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