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 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t)); 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 V0 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 dump_acl, /* ZFS ACL */ 944 dump_uint8, /* ZFS SYSACL */ 945 dump_none, /* FUID nvlist */ 946 dump_packed_nvlist, /* FUID nvlist size */ 947 }; 948 949 static void 950 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 951 { 952 dmu_buf_t *db = NULL; 953 dmu_object_info_t doi; 954 dnode_t *dn; 955 void *bonus = NULL; 956 size_t bsize = 0; 957 char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6]; 958 char aux[50]; 959 int error; 960 961 if (*print_header) { 962 (void) printf("\n Object lvl iblk dblk lsize" 963 " asize type\n"); 964 *print_header = 0; 965 } 966 967 if (object == 0) { 968 dn = os->os->os_meta_dnode; 969 } else { 970 error = dmu_bonus_hold(os, object, FTAG, &db); 971 if (error) 972 fatal("dmu_bonus_hold(%llu) failed, errno %u", 973 object, error); 974 bonus = db->db_data; 975 bsize = db->db_size; 976 dn = ((dmu_buf_impl_t *)db)->db_dnode; 977 } 978 dmu_object_info_from_dnode(dn, &doi); 979 980 nicenum(doi.doi_metadata_block_size, iblk); 981 nicenum(doi.doi_data_block_size, dblk); 982 nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1), 983 lsize); 984 nicenum(doi.doi_physical_blks << 9, asize); 985 nicenum(doi.doi_bonus_size, bonus_size); 986 987 aux[0] = '\0'; 988 989 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 990 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 991 zio_checksum_table[doi.doi_checksum].ci_name); 992 } 993 994 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 995 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 996 zio_compress_table[doi.doi_compress].ci_name); 997 } 998 999 (void) printf("%10lld %3u %5s %5s %5s %5s %s%s\n", 1000 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize, 1001 asize, dmu_ot[doi.doi_type].ot_name, aux); 1002 1003 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 1004 (void) printf("%10s %3s %5s %5s %5s %5s %s\n", 1005 "", "", "", "", bonus_size, "bonus", 1006 dmu_ot[doi.doi_bonus_type].ot_name); 1007 } 1008 1009 if (verbosity >= 4) { 1010 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize); 1011 object_viewer[doi.doi_type](os, object, NULL, 0); 1012 *print_header = 1; 1013 } 1014 1015 if (verbosity >= 5) 1016 dump_indirect(os, object, NULL, 0); 1017 1018 if (verbosity >= 5) { 1019 /* 1020 * Report the list of segments that comprise the object. 1021 */ 1022 uint64_t start = 0; 1023 uint64_t end; 1024 uint64_t blkfill = 1; 1025 int minlvl = 1; 1026 1027 if (dn->dn_type == DMU_OT_DNODE) { 1028 minlvl = 0; 1029 blkfill = DNODES_PER_BLOCK; 1030 } 1031 1032 for (;;) { 1033 error = dnode_next_offset(dn, B_FALSE, &start, minlvl, 1034 blkfill, 0); 1035 if (error) 1036 break; 1037 end = start; 1038 error = dnode_next_offset(dn, B_TRUE, &end, minlvl, 1039 blkfill, 0); 1040 nicenum(end - start, segsize); 1041 (void) printf("\t\tsegment [%016llx, %016llx)" 1042 " size %5s\n", (u_longlong_t)start, 1043 (u_longlong_t)end, segsize); 1044 if (error) 1045 break; 1046 start = end; 1047 } 1048 } 1049 1050 if (db != NULL) 1051 dmu_buf_rele(db, FTAG); 1052 } 1053 1054 static char *objset_types[DMU_OST_NUMTYPES] = { 1055 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1056 1057 /*ARGSUSED*/ 1058 static void 1059 dump_dir(objset_t *os) 1060 { 1061 dmu_objset_stats_t dds; 1062 uint64_t object, object_count; 1063 uint64_t refdbytes, usedobjs, scratch; 1064 char numbuf[8]; 1065 char blkbuf[BP_SPRINTF_LEN]; 1066 char osname[MAXNAMELEN]; 1067 char *type = "UNKNOWN"; 1068 int verbosity = dump_opt['d']; 1069 int print_header = 1; 1070 int i, error; 1071 1072 dmu_objset_fast_stat(os, &dds); 1073 1074 if (dds.dds_type < DMU_OST_NUMTYPES) 1075 type = objset_types[dds.dds_type]; 1076 1077 if (dds.dds_type == DMU_OST_META) { 1078 dds.dds_creation_txg = TXG_INITIAL; 1079 usedobjs = os->os->os_rootbp->blk_fill; 1080 refdbytes = 1081 os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes; 1082 } else { 1083 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 1084 } 1085 1086 ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill); 1087 1088 nicenum(refdbytes, numbuf); 1089 1090 if (verbosity >= 4) { 1091 (void) strcpy(blkbuf, ", rootbp "); 1092 sprintf_blkptr(blkbuf + strlen(blkbuf), 1093 BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp); 1094 } else { 1095 blkbuf[0] = '\0'; 1096 } 1097 1098 dmu_objset_name(os, osname); 1099 1100 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 1101 "%s, %llu objects%s\n", 1102 osname, type, (u_longlong_t)dmu_objset_id(os), 1103 (u_longlong_t)dds.dds_creation_txg, 1104 numbuf, (u_longlong_t)usedobjs, blkbuf); 1105 1106 dump_intent_log(dmu_objset_zil(os)); 1107 1108 if (dmu_objset_ds(os) != NULL) 1109 dump_bplist(dmu_objset_pool(os)->dp_meta_objset, 1110 dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist"); 1111 1112 if (verbosity < 2) 1113 return; 1114 1115 if (zopt_objects != 0) { 1116 for (i = 0; i < zopt_objects; i++) 1117 dump_object(os, zopt_object[i], verbosity, 1118 &print_header); 1119 (void) printf("\n"); 1120 return; 1121 } 1122 1123 dump_object(os, 0, verbosity, &print_header); 1124 object_count = 1; 1125 1126 object = 0; 1127 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 1128 dump_object(os, object, verbosity, &print_header); 1129 object_count++; 1130 } 1131 1132 ASSERT3U(object_count, ==, usedobjs); 1133 1134 (void) printf("\n"); 1135 1136 if (error != ESRCH) 1137 fatal("dmu_object_next() = %d", error); 1138 } 1139 1140 static void 1141 dump_uberblock(uberblock_t *ub) 1142 { 1143 time_t timestamp = ub->ub_timestamp; 1144 1145 (void) printf("Uberblock\n\n"); 1146 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 1147 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 1148 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 1149 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 1150 (void) printf("\ttimestamp = %llu UTC = %s", 1151 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 1152 if (dump_opt['u'] >= 3) { 1153 char blkbuf[BP_SPRINTF_LEN]; 1154 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp); 1155 (void) printf("\trootbp = %s\n", blkbuf); 1156 } 1157 (void) printf("\n"); 1158 } 1159 1160 static void 1161 dump_config(const char *pool) 1162 { 1163 spa_t *spa = NULL; 1164 1165 mutex_enter(&spa_namespace_lock); 1166 while ((spa = spa_next(spa)) != NULL) { 1167 if (pool == NULL) 1168 (void) printf("%s\n", spa_name(spa)); 1169 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0) 1170 dump_nvlist(spa->spa_config, 4); 1171 } 1172 mutex_exit(&spa_namespace_lock); 1173 } 1174 1175 static void 1176 dump_label(const char *dev) 1177 { 1178 int fd; 1179 vdev_label_t label; 1180 char *buf = label.vl_vdev_phys.vp_nvlist; 1181 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 1182 struct stat64 statbuf; 1183 uint64_t psize; 1184 int l; 1185 1186 if ((fd = open64(dev, O_RDONLY)) < 0) { 1187 (void) printf("cannot open '%s': %s\n", dev, strerror(errno)); 1188 exit(1); 1189 } 1190 1191 if (fstat64(fd, &statbuf) != 0) { 1192 (void) printf("failed to stat '%s': %s\n", dev, 1193 strerror(errno)); 1194 exit(1); 1195 } 1196 1197 psize = statbuf.st_size; 1198 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 1199 1200 for (l = 0; l < VDEV_LABELS; l++) { 1201 1202 nvlist_t *config = NULL; 1203 1204 (void) printf("--------------------------------------------\n"); 1205 (void) printf("LABEL %d\n", l); 1206 (void) printf("--------------------------------------------\n"); 1207 1208 if (pread64(fd, &label, sizeof (label), 1209 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 1210 (void) printf("failed to read label %d\n", l); 1211 continue; 1212 } 1213 1214 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 1215 (void) printf("failed to unpack label %d\n", l); 1216 continue; 1217 } 1218 dump_nvlist(config, 4); 1219 nvlist_free(config); 1220 } 1221 } 1222 1223 /*ARGSUSED*/ 1224 static int 1225 dump_one_dir(char *dsname, void *arg) 1226 { 1227 int error; 1228 objset_t *os; 1229 1230 error = dmu_objset_open(dsname, DMU_OST_ANY, 1231 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1232 if (error) { 1233 (void) printf("Could not open %s\n", dsname); 1234 return (0); 1235 } 1236 dump_dir(os); 1237 dmu_objset_close(os); 1238 return (0); 1239 } 1240 1241 static void 1242 zdb_space_map_load(spa_t *spa) 1243 { 1244 vdev_t *rvd = spa->spa_root_vdev; 1245 vdev_t *vd; 1246 int c, m, error; 1247 1248 for (c = 0; c < rvd->vdev_children; c++) { 1249 vd = rvd->vdev_child[c]; 1250 for (m = 0; m < vd->vdev_ms_count; m++) { 1251 metaslab_t *msp = vd->vdev_ms[m]; 1252 mutex_enter(&msp->ms_lock); 1253 error = space_map_load(&msp->ms_allocmap[0], NULL, 1254 SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset); 1255 mutex_exit(&msp->ms_lock); 1256 if (error) 1257 fatal("%s bad space map #%d, error %d", 1258 spa->spa_name, c, error); 1259 } 1260 } 1261 } 1262 1263 static int 1264 zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb) 1265 { 1266 dva_t *dva = bp->blk_dva; 1267 vdev_t *vd; 1268 metaslab_t *msp; 1269 space_map_t *allocmap, *freemap; 1270 int error; 1271 int d; 1272 blkptr_t blk = *bp; 1273 1274 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1275 uint64_t vdev = DVA_GET_VDEV(&dva[d]); 1276 uint64_t offset = DVA_GET_OFFSET(&dva[d]); 1277 uint64_t size = DVA_GET_ASIZE(&dva[d]); 1278 1279 if ((vd = vdev_lookup_top(spa, vdev)) == NULL) 1280 return (ENXIO); 1281 1282 if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count) 1283 return (ENXIO); 1284 1285 msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 1286 allocmap = &msp->ms_allocmap[0]; 1287 freemap = &msp->ms_freemap[0]; 1288 1289 /* Prepare our copy of the bp in case we need to read GBHs */ 1290 if (DVA_GET_GANG(&dva[d])) { 1291 size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE); 1292 DVA_SET_ASIZE(&blk.blk_dva[d], size); 1293 DVA_SET_GANG(&blk.blk_dva[d], 0); 1294 } 1295 1296 mutex_enter(&msp->ms_lock); 1297 if (space_map_contains(freemap, offset, size)) { 1298 mutex_exit(&msp->ms_lock); 1299 return (EAGAIN); /* allocated more than once */ 1300 } 1301 1302 if (!space_map_contains(allocmap, offset, size)) { 1303 mutex_exit(&msp->ms_lock); 1304 return (ESTALE); /* not allocated at all */ 1305 } 1306 1307 space_map_remove(allocmap, offset, size); 1308 space_map_add(freemap, offset, size); 1309 1310 mutex_exit(&msp->ms_lock); 1311 } 1312 1313 if (BP_IS_GANG(bp)) { 1314 zio_gbh_phys_t gbh; 1315 int g; 1316 1317 /* LINTED - compile time assert */ 1318 ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE); 1319 1320 BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER); 1321 BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE); 1322 BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE); 1323 BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF); 1324 error = zio_wait(zio_read(NULL, spa, &blk, &gbh, 1325 SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ, 1326 ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb)); 1327 if (error) 1328 return (error); 1329 if (BP_SHOULD_BYTESWAP(&blk)) 1330 byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE); 1331 for (g = 0; g < SPA_GBH_NBLKPTRS; g++) { 1332 if (BP_IS_HOLE(&gbh.zg_blkptr[g])) 1333 break; 1334 error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb); 1335 if (error) 1336 return (error); 1337 } 1338 } 1339 1340 return (0); 1341 } 1342 1343 static void 1344 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size) 1345 { 1346 metaslab_t *msp; 1347 1348 /* LINTED */ 1349 msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0])); 1350 1351 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 1352 (u_longlong_t)msp->ms_group->mg_vd->vdev_id, 1353 (u_longlong_t)start, 1354 (u_longlong_t)size); 1355 } 1356 1357 static void 1358 zdb_space_map_unload(spa_t *spa) 1359 { 1360 vdev_t *rvd = spa->spa_root_vdev; 1361 vdev_t *vd; 1362 int c, m; 1363 1364 for (c = 0; c < rvd->vdev_children; c++) { 1365 vd = rvd->vdev_child[c]; 1366 for (m = 0; m < vd->vdev_ms_count; m++) { 1367 metaslab_t *msp = vd->vdev_ms[m]; 1368 mutex_enter(&msp->ms_lock); 1369 space_map_vacate(&msp->ms_allocmap[0], zdb_leak, 1370 &msp->ms_allocmap[0]); 1371 space_map_unload(&msp->ms_allocmap[0]); 1372 space_map_vacate(&msp->ms_freemap[0], NULL, NULL); 1373 mutex_exit(&msp->ms_lock); 1374 } 1375 } 1376 } 1377 1378 static void 1379 zdb_refresh_ubsync(spa_t *spa) 1380 { 1381 uberblock_t ub = { 0 }; 1382 vdev_t *rvd = spa->spa_root_vdev; 1383 zio_t *zio; 1384 1385 /* 1386 * Reload the uberblock. 1387 */ 1388 zio = zio_root(spa, NULL, NULL, 1389 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); 1390 vdev_uberblock_load(zio, rvd, &ub); 1391 (void) zio_wait(zio); 1392 1393 if (ub.ub_txg != 0) 1394 spa->spa_ubsync = ub; 1395 } 1396 1397 /* 1398 * Verify that the sum of the sizes of all blocks in the pool adds up 1399 * to the SPA's sa_alloc total. 1400 */ 1401 typedef struct zdb_blkstats { 1402 uint64_t zb_asize; 1403 uint64_t zb_lsize; 1404 uint64_t zb_psize; 1405 uint64_t zb_count; 1406 } zdb_blkstats_t; 1407 1408 #define DMU_OT_DEFERRED DMU_OT_NONE 1409 #define DMU_OT_TOTAL DMU_OT_NUMTYPES 1410 1411 #define ZB_TOTAL ZB_MAXLEVEL 1412 1413 typedef struct zdb_cb { 1414 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1]; 1415 uint64_t zcb_errors[256]; 1416 traverse_blk_cache_t *zcb_cache; 1417 int zcb_readfails; 1418 int zcb_haderrors; 1419 } zdb_cb_t; 1420 1421 static void 1422 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type) 1423 { 1424 int i, error; 1425 1426 for (i = 0; i < 4; i++) { 1427 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 1428 int t = (i & 1) ? type : DMU_OT_TOTAL; 1429 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 1430 1431 zb->zb_asize += BP_GET_ASIZE(bp); 1432 zb->zb_lsize += BP_GET_LSIZE(bp); 1433 zb->zb_psize += BP_GET_PSIZE(bp); 1434 zb->zb_count++; 1435 } 1436 1437 if (dump_opt['L']) 1438 return; 1439 1440 error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark); 1441 1442 if (error == 0) 1443 return; 1444 1445 if (error == EAGAIN) 1446 (void) fatal("double-allocation, bp=%p", bp); 1447 1448 if (error == ESTALE) 1449 (void) fatal("reference to freed block, bp=%p", bp); 1450 1451 (void) fatal("fatal error %d in bp %p", error, bp); 1452 } 1453 1454 static int 1455 zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg) 1456 { 1457 zbookmark_t *zb = &bc->bc_bookmark; 1458 zdb_cb_t *zcb = arg; 1459 blkptr_t *bp = &bc->bc_blkptr; 1460 dmu_object_type_t type = BP_GET_TYPE(bp); 1461 char blkbuf[BP_SPRINTF_LEN]; 1462 int error = 0; 1463 1464 if (bc->bc_errno) { 1465 if (zcb->zcb_readfails++ < 10 && dump_opt['L']) { 1466 zdb_refresh_ubsync(spa); 1467 error = EAGAIN; 1468 } else { 1469 zcb->zcb_haderrors = 1; 1470 zcb->zcb_errors[bc->bc_errno]++; 1471 error = ERESTART; 1472 } 1473 1474 if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno)) 1475 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1476 else 1477 blkbuf[0] = '\0'; 1478 1479 (void) printf("zdb_blkptr_cb: Got error %d reading " 1480 "<%llu, %llu, %lld, %llx> %s -- %s\n", 1481 bc->bc_errno, 1482 (u_longlong_t)zb->zb_objset, 1483 (u_longlong_t)zb->zb_object, 1484 (u_longlong_t)zb->zb_level, 1485 (u_longlong_t)zb->zb_blkid, 1486 blkbuf, 1487 error == EAGAIN ? "retrying" : "skipping"); 1488 1489 return (error); 1490 } 1491 1492 zcb->zcb_readfails = 0; 1493 1494 ASSERT(!BP_IS_HOLE(bp)); 1495 1496 if (dump_opt['b'] >= 4) { 1497 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1498 (void) printf("objset %llu object %llu offset 0x%llx %s\n", 1499 (u_longlong_t)zb->zb_objset, 1500 (u_longlong_t)zb->zb_object, 1501 (u_longlong_t)blkid2offset(bc->bc_dnode, 1502 zb->zb_level, zb->zb_blkid), blkbuf); 1503 } 1504 1505 zdb_count_block(spa, zcb, bp, type); 1506 1507 return (0); 1508 } 1509 1510 static int 1511 dump_block_stats(spa_t *spa) 1512 { 1513 traverse_handle_t *th; 1514 zdb_cb_t zcb = { 0 }; 1515 traverse_blk_cache_t dummy_cache = { 0 }; 1516 zdb_blkstats_t *zb, *tzb; 1517 uint64_t alloc, space, logalloc; 1518 vdev_t *rvd = spa->spa_root_vdev; 1519 int leaks = 0; 1520 int advance = zdb_advance; 1521 int c, e, flags; 1522 1523 zcb.zcb_cache = &dummy_cache; 1524 1525 if (dump_opt['c']) 1526 advance |= ADVANCE_DATA; 1527 1528 advance |= ADVANCE_PRUNE | ADVANCE_ZIL; 1529 1530 (void) printf("\nTraversing all blocks to %sverify" 1531 " nothing leaked ...\n", 1532 dump_opt['c'] ? "verify checksums and " : ""); 1533 1534 /* 1535 * Load all space maps. As we traverse the pool, if we find a block 1536 * that's not in its space map, that indicates a double-allocation, 1537 * reference to a freed block, or an unclaimed block. Otherwise we 1538 * remove the block from the space map. If the space maps are not 1539 * empty when we're done, that indicates leaked blocks. 1540 */ 1541 if (!dump_opt['L']) 1542 zdb_space_map_load(spa); 1543 1544 /* 1545 * If there's a deferred-free bplist, process that first. 1546 */ 1547 if (spa->spa_sync_bplist_obj != 0) { 1548 bplist_t *bpl = &spa->spa_sync_bplist; 1549 blkptr_t blk; 1550 uint64_t itor = 0; 1551 1552 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset, 1553 spa->spa_sync_bplist_obj)); 1554 1555 while (bplist_iterate(bpl, &itor, &blk) == 0) { 1556 if (dump_opt['b'] >= 4) { 1557 char blkbuf[BP_SPRINTF_LEN]; 1558 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk); 1559 (void) printf("[%s] %s\n", 1560 "deferred free", blkbuf); 1561 } 1562 zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED); 1563 } 1564 1565 bplist_close(bpl); 1566 } 1567 1568 /* 1569 * Now traverse the pool. If we're reading all data to verify 1570 * checksums, do a scrubbing read so that we validate all copies. 1571 */ 1572 flags = ZIO_FLAG_CANFAIL; 1573 if (advance & ADVANCE_DATA) 1574 flags |= ZIO_FLAG_SCRUB; 1575 th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags); 1576 th->th_noread = zdb_noread; 1577 1578 traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES); 1579 1580 while (traverse_more(th) == EAGAIN) 1581 continue; 1582 1583 traverse_fini(th); 1584 1585 if (zcb.zcb_haderrors) { 1586 (void) printf("\nError counts:\n\n"); 1587 (void) printf("\t%5s %s\n", "errno", "count"); 1588 for (e = 0; e < 256; e++) { 1589 if (zcb.zcb_errors[e] != 0) { 1590 (void) printf("\t%5d %llu\n", 1591 e, (u_longlong_t)zcb.zcb_errors[e]); 1592 } 1593 } 1594 } 1595 1596 /* 1597 * Report any leaked segments. 1598 */ 1599 if (!dump_opt['L']) 1600 zdb_space_map_unload(spa); 1601 1602 if (dump_opt['L']) 1603 (void) printf("\n\n *** Live pool traversal; " 1604 "block counts are only approximate ***\n\n"); 1605 1606 alloc = spa_get_alloc(spa); 1607 space = spa_get_space(spa); 1608 1609 /* 1610 * Log blocks allocated from a separate log device don't count 1611 * as part of the normal pool space; factor them in here. 1612 */ 1613 logalloc = 0; 1614 1615 for (c = 0; c < rvd->vdev_children; c++) 1616 if (rvd->vdev_child[c]->vdev_islog) 1617 logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc; 1618 1619 tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL]; 1620 1621 if (tzb->zb_asize == alloc + logalloc) { 1622 (void) printf("\n\tNo leaks (block sum matches space" 1623 " maps exactly)\n"); 1624 } else { 1625 (void) printf("block traversal size %llu != alloc %llu " 1626 "(leaked %lld)\n", 1627 (u_longlong_t)tzb->zb_asize, 1628 (u_longlong_t)alloc + logalloc, 1629 (u_longlong_t)(alloc + logalloc - tzb->zb_asize)); 1630 leaks = 1; 1631 } 1632 1633 if (tzb->zb_count == 0) 1634 return (2); 1635 1636 (void) printf("\n"); 1637 (void) printf("\tbp count: %10llu\n", 1638 (u_longlong_t)tzb->zb_count); 1639 (void) printf("\tbp logical: %10llu\t avg: %6llu\n", 1640 (u_longlong_t)tzb->zb_lsize, 1641 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 1642 (void) printf("\tbp physical: %10llu\t avg:" 1643 " %6llu\tcompression: %6.2f\n", 1644 (u_longlong_t)tzb->zb_psize, 1645 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 1646 (double)tzb->zb_lsize / tzb->zb_psize); 1647 (void) printf("\tbp allocated: %10llu\t avg:" 1648 " %6llu\tcompression: %6.2f\n", 1649 (u_longlong_t)tzb->zb_asize, 1650 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 1651 (double)tzb->zb_lsize / tzb->zb_asize); 1652 (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n", 1653 (u_longlong_t)alloc, 100.0 * alloc / space); 1654 1655 if (dump_opt['b'] >= 2) { 1656 int l, t, level; 1657 