cmd/zdb/zdb.c

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