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