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