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 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2012 by Delphix. All rights reserved.
  25  */
  26
  27 #include <stdio.h>
  28 #include <stdio_ext.h>
  29 #include <stdlib.h>
  30 #include <ctype.h>
  31 #include <sys/zfs_context.h>
  32 #include <sys/spa.h>
  33 #include <sys/spa_impl.h>
  34 #include <sys/dmu.h>
  35 #include <sys/zap.h>
  36 #include <sys/fs/zfs.h>
  37 #include <sys/zfs_znode.h>
  38 #include <sys/zfs_sa.h>
  39 #include <sys/sa.h>
  40 #include <sys/sa_impl.h>
  41 #include <sys/vdev.h>
  42 #include <sys/vdev_impl.h>
  43 #include <sys/metaslab_impl.h>
  44 #include <sys/dmu_objset.h>
  45 #include <sys/dsl_dir.h>
  46 #include <sys/dsl_dataset.h>
  47 #include <sys/dsl_pool.h>
  48 #include <sys/dbuf.h>
  49 #include <sys/zil.h>
  50 #include <sys/zil_impl.h>
  51 #include <sys/stat.h>
  52 #include <sys/resource.h>
  53 #include <sys/dmu_traverse.h>
  54 #include <sys/zio_checksum.h>
  55 #include <sys/zio_compress.h>
  56 #include <sys/zfs_fuid.h>
  57 #include <sys/arc.h>
  58 #include <sys/ddt.h>
  59 #include <sys/zfeature.h>
  60 #undef ZFS_MAXNAMELEN
  61 #include <libzfs.h>
  62
  63 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \
  64     zio_compress_table[(idx)].ci_name : "UNKNOWN")
  65 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \
  66     zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  67 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \
  68     dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ? \
  69     dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
  70 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : DMU_OT_NUMTYPES)
  71
  72 #ifndef lint
  73 extern int zfs_recover;
  74 #else
  75 int zfs_recover;
  76 #endif
  77
  78 const char cmdname[] = "zdb";
  79 uint8_t dump_opt[256];
  80
  81 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  82
  83 extern void dump_intent_log(zilog_t *);
  84 uint64_t *zopt_object = NULL;
  85 int zopt_objects = 0;
  86 libzfs_handle_t *g_zfs;
  87
  88 /*
  89  * These libumem hooks provide a reasonable set of defaults for the allocator's
  90  * debugging facilities.
  91  */
  92 const char *
  93 _umem_debug_init(void)
  94 {
  95         return ("default,verbose"); /* $UMEM_DEBUG setting */
  96 }
  97
  98 const char *
  99 _umem_logging_init(void)
 100 {
 101         return ("fail,contents"); /* $UMEM_LOGGING setting */
 102 }
 103
 104 static void
 105 usage(void)
 106 {
 107         (void) fprintf(stderr,
 108             "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
 109             "poolname [object...]\n"
 110             "       %s [-divPA] [-e -p path...] dataset [object...]\n"
 111             "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] "
 112             "poolname [vdev [metaslab...]]\n"
 113             "       %s -R [-A] [-e [-p path...]] poolname "
 114             "vdev:offset:size[:flags]\n"
 115             "       %s -S [-PA] [-e [-p path...]] poolname\n"
 116             "       %s -l [-uA] device\n"
 117             "       %s -C [-A] [-U config]\n\n",
 118             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 119
 120         (void) fprintf(stderr, "    Dataset name must include at least one "
 121             "separator character '/' or '@'\n");
 122         (void) fprintf(stderr, "    If dataset name is specified, only that "
 123             "dataset is dumped\n");
 124         (void) fprintf(stderr, "    If object numbers are specified, only "
 125             "those objects are dumped\n\n");
 126         (void) fprintf(stderr, "    Options to control amount of output:\n");
 127         (void) fprintf(stderr, "        -u uberblock\n");
 128         (void) fprintf(stderr, "        -d dataset(s)\n");
 129         (void) fprintf(stderr, "        -i intent logs\n");
 130         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 131         (void) fprintf(stderr, "        -h pool history\n");
 132         (void) fprintf(stderr, "        -b block statistics\n");
 133         (void) fprintf(stderr, "        -m metaslabs\n");
 134         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 135             "all data) blocks\n");
 136         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 137         (void) fprintf(stderr, "        -D dedup statistics\n");
 138         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 139         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 140         (void) fprintf(stderr, "        -l dump label contents\n");
 141         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 142             "load spacemaps)\n");
 143         (void) fprintf(stderr, "        -R read and display block from a "
 144             "device\n\n");
 145         (void) fprintf(stderr, "    Below options are intended for use "
 146             "with other options (except -l):\n");
 147         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 148             "panic recovery (-AA) or both (-AAA)\n");
 149         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 150             "safe range of transaction groups\n");
 151         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 152             "cachefile\n");
 153         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 154             "work with dataset)\n");
 155         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 156             "has altroot/not in a cachefile\n");
 157         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 158             "-e to specify path to vdev dir\n");
 159         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 160         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 161             "searching for uberblocks\n");
 162         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 163             "to make only that option verbose\n");
 164         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 165         exit(1);
 166 }
 167
 168 /*
 169  * Called for usage errors that are discovered after a call to spa_open(),
 170  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 171  */
 172
 173 static void
 174 fatal(const char *fmt, ...)
 175 {
 176         va_list ap;
 177
 178         va_start(ap, fmt);
 179         (void) fprintf(stderr, "%s: ", cmdname);
 180         (void) vfprintf(stderr, fmt, ap);
 181         va_end(ap);
 182         (void) fprintf(stderr, "\n");
 183
 184         exit(1);
 185 }
 186
 187 /* ARGSUSED */
 188 static void
 189 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 190 {
 191         nvlist_t *nv;
 192         size_t nvsize = *(uint64_t *)data;
 193         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 194
 195         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 196
 197         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 198
 199         umem_free(packed, nvsize);
 200
 201         dump_nvlist(nv, 8);
 202
 203         nvlist_free(nv);
 204 }
 205
 206 static void
 207 zdb_nicenum(uint64_t num, char *buf)
 208 {
 209         if (dump_opt['P'])
 210                 (void) sprintf(buf, "%llu", (longlong_t)num);
 211         else
 212                 nicenum(num, buf);
 213 }
 214
 215 const char dump_zap_stars[] = "****************************************";
 216 const int dump_zap_width = sizeof (dump_zap_stars) - 1;
 217
 218 static void
 219 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
 220 {
 221         int i;
 222         int minidx = ZAP_HISTOGRAM_SIZE - 1;
 223         int maxidx = 0;
 224         uint64_t max = 0;
 225
 226         for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
 227                 if (histo[i] > max)
 228                         max = histo[i];
 229                 if (histo[i] > 0 && i > maxidx)
 230                         maxidx = i;
 231                 if (histo[i] > 0 && i < minidx)
 232                         minidx = i;
 233         }
 234
 235         if (max < dump_zap_width)
 236                 max = dump_zap_width;
 237
 238         for (i = minidx; i <= maxidx; i++)
 239                 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
 240                     &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
 241 }
 242
 243 static void
 244 dump_zap_stats(objset_t *os, uint64_t object)
 245 {
 246         int error;
 247         zap_stats_t zs;
 248
 249         error = zap_get_stats(os, object, &zs);
 250         if (error)
 251                 return;
 252
 253         if (zs.zs_ptrtbl_len == 0) {
 254                 ASSERT(zs.zs_num_blocks == 1);
 255                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 256                     (u_longlong_t)zs.zs_blocksize,
 257                     (u_longlong_t)zs.zs_num_entries);
 258                 return;
 259         }
 260
 261         (void) printf("\tFat ZAP stats:\n");
 262
 263         (void) printf("\t\tPointer table:\n");
 264         (void) printf("\t\t\t%llu elements\n",
 265             (u_longlong_t)zs.zs_ptrtbl_len);
 266         (void) printf("\t\t\tzt_blk: %llu\n",
 267             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 268         (void) printf("\t\t\tzt_numblks: %llu\n",
 269             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 270         (void) printf("\t\t\tzt_shift: %llu\n",
 271             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 272         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 273             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 274         (void) printf("\t\t\tzt_nextblk: %llu\n",
 275             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 276
 277         (void) printf("\t\tZAP entries: %llu\n",
 278             (u_longlong_t)zs.zs_num_entries);
 279         (void) printf("\t\tLeaf blocks: %llu\n",
 280             (u_longlong_t)zs.zs_num_leafs);
 281         (void) printf("\t\tTotal blocks: %llu\n",
 282             (u_longlong_t)zs.zs_num_blocks);
 283         (void) printf("\t\tzap_block_type: 0x%llx\n",
 284             (u_longlong_t)zs.zs_block_type);
 285         (void) printf("\t\tzap_magic: 0x%llx\n",
 286             (u_longlong_t)zs.zs_magic);
 287         (void) printf("\t\tzap_salt: 0x%llx\n",
 288             (u_longlong_t)zs.zs_salt);
 289
 290         (void) printf("\t\tLeafs with 2^n pointers:\n");
 291         dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
 292
 293         (void) printf("\t\tBlocks with n*5 entries:\n");
 294         dump_zap_histogram(zs.zs_blocks_with_n5_entries);
 295
 296         (void) printf("\t\tBlocks n/10 full:\n");
 297         dump_zap_histogram(zs.zs_blocks_n_tenths_full);
 298
 299         (void) printf("\t\tEntries with n chunks:\n");
 300         dump_zap_histogram(zs.zs_entries_using_n_chunks);
 301
 302         (void) printf("\t\tBuckets with n entries:\n");
 303         dump_zap_histogram(zs.zs_buckets_with_n_entries);
 304 }
 305
 306 /*ARGSUSED*/
 307 static void
 308 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 309 {
 310 }
 311
 312 /*ARGSUSED*/
 313 static void
 314 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 315 {
 316         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 317 }
 318
 319 /*ARGSUSED*/
 320 void
 321 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 322 {
 323 }
 324
 325 /*ARGSUSED*/
 326 static void
 327 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 328 {
 329 }
 330
 331 /*ARGSUSED*/
 332 static void
 333 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 334 {
 335         zap_cursor_t zc;
 336         zap_attribute_t attr;
 337         void *prop;
 338         int i;
 339
 340         dump_zap_stats(os, object);
 341         (void) printf("\n");
 342
 343         for (zap_cursor_init(&zc, os, object);
 344             zap_cursor_retrieve(&zc, &attr) == 0;
 345             zap_cursor_advance(&zc)) {
 346                 (void) printf("\t\t%s = ", attr.za_name);
 347                 if (attr.za_num_integers == 0) {
 348                         (void) printf("\n");
 349                         continue;
 350                 }
 351                 prop = umem_zalloc(attr.za_num_integers *
 352                     attr.za_integer_length, UMEM_NOFAIL);
 353                 (void) zap_lookup(os, object, attr.za_name,
 354                     attr.za_integer_length, attr.za_num_integers, prop);
 355                 if (attr.za_integer_length == 1) {
 356                         (void) printf("%s", (char *)prop);
 357                 } else {
 358                         for (i = 0; i < attr.za_num_integers; i++) {
 359                                 switch (attr.za_integer_length) {
 360                                 case 2:
 361                                         (void) printf("%u ",
 362                                             ((uint16_t *)prop)[i]);
 363                                         break;
 364                                 case 4:
 365                                         (void) printf("%u ",
 366                                             ((uint32_t *)prop)[i]);
 367                                         break;
 368                                 case 8:
 369                                         (void) printf("%lld ",
 370                                             (u_longlong_t)((int64_t *)prop)[i]);
 371                                         break;
 372                                 }
 373                         }
 374                 }
 375                 (void) printf("\n");
 376                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 377         }
 378         zap_cursor_fini(&zc);
 379 }
 380
 381 /*ARGSUSED*/
 382 static void
 383 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 384 {
 385         dump_zap_stats(os, object);
 386         /* contents are printed elsewhere, properly decoded */
 387 }
 388
 389 /*ARGSUSED*/
 390 static void
 391 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 392 {
 393         zap_cursor_t zc;
 394         zap_attribute_t attr;
 395
 396         dump_zap_stats(os, object);
 397         (void) printf("\n");
 398
 399         for (zap_cursor_init(&zc, os, object);
 400             zap_cursor_retrieve(&zc, &attr) == 0;
 401             zap_cursor_advance(&zc)) {
 402                 (void) printf("\t\t%s = ", attr.za_name);
 403                 if (attr.za_num_integers == 0) {
 404                         (void) printf("\n");
 405                         continue;
 406                 }
 407                 (void) printf(" %llx : [%d:%d:%d]\n",
 408                     (u_longlong_t)attr.za_first_integer,
 409                     (int)ATTR_LENGTH(attr.za_first_integer),
 410                     (int)ATTR_BSWAP(attr.za_first_integer),
 411                     (int)ATTR_NUM(attr.za_first_integer));
 412         }
 413         zap_cursor_fini(&zc);
 414 }
 415
 416 /*ARGSUSED*/
 417 static void
 418 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 419 {
 420         zap_cursor_t zc;
 421         zap_attribute_t attr;
 422         uint16_t *layout_attrs;
 423         int i;
 424
 425         dump_zap_stats(os, object);
 426         (void) printf("\n");
 427
 428         for (zap_cursor_init(&zc, os, object);
 429             zap_cursor_retrieve(&zc, &attr) == 0;
 430             zap_cursor_advance(&zc)) {
 431                 (void) printf("\t\t%s = [", attr.za_name);
 432                 if (attr.za_num_integers == 0) {
 433                         (void) printf("\n");
 434                         continue;
 435                 }
 436
 437                 VERIFY(attr.za_integer_length == 2);
 438                 layout_attrs = umem_zalloc(attr.za_num_integers *
 439                     attr.za_integer_length, UMEM_NOFAIL);
 440
 441                 VERIFY(zap_lookup(os, object, attr.za_name,
 442                     attr.za_integer_length,
 443                     attr.za_num_integers, layout_attrs) == 0);
 444
 445                 for (i = 0; i != attr.za_num_integers; i++)
 446                         (void) printf(" %d ", (int)layout_attrs[i]);
 447                 (void) printf("]\n");
 448                 umem_free(layout_attrs,
 449                     attr.za_num_integers * attr.za_integer_length);
 450         }
 451         zap_cursor_fini(&zc);
 452 }
 453
 454 /*ARGSUSED*/
 455 static void
 456 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 457 {
 458         zap_cursor_t zc;
 459         zap_attribute_t attr;
 460         const char *typenames[] = {
 461                 /* 0 */ "not specified",
 462                 /* 1 */ "FIFO",
 463                 /* 2 */ "Character Device",
 464                 /* 3 */ "3 (invalid)",
 465                 /* 4 */ "Directory",
 466                 /* 5 */ "5 (invalid)",
 467                 /* 6 */ "Block Device",
 468                 /* 7 */ "7 (invalid)",
 469                 /* 8 */ "Regular File",
 470                 /* 9 */ "9 (invalid)",
 471                 /* 10 */ "Symbolic Link",
 472                 /* 11 */ "11 (invalid)",
 473                 /* 12 */ "Socket",
 474                 /* 13 */ "Door",
 475                 /* 14 */ "Event Port",
 476                 /* 15 */ "15 (invalid)",
 477         };
 478
 479         dump_zap_stats(os, object);
 480         (void) printf("\n");
 481
 482         for (zap_cursor_init(&zc, os, object);
 483             zap_cursor_retrieve(&zc, &attr) == 0;
 484             zap_cursor_advance(&zc)) {
 485                 (void) printf("\t\t%s = %lld (type: %s)\n",
 486                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 487                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 488         }
 489         zap_cursor_fini(&zc);
 490 }
 491
 492 static void
 493 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 494 {
 495         uint64_t alloc, offset, entry;
 496         uint8_t mapshift = sm->sm_shift;
 497         uint64_t mapstart = sm->sm_start;
 498         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 499                             "INVALID", "INVALID", "INVALID", "INVALID" };
 500
 501         if (smo->smo_object == 0)
 502                 return;
 503
 504         /*
 505          * Print out the freelist entries in both encoded and decoded form.
