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 2008 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 #include <sys/zfs_fuid.h> 55 #undef ZFS_MAXNAMELEN 56 #undef verify 57 #include <libzfs.h> 58 59 const char cmdname[] = "zdb"; 60 uint8_t dump_opt[256]; 61 62 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); 63 64 extern void dump_intent_log(zilog_t *); 65 uint64_t *zopt_object = NULL; 66 int zopt_objects = 0; 67 int zdb_advance = ADVANCE_PRE; 68 zbookmark_t zdb_noread = { 0, 0, ZB_NO_LEVEL, 0 }; 69 libzfs_handle_t *g_zfs; 70 71 /* 72 * These libumem hooks provide a reasonable set of defaults for the allocator's 73 * debugging facilities. 74 */ 75 const char * 76 _umem_debug_init() 77 { 78 return ("default,verbose"); /* $UMEM_DEBUG setting */ 79 } 80 81 const char * 82 _umem_logging_init(void) 83 { 84 return ("fail,contents"); /* $UMEM_LOGGING setting */ 85 } 86 87 static void 88 usage(void) 89 { 90 (void) fprintf(stderr, 91 "Usage: %s [-udibcsvL] [-U cachefile_path] [-O order] " 92 "[-B os:obj:level:blkid] " 93 "dataset [object...]\n" 94 " %s -C [pool]\n" 95 " %s -l dev\n" 96 " %s -R vdev:offset:size:flags\n" 97 " %s [-p path_to_vdev_dir]\n" 98 " %s -e pool | GUID | devid ...\n", 99 cmdname, cmdname, cmdname, cmdname, cmdname, cmdname); 100 101 (void) fprintf(stderr, " -u uberblock\n"); 102 (void) fprintf(stderr, " -d datasets\n"); 103 (void) fprintf(stderr, " -C cached pool configuration\n"); 104 (void) fprintf(stderr, " -i intent logs\n"); 105 (void) fprintf(stderr, " -b block statistics\n"); 106 (void) fprintf(stderr, " -c checksum all data blocks\n"); 107 (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); 108 (void) fprintf(stderr, " -v verbose (applies to all others)\n"); 109 (void) fprintf(stderr, " -l dump label contents\n"); 110 (void) fprintf(stderr, " -L live pool (allows some errors)\n"); 111 (void) fprintf(stderr, " -O [!]<pre|post|prune|data|holes> " 112 "visitation order\n"); 113 (void) fprintf(stderr, " -U cachefile_path -- use alternate " 114 "cachefile\n"); 115 (void) fprintf(stderr, " -B objset:object:level:blkid -- " 116 "simulate bad block\n"); 117 (void) fprintf(stderr, " -R read and display block from a" 118 "device\n"); 119 (void) fprintf(stderr, " -e Pool is exported/destroyed/" 120 "has altroot\n"); 121 (void) fprintf(stderr, " -p <Path to vdev dir> (use with -e)\n"); 122 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " 123 "to make only that option verbose\n"); 124 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); 125 exit(1); 126 } 127 128 static void 129 fatal(const char *fmt, ...) 130 { 131 va_list ap; 132 133 va_start(ap, fmt); 134 (void) fprintf(stderr, "%s: ", cmdname); 135 (void) vfprintf(stderr, fmt, ap); 136 va_end(ap); 137 (void) fprintf(stderr, "\n"); 138 139 exit(1); 140 } 141 142 static void 143 dump_nvlist(nvlist_t *list, int indent) 144 { 145 nvpair_t *elem = NULL; 146 147 while ((elem = nvlist_next_nvpair(list, elem)) != NULL) { 148 switch (nvpair_type(elem)) { 149 case DATA_TYPE_STRING: 150 { 151 char *value; 152 153 VERIFY(nvpair_value_string(elem, &value) == 0); 154 (void) printf("%*s%s='%s'\n", indent, "", 155 nvpair_name(elem), value); 156 } 157 break; 158 159 case DATA_TYPE_UINT64: 160 { 161 uint64_t value; 162 163 VERIFY(nvpair_value_uint64(elem, &value) == 0); 164 (void) printf("%*s%s=%llu\n", indent, "", 165 nvpair_name(elem), (u_longlong_t)value); 166 } 167 break; 168 169 case DATA_TYPE_NVLIST: 170 { 171 nvlist_t *value; 172 173 VERIFY(nvpair_value_nvlist(elem, &value) == 0); 174 (void) printf("%*s%s\n", indent, "", 175 nvpair_name(elem)); 176 dump_nvlist(value, indent + 4); 177 } 178 break; 179 180 case DATA_TYPE_NVLIST_ARRAY: 181 { 182 nvlist_t **value; 183 uint_t c, count; 184 185 VERIFY(nvpair_value_nvlist_array(elem, &value, 186 &count) == 0); 187 188 for (c = 0; c < count; c++) { 189 (void) printf("%*s%s[%u]\n", indent, "", 190 nvpair_name(elem), c); 191 dump_nvlist(value[c], indent + 8); 192 } 193 } 194 break; 195 196 default: 197 198 (void) printf("bad config type %d for %s\n", 199 nvpair_type(elem), nvpair_name(elem)); 200 } 201 } 202 } 203 204 /* ARGSUSED */ 205 static void 206 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) 207 { 208 nvlist_t *nv; 209 size_t nvsize = *(uint64_t *)data; 210 char *packed = umem_alloc(nvsize, UMEM_NOFAIL); 211 212 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed)); 213 214 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); 215 216 umem_free(packed, nvsize); 217 218 dump_nvlist(nv, 8); 219 220 nvlist_free(nv); 221 } 222 223 const char dump_zap_stars[] = "****************************************"; 224 const int dump_zap_width = sizeof (dump_zap_stars) - 1; 225 226 static void 227 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE]) 228 { 229 int i; 230 int minidx = ZAP_HISTOGRAM_SIZE - 1; 231 int maxidx = 0; 232 uint64_t max = 0; 233 234 for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) { 235 if (histo[i] > max) 236 max = histo[i]; 237 if (histo[i] > 0 && i > maxidx) 238 maxidx = i; 239 if (histo[i] > 0 && i < minidx) 240 minidx = i; 241 } 242 243 if (max < dump_zap_width) 244 max = dump_zap_width; 245 246 for (i = minidx; i <= maxidx; i++) 247 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i], 248 &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]); 249 } 250 251 static void 252 dump_zap_stats(objset_t *os, uint64_t object) 253 { 254 int error; 255 zap_stats_t zs; 256 257 error = zap_get_stats(os, object, &zs); 258 if (error) 259 return; 260 261 if (zs.zs_ptrtbl_len == 0) { 262 ASSERT(zs.zs_num_blocks == 1); 263 (void) printf("\tmicrozap: %llu bytes, %llu entries\n", 264 (u_longlong_t)zs.zs_blocksize, 265 (u_longlong_t)zs.zs_num_entries); 266 return; 267 } 268 269 (void) printf("\tFat ZAP stats:\n"); 270 271 (void) printf("\t\tPointer table:\n"); 272 (void) printf("\t\t\t%llu elements\n", 273 (u_longlong_t)zs.zs_ptrtbl_len); 274 (void) printf("\t\t\tzt_blk: %llu\n", 275 (u_longlong_t)zs.zs_ptrtbl_zt_blk); 276 (void) printf("\t\t\tzt_numblks: %llu\n", 277 (u_longlong_t)zs.zs_ptrtbl_zt_numblks); 278 (void) printf("\t\t\tzt_shift: %llu\n", 279 (u_longlong_t)zs.zs_ptrtbl_zt_shift); 280 (void) printf("\t\t\tzt_blks_copied: %llu\n", 281 (u_longlong_t)zs.zs_ptrtbl_blks_copied); 282 (void) printf("\t\t\tzt_nextblk: %llu\n", 283 (u_longlong_t)zs.zs_ptrtbl_nextblk); 284 285 (void) printf("\t\tZAP entries: %llu\n", 286 (u_longlong_t)zs.zs_num_entries); 287 (void) printf("\t\tLeaf blocks: %llu\n", 288 (u_longlong_t)zs.zs_num_leafs); 289 (void) printf("\t\tTotal blocks: %llu\n", 290 (u_longlong_t)zs.zs_num_blocks); 291 (void) printf("\t\tzap_block_type: 0x%llx\n", 292 (u_longlong_t)zs.zs_block_type); 293 (void) printf("\t\tzap_magic: 0x%llx\n", 294 (u_longlong_t)zs.zs_magic); 295 (void) printf("\t\tzap_salt: 0x%llx\n", 296 (u_longlong_t)zs.zs_salt); 297 298 (void) printf("\t\tLeafs with 2^n pointers:\n"); 299 dump_zap_histogram(zs.zs_leafs_with_2n_pointers); 300 301 (void) printf("\t\tBlocks with n*5 entries:\n"); 302 dump_zap_histogram(zs.zs_blocks_with_n5_entries); 303 304 (void) printf("\t\tBlocks n/10 full:\n"); 305 dump_zap_histogram(zs.zs_blocks_n_tenths_full); 306 307 (void) printf("\t\tEntries with n chunks:\n"); 308 dump_zap_histogram(zs.zs_entries_using_n_chunks); 309 310 (void) printf("\t\tBuckets with n entries:\n"); 311 dump_zap_histogram(zs.zs_buckets_with_n_entries); 312 } 313 314 /*ARGSUSED*/ 315 static void 316 dump_none(objset_t *os, uint64_t object, void *data, size_t size) 317 { 318 } 319 320 /*ARGSUSED*/ 321 void 322 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) 323 { 324 } 325 326 /*ARGSUSED*/ 327 static void 328 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) 329 { 330 } 331 332 /*ARGSUSED*/ 333 static void 334 dump_zap(objset_t *os, uint64_t object, void *data, size_t size) 335 { 336 zap_cursor_t zc; 337 zap_attribute_t attr; 338 void *prop; 339 int i; 340 341 dump_zap_stats(os, object); 342 (void) printf("\n"); 343 344 for (zap_cursor_init(&zc, os, object); 345 zap_cursor_retrieve(&zc, &attr) == 0; 346 zap_cursor_advance(&zc)) { 347 (void) printf("\t\t%s = ", attr.za_name); 348 if (attr.za_num_integers == 0) { 349 (void) printf("\n"); 350 continue; 351 } 352 prop = umem_zalloc(attr.za_num_integers * 353 attr.za_integer_length, UMEM_NOFAIL); 354 (void) zap_lookup(os, object, attr.za_name, 355 attr.za_integer_length, attr.za_num_integers, prop); 356 if (attr.za_integer_length == 1) { 357 (void) printf("%s", (char *)prop); 358 } else { 359 for (i = 0; i < attr.za_num_integers; i++) { 360 switch (attr.za_integer_length) { 