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, 2014 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), "B=%llu",
1209                     (u_longlong_t)bp->blk_birth);
1210         } else {
1211                 (void) snprintf(blkbuf + strlen(blkbuf),
1212                     buflen - strlen(blkbuf),
1213                     "%llxL/%llxP F=%llu B=%llu/%llu",
1214                     (u_longlong_t)BP_GET_LSIZE(bp),
1215                     (u_longlong_t)BP_GET_PSIZE(bp),
1216                     (u_longlong_t)BP_GET_FILL(bp),
1217                     (u_longlong_t)bp->blk_birth,
1218                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1219         }
1220 }
1221
1222 static void
1223 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1224     const dnode_phys_t *dnp)
1225 {
1226         char blkbuf[BP_SPRINTF_LEN];
1227         int l;
1228
1229         if (!BP_IS_EMBEDDED(bp)) {
1230                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1231                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1232         }
1233
1234         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1235
1236         ASSERT(zb->zb_level >= 0);
1237
1238         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1239                 if (l == zb->zb_level) {
1240                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1241                 } else {
1242                         (void) printf(" ");
1243                 }
1244         }
1245
1246         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1247         (void) printf("%s\n", blkbuf);
1248 }
1249
1250 static int
1251 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1252     blkptr_t *bp, const zbookmark_phys_t *zb)
1253 {
1254         int err = 0;
1255
1256         if (bp->blk_birth == 0)
1257                 return (0);
1258
1259         print_indirect(bp, zb, dnp);
1260
1261         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1262                 arc_flags_t flags = ARC_FLAG_WAIT;
1263                 int i;
1264                 blkptr_t *cbp;
1265                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1266                 arc_buf_t *buf;
1267                 uint64_t fill = 0;
1268
1269                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1270                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1271                 if (err)
1272                         return (err);
1273                 ASSERT(buf->b_data);
1274
1275                 /* recursively visit blocks below this */
1276                 cbp = buf->b_data;
1277                 for (i = 0; i < epb; i++, cbp++) {
1278                         zbookmark_phys_t czb;
1279
1280                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1281                             zb->zb_level - 1,
1282                             zb->zb_blkid * epb + i);
1283                         err = visit_indirect(spa, dnp, cbp, &czb);
1284                         if (err)
1285                                 break;
1286                         fill += BP_GET_FILL(cbp);
1287                 }
1288                 if (!err)
1289                         ASSERT3U(fill, ==, BP_GET_FILL(bp));
1290                 (void) arc_buf_remove_ref(buf, &buf);
1291         }
1292
1293         return (err);
1294 }
1295
1296 /*ARGSUSED*/
1297 static void
1298 dump_indirect(dnode_t *dn)
1299 {
1300         dnode_phys_t *dnp = dn->dn_phys;
1301         int j;
1302         zbookmark_phys_t czb;
1303
1304         (void) printf("Indirect blocks:\n");
1305
1306         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1307             dn->dn_object, dnp->dn_nlevels - 1, 0);
1308         for (j = 0; j < dnp->dn_nblkptr; j++) {
1309                 czb.zb_blkid = j;
1310                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1311                     &dnp->dn_blkptr[j], &czb);
1312         }
1313
1314         (void) printf("\n");
1315 }
1316
1317 /*ARGSUSED*/
1318 static void
1319 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1320 {
1321         dsl_dir_phys_t *dd = data;
1322         time_t crtime;
1323         char nice[32];
1324
1325         if (dd == NULL)
1326                 return;
1327
1328         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1329
1330         crtime = dd->dd_creation_time;
1331         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1332         (void) printf("\t\thead_dataset_obj = %llu\n",
1333             (u_longlong_t)dd->dd_head_dataset_obj);
1334         (void) printf("\t\tparent_dir_obj = %llu\n",
1335             (u_longlong_t)dd->dd_parent_obj);
1336         (void) printf("\t\torigin_obj = %llu\n",
1337             (u_longlong_t)dd->dd_origin_obj);
1338         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1339             (u_longlong_t)dd->dd_child_dir_zapobj);
1340         zdb_nicenum(dd->dd_used_bytes, nice);
1341         (void) printf("\t\tused_bytes = %s\n", nice);
1342         zdb_nicenum(dd->dd_compressed_bytes, nice);
1343         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1344         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1345         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1346         zdb_nicenum(dd->dd_quota, nice);
1347         (void) printf("\t\tquota = %s\n", nice);
1348         zdb_nicenum(dd->dd_reserved, nice);
1349         (void) printf("\t\treserved = %s\n", nice);
1350         (void) printf("\t\tprops_zapobj = %llu\n",
1351             (u_longlong_t)dd->dd_props_zapobj);
1352         (void) printf("\t\tdeleg_zapobj = %llu\n",
1353             (u_longlong_t)dd->dd_deleg_zapobj);
1354         (void) printf("\t\tflags = %llx\n",
1355             (u_longlong_t)dd->dd_flags);
1356
1357 #define DO(which) \
1358         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1359         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1360         DO(HEAD);
1361         DO(SNAP);
1362         DO(CHILD);
1363         DO(CHILD_RSRV);
1364         DO(REFRSRV);
1365 #undef DO
1366 }
1367
1368 /*ARGSUSED*/
1369 static void
1370 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1371 {
1372         dsl_dataset_phys_t *ds = data;
1373         time_t crtime;
1374         char used[32], compressed[32], uncompressed[32], unique[32];
1375         char blkbuf[BP_SPRINTF_LEN];
1376
1377         if (ds == NULL)
1378                 return;
1379
1380         ASSERT(size == sizeof (*ds));
1381         crtime = ds->ds_creation_time;
1382         zdb_nicenum(ds->ds_referenced_bytes, used);
1383         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1384         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1385         zdb_nicenum(ds->ds_unique_bytes, unique);
1386         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1387
1388         (void) printf("\t\tdir_obj = %llu\n",
1389             (u_longlong_t)ds->ds_dir_obj);
1390         (void) printf("\t\tprev_snap_obj = %llu\n",
1391             (u_longlong_t)ds->ds_prev_snap_obj);
1392         (void) printf("\t\tprev_snap_txg = %llu\n",
1393             (u_longlong_t)ds->ds_prev_snap_txg);
1394         (void) printf("\t\tnext_snap_obj = %llu\n",
1395             (u_longlong_t)ds->ds_next_snap_obj);
1396         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1397             (u_longlong_t)ds->ds_snapnames_zapobj);
1398         (void) printf("\t\tnum_children = %llu\n",
1399             (u_longlong_t)ds->ds_num_children);
1400         (void) printf("\t\tuserrefs_obj = %llu\n",
1401             (u_longlong_t)ds->ds_userrefs_obj);
1402         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1403         (void) printf("\t\tcreation_txg = %llu\n",
1404             (u_longlong_t)ds->ds_creation_txg);
1405         (void) printf("\t\tdeadlist_obj = %llu\n",
1406             (u_longlong_t)ds->ds_deadlist_obj);
1407         (void) printf("\t\tused_bytes = %s\n", used);
1408         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1409         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1410         (void) printf("\t\tunique = %s\n", unique);
1411         (void) printf("\t\tfsid_guid = %llu\n",
1412             (u_longlong_t)ds->ds_fsid_guid);
1413         (void) printf("\t\tguid = %llu\n",
1414             (u_longlong_t)ds->ds_guid);
1415         (void) printf("\t\tflags = %llx\n",
1416             (u_longlong_t)ds->ds_flags);
1417         (void) printf("\t\tnext_clones_obj = %llu\n",
1418             (u_longlong_t)ds->ds_next_clones_obj);
1419         (void) printf("\t\tprops_obj = %llu\n",
1420             (u_longlong_t)ds->ds_props_obj);
1421         (void) printf("\t\tbp = %s\n", blkbuf);
1422 }
1423
1424 /* ARGSUSED */
1425 static int
1426 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1427 {
1428         char blkbuf[BP_SPRINTF_LEN];
1429
1430         if (bp->blk_birth != 0) {
1431                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1432                 (void) printf("\t%s\n", blkbuf);
1433         }
1434         return (0);
1435 }
1436
1437 static void
1438 dump_bptree(objset_t *os, uint64_t obj, char *name)
1439 {
1440         char bytes[32];
1441         bptree_phys_t *bt;
1442         dmu_buf_t *db;
1443
1444         if (dump_opt['d'] < 3)
1445                 return;
1446
1447         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1448         bt = db->db_data;
1449         zdb_nicenum(bt->bt_bytes, bytes);
1450         (void) printf("\n    %s: %llu datasets, %s\n",
1451             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1452         dmu_buf_rele(db, FTAG);
1453
1454         if (dump_opt['d'] < 5)
1455                 return;
1456
1457         (void) printf("\n");
1458
1459         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1460 }
1461
1462 /* ARGSUSED */
1463 static int
1464 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1465 {
1466         char blkbuf[BP_SPRINTF_LEN];
1467
1468         ASSERT(bp->blk_birth != 0);
1469         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1470         (void) printf("\t%s\n", blkbuf);
1471         return (0);
1472 }
1473
1474 static void
1475 dump_full_bpobj(bpobj_t *bpo, char *name, int indent)
1476 {
1477         char bytes[32];
1478         char comp[32];
1479         char uncomp[32];
1480
1481         if (dump_opt['d'] < 3)
1482                 return;
1483
1484         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1485         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1486                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1487                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1488                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1489                     "%llu subobjs in object %llu, %s (%s/%s comp)\n",
1490                     indent * 8, name,
1491                     (u_longlong_t)bpo->bpo_object,
1492                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1493                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1494                     (u_longlong_t)bpo->bpo_phys->bpo_subobjs,
1495                     bytes, comp, uncomp);
1496
1497                 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1498                         uint64_t subobj;
1499                         bpobj_t subbpo;
1500                         int error;
1501                         VERIFY0(dmu_read(bpo->bpo_os,
1502                             bpo->bpo_phys->bpo_subobjs,
1503                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1504                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1505                         if (error != 0) {
1506                                 (void) printf("ERROR %u while trying to open "
1507                                     "subobj id %llu\n",
1508                                     error, (u_longlong_t)subobj);
1509                                 continue;
1510                         }
1511                         dump_full_bpobj(&subbpo, "subobj", indent + 1);
1512                         bpobj_close(&subbpo);
1513                 }
1514         } else {
1515                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1516                     indent * 8, name,
1517                     (u_longlong_t)bpo->bpo_object,
1518                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1519                     bytes);
1520         }
1521
1522         if (dump_opt['d'] < 5)
1523                 return;
1524
1525
1526         if (indent == 0) {
1527                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1528                 (void) printf("\n");
1529         }
1530 }
1531
1532 static void
1533 dump_deadlist(dsl_deadlist_t *dl)
1534 {
1535         dsl_deadlist_entry_t *dle;
1536         uint64_t unused;
1537         char bytes[32];
1538         char comp[32];
1539         char uncomp[32];
1540
1541         if (dump_opt['d'] < 3)
1542                 return;
1543
1544         if (dl->dl_oldfmt) {
1545                 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1546                 return;
1547         }
1548
1549         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1550         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1551         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1552         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1553             bytes, comp, uncomp);
1554
1555         if (dump_opt['d'] < 4)
1556                 return;
1557
1558         (void) printf("\n");
1559
1560         /* force the tree to be loaded */
1561         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1562
1563         for (dle = avl_first(&dl->dl_tree); dle;
1564             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1565                 if (dump_opt['d'] >= 5) {
1566                         char buf[128];
1567                         (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1568                             (longlong_t)dle->dle_mintxg,
1569                             (longlong_t)dle->dle_bpobj.bpo_object);
1570                         dump_full_bpobj(&dle->dle_bpobj, buf, 0);
1571                 } else {
1572                         (void) printf("mintxg %llu -> obj %llu\n",
1573                             (longlong_t)dle->dle_mintxg,
1574                             (longlong_t)dle->dle_bpobj.bpo_object);
1575
1576                 }
1577         }
1578 }
1579
1580 static avl_tree_t idx_tree;
1581 static avl_tree_t domain_tree;
1582 static boolean_t fuid_table_loaded;
1583 static boolean_t sa_loaded;
1584 sa_attr_type_t *sa_attr_table;
1585
1586 static void
1587 fuid_table_destroy()
1588 {
1589         if (fuid_table_loaded) {
1590                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1591                 fuid_table_loaded = B_FALSE;
1592         }
1593 }
1594
1595 /*
1596  * print uid or gid information.
