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) 2011, 2016 by Delphix. All rights reserved.
  25  * Copyright (c) 2014 Integros [integros.com]
  26  * Copyright 2017 Nexenta Systems, Inc.
  27  */
  28
  29 #include <stdio.h>
  30 #include <unistd.h>
  31 #include <stdio_ext.h>
  32 #include <stdlib.h>
  33 #include <ctype.h>
  34 #include <sys/zfs_context.h>
  35 #include <sys/spa.h>
  36 #include <sys/spa_impl.h>
  37 #include <sys/dmu.h>
  38 #include <sys/zap.h>
  39 #include <sys/fs/zfs.h>
  40 #include <sys/zfs_znode.h>
  41 #include <sys/zfs_sa.h>
  42 #include <sys/sa.h>
  43 #include <sys/sa_impl.h>
  44 #include <sys/vdev.h>
  45 #include <sys/vdev_impl.h>
  46 #include <sys/metaslab_impl.h>
  47 #include <sys/dmu_objset.h>
  48 #include <sys/dsl_dir.h>
  49 #include <sys/dsl_dataset.h>
  50 #include <sys/dsl_pool.h>
  51 #include <sys/dbuf.h>
  52 #include <sys/zil.h>
  53 #include <sys/zil_impl.h>
  54 #include <sys/stat.h>
  55 #include <sys/resource.h>
  56 #include <sys/dmu_traverse.h>
  57 #include <sys/zio_checksum.h>
  58 #include <sys/zio_compress.h>
  59 #include <sys/zfs_fuid.h>
  60 #include <sys/arc.h>
  61 #include <sys/ddt.h>
  62 #include <sys/zfeature.h>
  63 #include <sys/abd.h>
  64 #include <zfs_comutil.h>
  65 #undef verify
  66 #include <libzfs.h>
  67
  68 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?        \
  69         zio_compress_table[(idx)].ci_name : "UNKNOWN")
  70 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?        \
  71         zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  72 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?     \
  73         dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?  \
  74         dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
  75 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :             \
  76         (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
  77         DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
  78
  79 #ifndef lint
  80 extern int reference_tracking_enable;
  81 extern boolean_t zfs_recover;
  82 extern uint64_t zfs_arc_max, zfs_arc_meta_limit;
  83 extern int zfs_vdev_async_read_max_active;
  84 #else
  85 int reference_tracking_enable;
  86 boolean_t zfs_recover;
  87 uint64_t zfs_arc_max, zfs_arc_meta_limit;
  88 int zfs_vdev_async_read_max_active;
  89 #endif
  90
  91 const char cmdname[] = "zdb";
  92 uint8_t dump_opt[256];
  93
  94 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  95
  96 extern void dump_intent_log(zilog_t *);
  97 static uint64_t *zopt_object = NULL;
  98 static int zopt_objects = 0;
  99 static libzfs_handle_t *g_zfs;
 100 static uint64_t max_inflight = 1000;
 101
 102 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *);
 103
 104 /*
 105  * These libumem hooks provide a reasonable set of defaults for the allocator's
 106  * debugging facilities.
 107  */
 108 const char *
 109 _umem_debug_init()
 110 {
 111         return ("default,verbose"); /* $UMEM_DEBUG setting */
 112 }
 113
 114 const char *
 115 _umem_logging_init(void)
 116 {
 117         return ("fail,contents"); /* $UMEM_LOGGING setting */
 118 }
 119
 120 static void
 121 usage(void)
 122 {
 123         (void) fprintf(stderr,
 124             "Usage:\t%s [-AbcdDFGhiLMPsvX] [-e [-V] [-p <path> ...]] "
 125             "[-I <inflight I/Os>]\n"
 126             "\t\t[-o <var>=<value>]... [-t <txg>] [-U <cache>] [-x <dumpdir>]\n"
 127             "\t\t[<poolname> [<object> ...]]\n"
 128             "\t%s [-AdiPv] [-e [-V] [-p <path> ...]] [-U <cache>] <dataset> "
 129             "[<object> ...]\n"
 130             "\t%s -C [-A] [-U <cache>]\n"
 131             "\t%s -l [-Aqu] <device>\n"
 132             "\t%s -m [-AFLPX] [-e [-V] [-p <path> ...]] [-t <txg>] "
 133             "[-U <cache>]\n\t\t<poolname> [<vdev> [<metaslab> ...]]\n"
 134             "\t%s -O <dataset> <path>\n"
 135             "\t%s -R [-A] [-e [-V] [-p <path> ...]] [-U <cache>]\n"
 136             "\t\t<poolname> <vdev>:<offset>:<size>[:<flags>]\n"
 137             "\t%s -S [-AP] [-e [-V] [-p <path> ...]] [-U <cache>] "
 138             "<poolname>\n\n",
 139             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname,
 140             cmdname);
 141
 142         (void) fprintf(stderr, "    Dataset name must include at least one "
 143             "separator character '/' or '@'\n");
 144         (void) fprintf(stderr, "    If dataset name is specified, only that "
 145             "dataset is dumped\n");
 146         (void) fprintf(stderr, "    If object numbers are specified, only "
 147             "those objects are dumped\n\n");
 148         (void) fprintf(stderr, "    Options to control amount of output:\n");
 149         (void) fprintf(stderr, "        -b block statistics\n");
 150         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 151             "all data) blocks\n");
 152         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 153         (void) fprintf(stderr, "        -d dataset(s)\n");
 154         (void) fprintf(stderr, "        -D dedup statistics\n");
 155         (void) fprintf(stderr, "        -h pool history\n");
 156         (void) fprintf(stderr, "        -i intent logs\n");
 157         (void) fprintf(stderr, "        -l read label contents\n");
 158         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 159             "load spacemaps)\n");
 160         (void) fprintf(stderr, "        -m metaslabs\n");
 161         (void) fprintf(stderr, "        -M metaslab groups\n");
 162         (void) fprintf(stderr, "        -O perform object lookups by path\n");
 163         (void) fprintf(stderr, "        -R read and display block from a "
 164             "device\n");
 165         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 166         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 167         (void) fprintf(stderr, "        -v verbose (applies to all "
 168             "others)\n\n");
 169         (void) fprintf(stderr, "    Below options are intended for use "
 170             "with other options:\n");
 171         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 172             "panic recovery (-AA) or both (-AAA)\n");
 173         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 174             "has altroot/not in a cachefile\n");
 175         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 176             "safe range of transaction groups\n");
 177         (void) fprintf(stderr, "        -G dump zfs_dbgmsg buffer before "
 178             "exiting\n");
 179         (void) fprintf(stderr, "        -I <number of inflight I/Os> -- "
 180             "specify the maximum number of "
 181             "checksumming I/Os [default is 200]\n");
 182         (void) fprintf(stderr, "        -o <variable>=<value> set global "
 183             "variable to an unsigned 32-bit integer value\n");
 184         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 185             "-e to specify path to vdev dir\n");
 186         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 187         (void) fprintf(stderr, "        -q don't print label contents\n");
 188         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 189             "searching for uberblocks\n");
 190         (void) fprintf(stderr, "        -u uberblock\n");
 191         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 192             "cachefile\n");
 193         (void) fprintf(stderr, "        -V do verbatim import\n");
 194         (void) fprintf(stderr, "        -x <dumpdir> -- "
 195             "dump all read blocks into specified directory\n");
 196         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 197             "work with dataset)\n\n");
 198         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 199             "to make only that option verbose\n");
 200         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 201         exit(1);
 202 }
 203
 204 static void
 205 dump_debug_buffer()
 206 {
 207         if (dump_opt['G']) {
 208                 (void) printf("\n");
 209                 zfs_dbgmsg_print("zdb");
 210         }
 211 }
 212
 213 /*
 214  * Called for usage errors that are discovered after a call to spa_open(),
 215  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 216  */
 217
 218 static void
 219 fatal(const char *fmt, ...)
 220 {
 221         va_list ap;
 222
 223         va_start(ap, fmt);
 224         (void) fprintf(stderr, "%s: ", cmdname);
 225         (void) vfprintf(stderr, fmt, ap);
 226         va_end(ap);
 227         (void) fprintf(stderr, "\n");
 228
 229         dump_debug_buffer();
 230
 231         exit(1);
 232 }
 233
 234 /* ARGSUSED */
 235 static void
 236 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 237 {
 238         nvlist_t *nv;
 239         size_t nvsize = *(uint64_t *)data;
 240         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 241
 242         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 243
 244         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 245
 246         umem_free(packed, nvsize);
 247
 248         dump_nvlist(nv, 8);
 249
 250         nvlist_free(nv);
 251 }
 252
 253 /* ARGSUSED */
 254 static void
 255 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
 256 {
 257         spa_history_phys_t *shp = data;
 258
 259         if (shp == NULL)
 260                 return;
 261
 262         (void) printf("\t\tpool_create_len = %llu\n",
 263             (u_longlong_t)shp->sh_pool_create_len);
 264         (void) printf("\t\tphys_max_off = %llu\n",
 265             (u_longlong_t)shp->sh_phys_max_off);
 266         (void) printf("\t\tbof = %llu\n",
 267             (u_longlong_t)shp->sh_bof);
 268         (void) printf("\t\teof = %llu\n",
 269             (u_longlong_t)shp->sh_eof);
 270         (void) printf("\t\trecords_lost = %llu\n",
 271             (u_longlong_t)shp->sh_records_lost);
 272 }
 273
 274 static void
 275 zdb_nicenum(uint64_t num, char *buf)
 276 {
 277         if (dump_opt['P'])
 278                 (void) sprintf(buf, "%llu", (longlong_t)num);
 279         else
 280                 nicenum(num, buf);
 281 }
 282
 283 const char histo_stars[] = "****************************************";
 284 const int histo_width = sizeof (histo_stars) - 1;
 285
 286 static void
 287 dump_histogram(const uint64_t *histo, int size, int offset)
 288 {
 289         int i;
 290         int minidx = size - 1;
 291         int maxidx = 0;
 292         uint64_t max = 0;
 293
 294         for (i = 0; i < size; i++) {
 295                 if (histo[i] > max)
 296                         max = histo[i];
 297                 if (histo[i] > 0 && i > maxidx)
 298                         maxidx = i;
 299                 if (histo[i] > 0 && i < minidx)
 300                         minidx = i;
 301         }
 302
 303         if (max < histo_width)
 304                 max = histo_width;
 305
 306         for (i = minidx; i <= maxidx; i++) {
 307                 (void) printf("\t\t\t%3u: %6llu %s\n",
 308                     i + offset, (u_longlong_t)histo[i],
 309                     &histo_stars[(max - histo[i]) * histo_width / max]);
 310         }
 311 }
 312
 313 static void
 314 dump_zap_stats(objset_t *os, uint64_t object)
 315 {
 316         int error;
 317         zap_stats_t zs;
 318
 319         error = zap_get_stats(os, object, &zs);
 320         if (error)
 321                 return;
 322
 323         if (zs.zs_ptrtbl_len == 0) {
 324                 ASSERT(zs.zs_num_blocks == 1);
 325                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 326                     (u_longlong_t)zs.zs_blocksize,
 327                     (u_longlong_t)zs.zs_num_entries);
 328                 return;
 329         }
 330
 331         (void) printf("\tFat ZAP stats:\n");
 332
 333         (void) printf("\t\tPointer table:\n");
 334         (void) printf("\t\t\t%llu elements\n",
 335             (u_longlong_t)zs.zs_ptrtbl_len);
 336         (void) printf("\t\t\tzt_blk: %llu\n",
 337             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 338         (void) printf("\t\t\tzt_numblks: %llu\n",
 339             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 340         (void) printf("\t\t\tzt_shift: %llu\n",
 341             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 342         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 343             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 344         (void) printf("\t\t\tzt_nextblk: %llu\n",
 345             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 346
 347         (void) printf("\t\tZAP entries: %llu\n",
 348             (u_longlong_t)zs.zs_num_entries);
 349         (void) printf("\t\tLeaf blocks: %llu\n",
 350             (u_longlong_t)zs.zs_num_leafs);
 351         (void) printf("\t\tTotal blocks: %llu\n",
 352             (u_longlong_t)zs.zs_num_blocks);
 353         (void) printf("\t\tzap_block_type: 0x%llx\n",
 354             (u_longlong_t)zs.zs_block_type);
 355         (void) printf("\t\tzap_magic: 0x%llx\n",
 356             (u_longlong_t)zs.zs_magic);
 357         (void) printf("\t\tzap_salt: 0x%llx\n",
 358             (u_longlong_t)zs.zs_salt);
 359
 360         (void) printf("\t\tLeafs with 2^n pointers:\n");
 361         dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
 362
 363         (void) printf("\t\tBlocks with n*5 entries:\n");
 364         dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
 365
 366         (void) printf("\t\tBlocks n/10 full:\n");
 367         dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
 368
 369         (void) printf("\t\tEntries with n chunks:\n");
 370         dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
 371
 372         (void) printf("\t\tBuckets with n entries:\n");
 373         dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
 374 }
 375
 376 /*ARGSUSED*/
 377 static void
 378 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 379 {
 380 }
 381
 382 /*ARGSUSED*/
 383 static void
 384 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 385 {
 386         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 387 }
 388
 389 /*ARGSUSED*/
 390 void
 391 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 392 {
 393 }
 394
 395 /*ARGSUSED*/
 396 static void
 397 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 398 {
 399 }
 400
 401 /*ARGSUSED*/
 402 static void
 403 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 404 {
 405         zap_cursor_t zc;
 406         zap_attribute_t attr;
 407         void *prop;
 408         int i;
 409
 410         dump_zap_stats(os, object);
 411         (void) printf("\n");
 412
 413         for (zap_cursor_init(&zc, os, object);
 414             zap_cursor_retrieve(&zc, &attr) == 0;
 415             zap_cursor_advance(&zc)) {
 416                 (void) printf("\t\t%s = ", attr.za_name);
 417                 if (attr.za_num_integers == 0) {
 418                         (void) printf("\n");
 419                         continue;
 420                 }
 421                 prop = umem_zalloc(attr.za_num_integers *
 422                     attr.za_integer_length, UMEM_NOFAIL);
 423                 (void) zap_lookup(os, object, attr.za_name,
 424                     attr.za_integer_length, attr.za_num_integers, prop);
 425                 if (attr.za_integer_length == 1) {
 426                         (void) printf("%s", (char *)prop);
 427                 } else {
 428                         for (i = 0; i < attr.za_num_integers; i++) {
 429                                 switch (attr.za_integer_length) {
 430                                 case 2:
 431                                         (void) printf("%u ",
 432                                             ((uint16_t *)prop)[i]);
 433                                         break;
 434                                 case 4:
 435                                         (void) printf("%u ",
 436                                             ((uint32_t *)prop)[i]);
 437                                         break;
 438                                 case 8:
 439                                         (void) printf("%lld ",
 440                                             (u_longlong_t)((int64_t *)prop)[i]);
 441                                         break;
 442                                 }
 443                         }
 444                 }
 445                 (void) printf("\n");
 446                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 447         }
 448         zap_cursor_fini(&zc);
 449 }
 450
 451 static void
 452 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size)
 453 {
 454         bpobj_phys_t *bpop = data;
 455         char bytes[32], comp[32], uncomp[32];
 456
 457         if (bpop == NULL)
 458                 return;
 459
 460         zdb_nicenum(bpop->bpo_bytes, bytes);
 461         zdb_nicenum(bpop->bpo_comp, comp);
 462         zdb_nicenum(bpop->bpo_uncomp, uncomp);
 463
 464         (void) printf("\t\tnum_blkptrs = %llu\n",
 465             (u_longlong_t)bpop->bpo_num_blkptrs);
 466         (void) printf("\t\tbytes = %s\n", bytes);
 467         if (size >= BPOBJ_SIZE_V1) {
 468                 (void) printf("\t\tcomp = %s\n", comp);
 469                 (void) printf("\t\tuncomp = %s\n", uncomp);
 470         }
 471         if (size >= sizeof (*bpop)) {
 472                 (void) printf("\t\tsubobjs = %llu\n",
 473                     (u_longlong_t)bpop->bpo_subobjs);
 474                 (void) printf("\t\tnum_subobjs = %llu\n",
 475                     (u_longlong_t)bpop->bpo_num_subobjs);
 476         }
 477
 478         if (dump_opt['d'] < 5)
 479                 return;
 480
 481         for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) {
 482                 char blkbuf[BP_SPRINTF_LEN];
 483                 blkptr_t bp;
 484
 485                 int err = dmu_read(os, object,
 486                     i * sizeof (bp), sizeof (bp), &bp, 0);
 487                 if (err != 0) {
 488                         (void) printf("got error %u from dmu_read\n", err);
 489                         break;
 490                 }
 491                 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp);
 492                 (void) printf("\t%s\n", blkbuf);
 493         }
 494 }
 495
 496 /* ARGSUSED */
 497 static void
 498 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size)
 499 {
 500         dmu_object_info_t doi;
 501
 502         VERIFY0(dmu_object_info(os, object, &doi));
 503         uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP);
 504
 505         int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0);
 506         if (err != 0) {
 507                 (void) printf("got error %u from dmu_read\n", err);
 508                 kmem_free(subobjs, doi.doi_max_offset);
 509                 return;
 510         }
 511
 512         int64_t last_nonzero = -1;
 513         for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) {
 514                 if (subobjs[i] != 0)
 515                         last_nonzero = i;
 516         }
 517
 518         for (int64_t i = 0; i <= last_nonzero; i++) {
 519                 (void) printf("\t%llu\n", (longlong_t)subobjs[i]);
 520         }
 521         kmem_free(subobjs, doi.doi_max_offset);
 522 }
 523
 524 /*ARGSUSED*/
 525 static void
 526 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 527 {
 528         dump_zap_stats(os, object);
 529         /* contents are printed elsewhere, properly decoded */
 530 }
 531
 532 /*ARGSUSED*/
 533 static void
 534 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 535 {
 536         zap_cursor_t zc;
 537         zap_attribute_t attr;
 538
 539         dump_zap_stats(os, object);
 540         (void) printf("\n");
 541
 542         for (zap_cursor_init(&zc, os, object);
 543             zap_cursor_retrieve(&zc, &attr) == 0;
 544             zap_cursor_advance(&zc)) {
 545                 (void) printf("\t\t%s = ", attr.za_name);
 546                 if (attr.za_num_integers == 0) {
 547                         (void) printf("\n");
 548                         continue;
 549                 }
 550                 (void) printf(" %llx : [%d:%d:%d]\n",
 551                     (u_longlong_t)attr.za_first_integer,
 552                     (int)ATTR_LENGTH(attr.za_first_integer),
 553                     (int)ATTR_BSWAP(attr.za_first_integer),
 554                     (int)ATTR_NUM(attr.za_first_integer));
 555         }
 556         zap_cursor_fini(&zc);
 557 }
 558
 559 /*ARGSUSED*/
 560 static void
 561 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 562 {
 563         zap_cursor_t zc;
 564         zap_attribute_t attr;
 565         uint16_t *layout_attrs;
 566         int i;
 567
 568         dump_zap_stats(os, object);
 569         (void) printf("\n");
 570
 571         for (zap_cursor_init(&zc, os, object);
 572             zap_cursor_retrieve(&zc, &attr) == 0;
 573             zap_cursor_advance(&zc)) {
