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 <sys/blkptr.h>
  67 #include <zfs_comutil.h>
  68 #include <libzfs.h>
  69
  70 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?        \
  71         zio_compress_table[(idx)].ci_name : "UNKNOWN")
  72 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?        \
  73         zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  74 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :             \
  75         (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
  76         DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
  77
  78 static char *
  79 zdb_ot_name(dmu_object_type_t type)
  80 {
  81         if (type < DMU_OT_NUMTYPES)
  82                 return (dmu_ot[type].ot_name);
  83         else if ((type & DMU_OT_NEWTYPE) &&
  84             ((type & DMU_OT_BYTESWAP_MASK) < DMU_BSWAP_NUMFUNCS))
  85                 return (dmu_ot_byteswap[type & DMU_OT_BYTESWAP_MASK].ob_name);
  86         else
  87                 return ("UNKNOWN");
  88 }
  89
  90 extern int reference_tracking_enable;
  91 extern int zfs_recover;
  92 extern uint64_t zfs_arc_max, zfs_arc_meta_limit;
  93 extern int zfs_vdev_async_read_max_active;
  94
  95 const char cmdname[] = "zdb";
  96 uint8_t dump_opt[256];
  97
  98 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  99
 100 extern void dump_intent_log(zilog_t *);
 101 uint64_t *zopt_object = NULL;
 102 int zopt_objects = 0;
 103 libzfs_handle_t *g_zfs;
 104 uint64_t max_inflight = 1000;
 105
 106 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *);
 107
 108 /*
 109  * These libumem hooks provide a reasonable set of defaults for the allocator's
 110  * debugging facilities.
 111  */
 112 const char *
 113 _umem_debug_init(void)
 114 {
 115         return ("default,verbose"); /* $UMEM_DEBUG setting */
 116 }
 117
 118 const char *
 119 _umem_logging_init(void)
 120 {
 121         return ("fail,contents"); /* $UMEM_LOGGING setting */
 122 }
 123
 124 static void
 125 usage(void)
 126 {
 127         (void) fprintf(stderr,
 128             "Usage:\t%s [-AbcdDFGhiLMPsvX] [-e [-V] [-p <path> ...]] "
 129             "[-I <inflight I/Os>]\n"
 130             "\t\t[-o <var>=<value>]... [-t <txg>] [-U <cache>] [-x <dumpdir>]\n"
 131             "\t\t[<poolname> [<object> ...]]\n"
 132             "\t%s [-AdiPv] [-e [-V] [-p <path> ...]] [-U <cache>] <dataset> "
 133             "[<object> ...]\n"
 134             "\t%s -C [-A] [-U <cache>]\n"
 135             "\t%s -l [-Aqu] <device>\n"
 136             "\t%s -m [-AFLPX] [-e [-V] [-p <path> ...]] [-t <txg>] "
 137             "[-U <cache>]\n\t\t<poolname> [<vdev> [<metaslab> ...]]\n"
 138             "\t%s -O <dataset> <path>\n"
 139             "\t%s -R [-A] [-e [-V] [-p <path> ...]] [-U <cache>]\n"
 140             "\t\t<poolname> <vdev>:<offset>:<size>[:<flags>]\n"
 141             "\t%s -E [-A] word0:word1:...:word15\n"
 142             "\t%s -S [-AP] [-e [-V] [-p <path> ...]] [-U <cache>] "
 143             "<poolname>\n\n",
 144             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname,
 145             cmdname, cmdname);
 146
 147         (void) fprintf(stderr, "    Dataset name must include at least one "
 148             "separator character '/' or '@'\n");
 149         (void) fprintf(stderr, "    If dataset name is specified, only that "
 150             "dataset is dumped\n");
 151         (void) fprintf(stderr, "    If object numbers are specified, only "
 152             "those objects are dumped\n\n");
 153         (void) fprintf(stderr, "    Options to control amount of output:\n");
 154         (void) fprintf(stderr, "        -b block statistics\n");
 155         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 156             "all data) blocks\n");
 157         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 158         (void) fprintf(stderr, "        -d dataset(s)\n");
 159         (void) fprintf(stderr, "        -D dedup statistics\n");
 160         (void) fprintf(stderr, "        -E decode and display block from an "
 161             "embedded block pointer\n");
 162         (void) fprintf(stderr, "        -h pool history\n");
 163         (void) fprintf(stderr, "        -i intent logs\n");
 164         (void) fprintf(stderr, "        -l read label contents\n");
 165         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 166             "load spacemaps)\n");
 167         (void) fprintf(stderr, "        -m metaslabs\n");
 168         (void) fprintf(stderr, "        -M metaslab groups\n");
 169         (void) fprintf(stderr, "        -O perform object lookups by path\n");
 170         (void) fprintf(stderr, "        -R read and display block from a "
 171             "device\n");
 172         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 173         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 174         (void) fprintf(stderr, "        -v verbose (applies to all "
 175             "others)\n\n");
 176         (void) fprintf(stderr, "    Below options are intended for use "
 177             "with other options:\n");
 178         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 179             "panic recovery (-AA) or both (-AAA)\n");
 180         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 181             "has altroot/not in a cachefile\n");
 182         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 183             "safe range of transaction groups\n");
 184         (void) fprintf(stderr, "        -G dump zfs_dbgmsg buffer before "
 185             "exiting\n");
 186         (void) fprintf(stderr, "        -I <number of inflight I/Os> -- "
 187             "specify the maximum number of\n           "
 188             "checksumming I/Os [default is 200]\n");
 189         (void) fprintf(stderr, "        -o <variable>=<value> set global "
 190             "variable to an unsigned 32-bit integer\n");
 191         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 192             "-e to specify path to vdev dir\n");
 193         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 194         (void) fprintf(stderr, "        -q don't print label contents\n");
 195         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 196             "searching for uberblocks\n");
 197         (void) fprintf(stderr, "        -u uberblock\n");
 198         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 199             "cachefile\n");
 200         (void) fprintf(stderr, "        -V do verbatim import\n");
 201         (void) fprintf(stderr, "        -x <dumpdir> -- "
 202             "dump all read blocks into specified directory\n");
 203         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 204             "work with dataset)\n");
 205         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 206             "to make only that option verbose\n");
 207         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 208         exit(1);
 209 }
 210
 211 static void
 212 dump_debug_buffer(void)
 213 {
 214         if (dump_opt['G']) {
 215                 (void) printf("\n");
 216                 zfs_dbgmsg_print("zdb");
 217         }
 218 }
 219
 220 /*
 221  * Called for usage errors that are discovered after a call to spa_open(),
 222  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 223  */
 224
 225 static void
 226 fatal(const char *fmt, ...)
 227 {
 228         va_list ap;
 229
 230         va_start(ap, fmt);
 231         (void) fprintf(stderr, "%s: ", cmdname);
 232         (void) vfprintf(stderr, fmt, ap);
 233         va_end(ap);
 234         (void) fprintf(stderr, "\n");
 235
 236         dump_debug_buffer();
 237
 238         exit(1);
 239 }
 240
 241 /* ARGSUSED */
 242 static void
 243 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 244 {
 245         nvlist_t *nv;
 246         size_t nvsize = *(uint64_t *)data;
 247         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 248
 249         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 250
 251         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 252
 253         umem_free(packed, nvsize);
 254
 255         dump_nvlist(nv, 8);
 256
 257         nvlist_free(nv);
 258 }
 259
 260 /* ARGSUSED */
 261 static void
 262 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
 263 {
 264         spa_history_phys_t *shp = data;
 265
 266         if (shp == NULL)
 267                 return;
 268
 269         (void) printf("\t\tpool_create_len = %llu\n",
 270             (u_longlong_t)shp->sh_pool_create_len);
 271         (void) printf("\t\tphys_max_off = %llu\n",
 272             (u_longlong_t)shp->sh_phys_max_off);
 273         (void) printf("\t\tbof = %llu\n",
 274             (u_longlong_t)shp->sh_bof);
 275         (void) printf("\t\teof = %llu\n",
 276             (u_longlong_t)shp->sh_eof);
 277         (void) printf("\t\trecords_lost = %llu\n",
 278             (u_longlong_t)shp->sh_records_lost);
 279 }
 280
 281 static void
 282 zdb_nicenum(uint64_t num, char *buf)
 283 {
 284         if (dump_opt['P'])
 285                 (void) sprintf(buf, "%llu", (longlong_t)num);
 286         else
 287                 nicenum(num, buf);
 288 }
 289
 290 const char histo_stars[] = "****************************************";
 291 const int histo_width = sizeof (histo_stars) - 1;
 292
 293 static void
 294 dump_histogram(const uint64_t *histo, int size, int offset)
 295 {
 296         int i;
 297         int minidx = size - 1;
 298         int maxidx = 0;
 299         uint64_t max = 0;
 300
 301         for (i = 0; i < size; i++) {
 302                 if (histo[i] > max)
 303                         max = histo[i];
 304                 if (histo[i] > 0 && i > maxidx)
 305                         maxidx = i;
 306                 if (histo[i] > 0 && i < minidx)
 307                         minidx = i;
 308         }
 309
 310         if (max < histo_width)
 311                 max = histo_width;
 312
 313         for (i = minidx; i <= maxidx; i++) {
 314                 (void) printf("\t\t\t%3u: %6llu %s\n",
 315                     i + offset, (u_longlong_t)histo[i],
 316                     &histo_stars[(max - histo[i]) * histo_width / max]);
 317         }
 318 }
 319
 320 static void
 321 dump_zap_stats(objset_t *os, uint64_t object)
 322 {
 323         int error;
 324         zap_stats_t zs;
 325
 326         error = zap_get_stats(os, object, &zs);
 327         if (error)
 328                 return;
 329
 330         if (zs.zs_ptrtbl_len == 0) {
 331                 ASSERT(zs.zs_num_blocks == 1);
 332                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 333                     (u_longlong_t)zs.zs_blocksize,
 334                     (u_longlong_t)zs.zs_num_entries);
 335                 return;
 336         }
 337
 338         (void) printf("\tFat ZAP stats:\n");
 339
 340         (void) printf("\t\tPointer table:\n");
 341         (void) printf("\t\t\t%llu elements\n",
 342             (u_longlong_t)zs.zs_ptrtbl_len);
 343         (void) printf("\t\t\tzt_blk: %llu\n",
 344             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 345         (void) printf("\t\t\tzt_numblks: %llu\n",
 346             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 347         (void) printf("\t\t\tzt_shift: %llu\n",
 348             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 349         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 350             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 351         (void) printf("\t\t\tzt_nextblk: %llu\n",
 352             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 353
 354         (void) printf("\t\tZAP entries: %llu\n",
 355             (u_longlong_t)zs.zs_num_entries);
 356         (void) printf("\t\tLeaf blocks: %llu\n",
 357             (u_longlong_t)zs.zs_num_leafs);
 358         (void) printf("\t\tTotal blocks: %llu\n",
 359             (u_longlong_t)zs.zs_num_blocks);
 360         (void) printf("\t\tzap_block_type: 0x%llx\n",
 361             (u_longlong_t)zs.zs_block_type);
 362         (void) printf("\t\tzap_magic: 0x%llx\n",
 363             (u_longlong_t)zs.zs_magic);
 364         (void) printf("\t\tzap_salt: 0x%llx\n",
 365             (u_longlong_t)zs.zs_salt);
 366
 367         (void) printf("\t\tLeafs with 2^n pointers:\n");
 368         dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
 369
 370         (void) printf("\t\tBlocks with n*5 entries:\n");
 371         dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
 372
 373         (void) printf("\t\tBlocks n/10 full:\n");
 374         dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
 375
 376         (void) printf("\t\tEntries with n chunks:\n");
 377         dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
 378
 379         (void) printf("\t\tBuckets with n entries:\n");
 380         dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
 381 }
 382
 383 /*ARGSUSED*/
 384 static void
 385 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 386 {
 387 }
 388
 389 /*ARGSUSED*/
 390 static void
 391 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 392 {
 393         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 394 }
 395
 396 /*ARGSUSED*/
 397 void
 398 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 399 {
 400 }
 401
 402 /*ARGSUSED*/
 403 static void
 404 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 405 {
 406 }
 407
 408 /*ARGSUSED*/
 409 static void
 410 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 411 {
 412         zap_cursor_t zc;
 413         zap_attribute_t attr;
 414         void *prop;
 415         int i;
 416
 417         dump_zap_stats(os, object);
 418         (void) printf("\n");
 419
 420         for (zap_cursor_init(&zc, os, object);
 421             zap_cursor_retrieve(&zc, &attr) == 0;
 422             zap_cursor_advance(&zc)) {
 423                 (void) printf("\t\t%s = ", attr.za_name);
 424                 if (attr.za_num_integers == 0) {
 425                         (void) printf("\n");
 426                         continue;
 427                 }
 428                 prop = umem_zalloc(attr.za_num_integers *
 429                     attr.za_integer_length, UMEM_NOFAIL);
 430                 (void) zap_lookup(os, object, attr.za_name,
 431                     attr.za_integer_length, attr.za_num_integers, prop);
 432                 if (attr.za_integer_length == 1) {
 433                         (void) printf("%s", (char *)prop);
 434                 } else {
 435                         for (i = 0; i < attr.za_num_integers; i++) {
 436                                 switch (attr.za_integer_length) {
 437                                 case 2:
 438                                         (void) printf("%u ",
 439                                             ((uint16_t *)prop)[i]);
 440                                         break;
 441                                 case 4:
 442                                         (void) printf("%u ",
 443                                             ((uint32_t *)prop)[i]);
 444                                         break;
 445                                 case 8:
 446                                         (void) printf("%lld ",
 447                                             (u_longlong_t)((int64_t *)prop)[i]);
 448                                         break;
 449                                 }
 450                         }
 451                 }
 452                 (void) printf("\n");
 453                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 454         }
 455         zap_cursor_fini(&zc);
 456 }
 457
 458 static void
 459 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size)
 460 {
 461         bpobj_phys_t *bpop = data;
 462         uint64_t i;
 463         char bytes[32], comp[32], uncomp[32];
 464
 465         if (bpop == NULL)
 466                 return;
 467
 468         zdb_nicenum(bpop->bpo_bytes, bytes);
 469         zdb_nicenum(bpop->bpo_comp, comp);
 470         zdb_nicenum(bpop->bpo_uncomp, uncomp);
 471
 472         (void) printf("\t\tnum_blkptrs = %llu\n",
 473             (u_longlong_t)bpop->bpo_num_blkptrs);
 474         (void) printf("\t\tbytes = %s\n", bytes);
 475         if (size >= BPOBJ_SIZE_V1) {
 476                 (void) printf("\t\tcomp = %s\n", comp);
 477                 (void) printf("\t\tuncomp = %s\n", uncomp);
 478         }
 479         if (size >= sizeof (*bpop)) {
 480                 (void) printf("\t\tsubobjs = %llu\n",
 481                     (u_longlong_t)bpop->bpo_subobjs);
 482                 (void) printf("\t\tnum_subobjs = %llu\n",
 483                     (u_longlong_t)bpop->bpo_num_subobjs);
 484         }
 485
 486         if (dump_opt['d'] < 5)
 487                 return;
 488
 489         for (i = 0; i < bpop->bpo_num_blkptrs; i++) {
 490                 char blkbuf[BP_SPRINTF_LEN];
 491                 blkptr_t bp;
 492
 493                 int err = dmu_read(os, object,
 494                     i * sizeof (bp), sizeof (bp), &bp, 0);
 495                 if (err != 0) {
 496                         (void) printf("got error %u from dmu_read\n", err);
 497                         break;
 498                 }
 499                 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp);
 500                 (void) printf("\t%s\n", blkbuf);
 501         }
 502 }
 503
 504 /* ARGSUSED */
 505 static void
 506 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size)
 507 {
 508         dmu_object_info_t doi;
 509         int64_t i;
 510
 511         VERIFY0(dmu_object_info(os, object, &doi));
 512         uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP);
 513
 514         int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0);
 515         if (err != 0) {
 516                 (void) printf("got error %u from dmu_read\n", err);
 517                 kmem_free(subobjs, doi.doi_max_offset);
 518                 return;
 519         }
 520
 521         int64_t last_nonzero = -1;
 522         for (i = 0; i < doi.doi_max_offset / 8; i++) {
 523                 if (subobjs[i] != 0)
 524                         last_nonzero = i;
 525         }
 526
 527         for (i = 0; i <= last_nonzero; i++) {
 528                 (void) printf("\t%llu\n", (u_longlong_t)subobjs[i]);
 529         }
 530         kmem_free(subobjs, doi.doi_max_offset);
 531 }
 532
 533 /*ARGSUSED*/
 534 static void
 535 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 536 {
 537         dump_zap_stats(os, object);
 538         /* contents are printed elsewhere, properly decoded */
 539 }
 540
 541 /*ARGSUSED*/
 542 static void
 543 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 544 {
 545         zap_cursor_t zc;
 546         zap_attribute_t attr;
 547
 548         dump_zap_stats(os, object);
 549         (void) printf("\n");
 550
 551         for (zap_cursor_init(&zc, os, object);
 552             zap_cursor_retrieve(&zc, &attr) == 0;
 553             zap_cursor_advance(&zc)) {
 554                 (void) printf("\t\t%s = ", attr.za_name);
 555                 if (attr.za_num_integers == 0) {
 556                         (void) printf("\n");
 557                         continue;
 558                 }
 559                 (void) printf(" %llx : [%d:%d:%d]\n",
 560                     (u_longlong_t)attr.za_first_integer,
 561                     (int)ATTR_LENGTH(attr.za_first_integer),
 562                     (int)ATTR_BSWAP(attr.za_first_integer),
 563                     (int)ATTR_NUM(attr.za_first_integer));
 564         }
 565         zap_cursor_fini(&zc);
 566 }
 567
 568 /*ARGSUSED*/
 569 static void
 570 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 571 {
 572         zap_cursor_t zc;
 573         zap_attribute_t attr;
 574         uint16_t *layout_attrs;
 575         int i;
 576
 577         dump_zap_stats(os, object);
 578         (void) printf("\n");
 579
 580         for (zap_cursor_init(&zc, os, object);
 581             zap_cursor_retrieve(&zc, &attr) == 0;
 582             zap_cursor_advance(&zc)) {
 583                 (void) printf("\t\t%s = [", attr.za_name);
 584                 if (attr.za_num_integers == 0) {
 585                         (void) printf("\n");
 586                         continue;
 587                 }
 588
 589                 VERIFY(attr.za_integer_length == 2);
 590                 layout_attrs = umem_zalloc(attr.za_num_integers *
 591                     attr.za_integer_length, UMEM_NOFAIL);
 592
 593                 VERIFY(zap_lookup(os, object, attr.za_name,
 594                     attr.za_integer_length,
 595                     attr.za_num_integers, layout_attrs) == 0);
 596
 597                 for (i = 0; i != attr.za_num_integers; i++)
 598                         (void) printf(" %d ", (int)layout_attrs[i]);
 599                 (void) printf("]\n");
 600                 umem_free(layout_attrs,
 601                     attr.za_num_integers * attr.za_integer_length);
 602         }
 603         zap_cursor_fini(&zc);
 604 }
 605
 606 /*ARGSUSED*/
 607 static void
 608 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 609 {
 610         zap_cursor_t zc;
 611         zap_attribute_t attr;
 612         const char *typenames[] = {
 613                 /* 0 */ "not specified",
 614                 /* 1 */ "FIFO",
 615                 /* 2 */ "Character Device",
 616                 /* 3 */ "3 (invalid)",
 617                 /* 4 */ "Directory",
 618                 /* 5 */ "5 (invalid)",
 619                 /* 6 */ "Block Device",
 620                 /* 7 */ "7 (invalid)",
 621                 /* 8 */ "Regular File",
 622                 /* 9 */ "9 (invalid)",
 623                 /* 10 */ "Symbolic Link",
 624                 /* 11 */ "11 (invalid)",
 625                 /* 12 */ "Socket",
 626                 /* 13 */ "Door",
 627                 /* 14 */ "Event Port",
 628                 /* 15 */ "15 (invalid)",
 629         };
 630
 631         dump_zap_stats(os, object);
 632         (void) printf("\n");
 633
 634         for (zap_cursor_init(&zc, os, object);
 635             zap_cursor_retrieve(&zc, &attr) == 0;
 636             zap_cursor_advance(&zc)) {
 637                 (void) printf("\t\t%s = %lld (type: %s)\n",
 638                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 639                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 640         }
 641         zap_cursor_fini(&zc);
 642 }
 643
 644 int
 645 get_dtl_refcount(vdev_t *vd)
 646 {
 647         int refcount = 0;
 648         int c;
 649
 650         if (vd->vdev_ops->vdev_op_leaf) {
 651                 space_map_t *sm = vd->vdev_dtl_sm;
 652
 653                 if (sm != NULL &&
 654                     sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 655                         return (1);
 656                 return (0);
 657         }
 658
 659         for (c = 0; c < vd->vdev_children; c++)
 660                 refcount += get_dtl_refcount(vd->vdev_child[c]);
 661         return (refcount);
 662 }
 663
 664 int
 665 get_metaslab_refcount(vdev_t *vd)
 666 {
 667         int refcount = 0;
 668         int c, m;
 669
 670         if (vd->vdev_top == vd && !vd->vdev_removing) {
 671                 for (m = 0; m < vd->vdev_ms_count; m++) {
 672                         space_map_t *sm = vd->vdev_ms[m]->ms_sm;
 673
 674                         if (sm != NULL &&
 675                             sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 676                                 refcount++;
 677                 }
 678         }
 679         for (c = 0; c < vd->vdev_children; c++)
 680                 refcount += get_metaslab_refcount(vd->vdev_child[c]);
 681
 682         return (refcount);
 683 }
 684
 685 static int
 686 verify_spacemap_refcounts(spa_t *spa)
 687 {
 688         uint64_t expected_refcount = 0;
 689         uint64_t actual_refcount;
 690
 691         (void) feature_get_refcount(spa,
 692             &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
 693             &expected_refcount);
 694         actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
 695         actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
 696
 697         if (expected_refcount != actual_refcount) {
 698                 (void) printf("space map refcount mismatch: expected %lld != "
 699                     "actual %lld\n",
 700                     (longlong_t)expected_refcount,
 701                     (longlong_t)actual_refcount);
 702                 return (2);
 703         }
 704         return (0);
 705 }
 706
 707 static void
 708 dump_spacemap(objset_t *os, space_map_t *sm)
 709 {
 710         uint64_t alloc, offset, entry;
 711         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 712                             "INVALID", "INVALID", "INVALID", "INVALID" };
 713
 714         if (sm == NULL)
 715                 return;
 716
 717         /*
 718          * Print out the freelist entries in both encoded and decoded form.
