granicus.if.org Git - zfs/blob - 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 2016 Nexenta Systems, Inc.
  27  * Copyright (c) 2017 Lawrence Livermore National Security, LLC.
  28  * Copyright (c) 2015, 2017, Intel Corporation.
  29  */
  30
  31 #include <stdio.h>
  32 #include <unistd.h>
  33 #include <stdio_ext.h>
  34 #include <stdlib.h>
  35 #include <ctype.h>
  36 #include <sys/zfs_context.h>
  37 #include <sys/spa.h>
  38 #include <sys/spa_impl.h>
  39 #include <sys/dmu.h>
  40 #include <sys/zap.h>
  41 #include <sys/fs/zfs.h>
  42 #include <sys/zfs_znode.h>
  43 #include <sys/zfs_sa.h>
  44 #include <sys/sa.h>
  45 #include <sys/sa_impl.h>
  46 #include <sys/vdev.h>
  47 #include <sys/vdev_impl.h>
  48 #include <sys/metaslab_impl.h>
  49 #include <sys/dmu_objset.h>
  50 #include <sys/dsl_dir.h>
  51 #include <sys/dsl_dataset.h>
  52 #include <sys/dsl_pool.h>
  53 #include <sys/dbuf.h>
  54 #include <sys/zil.h>
  55 #include <sys/zil_impl.h>
  56 #include <sys/stat.h>
  57 #include <sys/resource.h>
  58 #include <sys/dmu_traverse.h>
  59 #include <sys/zio_checksum.h>
  60 #include <sys/zio_compress.h>
  61 #include <sys/zfs_fuid.h>
  62 #include <sys/arc.h>
  63 #include <sys/ddt.h>
  64 #include <sys/zfeature.h>
  65 #include <sys/abd.h>
  66 #include <zfs_comutil.h>
  67 #include <libzfs.h>
  68
  69 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?        \
  70         zio_compress_table[(idx)].ci_name : "UNKNOWN")
  71 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?        \
  72         zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  73 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :             \
  74         (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
  75         DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
  76
  77 static char *
  78 zdb_ot_name(dmu_object_type_t type)
  79 {
  80         if (type < DMU_OT_NUMTYPES)
  81                 return (dmu_ot[type].ot_name);
  82         else if ((type & DMU_OT_NEWTYPE) &&
  83             ((type & DMU_OT_BYTESWAP_MASK) < DMU_BSWAP_NUMFUNCS))
  84                 return (dmu_ot_byteswap[type & DMU_OT_BYTESWAP_MASK].ob_name);
  85         else
  86                 return ("UNKNOWN");
  87 }
  88
  89 extern int reference_tracking_enable;
  90 extern int zfs_recover;
  91 extern uint64_t zfs_arc_max, zfs_arc_meta_limit;
  92 extern int zfs_vdev_async_read_max_active;
  93
  94 const char cmdname[] = "zdb";
  95 uint8_t dump_opt[256];
  96
  97 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  98
  99 extern void dump_intent_log(zilog_t *);
 100 uint64_t *zopt_object = NULL;
 101 int zopt_objects = 0;
 102 libzfs_handle_t *g_zfs;
 103 uint64_t max_inflight = 1000;
 104
 105 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *);
 106
 107 /*
 108  * These libumem hooks provide a reasonable set of defaults for the allocator's
 109  * debugging facilities.
 110  */
 111 const char *
 112 _umem_debug_init(void)
 113 {
 114         return ("default,verbose"); /* $UMEM_DEBUG setting */
 115 }
 116
 117 const char *
 118 _umem_logging_init(void)
 119 {
 120         return ("fail,contents"); /* $UMEM_LOGGING setting */
 121 }
 122
 123 static void
 124 usage(void)
 125 {
 126         (void) fprintf(stderr,
 127             "Usage:\t%s [-AbcdDFGhiLMPsvVX] [-e [-p <path> ...]] "
 128             "[-I <inflight I/Os>]\n"
 129             "\t\t[-o <var>=<value>]... [-t <txg>] [-U <cache>] [-x <dumpdir>]\n"
 130             "\t\t[<poolname> [<object> ...]]\n"
 131             "\t%s [-AdiPv] [-e [-p <path> ...]] [-U <cache>] <dataset> "
 132             "[<object> ...]\n"
 133             "\t%s -C [-A] [-U <cache>]\n"
 134             "\t%s -l [-Aqu] <device>\n"
 135             "\t%s -m [-AFLPX] [-e [-p <path> ...]] [-t <txg>] [-U <cache>]\n"
 136             "\t\t<poolname> [<vdev> [<metaslab> ...]]\n"
 137             "\t%s -O <dataset> <path>\n"
 138             "\t%s -R [-A] [-e [-p <path> ...]] [-U <cache>]\n"
 139             "\t\t<poolname> <vdev>:<offset>:<size>[:<flags>]\n"
 140             "\t%s -S [-AP] [-e [-p <path> ...]] [-U <cache>] <poolname>\n\n",
 141             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname,
 142             cmdname);
 143
 144         (void) fprintf(stderr, "    Dataset name must include at least one "
 145             "separator character '/' or '@'\n");
 146         (void) fprintf(stderr, "    If dataset name is specified, only that "
 147             "dataset is dumped\n");
 148         (void) fprintf(stderr, "    If object numbers are specified, only "
 149             "those objects are dumped\n\n");
 150         (void) fprintf(stderr, "    Options to control amount of output:\n");
 151         (void) fprintf(stderr, "        -b block statistics\n");
 152         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 153             "all data) blocks\n");
 154         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 155         (void) fprintf(stderr, "        -d dataset(s)\n");
 156         (void) fprintf(stderr, "        -D dedup statistics\n");
 157         (void) fprintf(stderr, "        -h pool history\n");
 158         (void) fprintf(stderr, "        -i intent logs\n");
 159         (void) fprintf(stderr, "        -l read label contents\n");
 160         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 161             "load spacemaps)\n");
 162         (void) fprintf(stderr, "        -m metaslabs\n");
 163         (void) fprintf(stderr, "        -M metaslab groups\n");
 164         (void) fprintf(stderr, "        -O perform object lookups by path\n");
 165         (void) fprintf(stderr, "        -R read and display block from a "
 166             "device\n");
 167         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 168         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 169         (void) fprintf(stderr, "        -v verbose (applies to all "
 170             "others)\n\n");
 171         (void) fprintf(stderr, "    Below options are intended for use "
 172             "with other options:\n");
 173         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 174             "panic recovery (-AA) or both (-AAA)\n");
 175         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 176             "has altroot/not in a cachefile\n");
 177         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 178             "safe range of transaction groups\n");
 179         (void) fprintf(stderr, "        -G dump zfs_dbgmsg buffer before "
 180             "exiting\n");
 181         (void) fprintf(stderr, "        -I <number of inflight I/Os> -- "
 182             "specify the maximum number of\n           "
 183             "checksumming I/Os [default is 200]\n");
 184         (void) fprintf(stderr, "        -o <variable>=<value> set global "
 185             "variable to an unsigned 32-bit integer\n");
 186         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 187             "-e to specify path to vdev dir\n");
 188         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 189         (void) fprintf(stderr, "        -q don't print label contents\n");
 190         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 191             "searching for uberblocks\n");
 192         (void) fprintf(stderr, "        -u uberblock\n");
 193         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 194             "cachefile\n");
 195         (void) fprintf(stderr, "        -x <dumpdir> -- "
 196             "dump all read blocks into specified directory\n");
 197         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 198             "work with dataset)\n");
 199         (void) fprintf(stderr, "        -V verbatim import (as if it had been "
 200             "loaded at boot)\n\n");
 201         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 202             "to make only that option verbose\n");
 203         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 204         exit(1);
 205 }
 206
 207 static void
 208 dump_debug_buffer(void)
 209 {
 210         if (dump_opt['G']) {
 211                 (void) printf("\n");
 212                 zfs_dbgmsg_print("zdb");
 213         }
 214 }
 215
 216 /*
 217  * Called for usage errors that are discovered after a call to spa_open(),
 218  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 219  */
 220
 221 static void
 222 fatal(const char *fmt, ...)
 223 {
 224         va_list ap;
 225
 226         va_start(ap, fmt);
 227         (void) fprintf(stderr, "%s: ", cmdname);
 228         (void) vfprintf(stderr, fmt, ap);
 229         va_end(ap);
 230         (void) fprintf(stderr, "\n");
 231
 232         dump_debug_buffer();
 233
 234         exit(1);
 235 }
 236
 237 /* ARGSUSED */
 238 static void
 239 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 240 {
 241         nvlist_t *nv;
 242         size_t nvsize = *(uint64_t *)data;
 243         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 244
 245         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 246
 247         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 248
 249         umem_free(packed, nvsize);
 250
 251         dump_nvlist(nv, 8);
 252
 253         nvlist_free(nv);
 254 }
 255
 256 /* ARGSUSED */
 257 static void
 258 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
 259 {
 260         spa_history_phys_t *shp = data;
 261
 262         if (shp == NULL)
 263                 return;
 264
 265         (void) printf("\t\tpool_create_len = %llu\n",
 266             (u_longlong_t)shp->sh_pool_create_len);
 267         (void) printf("\t\tphys_max_off = %llu\n",
 268             (u_longlong_t)shp->sh_phys_max_off);
 269         (void) printf("\t\tbof = %llu\n",
 270             (u_longlong_t)shp->sh_bof);
 271         (void) printf("\t\teof = %llu\n",
 272             (u_longlong_t)shp->sh_eof);
 273         (void) printf("\t\trecords_lost = %llu\n",
 274             (u_longlong_t)shp->sh_records_lost);
 275 }
 276
 277 static void
 278 zdb_nicenum(uint64_t num, char *buf)
 279 {
 280         if (dump_opt['P'])
 281                 (void) sprintf(buf, "%llu", (longlong_t)num);
 282         else
 283                 nicenum(num, buf);
 284 }
 285
 286 const char histo_stars[] = "****************************************";
 287 const int histo_width = sizeof (histo_stars) - 1;
 288
 289 static void
 290 dump_histogram(const uint64_t *histo, int size, int offset)
 291 {
 292         int i;
 293         int minidx = size - 1;
 294         int maxidx = 0;
 295         uint64_t max = 0;
 296
 297         for (i = 0; i < size; i++) {
 298                 if (histo[i] > max)
 299                         max = histo[i];
 300                 if (histo[i] > 0 && i > maxidx)
 301                         maxidx = i;
 302                 if (histo[i] > 0 && i < minidx)
 303                         minidx = i;
 304         }
 305
 306         if (max < histo_width)
 307                 max = histo_width;
 308
 309         for (i = minidx; i <= maxidx; i++) {
 310                 (void) printf("\t\t\t%3u: %6llu %s\n",
 311                     i + offset, (u_longlong_t)histo[i],
 312                     &histo_stars[(max - histo[i]) * histo_width / max]);
 313         }
 314 }
 315
 316 static void
 317 dump_zap_stats(objset_t *os, uint64_t object)
 318 {
 319         int error;
 320         zap_stats_t zs;
 321
 322         error = zap_get_stats(os, object, &zs);
 323         if (error)
 324                 return;
 325
 326         if (zs.zs_ptrtbl_len == 0) {
 327                 ASSERT(zs.zs_num_blocks == 1);
 328                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 329                     (u_longlong_t)zs.zs_blocksize,
 330                     (u_longlong_t)zs.zs_num_entries);
 331                 return;
 332         }
 333
 334         (void) printf("\tFat ZAP stats:\n");
 335
 336         (void) printf("\t\tPointer table:\n");
 337         (void) printf("\t\t\t%llu elements\n",
 338             (u_longlong_t)zs.zs_ptrtbl_len);
 339         (void) printf("\t\t\tzt_blk: %llu\n",
 340             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 341         (void) printf("\t\t\tzt_numblks: %llu\n",
 342             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 343         (void) printf("\t\t\tzt_shift: %llu\n",
 344             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 345         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 346             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 347         (void) printf("\t\t\tzt_nextblk: %llu\n",
 348             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 349
 350         (void) printf("\t\tZAP entries: %llu\n",
 351             (u_longlong_t)zs.zs_num_entries);
 352         (void) printf("\t\tLeaf blocks: %llu\n",
 353             (u_longlong_t)zs.zs_num_leafs);
 354         (void) printf("\t\tTotal blocks: %llu\n",
 355             (u_longlong_t)zs.zs_num_blocks);
 356         (void) printf("\t\tzap_block_type: 0x%llx\n",
 357             (u_longlong_t)zs.zs_block_type);
 358         (void) printf("\t\tzap_magic: 0x%llx\n",
 359             (u_longlong_t)zs.zs_magic);
 360         (void) printf("\t\tzap_salt: 0x%llx\n",
 361             (u_longlong_t)zs.zs_salt);
 362
 363         (void) printf("\t\tLeafs with 2^n pointers:\n");
 364         dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
 365
 366         (void) printf("\t\tBlocks with n*5 entries:\n");
 367         dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
 368
 369         (void) printf("\t\tBlocks n/10 full:\n");
 370         dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
 371
 372         (void) printf("\t\tEntries with n chunks:\n");
 373         dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
 374
 375         (void) printf("\t\tBuckets with n entries:\n");
 376         dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
 377 }
 378
 379 /*ARGSUSED*/
 380 static void
 381 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 382 {
 383 }
 384
 385 /*ARGSUSED*/
 386 static void
 387 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 388 {
 389         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 390 }
 391
 392 /*ARGSUSED*/
 393 void
 394 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 395 {
 396 }
 397
 398 /*ARGSUSED*/
 399 static void
 400 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 401 {
 402 }
 403
 404 /*ARGSUSED*/
 405 static void
 406 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 407 {
 408         zap_cursor_t zc;
 409         zap_attribute_t attr;
 410         void *prop;
 411         int i;
 412
 413         dump_zap_stats(os, object);
 414         (void) printf("\n");
 415
 416         for (zap_cursor_init(&zc, os, object);
 417             zap_cursor_retrieve(&zc, &attr) == 0;
 418             zap_cursor_advance(&zc)) {
 419                 (void) printf("\t\t%s = ", attr.za_name);
 420                 if (attr.za_num_integers == 0) {
 421                         (void) printf("\n");
 422                         continue;
 423                 }
 424                 prop = umem_zalloc(attr.za_num_integers *
 425                     attr.za_integer_length, UMEM_NOFAIL);
 426                 (void) zap_lookup(os, object, attr.za_name,
 427                     attr.za_integer_length, attr.za_num_integers, prop);
 428                 if (attr.za_integer_length == 1) {
 429                         (void) printf("%s", (char *)prop);
 430                 } else {
 431                         for (i = 0; i < attr.za_num_integers; i++) {
 432                                 switch (attr.za_integer_length) {
 433                                 case 2:
 434                                         (void) printf("%u ",
 435                                             ((uint16_t *)prop)[i]);
 436                                         break;
 437                                 case 4:
 438                                         (void) printf("%u ",
 439                                             ((uint32_t *)prop)[i]);
 440                                         break;
 441                                 case 8:
 442                                         (void) printf("%lld ",
 443                                             (u_longlong_t)((int64_t *)prop)[i]);
 444                                         break;
 445                                 }
 446                         }
 447                 }
 448                 (void) printf("\n");
 449                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 450         }
 451         zap_cursor_fini(&zc);
 452 }
 453
 454 static void
 455 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size)
 456 {
 457         bpobj_phys_t *bpop = data;
 458         uint64_t i;
 459         char bytes[32], comp[32], uncomp[32];
 460
 461         if (bpop == NULL)
 462                 return;
 463
 464         zdb_nicenum(bpop->bpo_bytes, bytes);
 465         zdb_nicenum(bpop->bpo_comp, comp);
 466         zdb_nicenum(bpop->bpo_uncomp, uncomp);
 467
 468         (void) printf("\t\tnum_blkptrs = %llu\n",
 469             (u_longlong_t)bpop->bpo_num_blkptrs);
 470         (void) printf("\t\tbytes = %s\n", bytes);
 471         if (size >= BPOBJ_SIZE_V1) {
 472                 (void) printf("\t\tcomp = %s\n", comp);
 473                 (void) printf("\t\tuncomp = %s\n", uncomp);
 474         }
 475         if (size >= sizeof (*bpop)) {
 476                 (void) printf("\t\tsubobjs = %llu\n",
 477                     (u_longlong_t)bpop->bpo_subobjs);
 478                 (void) printf("\t\tnum_subobjs = %llu\n",
 479                     (u_longlong_t)bpop->bpo_num_subobjs);
 480         }
 481
 482         if (dump_opt['d'] < 5)
 483                 return;
 484
 485         for (i = 0; i < bpop->bpo_num_blkptrs; i++) {
 486                 char blkbuf[BP_SPRINTF_LEN];
 487                 blkptr_t bp;
 488
 489                 int err = dmu_read(os, object,
 490                     i * sizeof (bp), sizeof (bp), &bp, 0);
 491                 if (err != 0) {
 492                         (void) printf("got error %u from dmu_read\n", err);
 493                         break;
 494                 }
 495                 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp);
 496                 (void) printf("\t%s\n", blkbuf);
 497         }
 498 }
 499
 500 /* ARGSUSED */
 501 static void
 502 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size)
 503 {
 504         dmu_object_info_t doi;
 505         int64_t i;
 506
 507         VERIFY0(dmu_object_info(os, object, &doi));
 508         uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP);
 509
 510         int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0);
 511         if (err != 0) {
 512                 (void) printf("got error %u from dmu_read\n", err);
 513                 kmem_free(subobjs, doi.doi_max_offset);
 514                 return;
 515         }
 516
 517         int64_t last_nonzero = -1;
 518         for (i = 0; i < doi.doi_max_offset / 8; i++) {
 519                 if (subobjs[i] != 0)
 520                         last_nonzero = i;
 521         }
 522
 523         for (i = 0; i <= last_nonzero; i++) {
 524                 (void) printf("\t%llu\n", (u_longlong_t)subobjs[i]);
 525         }
 526         kmem_free(subobjs, doi.doi_max_offset);
 527 }
 528
 529 /*ARGSUSED*/
 530 static void
 531 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 532 {
 533         dump_zap_stats(os, object);
 534         /* contents are printed elsewhere, properly decoded */
 535 }
 536
 537 /*ARGSUSED*/
 538 static void
 539 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 540 {
 541         zap_cursor_t zc;
 542         zap_attribute_t attr;
 543
 544         dump_zap_stats(os, object);
 545         (void) printf("\n");
 546
 547         for (zap_cursor_init(&zc, os, object);
 548             zap_cursor_retrieve(&zc, &attr) == 0;
 549             zap_cursor_advance(&zc)) {
 550                 (void) printf("\t\t%s = ", attr.za_name);
 551                 if (attr.za_num_integers == 0) {
 552                         (void) printf("\n");
 553                         continue;
 554                 }
 555                 (void) printf(" %llx : [%d:%d:%d]\n",
 556                     (u_longlong_t)attr.za_first_integer,
 557                     (int)ATTR_LENGTH(attr.za_first_integer),
 558                     (int)ATTR_BSWAP(attr.za_first_integer),
