zdb.c revision ccba08015a17f88186762dd6d9f91195adb387e8
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		(void) zfs_fuid_table_load(os, fuid_obj,
926		    &idx_tree, &domain_tree);
927		fuid_table_loaded = B_TRUE;
928	}
929
930	print_idstr(zp->zp_uid, "uid");
931	print_idstr(zp->zp_gid, "gid");
932}
933
934/*ARGSUSED*/
935static void
936dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
937{
938	znode_phys_t *zp = data;
939	time_t z_crtime, z_atime, z_mtime, z_ctime;
940	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
941	int error;
942
943	ASSERT(size >= sizeof (znode_phys_t));
944
945	error = zfs_obj_to_path(os, object, path, sizeof (path));
946	if (error != 0) {
947		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
948		    (u_longlong_t)object);
949	}
950
951	if (dump_opt['d'] < 3) {
952		(void) printf("\t%s\n", path);
953		return;
954	}
955
956	z_crtime = (time_t)zp->zp_crtime[0];
957	z_atime = (time_t)zp->zp_atime[0];
958	z_mtime = (time_t)zp->zp_mtime[0];
959	z_ctime = (time_t)zp->zp_ctime[0];
960
961	(void) printf("\tpath	%s\n", path);
962	dump_uidgid(os, zp);
963	(void) printf("\tatime	%s", ctime(&z_atime));
964	(void) printf("\tmtime	%s", ctime(&z_mtime));
965	(void) printf("\tctime	%s", ctime(&z_ctime));
966	(void) printf("\tcrtime	%s", ctime(&z_crtime));
967	(void) printf("\tgen	%llu\n", (u_longlong_t)zp->zp_gen);
968	(void) printf("\tmode	%llo\n", (u_longlong_t)zp->zp_mode);
969	(void) printf("\tsize	%llu\n", (u_longlong_t)zp->zp_size);
970	(void) printf("\tparent	%llu\n", (u_longlong_t)zp->zp_parent);
971	(void) printf("\tlinks	%llu\n", (u_longlong_t)zp->zp_links);
972	(void) printf("\txattr	%llu\n", (u_longlong_t)zp->zp_xattr);
973	(void) printf("\trdev	0x%016llx\n", (u_longlong_t)zp->zp_rdev);
974}
975
976/*ARGSUSED*/
977static void
978dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
979{
980}
981
982/*ARGSUSED*/
983static void
984dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
985{
986}
987
988static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
989	dump_none,		/* unallocated			*/
990	dump_zap,		/* object directory		*/
991	dump_uint64,		/* object array			*/
992	dump_none,		/* packed nvlist		*/
993	dump_packed_nvlist,	/* packed nvlist size		*/
994	dump_none,		/* bplist			*/
995	dump_none,		/* bplist header		*/
996	dump_none,		/* SPA space map header		*/
997	dump_none,		/* SPA space map		*/
998	dump_none,		/* ZIL intent log		*/
999	dump_dnode,		/* DMU dnode			*/
1000	dump_dmu_objset,	/* DMU objset			*/
1001	dump_dsl_dir,		/* DSL directory		*/
1002	dump_zap,		/* DSL directory child map	*/
1003	dump_zap,		/* DSL dataset snap map		*/
1004	dump_zap,		/* DSL props			*/
1005	dump_dsl_dataset,	/* DSL dataset			*/
1006	dump_znode,		/* ZFS znode			*/
1007	dump_acl,		/* ZFS V0 ACL			*/
1008	dump_uint8,		/* ZFS plain file		*/
1009	dump_zpldir,		/* ZFS directory		*/
1010	dump_zap,		/* ZFS master node		*/
1011	dump_zap,		/* ZFS delete queue		*/
1012	dump_uint8,		/* zvol object			*/
1013	dump_zap,		/* zvol prop			*/
1014	dump_uint8,		/* other uint8[]		*/
1015	dump_uint64,		/* other uint64[]		*/
1016	dump_zap,		/* other ZAP			*/
1017	dump_zap,		/* persistent error log		*/
1018	dump_uint8,		/* SPA history			*/
1019	dump_uint64,		/* SPA history offsets		*/
1020	dump_zap,		/* Pool properties		*/
1021	dump_zap,		/* DSL permissions		*/
1022	dump_acl,		/* ZFS ACL			*/
1023	dump_uint8,		/* ZFS SYSACL			*/
1024	dump_none,		/* FUID nvlist			*/
1025	dump_packed_nvlist,	/* FUID nvlist size		*/
1026	dump_zap,		/* DSL dataset next clones	*/
1027	dump_zap,		/* DSL scrub queue		*/
1028};
1029
1030static void
1031dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1032{
1033	dmu_buf_t *db = NULL;
1034	dmu_object_info_t doi;
1035	dnode_t *dn;
1036	void *bonus = NULL;
1037	size_t bsize = 0;
1038	char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1039	char aux[50];
1040	int error;
1041
1042	if (*print_header) {
1043		(void) printf("\n    Object  lvl   iblk   dblk  lsize"
1044		    "  asize  type\n");
1045		*print_header = 0;
1046	}
1047
1048	if (object == 0) {
1049		dn = os->os->os_meta_dnode;
1050	} else {
1051		error = dmu_bonus_hold(os, object, FTAG, &db);
1052		if (error)
1053			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1054			    object, error);
1055		bonus = db->db_data;
1056		bsize = db->db_size;
1057		dn = ((dmu_buf_impl_t *)db)->db_dnode;
1058	}
1059	dmu_object_info_from_dnode(dn, &doi);
1060
1061	nicenum(doi.doi_metadata_block_size, iblk);
1062	nicenum(doi.doi_data_block_size, dblk);
1063	nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1064	    lsize);
1065	nicenum(doi.doi_physical_blks << 9, asize);
1066	nicenum(doi.doi_bonus_size, bonus_size);
1067
1068	aux[0] = '\0';
1069
1070	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1071		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1072		    zio_checksum_table[doi.doi_checksum].ci_name);
1073	}
1074
1075	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1076		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1077		    zio_compress_table[doi.doi_compress].ci_name);
1078	}
1079
1080	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1081	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1082	    asize, dmu_ot[doi.doi_type].ot_name, aux);
1083
1084	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1085		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1086		    "", "", "", "", bonus_size, "bonus",
1087		    dmu_ot[doi.doi_bonus_type].ot_name);
1088	}
1089
1090	if (verbosity >= 4) {
1091		object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1092		object_viewer[doi.doi_type](os, object, NULL, 0);
1093		*print_header = 1;
1094	}
1095
1096	if (verbosity >= 5)
1097		dump_indirect(dn);
1098
1099	if (verbosity >= 5) {
1100		/*
1101		 * Report the list of segments that comprise the object.
