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\tinconsistent = %llu\n", 748 (u_longlong_t)ds->ds_inconsistent); 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 numbuf[6]; 759 760 if (dump_opt['d'] < 3) 761 return; 762 763 VERIFY(0 == bplist_open(&bpl, mos, object)); 764 if (bplist_empty(&bpl)) { 765 bplist_close(&bpl); 766 return; 767 } 768 769 nicenum(bpl.bpl_phys->bpl_bytes, numbuf); 770 771 (void) printf("\n %s: %llu entries, %s\n", 772 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, numbuf); 773 774 if (dump_opt['d'] < 5) { 775 bplist_close(&bpl); 776 return; 777 } 778 779 (void) printf("\n"); 780 781 while (bplist_iterate(&bpl, &itor, bp) == 0) { 782 char blkbuf[BP_SPRINTF_LEN]; 783 784 ASSERT(bp->blk_birth != 0); 785 sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0); 786 (void) printf("\tItem %3llu: %s\n", 787 (u_longlong_t)itor - 1, blkbuf); 788 } 789 790 bplist_close(&bpl); 791 } 792 793 static char * 794 znode_path(objset_t *os, uint64_t object, char *pathbuf, size_t size) 795 { 796 dmu_buf_t *db; 797 dmu_object_info_t doi; 798 znode_phys_t *zp; 799 uint64_t parent = 0; 800 size_t complen; 801 char component[MAXNAMELEN + 1]; 802 char *path; 803 int error; 804 805 path = pathbuf + size; 806 *--path = '\0'; 807 808 for (;;) { 809 error = dmu_bonus_hold(os, object, FTAG, &db); 810 if (error) 811 break; 812 813 dmu_object_info_from_db(db, &doi); 814 zp = db->db_data; 815 parent = zp->zp_parent; 816 dmu_buf_rele(db, FTAG); 817 818 if (doi.doi_bonus_type != DMU_OT_ZNODE) 819 break; 820 821 if (parent == object) { 822 if (path[0] != '/') 823 *--path = '/'; 824 return (path); 825 } 826 827 if (zap_value_search(os, parent, object, component) != 0) 828 break; 829 830 complen = strlen(component); 831 path -= complen; 832 bcopy(component, path, complen); 833 *--path = '/'; 834 835 object = parent; 836 } 837 838 (void) sprintf(component, "???<object#%llu>", (u_longlong_t)object); 839 840 complen = strlen(component); 841 path -= complen; 842 bcopy(component, path, complen); 843 844 return (path); 845 } 846 847 /*ARGSUSED*/ 848 static void 849 dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 850 { 851 znode_phys_t *zp = data; 852 time_t z_crtime, z_atime, z_mtime, z_ctime; 853 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 854 855 ASSERT(size >= sizeof (znode_phys_t)); 856 857 if (dump_opt['d'] < 3) { 858 (void) printf("\t%s\n", 859 znode_path(os, object, path, sizeof (path))); 860 return; 861 } 862 863 z_crtime = (time_t)zp->zp_crtime[0]; 864 z_atime = (time_t)zp->zp_atime[0]; 865 z_mtime = (time_t)zp->zp_mtime[0]; 866 z_ctime = (time_t)zp->zp_ctime[0]; 867 868 (void) printf("\tpath %s\n", 869 znode_path(os, object, path, sizeof (path))); 870 (void) printf("\tatime %s", ctime(&z_atime)); 871 (void) printf("\tmtime %s", ctime(&z_mtime)); 872 (void) printf("\tctime %s", ctime(&z_ctime)); 873 (void) printf("\tcrtime %s", ctime(&z_crtime)); 874 (void) printf("\tgen %llu\n", (u_longlong_t)zp->zp_gen); 875 (void) printf("\tmode %llo\n", (u_longlong_t)zp->zp_mode); 876 (void) printf("\tsize %llu\n", (u_longlong_t)zp->zp_size); 877 (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent); 878 (void) printf("\tlinks %llu\n", (u_longlong_t)zp->zp_links); 879 (void) printf("\txattr %llu\n", (u_longlong_t)zp->zp_xattr); 880 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)zp->zp_rdev); 881 } 882 883 /*ARGSUSED*/ 884 static void 885 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 886 { 887 } 888 889 /*ARGSUSED*/ 890 static void 891 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 892 { 893 } 894 895 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = { 896 dump_none, /* unallocated */ 897 dump_zap, /* object directory */ 898 dump_uint64, /* object array */ 899 dump_none, /* packed nvlist */ 900 dump_packed_nvlist, /* packed nvlist size */ 901 dump_none, /* bplist */ 902 dump_none, /* bplist header */ 903 dump_none, /* SPA space map header */ 904 dump_none, /* SPA space map */ 905 dump_none, /* ZIL intent log */ 906 dump_dnode, /* DMU dnode */ 907 dump_dmu_objset, /* DMU objset */ 908 dump_dsl_dir, /* DSL directory */ 909 dump_zap, /* DSL directory child map */ 910 dump_zap, /* DSL dataset snap map */ 911 dump_zap, /* DSL props */ 912 dump_dsl_dataset, /* DSL dataset */ 913 dump_znode, /* ZFS znode */ 914 dump_acl, /* ZFS ACL */ 915 dump_uint8, /* ZFS plain file */ 916 dump_zap, /* ZFS directory */ 917 dump_zap, /* ZFS master node */ 918 dump_zap, /* ZFS delete queue */ 919 dump_uint8, /* zvol object */ 920 dump_zap, /* zvol prop */ 921 dump_uint8, /* other uint8[] */ 922 dump_uint64, /* other uint64[] */ 923 dump_zap, /* other ZAP */ 924 dump_zap, /* persistent error log */ 925 }; 926 927 static void 928 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 929 { 930 dmu_buf_t *db = NULL; 931 dmu_object_info_t doi; 932 dnode_t *dn; 933 void *bonus = NULL; 934 size_t bsize = 0; 935 char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6]; 936 char aux[50]; 937 int error; 938 939 if (*print_header) { 940 (void) printf("\n Object lvl iblk dblk lsize" 941 " asize type\n"); 942 *print_header = 0; 943 } 944 945 if (object == 0) { 946 dn = os->os->os_meta_dnode; 947 } else { 948 error = dmu_bonus_hold(os, object, FTAG, &db); 949 if (error) 950 fatal("dmu_bonus_hold(%llu) failed, errno %u", 951 object, error); 952 bonus = db->db_data; 953 bsize = db->db_size; 954 dn = ((dmu_buf_impl_t *)db)->db_dnode; 955 } 956 dmu_object_info_from_dnode(dn, &doi); 957 958 nicenum(doi.doi_metadata_block_size, iblk); 959 nicenum(doi.doi_data_block_size, dblk); 960 nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1), 961 lsize); 962 nicenum(doi.doi_physical_blks << 9, asize); 963 nicenum(doi.doi_bonus_size, bonus_size); 964 965 aux[0] = '\0'; 966 967 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) 968 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 969 zio_checksum_table[doi.doi_checksum].ci_name); 970 971 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) 972 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 973 zio_compress_table[doi.doi_compress].ci_name); 974 975 (void) printf("%10lld %3u %5s %5s %5s %5s %s%s\n", 976 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize, 977 asize, dmu_ot[doi.doi_type].ot_name, aux); 978 979 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 980 (void) printf("%10s %3s %5s %5s %5s %5s %s\n", 981 "", "", "", "", bonus_size, "bonus", 982 dmu_ot[doi.doi_bonus_type].ot_name); 983 } 984 985 if (verbosity >= 4) { 986 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize); 987 object_viewer[doi.doi_type](os, object, NULL, 0); 988 *print_header = 1; 989 } 990 991 if (verbosity >= 5) 992 dump_indirect(os, object, NULL, 0); 993 994 if (verbosity >= 5) { 995 /* 996 * Report the list of segments that comprise the object. 997 */ 998 uint64_t start = 0; 999 uint64_t end; 1000 uint64_t blkfill = 1; 1001 int minlvl = 1; 1002 1003 if (dn->dn_type == DMU_OT_DNODE) { 1004 minlvl = 0; 1005 blkfill = DNODES_PER_BLOCK; 1006 } 1007 1008 for (;;) { 1009 error = dnode_next_offset(dn, B_FALSE, &start, minlvl, 1010 blkfill); 1011 if (error) 1012 break; 1013 end = start; 1014 error = dnode_next_offset(dn, B_TRUE, &end, minlvl, 1015 blkfill); 1016 nicenum(end - start, segsize); 1017 (void) printf("\t\tsegment [%016llx, %016llx)" 1018 " size %5s\n", (u_longlong_t)start, 1019 (u_longlong_t)end, segsize); 1020 if (error) 1021 break; 1022 start = end; 1023 } 1024 } 1025 1026 if (db != NULL) 1027 dmu_buf_rele(db, FTAG); 1028 } 1029 1030 static char *objset_types[DMU_OST_NUMTYPES] = { 1031 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1032 1033 /*ARGSUSED*/ 1034 static void 1035 dump_dir(objset_t *os) 1036 { 1037 dmu_objset_stats_t dds; 1038 uint64_t object, object_count; 1039 char numbuf[8]; 1040 char blkbuf[BP_SPRINTF_LEN]; 1041 char osname[MAXNAMELEN]; 1042 char *type = "UNKNOWN"; 1043 int verbosity = dump_opt['d']; 1044 int print_header = 1; 1045 int i, error; 1046 1047 dmu_objset_stats(os, &dds); 1048 1049 if (dds.dds_type < DMU_OST_NUMTYPES) 1050 type = objset_types[dds.dds_type]; 1051 1052 if (dds.dds_type == DMU_OST_META) { 1053 dds.dds_creation_txg = TXG_INITIAL; 1054 dds.dds_last_txg = os->os->os_rootbp.blk_birth; 1055 dds.dds_objects_used = os->os->os_rootbp.blk_fill; 1056 dds.dds_space_refd = 1057 os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes; 1058 } 1059 1060 ASSERT3U(dds.dds_objects_used, ==, os->os->os_rootbp.blk_fill); 1061 1062 nicenum(dds.dds_space_refd, numbuf); 1063 1064 if (verbosity >= 4) { 1065 (void) strcpy(blkbuf, ", rootbp "); 1066 sprintf_blkptr(blkbuf + strlen(blkbuf), 1067 BP_SPRINTF_LEN - strlen(blkbuf), &os->os->os_rootbp); 1068 } else { 1069 blkbuf[0] = '\0'; 1070 } 1071 1072 dmu_objset_name(os, osname); 1073 1074 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, last_txg %llu, " 1075 "%s, %llu objects%s\n", 1076 osname, type, (u_longlong_t)dmu_objset_id(os), 1077 (u_longlong_t)dds.dds_creation_txg, 1078 (u_longlong_t)dds.dds_last_txg, 1079 numbuf, 1080 (u_longlong_t)dds.dds_objects_used, 1081 blkbuf); 1082 1083 dump_intent_log(dmu_objset_zil(os)); 1084 1085 if (dmu_objset_ds(os) != NULL) 1086 dump_bplist(dmu_objset_pool(os)->dp_meta_objset, 1087 dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist"); 1088 1089 if (verbosity < 2) 1090 return; 1091 1092 if (zopt_objects != 0) { 1093 for (i = 0; i < zopt_objects; i++) 1094 dump_object(os, zopt_object[i], verbosity, 1095 &print_header); 1096 (void) printf("\n"); 1097 return; 1098 } 1099 1100 dump_object(os, 0, verbosity, &print_header); 1101 object_count = 1; 1102 1103 object = 0; 1104 while ((error = dmu_object_next(os, &object, B_FALSE)) == 0) { 1105 dump_object(os, object, verbosity, &print_header); 1106 object_count++; 1107 } 1108 1109 ASSERT3U(object_count, ==, dds.dds_objects_used); 1110 1111 (void) printf("\n"); 1112 1113 if (error != ESRCH) 1114 fatal("dmu_object_next() = %d", error); 1115 } 1116 1117 static void 1118 dump_uberblock(uberblock_t *ub) 1119 { 1120 time_t timestamp = ub->ub_timestamp; 1121 1122 (void) printf("Uberblock\n\n"); 1123 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 1124 