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(void)
  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         int p;
 649
 650         for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 651                 if (ddp->ddp_phys_birth == 0)
 652                         continue;
 653                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 654                 sprintf_blkptr(blkbuf, &blk);
 655                 (void) printf("index %llx refcnt %llu %s %s\n",
 656                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 657                     types[p], blkbuf);
 658         }
 659 }
 660
 661 static void
 662 dump_dedup_ratio(const ddt_stat_t *dds)
 663 {
 664         double rL, rP, rD, D, dedup, compress, copies;
 665
 666         if (dds->dds_blocks == 0)
 667                 return;
 668
 669         rL = (double)dds->dds_ref_lsize;
 670         rP = (double)dds->dds_ref_psize;
 671         rD = (double)dds->dds_ref_dsize;
 672         D = (double)dds->dds_dsize;
 673
 674         dedup = rD / D;
 675         compress = rL / rP;
 676         copies = rD / rP;
 677
 678         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 679             "dedup * compress / copies = %.2f\n\n",
 680             dedup, compress, copies, dedup * compress / copies);
 681 }
 682
 683 static void
 684 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 685 {
 686         char name[DDT_NAMELEN];
 687         ddt_entry_t dde;
 688         uint64_t walk = 0;
 689         dmu_object_info_t doi;
 690         uint64_t count, dspace, mspace;
 691         int error;
 692
 693         error = ddt_object_info(ddt, type, class, &doi);
 694
 695         if (error == ENOENT)
 696                 return;
 697         ASSERT(error == 0);
 698
 699         if ((count = ddt_object_count(ddt, type, class)) == 0)
 700                 return;
 701
 702         dspace = doi.doi_physical_blocks_512 << 9;
 703         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 704
 705         ddt_object_name(ddt, type, class, name);
 706
 707         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 708             name,
 709             (u_longlong_t)count,
 710             (u_longlong_t)(dspace / count),
 711             (u_longlong_t)(mspace / count));
 712
 713         if (dump_opt['D'] < 3)
 714                 return;
 715
 716         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 717
 718         if (dump_opt['D'] < 4)
 719                 return;
 720
 721         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 722                 return;
 723
 724         (void) printf("%s contents:\n\n", name);
 725
 726         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 727                 dump_dde(ddt, &dde, walk);
 728
 729         ASSERT(error == ENOENT);
 730
 731         (void) printf("\n");
 732 }
 733
 734 static void
 735 dump_all_ddts(spa_t *spa)
 736 {
 737         ddt_histogram_t ddh_total;
 738         ddt_stat_t dds_total;
 739         enum zio_checksum c;
 740         enum ddt_type type;
 741         enum ddt_class class;
 742
 743         bzero(&ddh_total, sizeof (ddt_histogram_t));
 744         bzero(&dds_total, sizeof (ddt_stat_t));
 745
 746         for (c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 747                 ddt_t *ddt = spa->spa_ddt[c];
 748                 for (type = 0; type < DDT_TYPES; type++) {
 749                         for (class = 0; class < DDT_CLASSES;
 750                             class++) {
 751                                 dump_ddt(ddt, type, class);
 752                         }
 753                 }
 754         }
 755
 756         ddt_get_dedup_stats(spa, &dds_total);
 757
 758         if (dds_total.dds_blocks == 0) {
 759                 (void) printf("All DDTs are empty\n");
 760                 return;
 761         }
 762
 763         (void) printf("\n");
 764
 765         if (dump_opt['D'] > 1) {
 766                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
 767                 ddt_get_dedup_histogram(spa, &ddh_total);
 768                 zpool_dump_ddt(&dds_total, &ddh_total);
 769         }
 770
 771         dump_dedup_ratio(&dds_total);
 772 }
 773
 774 static void
 775 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 776 {
 777         char *prefix = (void *)sm;
 778
 779         (void) printf("%s [%llu,%llu) length %llu\n",
 780             prefix,
 781             (u_longlong_t)start,
 782             (u_longlong_t)(start + size),
 783             (u_longlong_t)(size));
 784 }
 785
 786 static void
 787 dump_dtl(vdev_t *vd, int indent)
 788 {
 789         spa_t *spa = vd->vdev_spa;
 790         boolean_t required;
 791         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 792         char prefix[256];
 793         int c, t;
 794
 795         spa_vdev_state_enter(spa, SCL_NONE);
 796         required = vdev_dtl_required(vd);
 797         (void) spa_vdev_state_exit(spa, NULL, 0);
 798
 799         if (indent == 0)
 800                 (void) printf("\nDirty time logs:\n\n");
 801
 802         (void) printf("\t%*s%s [%s]\n", indent, "",
 803             vd->vdev_path ? vd->vdev_path :
 804             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 805             required ? "DTL-required" : "DTL-expendable");
 806
 807         for (t = 0; t < DTL_TYPES; t++) {
 808                 space_map_t *sm = &vd->vdev_dtl[t];
 809                 if (sm->sm_space == 0)
 810                         continue;
 811                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 812                     indent + 2, "", name[t]);
 813                 mutex_enter(sm->sm_lock);
 814                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 815                 mutex_exit(sm->sm_lock);
 816                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 817                         dump_spacemap(spa->spa_meta_objset,
 818                             &vd->vdev_dtl_smo, sm);
 819         }
 820
 821         for (c = 0; c < vd->vdev_children; c++)
 822                 dump_dtl(vd->vdev_child[c], indent + 4);
 823 }
 824
 825 static void
 826 dump_history(spa_t *spa)
 827 {
 828         nvlist_t **events = NULL;
 829         char buf[SPA_MAXBLOCKSIZE];
 830         uint64_t resid, len, off = 0;
 831         uint_t num = 0;
 832         int error;
 833         time_t tsec;
 834         struct tm t;
 835         char tbuf[30];
 836         char internalstr[MAXPATHLEN];
 837         int i;
 838
 839         do {
 840                 len = sizeof (buf);
 841
 842                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
 843                         (void) fprintf(stderr, "Unable to read history: "
 844                             "error %d\n", error);
 845                         return;
 846                 }
 847
 848                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
 849                         break;
 850
 851                 off -= resid;
 852         } while (len != 0);
 853
 854         (void) printf("\nHistory:\n");
 855         for (i = 0; i < num; i++) {
 856                 uint64_t time, txg, ievent;
 857                 char *cmd, *intstr;
 858
 859                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 860                     &time) != 0)
 861                         continue;
 862                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 863                     &cmd) != 0) {
 864                         if (nvlist_lookup_uint64(events[i],
 865                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
 866                                 continue;
 867                         verify(nvlist_lookup_uint64(events[i],
 868                             ZPOOL_HIST_TXG, &txg) == 0);
 869                         verify(nvlist_lookup_string(events[i],
 870                             ZPOOL_HIST_INT_STR, &intstr) == 0);
 871                         if (ievent >= LOG_END)
 872                                 continue;
 873
 874                         (void) snprintf(internalstr,
 875                             sizeof (internalstr),
 876                             "[internal %s txg:%lld] %s",
 877                             zfs_history_event_names[ievent],
 878                             (longlong_t)txg, intstr);
 879                         cmd = internalstr;
 880                 }
 881                 tsec = time;
 882                 (void) localtime_r(&tsec, &t);
 883                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
 884                 (void) printf("%s %s\n", tbuf, cmd);
 885         }
 886 }
 887
 888 /*ARGSUSED*/
 889 static void
 890 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 891 {
 892 }
 893
 894 static uint64_t
 895 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
 896 {
 897         if (dnp == NULL) {
 898                 ASSERT(zb->zb_level < 0);
 899                 if (zb->zb_object == 0)
 900                         return (zb->zb_blkid);
 901                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
 902         }
 903
 904         ASSERT(zb->zb_level >= 0);
 905
 906         return ((zb->zb_blkid <<
 907             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 908             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 909 }
 910
 911 static void
 912 sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
 913 {
 914         const dva_t *dva = bp->blk_dva;
 915         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
 916         int i;
 917
 918         if (dump_opt['b'] >= 5) {
 919                 sprintf_blkptr(blkbuf, bp);
 920                 return;
 921         }
 922
 923         blkbuf[0] = '\0';
 924
 925         for (i = 0; i < ndvas; i++)
 926                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 927                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 928                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 929                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 930
 931         (void) sprintf(blkbuf + strlen(blkbuf),
 932             "%llxL/%llxP F=%llu B=%llu/%llu",
 933             (u_longlong_t)BP_GET_LSIZE(bp),
 934             (u_longlong_t)BP_GET_PSIZE(bp),
 935             (u_longlong_t)bp->blk_fill,
 936             (u_longlong_t)bp->blk_birth,
 937             (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
 938 }
 939
 940 static void
 941 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 942     const dnode_phys_t *dnp)
 943 {
 944         char blkbuf[BP_SPRINTF_LEN];
 945         int l;
 946
 947         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 948         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 949