 574                 (void) printf("\t\t%s = [", attr.za_name);
 575                 if (attr.za_num_integers == 0) {
 576                         (void) printf("\n");
 577                         continue;
 578                 }
 579
 580                 VERIFY(attr.za_integer_length == 2);
 581                 layout_attrs = umem_zalloc(attr.za_num_integers *
 582                     attr.za_integer_length, UMEM_NOFAIL);
 583
 584                 VERIFY(zap_lookup(os, object, attr.za_name,
 585                     attr.za_integer_length,
 586                     attr.za_num_integers, layout_attrs) == 0);
 587
 588                 for (i = 0; i != attr.za_num_integers; i++)
 589                         (void) printf(" %d ", (int)layout_attrs[i]);
 590                 (void) printf("]\n");
 591                 umem_free(layout_attrs,
 592                     attr.za_num_integers * attr.za_integer_length);
 593         }
 594         zap_cursor_fini(&zc);
 595 }
 596
 597 /*ARGSUSED*/
 598 static void
 599 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 600 {
 601         zap_cursor_t zc;
 602         zap_attribute_t attr;
 603         const char *typenames[] = {
 604                 /* 0 */ "not specified",
 605                 /* 1 */ "FIFO",
 606                 /* 2 */ "Character Device",
 607                 /* 3 */ "3 (invalid)",
 608                 /* 4 */ "Directory",
 609                 /* 5 */ "5 (invalid)",
 610                 /* 6 */ "Block Device",
 611                 /* 7 */ "7 (invalid)",
 612                 /* 8 */ "Regular File",
 613                 /* 9 */ "9 (invalid)",
 614                 /* 10 */ "Symbolic Link",
 615                 /* 11 */ "11 (invalid)",
 616                 /* 12 */ "Socket",
 617                 /* 13 */ "Door",
 618                 /* 14 */ "Event Port",
 619                 /* 15 */ "15 (invalid)",
 620         };
 621
 622         dump_zap_stats(os, object);
 623         (void) printf("\n");
 624
 625         for (zap_cursor_init(&zc, os, object);
 626             zap_cursor_retrieve(&zc, &attr) == 0;
 627             zap_cursor_advance(&zc)) {
 628                 (void) printf("\t\t%s = %lld (type: %s)\n",
 629                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 630                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 631         }
 632         zap_cursor_fini(&zc);
 633 }
 634
 635 int
 636 get_dtl_refcount(vdev_t *vd)
 637 {
 638         int refcount = 0;
 639
 640         if (vd->vdev_ops->vdev_op_leaf) {
 641                 space_map_t *sm = vd->vdev_dtl_sm;
 642
 643                 if (sm != NULL &&
 644                     sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 645                         return (1);
 646                 return (0);
 647         }
 648
 649         for (int c = 0; c < vd->vdev_children; c++)
 650                 refcount += get_dtl_refcount(vd->vdev_child[c]);
 651         return (refcount);
 652 }
 653
 654 int
 655 get_metaslab_refcount(vdev_t *vd)
 656 {
 657         int refcount = 0;
 658
 659         if (vd->vdev_top == vd && !vd->vdev_removing) {
 660                 for (int m = 0; m < vd->vdev_ms_count; m++) {
 661                         space_map_t *sm = vd->vdev_ms[m]->ms_sm;
 662
 663                         if (sm != NULL &&
 664                             sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 665                                 refcount++;
 666                 }
 667         }
 668         for (int c = 0; c < vd->vdev_children; c++)
 669                 refcount += get_metaslab_refcount(vd->vdev_child[c]);
 670
 671         return (refcount);
 672 }
 673
 674 static int
 675 verify_spacemap_refcounts(spa_t *spa)
 676 {
 677         uint64_t expected_refcount = 0;
 678         uint64_t actual_refcount;
 679
 680         (void) feature_get_refcount(spa,
 681             &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
 682             &expected_refcount);
 683         actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
 684         actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
 685
 686         if (expected_refcount != actual_refcount) {
 687                 (void) printf("space map refcount mismatch: expected %lld != "
 688                     "actual %lld\n",
 689                     (longlong_t)expected_refcount,
 690                     (longlong_t)actual_refcount);
 691                 return (2);
 692         }
 693         return (0);
 694 }
 695
 696 static void
 697 dump_spacemap(objset_t *os, space_map_t *sm)
 698 {
 699         uint64_t alloc, offset, entry;
 700         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 701                             "INVALID", "INVALID", "INVALID", "INVALID" };
 702
 703         if (sm == NULL)
 704                 return;
 705
 706         /*
 707          * Print out the freelist entries in both encoded and decoded form.
 708          */
 709         alloc = 0;
 710         for (offset = 0; offset < space_map_length(sm);
 711             offset += sizeof (entry)) {
 712                 uint8_t mapshift = sm->sm_shift;
 713
 714                 VERIFY0(dmu_read(os, space_map_object(sm), offset,
 715                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 716                 if (SM_DEBUG_DECODE(entry)) {
 717
 718                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 719                             (u_longlong_t)(offset / sizeof (entry)),
 720                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 721                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 722                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 723                 } else {
 724                         (void) printf("\t    [%6llu]    %c  range:"
 725                             " %010llx-%010llx  size: %06llx\n",
 726                             (u_longlong_t)(offset / sizeof (entry)),
 727                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 728                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 729                             mapshift) + sm->sm_start),
 730                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 731                             mapshift) + sm->sm_start +
 732                             (SM_RUN_DECODE(entry) << mapshift)),
 733                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 734                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 735                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 736                         else
 737                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 738                 }
 739         }
 740         if (alloc != space_map_allocated(sm)) {
 741                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 742                     "with space map summary (%llu)\n",
 743                     (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
 744         }
 745 }
 746
 747 static void
 748 dump_metaslab_stats(metaslab_t *msp)
 749 {
 750         char maxbuf[32];
 751         range_tree_t *rt = msp->ms_tree;
 752         avl_tree_t *t = &msp->ms_size_tree;
 753         int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
 754
 755         zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
 756
 757         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 758             "segments", avl_numnodes(t), "maxsize", maxbuf,
 759             "freepct", free_pct);
 760         (void) printf("\tIn-memory histogram:\n");
 761         dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 762 }
 763
 764 static void
 765 dump_metaslab(metaslab_t *msp)
 766 {
 767         vdev_t *vd = msp->ms_group->mg_vd;
 768         spa_t *spa = vd->vdev_spa;
 769         space_map_t *sm = msp->ms_sm;
 770         char freebuf[32];
 771
 772         zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
 773
 774         (void) printf(
 775             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 776             (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
 777             (u_longlong_t)space_map_object(sm), freebuf);
 778
 779         if (dump_opt['m'] > 2 && !dump_opt['L']) {
 780                 mutex_enter(&msp->ms_lock);
 781                 metaslab_load_wait(msp);
 782                 if (!msp->ms_loaded) {
 783                         VERIFY0(metaslab_load(msp));
 784                         range_tree_stat_verify(msp->ms_tree);
 785                 }
 786                 dump_metaslab_stats(msp);
 787                 metaslab_unload(msp);
 788                 mutex_exit(&msp->ms_lock);
 789         }
 790
 791         if (dump_opt['m'] > 1 && sm != NULL &&
 792             spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
 793                 /*
 794                  * The space map histogram represents free space in chunks
 795                  * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
 796                  */
 797                 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
 798                     (u_longlong_t)msp->ms_fragmentation);
 799                 dump_histogram(sm->sm_phys->smp_histogram,
 800                     SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
 801         }
 802
 803         if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
 804                 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
 805
 806                 mutex_enter(&msp->ms_lock);
 807                 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
 808                 mutex_exit(&msp->ms_lock);
 809         }
 810 }
 811
 812 static void
 813 print_vdev_metaslab_header(vdev_t *vd)
 814 {
 815         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 816             (u_longlong_t)vd->vdev_id,
 817             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 818             "offset", "spacemap", "free");
 819         (void) printf("\t%15s   %19s   %15s   %10s\n",
 820             "---------------", "-------------------",
 821             "---------------", "-------------");
 822 }
 823
 824 static void
 825 dump_metaslab_groups(spa_t *spa)
 826 {
 827         vdev_t *rvd = spa->spa_root_vdev;
 828         metaslab_class_t *mc = spa_normal_class(spa);
 829         uint64_t fragmentation;
 830
 831         metaslab_class_histogram_verify(mc);
 832
 833         for (int c = 0; c < rvd->vdev_children; c++) {
 834                 vdev_t *tvd = rvd->vdev_child[c];
 835                 metaslab_group_t *mg = tvd->vdev_mg;
 836
 837                 if (mg->mg_class != mc)
 838                         continue;
 839
 840                 metaslab_group_histogram_verify(mg);
 841                 mg->mg_fragmentation = metaslab_group_fragmentation(mg);
 842
 843                 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
 844                     "fragmentation",
 845                     (u_longlong_t)tvd->vdev_id,
 846                     (u_longlong_t)tvd->vdev_ms_count);
 847                 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
 848                         (void) printf("%3s\n", "-");
 849                 } else {
 850                         (void) printf("%3llu%%\n",
 851                             (u_longlong_t)mg->mg_fragmentation);
 852                 }
 853                 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 854         }
 855
 856         (void) printf("\tpool %s\tfragmentation", spa_name(spa));
 857         fragmentation = metaslab_class_fragmentation(mc);
 858         if (fragmentation == ZFS_FRAG_INVALID)
 859                 (void) printf("\t%3s\n", "-");
 860         else
 861                 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
 862         dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 863 }
 864
 865 static void
 866 dump_metaslabs(spa_t *spa)
 867 {
 868         vdev_t *vd, *rvd = spa->spa_root_vdev;
 869         uint64_t m, c = 0, children = rvd->vdev_children;
 870
 871         (void) printf("\nMetaslabs:\n");
 872
 873         if (!dump_opt['d'] && zopt_objects > 0) {
 874                 c = zopt_object[0];
 875
 876                 if (c >= children)
 877                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 878
 879                 if (zopt_objects > 1) {
 880                         vd = rvd->vdev_child[c];
 881                         print_vdev_metaslab_header(vd);
 882
 883                         for (m = 1; m < zopt_objects; m++) {
 884                                 if (zopt_object[m] < vd->vdev_ms_count)
 885                                         dump_metaslab(
 886                                             vd->vdev_ms[zopt_object[m]]);
 887                                 else
 888                                         (void) fprintf(stderr, "bad metaslab "
 889                                             "number %llu\n",
 890                                             (u_longlong_t)zopt_object[m]);
 891                         }
 892                         (void) printf("\n");
 893                         return;
 894                 }
 895                 children = c + 1;
 896         }
 897         for (; c < children; c++) {
 898                 vd = rvd->vdev_child[c];
 899                 print_vdev_metaslab_header(vd);
 900
 901                 for (m = 0; m < vd->vdev_ms_count; m++)
 902                         dump_metaslab(vd->vdev_ms[m]);
 903                 (void) printf("\n");
 904         }
 905 }
 906
 907 static void
 908 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 909 {
 910         const ddt_phys_t *ddp = dde->dde_phys;
 911         const ddt_key_t *ddk = &dde->dde_key;
 912         char *types[4] = { "ditto", "single", "double", "triple" };
 913         char blkbuf[BP_SPRINTF_LEN];
 914         blkptr_t blk;
 915
 916         for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 917                 if (ddp->ddp_phys_birth == 0)
 918                         continue;
 919                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 920                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
 921                 (void) printf("index %llx refcnt %llu %s %s\n",
 922                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 923                     types[p], blkbuf);
 924         }
 925 }
 926
 927 static void
 928 dump_dedup_ratio(const ddt_stat_t *dds)
 929 {
 930         double rL, rP, rD, D, dedup, compress, copies;
 931
 932         if (dds->dds_blocks == 0)
 933                 return;
 934
 935         rL = (double)dds->dds_ref_lsize;
 936         rP = (double)dds->dds_ref_psize;
 937         rD = (double)dds->dds_ref_dsize;
 938         D = (double)dds->dds_dsize;
 939
 940         dedup = rD / D;
 941         compress = rL / rP;
 942         copies = rD / rP;
 943
 944         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 945             "dedup * compress / copies = %.2f\n\n",
 946             dedup, compress, copies, dedup * compress / copies);
 947 }
 948
 949 static void
 950 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 951 {
 952         char name[DDT_NAMELEN];
 953         ddt_entry_t dde;
 954         uint64_t walk = 0;
 955         dmu_object_info_t doi;
 956         uint64_t count, dspace, mspace;
 957         int error;
 958
 959         error = ddt_object_info(ddt, type, class, &doi);
 960
 961         if (error == ENOENT)
 962                 return;
 963         ASSERT(error == 0);
 964
 965         error = ddt_object_count(ddt, type, class, &count);
 966         ASSERT(error == 0);
 967         if (count == 0)
 968                 return;
 969
 970         dspace = doi.doi_physical_blocks_512 << 9;
 971         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 972
 973         ddt_object_name(ddt, type, class, name);
 974
 975         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 976             name,
 977             (u_longlong_t)count,
 978             (u_longlong_t)(dspace / count),
 979             (u_longlong_t)(mspace / count));
 980
 981         if (dump_opt['D'] < 3)
 982                 return;
 983
 984         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 985
 986         if (dump_opt['D'] < 4)
 987                 return;
 988
 989         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 990                 return;
 991
 992         (void) printf("%s contents:\n\n", name);
 993
 994         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 995                 dump_dde(ddt, &dde, walk);
 996
 997         ASSERT(error == ENOENT);
 998
 999         (void) printf("\n");
1000 }
1001
1002 static void
1003 dump_all_ddts(spa_t *spa)
1004 {
1005         ddt_histogram_t ddh_total = { 0 };
1006         ddt_stat_t dds_total = { 0 };
1007
1008         for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
1009                 ddt_t *ddt = spa->spa_ddt[c];
1010                 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
1011                         for (enum ddt_class class = 0; class < DDT_CLASSES;
1012                             class++) {
1013                                 dump_ddt(ddt, type, class);
1014                         }
1015                 }
1016         }
1017
1018         ddt_get_dedup_stats(spa, &dds_total);
1019
1020         if (dds_total.dds_blocks == 0) {
1021                 (void) printf("All DDTs are empty\n");
1022                 return;
1023         }
1024
1025         (void) printf("\n");
1026
1027         if (dump_opt['D'] > 1) {
1028                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
1029                 ddt_get_dedup_histogram(spa, &ddh_total);
1030                 zpool_dump_ddt(&dds_total, &ddh_total);
1031         }
1032
1033         dump_dedup_ratio(&dds_total);
1034 }
1035
1036 static void
1037 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
1038 {
1039         char *prefix = arg;
1040
1041         (void) printf("%s [%llu,%llu) length %llu\n",
1042             prefix,
1043             (u_longlong_t)start,
1044             (u_longlong_t)(start + size),
1045             (u_longlong_t)(size));
1046 }
1047
1048 static void
1049 dump_dtl(vdev_t *vd, int indent)
1050 {
1051         spa_t *spa = vd->vdev_spa;
1052         boolean_t required;
1053         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
1054         char prefix[256];
1055
1056         spa_vdev_state_enter(spa, SCL_NONE);
1057         required = vdev_dtl_required(vd);
1058         (void) spa_vdev_state_exit(spa, NULL, 0);
1059
1060         if (indent == 0)
1061                 (void) printf("\nDirty time logs:\n\n");
1062
1063         (void) printf("\t%*s%s [%s]\n", indent, "",
1064             vd->vdev_path ? vd->vdev_path :
1065             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
1066             required ? "DTL-required" : "DTL-expendable");
1067
1068         for (int t = 0; t < DTL_TYPES; t++) {
1069                 range_tree_t *rt = vd->vdev_dtl[t];
1070                 if (range_tree_space(rt) == 0)
1071                         continue;
1072                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
1073                     indent + 2, "", name[t]);
1074                 mutex_enter(rt->rt_lock);
1075                 range_tree_walk(rt, dump_dtl_seg, prefix);
1076                 mutex_exit(rt->rt_lock);
1077                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
1078                         dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
1079         }
1080
1081         for (int c = 0; c < vd->vdev_children; c++)
1082                 dump_dtl(vd->vdev_child[c], indent + 4);
1083 }
1084
1085 /* from spa_history.c: spa_history_create_obj() */
1086 #define HIS_BUF_LEN_DEF (128 << 10)
1087 #define HIS_BUF_LEN_MAX (1 << 30)
1088
1089 static void
1090 dump_history(spa_t *spa)
1091 {
1092         nvlist_t **events = NULL;
1093         char *buf = NULL;
1094         uint64_t bufsize = HIS_BUF_LEN_DEF;
1095         uint64_t resid, len, off = 0;
1096         uint_t num = 0;
1097         int error;
1098         time_t tsec;
1099         struct tm t;
1100         char tbuf[30];
1101         char internalstr[MAXPATHLEN];
1102
1103         if ((buf = malloc(bufsize)) == NULL)
1104                 (void) fprintf(stderr, "Unable to read history: "
1105                     "out of memory\n");
1106         do {
1107                 len = bufsize;
1108
1109                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
1110                         (void) fprintf(stderr, "Unable to read history: "
1111                             "error %d\n", error);
1112                         return;
1113                 }
1114
1115                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1116                         break;
1117                 off -= resid;
1118
1119                 /*
1120                  * If the history block is too big, double the buffer
1121                  * size and try again.
