cddl/contrib/opensolaris/cmd/zdb/zdb.c

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