 950         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
 951
 952         ASSERT(zb->zb_level >= 0);
 953
 954         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 955                 if (l == zb->zb_level) {
 956                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 957                 } else {
 958                         (void) printf(" ");
 959                 }
 960         }
 961
 962         sprintf_blkptr_compact(blkbuf, bp);
 963         (void) printf("%s\n", blkbuf);
 964 }
 965
 966 static int
 967 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 968     blkptr_t *bp, const zbookmark_t *zb)
 969 {
 970         int err = 0;
 971
 972         if (bp->blk_birth == 0)
 973                 return (0);
 974
 975         print_indirect(bp, zb, dnp);
 976
 977         if (BP_GET_LEVEL(bp) > 0) {
 978                 uint32_t flags = ARC_WAIT;
 979                 int i;
 980                 blkptr_t *cbp;
 981                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
 982                 arc_buf_t *buf;
 983                 uint64_t fill = 0;
 984
 985                 err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
 986                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
 987                 if (err)
 988                         return (err);
 989                 ASSERT(buf->b_data);
 990
 991                 /* recursively visit blocks below this */
 992                 cbp = buf->b_data;
 993                 for (i = 0; i < epb; i++, cbp++) {
 994                         zbookmark_t czb;
 995
 996                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
 997                             zb->zb_level - 1,
 998                             zb->zb_blkid * epb + i);
 999                         err = visit_indirect(spa, dnp, cbp, &czb);
1000                         if (err)
1001                                 break;
1002                         fill += cbp->blk_fill;
1003                 }
1004                 if (!err)
1005                         ASSERT3U(fill, ==, bp->blk_fill);
1006                 (void) arc_buf_remove_ref(buf, &buf);
1007         }
1008
1009         return (err);
1010 }
1011
1012 /*ARGSUSED*/
1013 static void
1014 dump_indirect(dnode_t *dn)
1015 {
1016         dnode_phys_t *dnp = dn->dn_phys;
1017         int j;
1018         zbookmark_t czb;
1019
1020         (void) printf("Indirect blocks:\n");
1021
1022         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1023             dn->dn_object, dnp->dn_nlevels - 1, 0);
1024         for (j = 0; j < dnp->dn_nblkptr; j++) {
1025                 czb.zb_blkid = j;
1026                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1027                     &dnp->dn_blkptr[j], &czb);
1028         }
1029
1030         (void) printf("\n");
1031 }
1032
1033 /*ARGSUSED*/
1034 static void
1035 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1036 {
1037         dsl_dir_phys_t *dd = data;
1038         time_t crtime;
1039         char nice[32];
1040
1041         if (dd == NULL)
1042                 return;
1043
1044         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1045
1046         crtime = dd->dd_creation_time;
1047         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1048         (void) printf("\t\thead_dataset_obj = %llu\n",
1049             (u_longlong_t)dd->dd_head_dataset_obj);
1050         (void) printf("\t\tparent_dir_obj = %llu\n",
1051             (u_longlong_t)dd->dd_parent_obj);
1052         (void) printf("\t\torigin_obj = %llu\n",
1053             (u_longlong_t)dd->dd_origin_obj);
1054         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1055             (u_longlong_t)dd->dd_child_dir_zapobj);
1056         zdb_nicenum(dd->dd_used_bytes, nice);
1057         (void) printf("\t\tused_bytes = %s\n", nice);
1058         zdb_nicenum(dd->dd_compressed_bytes, nice);
1059         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1060         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1061         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1062         zdb_nicenum(dd->dd_quota, nice);
1063         (void) printf("\t\tquota = %s\n", nice);
1064         zdb_nicenum(dd->dd_reserved, nice);
1065         (void) printf("\t\treserved = %s\n", nice);
1066         (void) printf("\t\tprops_zapobj = %llu\n",
1067             (u_longlong_t)dd->dd_props_zapobj);
1068         (void) printf("\t\tdeleg_zapobj = %llu\n",
1069             (u_longlong_t)dd->dd_deleg_zapobj);
1070         (void) printf("\t\tflags = %llx\n",
1071             (u_longlong_t)dd->dd_flags);
1072
1073 #define DO(which) \
1074         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1075         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1076         DO(HEAD);
1077         DO(SNAP);
1078         DO(CHILD);
1079         DO(CHILD_RSRV);
1080         DO(REFRSRV);
1081 #undef DO
1082 }
1083
1084 /*ARGSUSED*/
1085 static void
1086 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1087 {
1088         dsl_dataset_phys_t *ds = data;
1089         time_t crtime;
1090         char used[32], compressed[32], uncompressed[32], unique[32];
1091         char blkbuf[BP_SPRINTF_LEN];
1092
1093         if (ds == NULL)
1094                 return;
1095
1096         ASSERT(size == sizeof (*ds));
1097         crtime = ds->ds_creation_time;
1098         zdb_nicenum(ds->ds_used_bytes, used);
1099         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1100         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1101         zdb_nicenum(ds->ds_unique_bytes, unique);
1102         sprintf_blkptr(blkbuf, &ds->ds_bp);
1103
1104         (void) printf("\t\tdir_obj = %llu\n",
1105             (u_longlong_t)ds->ds_dir_obj);
1106         (void) printf("\t\tprev_snap_obj = %llu\n",
1107             (u_longlong_t)ds->ds_prev_snap_obj);
1108         (void) printf("\t\tprev_snap_txg = %llu\n",
1109             (u_longlong_t)ds->ds_prev_snap_txg);
1110         (void) printf("\t\tnext_snap_obj = %llu\n",
1111             (u_longlong_t)ds->ds_next_snap_obj);
1112         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1113             (u_longlong_t)ds->ds_snapnames_zapobj);
1114         (void) printf("\t\tnum_children = %llu\n",
1115             (u_longlong_t)ds->ds_num_children);
1116         (void) printf("\t\tuserrefs_obj = %llu\n",
1117             (u_longlong_t)ds->ds_userrefs_obj);
1118         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1119         (void) printf("\t\tcreation_txg = %llu\n",
1120             (u_longlong_t)ds->ds_creation_txg);
1121         (void) printf("\t\tdeadlist_obj = %llu\n",
1122             (u_longlong_t)ds->ds_deadlist_obj);
1123         (void) printf("\t\tused_bytes = %s\n", used);
1124         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1125         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1126         (void) printf("\t\tunique = %s\n", unique);
1127         (void) printf("\t\tfsid_guid = %llu\n",
1128             (u_longlong_t)ds->ds_fsid_guid);
1129         (void) printf("\t\tguid = %llu\n",
1130             (u_longlong_t)ds->ds_guid);
1131         (void) printf("\t\tflags = %llx\n",
1132             (u_longlong_t)ds->ds_flags);
1133         (void) printf("\t\tnext_clones_obj = %llu\n",
1134             (u_longlong_t)ds->ds_next_clones_obj);
1135         (void) printf("\t\tprops_obj = %llu\n",
1136             (u_longlong_t)ds->ds_props_obj);
1137         (void) printf("\t\tbp = %s\n", blkbuf);
1138 }
1139
1140 /* ARGSUSED */
1141 static int
1142 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1143 {
1144         char blkbuf[BP_SPRINTF_LEN];
1145
1146         ASSERT(bp->blk_birth != 0);
1147         sprintf_blkptr_compact(blkbuf, bp);
1148         (void) printf("\t%s\n", blkbuf);
1149         return (0);
1150 }
1151
1152 static void
1153 dump_bpobj(bpobj_t *bpo, char *name)
1154 {
1155         char bytes[32];
1156         char comp[32];
1157         char uncomp[32];
1158
1159         if (dump_opt['d'] < 3)
1160                 return;
1161
1162         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1163         if (bpo->bpo_havesubobj) {
1164                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1165                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1166                 (void) printf("\n    %s: %llu local blkptrs, %llu subobjs, "
1167                     "%s (%s/%s comp)\n",
1168                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1169                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1170                     bytes, comp, uncomp);
1171         } else {
1172                 (void) printf("\n    %s: %llu blkptrs, %s\n",
1173                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, bytes);
1174         }
1175
1176         if (dump_opt['d'] < 5)
1177                 return;
1178
1179         (void) printf("\n");
1180
1181         (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1182 }
1183
1184 static void
1185 dump_deadlist(dsl_deadlist_t *dl)
1186 {
1187         dsl_deadlist_entry_t *dle;
1188         char bytes[32];
1189         char comp[32];
1190         char uncomp[32];
1191
1192         if (dump_opt['d'] < 3)
1193                 return;
1194
1195         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1196         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1197         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1198         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1199             bytes, comp, uncomp);
1200
1201         if (dump_opt['d'] < 4)
1202                 return;
1203
1204         (void) printf("\n");
1205
1206         for (dle = avl_first(&dl->dl_tree); dle;
1207             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1208                 (void) printf("      mintxg %llu -> obj %llu\n",
1209                     (longlong_t)dle->dle_mintxg,
1210                     (longlong_t)dle->dle_bpobj.bpo_object);
1211
1212                 if (dump_opt['d'] >= 5)
1213                         dump_bpobj(&dle->dle_bpobj, "");
1214         }
1215 }
1216
1217 static avl_tree_t idx_tree;
1218 static avl_tree_t domain_tree;
1219 static boolean_t fuid_table_loaded;
1220 static boolean_t sa_loaded;
1221 sa_attr_type_t *sa_attr_table;
1222
1223 static void
1224 fuid_table_destroy(void)
1225 {
1226         if (fuid_table_loaded) {
1227                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1228                 fuid_table_loaded = B_FALSE;
1229         }
1230 }
1231
1232 /*
1233  * print uid or gid information.
1234  * For normal POSIX id just the id is printed in decimal format.
1235  * For CIFS files with FUID the fuid is printed in hex followed by
1236  * the doman-rid string.
