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

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
  25  */
  26
  27 #include <stdio.h>
  28 #include <unistd.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/zfs_sa.h>
  40 #include <sys/sa.h>
  41 #include <sys/sa_impl.h>
  42 #include <sys/vdev.h>
  43 #include <sys/vdev_impl.h>
  44 #include <sys/metaslab_impl.h>
  45 #include <sys/dmu_objset.h>
  46 #include <sys/dsl_dir.h>
  47 #include <sys/dsl_dataset.h>
  48 #include <sys/dsl_pool.h>
  49 #include <sys/dbuf.h>
  50 #include <sys/zil.h>
  51 #include <sys/zil_impl.h>
  52 #include <sys/stat.h>
  53 #include <sys/resource.h>
  54 #include <sys/dmu_traverse.h>
  55 #include <sys/zio_checksum.h>
  56 #include <sys/zio_compress.h>
  57 #include <sys/zfs_fuid.h>
  58 #include <sys/arc.h>
  59 #include <sys/ddt.h>
  60 #include <sys/zfeature.h>
  61 #include <zfs_comutil.h>
  62 #undef ZFS_MAXNAMELEN
  63 #undef verify
  64 #include <libzfs.h>
  65
  66 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?        \
  67         zio_compress_table[(idx)].ci_name : "UNKNOWN")
  68 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?        \
  69         zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  70 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?     \
  71         dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?  \
  72         dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
  73 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :             \
  74         (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
  75         DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
  76
  77 #ifndef lint
  78 extern boolean_t zfs_recover;
  79 #else
  80 boolean_t zfs_recover;
  81 #endif
  82
  83 const char cmdname[] = "zdb";
  84 uint8_t dump_opt[256];
  85
  86 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  87
  88 extern void dump_intent_log(zilog_t *);
  89 uint64_t *zopt_object = NULL;
  90 int zopt_objects = 0;
  91 libzfs_handle_t *g_zfs;
  92 uint64_t max_inflight = 200;
  93
  94 /*
  95  * These libumem hooks provide a reasonable set of defaults for the allocator's
  96  * debugging facilities.
  97  */
  98 const char *
  99 _umem_debug_init()
 100 {
 101         return ("default,verbose"); /* $UMEM_DEBUG setting */
 102 }
 103
 104 const char *
 105 _umem_logging_init(void)
 106 {
 107         return ("fail,contents"); /* $UMEM_LOGGING setting */
 108 }
 109
 110 static void
 111 usage(void)
 112 {
 113         (void) fprintf(stderr,
 114             "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
 115             "[-U config] [-M inflight I/Os] [-x dumpdir] poolname [object...]\n"
 116             "       %s [-divPA] [-e -p path...] [-U config] dataset "
 117             "[object...]\n"
 118             "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
 119             "poolname [vdev [metaslab...]]\n"
 120             "       %s -R [-A] [-e [-p path...]] poolname "
 121             "vdev:offset:size[:flags]\n"
 122             "       %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
 123             "       %s -l [-uA] device\n"
 124             "       %s -C [-A] [-U config]\n\n",
 125             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 126
 127         (void) fprintf(stderr, "    Dataset name must include at least one "
 128             "separator character '/' or '@'\n");
 129         (void) fprintf(stderr, "    If dataset name is specified, only that "
 130             "dataset is dumped\n");
 131         (void) fprintf(stderr, "    If object numbers are specified, only "
 132             "those objects are dumped\n\n");
 133         (void) fprintf(stderr, "    Options to control amount of output:\n");
 134         (void) fprintf(stderr, "        -u uberblock\n");
 135         (void) fprintf(stderr, "        -d dataset(s)\n");
 136         (void) fprintf(stderr, "        -i intent logs\n");
 137         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 138         (void) fprintf(stderr, "        -h pool history\n");
 139         (void) fprintf(stderr, "        -b block statistics\n");
 140         (void) fprintf(stderr, "        -m metaslabs\n");
 141         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 142             "all data) blocks\n");
 143         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 144         (void) fprintf(stderr, "        -D dedup statistics\n");
 145         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 146         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 147         (void) fprintf(stderr, "        -l dump label contents\n");
 148         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 149             "load spacemaps)\n");
 150         (void) fprintf(stderr, "        -R read and display block from a "
 151             "device\n\n");
 152         (void) fprintf(stderr, "    Below options are intended for use "
 153             "with other options:\n");
 154         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 155             "panic recovery (-AA) or both (-AAA)\n");
 156         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 157             "safe range of transaction groups\n");
 158         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 159             "cachefile\n");
 160         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 161             "work with dataset)\n");
 162         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 163             "has altroot/not in a cachefile\n");
 164         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 165             "-e to specify path to vdev dir\n");
 166         (void) fprintf(stderr, "        -x <dumpdir> -- "
 167             "dump all read blocks into specified directory\n");
 168         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 169         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 170             "searching for uberblocks\n");
 171         (void) fprintf(stderr, "        -M <number of inflight I/Os> -- "
 172             "specify the maximum number of "
 173             "checksumming I/Os [default is 200]\n");
 174         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 175             "to make only that option verbose\n");
 176         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 177         exit(1);
 178 }
 179
 180 /*
 181  * Called for usage errors that are discovered after a call to spa_open(),
 182  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 183  */
 184
 185 static void
 186 fatal(const char *fmt, ...)
 187 {
 188         va_list ap;
 189
 190         va_start(ap, fmt);
 191         (void) fprintf(stderr, "%s: ", cmdname);
 192         (void) vfprintf(stderr, fmt, ap);
 193         va_end(ap);
 194         (void) fprintf(stderr, "\n");
 195
 196         exit(1);
 197 }
 198
 199 /* ARGSUSED */
 200 static void
 201 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 202 {
 203         nvlist_t *nv;
 204         size_t nvsize = *(uint64_t *)data;
 205         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 206
 207         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 208
 209         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 210
 211         umem_free(packed, nvsize);
 212
 213         dump_nvlist(nv, 8);
 214
 215         nvlist_free(nv);
 216 }
 217
 218 /* ARGSUSED */
 219 static void
 220 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
 221 {
 222         spa_history_phys_t *shp = data;
 223
 224         if (shp == NULL)
 225                 return;
 226
 227         (void) printf("\t\tpool_create_len = %llu\n",
 228             (u_longlong_t)shp->sh_pool_create_len);
 229         (void) printf("\t\tphys_max_off = %llu\n",
 230             (u_longlong_t)shp->sh_phys_max_off);
 231         (void) printf("\t\tbof = %llu\n",
 232             (u_longlong_t)shp->sh_bof);
 233         (void) printf("\t\teof = %llu\n",
 234             (u_longlong_t)shp->sh_eof);
 235         (void) printf("\t\trecords_lost = %llu\n",
 236             (u_longlong_t)shp->sh_records_lost);
 237 }
 238
 239 static void
 240 zdb_nicenum(uint64_t num, char *buf)
 241 {
 242         if (dump_opt['P'])
 243                 (void) sprintf(buf, "%llu", (longlong_t)num);
 244         else
 245                 nicenum(num, buf);
 246 }
 247
 248 const char histo_stars[] = "****************************************";
 249 const int histo_width = sizeof (histo_stars) - 1;
 250
 251 static void
 252 dump_histogram(const uint64_t *histo, int size, int offset)
 253 {
 254         int i;
 255         int minidx = size - 1;
 256         int maxidx = 0;
 257         uint64_t max = 0;
 258
 259         for (i = 0; i < size; i++) {
 260                 if (histo[i] > max)
 261                         max = histo[i];
 262                 if (histo[i] > 0 && i > maxidx)
 263                         maxidx = i;
 264                 if (histo[i] > 0 && i < minidx)
 265                         minidx = i;
 266         }
 267
 268         if (max < histo_width)
 269                 max = histo_width;
 270
 271         for (i = minidx; i <= maxidx; i++) {
 272                 (void) printf("\t\t\t%3u: %6llu %s\n",
 273                     i + offset, (u_longlong_t)histo[i],
 274                     &histo_stars[(max - histo[i]) * histo_width / max]);
 275         }
 276 }
 277
 278 static void
 279 dump_zap_stats(objset_t *os, uint64_t object)
 280 {
 281         int error;
 282         zap_stats_t zs;
 283
 284         error = zap_get_stats(os, object, &zs);
 285         if (error)
 286                 return;
 287
 288         if (zs.zs_ptrtbl_len == 0) {
 289                 ASSERT(zs.zs_num_blocks == 1);
 290                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 291                     (u_longlong_t)zs.zs_blocksize,
 292                     (u_longlong_t)zs.zs_num_entries);
 293                 return;
 294         }
 295
 296         (void) printf("\tFat ZAP stats:\n");
 297
 298         (void) printf("\t\tPointer table:\n");
 299         (void) printf("\t\t\t%llu elements\n",
 300             (u_longlong_t)zs.zs_ptrtbl_len);
 301         (void) printf("\t\t\tzt_blk: %llu\n",
 302             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 303         (void) printf("\t\t\tzt_numblks: %llu\n",
 304             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 305         (void) printf("\t\t\tzt_shift: %llu\n",
 306             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 307         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 308             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 309         (void) printf("\t\t\tzt_nextblk: %llu\n",
 310             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 311
 312         (void) printf("\t\tZAP entries: %llu\n",
 313             (u_longlong_t)zs.zs_num_entries);
 314         (void) printf("\t\tLeaf blocks: %llu\n",
 315             (u_longlong_t)zs.zs_num_leafs);
 316         (void) printf("\t\tTotal blocks: %llu\n",
 317             (u_longlong_t)zs.zs_num_blocks);
 318         (void) printf("\t\tzap_block_type: 0x%llx\n",
 319             (u_longlong_t)zs.zs_block_type);
 320         (void) printf("\t\tzap_magic: 0x%llx\n",
 321             (u_longlong_t)zs.zs_magic);
 322         (void) printf("\t\tzap_salt: 0x%llx\n",
 323             (u_longlong_t)zs.zs_salt);
 324
 325         (void) printf("\t\tLeafs with 2^n pointers:\n");
 326         dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
 327
 328         (void) printf("\t\tBlocks with n*5 entries:\n");
 329         dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
 330
 331         (void) printf("\t\tBlocks n/10 full:\n");
 332         dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
 333
 334         (void) printf("\t\tEntries with n chunks:\n");
 335         dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
 336
 337         (void) printf("\t\tBuckets with n entries:\n");
 338         dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
 339 }
 340
 341 /*ARGSUSED*/
 342 static void
 343 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 344 {
 345 }
 346
 347 /*ARGSUSED*/
 348 static void
 349 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 350 {
 351         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 352 }
 353
 354 /*ARGSUSED*/
 355 void
 356 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 357 {
 358 }
 359
 360 /*ARGSUSED*/
 361 static void
 362 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 363 {
 364 }
 365
 366 /*ARGSUSED*/
 367 static void
 368 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 369 {
 370         zap_cursor_t zc;
 371         zap_attribute_t attr;
 372         void *prop;
 373         int i;
 374
 375         dump_zap_stats(os, object);
 376         (void) printf("\n");
 377
 378         for (zap_cursor_init(&zc, os, object);
 379             zap_cursor_retrieve(&zc, &attr) == 0;
 380             zap_cursor_advance(&zc)) {
 381                 (void) printf("\t\t%s = ", attr.za_name);
 382                 if (attr.za_num_integers == 0) {
 383                         (void) printf("\n");
 384                         continue;
 385                 }
 386                 prop = umem_zalloc(attr.za_num_integers *
 387                     attr.za_integer_length, UMEM_NOFAIL);
 388                 (void) zap_lookup(os, object, attr.za_name,
 389                     attr.za_integer_length, attr.za_num_integers, prop);
 390                 if (attr.za_integer_length == 1) {
 391                         (void) printf("%s", (char *)prop);
 392                 } else {
 393                         for (i = 0; i < attr.za_num_integers; i++) {
 394                                 switch (attr.za_integer_length) {
 395                                 case 2:
 396                                         (void) printf("%u ",
 397                                             ((uint16_t *)prop)[i]);
 398                                         break;
 399                                 case 4:
 400                                         (void) printf("%u ",
 401                                             ((uint32_t *)prop)[i]);
 402                                         break;
 403                                 case 8:
 404                                         (void) printf("%lld ",
 405                                             (u_longlong_t)((int64_t *)prop)[i]);
 406                                         break;
 407                                 }
 408                         }
 409                 }
 410                 (void) printf("\n");
 411                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 412         }
 413         zap_cursor_fini(&zc);
 414 }
 415
 416 /*ARGSUSED*/
 417 static void
 418 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 419 {
 420         dump_zap_stats(os, object);
 421         /* contents are printed elsewhere, properly decoded */
 422 }
 423
 424 /*ARGSUSED*/
 425 static void
 426 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 427 {
 428         zap_cursor_t zc;
 429         zap_attribute_t attr;
 430
 431         dump_zap_stats(os, object);
 432         (void) printf("\n");
 433
 434         for (zap_cursor_init(&zc, os, object);
 435             zap_cursor_retrieve(&zc, &attr) == 0;
 436             zap_cursor_advance(&zc)) {
 437                 (void) printf("\t\t%s = ", attr.za_name);
 438                 if (attr.za_num_integers == 0) {
 439                         (void) printf("\n");
 440                         continue;
 441                 }
 442                 (void) printf(" %llx : [%d:%d:%d]\n",
 443                     (u_longlong_t)attr.za_first_integer,
 444                     (int)ATTR_LENGTH(attr.za_first_integer),
 445                     (int)ATTR_BSWAP(attr.za_first_integer),
 446                     (int)ATTR_NUM(attr.za_first_integer));
 447         }
 448         zap_cursor_fini(&zc);
 449 }
 450
 451 /*ARGSUSED*/
 452 static void
 453 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 454 {
 455         zap_cursor_t zc;
 456         zap_attribute_t attr;
 457         uint16_t *layout_attrs;
 458         int i;
 459
 460         dump_zap_stats(os, object);
 461         (void) printf("\n");
 462
 463         for (zap_cursor_init(&zc, os, object);
 464             zap_cursor_retrieve(&zc, &attr) == 0;
 465             zap_cursor_advance(&zc)) {
 466                 (void) printf("\t\t%s = [", attr.za_name);
 467                 if (attr.za_num_integers == 0) {
 468                         (void) printf("\n");
 469                         continue;
 470                 }
 471
 472                 VERIFY(attr.za_integer_length == 2);
 473                 layout_attrs = umem_zalloc(attr.za_num_integers *
 474                     attr.za_integer_length, UMEM_NOFAIL);
 475
 476                 VERIFY(zap_lookup(os, object, attr.za_name,
 477                     attr.za_integer_length,
 478                     attr.za_num_integers, layout_attrs) == 0);
 479
 480                 for (i = 0; i != attr.za_num_integers; i++)
 481                         (void) printf(" %d ", (int)layout_attrs[i]);
 482                 (void) printf("]\n");
 483                 umem_free(layout_attrs,
 484                     attr.za_num_integers * attr.za_integer_length);
 485         }
 486         zap_cursor_fini(&zc);
 487 }
 488
 489 /*ARGSUSED*/
 490 static void
 491 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 492 {
 493         zap_cursor_t zc;
 494         zap_attribute_t attr;
 495         const char *typenames[] = {
 496                 /* 0 */ "not specified",
 497                 /* 1 */ "FIFO",
 498                 /* 2 */ "Character Device",
 499                 /* 3 */ "3 (invalid)",