1597  * For normal POSIX id just the id is printed in decimal format.
1598  * For CIFS files with FUID the fuid is printed in hex followed by
1599  * the domain-rid string.
1600  */
1601 static void
1602 print_idstr(uint64_t id, const char *id_type)
1603 {
1604         if (FUID_INDEX(id)) {
1605                 char *domain;
1606
1607                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1608                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1609                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1610         } else {
1611                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1612         }
1613
1614 }
1615
1616 static void
1617 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1618 {
1619         uint32_t uid_idx, gid_idx;
1620
1621         uid_idx = FUID_INDEX(uid);
1622         gid_idx = FUID_INDEX(gid);
1623
1624         /* Load domain table, if not already loaded */
1625         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1626                 uint64_t fuid_obj;
1627
1628                 /* first find the fuid object.  It lives in the master node */
1629                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1630                     8, 1, &fuid_obj) == 0);
1631                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1632                 (void) zfs_fuid_table_load(os, fuid_obj,
1633                     &idx_tree, &domain_tree);
1634                 fuid_table_loaded = B_TRUE;
1635         }
1636
1637         print_idstr(uid, "uid");
1638         print_idstr(gid, "gid");
1639 }
1640
1641 /*ARGSUSED*/
1642 static void
1643 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1644 {
1645         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1646         sa_handle_t *hdl;
1647         uint64_t xattr, rdev, gen;
1648         uint64_t uid, gid, mode, fsize, parent, links;
1649         uint64_t pflags;
1650         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1651         time_t z_crtime, z_atime, z_mtime, z_ctime;
1652         sa_bulk_attr_t bulk[12];
1653         int idx = 0;
1654         int error;
1655
1656         if (!sa_loaded) {
1657                 uint64_t sa_attrs = 0;
1658                 uint64_t version;
1659
1660                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1661                     8, 1, &version) == 0);
1662                 if (version >= ZPL_VERSION_SA) {
1663                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1664                             8, 1, &sa_attrs) == 0);
1665                 }
1666                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1667                     ZPL_END, &sa_attr_table)) != 0) {
1668                         (void) printf("sa_setup failed errno %d, can't "
1669                             "display znode contents\n", error);
1670                         return;
1671                 }
1672                 sa_loaded = B_TRUE;
1673         }
1674
1675         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1676                 (void) printf("Failed to get handle for SA znode\n");
1677                 return;
1678         }
1679
1680         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1681         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1682         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1683             &links, 8);
1684         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1685         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1686             &mode, 8);
1687         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1688             NULL, &parent, 8);
1689         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1690             &fsize, 8);
1691         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1692             acctm, 16);
1693         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1694             modtm, 16);
1695         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1696             crtm, 16);
1697         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1698             chgtm, 16);
1699         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1700             &pflags, 8);
1701
1702         if (sa_bulk_lookup(hdl, bulk, idx)) {
1703                 (void) sa_handle_destroy(hdl);
1704                 return;
1705         }
1706
1707         error = zfs_obj_to_path(os, object, path, sizeof (path));
1708         if (error != 0) {
1709                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1710                     (u_longlong_t)object);
1711         }
1712         if (dump_opt['d'] < 3) {
1713                 (void) printf("\t%s\n", path);
1714                 (void) sa_handle_destroy(hdl);
1715                 return;
1716         }
1717
1718         z_crtime = (time_t)crtm[0];
1719         z_atime = (time_t)acctm[0];
1720         z_mtime = (time_t)modtm[0];
1721         z_ctime = (time_t)chgtm[0];
1722
1723         (void) printf("\tpath   %s\n", path);
1724         dump_uidgid(os, uid, gid);
1725         (void) printf("\tatime  %s", ctime(&z_atime));
1726         (void) printf("\tmtime  %s", ctime(&z_mtime));
1727         (void) printf("\tctime  %s", ctime(&z_ctime));
1728         (void) printf("\tcrtime %s", ctime(&z_crtime));
1729         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1730         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1731         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1732         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1733         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1734         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1735         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1736             sizeof (uint64_t)) == 0)
1737                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1738         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1739             sizeof (uint64_t)) == 0)
1740                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1741         sa_handle_destroy(hdl);
1742 }
1743
1744 /*ARGSUSED*/
1745 static void
1746 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1747 {
1748 }
1749
1750 /*ARGSUSED*/
1751 static void
1752 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1753 {
1754 }
1755
1756 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1757         dump_none,              /* unallocated                  */
1758         dump_zap,               /* object directory             */
1759         dump_uint64,            /* object array                 */
1760         dump_none,              /* packed nvlist                */
1761         dump_packed_nvlist,     /* packed nvlist size           */
1762         dump_none,              /* bpobj                        */
1763         dump_bpobj,             /* bpobj header                 */
1764         dump_none,              /* SPA space map header         */
1765         dump_none,              /* SPA space map                */
1766         dump_none,              /* ZIL intent log               */
1767         dump_dnode,             /* DMU dnode                    */
1768         dump_dmu_objset,        /* DMU objset                   */
1769         dump_dsl_dir,           /* DSL directory                */
1770         dump_zap,               /* DSL directory child map      */
1771         dump_zap,               /* DSL dataset snap map         */
1772         dump_zap,               /* DSL props                    */
1773         dump_dsl_dataset,       /* DSL dataset                  */
1774         dump_znode,             /* ZFS znode                    */
1775         dump_acl,               /* ZFS V0 ACL                   */
1776         dump_uint8,             /* ZFS plain file               */
1777         dump_zpldir,            /* ZFS directory                */
1778         dump_zap,               /* ZFS master node              */
1779         dump_zap,               /* ZFS delete queue             */
1780         dump_uint8,             /* zvol object                  */
1781         dump_zap,               /* zvol prop                    */
1782         dump_uint8,             /* other uint8[]                */
1783         dump_uint64,            /* other uint64[]               */
1784         dump_zap,               /* other ZAP                    */
1785         dump_zap,               /* persistent error log         */
1786         dump_uint8,             /* SPA history                  */
1787         dump_history_offsets,   /* SPA history offsets          */
1788         dump_zap,               /* Pool properties              */
1789         dump_zap,               /* DSL permissions              */
1790         dump_acl,               /* ZFS ACL                      */
1791         dump_uint8,             /* ZFS SYSACL                   */
1792         dump_none,              /* FUID nvlist                  */
1793         dump_packed_nvlist,     /* FUID nvlist size             */
1794         dump_zap,               /* DSL dataset next clones      */
1795         dump_zap,               /* DSL scrub queue              */
1796         dump_zap,               /* ZFS user/group used          */
1797         dump_zap,               /* ZFS user/group quota         */
1798         dump_zap,               /* snapshot refcount tags       */
1799         dump_ddt_zap,           /* DDT ZAP object               */
1800         dump_zap,               /* DDT statistics               */
1801         dump_znode,             /* SA object                    */
1802         dump_zap,               /* SA Master Node               */
1803         dump_sa_attrs,          /* SA attribute registration    */
1804         dump_sa_layouts,        /* SA attribute layouts         */
1805         dump_zap,               /* DSL scrub translations       */
1806         dump_none,              /* fake dedup BP                */
1807         dump_zap,               /* deadlist                     */
1808         dump_none,              /* deadlist hdr                 */
1809         dump_zap,               /* dsl clones                   */
1810         dump_bpobj_subobjs,     /* bpobj subobjs                */
1811         dump_unknown,           /* Unknown type, must be last   */
1812 };
1813
1814 static void
1815 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1816 {
1817         dmu_buf_t *db = NULL;
1818         dmu_object_info_t doi;
1819         dnode_t *dn;
1820         void *bonus = NULL;
1821         size_t bsize = 0;
1822         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1823         char bonus_size[32];
1824         char aux[50];
1825         int error;
1826
1827         if (*print_header) {
1828                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1829                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1830                     "%full", "type");
1831                 *print_header = 0;
1832         }
1833
1834         if (object == 0) {
1835                 dn = DMU_META_DNODE(os);
1836         } else {
1837                 error = dmu_bonus_hold(os, object, FTAG, &db);
1838                 if (error)
1839                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1840                             object, error);
1841                 bonus = db->db_data;
1842                 bsize = db->db_size;
1843                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1844         }
1845         dmu_object_info_from_dnode(dn, &doi);
1846
1847         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1848         zdb_nicenum(doi.doi_data_block_size, dblk);
1849         zdb_nicenum(doi.doi_max_offset, lsize);
1850         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1851         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1852         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1853             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1854             doi.doi_max_offset);
1855
1856         aux[0] = '\0';
1857
1858         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1859                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1860                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1861         }
1862
1863         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1864                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1865                     ZDB_COMPRESS_NAME(doi.doi_compress));
1866         }
1867
1868         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1869             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1870             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1871
1872         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1873                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1874                     "", "", "", "", "", bonus_size, "bonus",
1875                     ZDB_OT_NAME(doi.doi_bonus_type));
1876         }
1877
1878         if (verbosity >= 4) {
1879                 (void) printf("\tdnode flags: %s%s%s\n",
1880                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1881                     "USED_BYTES " : "",
1882                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1883                     "USERUSED_ACCOUNTED " : "",
1884                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1885                     "SPILL_BLKPTR" : "");
1886                 (void) printf("\tdnode maxblkid: %llu\n",
1887                     (longlong_t)dn->dn_phys->dn_maxblkid);
1888
1889                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1890                     bonus, bsize);
1891                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1892                 *print_header = 1;
1893         }
1894
1895         if (verbosity >= 5)
1896                 dump_indirect(dn);
1897
1898         if (verbosity >= 5) {
1899                 /*
1900                  * Report the list of segments that comprise the object.