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 1658 "\t avg\t comp\t%%Total\tType\n"); 1659 1660 for (t = 0; t <= DMU_OT_NUMTYPES; t++) { 1661 char csize[6], lsize[6], psize[6], asize[6], avg[6]; 1662 char *typename; 1663 1664 typename = t == DMU_OT_DEFERRED ? "deferred free" : 1665 t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name; 1666 1667 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 1668 (void) printf("%6s\t%5s\t%5s\t%5s" 1669 "\t%5s\t%5s\t%6s\t%s\n", 1670 "-", 1671 "-", 1672 "-", 1673 "-", 1674 "-", 1675 "-", 1676 "-", 1677 typename); 1678 continue; 1679 } 1680 1681 for (l = ZB_TOTAL - 1; l >= -1; l--) { 1682 level = (l == -1 ? ZB_TOTAL : l); 1683 zb = &zcb.zcb_type[level][t]; 1684 1685 if (zb->zb_asize == 0) 1686 continue; 1687 1688 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 1689 continue; 1690 1691 if (level == 0 && zb->zb_asize == 1692 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 1693 continue; 1694 1695 nicenum(zb->zb_count, csize); 1696 nicenum(zb->zb_lsize, lsize); 1697 nicenum(zb->zb_psize, psize); 1698 nicenum(zb->zb_asize, asize); 1699 nicenum(zb->zb_asize / zb->zb_count, avg); 1700 1701 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 1702 "\t%5.2f\t%6.2f\t", 1703 csize, lsize, psize, asize, avg, 1704 (double)zb->zb_lsize / zb->zb_psize, 1705 100.0 * zb->zb_asize / tzb->zb_asize); 1706 1707 if (level == ZB_TOTAL) 1708 (void) printf("%s\n", typename); 1709 else 1710 (void) printf(" L%d %s\n", 1711 level, typename); 1712 } 1713 } 1714 } 1715 1716 (void) printf("\n"); 1717 1718 if (leaks) 1719 return (2); 1720 1721 if (zcb.zcb_haderrors) 1722 return (3); 1723 1724 return (0); 1725 } 1726 1727 static void 1728 dump_zpool(spa_t *spa) 1729 { 1730 dsl_pool_t *dp = spa_get_dsl(spa); 1731 int rc = 0; 1732 1733 if (dump_opt['u']) 1734 dump_uberblock(&spa->spa_uberblock); 1735 1736 if (dump_opt['d'] || dump_opt['i']) { 1737 dump_dir(dp->dp_meta_objset); 1738 if (dump_opt['d'] >= 3) { 1739 dump_bplist(dp->dp_meta_objset, 1740 spa->spa_sync_bplist_obj, "Deferred frees"); 1741 dump_dtl(spa->spa_root_vdev, 0); 1742 dump_metaslabs(spa); 1743 } 1744 (void) dmu_objset_find(spa->spa_name, dump_one_dir, NULL, 1745 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 1746 } 1747 1748 if (dump_opt['b'] || dump_opt['c']) 1749 rc = dump_block_stats(spa); 1750 1751 if (dump_opt['s']) 1752 show_pool_stats(spa); 1753 1754 if (rc != 0) 1755 exit(rc); 1756 } 1757 1758 #define ZDB_FLAG_CHECKSUM 0x0001 1759 #define ZDB_FLAG_DECOMPRESS 0x0002 1760 #define ZDB_FLAG_BSWAP 0x0004 1761 #define ZDB_FLAG_GBH 0x0008 1762 #define ZDB_FLAG_INDIRECT 0x0010 1763 #define ZDB_FLAG_PHYS 0x0020 1764 #define ZDB_FLAG_RAW 0x0040 1765 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 1766 1767 int flagbits[256]; 1768 1769 static void 1770 zdb_print_blkptr(blkptr_t *bp, int flags) 1771 { 1772 dva_t *dva = bp->blk_dva; 1773 int d; 1774 1775 if (flags & ZDB_FLAG_BSWAP) 1776 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 1777 /* 1778 * Super-ick warning: This code is also duplicated in 1779 * cmd/mdb/common/modules/zfs/zfs.c . Yeah, I hate code 1780 * replication, too. 1781 */ 1782 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1783 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d, 1784 (longlong_t)DVA_GET_VDEV(&dva[d]), 1785 (longlong_t)DVA_GET_OFFSET(&dva[d])); 1786 (void) printf("\tDVA[%d]: GANG: %-5s GRID: %04llx\t" 1787 "ASIZE: %llx\n", d, 1788 DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE", 1789 (longlong_t)DVA_GET_GRID(&dva[d]), 1790 (longlong_t)DVA_GET_ASIZE(&dva[d])); 1791 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d, 1792 (u_longlong_t)DVA_GET_VDEV(&dva[d]), 1793 (longlong_t)DVA_GET_OFFSET(&dva[d]), 1794 (longlong_t)BP_GET_PSIZE(bp), 1795 BP_SHOULD_BYTESWAP(bp) ? "e" : "", 1796 !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ? 1797 "d" : "", 1798 DVA_GET_GANG(&dva[d]) ? "g" : "", 1799 BP_GET_COMPRESS(bp) != 0 ? "d" : ""); 1800 } 1801 (void) printf("\tLSIZE: %-16llx\t\tPSIZE: %llx\n", 1802 (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp)); 1803 (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE: %s\n", 1804 BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG", 1805 dmu_ot[BP_GET_TYPE(bp)].ot_name); 1806 (void) printf("\tBIRTH: %-16llx LEVEL: %-2llu\tFILL: %llx\n", 1807 (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp), 1808 (u_longlong_t)bp->blk_fill); 1809 (void) printf("\tCKFUNC: %-16s\t\tCOMP: %s\n", 1810 zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name, 1811 zio_compress_table[BP_GET_COMPRESS(bp)].ci_name); 1812 (void) printf("\tCKSUM: %llx:%llx:%llx:%llx\n", 1813 (u_longlong_t)bp->blk_cksum.zc_word[0], 1814 (u_longlong_t)bp->blk_cksum.zc_word[1], 1815 (u_longlong_t)bp->blk_cksum.zc_word[2], 1816 (u_longlong_t)bp->blk_cksum.zc_word[3]); 1817 } 1818 1819 static void 1820 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 1821 { 1822 int i; 1823 1824 for (i = 0; i < nbps; i++) 1825 zdb_print_blkptr(&bp[i], flags); 1826 } 1827 1828 static void 1829 zdb_dump_gbh(void *buf, int flags) 1830 { 1831 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 