1237  */
1238 static void
1239 print_idstr(uint64_t id, const char *id_type)
1240 {
1241         if (FUID_INDEX(id)) {
1242                 char *domain;
1243
1244                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1245                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1246                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1247         } else {
1248                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1249         }
1250
1251 }
1252
1253 static void
1254 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1255 {
1256         uint32_t uid_idx, gid_idx;
1257
1258         uid_idx = FUID_INDEX(uid);
1259         gid_idx = FUID_INDEX(gid);
1260
1261         /* Load domain table, if not already loaded */
1262         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1263                 uint64_t fuid_obj;
1264
1265                 /* first find the fuid object.  It lives in the master node */
1266                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1267                     8, 1, &fuid_obj) == 0);
1268                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1269                 (void) zfs_fuid_table_load(os, fuid_obj,
1270                     &idx_tree, &domain_tree);
1271                 fuid_table_loaded = B_TRUE;
1272         }
1273
1274         print_idstr(uid, "uid");
1275         print_idstr(gid, "gid");
1276 }
1277
1278 /*ARGSUSED*/
1279 static void
1280 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1281 {
1282         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1283         sa_handle_t *hdl;
1284         uint64_t xattr, rdev, gen;
1285         uint64_t uid, gid, mode, fsize, parent, links;
1286         uint64_t pflags;
1287         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1288         time_t z_crtime, z_atime, z_mtime, z_ctime;
1289         sa_bulk_attr_t bulk[12];
1290         int idx = 0;
1291         int error;
1292
1293         if (!sa_loaded) {
1294                 uint64_t sa_attrs = 0;
1295                 uint64_t version;
1296
1297                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1298                     8, 1, &version) == 0);
1299                 if (version >= ZPL_VERSION_SA) {
1300                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1301                             8, 1, &sa_attrs) == 0);
1302                 }
1303                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1304                     ZPL_END, &sa_attr_table)) != 0) {
1305                         (void) printf("sa_setup failed errno %d, can't "
1306                             "display znode contents\n", error);
1307                         return;
1308                 }
1309                 sa_loaded = B_TRUE;
1310         }
1311
1312         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1313                 (void) printf("Failed to get handle for SA znode\n");
1314                 return;
1315         }
1316
1317         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1318         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1319         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1320             &links, 8);
1321         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1322         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1323             &mode, 8);
1324         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1325             NULL, &parent, 8);
1326         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1327             &fsize, 8);
1328         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1329             acctm, 16);
1330         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1331             modtm, 16);
1332         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1333             crtm, 16);
1334         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1335             chgtm, 16);
1336         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1337             &pflags, 8);
1338
1339         if (sa_bulk_lookup(hdl, bulk, idx)) {
1340                 (void) sa_handle_destroy(hdl);
1341                 return;
1342         }
1343
1344         error = zfs_obj_to_path(os, object, path, sizeof (path));
1345         if (error != 0) {
1346                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1347                     (u_longlong_t)object);
1348         }
1349         if (dump_opt['d'] < 3) {
1350                 (void) printf("\t%s\n", path);
1351                 (void) sa_handle_destroy(hdl);
1352                 return;
1353         }
1354
1355         z_crtime = (time_t)crtm[0];
1356         z_atime = (time_t)acctm[0];
1357         z_mtime = (time_t)modtm[0];
1358         z_ctime = (time_t)chgtm[0];
1359
1360         (void) printf("\tpath   %s\n", path);
1361         dump_uidgid(os, uid, gid);
1362         (void) printf("\tatime  %s", ctime(&z_atime));
1363         (void) printf("\tmtime  %s", ctime(&z_mtime));
1364         (void) printf("\tctime  %s", ctime(&z_ctime));
1365         (void) printf("\tcrtime %s", ctime(&z_crtime));
1366         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1367         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1368         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1369         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1370         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1371         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1372         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1373             sizeof (uint64_t)) == 0)
1374                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1375         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1376             sizeof (uint64_t)) == 0)
1377                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1378         sa_handle_destroy(hdl);
1379 }
1380
1381 /*ARGSUSED*/
1382 static void
1383 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1384 {
1385 }
1386
1387 /*ARGSUSED*/
1388 static void
1389 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1390 {
1391 }
1392
1393 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1394         dump_none,              /* unallocated                  */
1395         dump_zap,               /* object directory             */
1396         dump_uint64,            /* object array                 */
1397         dump_none,              /* packed nvlist                */
1398         dump_packed_nvlist,     /* packed nvlist size           */
1399         dump_none,              /* bplist                       */
1400         dump_none,              /* bplist header                */
1401         dump_none,              /* SPA space map header         */
1402         dump_none,              /* SPA space map                */
1403         dump_none,              /* ZIL intent log               */
1404         dump_dnode,             /* DMU dnode                    */
1405         dump_dmu_objset,        /* DMU objset                   */
1406         dump_dsl_dir,           /* DSL directory                */
1407         dump_zap,               /* DSL directory child map      */
1408         dump_zap,               /* DSL dataset snap map         */
1409         dump_zap,               /* DSL props                    */
1410         dump_dsl_dataset,       /* DSL dataset                  */
1411         dump_znode,             /* ZFS znode                    */
1412         dump_acl,               /* ZFS V0 ACL                   */
1413         dump_uint8,             /* ZFS plain file               */
1414         dump_zpldir,            /* ZFS directory                */
1415         dump_zap,               /* ZFS master node              */
1416         dump_zap,               /* ZFS delete queue             */
1417         dump_uint8,             /* zvol object                  */
1418         dump_zap,               /* zvol prop                    */
1419         dump_uint8,             /* other uint8[]                */
1420         dump_uint64,            /* other uint64[]               */
1421         dump_zap,               /* other ZAP                    */
1422         dump_zap,               /* persistent error log         */
1423         dump_uint8,             /* SPA history                  */
1424         dump_uint64,            /* SPA history offsets          */
1425         dump_zap,               /* Pool properties              */
1426         dump_zap,               /* DSL permissions              */
1427         dump_acl,               /* ZFS ACL                      */
1428         dump_uint8,             /* ZFS SYSACL                   */
1429         dump_none,              /* FUID nvlist                  */
1430         dump_packed_nvlist,     /* FUID nvlist size             */
1431         dump_zap,               /* DSL dataset next clones      */
1432         dump_zap,               /* DSL scrub queue              */
1433         dump_zap,               /* ZFS user/group used          */
1434         dump_zap,               /* ZFS user/group quota         */
1435         dump_zap,               /* snapshot refcount tags       */
1436         dump_ddt_zap,           /* DDT ZAP object               */
1437         dump_zap,               /* DDT statistics               */
1438         dump_znode,             /* SA object                    */
1439         dump_zap,               /* SA Master Node               */
1440         dump_sa_attrs,          /* SA attribute registration    */
1441         dump_sa_layouts,        /* SA attribute layouts         */
1442         dump_zap,               /* DSL scrub translations       */
1443         dump_none,              /* fake dedup BP                */
1444         dump_zap,               /* deadlist                     */
1445         dump_none,              /* deadlist hdr                 */
1446         dump_zap,               /* dsl clones                   */
1447         dump_none,              /* bpobj subobjs                */
1448         dump_unknown,           /* Unknown type, must be last   */
1449 };
1450
1451 static void
1452 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1453 {
1454         dmu_buf_t *db = NULL;
1455         dmu_object_info_t doi;
1456         dnode_t *dn;
1457         void *bonus = NULL;
1458         size_t bsize = 0;
1459         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1460         char bonus_size[32];
1461         char aux[50];
1462         int error;
1463
1464         if (*print_header) {
1465                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1466                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1467                     "%full", "type");
1468                 *print_header = 0;
1469         }
1470
1471         if (object == 0) {
1472                 dn = DMU_META_DNODE(os);
1473         } else {
1474                 error = dmu_bonus_hold(os, object, FTAG, &db);
1475                 if (error)
1476                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1477                             object, error);
1478                 bonus = db->db_data;
1479                 bsize = db->db_size;
1480                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1481         }
1482         dmu_object_info_from_dnode(dn, &doi);
1483
1484         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1485         zdb_nicenum(doi.doi_data_block_size, dblk);
1486         zdb_nicenum(doi.doi_max_offset, lsize);
1487         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1488         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1489         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1490             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1491             doi.doi_max_offset);
1492
1493         aux[0] = '\0';
1494
1495         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1496                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1497                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1498         }
1499
1500         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1501                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1502                     ZDB_COMPRESS_NAME(doi.doi_compress));
1503         }
1504
1505         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1506             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1507             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1508
1509         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1510                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1511                     "", "", "", "", "", bonus_size, "bonus",
1512                     ZDB_OT_NAME(doi.doi_bonus_type));
1513         }
1514
1515         if (verbosity >= 4) {
1516                 (void) printf("\tdnode flags: %s%s%s\n",
1517                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1518                     "USED_BYTES " : "",
1519                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1520                     "USERUSED_ACCOUNTED " : "",
1521                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1522                     "SPILL_BLKPTR" : "");
1523                 (void) printf("\tdnode maxblkid: %llu\n",
1524                     (longlong_t)dn->dn_phys->dn_maxblkid);
1525
1526                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1527                     bonus, bsize);
1528                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1529                 *print_header = 1;
1530         }
1531
1532         if (verbosity >= 5)
1533                 dump_indirect(dn);
1534
1535         if (verbosity >= 5) {
1536                 /*
1537                  * Report the list of segments that comprise the object.
