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         if ((count = ddt_object_count(ddt, type, class)) == 0)
 702                 return;
 703
 704         dspace = doi.doi_physical_blocks_512 << 9;
 705         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 706
 707         ddt_object_name(ddt, type, class, name);
 708
 709         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 710             name,
 711             (u_longlong_t)count,
 712             (u_longlong_t)(dspace / count),
 713             (u_longlong_t)(mspace / count));
 714
 715         if (dump_opt['D'] < 3)
 716                 return;
 717
 718         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 719
 720         if (dump_opt['D'] < 4)
 721                 return;
 722
 723         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 724                 return;
 725
 726         (void) printf("%s contents:\n\n", name);
 727
 728         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 729                 dump_dde(ddt, &dde, walk);
 730
 731         ASSERT(error == ENOENT);
 732
 733         (void) printf("\n");
 734 }
 735
 736 static void
 737 dump_all_ddts(spa_t *spa)
 738 {
 739         ddt_histogram_t ddh_total;
 740         ddt_stat_t dds_total;
 741         enum zio_checksum c;
 742         enum ddt_type type;
 743         enum ddt_class class;
 744
 745         bzero(&ddh_total, sizeof (ddt_histogram_t));
 746         bzero(&dds_total, sizeof (ddt_stat_t));
 747
 748         for (c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 749                 ddt_t *ddt = spa->spa_ddt[c];
 750                 for (type = 0; type < DDT_TYPES; type++) {
 751                         for (class = 0; class < DDT_CLASSES;
 752                             class++) {
 753                                 dump_ddt(ddt, type, class);
 754                         }
 755                 }
 756         }
 757
 758         ddt_get_dedup_stats(spa, &dds_total);
 759
 760         if (dds_total.dds_blocks == 0) {
 761                 (void) printf("All DDTs are empty\n");
 762                 return;
 763         }
 764
 765         (void) printf("\n");
 766
 767         if (dump_opt['D'] > 1) {
 768                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
 769                 ddt_get_dedup_histogram(spa, &ddh_total);
 770                 zpool_dump_ddt(&dds_total, &ddh_total);
 771         }
 772
 773         dump_dedup_ratio(&dds_total);
 774 }
 775
 776 static void
 777 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 778 {
 779         char *prefix = (void *)sm;
 780
 781         (void) printf("%s [%llu,%llu) length %llu\n",
 782             prefix,
 783             (u_longlong_t)start,
 784             (u_longlong_t)(start + size),
 785             (u_longlong_t)(size));
 786 }
 787
 788 static void
 789 dump_dtl(vdev_t *vd, int indent)
 790 {
 791         spa_t *spa = vd->vdev_spa;
 792         boolean_t required;
 793         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 794         char prefix[256];
 795         int c, t;
 796
 797         spa_vdev_state_enter(spa, SCL_NONE);
 798         required = vdev_dtl_required(vd);
 799         (void) spa_vdev_state_exit(spa, NULL, 0);
 800
 801         if (indent == 0)
 802                 (void) printf("\nDirty time logs:\n\n");
 803
 804         (void) printf("\t%*s%s [%s]\n", indent, "",
 805             vd->vdev_path ? vd->vdev_path :
 806             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 807             required ? "DTL-required" : "DTL-expendable");
 808
 809         for (t = 0; t < DTL_TYPES; t++) {
 810                 space_map_t *sm = &vd->vdev_dtl[t];
 811                 if (sm->sm_space == 0)
 812                         continue;
 813                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 814                     indent + 2, "", name[t]);
 815                 mutex_enter(sm->sm_lock);
 816                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 817                 mutex_exit(sm->sm_lock);
 818                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 819                         dump_spacemap(spa->spa_meta_objset,
 820                             &vd->vdev_dtl_smo, sm);
 821         }
 822
 823         for (c = 0; c < vd->vdev_children; c++)
 824                 dump_dtl(vd->vdev_child[c], indent + 4);
 825 }
 826
 827 static void
 828 dump_history(spa_t *spa)
 829 {
 830         nvlist_t **events = NULL;
 831         char buf[SPA_MAXBLOCKSIZE];
 832         uint64_t resid, len, off = 0;
 833         uint_t num = 0;
 834         int error;
 835         time_t tsec;
 836         struct tm t;
 837         char tbuf[30];
 838         char internalstr[MAXPATHLEN];
 839         int i;
 840
 841         do {
 842                 len = sizeof (buf);
 843
 844                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
 845                         (void) fprintf(stderr, "Unable to read history: "
 846                             "error %d\n", error);
 847                         return;
 848                 }
 849
 850                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
 851                         break;
 852
 853                 off -= resid;
 854         } while (len != 0);
 855
 856         (void) printf("\nHistory:\n");
 857         for (i = 0; i < num; i++) {
 858                 uint64_t time, txg, ievent;
 859                 char *cmd, *intstr;
 860
 861                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 862                     &time) != 0)
 863                         continue;
 864                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 865                     &cmd) != 0) {
 866                         if (nvlist_lookup_uint64(events[i],
 867                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
 868                                 continue;
 869                         verify(nvlist_lookup_uint64(events[i],
 870                             ZPOOL_HIST_TXG, &txg) == 0);
 871                         verify(nvlist_lookup_string(events[i],
 872                             ZPOOL_HIST_INT_STR, &intstr) == 0);
 873                         if (ievent >= LOG_END)
 874                                 continue;
 875
 876                         (void) snprintf(internalstr,
 877                             sizeof (internalstr),
 878                             "[internal %s txg:%lld] %s",
 879                             zfs_history_event_names[ievent],
 880                             (longlong_t)txg, intstr);
 881                         cmd = internalstr;
 882                 }
 883                 tsec = time;
 884                 (void) localtime_r(&tsec, &t);
 885                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
 886                 (void) printf("%s %s\n", tbuf, cmd);
 887         }
 888 }
 889
 890 /*ARGSUSED*/
 891 static void
 892 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 893 {
 894 }
 895
 896 static uint64_t
 897 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
 898 {
 899         if (dnp == NULL) {
 900                 ASSERT(zb->zb_level < 0);
 901                 if (zb->zb_object == 0)
 902                         return (zb->zb_blkid);
 903                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
 904         }
 905
 906         ASSERT(zb->zb_level >= 0);
 907
 908         return ((zb->zb_blkid <<
 909             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 910             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 911 }
 912
 913 static void
 914 sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
 915 {
 916         const dva_t *dva = bp->blk_dva;
 917         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
 918         int i;
 919
 920         if (dump_opt['b'] >= 5) {
 921                 sprintf_blkptr(blkbuf, bp);
 922                 return;
 923         }
 924
 925         blkbuf[0] = '\0';
 926
 927         for (i = 0; i < ndvas; i++)
 928                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 929                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 930                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 931                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 932
 933         (void) sprintf(blkbuf + strlen(blkbuf),
 934             "%llxL/%llxP F=%llu B=%llu/%llu",
 935             (u_longlong_t)BP_GET_LSIZE(bp),
 936             (u_longlong_t)BP_GET_PSIZE(bp),
 937             (u_longlong_t)bp->blk_fill,
 938             (u_longlong_t)bp->blk_birth,
 939             (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
 940 }
 941
 942 static void
 943 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 944     const dnode_phys_t *dnp)
 945 {
 946         char blkbuf[BP_SPRINTF_LEN];
 947         int l;
 948
 949         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 950         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 951
 952         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
 953
 954         ASSERT(zb->zb_level >= 0);
 955
 956         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 957                 if (l == zb->zb_level) {
 958                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 959                 } else {
 960                         (void) printf(" ");
 961                 }
 962         }
 963
 964         sprintf_blkptr_compact(blkbuf, bp);
 965         (void) printf("%s\n", blkbuf);
 966 }
 967
 968 static int
 969 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 970     blkptr_t *bp, const zbookmark_t *zb)
 971 {
 972         int err = 0;
 973
 974         if (bp->blk_birth == 0)
 975                 return (0);
 976
 977         print_indirect(bp, zb, dnp);
 978
 979         if (BP_GET_LEVEL(bp) > 0) {
 980                 uint32_t flags = ARC_WAIT;