1901                  */
1902                 uint64_t start = 0;
1903                 uint64_t end;
1904                 uint64_t blkfill = 1;
1905                 int minlvl = 1;
1906
1907                 if (dn->dn_type == DMU_OT_DNODE) {
1908                         minlvl = 0;
1909                         blkfill = DNODES_PER_BLOCK;
1910                 }
1911
1912                 for (;;) {
1913                         char segsize[32];
1914                         error = dnode_next_offset(dn,
1915                             0, &start, minlvl, blkfill, 0);
1916                         if (error)
1917                                 break;
1918                         end = start;
1919                         error = dnode_next_offset(dn,
1920                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1921                         zdb_nicenum(end - start, segsize);
1922                         (void) printf("\t\tsegment [%016llx, %016llx)"
1923                             " size %5s\n", (u_longlong_t)start,
1924                             (u_longlong_t)end, segsize);
1925                         if (error)
1926                                 break;
1927                         start = end;
1928                 }
1929         }
1930
1931         if (db != NULL)
1932                 dmu_buf_rele(db, FTAG);
1933 }
1934
1935 static char *objset_types[DMU_OST_NUMTYPES] = {
1936         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1937
1938 static void
1939 dump_dir(objset_t *os)
1940 {
1941         dmu_objset_stats_t dds;
1942         uint64_t object, object_count;
1943         uint64_t refdbytes, usedobjs, scratch;
1944         char numbuf[32];
1945         char blkbuf[BP_SPRINTF_LEN + 20];
1946         char osname[MAXNAMELEN];
1947         char *type = "UNKNOWN";
1948         int verbosity = dump_opt['d'];
1949         int print_header = 1;
1950         int i, error;
1951
1952         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1953         dmu_objset_fast_stat(os, &dds);
1954         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1955
1956         if (dds.dds_type < DMU_OST_NUMTYPES)
1957                 type = objset_types[dds.dds_type];
1958
1959         if (dds.dds_type == DMU_OST_META) {
1960                 dds.dds_creation_txg = TXG_INITIAL;
1961                 usedobjs = BP_GET_FILL(os->os_rootbp);
1962                 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
1963                     dd_used_bytes;
1964         } else {
1965                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1966         }
1967
1968         ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
1969
1970         zdb_nicenum(refdbytes, numbuf);
1971
1972         if (verbosity >= 4) {
1973                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1974                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1975                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1976         } else {
1977                 blkbuf[0] = '\0';
1978         }
1979
1980         dmu_objset_name(os, osname);
1981
1982         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1983             "%s, %llu objects%s\n",
1984             osname, type, (u_longlong_t)dmu_objset_id(os),
1985             (u_longlong_t)dds.dds_creation_txg,
1986             numbuf, (u_longlong_t)usedobjs, blkbuf);
1987
1988         if (zopt_objects != 0) {
1989                 for (i = 0; i < zopt_objects; i++)
1990                         dump_object(os, zopt_object[i], verbosity,
1991                             &print_header);
1992                 (void) printf("\n");
1993                 return;
1994         }
1995
1996         if (dump_opt['i'] != 0 || verbosity >= 2)
1997                 dump_intent_log(dmu_objset_zil(os));
1998
1999         if (dmu_objset_ds(os) != NULL)
2000                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
2001
2002         if (verbosity < 2)
2003                 return;
2004
2005         if (BP_IS_HOLE(os->os_rootbp))
2006                 return;
2007
2008         dump_object(os, 0, verbosity, &print_header);
2009         object_count = 0;
2010         if (DMU_USERUSED_DNODE(os) != NULL &&
2011             DMU_USERUSED_DNODE(os)->dn_type != 0) {
2012                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
2013                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
2014         }
2015
2016         object = 0;
2017         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
2018                 dump_object(os, object, verbosity, &print_header);
2019                 object_count++;
2020         }
2021
2022         ASSERT3U(object_count, ==, usedobjs);
2023
2024         (void) printf("\n");
2025
2026         if (error != ESRCH) {
2027                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
2028                 abort();
2029         }
2030 }
2031
2032 static void
2033 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
2034 {
2035         time_t timestamp = ub->ub_timestamp;
2036
2037         (void) printf(header ? header : "");
2038         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
2039         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
2040         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
2041         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
2042         (void) printf("\ttimestamp = %llu UTC = %s",
2043             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
2044         if (dump_opt['u'] >= 3) {
2045                 char blkbuf[BP_SPRINTF_LEN];
2046                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
2047                 (void) printf("\trootbp = %s\n", blkbuf);
2048         }
2049         (void) printf(footer ? footer : "");
2050 }
2051
2052 static void
2053 dump_config(spa_t *spa)
2054 {
2055         dmu_buf_t *db;
2056         size_t nvsize = 0;
2057         int error = 0;
2058
2059
2060         error = dmu_bonus_hold(spa->spa_meta_objset,
2061             spa->spa_config_object, FTAG, &db);
2062
2063         if (error == 0) {
2064                 nvsize = *(uint64_t *)db->db_data;
2065                 dmu_buf_rele(db, FTAG);
2066
2067                 (void) printf("\nMOS Configuration:\n");
2068                 dump_packed_nvlist(spa->spa_meta_objset,
2069                     spa->spa_config_object, (void *)&nvsize, 1);
2070         } else {
2071                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
2072                     (u_longlong_t)spa->spa_config_object, error);
2073         }
2074 }
2075
2076 static void
2077 dump_cachefile(const char *cachefile)
2078 {
2079         int fd;
2080         struct stat64 statbuf;
2081         char *buf;
2082         nvlist_t *config;
2083
2084         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
2085                 (void) printf("cannot open '%s': %s\n", cachefile,
2086                     strerror(errno));
2087                 exit(1);
2088         }
2089
2090         if (fstat64(fd, &statbuf) != 0) {
2091                 (void) printf("failed to stat '%s': %s\n", cachefile,
2092                     strerror(errno));
2093                 exit(1);
2094         }
2095
2096         if ((buf = malloc(statbuf.st_size)) == NULL) {
2097                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
2098                     (u_longlong_t)statbuf.st_size);
2099                 exit(1);
2100         }
2101
2102         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2103                 (void) fprintf(stderr, "failed to read %llu bytes\n",
2104                     (u_longlong_t)statbuf.st_size);
2105                 exit(1);
2106         }
2107
2108         (void) close(fd);
2109
2110         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2111                 (void) fprintf(stderr, "failed to unpack nvlist\n");
2112                 exit(1);
2113         }
2114
2115         free(buf);
2116
2117         dump_nvlist(config, 0);
2118
2119         nvlist_free(config);
2120 }
2121
2122 #define ZDB_MAX_UB_HEADER_SIZE 32
2123
2124 static void
2125 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
2126 {
2127         vdev_t vd;
2128         vdev_t *vdp = &vd;
2129         char header[ZDB_MAX_UB_HEADER_SIZE];
2130
2131         vd.vdev_ashift = ashift;
2132         vdp->vdev_top = vdp;
2133
2134         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2135                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2136                 uberblock_t *ub = (void *)((char *)lbl + uoff);
2137
2138                 if (uberblock_verify(ub))
2139                         continue;
2140                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2141                     "Uberblock[%d]\n", i);
2142                 dump_uberblock(ub, header, "");
2143         }
2144 }
2145
2146 static void
2147 dump_label(const char *dev)
2148 {
2149         int fd;
2150         vdev_label_t label;
2151         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
2152         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2153         struct stat64 statbuf;
2154         uint64_t psize, ashift;
2155         int len = strlen(dev) + 1;
2156
2157         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
2158                 len++;
2159                 path = malloc(len);
2160                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
2161         } else {
2162                 path = strdup(dev);
2163         }
2164
2165         if ((fd = open64(path, O_RDONLY)) < 0) {
2166                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2167                 free(path);
2168                 exit(1);
2169         }
2170
2171         if (fstat64(fd, &statbuf) != 0) {
2172                 (void) printf("failed to stat '%s': %s\n", path,
2173                     strerror(errno));
2174                 free(path);
2175                 (void) close(fd);
2176                 exit(1);
2177         }
2178
2179         if (S_ISBLK(statbuf.st_mode)) {
2180                 (void) printf("cannot use '%s': character device required\n",
2181                     path);
2182                 free(path);
2183                 (void) close(fd);
2184                 exit(1);
2185         }
2186
2187         psize = statbuf.st_size;
2188         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2189
2190         for (int l = 0; l < VDEV_LABELS; l++) {
2191                 nvlist_t *config = NULL;
2192
2193                 (void) printf("--------------------------------------------\n");
2194                 (void) printf("LABEL %d\n", l);
2195                 (void) printf("--------------------------------------------\n");
2196
2197                 if (pread64(fd, &label, sizeof (label),
2198                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2199                         (void) printf("failed to read label %d\n", l);
2200                         continue;
2201                 }
2202
2203                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2204                         (void) printf("failed to unpack label %d\n", l);
2205                         ashift = SPA_MINBLOCKSHIFT;
2206                 } else {
2207                         nvlist_t *vdev_tree = NULL;
2208
2209                         dump_nvlist(config, 4);
2210                         if ((nvlist_lookup_nvlist(config,
2211                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2212                             (nvlist_lookup_uint64(vdev_tree,
2213                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2214                                 ashift = SPA_MINBLOCKSHIFT;
2215                         nvlist_free(config);
2216                 }
2217                 if (dump_opt['u'])
2218                         dump_label_uberblocks(&label, ashift);
2219         }
2220
2221         free(path);
2222         (void) close(fd);
2223 }
2224
2225 static uint64_t num_large_blocks;
2226
2227 /*ARGSUSED*/
2228 static int
2229 dump_one_dir(const char *dsname, void *arg)
2230 {
2231         int error;
2232         objset_t *os;
2233
2234         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2235         if (error) {
2236                 (void) printf("Could not open %s, error %d\n", dsname, error);
2237                 return (0);
2238         }
2239         if (dmu_objset_ds(os)->ds_large_blocks)
2240                 num_large_blocks++;
2241         dump_dir(os);
2242         dmu_objset_disown(os, FTAG);
2243         fuid_table_destroy();
2244         sa_loaded = B_FALSE;
2245         return (0);
2246 }
2247
2248 /*
2249  * Block statistics.
