cddl/contrib/opensolaris/cmd/zdb/zdb.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
  25  */
  26
  27 #include <stdio.h>
  28 #include <unistd.h>
  29 #include <stdio_ext.h>
  30 #include <stdlib.h>
  31 #include <ctype.h>
  32 #include <sys/zfs_context.h>
  33 #include <sys/spa.h>
  34 #include <sys/spa_impl.h>
  35 #include <sys/dmu.h>
  36 #include <sys/zap.h>
  37 #include <sys/fs/zfs.h>
  38 #include <sys/zfs_znode.h>
  39 #include <sys/zfs_sa.h>
  40 #include <sys/sa.h>
  41 #include <sys/sa_impl.h>
  42 #include <sys/vdev.h>
  43 #include <sys/vdev_impl.h>
  44 #include <sys/metaslab_impl.h>
  45 #include <sys/dmu_objset.h>
  46 #include <sys/dsl_dir.h>
  47 #include <sys/dsl_dataset.h>
  48 #include <sys/dsl_pool.h>
  49 #include <sys/dbuf.h>
  50 #include <sys/zil.h>
  51 #include <sys/zil_impl.h>
  52 #include <sys/stat.h>
  53 #include <sys/resource.h>
  54 #include <sys/dmu_traverse.h>
  55 #include <sys/zio_checksum.h>
  56 #include <sys/zio_compress.h>
  57 #include <sys/zfs_fuid.h>
  58 #include <sys/arc.h>
  59 #include <sys/ddt.h>
  60 #include <sys/zfeature.h>
  61 #include <zfs_comutil.h>
  62 #undef ZFS_MAXNAMELEN
  63 #undef verify
  64 #include <libzfs.h>
  65
  66 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?        \
  67         zio_compress_table[(idx)].ci_name : "UNKNOWN")
  68 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?        \
  69         zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  70 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?     \
  71         dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?  \
  72         dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
  73 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :             \
  74         (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
  75         DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
  76
  77 #ifndef lint
  78 extern boolean_t zfs_recover;
  79 extern uint64_t zfs_arc_max, zfs_arc_meta_limit;
  80 extern int zfs_vdev_async_read_max_active;
  81 #else
  82 boolean_t zfs_recover;
  83 uint64_t zfs_arc_max, zfs_arc_meta_limit;
  84 int zfs_vdev_async_read_max_active;
  85 #endif
  86
  87 const char cmdname[] = "zdb";
  88 uint8_t dump_opt[256];
  89
  90 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  91
  92 extern void dump_intent_log(zilog_t *);
  93 uint64_t *zopt_object = NULL;
  94 int zopt_objects = 0;
  95 libzfs_handle_t *g_zfs;
  96 uint64_t max_inflight = 1000;
  97
  98 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *);
  99
 100 /*
 101  * These libumem hooks provide a reasonable set of defaults for the allocator's
 102  * debugging facilities.
 103  */
 104 const char *
 105 _umem_debug_init()
 106 {
 107         return ("default,verbose"); /* $UMEM_DEBUG setting */
 108 }
 109
 110 const char *
 111 _umem_logging_init(void)
 112 {
 113         return ("fail,contents"); /* $UMEM_LOGGING setting */
 114 }
 115
 116 static void
 117 usage(void)
 118 {
 119         (void) fprintf(stderr,
 120             "Usage: %s [-CumMdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
 121             "[-U config] [-I inflight I/Os] [-x dumpdir] poolname [object...]\n"
 122             "       %s [-divPA] [-e -p path...] [-U config] dataset "
 123             "[object...]\n"
 124             "       %s -mM [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
 125             "poolname [vdev [metaslab...]]\n"
 126             "       %s -R [-A] [-e [-p path...]] poolname "
 127             "vdev:offset:size[:flags]\n"
 128             "       %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
 129             "       %s -l [-uA] device\n"
 130             "       %s -C [-A] [-U config]\n\n",
 131             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 132
 133         (void) fprintf(stderr, "    Dataset name must include at least one "
 134             "separator character '/' or '@'\n");
 135         (void) fprintf(stderr, "    If dataset name is specified, only that "
 136             "dataset is dumped\n");
 137         (void) fprintf(stderr, "    If object numbers are specified, only "
 138             "those objects are dumped\n\n");
 139         (void) fprintf(stderr, "    Options to control amount of output:\n");
 140         (void) fprintf(stderr, "        -u uberblock\n");
 141         (void) fprintf(stderr, "        -d dataset(s)\n");
 142         (void) fprintf(stderr, "        -i intent logs\n");
 143         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 144         (void) fprintf(stderr, "        -h pool history\n");
 145         (void) fprintf(stderr, "        -b block statistics\n");
 146         (void) fprintf(stderr, "        -m metaslabs\n");
 147         (void) fprintf(stderr, "        -M metaslab groups\n");
 148         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 149             "all data) blocks\n");
 150         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 151         (void) fprintf(stderr, "        -D dedup statistics\n");
 152         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 153         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 154         (void) fprintf(stderr, "        -l dump label contents\n");
 155         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 156             "load spacemaps)\n");
 157         (void) fprintf(stderr, "        -R read and display block from a "
 158             "device\n\n");
 159         (void) fprintf(stderr, "    Below options are intended for use "
 160             "with other options:\n");
 161         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 162             "panic recovery (-AA) or both (-AAA)\n");
 163         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 164             "safe range of transaction groups\n");
 165         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 166             "cachefile\n");
 167         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 168             "work with dataset)\n");
 169         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 170             "has altroot/not in a cachefile\n");
 171         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 172             "-e to specify path to vdev dir\n");
 173         (void) fprintf(stderr, "        -x <dumpdir> -- "
 174             "dump all read blocks into specified directory\n");
 175         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 176         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 177             "searching for uberblocks\n");
 178         (void) fprintf(stderr, "        -I <number of inflight I/Os> -- "
 179             "specify the maximum number of "
 180             "checksumming I/Os [default is 200]\n");
 181         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 182             "to make only that option verbose\n");
 183         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 184         exit(1);
 185 }
 186
 187 /*
 188  * Called for usage errors that are discovered after a call to spa_open(),
 189  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 190  */
 191
 192 static void
 193 fatal(const char *fmt, ...)
 194 {
 195         va_list ap;
 196
 197         va_start(ap, fmt);
 198         (void) fprintf(stderr, "%s: ", cmdname);
 199         (void) vfprintf(stderr, fmt, ap);
 200         va_end(ap);
 201         (void) fprintf(stderr, "\n");
 202
 203         exit(1);
 204 }
 205
 206 /* ARGSUSED */
 207 static void
 208 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 209 {
 210         nvlist_t *nv;
 211         size_t nvsize = *(uint64_t *)data;
 212         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 213
 214         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 215
 216         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 217
 218         umem_free(packed, nvsize);
 219
 220         dump_nvlist(nv, 8);
 221
 222         nvlist_free(nv);
 223 }
 224
 225 /* ARGSUSED */
 226 static void
 227 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
 228 {
 229         spa_history_phys_t *shp = data;
 230
 231         if (shp == NULL)
 232                 return;
 233
 234         (void) printf("\t\tpool_create_len = %llu\n",
 235             (u_longlong_t)shp->sh_pool_create_len);
 236         (void) printf("\t\tphys_max_off = %llu\n",
 237             (u_longlong_t)shp->sh_phys_max_off);
 238         (void) printf("\t\tbof = %llu\n",
 239             (u_longlong_t)shp->sh_bof);
 240         (void) printf("\t\teof = %llu\n",
 241             (u_longlong_t)shp->sh_eof);
 242         (void) printf("\t\trecords_lost = %llu\n",
 243             (u_longlong_t)shp->sh_records_lost);
 244 }
 245
 246 static void
 247 zdb_nicenum(uint64_t num, char *buf)
 248 {
 249         if (dump_opt['P'])
 250                 (void) sprintf(buf, "%llu", (longlong_t)num);
 251         else
 252                 nicenum(num, buf);
 253 }
 254
 255 const char histo_stars[] = "****************************************";
 256 const int histo_width = sizeof (histo_stars) - 1;
 257
 258 static void
 259 dump_histogram(const uint64_t *histo, int size, int offset)
 260 {
 261         int i;
 262         int minidx = size - 1;
 263         int maxidx = 0;
 264         uint64_t max = 0;
 265
 266         for (i = 0; i < size; i++) {
 267                 if (histo[i] > max)
 268                         max = histo[i];
 269                 if (histo[i] > 0 && i > maxidx)
 270                         maxidx = i;
 271                 if (histo[i] > 0 && i < minidx)
 272                         minidx = i;
 273         }
 274
 275         if (max < histo_width)
 276                 max = histo_width;
 277
 278         for (i = minidx; i <= maxidx; i++) {
 279                 (void) printf("\t\t\t%3u: %6llu %s\n",
 280                     i + offset, (u_longlong_t)histo[i],
 281                     &histo_stars[(max - histo[i]) * histo_width / max]);
 282         }
 283 }
 284
 285 static void
 286 dump_zap_stats(objset_t *os, uint64_t object)
 287 {
 288         int error;
 289         zap_stats_t zs;
 290
 291         error = zap_get_stats(os, object, &zs);
 292         if (error)
 293                 return;
 294
 295         if (zs.zs_ptrtbl_len == 0) {
 296                 ASSERT(zs.zs_num_blocks == 1);
 297                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 298                     (u_longlong_t)zs.zs_blocksize,
 299                     (u_longlong_t)zs.zs_num_entries);
 300                 return;
 301         }
 302
 303         (void) printf("\tFat ZAP stats:\n");
 304
 305         (void) printf("\t\tPointer table:\n");
 306         (void) printf("\t\t\t%llu elements\n",
 307             (u_longlong_t)zs.zs_ptrtbl_len);
 308         (void) printf("\t\t\tzt_blk: %llu\n",
 309             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 310         (void) printf("\t\t\tzt_numblks: %llu\n",
 311             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 312         (void) printf("\t\t\tzt_shift: %llu\n",
 313             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 314         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 315             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 316         (void) printf("\t\t\tzt_nextblk: %llu\n",
 317             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 318
 319         (void) printf("\t\tZAP entries: %llu\n",
 320             (u_longlong_t)zs.zs_num_entries);
 321         (void) printf("\t\tLeaf blocks: %llu\n",
 322             (u_longlong_t)zs.zs_num_leafs);
 323         (void) printf("\t\tTotal blocks: %llu\n",
 324             (u_longlong_t)zs.zs_num_blocks);
 325         (void) printf("\t\tzap_block_type: 0x%llx\n",
 326             (u_longlong_t)zs.zs_block_type);
 327         (void) printf("\t\tzap_magic: 0x%llx\n",
 328             (u_longlong_t)zs.zs_magic);
 329         (void) printf("\t\tzap_salt: 0x%llx\n",
 330             (u_longlong_t)zs.zs_salt);
 331
 332         (void) printf("\t\tLeafs with 2^n pointers:\n");
 333         dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
 334
 335         (void) printf("\t\tBlocks with n*5 entries:\n");
 336         dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
 337
 338         (void) printf("\t\tBlocks n/10 full:\n");
 339         dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
 340
 341         (void) printf("\t\tEntries with n chunks:\n");
 342         dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
 343
 344         (void) printf("\t\tBuckets with n entries:\n");
 345         dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
 346 }
 347
 348 /*ARGSUSED*/
 349 static void
 350 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 351 {
 352 }
 353
 354 /*ARGSUSED*/
 355 static void
 356 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 357 {
 358         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 359 }
 360
 361 /*ARGSUSED*/
 362 void
 363 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 364 {
 365 }
 366
 367 /*ARGSUSED*/
 368 static void
 369 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 370 {
 371 }
 372
 373 /*ARGSUSED*/
 374 static void
 375 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 376 {
 377         zap_cursor_t zc;
 378         zap_attribute_t attr;
 379         void *prop;
 380         int i;
 381
 382         dump_zap_stats(os, object);
 383         (void) printf("\n");
 384
 385         for (zap_cursor_init(&zc, os, object);
 386             zap_cursor_retrieve(&zc, &attr) == 0;
 387             zap_cursor_advance(&zc)) {
 388                 (void) printf("\t\t%s = ", attr.za_name);
 389                 if (attr.za_num_integers == 0) {
 390                         (void) printf("\n");
 391                         continue;
 392                 }
 393                 prop = umem_zalloc(attr.za_num_integers *
 394                     attr.za_integer_length, UMEM_NOFAIL);
 395                 (void) zap_lookup(os, object, attr.za_name,
 396                     attr.za_integer_length, attr.za_num_integers, prop);
 397                 if (attr.za_integer_length == 1) {
 398                         (void) printf("%s", (char *)prop);
 399                 } else {
 400                         for (i = 0; i < attr.za_num_integers; i++) {
 401                                 switch (attr.za_integer_length) {
 402                                 case 2:
 403                                         (void) printf("%u ",
 404                                             ((uint16_t *)prop)[i]);
 405                                         break;
 406                                 case 4:
 407                                         (void) printf("%u ",
 408                                             ((uint32_t *)prop)[i]);
 409                                         break;
 410                                 case 8:
 411                                         (void) printf("%lld ",
 412                                             (u_longlong_t)((int64_t *)prop)[i]);
 413                                         break;
 414                                 }
 415                         }
 416                 }
 417                 (void) printf("\n");
 418                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 419         }
 420         zap_cursor_fini(&zc);
 421 }
 422
 423 static void
 424 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size)
 425 {
 426         bpobj_phys_t *bpop = data;
 427         char bytes[32], comp[32], uncomp[32];
 428
 429         if (bpop == NULL)
 430                 return;
 431
 432         zdb_nicenum(bpop->bpo_bytes, bytes);
 433         zdb_nicenum(bpop->bpo_comp, comp);
 434         zdb_nicenum(bpop->bpo_uncomp, uncomp);
 435
 436         (void) printf("\t\tnum_blkptrs = %llu\n",
 437             (u_longlong_t)bpop->bpo_num_blkptrs);
 438         (void) printf("\t\tbytes = %s\n", bytes);
 439         if (size >= BPOBJ_SIZE_V1) {
 440                 (void) printf("\t\tcomp = %s\n", comp);
 441                 (void) printf("\t\tuncomp = %s\n", uncomp);
 442         }
 443         if (size >= sizeof (*bpop)) {
 444                 (void) printf("\t\tsubobjs = %llu\n",
 445                     (u_longlong_t)bpop->bpo_subobjs);
 446                 (void) printf("\t\tnum_subobjs = %llu\n",
 447                     (u_longlong_t)bpop->bpo_num_subobjs);
 448         }
 449
 450         if (dump_opt['d'] < 5)
 451                 return;
 452
 453         for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) {
 454                 char blkbuf[BP_SPRINTF_LEN];
 455                 blkptr_t bp;
 456
 457                 int err = dmu_read(os, object,
 458                     i * sizeof (bp), sizeof (bp), &bp, 0);
 459                 if (err != 0) {
 460                         (void) printf("got error %u from dmu_read\n", err);
 461                         break;
 462                 }
 463                 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp);
 464                 (void) printf("\t%s\n", blkbuf);
 465         }
 466 }
 467
 468 /* ARGSUSED */
 469 static void
 470 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size)
 471 {
 472         dmu_object_info_t doi;
 473
 474         VERIFY0(dmu_object_info(os, object, &doi));
 475         uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP);
 476
 477         int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0);
 478         if (err != 0) {
 479                 (void) printf("got error %u from dmu_read\n", err);
 480                 kmem_free(subobjs, doi.doi_max_offset);
 481                 return;
 482         }
 483
 484         int64_t last_nonzero = -1;
 485         for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) {
 486                 if (subobjs[i] != 0)
 487                         last_nonzero = i;
 488         }
 489
 490         for (int64_t i = 0; i <= last_nonzero; i++) {
 491                 (void) printf("\t%llu\n", (longlong_t)subobjs[i]);
 492         }
 493         kmem_free(subobjs, doi.doi_max_offset);
 494 }
 495
 496 /*ARGSUSED*/
 497 static void
 498 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 499 {
 500         dump_zap_stats(os, object);
 501         /* contents are printed elsewhere, properly decoded */
 502 }
 503
 504 /*ARGSUSED*/
 505 static void
 506 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 507 {
 508         zap_cursor_t zc;
 509         zap_attribute_t attr;
 510
 511         dump_zap_stats(os, object);
 512         (void) printf("\n");
 513
