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 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <stdio.h> 27 #include <stdio_ext.h> 28 #include <stdlib.h> 29 #include <ctype.h> 30 #include <sys/zfs_context.h> 31 #include <sys/spa.h> 32 #include <sys/spa_impl.h> 33 #include <sys/dmu.h> 34 #include <sys/zap.h> 35 #include <sys/fs/zfs.h> 36 #include <sys/zfs_znode.h> 37 #include <sys/vdev.h> 38 #include <sys/vdev_impl.h> 39 #include <sys/metaslab_impl.h> 40 #include <sys/dmu_objset.h> 41 #include <sys/dsl_dir.h> 42 #include <sys/dsl_dataset.h> 43 #include <sys/dsl_pool.h> 44 #include <sys/dbuf.h> 45 #include <sys/zil.h> 46 #include <sys/zil_impl.h> 47 #include <sys/stat.h> 48 #include <sys/resource.h> 49 #include <sys/dmu_traverse.h> 50 #include <sys/zio_checksum.h> 51 #include <sys/zio_compress.h> 52 #include <sys/zfs_fuid.h> 53 #include <sys/arc.h> 54 #include <sys/ddt.h> 55 #undef ZFS_MAXNAMELEN 56 #undef verify 57 #include <libzfs.h> 58 59 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \ 60 zio_compress_table[(idx)].ci_name : "UNKNOWN") 61 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \ 62 zio_checksum_table[(idx)].ci_name : "UNKNOWN") 63 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \ 64 dmu_ot[(idx)].ot_name : "UNKNOWN") 65 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : DMU_OT_NUMTYPES) 66 67 #ifndef lint 68 extern int zfs_recover; 69 #else 70 int zfs_recover; 71 #endif 72 73 const char cmdname[] = "zdb"; 74 uint8_t dump_opt[256]; 75 76 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); 77 78 extern void dump_intent_log(zilog_t *); 79 uint64_t *zopt_object = NULL; 80 int zopt_objects = 0; 81 libzfs_handle_t *g_zfs; 82 83 /* 84 * These libumem hooks provide a reasonable set of defaults for the allocator's 85 * debugging facilities. 86 */ 87 const char * 88 _umem_debug_init() 89 { 90 return ("default,verbose"); /* $UMEM_DEBUG setting */ 91 } 92 93 const char * 94 _umem_logging_init(void) 95 { 96 return ("fail,contents"); /* $UMEM_LOGGING setting */ 97 } 98 99 static void 100 usage(void) 101 { 102 (void) fprintf(stderr, 103 "Usage: %s [-CumdibcsvhL] poolname [object...]\n" 104 " %s [-div] dataset [object...]\n" 105 " %s -m [-L] poolname [vdev [metaslab...]]\n" 106 " %s -R poolname vdev:offset:size[:flags]\n" 107 " %s -S poolname\n" 108 " %s -l [-u] device\n" 109 " %s -C\n\n", 110 cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname); 111 112 (void) fprintf(stderr, " Dataset name must include at least one " 113 "separator character '/' or '@'\n"); 114 (void) fprintf(stderr, " If dataset name is specified, only that " 115 "dataset is dumped\n"); 116 (void) fprintf(stderr, " If object numbers are specified, only " 117 "those objects are dumped\n\n"); 118 (void) fprintf(stderr, " Options to control amount of output:\n"); 119 (void) fprintf(stderr, " -u uberblock\n"); 120 (void) fprintf(stderr, " -d dataset(s)\n"); 121 (void) fprintf(stderr, " -i intent logs\n"); 122 (void) fprintf(stderr, " -C config (or cachefile if alone)\n"); 123 (void) fprintf(stderr, " -h pool history\n"); 124 (void) fprintf(stderr, " -b block statistics\n"); 125 (void) fprintf(stderr, " -m metaslabs\n"); 126 (void) fprintf(stderr, " -c checksum all metadata (twice for " 127 "all data) blocks\n"); 128 (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); 129 (void) fprintf(stderr, " -S simulate dedup to measure effect\n"); 130 (void) fprintf(stderr, " -v verbose (applies to all others)\n"); 131 (void) fprintf(stderr, " -l dump label contents\n"); 132 (void) fprintf(stderr, " -L disable leak tracking (do not " 133 "load spacemaps)\n"); 134 (void) fprintf(stderr, " -R read and display block from a " 135 "device\n\n"); 136 (void) fprintf(stderr, " Below options are intended for use " 137 "with other options (except -l):\n"); 138 (void) fprintf(stderr, " -A ignore assertions (-A), enable " 139 "panic recovery (-AA) or both (-AAA)\n"); 140 (void) fprintf(stderr, " -F attempt automatic rewind within " 141 "safe range of transaction groups\n"); 142 (void) fprintf(stderr, " -U <cachefile_path> -- use alternate " 143 "cachefile\n"); 144 (void) fprintf(stderr, " -X attempt extreme rewind (does not " 145 "work with dataset)\n"); 146 (void) fprintf(stderr, " -e pool is exported/destroyed/" 147 "has altroot/not in a cachefile\n"); 148 (void) fprintf(stderr, " -p <path> -- use one or more with " 149 "-e to specify path to vdev dir\n"); 150 (void) fprintf(stderr, " -t <txg> -- highest txg to use when " 151 "searching for uberblocks\n"); 152 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " 153 "to make only that option verbose\n"); 154 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); 155 exit(1); 156 } 157 158 /* 159 * Called for usage errors that are discovered after a call to spa_open(), 160 * dmu_bonus_hold(), or pool_match(). abort() is called for other errors. 161 */ 162 163 static void 164 fatal(const char *fmt, ...) 165 { 166 va_list ap; 167 168 va_start(ap, fmt); 169 (void) fprintf(stderr, "%s: ", cmdname); 170 (void) vfprintf(stderr, fmt, ap); 171 va_end(ap); 172 (void) fprintf(stderr, "\n"); 173 174 exit(1); 175 } 176 177 /* ARGSUSED */ 178 static void 179 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) 180 { 181 nvlist_t *nv; 182 size_t nvsize = *(uint64_t *)data; 183 char *packed = umem_alloc(nvsize, UMEM_NOFAIL); 184 185 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH)); 186 187 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); 188 189 umem_free(packed, nvsize); 190 191 dump_nvlist(nv, 8); 192 193 nvlist_free(nv); 194 } 195 196 const char dump_zap_stars[] = "****************************************"; 197 const int dump_zap_width = sizeof (dump_zap_stars) - 1; 198 199 static void 200 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE]) 201 { 202 int i; 203 int minidx = ZAP_HISTOGRAM_SIZE - 1; 204 int maxidx = 0; 205 uint64_t max = 0; 206 207 for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) { 208 if (histo[i] > max) 209 max = histo[i]; 210 if (histo[i] > 0 && i > maxidx) 211 maxidx = i; 212 if (histo[i] > 0 && i < minidx) 213 minidx = i; 214 } 215 216 if (max < dump_zap_width) 217 max = dump_zap_width; 218 219 for (i = minidx; i <= maxidx; i++) 220 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i], 221 &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]); 222 } 223 224 static void 225 dump_zap_stats(objset_t *os, uint64_t object) 226 { 227 int error; 228 zap_stats_t zs; 229 230 error = zap_get_stats(os, object, &zs); 231 if (error) 232 return; 233 234 if (zs.zs_ptrtbl_len == 0) { 235 ASSERT(zs.zs_num_blocks == 1); 236 (void) printf("\tmicrozap: %llu bytes, %llu entries\n", 237 (u_longlong_t)zs.zs_blocksize, 238 (u_longlong_t)zs.zs_num_entries); 239 return; 240 } 241 242 (void) printf("\tFat ZAP stats:\n"); 243 244 (void) printf("\t\tPointer table:\n"); 245 (void) printf("\t\t\t%llu elements\n", 246 (u_longlong_t)zs.zs_ptrtbl_len); 247 (void) printf("\t\t\tzt_blk: %llu\n", 248 (u_longlong_t)zs.zs_ptrtbl_zt_blk); 249 (void) printf("\t\t\tzt_numblks: %llu\n", 250 (u_longlong_t)zs.zs_ptrtbl_zt_numblks); 251 (void) printf("\t\t\tzt_shift: %llu\n", 252 (u_longlong_t)zs.zs_ptrtbl_zt_shift); 253 (void) printf("\t\t\tzt_blks_copied: %llu\n", 254 (u_longlong_t)zs.zs_ptrtbl_blks_copied); 255 (void) printf("\t\t\tzt_nextblk: %llu\n", 256 (u_longlong_t)zs.zs_ptrtbl_nextblk); 257 258 (void) printf("\t\tZAP entries: %llu\n", 259 (u_longlong_t)zs.zs_num_entries); 260 (void) printf("\t\tLeaf blocks: %llu\n", 261 (u_longlong_t)zs.zs_num_leafs); 262 (void) printf("\t\tTotal blocks: %llu\n", 263 (u_longlong_t)zs.zs_num_blocks); 264 (void) printf("\t\tzap_block_type: 0x%llx\n", 265 (u_longlong_t)zs.zs_block_type); 266 (void) printf("\t\tzap_magic: 0x%llx\n", 267 (u_longlong_t)zs.zs_magic); 268 (void) printf("\t\tzap_salt: 0x%llx\n", 269 (u_longlong_t)zs.zs_salt); 270 271 (void) printf("\t\tLeafs with 2^n pointers:\n"); 272 dump_zap_histogram(zs.zs_leafs_with_2n_pointers); 273 274 (void) printf("\t\tBlocks with n*5 entries:\n"); 275 dump_zap_histogram(zs.zs_blocks_with_n5_entries); 276 277 (void) printf("\t\tBlocks n/10 full:\n"); 278 dump_zap_histogram(zs.zs_blocks_n_tenths_full); 279 280 (void) printf("\t\tEntries with n chunks:\n"); 281 dump_zap_histogram(zs.zs_entries_using_n_chunks); 282 283 (void) printf("\t\tBuckets with n entries:\n"); 284 dump_zap_histogram(zs.zs_buckets_with_n_entries); 285 } 286 287 /*ARGSUSED*/ 288 static void 289 dump_none(objset_t *os, uint64_t object, void *data, size_t size) 290 { 291 } 292 293 /*ARGSUSED*/ 294 static void 295 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size) 296 { 297 (void) printf("\tUNKNOWN OBJECT TYPE\n"); 298 } 299 300 /*ARGSUSED*/ 301 void 302 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) 303 { 304 } 305 306 /*ARGSUSED*/ 307 static void 308 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) 309 { 310 } 311 312 /*ARGSUSED*/ 313 static void 314 dump_zap(objset_t *os, uint64_t object, void *data, size_t size) 315 { 316 zap_cursor_t zc; 317 zap_attribute_t attr; 318 void *prop; 319 int i; 320 321 dump_zap_stats(os, object); 322 (void) printf("\n"); 323 324 for (zap_cursor_init(&zc, os, object); 325 zap_cursor_retrieve(&zc, &attr) == 0; 326 zap_cursor_advance(&zc)) { 327 (void) printf("\t\t%s = ", attr.za_name); 328 if (attr.za_num_integers == 0) { 329 (void) printf("\n"); 330 continue; 331 } 332 prop = umem_zalloc(attr.za_num_integers * 333 attr.za_integer_length, UMEM_NOFAIL); 334 (void) zap_lookup(os, object, attr.za_name, 335 attr.za_integer_length, attr.za_num_integers, prop); 336 if (attr.za_integer_length == 1) { 337 (void) printf("%s", (char *)prop); 338 } else { 339 for (i = 0; i < attr.za_num_integers; i++) { 340 switch (attr.za_integer_length) { 341 case 2: 342 (void) printf("%u ", 343 ((uint16_t *)prop)[i]); 344 break; 345 case 4: 346 (void) printf("%u ", 347 ((uint32_t *)prop)[i]); 348 break; 349 case 8: 350 (void) printf("%lld ", 351 (u_longlong_t)((int64_t *)prop)[i]); 352 break; 353 } 354 } 355 } 356 (void) printf("\n"); 357 umem_free(prop, attr.za_num_integers * attr.za_integer_length); 358 } 359 zap_cursor_fini(&zc); 360 } 361 362 /*ARGSUSED*/ 363 static void 364 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size) 365 { 366 dump_zap_stats(os, object); 367 /* contents are printed elsewhere, properly decoded */ 368 } 369 370 /*ARGSUSED*/ 371 static void 