 559                     (int)ATTR_NUM(attr.za_first_integer));
 560         }
 561         zap_cursor_fini(&zc);
 562 }
 563
 564 /*ARGSUSED*/
 565 static void
 566 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 567 {
 568         zap_cursor_t zc;
 569         zap_attribute_t attr;
 570         uint16_t *layout_attrs;
 571         int i;
 572
 573         dump_zap_stats(os, object);
 574         (void) printf("\n");
 575
 576         for (zap_cursor_init(&zc, os, object);
 577             zap_cursor_retrieve(&zc, &attr) == 0;
 578             zap_cursor_advance(&zc)) {
 579                 (void) printf("\t\t%s = [", attr.za_name);
 580                 if (attr.za_num_integers == 0) {
 581                         (void) printf("\n");
 582                         continue;
 583                 }
 584
 585                 VERIFY(attr.za_integer_length == 2);
 586                 layout_attrs = umem_zalloc(attr.za_num_integers *
 587                     attr.za_integer_length, UMEM_NOFAIL);
 588
 589                 VERIFY(zap_lookup(os, object, attr.za_name,
 590                     attr.za_integer_length,
 591                     attr.za_num_integers, layout_attrs) == 0);
 592
 593                 for (i = 0; i != attr.za_num_integers; i++)
 594                         (void) printf(" %d ", (int)layout_attrs[i]);
 595                 (void) printf("]\n");
 596                 umem_free(layout_attrs,
 597                     attr.za_num_integers * attr.za_integer_length);
 598         }
 599         zap_cursor_fini(&zc);
 600 }
 601
 602 /*ARGSUSED*/
 603 static void
 604 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 605 {
 606         zap_cursor_t zc;
 607         zap_attribute_t attr;
 608         const char *typenames[] = {
 609                 /* 0 */ "not specified",
 610                 /* 1 */ "FIFO",
 611                 /* 2 */ "Character Device",
 612                 /* 3 */ "3 (invalid)",
 613                 /* 4 */ "Directory",
 614                 /* 5 */ "5 (invalid)",
 615                 /* 6 */ "Block Device",
 616                 /* 7 */ "7 (invalid)",
 617                 /* 8 */ "Regular File",
 618                 /* 9 */ "9 (invalid)",
 619                 /* 10 */ "Symbolic Link",
 620                 /* 11 */ "11 (invalid)",
 621                 /* 12 */ "Socket",
 622                 /* 13 */ "Door",
 623                 /* 14 */ "Event Port",
 624                 /* 15 */ "15 (invalid)",
 625         };
 626
 627         dump_zap_stats(os, object);
 628         (void) printf("\n");
 629
 630         for (zap_cursor_init(&zc, os, object);
 631             zap_cursor_retrieve(&zc, &attr) == 0;
 632             zap_cursor_advance(&zc)) {
 633                 (void) printf("\t\t%s = %lld (type: %s)\n",
 634                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 635                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 636         }
 637         zap_cursor_fini(&zc);
 638 }
 639
 640 int
 641 get_dtl_refcount(vdev_t *vd)
 642 {
 643         int refcount = 0;
 644         int c;
 645
 646         if (vd->vdev_ops->vdev_op_leaf) {
 647                 space_map_t *sm = vd->vdev_dtl_sm;
 648
 649                 if (sm != NULL &&
 650                     sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 651                         return (1);
 652                 return (0);
 653         }
 654
 655         for (c = 0; c < vd->vdev_children; c++)
 656                 refcount += get_dtl_refcount(vd->vdev_child[c]);
 657         return (refcount);
 658 }
 659
 660 int
 661 get_metaslab_refcount(vdev_t *vd)
 662 {
 663         int refcount = 0;
 664         int c, m;
 665
 666         if (vd->vdev_top == vd && !vd->vdev_removing) {
 667                 for (m = 0; m < vd->vdev_ms_count; m++) {
 668                         space_map_t *sm = vd->vdev_ms[m]->ms_sm;
 669
 670                         if (sm != NULL &&
 671                             sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 672                                 refcount++;
 673                 }
 674         }
 675         for (c = 0; c < vd->vdev_children; c++)
 676                 refcount += get_metaslab_refcount(vd->vdev_child[c]);
 677
 678         return (refcount);
 679 }
 680
 681 static int
 682 verify_spacemap_refcounts(spa_t *spa)
 683 {
 684         uint64_t expected_refcount = 0;
 685         uint64_t actual_refcount;
 686
 687         (void) feature_get_refcount(spa,
 688             &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
 689             &expected_refcount);
 690         actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
 691         actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
 692
 693         if (expected_refcount != actual_refcount) {
 694                 (void) printf("space map refcount mismatch: expected %lld != "
 695                     "actual %lld\n",
 696                     (longlong_t)expected_refcount,
 697                     (longlong_t)actual_refcount);
 698                 return (2);
 699         }
 700         return (0);
 701 }
 702
 703 static void
 704 dump_spacemap(objset_t *os, space_map_t *sm)
 705 {
 706         uint64_t alloc, offset, entry;
 707         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 708                             "INVALID", "INVALID", "INVALID", "INVALID" };
 709
 710         if (sm == NULL)
 711                 return;
 712
 713         /*
 714          * Print out the freelist entries in both encoded and decoded form.
 715          */
 716         alloc = 0;
 717         for (offset = 0; offset < space_map_length(sm);
 718             offset += sizeof (entry)) {
 719                 uint8_t mapshift = sm->sm_shift;
 720
 721                 VERIFY0(dmu_read(os, space_map_object(sm), offset,
 722                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 723                 if (SM_DEBUG_DECODE(entry)) {
 724
 725                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 726                             (u_longlong_t)(offset / sizeof (entry)),
 727                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 728                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 729                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 730                 } else {
 731                         (void) printf("\t    [%6llu]    %c  range:"
 732                             " %010llx-%010llx  size: %06llx\n",
 733                             (u_longlong_t)(offset / sizeof (entry)),
 734                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 735                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 736                             mapshift) + sm->sm_start),
 737                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 738                             mapshift) + sm->sm_start +
 739                             (SM_RUN_DECODE(entry) << mapshift)),
 740                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 741                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 742                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 743                         else
 744                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 745                 }
 746         }
 747         if (alloc != space_map_allocated(sm)) {
 748                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 749                     "with space map summary (%llu)\n",
 750                     (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
 751         }
 752 }
 753
 754 static void
 755 dump_metaslab_stats(metaslab_t *msp)
 756 {
 757         char maxbuf[32];
 758         range_tree_t *rt = msp->ms_tree;
 759         avl_tree_t *t = &msp->ms_size_tree;
 760         int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
 761
 762         zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
 763
 764         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 765             "segments", avl_numnodes(t), "maxsize", maxbuf,
 766             "freepct", free_pct);
 767         (void) printf("\tIn-memory histogram:\n");
 768         dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 769 }
 770
 771 static void
 772 dump_metaslab(metaslab_t *msp)
 773 {
 774         vdev_t *vd = msp->ms_group->mg_vd;
 775         spa_t *spa = vd->vdev_spa;
 776         space_map_t *sm = msp->ms_sm;
 777         char freebuf[32];
 778
 779         zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
 780
 781         (void) printf(
 782             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 783             (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
 784             (u_longlong_t)space_map_object(sm), freebuf);
 785
 786         if (dump_opt['m'] > 2 && !dump_opt['L']) {
 787                 mutex_enter(&msp->ms_lock);
 788                 metaslab_load_wait(msp);
 789                 if (!msp->ms_loaded) {
 790                         VERIFY0(metaslab_load(msp));
 791                         range_tree_stat_verify(msp->ms_tree);
 792                 }
 793                 dump_metaslab_stats(msp);
 794                 metaslab_unload(msp);
 795                 mutex_exit(&msp->ms_lock);
 796         }
 797
 798         if (dump_opt['m'] > 1 && sm != NULL &&
 799             spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
 800                 /*
 801                  * The space map histogram represents free space in chunks
 802                  * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
 803                  */
 804                 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
 805                     (u_longlong_t)msp->ms_fragmentation);
 806                 dump_histogram(sm->sm_phys->smp_histogram,
 807                     SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
 808         }
 809
 810         if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
 811                 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
 812
 813                 mutex_enter(&msp->ms_lock);
 814                 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
 815                 mutex_exit(&msp->ms_lock);
 816         }
 817 }
 818
 819 static void
 820 print_vdev_metaslab_header(vdev_t *vd)
 821 {
 822         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 823             (u_longlong_t)vd->vdev_id,
 824             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 825             "offset", "spacemap", "free");
 826         (void) printf("\t%15s   %19s   %15s   %10s\n",
 827             "---------------", "-------------------",
 828             "---------------", "-------------");
 829 }
 830
 831 static void
 832 dump_metaslab_groups(spa_t *spa)
 833 {
 834         vdev_t *rvd = spa->spa_root_vdev;
 835         metaslab_class_t *mc = spa_normal_class(spa);
 836         uint64_t fragmentation;
 837         int c;
 838
 839         metaslab_class_histogram_verify(mc);
 840
 841         for (c = 0; c < rvd->vdev_children; c++) {
 842                 vdev_t *tvd = rvd->vdev_child[c];
 843                 metaslab_group_t *mg = tvd->vdev_mg;
 844
 845                 if (mg->mg_class != mc)
 846                         continue;
 847
 848                 metaslab_group_histogram_verify(mg);
 849                 mg->mg_fragmentation = metaslab_group_fragmentation(mg);
 850
 851                 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
 852                     "fragmentation",
 853                     (u_longlong_t)tvd->vdev_id,
 854                     (u_longlong_t)tvd->vdev_ms_count);
 855                 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
 856                         (void) printf("%3s\n", "-");
 857                 } else {
 858                         (void) printf("%3llu%%\n",
 859                             (u_longlong_t)mg->mg_fragmentation);
 860                 }
 861                 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 862         }
 863
 864         (void) printf("\tpool %s\tfragmentation", spa_name(spa));
 865         fragmentation = metaslab_class_fragmentation(mc);
 866         if (fragmentation == ZFS_FRAG_INVALID)
 867                 (void) printf("\t%3s\n", "-");
 868         else
 869                 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
 870         dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 871 }
 872
 873 static void
 874 dump_metaslabs(spa_t *spa)
 875 {
 876         vdev_t *vd, *rvd = spa->spa_root_vdev;
 877         uint64_t m, c = 0, children = rvd->vdev_children;
 878
 879         (void) printf("\nMetaslabs:\n");
 880
 881         if (!dump_opt['d'] && zopt_objects > 0) {
 882                 c = zopt_object[0];
 883
 884                 if (c >= children)
 885                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 886
 887                 if (zopt_objects > 1) {
 888                         vd = rvd->vdev_child[c];
 889                         print_vdev_metaslab_header(vd);
 890
 891                         for (m = 1; m < zopt_objects; m++) {
 892                                 if (zopt_object[m] < vd->vdev_ms_count)
 893                                         dump_metaslab(
 894                                             vd->vdev_ms[zopt_object[m]]);
 895                                 else
 896                                         (void) fprintf(stderr, "bad metaslab "
 897                                             "number %llu\n",
 898                                             (u_longlong_t)zopt_object[m]);
 899                         }
 900                         (void) printf("\n");
 901                         return;
 902                 }
 903                 children = c + 1;
 904         }
 905         for (; c < children; c++) {
 906                 vd = rvd->vdev_child[c];
 907                 print_vdev_metaslab_header(vd);
 908
 909                 for (m = 0; m < vd->vdev_ms_count; m++)
 910                         dump_metaslab(vd->vdev_ms[m]);
 911                 (void) printf("\n");
 912         }
 913 }
 914
 915 static void
 916 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 917 {
 918         const ddt_phys_t *ddp = dde->dde_phys;
 919         const ddt_key_t *ddk = &dde->dde_key;
 920         char *types[4] = { "ditto", "single", "double", "triple" };
 921         char blkbuf[BP_SPRINTF_LEN];
 922         blkptr_t blk;
 923         int p;
 924
 925         for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 926                 if (ddp->ddp_phys_birth == 0)
 927                         continue;
 928                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 929                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
 930                 (void) printf("index %llx refcnt %llu %s %s\n",
 931                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 932                     types[p], blkbuf);
 933         }
 934 }
 935
 936 static void
 937 dump_dedup_ratio(const ddt_stat_t *dds)
 938 {
 939         double rL, rP, rD, D, dedup, compress, copies;
 940
 941         if (dds->dds_blocks == 0)
 942                 return;
 943
 944         rL = (double)dds->dds_ref_lsize;
 945         rP = (double)dds->dds_ref_psize;
 946         rD = (double)dds->dds_ref_dsize;
 947         D = (double)dds->dds_dsize;
 948
 949         dedup = rD / D;
 950         compress = rL / rP;
 951         copies = rD / rP;
 952
 953         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 954             "dedup * compress / copies = %.2f\n\n",
 955             dedup, compress, copies, dedup * compress / copies);
 956 }
 957
 958 static void
 959 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 960 {
 961         char name[DDT_NAMELEN];
 962         ddt_entry_t dde;
 963         uint64_t walk = 0;
 964         dmu_object_info_t doi;
 965         uint64_t count, dspace, mspace;
 966         int error;
 967
 968         error = ddt_object_info(ddt, type, class, &doi);
 969
 970         if (error == ENOENT)
 971                 return;
 972         ASSERT(error == 0);
 973
 974         error = ddt_object_count(ddt, type, class, &count);
 975         ASSERT(error == 0);
 976         if (count == 0)
 977                 return;
 978
 979         dspace = doi.doi_physical_blocks_512 << 9;
 980         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 981
 982         ddt_object_name(ddt, type, class, name);
 983
 984         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 985             name,
 986             (u_longlong_t)count,
 987             (u_longlong_t)(dspace / count),
 988             (u_longlong_t)(mspace / count));
 989
 990         if (dump_opt['D'] < 3)
 991                 return;
 992
 993         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 994
 995         if (dump_opt['D'] < 4)
 996                 return;
 997
 998         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 999                 return;
1000
1001         (void) printf("%s contents:\n\n", name);
1002
1003         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
1004                 dump_dde(ddt, &dde, walk);
1005
1006         ASSERT(error == ENOENT);
1007
1008         (void) printf("\n");
1009 }
1010
1011 static void
1012 dump_all_ddts(spa_t *spa)
1013 {
1014         ddt_histogram_t ddh_total;
1015         ddt_stat_t dds_total;
1016         enum zio_checksum c;
1017         enum ddt_type type;
1018         enum ddt_class class;
1019
1020         bzero(&ddh_total, sizeof (ddt_histogram_t));
1021         bzero(&dds_total, sizeof (ddt_stat_t));
1022
1023         for (c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
1024                 ddt_t *ddt = spa->spa_ddt[c];
1025                 for (type = 0; type < DDT_TYPES; type++) {
1026                         for (class = 0; class < DDT_CLASSES;
1027                             class++) {
1028                                 dump_ddt(ddt, type, class);
1029                         }
1030                 }
1031         }
1032
1033         ddt_get_dedup_stats(spa, &dds_total);
1034
1035         if (dds_total.dds_blocks == 0) {
1036                 (void) printf("All DDTs are empty\n");
1037                 return;
1038         }
1039
1040         (void) printf("\n");
1041
1042         if (dump_opt['D'] > 1) {
1043                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
1044                 ddt_get_dedup_histogram(spa, &ddh_total);
1045                 zpool_dump_ddt(&dds_total, &ddh_total);
1046         }
1047
1048         dump_dedup_ratio(&dds_total);
1049 }
1050
1051 static void
1052 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
1053 {
1054         char *prefix = arg;
1055
1056         (void) printf("%s [%llu,%llu) length %llu\n",
1057             prefix,
1058             (u_longlong_t)start,
1059             (u_longlong_t)(start + size),
1060             (u_longlong_t)(size));
1061 }
1062
1063 static void
1064 dump_dtl(vdev_t *vd, int indent)
1065 {
1066         spa_t *spa = vd->vdev_spa;
1067         boolean_t required;
1068         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
1069         char prefix[256];
1070         int c, t;
1071
1072         spa_vdev_state_enter(spa, SCL_NONE);
1073         required = vdev_dtl_required(vd);
1074         (void) spa_vdev_state_exit(spa, NULL, 0);
1075
1076         if (indent == 0)
1077                 (void) printf("\nDirty time logs:\n\n");
1078
1079         (void) printf("\t%*s%s [%s]\n", indent, "",
1080             vd->vdev_path ? vd->vdev_path :
1081             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
1082             required ? "DTL-required" : "DTL-expendable");
1083
1084         for (t = 0; t < DTL_TYPES; t++) {
1085                 range_tree_t *rt = vd->vdev_dtl[t];
1086                 if (range_tree_space(rt) == 0)
1087                         continue;
1088                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
1089                     indent + 2, "", name[t]);
1090                 mutex_enter(rt->rt_lock);
1091                 range_tree_walk(rt, dump_dtl_seg, prefix);
1092                 mutex_exit(rt->rt_lock);
1093                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
1094                         dump_spacemap(spa->spa_meta_objset,
1095                             vd->vdev_dtl_sm);
1096         }
1097
1098         for (c = 0; c < vd->vdev_children; c++)