 500                 /* 4 */ "Directory",
 501                 /* 5 */ "5 (invalid)",
 502                 /* 6 */ "Block Device",
 503                 /* 7 */ "7 (invalid)",
 504                 /* 8 */ "Regular File",
 505                 /* 9 */ "9 (invalid)",
 506                 /* 10 */ "Symbolic Link",
 507                 /* 11 */ "11 (invalid)",
 508                 /* 12 */ "Socket",
 509                 /* 13 */ "Door",
 510                 /* 14 */ "Event Port",
 511                 /* 15 */ "15 (invalid)",
 512         };
 513
 514         dump_zap_stats(os, object);
 515         (void) printf("\n");
 516
 517         for (zap_cursor_init(&zc, os, object);
 518             zap_cursor_retrieve(&zc, &attr) == 0;
 519             zap_cursor_advance(&zc)) {
 520                 (void) printf("\t\t%s = %lld (type: %s)\n",
 521                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 522                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 523         }
 524         zap_cursor_fini(&zc);
 525 }
 526
 527 int
 528 get_dtl_refcount(vdev_t *vd)
 529 {
 530         int refcount = 0;
 531
 532         if (vd->vdev_ops->vdev_op_leaf) {
 533                 space_map_t *sm = vd->vdev_dtl_sm;
 534
 535                 if (sm != NULL &&
 536                     sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 537                         return (1);
 538                 return (0);
 539         }
 540
 541         for (int c = 0; c < vd->vdev_children; c++)
 542                 refcount += get_dtl_refcount(vd->vdev_child[c]);
 543         return (refcount);
 544 }
 545
 546 int
 547 get_metaslab_refcount(vdev_t *vd)
 548 {
 549         int refcount = 0;
 550
 551         if (vd->vdev_top == vd) {
 552                 for (int m = 0; m < vd->vdev_ms_count; m++) {
 553                         space_map_t *sm = vd->vdev_ms[m]->ms_sm;
 554
 555                         if (sm != NULL &&
 556                             sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 557                                 refcount++;
 558                 }
 559         }
 560         for (int c = 0; c < vd->vdev_children; c++)
 561                 refcount += get_metaslab_refcount(vd->vdev_child[c]);
 562
 563         return (refcount);
 564 }
 565
 566 static int
 567 verify_spacemap_refcounts(spa_t *spa)
 568 {
 569         uint64_t expected_refcount = 0;
 570         uint64_t actual_refcount;
 571
 572         (void) feature_get_refcount(spa,
 573             &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
 574             &expected_refcount);
 575         actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
 576         actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
 577
 578         if (expected_refcount != actual_refcount) {
 579                 (void) printf("space map refcount mismatch: expected %lld != "
 580                     "actual %lld\n",
 581                     (longlong_t)expected_refcount,
 582                     (longlong_t)actual_refcount);
 583                 return (2);
 584         }
 585         return (0);
 586 }
 587
 588 static void
 589 dump_spacemap(objset_t *os, space_map_t *sm)
 590 {
 591         uint64_t alloc, offset, entry;
 592         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 593                             "INVALID", "INVALID", "INVALID", "INVALID" };
 594
 595         if (sm == NULL)
 596                 return;
 597
 598         /*
 599          * Print out the freelist entries in both encoded and decoded form.
 600          */
 601         alloc = 0;
 602         for (offset = 0; offset < space_map_length(sm);
 603             offset += sizeof (entry)) {
 604                 uint8_t mapshift = sm->sm_shift;
 605
 606                 VERIFY0(dmu_read(os, space_map_object(sm), offset,
 607                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 608                 if (SM_DEBUG_DECODE(entry)) {
 609
 610                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 611                             (u_longlong_t)(offset / sizeof (entry)),
 612                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 613                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 614                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 615                 } else {
 616                         (void) printf("\t    [%6llu]    %c  range:"
 617                             " %010llx-%010llx  size: %06llx\n",
 618                             (u_longlong_t)(offset / sizeof (entry)),
 619                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 620                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 621                             mapshift) + sm->sm_start),
 622                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 623                             mapshift) + sm->sm_start +
 624                             (SM_RUN_DECODE(entry) << mapshift)),
 625                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 626                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 627                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 628                         else
 629                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 630                 }
 631         }
 632         if (alloc != space_map_allocated(sm)) {
 633                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 634                     "with space map summary (%llu)\n",
 635                     (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
 636         }
 637 }
 638
 639 static void
 640 dump_metaslab_stats(metaslab_t *msp)
 641 {
 642         char maxbuf[32];
 643         range_tree_t *rt = msp->ms_tree;
 644         avl_tree_t *t = &msp->ms_size_tree;
 645         int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
 646
 647         zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
 648
 649         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 650             "segments", avl_numnodes(t), "maxsize", maxbuf,
 651             "freepct", free_pct);
 652         (void) printf("\tIn-memory histogram:\n");
 653         dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 654 }
 655
 656 static void
 657 dump_metaslab(metaslab_t *msp)
 658 {
 659         vdev_t *vd = msp->ms_group->mg_vd;
 660         spa_t *spa = vd->vdev_spa;
 661         space_map_t *sm = msp->ms_sm;
 662         char freebuf[32];
 663
 664         zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
 665
 666         (void) printf(
 667             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 668             (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
 669             (u_longlong_t)space_map_object(sm), freebuf);
 670
 671         if (dump_opt['m'] > 2 && !dump_opt['L']) {
 672                 mutex_enter(&msp->ms_lock);
 673                 metaslab_load_wait(msp);
 674                 if (!msp->ms_loaded) {
 675                         VERIFY0(metaslab_load(msp));
 676                         range_tree_stat_verify(msp->ms_tree);
 677                 }
 678                 dump_metaslab_stats(msp);
 679                 metaslab_unload(msp);
 680                 mutex_exit(&msp->ms_lock);
 681         }
 682
 683         if (dump_opt['m'] > 1 && sm != NULL &&
 684             spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
 685                 /*
 686                  * The space map histogram represents free space in chunks
 687                  * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
 688                  */
 689                 (void) printf("\tOn-disk histogram:\n");
 690                 dump_histogram(sm->sm_phys->smp_histogram,
 691                     SPACE_MAP_HISTOGRAM_SIZE(sm), sm->sm_shift);
 692         }
 693
 694         if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
 695                 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
 696
 697                 mutex_enter(&msp->ms_lock);
 698                 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
 699                 mutex_exit(&msp->ms_lock);
 700         }
 701 }
 702
 703 static void
 704 print_vdev_metaslab_header(vdev_t *vd)
 705 {
 706         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 707             (u_longlong_t)vd->vdev_id,
 708             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 709             "offset", "spacemap", "free");
 710         (void) printf("\t%15s   %19s   %15s   %10s\n",
 711             "---------------", "-------------------",
 712             "---------------", "-------------");
 713 }
 714
 715 static void
 716 dump_metaslabs(spa_t *spa)
 717 {
 718         vdev_t *vd, *rvd = spa->spa_root_vdev;
 719         uint64_t m, c = 0, children = rvd->vdev_children;
 720
 721         (void) printf("\nMetaslabs:\n");
 722
 723         if (!dump_opt['d'] && zopt_objects > 0) {
 724                 c = zopt_object[0];
 725
 726                 if (c >= children)
 727                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 728
 729                 if (zopt_objects > 1) {
 730                         vd = rvd->vdev_child[c];
 731                         print_vdev_metaslab_header(vd);
 732
 733                         for (m = 1; m < zopt_objects; m++) {
 734                                 if (zopt_object[m] < vd->vdev_ms_count)
 735                                         dump_metaslab(
 736                                             vd->vdev_ms[zopt_object[m]]);
 737                                 else
 738                                         (void) fprintf(stderr, "bad metaslab "
 739                                             "number %llu\n",
 740                                             (u_longlong_t)zopt_object[m]);
 741                         }
 742                         (void) printf("\n");
 743                         return;
 744                 }
 745                 children = c + 1;
 746         }
 747         for (; c < children; c++) {
 748                 vd = rvd->vdev_child[c];
 749                 print_vdev_metaslab_header(vd);
 750
 751                 for (m = 0; m < vd->vdev_ms_count; m++)
 752                         dump_metaslab(vd->vdev_ms[m]);
 753                 (void) printf("\n");
 754         }
 755 }
 756
 757 static void
 758 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 759 {
 760         const ddt_phys_t *ddp = dde->dde_phys;
 761         const ddt_key_t *ddk = &dde->dde_key;
 762         char *types[4] = { "ditto", "single", "double", "triple" };
 763         char blkbuf[BP_SPRINTF_LEN];
 764         blkptr_t blk;
 765
 766         for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 767                 if (ddp->ddp_phys_birth == 0)
 768                         continue;
 769                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 770                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
 771                 (void) printf("index %llx refcnt %llu %s %s\n",
 772                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 773                     types[p], blkbuf);
 774         }
 775 }
 776
 777 static void
 778 dump_dedup_ratio(const ddt_stat_t *dds)
 779 {
 780         double rL, rP, rD, D, dedup, compress, copies;
 781
 782         if (dds->dds_blocks == 0)
 783                 return;
 784
 785         rL = (double)dds->dds_ref_lsize;
 786         rP = (double)dds->dds_ref_psize;
 787         rD = (double)dds->dds_ref_dsize;
 788         D = (double)dds->dds_dsize;
 789
 790         dedup = rD / D;
 791         compress = rL / rP;
 792         copies = rD / rP;
 793
 794         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 795             "dedup * compress / copies = %.2f\n\n",
 796             dedup, compress, copies, dedup * compress / copies);
 797 }
 798
 799 static void
 800 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 801 {
 802         char name[DDT_NAMELEN];
 803         ddt_entry_t dde;
 804         uint64_t walk = 0;
 805         dmu_object_info_t doi;
 806         uint64_t count, dspace, mspace;
 807         int error;
 808
 809         error = ddt_object_info(ddt, type, class, &doi);
 810
 811         if (error == ENOENT)
 812                 return;
 813         ASSERT(error == 0);
 814
 815         error = ddt_object_count(ddt, type, class, &count);
 816         ASSERT(error == 0);
 817         if (count == 0)
 818                 return;
 819
 820         dspace = doi.doi_physical_blocks_512 << 9;
 821         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 822
 823         ddt_object_name(ddt, type, class, name);
 824
 825         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 826             name,
 827             (u_longlong_t)count,
 828             (u_longlong_t)(dspace / count),
 829             (u_longlong_t)(mspace / count));
 830
 831         if (dump_opt['D'] < 3)
 832                 return;
 833
 834         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 835
 836         if (dump_opt['D'] < 4)
 837                 return;
 838
 839         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 840                 return;
 841
 842         (void) printf("%s contents:\n\n", name);
 843
 844         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 845                 dump_dde(ddt, &dde, walk);
 846
 847         ASSERT(error == ENOENT);
 848
 849         (void) printf("\n");
 850 }
 851
 852 static void
 853 dump_all_ddts(spa_t *spa)
 854 {
 855         ddt_histogram_t ddh_total = { 0 };
 856         ddt_stat_t dds_total = { 0 };
 857
 858         for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 859                 ddt_t *ddt = spa->spa_ddt[c];
 860                 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
 861                         for (enum ddt_class class = 0; class < DDT_CLASSES;
 862                             class++) {
 863                                 dump_ddt(ddt, type, class);
 864                         }
 865                 }
 866         }
 867
 868         ddt_get_dedup_stats(spa, &dds_total);
 869
 870         if (dds_total.dds_blocks == 0) {
 871                 (void) printf("All DDTs are empty\n");
 872                 return;
 873         }
 874
 875         (void) printf("\n");
 876
 877         if (dump_opt['D'] > 1) {
 878                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
 879                 ddt_get_dedup_histogram(spa, &ddh_total);
 880                 zpool_dump_ddt(&dds_total, &ddh_total);
 881         }
 882
 883         dump_dedup_ratio(&dds_total);
 884 }
 885
 886 static void
 887 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
 888 {
 889         char *prefix = arg;
 890
 891         (void) printf("%s [%llu,%llu) length %llu\n",
 892             prefix,
 893             (u_longlong_t)start,
 894             (u_longlong_t)(start + size),
 895             (u_longlong_t)(size));
 896 }
 897
 898 static void
 899 dump_dtl(vdev_t *vd, int indent)
 900 {
 901         spa_t *spa = vd->vdev_spa;
 902         boolean_t required;
 903         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 904         char prefix[256];
 905
 906         spa_vdev_state_enter(spa, SCL_NONE);
 907         required = vdev_dtl_required(vd);
 908         (void) spa_vdev_state_exit(spa, NULL, 0);
 909
 910         if (indent == 0)
 911                 (void) printf("\nDirty time logs:\n\n");
 912
 913         (void) printf("\t%*s%s [%s]\n", indent, "",
 914             vd->vdev_path ? vd->vdev_path :
 915             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 916             required ? "DTL-required" : "DTL-expendable");
 917
 918         for (int t = 0; t < DTL_TYPES; t++) {
 919                 range_tree_t *rt = vd->vdev_dtl[t];
 920                 if (range_tree_space(rt) == 0)
 921                         continue;
 922                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 923                     indent + 2, "", name[t]);
 924                 mutex_enter(rt->rt_lock);
 925                 range_tree_walk(rt, dump_dtl_seg, prefix);
 926                 mutex_exit(rt->rt_lock);
 927                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 928                         dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
 929         }
 930
 931         for (int c = 0; c < vd->vdev_children; c++)
 932                 dump_dtl(vd->vdev_child[c], indent + 4);
 933 }
 934
 935 /* from spa_history.c: spa_history_create_obj() */
 936 #define HIS_BUF_LEN_DEF (128 << 10)
 937 #define HIS_BUF_LEN_MAX (1 << 30)
 938
 939 static void
 940 dump_history(spa_t *spa)
 941 {
 942         nvlist_t **events = NULL;
 943         char *buf = NULL;
 944         uint64_t bufsize = HIS_BUF_LEN_DEF;
 945         uint64_t resid, len, off = 0;
 946         uint_t num = 0;
 947         int error;
 948         time_t tsec;
 949         struct tm t;
 950         char tbuf[30];
 951         char internalstr[MAXPATHLEN];
 952
 953         if ((buf = malloc(bufsize)) == NULL)
 954                 (void) fprintf(stderr, "Unable to read history: "
 955                     "out of memory\n");
 956         do {
 957                 len = bufsize;
 958
 959                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
 960                         (void) fprintf(stderr, "Unable to read history: "
 961                             "error %d\n", error);
 962                         return;
 963                 }
 964
 965                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
 966                         break;
 967                 off -= resid;
 968
 969                 /*
 970                  * If the history block is too big, double the buffer
 971                  * size and try again.
