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 #include <libcmdutils.h>
  64 #undef verify
  65 #include <libzfs.h>
  66
  67 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?        \
  68         zio_compress_table[(idx)].ci_name : "UNKNOWN")
  69 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?        \
  70         zio_checksum_table[(idx)].ci_name : "UNKNOWN")
  71 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?     \
  72         dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?  \
  73         dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
  74 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :             \
  75         (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \
  76         DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
  77
  78 #ifndef lint
  79 extern boolean_t zfs_recover;
  80 extern uint64_t zfs_arc_max, zfs_arc_meta_limit;
  81 extern int zfs_vdev_async_read_max_active;
  82 #else
  83 boolean_t zfs_recover;
  84 uint64_t zfs_arc_max, zfs_arc_meta_limit;
  85 int zfs_vdev_async_read_max_active;
  86 #endif
  87
  88 const char cmdname[] = "zdb";
  89 uint8_t dump_opt[256];
  90
  91 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  92
  93 extern void dump_intent_log(zilog_t *);
  94 uint64_t *zopt_object = NULL;
  95 int zopt_objects = 0;
  96 libzfs_handle_t *g_zfs;
  97 uint64_t max_inflight = 1000;
  98
  99 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *);
 100
 101 /*
 102  * These libumem hooks provide a reasonable set of defaults for the allocator's
 103  * debugging facilities.
 104  */
 105 const char *
 106 _umem_debug_init()
 107 {
 108         return ("default,verbose"); /* $UMEM_DEBUG setting */
 109 }
 110
 111 const char *
 112 _umem_logging_init(void)
 113 {
 114         return ("fail,contents"); /* $UMEM_LOGGING setting */
 115 }
 116
 117 static void
 118 usage(void)
 119 {
 120         (void) fprintf(stderr,
 121             "Usage: %s [-CumMdibcsDvhLXFPAG] [-t txg] [-e [-p path...]] "
 122             "[-U config] [-I inflight I/Os] [-x dumpdir] [-o var=value] "
 123             "poolname [object...]\n"
 124             "       %s [-divPA] [-e -p path...] [-U config] dataset "
 125             "[object...]\n"
 126             "       %s -mM [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
 127             "poolname [vdev [metaslab...]]\n"
 128             "       %s -R [-A] [-e [-p path...]] poolname "
 129             "vdev:offset:size[:flags]\n"
 130             "       %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
 131             "       %s -l [-uA] device\n"
 132             "       %s -C [-A] [-U config]\n\n",
 133             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 134
 135         (void) fprintf(stderr, "    Dataset name must include at least one "
 136             "separator character '/' or '@'\n");
 137         (void) fprintf(stderr, "    If dataset name is specified, only that "
 138             "dataset is dumped\n");
 139         (void) fprintf(stderr, "    If object numbers are specified, only "
 140             "those objects are dumped\n\n");
 141         (void) fprintf(stderr, "    Options to control amount of output:\n");
 142         (void) fprintf(stderr, "        -u uberblock\n");
 143         (void) fprintf(stderr, "        -d dataset(s)\n");
 144         (void) fprintf(stderr, "        -i intent logs\n");
 145         (void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
 146         (void) fprintf(stderr, "        -h pool history\n");
 147         (void) fprintf(stderr, "        -b block statistics\n");
 148         (void) fprintf(stderr, "        -m metaslabs\n");
 149         (void) fprintf(stderr, "        -M metaslab groups\n");
 150         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 151             "all data) blocks\n");
 152         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 153         (void) fprintf(stderr, "        -D dedup statistics\n");
 154         (void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
 155         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 156         (void) fprintf(stderr, "        -l dump label contents\n");
 157         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 158             "load spacemaps)\n");
 159         (void) fprintf(stderr, "        -R read and display block from a "
 160             "device\n\n");
 161         (void) fprintf(stderr, "    Below options are intended for use "
 162             "with other options:\n");
 163         (void) fprintf(stderr, "        -A ignore assertions (-A), enable "
 164             "panic recovery (-AA) or both (-AAA)\n");
 165         (void) fprintf(stderr, "        -F attempt automatic rewind within "
 166             "safe range of transaction groups\n");
 167         (void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
 168             "cachefile\n");
 169         (void) fprintf(stderr, "        -X attempt extreme rewind (does not "
 170             "work with dataset)\n");
 171         (void) fprintf(stderr, "        -e pool is exported/destroyed/"
 172             "has altroot/not in a cachefile\n");
 173         (void) fprintf(stderr, "        -p <path> -- use one or more with "
 174             "-e to specify path to vdev dir\n");
 175         (void) fprintf(stderr, "        -x <dumpdir> -- "
 176             "dump all read blocks into specified directory\n");
 177         (void) fprintf(stderr, "        -P print numbers in parseable form\n");
 178         (void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
 179             "searching for uberblocks\n");
 180         (void) fprintf(stderr, "        -I <number of inflight I/Os> -- "
 181             "specify the maximum number of "
 182             "checksumming I/Os [default is 200]\n");
 183         (void) fprintf(stderr, "        -G dump zfs_dbgmsg buffer before "
 184             "exiting\n");
 185         (void) fprintf(stderr, "        -o <variable>=<value> set global "
 186             "variable to an unsigned 32-bit integer value\n");
 187         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 188             "to make only that option verbose\n");
 189         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 190         exit(1);
 191 }
 192
 193 static void
 194 dump_debug_buffer()
 195 {
 196         if (dump_opt['G']) {
 197                 (void) printf("\n");
 198                 zfs_dbgmsg_print("zdb");
 199         }
 200 }
 201
 202 /*
 203  * Called for usage errors that are discovered after a call to spa_open(),
 204  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 205  */
 206
 207 static void
 208 fatal(const char *fmt, ...)
 209 {
 210         va_list ap;
 211
 212         va_start(ap, fmt);
 213         (void) fprintf(stderr, "%s: ", cmdname);
 214         (void) vfprintf(stderr, fmt, ap);
 215         va_end(ap);
 216         (void) fprintf(stderr, "\n");
 217
 218         dump_debug_buffer();
 219
 220         exit(1);
 221 }
 222
 223 /* ARGSUSED */
 224 static void
 225 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 226 {
 227         nvlist_t *nv;
 228         size_t nvsize = *(uint64_t *)data;
 229         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 230
 231         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 232
 233         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 234
 235         umem_free(packed, nvsize);
 236
 237         dump_nvlist(nv, 8);
 238
 239         nvlist_free(nv);
 240 }
 241
 242 /* ARGSUSED */
 243 static void
 244 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
 245 {
 246         spa_history_phys_t *shp = data;
 247
 248         if (shp == NULL)
 249                 return;
 250
 251         (void) printf("\t\tpool_create_len = %llu\n",
 252             (u_longlong_t)shp->sh_pool_create_len);
 253         (void) printf("\t\tphys_max_off = %llu\n",
 254             (u_longlong_t)shp->sh_phys_max_off);
 255         (void) printf("\t\tbof = %llu\n",
 256             (u_longlong_t)shp->sh_bof);
 257         (void) printf("\t\teof = %llu\n",
 258             (u_longlong_t)shp->sh_eof);
 259         (void) printf("\t\trecords_lost = %llu\n",
 260             (u_longlong_t)shp->sh_records_lost);
 261 }
 262
 263 static void
 264 zdb_nicenum(uint64_t num, char *buf, size_t buflen)
 265 {
 266         if (dump_opt['P'])
 267                 (void) snprintf(buf, buflen, "%llu", (longlong_t)num);
 268         else
 269                 nicenum(num, buf, sizeof (buf));
 270 }
 271
 272 const char histo_stars[] = "****************************************";
 273 const int histo_width = sizeof (histo_stars) - 1;
 274
 275 static void
 276 dump_histogram(const uint64_t *histo, int size, int offset)
 277 {
 278         int i;
 279         int minidx = size - 1;
 280         int maxidx = 0;
 281         uint64_t max = 0;
 282
 283         for (i = 0; i < size; i++) {
 284                 if (histo[i] > max)
 285                         max = histo[i];
 286                 if (histo[i] > 0 && i > maxidx)
 287                         maxidx = i;
 288                 if (histo[i] > 0 && i < minidx)
 289                         minidx = i;
 290         }
 291
 292         if (max < histo_width)
 293                 max = histo_width;
 294
 295         for (i = minidx; i <= maxidx; i++) {
 296                 (void) printf("\t\t\t%3u: %6llu %s\n",
 297                     i + offset, (u_longlong_t)histo[i],
 298                     &histo_stars[(max - histo[i]) * histo_width / max]);
 299         }
 300 }
 301
 302 static void
 303 dump_zap_stats(objset_t *os, uint64_t object)
 304 {
 305         int error;
 306         zap_stats_t zs;
 307
 308         error = zap_get_stats(os, object, &zs);
 309         if (error)
 310                 return;
 311
 312         if (zs.zs_ptrtbl_len == 0) {
 313                 ASSERT(zs.zs_num_blocks == 1);
 314                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 315                     (u_longlong_t)zs.zs_blocksize,
 316                     (u_longlong_t)zs.zs_num_entries);
 317                 return;
 318         }
 319
 320         (void) printf("\tFat ZAP stats:\n");
 321
 322         (void) printf("\t\tPointer table:\n");
 323         (void) printf("\t\t\t%llu elements\n",
 324             (u_longlong_t)zs.zs_ptrtbl_len);
 325         (void) printf("\t\t\tzt_blk: %llu\n",
 326             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 327         (void) printf("\t\t\tzt_numblks: %llu\n",
 328             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 329         (void) printf("\t\t\tzt_shift: %llu\n",
 330             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 331         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 332             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 333         (void) printf("\t\t\tzt_nextblk: %llu\n",
 334             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 335
 336         (void) printf("\t\tZAP entries: %llu\n",
 337             (u_longlong_t)zs.zs_num_entries);
 338         (void) printf("\t\tLeaf blocks: %llu\n",
 339             (u_longlong_t)zs.zs_num_leafs);
 340         (void) printf("\t\tTotal blocks: %llu\n",
 341             (u_longlong_t)zs.zs_num_blocks);
 342         (void) printf("\t\tzap_block_type: 0x%llx\n",
 343             (u_longlong_t)zs.zs_block_type);
 344         (void) printf("\t\tzap_magic: 0x%llx\n",
 345             (u_longlong_t)zs.zs_magic);
 346         (void) printf("\t\tzap_salt: 0x%llx\n",
 347             (u_longlong_t)zs.zs_salt);
 348
 349         (void) printf("\t\tLeafs with 2^n pointers:\n");
 350         dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
 351
 352         (void) printf("\t\tBlocks with n*5 entries:\n");
 353         dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
 354
 355         (void) printf("\t\tBlocks n/10 full:\n");
 356         dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
 357
 358         (void) printf("\t\tEntries with n chunks:\n");
 359         dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
 360
 361         (void) printf("\t\tBuckets with n entries:\n");
 362         dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
 363 }
 364
 365 /*ARGSUSED*/
 366 static void
 367 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 368 {
 369 }
 370
 371 /*ARGSUSED*/
 372 static void
 373 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
 374 {
 375         (void) printf("\tUNKNOWN OBJECT TYPE\n");
 376 }
 377
 378 /*ARGSUSED*/
 379 void
 380 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 381 {
 382 }
 383
 384 /*ARGSUSED*/
 385 static void
 386 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 387 {
 388 }
 389
 390 /*ARGSUSED*/
 391 static void
 392 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 393 {
 394         zap_cursor_t zc;
 395         zap_attribute_t attr;
 396         void *prop;
 397         int i;
 398
 399         dump_zap_stats(os, object);
 400         (void) printf("\n");
 401
 402         for (zap_cursor_init(&zc, os, object);
 403             zap_cursor_retrieve(&zc, &attr) == 0;
 404             zap_cursor_advance(&zc)) {
 405                 (void) printf("\t\t%s = ", attr.za_name);
 406                 if (attr.za_num_integers == 0) {
 407                         (void) printf("\n");
 408                         continue;
 409                 }
 410                 prop = umem_zalloc(attr.za_num_integers *
 411                     attr.za_integer_length, UMEM_NOFAIL);
 412                 (void) zap_lookup(os, object, attr.za_name,
 413                     attr.za_integer_length, attr.za_num_integers, prop);
 414                 if (attr.za_integer_length == 1) {
 415                         (void) printf("%s", (char *)prop);
 416                 } else {
 417                         for (i = 0; i < attr.za_num_integers; i++) {
 418                                 switch (attr.za_integer_length) {
 419                                 case 2:
 420                                         (void) printf("%u ",
 421                                             ((uint16_t *)prop)[i]);
 422                                         break;
 423                                 case 4:
 424                                         (void) printf("%u ",
 425                                             ((uint32_t *)prop)[i]);
 426                                         break;
 427                                 case 8:
 428                                         (void) printf("%lld ",
 429                                             (u_longlong_t)((int64_t *)prop)[i]);
 430                                         break;
 431                                 }
 432                         }
 433                 }
 434                 (void) printf("\n");
 435                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 436         }
 437         zap_cursor_fini(&zc);
 438 }
 439
 440 static void
 441 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size)
 442 {
 443         bpobj_phys_t *bpop = data;
 444         char bytes[32], comp[32], uncomp[32];
 445
 446         /* make sure the output won't get truncated */
 447         CTASSERT(sizeof (bytes) >= NN_NUMBUF_SZ);
 448         CTASSERT(sizeof (comp) >= NN_NUMBUF_SZ);
 449         CTASSERT(sizeof (uncomp) >= NN_NUMBUF_SZ);
 450
 451         if (bpop == NULL)
 452                 return;
 453
 454         zdb_nicenum(bpop->bpo_bytes, bytes, sizeof (bytes));
 455         zdb_nicenum(bpop->bpo_comp, comp, sizeof (comp));
 456         zdb_nicenum(bpop->bpo_uncomp, uncomp, sizeof (uncomp));
 457
 458         (void) printf("\t\tnum_blkptrs = %llu\n",
 459             (u_longlong_t)bpop->bpo_num_blkptrs);
 460         (void) printf("\t\tbytes = %s\n", bytes);
 461         if (size >= BPOBJ_SIZE_V1) {
 462                 (void) printf("\t\tcomp = %s\n", comp);
 463                 (void) printf("\t\tuncomp = %s\n", uncomp);
 464         }
 465         if (size >= sizeof (*bpop)) {
 466                 (void) printf("\t\tsubobjs = %llu\n",
 467                     (u_longlong_t)bpop->bpo_subobjs);
 468                 (void) printf("\t\tnum_subobjs = %llu\n",
 469                     (u_longlong_t)bpop->bpo_num_subobjs);
 470         }
 471
 472         if (dump_opt['d'] < 5)
 473                 return;
 474
 475         for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) {
 476                 char blkbuf[BP_SPRINTF_LEN];
 477                 blkptr_t bp;
 478
 479                 int err = dmu_read(os, object,
 480                     i * sizeof (bp), sizeof (bp), &bp, 0);
 481                 if (err != 0) {
 482                         (void) printf("got error %u from dmu_read\n", err);
 483                         break;
 484                 }
 485                 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp);
 486                 (void) printf("\t%s\n", blkbuf);
 487         }
 488 }
 489
 490 /* ARGSUSED */
 491 static void
 492 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size)
 493 {
 494         dmu_object_info_t doi;
 495
 496         VERIFY0(dmu_object_info(os, object, &doi));
 497         uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP);
 498
 499         int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0);
 500         if (err != 0) {
 501                 (void) printf("got error %u from dmu_read\n", err);
 502                 kmem_free(subobjs, doi.doi_max_offset);
 503                 return;
 504         }
 505
 506         int64_t last_nonzero = -1;
 507         for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) {
 508                 if (subobjs[i] != 0)
 509                         last_nonzero = i;
 510         }
 511
 512         for (int64_t i = 0; i <= last_nonzero; i++) {
 513                 (void) printf("\t%llu\n", (longlong_t)subobjs[i]);
 514         }
 515         kmem_free(subobjs, doi.doi_max_offset);
 516 }
 517
 518 /*ARGSUSED*/
 519 static void
 520 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
 521 {
 522         dump_zap_stats(os, object);
 523         /* contents are printed elsewhere, properly decoded */
 524 }
 525
 526 /*ARGSUSED*/
 527 static void
 528 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
 529 {
 530         zap_cursor_t zc;
 531         zap_attribute_t attr;
 532
 533         dump_zap_stats(os, object);
 534         (void) printf("\n");
 535
 536         for (zap_cursor_init(&zc, os, object);
 537             zap_cursor_retrieve(&zc, &attr) == 0;
 538             zap_cursor_advance(&zc)) {
 539                 (void) printf("\t\t%s = ", attr.za_name);
 540                 if (attr.za_num_integers == 0) {
 541                         (void) printf("\n");
 542                         continue;
 543                 }
 544                 (void) printf(" %llx : [%d:%d:%d]\n",
 545                     (u_longlong_t)attr.za_first_integer,
 546                     (int)ATTR_LENGTH(attr.za_first_integer),
 547                     (int)ATTR_BSWAP(attr.za_first_integer),
 548                     (int)ATTR_NUM(attr.za_first_integer));
 549         }
 550         zap_cursor_fini(&zc);
 551 }
 552
 553 /*ARGSUSED*/
 554 static void
 555 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
 556 {
 557         zap_cursor_t zc;
 558         zap_attribute_t attr;
 559         uint16_t *layout_attrs;
 560         int i;
 561
 562         dump_zap_stats(os, object);
 563         (void) printf("\n");
 564
 565         for (zap_cursor_init(&zc, os, object);
 566             zap_cursor_retrieve(&zc, &attr) == 0;
 567             zap_cursor_advance(&zc)) {
 568                 (void) printf("\t\t%s = [", attr.za_name);
 569                 if (attr.za_num_integers == 0) {
 570                         (void) printf("\n");
 571                         continue;
 572                 }
 573
 574                 VERIFY(attr.za_integer_length == 2);
 575                 layout_attrs = umem_zalloc(attr.za_num_integers *
 576                     attr.za_integer_length, UMEM_NOFAIL);
 577
 578                 VERIFY(zap_lookup(os, object, attr.za_name,
 579                     attr.za_integer_length,
 580                     attr.za_num_integers, layout_attrs) == 0);
 581
 582                 for (i = 0; i != attr.za_num_integers; i++)
 583                         (void) printf(" %d ", (int)layout_attrs[i]);
 584                 (void) printf("]\n");
