zfs/zcmd/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  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "@(#)zdb.c      1.40    08/04/01 SMI"
  27
  28 #include <stdio.h>
  29 #include <stdio_ext.h>
  30 #include <stdlib.h>
  31 #include <ctype.h>
  32 #include <sys/zfs_context.h>
  33 #include <sys/spa.h>
  34 #include <sys/spa_impl.h>
  35 #include <sys/dmu.h>
  36 #include <sys/zap.h>
  37 #include <sys/fs/zfs.h>
  38 #include <sys/zfs_znode.h>
  39 #include <sys/vdev.h>
  40 #include <sys/vdev_impl.h>
  41 #include <sys/metaslab_impl.h>
  42 #include <sys/dmu_objset.h>
  43 #include <sys/dsl_dir.h>
  44 #include <sys/dsl_dataset.h>
  45 #include <sys/dsl_pool.h>
  46 #include <sys/dbuf.h>
  47 #include <sys/zil.h>
  48 #include <sys/zil_impl.h>
  49 #include <sys/stat.h>
  50 #include <sys/resource.h>
  51 #include <sys/dmu_traverse.h>
  52 #include <sys/zio_checksum.h>
  53 #include <sys/zio_compress.h>
  54 #include <sys/zfs_fuid.h>
  55 #undef ZFS_MAXNAMELEN
  56 #undef verify
  57 #include <libzfs.h>
  58
  59 const char cmdname[] = "zdb";
  60 uint8_t dump_opt[256];
  61
  62 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  63
  64 extern void dump_intent_log(zilog_t *);
  65 uint64_t *zopt_object = NULL;
  66 int zopt_objects = 0;
  67 int zdb_advance = ADVANCE_PRE;
  68 zbookmark_t zdb_noread = { 0, 0, ZB_NO_LEVEL, 0 };
  69 libzfs_handle_t *g_zfs;
  70 boolean_t zdb_sig_user_data = B_TRUE;
  71 int zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
  72
  73 /*
  74  * These libumem hooks provide a reasonable set of defaults for the allocator's
  75  * debugging facilities.
  76  */
  77 const char *
  78 _umem_debug_init()
  79 {
  80         return ("default,verbose"); /* $UMEM_DEBUG setting */
  81 }
  82
  83 const char *
  84 _umem_logging_init(void)
  85 {
  86         return ("fail,contents"); /* $UMEM_LOGGING setting */
  87 }
  88
  89 static void
  90 usage(void)
  91 {
  92         (void) fprintf(stderr,
  93             "Usage: %s [-udibcsvL] [-U cachefile_path] [-O order] "
  94             "[-B os:obj:level:blkid] [-S user:cksumalg] "
  95             "dataset [object...]\n"
  96             "       %s -C [pool]\n"
  97             "       %s -l dev\n"
  98             "       %s -R pool:vdev:offset:size:flags\n"
  99             "       %s [-p path_to_vdev_dir]\n"
 100             "       %s -e pool | GUID | devid ...\n",
 101             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 102
 103         (void) fprintf(stderr, "        -u uberblock\n");
 104         (void) fprintf(stderr, "        -d datasets\n");
 105         (void) fprintf(stderr, "        -C cached pool configuration\n");
 106         (void) fprintf(stderr, "        -i intent logs\n");
 107         (void) fprintf(stderr, "        -b block statistics\n");
 108         (void) fprintf(stderr, "        -c checksum all data blocks\n");
 109         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 110         (void) fprintf(stderr, "        -S <user|all>:<cksum_alg|all> -- "
 111             "dump blkptr signatures\n");
 112         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 113         (void) fprintf(stderr, "        -l dump label contents\n");
 114         (void) fprintf(stderr, "        -L live pool (allows some errors)\n");
 115         (void) fprintf(stderr, "        -O [!]<pre|post|prune|data|holes> "
 116             "visitation order\n");
 117         (void) fprintf(stderr, "        -U cachefile_path -- use alternate "
 118             "cachefile\n");
 119         (void) fprintf(stderr, "        -B objset:object:level:blkid -- "
 120             "simulate bad block\n");
 121         (void) fprintf(stderr, "        -R read and display block from a "
 122             "device\n");
 123         (void) fprintf(stderr, "        -e Pool is exported/destroyed/"
 124             "has altroot\n");
 125         (void) fprintf(stderr, "        -p <Path to vdev dir> (use with -e)\n");
 126         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 127             "to make only that option verbose\n");
 128         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 129         exit(1);
 130 }
 131
 132 static void
 133 fatal(const char *fmt, ...)
 134 {
 135         va_list ap;
 136
 137         va_start(ap, fmt);
 138         (void) fprintf(stderr, "%s: ", cmdname);
 139         (void) vfprintf(stderr, fmt, ap);
 140         va_end(ap);
 141         (void) fprintf(stderr, "\n");
 142
 143         exit(1);
 144 }
 145
 146 static void
 147 dump_nvlist(nvlist_t *list, int indent)
 148 {
 149         nvpair_t *elem = NULL;
 150
 151         while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
 152                 switch (nvpair_type(elem)) {
 153                 case DATA_TYPE_STRING:
 154                         {
 155                                 char *value;
 156
 157                                 VERIFY(nvpair_value_string(elem, &value) == 0);
 158                                 (void) printf("%*s%s='%s'\n", indent, "",
 159                                     nvpair_name(elem), value);
 160                         }
 161                         break;
 162
 163                 case DATA_TYPE_UINT64:
 164                         {
 165                                 uint64_t value;
 166
 167                                 VERIFY(nvpair_value_uint64(elem, &value) == 0);
 168                                 (void) printf("%*s%s=%llu\n", indent, "",
 169                                     nvpair_name(elem), (u_longlong_t)value);
 170                         }
 171                         break;
 172
 173                 case DATA_TYPE_NVLIST:
 174                         {
 175                                 nvlist_t *value;
 176
 177                                 VERIFY(nvpair_value_nvlist(elem, &value) == 0);
 178                                 (void) printf("%*s%s\n", indent, "",
 179                                     nvpair_name(elem));
 180                                 dump_nvlist(value, indent + 4);
 181                         }
 182                         break;
 183
 184                 case DATA_TYPE_NVLIST_ARRAY:
 185                         {
 186                                 nvlist_t **value;
 187                                 uint_t c, count;
 188
 189                                 VERIFY(nvpair_value_nvlist_array(elem, &value,
 190                                     &count) == 0);
 191
 192                                 for (c = 0; c < count; c++) {
 193                                         (void) printf("%*s%s[%u]\n", indent, "",
 194                                             nvpair_name(elem), c);
 195                                         dump_nvlist(value[c], indent + 8);
 196                                 }
 197                         }
 198                         break;
 199
 200                 default:
 201
 202                         (void) printf("bad config type %d for %s\n",
 203                             nvpair_type(elem), nvpair_name(elem));
 204                 }
 205         }
 206 }
 207
 208 /* ARGSUSED */
 209 static void
 210 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 211 {
 212         nvlist_t *nv;
 213         size_t nvsize = *(uint64_t *)data;
 214         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 215
 216         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed));
 217
 218         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 219
 220         umem_free(packed, nvsize);
 221
 222         dump_nvlist(nv, 8);
 223
 224         nvlist_free(nv);
 225 }
 226
 227 const char dump_zap_stars[] = "****************************************";
 228 const int dump_zap_width = sizeof (dump_zap_stars) - 1;
 229
 230 static void
 231 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
 232 {
 233         int i;
 234         int minidx = ZAP_HISTOGRAM_SIZE - 1;
 235         int maxidx = 0;
 236         uint64_t max = 0;
 237
 238         for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
 239                 if (histo[i] > max)
 240                         max = histo[i];
 241                 if (histo[i] > 0 && i > maxidx)
 242                         maxidx = i;
 243                 if (histo[i] > 0 && i < minidx)
 244                         minidx = i;
 245         }
 246
 247         if (max < dump_zap_width)
 248                 max = dump_zap_width;
 249
 250         for (i = minidx; i <= maxidx; i++)
 251                 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
 252                     &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
 253 }
 254
 255 static void
 256 dump_zap_stats(objset_t *os, uint64_t object)
 257 {
 258         int error;
 259         zap_stats_t zs;
 260
 261         error = zap_get_stats(os, object, &zs);
 262         if (error)
 263                 return;
 264
 265         if (zs.zs_ptrtbl_len == 0) {
 266                 ASSERT(zs.zs_num_blocks == 1);
 267                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 268                     (u_longlong_t)zs.zs_blocksize,
 269                     (u_longlong_t)zs.zs_num_entries);
 270                 return;
 271         }
 272
 273         (void) printf("\tFat ZAP stats:\n");
 274
 275         (void) printf("\t\tPointer table:\n");
 276         (void) printf("\t\t\t%llu elements\n",
 277             (u_longlong_t)zs.zs_ptrtbl_len);
 278         (void) printf("\t\t\tzt_blk: %llu\n",
 279             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 280         (void) printf("\t\t\tzt_numblks: %llu\n",
 281             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 282         (void) printf("\t\t\tzt_shift: %llu\n",
 283             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 284         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 285             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 286         (void) printf("\t\t\tzt_nextblk: %llu\n",
 287             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 288
 289         (void) printf("\t\tZAP entries: %llu\n",
 290             (u_longlong_t)zs.zs_num_entries);
 291         (void) printf("\t\tLeaf blocks: %llu\n",
 292             (u_longlong_t)zs.zs_num_leafs);
 293         (void) printf("\t\tTotal blocks: %llu\n",
 294             (u_longlong_t)zs.zs_num_blocks);
 295         (void) printf("\t\tzap_block_type: 0x%llx\n",
 296             (u_longlong_t)zs.zs_block_type);
 297         (void) printf("\t\tzap_magic: 0x%llx\n",
 298             (u_longlong_t)zs.zs_magic);
 299         (void) printf("\t\tzap_salt: 0x%llx\n",
 300             (u_longlong_t)zs.zs_salt);
 301
 302         (void) printf("\t\tLeafs with 2^n pointers:\n");
 303         dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
 304
 305         (void) printf("\t\tBlocks with n*5 entries:\n");
 306         dump_zap_histogram(zs.zs_blocks_with_n5_entries);
 307
 308         (void) printf("\t\tBlocks n/10 full:\n");
 309         dump_zap_histogram(zs.zs_blocks_n_tenths_full);
 310
