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

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2016 by Delphix. All rights reserved.
  25  * Copyright (c) 2014 Integros [integros.com]
  26  */
  27
  28 #include <stdio.h>
  29 #include <unistd.h>
  30 #include <stdio_ext.h>
  31 #include <stdlib.h>
  32 #include <ctype.h>
  33 #include <sys/zfs_context.h>
  34 #include <sys/spa.h>
  35 #include <sys/spa_impl.h>
  36 #include <sys/dmu.h>
  37 #include <sys/zap.h>
  38 #include <sys/fs/zfs.h>
  39 #include <sys/zfs_znode.h>
  40 #include <sys/zfs_sa.h>
  41 #include <sys/sa.h>
  42 #include <sys/sa_impl.h>
  43 #include <sys/vdev.h>
  44 #include <sys/vdev_impl.h>
  45 #include <sys/metaslab_impl.h>
  46 #include <sys/dmu_objset.h>
  47 #include <sys/dsl_dir.h>
  48 #include <sys/dsl_dataset.h>
  49 #include <sys/dsl_pool.h>
  50 #include <sys/dbuf.h>
  51 #include <sys/zil.h>
  52 #include <sys/zil_impl.h>
  53 #include <sys/stat.h>
  54 #include <sys/resource.h>
  55 #include <sys/dmu_traverse.h>
  56 #include <sys/zio_checksum.h>
  57 #include <sys/zio_compress.h>
  58 #include <sys/zfs_fuid.h>
  59 #include <sys/arc.h>
  60 #include <sys/ddt.h>
  61 #include <sys/zfeature.h>
  62 #include <zfs_comutil.h>
  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 [-CumMdibcsDvhLXFPAG] [-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, "        -G dump zfs_dbgmsg buffer before "
 182             "exiting\n");
 183         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 184             "to make only that option verbose\n");
 185         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 186         exit(1);
 187 }
 188
 189 static void
 190 dump_debug_buffer()
 191 {
 192         if (dump_opt['G']) {
 193                 (void) printf("\n");
 194                 zfs_dbgmsg_print("zdb");
 195         }
 196 }
 197
 198 /*
 199  * Called for usage errors that are discovered after a call to spa_open(),
 200  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 201  */
 202
 203 static void
 204 fatal(const char *fmt, ...)
 205 {
 206         va_list ap;
 207
 208         va_start(ap, fmt);
 209         (void) fprintf(stderr, "%s: ", cmdname);
 210         (void) vfprintf(stderr, fmt, ap);
 211         va_end(ap);
 212         (void) fprintf(stderr, "\n");
 213
 214         dump_debug_buffer();
 215
 216         exit(1);
 217 }
 218
 219 /* ARGSUSED */
 220 static void
 221 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 222 {
 223         nvlist_t *nv;
 224         size_t nvsize = *(uint64_t *)data;
 225         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 226
 227         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 228
 229         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 230
 231         umem_free(packed, nvsize);
 232
 233         dump_nvlist(nv, 8);
 234
 235         nvlist_free(nv);
 236 }
 237
 238 /* ARGSUSED */
 239 static void
 240 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
 241 {
 242         spa_history_phys_t *shp = data;
 243
 244         if (shp == NULL)
 245                 return;
 246
 247         (void) printf("\t\tpool_create_len = %llu\n",
 248             (u_longlong_t)shp->sh_pool_create_len);
 249         (void) printf("\t\tphys_max_off = %llu\n",
 250             (u_longlong_t)shp->sh_phys_max_off);
 251         (void) printf("\t\tbof = %llu\n",
 252             (u_longlong_t)shp->sh_bof);
 253         (void) printf("\t\teof = %llu\n",
 254             (u_longlong_t)shp->sh_eof);
 255         (void) printf("\t\trecords_lost = %llu\n",
 256             (u_longlong_t)shp->sh_records_lost);
 257 }
 258
 259 static void
 260 zdb_nicenum(uint64_t num, char *buf)
 261 {
 262         if (dump_opt['P'])
 263                 (void) sprintf(buf, "%llu", (longlong_t)num);
 264         else
 265                 nicenum(num, buf);
 266 }
 267
 268 const char histo_stars[] = "****************************************";
 269 const int histo_width = sizeof (histo_stars) - 1;
 270
 271 static void
 272 dump_histogram(const uint64_t *histo, int size, int offset)
 273 {
 274         int i;
 275         int minidx = size - 1;
 276         int maxidx = 0;
 277         uint64_t max = 0;
 278
 279         for (i = 0; i < size; i++) {
 280                 if (histo[i] > max)
 281                         max = histo[i];
 282                 if (histo[i] > 0 && i > maxidx)
 283                         maxidx = i;
 284                 if (histo[i] > 0 && i < minidx)
 285                         minidx = i;
 286         }
 287
 288         if (max < histo_width)
 289                 max = histo_width;
 290
 291         for (i = minidx; i <= maxidx; i++) {
 292                 (void) printf("\t\t\t%3u: %6llu %s\n",
 293                     i + offset, (u_longlong_t)histo[i],
 294                     &histo_stars[(max - histo[i]) * histo_width / max]);
 295         }
 296 }
 297
 298 static void
 299 dump_zap_stats(objset_t *os, uint64_t object)
 300 {
 301         int error;
 302         zap_stats_t zs;
 303
 304         error = zap_get_stats(os, object, &zs);
 305         if (error)
 306                 return;
 307
 308         if (zs.zs_ptrtbl_len == 0) {
 309                 ASSERT(zs.zs_num_blocks == 1);
 310                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 311                     (u_longlong_t)zs.zs_blocksize,
 312                     (u_longlong_t)zs.zs_num_entries);
 313                 return;
 314         }
 315
 316         (void) printf("\tFat ZAP stats:\n");
 317
 318         (void) printf("\t\tPointer table:\n");
 319         (void) printf("\t\t\t%llu elements\n",
 320             (u_longlong_t)zs.zs_ptrtbl_len);
 321         (void) printf("\t\t\tzt_blk: %llu\n",
 322             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 323         (void) printf("\t\t\tzt_numblks: %llu\n",
 324             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 325         (void) printf("\t\t\tzt_shift: %llu\n",
 326             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 327         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 328             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 329         (void) printf("\t\t\tzt_nextblk: %llu\n",
 330             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 331
 332         (void) printf("\t\tZAP entries: %llu\n",
 333             (u_longlong_t)zs.zs_num_entries);
 334         (void) printf("\t\tLeaf blocks: %llu\n",
 335             (u_longlong_t)zs.zs_num_leafs);
 336         (void) printf("\t\tTotal blocks: %llu\n",
 337             (u_longlong_t)zs.zs_num_blocks);
 338         (void) printf("\t\tzap_block_type: 0x%llx\n",
 339             (u_longlong_t)zs.zs_block_type);
 340         (void) printf("\t\tzap_magic: 0x%llx\n",
 341             (u_longlong_t)zs.zs_magic);
 342         (void) printf("\t\tzap_salt: 0x%llx\n",
 343             (u_longlong_t)zs.zs_salt);
 344
 345         (void) printf("\t\tLeafs with 2^n pointers:\n");
 346         dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
 347
 348         (void) printf("\t\tBlocks with n*5 entries:\n");
 349         dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
 350
 351         (void) printf("\t\tBlocks n/10 full:\n");
 352         dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
 353
 354         (void) printf("\t\tEntries with n chunks:\n");
 355         dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
 356
 357         (void) printf("\t\tBuckets with n entries:\n");
 358         dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
 359 }
 360
 361 /*ARGSUSED*/
 362 static void
 363 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 364 {
 365 }
 366
 367 /*ARGSUSED*/
 368 static void
 369 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 370 {
 371         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 372 }
 373
 374 /*ARGSUSED*/
 375 void
 376 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 377 {
 378 }
 379
 380 /*ARGSUSED*/
 381 static void
 382 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 383 {
 384 }
 385
 386 /*ARGSUSED*/
 387 static void
 388 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 389 {
 390         zap_cursor_t zc;
 391         zap_attribute_t attr;
 392         void *prop;
 393         int i;
 394
 395         dump_zap_stats(os, object);
 396         (void) printf("\n");
 397
 398         for (zap_cursor_init(&zc, os, object);
 399             zap_cursor_retrieve(&zc, &attr) == 0;
 400             zap_cursor_advance(&zc)) {
 401                 (void) printf("\t\t%s = ", attr.za_name);
 402                 if (attr.za_num_integers == 0) {
 403                         (void) printf("\n");
 404                         continue;
 405                 }
 406                 prop = umem_zalloc(attr.za_num_integers *
 407                     attr.za_integer_length, UMEM_NOFAIL);
 408                 (void) zap_lookup(os, object, attr.za_name,
 409                     attr.za_integer_length, attr.za_num_integers, prop);
 410                 if (attr.za_integer_length == 1) {
 411                         (void) printf("%s", (char *)prop);
 412                 } else {
 413                         for (i = 0; i < attr.za_num_integers; i++) {
 414                                 switch (attr.za_integer_length) {
 415                                 case 2:
 416                                         (void) printf("%u ",
 417                                             ((uint16_t *)prop)[i]);
 418                                         break;
 419                                 case 4:
 420                                         (void) printf("%u ",
 421                                             ((uint32_t *)prop)[i]);
 422                                         break;
 423                                 case 8:
 424                                         (void) printf("%lld ",
 425                                             (u_longlong_t)((int64_t *)prop)[i]);
 426                                         break;
 427                                 }
 428                         }
 429                 }
 430                 (void) printf("\n");
 431                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 432         }
 433         zap_cursor_fini(&zc);
 434 }
 435
 436 static void
 437 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size)
 438 {
 439         bpobj_phys_t *bpop = data;
 440         char bytes[32], comp[32], uncomp[32];
 441
 442         if (bpop == NULL)
 443                 return;
 444
 445         zdb_nicenum(bpop->bpo_bytes, bytes);
 446         zdb_nicenum(bpop->bpo_comp, comp);
 447         zdb_nicenum(bpop->bpo_uncomp, uncomp);
 448
 449         (void) printf("\t\tnum_blkptrs = %llu\n",
 450             (u_longlong_t)bpop->bpo_num_blkptrs);
 451         (void) printf("\t\tbytes = %s\n", bytes);
 452         if (size >= BPOBJ_SIZE_V1) {
 453                 (void) printf("\t\tcomp = %s\n", comp);
 454                 (void) printf("\t\tuncomp = %s\n", uncomp);
 455         }
 456         if (size >= sizeof (*bpop)) {
 457                 (void) printf("\t\tsubobjs = %llu\n",
 458                     (u_longlong_t)bpop->bpo_subobjs);
 459                 (void) printf("\t\tnum_subobjs = %llu\n",
 460                     (u_longlong_t)bpop->bpo_num_subobjs);
 461         }
 462
 463         if (dump_opt['d'] < 5)
 464                 return;
 465
 466         for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) {
 467                 char blkbuf[BP_SPRINTF_LEN];
 468                 blkptr_t bp;
 469
 470                 int err = dmu_read(os, object,
 471                     i * sizeof (bp), sizeof (bp), &bp, 0);
 472                 if (err != 0) {
 473                         (void) printf("got error %u from dmu_read\n", err);
 474                         break;
 475                 }
 476                 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp);
 477                 (void) printf("\t%s\n", blkbuf);
 478         }
 479 }
 480
 481 /* ARGSUSED */
 482 static void
 483 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size)
 484 {
 485         dmu_object_info_t doi;
 486
 487         VERIFY0(dmu_object_info(os, object, &doi));
 488         uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP);
 489
 490         int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0);
 491         if (err != 0) {
 492                 (void) printf("got error %u from dmu_read\n", err);
 493                 kmem_free(subobjs, doi.doi_max_offset);
 494                 return;
 495         }
 496
 497         int64_t last_nonzero = -1;
 498         for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) {
 499                 if (subobjs[i] != 0)
 500                         last_nonzero = i;
 501         }
 502
 503         for (int64_t i = 0; i <= last_nonzero; i++) {
 504                 (void) printf("\t%llu\n", (longlong_t)subobjs[i]);
 505         }
 506         kmem_free(subobjs, doi.doi_max_offset);
 507 }
 508
 509 /*ARGSUSED*/
 510 static void
 511 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 512 {
 513         dump_zap_stats(os, object);
 514         /* contents are printed elsewhere, properly decoded */
 515 }
 516
 517 /*ARGSUSED*/
 518 static void
 519 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 520 {
 521         zap_cursor_t zc;
 522         zap_attribute_t attr;
 523
 524         dump_zap_stats(os, object);
 525         (void) printf("\n");
 526
 527         for (zap_cursor_init(&zc, os, object);
 528             zap_cursor_retrieve(&zc, &attr) == 0;
 529             zap_cursor_advance(&zc)) {
 530                 (void) printf("\t\t%s = ", attr.za_name);
 531                 if (attr.za_num_integers == 0) {
 532                         (void) printf("\n");
 533                         continue;
 534                 }
 535                 (void) printf(" %llx : [%d:%d:%d]\n",
 536                     (u_longlong_t)attr.za_first_integer,
 537                     (int)ATTR_LENGTH(attr.za_first_integer),
 538                     (int)ATTR_BSWAP(attr.za_first_integer),
 539                     (int)ATTR_NUM(attr.za_first_integer));
 540         }
 541         zap_cursor_fini(&zc);
 542 }
 543
 544 /*ARGSUSED*/
 545 static void
 546 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 547 {
 548         zap_cursor_t zc;
 549         zap_attribute_t attr;
 550         uint16_t *layout_attrs;
 551         int i;
 552
 553         dump_zap_stats(os, object);
 554         (void) printf("\n");
 555
 556         for (zap_cursor_init(&zc, os, object);
 557             zap_cursor_retrieve(&zc, &attr) == 0;
 558             zap_cursor_advance(&zc)) {
 559                 (void) printf("\t\t%s = [", attr.za_name);
 560                 if (attr.za_num_integers == 0) {
 561                         (void) printf("\n");
 562                         continue;
 563                 }
 564
 565                 VERIFY(attr.za_integer_length == 2);
 566                 layout_attrs = umem_zalloc(attr.za_num_integers *
 567                     attr.za_integer_length, UMEM_NOFAIL);
 568
 569                 VERIFY(zap_lookup(os, object, attr.za_name,
 570                     attr.za_integer_length,
 571                     attr.za_num_integers, layout_attrs) == 0);
 572
 573                 for (i = 0; i != attr.za_num_integers; i++)
 574                         (void) printf(" %d ", (int)layout_attrs[i]);
 575                 (void) printf("]\n");
 576                 umem_free(layout_attrs,
 577                     attr.za_num_integers * attr.za_integer_length);
 578         }
 579         zap_cursor_fini(&zc);
 580 }
 581
 582 /*ARGSUSED*/
 583 static void
 584 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 585 {
 586         zap_cursor_t zc;
 587         zap_attribute_t attr;
 588         const char *typenames[] = {
 589                 /* 0 */ "not specified",
 590                 /* 1 */ "FIFO",
 591                 /* 2 */ "Character Device",
 592                 /* 3 */ "3 (invalid)",
 593                 /* 4 */ "Directory",
 594                 /* 5 */ "5 (invalid)",
 595                 /* 6 */ "Block Device",
 596                 /* 7 */ "7 (invalid)",
 597                 /* 8 */ "Regular File",
 598                 /* 9 */ "9 (invalid)",
 599                 /* 10 */ "Symbolic Link",
 600                 /* 11 */ "11 (invalid)",
 601                 /* 12 */ "Socket",
 602                 /* 13 */ "Door",
 603                 /* 14 */ "Event Port",
 604                 /* 15 */ "15 (invalid)",
 605         };
 606
 607         dump_zap_stats(os, object);
 608         (void) printf("\n");
 609
 610         for (zap_cursor_init(&zc, os, object);
 611             zap_cursor_retrieve(&zc, &attr) == 0;
 612             zap_cursor_advance(&zc)) {
 613                 (void) printf("\t\t%s = %lld (type: %s)\n",
 614                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 615                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 616         }
 617         zap_cursor_fini(&zc);
 618 }
 619
 620 int
 621 get_dtl_refcount(vdev_t *vd)
 622 {
 623         int refcount = 0;
 624
 625         if (vd->vdev_ops->vdev_op_leaf) {
 626                 space_map_t *sm = vd->vdev_dtl_sm;
 627
 628                 if (sm != NULL &&
 629                     sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 630                         return (1);
 631                 return (0);
 632         }
 633
 634         for (int c = 0; c < vd->vdev_children; c++)
 635                 refcount += get_dtl_refcount(vd->vdev_child[c]);
 636         return (refcount);
 637 }
 638
 639 int
 640 get_metaslab_refcount(vdev_t *vd)
 641 {
 642         int refcount = 0;
 643
 644         if (vd->vdev_top == vd && !vd->vdev_removing) {
 645                 for (int m = 0; m < vd->vdev_ms_count; m++) {
 646                         space_map_t *sm = vd->vdev_ms[m]->ms_sm;
 647
 648                         if (sm != NULL &&
 649                             sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 650                                 refcount++;
 651                 }
 652         }
 653         for (int c = 0; c < vd->vdev_children; c++)
 654                 refcount += get_metaslab_refcount(vd->vdev_child[c]);
 655
 656         return (refcount);
 657 }
 658
 659 static int
 660 verify_spacemap_refcounts(spa_t *spa)
 661 {
 662         uint64_t expected_refcount = 0;
 663         uint64_t actual_refcount;
 664
 665         (void) feature_get_refcount(spa,
 666             &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
 667             &expected_refcount);
 668         actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
 669         actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
 670
 671         if (expected_refcount != actual_refcount) {
 672                 (void) printf("space map refcount mismatch: expected %lld != "
 673                     "actual %lld\n",
 674                     (longlong_t)expected_refcount,
 675                     (longlong_t)actual_refcount);
 676                 return (2);
 677         }
 678         return (0);
 679 }
 680
 681 static void
 682 dump_spacemap(objset_t *os, space_map_t *sm)
 683 {
 684         uint64_t alloc, offset, entry;
 685         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 686                             "INVALID", "INVALID", "INVALID", "INVALID" };
 687
 688         if (sm == NULL)
 689                 return;
 690
 691         /*
 692          * Print out the freelist entries in both encoded and decoded form.
