	if (alloc != smo->smo_alloc) {
468		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
469		    "with space map summary (%llu)\n",
470		    (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
471	}
472}
473
474static void
475dump_metaslab(metaslab_t *msp)
476{
477	char freebuf[5];
478	space_map_obj_t *smo = &msp->ms_smo;
479	vdev_t *vd = msp->ms_group->mg_vd;
480	spa_t *spa = vd->vdev_spa;
481
482	nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf);
483
484	if (dump_opt['d'] <= 5) {
485		(void) printf("\t%10llx   %10llu   %5s\n",
486		    (u_longlong_t)msp->ms_map.sm_start,
487		    (u_longlong_t)smo->smo_object,
488		    freebuf);
489		return;
490	}
491
492	(void) printf(
493	    "\tvdev %llu   offset %08llx   spacemap %4llu   free %5s\n",
494	    (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start,
495	    (u_longlong_t)smo->smo_object, freebuf);
496
497	ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift));
498
499	dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map);
500}
501
502static void
503dump_metaslabs(spa_t *spa)
504{
505	vdev_t *rvd = spa->spa_root_vdev;
506	vdev_t *vd;
507	int c, m;
508
509	(void) printf("\nMetaslabs:\n");
510
511	for (c = 0; c < rvd->vdev_children; c++) {
512		vd = rvd->vdev_child[c];
513
514		(void) printf("\n    vdev %llu\n\n", (u_longlong_t)vd->vdev_id);
515
516		if (dump_opt['d'] <= 5) {
517			(void) printf("\t%10s   %10s   %5s\n",
518			    "offset", "spacemap", "free");
519			(void) printf("\t%10s   %10s   %5s\n",
520			    "------", "--------", "----");
521		}
522		for (m = 0; m < vd->vdev_ms_count; m++)
523			dump_metaslab(vd->vdev_ms[m]);
524		(void) printf("\n");
525	}
526}
527
528static void
529dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
530{
531	char *prefix = (void *)sm;
532
533	(void) printf("%s [%llu,%llu) length %llu\n",
534	    prefix,
535	    (u_longlong_t)start,
536	    (u_longlong_t)(start + size),
537	    (u_longlong_t)(size));
538}
539
540static void
541dump_dtl(vdev_t *vd, int indent)
542{
543	spa_t *spa = vd->vdev_spa;
544	boolean_t required;
545	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
546	char prefix[256];
547
548	spa_vdev_state_enter(spa);
549	required = vdev_dtl_required(vd);
550	(void) spa_vdev_state_exit(spa, NULL, 0);
551
552	if (indent == 0)
553		(void) printf("\nDirty time logs:\n\n");
554
555	(void) printf("\t%*s%s [%s]\n", indent, "",
556	    vd->vdev_path ? vd->vdev_path :
557	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
558	    required ? "DTL-required" : "DTL-expendable");
559
560	for (int t = 0; t < DTL_TYPES; t++) {
561		space_map_t *sm = &vd->vdev_dtl[t];
562		if (sm->sm_space == 0)
563			continue;
564		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
565		    indent + 2, "", name[t]);
566		mutex_enter(sm->sm_lock);
567		space_map_walk(sm, dump_dtl_seg, (void *)prefix);
568		mutex_exit(sm->sm_lock);
569		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
570			dump_spacemap(spa->spa_meta_objset,
571			    &vd->vdev_dtl_smo, sm);
572	}
573
574	for (int c = 0; c < vd->vdev_children; c++)
575		dump_dtl(vd->vdev_child[c], indent + 4);
576}
577
578/*ARGSUSED*/
579static void
580dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
581{
582}
583
584static uint64_t
585blkid2offset(const dnode_phys_t *dnp, int level, uint64_t blkid)
586{
587	if (level < 0)
588		return (blkid);
589
590	return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
591	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
592}
593
594static void
595sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas)
596{
597	dva_t *dva = bp->blk_dva;
598	int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1;
599	int i;
600
601	blkbuf[0] = '\0';
602
603	for (i = 0; i < ndvas; i++)
604		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
605		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
606		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
607		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
608
609	(void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu",
610	    (u_longlong_t)BP_GET_LSIZE(bp),
611	    (u_longlong_t)BP_GET_PSIZE(bp),
612	    (u_longlong_t)bp->blk_fill,
613	    (u_longlong_t)bp->blk_birth);
614}
615
616static void
617print_indirect(blkptr_t *bp, const zbookmark_t *zb,
618    const dnode_phys_t *dnp)
619{
620	char blkbuf[BP_SPRINTF_LEN];
621	int l;
622
623	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
624	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
625
626	(void) printf("%16llx ",
627	    (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid));
628
629	ASSERT(zb->zb_level >= 0);
630
631	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
632		if (l == zb->zb_level) {
633			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
634		} else {
635			(void) printf(" ");
636		}
637	}
638
639	sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
640	(void) printf("%s\n", blkbuf);
641}
642
643#define	SET_BOOKMARK(zb, objset, object, level, blkid)  \
644{                                                       \
645	(zb)->zb_objset = objset;                       \
646	(zb)->zb_object = object;                       \
647	(zb)->zb_level = level;                         \
648	(zb)->zb_blkid = blkid;                         \
649}
650
651static int
652visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
653    blkptr_t *bp, const zbookmark_t *zb)
654{
655	int err;
656
657	if (bp->blk_birth == 0)
658		return (0);
659
660	print_indirect(bp, zb, dnp);
661
662	if (BP_GET_LEVEL(bp) > 0) {
663		uint32_t flags = ARC_WAIT;
664		int i;
665		blkptr_t *cbp;
666		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
667		arc_buf_t *buf;
668		uint64_t fill = 0;
669
670		err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
671		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
672		if (err)
673			return (err);
674
675		/* recursively visit blocks below this */
676		cbp = buf->b_data;
677		for (i = 0; i < epb; i++, cbp++) {
678			zbookmark_t czb;
679
680			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
681			    zb->zb_level - 1,
682			    zb->zb_blkid * epb + i);
683			err = visit_indirect(spa, dnp, cbp, &czb);
684			if (err)
685				break;
686			fill += cbp->blk_fill;
687		}
688		if (!err)
689			ASSERT3U(fill, ==, bp->blk_fill);