 585                 umem_free(layout_attrs,
 586                     attr.za_num_integers * attr.za_integer_length);
 587         }
 588         zap_cursor_fini(&zc);
 589 }
 590
 591 /*ARGSUSED*/
 592 static void
 593 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 594 {
 595         zap_cursor_t zc;
 596         zap_attribute_t attr;
 597         const char *typenames[] = {
 598                 /* 0 */ "not specified",
 599                 /* 1 */ "FIFO",
 600                 /* 2 */ "Character Device",
 601                 /* 3 */ "3 (invalid)",
 602                 /* 4 */ "Directory",
 603                 /* 5 */ "5 (invalid)",
 604                 /* 6 */ "Block Device",
 605                 /* 7 */ "7 (invalid)",
 606                 /* 8 */ "Regular File",
 607                 /* 9 */ "9 (invalid)",
 608                 /* 10 */ "Symbolic Link",
 609                 /* 11 */ "11 (invalid)",
 610                 /* 12 */ "Socket",
 611                 /* 13 */ "Door",
 612                 /* 14 */ "Event Port",
 613                 /* 15 */ "15 (invalid)",
 614         };
 615
 616         dump_zap_stats(os, object);
 617         (void) printf("\n");
 618
 619         for (zap_cursor_init(&zc, os, object);
 620             zap_cursor_retrieve(&zc, &attr) == 0;
 621             zap_cursor_advance(&zc)) {
 622                 (void) printf("\t\t%s = %lld (type: %s)\n",
 623                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 624                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 625         }
 626         zap_cursor_fini(&zc);
 627 }
 628
 629 int
 630 get_dtl_refcount(vdev_t *vd)
 631 {
 632         int refcount = 0;
 633
 634         if (vd->vdev_ops->vdev_op_leaf) {
 635                 space_map_t *sm = vd->vdev_dtl_sm;
 636
 637                 if (sm != NULL &&
 638                     sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 639                         return (1);
 640                 return (0);
 641         }
 642
 643         for (int c = 0; c < vd->vdev_children; c++)
 644                 refcount += get_dtl_refcount(vd->vdev_child[c]);
 645         return (refcount);
 646 }
 647
 648 int
 649 get_metaslab_refcount(vdev_t *vd)
 650 {
 651         int refcount = 0;
 652
 653         if (vd->vdev_top == vd && !vd->vdev_removing) {
 654                 for (int m = 0; m < vd->vdev_ms_count; m++) {
 655                         space_map_t *sm = vd->vdev_ms[m]->ms_sm;
 656
 657                         if (sm != NULL &&
 658                             sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
 659                                 refcount++;
 660                 }
 661         }
 662         for (int c = 0; c < vd->vdev_children; c++)
 663                 refcount += get_metaslab_refcount(vd->vdev_child[c]);
 664
 665         return (refcount);
 666 }
 667
 668 static int
 669 verify_spacemap_refcounts(spa_t *spa)
 670 {
 671         uint64_t expected_refcount = 0;
 672         uint64_t actual_refcount;
 673
 674         (void) feature_get_refcount(spa,
 675             &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
 676             &expected_refcount);
 677         actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
 678         actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
 679
 680         if (expected_refcount != actual_refcount) {
 681                 (void) printf("space map refcount mismatch: expected %lld != "
 682                     "actual %lld\n",
 683                     (longlong_t)expected_refcount,
 684                     (longlong_t)actual_refcount);
 685                 return (2);
 686         }
 687         return (0);
 688 }
 689
 690 static void
 691 dump_spacemap(objset_t *os, space_map_t *sm)
 692 {
 693         uint64_t alloc, offset, entry;
 694         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 695                             "INVALID", "INVALID", "INVALID", "INVALID" };
 696
 697         if (sm == NULL)
 698                 return;
 699
 700         /*
 701          * Print out the freelist entries in both encoded and decoded form.
 702          */
 703         alloc = 0;
 704         for (offset = 0; offset < space_map_length(sm);
 705             offset += sizeof (entry)) {
 706                 uint8_t mapshift = sm->sm_shift;
 707
 708                 VERIFY0(dmu_read(os, space_map_object(sm), offset,
 709                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 710                 if (SM_DEBUG_DECODE(entry)) {
 711
 712                         (void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
 713                             (u_longlong_t)(offset / sizeof (entry)),
 714                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 715                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 716                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 717                 } else {
 718                         (void) printf("\t    [%6llu]    %c  range:"
 719                             " %010llx-%010llx  size: %06llx\n",
 720                             (u_longlong_t)(offset / sizeof (entry)),
 721                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 722                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 723                             mapshift) + sm->sm_start),
 724                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 725                             mapshift) + sm->sm_start +
 726                             (SM_RUN_DECODE(entry) << mapshift)),
 727                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 728                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 729                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 730                         else
 731                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 732                 }
 733         }
 734         if (alloc != space_map_allocated(sm)) {
 735                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 736                     "with space map summary (%llu)\n",
 737                     (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
 738         }
 739 }
 740
 741 static void
 742 dump_metaslab_stats(metaslab_t *msp)
 743 {
 744         char maxbuf[32];
 745         range_tree_t *rt = msp->ms_tree;
 746         avl_tree_t *t = &msp->ms_size_tree;
 747         int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
 748
 749         /* max sure nicenum has enough space */
 750         CTASSERT(sizeof (maxbuf) >= NN_NUMBUF_SZ);
 751
 752         zdb_nicenum(metaslab_block_maxsize(msp), maxbuf, sizeof (maxbuf));
 753
 754         (void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
 755             "segments", avl_numnodes(t), "maxsize", maxbuf,
 756             "freepct", free_pct);
 757         (void) printf("\tIn-memory histogram:\n");
 758         dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 759 }
 760
 761 static void
 762 dump_metaslab(metaslab_t *msp)
 763 {
 764         vdev_t *vd = msp->ms_group->mg_vd;
 765         spa_t *spa = vd->vdev_spa;
 766         space_map_t *sm = msp->ms_sm;
 767         char freebuf[32];
 768
 769         zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf,
 770             sizeof (freebuf));
 771
 772         (void) printf(
 773             "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
 774             (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
 775             (u_longlong_t)space_map_object(sm), freebuf);
 776
 777         if (dump_opt['m'] > 2 && !dump_opt['L']) {
 778                 mutex_enter(&msp->ms_lock);
 779                 metaslab_load_wait(msp);
 780                 if (!msp->ms_loaded) {
 781                         VERIFY0(metaslab_load(msp));
 782                         range_tree_stat_verify(msp->ms_tree);
 783                 }
 784                 dump_metaslab_stats(msp);
 785                 metaslab_unload(msp);
 786                 mutex_exit(&msp->ms_lock);
 787         }
 788
 789         if (dump_opt['m'] > 1 && sm != NULL &&
 790             spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
 791                 /*
 792                  * The space map histogram represents free space in chunks
 793                  * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
 794                  */
 795                 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n",
 796                     (u_longlong_t)msp->ms_fragmentation);
 797                 dump_histogram(sm->sm_phys->smp_histogram,
 798                     SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift);
 799         }
 800
 801         if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
 802                 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
 803
 804                 mutex_enter(&msp->ms_lock);
 805                 dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
 806                 mutex_exit(&msp->ms_lock);
 807         }
 808 }
 809
 810 static void
 811 print_vdev_metaslab_header(vdev_t *vd)
 812 {
 813         (void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
 814             (u_longlong_t)vd->vdev_id,
 815             "metaslabs", (u_longlong_t)vd->vdev_ms_count,
 816             "offset", "spacemap", "free");
 817         (void) printf("\t%15s   %19s   %15s   %10s\n",
 818             "---------------", "-------------------",
 819             "---------------", "-------------");
 820 }
 821
 822 static void
 823 dump_metaslab_groups(spa_t *spa)
 824 {
 825         vdev_t *rvd = spa->spa_root_vdev;
 826         metaslab_class_t *mc = spa_normal_class(spa);
 827         uint64_t fragmentation;
 828
 829         metaslab_class_histogram_verify(mc);
 830
 831         for (int c = 0; c < rvd->vdev_children; c++) {
 832                 vdev_t *tvd = rvd->vdev_child[c];
 833                 metaslab_group_t *mg = tvd->vdev_mg;
 834
 835                 if (mg->mg_class != mc)
 836                         continue;
 837
 838                 metaslab_group_histogram_verify(mg);
 839                 mg->mg_fragmentation = metaslab_group_fragmentation(mg);
 840
 841                 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t"
 842                     "fragmentation",
 843                     (u_longlong_t)tvd->vdev_id,
 844                     (u_longlong_t)tvd->vdev_ms_count);
 845                 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) {
 846                         (void) printf("%3s\n", "-");
 847                 } else {
 848                         (void) printf("%3llu%%\n",
 849                             (u_longlong_t)mg->mg_fragmentation);
 850                 }
 851                 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 852         }
 853
 854         (void) printf("\tpool %s\tfragmentation", spa_name(spa));
 855         fragmentation = metaslab_class_fragmentation(mc);
 856         if (fragmentation == ZFS_FRAG_INVALID)
 857                 (void) printf("\t%3s\n", "-");
 858         else
 859                 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation);
 860         dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
 861 }
 862
 863 static void
 864 dump_metaslabs(spa_t *spa)
 865 {
 866         vdev_t *vd, *rvd = spa->spa_root_vdev;
 867         uint64_t m, c = 0, children = rvd->vdev_children;
 868
 869         (void) printf("\nMetaslabs:\n");
 870
 871         if (!dump_opt['d'] && zopt_objects > 0) {
 872                 c = zopt_object[0];
 873
 874                 if (c >= children)
 875                         (void) fatal("bad vdev id: %llu", (u_longlong_t)c);
 876
 877                 if (zopt_objects > 1) {
 878                         vd = rvd->vdev_child[c];
 879                         print_vdev_metaslab_header(vd);
 880
 881                         for (m = 1; m < zopt_objects; m++) {
 882                                 if (zopt_object[m] < vd->vdev_ms_count)
 883                                         dump_metaslab(
 884                                             vd->vdev_ms[zopt_object[m]]);
 885                                 else
 886                                         (void) fprintf(stderr, "bad metaslab "
 887                                             "number %llu\n",
 888                                             (u_longlong_t)zopt_object[m]);
 889                         }
 890                         (void) printf("\n");
 891                         return;
 892                 }
 893                 children = c + 1;
 894         }
 895         for (; c < children; c++) {
 896                 vd = rvd->vdev_child[c];
 897                 print_vdev_metaslab_header(vd);
 898
 899                 for (m = 0; m < vd->vdev_ms_count; m++)
 900                         dump_metaslab(vd->vdev_ms[m]);
 901                 (void) printf("\n");
 902         }
 903 }
 904
 905 static void
 906 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
 907 {
 908         const ddt_phys_t *ddp = dde->dde_phys;
 909         const ddt_key_t *ddk = &dde->dde_key;
 910         char *types[4] = { "ditto", "single", "double", "triple" };
 911         char blkbuf[BP_SPRINTF_LEN];
 912         blkptr_t blk;
 913
 914         for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
 915                 if (ddp->ddp_phys_birth == 0)
 916                         continue;
 917                 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
 918                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk);
 919                 (void) printf("index %llx refcnt %llu %s %s\n",
 920                     (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
 921                     types[p], blkbuf);
 922         }
 923 }
 924
 925 static void
 926 dump_dedup_ratio(const ddt_stat_t *dds)
 927 {
 928         double rL, rP, rD, D, dedup, compress, copies;
 929
 930         if (dds->dds_blocks == 0)
 931                 return;
 932
 933         rL = (double)dds->dds_ref_lsize;
 934         rP = (double)dds->dds_ref_psize;
 935         rD = (double)dds->dds_ref_dsize;
 936         D = (double)dds->dds_dsize;
 937
 938         dedup = rD / D;
 939         compress = rL / rP;
 940         copies = rD / rP;
 941
 942         (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
 943             "dedup * compress / copies = %.2f\n\n",
 944             dedup, compress, copies, dedup * compress / copies);
 945 }
 946
 947 static void
 948 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
 949 {
 950         char name[DDT_NAMELEN];
 951         ddt_entry_t dde;
 952         uint64_t walk = 0;
 953         dmu_object_info_t doi;
 954         uint64_t count, dspace, mspace;
 955         int error;
 956
 957         error = ddt_object_info(ddt, type, class, &doi);
 958
 959         if (error == ENOENT)
 960                 return;
 961         ASSERT(error == 0);
 962
 963         error = ddt_object_count(ddt, type, class, &count);
 964         ASSERT(error == 0);
 965         if (count == 0)
 966                 return;
 967
 968         dspace = doi.doi_physical_blocks_512 << 9;
 969         mspace = doi.doi_fill_count * doi.doi_data_block_size;
 970
 971         ddt_object_name(ddt, type, class, name);
 972
 973         (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
 974             name,
 975             (u_longlong_t)count,
 976             (u_longlong_t)(dspace / count),
 977             (u_longlong_t)(mspace / count));
 978
 979         if (dump_opt['D'] < 3)
 980                 return;
 981
 982         zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
 983
 984         if (dump_opt['D'] < 4)
 985                 return;
 986
 987         if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
 988                 return;
 989
 990         (void) printf("%s contents:\n\n", name);
 991
 992         while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
 993                 dump_dde(ddt, &dde, walk);
 994
 995         ASSERT(error == ENOENT);
 996
 997         (void) printf("\n");
 998 }
 999
1000 static void
1001 dump_all_ddts(spa_t *spa)
1002 {
1003         ddt_histogram_t ddh_total = { 0 };
1004         ddt_stat_t dds_total = { 0 };
1005
1006         for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
1007                 ddt_t *ddt = spa->spa_ddt[c];
1008                 for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
1009                         for (enum ddt_class class = 0; class < DDT_CLASSES;
1010                             class++) {
1011                                 dump_ddt(ddt, type, class);
1012                         }
1013                 }
1014         }
1015
1016         ddt_get_dedup_stats(spa, &dds_total);
1017
1018         if (dds_total.dds_blocks == 0) {
1019                 (void) printf("All DDTs are empty\n");
1020                 return;
1021         }
1022
1023         (void) printf("\n");
1024
1025         if (dump_opt['D'] > 1) {
1026                 (void) printf("DDT histogram (aggregated over all DDTs):\n");
1027                 ddt_get_dedup_histogram(spa, &ddh_total);
1028                 zpool_dump_ddt(&dds_total, &ddh_total);
1029         }
1030
1031         dump_dedup_ratio(&dds_total);
1032 }
1033
1034 static void
1035 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
1036 {
1037         char *prefix = arg;
1038
1039         (void) printf("%s [%llu,%llu) length %llu\n",
1040             prefix,
1041             (u_longlong_t)start,
1042             (u_longlong_t)(start + size),
1043             (u_longlong_t)(size));
1044 }
1045
1046 static void
1047 dump_dtl(vdev_t *vd, int indent)
1048 {
1049         spa_t *spa = vd->vdev_spa;
1050         boolean_t required;
1051         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
1052         char prefix[256];
1053
1054         spa_vdev_state_enter(spa, SCL_NONE);
1055         required = vdev_dtl_required(vd);
1056         (void) spa_vdev_state_exit(spa, NULL, 0);
1057
1058         if (indent == 0)
1059                 (void) printf("\nDirty time logs:\n\n");
1060
1061         (void) printf("\t%*s%s [%s]\n", indent, "",
1062             vd->vdev_path ? vd->vdev_path :
1063             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
1064             required ? "DTL-required" : "DTL-expendable");
1065
1066         for (int t = 0; t < DTL_TYPES; t++) {
1067                 range_tree_t *rt = vd->vdev_dtl[t];
1068                 if (range_tree_space(rt) == 0)
1069                         continue;
1070                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
1071                     indent + 2, "", name[t]);
1072                 mutex_enter(rt->rt_lock);
1073                 range_tree_walk(rt, dump_dtl_seg, prefix);
1074                 mutex_exit(rt->rt_lock);
1075                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
1076                         dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
1077         }
1078
1079         for (int c = 0; c < vd->vdev_children; c++)
1080                 dump_dtl(vd->vdev_child[c], indent + 4);
1081 }
1082
1083 /* from spa_history.c: spa_history_create_obj() */
1084 #define HIS_BUF_LEN_DEF (128 << 10)
1085 #define HIS_BUF_LEN_MAX (1 << 30)
1086
1087 static void
1088 dump_history(spa_t *spa)
1089 {
1090         nvlist_t **events = NULL;
1091         char *buf = NULL;
1092         uint64_t bufsize = HIS_BUF_LEN_DEF;
1093         uint64_t resid, len, off = 0;
1094         uint_t num = 0;
1095         int error;
1096         time_t tsec;
1097         struct tm t;
1098         char tbuf[30];
1099         char internalstr[MAXPATHLEN];
1100
1101         if ((buf = malloc(bufsize)) == NULL)
1102                 (void) fprintf(stderr, "Unable to read history: "
1103                     "out of memory\n");
1104         do {
1105                 len = bufsize;
1106
1107                 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
1108                         (void) fprintf(stderr, "Unable to read history: "
1109                             "error %d\n", error);
1110                         return;
1111                 }
1112
1113                 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
1114                         break;
1115                 off -= resid;
1116
1117                 /*
1118                  * If the history block is too big, double the buffer
1119                  * size and try again.