 514         for (zap_cursor_init(&zc, os, object);
 515             zap_cursor_retrieve(&zc, &attr) == 0;
 516             zap_cursor_advance(&zc)) {
 517                 (void) printf("\t\t%s = ", attr.za_name);
 518                 if (attr.za_num_integers == 0) {
 519                         (void) printf("\n");
 520                         continue;
 521                 }
 522                 (void) printf(" %llx : [%d:%d:%d]\n",
 523                     (u_longlong_t)attr.za_first_integer,
 524                     (int)ATTR_LENGTH(attr.za_first_integer),
 525                     (int)ATTR_BSWAP(attr.za_first_integer),
 526                     (int)ATTR_NUM(attr.za_first_integer));
 527         }
 528         zap_cursor_fini(&zc);
 529 }
 530
 531 /*ARGSUSED*/
 532 static void
 533 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 534 {
 535         zap_cursor_t zc;
 536         zap_attribute_t attr;
 537         uint16_t *layout_attrs;
 538         int i;
 539
 540         dump_zap_stats(os, object);
 541         (void) printf("\n");
 542
 543         for (zap_cursor_init(&zc, os, object);
 544             zap_cursor_retrieve(&zc, &attr) == 0;
 545             zap_cursor_advance(&zc)) {
 546                 (void) printf("\t\t%s = [", attr.za_name);
 547                 if (attr.za_num_integers == 0) {
 548                         (void) printf("\n");
 549                         continue;
 550                 }
 551
 552                 VERIFY(attr.za_integer_length == 2);
 553                 layout_attrs = umem_zalloc(attr.za_num_integers *
 554                     attr.za_integer_length, UMEM_NOFAIL);
 555
 556                 VERIFY(zap_lookup(os, object, attr.za_name,
 557                     attr.za_integer_length,
 558                     attr.za_num_integers, layout_attrs) == 0);
 559
 560                 for (i = 0; i != attr.za_num_integers; i++)
 561                         (void) printf(" %d ", (int)layout_attrs[i]);
 562                 (void) printf("]\n");
 563                 umem_free(layout_attrs,
 564                     attr.za_num_integers * attr.za_integer_length);
 565         }
 566         zap_cursor_fini(&zc);
 567 }
 568
 569 /*ARGSUSED*/
 570 static void
 571 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 572 {
 573         zap_cursor_t zc;
 574         zap_attribute_t attr;
 575         const char *typenames[] = {
 576                 /* 0 */ "not specified",
 577                 /* 1 */ "FIFO",
 578                 /* 2 */ "Character Device",
 579                 /* 3 */ "3 (invalid)",
 580                 /* 4 */ "Directory",
 581                 /* 5 */ "5 (invalid)",
 582                 /* 6 */ "Block Device",
 583                 /* 7 */ "7 (invalid)",
 584                 /* 8 */ "Regular File",
 585                 /* 9 */ "9 (invalid)",
 586                 /* 10 */ "Symbolic Link",
 587                 /* 11 */ "11 (invalid)",
 588                 /* 12 */ "Socket",
 589                 /* 13 */ "Door",
 590                 /* 14 */ "Event Port",
 591                 /* 15 */ "15 (invalid)",
 592         };
 593
 594         dump_zap_stats(os, object);
 595         (void) printf("\n");
 596
 597         for (zap_cursor_init(&zc, os, object);
 598             zap_cursor_retrieve(&zc, &attr) == 0;
 599             zap_cursor_advance(&zc)) {
 600                 (void) printf("\t\t%s = %lld (type: %s)\n",
 601                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 602                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 603         }
 604         zap_cursor_fini(&zc);
 605 }
 606
 607 int
 608 get_dtl_refcount(vdev_t *vd)
 609 {
 610         int refcount = 0;
 611
 612         if (vd->vdev_ops->vdev_op_leaf) {
 613                 space_map_t *sm = vd->vdev_dtl_sm;
 614
 615                 if (sm != NULL &&
 616                     sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 617                         return (1);
 618                 return (0);
 619         }
 620
 621         for (int c = 0; c < vd->vdev_children; c++)
 622                 refcount += get_dtl_refcount(vd->vdev_child[c]);
 623         return (refcount);
 624 }
 625
 626 int
 627 get_metaslab_refcount(vdev_t *vd)
 628 {
 629         int refcount = 0;
 630
 631         if (vd->vdev_top == vd && !vd->vdev_removing) {
 632                 for (int m = 0; m < vd->vdev_ms_count; m++) {
 633                         space_map_t *sm = vd->vdev_ms[m]->ms_sm;
 634
 635                         if (sm != NULL &&
 636                             sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 637                                 refcount++;
 638                 }
 639         }
 640         for (int c = 0; c < vd->vdev_children; c++)
 641                 refcount += get_metaslab_refcount(vd->vdev_child[c]);
 642
 643         return (refcount);
 644 }
 645
 646 static int
 647 verify_spacemap_refcounts(spa_t *spa)
 648 {
 649         uint64_t expected_refcount = 0;
 650         uint64_t actual_refcount;
 651
 652         (void) feature_get_refcount(spa,
 653             &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
 654             &expected_refcount);
 655         actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
 656         actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
 657
 658         if (expected_refcount != actual_refcount) {
 659                 (void) printf("space map refcount mismatch: expected %lld != "
 660                     "actual %lld\n",
 661                     (longlong_t)expected_refcount,
 662                     (longlong_t)actual_refcount);
 663                 return (2);
 664         }
 665         return (0);
 666 }
 667
 668 static void
 669 dump_spacemap(objset_t *os, space_map_t *sm)
 670 {
 671         uint64_t alloc, offset, entry;
 672         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 673                             "INVALID", "INVALID", "INVALID", "INVALID" };
 674
 675         if (sm == NULL)
 676                 return;
 677
 678         /*
 679          * Print out the freelist entries in both encoded and decoded form.
 680          */
 681         alloc = 0;
 682         for (offset = 0; offset < space_map_length(sm);
 683             offset += sizeof (entry)) {
 684                 uint8_t mapshift = sm->sm_shift;
 685
 686                 VERIFY0(dmu_read(os, space_map_object(sm), offset,
 687                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 688                 if (SM_DEBUG_DECODE(entry)) {
 689
 690                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 691                             (u_longlong_t)(offset / sizeof (entry)),
 692                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 693                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 694                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 695                 } else {
 696                         (void) printf("\t    [%6llu]    %c  range:"
 697                             " %010llx-%010llx  size: %06llx\n",
 698                             (u_longlong_t)(offset / sizeof (entry)),
 699                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 700                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 701                             mapshift) + sm->sm_start),
 702                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 703                             mapshift) + sm->sm_start +
 704                             (SM_RUN_DECODE(entry) << mapshift)),
 705                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 706                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 707                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 708                         else
 709                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 710                 }
 711         }
 712         if (alloc != space_map_allocated(sm)) {
 713                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 714                     "with space map summary (%llu)\n",
 715                     (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
 716         }
 717 }
 718
 719 static void
 720 dump_metaslab_stats(metaslab_t *msp)
 721 {
 722         char maxbuf[32];
 723         range_tree_t *rt = msp->ms_tree;
 724         avl_tree_t *t = &msp->ms_size_tree;
 725         int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
 726
 727         zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
 728
 729         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 730             "segments", avl_numnodes(t), "maxsize", maxbuf,
 731             "freepct", free_pct);
 732         (void) printf("\tIn-memory histogram:\n");
 733         dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 734 }
 735
 736 static void
 737 dump_metaslab(metaslab_t *msp)
 738 {
 739         vdev_t *vd = msp->ms_group->mg_vd;
 740         spa_t *spa = vd->vdev_spa;
 741         space_map_t *sm = msp->ms_sm;
 742         char freebuf[32];
 743
 744         zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
 745
 746         (void) printf(
 747             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 748             (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
 749             (u_longlong_t)space_map_object(sm), freebuf);
 750
 751         if (dump_opt['m'] > 2 && !dump_opt['L']) {
 752                 mutex_enter(&msp->ms_lock);
 753                 metaslab_load_wait(msp);
 754                 if (!msp->ms_loaded) {
 755                         VERIFY0(metaslab_load(msp));
 756                         range_tree_stat_verify(msp->ms_tree);
 757                 }
 758                 dump_metaslab_stats(msp);
 759                 metaslab_unload(msp);
 760                 mutex_exit(&msp->ms_lock);
 761         }
 762
 763         if (dump_opt['m'] > 1 && sm != NULL &&
 764             spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
 765                 /*
 766                  * The space map histogram represents free space in chunks
 767                  * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
 768                  */
 769                 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
 770                     (u_longlong_t)msp->ms_fragmentation);
 771                 dump_histogram(sm->sm_phys->smp_histogram,
 772                     SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
 773         }
 774
 775         if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
 776                 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
 777
 778                 mutex_enter(&msp->ms_lock);
 779                 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
 780                 mutex_exit(&msp->ms_lock);
 781         }
 782 }
 783
 784 static void
 785 print_vdev_metaslab_header(vdev_t *vd)
 786 {
 787         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 788             (u_longlong_t)vd->vdev_id,
 789             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 790             "offset", "spacemap", "free");
 791         (void) printf("\t%15s   %19s   %15s   %10s\n",
 792             "---------------", "-------------------",
 793             "---------------", "-------------");
 794 }
 795
 796 static void
 797 dump_metaslab_groups(spa_t *spa)
 798 {
 799         vdev_t *rvd = spa->spa_root_vdev;
 800         metaslab_class_t *mc = spa_normal_class(spa);
 801         uint64_t fragmentation;
 802
 803         metaslab_class_histogram_verify(mc);
 804
 805         for (int c = 0; c < rvd->vdev_children; c++) {
 806                 vdev_t *tvd = rvd->vdev_child[c];
 807                 metaslab_group_t *mg = tvd->vdev_mg;
 808
 809                 if (mg->mg_class != mc)
 810                         continue;
 811
 812                 metaslab_group_histogram_verify(mg);
 813                 mg->mg_fragmentation = metaslab_group_fragmentation(mg);
 814
 815                 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
 816                     "fragmentation",
 817                     (u_longlong_t)tvd->vdev_id,
 818                     (u_longlong_t)tvd->vdev_ms_count);
 819                 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
 820                         (void) printf("%3s\n", "-");
 821                 } else {
 822                         (void) printf("%3llu%%\n",
 823                             (u_longlong_t)mg->mg_fragmentation);
 824                 }
 825                 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 826         }
 827
 828         (void) printf("\tpool %s\tfragmentation", spa_name(spa));
 829         fragmentation = metaslab_class_fragmentation(mc);
 830         if (fragmentation == ZFS_FRAG_INVALID)
 831                 (void) printf("\t%3s\n", "-");
 832         else
 833                 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
 834         dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 835 }
 836
 837 static void
 838 dump_metaslabs(spa_t *spa)
 839 {
 840         vdev_t *vd, *rvd = spa->spa_root_vdev;
 841         uint64_t m, c = 0, children = rvd->vdev_children;
 842
 843         (void) printf("\nMetaslabs:\n");
 844
 845         if (!dump_opt['d'] && zopt_objects > 0) {
 846                 c = zopt_object[0];
 847
 848                 if (c >= children)
 849                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 850
 851                 if (zopt_objects > 1) {
 852                         vd = rvd->vdev_child[c];
 853                         print_vdev_metaslab_header(vd);
 854
 855                         for (m = 1; m < zopt_objects; m++) {
 856                                 if (zopt_object[m] < vd->vdev_ms_count)
 857                                         dump_metaslab(
 858                                             vd->vdev_ms[zopt_object[m]]);
 859                                 else
 860                                         (void) fprintf(stderr, "bad metaslab "
 861                                             "number %llu\n",
 862                                             (u_longlong_t)zopt_object[m]);
 863                         }
 864                         (void) printf("\n");
 865                         return;
 866                 }
 867                 children = c + 1;
 868         }
 869         for (; c < children; c++) {
 870                 vd = rvd->vdev_child[c];
 871                 print_vdev_metaslab_header(vd);
 872
 873                 for (m = 0; m < vd->vdev_ms_count; m++)
 874                         dump_metaslab(vd->vdev_ms[m]);
 875                 (void) printf("\n");
 876         }
 877 }
 878
 879 static void
 880 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 881 {
 882         const ddt_phys_t *ddp = dde->dde_phys;
 883         const ddt_key_t *ddk = &dde->dde_key;
 884         char *types[4] = { "ditto", "single", "double", "triple" };
 885         char blkbuf[BP_SPRINTF_LEN];
 886         blkptr_t blk;
 887
 888         for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 889                 if (ddp->ddp_phys_birth == 0)
 890                         continue;
 891                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 892                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
 893                 (void) printf("index %llx refcnt %llu %s %s\n",
 894                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 895                     types[p], blkbuf);
 896         }
 897 }
 898
 899 static void
 900 dump_dedup_ratio(const ddt_stat_t *dds)
 901 {
 902         double rL, rP, rD, D, dedup, compress, copies;
 903
 904         if (dds->dds_blocks == 0)
 905                 return;
 906
 907         rL = (double)dds->dds_ref_lsize;
 908         rP = (double)dds->dds_ref_psize;
 909         rD = (double)dds->dds_ref_dsize;
 910         D = (double)dds->dds_dsize;
 911
 912         dedup = rD / D;
 913         compress = rL / rP;
 914         copies = rD / rP;
 915
 916         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 917             "dedup * compress / copies = %.2f\n\n",
 918             dedup, compress, copies, dedup * compress / copies);
 919 }
 920
 921 static void
 922 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 923 {
 924         char name[DDT_NAMELEN];
 925         ddt_entry_t dde;
 926         uint64_t walk = 0;
 927         dmu_object_info_t doi;
 928         uint64_t count, dspace, mspace;
 929         int error;
 930
 931         error = ddt_object_info(ddt, type, class, &doi);
 932
 933         if (error == ENOENT)
 934                 return;
 935         ASSERT(error == 0);
 936
 937         error = ddt_object_count(ddt, type, class, &count);
 938         ASSERT(error == 0);
 939         if (count == 0)
 940                 return;
 941
 942         dspace = doi.doi_physical_blocks_512 << 9;
 943         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 944
 945         ddt_object_name(ddt, type, class, name);
 946
 947         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 948             name,
 949             (u_longlong_t)count,
 950             (u_longlong_t)(dspace / count),
 951             (u_longlong_t)(mspace / count));
 952
 953         if (dump_opt['D'] < 3)
 954                 return;
 955
 956         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 957
 958         if (dump_opt['D'] < 4)
 959                 return;
 960
 961         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 962                 return;
 963
 964         (void) printf("%s contents:\n\n", name);
 965
 966         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 967                 dump_dde(ddt, &dde, walk);
 968
 969         ASSERT(error == ENOENT);
 970
 971         (void) printf("\n");
 972 }
 973
 974 static void
 975 dump_all_ddts(spa_t *spa)
 976 {
 977         ddt_histogram_t ddh_total = { 0 };
 978         ddt_stat_t dds_total = { 0 };
 979
 980         for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 981                 ddt_t *ddt = spa->spa_ddt[c];
 982                 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
 983                         for (enum ddt_class class = 0; class < DDT_CLASSES;
 984                             class++) {
 985                                 dump_ddt(ddt, type, class);
 986                         }
 987                 }
 988         }
 989
 990         ddt_get_dedup_stats(spa, &dds_total);
 991
 992         if (dds_total.dds_blocks == 0) {
 993                 (void) printf("All DDTs are empty\n");