1099                 dump_dtl(vd->vdev_child[c], indent + 4);
1100 }
1101
1102 static void
1103 dump_history(spa_t *spa)
1104 {
1105         nvlist_t **events = NULL;
1106         char *buf;
1107         uint64_t resid, len, off = 0;
1108         uint_t num = 0;
1109         int error;
1110         time_t tsec;
1111         struct tm t;
1112         char tbuf[30];
1113         char internalstr[MAXPATHLEN];
1114         int i;
1115
1116         if ((buf = malloc(SPA_OLD_MAXBLOCKSIZE)) == NULL) {
1117                 (void) fprintf(stderr, "%s: unable to allocate I/O buffer\n",
1118                     __func__);
1119                 return;
1120         }
1121
1122         do {
1123                 len = SPA_OLD_MAXBLOCKSIZE;
1124
1125                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
1126                         (void) fprintf(stderr, "Unable to read history: "
1127                             "error %d\n", error);
1128                         free(buf);
1129                         return;
1130                 }
1131
1132                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1133                         break;
1134
1135                 off -= resid;
1136         } while (len != 0);
1137
1138         (void) printf("\nHistory:\n");
1139         for (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],
1163                             (longlong_t)txg, 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         free(buf);
1180 }
1181
1182 /*ARGSUSED*/
1183 static void
1184 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1185 {
1186 }
1187
1188 static uint64_t
1189 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1190     const zbookmark_phys_t *zb)
1191 {
1192         if (dnp == NULL) {
1193                 ASSERT(zb->zb_level < 0);
1194                 if (zb->zb_object == 0)
1195                         return (zb->zb_blkid);
1196                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1197         }
1198
1199         ASSERT(zb->zb_level >= 0);
1200
1201         return ((zb->zb_blkid <<
1202             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1203             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1204 }
1205
1206 static void
1207 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1208 {
1209         const dva_t *dva = bp->blk_dva;
1210         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1211         int i;
1212
1213         if (dump_opt['b'] >= 6) {
1214                 snprintf_blkptr(blkbuf, buflen, bp);
1215                 return;
1216         }
1217
1218         if (BP_IS_EMBEDDED(bp)) {
1219                 (void) sprintf(blkbuf,
1220                     "EMBEDDED et=%u %llxL/%llxP B=%llu",
1221                     (int)BPE_GET_ETYPE(bp),
1222                     (u_longlong_t)BPE_GET_LSIZE(bp),
1223                     (u_longlong_t)BPE_GET_PSIZE(bp),
1224                     (u_longlong_t)bp->blk_birth);
1225                 return;
1226         }
1227
1228         blkbuf[0] = '\0';
1229
1230         for (i = 0; i < ndvas; i++)
1231                 (void) snprintf(blkbuf + strlen(blkbuf),
1232                     buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1233                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1234                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1235                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1236
1237         if (BP_IS_HOLE(bp)) {
1238                 (void) snprintf(blkbuf + strlen(blkbuf),
1239                     buflen - strlen(blkbuf),
1240                     "%llxL B=%llu",
1241                     (u_longlong_t)BP_GET_LSIZE(bp),
1242                     (u_longlong_t)bp->blk_birth);
1243         } else {
1244                 (void) snprintf(blkbuf + strlen(blkbuf),
1245                     buflen - strlen(blkbuf),
1246                     "%llxL/%llxP F=%llu B=%llu/%llu",
1247                     (u_longlong_t)BP_GET_LSIZE(bp),
1248                     (u_longlong_t)BP_GET_PSIZE(bp),
1249                     (u_longlong_t)BP_GET_FILL(bp),
1250                     (u_longlong_t)bp->blk_birth,
1251                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1252         }
1253 }
1254
1255 static void
1256 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1257     const dnode_phys_t *dnp)
1258 {
1259         char blkbuf[BP_SPRINTF_LEN];
1260         int l;
1261
1262         if (!BP_IS_EMBEDDED(bp)) {
1263                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1264                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1265         }
1266
1267         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1268
1269         ASSERT(zb->zb_level >= 0);
1270
1271         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1272                 if (l == zb->zb_level) {
1273                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1274                 } else {
1275                         (void) printf(" ");
1276                 }
1277         }
1278
1279         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1280         (void) printf("%s\n", blkbuf);
1281 }
1282
1283 static int
1284 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1285     blkptr_t *bp, const zbookmark_phys_t *zb)
1286 {
1287         int err = 0;
1288
1289         if (bp->blk_birth == 0)
1290                 return (0);
1291
1292         print_indirect(bp, zb, dnp);
1293
1294         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1295                 arc_flags_t flags = ARC_FLAG_WAIT;
1296                 int i;
1297                 blkptr_t *cbp;
1298                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1299                 arc_buf_t *buf;
1300                 uint64_t fill = 0;
1301
1302                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1303                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1304                 if (err)
1305                         return (err);
1306                 ASSERT(buf->b_data);
1307
1308                 /* recursively visit blocks below this */
1309                 cbp = buf->b_data;
1310                 for (i = 0; i < epb; i++, cbp++) {
1311                         zbookmark_phys_t czb;
1312
1313                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1314                             zb->zb_level - 1,
1315                             zb->zb_blkid * epb + i);
1316                         err = visit_indirect(spa, dnp, cbp, &czb);
1317                         if (err)
1318                                 break;
1319                         fill += BP_GET_FILL(cbp);
1320                 }
1321                 if (!err)
1322                         ASSERT3U(fill, ==, BP_GET_FILL(bp));
1323                 arc_buf_destroy(buf, &buf);
1324         }
1325
1326         return (err);
1327 }
1328
1329 /*ARGSUSED*/
1330 static void
1331 dump_indirect(dnode_t *dn)
1332 {
1333         dnode_phys_t *dnp = dn->dn_phys;
1334         int j;
1335         zbookmark_phys_t czb;
1336
1337         (void) printf("Indirect blocks:\n");
1338
1339         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1340             dn->dn_object, dnp->dn_nlevels - 1, 0);
1341         for (j = 0; j < dnp->dn_nblkptr; j++) {
1342                 czb.zb_blkid = j;
1343                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1344                     &dnp->dn_blkptr[j], &czb);
1345         }
1346
1347         (void) printf("\n");
1348 }
1349
1350 /*ARGSUSED*/
1351 static void
1352 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1353 {
1354         dsl_dir_phys_t *dd = data;
1355         time_t crtime;
1356         char nice[32];
1357
1358         if (dd == NULL)
1359                 return;
1360
1361         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1362
1363         crtime = dd->dd_creation_time;
1364         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1365         (void) printf("\t\thead_dataset_obj = %llu\n",
1366             (u_longlong_t)dd->dd_head_dataset_obj);
1367         (void) printf("\t\tparent_dir_obj = %llu\n",
1368             (u_longlong_t)dd->dd_parent_obj);
1369         (void) printf("\t\torigin_obj = %llu\n",
1370             (u_longlong_t)dd->dd_origin_obj);
1371         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1372             (u_longlong_t)dd->dd_child_dir_zapobj);
1373         zdb_nicenum(dd->dd_used_bytes, nice);
1374         (void) printf("\t\tused_bytes = %s\n", nice);
1375         zdb_nicenum(dd->dd_compressed_bytes, nice);
1376         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1377         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1378         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1379         zdb_nicenum(dd->dd_quota, nice);
1380         (void) printf("\t\tquota = %s\n", nice);
1381         zdb_nicenum(dd->dd_reserved, nice);
1382         (void) printf("\t\treserved = %s\n", nice);
1383         (void) printf("\t\tprops_zapobj = %llu\n",
1384             (u_longlong_t)dd->dd_props_zapobj);
1385         (void) printf("\t\tdeleg_zapobj = %llu\n",
1386             (u_longlong_t)dd->dd_deleg_zapobj);
1387         (void) printf("\t\tflags = %llx\n",
1388             (u_longlong_t)dd->dd_flags);
1389
1390 #define DO(which) \
1391         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1392         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1393         DO(HEAD);
1394         DO(SNAP);
1395         DO(CHILD);
1396         DO(CHILD_RSRV);
1397         DO(REFRSRV);
1398 #undef DO
1399 }
1400
1401 /*ARGSUSED*/
1402 static void
1403 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1404 {
1405         dsl_dataset_phys_t *ds = data;
1406         time_t crtime;
1407         char used[32], compressed[32], uncompressed[32], unique[32];
1408         char blkbuf[BP_SPRINTF_LEN];
1409
1410         if (ds == NULL)
1411                 return;
1412
1413         ASSERT(size == sizeof (*ds));
1414         crtime = ds->ds_creation_time;
1415         zdb_nicenum(ds->ds_referenced_bytes, used);
1416         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1417         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1418         zdb_nicenum(ds->ds_unique_bytes, unique);
1419         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1420
1421         (void) printf("\t\tdir_obj = %llu\n",
1422             (u_longlong_t)ds->ds_dir_obj);
1423         (void) printf("\t\tprev_snap_obj = %llu\n",
1424             (u_longlong_t)ds->ds_prev_snap_obj);
1425         (void) printf("\t\tprev_snap_txg = %llu\n",
1426             (u_longlong_t)ds->ds_prev_snap_txg);
1427         (void) printf("\t\tnext_snap_obj = %llu\n",
1428             (u_longlong_t)ds->ds_next_snap_obj);
1429         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1430             (u_longlong_t)ds->ds_snapnames_zapobj);
1431         (void) printf("\t\tnum_children = %llu\n",
1432             (u_longlong_t)ds->ds_num_children);
1433         (void) printf("\t\tuserrefs_obj = %llu\n",
1434             (u_longlong_t)ds->ds_userrefs_obj);
1435         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1436         (void) printf("\t\tcreation_txg = %llu\n",
1437             (u_longlong_t)ds->ds_creation_txg);
1438         (void) printf("\t\tdeadlist_obj = %llu\n",
1439             (u_longlong_t)ds->ds_deadlist_obj);
1440         (void) printf("\t\tused_bytes = %s\n", used);
1441         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1442         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1443         (void) printf("\t\tunique = %s\n", unique);
1444         (void) printf("\t\tfsid_guid = %llu\n",
1445             (u_longlong_t)ds->ds_fsid_guid);
1446         (void) printf("\t\tguid = %llu\n",
1447             (u_longlong_t)ds->ds_guid);
1448         (void) printf("\t\tflags = %llx\n",
1449             (u_longlong_t)ds->ds_flags);
1450         (void) printf("\t\tnext_clones_obj = %llu\n",
1451             (u_longlong_t)ds->ds_next_clones_obj);
1452         (void) printf("\t\tprops_obj = %llu\n",
1453             (u_longlong_t)ds->ds_props_obj);
1454         (void) printf("\t\tbp = %s\n", blkbuf);
1455 }
1456
1457 /* ARGSUSED */
1458 static int
1459 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1460 {
1461         char blkbuf[BP_SPRINTF_LEN];
1462
1463         if (bp->blk_birth != 0) {
1464                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1465                 (void) printf("\t%s\n", blkbuf);
1466         }
1467         return (0);
1468 }
1469
1470 static void
1471 dump_bptree(objset_t *os, uint64_t obj, char *name)
1472 {
1473         char bytes[32];
1474         bptree_phys_t *bt;
1475         dmu_buf_t *db;
1476
1477         if (dump_opt['d'] < 3)
1478                 return;
1479
1480         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1481         bt = db->db_data;
1482         zdb_nicenum(bt->bt_bytes, bytes);
1483         (void) printf("\n    %s: %llu datasets, %s\n",
1484             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1485         dmu_buf_rele(db, FTAG);
1486
1487         if (dump_opt['d'] < 5)
1488                 return;
1489
1490         (void) printf("\n");
1491
1492         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1493 }
1494
1495 /* ARGSUSED */
1496 static int
1497 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1498 {
1499         char blkbuf[BP_SPRINTF_LEN];
1500
1501         ASSERT(bp->blk_birth != 0);
1502         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1503         (void) printf("\t%s\n", blkbuf);
1504         return (0);
1505 }
1506
1507 static void
1508 dump_full_bpobj(bpobj_t *bpo, char *name, int indent)
1509 {
1510         char bytes[32];
1511         char comp[32];
1512         char uncomp[32];
1513         uint64_t i;
1514
1515         if (dump_opt['d'] < 3)
1516                 return;
1517
1518         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1519         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1520                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1521                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1522                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1523                     "%llu subobjs in object, %llu, %s (%s/%s comp)\n",
1524                     indent * 8, name,
1525                     (u_longlong_t)bpo->bpo_object,
1526                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1527                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1528                     (u_longlong_t)bpo->bpo_phys->bpo_subobjs,
1529                     bytes, comp, uncomp);
1530
1531                 for (i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1532                         uint64_t subobj;
1533                         bpobj_t subbpo;
1534                         int error;
1535                         VERIFY0(dmu_read(bpo->bpo_os,
1536                             bpo->bpo_phys->bpo_subobjs,
1537                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1538                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1539                         if (error != 0) {
1540                                 (void) printf("ERROR %u while trying to open "
1541                                     "subobj id %llu\n",
1542                                     error, (u_longlong_t)subobj);
1543                                 continue;
1544                         }
1545                         dump_full_bpobj(&subbpo, "subobj", indent + 1);
1546                         bpobj_close(&subbpo);
1547                 }
1548         } else {
1549                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1550                     indent * 8, name,
1551                     (u_longlong_t)bpo->bpo_object,
1552                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1553                     bytes);
1554         }
1555
1556         if (dump_opt['d'] < 5)
1557                 return;
1558
1559
1560         if (indent == 0) {
1561                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1562                 (void) printf("\n");
1563         }
1564 }
1565
1566 static void
1567 dump_deadlist(dsl_deadlist_t *dl)
1568 {
1569         dsl_deadlist_entry_t *dle;
1570         uint64_t unused;
1571         char bytes[32];
1572         char comp[32];
1573         char uncomp[32];
1574
1575         if (dump_opt['d'] < 3)
1576                 return;
1577
1578         if (dl->dl_oldfmt) {
1579                 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1580                 return;
1581         }
1582
1583         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1584         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1585         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1586         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1587             bytes, comp, uncomp);
1588
1589         if (dump_opt['d'] < 4)
1590                 return;
1591
1592         (void) printf("\n");
1593
1594         /* force the tree to be loaded */
1595         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1596
1597         for (dle = avl_first(&dl->dl_tree); dle;
1598             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1599                 if (dump_opt['d'] >= 5) {
1600                         char buf[128];
1601                         (void) snprintf(buf, sizeof (buf),
1602                             "mintxg %llu -> obj %llu",
1603                             (longlong_t)dle->dle_mintxg,
1604                             (longlong_t)dle->dle_bpobj.bpo_object);
1605
1606                         dump_full_bpobj(&dle->dle_bpobj, buf, 0);
1607                 } else {
1608                         (void) printf("mintxg %llu -> obj %llu\n",
1609                             (longlong_t)dle->dle_mintxg,
1610                             (longlong_t)dle->dle_bpobj.bpo_object);
1611
1612                 }
1613         }
1614 }
1615
1616 static avl_tree_t idx_tree;
1617 static avl_tree_t domain_tree;
1618 static boolean_t fuid_table_loaded;
1619 static objset_t *sa_os = NULL;
1620 static sa_attr_type_t *sa_attr_table = NULL;
1621
1622 static int
1623 open_objset(const char *path, dmu_objset_type_t type, void *tag, objset_t **osp)
1624 {
1625         int err;
1626         uint64_t sa_attrs = 0;
1627         uint64_t version = 0;
1628
1629         VERIFY3P(sa_os, ==, NULL);
1630         err = dmu_objset_own(path, type, B_TRUE, tag, osp);
1631         if (err != 0) {
1632                 (void) fprintf(stderr, "failed to own dataset '%s': %s\n", path,
1633                     strerror(err));
1634                 return (err);
1635         }
1636
1637         if (dmu_objset_type(*osp) == DMU_OST_ZFS) {
1638                 (void) zap_lookup(*osp, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1639                     8, 1, &version);
1640                 if (version >= ZPL_VERSION_SA) {
1641                         (void) zap_lookup(*osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1642                             8, 1, &sa_attrs);
1643                 }
1644                 err = sa_setup(*osp, sa_attrs, zfs_attr_table, ZPL_END,
1645                     &sa_attr_table);
1646                 if (err != 0) {
1647                         (void) fprintf(stderr, "sa_setup failed: %s\n",
1648                             strerror(err));
1649                         dmu_objset_disown(*osp, tag);
1650                         *osp = NULL;
1651                 }
1652         }
1653         sa_os = *osp;
1654
1655         return (0);
1656 }
1657
1658 static void
1659 close_objset(objset_t *os, void *tag)
1660 {
1661         VERIFY3P(os, ==, sa_os);
1662         if (os->os_sa != NULL)
1663                 sa_tear_down(os);
1664         dmu_objset_disown(os, tag);
1665         sa_attr_table = NULL;
1666         sa_os = NULL;
1667 }
1668
1669 static void
1670 fuid_table_destroy(void)
1671 {
1672         if (fuid_table_loaded) {
1673                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1674                 fuid_table_loaded = B_FALSE;
1675         }
1676 }
1677
1678 /*
1679  * print uid or gid information.
1680  * For normal POSIX id just the id is printed in decimal format.
1681  * For CIFS files with FUID the fuid is printed in hex followed by
1682  * the domain-rid string.