 693          */
 694         alloc = 0;
 695         for (offset = 0; offset < space_map_length(sm);
 696             offset += sizeof (entry)) {
 697                 uint8_t mapshift = sm->sm_shift;
 698
 699                 VERIFY0(dmu_read(os, space_map_object(sm), offset,
 700                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 701                 if (SM_DEBUG_DECODE(entry)) {
 702
 703                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 704                             (u_longlong_t)(offset / sizeof (entry)),
 705                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 706                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 707                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 708                 } else {
 709                         (void) printf("\t    [%6llu]    %c  range:"
 710                             " %010llx-%010llx  size: %06llx\n",
 711                             (u_longlong_t)(offset / sizeof (entry)),
 712                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 713                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 714                             mapshift) + sm->sm_start),
 715                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 716                             mapshift) + sm->sm_start +
 717                             (SM_RUN_DECODE(entry) << mapshift)),
 718                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 719                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 720                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 721                         else
 722                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 723                 }
 724         }
 725         if (alloc != space_map_allocated(sm)) {
 726                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 727                     "with space map summary (%llu)\n",
 728                     (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
 729         }
 730 }
 731
 732 static void
 733 dump_metaslab_stats(metaslab_t *msp)
 734 {
 735         char maxbuf[32];
 736         range_tree_t *rt = msp->ms_tree;
 737         avl_tree_t *t = &msp->ms_size_tree;
 738         int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
 739
 740         zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
 741
 742         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 743             "segments", avl_numnodes(t), "maxsize", maxbuf,
 744             "freepct", free_pct);
 745         (void) printf("\tIn-memory histogram:\n");
 746         dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 747 }
 748
 749 static void
 750 dump_metaslab(metaslab_t *msp)
 751 {
 752         vdev_t *vd = msp->ms_group->mg_vd;
 753         spa_t *spa = vd->vdev_spa;
 754         space_map_t *sm = msp->ms_sm;
 755         char freebuf[32];
 756
 757         zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
 758
 759         (void) printf(
 760             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 761             (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
 762             (u_longlong_t)space_map_object(sm), freebuf);
 763
 764         if (dump_opt['m'] > 2 && !dump_opt['L']) {
 765                 mutex_enter(&msp->ms_lock);
 766                 metaslab_load_wait(msp);
 767                 if (!msp->ms_loaded) {
 768                         VERIFY0(metaslab_load(msp));
 769                         range_tree_stat_verify(msp->ms_tree);
 770                 }
 771                 dump_metaslab_stats(msp);
 772                 metaslab_unload(msp);
 773                 mutex_exit(&msp->ms_lock);
 774         }
 775
 776         if (dump_opt['m'] > 1 && sm != NULL &&
 777             spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
 778                 /*
 779                  * The space map histogram represents free space in chunks
 780                  * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
 781                  */
 782                 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
 783                     (u_longlong_t)msp->ms_fragmentation);
 784                 dump_histogram(sm->sm_phys->smp_histogram,
 785                     SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
 786         }
 787
 788         if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
 789                 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
 790
 791                 mutex_enter(&msp->ms_lock);
 792                 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
 793                 mutex_exit(&msp->ms_lock);
 794         }
 795 }
 796
 797 static void
 798 print_vdev_metaslab_header(vdev_t *vd)
 799 {
 800         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 801             (u_longlong_t)vd->vdev_id,
 802             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 803             "offset", "spacemap", "free");
 804         (void) printf("\t%15s   %19s   %15s   %10s\n",
 805             "---------------", "-------------------",
 806             "---------------", "-------------");
 807 }
 808
 809 static void
 810 dump_metaslab_groups(spa_t *spa)
 811 {
 812         vdev_t *rvd = spa->spa_root_vdev;
 813         metaslab_class_t *mc = spa_normal_class(spa);
 814         uint64_t fragmentation;
 815
 816         metaslab_class_histogram_verify(mc);
 817
 818         for (int c = 0; c < rvd->vdev_children; c++) {
 819                 vdev_t *tvd = rvd->vdev_child[c];
 820                 metaslab_group_t *mg = tvd->vdev_mg;
 821
 822                 if (mg->mg_class != mc)
 823                         continue;
 824
 825                 metaslab_group_histogram_verify(mg);
 826                 mg->mg_fragmentation = metaslab_group_fragmentation(mg);
 827
 828                 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
 829                     "fragmentation",
 830                     (u_longlong_t)tvd->vdev_id,
 831                     (u_longlong_t)tvd->vdev_ms_count);
 832                 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
 833                         (void) printf("%3s\n", "-");
 834                 } else {
 835                         (void) printf("%3llu%%\n",
 836                             (u_longlong_t)mg->mg_fragmentation);
 837                 }
 838                 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 839         }
 840
 841         (void) printf("\tpool %s\tfragmentation", spa_name(spa));
 842         fragmentation = metaslab_class_fragmentation(mc);
 843         if (fragmentation == ZFS_FRAG_INVALID)
 844                 (void) printf("\t%3s\n", "-");
 845         else
 846                 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
 847         dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 848 }
 849
 850 static void
 851 dump_metaslabs(spa_t *spa)
 852 {
 853         vdev_t *vd, *rvd = spa->spa_root_vdev;
 854         uint64_t m, c = 0, children = rvd->vdev_children;
 855
 856         (void) printf("\nMetaslabs:\n");
 857
 858         if (!dump_opt['d'] && zopt_objects > 0) {
 859                 c = zopt_object[0];
 860
 861                 if (c >= children)
 862                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 863
 864                 if (zopt_objects > 1) {
 865                         vd = rvd->vdev_child[c];
 866                         print_vdev_metaslab_header(vd);
 867
 868                         for (m = 1; m < zopt_objects; m++) {
 869                                 if (zopt_object[m] < vd->vdev_ms_count)
 870                                         dump_metaslab(
 871                                             vd->vdev_ms[zopt_object[m]]);
 872                                 else
 873                                         (void) fprintf(stderr, "bad metaslab "
 874                                             "number %llu\n",
 875                                             (u_longlong_t)zopt_object[m]);
 876                         }
 877                         (void) printf("\n");
 878                         return;
 879                 }
 880                 children = c + 1;
 881         }
 882         for (; c < children; c++) {
 883                 vd = rvd->vdev_child[c];
 884                 print_vdev_metaslab_header(vd);
 885
 886                 for (m = 0; m < vd->vdev_ms_count; m++)
 887                         dump_metaslab(vd->vdev_ms[m]);
 888                 (void) printf("\n");
 889         }
 890 }
 891
 892 static void
 893 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 894 {
 895         const ddt_phys_t *ddp = dde->dde_phys;
 896         const ddt_key_t *ddk = &dde->dde_key;
 897         char *types[4] = { "ditto", "single", "double", "triple" };
 898         char blkbuf[BP_SPRINTF_LEN];
 899         blkptr_t blk;
 900
 901         for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 902                 if (ddp->ddp_phys_birth == 0)
 903                         continue;
 904                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 905                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
 906                 (void) printf("index %llx refcnt %llu %s %s\n",
 907                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 908                     types[p], blkbuf);
 909         }
 910 }
 911
 912 static void
 913 dump_dedup_ratio(const ddt_stat_t *dds)
 914 {
 915         double rL, rP, rD, D, dedup, compress, copies;
 916
 917         if (dds->dds_blocks == 0)
 918                 return;
 919
 920         rL = (double)dds->dds_ref_lsize;
 921         rP = (double)dds->dds_ref_psize;
 922         rD = (double)dds->dds_ref_dsize;
 923         D = (double)dds->dds_dsize;
 924
 925         dedup = rD / D;
 926         compress = rL / rP;
 927         copies = rD / rP;
 928
 929         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 930             "dedup * compress / copies = %.2f\n\n",
 931             dedup, compress, copies, dedup * compress / copies);
 932 }
 933
 934 static void
 935 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 936 {
 937         char name[DDT_NAMELEN];
 938         ddt_entry_t dde;
 939         uint64_t walk = 0;
 940         dmu_object_info_t doi;
 941         uint64_t count, dspace, mspace;
 942         int error;
 943
 944         error = ddt_object_info(ddt, type, class, &doi);
 945
 946         if (error == ENOENT)
 947                 return;
 948         ASSERT(error == 0);
 949
 950         error = ddt_object_count(ddt, type, class, &count);
 951         ASSERT(error == 0);
 952         if (count == 0)
 953                 return;
 954
 955         dspace = doi.doi_physical_blocks_512 << 9;
 956         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 957
 958         ddt_object_name(ddt, type, class, name);
 959
 960         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 961             name,
 962             (u_longlong_t)count,
 963             (u_longlong_t)(dspace / count),
 964             (u_longlong_t)(mspace / count));
 965
 966         if (dump_opt['D'] < 3)
 967                 return;
 968
 969         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 970
 971         if (dump_opt['D'] < 4)
 972                 return;
 973
 974         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 975                 return;
 976
 977         (void) printf("%s contents:\n\n", name);
 978
 979         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 980                 dump_dde(ddt, &dde, walk);
 981
 982         ASSERT(error == ENOENT);
 983
 984         (void) printf("\n");
 985 }
 986
 987 static void
 988 dump_all_ddts(spa_t *spa)
 989 {
 990         ddt_histogram_t ddh_total = { 0 };
 991         ddt_stat_t dds_total = { 0 };
 992
 993         for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
 994                 ddt_t *ddt = spa->spa_ddt[c];
 995                 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
 996                         for (enum ddt_class class = 0; class < DDT_CLASSES;
 997                             class++) {
 998                                 dump_ddt(ddt, type, class);
 999                         }
1000                 }
1001         }
1002
1003         ddt_get_dedup_stats(spa, &dds_total);
1004
1005         if (dds_total.dds_blocks == 0) {
1006                 (void) printf("All DDTs are empty\n");
1007                 return;
1008         }
1009
1010         (void) printf("\n");
1011
1012         if (dump_opt['D'] > 1) {
1013                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
1014                 ddt_get_dedup_histogram(spa, &ddh_total);
1015                 zpool_dump_ddt(&dds_total, &ddh_total);
1016         }
1017
1018         dump_dedup_ratio(&dds_total);
1019 }
1020
1021 static void
1022 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
1023 {
1024         char *prefix = arg;
1025
1026         (void) printf("%s [%llu,%llu) length %llu\n",
1027             prefix,
1028             (u_longlong_t)start,
1029             (u_longlong_t)(start + size),
1030             (u_longlong_t)(size));
1031 }
1032
1033 static void
1034 dump_dtl(vdev_t *vd, int indent)
1035 {
1036         spa_t *spa = vd->vdev_spa;
1037         boolean_t required;
1038         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
1039         char prefix[256];
1040
1041         spa_vdev_state_enter(spa, SCL_NONE);
1042         required = vdev_dtl_required(vd);
1043         (void) spa_vdev_state_exit(spa, NULL, 0);
1044
1045         if (indent == 0)
1046                 (void) printf("\nDirty time logs:\n\n");
1047
1048         (void) printf("\t%*s%s [%s]\n", indent, "",
1049             vd->vdev_path ? vd->vdev_path :
1050             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
1051             required ? "DTL-required" : "DTL-expendable");
1052
1053         for (int t = 0; t < DTL_TYPES; t++) {
1054                 range_tree_t *rt = vd->vdev_dtl[t];
1055                 if (range_tree_space(rt) == 0)
1056                         continue;
1057                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
1058                     indent + 2, "", name[t]);
1059                 mutex_enter(rt->rt_lock);
1060                 range_tree_walk(rt, dump_dtl_seg, prefix);
1061                 mutex_exit(rt->rt_lock);
1062                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
1063                         dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
1064         }
1065
1066         for (int c = 0; c < vd->vdev_children; c++)
1067                 dump_dtl(vd->vdev_child[c], indent + 4);
1068 }
1069
1070 /* from spa_history.c: spa_history_create_obj() */
1071 #define HIS_BUF_LEN_DEF (128 << 10)
1072 #define HIS_BUF_LEN_MAX (1 << 30)
1073
1074 static void
1075 dump_history(spa_t *spa)
1076 {
1077         nvlist_t **events = NULL;
1078         char *buf = NULL;
1079         uint64_t bufsize = HIS_BUF_LEN_DEF;
1080         uint64_t resid, len, off = 0;
1081         uint_t num = 0;
1082         int error;
1083         time_t tsec;
1084         struct tm t;
1085         char tbuf[30];
1086         char internalstr[MAXPATHLEN];
1087
1088         if ((buf = malloc(bufsize)) == NULL)
1089                 (void) fprintf(stderr, "Unable to read history: "
1090                     "out of memory\n");
1091         do {
1092                 len = bufsize;
1093
1094                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
1095                         (void) fprintf(stderr, "Unable to read history: "
1096                             "error %d\n", error);
1097                         return;
1098                 }
1099
1100                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1101                         break;
1102                 off -= resid;
1103
1104                 /*
1105                  * If the history block is too big, double the buffer
1106                  * size and try again.