1120                  */
1121                 if (resid == len) {
1122                         free(buf);
1123                         buf = NULL;
1124
1125                         bufsize <<= 1;
1126                         if ((bufsize >= HIS_BUF_LEN_MAX) ||
1127                             ((buf = malloc(bufsize)) == NULL)) {
1128                                 (void) fprintf(stderr, "Unable to read history: "
1129                                     "out of memory\n");
1130                                 return;
1131                         }
1132                 }
1133         } while (len != 0);
1134         free(buf);
1135
1136         (void) printf("\nHistory:\n");
1137         for (int i = 0; i < num; i++) {
1138                 uint64_t time, txg, ievent;
1139                 char *cmd, *intstr;
1140                 boolean_t printed = B_FALSE;
1141
1142                 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
1143                     &time) != 0)
1144                         goto next;
1145                 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
1146                     &cmd) != 0) {
1147                         if (nvlist_lookup_uint64(events[i],
1148                             ZPOOL_HIST_INT_EVENT, &ievent) != 0)
1149                                 goto next;
1150                         verify(nvlist_lookup_uint64(events[i],
1151                             ZPOOL_HIST_TXG, &txg) == 0);
1152                         verify(nvlist_lookup_string(events[i],
1153                             ZPOOL_HIST_INT_STR, &intstr) == 0);
1154                         if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
1155                                 goto next;
1156
1157                         (void) snprintf(internalstr,
1158                             sizeof (internalstr),
1159                             "[internal %s txg:%lld] %s",
1160                             zfs_history_event_names[ievent], txg,
1161                             intstr);
1162                         cmd = internalstr;
1163                 }
1164                 tsec = time;
1165                 (void) localtime_r(&tsec, &t);
1166                 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
1167                 (void) printf("%s %s\n", tbuf, cmd);
1168                 printed = B_TRUE;
1169
1170 next:
1171                 if (dump_opt['h'] > 1) {
1172                         if (!printed)
1173                                 (void) printf("unrecognized record:\n");
1174                         dump_nvlist(events[i], 2);
1175                 }
1176         }
1177 }
1178
1179 /*ARGSUSED*/
1180 static void
1181 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1182 {
1183 }
1184
1185 static uint64_t
1186 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp,
1187     const zbookmark_phys_t *zb)
1188 {
1189         if (dnp == NULL) {
1190                 ASSERT(zb->zb_level < 0);
1191                 if (zb->zb_object == 0)
1192                         return (zb->zb_blkid);
1193                 return (zb->zb_blkid * BP_GET_LSIZE(bp));
1194         }
1195
1196         ASSERT(zb->zb_level >= 0);
1197
1198         return ((zb->zb_blkid <<
1199             (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1200             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1201 }
1202
1203 static void
1204 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp)
1205 {
1206         const dva_t *dva = bp->blk_dva;
1207         int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1208
1209         if (dump_opt['b'] >= 6) {
1210                 snprintf_blkptr(blkbuf, buflen, bp);
1211                 return;
1212         }
1213
1214         if (BP_IS_EMBEDDED(bp)) {
1215                 (void) sprintf(blkbuf,
1216                     "EMBEDDED et=%u %llxL/%llxP B=%llu",
1217                     (int)BPE_GET_ETYPE(bp),
1218                     (u_longlong_t)BPE_GET_LSIZE(bp),
1219                     (u_longlong_t)BPE_GET_PSIZE(bp),
1220                     (u_longlong_t)bp->blk_birth);
1221                 return;
1222         }
1223
1224         blkbuf[0] = '\0';
1225         for (int i = 0; i < ndvas; i++)
1226                 (void) snprintf(blkbuf + strlen(blkbuf),
1227                     buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1228                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1229                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1230                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1231
1232         if (BP_IS_HOLE(bp)) {
1233                 (void) snprintf(blkbuf + strlen(blkbuf),
1234                     buflen - strlen(blkbuf),
1235                     "%llxL B=%llu",
1236                     (u_longlong_t)BP_GET_LSIZE(bp),
1237                     (u_longlong_t)bp->blk_birth);
1238         } else {
1239                 (void) snprintf(blkbuf + strlen(blkbuf),
1240                     buflen - strlen(blkbuf),
1241                     "%llxL/%llxP F=%llu B=%llu/%llu",
1242                     (u_longlong_t)BP_GET_LSIZE(bp),
1243                     (u_longlong_t)BP_GET_PSIZE(bp),
1244                     (u_longlong_t)BP_GET_FILL(bp),
1245                     (u_longlong_t)bp->blk_birth,
1246                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1247         }
1248 }
1249
1250 static void
1251 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb,
1252     const dnode_phys_t *dnp)
1253 {
1254         char blkbuf[BP_SPRINTF_LEN];
1255         int l;
1256
1257         if (!BP_IS_EMBEDDED(bp)) {
1258                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1259                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1260         }
1261
1262         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1263
1264         ASSERT(zb->zb_level >= 0);
1265
1266         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1267                 if (l == zb->zb_level) {
1268                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1269                 } else {
1270                         (void) printf(" ");
1271                 }
1272         }
1273
1274         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1275         (void) printf("%s\n", blkbuf);
1276 }
1277
1278 static int
1279 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1280     blkptr_t *bp, const zbookmark_phys_t *zb)
1281 {
1282         int err = 0;
1283
1284         if (bp->blk_birth == 0)
1285                 return (0);
1286
1287         print_indirect(bp, zb, dnp);
1288
1289         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1290                 arc_flags_t flags = ARC_FLAG_WAIT;
1291                 int i;
1292                 blkptr_t *cbp;
1293                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1294                 arc_buf_t *buf;
1295                 uint64_t fill = 0;
1296
1297                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1298                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1299                 if (err)
1300                         return (err);
1301                 ASSERT(buf->b_data);
1302
1303                 /* recursively visit blocks below this */
1304                 cbp = buf->b_data;
1305                 for (i = 0; i < epb; i++, cbp++) {
1306                         zbookmark_phys_t czb;
1307
1308                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1309                             zb->zb_level - 1,
1310                             zb->zb_blkid * epb + i);
1311                         err = visit_indirect(spa, dnp, cbp, &czb);
1312                         if (err)
1313                                 break;
1314                         fill += BP_GET_FILL(cbp);
1315                 }
1316                 if (!err)
1317                         ASSERT3U(fill, ==, BP_GET_FILL(bp));
1318                 arc_buf_destroy(buf, &buf);
1319         }
1320
1321         return (err);
1322 }
1323
1324 /*ARGSUSED*/
1325 static void
1326 dump_indirect(dnode_t *dn)
1327 {
1328         dnode_phys_t *dnp = dn->dn_phys;
1329         int j;
1330         zbookmark_phys_t czb;
1331
1332         (void) printf("Indirect blocks:\n");
1333
1334         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1335             dn->dn_object, dnp->dn_nlevels - 1, 0);
1336         for (j = 0; j < dnp->dn_nblkptr; j++) {
1337                 czb.zb_blkid = j;
1338                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1339                     &dnp->dn_blkptr[j], &czb);
1340         }
1341
1342         (void) printf("\n");
1343 }
1344
1345 /*ARGSUSED*/
1346 static void
1347 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1348 {
1349         dsl_dir_phys_t *dd = data;
1350         time_t crtime;
1351         char nice[32];
1352
1353         /* make sure nicenum has enough space */
1354         CTASSERT(sizeof (nice) >= NN_NUMBUF_SZ);
1355
1356         if (dd == NULL)
1357                 return;
1358
1359         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1360
1361         crtime = dd->dd_creation_time;
1362         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1363         (void) printf("\t\thead_dataset_obj = %llu\n",
1364             (u_longlong_t)dd->dd_head_dataset_obj);
1365         (void) printf("\t\tparent_dir_obj = %llu\n",
1366             (u_longlong_t)dd->dd_parent_obj);
1367         (void) printf("\t\torigin_obj = %llu\n",
1368             (u_longlong_t)dd->dd_origin_obj);
1369         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1370             (u_longlong_t)dd->dd_child_dir_zapobj);
1371         zdb_nicenum(dd->dd_used_bytes, nice, sizeof (nice));
1372         (void) printf("\t\tused_bytes = %s\n", nice);
1373         zdb_nicenum(dd->dd_compressed_bytes, nice, sizeof (nice));
1374         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1375         zdb_nicenum(dd->dd_uncompressed_bytes, nice, sizeof (nice));
1376         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1377         zdb_nicenum(dd->dd_quota, nice, sizeof (nice));
1378         (void) printf("\t\tquota = %s\n", nice);
1379         zdb_nicenum(dd->dd_reserved, nice, sizeof (nice));
1380         (void) printf("\t\treserved = %s\n", nice);
1381         (void) printf("\t\tprops_zapobj = %llu\n",
1382             (u_longlong_t)dd->dd_props_zapobj);
1383         (void) printf("\t\tdeleg_zapobj = %llu\n",
1384             (u_longlong_t)dd->dd_deleg_zapobj);
1385         (void) printf("\t\tflags = %llx\n",
1386             (u_longlong_t)dd->dd_flags);
1387
1388 #define DO(which) \
1389         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice, \
1390             sizeof (nice)); \
1391         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1392         DO(HEAD);
1393         DO(SNAP);
1394         DO(CHILD);
1395         DO(CHILD_RSRV);
1396         DO(REFRSRV);
1397 #undef DO
1398 }
1399
1400 /*ARGSUSED*/
1401 static void
1402 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1403 {
1404         dsl_dataset_phys_t *ds = data;
1405         time_t crtime;
1406         char used[32], compressed[32], uncompressed[32], unique[32];
1407         char blkbuf[BP_SPRINTF_LEN];
1408
1409         /* make sure nicenum has enough space */
1410         CTASSERT(sizeof (used) >= NN_NUMBUF_SZ);
1411         CTASSERT(sizeof (compressed) >= NN_NUMBUF_SZ);
1412         CTASSERT(sizeof (uncompressed) >= NN_NUMBUF_SZ);
1413         CTASSERT(sizeof (unique) >= NN_NUMBUF_SZ);
1414
1415         if (ds == NULL)
1416                 return;
1417
1418         ASSERT(size == sizeof (*ds));
1419         crtime = ds->ds_creation_time;
1420         zdb_nicenum(ds->ds_referenced_bytes, used, sizeof (used));
1421         zdb_nicenum(ds->ds_compressed_bytes, compressed, sizeof (compressed));
1422         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed,
1423             sizeof (uncompressed));
1424         zdb_nicenum(ds->ds_unique_bytes, unique, sizeof (unique));
1425         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1426
1427         (void) printf("\t\tdir_obj = %llu\n",
1428             (u_longlong_t)ds->ds_dir_obj);
1429         (void) printf("\t\tprev_snap_obj = %llu\n",
1430             (u_longlong_t)ds->ds_prev_snap_obj);
1431         (void) printf("\t\tprev_snap_txg = %llu\n",
1432             (u_longlong_t)ds->ds_prev_snap_txg);
1433         (void) printf("\t\tnext_snap_obj = %llu\n",
1434             (u_longlong_t)ds->ds_next_snap_obj);
1435         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1436             (u_longlong_t)ds->ds_snapnames_zapobj);
1437         (void) printf("\t\tnum_children = %llu\n",
1438             (u_longlong_t)ds->ds_num_children);
1439         (void) printf("\t\tuserrefs_obj = %llu\n",
1440             (u_longlong_t)ds->ds_userrefs_obj);
1441         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1442         (void) printf("\t\tcreation_txg = %llu\n",
1443             (u_longlong_t)ds->ds_creation_txg);
1444         (void) printf("\t\tdeadlist_obj = %llu\n",
1445             (u_longlong_t)ds->ds_deadlist_obj);
1446         (void) printf("\t\tused_bytes = %s\n", used);
1447         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1448         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1449         (void) printf("\t\tunique = %s\n", unique);
1450         (void) printf("\t\tfsid_guid = %llu\n",
1451             (u_longlong_t)ds->ds_fsid_guid);
1452         (void) printf("\t\tguid = %llu\n",
1453             (u_longlong_t)ds->ds_guid);
1454         (void) printf("\t\tflags = %llx\n",
1455             (u_longlong_t)ds->ds_flags);
1456         (void) printf("\t\tnext_clones_obj = %llu\n",
1457             (u_longlong_t)ds->ds_next_clones_obj);
1458         (void) printf("\t\tprops_obj = %llu\n",
1459             (u_longlong_t)ds->ds_props_obj);
1460         (void) printf("\t\tbp = %s\n", blkbuf);
1461 }
1462
1463 /* ARGSUSED */
1464 static int
1465 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1466 {
1467         char blkbuf[BP_SPRINTF_LEN];
1468
1469         if (bp->blk_birth != 0) {
1470                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1471                 (void) printf("\t%s\n", blkbuf);
1472         }
1473         return (0);
1474 }
1475
1476 static void
1477 dump_bptree(objset_t *os, uint64_t obj, char *name)
1478 {
1479         char bytes[32];
1480         bptree_phys_t *bt;
1481         dmu_buf_t *db;
1482
1483         /* make sure nicenum has enough space */
1484         CTASSERT(sizeof (bytes) >= NN_NUMBUF_SZ);
1485
1486         if (dump_opt['d'] < 3)
1487                 return;
1488
1489         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1490         bt = db->db_data;
1491         zdb_nicenum(bt->bt_bytes, bytes, sizeof (bytes));
1492         (void) printf("\n    %s: %llu datasets, %s\n",
1493             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1494         dmu_buf_rele(db, FTAG);
1495
1496         if (dump_opt['d'] < 5)
1497                 return;
1498
1499         (void) printf("\n");
1500
1501         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1502 }
1503
1504 /* ARGSUSED */
1505 static int
1506 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1507 {
1508         char blkbuf[BP_SPRINTF_LEN];
1509
1510         ASSERT(bp->blk_birth != 0);
1511         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1512         (void) printf("\t%s\n", blkbuf);
1513         return (0);
1514 }
1515
1516 static void
1517 dump_full_bpobj(bpobj_t *bpo, char *name, int indent)
1518 {
1519         char bytes[32];
1520         char comp[32];
1521         char uncomp[32];
1522
1523         /* make sure nicenum has enough space */
1524         CTASSERT(sizeof (bytes) >= NN_NUMBUF_SZ);
1525         CTASSERT(sizeof (comp) >= NN_NUMBUF_SZ);
1526         CTASSERT(sizeof (uncomp) >= NN_NUMBUF_SZ);
1527
1528         if (dump_opt['d'] < 3)
1529                 return;
1530
1531         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes, sizeof (bytes));
1532         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1533                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp, sizeof (comp));
1534                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp, sizeof (uncomp));
1535                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1536                     "%llu subobjs in object %llu, %s (%s/%s comp)\n",
1537                     indent * 8, name,
1538                     (u_longlong_t)bpo->bpo_object,
1539                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1540                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1541                     (u_longlong_t)bpo->bpo_phys->bpo_subobjs,
1542                     bytes, comp, uncomp);
1543
1544                 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1545                         uint64_t subobj;
1546                         bpobj_t subbpo;
1547                         int error;
1548                         VERIFY0(dmu_read(bpo->bpo_os,
1549                             bpo->bpo_phys->bpo_subobjs,
1550                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1551                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1552                         if (error != 0) {
1553                                 (void) printf("ERROR %u while trying to open "
1554                                     "subobj id %llu\n",
1555                                     error, (u_longlong_t)subobj);
1556                                 continue;
