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                 snprintf_blkptr(blkbuf, sizeof (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 snprintf_blkptr_compact(char *blkbuf, size_t buflen, 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                 snprintf_blkptr(blkbuf, buflen, bp);
1034                 return;
1035         }
1036
1037         blkbuf[0] = '\0';
1038
1039         for (int i = 0; i < ndvas; i++)
1040                 (void) snprintf(blkbuf + strlen(blkbuf),
1041                     buflen - strlen(blkbuf), "%llu:%llx:%llx ",
1042                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1043                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1044                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1045
1046         if (BP_IS_HOLE(bp)) {
1047                 (void) snprintf(blkbuf + strlen(blkbuf),
1048                     buflen - strlen(blkbuf), "B=%llu",
1049                     (u_longlong_t)bp->blk_birth);
1050         } else {
1051                 (void) snprintf(blkbuf + strlen(blkbuf),
1052                     buflen - strlen(blkbuf),
1053                     "%llxL/%llxP F=%llu B=%llu/%llu",
1054                     (u_longlong_t)BP_GET_LSIZE(bp),
1055                     (u_longlong_t)BP_GET_PSIZE(bp),
1056                     (u_longlong_t)bp->blk_fill,
1057                     (u_longlong_t)bp->blk_birth,
1058                     (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1059         }
1060 }
1061
1062 static void
1063 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
1064     const dnode_phys_t *dnp)
1065 {
1066         char blkbuf[BP_SPRINTF_LEN];
1067         int l;
1068
1069         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1070         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1071
1072         (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1073
1074         ASSERT(zb->zb_level >= 0);
1075
1076         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1077                 if (l == zb->zb_level) {
1078                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
1079                 } else {
1080                         (void) printf(" ");
1081                 }
1082         }
1083
1084         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1085         (void) printf("%s\n", blkbuf);
1086 }
1087
1088 static int
1089 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1090     blkptr_t *bp, const zbookmark_t *zb)
1091 {
1092         int err = 0;
1093
1094         if (bp->blk_birth == 0)
1095                 return (0);
1096
1097         print_indirect(bp, zb, dnp);
1098
1099         if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) {
1100                 uint32_t flags = ARC_WAIT;
1101                 int i;
1102                 blkptr_t *cbp;
1103                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1104                 arc_buf_t *buf;
1105                 uint64_t fill = 0;
1106
1107                 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1108                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1109                 if (err)
1110                         return (err);
1111                 ASSERT(buf->b_data);
1112
1113                 /* recursively visit blocks below this */
1114                 cbp = buf->b_data;
1115                 for (i = 0; i < epb; i++, cbp++) {
1116                         zbookmark_t czb;
1117
1118                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1119                             zb->zb_level - 1,
1120                             zb->zb_blkid * epb + i);
1121                         err = visit_indirect(spa, dnp, cbp, &czb);
1122                         if (err)
1123                                 break;
1124                         fill += cbp->blk_fill;
1125                 }
1126                 if (!err)
1127                         ASSERT3U(fill, ==, bp->blk_fill);
1128                 (void) arc_buf_remove_ref(buf, &buf);
1129         }
1130
1131         return (err);
1132 }
1133
1134 /*ARGSUSED*/
1135 static void
1136 dump_indirect(dnode_t *dn)
1137 {
1138         dnode_phys_t *dnp = dn->dn_phys;
1139         int j;
1140         zbookmark_t czb;
1141
1142         (void) printf("Indirect blocks:\n");
1143
1144         SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1145             dn->dn_object, dnp->dn_nlevels - 1, 0);
1146         for (j = 0; j < dnp->dn_nblkptr; j++) {
1147                 czb.zb_blkid = j;
1148                 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1149                     &dnp->dn_blkptr[j], &czb);
1150         }
1151
1152         (void) printf("\n");
1153 }
1154
1155 /*ARGSUSED*/
1156 static void
1157 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1158 {
1159         dsl_dir_phys_t *dd = data;
1160         time_t crtime;
1161         char nice[32];
1162
1163         if (dd == NULL)
1164                 return;
1165
1166         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1167
1168         crtime = dd->dd_creation_time;
1169         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1170         (void) printf("\t\thead_dataset_obj = %llu\n",
1171             (u_longlong_t)dd->dd_head_dataset_obj);
1172         (void) printf("\t\tparent_dir_obj = %llu\n",
1173             (u_longlong_t)dd->dd_parent_obj);
1174         (void) printf("\t\torigin_obj = %llu\n",
1175             (u_longlong_t)dd->dd_origin_obj);
1176         (void) printf("\t\tchild_dir_zapobj = %llu\n",
1177             (u_longlong_t)dd->dd_child_dir_zapobj);
1178         zdb_nicenum(dd->dd_used_bytes, nice);
1179         (void) printf("\t\tused_bytes = %s\n", nice);
1180         zdb_nicenum(dd->dd_compressed_bytes, nice);
1181         (void) printf("\t\tcompressed_bytes = %s\n", nice);
1182         zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1183         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
1184         zdb_nicenum(dd->dd_quota, nice);
1185         (void) printf("\t\tquota = %s\n", nice);
1186         zdb_nicenum(dd->dd_reserved, nice);
1187         (void) printf("\t\treserved = %s\n", nice);
1188         (void) printf("\t\tprops_zapobj = %llu\n",
1189             (u_longlong_t)dd->dd_props_zapobj);
1190         (void) printf("\t\tdeleg_zapobj = %llu\n",
1191             (u_longlong_t)dd->dd_deleg_zapobj);
1192         (void) printf("\t\tflags = %llx\n",
1193             (u_longlong_t)dd->dd_flags);
1194
1195 #define DO(which) \
1196         zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1197         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1198         DO(HEAD);
1199         DO(SNAP);
1200         DO(CHILD);
1201         DO(CHILD_RSRV);
1202         DO(REFRSRV);
1203 #undef DO
1204 }
1205
1206 /*ARGSUSED*/
1207 static void
1208 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1209 {
1210         dsl_dataset_phys_t *ds = data;
1211         time_t crtime;
1212         char used[32], compressed[32], uncompressed[32], unique[32];
1213         char blkbuf[BP_SPRINTF_LEN];
1214
1215         if (ds == NULL)
1216                 return;
1217
1218         ASSERT(size == sizeof (*ds));
1219         crtime = ds->ds_creation_time;
1220         zdb_nicenum(ds->ds_referenced_bytes, used);
1221         zdb_nicenum(ds->ds_compressed_bytes, compressed);
1222         zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1223         zdb_nicenum(ds->ds_unique_bytes, unique);
1224         snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp);
1225
1226         (void) printf("\t\tdir_obj = %llu\n",
1227             (u_longlong_t)ds->ds_dir_obj);
1228         (void) printf("\t\tprev_snap_obj = %llu\n",
1229             (u_longlong_t)ds->ds_prev_snap_obj);
1230         (void) printf("\t\tprev_snap_txg = %llu\n",
1231             (u_longlong_t)ds->ds_prev_snap_txg);
1232         (void) printf("\t\tnext_snap_obj = %llu\n",
1233             (u_longlong_t)ds->ds_next_snap_obj);
1234         (void) printf("\t\tsnapnames_zapobj = %llu\n",
1235             (u_longlong_t)ds->ds_snapnames_zapobj);
1236         (void) printf("\t\tnum_children = %llu\n",
1237             (u_longlong_t)ds->ds_num_children);
1238         (void) printf("\t\tuserrefs_obj = %llu\n",
1239             (u_longlong_t)ds->ds_userrefs_obj);
1240         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
1241         (void) printf("\t\tcreation_txg = %llu\n",
1242             (u_longlong_t)ds->ds_creation_txg);
1243         (void) printf("\t\tdeadlist_obj = %llu\n",
1244             (u_longlong_t)ds->ds_deadlist_obj);
1245         (void) printf("\t\tused_bytes = %s\n", used);
1246         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
1247         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1248         (void) printf("\t\tunique = %s\n", unique);
1249         (void) printf("\t\tfsid_guid = %llu\n",
1250             (u_longlong_t)ds->ds_fsid_guid);
1251         (void) printf("\t\tguid = %llu\n",
1252             (u_longlong_t)ds->ds_guid);
1253         (void) printf("\t\tflags = %llx\n",
1254             (u_longlong_t)ds->ds_flags);
1255         (void) printf("\t\tnext_clones_obj = %llu\n",
1256             (u_longlong_t)ds->ds_next_clones_obj);
1257         (void) printf("\t\tprops_obj = %llu\n",
1258             (u_longlong_t)ds->ds_props_obj);
1259         (void) printf("\t\tbp = %s\n", blkbuf);
1260 }
1261
1262 /* ARGSUSED */
1263 static int
1264 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1265 {
1266         char blkbuf[BP_SPRINTF_LEN];
1267
1268         if (bp->blk_birth != 0) {
1269                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
1270                 (void) printf("\t%s\n", blkbuf);
1271         }
1272         return (0);
1273 }
1274
1275 static void
1276 dump_bptree(objset_t *os, uint64_t obj, char *name)
1277 {
1278         char bytes[32];
1279         bptree_phys_t *bt;
1280         dmu_buf_t *db;
1281
1282         if (dump_opt['d'] < 3)
1283                 return;
1284
1285         VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1286         bt = db->db_data;
1287         zdb_nicenum(bt->bt_bytes, bytes);
1288         (void) printf("\n    %s: %llu datasets, %s\n",
1289             name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1290         dmu_buf_rele(db, FTAG);
1291
1292         if (dump_opt['d'] < 5)
1293                 return;
1294
1295         (void) printf("\n");
1296
1297         (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1298 }
1299
1300 /* ARGSUSED */
1301 static int
1302 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1303 {
1304         char blkbuf[BP_SPRINTF_LEN];
1305
1306         ASSERT(bp->blk_birth != 0);
1307         snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp);
1308         (void) printf("\t%s\n", blkbuf);
1309         return (0);
1310 }
1311
1312 static void
1313 dump_bpobj(bpobj_t *bpo, char *name, int indent)
1314 {
1315         char bytes[32];
1316         char comp[32];
1317         char uncomp[32];
1318
1319         if (dump_opt['d'] < 3)
1320                 return;
1321
1322         zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1323         if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1324                 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1325                 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1326                 (void) printf("    %*s: object %llu, %llu local blkptrs, "
1327                     "%llu subobjs, %s (%s/%s comp)\n",
1328                     indent * 8, name,
1329                     (u_longlong_t)bpo->bpo_object,
1330                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1331                     (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1332                     bytes, comp, uncomp);
