cmd/zdb/zdb.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24
  25 #include <stdio.h>
  26 #include <stdio_ext.h>
  27 #include <stdlib.h>
  28 #include <ctype.h>
  29 #include <sys/zfs_context.h>
  30 #include <sys/spa.h>
  31 #include <sys/spa_impl.h>
  32 #include <sys/dmu.h>
  33 #include <sys/zap.h>
  34 #include <sys/fs/zfs.h>
  35 #include <sys/zfs_znode.h>
  36 #include <sys/zfs_sa.h>
  37 #include <sys/sa.h>
  38 #include <sys/sa_impl.h>
  39 #include <sys/vdev.h>
  40 #include <sys/vdev_impl.h>
  41 #include <sys/metaslab_impl.h>
  42 #include <sys/dmu_objset.h>
  43 #include <sys/dsl_dir.h>
  44 #include <sys/dsl_dataset.h>
  45 #include <sys/dsl_pool.h>
  46 #include <sys/dbuf.h>
  47 #include <sys/zil.h>
  48 #include <sys/zil_impl.h>
  49 #include <sys/stat.h>
  50 #include <sys/resource.h>
  51 #include <sys/dmu_traverse.h>
  52 #include <sys/zio_checksum.h>
  53 #include <sys/zio_compress.h>
  54 #include <sys/zfs_fuid.h>
  55 #include <sys/arc.h>
  56 #include <sys/ddt.h>
  57 #undef ZFS_MAXNAMELEN
  58 #include <libzfs.h>
  59
  60 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \
  61     zio_compress_table[(idx)].ci_name : "UNKNOWN")
  62 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \
  63     zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  64 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \
  65     dmu_ot[(idx)].ot_name : "UNKNOWN")
  66 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : DMU_OT_NUMTYPES)
  67
  68 #ifndef lint
  69 extern int zfs_recover;
  70 #else
  71 int zfs_recover;
  72 #endif
  73
  74 const char cmdname[] = "zdb";
  75 uint8_t dump_opt[256];
  76
  77 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  78
  79 extern void dump_intent_log(zilog_t *);
  80 uint64_t *zopt_object = NULL;
  81 int zopt_objects = 0;
  82 libzfs_handle_t *g_zfs;
  83
  84 /*
  85  * These libumem hooks provide a reasonable set of defaults for the allocator's
  86  * debugging facilities.
  87  */
  88 const char *
  89 _umem_debug_init(void)
  90 {
  91         return ("default,verbose"); /* $UMEM_DEBUG setting */
  92 }
  93
  94 const char *
  95 _umem_logging_init(void)
  96 {
  97         return ("fail,contents"); /* $UMEM_LOGGING setting */
  98 }
  99
 100 static void
 101 usage(void)
 102 {
 103         (void) fprintf(stderr,
 104             "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
 105             "poolname [object...]\n"
 106             "       %s [-divPA] [-e -p path...] dataset [object...]\n"
 107             "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] "
 108             "poolname [vdev [metaslab...]]\n"
 109             "       %s -R [-A] [-e [-p path...]] poolname "
 110             "vdev:offset:size[:flags]\n"
 111             "       %s -S [-PA] [-e [-p path...]] poolname\n"
 112             "       %s -l [-uA] device\n"
 113             "       %s -C [-A] [-U config]\n\n",
 114             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 115
 116         (void) fprintf(stderr, "    Dataset name must include at least one "
 117             "separator character '/' or '@'\n");
 118         (void) fprintf(stderr, "    If dataset name is specified, only that "
 119             "dataset is dumped\n");
 120         (void) fprintf(stderr, "    If object numbers are specified, only "
 121             "those objects are dumped\n\n");
 122         (void) fprintf(stderr, "    Options to control amount of output:\n");
 123         (void) fprintf(stderr, "        -u uberblock\n");
 124         (void) fprintf(stderr, "        -d dataset(s)\n");
 125         (void) fprintf(stderr, "        -i intent logs\n");
 126         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 127         (void) fprintf(stderr, "        -h pool history\n");
 128         (void) fprintf(stderr, "        -b block statistics\n");
 129         (void) fprintf(stderr, "        -m metaslabs\n");
 130         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 131             "all data) blocks\n");
 132         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 133         (void) fprintf(stderr, "        -D dedup statistics\n");
 134         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 135         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 136         (void) fprintf(stderr, "        -l dump label contents\n");
 137         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 138             "load spacemaps)\n");
 139         (void) fprintf(stderr, "        -R read and display block from a "
 140             "device\n\n");
 141         (void) fprintf(stderr, "    Below options are intended for use "
 142             "with other options (except -l):\n");
 143         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 144             "panic recovery (-AA) or both (-AAA)\n");
 145         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 146             "safe range of transaction groups\n");
 147         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 148             "cachefile\n");
 149         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 150             "work with dataset)\n");
 151         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 152             "has altroot/not in a cachefile\n");
 153         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 154             "-e to specify path to vdev dir\n");
 155         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 156         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 157             "searching for uberblocks\n");
 158         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 159             "to make only that option verbose\n");
 160         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 161         exit(1);
 162 }
 163
 164 /*
 165  * Called for usage errors that are discovered after a call to spa_open(),
 166  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 167  */
 168
 169 static void
 170 fatal(const char *fmt, ...)
 171 {
 172         va_list ap;
 173
 174         va_start(ap, fmt);
 175         (void) fprintf(stderr, "%s: ", cmdname);
 176         (void) vfprintf(stderr, fmt, ap);
 177         va_end(ap);
 178         (void) fprintf(stderr, "\n");
 179
 180         exit(1);
 181 }
 182
 183 /* ARGSUSED */
 184 static void
 185 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 186 {
 187         nvlist_t *nv;
 188         size_t nvsize = *(uint64_t *)data;
 189         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 190
 191         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 192
 193         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 194
 195         umem_free(packed, nvsize);
 196
 197         dump_nvlist(nv, 8);
 198
 199         nvlist_free(nv);
 200 }
 201
 202 static void
 203 zdb_nicenum(uint64_t num, char *buf)
 204 {
 205         if (dump_opt['P'])
 206                 (void) sprintf(buf, "%llu", (longlong_t)num);
 207         else
 208                 nicenum(num, buf);
 209 }
 210
 211 const char dump_zap_stars[] = "****************************************";
 212 const int dump_zap_width = sizeof (dump_zap_stars) - 1;
 213
 214 static void
 215 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
 216 {
 217         int i;
 218         int minidx = ZAP_HISTOGRAM_SIZE - 1;
 219         int maxidx = 0;
 220         uint64_t max = 0;
 221
 222         for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
 223                 if (histo[i] > max)
 224                         max = histo[i];
 225                 if (histo[i] > 0 && i > maxidx)
 226                         maxidx = i;
 227                 if (histo[i] > 0 && i < minidx)
 228                         minidx = i;
 229         }
 230
 231         if (max < dump_zap_width)
 232                 max = dump_zap_width;
 233
 234         for (i = minidx; i <= maxidx; i++)
 235                 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
 236                     &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
 237 }
 238
 239 static void
 240 dump_zap_stats(objset_t *os, uint64_t object)
 241 {
 242         int error;
 243         zap_stats_t zs;
 244
 245         error = zap_get_stats(os, object, &zs);
 246         if (error)
 247                 return;
 248
 249         if (zs.zs_ptrtbl_len == 0) {
 250                 ASSERT(zs.zs_num_blocks == 1);
 251                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 252                     (u_longlong_t)zs.zs_blocksize,
 253                     (u_longlong_t)zs.zs_num_entries);
 254                 return;
 255         }
 256
 257         (void) printf("\tFat ZAP stats:\n");
 258
 259         (void) printf("\t\tPointer table:\n");
 260         (void) printf("\t\t\t%llu elements\n",
 261             (u_longlong_t)zs.zs_ptrtbl_len);
 262         (void) printf("\t\t\tzt_blk: %llu\n",
 263             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 264         (void) printf("\t\t\tzt_numblks: %llu\n",
 265             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 266         (void) printf("\t\t\tzt_shift: %llu\n",
 267             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 268         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 269             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 270         (void) printf("\t\t\tzt_nextblk: %llu\n",
 271             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 272
 273         (void) printf("\t\tZAP entries: %llu\n",
 274             (u_longlong_t)zs.zs_num_entries);
 275         (void) printf("\t\tLeaf blocks: %llu\n",
 276             (u_longlong_t)zs.zs_num_leafs);
 277         (void) printf("\t\tTotal blocks: %llu\n",
 278             (u_longlong_t)zs.zs_num_blocks);
 279         (void) printf("\t\tzap_block_type: 0x%llx\n",
 280             (u_longlong_t)zs.zs_block_type);
 281         (void) printf("\t\tzap_magic: 0x%llx\n",
 282             (u_longlong_t)zs.zs_magic);
 283         (void) printf("\t\tzap_salt: 0x%llx\n",
 284             (u_longlong_t)zs.zs_salt);
 285
 286         (void) printf("\t\tLeafs with 2^n pointers:\n");
 287         dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
 288
 289         (void) printf("\t\tBlocks with n*5 entries:\n");
 290         dump_zap_histogram(zs.zs_blocks_with_n5_entries);
 291
 292         (void) printf("\t\tBlocks n/10 full:\n");
 293         dump_zap_histogram(zs.zs_blocks_n_tenths_full);
 294
 295         (void) printf("\t\tEntries with n chunks:\n");
 296         dump_zap_histogram(zs.zs_entries_using_n_chunks);
 297
 298         (void) printf("\t\tBuckets with n entries:\n");
 299         dump_zap_histogram(zs.zs_buckets_with_n_entries);
 300 }
 301
 302 /*ARGSUSED*/
 303 static void
 304 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 305 {
 306 }
 307
 308 /*ARGSUSED*/
 309 static void
 310 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 311 {
 312         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 313 }
 314
 315 /*ARGSUSED*/
 316 void
 317 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 318 {
 319 }
 320
 321 /*ARGSUSED*/
 322 static void
 323 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 324 {
 325 }
 326
 327 /*ARGSUSED*/
 328 static void
 329 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 330 {
 331         zap_cursor_t zc;
 332         zap_attribute_t attr;
 333         void *prop;
 334         int i;
 335
 336         dump_zap_stats(os, object);
 337         (void) printf("\n");
 338
 339         for (zap_cursor_init(&zc, os, object);
 340             zap_cursor_retrieve(&zc, &attr) == 0;
 341             zap_cursor_advance(&zc)) {
 342                 (void) printf("\t\t%s = ", attr.za_name);
 343                 if (attr.za_num_integers == 0) {
 344                         (void) printf("\n");
 345                         continue;
 346                 }
 347                 prop = umem_zalloc(attr.za_num_integers *
 348                     attr.za_integer_length, UMEM_NOFAIL);
 349                 (void) zap_lookup(os, object, attr.za_name,
 350                     attr.za_integer_length, attr.za_num_integers, prop);
 351                 if (attr.za_integer_length == 1) {
 352                         (void) printf("%s", (char *)prop);
 353                 } else {
 354                         for (i = 0; i < attr.za_num_integers; i++) {
 355                                 switch (attr.za_integer_length) {
 356                                 case 2:
 357                                         (void) printf("%u ",
 358                                             ((uint16_t *)prop)[i]);
 359                                         break;
 360                                 case 4:
 361                                         (void) printf("%u ",
 362                                             ((uint32_t *)prop)[i]);
 363                                         break;
 364                                 case 8:
 365                                         (void) printf("%lld ",
 366                                             (u_longlong_t)((int64_t *)prop)[i]);
 367                                         break;
 368                                 }
 369                         }
 370                 }
 371                 (void) printf("\n");
 372                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 373         }
 374         zap_cursor_fini(&zc);
 375 }
 376
 377 /*ARGSUSED*/
 378 static void
 379 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 380 {
 381         dump_zap_stats(os, object);
 382         /* contents are printed elsewhere, properly decoded */
 383 }
 384
 385 /*ARGSUSED*/
 386 static void
 387 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 388 {
 389         zap_cursor_t zc;
 390         zap_attribute_t attr;
 391
 392         dump_zap_stats(os, object);
 393         (void) printf("\n");
 394
 395         for (zap_cursor_init(&zc, os, object);
 396             zap_cursor_retrieve(&zc, &attr) == 0;
 397             zap_cursor_advance(&zc)) {
 398                 (void) printf("\t\t%s = ", attr.za_name);
 399                 if (attr.za_num_integers == 0) {
 400                         (void) printf("\n");
 401                         continue;
 402                 }
 403                 (void) printf(" %llx : [%d:%d:%d]\n",
 404                     (u_longlong_t)attr.za_first_integer,
 405                     (int)ATTR_LENGTH(attr.za_first_integer),
 406                     (int)ATTR_BSWAP(attr.za_first_integer),
 407                     (int)ATTR_NUM(attr.za_first_integer));
 408         }
 409         zap_cursor_fini(&zc);
 410 }
 411
 412 /*ARGSUSED*/
 413 static void
 414 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 415 {
 416         zap_cursor_t zc;
 417         zap_attribute_t attr;
 418         uint16_t *layout_attrs;
 419         int i;
 420
 421         dump_zap_stats(os, object);
 422         (void) printf("\n");
 423
 424         for (zap_cursor_init(&zc, os, object);
 425             zap_cursor_retrieve(&zc, &attr) == 0;
 426             zap_cursor_advance(&zc)) {
 427                 (void) printf("\t\t%s = [", attr.za_name);
 428                 if (attr.za_num_integers == 0) {