 719          */
 720         alloc = 0;
 721         for (offset = 0; offset < space_map_length(sm);
 722             offset += sizeof (entry)) {
 723                 uint8_t mapshift = sm->sm_shift;
 724
 725                 VERIFY0(dmu_read(os, space_map_object(sm), offset,
 726                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 727                 if (SM_DEBUG_DECODE(entry)) {
 728
 729                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 730                             (u_longlong_t)(offset / sizeof (entry)),
 731                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 732                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 733                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 734                 } else {
 735                         (void) printf("\t    [%6llu]    %c  range:"
 736                             " %010llx-%010llx  size: %06llx\n",
 737                             (u_longlong_t)(offset / sizeof (entry)),
 738                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 739                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 740                             mapshift) + sm->sm_start),
 741                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 742                             mapshift) + sm->sm_start +
 743                             (SM_RUN_DECODE(entry) << mapshift)),
 744                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 745                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 746                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 747                         else
 748                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 749                 }
 750         }
 751         if (alloc != space_map_allocated(sm)) {
 752                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 753                     "with space map summary (%llu)\n",
 754                     (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
 755         }
 756 }
 757
 758 static void
 759 dump_metaslab_stats(metaslab_t *msp)
 760 {
 761         char maxbuf[32];
 762         range_tree_t *rt = msp->ms_tree;
 763         avl_tree_t *t = &msp->ms_size_tree;
 764         int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
 765
 766         zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
 767
 768         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 769             "segments", avl_numnodes(t), "maxsize", maxbuf,
 770             "freepct", free_pct);
 771         (void) printf("\tIn-memory histogram:\n");
 772         dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 773 }
 774
 775 static void
 776 dump_metaslab(metaslab_t *msp)
 777 {
 778         vdev_t *vd = msp->ms_group->mg_vd;
 779         spa_t *spa = vd->vdev_spa;
 780         space_map_t *sm = msp->ms_sm;
 781         char freebuf[32];
 782
 783         zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
 784
 785         (void) printf(
 786             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 787             (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
 788             (u_longlong_t)space_map_object(sm), freebuf);
 789
 790         if (dump_opt['m'] > 2 && !dump_opt['L']) {
 791                 mutex_enter(&msp->ms_lock);
 792                 metaslab_load_wait(msp);
 793                 if (!msp->ms_loaded) {
 794                         VERIFY0(metaslab_load(msp));
 795                         range_tree_stat_verify(msp->ms_tree);
 796                 }
 797                 dump_metaslab_stats(msp);
 798                 metaslab_unload(msp);
 799                 mutex_exit(&msp->ms_lock);
 800         }
 801
 802         if (dump_opt['m'] > 1 && sm != NULL &&
 803             spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
 804                 /*
 805                  * The space map histogram represents free space in chunks
 806                  * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
 807                  */
 808                 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
 809                     (u_longlong_t)msp->ms_fragmentation);
 810                 dump_histogram(sm->sm_phys->smp_histogram,
 811                     SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
 812         }
 813
 814         if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
 815                 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
 816
 817                 mutex_enter(&msp->ms_lock);
 818                 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
 819                 mutex_exit(&msp->ms_lock);
 820         }
 821 }
 822
 823 static void
 824 print_vdev_metaslab_header(vdev_t *vd)
 825 {
 826         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 827             (u_longlong_t)vd->vdev_id,
 828             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 829             "offset", "spacemap", "free");
 830         (void) printf("\t%15s   %19s   %15s   %10s\n",
 831             "---------------", "-------------------",
 832             "---------------", "-------------");
 833 }
 834
 835 static void
 836 dump_metaslab_groups(spa_t *spa)
 837 {
 838         vdev_t *rvd = spa->spa_root_vdev;
 839         metaslab_class_t *mc = spa_normal_class(spa);
 840         uint64_t fragmentation;
 841         int c;
 842
 843         metaslab_class_histogram_verify(mc);
 844
 845         for (c = 0; c < rvd->vdev_children; c++) {
 846                 vdev_t *tvd = rvd->vdev_child[c];
 847                 metaslab_group_t *mg = tvd->vdev_mg;
 848
 849                 if (mg->mg_class != mc)
 850                         continue;
 851
 852                 metaslab_group_histogram_verify(mg);
 853                 mg->mg_fragmentation = metaslab_group_fragmentation(mg);
 854
 855                 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
 856                     "fragmentation",
 857                     (u_longlong_t)tvd->vdev_id,
 858                     (u_longlong_t)tvd->vdev_ms_count);
 859                 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
 860                         (void) printf("%3s\n", "-");
 861                 } else {
 862                         (void) printf("%3llu%%\n",
 863                             (u_longlong_t)mg->mg_fragmentation);
 864                 }
 865                 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 866         }
 867
 868         (void) printf("\tpool %s\tfragmentation", spa_name(spa));
 869         fragmentation = metaslab_class_fragmentation(mc);
 870         if (fragmentation == ZFS_FRAG_INVALID)
 871                 (void) printf("\t%3s\n", "-");
 872         else
 873                 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
 874         dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 875 }
 876
 877 static void
 878 dump_metaslabs(spa_t *spa)
 879 {
 880         vdev_t *vd, *rvd = spa->spa_root_vdev;
 881         uint64_t m, c = 0, children = rvd->vdev_children;
 882
 883         (void) printf("\nMetaslabs:\n");
 884
 885         if (!dump_opt['d'] && zopt_objects > 0) {
 886                 c = zopt_object[0];
 887
 888                 if (c >= children)
 889                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 890
 891                 if (zopt_objects > 1) {
 892                         vd = rvd->vdev_child[c];
 893                         print_vdev_metaslab_header(vd);
 894
 895                         for (m = 1; m < zopt_objects; m++) {
 896                                 if (zopt_object[m] < vd->vdev_ms_count)
 897                                         dump_metaslab(
 898                                             vd->vdev_ms[zopt_object[m]]);
 899                                 else
 900                                         (void) fprintf(stderr, "bad metaslab "
 901                                             "number %llu\n",
 902                                             (u_longlong_t)zopt_object[m]);
 903                         }
 904                         (void) printf("\n");
 905                         return;
 906                 }
 907                 children = c + 1;
 908         }
 909         for (; c < children; c++) {
 910                 vd = rvd->vdev_child[c];
 911                 print_vdev_metaslab_header(vd);
 912
 913                 for (m = 0; m < vd->vdev_ms_count; m++)
 914                         dump_metaslab(vd->vdev_ms[m]);
 915                 (void) printf("\n");
 916         }
 917 }
 918
 919 static void
 920 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 921 {
 922         const ddt_phys_t *ddp = dde->dde_phys;
 923         const ddt_key_t *ddk = &dde->dde_key;
 924         char *types[4] = { "ditto", "single", "double", "triple" };
 925         char blkbuf[BP_SPRINTF_LEN];
 926         blkptr_t blk;
 927         int p;
 928
 929         for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 930                 if (ddp->ddp_phys_birth == 0)
 931                         continue;
 932                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 933                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
 934                 (void) printf("index %llx refcnt %llu %s %s\n",
 935                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 936                     types[p], blkbuf);
 937         }
 938 }
 939
 940 static void
 941 dump_dedup_ratio(const ddt_stat_t *dds)
 942 {
 943         double rL, rP, rD, D, dedup, compress, copies;
 944
 945         if (dds->dds_blocks == 0)
 946                 return;
 947
 948         rL = (double)dds->dds_ref_lsize;
 949         rP = (double)dds->dds_ref_psize;
 950         rD = (double)dds->dds_ref_dsize;
 951         D = (double)dds->dds_dsize;
 952
 953         dedup = rD / D;
 954         compress = rL / rP;
 955         copies = rD / rP;
 956
 957         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 958             "dedup * compress / copies = %.2f\n\n",
 959             dedup, compress, copies, dedup * compress / copies);
 960 }
 961
 962 static void
 963 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 964 {
 965         char name[DDT_NAMELEN];
 966         ddt_entry_t dde;
 967         uint64_t walk = 0;
 968         dmu_object_info_t doi;
 969         uint64_t count, dspace, mspace;
 970         int error;
 971
 972         error = ddt_object_info(ddt, type, class, &doi);
 973
 974         if (error == ENOENT)
 975                 return;
 976         ASSERT(error == 0);
 977
 978         error = ddt_object_count(ddt, type, class, &count);
 979         ASSERT(error == 0);
 980         if (count == 0)
 981                 return;
 982
 983         dspace = doi.doi_physical_blocks_512 << 9;
 984         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 985
 986         ddt_object_name(ddt, type, class, name);
 987
 988         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 989             name,
 990             (u_longlong_t)count,
 991             (u_longlong_t)(dspace / count),
 992             (u_longlong_t)(mspace / count));
 993
 994         if (dump_opt['D'] < 3)
 995                 return;
 996
 997         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 998
 999         if (dump_opt['D'] < 4)
1000                 return;
1001
1002         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
1003                 return;
1004
1005         (void) printf("%s contents:\n\n", name);
1006
1007         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
1008                 dump_dde(ddt, &dde, walk);
1009
1010         ASSERT(error == ENOENT);
1011
1012         (void) printf("\n");
1013 }
1014
1015 static void
1016 dump_all_ddts(spa_t *spa)
1017 {
1018         ddt_histogram_t ddh_total;
1019         ddt_stat_t dds_total;
1020         enum zio_checksum c;
1021         enum ddt_type type;
1022         enum ddt_class class;
1023
1024         bzero(&ddh_total, sizeof (ddt_histogram_t));
1025         bzero(&dds_total, sizeof (ddt_stat_t));
1026
1027         for (c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
1028                 ddt_t *ddt = spa->spa_ddt[c];
1029                 for (type = 0; type < DDT_TYPES; type++) {
1030                         for (class = 0; class < DDT_CLASSES;
1031                             class++) {
1032                                 dump_ddt(ddt, type, class);
1033                         }
1034                 }
1035         }
1036
1037         ddt_get_dedup_stats(spa, &dds_total);
1038
1039         if (dds_total.dds_blocks == 0) {
1040                 (void) printf("All DDTs are empty\n");
1041                 return;
1042         }
1043
1044         (void) printf("\n");
1045
1046         if (dump_opt['D'] > 1) {
1047                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
1048                 ddt_get_dedup_histogram(spa, &ddh_total);
1049                 zpool_dump_ddt(&dds_total, &ddh_total);
1050         }
1051
1052         dump_dedup_ratio(&dds_total);
1053 }
1054
1055 static void
1056 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
1057 {
1058         char *prefix = arg;
1059
1060         (void) printf("%s [%llu,%llu) length %llu\n",
1061             prefix,
1062             (u_longlong_t)start,
1063             (u_longlong_t)(start + size),
1064             (u_longlong_t)(size));
1065 }
1066
1067 static void
1068 dump_dtl(vdev_t *vd, int indent)
1069 {
1070         spa_t *spa = vd->vdev_spa;
1071         boolean_t required;
1072         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
1073         char prefix[256];
1074         int c, t;
1075
1076         spa_vdev_state_enter(spa, SCL_NONE);
1077         required = vdev_dtl_required(vd);
1078         (void) spa_vdev_state_exit(spa, NULL, 0);
1079
1080         if (indent == 0)
1081                 (void) printf("\nDirty time logs:\n\n");
1082
1083         (void) printf("\t%*s%s [%s]\n", indent, "",
1084             vd->vdev_path ? vd->vdev_path :
1085             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
1086             required ? "DTL-required" : "DTL-expendable");
1087
1088         for (t = 0; t < DTL_TYPES; t++) {
1089                 range_tree_t *rt = vd->vdev_dtl[t];
1090                 if (range_tree_space(rt) == 0)
1091                         continue;
1092                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
1093                     indent + 2, "", name[t]);
1094                 mutex_enter(rt->rt_lock);
1095                 range_tree_walk(rt, dump_dtl_seg, prefix);
1096                 mutex_exit(rt->rt_lock);
1097                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
1098                         dump_spacemap(spa->spa_meta_objset,
1099                             vd->vdev_dtl_sm);
1100         }
1101
1102         for (c = 0; c < vd->vdev_children; c++)
1103                 dump_dtl(vd->vdev_child[c], indent + 4);
1104 }
1105
1106 static void
1107 dump_history(spa_t *spa)
1108 {
1109         nvlist_t **events = NULL;
1110         char *buf;
1111         uint64_t resid, len, off = 0;
1112         uint_t num = 0;
1113         int error;
1114         time_t tsec;
1115         struct tm t;
1116         char tbuf[30];
1117         char internalstr[MAXPATHLEN];
1118         int i;
1119
1120         if ((buf = malloc(SPA_OLD_MAXBLOCKSIZE)) == NULL) {
1121                 (void) fprintf(stderr, "%s: unable to allocate I/O buffer\n",
1122                     __func__);
1123                 return;
1124         }
1125
1126         do {
1127                 len = SPA_OLD_MAXBLOCKSIZE;
1128
1129                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
1130                         (void) fprintf(stderr, "Unable to read history: "
1131                             "error %d\n", error);
1132                         free(buf);
1133                         return;
1134                 }
1135
1136                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1137                         break;
1138
1139                 off -= resid;
1140         } while (len != 0);
1141
1142         (void) printf("\nHistory:\n");
1143         for (i = 0; i < num; i++) {
1144                 uint64_t time, txg, ievent;
1145                 char *cmd, *intstr;
1146                 boolean_t printed = B_FALSE;
1147
1148                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
1149                     &time) != 0)
1150                         goto next;
1151                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
1152                     &cmd) != 0) {
1153                         if (nvlist_lookup_uint64(events[i],
1154                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1155                                 goto next;
1156                         verify(nvlist_lookup_uint64(events[i],
1157                             ZPOOL_HIST_TXG, &txg) == 0);
1158                         verify(nvlist_lookup_string(events[i],
1159                             ZPOOL_HIST_INT_STR, &intstr) == 0);
1160                         if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1161                                 goto next;
1162
1163                         (void) snprintf(internalstr,
1164                             sizeof (internalstr),
1165                             "[internal %s txg:%lld] %s",
1166                             zfs_history_event_names[ievent],
1167                             (longlong_t)txg, intstr);
1168                         cmd = internalstr;
1169                 }
1170                 tsec = time;
1171                 (void) localtime_r(&tsec, &t);
1172                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1173                 (void) printf("%s %s\n", tbuf, cmd);
1174                 printed = B_TRUE;
1175
1176 next:
1177                 if (dump_opt['h'] > 1) {
1178                         if (!printed)
1179                                 (void) printf("unrecognized record:\n");
1180                         dump_nvlist(events[i], 2);
1181                 }
1182         }
1183         free(buf);
1184 }
1185
1186 /*ARGSUSED*/
1187 static void
1188 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1189 {
1190 }
1191
1192 static uint64_t
1193 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1194     const zbookmark_phys_t *zb)
1195 {
1196         if (dnp == NULL) {
1197                 ASSERT(zb->zb_level < 0);
1198                 if (zb->zb_object == 0)
1199                         return (zb->zb_blkid);