1333
1334                 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1335                         uint64_t subobj;
1336                         bpobj_t subbpo;
1337                         int error;
1338                         VERIFY0(dmu_read(bpo->bpo_os,
1339                             bpo->bpo_phys->bpo_subobjs,
1340                             i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1341                         error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1342                         if (error != 0) {
1343                                 (void) printf("ERROR %u while trying to open "
1344                                     "subobj id %llu\n",
1345                                     error, (u_longlong_t)subobj);
1346                                 continue;
1347                         }
1348                         dump_bpobj(&subbpo, "subobj", indent + 1);
1349                         bpobj_close(&subbpo);
1350                 }
1351         } else {
1352                 (void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1353                     indent * 8, name,
1354                     (u_longlong_t)bpo->bpo_object,
1355                     (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1356                     bytes);
1357         }
1358
1359         if (dump_opt['d'] < 5)
1360                 return;
1361
1362
1363         if (indent == 0) {
1364                 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1365                 (void) printf("\n");
1366         }
1367 }
1368
1369 static void
1370 dump_deadlist(dsl_deadlist_t *dl)
1371 {
1372         dsl_deadlist_entry_t *dle;
1373         uint64_t unused;
1374         char bytes[32];
1375         char comp[32];
1376         char uncomp[32];
1377
1378         if (dump_opt['d'] < 3)
1379                 return;
1380
1381         zdb_nicenum(dl->dl_phys->dl_used, bytes);
1382         zdb_nicenum(dl->dl_phys->dl_comp, comp);
1383         zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1384         (void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1385             bytes, comp, uncomp);
1386
1387         if (dump_opt['d'] < 4)
1388                 return;
1389
1390         (void) printf("\n");
1391
1392         /* force the tree to be loaded */
1393         dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1394
1395         for (dle = avl_first(&dl->dl_tree); dle;
1396             dle = AVL_NEXT(&dl->dl_tree, dle)) {
1397                 if (dump_opt['d'] >= 5) {
1398                         char buf[128];
1399                         (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1400                             (longlong_t)dle->dle_mintxg,
1401                             (longlong_t)dle->dle_bpobj.bpo_object);
1402
1403                         dump_bpobj(&dle->dle_bpobj, buf, 0);
1404                 } else {
1405                         (void) printf("mintxg %llu -> obj %llu\n",
1406                             (longlong_t)dle->dle_mintxg,
1407                             (longlong_t)dle->dle_bpobj.bpo_object);
1408
1409                 }
1410         }
1411 }
1412
1413 static avl_tree_t idx_tree;
1414 static avl_tree_t domain_tree;
1415 static boolean_t fuid_table_loaded;
1416 static boolean_t sa_loaded;
1417 sa_attr_type_t *sa_attr_table;
1418
1419 static void
1420 fuid_table_destroy()
1421 {
1422         if (fuid_table_loaded) {
1423                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1424                 fuid_table_loaded = B_FALSE;
1425         }
1426 }
1427
1428 /*
1429  * print uid or gid information.
1430  * For normal POSIX id just the id is printed in decimal format.
1431  * For CIFS files with FUID the fuid is printed in hex followed by
1432  * the domain-rid string.
1433  */
1434 static void
1435 print_idstr(uint64_t id, const char *id_type)
1436 {
1437         if (FUID_INDEX(id)) {
1438                 char *domain;
1439
1440                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1441                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
1442                     (u_longlong_t)id, domain, (int)FUID_RID(id));
1443         } else {
1444                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1445         }
1446
1447 }
1448
1449 static void
1450 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1451 {
1452         uint32_t uid_idx, gid_idx;
1453
1454         uid_idx = FUID_INDEX(uid);
1455         gid_idx = FUID_INDEX(gid);
1456
1457         /* Load domain table, if not already loaded */
1458         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1459                 uint64_t fuid_obj;
1460
1461                 /* first find the fuid object.  It lives in the master node */
1462                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1463                     8, 1, &fuid_obj) == 0);
1464                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1465                 (void) zfs_fuid_table_load(os, fuid_obj,
1466                     &idx_tree, &domain_tree);
1467                 fuid_table_loaded = B_TRUE;
1468         }
1469
1470         print_idstr(uid, "uid");
1471         print_idstr(gid, "gid");
1472 }
1473
1474 /*ARGSUSED*/
1475 static void
1476 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1477 {
1478         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
1479         sa_handle_t *hdl;
1480         uint64_t xattr, rdev, gen;
1481         uint64_t uid, gid, mode, fsize, parent, links;
1482         uint64_t pflags;
1483         uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1484         time_t z_crtime, z_atime, z_mtime, z_ctime;
1485         sa_bulk_attr_t bulk[12];
1486         int idx = 0;
1487         int error;
1488
1489         if (!sa_loaded) {
1490                 uint64_t sa_attrs = 0;
1491                 uint64_t version;
1492
1493                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1494                     8, 1, &version) == 0);
1495                 if (version >= ZPL_VERSION_SA) {
1496                         VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1497                             8, 1, &sa_attrs) == 0);
1498                 }
1499                 if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1500                     ZPL_END, &sa_attr_table)) != 0) {
1501                         (void) printf("sa_setup failed errno %d, can't "
1502                             "display znode contents\n", error);
1503                         return;
1504                 }
1505                 sa_loaded = B_TRUE;
1506         }
1507
1508         if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1509                 (void) printf("Failed to get handle for SA znode\n");
1510                 return;
1511         }
1512
1513         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1514         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1515         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1516             &links, 8);
1517         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1518         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1519             &mode, 8);
1520         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1521             NULL, &parent, 8);
1522         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1523             &fsize, 8);
1524         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1525             acctm, 16);
1526         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1527             modtm, 16);
1528         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1529             crtm, 16);
1530         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1531             chgtm, 16);
1532         SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1533             &pflags, 8);
1534
1535         if (sa_bulk_lookup(hdl, bulk, idx)) {
1536                 (void) sa_handle_destroy(hdl);
1537                 return;
1538         }
1539
1540         error = zfs_obj_to_path(os, object, path, sizeof (path));
1541         if (error != 0) {
1542                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1543                     (u_longlong_t)object);
1544         }
1545         if (dump_opt['d'] < 3) {
1546                 (void) printf("\t%s\n", path);
1547                 (void) sa_handle_destroy(hdl);
1548                 return;
1549         }
1550
1551         z_crtime = (time_t)crtm[0];
1552         z_atime = (time_t)acctm[0];
1553         z_mtime = (time_t)modtm[0];
1554         z_ctime = (time_t)chgtm[0];
1555
1556         (void) printf("\tpath   %s\n", path);
1557         dump_uidgid(os, uid, gid);
1558         (void) printf("\tatime  %s", ctime(&z_atime));
1559         (void) printf("\tmtime  %s", ctime(&z_mtime));
1560         (void) printf("\tctime  %s", ctime(&z_ctime));
1561         (void) printf("\tcrtime %s", ctime(&z_crtime));
1562         (void) printf("\tgen    %llu\n", (u_longlong_t)gen);
1563         (void) printf("\tmode   %llo\n", (u_longlong_t)mode);
1564         (void) printf("\tsize   %llu\n", (u_longlong_t)fsize);
1565         (void) printf("\tparent %llu\n", (u_longlong_t)parent);
1566         (void) printf("\tlinks  %llu\n", (u_longlong_t)links);
1567         (void) printf("\tpflags %llx\n", (u_longlong_t)pflags);
1568         if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1569             sizeof (uint64_t)) == 0)
1570                 (void) printf("\txattr  %llu\n", (u_longlong_t)xattr);
1571         if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1572             sizeof (uint64_t)) == 0)
1573                 (void) printf("\trdev   0x%016llx\n", (u_longlong_t)rdev);
1574         sa_handle_destroy(hdl);
1575 }
1576
1577 /*ARGSUSED*/
1578 static void
1579 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1580 {
1581 }
1582
1583 /*ARGSUSED*/
1584 static void
1585 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1586 {
1587 }
1588
1589 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1590         dump_none,              /* unallocated                  */
1591         dump_zap,               /* object directory             */
1592         dump_uint64,            /* object array                 */
1593         dump_none,              /* packed nvlist                */
1594         dump_packed_nvlist,     /* packed nvlist size           */
1595         dump_none,              /* bplist                       */
1596         dump_none,              /* bplist header                */
1597         dump_none,              /* SPA space map header         */
1598         dump_none,              /* SPA space map                */
1599         dump_none,              /* ZIL intent log               */
1600         dump_dnode,             /* DMU dnode                    */
1601         dump_dmu_objset,        /* DMU objset                   */
1602         dump_dsl_dir,           /* DSL directory                */
1603         dump_zap,               /* DSL directory child map      */
1604         dump_zap,               /* DSL dataset snap map         */
1605         dump_zap,               /* DSL props                    */
1606         dump_dsl_dataset,       /* DSL dataset                  */
1607         dump_znode,             /* ZFS znode                    */
1608         dump_acl,               /* ZFS V0 ACL                   */
1609         dump_uint8,             /* ZFS plain file               */
1610         dump_zpldir,            /* ZFS directory                */
1611         dump_zap,               /* ZFS master node              */
1612         dump_zap,               /* ZFS delete queue             */
1613         dump_uint8,             /* zvol object                  */
1614         dump_zap,               /* zvol prop                    */
