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5243 zdb -b could be much faster
[illumos-gate.git] / usr / src / cmd / zdb / zdb.c
blob3747e6106798e6e2a8cb69aced06482b1eea902b
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
25 */
26
27 #include <stdio.h>
28 #include <unistd.h>
29 #include <stdio_ext.h>
30 #include <stdlib.h>
31 #include <ctype.h>
32 #include <sys/zfs_context.h>
33 #include <sys/spa.h>
34 #include <sys/spa_impl.h>
35 #include <sys/dmu.h>
36 #include <sys/zap.h>
37 #include <sys/fs/zfs.h>
38 #include <sys/zfs_znode.h>
39 #include <sys/zfs_sa.h>
40 #include <sys/sa.h>
41 #include <sys/sa_impl.h>
42 #include <sys/vdev.h>
43 #include <sys/vdev_impl.h>
44 #include <sys/metaslab_impl.h>
45 #include <sys/dmu_objset.h>
46 #include <sys/dsl_dir.h>
47 #include <sys/dsl_dataset.h>
48 #include <sys/dsl_pool.h>
49 #include <sys/dbuf.h>
50 #include <sys/zil.h>
51 #include <sys/zil_impl.h>
52 #include <sys/stat.h>
53 #include <sys/resource.h>
54 #include <sys/dmu_traverse.h>
55 #include <sys/zio_checksum.h>
56 #include <sys/zio_compress.h>
57 #include <sys/zfs_fuid.h>
58 #include <sys/arc.h>
59 #include <sys/ddt.h>
60 #include <sys/zfeature.h>
61 #include <zfs_comutil.h>
62 #undef ZFS_MAXNAMELEN
63 #undef verify
64 #include <libzfs.h>
65
66 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \
67 zio_compress_table[(idx)].ci_name : "UNKNOWN")
68 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \
69 zio_checksum_table[(idx)].ci_name : "UNKNOWN")
70 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \
71 dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ? \
72 dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
73 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : \
74 (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
75 DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
76
77 #ifndef lint
78 extern boolean_t zfs_recover;
79 extern uint64_t zfs_arc_max, zfs_arc_meta_limit;
80 extern int zfs_vdev_async_read_max_active;
81 #else
82 boolean_t zfs_recover;
83 uint64_t zfs_arc_max, zfs_arc_meta_limit;
84 int zfs_vdev_async_read_max_active;
85 #endif
86
87 const char cmdname[] = "zdb";
88 uint8_t dump_opt[256];
89
90 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
91
92 extern void dump_intent_log(zilog_t *);
93 uint64_t *zopt_object = NULL;
94 int zopt_objects = 0;
95 libzfs_handle_t *g_zfs;
96 uint64_t max_inflight = 1000;
97
98 /*
99 * These libumem hooks provide a reasonable set of defaults for the allocator's
100 * debugging facilities.
101 */
102 const char *
103 _umem_debug_init()
104 {
105 return ("default,verbose"); /* $UMEM_DEBUG setting */
106 }
107
108 const char *
109 _umem_logging_init(void)
110 {
111 return ("fail,contents"); /* $UMEM_LOGGING setting */
112 }
113
114 static void
115 usage(void)
116 {
117 (void) fprintf(stderr,
118 "Usage: %s [-CumMdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
119 "[-U config] [-I inflight I/Os] [-x dumpdir] poolname [object...]\n"
120 " %s [-divPA] [-e -p path...] [-U config] dataset "
121 "[object...]\n"
122 " %s -mM [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
123 "poolname [vdev [metaslab...]]\n"
124 " %s -R [-A] [-e [-p path...]] poolname "
125 "vdev:offset:size[:flags]\n"
126 " %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
127 " %s -l [-uA] device\n"
128 " %s -C [-A] [-U config]\n\n",
129 cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
130
131 (void) fprintf(stderr, " Dataset name must include at least one "
132 "separator character '/' or '@'\n");
133 (void) fprintf(stderr, " If dataset name is specified, only that "
134 "dataset is dumped\n");
135 (void) fprintf(stderr, " If object numbers are specified, only "
136 "those objects are dumped\n\n");
137 (void) fprintf(stderr, " Options to control amount of output:\n");
138 (void) fprintf(stderr, " -u uberblock\n");
139 (void) fprintf(stderr, " -d dataset(s)\n");
140 (void) fprintf(stderr, " -i intent logs\n");
141 (void) fprintf(stderr, " -C config (or cachefile if alone)\n");
142 (void) fprintf(stderr, " -h pool history\n");
143 (void) fprintf(stderr, " -b block statistics\n");
144 (void) fprintf(stderr, " -m metaslabs\n");
145 (void) fprintf(stderr, " -M metaslab groups\n");
146 (void) fprintf(stderr, " -c checksum all metadata (twice for "
147 "all data) blocks\n");
148 (void) fprintf(stderr, " -s report stats on zdb's I/O\n");
149 (void) fprintf(stderr, " -D dedup statistics\n");
150 (void) fprintf(stderr, " -S simulate dedup to measure effect\n");
151 (void) fprintf(stderr, " -v verbose (applies to all others)\n");
152 (void) fprintf(stderr, " -l dump label contents\n");
153 (void) fprintf(stderr, " -L disable leak tracking (do not "
154 "load spacemaps)\n");
155 (void) fprintf(stderr, " -R read and display block from a "
156 "device\n\n");
157 (void) fprintf(stderr, " Below options are intended for use "
158 "with other options:\n");
159 (void) fprintf(stderr, " -A ignore assertions (-A), enable "
160 "panic recovery (-AA) or both (-AAA)\n");
161 (void) fprintf(stderr, " -F attempt automatic rewind within "
162 "safe range of transaction groups\n");
163 (void) fprintf(stderr, " -U <cachefile_path> -- use alternate "
164 "cachefile\n");
165 (void) fprintf(stderr, " -X attempt extreme rewind (does not "
166 "work with dataset)\n");
167 (void) fprintf(stderr, " -e pool is exported/destroyed/"
168 "has altroot/not in a cachefile\n");
169 (void) fprintf(stderr, " -p <path> -- use one or more with "
170 "-e to specify path to vdev dir\n");
171 (void) fprintf(stderr, " -x <dumpdir> -- "
172 "dump all read blocks into specified directory\n");
173 (void) fprintf(stderr, " -P print numbers in parseable form\n");
174 (void) fprintf(stderr, " -t <txg> -- highest txg to use when "
175 "searching for uberblocks\n");
176 (void) fprintf(stderr, " -I <number of inflight I/Os> -- "
177 "specify the maximum number of "
178 "checksumming I/Os [default is 200]\n");
179 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
180 "to make only that option verbose\n");
181 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
182 exit(1);
183 }
184
185 /*
186 * Called for usage errors that are discovered after a call to spa_open(),
187 * dmu_bonus_hold(), or pool_match(). abort() is called for other errors.
188 */
189
190 static void
191 fatal(const char *fmt, ...)
192 {
193 va_list ap;
194
195 va_start(ap, fmt);
196 (void) fprintf(stderr, "%s: ", cmdname);
197 (void) vfprintf(stderr, fmt, ap);
198 va_end(ap);
199 (void) fprintf(stderr, "\n");
200
201 exit(1);
202 }
203
204 /* ARGSUSED */
205 static void
206 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
207 {
208 nvlist_t *nv;
209 size_t nvsize = *(uint64_t *)data;
210 char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
211
212 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
213
214 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
215
216 umem_free(packed, nvsize);
217
218 dump_nvlist(nv, 8);
219
220 nvlist_free(nv);
221 }
222
223 /* ARGSUSED */
224 static void
225 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
226 {
227 spa_history_phys_t *shp = data;
228
229 if (shp == NULL)
230 return;
231
232 (void) printf("\t\tpool_create_len = %llu\n",
233 (u_longlong_t)shp->sh_pool_create_len);
234 (void) printf("\t\tphys_max_off = %llu\n",
235 (u_longlong_t)shp->sh_phys_max_off);
236 (void) printf("\t\tbof = %llu\n",
237 (u_longlong_t)shp->sh_bof);
238 (void) printf("\t\teof = %llu\n",
239 (u_longlong_t)shp->sh_eof);
240 (void) printf("\t\trecords_lost = %llu\n",
241 (u_longlong_t)shp->sh_records_lost);
242 }
243
244 static void
245 zdb_nicenum(uint64_t num, char *buf)
246 {
247 if (dump_opt['P'])
248 (void) sprintf(buf, "%llu", (longlong_t)num);
249 else
250 nicenum(num, buf);
251 }
252
253 const char histo_stars[] = "****************************************";
254 const int histo_width = sizeof (histo_stars) - 1;
255
256 static void
257 dump_histogram(const uint64_t *histo, int size, int offset)
258 {
259 int i;
260 int minidx = size - 1;
261 int maxidx = 0;
262 uint64_t max = 0;
263
264 for (i = 0; i < size; i++) {
265 if (histo[i] > max)
266 max = histo[i];
267 if (histo[i] > 0 && i > maxidx)
268 maxidx = i;
269 if (histo[i] > 0 && i < minidx)
270 minidx = i;
271 }
272
273 if (max < histo_width)
274 max = histo_width;
275
276 for (i = minidx; i <= maxidx; i++) {
277 (void) printf("\t\t\t%3u: %6llu %s\n",
278 i + offset, (u_longlong_t)histo[i],
279 &histo_stars[(max - histo[i]) * histo_width / max]);
280 }
281 }
282
283 static void
284 dump_zap_stats(objset_t *os, uint64_t object)
285 {
286 int error;
287 zap_stats_t zs;
288
289 error = zap_get_stats(os, object, &zs);
290 if (error)
291 return;
292
293 if (zs.zs_ptrtbl_len == 0) {
294 ASSERT(zs.zs_num_blocks == 1);
295 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
296 (u_longlong_t)zs.zs_blocksize,
297 (u_longlong_t)zs.zs_num_entries);
298 return;
299 }
300
301 (void) printf("\tFat ZAP stats:\n");
302
303 (void) printf("\t\tPointer table:\n");
304 (void) printf("\t\t\t%llu elements\n",
305 (u_longlong_t)zs.zs_ptrtbl_len);
306 (void) printf("\t\t\tzt_blk: %llu\n",
307 (u_longlong_t)zs.zs_ptrtbl_zt_blk);
308 (void) printf("\t\t\tzt_numblks: %llu\n",
309 (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
310 (void) printf("\t\t\tzt_shift: %llu\n",
311 (u_longlong_t)zs.zs_ptrtbl_zt_shift);
312 (void) printf("\t\t\tzt_blks_copied: %llu\n",
313 (u_longlong_t)zs.zs_ptrtbl_blks_copied);
314 (void) printf("\t\t\tzt_nextblk: %llu\n",
315 (u_longlong_t)zs.zs_ptrtbl_nextblk);
316
317 (void) printf("\t\tZAP entries: %llu\n",
318 (u_longlong_t)zs.zs_num_entries);
319 (void) printf("\t\tLeaf blocks: %llu\n",
320 (u_longlong_t)zs.zs_num_leafs);
321 (void) printf("\t\tTotal blocks: %llu\n",
322 (u_longlong_t)zs.zs_num_blocks);
323 (void) printf("\t\tzap_block_type: 0x%llx\n",
324 (u_longlong_t)zs.zs_block_type);
325 (void) printf("\t\tzap_magic: 0x%llx\n",
326 (u_longlong_t)zs.zs_magic);
327 (void) printf("\t\tzap_salt: 0x%llx\n",
328 (u_longlong_t)zs.zs_salt);
329
330 (void) printf("\t\tLeafs with 2^n pointers:\n");
331 dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
332
333 (void) printf("\t\tBlocks with n*5 entries:\n");
334 dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
335
336 (void) printf("\t\tBlocks n/10 full:\n");
337 dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
338
339 (void) printf("\t\tEntries with n chunks:\n");
340 dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
341
342 (void) printf("\t\tBuckets with n entries:\n");
343 dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
344 }
345
346 /*ARGSUSED*/
347 static void
348 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
349 {
350 }
351
352 /*ARGSUSED*/
353 static void
354 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
355 {
356 (void) printf("\tUNKNOWN OBJECT TYPE\n");
357 }
358
359 /*ARGSUSED*/
360 void
361 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
362 {
363 }
364
365 /*ARGSUSED*/
366 static void
367 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
368 {
369 }
370
371 /*ARGSUSED*/
372 static void
373 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
374 {
375 zap_cursor_t zc;
376 zap_attribute_t attr;
377 void *prop;
378 int i;
379
380 dump_zap_stats(os, object);
381 (void) printf("\n");
382
383 for (zap_cursor_init(&zc, os, object);
384 zap_cursor_retrieve(&zc, &attr) == 0;
385 zap_cursor_advance(&zc)) {
386 (void) printf("\t\t%s = ", attr.za_name);
387 if (attr.za_num_integers == 0) {
388 (void) printf("\n");
389 continue;
390 }
391 prop = umem_zalloc(attr.za_num_integers *
392 attr.za_integer_length, UMEM_NOFAIL);
393 (void) zap_lookup(os, object, attr.za_name,
394 attr.za_integer_length, attr.za_num_integers, prop);
395 if (attr.za_integer_length == 1) {
396 (void) printf("%s", (char *)prop);
397 } else {
398 for (i = 0; i < attr.za_num_integers; i++) {
399 switch (attr.za_integer_length) {
400 case 2:
401 (void) printf("%u ",
402 ((uint16_t *)prop)[i]);
403 break;
404 case 4:
405 (void) printf("%u ",
406 ((uint32_t *)prop)[i]);
407 break;
408 case 8:
409 (void) printf("%lld ",
410 (u_longlong_t)((int64_t *)prop)[i]);
411 break;
412 }
413 }
414 }
415 (void) printf("\n");
416 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
417 }
418 zap_cursor_fini(&zc);
419 }
420
421 /*ARGSUSED*/
422 static void
423 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
424 {
425 dump_zap_stats(os, object);
426 /* contents are printed elsewhere, properly decoded */
427 }
428
429 /*ARGSUSED*/
430 static void
431 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
432 {
433 zap_cursor_t zc;
434 zap_attribute_t attr;
435
436 dump_zap_stats(os, object);
437 (void) printf("\n");
438
439 for (zap_cursor_init(&zc, os, object);
440 zap_cursor_retrieve(&zc, &attr) == 0;
441 zap_cursor_advance(&zc)) {
442 (void) printf("\t\t%s = ", attr.za_name);
443 if (attr.za_num_integers == 0) {
444 (void) printf("\n");
445 continue;
446 }
447 (void) printf(" %llx : [%d:%d:%d]\n",
448 (u_longlong_t)attr.za_first_integer,
449 (int)ATTR_LENGTH(attr.za_first_integer),
450 (int)ATTR_BSWAP(attr.za_first_integer),
