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 2006 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" }; 377 378 if (smo->smo_object == 0) 379 return; 380 381 /* 382 * Print out the freelist entries in both encoded and decoded form. 383 */ 384 alloc = 0; 385 for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) { 386 VERIFY(0 == dmu_read(os, smo->smo_object, offset, 387 sizeof (entry), &entry)); 388 if (SM_DEBUG_DECODE(entry)) { 389 (void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n", 390 (u_longlong_t)(offset / sizeof (entry)), 391 ddata[SM_DEBUG_ACTION_DECODE(entry)], 392 SM_DEBUG_TXG_DECODE(entry), 393 SM_DEBUG_SYNCPASS_DECODE(entry)); 394 } else { 395 (void) printf("\t\t[%4llu] %c range:" 396 " %08llx-%08llx size: %06llx\n", 397 (u_longlong_t)(offset / sizeof (entry)), 398 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 399 (SM_OFFSET_DECODE(entry) << mapshift) + mapstart, 400 (SM_OFFSET_DECODE(entry) << mapshift) + mapstart + 401 (SM_RUN_DECODE(entry) << mapshift), 402 (SM_RUN_DECODE(entry) << mapshift)); 403 if (SM_TYPE_DECODE(entry) == SM_ALLOC) 404 alloc += SM_RUN_DECODE(entry) << mapshift; 405 else 406 alloc -= SM_RUN_DECODE(entry) << mapshift; 407 } 408 } 409 if (alloc != smo->smo_alloc) { 410 (void) printf("space_map_object alloc (%llu) INCONSISTENT " 411 "with space map summary (%llu)\n", 412 (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc); 413 } 414 } 415 416 static void 417 dump_metaslab(metaslab_t *msp) 418 { 419 char freebuf[5]; 420 space_map_obj_t *smo = &msp->ms_smo; 421 vdev_t *vd = msp->ms_group->mg_vd; 422 spa_t *spa = vd->vdev_spa; 423 424 nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf); 425 426 if (dump_opt['d'] <= 5) { 427 (void) printf("\t%10llx %10llu %5s\n", 428 (u_longlong_t)msp->ms_map.sm_start, 429 (u_longlong_t)smo->smo_object, 430 freebuf); 431 return; 432 } 433 434 (void) printf( 435 "\tvdev %llu offset %08llx spacemap %4llu free %5s\n", 436 (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start, 437 (u_longlong_t)smo->smo_object, freebuf); 438 439 ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift)); 440 441 dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map); 442 } 443 444 static void 445 dump_metaslabs(spa_t *spa) 446 { 447 vdev_t *rvd = spa->spa_root_vdev; 448 vdev_t *vd; 449 int c, m; 450 451 (void) printf("\nMetaslabs:\n"); 452 453 for (c = 0; c < rvd->vdev_children; c++) { 454 vd = rvd->vdev_child[c]; 455 456 spa_config_enter(spa, RW_READER, FTAG); 457 (void) printf("\n vdev %llu = %s\n\n", 458 (u_longlong_t)vd->vdev_id, vdev_description(vd)); 459 spa_config_exit(spa, FTAG); 460 461 if (dump_opt['d'] <= 5) { 462 (void) printf("\t%10s %10s %5s\n", 463 "offset", "spacemap", "free"); 464 (void) printf("\t%10s %10s %5s\n", 465 "------", "--------", "----"); 466 } 467 for (m = 0; m < vd->vdev_ms_count; m++) 468 dump_metaslab(vd->vdev_ms[m]); 469 (void) printf("\n"); 470 } 471 } 472 473 static void 474 dump_dtl(vdev_t *vd, int indent) 475 { 476 avl_tree_t *t = &vd->vdev_dtl_map.sm_root; 477 spa_t *spa = vd->vdev_spa; 478 space_seg_t *ss; 479 vdev_t *pvd; 480 int c; 481 482 if (indent == 0) 483 (void) printf("\nDirty time logs:\n\n"); 484 485 spa_config_enter(spa, RW_READER, FTAG); 486 (void) printf("\t%*s%s\n", indent, "", vdev_description(vd)); 487 spa_config_exit(spa, FTAG); 488 489 for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) { 490 /* 491 * Everything in this DTL must appear in all parent DTL unions. 492 */ 493 for (pvd = vd; pvd; pvd = pvd->vdev_parent) 494 ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map, 495 ss->ss_start, ss->ss_end - ss->ss_start)); 496 (void) printf("\t%*soutage [%llu,%llu] length %llu\n", 497 indent, "", 498 (u_longlong_t)ss->ss_start, 499 (u_longlong_t)ss->ss_end - 1, 500 (u_longlong_t)ss->ss_end - ss->ss_start); 501 } 502 503 (void) printf("\n"); 504 505 if (dump_opt['d'] > 5 && vd->vdev_children == 0) { 506 dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl, 507 &vd->vdev_dtl_map); 508 (void) printf("\n"); 509 } 510 511 for (c = 0; c < vd->vdev_children; c++) 512 dump_dtl(vd->vdev_child[c], indent + 4); 513 } 514 515 /*ARGSUSED*/ 516 static void 517 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 518 { 519 } 520 521 static uint64_t 522 blkid2offset(dnode_phys_t *dnp, int level, uint64_t blkid) 523 { 524 if (level < 0) 525 return (blkid); 526 527 return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 528 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 529 } 530 531 static void 532 sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas) 533 { 534 dva_t *dva = bp->blk_dva; 535 int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1; 536 int i; 537 538 blkbuf[0] = '\0'; 539 540 for (i = 0; i < ndvas; i++) 541 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ", 542 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 543 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 544 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 545 546 (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu", 547 (u_longlong_t)BP_GET_LSIZE(bp), 548 (u_longlong_t)BP_GET_PSIZE(bp), 549 (u_longlong_t)bp->blk_fill, 550 (u_longlong_t)bp->blk_birth); 551 } 552 553 /* ARGSUSED */ 554 static int 555 zdb_indirect_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) 556 { 557 zbookmark_t *zb = &bc->bc_bookmark; 558 blkptr_t *bp = &bc->bc_blkptr; 559 void *data = bc->bc_data; 560 dnode_phys_t *dnp = bc->bc_dnode; 561 char blkbuf[BP_SPRINTF_LEN + 80]; 562 int l; 563 564 if (bc->bc_errno) { 565 (void) sprintf(blkbuf, 566 "Error %d reading <%llu, %llu, %lld, %llu>: ", 567 bc->bc_errno, 568 (u_longlong_t)zb->zb_objset, 569 (u_longlong_t)zb->zb_object, 570 (u_longlong_t)zb->zb_level, 571 (u_longlong_t)zb->zb_blkid); 572 goto out; 573 } 574 575 if (zb->zb_level == -1) { 576 ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); 577 ASSERT3U(BP_GET_LEVEL(bp), ==, 0); 578 } else { 579 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 580 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 581 } 582 583 if (zb->zb_level > 0) { 584 uint64_t fill = 0; 585 blkptr_t *bpx, *bpend; 586 587 for (bpx = data, bpend = bpx + BP_GET_LSIZE(bp) / sizeof (*bpx); 588 bpx < bpend; bpx++) { 589 if (bpx->blk_birth != 0) { 590 fill += bpx->blk_fill; 591 } else { 592 ASSERT(bpx->blk_fill == 0); 593 } 594 } 595 ASSERT3U(fill, ==, bp->blk_fill); 596 } 597 598 if (zb->zb_level == 0 && dnp->dn_type == DMU_OT_DNODE) { 599 uint64_t fill = 0; 600 dnode_phys_t *dnx, *dnend; 601 602 for (dnx = data, dnend = dnx + (BP_GET_LSIZE(bp)>>DNODE_SHIFT); 603 dnx < dnend; dnx++) { 604 if (dnx->dn_type != DMU_OT_NONE) 605 fill++; 606 } 607 ASSERT3U(fill, ==, bp->blk_fill); 608 } 609 610 (void) sprintf(blkbuf, "%16llx ", 611 (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid)); 612 613 ASSERT(zb->zb_level >= 0); 614 615 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 616 if (l == zb->zb_level) { 617 (void) sprintf(blkbuf + strlen(blkbuf), "L%llx", 618 (u_longlong_t)zb->zb_level); 619 } else { 620 (void) sprintf(blkbuf + strlen(blkbuf), " "); 621 } 622 } 623 624 out: 625 if (bp->blk_birth == 0) { 626 (void) sprintf(blkbuf + strlen(blkbuf), "<hole>"); 627 (void) printf("%s\n", blkbuf); 628 } else { 629 sprintf_blkptr_compact(blkbuf + strlen(blkbuf), bp, 630 dump_opt['d'] > 5 ? 