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 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <stdio.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/vdev.h> 40 #include <sys/vdev_impl.h> 41 #include <sys/metaslab_impl.h> 42 #include <sys/dmu_objset.h> 43 #include <sys/dsl_dir.h> 44 #include <sys/dsl_dataset.h> 45 #include <sys/dsl_pool.h> 46 #include <sys/dbuf.h> 47 #include <sys/zil.h> 48 #include <sys/zil_impl.h> 49 #include <sys/stat.h> 50 #include <sys/resource.h> 51 #include <sys/dmu_traverse.h> 52 #include <sys/zio_checksum.h> 53 #include <sys/zio_compress.h> 54 #undef ZFS_MAXNAMELEN 55 #undef verify 56 #include <libzfs.h> 57 58 const char cmdname[] = "zdb"; 59 uint8_t dump_opt[256]; 60 61 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); 62 63 extern void dump_intent_log(zilog_t *); 64 uint64_t *zopt_object = NULL; 65 int zopt_objects = 0; 66 int zdb_advance = ADVANCE_PRE; 67 zbookmark_t zdb_noread = { 0, 0, ZB_NO_LEVEL, 0 }; 68 libzfs_handle_t *g_zfs; 69 70 /* 71 * These libumem hooks provide a reasonable set of defaults for the allocator's 72 * debugging facilities. 73 */ 74 const char * 75 _umem_debug_init() 76 { 77 return ("default,verbose"); /* $UMEM_DEBUG setting */ 78 } 79 80 const char * 81 _umem_logging_init(void) 82 { 83 return ("fail,contents"); /* $UMEM_LOGGING setting */ 84 } 85 86 static void 87 usage(void) 88 { 89 (void) fprintf(stderr, 90 "Usage: %s [-udibcsvLUe] [-O order] [-B os:obj:level:blkid] " 91 "dataset [object...]\n" 92 " %s -C [pool]\n" 93 " %s -l dev\n" 94 " %s -R vdev:offset:size:flags\n" 95 " %s [-p path_to_vdev_dir]\n", 96 cmdname, cmdname, cmdname, cmdname, cmdname); 97 98 (void) fprintf(stderr, " -u uberblock\n"); 99 (void) fprintf(stderr, " -d datasets\n"); 100 (void) fprintf(stderr, " -C cached pool configuration\n"); 101 (void) fprintf(stderr, " -i intent logs\n"); 102 (void) fprintf(stderr, " -b block statistics\n"); 103 (void) fprintf(stderr, " -c checksum all data blocks\n"); 104 (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); 105 (void) fprintf(stderr, " -v verbose (applies to all others)\n"); 106 (void) fprintf(stderr, " -l dump label contents\n"); 107 (void) fprintf(stderr, " -L live pool (allows some errors)\n"); 108 (void) fprintf(stderr, " -O [!]<pre|post|prune|data|holes> " 109 "visitation order\n"); 110 (void) fprintf(stderr, " -U use zpool.cache in /tmp\n"); 111 (void) fprintf(stderr, " -B objset:object:level:blkid -- " 112 "simulate bad block\n"); 113 (void) fprintf(stderr, " -R read and display block from a" 114 "device\n"); 115 (void) fprintf(stderr, " -e Pool is exported/destroyed\n"); 116 (void) fprintf(stderr, " -p <Path to vdev dir> (use with -e)\n"); 117 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " 118 "to make only that option verbose\n"); 119 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); 120 exit(1); 121 } 122 123 static void 124 fatal(const char *fmt, ...) 125 { 126 va_list ap; 127 128 va_start(ap, fmt); 129 (void) fprintf(stderr, "%s: ", cmdname); 130 (void) vfprintf(stderr, fmt, ap); 131 va_end(ap); 132 (void) fprintf(stderr, "\n"); 133 134 exit(1); 135 } 136 137 static void 138 dump_nvlist(nvlist_t *list, int indent) 139 { 140 nvpair_t *elem = NULL; 141 142 while ((elem = nvlist_next_nvpair(list, elem)) != NULL) { 143 switch (nvpair_type(elem)) { 144 case DATA_TYPE_STRING: 145 { 146 char *value; 147 148 VERIFY(nvpair_value_string(elem, &value) == 0); 149 (void) printf("%*s%s='%s'\n", indent, "", 150 nvpair_name(elem), value); 151 } 152 break; 153 154 case DATA_TYPE_UINT64: 155 { 156 uint64_t value; 157 158 VERIFY(nvpair_value_uint64(elem, &value) == 0); 159 (void) printf("%*s%s=%llu\n", indent, "", 160 nvpair_name(elem), (u_longlong_t)value); 161 } 162 break; 163 164 case DATA_TYPE_NVLIST: 165 { 166 nvlist_t *value; 167 168 VERIFY(nvpair_value_nvlist(elem, &value) == 0); 169 (void) printf("%*s%s\n", indent, "", 170 nvpair_name(elem)); 171 dump_nvlist(value, indent + 4); 172 } 173 break; 174 175 case DATA_TYPE_NVLIST_ARRAY: 176 { 177 nvlist_t **value; 178 uint_t c, count; 179 180 VERIFY(nvpair_value_nvlist_array(elem, &value, 181 &count) == 0); 182 183 for (c = 0; c < count; c++) { 184 (void) printf("%*s%s[%u]\n", indent, "", 185 nvpair_name(elem), c); 186 dump_nvlist(value[c], indent + 8); 187 } 188 } 189 break; 190 191 default: 192 193 (void) printf("bad config type %d for %s\n", 194 nvpair_type(elem), nvpair_name(elem)); 195 } 196 } 197 } 198 199 /* ARGSUSED */ 200 static void 201 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) 202 { 203 nvlist_t *nv; 204 size_t nvsize = *(uint64_t *)data; 205 char *packed = umem_alloc(nvsize, UMEM_NOFAIL); 206 207 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed)); 208 209 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); 210 211 umem_free(packed, nvsize); 212 213 dump_nvlist(nv, 8); 214 215 nvlist_free(nv); 216 } 217 218 const char dump_zap_stars[] = "****************************************"; 219 const int dump_zap_width = sizeof (dump_zap_stars) - 1; 220 221 static void 222 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE]) 223 { 224 int i; 225 int minidx = ZAP_HISTOGRAM_SIZE - 1; 226 int maxidx = 0; 227 uint64_t max = 0; 228 229 for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) { 230 if (histo[i] > max) 231 max = histo[i]; 232 if (histo[i] > 0 && i > maxidx) 233 maxidx = i; 234 if (histo[i] > 0 && i < minidx) 235 minidx = i; 236 } 237 238 if (max < dump_zap_width) 239 max = dump_zap_width; 240 241 for (i = minidx; i <= maxidx; i++) 242 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i], 243 &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]); 244 } 245 246 static void 247 dump_zap_stats(objset_t *os, uint64_t object) 248 { 249 int error; 250 zap_stats_t zs; 251 252 error = zap_get_stats(os, object, &zs); 253 if (error) 254 return; 255 256 if (zs.zs_ptrtbl_len == 0) { 257 ASSERT(zs.zs_num_blocks == 1); 258 (void) printf("\tmicrozap: %llu bytes, %llu entries\n", 259 (u_longlong_t)zs.zs_blocksize, 260 (u_longlong_t)zs.zs_num_entries); 261 return; 262 } 263 264 (void) printf("\tFat ZAP stats:\n"); 265 266 (void) printf("\t\tPointer table:\n"); 267 (void) printf("\t\t\t%llu elements\n", 268 (u_longlong_t)zs.zs_ptrtbl_len); 269 (void) printf("\t\t\tzt_blk: %llu\n", 270 (u_longlong_t)zs.zs_ptrtbl_zt_blk); 271 (void) printf("\t\t\tzt_numblks: %llu\n", 272 (u_longlong_t)zs.zs_ptrtbl_zt_numblks); 273 (void) printf("\t\t\tzt_shift: %llu\n", 274 (u_longlong_t)zs.zs_ptrtbl_zt_shift); 275 (void) printf("\t\t\tzt_blks_copied: %llu\n", 276 (u_longlong_t)zs.zs_ptrtbl_blks_copied); 277 (void) printf("\t\t\tzt_nextblk: %llu\n", 278 (u_longlong_t)zs.zs_ptrtbl_nextblk); 279 280 (void) printf("\t\tZAP entries: %llu\n", 281 (u_longlong_t)zs.zs_num_entries); 282 (void) printf("\t\tLeaf blocks: %llu\n", 283 (u_longlong_t)zs.zs_num_leafs); 284 (void) printf("\t\tTotal blocks: %llu\n", 285 (u_longlong_t)zs.zs_num_blocks); 286 (void) printf("\t\tzap_block_type: 0x%llx\n", 287 (u_longlong_t)zs.zs_block_type); 288 (void) printf("\t\tzap_magic: 0x%llx\n", 289 (u_longlong_t)zs.zs_magic); 290 (void) printf("\t\tzap_salt: 0x%llx\n", 291 (u_longlong_t)zs.zs_salt); 292 293 (void) printf("\t\tLeafs with 2^n pointers:\n"); 294 dump_zap_histogram(zs.zs_leafs_with_2n_pointers); 295 296 (void) printf("\t\tBlocks with n*5 entries:\n"); 297 dump_zap_histogram(zs.zs_blocks_with_n5_entries); 298 299 (void) printf("\t\tBlocks n/10 full:\n"); 300 dump_zap_histogram(zs.zs_blocks_n_tenths_full); 301 302 (void) printf("\t\tEntries with n chunks:\n"); 303 dump_zap_histogram(zs.zs_entries_using_n_chunks); 304 305 (void) printf("\t\tBuckets with n entries:\n"); 306 dump_zap_histogram(zs.zs_buckets_with_n_entries); 307 } 308 309 /*ARGSUSED*/ 310 static void 311 dump_none(objset_t *os, uint64_t object, void *data, size_t size) 312 { 313 } 314 315 /*ARGSUSED*/ 316 void 317 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) 318 { 319 } 320 321 /*ARGSUSED*/ 322 static void 323 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) 324 { 325 } 326 327 /*ARGSUSED*/ 328 static void 329 dump_zap(objset_t *os, uint64_t object, void *data, size_t size) 330 { 331 zap_cursor_t zc; 332 zap_attribute_t attr; 333 void *prop; 334 int i; 335 336 dump_zap_stats(os, object); 337 (void) printf("\n"); 338 339 for (zap_cursor_init(&zc, os, object); 