372 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size) 373 { 374 zap_cursor_t zc; 375 zap_attribute_t attr; 376 const char *typenames[] = { 377 /* 0 */ "not specified", 378 /* 1 */ "FIFO", 379 /* 2 */ "Character Device", 380 /* 3 */ "3 (invalid)", 381 /* 4 */ "Directory", 382 /* 5 */ "5 (invalid)", 383 /* 6 */ "Block Device", 384 /* 7 */ "7 (invalid)", 385 /* 8 */ "Regular File", 386 /* 9 */ "9 (invalid)", 387 /* 10 */ "Symbolic Link", 388 /* 11 */ "11 (invalid)", 389 /* 12 */ "Socket", 390 /* 13 */ "Door", 391 /* 14 */ "Event Port", 392 /* 15 */ "15 (invalid)", 393 }; 394 395 dump_zap_stats(os, object); 396 (void) printf("\n"); 397 398 for (zap_cursor_init(&zc, os, object); 399 zap_cursor_retrieve(&zc, &attr) == 0; 400 zap_cursor_advance(&zc)) { 401 (void) printf("\t\t%s = %lld (type: %s)\n", 402 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer), 403 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]); 404 } 405 zap_cursor_fini(&zc); 406 } 407 408 static void 409 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm) 410 { 411 uint64_t alloc, offset, entry; 412 uint8_t mapshift = sm->sm_shift; 413 uint64_t mapstart = sm->sm_start; 414 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID", 415 "INVALID", "INVALID", "INVALID", "INVALID" }; 416 417 if (smo->smo_object == 0) 418 return; 419 420 /* 421 * Print out the freelist entries in both encoded and decoded form. 422 */ 423 alloc = 0; 424 for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) { 425 VERIFY(0 == dmu_read(os, smo->smo_object, offset, 426 sizeof (entry), &entry, DMU_READ_PREFETCH)); 427 if (SM_DEBUG_DECODE(entry)) { 428 (void) printf("\t [%6llu] %s: txg %llu, pass %llu\n", 429 (u_longlong_t)(offset / sizeof (entry)), 430 ddata[SM_DEBUG_ACTION_DECODE(entry)], 431 (u_longlong_t)SM_DEBUG_TXG_DECODE(entry), 432 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry)); 433 } else { 434 (void) printf("\t [%6llu] %c range:" 435 " %010llx-%010llx size: %06llx\n", 436 (u_longlong_t)(offset / sizeof (entry)), 437 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 438 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 439 mapshift) + mapstart), 440 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 441 mapshift) + mapstart + (SM_RUN_DECODE(entry) << 442 mapshift)), 443 (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift)); 444 if (SM_TYPE_DECODE(entry) == SM_ALLOC) 445 alloc += SM_RUN_DECODE(entry) << mapshift; 446 else 447 alloc -= SM_RUN_DECODE(entry) << mapshift; 448 } 449 } 450 if (alloc != smo->smo_alloc) { 451 (void) printf("space_map_object alloc (%llu) INCONSISTENT " 452 "with space map summary (%llu)\n", 453 (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc); 454 } 455 } 456 457 static void 458 dump_metaslab_stats(metaslab_t *msp) 459 { 460 char maxbuf[5]; 461 space_map_t *sm = &msp->ms_map; 462 avl_tree_t *t = sm->sm_pp_root; 463 int free_pct = sm->sm_space * 100 / sm->sm_size; 464 465 nicenum(space_map_maxsize(sm), maxbuf, sizeof(maxbuf)); 466 467 (void) printf("\t %25s %10lu %7s %6s %4s %4d%%\n", 468 "segments", avl_numnodes(t), "maxsize", maxbuf, 469 "freepct", free_pct); 470 } 471 472 static void 473 dump_metaslab(metaslab_t *msp) 474 { 475 vdev_t *vd = msp->ms_group->mg_vd; 476 spa_t *spa = vd->vdev_spa; 477 space_map_t *sm = &msp->ms_map; 478 space_map_obj_t *smo = &msp->ms_smo; 479 char freebuf[5]; 480 481 nicenum(sm->sm_size - smo->smo_alloc, freebuf, sizeof(freebuf)); 482 483 (void) printf( 484 "\tmetaslab %6llu offset %12llx spacemap %6llu free %5s\n", 485 (u_longlong_t)(sm->sm_start / sm->sm_size), 486 (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf); 487 488 if (dump_opt['m'] > 1 && !dump_opt['L']) { 489 mutex_enter(&msp->ms_lock); 490 space_map_load_wait(sm); 491 if (!sm->sm_loaded) 492 VERIFY(space_map_load(sm, zfs_metaslab_ops, 493 SM_FREE, smo, spa->spa_meta_objset) == 0); 494 dump_metaslab_stats(msp); 495 space_map_unload(sm); 496 mutex_exit(&msp->ms_lock); 497 } 498 499 if (dump_opt['d'] > 5 || dump_opt['m'] > 2) { 500 ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift)); 501 502 mutex_enter(&msp->ms_lock); 503 dump_spacemap(spa->spa_meta_objset, smo, sm); 504 mutex_exit(&msp->ms_lock); 505 } 506 } 507 508 static void 509 print_vdev_metaslab_header(vdev_t *vd) 510 { 511 (void) printf("\tvdev %10llu\n\t%-10s%5llu %-19s %-15s %-10s\n", 512 (u_longlong_t)vd->vdev_id, 513 "metaslabs", (u_longlong_t)vd->vdev_ms_count, 514 "offset", "spacemap", "free"); 515 (void) printf("\t%15s %19s %15s %10s\n", 516 "---------------", "-------------------", 517 "---------------", "-------------"); 518 } 519 520 static void 521 dump_metaslabs(spa_t *spa) 522 { 523 vdev_t *vd, *rvd = spa->spa_root_vdev; 524 uint64_t m, c = 0, children = rvd->vdev_children; 525 526 (void) printf("\nMetaslabs:\n"); 527 528 if (!dump_opt['d'] && zopt_objects > 0) { 529 c = zopt_object[0]; 530 531 if (c >= children) 532 (void) fatal("bad vdev id: %llu", (u_longlong_t)c); 533 534 if (zopt_objects > 1) { 535 vd = rvd->vdev_child[c]; 536 print_vdev_metaslab_header(vd); 537 538 for (m = 1; m < zopt_objects; m++) { 539 if (zopt_object[m] < vd->vdev_ms_count) 540 dump_metaslab( 541 vd->vdev_ms[zopt_object[m]]); 542 else 543 (void) fprintf(stderr, "bad metaslab " 544 "number %llu\n", 545 (u_longlong_t)zopt_object[m]); 546 } 547 (void) printf("\n"); 548 return; 549 } 550 children = c + 1; 551 } 552 for (; c < children; c++) { 553 vd = rvd->vdev_child[c]; 554 print_vdev_metaslab_header(vd); 555 556 for (m = 0; m < vd->vdev_ms_count; m++) 557 dump_metaslab(vd->vdev_ms[m]); 558 (void) printf("\n"); 559 } 560 } 561 562 static void 563 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index) 564 { 565 const ddt_phys_t *ddp = dde->dde_phys; 566 const ddt_key_t *ddk = &dde->dde_key; 567 char *types[4] = { "ditto", "single", "double", "triple" }; 568 char blkbuf[BP_SPRINTF_LEN]; 569 blkptr_t blk; 570 571 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 572 if (ddp->ddp_phys_birth == 0) 573 continue; 574 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk); 575 snprintf_blkptr(blkbuf, sizeof(blkbuf), &blk); 576 (void) printf("index %llx refcnt %llu %s %s\n", 577 (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt, 578 types[p], blkbuf); 579 } 580 } 581 582 static void 583 dump_dedup_ratio(const ddt_stat_t *dds) 584 { 585 double rL, rP, rD, D, dedup, compress, copies; 586 587 if (dds->dds_blocks == 0) 588 return; 589 590 rL = (double)dds->dds_ref_lsize; 591 rP = (double)dds->dds_ref_psize; 592 rD = (double)dds->dds_ref_dsize; 593 D = (double)dds->dds_dsize; 594 595 dedup = rD / D; 596 compress = rL / rP; 597 copies = rD / rP; 598 599 (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, " 600 "dedup * compress / copies = %.2f\n\n", 601 dedup, compress, copies, dedup * compress / copies); 602 } 603 604 static void 605 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class) 606 { 607 char name[DDT_NAMELEN]; 608 ddt_entry_t dde; 609 uint64_t walk = 0; 610 dmu_object_info_t doi; 611 uint64_t count, dspace, mspace; 612 int error; 613 614 error = ddt_object_info(ddt, type, class, &doi); 615 616 if (error == ENOENT) 617 return; 618 ASSERT(error == 0); 619 620 count = ddt_object_count(ddt, type, class); 621 dspace = doi.doi_physical_blocks_512 << 9; 622 mspace = doi.doi_fill_count * doi.doi_data_block_size; 623 624 ASSERT(count != 0); /* we should have destroyed it */ 625 626 ddt_object_name(ddt, type, class, name, sizeof(name)); 627 628 (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n", 629 name, 630 (u_longlong_t)count, 631 (u_longlong_t)(dspace / count), 632 (u_longlong_t)(mspace / count)); 633 634 if (dump_opt['D'] < 3) 635 return; 636 637 zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]); 638 639 if (dump_opt['D'] < 4) 640 return; 641 642 if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE) 643 return; 644 645 (void) printf("%s contents:\n\n", name); 646 647 while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0) 648 dump_dde(ddt, &dde, walk); 649 650 ASSERT(error == ENOENT); 651 652 (void) printf("\n"); 653 } 654 655 static void 656 dump_all_ddts(spa_t *spa) 657 { 658 ddt_histogram_t ddh_total = { 0 }; 659 ddt_stat_t dds_total = { 0 }; 660 661 for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { 662 ddt_t *ddt = spa->spa_ddt[c]; 663 for (enum ddt_type type = 0; type < DDT_TYPES; type++) { 664 for (enum ddt_class class = 0; class < DDT_CLASSES; 665 class++) { 666 dump_ddt(ddt, type, class); 667 } 668 } 669 } 670 671 ddt_get_dedup_stats(spa, &dds_total); 672 673 if (dds_total.dds_blocks == 0) { 674 (void) printf("All DDTs are empty\n"); 675 return; 676 } 677 678 (void) printf("\n"); 679 680 if (dump_opt['D'] > 1) { 681 (void) printf("DDT histogram (aggregated over all DDTs):\n"); 682 ddt_get_dedup_histogram(spa, &ddh_total); 683 zpool_dump_ddt(&dds_total, &ddh_total); 684 } 685 686 dump_dedup_ratio(&dds_total); 687 } 688 689 static void 690 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size) 691 { 692 char *prefix = (void *)sm; 693 694 (void) printf("%s [%llu,%llu) length %llu\n", 695 prefix, 696 (u_longlong_t)start, 697 (u_longlong_t)(start + size), 698 (u_longlong_t)(size)); 699 } 700 701 static void 702 dump_dtl(vdev_t *vd, int indent) 703 { 704 spa_t *spa = vd->vdev_spa; 705 boolean_t required; 706 char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" }; 707 char prefix[256]; 708 709 spa_vdev_state_enter(spa, SCL_NONE); 710 required = vdev_dtl_required(vd); 711 (void) spa_vdev_state_exit(spa, NULL, 0); 712 713 if (indent == 0) 714 (void) printf("\nDirty time logs:\n\n"); 715 716 (void) printf("\t%*s%s [%s]\n", indent, "", 717 vd->vdev_path ? vd->vdev_path : 718 vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa), 719 required ? "DTL-required" : "DTL-expendable"); 720 721 for (int t = 0; t < DTL_TYPES; t++) { 722 space_map_t *sm = &vd->vdev_dtl[t]; 723 if (sm->sm_space == 0) 724 continue; 725 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s", 726 indent + 2, "", name[t]); 727 mutex_enter(sm->sm_lock); 728 space_map_walk(sm, dump_dtl_seg, (void *)prefix); 729 mutex_exit(sm->sm_lock); 730 if (dump_opt['d'] > 5 && vd->vdev_children == 0) 731 dump_spacemap(spa->spa_meta_objset, 732 &vd->vdev_dtl_smo, sm); 733 } 734 735 for (int c = 0; c < vd->vdev_children; c++) 736 dump_dtl(vd->vdev_child[c], indent + 4); 737 } 738 739 static void 740 dump_history(spa_t *spa) 741 { 742 nvlist_t **events = NULL; 743 char buf[SPA_MAXBLOCKSIZE]; 744 uint64_t resid, len, off = 0; 745 uint_t num = 0; 746 int error; 747 time_t tsec; 748 struct tm t; 749 char tbuf[30]; 750 char internalstr[MAXPATHLEN]; 751 752 do { 753 len = sizeof (buf); 754 755 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) { 756 (void) fprintf(stderr, "Unable to read history: " 757 "error %d\n", error); 758 return; 759 } 760 761 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0) 762 break; 763 764 off -= resid; 765 } while (len != 0); 766 767 (void) printf("\nHistory:\n"); 768 for (int i = 0; i < num; i++) { 769 uint64_t time, txg, ievent; 770 char *cmd, *intstr; 771 772 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME, 773 &time) != 0) 774 continue; 775 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD, 776 &cmd) != 0) { 777 if (nvlist_lookup_uint64(events[i], 778 ZPOOL_HIST_INT_EVENT, &ievent) != 0) 779 continue; 780 verify(nvlist_lookup_uint64(events[i], 781 ZPOOL_HIST_TXG, &txg) == 0); 782 verify(nvlist_lookup_string(events[i], 783 ZPOOL_HIST_INT_STR, &intstr) == 0); 784 if (ievent >= LOG_END) 785 continue; 786 787 (void) snprintf(internalstr, 788 sizeof (internalstr), 789 "[internal %s txg:%lld] %s", 790 hist_event_table[ievent], txg, 791 intstr); 792 cmd = internalstr; 793 } 794 tsec = time; 795 (void) localtime_r(&tsec, &t); 796 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t); 797 (void) printf("%s %s\n", tbuf, cmd); 798 } 799 } 800 801 /*ARGSUSED*/ 802 static void 803 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 804 { 805 } 806 807 static uint64_t 808 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb) 809 { 810 if (dnp == NULL) { 811 ASSERT(zb->zb_level < 0); 812 if (zb->zb_object == 0) 813 return (zb->zb_blkid); 814 return (zb->zb_blkid * BP_GET_LSIZE(bp)); 815 } 816 817 ASSERT(zb->zb_level >= 0); 818 819 return ((zb->zb_blkid << 820 (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 821 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 822 } 823 824 static void 825 snprintf_blkptr_compact(char *blkbuf, size_t blklen, blkptr_t *bp) 826 { 827 dva_t *dva = bp->blk_dva; 828 int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1; 829 size_t len; 830 831 if (dump_opt['b'] >= 5) { 832 snprintf_blkptr(blkbuf, blklen, bp); 833 return; 834 } 835 836 blkbuf[0] = '\0'; 837 838 len = 0; 839 for (int i = 0; i < ndvas; i++) { 840 len += snprintf(blkbuf + len, blklen - len, "%llu:%llx:%llx ", 841 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 842 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 843 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 844 if (len > blklen) 845 len = blklen; 846 } 847 848 snprintf(blkbuf + len, blklen - len, 849 "%llxL/%llxP F=%llu B=%llu/%llu", 850 (u_longlong_t)BP_GET_LSIZE(bp), 851 (u_longlong_t)BP_GET_PSIZE(bp), 852 (u_longlong_t)bp->blk_fill, 853 (u_longlong_t)bp->blk_birth, 854 (u_longlong_t)BP_PHYSICAL_BIRTH(bp)); 855 } 856 857 static void 858 print_indirect(blkptr_t *bp, const zbookmark_t *zb, 859 const dnode_phys_t *dnp) 860 { 861 char blkbuf[BP_SPRINTF_LEN]; 862 int l; 863 864 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 865 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 866 867 (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb)); 868 869 ASSERT(zb->zb_level >= 0); 870 871 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 872 if (l == zb->zb_level) { 873 (void) printf("L%llx", (u_longlong_t)zb->zb_level); 874 } else { 875 (void) printf(" "); 876 } 877 } 878 879 snprintf_blkptr_compact(blkbuf, sizeof(blkbuf), bp); 880 (void) printf("%s\n", blkbuf); 881 } 882 883 static int 884 visit_indirect(spa_t *spa, const dnode_phys_t *dnp, 885 blkptr_t *bp, const zbookmark_t *zb) 886 { 887 int err = 0; 888 889 if (bp->blk_birth == 0) 890 return (0); 891 892 print_indirect(bp, zb, dnp); 893 894 if (BP_GET_LEVEL(bp) > 0) { 895 uint32_t flags = ARC_WAIT; 896 int i; 897 blkptr_t *cbp; 898 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT; 899 arc_buf_t *buf; 900 uint64_t fill = 0; 901 902 err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf, 903 ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb); 904 if (err) 905 return (err); 906 907 /* recursively visit blocks below this */ 908 cbp = buf->b_data; 909 for (i = 0; i < epb; i++, cbp++) { 910 zbookmark_t czb; 911 912 SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object, 913 zb->zb_level - 1, 914 zb->zb_blkid * epb + i); 915 err = visit_indirect(spa, dnp, cbp, &czb); 916 if (err) 917 break; 918 fill += cbp->blk_fill; 919 } 920 if (!err) 921 ASSERT3U(fill, ==, bp->blk_fill); 922 (void) arc_buf_remove_ref(buf, &buf); 923 } 924 925 return (err); 926 } 927 928 /*ARGSUSED*/ 929 static void 930 dump_indirect(dnode_t *dn) 931 { 932 dnode_phys_t *dnp = dn->dn_phys; 933 int j; 934 zbookmark_t czb; 935 936 (void) printf("Indirect blocks:\n"); 937 938 SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset), 939 dn->dn_object, dnp->dn_nlevels - 1, 0); 940 for (j = 0; j < dnp->dn_nblkptr; j++) { 941 czb.zb_blkid = j; 942 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp, 943 &dnp->dn_blkptr[j], &czb); 944 } 945 946 (void) printf("\n"); 947 } 948 949 /*ARGSUSED*/ 950 static void 951 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 952 { 953 dsl_dir_phys_t *dd = data; 954 time_t crtime; 955 char nice[6]; 956 957 if (dd == NULL) 958 return; 959 960 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t)); 961 962 crtime = dd->dd_creation_time; 963 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 964 (void) printf("\t\thead_dataset_obj = %llu\n", 965 (u_longlong_t)dd->dd_head_dataset_obj); 966 (void) printf("\t\tparent_dir_obj = %llu\n", 967 (u_longlong_t)dd->dd_parent_obj); 968 (void) printf("\t\torigin_obj = %llu\n", 969 (u_longlong_t)dd->dd_origin_obj); 970 (void) printf("\t\tchild_dir_zapobj = %llu\n", 971 (u_longlong_t)dd->dd_child_dir_zapobj); 972 nicenum(dd->dd_used_bytes, nice, sizeof(nice)); 973 (void) printf("\t\tused_bytes = %s\n", nice); 974 nicenum(dd->dd_compressed_bytes, nice, sizeof(nice)); 975 (void) printf("\t\tcompressed_bytes = %s\n", nice); 976 nicenum(dd->dd_uncompressed_bytes, nice, sizeof(nice)); 977 (void) printf("\t\tuncompressed_bytes = %s\n", nice); 978 nicenum(dd->dd_quota, nice, sizeof(nice)); 979 (void) printf("\t\tquota = %s\n", nice); 980 nicenum(dd->dd_reserved, nice, sizeof(nice)); 981 (void) printf("\t\treserved = %s\n", nice); 982 (void) printf("\t\tprops_zapobj = %llu\n", 983 (u_longlong_t)dd->dd_props_zapobj); 984 (void) printf("\t\tdeleg_zapobj = %llu\n", 985 (u_longlong_t)dd->dd_deleg_zapobj); 986 (void) printf("\t\tflags = %llx\n", 987 (u_longlong_t)dd->dd_flags); 988 989 #define DO(which) \ 990 nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice, sizeof(nice)); \ 991 (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice) 992 DO(HEAD); 993 DO(SNAP); 994 DO(CHILD); 995 DO(CHILD_RSRV); 996 DO(REFRSRV); 997 #undef DO 998 } 999 1000 /*ARGSUSED*/ 1001 static void 1002 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 1003 { 1004 dsl_dataset_phys_t *ds = data; 1005 time_t crtime; 1006 char used[6], compressed[6], uncompressed[6], unique[6]; 1007 char blkbuf[BP_SPRINTF_LEN]; 1008 1009 if (ds == NULL) 1010 return; 1011 1012 ASSERT(size == sizeof (*ds)); 1013 crtime = ds->ds_creation_time; 1014 nicenum(ds->ds_used_bytes, used, sizeof(used)); 1015 nicenum(ds->ds_compressed_bytes, compressed, sizeof(compressed)); 1016 nicenum(ds->ds_uncompressed_bytes, uncompressed, sizeof(uncompressed)); 1017 nicenum(ds->ds_unique_bytes, unique, sizeof(unique)); 1018 snprintf_blkptr(blkbuf, sizeof(blkbuf), &ds->ds_bp); 1019 1020 (void) printf("\t\tdir_obj = %llu\n", 1021 (u_longlong_t)ds->ds_dir_obj); 1022 (void) printf("\t\tprev_snap_obj = %llu\n", 1023 (u_longlong_t)ds->ds_prev_snap_obj); 1024 (void) printf("\t\tprev_snap_txg = %llu\n", 1025 (u_longlong_t)ds->ds_prev_snap_txg); 1026 (void) printf("\t\tnext_snap_obj = %llu\n", 1027 (u_longlong_t)ds->ds_next_snap_obj); 1028 (void) printf("\t\tsnapnames_zapobj = %llu\n", 1029 (u_longlong_t)ds->ds_snapnames_zapobj); 1030 (void) printf("\t\tnum_children = %llu\n", 1031 (u_longlong_t)ds->ds_num_children); 1032 (void) printf("\t\tuserrefs_obj = %llu\n", 1033 (u_longlong_t)ds->ds_userrefs_obj); 1034 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1035 (void) printf("\t\tcreation_txg = %llu\n", 1036 (u_longlong_t)ds->ds_creation_txg); 1037 (void) printf("\t\tdeadlist_obj = %llu\n", 1038 (u_longlong_t)ds->ds_deadlist_obj); 1039 (void) printf("\t\tused_bytes = %s\n", used); 1040 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 1041 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 1042 (void) printf("\t\tunique = %s\n", unique); 1043 (void) printf("\t\tfsid_guid = %llu\n", 1044 (u_longlong_t)ds->ds_fsid_guid); 1045 (void) printf("\t\tguid = %llu\n", 1046 (u_longlong_t)ds->ds_guid); 1047 (void) printf("\t\tflags = %llx\n", 1048 (u_longlong_t)ds->ds_flags); 1049 (void) printf("\t\tnext_clones_obj = %llu\n", 1050 (u_longlong_t)ds->ds_next_clones_obj); 1051 (void) printf("\t\tprops_obj = %llu\n", 1052 (u_longlong_t)ds->ds_props_obj); 1053 (void) printf("\t\tbp = %s\n", blkbuf); 1054 } 1055 1056 static void 1057 dump_bplist(objset_t *mos, uint64_t object, char *name) 1058 { 1059 bplist_t bpl = { 0 }; 1060 blkptr_t blk, *bp = &blk; 1061 uint64_t itor = 0; 1062 char bytes[6]; 1063 char comp[6]; 1064 char uncomp[6]; 1065 1066 if (dump_opt['d'] < 3) 1067 return; 1068 1069 bplist_init(&bpl); 1070 VERIFY(0 == bplist_open(&bpl, mos, object)); 1071 if (bplist_empty(&bpl)) { 1072 bplist_close(&bpl); 1073 bplist_fini(&bpl); 1074 return; 1075 } 1076 1077 nicenum(bpl.bpl_phys->bpl_bytes, bytes, sizeof(bytes)); 1078 if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) { 1079 nicenum(bpl.bpl_phys->bpl_comp, comp, sizeof(comp)); 1080 nicenum(bpl.bpl_phys->bpl_uncomp, uncomp, sizeof(uncomp)); 1081 (void) printf("\n %s: %llu entries, %s (%s/%s comp)\n", 1082 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, 1083 bytes, comp, uncomp); 1084 } else { 1085 (void) printf("\n %s: %llu entries, %s\n", 1086 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes); 1087 } 1088 1089 if (dump_opt['d'] < 5) { 1090 bplist_close(&bpl); 1091 bplist_fini(&bpl); 1092 return; 1093 } 1094 1095 (void) printf("\n"); 1096 1097 while (bplist_iterate(&bpl, &itor, bp) == 0) { 1098 char blkbuf[BP_SPRINTF_LEN]; 1099 1100 ASSERT(bp->blk_birth != 0); 1101 snprintf_blkptr_compact(blkbuf, sizeof(blkbuf), bp); 1102 (void) printf("\tItem %3llu: %s\n", 1103 (u_longlong_t)itor - 1, blkbuf); 1104 } 1105 1106 bplist_close(&bpl); 1107 bplist_fini(&bpl); 1108 } 1109 1110 static avl_tree_t idx_tree; 1111 static avl_tree_t domain_tree; 1112 static boolean_t fuid_table_loaded; 1113 1114 static void 1115 fuid_table_destroy() 1116 { 1117 if (fuid_table_loaded) { 1118 zfs_fuid_table_destroy(&idx_tree, &domain_tree); 1119 fuid_table_loaded = B_FALSE; 1120 } 1121 } 1122 1123 /* 1124 * print uid or gid information. 