1 : 0); 631 (void) printf("%s\n", blkbuf); 632 } 633 634 return (bc->bc_errno ? ERESTART : 0); 635 } 636 637 /*ARGSUSED*/ 638 static void 639 dump_indirect(objset_t *os, uint64_t object, void *data, size_t size) 640 { 641 traverse_handle_t *th; 642 uint64_t objset = dmu_objset_id(os); 643 int advance = zdb_advance; 644 645 (void) printf("Indirect blocks:\n"); 646 647 if (object == 0) 648 advance |= ADVANCE_DATA; 649 650 th = traverse_init(dmu_objset_spa(os), zdb_indirect_cb, NULL, advance, 651 ZIO_FLAG_CANFAIL); 652 th->th_noread = zdb_noread; 653 654 traverse_add_dnode(th, 0, -1ULL, objset, object); 655 656 while (traverse_more(th) == EAGAIN) 657 continue; 658 659 (void) printf("\n"); 660 661 traverse_fini(th); 662 } 663 664 /*ARGSUSED*/ 665 static void 666 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 667 { 668 dsl_dir_phys_t *dd = data; 669 time_t crtime; 670 char used[6], compressed[6], uncompressed[6], quota[6], resv[6]; 671 672 if (dd == NULL) 673 return; 674 675 ASSERT(size == sizeof (*dd)); 676 677 crtime = dd->dd_creation_time; 678 nicenum(dd->dd_used_bytes, used); 679 nicenum(dd->dd_compressed_bytes, compressed); 680 nicenum(dd->dd_uncompressed_bytes, uncompressed); 681 nicenum(dd->dd_quota, quota); 682 nicenum(dd->dd_reserved, resv); 683 684 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 685 (void) printf("\t\thead_dataset_obj = %llu\n", 686 (u_longlong_t)dd->dd_head_dataset_obj); 687 (void) printf("\t\tparent_dir_obj = %llu\n", 688 (u_longlong_t)dd->dd_parent_obj); 689 (void) printf("\t\tclone_parent_obj = %llu\n", 690 (u_longlong_t)dd->dd_clone_parent_obj); 691 (void) printf("\t\tchild_dir_zapobj = %llu\n", 692 (u_longlong_t)dd->dd_child_dir_zapobj); 693 (void) printf("\t\tused_bytes = %s\n", used); 694 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 695 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 696 (void) printf("\t\tquota = %s\n", quota); 697 (void) printf("\t\treserved = %s\n", resv); 698 (void) printf("\t\tprops_zapobj = %llu\n", 699 (u_longlong_t)dd->dd_props_zapobj); 700 } 701 702 /*ARGSUSED*/ 703 static void 704 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 705 { 706 dsl_dataset_phys_t *ds = data; 707 time_t crtime; 708 char used[6], compressed[6], uncompressed[6], unique[6]; 709 char blkbuf[BP_SPRINTF_LEN]; 710 711 if (ds == NULL) 712 return; 713 714 ASSERT(size == sizeof (*ds)); 715 crtime = ds->ds_creation_time; 716 nicenum(ds->ds_used_bytes, used); 717 nicenum(ds->ds_compressed_bytes, compressed); 718 nicenum(ds->ds_uncompressed_bytes, uncompressed); 719 nicenum(ds->ds_unique_bytes, unique); 720 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp); 721 722 (void) printf("\t\tdataset_obj = %llu\n", 723 (u_longlong_t)ds->ds_dir_obj); 724 (void) printf("\t\tprev_snap_obj = %llu\n", 725 (u_longlong_t)ds->ds_prev_snap_obj); 726 (void) printf("\t\tprev_snap_txg = %llu\n", 727 (u_longlong_t)ds->ds_prev_snap_txg); 728 (void) printf("\t\tnext_snap_obj = %llu\n", 729 (u_longlong_t)ds->ds_next_snap_obj); 730 (void) printf("\t\tsnapnames_zapobj = %llu\n", 731 (u_longlong_t)ds->ds_snapnames_zapobj); 732 (void) printf("\t\tnum_children = %llu\n", 733 (u_longlong_t)ds->ds_num_children); 734 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 735 (void) printf("\t\tcreation_txg = %llu\n", 736 (u_longlong_t)ds->ds_creation_txg); 737 (void) printf("\t\tdeadlist_obj = %llu\n", 738 (u_longlong_t)ds->ds_deadlist_obj); 739 (void) printf("\t\tused_bytes = %s\n", used); 740 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 741 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 742 (void) printf("\t\tunique = %s\n", unique); 743 (void) printf("\t\tfsid_guid = %llu\n", 744 (u_longlong_t)ds->ds_fsid_guid); 745 (void) printf("\t\tguid = %llu\n", 746 (u_longlong_t)ds->ds_guid); 747 (void) printf("\t\tflags = %llx\n", 748 (u_longlong_t)ds->ds_flags); 749 (void) printf("\t\tbp = %s\n", blkbuf); 750 } 751 752 static void 753 dump_bplist(objset_t *mos, uint64_t object, char *name) 754 { 755 bplist_t bpl = { 0 }; 756 blkptr_t blk, *bp = &blk; 757 uint64_t itor = 0; 758 char bytes[6]; 759 char comp[6]; 760 char uncomp[6]; 761 762 if (dump_opt['d'] < 3) 763 return; 764 765 VERIFY(0 == bplist_open(&bpl, mos, object)); 766 if (bplist_empty(&bpl)) { 767 bplist_close(&bpl); 768 return; 769 } 770 771 nicenum(bpl.bpl_phys->bpl_bytes, bytes); 772 if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) { 773 nicenum(bpl.bpl_phys->bpl_comp, comp); 774 nicenum(bpl.bpl_phys->bpl_uncomp, uncomp); 775 (void) printf("\n %s: %llu entries, %s (%s/%s comp)\n", 776 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, 777 bytes, comp, uncomp); 778 } else { 779 (void) printf("\n %s: %llu entries, %s\n", 780 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes); 781 } 782 783 if (dump_opt['d'] < 5) { 784 bplist_close(&bpl); 785 return; 786 } 787 788 (void) printf("\n"); 789 790 while (bplist_iterate(&bpl, &itor, bp) == 0) { 791 char blkbuf[BP_SPRINTF_LEN]; 792 793 ASSERT(bp->blk_birth != 0); 794 sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0); 795 (void) printf("\tItem %3llu: %s\n", 796 (u_longlong_t)itor - 1, blkbuf); 797 } 798 799 bplist_close(&bpl); 800 } 801 802 static char * 803 znode_path(objset_t *os, uint64_t object, char *pathbuf, size_t size) 804 { 805 dmu_buf_t *db; 806 dmu_object_info_t doi; 807 znode_phys_t *zp; 808 uint64_t parent = 0; 809 size_t complen; 810 char component[MAXNAMELEN + 1]; 811 char *path; 812 int error; 813 814 path = pathbuf + size; 815 *--path = '\0'; 816 817 for (;;) { 818 error = dmu_bonus_hold(os, object, FTAG, &db); 819 if (error) 820 break; 821 822 dmu_object_info_from_db(db, &doi); 823 zp = db->db_data; 824 parent = zp->zp_parent; 825 dmu_buf_rele(db, FTAG); 826 827 if (doi.doi_bonus_type != DMU_OT_ZNODE) 828 break; 829 830 if (parent == object) { 831 if (path[0] != '/') 832 *--path = '/'; 833 return (path); 834 } 835 836 if (zap_value_search(os, parent, object, component) != 0) 837 break; 838 839 complen = strlen(component); 840 path -= complen; 841 bcopy(component, path, complen); 842 *--path = '/'; 843 844 object = parent; 845 } 846 847 (void) sprintf(component, "???