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 static void
1331 dump_znode_sa_xattr(sa_handle_t *hdl)
1332 {
1333         nvlist_t *sa_xattr;
1334         nvpair_t *elem = NULL;
1335         int sa_xattr_size = 0;
1336         int sa_xattr_entries = 0;
1337         int error;
1338         char *sa_xattr_packed;
1339
1340         error = sa_size(hdl, sa_attr_table[ZPL_DXATTR], &sa_xattr_size);
1341         if (error || sa_xattr_size == 0)
1342                 return;
1343
1344         sa_xattr_packed = malloc(sa_xattr_size);
1345         if (sa_xattr_packed == NULL)
1346                 return;
1347
1348         error = sa_lookup(hdl, sa_attr_table[ZPL_DXATTR],
1349             sa_xattr_packed, sa_xattr_size);
1350         if (error) {
1351                 free(sa_xattr_packed);
1352                 return;
1353         }
1354
1355         error = nvlist_unpack(sa_xattr_packed, sa_xattr_size, &sa_xattr, 0);
1356         if (error) {
1357                 free(sa_xattr_packed);
1358                 return;
1359         }
1360
1361         while ((elem = nvlist_next_nvpair(sa_xattr, elem)) != NULL)
1362                 sa_xattr_entries++;
1363
1364         (void) printf("\tSA xattrs: %d bytes, %d entries\n\n",
1365             sa_xattr_size, sa_xattr_entries);
1366         while ((elem = nvlist_next_nvpair(sa_xattr, elem)) != NULL) {
1367                 uchar_t *value;
1368                 uint_t cnt, idx;
1369
1370                 (void) printf("\t\t%s = ", nvpair_name(elem));
1371                 nvpair_value_byte_array(elem, &value, &cnt);
1372                 for (idx = 0 ; idx < cnt ; ++idx) {
1373                         if (isprint(value[idx]))
1374                                 (void) putchar(value[idx]);
1375                         else
1376                                 (void) printf("\\%3.3o", value[idx]);
1377                 }
1378                 (void) putchar('\n');
1379         }
1380
1381         nvlist_free(sa_xattr);
1382         free(sa_xattr_packed);
1383 }
1384
1385 /*ARGSUSED*/
1386 static void
1387 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1388 {
1389         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1390         sa_handle_t *hdl;
1391         uint64_t xattr, rdev, gen;
1392         uint64_t uid, gid, mode, fsize, parent, links;
1393         uint64_t pflags;
1394         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1395         time_t z_crtime, z_atime, z_mtime, z_ctime;
1396         sa_bulk_attr_t bulk[12];
1397         int idx = 0;
1398         int error;
1399
1400         if (!sa_loaded) {
1401                 uint64_t sa_attrs = 0;
1402                 uint64_t version;
1403
1404                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1405                     8, 1, &version) == 0);
1406                 if (version >= ZPL_VERSION_SA) {
1407                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1408                             8, 1, &sa_attrs) == 0);
1409                 }
1410                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1411                     ZPL_END, &sa_attr_table)) != 0) {
1412                         (void) printf("sa_setup failed errno %d, can't "
1413                             "display znode contents\n", error);
1414                         return;
1415                 }
1416                 sa_loaded = B_TRUE;
1417         }
1418
1419         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1420                 (void) printf("Failed to get handle for SA znode\n");
1421                 return;
1422         }
1423
1424         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1425         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1426         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1427             &links, 8);
1428         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1429         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1430             &mode, 8);
1431         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1432             NULL, &parent, 8);
1433         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1434             &fsize, 8);
1435         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1436             acctm, 16);
1437         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1438             modtm, 16);
1439         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1440             crtm, 16);
1441         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1442             chgtm, 16);
1443         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1444             &pflags, 8);
1445
1446         if (sa_bulk_lookup(hdl, bulk, idx)) {
1447                 (void) sa_handle_destroy(hdl);
1448                 return;
1449         }
1450
1451         error = zfs_obj_to_path(os, object, path, sizeof (path));
1452         if (error != 0) {
1453                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1454                     (u_longlong_t)object);
1455         }
1456         if (dump_opt['d'] < 3) {
1457                 (void) printf("\t%s\n", path);
1458                 (void) sa_handle_destroy(hdl);
1459                 return;
1460         }
1461
1462         z_crtime = (time_t)crtm[0];
1463         z_atime = (time_t)acctm[0];
1464         z_mtime = (time_t)modtm[0];
1465         z_ctime = (time_t)chgtm[0];
1466
1467         (void) printf("\tpath   %s\n", path);
1468         dump_uidgid(os, uid, gid);
1469         (void) printf("\tatime  %s", ctime(&z_atime));
1470         (void) printf("\tmtime  %s", ctime(&z_mtime));
1471         (void) printf("\tctime  %s", ctime(&z_ctime));
1472         (void) printf("\tcrtime %s", ctime(&z_crtime));
1473         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1474         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1475         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1476         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1477         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1478         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1479         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1480             sizeof (uint64_t)) == 0)
1481                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1482         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1483             sizeof (uint64_t)) == 0)
1484                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1485         dump_znode_sa_xattr(hdl);
1486         sa_handle_destroy(hdl);
1487 }
1488
1489 /*ARGSUSED*/
1490 static void
1491 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1492 {
1493 }
1494
1495 /*ARGSUSED*/
1496 static void
1497 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1498 {
1499 }
1500
1501 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1502         dump_none,              /* unallocated                  */
1503         dump_zap,               /* object directory             */
1504         dump_uint64,            /* object array                 */
1505         dump_none,              /* packed nvlist                */
1506         dump_packed_nvlist,     /* packed nvlist size           */
1507         dump_none,              /* bplist                       */
1508         dump_none,              /* bplist header                */
1509         dump_none,              /* SPA space map header         */
1510         dump_none,              /* SPA space map                */
1511         dump_none,              /* ZIL intent log               */
1512         dump_dnode,             /* DMU dnode                    */
1513         dump_dmu_objset,        /* DMU objset                   */
1514         dump_dsl_dir,           /* DSL directory                */
1515         dump_zap,               /* DSL directory child map      */
1516         dump_zap,               /* DSL dataset snap map         */
1517         dump_zap,               /* DSL props                    */
1518         dump_dsl_dataset,       /* DSL dataset                  */
1519         dump_znode,             /* ZFS znode                    */
1520         dump_acl,               /* ZFS V0 ACL                   */
1521         dump_uint8,             /* ZFS plain file               */
1522         dump_zpldir,            /* ZFS directory                */
1523         dump_zap,               /* ZFS master node              */
1524         dump_zap,               /* ZFS delete queue             */
1525         dump_uint8,             /* zvol object                  */
1526         dump_zap,               /* zvol prop                    */
1527         dump_uint8,             /* other uint8[]                */
1528         dump_uint64,            /* other uint64[]               */
1529         dump_zap,               /* other ZAP                    */
1530         dump_zap,               /* persistent error log         */
1531         dump_uint8,             /* SPA history                  */
1532         dump_uint64,            /* SPA history offsets          */
1533         dump_zap,               /* Pool properties              */
1534         dump_zap,               /* DSL permissions              */
1535         dump_acl,               /* ZFS ACL                      */
1536         dump_uint8,             /* ZFS SYSACL                   */
1537         dump_none,              /* FUID nvlist                  */
1538         dump_packed_nvlist,     /* FUID nvlist size             */
1539         dump_zap,               /* DSL dataset next clones      */
1540         dump_zap,               /* DSL scrub queue              */
1541         dump_zap,               /* ZFS user/group used          */
1542         dump_zap,               /* ZFS user/group quota         */
1543         dump_zap,               /* snapshot refcount tags       */