1102		 */
1103		uint64_t start = 0;
1104		uint64_t end;
1105		uint64_t blkfill = 1;
1106		int minlvl = 1;
1107
1108		if (dn->dn_type == DMU_OT_DNODE) {
1109			minlvl = 0;
1110			blkfill = DNODES_PER_BLOCK;
1111		}
1112
1113		for (;;) {
1114			error = dnode_next_offset(dn,
1115			    0, &start, minlvl, blkfill, 0);
1116			if (error)
1117				break;
1118			end = start;
1119			error = dnode_next_offset(dn,
1120			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1121			nicenum(end - start, segsize);
1122			(void) printf("\t\tsegment [%016llx, %016llx)"
1123			    " size %5s\n", (u_longlong_t)start,
1124			    (u_longlong_t)end, segsize);
1125			if (error)
1126				break;
1127			start = end;
1128		}
1129	}
1130
1131	if (db != NULL)
1132		dmu_buf_rele(db, FTAG);
1133}
1134
1135static char *objset_types[DMU_OST_NUMTYPES] = {
1136	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1137
1138static void
1139dump_dir(objset_t *os)
1140{
1141	dmu_objset_stats_t dds;
1142	uint64_t object, object_count;
1143	uint64_t refdbytes, usedobjs, scratch;
1144	char numbuf[8];
1145	char blkbuf[BP_SPRINTF_LEN];
1146	char osname[MAXNAMELEN];
1147	char *type = "UNKNOWN";
1148	int verbosity = dump_opt['d'];
1149	int print_header = 1;
1150	int i, error;
1151
1152	dmu_objset_fast_stat(os, &dds);
1153
1154	if (dds.dds_type < DMU_OST_NUMTYPES)
1155		type = objset_types[dds.dds_type];
1156
1157	if (dds.dds_type == DMU_OST_META) {
1158		dds.dds_creation_txg = TXG_INITIAL;
1159		usedobjs = os->os->os_rootbp->blk_fill;
1160		refdbytes = os->os->os_spa->spa_dsl_pool->
1161		    dp_mos_dir->dd_phys->dd_used_bytes;
1162	} else {
1163		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1164	}
1165
1166	ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1167
1168	nicenum(refdbytes, numbuf);
1169
1170	if (verbosity >= 4) {
1171		(void) strcpy(blkbuf, ", rootbp ");
1172		sprintf_blkptr(blkbuf + strlen(blkbuf),
1173		    BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1174	} else {
1175		blkbuf[0] = '\0';
1176	}
1177
1178	dmu_objset_name(os, osname);
1179
1180	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1181	    "%s, %llu objects%s\n",
1182	    osname, type, (u_longlong_t)dmu_objset_id(os),
1183	    (u_longlong_t)dds.dds_creation_txg,
1184	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1185
1186	dump_intent_log(dmu_objset_zil(os));
1187
1188	if (dmu_objset_ds(os) != NULL)
1189		dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1190		    dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1191
1192	if (verbosity < 2)
1193		return;
1194
1195	if (os->os->os_rootbp->blk_birth == 0)
1196		return;
1197
1198	if (zopt_objects != 0) {
1199		for (i = 0; i < zopt_objects; i++)
1200			dump_object(os, zopt_object[i], verbosity,
1201			    &print_header);
1202		(void) printf("\n");
1203		return;
1204	}
1205
1206	dump_object(os, 0, verbosity, &print_header);
1207	object_count = 1;
1208
1209	object = 0;
1210	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1211		dump_object(os, object, verbosity, &print_header);
1212		object_count++;
1213	}
1214
1215	ASSERT3U(object_count, ==, usedobjs);
1216
1217	(void) printf("\n");
1218
1219	if (error != ESRCH) {
1220		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1221		abort();
1222	}
1223}
1224
1225static void
1226dump_uberblock(uberblock_t *ub)
1227{
1228	time_t timestamp = ub->ub_timestamp;
1229
1230	(void) printf("Uberblock\n\n");
1231	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1232	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1233	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1234	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1235	(void) printf("\ttimestamp = %llu UTC = %s",
1236	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1237	if (dump_opt['u'] >= 3) {
1238		char blkbuf[BP_SPRINTF_LEN];
1239		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1240		(void) printf("\trootbp = %s\n", blkbuf);
1241	}
1242	(void) printf("\n");
1243}
1244
1245static void
1246dump_config(const char *pool)
1247{
1248	spa_t *spa = NULL;
1249
1250	mutex_enter(&spa_namespace_lock);
1251	while ((spa = spa_next(spa)) != NULL) {
1252		if (pool == NULL)
1253			(void) printf("%s\n", spa_name(spa));
1254		if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1255			dump_nvlist(spa->spa_config, 4);
1256	}
1257	mutex_exit(&spa_namespace_lock);
1258}
1259
1260static void
1261dump_cachefile(const char *cachefile)
1262{
1263	int fd;
1264	struct stat64 statbuf;
1265	char *buf;
1266	nvlist_t *config;