1538                  */
1539                 uint64_t start = 0;
1540                 uint64_t end;
1541                 uint64_t blkfill = 1;
1542                 int minlvl = 1;
1543
1544                 if (dn->dn_type == DMU_OT_DNODE) {
1545                         minlvl = 0;
1546                         blkfill = DNODES_PER_BLOCK;
1547                 }
1548
1549                 for (;;) {
1550                         char segsize[32];
1551                         error = dnode_next_offset(dn,
1552                             0, &start, minlvl, blkfill, 0);
1553                         if (error)
1554                                 break;
1555                         end = start;
1556                         error = dnode_next_offset(dn,
1557                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1558                         zdb_nicenum(end - start, segsize);
1559                         (void) printf("\t\tsegment [%016llx, %016llx)"
1560                             " size %5s\n", (u_longlong_t)start,
1561                             (u_longlong_t)end, segsize);
1562                         if (error)
1563                                 break;
1564                         start = end;
1565                 }
1566         }
1567
1568         if (db != NULL)
1569                 dmu_buf_rele(db, FTAG);
1570 }
1571
1572 static char *objset_types[DMU_OST_NUMTYPES] = {
1573         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1574
1575 static void
1576 dump_dir(objset_t *os)
1577 {
1578         dmu_objset_stats_t dds;
1579         uint64_t object, object_count;
1580         uint64_t refdbytes, usedobjs, scratch;
1581         char numbuf[32];
1582         char blkbuf[BP_SPRINTF_LEN + 20];
1583         char osname[MAXNAMELEN];
1584         char *type = "UNKNOWN";
1585         int verbosity = dump_opt['d'];
1586         int print_header = 1;
1587         int i, error;
1588
1589         dmu_objset_fast_stat(os, &dds);
1590
1591         if (dds.dds_type < DMU_OST_NUMTYPES)
1592                 type = objset_types[dds.dds_type];
1593
1594         if (dds.dds_type == DMU_OST_META) {
1595                 dds.dds_creation_txg = TXG_INITIAL;
1596                 usedobjs = os->os_rootbp->blk_fill;
1597                 refdbytes = os->os_spa->spa_dsl_pool->
1598                     dp_mos_dir->dd_phys->dd_used_bytes;
1599         } else {
1600                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1601         }
1602
1603         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1604
1605         zdb_nicenum(refdbytes, numbuf);
1606
1607         if (verbosity >= 4) {
1608                 (void) sprintf(blkbuf, ", rootbp ");
1609                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1610         } else {
1611                 blkbuf[0] = '\0';
1612         }
1613
1614         dmu_objset_name(os, osname);
1615
1616         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1617             "%s, %llu objects%s\n",
1618             osname, type, (u_longlong_t)dmu_objset_id(os),
1619             (u_longlong_t)dds.dds_creation_txg,
1620             numbuf, (u_longlong_t)usedobjs, blkbuf);
1621
1622         if (zopt_objects != 0) {
1623                 for (i = 0; i < zopt_objects; i++)
1624                         dump_object(os, zopt_object[i], verbosity,
1625                             &print_header);
1626                 (void) printf("\n");
1627                 return;
1628         }
1629
1630         if (dump_opt['i'] != 0 || verbosity >= 2)
1631                 dump_intent_log(dmu_objset_zil(os));
1632
1633         if (dmu_objset_ds(os) != NULL)
1634                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1635
1636         if (verbosity < 2)
1637                 return;
1638
1639         if (os->os_rootbp->blk_birth == 0)
1640                 return;
1641
1642         dump_object(os, 0, verbosity, &print_header);
1643         object_count = 0;
1644         if (DMU_USERUSED_DNODE(os) != NULL &&
1645             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1646                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1647                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1648         }
1649
1650         object = 0;
1651         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1652                 dump_object(os, object, verbosity, &print_header);
1653                 object_count++;
1654         }
1655
1656         ASSERT3U(object_count, ==, usedobjs);
1657
1658         (void) printf("\n");
1659
1660         if (error != ESRCH) {
1661                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1662                 abort();
1663         }
1664 }
1665
1666 static void
1667 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1668 {
1669         time_t timestamp = ub->ub_timestamp;
1670
1671         (void) printf("%s", header ? header : "");
1672         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1673         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1674         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1675         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1676         (void) printf("\ttimestamp = %llu UTC = %s",
1677             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1678         if (dump_opt['u'] >= 3) {
1679                 char blkbuf[BP_SPRINTF_LEN];
1680                 sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1681                 (void) printf("\trootbp = %s\n", blkbuf);
1682         }
1683         (void) printf("%s", footer ? footer : "");
1684 }
1685
1686 static void
1687 dump_config(spa_t *spa)
1688 {
1689         dmu_buf_t *db;
1690         size_t nvsize = 0;
1691         int error = 0;
1692
1693
1694         error = dmu_bonus_hold(spa->spa_meta_objset,
1695             spa->spa_config_object, FTAG, &db);
1696
1697         if (error == 0) {
1698                 nvsize = *(uint64_t *)db->db_data;
1699                 dmu_buf_rele(db, FTAG);
1700
1701                 (void) printf("\nMOS Configuration:\n");
1702                 dump_packed_nvlist(spa->spa_meta_objset,
1703                     spa->spa_config_object, (void *)&nvsize, 1);
1704         } else {
1705                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1706                     (u_longlong_t)spa->spa_config_object, error);
1707         }
1708 }
1709
1710 static void
1711 dump_cachefile(const char *cachefile)
1712 {
1713         int fd;
1714         struct stat64 statbuf;
1715         char *buf;
1716         nvlist_t *config;
1717
1718         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1719                 (void) printf("cannot open '%s': %s\n", cachefile,
1720                     strerror(errno));
1721                 exit(1);
1722         }
1723
1724         if (fstat64(fd, &statbuf) != 0) {
1725                 (void) printf("failed to stat '%s': %s\n", cachefile,
1726                     strerror(errno));
1727                 exit(1);
1728         }
1729
1730         if ((buf = malloc(statbuf.st_size)) == NULL) {
1731                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1732                     (u_longlong_t)statbuf.st_size);
1733                 exit(1);
1734         }
1735
1736         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1737                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1738                     (u_longlong_t)statbuf.st_size);
1739                 exit(1);
1740         }
1741
1742         (void) close(fd);
1743
1744         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1745                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1746                 exit(1);
1747         }
1748
1749         free(buf);
1750
1751         dump_nvlist(config, 0);
1752
1753         nvlist_free(config);
1754 }
1755
1756 #define ZDB_MAX_UB_HEADER_SIZE 32
1757
1758 static void
1759 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1760 {
1761         vdev_t vd;
1762         vdev_t *vdp = &vd;
1763         char header[ZDB_MAX_UB_HEADER_SIZE];
1764         int i;
1765
1766         vd.vdev_ashift = ashift;
1767         vdp->vdev_top = vdp;
1768
1769         for (i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1770                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1771                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1772
1773                 if (uberblock_verify(ub))
1774                         continue;
1775                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1776                     "Uberblock[%d]\n", i);
1777                 dump_uberblock(ub, header, "");
1778         }
1779 }
1780
1781 static void
1782 dump_label(const char *dev)
1783 {
1784         int fd;
1785         vdev_label_t label;
1786         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1787         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1788         struct stat64 statbuf;
1789         uint64_t psize, ashift;
1790         int len = strlen(dev) + 1;
1791         int l;
1792
1793         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1794                 len++;
1795                 path = malloc(len);
1796                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1797         } else {
1798                 path = strdup(dev);
1799         }
1800
1801         if ((fd = open64(path, O_RDONLY)) < 0) {
1802                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
1803                 free(path);
1804                 exit(1);
1805         }
1806
1807         if (fstat64(fd, &statbuf) != 0) {
1808                 (void) printf("failed to stat '%s': %s\n", path,
1809                     strerror(errno));
1810                 free(path);
1811                 (void) close(fd);
1812                 exit(1);
1813         }
1814
1815         if (S_ISBLK(statbuf.st_mode)) {
1816                 (void) printf("cannot use '%s': character device required\n",
1817                     path);
1818                 free(path);
1819                 (void) close(fd);
1820                 exit(1);
1821         }
1822
1823         psize = statbuf.st_size;
1824         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1825
1826         for (l = 0; l < VDEV_LABELS; l++) {
1827                 nvlist_t *config = NULL;
1828
1829                 (void) printf("--------------------------------------------\n");
1830                 (void) printf("LABEL %d\n", l);
1831                 (void) printf("--------------------------------------------\n");
1832
1833                 if (pread64(fd, &label, sizeof (label),
1834                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1835                         (void) printf("failed to read label %d\n", l);
1836                         continue;
1837                 }
1838
1839                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1840                         (void) printf("failed to unpack label %d\n", l);
1841                         ashift = SPA_MINBLOCKSHIFT;
1842                 } else {
1843                         nvlist_t *vdev_tree = NULL;
1844
1845                         dump_nvlist(config, 4);
1846                         if ((nvlist_lookup_nvlist(config,
1847                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1848                             (nvlist_lookup_uint64(vdev_tree,
1849                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1850                                 ashift = SPA_MINBLOCKSHIFT;
1851                         nvlist_free(config);
1852                 }
1853                 if (dump_opt['u'])
1854                         dump_label_uberblocks(&label, ashift);
1855         }
1856
1857         free(path);
1858         (void) close(fd);
1859 }
1860
1861 /*ARGSUSED*/
1862 static int
1863 dump_one_dir(const char *dsname, void *arg)
1864 {
1865         int error;
1866         objset_t *os;
1867
1868         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1869         if (error) {
1870                 (void) printf("Could not open %s, error %d\n", dsname, error);
1871                 return (0);
1872         }
1873         dump_dir(os);
1874         dmu_objset_disown(os, FTAG);
1875         fuid_table_destroy();
1876         sa_loaded = B_FALSE;
1877         return (0);
1878 }
1879
1880 /*
1881  * Block statistics.
1882  */
1883 typedef struct zdb_blkstats {
1884         uint64_t        zb_asize;
1885         uint64_t        zb_lsize;
1886         uint64_t        zb_psize;
1887         uint64_t        zb_count;
1888 } zdb_blkstats_t;
1889
1890 /*
1891  * Extended object types to report deferred frees and dedup auto-ditto blocks.