 981                 int i;
 982                 blkptr_t *cbp;
 983                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
 984                 arc_buf_t *buf;
 985                 uint64_t fill = 0;
 986
 987                 err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
 988                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
 989                 if (err)
 990                         return (err);
 991                 ASSERT(buf->b_data);
 992
 993                 /* recursively visit blocks below this */
 994                 cbp = buf->b_data;
 995                 for (i = 0; i < epb; i++, cbp++) {
 996                         zbookmark_t czb;
 997
 998                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
 999                             zb->zb_level - 1,
1000                             zb->zb_blkid * epb + i);
1001                         err = visit_indirect(spa, dnp, cbp, &czb);
1002                         if (err)
1003                                 break;
1004                         fill += cbp->blk_fill;
1005                 }
1006                 if (!err)
1007                         ASSERT3U(fill, ==, bp->blk_fill);
1008                 (void) arc_buf_remove_ref(buf, &buf);
1009         }
1010
1011         return (err);
1012 }
1013
1014 /*ARGSUSED*/
1015 static void
1016 dump_indirect(dnode_t *dn)
1017 {
1018         dnode_phys_t *dnp = dn->dn_phys;
1019         int j;
1020         zbookmark_t czb;
1021
1022         (void) printf("Indirect blocks:\n");
1023
1024         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1025             dn->dn_object, dnp->dn_nlevels - 1, 0);
1026         for (j = 0; j < dnp->dn_nblkptr; j++) {
1027                 czb.zb_blkid = j;
1028                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1029                     &dnp->dn_blkptr[j], &czb);
1030         }
1031
1032         (void) printf("\n");
1033 }
1034
1035 /*ARGSUSED*/
1036 static void
1037 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1038 {
1039         dsl_dir_phys_t *dd = data;
1040         time_t crtime;
1041         char nice[32];
1042
1043         if (dd == NULL)
1044                 return;
1045
1046         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1047
1048         crtime = dd->dd_creation_time;
1049         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1050         (void) printf("\t\thead_dataset_obj = %llu\n",
1051             (u_longlong_t)dd->dd_head_dataset_obj);
1052         (void) printf("\t\tparent_dir_obj = %llu\n",
1053             (u_longlong_t)dd->dd_parent_obj);
1054         (void) printf("\t\torigin_obj = %llu\n",
1055             (u_longlong_t)dd->dd_origin_obj);
1056         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1057             (u_longlong_t)dd->dd_child_dir_zapobj);
1058         zdb_nicenum(dd->dd_used_bytes, nice);
1059         (void) printf("\t\tused_bytes = %s\n", nice);
1060         zdb_nicenum(dd->dd_compressed_bytes, nice);
1061         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1062         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1063         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1064         zdb_nicenum(dd->dd_quota, nice);
1065         (void) printf("\t\tquota = %s\n", nice);
1066         zdb_nicenum(dd->dd_reserved, nice);
1067         (void) printf("\t\treserved = %s\n", nice);
1068         (void) printf("\t\tprops_zapobj = %llu\n",
1069             (u_longlong_t)dd->dd_props_zapobj);
1070         (void) printf("\t\tdeleg_zapobj = %llu\n",
1071             (u_longlong_t)dd->dd_deleg_zapobj);
1072         (void) printf("\t\tflags = %llx\n",
1073             (u_longlong_t)dd->dd_flags);
1074
1075 #define DO(which) \
1076         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1077         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1078         DO(HEAD);
1079         DO(SNAP);
1080         DO(CHILD);
1081         DO(CHILD_RSRV);
1082         DO(REFRSRV);
1083 #undef DO
1084 }
1085
1086 /*ARGSUSED*/
1087 static void
1088 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1089 {
1090         dsl_dataset_phys_t *ds = data;
1091         time_t crtime;
1092         char used[32], compressed[32], uncompressed[32], unique[32];
1093         char blkbuf[BP_SPRINTF_LEN];
1094
1095         if (ds == NULL)
1096                 return;
1097
1098         ASSERT(size == sizeof (*ds));
1099         crtime = ds->ds_creation_time;
1100         zdb_nicenum(ds->ds_used_bytes, used);
1101         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1102         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1103         zdb_nicenum(ds->ds_unique_bytes, unique);
1104         sprintf_blkptr(blkbuf, &ds->ds_bp);
1105
1106         (void) printf("\t\tdir_obj = %llu\n",
1107             (u_longlong_t)ds->ds_dir_obj);
1108         (void) printf("\t\tprev_snap_obj = %llu\n",
1109             (u_longlong_t)ds->ds_prev_snap_obj);
1110         (void) printf("\t\tprev_snap_txg = %llu\n",
1111             (u_longlong_t)ds->ds_prev_snap_txg);
1112         (void) printf("\t\tnext_snap_obj = %llu\n",
1113             (u_longlong_t)ds->ds_next_snap_obj);
1114         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1115             (u_longlong_t)ds->ds_snapnames_zapobj);
1116         (void) printf("\t\tnum_children = %llu\n",
1117             (u_longlong_t)ds->ds_num_children);
1118         (void) printf("\t\tuserrefs_obj = %llu\n",
1119             (u_longlong_t)ds->ds_userrefs_obj);
1120         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1121         (void) printf("\t\tcreation_txg = %llu\n",
1122             (u_longlong_t)ds->ds_creation_txg);
1123         (void) printf("\t\tdeadlist_obj = %llu\n",
1124             (u_longlong_t)ds->ds_deadlist_obj);
1125         (void) printf("\t\tused_bytes = %s\n", used);
1126         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1127         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1128         (void) printf("\t\tunique = %s\n", unique);
1129         (void) printf("\t\tfsid_guid = %llu\n",
1130             (u_longlong_t)ds->ds_fsid_guid);
1131         (void) printf("\t\tguid = %llu\n",
1132             (u_longlong_t)ds->ds_guid);
1133         (void) printf("\t\tflags = %llx\n",
1134             (u_longlong_t)ds->ds_flags);
1135         (void) printf("\t\tnext_clones_obj = %llu\n",
1136             (u_longlong_t)ds->ds_next_clones_obj);
1137         (void) printf("\t\tprops_obj = %llu\n",
1138             (u_longlong_t)ds->ds_props_obj);
1139         (void) printf("\t\tbp = %s\n", blkbuf);
1140 }
1141
1142 /* ARGSUSED */
1143 static int
1144 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1145 {
1146         char blkbuf[BP_SPRINTF_LEN];
1147
1148         ASSERT(bp->blk_birth != 0);
1149         sprintf_blkptr_compact(blkbuf, bp);
1150         (void) printf("\t%s\n", blkbuf);
1151         return (0);
1152 }
1153
1154 static void
1155 dump_bpobj(bpobj_t *bpo, char *name)
1156 {
1157         char bytes[32];
1158         char comp[32];
1159         char uncomp[32];
1160
1161         if (dump_opt['d'] < 3)
1162                 return;
1163
1164         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1165         if (bpo->bpo_havesubobj) {
1166                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1167                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1168                 (void) printf("\n    %s: %llu local blkptrs, %llu subobjs, "
1169                     "%s (%s/%s comp)\n",
1170                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1171                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1172                     bytes, comp, uncomp);
1173         } else {
1174                 (void) printf("\n    %s: %llu blkptrs, %s\n",
1175                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, bytes);
1176         }
1177
1178         if (dump_opt['d'] < 5)
1179                 return;
1180
1181         (void) printf("\n");
1182
1183         (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1184 }
1185
1186 static void
1187 dump_deadlist(dsl_deadlist_t *dl)
1188 {
1189         dsl_deadlist_entry_t *dle;
1190         char bytes[32];
1191         char comp[32];
1192         char uncomp[32];
1193
1194         if (dump_opt['d'] < 3)
1195                 return;
1196
1197         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1198         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1199         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1200         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1201             bytes, comp, uncomp);
1202
1203         if (dump_opt['d'] < 4)
1204                 return;
1205
1206         (void) printf("\n");
1207
1208         for (dle = avl_first(&dl->dl_tree); dle;
1209             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1210                 (void) printf("      mintxg %llu -> obj %llu\n",
1211                     (longlong_t)dle->dle_mintxg,
1212                     (longlong_t)dle->dle_bpobj.bpo_object);
1213
1214                 if (dump_opt['d'] >= 5)
1215                         dump_bpobj(&dle->dle_bpobj, "");
1216         }
1217 }
1218
1219 static avl_tree_t idx_tree;
1220 static avl_tree_t domain_tree;
1221 static boolean_t fuid_table_loaded;
1222 static boolean_t sa_loaded;
1223 sa_attr_type_t *sa_attr_table;
1224
1225 static void
1226 fuid_table_destroy(void)
1227 {
1228         if (fuid_table_loaded) {
1229                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1230                 fuid_table_loaded = B_FALSE;
1231         }
1232 }
1233
1234 /*
1235  * print uid or gid information.
1236  * For normal POSIX id just the id is printed in decimal format.
1237  * For CIFS files with FUID the fuid is printed in hex followed by
1238  * the doman-rid string.