1267
1268	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1269		(void) printf("cannot open '%s': %s\n", cachefile,
1270		    strerror(errno));
1271		exit(1);
1272	}
1273
1274	if (fstat64(fd, &statbuf) != 0) {
1275		(void) printf("failed to stat '%s': %s\n", cachefile,
1276		    strerror(errno));
1277		exit(1);
1278	}
1279
1280	if ((buf = malloc(statbuf.st_size)) == NULL) {
1281		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1282		    (u_longlong_t)statbuf.st_size);
1283		exit(1);
1284	}
1285
1286	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1287		(void) fprintf(stderr, "failed to read %llu bytes\n",
1288		    (u_longlong_t)statbuf.st_size);
1289		exit(1);
1290	}
1291
1292	(void) close(fd);
1293
1294	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1295		(void) fprintf(stderr, "failed to unpack nvlist\n");
1296		exit(1);
1297	}
1298
1299	free(buf);
1300
1301	dump_nvlist(config, 0);
1302
1303	nvlist_free(config);
1304}
1305
1306static void
1307dump_label(const char *dev)
1308{
1309	int fd;
1310	vdev_label_t label;
1311	char *buf = label.vl_vdev_phys.vp_nvlist;
1312	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1313	struct stat64 statbuf;
1314	uint64_t psize;
1315	int l;
1316
1317	if ((fd = open64(dev, O_RDONLY)) < 0) {
1318		(void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1319		exit(1);
1320	}
1321
1322	if (fstat64(fd, &statbuf) != 0) {
1323		(void) printf("failed to stat '%s': %s\n", dev,
1324		    strerror(errno));
1325		exit(1);
1326	}
1327
1328	psize = statbuf.st_size;
1329	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1330
1331	for (l = 0; l < VDEV_LABELS; l++) {
1332
1333		nvlist_t *config = NULL;
1334
1335		(void) printf("--------------------------------------------\n");
1336		(void) printf("LABEL %d\n", l);
1337		(void) printf("--------------------------------------------\n");
1338
1339		if (pread64(fd, &label, sizeof (label),
1340		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1341			(void) printf("failed to read label %d\n", l);
1342			continue;
1343		}
1344
1345		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1346			(void) printf("failed to unpack label %d\n", l);
1347			continue;
1348		}
1349		dump_nvlist(config, 4);
1350		nvlist_free(config);
1351	}
1352}
1353
1354/*ARGSUSED*/
1355static int
1356dump_one_dir(char *dsname, void *arg)
1357{
1358	int error;
1359	objset_t *os;
1360
1361	error = dmu_objset_open(dsname, DMU_OST_ANY,
1362	    DS_MODE_USER | DS_MODE_READONLY, &os);
1363	if (error) {
1364		(void) printf("Could not open %s\n", dsname);
1365		return (0);
1366	}
1367	dump_dir(os);
1368	dmu_objset_close(os);
1369	fuid_table_destroy();
1370	return (0);
1371}
1372
1373static void
1374zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1375{
1376	vdev_t *vd = sm->sm_ppd;
1377
1378	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1379	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
1380}
1381
1382/* ARGSUSED */
1383static void
1384zdb_space_map_load(space_map_t *sm)
1385{
1386}
1387
1388static void
1389zdb_space_map_unload(space_map_t *sm)
1390{
1391	space_map_vacate(sm, zdb_leak, sm);
1392}
1393
1394/* ARGSUSED */
1395static void
1396zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
1397{
1398}
1399
1400static space_map_ops_t zdb_space_map_ops = {
1401	zdb_space_map_load,
1402	zdb_space_map_unload,
1403	NULL,	/* alloc */
1404	zdb_space_map_claim,
1405	NULL	/* free */
1406};
1407
1408static void
1409zdb_leak_init(spa_t *spa)
1410{
1411	vdev_t *rvd = spa->spa_root_vdev;
1412
1413	for (int c = 0; c < rvd->vdev_children; c++) {
1414		vdev_t *vd = rvd->vdev_child[c];
1415		for (int m = 0; m < vd->vdev_ms_count; m++) {
1416			metaslab_t *msp = vd->vdev_ms[m];
1417			mutex_enter(&msp->ms_lock);
1418			VERIFY(space_map_load(&msp->ms_map, &zdb_space_map_ops,
1419			    SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset) == 0);
1420			msp->ms_map.sm_ppd = vd;
1421			mutex_exit(&msp->ms_lock);
1422		}
1423	}
1424}
1425
1426static void
1427zdb_leak_fini(spa_t *spa)
1428{
1429	vdev_t *rvd = spa->spa_root_vdev;
1430
1431	for (int c = 0; c < rvd->vdev_children; c++) {
1432		vdev_t *vd = rvd->vdev_child[c];
1433		for (int m = 0; m < vd->vdev_ms_count; m++) {
1434			metaslab_t *msp = vd->vdev_ms[m];
1435			mutex_enter(&msp->ms_lock);
1436			space_map_unload(&msp->ms_map);
1437			mutex_exit(&msp->ms_lock);
1438		}
1439	}
1440}
1441
1442/*
1443 * Verify that the sum of the sizes of all blocks in the pool adds up
1444 * to the SPA's sa_alloc total.