1683  */
1684 static void
1685 print_idstr(uint64_t id, const char *id_type)
1686 {
1687         if (FUID_INDEX(id)) {
1688                 char *domain;
1689
1690                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1691                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1692                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1693         } else {
1694                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1695         }
1696
1697 }
1698
1699 static void
1700 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1701 {
1702         uint32_t uid_idx, gid_idx;
1703
1704         uid_idx = FUID_INDEX(uid);
1705         gid_idx = FUID_INDEX(gid);
1706
1707         /* Load domain table, if not already loaded */
1708         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1709                 uint64_t fuid_obj;
1710
1711                 /* first find the fuid object.  It lives in the master node */
1712                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1713                     8, 1, &fuid_obj) == 0);
1714                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1715                 (void) zfs_fuid_table_load(os, fuid_obj,
1716                     &idx_tree, &domain_tree);
1717                 fuid_table_loaded = B_TRUE;
1718         }
1719
1720         print_idstr(uid, "uid");
1721         print_idstr(gid, "gid");
1722 }
1723
1724 static void
1725 dump_znode_sa_xattr(sa_handle_t *hdl)
1726 {
1727         nvlist_t *sa_xattr;
1728         nvpair_t *elem = NULL;
1729         int sa_xattr_size = 0;
1730         int sa_xattr_entries = 0;
1731         int error;
1732         char *sa_xattr_packed;
1733
1734         error = sa_size(hdl, sa_attr_table[ZPL_DXATTR], &sa_xattr_size);
1735         if (error || sa_xattr_size == 0)
1736                 return;
1737
1738         sa_xattr_packed = malloc(sa_xattr_size);
1739         if (sa_xattr_packed == NULL)
1740                 return;
1741
1742         error = sa_lookup(hdl, sa_attr_table[ZPL_DXATTR],
1743             sa_xattr_packed, sa_xattr_size);
1744         if (error) {
1745                 free(sa_xattr_packed);
1746                 return;
1747         }
1748
1749         error = nvlist_unpack(sa_xattr_packed, sa_xattr_size, &sa_xattr, 0);
1750         if (error) {
1751                 free(sa_xattr_packed);
1752                 return;
1753         }
1754
1755         while ((elem = nvlist_next_nvpair(sa_xattr, elem)) != NULL)
1756                 sa_xattr_entries++;
1757
1758         (void) printf("\tSA xattrs: %d bytes, %d entries\n\n",
1759             sa_xattr_size, sa_xattr_entries);
1760         while ((elem = nvlist_next_nvpair(sa_xattr, elem)) != NULL) {
1761                 uchar_t *value;
1762                 uint_t cnt, idx;
1763
1764                 (void) printf("\t\t%s = ", nvpair_name(elem));
1765                 nvpair_value_byte_array(elem, &value, &cnt);
1766                 for (idx = 0; idx < cnt; ++idx) {
1767                         if (isprint(value[idx]))
1768                                 (void) putchar(value[idx]);
1769                         else
1770                                 (void) printf("\\%3.3o", value[idx]);
1771                 }
1772                 (void) putchar('\n');
1773         }
1774
1775         nvlist_free(sa_xattr);
1776         free(sa_xattr_packed);
1777 }
1778
1779 /*ARGSUSED*/
1780 static void
1781 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1782 {
1783         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1784         sa_handle_t *hdl;
1785         uint64_t xattr, rdev, gen;
1786         uint64_t uid, gid, mode, fsize, parent, links;
1787         uint64_t pflags;
1788         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1789         time_t z_crtime, z_atime, z_mtime, z_ctime;
1790         sa_bulk_attr_t bulk[12];
1791         int idx = 0;
1792         int error;
1793
1794         VERIFY3P(os, ==, sa_os);
1795         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1796                 (void) printf("Failed to get handle for SA znode\n");
1797                 return;
1798         }
1799
1800         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1801         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1802         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1803             &links, 8);
1804         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1805         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1806             &mode, 8);
1807         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1808             NULL, &parent, 8);
1809         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1810             &fsize, 8);
1811         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1812             acctm, 16);
1813         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1814             modtm, 16);
1815         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1816             crtm, 16);
1817         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1818             chgtm, 16);
1819         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1820             &pflags, 8);
1821
1822         if (sa_bulk_lookup(hdl, bulk, idx)) {
1823                 (void) sa_handle_destroy(hdl);
1824                 return;
1825         }
1826
1827         error = zfs_obj_to_path(os, object, path, sizeof (path));
1828         if (error != 0) {
1829                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1830                     (u_longlong_t)object);
1831         }
1832         if (dump_opt['d'] < 3) {
1833                 (void) printf("\t%s\n", path);
1834                 (void) sa_handle_destroy(hdl);
1835                 return;
1836         }
1837
1838         z_crtime = (time_t)crtm[0];
1839         z_atime = (time_t)acctm[0];
1840         z_mtime = (time_t)modtm[0];
1841         z_ctime = (time_t)chgtm[0];
1842
1843         (void) printf("\tpath   %s\n", path);
1844         dump_uidgid(os, uid, gid);
1845         (void) printf("\tatime  %s", ctime(&z_atime));
1846         (void) printf("\tmtime  %s", ctime(&z_mtime));
1847         (void) printf("\tctime  %s", ctime(&z_ctime));
1848         (void) printf("\tcrtime %s", ctime(&z_crtime));
1849         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1850         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1851         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1852         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1853         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1854         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1855         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1856             sizeof (uint64_t)) == 0)
1857                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1858         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1859             sizeof (uint64_t)) == 0)
1860                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1861         dump_znode_sa_xattr(hdl);
1862         sa_handle_destroy(hdl);
1863 }
1864
1865 /*ARGSUSED*/
1866 static void
1867 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1868 {
1869 }
1870
1871 /*ARGSUSED*/
1872 static void
1873 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1874 {
1875 }
1876
1877 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1878         dump_none,              /* unallocated                  */
1879         dump_zap,               /* object directory             */
1880         dump_uint64,            /* object array                 */
1881         dump_none,              /* packed nvlist                */
1882         dump_packed_nvlist,     /* packed nvlist size           */
1883         dump_none,              /* bpobj                        */
1884         dump_bpobj,             /* bpobj header                 */
1885         dump_none,              /* SPA space map header         */
1886         dump_none,              /* SPA space map                */
1887         dump_none,              /* ZIL intent log               */
1888         dump_dnode,             /* DMU dnode                    */
1889         dump_dmu_objset,        /* DMU objset                   */
1890         dump_dsl_dir,           /* DSL directory                */
1891         dump_zap,               /* DSL directory child map      */
1892         dump_zap,               /* DSL dataset snap map         */
1893         dump_zap,               /* DSL props                    */
1894         dump_dsl_dataset,       /* DSL dataset                  */
1895         dump_znode,             /* ZFS znode                    */
1896         dump_acl,               /* ZFS V0 ACL                   */
1897         dump_uint8,             /* ZFS plain file               */
1898         dump_zpldir,            /* ZFS directory                */
1899         dump_zap,               /* ZFS master node              */
1900         dump_zap,               /* ZFS delete queue             */
1901         dump_uint8,             /* zvol object                  */
1902         dump_zap,               /* zvol prop                    */
1903         dump_uint8,             /* other uint8[]                */
1904         dump_uint64,            /* other uint64[]               */
1905         dump_zap,               /* other ZAP                    */
1906         dump_zap,               /* persistent error log         */
1907         dump_uint8,             /* SPA history                  */
1908         dump_history_offsets,   /* SPA history offsets          */
1909         dump_zap,               /* Pool properties              */
1910         dump_zap,               /* DSL permissions              */
1911         dump_acl,               /* ZFS ACL                      */
1912         dump_uint8,             /* ZFS SYSACL                   */
1913         dump_none,              /* FUID nvlist                  */
1914         dump_packed_nvlist,     /* FUID nvlist size             */
1915         dump_zap,               /* DSL dataset next clones      */
1916         dump_zap,               /* DSL scrub queue              */
1917         dump_zap,               /* ZFS user/group used          */
1918         dump_zap,               /* ZFS user/group quota         */
1919         dump_zap,               /* snapshot refcount tags       */
1920         dump_ddt_zap,           /* DDT ZAP object               */
1921         dump_zap,               /* DDT statistics               */
1922         dump_znode,             /* SA object                    */
1923         dump_zap,               /* SA Master Node               */
1924         dump_sa_attrs,          /* SA attribute registration    */
1925         dump_sa_layouts,        /* SA attribute layouts         */
1926         dump_zap,               /* DSL scrub translations       */
1927         dump_none,              /* fake dedup BP                */
1928         dump_zap,               /* deadlist                     */
1929         dump_none,              /* deadlist hdr                 */
1930         dump_zap,               /* dsl clones                   */
1931         dump_bpobj_subobjs,     /* bpobj subobjs                */
1932         dump_unknown,           /* Unknown type, must be last   */
1933 };
1934
1935 static void
1936 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1937 {
1938         dmu_buf_t *db = NULL;
1939         dmu_object_info_t doi;
1940         dnode_t *dn;
1941         void *bonus = NULL;
1942         size_t bsize = 0;
1943         char iblk[32], dblk[32], lsize[32], asize[32], fill[32], dnsize[32];
1944         char bonus_size[32];
1945         char aux[50];
1946         int error;
1947
1948         if (*print_header) {
1949                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %6s  %5s  %6s  %s\n",
1950                     "Object", "lvl", "iblk", "dblk", "dsize", "dnsize",
1951                     "lsize", "%full", "type");
1952                 *print_header = 0;
1953         }
1954
1955         if (object == 0) {
1956                 dn = DMU_META_DNODE(os);
1957         } else {
1958                 error = dmu_bonus_hold(os, object, FTAG, &db);
1959                 if (error)
1960                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1961                             object, error);
1962                 bonus = db->db_data;
1963                 bsize = db->db_size;
1964                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1965         }
1966         dmu_object_info_from_dnode(dn, &doi);
1967
1968         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1969         zdb_nicenum(doi.doi_data_block_size, dblk);
1970         zdb_nicenum(doi.doi_max_offset, lsize);
1971         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1972         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1973         zdb_nicenum(doi.doi_dnodesize, dnsize);
1974         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1975             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1976             doi.doi_max_offset);
1977
1978         aux[0] = '\0';
1979
1980         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1981                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1982                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1983         }
1984
1985         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1986                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1987                     ZDB_COMPRESS_NAME(doi.doi_compress));
1988         }
1989
1990         (void) printf("%10lld  %3u  %5s  %5s  %5s  %6s  %5s  %6s  %s%s\n",
1991             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1992             asize, dnsize, lsize, fill, zdb_ot_name(doi.doi_type), aux);
1993
1994         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1995                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %5s  %6s  %s\n",
1996                     "", "", "", "", "", "", bonus_size, "bonus",
1997                     zdb_ot_name(doi.doi_bonus_type));
1998         }
1999
2000         if (verbosity >= 4) {
2001                 (void) printf("\tdnode flags: %s%s%s%s\n",
2002                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
2003                     "USED_BYTES " : "",
2004                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
2005                     "USERUSED_ACCOUNTED " : "",
2006                     (dn->dn_phys->dn_flags & DNODE_FLAG_USEROBJUSED_ACCOUNTED) ?
2007                     "USEROBJUSED_ACCOUNTED " : "",
2008                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
2009                     "SPILL_BLKPTR" : "");
2010                 (void) printf("\tdnode maxblkid: %llu\n",
2011                     (longlong_t)dn->dn_phys->dn_maxblkid);
2012
2013                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
2014                     bonus, bsize);
2015                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
2016                 *print_header = 1;
2017         }
2018
2019         if (verbosity >= 5)
2020                 dump_indirect(dn);
2021
2022         if (verbosity >= 5) {
2023                 /*
2024                  * Report the list of segments that comprise the object.
2025                  */
2026                 uint64_t start = 0;
2027                 uint64_t end;
2028                 uint64_t blkfill = 1;
2029                 int minlvl = 1;
2030
2031                 if (dn->dn_type == DMU_OT_DNODE) {
2032                         minlvl = 0;
2033                         blkfill = DNODES_PER_BLOCK;
2034                 }
2035
2036                 for (;;) {
2037                         char segsize[32];
2038                         error = dnode_next_offset(dn,
2039                             0, &start, minlvl, blkfill, 0);
2040                         if (error)
2041                                 break;
2042                         end = start;
2043                         error = dnode_next_offset(dn,
2044                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
2045                         zdb_nicenum(end - start, segsize);
2046                         (void) printf("\t\tsegment [%016llx, %016llx)"
2047                             " size %5s\n", (u_longlong_t)start,
2048                             (u_longlong_t)end, segsize);
2049                         if (error)
2050                                 break;
2051                         start = end;
2052                 }
2053         }
2054
2055         if (db != NULL)
2056                 dmu_buf_rele(db, FTAG);
2057 }
2058
2059 static char *objset_types[DMU_OST_NUMTYPES] = {
2060         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
2061
2062 static void
2063 dump_dir(objset_t *os)
2064 {
2065         dmu_objset_stats_t dds;
2066         uint64_t object, object_count;
2067         uint64_t refdbytes, usedobjs, scratch;
2068         char numbuf[32];
2069         char blkbuf[BP_SPRINTF_LEN + 20];
2070         char osname[ZFS_MAX_DATASET_NAME_LEN];
2071         char *type = "UNKNOWN";
2072         int verbosity = dump_opt['d'];
2073         int print_header = 1;
2074         int i, error;
2075
2076         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
2077         dmu_objset_fast_stat(os, &dds);
2078         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
2079
2080         if (dds.dds_type < DMU_OST_NUMTYPES)
2081                 type = objset_types[dds.dds_type];
2082
2083         if (dds.dds_type == DMU_OST_META) {
2084                 dds.dds_creation_txg = TXG_INITIAL;
2085                 usedobjs = BP_GET_FILL(os->os_rootbp);
2086                 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
2087                     dd_used_bytes;
2088         } else {
2089                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
2090         }
2091
2092         ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
2093
2094         zdb_nicenum(refdbytes, numbuf);
2095
2096         if (verbosity >= 4) {
2097                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
2098                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
2099                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
2100         } else {
2101                 blkbuf[0] = '\0';
2102         }
2103
2104         dmu_objset_name(os, osname);
2105
2106         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
2107             "%s, %llu objects%s\n",
2108             osname, type, (u_longlong_t)dmu_objset_id(os),
2109             (u_longlong_t)dds.dds_creation_txg,
2110             numbuf, (u_longlong_t)usedobjs, blkbuf);
2111
2112         if (zopt_objects != 0) {
2113                 for (i = 0; i < zopt_objects; i++)
2114                         dump_object(os, zopt_object[i], verbosity,
2115                             &print_header);
2116                 (void) printf("\n");
2117                 return;
2118         }
2119
2120         if (dump_opt['i'] != 0 || verbosity >= 2)
2121                 dump_intent_log(dmu_objset_zil(os));
2122
2123         if (dmu_objset_ds(os) != NULL)
2124                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
2125
2126         if (verbosity < 2)
2127                 return;
2128
2129         if (BP_IS_HOLE(os->os_rootbp))
2130                 return;
2131
2132         dump_object(os, 0, verbosity, &print_header);
2133         object_count = 0;
2134         if (DMU_USERUSED_DNODE(os) != NULL &&
2135             DMU_USERUSED_DNODE(os)->dn_type != 0) {
2136                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
2137                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
2138         }
2139
2140         object = 0;
2141         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
2142                 dump_object(os, object, verbosity, &print_header);
2143                 object_count++;
2144         }
2145
2146         ASSERT3U(object_count, ==, usedobjs);
2147
2148         (void) printf("\n");
2149
2150         if (error != ESRCH) {
2151                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
2152                 abort();
2153         }
2154 }
2155
2156 static void
2157 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
2158 {
2159         time_t timestamp = ub->ub_timestamp;
2160
2161         (void) printf("%s", header ? header : "");
2162         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
2163         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
2164         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
2165         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
2166         (void) printf("\ttimestamp = %llu UTC = %s",
2167             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
2168         if (dump_opt['u'] >= 4) {
2169                 char blkbuf[BP_SPRINTF_LEN];
2170                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
2171                 (void) printf("\trootbp = %s\n", blkbuf);
2172         }
2173         (void) printf("%s", footer ? footer : "");
2174 }
2175
2176 static void
2177 dump_config(spa_t *spa)
2178 {
2179         dmu_buf_t *db;
2180         size_t nvsize = 0;
2181         int error = 0;
2182
2183
2184         error = dmu_bonus_hold(spa->spa_meta_objset,
2185             spa->spa_config_object, FTAG, &db);
2186
2187         if (error == 0) {
2188                 nvsize = *(uint64_t *)db->db_data;
2189                 dmu_buf_rele(db, FTAG);
2190
2191                 (void) printf("\nMOS Configuration:\n");