1892  */
1893 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
1894 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
1895 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 2)
1896
1897 static char *zdb_ot_extname[] = {
1898         "deferred free",
1899         "dedup ditto",
1900         "Total",
1901 };
1902
1903 #define ZB_TOTAL        DN_MAX_LEVELS
1904
1905 typedef struct zdb_cb {
1906         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1907         uint64_t        zcb_dedup_asize;
1908         uint64_t        zcb_dedup_blocks;
1909         uint64_t        zcb_errors[256];
1910         int             zcb_readfails;
1911         int             zcb_haderrors;
1912         spa_t           *zcb_spa;
1913 } zdb_cb_t;
1914
1915 static void
1916 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
1917     dmu_object_type_t type)
1918 {
1919         uint64_t refcnt = 0;
1920         int i;
1921
1922         ASSERT(type < ZDB_OT_TOTAL);
1923
1924         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1925                 return;
1926
1927         for (i = 0; i < 4; i++) {
1928                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1929                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
1930                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1931
1932                 zb->zb_asize += BP_GET_ASIZE(bp);
1933                 zb->zb_lsize += BP_GET_LSIZE(bp);
1934                 zb->zb_psize += BP_GET_PSIZE(bp);
1935                 zb->zb_count++;
1936         }
1937
1938         if (dump_opt['L'])
1939                 return;
1940
1941         if (BP_GET_DEDUP(bp)) {
1942                 ddt_t *ddt;
1943                 ddt_entry_t *dde;
1944
1945                 ddt = ddt_select(zcb->zcb_spa, bp);
1946                 ddt_enter(ddt);
1947                 dde = ddt_lookup(ddt, bp, B_FALSE);
1948
1949                 if (dde == NULL) {
1950                         refcnt = 0;
1951                 } else {
1952                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
1953                         ddt_phys_decref(ddp);
1954                         refcnt = ddp->ddp_refcnt;
1955                         if (ddt_phys_total_refcnt(dde) == 0)
1956                                 ddt_remove(ddt, dde);
1957                 }
1958                 ddt_exit(ddt);
1959         }
1960
1961         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
1962             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
1963             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
1964 }
1965
1966 /* ARGSUSED */
1967 static int
1968 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
1969     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
1970 {
1971         zdb_cb_t *zcb = arg;
1972         char blkbuf[BP_SPRINTF_LEN];
1973         dmu_object_type_t type;
1974         boolean_t is_metadata;
1975
1976         if (bp == NULL)
1977                 return (0);
1978
1979         type = BP_GET_TYPE(bp);
1980
1981         zdb_count_block(zcb, zilog, bp, type);
1982
1983         is_metadata = (BP_GET_LEVEL(bp) != 0 || dmu_ot[type].ot_metadata);
1984
1985         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
1986                 int ioerr;
1987                 size_t size = BP_GET_PSIZE(bp);
1988                 void *data = malloc(size);
1989                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
1990
1991                 /* If it's an intent log block, failure is expected. */
1992                 if (zb->zb_level == ZB_ZIL_LEVEL)
1993                         flags |= ZIO_FLAG_SPECULATIVE;
1994
1995                 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1996                     NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb));
1997
1998                 free(data);
1999
2000                 if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) {
2001                         zcb->zcb_haderrors = 1;
2002                         zcb->zcb_errors[ioerr]++;
2003
2004                         if (dump_opt['b'] >= 2)
2005                                 sprintf_blkptr(blkbuf, bp);
2006                         else
2007                                 blkbuf[0] = '\0';
2008
2009                         (void) printf("zdb_blkptr_cb: "
2010                             "Got error %d reading "
2011                             "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2012                             ioerr,
2013                             (u_longlong_t)zb->zb_objset,
2014                             (u_longlong_t)zb->zb_object,
2015                             (u_longlong_t)zb->zb_level,
2016                             (u_longlong_t)zb->zb_blkid,
2017                             blkbuf);
2018                 }
2019         }
2020
2021         zcb->zcb_readfails = 0;
2022
2023         if (dump_opt['b'] >= 4) {
2024                 sprintf_blkptr(blkbuf, bp);
2025                 (void) printf("objset %llu object %llu "
2026                     "level %lld offset 0x%llx %s\n",
2027                     (u_longlong_t)zb->zb_objset,
2028                     (u_longlong_t)zb->zb_object,
2029                     (longlong_t)zb->zb_level,
2030                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2031                     blkbuf);
2032         }
2033
2034         return (0);
2035 }
2036
2037 static void
2038 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2039 {
2040         vdev_t *vd = sm->sm_ppd;
2041
2042         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2043             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2044 }
2045
2046 /* ARGSUSED */
2047 static void
2048 zdb_space_map_load(space_map_t *sm)
2049 {
2050 }
2051
2052 static void
2053 zdb_space_map_unload(space_map_t *sm)
2054 {
2055         space_map_vacate(sm, zdb_leak, sm);
2056 }
2057
2058 /* ARGSUSED */
2059 static void
2060 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2061 {
2062 }
2063
2064 static space_map_ops_t zdb_space_map_ops = {
2065         zdb_space_map_load,
2066         zdb_space_map_unload,
2067         NULL,   /* alloc */
2068         zdb_space_map_claim,
2069         NULL,   /* free */
2070         NULL    /* maxsize */
2071 };
2072
2073 static void
2074 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2075 {
2076         ddt_bookmark_t ddb = { 0 };
2077         ddt_entry_t dde;
2078         int error;
2079         int p;
2080
2081         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2082                 blkptr_t blk;
2083                 ddt_phys_t *ddp = dde.dde_phys;
2084
2085                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2086                         return;
2087
2088                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2089
2090                 for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2091                         if (ddp->ddp_phys_birth == 0)
2092                                 continue;
2093                         ddt_bp_create(ddb.ddb_checksum,
2094                             &dde.dde_key, ddp, &blk);
2095                         if (p == DDT_PHYS_DITTO) {
2096                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2097                         } else {
2098                                 zcb->zcb_dedup_asize +=
2099                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2100                                 zcb->zcb_dedup_blocks++;
2101                         }
2102                 }
2103                 if (!dump_opt['L']) {
2104                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2105                         ddt_enter(ddt);
2106                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2107                         ddt_exit(ddt);
2108                 }
2109         }
2110
2111         ASSERT(error == ENOENT);
2112 }
2113
2114 static void
2115 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2116 {
2117         zcb->zcb_spa = spa;
2118         int c, m;
2119
2120         if (!dump_opt['L']) {
2121                 vdev_t *rvd = spa->spa_root_vdev;
2122                 for (c = 0; c < rvd->vdev_children; c++) {
2123                         vdev_t *vd = rvd->vdev_child[c];
2124                         for (m = 0; m < vd->vdev_ms_count; m++) {
2125                                 metaslab_t *msp = vd->vdev_ms[m];
2126                                 mutex_enter(&msp->ms_lock);
2127                                 space_map_unload(&msp->ms_map);
2128                                 VERIFY(space_map_load(&msp->ms_map,
2129                                     &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2130                                     spa->spa_meta_objset) == 0);
2131                                 msp->ms_map.sm_ppd = vd;
2132                                 mutex_exit(&msp->ms_lock);
2133                         }
2134                 }
2135         }
2136
2137         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2138
2139         zdb_ddt_leak_init(spa, zcb);
2140
2141         spa_config_exit(spa, SCL_CONFIG, FTAG);
2142 }
2143
2144 static void
2145 zdb_leak_fini(spa_t *spa)
2146 {
2147         int c, m;
2148
2149         if (!dump_opt['L']) {
2150                 vdev_t *rvd = spa->spa_root_vdev;
2151                 for (c = 0; c < rvd->vdev_children; c++) {
2152                         vdev_t *vd = rvd->vdev_child[c];
2153                         for (m = 0; m < vd->vdev_ms_count; m++) {
2154                                 metaslab_t *msp = vd->vdev_ms[m];
2155                                 mutex_enter(&msp->ms_lock);
2156                                 space_map_unload(&msp->ms_map);
2157                                 mutex_exit(&msp->ms_lock);
2158                         }
2159                 }
2160         }
2161 }
2162
2163 /* ARGSUSED */
2164 static int
2165 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2166 {
2167         zdb_cb_t *zcb = arg;
2168
2169         if (dump_opt['b'] >= 4) {
2170                 char blkbuf[BP_SPRINTF_LEN];
2171                 sprintf_blkptr(blkbuf, bp);
2172                 (void) printf("[%s] %s\n",
2173                     "deferred free", blkbuf);
2174         }
2175         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2176         return (0);
2177 }
2178
2179 static int
2180 dump_block_stats(spa_t *spa)
2181 {
2182         zdb_cb_t zcb = { 0 };
2183         zdb_blkstats_t *zb, *tzb;
2184         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2185         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2186         int leaks = 0;
2187         int e;
2188
2189         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
2190             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2191             (dump_opt['c'] == 1) ? "metadata " : "",
2192             dump_opt['c'] ? "checksums " : "",
2193             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2194             !dump_opt['L'] ? "nothing leaked " : "");
2195
2196         /*
2197          * Load all space maps as SM_ALLOC maps, then traverse the pool
2198          * claiming each block we discover.  If the pool is perfectly
2199          * consistent, the space maps will be empty when we're done.
2200          * Anything left over is a leak; any block we can't claim (because
2201          * it's not part of any space map) is a double allocation,
2202          * reference to a freed block, or an unclaimed log block.
2203          */
2204         zdb_leak_init(spa, &zcb);
2205
2206         /*
2207          * If there's a deferred-free bplist, process that first.
2208          */
2209         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2210             count_block_cb, &zcb, NULL);
2211         (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2212             count_block_cb, &zcb, NULL);
2213
2214         if (dump_opt['c'] > 1)
2215                 flags |= TRAVERSE_PREFETCH_DATA;
2216
2217         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2218
2219         if (zcb.zcb_haderrors) {
2220                 (void) printf("\nError counts:\n\n");
2221                 (void) printf("\t%5s  %s\n", "errno", "count");
2222                 for (e = 0; e < 256; e++) {
2223                         if (zcb.zcb_errors[e] != 0) {
2224                                 (void) printf("\t%5d  %llu\n",
2225                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2226                         }
2227                 }
2228         }
2229
2230         /*
2231          * Report any leaked segments.
