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.
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.
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]
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011, 2016 by Delphix. All rights reserved.
25 * Copyright (c) 2014 Integros [integros.com]
30 #include <stdio_ext.h>
33 #include <sys/zfs_context.h>
35 #include <sys/spa_impl.h>
38 #include <sys/fs/zfs.h>
39 #include <sys/zfs_znode.h>
40 #include <sys/zfs_sa.h>
42 #include <sys/sa_impl.h>
44 #include <sys/vdev_impl.h>
45 #include <sys/metaslab_impl.h>
46 #include <sys/dmu_objset.h>
47 #include <sys/dsl_dir.h>
48 #include <sys/dsl_dataset.h>
49 #include <sys/dsl_pool.h>
52 #include <sys/zil_impl.h>
54 #include <sys/resource.h>
55 #include <sys/dmu_traverse.h>
56 #include <sys/zio_checksum.h>
57 #include <sys/zio_compress.h>
58 #include <sys/zfs_fuid.h>
61 #include <sys/zfeature.h>
62 #include <zfs_comutil.h>
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))
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;
82 boolean_t zfs_recover;
83 uint64_t zfs_arc_max, zfs_arc_meta_limit;
84 int zfs_vdev_async_read_max_active;
87 const char cmdname[] = "zdb";
88 uint8_t dump_opt[256];
90 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
92 extern void dump_intent_log(zilog_t *);
93 static uint64_t *zopt_object = NULL;
94 static int zopt_objects = 0;
95 static libzfs_handle_t *g_zfs;
96 static uint64_t max_inflight = 1000;
98 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *);
101 * These libumem hooks provide a reasonable set of defaults for the allocator's
102 * debugging facilities.
107 return ("default,verbose"); /* $UMEM_DEBUG setting */
111 _umem_logging_init(void)
113 return ("fail,contents"); /* $UMEM_LOGGING setting */
119 (void) fprintf(stderr,
120 "Usage: %s [-CumMdibcsDvhLXFPAG] [-t txg] [-e [-p path...]] "
121 "[-U config] [-I inflight I/Os] [-x dumpdir] poolname [object...]\n"
122 " %s [-divPA] [-e -p path...] [-U config] dataset "
124 " %s -mM [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
125 "poolname [vdev [metaslab...]]\n"
126 " %s -R [-A] [-e [-p path...]] poolname "
127 "vdev:offset:size[:flags]\n"
128 " %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
129 " %s -l [-uA] device\n"
130 " %s -C [-A] [-U config]\n\n",
131 cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
133 (void) fprintf(stderr, " Dataset name must include at least one "
134 "separator character '/' or '@'\n");
135 (void) fprintf(stderr, " If dataset name is specified, only that "
136 "dataset is dumped\n");
137 (void) fprintf(stderr, " If object numbers are specified, only "
138 "those objects are dumped\n\n");
139 (void) fprintf(stderr, " Options to control amount of output:\n");
140 (void) fprintf(stderr, " -u uberblock\n");
141 (void) fprintf(stderr, " -d dataset(s)\n");
142 (void) fprintf(stderr, " -i intent logs\n");
143 (void) fprintf(stderr, " -C config (or cachefile if alone)\n");
144 (void) fprintf(stderr, " -h pool history\n");
145 (void) fprintf(stderr, " -b block statistics\n");
146 (void) fprintf(stderr, " -m metaslabs\n");
147 (void) fprintf(stderr, " -M metaslab groups\n");
148 (void) fprintf(stderr, " -c checksum all metadata (twice for "
149 "all data) blocks\n");
150 (void) fprintf(stderr, " -s report stats on zdb's I/O\n");
151 (void) fprintf(stderr, " -D dedup statistics\n");
152 (void) fprintf(stderr, " -S simulate dedup to measure effect\n");
153 (void) fprintf(stderr, " -v verbose (applies to all others)\n");
154 (void) fprintf(stderr, " -l dump label contents\n");
155 (void) fprintf(stderr, " -L disable leak tracking (do not "
156 "load spacemaps)\n");
157 (void) fprintf(stderr, " -R read and display block from a "
159 (void) fprintf(stderr, " Below options are intended for use "
160 "with other options:\n");
161 (void) fprintf(stderr, " -A ignore assertions (-A), enable "
162 "panic recovery (-AA) or both (-AAA)\n");
163 (void) fprintf(stderr, " -F attempt automatic rewind within "
164 "safe range of transaction groups\n");
165 (void) fprintf(stderr, " -U <cachefile_path> -- use alternate "
167 (void) fprintf(stderr, " -X attempt extreme rewind (does not "
168 "work with dataset)\n");
169 (void) fprintf(stderr, " -e pool is exported/destroyed/"
170 "has altroot/not in a cachefile\n");
171 (void) fprintf(stderr, " -p <path> -- use one or more with "
172 "-e to specify path to vdev dir\n");
173 (void) fprintf(stderr, " -x <dumpdir> -- "
174 "dump all read blocks into specified directory\n");
175 (void) fprintf(stderr, " -P print numbers in parseable form\n");
176 (void) fprintf(stderr, " -t <txg> -- highest txg to use when "
177 "searching for uberblocks\n");
178 (void) fprintf(stderr, " -I <number of inflight I/Os> -- "
179 "specify the maximum number of "
180 "checksumming I/Os [default is 200]\n");
181 (void) fprintf(stderr, " -G dump zfs_dbgmsg buffer before "
183 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
184 "to make only that option verbose\n");
185 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
194 zfs_dbgmsg_print("zdb");
199 * Called for usage errors that are discovered after a call to spa_open(),
200 * dmu_bonus_hold(), or pool_match(). abort() is called for other errors.
204 fatal(const char *fmt, ...)
209 (void) fprintf(stderr, "%s: ", cmdname);
210 (void) vfprintf(stderr, fmt, ap);
212 (void) fprintf(stderr, "\n");
221 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
224 size_t nvsize = *(uint64_t *)data;
225 char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
227 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
229 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
231 umem_free(packed, nvsize);
240 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
242 spa_history_phys_t *shp = data;
247 (void) printf("\t\tpool_create_len = %llu\n",
248 (u_longlong_t)shp->sh_pool_create_len);
249 (void) printf("\t\tphys_max_off = %llu\n",
250 (u_longlong_t)shp->sh_phys_max_off);
251 (void) printf("\t\tbof = %llu\n",
252 (u_longlong_t)shp->sh_bof);
253 (void) printf("\t\teof = %llu\n",
254 (u_longlong_t)shp->sh_eof);
255 (void) printf("\t\trecords_lost = %llu\n",
256 (u_longlong_t)shp->sh_records_lost);
260 zdb_nicenum(uint64_t num, char *buf)
263 (void) sprintf(buf, "%llu", (longlong_t)num);
268 const char histo_stars[] = "****************************************";
269 const int histo_width = sizeof (histo_stars) - 1;
272 dump_histogram(const uint64_t *histo, int size, int offset)
275 int minidx = size - 1;
279 for (i = 0; i < size; i++) {
282 if (histo[i] > 0 && i > maxidx)
284 if (histo[i] > 0 && i < minidx)
288 if (max < histo_width)
291 for (i = minidx; i <= maxidx; i++) {
292 (void) printf("\t\t\t%3u: %6llu %s\n",
293 i + offset, (u_longlong_t)histo[i],
294 &histo_stars[(max - histo[i]) * histo_width / max]);
299 dump_zap_stats(objset_t *os, uint64_t object)
304 error = zap_get_stats(os, object, &zs);
308 if (zs.zs_ptrtbl_len == 0) {
309 ASSERT(zs.zs_num_blocks == 1);
310 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
311 (u_longlong_t)zs.zs_blocksize,
312 (u_longlong_t)zs.zs_num_entries);
316 (void) printf("\tFat ZAP stats:\n");
318 (void) printf("\t\tPointer table:\n");
319 (void) printf("\t\t\t%llu elements\n",
320 (u_longlong_t)zs.zs_ptrtbl_len);
321 (void) printf("\t\t\tzt_blk: %llu\n",
322 (u_longlong_t)zs.zs_ptrtbl_zt_blk);
323 (void) printf("\t\t\tzt_numblks: %llu\n",
324 (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
325 (void) printf("\t\t\tzt_shift: %llu\n",
326 (u_longlong_t)zs.zs_ptrtbl_zt_shift);
327 (void) printf("\t\t\tzt_blks_copied: %llu\n",
328 (u_longlong_t)zs.zs_ptrtbl_blks_copied);
329 (void) printf("\t\t\tzt_nextblk: %llu\n",
330 (u_longlong_t)zs.zs_ptrtbl_nextblk);
332 (void) printf("\t\tZAP entries: %llu\n",
333 (u_longlong_t)zs.zs_num_entries);
334 (void) printf("\t\tLeaf blocks: %llu\n",
335 (u_longlong_t)zs.zs_num_leafs);
336 (void) printf("\t\tTotal blocks: %llu\n",
337 (u_longlong_t)zs.zs_num_blocks);
338 (void) printf("\t\tzap_block_type: 0x%llx\n",
339 (u_longlong_t)zs.zs_block_type);
340 (void) printf("\t\tzap_magic: 0x%llx\n",
341 (u_longlong_t)zs.zs_magic);
342 (void) printf("\t\tzap_salt: 0x%llx\n",
343 (u_longlong_t)zs.zs_salt);
345 (void) printf("\t\tLeafs with 2^n pointers:\n");
346 dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
348 (void) printf("\t\tBlocks with n*5 entries:\n");
349 dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
351 (void) printf("\t\tBlocks n/10 full:\n");
352 dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
354 (void) printf("\t\tEntries with n chunks:\n");
355 dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
357 (void) printf("\t\tBuckets with n entries:\n");
358 dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
363 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
369 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
371 (void) printf("\tUNKNOWN OBJECT TYPE\n");
376 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
382 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
388 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
391 zap_attribute_t attr;
395 dump_zap_stats(os, object);
398 for (zap_cursor_init(&zc, os, object);
399 zap_cursor_retrieve(&zc, &attr) == 0;
400 zap_cursor_advance(&zc)) {
401 (void) printf("\t\t%s = ", attr.za_name);
402 if (attr.za_num_integers == 0) {
406 prop = umem_zalloc(attr.za_num_integers *
407 attr.za_integer_length, UMEM_NOFAIL);
408 (void) zap_lookup(os, object, attr.za_name,
409 attr.za_integer_length, attr.za_num_integers, prop);
410 if (attr.za_integer_length == 1) {
411 (void) printf("%s", (char *)prop);
413 for (i = 0; i < attr.za_num_integers; i++) {
414 switch (attr.za_integer_length) {
417 ((uint16_t *)prop)[i]);
421 ((uint32_t *)prop)[i]);
424 (void) printf("%lld ",
425 (u_longlong_t)((int64_t *)prop)[i]);
431 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
433 zap_cursor_fini(&zc);
437 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size)
439 bpobj_phys_t *bpop = data;
440 char bytes[32], comp[32], uncomp[32];
445 zdb_nicenum(bpop->bpo_bytes, bytes);
446 zdb_nicenum(bpop->bpo_comp, comp);
447 zdb_nicenum(bpop->bpo_uncomp, uncomp);
449 (void) printf("\t\tnum_blkptrs = %llu\n",
450 (u_longlong_t)bpop->bpo_num_blkptrs);
451 (void) printf("\t\tbytes = %s\n", bytes);
452 if (size >= BPOBJ_SIZE_V1) {
453 (void) printf("\t\tcomp = %s\n", comp);
454 (void) printf("\t\tuncomp = %s\n", uncomp);
456 if (size >= sizeof (*bpop)) {
457 (void) printf("\t\tsubobjs = %llu\n",
458 (u_longlong_t)bpop->bpo_subobjs);
459 (void) printf("\t\tnum_subobjs = %llu\n",
460 (u_longlong_t)bpop->bpo_num_subobjs);
463 if (dump_opt['d'] < 5)
466 for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) {
467 char blkbuf[BP_SPRINTF_LEN];
470 int err = dmu_read(os, object,
471 i * sizeof (bp), sizeof (bp), &bp, 0);
473 (void) printf("got error %u from dmu_read\n", err);
476 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp);
477 (void) printf("\t%s\n", blkbuf);
483 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size)
485 dmu_object_info_t doi;
487 VERIFY0(dmu_object_info(os, object, &doi));
488 uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP);
490 int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0);
492 (void) printf("got error %u from dmu_read\n", err);
493 kmem_free(subobjs, doi.doi_max_offset);
497 int64_t last_nonzero = -1;