 311         (void) printf("\t\tEntries with n chunks:\n");
 312         dump_zap_histogram(zs.zs_entries_using_n_chunks);
 313
 314         (void) printf("\t\tBuckets with n entries:\n");
 315         dump_zap_histogram(zs.zs_buckets_with_n_entries);
 316 }
 317
 318 /*ARGSUSED*/
 319 static void
 320 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 321 {
 322 }
 323
 324 /*ARGSUSED*/
 325 void
 326 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 327 {
 328 }
 329
 330 /*ARGSUSED*/
 331 static void
 332 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 333 {
 334 }
 335
 336 /*ARGSUSED*/
 337 static void
 338 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 339 {
 340         zap_cursor_t zc;
 341         zap_attribute_t attr;
 342         void *prop;
 343         int i;
 344
 345         dump_zap_stats(os, object);
 346         (void) printf("\n");
 347
 348         for (zap_cursor_init(&zc, os, object);
 349             zap_cursor_retrieve(&zc, &attr) == 0;
 350             zap_cursor_advance(&zc)) {
 351                 (void) printf("\t\t%s = ", attr.za_name);
 352                 if (attr.za_num_integers == 0) {
 353                         (void) printf("\n");
 354                         continue;
 355                 }
 356                 prop = umem_zalloc(attr.za_num_integers *
 357                     attr.za_integer_length, UMEM_NOFAIL);
 358                 (void) zap_lookup(os, object, attr.za_name,
 359                     attr.za_integer_length, attr.za_num_integers, prop);
 360                 if (attr.za_integer_length == 1) {
 361                         (void) printf("%s", (char *)prop);
 362                 } else {
 363                         for (i = 0; i < attr.za_num_integers; i++) {
 364                                 switch (attr.za_integer_length) {
 365                                 case 2:
 366                                         (void) printf("%u ",
 367                                             ((uint16_t *)prop)[i]);
 368                                         break;
 369                                 case 4:
 370                                         (void) printf("%u ",
 371                                             ((uint32_t *)prop)[i]);
 372                                         break;
 373                                 case 8:
 374                                         (void) printf("%lld ",
 375                                             (u_longlong_t)((int64_t *)prop)[i]);
 376                                         break;
 377                                 }
 378                         }
 379                 }
 380                 (void) printf("\n");
 381                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 382         }
 383         zap_cursor_fini(&zc);
 384 }
 385
 386 /*ARGSUSED*/
 387 static void
 388 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 389 {
 390         zap_cursor_t zc;
 391         zap_attribute_t attr;
 392         const char *typenames[] = {
 393                 /* 0 */ "not specified",
 394                 /* 1 */ "FIFO",
 395                 /* 2 */ "Character Device",
 396                 /* 3 */ "3 (invalid)",
 397                 /* 4 */ "Directory",
 398                 /* 5 */ "5 (invalid)",
 399                 /* 6 */ "Block Device",
 400                 /* 7 */ "7 (invalid)",
 401                 /* 8 */ "Regular File",
 402                 /* 9 */ "9 (invalid)",
 403                 /* 10 */ "Symbolic Link",
 404                 /* 11 */ "11 (invalid)",
 405                 /* 12 */ "Socket",
 406                 /* 13 */ "Door",
 407                 /* 14 */ "Event Port",
 408                 /* 15 */ "15 (invalid)",
 409         };
 410
 411         dump_zap_stats(os, object);
 412         (void) printf("\n");
 413
 414         for (zap_cursor_init(&zc, os, object);
 415             zap_cursor_retrieve(&zc, &attr) == 0;
 416             zap_cursor_advance(&zc)) {
 417                 (void) printf("\t\t%s = %lld (type: %s)\n",
 418                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 419                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 420         }
 421         zap_cursor_fini(&zc);
 422 }
 423
 424 static void
 425 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 426 {
 427         uint64_t alloc, offset, entry;
 428         uint8_t mapshift = sm->sm_shift;
 429         uint64_t mapstart = sm->sm_start;
 430         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 431                             "INVALID", "INVALID", "INVALID", "INVALID" };
 432
 433         if (smo->smo_object == 0)
 434                 return;
 435
 436         /*
 437          * Print out the freelist entries in both encoded and decoded form.
 438          */
 439         alloc = 0;
 440         for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 441                 VERIFY(0 == dmu_read(os, smo->smo_object, offset,
 442                     sizeof (entry), &entry));
 443                 if (SM_DEBUG_DECODE(entry)) {
 444                         (void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n",
 445                             (u_longlong_t)(offset / sizeof (entry)),
 446                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 447                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 448                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 449                 } else {
 450                         (void) printf("\t\t[%4llu]    %c  range:"
 451                             " %08llx-%08llx  size: %06llx\n",
 452                             (u_longlong_t)(offset / sizeof (entry)),
 453                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 454                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 455                             mapshift) + mapstart),
 456                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 457                             mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
 458                             mapshift)),
 459                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 460                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 461                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 462                         else
 463                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 464                 }
 465         }
 466         if (alloc != smo->smo_alloc) {
 467                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 468                     "with space map summary (%llu)\n",
 469                     (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
 470         }
 471 }
 472
 473 static void
 474 dump_metaslab(metaslab_t *msp)
 475 {
 476         char freebuf[5];
 477         space_map_obj_t *smo = &msp->ms_smo;
 478         vdev_t *vd = msp->ms_group->mg_vd;
 479         spa_t *spa = vd->vdev_spa;
 480
 481         nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf);
 482
 483         if (dump_opt['d'] <= 5) {
 484                 (void) printf("\t%10llx   %10llu   %5s\n",
 485                     (u_longlong_t)msp->ms_map.sm_start,
 486                     (u_longlong_t)smo->smo_object,
 487                     freebuf);
 488                 return;
 489         }
 490
 491         (void) printf(
 492             "\tvdev %llu   offset %08llx   spacemap %4llu   free %5s\n",
 493             (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start,
 494             (u_longlong_t)smo->smo_object, freebuf);
 495
 496         ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift));
 497
 498         dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map);
 499 }
 500
 501 static void
 502 dump_metaslabs(spa_t *spa)
 503 {
 504         vdev_t *rvd = spa->spa_root_vdev;
 505         vdev_t *vd;
 506         int c, m;
 507
 508         (void) printf("\nMetaslabs:\n");
 509
 510         for (c = 0; c < rvd->vdev_children; c++) {
 511                 vd = rvd->vdev_child[c];
 512
 513                 (void) printf("\n    vdev %llu = %s\n\n",
 514                     (u_longlong_t)vd->vdev_id, vdev_description(vd));
 515
 516                 if (dump_opt['d'] <= 5) {
 517                         (void) printf("\t%10s   %10s   %5s\n",
 518                             "offset", "spacemap", "free");
 519                         (void) printf("\t%10s   %10s   %5s\n",
 520                             "------", "--------", "----");
 521                 }
 522                 for (m = 0; m < vd->vdev_ms_count; m++)
 523                         dump_metaslab(vd->vdev_ms[m]);
 524                 (void) printf("\n");
 525         }
 526 }
 527
 528 static void
 529 dump_dtl(vdev_t *vd, int indent)
 530 {
 531         avl_tree_t *t = &vd->vdev_dtl_map.sm_root;
 532         space_seg_t *ss;
 533         vdev_t *pvd;
 534         int c;
 535
 536         if (indent == 0)
 537                 (void) printf("\nDirty time logs:\n\n");
 538
 539         (void) printf("\t%*s%s\n", indent, "", vdev_description(vd));
 540
 541         for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) {
 542                 /*
 543                  * Everything in this DTL must appear in all parent DTL unions.
 544                  */
 545                 for (pvd = vd; pvd; pvd = pvd->vdev_parent)
 546                         ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map,
 547                             ss->ss_start, ss->ss_end - ss->ss_start));
 548                 (void) printf("\t%*soutage [%llu,%llu] length %llu\n",
 549                     indent, "",
 550                     (u_longlong_t)ss->ss_start,
 551                     (u_longlong_t)ss->ss_end - 1,
 552                     (u_longlong_t)(ss->ss_end - ss->ss_start));
 553         }
 554
 555         (void) printf("\n");
 556
 557         if (dump_opt['d'] > 5 && vd->vdev_children == 0) {
 558                 dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl,
 559                     &vd->vdev_dtl_map);
 560                 (void) printf("\n");
 561         }
 562
 563         for (c = 0; c < vd->vdev_children; c++)
 564                 dump_dtl(vd->vdev_child[c], indent + 4);
 565 }
 566
 567 /*ARGSUSED*/
 568 static void
 569 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 570 {
 571 }
 572
 573 static uint64_t
 574 blkid2offset(dnode_phys_t *dnp, int level, uint64_t blkid)
 575 {
 576         if (level < 0)
 577                 return (blkid);
 578
 579         return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 580             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 581 }
 582
 583 static void
 584 sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas)
 585 {
 586         dva_t *dva = bp->blk_dva;
 587         int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1;
 588         int i;
 589
 590         blkbuf[0] = '\0';
 591
 592         for (i = 0; i < ndvas; i++)