1615         dump_uint8,             /* other uint8[]                */
1616         dump_uint64,            /* other uint64[]               */
1617         dump_zap,               /* other ZAP                    */
1618         dump_zap,               /* persistent error log         */
1619         dump_uint8,             /* SPA history                  */
1620         dump_history_offsets,   /* SPA history offsets          */
1621         dump_zap,               /* Pool properties              */
1622         dump_zap,               /* DSL permissions              */
1623         dump_acl,               /* ZFS ACL                      */
1624         dump_uint8,             /* ZFS SYSACL                   */
1625         dump_none,              /* FUID nvlist                  */
1626         dump_packed_nvlist,     /* FUID nvlist size             */
1627         dump_zap,               /* DSL dataset next clones      */
1628         dump_zap,               /* DSL scrub queue              */
1629         dump_zap,               /* ZFS user/group used          */
1630         dump_zap,               /* ZFS user/group quota         */
1631         dump_zap,               /* snapshot refcount tags       */
1632         dump_ddt_zap,           /* DDT ZAP object               */
1633         dump_zap,               /* DDT statistics               */
1634         dump_znode,             /* SA object                    */
1635         dump_zap,               /* SA Master Node               */
1636         dump_sa_attrs,          /* SA attribute registration    */
1637         dump_sa_layouts,        /* SA attribute layouts         */
1638         dump_zap,               /* DSL scrub translations       */
1639         dump_none,              /* fake dedup BP                */
1640         dump_zap,               /* deadlist                     */
1641         dump_none,              /* deadlist hdr                 */
1642         dump_zap,               /* dsl clones                   */
1643         dump_none,              /* bpobj subobjs                */
1644         dump_unknown,           /* Unknown type, must be last   */
1645 };
1646
1647 static void
1648 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1649 {
1650         dmu_buf_t *db = NULL;
1651         dmu_object_info_t doi;
1652         dnode_t *dn;
1653         void *bonus = NULL;
1654         size_t bsize = 0;
1655         char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1656         char bonus_size[32];
1657         char aux[50];
1658         int error;
1659
1660         if (*print_header) {
1661                 (void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1662                     "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1663                     "%full", "type");
1664                 *print_header = 0;
1665         }
1666
1667         if (object == 0) {
1668                 dn = DMU_META_DNODE(os);
1669         } else {
1670                 error = dmu_bonus_hold(os, object, FTAG, &db);
1671                 if (error)
1672                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1673                             object, error);
1674                 bonus = db->db_data;
1675                 bsize = db->db_size;
1676                 dn = DB_DNODE((dmu_buf_impl_t *)db);
1677         }
1678         dmu_object_info_from_dnode(dn, &doi);
1679
1680         zdb_nicenum(doi.doi_metadata_block_size, iblk);
1681         zdb_nicenum(doi.doi_data_block_size, dblk);
1682         zdb_nicenum(doi.doi_max_offset, lsize);
1683         zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1684         zdb_nicenum(doi.doi_bonus_size, bonus_size);
1685         (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1686             doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1687             doi.doi_max_offset);
1688
1689         aux[0] = '\0';
1690
1691         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1692                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1693                     ZDB_CHECKSUM_NAME(doi.doi_checksum));
1694         }
1695
1696         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1697                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1698                     ZDB_COMPRESS_NAME(doi.doi_compress));
1699         }
1700
1701         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1702             (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1703             asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1704
1705         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1706                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1707                     "", "", "", "", "", bonus_size, "bonus",
1708                     ZDB_OT_NAME(doi.doi_bonus_type));
1709         }
1710
1711         if (verbosity >= 4) {
1712                 (void) printf("\tdnode flags: %s%s%s\n",
1713                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1714                     "USED_BYTES " : "",
1715                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1716                     "USERUSED_ACCOUNTED " : "",
1717                     (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1718                     "SPILL_BLKPTR" : "");
1719                 (void) printf("\tdnode maxblkid: %llu\n",
1720                     (longlong_t)dn->dn_phys->dn_maxblkid);
1721
1722                 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1723                     bonus, bsize);
1724                 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1725                 *print_header = 1;
1726         }
1727
1728         if (verbosity >= 5)
1729                 dump_indirect(dn);
1730
1731         if (verbosity >= 5) {
1732                 /*
1733                  * Report the list of segments that comprise the object.
1734                  */
1735                 uint64_t start = 0;
1736                 uint64_t end;
1737                 uint64_t blkfill = 1;
1738                 int minlvl = 1;
1739
1740                 if (dn->dn_type == DMU_OT_DNODE) {
1741                         minlvl = 0;
1742                         blkfill = DNODES_PER_BLOCK;
1743                 }
1744
1745                 for (;;) {
1746                         char segsize[32];
1747                         error = dnode_next_offset(dn,
1748                             0, &start, minlvl, blkfill, 0);
1749                         if (error)
1750                                 break;
1751                         end = start;
1752                         error = dnode_next_offset(dn,
1753                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1754                         zdb_nicenum(end - start, segsize);
1755                         (void) printf("\t\tsegment [%016llx, %016llx)"
1756                             " size %5s\n", (u_longlong_t)start,
1757                             (u_longlong_t)end, segsize);
1758                         if (error)
1759                                 break;
1760                         start = end;
1761                 }
1762         }
1763
1764         if (db != NULL)
1765                 dmu_buf_rele(db, FTAG);
1766 }
1767
1768 static char *objset_types[DMU_OST_NUMTYPES] = {
1769         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1770
1771 static void
1772 dump_dir(objset_t *os)
1773 {
1774         dmu_objset_stats_t dds;
1775         uint64_t object, object_count;
1776         uint64_t refdbytes, usedobjs, scratch;
1777         char numbuf[32];
1778         char blkbuf[BP_SPRINTF_LEN + 20];
1779         char osname[MAXNAMELEN];
1780         char *type = "UNKNOWN";
1781         int verbosity = dump_opt['d'];
1782         int print_header = 1;
1783         int i, error;
1784
1785         dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1786         dmu_objset_fast_stat(os, &dds);
1787         dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1788
1789         if (dds.dds_type < DMU_OST_NUMTYPES)
1790                 type = objset_types[dds.dds_type];
1791
1792         if (dds.dds_type == DMU_OST_META) {
1793                 dds.dds_creation_txg = TXG_INITIAL;
1794                 usedobjs = os->os_rootbp->blk_fill;
1795                 refdbytes = os->os_spa->spa_dsl_pool->
1796                     dp_mos_dir->dd_phys->dd_used_bytes;
1797         } else {
1798                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1799         }
1800
1801         ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1802
1803         zdb_nicenum(refdbytes, numbuf);
1804
1805         if (verbosity >= 4) {
1806                 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp ");
1807                 (void) snprintf_blkptr(blkbuf + strlen(blkbuf),
1808                     sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp);
1809         } else {
1810                 blkbuf[0] = '\0';
1811         }
1812
1813         dmu_objset_name(os, osname);
1814
1815         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1816             "%s, %llu objects%s\n",
1817             osname, type, (u_longlong_t)dmu_objset_id(os),
1818             (u_longlong_t)dds.dds_creation_txg,
1819             numbuf, (u_longlong_t)usedobjs, blkbuf);
1820
1821         if (zopt_objects != 0) {
1822                 for (i = 0; i < zopt_objects; i++)
1823                         dump_object(os, zopt_object[i], verbosity,
1824                             &print_header);
1825                 (void) printf("\n");
1826                 return;
1827         }
1828
1829         if (dump_opt['i'] != 0 || verbosity >= 2)
1830                 dump_intent_log(dmu_objset_zil(os));
1831
1832         if (dmu_objset_ds(os) != NULL)
1833                 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1834
1835         if (verbosity < 2)
1836                 return;
1837
1838         if (BP_IS_HOLE(os->os_rootbp))
1839                 return;
1840
1841         dump_object(os, 0, verbosity, &print_header);
1842         object_count = 0;
1843         if (DMU_USERUSED_DNODE(os) != NULL &&
1844             DMU_USERUSED_DNODE(os)->dn_type != 0) {
1845                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1846                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1847         }
1848
1849         object = 0;
1850         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1851                 dump_object(os, object, verbosity, &print_header);
1852                 object_count++;
1853         }
1854
1855         ASSERT3U(object_count, ==, usedobjs);
1856
1857         (void) printf("\n");
1858
1859         if (error != ESRCH) {
1860                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1861                 abort();
1862         }
1863 }
1864
1865 static void
1866 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1867 {
1868         time_t timestamp = ub->ub_timestamp;
1869
1870         (void) printf(header ? header : "");
1871         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1872         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1873         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1874         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1875         (void) printf("\ttimestamp = %llu UTC = %s",
1876             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1877         if (dump_opt['u'] >= 3) {
1878                 char blkbuf[BP_SPRINTF_LEN];
1879                 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp);
1880                 (void) printf("\trootbp = %s\n", blkbuf);
1881         }
1882         (void) printf(footer ? footer : "");
1883 }
1884
1885 static void
1886 dump_config(spa_t *spa)
1887 {
1888         dmu_buf_t *db;
1889         size_t nvsize = 0;
1890         int error = 0;
1891
1892