361 case 2: 362 (void) printf("%u ", 363 ((uint16_t *)prop)[i]); 364 break; 365 case 4: 366 (void) printf("%u ", 367 ((uint32_t *)prop)[i]); 368 break; 369 case 8: 370 (void) printf("%lld ", 371 (u_longlong_t)((int64_t *)prop)[i]); 372 break; 373 } 374 } 375 } 376 (void) printf("\n"); 377 umem_free(prop, attr.za_num_integers * attr.za_integer_length); 378 } 379 zap_cursor_fini(&zc); 380 } 381 382 /*ARGSUSED*/ 383 static void 384 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size) 385 { 386 zap_cursor_t zc; 387 zap_attribute_t attr; 388 const char *typenames[] = { 389 /* 0 */ "not specified", 390 /* 1 */ "FIFO", 391 /* 2 */ "Character Device", 392 /* 3 */ "3 (invalid)", 393 /* 4 */ "Directory", 394 /* 5 */ "5 (invalid)", 395 /* 6 */ "Block Device", 396 /* 7 */ "7 (invalid)", 397 /* 8 */ "Regular File", 398 /* 9 */ "9 (invalid)", 399 /* 10 */ "Symbolic Link", 400 /* 11 */ "11 (invalid)", 401 /* 12 */ "Socket", 402 /* 13 */ "Door", 403 /* 14 */ "Event Port", 404 /* 15 */ "15 (invalid)", 405 }; 406 407 dump_zap_stats(os, object); 408 (void) printf("\n"); 409 410 for (zap_cursor_init(&zc, os, object); 411 zap_cursor_retrieve(&zc, &attr) == 0; 412 zap_cursor_advance(&zc)) { 413 (void) printf("\t\t%s = %lld (type: %s)\n", 414 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer), 415 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]); 416 } 417 zap_cursor_fini(&zc); 418 } 419 420 static void 421 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm) 422 { 423 uint64_t alloc, offset, entry; 424 uint8_t mapshift = sm->sm_shift; 425 uint64_t mapstart = sm->sm_start; 426 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID", 427 "INVALID", "INVALID", "INVALID", "INVALID" }; 428 429 if (smo->smo_object == 0) 430 return; 431 432 /* 433 * Print out the freelist entries in both encoded and decoded form. 434 */ 435 alloc = 0; 436 for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) { 437 VERIFY(0 == dmu_read(os, smo->smo_object, offset, 438 sizeof (entry), &entry)); 439 if (SM_DEBUG_DECODE(entry)) { 440 (void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n", 441 (u_longlong_t)(offset / sizeof (entry)), 442 ddata[SM_DEBUG_ACTION_DECODE(entry)], 443 (u_longlong_t)SM_DEBUG_TXG_DECODE(entry), 444 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry)); 445 } else { 446 (void) printf("\t\t[%4llu] %c range:" 447 " %08llx-%08llx size: %06llx\n", 448 (u_longlong_t)(offset / sizeof (entry)), 449 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 450 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 451 mapshift) + mapstart), 452 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 453 mapshift) + mapstart + (SM_RUN_DECODE(entry) << 454 mapshift)), 455 (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift)); 456 if (SM_TYPE_DECODE(entry) == SM_ALLOC) 457 alloc += SM_RUN_DECODE(entry) << mapshift; 458 else 459 alloc -= SM_RUN_DECODE(entry) << mapshift; 460 } 461 } 462 if (alloc != smo->smo_alloc) { 463 (void) printf("space_map_object alloc (%llu) INCONSISTENT " 464 "with space map summary (%llu)\n", 465 (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc); 466 } 467 } 468 469 static void 470 dump_metaslab(metaslab_t *msp) 471 { 472 char freebuf[5]; 473 space_map_obj_t *smo = &msp->ms_smo; 474 vdev_t *vd = msp->ms_group->mg_vd; 475 spa_t *spa = vd->vdev_spa; 476 477 nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf); 478 479 if (dump_opt['d'] <= 5) { 480 (void) printf("\t%10llx %10llu %5s\n", 481 (u_longlong_t)msp->ms_map.sm_start, 482 (u_longlong_t)smo->smo_object, 483 freebuf); 484 return; 485 } 486 487 (void) printf( 488 "\tvdev %llu offset %08llx spacemap %4llu free %5s\n", 489 (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start, 490 (u_longlong_t)smo->smo_object, freebuf); 491 492 ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift)); 493 494 dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map); 495 } 496 497 static void 498 dump_metaslabs(spa_t *spa) 499 { 500 vdev_t *rvd = spa->spa_root_vdev; 501 vdev_t *vd; 502 int c, m; 503 504 (void) printf("\nMetaslabs:\n"); 505 506 for (c = 0; c < rvd->vdev_children; c++) { 507 vd = rvd->vdev_child[c]; 508 509 (void) printf("\n vdev %llu = %s\n\n", 510 (u_longlong_t)vd->vdev_id, vdev_description(vd)); 511 512 if (dump_opt['d'] <= 5) { 513 (void) printf("\t%10s %10s %5s\n", 514 "offset", "spacemap", "free"); 515 (void) printf("\t%10s %10s %5s\n", 516 "------", "--------", "----"); 517 } 518 for (m = 0; m < vd->vdev_ms_count; m++) 519 dump_metaslab(vd->vdev_ms[m]); 520 (void) printf("\n"); 521 } 522 } 523 524 static void 525 dump_dtl(vdev_t *vd, int indent) 526 { 527 avl_tree_t *t = &vd->vdev_dtl_map.sm_root; 528 space_seg_t *ss; 529 vdev_t *pvd; 530 int c; 531 532 if (indent == 0) 533 (void) printf("\nDirty time logs:\n\n"); 534 535 (void) printf("\t%*s%s\n", indent, "", vdev_description(vd)); 536 537 for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) { 538 /* 539 * Everything in this DTL must appear in all parent DTL unions. 540 */ 541 for (pvd = vd; pvd; pvd = pvd->vdev_parent) 542 ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map, 543 ss->ss_start, ss->ss_end - ss->ss_start)); 544 (void) printf("\t%*soutage [%llu,%llu] length %llu\n", 545 indent, "", 546 (u_longlong_t)ss->ss_start, 547 (u_longlong_t)ss->ss_end - 1, 548 (u_longlong_t)(ss->ss_end - ss->ss_start)); 549 } 550 551 (void) printf("\n"); 552 553 if (dump_opt['d'] > 5 && vd->vdev_children == 0) { 554 dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl, 555 &vd->vdev_dtl_map); 556 (void) printf("\n"); 557 } 558 559 for (c = 0; c < vd->vdev_children; c++) 560 dump_dtl(vd->vdev_child[c], indent + 4); 561 } 562 563 /*ARGSUSED*/ 564 static void 565 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 566 { 567 } 568 569 static uint64_t 570 blkid2offset(dnode_phys_t *dnp, int level, uint64_t blkid) 571 { 572 if (level < 0) 573 return (blkid); 574 575 return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 576 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 577 } 578 579 static void 580 sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas) 581 { 582 dva_t *dva = bp->blk_dva; 583 int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1; 584 int i; 585 586 blkbuf[0] = '\0'; 587 588 for (i = 0; i < ndvas; i++) 589 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ", 590 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 591 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 592 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 593 594 (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu", 595 (u_longlong_t)BP_GET_LSIZE(bp), 596 (u_longlong_t)BP_GET_PSIZE(bp), 597 (u_longlong_t)bp->blk_fill, 598 (u_longlong_t)bp->blk_birth); 599 } 600 601 /* ARGSUSED */ 602 static int 603 zdb_indirect_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) 604 { 605 zbookmark_t *zb = &bc->bc_bookmark; 606 blkptr_t *bp = &bc->bc_blkptr; 607 void *data = bc->bc_data; 608 dnode_phys_t *dnp = bc->bc_dnode; 609 char blkbuf[BP_SPRINTF_LEN + 80]; 610 int l; 611 612 if (bc->bc_errno) { 613 (void) sprintf(blkbuf, 614 "Error %d reading <%llu, %llu, %lld, %llu>: ", 615 bc->bc_errno, 616 (u_longlong_t)zb->zb_objset, 617 (u_longlong_t)zb->zb_object, 618 (u_longlong_t)zb->zb_level, 619 (u_longlong_t)zb->zb_blkid); 620 goto out; 621 } 622 623 if (zb->zb_level == -1) { 624 ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); 625 ASSERT3U(BP_GET_LEVEL(bp), ==, 0); 626 } else { 627 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 628 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 629 } 630 631 if (zb->zb_level > 0) { 632 uint64_t fill = 0; 633 blkptr_t *bpx, *bpend; 634 635 for (bpx = data, bpend = bpx + BP_GET_LSIZE(bp) / sizeof (*bpx); 636 bpx < bpend; bpx++) { 637 if (bpx->blk_birth != 0) { 638 fill += bpx->blk_fill; 639 } else { 640 ASSERT(bpx->blk_fill == 0); 641 } 642 } 643 ASSERT3U(fill, ==, bp->blk_fill); 644 } 645 646 if (zb->zb_level == 0 && dnp->dn_type == DMU_OT_DNODE) { 647 uint64_t fill = 0; 648 dnode_phys_t *dnx, *dnend; 649 650 for (dnx = data, dnend = dnx + (BP_GET_LSIZE(bp)>>DNODE_SHIFT); 651 dnx < dnend; dnx++) { 652 if (dnx->dn_type != DMU_OT_NONE) 653 fill++; 654 } 655 ASSERT3U(fill, ==, bp->blk_fill); 656 } 657 658 (void) sprintf(blkbuf, "%16llx ", 659 (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid)); 660 661 ASSERT(zb->zb_level >= 0); 662 663 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 664 if (l == zb->zb_level) { 665 (void) sprintf(blkbuf + strlen(blkbuf), "L%llx", 666 (u_longlong_t)zb->zb_level); 667 } else { 668 (void) sprintf(blkbuf + strlen(blkbuf), " "); 669 } 670 } 671 672 out: 673 if (bp->blk_birth == 0) { 674 (void) sprintf(blkbuf + strlen(blkbuf), "<hole>"); 675 (void) printf("%s\n", blkbuf); 676 } else { 677 sprintf_blkptr_compact(blkbuf + strlen(blkbuf), bp, 678 dump_opt['d'] > 5 ? 