<object#%llu>", (u_longlong_t)object); 848 849 complen = strlen(component); 850 path -= complen; 851 bcopy(component, path, complen); 852 853 return (path); 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 */ 863 864 ASSERT(size >= sizeof (znode_phys_t)); 865 866 if (dump_opt['d'] < 3) { 867 (void) printf("\t%s\n", 868 znode_path(os, object, path, sizeof (path))); 869 return; 870 } 871 872 z_crtime = (time_t)zp->zp_crtime[0]; 873 z_atime = (time_t)zp->zp_atime[0]; 874 z_mtime = (time_t)zp->zp_mtime[0]; 875 z_ctime = (time_t)zp->zp_ctime[0]; 876 877 (void) printf("\tpath %s\n", 878 znode_path(os, object, path, sizeof (path))); 879 (void) printf("\tatime %s", ctime(&z_atime)); 880 (void) printf("\tmtime %s", ctime(&z_mtime)); 881 (void) printf("\tctime %s", ctime(&z_ctime)); 882 (void) printf("\tcrtime %s", ctime(&z_crtime)); 883 (void) printf("\tgen %llu\n", (u_longlong_t)zp->zp_gen); 884 (void) printf("\tmode %llo\n", (u_longlong_t)zp->zp_mode); 885 (void) printf("\tsize %llu\n", (u_longlong_t)zp->zp_size); 886 (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent); 887 (void) printf("\tlinks %llu\n", (u_longlong_t)zp->zp_links); 888 (void) printf("\txattr %llu\n", (u_longlong_t)zp->zp_xattr); 889 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)zp->zp_rdev); 890 } 891 892 /*ARGSUSED*/ 893 static void 894 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 895 { 896 } 897 898 /*ARGSUSED*/ 899 static void 900 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 901 { 902 } 903 904 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = { 905 dump_none, /* unallocated */ 906 dump_zap, /* object directory */ 907 dump_uint64, /* object array */ 908 dump_none, /* packed nvlist */ 909 dump_packed_nvlist, /* packed nvlist size */ 910 dump_none, /* bplist */ 911 dump_none, /* bplist header */ 912 dump_none, /* SPA space map header */ 913 dump_none, /* SPA space map */ 914 dump_none, /* ZIL intent log */ 915 dump_dnode, /* DMU dnode */ 916 dump_dmu_objset, /* DMU objset */ 917 dump_dsl_dir, /* DSL directory */ 918 dump_zap, /* DSL directory child map */ 919 dump_zap, /* DSL dataset snap map */ 920 dump_zap, /* DSL props */ 921 dump_dsl_dataset, /* DSL dataset */ 922 dump_znode, /* ZFS znode */ 923 dump_acl, /* ZFS ACL */ 924 dump_uint8, /* ZFS plain file */ 925 dump_zap, /* ZFS directory */ 926 dump_zap, /* ZFS master node */ 927 dump_zap, /* ZFS delete queue */ 928 dump_uint8, /* zvol object */ 929 dump_zap, /* zvol prop */ 930 dump_uint8, /* other uint8[] */ 931 dump_uint64, /* other uint64[] */ 932 dump_zap, /* other ZAP */ 933 dump_zap, /* persistent error log */ 934 }; 935 936 static void 937 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 938 { 939 dmu_buf_t *db = NULL; 940 dmu_object_info_t doi; 941 dnode_t *dn; 942 void *bonus = NULL; 943 size_t bsize = 0; 944 char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6]; 945 char aux[50]; 946 int error; 947 948 if (*print_header) { 949 (void) printf("\n Object lvl iblk dblk lsize" 950 " asize type\n"); 951 *print_header = 0; 952 } 953 954 if (object == 0) { 955 dn = os->os->os_meta_dnode; 956 } else { 957 error = dmu_bonus_hold(os, object, FTAG, &db); 958 if (error) 959 fatal("dmu_bonus_hold(%llu) failed, errno %u", 960 object, error); 961 bonus = db->db_data; 962 bsize = db->db_size; 963 dn = ((dmu_buf_impl_t *)db)->db_dnode; 964 } 965 dmu_object_info_from_dnode(dn, &doi); 966 967 nicenum(doi.doi_metadata_block_size, iblk); 968 nicenum(doi.doi_data_block_size, dblk); 969 nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1), 970 lsize); 971 nicenum(doi.doi_physical_blks << 9, asize); 972 nicenum(doi.doi_bonus_size, bonus_size); 973 974 aux[0] = '\0'; 975 976 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) 977 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 978 zio_checksum_table[doi.doi_checksum].ci_name); 979 980 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) 981 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 982 zio_compress_table[doi.doi_compress].ci_name); 983 984 (void) printf("%10lld %3u %5s %5s %5s %5s %s%s\n", 985 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize, 986 asize, dmu_ot[doi.doi_type].ot_name, aux); 987 988 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 989 (void) printf("%10s %3s %5s %5s %5s %5s %s\n", 990 "", "", "", "", bonus_size, "bonus", 991 dmu_ot[doi.doi_bonus_type].ot_name); 992 } 993 994 if (verbosity >= 4) { 995 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize); 996 object_viewer[doi.doi_type](os, object, NULL, 0); 997 *print_header = 1; 998 } 999 1000 if (verbosity >= 5) 1001 dump_indirect(os, object, NULL, 0); 1002 1003 if (verbosity >= 5) { 1004 /* 1005 * Report the list of segments that comprise the object. 1006 */ 1007 uint64_t start = 0; 1008 uint64_t end; 1009 uint64_t blkfill = 1; 1010 int minlvl = 1; 1011 1012 if (dn->dn_type == DMU_OT_DNODE) { 1013 minlvl = 0; 1014 blkfill = DNODES_PER_BLOCK; 1015 } 1016 1017 for (;;) { 1018 error = dnode_next_offset(dn, B_FALSE, &start, minlvl, 1019 blkfill); 1020 if (error) 1021 break; 1022 end = start; 1023 error = dnode_next_offset(dn, B_TRUE, &end, minlvl, 1024 blkfill); 1025 nicenum(end - start, segsize); 1026 (void) printf("\t\tsegment [%016llx, %016llx)" 1027 " size %5s\n", (u_longlong_t)start, 1028 (u_longlong_t)end, segsize); 1029 if (error) 1030 break; 1031 start = end; 1032 } 1033 } 1034 1035 if (db != NULL) 1036 dmu_buf_rele(db, FTAG); 1037 } 1038 1039 static char *objset_types[DMU_OST_NUMTYPES] = { 1040 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1041 1042 /*ARGSUSED*/ 1043 static void 1044 dump_dir(objset_t *os) 1045 { 1046 dmu_objset_stats_t dds; 1047 uint64_t object, object_count; 1048 char numbuf[8]; 1049 char blkbuf[BP_SPRINTF_LEN]; 1050 char osname[MAXNAMELEN]; 1051 char *type = "UNKNOWN"; 1052 int verbosity = dump_opt['d']; 1053 int print_header = 1; 1054 int i, error; 1055 1056 dmu_objset_stats(os, &dds); 1057 1058 if (dds.dds_type < DMU_OST_NUMTYPES) 1059 type = objset_types[dds.dds_type]; 1060 1061 if (dds.dds_type == DMU_OST_META) { 1062 