2250  */
2251 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2252 typedef struct zdb_blkstats {
2253         uint64_t zb_asize;
2254         uint64_t zb_lsize;
2255         uint64_t zb_psize;
2256         uint64_t zb_count;
2257         uint64_t zb_gangs;
2258         uint64_t zb_ditto_samevdev;
2259         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2260 } zdb_blkstats_t;
2261
2262 /*
2263  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2264  */
2265 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2266 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2267 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2268 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2269
2270 static char *zdb_ot_extname[] = {
2271         "deferred free",
2272         "dedup ditto",
2273         "other",
2274         "Total",
2275 };
2276
2277 #define ZB_TOTAL        DN_MAX_LEVELS
2278
2279 typedef struct zdb_cb {
2280         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2281         uint64_t        zcb_dedup_asize;
2282         uint64_t        zcb_dedup_blocks;
2283         uint64_t        zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2284         uint64_t        zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2285             [BPE_PAYLOAD_SIZE];
2286         uint64_t        zcb_start;
2287         uint64_t        zcb_lastprint;
2288         uint64_t        zcb_totalasize;
2289         uint64_t        zcb_errors[256];
2290         int             zcb_readfails;
2291         int             zcb_haderrors;
2292         spa_t           *zcb_spa;
2293 } zdb_cb_t;
2294
2295 static void
2296 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2297     dmu_object_type_t type)
2298 {
2299         uint64_t refcnt = 0;
2300
2301         ASSERT(type < ZDB_OT_TOTAL);
2302
2303         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2304                 return;
2305
2306         for (int i = 0; i < 4; i++) {
2307                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2308                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2309                 int equal;
2310                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2311
2312                 zb->zb_asize += BP_GET_ASIZE(bp);
2313                 zb->zb_lsize += BP_GET_LSIZE(bp);
2314                 zb->zb_psize += BP_GET_PSIZE(bp);
2315                 zb->zb_count++;
2316
2317                 /*
2318                  * The histogram is only big enough to record blocks up to
2319                  * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2320                  * "other", bucket.
2321                  */
2322                 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2323                 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2324                 zb->zb_psize_histogram[idx]++;
2325
2326                 zb->zb_gangs += BP_COUNT_GANG(bp);
2327
2328                 switch (BP_GET_NDVAS(bp)) {
2329                 case 2:
2330                         if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2331                             DVA_GET_VDEV(&bp->blk_dva[1]))
2332                                 zb->zb_ditto_samevdev++;
2333                         break;
2334                 case 3:
2335                         equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2336                             DVA_GET_VDEV(&bp->blk_dva[1])) +
2337                             (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2338                             DVA_GET_VDEV(&bp->blk_dva[2])) +
2339                             (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2340                             DVA_GET_VDEV(&bp->blk_dva[2]));
2341                         if (equal != 0)
2342                                 zb->zb_ditto_samevdev++;
2343                         break;
2344                 }
2345
2346         }
2347
2348         if (BP_IS_EMBEDDED(bp)) {
2349                 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2350                 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2351                     [BPE_GET_PSIZE(bp)]++;
2352                 return;
2353         }
2354
2355         if (dump_opt['L'])
2356                 return;
2357
2358         if (BP_GET_DEDUP(bp)) {
2359                 ddt_t *ddt;
2360                 ddt_entry_t *dde;
2361
2362                 ddt = ddt_select(zcb->zcb_spa, bp);
2363                 ddt_enter(ddt);
2364                 dde = ddt_lookup(ddt, bp, B_FALSE);
2365
2366                 if (dde == NULL) {
2367                         refcnt = 0;
2368                 } else {
2369                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2370                         ddt_phys_decref(ddp);
2371                         refcnt = ddp->ddp_refcnt;
2372                         if (ddt_phys_total_refcnt(dde) == 0)
2373                                 ddt_remove(ddt, dde);
2374                 }
2375                 ddt_exit(ddt);
2376         }
2377
2378         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2379             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2380             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2381 }
2382
2383 /* ARGSUSED */
2384 static void
2385 zdb_blkptr_done(zio_t *zio)
2386 {
2387         spa_t *spa = zio->io_spa;
2388         blkptr_t *bp = zio->io_bp;
2389         int ioerr = zio->io_error;
2390         zdb_cb_t *zcb = zio->io_private;
2391         zbookmark_phys_t *zb = &zio->io_bookmark;
2392
2393         zio_data_buf_free(zio->io_data, zio->io_size);
2394
2395         mutex_enter(&spa->spa_scrub_lock);
2396         spa->spa_scrub_inflight--;
2397         cv_broadcast(&spa->spa_scrub_io_cv);
2398
2399         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2400                 char blkbuf[BP_SPRINTF_LEN];
2401
2402                 zcb->zcb_haderrors = 1;
2403                 zcb->zcb_errors[ioerr]++;
2404
2405                 if (dump_opt['b'] >= 2)
2406                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2407                 else
2408                         blkbuf[0] = '\0';
2409
2410                 (void) printf("zdb_blkptr_cb: "
2411                     "Got error %d reading "
2412                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2413                     ioerr,
2414                     (u_longlong_t)zb->zb_objset,
2415                     (u_longlong_t)zb->zb_object,
2416                     (u_longlong_t)zb->zb_level,
2417                     (u_longlong_t)zb->zb_blkid,
2418                     blkbuf);
2419         }
2420         mutex_exit(&spa->spa_scrub_lock);
2421 }
2422
2423 /* ARGSUSED */
2424 static int
2425 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2426     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2427 {
2428         zdb_cb_t *zcb = arg;
2429         dmu_object_type_t type;
2430         boolean_t is_metadata;
2431
2432         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2433                 char blkbuf[BP_SPRINTF_LEN];
2434                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2435                 (void) printf("objset %llu object %llu "
2436                     "level %lld offset 0x%llx %s\n",
2437                     (u_longlong_t)zb->zb_objset,
2438                     (u_longlong_t)zb->zb_object,
2439                     (longlong_t)zb->zb_level,
2440                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2441                     blkbuf);
2442         }
2443
2444         if (BP_IS_HOLE(bp))
2445                 return (0);
2446
2447         type = BP_GET_TYPE(bp);
2448
2449         zdb_count_block(zcb, zilog, bp,
2450             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2451
2452         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2453
2454         if (!BP_IS_EMBEDDED(bp) &&
2455             (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2456                 size_t size = BP_GET_PSIZE(bp);
2457                 void *data = zio_data_buf_alloc(size);
2458                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2459
2460                 /* If it's an intent log block, failure is expected. */
2461                 if (zb->zb_level == ZB_ZIL_LEVEL)
2462                         flags |= ZIO_FLAG_SPECULATIVE;
2463
2464                 mutex_enter(&spa->spa_scrub_lock);
2465                 while (spa->spa_scrub_inflight > max_inflight)
2466                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2467                 spa->spa_scrub_inflight++;
2468                 mutex_exit(&spa->spa_scrub_lock);
2469
2470                 zio_nowait(zio_read(NULL, spa, bp, data, size,
2471                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2472         }
2473
2474         zcb->zcb_readfails = 0;
2475
2476         /* only call gethrtime() every 100 blocks */
2477         static int iters;
2478         if (++iters > 100)
2479                 iters = 0;
2480         else
2481                 return (0);
2482
2483         if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2484                 uint64_t now = gethrtime();
2485                 char buf[10];
2486                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2487                 int kb_per_sec =
2488                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2489                 int sec_remaining =
2490                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2491
2492                 zfs_nicenum(bytes, buf, sizeof (buf));
2493                 (void) fprintf(stderr,
2494                     "\r%5s completed (%4dMB/s) "
2495                     "estimated time remaining: %uhr %02umin %02usec        ",
2496                     buf, kb_per_sec / 1024,
2497                     sec_remaining / 60 / 60,
2498                     sec_remaining / 60 % 60,
2499                     sec_remaining % 60);
2500
2501                 zcb->zcb_lastprint = now;
2502         }
2503
2504         return (0);
2505 }
2506
2507 static void
2508 zdb_leak(void *arg, uint64_t start, uint64_t size)
2509 {
2510         vdev_t *vd = arg;
2511
2512         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2513             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2514 }
2515
2516 static metaslab_ops_t zdb_metaslab_ops = {
2517         NULL    /* alloc */
2518 };
2519
2520 static void
2521 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2522 {
2523         ddt_bookmark_t ddb = { 0 };
2524         ddt_entry_t dde;
2525         int error;
2526
2527         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2528                 blkptr_t blk;
2529                 ddt_phys_t *ddp = dde.dde_phys;
2530
2531                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2532                         return;
2533
2534                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2535
2536                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2537                         if (ddp->ddp_phys_birth == 0)
2538                                 continue;
2539                         ddt_bp_create(ddb.ddb_checksum,
2540                             &dde.dde_key, ddp, &blk);
2541                         if (p == DDT_PHYS_DITTO) {
2542                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2543                         } else {
2544                                 zcb->zcb_dedup_asize +=
2545                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2546                                 zcb->zcb_dedup_blocks++;
2547                         }
2548                 }
2549                 if (!dump_opt['L']) {
2550                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2551                         ddt_enter(ddt);
2552                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2553                         ddt_exit(ddt);
2554                 }
2555         }
2556
2557         ASSERT(error == ENOENT);
2558 }
2559
2560 static void
2561 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2562 {
2563         zcb->zcb_spa = spa;
2564
2565         if (!dump_opt['L']) {
2566                 vdev_t *rvd = spa->spa_root_vdev;
2567                 for (uint64_t c = 0; c < rvd->vdev_children; c++) {
2568                         vdev_t *vd = rvd->vdev_child[c];
2569                         for (uint64_t m = 0; m < vd->vdev_ms_count; m++) {
2570                                 metaslab_t *msp = vd->vdev_ms[m];
2571                                 mutex_enter(&msp->ms_lock);
2572                                 metaslab_unload(msp);
2573
2574                                 /*
2575                                  * For leak detection, we overload the metaslab
2576                                  * ms_tree to contain allocated segments
2577                                  * instead of free segments. As a result,
2578                                  * we can't use the normal metaslab_load/unload
2579                                  * interfaces.