1544         dump_ddt_zap,           /* DDT ZAP object               */
1545         dump_zap,               /* DDT statistics               */
1546         dump_znode,             /* SA object                    */
1547         dump_zap,               /* SA Master Node               */
1548         dump_sa_attrs,          /* SA attribute registration    */
1549         dump_sa_layouts,        /* SA attribute layouts         */
1550         dump_zap,               /* DSL scrub translations       */
1551         dump_none,              /* fake dedup BP                */
1552         dump_zap,               /* deadlist                     */
1553         dump_none,              /* deadlist hdr                 */
1554         dump_zap,               /* dsl clones                   */
1555         dump_none,              /* bpobj subobjs                */
1556         dump_unknown,           /* Unknown type, must be last   */
1557 };
1558
1559 static void
1560 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1561 {
1562         dmu_buf_t *db = NULL;
1563         dmu_object_info_t doi;
1564         dnode_t *dn;
1565         void *bonus = NULL;
1566         size_t bsize = 0;
1567         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1568         char bonus_size[32];
1569         char aux[50];
1570         int error;
1571
1572         if (*print_header) {
1573                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1574                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1575                     "%full", "type");
1576                 *print_header = 0;
1577         }
1578
1579         if (object == 0) {
1580                 dn = DMU_META_DNODE(os);
1581         } else {
1582                 error = dmu_bonus_hold(os, object, FTAG, &db);
1583                 if (error)
1584                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1585                             object, error);
1586                 bonus = db->db_data;
1587                 bsize = db->db_size;
1588                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1589         }
1590         dmu_object_info_from_dnode(dn, &doi);
1591
1592         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1593         zdb_nicenum(doi.doi_data_block_size, dblk);
1594         zdb_nicenum(doi.doi_max_offset, lsize);
1595         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1596         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1597         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1598             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1599             doi.doi_max_offset);
1600
1601         aux[0] = '\0';
1602
1603         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1604                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1605                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1606         }
1607
1608         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1609                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1610                     ZDB_COMPRESS_NAME(doi.doi_compress));
1611         }
1612
1613         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1614             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1615             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1616
1617         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1618                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1619                     "", "", "", "", "", bonus_size, "bonus",
1620                     ZDB_OT_NAME(doi.doi_bonus_type));
1621         }
1622
1623         if (verbosity >= 4) {
1624                 (void) printf("\tdnode flags: %s%s%s\n",
1625                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1626                     "USED_BYTES " : "",
1627                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1628                     "USERUSED_ACCOUNTED " : "",
1629                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1630                     "SPILL_BLKPTR" : "");
1631                 (void) printf("\tdnode maxblkid: %llu\n",
1632                     (longlong_t)dn->dn_phys->dn_maxblkid);
1633
1634                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1635                     bonus, bsize);
1636                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1637                 *print_header = 1;
1638         }
1639
1640         if (verbosity >= 5)
1641                 dump_indirect(dn);
1642
1643         if (verbosity >= 5) {
1644                 /*
1645                  * Report the list of segments that comprise the object.
1646                  */
1647                 uint64_t start = 0;
1648                 uint64_t end;
1649                 uint64_t blkfill = 1;
1650                 int minlvl = 1;
1651
1652                 if (dn->dn_type == DMU_OT_DNODE) {
1653                         minlvl = 0;
1654                         blkfill = DNODES_PER_BLOCK;
1655                 }
1656
1657                 for (;;) {
1658                         char segsize[32];
1659                         error = dnode_next_offset(dn,
1660                             0, &start, minlvl, blkfill, 0);
1661                         if (error)
1662                                 break;
1663                         end = start;
1664                         error = dnode_next_offset(dn,
1665                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1666                         zdb_nicenum(end - start, segsize);
1667                         (void) printf("\t\tsegment [%016llx, %016llx)"
1668                             " size %5s\n", (u_longlong_t)start,
1669                             (u_longlong_t)end, segsize);
1670                         if (error)
1671                                 break;
1672                         start = end;
1673                 }
1674         }
1675
1676         if (db != NULL)
1677                 dmu_buf_rele(db, FTAG);
1678 }
1679
1680 static char *objset_types[DMU_OST_NUMTYPES] = {
1681         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1682
1683 static void
1684 dump_dir(objset_t *os)
1685 {
1686         dmu_objset_stats_t dds;
1687         uint64_t object, object_count;
1688         uint64_t refdbytes, usedobjs, scratch;
1689         char numbuf[32];
1690         char blkbuf[BP_SPRINTF_LEN + 20];
1691         char osname[MAXNAMELEN];
1692         char *type = "UNKNOWN";
1693         int verbosity = dump_opt['d'];
1694         int print_header = 1;
1695         int i, error;
1696
1697         dmu_objset_fast_stat(os, &dds);
1698
1699         if (dds.dds_type < DMU_OST_NUMTYPES)
1700                 type = objset_types[dds.dds_type];
1701
1702         if (dds.dds_type == DMU_OST_META) {
1703                 dds.dds_creation_txg = TXG_INITIAL;
1704                 usedobjs = os->os_rootbp->blk_fill;
1705                 refdbytes = os->os_spa->spa_dsl_pool->
1706                     dp_mos_dir->dd_phys->dd_used_bytes;
1707         } else {
1708                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1709         }
1710
1711         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1712
1713         zdb_nicenum(refdbytes, numbuf);
1714
1715         if (verbosity >= 4) {
1716                 (void) sprintf(blkbuf, ", rootbp ");
1717                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1718         } else {
1719                 blkbuf[0] = '\0';
1720         }
1721
1722         dmu_objset_name(os, osname);
1723
1724         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1725             "%s, %llu objects%s\n",
1726             osname, type, (u_longlong_t)dmu_objset_id(os),
1727             (u_longlong_t)dds.dds_creation_txg,
1728             numbuf, (u_longlong_t)usedobjs, blkbuf);
1729
1730         if (zopt_objects != 0) {
1731                 for (i = 0; i < zopt_objects; i++)
1732                         dump_object(os, zopt_object[i], verbosity,
1733                             &print_header);
1734                 (void) printf("\n");
1735                 return;
1736         }
1737
1738         if (dump_opt['i'] != 0 || verbosity >= 2)
1739                 dump_intent_log(dmu_objset_zil(os));
1740
1741         if (dmu_objset_ds(os) != NULL)
1742                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1743
1744         if (verbosity < 2)
1745                 return;
1746
1747         if (os->os_rootbp->blk_birth == 0)
1748                 return;
1749
1750         dump_object(os, 0, verbosity, &print_header);
1751         object_count = 0;
1752         if (DMU_USERUSED_DNODE(os) != NULL &&
1753             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1754                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1755                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1756         }
1757
1758         object = 0;
1759         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1760                 dump_object(os, object, verbosity, &print_header);
1761                 object_count++;
1762         }
1763
1764         ASSERT3U(object_count, ==, usedobjs);
1765
1766         (void) printf("\n");
1767
1768         if (error != ESRCH) {
1769                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1770                 abort();
1771         }
1772 }
1773
1774 static void
1775 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1776 {
1777         time_t timestamp = ub->ub_timestamp;
1778
1779         (void) printf("%s", header ? header : "");
1780         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1781         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1782         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1783         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1784         (void) printf("\ttimestamp = %llu UTC = %s",