2192                 dump_packed_nvlist(spa->spa_meta_objset,
2193                     spa->spa_config_object, (void *)&nvsize, 1);
2194         } else {
2195                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
2196                     (u_longlong_t)spa->spa_config_object, error);
2197         }
2198 }
2199
2200 static void
2201 dump_cachefile(const char *cachefile)
2202 {
2203         int fd;
2204         struct stat64 statbuf;
2205         char *buf;
2206         nvlist_t *config;
2207
2208         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
2209                 (void) printf("cannot open '%s': %s\n", cachefile,
2210                     strerror(errno));
2211                 exit(1);
2212         }
2213
2214         if (fstat64(fd, &statbuf) != 0) {
2215                 (void) printf("failed to stat '%s': %s\n", cachefile,
2216                     strerror(errno));
2217                 exit(1);
2218         }
2219
2220         if ((buf = malloc(statbuf.st_size)) == NULL) {
2221                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
2222                     (u_longlong_t)statbuf.st_size);
2223                 exit(1);
2224         }
2225
2226         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2227                 (void) fprintf(stderr, "failed to read %llu bytes\n",
2228                     (u_longlong_t)statbuf.st_size);
2229                 exit(1);
2230         }
2231
2232         (void) close(fd);
2233
2234         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2235                 (void) fprintf(stderr, "failed to unpack nvlist\n");
2236                 exit(1);
2237         }
2238
2239         free(buf);
2240
2241         dump_nvlist(config, 0);
2242
2243         nvlist_free(config);
2244 }
2245
2246 /*
2247  * ZFS label nvlist stats
2248  */
2249 typedef struct zdb_nvl_stats {
2250         int             zns_list_count;
2251         int             zns_leaf_count;
2252         size_t          zns_leaf_largest;
2253         size_t          zns_leaf_total;
2254         nvlist_t        *zns_string;
2255         nvlist_t        *zns_uint64;
2256         nvlist_t        *zns_boolean;
2257 } zdb_nvl_stats_t;
2258
2259 static void
2260 collect_nvlist_stats(nvlist_t *nvl, zdb_nvl_stats_t *stats)
2261 {
2262         nvlist_t *list, **array;
2263         nvpair_t *nvp = NULL;
2264         char *name;
2265         uint_t i, items;
2266
2267         stats->zns_list_count++;
2268
2269         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2270                 name = nvpair_name(nvp);
2271
2272                 switch (nvpair_type(nvp)) {
2273                 case DATA_TYPE_STRING:
2274                         fnvlist_add_string(stats->zns_string, name,
2275                             fnvpair_value_string(nvp));
2276                         break;
2277                 case DATA_TYPE_UINT64:
2278                         fnvlist_add_uint64(stats->zns_uint64, name,
2279                             fnvpair_value_uint64(nvp));
2280                         break;
2281                 case DATA_TYPE_BOOLEAN:
2282                         fnvlist_add_boolean(stats->zns_boolean, name);
2283                         break;
2284                 case DATA_TYPE_NVLIST:
2285                         if (nvpair_value_nvlist(nvp, &list) == 0)
2286                                 collect_nvlist_stats(list, stats);
2287                         break;
2288                 case DATA_TYPE_NVLIST_ARRAY:
2289                         if (nvpair_value_nvlist_array(nvp, &array, &items) != 0)
2290                                 break;
2291
2292                         for (i = 0; i < items; i++) {
2293                                 collect_nvlist_stats(array[i], stats);
2294
2295                                 /* collect stats on leaf vdev */
2296                                 if (strcmp(name, "children") == 0) {
2297                                         size_t size;
2298
2299                                         (void) nvlist_size(array[i], &size,
2300                                             NV_ENCODE_XDR);
2301                                         stats->zns_leaf_total += size;
2302                                         if (size > stats->zns_leaf_largest)
2303                                                 stats->zns_leaf_largest = size;
2304                                         stats->zns_leaf_count++;
2305                                 }
2306                         }
2307                         break;
2308                 default:
2309                         (void) printf("skip type %d!\n", (int)nvpair_type(nvp));
2310                 }
2311         }
2312 }
2313
2314 static void
2315 dump_nvlist_stats(nvlist_t *nvl, size_t cap)
2316 {
2317         zdb_nvl_stats_t stats = { 0 };
2318         size_t size, sum = 0, total;
2319         size_t noise;
2320
2321         /* requires nvlist with non-unique names for stat collection */
2322         VERIFY0(nvlist_alloc(&stats.zns_string, 0, 0));
2323         VERIFY0(nvlist_alloc(&stats.zns_uint64, 0, 0));
2324         VERIFY0(nvlist_alloc(&stats.zns_boolean, 0, 0));
2325         VERIFY0(nvlist_size(stats.zns_boolean, &noise, NV_ENCODE_XDR));
2326
2327         (void) printf("\n\nZFS Label NVList Config Stats:\n");
2328
2329         VERIFY0(nvlist_size(nvl, &total, NV_ENCODE_XDR));
2330         (void) printf("  %d bytes used, %d bytes free (using %4.1f%%)\n\n",
2331             (int)total, (int)(cap - total), 100.0 * total / cap);
2332
2333         collect_nvlist_stats(nvl, &stats);
2334
2335         VERIFY0(nvlist_size(stats.zns_uint64, &size, NV_ENCODE_XDR));
2336         size -= noise;
2337         sum += size;
2338         (void) printf("%12s %4d %6d bytes (%5.2f%%)\n", "integers:",
2339             (int)fnvlist_num_pairs(stats.zns_uint64),
2340             (int)size, 100.0 * size / total);
2341
2342         VERIFY0(nvlist_size(stats.zns_string, &size, NV_ENCODE_XDR));
2343         size -= noise;
2344         sum += size;
2345         (void) printf("%12s %4d %6d bytes (%5.2f%%)\n", "strings:",
2346             (int)fnvlist_num_pairs(stats.zns_string),
2347             (int)size, 100.0 * size / total);
2348
2349         VERIFY0(nvlist_size(stats.zns_boolean, &size, NV_ENCODE_XDR));
2350         size -= noise;
2351         sum += size;
2352         (void) printf("%12s %4d %6d bytes (%5.2f%%)\n", "booleans:",
2353             (int)fnvlist_num_pairs(stats.zns_boolean),
2354             (int)size, 100.0 * size / total);
2355
2356         size = total - sum;     /* treat remainder as nvlist overhead */
2357         (void) printf("%12s %4d %6d bytes (%5.2f%%)\n\n", "nvlists:",
2358             stats.zns_list_count, (int)size, 100.0 * size / total);
2359
2360         if (stats.zns_leaf_count > 0) {
2361                 size_t average = stats.zns_leaf_total / stats.zns_leaf_count;
2362
2363                 (void) printf("%12s %4d %6d bytes average\n", "leaf vdevs:",
2364                     stats.zns_leaf_count, (int)average);
2365                 (void) printf("%24d bytes largest\n",
2366                     (int)stats.zns_leaf_largest);
2367
2368                 if (dump_opt['l'] >= 3 && average > 0)
2369                         (void) printf("  space for %d additional leaf vdevs\n",
2370                             (int)((cap - total) / average));
2371         }
2372         (void) printf("\n");
2373
2374         nvlist_free(stats.zns_string);
2375         nvlist_free(stats.zns_uint64);
2376         nvlist_free(stats.zns_boolean);
2377 }
2378
2379 typedef struct cksum_record {
2380         zio_cksum_t cksum;
2381         boolean_t labels[VDEV_LABELS];
2382         avl_node_t link;
2383 } cksum_record_t;
2384
2385 static int
2386 cksum_record_compare(const void *x1, const void *x2)
2387 {
2388         const cksum_record_t *l = (cksum_record_t *)x1;
2389         const cksum_record_t *r = (cksum_record_t *)x2;
2390         int arraysize = ARRAY_SIZE(l->cksum.zc_word);
2391         int difference;
2392
2393         for (int i = 0; i < arraysize; i++) {
2394                 difference = AVL_CMP(l->cksum.zc_word[i], r->cksum.zc_word[i]);
2395                 if (difference)
2396                         break;
2397         }
2398
2399         return (difference);
2400 }
2401
2402 static cksum_record_t *
2403 cksum_record_alloc(zio_cksum_t *cksum, int l)
2404 {
2405         cksum_record_t *rec;
2406
2407         rec = umem_zalloc(sizeof (*rec), UMEM_NOFAIL);
2408         rec->cksum = *cksum;
2409         rec->labels[l] = B_TRUE;
2410
2411         return (rec);
2412 }
2413
2414 static cksum_record_t *
2415 cksum_record_lookup(avl_tree_t *tree, zio_cksum_t *cksum)
2416 {
2417         cksum_record_t lookup = { .cksum = *cksum };
2418         avl_index_t where;
2419
2420         return (avl_find(tree, &lookup, &where));
2421 }
2422
2423 static cksum_record_t *
2424 cksum_record_insert(avl_tree_t *tree, zio_cksum_t *cksum, int l)
2425 {
2426         cksum_record_t *rec;
2427
2428         rec = cksum_record_lookup(tree, cksum);
2429         if (rec) {
2430                 rec->labels[l] = B_TRUE;
2431         } else {
2432                 rec = cksum_record_alloc(cksum, l);
2433                 avl_add(tree, rec);
2434         }
2435
2436         return (rec);
2437 }
2438
2439 static int
2440 first_label(cksum_record_t *rec)
2441 {
2442         for (int i = 0; i < VDEV_LABELS; i++)
2443                 if (rec->labels[i])
2444                         return (i);
2445
2446         return (-1);
2447 }
2448
2449 static void
2450 print_label_numbers(char *prefix, cksum_record_t *rec)
2451 {
2452         printf("%s", prefix);
2453         for (int i = 0; i < VDEV_LABELS; i++)
2454                 if (rec->labels[i] == B_TRUE)
2455                         printf("%d ", i);
2456         printf("\n");
2457 }
2458
2459 #define MAX_UBERBLOCK_COUNT (VDEV_UBERBLOCK_RING >> UBERBLOCK_SHIFT)
2460
2461 typedef struct label {
2462         vdev_label_t label;
2463         nvlist_t *config_nv;
2464         cksum_record_t *config;
2465         cksum_record_t *uberblocks[MAX_UBERBLOCK_COUNT];
2466         boolean_t header_printed;
2467         boolean_t read_failed;
2468 } label_t;
2469
2470 static void
2471 print_label_header(label_t *label, int l)
2472 {
2473
2474         if (dump_opt['q'])
2475                 return;
2476
2477         if (label->header_printed == B_TRUE)
2478                 return;
2479
2480         (void) printf("------------------------------------\n");
2481         (void) printf("LABEL %d\n", l);
2482         (void) printf("------------------------------------\n");
2483
2484         label->header_printed = B_TRUE;
2485 }
2486
2487 static void
2488 dump_config_from_label(label_t *label, size_t buflen, int l)
2489 {
2490         if (dump_opt['q'])
2491                 return;
2492
2493         if ((dump_opt['l'] < 3) && (first_label(label->config) != l))
2494                 return;
2495
2496         print_label_header(label, l);
2497         dump_nvlist(label->config_nv, 4);
2498         print_label_numbers("    labels = ", label->config);
2499
2500         if (dump_opt['l'] >= 2)
2501                 dump_nvlist_stats(label->config_nv, buflen);
2502 }
2503
2504 #define ZDB_MAX_UB_HEADER_SIZE 32
2505
2506 static void
2507 dump_label_uberblocks(label_t *label, uint64_t ashift, int label_num)
2508 {
2509
2510         vdev_t vd;
2511         char header[ZDB_MAX_UB_HEADER_SIZE];
2512
2513         vd.vdev_ashift = ashift;
2514         vd.vdev_top = &vd;
2515
2516         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(&vd); i++) {
2517                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(&vd, i);
2518                 uberblock_t *ub = (void *)((char *)&label->label + uoff);
2519                 cksum_record_t *rec = label->uberblocks[i];
2520
2521                 if (rec == NULL) {
2522                         if (dump_opt['u'] >= 2) {
2523                                 print_label_header(label, label_num);
2524                                 (void) printf("    Uberblock[%d] invalid\n", i);
2525                         }
2526                         continue;
2527                 }
2528
2529                 if ((dump_opt['u'] < 3) && (first_label(rec) != label_num))
2530                         continue;
2531
2532                 print_label_header(label, label_num);
2533                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2534                     "    Uberblock[%d]\n", i);
2535                 dump_uberblock(ub, header, "");
2536                 print_label_numbers("        labels = ", rec);
2537         }
2538 }
2539
2540 static char curpath[PATH_MAX];
2541
2542 /*
2543  * Iterate through the path components, recursively passing
2544  * current one's obj and remaining path until we find the obj
2545  * for the last one.
2546  */
2547 static int
2548 dump_path_impl(objset_t *os, uint64_t obj, char *name)
2549 {
2550         int err;
2551         int header = 1;
2552         uint64_t child_obj;
2553         char *s;
2554         dmu_buf_t *db;
2555         dmu_object_info_t doi;
2556
2557         if ((s = strchr(name, '/')) != NULL)
2558                 *s = '\0';
2559         err = zap_lookup(os, obj, name, 8, 1, &child_obj);
2560
2561         (void) strlcat(curpath, name, sizeof (curpath));
2562
2563         if (err != 0) {
2564                 (void) fprintf(stderr, "failed to lookup %s: %s\n",
2565                     curpath, strerror(err));
2566                 return (err);
2567         }
2568
2569         child_obj = ZFS_DIRENT_OBJ(child_obj);
2570         err = sa_buf_hold(os, child_obj, FTAG, &db);
2571         if (err != 0) {
2572                 (void) fprintf(stderr,
2573                     "failed to get SA dbuf for obj %llu: %s\n",
2574                     (u_longlong_t)child_obj, strerror(err));
2575                 return (EINVAL);
2576         }
2577         dmu_object_info_from_db(db, &doi);
2578         sa_buf_rele(db, FTAG);
2579
2580         if (doi.doi_bonus_type != DMU_OT_SA &&
2581             doi.doi_bonus_type != DMU_OT_ZNODE) {
2582                 (void) fprintf(stderr, "invalid bonus type %d for obj %llu\n",
2583                     doi.doi_bonus_type, (u_longlong_t)child_obj);
2584                 return (EINVAL);
2585         }
2586
2587         if (dump_opt['v'] > 6) {
2588                 (void) printf("obj=%llu %s type=%d bonustype=%d\n",
2589                     (u_longlong_t)child_obj, curpath, doi.doi_type,
2590                     doi.doi_bonus_type);
2591         }
2592
2593         (void) strlcat(curpath, "/", sizeof (curpath));
2594
2595         switch (doi.doi_type) {
2596         case DMU_OT_DIRECTORY_CONTENTS:
2597                 if (s != NULL && *(s + 1) != '\0')
2598                         return (dump_path_impl(os, child_obj, s + 1));
2599                 /*FALLTHROUGH*/
2600         case DMU_OT_PLAIN_FILE_CONTENTS:
2601                 dump_object(os, child_obj, dump_opt['v'], &header);
2602                 return (0);
2603         default:
2604                 (void) fprintf(stderr, "object %llu has non-file/directory "
2605                     "type %d\n", (u_longlong_t)obj, doi.doi_type);
2606                 break;
2607         }
2608
2609         return (EINVAL);
2610 }
2611
2612 /*
2613  * Dump the blocks for the object specified by path inside the dataset.
2614  */
2615 static int
2616 dump_path(char *ds, char *path)
2617 {
2618         int err;
2619         objset_t *os;
2620         uint64_t root_obj;
2621
2622         err = open_objset(ds, DMU_OST_ZFS, FTAG, &os);
2623         if (err != 0)
2624                 return (err);
2625
2626         err = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1, &root_obj);
2627         if (err != 0) {
2628                 (void) fprintf(stderr, "can't lookup root znode: %s\n",
2629                     strerror(err));
2630                 dmu_objset_disown(os, FTAG);
2631                 return (EINVAL);
2632         }
2633
2634         (void) snprintf(curpath, sizeof (curpath), "dataset=%s path=/", ds);
2635
2636         err = dump_path_impl(os, root_obj, path);
2637
2638         close_objset(os, FTAG);
2639         return (err);
2640 }
2641
2642 static int
2643 dump_label(const char *dev)
2644 {
2645         char path[MAXPATHLEN];
2646         label_t labels[VDEV_LABELS];
2647         uint64_t psize, ashift;
2648         struct stat64 statbuf;
2649         boolean_t config_found = B_FALSE;
2650         boolean_t error = B_FALSE;
2651         avl_tree_t config_tree;
2652         avl_tree_t uberblock_tree;
2653         void *node, *cookie;
2654         int fd;
2655
2656         bzero(labels, sizeof (labels));
2657
2658         /*
2659          * Check if we were given absolute path and use it as is.
2660          * Otherwise if the provided vdev name doesn't point to a file,
2661          * try prepending expected disk paths and partition numbers.
2662          */
2663         (void) strlcpy(path, dev, sizeof (path));
2664         if (dev[0] != '/' && stat64(path, &statbuf) != 0) {
2665                 int error;
2666
2667                 error = zfs_resolve_shortname(dev, path, MAXPATHLEN);
2668                 if (error == 0 && zfs_dev_is_whole_disk(path)) {
2669                         if (zfs_append_partition(path, MAXPATHLEN) == -1)
2670                                 error = ENOENT;
2671                 }
2672
2673                 if (error || (stat64(path, &statbuf) != 0)) {
2674                         (void) printf("failed to find device %s, try "
2675                             "specifying absolute path instead\n", dev);
2676                         return (1);
2677                 }
2678         }
2679
2680         if ((fd = open64(path, O_RDONLY)) < 0) {
2681                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2682                 exit(1);
2683         }
2684
2685         if (ioctl(fd, BLKFLSBUF) != 0)
2686                 (void) printf("failed to invalidate cache '%s' : %s\n", path,
2687                     strerror(errno));
2688
2689         if (fstat64_blk(fd, &statbuf) != 0) {
2690                 (void) printf("failed to stat '%s': %s\n", path,
2691                     strerror(errno));
2692                 (void) close(fd);
2693                 exit(1);
2694         }
2695
2696         avl_create(&config_tree, cksum_record_compare,
2697             sizeof (cksum_record_t), offsetof(cksum_record_t, link));
2698         avl_create(&uberblock_tree, cksum_record_compare,
2699             sizeof (cksum_record_t), offsetof(cksum_record_t, link));
2700
2701         psize = statbuf.st_size;
2702         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2703         ashift = SPA_MINBLOCKSHIFT;
2704
2705         /*
2706          * 1. Read the label from disk
2707          * 2. Unpack the configuration and insert in config tree.
2708          * 3. Traverse all uberblocks and insert in uberblock tree.
2709          */
2710         for (int l = 0; l < VDEV_LABELS; l++) {
2711                 label_t *label = &labels[l];
2712                 char *buf = label->label.vl_vdev_phys.vp_nvlist;
2713                 size_t buflen = sizeof (label->label.vl_vdev_phys.vp_nvlist);
2714                 nvlist_t *config;
2715                 cksum_record_t *rec;
2716                 zio_cksum_t cksum;
2717                 vdev_t vd;
2718
2719                 if (pread64(fd, &label->label, sizeof (label->label),
2720                     vdev_label_offset(psize, l, 0)) != sizeof (label->label)) {
2721                         if (!dump_opt['q'])
2722                                 (void) printf("failed to read label %d\n", l);
2723                         label->read_failed = B_TRUE;
2724                         error = B_TRUE;
2725                         continue;
2726                 }
2727
2728                 label->read_failed = B_FALSE;
2729
2730                 if (nvlist_unpack(buf, buflen, &config, 0) == 0) {
2731                         nvlist_t *vdev_tree = NULL;
2732                         size_t size;
2733
2734                         if ((nvlist_lookup_nvlist(config,
2735                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2736                             (nvlist_lookup_uint64(vdev_tree,
2737                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2738                                 ashift = SPA_MINBLOCKSHIFT;
2739
2740                         if (nvlist_size(config, &size, NV_ENCODE_XDR) != 0)
2741                                 size = buflen;
2742
2743                         fletcher_4_native_varsize(buf, size, &cksum);
2744                         rec = cksum_record_insert(&config_tree, &cksum, l);
2745
2746                         label->config = rec;
2747                         label->config_nv = config;
2748                         config_found = B_TRUE;
2749                 } else {
2750                         error = B_TRUE;
2751                 }
2752
2753                 vd.vdev_ashift = ashift;
2754                 vd.vdev_top = &vd;
2755
2756                 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(&vd); i++) {
2757                         uint64_t uoff = VDEV_UBERBLOCK_OFFSET(&vd, i);
2758                         uberblock_t *ub = (void *)((char *)label + uoff);
2759
2760                         if (uberblock_verify(ub))
2761                                 continue;
2762
2763                         fletcher_4_native_varsize(ub, sizeof (*ub), &cksum);
2764                         rec = cksum_record_insert(&uberblock_tree, &cksum, l);
2765
2766                         label->uberblocks[i] = rec;
2767                 }
2768         }
2769
2770         /*
2771          * Dump the label and uberblocks.
