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