1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2012 by Delphix. All rights reserved.
  25  */
  26 
  27 #include <stdio.h>
  28 #include <stdio_ext.h>
  29 #include <stdlib.h>
  30 #include <ctype.h>
  31 #include <sys/zfs_context.h>
  32 #include <sys/spa.h>
  33 #include <sys/spa_impl.h>
  34 #include <sys/dmu.h>
  35 #include <sys/zap.h>
  36 #include <sys/fs/zfs.h>
  37 #include <sys/zfs_znode.h>
  38 #include <sys/zfs_sa.h>
  39 #include <sys/sa.h>
  40 #include <sys/sa_impl.h>
  41 #include <sys/vdev.h>
  42 #include <sys/vdev_impl.h>
  43 #include <sys/metaslab_impl.h>
  44 #include <sys/dmu_objset.h>
  45 #include <sys/dsl_dir.h>
  46 #include <sys/dsl_dataset.h>
  47 #include <sys/dsl_pool.h>
  48 #include <sys/dbuf.h>
  49 #include <sys/zil.h>
  50 #include <sys/zil_impl.h>
  51 #include <sys/stat.h>
  52 #include <sys/resource.h>
  53 #include <sys/dmu_traverse.h>
  54 #include <sys/zio_checksum.h>
  55 #include <sys/zio_compress.h>
  56 #include <sys/zfs_fuid.h>
  57 #include <sys/arc.h>
  58 #include <sys/ddt.h>
  59 #include <sys/zfeature.h>
  60 #include <zfs_comutil.h>
  61 #undef ZFS_MAXNAMELEN
  62 #undef verify
  63 #include <libzfs.h>
  64 
  65 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \
  66     zio_compress_table[(idx)].ci_name : "UNKNOWN")
  67 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \
  68     zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  69 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \
  70     dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ? \
  71     dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
  72 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : DMU_OT_NUMTYPES)
  73 
  74 #ifndef lint
  75 extern int zfs_recover;
  76 #else
  77 int zfs_recover;
  78 #endif
  79 
  80 const char cmdname[] = "zdb";
  81 uint8_t dump_opt[256];
  82 
  83 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  84 
  85 extern void dump_intent_log(zilog_t *);
  86 uint64_t *zopt_object = NULL;
  87 int zopt_objects = 0;
  88 libzfs_handle_t *g_zfs;
  89 
  90 /*
  91  * These libumem hooks provide a reasonable set of defaults for the allocator's
  92  * debugging facilities.
  93  */
  94 const char *
  95 _umem_debug_init()
  96 {
  97         return ("default,verbose"); /* $UMEM_DEBUG setting */
  98 }
  99 
 100 const char *
 101 _umem_logging_init(void)
 102 {
 103         return ("fail,contents"); /* $UMEM_LOGGING setting */
 104 }
 105 
 106 static void
 107 usage(void)
 108 {
 109         (void) fprintf(stderr,
 110             "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
 111             "poolname [object...]\n"
 112             "       %s [-divPA] [-e -p path...] dataset [object...]\n"
 113             "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] "
 114             "poolname [vdev [metaslab...]]\n"
 115             "       %s -R [-A] [-e [-p path...]] poolname "
 116             "vdev:offset:size[:flags]\n"
 117             "       %s -S [-PA] [-e [-p path...]] poolname\n"
 118             "       %s -l [-uA] device\n"
 119             "       %s -C [-A] [-U config]\n\n",
 120             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 121 
 122         (void) fprintf(stderr, "    Dataset name must include at least one "
 123             "separator character '/' or '@'\n");
 124         (void) fprintf(stderr, "    If dataset name is specified, only that "
 125             "dataset is dumped\n");
 126         (void) fprintf(stderr, "    If object numbers are specified, only "
 127             "those objects are dumped\n\n");
 128         (void) fprintf(stderr, "    Options to control amount of output:\n");
 129         (void) fprintf(stderr, "        -u uberblock\n");
 130         (void) fprintf(stderr, "        -d dataset(s)\n");
 131         (void) fprintf(stderr, "        -i intent logs\n");
 132         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 133         (void) fprintf(stderr, "        -h pool history\n");
 134         (void) fprintf(stderr, "        -b block statistics\n");
 135         (void) fprintf(stderr, "        -m metaslabs\n");
 136         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 137             "all data) blocks\n");
 138         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 139         (void) fprintf(stderr, "        -D dedup statistics\n");
 140         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 141         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 142         (void) fprintf(stderr, "        -l dump label contents\n");
 143         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 144             "load spacemaps)\n");
 145         (void) fprintf(stderr, "        -R read and display block from a "
 146             "device\n\n");
 147         (void) fprintf(stderr, "    Below options are intended for use "
 148             "with other options (except -l):\n");
 149         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 150             "panic recovery (-AA) or both (-AAA)\n");
 151         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 152             "safe range of transaction groups\n");
 153         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 154             "cachefile\n");
 155         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 156             "work with dataset)\n");
 157         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 158             "has altroot/not in a cachefile\n");
 159         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 160             "-e to specify path to vdev dir\n");
 161         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 162         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 163             "searching for uberblocks\n");
 164         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 165             "to make only that option verbose\n");
 166         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 167         exit(1);
 168 }
 169 
 170 /*
 171  * Called for usage errors that are discovered after a call to spa_open(),
 172  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 173  */
 174 
 175 static void
 176 fatal(const char *fmt, ...)
 177 {
 178         va_list ap;
 179 
 180         va_start(ap, fmt);
 181         (void) fprintf(stderr, "%s: ", cmdname);
 182         (void) vfprintf(stderr, fmt, ap);
 183         va_end(ap);
 184         (void) fprintf(stderr, "\n");
 185 
 186         exit(1);
 187 }
 188 
 189 /* ARGSUSED */
 190 static void
 191 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 192 {
 193         nvlist_t *nv;
 194         size_t nvsize = *(uint64_t *)data;
 195         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 196 
 197         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 198 
 199         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 200 
 201         umem_free(packed, nvsize);
 202 
 203         dump_nvlist(nv, 8);
 204 
 205         nvlist_free(nv);
 206 }
 207 
 208 /* ARGSUSED */
 209 static void
 210 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
 211 {
 212         spa_history_phys_t *shp = data;
 213 
 214         if (shp == NULL)
 215                 return;
 216 
 217         (void) printf("\t\tpool_create_len = %llu\n",
 218             (u_longlong_t)shp->sh_pool_create_len);
 219         (void) printf("\t\tphys_max_off = %llu\n",
 220             (u_longlong_t)shp->sh_phys_max_off);
 221         (void) printf("\t\tbof = %llu\n",
 222             (u_longlong_t)shp->sh_bof);
 223         (void) printf("\t\teof = %llu\n",
 224             (u_longlong_t)shp->sh_eof);
 225         (void) printf("\t\trecords_lost = %llu\n",
 226             (u_longlong_t)shp->sh_records_lost);
 227 }
 228 
 229 static void
 230 zdb_nicenum(uint64_t num, char *buf)
 231 {
 232         if (dump_opt['P'])
 233                 (void) sprintf(buf, "%llu", (longlong_t)num);
 234         else
 235                 nicenum(num, buf);
 236 }
 237 
 238 const char dump_zap_stars[] = "****************************************";
 239 const int dump_zap_width = sizeof (dump_zap_stars) - 1;
 240 
 241 static void
 242 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
 243 {
 244         int i;
 245         int minidx = ZAP_HISTOGRAM_SIZE - 1;
 246         int maxidx = 0;
 247         uint64_t max = 0;
 248 
 249         for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
 250                 if (histo[i] > max)
 251                         max = histo[i];
 252                 if (histo[i] > 0 && i > maxidx)
 253                         maxidx = i;
 254                 if (histo[i] > 0 && i < minidx)
 255                         minidx = i;
 256         }
 257 
 258         if (max < dump_zap_width)
 259                 max = dump_zap_width;
 260 
 261         for (i = minidx; i <= maxidx; i++)
 262                 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
 263                     &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
 264 }
 265 
 266 static void
 267 dump_zap_stats(objset_t *os, uint64_t object)
 268 {
 269         int error;
 270         zap_stats_t zs;
 271 
 272         error = zap_get_stats(os, object, &zs);
 273         if (error)
 274                 return;
 275 
 276         if (zs.zs_ptrtbl_len == 0) {
 277                 ASSERT(zs.zs_num_blocks == 1);
 278                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 279                     (u_longlong_t)zs.zs_blocksize,
 280                     (u_longlong_t)zs.zs_num_entries);
 281                 return;
 282         }
 283 
 284         (void) printf("\tFat ZAP stats:\n");
 285 
 286         (void) printf("\t\tPointer table:\n");
 287         (void) printf("\t\t\t%llu elements\n",
 288             (u_longlong_t)zs.zs_ptrtbl_len);
 289         (void) printf("\t\t\tzt_blk: %llu\n",
 290             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 291         (void) printf("\t\t\tzt_numblks: %llu\n",
 292             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 293         (void) printf("\t\t\tzt_shift: %llu\n",
 294             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 295         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 296             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 297         (void) printf("\t\t\tzt_nextblk: %llu\n",
 298             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 299 
 300         (void) printf("\t\tZAP entries: %llu\n",
 301             (u_longlong_t)zs.zs_num_entries);
 302         (void) printf("\t\tLeaf blocks: %llu\n",
 303             (u_longlong_t)zs.zs_num_leafs);
 304         (void) printf("\t\tTotal blocks: %llu\n",
 305             (u_longlong_t)zs.zs_num_blocks);
 306         (void) printf("\t\tzap_block_type: 0x%llx\n",
 307             (u_longlong_t)zs.zs_block_type);
 308         (void) printf("\t\tzap_magic: 0x%llx\n",
 309             (u_longlong_t)zs.zs_magic);
 310         (void) printf("\t\tzap_salt: 0x%llx\n",
 311             (u_longlong_t)zs.zs_salt);
 312 
 313         (void) printf("\t\tLeafs with 2^n pointers:\n");
 314         dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
 315 
 316         (void) printf("\t\tBlocks with n*5 entries:\n");
 317         dump_zap_histogram(zs.zs_blocks_with_n5_entries);
 318 
 319         (void) printf("\t\tBlocks n/10 full:\n");
 320         dump_zap_histogram(zs.zs_blocks_n_tenths_full);
 321 
 322         (void) printf("\t\tEntries with n chunks:\n");
 323         dump_zap_histogram(zs.zs_entries_using_n_chunks);
 324 
 325         (void) printf("\t\tBuckets with n entries:\n");
 326         dump_zap_histogram(zs.zs_buckets_with_n_entries);
 327 }
 328 
 329 /*ARGSUSED*/
 330 static void
 331 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 332 {
 333 }
 334 
 335 /*ARGSUSED*/
 336 static void
 337 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 338 {
 339         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 340 }
 341 
 342 /*ARGSUSED*/
 343 void
 344 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 345 {
 346 }
 347 
 348 /*ARGSUSED*/
 349 static void
 350 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 351 {
 352 }
 353 
 354 /*ARGSUSED*/
 355 static void
 356 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 357 {
 358         zap_cursor_t zc;
 359         zap_attribute_t attr;
 360         void *prop;
 361         int i;
 362 
 363         dump_zap_stats(os, object);
 364         (void) printf("\n");
 365 
 366         for (zap_cursor_init(&zc, os, object);
 367             zap_cursor_retrieve(&zc, &attr) == 0;
 368             zap_cursor_advance(&zc)) {
 369                 (void) printf("\t\t%s = ", attr.za_name);
 370                 if (attr.za_num_integers == 0) {
 371                         (void) printf("\n");
 372                         continue;
 373                 }
 374                 prop = umem_zalloc(attr.za_num_integers *
 375                     attr.za_integer_length, UMEM_NOFAIL);
 376                 (void) zap_lookup(os, object, attr.za_name,
 377                     attr.za_integer_length, attr.za_num_integers, prop);
 378                 if (attr.za_integer_length == 1) {
 379                         (void) printf("%s", (char *)prop);
 380                 } else {
 381                         for (i = 0; i < attr.za_num_integers; i++) {
 382                                 switch (attr.za_integer_length) {
 383                                 case 2:
 384                                         (void) printf("%u ",
 385                                             ((uint16_t *)prop)[i]);
 386                                         break;
 387                                 case 4:
 388                                         (void) printf("%u ",
 389                                             ((uint32_t *)prop)[i]);
 390                                         break;
 391                                 case 8:
 392                                         (void) printf("%lld ",
 393                                             (u_longlong_t)((int64_t *)prop)[i]);
 394                                         break;
 395                                 }
 396                         }
 397                 }
 398                 (void) printf("\n");
 399                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 400         }
 401         zap_cursor_fini(&zc);
 402 }
 403 
 404 /*ARGSUSED*/
 405 static void
 406 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 407 {
 408         dump_zap_stats(os, object);
 409         /* contents are printed elsewhere, properly decoded */
 410 }
 411 
 412 /*ARGSUSED*/
 413 static void
 414 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 415 {
 416         zap_cursor_t zc;
 417         zap_attribute_t attr;
 418 
 419         dump_zap_stats(os, object);
 420         (void) printf("\n");
 421 
 422         for (zap_cursor_init(&zc, os, object);
 423             zap_cursor_retrieve(&zc, &attr) == 0;
 424             zap_cursor_advance(&zc)) {
 425                 (void) printf("\t\t%s = ", attr.za_name);
 426                 if (attr.za_num_integers == 0) {
 427                         (void) printf("\n");
 428                         continue;
 429                 }
 430                 (void) printf(" %llx : [%d:%d:%d]\n",
 431                     (u_longlong_t)attr.za_first_integer,
 432                     (int)ATTR_LENGTH(attr.za_first_integer),
 433                     (int)ATTR_BSWAP(attr.za_first_integer),