1557                         }
1558                         dump_full_bpobj(&subbpo, "subobj", indent + 1);
1559                         bpobj_close(&subbpo);
1560                 }
1561         } else {
1562                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1563                     indent * 8, name,
1564                     (u_longlong_t)bpo->bpo_object,
1565                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1566                     bytes);
1567         }
1568
1569         if (dump_opt['d'] < 5)
1570                 return;
1571
1572
1573         if (indent == 0) {
1574                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1575                 (void) printf("\n");
1576         }
1577 }
1578
1579 static void
1580 dump_deadlist(dsl_deadlist_t *dl)
1581 {
1582         dsl_deadlist_entry_t *dle;
1583         uint64_t unused;
1584         char bytes[32];
1585         char comp[32];
1586         char uncomp[32];
1587
1588         /* make sure nicenum has enough space */
1589         CTASSERT(sizeof (bytes) >= NN_NUMBUF_SZ);
1590         CTASSERT(sizeof (comp) >= NN_NUMBUF_SZ);
1591         CTASSERT(sizeof (uncomp) >= NN_NUMBUF_SZ);
1592
1593         if (dump_opt['d'] < 3)
1594                 return;
1595
1596         if (dl->dl_oldfmt) {
1597                 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0);
1598                 return;
1599         }
1600
1601         zdb_nicenum(dl->dl_phys->dl_used, bytes, sizeof (bytes));
1602         zdb_nicenum(dl->dl_phys->dl_comp, comp, sizeof (comp));
1603         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp, sizeof (uncomp));
1604         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1605             bytes, comp, uncomp);
1606
1607         if (dump_opt['d'] < 4)
1608                 return;
1609
1610         (void) printf("\n");
1611
1612         /* force the tree to be loaded */
1613         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1614
1615         for (dle = avl_first(&dl->dl_tree); dle;
1616             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1617                 if (dump_opt['d'] >= 5) {
1618                         char buf[128];
1619                         (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1620                             (longlong_t)dle->dle_mintxg,
1621                             (longlong_t)dle->dle_bpobj.bpo_object);
1622                         dump_full_bpobj(&dle->dle_bpobj, buf, 0);
1623                 } else {
1624                         (void) printf("mintxg %llu -> obj %llu\n",
1625                             (longlong_t)dle->dle_mintxg,
1626                             (longlong_t)dle->dle_bpobj.bpo_object);
1627
1628                 }
1629         }
1630 }
1631
1632 static avl_tree_t idx_tree;
1633 static avl_tree_t domain_tree;
1634 static boolean_t fuid_table_loaded;
1635 static boolean_t sa_loaded;
1636 sa_attr_type_t *sa_attr_table;
1637
1638 static void
1639 fuid_table_destroy()
1640 {
1641         if (fuid_table_loaded) {
1642                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1643                 fuid_table_loaded = B_FALSE;
1644         }
1645 }
1646
1647 /*
1648  * print uid or gid information.
1649  * For normal POSIX id just the id is printed in decimal format.
1650  * For CIFS files with FUID the fuid is printed in hex followed by
1651  * the domain-rid string.
1652  */
1653 static void
1654 print_idstr(uint64_t id, const char *id_type)
1655 {
1656         if (FUID_INDEX(id)) {
1657                 char *domain;
1658
1659                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1660                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1661                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1662         } else {
1663                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1664         }
1665
1666 }
1667
1668 static void
1669 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1670 {
1671         uint32_t uid_idx, gid_idx;
1672
1673         uid_idx = FUID_INDEX(uid);
1674         gid_idx = FUID_INDEX(gid);
1675
1676         /* Load domain table, if not already loaded */
1677         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1678                 uint64_t fuid_obj;
1679
1680                 /* first find the fuid object.  It lives in the master node */
1681                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1682                     8, 1, &fuid_obj) == 0);
1683                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1684                 (void) zfs_fuid_table_load(os, fuid_obj,
1685                     &idx_tree, &domain_tree);
1686                 fuid_table_loaded = B_TRUE;
1687         }
1688
1689         print_idstr(uid, "uid");
1690         print_idstr(gid, "gid");
1691 }
1692
1693 /*ARGSUSED*/
1694 static void
1695 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1696 {
1697         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1698         sa_handle_t *hdl;
1699         uint64_t xattr, rdev, gen;
1700         uint64_t uid, gid, mode, fsize, parent, links;
1701         uint64_t pflags;
1702         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1703         time_t z_crtime, z_atime, z_mtime, z_ctime;
1704         sa_bulk_attr_t bulk[12];
1705         int idx = 0;
1706         int error;
1707
1708         if (!sa_loaded) {
1709                 uint64_t sa_attrs = 0;
1710                 uint64_t version;
1711
1712                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1713                     8, 1, &version) == 0);
1714                 if (version >= ZPL_VERSION_SA) {
1715                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1716                             8, 1, &sa_attrs) == 0);
1717                 }
1718                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1719                     ZPL_END, &sa_attr_table)) != 0) {
1720                         (void) printf("sa_setup failed errno %d, can't "
1721                             "display znode contents\n", error);
1722                         return;
1723                 }
1724                 sa_loaded = B_TRUE;
1725         }
1726
1727         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1728                 (void) printf("Failed to get handle for SA znode\n");
1729                 return;
1730         }
1731
1732         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1733         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1734         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1735             &links, 8);
1736         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1737         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1738             &mode, 8);
1739         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1740             NULL, &parent, 8);
1741         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1742             &fsize, 8);
1743         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1744             acctm, 16);
1745         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1746             modtm, 16);
1747         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1748             crtm, 16);
1749         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1750             chgtm, 16);
1751         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1752             &pflags, 8);
1753
1754         if (sa_bulk_lookup(hdl, bulk, idx)) {
1755                 (void) sa_handle_destroy(hdl);
1756                 return;
1757         }
1758
1759         z_crtime = (time_t)crtm[0];
1760         z_atime = (time_t)acctm[0];
1761         z_mtime = (time_t)modtm[0];
1762         z_ctime = (time_t)chgtm[0];
1763
1764         if (dump_opt['d'] > 4) {
1765                 error = zfs_obj_to_path(os, object, path, sizeof (path));
1766                 if (error != 0) {
1767                         (void) snprintf(path, sizeof (path),
1768                             "\?\?\?<object#%llu>", (u_longlong_t)object);
1769                 }
1770                 (void) printf("\tpath   %s\n", path);
1771         }
1772         dump_uidgid(os, uid, gid);
1773         (void) printf("\tatime  %s", ctime(&z_atime));
1774         (void) printf("\tmtime  %s", ctime(&z_mtime));
1775         (void) printf("\tctime  %s", ctime(&z_ctime));
1776         (void) printf("\tcrtime %s", ctime(&z_crtime));
1777         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1778         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1779         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1780         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1781         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1782         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1783         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1784             sizeof (uint64_t)) == 0)
1785                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1786         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1787             sizeof (uint64_t)) == 0)
1788                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1789         sa_handle_destroy(hdl);
1790 }
1791
1792 /*ARGSUSED*/
1793 static void
1794 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1795 {
1796 }
1797
1798 /*ARGSUSED*/
1799 static void
1800 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1801 {
1802 }
1803
1804 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1805         dump_none,              /* unallocated                  */
1806         dump_zap,               /* object directory             */
1807         dump_uint64,            /* object array                 */
1808         dump_none,              /* packed nvlist                */
1809         dump_packed_nvlist,     /* packed nvlist size           */
1810         dump_none,              /* bpobj                        */
1811         dump_bpobj,             /* bpobj header                 */
1812         dump_none,              /* SPA space map header         */
1813         dump_none,              /* SPA space map                */
1814         dump_none,              /* ZIL intent log               */
1815         dump_dnode,             /* DMU dnode                    */
1816         dump_dmu_objset,        /* DMU objset                   */
1817         dump_dsl_dir,           /* DSL directory                */
1818         dump_zap,               /* DSL directory child map      */
1819         dump_zap,               /* DSL dataset snap map         */
1820         dump_zap,               /* DSL props                    */
1821         dump_dsl_dataset,       /* DSL dataset                  */
1822         dump_znode,             /* ZFS znode                    */
1823         dump_acl,               /* ZFS V0 ACL                   */
1824         dump_uint8,             /* ZFS plain file               */
1825         dump_zpldir,            /* ZFS directory                */
1826         dump_zap,               /* ZFS master node              */
1827         dump_zap,               /* ZFS delete queue             */
1828         dump_uint8,             /* zvol object                  */
1829         dump_zap,               /* zvol prop                    */
1830         dump_uint8,             /* other uint8[]                */
1831         dump_uint64,            /* other uint64[]               */
1832         dump_zap,               /* other ZAP                    */
1833         dump_zap,               /* persistent error log         */
1834         dump_uint8,             /* SPA history                  */
1835         dump_history_offsets,   /* SPA history offsets          */
1836         dump_zap,               /* Pool properties              */
1837         dump_zap,               /* DSL permissions              */
1838         dump_acl,               /* ZFS ACL                      */
1839         dump_uint8,             /* ZFS SYSACL                   */
1840         dump_none,              /* FUID nvlist                  */
1841         dump_packed_nvlist,     /* FUID nvlist size             */
1842         dump_zap,               /* DSL dataset next clones      */
1843         dump_zap,               /* DSL scrub queue              */
1844         dump_zap,               /* ZFS user/group used          */
1845         dump_zap,               /* ZFS user/group quota         */
1846         dump_zap,               /* snapshot refcount tags       */
1847         dump_ddt_zap,           /* DDT ZAP object               */
1848         dump_zap,               /* DDT statistics               */
1849         dump_znode,             /* SA object                    */
1850         dump_zap,               /* SA Master Node               */
1851         dump_sa_attrs,          /* SA attribute registration    */
1852         dump_sa_layouts,        /* SA attribute layouts         */
1853         dump_zap,               /* DSL scrub translations       */
1854         dump_none,              /* fake dedup BP                */
1855         dump_zap,               /* deadlist                     */
1856         dump_none,              /* deadlist hdr                 */
1857         dump_zap,               /* dsl clones                   */
1858         dump_bpobj_subobjs,     /* bpobj subobjs                */
1859         dump_unknown,           /* Unknown type, must be last   */
1860 };
1861
1862 static void
1863 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1864 {
1865         dmu_buf_t *db = NULL;
1866         dmu_object_info_t doi;
1867         dnode_t *dn;
1868         void *bonus = NULL;
1869         size_t bsize = 0;
1870         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1871         char bonus_size[32];
1872         char aux[50];
1873         int error;
1874
1875         /* make sure nicenum has enough space */
1876         CTASSERT(sizeof (iblk) >= NN_NUMBUF_SZ);
1877         CTASSERT(sizeof (dblk) >= NN_NUMBUF_SZ);
1878         CTASSERT(sizeof (lsize) >= NN_NUMBUF_SZ);
1879         CTASSERT(sizeof (asize) >= NN_NUMBUF_SZ);
1880         CTASSERT(sizeof (bonus_size) >= NN_NUMBUF_SZ);
1881
1882         if (*print_header) {
1883                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1884                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1885                     "%full", "type");
1886                 *print_header = 0;
1887         }
1888
1889         if (object == 0) {
1890                 dn = DMU_META_DNODE(os);
1891         } else {
1892                 error = dmu_bonus_hold(os, object, FTAG, &db);
1893                 if (error)
1894                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1895                             object, error);
1896                 bonus = db->db_data;
1897                 bsize = db->db_size;
1898                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1899         }
1900         dmu_object_info_from_dnode(dn, &doi);
1901
1902         zdb_nicenum(doi.doi_metadata_block_size, iblk, sizeof (iblk));
1903         zdb_nicenum(doi.doi_data_block_size, dblk, sizeof (dblk));
1904         zdb_nicenum(doi.doi_max_offset, lsize, sizeof (lsize));
1905         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize, sizeof (asize));
1906         zdb_nicenum(doi.doi_bonus_size, bonus_size, sizeof (bonus_size));
1907         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1908             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1909             doi.doi_max_offset);
1910
1911         aux[0] = '\0';
1912
1913         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1914                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1915                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1916         }
1917
1918         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1919                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1920                     ZDB_COMPRESS_NAME(doi.doi_compress));
1921         }
1922
1923         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1924             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1925             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1926
1927         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1928                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1929                     "", "", "", "", "", bonus_size, "bonus",
1930                     ZDB_OT_NAME(doi.doi_bonus_type));
1931         }
1932
1933         if (verbosity >= 4) {
1934                 (void) printf("\tdnode flags: %s%s%s\n",
1935                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1936                     "USED_BYTES " : "",
1937                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1938                     "USERUSED_ACCOUNTED " : "",
1939                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1940                     "SPILL_BLKPTR" : "");
1941                 (void) printf("\tdnode maxblkid: %llu\n",
1942                     (longlong_t)dn->dn_phys->dn_maxblkid);
1943
1944                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1945                     bonus, bsize);
1946                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1947                 *print_header = 1;
1948         }
1949
1950         if (verbosity >= 5)
1951                 dump_indirect(dn);
1952
1953         if (verbosity >= 5) {
1954                 /*
1955                  * Report the list of segments that comprise the object.