2772          */
2773         for (int l = 0; l < VDEV_LABELS; l++) {
2774                 label_t *label = &labels[l];
2775                 size_t buflen = sizeof (label->label.vl_vdev_phys.vp_nvlist);
2776
2777                 if (label->read_failed == B_TRUE)
2778                         continue;
2779
2780                 if (label->config_nv) {
2781                         dump_config_from_label(label, buflen, l);
2782                 } else {
2783                         if (!dump_opt['q'])
2784                                 (void) printf("failed to unpack label %d\n", l);
2785                 }
2786
2787                 if (dump_opt['u'])
2788                         dump_label_uberblocks(label, ashift, l);
2789
2790                 nvlist_free(label->config_nv);
2791         }
2792
2793         cookie = NULL;
2794         while ((node = avl_destroy_nodes(&config_tree, &cookie)) != NULL)
2795                 umem_free(node, sizeof (cksum_record_t));
2796
2797         cookie = NULL;
2798         while ((node = avl_destroy_nodes(&uberblock_tree, &cookie)) != NULL)
2799                 umem_free(node, sizeof (cksum_record_t));
2800
2801         avl_destroy(&config_tree);
2802         avl_destroy(&uberblock_tree);
2803
2804         (void) close(fd);
2805
2806         return (config_found == B_FALSE ? 2 :
2807             (error == B_TRUE ? 1 : 0));
2808 }
2809
2810 static uint64_t dataset_feature_count[SPA_FEATURES];
2811
2812 /*ARGSUSED*/
2813 static int
2814 dump_one_dir(const char *dsname, void *arg)
2815 {
2816         int error;
2817         objset_t *os;
2818         spa_feature_t f;
2819
2820         error = open_objset(dsname, DMU_OST_ANY, FTAG, &os);
2821         if (error != 0)
2822                 return (0);
2823
2824         for (f = 0; f < SPA_FEATURES; f++) {
2825                 if (!dmu_objset_ds(os)->ds_feature_inuse[f])
2826                         continue;
2827                 ASSERT(spa_feature_table[f].fi_flags &
2828                     ZFEATURE_FLAG_PER_DATASET);
2829                 dataset_feature_count[f]++;
2830         }
2831
2832         dump_dir(os);
2833         close_objset(os, FTAG);
2834         fuid_table_destroy();
2835         return (0);
2836 }
2837
2838 /*
2839  * Block statistics.
2840  */
2841 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2842 typedef struct zdb_blkstats {
2843         uint64_t zb_asize;
2844         uint64_t zb_lsize;
2845         uint64_t zb_psize;
2846         uint64_t zb_count;
2847         uint64_t zb_gangs;
2848         uint64_t zb_ditto_samevdev;
2849         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2850 } zdb_blkstats_t;
2851
2852 /*
2853  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2854  */
2855 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2856 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2857 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2858 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2859
2860 static char *zdb_ot_extname[] = {
2861         "deferred free",
2862         "dedup ditto",
2863         "other",
2864         "Total",
2865 };
2866
2867 #define ZB_TOTAL        DN_MAX_LEVELS
2868
2869 typedef struct zdb_cb {
2870         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2871         uint64_t        zcb_dedup_asize;
2872         uint64_t        zcb_dedup_blocks;
2873         uint64_t        zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2874         uint64_t        zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2875             [BPE_PAYLOAD_SIZE + 1];
2876         uint64_t        zcb_start;
2877         uint64_t        zcb_lastprint;
2878         uint64_t        zcb_totalasize;
2879         uint64_t        zcb_errors[256];
2880         int             zcb_readfails;
2881         int             zcb_haderrors;
2882         spa_t           *zcb_spa;
2883 } zdb_cb_t;
2884
2885 static void
2886 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2887     dmu_object_type_t type)
2888 {
2889         uint64_t refcnt = 0;
2890         int i;
2891
2892         ASSERT(type < ZDB_OT_TOTAL);
2893
2894         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2895                 return;
2896
2897         for (i = 0; i < 4; i++) {
2898                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2899                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2900                 int equal;
2901                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2902
2903                 zb->zb_asize += BP_GET_ASIZE(bp);
2904                 zb->zb_lsize += BP_GET_LSIZE(bp);
2905                 zb->zb_psize += BP_GET_PSIZE(bp);
2906                 zb->zb_count++;
2907
2908                 /*
2909                  * The histogram is only big enough to record blocks up to
2910                  * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2911                  * "other", bucket.
2912                  */
2913                 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2914                 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2915                 zb->zb_psize_histogram[idx]++;
2916
2917                 zb->zb_gangs += BP_COUNT_GANG(bp);
2918
2919                 switch (BP_GET_NDVAS(bp)) {
2920                 case 2:
2921                         if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2922                             DVA_GET_VDEV(&bp->blk_dva[1]))
2923                                 zb->zb_ditto_samevdev++;
2924                         break;
2925                 case 3:
2926                         equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2927                             DVA_GET_VDEV(&bp->blk_dva[1])) +
2928                             (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2929                             DVA_GET_VDEV(&bp->blk_dva[2])) +
2930                             (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2931                             DVA_GET_VDEV(&bp->blk_dva[2]));
2932                         if (equal != 0)
2933                                 zb->zb_ditto_samevdev++;
2934                         break;
2935                 }
2936
2937         }
2938
2939         if (BP_IS_EMBEDDED(bp)) {
2940                 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2941                 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2942                     [BPE_GET_PSIZE(bp)]++;
2943                 return;
2944         }
2945
2946         if (dump_opt['L'])
2947                 return;
2948
2949         if (BP_GET_DEDUP(bp)) {
2950                 ddt_t *ddt;
2951                 ddt_entry_t *dde;
2952
2953                 ddt = ddt_select(zcb->zcb_spa, bp);
2954                 ddt_enter(ddt);
2955                 dde = ddt_lookup(ddt, bp, B_FALSE);
2956
2957                 if (dde == NULL) {
2958                         refcnt = 0;
2959                 } else {
2960                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2961                         ddt_phys_decref(ddp);
2962                         refcnt = ddp->ddp_refcnt;
2963                         if (ddt_phys_total_refcnt(dde) == 0)
2964                                 ddt_remove(ddt, dde);
2965                 }
2966                 ddt_exit(ddt);
2967         }
2968
2969         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2970             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2971             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2972 }
2973
2974 static void
2975 zdb_blkptr_done(zio_t *zio)
2976 {
2977         spa_t *spa = zio->io_spa;
2978         blkptr_t *bp = zio->io_bp;
2979         int ioerr = zio->io_error;
2980         zdb_cb_t *zcb = zio->io_private;
2981         zbookmark_phys_t *zb = &zio->io_bookmark;
2982
2983         abd_free(zio->io_abd);
2984
2985         mutex_enter(&spa->spa_scrub_lock);
2986         spa->spa_scrub_inflight--;
2987         cv_broadcast(&spa->spa_scrub_io_cv);
2988
2989         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2990                 char blkbuf[BP_SPRINTF_LEN];
2991
2992                 zcb->zcb_haderrors = 1;
2993                 zcb->zcb_errors[ioerr]++;
2994
2995                 if (dump_opt['b'] >= 2)
2996                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2997                 else
2998                         blkbuf[0] = '\0';
2999
3000                 (void) printf("zdb_blkptr_cb: "
3001                     "Got error %d reading "
3002                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
3003                     ioerr,
3004                     (u_longlong_t)zb->zb_objset,
3005                     (u_longlong_t)zb->zb_object,
3006                     (u_longlong_t)zb->zb_level,
3007                     (u_longlong_t)zb->zb_blkid,
3008                     blkbuf);
3009         }
3010         mutex_exit(&spa->spa_scrub_lock);
3011 }
3012
3013 static int
3014 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
3015     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
3016 {
3017         zdb_cb_t *zcb = arg;
3018         dmu_object_type_t type;
3019         boolean_t is_metadata;
3020
3021         if (bp == NULL)
3022                 return (0);
3023
3024         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
3025                 char blkbuf[BP_SPRINTF_LEN];
3026                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3027                 (void) printf("objset %llu object %llu "
3028                     "level %lld offset 0x%llx %s\n",
3029                     (u_longlong_t)zb->zb_objset,
3030                     (u_longlong_t)zb->zb_object,
3031                     (longlong_t)zb->zb_level,
3032                     (u_longlong_t)blkid2offset(dnp, bp, zb),
3033                     blkbuf);
3034         }
3035
3036         if (BP_IS_HOLE(bp))
3037                 return (0);
3038
3039         type = BP_GET_TYPE(bp);
3040
3041         zdb_count_block(zcb, zilog, bp,
3042             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
3043
3044         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
3045
3046         if (!BP_IS_EMBEDDED(bp) &&
3047             (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
3048                 size_t size = BP_GET_PSIZE(bp);
3049                 abd_t *abd = abd_alloc(size, B_FALSE);
3050                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
3051
3052                 /* If it's an intent log block, failure is expected. */
3053                 if (zb->zb_level == ZB_ZIL_LEVEL)
3054                         flags |= ZIO_FLAG_SPECULATIVE;
3055
3056                 mutex_enter(&spa->spa_scrub_lock);
3057                 while (spa->spa_scrub_inflight > max_inflight)
3058                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
3059                 spa->spa_scrub_inflight++;
3060                 mutex_exit(&spa->spa_scrub_lock);
3061
3062                 zio_nowait(zio_read(NULL, spa, bp, abd, size,
3063                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
3064         }
3065
3066         zcb->zcb_readfails = 0;
3067
3068         /* only call gethrtime() every 100 blocks */
3069         static int iters;
3070         if (++iters > 100)
3071                 iters = 0;
3072         else
3073                 return (0);
3074
3075         if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
3076                 uint64_t now = gethrtime();
3077                 char buf[10];
3078                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
3079                 int kb_per_sec =
3080                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
3081                 int sec_remaining =
3082                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
3083
3084                 zfs_nicenum(bytes, buf, sizeof (buf));
3085                 (void) fprintf(stderr,
3086                     "\r%5s completed (%4dMB/s) "
3087                     "estimated time remaining: %uhr %02umin %02usec        ",
3088                     buf, kb_per_sec / 1024,
3089                     sec_remaining / 60 / 60,
3090                     sec_remaining / 60 % 60,
3091                     sec_remaining % 60);
3092
3093                 zcb->zcb_lastprint = now;
3094         }
3095
3096         return (0);
3097 }
3098
3099 static void
3100 zdb_leak(void *arg, uint64_t start, uint64_t size)
3101 {
3102         vdev_t *vd = arg;
3103
3104         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
3105             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
3106 }
3107
3108 static metaslab_ops_t zdb_metaslab_ops = {
3109         NULL    /* alloc */
3110 };
3111
3112 static void
3113 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
3114 {
3115         ddt_bookmark_t ddb = { 0 };
3116         ddt_entry_t dde;
3117         int error;
3118         int p;
3119
3120         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
3121                 blkptr_t blk;
3122                 ddt_phys_t *ddp = dde.dde_phys;
3123
3124                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
3125                         return;
3126
3127                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
3128
3129                 for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
3130                         if (ddp->ddp_phys_birth == 0)
3131                                 continue;
3132                         ddt_bp_create(ddb.ddb_checksum,
3133                             &dde.dde_key, ddp, &blk);
3134                         if (p == DDT_PHYS_DITTO) {
3135                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
3136                         } else {
3137                                 zcb->zcb_dedup_asize +=
3138                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
3139                                 zcb->zcb_dedup_blocks++;
3140                         }
3141                 }
3142                 if (!dump_opt['L']) {
3143                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
3144                         ddt_enter(ddt);
3145                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
3146                         ddt_exit(ddt);
3147                 }
3148         }
3149
3150         ASSERT(error == ENOENT);
3151 }
3152
3153 static void
3154 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
3155 {
3156         zcb->zcb_spa = spa;
3157         uint64_t c, m;
3158
3159         if (!dump_opt['L']) {
3160                 vdev_t *rvd = spa->spa_root_vdev;
3161
3162                 /*
3163                  * We are going to be changing the meaning of the metaslab's
3164                  * ms_tree.  Ensure that the allocator doesn't try to
3165                  * use the tree.
3166                  */
3167                 spa->spa_normal_class->mc_ops = &zdb_metaslab_ops;
3168                 spa->spa_log_class->mc_ops = &zdb_metaslab_ops;
3169
3170                 for (c = 0; c < rvd->vdev_children; c++) {
3171                         vdev_t *vd = rvd->vdev_child[c];
3172                         ASSERTV(metaslab_group_t *mg = vd->vdev_mg);
3173                         for (m = 0; m < vd->vdev_ms_count; m++) {
3174                                 metaslab_t *msp = vd->vdev_ms[m];
3175                                 ASSERT3P(msp->ms_group, ==, mg);
3176                                 mutex_enter(&msp->ms_lock);
3177                                 metaslab_unload(msp);
3178
3179                                 /*
3180                                  * For leak detection, we overload the metaslab
3181                                  * ms_tree to contain allocated segments
3182                                  * instead of free segments. As a result,
3183                                  * we can't use the normal metaslab_load/unload
3184                                  * interfaces.
3185                                  */
3186                                 if (msp->ms_sm != NULL) {
3187                                         (void) fprintf(stderr,
3188                                             "\rloading space map for "
3189                                             "vdev %llu of %llu, "
3190                                             "metaslab %llu of %llu ...",
3191                                             (longlong_t)c,
3192                                             (longlong_t)rvd->vdev_children,
3193                                             (longlong_t)m,
3194                                             (longlong_t)vd->vdev_ms_count);
3195
3196                                         /*
3197                                          * We don't want to spend the CPU
3198                                          * manipulating the size-ordered
3199                                          * tree, so clear the range_tree
3200                                          * ops.
3201                                          */
3202                                         msp->ms_tree->rt_ops = NULL;
3203                                         VERIFY0(space_map_load(msp->ms_sm,
3204                                             msp->ms_tree, SM_ALLOC));
3205
3206                                         if (!msp->ms_loaded)
3207                                                 msp->ms_loaded = B_TRUE;
3208                                 }
3209                                 mutex_exit(&msp->ms_lock);
3210                         }
3211                 }
3212                 (void) fprintf(stderr, "\n");
3213         }
3214
3215         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3216
3217         zdb_ddt_leak_init(spa, zcb);
3218
3219         spa_config_exit(spa, SCL_CONFIG, FTAG);
3220 }
3221
3222 static void
3223 zdb_leak_fini(spa_t *spa)
3224 {
3225         int c, m;
3226
3227         if (!dump_opt['L']) {
3228                 vdev_t *rvd = spa->spa_root_vdev;
3229                 for (c = 0; c < rvd->vdev_children; c++) {
3230                         vdev_t *vd = rvd->vdev_child[c];
3231                         ASSERTV(metaslab_group_t *mg = vd->vdev_mg);
3232                         for (m = 0; m < vd->vdev_ms_count; m++) {
3233                                 metaslab_t *msp = vd->vdev_ms[m];
3234                                 ASSERT3P(mg, ==, msp->ms_group);
3235                                 mutex_enter(&msp->ms_lock);
3236
3237                                 /*
3238                                  * The ms_tree has been overloaded to
3239                                  * contain allocated segments. Now that we
3240                                  * finished traversing all blocks, any
3241                                  * block that remains in the ms_tree
3242                                  * represents an allocated block that we
3243                                  * did not claim during the traversal.
3244                                  * Claimed blocks would have been removed
3245                                  * from the ms_tree.
3246                                  */
3247                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
3248
3249                                 if (msp->ms_loaded)
3250                                         msp->ms_loaded = B_FALSE;
3251
3252                                 mutex_exit(&msp->ms_lock);
3253                         }
3254                 }
3255         }
3256 }
3257
3258 /* ARGSUSED */
3259 static int
3260 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
3261 {
3262         zdb_cb_t *zcb = arg;
3263
3264         if (dump_opt['b'] >= 5) {
3265                 char blkbuf[BP_SPRINTF_LEN];
3266                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3267                 (void) printf("[%s] %s\n",
3268                     "deferred free", blkbuf);
3269         }
3270         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
3271         return (0);
3272 }
3273
3274 static int
3275 dump_block_stats(spa_t *spa)
3276 {
3277         zdb_cb_t zcb;
3278         zdb_blkstats_t *zb, *tzb;
3279         uint64_t norm_alloc, norm_space, total_alloc, total_found;
3280         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
3281         boolean_t leaks = B_FALSE;
3282         int e, c;
3283         bp_embedded_type_t i;
3284
3285         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
3286             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
3287             (dump_opt['c'] == 1) ? "metadata " : "",
3288             dump_opt['c'] ? "checksums " : "",
3289             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
3290             !dump_opt['L'] ? "nothing leaked " : "");
3291
3292         /*
3293          * Load all space maps as SM_ALLOC maps, then traverse the pool
3294          * claiming each block we discover.  If the pool is perfectly
3295          * consistent, the space maps will be empty when we're done.
3296          * Anything left over is a leak; any block we can't claim (because
3297          * it's not part of any space map) is a double allocation,
3298          * reference to a freed block, or an unclaimed log block.
3299          */
3300         bzero(&zcb, sizeof (zdb_cb_t));
3301         zdb_leak_init(spa, &zcb);
3302
3303         /*
3304          * If there's a deferred-free bplist, process that first.
3305          */
3306         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
3307             count_block_cb, &zcb, NULL);
3308         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3309                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
3310                     count_block_cb, &zcb, NULL);
3311         }
3312         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
3313                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
3314                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
3315                     &zcb, NULL));
3316         }
3317
3318         if (dump_opt['c'] > 1)
3319                 flags |= TRAVERSE_PREFETCH_DATA;
3320
3321         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
3322         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
3323         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
3324
3325         /*
3326          * If we've traversed the data blocks then we need to wait for those
3327          * I/Os to complete. We leverage "The Godfather" zio to wait on
3328          * all async I/Os to complete.
3329          */
3330         if (dump_opt['c']) {
3331                 for (c = 0; c < max_ncpus; c++) {
3332                         (void) zio_wait(spa->spa_async_zio_root[c]);
3333                         spa->spa_async_zio_root[c] = zio_root(spa, NULL, NULL,
3334                             ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
3335                             ZIO_FLAG_GODFATHER);
3336                 }
3337         }
3338
3339         if (zcb.zcb_haderrors) {
3340                 (void) printf("\nError counts:\n\n");
3341                 (void) printf("\t%5s  %s\n", "errno", "count");
3342                 for (e = 0; e < 256; e++) {
3343                         if (zcb.zcb_errors[e] != 0) {
3344                                 (void) printf("\t%5d  %llu\n",
3345                                     e, (u_longlong_t)zcb.zcb_errors[e]);
3346                         }
3347                 }
3348         }
3349
3350         /*
3351          * Report any leaked segments.
