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) :             \
  72         (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
  73         DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
  74
  75 #ifndef lint
  76 extern int zfs_recover;
  77 #else
  78 int zfs_recover;
  79 #endif
  80
  81 const char cmdname[] = "zdb";
  82 uint8_t dump_opt[256];
  83
  84 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  85
  86 extern void dump_intent_log(zilog_t *);
  87 uint64_t *zopt_object = NULL;
  88 int zopt_objects = 0;
  89 libzfs_handle_t *g_zfs;
  90
  91 /*
  92  * These libumem hooks provide a reasonable set of defaults for the allocator's
  93  * debugging facilities.
  94  */
  95 const char *
  96 _umem_debug_init()
  97 {
  98         return ("default,verbose"); /* $UMEM_DEBUG setting */
  99 }
 100
 101 const char *
 102 _umem_logging_init(void)
 103 {
 104         return ("fail,contents"); /* $UMEM_LOGGING setting */
 105 }
 106
 107 static void
 108 usage(void)
 109 {
 110         (void) fprintf(stderr,
 111             "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]]"
 112             "poolname [object...]\n"
 113             "       %s [-divPA] [-e -p path...] dataset [object...]\n"
 114             "       %s -m [-LXFPA] [-t txg] [-e [-p path...]]"
 115             "poolname [vdev [metaslab...]]\n"
 116             "       %s -R [-A] [-e [-p path...]] poolname "
 117             "vdev:offset:size[:flags]\n"
 118             "       %s -S [-PA] [-e [-p path...]] poolname\n"
 119             "       %s -l [-uA] device\n"
 120             "       %s -C [-A] [-U config]\n\n",
 121             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 122
 123         (void) fprintf(stderr, "    Dataset name must include at least one "
 124             "separator character '/' or '@'\n");
 125         (void) fprintf(stderr, "    If dataset name is specified, only that "
 126             "dataset is dumped\n");
 127         (void) fprintf(stderr, "    If object numbers are specified, only "
 128             "those objects are dumped\n\n");
 129         (void) fprintf(stderr, "    Options to control amount of output:\n");
 130         (void) fprintf(stderr, "        -u uberblock\n");
 131         (void) fprintf(stderr, "        -d dataset(s)\n");
 132         (void) fprintf(stderr, "        -i intent logs\n");
 133         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 134         (void) fprintf(stderr, "        -h pool history\n");
 135         (void) fprintf(stderr, "        -b block statistics\n");
 136         (void) fprintf(stderr, "        -m metaslabs\n");
 137         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 138             "all data) blocks\n");
 139         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 140         (void) fprintf(stderr, "        -D dedup statistics\n");
 141         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 142         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 143         (void) fprintf(stderr, "        -l dump label contents\n");
 144         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 145             "load spacemaps)\n");
 146         (void) fprintf(stderr, "        -R read and display block from a "
 147             "device\n\n");
 148         (void) fprintf(stderr, "    Below options are intended for use "
 149             "with other options (except -l):\n");
 150         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 151             "panic recovery (-AA) or both (-AAA)\n");
 152         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 153             "safe range of transaction groups\n");
 154         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 155             "cachefile\n");
 156         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 157             "work with dataset)\n");
 158         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 159             "has altroot/not in a cachefile\n");
 160         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 161             "-e to specify path to vdev dir\n");
 162         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 163         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 164             "searching for uberblocks\n");
 165         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 166             "to make only that option verbose\n");
 167         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 168         exit(1);
 169 }
 170
 171 /*
 172  * Called for usage errors that are discovered after a call to spa_open(),
 173  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 174  */
 175
 176 static void
 177 fatal(const char *fmt, ...)
 178 {
 179         va_list ap;
 180
 181         va_start(ap, fmt);
 182         (void) fprintf(stderr, "%s: ", cmdname);
 183         (void) vfprintf(stderr, fmt, ap);
 184         va_end(ap);
 185         (void) fprintf(stderr, "\n");
 186
 187         exit(1);
 188 }
 189
 190 /* ARGSUSED */
 191 static void
 192 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 193 {
 194         nvlist_t *nv;
 195         size_t nvsize = *(uint64_t *)data;
 196         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 197
 198         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 199
 200         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 201
 202         umem_free(packed, nvsize);
 203
 204         dump_nvlist(nv, 8);
 205
 206         nvlist_free(nv);
 207 }
 208
 209 static void
 210 zdb_nicenum(uint64_t num, char *buf)
 211 {
 212         if (dump_opt['P'])
 213                 (void) sprintf(buf, "%llu", (longlong_t)num);
 214         else
 215                 nicenum(num, buf);
 216 }
 217
 218 const char dump_zap_stars[] = "****************************************";
 219 const int dump_zap_width = sizeof (dump_zap_stars) - 1;
 220
 221 static void
 222 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
 223 {
 224         int i;
 225         int minidx = ZAP_HISTOGRAM_SIZE - 1;
 226         int maxidx = 0;
 227         uint64_t max = 0;
 228
 229         for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
 230                 if (histo[i] > max)
 231                         max = histo[i];
 232                 if (histo[i] > 0 && i > maxidx)
 233                         maxidx = i;
 234                 if (histo[i] > 0 && i < minidx)
 235                         minidx = i;
 236         }
 237
 238         if (max < dump_zap_width)
 239                 max = dump_zap_width;
 240
 241         for (i = minidx; i <= maxidx; i++)
 242                 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
 243                     &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
 244 }
 245
 246 static void
 247 dump_zap_stats(objset_t *os, uint64_t object)
 248 {
 249         int error;
 250         zap_stats_t zs;
 251
 252         error = zap_get_stats(os, object, &zs);
 253         if (error)
 254                 return;
 255
 256         if (zs.zs_ptrtbl_len == 0) {
 257                 ASSERT(zs.zs_num_blocks == 1);
 258                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 259                     (u_longlong_t)zs.zs_blocksize,
 260                     (u_longlong_t)zs.zs_num_entries);
 261                 return;
 262         }
 263
 264         (void) printf("\tFat ZAP stats:\n");
 265
 266         (void) printf("\t\tPointer table:\n");
 267         (void) printf("\t\t\t%llu elements\n",
 268             (u_longlong_t)zs.zs_ptrtbl_len);
 269         (void) printf("\t\t\tzt_blk: %llu\n",
 270             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 271         (void) printf("\t\t\tzt_numblks: %llu\n",
 272             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 273         (void) printf("\t\t\tzt_shift: %llu\n",
 274             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 275         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 276             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 277         (void) printf("\t\t\tzt_nextblk: %llu\n",
 278             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 279
 280         (void) printf("\t\tZAP entries: %llu\n",
 281             (u_longlong_t)zs.zs_num_entries);
 282         (void) printf("\t\tLeaf blocks: %llu\n",
 283             (u_longlong_t)zs.zs_num_leafs);
 284         (void) printf("\t\tTotal blocks: %llu\n",
 285             (u_longlong_t)zs.zs_num_blocks);
 286         (void) printf("\t\tzap_block_type: 0x%llx\n",
 287             (u_longlong_t)zs.zs_block_type);
 288         (void) printf("\t\tzap_magic: 0x%llx\n",
 289             (u_longlong_t)zs.zs_magic);
 290         (void) printf("\t\tzap_salt: 0x%llx\n",
 291             (u_longlong_t)zs.zs_salt);
 292
 293         (void) printf("\t\tLeafs with 2^n pointers:\n");
 294         dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
 295
 296         (void) printf("\t\tBlocks with n*5 entries:\n");
 297         dump_zap_histogram(zs.zs_blocks_with_n5_entries);
 298
 299         (void) printf("\t\tBlocks n/10 full:\n");
 300         dump_zap_histogram(zs.zs_blocks_n_tenths_full);
 301
 302         (void) printf("\t\tEntries with n chunks:\n");
 303         dump_zap_histogram(zs.zs_entries_using_n_chunks);
 304
 305         (void) printf("\t\tBuckets with n entries:\n");
 306         dump_zap_histogram(zs.zs_buckets_with_n_entries);
 307 }
 308
 309 /*ARGSUSED*/
 310 static void
 311 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 312 {
 313 }
 314
 315 /*ARGSUSED*/
 316 static void
 317 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 318 {
 319         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 320 }
 321
 322 /*ARGSUSED*/
 323 void
 324 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 325 {
 326 }
 327
 328 /*ARGSUSED*/
 329 static void
 330 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 331 {
 332 }
 333
 334 /*ARGSUSED*/
 335 static void
 336 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 337 {
 338         zap_cursor_t zc;
 339         zap_attribute_t attr;
 340         void *prop;
 341         int i;
 342
 343         dump_zap_stats(os, object);
 344         (void) printf("\n");
 345
 346         for (zap_cursor_init(&zc, os, object);
 347             zap_cursor_retrieve(&zc, &attr) == 0;
 348             zap_cursor_advance(&zc)) {
 349                 (void) printf("\t\t%s = ", attr.za_name);
 350                 if (attr.za_num_integers == 0) {
 351                         (void) printf("\n");
 352                         continue;
 353                 }
 354                 prop = umem_zalloc(attr.za_num_integers *
 355                     attr.za_integer_length, UMEM_NOFAIL);
 356                 (void) zap_lookup(os, object, attr.za_name,
 357                     attr.za_integer_length, attr.za_num_integers, prop);
 358                 if (attr.za_integer_length == 1) {
 359                         (void) printf("%s", (char *)prop);
 360                 } else {
 361                         for (i = 0; i < attr.za_num_integers; i++) {
 362                                 switch (attr.za_integer_length) {
 363                                 case 2:
 364                                         (void) printf("%u ",
 365                                             ((uint16_t *)prop)[i]);
 366                                         break;
 367                                 case 4:
 368                                         (void) printf("%u ",
 369                                             ((uint32_t *)prop)[i]);
 370                                         break;
 371                                 case 8:
 372                                         (void) printf("%lld ",
 373                                             (u_longlong_t)((int64_t *)prop)[i]);
 374                                         break;
 375                                 }
 376                         }
 377                 }
 378                 (void) printf("\n");
 379                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 380         }
 381         zap_cursor_fini(&zc);
 382 }
 383
 384 /*ARGSUSED*/
 385 static void
 386 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 387 {
 388         dump_zap_stats(os, object);
 389         /* contents are printed elsewhere, properly decoded */
 390 }
 391
 392 /*ARGSUSED*/
 393 static void
 394 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 395 {
 396         zap_cursor_t zc;
 397         zap_attribute_t attr;
 398
 399         dump_zap_stats(os, object);
 400         (void) printf("\n");
 401
 402         for (zap_cursor_init(&zc, os, object);
 403             zap_cursor_retrieve(&zc, &attr) == 0;
 404             zap_cursor_advance(&zc)) {
 405                 (void) printf("\t\t%s = ", attr.za_name);
 406                 if (attr.za_num_integers == 0) {
 407                         (void) printf("\n");
 408                         continue;
 409                 }
 410                 (void) printf(" %llx : [%d:%d:%d]\n",
 411                     (u_longlong_t)attr.za_first_integer,
 412                     (int)ATTR_LENGTH(attr.za_first_integer),
 413                     (int)ATTR_BSWAP(attr.za_first_integer),
 414                     (int)ATTR_NUM(attr.za_first_integer));
 415         }
 416         zap_cursor_fini(&zc);
 417 }
 418
 419 /*ARGSUSED*/
 420 static void
 421 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 422 {
 423         zap_cursor_t zc;
 424         zap_attribute_t attr;
 425         uint16_t *layout_attrs;
 426         int i;
 427
 428         dump_zap_stats(os, object);
 429         (void) printf("\n");
 430
 431         for (zap_cursor_init(&zc, os, object);
 432             zap_cursor_retrieve(&zc, &attr) == 0;
 433             zap_cursor_advance(&zc)) {
 434                 (void) printf("\t\t%s = [", attr.za_name);
 435                 if (attr.za_num_integers == 0) {
 436                         (void) printf("\n");
 437                         continue;
 438                 }
 439
 440                 VERIFY(attr.za_integer_length == 2);
 441                 layout_attrs = umem_zalloc(attr.za_num_integers *
 442                     attr.za_integer_length, UMEM_NOFAIL);
 443
 444                 VERIFY(zap_lookup(os, object, attr.za_name,
 445                     attr.za_integer_length,
 446                     attr.za_num_integers, layout_attrs) == 0);
 447
 448                 for (i = 0; i != attr.za_num_integers; i++)
 449                         (void) printf(" %d ", (int)layout_attrs[i]);
 450                 (void) printf("]\n");
 451                 umem_free(layout_attrs,
 452                     attr.za_num_integers * attr.za_integer_length);
 453         }
 454         zap_cursor_fini(&zc);
 455 }
 456
 457 /*ARGSUSED*/
 458 static void
 459 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 460 {
 461         zap_cursor_t zc;
 462         zap_attribute_t attr;
 463         const char *typenames[] = {
 464                 /* 0 */ "not specified",
 465                 /* 1 */ "FIFO",
 466                 /* 2 */ "Character Device",
 467                 /* 3 */ "3 (invalid)",
 468                 /* 4 */ "Directory",
 469                 /* 5 */ "5 (invalid)",
 470                 /* 6 */ "Block Device",
 471                 /* 7 */ "7 (invalid)",
 472                 /* 8 */ "Regular File",
 473                 /* 9 */ "9 (invalid)",
 474                 /* 10 */ "Symbolic Link",
 475                 /* 11 */ "11 (invalid)",
 476                 /* 12 */ "Socket",
 477                 /* 13 */ "Door",
 478                 /* 14 */ "Event Port",
 479                 /* 15 */ "15 (invalid)",
 480         };
 481
 482         dump_zap_stats(os, object);
 483         (void) printf("\n");
 484
 485         for (zap_cursor_init(&zc, os, object);
 486             zap_cursor_retrieve(&zc, &attr) == 0;
 487             zap_cursor_advance(&zc)) {
 488                 (void) printf("\t\t%s = %lld (type: %s)\n",
 489                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 490                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 491         }
 492         zap_cursor_fini(&zc);
 493 }
 494
 495 static void
 496 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 497 {
 498         uint64_t alloc, offset, entry;
 499         uint8_t mapshift = sm->sm_shift;
 500         uint64_t mapstart = sm->sm_start;
 501         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 502                             "INVALID", "INVALID", "INVALID", "INVALID" };
 503
 504         if (smo->smo_object == 0)
 505                 return;
 506
 507         /*
 508          * Print out the freelist entries in both encoded and decoded form.