1956                  */
1957                 uint64_t start = 0;
1958                 uint64_t end;
1959                 uint64_t blkfill = 1;
1960                 int minlvl = 1;
1961
1962                 if (dn->dn_type == DMU_OT_DNODE) {
1963                         minlvl = 0;
1964                         blkfill = DNODES_PER_BLOCK;
1965                 }
1966
1967                 for (;;) {
1968                         char segsize[32];
1969                         /* make sure nicenum has enough space */
1970                         CTASSERT(sizeof (segsize) >= NN_NUMBUF_SZ);
1971                         error = dnode_next_offset(dn,
1972                             0, &start, minlvl, blkfill, 0);
1973                         if (error)
1974                                 break;
1975                         end = start;
1976                         error = dnode_next_offset(dn,
1977                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1978                         zdb_nicenum(end - start, segsize, sizeof (segsize));
1979                         (void) printf("\t\tsegment [%016llx, %016llx)"
1980                             " size %5s\n", (u_longlong_t)start,
1981                             (u_longlong_t)end, segsize);
1982                         if (error)
1983                                 break;
1984                         start = end;
1985                 }
1986         }
1987
1988         if (db != NULL)
1989                 dmu_buf_rele(db, FTAG);
1990 }
1991
1992 static char *objset_types[DMU_OST_NUMTYPES] = {
1993         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1994
1995 static void
1996 dump_dir(objset_t *os)
1997 {
1998         dmu_objset_stats_t dds;
1999         uint64_t object, object_count;
2000         uint64_t refdbytes, usedobjs, scratch;
2001         char numbuf[32];
2002         char blkbuf[BP_SPRINTF_LEN + 20];
2003         char osname[ZFS_MAX_DATASET_NAME_LEN];
2004         char *type = "UNKNOWN";
2005         int verbosity = dump_opt['d'];
2006         int print_header = 1;
2007         int i, error;
2008
2009         /* make sure nicenum has enough space */
2010         CTASSERT(sizeof (numbuf) >= NN_NUMBUF_SZ);
2011
2012         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
2013         dmu_objset_fast_stat(os, &dds);
2014         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
2015
2016         if (dds.dds_type < DMU_OST_NUMTYPES)
2017                 type = objset_types[dds.dds_type];
2018
2019         if (dds.dds_type == DMU_OST_META) {
2020                 dds.dds_creation_txg = TXG_INITIAL;
2021                 usedobjs = BP_GET_FILL(os->os_rootbp);
2022                 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)->
2023                     dd_used_bytes;
2024         } else {
2025                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
2026         }
2027
2028         ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
2029
2030         zdb_nicenum(refdbytes, numbuf, sizeof (numbuf));
2031
2032         if (verbosity >= 4) {
2033                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
2034                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
2035                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
2036         } else {
2037                 blkbuf[0] = '\0';
2038         }
2039
2040         dmu_objset_name(os, osname);
2041
2042         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
2043             "%s, %llu objects%s\n",
2044             osname, type, (u_longlong_t)dmu_objset_id(os),
2045             (u_longlong_t)dds.dds_creation_txg,
2046             numbuf, (u_longlong_t)usedobjs, blkbuf);
2047
2048         if (zopt_objects != 0) {
2049                 for (i = 0; i < zopt_objects; i++)
2050                         dump_object(os, zopt_object[i], verbosity,
2051                             &print_header);
2052                 (void) printf("\n");
2053                 return;
2054         }
2055
2056         if (dump_opt['i'] != 0 || verbosity >= 2)
2057                 dump_intent_log(dmu_objset_zil(os));
2058
2059         if (dmu_objset_ds(os) != NULL)
2060                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
2061
2062         if (verbosity < 2)
2063                 return;
2064
2065         if (BP_IS_HOLE(os->os_rootbp))
2066                 return;
2067
2068         dump_object(os, 0, verbosity, &print_header);
2069         object_count = 0;
2070         if (DMU_USERUSED_DNODE(os) != NULL &&
2071             DMU_USERUSED_DNODE(os)->dn_type != 0) {
2072                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
2073                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
2074         }
2075
2076         object = 0;
2077         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
2078                 dump_object(os, object, verbosity, &print_header);
2079                 object_count++;
2080         }
2081
2082         ASSERT3U(object_count, ==, usedobjs);
2083
2084         (void) printf("\n");
2085
2086         if (error != ESRCH) {
2087                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
2088                 abort();
2089         }
2090 }
2091
2092 static void
2093 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
2094 {
2095         time_t timestamp = ub->ub_timestamp;
2096
2097         (void) printf(header ? header : "");
2098         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
2099         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
2100         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
2101         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
2102         (void) printf("\ttimestamp = %llu UTC = %s",
2103             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
2104         if (dump_opt['u'] >= 3) {
2105                 char blkbuf[BP_SPRINTF_LEN];
2106                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
2107                 (void) printf("\trootbp = %s\n", blkbuf);
2108         }
2109         (void) printf(footer ? footer : "");
2110 }
2111
2112 static void
2113 dump_config(spa_t *spa)
2114 {
2115         dmu_buf_t *db;
2116         size_t nvsize = 0;
2117         int error = 0;
2118
2119
2120         error = dmu_bonus_hold(spa->spa_meta_objset,
2121             spa->spa_config_object, FTAG, &db);
2122
2123         if (error == 0) {
2124                 nvsize = *(uint64_t *)db->db_data;
2125                 dmu_buf_rele(db, FTAG);
2126
2127                 (void) printf("\nMOS Configuration:\n");
2128                 dump_packed_nvlist(spa->spa_meta_objset,
2129                     spa->spa_config_object, (void *)&nvsize, 1);
2130         } else {
2131                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
2132                     (u_longlong_t)spa->spa_config_object, error);
2133         }
2134 }
2135
2136 static void
2137 dump_cachefile(const char *cachefile)
2138 {
2139         int fd;
2140         struct stat64 statbuf;
2141         char *buf;
2142         nvlist_t *config;
2143
2144         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
2145                 (void) printf("cannot open '%s': %s\n", cachefile,
2146                     strerror(errno));
2147                 exit(1);
2148         }
2149
2150         if (fstat64(fd, &statbuf) != 0) {
2151                 (void) printf("failed to stat '%s': %s\n", cachefile,
2152                     strerror(errno));
2153                 exit(1);
2154         }
2155
2156         if ((buf = malloc(statbuf.st_size)) == NULL) {
2157                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
2158                     (u_longlong_t)statbuf.st_size);
2159                 exit(1);
2160         }
2161
2162         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2163                 (void) fprintf(stderr, "failed to read %llu bytes\n",
2164                     (u_longlong_t)statbuf.st_size);
2165                 exit(1);
2166         }
2167
2168         (void) close(fd);
2169
2170         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
2171                 (void) fprintf(stderr, "failed to unpack nvlist\n");
2172                 exit(1);
2173         }
2174
2175         free(buf);
2176
2177         dump_nvlist(config, 0);
2178
2179         nvlist_free(config);
2180 }
2181
2182 #define ZDB_MAX_UB_HEADER_SIZE 32
2183
2184 static void
2185 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
2186 {
2187         vdev_t vd;
2188         vdev_t *vdp = &vd;
2189         char header[ZDB_MAX_UB_HEADER_SIZE];
2190
2191         vd.vdev_ashift = ashift;
2192         vdp->vdev_top = vdp;
2193
2194         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
2195                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
2196                 uberblock_t *ub = (void *)((char *)lbl + uoff);
2197
2198                 if (uberblock_verify(ub))
2199                         continue;
2200                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
2201                     "Uberblock[%d]\n", i);
2202                 dump_uberblock(ub, header, "");
2203         }
2204 }
2205
2206 static void
2207 dump_label(const char *dev)
2208 {
2209         int fd;
2210         vdev_label_t label;
2211         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
2212         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
2213         struct stat64 statbuf;
2214         uint64_t psize, ashift;
2215         int len = strlen(dev) + 1;
2216
2217         if (strncmp(dev, ZFS_DISK_ROOTD, strlen(ZFS_DISK_ROOTD)) == 0) {
2218                 len++;
2219                 path = malloc(len);
2220                 (void) snprintf(path, len, "%s%s", ZFS_RDISK_ROOTD,
2221                     dev + strlen(ZFS_DISK_ROOTD));
2222         } else {
2223                 path = strdup(dev);
2224         }
2225
2226         if ((fd = open64(path, O_RDONLY)) < 0) {
2227                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2228                 free(path);
2229                 exit(1);
2230         }
2231
2232         if (fstat64(fd, &statbuf) != 0) {
2233                 (void) printf("failed to stat '%s': %s\n", path,
2234                     strerror(errno));
2235                 free(path);
2236                 (void) close(fd);
2237                 exit(1);
2238         }
2239
2240         if (S_ISBLK(statbuf.st_mode)) {
2241                 (void) printf("cannot use '%s': character device required\n",
2242                     path);
2243                 free(path);
2244                 (void) close(fd);
2245                 exit(1);
2246         }
2247
2248         psize = statbuf.st_size;
2249         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2250
2251         for (int l = 0; l < VDEV_LABELS; l++) {
2252                 nvlist_t *config = NULL;
2253
2254                 (void) printf("--------------------------------------------\n");
2255                 (void) printf("LABEL %d\n", l);
2256                 (void) printf("--------------------------------------------\n");
2257
2258                 if (pread64(fd, &label, sizeof (label),
2259                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2260                         (void) printf("failed to read label %d\n", l);
2261                         continue;
2262                 }
2263
2264                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2265                         (void) printf("failed to unpack label %d\n", l);
2266                         ashift = SPA_MINBLOCKSHIFT;
2267                 } else {
2268                         nvlist_t *vdev_tree = NULL;
2269
2270                         dump_nvlist(config, 4);
2271                         if ((nvlist_lookup_nvlist(config,
2272                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2273                             (nvlist_lookup_uint64(vdev_tree,
2274                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2275                                 ashift = SPA_MINBLOCKSHIFT;
2276                         nvlist_free(config);
2277                 }
2278                 if (dump_opt['u'])
2279                         dump_label_uberblocks(&label, ashift);
2280         }
2281
2282         free(path);
2283         (void) close(fd);
2284 }
2285
2286 static uint64_t dataset_feature_count[SPA_FEATURES];
2287
2288 /*ARGSUSED*/
2289 static int
2290 dump_one_dir(const char *dsname, void *arg)
2291 {
2292         int error;
2293         objset_t *os;
2294
2295         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2296         if (error) {
2297                 (void) printf("Could not open %s, error %d\n", dsname, error);
2298                 return (0);
2299         }
2300
2301         for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
2302                 if (!dmu_objset_ds(os)->ds_feature_inuse[f])
2303                         continue;
2304                 ASSERT(spa_feature_table[f].fi_flags &
2305                     ZFEATURE_FLAG_PER_DATASET);
2306                 dataset_feature_count[f]++;
2307         }
2308
2309         dump_dir(os);
2310         dmu_objset_disown(os, FTAG);
2311         fuid_table_destroy();
2312         sa_loaded = B_FALSE;
2313         return (0);
2314 }
2315
2316 /*
2317  * Block statistics.
2318  */
2319 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2)
2320 typedef struct zdb_blkstats {
2321         uint64_t zb_asize;
2322         uint64_t zb_lsize;
2323         uint64_t zb_psize;
2324         uint64_t zb_count;
2325         uint64_t zb_gangs;
2326         uint64_t zb_ditto_samevdev;
2327         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2328 } zdb_blkstats_t;
2329
2330 /*
2331  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2332  */
2333 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2334 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2335 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2336 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2337
2338 static char *zdb_ot_extname[] = {
2339         "deferred free",
2340         "dedup ditto",
2341         "other",
2342         "Total",
2343 };
2344
2345 #define ZB_TOTAL        DN_MAX_LEVELS
2346
2347 typedef struct zdb_cb {
2348         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2349         uint64_t        zcb_dedup_asize;
2350         uint64_t        zcb_dedup_blocks;
2351         uint64_t        zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
2352         uint64_t        zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
2353             [BPE_PAYLOAD_SIZE];
2354         uint64_t        zcb_start;
2355         uint64_t        zcb_lastprint;
2356         uint64_t        zcb_totalasize;
2357         uint64_t        zcb_errors[256];
2358         int             zcb_readfails;
2359         int             zcb_haderrors;
2360         spa_t           *zcb_spa;
2361 } zdb_cb_t;
2362
2363 static void
2364 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2365     dmu_object_type_t type)
2366 {
2367         uint64_t refcnt = 0;
2368
2369         ASSERT(type < ZDB_OT_TOTAL);
2370
2371         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2372                 return;
2373
2374         for (int i = 0; i < 4; i++) {
2375                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2376                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2377                 int equal;
2378                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2379
2380                 zb->zb_asize += BP_GET_ASIZE(bp);
2381                 zb->zb_lsize += BP_GET_LSIZE(bp);
2382                 zb->zb_psize += BP_GET_PSIZE(bp);
2383                 zb->zb_count++;
2384
2385                 /*
2386                  * The histogram is only big enough to record blocks up to
2387                  * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last,
2388                  * "other", bucket.