1107                  */
1108                 if (resid == len) {
1109                         free(buf);
1110                         buf = NULL;
1111
1112                         bufsize <<= 1;
1113                         if ((bufsize >= HIS_BUF_LEN_MAX) ||
1114                             ((buf = malloc(bufsize)) == NULL)) {
1115                                 (void) fprintf(stderr, "Unable to read history: "
1116                                     "out of memory\n");
1117                                 return;
1118                         }
1119                 }
1120         } while (len != 0);
1121         free(buf);
1122
1123         (void) printf("\nHistory:\n");
1124         for (int i = 0; i < num; i++) {
1125                 uint64_t time, txg, ievent;
1126                 char *cmd, *intstr;
1127                 boolean_t printed = B_FALSE;
1128
1129                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
1130                     &time) != 0)
1131                         goto next;
1132                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
1133                     &cmd) != 0) {
1134                         if (nvlist_lookup_uint64(events[i],
1135                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1136                                 goto next;
1137                         verify(nvlist_lookup_uint64(events[i],
1138                             ZPOOL_HIST_TXG, &txg) == 0);
1139                         verify(nvlist_lookup_string(events[i],
1140                             ZPOOL_HIST_INT_STR, &intstr) == 0);
1141                         if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1142                                 goto next;
1143
1144                         (void) snprintf(internalstr,
1145                             sizeof (internalstr),
1146                             "[internal %s txg:%lld] %s",
1147                             zfs_history_event_names[ievent], txg,
1148                             intstr);
1149                         cmd = internalstr;
1150                 }
1151                 tsec = time;
1152                 (void) localtime_r(&tsec, &t);
1153                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1154                 (void) printf("%s %s\n", tbuf, cmd);
1155                 printed = B_TRUE;
1156
1157 next:
1158                 if (dump_opt['h'] > 1) {
1159                         if (!printed)
1160                                 (void) printf("unrecognized record:\n");
1161                         dump_nvlist(events[i], 2);
1162                 }
1163         }
1164 }
1165
1166 /*ARGSUSED*/
1167 static void
1168 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1169 {
1170 }
1171
1172 static uint64_t
1173 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1174     const zbookmark_phys_t *zb)
1175 {
1176         if (dnp == NULL) {
1177                 ASSERT(zb->zb_level < 0);
1178                 if (zb->zb_object == 0)
1179                         return (zb->zb_blkid);
1180                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1181         }
1182
1183         ASSERT(zb->zb_level >= 0);
1184
1185         return ((zb->zb_blkid <<
1186             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1187             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1188 }
1189
1190 static void
1191 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1192 {
1193         const dva_t *dva = bp->blk_dva;
1194         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1195
1196         if (dump_opt['b'] >= 6) {
1197                 snprintf_blkptr(blkbuf, buflen, bp);
1198                 return;
1199         }
1200
1201         if (BP_IS_EMBEDDED(bp)) {
1202                 (void) sprintf(blkbuf,
1203                     "EMBEDDED et=%u %llxL/%llxP B=%llu",
1204                     (int)BPE_GET_ETYPE(bp),
1205                     (u_longlong_t)BPE_GET_LSIZE(bp),
1206                     (u_longlong_t)BPE_GET_PSIZE(bp),
1207                     (u_longlong_t)bp->blk_birth);
1208                 return;
1209         }
1210
1211         blkbuf[0] = '\0';
1212         for (int i = 0; i < ndvas; i++)
1213                 (void) snprintf(blkbuf + strlen(blkbuf),
1214                     buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1215                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1216                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1217                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1218
1219         if (BP_IS_HOLE(bp)) {
1220                 (void) snprintf(blkbuf + strlen(blkbuf),
1221                     buflen - strlen(blkbuf),
1222                     "%llxL B=%llu",
1223                     (u_longlong_t)BP_GET_LSIZE(bp),
1224                     (u_longlong_t)bp->blk_birth);
1225         } else {
1226                 (void) snprintf(blkbuf + strlen(blkbuf),
1227                     buflen - strlen(blkbuf),
1228                     "%llxL/%llxP F=%llu B=%llu/%llu",
1229                     (u_longlong_t)BP_GET_LSIZE(bp),
1230                     (u_longlong_t)BP_GET_PSIZE(bp),
1231                     (u_longlong_t)BP_GET_FILL(bp),
1232                     (u_longlong_t)bp->blk_birth,
1233                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1234         }
1235 }
1236
1237 static void
1238 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1239     const dnode_phys_t *dnp)
1240 {
1241         char blkbuf[BP_SPRINTF_LEN];
1242         int l;
1243
1244         if (!BP_IS_EMBEDDED(bp)) {
1245                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1246                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1247         }
1248
1249         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1250
1251         ASSERT(zb->zb_level >= 0);
1252
1253         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1254                 if (l == zb->zb_level) {
1255                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1256                 } else {
1257                         (void) printf(" ");
1258                 }
1259         }
1260
1261         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1262         (void) printf("%s\n", blkbuf);
1263 }
1264
1265 static int
1266 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1267     blkptr_t *bp, const zbookmark_phys_t *zb)
1268 {
1269         int err = 0;
1270
1271         if (bp->blk_birth == 0)
1272                 return (0);
1273
1274         print_indirect(bp, zb, dnp);
1275
1276         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1277                 arc_flags_t flags = ARC_FLAG_WAIT;
1278                 int i;
1279                 blkptr_t *cbp;
1280                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1281                 arc_buf_t *buf;
1282                 uint64_t fill = 0;
1283
1284                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1285                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1286                 if (err)
1287                         return (err);
1288                 ASSERT(buf->b_data);
1289
1290                 /* recursively visit blocks below this */
1291                 cbp = buf->b_data;
1292                 for (i = 0; i < epb; i++, cbp++) {
1293                         zbookmark_phys_t czb;
1294
1295                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1296                             zb->zb_level - 1,
1297                             zb->zb_blkid * epb + i);
1298                         err = visit_indirect(spa, dnp, cbp, &czb);
1299                         if (err)
1300                                 break;
1301                         fill += BP_GET_FILL(cbp);
1302                 }
1303                 if (!err)
1304                         ASSERT3U(fill, ==, BP_GET_FILL(bp));
1305                 arc_buf_destroy(buf, &buf);
1306         }
1307
1308         return (err);
1309 }
1310
1311 /*ARGSUSED*/
1312 static void
1313 dump_indirect(dnode_t *dn)
1314 {
1315         dnode_phys_t *dnp = dn->dn_phys;
1316         int j;
1317         zbookmark_phys_t czb;
1318
1319         (void) printf("Indirect blocks:\n");
1320
1321         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1322             dn->dn_object, dnp->dn_nlevels - 1, 0);
1323         for (j = 0; j < dnp->dn_nblkptr; j++) {
1324                 czb.zb_blkid = j;
1325                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1326                     &dnp->dn_blkptr[j], &czb);
1327         }
1328
1329         (void) printf("\n");
1330 }
1331
1332 /*ARGSUSED*/
1333 static void
1334 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1335 {
1336         dsl_dir_phys_t *dd = data;
1337         time_t crtime;
1338         char nice[32];
1339
1340         if (dd == NULL)
1341                 return;
1342
1343         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1344
1345         crtime = dd->dd_creation_time;
1346         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1347         (void) printf("\t\thead_dataset_obj = %llu\n",
1348             (u_longlong_t)dd->dd_head_dataset_obj);
1349         (void) printf("\t\tparent_dir_obj = %llu\n",
1350             (u_longlong_t)dd->dd_parent_obj);
1351         (void) printf("\t\torigin_obj = %llu\n",
1352             (u_longlong_t)dd->dd_origin_obj);
1353         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1354             (u_longlong_t)dd->dd_child_dir_zapobj);
1355         zdb_nicenum(dd->dd_used_bytes, nice);
1356         (void) printf("\t\tused_bytes = %s\n", nice);
1357         zdb_nicenum(dd->dd_compressed_bytes, nice);
1358         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1359         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1360         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1361         zdb_nicenum(dd->dd_quota, nice);
1362         (void) printf("\t\tquota = %s\n", nice);
1363         zdb_nicenum(dd->dd_reserved, nice);
1364         (void) printf("\t\treserved = %s\n", nice);
1365         (void) printf("\t\tprops_zapobj = %llu\n",
1366             (u_longlong_t)dd->dd_props_zapobj);
1367         (void) printf("\t\tdeleg_zapobj = %llu\n",
1368             (u_longlong_t)dd->dd_deleg_zapobj);
1369         (void) printf("\t\tflags = %llx\n",
1370             (u_longlong_t)dd->dd_flags);
1371
1372 #define DO(which) \
1373         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1374         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1375         DO(HEAD);
1376         DO(SNAP);
1377         DO(CHILD);
1378         DO(CHILD_RSRV);
1379         DO(REFRSRV);
1380 #undef DO
1381 }
1382
1383 /*ARGSUSED*/
1384 static void
1385 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1386 {
1387         dsl_dataset_phys_t *ds = data;
1388         time_t crtime;
1389         char used[32], compressed[32], uncompressed[32], unique[32];
1390         char blkbuf[BP_SPRINTF_LEN];
1391
1392         if (ds == NULL)
1393                 return;
1394
1395         ASSERT(size == sizeof (*ds));
1396         crtime = ds->ds_creation_time;
1397         zdb_nicenum(ds->ds_referenced_bytes, used);
1398         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1399         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1400         zdb_nicenum(ds->ds_unique_bytes, unique);
1401         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1402
1403         (void) printf("\t\tdir_obj = %llu\n",
1404             (u_longlong_t)ds->ds_dir_obj);
1405         (void) printf("\t\tprev_snap_obj = %llu\n",
1406             (u_longlong_t)ds->ds_prev_snap_obj);
1407         (void) printf("\t\tprev_snap_txg = %llu\n",
1408             (u_longlong_t)ds->ds_prev_snap_txg);
1409         (void) printf("\t\tnext_snap_obj = %llu\n",
1410             (u_longlong_t)ds->ds_next_snap_obj);
1411         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1412             (u_longlong_t)ds->ds_snapnames_zapobj);
1413         (void) printf("\t\tnum_children = %llu\n",
1414             (u_longlong_t)ds->ds_num_children);
1415         (void) printf("\t\tuserrefs_obj = %llu\n",
1416             (u_longlong_t)ds->ds_userrefs_obj);
1417         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1418         (void) printf("\t\tcreation_txg = %llu\n",
1419             (u_longlong_t)ds->ds_creation_txg);
1420         (void) printf("\t\tdeadlist_obj = %llu\n",
1421             (u_longlong_t)ds->ds_deadlist_obj);
1422         (void) printf("\t\tused_bytes = %s\n", used);
1423         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1424         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1425         (void) printf("\t\tunique = %s\n", unique);
1426         (void) printf("\t\tfsid_guid = %llu\n",
1427             (u_longlong_t)ds->ds_fsid_guid);
1428         (void) printf("\t\tguid = %llu\n",
1429             (u_longlong_t)ds->ds_guid);
1430         (void) printf("\t\tflags = %llx\n",
1431             (u_longlong_t)ds->ds_flags);
1432         (void) printf("\t\tnext_clones_obj = %llu\n",
1433             (u_longlong_t)ds->ds_next_clones_obj);
1434         (void) printf("\t\tprops_obj = %llu\n",
1435             (u_longlong_t)ds->ds_props_obj);
1436         (void) printf("\t\tbp = %s\n", blkbuf);
1437 }
1438
1439 /* ARGSUSED */
1440 static int
1441 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1442 {
1443         char blkbuf[BP_SPRINTF_LEN];
1444
1445         if (bp->blk_birth != 0) {
1446                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1447                 (void) printf("\t%s\n", blkbuf);
1448         }
1449         return (0);
1450 }
1451
1452 static void
1453 dump_bptree(objset_t *os, uint64_t obj, char *name)
1454 {
1455         char bytes[32];
1456         bptree_phys_t *bt;
1457         dmu_buf_t *db;
1458
1459         if (dump_opt['d'] < 3)
1460                 return;
1461
1462         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1463         bt = db->db_data;
1464         zdb_nicenum(bt->bt_bytes, bytes);
1465         (void) printf("\n    %s: %llu datasets, %s\n",
1466             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1467         dmu_buf_rele(db, FTAG);
1468
1469         if (dump_opt['d'] < 5)
1470                 return;
1471
1472         (void) printf("\n");
1473
1474         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1475 }
1476
1477 /* ARGSUSED */
1478 static int
1479 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1480 {
1481         char blkbuf[BP_SPRINTF_LEN];
1482
1483         ASSERT(bp->blk_birth != 0);
1484         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1485         (void) printf("\t%s\n", blkbuf);
1486         return (0);
1487 }
1488
1489 static void
1490 dump_full_bpobj(bpobj_t *bpo, char *name, int indent)
1491 {
1492         char bytes[32];
1493         char comp[32];
1494         char uncomp[32];
1495
1496         if (dump_opt['d'] < 3)
1497                 return;
1498
1499         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1500         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1501                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1502                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1503                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1504                     "%llu subobjs in object %llu, %s (%s/%s comp)\n",
1505                     indent * 8, name,
1506                     (u_longlong_t)bpo->bpo_object,
1507                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1508                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1509                     (u_longlong_t)bpo->bpo_phys->bpo_subobjs,
1510                     bytes, comp, uncomp);
1511
1512                 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1513                         uint64_t subobj;
1514                         bpobj_t subbpo;
1515                         int error;
1516                         VERIFY0(dmu_read(bpo->bpo_os,
1517                             bpo->bpo_phys->bpo_subobjs,
1518                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1519                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1520                         if (error != 0) {
1521                                 (void) printf("ERROR %u while trying to open "
1522                                     "subobj id %llu\n",
1523                                     error, (u_longlong_t)subobj);
1524                                 continue;
1525                         }
1526                         dump_full_bpobj(&subbpo, "subobj", indent + 1);
1527                         bpobj_close(&subbpo);
1528                 }
1529         } else {
1530                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1531                     indent * 8, name,
1532                     (u_longlong_t)bpo->bpo_object,
1533                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1534                     bytes);
1535         }
1536
1537         if (dump_opt['d'] < 5)
1538                 return;
1539
1540
1541         if (indent == 0) {
1542                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1543                 (void) printf("\n");
1544         }
1545 }
1546
1547 static void
1548 dump_deadlist(dsl_deadlist_t *dl)
1549 {
1550         dsl_deadlist_entry_t *dle;
1551         uint64_t unused;
1552         char bytes[32];
1553         char comp[32];
1554         char uncomp[32];
1555
1556         if (dump_opt['d'] < 3)
1557                 return;
1558
1559         if (dl->dl_oldfmt) {
1560                 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1561                 return;
1562         }
1563
1564         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1565         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1566         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1567         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1568             bytes, comp, uncomp);
1569
1570         if (dump_opt['d'] < 4)
1571                 return;
1572
1573         (void) printf("\n");
1574
1575         /* force the tree to be loaded */
1576         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1577
1578         for (dle = avl_first(&dl->dl_tree); dle;
1579             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1580                 if (dump_opt['d'] >= 5) {
1581                         char buf[128];
1582                         (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1583                             (longlong_t)dle->dle_mintxg,
1584                             (longlong_t)dle->dle_bpobj.bpo_object);
1585                         dump_full_bpobj(&dle->dle_bpobj, buf, 0);
1586                 } else {
1587                         (void) printf("mintxg %llu -> obj %llu\n",
1588                             (longlong_t)dle->dle_mintxg,
1589                             (longlong_t)dle->dle_bpobj.bpo_object);
1590
1591                 }
1592         }
1593 }
1594
1595 static avl_tree_t idx_tree;
1596 static avl_tree_t domain_tree;
1597 static boolean_t fuid_table_loaded;
1598 static boolean_t sa_loaded;
1599 sa_attr_type_t *sa_attr_table;
1600
1601 static void
1602 fuid_table_destroy()
1603 {
1604         if (fuid_table_loaded) {
1605                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1606                 fuid_table_loaded = B_FALSE;
1607         }
1608 }
1609
1610 /*
1611  * print uid or gid information.