3352          */
3353         zdb_leak_fini(spa);
3354
3355         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
3356
3357         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
3358         norm_space = metaslab_class_get_space(spa_normal_class(spa));
3359
3360         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
3361         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
3362
3363         if (total_found == total_alloc) {
3364                 if (!dump_opt['L'])
3365                         (void) printf("\n\tNo leaks (block sum matches space"
3366                             " maps exactly)\n");
3367         } else {
3368                 (void) printf("block traversal size %llu != alloc %llu "
3369                     "(%s %lld)\n",
3370                     (u_longlong_t)total_found,
3371                     (u_longlong_t)total_alloc,
3372                     (dump_opt['L']) ? "unreachable" : "leaked",
3373                     (longlong_t)(total_alloc - total_found));
3374                 leaks = B_TRUE;
3375         }
3376
3377         if (tzb->zb_count == 0)
3378                 return (2);
3379
3380         (void) printf("\n");
3381         (void) printf("\tbp count:      %10llu\n",
3382             (u_longlong_t)tzb->zb_count);
3383         (void) printf("\tganged count:  %10llu\n",
3384             (longlong_t)tzb->zb_gangs);
3385         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
3386             (u_longlong_t)tzb->zb_lsize,
3387             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
3388         (void) printf("\tbp physical:   %10llu      avg:"
3389             " %6llu     compression: %6.2f\n",
3390             (u_longlong_t)tzb->zb_psize,
3391             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
3392             (double)tzb->zb_lsize / tzb->zb_psize);
3393         (void) printf("\tbp allocated:  %10llu      avg:"
3394             " %6llu     compression: %6.2f\n",
3395             (u_longlong_t)tzb->zb_asize,
3396             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
3397             (double)tzb->zb_lsize / tzb->zb_asize);
3398         (void) printf("\tbp deduped:    %10llu    ref>1:"
3399             " %6llu   deduplication: %6.2f\n",
3400             (u_longlong_t)zcb.zcb_dedup_asize,
3401             (u_longlong_t)zcb.zcb_dedup_blocks,
3402             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
3403         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
3404             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
3405
3406         for (i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
3407                 if (zcb.zcb_embedded_blocks[i] == 0)
3408                         continue;
3409                 (void) printf("\n");
3410                 (void) printf("\tadditional, non-pointer bps of type %u: "
3411                     "%10llu\n",
3412                     i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
3413
3414                 if (dump_opt['b'] >= 3) {
3415                         (void) printf("\t number of (compressed) bytes:  "
3416                             "number of bps\n");
3417                         dump_histogram(zcb.zcb_embedded_histogram[i],
3418                             sizeof (zcb.zcb_embedded_histogram[i]) /
3419                             sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
3420                 }
3421         }
3422
3423         if (tzb->zb_ditto_samevdev != 0) {
3424                 (void) printf("\tDittoed blocks on same vdev: %llu\n",
3425                     (longlong_t)tzb->zb_ditto_samevdev);
3426         }
3427
3428         if (dump_opt['b'] >= 2) {
3429                 int l, t, level;
3430                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
3431                     "\t  avg\t comp\t%%Total\tType\n");
3432
3433                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
3434                         char csize[32], lsize[32], psize[32], asize[32];
3435                         char avg[32], gang[32];
3436                         char *typename;
3437
3438                         if (t < DMU_OT_NUMTYPES)
3439                                 typename = dmu_ot[t].ot_name;
3440                         else
3441                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
3442
3443                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
3444                                 (void) printf("%6s\t%5s\t%5s\t%5s"
3445                                     "\t%5s\t%5s\t%6s\t%s\n",
3446                                     "-",
3447                                     "-",
3448                                     "-",
3449                                     "-",
3450                                     "-",
3451                                     "-",
3452                                     "-",
3453                                     typename);
3454                                 continue;
3455                         }
3456
3457                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
3458                                 level = (l == -1 ? ZB_TOTAL : l);
3459                                 zb = &zcb.zcb_type[level][t];
3460
3461                                 if (zb->zb_asize == 0)
3462                                         continue;
3463
3464                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
3465                                         continue;
3466
3467                                 if (level == 0 && zb->zb_asize ==
3468                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
3469                                         continue;
3470
3471                                 zdb_nicenum(zb->zb_count, csize);
3472                                 zdb_nicenum(zb->zb_lsize, lsize);
3473                                 zdb_nicenum(zb->zb_psize, psize);
3474                                 zdb_nicenum(zb->zb_asize, asize);
3475                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
3476                                 zdb_nicenum(zb->zb_gangs, gang);
3477
3478                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
3479                                     "\t%5.2f\t%6.2f\t",
3480                                     csize, lsize, psize, asize, avg,
3481                                     (double)zb->zb_lsize / zb->zb_psize,
3482                                     100.0 * zb->zb_asize / tzb->zb_asize);
3483
3484                                 if (level == ZB_TOTAL)
3485                                         (void) printf("%s\n", typename);
3486                                 else
3487                                         (void) printf("    L%d %s\n",
3488                                             level, typename);
3489
3490                                 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
3491                                         (void) printf("\t number of ganged "
3492                                             "blocks: %s\n", gang);
3493                                 }
3494
3495                                 if (dump_opt['b'] >= 4) {
3496                                         (void) printf("psize "
3497                                             "(in 512-byte sectors): "
3498                                             "number of blocks\n");
3499                                         dump_histogram(zb->zb_psize_histogram,
3500                                             PSIZE_HISTO_SIZE, 0);
3501                                 }
3502                         }
3503                 }
3504         }
3505
3506         (void) printf("\n");
3507
3508         if (leaks)
3509                 return (2);
3510
3511         if (zcb.zcb_haderrors)
3512                 return (3);
3513
3514         return (0);
3515 }
3516
3517 typedef struct zdb_ddt_entry {
3518         ddt_key_t       zdde_key;
3519         uint64_t        zdde_ref_blocks;
3520         uint64_t        zdde_ref_lsize;
3521         uint64_t        zdde_ref_psize;
3522         uint64_t        zdde_ref_dsize;
3523         avl_node_t      zdde_node;
3524 } zdb_ddt_entry_t;
3525
3526 /* ARGSUSED */
3527 static int
3528 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
3529     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
3530 {
3531         avl_tree_t *t = arg;
3532         avl_index_t where;
3533         zdb_ddt_entry_t *zdde, zdde_search;
3534
3535         if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
3536                 return (0);
3537
3538         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
3539                 (void) printf("traversing objset %llu, %llu objects, "
3540                     "%lu blocks so far\n",
3541                     (u_longlong_t)zb->zb_objset,
3542                     (u_longlong_t)BP_GET_FILL(bp),
3543                     avl_numnodes(t));
3544         }
3545
3546         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
3547             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
3548                 return (0);
3549
3550         ddt_key_fill(&zdde_search.zdde_key, bp);
3551
3552         zdde = avl_find(t, &zdde_search, &where);
3553
3554         if (zdde == NULL) {
3555                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
3556                 zdde->zdde_key = zdde_search.zdde_key;
3557                 avl_insert(t, zdde, where);
3558         }
3559
3560         zdde->zdde_ref_blocks += 1;
3561         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
3562         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
3563         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
3564
3565         return (0);
3566 }
3567
3568 static void
3569 dump_simulated_ddt(spa_t *spa)
3570 {
3571         avl_tree_t t;
3572         void *cookie = NULL;
3573         zdb_ddt_entry_t *zdde;
3574         ddt_histogram_t ddh_total;
3575         ddt_stat_t dds_total;
3576
3577         bzero(&ddh_total, sizeof (ddt_histogram_t));
3578         bzero(&dds_total, sizeof (ddt_stat_t));
3579
3580         avl_create(&t, ddt_entry_compare,
3581             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
3582
3583         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3584
3585         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
3586             zdb_ddt_add_cb, &t);
3587
3588         spa_config_exit(spa, SCL_CONFIG, FTAG);
3589
3590         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
3591                 ddt_stat_t dds;
3592                 uint64_t refcnt = zdde->zdde_ref_blocks;
3593                 ASSERT(refcnt != 0);
3594
3595                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
3596                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
3597                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
3598                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
3599
3600                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
3601                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
3602                 dds.dds_ref_psize = zdde->zdde_ref_psize;
3603                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
3604
3605                 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
3606                     &dds, 0);
3607
3608                 umem_free(zdde, sizeof (*zdde));
3609         }
3610
3611         avl_destroy(&t);
3612
3613         ddt_histogram_stat(&dds_total, &ddh_total);
3614
3615         (void) printf("Simulated DDT histogram:\n");
3616
3617         zpool_dump_ddt(&dds_total, &ddh_total);
3618
3619         dump_dedup_ratio(&dds_total);
3620 }
3621
3622 static void
3623 dump_zpool(spa_t *spa)
3624 {
3625         dsl_pool_t *dp = spa_get_dsl(spa);
3626         int rc = 0;
3627
3628         if (dump_opt['S']) {
3629                 dump_simulated_ddt(spa);
3630                 return;
3631         }
3632
3633         if (!dump_opt['e'] && dump_opt['C'] > 1) {
3634                 (void) printf("\nCached configuration:\n");
3635                 dump_nvlist(spa->spa_config, 8);
3636         }
3637
3638         if (dump_opt['C'])
3639                 dump_config(spa);
3640
3641         if (dump_opt['u'])
3642                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
3643
3644         if (dump_opt['D'])
3645                 dump_all_ddts(spa);
3646
3647         if (dump_opt['d'] > 2 || dump_opt['m'])
3648                 dump_metaslabs(spa);
3649         if (dump_opt['M'])
3650                 dump_metaslab_groups(spa);
3651
3652         if (dump_opt['d'] || dump_opt['i']) {
3653                 spa_feature_t f;
3654
3655                 dump_dir(dp->dp_meta_objset);
3656                 if (dump_opt['d'] >= 3) {
3657                         dump_full_bpobj(&spa->spa_deferred_bpobj,
3658                             "Deferred frees", 0);
3659                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3660                                 dump_full_bpobj(
3661                                     &spa->spa_dsl_pool->dp_free_bpobj,
3662                                     "Pool snapshot frees", 0);
3663                         }
3664
3665                         if (spa_feature_is_active(spa,
3666                             SPA_FEATURE_ASYNC_DESTROY)) {
3667                                 dump_bptree(spa->spa_meta_objset,
3668                                     spa->spa_dsl_pool->dp_bptree_obj,
3669                                     "Pool dataset frees");
3670                         }
3671                         dump_dtl(spa->spa_root_vdev, 0);
3672                 }
3673                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
3674                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
3675
3676                 for (f = 0; f < SPA_FEATURES; f++) {
3677                         uint64_t refcount;
3678
3679                         if (!(spa_feature_table[f].fi_flags &
3680                             ZFEATURE_FLAG_PER_DATASET) ||
3681                             !spa_feature_is_enabled(spa, f)) {
3682                                 ASSERT0(dataset_feature_count[f]);
3683                                 continue;
3684                         }
3685                         if (feature_get_refcount(spa, &spa_feature_table[f],
3686                             &refcount) == ENOTSUP)
3687                                 continue;
3688                         if (dataset_feature_count[f] != refcount) {
3689                                 (void) printf("%s feature refcount mismatch: "
3690                                     "%lld datasets != %lld refcount\n",
3691                                     spa_feature_table[f].fi_uname,
3692                                     (longlong_t)dataset_feature_count[f],
3693                                     (longlong_t)refcount);
3694                                 rc = 2;
3695                         } else {
3696                                 (void) printf("Verified %s feature refcount "
3697                                     "of %llu is correct\n",
3698                                     spa_feature_table[f].fi_uname,
3699                                     (longlong_t)refcount);
3700                         }
3701                 }
3702         }
3703         if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
3704                 rc = dump_block_stats(spa);
3705
3706         if (rc == 0)
3707                 rc = verify_spacemap_refcounts(spa);
3708
3709         if (dump_opt['s'])
3710                 show_pool_stats(spa);
3711
3712         if (dump_opt['h'])
3713                 dump_history(spa);
3714
3715         if (rc != 0) {
3716                 dump_debug_buffer();
3717                 exit(rc);
3718         }
3719 }
3720
3721 #define ZDB_FLAG_CHECKSUM       0x0001
3722 #define ZDB_FLAG_DECOMPRESS     0x0002
3723 #define ZDB_FLAG_BSWAP          0x0004
3724 #define ZDB_FLAG_GBH            0x0008
3725 #define ZDB_FLAG_INDIRECT       0x0010
3726 #define ZDB_FLAG_PHYS           0x0020
3727 #define ZDB_FLAG_RAW            0x0040
3728 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
3729
3730 int flagbits[256];
3731
3732 static void
3733 zdb_print_blkptr(blkptr_t *bp, int flags)
3734 {
3735         char blkbuf[BP_SPRINTF_LEN];
3736
3737         if (flags & ZDB_FLAG_BSWAP)
3738                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3739
3740         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3741         (void) printf("%s\n", blkbuf);
3742 }
3743
3744 static void
3745 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3746 {
3747         int i;
3748
3749         for (i = 0; i < nbps; i++)
3750                 zdb_print_blkptr(&bp[i], flags);
3751 }
3752
3753 static void
3754 zdb_dump_gbh(void *buf, int flags)
3755 {
3756         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3757 }
3758
3759 static void
3760 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3761 {
3762         if (flags & ZDB_FLAG_BSWAP)
3763                 byteswap_uint64_array(buf, size);
3764         VERIFY(write(fileno(stdout), buf, size) == size);
3765 }
3766
3767 static void
3768 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3769 {
3770         uint64_t *d = (uint64_t *)buf;
3771         int nwords = size / sizeof (uint64_t);
3772         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3773         int i, j;
3774         char *hdr, *c;
3775
3776
3777         if (do_bswap)
3778                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
3779         else
3780                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
3781
3782         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
3783
3784 #ifdef _LITTLE_ENDIAN
3785         /* correct the endianness */
3786         do_bswap = !do_bswap;
3787 #endif
3788         for (i = 0; i < nwords; i += 2) {
3789                 (void) printf("%06llx:  %016llx  %016llx  ",
3790                     (u_longlong_t)(i * sizeof (uint64_t)),
3791                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3792                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3793
3794                 c = (char *)&d[i];
3795                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3796                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3797                 (void) printf("\n");
3798         }
3799 }
3800
3801 /*
3802  * There are two acceptable formats:
3803  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
3804  *      child[.child]*    - For example: 0.1.1
3805  *
3806  * The second form can be used to specify arbitrary vdevs anywhere
3807  * in the hierarchy.  For example, in a pool with a mirror of
3808  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3809  */
3810 static vdev_t *
3811 zdb_vdev_lookup(vdev_t *vdev, char *path)
3812 {
3813         char *s, *p, *q;
3814         int i;
3815
3816         if (vdev == NULL)
3817                 return (NULL);
3818
3819         /* First, assume the x.x.x.x format */
3820         i = (int)strtoul(path, &s, 10);
3821         if (s == path || (s && *s != '.' && *s != '\0'))
3822                 goto name;
3823         if (i < 0 || i >= vdev->vdev_children)
3824                 return (NULL);
3825
3826         vdev = vdev->vdev_child[i];
3827         if (s && *s == '\0')
3828                 return (vdev);
3829         return (zdb_vdev_lookup(vdev, s+1));
3830
3831 name:
3832         for (i = 0; i < vdev->vdev_children; i++) {
3833                 vdev_t *vc = vdev->vdev_child[i];
3834
3835                 if (vc->vdev_path == NULL) {
3836                         vc = zdb_vdev_lookup(vc, path);
3837                         if (vc == NULL)
3838                                 continue;
3839                         else
3840                                 return (vc);
3841                 }
3842
3843                 p = strrchr(vc->vdev_path, '/');
3844                 p = p ? p + 1 : vc->vdev_path;
3845                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3846
3847                 if (strcmp(vc->vdev_path, path) == 0)
3848                         return (vc);
3849                 if (strcmp(p, path) == 0)
3850                         return (vc);
3851                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3852                         return (vc);
3853         }
3854
3855         return (NULL);
3856 }
3857
3858 /* ARGSUSED */
3859 static int
3860 random_get_pseudo_bytes_cb(void *buf, size_t len, void *unused)
3861 {
3862         return (random_get_pseudo_bytes(buf, len));
3863 }
3864
3865 /*
3866  * Read a block from a pool and print it out.  The syntax of the
3867  * block descriptor is:
3868  *
3869  *      pool:vdev_specifier:offset:size[:flags]
3870  *
3871  *      pool           - The name of the pool you wish to read from
3872  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3873  *      offset         - offset, in hex, in bytes
3874  *      size           - Amount of data to read, in hex, in bytes
3875  *      flags          - A string of characters specifying options
3876  *               b: Decode a blkptr at given offset within block
3877  *              *c: Calculate and display checksums
3878  *               d: Decompress data before dumping
3879  *               e: Byteswap data before dumping
3880  *               g: Display data as a gang block header
3881  *               i: Display as an indirect block
3882  *               p: Do I/O to physical offset
3883  *               r: Dump raw data to stdout
3884  *
3885  *              * = not yet implemented
3886  */
3887 static void
3888 zdb_read_block(char *thing, spa_t *spa)
3889 {
3890         blkptr_t blk, *bp = &blk;
3891         dva_t *dva = bp->blk_dva;
3892         int flags = 0;
3893         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3894         zio_t *zio;
3895         vdev_t *vd;
3896         abd_t *pabd;
3897         void *lbuf, *buf;
3898         char *s, *p, *dup, *vdev, *flagstr;
3899         int i, error;
3900         boolean_t borrowed = B_FALSE;
3901
3902         dup = strdup(thing);
3903         s = strtok(dup, ":");
3904         vdev = s ? s : "";
3905         s = strtok(NULL, ":");
3906         offset = strtoull(s ? s : "", NULL, 16);
3907         s = strtok(NULL, ":");
3908         size = strtoull(s ? s : "", NULL, 16);
3909         s = strtok(NULL, ":");
3910         flagstr = s ? s : "";
3911
3912         s = NULL;
3913         if (size == 0)
3914                 s = "size must not be zero";
3915         if (!IS_P2ALIGNED(size, DEV_BSIZE))
3916                 s = "size must be a multiple of sector size";
3917         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3918                 s = "offset must be a multiple of sector size";
3919         if (s) {
3920                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3921                 free(dup);
3922                 return;
3923         }
3924
3925         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3926                 for (i = 0; flagstr[i]; i++) {
3927                         int bit = flagbits[(uchar_t)flagstr[i]];
3928
3929                         if (bit == 0) {
3930                                 (void) printf("***Invalid flag: %c\n",
3931                                     flagstr[i]);
3932                                 continue;
3933                         }
3934                         flags |= bit;
3935
3936                         /* If it's not something with an argument, keep going */
3937                         if ((bit & (ZDB_FLAG_CHECKSUM |
3938                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3939                                 continue;
3940
3941                         p = &flagstr[i + 1];
3942                         if (bit == ZDB_FLAG_PRINT_BLKPTR) {
3943                                 blkptr_offset = strtoull(p, &p, 16);
3944                                 i = p - &flagstr[i + 1];
3945                         }
3946                         if (*p != ':' && *p != '\0') {
3947                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3948                                 free(dup);
3949                                 return;
3950                         }
3951                 }
3952         }
3953
3954         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3955         if (vd == NULL) {
3956                 (void) printf("***Invalid vdev: %s\n", vdev);
3957                 free(dup);
3958                 return;
3959         } else {
3960                 if (vd->vdev_path)
3961                         (void) fprintf(stderr, "Found vdev: %s\n",
3962                             vd->vdev_path);
3963                 else
3964                         (void) fprintf(stderr, "Found vdev type: %s\n",
3965                             vd->vdev_ops->vdev_op_type);
3966         }
3967
3968         psize = size;
3969         lsize = size;
3970
3971         pabd = abd_alloc_for_io(SPA_MAXBLOCKSIZE, B_FALSE);
3972         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3973
3974         BP_ZERO(bp);
3975
3976         DVA_SET_VDEV(&dva[0], vd->vdev_id);
3977         DVA_SET_OFFSET(&dva[0], offset);
3978         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3979         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3980
3981         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3982
3983         BP_SET_LSIZE(bp, lsize);
3984         BP_SET_PSIZE(bp, psize);
3985         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3986         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3987         BP_SET_TYPE(bp, DMU_OT_NONE);
3988         BP_SET_LEVEL(bp, 0);
3989         BP_SET_DEDUP(bp, 0);
3990         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3991
3992         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3993         zio = zio_root(spa, NULL, NULL, 0);
3994
3995         if (vd == vd->vdev_top) {
3996                 /*
3997                  * Treat this as a normal block read.