451 (int)ATTR_NUM(attr.za_first_integer));
452 }
453 zap_cursor_fini(&zc);
454 }
455
456 /*ARGSUSED*/
457 static void
458 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
459 {
460 zap_cursor_t zc;
461 zap_attribute_t attr;
462 uint16_t *layout_attrs;
463 int i;
464
465 dump_zap_stats(os, object);
466 (void) printf("\n");
467
468 for (zap_cursor_init(&zc, os, object);
469 zap_cursor_retrieve(&zc, &attr) == 0;
470 zap_cursor_advance(&zc)) {
471 (void) printf("\t\t%s = [", attr.za_name);
472 if (attr.za_num_integers == 0) {
473 (void) printf("\n");
474 continue;
475 }
476
477 VERIFY(attr.za_integer_length == 2);
478 layout_attrs = umem_zalloc(attr.za_num_integers *
479 attr.za_integer_length, UMEM_NOFAIL);
480
481 VERIFY(zap_lookup(os, object, attr.za_name,
482 attr.za_integer_length,
483 attr.za_num_integers, layout_attrs) == 0);
484
485 for (i = 0; i != attr.za_num_integers; i++)
486 (void) printf(" %d ", (int)layout_attrs[i]);
487 (void) printf("]\n");
488 umem_free(layout_attrs,
489 attr.za_num_integers * attr.za_integer_length);
490 }
491 zap_cursor_fini(&zc);
492 }
493
494 /*ARGSUSED*/
495 static void
496 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
497 {
498 zap_cursor_t zc;
499 zap_attribute_t attr;
500 const char *typenames[] = {
501 /* 0 */ "not specified",
502 /* 1 */ "FIFO",
503 /* 2 */ "Character Device",
504 /* 3 */ "3 (invalid)",
505 /* 4 */ "Directory",
506 /* 5 */ "5 (invalid)",
507 /* 6 */ "Block Device",
508 /* 7 */ "7 (invalid)",
509 /* 8 */ "Regular File",
510 /* 9 */ "9 (invalid)",
511 /* 10 */ "Symbolic Link",
512 /* 11 */ "11 (invalid)",
513 /* 12 */ "Socket",
514 /* 13 */ "Door",
515 /* 14 */ "Event Port",
516 /* 15 */ "15 (invalid)",
517 };
518
519 dump_zap_stats(os, object);
520 (void) printf("\n");
521
522 for (zap_cursor_init(&zc, os, object);
523 zap_cursor_retrieve(&zc, &attr) == 0;
524 zap_cursor_advance(&zc)) {
525 (void) printf("\t\t%s = %lld (type: %s)\n",
526 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
527 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
528 }
529 zap_cursor_fini(&zc);
530 }
531
532 int
533 get_dtl_refcount(vdev_t *vd)
534 {
535 int refcount = 0;
536
537 if (vd->vdev_ops->vdev_op_leaf) {
538 space_map_t *sm = vd->vdev_dtl_sm;
539
540 if (sm != NULL &&
541 sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
542 return (1);
543 return (0);
544 }
545
546 for (int c = 0; c < vd->vdev_children; c++)
547 refcount += get_dtl_refcount(vd->vdev_child[c]);
548 return (refcount);
549 }
550
551 int
552 get_metaslab_refcount(vdev_t *vd)
553 {
554 int refcount = 0;
555
556 if (vd->vdev_top == vd && !vd->vdev_removing) {
557 for (int m = 0; m < vd->vdev_ms_count; m++) {
558 space_map_t *sm = vd->vdev_ms[m]->ms_sm;
559
560 if (sm != NULL &&
561 sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
562 refcount++;
563 }
564 }
565 for (int c = 0; c < vd->vdev_children; c++)
566 refcount += get_metaslab_refcount(vd->vdev_child[c]);
567
568 return (refcount);
569 }
570
571 static int
572 verify_spacemap_refcounts(spa_t *spa)
573 {
574 uint64_t expected_refcount = 0;
575 uint64_t actual_refcount;
576
577 (void) feature_get_refcount(spa,
578 &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
579 &expected_refcount);
580 actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
581 actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
582
583 if (expected_refcount != actual_refcount) {
584 (void) printf("space map refcount mismatch: expected %lld != "
585 "actual %lld\n",
586 (longlong_t)expected_refcount,
587 (longlong_t)actual_refcount);
588 return (2);
589 }
590 return (0);
591 }
592
593 static void
594 dump_spacemap(objset_t *os, space_map_t *sm)
595 {
596 uint64_t alloc, offset, entry;
597 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
598 "INVALID", "INVALID", "INVALID", "INVALID" };
599
600 if (sm == NULL)
601 return;
602
603 /*
604 * Print out the freelist entries in both encoded and decoded form.
605 */
606 alloc = 0;
607 for (offset = 0; offset < space_map_length(sm);
608 offset += sizeof (entry)) {
609 uint8_t mapshift = sm->sm_shift;
610
611 VERIFY0(dmu_read(os, space_map_object(sm), offset,
612 sizeof (entry), &entry, DMU_READ_PREFETCH));
613 if (SM_DEBUG_DECODE(entry)) {
614
615 (void) printf("\t [%6llu] %s: txg %llu, pass %llu\n",
616 (u_longlong_t)(offset / sizeof (entry)),
617 ddata[SM_DEBUG_ACTION_DECODE(entry)],
618 (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
619 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
620 } else {
621 (void) printf("\t [%6llu] %c range:"
622 " %010llx-%010llx size: %06llx\n",
623 (u_longlong_t)(offset / sizeof (entry)),
624 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
625 (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
626 mapshift) + sm->sm_start),
627 (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
628 mapshift) + sm->sm_start +
629 (SM_RUN_DECODE(entry) << mapshift)),
630 (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
631 if (SM_TYPE_DECODE(entry) == SM_ALLOC)
632 alloc += SM_RUN_DECODE(entry) << mapshift;
633 else
634 alloc -= SM_RUN_DECODE(entry) << mapshift;
635 }
636 }
637 if (alloc != space_map_allocated(sm)) {
638 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
639 "with space map summary (%llu)\n",
640 (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
641 }
642 }
643
644 static void
645 dump_metaslab_stats(metaslab_t *msp)
646 {
647 char maxbuf[32];
648 range_tree_t *rt = msp->ms_tree;
649 avl_tree_t *t = &msp->ms_size_tree;
650 int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
651
652 zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
653
654 (void) printf("\t %25s %10lu %7s %6s %4s %4d%%\n",
655 "segments", avl_numnodes(t), "maxsize", maxbuf,
656 "freepct", free_pct);
657 (void) printf("\tIn-memory histogram:\n");
658 dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
659 }
660
661 static void
662 dump_metaslab(metaslab_t *msp)
663 {
664 vdev_t *vd = msp->ms_group->mg_vd;
665 spa_t *spa = vd->vdev_spa;
666 space_map_t *sm = msp->ms_sm;
667 char freebuf[32];
668
669 zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
670
671 (void) printf(
672 "\tmetaslab %6llu offset %12llx spacemap %6llu free %5s\n",
673 (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
674 (u_longlong_t)space_map_object(sm), freebuf);
675
676 if (dump_opt['m'] > 2 && !dump_opt['L']) {
677 mutex_enter(&msp->ms_lock);
678 metaslab_load_wait(msp);
679 if (!msp->ms_loaded) {
680 VERIFY0(metaslab_load(msp));
681 range_tree_stat_verify(msp->ms_tree);
682 }
683 dump_metaslab_stats(msp);
684 metaslab_unload(msp);
685 mutex_exit(&msp->ms_lock);
686 }
687
688 if (dump_opt['m'] > 1 && sm != NULL &&
689 spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
690 /*
691 * The space map histogram represents free space in chunks
692 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
693 */
694 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
695 (u_longlong_t)msp->ms_fragmentation);
696 dump_histogram(sm->sm_phys->smp_histogram,
697 SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
698 }
699
700 if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
701 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
702
703 mutex_enter(&msp->ms_lock);
704 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
705 mutex_exit(&msp->ms_lock);
706 }
707 }
708
709 static void
710 print_vdev_metaslab_header(vdev_t *vd)
711 {
712 (void) printf("\tvdev %10llu\n\t%-10s%5llu %-19s %-15s %-10s\n",
713 (u_longlong_t)vd->vdev_id,
714 "metaslabs", (u_longlong_t)vd->vdev_ms_count,
715 "offset", "spacemap", "free");
716 (void) printf("\t%15s %19s %15s %10s\n",
717 "---------------", "-------------------",
718 "---------------", "-------------");
719 }
720
721 static void
722 dump_metaslab_groups(spa_t *spa)
723 {
724 vdev_t *rvd = spa->spa_root_vdev;
725 metaslab_class_t *mc = spa_normal_class(spa);
726 uint64_t fragmentation;
727
728 metaslab_class_histogram_verify(mc);
729
730 for (int c = 0; c < rvd->vdev_children; c++) {
731 vdev_t *tvd = rvd->vdev_child[c];
732 metaslab_group_t *mg = tvd->vdev_mg;
733
734 if (mg->mg_class != mc)
735 continue;
736
737 metaslab_group_histogram_verify(mg);
738 mg->mg_fragmentation = metaslab_group_fragmentation(mg);
739
740 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
741 "fragmentation",
742 (u_longlong_t)tvd->vdev_id,
743 (u_longlong_t)tvd->vdev_ms_count);
744 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
745 (void) printf("%3s\n", "-");
746 } else {
747 (void) printf("%3llu%%\n",
748 (u_longlong_t)mg->mg_fragmentation);
749 }
750 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
751 }
752
753 (void) printf("\tpool %s\tfragmentation", spa_name(spa));
754 fragmentation = metaslab_class_fragmentation(mc);
755 if (fragmentation == ZFS_FRAG_INVALID)
756 (void) printf("\t%3s\n", "-");
757 else
758 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
759 dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
760 }
761
762 static void
763 dump_metaslabs(spa_t *spa)
764 {
765 vdev_t *vd, *rvd = spa->spa_root_vdev;
766 uint64_t m, c = 0, children = rvd->vdev_children;
767
768 (void) printf("\nMetaslabs:\n");
769
770 if (!dump_opt['d'] && zopt_objects > 0) {
771 c = zopt_object[0];
772
773 if (c >= children)
774 (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
775
776 if (zopt_objects > 1) {
777 vd = rvd->vdev_child[c];
778 print_vdev_metaslab_header(vd);
779
780 for (m = 1; m < zopt_objects; m++) {
781 if (zopt_object[m] < vd->vdev_ms_count)
782 dump_metaslab(
783 vd->vdev_ms[zopt_object[m]]);
784 else
785 (void) fprintf(stderr, "bad metaslab "
786 "number %llu\n",
787 (u_longlong_t)zopt_object[m]);
788 }
789 (void) printf("\n");
790 return;
791 }
792 children = c + 1;
793 }
794 for (; c < children; c++) {
795 vd = rvd->vdev_child[c];
796 print_vdev_metaslab_header(vd);
797
798 for (m = 0; m < vd->vdev_ms_count; m++)
799 dump_metaslab(vd->vdev_ms[m]);
800 (void) printf("\n");
801 }
802 }
803
804 static void
805 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
806 {
807 const ddt_phys_t *ddp = dde->dde_phys;
808 const ddt_key_t *ddk = &dde->dde_key;
809 char *types[4] = { "ditto", "single", "double", "triple" };
810 char blkbuf[BP_SPRINTF_LEN];
811 blkptr_t blk;
812
813 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
814 if (ddp->ddp_phys_birth == 0)
815 continue;
816 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
817 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
818 (void) printf("index %llx refcnt %llu %s %s\n",
819 (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
820 types[p], blkbuf);
821 }
822 }
823
824 static void
825 dump_dedup_ratio(const ddt_stat_t *dds)
826 {
827 double rL, rP, rD, D, dedup, compress, copies;
828
829 if (dds->dds_blocks == 0)
830 return;
831
832 rL = (double)dds->dds_ref_lsize;
833 rP = (double)dds->dds_ref_psize;
834 rD = (double)dds->dds_ref_dsize;
835 D = (double)dds->dds_dsize;
836
837 dedup = rD / D;
838 compress = rL / rP;
839 copies = rD / rP;
840
841 (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
842 "dedup * compress / copies = %.2f\n\n",
843 dedup, compress, copies, dedup * compress / copies);
844 }
845
846 static void
847 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
848 {
849 char name[DDT_NAMELEN];
850 ddt_entry_t dde;
851 uint64_t walk = 0;
852 dmu_object_info_t doi;
853 uint64_t count, dspace, mspace;
854 int error;
855
856 error = ddt_object_info(ddt, type, class, &doi);
857
858 if (error == ENOENT)
859 return;
860 ASSERT(error == 0);
861
862 if ((count = ddt_object_count(ddt, type, class)) == 0)
863 return;
864
865 dspace = doi.doi_physical_blocks_512 << 9;
866 mspace = doi.doi_fill_count * doi.doi_data_block_size;
867
868 ddt_object_name(ddt, type, class, name);
869
870 (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
871 name,
872 (u_longlong_t)count,
873 (u_longlong_t)(dspace / count),
874 (u_longlong_t)(mspace / count));
875
876 if (dump_opt['D'] < 3)
877 return;
878
879 zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
880
881 if (dump_opt['D'] < 4)
882 return;
883
884 if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
885 return;
886
887 (void) printf("%s contents:\n\n", name);
888
889 while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
890 dump_dde(ddt, &dde, walk);
891
892 ASSERT(error == ENOENT);
893
894 (void) printf("\n");
895 }
896
897 static void
898 dump_all_ddts(spa_t *spa)
899 {
900 ddt_histogram_t ddh_total = { 0 };
901 ddt_stat_t dds_total = { 0 };
902
903 for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
904 ddt_t *ddt = spa->spa_ddt[c];
905 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
906 for (enum ddt_class class = 0; class < DDT_CLASSES;
907 class++) {
908 dump_ddt(ddt, type, class);
909 }
910 }
911 }
912
913 ddt_get_dedup_stats(spa, &dds_total);
914
915 if (dds_total.dds_blocks == 0) {
916 (void) printf("All DDTs are empty\n");
917 return;
918 }
919
920 (void) printf("\n");
921
922 if (dump_opt['D'] > 1) {
923 (void) printf("DDT histogram (aggregated over all DDTs):\n");
924 ddt_get_dedup_histogram(spa, &ddh_total);
925 zpool_dump_ddt(&dds_total, &ddh_total);