 506          */
 507         alloc = 0;
 508         for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 509                 VERIFY3U(0, ==, dmu_read(os, smo->smo_object, offset,
 510                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 511                 if (SM_DEBUG_DECODE(entry)) {
 512                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 513                             (u_longlong_t)(offset / sizeof (entry)),
 514                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 515                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 516                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 517                 } else {
 518                         (void) printf("\t    [%6llu]    %c  range:"
 519                             " %010llx-%010llx  size: %06llx\n",
 520                             (u_longlong_t)(offset / sizeof (entry)),
 521                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 522                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 523                             mapshift) + mapstart),
 524                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 525                             mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
 526                             mapshift)),
 527                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 528                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 529                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 530                         else
 531                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 532                 }
 533         }
 534         if (alloc != smo->smo_alloc) {
 535                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 536                     "with space map summary (%llu)\n",
 537                     (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
 538         }
 539 }
 540
 541 static void
 542 dump_metaslab_stats(metaslab_t *msp)
 543 {
 544         char maxbuf[32];
 545         space_map_t *sm = &msp->ms_map;
 546         avl_tree_t *t = sm->sm_pp_root;
 547         int free_pct = sm->sm_space * 100 / sm->sm_size;
 548
 549         zdb_nicenum(space_map_maxsize(sm), maxbuf);
 550
 551         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 552             "segments", avl_numnodes(t), "maxsize", maxbuf,
 553             "freepct", free_pct);
 554 }
 555
 556 static void
 557 dump_metaslab(metaslab_t *msp)
 558 {
 559         vdev_t *vd = msp->ms_group->mg_vd;
 560         spa_t *spa = vd->vdev_spa;
 561         space_map_t *sm = &msp->ms_map;
 562         space_map_obj_t *smo = &msp->ms_smo;
 563         char freebuf[32];
 564
 565         zdb_nicenum(sm->sm_size - smo->smo_alloc, freebuf);
 566
 567         (void) printf(
 568             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 569             (u_longlong_t)(sm->sm_start / sm->sm_size),
 570             (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
 571
 572         if (dump_opt['m'] > 1 && !dump_opt['L']) {
 573                 mutex_enter(&msp->ms_lock);
 574                 space_map_load_wait(sm);
 575                 if (!sm->sm_loaded)
 576                         VERIFY(space_map_load(sm, zfs_metaslab_ops,
 577                             SM_FREE, smo, spa->spa_meta_objset) == 0);
 578                 dump_metaslab_stats(msp);
 579                 space_map_unload(sm);
 580                 mutex_exit(&msp->ms_lock);
 581         }
 582
 583         if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
 584                 ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
 585
 586                 mutex_enter(&msp->ms_lock);
 587                 dump_spacemap(spa->spa_meta_objset, smo, sm);
 588                 mutex_exit(&msp->ms_lock);
 589         }
 590 }
 591
 592 static void
 593 print_vdev_metaslab_header(vdev_t *vd)
 594 {
 595         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 596             (u_longlong_t)vd->vdev_id,
 597             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 598             "offset", "spacemap", "free");
 599         (void) printf("\t%15s   %19s   %15s   %10s\n",
 600             "---------------", "-------------------",
 601             "---------------", "-------------");
 602 }
 603
 604 static void
 605 dump_metaslabs(spa_t *spa)
 606 {
 607         vdev_t *vd, *rvd = spa->spa_root_vdev;
 608         uint64_t m, c = 0, children = rvd->vdev_children;
 609
 610         (void) printf("\nMetaslabs:\n");
 611
 612         if (!dump_opt['d'] && zopt_objects > 0) {
 613                 c = zopt_object[0];
 614
 615                 if (c >= children)
 616                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 617
 618                 if (zopt_objects > 1) {
 619                         vd = rvd->vdev_child[c];
 620                         print_vdev_metaslab_header(vd);
 621
 622                         for (m = 1; m < zopt_objects; m++) {
 623                                 if (zopt_object[m] < vd->vdev_ms_count)
 624                                         dump_metaslab(
 625                                             vd->vdev_ms[zopt_object[m]]);
 626                                 else
 627                                         (void) fprintf(stderr, "bad metaslab "
 628                                             "number %llu\n",
 629                                             (u_longlong_t)zopt_object[m]);
 630                         }
 631                         (void) printf("\n");
 632                         return;
 633                 }
 634                 children = c + 1;
 635         }
 636         for (; c < children; c++) {
 637                 vd = rvd->vdev_child[c];
 638                 print_vdev_metaslab_header(vd);
 639
 640                 for (m = 0; m < vd->vdev_ms_count; m++)
 641                         dump_metaslab(vd->vdev_ms[m]);
 642                 (void) printf("\n");
 643         }
 644 }
 645
 646 static void
 647 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 648 {
 649         const ddt_phys_t *ddp = dde->dde_phys;
 650         const ddt_key_t *ddk = &dde->dde_key;
 651         char *types[4] = { "ditto", "single", "double", "triple" };
 652         char blkbuf[BP_SPRINTF_LEN];
 653         blkptr_t blk;
 654         int p;
 655
 656         for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 657                 if (ddp->ddp_phys_birth == 0)
 658                         continue;
 659                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 660                 sprintf_blkptr(blkbuf, &blk);
 661                 (void) printf("index %llx refcnt %llu %s %s\n",
 662                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 663                     types[p], blkbuf);
 664         }
 665 }
 666
 667 static void
 668 dump_dedup_ratio(const ddt_stat_t *dds)
 669 {
 670         double rL, rP, rD, D, dedup, compress, copies;
 671
 672         if (dds->dds_blocks == 0)
 673                 return;
 674
 675         rL = (double)dds->dds_ref_lsize;
 676         rP = (double)dds->dds_ref_psize;
 677         rD = (double)dds->dds_ref_dsize;
 678         D = (double)dds->dds_dsize;
 679
 680         dedup = rD / D;
 681         compress = rL / rP;
 682         copies = rD / rP;
 683
 684         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 685             "dedup * compress / copies = %.2f\n\n",
 686             dedup, compress, copies, dedup * compress / copies);
 687 }
 688
 689 static void
 690 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 691 {
 692         char name[DDT_NAMELEN];
 693         ddt_entry_t dde;
 694         uint64_t walk = 0;
 695         dmu_object_info_t doi;
 696         uint64_t count, dspace, mspace;
 697         int error;
 698
 699         error = ddt_object_info(ddt, type, class, &doi);
 700
 701         if (error == ENOENT)
 702                 return;
 703         ASSERT(error == 0);
 704
 705         error = ddt_object_count(ddt, type, class, &count);
 706         ASSERT(error == 0);
 707         if (count == 0)
 708                 return;
 709
 710         dspace = doi.doi_physical_blocks_512 << 9;
 711         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 712
 713         ddt_object_name(ddt, type, class, name);
 714
 715         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 716             name,
 717             (u_longlong_t)count,
 718             (u_longlong_t)(dspace / count),
 719             (u_longlong_t)(mspace / count));
 720
 721         if (dump_opt['D'] < 3)
 722                 return;
 723
 724         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 725
 726         if (dump_opt['D'] < 4)
 727                 return;
 728
 729         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 730                 return;
 731
 732         (void) printf("%s contents:\n\n", name);
 733
 734         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 735                 dump_dde(ddt, &dde, walk);
 736
 737         ASSERT(error == ENOENT);
 738
 739         (void) printf("\n");
 740 }
 741
 742 static void
 743 dump_all_ddts(spa_t *spa)
 744 {
 745         ddt_histogram_t ddh_total;
 746         ddt_stat_t dds_total;
 747         enum zio_checksum c;
 748         enum ddt_type type;
 749         enum ddt_class class;
 750
 751         bzero(&ddh_total, sizeof (ddt_histogram_t));
 752         bzero(&dds_total, sizeof (ddt_stat_t));
 753
 754         for (c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 755                 ddt_t *ddt = spa->spa_ddt[c];
 756                 for (type = 0; type < DDT_TYPES; type++) {
 757                         for (class = 0; class < DDT_CLASSES;
 758                             class++) {
 759                                 dump_ddt(ddt, type, class);
 760                         }
 761                 }
 762         }
 763
 764         ddt_get_dedup_stats(spa, &dds_total);
 765
 766         if (dds_total.dds_blocks == 0) {
 767                 (void) printf("All DDTs are empty\n");
 768                 return;
 769         }
 770
 771         (void) printf("\n");
 772
 773         if (dump_opt['D'] > 1) {
 774                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
 775                 ddt_get_dedup_histogram(spa, &ddh_total);
 776                 zpool_dump_ddt(&dds_total, &ddh_total);
 777         }
 778
 779         dump_dedup_ratio(&dds_total);
 780 }
 781
 782 static void
 783 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 784 {
 785         char *prefix = (void *)sm;
 786
 787         (void) printf("%s [%llu,%llu) length %llu\n",
 788             prefix,
 789             (u_longlong_t)start,
 790             (u_longlong_t)(start + size),
 791             (u_longlong_t)(size));
 792 }
 793
 794 static void
 795 dump_dtl(vdev_t *vd, int indent)
 796 {
 797         spa_t *spa = vd->vdev_spa;
 798         boolean_t required;
 799         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 800         char prefix[256];
 801         int c, t;
 802
 803         spa_vdev_state_enter(spa, SCL_NONE);
 804         required = vdev_dtl_required(vd);
 805         (void) spa_vdev_state_exit(spa, NULL, 0);
 806
 807         if (indent == 0)
 808                 (void) printf("\nDirty time logs:\n\n");
 809
 810         (void) printf("\t%*s%s [%s]\n", indent, "",
 811             vd->vdev_path ? vd->vdev_path :
 812             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 813             required ? "DTL-required" : "DTL-expendable");
 814
 815         for (t = 0; t < DTL_TYPES; t++) {
 816                 space_map_t *sm = &vd->vdev_dtl[t];
 817                 if (sm->sm_space == 0)
 818                         continue;
 819                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 820                     indent + 2, "", name[t]);
 821                 mutex_enter(sm->sm_lock);
 822                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 823                 mutex_exit(sm->sm_lock);
 824                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 825                         dump_spacemap(spa->spa_meta_objset,
 826                             &vd->vdev_dtl_smo, sm);
 827         }
 828
 829         for (c = 0; c < vd->vdev_children; c++)
 830                 dump_dtl(vd->vdev_child[c], indent + 4);
 831 }
 832
 833 static void
 834 dump_history(spa_t *spa)
 835 {
 836         nvlist_t **events = NULL;
 837         char buf[SPA_MAXBLOCKSIZE];
 838         uint64_t resid, len, off = 0;
 839         uint_t num = 0;
 840         int error;
 841         time_t tsec;
 842         struct tm t;
 843         char tbuf[30];
 844         char internalstr[MAXPATHLEN];
 845         int i;
 846
 847         do {
 848                 len = sizeof (buf);
 849
 850                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
 851                         (void) fprintf(stderr, "Unable to read history: "
 852                             "error %d\n", error);
 853                         return;
 854                 }
 855
 856                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
 857                         break;
 858
 859                 off -= resid;
 860         } while (len != 0);
 861
 862         (void) printf("\nHistory:\n");
 863         for (i = 0; i < num; i++) {
 864                 uint64_t time, txg, ievent;
 865                 char *cmd, *intstr;
 866
 867                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 868                     &time) != 0)
 869                         continue;
 870                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 871                     &cmd) != 0) {
 872                         if (nvlist_lookup_uint64(events[i],
 873                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
 874                                 continue;
 875                         verify(nvlist_lookup_uint64(events[i],
 876                             ZPOOL_HIST_TXG, &txg) == 0);
 877                         verify(nvlist_lookup_string(events[i],
 878                             ZPOOL_HIST_INT_STR, &intstr) == 0);
 879                         if (ievent >= LOG_END)
 880                                 continue;
 881
 882                         (void) snprintf(internalstr,