 593                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 594                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 595                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 596                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 597
 598         (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu",
 599             (u_longlong_t)BP_GET_LSIZE(bp),
 600             (u_longlong_t)BP_GET_PSIZE(bp),
 601             (u_longlong_t)bp->blk_fill,
 602             (u_longlong_t)bp->blk_birth);
 603 }
 604
 605 /* ARGSUSED */
 606 static int
 607 zdb_indirect_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a)
 608 {
 609         zbookmark_t *zb = &bc->bc_bookmark;
 610         blkptr_t *bp = &bc->bc_blkptr;
 611         void *data = bc->bc_data;
 612         dnode_phys_t *dnp = bc->bc_dnode;
 613         char blkbuf[BP_SPRINTF_LEN + 80];
 614         int l;
 615
 616         if (bc->bc_errno) {
 617                 (void) sprintf(blkbuf,
 618                     "Error %d reading <%llu, %llu, %lld, %llu>: ",
 619                     bc->bc_errno,
 620                     (u_longlong_t)zb->zb_objset,
 621                     (u_longlong_t)zb->zb_object,
 622                     (u_longlong_t)zb->zb_level,
 623                     (u_longlong_t)zb->zb_blkid);
 624                 goto out;
 625         }
 626
 627         if (zb->zb_level == -1) {
 628                 ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET);
 629                 ASSERT3U(BP_GET_LEVEL(bp), ==, 0);
 630         } else {
 631                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 632                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 633         }
 634
 635         if (zb->zb_level > 0) {
 636                 uint64_t fill = 0;
 637                 blkptr_t *bpx, *bpend;
 638
 639                 for (bpx = data, bpend = bpx + BP_GET_LSIZE(bp) / sizeof (*bpx);
 640                     bpx < bpend; bpx++) {
 641                         if (bpx->blk_birth != 0) {
 642                                 fill += bpx->blk_fill;
 643                         } else {
 644                                 ASSERT(bpx->blk_fill == 0);
 645                         }
 646                 }
 647                 ASSERT3U(fill, ==, bp->blk_fill);
 648         }
 649
 650         if (zb->zb_level == 0 && dnp->dn_type == DMU_OT_DNODE) {
 651                 uint64_t fill = 0;
 652                 dnode_phys_t *dnx, *dnend;
 653
 654                 for (dnx = data, dnend = dnx + (BP_GET_LSIZE(bp)>>DNODE_SHIFT);
 655                     dnx < dnend; dnx++) {
 656                         if (dnx->dn_type != DMU_OT_NONE)
 657                                 fill++;
 658                 }
 659                 ASSERT3U(fill, ==, bp->blk_fill);
 660         }
 661
 662         (void) sprintf(blkbuf, "%16llx ",
 663             (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid));
 664
 665         ASSERT(zb->zb_level >= 0);
 666
 667         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 668                 if (l == zb->zb_level) {
 669                         (void) sprintf(blkbuf + strlen(blkbuf), "L%llx",
 670                             (u_longlong_t)zb->zb_level);
 671                 } else {
 672                         (void) sprintf(blkbuf + strlen(blkbuf), " ");
 673                 }
 674         }
 675
 676 out:
 677         if (bp->blk_birth == 0) {
 678                 (void) sprintf(blkbuf + strlen(blkbuf), "<hole>");
 679                 (void) printf("%s\n", blkbuf);
 680         } else {
 681                 sprintf_blkptr_compact(blkbuf + strlen(blkbuf), bp,
 682                     dump_opt['d'] > 5 ? 1 : 0);
 683                 (void) printf("%s\n", blkbuf);
 684         }
 685
 686         return (bc->bc_errno ? ERESTART : 0);
 687 }
 688
 689 /*ARGSUSED*/
 690 static void
 691 dump_indirect(objset_t *os, uint64_t object, void *data, size_t size)
 692 {
 693         traverse_handle_t *th;
 694         uint64_t objset = dmu_objset_id(os);
 695         int advance = zdb_advance;
 696
 697         (void) printf("Indirect blocks:\n");
 698
 699         if (object == 0)
 700                 advance |= ADVANCE_DATA;
 701
 702         th = traverse_init(dmu_objset_spa(os), zdb_indirect_cb, NULL, advance,
 703             ZIO_FLAG_CANFAIL);
 704         th->th_noread = zdb_noread;
 705
 706         traverse_add_dnode(th, 0, -1ULL, objset, object);
 707
 708         while (traverse_more(th) == EAGAIN)
 709                 continue;
 710
 711         (void) printf("\n");
 712
 713         traverse_fini(th);
 714 }
 715
 716 /*ARGSUSED*/
 717 static void
 718 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
 719 {
 720         dsl_dir_phys_t *dd = data;
 721         time_t crtime;
 722         char used[6], compressed[6], uncompressed[6], quota[6], resv[6];
 723
 724         if (dd == NULL)
 725                 return;
 726
 727         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
 728
 729         crtime = dd->dd_creation_time;
 730         nicenum(dd->dd_used_bytes, used);
 731         nicenum(dd->dd_compressed_bytes, compressed);
 732         nicenum(dd->dd_uncompressed_bytes, uncompressed);
 733         nicenum(dd->dd_quota, quota);
 734         nicenum(dd->dd_reserved, resv);
 735
 736         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
 737         (void) printf("\t\thead_dataset_obj = %llu\n",
 738             (u_longlong_t)dd->dd_head_dataset_obj);
 739         (void) printf("\t\tparent_dir_obj = %llu\n",
 740             (u_longlong_t)dd->dd_parent_obj);
 741         (void) printf("\t\torigin_obj = %llu\n",
 742             (u_longlong_t)dd->dd_origin_obj);
 743         (void) printf("\t\tchild_dir_zapobj = %llu\n",
 744             (u_longlong_t)dd->dd_child_dir_zapobj);
 745         (void) printf("\t\tused_bytes = %s\n", used);
 746         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
 747         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
 748         (void) printf("\t\tquota = %s\n", quota);
 749         (void) printf("\t\treserved = %s\n", resv);
 750         (void) printf("\t\tprops_zapobj = %llu\n",
 751             (u_longlong_t)dd->dd_props_zapobj);
 752         (void) printf("\t\tdeleg_zapobj = %llu\n",
 753             (u_longlong_t)dd->dd_deleg_zapobj);
 754 }
 755
 756 /*ARGSUSED*/
 757 static void
 758 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
 759 {
 760         dsl_dataset_phys_t *ds = data;
 761         time_t crtime;
 762         char used[6], compressed[6], uncompressed[6], unique[6];
 763         char blkbuf[BP_SPRINTF_LEN];
 764
 765         if (ds == NULL)
 766                 return;
 767
 768         ASSERT(size == sizeof (*ds));
 769         crtime = ds->ds_creation_time;
 770         nicenum(ds->ds_used_bytes, used);
 771         nicenum(ds->ds_compressed_bytes, compressed);
 772         nicenum(ds->ds_uncompressed_bytes, uncompressed);
 773         nicenum(ds->ds_unique_bytes, unique);
 774         sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp);
 775
 776         (void) printf("\t\tdataset_obj = %llu\n",
 777             (u_longlong_t)ds->ds_dir_obj);
 778         (void) printf("\t\tprev_snap_obj = %llu\n",
 779             (u_longlong_t)ds->ds_prev_snap_obj);
 780         (void) printf("\t\tprev_snap_txg = %llu\n",
 781             (u_longlong_t)ds->ds_prev_snap_txg);
 782         (void) printf("\t\tnext_snap_obj = %llu\n",
 783             (u_longlong_t)ds->ds_next_snap_obj);
 784         (void) printf("\t\tsnapnames_zapobj = %llu\n",
 785             (u_longlong_t)ds->ds_snapnames_zapobj);
 786         (void) printf("\t\tnum_children = %llu\n",
 787             (u_longlong_t)ds->ds_num_children);
 788         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
 789         (void) printf("\t\tcreation_txg = %llu\n",
 790             (u_longlong_t)ds->ds_creation_txg);
 791         (void) printf("\t\tdeadlist_obj = %llu\n",
 792             (u_longlong_t)ds->ds_deadlist_obj);
 793         (void) printf("\t\tused_bytes = %s\n", used);
 794         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
 795         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
 796         (void) printf("\t\tunique = %s\n", unique);
 797         (void) printf("\t\tfsid_guid = %llu\n",
 798             (u_longlong_t)ds->ds_fsid_guid);
 799         (void) printf("\t\tguid = %llu\n",
 800             (u_longlong_t)ds->ds_guid);
 801         (void) printf("\t\tflags = %llx\n",
 802             (u_longlong_t)ds->ds_flags);
 803         (void) printf("\t\tbp = %s\n", blkbuf);
 804 }
 805
 806 static void
 807 dump_bplist(objset_t *mos, uint64_t object, char *name)
 808 {
 809         bplist_t bpl = { 0 };
 810         blkptr_t blk, *bp = &blk;
 811         uint64_t itor = 0;
 812         char bytes[6];
 813         char comp[6];
 814         char uncomp[6];
 815
 816         if (dump_opt['d'] < 3)
 817                 return;
 818
 819         mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL);
 820         VERIFY(0 == bplist_open(&bpl, mos, object));
 821         if (bplist_empty(&bpl)) {
 822                 bplist_close(&bpl);
 823                 mutex_destroy(&bpl.bpl_lock);
 824                 return;
 825         }
 826
 827         nicenum(bpl.bpl_phys->bpl_bytes, bytes);
 828         if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) {
 829                 nicenum(bpl.bpl_phys->bpl_comp, comp);
 830                 nicenum(bpl.bpl_phys->bpl_uncomp, uncomp);
 831                 (void) printf("\n    %s: %llu entries, %s (%s/%s comp)\n",
 832                     name, (u_longlong_t)bpl.bpl_phys->bpl_entries,
 833                     bytes, comp, uncomp);
 834         } else {
 835                 (void) printf("\n    %s: %llu entries, %s\n",
 836                     name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes);
 837         }
 838
 839         if (dump_opt['d'] < 5) {
 840                 bplist_close(&bpl);
 841                 mutex_destroy(&bpl.bpl_lock);
 842                 return;
 843         }
 844
 845         (void) printf("\n");
 846
 847         while (bplist_iterate(&bpl, &itor, bp) == 0) {
 848                 char blkbuf[BP_SPRINTF_LEN];
 849
 850                 ASSERT(bp->blk_birth != 0);
 851                 sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
 852                 (void) printf("\tItem %3llu: %s\n",
 853                     (u_longlong_t)itor - 1, blkbuf);
 854         }
 855
 856         bplist_close(&bpl);
 857         mutex_destroy(&bpl.bpl_lock);
 858 }
 859
 860 static avl_tree_t idx_tree;
 861 static avl_tree_t domain_tree;
 862 static boolean_t fuid_table_loaded;
 863
 864 static void
 865 fuid_table_destroy()
 866 {
 867         if (fuid_table_loaded) {
 868                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
 869                 fuid_table_loaded = B_FALSE;
 870         }
 871 }
 872
 873 /*
 874  * print uid or gid information.
 875  * For normal POSIX id just the id is printed in decimal format.
 876  * For CIFS files with FUID the fuid is printed in hex followed by
 877  * the doman-rid string.