1612  * For normal POSIX id just the id is printed in decimal format.
1613  * For CIFS files with FUID the fuid is printed in hex followed by
1614  * the domain-rid string.
1615  */
1616 static void
1617 print_idstr(uint64_t id, const char *id_type)
1618 {
1619         if (FUID_INDEX(id)) {
1620                 char *domain;
1621
1622                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1623                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1624                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1625         } else {
1626                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1627         }
1628
1629 }
1630
1631 static void
1632 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1633 {
1634         uint32_t uid_idx, gid_idx;
1635
1636         uid_idx = FUID_INDEX(uid);
1637         gid_idx = FUID_INDEX(gid);
1638
1639         /* Load domain table, if not already loaded */
1640         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1641                 uint64_t fuid_obj;
1642
1643                 /* first find the fuid object.  It lives in the master node */
1644                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1645                     8, 1, &fuid_obj) == 0);
1646                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1647                 (void) zfs_fuid_table_load(os, fuid_obj,
1648                     &idx_tree, &domain_tree);
1649                 fuid_table_loaded = B_TRUE;
1650         }
1651
1652         print_idstr(uid, "uid");
1653         print_idstr(gid, "gid");
1654 }
1655
1656 /*ARGSUSED*/
1657 static void
1658 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1659 {
1660         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1661         sa_handle_t *hdl;
1662         uint64_t xattr, rdev, gen;
1663         uint64_t uid, gid, mode, fsize, parent, links;
1664         uint64_t pflags;
1665         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1666         time_t z_crtime, z_atime, z_mtime, z_ctime;
1667         sa_bulk_attr_t bulk[12];
1668         int idx = 0;
1669         int error;
1670
1671         if (!sa_loaded) {
1672                 uint64_t sa_attrs = 0;
1673                 uint64_t version;
1674
1675                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1676                     8, 1, &version) == 0);
1677                 if (version >= ZPL_VERSION_SA) {
1678                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1679                             8, 1, &sa_attrs) == 0);
1680                 }
1681                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1682                     ZPL_END, &sa_attr_table)) != 0) {
1683                         (void) printf("sa_setup failed errno %d, can't "
1684                             "display znode contents\n", error);
1685                         return;
1686                 }
1687                 sa_loaded = B_TRUE;
1688         }
1689
1690         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1691                 (void) printf("Failed to get handle for SA znode\n");
1692                 return;
1693         }
1694
1695         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1696         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1697         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1698             &links, 8);
1699         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1700         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1701             &mode, 8);
1702         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1703             NULL, &parent, 8);
1704         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1705             &fsize, 8);
1706         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1707             acctm, 16);
1708         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1709             modtm, 16);
1710         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1711             crtm, 16);
1712         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1713             chgtm, 16);
1714         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1715             &pflags, 8);
1716
1717         if (sa_bulk_lookup(hdl, bulk, idx)) {
1718                 (void) sa_handle_destroy(hdl);
1719                 return;
1720         }
1721
1722         z_crtime = (time_t)crtm[0];
1723         z_atime = (time_t)acctm[0];
1724         z_mtime = (time_t)modtm[0];
1725         z_ctime = (time_t)chgtm[0];
1726
1727         if (dump_opt['d'] > 4) {
1728                 error = zfs_obj_to_path(os, object, path, sizeof (path));
1729                 if (error != 0) {
1730                         (void) snprintf(path, sizeof (path),
1731                             "\?\?\?<object#%llu>", (u_longlong_t)object);
1732                 }
1733                 (void) printf("\tpath   %s\n", path);
1734         }
1735         dump_uidgid(os, uid, gid);
1736         (void) printf("\tatime  %s", ctime(&z_atime));
1737         (void) printf("\tmtime  %s", ctime(&z_mtime));
1738         (void) printf("\tctime  %s", ctime(&z_ctime));
1739         (void) printf("\tcrtime %s", ctime(&z_crtime));
1740         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1741         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1742         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1743         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1744         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1745         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1746         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1747             sizeof (uint64_t)) == 0)
1748                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1749         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1750             sizeof (uint64_t)) == 0)
1751                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1752         sa_handle_destroy(hdl);
1753 }
1754
1755 /*ARGSUSED*/
1756 static void
1757 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1758 {
1759 }
1760
1761 /*ARGSUSED*/
1762 static void
1763 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1764 {
1765 }
1766
1767 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1768         dump_none,              /* unallocated                  */
1769         dump_zap,               /* object directory             */
1770         dump_uint64,            /* object array                 */
1771         dump_none,              /* packed nvlist                */
1772         dump_packed_nvlist,     /* packed nvlist size           */
1773         dump_none,              /* bpobj                        */
1774         dump_bpobj,             /* bpobj header                 */
1775         dump_none,              /* SPA space map header         */
1776         dump_none,              /* SPA space map                */
1777         dump_none,              /* ZIL intent log               */
1778         dump_dnode,             /* DMU dnode                    */
1779         dump_dmu_objset,        /* DMU objset                   */
1780         dump_dsl_dir,           /* DSL directory                */
1781         dump_zap,               /* DSL directory child map      */
1782         dump_zap,               /* DSL dataset snap map         */
1783         dump_zap,               /* DSL props                    */
1784         dump_dsl_dataset,       /* DSL dataset                  */
1785         dump_znode,             /* ZFS znode                    */
1786         dump_acl,               /* ZFS V0 ACL                   */
1787         dump_uint8,             /* ZFS plain file               */
1788         dump_zpldir,            /* ZFS directory                */
1789         dump_zap,               /* ZFS master node              */
1790         dump_zap,               /* ZFS delete queue             */
1791         dump_uint8,             /* zvol object                  */
1792         dump_zap,               /* zvol prop                    */
1793         dump_uint8,             /* other uint8[]                */
1794         dump_uint64,            /* other uint64[]               */
1795         dump_zap,               /* other ZAP                    */
1796         dump_zap,               /* persistent error log         */
1797         dump_uint8,             /* SPA history                  */
1798         dump_history_offsets,   /* SPA history offsets          */
1799         dump_zap,               /* Pool properties              */
1800         dump_zap,               /* DSL permissions              */
1801         dump_acl,               /* ZFS ACL                      */
1802         dump_uint8,             /* ZFS SYSACL                   */
1803         dump_none,              /* FUID nvlist                  */
1804         dump_packed_nvlist,     /* FUID nvlist size             */
1805         dump_zap,               /* DSL dataset next clones      */
1806         dump_zap,               /* DSL scrub queue              */
1807         dump_zap,               /* ZFS user/group used          */
1808         dump_zap,               /* ZFS user/group quota         */
1809         dump_zap,               /* snapshot refcount tags       */
1810         dump_ddt_zap,           /* DDT ZAP object               */
1811         dump_zap,               /* DDT statistics               */
1812         dump_znode,             /* SA object                    */
1813         dump_zap,               /* SA Master Node               */
1814         dump_sa_attrs,          /* SA attribute registration    */
1815         dump_sa_layouts,        /* SA attribute layouts         */
1816         dump_zap,               /* DSL scrub translations       */
1817         dump_none,              /* fake dedup BP                */
1818         dump_zap,               /* deadlist                     */
1819         dump_none,              /* deadlist hdr                 */
1820         dump_zap,               /* dsl clones                   */
1821         dump_bpobj_subobjs,     /* bpobj subobjs                */
1822         dump_unknown,           /* Unknown type, must be last   */
1823 };
1824
1825 static void
1826 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1827 {
1828         dmu_buf_t *db = NULL;
1829         dmu_object_info_t doi;
1830         dnode_t *dn;
1831         void *bonus = NULL;
1832         size_t bsize = 0;
1833         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1834         char bonus_size[32];
1835         char aux[50];
1836         int error;
1837
1838         if (*print_header) {
1839                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1840                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1841                     "%full", "type");
1842                 *print_header = 0;
1843         }
1844
1845         if (object == 0) {
1846                 dn = DMU_META_DNODE(os);
1847         } else {
1848                 error = dmu_bonus_hold(os, object, FTAG, &db);
1849                 if (error)
1850                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1851                             object, error);
1852                 bonus = db->db_data;
1853                 bsize = db->db_size;
1854                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1855         }
1856         dmu_object_info_from_dnode(dn, &doi);
1857
1858         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1859         zdb_nicenum(doi.doi_data_block_size, dblk);
1860         zdb_nicenum(doi.doi_max_offset, lsize);
1861         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1862         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1863         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1864             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1865             doi.doi_max_offset);
1866
1867         aux[0] = '\0';
1868
1869         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1870                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1871                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1872         }
1873
1874         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1875                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1876                     ZDB_COMPRESS_NAME(doi.doi_compress));
1877         }
1878
1879         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1880             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1881             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1882
1883         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1884                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1885                     "", "", "", "", "", bonus_size, "bonus",
1886                     ZDB_OT_NAME(doi.doi_bonus_type));
1887         }
1888
1889         if (verbosity >= 4) {
1890                 (void) printf("\tdnode flags: %s%s%s\n",
1891                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1892                     "USED_BYTES " : "",
1893                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1894                     "USERUSED_ACCOUNTED " : "",
1895                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1896                     "SPILL_BLKPTR" : "");
1897                 (void) printf("\tdnode maxblkid: %llu\n",
1898                     (longlong_t)dn->dn_phys->dn_maxblkid);
1899
1900                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1901                     bonus, bsize);
1902                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1903                 *print_header = 1;
1904         }
1905
1906         if (verbosity >= 5)
1907                 dump_indirect(dn);
1908
1909         if (verbosity >= 5) {
1910                 /*
1911                  * Report the list of segments that comprise the object.