 429                         (void) printf("\n");
 430                         continue;
 431                 }
 432
 433                 VERIFY(attr.za_integer_length == 2);
 434                 layout_attrs = umem_zalloc(attr.za_num_integers *
 435                     attr.za_integer_length, UMEM_NOFAIL);
 436
 437                 VERIFY(zap_lookup(os, object, attr.za_name,
 438                     attr.za_integer_length,
 439                     attr.za_num_integers, layout_attrs) == 0);
 440
 441                 for (i = 0; i != attr.za_num_integers; i++)
 442                         (void) printf(" %d ", (int)layout_attrs[i]);
 443                 (void) printf("]\n");
 444                 umem_free(layout_attrs,
 445                     attr.za_num_integers * attr.za_integer_length);
 446         }
 447         zap_cursor_fini(&zc);
 448 }
 449
 450 /*ARGSUSED*/
 451 static void
 452 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 453 {
 454         zap_cursor_t zc;
 455         zap_attribute_t attr;
 456         const char *typenames[] = {
 457                 /* 0 */ "not specified",
 458                 /* 1 */ "FIFO",
 459                 /* 2 */ "Character Device",
 460                 /* 3 */ "3 (invalid)",
 461                 /* 4 */ "Directory",
 462                 /* 5 */ "5 (invalid)",
 463                 /* 6 */ "Block Device",
 464                 /* 7 */ "7 (invalid)",
 465                 /* 8 */ "Regular File",
 466                 /* 9 */ "9 (invalid)",
 467                 /* 10 */ "Symbolic Link",
 468                 /* 11 */ "11 (invalid)",
 469                 /* 12 */ "Socket",
 470                 /* 13 */ "Door",
 471                 /* 14 */ "Event Port",
 472                 /* 15 */ "15 (invalid)",
 473         };
 474
 475         dump_zap_stats(os, object);
 476         (void) printf("\n");
 477
 478         for (zap_cursor_init(&zc, os, object);
 479             zap_cursor_retrieve(&zc, &attr) == 0;
 480             zap_cursor_advance(&zc)) {
 481                 (void) printf("\t\t%s = %lld (type: %s)\n",
 482                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 483                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 484         }
 485         zap_cursor_fini(&zc);
 486 }
 487
 488 static void
 489 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 490 {
 491         uint64_t alloc, offset, entry;
 492         uint8_t mapshift = sm->sm_shift;
 493         uint64_t mapstart = sm->sm_start;
 494         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 495                             "INVALID", "INVALID", "INVALID", "INVALID" };
 496
 497         if (smo->smo_object == 0)
 498                 return;
 499
 500         /*
 501          * Print out the freelist entries in both encoded and decoded form.
 502          */
 503         alloc = 0;
 504         for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 505                 VERIFY3U(0, ==, dmu_read(os, smo->smo_object, offset,
 506                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 507                 if (SM_DEBUG_DECODE(entry)) {
 508                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 509                             (u_longlong_t)(offset / sizeof (entry)),
 510                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 511                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 512                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 513                 } else {
 514                         (void) printf("\t    [%6llu]    %c  range:"
 515                             " %010llx-%010llx  size: %06llx\n",
 516                             (u_longlong_t)(offset / sizeof (entry)),
 517                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 518                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 519                             mapshift) + mapstart),
 520                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 521                             mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
 522                             mapshift)),
 523                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 524                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 525                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 526                         else
 527                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 528                 }
 529         }
 530         if (alloc != smo->smo_alloc) {
 531                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 532                     "with space map summary (%llu)\n",
 533                     (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
 534         }
 535 }
 536
 537 static void
 538 dump_metaslab_stats(metaslab_t *msp)
 539 {
 540         char maxbuf[32];
 541         space_map_t *sm = &msp->ms_map;
 542         avl_tree_t *t = sm->sm_pp_root;
 543         int free_pct = sm->sm_space * 100 / sm->sm_size;
 544
 545         zdb_nicenum(space_map_maxsize(sm), maxbuf);
 546
 547         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 548             "segments", avl_numnodes(t), "maxsize", maxbuf,
 549             "freepct", free_pct);
 550 }
 551
 552 static void
 553 dump_metaslab(metaslab_t *msp)
 554 {
 555         vdev_t *vd = msp->ms_group->mg_vd;
 556         spa_t *spa = vd->vdev_spa;
 557         space_map_t *sm = &msp->ms_map;
 558         space_map_obj_t *smo = &msp->ms_smo;
 559         char freebuf[32];
 560
 561         zdb_nicenum(sm->sm_size - smo->smo_alloc, freebuf);
 562
 563         (void) printf(
 564             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 565             (u_longlong_t)(sm->sm_start / sm->sm_size),
 566             (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
 567
 568         if (dump_opt['m'] > 1 && !dump_opt['L']) {
 569                 mutex_enter(&msp->ms_lock);
 570                 space_map_load_wait(sm);
 571                 if (!sm->sm_loaded)
 572                         VERIFY(space_map_load(sm, zfs_metaslab_ops,
 573                             SM_FREE, smo, spa->spa_meta_objset) == 0);
 574                 dump_metaslab_stats(msp);
 575                 space_map_unload(sm);
 576                 mutex_exit(&msp->ms_lock);
 577         }
 578
 579         if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
 580                 ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
 581
 582                 mutex_enter(&msp->ms_lock);
 583                 dump_spacemap(spa->spa_meta_objset, smo, sm);
 584                 mutex_exit(&msp->ms_lock);
 585         }
 586 }
 587
 588 static void
 589 print_vdev_metaslab_header(vdev_t *vd)
 590 {
 591         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 592             (u_longlong_t)vd->vdev_id,
 593             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 594             "offset", "spacemap", "free");
 595         (void) printf("\t%15s   %19s   %15s   %10s\n",
 596             "---------------", "-------------------",
 597             "---------------", "-------------");
 598 }
 599
 600 static void
 601 dump_metaslabs(spa_t *spa)
 602 {
 603         vdev_t *vd, *rvd = spa->spa_root_vdev;
 604         uint64_t m, c = 0, children = rvd->vdev_children;
 605
 606         (void) printf("\nMetaslabs:\n");
 607
 608         if (!dump_opt['d'] && zopt_objects > 0) {
 609                 c = zopt_object[0];
 610
 611                 if (c >= children)
 612                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 613
 614                 if (zopt_objects > 1) {
 615                         vd = rvd->vdev_child[c];
 616                         print_vdev_metaslab_header(vd);
 617
 618                         for (m = 1; m < zopt_objects; m++) {
 619                                 if (zopt_object[m] < vd->vdev_ms_count)
 620                                         dump_metaslab(
 621                                             vd->vdev_ms[zopt_object[m]]);
 622                                 else
 623                                         (void) fprintf(stderr, "bad metaslab "
 624                                             "number %llu\n",
 625                                             (u_longlong_t)zopt_object[m]);
 626                         }
 627                         (void) printf("\n");
 628                         return;
 629                 }
 630                 children = c + 1;
 631         }
 632         for (; c < children; c++) {
 633                 vd = rvd->vdev_child[c];
 634                 print_vdev_metaslab_header(vd);
 635
 636                 for (m = 0; m < vd->vdev_ms_count; m++)
 637                         dump_metaslab(vd->vdev_ms[m]);
 638                 (void) printf("\n");
 639         }
 640 }
 641
 642 static void
 643 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 644 {
 645         const ddt_phys_t *ddp = dde->dde_phys;
 646         const ddt_key_t *ddk = &dde->dde_key;
 647         char *types[4] = { "ditto", "single", "double", "triple" };
 648         char blkbuf[BP_SPRINTF_LEN];
 649         blkptr_t blk;
 650         int p;
 651
 652         for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 653                 if (ddp->ddp_phys_birth == 0)
 654                         continue;
 655                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 656                 sprintf_blkptr(blkbuf, &blk);
 657                 (void) printf("index %llx refcnt %llu %s %s\n",
 658                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 659                     types[p], blkbuf);
 660         }
 661 }
 662
 663 static void
 664 dump_dedup_ratio(const ddt_stat_t *dds)
 665 {
 666         double rL, rP, rD, D, dedup, compress, copies;
 667
 668         if (dds->dds_blocks == 0)
 669                 return;
 670
 671         rL = (double)dds->dds_ref_lsize;
 672         rP = (double)dds->dds_ref_psize;
 673         rD = (double)dds->dds_ref_dsize;
 674         D = (double)dds->dds_dsize;
 675
 676         dedup = rD / D;
 677         compress = rL / rP;
 678         copies = rD / rP;
 679
 680         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 681             "dedup * compress / copies = %.2f\n\n",
 682             dedup, compress, copies, dedup * compress / copies);
 683 }
 684
 685 static void
 686 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 687 {
 688         char name[DDT_NAMELEN];
 689         ddt_entry_t dde;
 690         uint64_t walk = 0;
 691         dmu_object_info_t doi;
 692         uint64_t count, dspace, mspace;
 693         int error;
 694
 695         error = ddt_object_info(ddt, type, class, &doi);
 696
 697         if (error == ENOENT)
 698                 return;
 699         ASSERT(error == 0);
 700
 701         error = ddt_object_count(ddt, type, class, &count);
 702         ASSERT(error == 0);
 703         if (count == 0)
 704                 return;
 705
 706         dspace = doi.doi_physical_blocks_512 << 9;
 707         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 708
 709         ddt_object_name(ddt, type, class, name);
 710
 711         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 712             name,
 713             (u_longlong_t)count,
 714             (u_longlong_t)(dspace / count),
 715             (u_longlong_t)(mspace / count));
 716
 717         if (dump_opt['D'] < 3)
 718                 return;
 719
 720         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 721
 722         if (dump_opt['D'] < 4)
 723                 return;
 724
 725         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 726                 return;
 727
 728         (void) printf("%s contents:\n\n", name);
 729
 730         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 731                 dump_dde(ddt, &dde, walk);
 732
 733         ASSERT(error == ENOENT);
 734
 735         (void) printf("\n");
 736 }
 737
 738 static void
 739 dump_all_ddts(spa_t *spa)
 740 {
 741         ddt_histogram_t ddh_total;
 742         ddt_stat_t dds_total;
 743         enum zio_checksum c;
 744         enum ddt_type type;
 745         enum ddt_class class;
 746
 747         bzero(&ddh_total, sizeof (ddt_histogram_t));
 748         bzero(&dds_total, sizeof (ddt_stat_t));
 749
 750         for (c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 751                 ddt_t *ddt = spa->spa_ddt[c];
 752                 for (type = 0; type < DDT_TYPES; type++) {
 753                         for (class = 0; class < DDT_CLASSES;
 754                             class++) {
 755                                 dump_ddt(ddt, type, class);
 756                         }
 757                 }
 758         }
 759
 760         ddt_get_dedup_stats(spa, &dds_total);
 761
 762         if (dds_total.dds_blocks == 0) {
 763                 (void) printf("All DDTs are empty\n");
 764                 return;
 765         }
 766
 767         (void) printf("\n");
 768
 769         if (dump_opt['D'] > 1) {
 770                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
 771                 ddt_get_dedup_histogram(spa, &ddh_total);
 772                 zpool_dump_ddt(&dds_total, &ddh_total);
 773         }
 774
 775         dump_dedup_ratio(&dds_total);
 776 }
 777
 778 static void
 779 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 780 {
 781         char *prefix = (void *)sm;
 782
 783         (void) printf("%s [%llu,%llu) length %llu\n",
 784             prefix,
 785             (u_longlong_t)start,
 786             (u_longlong_t)(start + size),
 787             (u_longlong_t)(size));
 788 }
 789
 790 static void
 791 dump_dtl(vdev_t *vd, int indent)
 792 {
 793         spa_t *spa = vd->vdev_spa;
 794         boolean_t required;
 795         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 796         char prefix[256];
 797         int c, t;
 798
 799         spa_vdev_state_enter(spa, SCL_NONE);
 800         required = vdev_dtl_required(vd);
 801         (void) spa_vdev_state_exit(spa, NULL, 0);
 802
 803         if (indent == 0)
 804                 (void) printf("\nDirty time logs:\n\n");
 805
 806         (void) printf("\t%*s%s [%s]\n", indent, "",
 807             vd->vdev_path ? vd->vdev_path :
 808             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 809             required ? "DTL-required" : "DTL-expendable");
 810
 811         for (t = 0; t < DTL_TYPES; t++) {
 812                 space_map_t *sm = &vd->vdev_dtl[t];
 813                 if (sm->sm_space == 0)
 814                         continue;
 815                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 816                     indent + 2, "", name[t]);
 817                 mutex_enter(sm->sm_lock);
 818                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 819                 mutex_exit(sm->sm_lock);
 820                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 821                         dump_spacemap(spa->spa_meta_objset,
 822                             &vd->vdev_dtl_smo, sm);
 823         }
 824
 825         for (c = 0; c < vd->vdev_children; c++)
 826                 dump_dtl(vd->vdev_child[c], indent + 4);
 827 }