498 for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) {
503 for (int64_t i = 0; i <= last_nonzero; i++) {
504 (void) printf("\t%llu\n", (longlong_t)subobjs[i]);
506 kmem_free(subobjs, doi.doi_max_offset);
511 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
513 dump_zap_stats(os, object);
514 /* contents are printed elsewhere, properly decoded */
519 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
522 zap_attribute_t attr;
524 dump_zap_stats(os, object);
527 for (zap_cursor_init(&zc, os, object);
528 zap_cursor_retrieve(&zc, &attr) == 0;
529 zap_cursor_advance(&zc)) {
530 (void) printf("\t\t%s = ", attr.za_name);
531 if (attr.za_num_integers == 0) {
535 (void) printf(" %llx : [%d:%d:%d]\n",
536 (u_longlong_t)attr.za_first_integer,
537 (int)ATTR_LENGTH(attr.za_first_integer),
538 (int)ATTR_BSWAP(attr.za_first_integer),
539 (int)ATTR_NUM(attr.za_first_integer));
541 zap_cursor_fini(&zc);
546 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
549 zap_attribute_t attr;
550 uint16_t *layout_attrs;
553 dump_zap_stats(os, object);
556 for (zap_cursor_init(&zc, os, object);
557 zap_cursor_retrieve(&zc, &attr) == 0;
558 zap_cursor_advance(&zc)) {
559 (void) printf("\t\t%s = [", attr.za_name);
560 if (attr.za_num_integers == 0) {
565 VERIFY(attr.za_integer_length == 2);
566 layout_attrs = umem_zalloc(attr.za_num_integers *
567 attr.za_integer_length, UMEM_NOFAIL);
569 VERIFY(zap_lookup(os, object, attr.za_name,
570 attr.za_integer_length,
571 attr.za_num_integers, layout_attrs) == 0);
573 for (i = 0; i != attr.za_num_integers; i++)
574 (void) printf(" %d ", (int)layout_attrs[i]);
575 (void) printf("]\n");
576 umem_free(layout_attrs,
577 attr.za_num_integers * attr.za_integer_length);
579 zap_cursor_fini(&zc);
584 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
587 zap_attribute_t attr;
588 const char *typenames[] = {
589 /* 0 */ "not specified",
591 /* 2 */ "Character Device",
592 /* 3 */ "3 (invalid)",
594 /* 5 */ "5 (invalid)",
595 /* 6 */ "Block Device",
596 /* 7 */ "7 (invalid)",
597 /* 8 */ "Regular File",
598 /* 9 */ "9 (invalid)",
599 /* 10 */ "Symbolic Link",
600 /* 11 */ "11 (invalid)",
603 /* 14 */ "Event Port",
604 /* 15 */ "15 (invalid)",
607 dump_zap_stats(os, object);
610 for (zap_cursor_init(&zc, os, object);
611 zap_cursor_retrieve(&zc, &attr) == 0;
612 zap_cursor_advance(&zc)) {
613 (void) printf("\t\t%s = %lld (type: %s)\n",
614 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
615 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
617 zap_cursor_fini(&zc);
621 get_dtl_refcount(vdev_t *vd)
625 if (vd->vdev_ops->vdev_op_leaf) {
626 space_map_t *sm = vd->vdev_dtl_sm;
629 sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
634 for (int c = 0; c < vd->vdev_children; c++)
635 refcount += get_dtl_refcount(vd->vdev_child[c]);
640 get_metaslab_refcount(vdev_t *vd)
644 if (vd->vdev_top == vd && !vd->vdev_removing) {
645 for (int m = 0; m < vd->vdev_ms_count; m++) {
646 space_map_t *sm = vd->vdev_ms[m]->ms_sm;
649 sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
653 for (int c = 0; c < vd->vdev_children; c++)
654 refcount += get_metaslab_refcount(vd->vdev_child[c]);
660 verify_spacemap_refcounts(spa_t *spa)
662 uint64_t expected_refcount = 0;
663 uint64_t actual_refcount;
665 (void) feature_get_refcount(spa,
666 &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
668 actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
669 actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
671 if (expected_refcount != actual_refcount) {
672 (void) printf("space map refcount mismatch: expected %lld != "
674 (longlong_t)expected_refcount,
675 (longlong_t)actual_refcount);
682 dump_spacemap(objset_t *os, space_map_t *sm)
684 uint64_t alloc, offset, entry;
685 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
686 "INVALID", "INVALID", "INVALID", "INVALID" };
692 * Print out the freelist entries in both encoded and decoded form.
695 for (offset = 0; offset < space_map_length(sm);
696 offset += sizeof (entry)) {
697 uint8_t mapshift = sm->sm_shift;
699 VERIFY0(dmu_read(os, space_map_object(sm), offset,
700 sizeof (entry), &entry, DMU_READ_PREFETCH));
701 if (SM_DEBUG_DECODE(entry)) {
703 (void) printf("\t [%6llu] %s: txg %llu, pass %llu\n",
704 (u_longlong_t)(offset / sizeof (entry)),
705 ddata[SM_DEBUG_ACTION_DECODE(entry)],
706 (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
707 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
709 (void) printf("\t [%6llu] %c range:"
710 " %010llx-%010llx size: %06llx\n",
711 (u_longlong_t)(offset / sizeof (entry)),
712 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
713 (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
714 mapshift) + sm->sm_start),
715 (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
716 mapshift) + sm->sm_start +
717 (SM_RUN_DECODE(entry) << mapshift)),
718 (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
719 if (SM_TYPE_DECODE(entry) == SM_ALLOC)
720 alloc += SM_RUN_DECODE(entry) << mapshift;
722 alloc -= SM_RUN_DECODE(entry) << mapshift;
725 if (alloc != space_map_allocated(sm)) {
726 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
727 "with space map summary (%llu)\n",
728 (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
733 dump_metaslab_stats(metaslab_t *msp)
736 range_tree_t *rt = msp->ms_tree;
737 avl_tree_t *t = &msp->ms_size_tree;
738 int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
740 zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
742 (void) printf("\t %25s %10lu %7s %6s %4s %4d%%\n",
743 "segments", avl_numnodes(t), "maxsize", maxbuf,
744 "freepct", free_pct);
745 (void) printf("\tIn-memory histogram:\n");
746 dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
750 dump_metaslab(metaslab_t *msp)
752 vdev_t *vd = msp->ms_group->mg_vd;
753 spa_t *spa = vd->vdev_spa;
754 space_map_t *sm = msp->ms_sm;
757 zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
760 "\tmetaslab %6llu offset %12llx spacemap %6llu free %5s\n",
761 (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
762 (u_longlong_t)space_map_object(sm), freebuf);
764 if (dump_opt['m'] > 2 && !dump_opt['L']) {
765 mutex_enter(&msp->ms_lock);
766 metaslab_load_wait(msp);
767 if (!msp->ms_loaded) {
768 VERIFY0(metaslab_load(msp));
769 range_tree_stat_verify(msp->ms_tree);
771 dump_metaslab_stats(msp);
772 metaslab_unload(msp);
773 mutex_exit(&msp->ms_lock);
776 if (dump_opt['m'] > 1 && sm != NULL &&
777 spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
779 * The space map histogram represents free space in chunks
780 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
782 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
783 (u_longlong_t)msp->ms_fragmentation);
784 dump_histogram(sm->sm_phys->smp_histogram,
785 SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
788 if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
789 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
791 mutex_enter(&msp->ms_lock);
792 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
793 mutex_exit(&msp->ms_lock);
798 print_vdev_metaslab_header(vdev_t *vd)
800 (void) printf("\tvdev %10llu\n\t%-10s%5llu %-19s %-15s %-10s\n",
801 (u_longlong_t)vd->vdev_id,
802 "metaslabs", (u_longlong_t)vd->vdev_ms_count,
803 "offset", "spacemap", "free");
804 (void) printf("\t%15s %19s %15s %10s\n",
805 "---------------", "-------------------",
806 "---------------", "-------------");
810 dump_metaslab_groups(spa_t *spa)
812 vdev_t *rvd = spa->spa_root_vdev;
813 metaslab_class_t *mc = spa_normal_class(spa);
814 uint64_t fragmentation;
816 metaslab_class_histogram_verify(mc);
818 for (int c = 0; c < rvd->vdev_children; c++) {
819 vdev_t *tvd = rvd->vdev_child[c];
820 metaslab_group_t *mg = tvd->vdev_mg;
822 if (mg->mg_class != mc)
825 metaslab_group_histogram_verify(mg);
826 mg->mg_fragmentation = metaslab_group_fragmentation(mg);
828 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
830 (u_longlong_t)tvd->vdev_id,
831 (u_longlong_t)tvd->vdev_ms_count);
832 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
833 (void) printf("%3s\n", "-");
835 (void) printf("%3llu%%\n",
836 (u_longlong_t)mg->mg_fragmentation);
838 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
841 (void) printf("\tpool %s\tfragmentation", spa_name(spa));
842 fragmentation = metaslab_class_fragmentation(mc);
843 if (fragmentation == ZFS_FRAG_INVALID)
844 (void) printf("\t%3s\n", "-");
846 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
847 dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
851 dump_metaslabs(spa_t *spa)
853 vdev_t *vd, *rvd = spa->spa_root_vdev;
854 uint64_t m, c = 0, children = rvd->vdev_children;
856 (void) printf("\nMetaslabs:\n");
858 if (!dump_opt['d'] && zopt_objects > 0) {
862 (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
864 if (zopt_objects > 1) {
865 vd = rvd->vdev_child[c];
866 print_vdev_metaslab_header(vd);
868 for (m = 1; m < zopt_objects; m++) {
869 if (zopt_object[m] < vd->vdev_ms_count)
871 vd->vdev_ms[zopt_object[m]]);
873 (void) fprintf(stderr, "bad metaslab "
875 (u_longlong_t)zopt_object[m]);
882 for (; c < children; c++) {
883 vd = rvd->vdev_child[c];
884 print_vdev_metaslab_header(vd);
886 for (m = 0; m < vd->vdev_ms_count; m++)
887 dump_metaslab(vd->vdev_ms[m]);
893 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
895 const ddt_phys_t *ddp = dde->dde_phys;
896 const ddt_key_t *ddk = &dde->dde_key;
897 char *types[4] = { "ditto", "single", "double", "triple" };
898 char blkbuf[BP_SPRINTF_LEN];
901 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
902 if (ddp->ddp_phys_birth == 0)
904 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
905 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
906 (void) printf("index %llx refcnt %llu %s %s\n",
907 (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
913 dump_dedup_ratio(const ddt_stat_t *dds)
915 double rL, rP, rD, D, dedup, compress, copies;
917 if (dds->dds_blocks == 0)
920 rL = (double)dds->dds_ref_lsize;
921 rP = (double)dds->dds_ref_psize;
922 rD = (double)dds->dds_ref_dsize;
923 D = (double)dds->dds_dsize;
929 (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
930 "dedup * compress / copies = %.2f\n\n",
931 dedup, compress, copies, dedup * compress / copies);
935 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
937 char name[DDT_NAMELEN];
940 dmu_object_info_t doi;
941 uint64_t count, dspace, mspace;
944 error = ddt_object_info(ddt, type, class, &doi);
950 error = ddt_object_count(ddt, type, class, &count);
955 dspace = doi.doi_physical_blocks_512 << 9;
956 mspace = doi.doi_fill_count * doi.doi_data_block_size;
958 ddt_object_name(ddt, type, class, name);
960 (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
963 (u_longlong_t)(dspace / count),
964 (u_longlong_t)(mspace / count));
966 if (dump_opt['D'] < 3)
969 zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
971 if (dump_opt['D'] < 4)
974 if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
977 (void) printf("%s contents:\n\n", name);
979 while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
980 dump_dde(ddt, &dde, walk);
982 ASSERT(error == ENOENT);
988 dump_all_ddts(spa_t *spa)
990 ddt_histogram_t ddh_total = { 0 };
991 ddt_stat_t dds_total = { 0 };
993 for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
994 ddt_t *ddt = spa->spa_ddt[c];
995 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
996 for (enum ddt_class class = 0; class < DDT_CLASSES;