1893         error = dmu_bonus_hold(spa->spa_meta_objset,
1894             spa->spa_config_object, FTAG, &db);
1895
1896         if (error == 0) {
1897                 nvsize = *(uint64_t *)db->db_data;
1898                 dmu_buf_rele(db, FTAG);
1899
1900                 (void) printf("\nMOS Configuration:\n");
1901                 dump_packed_nvlist(spa->spa_meta_objset,
1902                     spa->spa_config_object, (void *)&nvsize, 1);
1903         } else {
1904                 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1905                     (u_longlong_t)spa->spa_config_object, error);
1906         }
1907 }
1908
1909 static void
1910 dump_cachefile(const char *cachefile)
1911 {
1912         int fd;
1913         struct stat64 statbuf;
1914         char *buf;
1915         nvlist_t *config;
1916
1917         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1918                 (void) printf("cannot open '%s': %s\n", cachefile,
1919                     strerror(errno));
1920                 exit(1);
1921         }
1922
1923         if (fstat64(fd, &statbuf) != 0) {
1924                 (void) printf("failed to stat '%s': %s\n", cachefile,
1925                     strerror(errno));
1926                 exit(1);
1927         }
1928
1929         if ((buf = malloc(statbuf.st_size)) == NULL) {
1930                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1931                     (u_longlong_t)statbuf.st_size);
1932                 exit(1);
1933         }
1934
1935         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1936                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1937                     (u_longlong_t)statbuf.st_size);
1938                 exit(1);
1939         }
1940
1941         (void) close(fd);
1942
1943         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1944                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1945                 exit(1);
1946         }
1947
1948         free(buf);
1949
1950         dump_nvlist(config, 0);
1951
1952         nvlist_free(config);
1953 }
1954
1955 #define ZDB_MAX_UB_HEADER_SIZE 32
1956
1957 static void
1958 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1959 {
1960         vdev_t vd;
1961         vdev_t *vdp = &vd;
1962         char header[ZDB_MAX_UB_HEADER_SIZE];
1963
1964         vd.vdev_ashift = ashift;
1965         vdp->vdev_top = vdp;
1966
1967         for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1968                 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1969                 uberblock_t *ub = (void *)((char *)lbl + uoff);
1970
1971                 if (uberblock_verify(ub))
1972                         continue;
1973                 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1974                     "Uberblock[%d]\n", i);
1975                 dump_uberblock(ub, header, "");
1976         }
1977 }
1978
1979 static void
1980 dump_label(const char *dev)
1981 {
1982         int fd;
1983         vdev_label_t label;
1984         char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1985         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1986         struct stat64 statbuf;
1987         uint64_t psize, ashift;
1988         int len = strlen(dev) + 1;
1989
1990         if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1991                 len++;
1992                 path = malloc(len);
1993                 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1994         } else {
1995                 path = strdup(dev);
1996         }
1997
1998         if ((fd = open64(path, O_RDONLY)) < 0) {
1999                 (void) printf("cannot open '%s': %s\n", path, strerror(errno));
2000                 free(path);
2001                 exit(1);
2002         }
2003
2004         if (fstat64(fd, &statbuf) != 0) {
2005                 (void) printf("failed to stat '%s': %s\n", path,
2006                     strerror(errno));
2007                 free(path);
2008                 (void) close(fd);
2009                 exit(1);
2010         }
2011
2012         if (S_ISBLK(statbuf.st_mode)) {
2013                 (void) printf("cannot use '%s': character device required\n",
2014                     path);
2015                 free(path);
2016                 (void) close(fd);
2017                 exit(1);
2018         }
2019
2020         psize = statbuf.st_size;
2021         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2022
2023         for (int l = 0; l < VDEV_LABELS; l++) {
2024                 nvlist_t *config = NULL;
2025
2026                 (void) printf("--------------------------------------------\n");
2027                 (void) printf("LABEL %d\n", l);
2028                 (void) printf("--------------------------------------------\n");
2029
2030                 if (pread64(fd, &label, sizeof (label),
2031                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2032                         (void) printf("failed to read label %d\n", l);
2033                         continue;
2034                 }
2035
2036                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2037                         (void) printf("failed to unpack label %d\n", l);
2038                         ashift = SPA_MINBLOCKSHIFT;
2039                 } else {
2040                         nvlist_t *vdev_tree = NULL;
2041
2042                         dump_nvlist(config, 4);
2043                         if ((nvlist_lookup_nvlist(config,
2044                             ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2045                             (nvlist_lookup_uint64(vdev_tree,
2046                             ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2047                                 ashift = SPA_MINBLOCKSHIFT;
2048                         nvlist_free(config);
2049                 }
2050                 if (dump_opt['u'])
2051                         dump_label_uberblocks(&label, ashift);
2052         }
2053
2054         free(path);
2055         (void) close(fd);
2056 }
2057
2058 /*ARGSUSED*/
2059 static int
2060 dump_one_dir(const char *dsname, void *arg)
2061 {
2062         int error;
2063         objset_t *os;
2064
2065         error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2066         if (error) {
2067                 (void) printf("Could not open %s, error %d\n", dsname, error);
2068                 return (0);
2069         }
2070         dump_dir(os);
2071         dmu_objset_disown(os, FTAG);
2072         fuid_table_destroy();
2073         sa_loaded = B_FALSE;
2074         return (0);
2075 }
2076
2077 /*
2078  * Block statistics.
2079  */
2080 #define PSIZE_HISTO_SIZE (SPA_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1)
2081 typedef struct zdb_blkstats {
2082         uint64_t zb_asize;
2083         uint64_t zb_lsize;
2084         uint64_t zb_psize;
2085         uint64_t zb_count;
2086         uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2087 } zdb_blkstats_t;
2088
2089 /*
2090  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2091  */
2092 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0)
2093 #define ZDB_OT_DITTO    (DMU_OT_NUMTYPES + 1)
2094 #define ZDB_OT_OTHER    (DMU_OT_NUMTYPES + 2)
2095 #define ZDB_OT_TOTAL    (DMU_OT_NUMTYPES + 3)
2096
2097 static char *zdb_ot_extname[] = {
2098         "deferred free",
2099         "dedup ditto",
2100         "other",
2101         "Total",
2102 };
2103
2104 #define ZB_TOTAL        DN_MAX_LEVELS
2105
2106 typedef struct zdb_cb {
2107         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2108         uint64_t        zcb_dedup_asize;
2109         uint64_t        zcb_dedup_blocks;
2110         uint64_t        zcb_start;
2111         uint64_t        zcb_lastprint;
2112         uint64_t        zcb_totalasize;
2113         uint64_t        zcb_errors[256];
2114         int             zcb_readfails;
2115         int             zcb_haderrors;
2116         spa_t           *zcb_spa;
2117 } zdb_cb_t;
2118
2119 static void
2120 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2121     dmu_object_type_t type)
2122 {
2123         uint64_t refcnt = 0;
2124
2125         ASSERT(type < ZDB_OT_TOTAL);
2126
2127         if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2128                 return;
2129
2130         for (int i = 0; i < 4; i++) {
2131                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2132                 int t = (i & 1) ? type : ZDB_OT_TOTAL;
2133                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2134
2135                 zb->zb_asize += BP_GET_ASIZE(bp);
2136                 zb->zb_lsize += BP_GET_LSIZE(bp);
2137                 zb->zb_psize += BP_GET_PSIZE(bp);
2138                 zb->zb_count++;
2139                 zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++;
2140         }
2141
2142         if (dump_opt['L'])
2143                 return;
2144
2145         if (BP_GET_DEDUP(bp)) {
2146                 ddt_t *ddt;
2147                 ddt_entry_t *dde;
2148
2149                 ddt = ddt_select(zcb->zcb_spa, bp);
2150                 ddt_enter(ddt);
2151                 dde = ddt_lookup(ddt, bp, B_FALSE);
2152
2153                 if (dde == NULL) {
2154                         refcnt = 0;
2155                 } else {
2156                         ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2157                         ddt_phys_decref(ddp);
2158                         refcnt = ddp->ddp_refcnt;
2159                         if (ddt_phys_total_refcnt(dde) == 0)
2160                                 ddt_remove(ddt, dde);
2161                 }
2162                 ddt_exit(ddt);
2163         }
2164
2165         VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2166             refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2167             bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2168 }
2169
2170 /* ARGSUSED */
2171 static void
2172 zdb_blkptr_done(zio_t *zio)
2173 {
2174         spa_t *spa = zio->io_spa;
2175         blkptr_t *bp = zio->io_bp;
2176         int ioerr = zio->io_error;
2177         zdb_cb_t *zcb = zio->io_private;
2178         zbookmark_t *zb = &zio->io_bookmark;
2179
2180         zio_data_buf_free(zio->io_data, zio->io_size);
2181
2182         mutex_enter(&spa->spa_scrub_lock);
2183         spa->spa_scrub_inflight--;
2184         cv_broadcast(&spa->spa_scrub_io_cv);
2185
2186         if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2187                 char blkbuf[BP_SPRINTF_LEN];
2188
2189                 zcb->zcb_haderrors = 1;
2190                 zcb->zcb_errors[ioerr]++;
2191
2192                 if (dump_opt['b'] >= 2)
2193                         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2194                 else
2195                         blkbuf[0] = '\0';
2196
2197                 (void) printf("zdb_blkptr_cb: "
2198                     "Got error %d reading "
2199                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2200                     ioerr,
2201                     (u_longlong_t)zb->zb_objset,
2202                     (u_longlong_t)zb->zb_object,
2203                     (u_longlong_t)zb->zb_level,
2204                     (u_longlong_t)zb->zb_blkid,
2205                     blkbuf);
2206         }
2207         mutex_exit(&spa->spa_scrub_lock);
2208 }
2209
2210 /* ARGSUSED */
2211 static int
2212 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2213     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2214 {
2215         zdb_cb_t *zcb = arg;
2216         dmu_object_type_t type;
2217         boolean_t is_metadata;
2218
2219         if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
2220                 char blkbuf[BP_SPRINTF_LEN];
2221                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2222                 (void) printf("objset %llu object %llu "