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 1125 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 1126 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 1127 (void) printf("\ttimestamp = %llu UTC = %s", 1128 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 1129 if (dump_opt['u'] >= 3) { 1130 char blkbuf[BP_SPRINTF_LEN]; 1131 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp); 1132 (void) printf("\trootbp = %s\n", blkbuf); 1133 } 1134 (void) printf("\n"); 1135 } 1136 1137 static void 1138 dump_config(const char *pool) 1139 { 1140 spa_t *spa = NULL; 1141 1142 mutex_enter(&spa_namespace_lock); 1143 while ((spa = spa_next(spa)) != NULL) { 1144 if (pool == NULL) 1145 (void) printf("%s\n", spa_name(spa)); 1146 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0) 1147 dump_nvlist(spa->spa_config, 4); 1148 } 1149 mutex_exit(&spa_namespace_lock); 1150 } 1151 1152 static void 1153 dump_label(const char *dev) 1154 { 1155 int fd; 1156 vdev_label_t label; 1157 char *buf = label.vl_vdev_phys.vp_nvlist; 1158 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 1159 struct stat64 statbuf; 1160 uint64_t psize; 1161 int l; 1162 1163 if ((fd = open64(dev, O_RDONLY)) < 0) { 1164 (void) printf("cannot open '%s': %s\n", dev, strerror(errno)); 1165 exit(1); 1166 } 1167 1168 if (fstat64(fd, &statbuf) != 0) { 1169 (void) printf("failed to stat '%s': %s\n", dev, 1170 strerror(errno)); 1171 exit(1); 1172 } 1173 1174 psize = statbuf.st_size; 1175 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 1176 1177 for (l = 0; l < VDEV_LABELS; l++) { 1178 1179 nvlist_t *config = NULL; 1180 1181 (void) printf("--------------------------------------------\n"); 1182 (void) printf("LABEL %d\n", l); 1183 (void) printf("--------------------------------------------\n"); 1184 1185 if (pread64(fd, &label, sizeof (label), 1186 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 1187 (void) printf("failed to read label %d\n", l); 1188 continue; 1189 } 1190 1191 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 1192 (void) printf("failed to unpack label %d\n", l); 1193 continue; 1194 } 1195 dump_nvlist(config, 4); 1196 nvlist_free(config); 1197 } 1198 } 1199 1200 /*ARGSUSED*/ 1201 static void 1202 dump_one_dir(char *dsname, void *arg) 1203 { 1204 int error; 1205 objset_t *os; 1206 1207 error = dmu_objset_open(dsname, DMU_OST_ANY, 1208 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1209 if (error) { 1210 (void) printf("Could not open %s\n", dsname); 1211 return; 1212 } 1213 dump_dir(os); 1214 dmu_objset_close(os); 1215 } 1216 1217 static void 1218 zdb_space_map_load(spa_t *spa) 1219 { 1220 vdev_t *rvd = spa->spa_root_vdev; 1221 vdev_t *vd; 1222 int c, m, error; 1223 1224 for (c = 0; c < rvd->vdev_children; c++) { 1225 vd = rvd->vdev_child[c]; 1226 for (m = 0; m < vd->vdev_ms_count; m++) { 1227 metaslab_t *msp = vd->vdev_ms[m]; 1228 mutex_enter(&msp->ms_lock); 1229 error = space_map_load(&msp->ms_allocmap[0], NULL, 1230 SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset); 1231 mutex_exit(&msp->ms_lock); 1232 if (error) 1233 fatal("%s bad space map #%d, error %d", 1234 spa->spa_name, c, error); 1235 } 1236 } 1237 } 1238 1239 static int 1240 zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb) 1241 { 1242 dva_t *dva = bp->blk_dva; 1243 vdev_t *vd; 1244 metaslab_t *msp; 1245 space_map_t *allocmap, *freemap; 1246 int error; 1247 int d; 1248 blkptr_t blk = *bp; 1249 1250 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1251 uint64_t vdev = DVA_GET_VDEV(&dva[d]); 1252 uint64_t offset = DVA_GET_OFFSET(&dva[d]); 1253 uint64_t size = DVA_GET_ASIZE(&dva[d]); 1254 1255 if ((vd = vdev_lookup_top(spa, vdev)) == NULL) 1256 return (ENXIO); 1257 1258 if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count) 1259 return (ENXIO); 1260 1261 msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 1262 allocmap = &msp->ms_allocmap[0]; 1263 freemap = &msp->ms_freemap[0]; 1264 1265 /* Prepare our copy of the bp in case we need to read GBHs */ 1266 if (DVA_GET_GANG(&dva[d])) { 1267 size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE); 1268 DVA_SET_ASIZE(&blk.blk_dva[d], size); 1269 DVA_SET_GANG(&blk.blk_dva[d], 0); 1270 } 1271 1272 mutex_enter(&msp->ms_lock); 1273 if (space_map_contains(freemap, offset, size)) { 1274 mutex_exit(&msp->ms_lock); 1275 return (EAGAIN); /* allocated more than once */ 1276 } 1277 1278 if (!space_map_contains(allocmap, offset, size)) { 1279 mutex_exit(&msp->ms_lock); 1280 return (ESTALE); /* not allocated at all */ 1281 } 1282 1283 space_map_remove(allocmap, offset, size); 1284 space_map_add(freemap, offset, size); 1285 1286 mutex_exit(&msp->ms_lock); 1287 } 1288 1289 if (BP_IS_GANG(bp)) { 1290 zio_gbh_phys_t gbh; 1291 int g; 1292 1293 /* LINTED - compile time assert */ 1294 ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE); 1295 1296 BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER); 1297 BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE); 1298 BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE); 1299 BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF); 