 883                             sizeof (internalstr),
 884                             "[internal %s txg:%lld] %s",
 885                             zfs_history_event_names[ievent],
 886                             (longlong_t)txg, intstr);
 887                         cmd = internalstr;
 888                 }
 889                 tsec = time;
 890                 (void) localtime_r(&tsec, &t);
 891                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
 892                 (void) printf("%s %s\n", tbuf, cmd);
 893         }
 894 }
 895
 896 /*ARGSUSED*/
 897 static void
 898 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 899 {
 900 }
 901
 902 static uint64_t
 903 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
 904 {
 905         if (dnp == NULL) {
 906                 ASSERT(zb->zb_level < 0);
 907                 if (zb->zb_object == 0)
 908                         return (zb->zb_blkid);
 909                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
 910         }
 911
 912         ASSERT(zb->zb_level >= 0);
 913
 914         return ((zb->zb_blkid <<
 915             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 916             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 917 }
 918
 919 static void
 920 sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
 921 {
 922         const dva_t *dva = bp->blk_dva;
 923         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
 924         int i;
 925
 926         if (dump_opt['b'] >= 5) {
 927                 sprintf_blkptr(blkbuf, bp);
 928                 return;
 929         }
 930
 931         blkbuf[0] = '\0';
 932
 933         for (i = 0; i < ndvas; i++)
 934                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 935                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 936                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 937                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 938
 939         (void) sprintf(blkbuf + strlen(blkbuf),
 940             "%llxL/%llxP F=%llu B=%llu/%llu",
 941             (u_longlong_t)BP_GET_LSIZE(bp),
 942             (u_longlong_t)BP_GET_PSIZE(bp),
 943             (u_longlong_t)bp->blk_fill,
 944             (u_longlong_t)bp->blk_birth,
 945             (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
 946 }
 947
 948 static void
 949 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 950     const dnode_phys_t *dnp)
 951 {
 952         char blkbuf[BP_SPRINTF_LEN];
 953         int l;
 954
 955         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 956         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 957
 958         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
 959
 960         ASSERT(zb->zb_level >= 0);
 961
 962         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 963                 if (l == zb->zb_level) {
 964                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 965                 } else {
 966                         (void) printf(" ");
 967                 }
 968         }
 969
 970         sprintf_blkptr_compact(blkbuf, bp);
 971         (void) printf("%s\n", blkbuf);
 972 }
 973
 974 static int
 975 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 976     blkptr_t *bp, const zbookmark_t *zb)
 977 {
 978         int err = 0;
 979
 980         if (bp->blk_birth == 0)
 981                 return (0);
 982
 983         print_indirect(bp, zb, dnp);
 984
 985         if (BP_GET_LEVEL(bp) > 0) {
 986                 uint32_t flags = ARC_WAIT;
 987                 int i;
 988                 blkptr_t *cbp;
 989                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
 990                 arc_buf_t *buf;
 991                 uint64_t fill = 0;
 992
 993                 err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
 994                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
 995                 if (err)
 996                         return (err);
 997                 ASSERT(buf->b_data);
 998
 999                 /* recursively visit blocks below this */
1000                 cbp = buf->b_data;
1001                 for (i = 0; i < epb; i++, cbp++) {
1002                         zbookmark_t czb;
1003
1004                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1005                             zb->zb_level - 1,
1006                             zb->zb_blkid * epb + i);
1007                         err = visit_indirect(spa, dnp, cbp, &czb);
1008                         if (err)
1009                                 break;
1010                         fill += cbp->blk_fill;
1011                 }
1012                 if (!err)
1013                         ASSERT3U(fill, ==, bp->blk_fill);
1014                 (void) arc_buf_remove_ref(buf, &buf);
1015         }
1016
1017         return (err);
1018 }
1019
1020 /*ARGSUSED*/
1021 static void
1022 dump_indirect(dnode_t *dn)
1023 {
1024         dnode_phys_t *dnp = dn->dn_phys;
1025         int j;
1026         zbookmark_t czb;
1027
1028         (void) printf("Indirect blocks:\n");
1029
1030         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1031             dn->dn_object, dnp->dn_nlevels - 1, 0);
1032         for (j = 0; j < dnp->dn_nblkptr; j++) {
1033                 czb.zb_blkid = j;
1034                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1035                     &dnp->dn_blkptr[j], &czb);
1036         }
1037
1038         (void) printf("\n");
1039 }
1040
1041 /*ARGSUSED*/
1042 static void
1043 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1044 {
1045         dsl_dir_phys_t *dd = data;
1046         time_t crtime;
1047         char nice[32];
1048
1049         if (dd == NULL)
1050                 return;
1051
1052         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1053
1054         crtime = dd->dd_creation_time;
1055         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1056         (void) printf("\t\thead_dataset_obj = %llu\n",
1057             (u_longlong_t)dd->dd_head_dataset_obj);
1058         (void) printf("\t\tparent_dir_obj = %llu\n",
1059             (u_longlong_t)dd->dd_parent_obj);
1060         (void) printf("\t\torigin_obj = %llu\n",
1061             (u_longlong_t)dd->dd_origin_obj);
1062         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1063             (u_longlong_t)dd->dd_child_dir_zapobj);
1064         zdb_nicenum(dd->dd_used_bytes, nice);
1065         (void) printf("\t\tused_bytes = %s\n", nice);
1066         zdb_nicenum(dd->dd_compressed_bytes, nice);
1067         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1068         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1069         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1070         zdb_nicenum(dd->dd_quota, nice);
1071         (void) printf("\t\tquota = %s\n", nice);
1072         zdb_nicenum(dd->dd_reserved, nice);
1073         (void) printf("\t\treserved = %s\n", nice);
1074         (void) printf("\t\tprops_zapobj = %llu\n",
1075             (u_longlong_t)dd->dd_props_zapobj);
1076         (void) printf("\t\tdeleg_zapobj = %llu\n",
1077             (u_longlong_t)dd->dd_deleg_zapobj);
1078         (void) printf("\t\tflags = %llx\n",
1079             (u_longlong_t)dd->dd_flags);
1080
1081 #define DO(which) \
1082         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1083         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1084         DO(HEAD);
1085         DO(SNAP);
1086         DO(CHILD);
1087         DO(CHILD_RSRV);
1088         DO(REFRSRV);
1089 #undef DO
1090 }
1091
1092 /*ARGSUSED*/
1093 static void
1094 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1095 {
1096         dsl_dataset_phys_t *ds = data;
1097         time_t crtime;
1098         char used[32], compressed[32], uncompressed[32], unique[32];
1099         char blkbuf[BP_SPRINTF_LEN];
1100
1101         if (ds == NULL)
1102                 return;
1103
1104         ASSERT(size == sizeof (*ds));
1105         crtime = ds->ds_creation_time;
1106         zdb_nicenum(ds->ds_referenced_bytes, used);
1107         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1108         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1109         zdb_nicenum(ds->ds_unique_bytes, unique);
1110         sprintf_blkptr(blkbuf, &ds->ds_bp);
1111
1112         (void) printf("\t\tdir_obj = %llu\n",
1113             (u_longlong_t)ds->ds_dir_obj);
1114         (void) printf("\t\tprev_snap_obj = %llu\n",
1115             (u_longlong_t)ds->ds_prev_snap_obj);
1116         (void) printf("\t\tprev_snap_txg = %llu\n",
1117             (u_longlong_t)ds->ds_prev_snap_txg);
1118         (void) printf("\t\tnext_snap_obj = %llu\n",
1119             (u_longlong_t)ds->ds_next_snap_obj);
1120         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1121             (u_longlong_t)ds->ds_snapnames_zapobj);
1122         (void) printf("\t\tnum_children = %llu\n",
1123             (u_longlong_t)ds->ds_num_children);
1124         (void) printf("\t\tuserrefs_obj = %llu\n",
1125             (u_longlong_t)ds->ds_userrefs_obj);
1126         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1127         (void) printf("\t\tcreation_txg = %llu\n",
1128             (u_longlong_t)ds->ds_creation_txg);
1129         (void) printf("\t\tdeadlist_obj = %llu\n",
1130             (u_longlong_t)ds->ds_deadlist_obj);
1131         (void) printf("\t\tused_bytes = %s\n", used);
1132         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1133         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1134         (void) printf("\t\tunique = %s\n", unique);
1135         (void) printf("\t\tfsid_guid = %llu\n",
1136             (u_longlong_t)ds->ds_fsid_guid);
1137         (void) printf("\t\tguid = %llu\n",
1138             (u_longlong_t)ds->ds_guid);
1139         (void) printf("\t\tflags = %llx\n",
1140             (u_longlong_t)ds->ds_flags);
1141         (void) printf("\t\tnext_clones_obj = %llu\n",
1142             (u_longlong_t)ds->ds_next_clones_obj);
1143         (void) printf("\t\tprops_obj = %llu\n",
1144             (u_longlong_t)ds->ds_props_obj);
1145         (void) printf("\t\tbp = %s\n", blkbuf);
1146 }
1147
1148 /* ARGSUSED */
1149 static int
1150 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1151 {
1152         char blkbuf[BP_SPRINTF_LEN];
1153
1154         if (bp->blk_birth != 0) {
1155                 sprintf_blkptr(blkbuf, bp);
1156                 (void) printf("\t%s\n", blkbuf);
1157         }
1158         return (0);
1159 }
1160
1161 static void
1162 dump_bptree(objset_t *os, uint64_t obj, char *name)
1163 {
1164         char bytes[32];
1165         bptree_phys_t *bt;
1166         dmu_buf_t *db;
1167
1168         if (dump_opt['d'] < 3)
1169                 return;
1170
1171         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1172         bt = db->db_data;
1173         zdb_nicenum(bt->bt_bytes, bytes);
1174         (void) printf("\n    %s: %llu datasets, %s\n",
1175             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1176         dmu_buf_rele(db, FTAG);
1177
1178         if (dump_opt['d'] < 5)
1179                 return;
1180
1181         (void) printf("\n");
1182
1183         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1184 }
1185
1186 /* ARGSUSED */
1187 static int
1188 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1189 {
1190         char blkbuf[BP_SPRINTF_LEN];
1191
1192         ASSERT(bp->blk_birth != 0);
1193         sprintf_blkptr_compact(blkbuf, bp);
1194         (void) printf("\t%s\n", blkbuf);
1195         return (0);
1196 }
1197
1198 static void
1199 dump_bpobj(bpobj_t *bpo, char *name)
1200 {
1201         char bytes[32];
1202         char comp[32];
1203         char uncomp[32];
1204
1205         if (dump_opt['d'] < 3)
1206                 return;
1207
1208         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1209         if (bpo->bpo_havesubobj) {
1210                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1211                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1212                 (void) printf("\n    %s: %llu local blkptrs, %llu subobjs, "
1213                     "%s (%s/%s comp)\n",
1214                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1215                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1216                     bytes, comp, uncomp);
1217         } else {
1218                 (void) printf("\n    %s: %llu blkptrs, %s\n",
1219                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, bytes);
1220         }
1221
1222         if (dump_opt['d'] < 5)
1223                 return;
1224
1225         (void) printf("\n");
1226
1227         (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1228 }
1229
1230 static void
1231 dump_deadlist(dsl_deadlist_t *dl)
1232 {
1233         dsl_deadlist_entry_t *dle;
1234         char bytes[32];
1235         char comp[32];
1236         char uncomp[32];
1237
1238         if (dump_opt['d'] < 3)
1239                 return;
1240
1241         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1242         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1243         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1244         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1245             bytes, comp, uncomp);
1246
1247         if (dump_opt['d'] < 4)
1248                 return;
1249
1250         (void) printf("\n");
1251
1252         for (dle = avl_first(&dl->dl_tree); dle;
1253             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1254                 (void) printf("      mintxg %llu -> obj %llu\n",
1255                     (longlong_t)dle->dle_mintxg,
1256                     (longlong_t)dle->dle_bpobj.bpo_object);
1257
1258                 if (dump_opt['d'] >= 5)
1259                         dump_bpobj(&dle->dle_bpobj, "");
1260         }
1261 }
1262
1263 static avl_tree_t idx_tree;
1264 static avl_tree_t domain_tree;
1265 static boolean_t fuid_table_loaded;
1266 static boolean_t sa_loaded;
1267 sa_attr_type_t *sa_attr_table;
1268
1269 static void
1270 fuid_table_destroy(void)
1271 {
1272         if (fuid_table_loaded) {
1273                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1274                 fuid_table_loaded = B_FALSE;
1275         }
1276 }
1277
1278 /*
1279  * print uid or gid information.