 509          */
 510         alloc = 0;
 511         for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 512                 VERIFY3U(0, ==, dmu_read(os, smo->smo_object, offset,
 513                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 514                 if (SM_DEBUG_DECODE(entry)) {
 515                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 516                             (u_longlong_t)(offset / sizeof (entry)),
 517                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 518                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 519                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 520                 } else {
 521                         (void) printf("\t    [%6llu]    %c  range:"
 522                             " %010llx-%010llx  size: %06llx\n",
 523                             (u_longlong_t)(offset / sizeof (entry)),
 524                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 525                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 526                             mapshift) + mapstart),
 527                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 528                             mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
 529                             mapshift)),
 530                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 531                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 532                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 533                         else
 534                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 535                 }
 536         }
 537         if (alloc != smo->smo_alloc) {
 538                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 539                     "with space map summary (%llu)\n",
 540                     (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
 541         }
 542 }
 543
 544 static void
 545 dump_metaslab_stats(metaslab_t *msp)
 546 {
 547         char maxbuf[32];
 548         space_map_t *sm = &msp->ms_map;
 549         avl_tree_t *t = sm->sm_pp_root;
 550         int free_pct = sm->sm_space * 100 / sm->sm_size;
 551
 552         zdb_nicenum(space_map_maxsize(sm), maxbuf);
 553
 554         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 555             "segments", avl_numnodes(t), "maxsize", maxbuf,
 556             "freepct", free_pct);
 557 }
 558
 559 static void
 560 dump_metaslab(metaslab_t *msp)
 561 {
 562         vdev_t *vd = msp->ms_group->mg_vd;
 563         spa_t *spa = vd->vdev_spa;
 564         space_map_t *sm = &msp->ms_map;
 565         space_map_obj_t *smo = &msp->ms_smo;
 566         char freebuf[32];
 567
 568         zdb_nicenum(sm->sm_size - smo->smo_alloc, freebuf);
 569
 570         (void) printf(
 571             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 572             (u_longlong_t)(sm->sm_start / sm->sm_size),
 573             (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
 574
 575         if (dump_opt['m'] > 1 && !dump_opt['L']) {
 576                 mutex_enter(&msp->ms_lock);
 577                 space_map_load_wait(sm);
 578                 if (!sm->sm_loaded)
 579                         VERIFY(space_map_load(sm, zfs_metaslab_ops,
 580                             SM_FREE, smo, spa->spa_meta_objset) == 0);
 581                 dump_metaslab_stats(msp);
 582                 space_map_unload(sm);
 583                 mutex_exit(&msp->ms_lock);
 584         }
 585
 586         if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
 587                 ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
 588
 589                 mutex_enter(&msp->ms_lock);
 590                 dump_spacemap(spa->spa_meta_objset, smo, sm);
 591                 mutex_exit(&msp->ms_lock);
 592         }
 593 }
 594
 595 static void
 596 print_vdev_metaslab_header(vdev_t *vd)
 597 {
 598         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 599             (u_longlong_t)vd->vdev_id,
 600             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 601             "offset", "spacemap", "free");
 602         (void) printf("\t%15s   %19s   %15s   %10s\n",
 603             "---------------", "-------------------",
 604             "---------------", "-------------");
 605 }
 606
 607 static void
 608 dump_metaslabs(spa_t *spa)
 609 {
 610         vdev_t *vd, *rvd = spa->spa_root_vdev;
 611         uint64_t m, c = 0, children = rvd->vdev_children;
 612
 613         (void) printf("\nMetaslabs:\n");
 614
 615         if (!dump_opt['d'] && zopt_objects > 0) {
 616                 c = zopt_object[0];
 617
 618                 if (c >= children)
 619                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 620
 621                 if (zopt_objects > 1) {
 622                         vd = rvd->vdev_child[c];
 623                         print_vdev_metaslab_header(vd);
 624
 625                         for (m = 1; m < zopt_objects; m++) {
 626                                 if (zopt_object[m] < vd->vdev_ms_count)
 627                                         dump_metaslab(
 628                                             vd->vdev_ms[zopt_object[m]]);
 629                                 else
 630                                         (void) fprintf(stderr, "bad metaslab "
 631                                             "number %llu\n",
 632                                             (u_longlong_t)zopt_object[m]);
 633                         }
 634                         (void) printf("\n");
 635                         return;
 636                 }
 637                 children = c + 1;
 638         }
 639         for (; c < children; c++) {
 640                 vd = rvd->vdev_child[c];
 641                 print_vdev_metaslab_header(vd);
 642
 643                 for (m = 0; m < vd->vdev_ms_count; m++)
 644                         dump_metaslab(vd->vdev_ms[m]);
 645                 (void) printf("\n");
 646         }
 647 }
 648
 649 static void
 650 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 651 {
 652         const ddt_phys_t *ddp = dde->dde_phys;
 653         const ddt_key_t *ddk = &dde->dde_key;
 654         char *types[4] = { "ditto", "single", "double", "triple" };
 655         char blkbuf[BP_SPRINTF_LEN];
 656         blkptr_t blk;
 657
 658         for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 659                 if (ddp->ddp_phys_birth == 0)
 660                         continue;
 661                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 662                 sprintf_blkptr(blkbuf, &blk);
 663                 (void) printf("index %llx refcnt %llu %s %s\n",
 664                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 665                     types[p], blkbuf);
 666         }
 667 }
 668
 669 static void
 670 dump_dedup_ratio(const ddt_stat_t *dds)
 671 {
 672         double rL, rP, rD, D, dedup, compress, copies;
 673
 674         if (dds->dds_blocks == 0)
 675                 return;
 676
 677         rL = (double)dds->dds_ref_lsize;
 678         rP = (double)dds->dds_ref_psize;
 679         rD = (double)dds->dds_ref_dsize;
 680         D = (double)dds->dds_dsize;
 681
 682         dedup = rD / D;
 683         compress = rL / rP;
 684         copies = rD / rP;
 685
 686         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 687             "dedup * compress / copies = %.2f\n\n",
 688             dedup, compress, copies, dedup * compress / copies);
 689 }
 690
 691 static void
 692 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 693 {
 694         char name[DDT_NAMELEN];
 695         ddt_entry_t dde;
 696         uint64_t walk = 0;
 697         dmu_object_info_t doi;
 698         uint64_t count, dspace, mspace;
 699         int error;
 700
 701         error = ddt_object_info(ddt, type, class, &doi);
 702
 703         if (error == ENOENT)
 704                 return;
 705         ASSERT(error == 0);
 706
 707         error = ddt_object_count(ddt, type, class, &count);
 708         ASSERT(error == 0);
 709         if (count == 0)
 710                 return;
 711
 712         dspace = doi.doi_physical_blocks_512 << 9;
 713         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 714
 715         ddt_object_name(ddt, type, class, name);
 716
 717         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 718             name,
 719             (u_longlong_t)count,
 720             (u_longlong_t)(dspace / count),
 721             (u_longlong_t)(mspace / count));
 722
 723         if (dump_opt['D'] < 3)
 724                 return;
 725
 726         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 727
 728         if (dump_opt['D'] < 4)
 729                 return;
 730
 731         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 732                 return;
 733
 734         (void) printf("%s contents:\n\n", name);
 735
 736         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 737                 dump_dde(ddt, &dde, walk);
 738
 739         ASSERT(error == ENOENT);
 740
 741         (void) printf("\n");
 742 }
 743
 744 static void
 745 dump_all_ddts(spa_t *spa)
 746 {
 747         ddt_histogram_t ddh_total = { 0 };
 748         ddt_stat_t dds_total = { 0 };
 749
 750         for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 751                 ddt_t *ddt = spa->spa_ddt[c];
 752                 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
 753                         for (enum ddt_class class = 0; class < DDT_CLASSES;
 754                             class++) {
 755                                 dump_ddt(ddt, type, class);
 756                         }
 757                 }
 758         }
 759
 760         ddt_get_dedup_stats(spa, &dds_total);
 761
 762         if (dds_total.dds_blocks == 0) {
 763                 (void) printf("All DDTs are empty\n");
 764                 return;
 765         }
 766
 767         (void) printf("\n");
 768
 769         if (dump_opt['D'] > 1) {
 770                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
 771                 ddt_get_dedup_histogram(spa, &ddh_total);
 772                 zpool_dump_ddt(&dds_total, &ddh_total);
 773         }
 774
 775         dump_dedup_ratio(&dds_total);
 776 }
 777
 778 static void
 779 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 780 {
 781         char *prefix = (void *)sm;
 782
 783         (void) printf("%s [%llu,%llu) length %llu\n",
 784             prefix,
 785             (u_longlong_t)start,
 786             (u_longlong_t)(start + size),
 787             (u_longlong_t)(size));
 788 }
 789
 790 static void
 791 dump_dtl(vdev_t *vd, int indent)
 792 {
 793         spa_t *spa = vd->vdev_spa;
 794         boolean_t required;
 795         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 796         char prefix[256];
 797
 798         spa_vdev_state_enter(spa, SCL_NONE);
 799         required = vdev_dtl_required(vd);
 800         (void) spa_vdev_state_exit(spa, NULL, 0);
 801
 802         if (indent == 0)
 803                 (void) printf("\nDirty time logs:\n\n");
 804
 805         (void) printf("\t%*s%s [%s]\n", indent, "",
 806             vd->vdev_path ? vd->vdev_path :
 807             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 808             required ? "DTL-required" : "DTL-expendable");
 809
 810         for (int t = 0; t < DTL_TYPES; t++) {
 811                 space_map_t *sm = &vd->vdev_dtl[t];
 812                 if (sm->sm_space == 0)
 813                         continue;
 814                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 815                     indent + 2, "", name[t]);
 816                 mutex_enter(sm->sm_lock);
 817                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 818                 mutex_exit(sm->sm_lock);
 819                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 820                         dump_spacemap(spa->spa_meta_objset,
 821                             &vd->vdev_dtl_smo, sm);
 822         }
 823
 824         for (int c = 0; c < vd->vdev_children; c++)
 825                 dump_dtl(vd->vdev_child[c], indent + 4);
 826 }
 827
 828 static void
 829 dump_history(spa_t *spa)
 830 {
 831         nvlist_t **events = NULL;
 832         char buf[SPA_MAXBLOCKSIZE];
 833         uint64_t resid, len, off = 0;
 834         uint_t num = 0;
 835         int error;
 836         time_t tsec;
 837         struct tm t;
 838         char tbuf[30];
 839         char internalstr[MAXPATHLEN];
 840
 841         do {
 842                 len = sizeof (buf);
 843
 844                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
 845                         (void) fprintf(stderr, "Unable to read history: "
 846                             "error %d\n", error);
 847                         return;
 848                 }
 849
 850                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
 851                         break;
 852
 853                 off -= resid;
 854         } while (len != 0);
 855
 856         (void) printf("\nHistory:\n");
 857         for (int i = 0; i < num; i++) {
 858                 uint64_t time, txg, ievent;
 859                 char *cmd, *intstr;
 860
 861                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 862                     &time) != 0)
 863                         continue;
 864                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 865                     &cmd) != 0) {
 866                         if (nvlist_lookup_uint64(events[i],
 867                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
 868                                 continue;
 869                         verify(nvlist_lookup_uint64(events[i],
 870                             ZPOOL_HIST_TXG, &txg) == 0);
 871                         verify(nvlist_lookup_string(events[i],
 872                             ZPOOL_HIST_INT_STR, &intstr) == 0);
 873                         if (ievent >= LOG_END)
 874                                 continue;
 875
 876                         (void) snprintf(internalstr,
 877                             sizeof (internalstr),
 878                             "[internal %s txg:%lld] %s",
 879                             zfs_history_event_names[ievent], txg,
 880                             intstr);
 881                         cmd = internalstr;
 882                 }
 883                 tsec = time;
 884                 (void) localtime_r(&tsec, &t);
 885                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
 886                 (void) printf("%s %s\n", tbuf, cmd);
 887         }
 888 }
 889
 890 /*ARGSUSED*/
 891 static void
 892 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 893 {
 894 }
 895
 896 static uint64_t
 897 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
 898 {
 899         if (dnp == NULL) {
 900                 ASSERT(zb->zb_level < 0);
 901                 if (zb->zb_object == 0)
 902                         return (zb->zb_blkid);
 903                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