2580                                  */
2581                                 if (msp->ms_sm != NULL) {
2582                                         (void) fprintf(stderr,
2583                                             "\rloading space map for "
2584                                             "vdev %llu of %llu, "
2585                                             "metaslab %llu of %llu ...",
2586                                             (longlong_t)c,
2587                                             (longlong_t)rvd->vdev_children,
2588                                             (longlong_t)m,
2589                                             (longlong_t)vd->vdev_ms_count);
2590
2591                                         msp->ms_ops = &zdb_metaslab_ops;
2592
2593                                         /*
2594                                          * We don't want to spend the CPU
2595                                          * manipulating the size-ordered
2596                                          * tree, so clear the range_tree
2597                                          * ops.
2598                                          */
2599                                         msp->ms_tree->rt_ops = NULL;
2600                                         VERIFY0(space_map_load(msp->ms_sm,
2601                                             msp->ms_tree, SM_ALLOC));
2602                                         msp->ms_loaded = B_TRUE;
2603                                 }
2604                                 mutex_exit(&msp->ms_lock);
2605                         }
2606                 }
2607                 (void) fprintf(stderr, "\n");
2608         }
2609
2610         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2611
2612         zdb_ddt_leak_init(spa, zcb);
2613
2614         spa_config_exit(spa, SCL_CONFIG, FTAG);
2615 }
2616
2617 static void
2618 zdb_leak_fini(spa_t *spa)
2619 {
2620         if (!dump_opt['L']) {
2621                 vdev_t *rvd = spa->spa_root_vdev;
2622                 for (int c = 0; c < rvd->vdev_children; c++) {
2623                         vdev_t *vd = rvd->vdev_child[c];
2624                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2625                                 metaslab_t *msp = vd->vdev_ms[m];
2626                                 mutex_enter(&msp->ms_lock);
2627
2628                                 /*
2629                                  * The ms_tree has been overloaded to
2630                                  * contain allocated segments. Now that we
2631                                  * finished traversing all blocks, any
2632                                  * block that remains in the ms_tree
2633                                  * represents an allocated block that we
2634                                  * did not claim during the traversal.
2635                                  * Claimed blocks would have been removed
2636                                  * from the ms_tree.
2637                                  */
2638                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2639                                 msp->ms_loaded = B_FALSE;
2640
2641                                 mutex_exit(&msp->ms_lock);
2642                         }
2643                 }
2644         }
2645 }
2646
2647 /* ARGSUSED */
2648 static int
2649 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2650 {
2651         zdb_cb_t *zcb = arg;
2652
2653         if (dump_opt['b'] >= 5) {
2654                 char blkbuf[BP_SPRINTF_LEN];
2655                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2656                 (void) printf("[%s] %s\n",
2657                     "deferred free", blkbuf);
2658         }
2659         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2660         return (0);
2661 }
2662
2663 static int
2664 dump_block_stats(spa_t *spa)
2665 {
2666         zdb_cb_t zcb = { 0 };
2667         zdb_blkstats_t *zb, *tzb;
2668         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2669         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2670         boolean_t leaks = B_FALSE;
2671
2672         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2673             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2674             (dump_opt['c'] == 1) ? "metadata " : "",
2675             dump_opt['c'] ? "checksums " : "",
2676             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2677             !dump_opt['L'] ? "nothing leaked " : "");
2678
2679         /*
2680          * Load all space maps as SM_ALLOC maps, then traverse the pool
2681          * claiming each block we discover.  If the pool is perfectly
2682          * consistent, the space maps will be empty when we're done.
2683          * Anything left over is a leak; any block we can't claim (because
2684          * it's not part of any space map) is a double allocation,
2685          * reference to a freed block, or an unclaimed log block.
2686          */
2687         zdb_leak_init(spa, &zcb);
2688
2689         /*
2690          * If there's a deferred-free bplist, process that first.
2691          */
2692         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2693             count_block_cb, &zcb, NULL);
2694         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2695                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2696                     count_block_cb, &zcb, NULL);
2697         }
2698         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2699                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2700                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2701                     &zcb, NULL));
2702         }
2703
2704         if (dump_opt['c'] > 1)
2705                 flags |= TRAVERSE_PREFETCH_DATA;
2706
2707         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2708         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2709         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2710
2711         /*
2712          * If we've traversed the data blocks then we need to wait for those
2713          * I/Os to complete. We leverage "The Godfather" zio to wait on
2714          * all async I/Os to complete.
2715          */
2716         if (dump_opt['c']) {
2717                 for (int i = 0; i < max_ncpus; i++) {
2718                         (void) zio_wait(spa->spa_async_zio_root[i]);
2719                         spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
2720                             ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2721                             ZIO_FLAG_GODFATHER);
2722                 }
2723         }
2724
2725         if (zcb.zcb_haderrors) {
2726                 (void) printf("\nError counts:\n\n");
2727                 (void) printf("\t%5s  %s\n", "errno", "count");
2728                 for (int e = 0; e < 256; e++) {
2729                         if (zcb.zcb_errors[e] != 0) {
2730                                 (void) printf("\t%5d  %llu\n",
2731                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2732                         }
2733                 }
2734         }
2735
2736         /*
2737          * Report any leaked segments.