2389                  */
2390                 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT;
2391                 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1);
2392                 zb->zb_psize_histogram[idx]++;
2393
2394                 zb->zb_gangs += BP_COUNT_GANG(bp);
2395
2396                 switch (BP_GET_NDVAS(bp)) {
2397                 case 2:
2398                         if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2399                             DVA_GET_VDEV(&bp->blk_dva[1]))
2400                                 zb->zb_ditto_samevdev++;
2401                         break;
2402                 case 3:
2403                         equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2404                             DVA_GET_VDEV(&bp->blk_dva[1])) +
2405                             (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2406                             DVA_GET_VDEV(&bp->blk_dva[2])) +
2407                             (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2408                             DVA_GET_VDEV(&bp->blk_dva[2]));
2409                         if (equal != 0)
2410                                 zb->zb_ditto_samevdev++;
2411                         break;
2412                 }
2413
2414         }
2415
2416         if (BP_IS_EMBEDDED(bp)) {
2417                 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
2418                 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
2419                     [BPE_GET_PSIZE(bp)]++;
2420                 return;
2421         }
2422
2423         if (dump_opt['L'])
2424                 return;
2425
2426         if (BP_GET_DEDUP(bp)) {
2427                 ddt_t *ddt;
2428                 ddt_entry_t *dde;
2429
2430                 ddt = ddt_select(zcb->zcb_spa, bp);
2431                 ddt_enter(ddt);
2432                 dde = ddt_lookup(ddt, bp, B_FALSE);
2433
2434                 if (dde == NULL) {
2435                         refcnt = 0;
2436                 } else {
2437                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2438                         ddt_phys_decref(ddp);
2439                         refcnt = ddp->ddp_refcnt;
2440                         if (ddt_phys_total_refcnt(dde) == 0)
2441                                 ddt_remove(ddt, dde);
2442                 }
2443                 ddt_exit(ddt);
2444         }
2445
2446         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2447             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2448             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2449 }
2450
2451 /* ARGSUSED */
2452 static void
2453 zdb_blkptr_done(zio_t *zio)
2454 {
2455         spa_t *spa = zio->io_spa;
2456         blkptr_t *bp = zio->io_bp;
2457         int ioerr = zio->io_error;
2458         zdb_cb_t *zcb = zio->io_private;
2459         zbookmark_phys_t *zb = &zio->io_bookmark;
2460
2461         zio_data_buf_free(zio->io_data, zio->io_size);
2462
2463         mutex_enter(&spa->spa_scrub_lock);
2464         spa->spa_scrub_inflight--;
2465         cv_broadcast(&spa->spa_scrub_io_cv);
2466
2467         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2468                 char blkbuf[BP_SPRINTF_LEN];
2469
2470                 zcb->zcb_haderrors = 1;
2471                 zcb->zcb_errors[ioerr]++;
2472
2473                 if (dump_opt['b'] >= 2)
2474                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2475                 else
2476                         blkbuf[0] = '\0';
2477
2478                 (void) printf("zdb_blkptr_cb: "
2479                     "Got error %d reading "
2480                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2481                     ioerr,
2482                     (u_longlong_t)zb->zb_objset,
2483                     (u_longlong_t)zb->zb_object,
2484                     (u_longlong_t)zb->zb_level,
2485                     (u_longlong_t)zb->zb_blkid,
2486                     blkbuf);
2487         }
2488         mutex_exit(&spa->spa_scrub_lock);
2489 }
2490
2491 /* ARGSUSED */
2492 static int
2493 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2494     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
2495 {
2496         zdb_cb_t *zcb = arg;
2497         dmu_object_type_t type;
2498         boolean_t is_metadata;
2499
2500         if (bp == NULL)
2501                 return (0);
2502
2503         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2504                 char blkbuf[BP_SPRINTF_LEN];
2505                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2506                 (void) printf("objset %llu object %llu "
2507                     "level %lld offset 0x%llx %s\n",
2508                     (u_longlong_t)zb->zb_objset,
2509                     (u_longlong_t)zb->zb_object,
2510                     (longlong_t)zb->zb_level,
2511                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2512                     blkbuf);
2513         }
2514
2515         if (BP_IS_HOLE(bp))
2516                 return (0);
2517
2518         type = BP_GET_TYPE(bp);
2519
2520         zdb_count_block(zcb, zilog, bp,
2521             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2522
2523         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2524
2525         if (!BP_IS_EMBEDDED(bp) &&
2526             (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
2527                 size_t size = BP_GET_PSIZE(bp);
2528                 void *data = zio_data_buf_alloc(size);
2529                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2530
2531                 /* If it's an intent log block, failure is expected. */
2532                 if (zb->zb_level == ZB_ZIL_LEVEL)
2533                         flags |= ZIO_FLAG_SPECULATIVE;
2534
2535                 mutex_enter(&spa->spa_scrub_lock);
2536                 while (spa->spa_scrub_inflight > max_inflight)
2537                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2538                 spa->spa_scrub_inflight++;
2539                 mutex_exit(&spa->spa_scrub_lock);
2540
2541                 zio_nowait(zio_read(NULL, spa, bp, data, size,
2542                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2543         }
2544
2545         zcb->zcb_readfails = 0;
2546
2547         /* only call gethrtime() every 100 blocks */
2548         static int iters;
2549         if (++iters > 100)
2550                 iters = 0;
2551         else
2552                 return (0);
2553
2554         if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2555                 uint64_t now = gethrtime();
2556                 char buf[10];
2557                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2558                 int kb_per_sec =
2559                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2560                 int sec_remaining =
2561                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2562
2563                 /* make sure nicenum has enough space */
2564                 CTASSERT(sizeof (buf) >= NN_NUMBUF_SZ);
2565
2566                 zfs_nicenum(bytes, buf, sizeof (buf));
2567                 (void) fprintf(stderr,
2568                     "\r%5s completed (%4dMB/s) "
2569                     "estimated time remaining: %uhr %02umin %02usec        ",
2570                     buf, kb_per_sec / 1024,
2571                     sec_remaining / 60 / 60,
2572                     sec_remaining / 60 % 60,
2573                     sec_remaining % 60);
2574
2575                 zcb->zcb_lastprint = now;
2576         }
2577
2578         return (0);
2579 }
2580
2581 static void
2582 zdb_leak(void *arg, uint64_t start, uint64_t size)
2583 {
2584         vdev_t *vd = arg;
2585
2586         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2587             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2588 }
2589
2590 static metaslab_ops_t zdb_metaslab_ops = {
2591         NULL    /* alloc */
2592 };
2593
2594 static void
2595 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2596 {
2597         ddt_bookmark_t ddb = { 0 };
2598         ddt_entry_t dde;
2599         int error;
2600
2601         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2602                 blkptr_t blk;
2603                 ddt_phys_t *ddp = dde.dde_phys;
2604
2605                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2606                         return;
2607
2608                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2609
2610                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2611                         if (ddp->ddp_phys_birth == 0)
2612                                 continue;
2613                         ddt_bp_create(ddb.ddb_checksum,
2614                             &dde.dde_key, ddp, &blk);
2615                         if (p == DDT_PHYS_DITTO) {
2616                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2617                         } else {
2618                                 zcb->zcb_dedup_asize +=
2619                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2620                                 zcb->zcb_dedup_blocks++;
2621                         }
2622                 }
2623                 if (!dump_opt['L']) {
2624                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2625                         ddt_enter(ddt);
2626                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2627                         ddt_exit(ddt);
2628                 }
2629         }
2630
2631         ASSERT(error == ENOENT);
2632 }
2633
2634 static void
2635 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2636 {
2637         zcb->zcb_spa = spa;
2638
2639         if (!dump_opt['L']) {
2640                 vdev_t *rvd = spa->spa_root_vdev;
2641                 for (uint64_t c = 0; c < rvd->vdev_children; c++) {
2642                         vdev_t *vd = rvd->vdev_child[c];
2643                         for (uint64_t m = 0; m < vd->vdev_ms_count; m++) {
2644                                 metaslab_t *msp = vd->vdev_ms[m];
2645                                 mutex_enter(&msp->ms_lock);
2646                                 metaslab_unload(msp);
2647
2648                                 /*
2649                                  * For leak detection, we overload the metaslab
2650                                  * ms_tree to contain allocated segments
2651                                  * instead of free segments. As a result,
2652                                  * we can't use the normal metaslab_load/unload
2653                                  * interfaces.
2654                                  */
2655                                 if (msp->ms_sm != NULL) {
2656                                         (void) fprintf(stderr,
2657                                             "\rloading space map for "
2658                                             "vdev %llu of %llu, "
2659                                             "metaslab %llu of %llu ...",
2660                                             (longlong_t)c,
2661                                             (longlong_t)rvd->vdev_children,
2662                                             (longlong_t)m,
2663                                             (longlong_t)vd->vdev_ms_count);
2664
2665                                         msp->ms_ops = &zdb_metaslab_ops;
2666
2667                                         /*
2668                                          * We don't want to spend the CPU
2669                                          * manipulating the size-ordered
2670                                          * tree, so clear the range_tree
2671                                          * ops.
2672                                          */
2673                                         msp->ms_tree->rt_ops = NULL;
2674                                         VERIFY0(space_map_load(msp->ms_sm,
2675                                             msp->ms_tree, SM_ALLOC));
2676                                         msp->ms_loaded = B_TRUE;
2677                                 }
2678                                 mutex_exit(&msp->ms_lock);
2679                         }
2680                 }
2681                 (void) fprintf(stderr, "\n");
2682         }
2683
2684         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2685
2686         zdb_ddt_leak_init(spa, zcb);
2687
2688         spa_config_exit(spa, SCL_CONFIG, FTAG);
2689 }
2690
2691 static void
2692 zdb_leak_fini(spa_t *spa)
2693 {
2694         if (!dump_opt['L']) {
2695                 vdev_t *rvd = spa->spa_root_vdev;
2696                 for (int c = 0; c < rvd->vdev_children; c++) {
2697                         vdev_t *vd = rvd->vdev_child[c];
2698                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2699                                 metaslab_t *msp = vd->vdev_ms[m];
2700                                 mutex_enter(&msp->ms_lock);
2701
2702                                 /*
2703                                  * The ms_tree has been overloaded to
2704                                  * contain allocated segments. Now that we
2705                                  * finished traversing all blocks, any
2706                                  * block that remains in the ms_tree
2707                                  * represents an allocated block that we
2708                                  * did not claim during the traversal.
2709                                  * Claimed blocks would have been removed
2710                                  * from the ms_tree.
2711                                  */
2712                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2713                                 msp->ms_loaded = B_FALSE;
2714
2715                                 mutex_exit(&msp->ms_lock);
2716                         }
2717                 }
2718         }
2719 }
2720
2721 /* ARGSUSED */
2722 static int
2723 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2724 {
2725         zdb_cb_t *zcb = arg;
2726
2727         if (dump_opt['b'] >= 5) {
2728                 char blkbuf[BP_SPRINTF_LEN];
2729                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2730                 (void) printf("[%s] %s\n",
2731                     "deferred free", blkbuf);
2732         }
2733         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2734         return (0);
2735 }
2736
2737 static int
2738 dump_block_stats(spa_t *spa)
2739 {
2740         zdb_cb_t zcb = { 0 };
2741         zdb_blkstats_t *zb, *tzb;
2742         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2743         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2744         boolean_t leaks = B_FALSE;
2745
2746         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2747             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2748             (dump_opt['c'] == 1) ? "metadata " : "",
2749             dump_opt['c'] ? "checksums " : "",
2750             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2751             !dump_opt['L'] ? "nothing leaked " : "");
2752
2753         /*
2754          * Load all space maps as SM_ALLOC maps, then traverse the pool
2755          * claiming each block we discover.  If the pool is perfectly
2756          * consistent, the space maps will be empty when we're done.
2757          * Anything left over is a leak; any block we can't claim (because
2758          * it's not part of any space map) is a double allocation,
2759          * reference to a freed block, or an unclaimed log block.
2760          */
2761         zdb_leak_init(spa, &zcb);
2762
2763         /*
2764          * If there's a deferred-free bplist, process that first.
2765          */
2766         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2767             count_block_cb, &zcb, NULL);
2768         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2769                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2770                     count_block_cb, &zcb, NULL);
2771         }
2772         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2773                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2774                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2775                     &zcb, NULL));
2776         }
2777
2778         if (dump_opt['c'] > 1)
2779                 flags |= TRAVERSE_PREFETCH_DATA;
2780
2781         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2782         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2783         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2784
2785         /*
2786          * If we've traversed the data blocks then we need to wait for those
2787          * I/Os to complete. We leverage "The Godfather" zio to wait on
2788          * all async I/Os to complete.
2789          */
2790         if (dump_opt['c']) {
2791                 for (int i = 0; i < max_ncpus; i++) {
2792                         (void) zio_wait(spa->spa_async_zio_root[i]);
2793                         spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
2794                             ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2795                             ZIO_FLAG_GODFATHER);
2796                 }
2797         }
2798
2799         if (zcb.zcb_haderrors) {
2800                 (void) printf("\nError counts:\n\n");
2801                 (void) printf("\t%5s  %s\n", "errno", "count");
2802                 for (int e = 0; e < 256; e++) {
2803                         if (zcb.zcb_errors[e] != 0) {
2804                                 (void) printf("\t%5d  %llu\n",
2805                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2806                         }
2807                 }
2808         }
2809
2810         /*
2811          * Report any leaked segments.
