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 #include <libzfs.h>
  62
  63 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?        \
  64         zio_compress_table[(idx)].ci_name : "UNKNOWN")
  65 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?        \
  66         zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  67 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?     \
  68         dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?  \
  69         dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
  70 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :             \
  71         (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
  72         DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
  73
  74 #ifndef lint
  75 extern int zfs_recover;
  76 #else
  77 int zfs_recover;
  78 #endif
  79
  80 const char cmdname[] = "zdb";
  81 uint8_t dump_opt[256];
  82
  83 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  84
  85 extern void dump_intent_log(zilog_t *);
  86 uint64_t *zopt_object = NULL;
  87 int zopt_objects = 0;
  88 libzfs_handle_t *g_zfs;
  89 uint64_t max_inflight = 200;
  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(void)
  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             "[-U config] [-M inflight I/Os] poolname [object...]\n"
 113             "       %s [-divPA] [-e -p path...] [-U config] dataset "
 114             "[object...]\n"
 115             "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
 116             "poolname [vdev [metaslab...]]\n"
 117             "       %s -R [-A] [-e [-p path...]] poolname "
 118             "vdev:offset:size[:flags]\n"
 119             "       %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
 120             "       %s -l [-uA] device\n"
 121             "       %s -C [-A] [-U config]\n\n",
 122             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 123
 124         (void) fprintf(stderr, "    Dataset name must include at least one "
 125             "separator character '/' or '@'\n");
 126         (void) fprintf(stderr, "    If dataset name is specified, only that "
 127             "dataset is dumped\n");
 128         (void) fprintf(stderr, "    If object numbers are specified, only "
 129             "those objects are dumped\n\n");
 130         (void) fprintf(stderr, "    Options to control amount of output:\n");
 131         (void) fprintf(stderr, "        -u uberblock\n");
 132         (void) fprintf(stderr, "        -d dataset(s)\n");
 133         (void) fprintf(stderr, "        -i intent logs\n");
 134         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 135         (void) fprintf(stderr, "        -h pool history\n");
 136         (void) fprintf(stderr, "        -b block statistics\n");
 137         (void) fprintf(stderr, "        -m metaslabs\n");
 138         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 139             "all data) blocks\n");
 140         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 141         (void) fprintf(stderr, "        -D dedup statistics\n");
 142         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 143         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 144         (void) fprintf(stderr, "        -l dump label contents\n");
 145         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 146             "load spacemaps)\n");
 147         (void) fprintf(stderr, "        -R read and display block from a "
 148             "device\n\n");
 149         (void) fprintf(stderr, "    Below options are intended for use "
 150             "with other options (except -l):\n");
 151         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 152             "panic recovery (-AA) or both (-AAA)\n");
 153         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 154             "safe range of transaction groups\n");
 155         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 156             "cachefile\n");
 157         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 158             "work with dataset)\n");
 159         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 160             "has altroot/not in a cachefile\n");
 161         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 162             "-e to specify path to vdev dir\n");
 163         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 164         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 165             "searching for uberblocks\n");
 166         (void) fprintf(stderr, "        -M <number of inflight I/Os> -- "
 167             "specify the maximum number of checksumming I/Os [default is 200]\n");
 168         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 169             "to make only that option verbose\n");
 170         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 171         exit(1);
 172 }
 173
 174 /*
 175  * Called for usage errors that are discovered after a call to spa_open(),
 176  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 177  */
 178
 179 static void
 180 fatal(const char *fmt, ...)
 181 {
 182         va_list ap;
 183
 184         va_start(ap, fmt);
 185         (void) fprintf(stderr, "%s: ", cmdname);
 186         (void) vfprintf(stderr, fmt, ap);
 187         va_end(ap);
 188         (void) fprintf(stderr, "\n");
 189
 190         exit(1);
 191 }
 192
 193 /* ARGSUSED */
 194 static void
 195 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 196 {
 197         nvlist_t *nv;
 198         size_t nvsize = *(uint64_t *)data;
 199         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 200
 201         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 202
 203         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 204
 205         umem_free(packed, nvsize);
 206
 207         dump_nvlist(nv, 8);
 208
 209         nvlist_free(nv);
 210 }
 211
 212 static void
 213 zdb_nicenum(uint64_t num, char *buf)
 214 {
 215         if (dump_opt['P'])
 216                 (void) sprintf(buf, "%llu", (longlong_t)num);
 217         else
 218                 nicenum(num, buf);
 219 }
 220
 221 const char dump_zap_stars[] = "****************************************";
 222 const int dump_zap_width = sizeof (dump_zap_stars) - 1;
 223
 224 static void
 225 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
 226 {
 227         int i;
 228         int minidx = ZAP_HISTOGRAM_SIZE - 1;
 229         int maxidx = 0;
 230         uint64_t max = 0;
 231
 232         for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
 233                 if (histo[i] > max)
 234                         max = histo[i];
 235                 if (histo[i] > 0 && i > maxidx)
 236                         maxidx = i;
 237                 if (histo[i] > 0 && i < minidx)
 238                         minidx = i;
 239         }
 240
 241         if (max < dump_zap_width)
 242                 max = dump_zap_width;
 243
 244         for (i = minidx; i <= maxidx; i++)
 245                 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
 246                     &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
 247 }
 248
 249 static void
 250 dump_zap_stats(objset_t *os, uint64_t object)
 251 {
 252         int error;
 253         zap_stats_t zs;
 254
 255         error = zap_get_stats(os, object, &zs);
 256         if (error)
 257                 return;
 258
 259         if (zs.zs_ptrtbl_len == 0) {
 260                 ASSERT(zs.zs_num_blocks == 1);
 261                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 262                     (u_longlong_t)zs.zs_blocksize,
 263                     (u_longlong_t)zs.zs_num_entries);
 264                 return;
 265         }
 266
 267         (void) printf("\tFat ZAP stats:\n");
 268
 269         (void) printf("\t\tPointer table:\n");
 270         (void) printf("\t\t\t%llu elements\n",
 271             (u_longlong_t)zs.zs_ptrtbl_len);
 272         (void) printf("\t\t\tzt_blk: %llu\n",
 273             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 274         (void) printf("\t\t\tzt_numblks: %llu\n",
 275             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 276         (void) printf("\t\t\tzt_shift: %llu\n",
 277             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 278         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 279             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 280         (void) printf("\t\t\tzt_nextblk: %llu\n",
 281             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 282
 283         (void) printf("\t\tZAP entries: %llu\n",
 284             (u_longlong_t)zs.zs_num_entries);
 285         (void) printf("\t\tLeaf blocks: %llu\n",
 286             (u_longlong_t)zs.zs_num_leafs);
 287         (void) printf("\t\tTotal blocks: %llu\n",
 288             (u_longlong_t)zs.zs_num_blocks);
 289         (void) printf("\t\tzap_block_type: 0x%llx\n",
 290             (u_longlong_t)zs.zs_block_type);
 291         (void) printf("\t\tzap_magic: 0x%llx\n",
 292             (u_longlong_t)zs.zs_magic);
 293         (void) printf("\t\tzap_salt: 0x%llx\n",
 294             (u_longlong_t)zs.zs_salt);
 295
 296         (void) printf("\t\tLeafs with 2^n pointers:\n");
 297         dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
 298
 299         (void) printf("\t\tBlocks with n*5 entries:\n");
 300         dump_zap_histogram(zs.zs_blocks_with_n5_entries);
 301
 302         (void) printf("\t\tBlocks n/10 full:\n");
 303         dump_zap_histogram(zs.zs_blocks_n_tenths_full);
 304
 305         (void) printf("\t\tEntries with n chunks:\n");
 306         dump_zap_histogram(zs.zs_entries_using_n_chunks);
 307
 308         (void) printf("\t\tBuckets with n entries:\n");
 309         dump_zap_histogram(zs.zs_buckets_with_n_entries);
 310 }
 311
 312 /*ARGSUSED*/
 313 static void
 314 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 315 {
 316 }
 317
 318 /*ARGSUSED*/
 319 static void
 320 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 321 {
 322         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 323 }
 324
 325 /*ARGSUSED*/
 326 void
 327 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 328 {
 329 }
 330
 331 /*ARGSUSED*/
 332 static void
 333 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 334 {
 335 }
 336
 337 /*ARGSUSED*/
 338 static void
 339 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 340 {
 341         zap_cursor_t zc;
 342         zap_attribute_t attr;
 343         void *prop;
 344         int i;
 345
 346         dump_zap_stats(os, object);
 347         (void) printf("\n");
 348
 349         for (zap_cursor_init(&zc, os, object);
 350             zap_cursor_retrieve(&zc, &attr) == 0;
 351             zap_cursor_advance(&zc)) {
 352                 (void) printf("\t\t%s = ", attr.za_name);
 353                 if (attr.za_num_integers == 0) {
 354                         (void) printf("\n");
 355                         continue;
 356                 }
 357                 prop = umem_zalloc(attr.za_num_integers *
 358                     attr.za_integer_length, UMEM_NOFAIL);
 359                 (void) zap_lookup(os, object, attr.za_name,
 360                     attr.za_integer_length, attr.za_num_integers, prop);
 361                 if (attr.za_integer_length == 1) {
 362                         (void) printf("%s", (char *)prop);
 363                 } else {
 364                         for (i = 0; i < attr.za_num_integers; i++) {
 365                                 switch (attr.za_integer_length) {
 366                                 case 2:
 367                                         (void) printf("%u ",
 368                                             ((uint16_t *)prop)[i]);
 369                                         break;
 370                                 case 4:
 371                                         (void) printf("%u ",
 372                                             ((uint32_t *)prop)[i]);
 373                                         break;
 374                                 case 8:
 375                                         (void) printf("%lld ",
 376                                             (u_longlong_t)((int64_t *)prop)[i]);
 377                                         break;
 378                                 }
 379                         }
 380                 }
 381                 (void) printf("\n");
 382                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 383         }
 384         zap_cursor_fini(&zc);
 385 }
 386
 387 /*ARGSUSED*/
 388 static void
 389 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 390 {
 391         dump_zap_stats(os, object);
 392         /* contents are printed elsewhere, properly decoded */
 393 }
 394
 395 /*ARGSUSED*/
 396 static void
 397 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 398 {
 399         zap_cursor_t zc;
 400         zap_attribute_t attr;
 401
 402         dump_zap_stats(os, object);
 403         (void) printf("\n");
 404
 405         for (zap_cursor_init(&zc, os, object);
 406             zap_cursor_retrieve(&zc, &attr) == 0;
 407             zap_cursor_advance(&zc)) {
 408                 (void) printf("\t\t%s = ", attr.za_name);
 409                 if (attr.za_num_integers == 0) {
 410                         (void) printf("\n");
 411                         continue;
 412                 }
 413                 (void) printf(" %llx : [%d:%d:%d]\n",
 414                     (u_longlong_t)attr.za_first_integer,
 415                     (int)ATTR_LENGTH(attr.za_first_integer),
 416                     (int)ATTR_BSWAP(attr.za_first_integer),
 417                     (int)ATTR_NUM(attr.za_first_integer));
 418         }
 419         zap_cursor_fini(&zc);
 420 }
 421
 422 /*ARGSUSED*/
 423 static void
 424 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 425 {
 426         zap_cursor_t zc;
 427         zap_attribute_t attr;
 428         uint16_t *layout_attrs;
 429         int i;
 430
 431         dump_zap_stats(os, object);
 432         (void) printf("\n");
 433
 434         for (zap_cursor_init(&zc, os, object);
 435             zap_cursor_retrieve(&zc, &attr) == 0;
 436             zap_cursor_advance(&zc)) {
 437                 (void) printf("\t\t%s = [", attr.za_name);
 438                 if (attr.za_num_integers == 0) {
 439                         (void) printf("\n");
 440                         continue;
 441                 }
 442
 443                 VERIFY(attr.za_integer_length == 2);
 444                 layout_attrs = umem_zalloc(attr.za_num_integers *
 445                     attr.za_integer_length, UMEM_NOFAIL);
 446
 447                 VERIFY(zap_lookup(os, object, attr.za_name,
 448                     attr.za_integer_length,
 449                     attr.za_num_integers, layout_attrs) == 0);
 450
 451                 for (i = 0; i != attr.za_num_integers; i++)
 452                         (void) printf(" %d ", (int)layout_attrs[i]);
 453                 (void) printf("]\n");
 454                 umem_free(layout_attrs,
 455                     attr.za_num_integers * attr.za_integer_length);
 456         }
 457         zap_cursor_fini(&zc);
 458 }
 459
 460 /*ARGSUSED*/
 461 static void
 462 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 463 {
 464         zap_cursor_t zc;
 465         zap_attribute_t attr;
 466         const char *typenames[] = {
 467                 /* 0 */ "not specified",
 468                 /* 1 */ "FIFO",
 469                 /* 2 */ "Character Device",
 470                 /* 3 */ "3 (invalid)",
 471                 /* 4 */ "Directory",
 472                 /* 5 */ "5 (invalid)",
 473                 /* 6 */ "Block Device",
 474                 /* 7 */ "7 (invalid)",
 475                 /* 8 */ "Regular File",
 476                 /* 9 */ "9 (invalid)",
 477                 /* 10 */ "Symbolic Link",
 478                 /* 11 */ "11 (invalid)",
 479                 /* 12 */ "Socket",
 480                 /* 13 */ "Door",
 481                 /* 14 */ "Event Port",
 482                 /* 15 */ "15 (invalid)",
 483         };
 484
 485         dump_zap_stats(os, object);
 486         (void) printf("\n");
 487
 488         for (zap_cursor_init(&zc, os, object);
 489             zap_cursor_retrieve(&zc, &attr) == 0;
 490             zap_cursor_advance(&zc)) {
 491                 (void) printf("\t\t%s = %lld (type: %s)\n",
 492                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 493                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 494         }
 495         zap_cursor_fini(&zc);
 496 }
 497
 498 static void
 499 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 500 {
 501         uint64_t alloc, offset, entry;
 502         uint8_t mapshift = sm->sm_shift;
 503         uint64_t mapstart = sm->sm_start;
 504         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 505                             "INVALID", "INVALID", "INVALID", "INVALID" };
 506
 507         if (smo->smo_object == 0)
 508                 return;
 509
 510         /*
 511          * Print out the freelist entries in both encoded and decoded form.