1200                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1201         }
1202
1203         ASSERT(zb->zb_level >= 0);
1204
1205         return ((zb->zb_blkid <<
1206             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1207             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1208 }
1209
1210 static void
1211 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1212 {
1213         const dva_t *dva = bp->blk_dva;
1214         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1215         int i;
1216
1217         if (dump_opt['b'] >= 6) {
1218                 snprintf_blkptr(blkbuf, buflen, bp);
1219                 return;
1220         }
1221
1222         if (BP_IS_EMBEDDED(bp)) {
1223                 (void) sprintf(blkbuf,
1224                     "EMBEDDED et=%u %llxL/%llxP B=%llu",
1225                     (int)BPE_GET_ETYPE(bp),
1226                     (u_longlong_t)BPE_GET_LSIZE(bp),
1227                     (u_longlong_t)BPE_GET_PSIZE(bp),
1228                     (u_longlong_t)bp->blk_birth);
1229                 return;
1230         }
1231
1232         blkbuf[0] = '\0';
1233
1234         for (i = 0; i < ndvas; i++)
1235                 (void) snprintf(blkbuf + strlen(blkbuf),
1236                     buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1237                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1238                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1239                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1240
1241         if (BP_IS_HOLE(bp)) {
1242                 (void) snprintf(blkbuf + strlen(blkbuf),
1243                     buflen - strlen(blkbuf),
1244                     "%llxL B=%llu",
1245                     (u_longlong_t)BP_GET_LSIZE(bp),
1246                     (u_longlong_t)bp->blk_birth);
1247         } else {
1248                 (void) snprintf(blkbuf + strlen(blkbuf),
1249                     buflen - strlen(blkbuf),
1250                     "%llxL/%llxP F=%llu B=%llu/%llu",
1251                     (u_longlong_t)BP_GET_LSIZE(bp),
1252                     (u_longlong_t)BP_GET_PSIZE(bp),
1253                     (u_longlong_t)BP_GET_FILL(bp),
1254                     (u_longlong_t)bp->blk_birth,
1255                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1256         }
1257 }
1258
1259 static void
1260 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1261     const dnode_phys_t *dnp)
1262 {
1263         char blkbuf[BP_SPRINTF_LEN];
1264         int l;
1265
1266         if (!BP_IS_EMBEDDED(bp)) {
1267                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1268                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1269         }
1270
1271         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1272
1273         ASSERT(zb->zb_level >= 0);
1274
1275         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1276                 if (l == zb->zb_level) {
1277                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1278                 } else {
1279                         (void) printf(" ");
1280                 }
1281         }
1282
1283         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1284         (void) printf("%s\n", blkbuf);
1285 }
1286
1287 static int
1288 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1289     blkptr_t *bp, const zbookmark_phys_t *zb)
1290 {
1291         int err = 0;
1292
1293         if (bp->blk_birth == 0)
1294                 return (0);
1295
1296         print_indirect(bp, zb, dnp);
1297
1298         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1299                 arc_flags_t flags = ARC_FLAG_WAIT;
1300                 int i;
1301                 blkptr_t *cbp;
1302                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1303                 arc_buf_t *buf;
1304                 uint64_t fill = 0;
1305
1306                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1307                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1308                 if (err)
1309                         return (err);
1310                 ASSERT(buf->b_data);
1311
1312                 /* recursively visit blocks below this */
1313                 cbp = buf->b_data;
1314                 for (i = 0; i < epb; i++, cbp++) {
1315                         zbookmark_phys_t czb;
1316
1317                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1318                             zb->zb_level - 1,
1319                             zb->zb_blkid * epb + i);
1320                         err = visit_indirect(spa, dnp, cbp, &czb);
1321                         if (err)
1322                                 break;
1323                         fill += BP_GET_FILL(cbp);
1324                 }
1325                 if (!err)
1326                         ASSERT3U(fill, ==, BP_GET_FILL(bp));
1327                 arc_buf_destroy(buf, &buf);
1328         }
1329
1330         return (err);
1331 }
1332
1333 /*ARGSUSED*/
1334 static void
1335 dump_indirect(dnode_t *dn)
1336 {
1337         dnode_phys_t *dnp = dn->dn_phys;
1338         int j;
1339         zbookmark_phys_t czb;
1340
1341         (void) printf("Indirect blocks:\n");
1342
1343         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1344             dn->dn_object, dnp->dn_nlevels - 1, 0);
1345         for (j = 0; j < dnp->dn_nblkptr; j++) {
1346                 czb.zb_blkid = j;
1347                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1348                     &dnp->dn_blkptr[j], &czb);
1349         }
1350
1351         (void) printf("\n");
1352 }
1353
1354 /*ARGSUSED*/
1355 static void
1356 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1357 {
1358         dsl_dir_phys_t *dd = data;
1359         time_t crtime;
1360         char nice[32];
1361
1362         if (dd == NULL)
1363                 return;
1364
1365         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1366
1367         crtime = dd->dd_creation_time;
1368         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1369         (void) printf("\t\thead_dataset_obj = %llu\n",
1370             (u_longlong_t)dd->dd_head_dataset_obj);
1371         (void) printf("\t\tparent_dir_obj = %llu\n",
1372             (u_longlong_t)dd->dd_parent_obj);
1373         (void) printf("\t\torigin_obj = %llu\n",
1374             (u_longlong_t)dd->dd_origin_obj);
1375         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1376             (u_longlong_t)dd->dd_child_dir_zapobj);
1377         zdb_nicenum(dd->dd_used_bytes, nice);
1378         (void) printf("\t\tused_bytes = %s\n", nice);
1379         zdb_nicenum(dd->dd_compressed_bytes, nice);
1380         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1381         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1382         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1383         zdb_nicenum(dd->dd_quota, nice);
1384         (void) printf("\t\tquota = %s\n", nice);
1385         zdb_nicenum(dd->dd_reserved, nice);
1386         (void) printf("\t\treserved = %s\n", nice);
1387         (void) printf("\t\tprops_zapobj = %llu\n",
1388             (u_longlong_t)dd->dd_props_zapobj);
1389         (void) printf("\t\tdeleg_zapobj = %llu\n",
1390             (u_longlong_t)dd->dd_deleg_zapobj);
1391         (void) printf("\t\tflags = %llx\n",
1392             (u_longlong_t)dd->dd_flags);
1393
1394 #define DO(which) \
1395         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1396         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1397         DO(HEAD);
1398         DO(SNAP);
1399         DO(CHILD);
1400         DO(CHILD_RSRV);
1401         DO(REFRSRV);
1402 #undef DO
1403 }
1404
1405 /*ARGSUSED*/
1406 static void
1407 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1408 {
1409         dsl_dataset_phys_t *ds = data;
1410         time_t crtime;
1411         char used[32], compressed[32], uncompressed[32], unique[32];
1412         char blkbuf[BP_SPRINTF_LEN];
1413
1414         if (ds == NULL)
1415                 return;
1416
1417         ASSERT(size == sizeof (*ds));
1418         crtime = ds->ds_creation_time;
1419         zdb_nicenum(ds->ds_referenced_bytes, used);
1420         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1421         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1422         zdb_nicenum(ds->ds_unique_bytes, unique);
1423         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1424
1425         (void) printf("\t\tdir_obj = %llu\n",
1426             (u_longlong_t)ds->ds_dir_obj);
1427         (void) printf("\t\tprev_snap_obj = %llu\n",
1428             (u_longlong_t)ds->ds_prev_snap_obj);
1429         (void) printf("\t\tprev_snap_txg = %llu\n",
1430             (u_longlong_t)ds->ds_prev_snap_txg);
1431         (void) printf("\t\tnext_snap_obj = %llu\n",
1432             (u_longlong_t)ds->ds_next_snap_obj);
1433         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1434             (u_longlong_t)ds->ds_snapnames_zapobj);
1435         (void) printf("\t\tnum_children = %llu\n",
1436             (u_longlong_t)ds->ds_num_children);
1437         (void) printf("\t\tuserrefs_obj = %llu\n",
1438             (u_longlong_t)ds->ds_userrefs_obj);
1439         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1440         (void) printf("\t\tcreation_txg = %llu\n",
1441             (u_longlong_t)ds->ds_creation_txg);
1442         (void) printf("\t\tdeadlist_obj = %llu\n",
1443             (u_longlong_t)ds->ds_deadlist_obj);
1444         (void) printf("\t\tused_bytes = %s\n", used);
1445         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1446         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1447         (void) printf("\t\tunique = %s\n", unique);
1448         (void) printf("\t\tfsid_guid = %llu\n",
1449             (u_longlong_t)ds->ds_fsid_guid);
1450         (void) printf("\t\tguid = %llu\n",
1451             (u_longlong_t)ds->ds_guid);
1452         (void) printf("\t\tflags = %llx\n",
1453             (u_longlong_t)ds->ds_flags);
1454         (void) printf("\t\tnext_clones_obj = %llu\n",
1455             (u_longlong_t)ds->ds_next_clones_obj);
1456         (void) printf("\t\tprops_obj = %llu\n",
1457             (u_longlong_t)ds->ds_props_obj);
1458         (void) printf("\t\tbp = %s\n", blkbuf);
1459 }
1460
1461 /* ARGSUSED */
1462 static int
1463 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1464 {
1465         char blkbuf[BP_SPRINTF_LEN];
1466
1467         if (bp->blk_birth != 0) {
1468                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1469                 (void) printf("\t%s\n", blkbuf);
1470         }
1471         return (0);
1472 }
1473
1474 static void
1475 dump_bptree(objset_t *os, uint64_t obj, char *name)
1476 {
1477         char bytes[32];
1478         bptree_phys_t *bt;
1479         dmu_buf_t *db;
1480
1481         if (dump_opt['d'] < 3)
1482                 return;
1483
1484         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1485         bt = db->db_data;
1486         zdb_nicenum(bt->bt_bytes, bytes);
1487         (void) printf("\n    %s: %llu datasets, %s\n",
1488             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1489         dmu_buf_rele(db, FTAG);
1490
1491         if (dump_opt['d'] < 5)
1492                 return;
1493
1494         (void) printf("\n");
1495
1496         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1497 }
1498
1499 /* ARGSUSED */
1500 static int
1501 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1502 {
1503         char blkbuf[BP_SPRINTF_LEN];
1504
1505         ASSERT(bp->blk_birth != 0);
1506         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1507         (void) printf("\t%s\n", blkbuf);
1508         return (0);
1509 }
1510
1511 static void
1512 dump_full_bpobj(bpobj_t *bpo, char *name, int indent)
1513 {
1514         char bytes[32];
1515         char comp[32];
1516         char uncomp[32];
1517         uint64_t i;
1518
1519         if (dump_opt['d'] < 3)
1520                 return;
1521
1522         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1523         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1524                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1525                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1526                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1527                     "%llu subobjs in object, %llu, %s (%s/%s comp)\n",
1528                     indent * 8, name,
1529                     (u_longlong_t)bpo->bpo_object,
1530                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1531                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1532                     (u_longlong_t)bpo->bpo_phys->bpo_subobjs,
1533                     bytes, comp, uncomp);
1534
1535                 for (i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1536                         uint64_t subobj;
1537                         bpobj_t subbpo;
1538                         int error;
1539                         VERIFY0(dmu_read(bpo->bpo_os,
1540                             bpo->bpo_phys->bpo_subobjs,
1541                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1542                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1543                         if (error != 0) {
1544                                 (void) printf("ERROR %u while trying to open "
1545                                     "subobj id %llu\n",
1546                                     error, (u_longlong_t)subobj);
1547                                 continue;
1548                         }
1549                         dump_full_bpobj(&subbpo, "subobj", indent + 1);
1550                         bpobj_close(&subbpo);
1551                 }
1552         } else {
1553                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1554                     indent * 8, name,
1555                     (u_longlong_t)bpo->bpo_object,
1556                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1557                     bytes);
1558         }
1559
1560         if (dump_opt['d'] < 5)
1561                 return;
1562
1563
1564         if (indent == 0) {
1565                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1566                 (void) printf("\n");
1567         }
1568 }
1569
1570 static void
1571 dump_deadlist(dsl_deadlist_t *dl)
1572 {
1573         dsl_deadlist_entry_t *dle;
1574         uint64_t unused;
1575         char bytes[32];
1576         char comp[32];
1577         char uncomp[32];
1578
1579         if (dump_opt['d'] < 3)
1580                 return;
1581
1582         if (dl->dl_oldfmt) {
1583                 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1584                 return;
1585         }
1586
1587         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1588         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1589         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1590         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1591             bytes, comp, uncomp);
1592
1593         if (dump_opt['d'] < 4)
1594                 return;
1595
1596         (void) printf("\n");
1597
1598         /* force the tree to be loaded */
1599         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1600
1601         for (dle = avl_first(&dl->dl_tree); dle;
1602             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1603                 if (dump_opt['d'] >= 5) {
1604                         char buf[128];
1605                         (void) snprintf(buf, sizeof (buf),
1606                             "mintxg %llu -> obj %llu",
1607                             (longlong_t)dle->dle_mintxg,
1608                             (longlong_t)dle->dle_bpobj.bpo_object);
1609
1610                         dump_full_bpobj(&dle->dle_bpobj, buf, 0);
1611                 } else {
1612                         (void) printf("mintxg %llu -> obj %llu\n",
1613                             (longlong_t)dle->dle_mintxg,
1614                             (longlong_t)dle->dle_bpobj.bpo_object);
1615
1616                 }
1617         }
1618 }
1619
1620 static avl_tree_t idx_tree;
1621 static avl_tree_t domain_tree;
1622 static boolean_t fuid_table_loaded;
1623 static objset_t *sa_os = NULL;
1624 static sa_attr_type_t *sa_attr_table = NULL;
1625
1626 static int
1627 open_objset(const char *path, dmu_objset_type_t type, void *tag, objset_t **osp)
1628 {
1629         int err;
1630         uint64_t sa_attrs = 0;
1631         uint64_t version = 0;
1632
1633         VERIFY3P(sa_os, ==, NULL);
1634         err = dmu_objset_own(path, type, B_TRUE, tag, osp);
1635         if (err != 0) {
1636                 (void) fprintf(stderr, "failed to own dataset '%s': %s\n", path,
1637                     strerror(err));
1638                 return (err);
1639         }
1640
1641         if (dmu_objset_type(*osp) == DMU_OST_ZFS) {
1642                 (void) zap_lookup(*osp, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1643                     8, 1, &version);
1644                 if (version >= ZPL_VERSION_SA) {
1645                         (void) zap_lookup(*osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1646                             8, 1, &sa_attrs);
1647                 }
1648                 err = sa_setup(*osp, sa_attrs, zfs_attr_table, ZPL_END,
1649                     &sa_attr_table);
1650                 if (err != 0) {
1651                         (void) fprintf(stderr, "sa_setup failed: %s\n",
1652                             strerror(err));
1653                         dmu_objset_disown(*osp, tag);
1654                         *osp = NULL;
1655                 }
1656         }
1657         sa_os = *osp;
1658
1659         return (0);
1660 }
1661
1662 static void
1663 close_objset(objset_t *os, void *tag)
1664 {
1665         VERIFY3P(os, ==, sa_os);
1666         if (os->os_sa != NULL)
1667                 sa_tear_down(os);
1668         dmu_objset_disown(os, tag);
1669         sa_attr_table = NULL;
1670         sa_os = NULL;
1671 }
1672
1673 static void
1674 fuid_table_destroy(void)
1675 {
1676         if (fuid_table_loaded) {
1677                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1678                 fuid_table_loaded = B_FALSE;
1679         }
1680 }
1681
1682 /*
1683  * print uid or gid information.
1684  * For normal POSIX id just the id is printed in decimal format.
1685  * For CIFS files with FUID the fuid is printed in hex followed by
1686  * the domain-rid string.