926 }
927
928 dump_dedup_ratio(&dds_total);
929 }
930
931 static void
932 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
933 {
934 char *prefix = arg;
935
936 (void) printf("%s [%llu,%llu) length %llu\n",
937 prefix,
938 (u_longlong_t)start,
939 (u_longlong_t)(start + size),
940 (u_longlong_t)(size));
941 }
942
943 static void
944 dump_dtl(vdev_t *vd, int indent)
945 {
946 spa_t *spa = vd->vdev_spa;
947 boolean_t required;
948 char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
949 char prefix[256];
950
951 spa_vdev_state_enter(spa, SCL_NONE);
952 required = vdev_dtl_required(vd);
953 (void) spa_vdev_state_exit(spa, NULL, 0);
954
955 if (indent == 0)
956 (void) printf("\nDirty time logs:\n\n");
957
958 (void) printf("\t%*s%s [%s]\n", indent, "",
959 vd->vdev_path ? vd->vdev_path :
960 vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
961 required ? "DTL-required" : "DTL-expendable");
962
963 for (int t = 0; t < DTL_TYPES; t++) {
964 range_tree_t *rt = vd->vdev_dtl[t];
965 if (range_tree_space(rt) == 0)
966 continue;
967 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
968 indent + 2, "", name[t]);
969 mutex_enter(rt->rt_lock);
970 range_tree_walk(rt, dump_dtl_seg, prefix);
971 mutex_exit(rt->rt_lock);
972 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
973 dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
974 }
975
976 for (int c = 0; c < vd->vdev_children; c++)
977 dump_dtl(vd->vdev_child[c], indent + 4);
978 }
979
980 static void
981 dump_history(spa_t *spa)
982 {
983 nvlist_t **events = NULL;
984 char buf[SPA_MAXBLOCKSIZE];
985 uint64_t resid, len, off = 0;
986 uint_t num = 0;
987 int error;
988 time_t tsec;
989 struct tm t;
990 char tbuf[30];
991 char internalstr[MAXPATHLEN];
992
993 do {
994 len = sizeof (buf);
995
996 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
997 (void) fprintf(stderr, "Unable to read history: "
998 "error %d\n", error);
999 return;
1000 }
1001
1002 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1003 break;
1004
1005 off -= resid;
1006 } while (len != 0);
1007
1008 (void) printf("\nHistory:\n");
1009 for (int i = 0; i < num; i++) {
1010 uint64_t time, txg, ievent;
1011 char *cmd, *intstr;
1012 boolean_t printed = B_FALSE;
1013
1014 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
1015 &time) != 0)
1016 goto next;
1017 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
1018 &cmd) != 0) {
1019 if (nvlist_lookup_uint64(events[i],
1020 ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1021 goto next;
1022 verify(nvlist_lookup_uint64(events[i],
1023 ZPOOL_HIST_TXG, &txg) == 0);
1024 verify(nvlist_lookup_string(events[i],
1025 ZPOOL_HIST_INT_STR, &intstr) == 0);
1026 if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1027 goto next;
1028
1029 (void) snprintf(internalstr,
1030 sizeof (internalstr),
1031 "[internal %s txg:%lld] %s",
1032 zfs_history_event_names[ievent], txg,
1033 intstr);
1034 cmd = internalstr;
1035 }
1036 tsec = time;
1037 (void) localtime_r(&tsec, &t);
1038 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1039 (void) printf("%s %s\n", tbuf, cmd);
1040 printed = B_TRUE;
1041
1042 next:
1043 if (dump_opt['h'] > 1) {
1044 if (!printed)
1045 (void) printf("unrecognized record:\n");
1046 dump_nvlist(events[i], 2);
1047 }
1048 }
1049 }
1050
1051 /*ARGSUSED*/
1052 static void
1053 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1054 {
1055 }
1056
1057 static uint64_t
1058 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1059 const zbookmark_phys_t *zb)
1060 {
1061 if (dnp == NULL) {
1062 ASSERT(zb->zb_level < 0);
1063 if (zb->zb_object == 0)
1064 return (zb->zb_blkid);
1065 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1066 }
1067
1068 ASSERT(zb->zb_level >= 0);
1069
1070 return ((zb->zb_blkid <<
1071 (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1072 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1073 }
1074
1075 static void
1076 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1077 {
1078 const dva_t *dva = bp->blk_dva;
1079 int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1080
1081 if (dump_opt['b'] >= 6) {
1082 snprintf_blkptr(blkbuf, buflen, bp);
1083 return;
1084 }
1085
1086 if (BP_IS_EMBEDDED(bp)) {
1087 (void) sprintf(blkbuf,
1088 "EMBEDDED et=%u %llxL/%llxP B=%llu",
1089 (int)BPE_GET_ETYPE(bp),
1090 (u_longlong_t)BPE_GET_LSIZE(bp),
1091 (u_longlong_t)BPE_GET_PSIZE(bp),
1092 (u_longlong_t)bp->blk_birth);
1093 return;
1094 }
1095
1096 blkbuf[0] = '\0';
1097 for (int i = 0; i < ndvas; i++)
1098 (void) snprintf(blkbuf + strlen(blkbuf),
1099 buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1100 (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1101 (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1102 (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1103
1104 if (BP_IS_HOLE(bp)) {
1105 (void) snprintf(blkbuf + strlen(blkbuf),
1106 buflen - strlen(blkbuf), "B=%llu",
1107 (u_longlong_t)bp->blk_birth);
1108 } else {
1109 (void) snprintf(blkbuf + strlen(blkbuf),
1110 buflen - strlen(blkbuf),
1111 "%llxL/%llxP F=%llu B=%llu/%llu",
1112 (u_longlong_t)BP_GET_LSIZE(bp),
1113 (u_longlong_t)BP_GET_PSIZE(bp),
1114 (u_longlong_t)BP_GET_FILL(bp),
1115 (u_longlong_t)bp->blk_birth,
1116 (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1117 }
1118 }
1119
1120 static void
1121 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1122 const dnode_phys_t *dnp)
1123 {
1124 char blkbuf[BP_SPRINTF_LEN];
1125 int l;
1126
1127 if (!BP_IS_EMBEDDED(bp)) {
1128 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1129 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1130 }
1131
1132 (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1133
1134 ASSERT(zb->zb_level >= 0);
1135
1136 for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1137 if (l == zb->zb_level) {
1138 (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1139 } else {
1140 (void) printf(" ");
1141 }
1142 }
1143
1144 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1145 (void) printf("%s\n", blkbuf);
1146 }
1147
1148 static int
1149 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1150 blkptr_t *bp, const zbookmark_phys_t *zb)
1151 {
1152 int err = 0;
1153
1154 if (bp->blk_birth == 0)
1155 return (0);
1156
1157 print_indirect(bp, zb, dnp);
1158
1159 if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1160 uint32_t flags = ARC_WAIT;
1161 int i;
1162 blkptr_t *cbp;
1163 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1164 arc_buf_t *buf;
1165 uint64_t fill = 0;
1166
1167 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1168 ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1169 if (err)
1170 return (err);
1171 ASSERT(buf->b_data);
1172
1173 /* recursively visit blocks below this */
1174 cbp = buf->b_data;
1175 for (i = 0; i < epb; i++, cbp++) {
1176 zbookmark_phys_t czb;
1177
1178 SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1179 zb->zb_level - 1,
1180 zb->zb_blkid * epb + i);
1181 err = visit_indirect(spa, dnp, cbp, &czb);
1182 if (err)
1183 break;
1184 fill += BP_GET_FILL(cbp);
1185 }
1186 if (!err)
1187 ASSERT3U(fill, ==, BP_GET_FILL(bp));
1188 (void) arc_buf_remove_ref(buf, &buf);
1189 }
1190
1191 return (err);
1192 }
1193
1194 /*ARGSUSED*/
1195 static void
1196 dump_indirect(dnode_t *dn)
1197 {
1198 dnode_phys_t *dnp = dn->dn_phys;
1199 int j;
1200 zbookmark_phys_t czb;
1201
1202 (void) printf("Indirect blocks:\n");
1203
1204 SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1205 dn->dn_object, dnp->dn_nlevels - 1, 0);
1206 for (j = 0; j < dnp->dn_nblkptr; j++) {
1207 czb.zb_blkid = j;
1208 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1209 &dnp->dn_blkptr[j], &czb);
1210 }
1211
1212 (void) printf("\n");
1213 }
1214
1215 /*ARGSUSED*/
1216 static void
1217 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1218 {
1219 dsl_dir_phys_t *dd = data;
1220 time_t crtime;
1221 char nice[32];
1222
1223 if (dd == NULL)
1224 return;
1225
1226 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1227
1228 crtime = dd->dd_creation_time;
1229 (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1230 (void) printf("\t\thead_dataset_obj = %llu\n",
1231 (u_longlong_t)dd->dd_head_dataset_obj);
1232 (void) printf("\t\tparent_dir_obj = %llu\n",
1233 (u_longlong_t)dd->dd_parent_obj);
1234 (void) printf("\t\torigin_obj = %llu\n",
1235 (u_longlong_t)dd->dd_origin_obj);
1236 (void) printf("\t\tchild_dir_zapobj = %llu\n",
1237 (u_longlong_t)dd->dd_child_dir_zapobj);
1238 zdb_nicenum(dd->dd_used_bytes, nice);
1239 (void) printf("\t\tused_bytes = %s\n", nice);
1240 zdb_nicenum(dd->dd_compressed_bytes, nice);
1241 (void) printf("\t\tcompressed_bytes = %s\n", nice);
1242 zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1243 (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1244 zdb_nicenum(dd->dd_quota, nice);
1245 (void) printf("\t\tquota = %s\n", nice);
1246 zdb_nicenum(dd->dd_reserved, nice);
1247 (void) printf("\t\treserved = %s\n", nice);
1248 (void) printf("\t\tprops_zapobj = %llu\n",
1249 (u_longlong_t)dd->dd_props_zapobj);
1250 (void) printf("\t\tdeleg_zapobj = %llu\n",
1251 (u_longlong_t)dd->dd_deleg_zapobj);
1252 (void) printf("\t\tflags = %llx\n",
1253 (u_longlong_t)dd->dd_flags);
1254
1255 #define DO(which) \
1256 zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1257 (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1258 DO(HEAD);
1259 DO(SNAP);
1260 DO(CHILD);
1261 DO(CHILD_RSRV);
1262 DO(REFRSRV);
1263 #undef DO
1264 }
1265
1266 /*ARGSUSED*/
1267 static void
1268 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1269 {
1270 dsl_dataset_phys_t *ds = data;
1271 time_t crtime;
1272 char used[32], compressed[32], uncompressed[32], unique[32];
1273 char blkbuf[BP_SPRINTF_LEN];
1274
1275 if (ds == NULL)
1276 return;
1277
1278 ASSERT(size == sizeof (*ds));
1279 crtime = ds->ds_creation_time;
1280 zdb_nicenum(ds->ds_referenced_bytes, used);
1281 zdb_nicenum(ds->ds_compressed_bytes, compressed);
1282 zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1283 zdb_nicenum(ds->ds_unique_bytes, unique);
1284 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1285
1286 (void) printf("\t\tdir_obj = %llu\n",
1287 (u_longlong_t)ds->ds_dir_obj);
1288 (void) printf("\t\tprev_snap_obj = %llu\n",
1289 (u_longlong_t)ds->ds_prev_snap_obj);
1290 (void) printf("\t\tprev_snap_txg = %llu\n",
1291 (u_longlong_t)ds->ds_prev_snap_txg);
1292 (void) printf("\t\tnext_snap_obj = %llu\n",
1293 (u_longlong_t)ds->ds_next_snap_obj);
1294 (void) printf("\t\tsnapnames_zapobj = %llu\n",
1295 (u_longlong_t)ds->ds_snapnames_zapobj);
1296 (void) printf("\t\tnum_children = %llu\n",
1297 (u_longlong_t)ds->ds_num_children);
1298 (void) printf("\t\tuserrefs_obj = %llu\n",
1299 (u_longlong_t)ds->ds_userrefs_obj);
1300 (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1301 (void) printf("\t\tcreation_txg = %llu\n",
1302 (u_longlong_t)ds->ds_creation_txg);
1303 (void) printf("\t\tdeadlist_obj = %llu\n",
1304 (u_longlong_t)ds->ds_deadlist_obj);
1305 (void) printf("\t\tused_bytes = %s\n", used);
1306 (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1307 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1308 (void) printf("\t\tunique = %s\n", unique);
1309 (void) printf("\t\tfsid_guid = %llu\n",
1310 (u_longlong_t)ds->ds_fsid_guid);
1311 (void) printf("\t\tguid = %llu\n",
1312 (u_longlong_t)ds->ds_guid);
1313 (void) printf("\t\tflags = %llx\n",
1314 (u_longlong_t)ds->ds_flags);
1315 (void) printf("\t\tnext_clones_obj = %llu\n",
1316 (u_longlong_t)ds->ds_next_clones_obj);
1317 (void) printf("\t\tprops_obj = %llu\n",
1318 (u_longlong_t)ds->ds_props_obj);
1319 (void) printf("\t\tbp = %s\n", blkbuf);
1320 }
1321
1322 /* ARGSUSED */
1323 static int
1324 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1325 {
1326 char blkbuf[BP_SPRINTF_LEN];
1327
1328 if (bp->blk_birth != 0) {
1329 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1330 (void) printf("\t%s\n", blkbuf);
1331 }
1332 return (0);
1333 }
1334
1335 static void
1336 dump_bptree(objset_t *os, uint64_t obj, char *name)
1337 {
1338 char bytes[32];
1339 bptree_phys_t *bt;
1340 dmu_buf_t *db;
1341
1342 if (dump_opt['d'] < 3)
1343 return;
1344
1345 VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1346 bt = db->db_data;
1347 zdb_nicenum(bt->bt_bytes, bytes);
1348 (void) printf("\n %s: %llu datasets, %s\n",
1349 name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1350 dmu_buf_rele(db, FTAG);
1351
1352 if (dump_opt['d'] < 5)
1353 return;
1354
1355 (void) printf("\n");
1356
1357 (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1358 }
1359
1360 /* ARGSUSED */
1361 static int
1362 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1363 {
1364 char blkbuf[BP_SPRINTF_LEN];
1365
1366 ASSERT(bp->blk_birth != 0);
1367 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1368 (void) printf("\t%s\n", blkbuf);
1369 return (0);
1370 }
1371
1372 static void
1373 dump_bpobj(bpobj_t *bpo, char *name, int indent)
1374 {
1375 char bytes[32];
1376 char comp[32];
1377 char uncomp[32];
1378
1379 if (dump_opt['d'] < 3)
1380 return;
1381