2223                     "level %lld offset 0x%llx %s\n",
2224                     (u_longlong_t)zb->zb_objset,
2225                     (u_longlong_t)zb->zb_object,
2226                     (longlong_t)zb->zb_level,
2227                     (u_longlong_t)blkid2offset(dnp, bp, zb),
2228                     blkbuf);
2229         }
2230
2231         if (BP_IS_HOLE(bp))
2232                 return (0);
2233
2234         type = BP_GET_TYPE(bp);
2235
2236         zdb_count_block(zcb, zilog, bp,
2237             (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2238
2239         is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2240
2241         if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2242                 size_t size = BP_GET_PSIZE(bp);
2243                 void *data = zio_data_buf_alloc(size);
2244                 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2245
2246                 /* If it's an intent log block, failure is expected. */
2247                 if (zb->zb_level == ZB_ZIL_LEVEL)
2248                         flags |= ZIO_FLAG_SPECULATIVE;
2249
2250                 mutex_enter(&spa->spa_scrub_lock);
2251                 while (spa->spa_scrub_inflight > max_inflight)
2252                         cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2253                 spa->spa_scrub_inflight++;
2254                 mutex_exit(&spa->spa_scrub_lock);
2255
2256                 zio_nowait(zio_read(NULL, spa, bp, data, size,
2257                     zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2258         }
2259
2260         zcb->zcb_readfails = 0;
2261
2262         if (dump_opt['b'] < 5 && isatty(STDERR_FILENO) &&
2263             gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2264                 uint64_t now = gethrtime();
2265                 char buf[10];
2266                 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2267                 int kb_per_sec =
2268                     1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2269                 int sec_remaining =
2270                     (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2271
2272                 zfs_nicenum(bytes, buf, sizeof (buf));
2273                 (void) fprintf(stderr,
2274                     "\r%5s completed (%4dMB/s) "
2275                     "estimated time remaining: %uhr %02umin %02usec        ",
2276                     buf, kb_per_sec / 1024,
2277                     sec_remaining / 60 / 60,
2278                     sec_remaining / 60 % 60,
2279                     sec_remaining % 60);
2280
2281                 zcb->zcb_lastprint = now;
2282         }
2283
2284         return (0);
2285 }
2286
2287 static void
2288 zdb_leak(void *arg, uint64_t start, uint64_t size)
2289 {
2290         vdev_t *vd = arg;
2291
2292         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2293             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2294 }
2295
2296 static metaslab_ops_t zdb_metaslab_ops = {
2297         NULL,   /* alloc */
2298         NULL    /* fragmented */
2299 };
2300
2301 static void
2302 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2303 {
2304         ddt_bookmark_t ddb = { 0 };
2305         ddt_entry_t dde;
2306         int error;
2307
2308         while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2309                 blkptr_t blk;
2310                 ddt_phys_t *ddp = dde.dde_phys;
2311
2312                 if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2313                         return;
2314
2315                 ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2316
2317                 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2318                         if (ddp->ddp_phys_birth == 0)
2319                                 continue;
2320                         ddt_bp_create(ddb.ddb_checksum,
2321                             &dde.dde_key, ddp, &blk);
2322                         if (p == DDT_PHYS_DITTO) {
2323                                 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2324                         } else {
2325                                 zcb->zcb_dedup_asize +=
2326                                     BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2327                                 zcb->zcb_dedup_blocks++;
2328                         }
2329                 }
2330                 if (!dump_opt['L']) {
2331                         ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2332                         ddt_enter(ddt);
2333                         VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2334                         ddt_exit(ddt);
2335                 }
2336         }
2337
2338         ASSERT(error == ENOENT);
2339 }
2340
2341 static void
2342 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2343 {
2344         zcb->zcb_spa = spa;
2345
2346         if (!dump_opt['L']) {
2347                 vdev_t *rvd = spa->spa_root_vdev;
2348                 for (int c = 0; c < rvd->vdev_children; c++) {
2349                         vdev_t *vd = rvd->vdev_child[c];
2350                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2351                                 metaslab_t *msp = vd->vdev_ms[m];
2352                                 mutex_enter(&msp->ms_lock);
2353                                 metaslab_unload(msp);
2354
2355                                 /*
2356                                  * For leak detection, we overload the metaslab
2357                                  * ms_tree to contain allocated segments
2358                                  * instead of free segments. As a result,
2359                                  * we can't use the normal metaslab_load/unload
2360                                  * interfaces.
2361                                  */
2362                                 if (msp->ms_sm != NULL) {
2363                                         msp->ms_ops = &zdb_metaslab_ops;
2364                                         VERIFY0(space_map_load(msp->ms_sm,
2365                                             msp->ms_tree, SM_ALLOC));
2366                                         msp->ms_loaded = B_TRUE;
2367                                 }
2368                                 mutex_exit(&msp->ms_lock);
2369                         }
2370                 }
2371         }
2372
2373         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2374
2375         zdb_ddt_leak_init(spa, zcb);
2376
2377         spa_config_exit(spa, SCL_CONFIG, FTAG);
2378 }
2379
2380 static void
2381 zdb_leak_fini(spa_t *spa)
2382 {
2383         if (!dump_opt['L']) {
2384                 vdev_t *rvd = spa->spa_root_vdev;
2385                 for (int c = 0; c < rvd->vdev_children; c++) {
2386                         vdev_t *vd = rvd->vdev_child[c];
2387                         for (int m = 0; m < vd->vdev_ms_count; m++) {
2388                                 metaslab_t *msp = vd->vdev_ms[m];
2389                                 mutex_enter(&msp->ms_lock);
2390
2391                                 /*
2392                                  * The ms_tree has been overloaded to
2393                                  * contain allocated segments. Now that we
2394                                  * finished traversing all blocks, any
2395                                  * block that remains in the ms_tree
2396                                  * represents an allocated block that we
2397                                  * did not claim during the traversal.
2398                                  * Claimed blocks would have been removed
2399                                  * from the ms_tree.
2400                                  */
2401                                 range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2402                                 msp->ms_loaded = B_FALSE;
2403
2404                                 mutex_exit(&msp->ms_lock);
2405                         }
2406                 }
2407         }
2408 }
2409
2410 /* ARGSUSED */
2411 static int
2412 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2413 {
2414         zdb_cb_t *zcb = arg;
2415
2416         if (dump_opt['b'] >= 5) {
2417                 char blkbuf[BP_SPRINTF_LEN];
2418                 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2419                 (void) printf("[%s] %s\n",
2420                     "deferred free", blkbuf);
2421         }
2422         zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2423         return (0);
2424 }
2425
2426 static int
2427 dump_block_stats(spa_t *spa)
2428 {
2429         zdb_cb_t zcb = { 0 };
2430         zdb_blkstats_t *zb, *tzb;
2431         uint64_t norm_alloc, norm_space, total_alloc, total_found;
2432         int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2433         int leaks = 0;
2434
2435         (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2436             (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2437             (dump_opt['c'] == 1) ? "metadata " : "",
2438             dump_opt['c'] ? "checksums " : "",
2439             (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2440             !dump_opt['L'] ? "nothing leaked " : "");
2441
2442         /*
2443          * Load all space maps as SM_ALLOC maps, then traverse the pool
2444          * claiming each block we discover.  If the pool is perfectly
2445          * consistent, the space maps will be empty when we're done.
2446          * Anything left over is a leak; any block we can't claim (because
2447          * it's not part of any space map) is a double allocation,
2448          * reference to a freed block, or an unclaimed log block.
2449          */
2450         zdb_leak_init(spa, &zcb);
2451
2452         /*
2453          * If there's a deferred-free bplist, process that first.
2454          */
2455         (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2456             count_block_cb, &zcb, NULL);
2457         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2458                 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2459                     count_block_cb, &zcb, NULL);
2460         }
2461         if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2462                 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2463                     spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2464                     &zcb, NULL));
2465         }
2466
2467         if (dump_opt['c'] > 1)
2468                 flags |= TRAVERSE_PREFETCH_DATA;
2469
2470         zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2471         zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2472         zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2473
2474         /*
2475          * If we've traversed the data blocks then we need to wait for those
2476          * I/Os to complete. We leverage "The Godfather" zio to wait on
2477          * all async I/Os to complete.
2478          */
2479         if (dump_opt['c']) {
2480                 (void) zio_wait(spa->spa_async_zio_root);
2481                 spa->spa_async_zio_root = zio_root(spa, NULL, NULL,
2482                     ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2483                     ZIO_FLAG_GODFATHER);
2484         }
2485
2486         if (zcb.zcb_haderrors) {
2487                 (void) printf("\nError counts:\n\n");
2488                 (void) printf("\t%5s  %s\n", "errno", "count");
2489                 for (int e = 0; e < 256; e++) {
2490                         if (zcb.zcb_errors[e] != 0) {
2491                                 (void) printf("\t%5d  %llu\n",
2492                                     e, (u_longlong_t)zcb.zcb_errors[e]);
2493                         }
2494                 }
2495         }
2496
2497         /*
2498          * Report any leaked segments.