340 zap_cursor_retrieve(&zc, &attr) == 0; 341 zap_cursor_advance(&zc)) { 342 (void) printf("\t\t%s = ", attr.za_name); 343 if (attr.za_num_integers == 0) { 344 (void) printf("\n"); 345 continue; 346 } 347 prop = umem_zalloc(attr.za_num_integers * 348 attr.za_integer_length, UMEM_NOFAIL); 349 (void) zap_lookup(os, object, attr.za_name, 350 attr.za_integer_length, attr.za_num_integers, prop); 351 if (attr.za_integer_length == 1) { 352 (void) printf("%s", (char *)prop); 353 } else { 354 for (i = 0; i < attr.za_num_integers; i++) { 355 switch (attr.za_integer_length) { 356 case 2: 357 (void) printf("%u ", 358 ((uint16_t *)prop)[i]); 359 break; 360 case 4: 361 (void) printf("%u ", 362 ((uint32_t *)prop)[i]); 363 break; 364 case 8: 365 (void) printf("%lld ", 366 (u_longlong_t)((int64_t *)prop)[i]); 367 break; 368 } 369 } 370 } 371 (void) printf("\n"); 372 umem_free(prop, attr.za_num_integers * attr.za_integer_length); 373 } 374 zap_cursor_fini(&zc); 375 } 376 377 /*ARGSUSED*/ 378 static void 379 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size) 380 { 381 zap_cursor_t zc; 382 zap_attribute_t attr; 383 const char *typenames[] = { 384 /* 0 */ "not specified", 385 /* 1 */ "FIFO", 386 /* 2 */ "Character Device", 387 /* 3 */ "3 (invalid)", 388 /* 4 */ "Directory", 389 /* 5 */ "5 (invalid)", 390 /* 6 */ "Block Device", 391 /* 7 */ "7 (invalid)", 392 /* 8 */ "Regular File", 393 /* 9 */ "9 (invalid)", 394 /* 10 */ "Symbolic Link", 395 /* 11 */ "11 (invalid)", 396 /* 12 */ "Socket", 397 /* 13 */ "Door", 398 /* 14 */ "Event Port", 399 /* 15 */ "15 (invalid)", 400 }; 401 402 dump_zap_stats(os, object); 403 (void) printf("\n"); 404 405 for (zap_cursor_init(&zc, os, object); 406 zap_cursor_retrieve(&zc, &attr) == 0; 407 zap_cursor_advance(&zc)) { 408 (void) printf("\t\t%s = %lld (type: %s)\n", 409 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer), 410 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]); 411 } 412 zap_cursor_fini(&zc); 413 } 414 415 static void 416 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm) 417 { 418 uint64_t alloc, offset, entry; 419 uint8_t mapshift = sm->sm_shift; 420 uint64_t mapstart = sm->sm_start; 421 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID", 422 "INVALID", "INVALID", "INVALID", "INVALID" }; 423 424 if (smo->smo_object == 0) 425 return; 426 427 /* 428 * Print out the freelist entries in both encoded and decoded form. 429 */ 430 alloc = 0; 431 for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) { 432 VERIFY(0 == dmu_read(os, smo->smo_object, offset, 433 sizeof (entry), &entry)); 434 if (SM_DEBUG_DECODE(entry)) { 435 (void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n", 436 (u_longlong_t)(offset / sizeof (entry)), 437 ddata[SM_DEBUG_ACTION_DECODE(entry)], 438 (u_longlong_t)SM_DEBUG_TXG_DECODE(entry), 439 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry)); 440 } else { 441 (void) printf("\t\t[%4llu] %c range:" 442 " %08llx-%08llx size: %06llx\n", 443 (u_longlong_t)(offset / sizeof (entry)), 444 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 445 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 446 mapshift) + mapstart), 447 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 448 mapshift) + mapstart + (SM_RUN_DECODE(entry) << 449 mapshift)), 450 (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift)); 451 if (SM_TYPE_DECODE(entry) == SM_ALLOC) 452 alloc += SM_RUN_DECODE(entry) << mapshift; 453 else 454 alloc -= SM_RUN_DECODE(entry) << mapshift; 455 } 456 } 457 if (alloc != smo->smo_alloc) { 458 (void) printf("space_map_object alloc (%llu) INCONSISTENT " 459 "with space map summary (%llu)\n", 460 (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc); 461 } 462 } 463 464 static void 465 dump_metaslab(metaslab_t *msp) 466 { 467 char freebuf[5]; 468 space_map_obj_t *smo = &msp->ms_smo; 469 vdev_t *vd = msp->ms_group->mg_vd; 470 spa_t *spa = vd->vdev_spa; 471 472 nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf); 473 474 if (dump_opt['d'] <= 5) { 475 (void) printf("\t%10llx %10llu %5s\n", 476 (u_longlong_t)msp->ms_map.sm_start, 477 (u_longlong_t)smo->smo_object, 478 freebuf); 479 return; 480 } 481 482 (void) printf( 483 "\tvdev %llu offset %08llx spacemap %4llu free %5s\n", 484 (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start, 485 (u_longlong_t)smo->smo_object, freebuf); 486 487 ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift)); 488 489 dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map); 490 } 491 492 static void 493 dump_metaslabs(spa_t *spa) 494 { 495 vdev_t *rvd = spa->spa_root_vdev; 496 vdev_t *vd; 497 int c, m; 498 499 (void) printf("\nMetaslabs:\n"); 500 501 for (c = 0; c < rvd->vdev_children; c++) { 502 vd = rvd->vdev_child[c]; 503 504 spa_config_enter(spa, RW_READER, FTAG); 505 (void) printf("\n vdev %llu = %s\n\n", 506 (u_longlong_t)vd->vdev_id, vdev_description(vd)); 507 spa_config_exit(spa, FTAG); 508 509 if (dump_opt['d'] <= 5) { 510 (void) printf("\t%10s %10s %5s\n", 511 "offset", "spacemap", "free"); 512 (void) printf("\t%10s %10s %5s\n", 513 "------", "--------", "----"); 514 } 515 for (m = 0; m < vd->vdev_ms_count; m++) 516 dump_metaslab(vd->vdev_ms[m]); 517 (void) printf("\n"); 518 } 519 } 520 521 static void 522 dump_dtl(vdev_t *vd, int indent) 523 { 524 avl_tree_t *t = &vd->vdev_dtl_map.sm_root; 525 spa_t *spa = vd->vdev_spa; 526 space_seg_t *ss; 527 vdev_t *pvd; 528 int c; 529 530 if (indent == 0) 531 (void) printf("\nDirty time logs:\n\n"); 532 533 spa_config_enter(spa, RW_READER, FTAG); 534 (void) printf("\t%*s%s\n", indent, "", vdev_description(vd)); 535 spa_config_exit(spa, FTAG); 536 537 for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) { 538 /* 539 * Everything in this DTL must appear in all parent DTL unions. 540 */ 541 for (pvd = vd; pvd; pvd = pvd->vdev_parent) 542 ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map, 543 ss->ss_start, ss->ss_end - ss->ss_start)); 544 (void) printf("\t%*soutage [%llu,%llu] length %llu\n", 545 indent, "", 546 (u_longlong_t)ss->ss_start, 547 (u_longlong_t)ss->ss_end - 1, 548 (u_longlong_t)(ss->ss_end - ss->ss_start)); 549 } 550 551 (void) printf("\n"); 552 553 if (dump_opt['d'] > 5 && vd->vdev_children == 0) { 554 dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl, 555 &vd->vdev_dtl_map); 556 (void) printf("\n"); 557 } 558 559 for (c = 0; c < vd->vdev_children; c++) 560 dump_dtl(vd->vdev_child[c], indent + 4); 561 } 562 563 /*ARGSUSED*/ 564 static void 565 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 566 { 567 } 568 569 static uint64_t 570 blkid2offset(dnode_phys_t *dnp, int level, uint64_t blkid) 571 { 572 if (level < 0) 573 return (blkid); 574 575 return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 576 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 577 } 578 579 static void 580 sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas) 581 { 582 dva_t *dva = bp->blk_dva; 583 int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1; 584 int i; 585 586 blkbuf[0] = '\0'; 587 588 for (i = 0; i < ndvas; i++) 589 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ", 590 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 591 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 592 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 593 594 (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu", 595 (u_longlong_t)BP_GET_LSIZE(bp), 596 (u_longlong_t)BP_GET_PSIZE(bp), 597 (u_longlong_t)bp->blk_fill, 598 (u_longlong_t)bp->blk_birth); 599 } 600 601 /* ARGSUSED */ 602 static int 603 zdb_indirect_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) 604 { 605 zbookmark_t *zb = &bc->bc_bookmark; 606 blkptr_t *bp = &bc->bc_blkptr; 607 void *data = bc->bc_data; 608 dnode_phys_t *dnp = bc->bc_dnode; 609 char blkbuf[BP_SPRINTF_LEN + 80]; 610 int l; 611 612 if (bc->bc_errno) { 613 (void) sprintf(blkbuf, 614 "Error %d reading <%llu, %llu, %lld, %llu>: ", 615 bc->bc_errno, 616 (u_longlong_t)zb->zb_objset, 617 (u_longlong_t)zb->zb_object, 618 (u_longlong_t)zb->zb_level, 619 (u_longlong_t)zb->zb_blkid); 620 goto out; 621 } 622 623 if (zb->zb_level == -1) { 624 ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); 625 ASSERT3U(BP_GET_LEVEL(bp), ==, 0); 626 } else { 627 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 628 