998 dump_ddt(ddt, type, class);
1003 ddt_get_dedup_stats(spa, &dds_total);
1005 if (dds_total.dds_blocks == 0) {
1006 (void) printf("All DDTs are empty\n");
1010 (void) printf("\n");
1012 if (dump_opt['D'] > 1) {
1013 (void) printf("DDT histogram (aggregated over all DDTs):\n");
1014 ddt_get_dedup_histogram(spa, &ddh_total);
1015 zpool_dump_ddt(&dds_total, &ddh_total);
1018 dump_dedup_ratio(&dds_total);
1022 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
1026 (void) printf("%s [%llu,%llu) length %llu\n",
1028 (u_longlong_t)start,
1029 (u_longlong_t)(start + size),
1030 (u_longlong_t)(size));
1034 dump_dtl(vdev_t *vd, int indent)
1036 spa_t *spa = vd->vdev_spa;
1038 char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
1041 spa_vdev_state_enter(spa, SCL_NONE);
1042 required = vdev_dtl_required(vd);
1043 (void) spa_vdev_state_exit(spa, NULL, 0);
1046 (void) printf("\nDirty time logs:\n\n");
1048 (void) printf("\t%*s%s [%s]\n", indent, "",
1049 vd->vdev_path ? vd->vdev_path :
1050 vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
1051 required ? "DTL-required" : "DTL-expendable");
1053 for (int t = 0; t < DTL_TYPES; t++) {
1054 range_tree_t *rt = vd->vdev_dtl[t];
1055 if (range_tree_space(rt) == 0)
1057 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
1058 indent + 2, "", name[t]);
1059 mutex_enter(rt->rt_lock);
1060 range_tree_walk(rt, dump_dtl_seg, prefix);
1061 mutex_exit(rt->rt_lock);
1062 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
1063 dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
1066 for (int c = 0; c < vd->vdev_children; c++)
1067 dump_dtl(vd->vdev_child[c], indent + 4);
1070 /* from spa_history.c: spa_history_create_obj() */
1071 #define HIS_BUF_LEN_DEF (128 << 10)
1072 #define HIS_BUF_LEN_MAX (1 << 30)
1075 dump_history(spa_t *spa)
1077 nvlist_t **events = NULL;
1079 uint64_t bufsize = HIS_BUF_LEN_DEF;
1080 uint64_t resid, len, off = 0;
1086 char internalstr[MAXPATHLEN];
1088 if ((buf = malloc(bufsize)) == NULL)
1089 (void) fprintf(stderr, "Unable to read history: "
1094 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
1095 (void) fprintf(stderr, "Unable to read history: "
1096 "error %d\n", error);
1100 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1105 * If the history block is too big, double the buffer
1106 * size and try again.
1113 if ((bufsize >= HIS_BUF_LEN_MAX) ||
1114 ((buf = malloc(bufsize)) == NULL)) {
1115 (void) fprintf(stderr, "Unable to read history: "
1123 (void) printf("\nHistory:\n");
1124 for (int i = 0; i < num; i++) {
1125 uint64_t time, txg, ievent;
1127 boolean_t printed = B_FALSE;
1129 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
1132 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
1134 if (nvlist_lookup_uint64(events[i],
1135 ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1137 verify(nvlist_lookup_uint64(events[i],
1138 ZPOOL_HIST_TXG, &txg) == 0);
1139 verify(nvlist_lookup_string(events[i],
1140 ZPOOL_HIST_INT_STR, &intstr) == 0);
1141 if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1144 (void) snprintf(internalstr,
1145 sizeof (internalstr),
1146 "[internal %s txg:%lld] %s",
1147 zfs_history_event_names[ievent], txg,
1152 (void) localtime_r(&tsec, &t);
1153 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1154 (void) printf("%s %s\n", tbuf, cmd);
1158 if (dump_opt['h'] > 1) {
1160 (void) printf("unrecognized record:\n");
1161 dump_nvlist(events[i], 2);
1168 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1173 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1174 const zbookmark_phys_t *zb)
1177 ASSERT(zb->zb_level < 0);
1178 if (zb->zb_object == 0)
1179 return (zb->zb_blkid);
1180 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1183 ASSERT(zb->zb_level >= 0);
1185 return ((zb->zb_blkid <<
1186 (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1187 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1191 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1193 const dva_t *dva = bp->blk_dva;
1194 int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1196 if (dump_opt['b'] >= 6) {
1197 snprintf_blkptr(blkbuf, buflen, bp);
1201 if (BP_IS_EMBEDDED(bp)) {
1202 (void) sprintf(blkbuf,
1203 "EMBEDDED et=%u %llxL/%llxP B=%llu",
1204 (int)BPE_GET_ETYPE(bp),
1205 (u_longlong_t)BPE_GET_LSIZE(bp),
1206 (u_longlong_t)BPE_GET_PSIZE(bp),
1207 (u_longlong_t)bp->blk_birth);
1212 for (int i = 0; i < ndvas; i++)
1213 (void) snprintf(blkbuf + strlen(blkbuf),
1214 buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1215 (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1216 (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1217 (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1219 if (BP_IS_HOLE(bp)) {
1220 (void) snprintf(blkbuf + strlen(blkbuf),
1221 buflen - strlen(blkbuf),
1223 (u_longlong_t)BP_GET_LSIZE(bp),
1224 (u_longlong_t)bp->blk_birth);
1226 (void) snprintf(blkbuf + strlen(blkbuf),
1227 buflen - strlen(blkbuf),
1228 "%llxL/%llxP F=%llu B=%llu/%llu",
1229 (u_longlong_t)BP_GET_LSIZE(bp),
1230 (u_longlong_t)BP_GET_PSIZE(bp),
1231 (u_longlong_t)BP_GET_FILL(bp),
1232 (u_longlong_t)bp->blk_birth,
1233 (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1238 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1239 const dnode_phys_t *dnp)
1241 char blkbuf[BP_SPRINTF_LEN];
1244 if (!BP_IS_EMBEDDED(bp)) {
1245 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1246 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1249 (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1251 ASSERT(zb->zb_level >= 0);
1253 for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1254 if (l == zb->zb_level) {
1255 (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1261 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1262 (void) printf("%s\n", blkbuf);
1266 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1267 blkptr_t *bp, const zbookmark_phys_t *zb)
1271 if (bp->blk_birth == 0)
1274 print_indirect(bp, zb, dnp);
1276 if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1277 arc_flags_t flags = ARC_FLAG_WAIT;
1280 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1284 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1285 ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1288 ASSERT(buf->b_data);
1290 /* recursively visit blocks below this */
1292 for (i = 0; i < epb; i++, cbp++) {
1293 zbookmark_phys_t czb;
1295 SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1297 zb->zb_blkid * epb + i);
1298 err = visit_indirect(spa, dnp, cbp, &czb);
1301 fill += BP_GET_FILL(cbp);
1304 ASSERT3U(fill, ==, BP_GET_FILL(bp));
1305 arc_buf_destroy(buf, &buf);
1313 dump_indirect(dnode_t *dn)
1315 dnode_phys_t *dnp = dn->dn_phys;
1317 zbookmark_phys_t czb;
1319 (void) printf("Indirect blocks:\n");
1321 SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1322 dn->dn_object, dnp->dn_nlevels - 1, 0);
1323 for (j = 0; j < dnp->dn_nblkptr; j++) {
1325 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1326 &dnp->dn_blkptr[j], &czb);
1329 (void) printf("\n");
1334 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1336 dsl_dir_phys_t *dd = data;
1343 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1345 crtime = dd->dd_creation_time;
1346 (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1347 (void) printf("\t\thead_dataset_obj = %llu\n",
1348 (u_longlong_t)dd->dd_head_dataset_obj);
1349 (void) printf("\t\tparent_dir_obj = %llu\n",
1350 (u_longlong_t)dd->dd_parent_obj);
1351 (void) printf("\t\torigin_obj = %llu\n",
1352 (u_longlong_t)dd->dd_origin_obj);
1353 (void) printf("\t\tchild_dir_zapobj = %llu\n",
1354 (u_longlong_t)dd->dd_child_dir_zapobj);
1355 zdb_nicenum(dd->dd_used_bytes, nice);
1356 (void) printf("\t\tused_bytes = %s\n", nice);
1357 zdb_nicenum(dd->dd_compressed_bytes, nice);
1358 (void) printf("\t\tcompressed_bytes = %s\n", nice);
1359 zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1360 (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1361 zdb_nicenum(dd->dd_quota, nice);
1362 (void) printf("\t\tquota = %s\n", nice);
1363 zdb_nicenum(dd->dd_reserved, nice);
1364 (void) printf("\t\treserved = %s\n", nice);
1365 (void) printf("\t\tprops_zapobj = %llu\n",
1366 (u_longlong_t)dd->dd_props_zapobj);
1367 (void) printf("\t\tdeleg_zapobj = %llu\n",
1368 (u_longlong_t)dd->dd_deleg_zapobj);
1369 (void) printf("\t\tflags = %llx\n",
1370 (u_longlong_t)dd->dd_flags);
1373 zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1374 (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1385 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1387 dsl_dataset_phys_t *ds = data;
1389 char used[32], compressed[32], uncompressed[32], unique[32];
1390 char blkbuf[BP_SPRINTF_LEN];
1395 ASSERT(size == sizeof (*ds));
1396 crtime = ds->ds_creation_time;
1397 zdb_nicenum(ds->ds_referenced_bytes, used);
1398 zdb_nicenum(ds->ds_compressed_bytes, compressed);
1399 zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1400 zdb_nicenum(ds->ds_unique_bytes, unique);
1401 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1403 (void) printf("\t\tdir_obj = %llu\n",
1404 (u_longlong_t)ds->ds_dir_obj);
1405 (void) printf("\t\tprev_snap_obj = %llu\n",
1406 (u_longlong_t)ds->ds_prev_snap_obj);
1407 (void) printf("\t\tprev_snap_txg = %llu\n",
1408 (u_longlong_t)ds->ds_prev_snap_txg);
1409 (void) printf("\t\tnext_snap_obj = %llu\n",
1410 (u_longlong_t)ds->ds_next_snap_obj);
1411 (void) printf("\t\tsnapnames_zapobj = %llu\n",
1412 (u_longlong_t)ds->ds_snapnames_zapobj);
1413 (void) printf("\t\tnum_children = %llu\n",
1414 (u_longlong_t)ds->ds_num_children);
1415 (void) printf("\t\tuserrefs_obj = %llu\n",
1416 (u_longlong_t)ds->ds_userrefs_obj);
1417 (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1418 (void) printf("\t\tcreation_txg = %llu\n",
1419 (u_longlong_t)ds->ds_creation_txg);
1420 (void) printf("\t\tdeadlist_obj = %llu\n",
1421 (u_longlong_t)ds->ds_deadlist_obj);
1422 (void) printf("\t\tused_bytes = %s\n", used);
1423 (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1424 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1425 (void) printf("\t\tunique = %s\n", unique);
1426 (void) printf("\t\tfsid_guid = %llu\n",
1427 (u_longlong_t)ds->ds_fsid_guid);
1428 (void) printf("\t\tguid = %llu\n",
1429 (u_longlong_t)ds->ds_guid);
1430 (void) printf("\t\tflags = %llx\n",
1431 (u_longlong_t)ds->ds_flags);
1432 (void) printf("\t\tnext_clones_obj = %llu\n",
1433 (u_longlong_t)ds->ds_next_clones_obj);
1434 (void) printf("\t\tprops_obj = %llu\n",
1435 (u_longlong_t)ds->ds_props_obj);
1436 (void) printf("\t\tbp = %s\n", blkbuf);
1441 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1443 char blkbuf[BP_SPRINTF_LEN];
1445 if (bp->blk_birth != 0) {
1446 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1447 (void) printf("\t%s\n", blkbuf);
1453 dump_bptree(objset_t *os, uint64_t obj, char *name)
1459 if (dump_opt['d'] < 3)
1462 VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1464 zdb_nicenum(bt->bt_bytes, bytes);
1465 (void) printf("\n %s: %llu datasets, %s\n",
1466 name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1467 dmu_buf_rele(db, FTAG);
1469 if (dump_opt['d'] < 5)
1472 (void) printf("\n");
1474 (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1479 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1481 char blkbuf[BP_SPRINTF_LEN];
1483 ASSERT(bp->blk_birth != 0);
1484 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1485 (void) printf("\t%s\n", blkbuf);