1687  */
1688 static void
1689 print_idstr(uint64_t id, const char *id_type)
1690 {
1691         if (FUID_INDEX(id)) {
1692                 char *domain;
1693
1694                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1695                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1696                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1697         } else {
1698                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1699         }
1700
1701 }
1702
1703 static void
1704 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1705 {
1706         uint32_t uid_idx, gid_idx;
1707
1708         uid_idx = FUID_INDEX(uid);
1709         gid_idx = FUID_INDEX(gid);
1710
1711         /* Load domain table, if not already loaded */
1712         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1713                 uint64_t fuid_obj;
1714
1715                 /* first find the fuid object.  It lives in the master node */
1716                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1717                     8, 1, &fuid_obj) == 0);
1718                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1719                 (void) zfs_fuid_table_load(os, fuid_obj,
1720                     &idx_tree, &domain_tree);
1721                 fuid_table_loaded = B_TRUE;
1722         }
1723
1724         print_idstr(uid, "uid");
1725         print_idstr(gid, "gid");
1726 }
1727
1728 static void
1729 dump_znode_sa_xattr(sa_handle_t *hdl)
1730 {
1731         nvlist_t *sa_xattr;
1732         nvpair_t *elem = NULL;
1733         int sa_xattr_size = 0;
1734         int sa_xattr_entries = 0;
1735         int error;
1736         char *sa_xattr_packed;
1737
1738         error = sa_size(hdl, sa_attr_table[ZPL_DXATTR], &sa_xattr_size);
1739         if (error || sa_xattr_size == 0)
1740                 return;
1741
1742         sa_xattr_packed = malloc(sa_xattr_size);
1743         if (sa_xattr_packed == NULL)
1744                 return;
1745
1746         error = sa_lookup(hdl, sa_attr_table[ZPL_DXATTR],
1747             sa_xattr_packed, sa_xattr_size);
1748         if (error) {
1749                 free(sa_xattr_packed);
1750                 return;
1751         }
1752
1753         error = nvlist_unpack(sa_xattr_packed, sa_xattr_size, &sa_xattr, 0);
1754         if (error) {
1755                 free(sa_xattr_packed);
1756                 return;
1757         }
1758
1759         while ((elem = nvlist_next_nvpair(sa_xattr, elem)) != NULL)
1760                 sa_xattr_entries++;
1761
1762         (void) printf("\tSA xattrs: %d bytes, %d entries\n\n",
1763             sa_xattr_size, sa_xattr_entries);
1764         while ((elem = nvlist_next_nvpair(sa_xattr, elem)) != NULL) {
1765                 uchar_t *value;
1766                 uint_t cnt, idx;
1767
1768                 (void) printf("\t\t%s = ", nvpair_name(elem));
1769                 nvpair_value_byte_array(elem, &value, &cnt);
1770                 for (idx = 0; idx < cnt; ++idx) {
1771                         if (isprint(value[idx]))
1772                                 (void) putchar(value[idx]);
1773                         else
1774                                 (void) printf("\\%3.3o", value[idx]);
1775                 }
1776                 (void) putchar('\n');
1777         }
1778
1779         nvlist_free(sa_xattr);
1780         free(sa_xattr_packed);
1781 }
1782
1783 /*ARGSUSED*/
1784 static void
1785 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1786 {
1787         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1788         sa_handle_t *hdl;
1789         uint64_t xattr, rdev, gen;
1790         uint64_t uid, gid, mode, fsize, parent, links;
1791         uint64_t pflags;
1792         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1793         time_t z_crtime, z_atime, z_mtime, z_ctime;
1794         sa_bulk_attr_t bulk[12];
1795         int idx = 0;
1796         int error;
1797
1798         VERIFY3P(os, ==, sa_os);
1799         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1800                 (void) printf("Failed to get handle for SA znode\n");
1801                 return;
1802         }
1803
1804         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1805         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1806         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1807             &links, 8);
1808         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1809         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1810             &mode, 8);
1811         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1812             NULL, &parent, 8);
1813         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1814             &fsize, 8);
1815         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1816             acctm, 16);
1817         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1818             modtm, 16);
1819         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1820             crtm, 16);
1821         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1822             chgtm, 16);
1823         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1824             &pflags, 8);
1825
1826         if (sa_bulk_lookup(hdl, bulk, idx)) {
1827                 (void) sa_handle_destroy(hdl);
1828                 return;
1829         }
1830
1831         z_crtime = (time_t)crtm[0];
1832         z_atime = (time_t)acctm[0];
1833         z_mtime = (time_t)modtm[0];
1834         z_ctime = (time_t)chgtm[0];
1835
1836         if (dump_opt['d'] > 4) {
1837                 error = zfs_obj_to_path(os, object, path, sizeof (path));
1838                 if (error != 0) {
1839                         (void) snprintf(path, sizeof (path),
1840                             "\?\?\?<object#%llu>", (u_longlong_t)object);
1841                 }
1842                 (void) printf("\tpath   %s\n", path);
1843         }
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     uint64_t *dnode_slots_used)
1938 {
1939         dmu_buf_t *db = NULL;
1940         dmu_object_info_t doi;
1941         dnode_t *dn;
1942         void *bonus = NULL;
1943         size_t bsize = 0;
1944         char iblk[32], dblk[32], lsize[32], asize[32], fill[32], dnsize[32];
1945         char bonus_size[32];
1946         char aux[50];
1947         int error;
1948
1949         if (*print_header) {
1950                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %6s  %5s  %6s  %s\n",
1951                     "Object", "lvl", "iblk", "dblk", "dsize", "dnsize",
1952                     "lsize", "%full", "type");
1953                 *print_header = 0;
1954         }
1955
1956         if (object == 0) {
1957                 dn = DMU_META_DNODE(os);
1958         } else {
1959                 error = dmu_bonus_hold(os, object, FTAG, &db);
1960                 if (error)
1961                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1962                             object, error);
1963                 bonus = db->db_data;
1964                 bsize = db->db_size;
1965                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1966         }
1967         dmu_object_info_from_dnode(dn, &doi);
1968
1969         if (dnode_slots_used)
1970                 *dnode_slots_used = doi.doi_dnodesize / DNODE_MIN_SIZE;
1971
1972         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1973         zdb_nicenum(doi.doi_data_block_size, dblk);
1974         zdb_nicenum(doi.doi_max_offset, lsize);
1975         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1976         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1977         zdb_nicenum(doi.doi_dnodesize, dnsize);
1978         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1979             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1980             doi.doi_max_offset);
1981
1982         aux[0] = '\0';
1983
1984         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1985                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1986                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1987         }
1988
1989         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1990                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1991                     ZDB_COMPRESS_NAME(doi.doi_compress));
1992         }
1993
1994         (void) printf("%10lld  %3u  %5s  %5s  %5s  %6s  %5s  %6s  %s%s\n",
1995             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1996             asize, dnsize, lsize, fill, zdb_ot_name(doi.doi_type), aux);
1997
1998         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1999                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %5s  %6s  %s\n",
2000                     "", "", "", "", "", "", bonus_size, "bonus",
2001                     zdb_ot_name(doi.doi_bonus_type));
2002         }
2003
2004         if (verbosity >= 4) {
2005                 (void) printf("\tdnode flags: %s%s%s%s\n",
2006                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
2007                     "USED_BYTES " : "",
2008                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
2009                     "USERUSED_ACCOUNTED " : "",
2010                     (dn->dn_phys->dn_flags & DNODE_FLAG_USEROBJUSED_ACCOUNTED) ?
2011                     "USEROBJUSED_ACCOUNTED " : "",
2012                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
2013                     "SPILL_BLKPTR" : "");
2014                 (void) printf("\tdnode maxblkid: %llu\n",
2015                     (longlong_t)dn->dn_phys->dn_maxblkid);
2016
2017                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
2018                     bonus, bsize);
2019                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
2020                 *print_header = 1;
2021         }
2022
2023         if (verbosity >= 5)
2024                 dump_indirect(dn);
2025
2026         if (verbosity >= 5) {
2027                 /*
2028                  * Report the list of segments that comprise the object.
2029                  */
2030                 uint64_t start = 0;
2031                 uint64_t end;
2032                 uint64_t blkfill = 1;
2033                 int minlvl = 1;
2034
2035                 if (dn->dn_type == DMU_OT_DNODE) {
2036                         minlvl = 0;
2037                         blkfill = DNODES_PER_BLOCK;
2038                 }
2039
2040                 for (;;) {
2041                         char segsize[32];
2042                         error = dnode_next_offset(dn,
2043                             0, &start, minlvl, blkfill, 0);
2044                         if (error)
2045                                 break;
2046                         end = start;
2047                         error = dnode_next_offset(dn,
2048                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
2049                         zdb_nicenum(end - start, segsize);
2050                         (void) printf("\t\tsegment [%016llx, %016llx)"
2051                             " size %5s\n", (u_longlong_t)start,
2052                             (u_longlong_t)end, segsize);
2053                         if (error)
2054                                 break;
2055                         start = end;
2056                 }
2057         }
2058
2059         if (db != NULL)
2060                 dmu_buf_rele(db, FTAG);
2061 }
2062
2063 static char *objset_types[DMU_OST_NUMTYPES] = {
2064         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
2065
2066 static void
2067 dump_dir(objset_t *os)
2068 {
2069         dmu_objset_stats_t dds;
2070         uint64_t object, object_count;
2071         uint64_t refdbytes, usedobjs, scratch;
2072         char numbuf[32];
2073         char blkbuf[BP_SPRINTF_LEN + 20];
2074         char osname[ZFS_MAX_DATASET_NAME_LEN];
2075         char *type = "UNKNOWN";
2076         int verbosity = dump_opt['d'];
2077         int print_header = 1;
2078         int i, error;
2079         uint64_t total_slots_used = 0;
2080         uint64_t max_slot_used = 0;
2081         uint64_t dnode_slots;
2082
2083         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
2084         dmu_objset_fast_stat(os, &dds);
2085         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
2086
2087         if (dds.dds_type < DMU_OST_NUMTYPES)
2088                 type = objset_types[dds.dds_type];
2089
2090         if (dds.dds_type == DMU_OST_META) {
2091                 dds.dds_creation_txg = TXG_INITIAL;
2092                 usedobjs = BP_GET_FILL(os->os_rootbp);
2093                 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
2094                     dd_used_bytes;
2095         } else {
2096                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
2097         }
2098
2099         ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
2100
2101         zdb_nicenum(refdbytes, numbuf);
2102
2103         if (verbosity >= 4) {
2104                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
2105                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
2106                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
2107         } else {
2108                 blkbuf[0] = '\0';
2109         }
2110
2111         dmu_objset_name(os, osname);
2112
2113         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
2114             "%s, %llu objects%s\n",
2115             osname, type, (u_longlong_t)dmu_objset_id(os),
2116             (u_longlong_t)dds.dds_creation_txg,
2117             numbuf, (u_longlong_t)usedobjs, blkbuf);
2118
2119         if (zopt_objects != 0) {
2120                 for (i = 0; i < zopt_objects; i++)
2121                         dump_object(os, zopt_object[i], verbosity,
2122                             &print_header, NULL);
2123                 (void) printf("\n");
2124                 return;
2125         }
2126
2127         if (dump_opt['i'] != 0 || verbosity >= 2)
2128                 dump_intent_log(dmu_objset_zil(os));
2129
2130         if (dmu_objset_ds(os) != NULL)
2131                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
2132
2133         if (verbosity < 2)
2134                 return;
2135
2136         if (BP_IS_HOLE(os->os_rootbp))
2137                 return;
2138
2139         dump_object(os, 0, verbosity, &print_header, NULL);
2140         object_count = 0;
2141         if (DMU_USERUSED_DNODE(os) != NULL &&
2142             DMU_USERUSED_DNODE(os)->dn_type != 0) {
2143                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header,
2144                     NULL);
2145                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header,
2146                     NULL);
2147         }
2148
2149         object = 0;
2150         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
2151                 dump_object(os, object, verbosity, &print_header, &dnode_slots);
2152                 object_count++;
2153                 total_slots_used += dnode_slots;
2154                 max_slot_used = object + dnode_slots - 1;
2155         }
2156
2157         ASSERT3U(object_count, ==, usedobjs);
2158
2159         (void) printf("\n");
2160
2161         (void) printf("    Dnode slots:\n");
2162         (void) printf("\tTotal used:    %10llu\n",
2163             (u_longlong_t)total_slots_used);
2164         (void) printf("\tMax used:      %10llu\n",
2165             (u_longlong_t)max_slot_used);
2166         (void) printf("\tPercent empty: %10lf\n",
2167             (double)(max_slot_used - total_slots_used)*100 /
2168             (double)max_slot_used);
2169
2170         (void) printf("\n");
2171
2172         if (error != ESRCH) {
2173                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
2174                 abort();
2175         }
2176 }
2177
2178 static void
2179 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
2180 {
2181         time_t timestamp = ub->ub_timestamp;
2182
2183         (void) printf("%s", header ? header : "");
2184         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
2185         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
2186         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
2187         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
2188         (void) printf("\ttimestamp = %llu UTC = %s",
2189             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
2190
2191         (void) printf("\tmmp_magic = %016llx\n",
2192             (u_longlong_t)ub->ub_mmp_magic);
2193         if (ub->ub_mmp_magic == MMP_MAGIC)
2194                 (void) printf("\tmmp_delay = %0llu\n",
2195                     (u_longlong_t)ub->ub_mmp_delay);
2196
2197         if (dump_opt['u'] >= 4) {
2198                 char blkbuf[BP_SPRINTF_LEN];
2199                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
2200                 (void) printf("\trootbp = %s\n", blkbuf);
2201         }
2202         (void) printf("%s", footer ? footer : "");
2203 }
2204
2205 static void
2206 dump_config(spa_t *spa)
2207 {
2208         dmu_buf_t *db;
2209         size_t nvsize = 0;
2210         int error = 0;
2211
2212
2213         error = dmu_bonus_hold(spa->spa_meta_objset,
2214             spa->spa_config_object, FTAG, &db);
2215
2216         if (error == 0) {
2217                 nvsize = *(uint64_t *)db->db_data;
2218                 dmu_buf_rele(db, FTAG);
2219
2220                 (void) printf("\nMOS Configuration:\n");
2221                 dump_packed_nvlist(spa->spa_meta_objset,
2222                     spa->spa_config_object, (void *)&nvsize, 1);
2223         } else {
2224                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
2225                     (u_longlong_t)spa->spa_config_object, error);
2226         }
2227 }
2228
2229 static void
2230 dump_cachefile(const char *cachefile)
2231 {
2232         int fd;
2233         struct stat64 statbuf;
2234         char *buf;
2235         nvlist_t *config;
2236
2237         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
2238                 (void) printf("cannot open '%s': %s\n", cachefile,
2239                     strerror(errno));
2240                 exit(1);
2241         }
2242
2243         if (fstat64(fd, &statbuf) != 0) {
2244                 (void) printf("failed to stat '%s': %s\n", cachefile,
2245                     strerror(errno));
2246                 exit(1);
2247         }
2248
2249         if ((buf = malloc(statbuf.st_size)) == NULL) {
2250                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
2251                     (u_longlong_t)statbuf.st_size);
2252                 exit(1);
2253         }
2254
2255         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2256                 (void) fprintf(stderr, "failed to read %llu bytes\n",
2257                     (u_longlong_t)statbuf.st_size);
2258                 exit(1);
2259         }
2260
2261         (void) close(fd);
2262
2263         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2264                 (void) fprintf(stderr, "failed to unpack nvlist\n");
2265                 exit(1);
2266         }
2267
2268         free(buf);
2269
2270         dump_nvlist(config, 0);
2271
2272         nvlist_free(config);
2273 }
2274
2275 /*
2276  * ZFS label nvlist stats
2277  */
2278 typedef struct zdb_nvl_stats {
2279         int             zns_list_count;
2280         int             zns_leaf_count;
2281         size_t          zns_leaf_largest;
2282         size_t          zns_leaf_total;
2283         nvlist_t        *zns_string;
2284         nvlist_t        *zns_uint64;
2285         nvlist_t        *zns_boolean;
2286 } zdb_nvl_stats_t;
2287
2288 static void
2289 collect_nvlist_stats(nvlist_t *nvl, zdb_nvl_stats_t *stats)
2290 {
2291         nvlist_t *list, **array;
2292         nvpair_t *nvp = NULL;
2293         char *name;
2294         uint_t i, items;
2295
2296         stats->zns_list_count++;
2297
2298         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2299                 name = nvpair_name(nvp);
2300
2301                 switch (nvpair_type(nvp)) {
2302                 case DATA_TYPE_STRING:
2303                         fnvlist_add_string(stats->zns_string, name,
2304                             fnvpair_value_string(nvp));
2305                         break;
2306                 case DATA_TYPE_UINT64:
2307                         fnvlist_add_uint64(stats->zns_uint64, name,
2308                             fnvpair_value_uint64(nvp));
2309                         break;
2310                 case DATA_TYPE_BOOLEAN:
2311                         fnvlist_add_boolean(stats->zns_boolean, name);
2312                         break;
2313                 case DATA_TYPE_NVLIST:
2314                         if (nvpair_value_nvlist(nvp, &list) == 0)
2315                                 collect_nvlist_stats(list, stats);