1382 zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1383 if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1384 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1385 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1386 (void) printf(" %*s: object %llu, %llu local blkptrs, "
1387 "%llu subobjs, %s (%s/%s comp)\n",
1388 indent * 8, name,
1389 (u_longlong_t)bpo->bpo_object,
1390 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1391 (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1392 bytes, comp, uncomp);
1393
1394 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1395 uint64_t subobj;
1396 bpobj_t subbpo;
1397 int error;
1398 VERIFY0(dmu_read(bpo->bpo_os,
1399 bpo->bpo_phys->bpo_subobjs,
1400 i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1401 error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1402 if (error != 0) {
1403 (void) printf("ERROR %u while trying to open "
1404 "subobj id %llu\n",
1405 error, (u_longlong_t)subobj);
1406 continue;
1407 }
1408 dump_bpobj(&subbpo, "subobj", indent + 1);
1409 bpobj_close(&subbpo);
1410 }
1411 } else {
1412 (void) printf(" %*s: object %llu, %llu blkptrs, %s\n",
1413 indent * 8, name,
1414 (u_longlong_t)bpo->bpo_object,
1415 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1416 bytes);
1417 }
1418
1419 if (dump_opt['d'] < 5)
1420 return;
1421
1422
1423 if (indent == 0) {
1424 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1425 (void) printf("\n");
1426 }
1427 }
1428
1429 static void
1430 dump_deadlist(dsl_deadlist_t *dl)
1431 {
1432 dsl_deadlist_entry_t *dle;
1433 uint64_t unused;
1434 char bytes[32];
1435 char comp[32];
1436 char uncomp[32];
1437
1438 if (dump_opt['d'] < 3)
1439 return;
1440
1441 if (dl->dl_oldfmt) {
1442 dump_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1443 return;
1444 }
1445
1446 zdb_nicenum(dl->dl_phys->dl_used, bytes);
1447 zdb_nicenum(dl->dl_phys->dl_comp, comp);
1448 zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1449 (void) printf("\n Deadlist: %s (%s/%s comp)\n",
1450 bytes, comp, uncomp);
1451
1452 if (dump_opt['d'] < 4)
1453 return;
1454
1455 (void) printf("\n");
1456
1457 /* force the tree to be loaded */
1458 dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1459
1460 for (dle = avl_first(&dl->dl_tree); dle;
1461 dle = AVL_NEXT(&dl->dl_tree, dle)) {
1462 if (dump_opt['d'] >= 5) {
1463 char buf[128];
1464 (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1465 (longlong_t)dle->dle_mintxg,
1466 (longlong_t)dle->dle_bpobj.bpo_object);
1467
1468 dump_bpobj(&dle->dle_bpobj, buf, 0);
1469 } else {
1470 (void) printf("mintxg %llu -> obj %llu\n",
1471 (longlong_t)dle->dle_mintxg,
1472 (longlong_t)dle->dle_bpobj.bpo_object);
1473
1474 }
1475 }
1476 }
1477
1478 static avl_tree_t idx_tree;
1479 static avl_tree_t domain_tree;
1480 static boolean_t fuid_table_loaded;
1481 static boolean_t sa_loaded;
1482 sa_attr_type_t *sa_attr_table;
1483
1484 static void
1485 fuid_table_destroy()
1486 {
1487 if (fuid_table_loaded) {
1488 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1489 fuid_table_loaded = B_FALSE;
1490 }
1491 }
1492
1493 /*
1494 * print uid or gid information.
1495 * For normal POSIX id just the id is printed in decimal format.
1496 * For CIFS files with FUID the fuid is printed in hex followed by
1497 * the domain-rid string.
1498 */
1499 static void
1500 print_idstr(uint64_t id, const char *id_type)
1501 {
1502 if (FUID_INDEX(id)) {
1503 char *domain;
1504
1505 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1506 (void) printf("\t%s %llx [%s-%d]\n", id_type,
1507 (u_longlong_t)id, domain, (int)FUID_RID(id));
1508 } else {
1509 (void) printf("\t%s %llu\n", id_type, (u_longlong_t)id);
1510 }
1511
1512 }
1513
1514 static void
1515 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1516 {
1517 uint32_t uid_idx, gid_idx;
1518
1519 uid_idx = FUID_INDEX(uid);
1520 gid_idx = FUID_INDEX(gid);
1521
1522 /* Load domain table, if not already loaded */
1523 if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1524 uint64_t fuid_obj;
1525
1526 /* first find the fuid object. It lives in the master node */
1527 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1528 8, 1, &fuid_obj) == 0);
1529 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1530 (void) zfs_fuid_table_load(os, fuid_obj,
1531 &idx_tree, &domain_tree);
1532 fuid_table_loaded = B_TRUE;
1533 }
1534
1535 print_idstr(uid, "uid");
1536 print_idstr(gid, "gid");
1537 }
1538
1539 /*ARGSUSED*/
1540 static void
1541 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1542 {
1543 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */
1544 sa_handle_t *hdl;
1545 uint64_t xattr, rdev, gen;
1546 uint64_t uid, gid, mode, fsize, parent, links;
1547 uint64_t pflags;
1548 uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1549 time_t z_crtime, z_atime, z_mtime, z_ctime;
1550 sa_bulk_attr_t bulk[12];
1551 int idx = 0;
1552 int error;
1553
1554 if (!sa_loaded) {
1555 uint64_t sa_attrs = 0;
1556 uint64_t version;
1557
1558 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1559 8, 1, &version) == 0);
1560 if (version >= ZPL_VERSION_SA) {
1561 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1562 8, 1, &sa_attrs) == 0);
1563 }
1564 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1565 ZPL_END, &sa_attr_table)) != 0) {
1566 (void) printf("sa_setup failed errno %d, can't "
1567 "display znode contents\n", error);
1568 return;
1569 }
1570 sa_loaded = B_TRUE;
1571 }
1572
1573 if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1574 (void) printf("Failed to get handle for SA znode\n");
1575 return;
1576 }
1577
1578 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1579 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1580 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1581 &links, 8);
1582 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1583 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1584 &mode, 8);
1585 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1586 NULL, &parent, 8);
1587 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1588 &fsize, 8);
1589 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1590 acctm, 16);
1591 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1592 modtm, 16);
1593 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1594 crtm, 16);
1595 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1596 chgtm, 16);
1597 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1598 &pflags, 8);
1599
1600 if (sa_bulk_lookup(hdl, bulk, idx)) {
1601 (void) sa_handle_destroy(hdl);
1602 return;
1603 }
1604
1605 error = zfs_obj_to_path(os, object, path, sizeof (path));
1606 if (error != 0) {
1607 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1608 (u_longlong_t)object);
1609 }
1610 if (dump_opt['d'] < 3) {
1611 (void) printf("\t%s\n", path);
1612 (void) sa_handle_destroy(hdl);
1613 return;
1614 }
1615
1616 z_crtime = (time_t)crtm[0];
1617 z_atime = (time_t)acctm[0];
1618 z_mtime = (time_t)modtm[0];
1619 z_ctime = (time_t)chgtm[0];
1620
1621 (void) printf("\tpath %s\n", path);
1622 dump_uidgid(os, uid, gid);
1623 (void) printf("\tatime %s", ctime(&z_atime));
1624 (void) printf("\tmtime %s", ctime(&z_mtime));
1625 (void) printf("\tctime %s", ctime(&z_ctime));
1626 (void) printf("\tcrtime %s", ctime(&z_crtime));
1627 (void) printf("\tgen %llu\n", (u_longlong_t)gen);
1628 (void) printf("\tmode %llo\n", (u_longlong_t)mode);
1629 (void) printf("\tsize %llu\n", (u_longlong_t)fsize);
1630 (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1631 (void) printf("\tlinks %llu\n", (u_longlong_t)links);
1632 (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1633 if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1634 sizeof (uint64_t)) == 0)
1635 (void) printf("\txattr %llu\n", (u_longlong_t)xattr);
1636 if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1637 sizeof (uint64_t)) == 0)
1638 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)rdev);
1639 sa_handle_destroy(hdl);
1640 }
1641
1642 /*ARGSUSED*/
1643 static void
1644 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1645 {
1646 }
1647
1648 /*ARGSUSED*/
1649 static void
1650 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1651 {
1652 }
1653
1654 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1655 dump_none, /* unallocated */
1656 dump_zap, /* object directory */
1657 dump_uint64, /* object array */
1658 dump_none, /* packed nvlist */
1659 dump_packed_nvlist, /* packed nvlist size */
1660 dump_none, /* bplist */
1661 dump_none, /* bplist header */
1662 dump_none, /* SPA space map header */
1663 dump_none, /* SPA space map */
1664 dump_none, /* ZIL intent log */
1665 dump_dnode, /* DMU dnode */
1666 dump_dmu_objset, /* DMU objset */
1667 dump_dsl_dir, /* DSL directory */
1668 dump_zap, /* DSL directory child map */
1669 dump_zap, /* DSL dataset snap map */
1670 dump_zap, /* DSL props */
1671 dump_dsl_dataset, /* DSL dataset */
1672 dump_znode, /* ZFS znode */
1673 dump_acl, /* ZFS V0 ACL */
1674 dump_uint8, /* ZFS plain file */
1675 dump_zpldir, /* ZFS directory */
1676 dump_zap, /* ZFS master node */
1677 dump_zap, /* ZFS delete queue */
1678 dump_uint8, /* zvol object */
1679 dump_zap, /* zvol prop */
1680 dump_uint8, /* other uint8[] */
1681 dump_uint64, /* other uint64[] */
1682 dump_zap, /* other ZAP */
1683 dump_zap, /* persistent error log */
1684 dump_uint8, /* SPA history */
1685 dump_history_offsets, /* SPA history offsets */
1686 dump_zap, /* Pool properties */
1687 dump_zap, /* DSL permissions */
1688 dump_acl, /* ZFS ACL */
1689 dump_uint8, /* ZFS SYSACL */
1690 dump_none, /* FUID nvlist */
1691 dump_packed_nvlist, /* FUID nvlist size */
1692 dump_zap, /* DSL dataset next clones */
1693 dump_zap, /* DSL scrub queue */
1694 dump_zap, /* ZFS user/group used */
1695 dump_zap, /* ZFS user/group quota */
1696 dump_zap, /* snapshot refcount tags */
1697 dump_ddt_zap, /* DDT ZAP object */
1698 dump_zap, /* DDT statistics */
1699 dump_znode, /* SA object */
1700 dump_zap, /* SA Master Node */
1701 dump_sa_attrs, /* SA attribute registration */
1702 dump_sa_layouts, /* SA attribute layouts */
1703 dump_zap, /* DSL scrub translations */
1704 dump_none, /* fake dedup BP */
1705 dump_zap, /* deadlist */
1706 dump_none, /* deadlist hdr */
1707 dump_zap, /* dsl clones */
1708 dump_none, /* bpobj subobjs */
1709 dump_unknown, /* Unknown type, must be last */
1710 };
1711
1712 static void
1713 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1714 {
1715 dmu_buf_t *db = NULL;
1716 dmu_object_info_t doi;
1717 dnode_t *dn;
1718 void *bonus = NULL;
1719 size_t bsize = 0;
1720 char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1721 char bonus_size[32];
1722 char aux[50];
1723 int error;
1724
1725 if (*print_header) {
1726 (void) printf("\n%10s %3s %5s %5s %5s %5s %6s %s\n",
1727 "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1728 "%full", "type");
1729 *print_header = 0;
1730 }
1731
1732 if (object == 0) {
1733 dn = DMU_META_DNODE(os);
1734 } else {
1735 error = dmu_bonus_hold(os, object, FTAG, &db);
1736 if (error)
1737 fatal("dmu_bonus_hold(%llu) failed, errno %u",
1738 object, error);
1739 bonus = db->db_data;
1740 bsize = db->db_size;
1741 dn = DB_DNODE((dmu_buf_impl_t *)db);
1742 }
1743 dmu_object_info_from_dnode(dn, &doi);
1744
1745 zdb_nicenum(doi.doi_metadata_block_size, iblk);
1746 zdb_nicenum(doi.doi_data_block_size, dblk);
1747 zdb_nicenum(doi.doi_max_offset, lsize);
1748 zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1749 zdb_nicenum(doi.doi_bonus_size, bonus_size);
1750 (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1751 doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1752 doi.doi_max_offset);
1753
1754 aux[0] = '\0';
1755
1756 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1757 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1758 ZDB_CHECKSUM_NAME(doi.doi_checksum));
1759 }
1760
1761 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1762 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1763 ZDB_COMPRESS_NAME(doi.doi_compress));
1764 }
1765
1766 (void) printf("%10lld %3u %5s %5s %5s %5s %6s %s%s\n",
1767 (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1768 asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1769
1770 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1771 (void) printf("%10s %3s %5s %5s %5s %5s %6s %s\n",
1772 "", "", "", "", "", bonus_size, "bonus",
1773 ZDB_OT_NAME(doi.doi_bonus_type));
1774 }
1775
1776 if (verbosity >= 4) {
1777 (void) printf("\tdnode flags: %s%s%s\n",
1778 (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1779 "USED_BYTES " : "",
1780 (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1781 "USERUSED_ACCOUNTED " : "",
1782 (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1783 "SPILL_BLKPTR" : "");
1784 (void) printf("\tdnode maxblkid: %llu\n",
1785 (longlong_t)dn->dn_phys->dn_maxblkid);
1786
1787 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1788 bonus, bsize);
1789 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1790 *print_header = 1;
1791 }
1792
1793 if (verbosity >= 5)
1794 dump_indirect(dn);
1795
1796 if (verbosity >= 5) {
1797 /*
1798 * Report the list of segments that comprise the object.