1785             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1786         if (dump_opt['u'] >= 3) {
1787                 char blkbuf[BP_SPRINTF_LEN];
1788                 sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1789                 (void) printf("\trootbp = %s\n", blkbuf);
1790         }
1791         (void) printf("%s", footer ? footer : "");
1792 }
1793
1794 static void
1795 dump_config(spa_t *spa)
1796 {
1797         dmu_buf_t *db;
1798         size_t nvsize = 0;
1799         int error = 0;
1800
1801
1802         error = dmu_bonus_hold(spa->spa_meta_objset,
1803             spa->spa_config_object, FTAG, &db);
1804
1805         if (error == 0) {
1806                 nvsize = *(uint64_t *)db->db_data;
1807                 dmu_buf_rele(db, FTAG);
1808
1809                 (void) printf("\nMOS Configuration:\n");
1810                 dump_packed_nvlist(spa->spa_meta_objset,
1811                     spa->spa_config_object, (void *)&nvsize, 1);
1812         } else {
1813                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1814                     (u_longlong_t)spa->spa_config_object, error);
1815         }
1816 }
1817
1818 static void
1819 dump_cachefile(const char *cachefile)
1820 {
1821         int fd;
1822         struct stat64 statbuf;
1823         char *buf;
1824         nvlist_t *config;
1825
1826         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1827                 (void) printf("cannot open '%s': %s\n", cachefile,
1828                     strerror(errno));
1829                 exit(1);
1830         }
1831
1832         if (fstat64(fd, &statbuf) != 0) {
1833                 (void) printf("failed to stat '%s': %s\n", cachefile,
1834                     strerror(errno));
1835                 exit(1);
1836         }
1837
1838         if ((buf = malloc(statbuf.st_size)) == NULL) {
1839                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1840                     (u_longlong_t)statbuf.st_size);
1841                 exit(1);
1842         }
1843
1844         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1845                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1846                     (u_longlong_t)statbuf.st_size);
1847                 exit(1);
1848         }
1849
1850         (void) close(fd);
1851
1852         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1853                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1854                 exit(1);
1855         }
1856
1857         free(buf);
1858
1859         dump_nvlist(config, 0);
1860
1861         nvlist_free(config);
1862 }
1863
1864 #define ZDB_MAX_UB_HEADER_SIZE 32
1865
1866 static void
1867 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1868 {
1869         vdev_t vd;
1870         vdev_t *vdp = &vd;
1871         char header[ZDB_MAX_UB_HEADER_SIZE];
1872         int i;
1873
1874         vd.vdev_ashift = ashift;
1875         vdp->vdev_top = vdp;
1876
1877         for (i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1878                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1879                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1880
1881                 if (uberblock_verify(ub))
1882                         continue;
1883                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1884                     "Uberblock[%d]\n", i);
1885                 dump_uberblock(ub, header, "");
1886         }
1887 }
1888
1889 static void
1890 dump_label(const char *dev)
1891 {
1892         int fd;
1893         vdev_label_t label;
1894         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1895         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1896         struct stat64 statbuf;
1897         uint64_t psize, ashift;
1898         int len = strlen(dev) + 1;
1899         int l;
1900
1901         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1902                 len++;
1903                 path = malloc(len);
1904                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1905         } else {
1906                 path = strdup(dev);
1907         }
1908
1909         if ((fd = open64(path, O_RDONLY)) < 0) {
1910                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
1911                 free(path);
1912                 exit(1);
1913         }
1914
1915         if (fstat64_blk(fd, &statbuf) != 0) {
1916                 (void) printf("failed to stat '%s': %s\n", path,
1917                     strerror(errno));
1918                 free(path);
1919                 (void) close(fd);
1920                 exit(1);
1921         }
1922
1923         psize = statbuf.st_size;
1924         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1925
1926         for (l = 0; l < VDEV_LABELS; l++) {
1927                 nvlist_t *config = NULL;
1928
1929                 (void) printf("--------------------------------------------\n");
1930                 (void) printf("LABEL %d\n", l);
1931                 (void) printf("--------------------------------------------\n");
1932
1933                 if (pread64(fd, &label, sizeof (label),
1934                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1935                         (void) printf("failed to read label %d\n", l);
1936                         continue;
1937                 }
1938
1939                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1940                         (void) printf("failed to unpack label %d\n", l);
1941                         ashift = SPA_MINBLOCKSHIFT;
1942                 } else {
1943                         nvlist_t *vdev_tree = NULL;
1944
1945                         dump_nvlist(config, 4);
1946                         if ((nvlist_lookup_nvlist(config,
1947                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
1948                             (nvlist_lookup_uint64(vdev_tree,
1949                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
1950                                 ashift = SPA_MINBLOCKSHIFT;
1951                         nvlist_free(config);
1952                 }
1953                 if (dump_opt['u'])
1954                         dump_label_uberblocks(&label, ashift);
1955         }
1956
1957         free(path);
1958         (void) close(fd);
1959 }
1960
1961 /*ARGSUSED*/
1962 static int
1963 dump_one_dir(const char *dsname, void *arg)
1964 {
1965         int error;
1966         objset_t *os;
1967
1968         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
1969         if (error) {
1970                 (void) printf("Could not open %s, error %d\n", dsname, error);
1971                 return (0);
1972         }
1973         dump_dir(os);
1974         dmu_objset_disown(os, FTAG);
1975         fuid_table_destroy();
1976         sa_loaded = B_FALSE;
1977         return (0);
1978 }
1979
1980 /*
1981  * Block statistics.
1982  */
1983 typedef struct zdb_blkstats {
1984         uint64_t        zb_asize;
1985         uint64_t        zb_lsize;
1986         uint64_t        zb_psize;
1987         uint64_t        zb_count;
1988 } zdb_blkstats_t;
1989
1990 /*
1991  * Extended object types to report deferred frees and dedup auto-ditto blocks.
1992  */
1993 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
1994 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
1995 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
1996 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
1997
1998 static char *zdb_ot_extname[] = {
1999         "deferred free",
2000         "dedup ditto",
2001         "other",
2002         "Total",
2003 };
2004
2005 #define ZB_TOTAL        DN_MAX_LEVELS
2006
2007 typedef struct zdb_cb {
2008         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2009         uint64_t        zcb_dedup_asize;
2010         uint64_t        zcb_dedup_blocks;
2011         uint64_t        zcb_errors[256];
2012         int             zcb_readfails;
2013         int             zcb_haderrors;
2014         spa_t           *zcb_spa;
2015 } zdb_cb_t;
2016
2017 static void
2018 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2019     dmu_object_type_t type)
2020 {
2021         uint64_t refcnt = 0;
2022         int i;
2023
2024         ASSERT(type < ZDB_OT_TOTAL);
2025
2026         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2027                 return;
2028
2029         for (i = 0; i < 4; i++) {
2030                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2031                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2032                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2033
2034                 zb->zb_asize += BP_GET_ASIZE(bp);
2035                 zb->zb_lsize += BP_GET_LSIZE(bp);
2036                 zb->zb_psize += BP_GET_PSIZE(bp);
2037                 zb->zb_count++;
2038         }
2039
2040         if (dump_opt['L'])
2041                 return;
2042
2043         if (BP_GET_DEDUP(bp)) {
2044                 ddt_t *ddt;
2045                 ddt_entry_t *dde;
2046
2047                 ddt = ddt_select(zcb->zcb_spa, bp);
2048                 ddt_enter(ddt);
2049                 dde = ddt_lookup(ddt, bp, B_FALSE);
2050
2051                 if (dde == NULL) {
2052                         refcnt = 0;
2053                 } else {
2054                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2055                         ddt_phys_decref(ddp);
2056                         refcnt = ddp->ddp_refcnt;
2057                         if (ddt_phys_total_refcnt(dde) == 0)
2058                                 ddt_remove(ddt, dde);
2059                 }
2060                 ddt_exit(ddt);
2061         }
2062
2063         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2064             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2065             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2066 }