1280  * For normal POSIX id just the id is printed in decimal format.
1281  * For CIFS files with FUID the fuid is printed in hex followed by
1282  * the doman-rid string.
1283  */
1284 static void
1285 print_idstr(uint64_t id, const char *id_type)
1286 {
1287         if (FUID_INDEX(id)) {
1288                 char *domain;
1289
1290                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1291                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1292                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1293         } else {
1294                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1295         }
1296
1297 }
1298
1299 static void
1300 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1301 {
1302         uint32_t uid_idx, gid_idx;
1303
1304         uid_idx = FUID_INDEX(uid);
1305         gid_idx = FUID_INDEX(gid);
1306
1307         /* Load domain table, if not already loaded */
1308         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1309                 uint64_t fuid_obj;
1310
1311                 /* first find the fuid object.  It lives in the master node */
1312                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1313                     8, 1, &fuid_obj) == 0);
1314                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1315                 (void) zfs_fuid_table_load(os, fuid_obj,
1316                     &idx_tree, &domain_tree);
1317                 fuid_table_loaded = B_TRUE;
1318         }
1319
1320         print_idstr(uid, "uid");
1321         print_idstr(gid, "gid");
1322 }
1323
1324 /*ARGSUSED*/
1325 static void
1326 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1327 {
1328         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1329         sa_handle_t *hdl;
1330         uint64_t xattr, rdev, gen;
1331         uint64_t uid, gid, mode, fsize, parent, links;
1332         uint64_t pflags;
1333         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1334         time_t z_crtime, z_atime, z_mtime, z_ctime;
1335         sa_bulk_attr_t bulk[12];
1336         int idx = 0;
1337         int error;
1338
1339         if (!sa_loaded) {
1340                 uint64_t sa_attrs = 0;
1341                 uint64_t version;
1342
1343                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1344                     8, 1, &version) == 0);
1345                 if (version >= ZPL_VERSION_SA) {
1346                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1347                             8, 1, &sa_attrs) == 0);
1348                 }
1349                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1350                     ZPL_END, &sa_attr_table)) != 0) {
1351                         (void) printf("sa_setup failed errno %d, can't "
1352                             "display znode contents\n", error);
1353                         return;
1354                 }
1355                 sa_loaded = B_TRUE;
1356         }
1357
1358         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1359                 (void) printf("Failed to get handle for SA znode\n");
1360                 return;
1361         }
1362
1363         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1364         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1365         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1366             &links, 8);
1367         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1368         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1369             &mode, 8);
1370         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1371             NULL, &parent, 8);
1372         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1373             &fsize, 8);
1374         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1375             acctm, 16);
1376         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1377             modtm, 16);
1378         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1379             crtm, 16);
1380         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1381             chgtm, 16);
1382         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1383             &pflags, 8);
1384
1385         if (sa_bulk_lookup(hdl, bulk, idx)) {
1386                 (void) sa_handle_destroy(hdl);
1387                 return;
1388         }
1389
1390         error = zfs_obj_to_path(os, object, path, sizeof (path));
1391         if (error != 0) {
1392                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1393                     (u_longlong_t)object);
1394         }
1395         if (dump_opt['d'] < 3) {
1396                 (void) printf("\t%s\n", path);
1397                 (void) sa_handle_destroy(hdl);
1398                 return;
1399         }
1400
1401         z_crtime = (time_t)crtm[0];
1402         z_atime = (time_t)acctm[0];
1403         z_mtime = (time_t)modtm[0];
1404         z_ctime = (time_t)chgtm[0];
1405
1406         (void) printf("\tpath   %s\n", path);
1407         dump_uidgid(os, uid, gid);
1408         (void) printf("\tatime  %s", ctime(&z_atime));
1409         (void) printf("\tmtime  %s", ctime(&z_mtime));
1410         (void) printf("\tctime  %s", ctime(&z_ctime));
1411         (void) printf("\tcrtime %s", ctime(&z_crtime));
1412         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1413         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1414         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1415         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1416         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1417         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1418         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1419             sizeof (uint64_t)) == 0)
1420                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1421         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1422             sizeof (uint64_t)) == 0)
1423                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1424         sa_handle_destroy(hdl);
1425 }
1426
1427 /*ARGSUSED*/
1428 static void
1429 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1430 {
1431 }
1432
1433 /*ARGSUSED*/
1434 static void
1435 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1436 {
1437 }
1438
1439 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1440         dump_none,              /* unallocated                  */
1441         dump_zap,               /* object directory             */
1442         dump_uint64,            /* object array                 */
1443         dump_none,              /* packed nvlist                */
1444         dump_packed_nvlist,     /* packed nvlist size           */
1445         dump_none,              /* bplist                       */
1446         dump_none,              /* bplist header                */
1447         dump_none,              /* SPA space map header         */
1448         dump_none,              /* SPA space map                */
1449         dump_none,              /* ZIL intent log               */
1450         dump_dnode,             /* DMU dnode                    */
1451         dump_dmu_objset,        /* DMU objset                   */
1452         dump_dsl_dir,           /* DSL directory                */
1453         dump_zap,               /* DSL directory child map      */
1454         dump_zap,               /* DSL dataset snap map         */
1455         dump_zap,               /* DSL props                    */
1456         dump_dsl_dataset,       /* DSL dataset                  */
1457         dump_znode,             /* ZFS znode                    */
1458         dump_acl,               /* ZFS V0 ACL                   */
1459         dump_uint8,             /* ZFS plain file               */
1460         dump_zpldir,            /* ZFS directory                */
1461         dump_zap,               /* ZFS master node              */
1462         dump_zap,               /* ZFS delete queue             */
1463         dump_uint8,             /* zvol object                  */
1464         dump_zap,               /* zvol prop                    */
1465         dump_uint8,             /* other uint8[]                */
1466         dump_uint64,            /* other uint64[]               */
1467         dump_zap,               /* other ZAP                    */
1468         dump_zap,               /* persistent error log         */
1469         dump_uint8,             /* SPA history                  */
1470         dump_uint64,            /* SPA history offsets          */
1471         dump_zap,               /* Pool properties              */
1472         dump_zap,               /* DSL permissions              */
1473         dump_acl,               /* ZFS ACL                      */
1474         dump_uint8,             /* ZFS SYSACL                   */
1475         dump_none,              /* FUID nvlist                  */
1476         dump_packed_nvlist,     /* FUID nvlist size             */
1477         dump_zap,               /* DSL dataset next clones      */
1478         dump_zap,               /* DSL scrub queue              */
1479         dump_zap,               /* ZFS user/group used          */
1480         dump_zap,               /* ZFS user/group quota         */
1481         dump_zap,               /* snapshot refcount tags       */
1482         dump_ddt_zap,           /* DDT ZAP object               */
1483         dump_zap,               /* DDT statistics               */
1484         dump_znode,             /* SA object                    */
1485         dump_zap,               /* SA Master Node               */
1486         dump_sa_attrs,          /* SA attribute registration    */
1487         dump_sa_layouts,        /* SA attribute layouts         */
1488         dump_zap,               /* DSL scrub translations       */
1489         dump_none,              /* fake dedup BP                */
1490         dump_zap,               /* deadlist                     */
1491         dump_none,              /* deadlist hdr                 */
1492         dump_zap,               /* dsl clones                   */
1493         dump_none,              /* bpobj subobjs                */
1494         dump_unknown,           /* Unknown type, must be last   */
1495 };
1496
1497 static void
1498 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1499 {
1500         dmu_buf_t *db = NULL;
1501         dmu_object_info_t doi;
1502         dnode_t *dn;
1503         void *bonus = NULL;
1504         size_t bsize = 0;
1505         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1506         char bonus_size[32];
1507         char aux[50];
1508         int error;
1509
1510         if (*print_header) {
1511                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1512                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1513                     "%full", "type");
1514                 *print_header = 0;
1515         }
1516
1517         if (object == 0) {
1518                 dn = DMU_META_DNODE(os);
1519         } else {
1520                 error = dmu_bonus_hold(os, object, FTAG, &db);
1521                 if (error)
1522                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1523                             object, error);
1524                 bonus = db->db_data;
1525                 bsize = db->db_size;
1526                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1527         }
1528         dmu_object_info_from_dnode(dn, &doi);
1529
1530         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1531         zdb_nicenum(doi.doi_data_block_size, dblk);
1532         zdb_nicenum(doi.doi_max_offset, lsize);
1533         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1534         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1535         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1536             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1537             doi.doi_max_offset);
1538
1539         aux[0] = '\0';
1540
1541         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1542                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1543                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1544         }
1545
1546         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1547                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1548                     ZDB_COMPRESS_NAME(doi.doi_compress));
1549         }
1550
1551         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1552             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1553             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1554
1555         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1556                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1557                     "", "", "", "", "", bonus_size, "bonus",
1558                     ZDB_OT_NAME(doi.doi_bonus_type));
1559         }
1560
1561         if (verbosity >= 4) {
1562                 (void) printf("\tdnode flags: %s%s%s\n",
1563                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1564                     "USED_BYTES " : "",
1565                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1566                     "USERUSED_ACCOUNTED " : "",
1567                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1568                     "SPILL_BLKPTR" : "");
1569                 (void) printf("\tdnode maxblkid: %llu\n",
1570                     (longlong_t)dn->dn_phys->dn_maxblkid);
1571
1572                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1573                     bonus, bsize);
1574                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1575                 *print_header = 1;
1576         }
1577
1578         if (verbosity >= 5)
1579                 dump_indirect(dn);
1580
1581         if (verbosity >= 5) {
1582                 /*
1583                  * Report the list of segments that comprise the object.