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 629 } 630 631 if (zb->zb_level > 0) { 632 uint64_t fill = 0; 633 blkptr_t *bpx, *bpend; 634 635 for (bpx = data, bpend = bpx + BP_GET_LSIZE(bp) / sizeof (*bpx); 636 bpx < bpend; bpx++) { 637 if (bpx->blk_birth != 0) { 638 fill += bpx->blk_fill; 639 } else { 640 ASSERT(bpx->blk_fill == 0); 641 } 642 } 643 ASSERT3U(fill, ==, bp->blk_fill); 644 } 645 646 if (zb->zb_level == 0 && dnp->dn_type == DMU_OT_DNODE) { 647 uint64_t fill = 0; 648 dnode_phys_t *dnx, *dnend; 649 650 for (dnx = data, dnend = dnx + (BP_GET_LSIZE(bp)>>DNODE_SHIFT); 651 dnx < dnend; dnx++) { 652 if (dnx->dn_type != DMU_OT_NONE) 653 fill++; 654 } 655 ASSERT3U(fill, ==, bp->blk_fill); 656 } 657 658 (void) sprintf(blkbuf, "%16llx ", 659 (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid)); 660 661 ASSERT(zb->zb_level >= 0); 662 663 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 664 if (l == zb->zb_level) { 665 (void) sprintf(blkbuf + strlen(blkbuf), "L%llx", 666 (u_longlong_t)zb->zb_level); 667 } else { 668 (void) sprintf(blkbuf + strlen(blkbuf), " "); 669 } 670 } 671 672 out: 673 if (bp->blk_birth == 0) { 674 (void) sprintf(blkbuf + strlen(blkbuf), "<hole>"); 675 (void) printf("%s\n", blkbuf); 676 } else { 677 sprintf_blkptr_compact(blkbuf + strlen(blkbuf), bp, 678 dump_opt['d'] > 5 ? 1 : 0); 679 (void) printf("%s\n", blkbuf); 680 } 681 682 return (bc->bc_errno ? ERESTART : 0); 683 } 684 685 /*ARGSUSED*/ 686 static void 687 dump_indirect(objset_t *os, uint64_t object, void *data, size_t size) 688 { 689 traverse_handle_t *th; 690 uint64_t objset = dmu_objset_id(os); 691 int advance = zdb_advance; 692 693 (void) printf("Indirect blocks:\n"); 694 695 if (object == 0) 696 advance |= ADVANCE_DATA; 697 698 th = traverse_init(dmu_objset_spa(os), zdb_indirect_cb, NULL, advance, 699 ZIO_FLAG_CANFAIL); 700 th->th_noread = zdb_noread; 701 702 traverse_add_dnode(th, 0, -1ULL, objset, object); 703 704 while (traverse_more(th) == EAGAIN) 705 continue; 706 707 (void) printf("\n"); 708 709 traverse_fini(th); 710 } 711 712 /*ARGSUSED*/ 713 static void 714 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 715 { 716 dsl_dir_phys_t *dd = data; 717 time_t crtime; 718 char used[6], compressed[6], uncompressed[6], quota[6], resv[6]; 719 720 if (dd == NULL) 721 return; 722 723 ASSERT(size == sizeof (*dd)); 724 725 crtime = dd->dd_creation_time; 726 nicenum(dd->dd_used_bytes, used); 727 nicenum(dd->dd_compressed_bytes, compressed); 728 nicenum(dd->dd_uncompressed_bytes, uncompressed); 729 nicenum(dd->dd_quota, quota); 730 nicenum(dd->dd_reserved, resv); 731 732 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 733 (void) printf("\t\thead_dataset_obj = %llu\n", 734 (u_longlong_t)dd->dd_head_dataset_obj); 735 (void) printf("\t\tparent_dir_obj = %llu\n", 736 (u_longlong_t)dd->dd_parent_obj); 737 (void) printf("\t\tclone_parent_obj = %llu\n", 738 (u_longlong_t)dd->dd_clone_parent_obj); 739 (void) printf("\t\tchild_dir_zapobj = %llu\n", 740 (u_longlong_t)dd->dd_child_dir_zapobj); 741 (void) printf("\t\tused_bytes = %s\n", used); 742 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 743 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 744 (void) printf("\t\tquota = %s\n", quota); 745 (void) printf("\t\treserved = %s\n", resv); 746 (void) printf("\t\tprops_zapobj = %llu\n", 747 (u_longlong_t)dd->dd_props_zapobj); 748 (void) printf("\t\tdeleg_zapobj = %llu\n", 749 (u_longlong_t)dd->dd_deleg_zapobj); 750 } 751 752 /*ARGSUSED*/ 753 static void 754 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 755 { 756 dsl_dataset_phys_t *ds = data; 757 time_t crtime; 758 char used[6], compressed[6], uncompressed[6], unique[6]; 759 char blkbuf[BP_SPRINTF_LEN]; 760 761 if (ds == NULL) 762 return; 763 764 ASSERT(size == sizeof (*ds)); 765 crtime = ds->ds_creation_time; 766 nicenum(ds->ds_used_bytes, used); 767 nicenum(ds->ds_compressed_bytes, compressed); 768 nicenum(ds->ds_uncompressed_bytes, uncompressed); 769 nicenum(ds->ds_unique_bytes, unique); 770 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp); 771 772 (void) printf("\t\tdataset_obj = %llu\n", 773 (u_longlong_t)ds->ds_dir_obj); 774 (void) printf("\t\tprev_snap_obj = %llu\n", 775 (u_longlong_t)ds->ds_prev_snap_obj); 776 (void) printf("\t\tprev_snap_txg = %llu\n", 777 (u_longlong_t)ds->ds_prev_snap_txg); 778 (void) printf("\t\tnext_snap_obj = %llu\n", 779 (u_longlong_t)ds->ds_next_snap_obj); 780 (void) printf("\t\tsnapnames_zapobj = %llu\n", 781 (u_longlong_t)ds->ds_snapnames_zapobj); 782 (void) printf("\t\tnum_children = %llu\n", 783 (u_longlong_t)ds->ds_num_children); 784 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 785 (void) printf("\t\tcreation_txg = %llu\n", 786 (u_longlong_t)ds->ds_creation_txg); 787 (void) printf("\t\tdeadlist_obj = %llu\n", 788 (u_longlong_t)ds->ds_deadlist_obj); 789 (void) printf("\t\tused_bytes = %s\n", used); 790 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 791 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 792 (void) printf("\t\tunique = %s\n", unique); 793 (void) printf("\t\tfsid_guid = %llu\n", 794 (u_longlong_t)ds->ds_fsid_guid); 795 (void) printf("\t\tguid = %llu\n", 796 (u_longlong_t)ds->ds_guid); 797 (void) printf("\t\tflags = %llx\n", 798 (u_longlong_t)ds->ds_flags); 799 (void) printf("\t\tbp = %s\n", blkbuf); 800 } 801 802 static void 803 dump_bplist(objset_t *mos, uint64_t object, char *name) 804 { 805 bplist_t bpl = { 0 }; 806 blkptr_t blk, *bp = &blk; 807 uint64_t itor = 0; 808 char bytes[6]; 809 char comp[6]; 810 char uncomp[6]; 811 812 if (dump_opt['d'] < 3) 813 return; 814 815 mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL); 816 VERIFY(0 == bplist_open(&bpl, mos, object)); 817 if (bplist_empty(&bpl)) { 818 bplist_close(&bpl); 819 mutex_destroy(&bpl.bpl_lock); 820 return; 821 } 822 823 nicenum(bpl.bpl_phys->bpl_bytes, bytes); 824 if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) { 825 nicenum(bpl.bpl_phys->bpl_comp, comp); 826 nicenum(bpl.bpl_phys->bpl_uncomp, uncomp); 827 (void) printf("\n %s: %llu entries, %s (%s/%s comp)\n", 828 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, 829 bytes, comp, uncomp); 830 } else { 831 (void) printf("\n %s: %llu entries, %s\n", 832 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes); 833 } 834 835 if (dump_opt['d'] < 5) { 836 bplist_close(&bpl); 837 mutex_destroy(&bpl.bpl_lock); 838 return; 839 } 840 841 (void) printf("\n"); 842 843 while (bplist_iterate(&bpl, &itor, bp) == 0) { 844 char blkbuf[BP_SPRINTF_LEN]; 845 846 ASSERT(bp->blk_birth != 0); 847 sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0); 848 (void) printf("\tItem %3llu: %s\n", 849 (u_longlong_t)itor - 1, blkbuf); 850 } 851 852 bplist_close(&bpl); 853 mutex_destroy(&bpl.bpl_lock); 854 } 855 856 /*ARGSUSED*/ 857 static void 858 dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 859 { 860 znode_phys_t *zp = data; 861 time_t z_crtime, z_atime, z_mtime, z_ctime; 862 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 863 int error; 864 865 ASSERT(size >= sizeof (znode_phys_t)); 866 867 error = zfs_obj_to_path(os, object, path, sizeof (path)); 868 if (error != 0) { 869 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>", 870 (u_longlong_t)object); 871 } 872 873 if (dump_opt['d'] < 3) { 874 (void) printf("\t%s\n", path); 875 return; 876 } 877 878 z_crtime = (time_t)zp->zp_crtime[0]; 879 z_atime = (time_t)zp->zp_atime[0]; 880 z_mtime = (time_t)zp->zp_mtime[0]; 881 z_ctime = (time_t)zp->zp_ctime[0]; 882 883 (void) printf("\tpath %s\n", path); 884 (void) printf("\tatime %s", ctime(&z_atime)); 885 (void) printf("\tmtime %s", ctime(&z_mtime)); 886 (void) printf("\tctime %s", ctime(&z_ctime)); 887 (void) printf("\tcrtime %s", ctime(&z_crtime)); 888 (void) printf("\tgen %llu\n", (u_longlong_t)zp->zp_gen); 889 (void) printf("\tmode %llo\n", (u_longlong_t)zp->zp_mode); 890 (void) printf("\tsize %llu\n", (u_longlong_t)zp->zp_size); 891 (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent); 892 (void) printf("\tlinks %llu\n", (u_longlong_t)zp->zp_links); 893 (void) printf("\txattr %llu\n", (u_longlong_t)zp->zp_xattr); 894 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)zp->zp_rdev); 895 } 896 897 /*ARGSUSED*/ 898 static void 899 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 900 { 901 } 902 903 /*ARGSUSED*/ 