1300 error = zio_wait(zio_read(NULL, spa, &blk, &gbh, 1301 SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ, 1302 ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb)); 1303 if (error) 1304 return (error); 1305 if (BP_SHOULD_BYTESWAP(&blk)) 1306 byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE); 1307 for (g = 0; g < SPA_GBH_NBLKPTRS; g++) { 1308 if (BP_IS_HOLE(&gbh.zg_blkptr[g])) 1309 break; 1310 error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb); 1311 if (error) 1312 return (error); 1313 } 1314 } 1315 1316 return (0); 1317 } 1318 1319 static void 1320 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size) 1321 { 1322 metaslab_t *msp; 1323 1324 /* LINTED */ 1325 msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0])); 1326 1327 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 1328 (u_longlong_t)msp->ms_group->mg_vd->vdev_id, 1329 (u_longlong_t)start, 1330 (u_longlong_t)size); 1331 } 1332 1333 static void 1334 zdb_space_map_unload(spa_t *spa) 1335 { 1336 vdev_t *rvd = spa->spa_root_vdev; 1337 vdev_t *vd; 1338 int c, m; 1339 1340 for (c = 0; c < rvd->vdev_children; c++) { 1341 vd = rvd->vdev_child[c]; 1342 for (m = 0; m < vd->vdev_ms_count; m++) { 1343 metaslab_t *msp = vd->vdev_ms[m]; 1344 mutex_enter(&msp->ms_lock); 1345 space_map_vacate(&msp->ms_allocmap[0], zdb_leak, 1346 &msp->ms_allocmap[0]); 1347 space_map_unload(&msp->ms_allocmap[0]); 1348 space_map_vacate(&msp->ms_freemap[0], NULL, NULL); 1349 mutex_exit(&msp->ms_lock); 1350 } 1351 } 1352 } 1353 1354 static void 1355 zdb_refresh_ubsync(spa_t *spa) 1356 { 1357 uberblock_t ub = { 0 }; 1358 vdev_t *rvd = spa->spa_root_vdev; 1359 zio_t *zio; 1360 1361 /* 1362 * Reload the uberblock. 1363 */ 1364 zio = zio_root(spa, NULL, NULL, 1365 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); 1366 vdev_uberblock_load(zio, rvd, &ub); 1367 (void) zio_wait(zio); 1368 1369 if (ub.ub_txg != 0) 1370 spa->spa_ubsync = ub; 1371 } 1372 1373 /* 1374 * Verify that the sum of the sizes of all blocks in the pool adds up 1375 * to the SPA's sa_alloc total. 1376 */ 1377 typedef struct zdb_blkstats { 1378 uint64_t zb_asize; 1379 uint64_t zb_lsize; 1380 uint64_t zb_psize; 1381 uint64_t zb_count; 1382 } zdb_blkstats_t; 1383 1384 #define DMU_OT_DEFERRED DMU_OT_NONE 1385 #define DMU_OT_TOTAL DMU_OT_NUMTYPES 1386 1387 #define ZB_TOTAL ZB_MAXLEVEL 1388 1389 typedef struct zdb_cb { 1390 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1]; 1391 uint64_t zcb_errors[256]; 1392 traverse_blk_cache_t *zcb_cache; 1393 int zcb_readfails; 1394 int zcb_haderrors; 1395 } zdb_cb_t; 1396 1397 static void 1398 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type) 1399 { 1400 int i, error; 1401 1402 for (i = 0; i < 4; i++) { 1403 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 1404 int t = (i & 1) ? type : DMU_OT_TOTAL; 1405 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 1406 1407 zb->zb_asize += BP_GET_ASIZE(bp); 1408 zb->zb_lsize += BP_GET_LSIZE(bp); 1409 zb->zb_psize += BP_GET_PSIZE(bp); 1410 zb->zb_count++; 1411 } 1412 1413 if (dump_opt['L']) 1414 return; 1415 1416 error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark); 1417 1418 if (error == 0) 1419 return; 1420 1421 if (error == EAGAIN) 1422 (void) fatal("double-allocation, bp=%p", bp); 1423 1424 if (error == ESTALE) 1425 (void) fatal("reference to freed block, bp=%p", bp); 1426 1427 (void) fatal("fatal error %d in bp %p", error, bp); 1428 } 1429 1430 static int 1431 zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg) 1432 { 1433 zbookmark_t *zb = &bc->bc_bookmark; 1434 zdb_cb_t *zcb = arg; 1435 blkptr_t *bp = &bc->bc_blkptr; 1436 dmu_object_type_t type = BP_GET_TYPE(bp); 1437 char blkbuf[BP_SPRINTF_LEN]; 1438 int error = 0; 1439 1440 if (bc->bc_errno) { 1441 if (zcb->zcb_readfails++ < 10 && dump_opt['L']) { 1442 zdb_refresh_ubsync(spa); 1443 error = EAGAIN; 1444 } else { 1445 zcb->zcb_haderrors = 1; 1446 zcb->zcb_errors[bc->bc_errno]++; 1447 error = ERESTART; 1448 } 1449 1450 if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno)) 1451 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1452 else 1453 blkbuf[0] = '\0'; 1454 1455 (void) printf("zdb_blkptr_cb: Got error %d reading " 1456 "<%llu, %llu, %lld, %llx> %s -- %s\n", 1457 bc->bc_errno, 1458 (u_longlong_t)zb->zb_objset, 1459 (u_longlong_t)zb->zb_object, 1460 (u_longlong_t)zb->zb_level, 1461 (u_longlong_t)zb->zb_blkid, 1462 blkbuf, 1463 error == EAGAIN ? "retrying" : "skipping"); 1464 1465 return (error); 1466 } 1467 1468 zcb->zcb_readfails = 0; 1469 1470 ASSERT(!BP_IS_HOLE(bp)); 1471 1472 if (dump_opt['b'] >= 4) { 1473 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1474 (void) printf("objset %llu object %llu offset 0x%llx %s\n", 1475 (u_longlong_t)zb->zb_objset, 1476 (u_longlong_t)zb->zb_object, 1477 (u_longlong_t)blkid2offset(bc->bc_dnode, 1478 zb->zb_level, zb->zb_blkid), 1479 blkbuf); 1480 } 1481 1482 zdb_count_block(spa, zcb, bp, type); 1483 1484 return (0); 1485 } 1486 1487 static int 1488 dump_block_stats(spa_t *spa) 1489 { 1490 traverse_handle_t *th; 1491 zdb_cb_t zcb = { 0 }; 1492 traverse_blk_cache_t dummy_cache = { 0 }; 1493 zdb_blkstats_t *zb, *tzb; 1494 uint64_t alloc, space; 1495 int leaks = 0; 1496 int advance = zdb_advance; 1497 int flags; 1498 int e; 1499 1500 zcb.zcb_cache = &dummy_cache; 1501 1502 if (dump_opt['c']) 1503 advance |= ADVANCE_DATA; 1504 1505 advance |= ADVANCE_PRUNE | ADVANCE_ZIL; 1506 1507 (void) printf("\nTraversing all blocks to %sverify" 1508 " nothing leaked ...