 994                 return;
 995         }
 996
 997         (void) printf("\n");
 998
 999         if (dump_opt['D'] > 1) {
1000                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
1001                 ddt_get_dedup_histogram(spa, &ddh_total);
1002                 zpool_dump_ddt(&dds_total, &ddh_total);
1003         }
1004
1005         dump_dedup_ratio(&dds_total);
1006 }
1007
1008 static void
1009 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
1010 {
1011         char *prefix = arg;
1012
1013         (void) printf("%s [%llu,%llu) length %llu\n",
1014             prefix,
1015             (u_longlong_t)start,
1016             (u_longlong_t)(start + size),
1017             (u_longlong_t)(size));
1018 }
1019
1020 static void
1021 dump_dtl(vdev_t *vd, int indent)
1022 {
1023         spa_t *spa = vd->vdev_spa;
1024         boolean_t required;
1025         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
1026         char prefix[256];
1027
1028         spa_vdev_state_enter(spa, SCL_NONE);
1029         required = vdev_dtl_required(vd);
1030         (void) spa_vdev_state_exit(spa, NULL, 0);
1031
1032         if (indent == 0)
1033                 (void) printf("\nDirty time logs:\n\n");
1034
1035         (void) printf("\t%*s%s [%s]\n", indent, "",
1036             vd->vdev_path ? vd->vdev_path :
1037             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
1038             required ? "DTL-required" : "DTL-expendable");
1039
1040         for (int t = 0; t < DTL_TYPES; t++) {
1041                 range_tree_t *rt = vd->vdev_dtl[t];
1042                 if (range_tree_space(rt) == 0)
1043                         continue;
1044                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
1045                     indent + 2, "", name[t]);
1046                 mutex_enter(rt->rt_lock);
1047                 range_tree_walk(rt, dump_dtl_seg, prefix);
1048                 mutex_exit(rt->rt_lock);
1049                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
1050                         dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
1051         }
1052
1053         for (int c = 0; c < vd->vdev_children; c++)
1054                 dump_dtl(vd->vdev_child[c], indent + 4);
1055 }
1056
1057 /* from spa_history.c: spa_history_create_obj() */
1058 #define HIS_BUF_LEN_DEF (128 << 10)
1059 #define HIS_BUF_LEN_MAX (1 << 30)
1060
1061 static void
1062 dump_history(spa_t *spa)
1063 {
1064         nvlist_t **events = NULL;
1065         char *buf = NULL;
1066         uint64_t bufsize = HIS_BUF_LEN_DEF;
1067         uint64_t resid, len, off = 0;
1068         uint_t num = 0;
1069         int error;
1070         time_t tsec;
1071         struct tm t;
1072         char tbuf[30];
1073         char internalstr[MAXPATHLEN];
1074
1075         if ((buf = malloc(bufsize)) == NULL)
1076                 (void) fprintf(stderr, "Unable to read history: "
1077                     "out of memory\n");
1078         do {
1079                 len = bufsize;
1080
1081                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
1082                         (void) fprintf(stderr, "Unable to read history: "
1083                             "error %d\n", error);
1084                         return;
1085                 }
1086
1087                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1088                         break;
1089                 off -= resid;
1090
1091                 /*
1092                  * If the history block is too big, double the buffer
1093                  * size and try again.
1094                  */
1095                 if (resid == len) {
1096                         free(buf);
1097                         buf = NULL;
1098
1099                         bufsize <<= 1;
1100                         if ((bufsize >= HIS_BUF_LEN_MAX) ||
1101                             ((buf = malloc(bufsize)) == NULL)) {
1102                                 (void) fprintf(stderr, "Unable to read history: "
1103                                     "out of memory\n");
1104                                 return;
1105                         }
1106                 }
1107         } while (len != 0);
1108         free(buf);
1109
1110         (void) printf("\nHistory:\n");
1111         for (int i = 0; i < num; i++) {
1112                 uint64_t time, txg, ievent;
1113                 char *cmd, *intstr;
1114                 boolean_t printed = B_FALSE;
1115
1116                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
1117                     &time) != 0)
1118                         goto next;
1119                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
1120                     &cmd) != 0) {
1121                         if (nvlist_lookup_uint64(events[i],
1122                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1123                                 goto next;
1124                         verify(nvlist_lookup_uint64(events[i],
1125                             ZPOOL_HIST_TXG, &txg) == 0);
1126                         verify(nvlist_lookup_string(events[i],
1127                             ZPOOL_HIST_INT_STR, &intstr) == 0);
1128                         if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1129                                 goto next;
1130
1131                         (void) snprintf(internalstr,
1132                             sizeof (internalstr),
1133                             "[internal %s txg:%lld] %s",
1134                             zfs_history_event_names[ievent], txg,
1135                             intstr);
1136                         cmd = internalstr;
1137                 }
1138                 tsec = time;
1139                 (void) localtime_r(&tsec, &t);
1140                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1141                 (void) printf("%s %s\n", tbuf, cmd);
1142                 printed = B_TRUE;
1143
1144 next:
1145                 if (dump_opt['h'] > 1) {
1146                         if (!printed)
1147                                 (void) printf("unrecognized record:\n");
1148                         dump_nvlist(events[i], 2);
1149                 }
1150         }
1151 }
1152
1153 /*ARGSUSED*/
1154 static void
1155 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1156 {
1157 }
1158
1159 static uint64_t
1160 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1161     const zbookmark_phys_t *zb)
1162 {
1163         if (dnp == NULL) {
1164                 ASSERT(zb->zb_level < 0);
1165                 if (zb->zb_object == 0)
1166                         return (zb->zb_blkid);
1167                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1168         }
1169
1170         ASSERT(zb->zb_level >= 0);
1171
1172         return ((zb->zb_blkid <<
1173             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1174             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1175 }
1176
1177 static void
1178 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1179 {
1180         const dva_t *dva = bp->blk_dva;
1181         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1182
1183         if (dump_opt['b'] >= 6) {
1184                 snprintf_blkptr(blkbuf, buflen, bp);
1185                 return;
1186         }
1187
1188         if (BP_IS_EMBEDDED(bp)) {
1189                 (void) sprintf(blkbuf,
1190                     "EMBEDDED et=%u %llxL/%llxP B=%llu",
1191                     (int)BPE_GET_ETYPE(bp),
1192                     (u_longlong_t)BPE_GET_LSIZE(bp),
1193                     (u_longlong_t)BPE_GET_PSIZE(bp),
1194                     (u_longlong_t)bp->blk_birth);
1195                 return;
1196         }
1197
1198         blkbuf[0] = '\0';
1199         for (int i = 0; i < ndvas; i++)
1200                 (void) snprintf(blkbuf + strlen(blkbuf),
1201                     buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1202                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1203                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1204                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1205
1206         if (BP_IS_HOLE(bp)) {
1207                 (void) snprintf(blkbuf + strlen(blkbuf),
1208                     buflen - strlen(blkbuf),
1209                     "%llxL B=%llu",
1210                     (u_longlong_t)BP_GET_LSIZE(bp),
1211                     (u_longlong_t)bp->blk_birth);
1212         } else {
1213                 (void) snprintf(blkbuf + strlen(blkbuf),
1214                     buflen - strlen(blkbuf),
1215                     "%llxL/%llxP F=%llu B=%llu/%llu",
1216                     (u_longlong_t)BP_GET_LSIZE(bp),
1217                     (u_longlong_t)BP_GET_PSIZE(bp),
1218                     (u_longlong_t)BP_GET_FILL(bp),
1219                     (u_longlong_t)bp->blk_birth,
1220                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1221         }
1222 }
1223
1224 static void
1225 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1226     const dnode_phys_t *dnp)
1227 {
1228         char blkbuf[BP_SPRINTF_LEN];
1229         int l;
1230
1231         if (!BP_IS_EMBEDDED(bp)) {
1232                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1233                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1234         }
1235
1236         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1237
1238         ASSERT(zb->zb_level >= 0);
1239
1240         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1241                 if (l == zb->zb_level) {
1242                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1243                 } else {
1244                         (void) printf(" ");
1245                 }
1246         }
1247
1248         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1249         (void) printf("%s\n", blkbuf);
1250 }
1251
1252 static int
1253 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1254     blkptr_t *bp, const zbookmark_phys_t *zb)
1255 {
1256         int err = 0;
1257
1258         if (bp->blk_birth == 0)
1259                 return (0);
1260
1261         print_indirect(bp, zb, dnp);
1262
1263         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1264                 arc_flags_t flags = ARC_FLAG_WAIT;
1265                 int i;
1266                 blkptr_t *cbp;
1267                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1268                 arc_buf_t *buf;
1269                 uint64_t fill = 0;
1270
1271                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1272                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1273                 if (err)
1274                         return (err);
1275                 ASSERT(buf->b_data);
1276
1277                 /* recursively visit blocks below this */
1278                 cbp = buf->b_data;
1279                 for (i = 0; i < epb; i++, cbp++) {
1280                         zbookmark_phys_t czb;
1281
1282                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1283                             zb->zb_level - 1,
1284                             zb->zb_blkid * epb + i);
1285                         err = visit_indirect(spa, dnp, cbp, &czb);
1286                         if (err)
1287                                 break;
1288                         fill += BP_GET_FILL(cbp);
1289                 }
1290                 if (!err)
1291                         ASSERT3U(fill, ==, BP_GET_FILL(bp));
1292                 (void) arc_buf_remove_ref(buf, &buf);
1293         }
1294
1295         return (err);
1296 }
1297
1298 /*ARGSUSED*/
1299 static void
1300 dump_indirect(dnode_t *dn)
1301 {
1302         dnode_phys_t *dnp = dn->dn_phys;
1303         int j;
1304         zbookmark_phys_t czb;
1305
1306         (void) printf("Indirect blocks:\n");
1307
1308         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1309             dn->dn_object, dnp->dn_nlevels - 1, 0);
1310         for (j = 0; j < dnp->dn_nblkptr; j++) {
1311                 czb.zb_blkid = j;
1312                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1313                     &dnp->dn_blkptr[j], &czb);
1314         }
1315
1316         (void) printf("\n");
1317 }
1318
1319 /*ARGSUSED*/
1320 static void
1321 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1322 {
1323         dsl_dir_phys_t *dd = data;
1324         time_t crtime;
1325         char nice[32];
1326
1327         if (dd == NULL)
1328                 return;
1329
1330         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1331
1332         crtime = dd->dd_creation_time;
1333         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1334         (void) printf("\t\thead_dataset_obj = %llu\n",
1335             (u_longlong_t)dd->dd_head_dataset_obj);
1336         (void) printf("\t\tparent_dir_obj = %llu\n",
1337             (u_longlong_t)dd->dd_parent_obj);
1338         (void) printf("\t\torigin_obj = %llu\n",
1339             (u_longlong_t)dd->dd_origin_obj);
1340         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1341             (u_longlong_t)dd->dd_child_dir_zapobj);
1342         zdb_nicenum(dd->dd_used_bytes, nice);
1343         (void) printf("\t\tused_bytes = %s\n", nice);
1344         zdb_nicenum(dd->dd_compressed_bytes, nice);
1345         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1346         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1347         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1348         zdb_nicenum(dd->dd_quota, nice);
1349         (void) printf("\t\tquota = %s\n", nice);
1350         zdb_nicenum(dd->dd_reserved, nice);
1351         (void) printf("\t\treserved = %s\n", nice);
1352         (void) printf("\t\tprops_zapobj = %llu\n",
1353             (u_longlong_t)dd->dd_props_zapobj);
1354         (void) printf("\t\tdeleg_zapobj = %llu\n",
1355             (u_longlong_t)dd->dd_deleg_zapobj);
1356         (void) printf("\t\tflags = %llx\n",
1357             (u_longlong_t)dd->dd_flags);
1358
1359 #define DO(which) \
1360         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1361         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1362         DO(HEAD);
1363         DO(SNAP);
1364         DO(CHILD);
1365         DO(CHILD_RSRV);
1366         DO(REFRSRV);
1367 #undef DO
1368 }
1369
1370 /*ARGSUSED*/
1371 static void
1372 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1373 {
1374         dsl_dataset_phys_t *ds = data;
1375         time_t crtime;
1376         char used[32], compressed[32], uncompressed[32], unique[32];
1377         char blkbuf[BP_SPRINTF_LEN];
1378
1379         if (ds == NULL)
1380                 return;
1381
1382         ASSERT(size == sizeof (*ds));
1383         crtime = ds->ds_creation_time;
1384         zdb_nicenum(ds->ds_referenced_bytes, used);
1385         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1386         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1387         zdb_nicenum(ds->ds_unique_bytes, unique);
1388         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1389
1390         (void) printf("\t\tdir_obj = %llu\n",
1391             (u_longlong_t)ds->ds_dir_obj);
1392         (void) printf("\t\tprev_snap_obj = %llu\n",
1393             (u_longlong_t)ds->ds_prev_snap_obj);
1394         (void) printf("\t\tprev_snap_txg = %llu\n",
1395             (u_longlong_t)ds->ds_prev_snap_txg);
1396         (void) printf("\t\tnext_snap_obj = %llu\n",
1397             (u_longlong_t)ds->ds_next_snap_obj);
1398         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1399             (u_longlong_t)ds->ds_snapnames_zapobj);
1400         (void) printf("\t\tnum_children = %llu\n",
1401             (u_longlong_t)ds->ds_num_children);
1402         (void) printf("\t\tuserrefs_obj = %llu\n",
1403             (u_longlong_t)ds->ds_userrefs_obj);
1404         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1405         (void) printf("\t\tcreation_txg = %llu\n",
1406             (u_longlong_t)ds->ds_creation_txg);
1407         (void) printf("\t\tdeadlist_obj = %llu\n",
1408             (u_longlong_t)ds->ds_deadlist_obj);
1409         (void) printf("\t\tused_bytes = %s\n", used);
1410         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1411         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1412         (void) printf("\t\tunique = %s\n", unique);
1413         (void) printf("\t\tfsid_guid = %llu\n",
1414             (u_longlong_t)ds->ds_fsid_guid);
1415         (void) printf("\t\tguid = %llu\n",
1416             (u_longlong_t)ds->ds_guid);
1417         (void) printf("\t\tflags = %llx\n",
1418             (u_longlong_t)ds->ds_flags);
1419         (void) printf("\t\tnext_clones_obj = %llu\n",
1420             (u_longlong_t)ds->ds_next_clones_obj);
1421         (void) printf("\t\tprops_obj = %llu\n",
1422             (u_longlong_t)ds->ds_props_obj);
1423         (void) printf("\t\tbp = %s\n", blkbuf);
1424 }
1425
1426 /* ARGSUSED */
1427 static int
1428 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1429 {
1430         char blkbuf[BP_SPRINTF_LEN];
1431
1432         if (bp->blk_birth != 0) {
1433                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1434                 (void) printf("\t%s\n", blkbuf);
1435         }
1436         return (0);
1437 }
1438
1439 static void
1440 dump_bptree(objset_t *os, uint64_t obj, char *name)
1441 {
1442         char bytes[32];
1443         bptree_phys_t *bt;
1444         dmu_buf_t *db;
1445
1446         if (dump_opt['d'] < 3)
1447                 return;
1448
1449         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1450         bt = db->db_data;
1451         zdb_nicenum(bt->bt_bytes, bytes);
1452         (void) printf("\n    %s: %llu datasets, %s\n",
1453             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1454         dmu_buf_rele(db, FTAG);
1455
1456         if (dump_opt['d'] < 5)
1457                 return;
1458
1459         (void) printf("\n");
1460
1461         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1462 }
1463
1464 /* ARGSUSED */
1465 static int
1466 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1467 {
1468         char blkbuf[BP_SPRINTF_LEN];
1469
1470         ASSERT(bp->blk_birth != 0);
1471         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1472         (void) printf("\t%s\n", blkbuf);
1473         return (0);
1474 }
1475
1476 static void
1477 dump_full_bpobj(bpobj_t *bpo, char *name, int indent)
1478 {
1479         char bytes[32];
1480         char comp[32];
1481         char uncomp[32];
1482
1483         if (dump_opt['d'] < 3)
1484                 return;