2067
2068 static void
2069 zdb_blkptr_done(zio_t *zio)
2070 {
2071         spa_t *spa = zio->io_spa;
2072         blkptr_t *bp = zio->io_bp;
2073         int ioerr = zio->io_error;
2074         zdb_cb_t *zcb = zio->io_private;
2075         zbookmark_t *zb = &zio->io_bookmark;
2076
2077         zio_data_buf_free(zio->io_data, zio->io_size);
2078
2079         mutex_enter(&spa->spa_scrub_lock);
2080         spa->spa_scrub_inflight--;
2081         cv_broadcast(&spa->spa_scrub_io_cv);
2082
2083         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2084                 char blkbuf[BP_SPRINTF_LEN];
2085
2086                 zcb->zcb_haderrors = 1;
2087                 zcb->zcb_errors[ioerr]++;
2088
2089                 if (dump_opt['b'] >= 2)
2090                         sprintf_blkptr(blkbuf, bp);
2091                 else
2092                         blkbuf[0] = '\0';
2093
2094                 (void) printf("zdb_blkptr_cb: "
2095                     "Got error %d reading "
2096                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2097                     ioerr,
2098                     (u_longlong_t)zb->zb_objset,
2099                     (u_longlong_t)zb->zb_object,
2100                     (u_longlong_t)zb->zb_level,
2101                     (u_longlong_t)zb->zb_blkid,
2102                     blkbuf);
2103         }
2104         mutex_exit(&spa->spa_scrub_lock);
2105 }
2106
2107 static int
2108 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2109     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2110 {
2111         zdb_cb_t *zcb = arg;
2112         char blkbuf[BP_SPRINTF_LEN];
2113         dmu_object_type_t type;
2114         boolean_t is_metadata;
2115
2116         if (bp == NULL)
2117                 return (0);
2118
2119         type = BP_GET_TYPE(bp);
2120
2121         zdb_count_block(zcb, zilog, bp,
2122             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2123
2124         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2125
2126         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2127                 size_t size = BP_GET_PSIZE(bp);
2128                 void *data = zio_data_buf_alloc(size);
2129                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2130
2131                 /* If it's an intent log block, failure is expected. */
2132                 if (zb->zb_level == ZB_ZIL_LEVEL)
2133                         flags |= ZIO_FLAG_SPECULATIVE;
2134
2135                 mutex_enter(&spa->spa_scrub_lock);
2136                 while (spa->spa_scrub_inflight > max_inflight)
2137                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2138                 spa->spa_scrub_inflight++;
2139                 mutex_exit(&spa->spa_scrub_lock);
2140
2141                 zio_nowait(zio_read(NULL, spa, bp, data, size,
2142                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2143
2144         }
2145
2146         zcb->zcb_readfails = 0;
2147
2148         if (dump_opt['b'] >= 4) {
2149                 sprintf_blkptr(blkbuf, bp);
2150                 (void) printf("objset %llu object %llu "
2151                     "level %lld offset 0x%llx %s\n",
2152                     (u_longlong_t)zb->zb_objset,
2153                     (u_longlong_t)zb->zb_object,
2154                     (longlong_t)zb->zb_level,
2155                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2156                     blkbuf);
2157         }
2158
2159         return (0);
2160 }
2161
2162 static void
2163 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
2164 {
2165         vdev_t *vd = sm->sm_ppd;
2166
2167         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2168             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2169 }
2170
2171 /* ARGSUSED */
2172 static void
2173 zdb_space_map_load(space_map_t *sm)
2174 {
2175 }
2176
2177 static void
2178 zdb_space_map_unload(space_map_t *sm)
2179 {
2180         space_map_vacate(sm, zdb_leak, sm);
2181 }
2182
2183 /* ARGSUSED */
2184 static void
2185 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
2186 {
2187 }
2188
2189 static space_map_ops_t zdb_space_map_ops = {
2190         zdb_space_map_load,
2191         zdb_space_map_unload,
2192         NULL,   /* alloc */
2193         zdb_space_map_claim,
2194         NULL,   /* free */
2195         NULL    /* maxsize */
2196 };
2197
2198 static void
2199 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2200 {
2201         ddt_bookmark_t ddb = { 0 };
2202         ddt_entry_t dde;
2203         int error;
2204         int p;
2205
2206         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2207                 blkptr_t blk;
2208                 ddt_phys_t *ddp = dde.dde_phys;
2209
2210                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2211                         return;
2212
2213                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2214
2215                 for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2216                         if (ddp->ddp_phys_birth == 0)
2217                                 continue;
2218                         ddt_bp_create(ddb.ddb_checksum,
2219                             &dde.dde_key, ddp, &blk);
2220                         if (p == DDT_PHYS_DITTO) {
2221                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2222                         } else {
2223                                 zcb->zcb_dedup_asize +=
2224                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2225                                 zcb->zcb_dedup_blocks++;
2226                         }
2227                 }
2228                 if (!dump_opt['L']) {
2229                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2230                         ddt_enter(ddt);
2231                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2232                         ddt_exit(ddt);
2233                 }
2234         }
2235
2236         ASSERT(error == ENOENT);
2237 }
2238
2239 static void
2240 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2241 {
2242         zcb->zcb_spa = spa;
2243         int c, m;
2244
2245         if (!dump_opt['L']) {
2246                 vdev_t *rvd = spa->spa_root_vdev;
2247                 for (c = 0; c < rvd->vdev_children; c++) {
2248                         vdev_t *vd = rvd->vdev_child[c];
2249                         for (m = 0; m < vd->vdev_ms_count; m++) {
2250                                 metaslab_t *msp = vd->vdev_ms[m];
2251                                 mutex_enter(&msp->ms_lock);
2252                                 space_map_unload(msp->ms_map);
2253                                 VERIFY(space_map_load(msp->ms_map,
2254                                     &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
2255                                     spa->spa_meta_objset) == 0);
2256                                 msp->ms_map->sm_ppd = vd;
2257                                 mutex_exit(&msp->ms_lock);
2258                         }
2259                 }
2260         }
2261
2262         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2263
2264         zdb_ddt_leak_init(spa, zcb);
2265
2266         spa_config_exit(spa, SCL_CONFIG, FTAG);
2267 }
2268
2269 static void
2270 zdb_leak_fini(spa_t *spa)
2271 {
2272         int c, m;
2273
2274         if (!dump_opt['L']) {
2275                 vdev_t *rvd = spa->spa_root_vdev;
2276                 for (c = 0; c < rvd->vdev_children; c++) {
2277                         vdev_t *vd = rvd->vdev_child[c];
2278                         for (m = 0; m < vd->vdev_ms_count; m++) {
2279                                 metaslab_t *msp = vd->vdev_ms[m];
2280                                 mutex_enter(&msp->ms_lock);
2281                                 space_map_unload(msp->ms_map);
2282                                 mutex_exit(&msp->ms_lock);
2283                         }
2284                 }
2285         }
2286 }
2287
2288 /* ARGSUSED */
2289 static int
2290 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2291 {
2292         zdb_cb_t *zcb = arg;
2293
2294         if (dump_opt['b'] >= 4) {
2295                 char blkbuf[BP_SPRINTF_LEN];
2296                 sprintf_blkptr(blkbuf, bp);
2297                 (void) printf("[%s] %s\n",
2298                     "deferred free", blkbuf);
2299         }
2300         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2301         return (0);
2302 }
2303
2304 static int
2305 dump_block_stats(spa_t *spa)
2306 {
2307         zdb_cb_t zcb;
2308         zdb_blkstats_t *zb, *tzb;
2309         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2310         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2311         int leaks = 0;
2312         int e;
2313
2314         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
2315             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2316             (dump_opt['c'] == 1) ? "metadata " : "",
2317             dump_opt['c'] ? "checksums " : "",
2318             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2319             !dump_opt['L'] ? "nothing leaked " : "");
2320
2321         /*
2322          * Load all space maps as SM_ALLOC maps, then traverse the pool
2323          * claiming each block we discover.  If the pool is perfectly
2324          * consistent, the space maps will be empty when we're done.
2325          * Anything left over is a leak; any block we can't claim (because
2326          * it's not part of any space map) is a double allocation,
2327          * reference to a freed block, or an unclaimed log block.
2328          */
2329         bzero(&zcb, sizeof(zdb_cb_t));
2330         zdb_leak_init(spa, &zcb);
2331
2332         /*
2333          * If there's a deferred-free bplist, process that first.