2316                         break;
2317                 case DATA_TYPE_NVLIST_ARRAY:
2318                         if (nvpair_value_nvlist_array(nvp, &array, &items) != 0)
2319                                 break;
2320
2321                         for (i = 0; i < items; i++) {
2322                                 collect_nvlist_stats(array[i], stats);
2323
2324                                 /* collect stats on leaf vdev */
2325                                 if (strcmp(name, "children") == 0) {
2326                                         size_t size;
2327
2328                                         (void) nvlist_size(array[i], &size,
2329                                             NV_ENCODE_XDR);
2330                                         stats->zns_leaf_total += size;
2331                                         if (size > stats->zns_leaf_largest)
2332                                                 stats->zns_leaf_largest = size;
2333                                         stats->zns_leaf_count++;
2334                                 }
2335                         }
2336                         break;
2337                 default:
2338                         (void) printf("skip type %d!\n", (int)nvpair_type(nvp));
2339                 }
2340         }
2341 }
2342
2343 static void
2344 dump_nvlist_stats(nvlist_t *nvl, size_t cap)
2345 {
2346         zdb_nvl_stats_t stats = { 0 };
2347         size_t size, sum = 0, total;
2348         size_t noise;
2349
2350         /* requires nvlist with non-unique names for stat collection */
2351         VERIFY0(nvlist_alloc(&stats.zns_string, 0, 0));
2352         VERIFY0(nvlist_alloc(&stats.zns_uint64, 0, 0));
2353         VERIFY0(nvlist_alloc(&stats.zns_boolean, 0, 0));
2354         VERIFY0(nvlist_size(stats.zns_boolean, &noise, NV_ENCODE_XDR));
2355
2356         (void) printf("\n\nZFS Label NVList Config Stats:\n");
2357
2358         VERIFY0(nvlist_size(nvl, &total, NV_ENCODE_XDR));
2359         (void) printf("  %d bytes used, %d bytes free (using %4.1f%%)\n\n",
2360             (int)total, (int)(cap - total), 100.0 * total / cap);
2361
2362         collect_nvlist_stats(nvl, &stats);
2363
2364         VERIFY0(nvlist_size(stats.zns_uint64, &size, NV_ENCODE_XDR));
2365         size -= noise;
2366         sum += size;
2367         (void) printf("%12s %4d %6d bytes (%5.2f%%)\n", "integers:",
2368             (int)fnvlist_num_pairs(stats.zns_uint64),
2369             (int)size, 100.0 * size / total);
2370
2371         VERIFY0(nvlist_size(stats.zns_string, &size, NV_ENCODE_XDR));
2372         size -= noise;
2373         sum += size;
2374         (void) printf("%12s %4d %6d bytes (%5.2f%%)\n", "strings:",
2375             (int)fnvlist_num_pairs(stats.zns_string),
2376             (int)size, 100.0 * size / total);
2377
2378         VERIFY0(nvlist_size(stats.zns_boolean, &size, NV_ENCODE_XDR));
2379         size -= noise;
2380         sum += size;
2381         (void) printf("%12s %4d %6d bytes (%5.2f%%)\n", "booleans:",
2382             (int)fnvlist_num_pairs(stats.zns_boolean),
2383             (int)size, 100.0 * size / total);
2384
2385         size = total - sum;     /* treat remainder as nvlist overhead */
2386         (void) printf("%12s %4d %6d bytes (%5.2f%%)\n\n", "nvlists:",
2387             stats.zns_list_count, (int)size, 100.0 * size / total);
2388
2389         if (stats.zns_leaf_count > 0) {
2390                 size_t average = stats.zns_leaf_total / stats.zns_leaf_count;
2391
2392                 (void) printf("%12s %4d %6d bytes average\n", "leaf vdevs:",
2393                     stats.zns_leaf_count, (int)average);
2394                 (void) printf("%24d bytes largest\n",
2395                     (int)stats.zns_leaf_largest);
2396
2397                 if (dump_opt['l'] >= 3 && average > 0)
2398                         (void) printf("  space for %d additional leaf vdevs\n",
2399                             (int)((cap - total) / average));
2400         }
2401         (void) printf("\n");
2402
2403         nvlist_free(stats.zns_string);
2404         nvlist_free(stats.zns_uint64);
2405         nvlist_free(stats.zns_boolean);
2406 }
2407
2408 typedef struct cksum_record {
2409         zio_cksum_t cksum;
2410         boolean_t labels[VDEV_LABELS];
2411         avl_node_t link;
2412 } cksum_record_t;
2413
2414 static int
2415 cksum_record_compare(const void *x1, const void *x2)
2416 {
2417         const cksum_record_t *l = (cksum_record_t *)x1;
2418         const cksum_record_t *r = (cksum_record_t *)x2;
2419         int arraysize = ARRAY_SIZE(l->cksum.zc_word);
2420         int difference;
2421
2422         for (int i = 0; i < arraysize; i++) {
2423                 difference = AVL_CMP(l->cksum.zc_word[i], r->cksum.zc_word[i]);
2424                 if (difference)
2425                         break;
2426         }
2427
2428         return (difference);
2429 }
2430
2431 static cksum_record_t *
2432 cksum_record_alloc(zio_cksum_t *cksum, int l)
2433 {
2434         cksum_record_t *rec;
2435
2436         rec = umem_zalloc(sizeof (*rec), UMEM_NOFAIL);
2437         rec->cksum = *cksum;
2438         rec->labels[l] = B_TRUE;
2439
2440         return (rec);
2441 }
2442
2443 static cksum_record_t *
2444 cksum_record_lookup(avl_tree_t *tree, zio_cksum_t *cksum)
2445 {
2446         cksum_record_t lookup = { .cksum = *cksum };
2447         avl_index_t where;
2448
2449         return (avl_find(tree, &lookup, &where));
2450 }
2451
2452 static cksum_record_t *
2453 cksum_record_insert(avl_tree_t *tree, zio_cksum_t *cksum, int l)
2454 {
2455         cksum_record_t *rec;
2456
2457         rec = cksum_record_lookup(tree, cksum);
2458         if (rec) {
2459                 rec->labels[l] = B_TRUE;
2460         } else {
2461                 rec = cksum_record_alloc(cksum, l);
2462                 avl_add(tree, rec);
2463         }
2464
2465         return (rec);
2466 }
2467
2468 static int
2469 first_label(cksum_record_t *rec)
2470 {
2471         for (int i = 0; i < VDEV_LABELS; i++)
2472                 if (rec->labels[i])
2473                         return (i);
2474
2475         return (-1);
2476 }
2477
2478 static void
2479 print_label_numbers(char *prefix, cksum_record_t *rec)
2480 {
2481         printf("%s", prefix);
2482         for (int i = 0; i < VDEV_LABELS; i++)
2483                 if (rec->labels[i] == B_TRUE)
2484                         printf("%d ", i);
2485         printf("\n");
2486 }
2487
2488 #define MAX_UBERBLOCK_COUNT (VDEV_UBERBLOCK_RING >> UBERBLOCK_SHIFT)
2489
2490 typedef struct label {
2491         vdev_label_t label;
2492         nvlist_t *config_nv;
2493         cksum_record_t *config;
2494         cksum_record_t *uberblocks[MAX_UBERBLOCK_COUNT];
2495         boolean_t header_printed;
2496         boolean_t read_failed;
2497 } label_t;
2498
2499 static void
2500 print_label_header(label_t *label, int l)
2501 {
2502
2503         if (dump_opt['q'])
2504                 return;
2505
2506         if (label->header_printed == B_TRUE)
2507                 return;
2508
2509         (void) printf("------------------------------------\n");
2510         (void) printf("LABEL %d\n", l);
2511         (void) printf("------------------------------------\n");
2512
2513         label->header_printed = B_TRUE;
2514 }
2515
2516 static void
2517 dump_config_from_label(label_t *label, size_t buflen, int l)
2518 {
2519         if (dump_opt['q'])
2520                 return;
2521
2522         if ((dump_opt['l'] < 3) && (first_label(label->config) != l))
2523                 return;
2524
2525         print_label_header(label, l);
2526         dump_nvlist(label->config_nv, 4);
2527         print_label_numbers("    labels = ", label->config);
2528
2529         if (dump_opt['l'] >= 2)
2530                 dump_nvlist_stats(label->config_nv, buflen);
2531 }
2532
2533 #define ZDB_MAX_UB_HEADER_SIZE 32
2534
2535 static void
2536 dump_label_uberblocks(label_t *label, uint64_t ashift, int label_num)
2537 {
2538
2539         vdev_t vd;
2540         char header[ZDB_MAX_UB_HEADER_SIZE];
2541
2542         vd.vdev_ashift = ashift;
2543         vd.vdev_top = &vd;
2544
2545         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(&vd); i++) {
2546                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(&vd, i);
2547                 uberblock_t *ub = (void *)((char *)&label->label + uoff);
2548                 cksum_record_t *rec = label->uberblocks[i];
2549
2550                 if (rec == NULL) {
2551                         if (dump_opt['u'] >= 2) {
2552                                 print_label_header(label, label_num);
2553                                 (void) printf("    Uberblock[%d] invalid\n", i);
2554                         }
2555                         continue;
2556                 }
2557
2558                 if ((dump_opt['u'] < 3) && (first_label(rec) != label_num))
2559                         continue;
2560
2561                 if ((dump_opt['u'] < 4) &&
2562                     (ub->ub_mmp_magic == MMP_MAGIC) && ub->ub_mmp_delay &&
2563                     (i >= VDEV_UBERBLOCK_COUNT(&vd) - MMP_BLOCKS_PER_LABEL))
2564                         continue;
2565
2566                 print_label_header(label, label_num);
2567                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2568                     "    Uberblock[%d]\n", i);
2569                 dump_uberblock(ub, header, "");
2570                 print_label_numbers("        labels = ", rec);
2571         }
2572 }
2573
2574 static char curpath[PATH_MAX];
2575
2576 /*
2577  * Iterate through the path components, recursively passing
2578  * current one's obj and remaining path until we find the obj
2579  * for the last one.
2580  */
2581 static int
2582 dump_path_impl(objset_t *os, uint64_t obj, char *name)
2583 {
2584         int err;
2585         int header = 1;
2586         uint64_t child_obj;
2587         char *s;
2588         dmu_buf_t *db;
2589         dmu_object_info_t doi;
2590
2591         if ((s = strchr(name, '/')) != NULL)
2592                 *s = '\0';
2593         err = zap_lookup(os, obj, name, 8, 1, &child_obj);
2594
2595         (void) strlcat(curpath, name, sizeof (curpath));
2596
2597         if (err != 0) {
2598                 (void) fprintf(stderr, "failed to lookup %s: %s\n",
2599                     curpath, strerror(err));
2600                 return (err);
2601         }
2602
2603         child_obj = ZFS_DIRENT_OBJ(child_obj);
2604         err = sa_buf_hold(os, child_obj, FTAG, &db);
2605         if (err != 0) {
2606                 (void) fprintf(stderr,
2607                     "failed to get SA dbuf for obj %llu: %s\n",
2608                     (u_longlong_t)child_obj, strerror(err));
2609                 return (EINVAL);
2610         }
2611         dmu_object_info_from_db(db, &doi);
2612         sa_buf_rele(db, FTAG);
2613
2614         if (doi.doi_bonus_type != DMU_OT_SA &&
2615             doi.doi_bonus_type != DMU_OT_ZNODE) {
2616                 (void) fprintf(stderr, "invalid bonus type %d for obj %llu\n",
2617                     doi.doi_bonus_type, (u_longlong_t)child_obj);
2618                 return (EINVAL);
2619         }
2620
2621         if (dump_opt['v'] > 6) {
2622                 (void) printf("obj=%llu %s type=%d bonustype=%d\n",
2623                     (u_longlong_t)child_obj, curpath, doi.doi_type,
2624                     doi.doi_bonus_type);
2625         }
2626
2627         (void) strlcat(curpath, "/", sizeof (curpath));
2628
2629         switch (doi.doi_type) {
2630         case DMU_OT_DIRECTORY_CONTENTS:
2631                 if (s != NULL && *(s + 1) != '\0')
2632                         return (dump_path_impl(os, child_obj, s + 1));
2633                 /*FALLTHROUGH*/
2634         case DMU_OT_PLAIN_FILE_CONTENTS:
2635                 dump_object(os, child_obj, dump_opt['v'], &header, NULL);
2636                 return (0);
2637         default:
2638                 (void) fprintf(stderr, "object %llu has non-file/directory "
2639                     "type %d\n", (u_longlong_t)obj, doi.doi_type);
2640                 break;
2641         }
2642
2643         return (EINVAL);
2644 }
2645
2646 /*
2647  * Dump the blocks for the object specified by path inside the dataset.
2648  */
2649 static int
2650 dump_path(char *ds, char *path)
2651 {
2652         int err;
2653         objset_t *os;
2654         uint64_t root_obj;
2655
2656         err = open_objset(ds, DMU_OST_ZFS, FTAG, &os);
2657         if (err != 0)
2658                 return (err);
2659
2660         err = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1, &root_obj);
2661         if (err != 0) {
2662                 (void) fprintf(stderr, "can't lookup root znode: %s\n",
2663                     strerror(err));
2664                 dmu_objset_disown(os, FTAG);
2665                 return (EINVAL);
2666         }
2667
2668         (void) snprintf(curpath, sizeof (curpath), "dataset=%s path=/", ds);
2669
2670         err = dump_path_impl(os, root_obj, path);
2671
2672         close_objset(os, FTAG);
2673         return (err);
2674 }
2675
2676 static int
2677 dump_label(const char *dev)
2678 {
2679         char path[MAXPATHLEN];
2680         label_t labels[VDEV_LABELS];
2681         uint64_t psize, ashift;
2682         struct stat64 statbuf;
2683         boolean_t config_found = B_FALSE;
2684         boolean_t error = B_FALSE;
2685         avl_tree_t config_tree;
2686         avl_tree_t uberblock_tree;
2687         void *node, *cookie;
2688         int fd;
2689
2690         bzero(labels, sizeof (labels));
2691
2692         /*
2693          * Check if we were given absolute path and use it as is.
2694          * Otherwise if the provided vdev name doesn't point to a file,
2695          * try prepending expected disk paths and partition numbers.
2696          */
2697         (void) strlcpy(path, dev, sizeof (path));
2698         if (dev[0] != '/' && stat64(path, &statbuf) != 0) {
2699                 int error;
2700
2701                 error = zfs_resolve_shortname(dev, path, MAXPATHLEN);
2702                 if (error == 0 && zfs_dev_is_whole_disk(path)) {
2703                         if (zfs_append_partition(path, MAXPATHLEN) == -1)
2704                                 error = ENOENT;
2705                 }
2706
2707                 if (error || (stat64(path, &statbuf) != 0)) {
2708                         (void) printf("failed to find device %s, try "
2709                             "specifying absolute path instead\n", dev);
2710                         return (1);
2711                 }
2712         }
2713
2714         if ((fd = open64(path, O_RDONLY)) < 0) {
2715                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2716                 exit(1);
2717         }
2718
2719         if (fstat64_blk(fd, &statbuf) != 0) {
2720                 (void) printf("failed to stat '%s': %s\n", path,
2721                     strerror(errno));
2722                 (void) close(fd);
2723                 exit(1);
2724         }
2725
2726         if (S_ISBLK(statbuf.st_mode) && ioctl(fd, BLKFLSBUF) != 0)
2727                 (void) printf("failed to invalidate cache '%s' : %s\n", path,
2728                     strerror(errno));
2729
2730         avl_create(&config_tree, cksum_record_compare,
2731             sizeof (cksum_record_t), offsetof(cksum_record_t, link));
2732         avl_create(&uberblock_tree, cksum_record_compare,
2733             sizeof (cksum_record_t), offsetof(cksum_record_t, link));
2734
2735         psize = statbuf.st_size;
2736         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2737         ashift = SPA_MINBLOCKSHIFT;
2738
2739         /*
2740          * 1. Read the label from disk
2741          * 2. Unpack the configuration and insert in config tree.
2742          * 3. Traverse all uberblocks and insert in uberblock tree.
2743          */
2744         for (int l = 0; l < VDEV_LABELS; l++) {
2745                 label_t *label = &labels[l];
2746                 char *buf = label->label.vl_vdev_phys.vp_nvlist;
2747                 size_t buflen = sizeof (label->label.vl_vdev_phys.vp_nvlist);
2748                 nvlist_t *config;
2749                 cksum_record_t *rec;
2750                 zio_cksum_t cksum;
2751                 vdev_t vd;
2752
2753                 if (pread64(fd, &label->label, sizeof (label->label),
2754                     vdev_label_offset(psize, l, 0)) != sizeof (label->label)) {
2755                         if (!dump_opt['q'])
2756                                 (void) printf("failed to read label %d\n", l);
2757                         label->read_failed = B_TRUE;
2758                         error = B_TRUE;
2759                         continue;
2760                 }
2761
2762                 label->read_failed = B_FALSE;
2763
2764                 if (nvlist_unpack(buf, buflen, &config, 0) == 0) {
2765                         nvlist_t *vdev_tree = NULL;
2766                         size_t size;
2767
2768                         if ((nvlist_lookup_nvlist(config,
2769                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2770                             (nvlist_lookup_uint64(vdev_tree,
2771                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2772                                 ashift = SPA_MINBLOCKSHIFT;
2773
2774                         if (nvlist_size(config, &size, NV_ENCODE_XDR) != 0)
2775                                 size = buflen;
2776
2777                         fletcher_4_native_varsize(buf, size, &cksum);
2778                         rec = cksum_record_insert(&config_tree, &cksum, l);
2779
2780                         label->config = rec;
2781                         label->config_nv = config;
2782                         config_found = B_TRUE;
2783                 } else {
2784                         error = B_TRUE;
2785                 }
2786
2787                 vd.vdev_ashift = ashift;
2788                 vd.vdev_top = &vd;
2789
2790                 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(&vd); i++) {
2791                         uint64_t uoff = VDEV_UBERBLOCK_OFFSET(&vd, i);
2792                         uberblock_t *ub = (void *)((char *)label + uoff);
2793
2794                         if (uberblock_verify(ub))
2795                                 continue;
2796
2797                         fletcher_4_native_varsize(ub, sizeof (*ub), &cksum);
2798                         rec = cksum_record_insert(&uberblock_tree, &cksum, l);
2799
2800                         label->uberblocks[i] = rec;
2801                 }
2802         }
2803
2804         /*
2805          * Dump the label and uberblocks.
2806          */
2807         for (int l = 0; l < VDEV_LABELS; l++) {
2808                 label_t *label = &labels[l];
2809                 size_t buflen = sizeof (label->label.vl_vdev_phys.vp_nvlist);
2810
2811                 if (label->read_failed == B_TRUE)
2812                         continue;
2813
2814                 if (label->config_nv) {
2815                         dump_config_from_label(label, buflen, l);
2816                 } else {
2817                         if (!dump_opt['q'])
2818                                 (void) printf("failed to unpack label %d\n", l);
2819                 }
2820
2821                 if (dump_opt['u'])
2822                         dump_label_uberblocks(label, ashift, l);
2823
2824                 nvlist_free(label->config_nv);
2825         }
2826
2827         cookie = NULL;
2828         while ((node = avl_destroy_nodes(&config_tree, &cookie)) != NULL)
2829                 umem_free(node, sizeof (cksum_record_t));
2830
2831         cookie = NULL;
2832         while ((node = avl_destroy_nodes(&uberblock_tree, &cookie)) != NULL)
2833                 umem_free(node, sizeof (cksum_record_t));
2834
2835         avl_destroy(&config_tree);
2836         avl_destroy(&uberblock_tree);
2837
2838         (void) close(fd);
2839
2840         return (config_found == B_FALSE ? 2 :
2841             (error == B_TRUE ? 1 : 0));
2842 }
2843
2844 static uint64_t dataset_feature_count[SPA_FEATURES];
2845
2846 /*ARGSUSED*/
2847 static int
2848 dump_one_dir(const char *dsname, void *arg)
2849 {
2850         int error;
2851         objset_t *os;
2852         spa_feature_t f;
2853
2854         error = open_objset(dsname, DMU_OST_ANY, FTAG, &os);
2855         if (error != 0)
2856                 return (0);
2857
2858         for (f = 0; f < SPA_FEATURES; f++) {
2859                 if (!dmu_objset_ds(os)->ds_feature_inuse[f])
2860                         continue;
2861                 ASSERT(spa_feature_table[f].fi_flags &
2862                     ZFEATURE_FLAG_PER_DATASET);
2863                 dataset_feature_count[f]++;
2864         }
2865
2866         dump_dir(os);
2867         close_objset(os, FTAG);
2868         fuid_table_destroy();
2869         return (0);
2870 }
2871
2872 /*
2873  * Block statistics.