1799 */
1800 uint64_t start = 0;
1801 uint64_t end;
1802 uint64_t blkfill = 1;
1803 int minlvl = 1;
1804
1805 if (dn->dn_type == DMU_OT_DNODE) {
1806 minlvl = 0;
1807 blkfill = DNODES_PER_BLOCK;
1808 }
1809
1810 for (;;) {
1811 char segsize[32];
1812 error = dnode_next_offset(dn,
1813 0, &start, minlvl, blkfill, 0);
1814 if (error)
1815 break;
1816 end = start;
1817 error = dnode_next_offset(dn,
1818 DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1819 zdb_nicenum(end - start, segsize);
1820 (void) printf("\t\tsegment [%016llx, %016llx)"
1821 " size %5s\n", (u_longlong_t)start,
1822 (u_longlong_t)end, segsize);
1823 if (error)
1824 break;
1825 start = end;
1826 }
1827 }
1828
1829 if (db != NULL)
1830 dmu_buf_rele(db, FTAG);
1831 }
1832
1833 static char *objset_types[DMU_OST_NUMTYPES] = {
1834 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1835
1836 static void
1837 dump_dir(objset_t *os)
1838 {
1839 dmu_objset_stats_t dds;
1840 uint64_t object, object_count;
1841 uint64_t refdbytes, usedobjs, scratch;
1842 char numbuf[32];
1843 char blkbuf[BP_SPRINTF_LEN + 20];
1844 char osname[MAXNAMELEN];
1845 char *type = "UNKNOWN";
1846 int verbosity = dump_opt['d'];
1847 int print_header = 1;
1848 int i, error;
1849
1850 dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1851 dmu_objset_fast_stat(os, &dds);
1852 dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1853
1854 if (dds.dds_type < DMU_OST_NUMTYPES)
1855 type = objset_types[dds.dds_type];
1856
1857 if (dds.dds_type == DMU_OST_META) {
1858 dds.dds_creation_txg = TXG_INITIAL;
1859 usedobjs = BP_GET_FILL(os->os_rootbp);
1860 refdbytes = os->os_spa->spa_dsl_pool->
1861 dp_mos_dir->dd_phys->dd_used_bytes;
1862 } else {
1863 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1864 }
1865
1866 ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
1867
1868 zdb_nicenum(refdbytes, numbuf);
1869
1870 if (verbosity >= 4) {
1871 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1872 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1873 sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1874 } else {
1875 blkbuf[0] = '\0';
1876 }
1877
1878 dmu_objset_name(os, osname);
1879
1880 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1881 "%s, %llu objects%s\n",
1882 osname, type, (u_longlong_t)dmu_objset_id(os),
1883 (u_longlong_t)dds.dds_creation_txg,
1884 numbuf, (u_longlong_t)usedobjs, blkbuf);
1885
1886 if (zopt_objects != 0) {
1887 for (i = 0; i < zopt_objects; i++)
1888 dump_object(os, zopt_object[i], verbosity,
1889 &print_header);
1890 (void) printf("\n");
1891 return;
1892 }
1893
1894 if (dump_opt['i'] != 0 || verbosity >= 2)
1895 dump_intent_log(dmu_objset_zil(os));
1896
1897 if (dmu_objset_ds(os) != NULL)
1898 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1899
1900 if (verbosity < 2)
1901 return;
1902
1903 if (BP_IS_HOLE(os->os_rootbp))
1904 return;
1905
1906 dump_object(os, 0, verbosity, &print_header);
1907 object_count = 0;
1908 if (DMU_USERUSED_DNODE(os) != NULL &&
1909 DMU_USERUSED_DNODE(os)->dn_type != 0) {
1910 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1911 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1912 }
1913
1914 object = 0;
1915 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1916 dump_object(os, object, verbosity, &print_header);
1917 object_count++;
1918 }
1919
1920 ASSERT3U(object_count, ==, usedobjs);
1921
1922 (void) printf("\n");
1923
1924 if (error != ESRCH) {
1925 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1926 abort();
1927 }
1928 }
1929
1930 static void
1931 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1932 {
1933 time_t timestamp = ub->ub_timestamp;
1934
1935 (void) printf(header ? header : "");
1936 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1937 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1938 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1939 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1940 (void) printf("\ttimestamp = %llu UTC = %s",
1941 (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1942 if (dump_opt['u'] >= 3) {
1943 char blkbuf[BP_SPRINTF_LEN];
1944 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
1945 (void) printf("\trootbp = %s\n", blkbuf);
1946 }
1947 (void) printf(footer ? footer : "");
1948 }
1949
1950 static void
1951 dump_config(spa_t *spa)
1952 {
1953 dmu_buf_t *db;
1954 size_t nvsize = 0;
1955 int error = 0;
1956
1957
1958 error = dmu_bonus_hold(spa->spa_meta_objset,
1959 spa->spa_config_object, FTAG, &db);
1960
1961 if (error == 0) {
1962 nvsize = *(uint64_t *)db->db_data;
1963 dmu_buf_rele(db, FTAG);
1964
1965 (void) printf("\nMOS Configuration:\n");
1966 dump_packed_nvlist(spa->spa_meta_objset,
1967 spa->spa_config_object, (void *)&nvsize, 1);
1968 } else {
1969 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1970 (u_longlong_t)spa->spa_config_object, error);
1971 }
1972 }
1973
1974 static void
1975 dump_cachefile(const char *cachefile)
1976 {
1977 int fd;
1978 struct stat64 statbuf;
1979 char *buf;
1980 nvlist_t *config;
1981
1982 if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1983 (void) printf("cannot open '%s': %s\n", cachefile,
1984 strerror(errno));
1985 exit(1);
1986 }
1987
1988 if (fstat64(fd, &statbuf) != 0) {
1989 (void) printf("failed to stat '%s': %s\n", cachefile,
1990 strerror(errno));
1991 exit(1);
1992 }
1993
1994 if ((buf = malloc(statbuf.st_size)) == NULL) {
1995 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1996 (u_longlong_t)statbuf.st_size);
1997 exit(1);
1998 }
1999
2000 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2001 (void) fprintf(stderr, "failed to read %llu bytes\n",
2002 (u_longlong_t)statbuf.st_size);
2003 exit(1);
2004 }
2005
2006 (void) close(fd);
2007
2008 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2009 (void) fprintf(stderr, "failed to unpack nvlist\n");
2010 exit(1);
2011 }
2012
2013 free(buf);
2014
2015 dump_nvlist(config, 0);
2016
2017 nvlist_free(config);
2018 }
2019
2020 #define ZDB_MAX_UB_HEADER_SIZE 32
2021
2022 static void
2023 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
2024 {
2025 vdev_t vd;
2026 vdev_t *vdp = &vd;
2027 char header[ZDB_MAX_UB_HEADER_SIZE];
2028
2029 vd.vdev_ashift = ashift;
2030 vdp->vdev_top = vdp;
2031
2032 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2033 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2034 uberblock_t *ub = (void *)((char *)lbl + uoff);
2035
2036 if (uberblock_verify(ub))
2037 continue;
2038 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2039 "Uberblock[%d]\n", i);
2040 dump_uberblock(ub, header, "");
2041 }
2042 }
2043
2044 static void
2045 dump_label(const char *dev)
2046 {
2047 int fd;
2048 vdev_label_t label;
2049 char *path, *buf = label.vl_vdev_phys.vp_nvlist;
2050 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2051 struct stat64 statbuf;
2052 uint64_t psize, ashift;
2053 int len = strlen(dev) + 1;
2054
2055 if (strncmp(dev, "/dev/dsk/", 9) == 0) {
2056 len++;
2057 path = malloc(len);
2058 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
2059 } else {
2060 path = strdup(dev);
2061 }
2062
2063 if ((fd = open64(path, O_RDONLY)) < 0) {
2064 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2065 free(path);
2066 exit(1);
2067 }
2068
2069 if (fstat64(fd, &statbuf) != 0) {
2070 (void) printf("failed to stat '%s': %s\n", path,
2071 strerror(errno));
2072 free(path);
2073 (void) close(fd);
2074 exit(1);
2075 }
2076
2077 if (S_ISBLK(statbuf.st_mode)) {
2078 (void) printf("cannot use '%s': character device required\n",
2079 path);
2080 free(path);
2081 (void) close(fd);
2082 exit(1);
2083 }
2084
2085 psize = statbuf.st_size;
2086 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2087
2088 for (int l = 0; l < VDEV_LABELS; l++) {
2089 nvlist_t *config = NULL;
2090
2091 (void) printf("--------------------------------------------\n");
2092 (void) printf("LABEL %d\n", l);
2093 (void) printf("--------------------------------------------\n");
2094
2095 if (pread64(fd, &label, sizeof (label),
2096 vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2097 (void) printf("failed to read label %d\n", l);
2098 continue;
2099 }
2100
2101 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2102 (void) printf("failed to unpack label %d\n", l);
2103 ashift = SPA_MINBLOCKSHIFT;
2104 } else {
2105 nvlist_t *vdev_tree = NULL;
2106
2107 dump_nvlist(config, 4);
2108 if ((nvlist_lookup_nvlist(config,
2109 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2110 (nvlist_lookup_uint64(vdev_tree,
2111 ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2112 ashift = SPA_MINBLOCKSHIFT;
2113 nvlist_free(config);
2114 }
2115 if (dump_opt['u'])
2116 dump_label_uberblocks(&label, ashift);
2117 }
2118
2119 free(path);
2120 (void) close(fd);
2121 }
2122
2123 /*ARGSUSED*/
2124 static int
2125 dump_one_dir(const char *dsname, void *arg)
2126 {
2127 int error;
2128 objset_t *os;
2129
2130 error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2131 if (error) {
2132 (void) printf("Could not open %s, error %d\n", dsname, error);
2133 return (0);
2134 }
2135 dump_dir(os);
2136 dmu_objset_disown(os, FTAG);
2137 fuid_table_destroy();
2138 sa_loaded = B_FALSE;
2139 return (0);
2140 }
2141
2142 /*
2143 * Block statistics.
2144 */
2145 #define PSIZE_HISTO_SIZE (SPA_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1)
2146 typedef struct zdb_blkstats {
2147 uint64_t zb_asize;
2148 uint64_t zb_lsize;
2149 uint64_t zb_psize;
2150 uint64_t zb_count;
2151 uint64_t zb_gangs;
2152 uint64_t zb_ditto_samevdev;
2153 uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2154 } zdb_blkstats_t;
2155
2156 /*
2157 * Extended object types to report deferred frees and dedup auto-ditto blocks.