904 static void 905 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 906 { 907 } 908 909 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = { 910 dump_none, /* unallocated */ 911 dump_zap, /* object directory */ 912 dump_uint64, /* object array */ 913 dump_none, /* packed nvlist */ 914 dump_packed_nvlist, /* packed nvlist size */ 915 dump_none, /* bplist */ 916 dump_none, /* bplist header */ 917 dump_none, /* SPA space map header */ 918 dump_none, /* SPA space map */ 919 dump_none, /* ZIL intent log */ 920 dump_dnode, /* DMU dnode */ 921 dump_dmu_objset, /* DMU objset */ 922 dump_dsl_dir, /* DSL directory */ 923 dump_zap, /* DSL directory child map */ 924 dump_zap, /* DSL dataset snap map */ 925 dump_zap, /* DSL props */ 926 dump_dsl_dataset, /* DSL dataset */ 927 dump_znode, /* ZFS znode */ 928 dump_acl, /* ZFS ACL */ 929 dump_uint8, /* ZFS plain file */ 930 dump_zpldir, /* ZFS directory */ 931 dump_zap, /* ZFS master node */ 932 dump_zap, /* ZFS delete queue */ 933 dump_uint8, /* zvol object */ 934 dump_zap, /* zvol prop */ 935 dump_uint8, /* other uint8[] */ 936 dump_uint64, /* other uint64[] */ 937 dump_zap, /* other ZAP */ 938 dump_zap, /* persistent error log */ 939 dump_uint8, /* SPA history */ 940 dump_uint64, /* SPA history offsets */ 941 dump_zap, /* Pool properties */ 942 dump_zap, /* DSL permissions */ 943 }; 944 945 static void 946 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 947 { 948 dmu_buf_t *db = NULL; 949 dmu_object_info_t doi; 950 dnode_t *dn; 951 void *bonus = NULL; 952 size_t bsize = 0; 953 char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6]; 954 char aux[50]; 955 int error; 956 957 if (*print_header) { 958 (void) printf("\n Object lvl iblk dblk lsize" 959 " asize type\n"); 960 *print_header = 0; 961 } 962 963 if (object == 0) { 964 dn = os->os->os_meta_dnode; 965 } else { 966 error = dmu_bonus_hold(os, object, FTAG, &db); 967 if (error) 968 fatal("dmu_bonus_hold(%llu) failed, errno %u", 969 object, error); 970 bonus = db->db_data; 971 bsize = db->db_size; 972 dn = ((dmu_buf_impl_t *)db)->db_dnode; 973 } 974 dmu_object_info_from_dnode(dn, &doi); 975 976 nicenum(doi.doi_metadata_block_size, iblk); 977 nicenum(doi.doi_data_block_size, dblk); 978 nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1), 979 lsize); 980 nicenum(doi.doi_physical_blks << 9, asize); 981 nicenum(doi.doi_bonus_size, bonus_size); 982 983 aux[0] = '\0'; 984 985 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 986 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 987 zio_checksum_table[doi.doi_checksum].ci_name); 988 } 989 990 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 991 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 992 zio_compress_table[doi.doi_compress].ci_name); 993 } 994 995 (void) printf("%10lld %3u %5s %5s %5s %5s %s%s\n", 996 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize, 997 asize, dmu_ot[doi.doi_type].ot_name, aux); 998 999 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 1000 (void) printf("%10s %3s %5s %5s %5s %5s %s\n", 1001 "", "", "", "", bonus_size, "bonus", 1002 dmu_ot[doi.doi_bonus_type].ot_name); 1003 } 1004 1005 if (verbosity >= 4) { 1006 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize); 1007 object_viewer[doi.doi_type](os, object, NULL, 0); 1008 *print_header = 1; 1009 } 1010 1011 if (verbosity >= 5) 1012 dump_indirect(os, object, NULL, 0); 1013 1014 if (verbosity >= 5) { 1015 /* 1016 * Report the list of segments that comprise the object. 1017 */ 1018 uint64_t start = 0; 1019 uint64_t end; 1020 uint64_t blkfill = 1; 1021 int minlvl = 1; 1022 1023 if (dn->dn_type == DMU_OT_DNODE) { 1024 minlvl = 0; 1025 blkfill = DNODES_PER_BLOCK; 1026 } 1027 1028 for (;;) { 1029 error = dnode_next_offset(dn, B_FALSE, &start, minlvl, 1030 blkfill, 0); 1031 if (error) 1032 break; 1033 end = start; 1034 error = dnode_next_offset(dn, B_TRUE, &end, minlvl, 1035 blkfill, 0); 1036 nicenum(end - start, segsize); 1037 (void) printf("\t\tsegment [%016llx, %016llx)" 1038 " size %5s\n", (u_longlong_t)start, 1039 (u_longlong_t)end, segsize); 1040 if (error) 1041 break; 1042 start = end; 1043 } 1044 } 1045 1046 if (db != NULL) 1047 dmu_buf_rele(db, FTAG); 1048 } 1049 1050 static char *objset_types[DMU_OST_NUMTYPES] = { 1051 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1052 1053 /*ARGSUSED*/ 1054 static void 1055 dump_dir(objset_t *os) 1056 { 1057 dmu_objset_stats_t dds; 1058 uint64_t object, object_count; 1059 uint64_t refdbytes, usedobjs, scratch; 1060 char numbuf[8]; 1061 char blkbuf[BP_SPRINTF_LEN]; 1062 char osname[MAXNAMELEN]; 1063 char *type = "UNKNOWN"; 1064 int verbosity = dump_opt['d']; 1065 int print_header = 1; 1066 int i, error; 1067 1068 dmu_objset_fast_stat(os, &dds); 1069 1070 if (dds.dds_type < DMU_OST_NUMTYPES) 1071 type = objset_types[dds.dds_type]; 1072 1073 if (dds.dds_type == DMU_OST_META) { 1074 dds.dds_creation_txg = TXG_INITIAL; 1075 usedobjs = os->os->os_rootbp->blk_fill; 1076 refdbytes = 1077 os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes; 1078 } else { 1079 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 1080 } 1081 1082 ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill); 1083 1084 nicenum(refdbytes, numbuf); 1085 1086 if (verbosity >= 4) { 1087 (void) strcpy(blkbuf, ", rootbp "); 1088 sprintf_blkptr(blkbuf + strlen(blkbuf), 1089 BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp); 1090 } else { 1091 blkbuf[0] = '\0'; 1092 } 1093 1094 dmu_objset_name(os, osname); 1095 1096 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 1097 "%s, %llu objects%s\n", 1098 osname, type, (u_longlong_t)dmu_objset_id(os), 1099 (u_longlong_t)dds.dds_creation_txg, 1100 numbuf, (u_longlong_t)usedobjs, blkbuf); 1101 1102 dump_intent_log(dmu_objset_zil(os)); 1103 1104 if (dmu_objset_ds(os) != NULL) 1105 dump_bplist(dmu_objset_pool(os)->dp_meta_objset, 1106 dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist"); 1107 1108 if (verbosity < 2) 1109 return; 1110 1111 if (zopt_objects != 0) { 1112 for (i = 0; i < zopt_objects; i++) 1113 dump_object(os, zopt_object[i], verbosity, 1114 &print_header); 1115 (void) printf("\n"); 1116 return; 1117 } 1118 1119 dump_object(os, 0, verbosity, &print_header); 1120 object_count = 1; 1121 1122 object = 0; 1123 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 1124 dump_object(os, object, verbosity, &print_header); 1125 object_count++; 1126 } 1127 1128 ASSERT3U(object_count, ==, usedobjs); 1129 1130 (void) printf("\n"); 1131 1132 if (error != ESRCH) 1133 fatal("dmu_object_next() = %d", error); 1134 } 1135 1136 static void 1137 dump_uberblock(uberblock_t *ub) 1138 { 1139 time_t timestamp = ub->ub_timestamp; 1140 1141 (void) printf("Uberblock\n\n"); 1142 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 1143 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 1144 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 1145 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 1146 (void) printf("\ttimestamp = %llu UTC = %s", 1147 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 1148 if (dump_opt['u'] >= 3) { 1149 char blkbuf[BP_SPRINTF_LEN]; 1150 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp); 1151 (void) printf("\trootbp = %s\n", blkbuf); 1152 } 1153 (void) printf("\n"); 1154 } 1155 1156 static void 1157 dump_config(const char *pool) 1158 { 1159 spa_t *spa = NULL; 1160 1161 mutex_enter(&spa_namespace_lock); 1162 while ((spa = spa_next(spa)) != NULL) { 1163 if (pool == NULL) 1164 (void) printf("%s\n", spa_name(spa)); 1165 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0) 1166 dump_nvlist(spa->spa_config, 4); 1167 } 1168 mutex_exit(&spa_namespace_lock); 1169 } 1170 1171 static void 1172 dump_label(const char *dev) 1173 { 1174 int fd; 1175 vdev_label_t label; 1176 char *buf = label.vl_vdev_phys.vp_nvlist; 1177 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 1178 struct stat64 statbuf; 1179 uint64_t psize; 1180 int l; 1181 1182 if ((fd = open64(dev, O_RDONLY)) < 0) { 1183 (void) printf("cannot open '%s': %s\n", dev, strerror(errno)); 1184 exit(1); 1185 } 1186 1187 if (fstat64(fd, &statbuf) != 0) { 1188 (void) printf("failed to stat '%s': %s\n", dev, 1189 strerror(errno)); 1190 exit(1); 1191 } 1192 1193 psize = statbuf.st_size; 1194 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 1195 