1832 } 1833 1834 static void 1835 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 1836 { 1837 if (flags & ZDB_FLAG_BSWAP) 1838 byteswap_uint64_array(buf, size); 1839 (void) write(2, buf, size); 1840 } 1841 1842 static void 1843 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 1844 { 1845 uint64_t *d = (uint64_t *)buf; 1846 int nwords = size / sizeof (uint64_t); 1847 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 1848 int i, j; 1849 char *hdr, *c; 1850 1851 1852 if (do_bswap) 1853 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 1854 else 1855 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 1856 1857 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 1858 1859 for (i = 0; i < nwords; i += 2) { 1860 (void) printf("%06llx: %016llx %016llx ", 1861 (u_longlong_t)(i * sizeof (uint64_t)), 1862 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 1863 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 1864 1865 c = (char *)&d[i]; 1866 for (j = 0; j < 2 * sizeof (uint64_t); j++) 1867 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 1868 (void) printf("\n"); 1869 } 1870 } 1871 1872 /* 1873 * There are two acceptable formats: 1874 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 1875 * child[.child]* - For example: 0.1.1 1876 * 1877 * The second form can be used to specify arbitrary vdevs anywhere 1878 * in the heirarchy. For example, in a pool with a mirror of 1879 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 1880 */ 1881 static vdev_t * 1882 zdb_vdev_lookup(vdev_t *vdev, char *path) 1883 { 1884 char *s, *p, *q; 1885 int i; 1886 1887 if (vdev == NULL) 1888 return (NULL); 1889 1890 /* First, assume the x.x.x.x format */ 1891 i = (int)strtoul(path, &s, 10); 1892 if (s == path || (s && *s != '.' && *s != '\0')) 1893 goto name; 1894 if (i < 0 || i >= vdev->vdev_children) 1895 return (NULL); 1896 1897 vdev = vdev->vdev_child[i]; 1898 if (*s == '\0') 1899 return (vdev); 1900 return (zdb_vdev_lookup(vdev, s+1)); 1901 1902 name: 1903 for (i = 0; i < vdev->vdev_children; i++) { 1904 vdev_t *vc = vdev->vdev_child[i]; 1905 1906 if (vc->vdev_path == NULL) { 1907 vc = zdb_vdev_lookup(vc, path); 1908 if (vc == NULL) 1909 continue; 1910 else 1911 return (vc); 1912 } 1913 1914 p = strrchr(vc->vdev_path, '/'); 1915 p = p ? p + 1 : vc->vdev_path; 1916 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 1917 1918 if (strcmp(vc->vdev_path, path) == 0) 1919 return (vc); 1920 if (strcmp(p, path) == 0) 1921 return (vc); 1922 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 1923 return (vc); 1924 } 1925 1926 return (NULL); 1927 } 1928 1929 /* 1930 * Read a block from a pool and print it out. The syntax of the 1931 * block descriptor is: 1932 * 1933 * pool:vdev_specifier:offset:size[:flags] 1934 * 1935 * pool - The name of the pool you wish to read from 1936 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 1937 * offset - offset, in hex, in bytes 1938 * size - Amount of data to read, in hex, in bytes 1939 * flags - A string of characters specifying options 1940 * b: Decode a blkptr at given offset within block 1941 * *c: Calculate and display checksums 1942 * *d: Decompress data before dumping 1943 * e: Byteswap data before dumping 1944 * *g: Display data as a gang block header 1945 * *i: Display as an indirect block 1946 * p: Do I/O to physical offset 1947 * r: Dump raw data to stdout 1948 * 1949 * * = not yet implemented 1950 */ 1951 static void 1952 zdb_read_block(char *thing, spa_t **spap) 1953 { 1954 spa_t *spa = *spap; 1955 int flags = 0; 1956 uint64_t offset = 0, size = 0, blkptr_offset = 0; 1957 zio_t *zio; 1958 vdev_t *vd; 1959 void *buf; 1960 char *s, *p, *dup, *spa_name, *vdev, *flagstr; 1961 int i, error, zio_flags; 1962 1963 dup = strdup(thing); 1964 s = strtok(dup, ":"); 1965 spa_name = s ? s : ""; 1966 s = strtok(NULL, ":"); 1967 vdev = s ? s : ""; 1968 s = strtok(NULL, ":"); 1969 offset = strtoull(s ? s : "", NULL, 16); 1970 s = strtok(NULL, ":"); 1971 size = strtoull(s ? s : "", NULL, 16); 1972 s = strtok(NULL, ":"); 1973 flagstr = s ? s : ""; 1974 1975 s = NULL; 1976 if (size == 0) 1977 s = "size must not be zero"; 1978 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 1979 s = "size must be a multiple of sector size"; 1980 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 1981 s = "offset must be a multiple of sector size"; 1982 if (s) { 1983 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 1984 free(dup); 1985 return; 1986 } 1987 1988 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 1989 for (i = 0; flagstr[i]; i++) { 1990 int bit = flagbits[(uchar_t)flagstr[i]]; 1991 1992 if (bit == 0) { 1993 (void) printf("***Invalid flag: %c\n", 1994 flagstr[i]); 1995 continue; 1996 } 1997 flags |= bit; 1998 1999 /* If it's not something with an argument, keep going */ 2000 if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS | 2001 ZDB_FLAG_PRINT_BLKPTR)) == 0) 2002 continue; 2003 2004 p = &flagstr[i + 1]; 2005 if (bit == ZDB_FLAG_PRINT_BLKPTR) 2006 blkptr_offset = strtoull(p, &p, 16); 2007 if (*p != ':' && *p != '\0') { 2008 (void) printf("***Invalid flag