2812          */
2813         zdb_leak_fini(spa);
2814
2815         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2816
2817         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2818         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2819
2820         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2821         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2822
2823         if (total_found == total_alloc) {
2824                 if (!dump_opt['L'])
2825                         (void) printf("\n\tNo leaks (block sum matches space"
2826                             " maps exactly)\n");
2827         } else {
2828                 (void) printf("block traversal size %llu != alloc %llu "
2829                     "(%s %lld)\n",
2830                     (u_longlong_t)total_found,
2831                     (u_longlong_t)total_alloc,
2832                     (dump_opt['L']) ? "unreachable" : "leaked",
2833                     (longlong_t)(total_alloc - total_found));
2834                 leaks = B_TRUE;
2835         }
2836
2837         if (tzb->zb_count == 0)
2838                 return (2);
2839
2840         (void) printf("\n");
2841         (void) printf("\tbp count:      %10llu\n",
2842             (u_longlong_t)tzb->zb_count);
2843         (void) printf("\tganged count:  %10llu\n",
2844             (longlong_t)tzb->zb_gangs);
2845         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2846             (u_longlong_t)tzb->zb_lsize,
2847             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2848         (void) printf("\tbp physical:   %10llu      avg:"
2849             " %6llu     compression: %6.2f\n",
2850             (u_longlong_t)tzb->zb_psize,
2851             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2852             (double)tzb->zb_lsize / tzb->zb_psize);
2853         (void) printf("\tbp allocated:  %10llu      avg:"
2854             " %6llu     compression: %6.2f\n",
2855             (u_longlong_t)tzb->zb_asize,
2856             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2857             (double)tzb->zb_lsize / tzb->zb_asize);
2858         (void) printf("\tbp deduped:    %10llu    ref>1:"
2859             " %6llu   deduplication: %6.2f\n",
2860             (u_longlong_t)zcb.zcb_dedup_asize,
2861             (u_longlong_t)zcb.zcb_dedup_blocks,
2862             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2863         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2864             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2865
2866         for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
2867                 if (zcb.zcb_embedded_blocks[i] == 0)
2868                         continue;
2869                 (void) printf("\n");
2870                 (void) printf("\tadditional, non-pointer bps of type %u: "
2871                     "%10llu\n",
2872                     i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
2873
2874                 if (dump_opt['b'] >= 3) {
2875                         (void) printf("\t number of (compressed) bytes:  "
2876                             "number of bps\n");
2877                         dump_histogram(zcb.zcb_embedded_histogram[i],
2878                             sizeof (zcb.zcb_embedded_histogram[i]) /
2879                             sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
2880                 }
2881         }
2882
2883         if (tzb->zb_ditto_samevdev != 0) {
2884                 (void) printf("\tDittoed blocks on same vdev: %llu\n",
2885                     (longlong_t)tzb->zb_ditto_samevdev);
2886         }
2887
2888         if (dump_opt['b'] >= 2) {
2889                 int l, t, level;
2890                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2891                     "\t  avg\t comp\t%%Total\tType\n");
2892
2893                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2894                         char csize[32], lsize[32], psize[32], asize[32];
2895                         char avg[32], gang[32];
2896                         char *typename;
2897
2898                         /* make sure nicenum has enough space */
2899                         CTASSERT(sizeof (csize) >= NN_NUMBUF_SZ);
2900                         CTASSERT(sizeof (lsize) >= NN_NUMBUF_SZ);
2901                         CTASSERT(sizeof (psize) >= NN_NUMBUF_SZ);
2902                         CTASSERT(sizeof (asize) >= NN_NUMBUF_SZ);
2903                         CTASSERT(sizeof (avg) >= NN_NUMBUF_SZ);
2904                         CTASSERT(sizeof (gang) >= NN_NUMBUF_SZ);
2905
2906                         if (t < DMU_OT_NUMTYPES)
2907                                 typename = dmu_ot[t].ot_name;
2908                         else
2909                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2910
2911                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2912                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2913                                     "\t%5s\t%5s\t%6s\t%s\n",
2914                                     "-",
2915                                     "-",
2916                                     "-",
2917                                     "-",
2918                                     "-",
2919                                     "-",
2920                                     "-",
2921                                     typename);
2922                                 continue;
2923                         }
2924
2925                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2926                                 level = (l == -1 ? ZB_TOTAL : l);
2927                                 zb = &zcb.zcb_type[level][t];
2928
2929                                 if (zb->zb_asize == 0)
2930                                         continue;
2931
2932                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2933                                         continue;
2934
2935                                 if (level == 0 && zb->zb_asize ==
2936                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2937                                         continue;
2938
2939                                 zdb_nicenum(zb->zb_count, csize,
2940                                     sizeof (csize));
2941                                 zdb_nicenum(zb->zb_lsize, lsize,
2942                                     sizeof (lsize));
2943                                 zdb_nicenum(zb->zb_psize, psize,
2944                                     sizeof (psize));
2945                                 zdb_nicenum(zb->zb_asize, asize,
2946                                     sizeof (asize));
2947                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg,
2948                                     sizeof (avg));
2949                                 zdb_nicenum(zb->zb_gangs, gang, sizeof (gang));
2950
2951                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2952                                     "\t%5.2f\t%6.2f\t",
2953                                     csize, lsize, psize, asize, avg,
2954                                     (double)zb->zb_lsize / zb->zb_psize,
2955                                     100.0 * zb->zb_asize / tzb->zb_asize);
2956
2957                                 if (level == ZB_TOTAL)
2958                                         (void) printf("%s\n", typename);
2959                                 else
2960                                         (void) printf("    L%d %s\n",
2961                                             level, typename);
2962
2963                                 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2964                                         (void) printf("\t number of ganged "
2965                                             "blocks: %s\n", gang);
2966                                 }
2967
2968                                 if (dump_opt['b'] >= 4) {
2969                                         (void) printf("psize "
2970                                             "(in 512-byte sectors): "
2971                                             "number of blocks\n");
2972                                         dump_histogram(zb->zb_psize_histogram,
2973                                             PSIZE_HISTO_SIZE, 0);
2974                                 }
2975                         }
2976                 }
2977         }
2978
2979         (void) printf("\n");
2980
2981         if (leaks)
2982                 return (2);
2983
2984         if (zcb.zcb_haderrors)
2985                 return (3);
2986
2987         return (0);
2988 }
2989
2990 typedef struct zdb_ddt_entry {
2991         ddt_key_t       zdde_key;
2992         uint64_t        zdde_ref_blocks;
2993         uint64_t        zdde_ref_lsize;
2994         uint64_t        zdde_ref_psize;
2995         uint64_t        zdde_ref_dsize;
2996         avl_node_t      zdde_node;
2997 } zdb_ddt_entry_t;
2998
2999 /* ARGSUSED */
3000 static int
3001 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
3002     const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
3003 {
3004         avl_tree_t *t = arg;
3005         avl_index_t where;
3006         zdb_ddt_entry_t *zdde, zdde_search;
3007
3008         if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
3009                 return (0);
3010
3011         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
3012                 (void) printf("traversing objset %llu, %llu objects, "
3013                     "%lu blocks so far\n",
3014                     (u_longlong_t)zb->zb_objset,
3015                     (u_longlong_t)BP_GET_FILL(bp),
3016                     avl_numnodes(t));
3017         }
3018
3019         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
3020             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
3021                 return (0);
3022
3023         ddt_key_fill(&zdde_search.zdde_key, bp);
3024
3025         zdde = avl_find(t, &zdde_search, &where);
3026
3027         if (zdde == NULL) {
3028                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
3029                 zdde->zdde_key = zdde_search.zdde_key;
3030                 avl_insert(t, zdde, where);
3031         }
3032
3033         zdde->zdde_ref_blocks += 1;
3034         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
3035         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
3036         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
3037
3038         return (0);
3039 }
3040
3041 static void
3042 dump_simulated_ddt(spa_t *spa)
3043 {
3044         avl_tree_t t;
3045         void *cookie = NULL;
3046         zdb_ddt_entry_t *zdde;
3047         ddt_histogram_t ddh_total = { 0 };
3048         ddt_stat_t dds_total = { 0 };
3049
3050         avl_create(&t, ddt_entry_compare,
3051             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
3052
3053         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3054
3055         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
3056             zdb_ddt_add_cb, &t);
3057
3058         spa_config_exit(spa, SCL_CONFIG, FTAG);
3059
3060         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
3061                 ddt_stat_t dds;
3062                 uint64_t refcnt = zdde->zdde_ref_blocks;
3063                 ASSERT(refcnt != 0);
3064
3065                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
3066                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
3067                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
3068                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
3069
3070                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
3071                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
3072                 dds.dds_ref_psize = zdde->zdde_ref_psize;
3073                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
3074
3075                 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1],
3076                     &dds, 0);
3077
3078                 umem_free(zdde, sizeof (*zdde));
3079         }
3080
3081         avl_destroy(&t);
3082
3083         ddt_histogram_stat(&dds_total, &ddh_total);
3084
3085         (void) printf("Simulated DDT histogram:\n");
3086
3087         zpool_dump_ddt(&dds_total, &ddh_total);
3088
3089         dump_dedup_ratio(&dds_total);
3090 }
3091
3092 static void
3093 dump_zpool(spa_t *spa)
3094 {
3095         dsl_pool_t *dp = spa_get_dsl(spa);
3096         int rc = 0;
3097
3098         if (dump_opt['S']) {
3099                 dump_simulated_ddt(spa);
3100                 return;
3101         }
3102
3103         if (!dump_opt['e'] && dump_opt['C'] > 1) {
3104                 (void) printf("\nCached configuration:\n");
3105                 dump_nvlist(spa->spa_config, 8);
3106         }
3107
3108         if (dump_opt['C'])
3109                 dump_config(spa);
3110
3111         if (dump_opt['u'])
3112                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
3113
3114         if (dump_opt['D'])
3115                 dump_all_ddts(spa);
3116
3117         if (dump_opt['d'] > 2 || dump_opt['m'])
3118                 dump_metaslabs(spa);
3119         if (dump_opt['M'])
3120                 dump_metaslab_groups(spa);
3121
3122         if (dump_opt['d'] || dump_opt['i']) {
3123                 dump_dir(dp->dp_meta_objset);
3124                 if (dump_opt['d'] >= 3) {
3125                         dump_full_bpobj(&spa->spa_deferred_bpobj,
3126                             "Deferred frees", 0);
3127                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
3128                                 dump_full_bpobj(
3129                                     &spa->spa_dsl_pool->dp_free_bpobj,
3130                                     "Pool snapshot frees", 0);
3131                         }
3132
3133                         if (spa_feature_is_active(spa,
3134                             SPA_FEATURE_ASYNC_DESTROY)) {
3135                                 dump_bptree(spa->spa_meta_objset,
3136                                     spa->spa_dsl_pool->dp_bptree_obj,
3137                                     "Pool dataset frees");
3138                         }
3139                         dump_dtl(spa->spa_root_vdev, 0);
3140                 }
3141                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
3142                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
3143
3144                 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
3145                         uint64_t refcount;
3146
3147                         if (!(spa_feature_table[f].fi_flags &
3148                             ZFEATURE_FLAG_PER_DATASET)) {
3149                                 ASSERT0(dataset_feature_count[f]);
3150                                 continue;
3151                         }
3152                         (void) feature_get_refcount(spa,
3153                             &spa_feature_table[f], &refcount);
3154                         if (dataset_feature_count[f] != refcount) {
3155                                 (void) printf("%s feature refcount mismatch: "
3156                                     "%lld datasets != %lld refcount\n",
3157                                     spa_feature_table[f].fi_uname,
3158                                     (longlong_t)dataset_feature_count[f],
3159                                     (longlong_t)refcount);
3160                                 rc = 2;
3161                         } else {
3162                                 (void) printf("Verified %s feature refcount "
3163                                     "of %llu is correct\n",
3164                                     spa_feature_table[f].fi_uname,
3165                                     (longlong_t)refcount);
3166                         }
3167                 }
3168         }
3169         if (rc == 0 && (dump_opt['b'] || dump_opt['c']))
3170                 rc = dump_block_stats(spa);
3171
3172         if (rc == 0)
3173                 rc = verify_spacemap_refcounts(spa);
3174
3175         if (dump_opt['s'])
3176                 show_pool_stats(spa);
3177
3178         if (dump_opt['h'])
3179                 dump_history(spa);
3180
3181         if (rc != 0) {
3182                 dump_debug_buffer();
3183                 exit(rc);
3184         }
3185 }
3186
3187 #define ZDB_FLAG_CHECKSUM       0x0001
3188 #define ZDB_FLAG_DECOMPRESS     0x0002
3189 #define ZDB_FLAG_BSWAP          0x0004
3190 #define ZDB_FLAG_GBH            0x0008
3191 #define ZDB_FLAG_INDIRECT       0x0010
3192 #define ZDB_FLAG_PHYS           0x0020
3193 #define ZDB_FLAG_RAW            0x0040
3194 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
3195
3196 int flagbits[256];
3197
3198 static void
3199 zdb_print_blkptr(blkptr_t *bp, int flags)
3200 {
3201         char blkbuf[BP_SPRINTF_LEN];
3202
3203         if (flags & ZDB_FLAG_BSWAP)
3204                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
3205
3206         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
3207         (void) printf("%s\n", blkbuf);
3208 }
3209
3210 static void
3211 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
3212 {
3213         int i;
3214
3215         for (i = 0; i < nbps; i++)
3216                 zdb_print_blkptr(&bp[i], flags);
3217 }
3218
3219 static void
3220 zdb_dump_gbh(void *buf, int flags)
3221 {
3222         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
3223 }
3224
3225 static void
3226 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
3227 {
3228         if (flags & ZDB_FLAG_BSWAP)
3229                 byteswap_uint64_array(buf, size);
3230         (void) write(1, buf, size);
3231 }
3232
3233 static void
3234 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
3235 {
3236         uint64_t *d = (uint64_t *)buf;
3237         int nwords = size / sizeof (uint64_t);
3238         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
3239         int i, j;
3240         char *hdr, *c;
3241
3242
3243         if (do_bswap)
3244                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
3245         else
3246                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
3247
3248         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
3249
3250         for (i = 0; i < nwords; i += 2) {
3251                 (void) printf("%06llx:  %016llx  %016llx  ",
3252                     (u_longlong_t)(i * sizeof (uint64_t)),
3253                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
3254                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
3255
3256                 c = (char *)&d[i];
3257                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
3258                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
3259                 (void) printf("\n");
3260         }
3261 }
3262
3263 /*
3264  * There are two acceptable formats:
3265  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
3266  *      child[.child]*    - For example: 0.1.1
3267  *
3268  * The second form can be used to specify arbitrary vdevs anywhere
3269  * in the heirarchy.  For example, in a pool with a mirror of
3270  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
3271  */
3272 static vdev_t *
3273 zdb_vdev_lookup(vdev_t *vdev, char *path)
3274 {
3275         char *s, *p, *q;
3276         int i;
3277
3278         if (vdev == NULL)
3279                 return (NULL);
3280
3281         /* First, assume the x.x.x.x format */
3282         i = (int)strtoul(path, &s, 10);
3283         if (s == path || (s && *s != '.' && *s != '\0'))
3284                 goto name;
3285         if (i < 0 || i >= vdev->vdev_children)
3286                 return (NULL);
3287
3288         vdev = vdev->vdev_child[i];
3289         if (*s == '\0')
3290                 return (vdev);
3291         return (zdb_vdev_lookup(vdev, s+1));
3292
3293 name:
3294         for (i = 0; i < vdev->vdev_children; i++) {
3295                 vdev_t *vc = vdev->vdev_child[i];
3296
3297                 if (vc->vdev_path == NULL) {
3298                         vc = zdb_vdev_lookup(vc, path);
3299                         if (vc == NULL)
3300                                 continue;
3301                         else
3302                                 return (vc);
3303                 }
3304
3305                 p = strrchr(vc->vdev_path, '/');
3306                 p = p ? p + 1 : vc->vdev_path;
3307                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
3308
3309                 if (strcmp(vc->vdev_path, path) == 0)
3310                         return (vc);
3311                 if (strcmp(p, path) == 0)
3312                         return (vc);
3313                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
3314                         return (vc);
3315         }
3316
3317         return (NULL);
3318 }
3319
3320 /*
3321  * Read a block from a pool and print it out.  The syntax of the
3322  * block descriptor is:
3323  *
3324  *      pool:vdev_specifier:offset:size[:flags]
3325  *
3326  *      pool           - The name of the pool you wish to read from
3327  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
3328  *      offset         - offset, in hex, in bytes
3329  *      size           - Amount of data to read, in hex, in bytes
3330  *      flags          - A string of characters specifying options
3331  *               b: Decode a blkptr at given offset within block
3332  *              *c: Calculate and display checksums
3333  *               d: Decompress data before dumping
3334  *               e: Byteswap data before dumping
3335  *               g: Display data as a gang block header
3336  *               i: Display as an indirect block
3337  *               p: Do I/O to physical offset
3338  *               r: Dump raw data to stdout
3339  *
3340  *              * = not yet implemented
3341  */
3342 static void
3343 zdb_read_block(char *thing, spa_t *spa)
3344 {
3345         blkptr_t blk, *bp = &blk;
3346         dva_t *dva = bp->blk_dva;
3347         int flags = 0;
3348         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
3349         zio_t *zio;
3350         vdev_t *vd;
3351         void *pbuf, *lbuf, *buf;
3352         char *s, *p, *dup, *vdev, *flagstr;
3353         int i, error;
3354
3355         dup = strdup(thing);
3356         s = strtok(dup, ":");
3357         vdev = s ? s : "";
3358         s = strtok(NULL, ":");
3359         offset = strtoull(s ? s : "", NULL, 16);
3360         s = strtok(NULL, ":");
3361         size = strtoull(s ? s : "", NULL, 16);
3362         s = strtok(NULL, ":");
3363         flagstr = s ? s : "";
3364
3365         s = NULL;
3366         if (size == 0)
3367                 s = "size must not be zero";
3368         if (!IS_P2ALIGNED(size, DEV_BSIZE))
3369                 s = "size must be a multiple of sector size";
3370         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3371                 s = "offset must be a multiple of sector size";
3372         if (s) {
3373                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3374                 free(dup);
3375                 return;
3376         }
3377
3378         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3379                 for (i = 0; flagstr[i]; i++) {
3380                         int bit = flagbits[(uchar_t)flagstr[i]];
3381
3382                         if (bit == 0) {
3383                                 (void) printf("***Invalid flag: %c\n",
3384                                     flagstr[i]);
3385                                 continue;
3386                         }
3387                         flags |= bit;
3388
3389                         /* If it's not something with an argument, keep going */
3390                         if ((bit & (ZDB_FLAG_CHECKSUM |
3391                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3392                                 continue;
3393
3394                         p = &flagstr[i + 1];
3395                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
3396                                 blkptr_offset = strtoull(p, &p, 16);
3397                         if (*p != ':' && *p != '\0') {
3398                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3399                                 free(dup);
3400                                 return;
3401                         }
3402                         i += p - &flagstr[i + 1]; /* skip over the number */
3403                 }
3404         }
3405
3406         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3407         if (vd == NULL) {
3408                 (void) printf("***Invalid vdev: %s\n", vdev);
3409                 free(dup);
3410                 return;
3411         } else {
3412                 if (vd->vdev_path)
3413                         (void) fprintf(stderr, "Found vdev: %s\n",
3414                             vd->vdev_path);
3415                 else
3416                         (void) fprintf(stderr, "Found vdev type: %s\n",
3417                             vd->vdev_ops->vdev_op_type);
3418         }
3419
3420         psize = size;
3421         lsize = size;
3422
3423         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3424         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3425
3426         BP_ZERO(bp);
3427
3428         DVA_SET_VDEV(&dva[0], vd->vdev_id);
3429         DVA_SET_OFFSET(&dva[0], offset);
3430         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3431         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3432
3433         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3434
3435         BP_SET_LSIZE(bp, lsize);
3436         BP_SET_PSIZE(bp, psize);
3437         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3438         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3439         BP_SET_TYPE(bp, DMU_OT_NONE);
3440         BP_SET_LEVEL(bp, 0);
3441         BP_SET_DEDUP(bp, 0);
3442         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3443
3444         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3445         zio = zio_root(spa, NULL, NULL, 0);
3446
3447         if (vd == vd->vdev_top) {
3448                 /*
3449                  * Treat this as a normal block read.