1490 dump_full_bpobj(bpobj_t *bpo, char *name, int indent)
1496 if (dump_opt['d'] < 3)
1499 zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1500 if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1501 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1502 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1503 (void) printf(" %*s: object %llu, %llu local blkptrs, "
1504 "%llu subobjs in object %llu, %s (%s/%s comp)\n",
1506 (u_longlong_t)bpo->bpo_object,
1507 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1508 (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1509 (u_longlong_t)bpo->bpo_phys->bpo_subobjs,
1510 bytes, comp, uncomp);
1512 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1516 VERIFY0(dmu_read(bpo->bpo_os,
1517 bpo->bpo_phys->bpo_subobjs,
1518 i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1519 error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1521 (void) printf("ERROR %u while trying to open "
1523 error, (u_longlong_t)subobj);
1526 dump_full_bpobj(&subbpo, "subobj", indent + 1);
1527 bpobj_close(&subbpo);
1530 (void) printf(" %*s: object %llu, %llu blkptrs, %s\n",
1532 (u_longlong_t)bpo->bpo_object,
1533 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1537 if (dump_opt['d'] < 5)
1542 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1543 (void) printf("\n");
1548 dump_deadlist(dsl_deadlist_t *dl)
1550 dsl_deadlist_entry_t *dle;
1556 if (dump_opt['d'] < 3)
1559 if (dl->dl_oldfmt) {
1560 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1564 zdb_nicenum(dl->dl_phys->dl_used, bytes);
1565 zdb_nicenum(dl->dl_phys->dl_comp, comp);
1566 zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1567 (void) printf("\n Deadlist: %s (%s/%s comp)\n",
1568 bytes, comp, uncomp);
1570 if (dump_opt['d'] < 4)
1573 (void) printf("\n");
1575 /* force the tree to be loaded */
1576 dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1578 for (dle = avl_first(&dl->dl_tree); dle;
1579 dle = AVL_NEXT(&dl->dl_tree, dle)) {
1580 if (dump_opt['d'] >= 5) {
1582 (void) snprintf(buf, sizeof (buf), "mintxg %llu -> "
1583 "obj %llu", (longlong_t)dle->dle_mintxg,
1584 (longlong_t)dle->dle_bpobj.bpo_object);
1585 dump_full_bpobj(&dle->dle_bpobj, buf, 0);
1587 (void) printf("mintxg %llu -> obj %llu\n",
1588 (longlong_t)dle->dle_mintxg,
1589 (longlong_t)dle->dle_bpobj.bpo_object);
1594 static avl_tree_t idx_tree;
1595 static avl_tree_t domain_tree;
1596 static boolean_t fuid_table_loaded;
1597 static boolean_t sa_loaded;
1598 sa_attr_type_t *sa_attr_table;
1601 fuid_table_destroy()
1603 if (fuid_table_loaded) {
1604 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1605 fuid_table_loaded = B_FALSE;
1610 * print uid or gid information.
1611 * For normal POSIX id just the id is printed in decimal format.
1612 * For CIFS files with FUID the fuid is printed in hex followed by
1613 * the domain-rid string.
1616 print_idstr(uint64_t id, const char *id_type)
1618 if (FUID_INDEX(id)) {
1621 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1622 (void) printf("\t%s %llx [%s-%d]\n", id_type,
1623 (u_longlong_t)id, domain, (int)FUID_RID(id));
1625 (void) printf("\t%s %llu\n", id_type, (u_longlong_t)id);
1631 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1633 uint32_t uid_idx, gid_idx;
1635 uid_idx = FUID_INDEX(uid);
1636 gid_idx = FUID_INDEX(gid);
1638 /* Load domain table, if not already loaded */
1639 if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1642 /* first find the fuid object. It lives in the master node */
1643 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1644 8, 1, &fuid_obj) == 0);
1645 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1646 (void) zfs_fuid_table_load(os, fuid_obj,
1647 &idx_tree, &domain_tree);
1648 fuid_table_loaded = B_TRUE;
1651 print_idstr(uid, "uid");
1652 print_idstr(gid, "gid");
1657 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1659 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */
1661 uint64_t xattr, rdev, gen;
1662 uint64_t uid, gid, mode, fsize, parent, links;
1664 uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1665 time_t z_crtime, z_atime, z_mtime, z_ctime;
1666 sa_bulk_attr_t bulk[12];
1671 uint64_t sa_attrs = 0;
1674 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1675 8, 1, &version) == 0);
1676 if (version >= ZPL_VERSION_SA) {
1677 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1678 8, 1, &sa_attrs) == 0);
1680 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1681 ZPL_END, &sa_attr_table)) != 0) {
1682 (void) printf("sa_setup failed errno %d, can't "
1683 "display znode contents\n", error);
1689 if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1690 (void) printf("Failed to get handle for SA znode\n");
1694 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1695 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1696 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1698 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1699 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1701 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1703 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1705 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1707 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1709 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1711 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1713 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1716 if (sa_bulk_lookup(hdl, bulk, idx)) {
1717 (void) sa_handle_destroy(hdl);
1721 z_crtime = (time_t)crtm[0];
1722 z_atime = (time_t)acctm[0];
1723 z_mtime = (time_t)modtm[0];
1724 z_ctime = (time_t)chgtm[0];
1726 if (dump_opt['d'] > 4) {
1727 error = zfs_obj_to_path(os, object, path, sizeof (path));
1729 (void) snprintf(path, sizeof (path),
1730 "\?\?\?<object#%llu>", (u_longlong_t)object);
1732 (void) printf("\tpath %s\n", path);
1734 dump_uidgid(os, uid, gid);
1735 (void) printf("\tatime %s", ctime(&z_atime));
1736 (void) printf("\tmtime %s", ctime(&z_mtime));
1737 (void) printf("\tctime %s", ctime(&z_ctime));
1738 (void) printf("\tcrtime %s", ctime(&z_crtime));
1739 (void) printf("\tgen %llu\n", (u_longlong_t)gen);
1740 (void) printf("\tmode %llo\n", (u_longlong_t)mode);
1741 (void) printf("\tsize %llu\n", (u_longlong_t)fsize);
1742 (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1743 (void) printf("\tlinks %llu\n", (u_longlong_t)links);
1744 (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1745 if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1746 sizeof (uint64_t)) == 0)
1747 (void) printf("\txattr %llu\n", (u_longlong_t)xattr);
1748 if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1749 sizeof (uint64_t)) == 0)
1750 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)rdev);
1751 sa_handle_destroy(hdl);
1756 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1762 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1766 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1767 dump_none, /* unallocated */
1768 dump_zap, /* object directory */
1769 dump_uint64, /* object array */
1770 dump_none, /* packed nvlist */
1771 dump_packed_nvlist, /* packed nvlist size */
1772 dump_none, /* bpobj */
1773 dump_bpobj, /* bpobj header */
1774 dump_none, /* SPA space map header */
1775 dump_none, /* SPA space map */
1776 dump_none, /* ZIL intent log */
1777 dump_dnode, /* DMU dnode */
1778 dump_dmu_objset, /* DMU objset */
1779 dump_dsl_dir, /* DSL directory */
1780 dump_zap, /* DSL directory child map */
1781 dump_zap, /* DSL dataset snap map */
1782 dump_zap, /* DSL props */
1783 dump_dsl_dataset, /* DSL dataset */
1784 dump_znode, /* ZFS znode */
1785 dump_acl, /* ZFS V0 ACL */
1786 dump_uint8, /* ZFS plain file */
1787 dump_zpldir, /* ZFS directory */
1788 dump_zap, /* ZFS master node */
1789 dump_zap, /* ZFS delete queue */
1790 dump_uint8, /* zvol object */
1791 dump_zap, /* zvol prop */
1792 dump_uint8, /* other uint8[] */
1793 dump_uint64, /* other uint64[] */
1794 dump_zap, /* other ZAP */
1795 dump_zap, /* persistent error log */
1796 dump_uint8, /* SPA history */
1797 dump_history_offsets, /* SPA history offsets */
1798 dump_zap, /* Pool properties */
1799 dump_zap, /* DSL permissions */
1800 dump_acl, /* ZFS ACL */
1801 dump_uint8, /* ZFS SYSACL */
1802 dump_none, /* FUID nvlist */
1803 dump_packed_nvlist, /* FUID nvlist size */
1804 dump_zap, /* DSL dataset next clones */
1805 dump_zap, /* DSL scrub queue */
1806 dump_zap, /* ZFS user/group used */
1807 dump_zap, /* ZFS user/group quota */
1808 dump_zap, /* snapshot refcount tags */
1809 dump_ddt_zap, /* DDT ZAP object */
1810 dump_zap, /* DDT statistics */
1811 dump_znode, /* SA object */
1812 dump_zap, /* SA Master Node */
1813 dump_sa_attrs, /* SA attribute registration */
1814 dump_sa_layouts, /* SA attribute layouts */
1815 dump_zap, /* DSL scrub translations */
1816 dump_none, /* fake dedup BP */
1817 dump_zap, /* deadlist */
1818 dump_none, /* deadlist hdr */
1819 dump_zap, /* dsl clones */
1820 dump_bpobj_subobjs, /* bpobj subobjs */
1821 dump_unknown, /* Unknown type, must be last */
1825 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1827 dmu_buf_t *db = NULL;
1828 dmu_object_info_t doi;
1832 char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1833 char bonus_size[32];
1837 if (*print_header) {
1838 (void) printf("\n%10s %3s %5s %5s %5s %5s %6s %s\n",
1839 "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1845 dn = DMU_META_DNODE(os);
1847 error = dmu_bonus_hold(os, object, FTAG, &db);
1849 fatal("dmu_bonus_hold(%llu) failed, errno %u",
1851 bonus = db->db_data;
1852 bsize = db->db_size;
1853 dn = DB_DNODE((dmu_buf_impl_t *)db);
1855 dmu_object_info_from_dnode(dn, &doi);
1857 zdb_nicenum(doi.doi_metadata_block_size, iblk);
1858 zdb_nicenum(doi.doi_data_block_size, dblk);
1859 zdb_nicenum(doi.doi_max_offset, lsize);
1860 zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1861 zdb_nicenum(doi.doi_bonus_size, bonus_size);
1862 (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1863 doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1864 doi.doi_max_offset);
1868 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1869 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1870 ZDB_CHECKSUM_NAME(doi.doi_checksum));
1873 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1874 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1875 ZDB_COMPRESS_NAME(doi.doi_compress));
1878 (void) printf("%10lld %3u %5s %5s %5s %5s %6s %s%s\n",
1879 (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1880 asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1882 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1883 (void) printf("%10s %3s %5s %5s %5s %5s %6s %s\n",
1884 "", "", "", "", "", bonus_size, "bonus",
1885 ZDB_OT_NAME(doi.doi_bonus_type));
1888 if (verbosity >= 4) {
1889 (void) printf("\tdnode flags: %s%s%s\n",
1890 (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1892 (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1893 "USERUSED_ACCOUNTED " : "",
1894 (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1895 "SPILL_BLKPTR" : "");
1896 (void) printf("\tdnode maxblkid: %llu\n",
1897 (longlong_t)dn->dn_phys->dn_maxblkid);
1899 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1901 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1908 if (verbosity >= 5) {
1910 * Report the list of segments that comprise the object.