 828
 829 static void
 830 dump_history(spa_t *spa)
 831 {
 832         nvlist_t **events = NULL;
 833         char buf[SPA_MAXBLOCKSIZE];
 834         uint64_t resid, len, off = 0;
 835         uint_t num = 0;
 836         int error;
 837         time_t tsec;
 838         struct tm t;
 839         char tbuf[30];
 840         char internalstr[MAXPATHLEN];
 841         int i;
 842
 843         do {
 844                 len = sizeof (buf);
 845
 846                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
 847                         (void) fprintf(stderr, "Unable to read history: "
 848                             "error %d\n", error);
 849                         return;
 850                 }
 851
 852                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
 853                         break;
 854
 855                 off -= resid;
 856         } while (len != 0);
 857
 858         (void) printf("\nHistory:\n");
 859         for (i = 0; i < num; i++) {
 860                 uint64_t time, txg, ievent;
 861                 char *cmd, *intstr;
 862
 863                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 864                     &time) != 0)
 865                         continue;
 866                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 867                     &cmd) != 0) {
 868                         if (nvlist_lookup_uint64(events[i],
 869                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
 870                                 continue;
 871                         verify(nvlist_lookup_uint64(events[i],
 872                             ZPOOL_HIST_TXG, &txg) == 0);
 873                         verify(nvlist_lookup_string(events[i],
 874                             ZPOOL_HIST_INT_STR, &intstr) == 0);
 875                         if (ievent >= LOG_END)
 876                                 continue;
 877
 878                         (void) snprintf(internalstr,
 879                             sizeof (internalstr),
 880                             "[internal %s txg:%lld] %s",
 881                             zfs_history_event_names[ievent],
 882                             (longlong_t)txg, intstr);
 883                         cmd = internalstr;
 884                 }
 885                 tsec = time;
 886                 (void) localtime_r(&tsec, &t);
 887                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
 888                 (void) printf("%s %s\n", tbuf, cmd);
 889         }
 890 }
 891
 892 /*ARGSUSED*/
 893 static void
 894 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 895 {
 896 }
 897
 898 static uint64_t
 899 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
 900 {
 901         if (dnp == NULL) {
 902                 ASSERT(zb->zb_level < 0);
 903                 if (zb->zb_object == 0)
 904                         return (zb->zb_blkid);
 905                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
 906         }
 907
 908         ASSERT(zb->zb_level >= 0);
 909
 910         return ((zb->zb_blkid <<
 911             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 912             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 913 }
 914
 915 static void
 916 sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
 917 {
 918         const dva_t *dva = bp->blk_dva;
 919         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
 920         int i;
 921
 922         if (dump_opt['b'] >= 5) {
 923                 sprintf_blkptr(blkbuf, bp);
 924                 return;
 925         }
 926
 927         blkbuf[0] = '\0';
 928
 929         for (i = 0; i < ndvas; i++)
 930                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 931                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 932                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 933                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 934
 935         (void) sprintf(blkbuf + strlen(blkbuf),
 936             "%llxL/%llxP F=%llu B=%llu/%llu",
 937             (u_longlong_t)BP_GET_LSIZE(bp),
 938             (u_longlong_t)BP_GET_PSIZE(bp),
 939             (u_longlong_t)bp->blk_fill,
 940             (u_longlong_t)bp->blk_birth,
 941             (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
 942 }
 943
 944 static void
 945 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 946     const dnode_phys_t *dnp)
 947 {
 948         char blkbuf[BP_SPRINTF_LEN];
 949         int l;
 950
 951         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 952         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 953
 954         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
 955
 956         ASSERT(zb->zb_level >= 0);
 957
 958         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 959                 if (l == zb->zb_level) {
 960                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 961                 } else {
 962                         (void) printf(" ");
 963                 }
 964         }
 965
 966         sprintf_blkptr_compact(blkbuf, bp);
 967         (void) printf("%s\n", blkbuf);
 968 }
 969
 970 static int
 971 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 972     blkptr_t *bp, const zbookmark_t *zb)
 973 {
 974         int err = 0;
 975
 976         if (bp->blk_birth == 0)
 977                 return (0);
 978
 979         print_indirect(bp, zb, dnp);
 980
 981         if (BP_GET_LEVEL(bp) > 0) {
 982                 uint32_t flags = ARC_WAIT;
 983                 int i;
 984                 blkptr_t *cbp;
 985                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
 986                 arc_buf_t *buf;
 987                 uint64_t fill = 0;
 988
 989                 err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
 990                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
 991                 if (err)
 992                         return (err);
 993                 ASSERT(buf->b_data);
 994
 995                 /* recursively visit blocks below this */
 996                 cbp = buf->b_data;
 997                 for (i = 0; i < epb; i++, cbp++) {
 998                         zbookmark_t czb;
 999
1000                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1001                             zb->zb_level - 1,
1002                             zb->zb_blkid * epb + i);
1003                         err = visit_indirect(spa, dnp, cbp, &czb);
1004                         if (err)
1005                                 break;
1006                         fill += cbp->blk_fill;
1007                 }
1008                 if (!err)
1009                         ASSERT3U(fill, ==, bp->blk_fill);
1010                 (void) arc_buf_remove_ref(buf, &buf);
1011         }
1012
1013         return (err);
1014 }
1015
1016 /*ARGSUSED*/
1017 static void
1018 dump_indirect(dnode_t *dn)
1019 {
1020         dnode_phys_t *dnp = dn->dn_phys;
1021         int j;
1022         zbookmark_t czb;
1023
1024         (void) printf("Indirect blocks:\n");
1025
1026         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1027             dn->dn_object, dnp->dn_nlevels - 1, 0);
1028         for (j = 0; j < dnp->dn_nblkptr; j++) {
1029                 czb.zb_blkid = j;
1030                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1031                     &dnp->dn_blkptr[j], &czb);
1032         }
1033
1034         (void) printf("\n");
1035 }
1036
1037 /*ARGSUSED*/
1038 static void
1039 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1040 {
1041         dsl_dir_phys_t *dd = data;
1042         time_t crtime;
1043         char nice[32];
1044
1045         if (dd == NULL)
1046                 return;
1047
1048         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1049
1050         crtime = dd->dd_creation_time;
1051         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1052         (void) printf("\t\thead_dataset_obj = %llu\n",
1053             (u_longlong_t)dd->dd_head_dataset_obj);
1054         (void) printf("\t\tparent_dir_obj = %llu\n",
1055             (u_longlong_t)dd->dd_parent_obj);
1056         (void) printf("\t\torigin_obj = %llu\n",
1057             (u_longlong_t)dd->dd_origin_obj);
1058         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1059             (u_longlong_t)dd->dd_child_dir_zapobj);
1060         zdb_nicenum(dd->dd_used_bytes, nice);
1061         (void) printf("\t\tused_bytes = %s\n", nice);
1062         zdb_nicenum(dd->dd_compressed_bytes, nice);
1063         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1064         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1065         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1066         zdb_nicenum(dd->dd_quota, nice);
1067         (void) printf("\t\tquota = %s\n", nice);
1068         zdb_nicenum(dd->dd_reserved, nice);
1069         (void) printf("\t\treserved = %s\n", nice);
1070         (void) printf("\t\tprops_zapobj = %llu\n",
1071             (u_longlong_t)dd->dd_props_zapobj);
1072         (void) printf("\t\tdeleg_zapobj = %llu\n",
1073             (u_longlong_t)dd->dd_deleg_zapobj);
1074         (void) printf("\t\tflags = %llx\n",
1075             (u_longlong_t)dd->dd_flags);
1076
1077 #define DO(which) \
1078         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1079         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1080         DO(HEAD);
1081         DO(SNAP);
1082         DO(CHILD);
1083         DO(CHILD_RSRV);
1084         DO(REFRSRV);
1085 #undef DO
1086 }
1087
1088 /*ARGSUSED*/
1089 static void
1090 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1091 {
1092         dsl_dataset_phys_t *ds = data;
1093         time_t crtime;
1094         char used[32], compressed[32], uncompressed[32], unique[32];
1095         char blkbuf[BP_SPRINTF_LEN];
1096
1097         if (ds == NULL)
1098                 return;
1099
1100         ASSERT(size == sizeof (*ds));
1101         crtime = ds->ds_creation_time;
1102         zdb_nicenum(ds->ds_used_bytes, used);
1103         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1104         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1105         zdb_nicenum(ds->ds_unique_bytes, unique);
1106         sprintf_blkptr(blkbuf, &ds->ds_bp);
1107
1108         (void) printf("\t\tdir_obj = %llu\n",
1109             (u_longlong_t)ds->ds_dir_obj);
1110         (void) printf("\t\tprev_snap_obj = %llu\n",
1111             (u_longlong_t)ds->ds_prev_snap_obj);
1112         (void) printf("\t\tprev_snap_txg = %llu\n",
1113             (u_longlong_t)ds->ds_prev_snap_txg);
1114         (void) printf("\t\tnext_snap_obj = %llu\n",
1115             (u_longlong_t)ds->ds_next_snap_obj);
1116         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1117             (u_longlong_t)ds->ds_snapnames_zapobj);
1118         (void) printf("\t\tnum_children = %llu\n",
1119             (u_longlong_t)ds->ds_num_children);
1120         (void) printf("\t\tuserrefs_obj = %llu\n",
1121             (u_longlong_t)ds->ds_userrefs_obj);
1122         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1123         (void) printf("\t\tcreation_txg = %llu\n",
1124             (u_longlong_t)ds->ds_creation_txg);
1125         (void) printf("\t\tdeadlist_obj = %llu\n",
1126             (u_longlong_t)ds->ds_deadlist_obj);
1127         (void) printf("\t\tused_bytes = %s\n", used);
1128         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1129         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1130         (void) printf("\t\tunique = %s\n", unique);
1131         (void) printf("\t\tfsid_guid = %llu\n",
1132             (u_longlong_t)ds->ds_fsid_guid);
1133         (void) printf("\t\tguid = %llu\n",
1134             (u_longlong_t)ds->ds_guid);
1135         (void) printf("\t\tflags = %llx\n",
1136             (u_longlong_t)ds->ds_flags);
1137         (void) printf("\t\tnext_clones_obj = %llu\n",
1138             (u_longlong_t)ds->ds_next_clones_obj);
1139         (void) printf("\t\tprops_obj = %llu\n",
1140             (u_longlong_t)ds->ds_props_obj);
1141         (void) printf("\t\tbp = %s\n", blkbuf);
1142 }
1143
1144 /* ARGSUSED */
1145 static int
1146 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1147 {
1148         char blkbuf[BP_SPRINTF_LEN];
1149
1150         ASSERT(bp->blk_birth != 0);
1151         sprintf_blkptr_compact(blkbuf, bp);
1152         (void) printf("\t%s\n", blkbuf);
1153         return (0);
1154 }
1155
1156 static void
1157 dump_bpobj(bpobj_t *bpo, char *name)
1158 {
1159         char bytes[32];
1160         char comp[32];
1161         char uncomp[32];
1162
1163         if (dump_opt['d'] < 3)
1164                 return;
1165
1166         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1167         if (bpo->bpo_havesubobj) {
1168                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1169                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1170                 (void) printf("\n    %s: %llu local blkptrs, %llu subobjs, "
1171                     "%s (%s/%s comp)\n",
1172                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1173                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1174                     bytes, comp, uncomp);
1175         } else {
1176                 (void) printf("\n    %s: %llu blkptrs, %s\n",
1177                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, bytes);
1178         }
1179
1180         if (dump_opt['d'] < 5)
1181                 return;
1182
1183         (void) printf("\n");
1184
1185         (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1186 }
1187
1188 static void
1189 dump_deadlist(dsl_deadlist_t *dl)
1190 {
1191         dsl_deadlist_entry_t *dle;
1192         char bytes[32];
1193         char comp[32];
1194         char uncomp[32];
1195
1196         if (dump_opt['d'] < 3)
1197                 return;
1198
1199         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1200         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1201         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1202         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1203             bytes, comp, uncomp);
1204
1205         if (dump_opt['d'] < 4)
1206                 return;
1207
1208         (void) printf("\n");
1209
1210         for (dle = avl_first(&dl->dl_tree); dle;
1211             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1212                 (void) printf("      mintxg %llu -> obj %llu\n",
1213                     (longlong_t)dle->dle_mintxg,
1214                     (longlong_t)dle->dle_bpobj.bpo_object);
1215
1216                 if (dump_opt['d'] >= 5)
1217                         dump_bpobj(&dle->dle_bpobj, "");
1218         }
1219 }
1220
1221 static avl_tree_t idx_tree;
1222 static avl_tree_t domain_tree;
1223 static boolean_t fuid_table_loaded;
1224 static boolean_t sa_loaded;
1225 sa_attr_type_t *sa_attr_table;
1226
1227 static void
1228 fuid_table_destroy(void)
1229 {
1230         if (fuid_table_loaded) {
1231                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1232                 fuid_table_loaded = B_FALSE;
1233         }
1234 }
1235
1236 /*
1237  * print uid or gid information.