1485
1486         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1487         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1488                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1489                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1490                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1491                     "%llu subobjs in object %llu, %s (%s/%s comp)\n",
1492                     indent * 8, name,
1493                     (u_longlong_t)bpo->bpo_object,
1494                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1495                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1496                     (u_longlong_t)bpo->bpo_phys->bpo_subobjs,
1497                     bytes, comp, uncomp);
1498
1499                 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1500                         uint64_t subobj;
1501                         bpobj_t subbpo;
1502                         int error;
1503                         VERIFY0(dmu_read(bpo->bpo_os,
1504                             bpo->bpo_phys->bpo_subobjs,
1505                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1506                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1507                         if (error != 0) {
1508                                 (void) printf("ERROR %u while trying to open "
1509                                     "subobj id %llu\n",
1510                                     error, (u_longlong_t)subobj);
1511                                 continue;
1512                         }
1513                         dump_full_bpobj(&subbpo, "subobj", indent + 1);
1514                         bpobj_close(&subbpo);
1515                 }
1516         } else {
1517                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1518                     indent * 8, name,
1519                     (u_longlong_t)bpo->bpo_object,
1520                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1521                     bytes);
1522         }
1523
1524         if (dump_opt['d'] < 5)
1525                 return;
1526
1527
1528         if (indent == 0) {
1529                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1530                 (void) printf("\n");
1531         }
1532 }
1533
1534 static void
1535 dump_deadlist(dsl_deadlist_t *dl)
1536 {
1537         dsl_deadlist_entry_t *dle;
1538         uint64_t unused;
1539         char bytes[32];
1540         char comp[32];
1541         char uncomp[32];
1542
1543         if (dump_opt['d'] < 3)
1544                 return;
1545
1546         if (dl->dl_oldfmt) {
1547                 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1548                 return;
1549         }
1550
1551         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1552         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1553         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1554         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1555             bytes, comp, uncomp);
1556
1557         if (dump_opt['d'] < 4)
1558                 return;
1559
1560         (void) printf("\n");
1561
1562         /* force the tree to be loaded */
1563         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1564
1565         for (dle = avl_first(&dl->dl_tree); dle;
1566             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1567                 if (dump_opt['d'] >= 5) {
1568                         char buf[128];
1569                         (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1570                             (longlong_t)dle->dle_mintxg,
1571                             (longlong_t)dle->dle_bpobj.bpo_object);
1572                         dump_full_bpobj(&dle->dle_bpobj, buf, 0);
1573                 } else {
1574                         (void) printf("mintxg %llu -> obj %llu\n",
1575                             (longlong_t)dle->dle_mintxg,
1576                             (longlong_t)dle->dle_bpobj.bpo_object);
1577
1578                 }
1579         }
1580 }
1581
1582 static avl_tree_t idx_tree;
1583 static avl_tree_t domain_tree;
1584 static boolean_t fuid_table_loaded;
1585 static boolean_t sa_loaded;
1586 sa_attr_type_t *sa_attr_table;
1587
1588 static void
1589 fuid_table_destroy()
1590 {
1591         if (fuid_table_loaded) {
1592                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1593                 fuid_table_loaded = B_FALSE;
1594         }
1595 }
1596
1597 /*
1598  * print uid or gid information.
1599  * For normal POSIX id just the id is printed in decimal format.
1600  * For CIFS files with FUID the fuid is printed in hex followed by
1601  * the domain-rid string.
1602  */
1603 static void
1604 print_idstr(uint64_t id, const char *id_type)
1605 {
1606         if (FUID_INDEX(id)) {
1607                 char *domain;
1608
1609                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1610                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1611                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1612         } else {
1613                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1614         }
1615
1616 }
1617
1618 static void
1619 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1620 {
1621         uint32_t uid_idx, gid_idx;
1622
1623         uid_idx = FUID_INDEX(uid);
1624         gid_idx = FUID_INDEX(gid);
1625
1626         /* Load domain table, if not already loaded */
1627         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1628                 uint64_t fuid_obj;
1629
1630                 /* first find the fuid object.  It lives in the master node */
1631                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1632                     8, 1, &fuid_obj) == 0);
1633                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1634                 (void) zfs_fuid_table_load(os, fuid_obj,
1635                     &idx_tree, &domain_tree);
1636                 fuid_table_loaded = B_TRUE;
1637         }
1638
1639         print_idstr(uid, "uid");
1640         print_idstr(gid, "gid");
1641 }
1642
1643 /*ARGSUSED*/
1644 static void
1645 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1646 {
1647         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1648         sa_handle_t *hdl;
1649         uint64_t xattr, rdev, gen;
1650         uint64_t uid, gid, mode, fsize, parent, links;
1651         uint64_t pflags;
1652         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1653         time_t z_crtime, z_atime, z_mtime, z_ctime;
1654         sa_bulk_attr_t bulk[12];
1655         int idx = 0;
1656         int error;
1657
1658         if (!sa_loaded) {
1659                 uint64_t sa_attrs = 0;
1660                 uint64_t version;
1661
1662                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1663                     8, 1, &version) == 0);
1664                 if (version >= ZPL_VERSION_SA) {
1665                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1666                             8, 1, &sa_attrs) == 0);
1667                 }
1668                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1669                     ZPL_END, &sa_attr_table)) != 0) {
1670                         (void) printf("sa_setup failed errno %d, can't "
1671                             "display znode contents\n", error);
1672                         return;
1673                 }
1674                 sa_loaded = B_TRUE;
1675         }
1676
1677         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1678                 (void) printf("Failed to get handle for SA znode\n");
1679                 return;
1680         }
1681
1682         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1683         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1684         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1685             &links, 8);
1686         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1687         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1688             &mode, 8);
1689         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1690             NULL, &parent, 8);
1691         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1692             &fsize, 8);
1693         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1694             acctm, 16);
1695         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1696             modtm, 16);
1697         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1698             crtm, 16);
1699         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1700             chgtm, 16);
1701         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1702             &pflags, 8);
1703
1704         if (sa_bulk_lookup(hdl, bulk, idx)) {
1705                 (void) sa_handle_destroy(hdl);
1706                 return;
1707         }
1708
1709         error = zfs_obj_to_path(os, object, path, sizeof (path));
1710         if (error != 0) {
1711                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1712                     (u_longlong_t)object);
1713         }
1714         if (dump_opt['d'] < 3) {
1715                 (void) printf("\t%s\n", path);
1716                 (void) sa_handle_destroy(hdl);
1717                 return;
1718         }
1719
1720         z_crtime = (time_t)crtm[0];
1721         z_atime = (time_t)acctm[0];
1722         z_mtime = (time_t)modtm[0];
1723         z_ctime = (time_t)chgtm[0];
1724
1725         (void) printf("\tpath   %s\n", path);
1726         dump_uidgid(os, uid, gid);
1727         (void) printf("\tatime  %s", ctime(&z_atime));
1728         (void) printf("\tmtime  %s", ctime(&z_mtime));
1729         (void) printf("\tctime  %s", ctime(&z_ctime));
1730         (void) printf("\tcrtime %s", ctime(&z_crtime));
1731         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1732         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1733         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1734         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1735         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1736         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1737         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1738             sizeof (uint64_t)) == 0)
1739                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1740         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1741             sizeof (uint64_t)) == 0)
1742                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1743         sa_handle_destroy(hdl);
1744 }
1745
1746 /*ARGSUSED*/
1747 static void
1748 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1749 {
1750 }
1751
1752 /*ARGSUSED*/
1753 static void
1754 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1755 {
1756 }
1757
1758 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1759         dump_none,              /* unallocated                  */
1760         dump_zap,               /* object directory             */
1761         dump_uint64,            /* object array                 */
1762         dump_none,              /* packed nvlist                */
1763         dump_packed_nvlist,     /* packed nvlist size           */
1764         dump_none,              /* bpobj                        */
1765         dump_bpobj,             /* bpobj header                 */
1766         dump_none,              /* SPA space map header         */
1767         dump_none,              /* SPA space map                */
1768         dump_none,              /* ZIL intent log               */
1769         dump_dnode,             /* DMU dnode                    */
1770         dump_dmu_objset,        /* DMU objset                   */
1771         dump_dsl_dir,           /* DSL directory                */
1772         dump_zap,               /* DSL directory child map      */
1773         dump_zap,               /* DSL dataset snap map         */
1774         dump_zap,               /* DSL props                    */
1775         dump_dsl_dataset,       /* DSL dataset                  */
1776         dump_znode,             /* ZFS znode                    */
1777         dump_acl,               /* ZFS V0 ACL                   */
1778         dump_uint8,             /* ZFS plain file               */
1779         dump_zpldir,            /* ZFS directory                */
1780         dump_zap,               /* ZFS master node              */
1781         dump_zap,               /* ZFS delete queue             */
1782         dump_uint8,             /* zvol object                  */
1783         dump_zap,               /* zvol prop                    */
1784         dump_uint8,             /* other uint8[]                */
1785         dump_uint64,            /* other uint64[]               */
1786         dump_zap,               /* other ZAP                    */
1787         dump_zap,               /* persistent error log         */
1788         dump_uint8,             /* SPA history                  */
1789         dump_history_offsets,   /* SPA history offsets          */
1790         dump_zap,               /* Pool properties              */
1791         dump_zap,               /* DSL permissions              */
1792         dump_acl,               /* ZFS ACL                      */
1793         dump_uint8,             /* ZFS SYSACL                   */
1794         dump_none,              /* FUID nvlist                  */
1795         dump_packed_nvlist,     /* FUID nvlist size             */
1796         dump_zap,               /* DSL dataset next clones      */
1797         dump_zap,               /* DSL scrub queue              */
1798         dump_zap,               /* ZFS user/group used          */
1799         dump_zap,               /* ZFS user/group quota         */
1800         dump_zap,               /* snapshot refcount tags       */
1801         dump_ddt_zap,           /* DDT ZAP object               */
1802         dump_zap,               /* DDT statistics               */
1803         dump_znode,             /* SA object                    */
1804         dump_zap,               /* SA Master Node               */
1805         dump_sa_attrs,          /* SA attribute registration    */
1806         dump_sa_layouts,        /* SA attribute layouts         */
1807         dump_zap,               /* DSL scrub translations       */
1808         dump_none,              /* fake dedup BP                */
1809         dump_zap,               /* deadlist                     */
1810         dump_none,              /* deadlist hdr                 */
1811         dump_zap,               /* dsl clones                   */
1812         dump_bpobj_subobjs,     /* bpobj subobjs                */
1813         dump_unknown,           /* Unknown type, must be last   */
1814 };
1815
1816 static void
1817 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1818 {
1819         dmu_buf_t *db = NULL;
1820         dmu_object_info_t doi;
1821         dnode_t *dn;
1822         void *bonus = NULL;
1823         size_t bsize = 0;
1824         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1825         char bonus_size[32];
1826         char aux[50];
1827         int error;
1828
1829         if (*print_header) {
1830                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1831                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1832                     "%full", "type");
1833                 *print_header = 0;
1834         }
1835
1836         if (object == 0) {
1837                 dn = DMU_META_DNODE(os);
1838         } else {
1839                 error = dmu_bonus_hold(os, object, FTAG, &db);
1840                 if (error)
1841                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1842                             object, error);
1843                 bonus = db->db_data;
1844                 bsize = db->db_size;
1845                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1846         }
1847         dmu_object_info_from_dnode(dn, &doi);
1848
1849         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1850         zdb_nicenum(doi.doi_data_block_size, dblk);
1851         zdb_nicenum(doi.doi_max_offset, lsize);
1852         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1853         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1854         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1855             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1856             doi.doi_max_offset);
1857
1858         aux[0] = '\0';
1859
1860         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1861                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1862                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1863         }
1864
1865         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1866                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1867                     ZDB_COMPRESS_NAME(doi.doi_compress));
1868         }
1869
1870         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1871             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1872             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1873
1874         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1875                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1876                     "", "", "", "", "", bonus_size, "bonus",
1877                     ZDB_OT_NAME(doi.doi_bonus_type));
1878         }
1879
1880         if (verbosity >= 4) {
1881                 (void) printf("\tdnode flags: %s%s%s\n",
1882                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1883                     "USED_BYTES " : "",
1884                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1885                     "USERUSED_ACCOUNTED " : "",
1886                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1887                     "SPILL_BLKPTR" : "");
1888                 (void) printf("\tdnode maxblkid: %llu\n",
1889                     (longlong_t)dn->dn_phys->dn_maxblkid);
1890
1891                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1892                     bonus, bsize);
1893                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1894                 *print_header = 1;
1895         }
1896
1897         if (verbosity >= 5)
1898                 dump_indirect(dn);
1899
1900         if (verbosity >= 5) {
1901                 /*
1902                  * Report the list of segments that comprise the object.