dds.dds_creation_txg = TXG_INITIAL; 1063 dds.dds_last_txg = os->os->os_rootbp.blk_birth; 1064 dds.dds_objects_used = os->os->os_rootbp.blk_fill; 1065 dds.dds_space_refd = 1066 os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes; 1067 } 1068 1069 ASSERT3U(dds.dds_objects_used, ==, os->os->os_rootbp.blk_fill); 1070 1071 nicenum(dds.dds_space_refd, numbuf); 1072 1073 if (verbosity >= 4) { 1074 (void) strcpy(blkbuf, ", rootbp "); 1075 sprintf_blkptr(blkbuf + strlen(blkbuf), 1076 BP_SPRINTF_LEN - strlen(blkbuf), &os->os->os_rootbp); 1077 } else { 1078 blkbuf[0] = '\0'; 1079 } 1080 1081 dmu_objset_name(os, osname); 1082 1083 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, last_txg %llu, " 1084 "%s, %llu objects%s\n", 1085 osname, type, (u_longlong_t)dmu_objset_id(os), 1086 (u_longlong_t)dds.dds_creation_txg, 1087 (u_longlong_t)dds.dds_last_txg, 1088 numbuf, 1089 (u_longlong_t)dds.dds_objects_used, 1090 blkbuf); 1091 1092 dump_intent_log(dmu_objset_zil(os)); 1093 1094 if (dmu_objset_ds(os) != NULL) 1095 dump_bplist(dmu_objset_pool(os)->dp_meta_objset, 1096 dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist"); 1097 1098 if (verbosity < 2) 1099 return; 1100 1101 if (zopt_objects != 0) { 1102 for (i = 0; i < zopt_objects; i++) 1103 dump_object(os, zopt_object[i], verbosity, 1104 &print_header); 1105 (void) printf("\n"); 1106 return; 1107 } 1108 1109 dump_object(os, 0, verbosity, &print_header); 1110 object_count = 1; 1111 1112 object = 0; 1113 while ((error = dmu_object_next(os, &object, B_FALSE)) == 0) { 1114 dump_object(os, object, verbosity, &print_header); 1115 object_count++; 1116 } 1117 1118 ASSERT3U(object_count, ==, dds.dds_objects_used); 1119 1120 (void) printf("\n"); 1121 1122 if (error != ESRCH) 1123 fatal("dmu_object_next() = %d", error); 1124 } 1125 1126 static void 1127 dump_uberblock(uberblock_t *ub) 1128 { 1129 time_t timestamp = ub->ub_timestamp; 1130 1131 (void) printf("Uberblock\n\n"); 1132 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 1133 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 1134 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 1135 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 1136 (void) printf("\ttimestamp = %llu UTC = %s", 1137 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 1138 if (dump_opt['u'] >= 3) { 1139 char blkbuf[BP_SPRINTF_LEN]; 1140 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp); 1141 (void) printf("\trootbp = %s\n", blkbuf); 1142 } 1143 (void) printf("\n"); 1144 } 1145 1146 static void 1147 dump_config(const char *pool) 1148 { 1149 spa_t *spa = NULL; 1150 1151 mutex_enter(&spa_namespace_lock); 1152 while ((spa = spa_next(spa)) != NULL) { 1153 if (pool == NULL) 1154 (void) printf("%s\n", spa_name(spa)); 1155 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0) 1156 dump_nvlist(spa->spa_config, 4); 1157 } 1158 mutex_exit(&spa_namespace_lock); 1159 } 1160 1161 static void 1162 dump_label(const char *dev) 1163 { 1164 int fd; 1165 vdev_label_t label; 1166 char *buf = label.vl_vdev_phys.vp_nvlist; 1167 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 1168 struct stat64 statbuf; 1169 uint64_t psize; 1170 int l; 1171 1172 if ((fd = open64(dev, O_RDONLY)) < 0) { 1173 (void) printf("cannot open '%s': %s\n", dev, strerror(errno)); 1174 exit(1); 1175 } 1176 1177 if (fstat64(fd, &statbuf) != 0) { 1178 (void) printf("failed to stat '%s': %s\n", dev, 1179 strerror(errno)); 1180 exit(1); 1181 } 1182 1183 psize = statbuf.st_size; 1184 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 1185 1186 for (l = 0; l < VDEV_LABELS; l++) { 1187 1188 nvlist_t *config = NULL; 1189 1190 (void) printf("--------------------------------------------\n"); 1191 (void) printf("LABEL %d\n", l); 1192 (void) printf("--------------------------------------------\n"); 1193 1194 if (pread64(fd, &label, sizeof (label), 1195 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 1196 (void) printf("failed to read label %d\n", l); 1197 continue; 1198 } 1199 1200 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 1201 (void) printf("failed to unpack label %d\n", l); 1202 continue; 1203 } 1204 dump_nvlist(config, 4); 1205 nvlist_free(config); 1206 } 1207 } 1208 1209 /*ARGSUSED*/ 1210 static int 1211 dump_one_dir(char *dsname, void *arg) 1212 { 1213 int error; 1214 objset_t *os; 1215 1216 error = dmu_objset_open(dsname, DMU_OST_ANY, 1217 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1218 if (error) { 1219 (void) printf("Could not open %s\n", dsname); 1220 return (0); 1221 } 1222 dump_dir(os); 1223 dmu_objset_close(os); 1224 return (0); 1225 } 1226 1227 static void 1228 zdb_space_map_load(spa_t *spa) 1229 { 1230 vdev_t *rvd = spa->spa_root_vdev; 1231 vdev_t *vd; 1232 int c, m, error; 1233 1234 for (c = 0; c < rvd->vdev_children; c++) { 1235 vd = rvd->vdev_child[c]; 1236 for (m = 0; m < vd->vdev_ms_count; m++) { 1237 metaslab_t *msp = vd->vdev_ms[m]; 1238 mutex_enter(&msp->ms_lock); 1239 error = space_map_load(&msp->ms_allocmap[0], NULL, 1240 SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset); 1241 mutex_exit(&msp->ms_lock); 1242 if (error) 1243 fatal("%s bad space map #%d, error %d", 1244 spa->spa_name, c, error); 1245 } 1246 } 1247 } 1248 1249 static int 1250 zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb) 1251 { 1252 dva_t *dva = bp->blk_dva; 1253 vdev_t *vd; 1254 metaslab_t *msp; 1255 space_map_t *allocmap, *freemap; 1256 int error; 1257 int d; 1258 blkptr_t blk = *bp; 1259 1260 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1261 uint64_t vdev = DVA_GET_VDEV(&dva[d]); 1262 uint64_t offset = DVA_GET_OFFSET(&dva[d]); 1263 uint64_t size = DVA_GET_ASIZE(&dva[d]); 1264 1265 if ((vd = vdev_lookup_top(spa, vdev)) == NULL) 1266 return (ENXIO); 1267 1268 if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count) 1269 return (ENXIO); 1270 1271 msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 1272 allocmap = &msp->ms_allocmap[0]; 1273 freemap = &msp->ms_freemap[0]; 1274 1275 /* Prepare our copy of the bp in case we need to read GBHs */ 1276 if (DVA_GET_GANG(&dva[d])) { 1277 size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE); 1278 DVA_SET_ASIZE(&blk.blk_dva[d], size); 1279 DVA_SET_GANG(&blk.blk_dva[d], 0); 1280 } 1281 1282 mutex_enter(&msp->ms_lock); 1283 if (space_map_contains(freemap, offset, size)) { 1284 mutex_exit(&msp->ms_lock); 1285 return (EAGAIN); /* allocated more than once */ 1286 } 1287 1288 if (!space_map_contains(allocmap, offset, size)) { 1289 mutex_exit(&msp->ms_lock); 1290 return (ESTALE); /* not