 512          */
 513         alloc = 0;
 514         for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 515                 VERIFY3U(0, ==, dmu_read(os, smo->smo_object, offset,
 516                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 517                 if (SM_DEBUG_DECODE(entry)) {
 518                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 519                             (u_longlong_t)(offset / sizeof (entry)),
 520                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 521                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 522                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 523                 } else {
 524                         (void) printf("\t    [%6llu]    %c  range:"
 525                             " %010llx-%010llx  size: %06llx\n",
 526                             (u_longlong_t)(offset / sizeof (entry)),
 527                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 528                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 529                             mapshift) + mapstart),
 530                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 531                             mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
 532                             mapshift)),
 533                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 534                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 535                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 536                         else
 537                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 538                 }
 539         }
 540         if (alloc != smo->smo_alloc) {
 541                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 542                     "with space map summary (%llu)\n",
 543                     (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
 544         }
 545 }
 546
 547 static void
 548 dump_metaslab_stats(metaslab_t *msp)
 549 {
 550         char maxbuf[32];
 551         space_map_t *sm = msp->ms_map;
 552         avl_tree_t *t = sm->sm_pp_root;
 553         int free_pct = sm->sm_space * 100 / sm->sm_size;
 554
 555         zdb_nicenum(space_map_maxsize(sm), maxbuf);
 556
 557         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 558             "segments", avl_numnodes(t), "maxsize", maxbuf,
 559             "freepct", free_pct);
 560 }
 561
 562 static void
 563 dump_metaslab(metaslab_t *msp)
 564 {
 565         vdev_t *vd = msp->ms_group->mg_vd;
 566         spa_t *spa = vd->vdev_spa;
 567         space_map_t *sm = msp->ms_map;
 568         space_map_obj_t *smo = &msp->ms_smo;
 569         char freebuf[32];
 570
 571         zdb_nicenum(sm->sm_size - smo->smo_alloc, freebuf);
 572
 573         (void) printf(
 574             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 575             (u_longlong_t)(sm->sm_start / sm->sm_size),
 576             (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
 577
 578         if (dump_opt['m'] > 1 && !dump_opt['L']) {
 579                 mutex_enter(&msp->ms_lock);
 580                 space_map_load_wait(sm);
 581                 if (!sm->sm_loaded)
 582                         VERIFY(space_map_load(sm, zfs_metaslab_ops,
 583                             SM_FREE, smo, spa->spa_meta_objset) == 0);
 584                 dump_metaslab_stats(msp);
 585                 space_map_unload(sm);
 586                 mutex_exit(&msp->ms_lock);
 587         }
 588
 589         if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
 590                 ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
 591
 592                 mutex_enter(&msp->ms_lock);
 593                 dump_spacemap(spa->spa_meta_objset, smo, sm);
 594                 mutex_exit(&msp->ms_lock);
 595         }
 596 }
 597
 598 static void
 599 print_vdev_metaslab_header(vdev_t *vd)
 600 {
 601         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 602             (u_longlong_t)vd->vdev_id,
 603             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 604             "offset", "spacemap", "free");
 605         (void) printf("\t%15s   %19s   %15s   %10s\n",
 606             "---------------", "-------------------",
 607             "---------------", "-------------");
 608 }
 609
 610 static void
 611 dump_metaslabs(spa_t *spa)
 612 {
 613         vdev_t *vd, *rvd = spa->spa_root_vdev;
 614         uint64_t m, c = 0, children = rvd->vdev_children;
 615
 616         (void) printf("\nMetaslabs:\n");
 617
 618         if (!dump_opt['d'] && zopt_objects > 0) {
 619                 c = zopt_object[0];
 620
 621                 if (c >= children)
 622                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 623
 624                 if (zopt_objects > 1) {
 625                         vd = rvd->vdev_child[c];
 626                         print_vdev_metaslab_header(vd);
 627
 628                         for (m = 1; m < zopt_objects; m++) {
 629                                 if (zopt_object[m] < vd->vdev_ms_count)
 630                                         dump_metaslab(
 631                                             vd->vdev_ms[zopt_object[m]]);
 632                                 else
 633                                         (void) fprintf(stderr, "bad metaslab "
 634                                             "number %llu\n",
 635                                             (u_longlong_t)zopt_object[m]);
 636                         }
 637                         (void) printf("\n");
 638                         return;
 639                 }
 640                 children = c + 1;
 641         }
 642         for (; c < children; c++) {
 643                 vd = rvd->vdev_child[c];
 644                 print_vdev_metaslab_header(vd);
 645
 646                 for (m = 0; m < vd->vdev_ms_count; m++)
 647                         dump_metaslab(vd->vdev_ms[m]);
 648                 (void) printf("\n");
 649         }
 650 }
 651
 652 static void
 653 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 654 {
 655         const ddt_phys_t *ddp = dde->dde_phys;
 656         const ddt_key_t *ddk = &dde->dde_key;
 657         char *types[4] = { "ditto", "single", "double", "triple" };
 658         char blkbuf[BP_SPRINTF_LEN];
 659         blkptr_t blk;
 660         int p;
 661
 662         for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 663                 if (ddp->ddp_phys_birth == 0)
 664                         continue;
 665                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 666                 sprintf_blkptr(blkbuf, &blk);
 667                 (void) printf("index %llx refcnt %llu %s %s\n",
 668                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 669                     types[p], blkbuf);
 670         }
 671 }
 672
 673 static void
 674 dump_dedup_ratio(const ddt_stat_t *dds)
 675 {
 676         double rL, rP, rD, D, dedup, compress, copies;
 677
 678         if (dds->dds_blocks == 0)
 679                 return;
 680
 681         rL = (double)dds->dds_ref_lsize;
 682         rP = (double)dds->dds_ref_psize;
 683         rD = (double)dds->dds_ref_dsize;
 684         D = (double)dds->dds_dsize;
 685
 686         dedup = rD / D;
 687         compress = rL / rP;
 688         copies = rD / rP;
 689
 690         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 691             "dedup * compress / copies = %.2f\n\n",
 692             dedup, compress, copies, dedup * compress / copies);
 693 }
 694
 695 static void
 696 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 697 {
 698         char name[DDT_NAMELEN];
 699         ddt_entry_t dde;
 700         uint64_t walk = 0;
 701         dmu_object_info_t doi;
 702         uint64_t count, dspace, mspace;
 703         int error;
 704
 705         error = ddt_object_info(ddt, type, class, &doi);
 706
 707         if (error == ENOENT)
 708                 return;
 709         ASSERT(error == 0);
 710
 711         error = ddt_object_count(ddt, type, class, &count);
 712         ASSERT(error == 0);
 713         if (count == 0)
 714                 return;
 715
 716         dspace = doi.doi_physical_blocks_512 << 9;
 717         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 718
 719         ddt_object_name(ddt, type, class, name);
 720
 721         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 722             name,
 723             (u_longlong_t)count,
 724             (u_longlong_t)(dspace / count),
 725             (u_longlong_t)(mspace / count));
 726
 727         if (dump_opt['D'] < 3)
 728                 return;
 729
 730         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 731
 732         if (dump_opt['D'] < 4)
 733                 return;
 734
 735         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 736                 return;
 737
 738         (void) printf("%s contents:\n\n", name);
 739
 740         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 741                 dump_dde(ddt, &dde, walk);
 742
 743         ASSERT(error == ENOENT);
 744
 745         (void) printf("\n");
 746 }
 747
 748 static void
 749 dump_all_ddts(spa_t *spa)
 750 {
 751         ddt_histogram_t ddh_total;
 752         ddt_stat_t dds_total;
 753         enum zio_checksum c;
 754         enum ddt_type type;
 755         enum ddt_class class;
 756
 757         bzero(&ddh_total, sizeof (ddt_histogram_t));
 758         bzero(&dds_total, sizeof (ddt_stat_t));
 759
 760         for (c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 761                 ddt_t *ddt = spa->spa_ddt[c];
 762                 for (type = 0; type < DDT_TYPES; type++) {
 763                         for (class = 0; class < DDT_CLASSES;
 764                             class++) {
 765                                 dump_ddt(ddt, type, class);
 766                         }
 767                 }
 768         }
 769
 770         ddt_get_dedup_stats(spa, &dds_total);
 771
 772         if (dds_total.dds_blocks == 0) {
 773                 (void) printf("All DDTs are empty\n");
 774                 return;
 775         }
 776
 777         (void) printf("\n");
 778
 779         if (dump_opt['D'] > 1) {
 780                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
 781                 ddt_get_dedup_histogram(spa, &ddh_total);
 782                 zpool_dump_ddt(&dds_total, &ddh_total);
 783         }
 784
 785         dump_dedup_ratio(&dds_total);
 786 }
 787
 788 static void
 789 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 790 {
 791         char *prefix = (void *)sm;
 792
 793         (void) printf("%s [%llu,%llu) length %llu\n",
 794             prefix,
 795             (u_longlong_t)start,
 796             (u_longlong_t)(start + size),
 797             (u_longlong_t)(size));
 798 }
 799
 800 static void
 801 dump_dtl(vdev_t *vd, int indent)
 802 {
 803         spa_t *spa = vd->vdev_spa;
 804         boolean_t required;
 805         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 806         char prefix[256];
 807         int c, t;
 808
 809         spa_vdev_state_enter(spa, SCL_NONE);
 810         required = vdev_dtl_required(vd);
 811         (void) spa_vdev_state_exit(spa, NULL, 0);
 812
 813         if (indent == 0)
 814                 (void) printf("\nDirty time logs:\n\n");
 815
 816         (void) printf("\t%*s%s [%s]\n", indent, "",
 817             vd->vdev_path ? vd->vdev_path :
 818             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 819             required ? "DTL-required" : "DTL-expendable");
 820
 821         for (t = 0; t < DTL_TYPES; t++) {
 822                 space_map_t *sm = &vd->vdev_dtl[t];
 823                 if (sm->sm_space == 0)
 824                         continue;
 825                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 826                     indent + 2, "", name[t]);
 827                 mutex_enter(sm->sm_lock);
 828                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 829                 mutex_exit(sm->sm_lock);
 830                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 831                         dump_spacemap(spa->spa_meta_objset,
 832                             &vd->vdev_dtl_smo, sm);
 833         }
 834
 835         for (c = 0; c < vd->vdev_children; c++)
 836                 dump_dtl(vd->vdev_child[c], indent + 4);
 837 }
 838
 839 static void
 840 dump_history(spa_t *spa)
 841 {
 842         nvlist_t **events = NULL;
 843         char buf[SPA_MAXBLOCKSIZE];
 844         uint64_t resid, len, off = 0;
 845         uint_t num = 0;
 846         int error;
 847         time_t tsec;
 848         struct tm t;
 849         char tbuf[30];
 850         char internalstr[MAXPATHLEN];
 851         int i;
 852
 853         do {
 854                 len = sizeof (buf);
 855
 856                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
 857                         (void) fprintf(stderr, "Unable to read history: "
 858                             "error %d\n", error);
 859                         return;
 860                 }
 861
 862                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
 863                         break;
 864
 865                 off -= resid;
 866         } while (len != 0);
 867
 868         (void) printf("\nHistory:\n");
 869         for (i = 0; i < num; i++) {
 870                 uint64_t time, txg, ievent;
 871                 char *cmd, *intstr;
 872
 873                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 874                     &time) != 0)
 875                         continue;
 876                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 877                     &cmd) != 0) {
 878                         if (nvlist_lookup_uint64(events[i],
 879                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
 880                                 continue;
 881                         verify(nvlist_lookup_uint64(events[i],
 882                             ZPOOL_HIST_TXG, &txg) == 0);
 883                         verify(nvlist_lookup_string(events[i],
 884                             ZPOOL_HIST_INT_STR, &intstr) == 0);
 885                         if (ievent >= LOG_END)
 886                                 continue;
 887
 888                         (void) snprintf(internalstr,