\n", 1509 dump_opt['c'] ? "verify checksums and " : ""); 1510 1511 /* 1512 * Load all space maps. As we traverse the pool, if we find a block 1513 * that's not in its space map, that indicates a double-allocation, 1514 * reference to a freed block, or an unclaimed block. Otherwise we 1515 * remove the block from the space map. If the space maps are not 1516 * empty when we're done, that indicates leaked blocks. 1517 */ 1518 if (!dump_opt['L']) 1519 zdb_space_map_load(spa); 1520 1521 /* 1522 * If there's a deferred-free bplist, process that first. 1523 */ 1524 if (spa->spa_sync_bplist_obj != 0) { 1525 bplist_t *bpl = &spa->spa_sync_bplist; 1526 blkptr_t blk; 1527 uint64_t itor = 0; 1528 1529 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset, 1530 spa->spa_sync_bplist_obj)); 1531 1532 while (bplist_iterate(bpl, &itor, &blk) == 0) { 1533 if (dump_opt['b'] >= 4) { 1534 char blkbuf[BP_SPRINTF_LEN]; 1535 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk); 1536 (void) printf("[%s] %s\n", 1537 "deferred free", blkbuf); 1538 } 1539 zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED); 1540 } 1541 1542 bplist_close(bpl); 1543 } 1544 1545 /* 1546 * Now traverse the pool. If we're reading all data to verify 1547 * checksums, do a scrubbing read so that we validate all copies. 1548 */ 1549 flags = ZIO_FLAG_CANFAIL; 1550 if (advance & ADVANCE_DATA) 1551 flags |= ZIO_FLAG_SCRUB; 1552 th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags); 1553 th->th_noread = zdb_noread; 1554 1555 traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES); 1556 1557 while (traverse_more(th) == EAGAIN) 1558 continue; 1559 1560 traverse_fini(th); 1561 1562 if (zcb.zcb_haderrors) { 1563 (void) printf("\nError counts:\n\n"); 1564 (void) printf("\t%5s %s\n", "errno", "count"); 1565 for (e = 0; e < 256; e++) { 1566 if (zcb.zcb_errors[e] != 0) { 1567 (void) printf("\t%5d %llu\n", 1568 e, (u_longlong_t)zcb.zcb_errors[e]); 1569 } 1570 } 1571 } 1572 1573 /* 1574 * Report any leaked segments. 1575 */ 1576 if (!dump_opt['L']) 1577 zdb_space_map_unload(spa); 1578 1579 if (dump_opt['L']) 1580 (void) printf("\n\n *** Live pool traversal; " 1581 "block counts are only approximate ***\n\n"); 1582 1583 alloc = spa_get_alloc(spa); 1584 space = spa_get_space(spa); 1585 1586 tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL]; 1587 1588 if (tzb->zb_asize == alloc) { 1589 (void) printf("\n\tNo leaks (block sum matches space" 1590 " maps exactly)\n"); 1591 } else { 1592 (void) printf("block traversal size %llu != alloc %llu " 1593 "(leaked %lld)\n", 1594 (u_longlong_t)tzb->zb_asize, 1595 (u_longlong_t)alloc, 1596 (u_longlong_t)(alloc - tzb->zb_asize)); 1597 leaks = 1; 1598 } 1599 1600 if (tzb->zb_count == 0) 1601 return (2); 1602 1603 (void) printf("\n"); 1604 (void) printf("\tbp count: %10llu\n", 1605 (u_longlong_t)tzb->zb_count); 1606 (void) printf("\tbp logical: %10llu\t avg: %6llu\n", 1607 (u_longlong_t)tzb->zb_lsize, 1608 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 1609 (void) printf("\tbp physical: %10llu\t avg:" 1610 " %6llu\tcompression: %6.2f\n", 1611 (u_longlong_t)tzb->zb_psize, 1612 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 1613 (double)tzb->zb_lsize / tzb->zb_psize); 1614 (void) printf("\tbp allocated: %10llu\t avg:" 1615 " %6llu\tcompression: %6.2f\n", 1616 (u_longlong_t)tzb->zb_asize, 1617 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 1618 (double)tzb->zb_lsize / tzb->zb_asize); 1619 (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n", 1620 (u_longlong_t)alloc, 100.0 * alloc / space); 1621 1622 if (dump_opt['b'] >= 2) { 1623 int l, t, level; 1624 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 1625 "\t avg\t comp\t%%Total\tType\n"); 1626 1627 for (t = 0; t <= DMU_OT_NUMTYPES; t++) { 1628 char csize[6], lsize[6], psize[6], asize[6], avg[6]; 1629 char *typename; 1630 1631 typename = t == DMU_OT_DEFERRED ? "deferred free" : 1632 t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name; 1633 1634 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 1635 (void) printf("%6s\t%5s\t%5s\t%5s" 1636 "\t%5s\t%5s\t%6s\t%s\n", 1637 "-", 1638 "-", 1639 "-", 1640 "-", 1641 "-", 1642 "-", 1643 "-", 1644 typename); 1645 continue; 1646 } 1647 1648 for (l = ZB_TOTAL - 1; l >= -1; l--) { 1649 level = (l == -1 ? ZB_TOTAL : l); 1650 zb = &zcb.zcb_type[level][t]; 1651 1652 if (zb->zb_asize == 0) 1653 continue; 1654 1655 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 1656 continue; 1657 1658 if (level == 0 && zb->zb_asize == 1659 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 1660 continue; 1661 1662 nicenum(zb->zb_count, csize); 1663 nicenum(zb->zb_lsize, lsize); 1664 