3998                  */
3999                 zio_nowait(zio_read(zio, spa, bp, pabd, psize, NULL, NULL,
4000                     ZIO_PRIORITY_SYNC_READ,
4001                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
4002         } else {
4003                 /*
4004                  * Treat this as a vdev child I/O.
4005                  */
4006                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pabd,
4007                     psize, ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
4008                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
4009                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
4010                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
4011         }
4012
4013         error = zio_wait(zio);
4014         spa_config_exit(spa, SCL_STATE, FTAG);
4015
4016         if (error) {
4017                 (void) printf("Read of %s failed, error: %d\n", thing, error);
4018                 goto out;
4019         }
4020
4021         if (flags & ZDB_FLAG_DECOMPRESS) {
4022                 /*
4023                  * We don't know how the data was compressed, so just try
4024                  * every decompress function at every inflated blocksize.
4025                  */
4026                 enum zio_compress c;
4027                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
4028                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
4029
4030                 abd_copy_to_buf(pbuf2, pabd, psize);
4031
4032                 VERIFY0(abd_iterate_func(pabd, psize, SPA_MAXBLOCKSIZE - psize,
4033                     random_get_pseudo_bytes_cb, NULL));
4034
4035                 VERIFY0(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
4036                     SPA_MAXBLOCKSIZE - psize));
4037
4038                 /*
4039                  * XXX - On the one hand, with SPA_MAXBLOCKSIZE at 16MB,
4040                  * this could take a while and we should let the user know
4041                  * we are not stuck.  On the other hand, printing progress
4042                  * info gets old after a while.  What to do?
4043                  */
4044                 for (lsize = psize + SPA_MINBLOCKSIZE;
4045                     lsize <= SPA_MAXBLOCKSIZE; lsize += SPA_MINBLOCKSIZE) {
4046                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
4047                                 (void) fprintf(stderr,
4048                                     "Trying %05llx -> %05llx (%s)\n",
4049                                     (u_longlong_t)psize, (u_longlong_t)lsize,
4050                                     zio_compress_table[c].ci_name);
4051                                 if (zio_decompress_data(c, pabd,
4052                                     lbuf, psize, lsize) == 0 &&
4053                                     zio_decompress_data_buf(c, pbuf2,
4054                                     lbuf2, psize, lsize) == 0 &&
4055                                     bcmp(lbuf, lbuf2, lsize) == 0)
4056                                         break;
4057                         }
4058                         if (c != ZIO_COMPRESS_FUNCTIONS)
4059                                 break;
4060                 }
4061
4062                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
4063                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
4064
4065                 if (lsize <= psize) {
4066                         (void) printf("Decompress of %s failed\n", thing);
4067                         goto out;
4068                 }
4069                 buf = lbuf;
4070                 size = lsize;
4071         } else {
4072                 size = psize;
4073                 buf = abd_borrow_buf_copy(pabd, size);
4074                 borrowed = B_TRUE;
4075         }
4076
4077         if (flags & ZDB_FLAG_PRINT_BLKPTR)
4078                 zdb_print_blkptr((blkptr_t *)(void *)
4079                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
4080         else if (flags & ZDB_FLAG_RAW)
4081                 zdb_dump_block_raw(buf, size, flags);
4082         else if (flags & ZDB_FLAG_INDIRECT)
4083                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
4084                     flags);
4085         else if (flags & ZDB_FLAG_GBH)
4086                 zdb_dump_gbh(buf, flags);
4087         else
4088                 zdb_dump_block(thing, buf, size, flags);
4089
4090         if (borrowed)
4091                 abd_return_buf_copy(pabd, buf, size);
4092
4093 out:
4094         abd_free(pabd);
4095         umem_free(lbuf, SPA_MAXBLOCKSIZE);
4096         free(dup);
4097 }
4098
4099 static boolean_t
4100 pool_match(nvlist_t *cfg, char *tgt)
4101 {
4102         uint64_t v, guid = strtoull(tgt, NULL, 0);
4103         char *s;
4104
4105         if (guid != 0) {
4106                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
4107                         return (v == guid);
4108         } else {
4109                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
4110                         return (strcmp(s, tgt) == 0);
4111         }
4112         return (B_FALSE);
4113 }
4114
4115 static char *
4116 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
4117 {
4118         nvlist_t *pools;
4119         nvlist_t *match = NULL;
4120         char *name = NULL;
4121         char *sepp = NULL;
4122         char sep = '\0';
4123         int count = 0;
4124         importargs_t args = { 0 };
4125
4126         args.paths = dirc;
4127         args.path = dirv;
4128         args.can_be_active = B_TRUE;
4129
4130         if ((sepp = strpbrk(*target, "/@")) != NULL) {
4131                 sep = *sepp;
4132                 *sepp = '\0';
4133         }
4134
4135         pools = zpool_search_import(g_zfs, &args);
4136
4137         if (pools != NULL) {
4138                 nvpair_t *elem = NULL;
4139                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
4140                         verify(nvpair_value_nvlist(elem, configp) == 0);
4141                         if (pool_match(*configp, *target)) {
4142                                 count++;
4143                                 if (match != NULL) {
4144                                         /* print previously found config */
4145                                         if (name != NULL) {
4146                                                 (void) printf("%s\n", name);
4147                                                 dump_nvlist(match, 8);
4148                                                 name = NULL;
4149                                         }
4150                                         (void) printf("%s\n",
4151                                             nvpair_name(elem));
4152                                         dump_nvlist(*configp, 8);
4153                                 } else {
4154                                         match = *configp;
4155                                         name = nvpair_name(elem);
4156                                 }
4157                         }
4158                 }
4159         }
4160         if (count > 1)
4161                 (void) fatal("\tMatched %d pools - use pool GUID "
4162                     "instead of pool name or \n"
4163                     "\tpool name part of a dataset name to select pool", count);
4164
4165         if (sepp)
4166                 *sepp = sep;
4167         /*
4168          * If pool GUID was specified for pool id, replace it with pool name
4169          */
4170         if (name && (strstr(*target, name) != *target)) {
4171                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
4172
4173                 *target = umem_alloc(sz, UMEM_NOFAIL);
4174                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
4175         }
4176
4177         *configp = name ? match : NULL;
4178
4179         return (name);
4180 }
4181
4182 int
4183 main(int argc, char **argv)
4184 {
4185         int i, c;
4186         struct rlimit rl = { 1024, 1024 };
4187         spa_t *spa = NULL;
4188         objset_t *os = NULL;
4189         int dump_all = 1;
4190         int verbose = 0;
4191         int error = 0;
4192         char **searchdirs = NULL;
4193         int nsearch = 0;
4194         char *target;
4195         nvlist_t *policy = NULL;
4196         uint64_t max_txg = UINT64_MAX;
4197         int flags = ZFS_IMPORT_MISSING_LOG;
4198         int rewind = ZPOOL_NEVER_REWIND;
4199         char *spa_config_path_env;
4200         boolean_t target_is_spa = B_TRUE;
4201
4202         (void) setrlimit(RLIMIT_NOFILE, &rl);
4203         (void) enable_extended_FILE_stdio(-1, -1);
4204
4205         dprintf_setup(&argc, argv);
4206
4207         /*
4208          * If there is an environment variable SPA_CONFIG_PATH it overrides
4209          * default spa_config_path setting. If -U flag is specified it will
4210          * override this environment variable settings once again.
4211          */
4212         spa_config_path_env = getenv("SPA_CONFIG_PATH");
4213         if (spa_config_path_env != NULL)
4214                 spa_config_path = spa_config_path_env;
4215
4216         while ((c = getopt(argc, argv,
4217             "AbcCdDeFGhiI:lLmMo:Op:PqRsSt:uU:vVx:X")) != -1) {
4218                 switch (c) {
4219                 case 'b':
4220                 case 'c':
4221                 case 'C':
4222                 case 'd':
4223                 case 'D':
4224                 case 'G':
4225                 case 'h':
4226                 case 'i':
4227                 case 'l':
4228                 case 'm':
4229                 case 'M':
4230                 case 'O':
4231                 case 'R':
4232                 case 's':
4233                 case 'S':
4234                 case 'u':
4235                         dump_opt[c]++;
4236                         dump_all = 0;
4237                         break;
4238                 case 'A':
4239                 case 'e':
4240                 case 'F':
4241                 case 'L':
4242                 case 'P':
4243                 case 'q':
4244                 case 'X':
4245                         dump_opt[c]++;
4246                         break;
4247                 /* NB: Sort single match options below. */
4248                 case 'I':
4249                         max_inflight = strtoull(optarg, NULL, 0);
4250                         if (max_inflight == 0) {
4251                                 (void) fprintf(stderr, "maximum number "
4252                                     "of inflight I/Os must be greater "
4253                                     "than 0\n");
4254                                 usage();
4255                         }
4256                         break;
4257                 case 'o':
4258                         error = set_global_var(optarg);
4259                         if (error != 0)
4260                                 usage();
4261                         break;
4262                 case 'p':
4263                         if (searchdirs == NULL) {
4264                                 searchdirs = umem_alloc(sizeof (char *),
4265                                     UMEM_NOFAIL);
4266                         } else {
4267                                 char **tmp = umem_alloc((nsearch + 1) *
4268                                     sizeof (char *), UMEM_NOFAIL);
4269                                 bcopy(searchdirs, tmp, nsearch *
4270                                     sizeof (char *));
4271                                 umem_free(searchdirs,
4272                                     nsearch * sizeof (char *));
4273                                 searchdirs = tmp;
4274                         }
4275                         searchdirs[nsearch++] = optarg;
4276                         break;
4277                 case 't':
4278                         max_txg = strtoull(optarg, NULL, 0);
4279                         if (max_txg < TXG_INITIAL) {
4280                                 (void) fprintf(stderr, "incorrect txg "
4281                                     "specified: %s\n", optarg);
4282                                 usage();
4283                         }
4284                         break;
4285                 case 'U':
4286                         spa_config_path = optarg;
4287                         break;
4288                 case 'v':
4289                         verbose++;
4290                         break;
4291                 case 'V':
4292                         flags |= ZFS_IMPORT_VERBATIM;
4293                         break;
4294                 case 'x':
4295                         vn_dumpdir = optarg;
4296                         break;
4297                 default:
4298                         usage();
4299                         break;
4300                 }
4301         }
4302
4303         if (!dump_opt['e'] && searchdirs != NULL) {
4304                 (void) fprintf(stderr, "-p option requires use of -e\n");
4305                 usage();
4306         }
4307
4308 #if defined(_LP64)
4309         /*
4310          * ZDB does not typically re-read blocks; therefore limit the ARC
4311          * to 256 MB, which can be used entirely for metadata.
4312          */
4313         zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
4314 #endif
4315
4316         /*
4317          * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
4318          * "zdb -b" uses traversal prefetch which uses async reads.
4319          * For good performance, let several of them be active at once.
4320          */
4321         zfs_vdev_async_read_max_active = 10;
4322
4323         /*
4324          * Disable reference tracking for better performance.
4325          */
4326         reference_tracking_enable = B_FALSE;
4327
4328         kernel_init(FREAD);
4329         if ((g_zfs = libzfs_init()) == NULL) {
4330                 (void) fprintf(stderr, "%s", libzfs_error_init(errno));
4331                 return (1);
4332         }
4333
4334         if (dump_all)
4335                 verbose = MAX(verbose, 1);
4336
4337         for (c = 0; c < 256; c++) {
4338                 if (dump_all && strchr("AeFlLOPRSX", c) == NULL)
4339                         dump_opt[c] = 1;
4340                 if (dump_opt[c])
4341                         dump_opt[c] += verbose;
4342         }
4343
4344         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
4345         zfs_recover = (dump_opt['A'] > 1);
4346
4347         argc -= optind;
4348         argv += optind;
4349
4350         if (argc < 2 && dump_opt['R'])
4351                 usage();
4352         if (argc < 1) {
4353                 if (!dump_opt['e'] && dump_opt['C']) {
4354                         dump_cachefile(spa_config_path);
4355                         return (0);
4356                 }
4357                 usage();
4358         }
4359
4360         if (dump_opt['l'])
4361                 return (dump_label(argv[0]));
4362
4363         if (dump_opt['O']) {
4364                 if (argc != 2)
4365                         usage();
4366                 dump_opt['v'] = verbose + 3;
4367                 return (dump_path(argv[0], argv[1]));
4368         }
4369
4370         if (dump_opt['X'] || dump_opt['F'])
4371                 rewind = ZPOOL_DO_REWIND |
4372                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
4373
4374         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
4375             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
4376             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
4377                 fatal("internal error: %s", strerror(ENOMEM));
4378
4379         error = 0;
4380         target = argv[0];
4381
4382         if (dump_opt['e']) {
4383                 nvlist_t *cfg = NULL;
4384                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
4385
4386                 error = ENOENT;
4387                 if (name) {
4388                         if (dump_opt['C'] > 1) {
4389                                 (void) printf("\nConfiguration for import:\n");
4390                                 dump_nvlist(cfg, 8);
4391                         }
4392                         if (nvlist_add_nvlist(cfg,
4393                             ZPOOL_REWIND_POLICY, policy) != 0) {
4394                                 fatal("can't open '%s': %s",
4395                                     target, strerror(ENOMEM));
4396                         }
4397                         error = spa_import(name, cfg, NULL, flags);
4398                 }
4399         }
4400
4401         if (strpbrk(target, "/@") != NULL) {
4402                 size_t targetlen;
4403
4404                 target_is_spa = B_FALSE;
4405                 targetlen = strlen(target);
4406                 if (targetlen && target[targetlen - 1] == '/')
4407                         target[targetlen - 1] = '\0';
4408         }
4409
4410         if (error == 0) {
4411                 if (target_is_spa || dump_opt['R']) {
4412                         error = spa_open_rewind(target, &spa, FTAG, policy,
4413                             NULL);
4414                         if (error) {
4415                                 /*
4416                                  * If we're missing the log device then
4417                                  * try opening the pool after clearing the
4418                                  * log state.
4419                                  */
4420                                 mutex_enter(&spa_namespace_lock);
4421                                 if ((spa = spa_lookup(target)) != NULL &&
4422                                     spa->spa_log_state == SPA_LOG_MISSING) {
4423                                         spa->spa_log_state = SPA_LOG_CLEAR;
4424                                         error = 0;
4425                                 }
4426                                 mutex_exit(&spa_namespace_lock);
4427
4428                                 if (!error) {
4429                                         error = spa_open_rewind(target, &spa,
4430                                             FTAG, policy, NULL);
4431                                 }
4432                         }
4433                 } else {
4434                         error = open_objset(target, DMU_OST_ANY, FTAG, &os);
4435                 }
4436         }
4437         nvlist_free(policy);
4438
4439         if (error)
4440                 fatal("can't open '%s': %s", target, strerror(error));
4441
4442         argv++;
4443         argc--;
4444         if (!dump_opt['R']) {
4445                 if (argc > 0) {
4446                         zopt_objects = argc;
4447                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
4448                         for (i = 0; i < zopt_objects; i++) {
4449                                 errno = 0;
4450                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
4451                                 if (zopt_object[i] == 0 && errno != 0)
4452                                         fatal("bad number %s: %s",
4453                                             argv[i], strerror(errno));
4454                         }
4455                 }
4456                 if (os != NULL) {
4457                         dump_dir(os);
4458                 } else if (zopt_objects > 0 && !dump_opt['m']) {
4459                         dump_dir(spa->spa_meta_objset);
4460                 } else {
4461                         dump_zpool(spa);
4462                 }
4463         } else {
4464                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
4465                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
4466                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
4467                 flagbits['e'] = ZDB_FLAG_BSWAP;
4468                 flagbits['g'] = ZDB_FLAG_GBH;
4469                 flagbits['i'] = ZDB_FLAG_INDIRECT;
4470                 flagbits['p'] = ZDB_FLAG_PHYS;
4471                 flagbits['r'] = ZDB_FLAG_RAW;
4472
4473                 for (i = 0; i < argc; i++)
4474                         zdb_read_block(argv[i], spa);
4475         }
4476
4477         if (os != NULL)
4478                 close_objset(os, FTAG);
4479         else
4480                 spa_close(spa, FTAG);
4481
4482         fuid_table_destroy();
4483
4484         dump_debug_buffer();
4485
4486         libzfs_fini(g_zfs);
4487         kernel_fini();
4488
4489         return (0);
4490 }