1238  * For normal POSIX id just the id is printed in decimal format.
1239  * For CIFS files with FUID the fuid is printed in hex followed by
1240  * the doman-rid string.
1241  */
1242 static void
1243 print_idstr(uint64_t id, const char *id_type)
1244 {
1245         if (FUID_INDEX(id)) {
1246                 char *domain;
1247
1248                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1249                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1250                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1251         } else {
1252                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1253         }
1254
1255 }
1256
1257 static void
1258 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1259 {
1260         uint32_t uid_idx, gid_idx;
1261
1262         uid_idx = FUID_INDEX(uid);
1263         gid_idx = FUID_INDEX(gid);
1264
1265         /* Load domain table, if not already loaded */
1266         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1267                 uint64_t fuid_obj;
1268
1269                 /* first find the fuid object.  It lives in the master node */
1270                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1271                     8, 1, &fuid_obj) == 0);
1272                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1273                 (void) zfs_fuid_table_load(os, fuid_obj,
1274                     &idx_tree, &domain_tree);
1275                 fuid_table_loaded = B_TRUE;
1276         }
1277
1278         print_idstr(uid, "uid");
1279         print_idstr(gid, "gid");
1280 }
1281
1282 /*ARGSUSED*/
1283 static void
1284 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1285 {
1286         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1287         sa_handle_t *hdl;
1288         uint64_t xattr, rdev, gen;
1289         uint64_t uid, gid, mode, fsize, parent, links;
1290         uint64_t pflags;
1291         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1292         time_t z_crtime, z_atime, z_mtime, z_ctime;
1293         sa_bulk_attr_t bulk[12];
1294         int idx = 0;
1295         int error;
1296
1297         if (!sa_loaded) {
1298                 uint64_t sa_attrs = 0;
1299                 uint64_t version;
1300
1301                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1302                     8, 1, &version) == 0);
1303                 if (version >= ZPL_VERSION_SA) {
1304                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1305                             8, 1, &sa_attrs) == 0);
1306                 }
1307                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1308                     ZPL_END, &sa_attr_table)) != 0) {
1309                         (void) printf("sa_setup failed errno %d, can't "
1310                             "display znode contents\n", error);
1311                         return;
1312                 }
1313                 sa_loaded = B_TRUE;
1314         }
1315
1316         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1317                 (void) printf("Failed to get handle for SA znode\n");
1318                 return;
1319         }
1320
1321         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1322         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1323         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1324             &links, 8);
1325         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1326         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1327             &mode, 8);
1328         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1329             NULL, &parent, 8);
1330         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1331             &fsize, 8);
1332         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1333             acctm, 16);
1334         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1335             modtm, 16);
1336         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1337             crtm, 16);
1338         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1339             chgtm, 16);
1340         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1341             &pflags, 8);
1342
1343         if (sa_bulk_lookup(hdl, bulk, idx)) {
1344                 (void) sa_handle_destroy(hdl);
1345                 return;
1346         }
1347
1348         error = zfs_obj_to_path(os, object, path, sizeof (path));
1349         if (error != 0) {
1350                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1351                     (u_longlong_t)object);
1352         }
1353         if (dump_opt['d'] < 3) {
1354                 (void) printf("\t%s\n", path);
1355                 (void) sa_handle_destroy(hdl);
1356                 return;
1357         }
1358
1359         z_crtime = (time_t)crtm[0];
1360         z_atime = (time_t)acctm[0];
1361         z_mtime = (time_t)modtm[0];
1362         z_ctime = (time_t)chgtm[0];
1363
1364         (void) printf("\tpath   %s\n", path);
1365         dump_uidgid(os, uid, gid);
1366         (void) printf("\tatime  %s", ctime(&z_atime));
1367         (void) printf("\tmtime  %s", ctime(&z_mtime));
1368         (void) printf("\tctime  %s", ctime(&z_ctime));
1369         (void) printf("\tcrtime %s", ctime(&z_crtime));
1370         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1371         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1372         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1373         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1374         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1375         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1376         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1377             sizeof (uint64_t)) == 0)
1378                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1379         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1380             sizeof (uint64_t)) == 0)
1381                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1382         sa_handle_destroy(hdl);
1383 }
1384
1385 /*ARGSUSED*/
1386 static void
1387 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1388 {
1389 }
1390
1391 /*ARGSUSED*/
1392 static void
1393 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1394 {
1395 }
1396
1397 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1398         dump_none,              /* unallocated                  */
1399         dump_zap,               /* object directory             */
1400         dump_uint64,            /* object array                 */
1401         dump_none,              /* packed nvlist                */
1402         dump_packed_nvlist,     /* packed nvlist size           */
1403         dump_none,              /* bplist                       */
1404         dump_none,              /* bplist header                */
1405         dump_none,              /* SPA space map header         */
1406         dump_none,              /* SPA space map                */
1407         dump_none,              /* ZIL intent log               */
1408         dump_dnode,             /* DMU dnode                    */
1409         dump_dmu_objset,        /* DMU objset                   */
1410         dump_dsl_dir,           /* DSL directory                */
1411         dump_zap,               /* DSL directory child map      */
1412         dump_zap,               /* DSL dataset snap map         */
1413         dump_zap,               /* DSL props                    */
1414         dump_dsl_dataset,       /* DSL dataset                  */
1415         dump_znode,             /* ZFS znode                    */
1416         dump_acl,               /* ZFS V0 ACL                   */
1417         dump_uint8,             /* ZFS plain file               */
1418         dump_zpldir,            /* ZFS directory                */
1419         dump_zap,               /* ZFS master node              */
1420         dump_zap,               /* ZFS delete queue             */
1421         dump_uint8,             /* zvol object                  */
1422         dump_zap,               /* zvol prop                    */
1423         dump_uint8,             /* other uint8[]                */
1424         dump_uint64,            /* other uint64[]               */
1425         dump_zap,               /* other ZAP                    */
1426         dump_zap,               /* persistent error log         */
1427         dump_uint8,             /* SPA history                  */
1428         dump_uint64,            /* SPA history offsets          */
1429         dump_zap,               /* Pool properties              */
1430         dump_zap,               /* DSL permissions              */
1431         dump_acl,               /* ZFS ACL                      */
1432         dump_uint8,             /* ZFS SYSACL                   */
1433         dump_none,              /* FUID nvlist                  */
1434         dump_packed_nvlist,     /* FUID nvlist size             */
1435         dump_zap,               /* DSL dataset next clones      */
1436         dump_zap,               /* DSL scrub queue              */
1437         dump_zap,               /* ZFS user/group used          */
1438         dump_zap,               /* ZFS user/group quota         */
1439         dump_zap,               /* snapshot refcount tags       */
1440         dump_ddt_zap,           /* DDT ZAP object               */
1441         dump_zap,               /* DDT statistics               */
1442         dump_znode,             /* SA object                    */
1443         dump_zap,               /* SA Master Node               */
1444         dump_sa_attrs,          /* SA attribute registration    */
1445         dump_sa_layouts,        /* SA attribute layouts         */
1446         dump_zap,               /* DSL scrub translations       */
1447         dump_none,              /* fake dedup BP                */
1448         dump_zap,               /* deadlist                     */
1449         dump_none,              /* deadlist hdr                 */
1450         dump_zap,               /* dsl clones                   */
1451         dump_none,              /* bpobj subobjs                */
1452         dump_unknown,           /* Unknown type, must be last   */
1453 };
1454
1455 static void
1456 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1457 {
1458         dmu_buf_t *db = NULL;
1459         dmu_object_info_t doi;
1460         dnode_t *dn;
1461         void *bonus = NULL;
1462         size_t bsize = 0;
1463         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1464         char bonus_size[32];
1465         char aux[50];
1466         int error;
1467
1468         if (*print_header) {
1469                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1470                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1471                     "%full", "type");
1472                 *print_header = 0;
1473         }
1474
1475         if (object == 0) {
1476                 dn = DMU_META_DNODE(os);
1477         } else {
1478                 error = dmu_bonus_hold(os, object, FTAG, &db);
1479                 if (error)
1480                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1481                             object, error);
1482                 bonus = db->db_data;
1483                 bsize = db->db_size;
1484                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1485         }
1486         dmu_object_info_from_dnode(dn, &doi);
1487
1488         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1489         zdb_nicenum(doi.doi_data_block_size, dblk);
1490         zdb_nicenum(doi.doi_max_offset, lsize);
1491         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1492         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1493         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1494             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1495             doi.doi_max_offset);
1496
1497         aux[0] = '\0';
1498
1499         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1500                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1501                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1502         }
1503
1504         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1505                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1506                     ZDB_COMPRESS_NAME(doi.doi_compress));
1507         }
1508
1509         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1510             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1511             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1512
1513         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1514                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1515                     "", "", "", "", "", bonus_size, "bonus",
1516                     ZDB_OT_NAME(doi.doi_bonus_type));
1517         }
1518
1519         if (verbosity >= 4) {
1520                 (void) printf("\tdnode flags: %s%s%s\n",
1521                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1522                     "USED_BYTES " : "",
1523                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1524                     "USERUSED_ACCOUNTED " : "",
1525                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1526                     "SPILL_BLKPTR" : "");
1527                 (void) printf("\tdnode maxblkid: %llu\n",
1528                     (longlong_t)dn->dn_phys->dn_maxblkid);
1529
1530                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1531                     bonus, bsize);
1532                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1533                 *print_header = 1;
1534         }
1535
1536         if (verbosity >= 5)
1537                 dump_indirect(dn);
1538
1539         if (verbosity >= 5) {
1540                 /*
1541                  * Report the list of segments that comprise the object.