1196 for (l = 0; l < VDEV_LABELS; l++) { 1197 1198 nvlist_t *config = NULL; 1199 1200 (void) printf("--------------------------------------------\n"); 1201 (void) printf("LABEL %d\n", l); 1202 (void) printf("--------------------------------------------\n"); 1203 1204 if (pread64(fd, &label, sizeof (label), 1205 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 1206 (void) printf("failed to read label %d\n", l); 1207 continue; 1208 } 1209 1210 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 1211 (void) printf("failed to unpack label %d\n", l); 1212 continue; 1213 } 1214 dump_nvlist(config, 4); 1215 nvlist_free(config); 1216 } 1217 } 1218 1219 /*ARGSUSED*/ 1220 static int 1221 dump_one_dir(char *dsname, void *arg) 1222 { 1223 int error; 1224 objset_t *os; 1225 1226 error = dmu_objset_open(dsname, DMU_OST_ANY, 1227 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1228 if (error) { 1229 (void) printf("Could not open %s\n", dsname); 1230 return (0); 1231 } 1232 dump_dir(os); 1233 dmu_objset_close(os); 1234 return (0); 1235 } 1236 1237 static void 1238 zdb_space_map_load(spa_t *spa) 1239 { 1240 vdev_t *rvd = spa->spa_root_vdev; 1241 vdev_t *vd; 1242 int c, m, error; 1243 1244 for (c = 0; c < rvd->vdev_children; c++) { 1245 vd = rvd->vdev_child[c]; 1246 for (m = 0; m < vd->vdev_ms_count; m++) { 1247 metaslab_t *msp = vd->vdev_ms[m]; 1248 mutex_enter(&msp->ms_lock); 1249 error = space_map_load(&msp->ms_allocmap[0], NULL, 1250 SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset); 1251 mutex_exit(&msp->ms_lock); 1252 if (error) 1253 fatal("%s bad space map #%d, error %d", 1254 spa->spa_name, c, error); 1255 } 1256 } 1257 } 1258 1259 static int 1260 zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb) 1261 { 1262 dva_t *dva = bp->blk_dva; 1263 vdev_t *vd; 1264 metaslab_t *msp; 1265 space_map_t *allocmap, *freemap; 1266 int error; 1267 int d; 1268 blkptr_t blk = *bp; 1269 1270 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1271 uint64_t vdev = DVA_GET_VDEV(&dva[d]); 1272 uint64_t offset = DVA_GET_OFFSET(&dva[d]); 1273 uint64_t size = DVA_GET_ASIZE(&dva[d]); 1274 1275 if ((vd = vdev_lookup_top(spa, vdev)) == NULL) 1276 return (ENXIO); 1277 1278 if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count) 1279 return (ENXIO); 1280 1281 msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 1282 allocmap = &msp->ms_allocmap[0]; 1283 freemap = &msp->ms_freemap[0]; 1284 1285 /* Prepare our copy of the bp in case we need to read GBHs */ 1286 if (DVA_GET_GANG(&dva[d])) { 1287 size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE); 1288 DVA_SET_ASIZE(&blk.blk_dva[d], size); 1289 DVA_SET_GANG(&blk.blk_dva[d], 0); 1290 } 1291 1292 mutex_enter(&msp->ms_lock); 1293 if (space_map_contains(freemap, offset, size)) { 1294 mutex_exit(&msp->ms_lock); 1295 return (EAGAIN); /* allocated more than once */ 1296 } 1297 1298 if (!space_map_contains(allocmap, offset, size)) { 1299 mutex_exit(&msp->ms_lock); 1300 return (ESTALE); /* not allocated at all */ 1301 } 1302 1303 space_map_remove(allocmap, offset, size); 1304 space_map_add(freemap, offset, size); 1305 1306 mutex_exit(&msp->ms_lock); 1307 } 1308 1309 if (BP_IS_GANG(bp)) { 1310 zio_gbh_phys_t gbh; 1311 int g; 1312 1313 /* LINTED - compile time assert */ 1314 ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE); 1315 1316 BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER); 1317 BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE); 1318 BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE); 1319 BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF); 1320 error = zio_wait(zio_read(NULL, spa, &blk, &gbh, 1321 SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ, 1322 ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb)); 1323 if (error) 1324 return (error); 1325 if (BP_SHOULD_BYTESWAP(&blk)) 1326 byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE); 1327 for (g = 0; g < SPA_GBH_NBLKPTRS; g++) { 1328 if (BP_IS_HOLE(&gbh.zg_blkptr[g])) 1329 break; 1330 error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb); 1331 if (error) 1332 return (error); 1333 } 1334 } 1335 1336 return (0); 1337 } 1338 1339 static void 1340 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size) 1341 { 1342 metaslab_t *msp; 1343 1344 /* LINTED */ 1345 msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0])); 1346 1347 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 1348 (u_longlong_t)msp->ms_group->mg_vd->vdev_id, 1349 (u_longlong_t)start, 1350 (u_longlong_t)size); 1351 } 1352 1353 static void 1354 zdb_space_map_unload(spa_t *spa) 1355 { 1356 vdev_t *rvd = spa->spa_root_vdev; 1357 vdev_t *vd; 1358 int c, m; 1359 1360 for (c = 0; c < rvd->vdev_children; c++) { 1361 vd = rvd->vdev_child[c]; 1362 for (m = 0; m < vd->vdev_ms_count; m++) { 1363 metaslab_t *msp = vd->vdev_ms[m]; 1364 mutex_enter(&msp->ms_lock); 1365 space_map_vacate(&msp->ms_allocmap[0], zdb_leak, 1366 &msp->ms_allocmap[0]); 1367 space_map_unload(&msp->ms_allocmap[0]); 1368 space_map_vacate(&msp->ms_freemap[0], NULL, NULL); 1369 mutex_exit(&msp->ms_lock); 1370 } 1371 } 1372 } 1373 1374 static void 1375 zdb_refresh_ubsync(spa_t *spa) 1376 { 1377 uberblock_t ub = { 0 }; 1378 vdev_t *rvd = spa->spa_root_vdev; 1379 zio_t *zio; 1380 1381 /* 1382 * Reload the uberblock. 1383 */ 1384 zio = zio_root(spa, NULL, NULL, 1385 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); 1386 vdev_uberblock_load(zio, rvd, &ub); 1387 (void) zio_wait(zio); 1388 1389 if (ub.ub_txg != 0) 1390 spa->spa_ubsync = ub; 1391 } 1392 1393 /* 1394 * Verify that the sum of the sizes of all blocks in the pool adds up 1395 * to the SPA's sa_alloc total. 1396 */ 1397 typedef struct zdb_blkstats { 1398 uint64_t zb_asize; 1399 uint64_t zb_lsize; 1400 uint64_t zb_psize; 1401 uint64_t zb_count; 1402 } zdb_blkstats_t; 1403 1404 #define DMU_OT_DEFERRED DMU_OT_NONE 1405 #define DMU_OT_TOTAL DMU_OT_NUMTYPES 1406 1407 #define ZB_TOTAL ZB_MAXLEVEL 1408 1409 typedef struct zdb_cb { 1410 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1]; 1411 uint64_t zcb_errors[256]; 1412 traverse_blk_cache_t *zcb_cache; 1413 int zcb_readfails; 1414 int zcb_haderrors; 1415 } zdb_cb_t; 1416 1417 static void 1418 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type) 1419 { 1420 int i, error; 1421 1422 for (i = 0; i < 4; i++) { 1423 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 1424 int t = (i & 1) ? type : DMU_OT_TOTAL; 1425 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 1426 1427 zb->zb_asize += BP_GET_ASIZE(bp); 1428 zb->zb_lsize += BP_GET_LSIZE(bp); 1429 zb->zb_psize += BP_GET_PSIZE(bp); 1430 zb->zb_count++; 1431 } 1432 1433 if (dump_opt['L']) 1434 return; 1435 1436 error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark); 1437 1438 if (error == 0) 1439 return; 1440 1441 if (error == EAGAIN) 1442 (void) fatal("double-allocation, bp=%p", bp); 1443 1444 if (error == ESTALE) 1445 (void) fatal("reference to freed block, bp=%p", bp); 1446 1447 (void) fatal("fatal error %d in bp %p", error, bp); 1448 } 1449 1450 static int 1451 zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg) 1452 { 1453 zbookmark_t *zb = &bc->bc_bookmark; 1454 zdb_cb_t *zcb = arg; 1455 blkptr_t *bp = &bc->bc_blkptr; 1456 dmu_object_type_t type = BP_GET_TYPE(bp); 1457 char blkbuf[BP_SPRINTF_LEN]; 1458 int error = 0; 1459 1460 if (bc->bc_errno) { 1461 if (zcb->zcb_readfails++ < 10 && dump_opt['L']) { 1462 zdb_refresh_ubsync(spa); 1463 error = EAGAIN; 1464 } else { 1465 zcb->zcb_haderrors = 1; 1466 zcb->zcb_errors[bc->bc_errno]++; 1467 error = ERESTART; 1468 } 1469 1470 if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno)) 1471 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1472 else 1473 blkbuf[0] = '\0'; 1474 1475 (void) printf("zdb_blkptr_cb: Got error %d reading " 1476 "<%llu, %llu, %lld, %llx> %s -- %s\n", 1477 bc->bc_errno, 1478 (u_longlong_t)zb->zb_objset, 1479 (u_longlong_t)zb->zb_object, 1480 (u_longlong_t)zb->zb_level, 1481 (u_longlong_t)zb->zb_blkid, 1482 blkbuf, 1483 error == EAGAIN ? "retrying" : "skipping"); 1484 1485 return (error); 1486 } 1487 1488 zcb->zcb_readfails = 0; 1489 1490 ASSERT(!BP_IS_HOLE(bp)); 1491 1492 if (dump_opt['b'] >= 4) { 1493 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1494 (void) printf("objset %llu object %llu offset 0x%llx %s\n", 1495 (u_longlong_t)zb->zb_objset, 1496 (u_longlong_t)zb->zb_object, 1497 (u_longlong_t)blkid2offset(bc->bc_dnode, 1498 zb->zb_level, zb->zb_blkid), blkbuf); 1499 } 1500 1501 zdb_count_block(spa, zcb, bp, type); 1502 1503 return (0); 1504 } 1505 1506 static int 1507 dump_block_stats(spa_t *spa) 1508 { 1509 traverse_handle_t *th; 1510 zdb_cb_t zcb = { 0 }; 1511 traverse_blk_cache_t dummy_cache = { 0 }; 1512 zdb_blkstats_t *zb, *tzb; 1513 uint64_t alloc, space, logalloc; 1514 vdev_t *rvd = spa->spa_root_vdev; 1515 int leaks = 0; 1516 int advance = zdb_advance; 1517 int c, e, flags; 1518 1519 zcb.zcb_cache = &dummy_cache; 1520 1521 if (dump_opt['c']) 1522 advance |= ADVANCE_DATA; 1523 1524 advance |= ADVANCE_PRUNE | ADVANCE_ZIL; 1525 1526 (void) printf("\nTraversing all blocks to %sverify" 1527 " nothing leaked ...