2334          */
2335         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2336             count_block_cb, &zcb, NULL);
2337         (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2338             count_block_cb, &zcb, NULL);
2339         if (spa_feature_is_active(spa,
2340             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2341                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2342                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2343                     &zcb, NULL));
2344         }
2345
2346         if (dump_opt['c'] > 1)
2347                 flags |= TRAVERSE_PREFETCH_DATA;
2348
2349         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2350
2351         /*
2352          * If we've traversed the data blocks then we need to wait for those
2353          * I/Os to complete. We leverage "The Godfather" zio to wait on
2354          * all async I/Os to complete.
2355          */
2356         if (dump_opt['c']) {
2357                 (void) zio_wait(spa->spa_async_zio_root);
2358                 spa->spa_async_zio_root = zio_root(spa, NULL, NULL,
2359                     ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2360                     ZIO_FLAG_GODFATHER);
2361         }
2362
2363         if (zcb.zcb_haderrors) {
2364                 (void) printf("\nError counts:\n\n");
2365                 (void) printf("\t%5s  %s\n", "errno", "count");
2366                 for (e = 0; e < 256; e++) {
2367                         if (zcb.zcb_errors[e] != 0) {
2368                                 (void) printf("\t%5d  %llu\n",
2369                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2370                         }
2371                 }
2372         }
2373
2374         /*
2375          * Report any leaked segments.
2376          */
2377         zdb_leak_fini(spa);
2378
2379         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2380
2381         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2382         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2383
2384         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2385         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2386
2387         if (total_found == total_alloc) {
2388                 if (!dump_opt['L'])
2389                         (void) printf("\n\tNo leaks (block sum matches space"
2390                             " maps exactly)\n");
2391         } else {
2392                 (void) printf("block traversal size %llu != alloc %llu "
2393                     "(%s %lld)\n",
2394                     (u_longlong_t)total_found,
2395                     (u_longlong_t)total_alloc,
2396                     (dump_opt['L']) ? "unreachable" : "leaked",
2397                     (longlong_t)(total_alloc - total_found));
2398                 leaks = 1;
2399         }
2400
2401         if (tzb->zb_count == 0)
2402                 return (2);
2403
2404         (void) printf("\n");
2405         (void) printf("\tbp count:      %10llu\n",
2406             (u_longlong_t)tzb->zb_count);
2407         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2408             (u_longlong_t)tzb->zb_lsize,
2409             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2410         (void) printf("\tbp physical:   %10llu      avg:"
2411             " %6llu     compression: %6.2f\n",
2412             (u_longlong_t)tzb->zb_psize,
2413             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2414             (double)tzb->zb_lsize / tzb->zb_psize);
2415         (void) printf("\tbp allocated:  %10llu      avg:"
2416             " %6llu     compression: %6.2f\n",
2417             (u_longlong_t)tzb->zb_asize,
2418             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2419             (double)tzb->zb_lsize / tzb->zb_asize);
2420         (void) printf("\tbp deduped:    %10llu    ref>1:"
2421             " %6llu   deduplication: %6.2f\n",
2422             (u_longlong_t)zcb.zcb_dedup_asize,
2423             (u_longlong_t)zcb.zcb_dedup_blocks,
2424             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2425         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2426             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2427
2428         if (dump_opt['b'] >= 2) {
2429                 int l, t, level;
2430                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2431                     "\t  avg\t comp\t%%Total\tType\n");
2432
2433                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2434                         char csize[32], lsize[32], psize[32], asize[32];
2435                         char avg[32];
2436                         char *typename;
2437
2438                         if (t < DMU_OT_NUMTYPES)
2439                                 typename = dmu_ot[t].ot_name;
2440                         else
2441                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2442
2443                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2444                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2445                                     "\t%5s\t%5s\t%6s\t%s\n",
2446                                     "-",
2447                                     "-",
2448                                     "-",
2449                                     "-",
2450                                     "-",
2451                                     "-",
2452                                     "-",
2453                                     typename);
2454                                 continue;
2455                         }
2456
2457                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2458                                 level = (l == -1 ? ZB_TOTAL : l);
2459                                 zb = &zcb.zcb_type[level][t];
2460
2461                                 if (zb->zb_asize == 0)
2462                                         continue;
2463
2464                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2465                                         continue;
2466
2467                                 if (level == 0 && zb->zb_asize ==
2468                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2469                                         continue;
2470
2471                                 zdb_nicenum(zb->zb_count, csize);
2472                                 zdb_nicenum(zb->zb_lsize, lsize);
2473                                 zdb_nicenum(zb->zb_psize, psize);
2474                                 zdb_nicenum(zb->zb_asize, asize);
2475                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2476
2477                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2478                                     "\t%5.2f\t%6.2f\t",
2479                                     csize, lsize, psize, asize, avg,
2480                                     (double)zb->zb_lsize / zb->zb_psize,
2481                                     100.0 * zb->zb_asize / tzb->zb_asize);
2482
2483                                 if (level == ZB_TOTAL)
2484                                         (void) printf("%s\n", typename);
2485                                 else
2486                                         (void) printf("    L%d %s\n",
2487                                             level, typename);
2488                         }
2489                 }
2490         }
2491
2492         (void) printf("\n");
2493
2494         if (leaks)
2495                 return (2);
2496
2497         if (zcb.zcb_haderrors)
2498                 return (3);
2499
2500         return (0);
2501 }
2502
2503 typedef struct zdb_ddt_entry {
2504         ddt_key_t       zdde_key;
2505         uint64_t        zdde_ref_blocks;
2506         uint64_t        zdde_ref_lsize;
2507         uint64_t        zdde_ref_psize;
2508         uint64_t        zdde_ref_dsize;
2509         avl_node_t      zdde_node;
2510 } zdb_ddt_entry_t;
2511
2512 /* ARGSUSED */
2513 static int
2514 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2515     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2516 {
2517         avl_tree_t *t = arg;
2518         avl_index_t where;
2519         zdb_ddt_entry_t *zdde, zdde_search;
2520
2521         if (bp == NULL)
2522                 return (0);
2523
2524         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2525                 (void) printf("traversing objset %llu, %llu objects, "
2526                     "%lu blocks so far\n",
2527                     (u_longlong_t)zb->zb_objset,
2528                     (u_longlong_t)bp->blk_fill,
2529                     avl_numnodes(t));
2530         }
2531
2532         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2533             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2534                 return (0);
2535
2536         ddt_key_fill(&zdde_search.zdde_key, bp);
2537
2538         zdde = avl_find(t, &zdde_search, &where);
2539
2540         if (zdde == NULL) {
2541                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2542                 zdde->zdde_key = zdde_search.zdde_key;
2543                 avl_insert(t, zdde, where);
2544         }
2545
2546         zdde->zdde_ref_blocks += 1;
2547         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2548         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2549         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2550
2551         return (0);
2552 }
2553
2554 static void
2555 dump_simulated_ddt(spa_t *spa)
2556 {
2557         avl_tree_t t;
2558         void *cookie = NULL;
2559         zdb_ddt_entry_t *zdde;
2560         ddt_histogram_t ddh_total;
2561         ddt_stat_t dds_total;
2562
2563         bzero(&ddh_total, sizeof (ddt_histogram_t));
2564         bzero(&dds_total, sizeof (ddt_stat_t));
2565
2566         avl_create(&t, ddt_entry_compare,
2567             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2568
2569         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2570
2571         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2572             zdb_ddt_add_cb, &t);
2573
2574         spa_config_exit(spa, SCL_CONFIG, FTAG);
2575
2576         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2577                 ddt_stat_t dds;
2578                 uint64_t refcnt = zdde->zdde_ref_blocks;
2579                 ASSERT(refcnt != 0);
2580
2581                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2582                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2583                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2584                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2585
2586                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2587                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2588                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2589                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2590
2591                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2592
2593                 umem_free(zdde, sizeof (*zdde));
2594         }
2595
2596         avl_destroy(&t);
2597
2598         ddt_histogram_stat(&dds_total, &ddh_total);
2599
2600         (void) printf("Simulated DDT histogram:\n");
2601
2602         zpool_dump_ddt(&dds_total, &ddh_total);
2603
2604         dump_dedup_ratio(&dds_total);
2605 }
2606
2607 static void
2608 dump_zpool(spa_t *spa)
2609 {
2610         dsl_pool_t *dp = spa_get_dsl(spa);
2611         int rc = 0;
2612
2613         if (dump_opt['S']) {
2614                 dump_simulated_ddt(spa);
2615                 return;
2616         }
2617
2618         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2619                 (void) printf("\nCached configuration:\n");