690		(void) arc_buf_remove_ref(buf, &buf);
691	}
692
693	return (err);
694}
695
696/*ARGSUSED*/
697static void
698dump_indirect(dnode_t *dn)
699{
700	dnode_phys_t *dnp = dn->dn_phys;
701	int j;
702	zbookmark_t czb;
703
704	(void) printf("Indirect blocks:\n");
705
706	SET_BOOKMARK(&czb, dmu_objset_id(&dn->dn_objset->os),
707	    dn->dn_object, dnp->dn_nlevels - 1, 0);
708	for (j = 0; j < dnp->dn_nblkptr; j++) {
709		czb.zb_blkid = j;
710		(void) visit_indirect(dmu_objset_spa(&dn->dn_objset->os), dnp,
711		    &dnp->dn_blkptr[j], &czb);
712	}
713
714	(void) printf("\n");
715}
716
717/*ARGSUSED*/
718static void
719dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
720{
721	dsl_dir_phys_t *dd = data;
722	time_t crtime;
723	char nice[6];
724
725	if (dd == NULL)
726		return;
727
728	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
729
730	crtime = dd->dd_creation_time;
731	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
732	(void) printf("\t\thead_dataset_obj = %llu\n",
733	    (u_longlong_t)dd->dd_head_dataset_obj);
734	(void) printf("\t\tparent_dir_obj = %llu\n",
735	    (u_longlong_t)dd->dd_parent_obj);
736	(void) printf("\t\torigin_obj = %llu\n",
737	    (u_longlong_t)dd->dd_origin_obj);
738	(void) printf("\t\tchild_dir_zapobj = %llu\n",
739	    (u_longlong_t)dd->dd_child_dir_zapobj);
740	nicenum(dd->dd_used_bytes, nice);
741	(void) printf("\t\tused_bytes = %s\n", nice);
742	nicenum(dd->dd_compressed_bytes, nice);
743	(void) printf("\t\tcompressed_bytes = %s\n", nice);
744	nicenum(dd->dd_uncompressed_bytes, nice);
745	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
746	nicenum(dd->dd_quota, nice);
747	(void) printf("\t\tquota = %s\n", nice);
748	nicenum(dd->dd_reserved, nice);
749	(void) printf("\t\treserved = %s\n", nice);
750	(void) printf("\t\tprops_zapobj = %llu\n",
751	    (u_longlong_t)dd->dd_props_zapobj);
752	(void) printf("\t\tdeleg_zapobj = %llu\n",
753	    (u_longlong_t)dd->dd_deleg_zapobj);
754	(void) printf("\t\tflags = %llx\n",
755	    (u_longlong_t)dd->dd_flags);
756
757#define	DO(which) \
758	nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
759	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
760	DO(HEAD);
761	DO(SNAP);
762	DO(CHILD);
763	DO(CHILD_RSRV);
764	DO(REFRSRV);
765#undef DO
766}
767
768/*ARGSUSED*/
769static void
770dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
771{
772	dsl_dataset_phys_t *ds = data;
773	time_t crtime;
774	char used[6], compressed[6], uncompressed[6], unique[6];
775	char blkbuf[BP_SPRINTF_LEN];
776
777	if (ds == NULL)
778		return;
779
780	ASSERT(size == sizeof (*ds));
781	crtime = ds->ds_creation_time;
782	nicenum(ds->ds_used_bytes, used);
783	nicenum(ds->ds_compressed_bytes, compressed);
784	nicenum(ds->ds_uncompressed_bytes, uncompressed);
785	nicenum(ds->ds_unique_bytes, unique);
786	sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp);
787
788	(void) printf("\t\tdir_obj = %llu\n",
789	    (u_longlong_t)ds->ds_dir_obj);
790	(void) printf("\t\tprev_snap_obj = %llu\n",
791	    (u_longlong_t)ds->ds_prev_snap_obj);
792	(void) printf("\t\tprev_snap_txg = %llu\n",
793	    (u_longlong_t)ds->ds_prev_snap_txg);
794	(void) printf("\t\tnext_snap_obj = %llu\n",
795	    (u_longlong_t)ds->ds_next_snap_obj);
796	(void) printf("\t\tsnapnames_zapobj = %llu\n",
797	    (u_longlong_t)ds->ds_snapnames_zapobj);
798	(void) printf("\t\tnum_children = %llu\n",
799	    (u_longlong_t)ds->ds_num_children);
800	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
801	(void) printf("\t\tcreation_txg = %llu\n",
802	    (u_longlong_t)ds->ds_creation_txg);
803	(void) printf("\t\tdeadlist_obj = %llu\n",
804	    (u_longlong_t)ds->ds_deadlist_obj);
805	(void) printf("\t\tused_bytes = %s\n", used);
806	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
807	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
808	(void) printf("\t\tunique = %s\n", unique);
809	(void) printf("\t\tfsid_guid = %llu\n",
810	    (u_longlong_t)ds->ds_fsid_guid);
811	(void) printf("\t\tguid = %llu\n",
812	    (u_longlong_t)ds->ds_guid);
813	(void) printf("\t\tflags = %llx\n",
814	    (u_longlong_t)ds->ds_flags);
815	(void) printf("\t\tnext_clones_obj = %llu\n",
816	    (u_longlong_t)ds->ds_next_clones_obj);
817	(void) printf("\t\tprops_obj = %llu\n",
818	    (u_longlong_t)ds->ds_props_obj);
819	(void) printf("\t\tbp = %s\n", blkbuf);
820}
821
822static void
823dump_bplist(objset_t *mos, uint64_t object, char *name)
824{
825	bplist_t bpl = { 0 };
826	blkptr_t blk, *bp = &blk;
827	uint64_t itor = 0;
828	char bytes[6];
829	char comp[6];
830	char uncomp[6];
831
832	if (dump_opt['d'] < 3)
833		return;
834
835	mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL);
836	VERIFY(0 == bplist_open(&bpl, mos, object));
837	if (bplist_empty(&bpl)) {
838		bplist_close(&bpl);
839		mutex_destroy(&bpl.bpl_lock);
840		return;
841	}
842
843	nicenum(bpl.bpl_phys->bpl_bytes, bytes);
844	if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) {
845		nicenum(bpl.bpl_phys->bpl_comp, comp);
846		nicenum(bpl.bpl_phys->bpl_uncomp, uncomp);
847		(void) printf("\n    %s: %llu entries, %s (%s/%s comp)\n",
848		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries,
849		    bytes, comp, uncomp);
850	} else {
851		(void) printf("\n    %s: %llu entries, %s\n",
852		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes);
853	}
854
855	if (dump_opt['d'] < 5) {
856		bplist_close(&bpl);
857		mutex_destroy(&bpl.bpl_lock);
858		return;
859	}
860
861	(void) printf("\n");
862
863	while (bplist_iterate(&bpl, &itor, bp) == 0) {
864		char blkbuf[BP_SPRINTF_LEN];
865
866		ASSERT(bp->blk_birth != 0);
867		sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
868		(void) printf("\tItem %3llu: %s\n",
869		    (u_longlong_t)itor - 1, blkbuf);
870	}
871
872	bplist_close(&bpl);
873	mutex_destroy(&bpl.bpl_lock);
874}
875
876static avl_tree_t idx_tree;
877static avl_tree_t domain_tree;
878static boolean_t fuid_table_loaded;
879
880static void
881fuid_table_destroy()
882{
883	if (fuid_table_loaded) {
884		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
885		fuid_table_loaded = B_FALSE;
886	}
887}
888
889/*
890 * print uid or gid information.
891 * For normal POSIX id just the id is printed in decimal format.
892 * For CIFS files with FUID the fuid is printed in hex followed by
893 * the doman-rid string.