2738          */
2739         zdb_leak_fini(spa);
2740
2741         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2742
2743         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2744         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2745
2746         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2747         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2748
2749         if (total_found == total_alloc) {
2750                 if (!dump_opt['L'])
2751                         (void) printf("\n\tNo leaks (block sum matches space"
2752                             " maps exactly)\n");
2753         } else {
2754                 (void) printf("block traversal size %llu != alloc %llu "
2755                     "(%s %lld)\n",
2756                     (u_longlong_t)total_found,
2757                     (u_longlong_t)total_alloc,
2758                     (dump_opt['L']) ? "unreachable" : "leaked",
2759                     (longlong_t)(total_alloc - total_found));
2760                 leaks = B_TRUE;
2761         }
2762
2763         if (tzb->zb_count == 0)
2764                 return (2);
2765
2766         (void) printf("\n");
2767         (void) printf("\tbp count:      %10llu\n",
2768             (u_longlong_t)tzb->zb_count);
2769         (void) printf("\tganged count:  %10llu\n",
2770             (longlong_t)tzb->zb_gangs);
2771         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2772             (u_longlong_t)tzb->zb_lsize,
2773             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2774         (void) printf("\tbp physical:   %10llu      avg:"
2775             " %6llu     compression: %6.2f\n",
2776             (u_longlong_t)tzb->zb_psize,
2777             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2778             (double)tzb->zb_lsize / tzb->zb_psize);
2779         (void) printf("\tbp allocated:  %10llu      avg:"
2780             " %6llu     compression: %6.2f\n",
2781             (u_longlong_t)tzb->zb_asize,
2782             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2783             (double)tzb->zb_lsize / tzb->zb_asize);
2784         (void) printf("\tbp deduped:    %10llu    ref>1:"
2785             " %6llu   deduplication: %6.2f\n",
2786             (u_longlong_t)zcb.zcb_dedup_asize,
2787             (u_longlong_t)zcb.zcb_dedup_blocks,
2788             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2789         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2790             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2791
2792         for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2793                 if (zcb.zcb_embedded_blocks[i] == 0)
2794                         continue;
2795                 (void) printf("\n");
2796                 (void) printf("\tadditional, non-pointer bps of type %u: "
2797                     "%10llu\n",
2798                     i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2799
2800                 if (dump_opt['b'] >= 3) {
2801                         (void) printf("\t number of (compressed) bytes:  "
2802                             "number of bps\n");
2803                         dump_histogram(zcb.zcb_embedded_histogram[i],
2804                             sizeof (zcb.zcb_embedded_histogram[i]) /
2805                             sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
2806                 }
2807         }
2808
2809         if (tzb->zb_ditto_samevdev != 0) {
2810                 (void) printf("\tDittoed blocks on same vdev: %llu\n",
2811                     (longlong_t)tzb->zb_ditto_samevdev);
2812         }
2813
2814         if (dump_opt['b'] >= 2) {
2815                 int l, t, level;
2816                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2817                     "\t  avg\t comp\t%%Total\tType\n");
2818
2819                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2820                         char csize[32], lsize[32], psize[32], asize[32];
2821                         char avg[32], gang[32];
2822                         char *typename;
2823
2824                         if (t < DMU_OT_NUMTYPES)
2825                                 typename = dmu_ot[t].ot_name;
2826                         else
2827                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2828
2829                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2830                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2831                                     "\t%5s\t%5s\t%6s\t%s\n",
2832                                     "-",
2833                                     "-",
2834                                     "-",
2835                                     "-",
2836                                     "-",
2837                                     "-",
2838                                     "-",
2839                                     typename);
2840                                 continue;
2841                         }
2842
2843                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2844                                 level = (l == -1 ? ZB_TOTAL : l);
2845                                 zb = &zcb.zcb_type[level][t];
2846
2847                                 if (zb->zb_asize == 0)
2848                                         continue;
2849
2850                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2851                                         continue;
2852
2853                                 if (level == 0 && zb->zb_asize ==
2854                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2855                                         continue;
2856
2857                                 zdb_nicenum(zb->zb_count, csize);
2858                                 zdb_nicenum(zb->zb_lsize, lsize);
2859                                 zdb_nicenum(zb->zb_psize, psize);
2860                                 zdb_nicenum(zb->zb_asize, asize);
2861                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2862                                 zdb_nicenum(zb->zb_gangs, gang);
2863
2864                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2865                                     "\t%5.2f\t%6.2f\t",
2866                                     csize, lsize, psize, asize, avg,
2867                                     (double)zb->zb_lsize / zb->zb_psize,
2868                                     100.0 * zb->zb_asize / tzb->zb_asize);
2869
2870                                 if (level == ZB_TOTAL)
2871                                         (void) printf("%s\n", typename);
2872                                 else
2873                                         (void) printf("    L%d %s\n",
2874                                             level, typename);
2875
2876                                 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2877                                         (void) printf("\t number of ganged "
2878                                             "blocks: %s\n", gang);
2879                                 }
2880
2881                                 if (dump_opt['b'] >= 4) {
2882                                         (void) printf("psize "
2883                                             "(in 512-byte sectors): "
2884                                             "number of blocks\n");
2885                                         dump_histogram(zb->zb_psize_histogram,
2886                                             PSIZE_HISTO_SIZE, 0);
2887                                 }
2888                         }
2889                 }
2890         }
2891
2892         (void) printf("\n");
2893
2894         if (leaks)
2895                 return (2);
2896
2897         if (zcb.zcb_haderrors)
2898                 return (3);
2899
2900         return (0);
2901 }
2902
2903 typedef struct zdb_ddt_entry {
2904         ddt_key_t       zdde_key;
2905         uint64_t        zdde_ref_blocks;
2906         uint64_t        zdde_ref_lsize;
2907         uint64_t        zdde_ref_psize;
2908         uint64_t        zdde_ref_dsize;
2909         avl_node_t      zdde_node;
2910 } zdb_ddt_entry_t;
2911
2912 /* ARGSUSED */
2913 static int
2914 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2915     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2916 {
2917         avl_tree_t *t = arg;
2918         avl_index_t where;
2919         zdb_ddt_entry_t *zdde, zdde_search;
2920
2921         if (BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
2922                 return (0);
2923
2924         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2925                 (void) printf("traversing objset %llu, %llu objects, "
2926                     "%lu blocks so far\n",
2927                     (u_longlong_t)zb->zb_objset,
2928                     (u_longlong_t)BP_GET_FILL(bp),
2929                     avl_numnodes(t));
2930         }
2931
2932         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2933             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2934                 return (0);
2935
2936         ddt_key_fill(&zdde_search.zdde_key, bp);
2937
2938         zdde = avl_find(t, &zdde_search, &where);
2939
2940         if (zdde == NULL) {
2941                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2942                 zdde->zdde_key = zdde_search.zdde_key;
2943                 avl_insert(t, zdde, where);
2944         }
2945
2946         zdde->zdde_ref_blocks += 1;
2947         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2948         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2949         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2950
2951         return (0);
2952 }
2953
2954 static void
2955 dump_simulated_ddt(spa_t *spa)
2956 {
2957         avl_tree_t t;
2958         void *cookie = NULL;
2959         zdb_ddt_entry_t *zdde;
2960         ddt_histogram_t ddh_total = { 0 };
2961         ddt_stat_t dds_total = { 0 };
2962
2963         avl_create(&t, ddt_entry_compare,
2964             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2965
2966         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2967
2968         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2969             zdb_ddt_add_cb, &t);
2970
2971         spa_config_exit(spa, SCL_CONFIG, FTAG);
2972
2973         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2974                 ddt_stat_t dds;
2975                 uint64_t refcnt = zdde->zdde_ref_blocks;
2976                 ASSERT(refcnt != 0);
2977
2978                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2979                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2980                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2981                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2982
2983                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2984                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2985                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2986                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2987
2988                 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
2989                     &dds, 0);
2990
2991                 umem_free(zdde, sizeof (*zdde));
2992         }
2993
2994         avl_destroy(&t);
2995
2996         ddt_histogram_stat(&dds_total, &ddh_total);
2997
2998         (void) printf("Simulated DDT histogram:\n");
2999
3000         zpool_dump_ddt(&dds_total, &ddh_total);
3001
3002         dump_dedup_ratio(&dds_total);
3003 }
3004
3005 static void
3006 dump_zpool(spa_t *spa)
3007 {
3008         dsl_pool_t *dp = spa_get_dsl(spa);
3009         int rc = 0;
3010
3011         if (dump_opt['S']) {
3012                 dump_simulated_ddt(spa);
3013                 return;
3014         }
3015
3016         if (!dump_opt['e'] && dump_opt['C'] > 1) {
3017                 (void) printf("\nCached configuration:\n");
3018                 dump_nvlist(spa->spa_config, 8);
3019         }
3020
3021         if (dump_opt['C'])
3022                 dump_config(spa);
3023
3024         if (dump_opt['u'])
3025                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
3026
3027         if (dump_opt['D'])
3028                 dump_all_ddts(spa);
3029
3030         if (dump_opt['d'] > 2 || dump_opt['m'])
3031                 dump_metaslabs(spa);
3032         if (dump_opt['M'])
3033                 dump_metaslab_groups(spa);
3034
3035         if (dump_opt['d'] || dump_opt['i']) {
3036                 uint64_t refcount;
3037                 dump_dir(dp->dp_meta_objset);
3038                 if (dump_opt['d'] >= 3) {
3039                         dump_full_bpobj(&spa->spa_deferred_bpobj,
3040                             "Deferred frees", 0);
3041                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3042                                 dump_full_bpobj(
3043                                     &spa->spa_dsl_pool->dp_free_bpobj,