 878  */
 879 static void
 880 print_idstr(uint64_t id, const char *id_type)
 881 {
 882         if (FUID_INDEX(id)) {
 883                 char *domain;
 884
 885                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
 886                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
 887                     (u_longlong_t)id, domain, (int)FUID_RID(id));
 888         } else {
 889                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
 890         }
 891
 892 }
 893
 894 static void
 895 dump_uidgid(objset_t *os, znode_phys_t *zp)
 896 {
 897         uint32_t uid_idx, gid_idx;
 898
 899         uid_idx = FUID_INDEX(zp->zp_uid);
 900         gid_idx = FUID_INDEX(zp->zp_gid);
 901
 902         /* Load domain table, if not already loaded */
 903         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
 904                 uint64_t fuid_obj;
 905
 906                 /* first find the fuid object.  It lives in the master node */
 907                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
 908                     8, 1, &fuid_obj) == 0);
 909                 (void) zfs_fuid_table_load(os, fuid_obj,
 910                     &idx_tree, &domain_tree);
 911                 fuid_table_loaded = B_TRUE;
 912         }
 913
 914         print_idstr(zp->zp_uid, "uid");
 915         print_idstr(zp->zp_gid, "gid");
 916 }
 917
 918 /*ARGSUSED*/
 919 static void
 920 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
 921 {
 922         znode_phys_t *zp = data;
 923         time_t z_crtime, z_atime, z_mtime, z_ctime;
 924         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
 925         int error;
 926
 927         ASSERT(size >= sizeof (znode_phys_t));
 928
 929         error = zfs_obj_to_path(os, object, path, sizeof (path));
 930         if (error != 0) {
 931                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
 932                     (u_longlong_t)object);
 933         }
 934
 935         if (dump_opt['d'] < 3) {
 936                 (void) printf("\t%s\n", path);
 937                 return;
 938         }
 939
 940         z_crtime = (time_t)zp->zp_crtime[0];
 941         z_atime = (time_t)zp->zp_atime[0];
 942         z_mtime = (time_t)zp->zp_mtime[0];
 943         z_ctime = (time_t)zp->zp_ctime[0];
 944
 945         (void) printf("\tpath   %s\n", path);
 946         dump_uidgid(os, zp);
 947         (void) printf("\tatime  %s", ctime(&z_atime));
 948         (void) printf("\tmtime  %s", ctime(&z_mtime));
 949         (void) printf("\tctime  %s", ctime(&z_ctime));
 950         (void) printf("\tcrtime %s", ctime(&z_crtime));
 951         (void) printf("\tgen    %llu\n", (u_longlong_t)zp->zp_gen);
 952         (void) printf("\tmode   %llo\n", (u_longlong_t)zp->zp_mode);
 953         (void) printf("\tsize   %llu\n", (u_longlong_t)zp->zp_size);
 954         (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent);
 955         (void) printf("\tlinks  %llu\n", (u_longlong_t)zp->zp_links);
 956         (void) printf("\txattr  %llu\n", (u_longlong_t)zp->zp_xattr);
 957         (void) printf("\trdev   0x%016llx\n", (u_longlong_t)zp->zp_rdev);
 958 }
 959
 960 /*ARGSUSED*/
 961 static void
 962 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
 963 {
 964 }
 965
 966 /*ARGSUSED*/
 967 static void
 968 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
 969 {
 970 }
 971
 972 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
 973         dump_none,              /* unallocated                  */
 974         dump_zap,               /* object directory             */
 975         dump_uint64,            /* object array                 */
 976         dump_none,              /* packed nvlist                */
 977         dump_packed_nvlist,     /* packed nvlist size           */
 978         dump_none,              /* bplist                       */
 979         dump_none,              /* bplist header                */
 980         dump_none,              /* SPA space map header         */
 981         dump_none,              /* SPA space map                */
 982         dump_none,              /* ZIL intent log               */
 983         dump_dnode,             /* DMU dnode                    */
 984         dump_dmu_objset,        /* DMU objset                   */
 985         dump_dsl_dir,           /* DSL directory                */
 986         dump_zap,               /* DSL directory child map      */
 987         dump_zap,               /* DSL dataset snap map         */
 988         dump_zap,               /* DSL props                    */
 989         dump_dsl_dataset,       /* DSL dataset                  */
 990         dump_znode,             /* ZFS znode                    */
 991         dump_acl,               /* ZFS V0 ACL                   */
 992         dump_uint8,             /* ZFS plain file               */
 993         dump_zpldir,            /* ZFS directory                */
 994         dump_zap,               /* ZFS master node              */
 995         dump_zap,               /* ZFS delete queue             */
 996         dump_uint8,             /* zvol object                  */
 997         dump_zap,               /* zvol prop                    */
 998         dump_uint8,             /* other uint8[]                */
 999         dump_uint64,            /* other uint64[]               */
1000         dump_zap,               /* other ZAP                    */
1001         dump_zap,               /* persistent error log         */
1002         dump_uint8,             /* SPA history                  */
1003         dump_uint64,            /* SPA history offsets          */
1004         dump_zap,               /* Pool properties              */
1005         dump_zap,               /* DSL permissions              */
1006         dump_acl,               /* ZFS ACL                      */
1007         dump_uint8,             /* ZFS SYSACL                   */
1008         dump_none,              /* FUID nvlist                  */
1009         dump_packed_nvlist,     /* FUID nvlist size             */
1010 };
1011
1012 static void
1013 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1014 {
1015         dmu_buf_t *db = NULL;
1016         dmu_object_info_t doi;
1017         dnode_t *dn;
1018         void *bonus = NULL;
1019         size_t bsize = 0;
1020         char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1021         char aux[50];
1022         int error;
1023
1024         if (*print_header) {
1025                 (void) printf("\n    Object  lvl   iblk   dblk  lsize"
1026                     "  asize  type\n");
1027                 *print_header = 0;
1028         }
1029
1030         if (object == 0) {
1031                 dn = os->os->os_meta_dnode;
1032         } else {
1033                 error = dmu_bonus_hold(os, object, FTAG, &db);
1034                 if (error)
1035                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1036                             object, error);
1037                 bonus = db->db_data;
1038                 bsize = db->db_size;
1039                 dn = ((dmu_buf_impl_t *)db)->db_dnode;
1040         }
1041         dmu_object_info_from_dnode(dn, &doi);
1042
1043         nicenum(doi.doi_metadata_block_size, iblk);
1044         nicenum(doi.doi_data_block_size, dblk);
1045         nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1046             lsize);
1047         nicenum(doi.doi_physical_blks << 9, asize);
1048         nicenum(doi.doi_bonus_size, bonus_size);
1049
1050         aux[0] = '\0';
1051
1052         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1053                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1054                     zio_checksum_table[doi.doi_checksum].ci_name);
1055         }
1056
1057         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1058                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1059                     zio_compress_table[doi.doi_compress].ci_name);
1060         }
1061
1062         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1063             (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1064             asize, dmu_ot[doi.doi_type].ot_name, aux);
1065
1066         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1067                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1068                     "", "", "", "", bonus_size, "bonus",
1069                     dmu_ot[doi.doi_bonus_type].ot_name);
1070         }
1071
1072         if (verbosity >= 4) {
1073                 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1074                 object_viewer[doi.doi_type](os, object, NULL, 0);
1075                 *print_header = 1;
1076         }
1077
1078         if (verbosity >= 5)
1079                 dump_indirect(os, object, NULL, 0);
1080
1081         if (verbosity >= 5) {
1082                 /*
1083                  * Report the list of segments that comprise the object.
1084                  */
1085                 uint64_t start = 0;
1086                 uint64_t end;
1087                 uint64_t blkfill = 1;
1088                 int minlvl = 1;
1089
1090                 if (dn->dn_type == DMU_OT_DNODE) {
1091                         minlvl = 0;
1092                         blkfill = DNODES_PER_BLOCK;
1093                 }
1094
1095                 for (;;) {
1096                         error = dnode_next_offset(dn, B_FALSE, &start, minlvl,
1097                             blkfill, 0);
1098                         if (error)
1099                                 break;
1100                         end = start;
1101                         error = dnode_next_offset(dn, B_TRUE, &end, minlvl,
1102                             blkfill, 0);
1103                         nicenum(end - start, segsize);
1104                         (void) printf("\t\tsegment [%016llx, %016llx)"
1105                             " size %5s\n", (u_longlong_t)start,
1106                             (u_longlong_t)end, segsize);
1107                         if (error)
1108                                 break;
1109                         start = end;
1110                 }
1111         }
1112
1113         if (db != NULL)
1114                 dmu_buf_rele(db, FTAG);
1115 }
1116
1117 static char *objset_types[DMU_OST_NUMTYPES] = {
1118         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1119
1120 static void
1121 dump_dir(objset_t *os)
1122 {
1123         dmu_objset_stats_t dds;
1124         uint64_t object, object_count;
1125         uint64_t refdbytes, usedobjs, scratch;
1126         char numbuf[8];
1127         char blkbuf[BP_SPRINTF_LEN];
1128         char osname[MAXNAMELEN];
1129         char *type = "UNKNOWN";
1130         int verbosity = dump_opt['d'];
1131         int print_header = 1;
1132         int i, error;
1133
1134         dmu_objset_fast_stat(os, &dds);
1135
1136         if (dds.dds_type < DMU_OST_NUMTYPES)
1137                 type = objset_types[dds.dds_type];
1138
1139         if (dds.dds_type == DMU_OST_META) {
1140                 dds.dds_creation_txg = TXG_INITIAL;
1141                 usedobjs = os->os->os_rootbp->blk_fill;
1142                 refdbytes =
1143                     os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes;
1144         } else {
1145                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1146         }
1147
1148         ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1149
1150         nicenum(refdbytes, numbuf);
1151
1152         if (verbosity >= 4) {
1153                 (void) strcpy(blkbuf, ", rootbp ");
1154                 sprintf_blkptr(blkbuf + strlen(blkbuf),
1155                     BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1156         } else {
1157                 blkbuf[0] = '\0';
1158         }
1159
1160         dmu_objset_name(os, osname);
1161
1162         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1163             "%s, %llu objects%s\n",
1164             osname, type, (u_longlong_t)dmu_objset_id(os),
1165             (u_longlong_t)dds.dds_creation_txg,
1166             numbuf, (u_longlong_t)usedobjs, blkbuf);
1167
1168         dump_intent_log(dmu_objset_zil(os));
1169
1170         if (dmu_objset_ds(os) != NULL)
1171                 dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1172                     dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1173
1174         if (verbosity < 2)
1175                 return;
1176
1177         if (zopt_objects != 0) {
1178                 for (i = 0; i < zopt_objects; i++)
1179                         dump_object(os, zopt_object[i], verbosity,
1180                             &print_header);
1181                 (void) printf("\n");
1182                 return;
1183         }
1184
1185         dump_object(os, 0, verbosity, &print_header);
1186         object_count = 1;
1187
1188         object = 0;
1189         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1190                 dump_object(os, object, verbosity, &print_header);
1191                 object_count++;
1192         }
1193
1194         ASSERT3U(object_count, ==, usedobjs);
1195
1196         (void) printf("\n");
1197
1198         if (error != ESRCH)
1199                 fatal("dmu_object_next() = %d", error);
1200 }
1201
1202 static void
1203 dump_uberblock(uberblock_t *ub)
1204 {
1205         time_t timestamp = ub->ub_timestamp;
1206
1207         (void) printf("Uberblock\n\n");
1208         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1209         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1210         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1211         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1212         (void) printf("\ttimestamp = %llu UTC = %s",
1213             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1214         if (dump_opt['u'] >= 3) {
1215                 char blkbuf[BP_SPRINTF_LEN];
1216                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1217                 (void) printf("\trootbp = %s\n", blkbuf);
1218         }
1219         (void) printf("\n");
1220 }
1221
1222 static void
1223 dump_config(const char *pool)
1224 {
1225         spa_t *spa = NULL;
1226
1227         mutex_enter(&spa_namespace_lock);
1228         while ((spa = spa_next(spa)) != NULL) {
1229                 if (pool == NULL)
1230                         (void) printf("%s\n", spa_name(spa));
1231                 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1232                         dump_nvlist(spa->spa_config, 4);
1233         }
1234         mutex_exit(&spa_namespace_lock);
1235 }
1236
1237 static void
1238 dump_label(const char *dev)
1239 {
1240         int fd;
1241         vdev_label_t label;
1242         char *buf = label.vl_vdev_phys.vp_nvlist;
1243         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1244         struct stat64 statbuf;
1245         uint64_t psize;
1246         int l;