allocated at all */ 1291 } 1292 1293 space_map_remove(allocmap, offset, size); 1294 space_map_add(freemap, offset, size); 1295 1296 mutex_exit(&msp->ms_lock); 1297 } 1298 1299 if (BP_IS_GANG(bp)) { 1300 zio_gbh_phys_t gbh; 1301 int g; 1302 1303 /* LINTED - compile time assert */ 1304 ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE); 1305 1306 BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER); 1307 BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE); 1308 BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE); 1309 BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF); 1310 error = zio_wait(zio_read(NULL, spa, &blk, &gbh, 1311 SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ, 1312 ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb)); 1313 if (error) 1314 return (error); 1315 if (BP_SHOULD_BYTESWAP(&blk)) 1316 byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE); 1317 for (g = 0; g < SPA_GBH_NBLKPTRS; g++) { 1318 if (BP_IS_HOLE(&gbh.zg_blkptr[g])) 1319 break; 1320 error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb); 1321 if (error) 1322 return (error); 1323 } 1324 } 1325 1326 return (0); 1327 } 1328 1329 static void 1330 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size) 1331 { 1332 metaslab_t *msp; 1333 1334 /* LINTED */ 1335 msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0])); 1336 1337 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 1338 (u_longlong_t)msp->ms_group->mg_vd->vdev_id, 1339 (u_longlong_t)start, 1340 (u_longlong_t)size); 1341 } 1342 1343 static void 1344 zdb_space_map_unload(spa_t *spa) 1345 { 1346 vdev_t *rvd = spa->spa_root_vdev; 1347 vdev_t *vd; 1348 int c, m; 1349 1350 for (c = 0; c < rvd->vdev_children; c++) { 1351 vd = rvd->vdev_child[c]; 1352 for (m = 0; m < vd->vdev_ms_count; m++) { 1353 metaslab_t *msp = vd->vdev_ms[m]; 1354 mutex_enter(&msp->ms_lock); 1355 space_map_vacate(&msp->ms_allocmap[0], zdb_leak, 1356 &msp->ms_allocmap[0]); 1357 space_map_unload(&msp->ms_allocmap[0]); 1358 space_map_vacate(&msp->ms_freemap[0], NULL, NULL); 1359 mutex_exit(&msp->ms_lock); 1360 } 1361 } 1362 } 1363 1364 static void 1365 zdb_refresh_ubsync(spa_t *spa) 1366 { 1367 uberblock_t ub = { 0 }; 1368 vdev_t *rvd = spa->spa_root_vdev; 1369 zio_t *zio; 1370 1371 /* 1372 * Reload the uberblock. 1373 */ 1374 zio = zio_root(spa, NULL, NULL, 1375 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); 1376 vdev_uberblock_load(zio, rvd, &ub); 1377 (void) zio_wait(zio); 1378 1379 if (ub.ub_txg != 0) 1380 spa->spa_ubsync = ub; 1381 } 1382 1383 /* 1384 * Verify that the sum of the sizes of all blocks in the pool adds up 1385 * to the SPA's sa_alloc total. 1386 */ 1387 typedef struct zdb_blkstats { 1388 uint64_t zb_asize; 1389 uint64_t zb_lsize; 1390 uint64_t zb_psize; 1391 uint64_t zb_count; 1392 } zdb_blkstats_t; 1393 1394 #define DMU_OT_DEFERRED DMU_OT_NONE 1395 #define DMU_OT_TOTAL DMU_OT_NUMTYPES 1396 1397 #define ZB_TOTAL ZB_MAXLEVEL 1398 1399 typedef struct zdb_cb { 1400 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1]; 1401 uint64_t zcb_errors[256]; 1402 traverse_blk_cache_t *zcb_cache; 1403 int zcb_readfails; 1404 int zcb_haderrors; 1405 } zdb_cb_t; 1406 1407 static void 1408 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type) 1409 { 1410 int i, error; 1411 1412 for (i = 0; i < 4; i++) { 1413 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 1414 int t = (i & 1) ? type : DMU_OT_TOTAL; 1415 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 1416 1417 zb->zb_asize += BP_GET_ASIZE(bp); 1418 zb->zb_lsize += BP_GET_LSIZE(bp); 1419 zb->zb_psize += BP_GET_PSIZE(bp); 1420 zb->zb_count++; 1421 } 1422 1423 if (dump_opt['L']) 1424 return; 1425 1426 error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark); 1427 1428 if (error == 0) 1429 return; 1430 1431 if (error == EAGAIN) 1432 (void) fatal("double-allocation, bp=%p", bp); 1433 1434 if (error == ESTALE) 1435 (void) fatal("reference to freed block, bp=%p", bp); 1436 1437 (void) fatal("fatal error %d in bp %p", error, bp); 1438 } 1439 1440 static int 1441 zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg) 1442 { 1443 zbookmark_t *zb = &bc->bc_bookmark; 1444 zdb_cb_t *zcb = arg; 1445 blkptr_t *bp = &bc->bc_blkptr; 1446 dmu_object_type_t type = BP_GET_TYPE(bp); 1447 char blkbuf[BP_SPRINTF_LEN]; 1448 int error = 0; 1449 1450 if (bc->bc_errno) { 1451 if (zcb->zcb_readfails++ < 10 && dump_opt['L']) { 1452 zdb_refresh_ubsync(spa); 1453 error = EAGAIN; 1454 } else { 1455 zcb->zcb_haderrors = 1; 1456 zcb->zcb_errors[bc->bc_errno]++; 1457 error = ERESTART; 1458 } 1459 1460 if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno)) 1461 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1462 else 1463 blkbuf[0] = '\0'; 1464 1465 (void) printf("zdb_blkptr_cb: Got error %d reading " 1466 "<%llu, %llu, %lld, %llx> %s -- %s\n", 1467 bc->bc_errno, 1468 (u_longlong_t)zb->zb_objset, 1469 (u_longlong_t)zb->zb_object, 1470 (u_longlong_t)zb->zb_level, 1471 (u_longlong_t)zb->zb_blkid, 1472 blkbuf, 1473 error == EAGAIN ? "retrying" : "skipping"); 1474 1475 return (error); 1476 } 1477 1478 zcb->zcb_readfails = 0; 1479 1480 ASSERT(!BP_IS_HOLE(bp)); 1481 1482 if (dump_opt['b'] >= 4) { 1483 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1484 (void) printf("objset %llu object %llu offset 0x%llx %s\n", 1485 (u_longlong_t)zb->zb_objset, 1486 (u_longlong_t)zb->zb_object, 1487 (u_longlong_t)blkid2offset(bc->bc_dnode, 1488 zb->zb_level, zb->zb_blkid), 1489 blkbuf); 1490 } 1491 1492 zdb_count_block(spa, zcb, bp, type); 1493 1494 return (0); 1495 } 1496 1497 static int 1498 dump_block_stats(spa_t *spa) 1499 { 1500 traverse_handle_t *th; 1501 zdb_cb_t zcb = { 0 }; 1502 traverse_blk_cache_t dummy_cache = { 0 }; 1503 zdb_blkstats_t *zb, *tzb; 1504 uint64_t alloc, space; 1505 int leaks = 0; 1506 int advance = zdb_advance; 1507 int flags; 1508 int e; 1509 1510 zcb.zcb_cache = &dummy_cache; 1511 1512 if (dump_opt['c']) 1513 advance |= ADVANCE_DATA; 1514 1515 advance |= ADVANCE_PRUNE | ADVANCE_ZIL; 1516 1517 (void) printf("\nTraversing all blocks to %sverify" 1518 " nothing leaked ...\n", 1519 dump_opt['c'] ? "verify checksums and " : ""); 1520 1521 /* 1522 * Load all space maps. As we traverse the pool, if we find a block 1523 * that's not in its space map, that indicates a double-allocation, 1524 * reference to a freed block, or an unclaimed block. Otherwise we 1525 * remove the block from the space map. If the space maps are not 1526 * empty when we're done, that indicates leaked blocks. 