 434                     (int)ATTR_NUM(attr.za_first_integer));
 435         }
 436         zap_cursor_fini(&zc);
 437 }
 438 
 439 /*ARGSUSED*/
 440 static void
 441 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 442 {
 443         zap_cursor_t zc;
 444         zap_attribute_t attr;
 445         uint16_t *layout_attrs;
 446         int i;
 447 
 448         dump_zap_stats(os, object);
 449         (void) printf("\n");
 450 
 451         for (zap_cursor_init(&zc, os, object);
 452             zap_cursor_retrieve(&zc, &attr) == 0;
 453             zap_cursor_advance(&zc)) {
 454                 (void) printf("\t\t%s = [", attr.za_name);
 455                 if (attr.za_num_integers == 0) {
 456                         (void) printf("\n");
 457                         continue;
 458                 }
 459 
 460                 VERIFY(attr.za_integer_length == 2);
 461                 layout_attrs = umem_zalloc(attr.za_num_integers *
 462                     attr.za_integer_length, UMEM_NOFAIL);
 463 
 464                 VERIFY(zap_lookup(os, object, attr.za_name,
 465                     attr.za_integer_length,
 466                     attr.za_num_integers, layout_attrs) == 0);
 467 
 468                 for (i = 0; i != attr.za_num_integers; i++)
 469                         (void) printf(" %d ", (int)layout_attrs[i]);
 470                 (void) printf("]\n");
 471                 umem_free(layout_attrs,
 472                     attr.za_num_integers * attr.za_integer_length);
 473         }
 474         zap_cursor_fini(&zc);
 475 }
 476 
 477 /*ARGSUSED*/
 478 static void
 479 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 480 {
 481         zap_cursor_t zc;
 482         zap_attribute_t attr;
 483         const char *typenames[] = {
 484                 /* 0 */ "not specified",
 485                 /* 1 */ "FIFO",
 486                 /* 2 */ "Character Device",
 487                 /* 3 */ "3 (invalid)",
 488                 /* 4 */ "Directory",
 489                 /* 5 */ "5 (invalid)",
 490                 /* 6 */ "Block Device",
 491                 /* 7 */ "7 (invalid)",
 492                 /* 8 */ "Regular File",
 493                 /* 9 */ "9 (invalid)",
 494                 /* 10 */ "Symbolic Link",
 495                 /* 11 */ "11 (invalid)",
 496                 /* 12 */ "Socket",
 497                 /* 13 */ "Door",
 498                 /* 14 */ "Event Port",
 499                 /* 15 */ "15 (invalid)",
 500         };
 501 
 502         dump_zap_stats(os, object);
 503         (void) printf("\n");
 504 
 505         for (zap_cursor_init(&zc, os, object);
 506             zap_cursor_retrieve(&zc, &attr) == 0;
 507             zap_cursor_advance(&zc)) {
 508                 (void) printf("\t\t%s = %lld (type: %s)\n",
 509                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 510                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 511         }
 512         zap_cursor_fini(&zc);
 513 }
 514 
 515 static void
 516 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 517 {
 518         uint64_t alloc, offset, entry;
 519         uint8_t mapshift = sm->sm_shift;
 520         uint64_t mapstart = sm->sm_start;
 521         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 522                             "INVALID", "INVALID", "INVALID", "INVALID" };
 523 
 524         if (smo->smo_object == 0)
 525                 return;
 526 
 527         /*
 528          * Print out the freelist entries in both encoded and decoded form.
 529          */
 530         alloc = 0;
 531         for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 532                 VERIFY0(dmu_read(os, smo->smo_object, offset,
 533                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 534                 if (SM_DEBUG_DECODE(entry)) {
 535                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 536                             (u_longlong_t)(offset / sizeof (entry)),
 537                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 538                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 539                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 540                 } else {
 541                         (void) printf("\t    [%6llu]    %c  range:"
 542                             " %010llx-%010llx  size: %06llx\n",
 543                             (u_longlong_t)(offset / sizeof (entry)),
 544                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 545                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 546                             mapshift) + mapstart),
 547                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 548                             mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
 549                             mapshift)),
 550                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 551                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 552                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 553                         else
 554                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 555                 }
 556         }
 557         if (alloc != smo->smo_alloc) {
 558                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 559                     "with space map summary (%llu)\n",
 560                     (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
 561         }
 562 }
 563 
 564 static void
 565 dump_metaslab_stats(metaslab_t *msp)
 566 {
 567         char maxbuf[32];
 568         space_map_t *sm = &msp->ms_map;
 569         avl_tree_t *t = sm->sm_pp_root;
 570         int free_pct = sm->sm_space * 100 / sm->sm_size;
 571 
 572         zdb_nicenum(space_map_maxsize(sm), maxbuf);
 573 
 574         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 575             "segments", avl_numnodes(t), "maxsize", maxbuf,
 576             "freepct", free_pct);
 577 }
 578 
 579 static void
 580 dump_metaslab(metaslab_t *msp)
 581 {
 582         vdev_t *vd = msp->ms_group->mg_vd;
 583         spa_t *spa = vd->vdev_spa;
 584         space_map_t *sm = &msp->ms_map;
 585         space_map_obj_t *smo = &msp->ms_smo;
 586         char freebuf[32];
 587 
 588         zdb_nicenum(sm->sm_size - smo->smo_alloc, freebuf);
 589 
 590         (void) printf(
 591             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 592             (u_longlong_t)(sm->sm_start / sm->sm_size),
 593             (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
 594 
 595         if (dump_opt['m'] > 1 && !dump_opt['L']) {
 596                 mutex_enter(&msp->ms_lock);
 597                 space_map_load_wait(sm);
 598                 if (!sm->sm_loaded)
 599                         VERIFY(space_map_load(sm, zfs_metaslab_ops,
 600                             SM_FREE, smo, spa->spa_meta_objset) == 0);
 601                 dump_metaslab_stats(msp);
 602                 space_map_unload(sm);
 603                 mutex_exit(&msp->ms_lock);
 604         }
 605 
 606         if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
 607                 ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
 608 
 609                 mutex_enter(&msp->ms_lock);
 610                 dump_spacemap(spa->spa_meta_objset, smo, sm);
 611                 mutex_exit(&msp->ms_lock);
 612         }
 613 }
 614 
 615 static void
 616 print_vdev_metaslab_header(vdev_t *vd)
 617 {
 618         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 619             (u_longlong_t)vd->vdev_id,
 620             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 621             "offset", "spacemap", "free");
 622         (void) printf("\t%15s   %19s   %15s   %10s\n",
 623             "---------------", "-------------------",
 624             "---------------", "-------------");
 625 }
 626 
 627 static void
 628 dump_metaslabs(spa_t *spa)
 629 {
 630         vdev_t *vd, *rvd = spa->spa_root_vdev;
 631         uint64_t m, c = 0, children = rvd->vdev_children;
 632 
 633         (void) printf("\nMetaslabs:\n");
 634 
 635         if (!dump_opt['d'] && zopt_objects > 0) {
 636                 c = zopt_object[0];
 637 
 638                 if (c >= children)
 639                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 640 
 641                 if (zopt_objects > 1) {
 642                         vd = rvd->vdev_child[c];
 643                         print_vdev_metaslab_header(vd);
 644 
 645                         for (m = 1; m < zopt_objects; m++) {
 646                                 if (zopt_object[m] < vd->vdev_ms_count)
 647                                         dump_metaslab(
 648                                             vd->vdev_ms[zopt_object[m]]);
 649                                 else
 650                                         (void) fprintf(stderr, "bad metaslab "
 651                                             "number %llu\n",
 652                                             (u_longlong_t)zopt_object[m]);
 653                         }
 654                         (void) printf("\n");
 655                         return;
 656                 }
 657                 children = c + 1;
 658         }
 659         for (; c < children; c++) {
 660                 vd = rvd->vdev_child[c];
 661                 print_vdev_metaslab_header(vd);
 662 
 663                 for (m = 0; m < vd->vdev_ms_count; m++)
 664                         dump_metaslab(vd->vdev_ms[m]);
 665                 (void) printf("\n");
 666         }
 667 }
 668 
 669 static void
 670 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 671 {
 672         const ddt_phys_t *ddp = dde->dde_phys;
 673         const ddt_key_t *ddk = &dde->dde_key;
 674         char *types[4] = { "ditto", "single", "double", "triple" };
 675         char blkbuf[BP_SPRINTF_LEN];
 676         blkptr_t blk;
 677 
 678         for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 679                 if (ddp->ddp_phys_birth == 0)
 680                         continue;
 681                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 682                 sprintf_blkptr(blkbuf, &blk);
 683                 (void) printf("index %llx refcnt %llu %s %s\n",
 684                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 685                     types[p], blkbuf);
 686         }
 687 }
 688 
 689 static void
 690 dump_dedup_ratio(const ddt_stat_t *dds)
 691 {
 692         double rL, rP, rD, D, dedup, compress, copies;
 693 
 694         if (dds->dds_blocks == 0)
 695                 return;
 696 
 697         rL = (double)dds->dds_ref_lsize;
 698         rP = (double)dds->dds_ref_psize;
 699         rD = (double)dds->dds_ref_dsize;
 700         D = (double)dds->dds_dsize;
 701 
 702         dedup = rD / D;
 703         compress = rL / rP;
 704         copies = rD / rP;
 705 
 706         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 707             "dedup * compress / copies = %.2f\n\n",
 708             dedup, compress, copies, dedup * compress / copies);
 709 }
 710 
 711 static void
 712 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 713 {
 714         char name[DDT_NAMELEN];
 715         ddt_entry_t dde;
 716         uint64_t walk = 0;
 717         dmu_object_info_t doi;
 718         uint64_t count, dspace, mspace;
 719         int error;
 720 
 721         error = ddt_object_info(ddt, type, class, &doi);
 722 
 723         if (error == ENOENT)
 724                 return;
 725         ASSERT(error == 0);
 726 
 727         if ((count = ddt_object_count(ddt, type, class)) == 0)
 728                 return;
 729 
 730         dspace = doi.doi_physical_blocks_512 << 9;
 731         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 732 
 733         ddt_object_name(ddt, type, class, name);
 734 
 735         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 736             name,
 737             (u_longlong_t)count,
 738             (u_longlong_t)(dspace / count),
 739             (u_longlong_t)(mspace / count));
 740 
 741         if (dump_opt['D'] < 3)
 742                 return;
 743 
 744         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 745 
 746         if (dump_opt['D'] < 4)
 747                 return;
 748 
 749         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 750                 return;
 751 
 752         (void) printf("%s contents:\n\n", name);
 753 
 754         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 755                 dump_dde(ddt, &dde, walk);
 756 
 757         ASSERT(error == ENOENT);
 758 
 759         (void) printf("\n");
 760 }
 761 
 762 static void
 763 dump_all_ddts(spa_t *spa)
 764 {
 765         ddt_histogram_t ddh_total = { 0 };
 766         ddt_stat_t dds_total = { 0 };
 767 
 768         for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 769                 ddt_t *ddt = spa->spa_ddt[c];
 770                 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
 771                         for (enum ddt_class class = 0; class < DDT_CLASSES;
 772                             class++) {
 773                                 dump_ddt(ddt, type, class);
 774                         }
 775                 }
 776         }
 777 
 778         ddt_get_dedup_stats(spa, &dds_total);
 779 
 780         if (dds_total.dds_blocks == 0) {
 781                 (void) printf("All DDTs are empty\n");
 782                 return;
 783         }
 784 
 785         (void) printf("\n");
 786 
 787         if (dump_opt['D'] > 1) {
 788                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
 789                 ddt_get_dedup_histogram(spa, &ddh_total);
 790                 zpool_dump_ddt(&dds_total, &ddh_total);
 791         }
 792 
 793         dump_dedup_ratio(&dds_total);
 794 }
 795 
 796 static void
 797 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 798 {
 799         char *prefix = (void *)sm;
 800 
 801         (void) printf("%s [%llu,%llu) length %llu\n",
 802             prefix,
 803             (u_longlong_t)start,
 804             (u_longlong_t)(start + size),
 805             (u_longlong_t)(size));
 806 }
 807 
 808 static void
 809 dump_dtl(vdev_t *vd, int indent)
 810 {
 811         spa_t *spa = vd->vdev_spa;
 812         boolean_t required;
 813         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 814         char prefix[256];
 815 
 816         spa_vdev_state_enter(spa, SCL_NONE);
 817         required = vdev_dtl_required(vd);
 818         (void) spa_vdev_state_exit(spa, NULL, 0);
 819 
 820         if (indent == 0)
 821                 (void) printf("\nDirty time logs:\n\n");
 822 
 823         (void) printf("\t%*s%s [%s]\n", indent, "",
 824             vd->vdev_path ? vd->vdev_path :
 825             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 826             required ? "DTL-required" : "DTL-expendable");
 827 
 828         for (int t = 0; t < DTL_TYPES; t++) {
 829                 space_map_t *sm = &vd->vdev_dtl[t];
 830                 if (sm->sm_space == 0)
 831                         continue;
 832                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 833                     indent + 2, "", name[t]);
 834                 mutex_enter(sm->sm_lock);
 835                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 836                 mutex_exit(sm->sm_lock);
 837                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 838                         dump_spacemap(spa->spa_meta_objset,