1903                  */
1904                 uint64_t start = 0;
1905                 uint64_t end;
1906                 uint64_t blkfill = 1;
1907                 int minlvl = 1;
1908
1909                 if (dn->dn_type == DMU_OT_DNODE) {
1910                         minlvl = 0;
1911                         blkfill = DNODES_PER_BLOCK;
1912                 }
1913
1914                 for (;;) {
1915                         char segsize[32];
1916                         error = dnode_next_offset(dn,
1917                             0, &start, minlvl, blkfill, 0);
1918                         if (error)
1919                                 break;
1920                         end = start;
1921                         error = dnode_next_offset(dn,
1922                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1923                         zdb_nicenum(end - start, segsize);
1924                         (void) printf("\t\tsegment [%016llx, %016llx)"
1925                             " size %5s\n", (u_longlong_t)start,
1926                             (u_longlong_t)end, segsize);
1927                         if (error)
1928                                 break;
1929                         start = end;
1930                 }
1931         }
1932
1933         if (db != NULL)
1934                 dmu_buf_rele(db, FTAG);
1935 }
1936
1937 static char *objset_types[DMU_OST_NUMTYPES] = {
1938         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1939
1940 static void
1941 dump_dir(objset_t *os)
1942 {
1943         dmu_objset_stats_t dds;
1944         uint64_t object, object_count;
1945         uint64_t refdbytes, usedobjs, scratch;
1946         char numbuf[32];
1947         char blkbuf[BP_SPRINTF_LEN + 20];
1948         char osname[MAXNAMELEN];
1949         char *type = "UNKNOWN";
1950         int verbosity = dump_opt['d'];
1951         int print_header = 1;
1952         int i, error;
1953
1954         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1955         dmu_objset_fast_stat(os, &dds);
1956         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1957
1958         if (dds.dds_type < DMU_OST_NUMTYPES)
1959                 type = objset_types[dds.dds_type];
1960
1961         if (dds.dds_type == DMU_OST_META) {
1962                 dds.dds_creation_txg = TXG_INITIAL;
1963                 usedobjs = BP_GET_FILL(os->os_rootbp);
1964                 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
1965                     dd_used_bytes;
1966         } else {
1967                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1968         }
1969
1970         ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
1971
1972         zdb_nicenum(refdbytes, numbuf);
1973
1974         if (verbosity >= 4) {
1975                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1976                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1977                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1978         } else {
1979                 blkbuf[0] = '\0';
1980         }
1981
1982         dmu_objset_name(os, osname);
1983
1984         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1985             "%s, %llu objects%s\n",
1986             osname, type, (u_longlong_t)dmu_objset_id(os),
1987             (u_longlong_t)dds.dds_creation_txg,
1988             numbuf, (u_longlong_t)usedobjs, blkbuf);
1989
1990         if (zopt_objects != 0) {
1991                 for (i = 0; i < zopt_objects; i++)
1992                         dump_object(os, zopt_object[i], verbosity,
1993                             &print_header);
1994                 (void) printf("\n");
1995                 return;
1996         }
1997
1998         if (dump_opt['i'] != 0 || verbosity >= 2)
1999                 dump_intent_log(dmu_objset_zil(os));
2000
2001         if (dmu_objset_ds(os) != NULL)
2002                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
2003
2004         if (verbosity < 2)
2005                 return;
2006
2007         if (BP_IS_HOLE(os->os_rootbp))
2008                 return;
2009
2010         dump_object(os, 0, verbosity, &print_header);
2011         object_count = 0;
2012         if (DMU_USERUSED_DNODE(os) != NULL &&
2013             DMU_USERUSED_DNODE(os)->dn_type != 0) {
2014                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
2015                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
2016         }
2017
2018         object = 0;
2019         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
2020                 dump_object(os, object, verbosity, &print_header);
2021                 object_count++;
2022         }
2023
2024         ASSERT3U(object_count, ==, usedobjs);
2025
2026         (void) printf("\n");
2027
2028         if (error != ESRCH) {
2029                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
2030                 abort();
2031         }
2032 }
2033
2034 static void
2035 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
2036 {
2037         time_t timestamp = ub->ub_timestamp;
2038
2039         (void) printf(header ? header : "");
2040         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
2041         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
2042         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
2043         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
2044         (void) printf("\ttimestamp = %llu UTC = %s",
2045             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
2046         if (dump_opt['u'] >= 3) {
2047                 char blkbuf[BP_SPRINTF_LEN];
2048                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
2049                 (void) printf("\trootbp = %s\n", blkbuf);
2050         }
2051         (void) printf(footer ? footer : "");
2052 }
2053
2054 static void
2055 dump_config(spa_t *spa)
2056 {
2057         dmu_buf_t *db;
2058         size_t nvsize = 0;
2059         int error = 0;
2060
2061
2062         error = dmu_bonus_hold(spa->spa_meta_objset,
2063             spa->spa_config_object, FTAG, &db);
2064
2065         if (error == 0) {
2066                 nvsize = *(uint64_t *)db->db_data;
2067                 dmu_buf_rele(db, FTAG);
2068
2069                 (void) printf("\nMOS Configuration:\n");
2070                 dump_packed_nvlist(spa->spa_meta_objset,
2071                     spa->spa_config_object, (void *)&nvsize, 1);
2072         } else {
2073                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
2074                     (u_longlong_t)spa->spa_config_object, error);
2075         }
2076 }
2077
2078 static void
2079 dump_cachefile(const char *cachefile)
2080 {
2081         int fd;
2082         struct stat64 statbuf;
2083         char *buf;
2084         nvlist_t *config;
2085
2086         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
2087                 (void) printf("cannot open '%s': %s\n", cachefile,
2088                     strerror(errno));
2089                 exit(1);
2090         }
2091
2092         if (fstat64(fd, &statbuf) != 0) {
2093                 (void) printf("failed to stat '%s': %s\n", cachefile,
2094                     strerror(errno));
2095                 exit(1);
2096         }
2097
2098         if ((buf = malloc(statbuf.st_size)) == NULL) {
2099                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
2100                     (u_longlong_t)statbuf.st_size);
2101                 exit(1);
2102         }
2103
2104         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2105                 (void) fprintf(stderr, "failed to read %llu bytes\n",
2106                     (u_longlong_t)statbuf.st_size);
2107                 exit(1);
2108         }
2109
2110         (void) close(fd);
2111
2112         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2113                 (void) fprintf(stderr, "failed to unpack nvlist\n");
2114                 exit(1);
2115         }
2116
2117         free(buf);
2118
2119         dump_nvlist(config, 0);
2120
2121         nvlist_free(config);
2122 }
2123
2124 #define ZDB_MAX_UB_HEADER_SIZE 32
2125
2126 static void
2127 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
2128 {
2129         vdev_t vd;
2130         vdev_t *vdp = &vd;
2131         char header[ZDB_MAX_UB_HEADER_SIZE];
2132
2133         vd.vdev_ashift = ashift;
2134         vdp->vdev_top = vdp;
2135
2136         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2137                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2138                 uberblock_t *ub = (void *)((char *)lbl + uoff);
2139
2140                 if (uberblock_verify(ub))
2141                         continue;
2142                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2143                     "Uberblock[%d]\n", i);
2144                 dump_uberblock(ub, header, "");
2145         }
2146 }
2147
2148 static void
2149 dump_label(const char *dev)
2150 {
2151         int fd;
2152         vdev_label_t label;
2153         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
2154         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2155         struct stat64 statbuf;
2156         uint64_t psize, ashift;
2157         int len = strlen(dev) + 1;
2158
2159         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
2160                 len++;
2161                 path = malloc(len);
2162                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
2163         } else {
2164                 path = strdup(dev);
2165         }
2166
2167         if ((fd = open64(path, O_RDONLY)) < 0) {
2168                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2169                 free(path);
2170                 exit(1);
2171         }
2172
2173         if (fstat64(fd, &statbuf) != 0) {
2174                 (void) printf("failed to stat '%s': %s\n", path,
2175                     strerror(errno));
2176                 free(path);
2177                 (void) close(fd);
2178                 exit(1);
2179         }
2180
2181         if (S_ISBLK(statbuf.st_mode)) {
2182                 (void) printf("cannot use '%s': character device required\n",
2183                     path);
2184                 free(path);
2185                 (void) close(fd);
2186                 exit(1);
2187         }
2188
2189         psize = statbuf.st_size;
2190         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2191
2192         for (int l = 0; l < VDEV_LABELS; l++) {
2193                 nvlist_t *config = NULL;
2194
2195                 (void) printf("--------------------------------------------\n");
2196                 (void) printf("LABEL %d\n", l);
2197                 (void) printf("--------------------------------------------\n");
2198
2199                 if (pread64(fd, &label, sizeof (label),
2200                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2201                         (void) printf("failed to read label %d\n", l);
2202                         continue;
2203                 }
2204
2205                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2206                         (void) printf("failed to unpack label %d\n", l);
2207                         ashift = SPA_MINBLOCKSHIFT;
2208                 } else {
2209                         nvlist_t *vdev_tree = NULL;
2210
2211                         dump_nvlist(config, 4);
2212                         if ((nvlist_lookup_nvlist(config,
2213                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2214                             (nvlist_lookup_uint64(vdev_tree,
2215                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2216                                 ashift = SPA_MINBLOCKSHIFT;
2217                         nvlist_free(config);
2218                 }
2219                 if (dump_opt['u'])
2220                         dump_label_uberblocks(&label, ashift);
2221         }
2222
2223         free(path);
2224         (void) close(fd);
2225 }
2226
2227 static uint64_t dataset_feature_count[SPA_FEATURES];
2228
2229 /*ARGSUSED*/
2230 static int
2231 dump_one_dir(const char *dsname, void *arg)
2232 {
2233         int error;
2234         objset_t *os;
2235
2236         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2237         if (error) {
2238                 (void) printf("Could not open %s, error %d\n", dsname, error);
2239                 return (0);
2240         }
2241
2242         for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
2243                 if (!dmu_objset_ds(os)->ds_feature_inuse[f])
2244                         continue;
2245                 ASSERT(spa_feature_table[f].fi_flags &
2246                     ZFEATURE_FLAG_PER_DATASET);
2247                 dataset_feature_count[f]++;
2248         }
2249
2250         dump_dir(os);
2251         dmu_objset_disown(os, FTAG);
2252         fuid_table_destroy();
2253         sa_loaded = B_FALSE;
2254         return (0);
2255 }
2256
2257 /*
2258  * Block statistics.
2259  */
2260 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2261 typedef struct zdb_blkstats {
2262         uint64_t zb_asize;
2263         uint64_t zb_lsize;
2264         uint64_t zb_psize;
2265         uint64_t zb_count;
2266         uint64_t zb_gangs;
2267         uint64_t zb_ditto_samevdev;
2268         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2269 } zdb_blkstats_t;
2270
2271 /*
2272  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2273  */
2274 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2275 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2276 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2277 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2278
2279 static char *zdb_ot_extname[] = {
2280         "deferred free",
2281         "dedup ditto",
2282         "other",
2283         "Total",
2284 };
2285
2286 #define ZB_TOTAL        DN_MAX_LEVELS
2287
2288 typedef struct zdb_cb {
2289         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2290         uint64_t        zcb_dedup_asize;
2291         uint64_t        zcb_dedup_blocks;
2292         uint64_t        zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2293         uint64_t        zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2294             [BPE_PAYLOAD_SIZE];
2295         uint64_t        zcb_start;
2296         uint64_t        zcb_lastprint;
2297         uint64_t        zcb_totalasize;
2298         uint64_t        zcb_errors[256];
2299         int             zcb_readfails;
2300         int             zcb_haderrors;
2301         spa_t           *zcb_spa;
2302 } zdb_cb_t;
2303
2304 static void
2305 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2306     dmu_object_type_t type)
2307 {
2308         uint64_t refcnt = 0;
2309
2310         ASSERT(type < ZDB_OT_TOTAL);
2311
2312         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2313                 return;
2314
2315         for (int i = 0; i < 4; i++) {
2316                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2317                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2318                 int equal;
2319                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2320
2321                 zb->zb_asize += BP_GET_ASIZE(bp);
2322                 zb->zb_lsize += BP_GET_LSIZE(bp);
2323                 zb->zb_psize += BP_GET_PSIZE(bp);
2324                 zb->zb_count++;
2325
2326                 /*
2327                  * The histogram is only big enough to record blocks up to
2328                  * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2329                  * "other", bucket.