1 : 0); 679 (void) printf("%s\n", blkbuf); 680 } 681 682 return (bc->bc_errno ? ERESTART : 0); 683 } 684 685 /*ARGSUSED*/ 686 static void 687 dump_indirect(objset_t *os, uint64_t object, void *data, size_t size) 688 { 689 traverse_handle_t *th; 690 uint64_t objset = dmu_objset_id(os); 691 int advance = zdb_advance; 692 693 (void) printf("Indirect blocks:\n"); 694 695 if (object == 0) 696 advance |= ADVANCE_DATA; 697 698 th = traverse_init(dmu_objset_spa(os), zdb_indirect_cb, NULL, advance, 699 ZIO_FLAG_CANFAIL); 700 th->th_noread = zdb_noread; 701 702 traverse_add_dnode(th, 0, -1ULL, objset, object); 703 704 while (traverse_more(th) == EAGAIN) 705 continue; 706 707 (void) printf("\n"); 708 709 traverse_fini(th); 710 } 711 712 /*ARGSUSED*/ 713 static void 714 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 715 { 716 dsl_dir_phys_t *dd = data; 717 time_t crtime; 718 char used[6], compressed[6], uncompressed[6], quota[6], resv[6]; 719 720 if (dd == NULL) 721 return; 722 723 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t)); 724 725 crtime = dd->dd_creation_time; 726 nicenum(dd->dd_used_bytes, used); 727 nicenum(dd->dd_compressed_bytes, compressed); 728 nicenum(dd->dd_uncompressed_bytes, uncompressed); 729 nicenum(dd->dd_quota, quota); 730 nicenum(dd->dd_reserved, resv); 731 732 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 733 (void) printf("\t\thead_dataset_obj = %llu\n", 734 (u_longlong_t)dd->dd_head_dataset_obj); 735 (void) printf("\t\tparent_dir_obj = %llu\n", 736 (u_longlong_t)dd->dd_parent_obj); 737 (void) printf("\t\torigin_obj = %llu\n", 738 (u_longlong_t)dd->dd_origin_obj); 739 (void) printf("\t\tchild_dir_zapobj = %llu\n", 740 (u_longlong_t)dd->dd_child_dir_zapobj); 741 (void) printf("\t\tused_bytes = %s\n", used); 742 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 743 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 744 (void) printf("\t\tquota = %s\n", quota); 745 (void) printf("\t\treserved = %s\n", resv); 746 (void) printf("\t\tprops_zapobj = %llu\n", 747 (u_longlong_t)dd->dd_props_zapobj); 748 (void) printf("\t\tdeleg_zapobj = %llu\n", 749 (u_longlong_t)dd->dd_deleg_zapobj); 750 } 751 752 /*ARGSUSED*/ 753 static void 754 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 755 { 756 dsl_dataset_phys_t *ds = data; 757 time_t crtime; 758 char used[6], compressed[6], uncompressed[6], unique[6]; 759 char blkbuf[BP_SPRINTF_LEN]; 760 761 if (ds == NULL) 762 return; 763 764 ASSERT(size == sizeof (*ds)); 765 crtime = ds->ds_creation_time; 766 nicenum(ds->ds_used_bytes, used); 767 nicenum(ds->ds_compressed_bytes, compressed); 768 nicenum(ds->ds_uncompressed_bytes, uncompressed); 769 nicenum(ds->ds_unique_bytes, unique); 770 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp); 771 772 (void) printf("\t\tdataset_obj = %llu\n", 773 (u_longlong_t)ds->ds_dir_obj); 774 (void) printf("\t\tprev_snap_obj = %llu\n", 775 (u_longlong_t)ds->ds_prev_snap_obj); 776 (void) printf("\t\tprev_snap_txg = %llu\n", 777 (u_longlong_t)ds->ds_prev_snap_txg); 778 (void) printf("\t\tnext_snap_obj = %llu\n", 779 (u_longlong_t)ds->ds_next_snap_obj); 780 (void) printf("\t\tsnapnames_zapobj = %llu\n", 781 (u_longlong_t)ds->ds_snapnames_zapobj); 782 (void) printf("\t\tnum_children = %llu\n", 783 (u_longlong_t)ds->ds_num_children); 784 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 785 (void) printf("\t\tcreation_txg = %llu\n", 786 (u_longlong_t)ds->ds_creation_txg); 787 (void) printf("\t\tdeadlist_obj = %llu\n", 788 (u_longlong_t)ds->ds_deadlist_obj); 789 (void) printf("\t\tused_bytes = %s\n", used); 790 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 791 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 792 (void) printf("\t\tunique = %s\n", unique); 793 (void) printf("\t\tfsid_guid = %llu\n", 794 (u_longlong_t)ds->ds_fsid_guid); 795 (void) printf("\t\tguid = %llu\n", 796 (u_longlong_t)ds->ds_guid); 797 (void) printf("\t\tflags = %llx\n", 798 (u_longlong_t)ds->ds_flags); 799 (void) printf("\t\tbp = %s\n", blkbuf); 800 } 801 802 static void 803 dump_bplist(objset_t *mos, uint64_t object, char *name) 804 { 805 bplist_t bpl = { 0 }; 806 blkptr_t blk, *bp = &blk; 807 uint64_t itor = 0; 808 char bytes[6]; 809 char comp[6]; 810 char uncomp[6]; 811 812 if (dump_opt['d'] < 3) 813 return; 814 815 mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL); 816 VERIFY(0 == bplist_open(&bpl, mos, object)); 817 if (bplist_empty(&bpl)) { 818 bplist_close(&bpl); 819 mutex_destroy(&bpl.bpl_lock); 820 return; 821 } 822 823 nicenum(bpl.bpl_phys->bpl_bytes, bytes); 824 if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) { 825 nicenum(bpl.bpl_phys->bpl_comp, comp); 826 nicenum(bpl.bpl_phys->bpl_uncomp, uncomp); 827 (void) printf("\n %s: %llu entries, %s (%s/%s comp)\n", 828 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, 829 bytes, comp, uncomp); 830 } else { 831 (void) printf("\n %s: %llu entries, %s\n", 832 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes); 833 } 834 835 if (dump_opt['d'] < 5) { 836 bplist_close(&bpl); 837 mutex_destroy(&bpl.bpl_lock); 838 return; 839 } 840 841 (void) printf("\n"); 842 843 while (bplist_iterate(&bpl, &itor, bp) == 0) { 844 char blkbuf[BP_SPRINTF_LEN]; 845 846 ASSERT(bp->blk_birth != 0); 847 sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0); 848 (void) printf("\tItem %3llu: %s\n", 849 (u_longlong_t)itor - 1, blkbuf); 850 } 851 852 bplist_close(&bpl); 853 mutex_destroy(&bpl.bpl_lock); 854 } 855 856 static avl_tree_t idx_tree; 857 static avl_tree_t domain_tree; 858 static boolean_t fuid_table_loaded; 859 860 static void 861 fuid_table_destroy() 862 { 863 if (fuid_table_loaded) { 864 zfs_fuid_table_destroy(&idx_tree, &domain_tree); 865 fuid_table_loaded = B_FALSE; 866 } 867 } 868 869 /* 870 * print uid or gid information. 871 * For normal POSIX id just the id is printed in decimal format. 872 * For CIFS files with FUID the fuid is printed in hex followed by 873 * the doman-rid string. 874 */ 875 static void 876 print_idstr(uint64_t id, const char *id_type) 877 { 878 if (FUID_INDEX(id)) { 879 char *domain; 880 881 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id)); 882 (void) printf("\t%s %llx [%s-%d]\n", id_type, 883 (u_longlong_t)id, domain, (int)FUID_RID(id)); 884 } else { 885 (void) printf("\t%s %llu\n", id_type, (u_longlong_t)id); 886 } 887 888 } 889 890 static void 891 dump_uidgid(objset_t *os, znode_phys_t *zp) 892 { 893 uint32_t uid_idx, gid_idx; 894 895 uid_idx = FUID_INDEX(zp->zp_uid); 896 gid_idx = FUID_INDEX(zp->zp_gid); 897 898 /* Load domain table, if not already loaded */ 899 if (!fuid_table_loaded && (uid_idx || gid_idx)) { 900 uint64_t fuid_obj; 901 902 /* first find the fuid object. It lives in the master node */ 903 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 904 8, 1, &fuid_obj) == 0); 905 (void) zfs_fuid_table_load(os, fuid_obj, 906 &idx_tree, &domain_tree); 907 fuid_table_loaded = B_TRUE; 908 } 909 910 print_idstr(zp->zp_uid, "uid"); 911 print_idstr(zp->zp_gid, "gid"); 912 } 913 914 /*ARGSUSED*/ 915 static void 916 dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 917 { 918 znode_phys_t *zp = data; 919 time_t z_crtime, z_atime, z_mtime, z_ctime; 920 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 921 int error; 922 923 ASSERT(size >= sizeof (znode_phys_t)); 924 925 error = zfs_obj_to_path(os, object, path, sizeof (path)); 926 if (error != 0) { 927 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>", 928 (u_longlong_t)object); 929 } 930 931 if (dump_opt['d'] < 3) { 932 (void) printf("\t%s\n", path); 933 return; 934 } 935 936 z_crtime = (time_t)zp->zp_crtime[0]; 937 z_atime = (time_t)zp->zp_atime[0]; 938 z_mtime = (time_t)zp->zp_mtime[0]; 939 z_ctime = (time_t)zp->zp_ctime[0]; 940 941 (void) printf("\tpath %s\n", path); 942 dump_uidgid(os, zp); 943 (void) printf("\tatime %s", ctime(&z_atime)); 944 (void) printf("\tmtime %s", ctime(&z_mtime)); 945 (void) printf("\tctime %s", ctime(&z_ctime)); 946 (void) printf("\tcrtime %s", ctime(&z_crtime)); 947 (void) printf("\tgen %llu\n", (u_longlong_t)zp->zp_gen); 948 (void) printf("\tmode %llo\n", (u_longlong_t)zp->zp_mode); 949 (void) printf("\tsize %llu\n", (u_longlong_t)zp->zp_size); 950 (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent); 