2158 */
2159 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2160 #define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1)
2161 #define ZDB_OT_OTHER (DMU_OT_NUMTYPES + 2)
2162 #define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 3)
2163
2164 static char *zdb_ot_extname[] = {
2165 "deferred free",
2166 "dedup ditto",
2167 "other",
2168 "Total",
2169 };
2170
2171 #define ZB_TOTAL DN_MAX_LEVELS
2172
2173 typedef struct zdb_cb {
2174 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2175 uint64_t zcb_dedup_asize;
2176 uint64_t zcb_dedup_blocks;
2177 uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2178 uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2179 [BPE_PAYLOAD_SIZE];
2180 uint64_t zcb_start;
2181 uint64_t zcb_lastprint;
2182 uint64_t zcb_totalasize;
2183 uint64_t zcb_errors[256];
2184 int zcb_readfails;
2185 int zcb_haderrors;
2186 spa_t *zcb_spa;
2187 } zdb_cb_t;
2188
2189 static void
2190 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2191 dmu_object_type_t type)
2192 {
2193 uint64_t refcnt = 0;
2194
2195 ASSERT(type < ZDB_OT_TOTAL);
2196
2197 if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2198 return;
2199
2200 for (int i = 0; i < 4; i++) {
2201 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2202 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2203 int equal;
2204 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2205
2206 zb->zb_asize += BP_GET_ASIZE(bp);
2207 zb->zb_lsize += BP_GET_LSIZE(bp);
2208 zb->zb_psize += BP_GET_PSIZE(bp);
2209 zb->zb_count++;
2210 zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++;
2211
2212 zb->zb_gangs += BP_COUNT_GANG(bp);
2213
2214 switch (BP_GET_NDVAS(bp)) {
2215 case 2:
2216 if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2217 DVA_GET_VDEV(&bp->blk_dva[1]))
2218 zb->zb_ditto_samevdev++;
2219 break;
2220 case 3:
2221 equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2222 DVA_GET_VDEV(&bp->blk_dva[1])) +
2223 (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2224 DVA_GET_VDEV(&bp->blk_dva[2])) +
2225 (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2226 DVA_GET_VDEV(&bp->blk_dva[2]));
2227 if (equal != 0)
2228 zb->zb_ditto_samevdev++;
2229 break;
2230 }
2231
2232 }
2233
2234 if (BP_IS_EMBEDDED(bp)) {
2235 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2236 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2237 [BPE_GET_PSIZE(bp)]++;
2238 return;
2239 }
2240
2241 if (dump_opt['L'])
2242 return;
2243
2244 if (BP_GET_DEDUP(bp)) {
2245 ddt_t *ddt;
2246 ddt_entry_t *dde;
2247
2248 ddt = ddt_select(zcb->zcb_spa, bp);
2249 ddt_enter(ddt);
2250 dde = ddt_lookup(ddt, bp, B_FALSE);
2251
2252 if (dde == NULL) {
2253 refcnt = 0;
2254 } else {
2255 ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2256 ddt_phys_decref(ddp);
2257 refcnt = ddp->ddp_refcnt;
2258 if (ddt_phys_total_refcnt(dde) == 0)
2259 ddt_remove(ddt, dde);
2260 }
2261 ddt_exit(ddt);
2262 }
2263
2264 VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2265 refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2266 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2267 }
2268
2269 static void
2270 zdb_blkptr_done(zio_t *zio)
2271 {
2272 spa_t *spa = zio->io_spa;
2273 blkptr_t *bp = zio->io_bp;
2274 int ioerr = zio->io_error;
2275 zdb_cb_t *zcb = zio->io_private;
2276 zbookmark_phys_t *zb = &zio->io_bookmark;
2277
2278 zio_data_buf_free(zio->io_data, zio->io_size);
2279
2280 mutex_enter(&spa->spa_scrub_lock);
2281 spa->spa_scrub_inflight--;
2282 cv_broadcast(&spa->spa_scrub_io_cv);
2283
2284 if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2285 char blkbuf[BP_SPRINTF_LEN];
2286
2287 zcb->zcb_haderrors = 1;
2288 zcb->zcb_errors[ioerr]++;
2289
2290 if (dump_opt['b'] >= 2)
2291 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2292 else
2293 blkbuf[0] = '\0';
2294
2295 (void) printf("zdb_blkptr_cb: "
2296 "Got error %d reading "
2297 "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2298 ioerr,
2299 (u_longlong_t)zb->zb_objset,
2300 (u_longlong_t)zb->zb_object,
2301 (u_longlong_t)zb->zb_level,
2302 (u_longlong_t)zb->zb_blkid,
2303 blkbuf);
2304 }
2305 mutex_exit(&spa->spa_scrub_lock);
2306 }
2307
2308 static int
2309 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2310 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2311 {
2312 zdb_cb_t *zcb = arg;
2313 dmu_object_type_t type;
2314 boolean_t is_metadata;
2315
2316 if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2317 char blkbuf[BP_SPRINTF_LEN];
2318 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2319 (void) printf("objset %llu object %llu "
2320 "level %lld offset 0x%llx %s\n",
2321 (u_longlong_t)zb->zb_objset,
2322 (u_longlong_t)zb->zb_object,
2323 (longlong_t)zb->zb_level,
2324 (u_longlong_t)blkid2offset(dnp, bp, zb),
2325 blkbuf);
2326 }
2327
2328 if (BP_IS_HOLE(bp))
2329 return (0);
2330
2331 type = BP_GET_TYPE(bp);
2332
2333 zdb_count_block(zcb, zilog, bp,
2334 (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2335
2336 is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2337
2338 if (!BP_IS_EMBEDDED(bp) &&
2339 (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2340 size_t size = BP_GET_PSIZE(bp);
2341 void *data = zio_data_buf_alloc(size);
2342 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2343
2344 /* If it's an intent log block, failure is expected. */
2345 if (zb->zb_level == ZB_ZIL_LEVEL)
2346 flags |= ZIO_FLAG_SPECULATIVE;
2347
2348 mutex_enter(&spa->spa_scrub_lock);
2349 while (spa->spa_scrub_inflight > max_inflight)
2350 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2351 spa->spa_scrub_inflight++;
2352 mutex_exit(&spa->spa_scrub_lock);
2353
2354 zio_nowait(zio_read(NULL, spa, bp, data, size,
2355 zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2356 }
2357
2358 zcb->zcb_readfails = 0;
2359
2360 /* only call gethrtime() every 100 blocks */
2361 static int iters;
2362 if (++iters > 100)
2363 iters = 0;
2364 else
2365 return (0);
2366
2367 if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2368 uint64_t now = gethrtime();
2369 char buf[10];
2370 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2371 int kb_per_sec =
2372 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2373 int sec_remaining =
2374 (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2375
2376 zfs_nicenum(bytes, buf, sizeof (buf));
2377 (void) fprintf(stderr,
2378 "\r%5s completed (%4dMB/s) "
2379 "estimated time remaining: %uhr %02umin %02usec ",
2380 buf, kb_per_sec / 1024,
2381 sec_remaining / 60 / 60,
2382 sec_remaining / 60 % 60,
2383 sec_remaining % 60);
2384
2385 zcb->zcb_lastprint = now;
2386 }
2387
2388 return (0);
2389 }
2390
2391 static void
2392 zdb_leak(void *arg, uint64_t start, uint64_t size)
2393 {
2394 vdev_t *vd = arg;
2395
2396 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2397 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2398 }
2399
2400 static metaslab_ops_t zdb_metaslab_ops = {
2401 NULL /* alloc */
2402 };
2403
2404 static void
2405 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2406 {
2407 ddt_bookmark_t ddb = { 0 };
2408 ddt_entry_t dde;
2409 int error;
2410
2411 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2412 blkptr_t blk;
2413 ddt_phys_t *ddp = dde.dde_phys;
2414
2415 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2416 return;
2417
2418 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2419
2420 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2421 if (ddp->ddp_phys_birth == 0)
2422 continue;
2423 ddt_bp_create(ddb.ddb_checksum,
2424 &dde.dde_key, ddp, &blk);
2425 if (p == DDT_PHYS_DITTO) {
2426 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2427 } else {
2428 zcb->zcb_dedup_asize +=
2429 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2430 zcb->zcb_dedup_blocks++;
2431 }
2432 }
2433 if (!dump_opt['L']) {
2434 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2435 ddt_enter(ddt);
2436 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2437 ddt_exit(ddt);
2438 }
2439 }
2440
2441 ASSERT(error == ENOENT);
2442 }
2443
2444 static void
2445 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2446 {
2447 zcb->zcb_spa = spa;
2448
2449 if (!dump_opt['L']) {
2450 vdev_t *rvd = spa->spa_root_vdev;
2451 for (uint64_t c = 0; c < rvd->vdev_children; c++) {
2452 vdev_t *vd = rvd->vdev_child[c];
2453 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) {
2454 metaslab_t *msp = vd->vdev_ms[m];
2455 mutex_enter(&msp->ms_lock);
2456 metaslab_unload(msp);
2457
2458 /*
2459 * For leak detection, we overload the metaslab
2460 * ms_tree to contain allocated segments
2461 * instead of free segments. As a result,
2462 * we can't use the normal metaslab_load/unload
2463 * interfaces.
2464 */
2465 if (msp->ms_sm != NULL) {
2466 (void) fprintf(stderr,
2467 "\rloading space map for "
2468 "vdev %llu of %llu, "
2469 "metaslab %llu of %llu ...",
2470 (longlong_t)c,
2471 (longlong_t)rvd->vdev_children,
2472 (longlong_t)m,
2473 (longlong_t)vd->vdev_ms_count);
2474
2475 msp->ms_ops = &zdb_metaslab_ops;
2476
2477 /*
2478 * We don't want to spend the CPU
2479 * manipulating the size-ordered
2480 * tree, so clear the range_tree
2481 * ops.
2482 */
2483 msp->ms_tree->rt_ops = NULL;
2484 VERIFY0(space_map_load(msp->ms_sm,
2485 msp->ms_tree, SM_ALLOC));
2486 msp->ms_loaded = B_TRUE;
2487 }
2488 mutex_exit(&msp->ms_lock);
2489 }
2490 }
2491 (void) fprintf(stderr, "\n");
2492 }
2493
2494 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2495
2496 zdb_ddt_leak_init(spa, zcb);
2497
2498 spa_config_exit(spa, SCL_CONFIG, FTAG);
2499 }
2500
2501 static void
2502 zdb_leak_fini(spa_t *spa)
2503 {
2504 if (!dump_opt['L']) {
2505 vdev_t *rvd = spa->spa_root_vdev;
2506 for (int c = 0; c < rvd->vdev_children; c++) {
2507 vdev_t *vd = rvd->vdev_child[c];
2508 for (int m = 0; m < vd->vdev_ms_count; m++) {
2509 metaslab_t *msp = vd->vdev_ms[m];
2510 mutex_enter(&msp->ms_lock);
2511
2512 /*
2513 * The ms_tree has been overloaded to
2514 * contain allocated segments. Now that we
2515 * finished traversing all blocks, any
2516 * block that remains in the ms_tree
2517 * represents an allocated block that we
2518 * did not claim during the traversal.
2519 * Claimed blocks would have been removed
2520 * from the ms_tree.
2521 */
2522 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2523 msp->ms_loaded = B_FALSE;
2524
2525 mutex_exit(&msp->ms_lock);
2526 }
2527 }
2528 }
2529 }
2530
2531 /* ARGSUSED */
2532 static int
2533 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2534 {
2535 zdb_cb_t *zcb = arg;
2536
2537 if (dump_opt['b'] >= 5) {
2538 char blkbuf[BP_SPRINTF_LEN];
2539 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2540 (void) printf("[%s] %s\n",
2541 "deferred free", blkbuf);
2542 }
2543 zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2544 return (0);
2545 }
2546
2547 static int
2548 dump_block_stats(spa_t *spa)
2549 {
2550 zdb_cb_t zcb = { 0 };
2551 zdb_blkstats_t *zb, *tzb;
2552 uint64_t norm_alloc, norm_space, total_alloc, total_found;
2553 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2554 boolean_t leaks = B_FALSE;
2555
2556 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2557 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2558 (dump_opt['c'] == 1) ? "metadata " : "",
2559 dump_opt['c'] ? "checksums " : "",
2560 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2561 !dump_opt['L'] ? "nothing leaked " : "");
2562
2563 /*
2564 * Load all space maps as SM_ALLOC maps, then traverse the pool
2565 * claiming each block we discover. If the pool is perfectly
2566 * consistent, the space maps will be empty when we're done.
2567 * Anything left over is a leak; any block we can't claim (because
2568 * it's not part of any space map) is a double allocation,
2569 * reference to a freed block, or an unclaimed log block.
2570 */
2571 zdb_leak_init(spa, &zcb);
2572
2573 /*
2574 * If there's a deferred-free bplist, process that first.
2575 */
2576 (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2577 count_block_cb, &zcb, NULL);
2578 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2579 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2580 count_block_cb, &zcb, NULL);
2581 }
2582 if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2583 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2584 spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2585 &zcb, NULL));
2586 }
2587
2588 if (dump_opt['c'] > 1)
2589 flags |= TRAVERSE_PREFETCH_DATA;
2590
2591 zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2592 zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2593 zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2594
2595 /*
2596 * If we've traversed the data blocks then we need to wait for those
2597 * I/Os to complete. We leverage "The Godfather" zio to wait on
2598 * all async I/Os to complete.
2599 */
2600 if (dump_opt['c']) {
2601 for (int i = 0; i < max_ncpus; i++) {
2602 (void) zio_wait(spa->spa_async_zio_root[i]);
2603 spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
2604 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2605 ZIO_FLAG_GODFATHER);
2606 }
2607 }
2608
2609 if (zcb.zcb_haderrors) {
2610 (void) printf("\nError counts:\n\n");
2611 (void) printf("\t%5s %s\n", "errno", "count");
2612 for (int e = 0; e < 256; e++) {
2613 if (zcb.zcb_errors[e] != 0) {
2614 (void) printf("\t%5d %llu\n",
2615 e, (u_longlong_t)zcb.zcb_errors[e]);
2616 }
2617 }
2618 }
2619
2620 /*
2621 * Report any leaked segments.