1122                  */
1123                 if (resid == len) {
1124                         free(buf);
1125                         buf = NULL;
1126
1127                         bufsize <<= 1;
1128                         if ((bufsize >= HIS_BUF_LEN_MAX) ||
1129                             ((buf = malloc(bufsize)) == NULL)) {
1130                                 (void) fprintf(stderr, "Unable to read history: "
1131                                     "out of memory\n");
1132                                 return;
1133                         }
1134                 }
1135         } while (len != 0);
1136         free(buf);
1137
1138         (void) printf("\nHistory:\n");
1139         for (int i = 0; i < num; i++) {
1140                 uint64_t time, txg, ievent;
1141                 char *cmd, *intstr;
1142                 boolean_t printed = B_FALSE;
1143
1144                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
1145                     &time) != 0)
1146                         goto next;
1147                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
1148                     &cmd) != 0) {
1149                         if (nvlist_lookup_uint64(events[i],
1150                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1151                                 goto next;
1152                         verify(nvlist_lookup_uint64(events[i],
1153                             ZPOOL_HIST_TXG, &txg) == 0);
1154                         verify(nvlist_lookup_string(events[i],
1155                             ZPOOL_HIST_INT_STR, &intstr) == 0);
1156                         if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1157                                 goto next;
1158
1159                         (void) snprintf(internalstr,
1160                             sizeof (internalstr),
1161                             "[internal %s txg:%lld] %s",
1162                             zfs_history_event_names[ievent], txg,
1163                             intstr);
1164                         cmd = internalstr;
1165                 }
1166                 tsec = time;
1167                 (void) localtime_r(&tsec, &t);
1168                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1169                 (void) printf("%s %s\n", tbuf, cmd);
1170                 printed = B_TRUE;
1171
1172 next:
1173                 if (dump_opt['h'] > 1) {
1174                         if (!printed)
1175                                 (void) printf("unrecognized record:\n");
1176                         dump_nvlist(events[i], 2);
1177                 }
1178         }
1179 }
1180
1181 /*ARGSUSED*/
1182 static void
1183 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1184 {
1185 }
1186
1187 static uint64_t
1188 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1189     const zbookmark_phys_t *zb)
1190 {
1191         if (dnp == NULL) {
1192                 ASSERT(zb->zb_level < 0);
1193                 if (zb->zb_object == 0)
1194                         return (zb->zb_blkid);
1195                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1196         }
1197
1198         ASSERT(zb->zb_level >= 0);
1199
1200         return ((zb->zb_blkid <<
1201             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1202             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1203 }
1204
1205 static void
1206 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1207 {
1208         const dva_t *dva = bp->blk_dva;
1209         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1210
1211         if (dump_opt['b'] >= 6) {
1212                 snprintf_blkptr(blkbuf, buflen, bp);
1213                 return;
1214         }
1215
1216         if (BP_IS_EMBEDDED(bp)) {
1217                 (void) sprintf(blkbuf,
1218                     "EMBEDDED et=%u %llxL/%llxP B=%llu",
1219                     (int)BPE_GET_ETYPE(bp),
1220                     (u_longlong_t)BPE_GET_LSIZE(bp),
1221                     (u_longlong_t)BPE_GET_PSIZE(bp),
1222                     (u_longlong_t)bp->blk_birth);
1223                 return;
1224         }
1225
1226         blkbuf[0] = '\0';
1227         for (int i = 0; i < ndvas; i++)
1228                 (void) snprintf(blkbuf + strlen(blkbuf),
1229                     buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1230                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1231                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1232                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1233
1234         if (BP_IS_HOLE(bp)) {
1235                 (void) snprintf(blkbuf + strlen(blkbuf),
1236                     buflen - strlen(blkbuf),
1237                     "%llxL B=%llu",
1238                     (u_longlong_t)BP_GET_LSIZE(bp),
1239                     (u_longlong_t)bp->blk_birth);
1240         } else {
1241                 (void) snprintf(blkbuf + strlen(blkbuf),
1242                     buflen - strlen(blkbuf),
1243                     "%llxL/%llxP F=%llu B=%llu/%llu",
1244                     (u_longlong_t)BP_GET_LSIZE(bp),
1245                     (u_longlong_t)BP_GET_PSIZE(bp),
1246                     (u_longlong_t)BP_GET_FILL(bp),
1247                     (u_longlong_t)bp->blk_birth,
1248                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1249         }
1250 }
1251
1252 static void
1253 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1254     const dnode_phys_t *dnp)
1255 {
1256         char blkbuf[BP_SPRINTF_LEN];
1257         int l;
1258
1259         if (!BP_IS_EMBEDDED(bp)) {
1260                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1261                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1262         }
1263
1264         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1265
1266         ASSERT(zb->zb_level >= 0);
1267
1268         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1269                 if (l == zb->zb_level) {
1270                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1271                 } else {
1272                         (void) printf(" ");
1273                 }
1274         }
1275
1276         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1277         (void) printf("%s\n", blkbuf);
1278 }
1279
1280 static int
1281 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1282     blkptr_t *bp, const zbookmark_phys_t *zb)
1283 {
1284         int err = 0;
1285
1286         if (bp->blk_birth == 0)
1287                 return (0);
1288
1289         print_indirect(bp, zb, dnp);
1290
1291         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1292                 arc_flags_t flags = ARC_FLAG_WAIT;
1293                 int i;
1294                 blkptr_t *cbp;
1295                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1296                 arc_buf_t *buf;
1297                 uint64_t fill = 0;
1298
1299                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1300                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1301                 if (err)
1302                         return (err);
1303                 ASSERT(buf->b_data);
1304
1305                 /* recursively visit blocks below this */
1306                 cbp = buf->b_data;
1307                 for (i = 0; i < epb; i++, cbp++) {
1308                         zbookmark_phys_t czb;
1309
1310                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1311                             zb->zb_level - 1,
1312                             zb->zb_blkid * epb + i);
1313                         err = visit_indirect(spa, dnp, cbp, &czb);
1314                         if (err)
1315                                 break;
1316                         fill += BP_GET_FILL(cbp);
1317                 }
1318                 if (!err)
1319                         ASSERT3U(fill, ==, BP_GET_FILL(bp));
1320                 arc_buf_destroy(buf, &buf);
1321         }
1322
1323         return (err);
1324 }
1325
1326 /*ARGSUSED*/
1327 static void
1328 dump_indirect(dnode_t *dn)
1329 {
1330         dnode_phys_t *dnp = dn->dn_phys;
1331         int j;
1332         zbookmark_phys_t czb;
1333
1334         (void) printf("Indirect blocks:\n");
1335
1336         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1337             dn->dn_object, dnp->dn_nlevels - 1, 0);
1338         for (j = 0; j < dnp->dn_nblkptr; j++) {
1339                 czb.zb_blkid = j;
1340                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1341                     &dnp->dn_blkptr[j], &czb);
1342         }
1343
1344         (void) printf("\n");
1345 }
1346
1347 /*ARGSUSED*/
1348 static void
1349 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1350 {
1351         dsl_dir_phys_t *dd = data;
1352         time_t crtime;
1353         char nice[32];
1354
1355         if (dd == NULL)
1356                 return;
1357
1358         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1359
1360         crtime = dd->dd_creation_time;
1361         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1362         (void) printf("\t\thead_dataset_obj = %llu\n",
1363             (u_longlong_t)dd->dd_head_dataset_obj);
1364         (void) printf("\t\tparent_dir_obj = %llu\n",
1365             (u_longlong_t)dd->dd_parent_obj);
1366         (void) printf("\t\torigin_obj = %llu\n",
1367             (u_longlong_t)dd->dd_origin_obj);
1368         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1369             (u_longlong_t)dd->dd_child_dir_zapobj);
1370         zdb_nicenum(dd->dd_used_bytes, nice);
1371         (void) printf("\t\tused_bytes = %s\n", nice);
1372         zdb_nicenum(dd->dd_compressed_bytes, nice);
1373         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1374         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1375         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1376         zdb_nicenum(dd->dd_quota, nice);
1377         (void) printf("\t\tquota = %s\n", nice);
1378         zdb_nicenum(dd->dd_reserved, nice);
1379         (void) printf("\t\treserved = %s\n", nice);
1380         (void) printf("\t\tprops_zapobj = %llu\n",
1381             (u_longlong_t)dd->dd_props_zapobj);
1382         (void) printf("\t\tdeleg_zapobj = %llu\n",
1383             (u_longlong_t)dd->dd_deleg_zapobj);
1384         (void) printf("\t\tflags = %llx\n",
1385             (u_longlong_t)dd->dd_flags);
1386
1387 #define DO(which) \
1388         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1389         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1390         DO(HEAD);
1391         DO(SNAP);
1392         DO(CHILD);
1393         DO(CHILD_RSRV);
1394         DO(REFRSRV);
1395 #undef DO
1396 }
1397
1398 /*ARGSUSED*/
1399 static void
1400 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1401 {
1402         dsl_dataset_phys_t *ds = data;
1403         time_t crtime;
1404         char used[32], compressed[32], uncompressed[32], unique[32];
1405         char blkbuf[BP_SPRINTF_LEN];
1406
1407         if (ds == NULL)
1408                 return;
1409
1410         ASSERT(size == sizeof (*ds));
1411         crtime = ds->ds_creation_time;
1412         zdb_nicenum(ds->ds_referenced_bytes, used);
1413         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1414         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1415         zdb_nicenum(ds->ds_unique_bytes, unique);
1416         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1417
1418         (void) printf("\t\tdir_obj = %llu\n",
1419             (u_longlong_t)ds->ds_dir_obj);
1420         (void) printf("\t\tprev_snap_obj = %llu\n",
1421             (u_longlong_t)ds->ds_prev_snap_obj);
1422         (void) printf("\t\tprev_snap_txg = %llu\n",
1423             (u_longlong_t)ds->ds_prev_snap_txg);
1424         (void) printf("\t\tnext_snap_obj = %llu\n",
1425             (u_longlong_t)ds->ds_next_snap_obj);
1426         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1427             (u_longlong_t)ds->ds_snapnames_zapobj);
1428         (void) printf("\t\tnum_children = %llu\n",
1429             (u_longlong_t)ds->ds_num_children);
1430         (void) printf("\t\tuserrefs_obj = %llu\n",
1431             (u_longlong_t)ds->ds_userrefs_obj);
1432         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1433         (void) printf("\t\tcreation_txg = %llu\n",
1434             (u_longlong_t)ds->ds_creation_txg);
1435         (void) printf("\t\tdeadlist_obj = %llu\n",
1436             (u_longlong_t)ds->ds_deadlist_obj);
1437         (void) printf("\t\tused_bytes = %s\n", used);
1438         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1439         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1440         (void) printf("\t\tunique = %s\n", unique);
1441         (void) printf("\t\tfsid_guid = %llu\n",
1442             (u_longlong_t)ds->ds_fsid_guid);
1443         (void) printf("\t\tguid = %llu\n",
1444             (u_longlong_t)ds->ds_guid);
1445         (void) printf("\t\tflags = %llx\n",
1446             (u_longlong_t)ds->ds_flags);
1447         (void) printf("\t\tnext_clones_obj = %llu\n",
1448             (u_longlong_t)ds->ds_next_clones_obj);
1449         (void) printf("\t\tprops_obj = %llu\n",
1450             (u_longlong_t)ds->ds_props_obj);
1451         (void) printf("\t\tbp = %s\n", blkbuf);
1452 }
1453
1454 /* ARGSUSED */
1455 static int
1456 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1457 {
1458         char blkbuf[BP_SPRINTF_LEN];
1459
1460         if (bp->blk_birth != 0) {
1461                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1462                 (void) printf("\t%s\n", blkbuf);
1463         }
1464         return (0);
1465 }
1466
1467 static void
1468 dump_bptree(objset_t *os, uint64_t obj, char *name)
1469 {
1470         char bytes[32];
1471         bptree_phys_t *bt;
1472         dmu_buf_t *db;
1473
1474         if (dump_opt['d'] < 3)
1475                 return;
1476
1477         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1478         bt = db->db_data;
1479         zdb_nicenum(bt->bt_bytes, bytes);
1480         (void) printf("\n    %s: %llu datasets, %s\n",
1481             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1482         dmu_buf_rele(db, FTAG);
1483
1484         if (dump_opt['d'] < 5)
1485                 return;
1486
1487         (void) printf("\n");
1488
1489         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1490 }
1491
1492 /* ARGSUSED */
1493 static int
1494 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1495 {
1496         char blkbuf[BP_SPRINTF_LEN];
1497
1498         ASSERT(bp->blk_birth != 0);
1499         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1500         (void) printf("\t%s\n", blkbuf);
1501         return (0);
1502 }
1503
1504 static void
1505 dump_full_bpobj(bpobj_t *bpo, char *name, int indent)
1506 {
1507         char bytes[32];
1508         char comp[32];
1509         char uncomp[32];
1510
1511         if (dump_opt['d'] < 3)
1512                 return;
1513
1514         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1515         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1516                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1517                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1518                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1519                     "%llu subobjs in object %llu, %s (%s/%s comp)\n",
1520                     indent * 8, name,
1521                     (u_longlong_t)bpo->bpo_object,
1522                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1523                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1524                     (u_longlong_t)bpo->bpo_phys->bpo_subobjs,
1525                     bytes, comp, uncomp);
1526
1527                 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1528                         uint64_t subobj;
1529                         bpobj_t subbpo;
1530                         int error;
1531                         VERIFY0(dmu_read(bpo->bpo_os,
1532                             bpo->bpo_phys->bpo_subobjs,
1533                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1534                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1535                         if (error != 0) {
1536                                 (void) printf("ERROR %u while trying to open "
1537                                     "subobj id %llu\n",
1538                                     error, (u_longlong_t)subobj);
1539                                 continue;
1540                         }
1541                         dump_full_bpobj(&subbpo, "subobj", indent + 1);
1542                         bpobj_close(&subbpo);
1543                 }
1544         } else {
1545                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1546                     indent * 8, name,
1547                     (u_longlong_t)bpo->bpo_object,
1548                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1549                     bytes);
1550         }
1551
1552         if (dump_opt['d'] < 5)
1553                 return;
1554
1555
1556         if (indent == 0) {
1557                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1558                 (void) printf("\n");