2499          */
2500         zdb_leak_fini(spa);
2501
2502         tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2503
2504         norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2505         norm_space = metaslab_class_get_space(spa_normal_class(spa));
2506
2507         total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2508         total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2509
2510         if (total_found == total_alloc) {
2511                 if (!dump_opt['L'])
2512                         (void) printf("\n\tNo leaks (block sum matches space"
2513                             " maps exactly)\n");
2514         } else {
2515                 (void) printf("block traversal size %llu != alloc %llu "
2516                     "(%s %lld)\n",
2517                     (u_longlong_t)total_found,
2518                     (u_longlong_t)total_alloc,
2519                     (dump_opt['L']) ? "unreachable" : "leaked",
2520                     (longlong_t)(total_alloc - total_found));
2521                 leaks = 1;
2522         }
2523
2524         if (tzb->zb_count == 0)
2525                 return (2);
2526
2527         (void) printf("\n");
2528         (void) printf("\tbp count:      %10llu\n",
2529             (u_longlong_t)tzb->zb_count);
2530         (void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2531             (u_longlong_t)tzb->zb_lsize,
2532             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2533         (void) printf("\tbp physical:   %10llu      avg:"
2534             " %6llu     compression: %6.2f\n",
2535             (u_longlong_t)tzb->zb_psize,
2536             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2537             (double)tzb->zb_lsize / tzb->zb_psize);
2538         (void) printf("\tbp allocated:  %10llu      avg:"
2539             " %6llu     compression: %6.2f\n",
2540             (u_longlong_t)tzb->zb_asize,
2541             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2542             (double)tzb->zb_lsize / tzb->zb_asize);
2543         (void) printf("\tbp deduped:    %10llu    ref>1:"
2544             " %6llu   deduplication: %6.2f\n",
2545             (u_longlong_t)zcb.zcb_dedup_asize,
2546             (u_longlong_t)zcb.zcb_dedup_blocks,
2547             (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2548         (void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2549             (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2550
2551         if (dump_opt['b'] >= 2) {
2552                 int l, t, level;
2553                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2554                     "\t  avg\t comp\t%%Total\tType\n");
2555
2556                 for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2557                         char csize[32], lsize[32], psize[32], asize[32];
2558                         char avg[32];
2559                         char *typename;
2560
2561                         if (t < DMU_OT_NUMTYPES)
2562                                 typename = dmu_ot[t].ot_name;
2563                         else
2564                                 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2565
2566                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2567                                 (void) printf("%6s\t%5s\t%5s\t%5s"
2568                                     "\t%5s\t%5s\t%6s\t%s\n",
2569                                     "-",
2570                                     "-",
2571                                     "-",
2572                                     "-",
2573                                     "-",
2574                                     "-",
2575                                     "-",
2576                                     typename);
2577                                 continue;
2578                         }
2579
2580                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
2581                                 level = (l == -1 ? ZB_TOTAL : l);
2582                                 zb = &zcb.zcb_type[level][t];
2583
2584                                 if (zb->zb_asize == 0)
2585                                         continue;
2586
2587                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2588                                         continue;
2589
2590                                 if (level == 0 && zb->zb_asize ==
2591                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2592                                         continue;
2593
2594                                 zdb_nicenum(zb->zb_count, csize);
2595                                 zdb_nicenum(zb->zb_lsize, lsize);
2596                                 zdb_nicenum(zb->zb_psize, psize);
2597                                 zdb_nicenum(zb->zb_asize, asize);
2598                                 zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2599
2600                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2601                                     "\t%5.2f\t%6.2f\t",
2602                                     csize, lsize, psize, asize, avg,
2603                                     (double)zb->zb_lsize / zb->zb_psize,
2604                                     100.0 * zb->zb_asize / tzb->zb_asize);
2605
2606                                 if (level == ZB_TOTAL)
2607                                         (void) printf("%s\n", typename);
2608                                 else
2609                                         (void) printf("    L%d %s\n",
2610                                             level, typename);
2611
2612                                 if (dump_opt['b'] >= 4) {
2613                                         (void) printf("psize "
2614                                             "(in 512-byte sectors): "
2615                                             "number of blocks\n");
2616                                         dump_histogram(zb->zb_psize_histogram,
2617                                             PSIZE_HISTO_SIZE, 0);
2618                                 }
2619                         }
2620                 }
2621         }
2622
2623         (void) printf("\n");
2624
2625         if (leaks)
2626                 return (2);
2627
2628         if (zcb.zcb_haderrors)
2629                 return (3);
2630
2631         return (0);
2632 }
2633
2634 typedef struct zdb_ddt_entry {
2635         ddt_key_t       zdde_key;
2636         uint64_t        zdde_ref_blocks;
2637         uint64_t        zdde_ref_lsize;
2638         uint64_t        zdde_ref_psize;
2639         uint64_t        zdde_ref_dsize;
2640         avl_node_t      zdde_node;
2641 } zdb_ddt_entry_t;
2642
2643 /* ARGSUSED */
2644 static int
2645 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2646     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2647 {
2648         avl_tree_t *t = arg;
2649         avl_index_t where;
2650         zdb_ddt_entry_t *zdde, zdde_search;
2651
2652         if (BP_IS_HOLE(bp))
2653                 return (0);
2654
2655         if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2656                 (void) printf("traversing objset %llu, %llu objects, "
2657                     "%lu blocks so far\n",
2658                     (u_longlong_t)zb->zb_objset,
2659                     (u_longlong_t)bp->blk_fill,
2660                     avl_numnodes(t));
2661         }
2662
2663         if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2664             BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2665                 return (0);
2666
2667         ddt_key_fill(&zdde_search.zdde_key, bp);
2668
2669         zdde = avl_find(t, &zdde_search, &where);
2670
2671         if (zdde == NULL) {
2672                 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2673                 zdde->zdde_key = zdde_search.zdde_key;
2674                 avl_insert(t, zdde, where);
2675         }
2676
2677         zdde->zdde_ref_blocks += 1;
2678         zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2679         zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2680         zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2681
2682         return (0);
2683 }
2684
2685 static void
2686 dump_simulated_ddt(spa_t *spa)
2687 {
2688         avl_tree_t t;
2689         void *cookie = NULL;
2690         zdb_ddt_entry_t *zdde;
2691         ddt_histogram_t ddh_total = { 0 };
2692         ddt_stat_t dds_total = { 0 };
2693
2694         avl_create(&t, ddt_entry_compare,
2695             sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2696
2697         spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2698
2699         (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2700             zdb_ddt_add_cb, &t);
2701
2702         spa_config_exit(spa, SCL_CONFIG, FTAG);
2703
2704         while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2705                 ddt_stat_t dds;
2706                 uint64_t refcnt = zdde->zdde_ref_blocks;
2707                 ASSERT(refcnt != 0);
2708
2709                 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2710                 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2711                 dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2712                 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2713
2714                 dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2715                 dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2716                 dds.dds_ref_psize = zdde->zdde_ref_psize;
2717                 dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2718
2719                 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2720
2721                 umem_free(zdde, sizeof (*zdde));
2722         }
2723
2724         avl_destroy(&t);
2725
2726         ddt_histogram_stat(&dds_total, &ddh_total);
2727
2728         (void) printf("Simulated DDT histogram:\n");
2729
2730         zpool_dump_ddt(&dds_total, &ddh_total);
2731
2732         dump_dedup_ratio(&dds_total);
2733 }
2734
2735 static void
2736 dump_zpool(spa_t *spa)
2737 {
2738         dsl_pool_t *dp = spa_get_dsl(spa);
2739         int rc = 0;
2740
2741         if (dump_opt['S']) {
2742                 dump_simulated_ddt(spa);
2743                 return;
2744         }
2745
2746         if (!dump_opt['e'] && dump_opt['C'] > 1) {
2747                 (void) printf("\nCached configuration:\n");
2748                 dump_nvlist(spa->spa_config, 8);
2749         }
2750
2751         if (dump_opt['C'])
2752                 dump_config(spa);
2753
2754         if (dump_opt['u'])
2755                 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2756
2757         if (dump_opt['D'])
2758                 dump_all_ddts(spa);
2759
2760         if (dump_opt['d'] > 2 || dump_opt['m'])
2761                 dump_metaslabs(spa);
2762
2763         if (dump_opt['d'] || dump_opt['i']) {
2764                 dump_dir(dp->dp_meta_objset);
2765                 if (dump_opt['d'] >= 3) {
2766                         dump_bpobj(&spa->spa_deferred_bpobj,
2767                             "Deferred frees", 0);
2768                         if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2769                                 dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2770                                     "Pool snapshot frees", 0);
2771                         }
2772
2773                         if (spa_feature_is_active(spa,
2774                             SPA_FEATURE_ASYNC_DESTROY)) {
2775                                 dump_bptree(spa->spa_meta_objset,
2776                                     spa->spa_dsl_pool->dp_bptree_obj,
2777                                     "Pool dataset frees");
2778                         }