1239  */
1240 static void
1241 print_idstr(uint64_t id, const char *id_type)
1242 {
1243         if (FUID_INDEX(id)) {
1244                 char *domain;
1245
1246                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1247                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1248                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1249         } else {
1250                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1251         }
1252
1253 }
1254
1255 static void
1256 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1257 {
1258         uint32_t uid_idx, gid_idx;
1259
1260         uid_idx = FUID_INDEX(uid);
1261         gid_idx = FUID_INDEX(gid);
1262
1263         /* Load domain table, if not already loaded */
1264         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1265                 uint64_t fuid_obj;
1266
1267                 /* first find the fuid object.  It lives in the master node */
1268                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1269                     8, 1, &fuid_obj) == 0);
1270                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1271                 (void) zfs_fuid_table_load(os, fuid_obj,
1272                     &idx_tree, &domain_tree);
1273                 fuid_table_loaded = B_TRUE;
1274         }
1275
1276         print_idstr(uid, "uid");
1277         print_idstr(gid, "gid");
1278 }
1279
1280 /*ARGSUSED*/
1281 static void
1282 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1283 {
1284         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1285         sa_handle_t *hdl;
1286         uint64_t xattr, rdev, gen;
1287         uint64_t uid, gid, mode, fsize, parent, links;
1288         uint64_t pflags;
1289         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1290         time_t z_crtime, z_atime, z_mtime, z_ctime;
1291         sa_bulk_attr_t bulk[12];
1292         int idx = 0;
1293         int error;
1294
1295         if (!sa_loaded) {
1296                 uint64_t sa_attrs = 0;
1297                 uint64_t version;
1298
1299                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1300                     8, 1, &version) == 0);
1301                 if (version >= ZPL_VERSION_SA) {
1302                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1303                             8, 1, &sa_attrs) == 0);
1304                 }
1305                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1306                     ZPL_END, &sa_attr_table)) != 0) {
1307                         (void) printf("sa_setup failed errno %d, can't "
1308                             "display znode contents\n", error);
1309                         return;
1310                 }
1311                 sa_loaded = B_TRUE;
1312         }
1313
1314         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1315                 (void) printf("Failed to get handle for SA znode\n");
1316                 return;
1317         }
1318
1319         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1320         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1321         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1322             &links, 8);
1323         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1324         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1325             &mode, 8);
1326         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1327             NULL, &parent, 8);
1328         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1329             &fsize, 8);
1330         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1331             acctm, 16);
1332         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1333             modtm, 16);
1334         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1335             crtm, 16);
1336         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1337             chgtm, 16);
1338         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1339             &pflags, 8);
1340
1341         if (sa_bulk_lookup(hdl, bulk, idx)) {
1342                 (void) sa_handle_destroy(hdl);
1343                 return;
1344         }
1345
1346         error = zfs_obj_to_path(os, object, path, sizeof (path));
1347         if (error != 0) {
1348                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1349                     (u_longlong_t)object);
1350         }
1351         if (dump_opt['d'] < 3) {
1352                 (void) printf("\t%s\n", path);
1353                 (void) sa_handle_destroy(hdl);
1354                 return;
1355         }
1356
1357         z_crtime = (time_t)crtm[0];
1358         z_atime = (time_t)acctm[0];
1359         z_mtime = (time_t)modtm[0];
1360         z_ctime = (time_t)chgtm[0];
1361
1362         (void) printf("\tpath   %s\n", path);
1363         dump_uidgid(os, uid, gid);
1364         (void) printf("\tatime  %s", ctime(&z_atime));
1365         (void) printf("\tmtime  %s", ctime(&z_mtime));
1366         (void) printf("\tctime  %s", ctime(&z_ctime));
1367         (void) printf("\tcrtime %s", ctime(&z_crtime));
1368         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1369         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1370         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1371         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1372         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1373         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1374         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1375             sizeof (uint64_t)) == 0)
1376                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1377         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1378             sizeof (uint64_t)) == 0)
1379                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1380         sa_handle_destroy(hdl);
1381 }
1382
1383 /*ARGSUSED*/
1384 static void
1385 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1386 {
1387 }
1388
1389 /*ARGSUSED*/
1390 static void
1391 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1392 {
1393 }
1394
1395 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1396         dump_none,              /* unallocated                  */
1397         dump_zap,               /* object directory             */
1398         dump_uint64,            /* object array                 */
1399         dump_none,              /* packed nvlist                */
1400         dump_packed_nvlist,     /* packed nvlist size           */
1401         dump_none,              /* bplist                       */
1402         dump_none,              /* bplist header                */
1403         dump_none,              /* SPA space map header         */
1404         dump_none,              /* SPA space map                */
1405         dump_none,              /* ZIL intent log               */
1406         dump_dnode,             /* DMU dnode                    */
1407         dump_dmu_objset,        /* DMU objset                   */
1408         dump_dsl_dir,           /* DSL directory                */
1409         dump_zap,               /* DSL directory child map      */
1410         dump_zap,               /* DSL dataset snap map         */
1411         dump_zap,               /* DSL props                    */
1412         dump_dsl_dataset,       /* DSL dataset                  */
1413         dump_znode,             /* ZFS znode                    */
1414         dump_acl,               /* ZFS V0 ACL                   */
1415         dump_uint8,             /* ZFS plain file               */
1416         dump_zpldir,            /* ZFS directory                */
1417         dump_zap,               /* ZFS master node              */
1418         dump_zap,               /* ZFS delete queue             */
1419         dump_uint8,             /* zvol object                  */
1420         dump_zap,               /* zvol prop                    */
1421         dump_uint8,             /* other uint8[]                */
1422         dump_uint64,            /* other uint64[]               */
1423         dump_zap,               /* other ZAP                    */
1424         dump_zap,               /* persistent error log         */
1425         dump_uint8,             /* SPA history                  */
1426         dump_uint64,            /* SPA history offsets          */
1427         dump_zap,               /* Pool properties              */
1428         dump_zap,               /* DSL permissions              */
1429         dump_acl,               /* ZFS ACL                      */
1430         dump_uint8,             /* ZFS SYSACL                   */
1431         dump_none,              /* FUID nvlist                  */
1432         dump_packed_nvlist,     /* FUID nvlist size             */
1433         dump_zap,               /* DSL dataset next clones      */
1434         dump_zap,               /* DSL scrub queue              */
1435         dump_zap,               /* ZFS user/group used          */
1436         dump_zap,               /* ZFS user/group quota         */
1437         dump_zap,               /* snapshot refcount tags       */
1438         dump_ddt_zap,           /* DDT ZAP object               */
1439         dump_zap,               /* DDT statistics               */
1440         dump_znode,             /* SA object                    */
1441         dump_zap,               /* SA Master Node               */
1442         dump_sa_attrs,          /* SA attribute registration    */
1443         dump_sa_layouts,        /* SA attribute layouts         */
1444         dump_zap,               /* DSL scrub translations       */
1445         dump_none,              /* fake dedup BP                */
1446         dump_zap,               /* deadlist                     */
1447         dump_none,              /* deadlist hdr                 */
1448         dump_zap,               /* dsl clones                   */
1449         dump_none,              /* bpobj subobjs                */
1450         dump_unknown,           /* Unknown type, must be last   */
1451 };
1452
1453 static void
1454 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1455 {
1456         dmu_buf_t *db = NULL;
1457         dmu_object_info_t doi;
1458         dnode_t *dn;
1459         void *bonus = NULL;
1460         size_t bsize = 0;
1461         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1462         char bonus_size[32];
1463         char aux[50];
1464         int error;
1465
1466         if (*print_header) {
1467                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1468                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1469                     "%full", "type");
1470                 *print_header = 0;
1471         }
1472
1473         if (object == 0) {
1474                 dn = DMU_META_DNODE(os);
1475         } else {
1476                 error = dmu_bonus_hold(os, object, FTAG, &db);
1477                 if (error)
1478                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1479                             object, error);
1480                 bonus = db->db_data;
1481                 bsize = db->db_size;
1482                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1483         }
1484         dmu_object_info_from_dnode(dn, &doi);
1485
1486         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1487         zdb_nicenum(doi.doi_data_block_size, dblk);
1488         zdb_nicenum(doi.doi_max_offset, lsize);
1489         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1490         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1491         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1492             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1493             doi.doi_max_offset);
1494
1495         aux[0] = '\0';
1496
1497         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1498                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1499                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1500         }
1501
1502         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1503                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1504                     ZDB_COMPRESS_NAME(doi.doi_compress));
1505         }
1506
1507         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1508             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1509             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1510
1511         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1512                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1513                     "", "", "", "", "", bonus_size, "bonus",
1514                     ZDB_OT_NAME(doi.doi_bonus_type));
1515         }
1516
1517         if (verbosity >= 4) {
1518                 (void) printf("\tdnode flags: %s%s%s\n",
1519                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1520                     "USED_BYTES " : "",
1521                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1522                     "USERUSED_ACCOUNTED " : "",
1523                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1524                     "SPILL_BLKPTR" : "");
1525                 (void) printf("\tdnode maxblkid: %llu\n",
1526                     (longlong_t)dn->dn_phys->dn_maxblkid);
1527
1528                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1529                     bonus, bsize);
1530                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1531                 *print_header = 1;
1532         }
1533
1534         if (verbosity >= 5)
1535                 dump_indirect(dn);
1536
1537         if (verbosity >= 5) {
1538                 /*
1539                  * Report the list of segments that comprise the object.