 972                  */
 973                 if (resid == len) {
 974                         free(buf);
 975                         buf = NULL;
 976
 977                         bufsize <<= 1;
 978                         if ((bufsize >= HIS_BUF_LEN_MAX) ||
 979                             ((buf = malloc(bufsize)) == NULL)) {
 980                                 (void) fprintf(stderr, "Unable to read history: "
 981                                     "out of memory\n");
 982                                 return;
 983                         }
 984                 }
 985         } while (len != 0);
 986         free(buf);
 987
 988         (void) printf("\nHistory:\n");
 989         for (int i = 0; i < num; i++) {
 990                 uint64_t time, txg, ievent;
 991                 char *cmd, *intstr;
 992                 boolean_t printed = B_FALSE;
 993
 994                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
 995                     &time) != 0)
 996                         goto next;
 997                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
 998                     &cmd) != 0) {
 999                         if (nvlist_lookup_uint64(events[i],
1000                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1001                                 goto next;
1002                         verify(nvlist_lookup_uint64(events[i],
1003                             ZPOOL_HIST_TXG, &txg) == 0);
1004                         verify(nvlist_lookup_string(events[i],
1005                             ZPOOL_HIST_INT_STR, &intstr) == 0);
1006                         if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1007                                 goto next;
1008
1009                         (void) snprintf(internalstr,
1010                             sizeof (internalstr),
1011                             "[internal %s txg:%lld] %s",
1012                             zfs_history_event_names[ievent], txg,
1013                             intstr);
1014                         cmd = internalstr;
1015                 }
1016                 tsec = time;
1017                 (void) localtime_r(&tsec, &t);
1018                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1019                 (void) printf("%s %s\n", tbuf, cmd);
1020                 printed = B_TRUE;
1021
1022 next:
1023                 if (dump_opt['h'] > 1) {
1024                         if (!printed)
1025                                 (void) printf("unrecognized record:\n");
1026                         dump_nvlist(events[i], 2);
1027                 }
1028         }
1029 }
1030
1031 /*ARGSUSED*/
1032 static void
1033 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1034 {
1035 }
1036
1037 static uint64_t
1038 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
1039 {
1040         if (dnp == NULL) {
1041                 ASSERT(zb->zb_level < 0);
1042                 if (zb->zb_object == 0)
1043                         return (zb->zb_blkid);
1044                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1045         }
1046
1047         ASSERT(zb->zb_level >= 0);
1048
1049         return ((zb->zb_blkid <<
1050             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1051             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1052 }
1053
1054 static void
1055 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1056 {
1057         const dva_t *dva = bp->blk_dva;
1058         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1059
1060         if (dump_opt['b'] >= 6) {
1061                 snprintf_blkptr(blkbuf, buflen, bp);
1062                 return;
1063         }
1064
1065         if (BP_IS_EMBEDDED(bp)) {
1066                 (void) sprintf(blkbuf,
1067                     "EMBEDDED et=%u %llxL/%llxP B=%llu",
1068                     (int)BPE_GET_ETYPE(bp),
1069                     (u_longlong_t)BPE_GET_LSIZE(bp),
1070                     (u_longlong_t)BPE_GET_PSIZE(bp),
1071                     (u_longlong_t)bp->blk_birth);
1072                 return;
1073         }
1074
1075         blkbuf[0] = '\0';
1076         for (int i = 0; i < ndvas; i++)
1077                 (void) snprintf(blkbuf + strlen(blkbuf),
1078                     buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1079                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1080                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1081                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1082
1083         if (BP_IS_HOLE(bp)) {
1084                 (void) snprintf(blkbuf + strlen(blkbuf),
1085                     buflen - strlen(blkbuf), "B=%llu",
1086                     (u_longlong_t)bp->blk_birth);
1087         } else {
1088                 (void) snprintf(blkbuf + strlen(blkbuf),
1089                     buflen - strlen(blkbuf),
1090                     "%llxL/%llxP F=%llu B=%llu/%llu",
1091                     (u_longlong_t)BP_GET_LSIZE(bp),
1092                     (u_longlong_t)BP_GET_PSIZE(bp),
1093                     (u_longlong_t)BP_GET_FILL(bp),
1094                     (u_longlong_t)bp->blk_birth,
1095                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1096         }
1097 }
1098
1099 static void
1100 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
1101     const dnode_phys_t *dnp)
1102 {
1103         char blkbuf[BP_SPRINTF_LEN];
1104         int l;
1105
1106         if (!BP_IS_EMBEDDED(bp)) {
1107                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1108                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1109         }
1110
1111         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1112
1113         ASSERT(zb->zb_level >= 0);
1114
1115         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1116                 if (l == zb->zb_level) {
1117                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1118                 } else {
1119                         (void) printf(" ");
1120                 }
1121         }
1122
1123         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1124         (void) printf("%s\n", blkbuf);
1125 }
1126
1127 static int
1128 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1129     blkptr_t *bp, const zbookmark_t *zb)
1130 {
1131         int err = 0;
1132
1133         if (bp->blk_birth == 0)
1134                 return (0);
1135
1136         print_indirect(bp, zb, dnp);
1137
1138         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1139                 uint32_t flags = ARC_WAIT;
1140                 int i;
1141                 blkptr_t *cbp;
1142                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1143                 arc_buf_t *buf;
1144                 uint64_t fill = 0;
1145
1146                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1147                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1148                 if (err)
1149                         return (err);
1150                 ASSERT(buf->b_data);
1151
1152                 /* recursively visit blocks below this */
1153                 cbp = buf->b_data;
1154                 for (i = 0; i < epb; i++, cbp++) {
1155                         zbookmark_t czb;
1156
1157                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1158                             zb->zb_level - 1,
1159                             zb->zb_blkid * epb + i);
1160                         err = visit_indirect(spa, dnp, cbp, &czb);
1161                         if (err)
1162                                 break;
1163                         fill += BP_GET_FILL(cbp);
1164                 }
1165                 if (!err)
1166                         ASSERT3U(fill, ==, BP_GET_FILL(bp));
1167                 (void) arc_buf_remove_ref(buf, &buf);
1168         }
1169
1170         return (err);
1171 }
1172
1173 /*ARGSUSED*/
1174 static void
1175 dump_indirect(dnode_t *dn)
1176 {
1177         dnode_phys_t *dnp = dn->dn_phys;
1178         int j;
1179         zbookmark_t czb;
1180
1181         (void) printf("Indirect blocks:\n");
1182
1183         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1184             dn->dn_object, dnp->dn_nlevels - 1, 0);
1185         for (j = 0; j < dnp->dn_nblkptr; j++) {
1186                 czb.zb_blkid = j;
1187                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1188                     &dnp->dn_blkptr[j], &czb);
1189         }
1190
1191         (void) printf("\n");
1192 }
1193
1194 /*ARGSUSED*/
1195 static void
1196 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1197 {
1198         dsl_dir_phys_t *dd = data;
1199         time_t crtime;
1200         char nice[32];
1201
1202         if (dd == NULL)
1203                 return;
1204
1205         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1206
1207         crtime = dd->dd_creation_time;
1208         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1209         (void) printf("\t\thead_dataset_obj = %llu\n",
1210             (u_longlong_t)dd->dd_head_dataset_obj);
1211         (void) printf("\t\tparent_dir_obj = %llu\n",
1212             (u_longlong_t)dd->dd_parent_obj);
1213         (void) printf("\t\torigin_obj = %llu\n",
1214             (u_longlong_t)dd->dd_origin_obj);
1215         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1216             (u_longlong_t)dd->dd_child_dir_zapobj);
1217         zdb_nicenum(dd->dd_used_bytes, nice);
1218         (void) printf("\t\tused_bytes = %s\n", nice);
1219         zdb_nicenum(dd->dd_compressed_bytes, nice);
1220         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1221         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1222         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1223         zdb_nicenum(dd->dd_quota, nice);
1224         (void) printf("\t\tquota = %s\n", nice);
1225         zdb_nicenum(dd->dd_reserved, nice);
1226         (void) printf("\t\treserved = %s\n", nice);
1227         (void) printf("\t\tprops_zapobj = %llu\n",
1228             (u_longlong_t)dd->dd_props_zapobj);
1229         (void) printf("\t\tdeleg_zapobj = %llu\n",
1230             (u_longlong_t)dd->dd_deleg_zapobj);
1231         (void) printf("\t\tflags = %llx\n",
1232             (u_longlong_t)dd->dd_flags);
1233
1234 #define DO(which) \
1235         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1236         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1237         DO(HEAD);
1238         DO(SNAP);
1239         DO(CHILD);
1240         DO(CHILD_RSRV);
1241         DO(REFRSRV);
1242 #undef DO
1243 }
1244
1245 /*ARGSUSED*/
1246 static void
1247 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1248 {
1249         dsl_dataset_phys_t *ds = data;
1250         time_t crtime;
1251         char used[32], compressed[32], uncompressed[32], unique[32];
1252         char blkbuf[BP_SPRINTF_LEN];
1253
1254         if (ds == NULL)
1255                 return;
1256
1257         ASSERT(size == sizeof (*ds));
1258         crtime = ds->ds_creation_time;
1259         zdb_nicenum(ds->ds_referenced_bytes, used);
1260         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1261         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1262         zdb_nicenum(ds->ds_unique_bytes, unique);
1263         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1264
1265         (void) printf("\t\tdir_obj = %llu\n",
1266             (u_longlong_t)ds->ds_dir_obj);
1267         (void) printf("\t\tprev_snap_obj = %llu\n",
1268             (u_longlong_t)ds->ds_prev_snap_obj);
1269         (void) printf("\t\tprev_snap_txg = %llu\n",
1270             (u_longlong_t)ds->ds_prev_snap_txg);
1271         (void) printf("\t\tnext_snap_obj = %llu\n",
1272             (u_longlong_t)ds->ds_next_snap_obj);
1273         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1274             (u_longlong_t)ds->ds_snapnames_zapobj);
1275         (void) printf("\t\tnum_children = %llu\n",
1276             (u_longlong_t)ds->ds_num_children);
1277         (void) printf("\t\tuserrefs_obj = %llu\n",
1278             (u_longlong_t)ds->ds_userrefs_obj);
1279         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1280         (void) printf("\t\tcreation_txg = %llu\n",
1281             (u_longlong_t)ds->ds_creation_txg);
1282         (void) printf("\t\tdeadlist_obj = %llu\n",
1283             (u_longlong_t)ds->ds_deadlist_obj);
1284         (void) printf("\t\tused_bytes = %s\n", used);
1285         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1286         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1287         (void) printf("\t\tunique = %s\n", unique);
1288         (void) printf("\t\tfsid_guid = %llu\n",
1289             (u_longlong_t)ds->ds_fsid_guid);
1290         (void) printf("\t\tguid = %llu\n",
1291             (u_longlong_t)ds->ds_guid);
1292         (void) printf("\t\tflags = %llx\n",
1293             (u_longlong_t)ds->ds_flags);
1294         (void) printf("\t\tnext_clones_obj = %llu\n",
1295             (u_longlong_t)ds->ds_next_clones_obj);
1296         (void) printf("\t\tprops_obj = %llu\n",
1297             (u_longlong_t)ds->ds_props_obj);
1298         (void) printf("\t\tbp = %s\n", blkbuf);
1299 }
1300
1301 /* ARGSUSED */
1302 static int
1303 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1304 {
1305         char blkbuf[BP_SPRINTF_LEN];
1306
1307         if (bp->blk_birth != 0) {
1308                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1309                 (void) printf("\t%s\n", blkbuf);
1310         }
1311         return (0);
1312 }
1313
1314 static void
1315 dump_bptree(objset_t *os, uint64_t obj, char *name)
1316 {
1317         char bytes[32];
1318         bptree_phys_t *bt;
1319         dmu_buf_t *db;
1320
1321         if (dump_opt['d'] < 3)
1322                 return;
1323
1324         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1325         bt = db->db_data;
1326         zdb_nicenum(bt->bt_bytes, bytes);
1327         (void) printf("\n    %s: %llu datasets, %s\n",
1328             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1329         dmu_buf_rele(db, FTAG);
1330
1331         if (dump_opt['d'] < 5)
1332                 return;
1333
1334         (void) printf("\n");
1335
1336         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1337 }
1338
1339 /* ARGSUSED */
1340 static int
1341 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1342 {
1343         char blkbuf[BP_SPRINTF_LEN];
1344
1345         ASSERT(bp->blk_birth != 0);
1346         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1347         (void) printf("\t%s\n", blkbuf);
1348         return (0);
1349 }
1350
1351 static void
1352 dump_bpobj(bpobj_t *bpo, char *name, int indent)
1353 {
1354         char bytes[32];
1355         char comp[32];
1356         char uncomp[32];
1357
1358         if (dump_opt['d'] < 3)
1359                 return;
1360
1361         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1362         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1363                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1364                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1365                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1366                     "%llu subobjs, %s (%s/%s comp)\n",
1367                     indent * 8, name,
1368                     (u_longlong_t)bpo->bpo_object,
1369                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1370                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1371                     bytes, comp, uncomp);
1372
1373                 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1374                         uint64_t subobj;
1375                         bpobj_t subbpo;
1376                         int error;
1377                         VERIFY0(dmu_read(bpo->bpo_os,
1378                             bpo->bpo_phys->bpo_subobjs,
1379                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1380                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1381                         if (error != 0) {
1382                                 (void) printf("ERROR %u while trying to open "
1383                                     "subobj id %llu\n",
1384                                     error, (u_longlong_t)subobj);
1385                                 continue;
1386                         }
1387                         dump_bpobj(&subbpo, "subobj", indent + 1);
1388                         bpobj_close(&subbpo);
1389                 }
1390         } else {
1391                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1392                     indent * 8, name,