951 (void) printf("\tlinks %llu\n", (u_longlong_t)zp->zp_links); 952 (void) printf("\txattr %llu\n", (u_longlong_t)zp->zp_xattr); 953 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)zp->zp_rdev); 954 } 955 956 /*ARGSUSED*/ 957 static void 958 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 959 { 960 } 961 962 /*ARGSUSED*/ 963 static void 964 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 965 { 966 } 967 968 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = { 969 dump_none, /* unallocated */ 970 dump_zap, /* object directory */ 971 dump_uint64, /* object array */ 972 dump_none, /* packed nvlist */ 973 dump_packed_nvlist, /* packed nvlist size */ 974 dump_none, /* bplist */ 975 dump_none, /* bplist header */ 976 dump_none, /* SPA space map header */ 977 dump_none, /* SPA space map */ 978 dump_none, /* ZIL intent log */ 979 dump_dnode, /* DMU dnode */ 980 dump_dmu_objset, /* DMU objset */ 981 dump_dsl_dir, /* DSL directory */ 982 dump_zap, /* DSL directory child map */ 983 dump_zap, /* DSL dataset snap map */ 984 dump_zap, /* DSL props */ 985 dump_dsl_dataset, /* DSL dataset */ 986 dump_znode, /* ZFS znode */ 987 dump_acl, /* ZFS V0 ACL */ 988 dump_uint8, /* ZFS plain file */ 989 dump_zpldir, /* ZFS directory */ 990 dump_zap, /* ZFS master node */ 991 dump_zap, /* ZFS delete queue */ 992 dump_uint8, /* zvol object */ 993 dump_zap, /* zvol prop */ 994 dump_uint8, /* other uint8[] */ 995 dump_uint64, /* other uint64[] */ 996 dump_zap, /* other ZAP */ 997 dump_zap, /* persistent error log */ 998 dump_uint8, /* SPA history */ 999 dump_uint64, /* SPA history offsets */ 1000 dump_zap, /* Pool properties */ 1001 dump_zap, /* DSL permissions */ 1002 dump_acl, /* ZFS ACL */ 1003 dump_uint8, /* ZFS SYSACL */ 1004 dump_none, /* FUID nvlist */ 1005 dump_packed_nvlist, /* FUID nvlist size */ 1006 }; 1007 1008 static void 1009 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 1010 { 1011 dmu_buf_t *db = NULL; 1012 dmu_object_info_t doi; 1013 dnode_t *dn; 1014 void *bonus = NULL; 1015 size_t bsize = 0; 1016 char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6]; 1017 char aux[50]; 1018 int error; 1019 1020 if (*print_header) { 1021 (void) printf("\n Object lvl iblk dblk lsize" 1022 " asize type\n"); 1023 *print_header = 0; 1024 } 1025 1026 if (object == 0) { 1027 dn = os->os->os_meta_dnode; 1028 } else { 1029 error = dmu_bonus_hold(os, object, FTAG, &db); 1030 if (error) 1031 fatal("dmu_bonus_hold(%llu) failed, errno %u", 1032 object, error); 1033 bonus = db->db_data; 1034 bsize = db->db_size; 1035 dn = ((dmu_buf_impl_t *)db)->db_dnode; 1036 } 1037 dmu_object_info_from_dnode(dn, &doi); 1038 1039 nicenum(doi.doi_metadata_block_size, iblk); 1040 nicenum(doi.doi_data_block_size, dblk); 1041 nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1), 1042 lsize); 1043 nicenum(doi.doi_physical_blks << 9, asize); 1044 nicenum(doi.doi_bonus_size, bonus_size); 1045 1046 aux[0] = '\0'; 1047 1048 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 1049 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 1050 zio_checksum_table[doi.doi_checksum].ci_name); 1051 } 1052 1053 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 1054 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 1055 zio_compress_table[doi.doi_compress].ci_name); 1056 } 1057 1058 (void) printf("%10lld %3u %5s %5s %5s %5s %s%s\n", 1059 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize, 1060 asize, dmu_ot[doi.doi_type].ot_name, aux); 1061 1062 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 1063 (void) printf("%10s %3s %5s %5s %5s %5s %s\n", 1064 "", "", "", "", bonus_size, "bonus", 1065 dmu_ot[doi.doi_bonus_type].ot_name); 1066 } 1067 1068 if (verbosity >= 4) { 1069 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize); 1070 object_viewer[doi.doi_type](os, object, NULL, 0); 1071 *print_header = 1; 1072 } 1073 1074 if (verbosity >= 5) 1075 dump_indirect(os, object, NULL, 0); 1076 1077 if (verbosity >= 5) { 1078 /* 1079 * Report the list of segments that comprise the object. 1080 */ 1081 uint64_t start = 0; 1082 uint64_t end; 1083 uint64_t blkfill = 1; 1084 int minlvl = 1; 1085 1086 if (dn->dn_type == DMU_OT_DNODE) { 1087 minlvl = 0; 1088 blkfill = DNODES_PER_BLOCK; 1089 } 1090 1091 for (;;) { 1092 error = dnode_next_offset(dn, B_FALSE, &start, minlvl, 1093 blkfill, 0); 1094 if (error) 1095 break; 1096 end = start; 1097 error = dnode_next_offset(dn, B_TRUE, &end, minlvl, 1098 blkfill, 0); 1099 nicenum(end - start, segsize); 1100 (void) printf("\t\tsegment [%016llx, %016llx)" 1101 " size %5s\n", (u_longlong_t)start, 1102 (u_longlong_t)end, segsize); 1103 if (error) 1104 break; 1105 start = end; 1106 } 1107 } 1108 1109 if (db != NULL) 1110 dmu_buf_rele(db, FTAG); 1111 } 1112 1113 static char *objset_types[DMU_OST_NUMTYPES] = { 1114 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1115 1116 /*ARGSUSED*/ 1117 static void 1118 dump_dir(objset_t *os) 1119 { 1120 dmu_objset_stats_t dds; 1121 uint64_t object, object_count; 1122 uint64_t refdbytes, usedobjs, scratch; 1123 char numbuf[8]; 1124 char blkbuf[BP_SPRINTF_LEN]; 1125 char osname[MAXNAMELEN]; 1126 char *type = "UNKNOWN"; 1127 int verbosity = dump_opt['d']; 1128 int print_header = 1; 1129 int i, error; 1130 1131 dmu_objset_fast_stat(os, &dds); 1132 1133 if (dds.dds_type < DMU_OST_NUMTYPES) 1134 type = objset_types[dds.dds_type]; 1135 1136 if (dds.dds_type == DMU_OST_META) { 1137 dds.dds_creation_txg = TXG_INITIAL; 1138 usedobjs = os->os->os_rootbp->blk_fill; 1139 refdbytes = 1140 os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes; 1141 } else { 1142 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 1143 } 1144 1145 ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill); 1146 1147 nicenum(refdbytes, numbuf); 1148 1149 if (verbosity >= 4) { 1150 (void) strcpy(blkbuf, ", rootbp "); 1151 sprintf_blkptr(blkbuf + strlen(blkbuf), 1152 BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp); 1153 } else { 1154 blkbuf[0] = '\0'; 1155 } 1156 1157 dmu_objset_name(os, osname); 1158 1159 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 1160 "%s, %llu objects%s\n", 1161 osname, type, (u_longlong_t)dmu_objset_id(os), 1162 (u_longlong_t)dds.dds_creation_txg, 1163 numbuf, (u_longlong_t)usedobjs, blkbuf); 1164 1165 dump_intent_log(dmu_objset_zil(os)); 1166 1167 if (dmu_objset_ds(os) != NULL) 1168 dump_bplist(dmu_objset_pool(os)->dp_meta_objset, 1169 dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist"); 1170 1171 if (verbosity < 2) 1172 return; 1173 1174 if (zopt_objects != 0) { 1175 for (i = 0; i < zopt_objects; i++) 1176 dump_object(os, zopt_object[i], verbosity, 1177 &print_header); 1178 (void) printf("\n"); 1179 return; 1180 } 1181 1182 dump_object(os, 0, verbosity, &print_header); 1183 object_count = 1; 1184 1185 object = 0; 1186 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 1187 dump_object(os, object, verbosity, &print_header); 1188 object_count++; 1189 } 1190 1191 ASSERT3U(object_count, ==, usedobjs); 1192 1193 (void) printf("\n"); 1194 1195 if (error != ESRCH) 1196 fatal("dmu_object_next() = %d", error); 1197 } 1198 1199 static void 1200 dump_uberblock(uberblock_t *ub) 1201 { 1202 time_t timestamp = ub->ub_timestamp; 1203 1204 (void) printf("Uberblock\n\n"); 1205 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 1206 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 1207 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 1208 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 1209 (void) printf("\ttimestamp = %llu UTC = %s", 1210 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 1211 if (dump_opt['u'] >= 3) { 1212 char blkbuf[BP_SPRINTF_LEN]; 1213 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp); 1214 (void) printf("\trootbp = %s\n", blkbuf); 1215 } 1216 (void) printf("\n"); 1217 } 1218 1219 static void 1220 dump_config(const char *pool) 1221 { 1222 spa_t *spa = NULL; 1223 1224 mutex_enter(&spa_namespace_lock); 1225 while ((spa = spa_next(spa)) != NULL) { 1226 if (pool == NULL) 1227 (void) printf("%s\n", spa_name(spa)); 1228 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0) 1229 dump_nvlist(spa->spa_config, 4); 1230 } 1231 mutex_exit(&spa_namespace_lock); 1232 } 1233 1234 static void 1235 dump_label(const char *dev) 1236 { 1237 int fd; 1238 vdev_label_t label; 1239 char *buf = label.vl_vdev_phys.vp_nvlist; 1240 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 1241 struct stat64 statbuf; 1242 uint64_t psize; 1243 int l; 1244 1245 if ((fd = open64(dev, O_RDONLY)) < 0) { 1246 (void) printf("cannot open '%s': %s\n", dev, strerror(errno)); 1247 exit(1); 1248 } 1249 1250 if (fstat64(fd, &statbuf) != 0) { 1251 (void) printf("failed to stat '%s': %s\n", dev, 1252 strerror(errno)); 1253 exit(1); 1254 } 1255 1256 psize = statbuf.st_size; 1257 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 1258 1259 for (l = 0; l < VDEV_LABELS; l++) { 1260 1261 nvlist_t *config = NULL; 1262 1263 (void) printf("--------------------------------------------\n"); 1264 (void) printf("LABEL %d\n", l); 1265 (void) printf("--------------------------------------------\n"); 1266 1267 if (pread64(fd, &label, sizeof (label), 1268 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 1269 (void) printf("failed to read label %d\n", l); 1270 continue; 1271 } 1272 1273 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 1274 (void) printf("failed to unpack label %d\n", l); 1275 continue; 1276 } 1277 dump_nvlist(config, 4); 1278 nvlist_free(config); 1279 } 1280 } 1281 1282 /*ARGSUSED*/ 1283 static int 1284 dump_one_dir(char *dsname, void *arg) 1285 { 1286 int error; 1287 objset_t *os; 1288 1289 error = dmu_objset_open(dsname, DMU_OST_ANY, 1290 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1291 if (error) { 1292 (void) printf("Could not open %s\n", dsname); 1293 return (0); 1294 } 1295 dump_dir(os); 1296 dmu_objset_close(os); 1297 fuid_table_destroy(); 1298 return (0); 1299 } 1300 1301 static void 1302 zdb_space_map_load(spa_t *spa) 1303 { 1304 vdev_t *rvd = spa->spa_root_vdev; 1305 vdev_t *vd; 1306 int c, m, error; 1307 1308 for (c = 0; c < rvd->vdev_children; c++) { 1309 vd = rvd->vdev_child[c]; 1310 for (m = 0; m < vd->vdev_ms_count; m++) { 1311 metaslab_t *msp = vd->vdev_ms[m]; 1312 mutex_enter(&msp->ms_lock); 1313 error = space_map_load(&msp->ms_allocmap[0], NULL, 1314 SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset); 1315 mutex_exit(&msp->ms_lock); 1316 if (error) 1317 fatal("%s bad space map #%d, error %d", 1318 spa->spa_name, c, error); 1319 } 1320 } 1321 } 1322 1323 static int 1324 zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb) 1325 { 1326 dva_t *dva = bp->blk_dva; 1327 vdev_t *vd; 1328 metaslab_t *msp; 1329 space_map_t *allocmap, *freemap; 1330 int error; 1331 int d; 1332 blkptr_t blk = *bp; 1333 1334 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1335 uint64_t vdev = DVA_GET_VDEV(&dva[d]); 1336 uint64_t offset = DVA_GET_OFFSET(&dva[d]); 1337 uint64_t size = DVA_GET_ASIZE(&dva[d]); 1338 1339 if ((vd = vdev_lookup_top(spa, vdev)) == NULL) 1340 return (ENXIO); 1341 1342 if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count) 1343 return (ENXIO); 1344 1345 msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 1346 allocmap = &msp->ms_allocmap[0]; 1347 freemap = &msp->ms_freemap[0]; 1348 1349 /* Prepare our copy of the bp in case we need to read GBHs */ 1350 if (DVA_GET_GANG(&dva[d])) { 1351 size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE); 1352 DVA_SET_ASIZE(&blk.blk_dva[d], size); 1353 DVA_SET_GANG(&blk.blk_dva[d], 0); 1354 } 1355 1356 mutex_enter(&msp->ms_lock); 1357 if (space_map_contains(freemap, offset, size)) { 1358 mutex_exit(&msp->ms_lock); 1359 return (EAGAIN); /* allocated more than once */ 1360 } 1361 1362 if (!space_map_contains(allocmap, offset, size)) { 1363 mutex_exit(&msp->ms_lock); 1364 return (ESTALE); /* not allocated at all */ 1365 } 1366 1367 space_map_remove(allocmap, offset, size); 1368 space_map_add(freemap, offset, size); 1369 1370 mutex_exit(&msp->ms_lock); 1371 } 1372 1373 if (BP_IS_GANG(bp)) { 1374 zio_gbh_phys_t gbh; 1375 int g; 1376 1377 /* LINTED - compile time assert */ 1378 ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE); 1379 1380 BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER); 1381 BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE); 1382 BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE); 1383 BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF); 1384 error = zio_wait(zio_read(NULL, spa, &blk, &gbh, 1385 SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ, 1386 ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb)); 1387 if (error) 1388 return (error); 1389 if (BP_SHOULD_BYTESWAP(&blk)) 1390 byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE); 1391 for (g = 0; g < SPA_GBH_NBLKPTRS; g++) { 1392 if (BP_IS_HOLE(&gbh.zg_blkptr[g])) 1393 break; 1394 error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb); 1395 if (error) 1396 return (error); 1397 } 1398 } 1399 1400 return (0); 1401 } 1402 1403 static void 1404 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size) 1405 { 1406 metaslab_t *msp; 1407 1408 /* LINTED */ 1409 msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0])); 1410 1411 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 1412 (u_longlong_t)msp->ms_group->mg_vd->vdev_id, 1413 (u_longlong_t)start, 1414 (u_longlong_t)size); 1415 } 1416 1417 static void 1418 zdb_space_map_unload(spa_t *spa) 1419 { 1420 vdev_t *rvd = spa->spa_root_vdev; 1421 vdev_t *vd; 1422 int c, m; 1423 1424 for (c = 0; c < rvd->vdev_children; c++) { 1425 vd = rvd->vdev_child[c]; 1426 for (m = 0; m < vd->vdev_ms_count; m++) { 1427 metaslab_t *msp = vd->vdev_ms[m]; 1428 mutex_enter(&msp->ms_lock); 1429 space_map_vacate(&msp->ms_allocmap[0], zdb_leak, 1430 &msp->ms_allocmap[0]); 1431 space_map_unload(&msp->ms_allocmap[0]); 1432 space_map_vacate(&msp->ms_freemap[0], NULL, NULL); 1433 mutex_exit(&msp->ms_lock); 1434 } 1435 } 1436 } 1437 1438 static void 1439 zdb_refresh_ubsync(spa_t *spa) 1440 { 1441 uberblock_t ub = { 0 }; 1442 vdev_t *rvd = spa->spa_root_vdev; 1443 zio_t *zio; 1444 1445 /* 1446 * Reload the uberblock. 1447 */ 1448 zio = zio_root(spa, NULL, NULL, 1449 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); 1450 vdev_uberblock_load(zio, rvd, &ub); 1451 (void) zio_wait(zio); 1452 1453 if (ub.ub_txg != 0) 1454 spa->spa_ubsync = ub; 1455 } 1456 1457 /* 1458 * Verify that the sum of the sizes of all blocks in the pool adds up 1459 * to the SPA's sa_alloc total. 1460 */ 1461 typedef struct zdb_blkstats { 1462 uint64_t zb_asize; 1463 uint64_t zb_lsize; 1464 uint64_t zb_psize; 1465 uint64_t zb_count; 1466 } zdb_blkstats_t; 1467 1468 #define DMU_OT_DEFERRED DMU_OT_NONE 1469 #define DMU_OT_TOTAL DMU_OT_NUMTYPES 1470 1471 #define ZB_TOTAL ZB_MAXLEVEL 1472 1473 typedef struct zdb_cb { 1474 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1]; 1475 uint64_t zcb_errors[256]; 1476 traverse_blk_cache_t *zcb_cache; 1477 int zcb_readfails; 1478 int zcb_haderrors; 1479 } zdb_cb_t; 1480 1481 static void 1482 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type) 1483 { 1484 int i, error; 1485 1486 for (i = 0; i < 4; i++) { 1487 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 1488 int t = (i & 1) ? type : DMU_OT_TOTAL; 1489 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 1490 1491 zb->zb_asize += BP_GET_ASIZE(bp); 1492 zb->zb_lsize += BP_GET_LSIZE(bp); 1493 zb->zb_psize += BP_GET_PSIZE(bp); 1494 zb->zb_count++; 1495 } 1496 1497 if (dump_opt['L']) 1498 return; 1499 1500 error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark); 1501 1502 if (error == 0) 1503 return; 1504 1505 if (error == EAGAIN) 1506 (void) fatal("double-allocation, bp=%p", bp); 1507 1508 if (error == ESTALE) 1509 (void) fatal("reference to freed block, bp=%p", bp); 1510 1511 (void) fatal("fatal error %d in bp %p", error, bp); 1512 } 1513 1514 static int 1515 zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg) 1516 { 1517 zbookmark_t *zb = &bc->bc_bookmark; 1518 zdb_cb_t *zcb = arg; 1519 blkptr_t *bp = &bc->bc_blkptr; 1520 dmu_object_type_t type = BP_GET_TYPE(bp); 1521 char blkbuf[BP_SPRINTF_LEN]; 1522 int error = 0; 1523 1524 if (bc->bc_errno) { 1525 if (zcb->zcb_readfails++ < 10 && dump_opt['L']) { 1526 zdb_refresh_ubsync(spa); 1527 error = EAGAIN; 1528 } else { 1529 zcb->zcb_haderrors = 1; 1530 zcb->zcb_errors[bc->bc_errno]++; 1531 error = ERESTART; 1532 } 1533 1534 if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno)) 1535 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1536 else 1537 blkbuf[0] = '\0'; 1538 1539 (void) printf("zdb_blkptr_cb: Got error %d reading " 1540 "<%llu, %llu, %lld, %llx> %s -- %s\n", 1541 bc->bc_errno, 1542 (u_longlong_t)zb->zb_objset, 1543 (u_longlong_t)zb->zb_object, 1544 (u_longlong_t)zb->zb_level, 1545 (u_longlong_t)zb->zb_blkid, 1546 blkbuf, 1547 error == EAGAIN ? "retrying" : "skipping"); 1548 1549 return (error); 1550 } 1551 1552 zcb->zcb_readfails = 0; 1553 1554 ASSERT(!BP_IS_HOLE(bp)); 1555 1556 if (dump_opt['b'] >= 4) { 1557 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1558 (void) printf("objset %llu object %llu offset 0x%llx %s\n", 1559 (u_longlong_t)zb->zb_objset, 1560 (u_longlong_t)zb->zb_object, 1561 (u_longlong_t)blkid2offset(bc->bc_dnode, 1562 zb->zb_level, zb->zb_blkid), blkbuf); 1563 } 1564 1565 zdb_count_block(spa, zcb, bp, type); 1566 1567 return (0); 1568 } 1569 1570 static int 1571 dump_block_stats(spa_t *spa) 1572 { 1573 traverse_handle_t *th; 1574 zdb_cb_t zcb = { 0 }; 1575 traverse_blk_cache_t dummy_cache = { 0 }; 1576 zdb_blkstats_t *zb, *tzb; 1577 uint64_t alloc, space, logalloc; 1578 vdev_t *rvd = spa->spa_root_vdev; 1579 int leaks = 0; 1580 int advance = zdb_advance; 1581 int c, e, flags; 1582 1583 zcb.zcb_cache = &dummy_cache; 1584 1585 if (dump_opt['c']) 1586 advance |= ADVANCE_DATA; 1587 1588 advance |= ADVANCE_PRUNE | ADVANCE_ZIL; 1589 1590 (void) printf("\nTraversing all blocks to %sverify" 1591 " nothing leaked ...