1914 uint64_t blkfill = 1;
1917 if (dn->dn_type == DMU_OT_DNODE) {
1919 blkfill = DNODES_PER_BLOCK;
1924 error = dnode_next_offset(dn,
1925 0, &start, minlvl, blkfill, 0);
1929 error = dnode_next_offset(dn,
1930 DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1931 zdb_nicenum(end - start, segsize);
1932 (void) printf("\t\tsegment [%016llx, %016llx)"
1933 " size %5s\n", (u_longlong_t)start,
1934 (u_longlong_t)end, segsize);
1942 dmu_buf_rele(db, FTAG);
1945 static char *objset_types[DMU_OST_NUMTYPES] = {
1946 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1949 dump_dir(objset_t *os)
1951 dmu_objset_stats_t dds;
1952 uint64_t object, object_count;
1953 uint64_t refdbytes, usedobjs, scratch;
1955 char blkbuf[BP_SPRINTF_LEN + 20];
1956 char osname[ZFS_MAX_DATASET_NAME_LEN];
1957 char *type = "UNKNOWN";
1958 int verbosity = dump_opt['d'];
1959 int print_header = 1;
1962 dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1963 dmu_objset_fast_stat(os, &dds);
1964 dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1966 if (dds.dds_type < DMU_OST_NUMTYPES)
1967 type = objset_types[dds.dds_type];
1969 if (dds.dds_type == DMU_OST_META) {
1970 dds.dds_creation_txg = TXG_INITIAL;
1971 usedobjs = BP_GET_FILL(os->os_rootbp);
1972 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
1975 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1978 ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
1980 zdb_nicenum(refdbytes, numbuf);
1982 if (verbosity >= 4) {
1983 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1984 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1985 sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1990 dmu_objset_name(os, osname);
1992 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1993 "%s, %llu objects%s\n",
1994 osname, type, (u_longlong_t)dmu_objset_id(os),
1995 (u_longlong_t)dds.dds_creation_txg,
1996 numbuf, (u_longlong_t)usedobjs, blkbuf);
1998 if (zopt_objects != 0) {
1999 for (i = 0; i < zopt_objects; i++)
2000 dump_object(os, zopt_object[i], verbosity,
2002 (void) printf("\n");
2006 if (dump_opt['i'] != 0 || verbosity >= 2)
2007 dump_intent_log(dmu_objset_zil(os));
2009 if (dmu_objset_ds(os) != NULL)
2010 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
2015 if (BP_IS_HOLE(os->os_rootbp))
2018 dump_object(os, 0, verbosity, &print_header);
2020 if (DMU_USERUSED_DNODE(os) != NULL &&
2021 DMU_USERUSED_DNODE(os)->dn_type != 0) {
2022 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
2023 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
2027 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
2028 dump_object(os, object, verbosity, &print_header);
2032 ASSERT3U(object_count, ==, usedobjs);
2034 (void) printf("\n");
2036 if (error != ESRCH) {
2037 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
2043 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
2045 time_t timestamp = ub->ub_timestamp;
2047 (void) printf(header ? header : "");
2048 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
2049 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
2050 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
2051 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
2052 (void) printf("\ttimestamp = %llu UTC = %s",
2053 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp)));
2054 if (dump_opt['u'] >= 3) {
2055 char blkbuf[BP_SPRINTF_LEN];
2056 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
2057 (void) printf("\trootbp = %s\n", blkbuf);
2059 (void) printf(footer ? footer : "");
2063 dump_config(spa_t *spa)
2070 error = dmu_bonus_hold(spa->spa_meta_objset,
2071 spa->spa_config_object, FTAG, &db);
2074 nvsize = *(uint64_t *)db->db_data;
2075 dmu_buf_rele(db, FTAG);
2077 (void) printf("\nMOS Configuration:\n");
2078 dump_packed_nvlist(spa->spa_meta_objset,
2079 spa->spa_config_object, (void *)&nvsize, 1);
2081 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
2082 (u_longlong_t)spa->spa_config_object, error);
2087 dump_cachefile(const char *cachefile)
2090 struct stat64 statbuf;
2094 if ((fd = open64(cachefile, O_RDONLY)) < 0) {
2095 (void) fprintf(stderr, "cannot open '%s': %s\n", cachefile,
2100 if (fstat64(fd, &statbuf) != 0) {
2101 (void) fprintf(stderr, "failed to stat '%s': %s\n", cachefile,
2106 if ((buf = malloc(statbuf.st_size)) == NULL) {
2107 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
2108 (u_longlong_t)statbuf.st_size);
2112 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2113 (void) fprintf(stderr, "failed to read %llu bytes\n",
2114 (u_longlong_t)statbuf.st_size);
2120 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2121 (void) fprintf(stderr, "failed to unpack nvlist\n");
2127 dump_nvlist(config, 0);
2129 nvlist_free(config);
2132 #define ZDB_MAX_UB_HEADER_SIZE 32
2135 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
2139 char header[ZDB_MAX_UB_HEADER_SIZE];
2141 vd.vdev_ashift = ashift;
2142 vdp->vdev_top = vdp;
2144 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2145 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2146 uberblock_t *ub = (void *)((char *)lbl + uoff);
2148 if (uberblock_verify(ub))
2150 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2151 "Uberblock[%d]\n", i);
2152 dump_uberblock(ub, header, "");
2157 dump_label(const char *dev)
2161 char *path, *buf = label.vl_vdev_phys.vp_nvlist;
2162 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2163 struct stat64 statbuf;
2164 uint64_t psize, ashift;
2165 int len = strlen(dev) + 1;
2167 if (strncmp(dev, ZFS_DISK_ROOTD, strlen(ZFS_DISK_ROOTD)) == 0) {
2170 (void) snprintf(path, len, "%s%s", ZFS_RDISK_ROOTD,
2171 dev + strlen(ZFS_DISK_ROOTD));
2176 if ((fd = open64(path, O_RDONLY)) < 0) {
2177 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2182 if (fstat64(fd, &statbuf) != 0) {
2183 (void) printf("failed to stat '%s': %s\n", path,
2190 if (S_ISBLK(statbuf.st_mode)) {
2191 (void) printf("cannot use '%s': character device required\n",
2198 psize = statbuf.st_size;
2199 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2201 for (int l = 0; l < VDEV_LABELS; l++) {
2202 nvlist_t *config = NULL;
2204 (void) printf("--------------------------------------------\n");
2205 (void) printf("LABEL %d\n", l);
2206 (void) printf("--------------------------------------------\n");
2208 if (pread64(fd, &label, sizeof (label),
2209 vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2210 (void) printf("failed to read label %d\n", l);
2214 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2215 (void) printf("failed to unpack label %d\n", l);
2216 ashift = SPA_MINBLOCKSHIFT;
2218 nvlist_t *vdev_tree = NULL;
2220 dump_nvlist(config, 4);
2221 if ((nvlist_lookup_nvlist(config,
2222 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2223 (nvlist_lookup_uint64(vdev_tree,
2224 ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2225 ashift = SPA_MINBLOCKSHIFT;
2226 nvlist_free(config);
2229 dump_label_uberblocks(&label, ashift);
2236 static uint64_t dataset_feature_count[SPA_FEATURES];
2240 dump_one_dir(const char *dsname, void *arg)
2245 error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2247 (void) printf("Could not open %s, error %d\n", dsname, error);
2251 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
2252 if (!dmu_objset_ds(os)->ds_feature_inuse[f])
2254 ASSERT(spa_feature_table[f].fi_flags &
2255 ZFEATURE_FLAG_PER_DATASET);
2256 dataset_feature_count[f]++;
2260 dmu_objset_disown(os, FTAG);
2261 fuid_table_destroy();
2262 sa_loaded = B_FALSE;
2269 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2270 typedef struct zdb_blkstats {
2276 uint64_t zb_ditto_samevdev;
2277 uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2281 * Extended object types to report deferred frees and dedup auto-ditto blocks.