2330                  */
2331                 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2332                 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2333                 zb->zb_psize_histogram[idx]++;
2334
2335                 zb->zb_gangs += BP_COUNT_GANG(bp);
2336
2337                 switch (BP_GET_NDVAS(bp)) {
2338                 case 2:
2339                         if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2340                             DVA_GET_VDEV(&bp->blk_dva[1]))
2341                                 zb->zb_ditto_samevdev++;
2342                         break;
2343                 case 3:
2344                         equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2345                             DVA_GET_VDEV(&bp->blk_dva[1])) +
2346                             (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2347                             DVA_GET_VDEV(&bp->blk_dva[2])) +
2348                             (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2349                             DVA_GET_VDEV(&bp->blk_dva[2]));
2350                         if (equal != 0)
2351                                 zb->zb_ditto_samevdev++;
2352                         break;
2353                 }
2354
2355         }
2356
2357         if (BP_IS_EMBEDDED(bp)) {
2358                 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2359                 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2360                     [BPE_GET_PSIZE(bp)]++;
2361                 return;
2362         }
2363
2364         if (dump_opt['L'])
2365                 return;
2366
2367         if (BP_GET_DEDUP(bp)) {
2368                 ddt_t *ddt;
2369                 ddt_entry_t *dde;
2370
2371                 ddt = ddt_select(zcb->zcb_spa, bp);
2372                 ddt_enter(ddt);
2373                 dde = ddt_lookup(ddt, bp, B_FALSE);
2374
2375                 if (dde == NULL) {
2376                         refcnt = 0;
2377                 } else {
2378                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2379                         ddt_phys_decref(ddp);
2380                         refcnt = ddp->ddp_refcnt;
2381                         if (ddt_phys_total_refcnt(dde) == 0)
2382                                 ddt_remove(ddt, dde);
2383                 }
2384                 ddt_exit(ddt);
2385         }
2386
2387         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2388             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2389             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2390 }
2391
2392 /* ARGSUSED */
2393 static void
2394 zdb_blkptr_done(zio_t *zio)
2395 {
2396         spa_t *spa = zio->io_spa;
2397         blkptr_t *bp = zio->io_bp;
2398         int ioerr = zio->io_error;
2399         zdb_cb_t *zcb = zio->io_private;
2400         zbookmark_phys_t *zb = &zio->io_bookmark;
2401
2402         zio_data_buf_free(zio->io_data, zio->io_size);
2403
2404         mutex_enter(&spa->spa_scrub_lock);
2405         spa->spa_scrub_inflight--;
2406         cv_broadcast(&spa->spa_scrub_io_cv);
2407
2408         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2409                 char blkbuf[BP_SPRINTF_LEN];
2410
2411                 zcb->zcb_haderrors = 1;
2412                 zcb->zcb_errors[ioerr]++;
2413
2414                 if (dump_opt['b'] >= 2)
2415                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2416                 else
2417                         blkbuf[0] = '\0';
2418
2419                 (void) printf("zdb_blkptr_cb: "
2420                     "Got error %d reading "
2421                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2422                     ioerr,
2423                     (u_longlong_t)zb->zb_objset,
2424                     (u_longlong_t)zb->zb_object,
2425                     (u_longlong_t)zb->zb_level,
2426                     (u_longlong_t)zb->zb_blkid,
2427                     blkbuf);
2428         }
2429         mutex_exit(&spa->spa_scrub_lock);
2430 }
2431
2432 /* ARGSUSED */
2433 static int
2434 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2435     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2436 {
2437         zdb_cb_t *zcb = arg;
2438         dmu_object_type_t type;
2439         boolean_t is_metadata;
2440
2441         if (bp == NULL)
2442                 return (0);
2443
2444         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2445                 char blkbuf[BP_SPRINTF_LEN];
2446                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2447                 (void) printf("objset %llu object %llu "
2448                     "level %lld offset 0x%llx %s\n",
2449                     (u_longlong_t)zb->zb_objset,
2450                     (u_longlong_t)zb->zb_object,
2451                     (longlong_t)zb->zb_level,
2452                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2453                     blkbuf);
2454         }
2455
2456         if (BP_IS_HOLE(bp))
2457                 return (0);
2458
2459         type = BP_GET_TYPE(bp);
2460
2461         zdb_count_block(zcb, zilog, bp,
2462             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2463
2464         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2465
2466         if (!BP_IS_EMBEDDED(bp) &&
2467             (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2468                 size_t size = BP_GET_PSIZE(bp);
2469                 void *data = zio_data_buf_alloc(size);
2470                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2471
2472                 /* If it's an intent log block, failure is expected. */
2473                 if (zb->zb_level == ZB_ZIL_LEVEL)
2474                         flags |= ZIO_FLAG_SPECULATIVE;
2475
2476                 mutex_enter(&spa->spa_scrub_lock);
2477                 while (spa->spa_scrub_inflight > max_inflight)
2478                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2479                 spa->spa_scrub_inflight++;
2480                 mutex_exit(&spa->spa_scrub_lock);
2481
2482                 zio_nowait(zio_read(NULL, spa, bp, data, size,
2483                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2484         }
2485
2486         zcb->zcb_readfails = 0;
2487
2488         /* only call gethrtime() every 100 blocks */
2489         static int iters;
2490         if (++iters > 100)
2491                 iters = 0;
2492         else
2493                 return (0);
2494
2495         if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2496                 uint64_t now = gethrtime();
2497                 char buf[10];
2498                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2499                 int kb_per_sec =
2500                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2501                 int sec_remaining =
2502                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2503
2504                 zfs_nicenum(bytes, buf, sizeof (buf));
2505                 (void) fprintf(stderr,
2506                     "\r%5s completed (%4dMB/s) "
2507                     "estimated time remaining: %uhr %02umin %02usec        ",
2508                     buf, kb_per_sec / 1024,
2509                     sec_remaining / 60 / 60,
2510                     sec_remaining / 60 % 60,
2511                     sec_remaining % 60);
2512
2513                 zcb->zcb_lastprint = now;
2514         }
2515
2516         return (0);
2517 }
2518
2519 static void
2520 zdb_leak(void *arg, uint64_t start, uint64_t size)
2521 {
2522         vdev_t *vd = arg;
2523
2524         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2525             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2526 }
2527
2528 static metaslab_ops_t zdb_metaslab_ops = {
2529         NULL    /* alloc */
2530 };
2531
2532 static void
2533 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2534 {
2535         ddt_bookmark_t ddb = { 0 };
2536         ddt_entry_t dde;
2537         int error;
2538
2539         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2540                 blkptr_t blk;
2541                 ddt_phys_t *ddp = dde.dde_phys;
2542
2543                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2544                         return;
2545
2546                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2547
2548                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2549                         if (ddp->ddp_phys_birth == 0)
2550                                 continue;
2551                         ddt_bp_create(ddb.ddb_checksum,
2552                             &dde.dde_key, ddp, &blk);
2553                         if (p == DDT_PHYS_DITTO) {
2554                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2555                         } else {
2556                                 zcb->zcb_dedup_asize +=
2557                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2558                                 zcb->zcb_dedup_blocks++;
2559                         }
2560                 }
2561                 if (!dump_opt['L']) {
2562                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2563                         ddt_enter(ddt);
2564                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2565                         ddt_exit(ddt);
2566                 }
2567         }
2568
2569         ASSERT(error == ENOENT);
2570 }
2571
2572 static void
2573 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2574 {
2575         zcb->zcb_spa = spa;
2576
2577         if (!dump_opt['L']) {
2578                 vdev_t *rvd = spa->spa_root_vdev;
2579                 for (uint64_t c = 0; c < rvd->vdev_children; c++) {
2580                         vdev_t *vd = rvd->vdev_child[c];
2581                         for (uint64_t m = 0; m < vd->vdev_ms_count; m++) {
2582                                 metaslab_t *msp = vd->vdev_ms[m];
2583                                 mutex_enter(&msp->ms_lock);
2584                                 metaslab_unload(msp);
2585
2586                                 /*
2587                                  * For leak detection, we overload the metaslab
2588                                  * ms_tree to contain allocated segments
2589                                  * instead of free segments. As a result,
2590                                  * we can't use the normal metaslab_load/unload
2591                                  * interfaces.
2592                                  */
2593                                 if (msp->ms_sm != NULL) {
2594                                         (void) fprintf(stderr,
2595                                             "\rloading space map for "
2596                                             "vdev %llu of %llu, "
2597                                             "metaslab %llu of %llu ...",
2598                                             (longlong_t)c,
2599                                             (longlong_t)rvd->vdev_children,
2600                                             (longlong_t)m,
2601                                             (longlong_t)vd->vdev_ms_count);
2602
2603                                         msp->ms_ops = &zdb_metaslab_ops;
2604
2605                                         /*
2606                                          * We don't want to spend the CPU
2607                                          * manipulating the size-ordered
2608                                          * tree, so clear the range_tree
2609                                          * ops.
2610                                          */
2611                                         msp->ms_tree->rt_ops = NULL;
2612                                         VERIFY0(space_map_load(msp->ms_sm,
2613                                             msp->ms_tree, SM_ALLOC));
2614                                         msp->ms_loaded = B_TRUE;
2615                                 }
2616                                 mutex_exit(&msp->ms_lock);
2617                         }
2618                 }
2619                 (void) fprintf(stderr, "\n");
2620         }
2621
2622         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2623
2624         zdb_ddt_leak_init(spa, zcb);
2625
2626         spa_config_exit(spa, SCL_CONFIG, FTAG);
2627 }
2628
2629 static void
2630 zdb_leak_fini(spa_t *spa)
2631 {
2632         if (!dump_opt['L']) {
2633                 vdev_t *rvd = spa->spa_root_vdev;
2634                 for (int c = 0; c < rvd->vdev_children; c++) {
2635                         vdev_t *vd = rvd->vdev_child[c];
2636                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2637                                 metaslab_t *msp = vd->vdev_ms[m];
2638                                 mutex_enter(&msp->ms_lock);
2639
2640                                 /*
2641                                  * The ms_tree has been overloaded to
2642                                  * contain allocated segments. Now that we
2643                                  * finished traversing all blocks, any
2644                                  * block that remains in the ms_tree
2645                                  * represents an allocated block that we
2646                                  * did not claim during the traversal.
2647                                  * Claimed blocks would have been removed
2648                                  * from the ms_tree.
2649                                  */
2650                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2651                                 msp->ms_loaded = B_FALSE;
2652
2653                                 mutex_exit(&msp->ms_lock);
2654                         }
2655                 }
2656         }
2657 }
2658
2659 /* ARGSUSED */
2660 static int
2661 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2662 {
2663         zdb_cb_t *zcb = arg;
2664
2665         if (dump_opt['b'] >= 5) {
2666                 char blkbuf[BP_SPRINTF_LEN];
2667                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2668                 (void) printf("[%s] %s\n",
2669                     "deferred free", blkbuf);
2670         }
2671         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2672         return (0);
2673 }
2674
2675 static int
2676 dump_block_stats(spa_t *spa)
2677 {
2678         zdb_cb_t zcb = { 0 };
2679         zdb_blkstats_t *zb, *tzb;
2680         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2681         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2682         boolean_t leaks = B_FALSE;
2683
2684         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2685             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2686             (dump_opt['c'] == 1) ? "metadata " : "",
2687             dump_opt['c'] ? "checksums " : "",
2688             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2689             !dump_opt['L'] ? "nothing leaked " : "");
2690
2691         /*
2692          * Load all space maps as SM_ALLOC maps, then traverse the pool
2693          * claiming each block we discover.  If the pool is perfectly
2694          * consistent, the space maps will be empty when we're done.
2695          * Anything left over is a leak; any block we can't claim (because
2696          * it's not part of any space map) is a double allocation,
2697          * reference to a freed block, or an unclaimed log block.
2698          */
2699         zdb_leak_init(spa, &zcb);
2700
2701         /*
2702          * If there's a deferred-free bplist, process that first.
2703          */
2704         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2705             count_block_cb, &zcb, NULL);
2706         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2707                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2708                     count_block_cb, &zcb, NULL);
2709         }
2710         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2711                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2712                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2713                     &zcb, NULL));
2714         }
2715
2716         if (dump_opt['c'] > 1)
2717                 flags |= TRAVERSE_PREFETCH_DATA;
2718
2719         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2720         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2721         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2722
2723         /*
2724          * If we've traversed the data blocks then we need to wait for those
2725          * I/Os to complete. We leverage "The Godfather" zio to wait on
2726          * all async I/Os to complete.
2727          */
2728         if (dump_opt['c']) {
2729                 for (int i = 0; i < max_ncpus; i++) {
2730                         (void) zio_wait(spa->spa_async_zio_root[i]);
2731                         spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
2732                             ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2733                             ZIO_FLAG_GODFATHER);
2734                 }
2735         }
2736
2737         if (zcb.zcb_haderrors) {
2738                 (void) printf("\nError counts:\n\n");
2739                 (void) printf("\t%5s  %s\n", "errno", "count");
2740                 for (int e = 0; e < 256; e++) {
2741                         if (zcb.zcb_errors[e] != 0) {
2742                                 (void) printf("\t%5d  %llu\n",
2743                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2744                         }
2745                 }
2746         }
2747
2748         /*
2749          * Report any leaked segments.