1247
1248         if ((fd = open64(dev, O_RDONLY)) < 0) {
1249                 (void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1250                 exit(1);
1251         }
1252
1253         if (fstat64(fd, &statbuf) != 0) {
1254                 (void) printf("failed to stat '%s': %s\n", dev,
1255                     strerror(errno));
1256                 exit(1);
1257         }
1258
1259         psize = statbuf.st_size;
1260         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1261
1262         for (l = 0; l < VDEV_LABELS; l++) {
1263
1264                 nvlist_t *config = NULL;
1265
1266                 (void) printf("--------------------------------------------\n");
1267                 (void) printf("LABEL %d\n", l);
1268                 (void) printf("--------------------------------------------\n");
1269
1270                 if (pread64(fd, &label, sizeof (label),
1271                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1272                         (void) printf("failed to read label %d\n", l);
1273                         continue;
1274                 }
1275
1276                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1277                         (void) printf("failed to unpack label %d\n", l);
1278                         continue;
1279                 }
1280                 dump_nvlist(config, 4);
1281                 nvlist_free(config);
1282         }
1283 }
1284
1285 /*ARGSUSED*/
1286 static int
1287 dump_one_dir(char *dsname, void *arg)
1288 {
1289         int error;
1290         objset_t *os;
1291
1292         error = dmu_objset_open(dsname, DMU_OST_ANY,
1293             DS_MODE_STANDARD | DS_MODE_READONLY, &os);
1294         if (error) {
1295                 (void) printf("Could not open %s\n", dsname);
1296                 return (0);
1297         }
1298         dump_dir(os);
1299         dmu_objset_close(os);
1300         fuid_table_destroy();
1301         return (0);
1302 }
1303
1304 static void
1305 zdb_space_map_load(spa_t *spa)
1306 {
1307         vdev_t *rvd = spa->spa_root_vdev;
1308         vdev_t *vd;
1309         int c, m, error;
1310
1311         for (c = 0; c < rvd->vdev_children; c++) {
1312                 vd = rvd->vdev_child[c];
1313                 for (m = 0; m < vd->vdev_ms_count; m++) {
1314                         metaslab_t *msp = vd->vdev_ms[m];
1315                         mutex_enter(&msp->ms_lock);
1316                         error = space_map_load(&msp->ms_allocmap[0], NULL,
1317                             SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset);
1318                         mutex_exit(&msp->ms_lock);
1319                         if (error)
1320                                 fatal("%s bad space map #%d, error %d",
1321                                     spa->spa_name, c, error);
1322                 }
1323         }
1324 }
1325
1326 static int
1327 zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb)
1328 {
1329         dva_t *dva = bp->blk_dva;
1330         vdev_t *vd;
1331         metaslab_t *msp;
1332         space_map_t *allocmap, *freemap;
1333         int error;
1334         int d;
1335         blkptr_t blk = *bp;
1336
1337         for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1338                 uint64_t vdev = DVA_GET_VDEV(&dva[d]);
1339                 uint64_t offset = DVA_GET_OFFSET(&dva[d]);
1340                 uint64_t size = DVA_GET_ASIZE(&dva[d]);
1341
1342                 if ((vd = vdev_lookup_top(spa, vdev)) == NULL)
1343                         return (ENXIO);
1344
1345                 if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count)
1346                         return (ENXIO);
1347
1348                 msp = vd->vdev_ms[offset >> vd->vdev_ms_shift];
1349                 allocmap = &msp->ms_allocmap[0];
1350                 freemap = &msp->ms_freemap[0];
1351
1352                 /* Prepare our copy of the bp in case we need to read GBHs */
1353                 if (DVA_GET_GANG(&dva[d])) {
1354                         size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE);
1355                         DVA_SET_ASIZE(&blk.blk_dva[d], size);
1356                         DVA_SET_GANG(&blk.blk_dva[d], 0);
1357                 }
1358
1359                 mutex_enter(&msp->ms_lock);
1360                 if (space_map_contains(freemap, offset, size)) {
1361                         mutex_exit(&msp->ms_lock);
1362                         return (EAGAIN);        /* allocated more than once */
1363                 }
1364
1365                 if (!space_map_contains(allocmap, offset, size)) {
1366                         mutex_exit(&msp->ms_lock);
1367                         return (ESTALE);        /* not allocated at all */
1368                 }
1369
1370                 space_map_remove(allocmap, offset, size);
1371                 space_map_add(freemap, offset, size);
1372
1373                 mutex_exit(&msp->ms_lock);
1374         }
1375
1376         if (BP_IS_GANG(bp)) {
1377                 zio_gbh_phys_t gbh;
1378                 int g;
1379
1380                 /* LINTED - compile time assert */
1381                 ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE);
1382
1383                 BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER);
1384                 BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE);
1385                 BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE);
1386                 BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF);
1387                 error = zio_wait(zio_read(NULL, spa, &blk, &gbh,
1388                     SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ,
1389                     ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb));
1390                 if (error)
1391                         return (error);
1392                 if (BP_SHOULD_BYTESWAP(&blk))
1393                         byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE);
1394                 for (g = 0; g < SPA_GBH_NBLKPTRS; g++) {
1395                         if (BP_IS_HOLE(&gbh.zg_blkptr[g]))
1396                                 break;
1397                         error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb);
1398                         if (error)
1399                                 return (error);
1400                 }
1401         }
1402
1403         return (0);
1404 }
1405
1406 static void
1407 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1408 {
1409         metaslab_t *msp;
1410
1411         /* LINTED */
1412         msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0]));
1413
1414         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1415             (u_longlong_t)msp->ms_group->mg_vd->vdev_id,
1416             (u_longlong_t)start,
1417             (u_longlong_t)size);
1418 }
1419
1420 static void
1421 zdb_space_map_unload(spa_t *spa)
1422 {
1423         vdev_t *rvd = spa->spa_root_vdev;
1424         vdev_t *vd;
1425         int c, m;
1426
1427         for (c = 0; c < rvd->vdev_children; c++) {
1428                 vd = rvd->vdev_child[c];
1429                 for (m = 0; m < vd->vdev_ms_count; m++) {
1430                         metaslab_t *msp = vd->vdev_ms[m];
1431                         mutex_enter(&msp->ms_lock);
1432                         space_map_vacate(&msp->ms_allocmap[0], zdb_leak,
1433                             &msp->ms_allocmap[0]);
1434                         space_map_unload(&msp->ms_allocmap[0]);
1435                         space_map_vacate(&msp->ms_freemap[0], NULL, NULL);
1436                         mutex_exit(&msp->ms_lock);
1437                 }
1438         }
1439 }
1440
1441 static void
1442 zdb_refresh_ubsync(spa_t *spa)
1443 {
1444         uberblock_t ub = { 0 };
1445         vdev_t *rvd = spa->spa_root_vdev;
1446         zio_t *zio;
1447
1448         /*
1449          * Reload the uberblock.
1450          */
1451         zio = zio_root(spa, NULL, NULL,
1452             ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE);
1453         vdev_uberblock_load(zio, rvd, &ub);
1454         (void) zio_wait(zio);
1455
1456         if (ub.ub_txg != 0)
1457                 spa->spa_ubsync = ub;
1458 }
1459
1460 /*
1461  * Verify that the sum of the sizes of all blocks in the pool adds up
1462  * to the SPA's sa_alloc total.
1463  */
1464 typedef struct zdb_blkstats {
1465         uint64_t        zb_asize;
1466         uint64_t        zb_lsize;
1467         uint64_t        zb_psize;
1468         uint64_t        zb_count;
1469 } zdb_blkstats_t;
1470
1471 #define DMU_OT_DEFERRED DMU_OT_NONE
1472 #define DMU_OT_TOTAL    DMU_OT_NUMTYPES
1473
1474 #define ZB_TOTAL        ZB_MAXLEVEL
1475
1476 typedef struct zdb_cb {
1477         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1478         uint64_t        zcb_errors[256];
1479         traverse_blk_cache_t *zcb_cache;
1480         int             zcb_readfails;
1481         int             zcb_haderrors;
1482 } zdb_cb_t;
1483
1484 static void
1485 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type)
1486 {
1487         int i, error;
1488
1489         for (i = 0; i < 4; i++) {
1490                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1491                 int t = (i & 1) ? type : DMU_OT_TOTAL;
1492                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1493
1494                 zb->zb_asize += BP_GET_ASIZE(bp);
1495                 zb->zb_lsize += BP_GET_LSIZE(bp);
1496                 zb->zb_psize += BP_GET_PSIZE(bp);
1497                 zb->zb_count++;
1498         }
1499
1500         if (dump_opt['S']) {
1501                 boolean_t print_sig;
1502
1503                 print_sig  = !zdb_sig_user_data || (BP_GET_LEVEL(bp) == 0 &&
1504                     BP_GET_TYPE(bp) == DMU_OT_PLAIN_FILE_CONTENTS);
1505
1506                 if (BP_GET_CHECKSUM(bp) < zdb_sig_cksumalg)
1507                         print_sig = B_FALSE;
1508
1509                 if (print_sig) {
1510                         (void) printf("%llu\t%lld\t%lld\t%s\t%s\t%s\t"
1511                             "%llx:%llx:%llx:%llx\n",
1512                             (u_longlong_t)BP_GET_LEVEL(bp),
1513                             (longlong_t)BP_GET_PSIZE(bp),
1514                             (longlong_t)BP_GET_NDVAS(bp),
1515                             dmu_ot[BP_GET_TYPE(bp)].ot_name,
1516                             zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1517                             zio_compress_table[BP_GET_COMPRESS(bp)].ci_name,
1518                             (u_longlong_t)bp->blk_cksum.zc_word[0],
1519                             (u_longlong_t)bp->blk_cksum.zc_word[1],
1520                             (u_longlong_t)bp->blk_cksum.zc_word[2],
1521                             (u_longlong_t)bp->blk_cksum.zc_word[3]);
1522                 }
1523         }
1524
1525         if (dump_opt['L'])
1526                 return;
1527
1528         error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark);
1529
1530         if (error == 0)
1531                 return;
1532
1533         if (error == EAGAIN)
1534                 (void) fatal("double-allocation, bp=%p", bp);
1535
1536         if (error == ESTALE)
1537                 (void) fatal("reference to freed block, bp=%p", bp);
1538
1539         (void) fatal("fatal error %d in bp %p", error, bp);
1540 }
1541
1542 static int
1543 zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg)
1544 {
1545         zbookmark_t *zb = &bc->bc_bookmark;
1546         zdb_cb_t *zcb = arg;
1547         blkptr_t *bp = &bc->bc_blkptr;
1548         dmu_object_type_t type = BP_GET_TYPE(bp);
1549         char blkbuf[BP_SPRINTF_LEN];
1550         int error = 0;
1551
1552         if (bc->bc_errno) {
1553                 if (zcb->zcb_readfails++ < 10 && dump_opt['L']) {
1554                         zdb_refresh_ubsync(spa);
1555                         error = EAGAIN;
1556                 } else {
1557                         zcb->zcb_haderrors = 1;
1558                         zcb->zcb_errors[bc->bc_errno]++;
1559                         error = ERESTART;
1560                 }
1561
1562                 if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno))
1563                         sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1564                 else
1565                         blkbuf[0] = '\0';
1566
1567                 if (!dump_opt['S']) {
1568                         (void) printf("zdb_blkptr_cb: Got error %d reading "
1569                             "<%llu, %llu, %lld, %llx> %s -- %s\n",
1570                             bc->bc_errno,
1571                             (u_longlong_t)zb->zb_objset,
1572                             (u_longlong_t)zb->zb_object,
1573                             (u_longlong_t)zb->zb_level,
1574                             (u_longlong_t)zb->zb_blkid,
1575                             blkbuf,
1576                             error == EAGAIN ? "retrying" : "skipping");
1577                 }
1578
1579                 return (error);
1580         }
1581
1582         zcb->zcb_readfails = 0;
1583
1584         ASSERT(!BP_IS_HOLE(bp));
1585
1586         if (dump_opt['b'] >= 4) {
1587                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1588                 (void) printf("objset %llu object %llu offset 0x%llx %s\n",
1589                     (u_longlong_t)zb->zb_objset,
1590                     (u_longlong_t)zb->zb_object,
1591                     (u_longlong_t)blkid2offset(bc->bc_dnode,
1592                     zb->zb_level, zb->zb_blkid), blkbuf);
1593         }
1594
1595         zdb_count_block(spa, zcb, bp, type);
1596
1597         return (0);
1598 }
1599
1600 static int
1601 dump_block_stats(spa_t *spa)
1602 {
1603         traverse_handle_t *th;
1604         zdb_cb_t zcb = { 0 };
1605         traverse_blk_cache_t dummy_cache = { 0 };
1606         zdb_blkstats_t *zb, *tzb;
1607         uint64_t alloc, space, logalloc;
1608         vdev_t *rvd = spa->spa_root_vdev;
1609         int leaks = 0;
1610         int advance = zdb_advance;
1611         int c, e, flags;
1612
1613         zcb.zcb_cache = &dummy_cache;
1614
1615         if (dump_opt['c'] || dump_opt['S'])
1616                 advance |= ADVANCE_DATA;
1617
1618         advance |= ADVANCE_PRUNE | ADVANCE_ZIL;
1619
1620         if (!dump_opt['S']) {
1621                 (void) printf("\nTraversing all blocks to %sverify"
1622                     " nothing leaked ...\n",
1623                     dump_opt['c'] ? "verify checksums and " : "");
1624         }
1625
1626         /*
1627          * Load all space maps.  As we traverse the pool, if we find a block
1628          * that's not in its space map, that indicates a double-allocation,
1629          * reference to a freed block, or an unclaimed block.  Otherwise we
1630          * remove the block from the space map.  If the space maps are not
1631          * empty when we're done, that indicates leaked blocks.