1584                  */
1585                 uint64_t start = 0;
1586                 uint64_t end;
1587                 uint64_t blkfill = 1;
1588                 int minlvl = 1;
1589
1590                 if (dn->dn_type == DMU_OT_DNODE) {
1591                         minlvl = 0;
1592                         blkfill = DNODES_PER_BLOCK;
1593                 }
1594
1595                 for (;;) {
1596                         char segsize[32];
1597                         error = dnode_next_offset(dn,
1598                             0, &start, minlvl, blkfill, 0);
1599                         if (error)
1600                                 break;
1601                         end = start;
1602                         error = dnode_next_offset(dn,
1603                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1604                         zdb_nicenum(end - start, segsize);
1605                         (void) printf("\t\tsegment [%016llx, %016llx)"
1606                             " size %5s\n", (u_longlong_t)start,
1607                             (u_longlong_t)end, segsize);
1608                         if (error)
1609                                 break;
1610                         start = end;
1611                 }
1612         }
1613
1614         if (db != NULL)
1615                 dmu_buf_rele(db, FTAG);
1616 }
1617
1618 static char *objset_types[DMU_OST_NUMTYPES] = {
1619         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1620
1621 static void
1622 dump_dir(objset_t *os)
1623 {
1624         dmu_objset_stats_t dds;
1625         uint64_t object, object_count;
1626         uint64_t refdbytes, usedobjs, scratch;
1627         char numbuf[32];
1628         char blkbuf[BP_SPRINTF_LEN + 20];
1629         char osname[MAXNAMELEN];
1630         char *type = "UNKNOWN";
1631         int verbosity = dump_opt['d'];
1632         int print_header = 1;
1633         int i, error;
1634
1635         dmu_objset_fast_stat(os, &dds);
1636
1637         if (dds.dds_type < DMU_OST_NUMTYPES)
1638                 type = objset_types[dds.dds_type];
1639
1640         if (dds.dds_type == DMU_OST_META) {
1641                 dds.dds_creation_txg = TXG_INITIAL;
1642                 usedobjs = os->os_rootbp->blk_fill;
1643                 refdbytes = os->os_spa->spa_dsl_pool->
1644                     dp_mos_dir->dd_phys->dd_used_bytes;
1645         } else {
1646                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1647         }
1648
1649         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1650
1651         zdb_nicenum(refdbytes, numbuf);
1652
1653         if (verbosity >= 4) {
1654                 (void) sprintf(blkbuf, ", rootbp ");
1655                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1656         } else {
1657                 blkbuf[0] = '\0';
1658         }
1659
1660         dmu_objset_name(os, osname);
1661
1662         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1663             "%s, %llu objects%s\n",
1664             osname, type, (u_longlong_t)dmu_objset_id(os),
1665             (u_longlong_t)dds.dds_creation_txg,
1666             numbuf, (u_longlong_t)usedobjs, blkbuf);
1667
1668         if (zopt_objects != 0) {
1669                 for (i = 0; i < zopt_objects; i++)
1670                         dump_object(os, zopt_object[i], verbosity,
1671                             &print_header);
1672                 (void) printf("\n");
1673                 return;
1674         }
1675
1676         if (dump_opt['i'] != 0 || verbosity >= 2)
1677                 dump_intent_log(dmu_objset_zil(os));
1678
1679         if (dmu_objset_ds(os) != NULL)
1680                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1681
1682         if (verbosity < 2)
1683                 return;
1684
1685         if (os->os_rootbp->blk_birth == 0)
1686                 return;
1687
1688         dump_object(os, 0, verbosity, &print_header);
1689         object_count = 0;
1690         if (DMU_USERUSED_DNODE(os) != NULL &&
1691             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1692                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1693                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1694         }
1695
1696         object = 0;
1697         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1698                 dump_object(os, object, verbosity, &print_header);
1699                 object_count++;
1700         }
1701
1702         ASSERT3U(object_count, ==, usedobjs);
1703
1704         (void) printf("\n");
1705
1706         if (error != ESRCH) {
1707                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1708                 abort();
1709         }
1710 }
1711
1712 static void
1713 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1714 {
1715         time_t timestamp = ub->ub_timestamp;
1716
1717         (void) printf("%s", header ? header : "");
1718         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1719         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1720         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1721         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1722         (void) printf("\ttimestamp = %llu UTC = %s",
1723             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1724         if (dump_opt['u'] >= 3) {
1725                 char blkbuf[BP_SPRINTF_LEN];
1726                 sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1727                 (void) printf("\trootbp = %s\n", blkbuf);
1728         }
1729         (void) printf("%s", footer ? footer : "");
1730 }
1731
1732 static void
1733 dump_config(spa_t *spa)
1734 {
1735         dmu_buf_t *db;
1736         size_t nvsize = 0;
1737         int error = 0;
1738
1739
1740         error = dmu_bonus_hold(spa->spa_meta_objset,
1741             spa->spa_config_object, FTAG, &db);
1742
1743         if (error == 0) {
1744                 nvsize = *(uint64_t *)db->db_data;
1745                 dmu_buf_rele(db, FTAG);
1746
1747                 (void) printf("\nMOS Configuration:\n");
1748                 dump_packed_nvlist(spa->spa_meta_objset,
1749                     spa->spa_config_object, (void *)&nvsize, 1);
1750         } else {
1751                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1752                     (u_longlong_t)spa->spa_config_object, error);
1753         }
1754 }
1755
1756 static void
1757 dump_cachefile(const char *cachefile)
1758 {
1759         int fd;
1760         struct stat64 statbuf;
1761         char *buf;
1762         nvlist_t *config;
1763
1764         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1765                 (void) printf("cannot open '%s': %s\n", cachefile,
1766                     strerror(errno));
1767                 exit(1);
1768         }
1769
1770         if (fstat64(fd, &statbuf) != 0) {
1771                 (void) printf("failed to stat '%s': %s\n", cachefile,
1772                     strerror(errno));
1773                 exit(1);
1774         }
1775
1776         if ((buf = malloc(statbuf.st_size)) == NULL) {
1777                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1778                     (u_longlong_t)statbuf.st_size);
1779                 exit(1);
1780         }
1781
1782         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1783                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1784                     (u_longlong_t)statbuf.st_size);
1785                 exit(1);
1786         }
1787
1788         (void) close(fd);
1789
1790         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1791                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1792                 exit(1);
1793         }
1794
1795         free(buf);
1796
1797         dump_nvlist(config, 0);
1798
1799         nvlist_free(config);
1800 }
1801
1802 #define ZDB_MAX_UB_HEADER_SIZE 32
1803
1804 static void
1805 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1806 {
1807         vdev_t vd;
1808         vdev_t *vdp = &vd;
1809         char header[ZDB_MAX_UB_HEADER_SIZE];
1810         int i;
1811
1812         vd.vdev_ashift = ashift;
1813         vdp->vdev_top = vdp;
1814
1815         for (i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1816                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1817                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1818
1819                 if (uberblock_verify(ub))
1820                         continue;
1821                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1822                     "Uberblock[%d]\n", i);
1823                 dump_uberblock(ub, header, "");
1824         }
1825 }
1826
1827 static void
1828 dump_label(const char *dev)
1829 {
1830         int fd;
1831         vdev_label_t label;
1832         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1833         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1834         struct stat64 statbuf;
1835         uint64_t psize, ashift;
1836         int len = strlen(dev) + 1;
1837         int l;
1838
1839         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1840                 len++;
1841                 path = malloc(len);
1842                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1843         } else {
1844                 path = strdup(dev);
1845         }
1846
1847         if ((fd = open64(path, O_RDONLY)) < 0) {
1848                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
1849                 free(path);
1850                 exit(1);
1851         }
1852
1853         if (fstat64_blk(fd, &statbuf) != 0) {
1854                 (void) printf("failed to stat '%s': %s\n", path,
1855                     strerror(errno));
1856                 free(path);
1857                 (void) close(fd);
1858                 exit(1);
1859         }
1860
1861         psize = statbuf.st_size;
1862         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1863
1864         for (l = 0; l < VDEV_LABELS; l++) {
1865                 nvlist_t *config = NULL;
1866
1867                 (void) printf("--------------------------------------------\n");
1868                 (void) printf("LABEL %d\n", l);
1869                 (void) printf("--------------------------------------------\n");
1870
1871                 if (pread64(fd, &label, sizeof (label),
1872                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1873                         (void) printf("failed to read label %d\n", l);
1874                         continue;
1875                 }
1876
1877                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1878                         (void) printf("failed to unpack label %d\n", l);
1879                         ashift = SPA_MINBLOCKSHIFT;
1880                 } else {
1881                         nvlist_t *vdev_tree = NULL;
1882
1883                         dump_nvlist(config, 4);
1884                         if ((nvlist_lookup_nvlist(config,
1885                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1886                             (nvlist_lookup_uint64(vdev_tree,
1887                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1888                                 ashift = SPA_MINBLOCKSHIFT;
1889                         nvlist_free(config);
1890                 }
1891                 if (dump_opt['u'])
1892                         dump_label_uberblocks(&label, ashift);
1893         }
1894
1895         free(path);
1896         (void) close(fd);
1897 }
1898
1899 /*ARGSUSED*/
1900 static int
1901 dump_one_dir(const char *dsname, void *arg)
1902 {
1903         int error;
1904         objset_t *os;
1905
1906         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1907         if (error) {
1908                 (void) printf("Could not open %s, error %d\n", dsname, error);
1909                 return (0);
1910         }
1911         dump_dir(os);
1912         dmu_objset_disown(os, FTAG);
1913         fuid_table_destroy();
1914         sa_loaded = B_FALSE;
1915         return (0);
1916 }
1917
1918 /*
1919  * Block statistics.
1920  */
1921 typedef struct zdb_blkstats {
1922         uint64_t        zb_asize;
1923         uint64_t        zb_lsize;
1924         uint64_t        zb_psize;
1925         uint64_t        zb_count;
1926 } zdb_blkstats_t;
1927
1928 /*
1929  * Extended object types to report deferred frees and dedup auto-ditto blocks.