arg: '%s'\n", s); 2009 free(dup); 2010 return; 2011 } 2012 } 2013 } 2014 2015 if (spa == NULL || spa->spa_name == NULL || 2016 strcmp(spa->spa_name, spa_name)) { 2017 if (spa && spa->spa_name) 2018 spa_close(spa, (void *)zdb_read_block); 2019 error = spa_open(spa_name, spap, (void *)zdb_read_block); 2020 if (error) 2021 fatal("Failed to open pool '%s': %s", 2022 spa_name, strerror(error)); 2023 spa = *spap; 2024 } 2025 2026 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 2027 if (vd == NULL) { 2028 (void) printf("***Invalid vdev: %s\n", vdev); 2029 free(dup); 2030 return; 2031 } else { 2032 if (vd->vdev_path) 2033 (void) printf("Found vdev: %s\n", vd->vdev_path); 2034 else 2035 (void) printf("Found vdev type: %s\n", 2036 vd->vdev_ops->vdev_op_type); 2037 } 2038 2039 buf = umem_alloc(size, UMEM_NOFAIL); 2040 2041 zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 2042 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK; 2043 2044 if (flags & ZDB_FLAG_PHYS) 2045 zio_flags |= ZIO_FLAG_PHYSICAL; 2046 2047 zio = zio_root(spa, NULL, NULL, 0); 2048 /* XXX todo - cons up a BP so RAID-Z will be happy */ 2049 zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size, 2050 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL)); 2051 error = zio_wait(zio); 2052 2053 if (error) { 2054 (void) printf("Read of %s failed, error: %d\n", thing, error); 2055 goto out; 2056 } 2057 2058 if (flags & ZDB_FLAG_PRINT_BLKPTR) 2059 zdb_print_blkptr((blkptr_t *)(void *) 2060 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 2061 else if (flags & ZDB_FLAG_RAW) 2062 zdb_dump_block_raw(buf, size, flags); 2063 else if (flags & ZDB_FLAG_INDIRECT) 2064 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 2065 flags); 2066 else if (flags & ZDB_FLAG_GBH) 2067 zdb_dump_gbh(buf, flags); 2068 else 2069 zdb_dump_block(thing, buf, size, flags); 2070 2071 out: 2072 umem_free(buf, size); 2073 free(dup); 2074 } 2075 2076 static boolean_t 2077 nvlist_string_match(nvlist_t *config, char *name, char *tgt) 2078 { 2079 char *s; 2080 2081 verify(nvlist_lookup_string(config, name, &s) == 0); 2082 return (strcmp(s, tgt) == 0); 2083 } 2084 2085 static boolean_t 2086 nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt) 2087 { 2088 uint64_t val; 2089 2090 verify(nvlist_lookup_uint64(config, name, &val) == 0); 2091 return (val == tgt); 2092 } 2093 2094 static boolean_t 2095 vdev_child_guid_match(nvlist_t *vdev, uint64_t guid) 2096 { 2097 nvlist_t **child; 2098 uint_t c, children; 2099 2100 verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN, 2101 &child, &children) == 0); 2102 for (c = 0; c < children; ++c) 2103 if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid)) 2104 return (B_TRUE); 2105 return (B_FALSE); 2106 } 2107 2108 static boolean_t 2109 vdev_child_string_match(nvlist_t *vdev, char *tgt) 2110 { 2111 nvlist_t **child; 2112 uint_t c, children; 2113 2114 verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN, 2115 &child, &children) == 0); 2116 for (c = 0; c < children; ++c) { 2117 if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) || 2118 nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt)) 2119 return (B_TRUE); 2120 } 2121 return (B_FALSE); 2122 } 2123 2124 static boolean_t 2125 vdev_guid_match(nvlist_t *config, uint64_t guid) 2126 { 2127 nvlist_t *nvroot; 2128 2129 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2130 &nvroot) == 0); 2131 2132 return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) || 2133 vdev_child_guid_match(nvroot, guid)); 2134 } 2135 2136 static boolean_t 2137 vdev_string_match(nvlist_t *config, char *tgt) 2138 { 2139 nvlist_t *nvroot; 2140 2141 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2142 &nvroot) == 0); 2143 2144 return (vdev_child_string_match(nvroot, tgt)); 2145 } 2146 2147 static boolean_t 2148 pool_match(nvlist_t *config, char *tgt) 2149 { 2150 uint64_t guid = strtoull(tgt, NULL, 0); 2151 2152 if (guid != 0) { 2153 return ( 2154 nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) || 2155 vdev_guid_match(config, guid)); 2156 } else { 2157 return ( 2158 nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) || 2159 vdev_string_match(config, tgt)); 2160 } 2161 } 2162 2163 static int 2164 find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir) 2165 { 2166 nvlist_t *pools; 2167 int error = ENOENT; 2168 nvlist_t *match = NULL; 2169 2170 if (vdev_dir != NULL) 2171 pools = zpool_find_import(g_zfs, 1, &vdev_dir); 2172 else 2173 pools = zpool_find_import(g_zfs, 0, NULL); 2174 2175 if (pools != NULL) { 2176 nvpair_t *elem = NULL; 2177 2178 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) { 2179 verify(nvpair_value_nvlist(elem, configp) == 0); 2180 if (pool_match(*configp, pool_id)) { 2181 if (match != NULL) { 2182 (void) fatal( 2183 "More than one matching pool - " 2184 "specify guid/devid/device path."); 2185 } else { 2186 match = *configp; 2187 error = 0; 2188 } 2189 } 2190 } 2191 } 2192 2193 *configp = error ? NULL : match; 2194 2195 return (error); 2196 } 2197 2198 int 2199 main(int argc, char **argv) 2200 { 2201 int i, c; 2202 struct rlimit rl = { 1024, 1024 }; 