 889                             sizeof (internalstr),
 890                             "[internal %s txg:%lld] %s",
 891                             zfs_history_event_names[ievent],
 892                             (longlong_t)txg, intstr);
 893                         cmd = internalstr;
 894                 }
 895                 tsec = time;
 896                 (void) localtime_r(&tsec, &t);
 897                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
 898                 (void) printf("%s %s\n", tbuf, cmd);
 899         }
 900 }
 901
 902 /*ARGSUSED*/
 903 static void
 904 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 905 {
 906 }
 907
 908 static uint64_t
 909 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
 910 {
 911         if (dnp == NULL) {
 912                 ASSERT(zb->zb_level < 0);
 913                 if (zb->zb_object == 0)
 914                         return (zb->zb_blkid);
 915                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
 916         }
 917
 918         ASSERT(zb->zb_level >= 0);
 919
 920         return ((zb->zb_blkid <<
 921             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 922             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 923 }
 924
 925 static void
 926 sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
 927 {
 928         const dva_t *dva = bp->blk_dva;
 929         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
 930         int i;
 931
 932         if (dump_opt['b'] >= 5) {
 933                 sprintf_blkptr(blkbuf, bp);
 934                 return;
 935         }
 936
 937         blkbuf[0] = '\0';
 938
 939         for (i = 0; i < ndvas; i++)
 940                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 941                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 942                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 943                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 944
 945         (void) sprintf(blkbuf + strlen(blkbuf),
 946             "%llxL/%llxP F=%llu B=%llu/%llu",
 947             (u_longlong_t)BP_GET_LSIZE(bp),
 948             (u_longlong_t)BP_GET_PSIZE(bp),
 949             (u_longlong_t)bp->blk_fill,
 950             (u_longlong_t)bp->blk_birth,
 951             (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
 952 }
 953
 954 static void
 955 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 956     const dnode_phys_t *dnp)
 957 {
 958         char blkbuf[BP_SPRINTF_LEN];
 959         int l;
 960
 961         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 962         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 963
 964         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
 965
 966         ASSERT(zb->zb_level >= 0);
 967
 968         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 969                 if (l == zb->zb_level) {
 970                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 971                 } else {
 972                         (void) printf(" ");
 973                 }
 974         }
 975
 976         sprintf_blkptr_compact(blkbuf, bp);
 977         (void) printf("%s\n", blkbuf);
 978 }
 979
 980 static int
 981 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 982     blkptr_t *bp, const zbookmark_t *zb)
 983 {
 984         int err = 0;
 985
 986         if (bp->blk_birth == 0)
 987                 return (0);
 988
 989         print_indirect(bp, zb, dnp);
 990
 991         if (BP_GET_LEVEL(bp) > 0) {
 992                 uint32_t flags = ARC_WAIT;
 993                 int i;
 994                 blkptr_t *cbp;
 995                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
 996                 arc_buf_t *buf;
 997                 uint64_t fill = 0;
 998
 999                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1000                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1001                 if (err)
1002                         return (err);
1003                 ASSERT(buf->b_data);
1004
1005                 /* recursively visit blocks below this */
1006                 cbp = buf->b_data;
1007                 for (i = 0; i < epb; i++, cbp++) {
1008                         zbookmark_t czb;
1009
1010                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1011                             zb->zb_level - 1,
1012                             zb->zb_blkid * epb + i);
1013                         err = visit_indirect(spa, dnp, cbp, &czb);
1014                         if (err)
1015                                 break;
1016                         fill += cbp->blk_fill;
1017                 }
1018                 if (!err)
1019                         ASSERT3U(fill, ==, bp->blk_fill);
1020                 (void) arc_buf_remove_ref(buf, &buf);
1021         }
1022
1023         return (err);
1024 }
1025
1026 /*ARGSUSED*/
1027 static void
1028 dump_indirect(dnode_t *dn)
1029 {
1030         dnode_phys_t *dnp = dn->dn_phys;
1031         int j;
1032         zbookmark_t czb;
1033
1034         (void) printf("Indirect blocks:\n");
1035
1036         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1037             dn->dn_object, dnp->dn_nlevels - 1, 0);
1038         for (j = 0; j < dnp->dn_nblkptr; j++) {
1039                 czb.zb_blkid = j;
1040                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1041                     &dnp->dn_blkptr[j], &czb);
1042         }
1043
1044         (void) printf("\n");
1045 }
1046
1047 /*ARGSUSED*/
1048 static void
1049 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1050 {
1051         dsl_dir_phys_t *dd = data;
1052         time_t crtime;
1053         char nice[32];
1054
1055         if (dd == NULL)
1056                 return;
1057
1058         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1059
1060         crtime = dd->dd_creation_time;
1061         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1062         (void) printf("\t\thead_dataset_obj = %llu\n",
1063             (u_longlong_t)dd->dd_head_dataset_obj);
1064         (void) printf("\t\tparent_dir_obj = %llu\n",
1065             (u_longlong_t)dd->dd_parent_obj);
1066         (void) printf("\t\torigin_obj = %llu\n",
1067             (u_longlong_t)dd->dd_origin_obj);
1068         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1069             (u_longlong_t)dd->dd_child_dir_zapobj);
1070         zdb_nicenum(dd->dd_used_bytes, nice);
1071         (void) printf("\t\tused_bytes = %s\n", nice);
1072         zdb_nicenum(dd->dd_compressed_bytes, nice);
1073         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1074         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1075         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1076         zdb_nicenum(dd->dd_quota, nice);
1077         (void) printf("\t\tquota = %s\n", nice);
1078         zdb_nicenum(dd->dd_reserved, nice);
1079         (void) printf("\t\treserved = %s\n", nice);
1080         (void) printf("\t\tprops_zapobj = %llu\n",
1081             (u_longlong_t)dd->dd_props_zapobj);
1082         (void) printf("\t\tdeleg_zapobj = %llu\n",
1083             (u_longlong_t)dd->dd_deleg_zapobj);
1084         (void) printf("\t\tflags = %llx\n",
1085             (u_longlong_t)dd->dd_flags);
1086
1087 #define DO(which) \
1088         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1089         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1090         DO(HEAD);
1091         DO(SNAP);
1092         DO(CHILD);
1093         DO(CHILD_RSRV);
1094         DO(REFRSRV);
1095 #undef DO
1096 }
1097
1098 /*ARGSUSED*/
1099 static void
1100 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1101 {
1102         dsl_dataset_phys_t *ds = data;
1103         time_t crtime;
1104         char used[32], compressed[32], uncompressed[32], unique[32];
1105         char blkbuf[BP_SPRINTF_LEN];
1106
1107         if (ds == NULL)
1108                 return;
1109
1110         ASSERT(size == sizeof (*ds));
1111         crtime = ds->ds_creation_time;
1112         zdb_nicenum(ds->ds_referenced_bytes, used);
1113         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1114         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1115         zdb_nicenum(ds->ds_unique_bytes, unique);
1116         sprintf_blkptr(blkbuf, &ds->ds_bp);
1117
1118         (void) printf("\t\tdir_obj = %llu\n",
1119             (u_longlong_t)ds->ds_dir_obj);
1120         (void) printf("\t\tprev_snap_obj = %llu\n",
1121             (u_longlong_t)ds->ds_prev_snap_obj);
1122         (void) printf("\t\tprev_snap_txg = %llu\n",
1123             (u_longlong_t)ds->ds_prev_snap_txg);
1124         (void) printf("\t\tnext_snap_obj = %llu\n",
1125             (u_longlong_t)ds->ds_next_snap_obj);
1126         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1127             (u_longlong_t)ds->ds_snapnames_zapobj);
1128         (void) printf("\t\tnum_children = %llu\n",
1129             (u_longlong_t)ds->ds_num_children);
1130         (void) printf("\t\tuserrefs_obj = %llu\n",
1131             (u_longlong_t)ds->ds_userrefs_obj);
1132         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1133         (void) printf("\t\tcreation_txg = %llu\n",
1134             (u_longlong_t)ds->ds_creation_txg);
1135         (void) printf("\t\tdeadlist_obj = %llu\n",
1136             (u_longlong_t)ds->ds_deadlist_obj);
1137         (void) printf("\t\tused_bytes = %s\n", used);
1138         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1139         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1140         (void) printf("\t\tunique = %s\n", unique);
1141         (void) printf("\t\tfsid_guid = %llu\n",
1142             (u_longlong_t)ds->ds_fsid_guid);
1143         (void) printf("\t\tguid = %llu\n",
1144             (u_longlong_t)ds->ds_guid);
1145         (void) printf("\t\tflags = %llx\n",
1146             (u_longlong_t)ds->ds_flags);
1147         (void) printf("\t\tnext_clones_obj = %llu\n",
1148             (u_longlong_t)ds->ds_next_clones_obj);
1149         (void) printf("\t\tprops_obj = %llu\n",
1150             (u_longlong_t)ds->ds_props_obj);
1151         (void) printf("\t\tbp = %s\n", blkbuf);
1152 }
1153
1154 /* ARGSUSED */
1155 static int
1156 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1157 {
1158         char blkbuf[BP_SPRINTF_LEN];
1159
1160         if (bp->blk_birth != 0) {
1161                 sprintf_blkptr(blkbuf, bp);
1162                 (void) printf("\t%s\n", blkbuf);
1163         }
1164         return (0);
1165 }
1166
1167 static void
1168 dump_bptree(objset_t *os, uint64_t obj, char *name)
1169 {
1170         char bytes[32];
1171         bptree_phys_t *bt;
1172         dmu_buf_t *db;
1173
1174         if (dump_opt['d'] < 3)
1175                 return;
1176
1177         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1178         bt = db->db_data;
1179         zdb_nicenum(bt->bt_bytes, bytes);
1180         (void) printf("\n    %s: %llu datasets, %s\n",
1181             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1182         dmu_buf_rele(db, FTAG);
1183
1184         if (dump_opt['d'] < 5)
1185                 return;
1186
1187         (void) printf("\n");
1188
1189         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1190 }
1191
1192 /* ARGSUSED */
1193 static int
1194 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1195 {
1196         char blkbuf[BP_SPRINTF_LEN];
1197
1198         ASSERT(bp->blk_birth != 0);
1199         sprintf_blkptr_compact(blkbuf, bp);
1200         (void) printf("\t%s\n", blkbuf);
1201         return (0);
1202 }
1203
1204 static void
1205 dump_bpobj(bpobj_t *bpo, char *name)
1206 {
1207         char bytes[32];
1208         char comp[32];
1209         char uncomp[32];
1210
1211         if (dump_opt['d'] < 3)
1212                 return;
1213
1214         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1215         if (bpo->bpo_havesubobj) {
1216                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1217                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1218                 (void) printf("\n    %s: %llu local blkptrs, %llu subobjs, "
1219                     "%s (%s/%s comp)\n",
1220                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1221                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1222                     bytes, comp, uncomp);
1223         } else {
1224                 (void) printf("\n    %s: %llu blkptrs, %s\n",
1225                     name, (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, bytes);
1226         }
1227
1228         if (dump_opt['d'] < 5)
1229                 return;
1230
1231         (void) printf("\n");
1232
1233         (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1234 }
1235
1236 static void
1237 dump_deadlist(dsl_deadlist_t *dl)
1238 {
1239         dsl_deadlist_entry_t *dle;
1240         char bytes[32];
1241         char comp[32];
1242         char uncomp[32];
1243
1244         if (dump_opt['d'] < 3)
1245                 return;
1246
1247         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1248         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1249         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1250         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1251             bytes, comp, uncomp);
1252
1253         if (dump_opt['d'] < 4)
1254                 return;
1255
1256         (void) printf("\n");
1257
1258         for (dle = avl_first(&dl->dl_tree); dle;
1259             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1260                 (void) printf("      mintxg %llu -> obj %llu\n",
1261                     (longlong_t)dle->dle_mintxg,
1262                     (longlong_t)dle->dle_bpobj.bpo_object);
1263
1264                 if (dump_opt['d'] >= 5)
1265                         dump_bpobj(&dle->dle_bpobj, "");
1266         }
1267 }
1268
1269 static avl_tree_t idx_tree;
1270 static avl_tree_t domain_tree;
1271 static boolean_t fuid_table_loaded;
1272 static boolean_t sa_loaded;
1273 sa_attr_type_t *sa_attr_table;
1274
1275 static void
1276 fuid_table_destroy(void)
1277 {
1278         if (fuid_table_loaded) {
1279                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1280                 fuid_table_loaded = B_FALSE;
1281         }
1282 }
1283
1284 /*
1285  * print uid or gid information.