 904         }
 905
 906         ASSERT(zb->zb_level >= 0);
 907
 908         return ((zb->zb_blkid <<
 909             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 910             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 911 }
 912
 913 static void
 914 sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
 915 {
 916         const dva_t *dva = bp->blk_dva;
 917         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
 918
 919         if (dump_opt['b'] >= 5) {
 920                 sprintf_blkptr(blkbuf, bp);
 921                 return;
 922         }
 923
 924         blkbuf[0] = '\0';
 925
 926         for (int i = 0; i < ndvas; i++)
 927                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 928                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 929                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 930                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 931
 932         (void) sprintf(blkbuf + strlen(blkbuf),
 933             "%llxL/%llxP F=%llu B=%llu/%llu",
 934             (u_longlong_t)BP_GET_LSIZE(bp),
 935             (u_longlong_t)BP_GET_PSIZE(bp),
 936             (u_longlong_t)bp->blk_fill,
 937             (u_longlong_t)bp->blk_birth,
 938             (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
 939 }
 940
 941 static void
 942 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 943     const dnode_phys_t *dnp)
 944 {
 945         char blkbuf[BP_SPRINTF_LEN];
 946         int l;
 947
 948         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 949         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 950
 951         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
 952
 953         ASSERT(zb->zb_level >= 0);
 954
 955         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 956                 if (l == zb->zb_level) {
 957                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 958                 } else {
 959                         (void) printf(" ");
 960                 }
 961         }
 962
 963         sprintf_blkptr_compact(blkbuf, bp);
 964         (void) printf("%s\n", blkbuf);
 965 }
 966
 967 static int
 968 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 969     blkptr_t *bp, const zbookmark_t *zb)
 970 {
 971         int err = 0;
 972
 973         if (bp->blk_birth == 0)
 974                 return (0);
 975
 976         print_indirect(bp, zb, dnp);
 977
 978         if (BP_GET_LEVEL(bp) > 0) {
 979                 uint32_t flags = ARC_WAIT;
 980                 int i;
 981                 blkptr_t *cbp;
 982                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
 983                 arc_buf_t *buf;
 984                 uint64_t fill = 0;
 985
 986                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
 987                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
 988                 if (err)
 989                         return (err);
 990                 ASSERT(buf->b_data);
 991
 992                 /* recursively visit blocks below this */
 993                 cbp = buf->b_data;
 994                 for (i = 0; i < epb; i++, cbp++) {
 995                         zbookmark_t czb;
 996
 997                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
 998                             zb->zb_level - 1,
 999                             zb->zb_blkid * epb + i);
1000                         err = visit_indirect(spa, dnp, cbp, &czb);
1001                         if (err)
1002                                 break;
1003                         fill += cbp->blk_fill;
1004                 }
1005                 if (!err)
1006                         ASSERT3U(fill, ==, bp->blk_fill);
1007                 (void) arc_buf_remove_ref(buf, &buf);
1008         }
1009
1010         return (err);
1011 }
1012
1013 /*ARGSUSED*/
1014 static void
1015 dump_indirect(dnode_t *dn)
1016 {
1017         dnode_phys_t *dnp = dn->dn_phys;
1018         int j;
1019         zbookmark_t czb;
1020
1021         (void) printf("Indirect blocks:\n");
1022
1023         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1024             dn->dn_object, dnp->dn_nlevels - 1, 0);
1025         for (j = 0; j < dnp->dn_nblkptr; j++) {
1026                 czb.zb_blkid = j;
1027                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1028                     &dnp->dn_blkptr[j], &czb);
1029         }
1030
1031         (void) printf("\n");
1032 }
1033
1034 /*ARGSUSED*/
1035 static void
1036 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1037 {
1038         dsl_dir_phys_t *dd = data;
1039         time_t crtime;
1040         char nice[32];
1041
1042         if (dd == NULL)
1043                 return;
1044
1045         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1046
1047         crtime = dd->dd_creation_time;
1048         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1049         (void) printf("\t\thead_dataset_obj = %llu\n",
1050             (u_longlong_t)dd->dd_head_dataset_obj);
1051         (void) printf("\t\tparent_dir_obj = %llu\n",
1052             (u_longlong_t)dd->dd_parent_obj);
1053         (void) printf("\t\torigin_obj = %llu\n",
1054             (u_longlong_t)dd->dd_origin_obj);
1055         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1056             (u_longlong_t)dd->dd_child_dir_zapobj);
1057         zdb_nicenum(dd->dd_used_bytes, nice);
1058         (void) printf("\t\tused_bytes = %s\n", nice);
1059         zdb_nicenum(dd->dd_compressed_bytes, nice);
1060         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1061         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1062         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1063         zdb_nicenum(dd->dd_quota, nice);
1064         (void) printf("\t\tquota = %s\n", nice);
1065         zdb_nicenum(dd->dd_reserved, nice);
1066         (void) printf("\t\treserved = %s\n", nice);
1067         (void) printf("\t\tprops_zapobj = %llu\n",
1068             (u_longlong_t)dd->dd_props_zapobj);
1069         (void) printf("\t\tdeleg_zapobj = %llu\n",
1070             (u_longlong_t)dd->dd_deleg_zapobj);
1071         (void) printf("\t\tflags = %llx\n",
1072             (u_longlong_t)dd->dd_flags);
1073
1074 #define DO(which) \
1075         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1076         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1077         DO(HEAD);
1078         DO(SNAP);
1079         DO(CHILD);
1080         DO(CHILD_RSRV);
1081         DO(REFRSRV);
1082 #undef DO
1083 }
1084
1085 /*ARGSUSED*/
1086 static void
1087 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1088 {
1089         dsl_dataset_phys_t *ds = data;
1090         time_t crtime;
1091         char used[32], compressed[32], uncompressed[32], unique[32];
1092         char blkbuf[BP_SPRINTF_LEN];
1093
1094         if (ds == NULL)
1095                 return;
1096
1097         ASSERT(size == sizeof (*ds));
1098         crtime = ds->ds_creation_time;
1099         zdb_nicenum(ds->ds_referenced_bytes, used);
1100         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1101         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1102         zdb_nicenum(ds->ds_unique_bytes, unique);
1103         sprintf_blkptr(blkbuf, &ds->ds_bp);
1104
1105         (void) printf("\t\tdir_obj = %llu\n",
1106             (u_longlong_t)ds->ds_dir_obj);
1107         (void) printf("\t\tprev_snap_obj = %llu\n",
1108             (u_longlong_t)ds->ds_prev_snap_obj);
1109         (void) printf("\t\tprev_snap_txg = %llu\n",
1110             (u_longlong_t)ds->ds_prev_snap_txg);
1111         (void) printf("\t\tnext_snap_obj = %llu\n",
1112             (u_longlong_t)ds->ds_next_snap_obj);
1113         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1114             (u_longlong_t)ds->ds_snapnames_zapobj);
1115         (void) printf("\t\tnum_children = %llu\n",
1116             (u_longlong_t)ds->ds_num_children);
1117         (void) printf("\t\tuserrefs_obj = %llu\n",
1118             (u_longlong_t)ds->ds_userrefs_obj);
1119         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1120         (void) printf("\t\tcreation_txg = %llu\n",
1121             (u_longlong_t)ds->ds_creation_txg);
1122         (void) printf("\t\tdeadlist_obj = %llu\n",
1123             (u_longlong_t)ds->ds_deadlist_obj);
1124         (void) printf("\t\tused_bytes = %s\n", used);
1125         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1126         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1127         (void) printf("\t\tunique = %s\n", unique);
1128         (void) printf("\t\tfsid_guid = %llu\n",
1129             (u_longlong_t)ds->ds_fsid_guid);
1130         (void) printf("\t\tguid = %llu\n",
1131             (u_longlong_t)ds->ds_guid);
1132         (void) printf("\t\tflags = %llx\n",
1133             (u_longlong_t)ds->ds_flags);
1134         (void) printf("\t\tnext_clones_obj = %llu\n",
1135             (u_longlong_t)ds->ds_next_clones_obj);
1136         (void) printf("\t\tprops_obj = %llu\n",
1137             (u_longlong_t)ds->ds_props_obj);
1138         (void) printf("\t\tbp = %s\n", blkbuf);
1139 }
1140
1141 /* ARGSUSED */
1142 static int
1143 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1144 {
1145         char blkbuf[BP_SPRINTF_LEN];
1146
1147         if (bp->blk_birth != 0) {
1148                 sprintf_blkptr(blkbuf, bp);
1149                 (void) printf("\t%s\n", blkbuf);
1150         }
1151         return (0);
1152 }
1153
1154 static void
1155 dump_bptree(objset_t *os, uint64_t obj, char *name)
1156 {
1157         char bytes[32];
1158         bptree_phys_t *bt;
1159         dmu_buf_t *db;
1160
1161         if (dump_opt['d'] < 3)
1162                 return;
1163
1164         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1165         bt = db->db_data;
1166         zdb_nicenum(bt->bt_bytes, bytes);
1167         (void) printf("\n    %s: %llu datasets, %s\n",
1168             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1169         dmu_buf_rele(db, FTAG);
1170
1171         if (dump_opt['d'] < 5)
1172                 return;
1173
1174         (void) printf("\n");
1175
1176         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1177 }
1178
1179 /* ARGSUSED */
1180 static int
1181 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1182 {
1183         char blkbuf[BP_SPRINTF_LEN];
1184
1185         ASSERT(bp->blk_birth != 0);
1186         sprintf_blkptr_compact(blkbuf, bp);
1187         (void) printf("\t%s\n", blkbuf);
1188         return (0);
1189 }
1190
1191 static void
1192 dump_bpobj(bpobj_t *bpo, char *name, int indent)
1193 {
1194         char bytes[32];
1195         char comp[32];
1196         char uncomp[32];
1197
1198         if (dump_opt['d'] < 3)
1199                 return;
1200
1201         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1202         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1203                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1204                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1205                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1206                     "%llu subobjs, %s (%s/%s comp)\n",
1207                     indent * 8, name,
1208                     (u_longlong_t)bpo->bpo_object,
1209                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1210                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1211                     bytes, comp, uncomp);
1212
1213                 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1214                         uint64_t subobj;
1215                         bpobj_t subbpo;
1216                         int error;
1217                         VERIFY0(dmu_read(bpo->bpo_os,
1218                             bpo->bpo_phys->bpo_subobjs,
1219                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1220                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1221                         if (error != 0) {
1222                                 (void) printf("ERROR %u while trying to open "
1223                                     "subobj id %llu\n",
1224                                     error, (u_longlong_t)subobj);
1225                                 continue;
1226                         }
1227                         dump_bpobj(&subbpo, "subobj", indent + 1);
1228                         bpobj_close(&subbpo);
1229                 }
1230         } else {
1231                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1232                     indent * 8, name,
1233                     (u_longlong_t)bpo->bpo_object,
1234                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1235                     bytes);
1236         }
1237
1238         if (dump_opt['d'] < 5)
1239                 return;
1240
1241
1242         if (indent == 0) {
1243                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1244                 (void) printf("\n");
1245         }
1246 }
1247
1248 static void
1249 dump_deadlist(dsl_deadlist_t *dl)
1250 {
1251         dsl_deadlist_entry_t *dle;
1252         uint64_t unused;
1253         char bytes[32];
1254         char comp[32];
1255         char uncomp[32];
1256
1257         if (dump_opt['d'] < 3)
1258                 return;
1259
1260         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1261         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1262         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1263         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1264             bytes, comp, uncomp);
1265
1266         if (dump_opt['d'] < 4)
1267                 return;
1268
1269         (void) printf("\n");
1270
1271         /* force the tree to be loaded */
1272         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1273
1274         for (dle = avl_first(&dl->dl_tree); dle;
1275             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1276                 if (dump_opt['d'] >= 5) {
1277                         char buf[128];
1278                         (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1279                             (longlong_t)dle->dle_mintxg,
1280                             (longlong_t)dle->dle_bpobj.bpo_object);
1281
1282                         dump_bpobj(&dle->dle_bpobj, buf, 0);
1283                 } else {
1284                         (void) printf("mintxg %llu -> obj %llu\n",
1285                             (longlong_t)dle->dle_mintxg,
1286                             (longlong_t)dle->dle_bpobj.bpo_object);
1287
1288                 }
1289         }
1290 }
1291
1292 static avl_tree_t idx_tree;
1293 static avl_tree_t domain_tree;
1294 static boolean_t fuid_table_loaded;
1295 static boolean_t sa_loaded;
1296 sa_attr_type_t *sa_attr_table;
1297
1298 static void
1299 fuid_table_destroy()
1300 {
1301         if (fuid_table_loaded) {
1302                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1303                 fuid_table_loaded = B_FALSE;
1304         }
1305 }
1306
1307 /*
1308  * print uid or gid information.