894 */
895static void
896print_idstr(uint64_t id, const char *id_type)
897{
898	if (FUID_INDEX(id)) {
899		char *domain;
900
901		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
902		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
903		    (u_longlong_t)id, domain, (int)FUID_RID(id));
904	} else {
905		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
906	}
907
908}
909
910static void
911dump_uidgid(objset_t *os, znode_phys_t *zp)
912{
913	uint32_t uid_idx, gid_idx;
914
915	uid_idx = FUID_INDEX(zp->zp_uid);
916	gid_idx = FUID_INDEX(zp->zp_gid);
917
918	/* Load domain table, if not already loaded */
919	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
920		uint64_t fuid_obj;
921
922		/* first find the fuid object.  It lives in the master node */
923		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
924		    8, 1, &fuid_obj) == 0);
925		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
926		(void) zfs_fuid_table_load(os, fuid_obj,
927		    &idx_tree, &domain_tree);
928		fuid_table_loaded = B_TRUE;
929	}
930
931	print_idstr(zp->zp_uid, "uid");
932	print_idstr(zp->zp_gid, "gid");
933}
934
935/*ARGSUSED*/
936static void
937dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
938{
939	znode_phys_t *zp = data;
940	time_t z_crtime, z_atime, z_mtime, z_ctime;
941	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
942	int error;
943
944	ASSERT(size >= sizeof (znode_phys_t));
945
946	error = zfs_obj_to_path(os, object, path, sizeof (path));
947	if (error != 0) {
948		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
949		    (u_longlong_t)object);
950	}
951
952	if (dump_opt['d'] < 3) {
953		(void) printf("\t%s\n", path);
954		return;
955	}
956
957	z_crtime = (time_t)zp->zp_crtime[0];
958	z_atime = (time_t)zp->zp_atime[0];
959	z_mtime = (time_t)zp->zp_mtime[0];
960	z_ctime = (time_t)zp->zp_ctime[0];
961
962	(void) printf("\tpath	%s\n", path);
963	dump_uidgid(os, zp);
964	(void) printf("\tatime	%s", ctime(&z_atime));
965	(void) printf("\tmtime	%s", ctime(&z_mtime));
966	(void) printf("\tctime	%s", ctime(&z_ctime));
967	(void) printf("\tcrtime	%s", ctime(&z_crtime));
968	(void) printf("\tgen	%llu\n", (u_longlong_t)zp->zp_gen);
969	(void) printf("\tmode	%llo\n", (u_longlong_t)zp->zp_mode);
970	(void) printf("\tsize	%llu\n", (u_longlong_t)zp->zp_size);
971	(void) printf("\tparent	%llu\n", (u_longlong_t)zp->zp_parent);
972	(void) printf("\tlinks	%llu\n", (u_longlong_t)zp->zp_links);
973	(void) printf("\txattr	%llu\n", (u_longlong_t)zp->zp_xattr);
974	(void) printf("\trdev	0x%016llx\n", (u_longlong_t)zp->zp_rdev);
975}
976
977/*ARGSUSED*/
978static void
979dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
980{
981}
982
983/*ARGSUSED*/
984static void
985dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
986{
987}
988
989static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
990	dump_none,		/* unallocated			*/
991	dump_zap,		/* object directory		*/
992	dump_uint64,		/* object array			*/
993	dump_none,		/* packed nvlist		*/
994	dump_packed_nvlist,	/* packed nvlist size		*/
995	dump_none,		/* bplist			*/
996	dump_none,		/* bplist header		*/
997	dump_none,		/* SPA space map header		*/
998	dump_none,		/* SPA space map		*/
999	dump_none,		/* ZIL intent log		*/
1000	dump_dnode,		/* DMU dnode			*/
1001	dump_dmu_objset,	/* DMU objset			*/
1002	dump_dsl_dir,		/* DSL directory		*/
1003	dump_zap,		/* DSL directory child map	*/
1004	dump_zap,		/* DSL dataset snap map		*/
1005	dump_zap,		/* DSL props			*/
1006	dump_dsl_dataset,	/* DSL dataset			*/
1007	dump_znode,		/* ZFS znode			*/
1008	dump_acl,		/* ZFS V0 ACL			*/
1009	dump_uint8,		/* ZFS plain file		*/
1010	dump_zpldir,		/* ZFS directory		*/
1011	dump_zap,		/* ZFS master node		*/
1012	dump_zap,		/* ZFS delete queue		*/
1013	dump_uint8,		/* zvol object			*/
1014	dump_zap,		/* zvol prop			*/
1015	dump_uint8,		/* other uint8[]		*/
1016	dump_uint64,		/* other uint64[]		*/
1017	dump_zap,		/* other ZAP			*/
1018	dump_zap,		/* persistent error log		*/
1019	dump_uint8,		/* SPA history			*/
1020	dump_uint64,		/* SPA history offsets		*/
1021	dump_zap,		/* Pool properties		*/
1022	dump_zap,		/* DSL permissions		*/
1023	dump_acl,		/* ZFS ACL			*/
1024	dump_uint8,		/* ZFS SYSACL			*/
1025	dump_none,		/* FUID nvlist			*/
1026	dump_packed_nvlist,	/* FUID nvlist size		*/
1027	dump_zap,		/* DSL dataset next clones	*/
1028	dump_zap,		/* DSL scrub queue		*/
1029	dump_zap,		/* ZFS user/group used		*/
1030	dump_zap,		/* ZFS user/group quota		*/
1031};
1032
1033static void
1034dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1035{
1036	dmu_buf_t *db = NULL;
1037	dmu_object_info_t doi;
1038	dnode_t *dn;
1039	void *bonus = NULL;
1040	size_t bsize = 0;
1041	char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1042	char aux[50];
1043	int error;
1044
1045	if (*print_header) {
1046		(void) printf("\n    Object  lvl   iblk   dblk  lsize"
1047		    "  asize  type\n");
1048		*print_header = 0;
1049	}
1050
1051	if (object == 0) {
1052		dn = os->os->os_meta_dnode;
1053	} else {
1054		error = dmu_bonus_hold(os, object, FTAG, &db);
1055		if (error)
1056			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1057			    object, error);
1058		bonus = db->db_data;
1059		bsize = db->db_size;
1060		dn = ((dmu_buf_impl_t *)db)->db_dnode;
1061	}
1062	dmu_object_info_from_dnode(dn, &doi);
1063
1064	nicenum(doi.doi_metadata_block_size, iblk);
1065	nicenum(doi.doi_data_block_size, dblk);
1066	nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1067	    lsize);
1068	nicenum(doi.doi_physical_blks << 9, asize);
1069	nicenum(doi.doi_bonus_size, bonus_size);
1070
1071	aux[0] = '\0';
1072
1073	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1074		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1075		    zio_checksum_table[doi.doi_checksum].ci_name);
1076	}
1077
1078	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1079		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1080		    zio_compress_table[doi.doi_compress].ci_name);
1081	}
1082
1083	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1084	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1085	    asize, dmu_ot[doi.doi_type].ot_name, aux);
1086
1087	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1088		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1089		    "", "", "", "", bonus_size, "bonus",
1090		    dmu_ot[doi.doi_bonus_type].ot_name);
1091	}
1092
1093	if (verbosity >= 4) {
1094		(void) printf("\tdnode flags: %s%s\n",
1095		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1096		    "USED_BYTES " : "",
1097		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1098		    "USERUSED_ACCOUNTED " : "");
1099		(void) printf("\tdnode maxblkid: %llu\n",
1100		    (longlong_t)dn->dn_phys->dn_maxblkid);
1101
1102		object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1103		object_viewer[doi.doi_type](os, object, NULL, 0);
1104		*print_header = 1;
1105	}
1106
1107	if (verbosity >= 5)
1108		dump_indirect(dn);
1109
1110	if (verbosity >= 5) {
1111		/*
1112		 * Report the list of segments that comprise the object.