1632          */
1633         if (!dump_opt['L'])
1634                 zdb_space_map_load(spa);
1635
1636         /*
1637          * If there's a deferred-free bplist, process that first.
1638          */
1639         if (spa->spa_sync_bplist_obj != 0) {
1640                 bplist_t *bpl = &spa->spa_sync_bplist;
1641                 blkptr_t blk;
1642                 uint64_t itor = 0;
1643
1644                 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1645                     spa->spa_sync_bplist_obj));
1646
1647                 while (bplist_iterate(bpl, &itor, &blk) == 0) {
1648                         if (dump_opt['b'] >= 4) {
1649                                 char blkbuf[BP_SPRINTF_LEN];
1650                                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1651                                 (void) printf("[%s] %s\n",
1652                                     "deferred free", blkbuf);
1653                         }
1654                         zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1655                 }
1656
1657                 bplist_close(bpl);
1658         }
1659
1660         /*
1661          * Now traverse the pool.  If we're reading all data to verify
1662          * checksums, do a scrubbing read so that we validate all copies.
1663          */
1664         flags = ZIO_FLAG_CANFAIL;
1665         if (advance & ADVANCE_DATA)
1666                 flags |= ZIO_FLAG_SCRUB;
1667         th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags);
1668         th->th_noread = zdb_noread;
1669
1670         traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES);
1671
1672         while (traverse_more(th) == EAGAIN)
1673                 continue;
1674
1675         traverse_fini(th);
1676
1677         if (zcb.zcb_haderrors && !dump_opt['S']) {
1678                 (void) printf("\nError counts:\n\n");
1679                 (void) printf("\t%5s  %s\n", "errno", "count");
1680                 for (e = 0; e < 256; e++) {
1681                         if (zcb.zcb_errors[e] != 0) {
1682                                 (void) printf("\t%5d  %llu\n",
1683                                     e, (u_longlong_t)zcb.zcb_errors[e]);
1684                         }
1685                 }
1686         }
1687
1688         /*
1689          * Report any leaked segments.
1690          */
1691         if (!dump_opt['L'])
1692                 zdb_space_map_unload(spa);
1693
1694         /*
1695          * If we're interested in printing out the blkptr signatures,
1696          * return now as we don't print out anything else (including
1697          * errors and leaks).
1698          */
1699         if (dump_opt['S'])
1700                 return (zcb.zcb_haderrors ? 3 : 0);
1701
1702         if (dump_opt['L'])
1703                 (void) printf("\n\n *** Live pool traversal; "
1704                     "block counts are only approximate ***\n\n");
1705
1706         alloc = spa_get_alloc(spa);
1707         space = spa_get_space(spa);
1708
1709         /*
1710          * Log blocks allocated from a separate log device don't count
1711          * as part of the normal pool space; factor them in here.
1712          */
1713         logalloc = 0;
1714
1715         for (c = 0; c < rvd->vdev_children; c++)
1716                 if (rvd->vdev_child[c]->vdev_islog)
1717                         logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc;
1718
1719         tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
1720
1721         if (tzb->zb_asize == alloc + logalloc) {
1722                 (void) printf("\n\tNo leaks (block sum matches space"
1723                     " maps exactly)\n");
1724         } else {
1725                 (void) printf("block traversal size %llu != alloc %llu "
1726                     "(leaked %lld)\n",
1727                     (u_longlong_t)tzb->zb_asize,
1728                     (u_longlong_t)alloc + logalloc,
1729                     (u_longlong_t)(alloc + logalloc - tzb->zb_asize));
1730                 leaks = 1;
1731         }
1732
1733         if (tzb->zb_count == 0)
1734                 return (2);
1735
1736         (void) printf("\n");
1737         (void) printf("\tbp count:      %10llu\n",
1738             (u_longlong_t)tzb->zb_count);
1739         (void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1740             (u_longlong_t)tzb->zb_lsize,
1741             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1742         (void) printf("\tbp physical:   %10llu\t avg:"
1743             " %6llu\tcompression: %6.2f\n",
1744             (u_longlong_t)tzb->zb_psize,
1745             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1746             (double)tzb->zb_lsize / tzb->zb_psize);
1747         (void) printf("\tbp allocated:  %10llu\t avg:"
1748             " %6llu\tcompression: %6.2f\n",
1749             (u_longlong_t)tzb->zb_asize,
1750             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1751             (double)tzb->zb_lsize / tzb->zb_asize);
1752         (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1753             (u_longlong_t)alloc, 100.0 * alloc / space);
1754
1755         if (dump_opt['b'] >= 2) {
1756                 int l, t, level;
1757                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1758                     "\t  avg\t comp\t%%Total\tType\n");
1759
1760                 for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1761                         char csize[6], lsize[6], psize[6], asize[6], avg[6];
1762                         char *typename;
1763
1764                         typename = t == DMU_OT_DEFERRED ? "deferred free" :
1765                             t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1766
1767                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1768                                 (void) printf("%6s\t%5s\t%5s\t%5s"
1769                                     "\t%5s\t%5s\t%6s\t%s\n",
1770                                     "-",
1771                                     "-",
1772                                     "-",
1773                                     "-",
1774                                     "-",
1775                                     "-",
1776                                     "-",
1777                                     typename);
1778                                 continue;
1779                         }
1780
1781                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
1782                                 level = (l == -1 ? ZB_TOTAL : l);
1783                                 zb = &zcb.zcb_type[level][t];
1784
1785                                 if (zb->zb_asize == 0)
1786                                         continue;
1787
1788                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1789                                         continue;
1790
1791                                 if (level == 0 && zb->zb_asize ==
1792                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1793                                         continue;
1794
1795                                 nicenum(zb->zb_count, csize);
1796                                 nicenum(zb->zb_lsize, lsize);
1797                                 nicenum(zb->zb_psize, psize);
1798                                 nicenum(zb->zb_asize, asize);
1799                                 nicenum(zb->zb_asize / zb->zb_count, avg);
1800
1801                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1802                                     "\t%5.2f\t%6.2f\t",
1803                                     csize, lsize, psize, asize, avg,
1804                                     (double)zb->zb_lsize / zb->zb_psize,
1805                                     100.0 * zb->zb_asize / tzb->zb_asize);
1806
1807                                 if (level == ZB_TOTAL)
1808                                         (void) printf("%s\n", typename);
1809                                 else
1810                                         (void) printf("    L%d %s\n",
1811                                             level, typename);
1812                         }
1813                 }
1814         }
1815
1816         (void) printf("\n");
1817
1818         if (leaks)
1819                 return (2);
1820
1821         if (zcb.zcb_haderrors)
1822                 return (3);
1823
1824         return (0);
1825 }
1826
1827 static void
1828 dump_zpool(spa_t *spa)
1829 {
1830         dsl_pool_t *dp = spa_get_dsl(spa);
1831         int rc = 0;
1832
1833         spa_config_enter(spa, RW_READER, FTAG);
1834
1835         if (dump_opt['u'])
1836                 dump_uberblock(&spa->spa_uberblock);
1837
1838         if (dump_opt['d'] || dump_opt['i']) {
1839                 dump_dir(dp->dp_meta_objset);
1840                 if (dump_opt['d'] >= 3) {
1841                         dump_bplist(dp->dp_meta_objset,
1842                             spa->spa_sync_bplist_obj, "Deferred frees");
1843                         dump_dtl(spa->spa_root_vdev, 0);
1844                         dump_metaslabs(spa);
1845                 }
1846                 (void) dmu_objset_find(spa->spa_name, dump_one_dir, NULL,
1847                     DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1848         }
1849
1850         if (dump_opt['b'] || dump_opt['c'] || dump_opt['S'])
1851                 rc = dump_block_stats(spa);
1852
1853         if (dump_opt['s'])
1854                 show_pool_stats(spa);
1855
1856         spa_config_exit(spa, FTAG);
1857
1858         if (rc != 0)
1859                 exit(rc);
1860 }
1861
1862 #define ZDB_FLAG_CHECKSUM       0x0001
1863 #define ZDB_FLAG_DECOMPRESS     0x0002
1864 #define ZDB_FLAG_BSWAP          0x0004
1865 #define ZDB_FLAG_GBH            0x0008
1866 #define ZDB_FLAG_INDIRECT       0x0010
1867 #define ZDB_FLAG_PHYS           0x0020
1868 #define ZDB_FLAG_RAW            0x0040
1869 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
1870
1871 int flagbits[256];
1872
1873 static void
1874 zdb_print_blkptr(blkptr_t *bp, int flags)
1875 {
1876         dva_t *dva = bp->blk_dva;
1877         int d;
1878
1879         if (flags & ZDB_FLAG_BSWAP)
1880                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1881         /*
1882          * Super-ick warning:  This code is also duplicated in
1883          * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1884          * replication, too.