1286  * For normal POSIX id just the id is printed in decimal format.
1287  * For CIFS files with FUID the fuid is printed in hex followed by
1288  * the doman-rid string.
1289  */
1290 static void
1291 print_idstr(uint64_t id, const char *id_type)
1292 {
1293         if (FUID_INDEX(id)) {
1294                 char *domain;
1295
1296                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1297                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1298                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1299         } else {
1300                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1301         }
1302
1303 }
1304
1305 static void
1306 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1307 {
1308         uint32_t uid_idx, gid_idx;
1309
1310         uid_idx = FUID_INDEX(uid);
1311         gid_idx = FUID_INDEX(gid);
1312
1313         /* Load domain table, if not already loaded */
1314         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1315                 uint64_t fuid_obj;
1316
1317                 /* first find the fuid object.  It lives in the master node */
1318                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1319                     8, 1, &fuid_obj) == 0);
1320                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1321                 (void) zfs_fuid_table_load(os, fuid_obj,
1322                     &idx_tree, &domain_tree);
1323                 fuid_table_loaded = B_TRUE;
1324         }
1325
1326         print_idstr(uid, "uid");
1327         print_idstr(gid, "gid");
1328 }
1329
1330 /*ARGSUSED*/
1331 static void
1332 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1333 {
1334         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1335         sa_handle_t *hdl;
1336         uint64_t xattr, rdev, gen;
1337         uint64_t uid, gid, mode, fsize, parent, links;
1338         uint64_t pflags;
1339         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1340         time_t z_crtime, z_atime, z_mtime, z_ctime;
1341         sa_bulk_attr_t bulk[12];
1342         int idx = 0;
1343         int error;
1344
1345         if (!sa_loaded) {
1346                 uint64_t sa_attrs = 0;
1347                 uint64_t version;
1348
1349                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1350                     8, 1, &version) == 0);
1351                 if (version >= ZPL_VERSION_SA) {
1352                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1353                             8, 1, &sa_attrs) == 0);
1354                 }
1355                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1356                     ZPL_END, &sa_attr_table)) != 0) {
1357                         (void) printf("sa_setup failed errno %d, can't "
1358                             "display znode contents\n", error);
1359                         return;
1360                 }
1361                 sa_loaded = B_TRUE;
1362         }
1363
1364         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1365                 (void) printf("Failed to get handle for SA znode\n");
1366                 return;
1367         }
1368
1369         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1370         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1371         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1372             &links, 8);
1373         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1374         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1375             &mode, 8);
1376         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1377             NULL, &parent, 8);
1378         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1379             &fsize, 8);
1380         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1381             acctm, 16);
1382         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1383             modtm, 16);
1384         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1385             crtm, 16);
1386         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1387             chgtm, 16);
1388         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1389             &pflags, 8);
1390
1391         if (sa_bulk_lookup(hdl, bulk, idx)) {
1392                 (void) sa_handle_destroy(hdl);
1393                 return;
1394         }
1395
1396         error = zfs_obj_to_path(os, object, path, sizeof (path));
1397         if (error != 0) {
1398                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1399                     (u_longlong_t)object);
1400         }
1401         if (dump_opt['d'] < 3) {
1402                 (void) printf("\t%s\n", path);
1403                 (void) sa_handle_destroy(hdl);
1404                 return;
1405         }
1406
1407         z_crtime = (time_t)crtm[0];
1408         z_atime = (time_t)acctm[0];
1409         z_mtime = (time_t)modtm[0];
1410         z_ctime = (time_t)chgtm[0];
1411
1412         (void) printf("\tpath   %s\n", path);
1413         dump_uidgid(os, uid, gid);
1414         (void) printf("\tatime  %s", ctime(&z_atime));
1415         (void) printf("\tmtime  %s", ctime(&z_mtime));
1416         (void) printf("\tctime  %s", ctime(&z_ctime));
1417         (void) printf("\tcrtime %s", ctime(&z_crtime));
1418         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1419         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1420         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1421         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1422         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1423         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1424         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1425             sizeof (uint64_t)) == 0)
1426                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1427         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1428             sizeof (uint64_t)) == 0)
1429                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1430         sa_handle_destroy(hdl);
1431 }
1432
1433 /*ARGSUSED*/
1434 static void
1435 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1436 {
1437 }
1438
1439 /*ARGSUSED*/
1440 static void
1441 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1442 {
1443 }
1444
1445 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1446         dump_none,              /* unallocated                  */
1447         dump_zap,               /* object directory             */
1448         dump_uint64,            /* object array                 */
1449         dump_none,              /* packed nvlist                */
1450         dump_packed_nvlist,     /* packed nvlist size           */
1451         dump_none,              /* bplist                       */
1452         dump_none,              /* bplist header                */
1453         dump_none,              /* SPA space map header         */
1454         dump_none,              /* SPA space map                */
1455         dump_none,              /* ZIL intent log               */
1456         dump_dnode,             /* DMU dnode                    */
1457         dump_dmu_objset,        /* DMU objset                   */
1458         dump_dsl_dir,           /* DSL directory                */
1459         dump_zap,               /* DSL directory child map      */
1460         dump_zap,               /* DSL dataset snap map         */
1461         dump_zap,               /* DSL props                    */
1462         dump_dsl_dataset,       /* DSL dataset                  */
1463         dump_znode,             /* ZFS znode                    */
1464         dump_acl,               /* ZFS V0 ACL                   */
1465         dump_uint8,             /* ZFS plain file               */
1466         dump_zpldir,            /* ZFS directory                */
1467         dump_zap,               /* ZFS master node              */
1468         dump_zap,               /* ZFS delete queue             */
1469         dump_uint8,             /* zvol object                  */
1470         dump_zap,               /* zvol prop                    */
1471         dump_uint8,             /* other uint8[]                */
1472         dump_uint64,            /* other uint64[]               */
1473         dump_zap,               /* other ZAP                    */
1474         dump_zap,               /* persistent error log         */
1475         dump_uint8,             /* SPA history                  */
1476         dump_uint64,            /* SPA history offsets          */
1477         dump_zap,               /* Pool properties              */
1478         dump_zap,               /* DSL permissions              */
1479         dump_acl,               /* ZFS ACL                      */
1480         dump_uint8,             /* ZFS SYSACL                   */
1481         dump_none,              /* FUID nvlist                  */
1482         dump_packed_nvlist,     /* FUID nvlist size             */
1483         dump_zap,               /* DSL dataset next clones      */
1484         dump_zap,               /* DSL scrub queue              */
1485         dump_zap,               /* ZFS user/group used          */
1486         dump_zap,               /* ZFS user/group quota         */
1487         dump_zap,               /* snapshot refcount tags       */
1488         dump_ddt_zap,           /* DDT ZAP object               */
1489         dump_zap,               /* DDT statistics               */
1490         dump_znode,             /* SA object                    */
1491         dump_zap,               /* SA Master Node               */
1492         dump_sa_attrs,          /* SA attribute registration    */
1493         dump_sa_layouts,        /* SA attribute layouts         */
1494         dump_zap,               /* DSL scrub translations       */
1495         dump_none,              /* fake dedup BP                */
1496         dump_zap,               /* deadlist                     */
1497         dump_none,              /* deadlist hdr                 */
1498         dump_zap,               /* dsl clones                   */
1499         dump_none,              /* bpobj subobjs                */
1500         dump_unknown,           /* Unknown type, must be last   */
1501 };
1502
1503 static void
1504 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1505 {
1506         dmu_buf_t *db = NULL;
1507         dmu_object_info_t doi;
1508         dnode_t *dn;
1509         void *bonus = NULL;
1510         size_t bsize = 0;
1511         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1512         char bonus_size[32];
1513         char aux[50];
1514         int error;
1515
1516         if (*print_header) {
1517                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1518                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1519                     "%full", "type");
1520                 *print_header = 0;
1521         }
1522
1523         if (object == 0) {
1524                 dn = DMU_META_DNODE(os);
1525         } else {
1526                 error = dmu_bonus_hold(os, object, FTAG, &db);
1527                 if (error)
1528                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1529                             object, error);
1530                 bonus = db->db_data;
1531                 bsize = db->db_size;
1532                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1533         }
1534         dmu_object_info_from_dnode(dn, &doi);
1535
1536         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1537         zdb_nicenum(doi.doi_data_block_size, dblk);
1538         zdb_nicenum(doi.doi_max_offset, lsize);
1539         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1540         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1541         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1542             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1543             doi.doi_max_offset);
1544
1545         aux[0] = '\0';
1546
1547         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1548                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1549                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1550         }
1551
1552         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1553                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1554                     ZDB_COMPRESS_NAME(doi.doi_compress));
1555         }
1556
1557         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1558             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1559             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1560
1561         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1562                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1563                     "", "", "", "", "", bonus_size, "bonus",
1564                     ZDB_OT_NAME(doi.doi_bonus_type));
1565         }
1566
1567         if (verbosity >= 4) {
1568                 (void) printf("\tdnode flags: %s%s%s\n",
1569                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1570                     "USED_BYTES " : "",
1571                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1572                     "USERUSED_ACCOUNTED " : "",
1573                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1574                     "SPILL_BLKPTR" : "");
1575                 (void) printf("\tdnode maxblkid: %llu\n",
1576                     (longlong_t)dn->dn_phys->dn_maxblkid);
1577
1578                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1579                     bonus, bsize);
1580                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1581                 *print_header = 1;
1582         }
1583
1584         if (verbosity >= 5)
1585                 dump_indirect(dn);
1586
1587         if (verbosity >= 5) {
1588                 /*
1589                  * Report the list of segments that comprise the object.