1542                  */
1543                 uint64_t start = 0;
1544                 uint64_t end;
1545                 uint64_t blkfill = 1;
1546                 int minlvl = 1;
1547
1548                 if (dn->dn_type == DMU_OT_DNODE) {
1549                         minlvl = 0;
1550                         blkfill = DNODES_PER_BLOCK;
1551                 }
1552
1553                 for (;;) {
1554                         char segsize[32];
1555                         error = dnode_next_offset(dn,
1556                             0, &start, minlvl, blkfill, 0);
1557                         if (error)
1558                                 break;
1559                         end = start;
1560                         error = dnode_next_offset(dn,
1561                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1562                         zdb_nicenum(end - start, segsize);
1563                         (void) printf("\t\tsegment [%016llx, %016llx)"
1564                             " size %5s\n", (u_longlong_t)start,
1565                             (u_longlong_t)end, segsize);
1566                         if (error)
1567                                 break;
1568                         start = end;
1569                 }
1570         }
1571
1572         if (db != NULL)
1573                 dmu_buf_rele(db, FTAG);
1574 }
1575
1576 static char *objset_types[DMU_OST_NUMTYPES] = {
1577         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1578
1579 static void
1580 dump_dir(objset_t *os)
1581 {
1582         dmu_objset_stats_t dds;
1583         uint64_t object, object_count;
1584         uint64_t refdbytes, usedobjs, scratch;
1585         char numbuf[32];
1586         char blkbuf[BP_SPRINTF_LEN + 20];
1587         char osname[MAXNAMELEN];
1588         char *type = "UNKNOWN";
1589         int verbosity = dump_opt['d'];
1590         int print_header = 1;
1591         int i, error;
1592
1593         dmu_objset_fast_stat(os, &dds);
1594
1595         if (dds.dds_type < DMU_OST_NUMTYPES)
1596                 type = objset_types[dds.dds_type];
1597
1598         if (dds.dds_type == DMU_OST_META) {
1599                 dds.dds_creation_txg = TXG_INITIAL;
1600                 usedobjs = os->os_rootbp->blk_fill;
1601                 refdbytes = os->os_spa->spa_dsl_pool->
1602                     dp_mos_dir->dd_phys->dd_used_bytes;
1603         } else {
1604                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1605         }
1606
1607         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1608
1609         zdb_nicenum(refdbytes, numbuf);
1610
1611         if (verbosity >= 4) {
1612                 (void) sprintf(blkbuf, ", rootbp ");
1613                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1614         } else {
1615                 blkbuf[0] = '\0';
1616         }
1617
1618         dmu_objset_name(os, osname);
1619
1620         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1621             "%s, %llu objects%s\n",
1622             osname, type, (u_longlong_t)dmu_objset_id(os),
1623             (u_longlong_t)dds.dds_creation_txg,
1624             numbuf, (u_longlong_t)usedobjs, blkbuf);
1625
1626         if (zopt_objects != 0) {
1627                 for (i = 0; i < zopt_objects; i++)
1628                         dump_object(os, zopt_object[i], verbosity,
1629                             &print_header);
1630                 (void) printf("\n");
1631                 return;
1632         }
1633
1634         if (dump_opt['i'] != 0 || verbosity >= 2)
1635                 dump_intent_log(dmu_objset_zil(os));
1636
1637         if (dmu_objset_ds(os) != NULL)
1638                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1639
1640         if (verbosity < 2)
1641                 return;
1642
1643         if (os->os_rootbp->blk_birth == 0)
1644                 return;
1645
1646         dump_object(os, 0, verbosity, &print_header);
1647         object_count = 0;
1648         if (DMU_USERUSED_DNODE(os) != NULL &&
1649             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1650                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1651                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1652         }
1653
1654         object = 0;
1655         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1656                 dump_object(os, object, verbosity, &print_header);
1657                 object_count++;
1658         }
1659
1660         ASSERT3U(object_count, ==, usedobjs);
1661
1662         (void) printf("\n");
1663
1664         if (error != ESRCH) {
1665                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1666                 abort();
1667         }
1668 }
1669
1670 static void
1671 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1672 {
1673         time_t timestamp = ub->ub_timestamp;
1674
1675         (void) printf("%s", header ? header : "");
1676         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1677         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1678         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1679         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1680         (void) printf("\ttimestamp = %llu UTC = %s",
1681             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1682         if (dump_opt['u'] >= 3) {
1683                 char blkbuf[BP_SPRINTF_LEN];
1684                 sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1685                 (void) printf("\trootbp = %s\n", blkbuf);
1686         }
1687         (void) printf("%s", footer ? footer : "");
1688 }
1689
1690 static void
1691 dump_config(spa_t *spa)
1692 {
1693         dmu_buf_t *db;
1694         size_t nvsize = 0;
1695         int error = 0;
1696
1697
1698         error = dmu_bonus_hold(spa->spa_meta_objset,
1699             spa->spa_config_object, FTAG, &db);
1700
1701         if (error == 0) {
1702                 nvsize = *(uint64_t *)db->db_data;
1703                 dmu_buf_rele(db, FTAG);
1704
1705                 (void) printf("\nMOS Configuration:\n");
1706                 dump_packed_nvlist(spa->spa_meta_objset,
1707                     spa->spa_config_object, (void *)&nvsize, 1);
1708         } else {
1709                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1710                     (u_longlong_t)spa->spa_config_object, error);
1711         }
1712 }
1713
1714 static void
1715 dump_cachefile(const char *cachefile)
1716 {
1717         int fd;
1718         struct stat64 statbuf;
1719         char *buf;
1720         nvlist_t *config;
1721
1722         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1723                 (void) printf("cannot open '%s': %s\n", cachefile,
1724                     strerror(errno));
1725                 exit(1);
1726         }
1727
1728         if (fstat64(fd, &statbuf) != 0) {
1729                 (void) printf("failed to stat '%s': %s\n", cachefile,
1730                     strerror(errno));
1731                 exit(1);
1732         }
1733
1734         if ((buf = malloc(statbuf.st_size)) == NULL) {
1735                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1736                     (u_longlong_t)statbuf.st_size);
1737                 exit(1);
1738         }
1739
1740         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1741                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1742                     (u_longlong_t)statbuf.st_size);
1743                 exit(1);
1744         }
1745
1746         (void) close(fd);
1747
1748         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1749                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1750                 exit(1);
1751         }
1752
1753         free(buf);
1754
1755         dump_nvlist(config, 0);
1756
1757         nvlist_free(config);
1758 }
1759
1760 #define ZDB_MAX_UB_HEADER_SIZE 32
1761
1762 static void
1763 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1764 {
1765         vdev_t vd;
1766         vdev_t *vdp = &vd;
1767         char header[ZDB_MAX_UB_HEADER_SIZE];
1768         int i;
1769
1770         vd.vdev_ashift = ashift;
1771         vdp->vdev_top = vdp;
1772
1773         for (i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1774                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1775                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1776
1777                 if (uberblock_verify(ub))
1778                         continue;
1779                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1780                     "Uberblock[%d]\n", i);
1781                 dump_uberblock(ub, header, "");
1782         }
1783 }
1784
1785 static void
1786 dump_label(const char *dev)
1787 {
1788         int fd;
1789         vdev_label_t label;
1790         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1791         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1792         struct stat64 statbuf;
1793         uint64_t psize, ashift;
1794         int len = strlen(dev) + 1;
1795         int l;
1796
1797         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1798                 len++;
1799                 path = malloc(len);
1800                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1801         } else {
1802                 path = strdup(dev);
1803         }
1804
1805         if ((fd = open64(path, O_RDONLY)) < 0) {
1806                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
1807                 free(path);
1808                 exit(1);
1809         }
1810
1811         if (fstat64_blk(fd, &statbuf) != 0) {
1812                 (void) printf("failed to stat '%s': %s\n", path,
1813                     strerror(errno));
1814                 free(path);
1815                 (void) close(fd);
1816                 exit(1);
1817         }
1818
1819         psize = statbuf.st_size;
1820         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1821
1822         for (l = 0; l < VDEV_LABELS; l++) {
1823                 nvlist_t *config = NULL;
1824
1825                 (void) printf("--------------------------------------------\n");
1826                 (void) printf("LABEL %d\n", l);
1827                 (void) printf("--------------------------------------------\n");
1828
1829                 if (pread64(fd, &label, sizeof (label),
1830                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1831                         (void) printf("failed to read label %d\n", l);
1832                         continue;
1833                 }
1834
1835                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1836                         (void) printf("failed to unpack label %d\n", l);
1837                         ashift = SPA_MINBLOCKSHIFT;
1838                 } else {
1839                         nvlist_t *vdev_tree = NULL;
1840
1841                         dump_nvlist(config, 4);
1842                         if ((nvlist_lookup_nvlist(config,
1843                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1844                             (nvlist_lookup_uint64(vdev_tree,
1845                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1846                                 ashift = SPA_MINBLOCKSHIFT;
1847                         nvlist_free(config);
1848                 }
1849                 if (dump_opt['u'])
1850                         dump_label_uberblocks(&label, ashift);
1851         }
1852
1853         free(path);
1854         (void) close(fd);
1855 }
1856
1857 /*ARGSUSED*/
1858 static int
1859 dump_one_dir(const char *dsname, void *arg)
1860 {
1861         int error;
1862         objset_t *os;
1863
1864         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1865         if (error) {
1866                 (void) printf("Could not open %s, error %d\n", dsname, error);
1867                 return (0);
1868         }
1869         dump_dir(os);
1870         dmu_objset_disown(os, FTAG);
1871         fuid_table_destroy();
1872         sa_loaded = B_FALSE;
1873         return (0);
1874 }
1875
1876 /*
1877  * Block statistics.
1878  */
1879 typedef struct zdb_blkstats {
1880         uint64_t        zb_asize;
1881         uint64_t        zb_lsize;
1882         uint64_t        zb_psize;
1883         uint64_t        zb_count;
1884 } zdb_blkstats_t;
1885
1886 /*
1887  * Extended object types to report deferred frees and dedup auto-ditto blocks.