1393                     (u_longlong_t)bpo->bpo_object,
1394                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1395                     bytes);
1396         }
1397
1398         if (dump_opt['d'] < 5)
1399                 return;
1400
1401
1402         if (indent == 0) {
1403                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1404                 (void) printf("\n");
1405         }
1406 }
1407
1408 static void
1409 dump_deadlist(dsl_deadlist_t *dl)
1410 {
1411         dsl_deadlist_entry_t *dle;
1412         uint64_t unused;
1413         char bytes[32];
1414         char comp[32];
1415         char uncomp[32];
1416
1417         if (dump_opt['d'] < 3)
1418                 return;
1419
1420         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1421         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1422         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1423         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1424             bytes, comp, uncomp);
1425
1426         if (dump_opt['d'] < 4)
1427                 return;
1428
1429         (void) printf("\n");
1430
1431         /* force the tree to be loaded */
1432         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1433
1434         for (dle = avl_first(&dl->dl_tree); dle;
1435             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1436                 if (dump_opt['d'] >= 5) {
1437                         char buf[128];
1438                         (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1439                             (longlong_t)dle->dle_mintxg,
1440                             (longlong_t)dle->dle_bpobj.bpo_object);
1441
1442                         dump_bpobj(&dle->dle_bpobj, buf, 0);
1443                 } else {
1444                         (void) printf("mintxg %llu -> obj %llu\n",
1445                             (longlong_t)dle->dle_mintxg,
1446                             (longlong_t)dle->dle_bpobj.bpo_object);
1447
1448                 }
1449         }
1450 }
1451
1452 static avl_tree_t idx_tree;
1453 static avl_tree_t domain_tree;
1454 static boolean_t fuid_table_loaded;
1455 static boolean_t sa_loaded;
1456 sa_attr_type_t *sa_attr_table;
1457
1458 static void
1459 fuid_table_destroy()
1460 {
1461         if (fuid_table_loaded) {
1462                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1463                 fuid_table_loaded = B_FALSE;
1464         }
1465 }
1466
1467 /*
1468  * print uid or gid information.
1469  * For normal POSIX id just the id is printed in decimal format.
1470  * For CIFS files with FUID the fuid is printed in hex followed by
1471  * the domain-rid string.
1472  */
1473 static void
1474 print_idstr(uint64_t id, const char *id_type)
1475 {
1476         if (FUID_INDEX(id)) {
1477                 char *domain;
1478
1479                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1480                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1481                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1482         } else {
1483                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1484         }
1485
1486 }
1487
1488 static void
1489 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1490 {
1491         uint32_t uid_idx, gid_idx;
1492
1493         uid_idx = FUID_INDEX(uid);
1494         gid_idx = FUID_INDEX(gid);
1495
1496         /* Load domain table, if not already loaded */
1497         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1498                 uint64_t fuid_obj;
1499
1500                 /* first find the fuid object.  It lives in the master node */
1501                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1502                     8, 1, &fuid_obj) == 0);
1503                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1504                 (void) zfs_fuid_table_load(os, fuid_obj,
1505                     &idx_tree, &domain_tree);
1506                 fuid_table_loaded = B_TRUE;
1507         }
1508
1509         print_idstr(uid, "uid");
1510         print_idstr(gid, "gid");
1511 }
1512
1513 /*ARGSUSED*/
1514 static void
1515 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1516 {
1517         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1518         sa_handle_t *hdl;
1519         uint64_t xattr, rdev, gen;
1520         uint64_t uid, gid, mode, fsize, parent, links;
1521         uint64_t pflags;
1522         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1523         time_t z_crtime, z_atime, z_mtime, z_ctime;
1524         sa_bulk_attr_t bulk[12];
1525         int idx = 0;
1526         int error;
1527
1528         if (!sa_loaded) {
1529                 uint64_t sa_attrs = 0;
1530                 uint64_t version;
1531
1532                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1533                     8, 1, &version) == 0);
1534                 if (version >= ZPL_VERSION_SA) {
1535                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1536                             8, 1, &sa_attrs) == 0);
1537                 }
1538                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1539                     ZPL_END, &sa_attr_table)) != 0) {
1540                         (void) printf("sa_setup failed errno %d, can't "
1541                             "display znode contents\n", error);
1542                         return;
1543                 }
1544                 sa_loaded = B_TRUE;
1545         }
1546
1547         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1548                 (void) printf("Failed to get handle for SA znode\n");
1549                 return;
1550         }
1551
1552         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1553         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1554         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1555             &links, 8);
1556         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1557         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1558             &mode, 8);
1559         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1560             NULL, &parent, 8);
1561         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1562             &fsize, 8);
1563         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1564             acctm, 16);
1565         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1566             modtm, 16);
1567         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1568             crtm, 16);
1569         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1570             chgtm, 16);
1571         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1572             &pflags, 8);
1573
1574         if (sa_bulk_lookup(hdl, bulk, idx)) {
1575                 (void) sa_handle_destroy(hdl);
1576                 return;
1577         }
1578
1579         error = zfs_obj_to_path(os, object, path, sizeof (path));
1580         if (error != 0) {
1581                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1582                     (u_longlong_t)object);
1583         }
1584         if (dump_opt['d'] < 3) {
1585                 (void) printf("\t%s\n", path);
1586                 (void) sa_handle_destroy(hdl);
1587                 return;
1588         }
1589
1590         z_crtime = (time_t)crtm[0];
1591         z_atime = (time_t)acctm[0];
1592         z_mtime = (time_t)modtm[0];
1593         z_ctime = (time_t)chgtm[0];
1594
1595         (void) printf("\tpath   %s\n", path);
1596         dump_uidgid(os, uid, gid);
1597         (void) printf("\tatime  %s", ctime(&z_atime));
1598         (void) printf("\tmtime  %s", ctime(&z_mtime));
1599         (void) printf("\tctime  %s", ctime(&z_ctime));
1600         (void) printf("\tcrtime %s", ctime(&z_crtime));
1601         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1602         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1603         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1604         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1605         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1606         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1607         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1608             sizeof (uint64_t)) == 0)
1609                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1610         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1611             sizeof (uint64_t)) == 0)
1612                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1613         sa_handle_destroy(hdl);
1614 }
1615
1616 /*ARGSUSED*/
1617 static void
1618 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1619 {
1620 }
1621
1622 /*ARGSUSED*/
1623 static void
1624 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1625 {
1626 }
1627
1628 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1629         dump_none,              /* unallocated                  */
1630         dump_zap,               /* object directory             */
1631         dump_uint64,            /* object array                 */
1632         dump_none,              /* packed nvlist                */
1633         dump_packed_nvlist,     /* packed nvlist size           */
1634         dump_none,              /* bplist                       */
1635         dump_none,              /* bplist header                */
1636         dump_none,              /* SPA space map header         */
1637         dump_none,              /* SPA space map                */
1638         dump_none,              /* ZIL intent log               */
1639         dump_dnode,             /* DMU dnode                    */
1640         dump_dmu_objset,        /* DMU objset                   */
1641         dump_dsl_dir,           /* DSL directory                */
1642         dump_zap,               /* DSL directory child map      */
1643         dump_zap,               /* DSL dataset snap map         */
1644         dump_zap,               /* DSL props                    */
1645         dump_dsl_dataset,       /* DSL dataset                  */
1646         dump_znode,             /* ZFS znode                    */
1647         dump_acl,               /* ZFS V0 ACL                   */
1648         dump_uint8,             /* ZFS plain file               */
1649         dump_zpldir,            /* ZFS directory                */
1650         dump_zap,               /* ZFS master node              */
1651         dump_zap,               /* ZFS delete queue             */
1652         dump_uint8,             /* zvol object                  */
1653         dump_zap,               /* zvol prop                    */
1654         dump_uint8,             /* other uint8[]                */
1655         dump_uint64,            /* other uint64[]               */
1656         dump_zap,               /* other ZAP                    */
1657         dump_zap,               /* persistent error log         */
1658         dump_uint8,             /* SPA history                  */
1659         dump_history_offsets,   /* SPA history offsets          */
1660         dump_zap,               /* Pool properties              */
1661         dump_zap,               /* DSL permissions              */
1662         dump_acl,               /* ZFS ACL                      */
1663         dump_uint8,             /* ZFS SYSACL                   */
1664         dump_none,              /* FUID nvlist                  */
1665         dump_packed_nvlist,     /* FUID nvlist size             */
1666         dump_zap,               /* DSL dataset next clones      */
1667         dump_zap,               /* DSL scrub queue              */
1668         dump_zap,               /* ZFS user/group used          */
1669         dump_zap,               /* ZFS user/group quota         */
1670         dump_zap,               /* snapshot refcount tags       */
1671         dump_ddt_zap,           /* DDT ZAP object               */
1672         dump_zap,               /* DDT statistics               */
1673         dump_znode,             /* SA object                    */
1674         dump_zap,               /* SA Master Node               */
1675         dump_sa_attrs,          /* SA attribute registration    */
1676         dump_sa_layouts,        /* SA attribute layouts         */
1677         dump_zap,               /* DSL scrub translations       */
1678         dump_none,              /* fake dedup BP                */
1679         dump_zap,               /* deadlist                     */
1680         dump_none,              /* deadlist hdr                 */
1681         dump_zap,               /* dsl clones                   */
1682         dump_none,              /* bpobj subobjs                */
1683         dump_unknown,           /* Unknown type, must be last   */
1684 };
1685
1686 static void
1687 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1688 {
1689         dmu_buf_t *db = NULL;
1690         dmu_object_info_t doi;
1691         dnode_t *dn;
1692         void *bonus = NULL;
1693         size_t bsize = 0;
1694         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1695         char bonus_size[32];
1696         char aux[50];
1697         int error;
1698
1699         if (*print_header) {
1700                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1701                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1702                     "%full", "type");
1703                 *print_header = 0;
1704         }
1705
1706         if (object == 0) {
1707                 dn = DMU_META_DNODE(os);
1708         } else {
1709                 error = dmu_bonus_hold(os, object, FTAG, &db);
1710                 if (error)
1711                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1712                             object, error);
1713                 bonus = db->db_data;
1714                 bsize = db->db_size;
1715                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1716         }
1717         dmu_object_info_from_dnode(dn, &doi);
1718
1719         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1720         zdb_nicenum(doi.doi_data_block_size, dblk);
1721         zdb_nicenum(doi.doi_max_offset, lsize);
1722         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1723         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1724         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1725             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1726             doi.doi_max_offset);
1727
1728         aux[0] = '\0';
1729
1730         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1731                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1732                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1733         }
1734
1735         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1736                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1737                     ZDB_COMPRESS_NAME(doi.doi_compress));
1738         }
1739
1740         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1741             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1742             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1743
1744         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1745                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1746                     "", "", "", "", "", bonus_size, "bonus",
1747                     ZDB_OT_NAME(doi.doi_bonus_type));
1748         }
1749
1750         if (verbosity >= 4) {
1751                 (void) printf("\tdnode flags: %s%s%s\n",
1752                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1753                     "USED_BYTES " : "",
1754                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1755                     "USERUSED_ACCOUNTED " : "",
1756                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1757                     "SPILL_BLKPTR" : "");
1758                 (void) printf("\tdnode maxblkid: %llu\n",
1759                     (longlong_t)dn->dn_phys->dn_maxblkid);
1760
1761                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1762                     bonus, bsize);
1763                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1764                 *print_header = 1;
1765         }
1766
1767         if (verbosity >= 5)
1768                 dump_indirect(dn);
1769
1770         if (verbosity >= 5) {
1771                 /*
1772                  * Report the list of segments that comprise the object.