1125 * For normal POSIX id just the id is printed in decimal format. 1126 * For CIFS files with FUID the fuid is printed in hex followed by 1127 * the doman-rid string. 1128 */ 1129 static void 1130 print_idstr(uint64_t id, const char *id_type) 1131 { 1132 if (FUID_INDEX(id)) { 1133 char *domain; 1134 1135 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id)); 1136 (void) printf("\t%s %llx [%s-%d]\n", id_type, 1137 (u_longlong_t)id, domain, (int)FUID_RID(id)); 1138 } else { 1139 (void) printf("\t%s %llu\n", id_type, (u_longlong_t)id); 1140 } 1141 1142 } 1143 1144 static void 1145 dump_uidgid(objset_t *os, znode_phys_t *zp) 1146 { 1147 uint32_t uid_idx, gid_idx; 1148 1149 uid_idx = FUID_INDEX(zp->zp_uid); 1150 gid_idx = FUID_INDEX(zp->zp_gid); 1151 1152 /* Load domain table, if not already loaded */ 1153 if (!fuid_table_loaded && (uid_idx || gid_idx)) { 1154 uint64_t fuid_obj; 1155 1156 /* first find the fuid object. It lives in the master node */ 1157 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 1158 8, 1, &fuid_obj) == 0); 1159 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree); 1160 (void) zfs_fuid_table_load(os, fuid_obj, 1161 &idx_tree, &domain_tree); 1162 fuid_table_loaded = B_TRUE; 1163 } 1164 1165 print_idstr(zp->zp_uid, "uid"); 1166 print_idstr(zp->zp_gid, "gid"); 1167 } 1168 1169 /*ARGSUSED*/ 1170 static void 1171 dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 1172 { 1173 znode_phys_t *zp = data; 1174 time_t z_crtime, z_atime, z_mtime, z_ctime; 1175 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 1176 int error; 1177 1178 ASSERT(size >= sizeof (znode_phys_t)); 1179 1180 error = zfs_obj_to_path(os, object, path, sizeof (path)); 1181 if (error != 0) { 1182 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>", 1183 (u_longlong_t)object); 1184 } 1185 1186 if (dump_opt['d'] < 3) { 1187 (void) printf("\t%s\n", path); 1188 return; 1189 } 1190 1191 z_crtime = (time_t)zp->zp_crtime[0]; 1192 z_atime = (time_t)zp->zp_atime[0]; 1193 z_mtime = (time_t)zp->zp_mtime[0]; 1194 z_ctime = (time_t)zp->zp_ctime[0]; 1195 1196 (void) printf("\tpath %s\n", path); 1197 dump_uidgid(os, zp); 1198 (void) printf("\tatime %s", ctime(&z_atime)); 1199 (void) printf("\tmtime %s", ctime(&z_mtime)); 1200 (void) printf("\tctime %s", ctime(&z_ctime)); 1201 (void) printf("\tcrtime %s", ctime(&z_crtime)); 1202 (void) printf("\tgen %llu\n", (u_longlong_t)zp->zp_gen); 1203 (void) printf("\tmode %llo\n", (u_longlong_t)zp->zp_mode); 1204 (void) printf("\tsize %llu\n", (u_longlong_t)zp->zp_size); 1205 (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent); 1206 (void) printf("\tlinks %llu\n", (u_longlong_t)zp->zp_links); 1207 (void) printf("\txattr %llu\n", (u_longlong_t)zp->zp_xattr); 1208 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)zp->zp_rdev); 1209 } 1210 1211 /*ARGSUSED*/ 1212 static void 1213 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 1214 { 1215 } 1216 1217 /*ARGSUSED*/ 1218 static void 1219 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 1220 { 1221 } 1222 1223 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = { 1224 dump_none, /* unallocated */ 1225 dump_zap, /* object directory */ 1226 dump_uint64, /* object array */ 1227 dump_none, /* packed nvlist */ 1228 dump_packed_nvlist, /* packed nvlist size */ 1229 dump_none, /* bplist */ 1230 dump_none, /* bplist header */ 1231 dump_none, /* SPA space map header */ 1232 dump_none, /* SPA space map */ 1233 dump_none, /* ZIL intent log */ 1234 dump_dnode, /* DMU dnode */ 1235 dump_dmu_objset, /* DMU objset */ 1236 dump_dsl_dir, /* DSL directory */ 1237 dump_zap, /* DSL directory child map */ 1238 dump_zap, /* DSL dataset snap map */ 1239 dump_zap, /* DSL props */ 1240 dump_dsl_dataset, /* DSL dataset */ 1241 dump_znode, /* ZFS znode */ 1242 dump_acl, /* ZFS V0 ACL */ 1243 dump_uint8, /* ZFS plain file */ 1244 dump_zpldir, /* ZFS directory */ 1245 dump_zap, /* ZFS master node */ 1246 dump_zap, /* ZFS delete queue */ 1247 dump_uint8, /* zvol object */ 1248 dump_zap, /* zvol prop */ 1249 dump_uint8, /* other uint8[] */ 1250 dump_uint64, /* other uint64[] */ 1251 dump_zap, /* other ZAP */ 1252 dump_zap, /* persistent error log */ 1253 dump_uint8, /* SPA history */ 1254 dump_uint64, /* SPA history offsets */ 1255 dump_zap, /* Pool properties */ 1256 dump_zap, /* DSL permissions */ 1257 dump_acl, /* ZFS ACL */ 1258 dump_uint8, /* ZFS SYSACL */ 1259 dump_none, /* FUID nvlist */ 1260 dump_packed_nvlist, /* FUID nvlist size */ 1261 dump_zap, /* DSL dataset next clones */ 1262 dump_zap, /* DSL scrub queue */ 1263 dump_zap, /* ZFS user/group used */ 1264 dump_zap, /* ZFS user/group quota */ 1265 dump_zap, /* snapshot refcount tags */ 1266 dump_ddt_zap, /* DDT ZAP object */ 1267 dump_zap, /* DDT statistics */ 1268 dump_unknown /* Unknown type, must be last */ 1269 }; 1270 1271 static void 1272 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 1273 { 1274 dmu_buf_t *db = NULL; 1275 dmu_object_info_t doi; 1276 dnode_t *dn; 1277 void *bonus = NULL; 1278 size_t bsize = 0; 1279 char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], fill[7]; 1280 char aux[50]; 1281 int error; 1282 1283 if (*print_header) { 1284 (void) printf("\n%10s %3s %5s %5s %5s %5s %6s %s\n", 1285 "Object", "lvl", "iblk", "dblk", "dsize", "lsize", 1286 "%full", "type"); 1287 *print_header = 0; 1288 } 1289 1290 if (object == 0) { 1291 dn = os->os_meta_dnode; 1292 } else { 1293 error = dmu_bonus_hold(os, object, FTAG, &db); 1294 if (error) 1295 fatal("dmu_bonus_hold(%llu) failed, errno %u", 1296 object, error); 1297 bonus = db->db_data; 1298 bsize = db->db_size; 1299 dn = ((dmu_buf_impl_t *)db)->db_dnode; 1300 } 1301 dmu_object_info_from_dnode(dn, &doi); 1302 1303 nicenum(doi.doi_metadata_block_size, iblk, sizeof(iblk)); 1304 nicenum(doi.doi_data_block_size, dblk, sizeof(dblk)); 1305 nicenum(doi.doi_max_offset, lsize, sizeof(lsize)); 1306 nicenum(doi.doi_physical_blocks_512 << 9, asize, sizeof(asize)); 1307 nicenum(doi.doi_bonus_size, bonus_size, sizeof(bonus_size)); 1308 (void) snprintf(fill, sizeof(fill), "%6.2f", 100.0 * doi.doi_fill_count * 1309 doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) / 1310 doi.doi_max_offset); 1311 1312 aux[0] = '\0'; 1313 1314 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 1315 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 1316 ZDB_CHECKSUM_NAME(doi.doi_checksum)); 1317 } 1318 1319 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 1320 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 1321 ZDB_COMPRESS_NAME(doi.doi_compress)); 1322 } 1323 1324 (void) printf("%10lld %3u %5s %5s %5s %5s %6s %s%s\n", 1325 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, 1326 asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux); 1327 1328 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 1329 (void) printf("%10s %3s %5s %5s %5s %5s %6s %s\n", 1330 "", "", "", "", "", bonus_size, "bonus", 1331 ZDB_OT_NAME(doi.doi_bonus_type)); 1332 } 1333 1334 if (verbosity >= 4) { 1335 (void) printf("\tdnode flags: %s%s\n", 1336 (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ? 1337 "USED_BYTES " : "", 1338 (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ? 1339 "USERUSED_ACCOUNTED " : ""); 1340 (void) printf("\tdnode maxblkid: %llu\n", 1341 (longlong_t)dn->dn_phys->dn_maxblkid); 1342 1343 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object, 1344 bonus, bsize); 1345 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0); 1346 *print_header = 1; 1347 } 1348 1349 if (verbosity >= 5) 1350 dump_indirect(dn); 1351 1352 if (verbosity >= 5) { 1353 /* 1354 * Report the list of segments that comprise the object. 1355 */ 1356 uint64_t start = 0; 1357 uint64_t end; 1358 uint64_t blkfill = 1; 1359 int minlvl = 1; 1360 1361 if (dn->dn_type == DMU_OT_DNODE) { 1362 minlvl = 0; 1363 blkfill = DNODES_PER_BLOCK; 1364 } 1365 1366 for (;;) { 1367 char segsize[6]; 1368 error = dnode_next_offset(dn, 1369 0, &start, minlvl, blkfill, 0); 1370 if (error) 1371 break; 1372 end = start; 1373 error = dnode_next_offset(dn, 1374 DNODE_FIND_HOLE, &end, minlvl, blkfill, 0); 1375 nicenum(end - start, segsize, sizeof(segsize)); 1376 (void) printf("\t\tsegment [%016llx, %016llx)" 1377 " size %5s\n", (u_longlong_t)start, 1378 (u_longlong_t)end, segsize); 1379 if (error) 1380 break; 1381 start = end; 1382 } 1383 } 1384 1385 if (db != NULL) 1386 dmu_buf_rele(db, FTAG); 1387 } 1388 1389 static char *objset_types[DMU_OST_NUMTYPES] = { 1390 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1391 1392 static void 1393 dump_dir(objset_t *os) 1394 { 1395 dmu_objset_stats_t dds; 1396 uint64_t object, object_count; 1397 uint64_t refdbytes, usedobjs, scratch; 1398 char numbuf[8]; 1399 char blkbuf[BP_SPRINTF_LEN + 20]; 1400 char osname[MAXNAMELEN]; 1401 char *type = "UNKNOWN"; 1402 int verbosity = dump_opt['d']; 1403 int print_header = 1; 1404 int i, error; 1405 size_t len; 1406 1407 dmu_objset_fast_stat(os, &dds); 1408 1409 if (dds.dds_type < DMU_OST_NUMTYPES) 1410 type = objset_types[dds.dds_type]; 1411 1412 if (dds.dds_type == DMU_OST_META) { 1413 dds.dds_creation_txg = TXG_INITIAL; 1414 usedobjs = os->os_rootbp->blk_fill; 1415 refdbytes = os->os_spa->spa_dsl_pool-> 1416 dp_mos_dir->dd_phys->dd_used_bytes; 1417 } else { 1418 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 1419 } 1420 1421 ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill); 1422 1423 nicenum(refdbytes, numbuf, sizeof(numbuf)); 1424 1425 if (verbosity >= 4) { 1426 size_t blklen = sizeof(blkbuf); 1427 len = snprintf(blkbuf, blklen, ", rootbp "); 1428 if (len > blklen) 1429 len = blklen; 1430 snprintf_blkptr(blkbuf + len, blklen - len, os->os_rootbp); 1431 } else { 1432 blkbuf[0] = '\0'; 1433 } 1434 1435 dmu_objset_name(os, osname); 