1888  */
1889 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
1890 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
1891 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 2)
1892
1893 static char *zdb_ot_extname[] = {
1894         "deferred free",
1895         "dedup ditto",
1896         "Total",
1897 };
1898
1899 #define ZB_TOTAL        DN_MAX_LEVELS
1900
1901 typedef struct zdb_cb {
1902         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1903         uint64_t        zcb_dedup_asize;
1904         uint64_t        zcb_dedup_blocks;
1905         uint64_t        zcb_errors[256];
1906         int             zcb_readfails;
1907         int             zcb_haderrors;
1908         spa_t           *zcb_spa;
1909 } zdb_cb_t;
1910
1911 static void
1912 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
1913     dmu_object_type_t type)
1914 {
1915         uint64_t refcnt = 0;
1916         int i;
1917
1918         ASSERT(type < ZDB_OT_TOTAL);
1919
1920         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1921                 return;
1922
1923         for (i = 0; i < 4; i++) {
1924                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1925                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
1926                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1927
1928                 zb->zb_asize += BP_GET_ASIZE(bp);
1929                 zb->zb_lsize += BP_GET_LSIZE(bp);
1930                 zb->zb_psize += BP_GET_PSIZE(bp);
1931                 zb->zb_count++;
1932         }
1933
1934         if (dump_opt['L'])
1935                 return;
1936
1937         if (BP_GET_DEDUP(bp)) {
1938                 ddt_t *ddt;
1939                 ddt_entry_t *dde;
1940
1941                 ddt = ddt_select(zcb->zcb_spa, bp);
1942                 ddt_enter(ddt);
1943                 dde = ddt_lookup(ddt, bp, B_FALSE);
1944
1945                 if (dde == NULL) {
1946                         refcnt = 0;
1947                 } else {
1948                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
1949                         ddt_phys_decref(ddp);
1950                         refcnt = ddp->ddp_refcnt;
1951                         if (ddt_phys_total_refcnt(dde) == 0)
1952                                 ddt_remove(ddt, dde);
1953                 }
1954                 ddt_exit(ddt);
1955         }
1956
1957         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
1958             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
1959             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
1960 }
1961
1962 /* ARGSUSED */
1963 static int
1964 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
1965     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
1966 {
1967         zdb_cb_t *zcb = arg;
1968         char blkbuf[BP_SPRINTF_LEN];
1969         dmu_object_type_t type;
1970         boolean_t is_metadata;
1971
1972         if (bp == NULL)
1973                 return (0);
1974
1975         type = BP_GET_TYPE(bp);
1976
1977         zdb_count_block(zcb, zilog, bp, type);
1978
1979         is_metadata = (BP_GET_LEVEL(bp) != 0 || dmu_ot[type].ot_metadata);
1980
1981         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
1982                 int ioerr;
1983                 size_t size = BP_GET_PSIZE(bp);
1984                 void *data = malloc(size);
1985                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
1986
1987                 /* If it's an intent log block, failure is expected. */
1988                 if (zb->zb_level == ZB_ZIL_LEVEL)
1989                         flags |= ZIO_FLAG_SPECULATIVE;
1990
1991                 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1992                     NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb));
1993
1994                 free(data);
1995
1996                 if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) {
1997                         zcb->zcb_haderrors = 1;
1998                         zcb->zcb_errors[ioerr]++;
1999
2000                         if (dump_opt['b'] >= 2)
2001                                 sprintf_blkptr(blkbuf, bp);
2002                         else
2003                                 blkbuf[0] = '\0';
2004
2005                         (void) printf("zdb_blkptr_cb: "
2006                             "Got error %d reading "
2007                             "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2008                             ioerr,
2009                             (u_longlong_t)zb->zb_objset,
2010                             (u_longlong_t)zb->zb_object,
2011                             (u_longlong_t)zb->zb_level,
2012                             (u_longlong_t)zb->zb_blkid,
2013                             blkbuf);
2014                 }
2015         }
2016
2017         zcb->zcb_readfails = 0;
2018
2019         if (dump_opt['b'] >= 4) {
2020                 sprintf_blkptr(blkbuf, bp);
2021                 (void) printf("objset %llu object %llu "
2022                     "level %lld offset 0x%llx %s\n",
2023                     (u_longlong_t)zb->zb_objset,
2024                     (u_longlong_t)zb->zb_object,
2025                     (longlong_t)zb->zb_level,
2026                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2027                     blkbuf);
2028         }
2029
2030         return (0);
2031 }
2032
2033 static void
2034 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2035 {
2036         vdev_t *vd = sm->sm_ppd;
2037
2038         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2039             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2040 }
2041
2042 /* ARGSUSED */
2043 static void
2044 zdb_space_map_load(space_map_t *sm)
2045 {
2046 }
2047
2048 static void
2049 zdb_space_map_unload(space_map_t *sm)
2050 {
2051         space_map_vacate(sm, zdb_leak, sm);
2052 }
2053
2054 /* ARGSUSED */
2055 static void
2056 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2057 {
2058 }
2059
2060 static space_map_ops_t zdb_space_map_ops = {
2061         zdb_space_map_load,
2062         zdb_space_map_unload,
2063         NULL,   /* alloc */
2064         zdb_space_map_claim,
2065         NULL,   /* free */
2066         NULL    /* maxsize */
2067 };
2068
2069 static void
2070 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2071 {
2072         ddt_bookmark_t ddb = { 0 };
2073         ddt_entry_t dde;
2074         int error;
2075         int p;
2076
2077         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2078                 blkptr_t blk;
2079                 ddt_phys_t *ddp = dde.dde_phys;
2080
2081                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2082                         return;
2083
2084                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2085
2086                 for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2087                         if (ddp->ddp_phys_birth == 0)
2088                                 continue;
2089                         ddt_bp_create(ddb.ddb_checksum,
2090                             &dde.dde_key, ddp, &blk);
2091                         if (p == DDT_PHYS_DITTO) {
2092                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2093                         } else {
2094                                 zcb->zcb_dedup_asize +=
2095                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2096                                 zcb->zcb_dedup_blocks++;
2097                         }
2098                 }
2099                 if (!dump_opt['L']) {
2100                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2101                         ddt_enter(ddt);
2102                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2103                         ddt_exit(ddt);
2104                 }
2105         }
2106
2107         ASSERT(error == ENOENT);
2108 }
2109
2110 static void
2111 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2112 {
2113         zcb->zcb_spa = spa;
2114         int c, m;
2115
2116         if (!dump_opt['L']) {
2117                 vdev_t *rvd = spa->spa_root_vdev;
2118                 for (c = 0; c < rvd->vdev_children; c++) {
2119                         vdev_t *vd = rvd->vdev_child[c];
2120                         for (m = 0; m < vd->vdev_ms_count; m++) {
2121                                 metaslab_t *msp = vd->vdev_ms[m];
2122                                 mutex_enter(&msp->ms_lock);
2123                                 space_map_unload(&msp->ms_map);
2124                                 VERIFY(space_map_load(&msp->ms_map,
2125                                     &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2126                                     spa->spa_meta_objset) == 0);
2127                                 msp->ms_map.sm_ppd = vd;
2128                                 mutex_exit(&msp->ms_lock);
2129                         }
2130                 }
2131         }
2132
2133         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2134
2135         zdb_ddt_leak_init(spa, zcb);
2136
2137         spa_config_exit(spa, SCL_CONFIG, FTAG);
2138 }
2139
2140 static void
2141 zdb_leak_fini(spa_t *spa)
2142 {
2143         int c, m;
2144
2145         if (!dump_opt['L']) {
2146                 vdev_t *rvd = spa->spa_root_vdev;
2147                 for (c = 0; c < rvd->vdev_children; c++) {
2148                         vdev_t *vd = rvd->vdev_child[c];
2149                         for (m = 0; m < vd->vdev_ms_count; m++) {
2150                                 metaslab_t *msp = vd->vdev_ms[m];
2151                                 mutex_enter(&msp->ms_lock);
2152                                 space_map_unload(&msp->ms_map);
2153                                 mutex_exit(&msp->ms_lock);
2154                         }
2155                 }
2156         }
2157 }
2158
2159 /* ARGSUSED */
2160 static int
2161 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2162 {
2163         zdb_cb_t *zcb = arg;
2164
2165         if (dump_opt['b'] >= 4) {
2166                 char blkbuf[BP_SPRINTF_LEN];
2167                 sprintf_blkptr(blkbuf, bp);
2168                 (void) printf("[%s] %s\n",
2169                     "deferred free", blkbuf);
2170         }
2171         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2172         return (0);
2173 }
2174
2175 static int
2176 dump_block_stats(spa_t *spa)
2177 {
2178         zdb_cb_t zcb;
2179         zdb_blkstats_t *zb, *tzb;
2180         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2181         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2182         int leaks = 0;
2183         int e;
2184
2185         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
2186             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2187             (dump_opt['c'] == 1) ? "metadata " : "",
2188             dump_opt['c'] ? "checksums " : "",
2189             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2190             !dump_opt['L'] ? "nothing leaked " : "");
2191
2192         /*
2193          * Load all space maps as SM_ALLOC maps, then traverse the pool
2194          * claiming each block we discover.  If the pool is perfectly
2195          * consistent, the space maps will be empty when we're done.
2196          * Anything left over is a leak; any block we can't claim (because
2197          * it's not part of any space map) is a double allocation,
2198          * reference to a freed block, or an unclaimed log block.
2199          */
2200         bzero(&zcb, sizeof(zdb_cb_t));
2201         zdb_leak_init(spa, &zcb);
2202
2203         /*
2204          * If there's a deferred-free bplist, process that first.
2205          */
2206         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2207             count_block_cb, &zcb, NULL);
2208         (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2209             count_block_cb, &zcb, NULL);
2210
2211         if (dump_opt['c'] > 1)
2212                 flags |= TRAVERSE_PREFETCH_DATA;
2213
2214         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2215
2216         if (zcb.zcb_haderrors) {
2217                 (void) printf("\nError counts:\n\n");
2218                 (void) printf("\t%5s  %s\n", "errno", "count");
2219                 for (e = 0; e < 256; e++) {
2220                         if (zcb.zcb_errors[e] != 0) {
2221                                 (void) printf("\t%5d  %llu\n",
2222                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2223                         }
2224                 }
2225         }
2226
2227         /*
2228          * Report any leaked segments.
2229          */
2230         zdb_leak_fini(spa);
2231
2232         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2233
2234         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2235         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2236
2237         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2238         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2239
2240         if (total_found == total_alloc) {
2241                 if (!dump_opt['L'])
2242                         (void) printf("\n\tNo leaks (block sum matches space"
2243                             " maps exactly)\n");
2244         } else {
2245                 (void) printf("block traversal size %llu != alloc %llu "
2246                     "(%s %lld)\n",
2247                     (u_longlong_t)total_found,
2248                     (u_longlong_t)total_alloc,
2249                     (dump_opt['L']) ? "unreachable" : "leaked",
2250                     (longlong_t)(total_alloc - total_found));
2251                 leaks = 1;
2252         }
2253
2254         if (tzb->zb_count == 0)
2255                 return (2);
2256
2257         (void) printf("\n");
2258         (void) printf("\tbp count:      %10llu\n",
2259             (u_longlong_t)tzb->zb_count);
2260         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2261             (u_longlong_t)tzb->zb_lsize,
2262             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2263         (void) printf("\tbp physical:   %10llu      avg:"
2264             " %6llu     compression: %6.2f\n",
2265             (u_longlong_t)tzb->zb_psize,
2266             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2267             (double)tzb->zb_lsize / tzb->zb_psize);
2268         (void) printf("\tbp allocated:  %10llu      avg:"
2269             " %6llu     compression: %6.2f\n",
2270             (u_longlong_t)tzb->zb_asize,
2271             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2272             (double)tzb->zb_lsize / tzb->zb_asize);
2273         (void) printf("\tbp deduped:    %10llu    ref>1:"
2274             " %6llu   deduplication: %6.2f\n",
2275             (u_longlong_t)zcb.zcb_dedup_asize,
2276             (u_longlong_t)zcb.zcb_dedup_blocks,
2277             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2278         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2279             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2280
2281         if (dump_opt['b'] >= 2) {
2282                 int l, t, level;
2283                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2284                     "\t  avg\t comp\t%%Total\tType\n");
2285
2286                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2287                         char csize[32], lsize[32], psize[32], asize[32];
2288                         char avg[32];
2289                         char *typename;
2290
2291                         if (t < DMU_OT_NUMTYPES)
2292                                 typename = dmu_ot[t].ot_name;
2293                         else
2294                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2295
2296                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2297                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2298                                     "\t%5s\t%5s\t%6s\t%s\n",
2299                                     "-",
2300                                     "-",
2301                                     "-",
2302                                     "-",
2303                                     "-",
2304                                     "-",
2305                                     "-",
2306                                     typename);
2307                                 continue;
2308                         }
2309
2310                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2311                                 level = (l == -1 ? ZB_TOTAL : l);
2312                                 zb = &zcb.zcb_type[level][t];
2313
2314                                 if (zb->zb_asize == 0)
2315                                         continue;
2316
2317                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2318                                         continue;
2319
2320                                 if (level == 0 && zb->zb_asize ==
2321                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2322                                         continue;