1309  * For normal POSIX id just the id is printed in decimal format.
1310  * For CIFS files with FUID the fuid is printed in hex followed by
1311  * the domain-rid string.
1312  */
1313 static void
1314 print_idstr(uint64_t id, const char *id_type)
1315 {
1316         if (FUID_INDEX(id)) {
1317                 char *domain;
1318
1319                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1320                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1321                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1322         } else {
1323                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1324         }
1325
1326 }
1327
1328 static void
1329 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1330 {
1331         uint32_t uid_idx, gid_idx;
1332
1333         uid_idx = FUID_INDEX(uid);
1334         gid_idx = FUID_INDEX(gid);
1335
1336         /* Load domain table, if not already loaded */
1337         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1338                 uint64_t fuid_obj;
1339
1340                 /* first find the fuid object.  It lives in the master node */
1341                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1342                     8, 1, &fuid_obj) == 0);
1343                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1344                 (void) zfs_fuid_table_load(os, fuid_obj,
1345                     &idx_tree, &domain_tree);
1346                 fuid_table_loaded = B_TRUE;
1347         }
1348
1349         print_idstr(uid, "uid");
1350         print_idstr(gid, "gid");
1351 }
1352
1353 /*ARGSUSED*/
1354 static void
1355 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1356 {
1357         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1358         sa_handle_t *hdl;
1359         uint64_t xattr, rdev, gen;
1360         uint64_t uid, gid, mode, fsize, parent, links;
1361         uint64_t pflags;
1362         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1363         time_t z_crtime, z_atime, z_mtime, z_ctime;
1364         sa_bulk_attr_t bulk[12];
1365         int idx = 0;
1366         int error;
1367
1368         if (!sa_loaded) {
1369                 uint64_t sa_attrs = 0;
1370                 uint64_t version;
1371
1372                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1373                     8, 1, &version) == 0);
1374                 if (version >= ZPL_VERSION_SA) {
1375                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1376                             8, 1, &sa_attrs) == 0);
1377                 }
1378                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1379                     ZPL_END, &sa_attr_table)) != 0) {
1380                         (void) printf("sa_setup failed errno %d, can't "
1381                             "display znode contents\n", error);
1382                         return;
1383                 }
1384                 sa_loaded = B_TRUE;
1385         }
1386
1387         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1388                 (void) printf("Failed to get handle for SA znode\n");
1389                 return;
1390         }
1391
1392         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1393         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1394         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1395             &links, 8);
1396         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1397         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1398             &mode, 8);
1399         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1400             NULL, &parent, 8);
1401         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1402             &fsize, 8);
1403         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1404             acctm, 16);
1405         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1406             modtm, 16);
1407         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1408             crtm, 16);
1409         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1410             chgtm, 16);
1411         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1412             &pflags, 8);
1413
1414         if (sa_bulk_lookup(hdl, bulk, idx)) {
1415                 (void) sa_handle_destroy(hdl);
1416                 return;
1417         }
1418
1419         error = zfs_obj_to_path(os, object, path, sizeof (path));
1420         if (error != 0) {
1421                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1422                     (u_longlong_t)object);
1423         }
1424         if (dump_opt['d'] < 3) {
1425                 (void) printf("\t%s\n", path);
1426                 (void) sa_handle_destroy(hdl);
1427                 return;
1428         }
1429
1430         z_crtime = (time_t)crtm[0];
1431         z_atime = (time_t)acctm[0];
1432         z_mtime = (time_t)modtm[0];
1433         z_ctime = (time_t)chgtm[0];
1434
1435         (void) printf("\tpath   %s\n", path);
1436         dump_uidgid(os, uid, gid);
1437         (void) printf("\tatime  %s", ctime(&z_atime));
1438         (void) printf("\tmtime  %s", ctime(&z_mtime));
1439         (void) printf("\tctime  %s", ctime(&z_ctime));
1440         (void) printf("\tcrtime %s", ctime(&z_crtime));
1441         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1442         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1443         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1444         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1445         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1446         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1447         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1448             sizeof (uint64_t)) == 0)
1449                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1450         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1451             sizeof (uint64_t)) == 0)
1452                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1453         sa_handle_destroy(hdl);
1454 }
1455
1456 /*ARGSUSED*/
1457 static void
1458 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1459 {
1460 }
1461
1462 /*ARGSUSED*/
1463 static void
1464 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1465 {
1466 }
1467
1468 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1469         dump_none,              /* unallocated                  */
1470         dump_zap,               /* object directory             */
1471         dump_uint64,            /* object array                 */
1472         dump_none,              /* packed nvlist                */
1473         dump_packed_nvlist,     /* packed nvlist size           */
1474         dump_none,              /* bplist                       */
1475         dump_none,              /* bplist header                */
1476         dump_none,              /* SPA space map header         */
1477         dump_none,              /* SPA space map                */
1478         dump_none,              /* ZIL intent log               */
1479         dump_dnode,             /* DMU dnode                    */
1480         dump_dmu_objset,        /* DMU objset                   */
1481         dump_dsl_dir,           /* DSL directory                */
1482         dump_zap,               /* DSL directory child map      */
1483         dump_zap,               /* DSL dataset snap map         */
1484         dump_zap,               /* DSL props                    */
1485         dump_dsl_dataset,       /* DSL dataset                  */
1486         dump_znode,             /* ZFS znode                    */
1487         dump_acl,               /* ZFS V0 ACL                   */
1488         dump_uint8,             /* ZFS plain file               */
1489         dump_zpldir,            /* ZFS directory                */
1490         dump_zap,               /* ZFS master node              */
1491         dump_zap,               /* ZFS delete queue             */
1492         dump_uint8,             /* zvol object                  */
1493         dump_zap,               /* zvol prop                    */
1494         dump_uint8,             /* other uint8[]                */
1495         dump_uint64,            /* other uint64[]               */
1496         dump_zap,               /* other ZAP                    */
1497         dump_zap,               /* persistent error log         */
1498         dump_uint8,             /* SPA history                  */
1499         dump_uint64,            /* SPA history offsets          */
1500         dump_zap,               /* Pool properties              */
1501         dump_zap,               /* DSL permissions              */
1502         dump_acl,               /* ZFS ACL                      */
1503         dump_uint8,             /* ZFS SYSACL                   */
1504         dump_none,              /* FUID nvlist                  */
1505         dump_packed_nvlist,     /* FUID nvlist size             */
1506         dump_zap,               /* DSL dataset next clones      */
1507         dump_zap,               /* DSL scrub queue              */
1508         dump_zap,               /* ZFS user/group used          */
1509         dump_zap,               /* ZFS user/group quota         */
1510         dump_zap,               /* snapshot refcount tags       */
1511         dump_ddt_zap,           /* DDT ZAP object               */
1512         dump_zap,               /* DDT statistics               */
1513         dump_znode,             /* SA object                    */
1514         dump_zap,               /* SA Master Node               */
1515         dump_sa_attrs,          /* SA attribute registration    */
1516         dump_sa_layouts,        /* SA attribute layouts         */
1517         dump_zap,               /* DSL scrub translations       */
1518         dump_none,              /* fake dedup BP                */
1519         dump_zap,               /* deadlist                     */
1520         dump_none,              /* deadlist hdr                 */
1521         dump_zap,               /* dsl clones                   */
1522         dump_none,              /* bpobj subobjs                */
1523         dump_unknown,           /* Unknown type, must be last   */
1524 };
1525
1526 static void
1527 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1528 {
1529         dmu_buf_t *db = NULL;
1530         dmu_object_info_t doi;
1531         dnode_t *dn;
1532         void *bonus = NULL;
1533         size_t bsize = 0;
1534         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1535         char bonus_size[32];
1536         char aux[50];
1537         int error;
1538
1539         if (*print_header) {
1540                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1541                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1542                     "%full", "type");
1543                 *print_header = 0;
1544         }
1545
1546         if (object == 0) {
1547                 dn = DMU_META_DNODE(os);
1548         } else {
1549                 error = dmu_bonus_hold(os, object, FTAG, &db);
1550                 if (error)
1551                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1552                             object, error);
1553                 bonus = db->db_data;
1554                 bsize = db->db_size;
1555                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1556         }
1557         dmu_object_info_from_dnode(dn, &doi);
1558
1559         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1560         zdb_nicenum(doi.doi_data_block_size, dblk);
1561         zdb_nicenum(doi.doi_max_offset, lsize);
1562         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1563         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1564         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1565             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1566             doi.doi_max_offset);
1567
1568         aux[0] = '\0';
1569
1570         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1571                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1572                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1573         }
1574
1575         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1576                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1577                     ZDB_COMPRESS_NAME(doi.doi_compress));
1578         }
1579
1580         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1581             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1582             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1583
1584         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1585                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1586                     "", "", "", "", "", bonus_size, "bonus",
1587                     ZDB_OT_NAME(doi.doi_bonus_type));
1588         }
1589
1590         if (verbosity >= 4) {
1591                 (void) printf("\tdnode flags: %s%s%s\n",
1592                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1593                     "USED_BYTES " : "",
1594                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1595                     "USERUSED_ACCOUNTED " : "",
1596                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1597                     "SPILL_BLKPTR" : "");
1598                 (void) printf("\tdnode maxblkid: %llu\n",
1599                     (longlong_t)dn->dn_phys->dn_maxblkid);
1600
1601                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1602                     bonus, bsize);
1603                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1604                 *print_header = 1;
1605         }
1606
1607         if (verbosity >= 5)
1608                 dump_indirect(dn);
1609
1610         if (verbosity >= 5) {
1611                 /*
1612                  * Report the list of segments that comprise the object.
