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