2874  */
2875 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2876 typedef struct zdb_blkstats {
2877         uint64_t zb_asize;
2878         uint64_t zb_lsize;
2879         uint64_t zb_psize;
2880         uint64_t zb_count;
2881         uint64_t zb_gangs;
2882         uint64_t zb_ditto_samevdev;
2883         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2884 } zdb_blkstats_t;
2885
2886 /*
2887  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2888  */
2889 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2890 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2891 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2892 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2893
2894 static char *zdb_ot_extname[] = {
2895         "deferred free",
2896         "dedup ditto",
2897         "other",
2898         "Total",
2899 };
2900
2901 #define ZB_TOTAL        DN_MAX_LEVELS
2902
2903 typedef struct zdb_cb {
2904         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2905         uint64_t        zcb_dedup_asize;
2906         uint64_t        zcb_dedup_blocks;
2907         uint64_t        zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2908         uint64_t        zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2909             [BPE_PAYLOAD_SIZE + 1];
2910         uint64_t        zcb_start;
2911         uint64_t        zcb_lastprint;
2912         uint64_t        zcb_totalasize;
2913         uint64_t        zcb_errors[256];
2914         int             zcb_readfails;
2915         int             zcb_haderrors;
2916         spa_t           *zcb_spa;
2917 } zdb_cb_t;
2918
2919 static void
2920 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2921     dmu_object_type_t type)
2922 {
2923         uint64_t refcnt = 0;
2924         int i;
2925
2926         ASSERT(type < ZDB_OT_TOTAL);
2927
2928         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2929                 return;
2930
2931         for (i = 0; i < 4; i++) {
2932                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2933                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2934                 int equal;
2935                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2936
2937                 zb->zb_asize += BP_GET_ASIZE(bp);
2938                 zb->zb_lsize += BP_GET_LSIZE(bp);
2939                 zb->zb_psize += BP_GET_PSIZE(bp);
2940                 zb->zb_count++;
2941
2942                 /*
2943                  * The histogram is only big enough to record blocks up to
2944                  * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2945                  * "other", bucket.
2946                  */
2947                 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2948                 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2949                 zb->zb_psize_histogram[idx]++;
2950
2951                 zb->zb_gangs += BP_COUNT_GANG(bp);
2952
2953                 switch (BP_GET_NDVAS(bp)) {
2954                 case 2:
2955                         if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2956                             DVA_GET_VDEV(&bp->blk_dva[1]))
2957                                 zb->zb_ditto_samevdev++;
2958                         break;
2959                 case 3:
2960                         equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2961                             DVA_GET_VDEV(&bp->blk_dva[1])) +
2962                             (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2963                             DVA_GET_VDEV(&bp->blk_dva[2])) +
2964                             (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2965                             DVA_GET_VDEV(&bp->blk_dva[2]));
2966                         if (equal != 0)
2967                                 zb->zb_ditto_samevdev++;
2968                         break;
2969                 }
2970
2971         }
2972
2973         if (BP_IS_EMBEDDED(bp)) {
2974                 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2975                 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2976                     [BPE_GET_PSIZE(bp)]++;
2977                 return;
2978         }
2979
2980         if (dump_opt['L'])
2981                 return;
2982
2983         if (BP_GET_DEDUP(bp)) {
2984                 ddt_t *ddt;
2985                 ddt_entry_t *dde;
2986
2987                 ddt = ddt_select(zcb->zcb_spa, bp);
2988                 ddt_enter(ddt);
2989                 dde = ddt_lookup(ddt, bp, B_FALSE);
2990
2991                 if (dde == NULL) {
2992                         refcnt = 0;
2993                 } else {
2994                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2995                         ddt_phys_decref(ddp);
2996                         refcnt = ddp->ddp_refcnt;
2997                         if (ddt_phys_total_refcnt(dde) == 0)
2998                                 ddt_remove(ddt, dde);
2999                 }
3000                 ddt_exit(ddt);
3001         }
3002
3003         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
3004             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
3005             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
3006 }
3007
3008 static void
3009 zdb_blkptr_done(zio_t *zio)
3010 {
3011         spa_t *spa = zio->io_spa;
3012         blkptr_t *bp = zio->io_bp;
3013         int ioerr = zio->io_error;
3014         zdb_cb_t *zcb = zio->io_private;
3015         zbookmark_phys_t *zb = &zio->io_bookmark;
3016
3017         abd_free(zio->io_abd);
3018
3019         mutex_enter(&spa->spa_scrub_lock);
3020         spa->spa_scrub_inflight--;
3021         cv_broadcast(&spa->spa_scrub_io_cv);
3022
3023         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
3024                 char blkbuf[BP_SPRINTF_LEN];
3025
3026                 zcb->zcb_haderrors = 1;
3027                 zcb->zcb_errors[ioerr]++;
3028
3029                 if (dump_opt['b'] >= 2)
3030                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3031                 else
3032                         blkbuf[0] = '\0';
3033
3034                 (void) printf("zdb_blkptr_cb: "
3035                     "Got error %d reading "
3036                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
3037                     ioerr,
3038                     (u_longlong_t)zb->zb_objset,
3039                     (u_longlong_t)zb->zb_object,
3040                     (u_longlong_t)zb->zb_level,
3041                     (u_longlong_t)zb->zb_blkid,
3042                     blkbuf);
3043         }
3044         mutex_exit(&spa->spa_scrub_lock);
3045 }
3046
3047 static int
3048 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
3049     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
3050 {
3051         zdb_cb_t *zcb = arg;
3052         dmu_object_type_t type;
3053         boolean_t is_metadata;
3054
3055         if (bp == NULL)
3056                 return (0);
3057
3058         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
3059                 char blkbuf[BP_SPRINTF_LEN];
3060                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3061                 (void) printf("objset %llu object %llu "
3062                     "level %lld offset 0x%llx %s\n",
3063                     (u_longlong_t)zb->zb_objset,
3064                     (u_longlong_t)zb->zb_object,
3065                     (longlong_t)zb->zb_level,
3066                     (u_longlong_t)blkid2offset(dnp, bp, zb),
3067                     blkbuf);
3068         }
3069
3070         if (BP_IS_HOLE(bp))
3071                 return (0);
3072
3073         type = BP_GET_TYPE(bp);
3074
3075         zdb_count_block(zcb, zilog, bp,
3076             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
3077
3078         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
3079
3080         if (!BP_IS_EMBEDDED(bp) &&
3081             (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
3082                 size_t size = BP_GET_PSIZE(bp);
3083                 abd_t *abd = abd_alloc(size, B_FALSE);
3084                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
3085
3086                 /* If it's an intent log block, failure is expected. */
3087                 if (zb->zb_level == ZB_ZIL_LEVEL)
3088                         flags |= ZIO_FLAG_SPECULATIVE;
3089
3090                 mutex_enter(&spa->spa_scrub_lock);
3091                 while (spa->spa_scrub_inflight > max_inflight)
3092                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
3093                 spa->spa_scrub_inflight++;
3094                 mutex_exit(&spa->spa_scrub_lock);
3095
3096                 zio_nowait(zio_read(NULL, spa, bp, abd, size,
3097                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
3098         }
3099
3100         zcb->zcb_readfails = 0;
3101
3102         /* only call gethrtime() every 100 blocks */
3103         static int iters;
3104         if (++iters > 100)
3105                 iters = 0;
3106         else
3107                 return (0);
3108
3109         if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
3110                 uint64_t now = gethrtime();
3111                 char buf[10];
3112                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
3113                 int kb_per_sec =
3114                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
3115                 int sec_remaining =
3116                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
3117
3118                 zfs_nicebytes(bytes, buf, sizeof (buf));
3119                 (void) fprintf(stderr,
3120                     "\r%5s completed (%4dMB/s) "
3121                     "estimated time remaining: %uhr %02umin %02usec        ",
3122                     buf, kb_per_sec / 1024,
3123                     sec_remaining / 60 / 60,
3124                     sec_remaining / 60 % 60,
3125                     sec_remaining % 60);
3126
3127                 zcb->zcb_lastprint = now;
3128         }
3129
3130         return (0);
3131 }
3132
3133 static void
3134 zdb_leak(void *arg, uint64_t start, uint64_t size)
3135 {
3136         vdev_t *vd = arg;
3137
3138         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
3139             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
3140 }
3141
3142 static metaslab_ops_t zdb_metaslab_ops = {
3143         NULL    /* alloc */
3144 };
3145
3146 static void
3147 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
3148 {
3149         ddt_bookmark_t ddb = { 0 };
3150         ddt_entry_t dde;
3151         int error;
3152         int p;
3153
3154         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
3155                 blkptr_t blk;
3156                 ddt_phys_t *ddp = dde.dde_phys;
3157
3158                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
3159                         return;
3160
3161                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
3162
3163                 for (p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
3164                         if (ddp->ddp_phys_birth == 0)
3165                                 continue;
3166                         ddt_bp_create(ddb.ddb_checksum,
3167                             &dde.dde_key, ddp, &blk);
3168                         if (p == DDT_PHYS_DITTO) {
3169                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
3170                         } else {
3171                                 zcb->zcb_dedup_asize +=
3172                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
3173                                 zcb->zcb_dedup_blocks++;
3174                         }
3175                 }
3176                 if (!dump_opt['L']) {
3177                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
3178                         ddt_enter(ddt);
3179                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
3180                         ddt_exit(ddt);
3181                 }
3182         }
3183
3184         ASSERT(error == ENOENT);
3185 }
3186
3187 static void
3188 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
3189 {
3190         zcb->zcb_spa = spa;
3191         uint64_t c, m;
3192
3193         if (!dump_opt['L']) {
3194                 vdev_t *rvd = spa->spa_root_vdev;
3195
3196                 /*
3197                  * We are going to be changing the meaning of the metaslab's
3198                  * ms_tree.  Ensure that the allocator doesn't try to
3199                  * use the tree.
3200                  */
3201                 spa->spa_normal_class->mc_ops = &zdb_metaslab_ops;
3202                 spa->spa_log_class->mc_ops = &zdb_metaslab_ops;
3203
3204                 for (c = 0; c < rvd->vdev_children; c++) {
3205                         vdev_t *vd = rvd->vdev_child[c];
3206                         ASSERTV(metaslab_group_t *mg = vd->vdev_mg);
3207                         for (m = 0; m < vd->vdev_ms_count; m++) {
3208                                 metaslab_t *msp = vd->vdev_ms[m];
3209                                 ASSERT3P(msp->ms_group, ==, mg);
3210                                 mutex_enter(&msp->ms_lock);
3211                                 metaslab_unload(msp);
3212
3213                                 /*
3214                                  * For leak detection, we overload the metaslab
3215                                  * ms_tree to contain allocated segments
3216                                  * instead of free segments. As a result,
3217                                  * we can't use the normal metaslab_load/unload
3218                                  * interfaces.
3219                                  */
3220                                 if (msp->ms_sm != NULL) {
3221                                         (void) fprintf(stderr,
3222                                             "\rloading space map for "
3223                                             "vdev %llu of %llu, "
3224                                             "metaslab %llu of %llu ...",
3225                                             (longlong_t)c,
3226                                             (longlong_t)rvd->vdev_children,
3227                                             (longlong_t)m,
3228                                             (longlong_t)vd->vdev_ms_count);
3229
3230                                         /*
3231                                          * We don't want to spend the CPU
3232                                          * manipulating the size-ordered
3233                                          * tree, so clear the range_tree
3234                                          * ops.
3235                                          */
3236                                         msp->ms_tree->rt_ops = NULL;
3237                                         VERIFY0(space_map_load(msp->ms_sm,
3238                                             msp->ms_tree, SM_ALLOC));
3239
3240                                         if (!msp->ms_loaded)
3241                                                 msp->ms_loaded = B_TRUE;
3242                                 }
3243                                 mutex_exit(&msp->ms_lock);
3244                         }
3245                 }
3246                 (void) fprintf(stderr, "\n");
3247         }
3248
3249         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3250
3251         zdb_ddt_leak_init(spa, zcb);
3252
3253         spa_config_exit(spa, SCL_CONFIG, FTAG);
3254 }
3255
3256 static void
3257 zdb_leak_fini(spa_t *spa)
3258 {
3259         int c, m;
3260
3261         if (!dump_opt['L']) {
3262                 vdev_t *rvd = spa->spa_root_vdev;
3263                 for (c = 0; c < rvd->vdev_children; c++) {
3264                         vdev_t *vd = rvd->vdev_child[c];
3265                         ASSERTV(metaslab_group_t *mg = vd->vdev_mg);
3266                         for (m = 0; m < vd->vdev_ms_count; m++) {
3267                                 metaslab_t *msp = vd->vdev_ms[m];
3268                                 ASSERT3P(mg, ==, msp->ms_group);
3269                                 mutex_enter(&msp->ms_lock);
3270
3271                                 /*
3272                                  * The ms_tree has been overloaded to
3273                                  * contain allocated segments. Now that we
3274                                  * finished traversing all blocks, any
3275                                  * block that remains in the ms_tree
3276                                  * represents an allocated block that we
3277                                  * did not claim during the traversal.
3278                                  * Claimed blocks would have been removed
3279                                  * from the ms_tree.
3280                                  */
3281                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
3282
3283                                 if (msp->ms_loaded)
3284                                         msp->ms_loaded = B_FALSE;
3285
3286                                 mutex_exit(&msp->ms_lock);
3287                         }
3288                 }
3289         }
3290 }
3291
3292 /* ARGSUSED */
3293 static int
3294 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
3295 {
3296         zdb_cb_t *zcb = arg;
3297
3298         if (dump_opt['b'] >= 5) {
3299                 char blkbuf[BP_SPRINTF_LEN];
3300                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3301                 (void) printf("[%s] %s\n",
3302                     "deferred free", blkbuf);
3303         }
3304         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
3305         return (0);
3306 }
3307
3308 static int
3309 dump_block_stats(spa_t *spa)
3310 {
3311         zdb_cb_t zcb;
3312         zdb_blkstats_t *zb, *tzb;
3313         uint64_t norm_alloc, norm_space, total_alloc, total_found;
3314         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
3315         boolean_t leaks = B_FALSE;
3316         int e, c, err;
3317         bp_embedded_type_t i;
3318
3319         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
3320             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
3321             (dump_opt['c'] == 1) ? "metadata " : "",
3322             dump_opt['c'] ? "checksums " : "",
3323             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
3324             !dump_opt['L'] ? "nothing leaked " : "");
3325
3326         /*
3327          * Load all space maps as SM_ALLOC maps, then traverse the pool
3328          * claiming each block we discover.  If the pool is perfectly
3329          * consistent, the space maps will be empty when we're done.
3330          * Anything left over is a leak; any block we can't claim (because
3331          * it's not part of any space map) is a double allocation,
3332          * reference to a freed block, or an unclaimed log block.
3333          */
3334         bzero(&zcb, sizeof (zdb_cb_t));
3335         zdb_leak_init(spa, &zcb);
3336
3337         /*
3338          * If there's a deferred-free bplist, process that first.
3339          */
3340         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
3341             count_block_cb, &zcb, NULL);
3342         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3343                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
3344                     count_block_cb, &zcb, NULL);
3345         }
3346         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
3347                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
3348                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
3349                     &zcb, NULL));
3350         }
3351
3352         if (dump_opt['c'] > 1)
3353                 flags |= TRAVERSE_PREFETCH_DATA;
3354
3355         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
3356         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
3357         err = traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
3358
3359         /*
3360          * If we've traversed the data blocks then we need to wait for those
3361          * I/Os to complete. We leverage "The Godfather" zio to wait on
3362          * all async I/Os to complete.
3363          */
3364         if (dump_opt['c']) {
3365                 for (c = 0; c < max_ncpus; c++) {
3366                         (void) zio_wait(spa->spa_async_zio_root[c]);
3367                         spa->spa_async_zio_root[c] = zio_root(spa, NULL, NULL,
3368                             ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
3369                             ZIO_FLAG_GODFATHER);
3370                 }
3371         }
3372
3373         /*
3374          * Done after zio_wait() since zcb_haderrors is modified in
3375          * zdb_blkptr_done()
3376          */
3377         zcb.zcb_haderrors |= err;
3378
3379         if (zcb.zcb_haderrors) {
3380                 (void) printf("\nError counts:\n\n");
3381                 (void) printf("\t%5s  %s\n", "errno", "count");
3382                 for (e = 0; e < 256; e++) {
3383                         if (zcb.zcb_errors[e] != 0) {
3384                                 (void) printf("\t%5d  %llu\n",
3385                                     e, (u_longlong_t)zcb.zcb_errors[e]);
3386                         }
3387                 }
3388         }
3389
3390         /*
3391          * Report any leaked segments.