2620                 dump_nvlist(spa->spa_config, 8);
2621         }
2622
2623         if (dump_opt['C'])
2624                 dump_config(spa);
2625
2626         if (dump_opt['u'])
2627                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2628
2629         if (dump_opt['D'])
2630                 dump_all_ddts(spa);
2631
2632         if (dump_opt['d'] > 2 || dump_opt['m'])
2633                 dump_metaslabs(spa);
2634
2635         if (dump_opt['d'] || dump_opt['i']) {
2636                 dump_dir(dp->dp_meta_objset);
2637                 if (dump_opt['d'] >= 3) {
2638                         dump_bpobj(&spa->spa_deferred_bpobj, "Deferred frees");
2639                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2640                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2641                                     "Pool snapshot frees");
2642                         }
2643
2644                         if (spa_feature_is_active(spa,
2645                             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
2646                                 dump_bptree(spa->spa_meta_objset,
2647                                     spa->spa_dsl_pool->dp_bptree_obj,
2648                                     "Pool dataset frees");
2649                         }
2650                         dump_dtl(spa->spa_root_vdev, 0);
2651                 }
2652                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2653                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2654         }
2655         if (dump_opt['b'] || dump_opt['c'])
2656                 rc = dump_block_stats(spa);
2657
2658         if (dump_opt['s'])
2659                 show_pool_stats(spa);
2660
2661         if (dump_opt['h'])
2662                 dump_history(spa);
2663
2664         if (rc != 0)
2665                 exit(rc);
2666 }
2667
2668 #define ZDB_FLAG_CHECKSUM       0x0001
2669 #define ZDB_FLAG_DECOMPRESS     0x0002
2670 #define ZDB_FLAG_BSWAP          0x0004
2671 #define ZDB_FLAG_GBH            0x0008
2672 #define ZDB_FLAG_INDIRECT       0x0010
2673 #define ZDB_FLAG_PHYS           0x0020
2674 #define ZDB_FLAG_RAW            0x0040
2675 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2676
2677 int flagbits[256];
2678
2679 static void
2680 zdb_print_blkptr(blkptr_t *bp, int flags)
2681 {
2682         char blkbuf[BP_SPRINTF_LEN];
2683
2684         if (flags & ZDB_FLAG_BSWAP)
2685                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2686
2687         sprintf_blkptr(blkbuf, bp);
2688         (void) printf("%s\n", blkbuf);
2689 }
2690
2691 static void
2692 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2693 {
2694         int i;
2695
2696         for (i = 0; i < nbps; i++)
2697                 zdb_print_blkptr(&bp[i], flags);
2698 }
2699
2700 static void
2701 zdb_dump_gbh(void *buf, int flags)
2702 {
2703         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2704 }
2705
2706 static void
2707 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2708 {
2709         if (flags & ZDB_FLAG_BSWAP)
2710                 byteswap_uint64_array(buf, size);
2711         VERIFY(write(fileno(stdout), buf, size) == size);
2712 }
2713
2714 static void
2715 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2716 {
2717         uint64_t *d = (uint64_t *)buf;
2718         int nwords = size / sizeof (uint64_t);
2719         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2720         int i, j;
2721         char *hdr, *c;
2722
2723
2724         if (do_bswap)
2725                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2726         else
2727                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2728
2729         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2730
2731         for (i = 0; i < nwords; i += 2) {
2732                 (void) printf("%06llx:  %016llx  %016llx  ",
2733                     (u_longlong_t)(i * sizeof (uint64_t)),
2734                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2735                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2736
2737                 c = (char *)&d[i];
2738                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2739                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2740                 (void) printf("\n");
2741         }
2742 }
2743
2744 /*
2745  * There are two acceptable formats:
2746  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2747  *      child[.child]*    - For example: 0.1.1
2748  *
2749  * The second form can be used to specify arbitrary vdevs anywhere
2750  * in the heirarchy.  For example, in a pool with a mirror of
2751  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2752  */
2753 static vdev_t *
2754 zdb_vdev_lookup(vdev_t *vdev, char *path)
2755 {
2756         char *s, *p, *q;
2757         int i;
2758
2759         if (vdev == NULL)
2760                 return (NULL);
2761
2762         /* First, assume the x.x.x.x format */
2763         i = (int)strtoul(path, &s, 10);
2764         if (s == path || (s && *s != '.' && *s != '\0'))
2765                 goto name;
2766         if (i < 0 || i >= vdev->vdev_children)
2767                 return (NULL);
2768
2769         vdev = vdev->vdev_child[i];
2770         if (*s == '\0')
2771                 return (vdev);
2772         return (zdb_vdev_lookup(vdev, s+1));
2773
2774 name:
2775         for (i = 0; i < vdev->vdev_children; i++) {
2776                 vdev_t *vc = vdev->vdev_child[i];
2777
2778                 if (vc->vdev_path == NULL) {
2779                         vc = zdb_vdev_lookup(vc, path);
2780                         if (vc == NULL)
2781                                 continue;
2782                         else
2783                                 return (vc);
2784                 }
2785
2786                 p = strrchr(vc->vdev_path, '/');
2787                 p = p ? p + 1 : vc->vdev_path;
2788                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2789
2790                 if (strcmp(vc->vdev_path, path) == 0)
2791                         return (vc);
2792                 if (strcmp(p, path) == 0)
2793                         return (vc);
2794                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2795                         return (vc);
2796         }
2797
2798         return (NULL);
2799 }
2800
2801 /*
2802  * Read a block from a pool and print it out.  The syntax of the
2803  * block descriptor is:
2804  *
2805  *      pool:vdev_specifier:offset:size[:flags]
2806  *
2807  *      pool           - The name of the pool you wish to read from
2808  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2809  *      offset         - offset, in hex, in bytes
2810  *      size           - Amount of data to read, in hex, in bytes
2811  *      flags          - A string of characters specifying options
2812  *               b: Decode a blkptr at given offset within block
2813  *              *c: Calculate and display checksums
2814  *               d: Decompress data before dumping
2815  *               e: Byteswap data before dumping
2816  *               g: Display data as a gang block header
2817  *               i: Display as an indirect block
2818  *               p: Do I/O to physical offset
2819  *               r: Dump raw data to stdout
2820  *
2821  *              * = not yet implemented
2822  */
2823 static void
2824 zdb_read_block(char *thing, spa_t *spa)
2825 {
2826         blkptr_t blk, *bp = &blk;
2827         dva_t *dva = bp->blk_dva;
2828         int flags = 0;
2829         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2830         zio_t *zio;
2831         vdev_t *vd;
2832         void *pbuf, *lbuf, *buf;
2833         char *s, *p, *dup, *vdev, *flagstr;
2834         int i, error;
2835
2836         dup = strdup(thing);
2837         s = strtok(dup, ":");
2838         vdev = s ? s : "";
2839         s = strtok(NULL, ":");
2840         offset = strtoull(s ? s : "", NULL, 16);
2841         s = strtok(NULL, ":");
2842         size = strtoull(s ? s : "", NULL, 16);
2843         s = strtok(NULL, ":");
2844         flagstr = s ? s : "";
2845
2846         s = NULL;
2847         if (size == 0)
2848                 s = "size must not be zero";
2849         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2850                 s = "size must be a multiple of sector size";
2851         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2852                 s = "offset must be a multiple of sector size";
2853         if (s) {
2854                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2855                 free(dup);
2856                 return;
2857         }
2858
2859         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2860                 for (i = 0; flagstr[i]; i++) {
2861                         int bit = flagbits[(uchar_t)flagstr[i]];
2862
2863                         if (bit == 0) {
2864                                 (void) printf("***Invalid flag: %c\n",
2865                                     flagstr[i]);
2866                                 continue;
2867                         }
2868                         flags |= bit;
2869
2870                         /* If it's not something with an argument, keep going */
2871                         if ((bit & (ZDB_FLAG_CHECKSUM |
2872                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2873                                 continue;
2874
2875                         p = &flagstr[i + 1];
2876                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2877                                 blkptr_offset = strtoull(p, &p, 16);
2878                         if (*p != ':' && *p != '\0') {
2879                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2880                                 free(dup);
2881                                 return;
2882                         }
2883                 }
2884         }
2885
2886         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2887         if (vd == NULL) {
2888                 (void) printf("***Invalid vdev: %s\n", vdev);
2889                 free(dup);
2890                 return;
2891         } else {
2892                 if (vd->vdev_path)
2893                         (void) fprintf(stderr, "Found vdev: %s\n",
2894                             vd->vdev_path);
2895                 else
2896                         (void) fprintf(stderr, "Found vdev type: %s\n",
2897                             vd->vdev_ops->vdev_op_type);
2898         }
2899
2900         psize = size;
2901         lsize = size;
2902
2903         pbuf = umem_alloc_aligned(SPA_MAXBLOCKSIZE, 512, UMEM_NOFAIL);
2904         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2905
2906         BP_ZERO(bp);
2907
2908         DVA_SET_VDEV(&dva[0], vd->vdev_id);
2909         DVA_SET_OFFSET(&dva[0], offset);
2910         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
2911         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
2912
2913         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
2914
2915         BP_SET_LSIZE(bp, lsize);
2916         BP_SET_PSIZE(bp, psize);
2917         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
2918         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
2919         BP_SET_TYPE(bp, DMU_OT_NONE);
2920         BP_SET_LEVEL(bp, 0);
2921         BP_SET_DEDUP(bp, 0);
2922         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
2923
2924         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2925         zio = zio_root(spa, NULL, NULL, 0);
2926
2927         if (vd == vd->vdev_top) {
2928                 /*
2929                  * Treat this as a normal block read.