\n", 1592 dump_opt['c'] ? "verify checksums and " : ""); 1593 1594 /* 1595 * Load all space maps. As we traverse the pool, if we find a block 1596 * that's not in its space map, that indicates a double-allocation, 1597 * reference to a freed block, or an unclaimed block. Otherwise we 1598 * remove the block from the space map. If the space maps are not 1599 * empty when we're done, that indicates leaked blocks. 1600 */ 1601 if (!dump_opt['L']) 1602 zdb_space_map_load(spa); 1603 1604 /* 1605 * If there's a deferred-free bplist, process that first. 1606 */ 1607 if (spa->spa_sync_bplist_obj != 0) { 1608 bplist_t *bpl = &spa->spa_sync_bplist; 1609 blkptr_t blk; 1610 uint64_t itor = 0; 1611 1612 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset, 1613 spa->spa_sync_bplist_obj)); 1614 1615 while (bplist_iterate(bpl, &itor, &blk) == 0) { 1616 if (dump_opt['b'] >= 4) { 1617 char blkbuf[BP_SPRINTF_LEN]; 1618 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk); 1619 (void) printf("[%s] %s\n", 1620 "deferred free", blkbuf); 1621 } 1622 zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED); 1623 } 1624 1625 bplist_close(bpl); 1626 } 1627 1628 /* 1629 * Now traverse the pool. If we're reading all data to verify 1630 * checksums, do a scrubbing read so that we validate all copies. 1631 */ 1632 flags = ZIO_FLAG_CANFAIL; 1633 if (advance & ADVANCE_DATA) 1634 flags |= ZIO_FLAG_SCRUB; 1635 th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags); 1636 th->th_noread = zdb_noread; 1637 1638 traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES); 1639 1640 while (traverse_more(th) == EAGAIN) 1641 continue; 1642 1643 traverse_fini(th); 1644 1645 if (zcb.zcb_haderrors) { 1646 (void) printf("\nError counts:\n\n"); 1647 (void) printf("\t%5s %s\n", "errno", "count"); 1648 for (e = 0; e < 256; e++) { 1649 if (zcb.zcb_errors[e] != 0) { 1650 (void) printf("\t%5d %llu\n", 1651 e, (u_longlong_t)zcb.zcb_errors[e]); 1652 } 1653 } 1654 } 1655 1656 /* 1657 * Report any leaked segments. 1658 */ 1659 if (!dump_opt['L']) 1660 zdb_space_map_unload(spa); 1661 1662 if (dump_opt['L']) 1663 (void) printf("\n\n *** Live pool traversal; " 1664 "block counts are only approximate ***\n\n"); 1665 1666 alloc = spa_get_alloc(spa); 1667 space = spa_get_space(spa); 1668 1669 /* 1670 * Log blocks allocated from a separate log device don't count 1671 * as part of the normal pool space; factor them in here. 1672 */ 1673 logalloc = 0; 1674 1675 for (c = 0; c < rvd->vdev_children; c++) 1676 if (rvd->vdev_child[c]->vdev_islog) 1677 logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc; 1678 1679 tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL]; 1680 1681 if (tzb->zb_asize == alloc + logalloc) { 1682 (void) printf("\n\tNo leaks (block sum matches space" 1683 " maps exactly)\n"); 1684 } else { 1685 (void) printf("block traversal size %llu != alloc %llu " 1686 "(leaked %lld)\n", 1687 (u_longlong_t)tzb->zb_asize, 1688 (u_longlong_t)alloc + logalloc, 1689 (u_longlong_t)(alloc + logalloc - tzb->zb_asize)); 1690 leaks = 1; 1691 } 1692 1693 if (tzb->zb_count == 0) 1694 return (2); 1695 1696 (void) printf("\n"); 1697 (void) printf("\tbp count: %10llu\n", 1698 (u_longlong_t)tzb->zb_count); 1699 (void) printf("\tbp logical: %10llu\t avg: %6llu\n", 1700 (u_longlong_t)tzb->zb_lsize, 1701 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 1702 (void) printf("\tbp physical: %10llu\t avg:" 1703 " %6llu\tcompression: %6.2f\n", 1704 (u_longlong_t)tzb->zb_psize, 1705 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 1706 (double)tzb->zb_lsize / tzb->zb_psize); 1707 (void) printf("\tbp allocated: %10llu\t avg:" 1708 " %6llu\tcompression: %6.2f\n", 1709 (u_longlong_t)tzb->zb_asize, 1710 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 1711 (double)tzb->zb_lsize / tzb->zb_asize); 1712 (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n", 1713 (u_longlong_t)alloc, 100.0 * alloc / space); 1714 1715 if (dump_opt['b'] >= 2) { 1716 int l, t, level; 1717 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 1718 "\t avg\t comp\t%%Total\tType\n"); 1719 1720 for (t = 0; t <= DMU_OT_NUMTYPES; t++) { 1721 char csize[6], lsize[6], psize[6], asize[6], avg[6]; 1722 char *typename; 1723 1724 typename = t == DMU_OT_DEFERRED ? "deferred free" : 1725 t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name; 1726 1727 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 1728 (void) printf("%6s\t%5s\t%5s\t%5s" 1729 "\t%5s\t%5s\t%6s\t%s\n", 1730 "-", 1731 "-", 1732 "-", 1733 "-", 1734 "-", 1735 "-", 1736 "-", 1737 typename); 1738 continue; 1739 } 1740 1741 for (l = ZB_TOTAL - 1; l >= -1; l--) { 1742 level = (l == -1 ? ZB_TOTAL : l); 1743 zb = &zcb.zcb_type[level][t]; 1744 1745 if (zb->zb_asize == 0) 1746 continue; 1747 1748 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 1749 continue; 1750 1751 if (level == 0 && zb->zb_asize == 1752 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 1753 continue; 1754 1755 nicenum(zb->zb_count, csize); 1756 nicenum(zb->zb_lsize, lsize); 1757 nicenum(zb->zb_psize, psize); 1758 nicenum(zb->zb_asize, asize); 1759 nicenum(zb->zb_asize / zb->zb_count, avg); 1760 1761 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 1762 "\t%5.2f\t%6.2f\t", 1763 csize, lsize, psize, asize, avg, 1764 (double)zb->zb_lsize / zb->zb_psize, 1765 100.0 * zb->zb_asize / tzb->zb_asize); 1766 1767 if (level == ZB_TOTAL) 1768 (void) printf("%s\n", typename); 1769 else 1770 (void) printf(" L%d %s\n", 1771 level, typename); 1772 } 1773 } 1774 } 1775 1776 (void) printf("\n"); 1777 1778 if (leaks) 1779 return (2); 1780 1781 if (zcb.zcb_haderrors) 1782 return (3); 1783 1784 return (0); 1785 } 1786 1787 static void 1788 dump_zpool(spa_t *spa) 1789 { 1790 dsl_pool_t *dp = spa_get_dsl(spa); 1791 int rc = 0; 1792 1793 spa_config_enter(spa, RW_READER, FTAG); 1794 1795 if (dump_opt['u']) 1796 dump_uberblock(&spa->spa_uberblock); 1797 1798 if (dump_opt['d'] || dump_opt['i']) { 1799 dump_dir(dp->dp_meta_objset); 1800 if (dump_opt['d'] >= 3) { 1801 dump_bplist(dp->dp_meta_objset, 1802 spa->spa_sync_bplist_obj, "Deferred frees"); 1803 dump_dtl(spa->spa_root_vdev, 0); 1804 dump_metaslabs(spa); 1805 } 1806 (void) dmu_objset_find(spa->spa_name, dump_one_dir, NULL, 1807 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 1808 } 1809 1810 if (dump_opt['b'] || dump_opt['c']) 1811 rc = dump_block_stats(spa); 1812 1813 if (dump_opt['s']) 1814 show_pool_stats(spa); 1815 1816 spa_config_exit(spa, FTAG); 1817 1818 if (rc != 0) 1819 exit(rc); 1820 } 1821 1822 #define ZDB_FLAG_CHECKSUM 0x0001 1823 #define ZDB_FLAG_DECOMPRESS 0x0002 1824 #define ZDB_FLAG_BSWAP 0x0004 1825 #define ZDB_FLAG_GBH 0x0008 1826 #define ZDB_FLAG_INDIRECT 0x0010 1827 #define ZDB_FLAG_PHYS 0x0020 1828 #define ZDB_FLAG_RAW 0x0040 1829 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 1830 1831 int flagbits[256]; 1832 1833 static void 1834 zdb_print_blkptr(blkptr_t *bp, int flags) 1835 { 1836 dva_t *dva = bp->blk_dva; 1837 int d; 1838 1839 if (flags & ZDB_FLAG_BSWAP) 1840 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 1841 /* 1842 * Super-ick warning: This code is also duplicated in 1843 * cmd/mdb/common/modules/zfs/zfs.c . Yeah, I hate code 1844 * replication, too. 1845 */ 1846 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1847 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d, 1848 (longlong_t)DVA_GET_VDEV(&dva[d]), 1849 (longlong_t)DVA_GET_OFFSET(&dva[d])); 1850 (void) printf("\tDVA[%d]: GANG: %-5s GRID: %04llx\t" 1851 "ASIZE: %llx\n", d, 1852 DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE", 1853 (longlong_t)DVA_GET_GRID(&dva[d]), 1854 (longlong_t)DVA_GET_ASIZE(&dva[d])); 1855 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d, 1856 (u_longlong_t)DVA_GET_VDEV(&dva[d]), 1857 (longlong_t)DVA_GET_OFFSET(&dva[d]), 1858 (longlong_t)BP_GET_PSIZE(bp), 1859 BP_SHOULD_BYTESWAP(bp) ? "e" : "", 1860 !