1540                  */
1541                 uint64_t start = 0;
1542                 uint64_t end;
1543                 uint64_t blkfill = 1;
1544                 int minlvl = 1;
1545
1546                 if (dn->dn_type == DMU_OT_DNODE) {
1547                         minlvl = 0;
1548                         blkfill = DNODES_PER_BLOCK;
1549                 }
1550
1551                 for (;;) {
1552                         char segsize[32];
1553                         error = dnode_next_offset(dn,
1554                             0, &start, minlvl, blkfill, 0);
1555                         if (error)
1556                                 break;
1557                         end = start;
1558                         error = dnode_next_offset(dn,
1559                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1560                         zdb_nicenum(end - start, segsize);
1561                         (void) printf("\t\tsegment [%016llx, %016llx)"
1562                             " size %5s\n", (u_longlong_t)start,
1563                             (u_longlong_t)end, segsize);
1564                         if (error)
1565                                 break;
1566                         start = end;
1567                 }
1568         }
1569
1570         if (db != NULL)
1571                 dmu_buf_rele(db, FTAG);
1572 }
1573
1574 static char *objset_types[DMU_OST_NUMTYPES] = {
1575         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1576
1577 static void
1578 dump_dir(objset_t *os)
1579 {
1580         dmu_objset_stats_t dds;
1581         uint64_t object, object_count;
1582         uint64_t refdbytes, usedobjs, scratch;
1583         char numbuf[32];
1584         char blkbuf[BP_SPRINTF_LEN + 20];
1585         char osname[MAXNAMELEN];
1586         char *type = "UNKNOWN";
1587         int verbosity = dump_opt['d'];
1588         int print_header = 1;
1589         int i, error;
1590
1591         dmu_objset_fast_stat(os, &dds);
1592
1593         if (dds.dds_type < DMU_OST_NUMTYPES)
1594                 type = objset_types[dds.dds_type];
1595
1596         if (dds.dds_type == DMU_OST_META) {
1597                 dds.dds_creation_txg = TXG_INITIAL;
1598                 usedobjs = os->os_rootbp->blk_fill;
1599                 refdbytes = os->os_spa->spa_dsl_pool->
1600                     dp_mos_dir->dd_phys->dd_used_bytes;
1601         } else {
1602                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1603         }
1604
1605         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1606
1607         zdb_nicenum(refdbytes, numbuf);
1608
1609         if (verbosity >= 4) {
1610                 (void) sprintf(blkbuf, ", rootbp ");
1611                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1612         } else {
1613                 blkbuf[0] = '\0';
1614         }
1615
1616         dmu_objset_name(os, osname);
1617
1618         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1619             "%s, %llu objects%s\n",
1620             osname, type, (u_longlong_t)dmu_objset_id(os),
1621             (u_longlong_t)dds.dds_creation_txg,
1622             numbuf, (u_longlong_t)usedobjs, blkbuf);
1623
1624         if (zopt_objects != 0) {
1625                 for (i = 0; i < zopt_objects; i++)
1626                         dump_object(os, zopt_object[i], verbosity,
1627                             &print_header);
1628                 (void) printf("\n");
1629                 return;
1630         }
1631
1632         if (dump_opt['i'] != 0 || verbosity >= 2)
1633                 dump_intent_log(dmu_objset_zil(os));
1634
1635         if (dmu_objset_ds(os) != NULL)
1636                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1637
1638         if (verbosity < 2)
1639                 return;
1640
1641         if (os->os_rootbp->blk_birth == 0)
1642                 return;
1643
1644         dump_object(os, 0, verbosity, &print_header);
1645         object_count = 0;
1646         if (DMU_USERUSED_DNODE(os) != NULL &&
1647             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1648                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1649                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1650         }
1651
1652         object = 0;
1653         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1654                 dump_object(os, object, verbosity, &print_header);
1655                 object_count++;
1656         }
1657
1658         ASSERT3U(object_count, ==, usedobjs);
1659
1660         (void) printf("\n");
1661
1662         if (error != ESRCH) {
1663                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1664                 abort();
1665         }
1666 }
1667
1668 static void
1669 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1670 {
1671         time_t timestamp = ub->ub_timestamp;
1672
1673         (void) printf("%s", header ? header : "");
1674         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1675         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1676         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1677         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1678         (void) printf("\ttimestamp = %llu UTC = %s",
1679             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1680         if (dump_opt['u'] >= 3) {
1681                 char blkbuf[BP_SPRINTF_LEN];
1682                 sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1683                 (void) printf("\trootbp = %s\n", blkbuf);
1684         }
1685         (void) printf("%s", footer ? footer : "");
1686 }
1687
1688 static void
1689 dump_config(spa_t *spa)
1690 {
1691         dmu_buf_t *db;
1692         size_t nvsize = 0;
1693         int error = 0;
1694
1695
1696         error = dmu_bonus_hold(spa->spa_meta_objset,
1697             spa->spa_config_object, FTAG, &db);
1698
1699         if (error == 0) {
1700                 nvsize = *(uint64_t *)db->db_data;
1701                 dmu_buf_rele(db, FTAG);
1702
1703                 (void) printf("\nMOS Configuration:\n");
1704                 dump_packed_nvlist(spa->spa_meta_objset,
1705                     spa->spa_config_object, (void *)&nvsize, 1);
1706         } else {
1707                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1708                     (u_longlong_t)spa->spa_config_object, error);
1709         }
1710 }
1711
1712 static void
1713 dump_cachefile(const char *cachefile)
1714 {
1715         int fd;
1716         struct stat64 statbuf;
1717         char *buf;
1718         nvlist_t *config;
1719
1720         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1721                 (void) printf("cannot open '%s': %s\n", cachefile,
1722                     strerror(errno));
1723                 exit(1);
1724         }
1725
1726         if (fstat64(fd, &statbuf) != 0) {
1727                 (void) printf("failed to stat '%s': %s\n", cachefile,
1728                     strerror(errno));
1729                 exit(1);
1730         }
1731
1732         if ((buf = malloc(statbuf.st_size)) == NULL) {
1733                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1734                     (u_longlong_t)statbuf.st_size);
1735                 exit(1);
1736         }
1737
1738         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1739                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1740                     (u_longlong_t)statbuf.st_size);
1741                 exit(1);
1742         }
1743
1744         (void) close(fd);
1745
1746         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1747                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1748                 exit(1);
1749         }
1750
1751         free(buf);
1752
1753         dump_nvlist(config, 0);
1754
1755         nvlist_free(config);
1756 }
1757
1758 #define ZDB_MAX_UB_HEADER_SIZE 32
1759
1760 static void
1761 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1762 {
1763         vdev_t vd;
1764         vdev_t *vdp = &vd;
1765         char header[ZDB_MAX_UB_HEADER_SIZE];
1766         int i;
1767
1768         vd.vdev_ashift = ashift;
1769         vdp->vdev_top = vdp;
1770
1771         for (i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1772                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1773                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1774
1775                 if (uberblock_verify(ub))
1776                         continue;
1777                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1778                     "Uberblock[%d]\n", i);
1779                 dump_uberblock(ub, header, "");
1780         }
1781 }
1782
1783 static void
1784 dump_label(const char *dev)
1785 {
1786         int fd;
1787         vdev_label_t label;
1788         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1789         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1790         struct stat64 statbuf;
1791         uint64_t psize, ashift;
1792         int len = strlen(dev) + 1;
1793         int l;
1794
1795         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1796                 len++;
1797                 path = malloc(len);
1798                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1799         } else {
1800                 path = strdup(dev);
1801         }
1802
1803         if ((fd = open64(path, O_RDONLY)) < 0) {
1804                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
1805                 free(path);
1806                 exit(1);
1807         }
1808
1809         if (fstat64_blk(fd, &statbuf) != 0) {
1810                 (void) printf("failed to stat '%s': %s\n", path,
1811                     strerror(errno));
1812                 free(path);
1813                 (void) close(fd);
1814                 exit(1);
1815         }
1816
1817         psize = statbuf.st_size;
1818         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1819
1820         for (l = 0; l < VDEV_LABELS; l++) {
1821                 nvlist_t *config = NULL;
1822
1823                 (void) printf("--------------------------------------------\n");
1824                 (void) printf("LABEL %d\n", l);
1825                 (void) printf("--------------------------------------------\n");
1826
1827                 if (pread64(fd, &label, sizeof (label),
1828                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1829                         (void) printf("failed to read label %d\n", l);
1830                         continue;
1831                 }
1832
1833                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1834                         (void) printf("failed to unpack label %d\n", l);
1835                         ashift = SPA_MINBLOCKSHIFT;
1836                 } else {
1837                         nvlist_t *vdev_tree = NULL;
1838
1839                         dump_nvlist(config, 4);
1840                         if ((nvlist_lookup_nvlist(config,
1841                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1842                             (nvlist_lookup_uint64(vdev_tree,
1843                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1844                                 ashift = SPA_MINBLOCKSHIFT;
1845                         nvlist_free(config);
1846                 }
1847                 if (dump_opt['u'])
1848                         dump_label_uberblocks(&label, ashift);
1849         }
1850
1851         free(path);
1852         (void) close(fd);
1853 }
1854
1855 /*ARGSUSED*/
1856 static int
1857 dump_one_dir(const char *dsname, void *arg)
1858 {
1859         int error;
1860         objset_t *os;
1861
1862         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1863         if (error) {
1864                 (void) printf("Could not open %s, error %d\n", dsname, error);
1865                 return (0);
1866         }
1867         dump_dir(os);
1868         dmu_objset_disown(os, FTAG);
1869         fuid_table_destroy();
1870         sa_loaded = B_FALSE;
1871         return (0);
1872 }
1873
1874 /*
1875  * Block statistics.
1876  */
1877 typedef struct zdb_blkstats {
1878         uint64_t        zb_asize;
1879         uint64_t        zb_lsize;
1880         uint64_t        zb_psize;
1881         uint64_t        zb_count;
1882 } zdb_blkstats_t;
1883
1884 /*
1885  * Extended object types to report deferred frees and dedup auto-ditto blocks.