2323
2324                                 zdb_nicenum(zb->zb_count, csize);
2325                                 zdb_nicenum(zb->zb_lsize, lsize);
2326                                 zdb_nicenum(zb->zb_psize, psize);
2327                                 zdb_nicenum(zb->zb_asize, asize);
2328                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2329
2330                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2331                                     "\t%5.2f\t%6.2f\t",
2332                                     csize, lsize, psize, asize, avg,
2333                                     (double)zb->zb_lsize / zb->zb_psize,
2334                                     100.0 * zb->zb_asize / tzb->zb_asize);
2335
2336                                 if (level == ZB_TOTAL)
2337                                         (void) printf("%s\n", typename);
2338                                 else
2339                                         (void) printf("    L%d %s\n",
2340                                             level, typename);
2341                         }
2342                 }
2343         }
2344
2345         (void) printf("\n");
2346
2347         if (leaks)
2348                 return (2);
2349
2350         if (zcb.zcb_haderrors)
2351                 return (3);
2352
2353         return (0);
2354 }
2355
2356 typedef struct zdb_ddt_entry {
2357         ddt_key_t       zdde_key;
2358         uint64_t        zdde_ref_blocks;
2359         uint64_t        zdde_ref_lsize;
2360         uint64_t        zdde_ref_psize;
2361         uint64_t        zdde_ref_dsize;
2362         avl_node_t      zdde_node;
2363 } zdb_ddt_entry_t;
2364
2365 /* ARGSUSED */
2366 static int
2367 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2368     arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2369 {
2370         avl_tree_t *t = arg;
2371         avl_index_t where;
2372         zdb_ddt_entry_t *zdde, zdde_search;
2373
2374         if (bp == NULL)
2375                 return (0);
2376
2377         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2378                 (void) printf("traversing objset %llu, %llu objects, "
2379                     "%lu blocks so far\n",
2380                     (u_longlong_t)zb->zb_objset,
2381                     (u_longlong_t)bp->blk_fill,
2382                     avl_numnodes(t));
2383         }
2384
2385         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2386             BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata)
2387                 return (0);
2388
2389         ddt_key_fill(&zdde_search.zdde_key, bp);
2390
2391         zdde = avl_find(t, &zdde_search, &where);
2392
2393         if (zdde == NULL) {
2394                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2395                 zdde->zdde_key = zdde_search.zdde_key;
2396                 avl_insert(t, zdde, where);
2397         }
2398
2399         zdde->zdde_ref_blocks += 1;
2400         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2401         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2402         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2403
2404         return (0);
2405 }
2406
2407 static void
2408 dump_simulated_ddt(spa_t *spa)
2409 {
2410         avl_tree_t t;
2411         void *cookie = NULL;
2412         zdb_ddt_entry_t *zdde;
2413         ddt_histogram_t ddh_total;
2414         ddt_stat_t dds_total;
2415
2416         bzero(&ddh_total, sizeof (ddt_histogram_t));
2417         bzero(&dds_total, sizeof (ddt_stat_t));
2418
2419         avl_create(&t, ddt_entry_compare,
2420             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2421
2422         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2423
2424         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2425             zdb_ddt_add_cb, &t);
2426
2427         spa_config_exit(spa, SCL_CONFIG, FTAG);
2428
2429         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2430                 ddt_stat_t dds;
2431                 uint64_t refcnt = zdde->zdde_ref_blocks;
2432                 ASSERT(refcnt != 0);
2433
2434                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2435                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2436                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2437                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2438
2439                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2440                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2441                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2442                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2443
2444                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2445
2446                 umem_free(zdde, sizeof (*zdde));
2447         }
2448
2449         avl_destroy(&t);
2450
2451         ddt_histogram_stat(&dds_total, &ddh_total);
2452
2453         (void) printf("Simulated DDT histogram:\n");
2454
2455         zpool_dump_ddt(&dds_total, &ddh_total);
2456
2457         dump_dedup_ratio(&dds_total);
2458 }
2459
2460 static void
2461 dump_zpool(spa_t *spa)
2462 {
2463         dsl_pool_t *dp = spa_get_dsl(spa);
2464         int rc = 0;
2465
2466         if (dump_opt['S']) {
2467                 dump_simulated_ddt(spa);
2468                 return;
2469         }
2470
2471         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2472                 (void) printf("\nCached configuration:\n");
2473                 dump_nvlist(spa->spa_config, 8);
2474         }
2475
2476         if (dump_opt['C'])
2477                 dump_config(spa);
2478
2479         if (dump_opt['u'])
2480                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2481
2482         if (dump_opt['D'])
2483                 dump_all_ddts(spa);
2484
2485         if (dump_opt['d'] > 2 || dump_opt['m'])
2486                 dump_metaslabs(spa);
2487
2488         if (dump_opt['d'] || dump_opt['i']) {
2489                 dump_dir(dp->dp_meta_objset);
2490                 if (dump_opt['d'] >= 3) {
2491                         dump_bpobj(&spa->spa_deferred_bpobj, "Deferred frees");
2492                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2493                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2494                                     "Pool frees");
2495                         }
2496                         dump_dtl(spa->spa_root_vdev, 0);
2497                 }
2498                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2499                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2500         }
2501         if (dump_opt['b'] || dump_opt['c'])
2502                 rc = dump_block_stats(spa);
2503
2504         if (dump_opt['s'])
2505                 show_pool_stats(spa);
2506
2507         if (dump_opt['h'])
2508                 dump_history(spa);
2509
2510         if (rc != 0)
2511                 exit(rc);
2512 }
2513
2514 #define ZDB_FLAG_CHECKSUM       0x0001
2515 #define ZDB_FLAG_DECOMPRESS     0x0002
2516 #define ZDB_FLAG_BSWAP          0x0004
2517 #define ZDB_FLAG_GBH            0x0008
2518 #define ZDB_FLAG_INDIRECT       0x0010
2519 #define ZDB_FLAG_PHYS           0x0020
2520 #define ZDB_FLAG_RAW            0x0040
2521 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2522
2523 int flagbits[256];
2524
2525 static void
2526 zdb_print_blkptr(blkptr_t *bp, int flags)
2527 {
2528         char blkbuf[BP_SPRINTF_LEN];
2529
2530         if (flags & ZDB_FLAG_BSWAP)
2531                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2532
2533         sprintf_blkptr(blkbuf, bp);
2534         (void) printf("%s\n", blkbuf);
2535 }
2536
2537 static void
2538 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2539 {
2540         int i;
2541
2542         for (i = 0; i < nbps; i++)
2543                 zdb_print_blkptr(&bp[i], flags);
2544 }
2545
2546 static void
2547 zdb_dump_gbh(void *buf, int flags)
2548 {
2549         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2550 }
2551
2552 static void
2553 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2554 {
2555         if (flags & ZDB_FLAG_BSWAP)
2556                 byteswap_uint64_array(buf, size);
2557         VERIFY(write(fileno(stdout), buf, size) == size);
2558 }
2559
2560 static void
2561 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2562 {
2563         uint64_t *d = (uint64_t *)buf;
2564         int nwords = size / sizeof (uint64_t);
2565         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2566         int i, j;
2567         char *hdr, *c;
2568
2569
2570         if (do_bswap)
2571                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2572         else
2573                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2574
2575         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2576
2577         for (i = 0; i < nwords; i += 2) {
2578                 (void) printf("%06llx:  %016llx  %016llx  ",
2579                     (u_longlong_t)(i * sizeof (uint64_t)),
2580                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2581                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2582
2583                 c = (char *)&d[i];
2584                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2585                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2586                 (void) printf("\n");
2587         }
2588 }
2589
2590 /*
2591  * There are two acceptable formats:
2592  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2593  *      child[.child]*    - For example: 0.1.1
2594  *
2595  * The second form can be used to specify arbitrary vdevs anywhere
2596  * in the heirarchy.  For example, in a pool with a mirror of
2597  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2598  */
2599 static vdev_t *
2600 zdb_vdev_lookup(vdev_t *vdev, char *path)
2601 {
2602         char *s, *p, *q;
2603         int i;
2604
2605         if (vdev == NULL)
2606                 return (NULL);
2607
2608         /* First, assume the x.x.x.x format */
2609         i = (int)strtoul(path, &s, 10);
2610         if (s == path || (s && *s != '.' && *s != '\0'))
2611                 goto name;
2612         if (i < 0 || i >= vdev->vdev_children)
2613                 return (NULL);
2614
2615         vdev = vdev->vdev_child[i];
2616         if (*s == '\0')
2617                 return (vdev);
2618         return (zdb_vdev_lookup(vdev, s+1));
2619
2620 name:
2621         for (i = 0; i < vdev->vdev_children; i++) {
2622                 vdev_t *vc = vdev->vdev_child[i];
2623
2624                 if (vc->vdev_path == NULL) {
2625                         vc = zdb_vdev_lookup(vc, path);
2626                         if (vc == NULL)
2627                                 continue;
2628                         else
2629                                 return (vc);
2630                 }
2631
2632                 p = strrchr(vc->vdev_path, '/');
2633                 p = p ? p + 1 : vc->vdev_path;
2634                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2635
2636                 if (strcmp(vc->vdev_path, path) == 0)
2637                         return (vc);
2638                 if (strcmp(p, path) == 0)
2639                         return (vc);
2640                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2641                         return (vc);
2642         }
2643
2644         return (NULL);
2645 }
2646
2647 /*
2648  * Read a block from a pool and print it out.  The syntax of the
2649  * block descriptor is:
2650  *
2651  *      pool:vdev_specifier:offset:size[:flags]
2652  *
2653  *      pool           - The name of the pool you wish to read from
2654  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2655  *      offset         - offset, in hex, in bytes
2656  *      size           - Amount of data to read, in hex, in bytes
2657  *      flags          - A string of characters specifying options
2658  *               b: Decode a blkptr at given offset within block
2659  *              *c: Calculate and display checksums
2660  *               d: Decompress data before dumping
2661  *               e: Byteswap data before dumping
2662  *               g: Display data as a gang block header
2663  *               i: Display as an indirect block
2664  *               p: Do I/O to physical offset
2665  *               r: Dump raw data to stdout
2666  *
2667  *              * = not yet implemented
2668  */
2669 static void
2670 zdb_read_block(char *thing, spa_t *spa)
2671 {
2672         blkptr_t blk, *bp = &blk;
2673         dva_t *dva = bp->blk_dva;
2674         int flags = 0;
2675         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2676         zio_t *zio;
2677         vdev_t *vd;
2678         void *pbuf, *lbuf, *buf;
2679         char *s, *p, *dup, *vdev, *flagstr;
2680         int i, error;
2681
2682         dup = strdup(thing);
2683         s = strtok(dup, ":");
2684         vdev = s ? s : "";
2685         s = strtok(NULL, ":");
2686         offset = strtoull(s ? s : "", NULL, 16);
2687         s = strtok(NULL, ":");
2688         size = strtoull(s ? s : "", NULL, 16);
2689         s = strtok(NULL, ":");
2690         flagstr = s ? s : "";
2691
2692         s = NULL;
2693         if (size == 0)
2694                 s = "size must not be zero";
2695         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2696                 s = "size must be a multiple of sector size";
2697         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2698                 s = "offset must be a multiple of sector size";
2699         if (s) {
2700                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2701                 free(dup);
2702                 return;
2703         }
2704
2705         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2706                 for (i = 0; flagstr[i]; i++) {
2707                         int bit = flagbits[(uchar_t)flagstr[i]];
2708
2709                         if (bit == 0) {
2710                                 (void) printf("***Invalid flag: %c\n",
2711                                     flagstr[i]);
2712                                 continue;
2713                         }
2714                         flags |= bit;
2715
2716                         /* If it's not something with an argument, keep going */
2717                         if ((bit & (ZDB_FLAG_CHECKSUM |
2718                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2719                                 continue;
2720
2721                         p = &flagstr[i + 1];
2722                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2723                                 blkptr_offset = strtoull(p, &p, 16);
2724                         if (*p != ':' && *p != '\0') {
2725                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2726                                 free(dup);
2727                                 return;
2728                         }
2729                 }
2730         }
2731
2732         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2733         if (vd == NULL) {
2734                 (void) printf("***Invalid vdev: %s\n", vdev);
2735                 free(dup);
2736                 return;
2737         } else {
2738                 if (vd->vdev_path)
2739                         (void) fprintf(stderr, "Found vdev: %s\n",
2740                             vd->vdev_path);
2741                 else
2742                         (void) fprintf(stderr, "Found vdev type: %s\n",
2743                             vd->vdev_ops->vdev_op_type);
2744         }
2745
2746         psize = size;
2747         lsize = size;
2748
2749         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2750         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2751
2752         BP_ZERO(bp);
2753
2754         DVA_SET_VDEV(&dva[0], vd->vdev_id);
2755         DVA_SET_OFFSET(&dva[0], offset);
2756         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2757         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2758
2759         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2760
2761         BP_SET_LSIZE(bp, lsize);
2762         BP_SET_PSIZE(bp, psize);
2763         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2764         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2765         BP_SET_TYPE(bp, DMU_OT_NONE);
2766         BP_SET_LEVEL(bp, 0);
2767         BP_SET_DEDUP(bp, 0);
2768         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2769
2770         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2771         zio = zio_root(spa, NULL, NULL, 0);
2772
2773         if (vd == vd->vdev_top) {
2774                 /*
2775                  * Treat this as a normal block read.
2776                  */
2777                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2778                     ZIO_PRIORITY_SYNC_READ,
2779                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2780         } else {
2781                 /*
2782                  * Treat this as a vdev child I/O.