1113		 */
1114		uint64_t start = 0;
1115		uint64_t end;
1116		uint64_t blkfill = 1;
1117		int minlvl = 1;
1118
1119		if (dn->dn_type == DMU_OT_DNODE) {
1120			minlvl = 0;
1121			blkfill = DNODES_PER_BLOCK;
1122		}
1123
1124		for (;;) {
1125			error = dnode_next_offset(dn,
1126			    0, &start, minlvl, blkfill, 0);
1127			if (error)
1128				break;
1129			end = start;
1130			error = dnode_next_offset(dn,
1131			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1132			nicenum(end - start, segsize);
1133			(void) printf("\t\tsegment [%016llx, %016llx)"
1134			    " size %5s\n", (u_longlong_t)start,
1135			    (u_longlong_t)end, segsize);
1136			if (error)
1137				break;
1138			start = end;
1139		}
1140	}
1141
1142	if (db != NULL)
1143		dmu_buf_rele(db, FTAG);
1144}
1145
1146static char *objset_types[DMU_OST_NUMTYPES] = {
1147	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1148
1149static void
1150dump_dir(objset_t *os)
1151{
1152	dmu_objset_stats_t dds;
1153	uint64_t object, object_count;
1154	uint64_t refdbytes, usedobjs, scratch;
1155	char numbuf[8];
1156	char blkbuf[BP_SPRINTF_LEN + 20];
1157	char osname[MAXNAMELEN];
1158	char *type = "UNKNOWN";
1159	int verbosity = dump_opt['d'];
1160	int print_header = 1;
1161	int i, error;
1162
1163	dmu_objset_fast_stat(os, &dds);
1164
1165	if (dds.dds_type < DMU_OST_NUMTYPES)
1166		type = objset_types[dds.dds_type];
1167
1168	if (dds.dds_type == DMU_OST_META) {
1169		dds.dds_creation_txg = TXG_INITIAL;
1170		usedobjs = os->os->os_rootbp->blk_fill;
1171		refdbytes = os->os->os_spa->spa_dsl_pool->
1172		    dp_mos_dir->dd_phys->dd_used_bytes;
1173	} else {
1174		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1175	}
1176
1177	ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1178
1179	nicenum(refdbytes, numbuf);
1180
1181	if (verbosity >= 4) {
1182		(void) sprintf(blkbuf + strlen(blkbuf), ", rootbp ");
1183		(void) sprintf_blkptr(blkbuf + strlen(blkbuf),
1184		    BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1185	} else {
1186		blkbuf[0] = '\0';
1187	}
1188
1189	dmu_objset_name(os, osname);
1190
1191	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1192	    "%s, %llu objects%s\n",
1193	    osname, type, (u_longlong_t)dmu_objset_id(os),
1194	    (u_longlong_t)dds.dds_creation_txg,
1195	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1196
1197	dump_intent_log(dmu_objset_zil(os));
1198
1199	if (dmu_objset_ds(os) != NULL)
1200		dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1201		    dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1202
1203	if (verbosity < 2)
1204		return;
1205
1206	if (os->os->os_rootbp->blk_birth == 0)
1207		return;
1208
1209	if (zopt_objects != 0) {
1210		for (i = 0; i < zopt_objects; i++)
1211			dump_object(os, zopt_object[i], verbosity,
1212			    &print_header);
1213		(void) printf("\n");
1214		return;
1215	}
1216
1217	dump_object(os, 0, verbosity, &print_header);
1218	object_count = 0;
1219	if (os->os->os_userused_dnode &&
1220	    os->os->os_userused_dnode->dn_type != 0) {
1221		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1222		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1223	}
1224
1225	object = 0;
1226	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1227		dump_object(os, object, verbosity, &print_header);
1228		object_count++;
1229	}
1230
1231	ASSERT3U(object_count, ==, usedobjs);
1232
1233	(void) printf("\n");
1234
1235	if (error != ESRCH) {
1236		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1237		abort();
1238	}
1239}
1240
1241static void
1242dump_uberblock(uberblock_t *ub)
1243{
1244	time_t timestamp = ub->ub_timestamp;
1245
1246	(void) printf("Uberblock\n\n");
1247	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1248	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1249	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1250	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1251	(void) printf("\ttimestamp = %llu UTC = %s",
1252	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1253	if (dump_opt['u'] >= 3) {
1254		char blkbuf[BP_SPRINTF_LEN];
1255		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1256		(void) printf("\trootbp = %s\n", blkbuf);
1257	}
1258	(void) printf("\n");
1259}
1260
1261static void
1262dump_config(const char *pool)
1263{
1264	spa_t *spa = NULL;
1265
1266	mutex_enter(&spa_namespace_lock);
1267	while ((spa = spa_next(spa)) != NULL) {
1268		if (pool == NULL)
1269			(void) printf("%s\n", spa_name(spa));
1270		if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1271			dump_nvlist(spa->spa_config, 4);
1272	}
1273	mutex_exit(&spa_namespace_lock);
1274}
1275
1276static void
1277dump_cachefile(const char *cachefile)
1278{
1279	int fd;
1280	struct stat64 statbuf;
1281	char *buf;
1282	nvlist_t *config;
1283
1284	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1285		(void) printf("cannot open '%s': %s\n", cachefile,
1286		    strerror(errno));
1287		exit(1);
1288	}
1289
1290	if (fstat64(fd, &statbuf) != 0) {
1291		(void) printf("failed to stat '%s': %s\n", cachefile,
1292		    strerror(errno));
1293		exit(1);
1294	}
1295
1296	if ((buf = malloc(statbuf.st_size)) == NULL) {
1297		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1298		    (u_longlong_t)statbuf.st_size);
1299		exit(1);
1300	}
1301
1302	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1303		(void) fprintf(stderr, "failed to read %llu bytes\n",
1304		    (u_longlong_t)statbuf.st_size);
1305		exit(1);
1306	}
1307
1308	(void) close(fd);
1309
1310	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1311		(void) fprintf(stderr, "failed to unpack nvlist\n");
1312		exit(1);
1313	}
1314
1315	free(buf);
1316
1317	dump_nvlist(config, 0);
1318
1319	nvlist_free(config);
1320}
1321
1322static void
1323dump_label(const char *dev)
1324{
1325	int fd;
1326	vdev_label_t label;
1327	char *buf = label.vl_vdev_phys.vp_nvlist;
1328	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1329	struct stat64 statbuf;
1330	uint64_t psize;
1331	int l;
1332
1333	if ((fd = open64(dev, O_RDONLY)) < 0) {
1334		(void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1335		exit(1);
1336	}
1337
1338	if (fstat64(fd, &statbuf) != 0) {
1339		(void) printf("failed to stat '%s': %s\n", dev,
1340		    strerror(errno));
1341		exit(1);
1342	}
1343
1344	psize = statbuf.st_size;
1345	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1346
1347	for (l = 0; l < VDEV_LABELS; l++) {
1348
1349		nvlist_t *config = NULL;
1350
1351		(void) printf("--------------------------------------------\n");
1352		(void) printf("LABEL %d\n", l);
1353		(void) printf("--------------------------------------------\n");
1354
1355		if (pread64(fd, &label, sizeof (label),
1356		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1357			(void) printf("failed to read label %d\n", l);
1358			continue;
1359		}
1360
1361		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1362			(void) printf("failed to unpack label %d\n", l);
1363			continue;
1364		}
1365		dump_nvlist(config, 4);
1366		nvlist_free(config);
1367	}
1368}
1369
1370/*ARGSUSED*/
1371static int
1372dump_one_dir(char *dsname, void *arg)
1373{
1374	int error;
1375	objset_t *os;
1376
1377	error = dmu_objset_open(dsname, DMU_OST_ANY,
1378	    DS_MODE_USER | DS_MODE_READONLY, &os);
1379	if (error) {
1380		(void) printf("Could not open %s\n", dsname);
1381		return (0);
1382	}
1383	dump_dir(os);
1384	dmu_objset_close(os);
1385	fuid_table_destroy();
1386	return (0);
1387}
1388
1389static void
1390zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1391{
1392	vdev_t *vd = sm->sm_ppd;
1393
1394	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1395	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
1396}
1397
1398/* ARGSUSED */
1399static void
1400zdb_space_map_load(space_map_t *sm)
1401{
1402}
1403
1404static void
1405zdb_space_map_unload(space_map_t *sm)
1406{
1407	space_map_vacate(sm, zdb_leak, sm);
1408}
1409
1410/* ARGSUSED */
1411static void
1412zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
1413{
1414}
1415
1416static space_map_ops_t zdb_space_map_ops = {
1417	zdb_space_map_load,
1418	zdb_space_map_unload,
1419	NULL,	/* alloc */
1420	zdb_space_map_claim,
1421	NULL	/* free */
1422};
1423
1424static void
1425zdb_leak_init(spa_t *spa)
1426{
1427	vdev_t *rvd = spa->spa_root_vdev;
1428
1429	for (int c = 0; c < rvd->vdev_children; c++) {
1430		vdev_t *vd = rvd->vdev_child[c];
1431		for (int m = 0; m < vd->vdev_ms_count; m++) {
1432			metaslab_t *msp = vd->vdev_ms[m];
1433			mutex_enter(&msp->ms_lock);
1434			VERIFY(space_map_load(&msp->ms_map, &zdb_space_map_ops,
1435			    SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset) == 0);
1436			msp->ms_map.sm_ppd = vd;
1437			mutex_exit(&msp->ms_lock);
1438		}
1439	}
1440}
1441
1442static void
1443zdb_leak_fini(spa_t *spa)
1444{
1445	vdev_t *rvd = spa->spa_root_vdev;
1446
1447	for (int c = 0; c < rvd->vdev_children; c++) {
1448		vdev_t *vd = rvd->vdev_child[c];
1449		for (int m = 0; m < vd->vdev_ms_count; m++) {
1450			metaslab_t *msp = vd->vdev_ms[m];
1451			mutex_enter(&msp->ms_lock);
1452			space_map_unload(&msp->ms_map);
1453			mutex_exit(&msp->ms_lock);
1454		}
1455	}
1456}
1457
1458/*
1459 * Verify that the sum of the sizes of all blocks in the pool adds up
1460 * to the SPA's sa_alloc total.