1590                  */
1591                 uint64_t start = 0;
1592                 uint64_t end;
1593                 uint64_t blkfill = 1;
1594                 int minlvl = 1;
1595
1596                 if (dn->dn_type == DMU_OT_DNODE) {
1597                         minlvl = 0;
1598                         blkfill = DNODES_PER_BLOCK;
1599                 }
1600
1601                 for (;;) {
1602                         char segsize[32];
1603                         error = dnode_next_offset(dn,
1604                             0, &start, minlvl, blkfill, 0);
1605                         if (error)
1606                                 break;
1607                         end = start;
1608                         error = dnode_next_offset(dn,
1609                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1610                         zdb_nicenum(end - start, segsize);
1611                         (void) printf("\t\tsegment [%016llx, %016llx)"
1612                             " size %5s\n", (u_longlong_t)start,
1613                             (u_longlong_t)end, segsize);
1614                         if (error)
1615                                 break;
1616                         start = end;
1617                 }
1618         }
1619
1620         if (db != NULL)
1621                 dmu_buf_rele(db, FTAG);
1622 }
1623
1624 static char *objset_types[DMU_OST_NUMTYPES] = {
1625         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1626
1627 static void
1628 dump_dir(objset_t *os)
1629 {
1630         dmu_objset_stats_t dds;
1631         uint64_t object, object_count;
1632         uint64_t refdbytes, usedobjs, scratch;
1633         char numbuf[32];
1634         char blkbuf[BP_SPRINTF_LEN + 20];
1635         char osname[MAXNAMELEN];
1636         char *type = "UNKNOWN";
1637         int verbosity = dump_opt['d'];
1638         int print_header = 1;
1639         int i, error;
1640
1641         dmu_objset_fast_stat(os, &dds);
1642
1643         if (dds.dds_type < DMU_OST_NUMTYPES)
1644                 type = objset_types[dds.dds_type];
1645
1646         if (dds.dds_type == DMU_OST_META) {
1647                 dds.dds_creation_txg = TXG_INITIAL;
1648                 usedobjs = os->os_rootbp->blk_fill;
1649                 refdbytes = os->os_spa->spa_dsl_pool->
1650                     dp_mos_dir->dd_phys->dd_used_bytes;
1651         } else {
1652                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1653         }
1654
1655         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1656
1657         zdb_nicenum(refdbytes, numbuf);
1658
1659         if (verbosity >= 4) {
1660                 (void) sprintf(blkbuf, ", rootbp ");
1661                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1662         } else {
1663                 blkbuf[0] = '\0';
1664         }
1665
1666         dmu_objset_name(os, osname);
1667
1668         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1669             "%s, %llu objects%s\n",
1670             osname, type, (u_longlong_t)dmu_objset_id(os),
1671             (u_longlong_t)dds.dds_creation_txg,
1672             numbuf, (u_longlong_t)usedobjs, blkbuf);
1673
1674         if (zopt_objects != 0) {
1675                 for (i = 0; i < zopt_objects; i++)
1676                         dump_object(os, zopt_object[i], verbosity,
1677                             &print_header);
1678                 (void) printf("\n");
1679                 return;
1680         }
1681
1682         if (dump_opt['i'] != 0 || verbosity >= 2)
1683                 dump_intent_log(dmu_objset_zil(os));
1684
1685         if (dmu_objset_ds(os) != NULL)
1686                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1687
1688         if (verbosity < 2)
1689                 return;
1690
1691         if (os->os_rootbp->blk_birth == 0)
1692                 return;
1693
1694         dump_object(os, 0, verbosity, &print_header);
1695         object_count = 0;
1696         if (DMU_USERUSED_DNODE(os) != NULL &&
1697             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1698                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1699                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1700         }
1701
1702         object = 0;
1703         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1704                 dump_object(os, object, verbosity, &print_header);
1705                 object_count++;
1706         }
1707
1708         ASSERT3U(object_count, ==, usedobjs);
1709
1710         (void) printf("\n");
1711
1712         if (error != ESRCH) {
1713                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1714                 abort();
1715         }
1716 }
1717
1718 static void
1719 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1720 {
1721         time_t timestamp = ub->ub_timestamp;
1722
1723         (void) printf("%s", header ? header : "");
1724         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1725         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1726         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1727         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1728         (void) printf("\ttimestamp = %llu UTC = %s",
1729             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1730         if (dump_opt['u'] >= 3) {
1731                 char blkbuf[BP_SPRINTF_LEN];
1732                 sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1733                 (void) printf("\trootbp = %s\n", blkbuf);
1734         }
1735         (void) printf("%s", footer ? footer : "");
1736 }
1737
1738 static void
1739 dump_config(spa_t *spa)
1740 {
1741         dmu_buf_t *db;
1742         size_t nvsize = 0;
1743         int error = 0;
1744
1745
1746         error = dmu_bonus_hold(spa->spa_meta_objset,
1747             spa->spa_config_object, FTAG, &db);
1748
1749         if (error == 0) {
1750                 nvsize = *(uint64_t *)db->db_data;
1751                 dmu_buf_rele(db, FTAG);
1752
1753                 (void) printf("\nMOS Configuration:\n");
1754                 dump_packed_nvlist(spa->spa_meta_objset,
1755                     spa->spa_config_object, (void *)&nvsize, 1);
1756         } else {
1757                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1758                     (u_longlong_t)spa->spa_config_object, error);
1759         }
1760 }
1761
1762 static void
1763 dump_cachefile(const char *cachefile)
1764 {
1765         int fd;
1766         struct stat64 statbuf;
1767         char *buf;
1768         nvlist_t *config;
1769
1770         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1771                 (void) printf("cannot open '%s': %s\n", cachefile,
1772                     strerror(errno));
1773                 exit(1);
1774         }
1775
1776         if (fstat64(fd, &statbuf) != 0) {
1777                 (void) printf("failed to stat '%s': %s\n", cachefile,
1778                     strerror(errno));
1779                 exit(1);
1780         }
1781
1782         if ((buf = malloc(statbuf.st_size)) == NULL) {
1783                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1784                     (u_longlong_t)statbuf.st_size);
1785                 exit(1);
1786         }
1787
1788         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1789                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1790                     (u_longlong_t)statbuf.st_size);
1791                 exit(1);
1792         }
1793
1794         (void) close(fd);
1795
1796         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1797                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1798                 exit(1);
1799         }
1800
1801         free(buf);
1802
1803         dump_nvlist(config, 0);
1804
1805         nvlist_free(config);
1806 }
1807
1808 #define ZDB_MAX_UB_HEADER_SIZE 32
1809
1810 static void
1811 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1812 {
1813         vdev_t vd;
1814         vdev_t *vdp = &vd;
1815         char header[ZDB_MAX_UB_HEADER_SIZE];
1816         int i;
1817
1818         vd.vdev_ashift = ashift;
1819         vdp->vdev_top = vdp;
1820
1821         for (i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1822                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1823                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1824
1825                 if (uberblock_verify(ub))
1826                         continue;
1827                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1828                     "Uberblock[%d]\n", i);
1829                 dump_uberblock(ub, header, "");
1830         }
1831 }
1832
1833 static void
1834 dump_label(const char *dev)
1835 {
1836         int fd;
1837         vdev_label_t label;
1838         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1839         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1840         struct stat64 statbuf;
1841         uint64_t psize, ashift;
1842         int len = strlen(dev) + 1;
1843         int l;
1844
1845         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1846                 len++;
1847                 path = malloc(len);
1848                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1849         } else {
1850                 path = strdup(dev);
1851         }
1852
1853         if ((fd = open64(path, O_RDONLY)) < 0) {
1854                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
1855                 free(path);
1856                 exit(1);
1857         }
1858
1859         if (fstat64_blk(fd, &statbuf) != 0) {
1860                 (void) printf("failed to stat '%s': %s\n", path,
1861                     strerror(errno));
1862                 free(path);
1863                 (void) close(fd);
1864                 exit(1);
1865         }
1866
1867         psize = statbuf.st_size;
1868         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1869
1870         for (l = 0; l < VDEV_LABELS; l++) {
1871                 nvlist_t *config = NULL;
1872
1873                 (void) printf("--------------------------------------------\n");
1874                 (void) printf("LABEL %d\n", l);
1875                 (void) printf("--------------------------------------------\n");
1876
1877                 if (pread64(fd, &label, sizeof (label),
1878                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1879                         (void) printf("failed to read label %d\n", l);
1880                         continue;
1881                 }
1882
1883                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1884                         (void) printf("failed to unpack label %d\n", l);
1885                         ashift = SPA_MINBLOCKSHIFT;
1886                 } else {
1887                         nvlist_t *vdev_tree = NULL;
1888
1889                         dump_nvlist(config, 4);
1890                         if ((nvlist_lookup_nvlist(config,
1891                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1892                             (nvlist_lookup_uint64(vdev_tree,
1893                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1894                                 ashift = SPA_MINBLOCKSHIFT;
1895                         nvlist_free(config);
1896                 }
1897                 if (dump_opt['u'])
1898                         dump_label_uberblocks(&label, ashift);
1899         }
1900
1901         free(path);
1902         (void) close(fd);
1903 }
1904
1905 /*ARGSUSED*/
1906 static int
1907 dump_one_dir(const char *dsname, void *arg)
1908 {
1909         int error;
1910         objset_t *os;
1911
1912         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1913         if (error) {
1914                 (void) printf("Could not open %s, error %d\n", dsname, error);
1915                 return (0);
1916         }
1917         dump_dir(os);
1918         dmu_objset_disown(os, FTAG);
1919         fuid_table_destroy();
1920         sa_loaded = B_FALSE;
1921         return (0);
1922 }
1923
1924 /*
1925  * Block statistics.
1926  */
1927 typedef struct zdb_blkstats {
1928         uint64_t        zb_asize;
1929         uint64_t        zb_lsize;
1930         uint64_t        zb_psize;
1931         uint64_t        zb_count;
1932 } zdb_blkstats_t;
1933
1934 /*
1935  * Extended object types to report deferred frees and dedup auto-ditto blocks.
1936  */
1937 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
1938 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
1939 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
1940 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
1941
1942 static char *zdb_ot_extname[] = {
1943         "deferred free",
1944         "dedup ditto",
1945         "other",
1946         "Total",
1947 };
1948
1949 #define ZB_TOTAL        DN_MAX_LEVELS
1950
1951 typedef struct zdb_cb {
1952         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
1953         uint64_t        zcb_dedup_asize;
1954         uint64_t        zcb_dedup_blocks;
1955         uint64_t        zcb_errors[256];
1956         int             zcb_readfails;
1957         int             zcb_haderrors;
1958         spa_t           *zcb_spa;
1959 } zdb_cb_t;
1960
1961 static void
1962 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
1963     dmu_object_type_t type)
1964 {
1965         uint64_t refcnt = 0;
1966         int i;
1967
1968         ASSERT(type < ZDB_OT_TOTAL);
1969
1970         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
1971                 return;
1972
1973         for (i = 0; i < 4; i++) {
1974                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1975                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
1976                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1977
1978                 zb->zb_asize += BP_GET_ASIZE(bp);
1979                 zb->zb_lsize += BP_GET_LSIZE(bp);
1980                 zb->zb_psize += BP_GET_PSIZE(bp);
1981                 zb->zb_count++;
1982         }
1983
1984         if (dump_opt['L'])
1985                 return;
1986
1987         if (BP_GET_DEDUP(bp)) {
1988                 ddt_t *ddt;
1989                 ddt_entry_t *dde;
1990
1991                 ddt = ddt_select(zcb->zcb_spa, bp);
1992                 ddt_enter(ddt);
1993                 dde = ddt_lookup(ddt, bp, B_FALSE);
1994
1995                 if (dde == NULL) {
1996                         refcnt = 0;
1997                 } else {
1998                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
1999                         ddt_phys_decref(ddp);
2000                         refcnt = ddp->ddp_refcnt;
2001                         if (ddt_phys_total_refcnt(dde) == 0)
2002                                 ddt_remove(ddt, dde);
2003                 }
2004                 ddt_exit(ddt);
2005         }
2006
2007         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2008             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2009             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2010 }
2011
2012 static void
2013 zdb_blkptr_done(zio_t *zio)
2014 {
2015         spa_t *spa = zio->io_spa;
2016         blkptr_t *bp = zio->io_bp;
2017         int ioerr = zio->io_error;
2018         zdb_cb_t *zcb = zio->io_private;
2019         zbookmark_t *zb = &zio->io_bookmark;
2020
2021         zio_data_buf_free(zio->io_data, zio->io_size);
2022
2023         mutex_enter(&spa->spa_scrub_lock);
2024         spa->spa_scrub_inflight--;
2025         cv_broadcast(&spa->spa_scrub_io_cv);
2026
2027         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2028                 char blkbuf[BP_SPRINTF_LEN];
2029
2030                 zcb->zcb_haderrors = 1;
2031                 zcb->zcb_errors[ioerr]++;
2032
2033                 if (dump_opt['b'] >= 2)
2034                         sprintf_blkptr(blkbuf, bp);
2035                 else
2036                         blkbuf[0] = '\0';
2037
2038                 (void) printf("zdb_blkptr_cb: "
2039                     "Got error %d reading "
2040                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2041                     ioerr,
2042                     (u_longlong_t)zb->zb_objset,