1930  */
1931 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
1932 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
1933 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
1934 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
1935
1936 static char *zdb_ot_extname[] = {
1937         "deferred free",
1938         "dedup ditto",
1939         "other",
1940         "Total",
1941 };
1942
1943 #define ZB_TOTAL        DN_MAX_LEVELS
1944
1945 typedef struct zdb_cb {
1946         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1947         uint64_t        zcb_dedup_asize;
1948         uint64_t        zcb_dedup_blocks;
1949         uint64_t        zcb_errors[256];
1950         int             zcb_readfails;
1951         int             zcb_haderrors;
1952         spa_t           *zcb_spa;
1953 } zdb_cb_t;
1954
1955 static void
1956 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
1957     dmu_object_type_t type)
1958 {
1959         uint64_t refcnt = 0;
1960         int i;
1961
1962         ASSERT(type < ZDB_OT_TOTAL);
1963
1964         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1965                 return;
1966
1967         for (i = 0; i < 4; i++) {
1968                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1969                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
1970                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1971
1972                 zb->zb_asize += BP_GET_ASIZE(bp);
1973                 zb->zb_lsize += BP_GET_LSIZE(bp);
1974                 zb->zb_psize += BP_GET_PSIZE(bp);
1975                 zb->zb_count++;
1976         }
1977
1978         if (dump_opt['L'])
1979                 return;
1980
1981         if (BP_GET_DEDUP(bp)) {
1982                 ddt_t *ddt;
1983                 ddt_entry_t *dde;
1984
1985                 ddt = ddt_select(zcb->zcb_spa, bp);
1986                 ddt_enter(ddt);
1987                 dde = ddt_lookup(ddt, bp, B_FALSE);
1988
1989                 if (dde == NULL) {
1990                         refcnt = 0;
1991                 } else {
1992                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
1993                         ddt_phys_decref(ddp);
1994                         refcnt = ddp->ddp_refcnt;
1995                         if (ddt_phys_total_refcnt(dde) == 0)
1996                                 ddt_remove(ddt, dde);
1997                 }
1998                 ddt_exit(ddt);
1999         }
2000
2001         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2002             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2003             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2004 }
2005
2006 /* ARGSUSED */
2007 static int
2008 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
2009     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2010 {
2011         zdb_cb_t *zcb = arg;
2012         char blkbuf[BP_SPRINTF_LEN];
2013         dmu_object_type_t type;
2014         boolean_t is_metadata;
2015
2016         if (bp == NULL)
2017                 return (0);
2018
2019         type = BP_GET_TYPE(bp);
2020
2021         zdb_count_block(zcb, zilog, bp,
2022             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2023
2024         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2025
2026         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2027                 int ioerr;
2028                 size_t size = BP_GET_PSIZE(bp);
2029                 void *data = malloc(size);
2030                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2031
2032                 /* If it's an intent log block, failure is expected. */
2033                 if (zb->zb_level == ZB_ZIL_LEVEL)
2034                         flags |= ZIO_FLAG_SPECULATIVE;
2035
2036                 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
2037                     NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2038
2039                 free(data);
2040
2041                 if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) {
2042                         zcb->zcb_haderrors = 1;
2043                         zcb->zcb_errors[ioerr]++;
2044
2045                         if (dump_opt['b'] >= 2)
2046                                 sprintf_blkptr(blkbuf, bp);
2047                         else
2048                                 blkbuf[0] = '\0';
2049
2050                         (void) printf("zdb_blkptr_cb: "
2051                             "Got error %d reading "
2052                             "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2053                             ioerr,
2054                             (u_longlong_t)zb->zb_objset,
2055                             (u_longlong_t)zb->zb_object,
2056                             (u_longlong_t)zb->zb_level,
2057                             (u_longlong_t)zb->zb_blkid,
2058                             blkbuf);
2059                 }
2060         }
2061
2062         zcb->zcb_readfails = 0;
2063
2064         if (dump_opt['b'] >= 4) {
2065                 sprintf_blkptr(blkbuf, bp);
2066                 (void) printf("objset %llu object %llu "
2067                     "level %lld offset 0x%llx %s\n",
2068                     (u_longlong_t)zb->zb_objset,
2069                     (u_longlong_t)zb->zb_object,
2070                     (longlong_t)zb->zb_level,
2071                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2072                     blkbuf);
2073         }
2074
2075         return (0);
2076 }
2077
2078 static void
2079 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2080 {
2081         vdev_t *vd = sm->sm_ppd;
2082
2083         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2084             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2085 }
2086
2087 /* ARGSUSED */
2088 static void
2089 zdb_space_map_load(space_map_t *sm)
2090 {
2091 }
2092
2093 static void
2094 zdb_space_map_unload(space_map_t *sm)
2095 {
2096         space_map_vacate(sm, zdb_leak, sm);
2097 }
2098
2099 /* ARGSUSED */
2100 static void
2101 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2102 {
2103 }
2104
2105 static space_map_ops_t zdb_space_map_ops = {
2106         zdb_space_map_load,
2107         zdb_space_map_unload,
2108         NULL,   /* alloc */
2109         zdb_space_map_claim,
2110         NULL,   /* free */
2111         NULL    /* maxsize */
2112 };
2113
2114 static void
2115 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2116 {
2117         ddt_bookmark_t ddb = { 0 };
2118         ddt_entry_t dde;
2119         int error;
2120         int p;
2121
2122         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2123                 blkptr_t blk;
2124                 ddt_phys_t *ddp = dde.dde_phys;
2125
2126                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2127                         return;
2128
2129                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2130
2131                 for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2132                         if (ddp->ddp_phys_birth == 0)
2133                                 continue;
2134                         ddt_bp_create(ddb.ddb_checksum,
2135                             &dde.dde_key, ddp, &blk);
2136                         if (p == DDT_PHYS_DITTO) {
2137                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2138                         } else {
2139                                 zcb->zcb_dedup_asize +=
2140                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2141                                 zcb->zcb_dedup_blocks++;
2142                         }
2143                 }
2144                 if (!dump_opt['L']) {
2145                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2146                         ddt_enter(ddt);
2147                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2148                         ddt_exit(ddt);
2149                 }
2150         }
2151
2152         ASSERT(error == ENOENT);
2153 }
2154
2155 static void
2156 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2157 {
2158         zcb->zcb_spa = spa;
2159         int c, m;
2160
2161         if (!dump_opt['L']) {
2162                 vdev_t *rvd = spa->spa_root_vdev;
2163                 for (c = 0; c < rvd->vdev_children; c++) {
2164                         vdev_t *vd = rvd->vdev_child[c];
2165                         for (m = 0; m < vd->vdev_ms_count; m++) {
2166                                 metaslab_t *msp = vd->vdev_ms[m];
2167                                 mutex_enter(&msp->ms_lock);
2168                                 space_map_unload(&msp->ms_map);
2169                                 VERIFY(space_map_load(&msp->ms_map,
2170                                     &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2171                                     spa->spa_meta_objset) == 0);
2172                                 msp->ms_map.sm_ppd = vd;
2173                                 mutex_exit(&msp->ms_lock);
2174                         }
2175                 }
2176         }
2177
2178         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2179
2180         zdb_ddt_leak_init(spa, zcb);
2181
2182         spa_config_exit(spa, SCL_CONFIG, FTAG);
2183 }
2184
2185 static void
2186 zdb_leak_fini(spa_t *spa)
2187 {
2188         int c, m;
2189
2190         if (!dump_opt['L']) {
2191                 vdev_t *rvd = spa->spa_root_vdev;
2192                 for (c = 0; c < rvd->vdev_children; c++) {
2193                         vdev_t *vd = rvd->vdev_child[c];
2194                         for (m = 0; m < vd->vdev_ms_count; m++) {
2195                                 metaslab_t *msp = vd->vdev_ms[m];
2196                                 mutex_enter(&msp->ms_lock);
2197                                 space_map_unload(&msp->ms_map);
2198                                 mutex_exit(&msp->ms_lock);
2199                         }
2200                 }
2201         }
2202 }
2203
2204 /* ARGSUSED */
2205 static int
2206 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2207 {
2208         zdb_cb_t *zcb = arg;
2209
2210         if (dump_opt['b'] >= 4) {
2211                 char blkbuf[BP_SPRINTF_LEN];
2212                 sprintf_blkptr(blkbuf, bp);
2213                 (void) printf("[%s] %s\n",
2214                     "deferred free", blkbuf);
2215         }
2216         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2217         return (0);
2218 }
2219
2220 static int
2221 dump_block_stats(spa_t *spa)
2222 {
2223         zdb_cb_t zcb;
2224         zdb_blkstats_t *zb, *tzb;
2225         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2226         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2227         int leaks = 0;
2228         int e;
2229
2230         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
2231             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2232             (dump_opt['c'] == 1) ? "metadata " : "",
2233             dump_opt['c'] ? "checksums " : "",
2234             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2235             !dump_opt['L'] ? "nothing leaked " : "");
2236
2237         /*
2238          * Load all space maps as SM_ALLOC maps, then traverse the pool
2239          * claiming each block we discover.  If the pool is perfectly
2240          * consistent, the space maps will be empty when we're done.
2241          * Anything left over is a leak; any block we can't claim (because
2242          * it's not part of any space map) is a double allocation,
2243          * reference to a freed block, or an unclaimed log block.
2244          */
2245         bzero(&zcb, sizeof(zdb_cb_t));
2246         zdb_leak_init(spa, &zcb);
2247
2248         /*
2249          * If there's a deferred-free bplist, process that first.
2250          */
2251         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2252             count_block_cb, &zcb, NULL);
2253         (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2254             count_block_cb, &zcb, NULL);
2255         if (spa_feature_is_active(spa,
2256             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2257                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2258                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2259                     &zcb, NULL));
2260         }
2261
2262         if (dump_opt['c'] > 1)
2263                 flags |= TRAVERSE_PREFETCH_DATA;
2264
2265         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2266
2267         if (zcb.zcb_haderrors) {
2268                 (void) printf("\nError counts:\n\n");
2269                 (void) printf("\t%5s  %s\n", "errno", "count");
2270                 for (e = 0; e < 256; e++) {
2271                         if (zcb.zcb_errors[e] != 0) {
2272                                 (void) printf("\t%5d  %llu\n",
2273                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2274                         }
2275                 }
2276         }
2277
2278         /*
2279          * Report any leaked segments.
2280          */
2281         zdb_leak_fini(spa);
2282
2283         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2284
2285         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2286         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2287
2288         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2289         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2290
2291         if (total_found == total_alloc) {
2292                 if (!dump_opt['L'])
2293                         (void) printf("\n\tNo leaks (block sum matches space"
2294                             " maps exactly)\n");
2295         } else {
2296                 (void) printf("block traversal size %llu != alloc %llu "
2297                     "(%s %lld)\n",
2298                     (u_longlong_t)total_found,
2299                     (u_longlong_t)total_alloc,
2300                     (dump_opt['L']) ? "unreachable" : "leaked",
2301                     (longlong_t)(total_alloc - total_found));
2302                 leaks = 1;
2303         }
2304
2305         if (tzb->zb_count == 0)
2306                 return (2);
2307
2308         (void) printf("\n");
2309         (void) printf("\tbp count:      %10llu\n",
2310             (u_longlong_t)tzb->zb_count);
2311         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2312             (u_longlong_t)tzb->zb_lsize,
2313             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2314         (void) printf("\tbp physical:   %10llu      avg:"
2315             " %6llu     compression: %6.2f\n",
2316             (u_longlong_t)tzb->zb_psize,
2317             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2318             (double)tzb->zb_lsize / tzb->zb_psize);
2319         (void) printf("\tbp allocated:  %10llu      avg:"
2320             " %6llu     compression: %6.2f\n",
2321             (u_longlong_t)tzb->zb_asize,
2322             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2323             (double)tzb->zb_lsize / tzb->zb_asize);
2324         (void) printf("\tbp deduped:    %10llu    ref>1:"
2325             " %6llu   deduplication: %6.2f\n",
2326             (u_longlong_t)zcb.zcb_dedup_asize,
2327             (u_longlong_t)zcb.zcb_dedup_blocks,
2328             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2329         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2330             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2331
2332         if (dump_opt['b'] >= 2) {
2333                 int l, t, level;
2334                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2335                     "\t  avg\t comp\t%%Total\tType\n");
2336
2337                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2338                         char csize[32], lsize[32], psize[32], asize[32];
2339                         char avg[32];
2340                         char *typename;
2341
2342                         if (t < DMU_OT_NUMTYPES)
2343                                 typename = dmu_ot[t].ot_name;
2344                         else
2345                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2346
2347                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2348                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2349                                     "\t%5s\t%5s\t%6s\t%s\n",
2350                                     "-",
2351                                     "-",
2352                                     "-",
2353                                     "-",
2354                                     "-",
2355                                     "-",
2356                                     "-",
2357                                     typename);
2358                                 continue;
2359                         }
2360
2361                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2362                                 level = (l == -1 ? ZB_TOTAL : l);
2363                                 zb = &zcb.zcb_type[level][t];
2364
2365                                 if (zb->zb_asize == 0)
2366                                         continue;
2367
2368                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2369                                         continue;
2370