1912                  */
1913                 uint64_t start = 0;
1914                 uint64_t end;
1915                 uint64_t blkfill = 1;
1916                 int minlvl = 1;
1917
1918                 if (dn->dn_type == DMU_OT_DNODE) {
1919                         minlvl = 0;
1920                         blkfill = DNODES_PER_BLOCK;
1921                 }
1922
1923                 for (;;) {
1924                         char segsize[32];
1925                         error = dnode_next_offset(dn,
1926                             0, &start, minlvl, blkfill, 0);
1927                         if (error)
1928                                 break;
1929                         end = start;
1930                         error = dnode_next_offset(dn,
1931                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1932                         zdb_nicenum(end - start, segsize);
1933                         (void) printf("\t\tsegment [%016llx, %016llx)"
1934                             " size %5s\n", (u_longlong_t)start,
1935                             (u_longlong_t)end, segsize);
1936                         if (error)
1937                                 break;
1938                         start = end;
1939                 }
1940         }
1941
1942         if (db != NULL)
1943                 dmu_buf_rele(db, FTAG);
1944 }
1945
1946 static char *objset_types[DMU_OST_NUMTYPES] = {
1947         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1948
1949 static void
1950 dump_dir(objset_t *os)
1951 {
1952         dmu_objset_stats_t dds;
1953         uint64_t object, object_count;
1954         uint64_t refdbytes, usedobjs, scratch;
1955         char numbuf[32];
1956         char blkbuf[BP_SPRINTF_LEN + 20];
1957         char osname[ZFS_MAX_DATASET_NAME_LEN];
1958         char *type = "UNKNOWN";
1959         int verbosity = dump_opt['d'];
1960         int print_header = 1;
1961         int i, error;
1962
1963         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1964         dmu_objset_fast_stat(os, &dds);
1965         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1966
1967         if (dds.dds_type < DMU_OST_NUMTYPES)
1968                 type = objset_types[dds.dds_type];
1969
1970         if (dds.dds_type == DMU_OST_META) {
1971                 dds.dds_creation_txg = TXG_INITIAL;
1972                 usedobjs = BP_GET_FILL(os->os_rootbp);
1973                 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
1974                     dd_used_bytes;
1975         } else {
1976                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1977         }
1978
1979         ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
1980
1981         zdb_nicenum(refdbytes, numbuf);
1982
1983         if (verbosity >= 4) {
1984                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1985                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1986                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1987         } else {
1988                 blkbuf[0] = '\0';
1989         }
1990
1991         dmu_objset_name(os, osname);
1992
1993         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1994             "%s, %llu objects%s\n",
1995             osname, type, (u_longlong_t)dmu_objset_id(os),
1996             (u_longlong_t)dds.dds_creation_txg,
1997             numbuf, (u_longlong_t)usedobjs, blkbuf);
1998
1999         if (zopt_objects != 0) {
2000                 for (i = 0; i < zopt_objects; i++)
2001                         dump_object(os, zopt_object[i], verbosity,
2002                             &print_header);
2003                 (void) printf("\n");
2004                 return;
2005         }
2006
2007         if (dump_opt['i'] != 0 || verbosity >= 2)
2008                 dump_intent_log(dmu_objset_zil(os));
2009
2010         if (dmu_objset_ds(os) != NULL)
2011                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
2012
2013         if (verbosity < 2)
2014                 return;
2015
2016         if (BP_IS_HOLE(os->os_rootbp))
2017                 return;
2018
2019         dump_object(os, 0, verbosity, &print_header);
2020         object_count = 0;
2021         if (DMU_USERUSED_DNODE(os) != NULL &&
2022             DMU_USERUSED_DNODE(os)->dn_type != 0) {
2023                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
2024                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
2025         }
2026
2027         object = 0;
2028         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
2029                 dump_object(os, object, verbosity, &print_header);
2030                 object_count++;
2031         }
2032
2033         ASSERT3U(object_count, ==, usedobjs);
2034
2035         (void) printf("\n");
2036
2037         if (error != ESRCH) {
2038                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
2039                 abort();
2040         }
2041 }
2042
2043 static void
2044 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
2045 {
2046         time_t timestamp = ub->ub_timestamp;
2047
2048         (void) printf(header ? header : "");
2049         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
2050         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
2051         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
2052         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
2053         (void) printf("\ttimestamp = %llu UTC = %s",
2054             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
2055         if (dump_opt['u'] >= 3) {
2056                 char blkbuf[BP_SPRINTF_LEN];
2057                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
2058                 (void) printf("\trootbp = %s\n", blkbuf);
2059         }
2060         (void) printf(footer ? footer : "");
2061 }
2062
2063 static void
2064 dump_config(spa_t *spa)
2065 {
2066         dmu_buf_t *db;
2067         size_t nvsize = 0;
2068         int error = 0;
2069
2070
2071         error = dmu_bonus_hold(spa->spa_meta_objset,
2072             spa->spa_config_object, FTAG, &db);
2073
2074         if (error == 0) {
2075                 nvsize = *(uint64_t *)db->db_data;
2076                 dmu_buf_rele(db, FTAG);
2077
2078                 (void) printf("\nMOS Configuration:\n");
2079                 dump_packed_nvlist(spa->spa_meta_objset,
2080                     spa->spa_config_object, (void *)&nvsize, 1);
2081         } else {
2082                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
2083                     (u_longlong_t)spa->spa_config_object, error);
2084         }
2085 }
2086
2087 static void
2088 dump_cachefile(const char *cachefile)
2089 {
2090         int fd;
2091         struct stat64 statbuf;
2092         char *buf;
2093         nvlist_t *config;
2094
2095         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
2096                 (void) printf("cannot open '%s': %s\n", cachefile,
2097                     strerror(errno));
2098                 exit(1);
2099         }
2100
2101         if (fstat64(fd, &statbuf) != 0) {
2102                 (void) printf("failed to stat '%s': %s\n", cachefile,
2103                     strerror(errno));
2104                 exit(1);
2105         }
2106
2107         if ((buf = malloc(statbuf.st_size)) == NULL) {
2108                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
2109                     (u_longlong_t)statbuf.st_size);
2110                 exit(1);
2111         }
2112
2113         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2114                 (void) fprintf(stderr, "failed to read %llu bytes\n",
2115                     (u_longlong_t)statbuf.st_size);
2116                 exit(1);
2117         }
2118
2119         (void) close(fd);
2120
2121         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2122                 (void) fprintf(stderr, "failed to unpack nvlist\n");
2123                 exit(1);
2124         }
2125
2126         free(buf);
2127
2128         dump_nvlist(config, 0);
2129
2130         nvlist_free(config);
2131 }
2132
2133 #define ZDB_MAX_UB_HEADER_SIZE 32
2134
2135 static void
2136 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
2137 {
2138         vdev_t vd;
2139         vdev_t *vdp = &vd;
2140         char header[ZDB_MAX_UB_HEADER_SIZE];
2141
2142         vd.vdev_ashift = ashift;
2143         vdp->vdev_top = vdp;
2144
2145         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2146                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2147                 uberblock_t *ub = (void *)((char *)lbl + uoff);
2148
2149                 if (uberblock_verify(ub))
2150                         continue;
2151                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2152                     "Uberblock[%d]\n", i);
2153                 dump_uberblock(ub, header, "");
2154         }
2155 }
2156
2157 static void
2158 dump_label(const char *dev)
2159 {
2160         int fd;
2161         vdev_label_t label;
2162         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
2163         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2164         struct stat64 statbuf;
2165         uint64_t psize, ashift;
2166         int len = strlen(dev) + 1;
2167
2168         if (strncmp(dev, ZFS_DISK_ROOTD, strlen(ZFS_DISK_ROOTD)) == 0) {
2169                 len++;
2170                 path = malloc(len);
2171                 (void) snprintf(path, len, "%s%s", ZFS_RDISK_ROOTD,
2172                     dev + strlen(ZFS_DISK_ROOTD));
2173         } else {
2174                 path = strdup(dev);
2175         }
2176
2177         if ((fd = open64(path, O_RDONLY)) < 0) {
2178                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2179                 free(path);
2180                 exit(1);
2181         }
2182
2183         if (fstat64(fd, &statbuf) != 0) {
2184                 (void) printf("failed to stat '%s': %s\n", path,
2185                     strerror(errno));
2186                 free(path);
2187                 (void) close(fd);
2188                 exit(1);
2189         }
2190
2191         if (S_ISBLK(statbuf.st_mode)) {
2192                 (void) printf("cannot use '%s': character device required\n",
2193                     path);
2194                 free(path);
2195                 (void) close(fd);
2196                 exit(1);
2197         }
2198
2199         psize = statbuf.st_size;
2200         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2201
2202         for (int l = 0; l < VDEV_LABELS; l++) {
2203                 nvlist_t *config = NULL;
2204
2205                 (void) printf("--------------------------------------------\n");
2206                 (void) printf("LABEL %d\n", l);
2207                 (void) printf("--------------------------------------------\n");
2208
2209                 if (pread64(fd, &label, sizeof (label),
2210                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2211                         (void) printf("failed to read label %d\n", l);
2212                         continue;
2213                 }
2214
2215                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2216                         (void) printf("failed to unpack label %d\n", l);
2217                         ashift = SPA_MINBLOCKSHIFT;
2218                 } else {
2219                         nvlist_t *vdev_tree = NULL;
2220
2221                         dump_nvlist(config, 4);
2222                         if ((nvlist_lookup_nvlist(config,
2223                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2224                             (nvlist_lookup_uint64(vdev_tree,
2225                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2226                                 ashift = SPA_MINBLOCKSHIFT;
2227                         nvlist_free(config);
2228                 }
2229                 if (dump_opt['u'])
2230                         dump_label_uberblocks(&label, ashift);
2231         }
2232
2233         free(path);
2234         (void) close(fd);
2235 }
2236
2237 static uint64_t dataset_feature_count[SPA_FEATURES];
2238
2239 /*ARGSUSED*/
2240 static int
2241 dump_one_dir(const char *dsname, void *arg)
2242 {
2243         int error;
2244         objset_t *os;
2245
2246         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2247         if (error) {
2248                 (void) printf("Could not open %s, error %d\n", dsname, error);
2249                 return (0);
2250         }
2251
2252         for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
2253                 if (!dmu_objset_ds(os)->ds_feature_inuse[f])
2254                         continue;
2255                 ASSERT(spa_feature_table[f].fi_flags &
2256                     ZFEATURE_FLAG_PER_DATASET);
2257                 dataset_feature_count[f]++;
2258         }
2259
2260         dump_dir(os);
2261         dmu_objset_disown(os, FTAG);
2262         fuid_table_destroy();
2263         sa_loaded = B_FALSE;
2264         return (0);
2265 }
2266
2267 /*
2268  * Block statistics.
2269  */
2270 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2271 typedef struct zdb_blkstats {
2272         uint64_t zb_asize;
2273         uint64_t zb_lsize;
2274         uint64_t zb_psize;
2275         uint64_t zb_count;
2276         uint64_t zb_gangs;
2277         uint64_t zb_ditto_samevdev;
2278         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2279 } zdb_blkstats_t;
2280
2281 /*
2282  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2283  */
2284 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2285 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2286 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2287 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2288
2289 static char *zdb_ot_extname[] = {
2290         "deferred free",
2291         "dedup ditto",
2292         "other",
2293         "Total",
2294 };
2295
2296 #define ZB_TOTAL        DN_MAX_LEVELS
2297
2298 typedef struct zdb_cb {
2299         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2300         uint64_t        zcb_dedup_asize;
2301         uint64_t        zcb_dedup_blocks;
2302         uint64_t        zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2303         uint64_t        zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2304             [BPE_PAYLOAD_SIZE];
2305         uint64_t        zcb_start;
2306         uint64_t        zcb_lastprint;
2307         uint64_t        zcb_totalasize;
2308         uint64_t        zcb_errors[256];
2309         int             zcb_readfails;
2310         int             zcb_haderrors;
2311         spa_t           *zcb_spa;
2312 } zdb_cb_t;
2313
2314 static void
2315 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2316     dmu_object_type_t type)
2317 {
2318         uint64_t refcnt = 0;
2319
2320         ASSERT(type < ZDB_OT_TOTAL);
2321
2322         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2323                 return;
2324
2325         for (int i = 0; i < 4; i++) {
2326                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2327                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2328                 int equal;
2329                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2330
2331                 zb->zb_asize += BP_GET_ASIZE(bp);
2332                 zb->zb_lsize += BP_GET_LSIZE(bp);
2333                 zb->zb_psize += BP_GET_PSIZE(bp);
2334                 zb->zb_count++;
2335
2336                 /*
2337                  * The histogram is only big enough to record blocks up to
2338                  * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2339                  * "other", bucket.