1613                  */
1614                 uint64_t start = 0;
1615                 uint64_t end;
1616                 uint64_t blkfill = 1;
1617                 int minlvl = 1;
1618
1619                 if (dn->dn_type == DMU_OT_DNODE) {
1620                         minlvl = 0;
1621                         blkfill = DNODES_PER_BLOCK;
1622                 }
1623
1624                 for (;;) {
1625                         char segsize[32];
1626                         error = dnode_next_offset(dn,
1627                             0, &start, minlvl, blkfill, 0);
1628                         if (error)
1629                                 break;
1630                         end = start;
1631                         error = dnode_next_offset(dn,
1632                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1633                         zdb_nicenum(end - start, segsize);
1634                         (void) printf("\t\tsegment [%016llx, %016llx)"
1635                             " size %5s\n", (u_longlong_t)start,
1636                             (u_longlong_t)end, segsize);
1637                         if (error)
1638                                 break;
1639                         start = end;
1640                 }
1641         }
1642
1643         if (db != NULL)
1644                 dmu_buf_rele(db, FTAG);
1645 }
1646
1647 static char *objset_types[DMU_OST_NUMTYPES] = {
1648         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1649
1650 static void
1651 dump_dir(objset_t *os)
1652 {
1653         dmu_objset_stats_t dds;
1654         uint64_t object, object_count;
1655         uint64_t refdbytes, usedobjs, scratch;
1656         char numbuf[32];
1657         char blkbuf[BP_SPRINTF_LEN + 20];
1658         char osname[MAXNAMELEN];
1659         char *type = "UNKNOWN";
1660         int verbosity = dump_opt['d'];
1661         int print_header = 1;
1662         int i, error;
1663
1664         dmu_objset_fast_stat(os, &dds);
1665
1666         if (dds.dds_type < DMU_OST_NUMTYPES)
1667                 type = objset_types[dds.dds_type];
1668
1669         if (dds.dds_type == DMU_OST_META) {
1670                 dds.dds_creation_txg = TXG_INITIAL;
1671                 usedobjs = os->os_rootbp->blk_fill;
1672                 refdbytes = os->os_spa->spa_dsl_pool->
1673                     dp_mos_dir->dd_phys->dd_used_bytes;
1674         } else {
1675                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1676         }
1677
1678         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1679
1680         zdb_nicenum(refdbytes, numbuf);
1681
1682         if (verbosity >= 4) {
1683                 (void) sprintf(blkbuf, ", rootbp ");
1684                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1685         } else {
1686                 blkbuf[0] = '\0';
1687         }
1688
1689         dmu_objset_name(os, osname);
1690
1691         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1692             "%s, %llu objects%s\n",
1693             osname, type, (u_longlong_t)dmu_objset_id(os),
1694             (u_longlong_t)dds.dds_creation_txg,
1695             numbuf, (u_longlong_t)usedobjs, blkbuf);
1696
1697         if (zopt_objects != 0) {
1698                 for (i = 0; i < zopt_objects; i++)
1699                         dump_object(os, zopt_object[i], verbosity,
1700                             &print_header);
1701                 (void) printf("\n");
1702                 return;
1703         }
1704
1705         if (dump_opt['i'] != 0 || verbosity >= 2)
1706                 dump_intent_log(dmu_objset_zil(os));
1707
1708         if (dmu_objset_ds(os) != NULL)
1709                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1710
1711         if (verbosity < 2)
1712                 return;
1713
1714         if (os->os_rootbp->blk_birth == 0)
1715                 return;
1716
1717         dump_object(os, 0, verbosity, &print_header);
1718         object_count = 0;
1719         if (DMU_USERUSED_DNODE(os) != NULL &&
1720             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1721                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1722                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1723         }
1724
1725         object = 0;
1726         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1727                 dump_object(os, object, verbosity, &print_header);
1728                 object_count++;
1729         }
1730
1731         ASSERT3U(object_count, ==, usedobjs);
1732
1733         (void) printf("\n");
1734
1735         if (error != ESRCH) {
1736                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1737                 abort();
1738         }
1739 }
1740
1741 static void
1742 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1743 {
1744         time_t timestamp = ub->ub_timestamp;
1745
1746         (void) printf(header ? header : "");
1747         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1748         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1749         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1750         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1751         (void) printf("\ttimestamp = %llu UTC = %s",
1752             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1753         if (dump_opt['u'] >= 3) {
1754                 char blkbuf[BP_SPRINTF_LEN];
1755                 sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1756                 (void) printf("\trootbp = %s\n", blkbuf);
1757         }
1758         (void) printf(footer ? footer : "");
1759 }
1760
1761 static void
1762 dump_config(spa_t *spa)
1763 {
1764         dmu_buf_t *db;
1765         size_t nvsize = 0;
1766         int error = 0;
1767
1768
1769         error = dmu_bonus_hold(spa->spa_meta_objset,
1770             spa->spa_config_object, FTAG, &db);
1771
1772         if (error == 0) {
1773                 nvsize = *(uint64_t *)db->db_data;
1774                 dmu_buf_rele(db, FTAG);
1775
1776                 (void) printf("\nMOS Configuration:\n");
1777                 dump_packed_nvlist(spa->spa_meta_objset,
1778                     spa->spa_config_object, (void *)&nvsize, 1);
1779         } else {
1780                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1781                     (u_longlong_t)spa->spa_config_object, error);
1782         }
1783 }
1784
1785 static void
1786 dump_cachefile(const char *cachefile)
1787 {
1788         int fd;
1789         struct stat64 statbuf;
1790         char *buf;
1791         nvlist_t *config;
1792
1793         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1794                 (void) printf("cannot open '%s': %s\n", cachefile,
1795                     strerror(errno));
1796                 exit(1);
1797         }
1798
1799         if (fstat64(fd, &statbuf) != 0) {
1800                 (void) printf("failed to stat '%s': %s\n", cachefile,
1801                     strerror(errno));
1802                 exit(1);
1803         }
1804
1805         if ((buf = malloc(statbuf.st_size)) == NULL) {
1806                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1807                     (u_longlong_t)statbuf.st_size);
1808                 exit(1);
1809         }
1810
1811         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1812                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1813                     (u_longlong_t)statbuf.st_size);
1814                 exit(1);
1815         }
1816
1817         (void) close(fd);
1818
1819         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1820                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1821                 exit(1);
1822         }
1823
1824         free(buf);
1825
1826         dump_nvlist(config, 0);
1827
1828         nvlist_free(config);
1829 }
1830
1831 #define ZDB_MAX_UB_HEADER_SIZE 32
1832
1833 static void
1834 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1835 {
1836         vdev_t vd;
1837         vdev_t *vdp = &vd;
1838         char header[ZDB_MAX_UB_HEADER_SIZE];
1839
1840         vd.vdev_ashift = ashift;
1841         vdp->vdev_top = vdp;
1842
1843         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1844                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1845                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1846
1847                 if (uberblock_verify(ub))
1848                         continue;
1849                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1850                     "Uberblock[%d]\n", i);
1851                 dump_uberblock(ub, header, "");
1852         }
1853 }
1854
1855 static void
1856 dump_label(const char *dev)
1857 {
1858         int fd;
1859         vdev_label_t label;
1860         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1861         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1862         struct stat64 statbuf;
1863         uint64_t psize, ashift;
1864         int len = strlen(dev) + 1;
1865
1866         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1867                 len++;
1868                 path = malloc(len);
1869                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1870         } else {
1871                 path = strdup(dev);
1872         }
1873
1874         if ((fd = open64(path, O_RDONLY)) < 0) {
1875                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
1876                 free(path);
1877                 exit(1);
1878         }
1879
1880         if (fstat64(fd, &statbuf) != 0) {
1881                 (void) printf("failed to stat '%s': %s\n", path,
1882                     strerror(errno));
1883                 free(path);
1884                 (void) close(fd);
1885                 exit(1);
1886         }
1887
1888         if (S_ISBLK(statbuf.st_mode)) {
1889                 (void) printf("cannot use '%s': character device required\n",
1890                     path);
1891                 free(path);
1892                 (void) close(fd);
1893                 exit(1);
1894         }
1895
1896         psize = statbuf.st_size;
1897         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1898
1899         for (int l = 0; l < VDEV_LABELS; l++) {
1900                 nvlist_t *config = NULL;
1901
1902                 (void) printf("--------------------------------------------\n");
1903                 (void) printf("LABEL %d\n", l);
1904                 (void) printf("--------------------------------------------\n");
1905
1906                 if (pread64(fd, &label, sizeof (label),
1907                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1908                         (void) printf("failed to read label %d\n", l);
1909                         continue;
1910                 }
1911
1912                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1913                         (void) printf("failed to unpack label %d\n", l);
1914                         ashift = SPA_MINBLOCKSHIFT;
1915                 } else {
1916                         nvlist_t *vdev_tree = NULL;
1917
1918                         dump_nvlist(config, 4);
1919                         if ((nvlist_lookup_nvlist(config,
1920                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1921                             (nvlist_lookup_uint64(vdev_tree,
1922                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1923                                 ashift = SPA_MINBLOCKSHIFT;
1924                         nvlist_free(config);
1925                 }
1926                 if (dump_opt['u'])
1927                         dump_label_uberblocks(&label, ashift);
1928         }
1929
1930         free(path);
1931         (void) close(fd);
1932 }
1933
1934 /*ARGSUSED*/
1935 static int
1936 dump_one_dir(const char *dsname, void *arg)
1937 {
1938         int error;
1939         objset_t *os;
1940
1941         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1942         if (error) {
1943                 (void) printf("Could not open %s, error %d\n", dsname, error);
1944                 return (0);
1945         }
1946         dump_dir(os);
1947         dmu_objset_disown(os, FTAG);
1948         fuid_table_destroy();
1949         sa_loaded = B_FALSE;
1950         return (0);
1951 }
1952
1953 /*
1954  * Block statistics.
1955  */
1956 typedef struct zdb_blkstats {
1957         uint64_t        zb_asize;
1958         uint64_t        zb_lsize;
1959         uint64_t        zb_psize;
1960         uint64_t        zb_count;
1961 } zdb_blkstats_t;
1962
1963 /*
1964  * Extended object types to report deferred frees and dedup auto-ditto blocks.