1559         }
1560 }
1561
1562 static void
1563 dump_deadlist(dsl_deadlist_t *dl)
1564 {
1565         dsl_deadlist_entry_t *dle;
1566         uint64_t unused;
1567         char bytes[32];
1568         char comp[32];
1569         char uncomp[32];
1570
1571         if (dump_opt['d'] < 3)
1572                 return;
1573
1574         if (dl->dl_oldfmt) {
1575                 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1576                 return;
1577         }
1578
1579         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1580         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1581         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1582         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1583             bytes, comp, uncomp);
1584
1585         if (dump_opt['d'] < 4)
1586                 return;
1587
1588         (void) printf("\n");
1589
1590         /* force the tree to be loaded */
1591         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1592
1593         for (dle = avl_first(&dl->dl_tree); dle;
1594             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1595                 if (dump_opt['d'] >= 5) {
1596                         char buf[128];
1597                         (void) snprintf(buf, sizeof (buf),
1598                             "mintxg %llu -> obj %llu",
1599                             (longlong_t)dle->dle_mintxg,
1600                             (longlong_t)dle->dle_bpobj.bpo_object);
1601                         dump_full_bpobj(&dle->dle_bpobj, buf, 0);
1602                 } else {
1603                         (void) printf("mintxg %llu -> obj %llu\n",
1604                             (longlong_t)dle->dle_mintxg,
1605                             (longlong_t)dle->dle_bpobj.bpo_object);
1606                 }
1607         }
1608 }
1609
1610 static avl_tree_t idx_tree;
1611 static avl_tree_t domain_tree;
1612 static boolean_t fuid_table_loaded;
1613 static objset_t *sa_os = NULL;
1614 static sa_attr_type_t *sa_attr_table = NULL;
1615
1616 static int
1617 open_objset(const char *path, dmu_objset_type_t type, void *tag, objset_t **osp)
1618 {
1619         int err;
1620         uint64_t sa_attrs = 0;
1621         uint64_t version = 0;
1622
1623         VERIFY3P(sa_os, ==, NULL);
1624         err = dmu_objset_own(path, type, B_TRUE, tag, osp);
1625         if (err != 0) {
1626                 (void) fprintf(stderr, "failed to own dataset '%s': %s\n", path,
1627                     strerror(err));
1628                 return (err);
1629         }
1630
1631         if (dmu_objset_type(*osp) == DMU_OST_ZFS) {
1632                 (void) zap_lookup(*osp, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1633                     8, 1, &version);
1634                 if (version >= ZPL_VERSION_SA) {
1635                         (void) zap_lookup(*osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1636                             8, 1, &sa_attrs);
1637                 }
1638                 err = sa_setup(*osp, sa_attrs, zfs_attr_table, ZPL_END,
1639                     &sa_attr_table);
1640                 if (err != 0) {
1641                         (void) fprintf(stderr, "sa_setup failed: %s\n",
1642                             strerror(err));
1643                         dmu_objset_disown(*osp, tag);
1644                         *osp = NULL;
1645                 }
1646         }
1647         sa_os = *osp;
1648
1649         return (0);
1650 }
1651
1652 static void
1653 close_objset(objset_t *os, void *tag)
1654 {
1655         VERIFY3P(os, ==, sa_os);
1656         if (os->os_sa != NULL)
1657                 sa_tear_down(os);
1658         dmu_objset_disown(os, tag);
1659         sa_attr_table = NULL;
1660         sa_os = NULL;
1661 }
1662
1663 static void
1664 fuid_table_destroy()
1665 {
1666         if (fuid_table_loaded) {
1667                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1668                 fuid_table_loaded = B_FALSE;
1669         }
1670 }
1671
1672 /*
1673  * print uid or gid information.
1674  * For normal POSIX id just the id is printed in decimal format.
1675  * For CIFS files with FUID the fuid is printed in hex followed by
1676  * the domain-rid string.
1677  */
1678 static void
1679 print_idstr(uint64_t id, const char *id_type)
1680 {
1681         if (FUID_INDEX(id)) {
1682                 char *domain;
1683
1684                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1685                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1686                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1687         } else {
1688                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1689         }
1690
1691 }
1692
1693 static void
1694 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1695 {
1696         uint32_t uid_idx, gid_idx;
1697
1698         uid_idx = FUID_INDEX(uid);
1699         gid_idx = FUID_INDEX(gid);
1700
1701         /* Load domain table, if not already loaded */
1702         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1703                 uint64_t fuid_obj;
1704
1705                 /* first find the fuid object.  It lives in the master node */
1706                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1707                     8, 1, &fuid_obj) == 0);
1708                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1709                 (void) zfs_fuid_table_load(os, fuid_obj,
1710                     &idx_tree, &domain_tree);
1711                 fuid_table_loaded = B_TRUE;
1712         }
1713
1714         print_idstr(uid, "uid");
1715         print_idstr(gid, "gid");
1716 }
1717
1718 /*ARGSUSED*/
1719 static void
1720 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1721 {
1722         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1723         sa_handle_t *hdl;
1724         uint64_t xattr, rdev, gen;
1725         uint64_t uid, gid, mode, fsize, parent, links;
1726         uint64_t pflags;
1727         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1728         time_t z_crtime, z_atime, z_mtime, z_ctime;
1729         sa_bulk_attr_t bulk[12];
1730         int idx = 0;
1731         int error;
1732
1733         VERIFY3P(os, ==, sa_os);
1734         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1735                 (void) printf("Failed to get handle for SA znode\n");
1736                 return;
1737         }
1738
1739         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1740         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1741         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1742             &links, 8);
1743         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1744         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1745             &mode, 8);
1746         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1747             NULL, &parent, 8);
1748         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1749             &fsize, 8);
1750         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1751             acctm, 16);
1752         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1753             modtm, 16);
1754         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1755             crtm, 16);
1756         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1757             chgtm, 16);
1758         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1759             &pflags, 8);
1760
1761         if (sa_bulk_lookup(hdl, bulk, idx)) {
1762                 (void) sa_handle_destroy(hdl);
1763                 return;
1764         }
1765
1766         z_crtime = (time_t)crtm[0];
1767         z_atime = (time_t)acctm[0];
1768         z_mtime = (time_t)modtm[0];
1769         z_ctime = (time_t)chgtm[0];
1770
1771         if (dump_opt['d'] > 4) {
1772                 error = zfs_obj_to_path(os, object, path, sizeof (path));
1773                 if (error != 0) {
1774                         (void) snprintf(path, sizeof (path),
1775                             "\?\?\?<object#%llu>", (u_longlong_t)object);
1776                 }
1777                 (void) printf("\tpath   %s\n", path);
1778         }
1779         dump_uidgid(os, uid, gid);
1780         (void) printf("\tatime  %s", ctime(&z_atime));
1781         (void) printf("\tmtime  %s", ctime(&z_mtime));
1782         (void) printf("\tctime  %s", ctime(&z_ctime));
1783         (void) printf("\tcrtime %s", ctime(&z_crtime));
1784         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1785         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1786         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1787         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1788         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1789         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1790         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1791             sizeof (uint64_t)) == 0)
1792                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1793         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1794             sizeof (uint64_t)) == 0)
1795                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1796         sa_handle_destroy(hdl);
1797 }
1798
1799 /*ARGSUSED*/
1800 static void
1801 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1802 {
1803 }
1804
1805 /*ARGSUSED*/
1806 static void
1807 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1808 {
1809 }
1810
1811 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1812         dump_none,              /* unallocated                  */
1813         dump_zap,               /* object directory             */
1814         dump_uint64,            /* object array                 */
1815         dump_none,              /* packed nvlist                */
1816         dump_packed_nvlist,     /* packed nvlist size           */
1817         dump_none,              /* bpobj                        */
1818         dump_bpobj,             /* bpobj header                 */
1819         dump_none,              /* SPA space map header         */
1820         dump_none,              /* SPA space map                */
1821         dump_none,              /* ZIL intent log               */
1822         dump_dnode,             /* DMU dnode                    */
1823         dump_dmu_objset,        /* DMU objset                   */
1824         dump_dsl_dir,           /* DSL directory                */
1825         dump_zap,               /* DSL directory child map      */
1826         dump_zap,               /* DSL dataset snap map         */
1827         dump_zap,               /* DSL props                    */
1828         dump_dsl_dataset,       /* DSL dataset                  */
1829         dump_znode,             /* ZFS znode                    */
1830         dump_acl,               /* ZFS V0 ACL                   */
1831         dump_uint8,             /* ZFS plain file               */
1832         dump_zpldir,            /* ZFS directory                */
1833         dump_zap,               /* ZFS master node              */
1834         dump_zap,               /* ZFS delete queue             */
1835         dump_uint8,             /* zvol object                  */
1836         dump_zap,               /* zvol prop                    */
1837         dump_uint8,             /* other uint8[]                */
1838         dump_uint64,            /* other uint64[]               */
1839         dump_zap,               /* other ZAP                    */
1840         dump_zap,               /* persistent error log         */
1841         dump_uint8,             /* SPA history                  */
1842         dump_history_offsets,   /* SPA history offsets          */
1843         dump_zap,               /* Pool properties              */
1844         dump_zap,               /* DSL permissions              */
1845         dump_acl,               /* ZFS ACL                      */
1846         dump_uint8,             /* ZFS SYSACL                   */
1847         dump_none,              /* FUID nvlist                  */
1848         dump_packed_nvlist,     /* FUID nvlist size             */
1849         dump_zap,               /* DSL dataset next clones      */
1850         dump_zap,               /* DSL scrub queue              */
1851         dump_zap,               /* ZFS user/group used          */
1852         dump_zap,               /* ZFS user/group quota         */
1853         dump_zap,               /* snapshot refcount tags       */
1854         dump_ddt_zap,           /* DDT ZAP object               */
1855         dump_zap,               /* DDT statistics               */
1856         dump_znode,             /* SA object                    */
1857         dump_zap,               /* SA Master Node               */
1858         dump_sa_attrs,          /* SA attribute registration    */
1859         dump_sa_layouts,        /* SA attribute layouts         */
1860         dump_zap,               /* DSL scrub translations       */
1861         dump_none,              /* fake dedup BP                */
1862         dump_zap,               /* deadlist                     */
1863         dump_none,              /* deadlist hdr                 */
1864         dump_zap,               /* dsl clones                   */
1865         dump_bpobj_subobjs,     /* bpobj subobjs                */
1866         dump_unknown,           /* Unknown type, must be last   */
1867 };
1868
1869 static void
1870 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1871 {
1872         dmu_buf_t *db = NULL;
1873         dmu_object_info_t doi;
1874         dnode_t *dn;
1875         void *bonus = NULL;
1876         size_t bsize = 0;
1877         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1878         char bonus_size[32];
1879         char aux[50];
1880         int error;
1881
1882         if (*print_header) {
1883                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1884                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1885                     "%full", "type");
1886                 *print_header = 0;
1887         }
1888
1889         if (object == 0) {
1890                 dn = DMU_META_DNODE(os);
1891         } else {
1892                 error = dmu_bonus_hold(os, object, FTAG, &db);
1893                 if (error)
1894                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1895                             object, error);
1896                 bonus = db->db_data;
1897                 bsize = db->db_size;
1898                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1899         }
1900         dmu_object_info_from_dnode(dn, &doi);
1901
1902         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1903         zdb_nicenum(doi.doi_data_block_size, dblk);
1904         zdb_nicenum(doi.doi_max_offset, lsize);
1905         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1906         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1907         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1908             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1909             doi.doi_max_offset);
1910
1911         aux[0] = '\0';
1912
1913         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1914                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1915                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1916         }
1917
1918         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1919                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1920                     ZDB_COMPRESS_NAME(doi.doi_compress));
1921         }
1922
1923         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1924             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1925             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1926
1927         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1928                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1929                     "", "", "", "", "", bonus_size, "bonus",
1930                     ZDB_OT_NAME(doi.doi_bonus_type));
1931         }
1932
1933         if (verbosity >= 4) {
1934                 (void) printf("\tdnode flags: %s%s%s\n",
1935                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1936                     "USED_BYTES " : "",
1937                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1938                     "USERUSED_ACCOUNTED " : "",
1939                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1940                     "SPILL_BLKPTR" : "");
1941                 (void) printf("\tdnode maxblkid: %llu\n",
1942                     (longlong_t)dn->dn_phys->dn_maxblkid);
1943
1944                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1945                     bonus, bsize);
1946                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1947                 *print_header = 1;
1948         }
1949
1950         if (verbosity >= 5)
1951                 dump_indirect(dn);
1952
1953         if (verbosity >= 5) {
1954                 /*
1955                  * Report the list of segments that comprise the object.