\n", 1528 dump_opt['c'] ? "verify checksums and " : ""); 1529 1530 /* 1531 * Load all space maps. As we traverse the pool, if we find a block 1532 * that's not in its space map, that indicates a double-allocation, 1533 * reference to a freed block, or an unclaimed block. Otherwise we 1534 * remove the block from the space map. If the space maps are not 1535 * empty when we're done, that indicates leaked blocks. 1536 */ 1537 if (!dump_opt['L']) 1538 zdb_space_map_load(spa); 1539 1540 /* 1541 * If there's a deferred-free bplist, process that first. 1542 */ 1543 if (spa->spa_sync_bplist_obj != 0) { 1544 bplist_t *bpl = &spa->spa_sync_bplist; 1545 blkptr_t blk; 1546 uint64_t itor = 0; 1547 1548 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset, 1549 spa->spa_sync_bplist_obj)); 1550 1551 while (bplist_iterate(bpl, &itor, &blk) == 0) { 1552 if (dump_opt['b'] >= 4) { 1553 char blkbuf[BP_SPRINTF_LEN]; 1554 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk); 1555 (void) printf("[%s] %s\n", 1556 "deferred free", blkbuf); 1557 } 1558 zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED); 1559 } 1560 1561 bplist_close(bpl); 1562 } 1563 1564 /* 1565 * Now traverse the pool. If we're reading all data to verify 1566 * checksums, do a scrubbing read so that we validate all copies. 1567 */ 1568 flags = ZIO_FLAG_CANFAIL; 1569 if (advance & ADVANCE_DATA) 1570 flags |= ZIO_FLAG_SCRUB; 1571 th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags); 1572 th->th_noread = zdb_noread; 1573 1574 traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES); 1575 1576 while (traverse_more(th) == EAGAIN) 1577 continue; 1578 1579 traverse_fini(th); 1580 1581 if (zcb.zcb_haderrors) { 1582 (void) printf("\nError counts:\n\n"); 1583 (void) printf("\t%5s %s\n", "errno", "count"); 1584 for (e = 0; e < 256; e++) { 1585 if (zcb.zcb_errors[e] != 0) { 1586 (void) printf("\t%5d %llu\n", 1587 e, (u_longlong_t)zcb.zcb_errors[e]); 1588 } 1589 } 1590 } 1591 1592 /* 1593 * Report any leaked segments. 1594 */ 1595 if (!dump_opt['L']) 1596 zdb_space_map_unload(spa); 1597 1598 if (dump_opt['L']) 1599 (void) printf("\n\n *** Live pool traversal; " 1600 "block counts are only approximate ***\n\n"); 1601 1602 alloc = spa_get_alloc(spa); 1603 space = spa_get_space(spa); 1604 1605 /* 1606 * Log blocks allocated from a separate log device don't count 1607 * as part of the normal pool space; factor them in here. 1608 */ 1609 logalloc = 0; 1610 1611 for (c = 0; c < rvd->vdev_children; c++) 1612 if (rvd->vdev_child[c]->vdev_islog) 1613 logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc; 1614 1615 tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL]; 1616 1617 if (tzb->zb_asize == alloc + logalloc) { 1618 (void) printf("\n\tNo leaks (block sum matches space" 1619 " maps exactly)\n"); 1620 } else { 1621 (void) printf("block traversal size %llu != alloc %llu " 1622 "(leaked %lld)\n", 1623 (u_longlong_t)tzb->zb_asize, 1624 (u_longlong_t)alloc + logalloc, 1625 (u_longlong_t)(alloc + logalloc - tzb->zb_asize)); 1626 leaks = 1; 1627 } 1628 1629 if (tzb->zb_count == 0) 1630 return (2); 1631 1632 (void) printf("\n"); 1633 (void) printf("\tbp count: %10llu\n", 1634 (u_longlong_t)tzb->zb_count); 1635 (void) printf("\tbp logical: %10llu\t avg: %6llu\n", 1636 (u_longlong_t)tzb->zb_lsize, 1637 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 1638 (void) printf("\tbp physical: %10llu\t avg:" 1639 " %6llu\tcompression: %6.2f\n", 1640 (u_longlong_t)tzb->zb_psize, 1641 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 1642 (double)tzb->zb_lsize / tzb->zb_psize); 1643 (void) printf("\tbp allocated: %10llu\t avg:" 1644 " %6llu\tcompression: %6.2f\n", 1645 (u_longlong_t)tzb->zb_asize, 1646 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 1647 (double)tzb->zb_lsize / tzb->zb_asize); 1648 (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n", 1649 (u_longlong_t)alloc, 100.0 * alloc / space); 1650 1651 if (dump_opt['b'] >= 2) { 1652 int l, t, level; 1653 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 1654 "\t avg\t comp\t%%Total\tType\n"); 1655 1656 for (t = 0; t <= DMU_OT_NUMTYPES; t++) { 1657 char csize[6], lsize[6], psize[6], asize[6], avg[6]; 1658 char *typename; 1659 1660 typename = t == DMU_OT_DEFERRED ? "deferred free" : 1661 t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name; 1662 1663 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 1664 (void) printf("%6s\t%5s\t%5s\t%5s" 1665 "\t%5s\t%5s\t%6s\t%s\n", 1666 "-", 1667 "-", 1668 "-", 1669 "-", 1670 "-", 1671 "-", 1672 "-", 1673 typename); 1674 continue; 1675 } 1676 1677 for (l = ZB_TOTAL - 1; l >= -1; l--) { 1678 level = (l == -1 ? ZB_TOTAL : l); 1679 zb = &zcb.zcb_type[level][t]; 1680 1681 if (zb->zb_asize == 0) 1682 continue; 1683 1684 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 1685 continue; 1686 1687 if (level == 0 && zb->zb_asize == 1688 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 1689 continue; 1690 1691 nicenum(zb->zb_count, csize); 1692 nicenum(zb->zb_lsize, lsize); 1693 nicenum(zb->zb_psize, psize); 1694 nicenum(zb->zb_asize, asize); 1695 nicenum(zb->zb_asize / zb->zb_count, avg); 1696 1697 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 1698 "\t%5.2f\t%6.2f\t", 1699 csize, lsize, psize, asize, avg, 1700 (double)zb->zb_lsize / zb->zb_psize, 1701 100.0 * zb->zb_asize / tzb->zb_asize); 1702 1703 if (level == ZB_TOTAL) 1704 (void) printf("%s\n", typename); 1705 else 1706 (void) printf(" L%d %s\n", 1707 level, typename); 1708 } 1709 } 1710 } 1711 1712 (void) printf("\n"); 1713 1714 if (leaks) 1715 return (2); 1716 1717 if (zcb.zcb_haderrors) 1718 return (3); 1719 1720 return (0); 1721 } 1722 1723 static void 1724 dump_zpool(spa_t *spa) 1725 { 1726 dsl_pool_t *dp = spa_get_dsl(spa); 1727 int rc = 0; 1728 1729 if (dump_opt['u']) 1730 dump_uberblock(&spa->spa_uberblock); 1731 1732 if (dump_opt['d'] || dump_opt['i']) { 1733 dump_dir(dp->dp_meta_objset); 1734 if (dump_opt['d'] >= 3) { 1735 dump_bplist(dp->dp_meta_objset, 1736 spa->spa_sync_bplist_obj, "Deferred frees"); 1737 dump_dtl(spa->spa_root_vdev, 0); 1738 dump_metaslabs(spa); 1739 } 1740 (void) dmu_objset_find(spa->spa_name, dump_one_dir, NULL, 1741 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 1742 } 1743 1744 if (dump_opt['b'] || dump_opt['c']) 1745 rc = dump_block_stats(spa); 1746 1747 if (dump_opt['s']) 1748 show_pool_stats(spa); 1749 1750 if (rc != 0) 1751 exit(rc); 1752 } 1753 1754 #define ZDB_FLAG_CHECKSUM 0x0001 1755 #define ZDB_FLAG_DECOMPRESS 0x0002 1756 #define ZDB_FLAG_BSWAP 0x0004 1757 #define ZDB_FLAG_GBH 0x0008 1758 #define ZDB_FLAG_INDIRECT 0x0010 1759 #define ZDB_FLAG_PHYS 0x0020 1760 #define ZDB_FLAG_RAW 0x0040 1761 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 1762 1763 int flagbits[256]; 1764 1765 static void 1766 zdb_print_blkptr(blkptr_t *bp, int flags) 1767 { 1768 dva_t *dva = bp->blk_dva; 1769 int d; 1770 1771 if (flags & ZDB_FLAG_BSWAP) 1772 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 1773 /* 1774 * Super-ick warning: This code is also duplicated in 1775 * cmd/mdb/common/modules/zfs/zfs.c . Yeah, I hate code 1776 * replication, too. 1777 */ 1778 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1779 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d, 1780 (longlong_t)DVA_GET_VDEV(&dva[d]), 1781 (longlong_t)DVA_GET_OFFSET(&dva[d])); 1782 (void) printf("\tDVA[%d]: GANG: %-5s GRID: %04llx\t" 1783 "ASIZE: %llx\n", d, 1784 DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE", 1785 (longlong_t)DVA_GET_GRID(&dva[d]), 1786 (longlong_t)DVA_GET_ASIZE(&dva[d])); 1787 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d, 1788 (u_longlong_t)DVA_GET_VDEV(&dva[d]), 1789 (longlong_t)DVA_GET_OFFSET(&dva[d]), 1790 (longlong_t)BP_GET_PSIZE(bp), 1791 BP_SHOULD_BYTESWAP(bp) ? "e" : "", 1792 !