2930                  */
2931                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
2932                     ZIO_PRIORITY_SYNC_READ,
2933                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
2934         } else {
2935                 /*
2936                  * Treat this as a vdev child I/O.
2937                  */
2938                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
2939                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
2940                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2941                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
2942                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
2943         }
2944
2945         error = zio_wait(zio);
2946         spa_config_exit(spa, SCL_STATE, FTAG);
2947
2948         if (error) {
2949                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2950                 goto out;
2951         }
2952
2953         if (flags & ZDB_FLAG_DECOMPRESS) {
2954                 /*
2955                  * We don't know how the data was compressed, so just try
2956                  * every decompress function at every inflated blocksize.
2957                  */
2958                 enum zio_compress c;
2959                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2960                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
2961
2962                 bcopy(pbuf, pbuf2, psize);
2963
2964                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
2965                     SPA_MAXBLOCKSIZE - psize) == 0);
2966
2967                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
2968                     SPA_MAXBLOCKSIZE - psize) == 0);
2969
2970                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
2971                     lsize -= SPA_MINBLOCKSIZE) {
2972                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
2973                                 if (zio_decompress_data(c, pbuf, lbuf,
2974                                     psize, lsize) == 0 &&
2975                                     zio_decompress_data(c, pbuf2, lbuf2,
2976                                     psize, lsize) == 0 &&
2977                                     bcmp(lbuf, lbuf2, lsize) == 0)
2978                                         break;
2979                         }
2980                         if (c != ZIO_COMPRESS_FUNCTIONS)
2981                                 break;
2982                         lsize -= SPA_MINBLOCKSIZE;
2983                 }
2984
2985                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
2986                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
2987
2988                 if (lsize <= psize) {
2989                         (void) printf("Decompress of %s failed\n", thing);
2990                         goto out;
2991                 }
2992                 buf = lbuf;
2993                 size = lsize;
2994         } else {
2995                 buf = pbuf;
2996                 size = psize;
2997         }
2998
2999         if (flags & ZDB_FLAG_PRINT_BLKPTR)
3000                 zdb_print_blkptr((blkptr_t *)(void *)
3001                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3002         else if (flags & ZDB_FLAG_RAW)
3003                 zdb_dump_block_raw(buf, size, flags);
3004         else if (flags & ZDB_FLAG_INDIRECT)
3005                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3006                     flags);
3007         else if (flags & ZDB_FLAG_GBH)
3008                 zdb_dump_gbh(buf, flags);
3009         else
3010                 zdb_dump_block(thing, buf, size, flags);
3011
3012 out:
3013         umem_free(pbuf, SPA_MAXBLOCKSIZE);
3014         umem_free(lbuf, SPA_MAXBLOCKSIZE);
3015         free(dup);
3016 }
3017
3018 static boolean_t
3019 pool_match(nvlist_t *cfg, char *tgt)
3020 {
3021         uint64_t v, guid = strtoull(tgt, NULL, 0);
3022         char *s;
3023
3024         if (guid != 0) {
3025                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3026                         return (v == guid);
3027         } else {
3028                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3029                         return (strcmp(s, tgt) == 0);
3030         }
3031         return (B_FALSE);
3032 }
3033
3034 static char *
3035 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3036 {
3037         nvlist_t *pools;
3038         nvlist_t *match = NULL;
3039         char *name = NULL;
3040         char *sepp = NULL;
3041         char sep = 0;
3042         int count = 0;
3043         importargs_t args = { 0 };
3044
3045         args.paths = dirc;
3046         args.path = dirv;
3047         args.can_be_active = B_TRUE;
3048
3049         if ((sepp = strpbrk(*target, "/@")) != NULL) {
3050                 sep = *sepp;
3051                 *sepp = '\0';
3052         }
3053
3054         pools = zpool_search_import(g_zfs, &args);
3055
3056         if (pools != NULL) {
3057                 nvpair_t *elem = NULL;
3058                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3059                         verify(nvpair_value_nvlist(elem, configp) == 0);
3060                         if (pool_match(*configp, *target)) {
3061                                 count++;
3062                                 if (match != NULL) {
3063                                         /* print previously found config */
3064                                         if (name != NULL) {
3065                                                 (void) printf("%s\n", name);
3066                                                 dump_nvlist(match, 8);
3067                                                 name = NULL;
3068                                         }
3069                                         (void) printf("%s\n",
3070                                             nvpair_name(elem));
3071                                         dump_nvlist(*configp, 8);
3072                                 } else {
3073                                         match = *configp;
3074                                         name = nvpair_name(elem);
3075                                 }
3076                         }
3077                 }
3078         }
3079         if (count > 1)
3080                 (void) fatal("\tMatched %d pools - use pool GUID "
3081                     "instead of pool name or \n"
3082                     "\tpool name part of a dataset name to select pool", count);
3083
3084         if (sepp)
3085                 *sepp = sep;
3086         /*
3087          * If pool GUID was specified for pool id, replace it with pool name
3088          */
3089         if (name && (strstr(*target, name) != *target)) {
3090                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3091
3092                 *target = umem_alloc(sz, UMEM_NOFAIL);
3093                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3094         }
3095
3096         *configp = name ? match : NULL;
3097
3098         return (name);
3099 }
3100
3101 int
3102 main(int argc, char **argv)
3103 {
3104         int i, c;
3105         struct rlimit rl = { 1024, 1024 };
3106         spa_t *spa = NULL;
3107         objset_t *os = NULL;
3108         int dump_all = 1;
3109         int verbose = 0;
3110         int error = 0;
3111         char **searchdirs = NULL;
3112         int nsearch = 0;
3113         char *target;
3114         nvlist_t *policy = NULL;
3115         uint64_t max_txg = UINT64_MAX;
3116         int rewind = ZPOOL_NEVER_REWIND;
3117         char *spa_config_path_env;
3118
3119         (void) setrlimit(RLIMIT_NOFILE, &rl);
3120         (void) enable_extended_FILE_stdio(-1, -1);
3121
3122         dprintf_setup(&argc, argv);
3123
3124         /*
3125          * If there is an environment variable SPA_CONFIG_PATH it overrides
3126          * default spa_config_path setting. If -U flag is specified it will
3127          * override this environment variable settings once again.