2232          */
2233         zdb_leak_fini(spa);
2234
2235         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2236
2237         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2238         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2239
2240         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2241         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2242
2243         if (total_found == total_alloc) {
2244                 if (!dump_opt['L'])
2245                         (void) printf("\n\tNo leaks (block sum matches space"
2246                             " maps exactly)\n");
2247         } else {
2248                 (void) printf("block traversal size %llu != alloc %llu "
2249                     "(%s %lld)\n",
2250                     (u_longlong_t)total_found,
2251                     (u_longlong_t)total_alloc,
2252                     (dump_opt['L']) ? "unreachable" : "leaked",
2253                     (longlong_t)(total_alloc - total_found));
2254                 leaks = 1;
2255         }
2256
2257         if (tzb->zb_count == 0)
2258                 return (2);
2259
2260         (void) printf("\n");
2261         (void) printf("\tbp count:      %10llu\n",
2262             (u_longlong_t)tzb->zb_count);
2263         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2264             (u_longlong_t)tzb->zb_lsize,
2265             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2266         (void) printf("\tbp physical:   %10llu      avg:"
2267             " %6llu     compression: %6.2f\n",
2268             (u_longlong_t)tzb->zb_psize,
2269             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2270             (double)tzb->zb_lsize / tzb->zb_psize);
2271         (void) printf("\tbp allocated:  %10llu      avg:"
2272             " %6llu     compression: %6.2f\n",
2273             (u_longlong_t)tzb->zb_asize,
2274             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2275             (double)tzb->zb_lsize / tzb->zb_asize);
2276         (void) printf("\tbp deduped:    %10llu    ref>1:"
2277             " %6llu   deduplication: %6.2f\n",
2278             (u_longlong_t)zcb.zcb_dedup_asize,
2279             (u_longlong_t)zcb.zcb_dedup_blocks,
2280             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2281         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2282             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2283
2284         if (dump_opt['b'] >= 2) {
2285                 int l, t, level;
2286                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2287                     "\t  avg\t comp\t%%Total\tType\n");
2288
2289                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2290                         char csize[32], lsize[32], psize[32], asize[32];
2291                         char avg[32];
2292                         char *typename;
2293
2294                         if (t < DMU_OT_NUMTYPES)
2295                                 typename = dmu_ot[t].ot_name;
2296                         else
2297                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2298
2299                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2300                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2301                                     "\t%5s\t%5s\t%6s\t%s\n",
2302                                     "-",
2303                                     "-",
2304                                     "-",
2305                                     "-",
2306                                     "-",
2307                                     "-",
2308                                     "-",
2309                                     typename);
2310                                 continue;
2311                         }
2312
2313                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2314                                 level = (l == -1 ? ZB_TOTAL : l);
2315                                 zb = &zcb.zcb_type[level][t];
2316
2317                                 if (zb->zb_asize == 0)
2318                                         continue;
2319
2320                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2321                                         continue;
2322
2323                                 if (level == 0 && zb->zb_asize ==
2324                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2325                                         continue;
2326
2327                                 zdb_nicenum(zb->zb_count, csize);
2328                                 zdb_nicenum(zb->zb_lsize, lsize);
2329                                 zdb_nicenum(zb->zb_psize, psize);
2330                                 zdb_nicenum(zb->zb_asize, asize);
2331                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2332
2333                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2334                                     "\t%5.2f\t%6.2f\t",
2335                                     csize, lsize, psize, asize, avg,
2336                                     (double)zb->zb_lsize / zb->zb_psize,
2337                                     100.0 * zb->zb_asize / tzb->zb_asize);
2338
2339                                 if (level == ZB_TOTAL)
2340                                         (void) printf("%s\n", typename);
2341                                 else
2342                                         (void) printf("    L%d %s\n",
2343                                             level, typename);
2344                         }
2345                 }
2346         }
2347
2348         (void) printf("\n");
2349
2350         if (leaks)
2351                 return (2);
2352
2353         if (zcb.zcb_haderrors)
2354                 return (3);
2355
2356         return (0);
2357 }
2358
2359 typedef struct zdb_ddt_entry {
2360         ddt_key_t       zdde_key;
2361         uint64_t        zdde_ref_blocks;
2362         uint64_t        zdde_ref_lsize;
2363         uint64_t        zdde_ref_psize;
2364         uint64_t        zdde_ref_dsize;
2365         avl_node_t      zdde_node;
2366 } zdb_ddt_entry_t;
2367
2368 /* ARGSUSED */
2369 static int
2370 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2371     arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2372 {
2373         avl_tree_t *t = arg;
2374         avl_index_t where;
2375         zdb_ddt_entry_t *zdde, zdde_search;
2376
2377         if (bp == NULL)
2378                 return (0);
2379
2380         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2381                 (void) printf("traversing objset %llu, %llu objects, "
2382                     "%lu blocks so far\n",
2383                     (u_longlong_t)zb->zb_objset,
2384                     (u_longlong_t)bp->blk_fill,
2385                     avl_numnodes(t));
2386         }
2387
2388         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2389             BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata)
2390                 return (0);
2391
2392         ddt_key_fill(&zdde_search.zdde_key, bp);
2393
2394         zdde = avl_find(t, &zdde_search, &where);
2395
2396         if (zdde == NULL) {
2397                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2398                 zdde->zdde_key = zdde_search.zdde_key;
2399                 avl_insert(t, zdde, where);
2400         }
2401
2402         zdde->zdde_ref_blocks += 1;
2403         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2404         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2405         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2406
2407         return (0);
2408 }
2409
2410 static void
2411 dump_simulated_ddt(spa_t *spa)
2412 {
2413         avl_tree_t t;
2414         void *cookie = NULL;
2415         zdb_ddt_entry_t *zdde;
2416         ddt_histogram_t ddh_total = { 0 };
2417         ddt_stat_t dds_total = { 0 };
2418
2419         avl_create(&t, ddt_entry_compare,
2420             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2421
2422         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2423
2424         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2425             zdb_ddt_add_cb, &t);
2426
2427         spa_config_exit(spa, SCL_CONFIG, FTAG);
2428
2429         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2430                 ddt_stat_t dds;
2431                 uint64_t refcnt = zdde->zdde_ref_blocks;
2432                 ASSERT(refcnt != 0);
2433
2434                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2435                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2436                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2437                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2438
2439                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2440                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2441                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2442                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2443
2444                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2445
2446                 umem_free(zdde, sizeof (*zdde));
2447         }
2448
2449         avl_destroy(&t);
2450
2451         ddt_histogram_stat(&dds_total, &ddh_total);
2452
2453         (void) printf("Simulated DDT histogram:\n");
2454
2455         zpool_dump_ddt(&dds_total, &ddh_total);
2456
2457         dump_dedup_ratio(&dds_total);
2458 }
2459
2460 static void
2461 dump_zpool(spa_t *spa)
2462 {
2463         dsl_pool_t *dp = spa_get_dsl(spa);
2464         int rc = 0;
2465
2466         if (dump_opt['S']) {
2467                 dump_simulated_ddt(spa);
2468                 return;
2469         }
2470
2471         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2472                 (void) printf("\nCached configuration:\n");
2473                 dump_nvlist(spa->spa_config, 8);
2474         }
2475
2476         if (dump_opt['C'])
2477                 dump_config(spa);
2478
2479         if (dump_opt['u'])
2480                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2481
2482         if (dump_opt['D'])
2483                 dump_all_ddts(spa);
2484
2485         if (dump_opt['d'] > 2 || dump_opt['m'])
2486                 dump_metaslabs(spa);
2487
2488         if (dump_opt['d'] || dump_opt['i']) {
2489                 dump_dir(dp->dp_meta_objset);
2490                 if (dump_opt['d'] >= 3) {
2491                         dump_bpobj(&spa->spa_deferred_bpobj, "Deferred frees");
2492                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2493                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2494                                     "Pool frees");
2495                         }
2496                         dump_dtl(spa->spa_root_vdev, 0);
2497                 }
2498                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2499                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2500         }
2501         if (dump_opt['b'] || dump_opt['c'])
2502                 rc = dump_block_stats(spa);
2503
2504         if (dump_opt['s'])
2505                 show_pool_stats(spa);