1886  */
1887 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
1888 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
1889 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 2)
1890
1891 static char *zdb_ot_extname[] = {
1892         "deferred free",
1893         "dedup ditto",
1894         "Total",
1895 };
1896
1897 #define ZB_TOTAL        DN_MAX_LEVELS
1898
1899 typedef struct zdb_cb {
1900         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1901         uint64_t        zcb_dedup_asize;
1902         uint64_t        zcb_dedup_blocks;
1903         uint64_t        zcb_errors[256];
1904         int             zcb_readfails;
1905         int             zcb_haderrors;
1906         spa_t           *zcb_spa;
1907 } zdb_cb_t;
1908
1909 static void
1910 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
1911     dmu_object_type_t type)
1912 {
1913         uint64_t refcnt = 0;
1914         int i;
1915
1916         ASSERT(type < ZDB_OT_TOTAL);
1917
1918         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1919                 return;
1920
1921         for (i = 0; i < 4; i++) {
1922                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1923                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
1924                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1925
1926                 zb->zb_asize += BP_GET_ASIZE(bp);
1927                 zb->zb_lsize += BP_GET_LSIZE(bp);
1928                 zb->zb_psize += BP_GET_PSIZE(bp);
1929                 zb->zb_count++;
1930         }
1931
1932         if (dump_opt['L'])
1933                 return;
1934
1935         if (BP_GET_DEDUP(bp)) {
1936                 ddt_t *ddt;
1937                 ddt_entry_t *dde;
1938
1939                 ddt = ddt_select(zcb->zcb_spa, bp);
1940                 ddt_enter(ddt);
1941                 dde = ddt_lookup(ddt, bp, B_FALSE);
1942
1943                 if (dde == NULL) {
1944                         refcnt = 0;
1945                 } else {
1946                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
1947                         ddt_phys_decref(ddp);
1948                         refcnt = ddp->ddp_refcnt;
1949                         if (ddt_phys_total_refcnt(dde) == 0)
1950                                 ddt_remove(ddt, dde);
1951                 }
1952                 ddt_exit(ddt);
1953         }
1954
1955         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
1956             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
1957             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
1958 }
1959
1960 /* ARGSUSED */
1961 static int
1962 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
1963     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
1964 {
1965         zdb_cb_t *zcb = arg;
1966         char blkbuf[BP_SPRINTF_LEN];
1967         dmu_object_type_t type;
1968         boolean_t is_metadata;
1969
1970         if (bp == NULL)
1971                 return (0);
1972
1973         type = BP_GET_TYPE(bp);
1974
1975         zdb_count_block(zcb, zilog, bp, type);
1976
1977         is_metadata = (BP_GET_LEVEL(bp) != 0 || dmu_ot[type].ot_metadata);
1978
1979         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
1980                 int ioerr;
1981                 size_t size = BP_GET_PSIZE(bp);
1982                 void *data = malloc(size);
1983                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
1984
1985                 /* If it's an intent log block, failure is expected. */
1986                 if (zb->zb_level == ZB_ZIL_LEVEL)
1987                         flags |= ZIO_FLAG_SPECULATIVE;
1988
1989                 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1990                     NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb));
1991
1992                 free(data);
1993
1994                 if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) {
1995                         zcb->zcb_haderrors = 1;
1996                         zcb->zcb_errors[ioerr]++;
1997
1998                         if (dump_opt['b'] >= 2)
1999                                 sprintf_blkptr(blkbuf, bp);
2000                         else
2001                                 blkbuf[0] = '\0';
2002
2003                         (void) printf("zdb_blkptr_cb: "
2004                             "Got error %d reading "
2005                             "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2006                             ioerr,
2007                             (u_longlong_t)zb->zb_objset,
2008                             (u_longlong_t)zb->zb_object,
2009                             (u_longlong_t)zb->zb_level,
2010                             (u_longlong_t)zb->zb_blkid,
2011                             blkbuf);
2012                 }
2013         }
2014
2015         zcb->zcb_readfails = 0;
2016
2017         if (dump_opt['b'] >= 4) {
2018                 sprintf_blkptr(blkbuf, bp);
2019                 (void) printf("objset %llu object %llu "
2020                     "level %lld offset 0x%llx %s\n",
2021                     (u_longlong_t)zb->zb_objset,
2022                     (u_longlong_t)zb->zb_object,
2023                     (longlong_t)zb->zb_level,
2024                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2025                     blkbuf);
2026         }
2027
2028         return (0);
2029 }
2030
2031 static void
2032 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2033 {
2034         vdev_t *vd = sm->sm_ppd;
2035
2036         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2037             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2038 }
2039
2040 /* ARGSUSED */
2041 static void
2042 zdb_space_map_load(space_map_t *sm)
2043 {
2044 }
2045
2046 static void
2047 zdb_space_map_unload(space_map_t *sm)
2048 {
2049         space_map_vacate(sm, zdb_leak, sm);
2050 }
2051
2052 /* ARGSUSED */
2053 static void
2054 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2055 {
2056 }
2057
2058 static space_map_ops_t zdb_space_map_ops = {
2059         zdb_space_map_load,
2060         zdb_space_map_unload,
2061         NULL,   /* alloc */
2062         zdb_space_map_claim,
2063         NULL,   /* free */
2064         NULL    /* maxsize */
2065 };
2066
2067 static void
2068 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2069 {
2070         ddt_bookmark_t ddb = { 0 };
2071         ddt_entry_t dde;
2072         int error;
2073         int p;
2074
2075         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2076                 blkptr_t blk;
2077                 ddt_phys_t *ddp = dde.dde_phys;
2078
2079                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2080                         return;
2081
2082                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2083
2084                 for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2085                         if (ddp->ddp_phys_birth == 0)
2086                                 continue;
2087                         ddt_bp_create(ddb.ddb_checksum,
2088                             &dde.dde_key, ddp, &blk);
2089                         if (p == DDT_PHYS_DITTO) {
2090                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2091                         } else {
2092                                 zcb->zcb_dedup_asize +=
2093                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2094                                 zcb->zcb_dedup_blocks++;
2095                         }
2096                 }
2097                 if (!dump_opt['L']) {
2098                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2099                         ddt_enter(ddt);
2100                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2101                         ddt_exit(ddt);
2102                 }
2103         }
2104
2105         ASSERT(error == ENOENT);
2106 }
2107
2108 static void
2109 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2110 {
2111         zcb->zcb_spa = spa;
2112         int c, m;
2113
2114         if (!dump_opt['L']) {
2115                 vdev_t *rvd = spa->spa_root_vdev;
2116                 for (c = 0; c < rvd->vdev_children; c++) {
2117                         vdev_t *vd = rvd->vdev_child[c];
2118                         for (m = 0; m < vd->vdev_ms_count; m++) {
2119                                 metaslab_t *msp = vd->vdev_ms[m];
2120                                 mutex_enter(&msp->ms_lock);
2121                                 space_map_unload(&msp->ms_map);
2122                                 VERIFY(space_map_load(&msp->ms_map,
2123                                     &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2124                                     spa->spa_meta_objset) == 0);
2125                                 msp->ms_map.sm_ppd = vd;
2126                                 mutex_exit(&msp->ms_lock);
2127                         }
2128                 }
2129         }
2130
2131         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2132
2133         zdb_ddt_leak_init(spa, zcb);
2134
2135         spa_config_exit(spa, SCL_CONFIG, FTAG);
2136 }
2137
2138 static void
2139 zdb_leak_fini(spa_t *spa)
2140 {
2141         int c, m;
2142
2143         if (!dump_opt['L']) {
2144                 vdev_t *rvd = spa->spa_root_vdev;
2145                 for (c = 0; c < rvd->vdev_children; c++) {
2146                         vdev_t *vd = rvd->vdev_child[c];
2147                         for (m = 0; m < vd->vdev_ms_count; m++) {
2148                                 metaslab_t *msp = vd->vdev_ms[m];
2149                                 mutex_enter(&msp->ms_lock);
2150                                 space_map_unload(&msp->ms_map);
2151                                 mutex_exit(&msp->ms_lock);
2152                         }
2153                 }
2154         }
2155 }
2156
2157 /* ARGSUSED */
2158 static int
2159 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2160 {
2161         zdb_cb_t *zcb = arg;
2162
2163         if (dump_opt['b'] >= 4) {
2164                 char blkbuf[BP_SPRINTF_LEN];
2165                 sprintf_blkptr(blkbuf, bp);
2166                 (void) printf("[%s] %s\n",
2167                     "deferred free", blkbuf);
2168         }
2169         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2170         return (0);
2171 }
2172
2173 static int
2174 dump_block_stats(spa_t *spa)
2175 {
2176         zdb_cb_t zcb;
2177         zdb_blkstats_t *zb, *tzb;
2178         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2179         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2180         int leaks = 0;
2181         int e;
2182
2183         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
2184             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2185             (dump_opt['c'] == 1) ? "metadata " : "",
2186             dump_opt['c'] ? "checksums " : "",
2187             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2188             !dump_opt['L'] ? "nothing leaked " : "");
2189
2190         /*
2191          * Load all space maps as SM_ALLOC maps, then traverse the pool
2192          * claiming each block we discover.  If the pool is perfectly
2193          * consistent, the space maps will be empty when we're done.
2194          * Anything left over is a leak; any block we can't claim (because
2195          * it's not part of any space map) is a double allocation,
2196          * reference to a freed block, or an unclaimed log block.
2197          */
2198         bzero(&zcb, sizeof(zdb_cb_t));
2199         zdb_leak_init(spa, &zcb);
2200
2201         /*
2202          * If there's a deferred-free bplist, process that first.
2203          */
2204         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2205             count_block_cb, &zcb, NULL);
2206         (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2207             count_block_cb, &zcb, NULL);
2208
2209         if (dump_opt['c'] > 1)
2210                 flags |= TRAVERSE_PREFETCH_DATA;
2211
2212         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2213
2214         if (zcb.zcb_haderrors) {
2215                 (void) printf("\nError counts:\n\n");
2216                 (void) printf("\t%5s  %s\n", "errno", "count");
2217                 for (e = 0; e < 256; e++) {
2218                         if (zcb.zcb_errors[e] != 0) {
2219                                 (void) printf("\t%5d  %llu\n",
2220                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2221                         }
2222                 }
2223         }
2224
2225         /*
2226          * Report any leaked segments.