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ? 1793 "d" : "", 1794 DVA_GET_GANG(&dva[d]) ? "g" : "", 1795 BP_GET_COMPRESS(bp) != 0 ? "d" : ""); 1796 } 1797 (void) printf("\tLSIZE: %-16llx\t\tPSIZE: %llx\n", 1798 (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp)); 1799 (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE: %s\n", 1800 BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG", 1801 dmu_ot[BP_GET_TYPE(bp)].ot_name); 1802 (void) printf("\tBIRTH: %-16llx LEVEL: %-2llu\tFILL: %llx\n", 1803 (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp), 1804 (u_longlong_t)bp->blk_fill); 1805 (void) printf("\tCKFUNC: %-16s\t\tCOMP: %s\n", 1806 zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name, 1807 zio_compress_table[BP_GET_COMPRESS(bp)].ci_name); 1808 (void) printf("\tCKSUM: %llx:%llx:%llx:%llx\n", 1809 (u_longlong_t)bp->blk_cksum.zc_word[0], 1810 (u_longlong_t)bp->blk_cksum.zc_word[1], 1811 (u_longlong_t)bp->blk_cksum.zc_word[2], 1812 (u_longlong_t)bp->blk_cksum.zc_word[3]); 1813 } 1814 1815 static void 1816 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 1817 { 1818 int i; 1819 1820 for (i = 0; i < nbps; i++) 1821 zdb_print_blkptr(&bp[i], flags); 1822 } 1823 1824 static void 1825 zdb_dump_gbh(void *buf, int flags) 1826 { 1827 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 1828 } 1829 1830 static void 1831 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 1832 { 1833 if (flags & ZDB_FLAG_BSWAP) 1834 byteswap_uint64_array(buf, size); 1835 (void) write(2, buf, size); 1836 } 1837 1838 static void 1839 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 1840 { 1841 uint64_t *d = (uint64_t *)buf; 1842 int nwords = size / sizeof (uint64_t); 1843 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 1844 int i, j; 1845 char *hdr, *c; 1846 1847 1848 if (do_bswap) 1849 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 1850 else 1851 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 1852 1853 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 1854 1855 for (i = 0; i < nwords; i += 2) { 1856 (void) printf("%06llx: %016llx %016llx ", 1857 (u_longlong_t)(i * sizeof (uint64_t)), 1858 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 1859 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 1860 1861 c = (char *)&d[i]; 1862 for (j = 0; j < 2 * sizeof (uint64_t); j++) 1863 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 1864 (void) printf("\n"); 1865 } 1866 } 1867 1868 /* 1869 * There are two acceptable formats: 1870 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 1871 * child[.child]* - For example: 0.1.1 1872 * 1873 * The second form can be used to specify arbitrary vdevs anywhere 1874 * in the heirarchy. For example, in a pool with a mirror of 1875 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 1876 */ 1877 static vdev_t * 1878 zdb_vdev_lookup(vdev_t *vdev, char *path) 1879 { 1880 char *s, *p, *q; 1881 int i; 1882 1883 if (vdev == NULL) 1884 return (NULL); 1885 1886 /* First, assume the x.x.x.x format */ 1887 i = (int)strtoul(path, &s, 10); 1888 if (s == path || (s && *s != '.' && *s != '\0')) 1889 goto name; 1890 if (i < 0 || i >= vdev->vdev_children) 1891 return (NULL); 1892 1893 vdev = vdev->vdev_child[i]; 1894 if (*s == '\0') 1895 return (vdev); 1896 return (zdb_vdev_lookup(vdev, s+1)); 1897 1898 name: 1899 for (i = 0; i < vdev->vdev_children; i++) { 1900 vdev_t *vc = vdev->vdev_child[i]; 1901 1902 if (vc->vdev_path == NULL) { 1903 vc = zdb_vdev_lookup(vc, path); 1904 if (vc == NULL) 1905 continue; 1906 else 1907 return (vc); 1908 } 1909 1910 p = strrchr(vc->vdev_path, '/'); 1911 p = p ? p + 1 : vc->vdev_path; 1912 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 1913 1914 if (strcmp(vc->vdev_path, path) == 0) 1915 return (vc); 1916 if (strcmp(p, path) == 0) 1917 return (vc); 1918 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 1919 return (vc); 1920 } 1921 1922 return (NULL); 1923 } 1924 1925 /* 1926 * Read a block from a pool and print it out. The syntax of the 1927 * block descriptor is: 1928 * 1929 * pool:vdev_specifier:offset:size[:flags] 1930 * 1931 * pool - The name of the pool you wish to read from 1932 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 1933 * offset - offset, in hex, in bytes 1934 * size - Amount of data to read, in hex, in bytes 1935 * flags - A string of characters specifying options 1936 * b: Decode a blkptr at given offset within block 1937 * *c: Calculate and display checksums 1938 * *d: Decompress data before dumping 1939 * e: Byteswap data before dumping 1940 * *g: Display data as a gang block header 1941 * *i: Display as an indirect block 1942 * p: Do I/O to physical offset 1943 * r: Dump raw data to stdout 1944 * 1945 * * = not yet implemented 1946 */ 1947 static void 1948 zdb_read_block(char *thing, spa_t **spap) 1949 { 1950 spa_t *spa = *spap; 1951 int flags = 0; 1952 uint64_t offset = 0, size = 0, blkptr_offset = 0; 1953 zio_t *zio; 1954 vdev_t *vd; 1955 void *buf; 1956 char *s, *p, *dup, *spa_name, *vdev, *flagstr; 1957 int i, error, zio_flags; 1958 1959 dup = strdup(thing); 1960 s = strtok(dup, ":"); 1961 spa_name = s ? s : ""; 1962 s = strtok(NULL, ":"); 1963 vdev = s ? s : ""; 1964 s = strtok(NULL, ":"); 1965 offset = strtoull(s ? s : "", NULL, 16); 1966 s = strtok(NULL, ":"); 1967 size = strtoull(s ? s : "", NULL, 16); 1968 s = strtok(NULL, ":"); 1969 flagstr = s ? s : ""; 1970 1971 s = NULL; 1972 if (size == 0) 1973 s = "size must not be zero"; 1974 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 1975 s = "size must be a multiple of sector size"; 1976 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 1977 s = "offset must be a multiple of sector size"; 1978 if (s) { 1979 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 1980 free(dup); 1981 return; 1982 } 1983 1984 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 1985 for (i = 0; flagstr[i]; i++) { 1986 int bit = flagbits[(uchar_t)flagstr[i]]; 1987 1988 if (bit == 0) { 1989 (void) printf("***Invalid flag: %c\n", 1990 flagstr[i]); 1991 continue; 1992 } 1993 flags |= bit; 1994 1995 /* If it's not something with an argument, keep going */ 1996 if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS | 1997 ZDB_FLAG_PRINT_BLKPTR)) == 0) 1998 continue; 1999 2000 p = &flagstr[i + 1]; 2001 if (bit == ZDB_FLAG_PRINT_BLKPTR) 2002 blkptr_offset = strtoull(p, &p, 16); 2003 if (*p != ':' && *p != '\0') { 2004 (void) printf("***Invalid flag arg: '%s'\n", s); 2005 free(dup); 2006 return; 2007 } 2008 } 2009 } 2010 2011 if (spa == NULL || spa->spa_name == NULL || 2012 strcmp(spa->spa_name, spa_name)) { 2013 if (spa && spa->spa_name) 2014 spa_close(spa, (void *)zdb_read_block); 2015 error = spa_open(spa_name, spap, (void *)zdb_read_block); 2016 if (error) 2017 fatal("Failed to open pool '%s': %s", 2018 spa_name, strerror(error)); 2019 spa = *spap; 2020 } 2021 2022 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 2023 if (vd == NULL) { 2024 (void) printf("***Invalid vdev: %s\n", vdev); 2025 free(dup); 2026 return; 2027 } else { 2028 if (vd->vdev_path) 2029 (void) printf("Found vdev: %s\n", vd->vdev_path); 2030 else 2031 (void) printf("Found vdev type: %s\n", 2032 vd->vdev_ops->vdev_op_type); 2033 } 2034 2035 buf = umem_alloc(size, UMEM_NOFAIL); 2036 2037 zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 2038 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK; 2039 2040 if (flags & ZDB_FLAG_PHYS) 2041 zio_flags |= ZIO_FLAG_PHYSICAL; 2042 2043 zio = zio_root(spa, NULL, NULL, 0); 2044 /* XXX todo - cons up a BP so RAID-Z will be happy */ 2045 zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size, 2046 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL)); 2047 error = zio_wait(zio); 2048 2049 if (error) { 2050 (void) printf("Read of %s failed, error: %d\n", thing, error); 2051 goto out; 2052 } 2053 2054 if (flags & ZDB_FLAG_PRINT_BLKPTR) 2055 zdb_print_blkptr((blkptr_t *)(void *) 2056 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 2057 else if (flags & ZDB_FLAG_RAW) 2058 