2043                     (u_longlong_t)zb->zb_object,
2044                     (u_longlong_t)zb->zb_level,
2045                     (u_longlong_t)zb->zb_blkid,
2046                     blkbuf);
2047         }
2048         mutex_exit(&spa->spa_scrub_lock);
2049 }
2050
2051 static int
2052 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2053     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2054 {
2055         zdb_cb_t *zcb = arg;
2056         char blkbuf[BP_SPRINTF_LEN];
2057         dmu_object_type_t type;
2058         boolean_t is_metadata;
2059
2060         if (bp == NULL)
2061                 return (0);
2062
2063         type = BP_GET_TYPE(bp);
2064
2065         zdb_count_block(zcb, zilog, bp,
2066             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2067
2068         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2069
2070         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2071                 size_t size = BP_GET_PSIZE(bp);
2072                 void *data = zio_data_buf_alloc(size);
2073                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2074
2075                 /* If it's an intent log block, failure is expected. */
2076                 if (zb->zb_level == ZB_ZIL_LEVEL)
2077                         flags |= ZIO_FLAG_SPECULATIVE;
2078
2079                 mutex_enter(&spa->spa_scrub_lock);
2080                 while (spa->spa_scrub_inflight > max_inflight)
2081                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2082                 spa->spa_scrub_inflight++;
2083                 mutex_exit(&spa->spa_scrub_lock);
2084
2085                 zio_nowait(zio_read(NULL, spa, bp, data, size,
2086                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2087
2088         }
2089
2090         zcb->zcb_readfails = 0;
2091
2092         if (dump_opt['b'] >= 4) {
2093                 sprintf_blkptr(blkbuf, bp);
2094                 (void) printf("objset %llu object %llu "
2095                     "level %lld offset 0x%llx %s\n",
2096                     (u_longlong_t)zb->zb_objset,
2097                     (u_longlong_t)zb->zb_object,
2098                     (longlong_t)zb->zb_level,
2099                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2100                     blkbuf);
2101         }
2102
2103         return (0);
2104 }
2105
2106 static void
2107 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2108 {
2109         vdev_t *vd = sm->sm_ppd;
2110
2111         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2112             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2113 }
2114
2115 /* ARGSUSED */
2116 static void
2117 zdb_space_map_load(space_map_t *sm)
2118 {
2119 }
2120
2121 static void
2122 zdb_space_map_unload(space_map_t *sm)
2123 {
2124         space_map_vacate(sm, zdb_leak, sm);
2125 }
2126
2127 /* ARGSUSED */
2128 static void
2129 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2130 {
2131 }
2132
2133 static space_map_ops_t zdb_space_map_ops = {
2134         zdb_space_map_load,
2135         zdb_space_map_unload,
2136         NULL,   /* alloc */
2137         zdb_space_map_claim,
2138         NULL,   /* free */
2139         NULL    /* maxsize */
2140 };
2141
2142 static void
2143 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2144 {
2145         ddt_bookmark_t ddb = { 0 };
2146         ddt_entry_t dde;
2147         int error;
2148         int p;
2149
2150         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2151                 blkptr_t blk;
2152                 ddt_phys_t *ddp = dde.dde_phys;
2153
2154                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2155                         return;
2156
2157                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2158
2159                 for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2160                         if (ddp->ddp_phys_birth == 0)
2161                                 continue;
2162                         ddt_bp_create(ddb.ddb_checksum,
2163                             &dde.dde_key, ddp, &blk);
2164                         if (p == DDT_PHYS_DITTO) {
2165                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2166                         } else {
2167                                 zcb->zcb_dedup_asize +=
2168                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2169                                 zcb->zcb_dedup_blocks++;
2170                         }
2171                 }
2172                 if (!dump_opt['L']) {
2173                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2174                         ddt_enter(ddt);
2175                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2176                         ddt_exit(ddt);
2177                 }
2178         }
2179
2180         ASSERT(error == ENOENT);
2181 }
2182
2183 static void
2184 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2185 {
2186         zcb->zcb_spa = spa;
2187         int c, m;
2188
2189         if (!dump_opt['L']) {
2190                 vdev_t *rvd = spa->spa_root_vdev;
2191                 for (c = 0; c < rvd->vdev_children; c++) {
2192                         vdev_t *vd = rvd->vdev_child[c];
2193                         for (m = 0; m < vd->vdev_ms_count; m++) {
2194                                 metaslab_t *msp = vd->vdev_ms[m];
2195                                 mutex_enter(&msp->ms_lock);
2196                                 space_map_unload(msp->ms_map);
2197                                 VERIFY(space_map_load(msp->ms_map,
2198                                     &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2199                                     spa->spa_meta_objset) == 0);
2200                                 msp->ms_map->sm_ppd = vd;
2201                                 mutex_exit(&msp->ms_lock);
2202                         }
2203                 }
2204         }
2205
2206         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2207
2208         zdb_ddt_leak_init(spa, zcb);
2209
2210         spa_config_exit(spa, SCL_CONFIG, FTAG);
2211 }
2212
2213 static void
2214 zdb_leak_fini(spa_t *spa)
2215 {
2216         int c, m;
2217
2218         if (!dump_opt['L']) {
2219                 vdev_t *rvd = spa->spa_root_vdev;
2220                 for (c = 0; c < rvd->vdev_children; c++) {
2221                         vdev_t *vd = rvd->vdev_child[c];
2222                         for (m = 0; m < vd->vdev_ms_count; m++) {
2223                                 metaslab_t *msp = vd->vdev_ms[m];
2224                                 mutex_enter(&msp->ms_lock);
2225                                 space_map_unload(msp->ms_map);
2226                                 mutex_exit(&msp->ms_lock);
2227                         }
2228                 }
2229         }
2230 }
2231
2232 /* ARGSUSED */
2233 static int
2234 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2235 {
2236         zdb_cb_t *zcb = arg;
2237
2238         if (dump_opt['b'] >= 4) {
2239                 char blkbuf[BP_SPRINTF_LEN];
2240                 sprintf_blkptr(blkbuf, bp);
2241                 (void) printf("[%s] %s\n",
2242                     "deferred free", blkbuf);
2243         }
2244         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2245         return (0);
2246 }
2247
2248 static int
2249 dump_block_stats(spa_t *spa)
2250 {
2251         zdb_cb_t zcb;
2252         zdb_blkstats_t *zb, *tzb;
2253         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2254         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2255         int leaks = 0;
2256         int e;
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         bzero(&zcb, sizeof(zdb_cb_t));
2274         zdb_leak_init(spa, &zcb);
2275
2276         /*
2277          * If there's a deferred-free bplist, process that first.
2278          */
2279         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2280             count_block_cb, &zcb, NULL);
2281         (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2282             count_block_cb, &zcb, NULL);
2283         if (spa_feature_is_active(spa,
2284             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2285                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2286                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2287                     &zcb, NULL));
2288         }
2289
2290         if (dump_opt['c'] > 1)
2291                 flags |= TRAVERSE_PREFETCH_DATA;
2292
2293         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2294
2295         /*
2296          * If we've traversed the data blocks then we need to wait for those
2297          * I/Os to complete. We leverage "The Godfather" zio to wait on
2298          * all async I/Os to complete.
2299          */
2300         if (dump_opt['c']) {
2301                 (void) zio_wait(spa->spa_async_zio_root);
2302                 spa->spa_async_zio_root = zio_root(spa, NULL, NULL,
2303                     ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2304                     ZIO_FLAG_GODFATHER);
2305         }
2306
2307         if (zcb.zcb_haderrors) {
2308                 (void) printf("\nError counts:\n\n");
2309                 (void) printf("\t%5s  %s\n", "errno", "count");
2310                 for (e = 0; e < 256; e++) {
2311                         if (zcb.zcb_errors[e] != 0) {
2312                                 (void) printf("\t%5d  %llu\n",
2313                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2314                         }
2315                 }
2316         }
2317
2318         /*
2319          * Report any leaked segments.
2320          */
2321         zdb_leak_fini(spa);
2322
2323         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2324
2325         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2326         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2327
2328         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2329         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2330
2331         if (total_found == total_alloc) {
2332                 if (!dump_opt['L'])
2333                         (void) printf("\n\tNo leaks (block sum matches space"
2334                             " maps exactly)\n");
2335         } else {
2336                 (void) printf("block traversal size %llu != alloc %llu "
2337                     "(%s %lld)\n",
2338                     (u_longlong_t)total_found,
2339                     (u_longlong_t)total_alloc,
2340                     (dump_opt['L']) ? "unreachable" : "leaked",
2341                     (longlong_t)(total_alloc - total_found));
2342                 leaks = 1;
2343         }
2344
2345         if (tzb->zb_count == 0)
2346                 return (2);
2347
2348         (void) printf("\n");
2349         (void) printf("\tbp count:      %10llu\n",
2350             (u_longlong_t)tzb->zb_count);
2351         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2352             (u_longlong_t)tzb->zb_lsize,
2353             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2354         (void) printf("\tbp physical:   %10llu      avg:"
2355             " %6llu     compression: %6.2f\n",
2356             (u_longlong_t)tzb->zb_psize,
2357             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2358             (double)tzb->zb_lsize / tzb->zb_psize);
2359         (void) printf("\tbp allocated:  %10llu      avg:"
2360             " %6llu     compression: %6.2f\n",
2361             (u_longlong_t)tzb->zb_asize,
2362             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2363             (double)tzb->zb_lsize / tzb->zb_asize);
2364         (void) printf("\tbp deduped:    %10llu    ref>1:"
2365             " %6llu   deduplication: %6.2f\n",
2366             (u_longlong_t)zcb.zcb_dedup_asize,
2367             (u_longlong_t)zcb.zcb_dedup_blocks,
2368             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2369         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2370             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2371
2372         if (dump_opt['b'] >= 2) {
2373                 int l, t, level;
2374                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2375                     "\t  avg\t comp\t%%Total\tType\n");
2376
2377                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2378                         char csize[32], lsize[32], psize[32], asize[32];
2379                         char avg[32];
2380                         char *typename;
2381
2382                         if (t < DMU_OT_NUMTYPES)
2383                                 typename = dmu_ot[t].ot_name;
2384                         else
2385                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2386
2387                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2388                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2389                                     "\t%5s\t%5s\t%6s\t%s\n",
2390                                     "-",
2391                                     "-",
2392                                     "-",
2393                                     "-",
2394                                     "-",
2395                                     "-",
2396                                     "-",
2397                                     typename);
2398                                 continue;
2399                         }
2400
2401                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2402                                 level = (l == -1 ? ZB_TOTAL : l);
2403                                 zb = &zcb.zcb_type[level][t];
2404
2405                                 if (zb->zb_asize == 0)
2406                                         continue;
2407
2408                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2409                                         continue;
2410
2411                                 if (level == 0 && zb->zb_asize ==
2412                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2413                                         continue;
2414
2415                                 zdb_nicenum(zb->zb_count, csize);
2416                                 zdb_nicenum(zb->zb_lsize, lsize);
2417                                 zdb_nicenum(zb->zb_psize, psize);
2418                                 zdb_nicenum(zb->zb_asize, asize);
2419                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2420
2421                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2422                                     "\t%5.2f\t%6.2f\t",
2423                                     csize, lsize, psize, asize, avg,
2424                                     (double)zb->zb_lsize / zb->zb_psize,
2425                                     100.0 * zb->zb_asize / tzb->zb_asize);
2426
2427                                 if (level == ZB_TOTAL)
2428                                         (void) printf("%s\n", typename);
2429                                 else
2430                                         (void) printf("    L%d %s\n",
2431                                             level, typename);
2432                         }
2433                 }
2434         }
2435
2436         (void) printf("\n");
2437
2438         if (leaks)
2439                 return (2);
2440
2441         if (zcb.zcb_haderrors)
2442                 return (3);
2443
2444         return (0);
2445 }
2446
2447 typedef struct zdb_ddt_entry {
2448         ddt_key_t       zdde_key;
2449         uint64_t        zdde_ref_blocks;
2450         uint64_t        zdde_ref_lsize;
2451         uint64_t        zdde_ref_psize;
2452         uint64_t        zdde_ref_dsize;
2453         avl_node_t      zdde_node;
2454 } zdb_ddt_entry_t;
2455
2456 /* ARGSUSED */
2457 static int
2458 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2459     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2460 {
2461         avl_tree_t *t = arg;
2462         avl_index_t where;
2463         zdb_ddt_entry_t *zdde, zdde_search;
2464
2465         if (bp == NULL)
2466                 return (0);
2467
2468         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2469                 (void) printf("traversing objset %llu, %llu objects, "