nicenum(zb->zb_psize, psize); 1665 nicenum(zb->zb_asize, asize); 1666 nicenum(zb->zb_asize / zb->zb_count, avg); 1667 1668 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 1669 "\t%5.2f\t%6.2f\t", 1670 csize, lsize, psize, asize, avg, 1671 (double)zb->zb_lsize / zb->zb_psize, 1672 100.0 * zb->zb_asize / tzb->zb_asize); 1673 1674 if (level == ZB_TOTAL) 1675 (void) printf("%s\n", typename); 1676 else 1677 (void) printf(" L%d %s\n", 1678 level, typename); 1679 } 1680 } 1681 } 1682 1683 (void) printf("\n"); 1684 1685 if (leaks) 1686 return (2); 1687 1688 if (zcb.zcb_haderrors) 1689 return (3); 1690 1691 return (0); 1692 } 1693 1694 static void 1695 dump_zpool(spa_t *spa) 1696 { 1697 dsl_pool_t *dp = spa_get_dsl(spa); 1698 int rc = 0; 1699 1700 if (dump_opt['u']) 1701 dump_uberblock(&spa->spa_uberblock); 1702 1703 if (dump_opt['d'] || dump_opt['i']) { 1704 dump_dir(dp->dp_meta_objset); 1705 if (dump_opt['d'] >= 3) { 1706 dump_bplist(dp->dp_meta_objset, 1707 spa->spa_sync_bplist_obj, "Deferred frees"); 1708 dump_dtl(spa->spa_root_vdev, 0); 1709 dump_metaslabs(spa); 1710 } 1711 dmu_objset_find(spa->spa_name, dump_one_dir, NULL, 1712 DS_FIND_SNAPSHOTS); 1713 } 1714 1715 if (dump_opt['b'] || dump_opt['c']) 1716 rc = dump_block_stats(spa); 1717 1718 if (dump_opt['s']) 1719 show_pool_stats(spa); 1720 1721 if (rc != 0) 1722 exit(rc); 1723 } 1724 1725 #define ZDB_FLAG_CHECKSUM 0x0001 1726 #define ZDB_FLAG_DECOMPRESS 0x0002 1727 #define ZDB_FLAG_BSWAP 0x0004 1728 #define ZDB_FLAG_GBH 0x0008 1729 #define ZDB_FLAG_INDIRECT 0x0010 1730 #define ZDB_FLAG_PHYS 0x0020 1731 #define ZDB_FLAG_RAW 0x0040 1732 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 1733 1734 int flagbits[256]; 1735 1736 static void 1737 zdb_print_blkptr(blkptr_t *bp, int flags) 1738 { 1739 dva_t *dva = bp->blk_dva; 1740 int d; 1741 1742 if (flags & ZDB_FLAG_BSWAP) 1743 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 1744 /* 1745 * Super-ick warning: This code is also duplicated in 1746 * cmd/mdb/common/modules/zfs/zfs.c . Yeah, I hate code 1747 * replication, too. 1748 */ 1749 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1750 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d, 1751 DVA_GET_VDEV(&dva[d]), DVA_GET_OFFSET(&dva[d])); 1752 (void) printf("\tDVA[%d]: GANG: %-5s GRID: %04llx\t" 1753 "ASIZE: %llx\n", d, 1754 DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE", 1755 DVA_GET_GRID(&dva[d]), DVA_GET_ASIZE(&dva[d])); 1756 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d, 1757 DVA_GET_VDEV(&dva[d]), DVA_GET_OFFSET(&dva[d]), 1758 BP_GET_PSIZE(bp), 1759 BP_SHOULD_BYTESWAP(bp) ? "e" : "", 1760 !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ? 1761 "d" : "", 1762 DVA_GET_GANG(&dva[d]) ? "g" : "", 1763 BP_GET_COMPRESS(bp) != 0 ? "d" : ""); 1764 } 1765 (void) printf("\tLSIZE: %-16llx\t\tPSIZE: %llx\n", 1766 BP_GET_LSIZE(bp), BP_GET_PSIZE(bp)); 1767 (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE: %s\n", 1768 BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG", 1769 dmu_ot[BP_GET_TYPE(bp)].ot_name); 1770 (void) printf("\tBIRTH: %-16llx LEVEL: %-2llu\tFILL: %llx\n", 1771 (u_longlong_t)bp->blk_birth, BP_GET_LEVEL(bp), 1772 (u_longlong_t)bp->blk_fill); 1773 (void) printf("\tCKFUNC: %-16s\t\tCOMP: %s\n", 1774 zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name, 1775 zio_compress_table[BP_GET_COMPRESS(bp)].ci_name); 1776 (void) printf("\tCKSUM: %llx:%llx:%llx:%llx\n", 1777 (u_longlong_t)bp->blk_cksum.zc_word[0], 1778 (u_longlong_t)bp->blk_cksum.zc_word[1], 1779 (u_longlong_t)bp->blk_cksum.zc_word[2], 1780 (u_longlong_t)bp->blk_cksum.zc_word[3]); 1781 } 1782 1783 static void 1784 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 1785 { 1786 int i; 1787 1788 for (i = 0; i < nbps; i++) 1789 zdb_print_blkptr(&bp[i], flags); 1790 } 1791 1792 static void 1793 zdb_dump_gbh(void *buf, int flags) 1794 { 1795 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 1796 } 1797 1798 static void 1799 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 1800 { 1801 if (flags & ZDB_FLAG_BSWAP) 1802 byteswap_uint64_array(buf, size); 1803 (void) write(2, buf, size); 1804 } 1805 1806 static void 1807 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 1808 { 1809 uint64_t *d = (uint64_t *)buf; 1810 int nwords = size / sizeof (uint64_t); 1811 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 1812 int i, j; 1813 char *hdr, *c; 1814 1815 1816 if (do_bswap) 1817 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 1818 else 1819 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 1820 1821 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 1822 1823 for (i = 0; i < nwords; i += 2) { 1824 (void) printf("%06llx: %016llx %016llx ", 1825 (u_longlong_t)(i * sizeof (uint64_t)), 1826 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 1827 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 1828 1829 c = (char *)&d[i]; 1830 for (j = 0; j < 2 * sizeof (uint64_t); j++) 1831 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 1832 (void) printf("\n"); 1833 } 1834 } 1835 1836 /* 1837 * There are two