1445 */
1446typedef struct zdb_blkstats {
1447	uint64_t	zb_asize;
1448	uint64_t	zb_lsize;
1449	uint64_t	zb_psize;
1450	uint64_t	zb_count;
1451} zdb_blkstats_t;
1452
1453#define	DMU_OT_DEFERRED	DMU_OT_NONE
1454#define	DMU_OT_TOTAL	DMU_OT_NUMTYPES
1455
1456#define	ZB_TOTAL	DN_MAX_LEVELS
1457
1458typedef struct zdb_cb {
1459	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1460	uint64_t	zcb_errors[256];
1461	int		zcb_readfails;
1462	int		zcb_haderrors;
1463} zdb_cb_t;
1464
1465static void
1466zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, dmu_object_type_t type)
1467{
1468	for (int i = 0; i < 4; i++) {
1469		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1470		int t = (i & 1) ? type : DMU_OT_TOTAL;
1471		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1472
1473		zb->zb_asize += BP_GET_ASIZE(bp);
1474		zb->zb_lsize += BP_GET_LSIZE(bp);
1475		zb->zb_psize += BP_GET_PSIZE(bp);
1476		zb->zb_count++;
1477	}
1478
1479	if (dump_opt['S']) {
1480		boolean_t print_sig;
1481
1482		print_sig = !zdb_sig_user_data || (BP_GET_LEVEL(bp) == 0 &&
1483		    BP_GET_TYPE(bp) == DMU_OT_PLAIN_FILE_CONTENTS);
1484
1485		if (BP_GET_CHECKSUM(bp) < zdb_sig_cksumalg)
1486			print_sig = B_FALSE;
1487
1488		if (print_sig) {
1489			(void) printf("%llu\t%lld\t%lld\t%s\t%s\t%s\t"
1490			    "%llx:%llx:%llx:%llx\n",
1491			    (u_longlong_t)BP_GET_LEVEL(bp),
1492			    (longlong_t)BP_GET_PSIZE(bp),
1493			    (longlong_t)BP_GET_NDVAS(bp),
1494			    dmu_ot[BP_GET_TYPE(bp)].ot_name,
1495			    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1496			    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name,
1497			    (u_longlong_t)bp->blk_cksum.zc_word[0],
1498			    (u_longlong_t)bp->blk_cksum.zc_word[1],
1499			    (u_longlong_t)bp->blk_cksum.zc_word[2],
1500			    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1501		}
1502	}
1503
1504	if (!dump_opt['L'])
1505		VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
1506		    NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
1507}
1508
1509static int
1510zdb_blkptr_cb(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
1511    const dnode_phys_t *dnp, void *arg)
1512{
1513	zdb_cb_t *zcb = arg;
1514	char blkbuf[BP_SPRINTF_LEN];
1515
1516	if (bp == NULL)
1517		return (0);
1518
1519	zdb_count_block(spa, zcb, bp, BP_GET_TYPE(bp));
1520
1521	if (dump_opt['c'] || dump_opt['S']) {
1522		int ioerr, size;
1523		void *data;
1524
1525		size = BP_GET_LSIZE(bp);
1526		data = malloc(size);
1527		ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1528		    NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
1529		    ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB, zb));
1530		free(data);
1531
1532		/* We expect io errors on intent log */
1533		if (ioerr && BP_GET_TYPE(bp) != DMU_OT_INTENT_LOG) {
1534			zcb->zcb_haderrors = 1;
1535			zcb->zcb_errors[ioerr]++;
1536
1537			if (dump_opt['b'] >= 2)
1538				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1539			else
1540				blkbuf[0] = '\0';
1541
1542			if (!dump_opt['S']) {
1543				(void) printf("zdb_blkptr_cb: "
1544				    "Got error %d reading "
1545				    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
1546				    ioerr,
1547				    (u_longlong_t)zb->zb_objset,
1548				    (u_longlong_t)zb->zb_object,
1549				    (u_longlong_t)zb->zb_level,
1550				    (u_longlong_t)zb->zb_blkid,
1551				    blkbuf);
1552			}
1553		}
1554	}
1555
1556	zcb->zcb_readfails = 0;
1557
1558	if (dump_opt['b'] >= 4) {
1559		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1560		(void) printf("objset %llu object %llu offset 0x%llx %s\n",
1561		    (u_longlong_t)zb->zb_objset,
1562		    (u_longlong_t)zb->zb_object,
1563		    (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid),
1564		    blkbuf);
1565	}
1566
1567	return (0);
1568}
1569
1570static int
1571dump_block_stats(spa_t *spa)
1572{
1573	zdb_cb_t zcb = { 0 };
1574	zdb_blkstats_t *zb, *tzb;
1575	uint64_t alloc, space, logalloc;
1576	vdev_t *rvd = spa->spa_root_vdev;
1577	int leaks = 0;
1578	int c, e;
1579
1580	if (!dump_opt['S']) {
1581		(void) printf("\nTraversing all blocks %s%s%s%s...\n",
1582		    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
1583		    dump_opt['c'] ? "checksums " : "",
1584		    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
1585		    !dump_opt['L'] ? "nothing leaked " : "");
1586	}
1587
1588	/*
1589	 * Load all space maps as SM_ALLOC maps, then traverse the pool
1590	 * claiming each block we discover.  If the pool is perfectly
1591	 * consistent, the space maps will be empty when we're done.
1592	 * Anything left over is a leak; any block we can't claim (because
1593	 * it's not part of any space map) is a double allocation,
1594	 * reference to a freed block, or an unclaimed log block.
1595	 */
1596	if (!dump_opt['L'])
1597		zdb_leak_init(spa);
1598
1599	/*
1600	 * If there's a deferred-free bplist, process that first.
1601	 */
1602	if (spa->spa_sync_bplist_obj != 0) {
1603		bplist_t *bpl = &spa->spa_sync_bplist;
1604		blkptr_t blk;
1605		uint64_t itor = 0;
1606
1607		VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1608		    spa->spa_sync_bplist_obj));
1609
1610		while (bplist_iterate(bpl, &itor, &blk) == 0) {
1611			if (dump_opt['b'] >= 4) {
1612				char blkbuf[BP_SPRINTF_LEN];
1613				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1614				(void) printf("[%s] %s\n",
1615				    "deferred free", blkbuf);
1616			}
1617			zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1618		}
1619
1620		bplist_close(bpl);
1621	}
1622
1623	zcb.zcb_haderrors |= traverse_pool(spa, zdb_blkptr_cb, &zcb);
1624
1625	if (zcb.zcb_haderrors && !dump_opt['S']) {
1626		(void) printf("\nError counts:\n\n");
1627		(void) printf("\t%5s  %s\n", "errno", "count");
1628		for (e = 0; e < 256; e++) {
1629			if (zcb.zcb_errors[e] != 0) {
1630				(void) printf("\t%5d  %llu\n",
1631				    e, (u_longlong_t)zcb.zcb_errors[e]);
1632			}
1633		}
1634	}
1635
1636	/*
1637	 * Report any leaked segments.
1638	 */
1639	if (!dump_opt['L'])
1640		zdb_leak_fini(spa);
1641
1642	/*
1643	 * If we're interested in printing out the blkptr signatures,
1644	 * return now as we don't print out anything else (including
1645	 * errors and leaks).
1646	 */
1647	if (dump_opt['S'])
1648		return (zcb.zcb_haderrors ? 3 : 0);
1649
1650	alloc = spa_get_alloc(spa);
1651	space = spa_get_space(spa);
1652
1653	/*
1654	 * Log blocks allocated from a separate log device don't count
1655	 * as part of the normal pool space; factor them in here.