2227          */
2228         zdb_leak_fini(spa);
2229
2230         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2231
2232         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2233         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2234
2235         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2236         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2237
2238         if (total_found == total_alloc) {
2239                 if (!dump_opt['L'])
2240                         (void) printf("\n\tNo leaks (block sum matches space"
2241                             " maps exactly)\n");
2242         } else {
2243                 (void) printf("block traversal size %llu != alloc %llu "
2244                     "(%s %lld)\n",
2245                     (u_longlong_t)total_found,
2246                     (u_longlong_t)total_alloc,
2247                     (dump_opt['L']) ? "unreachable" : "leaked",
2248                     (longlong_t)(total_alloc - total_found));
2249                 leaks = 1;
2250         }
2251
2252         if (tzb->zb_count == 0)
2253                 return (2);
2254
2255         (void) printf("\n");
2256         (void) printf("\tbp count:      %10llu\n",
2257             (u_longlong_t)tzb->zb_count);
2258         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2259             (u_longlong_t)tzb->zb_lsize,
2260             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2261         (void) printf("\tbp physical:   %10llu      avg:"
2262             " %6llu     compression: %6.2f\n",
2263             (u_longlong_t)tzb->zb_psize,
2264             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2265             (double)tzb->zb_lsize / tzb->zb_psize);
2266         (void) printf("\tbp allocated:  %10llu      avg:"
2267             " %6llu     compression: %6.2f\n",
2268             (u_longlong_t)tzb->zb_asize,
2269             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2270             (double)tzb->zb_lsize / tzb->zb_asize);
2271         (void) printf("\tbp deduped:    %10llu    ref>1:"
2272             " %6llu   deduplication: %6.2f\n",
2273             (u_longlong_t)zcb.zcb_dedup_asize,
2274             (u_longlong_t)zcb.zcb_dedup_blocks,
2275             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2276         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2277             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2278
2279         if (dump_opt['b'] >= 2) {
2280                 int l, t, level;
2281                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2282                     "\t  avg\t comp\t%%Total\tType\n");
2283
2284                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2285                         char csize[32], lsize[32], psize[32], asize[32];
2286                         char avg[32];
2287                         char *typename;
2288
2289                         if (t < DMU_OT_NUMTYPES)
2290                                 typename = dmu_ot[t].ot_name;
2291                         else
2292                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2293
2294                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2295                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2296                                     "\t%5s\t%5s\t%6s\t%s\n",
2297                                     "-",
2298                                     "-",
2299                                     "-",
2300                                     "-",
2301                                     "-",
2302                                     "-",
2303                                     "-",
2304                                     typename);
2305                                 continue;
2306                         }
2307
2308                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2309                                 level = (l == -1 ? ZB_TOTAL : l);
2310                                 zb = &zcb.zcb_type[level][t];
2311
2312                                 if (zb->zb_asize == 0)
2313                                         continue;
2314
2315                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2316                                         continue;
2317
2318                                 if (level == 0 && zb->zb_asize ==
2319                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2320                                         continue;
2321
2322                                 zdb_nicenum(zb->zb_count, csize);
2323                                 zdb_nicenum(zb->zb_lsize, lsize);
2324                                 zdb_nicenum(zb->zb_psize, psize);
2325                                 zdb_nicenum(zb->zb_asize, asize);
2326                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2327
2328                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2329                                     "\t%5.2f\t%6.2f\t",
2330                                     csize, lsize, psize, asize, avg,
2331                                     (double)zb->zb_lsize / zb->zb_psize,
2332                                     100.0 * zb->zb_asize / tzb->zb_asize);
2333
2334                                 if (level == ZB_TOTAL)
2335                                         (void) printf("%s\n", typename);
2336                                 else
2337                                         (void) printf("    L%d %s\n",
2338                                             level, typename);
2339                         }
2340                 }
2341         }
2342
2343         (void) printf("\n");
2344
2345         if (leaks)
2346                 return (2);
2347
2348         if (zcb.zcb_haderrors)
2349                 return (3);
2350
2351         return (0);
2352 }
2353
2354 typedef struct zdb_ddt_entry {
2355         ddt_key_t       zdde_key;
2356         uint64_t        zdde_ref_blocks;
2357         uint64_t        zdde_ref_lsize;
2358         uint64_t        zdde_ref_psize;
2359         uint64_t        zdde_ref_dsize;
2360         avl_node_t      zdde_node;
2361 } zdb_ddt_entry_t;
2362
2363 /* ARGSUSED */
2364 static int
2365 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2366     arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2367 {
2368         avl_tree_t *t = arg;
2369         avl_index_t where;
2370         zdb_ddt_entry_t *zdde, zdde_search;
2371
2372         if (bp == NULL)
2373                 return (0);
2374
2375         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2376                 (void) printf("traversing objset %llu, %llu objects, "
2377                     "%lu blocks so far\n",
2378                     (u_longlong_t)zb->zb_objset,
2379                     (u_longlong_t)bp->blk_fill,
2380                     avl_numnodes(t));
2381         }
2382
2383         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2384             BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata)
2385                 return (0);
2386
2387         ddt_key_fill(&zdde_search.zdde_key, bp);
2388
2389         zdde = avl_find(t, &zdde_search, &where);
2390
2391         if (zdde == NULL) {
2392                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2393                 zdde->zdde_key = zdde_search.zdde_key;
2394                 avl_insert(t, zdde, where);
2395         }
2396
2397         zdde->zdde_ref_blocks += 1;
2398         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2399         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2400         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2401
2402         return (0);
2403 }
2404
2405 static void
2406 dump_simulated_ddt(spa_t *spa)
2407 {
2408         avl_tree_t t;
2409         void *cookie = NULL;
2410         zdb_ddt_entry_t *zdde;
2411         ddt_histogram_t ddh_total;
2412         ddt_stat_t dds_total;
2413
2414         bzero(&ddh_total, sizeof (ddt_histogram_t));
2415         bzero(&dds_total, sizeof (ddt_stat_t));
2416
2417         avl_create(&t, ddt_entry_compare,
2418             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2419
2420         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2421
2422         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2423             zdb_ddt_add_cb, &t);
2424
2425         spa_config_exit(spa, SCL_CONFIG, FTAG);
2426
2427         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2428                 ddt_stat_t dds;
2429                 uint64_t refcnt = zdde->zdde_ref_blocks;
2430                 ASSERT(refcnt != 0);
2431
2432                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2433                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2434                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2435                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2436
2437                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2438                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2439                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2440                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2441
2442                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2443
2444                 umem_free(zdde, sizeof (*zdde));
2445         }
2446
2447         avl_destroy(&t);
2448
2449         ddt_histogram_stat(&dds_total, &ddh_total);
2450
2451         (void) printf("Simulated DDT histogram:\n");
2452
2453         zpool_dump_ddt(&dds_total, &ddh_total);
2454
2455         dump_dedup_ratio(&dds_total);
2456 }
2457
2458 static void
2459 dump_zpool(spa_t *spa)
2460 {
2461         dsl_pool_t *dp = spa_get_dsl(spa);
2462         int rc = 0;
2463
2464         if (dump_opt['S']) {
2465                 dump_simulated_ddt(spa);
2466                 return;
2467         }
2468
2469         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2470                 (void) printf("\nCached configuration:\n");
2471                 dump_nvlist(spa->spa_config, 8);
2472         }
2473
2474         if (dump_opt['C'])
2475                 dump_config(spa);
2476
2477         if (dump_opt['u'])
2478                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2479
2480         if (dump_opt['D'])
2481                 dump_all_ddts(spa);
2482
2483         if (dump_opt['d'] > 2 || dump_opt['m'])
2484                 dump_metaslabs(spa);
2485
2486         if (dump_opt['d'] || dump_opt['i']) {
2487                 dump_dir(dp->dp_meta_objset);
2488                 if (dump_opt['d'] >= 3) {
2489                         dump_bpobj(&spa->spa_deferred_bpobj, "Deferred frees");
2490                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2491                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2492                                     "Pool frees");
2493                         }
2494                         dump_dtl(spa->spa_root_vdev, 0);
2495                 }
2496                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2497                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2498         }
2499         if (dump_opt['b'] || dump_opt['c'])
2500                 rc = dump_block_stats(spa);
2501