1885          */
1886         for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1887                 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1888                     (longlong_t)DVA_GET_VDEV(&dva[d]),
1889                     (longlong_t)DVA_GET_OFFSET(&dva[d]));
1890                 (void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1891                     "ASIZE: %llx\n", d,
1892                     DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1893                     (longlong_t)DVA_GET_GRID(&dva[d]),
1894                     (longlong_t)DVA_GET_ASIZE(&dva[d]));
1895                 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1896                     (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1897                     (longlong_t)DVA_GET_OFFSET(&dva[d]),
1898                     (longlong_t)BP_GET_PSIZE(bp),
1899                     BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1900                     !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1901                     "d" : "",
1902                     DVA_GET_GANG(&dva[d]) ? "g" : "",
1903                     BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1904         }
1905         (void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1906             (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1907         (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1908             BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1909             dmu_ot[BP_GET_TYPE(bp)].ot_name);
1910         (void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1911             (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1912             (u_longlong_t)bp->blk_fill);
1913         (void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1914             zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1915             zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1916         (void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1917             (u_longlong_t)bp->blk_cksum.zc_word[0],
1918             (u_longlong_t)bp->blk_cksum.zc_word[1],
1919             (u_longlong_t)bp->blk_cksum.zc_word[2],
1920             (u_longlong_t)bp->blk_cksum.zc_word[3]);
1921 }
1922
1923 static void
1924 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1925 {
1926         int i;
1927
1928         for (i = 0; i < nbps; i++)
1929                 zdb_print_blkptr(&bp[i], flags);
1930 }
1931
1932 static void
1933 zdb_dump_gbh(void *buf, int flags)
1934 {
1935         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1936 }
1937
1938 static void
1939 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1940 {
1941         if (flags & ZDB_FLAG_BSWAP)
1942                 byteswap_uint64_array(buf, size);
1943         (void) write(2, buf, size);
1944 }
1945
1946 static void
1947 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1948 {
1949         uint64_t *d = (uint64_t *)buf;
1950         int nwords = size / sizeof (uint64_t);
1951         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1952         int i, j;
1953         char *hdr, *c;
1954
1955
1956         if (do_bswap)
1957                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1958         else
1959                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1960
1961         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1962
1963         for (i = 0; i < nwords; i += 2) {
1964                 (void) printf("%06llx:  %016llx  %016llx  ",
1965                     (u_longlong_t)(i * sizeof (uint64_t)),
1966                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1967                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1968
1969                 c = (char *)&d[i];
1970                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
1971                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
1972                 (void) printf("\n");
1973         }
1974 }
1975
1976 /*
1977  * There are two acceptable formats:
1978  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
1979  *      child[.child]*    - For example: 0.1.1
1980  *
1981  * The second form can be used to specify arbitrary vdevs anywhere
1982  * in the heirarchy.  For example, in a pool with a mirror of
1983  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1984  */
1985 static vdev_t *
1986 zdb_vdev_lookup(vdev_t *vdev, char *path)
1987 {
1988         char *s, *p, *q;
1989         int i;
1990
1991         if (vdev == NULL)
1992                 return (NULL);
1993
1994         /* First, assume the x.x.x.x format */
1995         i = (int)strtoul(path, &s, 10);
1996         if (s == path || (s && *s != '.' && *s != '\0'))
1997                 goto name;
1998         if (i < 0 || i >= vdev->vdev_children)
1999                 return (NULL);
2000
2001         vdev = vdev->vdev_child[i];
2002         if (*s == '\0')
2003                 return (vdev);
2004         return (zdb_vdev_lookup(vdev, s+1));
2005
2006 name:
2007         for (i = 0; i < vdev->vdev_children; i++) {
2008                 vdev_t *vc = vdev->vdev_child[i];
2009
2010                 if (vc->vdev_path == NULL) {
2011                         vc = zdb_vdev_lookup(vc, path);
2012                         if (vc == NULL)
2013                                 continue;
2014                         else
2015                                 return (vc);
2016                 }
2017
2018                 p = strrchr(vc->vdev_path, '/');
2019                 p = p ? p + 1 : vc->vdev_path;
2020                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2021
2022                 if (strcmp(vc->vdev_path, path) == 0)
2023                         return (vc);
2024                 if (strcmp(p, path) == 0)
2025                         return (vc);
2026                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2027                         return (vc);
2028         }
2029
2030         return (NULL);
2031 }
2032
2033 /*
2034  * Read a block from a pool and print it out.  The syntax of the
2035  * block descriptor is:
2036  *
2037  *      pool:vdev_specifier:offset:size[:flags]
2038  *
2039  *      pool           - The name of the pool you wish to read from
2040  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2041  *      offset         - offset, in hex, in bytes
2042  *      size           - Amount of data to read, in hex, in bytes
2043  *      flags          - A string of characters specifying options
2044  *               b: Decode a blkptr at given offset within block
2045  *              *c: Calculate and display checksums
2046  *              *d: Decompress data before dumping
2047  *               e: Byteswap data before dumping
2048  *              *g: Display data as a gang block header
2049  *              *i: Display as an indirect block
2050  *               p: Do I/O to physical offset
2051  *               r: Dump raw data to stdout
2052  *
2053  *              * = not yet implemented
2054  */
2055 static void
2056 zdb_read_block(char *thing, spa_t **spap)
2057 {
2058         spa_t *spa = *spap;
2059         int flags = 0;
2060         uint64_t offset = 0, size = 0, blkptr_offset = 0;
2061         zio_t *zio;
2062         vdev_t *vd;
2063         void *buf;
2064         char *s, *p, *dup, *spa_name, *vdev, *flagstr;
2065         int i, error, zio_flags;
2066
2067         dup = strdup(thing);
2068         s = strtok(dup, ":");
2069         spa_name = s ? s : "";
2070         s = strtok(NULL, ":");
2071         vdev = s ? s : "";
2072         s = strtok(NULL, ":");
2073         offset = strtoull(s ? s : "", NULL, 16);
2074         s = strtok(NULL, ":");
2075         size = strtoull(s ? s : "", NULL, 16);
2076         s = strtok(NULL, ":");
2077         flagstr = s ? s : "";
2078
2079         s = NULL;
2080         if (size == 0)
2081                 s = "size must not be zero";
2082         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2083                 s = "size must be a multiple of sector size";
2084         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2085                 s = "offset must be a multiple of sector size";
2086         if (s) {
2087                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2088                 free(dup);
2089                 return;
2090         }
2091
2092         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2093                 for (i = 0; flagstr[i]; i++) {
2094                         int bit = flagbits[(uchar_t)flagstr[i]];
2095
2096                         if (bit == 0) {
2097                                 (void) printf("***Invalid flag: %c\n",
2098                                     flagstr[i]);
2099                                 continue;
2100                         }
2101                         flags |= bit;
2102
2103                         /* If it's not something with an argument, keep going */
2104                         if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2105                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2106                                 continue;
2107
2108                         p = &flagstr[i + 1];
2109                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2110                                 blkptr_offset = strtoull(p, &p, 16);
2111                         if (*p != ':' && *p != '\0') {
2112                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2113                                 free(dup);
2114                                 return;
2115                         }
2116                 }
2117         }
2118
2119         if (spa == NULL || spa->spa_name == NULL ||
2120             strcmp(spa->spa_name, spa_name)) {
2121                 if (spa && spa->spa_name)
2122                         spa_close(spa, (void *)zdb_read_block);
2123                 error = spa_open(spa_name, spap, (void *)zdb_read_block);
2124                 if (error)
2125                         fatal("Failed to open pool '%s': %s",
2126                             spa_name, strerror(error));
2127                 spa = *spap;
2128         }
2129
2130         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2131         if (vd == NULL) {
2132                 (void) printf("***Invalid vdev: %s\n", vdev);
2133                 free(dup);
2134                 return;
2135         } else {
2136                 if (vd->vdev_path)
2137                         (void) printf("Found vdev: %s\n", vd->vdev_path);
2138                 else
2139                         (void) printf("Found vdev type: %s\n",
2140                             vd->vdev_ops->vdev_op_type);
2141         }
2142
2143         buf = umem_alloc(size, UMEM_NOFAIL);
2144
2145         zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2146             ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK;
2147
2148         if (flags & ZDB_FLAG_PHYS)
2149                 zio_flags |= ZIO_FLAG_PHYSICAL;
2150
2151         zio = zio_root(spa, NULL, NULL, 0);
2152         /* XXX todo - cons up a BP so RAID-Z will be happy */
2153         zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2154             ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2155         error = zio_wait(zio);
2156
2157         if (error) {
2158                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2159                 goto out;
2160         }
2161
2162         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2163                 zdb_print_blkptr((blkptr_t *)(void *)
2164                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2165         else if (flags & ZDB_FLAG_RAW)
2166                 zdb_dump_block_raw(buf, size, flags);
2167         else if (flags & ZDB_FLAG_INDIRECT)
2168                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2169                     flags);
2170         else if (flags & ZDB_FLAG_GBH)
2171                 zdb_dump_gbh(buf, flags);
2172         else
2173                 zdb_dump_block(thing, buf, size, flags);
2174
2175 out:
2176         umem_free(buf, size);
2177         free(dup);
2178 }
2179
2180 static boolean_t
2181 nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2182 {
2183         char *s;
2184
2185         verify(nvlist_lookup_string(config, name, &s) == 0);
2186         return (strcmp(s, tgt) == 0);
2187 }
2188
2189 static boolean_t
2190 nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2191 {
2192         uint64_t val;
2193
2194         verify(nvlist_lookup_uint64(config, name, &val) == 0);
2195         return (val == tgt);
2196 }
2197
2198 static boolean_t
2199 vdev_child_guid_match(nvlist_t *vdev, uint64_t guid)
2200 {
2201         nvlist_t **child;
2202         uint_t c, children;
2203
2204         verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2205             &child, &children) == 0);
2206         for (c = 0; c < children; ++c)
2207                 if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid))
2208                         return (B_TRUE);
2209         return (B_FALSE);
2210 }
2211
2212 static boolean_t
2213 vdev_child_string_match(nvlist_t *vdev, char *tgt)
2214 {