3392          */
3393         zdb_leak_fini(spa);
3394
3395         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
3396
3397         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
3398         norm_space = metaslab_class_get_space(spa_normal_class(spa));
3399
3400         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
3401         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
3402
3403         if (total_found == total_alloc) {
3404                 if (!dump_opt['L'])
3405                         (void) printf("\n\tNo leaks (block sum matches space"
3406                             " maps exactly)\n");
3407         } else {
3408                 (void) printf("block traversal size %llu != alloc %llu "
3409                     "(%s %lld)\n",
3410                     (u_longlong_t)total_found,
3411                     (u_longlong_t)total_alloc,
3412                     (dump_opt['L']) ? "unreachable" : "leaked",
3413                     (longlong_t)(total_alloc - total_found));
3414                 leaks = B_TRUE;
3415         }
3416
3417         if (tzb->zb_count == 0)
3418                 return (2);
3419
3420         (void) printf("\n");
3421         (void) printf("\tbp count:      %10llu\n",
3422             (u_longlong_t)tzb->zb_count);
3423         (void) printf("\tganged count:  %10llu\n",
3424             (longlong_t)tzb->zb_gangs);
3425         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
3426             (u_longlong_t)tzb->zb_lsize,
3427             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
3428         (void) printf("\tbp physical:   %10llu      avg:"
3429             " %6llu     compression: %6.2f\n",
3430             (u_longlong_t)tzb->zb_psize,
3431             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
3432             (double)tzb->zb_lsize / tzb->zb_psize);
3433         (void) printf("\tbp allocated:  %10llu      avg:"
3434             " %6llu     compression: %6.2f\n",
3435             (u_longlong_t)tzb->zb_asize,
3436             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
3437             (double)tzb->zb_lsize / tzb->zb_asize);
3438         (void) printf("\tbp deduped:    %10llu    ref>1:"
3439             " %6llu   deduplication: %6.2f\n",
3440             (u_longlong_t)zcb.zcb_dedup_asize,
3441             (u_longlong_t)zcb.zcb_dedup_blocks,
3442             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
3443         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
3444             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
3445
3446         for (i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
3447                 if (zcb.zcb_embedded_blocks[i] == 0)
3448                         continue;
3449                 (void) printf("\n");
3450                 (void) printf("\tadditional, non-pointer bps of type %u: "
3451                     "%10llu\n",
3452                     i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
3453
3454                 if (dump_opt['b'] >= 3) {
3455                         (void) printf("\t number of (compressed) bytes:  "
3456                             "number of bps\n");
3457                         dump_histogram(zcb.zcb_embedded_histogram[i],
3458                             sizeof (zcb.zcb_embedded_histogram[i]) /
3459                             sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
3460                 }
3461         }
3462
3463         if (tzb->zb_ditto_samevdev != 0) {
3464                 (void) printf("\tDittoed blocks on same vdev: %llu\n",
3465                     (longlong_t)tzb->zb_ditto_samevdev);
3466         }
3467
3468         if (dump_opt['b'] >= 2) {
3469                 int l, t, level;
3470                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
3471                     "\t  avg\t comp\t%%Total\tType\n");
3472
3473                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
3474                         char csize[32], lsize[32], psize[32], asize[32];
3475                         char avg[32], gang[32];
3476                         char *typename;
3477
3478                         if (t < DMU_OT_NUMTYPES)
3479                                 typename = dmu_ot[t].ot_name;
3480                         else
3481                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
3482
3483                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
3484                                 (void) printf("%6s\t%5s\t%5s\t%5s"
3485                                     "\t%5s\t%5s\t%6s\t%s\n",
3486                                     "-",
3487                                     "-",
3488                                     "-",
3489                                     "-",
3490                                     "-",
3491                                     "-",
3492                                     "-",
3493                                     typename);
3494                                 continue;
3495                         }
3496
3497                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
3498                                 level = (l == -1 ? ZB_TOTAL : l);
3499                                 zb = &zcb.zcb_type[level][t];
3500
3501                                 if (zb->zb_asize == 0)
3502                                         continue;
3503
3504                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
3505                                         continue;
3506
3507                                 if (level == 0 && zb->zb_asize ==
3508                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
3509                                         continue;
3510
3511                                 zdb_nicenum(zb->zb_count, csize);
3512                                 zdb_nicenum(zb->zb_lsize, lsize);
3513                                 zdb_nicenum(zb->zb_psize, psize);
3514                                 zdb_nicenum(zb->zb_asize, asize);
3515                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
3516                                 zdb_nicenum(zb->zb_gangs, gang);
3517
3518                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
3519                                     "\t%5.2f\t%6.2f\t",
3520                                     csize, lsize, psize, asize, avg,
3521                                     (double)zb->zb_lsize / zb->zb_psize,
3522                                     100.0 * zb->zb_asize / tzb->zb_asize);
3523
3524                                 if (level == ZB_TOTAL)
3525                                         (void) printf("%s\n", typename);
3526                                 else
3527                                         (void) printf("    L%d %s\n",
3528                                             level, typename);
3529
3530                                 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
3531                                         (void) printf("\t number of ganged "
3532                                             "blocks: %s\n", gang);
3533                                 }
3534
3535                                 if (dump_opt['b'] >= 4) {
3536                                         (void) printf("psize "
3537                                             "(in 512-byte sectors): "
3538                                             "number of blocks\n");
3539                                         dump_histogram(zb->zb_psize_histogram,
3540                                             PSIZE_HISTO_SIZE, 0);
3541                                 }
3542                         }
3543                 }
3544         }
3545
3546         (void) printf("\n");
3547
3548         if (leaks)
3549                 return (2);
3550
3551         if (zcb.zcb_haderrors)
3552                 return (3);
3553
3554         return (0);
3555 }
3556
3557 typedef struct zdb_ddt_entry {
3558         ddt_key_t       zdde_key;
3559         uint64_t        zdde_ref_blocks;
3560         uint64_t        zdde_ref_lsize;
3561         uint64_t        zdde_ref_psize;
3562         uint64_t        zdde_ref_dsize;
3563         avl_node_t      zdde_node;
3564 } zdb_ddt_entry_t;
3565
3566 /* ARGSUSED */
3567 static int
3568 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
3569     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
3570 {
3571         avl_tree_t *t = arg;
3572         avl_index_t where;
3573         zdb_ddt_entry_t *zdde, zdde_search;
3574
3575         if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
3576                 return (0);
3577
3578         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
3579                 (void) printf("traversing objset %llu, %llu objects, "
3580                     "%lu blocks so far\n",
3581                     (u_longlong_t)zb->zb_objset,
3582                     (u_longlong_t)BP_GET_FILL(bp),
3583                     avl_numnodes(t));
3584         }
3585
3586         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
3587             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
3588                 return (0);
3589
3590         ddt_key_fill(&zdde_search.zdde_key, bp);
3591
3592         zdde = avl_find(t, &zdde_search, &where);
3593
3594         if (zdde == NULL) {
3595                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
3596                 zdde->zdde_key = zdde_search.zdde_key;
3597                 avl_insert(t, zdde, where);
3598         }
3599
3600         zdde->zdde_ref_blocks += 1;
3601         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
3602         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
3603         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
3604
3605         return (0);
3606 }
3607
3608 static void
3609 dump_simulated_ddt(spa_t *spa)
3610 {
3611         avl_tree_t t;
3612         void *cookie = NULL;
3613         zdb_ddt_entry_t *zdde;
3614         ddt_histogram_t ddh_total;
3615         ddt_stat_t dds_total;
3616
3617         bzero(&ddh_total, sizeof (ddt_histogram_t));
3618         bzero(&dds_total, sizeof (ddt_stat_t));
3619
3620         avl_create(&t, ddt_entry_compare,
3621             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
3622
3623         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3624
3625         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
3626             zdb_ddt_add_cb, &t);
3627
3628         spa_config_exit(spa, SCL_CONFIG, FTAG);
3629
3630         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
3631                 ddt_stat_t dds;
3632                 uint64_t refcnt = zdde->zdde_ref_blocks;
3633                 ASSERT(refcnt != 0);
3634
3635                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
3636                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
3637                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
3638                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
3639
3640                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
3641                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
3642                 dds.dds_ref_psize = zdde->zdde_ref_psize;
3643                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
3644
3645                 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
3646                     &dds, 0);
3647
3648                 umem_free(zdde, sizeof (*zdde));
3649         }
3650
3651         avl_destroy(&t);
3652
3653         ddt_histogram_stat(&dds_total, &ddh_total);
3654
3655         (void) printf("Simulated DDT histogram:\n");
3656
3657         zpool_dump_ddt(&dds_total, &ddh_total);
3658
3659         dump_dedup_ratio(&dds_total);
3660 }
3661
3662 static void
3663 dump_zpool(spa_t *spa)
3664 {
3665         dsl_pool_t *dp = spa_get_dsl(spa);
3666         int rc = 0;
3667
3668         if (dump_opt['S']) {
3669                 dump_simulated_ddt(spa);
3670                 return;
3671         }
3672
3673         if (!dump_opt['e'] && dump_opt['C'] > 1) {
3674                 (void) printf("\nCached configuration:\n");
3675                 dump_nvlist(spa->spa_config, 8);
3676         }
3677
3678         if (dump_opt['C'])
3679                 dump_config(spa);
3680
3681         if (dump_opt['u'])
3682                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
3683
3684         if (dump_opt['D'])
3685                 dump_all_ddts(spa);
3686
3687         if (dump_opt['d'] > 2 || dump_opt['m'])
3688                 dump_metaslabs(spa);
3689         if (dump_opt['M'])
3690                 dump_metaslab_groups(spa);
3691
3692         if (dump_opt['d'] || dump_opt['i']) {
3693                 spa_feature_t f;
3694
3695                 dump_dir(dp->dp_meta_objset);
3696                 if (dump_opt['d'] >= 3) {
3697                         dump_full_bpobj(&spa->spa_deferred_bpobj,
3698                             "Deferred frees", 0);
3699                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3700                                 dump_full_bpobj(
3701                                     &spa->spa_dsl_pool->dp_free_bpobj,
3702                                     "Pool snapshot frees", 0);
3703                         }
3704
3705                         if (spa_feature_is_active(spa,
3706                             SPA_FEATURE_ASYNC_DESTROY)) {
3707                                 dump_bptree(spa->spa_meta_objset,
3708                                     spa->spa_dsl_pool->dp_bptree_obj,
3709                                     "Pool dataset frees");
3710                         }
3711                         dump_dtl(spa->spa_root_vdev, 0);
3712                 }
3713                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
3714                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
3715
3716                 for (f = 0; f < SPA_FEATURES; f++) {
3717                         uint64_t refcount;
3718
3719                         if (!(spa_feature_table[f].fi_flags &
3720                             ZFEATURE_FLAG_PER_DATASET) ||
3721                             !spa_feature_is_enabled(spa, f)) {
3722                                 ASSERT0(dataset_feature_count[f]);
3723                                 continue;
3724                         }
3725                         if (feature_get_refcount(spa, &spa_feature_table[f],
3726                             &refcount) == ENOTSUP)
3727                                 continue;
3728                         if (dataset_feature_count[f] != refcount) {
3729                                 (void) printf("%s feature refcount mismatch: "
3730                                     "%lld datasets != %lld refcount\n",
3731                                     spa_feature_table[f].fi_uname,
3732                                     (longlong_t)dataset_feature_count[f],
3733                                     (longlong_t)refcount);
3734                                 rc = 2;
3735                         } else {
3736                                 (void) printf("Verified %s feature refcount "
3737                                     "of %llu is correct\n",
3738                                     spa_feature_table[f].fi_uname,
3739                                     (longlong_t)refcount);
3740                         }
3741                 }
3742         }
3743         if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
3744                 rc = dump_block_stats(spa);
3745
3746         if (rc == 0)
3747                 rc = verify_spacemap_refcounts(spa);
3748
3749         if (dump_opt['s'])
3750                 show_pool_stats(spa);
3751
3752         if (dump_opt['h'])
3753                 dump_history(spa);
3754
3755         if (rc != 0) {
3756                 dump_debug_buffer();
3757                 exit(rc);
3758         }
3759 }
3760
3761 #define ZDB_FLAG_CHECKSUM       0x0001
3762 #define ZDB_FLAG_DECOMPRESS     0x0002
3763 #define ZDB_FLAG_BSWAP          0x0004
3764 #define ZDB_FLAG_GBH            0x0008
3765 #define ZDB_FLAG_INDIRECT       0x0010
3766 #define ZDB_FLAG_PHYS           0x0020
3767 #define ZDB_FLAG_RAW            0x0040
3768 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
3769
3770 int flagbits[256];
3771
3772 static void
3773 zdb_print_blkptr(blkptr_t *bp, int flags)
3774 {
3775         char blkbuf[BP_SPRINTF_LEN];
3776
3777         if (flags & ZDB_FLAG_BSWAP)
3778                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3779
3780         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3781         (void) printf("%s\n", blkbuf);
3782 }
3783
3784 static void
3785 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3786 {
3787         int i;
3788
3789         for (i = 0; i < nbps; i++)
3790                 zdb_print_blkptr(&bp[i], flags);
3791 }
3792
3793 static void
3794 zdb_dump_gbh(void *buf, int flags)
3795 {
3796         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3797 }
3798
3799 static void
3800 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3801 {
3802         if (flags & ZDB_FLAG_BSWAP)
3803                 byteswap_uint64_array(buf, size);
3804         VERIFY(write(fileno(stdout), buf, size) == size);
3805 }
3806
3807 static void
3808 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3809 {
3810         uint64_t *d = (uint64_t *)buf;
3811         int nwords = size / sizeof (uint64_t);
3812         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3813         int i, j;
3814         char *hdr, *c;
3815
3816
3817         if (do_bswap)
3818                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
3819         else
3820                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
3821
3822         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
3823
3824 #ifdef _LITTLE_ENDIAN
3825         /* correct the endianness */
3826         do_bswap = !do_bswap;
3827 #endif
3828         for (i = 0; i < nwords; i += 2) {
3829                 (void) printf("%06llx:  %016llx  %016llx  ",
3830                     (u_longlong_t)(i * sizeof (uint64_t)),
3831                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3832                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3833
3834                 c = (char *)&d[i];
3835                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3836                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3837                 (void) printf("\n");
3838         }
3839 }
3840
3841 /*
3842  * There are two acceptable formats:
3843  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
3844  *      child[.child]*    - For example: 0.1.1
3845  *
3846  * The second form can be used to specify arbitrary vdevs anywhere
3847  * in the hierarchy.  For example, in a pool with a mirror of
3848  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3849  */
3850 static vdev_t *
3851 zdb_vdev_lookup(vdev_t *vdev, char *path)
3852 {
3853         char *s, *p, *q;
3854         int i;
3855
3856         if (vdev == NULL)
3857                 return (NULL);
3858
3859         /* First, assume the x.x.x.x format */
3860         i = (int)strtoul(path, &s, 10);
3861         if (s == path || (s && *s != '.' && *s != '\0'))
3862                 goto name;
3863         if (i < 0 || i >= vdev->vdev_children)
3864                 return (NULL);
3865
3866         vdev = vdev->vdev_child[i];
3867         if (s && *s == '\0')
3868                 return (vdev);
3869         return (zdb_vdev_lookup(vdev, s+1));
3870
3871 name:
3872         for (i = 0; i < vdev->vdev_children; i++) {
3873                 vdev_t *vc = vdev->vdev_child[i];
3874
3875                 if (vc->vdev_path == NULL) {
3876                         vc = zdb_vdev_lookup(vc, path);
3877                         if (vc == NULL)
3878                                 continue;
3879                         else
3880                                 return (vc);
3881                 }
3882
3883                 p = strrchr(vc->vdev_path, '/');
3884                 p = p ? p + 1 : vc->vdev_path;
3885                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3886
3887                 if (strcmp(vc->vdev_path, path) == 0)
3888                         return (vc);
3889                 if (strcmp(p, path) == 0)
3890                         return (vc);
3891                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3892                         return (vc);
3893         }
3894
3895         return (NULL);
3896 }
3897
3898 /*
3899  * Read a block from a pool and print it out.  The syntax of the
3900  * block descriptor is:
3901  *
3902  *      pool:vdev_specifier:offset:size[:flags]
3903  *
3904  *      pool           - The name of the pool you wish to read from
3905  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3906  *      offset         - offset, in hex, in bytes
3907  *      size           - Amount of data to read, in hex, in bytes
3908  *      flags          - A string of characters specifying options
3909  *               b: Decode a blkptr at given offset within block
3910  *              *c: Calculate and display checksums
3911  *               d: Decompress data before dumping
3912  *               e: Byteswap data before dumping
3913  *               g: Display data as a gang block header
3914  *               i: Display as an indirect block
3915  *               p: Do I/O to physical offset
3916  *               r: Dump raw data to stdout
3917  *
3918  *              * = not yet implemented
3919  */
3920 static void
3921 zdb_read_block(char *thing, spa_t *spa)
3922 {
3923         blkptr_t blk, *bp = &blk;
3924         dva_t *dva = bp->blk_dva;
3925         int flags = 0;
3926         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3927         zio_t *zio;
3928         vdev_t *vd;
3929         abd_t *pabd;
3930         void *lbuf, *buf;
3931         char *s, *p, *dup, *vdev, *flagstr;
3932         int i, error;
3933         boolean_t borrowed = B_FALSE;
3934
3935         dup = strdup(thing);
3936         s = strtok(dup, ":");
3937         vdev = s ? s : "";
3938         s = strtok(NULL, ":");
3939         offset = strtoull(s ? s : "", NULL, 16);
3940         s = strtok(NULL, ":");
3941         size = strtoull(s ? s : "", NULL, 16);
3942         s = strtok(NULL, ":");
3943         flagstr = s ? s : "";
3944
3945         s = NULL;
3946         if (size == 0)
3947                 s = "size must not be zero";
3948         if (!IS_P2ALIGNED(size, DEV_BSIZE))
3949                 s = "size must be a multiple of sector size";
3950         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3951                 s = "offset must be a multiple of sector size";
3952         if (s) {
3953                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3954                 free(dup);
3955                 return;
3956         }
3957
3958         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3959                 for (i = 0; flagstr[i]; i++) {
3960                         int bit = flagbits[(uchar_t)flagstr[i]];
3961
3962                         if (bit == 0) {
3963                                 (void) printf("***Invalid flag: %c\n",
3964                                     flagstr[i]);
3965                                 continue;
3966                         }
3967                         flags |= bit;
3968
3969                         /* If it's not something with an argument, keep going */
3970                         if ((bit & (ZDB_FLAG_CHECKSUM |
3971                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3972                                 continue;
3973
3974                         p = &flagstr[i + 1];
3975                         if (bit == ZDB_FLAG_PRINT_BLKPTR) {
3976                                 blkptr_offset = strtoull(p, &p, 16);
3977                                 i = p - &flagstr[i + 1];
3978                         }
3979                         if (*p != ':' && *p != '\0') {
3980                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3981                                 free(dup);
3982                                 return;
3983                         }
3984                 }
3985         }
3986
3987         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3988         if (vd == NULL) {
3989                 (void) printf("***Invalid vdev: %s\n", vdev);
3990                 free(dup);
3991                 return;
3992         } else {
3993                 if (vd->vdev_path)
3994                         (void) fprintf(stderr, "Found vdev: %s\n",
3995                             vd->vdev_path);
3996                 else
3997                         (void) fprintf(stderr, "Found vdev type: %s\n",
3998                             vd->vdev_ops->vdev_op_type);
3999         }
4000
4001         psize = size;
4002         lsize = size;
4003
4004         pabd = abd_alloc_for_io(SPA_MAXBLOCKSIZE, B_FALSE);
4005         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
4006
4007         BP_ZERO(bp);
4008
4009         DVA_SET_VDEV(&dva[0], vd->vdev_id);
4010         DVA_SET_OFFSET(&dva[0], offset);
4011         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
4012         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
4013
4014         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
4015
4016         BP_SET_LSIZE(bp, lsize);
4017         BP_SET_PSIZE(bp, psize);
4018         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
4019         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
4020         BP_SET_TYPE(bp, DMU_OT_NONE);
4021         BP_SET_LEVEL(bp, 0);
4022         BP_SET_DEDUP(bp, 0);
4023         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
4024
4025         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
4026         zio = zio_root(spa, NULL, NULL, 0);
4027
4028         if (vd == vd->vdev_top) {
4029                 /*
4030                  * Treat this as a normal block read.