2750          */
2751         zdb_leak_fini(spa);
2752
2753         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2754
2755         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2756         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2757
2758         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2759         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2760
2761         if (total_found == total_alloc) {
2762                 if (!dump_opt['L'])
2763                         (void) printf("\n\tNo leaks (block sum matches space"
2764                             " maps exactly)\n");
2765         } else {
2766                 (void) printf("block traversal size %llu != alloc %llu "
2767                     "(%s %lld)\n",
2768                     (u_longlong_t)total_found,
2769                     (u_longlong_t)total_alloc,
2770                     (dump_opt['L']) ? "unreachable" : "leaked",
2771                     (longlong_t)(total_alloc - total_found));
2772                 leaks = B_TRUE;
2773         }
2774
2775         if (tzb->zb_count == 0)
2776                 return (2);
2777
2778         (void) printf("\n");
2779         (void) printf("\tbp count:      %10llu\n",
2780             (u_longlong_t)tzb->zb_count);
2781         (void) printf("\tganged count:  %10llu\n",
2782             (longlong_t)tzb->zb_gangs);
2783         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2784             (u_longlong_t)tzb->zb_lsize,
2785             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2786         (void) printf("\tbp physical:   %10llu      avg:"
2787             " %6llu     compression: %6.2f\n",
2788             (u_longlong_t)tzb->zb_psize,
2789             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2790             (double)tzb->zb_lsize / tzb->zb_psize);
2791         (void) printf("\tbp allocated:  %10llu      avg:"
2792             " %6llu     compression: %6.2f\n",
2793             (u_longlong_t)tzb->zb_asize,
2794             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2795             (double)tzb->zb_lsize / tzb->zb_asize);
2796         (void) printf("\tbp deduped:    %10llu    ref>1:"
2797             " %6llu   deduplication: %6.2f\n",
2798             (u_longlong_t)zcb.zcb_dedup_asize,
2799             (u_longlong_t)zcb.zcb_dedup_blocks,
2800             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2801         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2802             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2803
2804         for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2805                 if (zcb.zcb_embedded_blocks[i] == 0)
2806                         continue;
2807                 (void) printf("\n");
2808                 (void) printf("\tadditional, non-pointer bps of type %u: "
2809                     "%10llu\n",
2810                     i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2811
2812                 if (dump_opt['b'] >= 3) {
2813                         (void) printf("\t number of (compressed) bytes:  "
2814                             "number of bps\n");
2815                         dump_histogram(zcb.zcb_embedded_histogram[i],
2816                             sizeof (zcb.zcb_embedded_histogram[i]) /
2817                             sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
2818                 }
2819         }
2820
2821         if (tzb->zb_ditto_samevdev != 0) {
2822                 (void) printf("\tDittoed blocks on same vdev: %llu\n",
2823                     (longlong_t)tzb->zb_ditto_samevdev);
2824         }
2825
2826         if (dump_opt['b'] >= 2) {
2827                 int l, t, level;
2828                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2829                     "\t  avg\t comp\t%%Total\tType\n");
2830
2831                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2832                         char csize[32], lsize[32], psize[32], asize[32];
2833                         char avg[32], gang[32];
2834                         char *typename;
2835
2836                         if (t < DMU_OT_NUMTYPES)
2837                                 typename = dmu_ot[t].ot_name;
2838                         else
2839                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2840
2841                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2842                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2843                                     "\t%5s\t%5s\t%6s\t%s\n",
2844                                     "-",
2845                                     "-",
2846                                     "-",
2847                                     "-",
2848                                     "-",
2849                                     "-",
2850                                     "-",
2851                                     typename);
2852                                 continue;
2853                         }
2854
2855                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2856                                 level = (l == -1 ? ZB_TOTAL : l);
2857                                 zb = &zcb.zcb_type[level][t];
2858
2859                                 if (zb->zb_asize == 0)
2860                                         continue;
2861
2862                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2863                                         continue;
2864
2865                                 if (level == 0 && zb->zb_asize ==
2866                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2867                                         continue;
2868
2869                                 zdb_nicenum(zb->zb_count, csize);
2870                                 zdb_nicenum(zb->zb_lsize, lsize);
2871                                 zdb_nicenum(zb->zb_psize, psize);
2872                                 zdb_nicenum(zb->zb_asize, asize);
2873                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2874                                 zdb_nicenum(zb->zb_gangs, gang);
2875
2876                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2877                                     "\t%5.2f\t%6.2f\t",
2878                                     csize, lsize, psize, asize, avg,
2879                                     (double)zb->zb_lsize / zb->zb_psize,
2880                                     100.0 * zb->zb_asize / tzb->zb_asize);
2881
2882                                 if (level == ZB_TOTAL)
2883                                         (void) printf("%s\n", typename);
2884                                 else
2885                                         (void) printf("    L%d %s\n",
2886                                             level, typename);
2887
2888                                 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2889                                         (void) printf("\t number of ganged "
2890                                             "blocks: %s\n", gang);
2891                                 }
2892
2893                                 if (dump_opt['b'] >= 4) {
2894                                         (void) printf("psize "
2895                                             "(in 512-byte sectors): "
2896                                             "number of blocks\n");
2897                                         dump_histogram(zb->zb_psize_histogram,
2898                                             PSIZE_HISTO_SIZE, 0);
2899                                 }
2900                         }
2901                 }
2902         }
2903
2904         (void) printf("\n");
2905
2906         if (leaks)
2907                 return (2);
2908
2909         if (zcb.zcb_haderrors)
2910                 return (3);
2911
2912         return (0);
2913 }
2914
2915 typedef struct zdb_ddt_entry {
2916         ddt_key_t       zdde_key;
2917         uint64_t        zdde_ref_blocks;
2918         uint64_t        zdde_ref_lsize;
2919         uint64_t        zdde_ref_psize;
2920         uint64_t        zdde_ref_dsize;
2921         avl_node_t      zdde_node;
2922 } zdb_ddt_entry_t;
2923
2924 /* ARGSUSED */
2925 static int
2926 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2927     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2928 {
2929         avl_tree_t *t = arg;
2930         avl_index_t where;
2931         zdb_ddt_entry_t *zdde, zdde_search;
2932
2933         if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
2934                 return (0);
2935
2936         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2937                 (void) printf("traversing objset %llu, %llu objects, "
2938                     "%lu blocks so far\n",
2939                     (u_longlong_t)zb->zb_objset,
2940                     (u_longlong_t)BP_GET_FILL(bp),
2941                     avl_numnodes(t));
2942         }
2943
2944         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2945             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2946                 return (0);
2947
2948         ddt_key_fill(&zdde_search.zdde_key, bp);
2949
2950         zdde = avl_find(t, &zdde_search, &where);
2951
2952         if (zdde == NULL) {
2953                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2954                 zdde->zdde_key = zdde_search.zdde_key;
2955                 avl_insert(t, zdde, where);
2956         }
2957
2958         zdde->zdde_ref_blocks += 1;
2959         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2960         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2961         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2962
2963         return (0);
2964 }
2965
2966 static void
2967 dump_simulated_ddt(spa_t *spa)
2968 {
2969         avl_tree_t t;
2970         void *cookie = NULL;
2971         zdb_ddt_entry_t *zdde;
2972         ddt_histogram_t ddh_total = { 0 };
2973         ddt_stat_t dds_total = { 0 };
2974
2975         avl_create(&t, ddt_entry_compare,
2976             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2977
2978         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2979
2980         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2981             zdb_ddt_add_cb, &t);
2982
2983         spa_config_exit(spa, SCL_CONFIG, FTAG);
2984
2985         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2986                 ddt_stat_t dds;
2987                 uint64_t refcnt = zdde->zdde_ref_blocks;
2988                 ASSERT(refcnt != 0);
2989
2990                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2991                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2992                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2993                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2994
2995                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2996                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2997                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2998                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2999
3000                 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
3001                     &dds, 0);
3002
3003                 umem_free(zdde, sizeof (*zdde));
3004         }
3005
3006         avl_destroy(&t);
3007
3008         ddt_histogram_stat(&dds_total, &ddh_total);
3009
3010         (void) printf("Simulated DDT histogram:\n");
3011
3012         zpool_dump_ddt(&dds_total, &ddh_total);
3013
3014         dump_dedup_ratio(&dds_total);
3015 }
3016
3017 static void
3018 dump_zpool(spa_t *spa)
3019 {
3020         dsl_pool_t *dp = spa_get_dsl(spa);
3021         int rc = 0;
3022
3023         if (dump_opt['S']) {
3024                 dump_simulated_ddt(spa);
3025                 return;
3026         }
3027
3028         if (!dump_opt['e'] && dump_opt['C'] > 1) {
3029                 (void) printf("\nCached configuration:\n");
3030                 dump_nvlist(spa->spa_config, 8);
3031         }
3032
3033         if (dump_opt['C'])
3034                 dump_config(spa);
3035
3036         if (dump_opt['u'])
3037                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
3038
3039         if (dump_opt['D'])
3040                 dump_all_ddts(spa);
3041
3042         if (dump_opt['d'] > 2 || dump_opt['m'])
3043                 dump_metaslabs(spa);
3044         if (dump_opt['M'])
3045                 dump_metaslab_groups(spa);
3046
3047         if (dump_opt['d'] || dump_opt['i']) {
3048                 dump_dir(dp->dp_meta_objset);
3049                 if (dump_opt['d'] >= 3) {
3050                         dump_full_bpobj(&spa->spa_deferred_bpobj,
3051                             "Deferred frees", 0);
3052                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3053                                 dump_full_bpobj(
3054                                     &spa->spa_dsl_pool->dp_free_bpobj,
3055                                     "Pool snapshot frees", 0);
3056                         }
3057
3058                         if (spa_feature_is_active(spa,
3059                             SPA_FEATURE_ASYNC_DESTROY)) {
3060                                 dump_bptree(spa->spa_meta_objset,
3061                                     spa->spa_dsl_pool->dp_bptree_obj,
3062                                     "Pool dataset frees");
3063                         }
3064                         dump_dtl(spa->spa_root_vdev, 0);
3065                 }
3066                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
3067                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
3068
3069                 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
3070                         uint64_t refcount;
3071
3072                         if (!(spa_feature_table[f].fi_flags &
3073                             ZFEATURE_FLAG_PER_DATASET)) {
3074                                 ASSERT0(dataset_feature_count[f]);
3075                                 continue;
3076                         }
3077                         (void) feature_get_refcount(spa,
3078                             &spa_feature_table[f], &refcount);
3079                         if (dataset_feature_count[f] != refcount) {
3080                                 (void) printf("%s feature refcount mismatch: "
3081                                     "%lld datasets != %lld refcount\n",
3082                                     spa_feature_table[f].fi_uname,
3083                                     (longlong_t)dataset_feature_count[f],
3084                                     (longlong_t)refcount);
3085                                 rc = 2;
3086                         } else {
3087                                 (void) printf("Verified %s feature refcount "
3088                                     "of %llu is correct\n",
3089                                     spa_feature_table[f].fi_uname,
3090                                     (longlong_t)refcount);
3091                         }
3092                 }
3093         }
3094         if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
3095                 rc = dump_block_stats(spa);
3096
3097         if (rc == 0)
3098                 rc = verify_spacemap_refcounts(spa);
3099
3100         if (dump_opt['s'])
3101                 show_pool_stats(spa);
3102
3103         if (dump_opt['h'])
3104                 dump_history(spa);
3105
3106         if (rc != 0)
3107                 exit(rc);
3108 }
3109
3110 #define ZDB_FLAG_CHECKSUM       0x0001
3111 #define ZDB_FLAG_DECOMPRESS     0x0002
3112 #define ZDB_FLAG_BSWAP          0x0004
3113 #define ZDB_FLAG_GBH            0x0008
3114 #define ZDB_FLAG_INDIRECT       0x0010
3115 #define ZDB_FLAG_PHYS           0x0020
3116 #define ZDB_FLAG_RAW            0x0040
3117 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
3118
3119 int flagbits[256];
3120
3121 static void
3122 zdb_print_blkptr(blkptr_t *bp, int flags)
3123 {
3124         char blkbuf[BP_SPRINTF_LEN];
3125
3126         if (flags & ZDB_FLAG_BSWAP)
3127                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3128
3129         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3130         (void) printf("%s\n", blkbuf);
3131 }
3132
3133 static void
3134 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3135 {
3136         int i;
3137
3138         for (i = 0; i < nbps; i++)
3139                 zdb_print_blkptr(&bp[i], flags);
3140 }
3141
3142 static void
3143 zdb_dump_gbh(void *buf, int flags)
3144 {
3145         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3146 }
3147
3148 static void
3149 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3150 {
3151         if (flags & ZDB_FLAG_BSWAP)
3152                 byteswap_uint64_array(buf, size);
3153         (void) write(1, buf, size);
3154 }
3155
3156 static void
3157 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3158 {
3159         uint64_t *d = (uint64_t *)buf;
3160         int nwords = size / sizeof (uint64_t);
3161         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3162         int i, j;
3163         char *hdr, *c;
3164
3165
3166         if (do_bswap)
3167                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
3168         else
3169                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
3170
3171         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
3172
3173         for (i = 0; i < nwords; i += 2) {
3174                 (void) printf("%06llx:  %016llx  %016llx  ",
3175                     (u_longlong_t)(i * sizeof (uint64_t)),
3176                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3177                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3178
3179                 c = (char *)&d[i];
3180                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3181                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3182                 (void) printf("\n");
3183         }
3184 }
3185
3186 /*
3187  * There are two acceptable formats:
3188  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
3189  *      child[.child]*    - For example: 0.1.1
3190  *
3191  * The second form can be used to specify arbitrary vdevs anywhere
3192  * in the heirarchy.  For example, in a pool with a mirror of
3193  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3194  */
3195 static vdev_t *
3196 zdb_vdev_lookup(vdev_t *vdev, char *path)
3197 {
3198         char *s, *p, *q;
3199         int i;
3200
3201         if (vdev == NULL)
3202                 return (NULL);
3203
3204         /* First, assume the x.x.x.x format */
3205         i = (int)strtoul(path, &s, 10);
3206         if (s == path || (s && *s != '.' && *s != '\0'))
3207                 goto name;
3208         if (i < 0 || i >= vdev->vdev_children)
3209                 return (NULL);
3210
3211         vdev = vdev->vdev_child[i];
3212         if (*s == '\0')
3213                 return (vdev);
3214         return (zdb_vdev_lookup(vdev, s+1));
3215
3216 name:
3217         for (i = 0; i < vdev->vdev_children; i++) {
3218                 vdev_t *vc = vdev->vdev_child[i];
3219
3220                 if (vc->vdev_path == NULL) {
3221                         vc = zdb_vdev_lookup(vc, path);
3222                         if (vc == NULL)
3223                                 continue;
3224                         else
3225                                 return (vc);
3226                 }
3227
3228                 p = strrchr(vc->vdev_path, '/');
3229                 p = p ? p + 1 : vc->vdev_path;
3230                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3231
3232                 if (strcmp(vc->vdev_path, path) == 0)
3233                         return (vc);
3234                 if (strcmp(p, path) == 0)
3235                         return (vc);
3236                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3237                         return (vc);
3238         }
3239
3240         return (NULL);
3241 }
3242
3243 /*
3244  * Read a block from a pool and print it out.  The syntax of the
3245  * block descriptor is:
3246  *
3247  *      pool:vdev_specifier:offset:size[:flags]
3248  *
3249  *      pool           - The name of the pool you wish to read from
3250  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3251  *      offset         - offset, in hex, in bytes
3252  *      size           - Amount of data to read, in hex, in bytes
3253  *      flags          - A string of characters specifying options
3254  *               b: Decode a blkptr at given offset within block
3255  *              *c: Calculate and display checksums
3256  *               d: Decompress data before dumping
3257  *               e: Byteswap data before dumping
3258  *               g: Display data as a gang block header
3259  *               i: Display as an indirect block
3260  *               p: Do I/O to physical offset
3261  *               r: Dump raw data to stdout
3262  *
3263  *              * = not yet implemented
3264  */
3265 static void
3266 zdb_read_block(char *thing, spa_t *spa)
3267 {
3268         blkptr_t blk, *bp = &blk;
3269         dva_t *dva = bp->blk_dva;
3270         int flags = 0;
3271         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3272         zio_t *zio;
3273         vdev_t *vd;
3274         void *pbuf, *lbuf, *buf;
3275         char *s, *p, *dup, *vdev, *flagstr;
3276         int i, error;
3277
3278         dup = strdup(thing);
3279         s = strtok(dup, ":");
3280         vdev = s ? s : "";
3281         s = strtok(NULL, ":");
3282         offset = strtoull(s ? s : "", NULL, 16);
3283         s = strtok(NULL, ":");
3284         size = strtoull(s ? s : "", NULL, 16);
3285         s = strtok(NULL, ":");
3286         flagstr = s ? s : "";
3287
3288         s = NULL;
3289         if (size == 0)
3290                 s = "size must not be zero";
3291         if (!IS_P2ALIGNED(size, DEV_BSIZE))
3292                 s = "size must be a multiple of sector size";
3293         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3294                 s = "offset must be a multiple of sector size";
3295         if (s) {
3296                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3297                 free(dup);
3298                 return;
3299         }
3300
3301         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3302                 for (i = 0; flagstr[i]; i++) {
3303                         int bit = flagbits[(uchar_t)flagstr[i]];
3304
3305                         if (bit == 0) {
3306                                 (void) printf("***Invalid flag: %c\n",
3307                                     flagstr[i]);
3308                                 continue;
3309                         }
3310                         flags |= bit;
3311
3312                         /* If it's not something with an argument, keep going */
3313                         if ((bit & (ZDB_FLAG_CHECKSUM |
3314                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3315                                 continue;
3316
3317                         p = &flagstr[i + 1];
3318                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
3319                                 blkptr_offset = strtoull(p, &p, 16);
3320                         if (*p != ':' && *p != '\0') {
3321                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3322                                 free(dup);
3323                                 return;
3324                         }
3325                         i += p - &flagstr[i + 1]; /* skip over the number */
3326                 }
3327         }
3328
3329         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3330         if (vd == NULL) {
3331                 (void) printf("***Invalid vdev: %s\n", vdev);
3332                 free(dup);
3333                 return;
3334         } else {
3335                 if (vd->vdev_path)
3336                         (void) fprintf(stderr, "Found vdev: %s\n",
3337                             vd->vdev_path);
3338                 else
3339                         (void) fprintf(stderr, "Found vdev type: %s\n",
3340                             vd->vdev_ops->vdev_op_type);
3341         }
3342
3343         psize = size;
3344         lsize = size;
3345
3346         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3347         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3348
3349         BP_ZERO(bp);
3350
3351         DVA_SET_VDEV(&dva[0], vd->vdev_id);
3352         DVA_SET_OFFSET(&dva[0], offset);
3353         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3354         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3355
3356         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3357
3358         BP_SET_LSIZE(bp, lsize);
3359         BP_SET_PSIZE(bp, psize);
3360         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3361         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3362         BP_SET_TYPE(bp, DMU_OT_NONE);
3363         BP_SET_LEVEL(bp, 0);
3364         BP_SET_DEDUP(bp, 0);
3365         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3366
3367         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3368         zio = zio_root(spa, NULL, NULL, 0);
3369
3370         if (vd == vd->vdev_top) {
3371                 /*
3372                  * Treat this as a normal block read.