1773                  */
1774                 uint64_t start = 0;
1775                 uint64_t end;
1776                 uint64_t blkfill = 1;
1777                 int minlvl = 1;
1778
1779                 if (dn->dn_type == DMU_OT_DNODE) {
1780                         minlvl = 0;
1781                         blkfill = DNODES_PER_BLOCK;
1782                 }
1783
1784                 for (;;) {
1785                         char segsize[32];
1786                         error = dnode_next_offset(dn,
1787                             0, &start, minlvl, blkfill, 0);
1788                         if (error)
1789                                 break;
1790                         end = start;
1791                         error = dnode_next_offset(dn,
1792                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1793                         zdb_nicenum(end - start, segsize);
1794                         (void) printf("\t\tsegment [%016llx, %016llx)"
1795                             " size %5s\n", (u_longlong_t)start,
1796                             (u_longlong_t)end, segsize);
1797                         if (error)
1798                                 break;
1799                         start = end;
1800                 }
1801         }
1802
1803         if (db != NULL)
1804                 dmu_buf_rele(db, FTAG);
1805 }
1806
1807 static char *objset_types[DMU_OST_NUMTYPES] = {
1808         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1809
1810 static void
1811 dump_dir(objset_t *os)
1812 {
1813         dmu_objset_stats_t dds;
1814         uint64_t object, object_count;
1815         uint64_t refdbytes, usedobjs, scratch;
1816         char numbuf[32];
1817         char blkbuf[BP_SPRINTF_LEN + 20];
1818         char osname[MAXNAMELEN];
1819         char *type = "UNKNOWN";
1820         int verbosity = dump_opt['d'];
1821         int print_header = 1;
1822         int i, error;
1823
1824         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1825         dmu_objset_fast_stat(os, &dds);
1826         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1827
1828         if (dds.dds_type < DMU_OST_NUMTYPES)
1829                 type = objset_types[dds.dds_type];
1830
1831         if (dds.dds_type == DMU_OST_META) {
1832                 dds.dds_creation_txg = TXG_INITIAL;
1833                 usedobjs = BP_GET_FILL(os->os_rootbp);
1834                 refdbytes = os->os_spa->spa_dsl_pool->
1835                     dp_mos_dir->dd_phys->dd_used_bytes;
1836         } else {
1837                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1838         }
1839
1840         ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
1841
1842         zdb_nicenum(refdbytes, numbuf);
1843
1844         if (verbosity >= 4) {
1845                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1846                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1847                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1848         } else {
1849                 blkbuf[0] = '\0';
1850         }
1851
1852         dmu_objset_name(os, osname);
1853
1854         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1855             "%s, %llu objects%s\n",
1856             osname, type, (u_longlong_t)dmu_objset_id(os),
1857             (u_longlong_t)dds.dds_creation_txg,
1858             numbuf, (u_longlong_t)usedobjs, blkbuf);
1859
1860         if (zopt_objects != 0) {
1861                 for (i = 0; i < zopt_objects; i++)
1862                         dump_object(os, zopt_object[i], verbosity,
1863                             &print_header);
1864                 (void) printf("\n");
1865                 return;
1866         }
1867
1868         if (dump_opt['i'] != 0 || verbosity >= 2)
1869                 dump_intent_log(dmu_objset_zil(os));
1870
1871         if (dmu_objset_ds(os) != NULL)
1872                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1873
1874         if (verbosity < 2)
1875                 return;
1876
1877         if (BP_IS_HOLE(os->os_rootbp))
1878                 return;
1879
1880         dump_object(os, 0, verbosity, &print_header);
1881         object_count = 0;
1882         if (DMU_USERUSED_DNODE(os) != NULL &&
1883             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1884                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1885                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1886         }
1887
1888         object = 0;
1889         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1890                 dump_object(os, object, verbosity, &print_header);
1891                 object_count++;
1892         }
1893
1894         ASSERT3U(object_count, ==, usedobjs);
1895
1896         (void) printf("\n");
1897
1898         if (error != ESRCH) {
1899                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1900                 abort();
1901         }
1902 }
1903
1904 static void
1905 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1906 {
1907         time_t timestamp = ub->ub_timestamp;
1908
1909         (void) printf(header ? header : "");
1910         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1911         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1912         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1913         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1914         (void) printf("\ttimestamp = %llu UTC = %s",
1915             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1916         if (dump_opt['u'] >= 3) {
1917                 char blkbuf[BP_SPRINTF_LEN];
1918                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
1919                 (void) printf("\trootbp = %s\n", blkbuf);
1920         }
1921         (void) printf(footer ? footer : "");
1922 }
1923
1924 static void
1925 dump_config(spa_t *spa)
1926 {
1927         dmu_buf_t *db;
1928         size_t nvsize = 0;
1929         int error = 0;
1930
1931
1932         error = dmu_bonus_hold(spa->spa_meta_objset,
1933             spa->spa_config_object, FTAG, &db);
1934
1935         if (error == 0) {
1936                 nvsize = *(uint64_t *)db->db_data;
1937                 dmu_buf_rele(db, FTAG);
1938
1939                 (void) printf("\nMOS Configuration:\n");
1940                 dump_packed_nvlist(spa->spa_meta_objset,
1941                     spa->spa_config_object, (void *)&nvsize, 1);
1942         } else {
1943                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1944                     (u_longlong_t)spa->spa_config_object, error);
1945         }
1946 }
1947
1948 static void
1949 dump_cachefile(const char *cachefile)
1950 {
1951         int fd;
1952         struct stat64 statbuf;
1953         char *buf;
1954         nvlist_t *config;
1955
1956         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1957                 (void) printf("cannot open '%s': %s\n", cachefile,
1958                     strerror(errno));
1959                 exit(1);
1960         }
1961
1962         if (fstat64(fd, &statbuf) != 0) {
1963                 (void) printf("failed to stat '%s': %s\n", cachefile,
1964                     strerror(errno));
1965                 exit(1);
1966         }
1967
1968         if ((buf = malloc(statbuf.st_size)) == NULL) {
1969                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1970                     (u_longlong_t)statbuf.st_size);
1971                 exit(1);
1972         }
1973
1974         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1975                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1976                     (u_longlong_t)statbuf.st_size);
1977                 exit(1);
1978         }
1979
1980         (void) close(fd);
1981
1982         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1983                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1984                 exit(1);
1985         }
1986
1987         free(buf);
1988
1989         dump_nvlist(config, 0);
1990
1991         nvlist_free(config);
1992 }
1993
1994 #define ZDB_MAX_UB_HEADER_SIZE 32
1995
1996 static void
1997 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1998 {
1999         vdev_t vd;
2000         vdev_t *vdp = &vd;
2001         char header[ZDB_MAX_UB_HEADER_SIZE];
2002
2003         vd.vdev_ashift = ashift;
2004         vdp->vdev_top = vdp;
2005
2006         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2007                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2008                 uberblock_t *ub = (void *)((char *)lbl + uoff);
2009
2010                 if (uberblock_verify(ub))
2011                         continue;
2012                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2013                     "Uberblock[%d]\n", i);
2014                 dump_uberblock(ub, header, "");
2015         }
2016 }
2017
2018 static void
2019 dump_label(const char *dev)
2020 {
2021         int fd;
2022         vdev_label_t label;
2023         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
2024         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2025         struct stat64 statbuf;
2026         uint64_t psize, ashift;
2027         int len = strlen(dev) + 1;
2028
2029         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
2030                 len++;
2031                 path = malloc(len);
2032                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
2033         } else {
2034                 path = strdup(dev);
2035         }
2036
2037         if ((fd = open64(path, O_RDONLY)) < 0) {
2038                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2039                 free(path);
2040                 exit(1);
2041         }
2042
2043         if (fstat64(fd, &statbuf) != 0) {
2044                 (void) printf("failed to stat '%s': %s\n", path,
2045                     strerror(errno));
2046                 free(path);
2047                 (void) close(fd);
2048                 exit(1);
2049         }
2050
2051         if (S_ISBLK(statbuf.st_mode)) {
2052                 (void) printf("cannot use '%s': character device required\n",
2053                     path);
2054                 free(path);
2055                 (void) close(fd);
2056                 exit(1);
2057         }
2058
2059         psize = statbuf.st_size;
2060         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2061
2062         for (int l = 0; l < VDEV_LABELS; l++) {
2063                 nvlist_t *config = NULL;
2064
2065                 (void) printf("--------------------------------------------\n");
2066                 (void) printf("LABEL %d\n", l);
2067                 (void) printf("--------------------------------------------\n");
2068
2069                 if (pread64(fd, &label, sizeof (label),
2070                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2071                         (void) printf("failed to read label %d\n", l);
2072                         continue;
2073                 }
2074
2075                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2076                         (void) printf("failed to unpack label %d\n", l);
2077                         ashift = SPA_MINBLOCKSHIFT;
2078                 } else {
2079                         nvlist_t *vdev_tree = NULL;
2080
2081                         dump_nvlist(config, 4);
2082                         if ((nvlist_lookup_nvlist(config,
2083                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2084                             (nvlist_lookup_uint64(vdev_tree,
2085                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2086                                 ashift = SPA_MINBLOCKSHIFT;
2087                         nvlist_free(config);
2088                 }
2089                 if (dump_opt['u'])
2090                         dump_label_uberblocks(&label, ashift);
2091         }
2092
2093         free(path);
2094         (void) close(fd);
2095 }
2096
2097 /*ARGSUSED*/
2098 static int
2099 dump_one_dir(const char *dsname, void *arg)
2100 {
2101         int error;
2102         objset_t *os;
2103
2104         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2105         if (error) {
2106                 (void) printf("Could not open %s, error %d\n", dsname, error);
2107                 return (0);
2108         }
2109         dump_dir(os);
2110         dmu_objset_disown(os, FTAG);
2111         fuid_table_destroy();
2112         sa_loaded = B_FALSE;
2113         return (0);
2114 }
2115
2116 /*
2117  * Block statistics.