2622 */
2623 zdb_leak_fini(spa);
2624
2625 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2626
2627 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2628 norm_space = metaslab_class_get_space(spa_normal_class(spa));
2629
2630 total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2631 total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2632
2633 if (total_found == total_alloc) {
2634 if (!dump_opt['L'])
2635 (void) printf("\n\tNo leaks (block sum matches space"
2636 " maps exactly)\n");
2637 } else {
2638 (void) printf("block traversal size %llu != alloc %llu "
2639 "(%s %lld)\n",
2640 (u_longlong_t)total_found,
2641 (u_longlong_t)total_alloc,
2642 (dump_opt['L']) ? "unreachable" : "leaked",
2643 (longlong_t)(total_alloc - total_found));
2644 leaks = B_TRUE;
2645 }
2646
2647 if (tzb->zb_count == 0)
2648 return (2);
2649
2650 (void) printf("\n");
2651 (void) printf("\tbp count: %10llu\n",
2652 (u_longlong_t)tzb->zb_count);
2653 (void) printf("\tganged count: %10llu\n",
2654 (longlong_t)tzb->zb_gangs);
2655 (void) printf("\tbp logical: %10llu avg: %6llu\n",
2656 (u_longlong_t)tzb->zb_lsize,
2657 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2658 (void) printf("\tbp physical: %10llu avg:"
2659 " %6llu compression: %6.2f\n",
2660 (u_longlong_t)tzb->zb_psize,
2661 (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2662 (double)tzb->zb_lsize / tzb->zb_psize);
2663 (void) printf("\tbp allocated: %10llu avg:"
2664 " %6llu compression: %6.2f\n",
2665 (u_longlong_t)tzb->zb_asize,
2666 (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2667 (double)tzb->zb_lsize / tzb->zb_asize);
2668 (void) printf("\tbp deduped: %10llu ref>1:"
2669 " %6llu deduplication: %6.2f\n",
2670 (u_longlong_t)zcb.zcb_dedup_asize,
2671 (u_longlong_t)zcb.zcb_dedup_blocks,
2672 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2673 (void) printf("\tSPA allocated: %10llu used: %5.2f%%\n",
2674 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2675
2676 for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2677 if (zcb.zcb_embedded_blocks[i] == 0)
2678 continue;
2679 (void) printf("\n");
2680 (void) printf("\tadditional, non-pointer bps of type %u: "
2681 "%10llu\n",
2682 i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2683
2684 if (dump_opt['b'] >= 3) {
2685 (void) printf("\t number of (compressed) bytes: "
2686 "number of bps\n");
2687 dump_histogram(zcb.zcb_embedded_histogram[i],
2688 sizeof (zcb.zcb_embedded_histogram[i]) /
2689 sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
2690 }
2691 }
2692
2693 if (tzb->zb_ditto_samevdev != 0) {
2694 (void) printf("\tDittoed blocks on same vdev: %llu\n",
2695 (longlong_t)tzb->zb_ditto_samevdev);
2696 }
2697
2698 if (dump_opt['b'] >= 2) {
2699 int l, t, level;
2700 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2701 "\t avg\t comp\t%%Total\tType\n");
2702
2703 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2704 char csize[32], lsize[32], psize[32], asize[32];
2705 char avg[32], gang[32];
2706 char *typename;
2707
2708 if (t < DMU_OT_NUMTYPES)
2709 typename = dmu_ot[t].ot_name;
2710 else
2711 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2712
2713 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2714 (void) printf("%6s\t%5s\t%5s\t%5s"
2715 "\t%5s\t%5s\t%6s\t%s\n",
2716 "-",
2717 "-",
2718 "-",
2719 "-",
2720 "-",
2721 "-",
2722 "-",
2723 typename);
2724 continue;
2725 }
2726
2727 for (l = ZB_TOTAL - 1; l >= -1; l--) {
2728 level = (l == -1 ? ZB_TOTAL : l);
2729 zb = &zcb.zcb_type[level][t];
2730
2731 if (zb->zb_asize == 0)
2732 continue;
2733
2734 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2735 continue;
2736
2737 if (level == 0 && zb->zb_asize ==
2738 zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2739 continue;
2740
2741 zdb_nicenum(zb->zb_count, csize);
2742 zdb_nicenum(zb->zb_lsize, lsize);
2743 zdb_nicenum(zb->zb_psize, psize);
2744 zdb_nicenum(zb->zb_asize, asize);
2745 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2746 zdb_nicenum(zb->zb_gangs, gang);
2747
2748 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2749 "\t%5.2f\t%6.2f\t",
2750 csize, lsize, psize, asize, avg,
2751 (double)zb->zb_lsize / zb->zb_psize,
2752 100.0 * zb->zb_asize / tzb->zb_asize);
2753
2754 if (level == ZB_TOTAL)
2755 (void) printf("%s\n", typename);
2756 else
2757 (void) printf(" L%d %s\n",
2758 level, typename);
2759
2760 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2761 (void) printf("\t number of ganged "
2762 "blocks: %s\n", gang);
2763 }
2764
2765 if (dump_opt['b'] >= 4) {
2766 (void) printf("psize "
2767 "(in 512-byte sectors): "
2768 "number of blocks\n");
2769 dump_histogram(zb->zb_psize_histogram,
2770 PSIZE_HISTO_SIZE, 0);
2771 }
2772 }
2773 }
2774 }
2775
2776 (void) printf("\n");
2777
2778 if (leaks)
2779 return (2);
2780
2781 if (zcb.zcb_haderrors)
2782 return (3);
2783
2784 return (0);
2785 }
2786
2787 typedef struct zdb_ddt_entry {
2788 ddt_key_t zdde_key;
2789 uint64_t zdde_ref_blocks;
2790 uint64_t zdde_ref_lsize;
2791 uint64_t zdde_ref_psize;
2792 uint64_t zdde_ref_dsize;
2793 avl_node_t zdde_node;
2794 } zdb_ddt_entry_t;
2795
2796 /* ARGSUSED */
2797 static int
2798 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2799 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2800 {
2801 avl_tree_t *t = arg;
2802 avl_index_t where;
2803 zdb_ddt_entry_t *zdde, zdde_search;
2804
2805 if (BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
2806 return (0);
2807
2808 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2809 (void) printf("traversing objset %llu, %llu objects, "
2810 "%lu blocks so far\n",
2811 (u_longlong_t)zb->zb_objset,
2812 (u_longlong_t)BP_GET_FILL(bp),
2813 avl_numnodes(t));
2814 }
2815
2816 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2817 BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2818 return (0);
2819
2820 ddt_key_fill(&zdde_search.zdde_key, bp);
2821
2822 zdde = avl_find(t, &zdde_search, &where);
2823
2824 if (zdde == NULL) {
2825 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2826 zdde->zdde_key = zdde_search.zdde_key;
2827 avl_insert(t, zdde, where);
2828 }
2829
2830 zdde->zdde_ref_blocks += 1;
2831 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2832 zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2833 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2834
2835 return (0);
2836 }
2837
2838 static void
2839 dump_simulated_ddt(spa_t *spa)
2840 {
2841 avl_tree_t t;
2842 void *cookie = NULL;
2843 zdb_ddt_entry_t *zdde;
2844 ddt_histogram_t ddh_total = { 0 };
2845 ddt_stat_t dds_total = { 0 };
2846
2847 avl_create(&t, ddt_entry_compare,
2848 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2849
2850 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2851
2852 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2853 zdb_ddt_add_cb, &t);
2854
2855 spa_config_exit(spa, SCL_CONFIG, FTAG);
2856
2857 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2858 ddt_stat_t dds;
2859 uint64_t refcnt = zdde->zdde_ref_blocks;
2860 ASSERT(refcnt != 0);
2861
2862 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2863 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2864 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2865 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2866
2867 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2868 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2869 dds.dds_ref_psize = zdde->zdde_ref_psize;
2870 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2871
2872 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
2873 &dds, 0);
2874
2875 umem_free(zdde, sizeof (*zdde));
2876 }
2877
2878 avl_destroy(&t);
2879
2880 ddt_histogram_stat(&dds_total, &ddh_total);
2881
2882 (void) printf("Simulated DDT histogram:\n");
2883
2884 zpool_dump_ddt(&dds_total, &ddh_total);
2885
2886 dump_dedup_ratio(&dds_total);
2887 }
2888
2889 static void
2890 dump_zpool(spa_t *spa)
2891 {
2892 dsl_pool_t *dp = spa_get_dsl(spa);
2893 int rc = 0;
2894
2895 if (dump_opt['S']) {
2896 dump_simulated_ddt(spa);
2897 return;
2898 }
2899
2900 if (!dump_opt['e'] && dump_opt['C'] > 1) {
2901 (void) printf("\nCached configuration:\n");
2902 dump_nvlist(spa->spa_config, 8);
2903 }
2904
2905 if (dump_opt['C'])
2906 dump_config(spa);
2907
2908 if (dump_opt['u'])
2909 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2910
2911 if (dump_opt['D'])
2912 dump_all_ddts(spa);
2913
2914 if (dump_opt['d'] > 2 || dump_opt['m'])
2915 dump_metaslabs(spa);
2916 if (dump_opt['M'])
2917 dump_metaslab_groups(spa);
2918
2919 if (dump_opt['d'] || dump_opt['i']) {
2920 dump_dir(dp->dp_meta_objset);
2921 if (dump_opt['d'] >= 3) {
2922 dump_bpobj(&spa->spa_deferred_bpobj,
2923 "Deferred frees", 0);
2924 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2925 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2926 "Pool snapshot frees", 0);
2927 }
2928
2929 if (spa_feature_is_active(spa,
2930 SPA_FEATURE_ASYNC_DESTROY)) {
2931 dump_bptree(spa->spa_meta_objset,
2932 spa->spa_dsl_pool->dp_bptree_obj,
2933 "Pool dataset frees");
2934 }
2935 dump_dtl(spa->spa_root_vdev, 0);
2936 }
2937 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2938 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2939 }
2940 if (dump_opt['b'] || dump_opt['c'])
2941 rc = dump_block_stats(spa);
2942
2943 if (rc == 0)
2944 rc = verify_spacemap_refcounts(spa);
2945
2946 if (dump_opt['s'])
2947 show_pool_stats(spa);
2948
2949 if (dump_opt['h'])
2950 dump_history(spa);
2951
2952 if (rc != 0)
2953 exit(rc);
2954 }
2955
2956 #define ZDB_FLAG_CHECKSUM 0x0001
2957 #define ZDB_FLAG_DECOMPRESS 0x0002
2958 #define ZDB_FLAG_BSWAP 0x0004
2959 #define ZDB_FLAG_GBH 0x0008
2960 #define ZDB_FLAG_INDIRECT 0x0010
2961 #define ZDB_FLAG_PHYS 0x0020
2962 #define ZDB_FLAG_RAW 0x0040
2963 #define ZDB_FLAG_PRINT_BLKPTR 0x0080
2964
2965 int flagbits[256];
2966
2967 static void
2968 zdb_print_blkptr(blkptr_t *bp, int flags)
2969 {
2970 char blkbuf[BP_SPRINTF_LEN];
2971
2972 if (flags & ZDB_FLAG_BSWAP)
2973 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2974
2975 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2976 (void) printf("%s\n", blkbuf);
2977 }
2978
2979 static void
2980 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2981 {
2982 int i;
2983
2984 for (i = 0; i < nbps; i++)
2985 zdb_print_blkptr(&bp[i], flags);
2986 }
2987
2988 static void
2989 zdb_dump_gbh(void *buf, int flags)
2990 {
2991 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2992 }
2993
2994 static void
2995 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2996 {
2997 if (flags & ZDB_FLAG_BSWAP)
2998 byteswap_uint64_array(buf, size);
2999 (void) write(1, buf, size);
3000 }
3001
3002 static void
3003 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3004 {
3005 uint64_t *d = (uint64_t *)buf;
3006 int nwords = size / sizeof (uint64_t);
3007 int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3008 int i, j;
3009 char *hdr, *c;
3010
3011
3012 if (do_bswap)
3013 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8";
3014 else
3015 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f";
3016
3017 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr);
3018
3019 for (i = 0; i < nwords; i += 2) {
3020 (void) printf("%06llx: %016llx %016llx ",
3021 (u_longlong_t)(i * sizeof (uint64_t)),
3022 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3023 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3024
3025 c = (char *)&d[i];
3026 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3027 (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3028 (void) printf("\n");
3029 }
3030 }
3031
3032 /*
3033 * There are two acceptable formats:
3034 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a
3035 * child[.child]* - For example: 0.1.1
3036 *
3037 * The second form can be used to specify arbitrary vdevs anywhere
3038 * in the heirarchy. For example, in a pool with a mirror of
3039 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3040 */
3041 static vdev_t *
3042 zdb_vdev_lookup(vdev_t *vdev, char *path)
3043 {
3044 char *s, *p, *q;
3045 int i;
3046
3047 if (vdev == NULL)
3048 return (NULL);
3049
3050 /* First, assume the x.x.x.x format */
3051 i = (int)strtoul(path, &s, 10);
3052 if (s == path || (s && *s != '.' && *s != '\0'))
3053 goto name;
3054 if (i < 0 || i >= vdev->vdev_children)
3055 return (NULL);
3056
3057 vdev = vdev->vdev_child[i];
3058 if (*s == '\0')
3059 return (vdev);
3060 return (zdb_vdev_lookup(vdev, s+1));
3061
3062 name:
3063 for (i = 0; i < vdev->vdev_children; i++) {
3064 vdev_t *vc = vdev->vdev_child[i];
3065
3066 if (vc->vdev_path == NULL) {
3067 vc = zdb_vdev_lookup(vc, path);
3068 if (vc == NULL)
3069 continue;
3070 else
3071 return (vc);
3072 }
3073
3074 p = strrchr(vc->vdev_path, '/');
3075 p = p ? p + 1 : vc->vdev_path;
3076 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3077
3078 if (strcmp(vc->vdev_path, path) == 0)
3079 return (vc);
3080 if (strcmp(p, path) == 0)
3081 return (vc);
3082 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3083 return (vc);
3084 }
3085
3086 return (NULL);
3087 }
3088
3089 /*
3090 * Read a block from a pool and print it out. The syntax of the
3091 * block descriptor is:
3092 *
3093 * pool:vdev_specifier:offset:size[:flags]
3094 *
3095 * pool - The name of the pool you wish to read from
3096 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3097 * offset - offset, in hex, in bytes
3098 * size - Amount of data to read, in hex, in bytes
3099 * flags - A string of characters specifying options
3100 * b: Decode a blkptr at given offset within block
3101 * *c: Calculate and display checksums
3102 * d: Decompress data before dumping
3103 * e: Byteswap data before dumping
3104 * g: Display data as a gang block header
3105 * i: Display as an indirect block
3106 * p: Do I/O to physical offset
3107 * r: Dump raw data to stdout
3108 *
3109 * * = not yet implemented
3110 */
3111 static void
3112 zdb_read_block(char *thing, spa_t *spa)
3113 {
3114 blkptr_t blk, *bp = &blk;
3115 dva_t *dva = bp->blk_dva;
3116 int flags = 0;
3117 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3118 zio_t *zio;
3119 vdev_t *vd;
3120 void *pbuf, *lbuf, *buf;
3121 char *s, *p, *dup, *vdev, *flagstr;
3122 int i, error;
3123
3124 dup = strdup(thing);
3125 s = strtok(dup, ":");
3126 vdev = s ? s : "";
3127 s = strtok(NULL, ":");
3128 offset = strtoull(s ? s : "", NULL, 16);
3129 s = strtok(NULL, ":");
3130 size = strtoull(s ? s : "", NULL, 16);
3131 s = strtok(NULL, ":");
3132 flagstr = s ? s : "";
3133
3134 s = NULL;
3135 if (size == 0)
3136 s = "size must not be zero";
3137 if (!IS_P2ALIGNED(size, DEV_BSIZE))
3138 s = "size must be a multiple of sector size";
3139 if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3140 s = "offset must be a multiple of sector size";
3141 if (s) {
3142 (void) printf("Invalid block specifier: %s - %s\n", thing, s);
3143 free(dup);
3144 return;
3145 }
3146
3147 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3148 for (i = 0; flagstr[i]; i++) {
3149 int bit = flagbits[(uchar_t)flagstr[i]];
3150
3151 if (bit == 0) {
3152 (void) printf("***Invalid flag: %c\n",
3153 flagstr[i]);
3154 continue;
3155 }
3156 flags |= bit;
3157
3158 /* If it's not something with an argument, keep going */
3159 if ((bit & (ZDB_FLAG_CHECKSUM |
3160 ZDB_FLAG_PRINT_BLKPTR)) == 0)
3161 continue;
3162
3163 p = &flagstr[i + 1];
3164 if (bit == ZDB_FLAG_PRINT_BLKPTR)
3165 blkptr_offset = strtoull(p, &p, 16);
3166 if (*p != ':' && *p != '\0') {
3167 (void) printf("***Invalid flag arg: '%s'\n", s);
3168 free(dup);
3169 return;
3170 }
3171 }
3172 }
3173
3174 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3175 if (vd == NULL) {
3176 (void) printf("***Invalid vdev: %s\n", vdev);
3177 free(dup);
3178 return;
3179 } else {
3180 if (vd->vdev_path)
3181 (void) fprintf(stderr, "Found vdev: %s\n",
3182 vd->vdev_path);
3183 else
3184 (void) fprintf(stderr, "Found vdev type: %s\n",
3185 vd->vdev_ops->vdev_op_type);
3186 }
3187
3188 psize = size;
3189 lsize = size;
3190
3191 pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3192 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3193
3194 BP_ZERO(bp);
3195
3196 DVA_SET_VDEV(&dva[0], vd->vdev_id);
3197 DVA_SET_OFFSET(&dva[0], offset);
3198 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3199 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3200
3201 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3202
3203 BP_SET_LSIZE(bp, lsize);
3204 BP_SET_PSIZE(bp, psize);
3205 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3206 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3207 BP_SET_TYPE(bp, DMU_OT_NONE);
3208 BP_SET_LEVEL(bp, 0);
3209 BP_SET_DEDUP(bp, 0);
3210 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3211
3212 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3213 zio = zio_root(spa, NULL, NULL, 0);
3214
3215 if (vd == vd->vdev_top) {
3216 /*
3217 * Treat this as a normal block read.