1965  */
1966 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
1967 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
1968 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
1969 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
1970
1971 static char *zdb_ot_extname[] = {
1972         "deferred free",
1973         "dedup ditto",
1974         "other",
1975         "Total",
1976 };
1977
1978 #define ZB_TOTAL        DN_MAX_LEVELS
1979
1980 typedef struct zdb_cb {
1981         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1982         uint64_t        zcb_dedup_asize;
1983         uint64_t        zcb_dedup_blocks;
1984         uint64_t        zcb_errors[256];
1985         int             zcb_readfails;
1986         int             zcb_haderrors;
1987         spa_t           *zcb_spa;
1988 } zdb_cb_t;
1989
1990 static void
1991 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
1992     dmu_object_type_t type)
1993 {
1994         uint64_t refcnt = 0;
1995
1996         ASSERT(type < ZDB_OT_TOTAL);
1997
1998         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1999                 return;
2000
2001         for (int i = 0; i < 4; i++) {
2002                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2003                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2004                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2005
2006                 zb->zb_asize += BP_GET_ASIZE(bp);
2007                 zb->zb_lsize += BP_GET_LSIZE(bp);
2008                 zb->zb_psize += BP_GET_PSIZE(bp);
2009                 zb->zb_count++;
2010         }
2011
2012         if (dump_opt['L'])
2013                 return;
2014
2015         if (BP_GET_DEDUP(bp)) {
2016                 ddt_t *ddt;
2017                 ddt_entry_t *dde;
2018
2019                 ddt = ddt_select(zcb->zcb_spa, bp);
2020                 ddt_enter(ddt);
2021                 dde = ddt_lookup(ddt, bp, B_FALSE);
2022
2023                 if (dde == NULL) {
2024                         refcnt = 0;
2025                 } else {
2026                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2027                         ddt_phys_decref(ddp);
2028                         refcnt = ddp->ddp_refcnt;
2029                         if (ddt_phys_total_refcnt(dde) == 0)
2030                                 ddt_remove(ddt, dde);
2031                 }
2032                 ddt_exit(ddt);
2033         }
2034
2035         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2036             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2037             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2038 }
2039
2040 static int
2041 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2042     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2043 {
2044         zdb_cb_t *zcb = arg;
2045         char blkbuf[BP_SPRINTF_LEN];
2046         dmu_object_type_t type;
2047         boolean_t is_metadata;
2048
2049         if (bp == NULL)
2050                 return (0);
2051
2052         type = BP_GET_TYPE(bp);
2053
2054         zdb_count_block(zcb, zilog, bp,
2055             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2056
2057         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2058
2059         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2060                 int ioerr;
2061                 size_t size = BP_GET_PSIZE(bp);
2062                 void *data = malloc(size);
2063                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2064
2065                 /* If it's an intent log block, failure is expected. */
2066                 if (zb->zb_level == ZB_ZIL_LEVEL)
2067                         flags |= ZIO_FLAG_SPECULATIVE;
2068
2069                 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
2070                     NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2071
2072                 free(data);
2073
2074                 if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) {
2075                         zcb->zcb_haderrors = 1;
2076                         zcb->zcb_errors[ioerr]++;
2077
2078                         if (dump_opt['b'] >= 2)
2079                                 sprintf_blkptr(blkbuf, bp);
2080                         else
2081                                 blkbuf[0] = '\0';
2082
2083                         (void) printf("zdb_blkptr_cb: "
2084                             "Got error %d reading "
2085                             "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2086                             ioerr,
2087                             (u_longlong_t)zb->zb_objset,
2088                             (u_longlong_t)zb->zb_object,
2089                             (u_longlong_t)zb->zb_level,
2090                             (u_longlong_t)zb->zb_blkid,
2091                             blkbuf);
2092                 }
2093         }
2094
2095         zcb->zcb_readfails = 0;
2096
2097         if (dump_opt['b'] >= 4) {
2098                 sprintf_blkptr(blkbuf, bp);
2099                 (void) printf("objset %llu object %llu "
2100                     "level %lld offset 0x%llx %s\n",
2101                     (u_longlong_t)zb->zb_objset,
2102                     (u_longlong_t)zb->zb_object,
2103                     (longlong_t)zb->zb_level,
2104                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2105                     blkbuf);
2106         }
2107
2108         return (0);
2109 }
2110
2111 static void
2112 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2113 {
2114         vdev_t *vd = sm->sm_ppd;
2115
2116         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2117             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2118 }
2119
2120 /* ARGSUSED */
2121 static void
2122 zdb_space_map_load(space_map_t *sm)
2123 {
2124 }
2125
2126 static void
2127 zdb_space_map_unload(space_map_t *sm)
2128 {
2129         space_map_vacate(sm, zdb_leak, sm);
2130 }
2131
2132 /* ARGSUSED */
2133 static void
2134 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2135 {
2136 }
2137
2138 static space_map_ops_t zdb_space_map_ops = {
2139         zdb_space_map_load,
2140         zdb_space_map_unload,
2141         NULL,   /* alloc */
2142         zdb_space_map_claim,
2143         NULL,   /* free */
2144         NULL    /* maxsize */
2145 };
2146
2147 static void
2148 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2149 {
2150         ddt_bookmark_t ddb = { 0 };
2151         ddt_entry_t dde;
2152         int error;
2153
2154         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2155                 blkptr_t blk;
2156                 ddt_phys_t *ddp = dde.dde_phys;
2157
2158                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2159                         return;
2160
2161                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2162
2163                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2164                         if (ddp->ddp_phys_birth == 0)
2165                                 continue;
2166                         ddt_bp_create(ddb.ddb_checksum,
2167                             &dde.dde_key, ddp, &blk);
2168                         if (p == DDT_PHYS_DITTO) {
2169                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2170                         } else {
2171                                 zcb->zcb_dedup_asize +=
2172                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2173                                 zcb->zcb_dedup_blocks++;
2174                         }
2175                 }
2176                 if (!dump_opt['L']) {
2177                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2178                         ddt_enter(ddt);
2179                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2180                         ddt_exit(ddt);
2181                 }
2182         }
2183
2184         ASSERT(error == ENOENT);
2185 }
2186
2187 static void
2188 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2189 {
2190         zcb->zcb_spa = spa;
2191
2192         if (!dump_opt['L']) {
2193                 vdev_t *rvd = spa->spa_root_vdev;
2194                 for (int c = 0; c < rvd->vdev_children; c++) {
2195                         vdev_t *vd = rvd->vdev_child[c];
2196                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2197                                 metaslab_t *msp = vd->vdev_ms[m];
2198                                 mutex_enter(&msp->ms_lock);
2199                                 space_map_unload(&msp->ms_map);
2200                                 VERIFY(space_map_load(&msp->ms_map,
2201                                     &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2202                                     spa->spa_meta_objset) == 0);
2203                                 msp->ms_map.sm_ppd = vd;
2204                                 mutex_exit(&msp->ms_lock);
2205                         }
2206                 }
2207         }
2208
2209         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2210
2211         zdb_ddt_leak_init(spa, zcb);
2212
2213         spa_config_exit(spa, SCL_CONFIG, FTAG);
2214 }
2215
2216 static void
2217 zdb_leak_fini(spa_t *spa)
2218 {
2219         if (!dump_opt['L']) {
2220                 vdev_t *rvd = spa->spa_root_vdev;
2221                 for (int c = 0; c < rvd->vdev_children; c++) {
2222                         vdev_t *vd = rvd->vdev_child[c];
2223                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2224                                 metaslab_t *msp = vd->vdev_ms[m];
2225                                 mutex_enter(&msp->ms_lock);
2226                                 space_map_unload(&msp->ms_map);
2227                                 mutex_exit(&msp->ms_lock);
2228                         }
2229                 }
2230         }
2231 }
2232
2233 /* ARGSUSED */
2234 static int
2235 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2236 {
2237         zdb_cb_t *zcb = arg;
2238
2239         if (dump_opt['b'] >= 4) {
2240                 char blkbuf[BP_SPRINTF_LEN];
2241                 sprintf_blkptr(blkbuf, bp);
2242                 (void) printf("[%s] %s\n",
2243                     "deferred free", blkbuf);
2244         }
2245         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2246         return (0);
2247 }
2248
2249 static int
2250 dump_block_stats(spa_t *spa)
2251 {
2252         zdb_cb_t zcb = { 0 };
2253         zdb_blkstats_t *zb, *tzb;
2254         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2255         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2256         int leaks = 0;
2257
2258         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
2259             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2260             (dump_opt['c'] == 1) ? "metadata " : "",
2261             dump_opt['c'] ? "checksums " : "",
2262             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2263             !dump_opt['L'] ? "nothing leaked " : "");
2264
2265         /*
2266          * Load all space maps as SM_ALLOC maps, then traverse the pool
2267          * claiming each block we discover.  If the pool is perfectly
2268          * consistent, the space maps will be empty when we're done.
2269          * Anything left over is a leak; any block we can't claim (because
2270          * it's not part of any space map) is a double allocation,
2271          * reference to a freed block, or an unclaimed log block.
2272          */
2273         zdb_leak_init(spa, &zcb);
2274
2275         /*
2276          * If there's a deferred-free bplist, process that first.
2277          */
2278         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2279             count_block_cb, &zcb, NULL);
2280         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2281                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2282                     count_block_cb, &zcb, NULL);
2283         }
2284         if (spa_feature_is_active(spa,
2285             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2286                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2287                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2288                     &zcb, NULL));
2289         }
2290
2291         if (dump_opt['c'] > 1)
2292                 flags |= TRAVERSE_PREFETCH_DATA;
2293
2294         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2295
2296         if (zcb.zcb_haderrors) {
2297                 (void) printf("\nError counts:\n\n");
2298                 (void) printf("\t%5s  %s\n", "errno", "count");
2299                 for (int e = 0; e < 256; e++) {
2300                         if (zcb.zcb_errors[e] != 0) {
2301                                 (void) printf("\t%5d  %llu\n",
2302                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2303                         }
2304                 }
2305         }
2306
2307         /*
2308          * Report any leaked segments.
2309          */
2310         zdb_leak_fini(spa);
2311
2312         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2313
2314         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2315         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2316
2317         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2318         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2319
2320         if (total_found == total_alloc) {
2321                 if (!dump_opt['L'])
2322                         (void) printf("\n\tNo leaks (block sum matches space"
2323                             " maps exactly)\n");
2324         } else {
2325                 (void) printf("block traversal size %llu != alloc %llu "
2326                     "(%s %lld)\n",
2327                     (u_longlong_t)total_found,
2328                     (u_longlong_t)total_alloc,
2329                     (dump_opt['L']) ? "unreachable" : "leaked",
2330                     (longlong_t)(total_alloc - total_found));
2331                 leaks = 1;
2332         }
2333
2334         if (tzb->zb_count == 0)
2335                 return (2);
2336
2337         (void) printf("\n");
2338         (void) printf("\tbp count:      %10llu\n",
2339             (u_longlong_t)tzb->zb_count);
2340         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2341             (u_longlong_t)tzb->zb_lsize,
2342             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2343         (void) printf("\tbp physical:   %10llu      avg:"
2344             " %6llu     compression: %6.2f\n",
2345             (u_longlong_t)tzb->zb_psize,
2346             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2347             (double)tzb->zb_lsize / tzb->zb_psize);
2348         (void) printf("\tbp allocated:  %10llu      avg:"
2349             " %6llu     compression: %6.2f\n",
2350             (u_longlong_t)tzb->zb_asize,
2351             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2352             (double)tzb->zb_lsize / tzb->zb_asize);
2353         (void) printf("\tbp deduped:    %10llu    ref>1:"
2354             " %6llu   deduplication: %6.2f\n",
2355             (u_longlong_t)zcb.zcb_dedup_asize,
2356             (u_longlong_t)zcb.zcb_dedup_blocks,
2357             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2358         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2359             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2360
2361         if (dump_opt['b'] >= 2) {
2362                 int l, t, level;
2363                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2364                     "\t  avg\t comp\t%%Total\tType\n");
2365
2366                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2367                         char csize[32], lsize[32], psize[32], asize[32];
2368                         char avg[32];
2369                         char *typename;
2370
2371                         if (t < DMU_OT_NUMTYPES)
2372                                 typename = dmu_ot[t].ot_name;
2373                         else
2374                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2375
2376                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2377                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2378                                     "\t%5s\t%5s\t%6s\t%s\n",
2379                                     "-",
2380                                     "-",
2381                                     "-",
2382                                     "-",
2383                                     "-",
2384                                     "-",
2385                                     "-",
2386                                     typename);
2387                                 continue;
2388                         }
2389
2390                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2391                                 level = (l == -1 ? ZB_TOTAL : l);
2392                                 zb = &zcb.zcb_type[level][t];
2393
2394                                 if (zb->zb_asize == 0)
2395                                         continue;
2396
2397                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2398                                         continue;
2399
2400                                 if (level == 0 && zb->zb_asize ==
2401                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2402                                         continue;