1656	 */
1657	logalloc = 0;
1658
1659	for (c = 0; c < rvd->vdev_children; c++)
1660		if (rvd->vdev_child[c]->vdev_islog)
1661			logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc;
1662
1663	tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
1664
1665	if (tzb->zb_asize == alloc + logalloc) {
1666		if (!dump_opt['L'])
1667			(void) printf("\n\tNo leaks (block sum matches space"
1668			    " maps exactly)\n");
1669	} else {
1670		(void) printf("block traversal size %llu != alloc %llu "
1671		    "(%s %lld)\n",
1672		    (u_longlong_t)tzb->zb_asize,
1673		    (u_longlong_t)alloc + logalloc,
1674		    (dump_opt['L']) ? "unreachable" : "leaked",
1675		    (longlong_t)(alloc + logalloc - tzb->zb_asize));
1676		leaks = 1;
1677	}
1678
1679	if (tzb->zb_count == 0)
1680		return (2);
1681
1682	(void) printf("\n");
1683	(void) printf("\tbp count:      %10llu\n",
1684	    (u_longlong_t)tzb->zb_count);
1685	(void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1686	    (u_longlong_t)tzb->zb_lsize,
1687	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1688	(void) printf("\tbp physical:   %10llu\t avg:"
1689	    " %6llu\tcompression: %6.2f\n",
1690	    (u_longlong_t)tzb->zb_psize,
1691	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1692	    (double)tzb->zb_lsize / tzb->zb_psize);
1693	(void) printf("\tbp allocated:  %10llu\t avg:"
1694	    " %6llu\tcompression: %6.2f\n",
1695	    (u_longlong_t)tzb->zb_asize,
1696	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1697	    (double)tzb->zb_lsize / tzb->zb_asize);
1698	(void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1699	    (u_longlong_t)alloc, 100.0 * alloc / space);
1700
1701	if (dump_opt['b'] >= 2) {
1702		int l, t, level;
1703		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1704		    "\t  avg\t comp\t%%Total\tType\n");
1705
1706		for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1707			char csize[6], lsize[6], psize[6], asize[6], avg[6];
1708			char *typename;
1709
1710			typename = t == DMU_OT_DEFERRED ? "deferred free" :
1711			    t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1712
1713			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1714				(void) printf("%6s\t%5s\t%5s\t%5s"
1715				    "\t%5s\t%5s\t%6s\t%s\n",
1716				    "-",
1717				    "-",
1718				    "-",
1719				    "-",
1720				    "-",
1721				    "-",
1722				    "-",
1723				    typename);
1724				continue;
1725			}
1726
1727			for (l = ZB_TOTAL - 1; l >= -1; l--) {
1728				level = (l == -1 ? ZB_TOTAL : l);
1729				zb = &zcb.zcb_type[level][t];
1730
1731				if (zb->zb_asize == 0)
1732					continue;
1733
1734				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1735					continue;
1736
1737				if (level == 0 && zb->zb_asize ==
1738				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1739					continue;
1740
1741				nicenum(zb->zb_count, csize);
1742				nicenum(zb->zb_lsize, lsize);
1743				nicenum(zb->zb_psize, psize);
1744				nicenum(zb->zb_asize, asize);
1745				nicenum(zb->zb_asize / zb->zb_count, avg);
1746
1747				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1748				    "\t%5.2f\t%6.2f\t",
1749				    csize, lsize, psize, asize, avg,
1750				    (double)zb->zb_lsize / zb->zb_psize,
1751				    100.0 * zb->zb_asize / tzb->zb_asize);
1752
1753				if (level == ZB_TOTAL)
1754					(void) printf("%s\n", typename);
1755				else
1756					(void) printf("    L%d %s\n",
1757					    level, typename);
1758			}
1759		}
1760	}
1761
1762	(void) printf("\n");
1763
1764	if (leaks)
1765		return (2);
1766
1767	if (zcb.zcb_haderrors)
1768		return (3);
1769
1770	return (0);
1771}
1772
1773static void
1774dump_zpool(spa_t *spa)
1775{
1776	dsl_pool_t *dp = spa_get_dsl(spa);
1777	int rc = 0;
1778
1779	if (dump_opt['u'])
1780		dump_uberblock(&spa->spa_uberblock);
1781
1782	if (dump_opt['d'] || dump_opt['i']) {
1783		dump_dir(dp->dp_meta_objset);
1784		if (dump_opt['d'] >= 3) {
1785			dump_bplist(dp->dp_meta_objset,
1786			    spa->spa_sync_bplist_obj, "Deferred frees");
1787			dump_dtl(spa->spa_root_vdev, 0);
1788			dump_metaslabs(spa);
1789		}
1790		(void) dmu_objset_find(spa_name(spa), dump_one_dir, NULL,
1791		    DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1792	}
1793
1794	if (dump_opt['b'] || dump_opt['c'] || dump_opt['S'])
1795		rc = dump_block_stats(spa);
1796
1797	if (dump_opt['s'])
1798		show_pool_stats(spa);
1799
1800	if (rc != 0)
1801		exit(rc);
1802}
1803
1804#define	ZDB_FLAG_CHECKSUM	0x0001
1805#define	ZDB_FLAG_DECOMPRESS	0x0002
1806#define	ZDB_FLAG_BSWAP		0x0004
1807#define	ZDB_FLAG_GBH		0x0008
1808#define	ZDB_FLAG_INDIRECT	0x0010
1809#define	ZDB_FLAG_PHYS		0x0020
1810#define	ZDB_FLAG_RAW		0x0040
1811#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
1812
1813int flagbits[256];
1814
1815static void
1816zdb_print_blkptr(blkptr_t *bp, int flags)
1817{
1818	dva_t *dva = bp->blk_dva;
1819	int d;
1820
1821	if (flags & ZDB_FLAG_BSWAP)
1822		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1823	/*
1824	 * Super-ick warning:  This code is also duplicated in
1825	 * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1826	 * replication, too.