2470                     "%lu blocks so far\n",
2471                     (u_longlong_t)zb->zb_objset,
2472                     (u_longlong_t)bp->blk_fill,
2473                     avl_numnodes(t));
2474         }
2475
2476         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2477             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2478                 return (0);
2479
2480         ddt_key_fill(&zdde_search.zdde_key, bp);
2481
2482         zdde = avl_find(t, &zdde_search, &where);
2483
2484         if (zdde == NULL) {
2485                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2486                 zdde->zdde_key = zdde_search.zdde_key;
2487                 avl_insert(t, zdde, where);
2488         }
2489
2490         zdde->zdde_ref_blocks += 1;
2491         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2492         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2493         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2494
2495         return (0);
2496 }
2497
2498 static void
2499 dump_simulated_ddt(spa_t *spa)
2500 {
2501         avl_tree_t t;
2502         void *cookie = NULL;
2503         zdb_ddt_entry_t *zdde;
2504         ddt_histogram_t ddh_total;
2505         ddt_stat_t dds_total;
2506
2507         bzero(&ddh_total, sizeof (ddt_histogram_t));
2508         bzero(&dds_total, sizeof (ddt_stat_t));
2509
2510         avl_create(&t, ddt_entry_compare,
2511             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2512
2513         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2514
2515         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2516             zdb_ddt_add_cb, &t);
2517
2518         spa_config_exit(spa, SCL_CONFIG, FTAG);
2519
2520         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2521                 ddt_stat_t dds;
2522                 uint64_t refcnt = zdde->zdde_ref_blocks;
2523                 ASSERT(refcnt != 0);
2524
2525                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2526                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2527                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2528                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2529
2530                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2531                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2532                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2533                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2534
2535                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2536
2537                 umem_free(zdde, sizeof (*zdde));
2538         }
2539
2540         avl_destroy(&t);
2541
2542         ddt_histogram_stat(&dds_total, &ddh_total);
2543
2544         (void) printf("Simulated DDT histogram:\n");
2545
2546         zpool_dump_ddt(&dds_total, &ddh_total);
2547
2548         dump_dedup_ratio(&dds_total);
2549 }
2550
2551 static void
2552 dump_zpool(spa_t *spa)
2553 {
2554         dsl_pool_t *dp = spa_get_dsl(spa);
2555         int rc = 0;
2556
2557         if (dump_opt['S']) {
2558                 dump_simulated_ddt(spa);
2559                 return;
2560         }
2561
2562         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2563                 (void) printf("\nCached configuration:\n");
2564                 dump_nvlist(spa->spa_config, 8);
2565         }
2566
2567         if (dump_opt['C'])
2568                 dump_config(spa);
2569
2570         if (dump_opt['u'])
2571                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2572
2573         if (dump_opt['D'])
2574                 dump_all_ddts(spa);
2575
2576         if (dump_opt['d'] > 2 || dump_opt['m'])
2577                 dump_metaslabs(spa);
2578
2579         if (dump_opt['d'] || dump_opt['i']) {
2580                 dump_dir(dp->dp_meta_objset);
2581                 if (dump_opt['d'] >= 3) {
2582                         dump_bpobj(&spa->spa_deferred_bpobj, "Deferred frees");
2583                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2584                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2585                                     "Pool snapshot frees");
2586                         }
2587
2588                         if (spa_feature_is_active(spa,
2589                             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2590                                 dump_bptree(spa->spa_meta_objset,
2591                                     spa->spa_dsl_pool->dp_bptree_obj,
2592                                     "Pool dataset frees");
2593                         }
2594                         dump_dtl(spa->spa_root_vdev, 0);
2595                 }
2596                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2597                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2598         }
2599         if (dump_opt['b'] || dump_opt['c'])
2600                 rc = dump_block_stats(spa);
2601
2602         if (dump_opt['s'])
2603                 show_pool_stats(spa);
2604
2605         if (dump_opt['h'])
2606                 dump_history(spa);
2607
2608         if (rc != 0)
2609                 exit(rc);
2610 }
2611
2612 #define ZDB_FLAG_CHECKSUM       0x0001
2613 #define ZDB_FLAG_DECOMPRESS     0x0002
2614 #define ZDB_FLAG_BSWAP          0x0004
2615 #define ZDB_FLAG_GBH            0x0008
2616 #define ZDB_FLAG_INDIRECT       0x0010
2617 #define ZDB_FLAG_PHYS           0x0020
2618 #define ZDB_FLAG_RAW            0x0040
2619 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2620
2621 int flagbits[256];
2622
2623 static void
2624 zdb_print_blkptr(blkptr_t *bp, int flags)
2625 {
2626         char blkbuf[BP_SPRINTF_LEN];
2627
2628         if (flags & ZDB_FLAG_BSWAP)
2629                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2630
2631         sprintf_blkptr(blkbuf, bp);
2632         (void) printf("%s\n", blkbuf);
2633 }
2634
2635 static void
2636 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2637 {
2638         int i;
2639
2640         for (i = 0; i < nbps; i++)
2641                 zdb_print_blkptr(&bp[i], flags);
2642 }
2643
2644 static void
2645 zdb_dump_gbh(void *buf, int flags)
2646 {
2647         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2648 }
2649
2650 static void
2651 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2652 {
2653         if (flags & ZDB_FLAG_BSWAP)
2654                 byteswap_uint64_array(buf, size);
2655         VERIFY(write(fileno(stdout), buf, size) == size);
2656 }
2657
2658 static void
2659 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2660 {
2661         uint64_t *d = (uint64_t *)buf;
2662         int nwords = size / sizeof (uint64_t);
2663         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2664         int i, j;
2665         char *hdr, *c;
2666
2667
2668         if (do_bswap)
2669                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2670         else
2671                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2672
2673         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2674
2675         for (i = 0; i < nwords; i += 2) {
2676                 (void) printf("%06llx:  %016llx  %016llx  ",
2677                     (u_longlong_t)(i * sizeof (uint64_t)),
2678                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2679                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2680
2681                 c = (char *)&d[i];
2682                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2683                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2684                 (void) printf("\n");
2685         }
2686 }
2687
2688 /*
2689  * There are two acceptable formats:
2690  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2691  *      child[.child]*    - For example: 0.1.1
2692  *
2693  * The second form can be used to specify arbitrary vdevs anywhere
2694  * in the heirarchy.  For example, in a pool with a mirror of
2695  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2696  */
2697 static vdev_t *
2698 zdb_vdev_lookup(vdev_t *vdev, char *path)
2699 {
2700         char *s, *p, *q;
2701         int i;
2702
2703         if (vdev == NULL)
2704                 return (NULL);
2705
2706         /* First, assume the x.x.x.x format */
2707         i = (int)strtoul(path, &s, 10);
2708         if (s == path || (s && *s != '.' && *s != '\0'))
2709                 goto name;
2710         if (i < 0 || i >= vdev->vdev_children)
2711                 return (NULL);
2712
2713         vdev = vdev->vdev_child[i];
2714         if (*s == '\0')
2715                 return (vdev);
2716         return (zdb_vdev_lookup(vdev, s+1));
2717
2718 name:
2719         for (i = 0; i < vdev->vdev_children; i++) {
2720                 vdev_t *vc = vdev->vdev_child[i];
2721
2722                 if (vc->vdev_path == NULL) {
2723                         vc = zdb_vdev_lookup(vc, path);
2724                         if (vc == NULL)
2725                                 continue;
2726                         else
2727                                 return (vc);
2728                 }
2729
2730                 p = strrchr(vc->vdev_path, '/');
2731                 p = p ? p + 1 : vc->vdev_path;
2732                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2733
2734                 if (strcmp(vc->vdev_path, path) == 0)
2735                         return (vc);
2736                 if (strcmp(p, path) == 0)
2737                         return (vc);
2738                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2739                         return (vc);
2740         }
2741
2742         return (NULL);
2743 }
2744
2745 /*
2746  * Read a block from a pool and print it out.  The syntax of the
2747  * block descriptor is:
2748  *
2749  *      pool:vdev_specifier:offset:size[:flags]
2750  *
2751  *      pool           - The name of the pool you wish to read from
2752  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2753  *      offset         - offset, in hex, in bytes
2754  *      size           - Amount of data to read, in hex, in bytes
2755  *      flags          - A string of characters specifying options
2756  *               b: Decode a blkptr at given offset within block
2757  *              *c: Calculate and display checksums
2758  *               d: Decompress data before dumping
2759  *               e: Byteswap data before dumping
2760  *               g: Display data as a gang block header
2761  *               i: Display as an indirect block
2762  *               p: Do I/O to physical offset
2763  *               r: Dump raw data to stdout
2764  *
2765  *              * = not yet implemented
2766  */
2767 static void
2768 zdb_read_block(char *thing, spa_t *spa)
2769 {
2770         blkptr_t blk, *bp = &blk;
2771         dva_t *dva = bp->blk_dva;
2772         int flags = 0;
2773         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2774         zio_t *zio;
2775         vdev_t *vd;
2776         void *pbuf, *lbuf, *buf;
2777         char *s, *p, *dup, *vdev, *flagstr;
2778         int i, error;
2779
2780         dup = strdup(thing);
2781         s = strtok(dup, ":");
2782         vdev = s ? s : "";
2783         s = strtok(NULL, ":");
2784         offset = strtoull(s ? s : "", NULL, 16);
2785         s = strtok(NULL, ":");
2786         size = strtoull(s ? s : "", NULL, 16);
2787         s = strtok(NULL, ":");
2788         flagstr = s ? s : "";
2789
2790         s = NULL;
2791         if (size == 0)
2792                 s = "size must not be zero";
2793         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2794                 s = "size must be a multiple of sector size";
2795         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2796                 s = "offset must be a multiple of sector size";
2797         if (s) {
2798                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2799                 free(dup);
2800                 return;
2801         }
2802
2803         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2804                 for (i = 0; flagstr[i]; i++) {
2805                         int bit = flagbits[(uchar_t)flagstr[i]];
2806
2807                         if (bit == 0) {
2808                                 (void) printf("***Invalid flag: %c\n",
2809                                     flagstr[i]);
2810                                 continue;
2811                         }
2812                         flags |= bit;
2813
2814                         /* If it's not something with an argument, keep going */
2815                         if ((bit & (ZDB_FLAG_CHECKSUM |
2816                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2817                                 continue;
2818
2819                         p = &flagstr[i + 1];
2820                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2821                                 blkptr_offset = strtoull(p, &p, 16);
2822                         if (*p != ':' && *p != '\0') {
2823                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2824                                 free(dup);
2825                                 return;
2826                         }
2827                 }
2828         }
2829
2830         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2831         if (vd == NULL) {
2832                 (void) printf("***Invalid vdev: %s\n", vdev);
2833                 free(dup);
2834                 return;
2835         } else {
2836                 if (vd->vdev_path)
2837                         (void) fprintf(stderr, "Found vdev: %s\n",
2838                             vd->vdev_path);
2839                 else
2840                         (void) fprintf(stderr, "Found vdev type: %s\n",
2841                             vd->vdev_ops->vdev_op_type);
2842         }
2843
2844         psize = size;
2845         lsize = size;
2846
2847         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2848         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2849
2850         BP_ZERO(bp);
2851
2852         DVA_SET_VDEV(&dva[0], vd->vdev_id);
2853         DVA_SET_OFFSET(&dva[0], offset);
2854         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2855         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2856
2857         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2858
2859         BP_SET_LSIZE(bp, lsize);
2860         BP_SET_PSIZE(bp, psize);
2861         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2862         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2863         BP_SET_TYPE(bp, DMU_OT_NONE);
2864         BP_SET_LEVEL(bp, 0);
2865         BP_SET_DEDUP(bp, 0);
2866         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2867
2868         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2869         zio = zio_root(spa, NULL, NULL, 0);
2870
2871         if (vd == vd->vdev_top) {
2872                 /*
2873                  * Treat this as a normal block read.
2874                  */
2875                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2876                     ZIO_PRIORITY_SYNC_READ,
2877                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2878         } else {
2879                 /*
2880                  * Treat this as a vdev child I/O.
2881                  */
2882                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2883                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2884                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2885                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2886                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2887         }
2888
2889         error = zio_wait(zio);
2890         spa_config_exit(spa, SCL_STATE, FTAG);
2891
2892         if (error) {
2893                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2894                 goto out;
2895         }
2896
2897         if (flags & ZDB_FLAG_DECOMPRESS) {
2898                 /*
2899                  * We don't know how the data was compressed, so just try
2900                  * every decompress function at every inflated blocksize.