 839                             &vd->vdev_dtl_smo, sm);
 840         }
 841 
 842         for (int c = 0; c < vd->vdev_children; c++)
 843                 dump_dtl(vd->vdev_child[c], indent + 4);
 844 }
 845 
 846 static void
 847 dump_history(spa_t *spa)
 848 {
 849         nvlist_t **events = NULL;
 850         char buf[SPA_MAXBLOCKSIZE];
 851         uint64_t resid, len, off = 0;
 852         uint_t num = 0;
 853         int error;
 854         time_t tsec;
 855         struct tm t;
 856         char tbuf[30];
 857         char internalstr[MAXPATHLEN];
 858 
 859         do {
 860                 len = sizeof (buf);
 861 
 862                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
 863                         (void) fprintf(stderr, "Unable to read history: "
 864                             "error %d\n", error);
 865                         return;
 866                 }
 867 
 868                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
 869                         break;
 870 
 871                 off -= resid;
 872         } while (len != 0);
 873 
 874         (void) printf("\nHistory:\n");
 875         for (int i = 0; i < num; i++) {
 876                 uint64_t time, txg, ievent;
 877                 char *cmd, *intstr;
 878                 boolean_t printed = B_FALSE;
 879 
 880                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 881                     &time) != 0)
 882                         goto next;
 883                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 884                     &cmd) != 0) {
 885                         if (nvlist_lookup_uint64(events[i],
 886                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
 887                                 goto next;
 888                         verify(nvlist_lookup_uint64(events[i],
 889                             ZPOOL_HIST_TXG, &txg) == 0);
 890                         verify(nvlist_lookup_string(events[i],
 891                             ZPOOL_HIST_INT_STR, &intstr) == 0);
 892                         if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
 893                                 goto next;
 894 
 895                         (void) snprintf(internalstr,
 896                             sizeof (internalstr),
 897                             "[internal %s txg:%lld] %s",
 898                             zfs_history_event_names[ievent], txg,
 899                             intstr);
 900                         cmd = internalstr;
 901                 }
 902                 tsec = time;
 903                 (void) localtime_r(&tsec, &t);
 904                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
 905                 (void) printf("%s %s\n", tbuf, cmd);
 906                 printed = B_TRUE;
 907 
 908 next:
 909                 if (dump_opt['h'] > 1) {
 910                         if (!printed)
 911                                 (void) printf("unrecognized record:\n");
 912                         dump_nvlist(events[i], 2);
 913                 }
 914         }
 915 }
 916 
 917 /*ARGSUSED*/
 918 static void
 919 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 920 {
 921 }
 922 
 923 static uint64_t
 924 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
 925 {
 926         if (dnp == NULL) {
 927                 ASSERT(zb->zb_level < 0);
 928                 if (zb->zb_object == 0)
 929                         return (zb->zb_blkid);
 930                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
 931         }
 932 
 933         ASSERT(zb->zb_level >= 0);
 934 
 935         return ((zb->zb_blkid <<
 936             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 937             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 938 }
 939 
 940 static void
 941 sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
 942 {
 943         const dva_t *dva = bp->blk_dva;
 944         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
 945 
 946         if (dump_opt['b'] >= 5) {
 947                 sprintf_blkptr(blkbuf, bp);
 948                 return;
 949         }
 950 
 951         blkbuf[0] = '\0';
 952 
 953         for (int i = 0; i < ndvas; i++)
 954                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 955                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 956                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 957                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 958 
 959         (void) sprintf(blkbuf + strlen(blkbuf),
 960             "%llxL/%llxP F=%llu B=%llu/%llu",
 961             (u_longlong_t)BP_GET_LSIZE(bp),
 962             (u_longlong_t)BP_GET_PSIZE(bp),
 963             (u_longlong_t)bp->blk_fill,
 964             (u_longlong_t)bp->blk_birth,
 965             (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
 966 }
 967 
 968 static void
 969 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 970     const dnode_phys_t *dnp)
 971 {
 972         char blkbuf[BP_SPRINTF_LEN];
 973         int l;
 974 
 975         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 976         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 977 
 978         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
 979 
 980         ASSERT(zb->zb_level >= 0);
 981 
 982         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 983                 if (l == zb->zb_level) {
 984                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 985                 } else {
 986                         (void) printf(" ");
 987                 }
 988         }
 989 
 990         sprintf_blkptr_compact(blkbuf, bp);
 991         (void) printf("%s\n", blkbuf);
 992 }
 993 
 994 static int
 995 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 996     blkptr_t *bp, const zbookmark_t *zb)
 997 {
 998         int err = 0;
 999 
1000         if (bp->blk_birth == 0)
1001                 return (0);
1002 
1003         print_indirect(bp, zb, dnp);
1004 
1005         if (BP_GET_LEVEL(bp) > 0) {
1006                 uint32_t flags = ARC_WAIT;
1007                 int i;
1008                 blkptr_t *cbp;
1009                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1010                 arc_buf_t *buf;
1011                 uint64_t fill = 0;
1012 
1013                 err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
1014                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1015                 if (err)
1016                         return (err);
1017                 ASSERT(buf->b_data);
1018 
1019                 /* recursively visit blocks below this */
1020                 cbp = buf->b_data;
1021                 for (i = 0; i < epb; i++, cbp++) {
1022                         zbookmark_t czb;
1023 
1024                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1025                             zb->zb_level - 1,
1026                             zb->zb_blkid * epb + i);
1027                         err = visit_indirect(spa, dnp, cbp, &czb);
1028                         if (err)
1029                                 break;
1030                         fill += cbp->blk_fill;
1031                 }
1032                 if (!err)
1033                         ASSERT3U(fill, ==, bp->blk_fill);
1034                 (void) arc_buf_remove_ref(buf, &buf);
1035         }
1036 
1037         return (err);
1038 }
1039 
1040 /*ARGSUSED*/
1041 static void
1042 dump_indirect(dnode_t *dn)
1043 {
1044         dnode_phys_t *dnp = dn->dn_phys;
1045         int j;
1046         zbookmark_t czb;
1047 
1048         (void) printf("Indirect blocks:\n");
1049 
1050         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1051             dn->dn_object, dnp->dn_nlevels - 1, 0);
1052         for (j = 0; j < dnp->dn_nblkptr; j++) {
1053                 czb.zb_blkid = j;
1054                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1055                     &dnp->dn_blkptr[j], &czb);
1056         }
1057 
1058         (void) printf("\n");
1059 }
1060 
1061 /*ARGSUSED*/
1062 static void
1063 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1064 {
1065         dsl_dir_phys_t *dd = data;
1066         time_t crtime;
1067         char nice[32];
1068 
1069         if (dd == NULL)
1070                 return;
1071 
1072         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1073 
1074         crtime = dd->dd_creation_time;
1075         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1076         (void) printf("\t\thead_dataset_obj = %llu\n",
1077             (u_longlong_t)dd->dd_head_dataset_obj);
1078         (void) printf("\t\tparent_dir_obj = %llu\n",
1079             (u_longlong_t)dd->dd_parent_obj);
1080         (void) printf("\t\torigin_obj = %llu\n",
1081             (u_longlong_t)dd->dd_origin_obj);
1082         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1083             (u_longlong_t)dd->dd_child_dir_zapobj);
1084         zdb_nicenum(dd->dd_used_bytes, nice);
1085         (void) printf("\t\tused_bytes = %s\n", nice);
1086         zdb_nicenum(dd->dd_compressed_bytes, nice);
1087         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1088         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1089         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1090         zdb_nicenum(dd->dd_quota, nice);
1091         (void) printf("\t\tquota = %s\n", nice);
1092         zdb_nicenum(dd->dd_reserved, nice);
1093         (void) printf("\t\treserved = %s\n", nice);
1094         (void) printf("\t\tprops_zapobj = %llu\n",
1095             (u_longlong_t)dd->dd_props_zapobj);
1096         (void) printf("\t\tdeleg_zapobj = %llu\n",
1097             (u_longlong_t)dd->dd_deleg_zapobj);
1098         (void) printf("\t\tflags = %llx\n",
1099             (u_longlong_t)dd->dd_flags);
1100 
1101 #define DO(which) \
1102         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1103         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1104         DO(HEAD);
1105         DO(SNAP);
1106         DO(CHILD);
1107         DO(CHILD_RSRV);
1108         DO(REFRSRV);
1109 #undef DO
1110 }
1111 
1112 /*ARGSUSED*/
1113 static void
1114 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1115 {
1116         dsl_dataset_phys_t *ds = data;
1117         time_t crtime;
1118         char used[32], compressed[32], uncompressed[32], unique[32];
1119         char blkbuf[BP_SPRINTF_LEN];
1120 
1121         if (ds == NULL)
1122                 return;
1123 
1124         ASSERT(size == sizeof (*ds));
1125         crtime = ds->ds_creation_time;
1126         zdb_nicenum(ds->ds_referenced_bytes, used);
1127         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1128         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1129         zdb_nicenum(ds->ds_unique_bytes, unique);
1130         sprintf_blkptr(blkbuf, &ds->ds_bp);
1131 
1132         (void) printf("\t\tdir_obj = %llu\n",
1133             (u_longlong_t)ds->ds_dir_obj);
1134         (void) printf("\t\tprev_snap_obj = %llu\n",
1135             (u_longlong_t)ds->ds_prev_snap_obj);
1136         (void) printf("\t\tprev_snap_txg = %llu\n",
1137             (u_longlong_t)ds->ds_prev_snap_txg);
1138         (void) printf("\t\tnext_snap_obj = %llu\n",
1139             (u_longlong_t)ds->ds_next_snap_obj);
1140         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1141             (u_longlong_t)ds->ds_snapnames_zapobj);
1142         (void) printf("\t\tnum_children = %llu\n",
1143             (u_longlong_t)ds->ds_num_children);
1144         (void) printf("\t\tuserrefs_obj = %llu\n",
1145             (u_longlong_t)ds->ds_userrefs_obj);
1146         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1147         (void) printf("\t\tcreation_txg = %llu\n",
1148             (u_longlong_t)ds->ds_creation_txg);
1149         (void) printf("\t\tdeadlist_obj = %llu\n",
1150             (u_longlong_t)ds->ds_deadlist_obj);
1151         (void) printf("\t\tused_bytes = %s\n", used);
1152         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1153         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1154         (void) printf("\t\tunique = %s\n", unique);
1155         (void) printf("\t\tfsid_guid = %llu\n",
1156             (u_longlong_t)ds->ds_fsid_guid);
1157         (void) printf("\t\tguid = %llu\n",
1158             (u_longlong_t)ds->ds_guid);
1159         (void) printf("\t\tflags = %llx\n",
1160             (u_longlong_t)ds->ds_flags);
1161         (void) printf("\t\tnext_clones_obj = %llu\n",
1162             (u_longlong_t)ds->ds_next_clones_obj);
1163         (void) printf("\t\tprops_obj = %llu\n",
1164             (u_longlong_t)ds->ds_props_obj);
1165         (void) printf("\t\tbp = %s\n", blkbuf);
1166 }
1167 
1168 /* ARGSUSED */
1169 static int
1170 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1171 {
1172         char blkbuf[BP_SPRINTF_LEN];
1173 
1174         if (bp->blk_birth != 0) {
1175                 sprintf_blkptr(blkbuf, bp);
1176                 (void) printf("\t%s\n", blkbuf);
1177         }
1178         return (0);
1179 }
1180 
1181 static void
1182 dump_bptree(objset_t *os, uint64_t obj, char *name)
1183 {
1184         char bytes[32];
1185         bptree_phys_t *bt;
1186         dmu_buf_t *db;
1187 
1188         if (dump_opt['d'] < 3)
1189                 return;
1190 
1191         VERIFY0(dmu_bonus_hold(os, obj, FTAG, &db));
1192         bt = db->db_data;
1193         zdb_nicenum(bt->bt_bytes, bytes);
1194         (void) printf("\n    %s: %llu datasets, %s\n",
1195             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1196         dmu_buf_rele(db, FTAG);
1197 
1198         if (dump_opt['d'] < 5)
1199                 return;
1200 
1201         (void) printf("\n");
1202 
1203         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1204 }
1205 
1206 /* ARGSUSED */
1207 static int
1208 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1209 {
1210         char blkbuf[BP_SPRINTF_LEN];
1211 
1212         ASSERT(bp->blk_birth != 0);
1213         sprintf_blkptr_compact(blkbuf, bp);
1214         (void) printf("\t%s\n", blkbuf);
1215         return (0);
1216 }
1217 
1218 static void
1219 dump_bpobj(bpobj_t *bpo, char *name)
1220 {
1221         char bytes[32];
1222         char comp[32];
1223         char uncomp[32];
1224 
1225         if (dump_opt['d'] < 3)
1226                 return;
1227 
1228         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1229         if (bpo->bpo_havesubobj) {
1230                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1231                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1232                 (void) printf("\n    %s: %llu local blkptrs, %llu subobjs, "
1233                     "%s (%s/%s comp)\n",
1234                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1235                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1236                     bytes, comp, uncomp);
1237         } else {
1238                 (void) printf("\n    %s: %llu blkptrs, %s\n",
1239                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, bytes);
1240         }
1241 
1242         if (dump_opt['d'] < 5)
1243                 return;
1244 
1245         (void) printf("\n");
1246 
1247         (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1248 }
1249 
1250 static void
1251 dump_deadlist(dsl_deadlist_t *dl)
1252 {
1253         dsl_deadlist_entry_t *dle;
1254         char bytes[32];
1255         char comp[32];
1256         char uncomp[32];