1436 1437 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 1438 "%s, %llu objects%s\n", 1439 osname, type, (u_longlong_t)dmu_objset_id(os), 1440 (u_longlong_t)dds.dds_creation_txg, 1441 numbuf, (u_longlong_t)usedobjs, blkbuf); 1442 1443 if (zopt_objects != 0) { 1444 for (i = 0; i < zopt_objects; i++) 1445 dump_object(os, zopt_object[i], verbosity, 1446 &print_header); 1447 (void) printf("\n"); 1448 return; 1449 } 1450 1451 if (dump_opt['i'] != 0 || verbosity >= 2) 1452 dump_intent_log(dmu_objset_zil(os)); 1453 1454 if (dmu_objset_ds(os) != NULL) 1455 dump_bplist(dmu_objset_pool(os)->dp_meta_objset, 1456 dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist"); 1457 1458 if (verbosity < 2) 1459 return; 1460 1461 if (os->os_rootbp->blk_birth == 0) 1462 return; 1463 1464 dump_object(os, 0, verbosity, &print_header); 1465 object_count = 0; 1466 if (os->os_userused_dnode && 1467 os->os_userused_dnode->dn_type != 0) { 1468 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header); 1469 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header); 1470 } 1471 1472 object = 0; 1473 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 1474 dump_object(os, object, verbosity, &print_header); 1475 object_count++; 1476 } 1477 1478 ASSERT3U(object_count, ==, usedobjs); 1479 1480 (void) printf("\n"); 1481 1482 if (error != ESRCH) { 1483 (void) fprintf(stderr, "dmu_object_next() = %d\n", error); 1484 abort(); 1485 } 1486 } 1487 1488 static void 1489 dump_uberblock(uberblock_t *ub, const char *header, const char *footer) 1490 { 1491 time_t timestamp = ub->ub_timestamp; 1492 1493 (void) printf(header ? header : ""); 1494 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 1495 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 1496 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 1497 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 1498 (void) printf("\ttimestamp = %llu UTC = %s", 1499 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 1500 if (dump_opt['u'] >= 3) { 1501 char blkbuf[BP_SPRINTF_LEN]; 1502 snprintf_blkptr(blkbuf, sizeof(blkbuf), &ub->ub_rootbp); 1503 (void) printf("\trootbp = %s\n", blkbuf); 1504 } 1505 (void) printf(footer ? footer : ""); 1506 } 1507 1508 static void 1509 dump_config(spa_t *spa) 1510 { 1511 dmu_buf_t *db; 1512 size_t nvsize = 0; 1513 int error = 0; 1514 1515 1516 error = dmu_bonus_hold(spa->spa_meta_objset, 1517 spa->spa_config_object, FTAG, &db); 1518 1519 if (error == 0) { 1520 nvsize = *(uint64_t *)db->db_data; 1521 dmu_buf_rele(db, FTAG); 1522 1523 (void) printf("\nMOS Configuration:\n"); 1524 dump_packed_nvlist(spa->spa_meta_objset, 1525 spa->spa_config_object, (void *)&nvsize, 1); 1526 } else { 1527 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d", 1528 (u_longlong_t)spa->spa_config_object, error); 1529 } 1530 } 1531 1532 static void 1533 dump_cachefile(const char *cachefile) 1534 { 1535 int fd; 1536 struct stat64 statbuf; 1537 char *buf; 1538 nvlist_t *config; 1539 1540 if ((fd = open64(cachefile, O_RDONLY)) < 0) { 1541 (void) printf("cannot open '%s': %s\n", cachefile, 1542 strerror(errno)); 1543 exit(1); 1544 } 1545 1546 if (fstat64(fd, &statbuf) != 0) { 1547 (void) printf("failed to stat '%s': %s\n", cachefile, 1548 strerror(errno)); 1549 exit(1); 1550 } 1551 1552 if ((buf = malloc(statbuf.st_size)) == NULL) { 1553 (void) fprintf(stderr, "failed to allocate %llu bytes\n", 1554 (u_longlong_t)statbuf.st_size); 1555 exit(1); 1556 } 1557 1558 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) { 1559 (void) fprintf(stderr, "failed to read %llu bytes\n", 1560 (u_longlong_t)statbuf.st_size); 1561 exit(1); 1562 } 1563 1564 (void) close(fd); 1565 1566 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) { 1567 (void) fprintf(stderr, "failed to unpack nvlist\n"); 1568 exit(1); 1569 } 1570 1571 free(buf); 1572 1573 dump_nvlist(config, 0); 1574 1575 nvlist_free(config); 1576 } 1577 1578 #define ZDB_MAX_UB_HEADER_SIZE 32 1579 1580 static void 1581 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift) 1582 { 1583 vdev_t vd; 1584 vdev_t *vdp = &vd; 1585 char header[ZDB_MAX_UB_HEADER_SIZE]; 1586 1587 vd.vdev_ashift = ashift; 1588 vdp->vdev_top = vdp; 1589 1590 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) { 1591 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i); 1592 uberblock_t *ub = (void *)((char *)lbl + uoff); 1593 1594 if (uberblock_verify(ub)) 1595 continue; 1596 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE, 1597 "Uberblock[%d]\n", i); 1598 dump_uberblock(ub, header, ""); 1599 } 1600 } 1601 1602 static void 1603 dump_label(const char *dev) 1604 { 1605 int fd; 1606 vdev_label_t label; 1607 char *buf = label.vl_vdev_phys.vp_nvlist; 1608 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 1609 struct stat64 statbuf; 1610 uint64_t psize, ashift; 1611 1612 if ((fd = open64(dev, O_RDONLY)) < 0) { 1613 (void) printf("cannot open '%s': %s\n", dev, strerror(errno)); 1614 exit(1); 1615 } 1616 1617 if (fstat64(fd, &statbuf) != 0) { 1618 (void) printf("failed to stat '%s': %s\n", dev, 1619 strerror(errno)); 1620 } 1621 1622 psize = statbuf.st_size; 1623 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 1624 1625 for (int l = 0; l < VDEV_LABELS; l++) { 1626 nvlist_t *config = NULL; 1627 1628 (void) printf("--------------------------------------------\n"); 1629 (void) printf("LABEL %d\n", l); 1630 (void) printf("--------------------------------------------\n"); 1631 1632 if (pread64(fd, &label, sizeof (label), 1633 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 1634 (void) printf("failed to read label %d\n", l); 1635 continue; 1636 } 1637 1638 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 1639 (void) printf("failed to unpack label %d\n", l); 1640 ashift = SPA_MINBLOCKSHIFT; 1641 } else { 1642 nvlist_t *vdev_tree = NULL; 1643 1644 dump_nvlist(config, 4); 1645 if ((nvlist_lookup_nvlist(config, 1646 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) || 1647 (nvlist_lookup_uint64(vdev_tree, 1648 ZPOOL_CONFIG_ASHIFT, &ashift) != 0)) 1649 ashift = SPA_MINBLOCKSHIFT; 1650 nvlist_free(config); 1651 } 1652 if (dump_opt['u']) 1653 dump_label_uberblocks(&label, ashift); 1654 } 1655 } 1656 1657 /*ARGSUSED*/ 1658 static int 1659 dump_one_dir(const char *dsname, void *arg) 1660 { 1661 int error; 1662 objset_t *os; 1663 1664 error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os); 1665 if (error) { 1666 (void) printf("Could not open %s, error %d\n", dsname, error); 1667 return (0); 1668 } 1669 dump_dir(os); 1670 dmu_objset_disown(os, FTAG); 1671 fuid_table_destroy(); 1672 return (0); 1673 } 1674 1675 /* 1676 * Block statistics. 1677 */ 1678 typedef struct zdb_blkstats { 1679 uint64_t zb_asize; 1680 uint64_t zb_lsize; 1681 uint64_t zb_psize; 1682 uint64_t zb_count; 1683 } zdb_blkstats_t; 1684 1685 /* 1686 * Extended object types to report deferred frees and dedup auto-ditto blocks. 1687 */ 1688 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0) 1689 #define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1) 1690 #define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 2) 1691 1692 static char *zdb_ot_extname[] = { 1693 "deferred free", 1694 "dedup ditto", 1695 "Total", 1696 }; 1697 1698 #define ZB_TOTAL DN_MAX_LEVELS 1699 1700 typedef struct zdb_cb { 1701 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1]; 1702 uint64_t zcb_dedup_asize; 1703 uint64_t zcb_dedup_blocks; 1704 uint64_t zcb_errors[256]; 1705 int zcb_readfails; 1706 int zcb_haderrors; 1707 } zdb_cb_t; 1708 1709 static void 1710 zdb_count_block(spa_t *spa, zilog_t *zilog, zdb_cb_t *zcb, const blkptr_t *bp, 1711 dmu_object_type_t type) 1712 { 1713 uint64_t refcnt = 0; 1714 1715 ASSERT(type < ZDB_OT_TOTAL); 1716 1717 if (zilog && zil_bp_tree_add(zilog, bp) != 0) 1718 return; 1719 1720 for (int i = 0; i < 4; i++) { 1721 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 1722 int t = (i & 1) ? type : ZDB_OT_TOTAL; 1723 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 1724 1725 zb->zb_asize += BP_GET_ASIZE(bp); 1726 zb->zb_lsize += BP_GET_LSIZE(bp); 1727 zb->zb_psize += BP_GET_PSIZE(bp); 1728 zb->zb_count++; 1729 } 1730 1731 if (dump_opt['L']) 1732 return; 1733 1734 if (BP_GET_DEDUP(bp)) { 1735 ddt_t *ddt; 1736 ddt_entry_t *dde; 1737 1738 ddt = ddt_select(spa, bp); 1739 ddt_enter(ddt); 1740 dde = ddt_lookup(ddt, bp, B_FALSE); 1741 1742 if (dde == NULL) { 1743 refcnt = 0; 1744 } else { 1745 ddt_phys_t *ddp = ddt_phys_select(dde, bp); 1746 ddt_phys_decref(ddp); 1747 refcnt = ddp->ddp_refcnt; 1748 if (ddt_phys_total_refcnt(dde) == 0) 1749 ddt_remove(ddt, dde); 1750 } 1751 ddt_exit(ddt); 1752 } 1753 1754 VERIFY3U(zio_wait(zio_claim(NULL, spa, 1755 refcnt ? 0 : spa_first_txg(spa), 1756 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0); 1757 } 1758 1759 static int 1760 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 1761 const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg) 1762 { 1763 zdb_cb_t *zcb = arg; 1764 char blkbuf[BP_SPRINTF_LEN]; 1765 dmu_object_type_t type; 1766 boolean_t is_metadata; 1767 1768 if (bp == NULL) 1769 return (0); 1770 1771 type = BP_GET_TYPE(bp); 1772 1773 zdb_count_block(spa, zilog, zcb, bp, type); 1774 1775 is_metadata = (BP_GET_LEVEL(bp) != 0 || dmu_ot[type].ot_metadata); 1776 1777 if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) { 1778 int ioerr; 1779 size_t size = BP_GET_PSIZE(bp); 1780 void *data = malloc(size); 1781 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW; 1782 1783 /* If it's an intent log block, failure is expected. */ 1784 if (zb->zb_level == ZB_ZIL_LEVEL) 1785 flags |= ZIO_FLAG_SPECULATIVE; 1786 1787 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size, 1788 NULL, NULL, ZIO_PRIORITY_ASYNC_READ, flags, zb)); 1789 1790 free(data); 1791 1792 if (ioerr && !