2118  */
2119 #define PSIZE_HISTO_SIZE (SPA_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1)
2120 typedef struct zdb_blkstats {
2121         uint64_t zb_asize;
2122         uint64_t zb_lsize;
2123         uint64_t zb_psize;
2124         uint64_t zb_count;
2125         uint64_t zb_gangs;
2126         uint64_t zb_ditto_samevdev;
2127         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2128 } zdb_blkstats_t;
2129
2130 /*
2131  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2132  */
2133 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2134 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2135 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2136 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2137
2138 static char *zdb_ot_extname[] = {
2139         "deferred free",
2140         "dedup ditto",
2141         "other",
2142         "Total",
2143 };
2144
2145 #define ZB_TOTAL        DN_MAX_LEVELS
2146
2147 typedef struct zdb_cb {
2148         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2149         uint64_t        zcb_dedup_asize;
2150         uint64_t        zcb_dedup_blocks;
2151         uint64_t        zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2152         uint64_t        zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2153             [BPE_PAYLOAD_SIZE];
2154         uint64_t        zcb_start;
2155         uint64_t        zcb_lastprint;
2156         uint64_t        zcb_totalasize;
2157         uint64_t        zcb_errors[256];
2158         int             zcb_readfails;
2159         int             zcb_haderrors;
2160         spa_t           *zcb_spa;
2161 } zdb_cb_t;
2162
2163 static void
2164 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2165     dmu_object_type_t type)
2166 {
2167         uint64_t refcnt = 0;
2168
2169         ASSERT(type < ZDB_OT_TOTAL);
2170
2171         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2172                 return;
2173
2174         for (int i = 0; i < 4; i++) {
2175                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2176                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2177                 int equal;
2178                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2179
2180                 zb->zb_asize += BP_GET_ASIZE(bp);
2181                 zb->zb_lsize += BP_GET_LSIZE(bp);
2182                 zb->zb_psize += BP_GET_PSIZE(bp);
2183                 zb->zb_count++;
2184                 zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++;
2185
2186                 zb->zb_gangs += BP_COUNT_GANG(bp);
2187
2188                 switch (BP_GET_NDVAS(bp)) {
2189                 case 2:
2190                         if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2191                             DVA_GET_VDEV(&bp->blk_dva[1]))
2192                                 zb->zb_ditto_samevdev++;
2193                         break;
2194                 case 3:
2195                         equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2196                             DVA_GET_VDEV(&bp->blk_dva[1])) +
2197                             (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2198                             DVA_GET_VDEV(&bp->blk_dva[2])) +
2199                             (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2200                             DVA_GET_VDEV(&bp->blk_dva[2]));
2201                         if (equal != 0)
2202                                 zb->zb_ditto_samevdev++;
2203                         break;
2204                 }
2205
2206         }
2207
2208         if (BP_IS_EMBEDDED(bp)) {
2209                 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2210                 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2211                     [BPE_GET_PSIZE(bp)]++;
2212                 return;
2213         }
2214
2215         if (dump_opt['L'])
2216                 return;
2217
2218         if (BP_GET_DEDUP(bp)) {
2219                 ddt_t *ddt;
2220                 ddt_entry_t *dde;
2221
2222                 ddt = ddt_select(zcb->zcb_spa, bp);
2223                 ddt_enter(ddt);
2224                 dde = ddt_lookup(ddt, bp, B_FALSE);
2225
2226                 if (dde == NULL) {
2227                         refcnt = 0;
2228                 } else {
2229                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2230                         ddt_phys_decref(ddp);
2231                         refcnt = ddp->ddp_refcnt;
2232                         if (ddt_phys_total_refcnt(dde) == 0)
2233                                 ddt_remove(ddt, dde);
2234                 }
2235                 ddt_exit(ddt);
2236         }
2237
2238         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2239             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2240             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2241 }
2242
2243 /* ARGSUSED */
2244 static void
2245 zdb_blkptr_done(zio_t *zio)
2246 {
2247         spa_t *spa = zio->io_spa;
2248         blkptr_t *bp = zio->io_bp;
2249         int ioerr = zio->io_error;
2250         zdb_cb_t *zcb = zio->io_private;
2251         zbookmark_t *zb = &zio->io_bookmark;
2252
2253         zio_data_buf_free(zio->io_data, zio->io_size);
2254
2255         mutex_enter(&spa->spa_scrub_lock);
2256         spa->spa_scrub_inflight--;
2257         cv_broadcast(&spa->spa_scrub_io_cv);
2258
2259         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2260                 char blkbuf[BP_SPRINTF_LEN];
2261
2262                 zcb->zcb_haderrors = 1;
2263                 zcb->zcb_errors[ioerr]++;
2264
2265                 if (dump_opt['b'] >= 2)
2266                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2267                 else
2268                         blkbuf[0] = '\0';
2269
2270                 (void) printf("zdb_blkptr_cb: "
2271                     "Got error %d reading "
2272                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2273                     ioerr,
2274                     (u_longlong_t)zb->zb_objset,
2275                     (u_longlong_t)zb->zb_object,
2276                     (u_longlong_t)zb->zb_level,
2277                     (u_longlong_t)zb->zb_blkid,
2278                     blkbuf);
2279         }
2280         mutex_exit(&spa->spa_scrub_lock);
2281 }
2282
2283 /* ARGSUSED */
2284 static int
2285 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2286     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2287 {
2288         zdb_cb_t *zcb = arg;
2289         dmu_object_type_t type;
2290         boolean_t is_metadata;
2291
2292         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2293                 char blkbuf[BP_SPRINTF_LEN];
2294                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2295                 (void) printf("objset %llu object %llu "
2296                     "level %lld offset 0x%llx %s\n",
2297                     (u_longlong_t)zb->zb_objset,
2298                     (u_longlong_t)zb->zb_object,
2299                     (longlong_t)zb->zb_level,
2300                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2301                     blkbuf);
2302         }
2303
2304         if (BP_IS_HOLE(bp))
2305                 return (0);
2306
2307         type = BP_GET_TYPE(bp);
2308
2309         zdb_count_block(zcb, zilog, bp,
2310             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2311
2312         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2313
2314         if (!BP_IS_EMBEDDED(bp) &&
2315             (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2316                 size_t size = BP_GET_PSIZE(bp);
2317                 void *data = zio_data_buf_alloc(size);
2318                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2319
2320                 /* If it's an intent log block, failure is expected. */
2321                 if (zb->zb_level == ZB_ZIL_LEVEL)
2322                         flags |= ZIO_FLAG_SPECULATIVE;
2323
2324                 mutex_enter(&spa->spa_scrub_lock);
2325                 while (spa->spa_scrub_inflight > max_inflight)
2326                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2327                 spa->spa_scrub_inflight++;
2328                 mutex_exit(&spa->spa_scrub_lock);
2329
2330                 zio_nowait(zio_read(NULL, spa, bp, data, size,
2331                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2332         }
2333
2334         zcb->zcb_readfails = 0;
2335
2336         if (dump_opt['b'] < 5 && isatty(STDERR_FILENO) &&
2337             gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2338                 uint64_t now = gethrtime();
2339                 char buf[10];
2340                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2341                 int kb_per_sec =
2342                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2343                 int sec_remaining =
2344                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2345
2346                 zfs_nicenum(bytes, buf, sizeof (buf));
2347                 (void) fprintf(stderr,
2348                     "\r%5s completed (%4dMB/s) "
2349                     "estimated time remaining: %uhr %02umin %02usec        ",
2350                     buf, kb_per_sec / 1024,
2351                     sec_remaining / 60 / 60,
2352                     sec_remaining / 60 % 60,
2353                     sec_remaining % 60);
2354
2355                 zcb->zcb_lastprint = now;
2356         }
2357
2358         return (0);
2359 }
2360
2361 static void
2362 zdb_leak(void *arg, uint64_t start, uint64_t size)
2363 {
2364         vdev_t *vd = arg;
2365
2366         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2367             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2368 }
2369
2370 static metaslab_ops_t zdb_metaslab_ops = {
2371         NULL,   /* alloc */
2372         NULL    /* fragmented */
2373 };
2374
2375 static void
2376 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2377 {
2378         ddt_bookmark_t ddb = { 0 };
2379         ddt_entry_t dde;
2380         int error;
2381
2382         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2383                 blkptr_t blk;
2384                 ddt_phys_t *ddp = dde.dde_phys;
2385
2386                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2387                         return;
2388
2389                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2390
2391                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2392                         if (ddp->ddp_phys_birth == 0)
2393                                 continue;
2394                         ddt_bp_create(ddb.ddb_checksum,
2395                             &dde.dde_key, ddp, &blk);
2396                         if (p == DDT_PHYS_DITTO) {
2397                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2398                         } else {
2399                                 zcb->zcb_dedup_asize +=
2400                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2401                                 zcb->zcb_dedup_blocks++;
2402                         }
2403                 }
2404                 if (!dump_opt['L']) {
2405                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2406                         ddt_enter(ddt);
2407                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2408                         ddt_exit(ddt);
2409                 }
2410         }
2411
2412         ASSERT(error == ENOENT);
2413 }
2414
2415 static void
2416 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2417 {
2418         zcb->zcb_spa = spa;
2419
2420         if (!dump_opt['L']) {
2421                 vdev_t *rvd = spa->spa_root_vdev;
2422                 for (int c = 0; c < rvd->vdev_children; c++) {
2423                         vdev_t *vd = rvd->vdev_child[c];
2424                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2425                                 metaslab_t *msp = vd->vdev_ms[m];
2426                                 mutex_enter(&msp->ms_lock);
2427                                 metaslab_unload(msp);
2428
2429                                 /*
2430                                  * For leak detection, we overload the metaslab
2431                                  * ms_tree to contain allocated segments
2432                                  * instead of free segments. As a result,
2433                                  * we can't use the normal metaslab_load/unload
2434                                  * interfaces.
2435                                  */
2436                                 if (msp->ms_sm != NULL) {
2437                                         msp->ms_ops = &zdb_metaslab_ops;
2438                                         VERIFY0(space_map_load(msp->ms_sm,
2439                                             msp->ms_tree, SM_ALLOC));
2440                                         msp->ms_loaded = B_TRUE;
2441                                 }
2442                                 mutex_exit(&msp->ms_lock);
2443                         }
2444                 }
2445         }
2446
2447         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2448
2449         zdb_ddt_leak_init(spa, zcb);
2450
2451         spa_config_exit(spa, SCL_CONFIG, FTAG);
2452 }
2453
2454 static void
2455 zdb_leak_fini(spa_t *spa)
2456 {
2457         if (!dump_opt['L']) {
2458                 vdev_t *rvd = spa->spa_root_vdev;
2459                 for (int c = 0; c < rvd->vdev_children; c++) {
2460                         vdev_t *vd = rvd->vdev_child[c];
2461                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2462                                 metaslab_t *msp = vd->vdev_ms[m];
2463                                 mutex_enter(&msp->ms_lock);
2464
2465                                 /*
2466                                  * The ms_tree has been overloaded to
2467                                  * contain allocated segments. Now that we
2468                                  * finished traversing all blocks, any
2469                                  * block that remains in the ms_tree
2470                                  * represents an allocated block that we
2471                                  * did not claim during the traversal.
2472                                  * Claimed blocks would have been removed
2473                                  * from the ms_tree.
2474                                  */
2475                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2476                                 msp->ms_loaded = B_FALSE;
2477
2478                                 mutex_exit(&msp->ms_lock);
2479                         }
2480                 }
2481         }
2482 }
2483
2484 /* ARGSUSED */
2485 static int
2486 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2487 {
2488         zdb_cb_t *zcb = arg;
2489
2490         if (dump_opt['b'] >= 5) {
2491                 char blkbuf[BP_SPRINTF_LEN];
2492                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2493                 (void) printf("[%s] %s\n",
2494                     "deferred free", blkbuf);
2495         }
2496         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2497         return (0);
2498 }
2499
2500 static int
2501 dump_block_stats(spa_t *spa)
2502 {
2503         zdb_cb_t zcb = { 0 };
2504         zdb_blkstats_t *zb, *tzb;
2505         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2506         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2507         boolean_t leaks = B_FALSE;
2508
2509         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2510             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2511             (dump_opt['c'] == 1) ? "metadata " : "",
2512             dump_opt['c'] ? "checksums " : "",
2513             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2514             !dump_opt['L'] ? "nothing leaked " : "");
2515
2516         /*
2517          * Load all space maps as SM_ALLOC maps, then traverse the pool
2518          * claiming each block we discover.  If the pool is perfectly
2519          * consistent, the space maps will be empty when we're done.
2520          * Anything left over is a leak; any block we can't claim (because
2521          * it's not part of any space map) is a double allocation,
2522          * reference to a freed block, or an unclaimed log block.
2523          */
2524         zdb_leak_init(spa, &zcb);
2525
2526         /*
2527          * If there's a deferred-free bplist, process that first.
2528          */
2529         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2530             count_block_cb, &zcb, NULL);
2531         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2532                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2533                     count_block_cb, &zcb, NULL);
2534         }
2535         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2536                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2537                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2538                     &zcb, NULL));
2539         }
2540
2541         if (dump_opt['c'] > 1)
2542                 flags |= TRAVERSE_PREFETCH_DATA;
2543
2544         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2545         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2546         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2547
2548         /*
2549          * If we've traversed the data blocks then we need to wait for those
2550          * I/Os to complete. We leverage "The Godfather" zio to wait on
2551          * all async I/Os to complete.
2552          */
2553         if (dump_opt['c']) {
2554                 (void) zio_wait(spa->spa_async_zio_root);
2555                 spa->spa_async_zio_root = zio_root(spa, NULL, NULL,
2556                     ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2557                     ZIO_FLAG_GODFATHER);
2558         }
2559
2560         if (zcb.zcb_haderrors) {
2561                 (void) printf("\nError counts:\n\n");
2562                 (void) printf("\t%5s  %s\n", "errno", "count");
2563                 for (int e = 0; e < 256; e++) {
2564                         if (zcb.zcb_errors[e] != 0) {
2565                                 (void) printf("\t%5d  %llu\n",
2566                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2567                         }
2568                 }
2569         }
2570
2571         /*
2572          * Report any leaked segments.