1827	 */
1828	for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1829		(void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1830		    (longlong_t)DVA_GET_VDEV(&dva[d]),
1831		    (longlong_t)DVA_GET_OFFSET(&dva[d]));
1832		(void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1833		    "ASIZE: %llx\n", d,
1834		    DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1835		    (longlong_t)DVA_GET_GRID(&dva[d]),
1836		    (longlong_t)DVA_GET_ASIZE(&dva[d]));
1837		(void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1838		    (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1839		    (longlong_t)DVA_GET_OFFSET(&dva[d]),
1840		    (longlong_t)BP_GET_PSIZE(bp),
1841		    BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1842		    !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1843		    "d" : "",
1844		    DVA_GET_GANG(&dva[d]) ? "g" : "",
1845		    BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1846	}
1847	(void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1848	    (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1849	(void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1850	    BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1851	    dmu_ot[BP_GET_TYPE(bp)].ot_name);
1852	(void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1853	    (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1854	    (u_longlong_t)bp->blk_fill);
1855	(void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1856	    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1857	    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1858	(void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1859	    (u_longlong_t)bp->blk_cksum.zc_word[0],
1860	    (u_longlong_t)bp->blk_cksum.zc_word[1],
1861	    (u_longlong_t)bp->blk_cksum.zc_word[2],
1862	    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1863}
1864
1865static void
1866zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1867{
1868	int i;
1869
1870	for (i = 0; i < nbps; i++)
1871		zdb_print_blkptr(&bp[i], flags);
1872}
1873
1874static void
1875zdb_dump_gbh(void *buf, int flags)
1876{
1877	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1878}
1879
1880static void
1881zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1882{
1883	if (flags & ZDB_FLAG_BSWAP)
1884		byteswap_uint64_array(buf, size);
1885	(void) write(2, buf, size);
1886}
1887
1888static void
1889zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1890{
1891	uint64_t *d = (uint64_t *)buf;
1892	int nwords = size / sizeof (uint64_t);
1893	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1894	int i, j;
1895	char *hdr, *c;
1896
1897
1898	if (do_bswap)
1899		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1900	else
1901		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1902
1903	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1904
1905	for (i = 0; i < nwords; i += 2) {
1906		(void) printf("%06llx:  %016llx  %016llx  ",
1907		    (u_longlong_t)(i * sizeof (uint64_t)),
1908		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1909		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1910
1911		c = (char *)&d[i];
1912		for (j = 0; j < 2 * sizeof (uint64_t); j++)
1913			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
1914		(void) printf("\n");
1915	}
1916}
1917
1918/*
1919 * There are two acceptable formats:
1920 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
1921 *	child[.child]*    - For example: 0.1.1
1922 *
1923 * The second form can be used to specify arbitrary vdevs anywhere
1924 * in the heirarchy.  For example, in a pool with a mirror of
1925 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1926 */
1927static vdev_t *
1928zdb_vdev_lookup(vdev_t *vdev, char *path)
1929{
1930	char *s, *p, *q;
1931	int i;
1932
1933	if (vdev == NULL)
1934		return (NULL);
1935
1936	/* First, assume the x.x.x.x format */
1937	i = (int)strtoul(path, &s, 10);
1938	if (s == path || (s && *s != '.' && *s != '\0'))
1939		goto name;
1940	if (i < 0 || i >= vdev->vdev_children)
1941		return (NULL);
1942
1943	vdev = vdev->vdev_child[i];
1944	if (*s == '\0')
1945		return (vdev);
1946	return (zdb_vdev_lookup(vdev, s+1));
1947
1948name:
1949	for (i = 0; i < vdev->vdev_children; i++) {
1950		vdev_t *vc = vdev->vdev_child[i];
1951
1952		if (vc->vdev_path == NULL) {
1953			vc = zdb_vdev_lookup(vc, path);
1954			if (vc == NULL)
1955				continue;
1956			else
1957				return (vc);
1958		}
1959
1960		p = strrchr(vc->vdev_path, '/');
1961		p = p ? p + 1 : vc->vdev_path;
1962		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
1963
1964		if (strcmp(vc->vdev_path, path) == 0)
1965			return (vc);
1966		if (strcmp(p, path) == 0)
1967			return (vc);
1968		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
1969			return (vc);
1970	}
1971
1972	return (NULL);
1973}
1974
1975/*
1976 * Read a block from a pool and print it out.  The syntax of the
1977 * block descriptor is:
1978 *
1979 *	pool:vdev_specifier:offset:size[:flags]
1980 *
1981 *	pool           - The name of the pool you wish to read from
1982 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
1983 *	offset         - offset, in hex, in bytes
1984 *	size           - Amount of data to read, in hex, in bytes
1985 *	flags          - A string of characters specifying options
1986 *		 b: Decode a blkptr at given offset within block
1987 *		*c: Calculate and display checksums
1988 *		*d: Decompress data before dumping
1989 *		 e: Byteswap data before dumping
1990 *		*g: Display data as a gang block header
1991 *		*i: Display as an indirect block
1992 *		 p: Do I/O to physical offset
1993 *		 r: Dump raw data to stdout
1994 *
1995 *              * = not yet implemented
1996 */
1997static void
1998zdb_read_block(char *thing, spa_t **spap)
1999{
2000	spa_t *spa = *spap;
2001	int flags = 0;
2002	uint64_t offset = 0, size = 0, blkptr_offset = 0;
2003	zio_t *zio;
2004	vdev_t *vd;