1257 
1258         if (dump_opt['d'] < 3)
1259                 return;
1260 
1261         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1262         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1263         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1264         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1265             bytes, comp, uncomp);
1266 
1267         if (dump_opt['d'] < 4)
1268                 return;
1269 
1270         (void) printf("\n");
1271 
1272         for (dle = avl_first(&dl->dl_tree); dle;
1273             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1274                 (void) printf("      mintxg %llu -> obj %llu\n",
1275                     (longlong_t)dle->dle_mintxg,
1276                     (longlong_t)dle->dle_bpobj.bpo_object);
1277 
1278                 if (dump_opt['d'] >= 5)
1279                         dump_bpobj(&dle->dle_bpobj, "");
1280         }
1281 }
1282 
1283 static avl_tree_t idx_tree;
1284 static avl_tree_t domain_tree;
1285 static boolean_t fuid_table_loaded;
1286 static boolean_t sa_loaded;
1287 sa_attr_type_t *sa_attr_table;
1288 
1289 static void
1290 fuid_table_destroy()
1291 {
1292         if (fuid_table_loaded) {
1293                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1294                 fuid_table_loaded = B_FALSE;
1295         }
1296 }
1297 
1298 /*
1299  * print uid or gid information.
1300  * For normal POSIX id just the id is printed in decimal format.
1301  * For CIFS files with FUID the fuid is printed in hex followed by
1302  * the doman-rid string.
1303  */
1304 static void
1305 print_idstr(uint64_t id, const char *id_type)
1306 {
1307         if (FUID_INDEX(id)) {
1308                 char *domain;
1309 
1310                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1311                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1312                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1313         } else {
1314                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1315         }
1316 
1317 }
1318 
1319 static void
1320 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1321 {
1322         uint32_t uid_idx, gid_idx;
1323 
1324         uid_idx = FUID_INDEX(uid);
1325         gid_idx = FUID_INDEX(gid);
1326 
1327         /* Load domain table, if not already loaded */
1328         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1329                 uint64_t fuid_obj;
1330 
1331                 /* first find the fuid object.  It lives in the master node */
1332                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1333                     8, 1, &fuid_obj) == 0);
1334                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1335                 (void) zfs_fuid_table_load(os, fuid_obj,
1336                     &idx_tree, &domain_tree);
1337                 fuid_table_loaded = B_TRUE;
1338         }
1339 
1340         print_idstr(uid, "uid");
1341         print_idstr(gid, "gid");
1342 }
1343 
1344 /*ARGSUSED*/
1345 static void
1346 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1347 {
1348         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1349         sa_handle_t *hdl;
1350         uint64_t xattr, rdev, gen;
1351         uint64_t uid, gid, mode, fsize, parent, links;
1352         uint64_t pflags;
1353         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1354         time_t z_crtime, z_atime, z_mtime, z_ctime;
1355         sa_bulk_attr_t bulk[12];
1356         int idx = 0;
1357         int error;
1358 
1359         if (!sa_loaded) {
1360                 uint64_t sa_attrs = 0;
1361                 uint64_t version;
1362 
1363                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1364                     8, 1, &version) == 0);
1365                 if (version >= ZPL_VERSION_SA) {
1366                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1367                             8, 1, &sa_attrs) == 0);
1368                 }
1369                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1370                     ZPL_END, &sa_attr_table)) != 0) {
1371                         (void) printf("sa_setup failed errno %d, can't "
1372                             "display znode contents\n", error);
1373                         return;
1374                 }
1375                 sa_loaded = B_TRUE;
1376         }
1377 
1378         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1379                 (void) printf("Failed to get handle for SA znode\n");
1380                 return;
1381         }
1382 
1383         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1384         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1385         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1386             &links, 8);
1387         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1388         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1389             &mode, 8);
1390         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1391             NULL, &parent, 8);
1392         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1393             &fsize, 8);
1394         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1395             acctm, 16);
1396         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1397             modtm, 16);
1398         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1399             crtm, 16);
1400         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1401             chgtm, 16);
1402         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1403             &pflags, 8);
1404 
1405         if (sa_bulk_lookup(hdl, bulk, idx)) {
1406                 (void) sa_handle_destroy(hdl);
1407                 return;
1408         }
1409 
1410         error = zfs_obj_to_path(os, object, path, sizeof (path));
1411         if (error != 0) {
1412                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1413                     (u_longlong_t)object);
1414         }
1415         if (dump_opt['d'] < 3) {
1416                 (void) printf("\t%s\n", path);
1417                 (void) sa_handle_destroy(hdl);
1418                 return;
1419         }
1420 
1421         z_crtime = (time_t)crtm[0];
1422         z_atime = (time_t)acctm[0];
1423         z_mtime = (time_t)modtm[0];
1424         z_ctime = (time_t)chgtm[0];
1425 
1426         (void) printf("\tpath   %s\n", path);
1427         dump_uidgid(os, uid, gid);
1428         (void) printf("\tatime  %s", ctime(&z_atime));
1429         (void) printf("\tmtime  %s", ctime(&z_mtime));
1430         (void) printf("\tctime  %s", ctime(&z_ctime));
1431         (void) printf("\tcrtime %s", ctime(&z_crtime));
1432         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1433         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1434         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1435         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1436         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1437         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1438         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1439             sizeof (uint64_t)) == 0)
1440                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1441         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1442             sizeof (uint64_t)) == 0)
1443                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1444         sa_handle_destroy(hdl);
1445 }
1446 
1447 /*ARGSUSED*/
1448 static void
1449 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1450 {
1451 }
1452 
1453 /*ARGSUSED*/
1454 static void
1455 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1456 {
1457 }
1458 
1459 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1460         dump_none,              /* unallocated                  */
1461         dump_zap,               /* object directory             */
1462         dump_uint64,            /* object array                 */
1463         dump_none,              /* packed nvlist                */
1464         dump_packed_nvlist,     /* packed nvlist size           */
1465         dump_none,              /* bplist                       */
1466         dump_none,              /* bplist header                */
1467         dump_none,              /* SPA space map header         */
1468         dump_none,              /* SPA space map                */
1469         dump_none,              /* ZIL intent log               */
1470         dump_dnode,             /* DMU dnode                    */
1471         dump_dmu_objset,        /* DMU objset                   */
1472         dump_dsl_dir,           /* DSL directory                */
1473         dump_zap,               /* DSL directory child map      */
1474         dump_zap,               /* DSL dataset snap map         */
1475         dump_zap,               /* DSL props                    */
1476         dump_dsl_dataset,       /* DSL dataset                  */
1477         dump_znode,             /* ZFS znode                    */
1478         dump_acl,               /* ZFS V0 ACL                   */
1479         dump_uint8,             /* ZFS plain file               */
1480         dump_zpldir,            /* ZFS directory                */
1481         dump_zap,               /* ZFS master node              */
1482         dump_zap,               /* ZFS delete queue             */
1483         dump_uint8,             /* zvol object                  */
1484         dump_zap,               /* zvol prop                    */
1485         dump_uint8,             /* other uint8[]                */
1486         dump_uint64,            /* other uint64[]               */
1487         dump_zap,               /* other ZAP                    */
1488         dump_zap,               /* persistent error log         */
1489         dump_uint8,             /* SPA history                  */
1490         dump_history_offsets,   /* SPA history offsets          */
1491         dump_zap,               /* Pool properties              */
1492         dump_zap,               /* DSL permissions              */
1493         dump_acl,               /* ZFS ACL                      */
1494         dump_uint8,             /* ZFS SYSACL                   */
1495         dump_none,              /* FUID nvlist                  */
1496         dump_packed_nvlist,     /* FUID nvlist size             */
1497         dump_zap,               /* DSL dataset next clones      */
1498         dump_zap,               /* DSL scrub queue              */
1499         dump_zap,               /* ZFS user/group used          */
1500         dump_zap,               /* ZFS user/group quota         */
1501         dump_zap,               /* snapshot refcount tags       */
1502         dump_ddt_zap,           /* DDT ZAP object               */
1503         dump_zap,               /* DDT statistics               */
1504         dump_znode,             /* SA object                    */
1505         dump_zap,               /* SA Master Node               */
1506         dump_sa_attrs,          /* SA attribute registration    */
1507         dump_sa_layouts,        /* SA attribute layouts         */
1508         dump_zap,               /* DSL scrub translations       */
1509         dump_none,              /* fake dedup BP                */
1510         dump_zap,               /* deadlist                     */
1511         dump_none,              /* deadlist hdr                 */
1512         dump_zap,               /* dsl clones                   */
1513         dump_none,              /* bpobj subobjs                */
1514         dump_unknown,           /* Unknown type, must be last   */
1515 };
1516 
1517 static void
1518 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1519 {
1520         dmu_buf_t *db = NULL;
1521         dmu_object_info_t doi;
1522         dnode_t *dn;
1523         void *bonus = NULL;
1524         size_t bsize = 0;
1525         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1526         char bonus_size[32];
1527         char aux[50];
1528         int error;
1529 
1530         if (*print_header) {
1531                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1532                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1533                     "%full", "type");
1534                 *print_header = 0;
1535         }
1536 
1537         if (object == 0) {
1538                 dn = DMU_META_DNODE(os);
1539         } else {
1540                 error = dmu_bonus_hold(os, object, FTAG, &db);
1541                 if (error)
1542                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1543                             object, error);
1544                 bonus = db->db_data;
1545                 bsize = db->db_size;
1546                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1547         }
1548         dmu_object_info_from_dnode(dn, &doi);
1549 
1550         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1551         zdb_nicenum(doi.doi_data_block_size, dblk);
1552         zdb_nicenum(doi.doi_max_offset, lsize);
1553         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1554         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1555         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1556             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1557             doi.doi_max_offset);
1558 
1559         aux[0] = '\0';
1560 
1561         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1562                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1563                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1564         }
1565 
1566         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1567                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1568                     ZDB_COMPRESS_NAME(doi.doi_compress));
1569         }
1570 
1571         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1572             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1573             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1574 
1575         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1576                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1577                     "", "", "", "", "", bonus_size, "bonus",
1578                     ZDB_OT_NAME(doi.doi_bonus_type));
1579         }
1580 
1581         if (verbosity >= 4) {
1582                 (void) printf("\tdnode flags: %s%s%s\n",
1583                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1584                     "USED_BYTES " : "",
1585                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1586                     "USERUSED_ACCOUNTED " : "",
1587                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1588                     "SPILL_BLKPTR" : "");
1589                 (void) printf("\tdnode maxblkid: %llu\n",
1590                     (longlong_t)dn->dn_phys->dn_maxblkid);
1591 
1592                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1593                     bonus, bsize);
1594                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1595                 *print_header = 1;
1596         }
1597 
1598         if (verbosity >= 5)
1599                 dump_indirect(dn);
1600 
1601         if (verbosity >= 5) {
1602                 /*
1603                  * Report the list of segments that comprise the object.