4031                  */
4032                 zio_nowait(zio_read(zio, spa, bp, pabd, psize, NULL, NULL,
4033                     ZIO_PRIORITY_SYNC_READ,
4034                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
4035         } else {
4036                 /*
4037                  * Treat this as a vdev child I/O.
4038                  */
4039                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pabd,
4040                     psize, ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
4041                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
4042                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
4043                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
4044         }
4045
4046         error = zio_wait(zio);
4047         spa_config_exit(spa, SCL_STATE, FTAG);
4048
4049         if (error) {
4050                 (void) printf("Read of %s failed, error: %d\n", thing, error);
4051                 goto out;
4052         }
4053
4054         if (flags & ZDB_FLAG_DECOMPRESS) {
4055                 /*
4056                  * We don't know how the data was compressed, so just try
4057                  * every decompress function at every inflated blocksize.
4058                  */
4059                 enum zio_compress c;
4060                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
4061
4062                 /*
4063                  * XXX - On the one hand, with SPA_MAXBLOCKSIZE at 16MB,
4064                  * this could take a while and we should let the user know
4065                  * we are not stuck.  On the other hand, printing progress
4066                  * info gets old after a while.  What to do?
4067                  */
4068                 for (lsize = psize + SPA_MINBLOCKSIZE;
4069                     lsize <= SPA_MAXBLOCKSIZE; lsize += SPA_MINBLOCKSIZE) {
4070                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
4071                                 /*
4072                                  * ZLE can easily decompress non zle stream.
4073                                  * So have an option to disable it.
4074                                  */
4075                                 if (c == ZIO_COMPRESS_ZLE &&
4076                                     getenv("ZDB_NO_ZLE"))
4077                                         continue;
4078
4079                                 (void) fprintf(stderr,
4080                                     "Trying %05llx -> %05llx (%s)\n",
4081                                     (u_longlong_t)psize, (u_longlong_t)lsize,
4082                                     zio_compress_table[c].ci_name);
4083
4084                                 /*
4085                                  * We randomize lbuf2, and decompress to both
4086                                  * lbuf and lbuf2. This way, we will know if
4087                                  * decompression fill exactly to lsize.
4088                                  */
4089                                 VERIFY0(random_get_pseudo_bytes(lbuf2, lsize));
4090
4091                                 if (zio_decompress_data(c, pabd,
4092                                     lbuf, psize, lsize) == 0 &&
4093                                     zio_decompress_data(c, pabd,
4094                                     lbuf2, psize, lsize) == 0 &&
4095                                     bcmp(lbuf, lbuf2, lsize) == 0)
4096                                         break;
4097                         }
4098                         if (c != ZIO_COMPRESS_FUNCTIONS)
4099                                 break;
4100                 }
4101                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
4102
4103                 if (lsize > SPA_MAXBLOCKSIZE) {
4104                         (void) printf("Decompress of %s failed\n", thing);
4105                         goto out;
4106                 }
4107                 buf = lbuf;
4108                 size = lsize;
4109         } else {
4110                 size = psize;
4111                 buf = abd_borrow_buf_copy(pabd, size);
4112                 borrowed = B_TRUE;
4113         }
4114
4115         if (flags & ZDB_FLAG_PRINT_BLKPTR)
4116                 zdb_print_blkptr((blkptr_t *)(void *)
4117                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
4118         else if (flags & ZDB_FLAG_RAW)
4119                 zdb_dump_block_raw(buf, size, flags);
4120         else if (flags & ZDB_FLAG_INDIRECT)
4121                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
4122                     flags);
4123         else if (flags & ZDB_FLAG_GBH)
4124                 zdb_dump_gbh(buf, flags);
4125         else
4126                 zdb_dump_block(thing, buf, size, flags);
4127
4128         if (borrowed)
4129                 abd_return_buf_copy(pabd, buf, size);
4130
4131 out:
4132         abd_free(pabd);
4133         umem_free(lbuf, SPA_MAXBLOCKSIZE);
4134         free(dup);
4135 }
4136
4137 static void
4138 zdb_embedded_block(char *thing)
4139 {
4140         blkptr_t bp;
4141         unsigned long long *words = (void *)&bp;
4142         char *buf;
4143         int err;
4144
4145         buf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
4146
4147         bzero(&bp, sizeof (bp));
4148         err = sscanf(thing, "%llx:%llx:%llx:%llx:%llx:%llx:%llx:%llx:"
4149             "%llx:%llx:%llx:%llx:%llx:%llx:%llx:%llx",
4150             words + 0, words + 1, words + 2, words + 3,
4151             words + 4, words + 5, words + 6, words + 7,
4152             words + 8, words + 9, words + 10, words + 11,
4153             words + 12, words + 13, words + 14, words + 15);
4154         if (err != 16) {
4155                 (void) printf("invalid input format\n");
4156                 exit(1);
4157         }
4158         ASSERT3U(BPE_GET_LSIZE(&bp), <=, SPA_MAXBLOCKSIZE);
4159         err = decode_embedded_bp(&bp, buf, BPE_GET_LSIZE(&bp));
4160         if (err != 0) {
4161                 (void) printf("decode failed: %u\n", err);
4162                 exit(1);
4163         }
4164         zdb_dump_block_raw(buf, BPE_GET_LSIZE(&bp), 0);
4165         umem_free(buf, SPA_MAXBLOCKSIZE);
4166 }
4167
4168 int
4169 main(int argc, char **argv)
4170 {
4171         int i, c;
4172         struct rlimit rl = { 1024, 1024 };
4173         spa_t *spa = NULL;
4174         objset_t *os = NULL;
4175         int dump_all = 1;
4176         int verbose = 0;
4177         int error = 0;
4178         char **searchdirs = NULL;
4179         int nsearch = 0;
4180         char *target;
4181         nvlist_t *policy = NULL;
4182         uint64_t max_txg = UINT64_MAX;
4183         int flags = ZFS_IMPORT_MISSING_LOG;
4184         int rewind = ZPOOL_NEVER_REWIND;
4185         char *spa_config_path_env;
4186         boolean_t target_is_spa = B_TRUE;
4187
4188         (void) setrlimit(RLIMIT_NOFILE, &rl);
4189         (void) enable_extended_FILE_stdio(-1, -1);
4190
4191         dprintf_setup(&argc, argv);
4192
4193         /*
4194          * If there is an environment variable SPA_CONFIG_PATH it overrides
4195          * default spa_config_path setting. If -U flag is specified it will
4196          * override this environment variable settings once again.
4197          */
4198         spa_config_path_env = getenv("SPA_CONFIG_PATH");
4199         if (spa_config_path_env != NULL)
4200                 spa_config_path = spa_config_path_env;
4201
4202         while ((c = getopt(argc, argv,
4203             "AbcCdDeEFGhiI:lLmMo:Op:PqRsSt:uU:vVx:X")) != -1) {
4204                 switch (c) {
4205                 case 'b':
4206                 case 'c':
4207                 case 'C':
4208                 case 'd':
4209                 case 'D':
4210                 case 'E':
4211                 case 'G':
4212                 case 'h':
4213                 case 'i':
4214                 case 'l':
4215                 case 'm':
4216                 case 'M':
4217                 case 'O':
4218                 case 'R':
4219                 case 's':
4220                 case 'S':
4221                 case 'u':
4222                         dump_opt[c]++;
4223                         dump_all = 0;
4224                         break;
4225                 case 'A':
4226                 case 'e':
4227                 case 'F':
4228                 case 'L':
4229                 case 'P':
4230                 case 'q':
4231                 case 'X':
4232                         dump_opt[c]++;
4233                         break;
4234                 /* NB: Sort single match options below. */
4235                 case 'I':
4236                         max_inflight = strtoull(optarg, NULL, 0);
4237                         if (max_inflight == 0) {
4238                                 (void) fprintf(stderr, "maximum number "
4239                                     "of inflight I/Os must be greater "
4240                                     "than 0\n");
4241                                 usage();
4242                         }
4243                         break;
4244                 case 'o':
4245                         error = set_global_var(optarg);
4246                         if (error != 0)
4247                                 usage();
4248                         break;
4249                 case 'p':
4250                         if (searchdirs == NULL) {
4251                                 searchdirs = umem_alloc(sizeof (char *),
4252                                     UMEM_NOFAIL);
4253                         } else {
4254                                 char **tmp = umem_alloc((nsearch + 1) *
4255                                     sizeof (char *), UMEM_NOFAIL);
4256                                 bcopy(searchdirs, tmp, nsearch *
4257                                     sizeof (char *));
4258                                 umem_free(searchdirs,
4259                                     nsearch * sizeof (char *));
4260                                 searchdirs = tmp;
4261                         }
4262                         searchdirs[nsearch++] = optarg;
4263                         break;
4264                 case 't':
4265                         max_txg = strtoull(optarg, NULL, 0);
4266                         if (max_txg < TXG_INITIAL) {
4267                                 (void) fprintf(stderr, "incorrect txg "
4268                                     "specified: %s\n", optarg);
4269                                 usage();
4270                         }
4271                         break;
4272                 case 'U':
4273                         spa_config_path = optarg;
4274                         if (spa_config_path[0] != '/') {
4275                                 (void) fprintf(stderr,
4276                                     "cachefile must be an absolute path "
4277                                     "(i.e. start with a slash)\n");
4278                                 usage();
4279                         }
4280                         break;
4281                 case 'v':
4282                         verbose++;
4283                         break;
4284                 case 'V':
4285                         flags = ZFS_IMPORT_VERBATIM;
4286                         break;
4287                 case 'x':
4288                         vn_dumpdir = optarg;
4289                         break;
4290                 default:
4291                         usage();
4292                         break;
4293                 }
4294         }
4295
4296         if (!dump_opt['e'] && searchdirs != NULL) {
4297                 (void) fprintf(stderr, "-p option requires use of -e\n");
4298                 usage();
4299         }
4300
4301 #if defined(_LP64)
4302         /*
4303          * ZDB does not typically re-read blocks; therefore limit the ARC
4304          * to 256 MB, which can be used entirely for metadata.
4305          */
4306         zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
4307 #endif
4308
4309         /*
4310          * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
4311          * "zdb -b" uses traversal prefetch which uses async reads.
4312          * For good performance, let several of them be active at once.
4313          */
4314         zfs_vdev_async_read_max_active = 10;
4315
4316         /*
4317          * Disable reference tracking for better performance.
4318          */
4319         reference_tracking_enable = B_FALSE;
4320
4321         kernel_init(FREAD);
4322         if ((g_zfs = libzfs_init()) == NULL) {
4323                 (void) fprintf(stderr, "%s", libzfs_error_init(errno));
4324                 return (1);
4325         }
4326
4327         if (dump_all)
4328                 verbose = MAX(verbose, 1);
4329
4330         for (c = 0; c < 256; c++) {
4331                 if (dump_all && strchr("AeEFlLOPRSX", c) == NULL)
4332                         dump_opt[c] = 1;
4333                 if (dump_opt[c])
4334                         dump_opt[c] += verbose;
4335         }
4336
4337         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
4338         zfs_recover = (dump_opt['A'] > 1);
4339
4340         argc -= optind;
4341         argv += optind;
4342
4343         if (argc < 2 && dump_opt['R'])
4344                 usage();
4345
4346         if (dump_opt['E']) {
4347                 if (argc != 1)
4348                         usage();
4349                 zdb_embedded_block(argv[0]);
4350                 return (0);
4351         }
4352
4353         if (argc < 1) {
4354                 if (!dump_opt['e'] && dump_opt['C']) {
4355                         dump_cachefile(spa_config_path);
4356                         return (0);
4357                 }
4358                 usage();
4359         }
4360
4361         if (dump_opt['l'])
4362                 return (dump_label(argv[0]));
4363
4364         if (dump_opt['O']) {
4365                 if (argc != 2)
4366                         usage();
4367                 dump_opt['v'] = verbose + 3;
4368                 return (dump_path(argv[0], argv[1]));
4369         }
4370
4371         if (dump_opt['X'] || dump_opt['F'])
4372                 rewind = ZPOOL_DO_REWIND |
4373                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
4374
4375         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
4376             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
4377             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
4378                 fatal("internal error: %s", strerror(ENOMEM));
4379
4380         error = 0;
4381         target = argv[0];
4382
4383         if (dump_opt['e']) {
4384                 importargs_t args = { 0 };
4385                 nvlist_t *cfg = NULL;
4386
4387                 args.paths = nsearch;
4388                 args.path = searchdirs;
4389                 args.can_be_active = B_TRUE;
4390
4391                 error = zpool_tryimport(g_zfs, target, &cfg, &args);
4392                 if (error == 0) {
4393                         if (nvlist_add_nvlist(cfg,
4394                             ZPOOL_REWIND_POLICY, policy) != 0) {
4395                                 fatal("can't open '%s': %s",
4396                                     target, strerror(ENOMEM));
4397                         }
4398
4399                         /*
4400                          * Disable the activity check to allow examination of
4401                          * active pools.
4402                          */
4403                         if (dump_opt['C'] > 1) {
4404                                 (void) printf("\nConfiguration for import:\n");
4405                                 dump_nvlist(cfg, 8);
4406                         }
4407                         error = spa_import(target, cfg, NULL,
4408                             flags | ZFS_IMPORT_SKIP_MMP);
4409                 }
4410         }
4411
4412         if (strpbrk(target, "/@") != NULL) {
4413                 size_t targetlen;
4414
4415                 target_is_spa = B_FALSE;
4416                 targetlen = strlen(target);
4417                 if (targetlen && target[targetlen - 1] == '/')
4418                         target[targetlen - 1] = '\0';
4419         }
4420
4421         if (error == 0) {
4422                 if (target_is_spa || dump_opt['R']) {
4423                         /*
4424                          * Disable the activity check to allow examination of
4425                          * active pools.
4426                          */
4427                         mutex_enter(&spa_namespace_lock);
4428                         if ((spa = spa_lookup(target)) != NULL) {
4429                                 spa->spa_import_flags |= ZFS_IMPORT_SKIP_MMP;
4430                         }
4431                         mutex_exit(&spa_namespace_lock);
4432
4433                         error = spa_open_rewind(target, &spa, FTAG, policy,
4434                             NULL);
4435                         if (error) {
4436                                 /*
4437                                  * If we're missing the log device then
4438                                  * try opening the pool after clearing the
4439                                  * log state.
4440                                  */
4441                                 mutex_enter(&spa_namespace_lock);
4442                                 if ((spa = spa_lookup(target)) != NULL &&
4443                                     spa->spa_log_state == SPA_LOG_MISSING) {
4444                                         spa->spa_log_state = SPA_LOG_CLEAR;
4445                                         error = 0;
4446                                 }
4447                                 mutex_exit(&spa_namespace_lock);
4448
4449                                 if (!error) {
4450                                         error = spa_open_rewind(target, &spa,
4451                                             FTAG, policy, NULL);
4452                                 }
4453                         }
4454                 } else {
4455                         error = open_objset(target, DMU_OST_ANY, FTAG, &os);
4456                 }
4457         }
4458         nvlist_free(policy);
4459
4460         if (error)
4461                 fatal("can't open '%s': %s", target, strerror(error));
4462
4463         argv++;
4464         argc--;
4465         if (!dump_opt['R']) {
4466                 if (argc > 0) {
4467                         zopt_objects = argc;
4468                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
4469                         for (i = 0; i < zopt_objects; i++) {
4470                                 errno = 0;
4471                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
4472                                 if (zopt_object[i] == 0 && errno != 0)
4473                                         fatal("bad number %s: %s",
4474                                             argv[i], strerror(errno));
4475                         }
4476                 }
4477                 if (os != NULL) {
4478                         dump_dir(os);
4479                 } else if (zopt_objects > 0 && !dump_opt['m']) {
4480                         dump_dir(spa->spa_meta_objset);
4481                 } else {
4482                         dump_zpool(spa);
4483                 }
4484         } else {
4485                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
4486                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
4487                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
4488                 flagbits['e'] = ZDB_FLAG_BSWAP;
4489                 flagbits['g'] = ZDB_FLAG_GBH;
4490                 flagbits['i'] = ZDB_FLAG_INDIRECT;
4491                 flagbits['p'] = ZDB_FLAG_PHYS;
4492                 flagbits['r'] = ZDB_FLAG_RAW;
4493
4494                 for (i = 0; i < argc; i++)
4495                         zdb_read_block(argv[i], spa);
4496         }
4497
4498         if (os != NULL)
4499                 close_objset(os, FTAG);
4500         else
4501                 spa_close(spa, FTAG);
4502
4503         fuid_table_destroy();
4504
4505         dump_debug_buffer();
4506
4507         libzfs_fini(g_zfs);
4508         kernel_fini();
4509
4510         return (0);
4511 }