(flags & ZIO_FLAG_SPECULATIVE)) { 1793 zcb->zcb_haderrors = 1; 1794 zcb->zcb_errors[ioerr]++; 1795 1796 if (dump_opt['b'] >= 2) 1797 snprintf_blkptr(blkbuf, sizeof(blkbuf), bp); 1798 else 1799 blkbuf[0] = '\0'; 1800 1801 (void) printf("zdb_blkptr_cb: " 1802 "Got error %d reading " 1803 "<%llu, %llu, %lld, %llx> %s -- skipping\n", 1804 ioerr, 1805 (u_longlong_t)zb->zb_objset, 1806 (u_longlong_t)zb->zb_object, 1807 (u_longlong_t)zb->zb_level, 1808 (u_longlong_t)zb->zb_blkid, 1809 blkbuf); 1810 } 1811 } 1812 1813 zcb->zcb_readfails = 0; 1814 1815 if (dump_opt['b'] >= 4) { 1816 snprintf_blkptr(blkbuf, sizeof(blkbuf), bp); 1817 (void) printf("objset %llu object %llu " 1818 "level %lld offset 0x%llx %s\n", 1819 (u_longlong_t)zb->zb_objset, 1820 (u_longlong_t)zb->zb_object, 1821 (longlong_t)zb->zb_level, 1822 (u_longlong_t)blkid2offset(dnp, bp, zb), 1823 blkbuf); 1824 } 1825 1826 return (0); 1827 } 1828 1829 static void 1830 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size) 1831 { 1832 vdev_t *vd = sm->sm_ppd; 1833 1834 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 1835 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size); 1836 } 1837 1838 /* ARGSUSED */ 1839 static void 1840 zdb_space_map_load(space_map_t *sm) 1841 { 1842 } 1843 1844 static void 1845 zdb_space_map_unload(space_map_t *sm) 1846 { 1847 space_map_vacate(sm, zdb_leak, sm); 1848 } 1849 1850 /* ARGSUSED */ 1851 static void 1852 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size) 1853 { 1854 } 1855 1856 static space_map_ops_t zdb_space_map_ops = { 1857 zdb_space_map_load, 1858 zdb_space_map_unload, 1859 NULL, /* alloc */ 1860 zdb_space_map_claim, 1861 NULL, /* free */ 1862 NULL /* maxsize */ 1863 }; 1864 1865 static void 1866 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb) 1867 { 1868 ddt_bookmark_t ddb = { 0 }; 1869 ddt_entry_t dde; 1870 int error; 1871 1872 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) { 1873 blkptr_t blk; 1874 ddt_phys_t *ddp = dde.dde_phys; 1875 1876 if (ddb.ddb_class == DDT_CLASS_UNIQUE) 1877 return; 1878 1879 ASSERT(ddt_phys_total_refcnt(&dde) > 1); 1880 1881 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 1882 if (ddp->ddp_phys_birth == 0) 1883 continue; 1884 ddt_bp_create(ddb.ddb_checksum, 1885 &dde.dde_key, ddp, &blk); 1886 if (p == DDT_PHYS_DITTO) { 1887 zdb_count_block(spa, NULL, zcb, &blk, 1888 ZDB_OT_DITTO); 1889 } else { 1890 zcb->zcb_dedup_asize += 1891 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1); 1892 zcb->zcb_dedup_blocks++; 1893 } 1894 } 1895 if (!dump_opt['L']) { 1896 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum]; 1897 ddt_enter(ddt); 1898 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL); 1899 ddt_exit(ddt); 1900 } 1901 } 1902 1903 ASSERT(error == ENOENT); 1904 } 1905 1906 static void 1907 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb) 1908 { 1909 if (!dump_opt['L']) { 1910 vdev_t *rvd = spa->spa_root_vdev; 1911 for (int c = 0; c < rvd->vdev_children; c++) { 1912 vdev_t *vd = rvd->vdev_child[c]; 1913 for (int m = 0; m < vd->vdev_ms_count; m++) { 1914 metaslab_t *msp = vd->vdev_ms[m]; 1915 mutex_enter(&msp->ms_lock); 1916 space_map_unload(&msp->ms_map); 1917 VERIFY(space_map_load(&msp->ms_map, 1918 &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo, 1919 spa->spa_meta_objset) == 0); 1920 msp->ms_map.sm_ppd = vd; 1921 mutex_exit(&msp->ms_lock); 1922 } 1923 } 1924 } 1925 1926 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 1927 1928 zdb_ddt_leak_init(spa, zcb); 1929 1930 spa_config_exit(spa, SCL_CONFIG, FTAG); 1931 } 1932 1933 static void 1934 zdb_leak_fini(spa_t *spa) 1935 { 1936 if (!dump_opt['L']) { 1937 vdev_t *rvd = spa->spa_root_vdev; 1938 for (int c = 0; c < rvd->vdev_children; c++) { 1939 vdev_t *vd = rvd->vdev_child[c]; 1940 for (int m = 0; m < vd->vdev_ms_count; m++) { 1941 metaslab_t *msp = vd->vdev_ms[m]; 1942 mutex_enter(&msp->ms_lock); 1943 space_map_unload(&msp->ms_map); 1944 mutex_exit(&msp->ms_lock); 1945 } 1946 } 1947 } 1948 } 1949 1950 static int 1951 dump_block_stats(spa_t *spa) 1952 { 1953 zdb_cb_t zcb = { 0 }; 1954 zdb_blkstats_t *zb, *tzb; 1955 uint64_t norm_alloc, norm_space, total_alloc, total_found; 1956 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD; 1957 int leaks = 0; 1958 1959 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n", 1960 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "", 1961 (dump_opt['c'] == 1) ? "metadata " : "", 1962 dump_opt['c'] ? "checksums " : "", 1963 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "", 1964 !dump_opt['L'] ? "nothing leaked " : ""); 1965 1966 /* 1967 * Load all space maps as SM_ALLOC maps, then traverse the pool 1968 * claiming each block we discover. If the pool is perfectly 1969 * consistent, the space maps will be empty when we're done. 1970 * Anything left over is a leak; any block we can't claim (because 1971 * it's not part of any space map) is a double allocation, 1972 * reference to a freed block, or an unclaimed log block. 1973 */ 1974 zdb_leak_init(spa, &zcb); 1975 1976 /* 1977 * If there's a deferred-free bplist, process that first. 1978 */ 1979 if (spa->spa_deferred_bplist_obj != 0) { 1980 bplist_t *bpl = &spa->spa_deferred_bplist; 1981 blkptr_t blk; 1982 uint64_t itor = 0; 1983 1984 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset, 1985 spa->spa_deferred_bplist_obj)); 1986 1987 while (bplist_iterate(bpl, &itor, &blk) == 0) { 1988 if (dump_opt['b'] >= 4) { 1989 char blkbuf[BP_SPRINTF_LEN]; 1990 snprintf_blkptr(blkbuf, sizeof(blkbuf), &blk); 1991 (void) printf("[%s] %s\n", 1992 "deferred free", blkbuf); 1993 } 1994 zdb_count_block(spa, NULL, &zcb, &blk, ZDB_OT_DEFERRED); 1995 } 1996 1997 bplist_close(bpl); 1998 } 1999 2000 if (dump_opt['c'] > 1) 2001 flags |= TRAVERSE_PREFETCH_DATA; 2002 2003 zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb); 2004 2005 if (zcb.zcb_haderrors) { 2006 (void) printf("\nError counts:\n\n"); 2007 (void) printf("\t%5s %s\n", "errno", "count"); 2008 for (int e = 0; e < 256; e++) { 2009 if (zcb.zcb_errors[e] != 0) { 2010 (void) printf("\t%5d %llu\n", 2011 e, (u_longlong_t)zcb.zcb_errors[e]); 2012 } 2013 } 2014 } 2015 2016 /* 2017 * Report any leaked segments. 2018 */ 2019 zdb_leak_fini(spa); 2020 2021 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL]; 2022 2023 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 2024 norm_space = metaslab_class_get_space(spa_normal_class(spa)); 2025 2026 total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa)); 2027 total_found = tzb->zb_asize - zcb.zcb_dedup_asize; 2028 2029 if (total_found == total_alloc) { 2030 if (!dump_opt['L']) 2031 (void) printf("\n\tNo leaks (block sum matches space" 2032 " maps exactly)\n"); 2033 } else { 2034 (void) printf("block traversal size %llu != alloc %llu " 2035 "(%s %lld)\n", 2036 (u_longlong_t)total_found, 2037 (u_longlong_t)total_alloc, 2038 (dump_opt['L']) ? "unreachable" : "leaked", 2039 (longlong_t)(total_alloc - total_found)); 2040 leaks = 1; 2041 } 2042 2043 if (tzb->zb_count == 0) 2044 return (2); 2045 2046 (void) printf("\n"); 2047 (void) printf("\tbp count: %10llu\n", 2048 (u_longlong_t)tzb->zb_count); 2049 (void) printf("\tbp logical: %10llu avg: %6llu\n", 2050 (u_longlong_t)tzb->zb_lsize, 2051 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 2052 (void) printf("\tbp physical: %10llu avg:" 2053 " %6llu compression: %6.2f\n", 2054 (u_longlong_t)tzb->zb_psize, 2055 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 2056 (double)tzb->zb_lsize / tzb->zb_psize); 2057 (void) printf("\tbp allocated: %10llu avg:" 2058 " %6llu compression: %6.2f\n", 2059 (u_longlong_t)tzb->zb_asize, 2060 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 2061 (double)tzb->zb_lsize / tzb->zb_asize); 2062 (void) printf("\tbp deduped: %10llu ref>1:" 2063 " %6llu deduplication: %6.2f\n", 2064 (u_longlong_t)zcb.zcb_dedup_asize, 2065 (u_longlong_t)zcb.zcb_dedup_blocks, 2066 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0); 2067 (void) printf("\tSPA allocated: %10llu used: %5.2f%%\n", 2068 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space); 2069 2070 if (dump_opt['b'] >= 2) { 2071 int l, t, level; 2072 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 2073 "\t avg\t comp\t%%Total\tType\n"); 2074 2075 for (t = 0; t <= ZDB_OT_TOTAL; t++) { 2076 char csize[6], lsize[6], psize[6], asize[6], avg[6]; 2077 char *typename; 2078 2079 if (t < DMU_OT_NUMTYPES) 2080 typename = dmu_ot[t].ot_name; 2081 else 2082 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES]; 2083 2084 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 2085 (void) printf("%6s\t%5s\t%5s\t%5s" 2086 "\t%5s\t%5s\t%6s\t%s\n", 2087 "-", 2088 "-", 2089 "-", 2090 "-", 2091 "-", 2092 "-", 2093 "-", 2094 typename); 2095 continue; 2096 } 2097 2098 for (l = ZB_TOTAL - 1; l >= -1; l--) { 2099 level = (l == -1 ? ZB_TOTAL : l); 2100 zb = &zcb.zcb_type[level][t]; 2101 2102 if (zb->zb_asize == 0) 2103 continue; 2104 2105 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 2106 continue; 2107 2108 if (level == 0 && zb->zb_asize == 2109 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 2110 continue; 2111 2112 nicenum(zb->zb_count, csize, sizeof(csize)); 2113 nicenum(zb->zb_lsize, lsize, sizeof(lsize)); 2114 nicenum(zb->zb_psize, psize, sizeof(psize)); 2115 nicenum(zb->zb_asize, asize, sizeof(asize)); 2116 nicenum(zb->zb_asize / zb->zb_count, avg, sizeof(avg)); 2117 2118 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 2119 "\t%5.2f\t%6.2f\t", 2120 csize, lsize, psize, asize, avg, 2121 (double)zb->zb_lsize / zb->zb_psize, 2122 100.0 * zb->zb_asize / tzb->zb_asize); 2123 2124 if (level == ZB_TOTAL) 2125 (void) printf("%s\n", typename); 2126 else 2127 (void) printf(" L%d %s\n", 2128 level, typename); 2129 } 2130 } 2131 } 2132 2133 (void) printf("\n"); 2134 2135 if (leaks) 2136 return (2); 2137 2138 if (zcb.zcb_haderrors) 2139 return (3); 2140 2141 return (0); 2142 } 2143 2144 typedef struct zdb_ddt_entry { 2145 ddt_key_t zdde_key; 2146 uint64_t zdde_ref_blocks; 2147 uint64_t zdde_ref_lsize; 2148 uint64_t zdde_ref_psize; 2149 uint64_t zdde_ref_dsize; 2150 avl_node_t zdde_node; 2151 } zdb_ddt_entry_t; 2152 2153 /* ARGSUSED */ 2154 static int 2155 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2156 const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg) 2157 { 2158 avl_tree_t *t = arg; 2159 avl_index_t where; 2160 zdb_ddt_entry_t *zdde, zdde_search; 2161 2162 if (bp == NULL) 2163 return (0); 2164 2165 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) { 2166 (void) printf("traversing objset %llu, %llu objects, " 2167 "%lu blocks so far\n", 2168 (u_longlong_t)zb->zb_objset, 2169 (u_longlong_t)bp->blk_fill, 2170 avl_numnodes(t)); 2171 } 2172 2173 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF || 2174 BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) 2175 return (0); 2176 2177 ddt_key_fill(&zdde_search.zdde_key, bp); 2178 2179 zdde = avl_find(t, &zdde_search, &where); 2180 2181 if (zdde == NULL) { 2182 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL); 2183 zdde->zdde_key = zdde_search.zdde_key; 2184 avl_insert(t, zdde, where); 2185 } 2186 2187 zdde->zdde_ref_blocks += 1; 2188 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp); 2189 zdde->zdde_ref_psize += BP_GET_PSIZE(bp); 2190 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp); 2191 2192 return (0); 2193 } 2194 2195 static void 2196 dump_simulated_ddt(spa_t *spa) 2197 { 2198 avl_tree_t t; 2199 void *cookie = NULL; 2200 zdb_ddt_entry_t *zdde; 2201 ddt_histogram_t ddh_total = { 0 }; 2202 ddt_stat_t dds_total = { 0 }; 2203 2204 avl_create(&t, ddt_entry_compare, 2205 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node)); 2206 2207 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2208 2209 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA, 2210 zdb_ddt_add_cb, &t); 2211 2212 spa_config_exit(spa, SCL_CONFIG, FTAG); 2213 2214 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) { 2215 ddt_stat_t dds; 2216 uint64_t refcnt = zdde->zdde_ref_blocks; 2217 ASSERT(refcnt != 0); 2218 2219 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt; 2220 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt; 2221 dds.dds_psize = zdde->zdde_ref_psize / refcnt; 2222 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt; 2223 2224 dds.dds_ref_blocks = zdde->zdde_ref_blocks; 2225 dds.dds_ref_lsize = zdde->zdde_ref_lsize; 2226 dds.dds_ref_psize = zdde->zdde_ref_psize; 2227 dds.dds_ref_dsize = zdde->zdde_ref_dsize; 2228 2229 ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0); 2230 2231 umem_free(zdde, sizeof (*zdde)); 2232 } 2233 2234 avl_destroy(&t); 2235 2236 ddt_histogram_stat(&dds_total, &ddh_total); 2237 2238 (void) printf("Simulated DDT histogram:\n"); 2239 2240 zpool_dump_ddt(&dds_total, &ddh_total); 2241 2242 dump_dedup_ratio(&dds_total); 2243 } 2244 2245 static void 2246 dump_zpool(spa_t *spa) 2247 { 2248 dsl_pool_t *dp = spa_get_dsl(spa); 2249 int rc = 0; 2250 2251 if (dump_opt['S']) { 2252 dump_simulated_ddt(spa); 2253 return; 2254 } 2255 2256 if (!dump_opt['e'] && dump_opt['C'] > 1) { 2257 (void) printf("\nCached configuration:\n"); 2258 dump_nvlist(spa->spa_config, 8); 2259 } 2260 2261 if (dump_opt['C']) 2262 dump_config(spa); 2263 2264 if (dump_opt['u']) 2265 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n"); 2266 2267 if (dump_opt['D']) 2268 dump_all_ddts(spa); 2269 2270 if (dump_opt['d'] > 2 || dump_opt['m']) 2271 dump_metaslabs(spa); 2272 2273 if (dump_opt['d'] || dump_opt['i']) { 2274 dump_dir(dp->dp_meta_objset); 2275 if (dump_opt['d'] >= 3) { 2276 dump_bplist(dp->dp_meta_objset, 2277 spa->spa_deferred_bplist_obj, "Deferred frees"); 2278 dump_dtl(spa->spa_root_vdev, 0); 2279 } 2280 (void) dmu_objset_find(spa_name(spa), dump_one_dir, 2281 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 2282 } 2283 if (dump_opt['b'] || dump_opt['c']) 2284 rc = dump_block_stats(spa); 2285 2286 if (dump_opt['s']) 2287 show_pool_stats(spa); 2288 2289 if (dump_opt['h']) 2290 dump_history(spa); 2291 2292 if (rc != 0) 2293 exit(rc); 2294 } 2295 2296 #define ZDB_FLAG_CHECKSUM 0x0001 2297 #define ZDB_FLAG_DECOMPRESS 0x0002 2298 #define ZDB_FLAG_BSWAP 0x0004 2299 #define ZDB_FLAG_GBH 0x0008 2300 #define ZDB_FLAG_INDIRECT 0x0010 2301 #define ZDB_FLAG_PHYS 0x0020 2302 #define ZDB_FLAG_RAW 0x0040 2303 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 2304 2305 int flagbits[256]; 2306 2307 static void 2308 zdb_print_blkptr(blkptr_t *bp, int flags) 2309 { 2310 char blkbuf[BP_SPRINTF_LEN]; 2311 2312 if (flags & ZDB_FLAG_BSWAP) 2313 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 2314 2315 snprintf_blkptr(blkbuf, sizeof(blkbuf), bp); 2316 (void) printf("%s\n", blkbuf); 2317 } 2318 2319 static void 2320 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 2321 { 2322 int i; 2323 2324 for (i = 0; i < nbps; i++) 2325 zdb_print_blkptr(&bp[i], flags); 2326 } 2327 2328 static void 2329 zdb_dump_gbh(void *buf, int flags) 2330 { 2331 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 2332 } 2333 2334 static void 2335 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 2336 { 2337 if (flags & ZDB_FLAG_BSWAP) 2338 byteswap_uint64_array(buf, size); 2339 (void) write(1, buf, size); 2340 } 2341 2342 static void 2343 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 2344 { 2345 uint64_t *d = (uint64_t *)buf; 2346 int nwords = size / sizeof (uint64_t); 2347 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 2348 int i, j; 2349 char *hdr, *c; 2350 2351 2352 if (do_bswap) 2353 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 2354 else 2355 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 2356 2357 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 2358 2359 for (i = 0; i < nwords; i += 2) { 2360 (void) printf("%06llx: %016llx %016llx ", 2361 (u_longlong_t)(i * sizeof (uint64_t)), 2362 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 2363 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 2364 2365 c = (char *)&d[i]; 2366 for (j = 0; j < 2 * sizeof (uint64_t); j++) 2367 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 2368 (void) printf("\n"); 2369 } 2370 } 2371 2372 /* 2373 * There are two acceptable formats: 2374 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 2375 * child[.child]* - For example: 0.1.1 2376 * 2377 * The second form can be used to specify arbitrary vdevs anywhere 2378 * in the heirarchy. For example, in a pool with a mirror of 2379 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 2380 */ 2381 static vdev_t * 2382 zdb_vdev_lookup(vdev_t *vdev, char *path) 2383 { 2384 char *s, *p, *q; 2385 int i; 2386 2387 if (vdev == NULL) 2388 return (NULL); 2389 2390 /* First, assume the x.x.x.x format */ 2391 i = (int)strtoul(path, &s, 10); 2392 if (s == path || (s && *s != '.' && *s != '\0')) 2393 goto name; 2394 if (i < 0 || i >= vdev->vdev_children) 2395 return (NULL); 2396 2397 vdev = vdev->vdev_child[i]; 2398 if (*s == '\0') 2399 return (vdev); 2400 return (zdb_vdev_lookup(vdev, s+1)); 2401 2402 name: 2403 for (i = 0; i < vdev->vdev_children; i++) { 2404 vdev_t *vc = vdev->vdev_child[i]; 2405 2406 if (vc->vdev_path == NULL) { 2407 vc = zdb_vdev_lookup(vc, path); 2408 if (vc == NULL) 2409 continue; 2410 else 2411 return (vc); 2412 } 2413 2414 p = strrchr(vc->vdev_path, '/'); 2415 p = p ? p + 1 : vc->vdev_path; 2416 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 2417 2418 if (strcmp(vc->vdev_path, path) == 0) 2419 return (vc); 2420 if (strcmp(p, path) == 0) 2421 return (vc); 2422 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 2423 return (vc); 2424 } 2425 2426 return (NULL); 2427 } 2428 2429 /* 2430 * Read a block from a pool and print it out. The syntax of the 2431 * block descriptor is: 2432 * 2433 * pool:vdev_specifier:offset:size[:flags] 2434 * 2435 * pool - The name of the pool you wish to read from 2436 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 2437 * offset - offset, in hex, in bytes 2438 * size - Amount of data to read, in hex, in bytes 2439 * flags - A string of characters specifying options 2440 * b: Decode a blkptr at given offset within block 2441 * *c: Calculate and display checksums 2442 * d: Decompress data before dumping 2443 * e: Byteswap data before dumping 2444 * g: Display data as a gang block header 2445 * i: Display as an indirect block 2446 * p: Do I/O to physical offset 2447 * r: Dump raw data to stdout 2448 * 2449 * * = not yet implemented 2450 */ 2451 static void 2452 zdb_read_block(char *thing, spa_t *spa) 2453 { 2454 blkptr_t blk, *bp = &blk; 2455 dva_t *dva = bp->blk_dva; 2456 int flags = 0; 2457 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0; 2458 zio_t *zio; 2459 vdev_t *vd; 2460 void *pbuf, *lbuf, *buf; 2461 char *s, *p, *dup, *vdev, *flagstr; 2462 int i, error; 2463 2464 dup = strdup(thing); 2465 s = strtok(dup, ":"); 2466 vdev = s ? s : ""; 2467 s = strtok(NULL, ":"); 2468 offset = strtoull(s ? s : "", NULL, 16); 2469 s = strtok(NULL, ":"); 2470 size = strtoull(s ? s : "", NULL, 16); 2471 s = strtok(NULL, ":"); 2472 flagstr = s ? s : ""; 2473 2474 s = NULL; 2475 if (size == 0) 2476 s = "size must not be zero"; 2477 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 2478 s = "size must be a multiple of sector size"; 2479 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 2480 s = "offset must be a multiple of sector size"; 2481 if (s) { 2482 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 2483 free(dup); 2484 return; 2485 } 2486 2487 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 2488 for (i = 0; flagstr[i]; i++) { 2489 int bit = flagbits[(uchar_t)flagstr[i]]; 2490 2491 if (bit == 0) { 2492 (void) printf("***Invalid flag: %c\n", 2493 flagstr[i]); 2494 continue; 2495 } 2496 flags |= bit; 2497 2498 /* If it's not something with an argument, keep going */ 2499 if ((bit & (ZDB_FLAG_CHECKSUM | 2500 ZDB_FLAG_PRINT_BLKPTR)) == 0) 2501 continue; 2502 2503 p = &flagstr[i + 1]; 2504 if (bit == ZDB_FLAG_PRINT_BLKPTR) 2505 blkptr_offset = strtoull(p, &p, 16); 2506 if (*p != ':' && *p != '\0') { 2507 (void) printf("***Invalid flag arg: '%s'\n", s); 2508 free(dup); 2509 return; 2510 } 2511 } 2512 } 2513 2514 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 2515 if (vd == NULL) { 2516 (void) printf("***Invalid vdev: %s\n", vdev); 2517 free(dup); 2518 return; 2519 } else { 2520 if (vd->vdev_path) 2521 (void) fprintf(stderr, "Found vdev: %s\n", 2522 vd->vdev_path); 2523 else 2524 (void) fprintf(stderr, "Found vdev type: %s\n", 2525 vd->vdev_ops->vdev_op_type); 2526 } 2527 2528 psize = size; 2529 lsize = size; 2530 2531 pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 2532 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 2533 2534 BP_ZERO(bp); 2535 2536 DVA_SET_VDEV(&dva[0], vd->vdev_id); 2537 DVA_SET_OFFSET(&dva[0], offset); 2538 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH)); 2539 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize)); 2540 2541 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL); 2542 2543 BP_SET_LSIZE(bp, lsize); 2544 BP_SET_PSIZE(bp, psize); 2545 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF); 2546 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF); 2547 BP_SET_TYPE(bp, DMU_OT_NONE); 2548 BP_SET_LEVEL(bp, 0); 2549 BP_SET_DEDUP(bp, 0); 2550 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER); 2551 2552 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 2553 zio = zio_root(spa, NULL, NULL, 0); 2554 2555 if (vd == vd->vdev_top) { 2556 /* 2557 * Treat this as a normal block read. 2558 */ 2559 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL, 2560 ZIO_PRIORITY_SYNC_READ, 2561 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL)); 2562 } else { 2563 /* 2564 * Treat this as a vdev child I/O. 2565 */ 2566 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize, 2567 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, 2568 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 2569 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | 2570 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL)); 2571 } 2572 2573 error = zio_wait(zio); 2574 spa_config_exit(spa, SCL_STATE, FTAG); 2575 2576 if (error) { 2577 (void) printf("Read of %s failed, error: %d\n", thing, error); 2578 goto out; 2579 } 2580 2581 if (flags & ZDB_FLAG_DECOMPRESS) { 2582 /* 2583 * We don't know how the data was compressed, so just try 2584 * every decompress function at every inflated blocksize. 