1604                  */
1605                 uint64_t start = 0;
1606                 uint64_t end;
1607                 uint64_t blkfill = 1;
1608                 int minlvl = 1;
1609 
1610                 if (dn->dn_type == DMU_OT_DNODE) {
1611                         minlvl = 0;
1612                         blkfill = DNODES_PER_BLOCK;
1613                 }
1614 
1615                 for (;;) {
1616                         char segsize[32];
1617                         error = dnode_next_offset(dn,
1618                             0, &start, minlvl, blkfill, 0);
1619                         if (error)
1620                                 break;
1621                         end = start;
1622                         error = dnode_next_offset(dn,
1623                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1624                         zdb_nicenum(end - start, segsize);
1625                         (void) printf("\t\tsegment [%016llx, %016llx)"
1626                             " size %5s\n", (u_longlong_t)start,
1627                             (u_longlong_t)end, segsize);
1628                         if (error)
1629                                 break;
1630                         start = end;
1631                 }
1632         }
1633 
1634         if (db != NULL)
1635                 dmu_buf_rele(db, FTAG);
1636 }
1637 
1638 static char *objset_types[DMU_OST_NUMTYPES] = {
1639         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1640 
1641 static void
1642 dump_dir(objset_t *os)
1643 {
1644         dmu_objset_stats_t dds;
1645         uint64_t object, object_count;
1646         uint64_t refdbytes, usedobjs, scratch;
1647         char numbuf[32];
1648         char blkbuf[BP_SPRINTF_LEN + 20];
1649         char osname[MAXNAMELEN];
1650         char *type = "UNKNOWN";
1651         int verbosity = dump_opt['d'];
1652         int print_header = 1;
1653         int i, error;
1654 
1655         dmu_objset_fast_stat(os, &dds);
1656 
1657         if (dds.dds_type < DMU_OST_NUMTYPES)
1658                 type = objset_types[dds.dds_type];
1659 
1660         if (dds.dds_type == DMU_OST_META) {
1661                 dds.dds_creation_txg = TXG_INITIAL;
1662                 usedobjs = os->os_rootbp->blk_fill;
1663                 refdbytes = os->os_spa->spa_dsl_pool->
1664                     dp_mos_dir->dd_phys->dd_used_bytes;
1665         } else {
1666                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1667         }
1668 
1669         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1670 
1671         zdb_nicenum(refdbytes, numbuf);
1672 
1673         if (verbosity >= 4) {
1674                 (void) sprintf(blkbuf, ", rootbp ");
1675                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1676         } else {
1677                 blkbuf[0] = '\0';
1678         }
1679 
1680         dmu_objset_name(os, osname);
1681 
1682         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1683             "%s, %llu objects%s\n",
1684             osname, type, (u_longlong_t)dmu_objset_id(os),
1685             (u_longlong_t)dds.dds_creation_txg,
1686             numbuf, (u_longlong_t)usedobjs, blkbuf);
1687 
1688         if (zopt_objects != 0) {
1689                 for (i = 0; i < zopt_objects; i++)
1690                         dump_object(os, zopt_object[i], verbosity,
1691                             &print_header);
1692                 (void) printf("\n");
1693                 return;
1694         }
1695 
1696         if (dump_opt['i'] != 0 || verbosity >= 2)
1697                 dump_intent_log(dmu_objset_zil(os));
1698 
1699         if (dmu_objset_ds(os) != NULL)
1700                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1701 
1702         if (verbosity < 2)
1703                 return;
1704 
1705         if (os->os_rootbp->blk_birth == 0)
1706                 return;
1707 
1708         dump_object(os, 0, verbosity, &print_header);
1709         object_count = 0;
1710         if (DMU_USERUSED_DNODE(os) != NULL &&
1711             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1712                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1713                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1714         }
1715 
1716         object = 0;
1717         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1718                 dump_object(os, object, verbosity, &print_header);
1719                 object_count++;
1720         }
1721 
1722         ASSERT3U(object_count, ==, usedobjs);
1723 
1724         (void) printf("\n");
1725 
1726         if (error != ESRCH) {
1727                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1728                 abort();
1729         }
1730 }
1731 
1732 static void
1733 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1734 {
1735         time_t timestamp = ub->ub_timestamp;
1736 
1737         (void) printf(header ? header : "");
1738         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1739         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1740         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1741         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1742         (void) printf("\ttimestamp = %llu UTC = %s",
1743             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1744         if (dump_opt['u'] >= 3) {
1745                 char blkbuf[BP_SPRINTF_LEN];
1746                 sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1747                 (void) printf("\trootbp = %s\n", blkbuf);
1748         }
1749         (void) printf(footer ? footer : "");
1750 }
1751 
1752 static void
1753 dump_config(spa_t *spa)
1754 {
1755         dmu_buf_t *db;
1756         size_t nvsize = 0;
1757         int error = 0;
1758 
1759 
1760         error = dmu_bonus_hold(spa->spa_meta_objset,
1761             spa->spa_config_object, FTAG, &db);
1762 
1763         if (error == 0) {
1764                 nvsize = *(uint64_t *)db->db_data;
1765                 dmu_buf_rele(db, FTAG);
1766 
1767                 (void) printf("\nMOS Configuration:\n");
1768                 dump_packed_nvlist(spa->spa_meta_objset,
1769                     spa->spa_config_object, (void *)&nvsize, 1);
1770         } else {
1771                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1772                     (u_longlong_t)spa->spa_config_object, error);
1773         }
1774 }
1775 
1776 static void
1777 dump_cachefile(const char *cachefile)
1778 {
1779         int fd;
1780         struct stat64 statbuf;
1781         char *buf;
1782         nvlist_t *config;
1783 
1784         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1785                 (void) printf("cannot open '%s': %s\n", cachefile,
1786                     strerror(errno));
1787                 exit(1);
1788         }
1789 
1790         if (fstat64(fd, &statbuf) != 0) {
1791                 (void) printf("failed to stat '%s': %s\n", cachefile,
1792                     strerror(errno));
1793                 exit(1);
1794         }
1795 
1796         if ((buf = malloc(statbuf.st_size)) == NULL) {
1797                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1798                     (u_longlong_t)statbuf.st_size);
1799                 exit(1);
1800         }
1801 
1802         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1803                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1804                     (u_longlong_t)statbuf.st_size);
1805                 exit(1);
1806         }
1807 
1808         (void) close(fd);
1809 
1810         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1811                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1812                 exit(1);
1813         }
1814 
1815         free(buf);
1816 
1817         dump_nvlist(config, 0);
1818 
1819         nvlist_free(config);
1820 }
1821 
1822 #define ZDB_MAX_UB_HEADER_SIZE 32
1823 
1824 static void
1825 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1826 {
1827         vdev_t vd;
1828         vdev_t *vdp = &vd;
1829         char header[ZDB_MAX_UB_HEADER_SIZE];
1830 
1831         vd.vdev_ashift = ashift;
1832         vdp->vdev_top = vdp;
1833 
1834         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1835                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1836                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1837 
1838                 if (uberblock_verify(ub))
1839                         continue;
1840                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1841                     "Uberblock[%d]\n", i);
1842                 dump_uberblock(ub, header, "");
1843         }
1844 }
1845 
1846 static void
1847 dump_label(const char *dev)
1848 {
1849         int fd;
1850         vdev_label_t label;
1851         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1852         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1853         struct stat64 statbuf;
1854         uint64_t psize, ashift;
1855         int len = strlen(dev) + 1;
1856 
1857         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1858                 len++;
1859                 path = malloc(len);
1860                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1861         } else {
1862                 path = strdup(dev);
1863         }
1864 
1865         if ((fd = open64(path, O_RDONLY)) < 0) {
1866                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
1867                 free(path);
1868                 exit(1);
1869         }
1870 
1871         if (fstat64(fd, &statbuf) != 0) {
1872                 (void) printf("failed to stat '%s': %s\n", path,
1873                     strerror(errno));
1874                 free(path);
1875                 (void) close(fd);
1876                 exit(1);
1877         }
1878 
1879         if (S_ISBLK(statbuf.st_mode)) {
1880                 (void) printf("cannot use '%s': character device required\n",
1881                     path);
1882                 free(path);
1883                 (void) close(fd);
1884                 exit(1);
1885         }
1886 
1887         psize = statbuf.st_size;
1888         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1889 
1890         for (int l = 0; l < VDEV_LABELS; l++) {
1891                 nvlist_t *config = NULL;
1892 
1893                 (void) printf("--------------------------------------------\n");
1894                 (void) printf("LABEL %d\n", l);
1895                 (void) printf("--------------------------------------------\n");
1896 
1897                 if (pread64(fd, &label, sizeof (label),
1898                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1899                         (void) printf("failed to read label %d\n", l);
1900                         continue;
1901                 }
1902 
1903                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1904                         (void) printf("failed to unpack label %d\n", l);
1905                         ashift = SPA_MINBLOCKSHIFT;
1906                 } else {
1907                         nvlist_t *vdev_tree = NULL;
1908 
1909                         dump_nvlist(config, 4);
1910                         if ((nvlist_lookup_nvlist(config,
1911                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1912                             (nvlist_lookup_uint64(vdev_tree,
1913                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1914                                 ashift = SPA_MINBLOCKSHIFT;
1915                         nvlist_free(config);
1916                 }
1917                 if (dump_opt['u'])
1918                         dump_label_uberblocks(&label, ashift);
1919         }
1920 
1921         free(path);
1922         (void) close(fd);
1923 }
1924 
1925 /*ARGSUSED*/
1926 static int
1927 dump_one_dir(const char *dsname, void *arg)
1928 {
1929         int error;
1930         objset_t *os;
1931 
1932         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1933         if (error) {
1934                 (void) printf("Could not open %s, error %d\n", dsname, error);
1935                 return (0);
1936         }
1937         dump_dir(os);
1938         dmu_objset_disown(os, FTAG);
1939         fuid_table_destroy();
1940         sa_loaded = B_FALSE;
1941         return (0);
1942 }
1943 
1944 /*
1945  * Block statistics.
1946  */
1947 typedef struct zdb_blkstats {
1948         uint64_t        zb_asize;
1949         uint64_t        zb_lsize;
1950         uint64_t        zb_psize;
1951         uint64_t        zb_count;
1952 } zdb_blkstats_t;
1953 
1954 /*
1955  * Extended object types to report deferred frees and dedup auto-ditto blocks.