3044                                     "Pool snapshot frees", 0);
3045                         }
3046
3047                         if (spa_feature_is_active(spa,
3048                             SPA_FEATURE_ASYNC_DESTROY)) {
3049                                 dump_bptree(spa->spa_meta_objset,
3050                                     spa->spa_dsl_pool->dp_bptree_obj,
3051                                     "Pool dataset frees");
3052                         }
3053                         dump_dtl(spa->spa_root_vdev, 0);
3054                 }
3055                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
3056                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
3057
3058                 (void) feature_get_refcount(spa,
3059                     &spa_feature_table[SPA_FEATURE_LARGE_BLOCKS], &refcount);
3060                 if (num_large_blocks != refcount) {
3061                         (void) printf("large_blocks feature refcount mismatch: "
3062                             "expected %lld != actual %lld\n",
3063                             (longlong_t)num_large_blocks,
3064                             (longlong_t)refcount);
3065                         rc = 2;
3066                 } else {
3067                         (void) printf("Verified large_blocks feature refcount "
3068                             "is correct (%llu)\n", (longlong_t)refcount);
3069                 }
3070         }
3071         if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
3072                 rc = dump_block_stats(spa);
3073
3074         if (rc == 0)
3075                 rc = verify_spacemap_refcounts(spa);
3076
3077         if (dump_opt['s'])
3078                 show_pool_stats(spa);
3079
3080         if (dump_opt['h'])
3081                 dump_history(spa);
3082
3083         if (rc != 0)
3084                 exit(rc);
3085 }
3086
3087 #define ZDB_FLAG_CHECKSUM       0x0001
3088 #define ZDB_FLAG_DECOMPRESS     0x0002
3089 #define ZDB_FLAG_BSWAP          0x0004
3090 #define ZDB_FLAG_GBH            0x0008
3091 #define ZDB_FLAG_INDIRECT       0x0010
3092 #define ZDB_FLAG_PHYS           0x0020
3093 #define ZDB_FLAG_RAW            0x0040
3094 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
3095
3096 int flagbits[256];
3097
3098 static void
3099 zdb_print_blkptr(blkptr_t *bp, int flags)
3100 {
3101         char blkbuf[BP_SPRINTF_LEN];
3102
3103         if (flags & ZDB_FLAG_BSWAP)
3104                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3105
3106         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3107         (void) printf("%s\n", blkbuf);
3108 }
3109
3110 static void
3111 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3112 {
3113         int i;
3114
3115         for (i = 0; i < nbps; i++)
3116                 zdb_print_blkptr(&bp[i], flags);
3117 }
3118
3119 static void
3120 zdb_dump_gbh(void *buf, int flags)
3121 {
3122         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3123 }
3124
3125 static void
3126 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3127 {
3128         if (flags & ZDB_FLAG_BSWAP)
3129                 byteswap_uint64_array(buf, size);
3130         (void) write(1, buf, size);
3131 }
3132
3133 static void
3134 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3135 {
3136         uint64_t *d = (uint64_t *)buf;
3137         int nwords = size / sizeof (uint64_t);
3138         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3139         int i, j;
3140         char *hdr, *c;
3141
3142
3143         if (do_bswap)
3144                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
3145         else
3146                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
3147
3148         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
3149
3150         for (i = 0; i < nwords; i += 2) {
3151                 (void) printf("%06llx:  %016llx  %016llx  ",
3152                     (u_longlong_t)(i * sizeof (uint64_t)),
3153                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3154                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3155
3156                 c = (char *)&d[i];
3157                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3158                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3159                 (void) printf("\n");
3160         }
3161 }
3162
3163 /*
3164  * There are two acceptable formats:
3165  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
3166  *      child[.child]*    - For example: 0.1.1
3167  *
3168  * The second form can be used to specify arbitrary vdevs anywhere
3169  * in the heirarchy.  For example, in a pool with a mirror of
3170  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3171  */
3172 static vdev_t *
3173 zdb_vdev_lookup(vdev_t *vdev, char *path)
3174 {
3175         char *s, *p, *q;
3176         int i;
3177
3178         if (vdev == NULL)
3179                 return (NULL);
3180
3181         /* First, assume the x.x.x.x format */
3182         i = (int)strtoul(path, &s, 10);
3183         if (s == path || (s && *s != '.' && *s != '\0'))
3184                 goto name;
3185         if (i < 0 || i >= vdev->vdev_children)
3186                 return (NULL);
3187
3188         vdev = vdev->vdev_child[i];
3189         if (*s == '\0')
3190                 return (vdev);
3191         return (zdb_vdev_lookup(vdev, s+1));
3192
3193 name:
3194         for (i = 0; i < vdev->vdev_children; i++) {
3195                 vdev_t *vc = vdev->vdev_child[i];
3196
3197                 if (vc->vdev_path == NULL) {
3198                         vc = zdb_vdev_lookup(vc, path);
3199                         if (vc == NULL)
3200                                 continue;
3201                         else
3202                                 return (vc);
3203                 }
3204
3205                 p = strrchr(vc->vdev_path, '/');
3206                 p = p ? p + 1 : vc->vdev_path;
3207                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3208
3209                 if (strcmp(vc->vdev_path, path) == 0)
3210                         return (vc);
3211                 if (strcmp(p, path) == 0)
3212                         return (vc);
3213                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3214                         return (vc);
3215         }
3216
3217         return (NULL);
3218 }
3219
3220 /*
3221  * Read a block from a pool and print it out.  The syntax of the
3222  * block descriptor is:
3223  *
3224  *      pool:vdev_specifier:offset:size[:flags]
3225  *
3226  *      pool           - The name of the pool you wish to read from
3227  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3228  *      offset         - offset, in hex, in bytes
3229  *      size           - Amount of data to read, in hex, in bytes
3230  *      flags          - A string of characters specifying options
3231  *               b: Decode a blkptr at given offset within block
3232  *              *c: Calculate and display checksums
3233  *               d: Decompress data before dumping
3234  *               e: Byteswap data before dumping
3235  *               g: Display data as a gang block header
3236  *               i: Display as an indirect block
3237  *               p: Do I/O to physical offset
3238  *               r: Dump raw data to stdout
3239  *
3240  *              * = not yet implemented
3241  */
3242 static void
3243 zdb_read_block(char *thing, spa_t *spa)
3244 {
3245         blkptr_t blk, *bp = &blk;
3246         dva_t *dva = bp->blk_dva;
3247         int flags = 0;
3248         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3249         zio_t *zio;
3250         vdev_t *vd;
3251         void *pbuf, *lbuf, *buf;
3252         char *s, *p, *dup, *vdev, *flagstr;
3253         int i, error;
3254
3255         dup = strdup(thing);
3256         s = strtok(dup, ":");
3257         vdev = s ? s : "";
3258         s = strtok(NULL, ":");
3259         offset = strtoull(s ? s : "", NULL, 16);
3260         s = strtok(NULL, ":");
3261         size = strtoull(s ? s : "", NULL, 16);
3262         s = strtok(NULL, ":");
3263         flagstr = s ? s : "";
3264
3265         s = NULL;
3266         if (size == 0)
3267                 s = "size must not be zero";
3268         if (!IS_P2ALIGNED(size, DEV_BSIZE))
3269                 s = "size must be a multiple of sector size";
3270         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3271                 s = "offset must be a multiple of sector size";
3272         if (s) {
3273                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3274                 free(dup);
3275                 return;
3276         }
3277
3278         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3279                 for (i = 0; flagstr[i]; i++) {
3280                         int bit = flagbits[(uchar_t)flagstr[i]];
3281
3282                         if (bit == 0) {
3283                                 (void) printf("***Invalid flag: %c\n",
3284                                     flagstr[i]);
3285                                 continue;
3286                         }
3287                         flags |= bit;
3288
3289                         /* If it's not something with an argument, keep going */
3290                         if ((bit & (ZDB_FLAG_CHECKSUM |
3291                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3292                                 continue;
3293
3294                         p = &flagstr[i + 1];
3295                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
3296                                 blkptr_offset = strtoull(p, &p, 16);
3297                         if (*p != ':' && *p != '\0') {
3298                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3299                                 free(dup);
3300                                 return;
3301                         }
3302                         i += p - &flagstr[i + 1]; /* skip over the number */
3303                 }
3304         }
3305
3306         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3307         if (vd == NULL) {
3308                 (void) printf("***Invalid vdev: %s\n", vdev);
3309                 free(dup);
3310                 return;
3311         } else {
3312                 if (vd->vdev_path)
3313                         (void) fprintf(stderr, "Found vdev: %s\n",
3314                             vd->vdev_path);
3315                 else
3316                         (void) fprintf(stderr, "Found vdev type: %s\n",
3317                             vd->vdev_ops->vdev_op_type);
3318         }
3319
3320         psize = size;
3321         lsize = size;
3322
3323         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3324         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3325
3326         BP_ZERO(bp);
3327
3328         DVA_SET_VDEV(&dva[0], vd->vdev_id);
3329         DVA_SET_OFFSET(&dva[0], offset);
3330         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3331         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3332
3333         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3334
3335         BP_SET_LSIZE(bp, lsize);
3336         BP_SET_PSIZE(bp, psize);
3337         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3338         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3339         BP_SET_TYPE(bp, DMU_OT_NONE);
3340         BP_SET_LEVEL(bp, 0);
3341         BP_SET_DEDUP(bp, 0);
3342         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3343
3344         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3345         zio = zio_root(spa, NULL, NULL, 0);
3346
3347         if (vd == vd->vdev_top) {
3348                 /*
3349                  * Treat this as a normal block read.
3350                  */
3351                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3352                     ZIO_PRIORITY_SYNC_READ,
3353                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3354         } else {
3355                 /*
3356                  * Treat this as a vdev child I/O.
3357                  */
3358                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3359                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3360                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3361                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3362                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3363         }
3364
3365         error = zio_wait(zio);
3366         spa_config_exit(spa, SCL_STATE, FTAG);
3367
3368         if (error) {
3369                 (void) printf("Read of %s failed, error: %d\n", thing, error);
3370                 goto out;
3371         }
3372
3373         if (flags & ZDB_FLAG_DECOMPRESS) {
3374                 /*
3375                  * We don't know how the data was compressed, so just try
3376                  * every decompress function at every inflated blocksize.