3218 */
3219 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3220 ZIO_PRIORITY_SYNC_READ,
3221 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3222 } else {
3223 /*
3224 * Treat this as a vdev child I/O.
3225 */
3226 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3227 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3228 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3229 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3230 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3231 }
3232
3233 error = zio_wait(zio);
3234 spa_config_exit(spa, SCL_STATE, FTAG);
3235
3236 if (error) {
3237 (void) printf("Read of %s failed, error: %d\n", thing, error);
3238 goto out;
3239 }
3240
3241 if (flags & ZDB_FLAG_DECOMPRESS) {
3242 /*
3243 * We don't know how the data was compressed, so just try
3244 * every decompress function at every inflated blocksize.
3245 */
3246 enum zio_compress c;
3247 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3248 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3249
3250 bcopy(pbuf, pbuf2, psize);
3251
3252 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3253 SPA_MAXBLOCKSIZE - psize) == 0);
3254
3255 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3256 SPA_MAXBLOCKSIZE - psize) == 0);
3257
3258 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3259 lsize -= SPA_MINBLOCKSIZE) {
3260 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3261 if (zio_decompress_data(c, pbuf, lbuf,
3262 psize, lsize) == 0 &&
3263 zio_decompress_data(c, pbuf2, lbuf2,
3264 psize, lsize) == 0 &&
3265 bcmp(lbuf, lbuf2, lsize) == 0)
3266 break;
3267 }
3268 if (c != ZIO_COMPRESS_FUNCTIONS)
3269 break;
3270 lsize -= SPA_MINBLOCKSIZE;
3271 }
3272
3273 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3274 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3275
3276 if (lsize <= psize) {
3277 (void) printf("Decompress of %s failed\n", thing);
3278 goto out;
3279 }
3280 buf = lbuf;
3281 size = lsize;
3282 } else {
3283 buf = pbuf;
3284 size = psize;
3285 }
3286
3287 if (flags & ZDB_FLAG_PRINT_BLKPTR)
3288 zdb_print_blkptr((blkptr_t *)(void *)
3289 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3290 else if (flags & ZDB_FLAG_RAW)
3291 zdb_dump_block_raw(buf, size, flags);
3292 else if (flags & ZDB_FLAG_INDIRECT)
3293 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3294 flags);
3295 else if (flags & ZDB_FLAG_GBH)
3296 zdb_dump_gbh(buf, flags);
3297 else
3298 zdb_dump_block(thing, buf, size, flags);
3299
3300 out:
3301 umem_free(pbuf, SPA_MAXBLOCKSIZE);
3302 umem_free(lbuf, SPA_MAXBLOCKSIZE);
3303 free(dup);
3304 }
3305
3306 static boolean_t
3307 pool_match(nvlist_t *cfg, char *tgt)
3308 {
3309 uint64_t v, guid = strtoull(tgt, NULL, 0);
3310 char *s;
3311
3312 if (guid != 0) {
3313 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3314 return (v == guid);
3315 } else {
3316 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3317 return (strcmp(s, tgt) == 0);
3318 }
3319 return (B_FALSE);
3320 }
3321
3322 static char *
3323 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3324 {
3325 nvlist_t *pools;
3326 nvlist_t *match = NULL;
3327 char *name = NULL;
3328 char *sepp = NULL;
3329 char sep;
3330 int count = 0;
3331 importargs_t args = { 0 };
3332
3333 args.paths = dirc;
3334 args.path = dirv;
3335 args.can_be_active = B_TRUE;
3336
3337 if ((sepp = strpbrk(*target, "/@")) != NULL) {
3338 sep = *sepp;
3339 *sepp = '\0';
3340 }
3341
3342 pools = zpool_search_import(g_zfs, &args);
3343
3344 if (pools != NULL) {
3345 nvpair_t *elem = NULL;
3346 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3347 verify(nvpair_value_nvlist(elem, configp) == 0);
3348 if (pool_match(*configp, *target)) {
3349 count++;
3350 if (match != NULL) {
3351 /* print previously found config */
3352 if (name != NULL) {
3353 (void) printf("%s\n", name);
3354 dump_nvlist(match, 8);
3355 name = NULL;
3356 }
3357 (void) printf("%s\n",
3358 nvpair_name(elem));
3359 dump_nvlist(*configp, 8);
3360 } else {
3361 match = *configp;
3362 name = nvpair_name(elem);
3363 }
3364 }
3365 }
3366 }
3367 if (count > 1)
3368 (void) fatal("\tMatched %d pools - use pool GUID "
3369 "instead of pool name or \n"
3370 "\tpool name part of a dataset name to select pool", count);
3371
3372 if (sepp)
3373 *sepp = sep;
3374 /*
3375 * If pool GUID was specified for pool id, replace it with pool name
3376 */
3377 if (name && (strstr(*target, name) != *target)) {
3378 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3379
3380 *target = umem_alloc(sz, UMEM_NOFAIL);
3381 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3382 }
3383
3384 *configp = name ? match : NULL;
3385
3386 return (name);
3387 }
3388
3389 int
3390 main(int argc, char **argv)
3391 {
3392 int i, c;
3393 struct rlimit rl = { 1024, 1024 };
3394 spa_t *spa = NULL;
3395 objset_t *os = NULL;
3396 int dump_all = 1;
3397 int verbose = 0;
3398 int error = 0;
3399 char **searchdirs = NULL;
3400 int nsearch = 0;
3401 char *target;
3402 nvlist_t *policy = NULL;
3403 uint64_t max_txg = UINT64_MAX;
3404 int rewind = ZPOOL_NEVER_REWIND;
3405
3406 (void) setrlimit(RLIMIT_NOFILE, &rl);
3407 (void) enable_extended_FILE_stdio(-1, -1);
3408
3409 dprintf_setup(&argc, argv);
3410
3411 while ((c = getopt(argc, argv,
3412 "bcdhilmMI:suCDRSAFLXx:evp:t:U:P")) != -1) {
3413 switch (c) {
3414 case 'b':
3415 case 'c':
3416 case 'd':
3417 case 'h':
3418 case 'i':
3419 case 'l':
3420 case 'm':
3421 case 's':
3422 case 'u':
3423 case 'C':
3424 case 'D':
3425 case 'M':
3426 case 'R':
3427 case 'S':
3428 dump_opt[c]++;
3429 dump_all = 0;
3430 break;
3431 case 'A':
3432 case 'F':
3433 case 'L':
3434 case 'X':
3435 case 'e':
3436 case 'P':
3437 dump_opt[c]++;
3438 break;
3439 case 'I':
3440 max_inflight = strtoull(optarg, NULL, 0);
3441 if (max_inflight == 0) {
3442 (void) fprintf(stderr, "maximum number "
3443 "of inflight I/Os must be greater "
3444 "than 0\n");
3445 usage();
3446 }
3447 break;
3448 case 'p':
3449 if (searchdirs == NULL) {
3450 searchdirs = umem_alloc(sizeof (char *),
3451 UMEM_NOFAIL);
3452 } else {
3453 char **tmp = umem_alloc((nsearch + 1) *
3454 sizeof (char *), UMEM_NOFAIL);
3455 bcopy(searchdirs, tmp, nsearch *
3456 sizeof (char *));
3457 umem_free(searchdirs,
3458 nsearch * sizeof (char *));
3459 searchdirs = tmp;
3460 }
3461 searchdirs[nsearch++] = optarg;
3462 break;
3463 case 't':
3464 max_txg = strtoull(optarg, NULL, 0);
3465 if (max_txg < TXG_INITIAL) {
3466 (void) fprintf(stderr, "incorrect txg "
3467 "specified: %s\n", optarg);
3468 usage();
3469 }
3470 break;
3471 case 'U':
3472 spa_config_path = optarg;
3473 break;
3474 case 'v':
3475 verbose++;
3476 break;
3477 case 'x':
3478 vn_dumpdir = optarg;
3479 break;
3480 default:
3481 usage();
3482 break;
3483 }
3484 }
3485
3486 if (!dump_opt['e'] && searchdirs != NULL) {
3487 (void) fprintf(stderr, "-p option requires use of -e\n");
3488 usage();
3489 }
3490
3491 /*
3492 * ZDB does not typically re-read blocks; therefore limit the ARC
3493 * to 256 MB, which can be used entirely for metadata.
3494 */
3495 zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
3496
3497 /*
3498 * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
3499 * "zdb -b" uses traversal prefetch which uses async reads.
3500 * For good performance, let several of them be active at once.
3501 */
3502 zfs_vdev_async_read_max_active = 10;
3503
3504 kernel_init(FREAD);
3505 g_zfs = libzfs_init();
3506 ASSERT(g_zfs != NULL);
3507
3508 if (dump_all)
3509 verbose = MAX(verbose, 1);
3510
3511 for (c = 0; c < 256; c++) {
3512 if (dump_all && !strchr("elAFLRSXP", c))
3513 dump_opt[c] = 1;
3514 if (dump_opt[c])
3515 dump_opt[c] += verbose;
3516 }
3517
3518 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3519 zfs_recover = (dump_opt['A'] > 1);
3520
3521 argc -= optind;
3522 argv += optind;
3523
3524 if (argc < 2 && dump_opt['R'])
3525 usage();
3526 if (argc < 1) {
3527 if (!dump_opt['e'] && dump_opt['C']) {
3528 dump_cachefile(spa_config_path);
3529 return (0);
3530 }
3531 usage();
3532 }
3533
3534 if (dump_opt['l']) {
3535 dump_label(argv[0]);
3536 return (0);
3537 }
3538
3539 if (dump_opt['X'] || dump_opt['F'])
3540 rewind = ZPOOL_DO_REWIND |
3541 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3542
3543 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3544 nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3545 nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3546 fatal("internal error: %s", strerror(ENOMEM));
3547
3548 error = 0;
3549 target = argv[0];
3550
3551 if (dump_opt['e']) {
3552 nvlist_t *cfg = NULL;
3553 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3554
3555 error = ENOENT;
3556 if (name) {
3557 if (dump_opt['C'] > 1) {
3558 (void) printf("\nConfiguration for import:\n");
3559 dump_nvlist(cfg, 8);
3560 }
3561 if (nvlist_add_nvlist(cfg,
3562 ZPOOL_REWIND_POLICY, policy) != 0) {
3563 fatal("can't open '%s': %s",
3564 target, strerror(ENOMEM));
3565 }
3566 if ((error = spa_import(name, cfg, NULL,
3567 ZFS_IMPORT_MISSING_LOG)) != 0) {
3568 error = spa_import(name, cfg, NULL,
3569 ZFS_IMPORT_VERBATIM);
3570 }
3571 }
3572 }
3573
3574 if (error == 0) {
3575 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3576 error = spa_open_rewind(target, &spa, FTAG, policy,
3577 NULL);
3578 if (error) {
3579 /*
3580 * If we're missing the log device then
3581 * try opening the pool after clearing the
3582 * log state.
3583 */
3584 mutex_enter(&spa_namespace_lock);
3585 if ((spa = spa_lookup(target)) != NULL &&
3586 spa->spa_log_state == SPA_LOG_MISSING) {
3587 spa->spa_log_state = SPA_LOG_CLEAR;
3588 error = 0;
3589 }
3590 mutex_exit(&spa_namespace_lock);
3591
3592 if (!error) {
3593 error = spa_open_rewind(target, &spa,
3594 FTAG, policy, NULL);
3595 }
3596 }
3597 } else {
3598 error = dmu_objset_own(target, DMU_OST_ANY,
3599 B_TRUE, FTAG, &os);
3600 }
3601 }
3602 nvlist_free(policy);
3603
3604 if (error)
3605 fatal("can't open '%s': %s", target, strerror(error));
3606
3607 argv++;
3608 argc--;
3609 if (!dump_opt['R']) {
3610 if (argc > 0) {
3611 zopt_objects = argc;
3612 zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3613 for (i = 0; i < zopt_objects; i++) {
3614 errno = 0;
3615 zopt_object[i] = strtoull(argv[i], NULL, 0);
3616 if (zopt_object[i] == 0 && errno != 0)
3617 fatal("bad number %s: %s",
3618 argv[i], strerror(errno));
3619 }
3620 }
3621 if (os != NULL) {
3622 dump_dir(os);
3623 } else if (zopt_objects > 0 && !dump_opt['m']) {
3624 dump_dir(spa->spa_meta_objset);
3625 } else {
3626 dump_zpool(spa);
3627 }
3628 } else {
3629 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3630 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3631 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3632 flagbits['e'] = ZDB_FLAG_BSWAP;
3633 flagbits['g'] = ZDB_FLAG_GBH;
3634 flagbits['i'] = ZDB_FLAG_INDIRECT;
3635 flagbits['p'] = ZDB_FLAG_PHYS;
3636 flagbits['r'] = ZDB_FLAG_RAW;
3637
3638 for (i = 0; i < argc; i++)
3639 zdb_read_block(argv[i], spa);
3640 }
3641
3642 (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3643
3644 fuid_table_destroy();
3645 sa_loaded = B_FALSE;
3646
3647 libzfs_fini(g_zfs);
3648 kernel_fini();
3649
3650 return (0);
3651 }
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