zdb_dump_block_raw(buf, size, flags); 2059 else if (flags & ZDB_FLAG_INDIRECT) 2060 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 2061 flags); 2062 else if (flags & ZDB_FLAG_GBH) 2063 zdb_dump_gbh(buf, flags); 2064 else 2065 zdb_dump_block(thing, buf, size, flags); 2066 2067 out: 2068 umem_free(buf, size); 2069 free(dup); 2070 } 2071 2072 static boolean_t 2073 nvlist_string_match(nvlist_t *config, char *name, char *tgt) 2074 { 2075 char *s; 2076 2077 verify(nvlist_lookup_string(config, name, &s) == 0); 2078 return (strcmp(s, tgt) == 0); 2079 } 2080 2081 static boolean_t 2082 nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt) 2083 { 2084 uint64_t val; 2085 2086 verify(nvlist_lookup_uint64(config, name, &val) == 0); 2087 return (val == tgt); 2088 } 2089 2090 static boolean_t 2091 vdev_child_guid_match(nvlist_t *vdev, uint64_t guid) 2092 { 2093 nvlist_t **child; 2094 uint_t c, children; 2095 2096 verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN, 2097 &child, &children) == 0); 2098 for (c = 0; c < children; ++c) 2099 if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid)) 2100 return (B_TRUE); 2101 return (B_FALSE); 2102 } 2103 2104 static boolean_t 2105 vdev_child_string_match(nvlist_t *vdev, char *tgt) 2106 { 2107 nvlist_t **child; 2108 uint_t c, children; 2109 2110 verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN, 2111 &child, &children) == 0); 2112 for (c = 0; c < children; ++c) { 2113 if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) || 2114 nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt)) 2115 return (B_TRUE); 2116 } 2117 return (B_FALSE); 2118 } 2119 2120 static boolean_t 2121 vdev_guid_match(nvlist_t *config, uint64_t guid) 2122 { 2123 nvlist_t *nvroot; 2124 2125 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2126 &nvroot) == 0); 2127 2128 return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) || 2129 vdev_child_guid_match(nvroot, guid)); 2130 } 2131 2132 static boolean_t 2133 vdev_string_match(nvlist_t *config, char *tgt) 2134 { 2135 nvlist_t *nvroot; 2136 2137 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2138 &nvroot) == 0); 2139 2140 return (vdev_child_string_match(nvroot, tgt)); 2141 } 2142 2143 static boolean_t 2144 pool_match(nvlist_t *config, char *tgt) 2145 { 2146 uint64_t guid = strtoull(tgt, NULL, 0); 2147 2148 if (guid != 0) { 2149 return ( 2150 nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) || 2151 vdev_guid_match(config, guid)); 2152 } else { 2153 return ( 2154 nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) || 2155 vdev_string_match(config, tgt)); 2156 } 2157 } 2158 2159 static int 2160 find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir) 2161 { 2162 nvlist_t *pools; 2163 int error = ENOENT; 2164 nvlist_t *match = NULL; 2165 2166 if (vdev_dir != NULL) 2167 pools = zpool_find_import(g_zfs, 1, &vdev_dir); 2168 else 2169 pools = zpool_find_import(g_zfs, 0, NULL); 2170 2171 if (pools != NULL) { 2172 nvpair_t *elem = NULL; 2173 2174 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) { 2175 verify(nvpair_value_nvlist(elem, configp) == 0); 2176 if (pool_match(*configp, pool_id)) { 2177 if (match != NULL) { 2178 (void) fatal( 2179 "More than one matching pool - " 2180 "specify guid/devid/device path."); 2181 } else { 2182 match = *configp; 2183 error = 0; 2184 } 2185 } 2186 } 2187 } 2188 2189 *configp = error ? NULL : match; 2190 2191 return (error); 2192 } 2193 2194 int 2195 main(int argc, char **argv) 2196 { 2197 int i, c; 2198 struct rlimit rl = { 1024, 1024 }; 2199 spa_t *spa; 2200 objset_t *os = NULL; 2201 char *endstr; 2202 int dump_all = 1; 2203 int verbose = 0; 2204 int error; 2205 int flag, set; 2206 int exported = 0; 2207 char *vdev_dir = NULL; 2208 2209 (void) setrlimit(RLIMIT_NOFILE, &rl); 2210 (void) enable_extended_FILE_stdio(-1, -1); 2211 2212 dprintf_setup(&argc, argv); 2213 2214 while ((c = getopt(argc, argv, "udibcsvCLO:B:UlRep:")) != -1) { 2215 switch (c) { 2216 case 'u': 2217 case 'd': 2218 case 'i': 2219 case 'b': 2220 case 'c': 2221 case 's': 2222 case 'C': 2223 case 'l': 2224 case 'R': 2225 dump_opt[c]++; 2226 dump_all = 0; 2227 break; 2228 case 'L': 2229 dump_opt[c]++; 2230 break; 2231 case 'O': 2232 endstr = optarg; 2233 if (endstr[0] == '!') { 2234 endstr++; 2235 set = 0; 2236 } else { 2237 set = 1; 2238 } 2239 if (strcmp(endstr, "post") == 0) { 2240 flag = ADVANCE_PRE; 2241 set = !set; 2242 } else if (strcmp(endstr, "pre") == 0) { 2243 flag = ADVANCE_PRE; 2244 } else if (strcmp(endstr, "prune") == 0) { 2245 flag = ADVANCE_PRUNE; 2246 } else if (strcmp(endstr, "data") == 0) { 2247 flag = ADVANCE_DATA; 2248 } else if (strcmp(endstr, "holes") == 0) { 2249 flag = ADVANCE_HOLES; 2250 } else { 2251 usage(); 2252 } 2253 if (set) 2254 zdb_advance |= flag; 2255 else 2256 zdb_advance &= ~flag; 2257 break; 2258 case 'B': 2259 endstr = optarg - 1; 2260 zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0); 2261 zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0); 2262 zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0); 2263 zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16); 2264 (void) printf("simulating bad block " 2265 "<%llu, %llu, %lld, %llx>\n", 2266 (u_longlong_t)zdb_noread.zb_objset, 2267 (u_longlong_t)zdb_noread.zb_object, 2268 (u_longlong_t)zdb_noread.zb_level, 2269 (u_longlong_t)zdb_noread.zb_blkid); 2270 break; 2271 case 'v': 2272 verbose++; 2273 break; 2274 case 'U': 2275 spa_config_dir = "/tmp"; 2276 break; 2277 case 'e': 2278 exported = 1; 2279 break; 2280 case 'p': 2281 vdev_dir = optarg; 2282 break; 2283 default: 2284 usage(); 2285 break; 2286 } 2287 } 2288 2289 if (vdev_dir != NULL && exported == 0) 2290 (void) fatal("-p option requires use of -e\n"); 2291 2292 kernel_init(FREAD); 2293 g_zfs = libzfs_init(); 2294 ASSERT(g_zfs != NULL); 2295 2296 /* 2297 * Disable vdev caching. If we don't do this, live pool traversal 2298 * won't make progress because it will never see disk updates. 2299 */ 2300 zfs_vdev_cache_size = 0; 2301 2302 for (c = 0; c < 256; c++) { 2303 if (dump_all && c != 'L' && c != 'l' && c != 'R') 2304 dump_opt[c] = 1; 2305 if (dump_opt[c]) 2306 dump_opt[c] += verbose; 2307 } 2308 2309 argc -= optind; 2310 argv += optind; 2311 2312 if (argc < 1) { 2313 if (dump_opt['C']) { 2314 dump_config(NULL); 2315 return (0); 2316 } 2317 usage(); 2318 } 2319 2320 if (dump_opt['l']) { 2321 dump_label(argv[0]); 2322 return (0); 2323 } 2324 2325 if (dump_opt['R']) { 2326 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 2327 flagbits['c'] = ZDB_FLAG_CHECKSUM; 2328 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 2329 flagbits['e'] = ZDB_FLAG_BSWAP; 2330 flagbits['g'] = ZDB_FLAG_GBH; 2331 flagbits['i'] = ZDB_FLAG_INDIRECT; 2332 flagbits['p'] = ZDB_FLAG_PHYS; 2333 flagbits['r'] = ZDB_FLAG_RAW; 2334 2335 spa = NULL; 2336 while (argv[0]) { 2337 zdb_read_block(argv[0], &spa); 2338 argv++; 2339 argc--; 2340 } 2341 if (spa) 2342 spa_close(spa, (void *)zdb_read_block); 2343 return (0); 2344 } 2345 2346 if (dump_opt['C']) 2347 dump_config(argv[0]); 2348 2349 if (exported == 0) { 2350 if (strchr(argv[0], '/') != NULL) { 2351 error = dmu_objset_open(argv[0], DMU_OST_ANY, 2352 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 2353 } else { 2354 error = spa_open(argv[0], &spa, FTAG); 2355 } 2356 } else { 2357 /* 2358 * Check to see if the name refers to an exported zpool 2359 */ 2360 nvlist_t *exported_conf = NULL; 2361 2362 error = find_exported_zpool(argv[0], &exported_conf, vdev_dir); 2363 if (error == 0) { 2364 error = spa_import(argv[0], exported_conf, vdev_dir); 2365 if (error == 0) 2366 error = spa_open(argv[0], &spa, FTAG); 2367 } 2368 } 2369 2370 if (error) 2371 fatal("can't open %s: %s", argv[0], strerror(error)); 2372 2373 argv++; 2374 if (--argc > 0) { 2375 zopt_objects = argc; 2376 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 2377 for (i = 0; i < zopt_objects; i++) { 2378 errno = 0; 2379 zopt_object[i] = strtoull(argv[i], NULL, 0); 2380 if (zopt_object[i] == 0 && errno != 0) 2381 fatal("bad object number %s: %s", 2382 argv[i], strerror(errno)); 2383 } 2384 } 2385 2386 if (os != NULL) { 2387 dump_dir(os); 2388 dmu_objset_close(os); 2389 } else { 2390 dump_zpool(spa); 2391 spa_close(spa, FTAG); 2392 } 2393 2394 libzfs_fini(g_zfs); 2395 kernel_fini(); 2396 2397 return (0); 2398 } 2399