3128          */
3129         spa_config_path_env = getenv("SPA_CONFIG_PATH");
3130         if (spa_config_path_env != NULL)
3131                 spa_config_path = spa_config_path_env;
3132
3133         while ((c = getopt(argc, argv, "bcdhilmM:suCDRSAFLXevp:t:U:P")) != -1) {
3134                 switch (c) {
3135                 case 'b':
3136                 case 'c':
3137                 case 'd':
3138                 case 'h':
3139                 case 'i':
3140                 case 'l':
3141                 case 'm':
3142                 case 's':
3143                 case 'u':
3144                 case 'C':
3145                 case 'D':
3146                 case 'R':
3147                 case 'S':
3148                         dump_opt[c]++;
3149                         dump_all = 0;
3150                         break;
3151                 case 'A':
3152                 case 'F':
3153                 case 'L':
3154                 case 'X':
3155                 case 'e':
3156                 case 'P':
3157                         dump_opt[c]++;
3158                         break;
3159                 case 'v':
3160                         verbose++;
3161                         break;
3162                 case 'M':
3163                         max_inflight = strtoull(optarg, NULL, 0);
3164                         if (max_inflight == 0) {
3165                                 (void) fprintf(stderr, "maximum number "
3166                                     "of inflight I/Os must be greater "
3167                                     "than 0\n");
3168                                 usage();
3169                         }
3170                         break;
3171                 case 'p':
3172                         if (searchdirs == NULL) {
3173                                 searchdirs = umem_alloc(sizeof (char *),
3174                                     UMEM_NOFAIL);
3175                         } else {
3176                                 char **tmp = umem_alloc((nsearch + 1) *
3177                                     sizeof (char *), UMEM_NOFAIL);
3178                                 bcopy(searchdirs, tmp, nsearch *
3179                                     sizeof (char *));
3180                                 umem_free(searchdirs,
3181                                     nsearch * sizeof (char *));
3182                                 searchdirs = tmp;
3183                         }
3184                         searchdirs[nsearch++] = optarg;
3185                         break;
3186                 case 't':
3187                         max_txg = strtoull(optarg, NULL, 0);
3188                         if (max_txg < TXG_INITIAL) {
3189                                 (void) fprintf(stderr, "incorrect txg "
3190                                     "specified: %s\n", optarg);
3191                                 usage();
3192                         }
3193                         break;
3194                 case 'U':
3195                         spa_config_path = optarg;
3196                         break;
3197                 default:
3198                         usage();
3199                         break;
3200                 }
3201         }
3202
3203         if (!dump_opt['e'] && searchdirs != NULL) {
3204                 (void) fprintf(stderr, "-p option requires use of -e\n");
3205                 usage();
3206         }
3207
3208         kernel_init(FREAD);
3209         if ((g_zfs = libzfs_init()) == NULL)
3210                 return (1);
3211
3212         if (dump_all)
3213                 verbose = MAX(verbose, 1);
3214
3215         for (c = 0; c < 256; c++) {
3216                 if (dump_all && !strchr("elAFLRSXP", c))
3217                         dump_opt[c] = 1;
3218                 if (dump_opt[c])
3219                         dump_opt[c] += verbose;
3220         }
3221
3222         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3223         zfs_recover = (dump_opt['A'] > 1);
3224
3225         argc -= optind;
3226         argv += optind;
3227
3228         if (argc < 2 && dump_opt['R'])
3229                 usage();
3230         if (argc < 1) {
3231                 if (!dump_opt['e'] && dump_opt['C']) {
3232                         dump_cachefile(spa_config_path);
3233                         return (0);
3234                 }
3235                 usage();
3236         }
3237
3238         if (dump_opt['l']) {
3239                 dump_label(argv[0]);
3240                 return (0);
3241         }
3242
3243         if (dump_opt['X'] || dump_opt['F'])
3244                 rewind = ZPOOL_DO_REWIND |
3245                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3246
3247         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3248             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3249             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3250                 fatal("internal error: %s", strerror(ENOMEM));
3251
3252         error = 0;
3253         target = argv[0];
3254
3255         if (dump_opt['e']) {
3256                 nvlist_t *cfg = NULL;
3257                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3258
3259                 error = ENOENT;
3260                 if (name) {
3261                         if (dump_opt['C'] > 1) {
3262                                 (void) printf("\nConfiguration for import:\n");
3263                                 dump_nvlist(cfg, 8);
3264                         }
3265                         if (nvlist_add_nvlist(cfg,
3266                             ZPOOL_REWIND_POLICY, policy) != 0) {
3267                                 fatal("can't open '%s': %s",
3268                                     target, strerror(ENOMEM));
3269                         }
3270                         if ((error = spa_import(name, cfg, NULL,
3271                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3272                                 error = spa_import(name, cfg, NULL,
3273                                     ZFS_IMPORT_VERBATIM);
3274                         }
3275                 }
3276         }
3277
3278         if (error == 0) {
3279                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3280                         error = spa_open_rewind(target, &spa, FTAG, policy,
3281                             NULL);
3282                         if (error) {
3283                                 /*
3284                                  * If we're missing the log device then
3285                                  * try opening the pool after clearing the
3286                                  * log state.
3287                                  */
3288                                 mutex_enter(&spa_namespace_lock);
3289                                 if ((spa = spa_lookup(target)) != NULL &&
3290                                     spa->spa_log_state == SPA_LOG_MISSING) {
3291                                         spa->spa_log_state = SPA_LOG_CLEAR;
3292                                         error = 0;
3293                                 }
3294                                 mutex_exit(&spa_namespace_lock);
3295
3296                                 if (!error) {
3297                                         error = spa_open_rewind(target, &spa,
3298                                             FTAG, policy, NULL);
3299                                 }
3300                         }
3301                 } else {
3302                         error = dmu_objset_own(target, DMU_OST_ANY,
3303                             B_TRUE, FTAG, &os);
3304                 }
3305         }
3306         nvlist_free(policy);
3307
3308         if (error)
3309                 fatal("can't open '%s': %s", target, strerror(error));
3310
3311         argv++;
3312         argc--;
3313         if (!dump_opt['R']) {
3314                 if (argc > 0) {
3315                         zopt_objects = argc;
3316                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3317                         for (i = 0; i < zopt_objects; i++) {
3318                                 errno = 0;
3319                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3320                                 if (zopt_object[i] == 0 && errno != 0)
3321                                         fatal("bad number %s: %s",
3322                                             argv[i], strerror(errno));
3323                         }
3324                 }
3325                 if (os != NULL) {
3326                         dump_dir(os);
3327                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3328                         dump_dir(spa->spa_meta_objset);
3329                 } else {
3330                         dump_zpool(spa);
3331                 }
3332         } else {
3333                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3334                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3335                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3336                 flagbits['e'] = ZDB_FLAG_BSWAP;
3337                 flagbits['g'] = ZDB_FLAG_GBH;
3338                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3339                 flagbits['p'] = ZDB_FLAG_PHYS;
3340                 flagbits['r'] = ZDB_FLAG_RAW;
3341
3342                 for (i = 0; i < argc; i++)
3343                         zdb_read_block(argv[i], spa);
3344         }
3345
3346         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3347
3348         fuid_table_destroy();
3349         sa_loaded = B_FALSE;
3350
3351         libzfs_fini(g_zfs);
3352         kernel_fini();
3353
3354         return (0);
3355 }