1956                  */
1957                 uint64_t start = 0;
1958                 uint64_t end;
1959                 uint64_t blkfill = 1;
1960                 int minlvl = 1;
1961
1962                 if (dn->dn_type == DMU_OT_DNODE) {
1963                         minlvl = 0;
1964                         blkfill = DNODES_PER_BLOCK;
1965                 }
1966
1967                 for (;;) {
1968                         char segsize[32];
1969                         error = dnode_next_offset(dn,
1970                             0, &start, minlvl, blkfill, 0);
1971                         if (error)
1972                                 break;
1973                         end = start;
1974                         error = dnode_next_offset(dn,
1975                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1976                         zdb_nicenum(end - start, segsize);
1977                         (void) printf("\t\tsegment [%016llx, %016llx)"
1978                             " size %5s\n", (u_longlong_t)start,
1979                             (u_longlong_t)end, segsize);
1980                         if (error)
1981                                 break;
1982                         start = end;
1983                 }
1984         }
1985
1986         if (db != NULL)
1987                 dmu_buf_rele(db, FTAG);
1988 }
1989
1990 static char *objset_types[DMU_OST_NUMTYPES] = {
1991         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1992
1993 static void
1994 dump_dir(objset_t *os)
1995 {
1996         dmu_objset_stats_t dds;
1997         uint64_t object, object_count;
1998         uint64_t refdbytes, usedobjs, scratch;
1999         char numbuf[32];
2000         char blkbuf[BP_SPRINTF_LEN + 20];
2001         char osname[ZFS_MAX_DATASET_NAME_LEN];
2002         char *type = "UNKNOWN";
2003         int verbosity = dump_opt['d'];
2004         int print_header = 1;
2005         int i, error;
2006
2007         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
2008         dmu_objset_fast_stat(os, &dds);
2009         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
2010
2011         if (dds.dds_type < DMU_OST_NUMTYPES)
2012                 type = objset_types[dds.dds_type];
2013
2014         if (dds.dds_type == DMU_OST_META) {
2015                 dds.dds_creation_txg = TXG_INITIAL;
2016                 usedobjs = BP_GET_FILL(os->os_rootbp);
2017                 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
2018                     dd_used_bytes;
2019         } else {
2020                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
2021         }
2022
2023         ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
2024
2025         zdb_nicenum(refdbytes, numbuf);
2026
2027         if (verbosity >= 4) {
2028                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
2029                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
2030                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
2031         } else {
2032                 blkbuf[0] = '\0';
2033         }
2034
2035         dmu_objset_name(os, osname);
2036
2037         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
2038             "%s, %llu objects%s\n",
2039             osname, type, (u_longlong_t)dmu_objset_id(os),
2040             (u_longlong_t)dds.dds_creation_txg,
2041             numbuf, (u_longlong_t)usedobjs, blkbuf);
2042
2043         if (zopt_objects != 0) {
2044                 for (i = 0; i < zopt_objects; i++)
2045                         dump_object(os, zopt_object[i], verbosity,
2046                             &print_header);
2047                 (void) printf("\n");
2048                 return;
2049         }
2050
2051         if (dump_opt['i'] != 0 || verbosity >= 2)
2052                 dump_intent_log(dmu_objset_zil(os));
2053
2054         if (dmu_objset_ds(os) != NULL)
2055                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
2056
2057         if (verbosity < 2)
2058                 return;
2059
2060         if (BP_IS_HOLE(os->os_rootbp))
2061                 return;
2062
2063         dump_object(os, 0, verbosity, &print_header);
2064         object_count = 0;
2065         if (DMU_USERUSED_DNODE(os) != NULL &&
2066             DMU_USERUSED_DNODE(os)->dn_type != 0) {
2067                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
2068                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
2069         }
2070
2071         object = 0;
2072         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
2073                 dump_object(os, object, verbosity, &print_header);
2074                 object_count++;
2075         }
2076
2077         ASSERT3U(object_count, ==, usedobjs);
2078
2079         (void) printf("\n");
2080
2081         if (error != ESRCH) {
2082                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
2083                 abort();
2084         }
2085 }
2086
2087 static void
2088 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
2089 {
2090         time_t timestamp = ub->ub_timestamp;
2091
2092         (void) printf(header ? header : "");
2093         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
2094         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
2095         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
2096         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
2097         (void) printf("\ttimestamp = %llu UTC = %s",
2098             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
2099         if (dump_opt['u'] >= 3) {
2100                 char blkbuf[BP_SPRINTF_LEN];
2101                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
2102                 (void) printf("\trootbp = %s\n", blkbuf);
2103         }
2104         (void) printf(footer ? footer : "");
2105 }
2106
2107 static void
2108 dump_config(spa_t *spa)
2109 {
2110         dmu_buf_t *db;
2111         size_t nvsize = 0;
2112         int error = 0;
2113
2114
2115         error = dmu_bonus_hold(spa->spa_meta_objset,
2116             spa->spa_config_object, FTAG, &db);
2117
2118         if (error == 0) {
2119                 nvsize = *(uint64_t *)db->db_data;
2120                 dmu_buf_rele(db, FTAG);
2121
2122                 (void) printf("\nMOS Configuration:\n");
2123                 dump_packed_nvlist(spa->spa_meta_objset,
2124                     spa->spa_config_object, (void *)&nvsize, 1);
2125         } else {
2126                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
2127                     (u_longlong_t)spa->spa_config_object, error);
2128         }
2129 }
2130
2131 static void
2132 dump_cachefile(const char *cachefile)
2133 {
2134         int fd;
2135         struct stat64 statbuf;
2136         char *buf;
2137         nvlist_t *config;
2138
2139         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
2140                 (void) fprintf(stderr, "cannot open '%s': %s\n", cachefile,
2141                     strerror(errno));
2142                 exit(1);
2143         }
2144
2145         if (fstat64(fd, &statbuf) != 0) {
2146                 (void) fprintf(stderr, "failed to stat '%s': %s\n", cachefile,
2147                     strerror(errno));
2148                 exit(1);
2149         }
2150
2151         if ((buf = malloc(statbuf.st_size)) == NULL) {
2152                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
2153                     (u_longlong_t)statbuf.st_size);
2154                 exit(1);
2155         }
2156
2157         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2158                 (void) fprintf(stderr, "failed to read %llu bytes\n",
2159                     (u_longlong_t)statbuf.st_size);
2160                 exit(1);
2161         }
2162
2163         (void) close(fd);
2164
2165         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2166                 (void) fprintf(stderr, "failed to unpack nvlist\n");
2167                 exit(1);
2168         }
2169
2170         free(buf);
2171
2172         dump_nvlist(config, 0);
2173
2174         nvlist_free(config);
2175 }
2176
2177 #define ZDB_MAX_UB_HEADER_SIZE 32
2178
2179 static void
2180 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
2181 {
2182         vdev_t vd;
2183         vdev_t *vdp = &vd;
2184         char header[ZDB_MAX_UB_HEADER_SIZE];
2185
2186         vd.vdev_ashift = ashift;
2187         vdp->vdev_top = vdp;
2188
2189         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2190                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2191                 uberblock_t *ub = (void *)((char *)lbl + uoff);
2192
2193                 if (uberblock_verify(ub))
2194                         continue;
2195                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2196                     "Uberblock[%d]\n", i);
2197                 dump_uberblock(ub, header, "");
2198         }
2199 }
2200
2201 static char curpath[PATH_MAX];
2202
2203 /*
2204  * Iterate through the path components, recursively passing
2205  * current one's obj and remaining path until we find the obj
2206  * for the last one.
2207  */
2208 static int
2209 dump_path_impl(objset_t *os, uint64_t obj, char *name)
2210 {
2211         int err;
2212         int header = 1;
2213         uint64_t child_obj;
2214         char *s;
2215         dmu_buf_t *db;
2216         dmu_object_info_t doi;
2217
2218         if ((s = strchr(name, '/')) != NULL)
2219                 *s = '\0';
2220         err = zap_lookup(os, obj, name, 8, 1, &child_obj);
2221
2222         (void) strlcat(curpath, name, sizeof (curpath));
2223
2224         if (err != 0) {
2225                 (void) fprintf(stderr, "failed to lookup %s: %s\n",
2226                     curpath, strerror(err));
2227                 return (err);
2228         }
2229
2230         child_obj = ZFS_DIRENT_OBJ(child_obj);
2231         err = sa_buf_hold(os, child_obj, FTAG, &db);
2232         if (err != 0) {
2233                 (void) fprintf(stderr,
2234                     "failed to get SA dbuf for obj %llu: %s\n",
2235                     (u_longlong_t)child_obj, strerror(err));
2236                 return (EINVAL);
2237         }
2238         dmu_object_info_from_db(db, &doi);
2239         sa_buf_rele(db, FTAG);
2240
2241         if (doi.doi_bonus_type != DMU_OT_SA &&
2242             doi.doi_bonus_type != DMU_OT_ZNODE) {
2243                 (void) fprintf(stderr, "invalid bonus type %d for obj %llu\n",
2244                     doi.doi_bonus_type, (u_longlong_t)child_obj);
2245                 return (EINVAL);
2246         }
2247
2248         if (dump_opt['v'] > 6) {
2249                 (void) printf("obj=%llu %s type=%d bonustype=%d\n",
2250                     (u_longlong_t)child_obj, curpath, doi.doi_type,
2251                     doi.doi_bonus_type);
2252         }
2253
2254         (void) strlcat(curpath, "/", sizeof (curpath));
2255
2256         switch (doi.doi_type) {
2257         case DMU_OT_DIRECTORY_CONTENTS:
2258                 if (s != NULL && *(s + 1) != '\0')
2259                         return (dump_path_impl(os, child_obj, s + 1));
2260                 /*FALLTHROUGH*/
2261         case DMU_OT_PLAIN_FILE_CONTENTS:
2262                 dump_object(os, child_obj, dump_opt['v'], &header);
2263                 return (0);
2264         default:
2265                 (void) fprintf(stderr, "object %llu has non-file/directory "
2266                     "type %d\n", (u_longlong_t)obj, doi.doi_type);
2267                 break;
2268         }
2269
2270         return (EINVAL);
2271 }
2272
2273 /*
2274  * Dump the blocks for the object specified by path inside the dataset.
2275  */
2276 static int
2277 dump_path(char *ds, char *path)
2278 {
2279         int err;
2280         objset_t *os;
2281         uint64_t root_obj;
2282
2283         err = open_objset(ds, DMU_OST_ZFS, FTAG, &os);
2284         if (err != 0)
2285                 return (err);
2286
2287         err = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1, &root_obj);
2288         if (err != 0) {
2289                 (void) fprintf(stderr, "can't lookup root znode: %s\n",
2290                     strerror(err));
2291                 dmu_objset_disown(os, FTAG);
2292                 return (EINVAL);
2293         }
2294
2295         (void) snprintf(curpath, sizeof (curpath), "dataset=%s path=/", ds);
2296
2297         err = dump_path_impl(os, root_obj, path);
2298
2299         close_objset(os, FTAG);
2300         return (err);
2301 }
2302
2303 static int
2304 dump_label(const char *dev)
2305 {
2306         int fd;
2307         vdev_label_t label;
2308         char path[MAXPATHLEN];
2309         char *buf = label.vl_vdev_phys.vp_nvlist;
2310         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2311         struct stat64 statbuf;
2312         uint64_t psize, ashift;
2313         boolean_t label_found = B_FALSE;
2314
2315         (void) strlcpy(path, dev, sizeof (path));
2316         if (dev[0] == '/') {
2317                 if (strncmp(dev, ZFS_DISK_ROOTD,
2318                     strlen(ZFS_DISK_ROOTD)) == 0) {
2319                         (void) snprintf(path, sizeof (path), "%s%s",
2320                             ZFS_RDISK_ROOTD, dev + strlen(ZFS_DISK_ROOTD));
2321                 }
2322         } else if (stat64(path, &statbuf) != 0) {
2323                 char *s;
2324
2325                 (void) snprintf(path, sizeof (path), "%s%s", ZFS_RDISK_ROOTD,
2326                     dev);
2327                 if (((s = strrchr(dev, 's')) == NULL &&
2328                     (s = strchr(dev, 'p')) == NULL) ||
2329                     !isdigit(*(s + 1)))
2330                         (void) strlcat(path, "s0", sizeof (path));
2331         }
2332
2333         if ((fd = open64(path, O_RDONLY)) < 0) {
2334                 (void) fprintf(stderr, "cannot open '%s': %s\n", path,
2335                     strerror(errno));
2336                 exit(1);
2337         }
2338
2339         if (fstat64(fd, &statbuf) != 0) {
2340                 (void) fprintf(stderr, "failed to stat '%s': %s\n", path,
2341                     strerror(errno));
2342                 (void) close(fd);
2343                 exit(1);
2344         }
2345
2346         if (S_ISBLK(statbuf.st_mode)) {
2347                 (void) fprintf(stderr,
2348                     "cannot use '%s': character device required\n", path);
2349                 (void) close(fd);
2350                 exit(1);
2351         }
2352
2353         psize = statbuf.st_size;
2354         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2355
2356         for (int l = 0; l < VDEV_LABELS; l++) {
2357                 nvlist_t *config = NULL;
2358
2359                 if (!dump_opt['q']) {
2360                         (void) printf("------------------------------------\n");
2361                         (void) printf("LABEL %d\n", l);
2362                         (void) printf("------------------------------------\n");
2363                 }
2364
2365                 if (pread64(fd, &label, sizeof (label),
2366                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2367                         if (!dump_opt['q'])
2368                                 (void) printf("failed to read label %d\n", l);
2369                         continue;
2370                 }
2371
2372                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2373                         if (!dump_opt['q'])
2374                                 (void) printf("failed to unpack label %d\n", l);
2375                         ashift = SPA_MINBLOCKSHIFT;
2376                 } else {
2377                         nvlist_t *vdev_tree = NULL;
2378
2379                         if (!dump_opt['q'])
2380                                 dump_nvlist(config, 4);
2381                         if ((nvlist_lookup_nvlist(config,
2382                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2383                             (nvlist_lookup_uint64(vdev_tree,
2384                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2385                                 ashift = SPA_MINBLOCKSHIFT;
2386                         nvlist_free(config);
2387                         label_found = B_TRUE;
2388                 }
2389                 if (dump_opt['u'])
2390                         dump_label_uberblocks(&label, ashift);
2391         }
2392
2393         (void) close(fd);
2394
2395         return (label_found ? 0 : 2);
2396 }
2397
2398 static uint64_t dataset_feature_count[SPA_FEATURES];
2399
2400 /*ARGSUSED*/
2401 static int
2402 dump_one_dir(const char *dsname, void *arg)
2403 {
2404         int error;
2405         objset_t *os;
2406
2407         error = open_objset(dsname, DMU_OST_ANY, FTAG, &os);
2408         if (error != 0)
2409                 return (0);
2410
2411         for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
2412                 if (!dmu_objset_ds(os)->ds_feature_inuse[f])
2413                         continue;
2414                 ASSERT(spa_feature_table[f].fi_flags &
2415                     ZFEATURE_FLAG_PER_DATASET);
2416                 dataset_feature_count[f]++;
2417         }
2418
2419         dump_dir(os);
2420         close_objset(os, FTAG);
2421         fuid_table_destroy();
2422         return (0);
2423 }
2424
2425 /*
2426  * Block statistics.
2427  */
2428 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2429 typedef struct zdb_blkstats {
2430         uint64_t zb_asize;
2431         uint64_t zb_lsize;
2432         uint64_t zb_psize;
2433         uint64_t zb_count;
2434         uint64_t zb_gangs;
2435         uint64_t zb_ditto_samevdev;
2436         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2437 } zdb_blkstats_t;
2438
2439 /*
2440  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2441  */
2442 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2443 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2444 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2445 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2446
2447 static char *zdb_ot_extname[] = {
2448         "deferred free",
2449         "dedup ditto",
2450         "other",
2451         "Total",
2452 };
2453
2454 #define ZB_TOTAL        DN_MAX_LEVELS
2455
2456 typedef struct zdb_cb {
2457         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2458         uint64_t        zcb_dedup_asize;
2459         uint64_t        zcb_dedup_blocks;
2460         uint64_t        zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2461         uint64_t        zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2462             [BPE_PAYLOAD_SIZE];
2463         uint64_t        zcb_start;
2464         uint64_t        zcb_lastprint;
2465         uint64_t        zcb_totalasize;
2466         uint64_t        zcb_errors[256];
2467         int             zcb_readfails;
2468         int             zcb_haderrors;
2469         spa_t           *zcb_spa;
2470 } zdb_cb_t;
2471
2472 static void
2473 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2474     dmu_object_type_t type)
2475 {
2476         uint64_t refcnt = 0;
2477
2478         ASSERT(type < ZDB_OT_TOTAL);
2479
2480         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2481                 return;
2482
2483         for (int i = 0; i < 4; i++) {
2484                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2485                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2486                 int equal;
2487                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2488
2489                 zb->zb_asize += BP_GET_ASIZE(bp);
2490                 zb->zb_lsize += BP_GET_LSIZE(bp);
2491                 zb->zb_psize += BP_GET_PSIZE(bp);
2492                 zb->zb_count++;
2493
2494                 /*
2495                  * The histogram is only big enough to record blocks up to
2496                  * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2497                  * "other", bucket.