2403
2404                                 zdb_nicenum(zb->zb_count, csize);
2405                                 zdb_nicenum(zb->zb_lsize, lsize);
2406                                 zdb_nicenum(zb->zb_psize, psize);
2407                                 zdb_nicenum(zb->zb_asize, asize);
2408                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2409
2410                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2411                                     "\t%5.2f\t%6.2f\t",
2412                                     csize, lsize, psize, asize, avg,
2413                                     (double)zb->zb_lsize / zb->zb_psize,
2414                                     100.0 * zb->zb_asize / tzb->zb_asize);
2415
2416                                 if (level == ZB_TOTAL)
2417                                         (void) printf("%s\n", typename);
2418                                 else
2419                                         (void) printf("    L%d %s\n",
2420                                             level, typename);
2421                         }
2422                 }
2423         }
2424
2425         (void) printf("\n");
2426
2427         if (leaks)
2428                 return (2);
2429
2430         if (zcb.zcb_haderrors)
2431                 return (3);
2432
2433         return (0);
2434 }
2435
2436 typedef struct zdb_ddt_entry {
2437         ddt_key_t       zdde_key;
2438         uint64_t        zdde_ref_blocks;
2439         uint64_t        zdde_ref_lsize;
2440         uint64_t        zdde_ref_psize;
2441         uint64_t        zdde_ref_dsize;
2442         avl_node_t      zdde_node;
2443 } zdb_ddt_entry_t;
2444
2445 /* ARGSUSED */
2446 static int
2447 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2448     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2449 {
2450         avl_tree_t *t = arg;
2451         avl_index_t where;
2452         zdb_ddt_entry_t *zdde, zdde_search;
2453
2454         if (bp == NULL)
2455                 return (0);
2456
2457         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2458                 (void) printf("traversing objset %llu, %llu objects, "
2459                     "%lu blocks so far\n",
2460                     (u_longlong_t)zb->zb_objset,
2461                     (u_longlong_t)bp->blk_fill,
2462                     avl_numnodes(t));
2463         }
2464
2465         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2466             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2467                 return (0);
2468
2469         ddt_key_fill(&zdde_search.zdde_key, bp);
2470
2471         zdde = avl_find(t, &zdde_search, &where);
2472
2473         if (zdde == NULL) {
2474                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2475                 zdde->zdde_key = zdde_search.zdde_key;
2476                 avl_insert(t, zdde, where);
2477         }
2478
2479         zdde->zdde_ref_blocks += 1;
2480         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2481         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2482         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2483
2484         return (0);
2485 }
2486
2487 static void
2488 dump_simulated_ddt(spa_t *spa)
2489 {
2490         avl_tree_t t;
2491         void *cookie = NULL;
2492         zdb_ddt_entry_t *zdde;
2493         ddt_histogram_t ddh_total = { 0 };
2494         ddt_stat_t dds_total = { 0 };
2495
2496         avl_create(&t, ddt_entry_compare,
2497             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2498
2499         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2500
2501         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2502             zdb_ddt_add_cb, &t);
2503
2504         spa_config_exit(spa, SCL_CONFIG, FTAG);
2505
2506         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2507                 ddt_stat_t dds;
2508                 uint64_t refcnt = zdde->zdde_ref_blocks;
2509                 ASSERT(refcnt != 0);
2510
2511                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2512                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2513                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2514                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2515
2516                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2517                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2518                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2519                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2520
2521                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2522
2523                 umem_free(zdde, sizeof (*zdde));
2524         }
2525
2526         avl_destroy(&t);
2527
2528         ddt_histogram_stat(&dds_total, &ddh_total);
2529
2530         (void) printf("Simulated DDT histogram:\n");
2531
2532         zpool_dump_ddt(&dds_total, &ddh_total);
2533
2534         dump_dedup_ratio(&dds_total);
2535 }
2536
2537 static void
2538 dump_zpool(spa_t *spa)
2539 {
2540         dsl_pool_t *dp = spa_get_dsl(spa);
2541         int rc = 0;
2542
2543         if (dump_opt['S']) {
2544                 dump_simulated_ddt(spa);
2545                 return;
2546         }
2547
2548         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2549                 (void) printf("\nCached configuration:\n");
2550                 dump_nvlist(spa->spa_config, 8);
2551         }
2552
2553         if (dump_opt['C'])
2554                 dump_config(spa);
2555
2556         if (dump_opt['u'])
2557                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2558
2559         if (dump_opt['D'])
2560                 dump_all_ddts(spa);
2561
2562         if (dump_opt['d'] > 2 || dump_opt['m'])
2563                 dump_metaslabs(spa);
2564
2565         if (dump_opt['d'] || dump_opt['i']) {
2566                 dump_dir(dp->dp_meta_objset);
2567                 if (dump_opt['d'] >= 3) {
2568                         dump_bpobj(&spa->spa_deferred_bpobj,
2569                             "Deferred frees", 0);
2570                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2571                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2572                                     "Pool snapshot frees", 0);
2573                         }
2574
2575                         if (spa_feature_is_active(spa,
2576                             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2577                                 dump_bptree(spa->spa_meta_objset,
2578                                     spa->spa_dsl_pool->dp_bptree_obj,
2579                                     "Pool dataset frees");
2580                         }
2581                         dump_dtl(spa->spa_root_vdev, 0);
2582                 }
2583                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2584                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2585         }
2586         if (dump_opt['b'] || dump_opt['c'])
2587                 rc = dump_block_stats(spa);
2588
2589         if (dump_opt['s'])
2590                 show_pool_stats(spa);
2591
2592         if (dump_opt['h'])
2593                 dump_history(spa);
2594
2595         if (rc != 0)
2596                 exit(rc);
2597 }
2598
2599 #define ZDB_FLAG_CHECKSUM       0x0001
2600 #define ZDB_FLAG_DECOMPRESS     0x0002
2601 #define ZDB_FLAG_BSWAP          0x0004
2602 #define ZDB_FLAG_GBH            0x0008
2603 #define ZDB_FLAG_INDIRECT       0x0010
2604 #define ZDB_FLAG_PHYS           0x0020
2605 #define ZDB_FLAG_RAW            0x0040
2606 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2607
2608 int flagbits[256];
2609
2610 static void
2611 zdb_print_blkptr(blkptr_t *bp, int flags)
2612 {
2613         char blkbuf[BP_SPRINTF_LEN];
2614
2615         if (flags & ZDB_FLAG_BSWAP)
2616                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2617
2618         sprintf_blkptr(blkbuf, bp);
2619         (void) printf("%s\n", blkbuf);
2620 }
2621
2622 static void
2623 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2624 {
2625         int i;
2626
2627         for (i = 0; i < nbps; i++)
2628                 zdb_print_blkptr(&bp[i], flags);
2629 }
2630
2631 static void
2632 zdb_dump_gbh(void *buf, int flags)
2633 {
2634         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2635 }
2636
2637 static void
2638 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2639 {
2640         if (flags & ZDB_FLAG_BSWAP)
2641                 byteswap_uint64_array(buf, size);
2642         (void) write(1, buf, size);
2643 }
2644
2645 static void
2646 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2647 {
2648         uint64_t *d = (uint64_t *)buf;
2649         int nwords = size / sizeof (uint64_t);
2650         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2651         int i, j;
2652         char *hdr, *c;
2653
2654
2655         if (do_bswap)
2656                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2657         else
2658                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2659
2660         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2661
2662         for (i = 0; i < nwords; i += 2) {
2663                 (void) printf("%06llx:  %016llx  %016llx  ",
2664                     (u_longlong_t)(i * sizeof (uint64_t)),
2665                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2666                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2667
2668                 c = (char *)&d[i];
2669                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2670                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2671                 (void) printf("\n");
2672         }
2673 }
2674
2675 /*
2676  * There are two acceptable formats:
2677  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2678  *      child[.child]*    - For example: 0.1.1
2679  *
2680  * The second form can be used to specify arbitrary vdevs anywhere
2681  * in the heirarchy.  For example, in a pool with a mirror of
2682  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2683  */
2684 static vdev_t *
2685 zdb_vdev_lookup(vdev_t *vdev, char *path)
2686 {
2687         char *s, *p, *q;
2688         int i;
2689
2690         if (vdev == NULL)
2691                 return (NULL);
2692
2693         /* First, assume the x.x.x.x format */
2694         i = (int)strtoul(path, &s, 10);
2695         if (s == path || (s && *s != '.' && *s != '\0'))
2696                 goto name;
2697         if (i < 0 || i >= vdev->vdev_children)
2698                 return (NULL);
2699
2700         vdev = vdev->vdev_child[i];
2701         if (*s == '\0')
2702                 return (vdev);
2703         return (zdb_vdev_lookup(vdev, s+1));
2704
2705 name:
2706         for (i = 0; i < vdev->vdev_children; i++) {
2707                 vdev_t *vc = vdev->vdev_child[i];
2708
2709                 if (vc->vdev_path == NULL) {
2710                         vc = zdb_vdev_lookup(vc, path);
2711                         if (vc == NULL)
2712                                 continue;
2713                         else
2714                                 return (vc);
2715                 }
2716
2717                 p = strrchr(vc->vdev_path, '/');
2718                 p = p ? p + 1 : vc->vdev_path;
2719                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2720
2721                 if (strcmp(vc->vdev_path, path) == 0)
2722                         return (vc);
2723                 if (strcmp(p, path) == 0)
2724                         return (vc);
2725                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2726                         return (vc);
2727         }
2728
2729         return (NULL);
2730 }
2731
2732 /*
2733  * Read a block from a pool and print it out.  The syntax of the
2734  * block descriptor is:
2735  *
2736  *      pool:vdev_specifier:offset:size[:flags]
2737  *
2738  *      pool           - The name of the pool you wish to read from
2739  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2740  *      offset         - offset, in hex, in bytes
2741  *      size           - Amount of data to read, in hex, in bytes
2742  *      flags          - A string of characters specifying options
2743  *               b: Decode a blkptr at given offset within block
2744  *              *c: Calculate and display checksums
2745  *               d: Decompress data before dumping
2746  *               e: Byteswap data before dumping
2747  *               g: Display data as a gang block header
2748  *               i: Display as an indirect block
2749  *               p: Do I/O to physical offset
2750  *               r: Dump raw data to stdout
2751  *
2752  *              * = not yet implemented
2753  */
2754 static void
2755 zdb_read_block(char *thing, spa_t *spa)
2756 {
2757         blkptr_t blk, *bp = &blk;
2758         dva_t *dva = bp->blk_dva;
2759         int flags = 0;
2760         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2761         zio_t *zio;
2762         vdev_t *vd;
2763         void *pbuf, *lbuf, *buf;
2764         char *s, *p, *dup, *vdev, *flagstr;
2765         int i, error;
2766
2767         dup = strdup(thing);
2768         s = strtok(dup, ":");
2769         vdev = s ? s : "";
2770         s = strtok(NULL, ":");
2771         offset = strtoull(s ? s : "", NULL, 16);
2772         s = strtok(NULL, ":");
2773         size = strtoull(s ? s : "", NULL, 16);
2774         s = strtok(NULL, ":");
2775         flagstr = s ? s : "";
2776
2777         s = NULL;
2778         if (size == 0)
2779                 s = "size must not be zero";
2780         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2781                 s = "size must be a multiple of sector size";
2782         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2783                 s = "offset must be a multiple of sector size";
2784         if (s) {
2785                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2786                 free(dup);
2787                 return;
2788         }
2789
2790         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2791                 for (i = 0; flagstr[i]; i++) {
2792                         int bit = flagbits[(uchar_t)flagstr[i]];
2793
2794                         if (bit == 0) {
2795                                 (void) printf("***Invalid flag: %c\n",
2796                                     flagstr[i]);
2797                                 continue;
2798                         }
2799                         flags |= bit;
2800
2801                         /* If it's not something with an argument, keep going */
2802                         if ((bit & (ZDB_FLAG_CHECKSUM |
2803                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2804                                 continue;
2805
2806                         p = &flagstr[i + 1];
2807                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2808                                 blkptr_offset = strtoull(p, &p, 16);
2809                         if (*p != ':' && *p != '\0') {
2810                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2811                                 free(dup);
2812                                 return;
2813                         }
2814                 }
2815         }
2816
2817         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2818         if (vd == NULL) {
2819                 (void) printf("***Invalid vdev: %s\n", vdev);
2820                 free(dup);
2821                 return;
2822         } else {
2823                 if (vd->vdev_path)
2824                         (void) fprintf(stderr, "Found vdev: %s\n",
2825                             vd->vdev_path);
2826                 else
2827                         (void) fprintf(stderr, "Found vdev type: %s\n",
2828                             vd->vdev_ops->vdev_op_type);
2829         }
2830
2831         psize = size;
2832         lsize = size;
2833
2834         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2835         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2836
2837         BP_ZERO(bp);
2838
2839         DVA_SET_VDEV(&dva[0], vd->vdev_id);
2840         DVA_SET_OFFSET(&dva[0], offset);
2841         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2842         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2843
2844         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2845
2846         BP_SET_LSIZE(bp, lsize);
2847         BP_SET_PSIZE(bp, psize);
2848         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2849         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2850         BP_SET_TYPE(bp, DMU_OT_NONE);
2851         BP_SET_LEVEL(bp, 0);
2852         BP_SET_DEDUP(bp, 0);
2853         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2854
2855         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2856         zio = zio_root(spa, NULL, NULL, 0);
2857
2858         if (vd == vd->vdev_top) {
2859                 /*
2860                  * Treat this as a normal block read.
2861                  */
2862                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2863                     ZIO_PRIORITY_SYNC_READ,
2864                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2865         } else {
2866                 /*
2867                  * Treat this as a vdev child I/O.