2783                  */
2784                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2785                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2786                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2787                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2788                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2789         }
2790
2791         error = zio_wait(zio);
2792         spa_config_exit(spa, SCL_STATE, FTAG);
2793
2794         if (error) {
2795                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2796                 goto out;
2797         }
2798
2799         if (flags & ZDB_FLAG_DECOMPRESS) {
2800                 /*
2801                  * We don't know how the data was compressed, so just try
2802                  * every decompress function at every inflated blocksize.
2803                  */
2804                 enum zio_compress c;
2805                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2806                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2807
2808                 bcopy(pbuf, pbuf2, psize);
2809
2810                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2811                     SPA_MAXBLOCKSIZE - psize) == 0);
2812
2813                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2814                     SPA_MAXBLOCKSIZE - psize) == 0);
2815
2816                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2817                     lsize -= SPA_MINBLOCKSIZE) {
2818                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2819                                 if (zio_decompress_data(c, pbuf, lbuf,
2820                                     psize, lsize) == 0 &&
2821                                     zio_decompress_data(c, pbuf2, lbuf2,
2822                                     psize, lsize) == 0 &&
2823                                     bcmp(lbuf, lbuf2, lsize) == 0)
2824                                         break;
2825                         }
2826                         if (c != ZIO_COMPRESS_FUNCTIONS)
2827                                 break;
2828                         lsize -= SPA_MINBLOCKSIZE;
2829                 }
2830
2831                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2832                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2833
2834                 if (lsize <= psize) {
2835                         (void) printf("Decompress of %s failed\n", thing);
2836                         goto out;
2837                 }
2838                 buf = lbuf;
2839                 size = lsize;
2840         } else {
2841                 buf = pbuf;
2842                 size = psize;
2843         }
2844
2845         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2846                 zdb_print_blkptr((blkptr_t *)(void *)
2847                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2848         else if (flags & ZDB_FLAG_RAW)
2849                 zdb_dump_block_raw(buf, size, flags);
2850         else if (flags & ZDB_FLAG_INDIRECT)
2851                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2852                     flags);
2853         else if (flags & ZDB_FLAG_GBH)
2854                 zdb_dump_gbh(buf, flags);
2855         else
2856                 zdb_dump_block(thing, buf, size, flags);
2857
2858 out:
2859         umem_free(pbuf, SPA_MAXBLOCKSIZE);
2860         umem_free(lbuf, SPA_MAXBLOCKSIZE);
2861         free(dup);
2862 }
2863
2864 static boolean_t
2865 pool_match(nvlist_t *cfg, char *tgt)
2866 {
2867         uint64_t v, guid = strtoull(tgt, NULL, 0);
2868         char *s;
2869
2870         if (guid != 0) {
2871                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2872                         return (v == guid);
2873         } else {
2874                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2875                         return (strcmp(s, tgt) == 0);
2876         }
2877         return (B_FALSE);
2878 }
2879
2880 static char *
2881 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2882 {
2883         nvlist_t *pools;
2884         nvlist_t *match = NULL;
2885         char *name = NULL;
2886         char *sepp = NULL;
2887         char sep = 0;
2888         int count = 0;
2889         importargs_t args = { 0 };
2890
2891         args.paths = dirc;
2892         args.path = dirv;
2893         args.can_be_active = B_TRUE;
2894
2895         if ((sepp = strpbrk(*target, "/@")) != NULL) {
2896                 sep = *sepp;
2897                 *sepp = '\0';
2898         }
2899
2900         pools = zpool_search_import(g_zfs, &args);
2901
2902         if (pools != NULL) {
2903                 nvpair_t *elem = NULL;
2904                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2905                         verify(nvpair_value_nvlist(elem, configp) == 0);
2906                         if (pool_match(*configp, *target)) {
2907                                 count++;
2908                                 if (match != NULL) {
2909                                         /* print previously found config */
2910                                         if (name != NULL) {
2911                                                 (void) printf("%s\n", name);
2912                                                 dump_nvlist(match, 8);
2913                                                 name = NULL;
2914                                         }
2915                                         (void) printf("%s\n",
2916                                             nvpair_name(elem));
2917                                         dump_nvlist(*configp, 8);
2918                                 } else {
2919                                         match = *configp;
2920                                         name = nvpair_name(elem);
2921                                 }
2922                         }
2923                 }
2924         }
2925         if (count > 1)
2926                 (void) fatal("\tMatched %d pools - use pool GUID "
2927                     "instead of pool name or \n"
2928                     "\tpool name part of a dataset name to select pool", count);
2929
2930         if (sepp)
2931                 *sepp = sep;
2932         /*
2933          * If pool GUID was specified for pool id, replace it with pool name
2934          */
2935         if (name && (strstr(*target, name) != *target)) {
2936                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
2937
2938                 *target = umem_alloc(sz, UMEM_NOFAIL);
2939                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
2940         }
2941
2942         *configp = name ? match : NULL;
2943
2944         return (name);
2945 }
2946
2947 int
2948 main(int argc, char **argv)
2949 {
2950         int i, c;
2951         struct rlimit rl = { 1024, 1024 };
2952         spa_t *spa = NULL;
2953         objset_t *os = NULL;
2954         int dump_all = 1;
2955         int verbose = 0;
2956         int error = 0;
2957         char **searchdirs = NULL;
2958         int nsearch = 0;
2959         char *target;
2960         nvlist_t *policy = NULL;
2961         uint64_t max_txg = UINT64_MAX;
2962         int rewind = ZPOOL_NEVER_REWIND;
2963
2964         (void) setrlimit(RLIMIT_NOFILE, &rl);
2965         (void) enable_extended_FILE_stdio(-1, -1);
2966
2967         dprintf_setup(&argc, argv);
2968
2969         while ((c = getopt(argc, argv, "bcdhilmsuCDRSAFLXevp:t:U:P")) != -1) {
2970                 switch (c) {
2971                 case 'b':
2972                 case 'c':
2973                 case 'd':
2974                 case 'h':
2975                 case 'i':
2976                 case 'l':
2977                 case 'm':
2978                 case 's':
2979                 case 'u':
2980                 case 'C':
2981                 case 'D':
2982                 case 'R':
2983                 case 'S':
2984                         dump_opt[c]++;
2985                         dump_all = 0;
2986                         break;
2987                 case 'A':
2988                 case 'F':
2989                 case 'L':
2990                 case 'X':
2991                 case 'e':
2992                 case 'P':
2993                         dump_opt[c]++;
2994                         break;
2995                 case 'v':
2996                         verbose++;
2997                         break;
2998                 case 'p':
2999                         if (searchdirs == NULL) {
3000                                 searchdirs = umem_alloc(sizeof (char *),
3001                                     UMEM_NOFAIL);
3002                         } else {
3003                                 char **tmp = umem_alloc((nsearch + 1) *
3004                                     sizeof (char *), UMEM_NOFAIL);
3005                                 bcopy(searchdirs, tmp, nsearch *
3006                                     sizeof (char *));
3007                                 umem_free(searchdirs,
3008                                     nsearch * sizeof (char *));
3009                                 searchdirs = tmp;
3010                         }
3011                         searchdirs[nsearch++] = optarg;
3012                         break;
3013                 case 't':
3014                         max_txg = strtoull(optarg, NULL, 0);
3015                         if (max_txg < TXG_INITIAL) {
3016                                 (void) fprintf(stderr, "incorrect txg "
3017                                     "specified: %s\n", optarg);
3018                                 usage();
3019                         }
3020                         break;
3021                 case 'U':
3022                         spa_config_path = optarg;
3023                         break;
3024                 default:
3025                         usage();
3026                         break;
3027                 }
3028         }
3029
3030         if (!dump_opt['e'] && searchdirs != NULL) {
3031                 (void) fprintf(stderr, "-p option requires use of -e\n");
3032                 usage();
3033         }
3034
3035         kernel_init(FREAD);
3036         if ((g_zfs = libzfs_init()) == NULL)
3037                 return (1);
3038
3039         if (dump_all)
3040                 verbose = MAX(verbose, 1);
3041
3042         for (c = 0; c < 256; c++) {
3043                 if (dump_all && !strchr("elAFLRSXP", c))
3044                         dump_opt[c] = 1;
3045                 if (dump_opt[c])
3046                         dump_opt[c] += verbose;
3047         }
3048
3049         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3050         zfs_recover = (dump_opt['A'] > 1);
3051
3052         argc -= optind;
3053         argv += optind;
3054
3055         if (argc < 2 && dump_opt['R'])
3056                 usage();
3057         if (argc < 1) {
3058                 if (!dump_opt['e'] && dump_opt['C']) {
3059                         dump_cachefile(spa_config_path);
3060                         return (0);
3061                 }
3062                 usage();
3063         }
3064
3065         if (dump_opt['l']) {
3066                 dump_label(argv[0]);
3067                 return (0);
3068         }
3069
3070         if (dump_opt['X'] || dump_opt['F'])
3071                 rewind = ZPOOL_DO_REWIND |
3072                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3073
3074         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3075             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3076             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3077                 fatal("internal error: %s", strerror(ENOMEM));
3078
3079         error = 0;
3080         target = argv[0];
3081
3082         if (dump_opt['e']) {
3083                 nvlist_t *cfg = NULL;
3084                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3085
3086                 error = ENOENT;
3087                 if (name) {
3088                         if (dump_opt['C'] > 1) {
3089                                 (void) printf("\nConfiguration for import:\n");
3090                                 dump_nvlist(cfg, 8);
3091                         }
3092                         if (nvlist_add_nvlist(cfg,
3093                             ZPOOL_REWIND_POLICY, policy) != 0) {
3094                                 fatal("can't open '%s': %s",
3095                                     target, strerror(ENOMEM));
3096                         }
3097                         if ((error = spa_import(name, cfg, NULL,
3098                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3099                                 error = spa_import(name, cfg, NULL,
3100                                     ZFS_IMPORT_VERBATIM);
3101                         }
3102                 }
3103         }
3104
3105         if (error == 0) {
3106                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3107                         error = spa_open_rewind(target, &spa, FTAG, policy,
3108                             NULL);
3109                         if (error) {
3110                                 /*
3111                                  * If we're missing the log device then
3112                                  * try opening the pool after clearing the
3113                                  * log state.
3114                                  */
3115                                 mutex_enter(&spa_namespace_lock);
3116                                 if ((spa = spa_lookup(target)) != NULL &&
3117                                     spa->spa_log_state == SPA_LOG_MISSING) {
3118                                         spa->spa_log_state = SPA_LOG_CLEAR;
3119                                         error = 0;
3120                                 }
3121                                 mutex_exit(&spa_namespace_lock);
3122
3123                                 if (!error) {
3124                                         error = spa_open_rewind(target, &spa,
3125                                             FTAG, policy, NULL);
3126                                 }
3127                         }
3128                 } else {
3129                         error = dmu_objset_own(target, DMU_OST_ANY,
3130                             B_TRUE, FTAG, &os);
3131                 }
3132         }
3133         nvlist_free(policy);
3134
3135         if (error)
3136                 fatal("can't open '%s': %s", target, strerror(error));
3137
3138         argv++;
3139         argc--;
3140         if (!dump_opt['R']) {
3141                 if (argc > 0) {
3142                         zopt_objects = argc;
3143                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3144                         for (i = 0; i < zopt_objects; i++) {
3145                                 errno = 0;
3146                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3147                                 if (zopt_object[i] == 0 && errno != 0)
3148                                         fatal("bad number %s: %s",
3149                                             argv[i], strerror(errno));
3150                         }
3151                 }
3152                 (os != NULL) ? dump_dir(os) : dump_zpool(spa);
3153         } else {
3154                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3155                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3156                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3157                 flagbits['e'] = ZDB_FLAG_BSWAP;
3158                 flagbits['g'] = ZDB_FLAG_GBH;
3159                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3160                 flagbits['p'] = ZDB_FLAG_PHYS;
3161                 flagbits['r'] = ZDB_FLAG_RAW;
3162
3163                 for (i = 0; i < argc; i++)
3164                         zdb_read_block(argv[i], spa);
3165         }
3166
3167         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3168
3169         fuid_table_destroy();
3170         sa_loaded = B_FALSE;
3171
3172         libzfs_fini(g_zfs);
3173         kernel_fini();
3174
3175         return (0);
3176 }