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ? 1861 "d" : "", 1862 DVA_GET_GANG(&dva[d]) ? "g" : "", 1863 BP_GET_COMPRESS(bp) != 0 ? "d" : ""); 1864 } 1865 (void) printf("\tLSIZE: %-16llx\t\tPSIZE: %llx\n", 1866 (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp)); 1867 (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE: %s\n", 1868 BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG", 1869 dmu_ot[BP_GET_TYPE(bp)].ot_name); 1870 (void) printf("\tBIRTH: %-16llx LEVEL: %-2llu\tFILL: %llx\n", 1871 (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp), 1872 (u_longlong_t)bp->blk_fill); 1873 (void) printf("\tCKFUNC: %-16s\t\tCOMP: %s\n", 1874 zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name, 1875 zio_compress_table[BP_GET_COMPRESS(bp)].ci_name); 1876 (void) printf("\tCKSUM: %llx:%llx:%llx:%llx\n", 1877 (u_longlong_t)bp->blk_cksum.zc_word[0], 1878 (u_longlong_t)bp->blk_cksum.zc_word[1], 1879 (u_longlong_t)bp->blk_cksum.zc_word[2], 1880 (u_longlong_t)bp->blk_cksum.zc_word[3]); 1881 } 1882 1883 static void 1884 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 1885 { 1886 int i; 1887 1888 for (i = 0; i < nbps; i++) 1889 zdb_print_blkptr(&bp[i], flags); 1890 } 1891 1892 static void 1893 zdb_dump_gbh(void *buf, int flags) 1894 { 1895 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 1896 } 1897 1898 static void 1899 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 1900 { 1901 if (flags & ZDB_FLAG_BSWAP) 1902 byteswap_uint64_array(buf, size); 1903 (void) write(2, buf, size); 1904 } 1905 1906 static void 1907 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 1908 { 1909 uint64_t *d = (uint64_t *)buf; 1910 int nwords = size / sizeof (uint64_t); 1911 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 1912 int i, j; 1913 char *hdr, *c; 1914 1915 1916 if (do_bswap) 1917 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 1918 else 1919 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 1920 1921 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 1922 1923 for (i = 0; i < nwords; i += 2) { 1924 (void) printf("%06llx: %016llx %016llx ", 1925 (u_longlong_t)(i * sizeof (uint64_t)), 1926 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 1927 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 1928 1929 c = (char *)&d[i]; 1930 for (j = 0; j < 2 * sizeof (uint64_t); j++) 1931 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 1932 (void) printf("\n"); 1933 } 1934 } 1935 1936 /* 1937 * There are two acceptable formats: 1938 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 1939 * child[.child]* - For example: 0.1.1 1940 * 1941 * The second form can be used to specify arbitrary vdevs anywhere 1942 * in the heirarchy. For example, in a pool with a mirror of 1943 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 1944 */ 1945 static vdev_t * 1946 zdb_vdev_lookup(vdev_t *vdev, char *path) 1947 { 1948 char *s, *p, *q; 1949 int i; 1950 1951 if (vdev == NULL) 1952 return (NULL); 1953 1954 /* First, assume the x.x.x.x format */ 1955 i = (int)strtoul(path, &s, 10); 1956 if (s == path || (s && *s != '.' && *s != '\0')) 1957 goto name; 1958 if (i < 0 || i >= vdev->vdev_children) 1959 return (NULL); 1960 1961 vdev = vdev->vdev_child[i]; 1962 if (*s == '\0') 1963 return (vdev); 1964 return (zdb_vdev_lookup(vdev, s+1)); 1965 1966 name: 1967 for (i = 0; i < vdev->vdev_children; i++) { 1968 vdev_t *vc = vdev->vdev_child[i]; 1969 1970 if (vc->vdev_path == NULL) { 1971 vc = zdb_vdev_lookup(vc, path); 1972 if (vc == NULL) 1973 continue; 1974 else 1975 return (vc); 1976 } 1977 1978 p = strrchr(vc->vdev_path, '/'); 1979 p = p ? p + 1 : vc->vdev_path; 1980 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 1981 1982 if (strcmp(vc->vdev_path, path) == 0) 1983 return (vc); 1984 if (strcmp(p, path) == 0) 1985 return (vc); 1986 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 1987 return (vc); 1988 } 1989 1990 return (NULL); 1991 } 1992 1993 /* 1994 * Read a block from a pool and print it out. The syntax of the 1995 * block descriptor is: 1996 * 1997 * pool:vdev_specifier:offset:size[:flags] 1998 * 1999 * pool - The name of the pool you wish to read from 2000 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 2001 * offset - offset, in hex, in bytes 2002 * size - Amount of data to read, in hex, in bytes 2003 * flags - A string of characters specifying options 2004 * b: Decode a blkptr at given offset within block 2005 * *c: Calculate and display checksums 2006 * *d: Decompress data before dumping 2007 * e: Byteswap data before dumping 2008 * *g: Display data as a gang block header 2009 * *i: Display as an indirect block 2010 * p: Do I/O to physical offset 2011 * r: Dump raw data to stdout 2012 * 2013 * * = not yet implemented 2014 */ 2015 static void 2016 zdb_read_block(char *thing, spa_t **spap) 2017 { 2018 spa_t *spa = *spap; 2019 int flags = 0; 2020 uint64_t offset = 0, size = 0, blkptr_offset = 0; 2021 zio_t *zio; 2022 vdev_t *vd; 2023 void *buf; 2024 char *s, *p, *dup, *spa_name, *vdev, *flagstr; 2025 int i, error, zio_flags; 2026 2027 dup = strdup(thing); 2028 s = strtok(dup, ":"); 2029 spa_name = s ? s : ""; 2030 s = strtok(NULL, ":"); 2031 vdev = s ? s : ""; 2032 s = strtok(NULL, ":"); 2033 offset = strtoull(s ? s : "", NULL, 16); 2034 s = strtok(NULL, ":"); 2035 size = strtoull(s ? s : "", NULL, 16); 2036 s = strtok(NULL, ":"); 2037 flagstr = s ? s : ""; 2038 2039 s = NULL; 2040 if (size == 0) 2041 s = "size must not be zero"; 2042 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 2043 s = "size must be a multiple of sector size"; 2044 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 2045 s = "offset must be a multiple of sector size"; 2046 if (s) { 2047 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 2048 free(dup); 2049 return; 2050 } 2051 2052 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 2053 for (i = 0; flagstr[i]; i++) { 2054 int bit = flagbits[(uchar_t)flagstr[i]]; 2055 2056 if (bit == 0) { 2057 (void) printf("***Invalid flag: %c\n", 2058 flagstr[i]); 2059 continue; 2060 } 2061 flags |= bit; 2062 2063 /* If it's not something with an argument, keep going */ 2064 if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS | 2065 ZDB_FLAG_PRINT_BLKPTR)) == 0) 2066 continue; 2067 2068 p = &flagstr[i + 1]; 2069 if (bit == ZDB_FLAG_PRINT_BLKPTR) 2070 blkptr_offset = strtoull(p, &p, 16); 2071 if (*p != ':' && *p != '\0') { 2072 (void) printf("***Invalid flag arg: '%s'\n", s); 2073 free(dup); 2074 return; 2075 } 2076 } 2077 } 2078 2079 if (spa == NULL || spa->spa_name == NULL || 2080 strcmp(spa->spa_name, spa_name)) { 2081 if (spa && spa->spa_name) 2082 spa_close(spa, (void *)zdb_read_block); 2083 error = spa_open(spa_name, spap, (void *)zdb_read_block); 2084 if (error) 2085 fatal("Failed to open pool '%s': %s", 2086 spa_name, strerror(error)); 2087 spa = *spap; 2088 } 2089 2090 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 2091 if (vd == NULL) { 2092 (void) printf("***Invalid vdev: %s\n", vdev); 2093 free(dup); 2094 return; 2095 } else { 2096 if (vd->vdev_path) 2097 (void) printf("Found vdev: %s\n", vd->vdev_path); 2098 else 2099 (void) printf("Found vdev type: %s\n", 2100 vd->vdev_ops->vdev_op_type); 2101 } 2102 2103 buf = umem_alloc(size, UMEM_NOFAIL); 2104 2105 zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 2106 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK; 2107 2108 if (flags & ZDB_FLAG_PHYS) 2109 zio_flags |= ZIO_FLAG_PHYSICAL; 2110 2111 zio = zio_root(spa, NULL, NULL, 0); 2112 /* XXX todo - cons up a BP so RAID-Z will be happy */ 2113 zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size, 2114 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL)); 2115 error = zio_wait(zio); 2116 2117 if (error) { 2118 (void) printf("Read of %s failed, error: %d\n", thing, error); 2119 goto out; 2120 } 2121 2122 if (flags & ZDB_FLAG_PRINT_BLKPTR) 2123 zdb_print_blkptr((blkptr_t *)(void *) 2124 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 2125 else if (flags & ZDB_FLAG_RAW) 2126 zdb_dump_block_raw(buf, size, flags); 2127 else if (flags & ZDB_FLAG_INDIRECT) 2128 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 2129 flags); 2130 else if (flags & ZDB_FLAG_GBH) 2131 zdb_dump_gbh(buf, flags); 2132 else 2133 zdb_dump_block(thing, buf, size, flags); 2134 2135 out: 2136 umem_free(buf, size); 2137 