2498                  */
2499                 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2500                 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2501                 zb->zb_psize_histogram[idx]++;
2502
2503                 zb->zb_gangs += BP_COUNT_GANG(bp);
2504
2505                 switch (BP_GET_NDVAS(bp)) {
2506                 case 2:
2507                         if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2508                             DVA_GET_VDEV(&bp->blk_dva[1]))
2509                                 zb->zb_ditto_samevdev++;
2510                         break;
2511                 case 3:
2512                         equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2513                             DVA_GET_VDEV(&bp->blk_dva[1])) +
2514                             (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2515                             DVA_GET_VDEV(&bp->blk_dva[2])) +
2516                             (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2517                             DVA_GET_VDEV(&bp->blk_dva[2]));
2518                         if (equal != 0)
2519                                 zb->zb_ditto_samevdev++;
2520                         break;
2521                 }
2522
2523         }
2524
2525         if (BP_IS_EMBEDDED(bp)) {
2526                 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2527                 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2528                     [BPE_GET_PSIZE(bp)]++;
2529                 return;
2530         }
2531
2532         if (dump_opt['L'])
2533                 return;
2534
2535         if (BP_GET_DEDUP(bp)) {
2536                 ddt_t *ddt;
2537                 ddt_entry_t *dde;
2538
2539                 ddt = ddt_select(zcb->zcb_spa, bp);
2540                 ddt_enter(ddt);
2541                 dde = ddt_lookup(ddt, bp, B_FALSE);
2542
2543                 if (dde == NULL) {
2544                         refcnt = 0;
2545                 } else {
2546                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2547                         ddt_phys_decref(ddp);
2548                         refcnt = ddp->ddp_refcnt;
2549                         if (ddt_phys_total_refcnt(dde) == 0)
2550                                 ddt_remove(ddt, dde);
2551                 }
2552                 ddt_exit(ddt);
2553         }
2554
2555         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2556             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2557             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2558 }
2559
2560 /* ARGSUSED */
2561 static void
2562 zdb_blkptr_done(zio_t *zio)
2563 {
2564         spa_t *spa = zio->io_spa;
2565         blkptr_t *bp = zio->io_bp;
2566         int ioerr = zio->io_error;
2567         zdb_cb_t *zcb = zio->io_private;
2568         zbookmark_phys_t *zb = &zio->io_bookmark;
2569
2570         abd_free(zio->io_abd);
2571
2572         mutex_enter(&spa->spa_scrub_lock);
2573         spa->spa_scrub_inflight--;
2574         cv_broadcast(&spa->spa_scrub_io_cv);
2575
2576         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2577                 char blkbuf[BP_SPRINTF_LEN];
2578
2579                 zcb->zcb_haderrors = 1;
2580                 zcb->zcb_errors[ioerr]++;
2581
2582                 if (dump_opt['b'] >= 2)
2583                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2584                 else
2585                         blkbuf[0] = '\0';
2586
2587                 (void) printf("zdb_blkptr_cb: "
2588                     "Got error %d reading "
2589                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2590                     ioerr,
2591                     (u_longlong_t)zb->zb_objset,
2592                     (u_longlong_t)zb->zb_object,
2593                     (u_longlong_t)zb->zb_level,
2594                     (u_longlong_t)zb->zb_blkid,
2595                     blkbuf);
2596         }
2597         mutex_exit(&spa->spa_scrub_lock);
2598 }
2599
2600 /* ARGSUSED */
2601 static int
2602 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2603     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2604 {
2605         zdb_cb_t *zcb = arg;
2606         dmu_object_type_t type;
2607         boolean_t is_metadata;
2608
2609         if (bp == NULL)
2610                 return (0);
2611
2612         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2613                 char blkbuf[BP_SPRINTF_LEN];
2614                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2615                 (void) printf("objset %llu object %llu "
2616                     "level %lld offset 0x%llx %s\n",
2617                     (u_longlong_t)zb->zb_objset,
2618                     (u_longlong_t)zb->zb_object,
2619                     (longlong_t)zb->zb_level,
2620                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2621                     blkbuf);
2622         }
2623
2624         if (BP_IS_HOLE(bp))
2625                 return (0);
2626
2627         type = BP_GET_TYPE(bp);
2628
2629         zdb_count_block(zcb, zilog, bp,
2630             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2631
2632         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2633
2634         if (!BP_IS_EMBEDDED(bp) &&
2635             (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2636                 size_t size = BP_GET_PSIZE(bp);
2637                 abd_t *abd = abd_alloc(size, B_FALSE);
2638                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2639
2640                 /* If it's an intent log block, failure is expected. */
2641                 if (zb->zb_level == ZB_ZIL_LEVEL)
2642                         flags |= ZIO_FLAG_SPECULATIVE;
2643
2644                 mutex_enter(&spa->spa_scrub_lock);
2645                 while (spa->spa_scrub_inflight > max_inflight)
2646                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2647                 spa->spa_scrub_inflight++;
2648                 mutex_exit(&spa->spa_scrub_lock);
2649
2650                 zio_nowait(zio_read(NULL, spa, bp, abd, size,
2651                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2652         }
2653
2654         zcb->zcb_readfails = 0;
2655
2656         /* only call gethrtime() every 100 blocks */
2657         static int iters;
2658         if (++iters > 100)
2659                 iters = 0;
2660         else
2661                 return (0);
2662
2663         if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2664                 uint64_t now = gethrtime();
2665                 char buf[10];
2666                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2667                 int kb_per_sec =
2668                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2669                 int sec_remaining =
2670                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2671
2672                 zfs_nicenum(bytes, buf, sizeof (buf));
2673                 (void) fprintf(stderr,
2674                     "\r%5s completed (%4dMB/s) "
2675                     "estimated time remaining: %uhr %02umin %02usec        ",
2676                     buf, kb_per_sec / 1024,
2677                     sec_remaining / 60 / 60,
2678                     sec_remaining / 60 % 60,
2679                     sec_remaining % 60);
2680
2681                 zcb->zcb_lastprint = now;
2682         }
2683
2684         return (0);
2685 }
2686
2687 static void
2688 zdb_leak(void *arg, uint64_t start, uint64_t size)
2689 {
2690         vdev_t *vd = arg;
2691
2692         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2693             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2694 }
2695
2696 static metaslab_ops_t zdb_metaslab_ops = {
2697         NULL    /* alloc */
2698 };
2699
2700 static void
2701 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2702 {
2703         ddt_bookmark_t ddb = { 0 };
2704         ddt_entry_t dde;
2705         int error;
2706
2707         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2708                 blkptr_t blk;
2709                 ddt_phys_t *ddp = dde.dde_phys;
2710
2711                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2712                         return;
2713
2714                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2715
2716                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2717                         if (ddp->ddp_phys_birth == 0)
2718                                 continue;
2719                         ddt_bp_create(ddb.ddb_checksum,
2720                             &dde.dde_key, ddp, &blk);
2721                         if (p == DDT_PHYS_DITTO) {
2722                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2723                         } else {
2724                                 zcb->zcb_dedup_asize +=
2725                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2726                                 zcb->zcb_dedup_blocks++;
2727                         }
2728                 }
2729                 if (!dump_opt['L']) {
2730                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2731                         ddt_enter(ddt);
2732                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2733                         ddt_exit(ddt);
2734                 }
2735         }
2736
2737         ASSERT(error == ENOENT);
2738 }
2739
2740 static void
2741 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2742 {
2743         zcb->zcb_spa = spa;
2744
2745         if (!dump_opt['L']) {
2746                 vdev_t *rvd = spa->spa_root_vdev;
2747
2748                 /*
2749                  * We are going to be changing the meaning of the metaslab's
2750                  * ms_tree.  Ensure that the allocator doesn't try to
2751                  * use the tree.
2752                  */
2753                 spa->spa_normal_class->mc_ops = &zdb_metaslab_ops;
2754                 spa->spa_log_class->mc_ops = &zdb_metaslab_ops;
2755
2756                 for (uint64_t c = 0; c < rvd->vdev_children; c++) {
2757                         vdev_t *vd = rvd->vdev_child[c];
2758                         metaslab_group_t *mg = vd->vdev_mg;
2759                         for (uint64_t m = 0; m < vd->vdev_ms_count; m++) {
2760                                 metaslab_t *msp = vd->vdev_ms[m];
2761                                 ASSERT3P(msp->ms_group, ==, mg);
2762                                 mutex_enter(&msp->ms_lock);
2763                                 metaslab_unload(msp);
2764
2765                                 /*
2766                                  * For leak detection, we overload the metaslab
2767                                  * ms_tree to contain allocated segments
2768                                  * instead of free segments. As a result,
2769                                  * we can't use the normal metaslab_load/unload
2770                                  * interfaces.
2771                                  */
2772                                 if (msp->ms_sm != NULL) {
2773                                         (void) fprintf(stderr,
2774                                             "\rloading space map for "
2775                                             "vdev %llu of %llu, "
2776                                             "metaslab %llu of %llu ...",
2777                                             (longlong_t)c,
2778                                             (longlong_t)rvd->vdev_children,
2779                                             (longlong_t)m,
2780                                             (longlong_t)vd->vdev_ms_count);
2781
2782                                         /*
2783                                          * We don't want to spend the CPU
2784                                          * manipulating the size-ordered
2785                                          * tree, so clear the range_tree
2786                                          * ops.
2787                                          */
2788                                         msp->ms_tree->rt_ops = NULL;
2789                                         VERIFY0(space_map_load(msp->ms_sm,
2790                                             msp->ms_tree, SM_ALLOC));
2791
2792                                         if (!msp->ms_loaded) {
2793                                                 msp->ms_loaded = B_TRUE;
2794                                         }
2795                                 }
2796                                 mutex_exit(&msp->ms_lock);
2797                         }
2798                 }
2799                 (void) fprintf(stderr, "\n");
2800         }
2801
2802         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2803
2804         zdb_ddt_leak_init(spa, zcb);
2805
2806         spa_config_exit(spa, SCL_CONFIG, FTAG);
2807 }
2808
2809 static void
2810 zdb_leak_fini(spa_t *spa)
2811 {
2812         if (!dump_opt['L']) {
2813                 vdev_t *rvd = spa->spa_root_vdev;
2814                 for (int c = 0; c < rvd->vdev_children; c++) {
2815                         vdev_t *vd = rvd->vdev_child[c];
2816                         metaslab_group_t *mg = vd->vdev_mg;
2817                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2818                                 metaslab_t *msp = vd->vdev_ms[m];
2819                                 ASSERT3P(mg, ==, msp->ms_group);
2820                                 mutex_enter(&msp->ms_lock);
2821
2822                                 /*
2823                                  * The ms_tree has been overloaded to
2824                                  * contain allocated segments. Now that we
2825                                  * finished traversing all blocks, any
2826                                  * block that remains in the ms_tree
2827                                  * represents an allocated block that we
2828                                  * did not claim during the traversal.
2829                                  * Claimed blocks would have been removed
2830                                  * from the ms_tree.
2831                                  */
2832                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2833
2834                                 if (msp->ms_loaded) {
2835                                         msp->ms_loaded = B_FALSE;
2836                                 }
2837
2838                                 mutex_exit(&msp->ms_lock);
2839                         }
2840                 }
2841         }
2842 }
2843
2844 /* ARGSUSED */
2845 static int
2846 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2847 {
2848         zdb_cb_t *zcb = arg;
2849
2850         if (dump_opt['b'] >= 5) {
2851                 char blkbuf[BP_SPRINTF_LEN];
2852                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2853                 (void) printf("[%s] %s\n",
2854                     "deferred free", blkbuf);
2855         }
2856         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2857         return (0);
2858 }
2859
2860 static int
2861 dump_block_stats(spa_t *spa)
2862 {
2863         zdb_cb_t zcb = { 0 };
2864         zdb_blkstats_t *zb, *tzb;
2865         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2866         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2867         boolean_t leaks = B_FALSE;
2868
2869         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2870             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2871             (dump_opt['c'] == 1) ? "metadata " : "",
2872             dump_opt['c'] ? "checksums " : "",
2873             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2874             !dump_opt['L'] ? "nothing leaked " : "");
2875
2876         /*
2877          * Load all space maps as SM_ALLOC maps, then traverse the pool
2878          * claiming each block we discover.  If the pool is perfectly
2879          * consistent, the space maps will be empty when we're done.
2880          * Anything left over is a leak; any block we can't claim (because
2881          * it's not part of any space map) is a double allocation,
2882          * reference to a freed block, or an unclaimed log block.
2883          */
2884         zdb_leak_init(spa, &zcb);
2885
2886         /*
2887          * If there's a deferred-free bplist, process that first.
2888          */
2889         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2890             count_block_cb, &zcb, NULL);
2891         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2892                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2893                     count_block_cb, &zcb, NULL);
2894         }
2895         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2896                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2897                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2898                     &zcb, NULL));
2899         }
2900
2901         if (dump_opt['c'] > 1)
2902                 flags |= TRAVERSE_PREFETCH_DATA;
2903
2904         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2905         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2906         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2907
2908         /*
2909          * If we've traversed the data blocks then we need to wait for those
2910          * I/Os to complete. We leverage "The Godfather" zio to wait on
2911          * all async I/Os to complete.
2912          */
2913         if (dump_opt['c']) {
2914                 for (int i = 0; i < max_ncpus; i++) {
2915                         (void) zio_wait(spa->spa_async_zio_root[i]);
2916                         spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
2917                             ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2918                             ZIO_FLAG_GODFATHER);
2919                 }
2920         }
2921
2922         if (zcb.zcb_haderrors) {
2923                 (void) printf("\nError counts:\n\n");
2924                 (void) printf("\t%5s  %s\n", "errno", "count");
2925                 for (int e = 0; e < 256; e++) {
2926                         if (zcb.zcb_errors[e] != 0) {
2927                                 (void) printf("\t%5d  %llu\n",
2928                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2929                         }
2930                 }
2931         }
2932
2933         /*
2934          * Report any leaked segments.