2502         if (dump_opt['s'])
2503                 show_pool_stats(spa);
2504
2505         if (dump_opt['h'])
2506                 dump_history(spa);
2507
2508         if (rc != 0)
2509                 exit(rc);
2510 }
2511
2512 #define ZDB_FLAG_CHECKSUM       0x0001
2513 #define ZDB_FLAG_DECOMPRESS     0x0002
2514 #define ZDB_FLAG_BSWAP          0x0004
2515 #define ZDB_FLAG_GBH            0x0008
2516 #define ZDB_FLAG_INDIRECT       0x0010
2517 #define ZDB_FLAG_PHYS           0x0020
2518 #define ZDB_FLAG_RAW            0x0040
2519 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2520
2521 int flagbits[256];
2522
2523 static void
2524 zdb_print_blkptr(blkptr_t *bp, int flags)
2525 {
2526         char blkbuf[BP_SPRINTF_LEN];
2527
2528         if (flags & ZDB_FLAG_BSWAP)
2529                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2530
2531         sprintf_blkptr(blkbuf, bp);
2532         (void) printf("%s\n", blkbuf);
2533 }
2534
2535 static void
2536 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2537 {
2538         int i;
2539
2540         for (i = 0; i < nbps; i++)
2541                 zdb_print_blkptr(&bp[i], flags);
2542 }
2543
2544 static void
2545 zdb_dump_gbh(void *buf, int flags)
2546 {
2547         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2548 }
2549
2550 static void
2551 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2552 {
2553         if (flags & ZDB_FLAG_BSWAP)
2554                 byteswap_uint64_array(buf, size);
2555         VERIFY(write(fileno(stdout), buf, size) == size);
2556 }
2557
2558 static void
2559 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2560 {
2561         uint64_t *d = (uint64_t *)buf;
2562         int nwords = size / sizeof (uint64_t);
2563         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2564         int i, j;
2565         char *hdr, *c;
2566
2567
2568         if (do_bswap)
2569                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2570         else
2571                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2572
2573         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2574
2575         for (i = 0; i < nwords; i += 2) {
2576                 (void) printf("%06llx:  %016llx  %016llx  ",
2577                     (u_longlong_t)(i * sizeof (uint64_t)),
2578                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2579                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2580
2581                 c = (char *)&d[i];
2582                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2583                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2584                 (void) printf("\n");
2585         }
2586 }
2587
2588 /*
2589  * There are two acceptable formats:
2590  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2591  *      child[.child]*    - For example: 0.1.1
2592  *
2593  * The second form can be used to specify arbitrary vdevs anywhere
2594  * in the heirarchy.  For example, in a pool with a mirror of
2595  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2596  */
2597 static vdev_t *
2598 zdb_vdev_lookup(vdev_t *vdev, char *path)
2599 {
2600         char *s, *p, *q;
2601         int i;
2602
2603         if (vdev == NULL)
2604                 return (NULL);
2605
2606         /* First, assume the x.x.x.x format */
2607         i = (int)strtoul(path, &s, 10);
2608         if (s == path || (s && *s != '.' && *s != '\0'))
2609                 goto name;
2610         if (i < 0 || i >= vdev->vdev_children)
2611                 return (NULL);
2612
2613         vdev = vdev->vdev_child[i];
2614         if (*s == '\0')
2615                 return (vdev);
2616         return (zdb_vdev_lookup(vdev, s+1));
2617
2618 name:
2619         for (i = 0; i < vdev->vdev_children; i++) {
2620                 vdev_t *vc = vdev->vdev_child[i];
2621
2622                 if (vc->vdev_path == NULL) {
2623                         vc = zdb_vdev_lookup(vc, path);
2624                         if (vc == NULL)
2625                                 continue;
2626                         else
2627                                 return (vc);
2628                 }
2629
2630                 p = strrchr(vc->vdev_path, '/');
2631                 p = p ? p + 1 : vc->vdev_path;
2632                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2633
2634                 if (strcmp(vc->vdev_path, path) == 0)
2635                         return (vc);
2636                 if (strcmp(p, path) == 0)
2637                         return (vc);
2638                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2639                         return (vc);
2640         }
2641
2642         return (NULL);
2643 }
2644
2645 /*
2646  * Read a block from a pool and print it out.  The syntax of the
2647  * block descriptor is:
2648  *
2649  *      pool:vdev_specifier:offset:size[:flags]
2650  *
2651  *      pool           - The name of the pool you wish to read from
2652  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2653  *      offset         - offset, in hex, in bytes
2654  *      size           - Amount of data to read, in hex, in bytes
2655  *      flags          - A string of characters specifying options
2656  *               b: Decode a blkptr at given offset within block
2657  *              *c: Calculate and display checksums
2658  *               d: Decompress data before dumping
2659  *               e: Byteswap data before dumping
2660  *               g: Display data as a gang block header
2661  *               i: Display as an indirect block
2662  *               p: Do I/O to physical offset
2663  *               r: Dump raw data to stdout
2664  *
2665  *              * = not yet implemented
2666  */
2667 static void
2668 zdb_read_block(char *thing, spa_t *spa)
2669 {
2670         blkptr_t blk, *bp = &blk;
2671         dva_t *dva = bp->blk_dva;
2672         int flags = 0;
2673         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2674         zio_t *zio;
2675         vdev_t *vd;
2676         void *pbuf, *lbuf, *buf;
2677         char *s, *p, *dup, *vdev, *flagstr;
2678         int i, error;
2679
2680         dup = strdup(thing);
2681         s = strtok(dup, ":");
2682         vdev = s ? s : "";
2683         s = strtok(NULL, ":");
2684         offset = strtoull(s ? s : "", NULL, 16);
2685         s = strtok(NULL, ":");
2686         size = strtoull(s ? s : "", NULL, 16);
2687         s = strtok(NULL, ":");
2688         flagstr = s ? s : "";
2689
2690         s = NULL;
2691         if (size == 0)
2692                 s = "size must not be zero";
2693         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2694                 s = "size must be a multiple of sector size";
2695         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2696                 s = "offset must be a multiple of sector size";
2697         if (s) {
2698                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2699                 free(dup);
2700                 return;
2701         }
2702
2703         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2704                 for (i = 0; flagstr[i]; i++) {
2705                         int bit = flagbits[(uchar_t)flagstr[i]];
2706
2707                         if (bit == 0) {
2708                                 (void) printf("***Invalid flag: %c\n",
2709                                     flagstr[i]);
2710                                 continue;
2711                         }
2712                         flags |= bit;
2713
2714                         /* If it's not something with an argument, keep going */
2715                         if ((bit & (ZDB_FLAG_CHECKSUM |
2716                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2717                                 continue;
2718
2719                         p = &flagstr[i + 1];
2720                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2721                                 blkptr_offset = strtoull(p, &p, 16);
2722                         if (*p != ':' && *p != '\0') {
2723                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2724                                 free(dup);
2725                                 return;
2726                         }
2727                 }
2728         }
2729
2730         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2731         if (vd == NULL) {
2732                 (void) printf("***Invalid vdev: %s\n", vdev);
2733                 free(dup);
2734                 return;
2735         } else {
2736                 if (vd->vdev_path)
2737                         (void) fprintf(stderr, "Found vdev: %s\n",
2738                             vd->vdev_path);
2739                 else
2740                         (void) fprintf(stderr, "Found vdev type: %s\n",
2741                             vd->vdev_ops->vdev_op_type);
2742         }
2743
2744         psize = size;
2745         lsize = size;
2746
2747         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2748         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2749
2750         BP_ZERO(bp);
2751
2752         DVA_SET_VDEV(&dva[0], vd->vdev_id);
2753         DVA_SET_OFFSET(&dva[0], offset);
2754         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2755         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2756
2757         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2758
2759         BP_SET_LSIZE(bp, lsize);
2760         BP_SET_PSIZE(bp, psize);
2761         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2762         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2763         BP_SET_TYPE(bp, DMU_OT_NONE);
2764         BP_SET_LEVEL(bp, 0);
2765         BP_SET_DEDUP(bp, 0);
2766         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2767
2768         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2769         zio = zio_root(spa, NULL, NULL, 0);
2770
2771         if (vd == vd->vdev_top) {
2772                 /*
2773                  * Treat this as a normal block read.
2774                  */
2775                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2776                     ZIO_PRIORITY_SYNC_READ,
2777                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2778         } else {
2779                 /*
2780                  * Treat this as a vdev child I/O.
2781                  */
2782                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2783                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2784                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2785                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2786                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2787         }
2788
2789         error = zio_wait(zio);
2790         spa_config_exit(spa, SCL_STATE, FTAG);
2791
2792         if (error) {
2793                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2794                 goto out;
2795         }
2796
2797         if (flags & ZDB_FLAG_DECOMPRESS) {
2798                 /*
2799                  * We don't know how the data was compressed, so just try
2800                  * every decompress function at every inflated blocksize.