3450                  */
3451                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3452                     ZIO_PRIORITY_SYNC_READ,
3453                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3454         } else {
3455                 /*
3456                  * Treat this as a vdev child I/O.
3457                  */
3458                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3459                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3460                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3461                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3462                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3463         }
3464
3465         error = zio_wait(zio);
3466         spa_config_exit(spa, SCL_STATE, FTAG);
3467
3468         if (error) {
3469                 (void) printf("Read of %s failed, error: %d\n", thing, error);
3470                 goto out;
3471         }
3472
3473         if (flags & ZDB_FLAG_DECOMPRESS) {
3474                 /*
3475                  * We don't know how the data was compressed, so just try
3476                  * every decompress function at every inflated blocksize.
3477                  */
3478                 enum zio_compress c;
3479                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3480                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3481
3482                 bcopy(pbuf, pbuf2, psize);
3483
3484                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3485                     SPA_MAXBLOCKSIZE - psize) == 0);
3486
3487                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3488                     SPA_MAXBLOCKSIZE - psize) == 0);
3489
3490                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3491                     lsize -= SPA_MINBLOCKSIZE) {
3492                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3493                                 if (zio_decompress_data(c, pbuf, lbuf,
3494                                     psize, lsize) == 0 &&
3495                                     zio_decompress_data(c, pbuf2, lbuf2,
3496                                     psize, lsize) == 0 &&
3497                                     bcmp(lbuf, lbuf2, lsize) == 0)
3498                                         break;
3499                         }
3500                         if (c != ZIO_COMPRESS_FUNCTIONS)
3501                                 break;
3502                         lsize -= SPA_MINBLOCKSIZE;
3503                 }
3504
3505                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3506                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3507
3508                 if (lsize <= psize) {
3509                         (void) printf("Decompress of %s failed\n", thing);
3510                         goto out;
3511                 }
3512                 buf = lbuf;
3513                 size = lsize;
3514         } else {
3515                 buf = pbuf;
3516                 size = psize;
3517         }
3518
3519         if (flags & ZDB_FLAG_PRINT_BLKPTR)
3520                 zdb_print_blkptr((blkptr_t *)(void *)
3521                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3522         else if (flags & ZDB_FLAG_RAW)
3523                 zdb_dump_block_raw(buf, size, flags);
3524         else if (flags & ZDB_FLAG_INDIRECT)
3525                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3526                     flags);
3527         else if (flags & ZDB_FLAG_GBH)
3528                 zdb_dump_gbh(buf, flags);
3529         else
3530                 zdb_dump_block(thing, buf, size, flags);
3531
3532 out:
3533         umem_free(pbuf, SPA_MAXBLOCKSIZE);
3534         umem_free(lbuf, SPA_MAXBLOCKSIZE);
3535         free(dup);
3536 }
3537
3538 static boolean_t
3539 pool_match(nvlist_t *cfg, char *tgt)
3540 {
3541         uint64_t v, guid = strtoull(tgt, NULL, 0);
3542         char *s;
3543
3544         if (guid != 0) {
3545                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3546                         return (v == guid);
3547         } else {
3548                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3549                         return (strcmp(s, tgt) == 0);
3550         }
3551         return (B_FALSE);
3552 }
3553
3554 static char *
3555 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3556 {
3557         nvlist_t *pools;
3558         nvlist_t *match = NULL;
3559         char *name = NULL;
3560         char *sepp = NULL;
3561         char sep = '\0';
3562         int count = 0;
3563         importargs_t args = { 0 };
3564
3565         args.paths = dirc;
3566         args.path = dirv;
3567         args.can_be_active = B_TRUE;
3568
3569         if ((sepp = strpbrk(*target, "/@")) != NULL) {
3570                 sep = *sepp;
3571                 *sepp = '\0';
3572         }
3573
3574         pools = zpool_search_import(g_zfs, &args);
3575
3576         if (pools != NULL) {
3577                 nvpair_t *elem = NULL;
3578                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3579                         verify(nvpair_value_nvlist(elem, configp) == 0);
3580                         if (pool_match(*configp, *target)) {
3581                                 count++;
3582                                 if (match != NULL) {
3583                                         /* print previously found config */
3584                                         if (name != NULL) {
3585                                                 (void) printf("%s\n", name);
3586                                                 dump_nvlist(match, 8);
3587                                                 name = NULL;
3588                                         }
3589                                         (void) printf("%s\n",
3590                                             nvpair_name(elem));
3591                                         dump_nvlist(*configp, 8);
3592                                 } else {
3593                                         match = *configp;
3594                                         name = nvpair_name(elem);
3595                                 }
3596                         }
3597                 }
3598         }
3599         if (count > 1)
3600                 (void) fatal("\tMatched %d pools - use pool GUID "
3601                     "instead of pool name or \n"
3602                     "\tpool name part of a dataset name to select pool", count);
3603
3604         if (sepp)
3605                 *sepp = sep;
3606         /*
3607          * If pool GUID was specified for pool id, replace it with pool name
3608          */
3609         if (name && (strstr(*target, name) != *target)) {
3610                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3611
3612                 *target = umem_alloc(sz, UMEM_NOFAIL);
3613                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3614         }
3615
3616         *configp = name ? match : NULL;
3617
3618         return (name);
3619 }
3620
3621 int
3622 main(int argc, char **argv)
3623 {
3624         int i, c;
3625         struct rlimit rl = { 1024, 1024 };
3626         spa_t *spa = NULL;
3627         objset_t *os = NULL;
3628         int dump_all = 1;
3629         int verbose = 0;
3630         int error = 0;
3631         char **searchdirs = NULL;
3632         int nsearch = 0;
3633         char *target;
3634         nvlist_t *policy = NULL;
3635         uint64_t max_txg = UINT64_MAX;
3636         int rewind = ZPOOL_NEVER_REWIND;
3637         char *spa_config_path_env;
3638         boolean_t target_is_spa = B_TRUE;
3639
3640         (void) setrlimit(RLIMIT_NOFILE, &rl);
3641         (void) enable_extended_FILE_stdio(-1, -1);
3642
3643         dprintf_setup(&argc, argv);
3644
3645         /*
3646          * If there is an environment variable SPA_CONFIG_PATH it overrides
3647          * default spa_config_path setting. If -U flag is specified it will
3648          * override this environment variable settings once again.
3649          */
3650         spa_config_path_env = getenv("SPA_CONFIG_PATH");
3651         if (spa_config_path_env != NULL)
3652                 spa_config_path = spa_config_path_env;
3653
3654         while ((c = getopt(argc, argv,
3655             "bcdhilmMI:suCDRSAFLXx:evp:t:U:PGo:")) != -1) {
3656                 switch (c) {
3657                 case 'b':
3658                 case 'c':
3659                 case 'd':
3660                 case 'h':
3661                 case 'i':
3662                 case 'l':
3663                 case 'm':
3664                 case 's':
3665                 case 'u':
3666                 case 'C':
3667                 case 'D':
3668                 case 'M':
3669                 case 'R':
3670                 case 'S':
3671                 case 'G':
3672                         dump_opt[c]++;
3673                         dump_all = 0;
3674                         break;
3675                 case 'A':
3676                 case 'F':
3677                 case 'L':
3678                 case 'X':
3679                 case 'e':
3680                 case 'P':
3681                         dump_opt[c]++;
3682                         break;
3683                 case 'I':
3684                         max_inflight = strtoull(optarg, NULL, 0);
3685                         if (max_inflight == 0) {
3686                                 (void) fprintf(stderr, "maximum number "
3687                                     "of inflight I/Os must be greater "
3688                                     "than 0\n");
3689                                 usage();
3690                         }
3691                         break;
3692                 case 'p':
3693                         if (searchdirs == NULL) {
3694                                 searchdirs = umem_alloc(sizeof (char *),
3695                                     UMEM_NOFAIL);
3696                         } else {
3697                                 char **tmp = umem_alloc((nsearch + 1) *
3698                                     sizeof (char *), UMEM_NOFAIL);
3699                                 bcopy(searchdirs, tmp, nsearch *
3700                                     sizeof (char *));
3701                                 umem_free(searchdirs,
3702                                     nsearch * sizeof (char *));
3703                                 searchdirs = tmp;
3704                         }
3705                         searchdirs[nsearch++] = optarg;
3706                         break;
3707                 case 't':
3708                         max_txg = strtoull(optarg, NULL, 0);
3709                         if (max_txg < TXG_INITIAL) {
3710                                 (void) fprintf(stderr, "incorrect txg "
3711                                     "specified: %s\n", optarg);
3712                                 usage();
3713                         }
3714                         break;
3715                 case 'U':
3716                         spa_config_path = optarg;
3717                         break;
3718                 case 'v':
3719                         verbose++;
3720                         break;
3721                 case 'x':
3722                         vn_dumpdir = optarg;
3723                         break;
3724                 case 'o':
3725                         error = set_global_var(optarg);
3726                         if (error != 0)
3727                                 usage();
3728                         break;
3729                 default:
3730                         usage();
3731                         break;
3732                 }
3733         }
3734
3735         if (!dump_opt['e'] && searchdirs != NULL) {
3736                 (void) fprintf(stderr, "-p option requires use of -e\n");
3737                 usage();
3738         }
3739
3740         /*
3741          * ZDB does not typically re-read blocks; therefore limit the ARC
3742          * to 256 MB, which can be used entirely for metadata.
3743          */
3744         zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024;
3745
3746         /*
3747          * "zdb -c" uses checksum-verifying scrub i/os which are async reads.
3748          * "zdb -b" uses traversal prefetch which uses async reads.
3749          * For good performance, let several of them be active at once.
3750          */
3751         zfs_vdev_async_read_max_active = 10;
3752
3753         kernel_init(FREAD);
3754         g_zfs = libzfs_init();
3755         if (g_zfs == NULL)
3756                 fatal("Fail to initialize zfs");
3757
3758         if (dump_all)
3759                 verbose = MAX(verbose, 1);
3760
3761         for (c = 0; c < 256; c++) {
3762                 if (dump_all && !strchr("elAFLRSXP", c))
3763                         dump_opt[c] = 1;
3764                 if (dump_opt[c])
3765                         dump_opt[c] += verbose;
3766         }
3767
3768         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3769         zfs_recover = (dump_opt['A'] > 1);
3770
3771         argc -= optind;
3772         argv += optind;
3773
3774         if (argc < 2 && dump_opt['R'])
3775                 usage();
3776         if (argc < 1) {
3777                 if (!dump_opt['e'] && dump_opt['C']) {
3778                         dump_cachefile(spa_config_path);
3779                         return (0);
3780                 }
3781                 usage();
3782         }
3783
3784         if (dump_opt['l']) {
3785                 dump_label(argv[0]);
3786                 return (0);
3787         }
3788
3789         if (dump_opt['X'] || dump_opt['F'])
3790                 rewind = ZPOOL_DO_REWIND |
3791                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3792
3793         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3794             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3795             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3796                 fatal("internal error: %s", strerror(ENOMEM));
3797
3798         error = 0;
3799         target = argv[0];
3800
3801         if (dump_opt['e']) {
3802                 nvlist_t *cfg = NULL;
3803                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3804
3805                 error = ENOENT;
3806                 if (name) {
3807                         if (dump_opt['C'] > 1) {
3808                                 (void) printf("\nConfiguration for import:\n");
3809                                 dump_nvlist(cfg, 8);
3810                         }
3811                         if (nvlist_add_nvlist(cfg,
3812                             ZPOOL_REWIND_POLICY, policy) != 0) {
3813                                 fatal("can't open '%s': %s",
3814                                     target, strerror(ENOMEM));
3815                         }
3816                         if ((error = spa_import(name, cfg, NULL,
3817                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3818                                 error = spa_import(name, cfg, NULL,
3819                                     ZFS_IMPORT_VERBATIM);
3820                         }
3821                 }
3822         }
3823
3824         if (strpbrk(target, "/@") != NULL) {
3825                 size_t targetlen;
3826
3827                 target_is_spa = B_FALSE;
3828                 /*
3829                  * Remove any trailing slash.  Later code would get confused
3830                  * by it, but we want to allow it so that "pool/" can
3831                  * indicate that we want to dump the topmost filesystem,
3832                  * rather than the whole pool.
3833                  */
3834                 targetlen = strlen(target);
3835                 if (targetlen != 0 && target[targetlen - 1] == '/')
3836                         target[targetlen - 1] = '\0';
3837         }
3838
3839         if (error == 0) {
3840                 if (target_is_spa || dump_opt['R']) {
3841                         error = spa_open_rewind(target, &spa, FTAG, policy,
3842                             NULL);
3843                         if (error) {
3844                                 /*
3845                                  * If we're missing the log device then
3846                                  * try opening the pool after clearing the
3847                                  * log state.
3848                                  */
3849                                 mutex_enter(&spa_namespace_lock);
3850                                 if ((spa = spa_lookup(target)) != NULL &&
3851                                     spa->spa_log_state == SPA_LOG_MISSING) {
3852                                         spa->spa_log_state = SPA_LOG_CLEAR;
3853                                         error = 0;
3854                                 }
3855                                 mutex_exit(&spa_namespace_lock);
3856
3857                                 if (!error) {
3858                                         error = spa_open_rewind(target, &spa,
3859                                             FTAG, policy, NULL);
3860                                 }
3861                         }
3862                 } else {
3863                         error = dmu_objset_own(target, DMU_OST_ANY,
3864                             B_TRUE, FTAG, &os);
3865                 }
3866         }
3867         nvlist_free(policy);
3868
3869         if (error)
3870                 fatal("can't open '%s': %s", target, strerror(error));
3871
3872         argv++;
3873         argc--;
3874         if (!dump_opt['R']) {
3875                 if (argc > 0) {
3876                         zopt_objects = argc;
3877                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3878                         for (i = 0; i < zopt_objects; i++) {
3879                                 errno = 0;
3880                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3881                                 if (zopt_object[i] == 0 && errno != 0)
3882                                         fatal("bad number %s: %s",
3883                                             argv[i], strerror(errno));
3884                         }
3885                 }
3886                 if (os != NULL) {
3887                         dump_dir(os);
3888                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3889                         dump_dir(spa->spa_meta_objset);
3890                 } else {
3891                         dump_zpool(spa);
3892                 }
3893         } else {
3894                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3895                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3896                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3897                 flagbits['e'] = ZDB_FLAG_BSWAP;
3898                 flagbits['g'] = ZDB_FLAG_GBH;
3899                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3900                 flagbits['p'] = ZDB_FLAG_PHYS;
3901                 flagbits['r'] = ZDB_FLAG_RAW;
3902
3903                 for (i = 0; i < argc; i++)
3904                         zdb_read_block(argv[i], spa);
3905         }
3906
3907         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3908
3909         fuid_table_destroy();
3910         sa_loaded = B_FALSE;
3911
3912         dump_debug_buffer();
3913
3914         libzfs_fini(g_zfs);
3915         kernel_fini();
3916
3917         return (0);
3918 }