2585 */ 2586 enum zio_compress c; 2587 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 2588 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 2589 2590 bcopy(pbuf, pbuf2, psize); 2591 2592 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize, 2593 SPA_MAXBLOCKSIZE - psize) == 0); 2594 2595 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize, 2596 SPA_MAXBLOCKSIZE - psize) == 0); 2597 2598 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize; 2599 lsize -= SPA_MINBLOCKSIZE) { 2600 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) { 2601 if (zio_decompress_data(c, pbuf, lbuf, 2602 psize, lsize) == 0 && 2603 zio_decompress_data(c, pbuf2, lbuf2, 2604 psize, lsize) == 0 && 2605 bcmp(lbuf, lbuf2, lsize) == 0) 2606 break; 2607 } 2608 if (c != ZIO_COMPRESS_FUNCTIONS) 2609 break; 2610 lsize -= SPA_MINBLOCKSIZE; 2611 } 2612 2613 umem_free(pbuf2, SPA_MAXBLOCKSIZE); 2614 umem_free(lbuf2, SPA_MAXBLOCKSIZE); 2615 2616 if (lsize <= psize) { 2617 (void) printf("Decompress of %s failed\n", thing); 2618 goto out; 2619 } 2620 buf = lbuf; 2621 size = lsize; 2622 } else { 2623 buf = pbuf; 2624 size = psize; 2625 } 2626 2627 if (flags & ZDB_FLAG_PRINT_BLKPTR) 2628 zdb_print_blkptr((blkptr_t *)(void *) 2629 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 2630 else if (flags & ZDB_FLAG_RAW) 2631 zdb_dump_block_raw(buf, size, flags); 2632 else if (flags & ZDB_FLAG_INDIRECT) 2633 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 2634 flags); 2635 else if (flags & ZDB_FLAG_GBH) 2636 zdb_dump_gbh(buf, flags); 2637 else 2638 zdb_dump_block(thing, buf, size, flags); 2639 2640 out: 2641 umem_free(pbuf, SPA_MAXBLOCKSIZE); 2642 umem_free(lbuf, SPA_MAXBLOCKSIZE); 2643 free(dup); 2644 } 2645 2646 static boolean_t 2647 pool_match(nvlist_t *cfg, char *tgt) 2648 { 2649 uint64_t v, guid = strtoull(tgt, NULL, 0); 2650 char *s; 2651 2652 if (guid != 0) { 2653 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0) 2654 return (v == guid); 2655 } else { 2656 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0) 2657 return (strcmp(s, tgt) == 0); 2658 } 2659 return (B_FALSE); 2660 } 2661 2662 static char * 2663 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv) 2664 { 2665 nvlist_t *pools; 2666 nvlist_t *match = NULL; 2667 char *name = NULL; 2668 char *sepp = NULL; 2669 char sep; 2670 int count = 0; 2671 importargs_t args = { 0 }; 2672 2673 args.paths = dirc; 2674 args.path = dirv; 2675 args.can_be_active = B_TRUE; 2676 2677 if ((sepp = strpbrk(*target, "/@")) != NULL) { 2678 sep = *sepp; 2679 *sepp = '\0'; 2680 } 2681 2682 pools = zpool_search_import(g_zfs, &args); 2683 2684 if (pools != NULL) { 2685 nvpair_t *elem = NULL; 2686 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) { 2687 verify(nvpair_value_nvlist(elem, configp) == 0); 2688 if (pool_match(*configp, *target)) { 2689 count++; 2690 if (match != NULL) { 2691 /* print previously found config */ 2692 if (name != NULL) { 2693 (void) printf("%s\n", name); 2694 dump_nvlist(match, 8); 2695 name = NULL; 2696 } 2697 (void) printf("%s\n", 2698 nvpair_name(elem)); 2699 dump_nvlist(*configp, 8); 2700 } else { 2701 match = *configp; 2702 name = nvpair_name(elem); 2703 } 2704 } 2705 } 2706 } 2707 if (count > 1) 2708 (void) fatal("\tMatched %d pools - use pool GUID " 2709 "instead of pool name or \n" 2710 "\tpool name part of a dataset name to select pool", count); 2711 2712 if (sepp) 2713 *sepp = sep; 2714 /* 2715 * If pool GUID was specified for pool id, replace it with pool name 2716 */ 2717 if (name && (strstr(*target, name) != *target)) { 2718 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0); 2719 2720 *target = umem_alloc(sz, UMEM_NOFAIL); 2721 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : ""); 2722 } 2723 2724 *configp = name ? match : NULL; 2725 2726 return (name); 2727 } 2728 2729 int 2730 main(int argc, char **argv) 2731 { 2732 int i, c; 2733 struct rlimit rl = { 1024, 1024 }; 2734 spa_t *spa = NULL; 2735 objset_t *os = NULL; 2736 int dump_all = 1; 2737 int verbose = 0; 2738 int error = 0; 2739 char **searchdirs = NULL; 2740 int nsearch = 0; 2741 char *target; 2742 nvlist_t *policy = NULL; 2743 uint64_t max_txg = UINT64_MAX; 2744 int rewind = ZPOOL_NEVER_REWIND; 2745 2746 (void) setrlimit(RLIMIT_NOFILE, &rl); 2747 (void) enable_extended_FILE_stdio(-1, -1); 2748 2749 dprintf_setup(&argc, argv); 2750 2751 while ((c = getopt(argc, argv, "bcdhilmsuCDRSAFLXevp:t:U:")) != -1) { 2752 switch (c) { 2753 case 'b': 2754 case 'c': 2755 case 'd': 2756 case 'h': 2757 case 'i': 2758 case 'l': 2759 case 'm': 2760 case 's': 2761 case 'u': 2762 case 'C': 2763 case 'D': 2764 case 'R': 2765 case 'S': 2766 dump_opt[c]++; 2767 dump_all = 0; 2768 break; 2769 case 'A': 2770 case 'F': 2771 case 'L': 2772 case 'X': 2773 case 'e': 2774 dump_opt[c]++; 2775 break; 2776 case 'v': 2777 verbose++; 2778 break; 2779 case 'p': 2780 if (searchdirs == NULL) { 2781 searchdirs = umem_alloc(sizeof (char *), 2782 UMEM_NOFAIL); 2783 } else { 2784 char **tmp = umem_alloc((nsearch + 1) * 2785 sizeof (char *), UMEM_NOFAIL); 2786 bcopy(searchdirs, tmp, nsearch * 2787 sizeof (char *)); 2788 umem_free(searchdirs, 2789 nsearch * sizeof (char *)); 2790 searchdirs = tmp; 2791 } 2792 searchdirs[nsearch++] = optarg; 2793 break; 2794 case 't': 2795 max_txg = strtoull(optarg, NULL, 0); 2796 if (max_txg < TXG_INITIAL) { 2797 (void) fprintf(stderr, "incorrect txg " 2798 "specified: %s\n", optarg); 2799 usage(); 2800 } 2801 break; 2802 case 'U': 2803 spa_config_path = optarg; 2804 break; 2805 default: 2806 usage(); 2807 break; 2808 } 2809 } 2810 2811 if (!dump_opt['e'] && searchdirs != NULL) { 2812 (void) fprintf(stderr, "-p option requires use of -e\n"); 2813 usage(); 2814 } 2815 2816 kernel_init(FREAD); 2817 g_zfs = libzfs_init(); 2818 ASSERT(g_zfs != NULL); 2819 2820 if (dump_all) 2821 verbose = MAX(verbose, 1); 2822 2823 for (c = 0; c < 256; c++) { 2824 if (dump_all && !strchr("elAFLRSX", c)) 2825 dump_opt[c] = 1; 2826 if (dump_opt[c]) 2827 dump_opt[c] += verbose; 2828 } 2829 2830 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2); 2831 zfs_recover = (dump_opt['A'] > 1); 2832 2833 argc -= optind; 2834 argv += optind; 2835 2836 if (argc < 2 && dump_opt['R']) 2837 usage(); 2838 if (argc < 1) { 2839 if (!dump_opt['e'] && dump_opt['C']) { 2840 dump_cachefile(spa_config_path); 2841 return (0); 2842 } 2843 usage(); 2844 } 2845 2846 if (dump_opt['l']) { 2847 dump_label(argv[0]); 2848 return (0); 2849 } 2850 2851 if (dump_opt['X'] || dump_opt['F']) 2852 rewind = ZPOOL_DO_REWIND | 2853 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0); 2854 2855 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 || 2856 nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 || 2857 nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0) 2858 fatal("internal error: %s", strerror(ENOMEM)); 2859 2860 error = 0; 2861 target = argv[0]; 2862 2863 if (dump_opt['e']) { 2864 nvlist_t *cfg = NULL; 2865 char *name = find_zpool(&target, &cfg, nsearch, searchdirs); 2866 2867 error = ENOENT; 2868 if (name) { 2869 if (dump_opt['C'] > 1) { 2870 (void) printf("\nConfiguration for import:\n"); 2871 dump_nvlist(cfg, 8); 2872 } 2873 if (nvlist_add_nvlist(cfg, 2874 ZPOOL_REWIND_POLICY, policy) != 0) { 2875 fatal("can't open '%s': %s", 2876 target, strerror(ENOMEM)); 2877 } 2878 if ((error = spa_import(name, cfg, NULL)) != 0) 2879 error = spa_import_verbatim(name, cfg, NULL); 2880 } 2881 } 2882 2883 if (error == 0) { 2884 if (strpbrk(target, "/@") == NULL || dump_opt['R']) { 2885 error = spa_open_rewind(target, &spa, FTAG, policy, 2886 NULL); 2887 if (error) { 2888 /* 2889 * If we're missing the log device then 2890 * try opening the pool after clearing the 2891 * log state. 2892 */ 2893 mutex_enter(&spa_namespace_lock); 2894 if ((spa = spa_lookup(target)) != NULL && 2895 spa->spa_log_state == SPA_LOG_MISSING) { 2896 spa->spa_log_state = SPA_LOG_CLEAR; 2897 error = 0; 2898 } 2899 mutex_exit(&spa_namespace_lock); 2900 2901 if (!error) { 2902 error = spa_open_rewind(target, &spa, 2903 FTAG, policy, NULL); 2904 } 2905 } 2906 } else { 2907 error = dmu_objset_own(target, DMU_OST_ANY, 2908 B_TRUE, FTAG, &os); 2909 } 2910 } 2911 nvlist_free(policy); 2912 2913 if (error) 2914 fatal("can't open '%s': %s", target, strerror(error)); 2915 2916 argv++; 2917 argc--; 2918 if (!dump_opt['R']) { 2919 if (argc > 0) { 2920 zopt_objects = argc; 2921 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 2922 for (i = 0; i < zopt_objects; i++) { 2923 errno = 0; 2924 zopt_object[i] = strtoull(argv[i], NULL, 0); 2925 if (zopt_object[i] == 0 && errno != 0) 2926 fatal("bad number %s: %s", 2927 argv[i], strerror(errno)); 2928 } 2929 } 2930 (os != NULL) ? dump_dir(os) : dump_zpool(spa); 2931 } else { 2932 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 2933 flagbits['c'] = ZDB_FLAG_CHECKSUM; 2934 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 2935 flagbits['e'] = ZDB_FLAG_BSWAP; 2936 flagbits['g'] = ZDB_FLAG_GBH; 2937 flagbits['i'] = ZDB_FLAG_INDIRECT; 2938 flagbits['p'] = ZDB_FLAG_PHYS; 2939 flagbits['r'] = ZDB_FLAG_RAW; 2940 2941 for (i = 0; i < argc; i++) 2942 zdb_read_block(argv[i], spa); 2943 } 2944 2945 (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG); 2946 2947 fuid_table_destroy(); 2948 2949 libzfs_fini(g_zfs); 2950 kernel_fini(); 2951 2952 return (0); 2953 } 2954