1527 */ 1528 if (!dump_opt['L']) 1529 zdb_space_map_load(spa); 1530 1531 /* 1532 * If there's a deferred-free bplist, process that first. 1533 */ 1534 if (spa->spa_sync_bplist_obj != 0) { 1535 bplist_t *bpl = &spa->spa_sync_bplist; 1536 blkptr_t blk; 1537 uint64_t itor = 0; 1538 1539 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset, 1540 spa->spa_sync_bplist_obj)); 1541 1542 while (bplist_iterate(bpl, &itor, &blk) == 0) { 1543 if (dump_opt['b'] >= 4) { 1544 char blkbuf[BP_SPRINTF_LEN]; 1545 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk); 1546 (void) printf("[%s] %s\n", 1547 "deferred free", blkbuf); 1548 } 1549 zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED); 1550 } 1551 1552 bplist_close(bpl); 1553 } 1554 1555 /* 1556 * Now traverse the pool. If we're reading all data to verify 1557 * checksums, do a scrubbing read so that we validate all copies. 1558 */ 1559 flags = ZIO_FLAG_CANFAIL; 1560 if (advance & ADVANCE_DATA) 1561 flags |= ZIO_FLAG_SCRUB; 1562 th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags); 1563 th->th_noread = zdb_noread; 1564 1565 traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES); 1566 1567 while (traverse_more(th) == EAGAIN) 1568 continue; 1569 1570 traverse_fini(th); 1571 1572 if (zcb.zcb_haderrors) { 1573 (void) printf("\nError counts:\n\n"); 1574 (void) printf("\t%5s %s\n", "errno", "count"); 1575 for (e = 0; e < 256; e++) { 1576 if (zcb.zcb_errors[e] != 0) { 1577 (void) printf("\t%5d %llu\n", 1578 e, (u_longlong_t)zcb.zcb_errors[e]); 1579 } 1580 } 1581 } 1582 1583 /* 1584 * Report any leaked segments. 1585 */ 1586 if (!dump_opt['L']) 1587 zdb_space_map_unload(spa); 1588 1589 if (dump_opt['L']) 1590 (void) printf("\n\n *** Live pool traversal; " 1591 "block counts are only approximate ***\n\n"); 1592 1593 alloc = spa_get_alloc(spa); 1594 space = spa_get_space(spa); 1595 1596 tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL]; 1597 1598 if (tzb->zb_asize == alloc) { 1599 (void) printf("\n\tNo leaks (block sum matches space" 1600 " maps exactly)\n"); 1601 } else { 1602 (void) printf("block traversal size %llu != alloc %llu " 1603 "(leaked %lld)\n", 1604 (u_longlong_t)tzb->zb_asize, 1605 (u_longlong_t)alloc, 1606 (u_longlong_t)(alloc - tzb->zb_asize)); 1607 leaks = 1; 1608 } 1609 1610 if (tzb->zb_count == 0) 1611 return (2); 1612 1613 (void) printf("\n"); 1614 (void) printf("\tbp count: %10llu\n", 1615 (u_longlong_t)tzb->zb_count); 1616 (void) printf("\tbp logical: %10llu\t avg: %6llu\n", 1617 (u_longlong_t)tzb->zb_lsize, 1618 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 1619 (void) printf("\tbp physical: %10llu\t avg:" 1620 " %6llu\tcompression: %6.2f\n", 1621 (u_longlong_t)tzb->zb_psize, 1622 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 1623 (double)tzb->zb_lsize / tzb->zb_psize); 1624 (void) printf("\tbp allocated: %10llu\t avg:" 1625 " %6llu\tcompression: %6.2f\n", 1626 (u_longlong_t)tzb->zb_asize, 1627 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 1628 (double)tzb->zb_lsize / tzb->zb_asize); 1629 (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n", 1630 (u_longlong_t)alloc, 100.0 * alloc / space); 1631 1632 if (dump_opt['b'] >= 2) { 1633 int l, t, level; 1634 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 1635 "\t avg\t comp\t%%Total\tType\n"); 1636 1637 for (t = 0; t <= DMU_OT_NUMTYPES; t++) { 1638 char csize[6], lsize[6], psize[6], asize[6], avg[6]; 1639 char *typename; 1640 1641 typename = t == DMU_OT_DEFERRED ? "deferred free" : 1642 t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name; 1643 1644 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 1645 (void) printf("%6s\t%5s\t%5s\t%5s" 1646 "\t%5s\t%5s\t%6s\t%s\n", 1647 "-", 1648 "-", 1649 "-", 1650 "-", 1651 "-", 1652 "-", 1653 "-", 1654 typename); 1655 continue; 1656 } 1657 1658 for (l = ZB_TOTAL - 1; l >= -1; l--) { 1659 level = (l == -1 ? ZB_TOTAL : l); 1660 zb = &zcb.zcb_type[level][t]; 1661 1662 if (zb->zb_asize == 0) 1663 continue; 1664 1665 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 1666 continue; 1667 1668 if (level == 0 && zb->zb_asize == 1669 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 1670 continue; 1671 1672 nicenum(zb->zb_count, csize); 1673 nicenum(zb->zb_lsize, lsize); 1674 nicenum(zb->zb_psize, psize); 1675 nicenum(zb->zb_asize, asize); 1676 nicenum(zb->zb_asize / zb->zb_count, avg); 1677 1678 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 1679 "\t%5.2f\t%6.2f\t", 1680 csize, lsize, psize, asize, avg, 1681 (double)zb->zb_lsize / zb->zb_psize, 1682 100.0 * zb->zb_asize / tzb->zb_asize); 1683 1684 if (level == ZB_TOTAL) 1685 (void) printf("%s\n", typename); 1686 else 1687 (void) printf(" L%d %s\n", 1688 level, typename); 1689 } 1690 } 1691 } 1692 1693 (void) printf("\n"); 1694 1695 if (leaks) 1696 return (2); 1697 1698 if (zcb.zcb_haderrors) 1699 return (3); 1700 1701 return (0); 1702 } 1703 1704 static void 1705 dump_zpool(spa_t *spa) 1706 { 1707 dsl_pool_t *dp = spa_get_dsl(spa); 1708 int rc = 0; 1709 1710 if (dump_opt['u']) 1711 dump_uberblock(&spa->spa_uberblock); 1712 1713 if (dump_opt['d'] || dump_opt['i']) { 1714 dump_dir(dp->dp_meta_objset); 1715 if (dump_opt['d'] >= 3) { 1716 dump_bplist(dp->dp_meta_objset, 1717 spa->spa_sync_bplist_obj, "Deferred frees"); 1718 dump_dtl(spa->spa_root_vdev, 0); 1719 dump_metaslabs(spa); 1720 } 1721 (void) dmu_objset_find(spa->spa_name, dump_one_dir, NULL, 1722 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 1723 } 1724 1725 if (dump_opt['b'] || dump_opt['c']) 1726 rc = dump_block_stats(spa); 1727 1728 if (dump_opt['s']) 1729 show_pool_stats(spa); 1730 1731 if (rc != 0) 1732 exit(rc); 1733 } 1734 1735 #define ZDB_FLAG_CHECKSUM 0x0001 1736 #define ZDB_FLAG_DECOMPRESS 0x0002 1737 #define ZDB_FLAG_BSWAP 0x0004 1738 #define ZDB_FLAG_GBH 0x0008 1739 #define ZDB_FLAG_INDIRECT 0x0010 1740 #define ZDB_FLAG_PHYS 0x0020 1741 #define ZDB_FLAG_RAW 0x0040 1742 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 1743 1744 int flagbits[256]; 1745 1746 static void 1747 zdb_print_blkptr(blkptr_t *bp, int flags) 1748 { 1749 dva_t *dva = bp->blk_dva; 1750 int d; 1751 1752 if (flags & ZDB_FLAG_BSWAP) 1753 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 1754 /* 1755 * Super-ick warning: This code is also duplicated in 1756 * cmd/mdb/common/modules/zfs/zfs.c . Yeah, I hate code 1757 * replication, too. 1758 */ 1759 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1760 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d, 1761 DVA_GET_VDEV(&dva[d]), DVA_GET_OFFSET(&dva[d])); 1762 (void) printf("\tDVA[%d]: GANG: %-5s GRID: %04llx\t" 1763 "ASIZE: %llx\n", d, 1764 DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE", 1765 DVA_GET_GRID(&dva[d]), DVA_GET_ASIZE(&dva[d])); 1766 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d, 1767 DVA_GET_VDEV(&dva[d]), DVA_GET_OFFSET(&dva[d]), 1768 BP_GET_PSIZE(bp), 1769 BP_SHOULD_BYTESWAP(bp) ? "e" : "", 1770 !