3373                  */
3374                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3375                     ZIO_PRIORITY_SYNC_READ,
3376                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3377         } else {
3378                 /*
3379                  * Treat this as a vdev child I/O.
3380                  */
3381                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3382                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3383                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3384                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3385                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3386         }
3387
3388         error = zio_wait(zio);
3389         spa_config_exit(spa, SCL_STATE, FTAG);
3390
3391         if (error) {
3392                 (void) printf("Read of %s failed, error: %d\n", thing, error);
3393                 goto out;
3394         }
3395
3396         if (flags & ZDB_FLAG_DECOMPRESS) {
3397                 /*
3398                  * We don't know how the data was compressed, so just try
3399                  * every decompress function at every inflated blocksize.
3400                  */
3401                 enum zio_compress c;
3402                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3403                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3404
3405                 bcopy(pbuf, pbuf2, psize);
3406
3407                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3408                     SPA_MAXBLOCKSIZE - psize) == 0);
3409
3410                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3411                     SPA_MAXBLOCKSIZE - psize) == 0);
3412
3413                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3414                     lsize -= SPA_MINBLOCKSIZE) {
3415                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3416                                 if (zio_decompress_data(c, pbuf, lbuf,
3417                                     psize, lsize) == 0 &&
3418                                     zio_decompress_data(c, pbuf2, lbuf2,
3419                                     psize, lsize) == 0 &&
3420                                     bcmp(lbuf, lbuf2, lsize) == 0)
3421                                         break;
3422                         }
3423                         if (c != ZIO_COMPRESS_FUNCTIONS)
3424                                 break;
3425                         lsize -= SPA_MINBLOCKSIZE;
3426                 }
3427
3428                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3429                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3430
3431                 if (lsize <= psize) {
3432                         (void) printf("Decompress of %s failed\n", thing);
3433                         goto out;
3434                 }
3435                 buf = lbuf;
3436                 size = lsize;
3437         } else {
3438                 buf = pbuf;
3439                 size = psize;
3440         }
3441
3442         if (flags & ZDB_FLAG_PRINT_BLKPTR)
3443                 zdb_print_blkptr((blkptr_t *)(void *)
3444                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3445         else if (flags & ZDB_FLAG_RAW)
3446                 zdb_dump_block_raw(buf, size, flags);
3447         else if (flags & ZDB_FLAG_INDIRECT)
3448                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3449                     flags);
3450         else if (flags & ZDB_FLAG_GBH)
3451                 zdb_dump_gbh(buf, flags);
3452         else
3453                 zdb_dump_block(thing, buf, size, flags);
3454
3455 out:
3456         umem_free(pbuf, SPA_MAXBLOCKSIZE);
3457         umem_free(lbuf, SPA_MAXBLOCKSIZE);
3458         free(dup);
3459 }
3460
3461 static boolean_t
3462 pool_match(nvlist_t *cfg, char *tgt)
3463 {
3464         uint64_t v, guid = strtoull(tgt, NULL, 0);
3465         char *s;
3466
3467         if (guid != 0) {
3468                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3469                         return (v == guid);
3470         } else {
3471                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3472                         return (strcmp(s, tgt) == 0);
3473         }
3474         return (B_FALSE);
3475 }
3476
3477 static char *
3478 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3479 {
3480         nvlist_t *pools;
3481         nvlist_t *match = NULL;
3482         char *name = NULL;
3483         char *sepp = NULL;
3484         char sep;
3485         int count = 0;
3486         importargs_t args = { 0 };
3487
3488         args.paths = dirc;
3489         args.path = dirv;
3490         args.can_be_active = B_TRUE;
3491
3492         if ((sepp = strpbrk(*target, "/@")) != NULL) {
3493                 sep = *sepp;
3494                 *sepp = '\0';
3495         }
3496
3497         pools = zpool_search_import(g_zfs, &args);
3498
3499         if (pools != NULL) {
3500                 nvpair_t *elem = NULL;
3501                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3502                         verify(nvpair_value_nvlist(elem, configp) == 0);
3503                         if (pool_match(*configp, *target)) {
3504                                 count++;
3505                                 if (match != NULL) {
3506                                         /* print previously found config */
3507                                         if (name != NULL) {
3508                                                 (void) printf("%s\n", name);
3509                                                 dump_nvlist(match, 8);
3510                                                 name = NULL;
3511                                         }
3512                                         (void) printf("%s\n",
3513                                             nvpair_name(elem));
3514                                         dump_nvlist(*configp, 8);
3515                                 } else {
3516                                         match = *configp;
3517                                         name = nvpair_name(elem);
3518                                 }
3519                         }
3520                 }
3521         }
3522         if (count > 1)
3523                 (void) fatal("\tMatched %d pools - use pool GUID "
3524                     "instead of pool name or \n"
3525                     "\tpool name part of a dataset name to select pool", count);
3526
3527         if (sepp)
3528                 *sepp = sep;
3529         /*
3530          * If pool GUID was specified for pool id, replace it with pool name
3531          */
3532         if (name && (strstr(*target, name) != *target)) {
3533                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3534
3535                 *target = umem_alloc(sz, UMEM_NOFAIL);
3536                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3537         }
3538
3539         *configp = name ? match : NULL;
3540
3541         return (name);
3542 }
3543
3544 int
3545 main(int argc, char **argv)
3546 {
3547         int i, c;
3548         struct rlimit rl = { 1024, 1024 };
3549         spa_t *spa = NULL;
3550         objset_t *os = NULL;
3551         int dump_all = 1;
3552         int verbose = 0;
3553         int error = 0;
3554         char **searchdirs = NULL;
3555         int nsearch = 0;
3556         char *target;
3557         nvlist_t *policy = NULL;
3558         uint64_t max_txg = UINT64_MAX;
3559         int rewind = ZPOOL_NEVER_REWIND;
3560
3561         (void) setrlimit(RLIMIT_NOFILE, &rl);
3562         (void) enable_extended_FILE_stdio(-1, -1);
3563
3564         dprintf_setup(&argc, argv);
3565
3566         while ((c = getopt(argc, argv,
3567             "bcdhilmMI:suCDRSAFLXx:evp:t:U:P")) != -1) {
3568                 switch (c) {
3569                 case 'b':
3570                 case 'c':
3571                 case 'd':
3572                 case 'h':
3573                 case 'i':
3574                 case 'l':
3575                 case 'm':
3576                 case 's':
3577                 case 'u':
3578                 case 'C':
3579                 case 'D':
3580                 case 'M':
3581                 case 'R':
3582                 case 'S':
3583                         dump_opt[c]++;
3584                         dump_all = 0;
3585                         break;
3586                 case 'A':
3587                 case 'F':
3588                 case 'L':
3589                 case 'X':
3590                 case 'e':
3591                 case 'P':
3592                         dump_opt[c]++;
3593                         break;
3594                 case 'I':
3595                         max_inflight = strtoull(optarg, NULL, 0);
3596                         if (max_inflight == 0) {
3597                                 (void) fprintf(stderr, "maximum number "
3598                                     "of inflight I/Os must be greater "
3599                                     "than 0\n");
3600                                 usage();
3601                         }
3602                         break;
3603                 case 'p':
3604                         if (searchdirs == NULL) {
3605                                 searchdirs = umem_alloc(sizeof (char *),
3606                                     UMEM_NOFAIL);
3607                         } else {
3608                                 char **tmp = umem_alloc((nsearch + 1) *
3609                                     sizeof (char *), UMEM_NOFAIL);
3610                                 bcopy(searchdirs, tmp, nsearch *
3611                                     sizeof (char *));
3612                                 umem_free(searchdirs,
3613                                     nsearch * sizeof (char *));
3614                                 searchdirs = tmp;
3615                         }
3616                         searchdirs[nsearch++] = optarg;
3617                         break;
3618                 case 't':
3619                         max_txg = strtoull(optarg, NULL, 0);
3620                         if (max_txg < TXG_INITIAL) {
3621                                 (void) fprintf(stderr, "incorrect txg "
3622                                     "specified: %s\n", optarg);
3623                                 usage();
3624                         }
3625                         break;
3626                 case 'U':
3627                         spa_config_path = optarg;
3628                         break;
3629                 case 'v':
3630                         verbose++;
3631                         break;
3632                 case 'x':
3633                         vn_dumpdir = optarg;
3634                         break;
3635                 default:
3636                         usage();
3637                         break;
3638                 }
3639         }
3640
3641         if (!dump_opt['e'] && searchdirs != NULL) {
3642                 (void) fprintf(stderr, "-p option requires use of -e\n");
3643                 usage();
3644         }
3645
3646         /*
3647          * ZDB does not typically re-read blocks; therefore limit the ARC
3648          * to 256 MB, which can be used entirely for metadata.
3649          */
3650         zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
3651
3652         /*
3653          * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
3654          * "zdb -b" uses traversal prefetch which uses async reads.
3655          * For good performance, let several of them be active at once.
3656          */
3657         zfs_vdev_async_read_max_active = 10;
3658
3659         kernel_init(FREAD);
3660         g_zfs = libzfs_init();
3661         ASSERT(g_zfs != NULL);
3662
3663         if (dump_all)
3664                 verbose = MAX(verbose, 1);
3665
3666         for (c = 0; c < 256; c++) {
3667                 if (dump_all && !strchr("elAFLRSXP", c))
3668                         dump_opt[c] = 1;
3669                 if (dump_opt[c])
3670                         dump_opt[c] += verbose;
3671         }
3672
3673         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3674         zfs_recover = (dump_opt['A'] > 1);
3675
3676         argc -= optind;
3677         argv += optind;
3678
3679         if (argc < 2 && dump_opt['R'])
3680                 usage();
3681         if (argc < 1) {
3682                 if (!dump_opt['e'] && dump_opt['C']) {
3683                         dump_cachefile(spa_config_path);
3684                         return (0);
3685                 }
3686                 usage();
3687         }
3688
3689         if (dump_opt['l']) {
3690                 dump_label(argv[0]);
3691                 return (0);
3692         }
3693
3694         if (dump_opt['X'] || dump_opt['F'])
3695                 rewind = ZPOOL_DO_REWIND |
3696                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3697
3698         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3699             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3700             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3701                 fatal("internal error: %s", strerror(ENOMEM));
3702
3703         error = 0;
3704         target = argv[0];
3705
3706         if (dump_opt['e']) {
3707                 nvlist_t *cfg = NULL;
3708                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3709
3710                 error = ENOENT;
3711                 if (name) {
3712                         if (dump_opt['C'] > 1) {
3713                                 (void) printf("\nConfiguration for import:\n");
3714                                 dump_nvlist(cfg, 8);
3715                         }
3716                         if (nvlist_add_nvlist(cfg,
3717                             ZPOOL_REWIND_POLICY, policy) != 0) {
3718                                 fatal("can't open '%s': %s",
3719                                     target, strerror(ENOMEM));
3720                         }
3721                         if ((error = spa_import(name, cfg, NULL,
3722                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3723                                 error = spa_import(name, cfg, NULL,
3724                                     ZFS_IMPORT_VERBATIM);
3725                         }
3726                 }
3727         }
3728
3729         if (error == 0) {
3730                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3731                         error = spa_open_rewind(target, &spa, FTAG, policy,
3732                             NULL);
3733                         if (error) {
3734                                 /*
3735                                  * If we're missing the log device then
3736                                  * try opening the pool after clearing the
3737                                  * log state.
3738                                  */
3739                                 mutex_enter(&spa_namespace_lock);
3740                                 if ((spa = spa_lookup(target)) != NULL &&
3741                                     spa->spa_log_state == SPA_LOG_MISSING) {
3742                                         spa->spa_log_state = SPA_LOG_CLEAR;
3743                                         error = 0;
3744                                 }
3745                                 mutex_exit(&spa_namespace_lock);
3746
3747                                 if (!error) {
3748                                         error = spa_open_rewind(target, &spa,
3749                                             FTAG, policy, NULL);
3750                                 }
3751                         }
3752                 } else {
3753                         error = dmu_objset_own(target, DMU_OST_ANY,
3754                             B_TRUE, FTAG, &os);
3755                 }
3756         }
3757         nvlist_free(policy);
3758
3759         if (error)
3760                 fatal("can't open '%s': %s", target, strerror(error));
3761
3762         argv++;
3763         argc--;
3764         if (!dump_opt['R']) {
3765                 if (argc > 0) {
3766                         zopt_objects = argc;
3767                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3768                         for (i = 0; i < zopt_objects; i++) {
3769                                 errno = 0;
3770                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3771                                 if (zopt_object[i] == 0 && errno != 0)
3772                                         fatal("bad number %s: %s",
3773                                             argv[i], strerror(errno));
3774                         }
3775                 }
3776                 if (os != NULL) {
3777                         dump_dir(os);
3778                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3779                         dump_dir(spa->spa_meta_objset);
3780                 } else {
3781                         dump_zpool(spa);
3782                 }
3783         } else {
3784                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3785                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3786                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3787                 flagbits['e'] = ZDB_FLAG_BSWAP;
3788                 flagbits['g'] = ZDB_FLAG_GBH;
3789                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3790                 flagbits['p'] = ZDB_FLAG_PHYS;
3791                 flagbits['r'] = ZDB_FLAG_RAW;
3792
3793                 for (i = 0; i < argc; i++)
3794                         zdb_read_block(argv[i], spa);
3795         }
3796
3797         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3798
3799         fuid_table_destroy();
3800         sa_loaded = B_FALSE;
3801
3802         libzfs_fini(g_zfs);
3803         kernel_fini();
3804
3805         return (0);
3806 }