1956  */
1957 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
1958 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
1959 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
1960 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
1961 
1962 static char *zdb_ot_extname[] = {
1963         "deferred free",
1964         "dedup ditto",
1965         "other",
1966         "Total",
1967 };
1968 
1969 #define ZB_TOTAL        DN_MAX_LEVELS
1970 
1971 typedef struct zdb_cb {
1972         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1973         uint64_t        zcb_dedup_asize;
1974         uint64_t        zcb_dedup_blocks;
1975         uint64_t        zcb_errors[256];
1976         int             zcb_readfails;
1977         int             zcb_haderrors;
1978         spa_t           *zcb_spa;
1979 } zdb_cb_t;
1980 
1981 static void
1982 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
1983     dmu_object_type_t type)
1984 {
1985         uint64_t refcnt = 0;
1986 
1987         ASSERT(type < ZDB_OT_TOTAL);
1988 
1989         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1990                 return;
1991 
1992         for (int i = 0; i < 4; i++) {
1993                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1994                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
1995                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1996 
1997                 zb->zb_asize += BP_GET_ASIZE(bp);
1998                 zb->zb_lsize += BP_GET_LSIZE(bp);
1999                 zb->zb_psize += BP_GET_PSIZE(bp);
2000                 zb->zb_count++;
2001         }
2002 
2003         if (dump_opt['L'])
2004                 return;
2005 
2006         if (BP_GET_DEDUP(bp)) {
2007                 ddt_t *ddt;
2008                 ddt_entry_t *dde;
2009 
2010                 ddt = ddt_select(zcb->zcb_spa, bp);
2011                 ddt_enter(ddt);
2012                 dde = ddt_lookup(ddt, bp, B_FALSE);
2013 
2014                 if (dde == NULL) {
2015                         refcnt = 0;
2016                 } else {
2017                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2018                         ddt_phys_decref(ddp);
2019                         refcnt = ddp->ddp_refcnt;
2020                         if (ddt_phys_total_refcnt(dde) == 0)
2021                                 ddt_remove(ddt, dde);
2022                 }
2023                 ddt_exit(ddt);
2024         }
2025 
2026         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2027             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2028             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2029 }
2030 
2031 /* ARGSUSED */
2032 static int
2033 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
2034     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2035 {
2036         zdb_cb_t *zcb = arg;
2037         char blkbuf[BP_SPRINTF_LEN];
2038         dmu_object_type_t type;
2039         boolean_t is_metadata;
2040 
2041         if (bp == NULL)
2042                 return (0);
2043 
2044         type = BP_GET_TYPE(bp);
2045 
2046         zdb_count_block(zcb, zilog, bp,
2047             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2048 
2049         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2050 
2051         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2052                 int ioerr;
2053                 size_t size = BP_GET_PSIZE(bp);
2054                 void *data = malloc(size);
2055                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2056 
2057                 /* If it's an intent log block, failure is expected. */
2058                 if (zb->zb_level == ZB_ZIL_LEVEL)
2059                         flags |= ZIO_FLAG_SPECULATIVE;
2060 
2061                 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
2062                     NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2063 
2064                 free(data);
2065 
2066                 if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) {
2067                         zcb->zcb_haderrors = 1;
2068                         zcb->zcb_errors[ioerr]++;
2069 
2070                         if (dump_opt['b'] >= 2)
2071                                 sprintf_blkptr(blkbuf, bp);
2072                         else
2073                                 blkbuf[0] = '\0';
2074 
2075                         (void) printf("zdb_blkptr_cb: "
2076                             "Got error %d reading "
2077                             "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2078                             ioerr,
2079                             (u_longlong_t)zb->zb_objset,
2080                             (u_longlong_t)zb->zb_object,
2081                             (u_longlong_t)zb->zb_level,
2082                             (u_longlong_t)zb->zb_blkid,
2083                             blkbuf);
2084                 }
2085         }
2086 
2087         zcb->zcb_readfails = 0;
2088 
2089         if (dump_opt['b'] >= 4) {
2090                 sprintf_blkptr(blkbuf, bp);
2091                 (void) printf("objset %llu object %llu "
2092                     "level %lld offset 0x%llx %s\n",
2093                     (u_longlong_t)zb->zb_objset,
2094                     (u_longlong_t)zb->zb_object,
2095                     (longlong_t)zb->zb_level,
2096                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2097                     blkbuf);
2098         }
2099 
2100         return (0);
2101 }
2102 
2103 static void
2104 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2105 {
2106         vdev_t *vd = sm->sm_ppd;
2107 
2108         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2109             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2110 }
2111 
2112 /* ARGSUSED */
2113 static void
2114 zdb_space_map_load(space_map_t *sm)
2115 {
2116 }
2117 
2118 static void
2119 zdb_space_map_unload(space_map_t *sm)
2120 {
2121         space_map_vacate(sm, zdb_leak, sm);
2122 }
2123 
2124 /* ARGSUSED */
2125 static void
2126 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2127 {
2128 }
2129 
2130 static space_map_ops_t zdb_space_map_ops = {
2131         zdb_space_map_load,
2132         zdb_space_map_unload,
2133         NULL,   /* alloc */
2134         zdb_space_map_claim,
2135         NULL,   /* free */
2136         NULL    /* maxsize */
2137 };
2138 
2139 static void
2140 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2141 {
2142         ddt_bookmark_t ddb = { 0 };
2143         ddt_entry_t dde;
2144         int error;
2145 
2146         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2147                 blkptr_t blk;
2148                 ddt_phys_t *ddp = dde.dde_phys;
2149 
2150                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2151                         return;
2152 
2153                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2154 
2155                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2156                         if (ddp->ddp_phys_birth == 0)
2157                                 continue;
2158                         ddt_bp_create(ddb.ddb_checksum,
2159                             &dde.dde_key, ddp, &blk);
2160                         if (p == DDT_PHYS_DITTO) {
2161                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2162                         } else {
2163                                 zcb->zcb_dedup_asize +=
2164                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2165                                 zcb->zcb_dedup_blocks++;
2166                         }
2167                 }
2168                 if (!dump_opt['L']) {
2169                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2170                         ddt_enter(ddt);
2171                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2172                         ddt_exit(ddt);
2173                 }
2174         }
2175 
2176         ASSERT(error == ENOENT);
2177 }
2178 
2179 static void
2180 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2181 {
2182         zcb->zcb_spa = spa;
2183 
2184         if (!dump_opt['L']) {
2185                 vdev_t *rvd = spa->spa_root_vdev;
2186                 for (int c = 0; c < rvd->vdev_children; c++) {
2187                         vdev_t *vd = rvd->vdev_child[c];
2188                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2189                                 metaslab_t *msp = vd->vdev_ms[m];
2190                                 mutex_enter(&msp->ms_lock);
2191                                 space_map_unload(&msp->ms_map);
2192                                 VERIFY(space_map_load(&msp->ms_map,
2193                                     &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2194                                     spa->spa_meta_objset) == 0);
2195                                 msp->ms_map.sm_ppd = vd;
2196                                 mutex_exit(&msp->ms_lock);
2197                         }
2198                 }
2199         }
2200 
2201         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2202 
2203         zdb_ddt_leak_init(spa, zcb);
2204 
2205         spa_config_exit(spa, SCL_CONFIG, FTAG);
2206 }
2207 
2208 static void
2209 zdb_leak_fini(spa_t *spa)
2210 {
2211         if (!dump_opt['L']) {
2212                 vdev_t *rvd = spa->spa_root_vdev;
2213                 for (int c = 0; c < rvd->vdev_children; c++) {
2214                         vdev_t *vd = rvd->vdev_child[c];
2215                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2216                                 metaslab_t *msp = vd->vdev_ms[m];
2217                                 mutex_enter(&msp->ms_lock);
2218                                 space_map_unload(&msp->ms_map);
2219                                 mutex_exit(&msp->ms_lock);
2220                         }
2221                 }
2222         }
2223 }
2224 
2225 /* ARGSUSED */
2226 static int
2227 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2228 {
2229         zdb_cb_t *zcb = arg;
2230 
2231         if (dump_opt['b'] >= 4) {
2232                 char blkbuf[BP_SPRINTF_LEN];
2233                 sprintf_blkptr(blkbuf, bp);
2234                 (void) printf("[%s] %s\n",
2235                     "deferred free", blkbuf);
2236         }
2237         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2238         return (0);
2239 }
2240 
2241 static int
2242 dump_block_stats(spa_t *spa)
2243 {
2244         zdb_cb_t zcb = { 0 };
2245         zdb_blkstats_t *zb, *tzb;
2246         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2247         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2248         int leaks = 0;
2249 
2250         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
2251             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2252             (dump_opt['c'] == 1) ? "metadata " : "",
2253             dump_opt['c'] ? "checksums " : "",
2254             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2255             !dump_opt['L'] ? "nothing leaked " : "");
2256 
2257         /*
2258          * Load all space maps as SM_ALLOC maps, then traverse the pool
2259          * claiming each block we discover.  If the pool is perfectly
2260          * consistent, the space maps will be empty when we're done.
2261          * Anything left over is a leak; any block we can't claim (because
2262          * it's not part of any space map) is a double allocation,
2263          * reference to a freed block, or an unclaimed log block.
2264          */
2265         zdb_leak_init(spa, &zcb);
2266 
2267         /*
2268          * If there's a deferred-free bplist, process that first.
2269          */
2270         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2271             count_block_cb, &zcb, NULL);
2272         (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2273             count_block_cb, &zcb, NULL);
2274         if (spa_feature_is_active(spa,
2275             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2276                 VERIFY0(bptree_iterate(spa->spa_meta_objset,
2277                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2278                     &zcb, NULL));
2279         }
2280 
2281         if (dump_opt['c'] > 1)
2282                 flags |= TRAVERSE_PREFETCH_DATA;
2283 
2284         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2285 
2286         if (zcb.zcb_haderrors) {
2287                 (void) printf("\nError counts:\n\n");
2288                 (void) printf("\t%5s  %s\n", "errno", "count");
2289                 for (int e = 0; e < 256; e++) {
2290                         if (zcb.zcb_errors[e] != 0) {
2291                                 (void) printf("\t%5d  %llu\n",
2292                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2293                         }
2294                 }
2295         }
2296 
2297         /*
2298          * Report any leaked segments.
2299          */
2300         zdb_leak_fini(spa);
2301 
2302         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2303 
2304         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2305         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2306 
2307         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2308         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2309 
2310         if (total_found == total_alloc) {
2311                 if (!dump_opt['L'])
2312                         (void) printf("\n\tNo leaks (block sum matches space"
2313                             " maps exactly)\n");
2314         } else {
2315                 (void) printf("block traversal size %llu != alloc %llu "
2316                     "(%s %lld)\n",
2317                     (u_longlong_t)total_found,
2318                     (u_longlong_t)total_alloc,
2319                     (dump_opt['L']) ? "unreachable" : "leaked",
2320                     (longlong_t)(total_alloc - total_found));
2321                 leaks = 1;
2322         }
2323 
2324         if (tzb->zb_count == 0)
2325                 return (2);
2326 
2327         (void) printf("\n");
2328         (void) printf("\tbp count:      %10llu\n",
2329             (u_longlong_t)tzb->zb_count);
2330         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2331             (u_longlong_t)tzb->zb_lsize,
2332             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2333         (void) printf("\tbp physical:   %10llu      avg:"
2334             " %6llu     compression: %6.2f\n",
2335             (u_longlong_t)tzb->zb_psize,
2336             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2337             (double)tzb->zb_lsize / tzb->zb_psize);
2338         (void) printf("\tbp allocated:  %10llu      avg:"
2339             " %6llu     compression: %6.2f\n",
2340             (u_longlong_t)tzb->zb_asize,
2341             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2342             (double)tzb->zb_lsize / tzb->zb_asize);
2343         (void) printf("\tbp deduped:    %10llu    ref>1:"
2344             " %6llu   deduplication: %6.2f\n",
2345             (u_longlong_t)zcb.zcb_dedup_asize,
2346             (u_longlong_t)zcb.zcb_dedup_blocks,
2347             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2348         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2349             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2350 
2351         if (dump_opt['b'] >= 2) {
2352                 int l, t, level;
2353                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2354                     "\t  avg\t comp\t%%Total\tType\n");
2355 
2356                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2357                         char csize[32], lsize[32], psize[32], asize[32];
2358                         char avg[32];
2359                         char *typename;
2360 
2361                         if (t < DMU_OT_NUMTYPES)
2362                                 typename = dmu_ot[t].ot_name;
2363                         else
2364                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2365 
2366                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2367                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2368                                     "\t%5s\t%5s\t%6s\t%s\n",
2369                                     "-",
2370                                     "-",
2371                                     "-",
2372                                     "-",
2373                                     "-",
2374                                     "-",
2375                                     "-",
2376                                     typename);
2377                                 continue;
2378                         }
2379 
2380                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2381                                 level = (l == -1 ? ZB_TOTAL : l);
2382                                 zb = &zcb.zcb_type[level][t];
2383 
2384                                 if (zb->zb_asize == 0)
2385                                         continue;
2386 
2387                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2388                                         continue;
2389 