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ? 1771 "d" : "", 1772 DVA_GET_GANG(&dva[d]) ? "g" : "", 1773 BP_GET_COMPRESS(bp) != 0 ? "d" : ""); 1774 } 1775 (void) printf("\tLSIZE: %-16llx\t\tPSIZE: %llx\n", 1776 BP_GET_LSIZE(bp), BP_GET_PSIZE(bp)); 1777 (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE: %s\n", 1778 BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG", 1779 dmu_ot[BP_GET_TYPE(bp)].ot_name); 1780 (void) printf("\tBIRTH: %-16llx LEVEL: %-2llu\tFILL: %llx\n", 1781 (u_longlong_t)bp->blk_birth, BP_GET_LEVEL(bp), 1782 (u_longlong_t)bp->blk_fill); 1783 (void) printf("\tCKFUNC: %-16s\t\tCOMP: %s\n", 1784 zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name, 1785 zio_compress_table[BP_GET_COMPRESS(bp)].ci_name); 1786 (void) printf("\tCKSUM: %llx:%llx:%llx:%llx\n", 1787 (u_longlong_t)bp->blk_cksum.zc_word[0], 1788 (u_longlong_t)bp->blk_cksum.zc_word[1], 1789 (u_longlong_t)bp->blk_cksum.zc_word[2], 1790 (u_longlong_t)bp->blk_cksum.zc_word[3]); 1791 } 1792 1793 static void 1794 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 1795 { 1796 int i; 1797 1798 for (i = 0; i < nbps; i++) 1799 zdb_print_blkptr(&bp[i], flags); 1800 } 1801 1802 static void 1803 zdb_dump_gbh(void *buf, int flags) 1804 { 1805 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 1806 } 1807 1808 static void 1809 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 1810 { 1811 if (flags & ZDB_FLAG_BSWAP) 1812 byteswap_uint64_array(buf, size); 1813 (void) write(2, buf, size); 1814 } 1815 1816 static void 1817 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 1818 { 1819 uint64_t *d = (uint64_t *)buf; 1820 int nwords = size / sizeof (uint64_t); 1821 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 1822 int i, j; 1823 char *hdr, *c; 1824 1825 1826 if (do_bswap) 1827 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 1828 else 1829 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 1830 1831 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 1832 1833 for (i = 0; i < nwords; i += 2) { 1834 (void) printf("%06llx: %016llx %016llx ", 1835 (u_longlong_t)(i * sizeof (uint64_t)), 1836 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 1837 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 1838 1839 c = (char *)&d[i]; 1840 for (j = 0; j < 2 * sizeof (uint64_t); j++) 1841 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 1842 (void) printf("\n"); 1843 } 1844 } 1845 1846 /* 1847 * There are two acceptable formats: 1848 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 1849 * child[.child]* - For example: 0.1.1 1850 * 1851 * The second form can be used to specify arbitrary vdevs anywhere 1852 * in the heirarchy. For example, in a pool with a mirror of 1853 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 1854 */ 1855 static vdev_t * 1856 zdb_vdev_lookup(vdev_t *vdev, char *path) 1857 { 1858 char *s, *p, *q; 1859 int i; 1860 1861 if (vdev == NULL) 1862 return (NULL); 1863 1864 /* First, assume the x.x.x.x format */ 1865 i = (int)strtoul(path, &s, 10); 1866 if (s == path || (s && *s != '.' && *s != '\0')) 1867 goto name; 1868 if (i < 0 || i >= vdev->vdev_children) 1869 return (NULL); 1870 1871 vdev = vdev->vdev_child[i]; 1872 if (*s == '\0') 1873 return (vdev); 1874 return (zdb_vdev_lookup(vdev, s+1)); 1875 1876 name: 1877 for (i = 0; i < vdev->vdev_children; i++) { 1878 vdev_t *vc = vdev->vdev_child[i]; 1879 1880 if (vc->vdev_path == NULL) { 1881 vc = zdb_vdev_lookup(vc, path); 1882 if (vc == NULL) 1883 continue; 1884 else 1885 return (vc); 1886 } 1887 1888 p = strrchr(vc->vdev_path, '/'); 1889 p = p ? p + 1 : vc->vdev_path; 1890 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 1891 1892 if (strcmp(vc->vdev_path, path) == 0) 1893 return (vc); 1894 if (strcmp(p, path) == 0) 1895 return (vc); 1896 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 1897 return (vc); 1898 } 1899 1900 return (NULL); 1901 } 1902 1903 /* 1904 * Read a block from a pool and print it out. The syntax of the 1905 * block descriptor is: 1906 * 1907 * pool:vdev_specifier:offset:size[:flags] 1908 * 1909 * pool - The name of the pool you wish to read from 1910 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 1911 * offset - offset, in hex, in bytes 1912 * size - Amount of data to read, in hex, in bytes 1913 * flags - A string of characters specifying options 1914 * b: Decode a blkptr at given offset within block 1915 * *c: Calculate and display checksums 1916 * *d: Decompress data before dumping 1917 * e: Byteswap data before dumping 1918 * *g: Display data as a gang block header 1919 * *i: Display as an indirect block 1920 * p: Do I/O to physical offset 1921 * r: Dump raw data to stdout 1922 * 1923 * * = not yet implemented 1924 */ 1925 static void 1926 zdb_read_block(char *thing, spa_t **spap) 1927 { 1928 spa_t *spa = *spap; 1929 int flags = 0; 1930 uint64_t offset = 0, size = 0, blkptr_offset = 0; 1931 zio_t *zio; 1932 vdev_t *vd; 1933 void *buf; 1934 char *s, *p, *dup, *spa_name, *vdev, *flagstr; 1935 int i, error, zio_flags; 1936 1937 dup = strdup(thing); 1938 s = strtok(dup, ":"); 1939 spa_name = s ? s : ""; 1940 s = strtok(NULL, ":"); 1941 vdev = s ? s : ""; 1942 s = strtok(NULL, ":"); 1943 offset = strtoull(s ? s : "", NULL, 16); 1944 s = strtok(NULL, ":"); 1945 size = strtoull(s ? s : "", NULL, 16); 1946 s = strtok(NULL, ":"); 1947 flagstr = s ? s : ""; 1948 1949 s = NULL; 1950 if (size == 0) 1951 s = "size must not be zero"; 1952 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 1953 s = "size must be a multiple of sector size"; 1954 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 1955 s = "offset must be a multiple of sector size"; 1956 if (s) { 1957 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 1958 free(dup); 1959 return; 1960 } 1961 1962 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 1963 for (i = 0; flagstr[i]; i++) { 1964 int bit = flagbits[flagstr[i]]; 1965 1966 if (bit == 0) { 1967 (void) printf("***Invalid flag: %c\n", 1968 flagstr[i]); 1969 continue; 1970 } 1971 flags |= bit; 1972 1973 /* If it's not something with an argument, keep going */ 1974 