1461 */
1462typedef struct zdb_blkstats {
1463	uint64_t	zb_asize;
1464	uint64_t	zb_lsize;
1465	uint64_t	zb_psize;
1466	uint64_t	zb_count;
1467} zdb_blkstats_t;
1468
1469#define	DMU_OT_DEFERRED	DMU_OT_NONE
1470#define	DMU_OT_TOTAL	DMU_OT_NUMTYPES
1471
1472#define	ZB_TOTAL	DN_MAX_LEVELS
1473
1474typedef struct zdb_cb {
1475	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1476	uint64_t	zcb_errors[256];
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, dmu_object_type_t type)
1483{
1484	for (int i = 0; i < 4; i++) {
1485		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1486		int t = (i & 1) ? type : DMU_OT_TOTAL;
1487		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1488
1489		zb->zb_asize += BP_GET_ASIZE(bp);
1490		zb->zb_lsize += BP_GET_LSIZE(bp);
1491		zb->zb_psize += BP_GET_PSIZE(bp);
1492		zb->zb_count++;
1493	}
1494
1495	if (dump_opt['S']) {
1496		boolean_t print_sig;
1497
1498		print_sig = !zdb_sig_user_data || (BP_GET_LEVEL(bp) == 0 &&
1499		    BP_GET_TYPE(bp) == DMU_OT_PLAIN_FILE_CONTENTS);
1500
1501		if (BP_GET_CHECKSUM(bp) < zdb_sig_cksumalg)
1502			print_sig = B_FALSE;
1503
1504		if (print_sig) {
1505			(void) printf("%llu\t%lld\t%lld\t%s\t%s\t%s\t"
1506			    "%llx:%llx:%llx:%llx\n",
1507			    (u_longlong_t)BP_GET_LEVEL(bp),
1508			    (longlong_t)BP_GET_PSIZE(bp),
1509			    (longlong_t)BP_GET_NDVAS(bp),
1510			    dmu_ot[BP_GET_TYPE(bp)].ot_name,
1511			    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1512			    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name,
1513			    (u_longlong_t)bp->blk_cksum.zc_word[0],
1514			    (u_longlong_t)bp->blk_cksum.zc_word[1],
1515			    (u_longlong_t)bp->blk_cksum.zc_word[2],
1516			    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1517		}
1518	}
1519
1520	if (!dump_opt['L'])
1521		VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
1522		    NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
1523}
1524
1525static int
1526zdb_blkptr_cb(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
1527    const dnode_phys_t *dnp, void *arg)
1528{
1529	zdb_cb_t *zcb = arg;
1530	char blkbuf[BP_SPRINTF_LEN];
1531
1532	if (bp == NULL)
1533		return (0);
1534
1535	zdb_count_block(spa, zcb, bp, BP_GET_TYPE(bp));
1536
1537	if (dump_opt['c'] || dump_opt['S']) {
1538		int ioerr, size;
1539		void *data;
1540
1541		size = BP_GET_LSIZE(bp);
1542		data = malloc(size);
1543		ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1544		    NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
1545		    ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB, zb));
1546		free(data);
1547
1548		/* We expect io errors on intent log */
1549		if (ioerr && BP_GET_TYPE(bp) != DMU_OT_INTENT_LOG) {
1550			zcb->zcb_haderrors = 1;
1551			zcb->zcb_errors[ioerr]++;
1552
1553			if (dump_opt['b'] >= 2)
1554				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1555			else
1556				blkbuf[0] = '\0';
1557
1558			if (!dump_opt['S']) {
1559				(void) printf("zdb_blkptr_cb: "
1560				    "Got error %d reading "
1561				    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
1562				    ioerr,
1563				    (u_longlong_t)zb->zb_objset,
1564				    (u_longlong_t)zb->zb_object,
1565				    (u_longlong_t)zb->zb_level,
1566				    (u_longlong_t)zb->zb_blkid,
1567				    blkbuf);
1568			}
1569		}
1570	}
1571
1572	zcb->zcb_readfails = 0;
1573
1574	if (dump_opt['b'] >= 4) {
1575		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1576		(void) printf("objset %llu object %llu offset 0x%llx %s\n",
1577		    (u_longlong_t)zb->zb_objset,
1578		    (u_longlong_t)zb->zb_object,
1579		    (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid),
1580		    blkbuf);
1581	}
1582
1583	return (0);
1584}
1585
1586static int
1587dump_block_stats(spa_t *spa)
1588{
1589	zdb_cb_t zcb = { 0 };
1590	zdb_blkstats_t *zb, *tzb;
1591	uint64_t alloc, space, logalloc;
1592	vdev_t *rvd = spa->spa_root_vdev;
1593	int leaks = 0;
1594	int c, e;
1595
1596	if (!dump_opt['S']) {
1597		(void) printf("\nTraversing all blocks %s%s%s%s...\n",
1598		    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
1599		    dump_opt['c'] ? "checksums " : "",
1600		    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
1601		    !dump_opt['L'] ? "nothing leaked " : "");
1602	}
1603
1604	/*
1605	 * Load all space maps as SM_ALLOC maps, then traverse the pool
1606	 * claiming each block we discover.  If the pool is perfectly
1607	 * consistent, the space maps will be empty when we're done.
1608	 * Anything left over is a leak; any block we can't claim (because
1609	 * it's not part of any space map) is a double allocation,
1610	 * reference to a freed block, or an unclaimed log block.
1611	 */
1612	if (!dump_opt['L'])
1613		zdb_leak_init(spa);
1614
1615	/*
1616	 * If there's a deferred-free bplist, process that first.
1617	 */
1618	if (spa->spa_sync_bplist_obj != 0) {
1619		bplist_t *bpl = &spa->spa_sync_bplist;
1620		blkptr_t blk;
1621		uint64_t itor = 0;
1622
1623		VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1624		    spa->spa_sync_bplist_obj));
1625
1626		while (bplist_iterate(bpl, &itor, &blk) == 0) {
1627			if (dump_opt['b'] >= 4) {
1628				char blkbuf[BP_SPRINTF_LEN];
1629				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1630				(void) printf("[%s] %s\n",
1631				    "deferred free", blkbuf);
1632			}
1633			zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1634		}
1635
1636		bplist_close(bpl);
1637	}
1638
1639	zcb.zcb_haderrors |= traverse_pool(spa, zdb_blkptr_cb, &zcb);
1640
1641	if (zcb.zcb_haderrors && !dump_opt['S']) {
1642		(void) printf("\nError counts:\n\n");
1643		(void) printf("\t%5s  %s\n", "errno", "count");
1644		for (e = 0; e < 256; e++) {
1645			if (zcb.zcb_errors[e] != 0) {
1646				(void) printf("\t%5d  %llu\n",
1647				    e, (u_longlong_t)zcb.zcb_errors[e]);
1648			}
1649		}
1650	}
1651
1652	/*
1653	 * Report any leaked segments.