2868                  */
2869                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2870                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2871                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2872                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2873                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2874         }
2875
2876         error = zio_wait(zio);
2877         spa_config_exit(spa, SCL_STATE, FTAG);
2878
2879         if (error) {
2880                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2881                 goto out;
2882         }
2883
2884         if (flags & ZDB_FLAG_DECOMPRESS) {
2885                 /*
2886                  * We don't know how the data was compressed, so just try
2887                  * every decompress function at every inflated blocksize.
2888                  */
2889                 enum zio_compress c;
2890                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2891                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2892
2893                 bcopy(pbuf, pbuf2, psize);
2894
2895                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2896                     SPA_MAXBLOCKSIZE - psize) == 0);
2897
2898                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2899                     SPA_MAXBLOCKSIZE - psize) == 0);
2900
2901                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2902                     lsize -= SPA_MINBLOCKSIZE) {
2903                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2904                                 if (zio_decompress_data(c, pbuf, lbuf,
2905                                     psize, lsize) == 0 &&
2906                                     zio_decompress_data(c, pbuf2, lbuf2,
2907                                     psize, lsize) == 0 &&
2908                                     bcmp(lbuf, lbuf2, lsize) == 0)
2909                                         break;
2910                         }
2911                         if (c != ZIO_COMPRESS_FUNCTIONS)
2912                                 break;
2913                         lsize -= SPA_MINBLOCKSIZE;
2914                 }
2915
2916                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2917                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2918
2919                 if (lsize <= psize) {
2920                         (void) printf("Decompress of %s failed\n", thing);
2921                         goto out;
2922                 }
2923                 buf = lbuf;
2924                 size = lsize;
2925         } else {
2926                 buf = pbuf;
2927                 size = psize;
2928         }
2929
2930         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2931                 zdb_print_blkptr((blkptr_t *)(void *)
2932                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2933         else if (flags & ZDB_FLAG_RAW)
2934                 zdb_dump_block_raw(buf, size, flags);
2935         else if (flags & ZDB_FLAG_INDIRECT)
2936                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2937                     flags);
2938         else if (flags & ZDB_FLAG_GBH)
2939                 zdb_dump_gbh(buf, flags);
2940         else
2941                 zdb_dump_block(thing, buf, size, flags);
2942
2943 out:
2944         umem_free(pbuf, SPA_MAXBLOCKSIZE);
2945         umem_free(lbuf, SPA_MAXBLOCKSIZE);
2946         free(dup);
2947 }
2948
2949 static boolean_t
2950 pool_match(nvlist_t *cfg, char *tgt)
2951 {
2952         uint64_t v, guid = strtoull(tgt, NULL, 0);
2953         char *s;
2954
2955         if (guid != 0) {
2956                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2957                         return (v == guid);
2958         } else {
2959                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2960                         return (strcmp(s, tgt) == 0);
2961         }
2962         return (B_FALSE);
2963 }
2964
2965 static char *
2966 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2967 {
2968         nvlist_t *pools;
2969         nvlist_t *match = NULL;
2970         char *name = NULL;
2971         char *sepp = NULL;
2972         char sep;
2973         int count = 0;
2974         importargs_t args = { 0 };
2975
2976         args.paths = dirc;
2977         args.path = dirv;
2978         args.can_be_active = B_TRUE;
2979
2980         if ((sepp = strpbrk(*target, "/@")) != NULL) {
2981                 sep = *sepp;
2982                 *sepp = '\0';
2983         }
2984
2985         pools = zpool_search_import(g_zfs, &args);
2986
2987         if (pools != NULL) {
2988                 nvpair_t *elem = NULL;
2989                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2990                         verify(nvpair_value_nvlist(elem, configp) == 0);
2991                         if (pool_match(*configp, *target)) {
2992                                 count++;
2993                                 if (match != NULL) {
2994                                         /* print previously found config */
2995                                         if (name != NULL) {
2996                                                 (void) printf("%s\n", name);
2997                                                 dump_nvlist(match, 8);
2998                                                 name = NULL;
2999                                         }
3000                                         (void) printf("%s\n",
3001                                             nvpair_name(elem));
3002                                         dump_nvlist(*configp, 8);
3003                                 } else {
3004                                         match = *configp;
3005                                         name = nvpair_name(elem);
3006                                 }
3007                         }
3008                 }
3009         }
3010         if (count > 1)
3011                 (void) fatal("\tMatched %d pools - use pool GUID "
3012                     "instead of pool name or \n"
3013                     "\tpool name part of a dataset name to select pool", count);
3014
3015         if (sepp)
3016                 *sepp = sep;
3017         /*
3018          * If pool GUID was specified for pool id, replace it with pool name
3019          */
3020         if (name && (strstr(*target, name) != *target)) {
3021                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3022
3023                 *target = umem_alloc(sz, UMEM_NOFAIL);
3024                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3025         }
3026
3027         *configp = name ? match : NULL;
3028
3029         return (name);
3030 }
3031
3032 int
3033 main(int argc, char **argv)
3034 {
3035         int i, c;
3036         struct rlimit rl = { 1024, 1024 };
3037         spa_t *spa = NULL;
3038         objset_t *os = NULL;
3039         int dump_all = 1;
3040         int verbose = 0;
3041         int error = 0;
3042         char **searchdirs = NULL;
3043         int nsearch = 0;
3044         char *target;
3045         nvlist_t *policy = NULL;
3046         uint64_t max_txg = UINT64_MAX;
3047         int rewind = ZPOOL_NEVER_REWIND;
3048
3049         (void) setrlimit(RLIMIT_NOFILE, &rl);
3050         (void) enable_extended_FILE_stdio(-1, -1);
3051
3052         dprintf_setup(&argc, argv);
3053
3054         while ((c = getopt(argc, argv, "bcdhilmsuCDRSAFLXevp:t:U:P")) != -1) {
3055                 switch (c) {
3056                 case 'b':
3057                 case 'c':
3058                 case 'd':
3059                 case 'h':
3060                 case 'i':
3061                 case 'l':
3062                 case 'm':
3063                 case 's':
3064                 case 'u':
3065                 case 'C':
3066                 case 'D':
3067                 case 'R':
3068                 case 'S':
3069                         dump_opt[c]++;
3070                         dump_all = 0;
3071                         break;
3072                 case 'A':
3073                 case 'F':
3074                 case 'L':
3075                 case 'X':
3076                 case 'e':
3077                 case 'P':
3078                         dump_opt[c]++;
3079                         break;
3080                 case 'v':
3081                         verbose++;
3082                         break;
3083                 case 'p':
3084                         if (searchdirs == NULL) {
3085                                 searchdirs = umem_alloc(sizeof (char *),
3086                                     UMEM_NOFAIL);
3087                         } else {
3088                                 char **tmp = umem_alloc((nsearch + 1) *
3089                                     sizeof (char *), UMEM_NOFAIL);
3090                                 bcopy(searchdirs, tmp, nsearch *
3091                                     sizeof (char *));
3092                                 umem_free(searchdirs,
3093                                     nsearch * sizeof (char *));
3094                                 searchdirs = tmp;
3095                         }
3096                         searchdirs[nsearch++] = optarg;
3097                         break;
3098                 case 't':
3099                         max_txg = strtoull(optarg, NULL, 0);
3100                         if (max_txg < TXG_INITIAL) {
3101                                 (void) fprintf(stderr, "incorrect txg "
3102                                     "specified: %s\n", optarg);
3103                                 usage();
3104                         }
3105                         break;
3106                 case 'U':
3107                         spa_config_path = optarg;
3108                         break;
3109                 default:
3110                         usage();
3111                         break;
3112                 }
3113         }
3114
3115         if (!dump_opt['e'] && searchdirs != NULL) {
3116                 (void) fprintf(stderr, "-p option requires use of -e\n");
3117                 usage();
3118         }
3119
3120         kernel_init(FREAD);
3121         g_zfs = libzfs_init();
3122         ASSERT(g_zfs != NULL);
3123
3124         if (dump_all)
3125                 verbose = MAX(verbose, 1);
3126
3127         for (c = 0; c < 256; c++) {
3128                 if (dump_all && !strchr("elAFLRSXP", c))
3129                         dump_opt[c] = 1;
3130                 if (dump_opt[c])
3131                         dump_opt[c] += verbose;
3132         }
3133
3134         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3135         zfs_recover = (dump_opt['A'] > 1);
3136
3137         argc -= optind;
3138         argv += optind;
3139
3140         if (argc < 2 && dump_opt['R'])
3141                 usage();
3142         if (argc < 1) {
3143                 if (!dump_opt['e'] && dump_opt['C']) {
3144                         dump_cachefile(spa_config_path);
3145                         return (0);
3146                 }
3147                 usage();
3148         }
3149
3150         if (dump_opt['l']) {
3151                 dump_label(argv[0]);
3152                 return (0);
3153         }
3154
3155         if (dump_opt['X'] || dump_opt['F'])
3156                 rewind = ZPOOL_DO_REWIND |
3157                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3158
3159         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3160             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3161             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3162                 fatal("internal error: %s", strerror(ENOMEM));
3163
3164         error = 0;
3165         target = argv[0];
3166
3167         if (dump_opt['e']) {
3168                 nvlist_t *cfg = NULL;
3169                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3170
3171                 error = ENOENT;
3172                 if (name) {
3173                         if (dump_opt['C'] > 1) {
3174                                 (void) printf("\nConfiguration for import:\n");
3175                                 dump_nvlist(cfg, 8);
3176                         }
3177                         if (nvlist_add_nvlist(cfg,
3178                             ZPOOL_REWIND_POLICY, policy) != 0) {
3179                                 fatal("can't open '%s': %s",
3180                                     target, strerror(ENOMEM));
3181                         }
3182                         if ((error = spa_import(name, cfg, NULL,
3183                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3184                                 error = spa_import(name, cfg, NULL,
3185                                     ZFS_IMPORT_VERBATIM);
3186                         }
3187                 }
3188         }
3189
3190         if (error == 0) {
3191                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3192                         error = spa_open_rewind(target, &spa, FTAG, policy,
3193                             NULL);
3194                         if (error) {
3195                                 /*
3196                                  * If we're missing the log device then
3197                                  * try opening the pool after clearing the
3198                                  * log state.
3199                                  */
3200                                 mutex_enter(&spa_namespace_lock);
3201                                 if ((spa = spa_lookup(target)) != NULL &&
3202                                     spa->spa_log_state == SPA_LOG_MISSING) {
3203                                         spa->spa_log_state = SPA_LOG_CLEAR;
3204                                         error = 0;
3205                                 }
3206                                 mutex_exit(&spa_namespace_lock);
3207
3208                                 if (!error) {
3209                                         error = spa_open_rewind(target, &spa,
3210                                             FTAG, policy, NULL);
3211                                 }
3212                         }
3213                 } else {
3214                         error = dmu_objset_own(target, DMU_OST_ANY,
3215                             B_TRUE, FTAG, &os);
3216                 }
3217         }
3218         nvlist_free(policy);
3219
3220         if (error)
3221                 fatal("can't open '%s': %s", target, strerror(error));
3222
3223         argv++;
3224         argc--;
3225         if (!dump_opt['R']) {
3226                 if (argc > 0) {
3227                         zopt_objects = argc;
3228                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3229                         for (i = 0; i < zopt_objects; i++) {
3230                                 errno = 0;
3231                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3232                                 if (zopt_object[i] == 0 && errno != 0)
3233                                         fatal("bad number %s: %s",
3234                                             argv[i], strerror(errno));
3235                         }
3236                 }
3237                 if (os != NULL) {
3238                         dump_dir(os);
3239                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3240                         dump_dir(spa->spa_meta_objset);
3241                 } else {
3242                         dump_zpool(spa);
3243                 }
3244         } else {
3245                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3246                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3247                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3248                 flagbits['e'] = ZDB_FLAG_BSWAP;
3249                 flagbits['g'] = ZDB_FLAG_GBH;
3250                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3251                 flagbits['p'] = ZDB_FLAG_PHYS;
3252                 flagbits['r'] = ZDB_FLAG_RAW;
3253
3254                 for (i = 0; i < argc; i++)
3255                         zdb_read_block(argv[i], spa);
3256         }
3257
3258         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3259
3260         fuid_table_destroy();
3261         sa_loaded = B_FALSE;
3262
3263         libzfs_fini(g_zfs);
3264         kernel_fini();
3265
3266         return (0);
3267 }