3377                  */
3378                 enum zio_compress c;
3379                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3380                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3381
3382                 bcopy(pbuf, pbuf2, psize);
3383
3384                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3385                     SPA_MAXBLOCKSIZE - psize) == 0);
3386
3387                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3388                     SPA_MAXBLOCKSIZE - psize) == 0);
3389
3390                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3391                     lsize -= SPA_MINBLOCKSIZE) {
3392                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3393                                 if (zio_decompress_data(c, pbuf, lbuf,
3394                                     psize, lsize) == 0 &&
3395                                     zio_decompress_data(c, pbuf2, lbuf2,
3396                                     psize, lsize) == 0 &&
3397                                     bcmp(lbuf, lbuf2, lsize) == 0)
3398                                         break;
3399                         }
3400                         if (c != ZIO_COMPRESS_FUNCTIONS)
3401                                 break;
3402                         lsize -= SPA_MINBLOCKSIZE;
3403                 }
3404
3405                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3406                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3407
3408                 if (lsize <= psize) {
3409                         (void) printf("Decompress of %s failed\n", thing);
3410                         goto out;
3411                 }
3412                 buf = lbuf;
3413                 size = lsize;
3414         } else {
3415                 buf = pbuf;
3416                 size = psize;
3417         }
3418
3419         if (flags & ZDB_FLAG_PRINT_BLKPTR)
3420                 zdb_print_blkptr((blkptr_t *)(void *)
3421                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3422         else if (flags & ZDB_FLAG_RAW)
3423                 zdb_dump_block_raw(buf, size, flags);
3424         else if (flags & ZDB_FLAG_INDIRECT)
3425                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3426                     flags);
3427         else if (flags & ZDB_FLAG_GBH)
3428                 zdb_dump_gbh(buf, flags);
3429         else
3430                 zdb_dump_block(thing, buf, size, flags);
3431
3432 out:
3433         umem_free(pbuf, SPA_MAXBLOCKSIZE);
3434         umem_free(lbuf, SPA_MAXBLOCKSIZE);
3435         free(dup);
3436 }
3437
3438 static boolean_t
3439 pool_match(nvlist_t *cfg, char *tgt)
3440 {
3441         uint64_t v, guid = strtoull(tgt, NULL, 0);
3442         char *s;
3443
3444         if (guid != 0) {
3445                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3446                         return (v == guid);
3447         } else {
3448                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3449                         return (strcmp(s, tgt) == 0);
3450         }
3451         return (B_FALSE);
3452 }
3453
3454 static char *
3455 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3456 {
3457         nvlist_t *pools;
3458         nvlist_t *match = NULL;
3459         char *name = NULL;
3460         char *sepp = NULL;
3461         char sep;
3462         int count = 0;
3463         importargs_t args = { 0 };
3464
3465         args.paths = dirc;
3466         args.path = dirv;
3467         args.can_be_active = B_TRUE;
3468
3469         if ((sepp = strpbrk(*target, "/@")) != NULL) {
3470                 sep = *sepp;
3471                 *sepp = '\0';
3472         }
3473
3474         pools = zpool_search_import(g_zfs, &args);
3475
3476         if (pools != NULL) {
3477                 nvpair_t *elem = NULL;
3478                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3479                         verify(nvpair_value_nvlist(elem, configp) == 0);
3480                         if (pool_match(*configp, *target)) {
3481                                 count++;
3482                                 if (match != NULL) {
3483                                         /* print previously found config */
3484                                         if (name != NULL) {
3485                                                 (void) printf("%s\n", name);
3486                                                 dump_nvlist(match, 8);
3487                                                 name = NULL;
3488                                         }
3489                                         (void) printf("%s\n",
3490                                             nvpair_name(elem));
3491                                         dump_nvlist(*configp, 8);
3492                                 } else {
3493                                         match = *configp;
3494                                         name = nvpair_name(elem);
3495                                 }
3496                         }
3497                 }
3498         }
3499         if (count > 1)
3500                 (void) fatal("\tMatched %d pools - use pool GUID "
3501                     "instead of pool name or \n"
3502                     "\tpool name part of a dataset name to select pool", count);
3503
3504         if (sepp)
3505                 *sepp = sep;
3506         /*
3507          * If pool GUID was specified for pool id, replace it with pool name
3508          */
3509         if (name && (strstr(*target, name) != *target)) {
3510                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3511
3512                 *target = umem_alloc(sz, UMEM_NOFAIL);
3513                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3514         }
3515
3516         *configp = name ? match : NULL;
3517
3518         return (name);
3519 }
3520
3521 int
3522 main(int argc, char **argv)
3523 {
3524         int i, c;
3525         struct rlimit rl = { 1024, 1024 };
3526         spa_t *spa = NULL;
3527         objset_t *os = NULL;
3528         int dump_all = 1;
3529         int verbose = 0;
3530         int error = 0;
3531         char **searchdirs = NULL;
3532         int nsearch = 0;
3533         char *target;
3534         nvlist_t *policy = NULL;
3535         uint64_t max_txg = UINT64_MAX;
3536         int rewind = ZPOOL_NEVER_REWIND;
3537
3538         (void) setrlimit(RLIMIT_NOFILE, &rl);
3539         (void) enable_extended_FILE_stdio(-1, -1);
3540
3541         dprintf_setup(&argc, argv);
3542
3543         while ((c = getopt(argc, argv,
3544             "bcdhilmMI:suCDRSAFLXx:evp:t:U:P")) != -1) {
3545                 switch (c) {
3546                 case 'b':
3547                 case 'c':
3548                 case 'd':
3549                 case 'h':
3550                 case 'i':
3551                 case 'l':
3552                 case 'm':
3553                 case 's':
3554                 case 'u':
3555                 case 'C':
3556                 case 'D':
3557                 case 'M':
3558                 case 'R':
3559                 case 'S':
3560                         dump_opt[c]++;
3561                         dump_all = 0;
3562                         break;
3563                 case 'A':
3564                 case 'F':
3565                 case 'L':
3566                 case 'X':
3567                 case 'e':
3568                 case 'P':
3569                         dump_opt[c]++;
3570                         break;
3571                 case 'I':
3572                         max_inflight = strtoull(optarg, NULL, 0);
3573                         if (max_inflight == 0) {
3574                                 (void) fprintf(stderr, "maximum number "
3575                                     "of inflight I/Os must be greater "
3576                                     "than 0\n");
3577                                 usage();
3578                         }
3579                         break;
3580                 case 'p':
3581                         if (searchdirs == NULL) {
3582                                 searchdirs = umem_alloc(sizeof (char *),
3583                                     UMEM_NOFAIL);
3584                         } else {
3585                                 char **tmp = umem_alloc((nsearch + 1) *
3586                                     sizeof (char *), UMEM_NOFAIL);
3587                                 bcopy(searchdirs, tmp, nsearch *
3588                                     sizeof (char *));
3589                                 umem_free(searchdirs,
3590                                     nsearch * sizeof (char *));
3591                                 searchdirs = tmp;
3592                         }
3593                         searchdirs[nsearch++] = optarg;
3594                         break;
3595                 case 't':
3596                         max_txg = strtoull(optarg, NULL, 0);
3597                         if (max_txg < TXG_INITIAL) {
3598                                 (void) fprintf(stderr, "incorrect txg "
3599                                     "specified: %s\n", optarg);
3600                                 usage();
3601                         }
3602                         break;
3603                 case 'U':
3604                         spa_config_path = optarg;
3605                         break;
3606                 case 'v':
3607                         verbose++;
3608                         break;
3609                 case 'x':
3610                         vn_dumpdir = optarg;
3611                         break;
3612                 default:
3613                         usage();
3614                         break;
3615                 }
3616         }
3617
3618         if (!dump_opt['e'] && searchdirs != NULL) {
3619                 (void) fprintf(stderr, "-p option requires use of -e\n");
3620                 usage();
3621         }
3622
3623         /*
3624          * ZDB does not typically re-read blocks; therefore limit the ARC
3625          * to 256 MB, which can be used entirely for metadata.
3626          */
3627         zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
3628
3629         /*
3630          * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
3631          * "zdb -b" uses traversal prefetch which uses async reads.
3632          * For good performance, let several of them be active at once.
3633          */
3634         zfs_vdev_async_read_max_active = 10;
3635
3636         kernel_init(FREAD);
3637         g_zfs = libzfs_init();
3638         ASSERT(g_zfs != NULL);
3639
3640         if (dump_all)
3641                 verbose = MAX(verbose, 1);
3642
3643         for (c = 0; c < 256; c++) {
3644                 if (dump_all && !strchr("elAFLRSXP", c))
3645                         dump_opt[c] = 1;
3646                 if (dump_opt[c])
3647                         dump_opt[c] += verbose;
3648         }
3649
3650         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3651         zfs_recover = (dump_opt['A'] > 1);
3652
3653         argc -= optind;
3654         argv += optind;
3655
3656         if (argc < 2 && dump_opt['R'])
3657                 usage();
3658         if (argc < 1) {
3659                 if (!dump_opt['e'] && dump_opt['C']) {
3660                         dump_cachefile(spa_config_path);
3661                         return (0);
3662                 }
3663                 usage();
3664         }
3665
3666         if (dump_opt['l']) {
3667                 dump_label(argv[0]);
3668                 return (0);
3669         }
3670
3671         if (dump_opt['X'] || dump_opt['F'])
3672                 rewind = ZPOOL_DO_REWIND |
3673                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3674
3675         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3676             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3677             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3678                 fatal("internal error: %s", strerror(ENOMEM));
3679
3680         error = 0;
3681         target = argv[0];
3682
3683         if (dump_opt['e']) {
3684                 nvlist_t *cfg = NULL;
3685                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3686
3687                 error = ENOENT;
3688                 if (name) {
3689                         if (dump_opt['C'] > 1) {
3690                                 (void) printf("\nConfiguration for import:\n");
3691                                 dump_nvlist(cfg, 8);
3692                         }
3693                         if (nvlist_add_nvlist(cfg,
3694                             ZPOOL_REWIND_POLICY, policy) != 0) {
3695                                 fatal("can't open '%s': %s",
3696                                     target, strerror(ENOMEM));
3697                         }
3698                         if ((error = spa_import(name, cfg, NULL,
3699                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3700                                 error = spa_import(name, cfg, NULL,
3701                                     ZFS_IMPORT_VERBATIM);
3702                         }
3703                 }
3704         }
3705
3706         if (error == 0) {
3707                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3708                         error = spa_open_rewind(target, &spa, FTAG, policy,
3709                             NULL);
3710                         if (error) {
3711                                 /*
3712                                  * If we're missing the log device then
3713                                  * try opening the pool after clearing the
3714                                  * log state.
3715                                  */
3716                                 mutex_enter(&spa_namespace_lock);
3717                                 if ((spa = spa_lookup(target)) != NULL &&
3718                                     spa->spa_log_state == SPA_LOG_MISSING) {
3719                                         spa->spa_log_state = SPA_LOG_CLEAR;
3720                                         error = 0;
3721                                 }
3722                                 mutex_exit(&spa_namespace_lock);
3723
3724                                 if (!error) {
3725                                         error = spa_open_rewind(target, &spa,
3726                                             FTAG, policy, NULL);
3727                                 }
3728                         }
3729                 } else {
3730                         error = dmu_objset_own(target, DMU_OST_ANY,
3731                             B_TRUE, FTAG, &os);
3732                 }
3733         }
3734         nvlist_free(policy);
3735
3736         if (error)
3737                 fatal("can't open '%s': %s", target, strerror(error));
3738
3739         argv++;
3740         argc--;
3741         if (!dump_opt['R']) {
3742                 if (argc > 0) {
3743                         zopt_objects = argc;
3744                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3745                         for (i = 0; i < zopt_objects; i++) {
3746                                 errno = 0;
3747                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3748                                 if (zopt_object[i] == 0 && errno != 0)
3749                                         fatal("bad number %s: %s",
3750                                             argv[i], strerror(errno));
3751                         }
3752                 }
3753                 if (os != NULL) {
3754                         dump_dir(os);
3755                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3756                         dump_dir(spa->spa_meta_objset);
3757                 } else {
3758                         dump_zpool(spa);
3759                 }
3760         } else {
3761                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3762                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3763                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3764                 flagbits['e'] = ZDB_FLAG_BSWAP;
3765                 flagbits['g'] = ZDB_FLAG_GBH;
3766                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3767                 flagbits['p'] = ZDB_FLAG_PHYS;
3768                 flagbits['r'] = ZDB_FLAG_RAW;
3769
3770                 for (i = 0; i < argc; i++)
3771                         zdb_read_block(argv[i], spa);
3772         }
3773
3774         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3775
3776         fuid_table_destroy();
3777         sa_loaded = B_FALSE;
3778
3779         libzfs_fini(g_zfs);
3780         kernel_fini();
3781
3782         return (0);
3783 }