1654	 */
1655	if (!dump_opt['L'])
1656		zdb_leak_fini(spa);
1657
1658	/*
1659	 * If we're interested in printing out the blkptr signatures,
1660	 * return now as we don't print out anything else (including
1661	 * errors and leaks).
1662	 */
1663	if (dump_opt['S'])
1664		return (zcb.zcb_haderrors ? 3 : 0);
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		if (!dump_opt['L'])
1683			(void) printf("\n\tNo leaks (block sum matches space"
1684			    " maps exactly)\n");
1685	} else {
1686		(void) printf("block traversal size %llu != alloc %llu "
1687		    "(%s %lld)\n",
1688		    (u_longlong_t)tzb->zb_asize,
1689		    (u_longlong_t)alloc + logalloc,
1690		    (dump_opt['L']) ? "unreachable" : "leaked",
1691		    (longlong_t)(alloc + logalloc - tzb->zb_asize));
1692		leaks = 1;
1693	}
1694
1695	if (tzb->zb_count == 0)
1696		return (2);
1697
1698	(void) printf("\n");
1699	(void) printf("\tbp count:      %10llu\n",
1700	    (u_longlong_t)tzb->zb_count);
1701	(void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1702	    (u_longlong_t)tzb->zb_lsize,
1703	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1704	(void) printf("\tbp physical:   %10llu\t avg:"
1705	    " %6llu\tcompression: %6.2f\n",
1706	    (u_longlong_t)tzb->zb_psize,
1707	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1708	    (double)tzb->zb_lsize / tzb->zb_psize);
1709	(void) printf("\tbp allocated:  %10llu\t avg:"
1710	    " %6llu\tcompression: %6.2f\n",
1711	    (u_longlong_t)tzb->zb_asize,
1712	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1713	    (double)tzb->zb_lsize / tzb->zb_asize);
1714	(void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1715	    (u_longlong_t)alloc, 100.0 * alloc / space);
1716
1717	if (dump_opt['b'] >= 2) {
1718		int l, t, level;
1719		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1720		    "\t  avg\t comp\t%%Total\tType\n");
1721
1722		for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1723			char csize[6], lsize[6], psize[6], asize[6], avg[6];
1724			char *typename;
1725
1726			typename = t == DMU_OT_DEFERRED ? "deferred free" :
1727			    t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1728
1729			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1730				(void) printf("%6s\t%5s\t%5s\t%5s"
1731				    "\t%5s\t%5s\t%6s\t%s\n",
1732				    "-",
1733				    "-",
1734				    "-",
1735				    "-",
1736				    "-",
1737				    "-",
1738				    "-",
1739				    typename);
1740				continue;
1741			}
1742
1743			for (l = ZB_TOTAL - 1; l >= -1; l--) {
1744				level = (l == -1 ? ZB_TOTAL : l);
1745				zb = &zcb.zcb_type[level][t];
1746
1747				if (zb->zb_asize == 0)
1748					continue;
1749
1750				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1751					continue;
1752
1753				if (level == 0 && zb->zb_asize ==
1754				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1755					continue;
1756
1757				nicenum(zb->zb_count, csize);
1758				nicenum(zb->zb_lsize, lsize);
1759				nicenum(zb->zb_psize, psize);
1760				nicenum(zb->zb_asize, asize);
1761				nicenum(zb->zb_asize / zb->zb_count, avg);
1762
1763				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1764				    "\t%5.2f\t%6.2f\t",
1765				    csize, lsize, psize, asize, avg,
1766				    (double)zb->zb_lsize / zb->zb_psize,
1767				    100.0 * zb->zb_asize / tzb->zb_asize);
1768
1769				if (level == ZB_TOTAL)
1770					(void) printf("%s\n", typename);
1771				else
1772					(void) printf("    L%d %s\n",
1773					    level, typename);
1774			}
1775		}
1776	}
1777
1778	(void) printf("\n");
1779
1780	if (leaks)
1781		return (2);
1782
1783	if (zcb.zcb_haderrors)
1784		return (3);
1785
1786	return (0);
1787}
1788
1789static void
1790dump_zpool(spa_t *spa)
1791{
1792	dsl_pool_t *dp = spa_get_dsl(spa);
1793	int rc = 0;
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_name(spa), dump_one_dir, NULL,
1807		    DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1808	}
1809
1810	if (dump_opt['b'] || dump_opt['c'] || dump_opt['S'])
1811		rc = dump_block_stats(spa);
1812
1813	if (dump_opt['s'])
1814		show_pool_stats(spa);
1815
1816	if (rc != 0)
1817		exit(rc);
1818}
1819
1820#define	ZDB_FLAG_CHECKSUM	0x0001
1821#define	ZDB_FLAG_DECOMPRESS	0x0002
1822#define	ZDB_FLAG_BSWAP		0x0004
1823#define	ZDB_FLAG_GBH		0x0008
1824#define	ZDB_FLAG_INDIRECT	0x0010
1825#define	ZDB_FLAG_PHYS		0x0020
1826#define	ZDB_FLAG_RAW		0x0040
1827#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
1828
1829int flagbits[256];
1830
1831static void
1832zdb_print_blkptr(blkptr_t *bp, int flags)
1833{
1834	dva_t *dva = bp->blk_dva;
1835	int d;
1836
1837	if (flags & ZDB_FLAG_BSWAP)
1838		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1839	/*
1840	 * Super-ick warning:  This code is also duplicated in
1841	 * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1842	 * replication, too.