2283 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2284 #define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1)
2285 #define ZDB_OT_OTHER (DMU_OT_NUMTYPES + 2)
2286 #define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 3)
2288 static char *zdb_ot_extname[] = {
2295 #define ZB_TOTAL DN_MAX_LEVELS
2297 typedef struct zdb_cb {
2298 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2299 uint64_t zcb_dedup_asize;
2300 uint64_t zcb_dedup_blocks;
2301 uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2302 uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2305 uint64_t zcb_lastprint;
2306 uint64_t zcb_totalasize;
2307 uint64_t zcb_errors[256];
2314 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2315 dmu_object_type_t type)
2317 uint64_t refcnt = 0;
2319 ASSERT(type < ZDB_OT_TOTAL);
2321 if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2324 for (int i = 0; i < 4; i++) {
2325 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2326 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2328 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2330 zb->zb_asize += BP_GET_ASIZE(bp);
2331 zb->zb_lsize += BP_GET_LSIZE(bp);
2332 zb->zb_psize += BP_GET_PSIZE(bp);
2336 * The histogram is only big enough to record blocks up to
2337 * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2340 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2341 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2342 zb->zb_psize_histogram[idx]++;
2344 zb->zb_gangs += BP_COUNT_GANG(bp);
2346 switch (BP_GET_NDVAS(bp)) {
2348 if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2349 DVA_GET_VDEV(&bp->blk_dva[1]))
2350 zb->zb_ditto_samevdev++;
2353 equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2354 DVA_GET_VDEV(&bp->blk_dva[1])) +
2355 (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2356 DVA_GET_VDEV(&bp->blk_dva[2])) +
2357 (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2358 DVA_GET_VDEV(&bp->blk_dva[2]));
2360 zb->zb_ditto_samevdev++;
2366 if (BP_IS_EMBEDDED(bp)) {
2367 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2368 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2369 [BPE_GET_PSIZE(bp)]++;
2376 if (BP_GET_DEDUP(bp)) {
2380 ddt = ddt_select(zcb->zcb_spa, bp);
2382 dde = ddt_lookup(ddt, bp, B_FALSE);
2387 ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2388 ddt_phys_decref(ddp);
2389 refcnt = ddp->ddp_refcnt;
2390 if (ddt_phys_total_refcnt(dde) == 0)
2391 ddt_remove(ddt, dde);
2396 VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2397 refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2398 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2403 zdb_blkptr_done(zio_t *zio)
2405 spa_t *spa = zio->io_spa;
2406 blkptr_t *bp = zio->io_bp;
2407 int ioerr = zio->io_error;
2408 zdb_cb_t *zcb = zio->io_private;
2409 zbookmark_phys_t *zb = &zio->io_bookmark;
2411 zio_data_buf_free(zio->io_data, zio->io_size);
2413 mutex_enter(&spa->spa_scrub_lock);
2414 spa->spa_scrub_inflight--;
2415 cv_broadcast(&spa->spa_scrub_io_cv);
2417 if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2418 char blkbuf[BP_SPRINTF_LEN];
2420 zcb->zcb_haderrors = 1;
2421 zcb->zcb_errors[ioerr]++;
2423 if (dump_opt['b'] >= 2)
2424 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2428 (void) printf("zdb_blkptr_cb: "
2429 "Got error %d reading "
2430 "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2432 (u_longlong_t)zb->zb_objset,
2433 (u_longlong_t)zb->zb_object,
2434 (u_longlong_t)zb->zb_level,
2435 (u_longlong_t)zb->zb_blkid,
2438 mutex_exit(&spa->spa_scrub_lock);
2443 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2444 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2446 zdb_cb_t *zcb = arg;
2447 dmu_object_type_t type;
2448 boolean_t is_metadata;
2453 if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2454 char blkbuf[BP_SPRINTF_LEN];
2455 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2456 (void) printf("objset %llu object %llu "
2457 "level %lld offset 0x%llx %s\n",
2458 (u_longlong_t)zb->zb_objset,
2459 (u_longlong_t)zb->zb_object,
2460 (longlong_t)zb->zb_level,
2461 (u_longlong_t)blkid2offset(dnp, bp, zb),
2468 type = BP_GET_TYPE(bp);
2470 zdb_count_block(zcb, zilog, bp,
2471 (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2473 is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2475 if (!BP_IS_EMBEDDED(bp) &&
2476 (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2477 size_t size = BP_GET_PSIZE(bp);
2478 void *data = zio_data_buf_alloc(size);
2479 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2481 /* If it's an intent log block, failure is expected. */
2482 if (zb->zb_level == ZB_ZIL_LEVEL)
2483 flags |= ZIO_FLAG_SPECULATIVE;
2485 mutex_enter(&spa->spa_scrub_lock);
2486 while (spa->spa_scrub_inflight > max_inflight)
2487 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2488 spa->spa_scrub_inflight++;
2489 mutex_exit(&spa->spa_scrub_lock);
2491 zio_nowait(zio_read(NULL, spa, bp, data, size,
2492 zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2495 zcb->zcb_readfails = 0;
2497 /* only call gethrtime() every 100 blocks */
2504 if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2505 uint64_t now = gethrtime();
2507 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2509 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2511 (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2513 zfs_nicenum(bytes, buf, sizeof (buf));
2514 (void) fprintf(stderr,
2515 "\r%5s completed (%4dMB/s) "
2516 "estimated time remaining: %uhr %02umin %02usec ",
2517 buf, kb_per_sec / 1024,
2518 sec_remaining / 60 / 60,
2519 sec_remaining / 60 % 60,
2520 sec_remaining % 60);
2522 zcb->zcb_lastprint = now;
2529 zdb_leak(void *arg, uint64_t start, uint64_t size)
2533 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2534 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2537 static metaslab_ops_t zdb_metaslab_ops = {
2542 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2544 ddt_bookmark_t ddb = { 0 };
2548 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2550 ddt_phys_t *ddp = dde.dde_phys;
2552 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2555 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2557 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2558 if (ddp->ddp_phys_birth == 0)
2560 ddt_bp_create(ddb.ddb_checksum,
2561 &dde.dde_key, ddp, &blk);
2562 if (p == DDT_PHYS_DITTO) {
2563 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2565 zcb->zcb_dedup_asize +=
2566 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2567 zcb->zcb_dedup_blocks++;
2570 if (!dump_opt['L']) {
2571 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2573 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2578 ASSERT(error == ENOENT);
2582 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2586 if (!dump_opt['L']) {
2587 vdev_t *rvd = spa->spa_root_vdev;
2590 * We are going to be changing the meaning of the metaslab's
2591 * ms_tree. Ensure that the allocator doesn't try to
2594 spa->spa_normal_class->mc_ops = &zdb_metaslab_ops;
2595 spa->spa_log_class->mc_ops = &zdb_metaslab_ops;
2597 for (uint64_t c = 0; c < rvd->vdev_children; c++) {
2598 vdev_t *vd = rvd->vdev_child[c];
2599 metaslab_group_t *mg = vd->vdev_mg;
2600 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) {
2601 metaslab_t *msp = vd->vdev_ms[m];
2602 ASSERT3P(msp->ms_group, ==, mg);
2603 mutex_enter(&msp->ms_lock);
2604 metaslab_unload(msp);
2607 * For leak detection, we overload the metaslab
2608 * ms_tree to contain allocated segments
2609 * instead of free segments. As a result,
2610 * we can't use the normal metaslab_load/unload
2613 if (msp->ms_sm != NULL) {
2614 (void) fprintf(stderr,
2615 "\rloading space map for "
2616 "vdev %llu of %llu, "
2617 "metaslab %llu of %llu ...",
2619 (longlong_t)rvd->vdev_children,
2621 (longlong_t)vd->vdev_ms_count);
2624 * We don't want to spend the CPU
2625 * manipulating the size-ordered
2626 * tree, so clear the range_tree
2629 msp->ms_tree->rt_ops = NULL;
2630 VERIFY0(space_map_load(msp->ms_sm,
2631 msp->ms_tree, SM_ALLOC));
2633 if (!msp->ms_loaded) {
2634 msp->ms_loaded = B_TRUE;
2637 mutex_exit(&msp->ms_lock);
2640 (void) fprintf(stderr, "\n");
2643 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2645 zdb_ddt_leak_init(spa, zcb);
2647 spa_config_exit(spa, SCL_CONFIG, FTAG);
2651 zdb_leak_fini(spa_t *spa)
2653 if (!dump_opt['L']) {
2654 vdev_t *rvd = spa->spa_root_vdev;
2655 for (int c = 0; c < rvd->vdev_children; c++) {
2656 vdev_t *vd = rvd->vdev_child[c];
2657 metaslab_group_t *mg = vd->vdev_mg;
2658 for (int m = 0; m < vd->vdev_ms_count; m++) {
2659 metaslab_t *msp = vd->vdev_ms[m];
2660 ASSERT3P(mg, ==, msp->ms_group);
2661 mutex_enter(&msp->ms_lock);
2664 * The ms_tree has been overloaded to
2665 * contain allocated segments. Now that we
2666 * finished traversing all blocks, any
2667 * block that remains in the ms_tree
2668 * represents an allocated block that we
2669 * did not claim during the traversal.
2670 * Claimed blocks would have been removed
2673 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2675 if (msp->ms_loaded) {
2676 msp->ms_loaded = B_FALSE;
2679 mutex_exit(&msp->ms_lock);
2687 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2689 zdb_cb_t *zcb = arg;
2691 if (dump_opt['b'] >= 5) {
2692 char blkbuf[BP_SPRINTF_LEN];
2693 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2694 (void) printf("[%s] %s\n",
2695 "deferred free", blkbuf);
2697 zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2702 dump_block_stats(spa_t *spa)
2704 zdb_cb_t zcb = { 0 };
2705 zdb_blkstats_t *zb, *tzb;
2706 uint64_t norm_alloc, norm_space, total_alloc, total_found;
2707 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2708 boolean_t leaks = B_FALSE;
2710 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2711 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2712 (dump_opt['c'] == 1) ? "metadata " : "",
2713 dump_opt['c'] ? "checksums " : "",
2714 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2715 !dump_opt['L'] ? "nothing leaked " : "");
2718 * Load all space maps as SM_ALLOC maps, then traverse the pool
2719 * claiming each block we discover. If the pool is perfectly
2720 * consistent, the space maps will be empty when we're done.
2721 * Anything left over is a leak; any block we can't claim (because
2722 * it's not part of any space map) is a double allocation,
2723 * reference to a freed block, or an unclaimed log block.
2725 zdb_leak_init(spa, &zcb);
2728 * If there's a deferred-free bplist, process that first.
2730 (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2731 count_block_cb, &zcb, NULL);
2732 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2733 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2734 count_block_cb, &zcb, NULL);
2736 if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2737 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2738 spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2742 if (dump_opt['c'] > 1)
2743 flags |= TRAVERSE_PREFETCH_DATA;
2745 zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2746 zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2747 zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2750 * If we've traversed the data blocks then we need to wait for those
2751 * I/Os to complete. We leverage "The Godfather" zio to wait on
2752 * all async I/Os to complete.
2754 if (dump_opt['c']) {
2755 for (int i = 0; i < max_ncpus; i++) {
2756 (void) zio_wait(spa->spa_async_zio_root[i]);
2757 spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
2758 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2759 ZIO_FLAG_GODFATHER);
2763 if (zcb.zcb_haderrors) {
2764 (void) printf("\nError counts:\n\n");
2765 (void) printf("\t%5s %s\n", "errno", "count");
2766 for (int e = 0; e < 256; e++) {
2767 if (zcb.zcb_errors[e] != 0) {
2768 (void) printf("\t%5d %llu\n",
2769 e, (u_longlong_t)zcb.zcb_errors[e]);
2775 * Report any leaked segments.