2901                  */
2902                 enum zio_compress c;
2903                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2904                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2905
2906                 bcopy(pbuf, pbuf2, psize);
2907
2908                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2909                     SPA_MAXBLOCKSIZE - psize) == 0);
2910
2911                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2912                     SPA_MAXBLOCKSIZE - psize) == 0);
2913
2914                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2915                     lsize -= SPA_MINBLOCKSIZE) {
2916                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2917                                 if (zio_decompress_data(c, pbuf, lbuf,
2918                                     psize, lsize) == 0 &&
2919                                     zio_decompress_data(c, pbuf2, lbuf2,
2920                                     psize, lsize) == 0 &&
2921                                     bcmp(lbuf, lbuf2, lsize) == 0)
2922                                         break;
2923                         }
2924                         if (c != ZIO_COMPRESS_FUNCTIONS)
2925                                 break;
2926                         lsize -= SPA_MINBLOCKSIZE;
2927                 }
2928
2929                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2930                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2931
2932                 if (lsize <= psize) {
2933                         (void) printf("Decompress of %s failed\n", thing);
2934                         goto out;
2935                 }
2936                 buf = lbuf;
2937                 size = lsize;
2938         } else {
2939                 buf = pbuf;
2940                 size = psize;
2941         }
2942
2943         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2944                 zdb_print_blkptr((blkptr_t *)(void *)
2945                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2946         else if (flags & ZDB_FLAG_RAW)
2947                 zdb_dump_block_raw(buf, size, flags);
2948         else if (flags & ZDB_FLAG_INDIRECT)
2949                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2950                     flags);
2951         else if (flags & ZDB_FLAG_GBH)
2952                 zdb_dump_gbh(buf, flags);
2953         else
2954                 zdb_dump_block(thing, buf, size, flags);
2955
2956 out:
2957         umem_free(pbuf, SPA_MAXBLOCKSIZE);
2958         umem_free(lbuf, SPA_MAXBLOCKSIZE);
2959         free(dup);
2960 }
2961
2962 static boolean_t
2963 pool_match(nvlist_t *cfg, char *tgt)
2964 {
2965         uint64_t v, guid = strtoull(tgt, NULL, 0);
2966         char *s;
2967
2968         if (guid != 0) {
2969                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
2970                         return (v == guid);
2971         } else {
2972                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
2973                         return (strcmp(s, tgt) == 0);
2974         }
2975         return (B_FALSE);
2976 }
2977
2978 static char *
2979 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
2980 {
2981         nvlist_t *pools;
2982         nvlist_t *match = NULL;
2983         char *name = NULL;
2984         char *sepp = NULL;
2985         char sep = 0;
2986         int count = 0;
2987         importargs_t args = { 0 };
2988
2989         args.paths = dirc;
2990         args.path = dirv;
2991         args.can_be_active = B_TRUE;
2992
2993         if ((sepp = strpbrk(*target, "/@")) != NULL) {
2994                 sep = *sepp;
2995                 *sepp = '\0';
2996         }
2997
2998         pools = zpool_search_import(g_zfs, &args);
2999
3000         if (pools != NULL) {
3001                 nvpair_t *elem = NULL;
3002                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3003                         verify(nvpair_value_nvlist(elem, configp) == 0);
3004                         if (pool_match(*configp, *target)) {
3005                                 count++;
3006                                 if (match != NULL) {
3007                                         /* print previously found config */
3008                                         if (name != NULL) {
3009                                                 (void) printf("%s\n", name);
3010                                                 dump_nvlist(match, 8);
3011                                                 name = NULL;
3012                                         }
3013                                         (void) printf("%s\n",
3014                                             nvpair_name(elem));
3015                                         dump_nvlist(*configp, 8);
3016                                 } else {
3017                                         match = *configp;
3018                                         name = nvpair_name(elem);
3019                                 }
3020                         }
3021                 }
3022         }
3023         if (count > 1)
3024                 (void) fatal("\tMatched %d pools - use pool GUID "
3025                     "instead of pool name or \n"
3026                     "\tpool name part of a dataset name to select pool", count);
3027
3028         if (sepp)
3029                 *sepp = sep;
3030         /*
3031          * If pool GUID was specified for pool id, replace it with pool name
3032          */
3033         if (name && (strstr(*target, name) != *target)) {
3034                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3035
3036                 *target = umem_alloc(sz, UMEM_NOFAIL);
3037                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3038         }
3039
3040         *configp = name ? match : NULL;
3041
3042         return (name);
3043 }
3044
3045 int
3046 main(int argc, char **argv)
3047 {
3048         int i, c;
3049         struct rlimit rl = { 1024, 1024 };
3050         spa_t *spa = NULL;
3051         objset_t *os = NULL;
3052         int dump_all = 1;
3053         int verbose = 0;
3054         int error = 0;
3055         char **searchdirs = NULL;
3056         int nsearch = 0;
3057         char *target;
3058         nvlist_t *policy = NULL;
3059         uint64_t max_txg = UINT64_MAX;
3060         int rewind = ZPOOL_NEVER_REWIND;
3061         char *spa_config_path_env;
3062
3063         (void) setrlimit(RLIMIT_NOFILE, &rl);
3064         (void) enable_extended_FILE_stdio(-1, -1);
3065
3066         dprintf_setup(&argc, argv);
3067
3068         /*
3069          * If there is an environment variable SPA_CONFIG_PATH it overrides
3070          * default spa_config_path setting. If -U flag is specified it will
3071          * override this environment variable settings once again.
3072          */
3073         spa_config_path_env = getenv("SPA_CONFIG_PATH");
3074         if (spa_config_path_env != NULL)
3075                 spa_config_path = spa_config_path_env;
3076
3077         while ((c = getopt(argc, argv, "bcdhilmM:suCDRSAFLXevp:t:U:P")) != -1) {
3078                 switch (c) {
3079                 case 'b':
3080                 case 'c':
3081                 case 'd':
3082                 case 'h':
3083                 case 'i':
3084                 case 'l':
3085                 case 'm':
3086                 case 's':
3087                 case 'u':
3088                 case 'C':
3089                 case 'D':
3090                 case 'R':
3091                 case 'S':
3092                         dump_opt[c]++;
3093                         dump_all = 0;
3094                         break;
3095                 case 'A':
3096                 case 'F':
3097                 case 'L':
3098                 case 'X':
3099                 case 'e':
3100                 case 'P':
3101                         dump_opt[c]++;
3102                         break;
3103                 case 'v':
3104                         verbose++;
3105                         break;
3106                 case 'M':
3107                         max_inflight = strtoull(optarg, NULL, 0);
3108                         if (max_inflight == 0) {
3109                                 (void) fprintf(stderr, "maximum number "
3110                                     "of inflight I/Os must be greater "
3111                                     "than 0\n");
3112                                 usage();
3113                         }
3114                         break;
3115                 case 'p':
3116                         if (searchdirs == NULL) {
3117                                 searchdirs = umem_alloc(sizeof (char *),
3118                                     UMEM_NOFAIL);
3119                         } else {
3120                                 char **tmp = umem_alloc((nsearch + 1) *
3121                                     sizeof (char *), UMEM_NOFAIL);
3122                                 bcopy(searchdirs, tmp, nsearch *
3123                                     sizeof (char *));
3124                                 umem_free(searchdirs,
3125                                     nsearch * sizeof (char *));
3126                                 searchdirs = tmp;
3127                         }
3128                         searchdirs[nsearch++] = optarg;
3129                         break;
3130                 case 't':
3131                         max_txg = strtoull(optarg, NULL, 0);
3132                         if (max_txg < TXG_INITIAL) {
3133                                 (void) fprintf(stderr, "incorrect txg "
3134                                     "specified: %s\n", optarg);
3135                                 usage();
3136                         }
3137                         break;
3138                 case 'U':
3139                         spa_config_path = optarg;
3140                         break;
3141                 default:
3142                         usage();
3143                         break;
3144                 }
3145         }
3146
3147         if (!dump_opt['e'] && searchdirs != NULL) {
3148                 (void) fprintf(stderr, "-p option requires use of -e\n");
3149                 usage();
3150         }
3151
3152         kernel_init(FREAD);
3153         if ((g_zfs = libzfs_init()) == NULL)
3154                 return (1);
3155
3156         if (dump_all)
3157                 verbose = MAX(verbose, 1);
3158
3159         for (c = 0; c < 256; c++) {
3160                 if (dump_all && !strchr("elAFLRSXP", c))
3161                         dump_opt[c] = 1;
3162                 if (dump_opt[c])
3163                         dump_opt[c] += verbose;
3164         }
3165
3166         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3167         zfs_recover = (dump_opt['A'] > 1);
3168
3169         argc -= optind;
3170         argv += optind;
3171
3172         if (argc < 2 && dump_opt['R'])
3173                 usage();
3174         if (argc < 1) {
3175                 if (!dump_opt['e'] && dump_opt['C']) {
3176                         dump_cachefile(spa_config_path);
3177                         return (0);
3178                 }
3179                 usage();
3180         }
3181
3182         if (dump_opt['l']) {
3183                 dump_label(argv[0]);
3184                 return (0);
3185         }
3186
3187         if (dump_opt['X'] || dump_opt['F'])
3188                 rewind = ZPOOL_DO_REWIND |
3189                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3190
3191         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3192             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3193             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3194                 fatal("internal error: %s", strerror(ENOMEM));
3195
3196         error = 0;
3197         target = argv[0];
3198
3199         if (dump_opt['e']) {
3200                 nvlist_t *cfg = NULL;
3201                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3202
3203                 error = ENOENT;
3204                 if (name) {
3205                         if (dump_opt['C'] > 1) {
3206                                 (void) printf("\nConfiguration for import:\n");
3207                                 dump_nvlist(cfg, 8);
3208                         }
3209                         if (nvlist_add_nvlist(cfg,
3210                             ZPOOL_REWIND_POLICY, policy) != 0) {
3211                                 fatal("can't open '%s': %s",
3212                                     target, strerror(ENOMEM));
3213                         }
3214                         if ((error = spa_import(name, cfg, NULL,
3215                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3216                                 error = spa_import(name, cfg, NULL,
3217                                     ZFS_IMPORT_VERBATIM);
3218                         }
3219                 }
3220         }
3221
3222         if (error == 0) {
3223                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3224                         error = spa_open_rewind(target, &spa, FTAG, policy,
3225                             NULL);
3226                         if (error) {
3227                                 /*
3228                                  * If we're missing the log device then
3229                                  * try opening the pool after clearing the
3230                                  * log state.
3231                                  */
3232                                 mutex_enter(&spa_namespace_lock);
3233                                 if ((spa = spa_lookup(target)) != NULL &&
3234                                     spa->spa_log_state == SPA_LOG_MISSING) {
3235                                         spa->spa_log_state = SPA_LOG_CLEAR;
3236                                         error = 0;
3237                                 }
3238                                 mutex_exit(&spa_namespace_lock);
3239
3240                                 if (!error) {
3241                                         error = spa_open_rewind(target, &spa,
3242                                             FTAG, policy, NULL);
3243                                 }
3244                         }
3245                 } else {
3246                         error = dmu_objset_own(target, DMU_OST_ANY,
3247                             B_TRUE, FTAG, &os);
3248                 }
3249         }
3250         nvlist_free(policy);
3251
3252         if (error)
3253                 fatal("can't open '%s': %s", target, strerror(error));
3254
3255         argv++;
3256         argc--;
3257         if (!dump_opt['R']) {
3258                 if (argc > 0) {
3259                         zopt_objects = argc;
3260                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3261                         for (i = 0; i < zopt_objects; i++) {
3262                                 errno = 0;
3263                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3264                                 if (zopt_object[i] == 0 && errno != 0)
3265                                         fatal("bad number %s: %s",
3266                                             argv[i], strerror(errno));
3267                         }
3268                 }
3269                 if (os != NULL) {
3270                         dump_dir(os);
3271                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3272                         dump_dir(spa->spa_meta_objset);
3273                 } else {
3274                         dump_zpool(spa);
3275                 }
3276         } else {
3277                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3278                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3279                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3280                 flagbits['e'] = ZDB_FLAG_BSWAP;
3281                 flagbits['g'] = ZDB_FLAG_GBH;
3282                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3283                 flagbits['p'] = ZDB_FLAG_PHYS;
3284                 flagbits['r'] = ZDB_FLAG_RAW;
3285
3286                 for (i = 0; i < argc; i++)
3287                         zdb_read_block(argv[i], spa);
3288         }
3289
3290         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3291
3292         fuid_table_destroy();
3293         sa_loaded = B_FALSE;
3294
3295         libzfs_fini(g_zfs);
3296         kernel_fini();
3297
3298         return (0);
3299 }