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