2779 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2781 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2782 norm_space = metaslab_class_get_space(spa_normal_class(spa));
2784 total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2785 total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2787 if (total_found == total_alloc) {
2789 (void) printf("\n\tNo leaks (block sum matches space"
2790 " maps exactly)\n");
2792 (void) printf("block traversal size %llu != alloc %llu "
2794 (u_longlong_t)total_found,
2795 (u_longlong_t)total_alloc,
2796 (dump_opt['L']) ? "unreachable" : "leaked",
2797 (longlong_t)(total_alloc - total_found));
2801 if (tzb->zb_count == 0)
2804 (void) printf("\n");
2805 (void) printf("\tbp count: %10llu\n",
2806 (u_longlong_t)tzb->zb_count);
2807 (void) printf("\tganged count: %10llu\n",
2808 (longlong_t)tzb->zb_gangs);
2809 (void) printf("\tbp logical: %10llu avg: %6llu\n",
2810 (u_longlong_t)tzb->zb_lsize,
2811 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2812 (void) printf("\tbp physical: %10llu avg:"
2813 " %6llu compression: %6.2f\n",
2814 (u_longlong_t)tzb->zb_psize,
2815 (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2816 (double)tzb->zb_lsize / tzb->zb_psize);
2817 (void) printf("\tbp allocated: %10llu avg:"
2818 " %6llu compression: %6.2f\n",
2819 (u_longlong_t)tzb->zb_asize,
2820 (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2821 (double)tzb->zb_lsize / tzb->zb_asize);
2822 (void) printf("\tbp deduped: %10llu ref>1:"
2823 " %6llu deduplication: %6.2f\n",
2824 (u_longlong_t)zcb.zcb_dedup_asize,
2825 (u_longlong_t)zcb.zcb_dedup_blocks,
2826 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2827 (void) printf("\tSPA allocated: %10llu used: %5.2f%%\n",
2828 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2830 for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2831 if (zcb.zcb_embedded_blocks[i] == 0)
2833 (void) printf("\n");
2834 (void) printf("\tadditional, non-pointer bps of type %u: "
2836 i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2838 if (dump_opt['b'] >= 3) {
2839 (void) printf("\t number of (compressed) bytes: "
2841 dump_histogram(zcb.zcb_embedded_histogram[i],
2842 sizeof (zcb.zcb_embedded_histogram[i]) /
2843 sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
2847 if (tzb->zb_ditto_samevdev != 0) {
2848 (void) printf("\tDittoed blocks on same vdev: %llu\n",
2849 (longlong_t)tzb->zb_ditto_samevdev);
2852 if (dump_opt['b'] >= 2) {
2854 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2855 "\t avg\t comp\t%%Total\tType\n");
2857 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2858 char csize[32], lsize[32], psize[32], asize[32];
2859 char avg[32], gang[32];
2862 if (t < DMU_OT_NUMTYPES)
2863 typename = dmu_ot[t].ot_name;
2865 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2867 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2868 (void) printf("%6s\t%5s\t%5s\t%5s"
2869 "\t%5s\t%5s\t%6s\t%s\n",
2881 for (l = ZB_TOTAL - 1; l >= -1; l--) {
2882 level = (l == -1 ? ZB_TOTAL : l);
2883 zb = &zcb.zcb_type[level][t];
2885 if (zb->zb_asize == 0)
2888 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2891 if (level == 0 && zb->zb_asize ==
2892 zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2895 zdb_nicenum(zb->zb_count, csize);
2896 zdb_nicenum(zb->zb_lsize, lsize);
2897 zdb_nicenum(zb->zb_psize, psize);
2898 zdb_nicenum(zb->zb_asize, asize);
2899 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2900 zdb_nicenum(zb->zb_gangs, gang);
2902 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2904 csize, lsize, psize, asize, avg,
2905 (double)zb->zb_lsize / zb->zb_psize,
2906 100.0 * zb->zb_asize / tzb->zb_asize);
2908 if (level == ZB_TOTAL)
2909 (void) printf("%s\n", typename);
2911 (void) printf(" L%d %s\n",
2914 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2915 (void) printf("\t number of ganged "
2916 "blocks: %s\n", gang);
2919 if (dump_opt['b'] >= 4) {
2920 (void) printf("psize "
2921 "(in 512-byte sectors): "
2922 "number of blocks\n");
2923 dump_histogram(zb->zb_psize_histogram,
2924 PSIZE_HISTO_SIZE, 0);
2930 (void) printf("\n");
2935 if (zcb.zcb_haderrors)
2941 typedef struct zdb_ddt_entry {
2943 uint64_t zdde_ref_blocks;
2944 uint64_t zdde_ref_lsize;
2945 uint64_t zdde_ref_psize;
2946 uint64_t zdde_ref_dsize;
2947 avl_node_t zdde_node;
2952 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2953 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2955 avl_tree_t *t = arg;
2957 zdb_ddt_entry_t *zdde, zdde_search;
2959 if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
2962 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2963 (void) printf("traversing objset %llu, %llu objects, "
2964 "%lu blocks so far\n",
2965 (u_longlong_t)zb->zb_objset,
2966 (u_longlong_t)BP_GET_FILL(bp),
2970 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2971 BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2974 ddt_key_fill(&zdde_search.zdde_key, bp);
2976 zdde = avl_find(t, &zdde_search, &where);
2979 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2980 zdde->zdde_key = zdde_search.zdde_key;
2981 avl_insert(t, zdde, where);
2984 zdde->zdde_ref_blocks += 1;
2985 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2986 zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2987 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2993 dump_simulated_ddt(spa_t *spa)
2996 void *cookie = NULL;
2997 zdb_ddt_entry_t *zdde;
2998 ddt_histogram_t ddh_total = { 0 };
2999 ddt_stat_t dds_total = { 0 };
3001 avl_create(&t, ddt_entry_compare,
3002 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
3004 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3006 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
3007 zdb_ddt_add_cb, &t);
3009 spa_config_exit(spa, SCL_CONFIG, FTAG);
3011 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
3013 uint64_t refcnt = zdde->zdde_ref_blocks;
3014 ASSERT(refcnt != 0);
3016 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
3017 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
3018 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
3019 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
3021 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
3022 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
3023 dds.dds_ref_psize = zdde->zdde_ref_psize;
3024 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
3026 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
3029 umem_free(zdde, sizeof (*zdde));
3034 ddt_histogram_stat(&dds_total, &ddh_total);
3036 (void) printf("Simulated DDT histogram:\n");
3038 zpool_dump_ddt(&dds_total, &ddh_total);
3040 dump_dedup_ratio(&dds_total);
3044 dump_zpool(spa_t *spa)
3046 dsl_pool_t *dp = spa_get_dsl(spa);
3049 if (dump_opt['S']) {
3050 dump_simulated_ddt(spa);
3054 if (!dump_opt['e'] && dump_opt['C'] > 1) {
3055 (void) printf("\nCached configuration:\n");
3056 dump_nvlist(spa->spa_config, 8);
3063 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
3068 if (dump_opt['d'] > 2 || dump_opt['m'])
3069 dump_metaslabs(spa);
3071 dump_metaslab_groups(spa);
3073 if (dump_opt['d'] || dump_opt['i']) {
3074 dump_dir(dp->dp_meta_objset);
3075 if (dump_opt['d'] >= 3) {
3076 dump_full_bpobj(&spa->spa_deferred_bpobj,
3077 "Deferred frees", 0);
3078 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3080 &spa->spa_dsl_pool->dp_free_bpobj,
3081 "Pool snapshot frees", 0);
3084 if (spa_feature_is_active(spa,
3085 SPA_FEATURE_ASYNC_DESTROY)) {
3086 dump_bptree(spa->spa_meta_objset,
3087 spa->spa_dsl_pool->dp_bptree_obj,
3088 "Pool dataset frees");
3090 dump_dtl(spa->spa_root_vdev, 0);
3092 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
3093 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
3095 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
3098 if (!(spa_feature_table[f].fi_flags &
3099 ZFEATURE_FLAG_PER_DATASET)) {
3100 ASSERT0(dataset_feature_count[f]);
3103 (void) feature_get_refcount(spa,
3104 &spa_feature_table[f], &refcount);
3105 if (dataset_feature_count[f] != refcount) {
3106 (void) printf("%s feature refcount mismatch: "
3107 "%lld datasets != %lld refcount\n",
3108 spa_feature_table[f].fi_uname,
3109 (longlong_t)dataset_feature_count[f],
3110 (longlong_t)refcount);
3113 (void) printf("Verified %s feature refcount "
3114 "of %llu is correct\n",
3115 spa_feature_table[f].fi_uname,
3116 (longlong_t)refcount);
3120 if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
3121 rc = dump_block_stats(spa);
3124 rc = verify_spacemap_refcounts(spa);
3127 show_pool_stats(spa);
3133 dump_debug_buffer();
3138 #define ZDB_FLAG_CHECKSUM 0x0001
3139 #define ZDB_FLAG_DECOMPRESS 0x0002
3140 #define ZDB_FLAG_BSWAP 0x0004
3141 #define ZDB_FLAG_GBH 0x0008
3142 #define ZDB_FLAG_INDIRECT 0x0010
3143 #define ZDB_FLAG_PHYS 0x0020
3144 #define ZDB_FLAG_RAW 0x0040
3145 #define ZDB_FLAG_PRINT_BLKPTR 0x0080
3150 zdb_print_blkptr(blkptr_t *bp, int flags)
3152 char blkbuf[BP_SPRINTF_LEN];
3154 if (flags & ZDB_FLAG_BSWAP)
3155 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3157 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3158 (void) printf("%s\n", blkbuf);
3162 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3166 for (i = 0; i < nbps; i++)
3167 zdb_print_blkptr(&bp[i], flags);
3171 zdb_dump_gbh(void *buf, int flags)
3173 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3177 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3179 if (flags & ZDB_FLAG_BSWAP)
3180 byteswap_uint64_array(buf, size);
3181 (void) write(1, buf, size);
3185 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3187 uint64_t *d = (uint64_t *)buf;
3188 int nwords = size / sizeof (uint64_t);
3189 int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3195 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8";
3197 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f";
3199 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr);
3201 for (i = 0; i < nwords; i += 2) {
3202 (void) printf("%06llx: %016llx %016llx ",
3203 (u_longlong_t)(i * sizeof (uint64_t)),
3204 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3205 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3208 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3209 (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3210 (void) printf("\n");
3215 * There are two acceptable formats:
3216 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a
3217 * child[.child]* - For example: 0.1.1
3219 * The second form can be used to specify arbitrary vdevs anywhere
3220 * in the heirarchy. For example, in a pool with a mirror of
3221 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3224 zdb_vdev_lookup(vdev_t *vdev, char *path)
3232 /* First, assume the x.x.x.x format */
3233 i = (int)strtoul(path, &s, 10);
3234 if (s == path || (s && *s != '.' && *s != '\0'))
3236 if (i < 0 || i >= vdev->vdev_children)
3239 vdev = vdev->vdev_child[i];
3242 return (zdb_vdev_lookup(vdev, s+1));
3245 for (i = 0; i < vdev->vdev_children; i++) {
3246 vdev_t *vc = vdev->vdev_child[i];
3248 if (vc->vdev_path == NULL) {
3249 vc = zdb_vdev_lookup(vc, path);
3256 p = strrchr(vc->vdev_path, '/');
3257 p = p ? p + 1 : vc->vdev_path;
3258 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3260 if (strcmp(vc->vdev_path, path) == 0)
3262 if (strcmp(p, path) == 0)
3264 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3272 * Read a block from a pool and print it out. The syntax of the
3273 * block descriptor is:
3275 * pool:vdev_specifier:offset:size[:flags]
3277 * pool - The name of the pool you wish to read from
3278 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3279 * offset - offset, in hex, in bytes
3280 * size - Amount of data to read, in hex, in bytes
3281 * flags - A string of characters specifying options
3282 * b: Decode a blkptr at given offset within block
3283 * *c: Calculate and display checksums
3284 * d: Decompress data before dumping
3285 * e: Byteswap data before dumping
3286 * g: Display data as a gang block header
3287 * i: Display as an indirect block
3288 * p: Do I/O to physical offset
3289 * r: Dump raw data to stdout
3291 * * = not yet implemented
3294 zdb_read_block(char *thing, spa_t *spa)
3296 blkptr_t blk, *bp = &blk;
3297 dva_t *dva = bp->blk_dva;
3299 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3302 void *pbuf, *lbuf, *buf;
3303 char *s, *p, *dup, *vdev, *flagstr;
3306 dup = strdup(thing);
3307 s = strtok(dup, ":");
3309 s = strtok(NULL, ":");
3310 offset = strtoull(s ? s : "", NULL, 16);
3311 s = strtok(NULL, ":");
3312 size = strtoull(s ? s : "", NULL, 16);
3313 s = strtok(NULL, ":");
3314 flagstr = s ? s : "";
3318 s = "size must not be zero";
3319 if (!IS_P2ALIGNED(size, DEV_BSIZE))
3320 s = "size must be a multiple of sector size";
3321 if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3322 s = "offset must be a multiple of sector size";
3324 (void) printf("Invalid block specifier: %s - %s\n", thing, s);
3329 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3330 for (i = 0; flagstr[i]; i++) {
3331 int bit = flagbits[(uchar_t)flagstr[i]];
3334 (void) printf("***Invalid flag: %c\n",
3340 /* If it's not something with an argument, keep going */
3341 if ((bit & (ZDB_FLAG_CHECKSUM |
3342 ZDB_FLAG_PRINT_BLKPTR)) == 0)
3345 p = &flagstr[i + 1];
3346 if (bit == ZDB_FLAG_PRINT_BLKPTR)
3347 blkptr_offset = strtoull(p, &p, 16);
3348 if (*p != ':' && *p != '\0') {
3349 (void) printf("***Invalid flag arg: '%s'\n", s);
3353 i += p - &flagstr[i + 1]; /* skip over the number */
3357 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3359 (void) printf("***Invalid vdev: %s\n", vdev);
3364 (void) fprintf(stderr, "Found vdev: %s\n",
3367 (void) fprintf(stderr, "Found vdev type: %s\n",
3368 vd->vdev_ops->vdev_op_type);
3374 pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3375 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3379 DVA_SET_VDEV(&dva[0], vd->vdev_id);
3380 DVA_SET_OFFSET(&dva[0], offset);
3381 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3382 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3384 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3386 BP_SET_LSIZE(bp, lsize);
3387 BP_SET_PSIZE(bp, psize);
3388 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3389 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3390 BP_SET_TYPE(bp, DMU_OT_NONE);
3391 BP_SET_LEVEL(bp, 0);
3392 BP_SET_DEDUP(bp, 0);
3393 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3395 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3396 zio = zio_root(spa, NULL, NULL, 0);
3398 if (vd == vd->vdev_top) {
3400 * Treat this as a normal block read.