2340                  */
2341                 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2342                 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2343                 zb->zb_psize_histogram[idx]++;
2344
2345                 zb->zb_gangs += BP_COUNT_GANG(bp);
2346
2347                 switch (BP_GET_NDVAS(bp)) {
2348                 case 2:
2349                         if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2350                             DVA_GET_VDEV(&bp->blk_dva[1]))
2351                                 zb->zb_ditto_samevdev++;
2352                         break;
2353                 case 3:
2354                         equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2355                             DVA_GET_VDEV(&bp->blk_dva[1])) +
2356                             (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2357                             DVA_GET_VDEV(&bp->blk_dva[2])) +
2358                             (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2359                             DVA_GET_VDEV(&bp->blk_dva[2]));
2360                         if (equal != 0)
2361                                 zb->zb_ditto_samevdev++;
2362                         break;
2363                 }
2364
2365         }
2366
2367         if (BP_IS_EMBEDDED(bp)) {
2368                 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2369                 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2370                     [BPE_GET_PSIZE(bp)]++;
2371                 return;
2372         }
2373
2374         if (dump_opt['L'])
2375                 return;
2376
2377         if (BP_GET_DEDUP(bp)) {
2378                 ddt_t *ddt;
2379                 ddt_entry_t *dde;
2380
2381                 ddt = ddt_select(zcb->zcb_spa, bp);
2382                 ddt_enter(ddt);
2383                 dde = ddt_lookup(ddt, bp, B_FALSE);
2384
2385                 if (dde == NULL) {
2386                         refcnt = 0;
2387                 } else {
2388                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2389                         ddt_phys_decref(ddp);
2390                         refcnt = ddp->ddp_refcnt;
2391                         if (ddt_phys_total_refcnt(dde) == 0)
2392                                 ddt_remove(ddt, dde);
2393                 }
2394                 ddt_exit(ddt);
2395         }
2396
2397         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2398             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2399             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2400 }
2401
2402 /* ARGSUSED */
2403 static void
2404 zdb_blkptr_done(zio_t *zio)
2405 {
2406         spa_t *spa = zio->io_spa;
2407         blkptr_t *bp = zio->io_bp;
2408         int ioerr = zio->io_error;
2409         zdb_cb_t *zcb = zio->io_private;
2410         zbookmark_phys_t *zb = &zio->io_bookmark;
2411
2412         zio_data_buf_free(zio->io_data, zio->io_size);
2413
2414         mutex_enter(&spa->spa_scrub_lock);
2415         spa->spa_scrub_inflight--;
2416         cv_broadcast(&spa->spa_scrub_io_cv);
2417
2418         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2419                 char blkbuf[BP_SPRINTF_LEN];
2420
2421                 zcb->zcb_haderrors = 1;
2422                 zcb->zcb_errors[ioerr]++;
2423
2424                 if (dump_opt['b'] >= 2)
2425                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2426                 else
2427                         blkbuf[0] = '\0';
2428
2429                 (void) printf("zdb_blkptr_cb: "
2430                     "Got error %d reading "
2431                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2432                     ioerr,
2433                     (u_longlong_t)zb->zb_objset,
2434                     (u_longlong_t)zb->zb_object,
2435                     (u_longlong_t)zb->zb_level,
2436                     (u_longlong_t)zb->zb_blkid,
2437                     blkbuf);
2438         }
2439         mutex_exit(&spa->spa_scrub_lock);
2440 }
2441
2442 /* ARGSUSED */
2443 static int
2444 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2445     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2446 {
2447         zdb_cb_t *zcb = arg;
2448         dmu_object_type_t type;
2449         boolean_t is_metadata;
2450
2451         if (bp == NULL)
2452                 return (0);
2453
2454         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2455                 char blkbuf[BP_SPRINTF_LEN];
2456                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2457                 (void) printf("objset %llu object %llu "
2458                     "level %lld offset 0x%llx %s\n",
2459                     (u_longlong_t)zb->zb_objset,
2460                     (u_longlong_t)zb->zb_object,
2461                     (longlong_t)zb->zb_level,
2462                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2463                     blkbuf);
2464         }
2465
2466         if (BP_IS_HOLE(bp))
2467                 return (0);
2468
2469         type = BP_GET_TYPE(bp);
2470
2471         zdb_count_block(zcb, zilog, bp,
2472             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2473
2474         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2475
2476         if (!BP_IS_EMBEDDED(bp) &&
2477             (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2478                 size_t size = BP_GET_PSIZE(bp);
2479                 void *data = zio_data_buf_alloc(size);
2480                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2481
2482                 /* If it's an intent log block, failure is expected. */
2483                 if (zb->zb_level == ZB_ZIL_LEVEL)
2484                         flags |= ZIO_FLAG_SPECULATIVE;
2485
2486                 mutex_enter(&spa->spa_scrub_lock);
2487                 while (spa->spa_scrub_inflight > max_inflight)
2488                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2489                 spa->spa_scrub_inflight++;
2490                 mutex_exit(&spa->spa_scrub_lock);
2491
2492                 zio_nowait(zio_read(NULL, spa, bp, data, size,
2493                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2494         }
2495
2496         zcb->zcb_readfails = 0;
2497
2498         /* only call gethrtime() every 100 blocks */
2499         static int iters;
2500         if (++iters > 100)
2501                 iters = 0;
2502         else
2503                 return (0);
2504
2505         if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2506                 uint64_t now = gethrtime();
2507                 char buf[10];
2508                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2509                 int kb_per_sec =
2510                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2511                 int sec_remaining =
2512                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2513
2514                 zfs_nicenum(bytes, buf, sizeof (buf));
2515                 (void) fprintf(stderr,
2516                     "\r%5s completed (%4dMB/s) "
2517                     "estimated time remaining: %uhr %02umin %02usec        ",
2518                     buf, kb_per_sec / 1024,
2519                     sec_remaining / 60 / 60,
2520                     sec_remaining / 60 % 60,
2521                     sec_remaining % 60);
2522
2523                 zcb->zcb_lastprint = now;
2524         }
2525
2526         return (0);
2527 }
2528
2529 static void
2530 zdb_leak(void *arg, uint64_t start, uint64_t size)
2531 {
2532         vdev_t *vd = arg;
2533
2534         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2535             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2536 }
2537
2538 static metaslab_ops_t zdb_metaslab_ops = {
2539         NULL    /* alloc */
2540 };
2541
2542 static void
2543 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2544 {
2545         ddt_bookmark_t ddb = { 0 };
2546         ddt_entry_t dde;
2547         int error;
2548
2549         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2550                 blkptr_t blk;
2551                 ddt_phys_t *ddp = dde.dde_phys;
2552
2553                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2554                         return;
2555
2556                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2557
2558                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2559                         if (ddp->ddp_phys_birth == 0)
2560                                 continue;
2561                         ddt_bp_create(ddb.ddb_checksum,
2562                             &dde.dde_key, ddp, &blk);
2563                         if (p == DDT_PHYS_DITTO) {
2564                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2565                         } else {
2566                                 zcb->zcb_dedup_asize +=
2567                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2568                                 zcb->zcb_dedup_blocks++;
2569                         }
2570                 }
2571                 if (!dump_opt['L']) {
2572                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2573                         ddt_enter(ddt);
2574                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2575                         ddt_exit(ddt);
2576                 }
2577         }
2578
2579         ASSERT(error == ENOENT);
2580 }
2581
2582 static void
2583 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2584 {
2585         zcb->zcb_spa = spa;
2586
2587         if (!dump_opt['L']) {
2588                 vdev_t *rvd = spa->spa_root_vdev;
2589                 for (uint64_t c = 0; c < rvd->vdev_children; c++) {
2590                         vdev_t *vd = rvd->vdev_child[c];
2591                         for (uint64_t m = 0; m < vd->vdev_ms_count; m++) {
2592                                 metaslab_t *msp = vd->vdev_ms[m];
2593                                 mutex_enter(&msp->ms_lock);
2594                                 metaslab_unload(msp);
2595
2596                                 /*
2597                                  * For leak detection, we overload the metaslab
2598                                  * ms_tree to contain allocated segments
2599                                  * instead of free segments. As a result,
2600                                  * we can't use the normal metaslab_load/unload
2601                                  * interfaces.
2602                                  */
2603                                 if (msp->ms_sm != NULL) {
2604                                         (void) fprintf(stderr,
2605                                             "\rloading space map for "
2606                                             "vdev %llu of %llu, "
2607                                             "metaslab %llu of %llu ...",
2608                                             (longlong_t)c,
2609                                             (longlong_t)rvd->vdev_children,
2610                                             (longlong_t)m,
2611                                             (longlong_t)vd->vdev_ms_count);
2612
2613                                         msp->ms_ops = &zdb_metaslab_ops;
2614
2615                                         /*
2616                                          * We don't want to spend the CPU
2617                                          * manipulating the size-ordered
2618                                          * tree, so clear the range_tree
2619                                          * ops.
2620                                          */
2621                                         msp->ms_tree->rt_ops = NULL;
2622                                         VERIFY0(space_map_load(msp->ms_sm,
2623                                             msp->ms_tree, SM_ALLOC));
2624                                         msp->ms_loaded = B_TRUE;
2625                                 }
2626                                 mutex_exit(&msp->ms_lock);
2627                         }
2628                 }
2629                 (void) fprintf(stderr, "\n");
2630         }
2631
2632         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2633
2634         zdb_ddt_leak_init(spa, zcb);
2635
2636         spa_config_exit(spa, SCL_CONFIG, FTAG);
2637 }
2638
2639 static void
2640 zdb_leak_fini(spa_t *spa)
2641 {
2642         if (!dump_opt['L']) {
2643                 vdev_t *rvd = spa->spa_root_vdev;
2644                 for (int c = 0; c < rvd->vdev_children; c++) {
2645                         vdev_t *vd = rvd->vdev_child[c];
2646                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2647                                 metaslab_t *msp = vd->vdev_ms[m];
2648                                 mutex_enter(&msp->ms_lock);
2649
2650                                 /*
2651                                  * The ms_tree has been overloaded to
2652                                  * contain allocated segments. Now that we
2653                                  * finished traversing all blocks, any
2654                                  * block that remains in the ms_tree
2655                                  * represents an allocated block that we
2656                                  * did not claim during the traversal.
2657                                  * Claimed blocks would have been removed
2658                                  * from the ms_tree.
2659                                  */
2660                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2661                                 msp->ms_loaded = B_FALSE;
2662
2663                                 mutex_exit(&msp->ms_lock);
2664                         }
2665                 }
2666         }
2667 }
2668
2669 /* ARGSUSED */
2670 static int
2671 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2672 {
2673         zdb_cb_t *zcb = arg;
2674
2675         if (dump_opt['b'] >= 5) {
2676                 char blkbuf[BP_SPRINTF_LEN];
2677                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2678                 (void) printf("[%s] %s\n",
2679                     "deferred free", blkbuf);
2680         }
2681         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2682         return (0);
2683 }
2684
2685 static int
2686 dump_block_stats(spa_t *spa)
2687 {
2688         zdb_cb_t zcb = { 0 };
2689         zdb_blkstats_t *zb, *tzb;
2690         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2691         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2692         boolean_t leaks = B_FALSE;
2693
2694         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2695             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2696             (dump_opt['c'] == 1) ? "metadata " : "",
2697             dump_opt['c'] ? "checksums " : "",
2698             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2699             !dump_opt['L'] ? "nothing leaked " : "");
2700
2701         /*
2702          * Load all space maps as SM_ALLOC maps, then traverse the pool
2703          * claiming each block we discover.  If the pool is perfectly
2704          * consistent, the space maps will be empty when we're done.
2705          * Anything left over is a leak; any block we can't claim (because
2706          * it's not part of any space map) is a double allocation,
2707          * reference to a freed block, or an unclaimed log block.
2708          */
2709         zdb_leak_init(spa, &zcb);
2710
2711         /*
2712          * If there's a deferred-free bplist, process that first.
2713          */
2714         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2715             count_block_cb, &zcb, NULL);
2716         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2717                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2718                     count_block_cb, &zcb, NULL);
2719         }
2720         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2721                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2722                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2723                     &zcb, NULL));
2724         }
2725
2726         if (dump_opt['c'] > 1)
2727                 flags |= TRAVERSE_PREFETCH_DATA;
2728
2729         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2730         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2731         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2732
2733         /*
2734          * If we've traversed the data blocks then we need to wait for those
2735          * I/Os to complete. We leverage "The Godfather" zio to wait on
2736          * all async I/Os to complete.
2737          */
2738         if (dump_opt['c']) {
2739                 for (int i = 0; i < max_ncpus; i++) {
2740                         (void) zio_wait(spa->spa_async_zio_root[i]);
2741                         spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
2742                             ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2743                             ZIO_FLAG_GODFATHER);
2744                 }
2745         }
2746
2747         if (zcb.zcb_haderrors) {
2748                 (void) printf("\nError counts:\n\n");
2749                 (void) printf("\t%5s  %s\n", "errno", "count");
2750                 for (int e = 0; e < 256; e++) {
2751                         if (zcb.zcb_errors[e] != 0) {
2752                                 (void) printf("\t%5d  %llu\n",
2753                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2754                         }
2755                 }
2756         }
2757
2758         /*
2759          * Report any leaked segments.
2760          */
2761         zdb_leak_fini(spa);
2762
2763         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2764
2765         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2766         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2767
2768         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2769         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2770
2771         if (total_found == total_alloc) {
2772                 if (!dump_opt['L'])
2773                         (void) printf("\n\tNo leaks (block sum matches space"
2774                             " maps exactly)\n");
2775         } else {
2776                 (void) printf("block traversal size %llu != alloc %llu "
2777                     "(%s %lld)\n",
2778                     (u_longlong_t)total_found,
2779                     (u_longlong_t)total_alloc,
2780                     (dump_opt['L']) ? "unreachable" : "leaked",
2781                     (longlong_t)(total_alloc - total_found));
2782                 leaks = B_TRUE;
2783         }
2784
2785         if (tzb->zb_count == 0)
2786                 return (2);
2787
2788         (void) printf("\n");
2789         (void) printf("\tbp count:      %10llu\n",
2790             (u_longlong_t)tzb->zb_count);
2791         (void) printf("\tganged count:  %10llu\n",
2792             (longlong_t)tzb->zb_gangs);
2793         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2794             (u_longlong_t)tzb->zb_lsize,
2795             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2796         (void) printf("\tbp physical:   %10llu      avg:"
2797             " %6llu     compression: %6.2f\n",
2798             (u_longlong_t)tzb->zb_psize,
2799             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2800             (double)tzb->zb_lsize / tzb->zb_psize);
2801         (void) printf("\tbp allocated:  %10llu      avg:"
2802             " %6llu     compression: %6.2f\n",
2803             (u_longlong_t)tzb->zb_asize,
2804             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2805             (double)tzb->zb_lsize / tzb->zb_asize);
2806         (void) printf("\tbp deduped:    %10llu    ref>1:"
2807             " %6llu   deduplication: %6.2f\n",
2808             (u_longlong_t)zcb.zcb_dedup_asize,
2809             (u_longlong_t)zcb.zcb_dedup_blocks,
2810             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2811         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2812             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2813
2814         for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2815                 if (zcb.zcb_embedded_blocks[i] == 0)
2816                         continue;
2817                 (void) printf("\n");
2818                 (void) printf("\tadditional, non-pointer bps of type %u: "
2819                     "%10llu\n",
2820                     i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2821
2822                 if (dump_opt['b'] >= 3) {
2823                         (void) printf("\t number of (compressed) bytes:  "
2824                             "number of bps\n");
2825                         dump_histogram(zcb.zcb_embedded_histogram[i],
2826                             sizeof (zcb.zcb_embedded_histogram[i]) /
2827                             sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
2828                 }
2829         }
2830
2831         if (tzb->zb_ditto_samevdev != 0) {
2832                 (void) printf("\tDittoed blocks on same vdev: %llu\n",
2833                     (longlong_t)tzb->zb_ditto_samevdev);
2834         }
2835
2836         if (dump_opt['b'] >= 2) {
2837                 int l, t, level;
2838                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2839                     "\t  avg\t comp\t%%Total\tType\n");
2840
2841                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2842                         char csize[32], lsize[32], psize[32], asize[32];