2203 spa_t *spa; 2204 objset_t *os = NULL; 2205 char *endstr; 2206 int dump_all = 1; 2207 int verbose = 0; 2208 int error; 2209 int flag, set; 2210 int exported = 0; 2211 char *vdev_dir = NULL; 2212 2213 (void) setrlimit(RLIMIT_NOFILE, &rl); 2214 (void) enable_extended_FILE_stdio(-1, -1); 2215 2216 dprintf_setup(&argc, argv); 2217 2218 while ((c = getopt(argc, argv, "udibcsvCLO:B:UlRep:")) != -1) { 2219 switch (c) { 2220 case 'u': 2221 case 'd': 2222 case 'i': 2223 case 'b': 2224 case 'c': 2225 case 's': 2226 case 'C': 2227 case 'l': 2228 case 'R': 2229 dump_opt[c]++; 2230 dump_all = 0; 2231 break; 2232 case 'L': 2233 dump_opt[c]++; 2234 break; 2235 case 'O': 2236 endstr = optarg; 2237 if (endstr[0] == '!') { 2238 endstr++; 2239 set = 0; 2240 } else { 2241 set = 1; 2242 } 2243 if (strcmp(endstr, "post") == 0) { 2244 flag = ADVANCE_PRE; 2245 set = !set; 2246 } else if (strcmp(endstr, "pre") == 0) { 2247 flag = ADVANCE_PRE; 2248 } else if (strcmp(endstr, "prune") == 0) { 2249 flag = ADVANCE_PRUNE; 2250 } else if (strcmp(endstr, "data") == 0) { 2251 flag = ADVANCE_DATA; 2252 } else if (strcmp(endstr, "holes") == 0) { 2253 flag = ADVANCE_HOLES; 2254 } else { 2255 usage(); 2256 } 2257 if (set) 2258 zdb_advance |= flag; 2259 else 2260 zdb_advance &= ~flag; 2261 break; 2262 case 'B': 2263 endstr = optarg - 1; 2264 zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0); 2265 zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0); 2266 zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0); 2267 zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16); 2268 (void) printf("simulating bad block " 2269 "<%llu, %llu, %lld, %llx>\n", 2270 (u_longlong_t)zdb_noread.zb_objset, 2271 (u_longlong_t)zdb_noread.zb_object, 2272 (u_longlong_t)zdb_noread.zb_level, 2273 (u_longlong_t)zdb_noread.zb_blkid); 2274 break; 2275 case 'v': 2276 verbose++; 2277 break; 2278 case 'U': 2279 spa_config_dir = "/tmp"; 2280 break; 2281 case 'e': 2282 exported = 1; 2283 break; 2284 case 'p': 2285 vdev_dir = optarg; 2286 break; 2287 default: 2288 usage(); 2289 break; 2290 } 2291 } 2292 2293 if (vdev_dir != NULL && exported == 0) 2294 (void) fatal("-p option requires use of -e\n"); 2295 2296 kernel_init(FREAD); 2297 g_zfs = libzfs_init(); 2298 ASSERT(g_zfs != NULL); 2299 2300 /* 2301 * Disable vdev caching. If we don't do this, live pool traversal 2302 * won't make progress because it will never see disk updates. 2303 */ 2304 zfs_vdev_cache_size = 0; 2305 2306 for (c = 0; c < 256; c++) { 2307 if (dump_all && c != 'L' && c != 'l' && c != 'R') 2308 dump_opt[c] = 1; 2309 if (dump_opt[c]) 2310 dump_opt[c] += verbose; 2311 } 2312 2313 argc -= optind; 2314 argv += optind; 2315 2316 if (argc < 1) { 2317 if (dump_opt['C']) { 2318 dump_config(NULL); 2319 return (0); 2320 } 2321 usage(); 2322 } 2323 2324 if (dump_opt['l']) { 2325 dump_label(argv[0]); 2326 return (0); 2327 } 2328 2329 if (dump_opt['R']) { 2330 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 2331 flagbits['c'] = ZDB_FLAG_CHECKSUM; 2332 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 2333 flagbits['e'] = ZDB_FLAG_BSWAP; 2334 flagbits['g'] = ZDB_FLAG_GBH; 2335 flagbits['i'] = ZDB_FLAG_INDIRECT; 2336 flagbits['p'] = ZDB_FLAG_PHYS; 2337 flagbits['r'] = ZDB_FLAG_RAW; 2338 2339 spa = NULL; 2340 while (argv[0]) { 2341 zdb_read_block(argv[0], &spa); 2342 argv++; 2343 argc--; 2344 } 2345 if (spa) 2346 spa_close(spa, (void *)zdb_read_block); 2347 return (0); 2348 } 2349 2350 if (dump_opt['C']) 2351 dump_config(argv[0]); 2352 2353 if (exported == 0) { 2354 if (strchr(argv[0], '/') != NULL) { 2355 error = dmu_objset_open(argv[0], DMU_OST_ANY, 2356 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 2357 } else { 2358 error = spa_open(argv[0], &spa, FTAG); 2359 } 2360 } else { 2361 /* 2362 * Check to see if the name refers to an exported zpool 2363 */ 2364 nvlist_t *exported_conf = NULL; 2365 2366 error = find_exported_zpool(argv[0], &exported_conf, vdev_dir); 2367 if (error == 0) { 2368 nvlist_t *nvl = NULL; 2369 2370 if (vdev_dir != NULL) { 2371 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 2372 error = ENOMEM; 2373 else if (nvlist_add_string(nvl, 2374 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), 2375 vdev_dir) != 0) 2376 error = ENOMEM; 2377 } 2378 2379 if (error == 0) 2380 error = spa_import(argv[0], exported_conf, nvl); 2381 if (error == 0) 2382 error = spa_open(argv[0], &spa, FTAG); 2383 2384 nvlist_free(nvl); 2385 } 2386 } 2387 2388 if (error) 2389 fatal("can't open %s: %s", argv[0], strerror(error)); 2390 2391 argv++; 2392 if (--argc > 0) { 2393 zopt_objects = argc; 2394 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 2395 for (i = 0; i < zopt_objects; i++) { 2396 errno = 0; 2397 zopt_object[i] = strtoull(argv[i], NULL, 0); 2398 if (zopt_object[i] == 0 && errno != 0) 2399 fatal("bad object number %s: %s", 2400 argv[i], strerror(errno)); 2401 } 2402 } 2403 2404 if (os != NULL) { 2405 dump_dir(os); 2406 dmu_objset_close(os); 2407 } else { 2408 dump_zpool(spa); 2409 spa_close(spa, FTAG); 2410 } 2411 2412 libzfs_fini(g_zfs); 2413 kernel_fini(); 2414 2415 return (0); 2416 } 2417