2801                  */
2802                 enum zio_compress c;
2803                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2804                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2805
2806                 bcopy(pbuf, pbuf2, psize);
2807
2808                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2809                     SPA_MAXBLOCKSIZE - psize) == 0);
2810
2811                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2812                     SPA_MAXBLOCKSIZE - psize) == 0);
2813
2814                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2815                     lsize -= SPA_MINBLOCKSIZE) {
2816                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2817                                 if (zio_decompress_data(c, pbuf, lbuf,
2818                                     psize, lsize) == 0 &&
2819                                     zio_decompress_data(c, pbuf2, lbuf2,
2820                                     psize, lsize) == 0 &&
2821                                     bcmp(lbuf, lbuf2, lsize) == 0)
2822                                         break;
2823                         }
2824                         if (c != ZIO_COMPRESS_FUNCTIONS)
2825                                 break;
2826                         lsize -= SPA_MINBLOCKSIZE;
2827                 }
2828
2829                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2830                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2831
2832                 if (lsize <= psize) {
2833                         (void) printf("Decompress of %s failed\n", thing);
2834                         goto out;
2835                 }
2836                 buf = lbuf;
2837                 size = lsize;
2838         } else {
2839                 buf = pbuf;
2840                 size = psize;
2841         }
2842
2843         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2844                 zdb_print_blkptr((blkptr_t *)(void *)
2845                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2846         else if (flags & ZDB_FLAG_RAW)
2847                 zdb_dump_block_raw(buf, size, flags);
2848         else if (flags & ZDB_FLAG_INDIRECT)
2849                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2850                     flags);
2851         else if (flags & ZDB_FLAG_GBH)
2852                 zdb_dump_gbh(buf, flags);
2853         else
2854                 zdb_dump_block(thing, buf, size, flags);
2855
2856 out:
2857         umem_free(pbuf, SPA_MAXBLOCKSIZE);
2858         umem_free(lbuf, SPA_MAXBLOCKSIZE);
2859         free(dup);
2860 }
2861
2862 static boolean_t
2863 pool_match(nvlist_t *cfg, char *tgt)
2864 {
2865         uint64_t v, guid = strtoull(tgt, NULL, 0);
2866         char *s;
2867
2868         if (guid != 0) {
2869                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2870                         return (v == guid);
2871         } else {
2872                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2873                         return (strcmp(s, tgt) == 0);
2874         }
2875         return (B_FALSE);
2876 }
2877
2878 static char *
2879 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2880 {
2881         nvlist_t *pools;
2882         nvlist_t *match = NULL;
2883         char *name = NULL;
2884         char *sepp = NULL;
2885         char sep = 0;
2886         int count = 0;
2887         importargs_t args = { 0 };
2888
2889         args.paths = dirc;
2890         args.path = dirv;
2891         args.can_be_active = B_TRUE;
2892
2893         if ((sepp = strpbrk(*target, "/@")) != NULL) {
2894                 sep = *sepp;
2895                 *sepp = '\0';
2896         }
2897
2898         pools = zpool_search_import(g_zfs, &args);
2899
2900         if (pools != NULL) {
2901                 nvpair_t *elem = NULL;
2902                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2903                         verify(nvpair_value_nvlist(elem, configp) == 0);
2904                         if (pool_match(*configp, *target)) {
2905                                 count++;
2906                                 if (match != NULL) {
2907                                         /* print previously found config */
2908                                         if (name != NULL) {
2909                                                 (void) printf("%s\n", name);
2910                                                 dump_nvlist(match, 8);
2911                                                 name = NULL;
2912                                         }
2913                                         (void) printf("%s\n",
2914                                             nvpair_name(elem));
2915                                         dump_nvlist(*configp, 8);
2916                                 } else {
2917                                         match = *configp;
2918                                         name = nvpair_name(elem);
2919                                 }
2920                         }
2921                 }
2922         }
2923         if (count > 1)
2924                 (void) fatal("\tMatched %d pools - use pool GUID "
2925                     "instead of pool name or \n"
2926                     "\tpool name part of a dataset name to select pool", count);
2927
2928         if (sepp)
2929                 *sepp = sep;
2930         /*
2931          * If pool GUID was specified for pool id, replace it with pool name
2932          */
2933         if (name && (strstr(*target, name) != *target)) {
2934                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
2935
2936                 *target = umem_alloc(sz, UMEM_NOFAIL);
2937                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
2938         }
2939
2940         *configp = name ? match : NULL;
2941
2942         return (name);
2943 }
2944
2945 int
2946 main(int argc, char **argv)
2947 {
2948         int i, c;
2949         struct rlimit rl = { 1024, 1024 };
2950         spa_t *spa = NULL;
2951         objset_t *os = NULL;
2952         int dump_all = 1;
2953         int verbose = 0;
2954         int error = 0;
2955         char **searchdirs = NULL;
2956         int nsearch = 0;
2957         char *target;
2958         nvlist_t *policy = NULL;
2959         uint64_t max_txg = UINT64_MAX;
2960         int rewind = ZPOOL_NEVER_REWIND;
2961
2962         (void) setrlimit(RLIMIT_NOFILE, &rl);
2963         (void) enable_extended_FILE_stdio(-1, -1);
2964
2965         dprintf_setup(&argc, argv);
2966
2967         while ((c = getopt(argc, argv, "bcdhilmsuCDRSAFLXevp:t:U:P")) != -1) {
2968                 switch (c) {
2969                 case 'b':
2970                 case 'c':
2971                 case 'd':
2972                 case 'h':
2973                 case 'i':
2974                 case 'l':
2975                 case 'm':
2976                 case 's':
2977                 case 'u':
2978                 case 'C':
2979                 case 'D':
2980                 case 'R':
2981                 case 'S':
2982                         dump_opt[c]++;
2983                         dump_all = 0;
2984                         break;
2985                 case 'A':
2986                 case 'F':
2987                 case 'L':
2988                 case 'X':
2989                 case 'e':
2990                 case 'P':
2991                         dump_opt[c]++;
2992                         break;
2993                 case 'v':
2994                         verbose++;
2995                         break;
2996                 case 'p':
2997                         if (searchdirs == NULL) {
2998                                 searchdirs = umem_alloc(sizeof (char *),
2999                                     UMEM_NOFAIL);
3000                         } else {
3001                                 char **tmp = umem_alloc((nsearch + 1) *
3002                                     sizeof (char *), UMEM_NOFAIL);
3003                                 bcopy(searchdirs, tmp, nsearch *
3004                                     sizeof (char *));
3005                                 umem_free(searchdirs,
3006                                     nsearch * sizeof (char *));
3007                                 searchdirs = tmp;
3008                         }
3009                         searchdirs[nsearch++] = optarg;
3010                         break;
3011                 case 't':
3012                         max_txg = strtoull(optarg, NULL, 0);
3013                         if (max_txg < TXG_INITIAL) {
3014                                 (void) fprintf(stderr, "incorrect txg "
3015                                     "specified: %s\n", optarg);
3016                                 usage();
3017                         }
3018                         break;
3019                 case 'U':
3020                         spa_config_path = optarg;
3021                         break;
3022                 default:
3023                         usage();
3024                         break;
3025                 }
3026         }
3027
3028         if (!dump_opt['e'] && searchdirs != NULL) {
3029                 (void) fprintf(stderr, "-p option requires use of -e\n");
3030                 usage();
3031         }
3032
3033         kernel_init(FREAD);
3034         if ((g_zfs = libzfs_init()) == NULL)
3035                 return (1);
3036
3037         if (dump_all)
3038                 verbose = MAX(verbose, 1);
3039
3040         for (c = 0; c < 256; c++) {
3041                 if (dump_all && !strchr("elAFLRSXP", c))
3042                         dump_opt[c] = 1;
3043                 if (dump_opt[c])
3044                         dump_opt[c] += verbose;
3045         }
3046
3047         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3048         zfs_recover = (dump_opt['A'] > 1);
3049
3050         argc -= optind;
3051         argv += optind;
3052
3053         if (argc < 2 && dump_opt['R'])
3054                 usage();
3055         if (argc < 1) {
3056                 if (!dump_opt['e'] && dump_opt['C']) {
3057                         dump_cachefile(spa_config_path);
3058                         return (0);
3059                 }
3060                 usage();
3061         }
3062
3063         if (dump_opt['l']) {
3064                 dump_label(argv[0]);
3065                 return (0);
3066         }
3067
3068         if (dump_opt['X'] || dump_opt['F'])
3069                 rewind = ZPOOL_DO_REWIND |
3070                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3071
3072         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3073             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3074             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3075                 fatal("internal error: %s", strerror(ENOMEM));
3076
3077         error = 0;
3078         target = argv[0];
3079
3080         if (dump_opt['e']) {
3081                 nvlist_t *cfg = NULL;
3082                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3083
3084                 error = ENOENT;
3085                 if (name) {
3086                         if (dump_opt['C'] > 1) {
3087                                 (void) printf("\nConfiguration for import:\n");
3088                                 dump_nvlist(cfg, 8);
3089                         }
3090                         if (nvlist_add_nvlist(cfg,
3091                             ZPOOL_REWIND_POLICY, policy) != 0) {
3092                                 fatal("can't open '%s': %s",
3093                                     target, strerror(ENOMEM));
3094                         }
3095                         if ((error = spa_import(name, cfg, NULL,
3096                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3097                                 error = spa_import(name, cfg, NULL,
3098                                     ZFS_IMPORT_VERBATIM);
3099                         }
3100                 }
3101         }
3102
3103         if (error == 0) {
3104                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3105                         error = spa_open_rewind(target, &spa, FTAG, policy,
3106                             NULL);
3107                         if (error) {
3108                                 /*
3109                                  * If we're missing the log device then
3110                                  * try opening the pool after clearing the
3111                                  * log state.
3112                                  */
3113                                 mutex_enter(&spa_namespace_lock);
3114                                 if ((spa = spa_lookup(target)) != NULL &&
3115                                     spa->spa_log_state == SPA_LOG_MISSING) {
3116                                         spa->spa_log_state = SPA_LOG_CLEAR;
3117                                         error = 0;
3118                                 }
3119                                 mutex_exit(&spa_namespace_lock);
3120
3121                                 if (!error) {
3122                                         error = spa_open_rewind(target, &spa,
3123                                             FTAG, policy, NULL);
3124                                 }
3125                         }
3126                 } else {
3127                         error = dmu_objset_own(target, DMU_OST_ANY,
3128                             B_TRUE, FTAG, &os);
3129                 }
3130         }
3131         nvlist_free(policy);
3132
3133         if (error)
3134                 fatal("can't open '%s': %s", target, strerror(error));
3135
3136         argv++;
3137         argc--;
3138         if (!dump_opt['R']) {
3139                 if (argc > 0) {
3140                         zopt_objects = argc;
3141                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3142                         for (i = 0; i < zopt_objects; i++) {
3143                                 errno = 0;
3144                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3145                                 if (zopt_object[i] == 0 && errno != 0)
3146                                         fatal("bad number %s: %s",
3147                                             argv[i], strerror(errno));
3148                         }
3149                 }
3150                 (os != NULL) ? dump_dir(os) : dump_zpool(spa);
3151         } else {
3152                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3153                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3154                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3155                 flagbits['e'] = ZDB_FLAG_BSWAP;
3156                 flagbits['g'] = ZDB_FLAG_GBH;
3157                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3158                 flagbits['p'] = ZDB_FLAG_PHYS;
3159                 flagbits['r'] = ZDB_FLAG_RAW;
3160
3161                 for (i = 0; i < argc; i++)
3162                         zdb_read_block(argv[i], spa);
3163         }
3164
3165         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3166
3167         fuid_table_destroy();
3168         sa_loaded = B_FALSE;
3169
3170         libzfs_fini(g_zfs);
3171         kernel_fini();
3172
3173         return (0);
3174 }