2371                                 if (level == 0 && zb->zb_asize ==
2372                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2373                                         continue;
2374
2375                                 zdb_nicenum(zb->zb_count, csize);
2376                                 zdb_nicenum(zb->zb_lsize, lsize);
2377                                 zdb_nicenum(zb->zb_psize, psize);
2378                                 zdb_nicenum(zb->zb_asize, asize);
2379                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2380
2381                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2382                                     "\t%5.2f\t%6.2f\t",
2383                                     csize, lsize, psize, asize, avg,
2384                                     (double)zb->zb_lsize / zb->zb_psize,
2385                                     100.0 * zb->zb_asize / tzb->zb_asize);
2386
2387                                 if (level == ZB_TOTAL)
2388                                         (void) printf("%s\n", typename);
2389                                 else
2390                                         (void) printf("    L%d %s\n",
2391                                             level, typename);
2392                         }
2393                 }
2394         }
2395
2396         (void) printf("\n");
2397
2398         if (leaks)
2399                 return (2);
2400
2401         if (zcb.zcb_haderrors)
2402                 return (3);
2403
2404         return (0);
2405 }
2406
2407 typedef struct zdb_ddt_entry {
2408         ddt_key_t       zdde_key;
2409         uint64_t        zdde_ref_blocks;
2410         uint64_t        zdde_ref_lsize;
2411         uint64_t        zdde_ref_psize;
2412         uint64_t        zdde_ref_dsize;
2413         avl_node_t      zdde_node;
2414 } zdb_ddt_entry_t;
2415
2416 /* ARGSUSED */
2417 static int
2418 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2419     arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2420 {
2421         avl_tree_t *t = arg;
2422         avl_index_t where;
2423         zdb_ddt_entry_t *zdde, zdde_search;
2424
2425         if (bp == NULL)
2426                 return (0);
2427
2428         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2429                 (void) printf("traversing objset %llu, %llu objects, "
2430                     "%lu blocks so far\n",
2431                     (u_longlong_t)zb->zb_objset,
2432                     (u_longlong_t)bp->blk_fill,
2433                     avl_numnodes(t));
2434         }
2435
2436         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2437             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2438                 return (0);
2439
2440         ddt_key_fill(&zdde_search.zdde_key, bp);
2441
2442         zdde = avl_find(t, &zdde_search, &where);
2443
2444         if (zdde == NULL) {
2445                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2446                 zdde->zdde_key = zdde_search.zdde_key;
2447                 avl_insert(t, zdde, where);
2448         }
2449
2450         zdde->zdde_ref_blocks += 1;
2451         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2452         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2453         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2454
2455         return (0);
2456 }
2457
2458 static void
2459 dump_simulated_ddt(spa_t *spa)
2460 {
2461         avl_tree_t t;
2462         void *cookie = NULL;
2463         zdb_ddt_entry_t *zdde;
2464         ddt_histogram_t ddh_total;
2465         ddt_stat_t dds_total;
2466
2467         bzero(&ddh_total, sizeof (ddt_histogram_t));
2468         bzero(&dds_total, sizeof (ddt_stat_t));
2469
2470         avl_create(&t, ddt_entry_compare,
2471             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2472
2473         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2474
2475         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2476             zdb_ddt_add_cb, &t);
2477
2478         spa_config_exit(spa, SCL_CONFIG, FTAG);
2479
2480         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2481                 ddt_stat_t dds;
2482                 uint64_t refcnt = zdde->zdde_ref_blocks;
2483                 ASSERT(refcnt != 0);
2484
2485                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2486                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2487                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2488                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2489
2490                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2491                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2492                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2493                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2494
2495                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2496
2497                 umem_free(zdde, sizeof (*zdde));
2498         }
2499
2500         avl_destroy(&t);
2501
2502         ddt_histogram_stat(&dds_total, &ddh_total);
2503
2504         (void) printf("Simulated DDT histogram:\n");
2505
2506         zpool_dump_ddt(&dds_total, &ddh_total);
2507
2508         dump_dedup_ratio(&dds_total);
2509 }
2510
2511 static void
2512 dump_zpool(spa_t *spa)
2513 {
2514         dsl_pool_t *dp = spa_get_dsl(spa);
2515         int rc = 0;
2516
2517         if (dump_opt['S']) {
2518                 dump_simulated_ddt(spa);
2519                 return;
2520         }
2521
2522         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2523                 (void) printf("\nCached configuration:\n");
2524                 dump_nvlist(spa->spa_config, 8);
2525         }
2526
2527         if (dump_opt['C'])
2528                 dump_config(spa);
2529
2530         if (dump_opt['u'])
2531                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2532
2533         if (dump_opt['D'])
2534                 dump_all_ddts(spa);
2535
2536         if (dump_opt['d'] > 2 || dump_opt['m'])
2537                 dump_metaslabs(spa);
2538
2539         if (dump_opt['d'] || dump_opt['i']) {
2540                 dump_dir(dp->dp_meta_objset);
2541                 if (dump_opt['d'] >= 3) {
2542                         dump_bpobj(&spa->spa_deferred_bpobj, "Deferred frees");
2543                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2544                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2545                                     "Pool snapshot frees");
2546                         }
2547
2548                         if (spa_feature_is_active(spa,
2549                             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2550                                 dump_bptree(spa->spa_meta_objset,
2551                                     spa->spa_dsl_pool->dp_bptree_obj,
2552                                     "Pool dataset frees");
2553                         }
2554                         dump_dtl(spa->spa_root_vdev, 0);
2555                 }
2556                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2557                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2558         }
2559         if (dump_opt['b'] || dump_opt['c'])
2560                 rc = dump_block_stats(spa);
2561
2562         if (dump_opt['s'])
2563                 show_pool_stats(spa);
2564
2565         if (dump_opt['h'])
2566                 dump_history(spa);
2567
2568         if (rc != 0)
2569                 exit(rc);
2570 }
2571
2572 #define ZDB_FLAG_CHECKSUM       0x0001
2573 #define ZDB_FLAG_DECOMPRESS     0x0002
2574 #define ZDB_FLAG_BSWAP          0x0004
2575 #define ZDB_FLAG_GBH            0x0008
2576 #define ZDB_FLAG_INDIRECT       0x0010
2577 #define ZDB_FLAG_PHYS           0x0020
2578 #define ZDB_FLAG_RAW            0x0040
2579 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2580
2581 int flagbits[256];
2582
2583 static void
2584 zdb_print_blkptr(blkptr_t *bp, int flags)
2585 {
2586         char blkbuf[BP_SPRINTF_LEN];
2587
2588         if (flags & ZDB_FLAG_BSWAP)
2589                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2590
2591         sprintf_blkptr(blkbuf, bp);
2592         (void) printf("%s\n", blkbuf);
2593 }
2594
2595 static void
2596 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2597 {
2598         int i;
2599
2600         for (i = 0; i < nbps; i++)
2601                 zdb_print_blkptr(&bp[i], flags);
2602 }
2603
2604 static void
2605 zdb_dump_gbh(void *buf, int flags)
2606 {
2607         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2608 }
2609
2610 static void
2611 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2612 {
2613         if (flags & ZDB_FLAG_BSWAP)
2614                 byteswap_uint64_array(buf, size);
2615         VERIFY(write(fileno(stdout), buf, size) == size);
2616 }
2617
2618 static void
2619 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2620 {
2621         uint64_t *d = (uint64_t *)buf;
2622         int nwords = size / sizeof (uint64_t);
2623         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2624         int i, j;
2625         char *hdr, *c;
2626
2627
2628         if (do_bswap)
2629                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2630         else
2631                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2632
2633         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2634
2635         for (i = 0; i < nwords; i += 2) {
2636                 (void) printf("%06llx:  %016llx  %016llx  ",
2637                     (u_longlong_t)(i * sizeof (uint64_t)),
2638                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2639                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2640
2641                 c = (char *)&d[i];
2642                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2643                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2644                 (void) printf("\n");
2645         }
2646 }
2647
2648 /*
2649  * There are two acceptable formats:
2650  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2651  *      child[.child]*    - For example: 0.1.1
2652  *
2653  * The second form can be used to specify arbitrary vdevs anywhere
2654  * in the heirarchy.  For example, in a pool with a mirror of
2655  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2656  */
2657 static vdev_t *
2658 zdb_vdev_lookup(vdev_t *vdev, char *path)
2659 {
2660         char *s, *p, *q;
2661         int i;
2662
2663         if (vdev == NULL)
2664                 return (NULL);
2665
2666         /* First, assume the x.x.x.x format */
2667         i = (int)strtoul(path, &s, 10);
2668         if (s == path || (s && *s != '.' && *s != '\0'))
2669                 goto name;
2670         if (i < 0 || i >= vdev->vdev_children)
2671                 return (NULL);
2672
2673         vdev = vdev->vdev_child[i];
2674         if (*s == '\0')
2675                 return (vdev);
2676         return (zdb_vdev_lookup(vdev, s+1));
2677
2678 name:
2679         for (i = 0; i < vdev->vdev_children; i++) {
2680                 vdev_t *vc = vdev->vdev_child[i];
2681
2682                 if (vc->vdev_path == NULL) {
2683                         vc = zdb_vdev_lookup(vc, path);
2684                         if (vc == NULL)
2685                                 continue;
2686                         else
2687                                 return (vc);
2688                 }
2689
2690                 p = strrchr(vc->vdev_path, '/');
2691                 p = p ? p + 1 : vc->vdev_path;
2692                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2693
2694                 if (strcmp(vc->vdev_path, path) == 0)
2695                         return (vc);
2696                 if (strcmp(p, path) == 0)
2697                         return (vc);
2698                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2699                         return (vc);
2700         }
2701
2702         return (NULL);
2703 }
2704
2705 /*
2706  * Read a block from a pool and print it out.  The syntax of the
2707  * block descriptor is:
2708  *
2709  *      pool:vdev_specifier:offset:size[:flags]
2710  *
2711  *      pool           - The name of the pool you wish to read from
2712  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2713  *      offset         - offset, in hex, in bytes
2714  *      size           - Amount of data to read, in hex, in bytes
2715  *      flags          - A string of characters specifying options
2716  *               b: Decode a blkptr at given offset within block
2717  *              *c: Calculate and display checksums
2718  *               d: Decompress data before dumping
2719  *               e: Byteswap data before dumping
2720  *               g: Display data as a gang block header
2721  *               i: Display as an indirect block
2722  *               p: Do I/O to physical offset
2723  *               r: Dump raw data to stdout
2724  *
2725  *              * = not yet implemented
2726  */
2727 static void
2728 zdb_read_block(char *thing, spa_t *spa)
2729 {
2730         blkptr_t blk, *bp = &blk;
2731         dva_t *dva = bp->blk_dva;
2732         int flags = 0;
2733         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2734         zio_t *zio;
2735         vdev_t *vd;
2736         void *pbuf, *lbuf, *buf;
2737         char *s, *p, *dup, *vdev, *flagstr;
2738         int i, error;
2739
2740         dup = strdup(thing);
2741         s = strtok(dup, ":");
2742         vdev = s ? s : "";
2743         s = strtok(NULL, ":");
2744         offset = strtoull(s ? s : "", NULL, 16);
2745         s = strtok(NULL, ":");
2746         size = strtoull(s ? s : "", NULL, 16);
2747         s = strtok(NULL, ":");
2748         flagstr = s ? s : "";
2749
2750         s = NULL;
2751         if (size == 0)
2752                 s = "size must not be zero";
2753         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2754                 s = "size must be a multiple of sector size";
2755         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2756                 s = "offset must be a multiple of sector size";
2757         if (s) {
2758                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2759                 free(dup);
2760                 return;
2761         }
2762
2763         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2764                 for (i = 0; flagstr[i]; i++) {
2765                         int bit = flagbits[(uchar_t)flagstr[i]];
2766
2767                         if (bit == 0) {
2768                                 (void) printf("***Invalid flag: %c\n",
2769                                     flagstr[i]);
2770                                 continue;
2771                         }
2772                         flags |= bit;
2773
2774                         /* If it's not something with an argument, keep going */
2775                         if ((bit & (ZDB_FLAG_CHECKSUM |
2776                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2777                                 continue;
2778
2779                         p = &flagstr[i + 1];
2780                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2781                                 blkptr_offset = strtoull(p, &p, 16);
2782                         if (*p != ':' && *p != '\0') {
2783                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2784                                 free(dup);
2785                                 return;
2786                         }
2787                 }
2788         }
2789
2790         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2791         if (vd == NULL) {
2792                 (void) printf("***Invalid vdev: %s\n", vdev);
2793                 free(dup);
2794                 return;
2795         } else {
2796                 if (vd->vdev_path)
2797                         (void) fprintf(stderr, "Found vdev: %s\n",
2798                             vd->vdev_path);
2799                 else
2800                         (void) fprintf(stderr, "Found vdev type: %s\n",
2801                             vd->vdev_ops->vdev_op_type);
2802         }
2803
2804         psize = size;
2805         lsize = size;
2806
2807         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2808         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2809
2810         BP_ZERO(bp);
2811
2812         DVA_SET_VDEV(&dva[0], vd->vdev_id);
2813         DVA_SET_OFFSET(&dva[0], offset);
2814         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2815         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2816
2817         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2818
2819         BP_SET_LSIZE(bp, lsize);
2820         BP_SET_PSIZE(bp, psize);
2821         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2822         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2823         BP_SET_TYPE(bp, DMU_OT_NONE);
2824         BP_SET_LEVEL(bp, 0);
2825         BP_SET_DEDUP(bp, 0);
2826         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2827
2828         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2829         zio = zio_root(spa, NULL, NULL, 0);
2830
2831         if (vd == vd->vdev_top) {
2832                 /*
2833                  * Treat this as a normal block read.