2390                                 if (level == 0 && zb->zb_asize ==
2391                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2392                                         continue;
2393 
2394                                 zdb_nicenum(zb->zb_count, csize);
2395                                 zdb_nicenum(zb->zb_lsize, lsize);
2396                                 zdb_nicenum(zb->zb_psize, psize);
2397                                 zdb_nicenum(zb->zb_asize, asize);
2398                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2399 
2400                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2401                                     "\t%5.2f\t%6.2f\t",
2402                                     csize, lsize, psize, asize, avg,
2403                                     (double)zb->zb_lsize / zb->zb_psize,
2404                                     100.0 * zb->zb_asize / tzb->zb_asize);
2405 
2406                                 if (level == ZB_TOTAL)
2407                                         (void) printf("%s\n", typename);
2408                                 else
2409                                         (void) printf("    L%d %s\n",
2410                                             level, typename);
2411                         }
2412                 }
2413         }
2414 
2415         (void) printf("\n");
2416 
2417         if (leaks)
2418                 return (2);
2419 
2420         if (zcb.zcb_haderrors)
2421                 return (3);
2422 
2423         return (0);
2424 }
2425 
2426 typedef struct zdb_ddt_entry {
2427         ddt_key_t       zdde_key;
2428         uint64_t        zdde_ref_blocks;
2429         uint64_t        zdde_ref_lsize;
2430         uint64_t        zdde_ref_psize;
2431         uint64_t        zdde_ref_dsize;
2432         avl_node_t      zdde_node;
2433 } zdb_ddt_entry_t;
2434 
2435 /* ARGSUSED */
2436 static int
2437 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2438     arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2439 {
2440         avl_tree_t *t = arg;
2441         avl_index_t where;
2442         zdb_ddt_entry_t *zdde, zdde_search;
2443 
2444         if (bp == NULL)
2445                 return (0);
2446 
2447         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2448                 (void) printf("traversing objset %llu, %llu objects, "
2449                     "%lu blocks so far\n",
2450                     (u_longlong_t)zb->zb_objset,
2451                     (u_longlong_t)bp->blk_fill,
2452                     avl_numnodes(t));
2453         }
2454 
2455         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2456             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2457                 return (0);
2458 
2459         ddt_key_fill(&zdde_search.zdde_key, bp);
2460 
2461         zdde = avl_find(t, &zdde_search, &where);
2462 
2463         if (zdde == NULL) {
2464                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2465                 zdde->zdde_key = zdde_search.zdde_key;
2466                 avl_insert(t, zdde, where);
2467         }
2468 
2469         zdde->zdde_ref_blocks += 1;
2470         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2471         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2472         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2473 
2474         return (0);
2475 }
2476 
2477 static void
2478 dump_simulated_ddt(spa_t *spa)
2479 {
2480         avl_tree_t t;
2481         void *cookie = NULL;
2482         zdb_ddt_entry_t *zdde;
2483         ddt_histogram_t ddh_total = { 0 };
2484         ddt_stat_t dds_total = { 0 };
2485 
2486         avl_create(&t, ddt_entry_compare,
2487             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2488 
2489         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2490 
2491         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2492             zdb_ddt_add_cb, &t);
2493 
2494         spa_config_exit(spa, SCL_CONFIG, FTAG);
2495 
2496         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2497                 ddt_stat_t dds;
2498                 uint64_t refcnt = zdde->zdde_ref_blocks;
2499                 ASSERT(refcnt != 0);
2500 
2501                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2502                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2503                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2504                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2505 
2506                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2507                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2508                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2509                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2510 
2511                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2512 
2513                 umem_free(zdde, sizeof (*zdde));
2514         }
2515 
2516         avl_destroy(&t);
2517 
2518         ddt_histogram_stat(&dds_total, &ddh_total);
2519 
2520         (void) printf("Simulated DDT histogram:\n");
2521 
2522         zpool_dump_ddt(&dds_total, &ddh_total);
2523 
2524         dump_dedup_ratio(&dds_total);
2525 }
2526 
2527 static void
2528 dump_zpool(spa_t *spa)
2529 {
2530         dsl_pool_t *dp = spa_get_dsl(spa);
2531         int rc = 0;
2532 
2533         if (dump_opt['S']) {
2534                 dump_simulated_ddt(spa);
2535                 return;
2536         }
2537 
2538         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2539                 (void) printf("\nCached configuration:\n");
2540                 dump_nvlist(spa->spa_config, 8);
2541         }
2542 
2543         if (dump_opt['C'])
2544                 dump_config(spa);
2545 
2546         if (dump_opt['u'])
2547                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2548 
2549         if (dump_opt['D'])
2550                 dump_all_ddts(spa);
2551 
2552         if (dump_opt['d'] > 2 || dump_opt['m'])
2553                 dump_metaslabs(spa);
2554 
2555         if (dump_opt['d'] || dump_opt['i']) {
2556                 dump_dir(dp->dp_meta_objset);
2557                 if (dump_opt['d'] >= 3) {
2558                         dump_bpobj(&spa->spa_deferred_bpobj, "Deferred frees");
2559                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2560                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2561                                     "Pool snapshot frees");
2562                         }
2563 
2564                         if (spa_feature_is_active(spa,
2565                             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2566                                 dump_bptree(spa->spa_meta_objset,
2567                                     spa->spa_dsl_pool->dp_bptree_obj,
2568                                     "Pool dataset frees");
2569                         }
2570                         dump_dtl(spa->spa_root_vdev, 0);
2571                 }
2572                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2573                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2574         }
2575         if (dump_opt['b'] || dump_opt['c'])
2576                 rc = dump_block_stats(spa);
2577 
2578         if (dump_opt['s'])
2579                 show_pool_stats(spa);
2580 
2581         if (dump_opt['h'])
2582                 dump_history(spa);
2583 
2584         if (rc != 0)
2585                 exit(rc);
2586 }
2587 
2588 #define ZDB_FLAG_CHECKSUM       0x0001
2589 #define ZDB_FLAG_DECOMPRESS     0x0002
2590 #define ZDB_FLAG_BSWAP          0x0004
2591 #define ZDB_FLAG_GBH            0x0008
2592 #define ZDB_FLAG_INDIRECT       0x0010
2593 #define ZDB_FLAG_PHYS           0x0020
2594 #define ZDB_FLAG_RAW            0x0040
2595 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2596 
2597 int flagbits[256];
2598 
2599 static void
2600 zdb_print_blkptr(blkptr_t *bp, int flags)
2601 {
2602         char blkbuf[BP_SPRINTF_LEN];
2603 
2604         if (flags & ZDB_FLAG_BSWAP)
2605                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2606 
2607         sprintf_blkptr(blkbuf, bp);
2608         (void) printf("%s\n", blkbuf);
2609 }
2610 
2611 static void
2612 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2613 {
2614         int i;
2615 
2616         for (i = 0; i < nbps; i++)
2617                 zdb_print_blkptr(&bp[i], flags);
2618 }
2619 
2620 static void
2621 zdb_dump_gbh(void *buf, int flags)
2622 {
2623         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2624 }
2625 
2626 static void
2627 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2628 {
2629         if (flags & ZDB_FLAG_BSWAP)
2630                 byteswap_uint64_array(buf, size);
2631         (void) write(1, buf, size);
2632 }
2633 
2634 static void
2635 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2636 {
2637         uint64_t *d = (uint64_t *)buf;
2638         int nwords = size / sizeof (uint64_t);
2639         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2640         int i, j;
2641         char *hdr, *c;
2642 
2643 
2644         if (do_bswap)
2645                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2646         else
2647                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2648 
2649         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2650 
2651         for (i = 0; i < nwords; i += 2) {
2652                 (void) printf("%06llx:  %016llx  %016llx  ",
2653                     (u_longlong_t)(i * sizeof (uint64_t)),
2654                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2655                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2656 
2657                 c = (char *)&d[i];
2658                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2659                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2660                 (void) printf("\n");
2661         }
2662 }
2663 
2664 /*
2665  * There are two acceptable formats:
2666  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2667  *      child[.child]*    - For example: 0.1.1
2668  *
2669  * The second form can be used to specify arbitrary vdevs anywhere
2670  * in the heirarchy.  For example, in a pool with a mirror of
2671  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2672  */
2673 static vdev_t *
2674 zdb_vdev_lookup(vdev_t *vdev, char *path)
2675 {
2676         char *s, *p, *q;
2677         int i;
2678 
2679         if (vdev == NULL)
2680                 return (NULL);
2681 
2682         /* First, assume the x.x.x.x format */
2683         i = (int)strtoul(path, &s, 10);
2684         if (s == path || (s && *s != '.' && *s != '\0'))
2685                 goto name;
2686         if (i < 0 || i >= vdev->vdev_children)
2687                 return (NULL);
2688 
2689         vdev = vdev->vdev_child[i];
2690         if (*s == '\0')
2691                 return (vdev);
2692         return (zdb_vdev_lookup(vdev, s+1));
2693 
2694 name:
2695         for (i = 0; i < vdev->vdev_children; i++) {
2696                 vdev_t *vc = vdev->vdev_child[i];
2697 
2698                 if (vc->vdev_path == NULL) {
2699                         vc = zdb_vdev_lookup(vc, path);
2700                         if (vc == NULL)
2701                                 continue;
2702                         else
2703                                 return (vc);
2704                 }
2705 
2706                 p = strrchr(vc->vdev_path, '/');
2707                 p = p ? p + 1 : vc->vdev_path;
2708                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2709 
2710                 if (strcmp(vc->vdev_path, path) == 0)
2711                         return (vc);
2712                 if (strcmp(p, path) == 0)
2713                         return (vc);
2714                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2715                         return (vc);
2716         }
2717 
2718         return (NULL);
2719 }
2720 
2721 /*
2722  * Read a block from a pool and print it out.  The syntax of the
2723  * block descriptor is:
2724  *
2725  *      pool:vdev_specifier:offset:size[:flags]
2726  *
2727  *      pool           - The name of the pool you wish to read from
2728  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2729  *      offset         - offset, in hex, in bytes
2730  *      size           - Amount of data to read, in hex, in bytes
2731  *      flags          - A string of characters specifying options
2732  *               b: Decode a blkptr at given offset within block
2733  *              *c: Calculate and display checksums
2734  *               d: Decompress data before dumping
2735  *               e: Byteswap data before dumping
2736  *               g: Display data as a gang block header
2737  *               i: Display as an indirect block
2738  *               p: Do I/O to physical offset
2739  *               r: Dump raw data to stdout
2740  *
2741  *              * = not yet implemented
2742  */
2743 static void
2744 zdb_read_block(char *thing, spa_t *spa)
2745 {
2746         blkptr_t blk, *bp = &blk;
2747         dva_t *dva = bp->blk_dva;
2748         int flags = 0;
2749         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2750         zio_t *zio;
2751         vdev_t *vd;
2752         void *pbuf, *lbuf, *buf;
2753         char *s, *p, *dup, *vdev, *flagstr;
2754         int i, error;
2755 
2756         dup = strdup(thing);
2757         s = strtok(dup, ":");
2758         vdev = s ? s : "";
2759         s = strtok(NULL, ":");
2760         offset = strtoull(s ? s : "", NULL, 16);
2761         s = strtok(NULL, ":");
2762         size = strtoull(s ? s : "", NULL, 16);
2763         s = strtok(NULL, ":");
2764         flagstr = s ? s : "";
2765 
2766         s = NULL;
2767         if (size == 0)
2768                 s = "size must not be zero";
2769         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2770                 s = "size must be a multiple of sector size";
2771         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2772                 s = "offset must be a multiple of sector size";
2773         if (s) {
2774                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2775                 free(dup);
2776                 return;
2777         }
2778 
2779         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2780                 for (i = 0; flagstr[i]; i++) {
2781                         int bit = flagbits[(uchar_t)flagstr[i]];
2782 
2783                         if (bit == 0) {
2784                                 (void) printf("***Invalid flag: %c\n",
2785                                     flagstr[i]);
2786                                 continue;
2787                         }
2788                         flags |= bit;
2789 
2790                         /* If it's not something with an argument, keep going */
2791                         if ((bit & (ZDB_FLAG_CHECKSUM |
2792                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2793                                 continue;
2794 
2795                         p = &flagstr[i + 1];
2796                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2797                                 blkptr_offset = strtoull(p, &p, 16);
2798                         if (*p != ':' && *p != '\0') {
2799                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2800                                 free(dup);
2801                                 return;
2802                         }
2803                 }
2804         }
2805 
2806         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2807         if (vd == NULL) {
2808                 (void) printf("***Invalid vdev: %s\n", vdev);
2809                 free(dup);
2810                 return;
2811         } else {
2812                 if (vd->vdev_path)
2813                         (void) fprintf(stderr, "Found vdev: %s\n",
2814                             vd->vdev_path);
2815                 else
2816                         (void) fprintf(stderr, "Found vdev type: %s\n",
2817                             vd->vdev_ops->vdev_op_type);
2818         }
2819 
2820         psize = size;
2821         lsize = size;
2822 
2823         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2824         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2825 
2826         BP_ZERO(bp);
2827 
2828         DVA_SET_VDEV(&dva[0], vd->vdev_id);
2829         DVA_SET_OFFSET(&dva[0], offset);
2830         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2831         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2832 
2833         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2834 
2835         BP_SET_LSIZE(bp, lsize);
2836         BP_SET_PSIZE(bp, psize);
2837         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2838         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2839         BP_SET_TYPE(bp, DMU_OT_NONE);
2840         BP_SET_LEVEL(bp, 0);
2841         BP_SET_DEDUP(bp, 0);
2842         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2843 
2844         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2845         zio = zio_root(spa, NULL, NULL, 0);
2846 
2847         if (vd == vd->vdev_top) {
2848                 /*
2849                  * Treat this as a normal block read.