2573          */
2574         zdb_leak_fini(spa);
2575
2576         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2577
2578         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2579         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2580
2581         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2582         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2583
2584         if (total_found == total_alloc) {
2585                 if (!dump_opt['L'])
2586                         (void) printf("\n\tNo leaks (block sum matches space"
2587                             " maps exactly)\n");
2588         } else {
2589                 (void) printf("block traversal size %llu != alloc %llu "
2590                     "(%s %lld)\n",
2591                     (u_longlong_t)total_found,
2592                     (u_longlong_t)total_alloc,
2593                     (dump_opt['L']) ? "unreachable" : "leaked",
2594                     (longlong_t)(total_alloc - total_found));
2595                 leaks = B_TRUE;
2596         }
2597
2598         if (tzb->zb_count == 0)
2599                 return (2);
2600
2601         (void) printf("\n");
2602         (void) printf("\tbp count:      %10llu\n",
2603             (u_longlong_t)tzb->zb_count);
2604         (void) printf("\tganged count:  %10llu\n",
2605             (longlong_t)tzb->zb_gangs);
2606         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2607             (u_longlong_t)tzb->zb_lsize,
2608             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2609         (void) printf("\tbp physical:   %10llu      avg:"
2610             " %6llu     compression: %6.2f\n",
2611             (u_longlong_t)tzb->zb_psize,
2612             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2613             (double)tzb->zb_lsize / tzb->zb_psize);
2614         (void) printf("\tbp allocated:  %10llu      avg:"
2615             " %6llu     compression: %6.2f\n",
2616             (u_longlong_t)tzb->zb_asize,
2617             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2618             (double)tzb->zb_lsize / tzb->zb_asize);
2619         (void) printf("\tbp deduped:    %10llu    ref>1:"
2620             " %6llu   deduplication: %6.2f\n",
2621             (u_longlong_t)zcb.zcb_dedup_asize,
2622             (u_longlong_t)zcb.zcb_dedup_blocks,
2623             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2624         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2625             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2626
2627         for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2628                 if (zcb.zcb_embedded_blocks[i] == 0)
2629                         continue;
2630                 (void) printf("\n");
2631                 (void) printf("\tadditional, non-pointer bps of type %u: "
2632                     "%10llu\n",
2633                     i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2634
2635                 if (dump_opt['b'] >= 3) {
2636                         (void) printf("\t number of (compressed) bytes:  "
2637                             "number of bps\n");
2638                         dump_histogram(zcb.zcb_embedded_histogram[i],
2639                             sizeof (zcb.zcb_embedded_histogram[i]) /
2640                             sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
2641                 }
2642         }
2643
2644         if (tzb->zb_ditto_samevdev != 0) {
2645                 (void) printf("\tDittoed blocks on same vdev: %llu\n",
2646                     (longlong_t)tzb->zb_ditto_samevdev);
2647         }
2648
2649         if (dump_opt['b'] >= 2) {
2650                 int l, t, level;
2651                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2652                     "\t  avg\t comp\t%%Total\tType\n");
2653
2654                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2655                         char csize[32], lsize[32], psize[32], asize[32];
2656                         char avg[32], gang[32];
2657                         char *typename;
2658
2659                         if (t < DMU_OT_NUMTYPES)
2660                                 typename = dmu_ot[t].ot_name;
2661                         else
2662                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2663
2664                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2665                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2666                                     "\t%5s\t%5s\t%6s\t%s\n",
2667                                     "-",
2668                                     "-",
2669                                     "-",
2670                                     "-",
2671                                     "-",
2672                                     "-",
2673                                     "-",
2674                                     typename);
2675                                 continue;
2676                         }
2677
2678                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2679                                 level = (l == -1 ? ZB_TOTAL : l);
2680                                 zb = &zcb.zcb_type[level][t];
2681
2682                                 if (zb->zb_asize == 0)
2683                                         continue;
2684
2685                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2686                                         continue;
2687
2688                                 if (level == 0 && zb->zb_asize ==
2689                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2690                                         continue;
2691
2692                                 zdb_nicenum(zb->zb_count, csize);
2693                                 zdb_nicenum(zb->zb_lsize, lsize);
2694                                 zdb_nicenum(zb->zb_psize, psize);
2695                                 zdb_nicenum(zb->zb_asize, asize);
2696                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2697                                 zdb_nicenum(zb->zb_gangs, gang);
2698
2699                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2700                                     "\t%5.2f\t%6.2f\t",
2701                                     csize, lsize, psize, asize, avg,
2702                                     (double)zb->zb_lsize / zb->zb_psize,
2703                                     100.0 * zb->zb_asize / tzb->zb_asize);
2704
2705                                 if (level == ZB_TOTAL)
2706                                         (void) printf("%s\n", typename);
2707                                 else
2708                                         (void) printf("    L%d %s\n",
2709                                             level, typename);
2710
2711                                 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2712                                         (void) printf("\t number of ganged "
2713                                             "blocks: %s\n", gang);
2714                                 }
2715
2716                                 if (dump_opt['b'] >= 4) {
2717                                         (void) printf("psize "
2718                                             "(in 512-byte sectors): "
2719                                             "number of blocks\n");
2720                                         dump_histogram(zb->zb_psize_histogram,
2721                                             PSIZE_HISTO_SIZE, 0);
2722                                 }
2723                         }
2724                 }
2725         }
2726
2727         (void) printf("\n");
2728
2729         if (leaks)
2730                 return (2);
2731
2732         if (zcb.zcb_haderrors)
2733                 return (3);
2734
2735         return (0);
2736 }
2737
2738 typedef struct zdb_ddt_entry {
2739         ddt_key_t       zdde_key;
2740         uint64_t        zdde_ref_blocks;
2741         uint64_t        zdde_ref_lsize;
2742         uint64_t        zdde_ref_psize;
2743         uint64_t        zdde_ref_dsize;
2744         avl_node_t      zdde_node;
2745 } zdb_ddt_entry_t;
2746
2747 /* ARGSUSED */
2748 static int
2749 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2750     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2751 {
2752         avl_tree_t *t = arg;
2753         avl_index_t where;
2754         zdb_ddt_entry_t *zdde, zdde_search;
2755
2756         if (BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
2757                 return (0);
2758
2759         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2760                 (void) printf("traversing objset %llu, %llu objects, "
2761                     "%lu blocks so far\n",
2762                     (u_longlong_t)zb->zb_objset,
2763                     (u_longlong_t)BP_GET_FILL(bp),
2764                     avl_numnodes(t));
2765         }
2766
2767         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2768             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2769                 return (0);
2770
2771         ddt_key_fill(&zdde_search.zdde_key, bp);
2772
2773         zdde = avl_find(t, &zdde_search, &where);
2774
2775         if (zdde == NULL) {
2776                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2777                 zdde->zdde_key = zdde_search.zdde_key;
2778                 avl_insert(t, zdde, where);
2779         }
2780
2781         zdde->zdde_ref_blocks += 1;
2782         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2783         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2784         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2785
2786         return (0);
2787 }
2788
2789 static void
2790 dump_simulated_ddt(spa_t *spa)
2791 {
2792         avl_tree_t t;
2793         void *cookie = NULL;
2794         zdb_ddt_entry_t *zdde;
2795         ddt_histogram_t ddh_total = { 0 };
2796         ddt_stat_t dds_total = { 0 };
2797
2798         avl_create(&t, ddt_entry_compare,
2799             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2800
2801         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2802
2803         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2804             zdb_ddt_add_cb, &t);
2805
2806         spa_config_exit(spa, SCL_CONFIG, FTAG);
2807
2808         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2809                 ddt_stat_t dds;
2810                 uint64_t refcnt = zdde->zdde_ref_blocks;
2811                 ASSERT(refcnt != 0);
2812
2813                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2814                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2815                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2816                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2817
2818                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2819                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2820                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2821                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2822
2823                 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
2824                     &dds, 0);
2825
2826                 umem_free(zdde, sizeof (*zdde));
2827         }
2828
2829         avl_destroy(&t);
2830
2831         ddt_histogram_stat(&dds_total, &ddh_total);
2832
2833         (void) printf("Simulated DDT histogram:\n");
2834
2835         zpool_dump_ddt(&dds_total, &ddh_total);
2836
2837         dump_dedup_ratio(&dds_total);
2838 }
2839
2840 static void
2841 dump_zpool(spa_t *spa)
2842 {
2843         dsl_pool_t *dp = spa_get_dsl(spa);
2844         int rc = 0;
2845
2846         if (dump_opt['S']) {
2847                 dump_simulated_ddt(spa);
2848                 return;
2849         }
2850
2851         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2852                 (void) printf("\nCached configuration:\n");
2853                 dump_nvlist(spa->spa_config, 8);
2854         }
2855
2856         if (dump_opt['C'])
2857                 dump_config(spa);
2858
2859         if (dump_opt['u'])
2860                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2861
2862         if (dump_opt['D'])
2863                 dump_all_ddts(spa);
2864
2865         if (dump_opt['d'] > 2 || dump_opt['m'])
2866                 dump_metaslabs(spa);
2867
2868         if (dump_opt['d'] || dump_opt['i']) {
2869                 dump_dir(dp->dp_meta_objset);
2870                 if (dump_opt['d'] >= 3) {
2871                         dump_bpobj(&spa->spa_deferred_bpobj,
2872                             "Deferred frees", 0);
2873                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2874                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2875                                     "Pool snapshot frees", 0);
2876                         }
2877
2878                         if (spa_feature_is_active(spa,
2879                             SPA_FEATURE_ASYNC_DESTROY)) {
2880                                 dump_bptree(spa->spa_meta_objset,
2881                                     spa->spa_dsl_pool->dp_bptree_obj,
2882                                     "Pool dataset frees");
2883                         }
2884                         dump_dtl(spa->spa_root_vdev, 0);
2885                 }
2886                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2887                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2888         }
2889         if (dump_opt['b'] || dump_opt['c'])
2890                 rc = dump_block_stats(spa);
2891
2892         if (rc == 0)
2893                 rc = verify_spacemap_refcounts(spa);
2894
2895         if (dump_opt['s'])
2896                 show_pool_stats(spa);
2897
2898         if (dump_opt['h'])
2899                 dump_history(spa);
2900
2901         if (rc != 0)
2902                 exit(rc);
2903 }
2904
2905 #define ZDB_FLAG_CHECKSUM       0x0001
2906 #define ZDB_FLAG_DECOMPRESS     0x0002
2907 #define ZDB_FLAG_BSWAP          0x0004
2908 #define ZDB_FLAG_GBH            0x0008
2909 #define ZDB_FLAG_INDIRECT       0x0010
2910 #define ZDB_FLAG_PHYS           0x0020
2911 #define ZDB_FLAG_RAW            0x0040
2912 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2913
2914 int flagbits[256];
2915
2916 static void
2917 zdb_print_blkptr(blkptr_t *bp, int flags)
2918 {
2919         char blkbuf[BP_SPRINTF_LEN];
2920
2921         if (flags & ZDB_FLAG_BSWAP)
2922                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2923
2924         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2925         (void) printf("%s\n", blkbuf);
2926 }
2927
2928 static void
2929 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2930 {
2931         int i;
2932
2933         for (i = 0; i < nbps; i++)
2934                 zdb_print_blkptr(&bp[i], flags);
2935 }
2936
2937 static void
2938 zdb_dump_gbh(void *buf, int flags)
2939 {
2940         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2941 }
2942
2943 static void
2944 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2945 {
2946         if (flags & ZDB_FLAG_BSWAP)
2947                 byteswap_uint64_array(buf, size);
2948         (void) write(1, buf, size);
2949 }
2950
2951 static void
2952 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2953 {
2954         uint64_t *d = (uint64_t *)buf;
2955         int nwords = size / sizeof (uint64_t);
2956         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2957         int i, j;
2958         char *hdr, *c;
2959
2960
2961         if (do_bswap)
2962                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2963         else
2964                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2965
2966         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2967
2968         for (i = 0; i < nwords; i += 2) {
2969                 (void) printf("%06llx:  %016llx  %016llx  ",
2970                     (u_longlong_t)(i * sizeof (uint64_t)),
2971                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2972                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2973
2974                 c = (char *)&d[i];
2975                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2976                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2977                 (void) printf("\n");
2978         }
2979 }
2980
2981 /*
2982  * There are two acceptable formats:
2983  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2984  *      child[.child]*    - For example: 0.1.1
2985  *
2986  * The second form can be used to specify arbitrary vdevs anywhere
2987  * in the heirarchy.  For example, in a pool with a mirror of
2988  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2989  */
2990 static vdev_t *
2991 zdb_vdev_lookup(vdev_t *vdev, char *path)
2992 {
2993         char *s, *p, *q;
2994         int i;
2995
2996         if (vdev == NULL)
2997                 return (NULL);
2998
2999         /* First, assume the x.x.x.x format */
3000         i = (int)strtoul(path, &s, 10);
3001         if (s == path || (s && *s != '.' && *s != '\0'))
3002                 goto name;
3003         if (i < 0 || i >= vdev->vdev_children)
3004                 return (NULL);
3005
3006         vdev = vdev->vdev_child[i];
3007         if (*s == '\0')
3008                 return (vdev);
3009         return (zdb_vdev_lookup(vdev, s+1));
3010
3011 name:
3012         for (i = 0; i < vdev->vdev_children; i++) {
3013                 vdev_t *vc = vdev->vdev_child[i];
3014
3015                 if (vc->vdev_path == NULL) {
3016                         vc = zdb_vdev_lookup(vc, path);
3017                         if (vc == NULL)
3018                                 continue;
3019                         else
3020                                 return (vc);
3021                 }
3022
3023                 p = strrchr(vc->vdev_path, '/');
3024                 p = p ? p + 1 : vc->vdev_path;
3025                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3026
3027                 if (strcmp(vc->vdev_path, path) == 0)
3028                         return (vc);
3029                 if (strcmp(p, path) == 0)
3030                         return (vc);
3031                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3032                         return (vc);
3033         }
3034
3035         return (NULL);
3036 }
3037
3038 /*
3039  * Read a block from a pool and print it out.  The syntax of the
3040  * block descriptor is:
3041  *
3042  *      pool:vdev_specifier:offset:size[:flags]
3043  *
3044  *      pool           - The name of the pool you wish to read from
3045  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3046  *      offset         - offset, in hex, in bytes
3047  *      size           - Amount of data to read, in hex, in bytes
3048  *      flags          - A string of characters specifying options
3049  *               b: Decode a blkptr at given offset within block
3050  *              *c: Calculate and display checksums
3051  *               d: Decompress data before dumping
3052  *               e: Byteswap data before dumping
3053  *               g: Display data as a gang block header
3054  *               i: Display as an indirect block
3055  *               p: Do I/O to physical offset
3056  *               r: Dump raw data to stdout
3057  *
3058  *              * = not yet implemented
3059  */
3060 static void
3061 zdb_read_block(char *thing, spa_t *spa)
3062 {
3063         blkptr_t blk, *bp = &blk;
3064         dva_t *dva = bp->blk_dva;
3065         int flags = 0;
3066         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3067         zio_t *zio;
3068         vdev_t *vd;
3069         void *pbuf, *lbuf, *buf;
3070         char *s, *p, *dup, *vdev, *flagstr;
3071         int i, error;
3072
3073         dup = strdup(thing);
3074         s = strtok(dup, ":");
3075         vdev = s ? s : "";
3076         s = strtok(NULL, ":");
3077         offset = strtoull(s ? s : "", NULL, 16);
3078         s = strtok(NULL, ":");
3079         size = strtoull(s ? s : "", NULL, 16);
3080         s = strtok(NULL, ":");
3081         flagstr = s ? s : "";
3082
3083         s = NULL;
3084         if (size == 0)
3085                 s = "size must not be zero";
3086         if (!IS_P2ALIGNED(size, DEV_BSIZE))
3087                 s = "size must be a multiple of sector size";
3088         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3089                 s = "offset must be a multiple of sector size";
3090         if (s) {
3091                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3092                 free(dup);
3093                 return;
3094         }
3095
3096         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3097                 for (i = 0; flagstr[i]; i++) {
3098                         int bit = flagbits[(uchar_t)flagstr[i]];
3099
3100                         if (bit == 0) {
3101                                 (void) printf("***Invalid flag: %c\n",
3102                                     flagstr[i]);
3103                                 continue;
3104                         }
3105                         flags |= bit;
3106
3107                         /* If it's not something with an argument, keep going */
3108                         if ((bit & (ZDB_FLAG_CHECKSUM |
3109                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3110                                 continue;
3111
3112                         p = &flagstr[i + 1];
3113                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
3114                                 blkptr_offset = strtoull(p, &p, 16);
3115                         if (*p != ':' && *p != '\0') {
3116                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3117                                 free(dup);
3118                                 return;
3119                         }
3120                         i += p - &flagstr[i + 1]; /* skip over the number */
3121                 }
3122         }
3123
3124         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3125         if (vd == NULL) {
3126                 (void) printf("***Invalid vdev: %s\n", vdev);
3127                 free(dup);
3128                 return;
3129         } else {
3130                 if (vd->vdev_path)
3131                         (void) fprintf(stderr, "Found vdev: %s\n",
3132                             vd->vdev_path);
3133                 else
3134                         (void) fprintf(stderr, "Found vdev type: %s\n",
3135                             vd->vdev_ops->vdev_op_type);
3136         }
3137
3138         psize = size;
3139         lsize = size;
3140
3141         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3142         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3143
3144         BP_ZERO(bp);
3145
3146         DVA_SET_VDEV(&dva[0], vd->vdev_id);
3147         DVA_SET_OFFSET(&dva[0], offset);
3148         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3149         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3150
3151         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3152
3153         BP_SET_LSIZE(bp, lsize);
3154         BP_SET_PSIZE(bp, psize);
3155         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3156         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3157         BP_SET_TYPE(bp, DMU_OT_NONE);
3158         BP_SET_LEVEL(bp, 0);
3159         BP_SET_DEDUP(bp, 0);
3160         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3161
3162         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3163         zio = zio_root(spa, NULL, NULL, 0);
3164
3165         if (vd == vd->vdev_top) {
3166                 /*
3167                  * Treat this as a normal block read.