2834                  */
2835                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2836                     ZIO_PRIORITY_SYNC_READ,
2837                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2838         } else {
2839                 /*
2840                  * Treat this as a vdev child I/O.
2841                  */
2842                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2843                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2844                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2845                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2846                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2847         }
2848
2849         error = zio_wait(zio);
2850         spa_config_exit(spa, SCL_STATE, FTAG);
2851
2852         if (error) {
2853                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2854                 goto out;
2855         }
2856
2857         if (flags & ZDB_FLAG_DECOMPRESS) {
2858                 /*
2859                  * We don't know how the data was compressed, so just try
2860                  * every decompress function at every inflated blocksize.
2861                  */
2862                 enum zio_compress c;
2863                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2864                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2865
2866                 bcopy(pbuf, pbuf2, psize);
2867
2868                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2869                     SPA_MAXBLOCKSIZE - psize) == 0);
2870
2871                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2872                     SPA_MAXBLOCKSIZE - psize) == 0);
2873
2874                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2875                     lsize -= SPA_MINBLOCKSIZE) {
2876                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2877                                 if (zio_decompress_data(c, pbuf, lbuf,
2878                                     psize, lsize) == 0 &&
2879                                     zio_decompress_data(c, pbuf2, lbuf2,
2880                                     psize, lsize) == 0 &&
2881                                     bcmp(lbuf, lbuf2, lsize) == 0)
2882                                         break;
2883                         }
2884                         if (c != ZIO_COMPRESS_FUNCTIONS)
2885                                 break;
2886                         lsize -= SPA_MINBLOCKSIZE;
2887                 }
2888
2889                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2890                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2891
2892                 if (lsize <= psize) {
2893                         (void) printf("Decompress of %s failed\n", thing);
2894                         goto out;
2895                 }
2896                 buf = lbuf;
2897                 size = lsize;
2898         } else {
2899                 buf = pbuf;
2900                 size = psize;
2901         }
2902
2903         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2904                 zdb_print_blkptr((blkptr_t *)(void *)
2905                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2906         else if (flags & ZDB_FLAG_RAW)
2907                 zdb_dump_block_raw(buf, size, flags);
2908         else if (flags & ZDB_FLAG_INDIRECT)
2909                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2910                     flags);
2911         else if (flags & ZDB_FLAG_GBH)
2912                 zdb_dump_gbh(buf, flags);
2913         else
2914                 zdb_dump_block(thing, buf, size, flags);
2915
2916 out:
2917         umem_free(pbuf, SPA_MAXBLOCKSIZE);
2918         umem_free(lbuf, SPA_MAXBLOCKSIZE);
2919         free(dup);
2920 }
2921
2922 static boolean_t
2923 pool_match(nvlist_t *cfg, char *tgt)
2924 {
2925         uint64_t v, guid = strtoull(tgt, NULL, 0);
2926         char *s;
2927
2928         if (guid != 0) {
2929                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2930                         return (v == guid);
2931         } else {
2932                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2933                         return (strcmp(s, tgt) == 0);
2934         }
2935         return (B_FALSE);
2936 }
2937
2938 static char *
2939 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2940 {
2941         nvlist_t *pools;
2942         nvlist_t *match = NULL;
2943         char *name = NULL;
2944         char *sepp = NULL;
2945         char sep = 0;
2946         int count = 0;
2947         importargs_t args = { 0 };
2948
2949         args.paths = dirc;
2950         args.path = dirv;
2951         args.can_be_active = B_TRUE;
2952
2953         if ((sepp = strpbrk(*target, "/@")) != NULL) {
2954                 sep = *sepp;
2955                 *sepp = '\0';
2956         }
2957
2958         pools = zpool_search_import(g_zfs, &args);
2959
2960         if (pools != NULL) {
2961                 nvpair_t *elem = NULL;
2962                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2963                         verify(nvpair_value_nvlist(elem, configp) == 0);
2964                         if (pool_match(*configp, *target)) {
2965                                 count++;
2966                                 if (match != NULL) {
2967                                         /* print previously found config */
2968                                         if (name != NULL) {
2969                                                 (void) printf("%s\n", name);
2970                                                 dump_nvlist(match, 8);
2971                                                 name = NULL;
2972                                         }
2973                                         (void) printf("%s\n",
2974                                             nvpair_name(elem));
2975                                         dump_nvlist(*configp, 8);
2976                                 } else {
2977                                         match = *configp;
2978                                         name = nvpair_name(elem);
2979                                 }
2980                         }
2981                 }
2982         }
2983         if (count > 1)
2984                 (void) fatal("\tMatched %d pools - use pool GUID "
2985                     "instead of pool name or \n"
2986                     "\tpool name part of a dataset name to select pool", count);
2987
2988         if (sepp)
2989                 *sepp = sep;
2990         /*
2991          * If pool GUID was specified for pool id, replace it with pool name
2992          */
2993         if (name && (strstr(*target, name) != *target)) {
2994                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
2995
2996                 *target = umem_alloc(sz, UMEM_NOFAIL);
2997                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
2998         }
2999
3000         *configp = name ? match : NULL;
3001
3002         return (name);
3003 }
3004
3005 int
3006 main(int argc, char **argv)
3007 {
3008         int i, c;
3009         struct rlimit rl = { 1024, 1024 };
3010         spa_t *spa = NULL;
3011         objset_t *os = NULL;
3012         int dump_all = 1;
3013         int verbose = 0;
3014         int error = 0;
3015         char **searchdirs = NULL;
3016         int nsearch = 0;
3017         char *target;
3018         nvlist_t *policy = NULL;
3019         uint64_t max_txg = UINT64_MAX;
3020         int rewind = ZPOOL_NEVER_REWIND;
3021
3022         (void) setrlimit(RLIMIT_NOFILE, &rl);
3023         (void) enable_extended_FILE_stdio(-1, -1);
3024
3025         dprintf_setup(&argc, argv);
3026
3027         while ((c = getopt(argc, argv, "bcdhilmsuCDRSAFLXevp:t:U:P")) != -1) {
3028                 switch (c) {
3029                 case 'b':
3030                 case 'c':
3031                 case 'd':
3032                 case 'h':
3033                 case 'i':
3034                 case 'l':
3035                 case 'm':
3036                 case 's':
3037                 case 'u':
3038                 case 'C':
3039                 case 'D':
3040                 case 'R':
3041                 case 'S':
3042                         dump_opt[c]++;
3043                         dump_all = 0;
3044                         break;
3045                 case 'A':
3046                 case 'F':
3047                 case 'L':
3048                 case 'X':
3049                 case 'e':
3050                 case 'P':
3051                         dump_opt[c]++;
3052                         break;
3053                 case 'v':
3054                         verbose++;
3055                         break;
3056                 case 'p':
3057                         if (searchdirs == NULL) {
3058                                 searchdirs = umem_alloc(sizeof (char *),
3059                                     UMEM_NOFAIL);
3060                         } else {
3061                                 char **tmp = umem_alloc((nsearch + 1) *
3062                                     sizeof (char *), UMEM_NOFAIL);
3063                                 bcopy(searchdirs, tmp, nsearch *
3064                                     sizeof (char *));
3065                                 umem_free(searchdirs,
3066                                     nsearch * sizeof (char *));
3067                                 searchdirs = tmp;
3068                         }
3069                         searchdirs[nsearch++] = optarg;
3070                         break;
3071                 case 't':
3072                         max_txg = strtoull(optarg, NULL, 0);
3073                         if (max_txg < TXG_INITIAL) {
3074                                 (void) fprintf(stderr, "incorrect txg "
3075                                     "specified: %s\n", optarg);
3076                                 usage();
3077                         }
3078                         break;
3079                 case 'U':
3080                         spa_config_path = optarg;
3081                         break;
3082                 default:
3083                         usage();
3084                         break;
3085                 }
3086         }
3087
3088         if (!dump_opt['e'] && searchdirs != NULL) {
3089                 (void) fprintf(stderr, "-p option requires use of -e\n");
3090                 usage();
3091         }
3092
3093         kernel_init(FREAD);
3094         if ((g_zfs = libzfs_init()) == NULL)
3095                 return (1);
3096
3097         if (dump_all)
3098                 verbose = MAX(verbose, 1);
3099
3100         for (c = 0; c < 256; c++) {
3101                 if (dump_all && !strchr("elAFLRSXP", c))
3102                         dump_opt[c] = 1;
3103                 if (dump_opt[c])
3104                         dump_opt[c] += verbose;
3105         }
3106
3107         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3108         zfs_recover = (dump_opt['A'] > 1);
3109
3110         argc -= optind;
3111         argv += optind;
3112
3113         if (argc < 2 && dump_opt['R'])
3114                 usage();
3115         if (argc < 1) {
3116                 if (!dump_opt['e'] && dump_opt['C']) {
3117                         dump_cachefile(spa_config_path);
3118                         return (0);
3119                 }
3120                 usage();
3121         }
3122
3123         if (dump_opt['l']) {
3124                 dump_label(argv[0]);
3125                 return (0);
3126         }
3127
3128         if (dump_opt['X'] || dump_opt['F'])
3129                 rewind = ZPOOL_DO_REWIND |
3130                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3131
3132         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3133             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3134             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3135                 fatal("internal error: %s", strerror(ENOMEM));
3136
3137         error = 0;
3138         target = argv[0];
3139
3140         if (dump_opt['e']) {
3141                 nvlist_t *cfg = NULL;
3142                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3143
3144                 error = ENOENT;
3145                 if (name) {
3146                         if (dump_opt['C'] > 1) {
3147                                 (void) printf("\nConfiguration for import:\n");
3148                                 dump_nvlist(cfg, 8);
3149                         }
3150                         if (nvlist_add_nvlist(cfg,
3151                             ZPOOL_REWIND_POLICY, policy) != 0) {
3152                                 fatal("can't open '%s': %s",
3153                                     target, strerror(ENOMEM));
3154                         }
3155                         if ((error = spa_import(name, cfg, NULL,
3156                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3157                                 error = spa_import(name, cfg, NULL,
3158                                     ZFS_IMPORT_VERBATIM);
3159                         }
3160                 }
3161         }
3162
3163         if (error == 0) {
3164                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3165                         error = spa_open_rewind(target, &spa, FTAG, policy,
3166                             NULL);
3167                         if (error) {
3168                                 /*
3169                                  * If we're missing the log device then
3170                                  * try opening the pool after clearing the
3171                                  * log state.
3172                                  */
3173                                 mutex_enter(&spa_namespace_lock);
3174                                 if ((spa = spa_lookup(target)) != NULL &&
3175                                     spa->spa_log_state == SPA_LOG_MISSING) {
3176                                         spa->spa_log_state = SPA_LOG_CLEAR;
3177                                         error = 0;
3178                                 }
3179                                 mutex_exit(&spa_namespace_lock);
3180
3181                                 if (!error) {
3182                                         error = spa_open_rewind(target, &spa,
3183                                             FTAG, policy, NULL);
3184                                 }
3185                         }
3186                 } else {
3187                         error = dmu_objset_own(target, DMU_OST_ANY,
3188                             B_TRUE, FTAG, &os);
3189                 }
3190         }
3191         nvlist_free(policy);
3192
3193         if (error)
3194                 fatal("can't open '%s': %s", target, strerror(error));
3195
3196         argv++;
3197         argc--;
3198         if (!dump_opt['R']) {
3199                 if (argc > 0) {
3200                         zopt_objects = argc;
3201                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3202                         for (i = 0; i < zopt_objects; i++) {
3203                                 errno = 0;
3204                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3205                                 if (zopt_object[i] == 0 && errno != 0)
3206                                         fatal("bad number %s: %s",
3207                                             argv[i], strerror(errno));
3208                         }
3209                 }
3210                 (os != NULL) ? dump_dir(os) : dump_zpool(spa);
3211         } else {
3212                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3213                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3214                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3215                 flagbits['e'] = ZDB_FLAG_BSWAP;
3216                 flagbits['g'] = ZDB_FLAG_GBH;
3217                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3218                 flagbits['p'] = ZDB_FLAG_PHYS;
3219                 flagbits['r'] = ZDB_FLAG_RAW;
3220
3221                 for (i = 0; i < argc; i++)
3222                         zdb_read_block(argv[i], spa);
3223         }
3224
3225         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3226
3227         fuid_table_destroy();
3228         sa_loaded = B_FALSE;
3229
3230         libzfs_fini(g_zfs);
3231         kernel_fini();
3232
3233         return (0);
3234 }