2843                         char avg[32], gang[32];
2844                         char *typename;
2845
2846                         if (t < DMU_OT_NUMTYPES)
2847                                 typename = dmu_ot[t].ot_name;
2848                         else
2849                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2850
2851                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2852                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2853                                     "\t%5s\t%5s\t%6s\t%s\n",
2854                                     "-",
2855                                     "-",
2856                                     "-",
2857                                     "-",
2858                                     "-",
2859                                     "-",
2860                                     "-",
2861                                     typename);
2862                                 continue;
2863                         }
2864
2865                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2866                                 level = (l == -1 ? ZB_TOTAL : l);
2867                                 zb = &zcb.zcb_type[level][t];
2868
2869                                 if (zb->zb_asize == 0)
2870                                         continue;
2871
2872                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2873                                         continue;
2874
2875                                 if (level == 0 && zb->zb_asize ==
2876                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2877                                         continue;
2878
2879                                 zdb_nicenum(zb->zb_count, csize);
2880                                 zdb_nicenum(zb->zb_lsize, lsize);
2881                                 zdb_nicenum(zb->zb_psize, psize);
2882                                 zdb_nicenum(zb->zb_asize, asize);
2883                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2884                                 zdb_nicenum(zb->zb_gangs, gang);
2885
2886                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2887                                     "\t%5.2f\t%6.2f\t",
2888                                     csize, lsize, psize, asize, avg,
2889                                     (double)zb->zb_lsize / zb->zb_psize,
2890                                     100.0 * zb->zb_asize / tzb->zb_asize);
2891
2892                                 if (level == ZB_TOTAL)
2893                                         (void) printf("%s\n", typename);
2894                                 else
2895                                         (void) printf("    L%d %s\n",
2896                                             level, typename);
2897
2898                                 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2899                                         (void) printf("\t number of ganged "
2900                                             "blocks: %s\n", gang);
2901                                 }
2902
2903                                 if (dump_opt['b'] >= 4) {
2904                                         (void) printf("psize "
2905                                             "(in 512-byte sectors): "
2906                                             "number of blocks\n");
2907                                         dump_histogram(zb->zb_psize_histogram,
2908                                             PSIZE_HISTO_SIZE, 0);
2909                                 }
2910                         }
2911                 }
2912         }
2913
2914         (void) printf("\n");
2915
2916         if (leaks)
2917                 return (2);
2918
2919         if (zcb.zcb_haderrors)
2920                 return (3);
2921
2922         return (0);
2923 }
2924
2925 typedef struct zdb_ddt_entry {
2926         ddt_key_t       zdde_key;
2927         uint64_t        zdde_ref_blocks;
2928         uint64_t        zdde_ref_lsize;
2929         uint64_t        zdde_ref_psize;
2930         uint64_t        zdde_ref_dsize;
2931         avl_node_t      zdde_node;
2932 } zdb_ddt_entry_t;
2933
2934 /* ARGSUSED */
2935 static int
2936 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2937     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2938 {
2939         avl_tree_t *t = arg;
2940         avl_index_t where;
2941         zdb_ddt_entry_t *zdde, zdde_search;
2942
2943         if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
2944                 return (0);
2945
2946         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2947                 (void) printf("traversing objset %llu, %llu objects, "
2948                     "%lu blocks so far\n",
2949                     (u_longlong_t)zb->zb_objset,
2950                     (u_longlong_t)BP_GET_FILL(bp),
2951                     avl_numnodes(t));
2952         }
2953
2954         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2955             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2956                 return (0);
2957
2958         ddt_key_fill(&zdde_search.zdde_key, bp);
2959
2960         zdde = avl_find(t, &zdde_search, &where);
2961
2962         if (zdde == NULL) {
2963                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2964                 zdde->zdde_key = zdde_search.zdde_key;
2965                 avl_insert(t, zdde, where);
2966         }
2967
2968         zdde->zdde_ref_blocks += 1;
2969         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2970         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2971         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2972
2973         return (0);
2974 }
2975
2976 static void
2977 dump_simulated_ddt(spa_t *spa)
2978 {
2979         avl_tree_t t;
2980         void *cookie = NULL;
2981         zdb_ddt_entry_t *zdde;
2982         ddt_histogram_t ddh_total = { 0 };
2983         ddt_stat_t dds_total = { 0 };
2984
2985         avl_create(&t, ddt_entry_compare,
2986             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2987
2988         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2989
2990         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2991             zdb_ddt_add_cb, &t);
2992
2993         spa_config_exit(spa, SCL_CONFIG, FTAG);
2994
2995         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2996                 ddt_stat_t dds;
2997                 uint64_t refcnt = zdde->zdde_ref_blocks;
2998                 ASSERT(refcnt != 0);
2999
3000                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
3001                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
3002                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
3003                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
3004
3005                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
3006                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
3007                 dds.dds_ref_psize = zdde->zdde_ref_psize;
3008                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
3009
3010                 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
3011                     &dds, 0);
3012
3013                 umem_free(zdde, sizeof (*zdde));
3014         }
3015
3016         avl_destroy(&t);
3017
3018         ddt_histogram_stat(&dds_total, &ddh_total);
3019
3020         (void) printf("Simulated DDT histogram:\n");
3021
3022         zpool_dump_ddt(&dds_total, &ddh_total);
3023
3024         dump_dedup_ratio(&dds_total);
3025 }
3026
3027 static void
3028 dump_zpool(spa_t *spa)
3029 {
3030         dsl_pool_t *dp = spa_get_dsl(spa);
3031         int rc = 0;
3032
3033         if (dump_opt['S']) {
3034                 dump_simulated_ddt(spa);
3035                 return;
3036         }
3037
3038         if (!dump_opt['e'] && dump_opt['C'] > 1) {
3039                 (void) printf("\nCached configuration:\n");
3040                 dump_nvlist(spa->spa_config, 8);
3041         }
3042
3043         if (dump_opt['C'])
3044                 dump_config(spa);
3045
3046         if (dump_opt['u'])
3047                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
3048
3049         if (dump_opt['D'])
3050                 dump_all_ddts(spa);
3051
3052         if (dump_opt['d'] > 2 || dump_opt['m'])
3053                 dump_metaslabs(spa);
3054         if (dump_opt['M'])
3055                 dump_metaslab_groups(spa);
3056
3057         if (dump_opt['d'] || dump_opt['i']) {
3058                 dump_dir(dp->dp_meta_objset);
3059                 if (dump_opt['d'] >= 3) {
3060                         dump_full_bpobj(&spa->spa_deferred_bpobj,
3061                             "Deferred frees", 0);
3062                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3063                                 dump_full_bpobj(
3064                                     &spa->spa_dsl_pool->dp_free_bpobj,
3065                                     "Pool snapshot frees", 0);
3066                         }
3067
3068                         if (spa_feature_is_active(spa,
3069                             SPA_FEATURE_ASYNC_DESTROY)) {
3070                                 dump_bptree(spa->spa_meta_objset,
3071                                     spa->spa_dsl_pool->dp_bptree_obj,
3072                                     "Pool dataset frees");
3073                         }
3074                         dump_dtl(spa->spa_root_vdev, 0);
3075                 }
3076                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
3077                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
3078
3079                 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
3080                         uint64_t refcount;
3081
3082                         if (!(spa_feature_table[f].fi_flags &
3083                             ZFEATURE_FLAG_PER_DATASET)) {
3084                                 ASSERT0(dataset_feature_count[f]);
3085                                 continue;
3086                         }
3087                         (void) feature_get_refcount(spa,
3088                             &spa_feature_table[f], &refcount);
3089                         if (dataset_feature_count[f] != refcount) {
3090                                 (void) printf("%s feature refcount mismatch: "
3091                                     "%lld datasets != %lld refcount\n",
3092                                     spa_feature_table[f].fi_uname,
3093                                     (longlong_t)dataset_feature_count[f],
3094                                     (longlong_t)refcount);
3095                                 rc = 2;
3096                         } else {
3097                                 (void) printf("Verified %s feature refcount "
3098                                     "of %llu is correct\n",
3099                                     spa_feature_table[f].fi_uname,
3100                                     (longlong_t)refcount);
3101                         }
3102                 }
3103         }
3104         if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
3105                 rc = dump_block_stats(spa);
3106
3107         if (rc == 0)
3108                 rc = verify_spacemap_refcounts(spa);
3109
3110         if (dump_opt['s'])
3111                 show_pool_stats(spa);
3112
3113         if (dump_opt['h'])
3114                 dump_history(spa);
3115
3116         if (rc != 0) {
3117                 dump_debug_buffer();
3118                 exit(rc);
3119         }
3120 }
3121
3122 #define ZDB_FLAG_CHECKSUM       0x0001
3123 #define ZDB_FLAG_DECOMPRESS     0x0002
3124 #define ZDB_FLAG_BSWAP          0x0004
3125 #define ZDB_FLAG_GBH            0x0008
3126 #define ZDB_FLAG_INDIRECT       0x0010
3127 #define ZDB_FLAG_PHYS           0x0020
3128 #define ZDB_FLAG_RAW            0x0040
3129 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
3130
3131 int flagbits[256];
3132
3133 static void
3134 zdb_print_blkptr(blkptr_t *bp, int flags)
3135 {
3136         char blkbuf[BP_SPRINTF_LEN];
3137
3138         if (flags & ZDB_FLAG_BSWAP)
3139                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3140
3141         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3142         (void) printf("%s\n", blkbuf);
3143 }
3144
3145 static void
3146 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3147 {
3148         int i;
3149
3150         for (i = 0; i < nbps; i++)
3151                 zdb_print_blkptr(&bp[i], flags);
3152 }
3153
3154 static void
3155 zdb_dump_gbh(void *buf, int flags)
3156 {
3157         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3158 }
3159
3160 static void
3161 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3162 {
3163         if (flags & ZDB_FLAG_BSWAP)
3164                 byteswap_uint64_array(buf, size);
3165         (void) write(1, buf, size);
3166 }
3167
3168 static void
3169 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3170 {
3171         uint64_t *d = (uint64_t *)buf;
3172         int nwords = size / sizeof (uint64_t);
3173         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3174         int i, j;
3175         char *hdr, *c;
3176
3177
3178         if (do_bswap)
3179                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
3180         else
3181                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
3182
3183         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
3184
3185         for (i = 0; i < nwords; i += 2) {
3186                 (void) printf("%06llx:  %016llx  %016llx  ",
3187                     (u_longlong_t)(i * sizeof (uint64_t)),
3188                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3189                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3190
3191                 c = (char *)&d[i];
3192                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3193                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3194                 (void) printf("\n");
3195         }
3196 }
3197
3198 /*
3199  * There are two acceptable formats:
3200  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
3201  *      child[.child]*    - For example: 0.1.1
3202  *
3203  * The second form can be used to specify arbitrary vdevs anywhere
3204  * in the heirarchy.  For example, in a pool with a mirror of
3205  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3206  */
3207 static vdev_t *
3208 zdb_vdev_lookup(vdev_t *vdev, char *path)
3209 {
3210         char *s, *p, *q;
3211         int i;
3212
3213         if (vdev == NULL)
3214                 return (NULL);
3215
3216         /* First, assume the x.x.x.x format */
3217         i = (int)strtoul(path, &s, 10);
3218         if (s == path || (s && *s != '.' && *s != '\0'))
3219                 goto name;
3220         if (i < 0 || i >= vdev->vdev_children)
3221                 return (NULL);
3222
3223         vdev = vdev->vdev_child[i];
3224         if (*s == '\0')
3225                 return (vdev);
3226         return (zdb_vdev_lookup(vdev, s+1));
3227
3228 name:
3229         for (i = 0; i < vdev->vdev_children; i++) {
3230                 vdev_t *vc = vdev->vdev_child[i];
3231
3232                 if (vc->vdev_path == NULL) {
3233                         vc = zdb_vdev_lookup(vc, path);
3234                         if (vc == NULL)
3235                                 continue;
3236                         else
3237                                 return (vc);
3238                 }
3239
3240                 p = strrchr(vc->vdev_path, '/');
3241                 p = p ? p + 1 : vc->vdev_path;
3242                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3243
3244                 if (strcmp(vc->vdev_path, path) == 0)
3245                         return (vc);
3246                 if (strcmp(p, path) == 0)
3247                         return (vc);
3248                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3249                         return (vc);
3250         }
3251
3252         return (NULL);
3253 }
3254
3255 /*
3256  * Read a block from a pool and print it out.  The syntax of the
3257  * block descriptor is:
3258  *
3259  *      pool:vdev_specifier:offset:size[:flags]
3260  *
3261  *      pool           - The name of the pool you wish to read from
3262  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3263  *      offset         - offset, in hex, in bytes
3264  *      size           - Amount of data to read, in hex, in bytes
3265  *      flags          - A string of characters specifying options
3266  *               b: Decode a blkptr at given offset within block
3267  *              *c: Calculate and display checksums
3268  *               d: Decompress data before dumping
3269  *               e: Byteswap data before dumping
3270  *               g: Display data as a gang block header
3271  *               i: Display as an indirect block
3272  *               p: Do I/O to physical offset
3273  *               r: Dump raw data to stdout
3274  *
3275  *              * = not yet implemented
3276  */
3277 static void
3278 zdb_read_block(char *thing, spa_t *spa)
3279 {
3280         blkptr_t blk, *bp = &blk;
3281         dva_t *dva = bp->blk_dva;
3282         int flags = 0;
3283         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3284         zio_t *zio;
3285         vdev_t *vd;
3286         void *pbuf, *lbuf, *buf;
3287         char *s, *p, *dup, *vdev, *flagstr;
3288         int i, error;
3289
3290         dup = strdup(thing);
3291         s = strtok(dup, ":");
3292         vdev = s ? s : "";
3293         s = strtok(NULL, ":");
3294         offset = strtoull(s ? s : "", NULL, 16);
3295         s = strtok(NULL, ":");
3296         size = strtoull(s ? s : "", NULL, 16);
3297         s = strtok(NULL, ":");
3298         flagstr = s ? s : "";
3299
3300         s = NULL;
3301         if (size == 0)
3302                 s = "size must not be zero";
3303         if (!IS_P2ALIGNED(size, DEV_BSIZE))
3304                 s = "size must be a multiple of sector size";
3305         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3306                 s = "offset must be a multiple of sector size";
3307         if (s) {
3308                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3309                 free(dup);
3310                 return;
3311         }
3312
3313         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3314                 for (i = 0; flagstr[i]; i++) {
3315                         int bit = flagbits[(uchar_t)flagstr[i]];
3316
3317                         if (bit == 0) {
3318                                 (void) printf("***Invalid flag: %c\n",
3319                                     flagstr[i]);
3320                                 continue;
3321                         }
3322                         flags |= bit;
3323
3324                         /* If it's not something with an argument, keep going */
3325                         if ((bit & (ZDB_FLAG_CHECKSUM |
3326                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3327                                 continue;
3328
3329                         p = &flagstr[i + 1];
3330                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
3331                                 blkptr_offset = strtoull(p, &p, 16);
3332                         if (*p != ':' && *p != '\0') {
3333                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3334                                 free(dup);
3335                                 return;
3336                         }
3337                         i += p - &flagstr[i + 1]; /* skip over the number */
3338                 }
3339         }
3340
3341         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3342         if (vd == NULL) {
3343                 (void) printf("***Invalid vdev: %s\n", vdev);
3344                 free(dup);
3345                 return;
3346         } else {
3347                 if (vd->vdev_path)
3348                         (void) fprintf(stderr, "Found vdev: %s\n",
3349                             vd->vdev_path);
3350                 else
3351                         (void) fprintf(stderr, "Found vdev type: %s\n",
3352                             vd->vdev_ops->vdev_op_type);
3353         }
3354
3355         psize = size;
3356         lsize = size;
3357
3358         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3359         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3360
3361         BP_ZERO(bp);
3362
3363         DVA_SET_VDEV(&dva[0], vd->vdev_id);
3364         DVA_SET_OFFSET(&dva[0], offset);
3365         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3366         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3367
3368         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3369
3370         BP_SET_LSIZE(bp, lsize);
3371         BP_SET_PSIZE(bp, psize);
3372         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3373         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3374         BP_SET_TYPE(bp, DMU_OT_NONE);
3375         BP_SET_LEVEL(bp, 0);
3376         BP_SET_DEDUP(bp, 0);
3377         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3378
3379         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3380         zio = zio_root(spa, NULL, NULL, 0);
3381
3382         if (vd == vd->vdev_top) {
3383                 /*
3384                  * Treat this as a normal block read.
3385                  */
3386                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3387                     ZIO_PRIORITY_SYNC_READ,
3388                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3389         } else {
3390                 /*
3391                  * Treat this as a vdev child I/O.