2005	void *buf;
2006	char *s, *p, *dup, *pool, *vdev, *flagstr;
2007	int i, error, zio_flags;
2008
2009	dup = strdup(thing);
2010	s = strtok(dup, ":");
2011	pool = s ? s : "";
2012	s = strtok(NULL, ":");
2013	vdev = s ? s : "";
2014	s = strtok(NULL, ":");
2015	offset = strtoull(s ? s : "", NULL, 16);
2016	s = strtok(NULL, ":");
2017	size = strtoull(s ? s : "", NULL, 16);
2018	s = strtok(NULL, ":");
2019	flagstr = s ? s : "";
2020
2021	s = NULL;
2022	if (size == 0)
2023		s = "size must not be zero";
2024	if (!IS_P2ALIGNED(size, DEV_BSIZE))
2025		s = "size must be a multiple of sector size";
2026	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2027		s = "offset must be a multiple of sector size";
2028	if (s) {
2029		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2030		free(dup);
2031		return;
2032	}
2033
2034	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2035		for (i = 0; flagstr[i]; i++) {
2036			int bit = flagbits[(uchar_t)flagstr[i]];
2037
2038			if (bit == 0) {
2039				(void) printf("***Invalid flag: %c\n",
2040				    flagstr[i]);
2041				continue;
2042			}
2043			flags |= bit;
2044
2045			/* If it's not something with an argument, keep going */
2046			if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2047			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
2048				continue;
2049
2050			p = &flagstr[i + 1];
2051			if (bit == ZDB_FLAG_PRINT_BLKPTR)
2052				blkptr_offset = strtoull(p, &p, 16);
2053			if (*p != ':' && *p != '\0') {
2054				(void) printf("***Invalid flag arg: '%s'\n", s);
2055				free(dup);
2056				return;
2057			}
2058		}
2059	}
2060
2061	if (spa == NULL || strcmp(spa_name(spa), pool) != 0) {
2062		if (spa)
2063			spa_close(spa, (void *)zdb_read_block);
2064		error = spa_open(pool, spap, (void *)zdb_read_block);
2065		if (error)
2066			fatal("Failed to open pool '%s': %s",
2067			    pool, strerror(error));
2068		spa = *spap;
2069	}
2070
2071	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2072	if (vd == NULL) {
2073		(void) printf("***Invalid vdev: %s\n", vdev);
2074		free(dup);
2075		return;
2076	} else {
2077		if (vd->vdev_path)
2078			(void) printf("Found vdev: %s\n", vd->vdev_path);
2079		else
2080			(void) printf("Found vdev type: %s\n",
2081			    vd->vdev_ops->vdev_op_type);
2082	}
2083
2084	buf = umem_alloc(size, UMEM_NOFAIL);
2085
2086	zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2087	    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY;
2088
2089	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2090	zio = zio_root(spa, NULL, NULL, 0);
2091	/* XXX todo - cons up a BP so RAID-Z will be happy */
2092	zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2093	    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2094	error = zio_wait(zio);
2095	spa_config_exit(spa, SCL_STATE, FTAG);
2096
2097	if (error) {
2098		(void) printf("Read of %s failed, error: %d\n", thing, error);
2099		goto out;
2100	}
2101
2102	if (flags & ZDB_FLAG_PRINT_BLKPTR)
2103		zdb_print_blkptr((blkptr_t *)(void *)
2104		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2105	else if (flags & ZDB_FLAG_RAW)
2106		zdb_dump_block_raw(buf, size, flags);
2107	else if (flags & ZDB_FLAG_INDIRECT)
2108		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2109		    flags);
2110	else if (flags & ZDB_FLAG_GBH)
2111		zdb_dump_gbh(buf, flags);
2112	else
2113		zdb_dump_block(thing, buf, size, flags);
2114
2115out:
2116	umem_free(buf, size);
2117	free(dup);
2118}
2119
2120static boolean_t
2121nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2122{
2123	char *s;
2124
2125	if (nvlist_lookup_string(config, name, &s) != 0)
2126		return (B_FALSE);
2127
2128	return (strcmp(s, tgt) == 0);
2129}
2130
2131static boolean_t
2132nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2133{
2134	uint64_t val;
2135
2136	if (nvlist_lookup_uint64(config, name, &val) != 0)
2137		return (B_FALSE);
2138
2139	return (val == tgt);
2140}
2141
2142static boolean_t
2143vdev_child_guid_match(nvlist_t *vdev, uint64_t guid)
2144{
2145	nvlist_t **child;
2146	uint_t c, children;
2147
2148	verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2149	    &child, &children) == 0);
2150	for (c = 0; c < children; ++c)
2151		if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid))
2152			return (B_TRUE);
2153	return (B_FALSE);
2154}
2155
2156static boolean_t
2157vdev_child_string_match(nvlist_t *vdev, char *tgt)
2158{
2159	nvlist_t **child;
2160	uint_t c, children;
2161
2162	verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2163	    &child, &children) == 0);
2164	for (c = 0; c < children; ++c) {
2165		if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) ||
2166		    nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt))
2167			return (B_TRUE);
2168	}
2169	return (B_FALSE);
2170}
2171
2172static boolean_t
2173vdev_guid_match(nvlist_t *config, uint64_t guid)
2174{
2175	nvlist_t *nvroot;
2176
2177	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2178	    &nvroot) == 0);
2179
2180	return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) ||
2181	    vdev_child_guid_match(nvroot, guid));
2182}
2183
2184static boolean_t
2185vdev_string_match(nvlist_t *config, char *tgt)
2186{
2187	nvlist_t *nvroot;
2188
2189	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2190	    &nvroot) == 0);
2191
2192	return (vdev_child_string_match(nvroot, tgt));
2193}
2194
2195static boolean_t
2196pool_match(nvlist_t *config, char *tgt)
2197{
2198	uint64_t guid = strtoull(tgt, NULL, 0);
2199
2200	if (guid != 0) {
2201		return (
2202		    nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) ||
2203		    vdev_guid_match(config, guid));
2204	} else {
2205		return (
2206		    nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) ||
2207		    vdev_string_match(config, tgt));
2208	}
2209}
2210
2211static int
2212find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir)
2213{
2214	nvlist_t *pools;