acceptable formats: 1838 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 1839 * child[.child]* - For example: 0.1.1 1840 * 1841 * The second form can be used to specify arbitrary vdevs anywhere 1842 * in the heirarchy. For example, in a pool with a mirror of 1843 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 1844 */ 1845 static vdev_t * 1846 zdb_vdev_lookup(vdev_t *vdev, char *path) 1847 { 1848 char *s, *p, *q; 1849 int i; 1850 1851 if (vdev == NULL) 1852 return (NULL); 1853 1854 /* First, assume the x.x.x.x format */ 1855 i = (int)strtoul(path, &s, 10); 1856 if (s == path || (s && *s != '.' && *s != '\0')) 1857 goto name; 1858 if (i < 0 || i >= vdev->vdev_children) 1859 return (NULL); 1860 1861 vdev = vdev->vdev_child[i]; 1862 if (*s == '\0') 1863 return (vdev); 1864 return (zdb_vdev_lookup(vdev, s+1)); 1865 1866 name: 1867 for (i = 0; i < vdev->vdev_children; i++) { 1868 vdev_t *vc = vdev->vdev_child[i]; 1869 1870 if (vc->vdev_path == NULL) { 1871 vc = zdb_vdev_lookup(vc, path); 1872 if (vc == NULL) 1873 continue; 1874 else 1875 return (vc); 1876 } 1877 1878 p = strrchr(vc->vdev_path, '/'); 1879 p = p ? p + 1 : vc->vdev_path; 1880 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 1881 1882 if (strcmp(vc->vdev_path, path) == 0) 1883 return (vc); 1884 if (strcmp(p, path) == 0) 1885 return (vc); 1886 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 1887 return (vc); 1888 } 1889 1890 return (NULL); 1891 } 1892 1893 /* 1894 * Read a block from a pool and print it out. The syntax of the 1895 * block descriptor is: 1896 * 1897 * pool:vdev_specifier:offset:size[:flags] 1898 * 1899 * pool - The name of the pool you wish to read from 1900 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 1901 * offset - offset, in hex, in bytes 1902 * size - Amount of data to read, in hex, in bytes 1903 * flags - A string of characters specifying options 1904 * b: Decode a blkptr at given offset within block 1905 * *c: Calculate and display checksums 1906 * *d: Decompress data before dumping 1907 * e: Byteswap data before dumping 1908 * *g: Display data as a gang block header 1909 * *i: Display as an indirect block 1910 * p: Do I/O to physical offset 1911 * r: Dump raw data to stdout 1912 * 1913 * * = not yet implemented 1914 */ 1915 static void 1916 zdb_read_block(char *thing, spa_t **spap) 1917 { 1918 spa_t *spa = *spap; 1919 int flags = 0; 1920 uint64_t offset = 0, size = 0, blkptr_offset = 0; 1921 zio_t *zio; 1922 vdev_t *vd; 1923 void *buf; 1924 char *s, *p, *dup, *spa_name, *vdev, *flagstr; 1925 int i, error, zio_flags; 1926 1927 dup = strdup(thing); 1928 s = strtok(dup, ":"); 1929 spa_name = s ? s : ""; 1930 s = strtok(NULL, ":"); 1931 vdev = s ? s : ""; 1932 s = strtok(NULL, ":"); 1933 offset = strtoull(s ? s : "", NULL, 16); 1934 s = strtok(NULL, ":"); 1935 size = strtoull(s ? s : "", NULL, 16); 1936 s = strtok(NULL, ":"); 1937 flagstr = s ? s : ""; 1938 1939 s = NULL; 1940 if (size == 0) 1941 s = "size must not be zero"; 1942 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 1943 s = "size must be a multiple of sector size"; 1944 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 1945 s = "offset must be a multiple of sector size"; 1946 if (s) { 1947 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 1948 free(dup); 1949 return; 1950 } 1951 1952 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 1953 for (i = 0; flagstr[i]; i++) { 1954 int bit = flagbits[flagstr[i]]; 1955 1956 if (bit == 0) { 1957 (void) printf("***Invalid flag: %c\n", 1958 flagstr[i]); 1959 continue; 1960 } 1961 flags |= bit; 1962 1963 /* If it's not something with an argument, keep going */ 1964 if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS | 1965 ZDB_FLAG_PRINT_BLKPTR)) == 0) 1966 continue; 1967 1968 p = &flagstr[i + 1]; 1969 if (bit == ZDB_FLAG_PRINT_BLKPTR) 1970 blkptr_offset = strtoull(p, &p, 16); 1971 if (*p != ':' && *p != '\0') { 1972 (void) printf("***Invalid flag arg: '%s'\n", s); 1973 free(dup); 1974 return; 1975 } 1976 } 1977 } 1978 1979 if (spa == NULL || spa->spa_name == NULL || 1980 strcmp(spa->spa_name, spa_name)) { 1981 if (spa && spa->spa_name) 1982 spa_close(spa, (void *)zdb_read_block); 1983 error = spa_open(spa_name, spap, (void *)zdb_read_block); 1984 if (error) 1985 fatal("Failed to open pool '%s': errno = %d\n", 1986 spa_name, error); 1987 spa = *spap; 1988 } 1989 1990 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 1991 if (vd == NULL) { 1992 (void) printf("***Invalid vdev: %s\n", vdev); 1993 free(dup); 1994 return; 1995 } else { 1996 if (vd->vdev_path) 1997 (void) printf("Found vdev: %s\n", vd->vdev_path); 1998 else 1999 (void) printf("Found vdev type: %s\n", 2000 vd->vdev_ops->vdev_op_type); 2001 } 2002 2003 buf = umem_alloc(size, UMEM_NOFAIL); 2004 2005 zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 2006 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK; 2007 2008 if (flags & ZDB_FLAG_PHYS) 2009 zio_flags |= ZIO_FLAG_PHYSICAL; 2010 2011 zio = zio_root(spa, NULL, NULL, 0); 2012 /* XXX todo - cons up a BP so RAID-Z will be happy */ 2013 zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size, 2014 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL)); 2015 error = zio_wait(zio); 2016 2017 if (error) { 2018 (void) printf("Read of %s failed, error: %d\n", thing, error); 2019 goto out; 2020 } 2021 2022 if (flags & ZDB_FLAG_PRINT_BLKPTR) 2023 zdb_print_blkptr((blkptr_t *)(void *) 2024 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 2025 else if (flags & ZDB_FLAG_RAW) 2026 zdb_dump_block_raw(buf, size, flags); 2027 else if (flags & ZDB_FLAG_INDIRECT) 2028 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 2029 flags); 2030 else if (flags & ZDB_FLAG_GBH) 2031 zdb_dump_gbh(buf, flags); 2032 else 2033 zdb_dump_block(thing, buf, size, flags); 2034 2035 out: 2036 umem_free(buf, size); 2037 free(dup); 2038 } 2039 2040 int 2041 main(int argc, char **argv) 2042 { 2043 int i, c; 2044 struct rlimit rl = { 1024, 1024 }; 2045 spa_t *spa; 2046 objset_t *os = NULL; 2047 char *endstr; 2048 int dump_all = 1; 2049 int verbose = 0; 2050 int error; 2051 int flag, set; 2052 vdev_knob_t *vk; 2053 2054 (void) setrlimit(RLIMIT_NOFILE, &rl); 2055 (void) enable_extended_FILE_stdio(-1, -1); 2056 2057 dprintf_setup(&argc, argv); 2058 2059 while ((c = getopt(argc, argv, "udibcsvCLO:B:UlR")) != -1) { 2060 switch (c) { 2061 case 'u': 2062 case 'd': 2063 case 'i': 2064 case 'b': 2065 case 'c': 2066 case 's': 2067 case 'C': 2068 case 'l': 2069 case 'R': 2070 dump_opt[c]++; 2071 dump_all = 0; 2072 break; 2073 case 'L': 2074 dump_opt[c]++; 2075 break; 2076 case 'O': 2077 endstr = optarg; 2078 if (endstr[0] == '!') { 2079 endstr++; 2080 set = 0; 2081 } else { 2082 set = 1; 2083 } 2084 if (strcmp(endstr, "post") == 0) { 2085 flag = ADVANCE_PRE; 2086 set = !set; 2087 } else if (strcmp(endstr, "pre") == 0) { 2088 flag = ADVANCE_PRE; 2089 } else if (strcmp(endstr, "prune") == 0) { 2090 flag = ADVANCE_PRUNE; 2091 } else if (strcmp(endstr, "data") == 0) { 2092 flag = ADVANCE_DATA; 2093 } else if (strcmp(endstr, "holes") == 0) { 2094 flag = ADVANCE_HOLES; 2095 } else { 2096 usage(); 2097 } 2098 if (set) 2099 zdb_advance |= flag; 2100 else 2101 zdb_advance &= ~flag; 2102 break; 2103 case 'B': 2104 endstr = optarg - 1; 2105 zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0); 2106 zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0); 2107 zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0); 2108 zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16); 2109 (void) printf("simulating bad block " 2110 "<%llu, %llu, %lld, %llx>\n", 2111 (u_longlong_t)zdb_noread.zb_objset, 2112 (u_longlong_t)zdb_noread.zb_object, 2113 (u_longlong_t)zdb_noread.zb_level, 2114 (u_longlong_t)zdb_noread.zb_blkid); 2115 break; 2116 case 'v': 2117 verbose++; 2118 break; 2119 case 'U': 2120 spa_config_dir = "/tmp"; 2121 break; 2122 default: 2123 usage(); 2124 break; 2125 } 2126 } 2127 2128 kernel_init(FREAD); 2129 2130 /* 2131 * Disable vdev caching. If we don't do this, live pool traversal 2132 * won't make progress because it will never see disk updates. 2133 */ 2134 for (vk = vdev_knob_next(NULL); vk != NULL; vk = vdev_knob_next(vk)) { 2135 if (strcmp(vk->vk_name, "cache_size") == 0) 2136 vk->vk_default = 0; 2137 } 2138 2139 for (c = 0; c < 256; c++) { 2140 if (dump_all && c != 'L' && c != 'l' && c != 'R') 2141 dump_opt[c] = 1; 2142 if (dump_opt[c]) 2143 dump_opt[c] += verbose; 2144 } 2145 2146 argc -= optind; 2147 argv += optind; 2148 2149 if (argc < 1) { 2150 if (dump_opt['C']) { 2151 dump_config(NULL); 2152 return (0); 2153 } 2154 usage(); 2155 } 2156 2157 if (dump_opt['l']) { 2158 dump_label(argv[0]); 2159 return (0); 2160 } 2161 2162 if (dump_opt['R']) { 2163 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 2164 flagbits['c'] = ZDB_FLAG_CHECKSUM; 2165 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 2166 flagbits['e'] = ZDB_FLAG_BSWAP; 2167 flagbits['g'] = ZDB_FLAG_GBH; 2168 flagbits['i'] = ZDB_FLAG_INDIRECT; 2169 flagbits['p'] = ZDB_FLAG_PHYS; 2170 flagbits['r'] = ZDB_FLAG_RAW; 2171 2172 spa = NULL; 2173 while (argv[0]) { 2174 zdb_read_block(argv[0], &spa); 2175 argv++; 2176 argc--; 2177 } 2178 if (spa) 2179 spa_close(spa, (void *)zdb_read_block); 2180 return (0); 2181 } 2182 2183 if (dump_opt['C']) 2184 dump_config(argv[0]); 2185 2186 if (strchr(argv[0], '/') != NULL) { 2187 error = dmu_objset_open(argv[0], DMU_OST_ANY, 2188 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 2189 } else { 2190 error = spa_open(argv[0], &spa, FTAG); 2191 } 2192 2193 if (error) 2194 fatal("can't open %s: error %d", argv[0], error); 2195 2196 argv++; 2197 if (--argc > 0) { 2198 zopt_objects = argc; 2199 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 2200 for (i = 0; i < zopt_objects; i++) { 2201 errno = 0; 2202 zopt_object[i] = strtoull(argv[i], NULL, 0); 2203 if (zopt_object[i] == 0 && errno != 0) 2204 fatal("bad object number %s: %s", 2205 argv[i], strerror(errno)); 2206 } 2207 } 2208 2209 if (os != NULL) { 2210 dump_dir(os); 2211 dmu_objset_close(os); 2212 } else { 2213 dump_zpool(spa); 2214 spa_close(spa, FTAG); 2215 } 2216 2217 kernel_fini(); 2218 2219 return (0); 2220 } 2221