2506
2507         if (dump_opt['h'])
2508                 dump_history(spa);
2509
2510         if (rc != 0)
2511                 exit(rc);
2512 }
2513
2514 #define ZDB_FLAG_CHECKSUM       0x0001
2515 #define ZDB_FLAG_DECOMPRESS     0x0002
2516 #define ZDB_FLAG_BSWAP          0x0004
2517 #define ZDB_FLAG_GBH            0x0008
2518 #define ZDB_FLAG_INDIRECT       0x0010
2519 #define ZDB_FLAG_PHYS           0x0020
2520 #define ZDB_FLAG_RAW            0x0040
2521 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2522
2523 int flagbits[256];
2524
2525 static void
2526 zdb_print_blkptr(blkptr_t *bp, int flags)
2527 {
2528         char blkbuf[BP_SPRINTF_LEN];
2529
2530         if (flags & ZDB_FLAG_BSWAP)
2531                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2532
2533         sprintf_blkptr(blkbuf, bp);
2534         (void) printf("%s\n", blkbuf);
2535 }
2536
2537 static void
2538 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2539 {
2540         int i;
2541
2542         for (i = 0; i < nbps; i++)
2543                 zdb_print_blkptr(&bp[i], flags);
2544 }
2545
2546 static void
2547 zdb_dump_gbh(void *buf, int flags)
2548 {
2549         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2550 }
2551
2552 static void
2553 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2554 {
2555         if (flags & ZDB_FLAG_BSWAP)
2556                 byteswap_uint64_array(buf, size);
2557         VERIFY(write(fileno(stdout), buf, size) == size);
2558 }
2559
2560 static void
2561 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2562 {
2563         uint64_t *d = (uint64_t *)buf;
2564         int nwords = size / sizeof (uint64_t);
2565         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2566         int i, j;
2567         char *hdr, *c;
2568
2569
2570         if (do_bswap)
2571                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2572         else
2573                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2574
2575         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2576
2577         for (i = 0; i < nwords; i += 2) {
2578                 (void) printf("%06llx:  %016llx  %016llx  ",
2579                     (u_longlong_t)(i * sizeof (uint64_t)),
2580                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2581                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2582
2583                 c = (char *)&d[i];
2584                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2585                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2586                 (void) printf("\n");
2587         }
2588 }
2589
2590 /*
2591  * There are two acceptable formats:
2592  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2593  *      child[.child]*    - For example: 0.1.1
2594  *
2595  * The second form can be used to specify arbitrary vdevs anywhere
2596  * in the heirarchy.  For example, in a pool with a mirror of
2597  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2598  */
2599 static vdev_t *
2600 zdb_vdev_lookup(vdev_t *vdev, char *path)
2601 {
2602         char *s, *p, *q;
2603         int i;
2604
2605         if (vdev == NULL)
2606                 return (NULL);
2607
2608         /* First, assume the x.x.x.x format */
2609         i = (int)strtoul(path, &s, 10);
2610         if (s == path || (s && *s != '.' && *s != '\0'))
2611                 goto name;
2612         if (i < 0 || i >= vdev->vdev_children)
2613                 return (NULL);
2614
2615         vdev = vdev->vdev_child[i];
2616         if (*s == '\0')
2617                 return (vdev);
2618         return (zdb_vdev_lookup(vdev, s+1));
2619
2620 name:
2621         for (i = 0; i < vdev->vdev_children; i++) {
2622                 vdev_t *vc = vdev->vdev_child[i];
2623
2624                 if (vc->vdev_path == NULL) {
2625                         vc = zdb_vdev_lookup(vc, path);
2626                         if (vc == NULL)
2627                                 continue;
2628                         else
2629                                 return (vc);
2630                 }
2631
2632                 p = strrchr(vc->vdev_path, '/');
2633                 p = p ? p + 1 : vc->vdev_path;
2634                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2635
2636                 if (strcmp(vc->vdev_path, path) == 0)
2637                         return (vc);
2638                 if (strcmp(p, path) == 0)
2639                         return (vc);
2640                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2641                         return (vc);
2642         }
2643
2644         return (NULL);
2645 }
2646
2647 /*
2648  * Read a block from a pool and print it out.  The syntax of the
2649  * block descriptor is:
2650  *
2651  *      pool:vdev_specifier:offset:size[:flags]
2652  *
2653  *      pool           - The name of the pool you wish to read from
2654  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2655  *      offset         - offset, in hex, in bytes
2656  *      size           - Amount of data to read, in hex, in bytes
2657  *      flags          - A string of characters specifying options
2658  *               b: Decode a blkptr at given offset within block
2659  *              *c: Calculate and display checksums
2660  *               d: Decompress data before dumping
2661  *               e: Byteswap data before dumping
2662  *               g: Display data as a gang block header
2663  *               i: Display as an indirect block
2664  *               p: Do I/O to physical offset
2665  *               r: Dump raw data to stdout
2666  *
2667  *              * = not yet implemented
2668  */
2669 static void
2670 zdb_read_block(char *thing, spa_t *spa)
2671 {
2672         blkptr_t blk, *bp = &blk;
2673         dva_t *dva = bp->blk_dva;
2674         int flags = 0;
2675         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2676         zio_t *zio;
2677         vdev_t *vd;
2678         void *pbuf, *lbuf, *buf;
2679         char *s, *p, *dup, *vdev, *flagstr;
2680         int i, error;
2681
2682         dup = strdup(thing);
2683         s = strtok(dup, ":");
2684         vdev = s ? s : "";
2685         s = strtok(NULL, ":");
2686         offset = strtoull(s ? s : "", NULL, 16);
2687         s = strtok(NULL, ":");
2688         size = strtoull(s ? s : "", NULL, 16);
2689         s = strtok(NULL, ":");
2690         flagstr = s ? s : "";
2691
2692         s = NULL;
2693         if (size == 0)
2694                 s = "size must not be zero";
2695         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2696                 s = "size must be a multiple of sector size";
2697         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2698                 s = "offset must be a multiple of sector size";
2699         if (s) {
2700                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2701                 free(dup);
2702                 return;
2703         }
2704
2705         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2706                 for (i = 0; flagstr[i]; i++) {
2707                         int bit = flagbits[(uchar_t)flagstr[i]];
2708
2709                         if (bit == 0) {
2710                                 (void) printf("***Invalid flag: %c\n",
2711                                     flagstr[i]);
2712                                 continue;
2713                         }
2714                         flags |= bit;
2715
2716                         /* If it's not something with an argument, keep going */
2717                         if ((bit & (ZDB_FLAG_CHECKSUM |
2718                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2719                                 continue;
2720
2721                         p = &flagstr[i + 1];
2722                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2723                                 blkptr_offset = strtoull(p, &p, 16);
2724                         if (*p != ':' && *p != '\0') {
2725                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2726                                 free(dup);
2727                                 return;
2728                         }
2729                 }
2730         }
2731
2732         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2733         if (vd == NULL) {
2734                 (void) printf("***Invalid vdev: %s\n", vdev);
2735                 free(dup);
2736                 return;
2737         } else {
2738                 if (vd->vdev_path)
2739                         (void) fprintf(stderr, "Found vdev: %s\n",
2740                             vd->vdev_path);
2741                 else
2742                         (void) fprintf(stderr, "Found vdev type: %s\n",
2743                             vd->vdev_ops->vdev_op_type);
2744         }
2745
2746         psize = size;
2747         lsize = size;
2748
2749         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2750         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2751
2752         BP_ZERO(bp);
2753
2754         DVA_SET_VDEV(&dva[0], vd->vdev_id);
2755         DVA_SET_OFFSET(&dva[0], offset);
2756         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2757         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2758
2759         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2760
2761         BP_SET_LSIZE(bp, lsize);
2762         BP_SET_PSIZE(bp, psize);
2763         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2764         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2765         BP_SET_TYPE(bp, DMU_OT_NONE);
2766         BP_SET_LEVEL(bp, 0);
2767         BP_SET_DEDUP(bp, 0);
2768         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2769
2770         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2771         zio = zio_root(spa, NULL, NULL, 0);
2772
2773         if (vd == vd->vdev_top) {
2774                 /*
2775                  * Treat this as a normal block read.
2776                  */
2777                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2778                     ZIO_PRIORITY_SYNC_READ,
2779                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2780         } else {
2781                 /*
2782                  * Treat this as a vdev child I/O.
2783                  */
2784                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2785                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2786                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2787                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2788                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2789         }
2790
2791         error = zio_wait(zio);
2792         spa_config_exit(spa, SCL_STATE, FTAG);
2793
2794         if (error) {
2795                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2796                 goto out;
2797         }
2798
2799         if (flags & ZDB_FLAG_DECOMPRESS) {
2800                 /*
2801                  * We don't know how the data was compressed, so just try
2802                  * every decompress function at every inflated blocksize.