2779                         dump_dtl(spa->spa_root_vdev, 0);
2780                 }
2781                 (void) dmu_objset_find(spa_name(spa), dump_one_dir,
2782                     NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2783         }
2784         if (dump_opt['b'] || dump_opt['c'])
2785                 rc = dump_block_stats(spa);
2786
2787         if (rc == 0)
2788                 rc = verify_spacemap_refcounts(spa);
2789
2790         if (dump_opt['s'])
2791                 show_pool_stats(spa);
2792
2793         if (dump_opt['h'])
2794                 dump_history(spa);
2795
2796         if (rc != 0)
2797                 exit(rc);
2798 }
2799
2800 #define ZDB_FLAG_CHECKSUM       0x0001
2801 #define ZDB_FLAG_DECOMPRESS     0x0002
2802 #define ZDB_FLAG_BSWAP          0x0004
2803 #define ZDB_FLAG_GBH            0x0008
2804 #define ZDB_FLAG_INDIRECT       0x0010
2805 #define ZDB_FLAG_PHYS           0x0020
2806 #define ZDB_FLAG_RAW            0x0040
2807 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
2808
2809 int flagbits[256];
2810
2811 static void
2812 zdb_print_blkptr(blkptr_t *bp, int flags)
2813 {
2814         char blkbuf[BP_SPRINTF_LEN];
2815
2816         if (flags & ZDB_FLAG_BSWAP)
2817                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2818
2819         snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
2820         (void) printf("%s\n", blkbuf);
2821 }
2822
2823 static void
2824 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2825 {
2826         int i;
2827
2828         for (i = 0; i < nbps; i++)
2829                 zdb_print_blkptr(&bp[i], flags);
2830 }
2831
2832 static void
2833 zdb_dump_gbh(void *buf, int flags)
2834 {
2835         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2836 }
2837
2838 static void
2839 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2840 {
2841         if (flags & ZDB_FLAG_BSWAP)
2842                 byteswap_uint64_array(buf, size);
2843         (void) write(1, buf, size);
2844 }
2845
2846 static void
2847 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2848 {
2849         uint64_t *d = (uint64_t *)buf;
2850         int nwords = size / sizeof (uint64_t);
2851         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2852         int i, j;
2853         char *hdr, *c;
2854
2855
2856         if (do_bswap)
2857                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2858         else
2859                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2860
2861         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2862
2863         for (i = 0; i < nwords; i += 2) {
2864                 (void) printf("%06llx:  %016llx  %016llx  ",
2865                     (u_longlong_t)(i * sizeof (uint64_t)),
2866                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2867                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2868
2869                 c = (char *)&d[i];
2870                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
2871                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
2872                 (void) printf("\n");
2873         }
2874 }
2875
2876 /*
2877  * There are two acceptable formats:
2878  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
2879  *      child[.child]*    - For example: 0.1.1
2880  *
2881  * The second form can be used to specify arbitrary vdevs anywhere
2882  * in the heirarchy.  For example, in a pool with a mirror of
2883  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2884  */
2885 static vdev_t *
2886 zdb_vdev_lookup(vdev_t *vdev, char *path)
2887 {
2888         char *s, *p, *q;
2889         int i;
2890
2891         if (vdev == NULL)
2892                 return (NULL);
2893
2894         /* First, assume the x.x.x.x format */
2895         i = (int)strtoul(path, &s, 10);
2896         if (s == path || (s && *s != '.' && *s != '\0'))
2897                 goto name;
2898         if (i < 0 || i >= vdev->vdev_children)
2899                 return (NULL);
2900
2901         vdev = vdev->vdev_child[i];
2902         if (*s == '\0')
2903                 return (vdev);
2904         return (zdb_vdev_lookup(vdev, s+1));
2905
2906 name:
2907         for (i = 0; i < vdev->vdev_children; i++) {
2908                 vdev_t *vc = vdev->vdev_child[i];
2909
2910                 if (vc->vdev_path == NULL) {
2911                         vc = zdb_vdev_lookup(vc, path);
2912                         if (vc == NULL)
2913                                 continue;
2914                         else
2915                                 return (vc);
2916                 }
2917
2918                 p = strrchr(vc->vdev_path, '/');
2919                 p = p ? p + 1 : vc->vdev_path;
2920                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2921
2922                 if (strcmp(vc->vdev_path, path) == 0)
2923                         return (vc);
2924                 if (strcmp(p, path) == 0)
2925                         return (vc);
2926                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2927                         return (vc);
2928         }
2929
2930         return (NULL);
2931 }
2932
2933 /*
2934  * Read a block from a pool and print it out.  The syntax of the
2935  * block descriptor is:
2936  *
2937  *      pool:vdev_specifier:offset:size[:flags]
2938  *
2939  *      pool           - The name of the pool you wish to read from
2940  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2941  *      offset         - offset, in hex, in bytes
2942  *      size           - Amount of data to read, in hex, in bytes
2943  *      flags          - A string of characters specifying options
2944  *               b: Decode a blkptr at given offset within block
2945  *              *c: Calculate and display checksums
2946  *               d: Decompress data before dumping
2947  *               e: Byteswap data before dumping
2948  *               g: Display data as a gang block header
2949  *               i: Display as an indirect block
2950  *               p: Do I/O to physical offset
2951  *               r: Dump raw data to stdout
2952  *
2953  *              * = not yet implemented
2954  */
2955 static void
2956 zdb_read_block(char *thing, spa_t *spa)
2957 {
2958         blkptr_t blk, *bp = &blk;
2959         dva_t *dva = bp->blk_dva;
2960         int flags = 0;
2961         uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2962         zio_t *zio;
2963         vdev_t *vd;
2964         void *pbuf, *lbuf, *buf;
2965         char *s, *p, *dup, *vdev, *flagstr;
2966         int i, error;
2967
2968         dup = strdup(thing);
2969         s = strtok(dup, ":");
2970         vdev = s ? s : "";
2971         s = strtok(NULL, ":");
2972         offset = strtoull(s ? s : "", NULL, 16);
2973         s = strtok(NULL, ":");
2974         size = strtoull(s ? s : "", NULL, 16);
2975         s = strtok(NULL, ":");
2976         flagstr = s ? s : "";
2977
2978         s = NULL;
2979         if (size == 0)
2980                 s = "size must not be zero";
2981         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2982                 s = "size must be a multiple of sector size";
2983         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2984                 s = "offset must be a multiple of sector size";
2985         if (s) {
2986                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2987                 free(dup);
2988                 return;
2989         }
2990
2991         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2992                 for (i = 0; flagstr[i]; i++) {
2993                         int bit = flagbits[(uchar_t)flagstr[i]];
2994
2995                         if (bit == 0) {
2996                                 (void) printf("***Invalid flag: %c\n",
2997                                     flagstr[i]);
2998                                 continue;
2999                         }
3000                         flags |= bit;
3001
3002                         /* If it's not something with an argument, keep going */
3003                         if ((bit & (ZDB_FLAG_CHECKSUM |
3004                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
3005                                 continue;
3006
3007                         p = &flagstr[i + 1];
3008                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
3009                                 blkptr_offset = strtoull(p, &p, 16);
3010                         if (*p != ':' && *p != '\0') {
3011                                 (void) printf("***Invalid flag arg: '%s'\n", s);
3012                                 free(dup);
3013                                 return;
3014                         }
3015                         i += p - &flagstr[i + 1]; /* skip over the number */
3016                 }
3017         }
3018
3019         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3020         if (vd == NULL) {
3021                 (void) printf("***Invalid vdev: %s\n", vdev);
3022                 free(dup);
3023                 return;
3024         } else {
3025                 if (vd->vdev_path)
3026                         (void) fprintf(stderr, "Found vdev: %s\n",
3027                             vd->vdev_path);
3028                 else
3029                         (void) fprintf(stderr, "Found vdev type: %s\n",
3030                             vd->vdev_ops->vdev_op_type);
3031         }
3032
3033         psize = size;
3034         lsize = size;
3035
3036         pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3037         lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3038
3039         BP_ZERO(bp);
3040
3041         DVA_SET_VDEV(&dva[0], vd->vdev_id);
3042         DVA_SET_OFFSET(&dva[0], offset);
3043         DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3044         DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3045
3046         BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3047
3048         BP_SET_LSIZE(bp, lsize);
3049         BP_SET_PSIZE(bp, psize);
3050         BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3051         BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3052         BP_SET_TYPE(bp, DMU_OT_NONE);
3053         BP_SET_LEVEL(bp, 0);
3054         BP_SET_DEDUP(bp, 0);
3055         BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3056
3057         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3058         zio = zio_root(spa, NULL, NULL, 0);
3059
3060         if (vd == vd->vdev_top) {
3061                 /*
3062                  * Treat this as a normal block read.
3063                  */
3064                 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3065                     ZIO_PRIORITY_SYNC_READ,
3066                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3067         } else {
3068                 /*
3069                  * Treat this as a vdev child I/O.
3070                  */
3071                 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3072                     ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3073                     ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3074                     ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3075                     ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3076         }
3077
3078         error = zio_wait(zio);
3079         spa_config_exit(spa, SCL_STATE, FTAG);
3080
3081         if (error) {
3082                 (void) printf("Read of %s failed, error: %d\n", thing, error);
3083                 goto out;
3084         }
3085
3086         if (flags & ZDB_FLAG_DECOMPRESS) {
3087                 /*
3088                  * We don't know how the data was compressed, so just try
3089                  * every decompress function at every inflated blocksize.
