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