2935          */
2936         zdb_leak_fini(spa);
2937
2938         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2939
2940         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2941         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2942
2943         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2944         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2945
2946         if (total_found == total_alloc) {
2947                 if (!dump_opt['L'])
2948                         (void) printf("\n\tNo leaks (block sum matches space"
2949                             " maps exactly)\n");
2950         } else {
2951                 (void) printf("block traversal size %llu != alloc %llu "
2952                     "(%s %lld)\n",
2953                     (u_longlong_t)total_found,
2954                     (u_longlong_t)total_alloc,
2955                     (dump_opt['L']) ? "unreachable" : "leaked",
2956                     (longlong_t)(total_alloc - total_found));
2957                 leaks = B_TRUE;
2958         }
2959
2960         if (tzb->zb_count == 0)
2961                 return (2);
2962
2963         (void) printf("\n");
2964         (void) printf("\tbp count:      %10llu\n",
2965             (u_longlong_t)tzb->zb_count);
2966         (void) printf("\tganged count:  %10llu\n",
2967             (longlong_t)tzb->zb_gangs);
2968         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2969             (u_longlong_t)tzb->zb_lsize,
2970             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2971         (void) printf("\tbp physical:   %10llu      avg:"
2972             " %6llu     compression: %6.2f\n",
2973             (u_longlong_t)tzb->zb_psize,
2974             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2975             (double)tzb->zb_lsize / tzb->zb_psize);
2976         (void) printf("\tbp allocated:  %10llu      avg:"
2977             " %6llu     compression: %6.2f\n",
2978             (u_longlong_t)tzb->zb_asize,
2979             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2980             (double)tzb->zb_lsize / tzb->zb_asize);
2981         (void) printf("\tbp deduped:    %10llu    ref>1:"
2982             " %6llu   deduplication: %6.2f\n",
2983             (u_longlong_t)zcb.zcb_dedup_asize,
2984             (u_longlong_t)zcb.zcb_dedup_blocks,
2985             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2986         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2987             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2988
2989         for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2990                 if (zcb.zcb_embedded_blocks[i] == 0)
2991                         continue;
2992                 (void) printf("\n");
2993                 (void) printf("\tadditional, non-pointer bps of type %u: "
2994                     "%10llu\n",
2995                     i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2996
2997                 if (dump_opt['b'] >= 3) {
2998                         (void) printf("\t number of (compressed) bytes:  "
2999                             "number of bps\n");
3000                         dump_histogram(zcb.zcb_embedded_histogram[i],
3001                             sizeof (zcb.zcb_embedded_histogram[i]) /
3002                             sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
3003                 }
3004         }
3005
3006         if (tzb->zb_ditto_samevdev != 0) {
3007                 (void) printf("\tDittoed blocks on same vdev: %llu\n",
3008                     (longlong_t)tzb->zb_ditto_samevdev);
3009         }
3010
3011         if (dump_opt['b'] >= 2) {
3012                 int l, t, level;
3013                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
3014                     "\t  avg\t comp\t%%Total\tType\n");
3015
3016                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
3017                         char csize[32], lsize[32], psize[32], asize[32];
3018                         char avg[32], gang[32];
3019                         char *typename;
3020
3021                         if (t < DMU_OT_NUMTYPES)
3022                                 typename = dmu_ot[t].ot_name;
3023                         else
3024                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
3025
3026                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
3027                                 (void) printf("%6s\t%5s\t%5s\t%5s"
3028                                     "\t%5s\t%5s\t%6s\t%s\n",
3029                                     "-",
3030                                     "-",
3031                                     "-",
3032                                     "-",
3033                                     "-",
3034                                     "-",
3035                                     "-",
3036                                     typename);
3037                                 continue;
3038                         }
3039
3040                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
3041                                 level = (l == -1 ? ZB_TOTAL : l);
3042                                 zb = &zcb.zcb_type[level][t];
3043
3044                                 if (zb->zb_asize == 0)
3045                                         continue;
3046
3047                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
3048                                         continue;
3049
3050                                 if (level == 0 && zb->zb_asize ==
3051                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
3052                                         continue;
3053
3054                                 zdb_nicenum(zb->zb_count, csize);
3055                                 zdb_nicenum(zb->zb_lsize, lsize);
3056                                 zdb_nicenum(zb->zb_psize, psize);
3057                                 zdb_nicenum(zb->zb_asize, asize);
3058                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
3059                                 zdb_nicenum(zb->zb_gangs, gang);
3060
3061                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
3062                                     "\t%5.2f\t%6.2f\t",
3063                                     csize, lsize, psize, asize, avg,
3064                                     (double)zb->zb_lsize / zb->zb_psize,
3065                                     100.0 * zb->zb_asize / tzb->zb_asize);
3066
3067                                 if (level == ZB_TOTAL)
3068                                         (void) printf("%s\n", typename);
3069                                 else
3070                                         (void) printf("    L%d %s\n",
3071                                             level, typename);
3072
3073                                 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
3074                                         (void) printf("\t number of ganged "
3075                                             "blocks: %s\n", gang);
3076                                 }
3077
3078                                 if (dump_opt['b'] >= 4) {
3079                                         (void) printf("psize "
3080                                             "(in 512-byte sectors): "
3081                                             "number of blocks\n");
3082                                         dump_histogram(zb->zb_psize_histogram,
3083                                             PSIZE_HISTO_SIZE, 0);
3084                                 }
3085                         }
3086                 }
3087         }
3088
3089         (void) printf("\n");
3090
3091         if (leaks)
3092                 return (2);
3093
3094         if (zcb.zcb_haderrors)
3095                 return (3);
3096
3097         return (0);
3098 }
3099
3100 typedef struct zdb_ddt_entry {
3101         ddt_key_t       zdde_key;
3102         uint64_t        zdde_ref_blocks;
3103         uint64_t        zdde_ref_lsize;
3104         uint64_t        zdde_ref_psize;
3105         uint64_t        zdde_ref_dsize;
3106         avl_node_t      zdde_node;
3107 } zdb_ddt_entry_t;
3108
3109 /* ARGSUSED */
3110 static int
3111 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
3112     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
3113 {
3114         avl_tree_t *t = arg;
3115         avl_index_t where;
3116         zdb_ddt_entry_t *zdde, zdde_search;
3117
3118         if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
3119                 return (0);
3120
3121         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
3122                 (void) printf("traversing objset %llu, %llu objects, "
3123                     "%lu blocks so far\n",
3124                     (u_longlong_t)zb->zb_objset,
3125                     (u_longlong_t)BP_GET_FILL(bp),
3126                     avl_numnodes(t));
3127         }
3128
3129         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
3130             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
3131                 return (0);
3132
3133         ddt_key_fill(&zdde_search.zdde_key, bp);
3134
3135         zdde = avl_find(t, &zdde_search, &where);
3136
3137         if (zdde == NULL) {
3138                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
3139                 zdde->zdde_key = zdde_search.zdde_key;
3140                 avl_insert(t, zdde, where);
3141         }
3142
3143         zdde->zdde_ref_blocks += 1;
3144         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
3145         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
3146         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
3147
3148         return (0);
3149 }
3150
3151 static void
3152 dump_simulated_ddt(spa_t *spa)
3153 {
3154         avl_tree_t t;
3155         void *cookie = NULL;
3156         zdb_ddt_entry_t *zdde;
3157         ddt_histogram_t ddh_total = { 0 };
3158         ddt_stat_t dds_total = { 0 };
3159
3160         avl_create(&t, ddt_entry_compare,
3161             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
3162
3163         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3164
3165         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
3166             zdb_ddt_add_cb, &t);
3167
3168         spa_config_exit(spa, SCL_CONFIG, FTAG);
3169
3170         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
3171                 ddt_stat_t dds;
3172                 uint64_t refcnt = zdde->zdde_ref_blocks;
3173                 ASSERT(refcnt != 0);
3174
3175                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
3176                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
3177                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
3178                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
3179
3180                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
3181                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
3182                 dds.dds_ref_psize = zdde->zdde_ref_psize;
3183                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
3184
3185                 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
3186                     &dds, 0);
3187
3188                 umem_free(zdde, sizeof (*zdde));
3189         }
3190
3191         avl_destroy(&t);
3192
3193         ddt_histogram_stat(&dds_total, &ddh_total);
3194
3195         (void) printf("Simulated DDT histogram:\n");
3196
3197         zpool_dump_ddt(&dds_total, &ddh_total);
3198
3199         dump_dedup_ratio(&dds_total);
3200 }
3201
3202 static void
3203 dump_zpool(spa_t *spa)
3204 {
3205         dsl_pool_t *dp = spa_get_dsl(spa);
3206         int rc = 0;
3207
3208         if (dump_opt['S']) {
3209                 dump_simulated_ddt(spa);
3210                 return;
3211         }
3212
3213         if (!dump_opt['e'] && dump_opt['C'] > 1) {
3214                 (void) printf("\nCached configuration:\n");
3215                 dump_nvlist(spa->spa_config, 8);
3216         }
3217
3218         if (dump_opt['C'])
3219                 dump_config(spa);
3220
3221         if (dump_opt['u'])
3222                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
3223
3224         if (dump_opt['D'])
3225                 dump_all_ddts(spa);
3226
3227         if (dump_opt['d'] > 2 || dump_opt['m'])
3228                 dump_metaslabs(spa);
3229         if (dump_opt['M'])
3230                 dump_metaslab_groups(spa);
3231
3232         if (dump_opt['d'] || dump_opt['i']) {
3233                 dump_dir(dp->dp_meta_objset);
3234                 if (dump_opt['d'] >= 3) {
3235                         dump_full_bpobj(&spa->spa_deferred_bpobj,
3236                             "Deferred frees", 0);
3237                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3238                                 dump_full_bpobj(
3239                                     &spa->spa_dsl_pool->dp_free_bpobj,
3240                                     "Pool snapshot frees", 0);
3241                         }
3242
3243                         if (spa_feature_is_active(spa,
3244                             SPA_FEATURE_ASYNC_DESTROY)) {
3245                                 dump_bptree(spa->spa_meta_objset,
3246                                     spa->spa_dsl_pool->dp_bptree_obj,
3247                                     "Pool dataset frees");
3248                         }
3249                         dump_dtl(spa->spa_root_vdev, 0);
3250                 }
3251                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
3252                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
3253
3254                 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
3255                         uint64_t refcount;
3256
3257                         if (!(spa_feature_table[f].fi_flags &
3258                             ZFEATURE_FLAG_PER_DATASET)) {
3259                                 ASSERT0(dataset_feature_count[f]);
3260                                 continue;
3261                         }
3262                         (void) feature_get_refcount(spa,
3263                             &spa_feature_table[f], &refcount);
3264                         if (dataset_feature_count[f] != refcount) {
3265                                 (void) printf("%s feature refcount mismatch: "
3266                                     "%lld datasets != %lld refcount\n",
3267                                     spa_feature_table[f].fi_uname,
3268                                     (longlong_t)dataset_feature_count[f],
3269                                     (longlong_t)refcount);
3270                                 rc = 2;
3271                         } else {
3272                                 (void) printf("Verified %s feature refcount "
3273                                     "of %llu is correct\n",
3274                                     spa_feature_table[f].fi_uname,
3275                                     (longlong_t)refcount);
3276                         }
3277                 }
3278         }
3279         if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
3280                 rc = dump_block_stats(spa);
3281
3282         if (rc == 0)
3283                 rc = verify_spacemap_refcounts(spa);
3284
3285         if (dump_opt['s'])
3286                 show_pool_stats(spa);
3287
3288         if (dump_opt['h'])
3289                 dump_history(spa);
3290
3291         if (rc != 0) {
3292                 dump_debug_buffer();
3293                 exit(rc);
3294         }
3295 }
3296
3297 #define ZDB_FLAG_CHECKSUM       0x0001
3298 #define ZDB_FLAG_DECOMPRESS     0x0002
3299 #define ZDB_FLAG_BSWAP          0x0004
3300 #define ZDB_FLAG_GBH            0x0008
3301 #define ZDB_FLAG_INDIRECT       0x0010
3302 #define ZDB_FLAG_PHYS           0x0020
3303 #define ZDB_FLAG_RAW            0x0040
3304 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
3305
3306 int flagbits[256];
3307
3308 static void
3309 zdb_print_blkptr(blkptr_t *bp, int flags)
3310 {
3311         char blkbuf[BP_SPRINTF_LEN];
3312
3313         if (flags & ZDB_FLAG_BSWAP)
3314                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3315
3316         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3317         (void) printf("%s\n", blkbuf);
3318 }
3319
3320 static void
3321 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3322 {
3323         int i;
3324
3325         for (i = 0; i < nbps; i++)
3326                 zdb_print_blkptr(&bp[i], flags);
3327 }
3328
3329 static void
3330 zdb_dump_gbh(void *buf, int flags)
3331 {
3332         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3333 }
3334
3335 static void
3336 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3337 {
3338         if (flags & ZDB_FLAG_BSWAP)
3339                 byteswap_uint64_array(buf, size);
3340         (void) write(1, buf, size);
3341 }
3342
3343 static void
3344 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3345 {
3346         uint64_t *d = (uint64_t *)buf;
3347         int nwords = size / sizeof (uint64_t);
3348         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3349         int i, j;
3350         char *hdr, *c;
3351
3352
3353         if (do_bswap)
3354                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
3355         else
3356                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
3357
3358         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
3359
3360         for (i = 0; i < nwords; i += 2) {
3361                 (void) printf("%06llx:  %016llx  %016llx  ",
3362                     (u_longlong_t)(i * sizeof (uint64_t)),
3363                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3364                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3365
3366                 c = (char *)&d[i];
3367                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3368                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3369                 (void) printf("\n");
3370         }
3371 }
3372
3373 /*
3374  * There are two acceptable formats:
3375  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
3376  *      child[.child]*    - For example: 0.1.1
3377  *
3378  * The second form can be used to specify arbitrary vdevs anywhere
3379  * in the heirarchy.  For example, in a pool with a mirror of
3380  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3381  */
3382 static vdev_t *
3383 zdb_vdev_lookup(vdev_t *vdev, char *path)
3384 {
3385         char *s, *p, *q;
3386         int i;
3387
3388         if (vdev == NULL)
3389                 return (NULL);
3390
3391         /* First, assume the x.x.x.x format */
3392         i = (int)strtoul(path, &s, 10);
3393         if (s == path || (s && *s != '.' && *s != '\0'))
3394                 goto name;
3395         if (i < 0 || i >= vdev->vdev_children)
3396                 return (NULL);
3397
3398         vdev = vdev->vdev_child[i];
3399         if (*s == '\0')
3400                 return (vdev);
3401         return (zdb_vdev_lookup(vdev, s+1));
3402
3403 name:
3404         for (i = 0; i < vdev->vdev_children; i++) {
3405                 vdev_t *vc = vdev->vdev_child[i];
3406
3407                 if (vc->vdev_path == NULL) {
3408                         vc = zdb_vdev_lookup(vc, path);
3409                         if (vc == NULL)
3410                                 continue;
3411                         else
3412                                 return (vc);
3413                 }
3414
3415                 p = strrchr(vc->vdev_path, '/');
3416                 p = p ? p + 1 : vc->vdev_path;
3417                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3418
3419                 if (strcmp(vc->vdev_path, path) == 0)
3420                         return (vc);
3421                 if (strcmp(p, path) == 0)
3422                         return (vc);
3423                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3424                         return (vc);
3425         }
3426
3427         return (NULL);
3428 }
3429
3430 /* ARGSUSED */
3431 static int
3432 random_get_pseudo_bytes_cb(void *buf, size_t len, void *unused)
3433 {
3434         return (random_get_pseudo_bytes(buf, len));
3435 }
3436
3437 /*
3438  * Read a block from a pool and print it out.  The syntax of the
3439  * block descriptor is:
3440  *
3441  *      pool:vdev_specifier:offset:size[:flags]
3442  *
3443  *      pool           - The name of the pool you wish to read from
3444  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3445  *      offset         - offset, in hex, in bytes
3446  *      size           - Amount of data to read, in hex, in bytes
3447  *      flags          - A string of characters specifying options
3448  *               b: Decode a blkptr at given offset within block
3449  *              *c: Calculate and display checksums
3450  *               d: Decompress data before dumping
3451  *               e: Byteswap data before dumping
3452  *               g: Display data as a gang block header
3453  *               i: Display as an indirect block
3454  *               p: Do I/O to physical offset
3455  *               r: Dump raw data to stdout
3456  *
3457  *              * = not yet implemented
3458  */
3459 static void
3460 zdb_read_block(char *thing, spa_t *spa)
3461 {
3462         blkptr_t blk, *bp = &blk;
3463         dva_t *dva = bp->blk_dva;
3464         int flags = 0;
3465         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3466         zio_t *zio;
3467         vdev_t *vd;
3468         abd_t *pabd;
3469         void *lbuf, *buf;
3470         char *s, *p, *dup, *vdev, *flagstr;
3471         int i, error;
3472
3473         dup = strdup(thing);
3474         s = strtok(dup, ":");
3475         vdev = s ? s : "";
3476         s = strtok(NULL, ":");
3477         offset = strtoull(s ? s : "", NULL, 16);
3478         s = strtok(NULL, ":");
3479         size = strtoull(s ? s : "", NULL, 16);
3480         s = strtok(NULL, ":");
3481         flagstr = s ? s : "";
3482
3483         s = NULL;
3484         if (size == 0)
3485                 s = "size must not be zero";
3486         if (!IS_P2ALIGNED(size, DEV_BSIZE))
3487                 s = "size must be a multiple of sector size";
3488         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3489                 s = "offset must be a multiple of sector size";
3490         if (s) {
3491                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3492                 free(dup);
3493                 return;
3494         }
3495
3496         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3497                 for (i = 0; flagstr[i]; i++) {
3498                         int bit = flagbits[(uchar_t)flagstr[i]];
3499
3500                         if (bit == 0) {
3501                                 (void) printf("***Invalid flag: %c\n",
3502                                     flagstr[i]);
3503                                 continue;
3504                         }
3505                         flags |= bit;
3506
3507                         /* If it's not something with an argument, keep going */
3508                         if ((bit & (ZDB_FLAG_CHECKSUM |
3509                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3510                                 continue;
3511
3512                         p = &flagstr[i + 1];
3513                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
3514                                 blkptr_offset = strtoull(p, &p, 16);
3515                         if (*p != ':' && *p != '\0') {
3516                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3517                                 free(dup);
3518                                 return;
3519                         }
3520                         i += p - &flagstr[i + 1]; /* skip over the number */
3521                 }
3522         }
3523
3524         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3525         if (vd == NULL) {
3526                 (void) printf("***Invalid vdev: %s\n", vdev);
3527                 free(dup);
3528                 return;
3529         } else {
3530                 if (vd->vdev_path)
3531                         (void) fprintf(stderr, "Found vdev: %s\n",
3532                             vd->vdev_path);
3533                 else
3534                         (void) fprintf(stderr, "Found vdev type: %s\n",
3535                             vd->vdev_ops->vdev_op_type);
3536         }
3537
3538         psize = size;
3539         lsize = size;
3540
3541         pabd = abd_alloc_linear(SPA_MAXBLOCKSIZE, B_FALSE);
3542         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3543
3544         BP_ZERO(bp);
3545
3546         DVA_SET_VDEV(&dva[0], vd->vdev_id);
3547         DVA_SET_OFFSET(&dva[0], offset);
3548         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3549         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3550
3551         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3552
3553         BP_SET_LSIZE(bp, lsize);
3554         BP_SET_PSIZE(bp, psize);
3555         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3556         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3557         BP_SET_TYPE(bp, DMU_OT_NONE);
3558         BP_SET_LEVEL(bp, 0);
3559         BP_SET_DEDUP(bp, 0);
3560         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3561
3562         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3563         zio = zio_root(spa, NULL, NULL, 0);
3564
3565         if (vd == vd->vdev_top) {
3566                 /*
3567                  * Treat this as a normal block read.