2215	int error = ENOENT;
2216	nvlist_t *match = NULL;
2217
2218	if (vdev_dir != NULL)
2219		pools = zpool_find_import_activeok(g_zfs, 1, &vdev_dir);
2220	else
2221		pools = zpool_find_import_activeok(g_zfs, 0, NULL);
2222
2223	if (pools != NULL) {
2224		nvpair_t *elem = NULL;
2225
2226		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2227			verify(nvpair_value_nvlist(elem, configp) == 0);
2228			if (pool_match(*configp, pool_id)) {
2229				if (match != NULL) {
2230					(void) fatal(
2231					    "More than one matching pool - "
2232					    "specify guid/devid/device path.");
2233				} else {
2234					match = *configp;
2235					error = 0;
2236				}
2237			}
2238		}
2239	}
2240
2241	*configp = error ? NULL : match;
2242
2243	return (error);
2244}
2245
2246int
2247main(int argc, char **argv)
2248{
2249	int i, c;
2250	struct rlimit rl = { 1024, 1024 };
2251	spa_t *spa;
2252	objset_t *os = NULL;
2253	char *endstr;
2254	int dump_all = 1;
2255	int verbose = 0;
2256	int error;
2257	int exported = 0;
2258	char *vdev_dir = NULL;
2259
2260	(void) setrlimit(RLIMIT_NOFILE, &rl);
2261	(void) enable_extended_FILE_stdio(-1, -1);
2262
2263	dprintf_setup(&argc, argv);
2264
2265	while ((c = getopt(argc, argv, "udibcsvCLS:U:lRep:t:")) != -1) {
2266		switch (c) {
2267		case 'u':
2268		case 'd':
2269		case 'i':
2270		case 'b':
2271		case 'c':
2272		case 's':
2273		case 'C':
2274		case 'l':
2275		case 'R':
2276			dump_opt[c]++;
2277			dump_all = 0;
2278			break;
2279		case 'L':
2280			dump_opt[c]++;
2281			break;
2282		case 'v':
2283			verbose++;
2284			break;
2285		case 'U':
2286			spa_config_path = optarg;
2287			break;
2288		case 'e':
2289			exported = 1;
2290			break;
2291		case 'p':
2292			vdev_dir = optarg;
2293			break;
2294		case 'S':
2295			dump_opt[c]++;
2296			dump_all = 0;
2297			zdb_sig_user_data = (strncmp(optarg, "user:", 5) == 0);
2298			if (!zdb_sig_user_data && strncmp(optarg, "all:", 4))
2299				usage();
2300			endstr = strchr(optarg, ':') + 1;
2301			if (strcmp(endstr, "fletcher2") == 0)
2302				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2303			else if (strcmp(endstr, "fletcher4") == 0)
2304				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_4;
2305			else if (strcmp(endstr, "sha256") == 0)
2306				zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
2307			else if (strcmp(endstr, "all") == 0)
2308				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2309			else
2310				usage();
2311			break;
2312		case 't':
2313			ub_max_txg = strtoull(optarg, NULL, 0);
2314			if (ub_max_txg < TXG_INITIAL) {
2315				(void) fprintf(stderr, "incorrect txg "
2316				    "specified: %s\n", optarg);
2317				usage();
2318			}
2319			break;
2320		default:
2321			usage();
2322			break;
2323		}
2324	}
2325
2326	if (vdev_dir != NULL && exported == 0) {
2327		(void) fprintf(stderr, "-p option requires use of -e\n");
2328		usage();
2329	}
2330
2331	kernel_init(FREAD);
2332	g_zfs = libzfs_init();
2333	ASSERT(g_zfs != NULL);
2334
2335	for (c = 0; c < 256; c++) {
2336		if (dump_all && c != 'l' && c != 'R')
2337			dump_opt[c] = 1;
2338		if (dump_opt[c])
2339			dump_opt[c] += verbose;
2340	}
2341
2342	argc -= optind;
2343	argv += optind;
2344
2345	if (argc < 1) {
2346		if (dump_opt['C']) {
2347			dump_cachefile(spa_config_path);
2348			return (0);
2349		}
2350		usage();
2351	}
2352
2353	if (dump_opt['l']) {
2354		dump_label(argv[0]);
2355		return (0);
2356	}
2357
2358	if (dump_opt['R']) {
2359		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2360		flagbits['c'] = ZDB_FLAG_CHECKSUM;
2361		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2362		flagbits['e'] = ZDB_FLAG_BSWAP;
2363		flagbits['g'] = ZDB_FLAG_GBH;
2364		flagbits['i'] = ZDB_FLAG_INDIRECT;
2365		flagbits['p'] = ZDB_FLAG_PHYS;
2366		flagbits['r'] = ZDB_FLAG_RAW;
2367
2368		spa = NULL;
2369		while (argv[0]) {
2370			zdb_read_block(argv[0], &spa);
2371			argv++;
2372			argc--;
2373		}
2374		if (spa)
2375			spa_close(spa, (void *)zdb_read_block);
2376		return (0);
2377	}
2378
2379	if (dump_opt['C'])
2380		dump_config(argv[0]);
2381
2382	error = 0;
2383	if (exported) {
2384		/*
2385		 * Check to see if the name refers to an exported zpool
2386		 */
2387		char *slash;
2388		nvlist_t *exported_conf = NULL;
2389
2390		if ((slash = strchr(argv[0], '/')) != NULL)
2391			*slash = '\0';
2392
2393		error = find_exported_zpool(argv[0], &exported_conf, vdev_dir);
2394		if (error == 0) {
2395			nvlist_t *nvl = NULL;
2396
2397			if (vdev_dir != NULL) {
2398				if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2399					error = ENOMEM;
2400				else if (nvlist_add_string(nvl,
2401				    zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2402				    vdev_dir) != 0)
2403					error = ENOMEM;
2404			}
2405
2406			if (error == 0)
2407				error = spa_import_faulted(argv[0],
2408				    exported_conf, nvl);
2409
2410			nvlist_free(nvl);
2411		}
2412
2413		if (slash != NULL)
2414			*slash = '/';
2415	}
2416
2417	if (error == 0) {
2418		if (strchr(argv[0], '/') != NULL) {
2419			error = dmu_objset_open(argv[0], DMU_OST_ANY,
2420			    DS_MODE_USER | DS_MODE_READONLY, &os);
2421		} else {
2422			error = spa_open(argv[0], &spa, FTAG);
2423		}
2424	}
2425
2426	if (error)
2427		fatal("can't open %s: %s", argv[0], strerror(error));
2428
2429	argv++;
2430	if (--argc > 0) {
2431		zopt_objects = argc;
2432		zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2433		for (i = 0; i < zopt_objects; i++) {
2434			errno = 0;
2435			zopt_object[i] = strtoull(argv[i], NULL, 0);
2436			if (zopt_object[i] == 0 && errno != 0)
2437				fatal("bad object number %s: %s",
2438				    argv[i], strerror(errno));
2439		}
2440	}
2441
2442	if (os != NULL) {
2443		dump_dir(os);
2444		dmu_objset_close(os);
2445	} else {
2446		dump_zpool(spa);
2447		spa_close(spa, FTAG);
2448	}
2449
2450	fuid_table_destroy();
2451
2452	libzfs_fini(g_zfs);
2453	kernel_fini();
2454
2455	return (0);
2456}
2457