2215         nvlist_t **child;
2216         uint_t c, children;
2217
2218         verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2219             &child, &children) == 0);
2220         for (c = 0; c < children; ++c) {
2221                 if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) ||
2222                     nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt))
2223                         return (B_TRUE);
2224         }
2225         return (B_FALSE);
2226 }
2227
2228 static boolean_t
2229 vdev_guid_match(nvlist_t *config, uint64_t guid)
2230 {
2231         nvlist_t *nvroot;
2232
2233         verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2234             &nvroot) == 0);
2235
2236         return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) ||
2237             vdev_child_guid_match(nvroot, guid));
2238 }
2239
2240 static boolean_t
2241 vdev_string_match(nvlist_t *config, char *tgt)
2242 {
2243         nvlist_t *nvroot;
2244
2245         verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2246             &nvroot) == 0);
2247
2248         return (vdev_child_string_match(nvroot, tgt));
2249 }
2250
2251 static boolean_t
2252 pool_match(nvlist_t *config, char *tgt)
2253 {
2254         uint64_t guid = strtoull(tgt, NULL, 0);
2255
2256         if (guid != 0) {
2257                 return (
2258                     nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) ||
2259                     vdev_guid_match(config, guid));
2260         } else {
2261                 return (
2262                     nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) ||
2263                     vdev_string_match(config, tgt));
2264         }
2265 }
2266
2267 static int
2268 find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir,
2269     char *cachefile)
2270 {
2271         nvlist_t *pools;
2272         int error = ENOENT;
2273         nvlist_t *match = NULL;
2274
2275         if (vdev_dir != NULL)
2276                 pools = zpool_find_import(g_zfs, 1, &vdev_dir, B_TRUE);
2277         else if (cachefile != NULL)
2278                 pools = zpool_find_import_cached(g_zfs, cachefile, B_TRUE);
2279         else
2280                 pools = zpool_find_import(g_zfs, 0, NULL, B_TRUE);
2281
2282         if (pools != NULL) {
2283                 nvpair_t *elem = NULL;
2284
2285                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2286                         verify(nvpair_value_nvlist(elem, configp) == 0);
2287                         if (pool_match(*configp, pool_id)) {
2288                                 if (match != NULL) {
2289                                         (void) fatal(
2290                                             "More than one matching pool - "
2291                                             "specify guid/devid/device path.");
2292                                 } else {
2293                                         match = *configp;
2294                                         error = 0;
2295                                 }
2296                         }
2297                 }
2298         }
2299
2300         *configp = error ? NULL : match;
2301
2302         return (error);
2303 }
2304
2305 int
2306 main(int argc, char **argv)
2307 {
2308         int i, c;
2309         struct rlimit rl = { 1024, 1024 };
2310         spa_t *spa;
2311         objset_t *os = NULL;
2312         char *endstr;
2313         int dump_all = 1;
2314         int verbose = 0;
2315         int error;
2316         int flag, set;
2317         int exported = 0;
2318         char *vdev_dir = NULL;
2319         char *cachefile = NULL;
2320
2321         (void) setrlimit(RLIMIT_NOFILE, &rl);
2322         (void) enable_extended_FILE_stdio(-1, -1);
2323
2324         dprintf_setup(&argc, argv);
2325
2326         while ((c = getopt(argc, argv, "udibcsvCLO:B:S:U:lRep:")) != -1) {
2327                 switch (c) {
2328                 case 'u':
2329                 case 'd':
2330                 case 'i':
2331                 case 'b':
2332                 case 'c':
2333                 case 's':
2334                 case 'C':
2335                 case 'l':
2336                 case 'R':
2337                         dump_opt[c]++;
2338                         dump_all = 0;
2339                         break;
2340                 case 'L':
2341                         dump_opt[c]++;
2342                         break;
2343                 case 'O':
2344                         endstr = optarg;
2345                         if (endstr[0] == '!') {
2346                                 endstr++;
2347                                 set = 0;
2348                         } else {
2349                                 set = 1;
2350                         }
2351                         if (strcmp(endstr, "post") == 0) {
2352                                 flag = ADVANCE_PRE;
2353                                 set = !set;
2354                         } else if (strcmp(endstr, "pre") == 0) {
2355                                 flag = ADVANCE_PRE;
2356                         } else if (strcmp(endstr, "prune") == 0) {
2357                                 flag = ADVANCE_PRUNE;
2358                         } else if (strcmp(endstr, "data") == 0) {
2359                                 flag = ADVANCE_DATA;
2360                         } else if (strcmp(endstr, "holes") == 0) {
2361                                 flag = ADVANCE_HOLES;
2362                         } else {
2363                                 usage();
2364                         }
2365                         if (set)
2366                                 zdb_advance |= flag;
2367                         else
2368                                 zdb_advance &= ~flag;
2369                         break;
2370                 case 'B':
2371                         endstr = optarg - 1;
2372                         zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0);
2373                         zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0);
2374                         zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0);
2375                         zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16);
2376                         (void) printf("simulating bad block "
2377                             "<%llu, %llu, %lld, %llx>\n",
2378                             (u_longlong_t)zdb_noread.zb_objset,
2379                             (u_longlong_t)zdb_noread.zb_object,
2380                             (u_longlong_t)zdb_noread.zb_level,
2381                             (u_longlong_t)zdb_noread.zb_blkid);
2382                         break;
2383                 case 'v':
2384                         verbose++;
2385                         break;
2386                 case 'U':
2387                         cachefile = optarg;
2388                         break;
2389                 case 'e':
2390                         exported = 1;
2391                         break;
2392                 case 'p':
2393                         vdev_dir = optarg;
2394                         break;
2395                 case 'S':
2396                         dump_opt[c]++;
2397                         dump_all = 0;
2398                         zdb_sig_user_data = (strncmp(optarg, "user:", 5) == 0);
2399                         if (!zdb_sig_user_data && strncmp(optarg, "all:", 4))
2400                                 usage();
2401                         endstr = strchr(optarg, ':') + 1;
2402                         if (strcmp(endstr, "fletcher2") == 0)
2403                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2404                         else if (strcmp(endstr, "fletcher4") == 0)
2405                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_4;
2406                         else if (strcmp(endstr, "sha256") == 0)
2407                                 zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
2408                         else if (strcmp(endstr, "all") == 0)
2409                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2410                         else
2411                                 usage();
2412                         break;
2413                 default:
2414                         usage();
2415                         break;
2416                 }
2417         }
2418
2419         if (vdev_dir != NULL && exported == 0)
2420                 (void) fatal("-p option requires use of -e\n");
2421
2422         kernel_init(FREAD);
2423         g_zfs = libzfs_init();
2424         ASSERT(g_zfs != NULL);
2425
2426         /*
2427          * Disable vdev caching.  If we don't do this, live pool traversal
2428          * won't make progress because it will never see disk updates.
2429          */
2430         zfs_vdev_cache_size = 0;
2431
2432         for (c = 0; c < 256; c++) {
2433                 if (dump_all && c != 'L' && c != 'l' && c != 'R')
2434                         dump_opt[c] = 1;
2435                 if (dump_opt[c])
2436                         dump_opt[c] += verbose;
2437         }
2438
2439         argc -= optind;
2440         argv += optind;
2441
2442         if (argc < 1) {
2443                 if (dump_opt['C']) {
2444                         dump_config(NULL);
2445                         return (0);
2446                 }
2447                 usage();
2448         }
2449
2450         if (dump_opt['l']) {
2451                 dump_label(argv[0]);
2452                 return (0);
2453         }
2454
2455         if (dump_opt['R']) {
2456                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2457                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
2458                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2459                 flagbits['e'] = ZDB_FLAG_BSWAP;
2460                 flagbits['g'] = ZDB_FLAG_GBH;
2461                 flagbits['i'] = ZDB_FLAG_INDIRECT;
2462                 flagbits['p'] = ZDB_FLAG_PHYS;
2463                 flagbits['r'] = ZDB_FLAG_RAW;
2464
2465                 spa = NULL;
2466                 while (argv[0]) {
2467                         zdb_read_block(argv[0], &spa);
2468                         argv++;
2469                         argc--;
2470                 }
2471                 if (spa)
2472                         spa_close(spa, (void *)zdb_read_block);
2473                 return (0);
2474         }
2475
2476         if (dump_opt['C'])
2477                 dump_config(argv[0]);
2478
2479         if (exported == 0 && cachefile == NULL) {
2480                 if (strchr(argv[0], '/') != NULL) {
2481                         error = dmu_objset_open(argv[0], DMU_OST_ANY,
2482                             DS_MODE_STANDARD | DS_MODE_READONLY, &os);
2483                 } else {
2484                         error = spa_open(argv[0], &spa, FTAG);
2485                 }
2486         } else {
2487                 /*
2488                  * Check to see if the name refers to an exported zpool
2489                  */
2490                 nvlist_t *exported_conf = NULL;
2491
2492                 error = find_exported_zpool(argv[0], &exported_conf, vdev_dir,
2493                     cachefile);
2494                 if (error == 0) {
2495                         nvlist_t *nvl = NULL;
2496
2497                         if (vdev_dir != NULL) {
2498                                 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2499                                         error = ENOMEM;
2500                                 else if (nvlist_add_string(nvl,
2501                                     zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2502                                     vdev_dir) != 0)
2503                                         error = ENOMEM;
2504                         }
2505
2506                         if (error == 0)
2507                                 error = spa_import(argv[0], exported_conf, nvl);
2508                         if (error == 0)
2509                                 error = spa_open(argv[0], &spa, FTAG);
2510
2511                         nvlist_free(nvl);
2512                 }
2513         }
2514
2515         if (error)
2516                 fatal("can't open %s: %s", argv[0], strerror(error));
2517
2518         argv++;
2519         if (--argc > 0) {
2520                 zopt_objects = argc;
2521                 zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2522                 for (i = 0; i < zopt_objects; i++) {
2523                         errno = 0;
2524                         zopt_object[i] = strtoull(argv[i], NULL, 0);
2525                         if (zopt_object[i] == 0 && errno != 0)
2526                                 fatal("bad object number %s: %s",
2527                                     argv[i], strerror(errno));
2528                 }
2529         }
2530
2531         if (os != NULL) {
2532                 dump_dir(os);
2533                 dmu_objset_close(os);
2534         } else {
2535                 dump_zpool(spa);
2536                 spa_close(spa, FTAG);
2537         }
2538
2539         fuid_table_destroy();
2540
2541         libzfs_fini(g_zfs);
2542         kernel_fini();
2543
2544         return (0);
2545 }