if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS | 1975 ZDB_FLAG_PRINT_BLKPTR)) == 0) 1976 continue; 1977 1978 p = &flagstr[i + 1]; 1979 if (bit == ZDB_FLAG_PRINT_BLKPTR) 1980 blkptr_offset = strtoull(p, &p, 16); 1981 if (*p != ':' && *p != '\0') { 1982 (void) printf("***Invalid flag arg: '%s'\n", s); 1983 free(dup); 1984 return; 1985 } 1986 } 1987 } 1988 1989 if (spa == NULL || spa->spa_name == NULL || 1990 strcmp(spa->spa_name, spa_name)) { 1991 if (spa && spa->spa_name) 1992 spa_close(spa, (void *)zdb_read_block); 1993 error = spa_open(spa_name, spap, (void *)zdb_read_block); 1994 if (error) 1995 fatal("Failed to open pool '%s': errno = %d\n", 1996 spa_name, error); 1997 spa = *spap; 1998 } 1999 2000 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 2001 if (vd == NULL) { 2002 (void) printf("***Invalid vdev: %s\n", vdev); 2003 free(dup); 2004 return; 2005 } else { 2006 if (vd->vdev_path) 2007 (void) printf("Found vdev: %s\n", vd->vdev_path); 2008 else 2009 (void) printf("Found vdev type: %s\n", 2010 vd->vdev_ops->vdev_op_type); 2011 } 2012 2013 buf = umem_alloc(size, UMEM_NOFAIL); 2014 2015 zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 2016 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK; 2017 2018 if (flags & ZDB_FLAG_PHYS) 2019 zio_flags |= ZIO_FLAG_PHYSICAL; 2020 2021 zio = zio_root(spa, NULL, NULL, 0); 2022 /* XXX todo - cons up a BP so RAID-Z will be happy */ 2023 zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size, 2024 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL)); 2025 error = zio_wait(zio); 2026 2027 if (error) { 2028 (void) printf("Read of %s failed, error: %d\n", thing, error); 2029 goto out; 2030 } 2031 2032 if (flags & ZDB_FLAG_PRINT_BLKPTR) 2033 zdb_print_blkptr((blkptr_t *)(void *) 2034 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 2035 else if (flags & ZDB_FLAG_RAW) 2036 zdb_dump_block_raw(buf, size, flags); 2037 else if (flags & ZDB_FLAG_INDIRECT) 2038 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 2039 flags); 2040 else if (flags & ZDB_FLAG_GBH) 2041 zdb_dump_gbh(buf, flags); 2042 else 2043 zdb_dump_block(thing, buf, size, flags); 2044 2045 out: 2046 umem_free(buf, size); 2047 free(dup); 2048 } 2049 2050 int 2051 main(int argc, char **argv) 2052 { 2053 int i, c; 2054 struct rlimit rl = { 1024, 1024 }; 2055 spa_t *spa; 2056 objset_t *os = NULL; 2057 char *endstr; 2058 int dump_all = 1; 2059 int verbose = 0; 2060 int error; 2061 int flag, set; 2062 vdev_knob_t *vk; 2063 2064 (void) setrlimit(RLIMIT_NOFILE, &rl); 2065 (void) enable_extended_FILE_stdio(-1, -1); 2066 2067 dprintf_setup(&argc, argv); 2068 2069 while ((c = getopt(argc, argv, "udibcsvCLO:B:UlR")) != -1) { 2070 switch (c) { 2071 case 'u': 2072 case 'd': 2073 case 'i': 2074 case 'b': 2075 case 'c': 2076 case 's': 2077 case 'C': 2078 case 'l': 2079 case 'R': 2080 dump_opt[c]++; 2081 dump_all = 0; 2082 break; 2083 case 'L': 2084 dump_opt[c]++; 2085 break; 2086 case 'O': 2087 endstr = optarg; 2088 if (endstr[0] == '!') { 2089 endstr++; 2090 set = 0; 2091 } else { 2092 set = 1; 2093 } 2094 if (strcmp(endstr, "post") == 0) { 2095 flag = ADVANCE_PRE; 2096 set = !set; 2097 } else if (strcmp(endstr, "pre") == 0) { 2098 flag = ADVANCE_PRE; 2099 } else if (strcmp(endstr, "prune") == 0) { 2100 flag = ADVANCE_PRUNE; 2101 } else if (strcmp(endstr, "data") == 0) { 2102 flag = ADVANCE_DATA; 2103 } else if (strcmp(endstr, "holes") == 0) { 2104 flag = ADVANCE_HOLES; 2105 } else { 2106 usage(); 2107 } 2108 if (set) 2109 zdb_advance |= flag; 2110 else 2111 zdb_advance &= ~flag; 2112 break; 2113 case 'B': 2114 endstr = optarg - 1; 2115 zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0); 2116 zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0); 2117 zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0); 2118 zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16); 2119 (void) printf("simulating bad block " 2120 "<%llu, %llu, %lld, %llx>\n", 2121 (u_longlong_t)zdb_noread.zb_objset, 2122 (u_longlong_t)zdb_noread.zb_object, 2123 (u_longlong_t)zdb_noread.zb_level, 2124 (u_longlong_t)zdb_noread.zb_blkid); 2125 break; 2126 case 'v': 2127 verbose++; 2128 break; 2129 case 'U': 2130 spa_config_dir = "/tmp"; 2131 break; 2132 default: 2133 usage(); 2134 break; 2135 } 2136 } 2137 2138 kernel_init(FREAD); 2139 2140 /* 2141 * Disable vdev caching. If we don't do this, live pool traversal 2142 * won't make progress because it will never see disk updates. 2143 */ 2144 for (vk = vdev_knob_next(NULL); vk != NULL; vk = vdev_knob_next(vk)) { 2145 if (strcmp(vk->vk_name, "cache_size") == 0) 2146 vk->vk_default = 0; 2147 } 2148 2149 for (c = 0; c < 256; c++) { 2150 if (dump_all && c != 'L' && c != 'l' && c != 'R') 2151 dump_opt[c] = 1; 2152 if (dump_opt[c]) 2153 dump_opt[c] += verbose; 2154 } 2155 2156 argc -= optind; 2157 argv += optind; 2158 2159 if (argc < 1) { 2160 if (dump_opt['C']) { 2161 dump_config(NULL); 2162 return (0); 2163 } 2164 usage(); 2165 } 2166 2167 if (dump_opt['l']) { 2168 dump_label(argv[0]); 2169 return (0); 2170 } 2171 2172 if (dump_opt['R']) { 2173 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 2174 flagbits['c'] = ZDB_FLAG_CHECKSUM; 2175 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 2176 flagbits['e'] = ZDB_FLAG_BSWAP; 2177 flagbits['g'] = ZDB_FLAG_GBH; 2178 flagbits['i'] = ZDB_FLAG_INDIRECT; 2179 flagbits['p'] = ZDB_FLAG_PHYS; 2180 flagbits['r'] = ZDB_FLAG_RAW; 2181 2182 spa = NULL; 2183 while (argv[0]) { 2184 zdb_read_block(argv[0], &spa); 2185 argv++; 2186 argc--; 2187 } 2188 if (spa) 2189 spa_close(spa, (void *)zdb_read_block); 2190 return (0); 2191 } 2192 2193 if (dump_opt['C']) 2194 dump_config(argv[0]); 2195 2196 if (strchr(argv[0], '/') != NULL) { 2197 error = dmu_objset_open(argv[0], DMU_OST_ANY, 2198 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 2199 } else { 2200 error = spa_open(argv[0], &spa, FTAG); 2201 } 2202 2203 if (error) 2204 fatal("can't open %s: error %d", argv[0], error); 2205 2206 argv++; 2207 if (--argc > 0) { 2208 zopt_objects = argc; 2209 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 2210 for (i = 0; i < zopt_objects; i++) { 2211 errno = 0; 2212 zopt_object[i] = strtoull(argv[i], NULL, 0); 2213 if (zopt_object[i] == 0 && errno != 0) 2214 fatal("bad object number %s: %s", 2215 argv[i], strerror(errno)); 2216 } 2217 } 2218 2219 if (os != NULL) { 2220 dump_dir(os); 2221 dmu_objset_close(os); 2222 } else { 2223 dump_zpool(spa); 2224 spa_close(spa, FTAG); 2225 } 2226 2227 kernel_fini(); 2228 2229 return (0); 2230 } 2231