2803                  */
2804                 enum zio_compress c;
2805                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2806                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2807
2808                 bcopy(pbuf, pbuf2, psize);
2809
2810                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2811                     SPA_MAXBLOCKSIZE - psize) == 0);
2812
2813                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2814                     SPA_MAXBLOCKSIZE - psize) == 0);
2815
2816                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2817                     lsize -= SPA_MINBLOCKSIZE) {
2818                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2819                                 if (zio_decompress_data(c, pbuf, lbuf,
2820                                     psize, lsize) == 0 &&
2821                                     zio_decompress_data(c, pbuf2, lbuf2,
2822                                     psize, lsize) == 0 &&
2823                                     bcmp(lbuf, lbuf2, lsize) == 0)
2824                                         break;
2825                         }
2826                         if (c != ZIO_COMPRESS_FUNCTIONS)
2827                                 break;
2828                         lsize -= SPA_MINBLOCKSIZE;
2829                 }
2830
2831                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2832                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2833
2834                 if (lsize <= psize) {
2835                         (void) printf("Decompress of %s failed\n", thing);
2836                         goto out;
2837                 }
2838                 buf = lbuf;
2839                 size = lsize;
2840         } else {
2841                 buf = pbuf;
2842                 size = psize;
2843         }
2844
2845         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2846                 zdb_print_blkptr((blkptr_t *)(void *)
2847                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2848         else if (flags & ZDB_FLAG_RAW)
2849                 zdb_dump_block_raw(buf, size, flags);
2850         else if (flags & ZDB_FLAG_INDIRECT)
2851                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2852                     flags);
2853         else if (flags & ZDB_FLAG_GBH)
2854                 zdb_dump_gbh(buf, flags);
2855         else
2856                 zdb_dump_block(thing, buf, size, flags);
2857
2858 out:
2859         umem_free(pbuf, SPA_MAXBLOCKSIZE);
2860         umem_free(lbuf, SPA_MAXBLOCKSIZE);
2861         free(dup);
2862 }
2863
2864 static boolean_t
2865 pool_match(nvlist_t *cfg, char *tgt)
2866 {
2867         uint64_t v, guid = strtoull(tgt, NULL, 0);
2868         char *s;
2869
2870         if (guid != 0) {
2871                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2872                         return (v == guid);
2873         } else {
2874                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2875                         return (strcmp(s, tgt) == 0);
2876         }
2877         return (B_FALSE);
2878 }
2879
2880 static char *
2881 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2882 {
2883         nvlist_t *pools;
2884         nvlist_t *match = NULL;
2885         char *name = NULL;
2886         char *sepp = NULL;
2887         char sep;
2888         int count = 0;
2889         importargs_t args = { 0 };
2890
2891         args.paths = dirc;
2892         args.path = dirv;
2893         args.can_be_active = B_TRUE;
2894
2895         if ((sepp = strpbrk(*target, "/@")) != NULL) {
2896                 sep = *sepp;
2897                 *sepp = '\0';
2898         }
2899
2900         pools = zpool_search_import(g_zfs, &args);
2901
2902         if (pools != NULL) {
2903                 nvpair_t *elem = NULL;
2904                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2905                         verify(nvpair_value_nvlist(elem, configp) == 0);
2906                         if (pool_match(*configp, *target)) {
2907                                 count++;
2908                                 if (match != NULL) {
2909                                         /* print previously found config */
2910                                         if (name != NULL) {
2911                                                 (void) printf("%s\n", name);
2912                                                 dump_nvlist(match, 8);
2913                                                 name = NULL;
2914                                         }
2915                                         (void) printf("%s\n",
2916                                             nvpair_name(elem));
2917                                         dump_nvlist(*configp, 8);
2918                                 } else {
2919                                         match = *configp;
2920                                         name = nvpair_name(elem);
2921                                 }
2922                         }
2923                 }
2924         }
2925         if (count > 1)
2926                 (void) fatal("\tMatched %d pools - use pool GUID "
2927                     "instead of pool name or \n"
2928                     "\tpool name part of a dataset name to select pool", count);
2929
2930         if (sepp)
2931                 *sepp = sep;
2932         /*
2933          * If pool GUID was specified for pool id, replace it with pool name
2934          */
2935         if (name && (strstr(*target, name) != *target)) {
2936                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
2937
2938                 *target = umem_alloc(sz, UMEM_NOFAIL);
2939                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
2940         }
2941
2942         *configp = name ? match : NULL;
2943
2944         return (name);
2945 }
2946
2947 int
2948 main(int argc, char **argv)
2949 {
2950         int i, c;
2951         struct rlimit rl = { 1024, 1024 };
2952         spa_t *spa = NULL;
2953         objset_t *os = NULL;
2954         int dump_all = 1;
2955         int verbose = 0;
2956         int error = 0;
2957         char **searchdirs = NULL;
2958         int nsearch = 0;
2959         char *target;
2960         nvlist_t *policy = NULL;
2961         uint64_t max_txg = UINT64_MAX;
2962         int rewind = ZPOOL_NEVER_REWIND;
2963
2964         (void) setrlimit(RLIMIT_NOFILE, &rl);
2965         (void) enable_extended_FILE_stdio(-1, -1);
2966
2967         dprintf_setup(&argc, argv);
2968
2969         while ((c = getopt(argc, argv, "bcdhilmsuCDRSAFLXevp:t:U:P")) != -1) {
2970                 switch (c) {
2971                 case 'b':
2972                 case 'c':
2973                 case 'd':
2974                 case 'h':
2975                 case 'i':
2976                 case 'l':
2977                 case 'm':
2978                 case 's':
2979                 case 'u':
2980                 case 'C':
2981                 case 'D':
2982                 case 'R':
2983                 case 'S':
2984                         dump_opt[c]++;
2985                         dump_all = 0;
2986                         break;
2987                 case 'A':
2988                 case 'F':
2989                 case 'L':
2990                 case 'X':
2991                 case 'e':
2992                 case 'P':
2993                         dump_opt[c]++;
2994                         break;
2995                 case 'v':
2996                         verbose++;
2997                         break;
2998                 case 'p':
2999                         if (searchdirs == NULL) {
3000                                 searchdirs = umem_alloc(sizeof (char *),
3001                                     UMEM_NOFAIL);
3002                         } else {
3003                                 char **tmp = umem_alloc((nsearch + 1) *
3004                                     sizeof (char *), UMEM_NOFAIL);
3005                                 bcopy(searchdirs, tmp, nsearch *
3006                                     sizeof (char *));
3007                                 umem_free(searchdirs,
3008                                     nsearch * sizeof (char *));
3009                                 searchdirs = tmp;
3010                         }
3011                         searchdirs[nsearch++] = optarg;
3012                         break;
3013                 case 't':
3014                         max_txg = strtoull(optarg, NULL, 0);
3015                         if (max_txg < TXG_INITIAL) {
3016                                 (void) fprintf(stderr, "incorrect txg "
3017                                     "specified: %s\n", optarg);
3018                                 usage();
3019                         }
3020                         break;
3021                 case 'U':
3022                         spa_config_path = optarg;
3023                         break;
3024                 default:
3025                         usage();
3026                         break;
3027                 }
3028         }
3029
3030         if (!dump_opt['e'] && searchdirs != NULL) {
3031                 (void) fprintf(stderr, "-p option requires use of -e\n");
3032                 usage();
3033         }
3034
3035         kernel_init(FREAD);
3036         g_zfs = libzfs_init();
3037         ASSERT(g_zfs != NULL);
3038
3039         if (dump_all)
3040                 verbose = MAX(verbose, 1);
3041
3042         for (c = 0; c < 256; c++) {
3043                 if (dump_all && !strchr("elAFLRSXP", c))
3044                         dump_opt[c] = 1;
3045                 if (dump_opt[c])
3046                         dump_opt[c] += verbose;
3047         }
3048
3049         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3050         zfs_recover = (dump_opt['A'] > 1);
3051
3052         argc -= optind;
3053         argv += optind;
3054
3055         if (argc < 2 && dump_opt['R'])
3056                 usage();
3057         if (argc < 1) {
3058                 if (!dump_opt['e'] && dump_opt['C']) {
3059                         dump_cachefile(spa_config_path);
3060                         return (0);
3061                 }
3062                 usage();
3063         }
3064
3065         if (dump_opt['l']) {
3066                 dump_label(argv[0]);
3067                 return (0);
3068         }
3069
3070         if (dump_opt['X'] || dump_opt['F'])
3071                 rewind = ZPOOL_DO_REWIND |
3072                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3073
3074         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3075             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3076             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3077                 fatal("internal error: %s", strerror(ENOMEM));
3078
3079         error = 0;
3080         target = argv[0];
3081
3082         if (dump_opt['e']) {
3083                 nvlist_t *cfg = NULL;
3084                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3085
3086                 error = ENOENT;
3087                 if (name) {
3088                         if (dump_opt['C'] > 1) {
3089                                 (void) printf("\nConfiguration for import:\n");
3090                                 dump_nvlist(cfg, 8);
3091                         }
3092                         if (nvlist_add_nvlist(cfg,
3093                             ZPOOL_REWIND_POLICY, policy) != 0) {
3094                                 fatal("can't open '%s': %s",
3095                                     target, strerror(ENOMEM));
3096                         }
3097                         if ((error = spa_import(name, cfg, NULL,
3098                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3099                                 error = spa_import(name, cfg, NULL,
3100                                     ZFS_IMPORT_VERBATIM);
3101                         }
3102                 }
3103         }
3104
3105         if (error == 0) {
3106                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3107                         error = spa_open_rewind(target, &spa, FTAG, policy,
3108                             NULL);
3109                         if (error) {
3110                                 /*
3111                                  * If we're missing the log device then
3112                                  * try opening the pool after clearing the
3113                                  * log state.
3114                                  */
3115                                 mutex_enter(&spa_namespace_lock);
3116                                 if ((spa = spa_lookup(target)) != NULL &&
3117                                     spa->spa_log_state == SPA_LOG_MISSING) {
3118                                         spa->spa_log_state = SPA_LOG_CLEAR;
3119                                         error = 0;
3120                                 }
3121                                 mutex_exit(&spa_namespace_lock);
3122
3123                                 if (!error) {
3124                                         error = spa_open_rewind(target, &spa,
3125                                             FTAG, policy, NULL);
3126                                 }
3127                         }
3128                 } else {
3129                         error = dmu_objset_own(target, DMU_OST_ANY,
3130                             B_TRUE, FTAG, &os);
3131                 }
3132         }
3133         nvlist_free(policy);
3134
3135         if (error)
3136                 fatal("can't open '%s': %s", target, strerror(error));
3137
3138         argv++;
3139         argc--;
3140         if (!dump_opt['R']) {
3141                 if (argc > 0) {
3142                         zopt_objects = argc;
3143                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3144                         for (i = 0; i < zopt_objects; i++) {
3145                                 errno = 0;
3146                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3147                                 if (zopt_object[i] == 0 && errno != 0)
3148                                         fatal("bad number %s: %s",
3149                                             argv[i], strerror(errno));
3150                         }
3151                 }
3152                 (os != NULL) ? dump_dir(os) : dump_zpool(spa);
3153         } else {
3154                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3155                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3156                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3157                 flagbits['e'] = ZDB_FLAG_BSWAP;
3158                 flagbits['g'] = ZDB_FLAG_GBH;
3159                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3160                 flagbits['p'] = ZDB_FLAG_PHYS;
3161                 flagbits['r'] = ZDB_FLAG_RAW;
3162
3163                 for (i = 0; i < argc; i++)
3164                         zdb_read_block(argv[i], spa);
3165         }
3166
3167         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3168
3169         fuid_table_destroy();
3170         sa_loaded = B_FALSE;
3171
3172         libzfs_fini(g_zfs);
3173         kernel_fini();
3174
3175         return (0);
3176 }