3402 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3403 ZIO_PRIORITY_SYNC_READ,
3404 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3407 * Treat this as a vdev child I/O.
3409 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3410 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3411 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3412 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3413 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3416 error = zio_wait(zio);
3417 spa_config_exit(spa, SCL_STATE, FTAG);
3420 (void) printf("Read of %s failed, error: %d\n", thing, error);
3424 if (flags & ZDB_FLAG_DECOMPRESS) {
3426 * We don't know how the data was compressed, so just try
3427 * every decompress function at every inflated blocksize.
3429 enum zio_compress c;
3430 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3431 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3433 bcopy(pbuf, pbuf2, psize);
3435 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3436 SPA_MAXBLOCKSIZE - psize) == 0);
3438 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3439 SPA_MAXBLOCKSIZE - psize) == 0);
3441 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3442 lsize -= SPA_MINBLOCKSIZE) {
3443 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3444 if (zio_decompress_data(c, pbuf, lbuf,
3445 psize, lsize) == 0 &&
3446 zio_decompress_data(c, pbuf2, lbuf2,
3447 psize, lsize) == 0 &&
3448 bcmp(lbuf, lbuf2, lsize) == 0)
3451 if (c != ZIO_COMPRESS_FUNCTIONS)
3453 lsize -= SPA_MINBLOCKSIZE;
3456 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3457 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3459 if (lsize <= psize) {
3460 (void) printf("Decompress of %s failed\n", thing);
3470 if (flags & ZDB_FLAG_PRINT_BLKPTR)
3471 zdb_print_blkptr((blkptr_t *)(void *)
3472 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3473 else if (flags & ZDB_FLAG_RAW)
3474 zdb_dump_block_raw(buf, size, flags);
3475 else if (flags & ZDB_FLAG_INDIRECT)
3476 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3478 else if (flags & ZDB_FLAG_GBH)
3479 zdb_dump_gbh(buf, flags);
3481 zdb_dump_block(thing, buf, size, flags);
3484 umem_free(pbuf, SPA_MAXBLOCKSIZE);
3485 umem_free(lbuf, SPA_MAXBLOCKSIZE);
3490 pool_match(nvlist_t *cfg, char *tgt)
3492 uint64_t v, guid = strtoull(tgt, NULL, 0);
3496 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3499 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3500 return (strcmp(s, tgt) == 0);
3506 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3509 nvlist_t *match = NULL;
3514 importargs_t args = { 0 };
3518 args.can_be_active = B_TRUE;
3520 if ((sepp = strpbrk(*target, "/@")) != NULL) {
3525 pools = zpool_search_import(g_zfs, &args);
3527 if (pools != NULL) {
3528 nvpair_t *elem = NULL;
3529 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3530 verify(nvpair_value_nvlist(elem, configp) == 0);
3531 if (pool_match(*configp, *target)) {
3533 if (match != NULL) {
3534 /* print previously found config */
3536 (void) printf("%s\n", name);
3537 dump_nvlist(match, 8);
3540 (void) printf("%s\n",
3542 dump_nvlist(*configp, 8);
3545 name = nvpair_name(elem);
3551 (void) fatal("\tMatched %d pools - use pool GUID "
3552 "instead of pool name or \n"
3553 "\tpool name part of a dataset name to select pool", count);
3558 * If pool GUID was specified for pool id, replace it with pool name
3560 if (name && (strstr(*target, name) != *target)) {
3561 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3563 *target = umem_alloc(sz, UMEM_NOFAIL);
3564 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3567 *configp = name ? match : NULL;
3573 main(int argc, char **argv)
3576 struct rlimit rl = { 1024, 1024 };
3578 objset_t *os = NULL;
3582 char **searchdirs = NULL;
3585 nvlist_t *policy = NULL;
3586 uint64_t max_txg = UINT64_MAX;
3587 int rewind = ZPOOL_NEVER_REWIND;
3588 char *spa_config_path_env;
3589 boolean_t target_is_spa = B_TRUE;
3591 (void) setrlimit(RLIMIT_NOFILE, &rl);
3592 (void) enable_extended_FILE_stdio(-1, -1);
3594 dprintf_setup(&argc, argv);
3597 * If there is an environment variable SPA_CONFIG_PATH it overrides
3598 * default spa_config_path setting. If -U flag is specified it will
3599 * override this environment variable settings once again.
3601 spa_config_path_env = getenv("SPA_CONFIG_PATH");
3602 if (spa_config_path_env != NULL)
3603 spa_config_path = spa_config_path_env;
3605 while ((c = getopt(argc, argv,
3606 "bcdhilmMI:suCDRSAFLXx:evp:t:U:PG")) != -1) {
3635 max_inflight = strtoull(optarg, NULL, 0);
3636 if (max_inflight == 0) {
3637 (void) fprintf(stderr, "maximum number "
3638 "of inflight I/Os must be greater "
3644 if (searchdirs == NULL) {
3645 searchdirs = umem_alloc(sizeof (char *),
3648 char **tmp = umem_alloc((nsearch + 1) *
3649 sizeof (char *), UMEM_NOFAIL);
3650 bcopy(searchdirs, tmp, nsearch *
3652 umem_free(searchdirs,
3653 nsearch * sizeof (char *));
3656 searchdirs[nsearch++] = optarg;
3659 max_txg = strtoull(optarg, NULL, 0);
3660 if (max_txg < TXG_INITIAL) {
3661 (void) fprintf(stderr, "incorrect txg "
3662 "specified: %s\n", optarg);
3667 spa_config_path = optarg;
3673 vn_dumpdir = optarg;
3681 if (!dump_opt['e'] && searchdirs != NULL) {
3682 (void) fprintf(stderr, "-p option requires use of -e\n");
3687 * ZDB does not typically re-read blocks; therefore limit the ARC
3688 * to 256 MB, which can be used entirely for metadata.
3690 zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
3693 * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
3694 * "zdb -b" uses traversal prefetch which uses async reads.
3695 * For good performance, let several of them be active at once.
3697 zfs_vdev_async_read_max_active = 10;
3700 g_zfs = libzfs_init();
3702 fatal("Fail to initialize zfs");
3705 verbose = MAX(verbose, 1);
3707 for (c = 0; c < 256; c++) {
3708 if (dump_all && !strchr("elAFLRSXP", c))
3711 dump_opt[c] += verbose;
3714 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3715 zfs_recover = (dump_opt['A'] > 1);
3720 if (argc < 2 && dump_opt['R'])
3723 if (!dump_opt['e'] && dump_opt['C']) {
3724 dump_cachefile(spa_config_path);
3730 if (dump_opt['l']) {
3731 dump_label(argv[0]);
3735 if (dump_opt['X'] || dump_opt['F'])
3736 rewind = ZPOOL_DO_REWIND |
3737 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3739 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3740 nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3741 nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3742 fatal("internal error: %s", strerror(ENOMEM));
3747 if (dump_opt['e']) {
3748 nvlist_t *cfg = NULL;
3749 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3753 if (dump_opt['C'] > 1) {
3754 (void) printf("\nConfiguration for import:\n");
3755 dump_nvlist(cfg, 8);
3757 if (nvlist_add_nvlist(cfg,
3758 ZPOOL_REWIND_POLICY, policy) != 0) {
3759 fatal("can't open '%s': %s",
3760 target, strerror(ENOMEM));
3762 if ((error = spa_import(name, cfg, NULL,
3763 ZFS_IMPORT_MISSING_LOG)) != 0) {
3764 error = spa_import(name, cfg, NULL,
3765 ZFS_IMPORT_VERBATIM);
3770 if (strpbrk(target, "/@") != NULL) {
3773 target_is_spa = B_FALSE;
3775 * Remove any trailing slash. Later code would get confused
3776 * by it, but we want to allow it so that "pool/" can
3777 * indicate that we want to dump the topmost filesystem,
3778 * rather than the whole pool.
3780 targetlen = strlen(target);
3781 if (targetlen != 0 && target[targetlen - 1] == '/')
3782 target[targetlen - 1] = '\0';
3786 if (target_is_spa || dump_opt['R']) {
3787 error = spa_open_rewind(target, &spa, FTAG, policy,
3791 * If we're missing the log device then
3792 * try opening the pool after clearing the
3795 mutex_enter(&spa_namespace_lock);
3796 if ((spa = spa_lookup(target)) != NULL &&
3797 spa->spa_log_state == SPA_LOG_MISSING) {
3798 spa->spa_log_state = SPA_LOG_CLEAR;
3801 mutex_exit(&spa_namespace_lock);
3804 error = spa_open_rewind(target, &spa,
3805 FTAG, policy, NULL);
3809 error = dmu_objset_own(target, DMU_OST_ANY,
3813 nvlist_free(policy);
3816 fatal("can't open '%s': %s", target, strerror(error));
3820 if (!dump_opt['R']) {
3822 zopt_objects = argc;
3823 zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3824 for (i = 0; i < zopt_objects; i++) {
3826 zopt_object[i] = strtoull(argv[i], NULL, 0);
3827 if (zopt_object[i] == 0 && errno != 0)
3828 fatal("bad number %s: %s",
3829 argv[i], strerror(errno));
3834 } else if (zopt_objects > 0 && !dump_opt['m']) {
3835 dump_dir(spa->spa_meta_objset);
3840 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3841 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3842 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3843 flagbits['e'] = ZDB_FLAG_BSWAP;
3844 flagbits['g'] = ZDB_FLAG_GBH;
3845 flagbits['i'] = ZDB_FLAG_INDIRECT;
3846 flagbits['p'] = ZDB_FLAG_PHYS;
3847 flagbits['r'] = ZDB_FLAG_RAW;
3849 for (i = 0; i < argc; i++)
3850 zdb_read_block(argv[i], spa);
3853 (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3855 fuid_table_destroy();
3856 sa_loaded = B_FALSE;
3858 dump_debug_buffer();