1843	 */
1844	for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1845		(void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1846		    (longlong_t)DVA_GET_VDEV(&dva[d]),
1847		    (longlong_t)DVA_GET_OFFSET(&dva[d]));
1848		(void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1849		    "ASIZE: %llx\n", d,
1850		    DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1851		    (longlong_t)DVA_GET_GRID(&dva[d]),
1852		    (longlong_t)DVA_GET_ASIZE(&dva[d]));
1853		(void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1854		    (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1855		    (longlong_t)DVA_GET_OFFSET(&dva[d]),
1856		    (longlong_t)BP_GET_PSIZE(bp),
1857		    BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1858		    !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1859		    "d" : "",
1860		    DVA_GET_GANG(&dva[d]) ? "g" : "",
1861		    BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1862	}
1863	(void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1864	    (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1865	(void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1866	    BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1867	    dmu_ot[BP_GET_TYPE(bp)].ot_name);
1868	(void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1869	    (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1870	    (u_longlong_t)bp->blk_fill);
1871	(void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1872	    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1873	    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1874	(void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1875	    (u_longlong_t)bp->blk_cksum.zc_word[0],
1876	    (u_longlong_t)bp->blk_cksum.zc_word[1],
1877	    (u_longlong_t)bp->blk_cksum.zc_word[2],
1878	    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1879}
1880
1881static void
1882zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1883{
1884	int i;
1885
1886	for (i = 0; i < nbps; i++)
1887		zdb_print_blkptr(&bp[i], flags);
1888}
1889
1890static void
1891zdb_dump_gbh(void *buf, int flags)
1892{
1893	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1894}
1895
1896static void
1897zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1898{
1899	if (flags & ZDB_FLAG_BSWAP)
1900		byteswap_uint64_array(buf, size);
1901	(void) write(2, buf, size);
1902}
1903
1904static void
1905zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1906{
1907	uint64_t *d = (uint64_t *)buf;
1908	int nwords = size / sizeof (uint64_t);
1909	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1910	int i, j;
1911	char *hdr, *c;
1912
1913
1914	if (do_bswap)
1915		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1916	else
1917		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1918
1919	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1920
1921	for (i = 0; i < nwords; i += 2) {
1922		(void) printf("%06llx:  %016llx  %016llx  ",
1923		    (u_longlong_t)(i * sizeof (uint64_t)),
1924		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1925		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1926
1927		c = (char *)&d[i];
1928		for (j = 0; j < 2 * sizeof (uint64_t); j++)
1929			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
1930		(void) printf("\n");
1931	}
1932}
1933
1934/*
1935 * There are two acceptable formats:
1936 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
1937 *	child[.child]*    - For example: 0.1.1
1938 *
1939 * The second form can be used to specify arbitrary vdevs anywhere
1940 * in the heirarchy.  For example, in a pool with a mirror of
1941 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1942 */
1943static vdev_t *
1944zdb_vdev_lookup(vdev_t *vdev, char *path)
1945{
1946	char *s, *p, *q;
1947	int i;
1948
1949	if (vdev == NULL)
1950		return (NULL);
1951
1952	/* First, assume the x.x.x.x format */
1953	i = (int)strtoul(path, &s, 10);
1954	if (s == path || (s && *s != '.' && *s != '\0'))
1955		goto name;
1956	if (i < 0 || i >= vdev->vdev_children)
1957		return (NULL);
1958
1959	vdev = vdev->vdev_child[i];
1960	if (*s == '\0')
1961		return (vdev);
1962	return (zdb_vdev_lookup(vdev, s+1));
1963
1964name:
1965	for (i = 0; i < vdev->vdev_children; i++) {
1966		vdev_t *vc = vdev->vdev_child[i];
1967
1968		if (vc->vdev_path == NULL) {
1969			vc = zdb_vdev_lookup(vc, path);
1970			if (vc == NULL)
1971				continue;
1972			else
1973				return (vc);
1974		}
1975
1976		p = strrchr(vc->vdev_path, '/');
1977		p = p ? p + 1 : vc->vdev_path;
1978		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
1979
1980		if (strcmp(vc->vdev_path, path) == 0)
1981			return (vc);
1982		if (strcmp(p, path) == 0)
1983			return (vc);
1984		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
1985			return (vc);
1986	}
1987
1988	return (NULL);
1989}
1990
1991/*
1992 * Read a block from a pool and print it out.  The syntax of the
1993 * block descriptor is:
1994 *
1995 *	pool:vdev_specifier:offset:size[:flags]
1996 *
1997 *	pool           - The name of the pool you wish to read from
1998 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
1999 *	offset         - offset, in hex, in bytes
2000 *	size           - Amount of data to read, in hex, in bytes
2001 *	flags          - A string of characters specifying options
2002 *		 b: Decode a blkptr at given offset within block
2003 *		*c: Calculate and display checksums
2004 *		*d: Decompress data before dumping
2005 *		 e: Byteswap data before dumping
2006 *		*g: Display data as a gang block header
2007 *		*i: Display as an indirect block
2008 *		 p: Do I/O to physical offset
2009 *		 r: Dump raw data to stdout
2010 *
2011 *              * = not yet implemented
2012 */
2013static void
2014zdb_read_block(char *thing, spa_t **spap)
2015{
2016	spa_t *spa = *spap;
2017	int flags = 0;
2018	uint64_t offset = 0, size = 0, blkptr_offset = 0;
2019	zio_t *zio;
2020	vdev_t *vd;
2021	void *buf;
2022	char *s, *p, *dup, *pool, *vdev, *flagstr;
2023	int i, error, zio_flags;
2024
2025	dup = strdup(thing);
2026	s = strtok(dup, ":");
2027	pool = s ? s : "";
2028	s = strtok(NULL, ":");
2029	vdev = s ? s : "";
2030	s = strtok(NULL, ":");
2031	offset = strtoull(s ? s : "", NULL, 16);
2032	s = strtok(NULL, ":");
2033	size = strtoull(s ? s : "", NULL, 16);
2034	s = strtok(NULL, ":");
2035	flagstr = s ? s : "";
2036
2037	s = NULL;
2038	if (size == 0)
2039		s = "size must not be zero";
2040	if (!IS_P2ALIGNED(size, DEV_BSIZE))
2041		s = "size must be a multiple of sector size";
2042	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2043		s = "offset must be a multiple of sector size";
2044	if (s) {
2045		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2046		free(dup);
2047		return;
2048	}
2049
2050	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2051		for (i = 0; flagstr[i]; i++) {
2052			int bit = flagbits[(uchar_t)flagstr[i]];
2053
2054			if (bit == 0) {
2055				(void) printf("***Invalid flag: %c\n",
2056				    flagstr[i]);
2057				continue;
2058			}
2059			flags |= bit;
2060
2061			/* If it's not something with an argument, keep going */
2062			if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2063			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
2064				continue;
2065
2066			p = &flagstr[i + 1];
2067			if (bit == ZDB_FLAG_PRINT_BLKPTR)
2068				blkptr_offset = strtoull(p, &p, 16);
2069			if (*p != ':' && *p != '\0') {
2070				(void) printf("***Invalid flag arg: '%s'\n", s);
2071				free(dup);
2072				return;
2073			}
2074		}
2075	}
2076
2077	if (spa == NULL || strcmp(spa_name(spa), pool) != 0) {
2078		if (spa)
2079			spa_close(spa, (void *)zdb_read_block);
2080		error = spa_open(pool, spap, (void *)zdb_read_block);
2081		if (error)
2082			fatal("Failed to open pool '%s': %s",
2083			    pool, strerror(error));
2084		spa = *spap;
2085	}
2086
2087	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2088	if (vd == NULL) {