2850                  */
2851                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2852                     ZIO_PRIORITY_SYNC_READ,
2853                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2854         } else {
2855                 /*
2856                  * Treat this as a vdev child I/O.
2857                  */
2858                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2859                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2860                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2861                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2862                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2863         }
2864 
2865         error = zio_wait(zio);
2866         spa_config_exit(spa, SCL_STATE, FTAG);
2867 
2868         if (error) {
2869                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2870                 goto out;
2871         }
2872 
2873         if (flags & ZDB_FLAG_DECOMPRESS) {
2874                 /*
2875                  * We don't know how the data was compressed, so just try
2876                  * every decompress function at every inflated blocksize.
2877                  */
2878                 enum zio_compress c;
2879                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2880                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2881 
2882                 bcopy(pbuf, pbuf2, psize);
2883 
2884                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2885                     SPA_MAXBLOCKSIZE - psize) == 0);
2886 
2887                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2888                     SPA_MAXBLOCKSIZE - psize) == 0);
2889 
2890                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2891                     lsize -= SPA_MINBLOCKSIZE) {
2892                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2893                                 if (zio_decompress_data(c, pbuf, lbuf,
2894                                     psize, lsize) == 0 &&
2895                                     zio_decompress_data(c, pbuf2, lbuf2,
2896                                     psize, lsize) == 0 &&
2897                                     bcmp(lbuf, lbuf2, lsize) == 0)
2898                                         break;
2899                         }
2900                         if (c != ZIO_COMPRESS_FUNCTIONS)
2901                                 break;
2902                         lsize -= SPA_MINBLOCKSIZE;
2903                 }
2904 
2905                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2906                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2907 
2908                 if (lsize <= psize) {
2909                         (void) printf("Decompress of %s failed\n", thing);
2910                         goto out;
2911                 }
2912                 buf = lbuf;
2913                 size = lsize;
2914         } else {
2915                 buf = pbuf;
2916                 size = psize;
2917         }
2918 
2919         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2920                 zdb_print_blkptr((blkptr_t *)(void *)
2921                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2922         else if (flags & ZDB_FLAG_RAW)
2923                 zdb_dump_block_raw(buf, size, flags);
2924         else if (flags & ZDB_FLAG_INDIRECT)
2925                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2926                     flags);
2927         else if (flags & ZDB_FLAG_GBH)
2928                 zdb_dump_gbh(buf, flags);
2929         else
2930                 zdb_dump_block(thing, buf, size, flags);
2931 
2932 out:
2933         umem_free(pbuf, SPA_MAXBLOCKSIZE);
2934         umem_free(lbuf, SPA_MAXBLOCKSIZE);
2935         free(dup);
2936 }
2937 
2938 static boolean_t
2939 pool_match(nvlist_t *cfg, char *tgt)
2940 {
2941         uint64_t v, guid = strtoull(tgt, NULL, 0);
2942         char *s;
2943 
2944         if (guid != 0) {
2945                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2946                         return (v == guid);
2947         } else {
2948                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2949                         return (strcmp(s, tgt) == 0);
2950         }
2951         return (B_FALSE);
2952 }
2953 
2954 static char *
2955 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2956 {
2957         nvlist_t *pools;
2958         nvlist_t *match = NULL;
2959         char *name = NULL;
2960         char *sepp = NULL;
2961         char sep;
2962         int count = 0;
2963         importargs_t args = { 0 };
2964 
2965         args.paths = dirc;
2966         args.path = dirv;
2967         args.can_be_active = B_TRUE;
2968 
2969         if ((sepp = strpbrk(*target, "/@")) != NULL) {
2970                 sep = *sepp;
2971                 *sepp = '\0';
2972         }
2973 
2974         pools = zpool_search_import(g_zfs, &args);
2975 
2976         if (pools != NULL) {
2977                 nvpair_t *elem = NULL;
2978                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2979                         verify(nvpair_value_nvlist(elem, configp) == 0);
2980                         if (pool_match(*configp, *target)) {
2981                                 count++;
2982                                 if (match != NULL) {
2983                                         /* print previously found config */
2984                                         if (name != NULL) {
2985                                                 (void) printf("%s\n", name);
2986                                                 dump_nvlist(match, 8);
2987                                                 name = NULL;
2988                                         }
2989                                         (void) printf("%s\n",
2990                                             nvpair_name(elem));
2991                                         dump_nvlist(*configp, 8);
2992                                 } else {
2993                                         match = *configp;
2994                                         name = nvpair_name(elem);
2995                                 }
2996                         }
2997                 }
2998         }
2999         if (count > 1)
3000                 (void) fatal("\tMatched %d pools - use pool GUID "
3001                     "instead of pool name or \n"
3002                     "\tpool name part of a dataset name to select pool", count);
3003 
3004         if (sepp)
3005                 *sepp = sep;
3006         /*
3007          * If pool GUID was specified for pool id, replace it with pool name
3008          */
3009         if (name && (strstr(*target, name) != *target)) {
3010                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3011 
3012                 *target = umem_alloc(sz, UMEM_NOFAIL);
3013                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3014         }
3015 
3016         *configp = name ? match : NULL;
3017 
3018         return (name);
3019 }
3020 
3021 int
3022 main(int argc, char **argv)
3023 {
3024         int i, c;
3025         struct rlimit rl = { 1024, 1024 };
3026         spa_t *spa = NULL;
3027         objset_t *os = NULL;
3028         int dump_all = 1;
3029         int verbose = 0;
3030         int error = 0;
3031         char **searchdirs = NULL;
3032         int nsearch = 0;
3033         char *target;
3034         nvlist_t *policy = NULL;
3035         uint64_t max_txg = UINT64_MAX;
3036         int rewind = ZPOOL_NEVER_REWIND;
3037 
3038         (void) setrlimit(RLIMIT_NOFILE, &rl);
3039         (void) enable_extended_FILE_stdio(-1, -1);
3040 
3041         dprintf_setup(&argc, argv);
3042 
3043         while ((c = getopt(argc, argv, "bcdhilmsuCDRSAFLXevp:t:U:P")) != -1) {
3044                 switch (c) {
3045                 case 'b':
3046                 case 'c':
3047                 case 'd':
3048                 case 'h':
3049                 case 'i':
3050                 case 'l':
3051                 case 'm':
3052                 case 's':
3053                 case 'u':
3054                 case 'C':
3055                 case 'D':
3056                 case 'R':
3057                 case 'S':
3058                         dump_opt[c]++;
3059                         dump_all = 0;
3060                         break;
3061                 case 'A':
3062                 case 'F':
3063                 case 'L':
3064                 case 'X':
3065                 case 'e':
3066                 case 'P':
3067                         dump_opt[c]++;
3068                         break;
3069                 case 'v':
3070                         verbose++;
3071                         break;
3072                 case 'p':
3073                         if (searchdirs == NULL) {
3074                                 searchdirs = umem_alloc(sizeof (char *),
3075                                     UMEM_NOFAIL);
3076                         } else {
3077                                 char **tmp = umem_alloc((nsearch + 1) *
3078                                     sizeof (char *), UMEM_NOFAIL);
3079                                 bcopy(searchdirs, tmp, nsearch *
3080                                     sizeof (char *));
3081                                 umem_free(searchdirs,
3082                                     nsearch * sizeof (char *));
3083                                 searchdirs = tmp;
3084                         }
3085                         searchdirs[nsearch++] = optarg;
3086                         break;
3087                 case 't':
3088                         max_txg = strtoull(optarg, NULL, 0);
3089                         if (max_txg < TXG_INITIAL) {
3090                                 (void) fprintf(stderr, "incorrect txg "
3091                                     "specified: %s\n", optarg);
3092                                 usage();
3093                         }
3094                         break;
3095                 case 'U':
3096                         spa_config_path = optarg;
3097                         break;
3098                 default:
3099                         usage();
3100                         break;
3101                 }
3102         }
3103 
3104         if (!dump_opt['e'] && searchdirs != NULL) {
3105                 (void) fprintf(stderr, "-p option requires use of -e\n");
3106                 usage();
3107         }
3108 
3109         kernel_init(FREAD);
3110         g_zfs = libzfs_init();
3111         ASSERT(g_zfs != NULL);
3112 
3113         if (dump_all)
3114                 verbose = MAX(verbose, 1);
3115 
3116         for (c = 0; c < 256; c++) {
3117                 if (dump_all && !strchr("elAFLRSXP", c))
3118                         dump_opt[c] = 1;
3119                 if (dump_opt[c])
3120                         dump_opt[c] += verbose;
3121         }
3122 
3123         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3124         zfs_recover = (dump_opt['A'] > 1);
3125 
3126         argc -= optind;
3127         argv += optind;
3128 
3129         if (argc < 2 && dump_opt['R'])
3130                 usage();
3131         if (argc < 1) {
3132                 if (!dump_opt['e'] && dump_opt['C']) {
3133                         dump_cachefile(spa_config_path);
3134                         return (0);
3135                 }
3136                 usage();
3137         }
3138 
3139         if (dump_opt['l']) {
3140                 dump_label(argv[0]);
3141                 return (0);
3142         }
3143 
3144         if (dump_opt['X'] || dump_opt['F'])
3145                 rewind = ZPOOL_DO_REWIND |
3146                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3147 
3148         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3149             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3150             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3151                 fatal("internal error: %s", strerror(ENOMEM));
3152 
3153         error = 0;
3154         target = argv[0];
3155 
3156         if (dump_opt['e']) {
3157                 nvlist_t *cfg = NULL;
3158                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3159 
3160                 error = ENOENT;
3161                 if (name) {
3162                         if (dump_opt['C'] > 1) {
3163                                 (void) printf("\nConfiguration for import:\n");
3164                                 dump_nvlist(cfg, 8);
3165                         }
3166                         if (nvlist_add_nvlist(cfg,
3167                             ZPOOL_REWIND_POLICY, policy) != 0) {
3168                                 fatal("can't open '%s': %s",
3169                                     target, strerror(ENOMEM));
3170                         }
3171                         if ((error = spa_import(name, cfg, NULL,
3172                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3173                                 error = spa_import(name, cfg, NULL,
3174                                     ZFS_IMPORT_VERBATIM);
3175                         }
3176                 }
3177         }
3178 
3179         if (error == 0) {
3180                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3181                         error = spa_open_rewind(target, &spa, FTAG, policy,
3182                             NULL);
3183                         if (error) {
3184                                 /*
3185                                  * If we're missing the log device then
3186                                  * try opening the pool after clearing the
3187                                  * log state.
3188                                  */
3189                                 mutex_enter(&spa_namespace_lock);
3190                                 if ((spa = spa_lookup(target)) != NULL &&
3191                                     spa->spa_log_state == SPA_LOG_MISSING) {
3192                                         spa->spa_log_state = SPA_LOG_CLEAR;
3193                                         error = 0;
3194                                 }
3195                                 mutex_exit(&spa_namespace_lock);
3196 
3197                                 if (!error) {
3198                                         error = spa_open_rewind(target, &spa,
3199                                             FTAG, policy, NULL);
3200                                 }
3201                         }
3202                 } else {
3203                         error = dmu_objset_own(target, DMU_OST_ANY,
3204                             B_TRUE, FTAG, &os);
3205                 }
3206         }
3207         nvlist_free(policy);
3208 
3209         if (error)
3210                 fatal("can't open '%s': %s", target, strerror(error));
3211 
3212         argv++;
3213         argc--;
3214         if (!dump_opt['R']) {
3215                 if (argc > 0) {
3216                         zopt_objects = argc;
3217                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3218                         for (i = 0; i < zopt_objects; i++) {
3219                                 errno = 0;
3220                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3221                                 if (zopt_object[i] == 0 && errno != 0)
3222                                         fatal("bad number %s: %s",
3223                                             argv[i], strerror(errno));
3224                         }
3225                 }
3226                 (os != NULL) ? dump_dir(os) : dump_zpool(spa);
3227         } else {
3228                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3229                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3230                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3231                 flagbits['e'] = ZDB_FLAG_BSWAP;
3232                 flagbits['g'] = ZDB_FLAG_GBH;
3233                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3234                 flagbits['p'] = ZDB_FLAG_PHYS;
3235                 flagbits['r'] = ZDB_FLAG_RAW;
3236 
3237                 for (i = 0; i < argc; i++)
3238                         zdb_read_block(argv[i], spa);
3239         }
3240 
3241         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3242 
3243         fuid_table_destroy();
3244         sa_loaded = B_FALSE;
3245 
3246         libzfs_fini(g_zfs);
3247         kernel_fini();
3248 
3249         return (0);
3250 }