cddl/contrib/opensolaris/cmd/zdb/zdb.c

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