2089		(void) printf("***Invalid vdev: %s\n", vdev);
2090		free(dup);
2091		return;
2092	} else {
2093		if (vd->vdev_path)
2094			(void) printf("Found vdev: %s\n", vd->vdev_path);
2095		else
2096			(void) printf("Found vdev type: %s\n",
2097			    vd->vdev_ops->vdev_op_type);
2098	}
2099
2100	buf = umem_alloc(size, UMEM_NOFAIL);
2101
2102	zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2103	    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY;
2104
2105	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2106	zio = zio_root(spa, NULL, NULL, 0);
2107	/* XXX todo - cons up a BP so RAID-Z will be happy */
2108	zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2109	    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2110	error = zio_wait(zio);
2111	spa_config_exit(spa, SCL_STATE, FTAG);
2112
2113	if (error) {
2114		(void) printf("Read of %s failed, error: %d\n", thing, error);
2115		goto out;
2116	}
2117
2118	if (flags & ZDB_FLAG_PRINT_BLKPTR)
2119		zdb_print_blkptr((blkptr_t *)(void *)
2120		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2121	else if (flags & ZDB_FLAG_RAW)
2122		zdb_dump_block_raw(buf, size, flags);
2123	else if (flags & ZDB_FLAG_INDIRECT)
2124		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2125		    flags);
2126	else if (flags & ZDB_FLAG_GBH)
2127		zdb_dump_gbh(buf, flags);
2128	else
2129		zdb_dump_block(thing, buf, size, flags);
2130
2131out:
2132	umem_free(buf, size);
2133	free(dup);
2134}
2135
2136static boolean_t
2137nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2138{
2139	char *s;
2140
2141	if (nvlist_lookup_string(config, name, &s) != 0)
2142		return (B_FALSE);
2143
2144	return (strcmp(s, tgt) == 0);
2145}
2146
2147static boolean_t
2148nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2149{
2150	uint64_t val;
2151
2152	if (nvlist_lookup_uint64(config, name, &val) != 0)
2153		return (B_FALSE);
2154
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{
2230	nvlist_t *pools;
2231	int error = ENOENT;
2232	nvlist_t *match = NULL;
2233
2234	if (vdev_dir != NULL)
2235		pools = zpool_find_import_activeok(g_zfs, 1, &vdev_dir);
2236	else
2237		pools = zpool_find_import_activeok(g_zfs, 0, NULL);
2238
2239	if (pools != NULL) {
2240		nvpair_t *elem = NULL;
2241
2242		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2243			verify(nvpair_value_nvlist(elem, configp) == 0);
2244			if (pool_match(*configp, pool_id)) {
2245				if (match != NULL) {
2246					(void) fatal(
2247					    "More than one matching pool - "
2248					    "specify guid/devid/device path.");
2249				} else {
2250					match = *configp;
2251					error = 0;
2252				}
2253			}
2254		}
2255	}
2256
2257	*configp = error ? NULL : match;
2258
2259	return (error);
2260}
2261
2262int
2263main(int argc, char **argv)
2264{
2265	int i, c;
2266	struct rlimit rl = { 1024, 1024 };
2267	spa_t *spa;
2268	objset_t *os = NULL;
2269	char *endstr;
2270	int dump_all = 1;
2271	int verbose = 0;
2272	int error;
2273	int exported = 0;
2274	char *vdev_dir = NULL;
2275
2276	(void) setrlimit(RLIMIT_NOFILE, &rl);
2277	(void) enable_extended_FILE_stdio(-1, -1);
2278
2279	dprintf_setup(&argc, argv);
2280
2281	while ((c = getopt(argc, argv, "udibcsvCLS:U:lRep:t:")) != -1) {
2282		switch (c) {
2283		case 'u':
2284		case 'd':
2285		case 'i':
2286		case 'b':
2287		case 'c':
2288		case 's':
2289		case 'C':
2290		case 'l':
2291		case 'R':
2292			dump_opt[c]++;
2293			dump_all = 0;
2294			break;
2295		case 'L':
2296			dump_opt[c]++;
2297			break;
2298		case 'v':
2299			verbose++;
2300			break;
2301		case 'U':
2302			spa_config_path = optarg;
2303			break;
2304		case 'e':
2305			exported = 1;
2306			break;
2307		case 'p':
2308			vdev_dir = optarg;
2309			break;
2310		case 'S':
2311			dump_opt[c]++;
2312			dump_all = 0;
2313			zdb_sig_user_data = (strncmp(optarg, "user:", 5) == 0);
2314			if (!zdb_sig_user_data && strncmp(optarg, "all:", 4))
2315				usage();
2316			endstr = strchr(optarg, ':') + 1;
2317			if (strcmp(endstr, "fletcher2") == 0)
2318				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2319			else if (strcmp(endstr, "fletcher4") == 0)
2320				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_4;
2321			else if (strcmp(endstr, "sha256") == 0)
2322				zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
2323			else if (strcmp(endstr, "all") == 0)
2324				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2325			else
2326				usage();
2327			break;
2328		case 't':
2329			ub_max_txg = strtoull(optarg, NULL, 0);
2330			if (ub_max_txg < TXG_INITIAL) {
2331				(void) fprintf(stderr, "incorrect txg "
2332				    "specified: %s\n", optarg);
2333				usage();
2334			}
2335			break;
2336		default:
2337			usage();
2338			break;
2339		}
2340	}
2341
2342	if (vdev_dir != NULL && exported == 0) {
2343		(void) fprintf(stderr, "-p option requires use of -e\n");
2344		usage();
2345	}
2346
2347	kernel_init(FREAD);
2348	g_zfs = libzfs_init();
2349	ASSERT(g_zfs != NULL);
2350
2351	for (c = 0; c < 256; c++) {
2352		if (dump_all && c != 'l' && c != 'R')
2353			dump_opt[c] = 1;
2354		if (dump_opt[c])
2355			dump_opt[c] += verbose;
2356	}
2357
2358	argc -= optind;
2359	argv += optind;
2360
2361	if (argc < 1) {
2362		if (dump_opt['C']) {
2363			dump_cachefile(spa_config_path);
2364			return (0);
2365		}
2366		usage();
2367	}
2368
2369	if (dump_opt['l']) {
2370		dump_label(argv[0]);
2371		return (0);
2372	}
2373
2374	if (dump_opt['R']) {
2375		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2376		flagbits['c'] = ZDB_FLAG_CHECKSUM;
2377		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2378		flagbits['e'] = ZDB_FLAG_BSWAP;
2379		flagbits['g'] = ZDB_FLAG_GBH;
2380		flagbits['i'] = ZDB_FLAG_INDIRECT;
2381		flagbits['p'] = ZDB_FLAG_PHYS;
2382		flagbits['r'] = ZDB_FLAG_RAW;
2383
2384		spa = NULL;
2385		while (argv[0]) {
2386			zdb_read_block(argv[0], &spa);
2387			argv++;
2388			argc--;
2389		}
2390		if (spa)
2391			spa_close(spa, (void *)zdb_read_block);
2392		return (0);
2393	}
2394
2395	if (dump_opt['C'])
2396		dump_config(argv[0]);
2397
2398	error = 0;
2399	if (exported) {
2400		/*
2401		 * Check to see if the name refers to an exported zpool
2402		 */
2403		char *slash;
2404		nvlist_t *exported_conf = NULL;
2405
2406		if ((slash = strchr(argv[0], '/')) != NULL)
2407			*slash = '\0';
2408
2409		error = find_exported_zpool(argv[0], &exported_conf, vdev_dir);
2410		if (error == 0) {
2411			nvlist_t *nvl = NULL;
2412
2413			if (vdev_dir != NULL) {
2414				if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2415					error = ENOMEM;
2416				else if (nvlist_add_string(nvl,
2417				    zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2418				    vdev_dir) != 0)
2419					error = ENOMEM;
2420			}
2421
2422			if (error == 0)
2423				error = spa_import_verbatim(argv[0],
2424				    exported_conf, nvl);
2425
2426			nvlist_free(nvl);
2427		}
2428
2429		if (slash != NULL)
2430			*slash = '/';
2431	}
2432
2433	if (error == 0) {
2434		if (strchr(argv[0], '/') != NULL) {
2435			error = dmu_objset_open(argv[0], DMU_OST_ANY,
2436			    DS_MODE_USER | DS_MODE_READONLY, &os);
2437		} else {
2438			error = spa_open(argv[0], &spa, FTAG);
2439		}
2440	}
2441
2442	if (error)
2443		fatal("can't open %s: %s", argv[0], strerror(error));
2444
2445	argv++;
2446	if (--argc > 0) {
2447		zopt_objects = argc;
2448		zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2449		for (i = 0; i < zopt_objects; i++) {
2450			errno = 0;
2451			zopt_object[i] = strtoull(argv[i], NULL, 0);
2452			if (zopt_object[i] == 0 && errno != 0)
2453				fatal("bad object number %s: %s",
2454				    argv[i], strerror(errno));
2455		}
2456	}
2457
2458	if (os != NULL) {
2459		dump_dir(os);
2460		dmu_objset_close(os);
2461	} else {
2462		dump_zpool(spa);
2463		spa_close(spa, FTAG);
2464	}
2465
2466	fuid_table_destroy();
2467
2468	libzfs_fini(g_zfs);
2469	kernel_fini();
2470
2471	return (0);
2472}
2473