3568                  */
3569                 zio_nowait(zio_read(zio, spa, bp, pabd, psize, NULL, NULL,
3570                     ZIO_PRIORITY_SYNC_READ,
3571                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3572         } else {
3573                 /*
3574                  * Treat this as a vdev child I/O.
3575                  */
3576                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pabd,
3577                     psize, ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3578                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3579                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3580                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3581         }
3582
3583         error = zio_wait(zio);
3584         spa_config_exit(spa, SCL_STATE, FTAG);
3585
3586         if (error) {
3587                 (void) printf("Read of %s failed, error: %d\n", thing, error);
3588                 goto out;
3589         }
3590
3591         if (flags & ZDB_FLAG_DECOMPRESS) {
3592                 /*
3593                  * We don't know how the data was compressed, so just try
3594                  * every decompress function at every inflated blocksize.
3595                  */
3596                 enum zio_compress c;
3597                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3598                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3599
3600                 abd_copy_to_buf(pbuf2, pabd, psize);
3601
3602                 VERIFY0(abd_iterate_func(pabd, psize, SPA_MAXBLOCKSIZE - psize,
3603                     random_get_pseudo_bytes_cb, NULL));
3604
3605                 VERIFY0(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3606                     SPA_MAXBLOCKSIZE - psize));
3607
3608                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3609                     lsize -= SPA_MINBLOCKSIZE) {
3610                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3611                                 if (zio_decompress_data(c, pabd,
3612                                     lbuf, psize, lsize) == 0 &&
3613                                     zio_decompress_data_buf(c, pbuf2,
3614                                     lbuf2, psize, lsize) == 0 &&
3615                                     bcmp(lbuf, lbuf2, lsize) == 0)
3616                                         break;
3617                         }
3618                         if (c != ZIO_COMPRESS_FUNCTIONS)
3619                                 break;
3620                         lsize -= SPA_MINBLOCKSIZE;
3621                 }
3622
3623                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3624                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3625
3626                 if (lsize <= psize) {
3627                         (void) printf("Decompress of %s failed\n", thing);
3628                         goto out;
3629                 }
3630                 buf = lbuf;
3631                 size = lsize;
3632         } else {
3633                 buf = abd_to_buf(pabd);
3634                 size = psize;
3635         }
3636
3637         if (flags & ZDB_FLAG_PRINT_BLKPTR)
3638                 zdb_print_blkptr((blkptr_t *)(void *)
3639                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3640         else if (flags & ZDB_FLAG_RAW)
3641                 zdb_dump_block_raw(buf, size, flags);
3642         else if (flags & ZDB_FLAG_INDIRECT)
3643                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3644                     flags);
3645         else if (flags & ZDB_FLAG_GBH)
3646                 zdb_dump_gbh(buf, flags);
3647         else
3648                 zdb_dump_block(thing, buf, size, flags);
3649
3650 out:
3651         abd_free(pabd);
3652         umem_free(lbuf, SPA_MAXBLOCKSIZE);
3653         free(dup);
3654 }
3655
3656 static boolean_t
3657 pool_match(nvlist_t *cfg, char *tgt)
3658 {
3659         uint64_t v, guid = strtoull(tgt, NULL, 0);
3660         char *s;
3661
3662         if (guid != 0) {
3663                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3664                         return (v == guid);
3665         } else {
3666                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3667                         return (strcmp(s, tgt) == 0);
3668         }
3669         return (B_FALSE);
3670 }
3671
3672 static char *
3673 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3674 {
3675         nvlist_t *pools;
3676         nvlist_t *match = NULL;
3677         char *name = NULL;
3678         char *sepp = NULL;
3679         char sep = '\0';
3680         int count = 0;
3681         importargs_t args = { 0 };
3682
3683         args.paths = dirc;
3684         args.path = dirv;
3685         args.can_be_active = B_TRUE;
3686
3687         if ((sepp = strpbrk(*target, "/@")) != NULL) {
3688                 sep = *sepp;
3689                 *sepp = '\0';
3690         }
3691
3692         pools = zpool_search_import(g_zfs, &args);
3693
3694         if (pools != NULL) {
3695                 nvpair_t *elem = NULL;
3696                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3697                         verify(nvpair_value_nvlist(elem, configp) == 0);
3698                         if (pool_match(*configp, *target)) {
3699                                 count++;
3700                                 if (match != NULL) {
3701                                         /* print previously found config */
3702                                         if (name != NULL) {
3703                                                 (void) printf("%s\n", name);
3704                                                 dump_nvlist(match, 8);
3705                                                 name = NULL;
3706                                         }
3707                                         (void) printf("%s\n",
3708                                             nvpair_name(elem));
3709                                         dump_nvlist(*configp, 8);
3710                                 } else {
3711                                         match = *configp;
3712                                         name = nvpair_name(elem);
3713                                 }
3714                         }
3715                 }
3716         }
3717         if (count > 1)
3718                 (void) fatal("\tMatched %d pools - use pool GUID "
3719                     "instead of pool name or \n"
3720                     "\tpool name part of a dataset name to select pool", count);
3721
3722         if (sepp)
3723                 *sepp = sep;
3724         /*
3725          * If pool GUID was specified for pool id, replace it with pool name
3726          */
3727         if (name && (strstr(*target, name) != *target)) {
3728                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3729
3730                 *target = umem_alloc(sz, UMEM_NOFAIL);
3731                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3732         }
3733
3734         *configp = name ? match : NULL;
3735
3736         return (name);
3737 }
3738
3739 int
3740 main(int argc, char **argv)
3741 {
3742         int i, c;
3743         struct rlimit rl = { 1024, 1024 };
3744         spa_t *spa = NULL;
3745         objset_t *os = NULL;
3746         int dump_all = 1;
3747         int verbose = 0;
3748         int error = 0;
3749         char **searchdirs = NULL;
3750         int nsearch = 0;
3751         char *target;
3752         nvlist_t *policy = NULL;
3753         uint64_t max_txg = UINT64_MAX;
3754         int flags = ZFS_IMPORT_MISSING_LOG;
3755         int rewind = ZPOOL_NEVER_REWIND;
3756         char *spa_config_path_env;
3757         boolean_t target_is_spa = B_TRUE;
3758
3759         (void) setrlimit(RLIMIT_NOFILE, &rl);
3760         (void) enable_extended_FILE_stdio(-1, -1);
3761
3762         dprintf_setup(&argc, argv);
3763
3764         /*
3765          * If there is an environment variable SPA_CONFIG_PATH it overrides
3766          * default spa_config_path setting. If -U flag is specified it will
3767          * override this environment variable settings once again.
3768          */
3769         spa_config_path_env = getenv("SPA_CONFIG_PATH");
3770         if (spa_config_path_env != NULL)
3771                 spa_config_path = spa_config_path_env;
3772
3773         while ((c = getopt(argc, argv,
3774             "AbcCdDeFGhiI:lLmMo:Op:PqRsSt:uU:vVx:X")) != -1) {
3775                 switch (c) {
3776                 case 'b':
3777                 case 'c':
3778                 case 'C':
3779                 case 'd':
3780                 case 'D':
3781                 case 'G':
3782                 case 'h':
3783                 case 'i':
3784                 case 'l':
3785                 case 'm':
3786                 case 'M':
3787                 case 'O':
3788                 case 'R':
3789                 case 's':
3790                 case 'S':
3791                 case 'u':
3792                         dump_opt[c]++;
3793                         dump_all = 0;
3794                         break;
3795                 case 'A':
3796                 case 'e':
3797                 case 'F':
3798                 case 'L':
3799                 case 'P':
3800                 case 'q':
3801                 case 'X':
3802                         dump_opt[c]++;
3803                         break;
3804                 /* NB: Sort single match options below. */
3805                 case 'I':
3806                         max_inflight = strtoull(optarg, NULL, 0);
3807                         if (max_inflight == 0) {
3808                                 (void) fprintf(stderr, "maximum number "
3809                                     "of inflight I/Os must be greater "
3810                                     "than 0\n");
3811                                 usage();
3812                         }
3813                         break;
3814                 case 'o':
3815                         error = set_global_var(optarg);
3816                         if (error != 0)
3817                                 usage();
3818                         break;
3819                 case 'p':
3820                         if (searchdirs == NULL) {
3821                                 searchdirs = umem_alloc(sizeof (char *),
3822                                     UMEM_NOFAIL);
3823                         } else {
3824                                 char **tmp = umem_alloc((nsearch + 1) *
3825                                     sizeof (char *), UMEM_NOFAIL);
3826                                 bcopy(searchdirs, tmp, nsearch *
3827                                     sizeof (char *));
3828                                 umem_free(searchdirs,
3829                                     nsearch * sizeof (char *));
3830                                 searchdirs = tmp;
3831                         }
3832                         searchdirs[nsearch++] = optarg;
3833                         break;
3834                 case 't':
3835                         max_txg = strtoull(optarg, NULL, 0);
3836                         if (max_txg < TXG_INITIAL) {
3837                                 (void) fprintf(stderr, "incorrect txg "
3838                                     "specified: %s\n", optarg);
3839                                 usage();
3840                         }
3841                         break;
3842                 case 'U':
3843                         spa_config_path = optarg;
3844                         break;
3845                 case 'v':
3846                         verbose++;
3847                         break;
3848                 case 'V':
3849                         flags = ZFS_IMPORT_VERBATIM;
3850                         break;
3851                 case 'x':
3852                         vn_dumpdir = optarg;
3853                         break;
3854                 default:
3855                         usage();
3856                         break;
3857                 }
3858         }
3859
3860         if (!dump_opt['e'] && searchdirs != NULL) {
3861                 (void) fprintf(stderr, "-p option requires use of -e\n");
3862                 usage();
3863         }
3864
3865         /*
3866          * ZDB does not typically re-read blocks; therefore limit the ARC
3867          * to 256 MB, which can be used entirely for metadata.
3868          */
3869         zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
3870
3871         /*
3872          * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
3873          * "zdb -b" uses traversal prefetch which uses async reads.
3874          * For good performance, let several of them be active at once.
3875          */
3876         zfs_vdev_async_read_max_active = 10;
3877
3878         /*
3879          * Disable reference tracking for better performance.
3880          */
3881         reference_tracking_enable = B_FALSE;
3882
3883         kernel_init(FREAD);
3884         g_zfs = libzfs_init();
3885         if (g_zfs == NULL)
3886                 fatal("Fail to initialize zfs");
3887
3888         if (dump_all)
3889                 verbose = MAX(verbose, 1);
3890
3891         for (c = 0; c < 256; c++) {
3892                 if (dump_all && strchr("AeFlLOPRSX", c) == NULL)
3893                         dump_opt[c] = 1;
3894                 if (dump_opt[c])
3895                         dump_opt[c] += verbose;
3896         }
3897
3898         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3899         zfs_recover = (dump_opt['A'] > 1);
3900
3901         argc -= optind;
3902         argv += optind;
3903
3904         if (argc < 2 && dump_opt['R'])
3905                 usage();
3906         if (argc < 1) {
3907                 if (!dump_opt['e'] && dump_opt['C']) {
3908                         dump_cachefile(spa_config_path);
3909                         return (0);
3910                 }
3911                 usage();
3912         }
3913
3914         if (dump_opt['l'])
3915                 return (dump_label(argv[0]));
3916
3917         if (dump_opt['O']) {
3918                 if (argc != 2)
3919                         usage();
3920                 dump_opt['v'] = verbose + 3;
3921                 return (dump_path(argv[0], argv[1]));
3922         }
3923
3924         if (dump_opt['X'] || dump_opt['F'])
3925                 rewind = ZPOOL_DO_REWIND |
3926                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3927
3928         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3929             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3930             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3931                 fatal("internal error: %s", strerror(ENOMEM));
3932
3933         error = 0;
3934         target = argv[0];
3935
3936         if (dump_opt['e']) {
3937                 nvlist_t *cfg = NULL;
3938                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3939
3940                 error = ENOENT;
3941                 if (name) {
3942                         if (dump_opt['C'] > 1) {
3943                                 (void) printf("\nConfiguration for import:\n");
3944                                 dump_nvlist(cfg, 8);
3945                         }
3946                         if (nvlist_add_nvlist(cfg,
3947                             ZPOOL_REWIND_POLICY, policy) != 0) {
3948                                 fatal("can't open '%s': %s",
3949                                     target, strerror(ENOMEM));
3950                         }
3951                         error = spa_import(name, cfg, NULL, flags);
3952                 }
3953         }
3954
3955         if (strpbrk(target, "/@") != NULL) {
3956                 size_t targetlen;
3957
3958                 target_is_spa = B_FALSE;
3959                 /*
3960                  * Remove any trailing slash.  Later code would get confused
3961                  * by it, but we want to allow it so that "pool/" can
3962                  * indicate that we want to dump the topmost filesystem,
3963                  * rather than the whole pool.
3964                  */
3965                 targetlen = strlen(target);
3966                 if (targetlen != 0 && target[targetlen - 1] == '/')
3967                         target[targetlen - 1] = '\0';
3968         }
3969
3970         if (error == 0) {
3971                 if (target_is_spa || dump_opt['R']) {
3972                         error = spa_open_rewind(target, &spa, FTAG, policy,
3973                             NULL);
3974                         if (error) {
3975                                 /*
3976                                  * If we're missing the log device then
3977                                  * try opening the pool after clearing the
3978                                  * log state.
3979                                  */
3980                                 mutex_enter(&spa_namespace_lock);
3981                                 if ((spa = spa_lookup(target)) != NULL &&
3982                                     spa->spa_log_state == SPA_LOG_MISSING) {
3983                                         spa->spa_log_state = SPA_LOG_CLEAR;
3984                                         error = 0;
3985                                 }
3986                                 mutex_exit(&spa_namespace_lock);
3987
3988                                 if (!error) {
3989                                         error = spa_open_rewind(target, &spa,
3990                                             FTAG, policy, NULL);
3991                                 }
3992                         }
3993                 } else {
3994                         error = open_objset(target, DMU_OST_ANY, FTAG, &os);
3995                 }
3996         }
3997         nvlist_free(policy);
3998
3999         if (error)
4000                 fatal("can't open '%s': %s", target, strerror(error));
4001
4002         argv++;
4003         argc--;
4004         if (!dump_opt['R']) {
4005                 if (argc > 0) {
4006                         zopt_objects = argc;
4007                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
4008                         for (i = 0; i < zopt_objects; i++) {
4009                                 errno = 0;
4010                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
4011                                 if (zopt_object[i] == 0 && errno != 0)
4012                                         fatal("bad number %s: %s",
4013                                             argv[i], strerror(errno));
4014                         }
4015                 }
4016                 if (os != NULL) {
4017                         dump_dir(os);
4018                 } else if (zopt_objects > 0 && !dump_opt['m']) {
4019                         dump_dir(spa->spa_meta_objset);
4020                 } else {
4021                         dump_zpool(spa);
4022                 }
4023         } else {
4024                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
4025                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
4026                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
4027                 flagbits['e'] = ZDB_FLAG_BSWAP;
4028                 flagbits['g'] = ZDB_FLAG_GBH;
4029                 flagbits['i'] = ZDB_FLAG_INDIRECT;
4030                 flagbits['p'] = ZDB_FLAG_PHYS;
4031                 flagbits['r'] = ZDB_FLAG_RAW;
4032
4033                 for (i = 0; i < argc; i++)
4034                         zdb_read_block(argv[i], spa);
4035         }
4036
4037         if (os != NULL)
4038                 close_objset(os, FTAG);
4039         else
4040                 spa_close(spa, FTAG);
4041
4042         fuid_table_destroy();
4043
4044         dump_debug_buffer();
4045
4046         libzfs_fini(g_zfs);
4047         kernel_fini();
4048
4049         return (0);
4050 }