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