3168                  */
3169                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3170                     ZIO_PRIORITY_SYNC_READ,
3171                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3172         } else {
3173                 /*
3174                  * Treat this as a vdev child I/O.
3175                  */
3176                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3177                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3178                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3179                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3180                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3181         }
3182
3183         error = zio_wait(zio);
3184         spa_config_exit(spa, SCL_STATE, FTAG);
3185
3186         if (error) {
3187                 (void) printf("Read of %s failed, error: %d\n", thing, error);
3188                 goto out;
3189         }
3190
3191         if (flags & ZDB_FLAG_DECOMPRESS) {
3192                 /*
3193                  * We don't know how the data was compressed, so just try
3194                  * every decompress function at every inflated blocksize.
3195                  */
3196                 enum zio_compress c;
3197                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3198                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3199
3200                 bcopy(pbuf, pbuf2, psize);
3201
3202                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3203                     SPA_MAXBLOCKSIZE - psize) == 0);
3204
3205                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3206                     SPA_MAXBLOCKSIZE - psize) == 0);
3207
3208                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3209                     lsize -= SPA_MINBLOCKSIZE) {
3210                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3211                                 if (zio_decompress_data(c, pbuf, lbuf,
3212                                     psize, lsize) == 0 &&
3213                                     zio_decompress_data(c, pbuf2, lbuf2,
3214                                     psize, lsize) == 0 &&
3215                                     bcmp(lbuf, lbuf2, lsize) == 0)
3216                                         break;
3217                         }
3218                         if (c != ZIO_COMPRESS_FUNCTIONS)
3219                                 break;
3220                         lsize -= SPA_MINBLOCKSIZE;
3221                 }
3222
3223                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3224                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3225
3226                 if (lsize <= psize) {
3227                         (void) printf("Decompress of %s failed\n", thing);
3228                         goto out;
3229                 }
3230                 buf = lbuf;
3231                 size = lsize;
3232         } else {
3233                 buf = pbuf;
3234                 size = psize;
3235         }
3236
3237         if (flags & ZDB_FLAG_PRINT_BLKPTR)
3238                 zdb_print_blkptr((blkptr_t *)(void *)
3239                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3240         else if (flags & ZDB_FLAG_RAW)
3241                 zdb_dump_block_raw(buf, size, flags);
3242         else if (flags & ZDB_FLAG_INDIRECT)
3243                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3244                     flags);
3245         else if (flags & ZDB_FLAG_GBH)
3246                 zdb_dump_gbh(buf, flags);
3247         else
3248                 zdb_dump_block(thing, buf, size, flags);
3249
3250 out:
3251         umem_free(pbuf, SPA_MAXBLOCKSIZE);
3252         umem_free(lbuf, SPA_MAXBLOCKSIZE);
3253         free(dup);
3254 }
3255
3256 static boolean_t
3257 pool_match(nvlist_t *cfg, char *tgt)
3258 {
3259         uint64_t v, guid = strtoull(tgt, NULL, 0);
3260         char *s;
3261
3262         if (guid != 0) {
3263                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3264                         return (v == guid);
3265         } else {
3266                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3267                         return (strcmp(s, tgt) == 0);
3268         }
3269         return (B_FALSE);
3270 }
3271
3272 static char *
3273 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3274 {
3275         nvlist_t *pools;
3276         nvlist_t *match = NULL;
3277         char *name = NULL;
3278         char *sepp = NULL;
3279         char sep;
3280         int count = 0;
3281         importargs_t args = { 0 };
3282
3283         args.paths = dirc;
3284         args.path = dirv;
3285         args.can_be_active = B_TRUE;
3286
3287         if ((sepp = strpbrk(*target, "/@")) != NULL) {
3288                 sep = *sepp;
3289                 *sepp = '\0';
3290         }
3291
3292         pools = zpool_search_import(g_zfs, &args);
3293
3294         if (pools != NULL) {
3295                 nvpair_t *elem = NULL;
3296                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3297                         verify(nvpair_value_nvlist(elem, configp) == 0);
3298                         if (pool_match(*configp, *target)) {
3299                                 count++;
3300                                 if (match != NULL) {
3301                                         /* print previously found config */
3302                                         if (name != NULL) {
3303                                                 (void) printf("%s\n", name);
3304                                                 dump_nvlist(match, 8);
3305                                                 name = NULL;
3306                                         }
3307                                         (void) printf("%s\n",
3308                                             nvpair_name(elem));
3309                                         dump_nvlist(*configp, 8);
3310                                 } else {
3311                                         match = *configp;
3312                                         name = nvpair_name(elem);
3313                                 }
3314                         }
3315                 }
3316         }
3317         if (count > 1)
3318                 (void) fatal("\tMatched %d pools - use pool GUID "
3319                     "instead of pool name or \n"
3320                     "\tpool name part of a dataset name to select pool", count);
3321
3322         if (sepp)
3323                 *sepp = sep;
3324         /*
3325          * If pool GUID was specified for pool id, replace it with pool name
3326          */
3327         if (name && (strstr(*target, name) != *target)) {
3328                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3329
3330                 *target = umem_alloc(sz, UMEM_NOFAIL);
3331                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3332         }
3333
3334         *configp = name ? match : NULL;
3335
3336         return (name);
3337 }
3338
3339 int
3340 main(int argc, char **argv)
3341 {
3342         int i, c;
3343         struct rlimit rl = { 1024, 1024 };
3344         spa_t *spa = NULL;
3345         objset_t *os = NULL;
3346         int dump_all = 1;
3347         int verbose = 0;
3348         int error = 0;
3349         char **searchdirs = NULL;
3350         int nsearch = 0;
3351         char *target;
3352         nvlist_t *policy = NULL;
3353         uint64_t max_txg = UINT64_MAX;
3354         int rewind = ZPOOL_NEVER_REWIND;
3355
3356         (void) setrlimit(RLIMIT_NOFILE, &rl);
3357         (void) enable_extended_FILE_stdio(-1, -1);
3358
3359         dprintf_setup(&argc, argv);
3360
3361         while ((c = getopt(argc, argv,
3362             "bcdhilmM:suCDRSAFLXx:evp:t:U:P")) != -1) {
3363                 switch (c) {
3364                 case 'b':
3365                 case 'c':
3366                 case 'd':
3367                 case 'h':
3368                 case 'i':
3369                 case 'l':
3370                 case 'm':
3371                 case 's':
3372                 case 'u':
3373                 case 'C':
3374                 case 'D':
3375                 case 'R':
3376                 case 'S':
3377                         dump_opt[c]++;
3378                         dump_all = 0;
3379                         break;
3380                 case 'A':
3381                 case 'F':
3382                 case 'L':
3383                 case 'X':
3384                 case 'e':
3385                 case 'P':
3386                         dump_opt[c]++;
3387                         break;
3388                 case 'v':
3389                         verbose++;
3390                         break;
3391                 case 'M':
3392                         max_inflight = strtoull(optarg, NULL, 0);
3393                         if (max_inflight == 0) {
3394                                 (void) fprintf(stderr, "maximum number "
3395                                     "of inflight I/Os must be greater "
3396                                     "than 0\n");
3397                                 usage();
3398                         }
3399                         break;
3400                 case 'p':
3401                         if (searchdirs == NULL) {
3402                                 searchdirs = umem_alloc(sizeof (char *),
3403                                     UMEM_NOFAIL);
3404                         } else {
3405                                 char **tmp = umem_alloc((nsearch + 1) *
3406                                     sizeof (char *), UMEM_NOFAIL);
3407                                 bcopy(searchdirs, tmp, nsearch *
3408                                     sizeof (char *));
3409                                 umem_free(searchdirs,
3410                                     nsearch * sizeof (char *));
3411                                 searchdirs = tmp;
3412                         }
3413                         searchdirs[nsearch++] = optarg;
3414                         break;
3415                 case 'x':
3416                         vn_dumpdir = optarg;
3417                         break;
3418                 case 't':
3419                         max_txg = strtoull(optarg, NULL, 0);
3420                         if (max_txg < TXG_INITIAL) {
3421                                 (void) fprintf(stderr, "incorrect txg "
3422                                     "specified: %s\n", optarg);
3423                                 usage();
3424                         }
3425                         break;
3426                 case 'U':
3427                         spa_config_path = optarg;
3428                         break;
3429                 default:
3430                         usage();
3431                         break;
3432                 }
3433         }
3434
3435         if (!dump_opt['e'] && searchdirs != NULL) {
3436                 (void) fprintf(stderr, "-p option requires use of -e\n");
3437                 usage();
3438         }
3439
3440         kernel_init(FREAD);
3441         g_zfs = libzfs_init();
3442         ASSERT(g_zfs != NULL);
3443
3444         if (dump_all)
3445                 verbose = MAX(verbose, 1);
3446
3447         for (c = 0; c < 256; c++) {
3448                 if (dump_all && !strchr("elAFLRSXP", c))
3449                         dump_opt[c] = 1;
3450                 if (dump_opt[c])
3451                         dump_opt[c] += verbose;
3452         }
3453
3454         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3455         zfs_recover = (dump_opt['A'] > 1);
3456
3457         argc -= optind;
3458         argv += optind;
3459
3460         if (argc < 2 && dump_opt['R'])
3461                 usage();
3462         if (argc < 1) {
3463                 if (!dump_opt['e'] && dump_opt['C']) {
3464                         dump_cachefile(spa_config_path);
3465                         return (0);
3466                 }
3467                 usage();
3468         }
3469
3470         if (dump_opt['l']) {
3471                 dump_label(argv[0]);
3472                 return (0);
3473         }
3474
3475         if (dump_opt['X'] || dump_opt['F'])
3476                 rewind = ZPOOL_DO_REWIND |
3477                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3478
3479         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3480             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3481             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3482                 fatal("internal error: %s", strerror(ENOMEM));
3483
3484         error = 0;
3485         target = argv[0];
3486
3487         if (dump_opt['e']) {
3488                 nvlist_t *cfg = NULL;
3489                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3490
3491                 error = ENOENT;
3492                 if (name) {
3493                         if (dump_opt['C'] > 1) {
3494                                 (void) printf("\nConfiguration for import:\n");
3495                                 dump_nvlist(cfg, 8);
3496                         }
3497                         if (nvlist_add_nvlist(cfg,
3498                             ZPOOL_REWIND_POLICY, policy) != 0) {
3499                                 fatal("can't open '%s': %s",
3500                                     target, strerror(ENOMEM));
3501                         }
3502                         if ((error = spa_import(name, cfg, NULL,
3503                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3504                                 error = spa_import(name, cfg, NULL,
3505                                     ZFS_IMPORT_VERBATIM);
3506                         }
3507                 }
3508         }
3509
3510         if (error == 0) {
3511                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3512                         error = spa_open_rewind(target, &spa, FTAG, policy,
3513                             NULL);
3514                         if (error) {
3515                                 /*
3516                                  * If we're missing the log device then
3517                                  * try opening the pool after clearing the
3518                                  * log state.
3519                                  */
3520                                 mutex_enter(&spa_namespace_lock);
3521                                 if ((spa = spa_lookup(target)) != NULL &&
3522                                     spa->spa_log_state == SPA_LOG_MISSING) {
3523                                         spa->spa_log_state = SPA_LOG_CLEAR;
3524                                         error = 0;
3525                                 }
3526                                 mutex_exit(&spa_namespace_lock);
3527
3528                                 if (!error) {
3529                                         error = spa_open_rewind(target, &spa,
3530                                             FTAG, policy, NULL);
3531                                 }
3532                         }
3533                 } else {
3534                         error = dmu_objset_own(target, DMU_OST_ANY,
3535                             B_TRUE, FTAG, &os);
3536                 }
3537         }
3538         nvlist_free(policy);
3539
3540         if (error)
3541                 fatal("can't open '%s': %s", target, strerror(error));
3542
3543         argv++;
3544         argc--;
3545         if (!dump_opt['R']) {
3546                 if (argc > 0) {
3547                         zopt_objects = argc;
3548                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3549                         for (i = 0; i < zopt_objects; i++) {
3550                                 errno = 0;
3551                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3552                                 if (zopt_object[i] == 0 && errno != 0)
3553                                         fatal("bad number %s: %s",
3554                                             argv[i], strerror(errno));
3555                         }
3556                 }
3557                 if (os != NULL) {
3558                         dump_dir(os);
3559                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3560                         dump_dir(spa->spa_meta_objset);
3561                 } else {
3562                         dump_zpool(spa);
3563                 }
3564         } else {
3565                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3566                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3567                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3568                 flagbits['e'] = ZDB_FLAG_BSWAP;
3569                 flagbits['g'] = ZDB_FLAG_GBH;
3570                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3571                 flagbits['p'] = ZDB_FLAG_PHYS;
3572                 flagbits['r'] = ZDB_FLAG_RAW;
3573
3574                 for (i = 0; i < argc; i++)
3575                         zdb_read_block(argv[i], spa);
3576         }
3577
3578         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3579
3580         fuid_table_destroy();
3581         sa_loaded = B_FALSE;
3582
3583         libzfs_fini(g_zfs);
3584         kernel_fini();
3585
3586         return (0);
3587 }