3392                  */
3393                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3394                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3395                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3396                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3397                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3398         }
3399
3400         error = zio_wait(zio);
3401         spa_config_exit(spa, SCL_STATE, FTAG);
3402
3403         if (error) {
3404                 (void) printf("Read of %s failed, error: %d\n", thing, error);
3405                 goto out;
3406         }
3407
3408         if (flags & ZDB_FLAG_DECOMPRESS) {
3409                 /*
3410                  * We don't know how the data was compressed, so just try
3411                  * every decompress function at every inflated blocksize.
3412                  */
3413                 enum zio_compress c;
3414                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3415                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3416
3417                 bcopy(pbuf, pbuf2, psize);
3418
3419                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3420                     SPA_MAXBLOCKSIZE - psize) == 0);
3421
3422                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3423                     SPA_MAXBLOCKSIZE - psize) == 0);
3424
3425                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3426                     lsize -= SPA_MINBLOCKSIZE) {
3427                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3428                                 if (zio_decompress_data(c, pbuf, lbuf,
3429                                     psize, lsize) == 0 &&
3430                                     zio_decompress_data(c, pbuf2, lbuf2,
3431                                     psize, lsize) == 0 &&
3432                                     bcmp(lbuf, lbuf2, lsize) == 0)
3433                                         break;
3434                         }
3435                         if (c != ZIO_COMPRESS_FUNCTIONS)
3436                                 break;
3437                         lsize -= SPA_MINBLOCKSIZE;
3438                 }
3439
3440                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3441                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3442
3443                 if (lsize <= psize) {
3444                         (void) printf("Decompress of %s failed\n", thing);
3445                         goto out;
3446                 }
3447                 buf = lbuf;
3448                 size = lsize;
3449         } else {
3450                 buf = pbuf;
3451                 size = psize;
3452         }
3453
3454         if (flags & ZDB_FLAG_PRINT_BLKPTR)
3455                 zdb_print_blkptr((blkptr_t *)(void *)
3456                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3457         else if (flags & ZDB_FLAG_RAW)
3458                 zdb_dump_block_raw(buf, size, flags);
3459         else if (flags & ZDB_FLAG_INDIRECT)
3460                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3461                     flags);
3462         else if (flags & ZDB_FLAG_GBH)
3463                 zdb_dump_gbh(buf, flags);
3464         else
3465                 zdb_dump_block(thing, buf, size, flags);
3466
3467 out:
3468         umem_free(pbuf, SPA_MAXBLOCKSIZE);
3469         umem_free(lbuf, SPA_MAXBLOCKSIZE);
3470         free(dup);
3471 }
3472
3473 static boolean_t
3474 pool_match(nvlist_t *cfg, char *tgt)
3475 {
3476         uint64_t v, guid = strtoull(tgt, NULL, 0);
3477         char *s;
3478
3479         if (guid != 0) {
3480                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3481                         return (v == guid);
3482         } else {
3483                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3484                         return (strcmp(s, tgt) == 0);
3485         }
3486         return (B_FALSE);
3487 }
3488
3489 static char *
3490 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3491 {
3492         nvlist_t *pools;
3493         nvlist_t *match = NULL;
3494         char *name = NULL;
3495         char *sepp = NULL;
3496         char sep = '\0';
3497         int count = 0;
3498         importargs_t args = { 0 };
3499
3500         args.paths = dirc;
3501         args.path = dirv;
3502         args.can_be_active = B_TRUE;
3503
3504         if ((sepp = strpbrk(*target, "/@")) != NULL) {
3505                 sep = *sepp;
3506                 *sepp = '\0';
3507         }
3508
3509         pools = zpool_search_import(g_zfs, &args);
3510
3511         if (pools != NULL) {
3512                 nvpair_t *elem = NULL;
3513                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3514                         verify(nvpair_value_nvlist(elem, configp) == 0);
3515                         if (pool_match(*configp, *target)) {
3516                                 count++;
3517                                 if (match != NULL) {
3518                                         /* print previously found config */
3519                                         if (name != NULL) {
3520                                                 (void) printf("%s\n", name);
3521                                                 dump_nvlist(match, 8);
3522                                                 name = NULL;
3523                                         }
3524                                         (void) printf("%s\n",
3525                                             nvpair_name(elem));
3526                                         dump_nvlist(*configp, 8);
3527                                 } else {
3528                                         match = *configp;
3529                                         name = nvpair_name(elem);
3530                                 }
3531                         }
3532                 }
3533         }
3534         if (count > 1)
3535                 (void) fatal("\tMatched %d pools - use pool GUID "
3536                     "instead of pool name or \n"
3537                     "\tpool name part of a dataset name to select pool", count);
3538
3539         if (sepp)
3540                 *sepp = sep;
3541         /*
3542          * If pool GUID was specified for pool id, replace it with pool name
3543          */
3544         if (name && (strstr(*target, name) != *target)) {
3545                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3546
3547                 *target = umem_alloc(sz, UMEM_NOFAIL);
3548                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3549         }
3550
3551         *configp = name ? match : NULL;
3552
3553         return (name);
3554 }
3555
3556 int
3557 main(int argc, char **argv)
3558 {
3559         int i, c;
3560         struct rlimit rl = { 1024, 1024 };
3561         spa_t *spa = NULL;
3562         objset_t *os = NULL;
3563         int dump_all = 1;
3564         int verbose = 0;
3565         int error = 0;
3566         char **searchdirs = NULL;
3567         int nsearch = 0;
3568         char *target;
3569         nvlist_t *policy = NULL;
3570         uint64_t max_txg = UINT64_MAX;
3571         int rewind = ZPOOL_NEVER_REWIND;
3572         char *spa_config_path_env;
3573         boolean_t target_is_spa = B_TRUE;
3574
3575         (void) setrlimit(RLIMIT_NOFILE, &rl);
3576         (void) enable_extended_FILE_stdio(-1, -1);
3577
3578         dprintf_setup(&argc, argv);
3579
3580         /*
3581          * If there is an environment variable SPA_CONFIG_PATH it overrides
3582          * default spa_config_path setting. If -U flag is specified it will
3583          * override this environment variable settings once again.
3584          */
3585         spa_config_path_env = getenv("SPA_CONFIG_PATH");
3586         if (spa_config_path_env != NULL)
3587                 spa_config_path = spa_config_path_env;
3588
3589         while ((c = getopt(argc, argv,
3590             "bcdhilmMI:suCDRSAFLXx:evp:t:U:PG")) != -1) {
3591                 switch (c) {
3592                 case 'b':
3593                 case 'c':
3594                 case 'd':
3595                 case 'h':
3596                 case 'i':
3597                 case 'l':
3598                 case 'm':
3599                 case 's':
3600                 case 'u':
3601                 case 'C':
3602                 case 'D':
3603                 case 'M':
3604                 case 'R':
3605                 case 'S':
3606                 case 'G':
3607                         dump_opt[c]++;
3608                         dump_all = 0;
3609                         break;
3610                 case 'A':
3611                 case 'F':
3612                 case 'L':
3613                 case 'X':
3614                 case 'e':
3615                 case 'P':
3616                         dump_opt[c]++;
3617                         break;
3618                 case 'I':
3619                         max_inflight = strtoull(optarg, NULL, 0);
3620                         if (max_inflight == 0) {
3621                                 (void) fprintf(stderr, "maximum number "
3622                                     "of inflight I/Os must be greater "
3623                                     "than 0\n");
3624                                 usage();
3625                         }
3626                         break;
3627                 case 'p':
3628                         if (searchdirs == NULL) {
3629                                 searchdirs = umem_alloc(sizeof (char *),
3630                                     UMEM_NOFAIL);
3631                         } else {
3632                                 char **tmp = umem_alloc((nsearch + 1) *
3633                                     sizeof (char *), UMEM_NOFAIL);
3634                                 bcopy(searchdirs, tmp, nsearch *
3635                                     sizeof (char *));
3636                                 umem_free(searchdirs,
3637                                     nsearch * sizeof (char *));
3638                                 searchdirs = tmp;
3639                         }
3640                         searchdirs[nsearch++] = optarg;
3641                         break;
3642                 case 't':
3643                         max_txg = strtoull(optarg, NULL, 0);
3644                         if (max_txg < TXG_INITIAL) {
3645                                 (void) fprintf(stderr, "incorrect txg "
3646                                     "specified: %s\n", optarg);
3647                                 usage();
3648                         }
3649                         break;
3650                 case 'U':
3651                         spa_config_path = optarg;
3652                         break;
3653                 case 'v':
3654                         verbose++;
3655                         break;
3656                 case 'x':
3657                         vn_dumpdir = optarg;
3658                         break;
3659                 default:
3660                         usage();
3661                         break;
3662                 }
3663         }
3664
3665         if (!dump_opt['e'] && searchdirs != NULL) {
3666                 (void) fprintf(stderr, "-p option requires use of -e\n");
3667                 usage();
3668         }
3669
3670         /*
3671          * ZDB does not typically re-read blocks; therefore limit the ARC
3672          * to 256 MB, which can be used entirely for metadata.
3673          */
3674         zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
3675
3676         /*
3677          * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
3678          * "zdb -b" uses traversal prefetch which uses async reads.
3679          * For good performance, let several of them be active at once.
3680          */
3681         zfs_vdev_async_read_max_active = 10;
3682
3683         kernel_init(FREAD);
3684         g_zfs = libzfs_init();
3685         if (g_zfs == NULL)
3686                 fatal("Fail to initialize zfs");
3687
3688         if (dump_all)
3689                 verbose = MAX(verbose, 1);
3690
3691         for (c = 0; c < 256; c++) {
3692                 if (dump_all && !strchr("elAFLRSXP", c))
3693                         dump_opt[c] = 1;
3694                 if (dump_opt[c])
3695                         dump_opt[c] += verbose;
3696         }
3697
3698         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3699         zfs_recover = (dump_opt['A'] > 1);
3700
3701         argc -= optind;
3702         argv += optind;
3703
3704         if (argc < 2 && dump_opt['R'])
3705                 usage();
3706         if (argc < 1) {
3707                 if (!dump_opt['e'] && dump_opt['C']) {
3708                         dump_cachefile(spa_config_path);
3709                         return (0);
3710                 }
3711                 usage();
3712         }
3713
3714         if (dump_opt['l']) {
3715                 dump_label(argv[0]);
3716                 return (0);
3717         }
3718
3719         if (dump_opt['X'] || dump_opt['F'])
3720                 rewind = ZPOOL_DO_REWIND |
3721                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3722
3723         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3724             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3725             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3726                 fatal("internal error: %s", strerror(ENOMEM));
3727
3728         error = 0;
3729         target = argv[0];
3730
3731         if (dump_opt['e']) {
3732                 nvlist_t *cfg = NULL;
3733                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3734
3735                 error = ENOENT;
3736                 if (name) {
3737                         if (dump_opt['C'] > 1) {
3738                                 (void) printf("\nConfiguration for import:\n");
3739                                 dump_nvlist(cfg, 8);
3740                         }
3741                         if (nvlist_add_nvlist(cfg,
3742                             ZPOOL_REWIND_POLICY, policy) != 0) {
3743                                 fatal("can't open '%s': %s",
3744                                     target, strerror(ENOMEM));
3745                         }
3746                         if ((error = spa_import(name, cfg, NULL,
3747                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3748                                 error = spa_import(name, cfg, NULL,
3749                                     ZFS_IMPORT_VERBATIM);
3750                         }
3751                 }
3752         }
3753
3754         if (strpbrk(target, "/@") != NULL) {
3755                 size_t targetlen;
3756
3757                 target_is_spa = B_FALSE;
3758                 /*
3759                  * Remove any trailing slash.  Later code would get confused
3760                  * by it, but we want to allow it so that "pool/" can
3761                  * indicate that we want to dump the topmost filesystem,
3762                  * rather than the whole pool.
3763                  */
3764                 targetlen = strlen(target);
3765                 if (targetlen != 0 && target[targetlen - 1] == '/')
3766                         target[targetlen - 1] = '\0';
3767         }
3768
3769         if (error == 0) {
3770                 if (target_is_spa || dump_opt['R']) {
3771                         error = spa_open_rewind(target, &spa, FTAG, policy,
3772                             NULL);
3773                         if (error) {
3774                                 /*
3775                                  * If we're missing the log device then
3776                                  * try opening the pool after clearing the
3777                                  * log state.
3778                                  */
3779                                 mutex_enter(&spa_namespace_lock);
3780                                 if ((spa = spa_lookup(target)) != NULL &&
3781                                     spa->spa_log_state == SPA_LOG_MISSING) {
3782                                         spa->spa_log_state = SPA_LOG_CLEAR;
3783                                         error = 0;
3784                                 }
3785                                 mutex_exit(&spa_namespace_lock);
3786
3787                                 if (!error) {
3788                                         error = spa_open_rewind(target, &spa,
3789                                             FTAG, policy, NULL);
3790                                 }
3791                         }
3792                 } else {
3793                         error = dmu_objset_own(target, DMU_OST_ANY,
3794                             B_TRUE, FTAG, &os);
3795                 }
3796         }
3797         nvlist_free(policy);
3798
3799         if (error)
3800                 fatal("can't open '%s': %s", target, strerror(error));
3801
3802         argv++;
3803         argc--;
3804         if (!dump_opt['R']) {
3805                 if (argc > 0) {
3806                         zopt_objects = argc;
3807                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3808                         for (i = 0; i < zopt_objects; i++) {
3809                                 errno = 0;
3810                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3811                                 if (zopt_object[i] == 0 && errno != 0)
3812                                         fatal("bad number %s: %s",
3813                                             argv[i], strerror(errno));
3814                         }
3815                 }
3816                 if (os != NULL) {
3817                         dump_dir(os);
3818                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3819                         dump_dir(spa->spa_meta_objset);
3820                 } else {
3821                         dump_zpool(spa);
3822                 }
3823         } else {
3824                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3825                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3826                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3827                 flagbits['e'] = ZDB_FLAG_BSWAP;
3828                 flagbits['g'] = ZDB_FLAG_GBH;
3829                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3830                 flagbits['p'] = ZDB_FLAG_PHYS;
3831                 flagbits['r'] = ZDB_FLAG_RAW;
3832
3833                 for (i = 0; i < argc; i++)
3834                         zdb_read_block(argv[i], spa);
3835         }
3836
3837         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3838
3839         fuid_table_destroy();
3840         sa_loaded = B_FALSE;
3841
3842         dump_debug_buffer();
3843
3844         libzfs_fini(g_zfs);
3845         kernel_fini();
3846
3847         return (0);
3848 }