3090                  */
3091                 enum zio_compress c;
3092                 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3093                 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3094
3095                 bcopy(pbuf, pbuf2, psize);
3096
3097                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3098                     SPA_MAXBLOCKSIZE - psize) == 0);
3099
3100                 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3101                     SPA_MAXBLOCKSIZE - psize) == 0);
3102
3103                 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3104                     lsize -= SPA_MINBLOCKSIZE) {
3105                         for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3106                                 if (zio_decompress_data(c, pbuf, lbuf,
3107                                     psize, lsize) == 0 &&
3108                                     zio_decompress_data(c, pbuf2, lbuf2,
3109                                     psize, lsize) == 0 &&
3110                                     bcmp(lbuf, lbuf2, lsize) == 0)
3111                                         break;
3112                         }
3113                         if (c != ZIO_COMPRESS_FUNCTIONS)
3114                                 break;
3115                         lsize -= SPA_MINBLOCKSIZE;
3116                 }
3117
3118                 umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3119                 umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3120
3121                 if (lsize <= psize) {
3122                         (void) printf("Decompress of %s failed\n", thing);
3123                         goto out;
3124                 }
3125                 buf = lbuf;
3126                 size = lsize;
3127         } else {
3128                 buf = pbuf;
3129                 size = psize;
3130         }
3131
3132         if (flags & ZDB_FLAG_PRINT_BLKPTR)
3133                 zdb_print_blkptr((blkptr_t *)(void *)
3134                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3135         else if (flags & ZDB_FLAG_RAW)
3136                 zdb_dump_block_raw(buf, size, flags);
3137         else if (flags & ZDB_FLAG_INDIRECT)
3138                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3139                     flags);
3140         else if (flags & ZDB_FLAG_GBH)
3141                 zdb_dump_gbh(buf, flags);
3142         else
3143                 zdb_dump_block(thing, buf, size, flags);
3144
3145 out:
3146         umem_free(pbuf, SPA_MAXBLOCKSIZE);
3147         umem_free(lbuf, SPA_MAXBLOCKSIZE);
3148         free(dup);
3149 }
3150
3151 static boolean_t
3152 pool_match(nvlist_t *cfg, char *tgt)
3153 {
3154         uint64_t v, guid = strtoull(tgt, NULL, 0);
3155         char *s;
3156
3157         if (guid != 0) {
3158                 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3159                         return (v == guid);
3160         } else {
3161                 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3162                         return (strcmp(s, tgt) == 0);
3163         }
3164         return (B_FALSE);
3165 }
3166
3167 static char *
3168 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3169 {
3170         nvlist_t *pools;
3171         nvlist_t *match = NULL;
3172         char *name = NULL;
3173         char *sepp = NULL;
3174         char sep;
3175         int count = 0;
3176         importargs_t args = { 0 };
3177
3178         args.paths = dirc;
3179         args.path = dirv;
3180         args.can_be_active = B_TRUE;
3181
3182         if ((sepp = strpbrk(*target, "/@")) != NULL) {
3183                 sep = *sepp;
3184                 *sepp = '\0';
3185         }
3186
3187         pools = zpool_search_import(g_zfs, &args);
3188
3189         if (pools != NULL) {
3190                 nvpair_t *elem = NULL;
3191                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3192                         verify(nvpair_value_nvlist(elem, configp) == 0);
3193                         if (pool_match(*configp, *target)) {
3194                                 count++;
3195                                 if (match != NULL) {
3196                                         /* print previously found config */
3197                                         if (name != NULL) {
3198                                                 (void) printf("%s\n", name);
3199                                                 dump_nvlist(match, 8);
3200                                                 name = NULL;
3201                                         }
3202                                         (void) printf("%s\n",
3203                                             nvpair_name(elem));
3204                                         dump_nvlist(*configp, 8);
3205                                 } else {
3206                                         match = *configp;
3207                                         name = nvpair_name(elem);
3208                                 }
3209                         }
3210                 }
3211         }
3212         if (count > 1)
3213                 (void) fatal("\tMatched %d pools - use pool GUID "
3214                     "instead of pool name or \n"
3215                     "\tpool name part of a dataset name to select pool", count);
3216
3217         if (sepp)
3218                 *sepp = sep;
3219         /*
3220          * If pool GUID was specified for pool id, replace it with pool name
3221          */
3222         if (name && (strstr(*target, name) != *target)) {
3223                 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3224
3225                 *target = umem_alloc(sz, UMEM_NOFAIL);
3226                 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3227         }
3228
3229         *configp = name ? match : NULL;
3230
3231         return (name);
3232 }
3233
3234 int
3235 main(int argc, char **argv)
3236 {
3237         int i, c;
3238         struct rlimit rl = { 1024, 1024 };
3239         spa_t *spa = NULL;
3240         objset_t *os = NULL;
3241         int dump_all = 1;
3242         int verbose = 0;
3243         int error = 0;
3244         char **searchdirs = NULL;
3245         int nsearch = 0;
3246         char *target;
3247         nvlist_t *policy = NULL;
3248         uint64_t max_txg = UINT64_MAX;
3249         int rewind = ZPOOL_NEVER_REWIND;
3250
3251         (void) setrlimit(RLIMIT_NOFILE, &rl);
3252         (void) enable_extended_FILE_stdio(-1, -1);
3253
3254         dprintf_setup(&argc, argv);
3255
3256         while ((c = getopt(argc, argv, "bcdhilmM:suCDRSAFLXevp:t:U:P")) != -1) {
3257                 switch (c) {
3258                 case 'b':
3259                 case 'c':
3260                 case 'd':
3261                 case 'h':
3262                 case 'i':
3263                 case 'l':
3264                 case 'm':
3265                 case 's':
3266                 case 'u':
3267                 case 'C':
3268                 case 'D':
3269                 case 'R':
3270                 case 'S':
3271                         dump_opt[c]++;
3272                         dump_all = 0;
3273                         break;
3274                 case 'A':
3275                 case 'F':
3276                 case 'L':
3277                 case 'X':
3278                 case 'e':
3279                 case 'P':
3280                         dump_opt[c]++;
3281                         break;
3282                 case 'v':
3283                         verbose++;
3284                         break;
3285                 case 'M':
3286                         max_inflight = strtoull(optarg, NULL, 0);
3287                         if (max_inflight == 0) {
3288                                 (void) fprintf(stderr, "maximum number "
3289                                     "of inflight I/Os must be greater "
3290                                     "than 0\n");
3291                                 usage();
3292                         }
3293                         break;
3294                 case 'p':
3295                         if (searchdirs == NULL) {
3296                                 searchdirs = umem_alloc(sizeof (char *),
3297                                     UMEM_NOFAIL);
3298                         } else {
3299                                 char **tmp = umem_alloc((nsearch + 1) *
3300                                     sizeof (char *), UMEM_NOFAIL);
3301                                 bcopy(searchdirs, tmp, nsearch *
3302                                     sizeof (char *));
3303                                 umem_free(searchdirs,
3304                                     nsearch * sizeof (char *));
3305                                 searchdirs = tmp;
3306                         }
3307                         searchdirs[nsearch++] = optarg;
3308                         break;
3309                 case 't':
3310                         max_txg = strtoull(optarg, NULL, 0);
3311                         if (max_txg < TXG_INITIAL) {
3312                                 (void) fprintf(stderr, "incorrect txg "
3313                                     "specified: %s\n", optarg);
3314                                 usage();
3315                         }
3316                         break;
3317                 case 'U':
3318                         spa_config_path = optarg;
3319                         break;
3320                 default:
3321                         usage();
3322                         break;
3323                 }
3324         }
3325
3326         if (!dump_opt['e'] && searchdirs != NULL) {
3327                 (void) fprintf(stderr, "-p option requires use of -e\n");
3328                 usage();
3329         }
3330
3331         kernel_init(FREAD);
3332         g_zfs = libzfs_init();
3333         ASSERT(g_zfs != NULL);
3334
3335         if (dump_all)
3336                 verbose = MAX(verbose, 1);
3337
3338         for (c = 0; c < 256; c++) {
3339                 if (dump_all && !strchr("elAFLRSXP", c))
3340                         dump_opt[c] = 1;
3341                 if (dump_opt[c])
3342                         dump_opt[c] += verbose;
3343         }
3344
3345         aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3346         zfs_recover = (dump_opt['A'] > 1);
3347
3348         argc -= optind;
3349         argv += optind;
3350
3351         if (argc < 2 && dump_opt['R'])
3352                 usage();
3353         if (argc < 1) {
3354                 if (!dump_opt['e'] && dump_opt['C']) {
3355                         dump_cachefile(spa_config_path);
3356                         return (0);
3357                 }
3358                 usage();
3359         }
3360
3361         if (dump_opt['l']) {
3362                 dump_label(argv[0]);
3363                 return (0);
3364         }
3365
3366         if (dump_opt['X'] || dump_opt['F'])
3367                 rewind = ZPOOL_DO_REWIND |
3368                     (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3369
3370         if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3371             nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3372             nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3373                 fatal("internal error: %s", strerror(ENOMEM));
3374
3375         error = 0;
3376         target = argv[0];
3377
3378         if (dump_opt['e']) {
3379                 nvlist_t *cfg = NULL;
3380                 char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3381
3382                 error = ENOENT;
3383                 if (name) {
3384                         if (dump_opt['C'] > 1) {
3385                                 (void) printf("\nConfiguration for import:\n");
3386                                 dump_nvlist(cfg, 8);
3387                         }
3388                         if (nvlist_add_nvlist(cfg,
3389                             ZPOOL_REWIND_POLICY, policy) != 0) {
3390                                 fatal("can't open '%s': %s",
3391                                     target, strerror(ENOMEM));
3392                         }
3393                         if ((error = spa_import(name, cfg, NULL,
3394                             ZFS_IMPORT_MISSING_LOG)) != 0) {
3395                                 error = spa_import(name, cfg, NULL,
3396                                     ZFS_IMPORT_VERBATIM);
3397                         }
3398                 }
3399         }
3400
3401         if (error == 0) {
3402                 if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3403                         error = spa_open_rewind(target, &spa, FTAG, policy,
3404                             NULL);
3405                         if (error) {
3406                                 /*
3407                                  * If we're missing the log device then
3408                                  * try opening the pool after clearing the
3409                                  * log state.
3410                                  */
3411                                 mutex_enter(&spa_namespace_lock);
3412                                 if ((spa = spa_lookup(target)) != NULL &&
3413                                     spa->spa_log_state == SPA_LOG_MISSING) {
3414                                         spa->spa_log_state = SPA_LOG_CLEAR;
3415                                         error = 0;
3416                                 }
3417                                 mutex_exit(&spa_namespace_lock);
3418
3419                                 if (!error) {
3420                                         error = spa_open_rewind(target, &spa,
3421                                             FTAG, policy, NULL);
3422                                 }
3423                         }
3424                 } else {
3425                         error = dmu_objset_own(target, DMU_OST_ANY,
3426                             B_TRUE, FTAG, &os);
3427                 }
3428         }
3429         nvlist_free(policy);
3430
3431         if (error)
3432                 fatal("can't open '%s': %s", target, strerror(error));
3433
3434         argv++;
3435         argc--;
3436         if (!dump_opt['R']) {
3437                 if (argc > 0) {
3438                         zopt_objects = argc;
3439                         zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3440                         for (i = 0; i < zopt_objects; i++) {
3441                                 errno = 0;
3442                                 zopt_object[i] = strtoull(argv[i], NULL, 0);
3443                                 if (zopt_object[i] == 0 && errno != 0)
3444                                         fatal("bad number %s: %s",
3445                                             argv[i], strerror(errno));
3446                         }
3447                 }
3448                 if (os != NULL) {
3449                         dump_dir(os);
3450                 } else if (zopt_objects > 0 && !dump_opt['m']) {
3451                         dump_dir(spa->spa_meta_objset);
3452                 } else {
3453                         dump_zpool(spa);
3454                 }
3455         } else {
3456                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3457                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
3458                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3459                 flagbits['e'] = ZDB_FLAG_BSWAP;
3460                 flagbits['g'] = ZDB_FLAG_GBH;
3461                 flagbits['i'] = ZDB_FLAG_INDIRECT;
3462                 flagbits['p'] = ZDB_FLAG_PHYS;
3463                 flagbits['r'] = ZDB_FLAG_RAW;
3464
3465                 for (i = 0; i < argc; i++)
3466                         zdb_read_block(argv[i], spa);
3467         }
3468
3469         (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3470
3471         fuid_table_destroy();
3472         sa_loaded = B_FALSE;
3473
3474         libzfs_fini(g_zfs);
3475         kernel_fini();
3476
3477         return (0);
3478 }