free(dup); 2138 } 2139 2140 static boolean_t 2141 nvlist_string_match(nvlist_t *config, char *name, char *tgt) 2142 { 2143 char *s; 2144 2145 verify(nvlist_lookup_string(config, name, &s) == 0); 2146 return (strcmp(s, tgt) == 0); 2147 } 2148 2149 static boolean_t 2150 nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt) 2151 { 2152 uint64_t val; 2153 2154 verify(nvlist_lookup_uint64(config, name, &val) == 0); 2155 return (val == tgt); 2156 } 2157 2158 static boolean_t 2159 vdev_child_guid_match(nvlist_t *vdev, uint64_t guid) 2160 { 2161 nvlist_t **child; 2162 uint_t c, children; 2163 2164 verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN, 2165 &child, &children) == 0); 2166 for (c = 0; c < children; ++c) 2167 if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid)) 2168 return (B_TRUE); 2169 return (B_FALSE); 2170 } 2171 2172 static boolean_t 2173 vdev_child_string_match(nvlist_t *vdev, char *tgt) 2174 { 2175 nvlist_t **child; 2176 uint_t c, children; 2177 2178 verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN, 2179 &child, &children) == 0); 2180 for (c = 0; c < children; ++c) { 2181 if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) || 2182 nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt)) 2183 return (B_TRUE); 2184 } 2185 return (B_FALSE); 2186 } 2187 2188 static boolean_t 2189 vdev_guid_match(nvlist_t *config, uint64_t guid) 2190 { 2191 nvlist_t *nvroot; 2192 2193 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2194 &nvroot) == 0); 2195 2196 return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) || 2197 vdev_child_guid_match(nvroot, guid)); 2198 } 2199 2200 static boolean_t 2201 vdev_string_match(nvlist_t *config, char *tgt) 2202 { 2203 nvlist_t *nvroot; 2204 2205 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2206 &nvroot) == 0); 2207 2208 return (vdev_child_string_match(nvroot, tgt)); 2209 } 2210 2211 static boolean_t 2212 pool_match(nvlist_t *config, char *tgt) 2213 { 2214 uint64_t guid = strtoull(tgt, NULL, 0); 2215 2216 if (guid != 0) { 2217 return ( 2218 nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) || 2219 vdev_guid_match(config, guid)); 2220 } else { 2221 return ( 2222 nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) || 2223 vdev_string_match(config, tgt)); 2224 } 2225 } 2226 2227 static int 2228 find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir, 2229 char *cachefile) 2230 { 2231 nvlist_t *pools; 2232 int error = ENOENT; 2233 nvlist_t *match = NULL; 2234 2235 if (vdev_dir != NULL) 2236 pools = zpool_find_import(g_zfs, 1, &vdev_dir, B_TRUE); 2237 else if (cachefile != NULL) 2238 pools = zpool_find_import_cached(g_zfs, cachefile, B_TRUE); 2239 else 2240 pools = zpool_find_import(g_zfs, 0, NULL, B_TRUE); 2241 2242 if (pools != NULL) { 2243 nvpair_t *elem = NULL; 2244 2245 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) { 2246 verify(nvpair_value_nvlist(elem, configp) == 0); 2247 if (pool_match(*configp, pool_id)) { 2248 if (match != NULL) { 2249 (void) fatal( 2250 "More than one matching pool - " 2251 "specify guid/devid/device path."); 2252 } else { 2253 match = *configp; 2254 error = 0; 2255 } 2256 } 2257 } 2258 } 2259 2260 *configp = error ? NULL : match; 2261 2262 return (error); 2263 } 2264 2265 int 2266 main(int argc, char **argv) 2267 { 2268 int i, c; 2269 struct rlimit rl = { 1024, 1024 }; 2270 spa_t *spa; 2271 objset_t *os = NULL; 2272 char *endstr; 2273 int dump_all = 1; 2274 int verbose = 0; 2275 int error; 2276 int flag, set; 2277 int exported = 0; 2278 char *vdev_dir = NULL; 2279 char *cachefile = NULL; 2280 2281 (void) setrlimit(RLIMIT_NOFILE, &rl); 2282 (void) enable_extended_FILE_stdio(-1, -1); 2283 2284 dprintf_setup(&argc, argv); 2285 2286 while ((c = getopt(argc, argv, "udibcsvCLO:B:U:lRep:")) != -1) { 2287 switch (c) { 2288 case 'u': 2289 case 'd': 2290 case 'i': 2291 case 'b': 2292 case 'c': 2293 case 's': 2294 case 'C': 2295 case 'l': 2296 case 'R': 2297 dump_opt[c]++; 2298 dump_all = 0; 2299 break; 2300 case 'L': 2301 dump_opt[c]++; 2302 break; 2303 case 'O': 2304 endstr = optarg; 2305 if (endstr[0] == '!') { 2306 endstr++; 2307 set = 0; 2308 } else { 2309 set = 1; 2310 } 2311 if (strcmp(endstr, "post") == 0) { 2312 flag = ADVANCE_PRE; 2313 set = !set; 2314 } else if (strcmp(endstr, "pre") == 0) { 2315 flag = ADVANCE_PRE; 2316 } else if (strcmp(endstr, "prune") == 0) { 2317 flag = ADVANCE_PRUNE; 2318 } else if (strcmp(endstr, "data") == 0) { 2319 flag = ADVANCE_DATA; 2320 } else if (strcmp(endstr, "holes") == 0) { 2321 flag = ADVANCE_HOLES; 2322 } else { 2323 usage(); 2324 } 2325 if (set) 2326 zdb_advance |= flag; 2327 else 2328 zdb_advance &= ~flag; 2329 break; 2330 case 'B': 2331 endstr = optarg - 1; 2332 zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0); 2333 zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0); 2334 zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0); 2335 zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16); 2336 (void) printf("simulating bad block " 2337 "<%llu, %llu, %lld, %llx>\n", 2338 (u_longlong_t)zdb_noread.zb_objset, 2339 (u_longlong_t)zdb_noread.zb_object, 2340 (u_longlong_t)zdb_noread.zb_level, 2341 (u_longlong_t)zdb_noread.zb_blkid); 2342 break; 2343 case 'v': 2344 verbose++; 2345 break; 2346 case 'U': 2347 cachefile = optarg; 2348 break; 2349 case 'e': 2350 exported = 1; 2351 break; 2352 case 'p': 2353 vdev_dir = optarg; 2354 break; 2355 default: 2356 usage(); 2357 break; 2358 } 2359 } 2360 2361 if (vdev_dir != NULL && exported == 0) 2362 (void) fatal("-p option requires use of -e\n"); 2363 2364 kernel_init(FREAD); 2365 g_zfs = libzfs_init(); 2366 ASSERT(g_zfs != NULL); 2367 2368 /* 2369 * Disable vdev caching. If we don't do this, live pool traversal 2370 * won't make progress because it will never see disk updates. 2371 */ 2372 zfs_vdev_cache_size = 0; 2373 2374 for (c = 0; c < 256; c++) { 2375 if (dump_all && c != 'L' && c != 'l' && c != 'R') 2376 dump_opt[c] = 1; 2377 if (dump_opt[c]) 2378 dump_opt[c] += verbose; 2379 } 2380 2381 argc -= optind; 2382 argv += optind; 2383 2384 if (argc < 1) { 2385 if (dump_opt['C']) { 2386 dump_config(NULL); 2387 return (0); 2388 } 2389 usage(); 2390 } 2391 2392 if (dump_opt['l']) { 2393 dump_label(argv[0]); 2394 return (0); 2395 } 2396 2397 if (dump_opt['R']) { 2398 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 2399 flagbits['c'] = ZDB_FLAG_CHECKSUM; 2400 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 2401 flagbits['e'] = ZDB_FLAG_BSWAP; 2402 flagbits['g'] = ZDB_FLAG_GBH; 2403 flagbits['i'] = ZDB_FLAG_INDIRECT; 2404 flagbits['p'] = ZDB_FLAG_PHYS; 2405 flagbits['r'] = ZDB_FLAG_RAW; 2406 2407 spa = NULL; 2408 while (argv[0]) { 2409 zdb_read_block(argv[0], &spa); 2410 argv++; 2411 argc--; 2412 } 2413 if (spa) 2414 spa_close(spa, (void *)zdb_read_block); 2415 return (0); 2416 } 2417 2418 if (dump_opt['C']) 2419 dump_config(argv[0]); 2420 2421 if (exported == 0 && cachefile == NULL) { 2422 if (strchr(argv[0], '/') != NULL) { 2423 error = dmu_objset_open(argv[0], DMU_OST_ANY, 2424 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 2425 } else { 2426 error = spa_open(argv[0], &spa, FTAG); 2427 } 2428 } else { 2429 /* 2430 * Check to see if the name refers to an exported zpool 2431 */ 2432 nvlist_t *exported_conf = NULL; 2433 2434 error = find_exported_zpool(argv[0], &exported_conf, vdev_dir, 2435 cachefile); 2436 if (error == 0) { 2437 nvlist_t *nvl = NULL; 2438 2439 if (vdev_dir != NULL) { 2440 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 2441 error = ENOMEM; 2442 else if (nvlist_add_string(nvl, 2443 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), 2444 vdev_dir) != 0) 2445 error = ENOMEM; 2446 } 2447 2448 if (error == 0) 2449 error = spa_import(argv[0], exported_conf, nvl); 2450 if (error == 0) 2451 error = spa_open(argv[0], &spa, FTAG); 2452 2453 nvlist_free(nvl); 2454 } 2455 } 2456 2457 if (error) 2458 fatal("can't open %s: %s", argv[0], strerror(error)); 2459 2460 argv++; 2461 if (--argc > 0) { 2462 zopt_objects = argc; 2463 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 2464 for (i = 0; i < zopt_objects; i++) { 2465 errno = 0; 2466 zopt_object[i] = strtoull(argv[i], NULL, 0); 2467 if (zopt_object[i] == 0 && errno != 0) 2468 fatal("bad object number %s: %s", 2469 argv[i], strerror(errno)); 2470 } 2471 } 2472 2473 if (os != NULL) { 2474 dump_dir(os); 2475 dmu_objset_close(os); 2476 } else { 2477 dump_zpool(spa); 2478 spa_close(spa, FTAG); 2479 } 2480 2481 fuid_table_destroy(); 2482 2483 libzfs_fini(g_zfs); 2484 kernel_fini(); 2485 2486 return (0); 2487 } 2488