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 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 25 * Copyright (c) 2014 Integros [integros.com] 26 */ 27 28 #include <stdio.h> 29 #include <unistd.h> 30 #include <stdio_ext.h> 31 #include <stdlib.h> 32 #include <ctype.h> 33 #include <sys/zfs_context.h> 34 #include <sys/spa.h> 35 #include <sys/spa_impl.h> 36 #include <sys/dmu.h> 37 #include <sys/zap.h> 38 #include <sys/fs/zfs.h> 39 #include <sys/zfs_znode.h> 40 #include <sys/zfs_sa.h> 41 #include <sys/sa.h> 42 #include <sys/sa_impl.h> 43 #include <sys/vdev.h> 44 #include <sys/vdev_impl.h> 45 #include <sys/metaslab_impl.h> 46 #include <sys/dmu_objset.h> 47 #include <sys/dsl_dir.h> 48 #include <sys/dsl_dataset.h> 49 #include <sys/dsl_pool.h> 50 #include <sys/dbuf.h> 51 #include <sys/zil.h> 52 #include <sys/zil_impl.h> 53 #include <sys/stat.h> 54 #include <sys/resource.h> 55 #include <sys/dmu_traverse.h> 56 #include <sys/zio_checksum.h> 57 #include <sys/zio_compress.h> 58 #include <sys/zfs_fuid.h> 59 #include <sys/arc.h> 60 #include <sys/ddt.h> 61 #include <sys/zfeature.h> 62 #include <zfs_comutil.h> 63 #undef verify 64 #include <libzfs.h> 65 66 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \ 67 zio_compress_table[(idx)].ci_name : "UNKNOWN") 68 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \ 69 zio_checksum_table[(idx)].ci_name : "UNKNOWN") 70 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \ 71 dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ? \ 72 dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN") 73 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : \ 74 (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \ 75 DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES)) 76 77 #ifndef lint 78 extern boolean_t zfs_recover; 79 extern uint64_t zfs_arc_max, zfs_arc_meta_limit; 80 extern int zfs_vdev_async_read_max_active; 81 #else 82 boolean_t zfs_recover; 83 uint64_t zfs_arc_max, zfs_arc_meta_limit; 84 int zfs_vdev_async_read_max_active; 85 #endif 86 87 const char cmdname[] = "zdb"; 88 uint8_t dump_opt[256]; 89 90 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); 91 92 extern void dump_intent_log(zilog_t *); 93 uint64_t *zopt_object = NULL; 94 int zopt_objects = 0; 95 libzfs_handle_t *g_zfs; 96 uint64_t max_inflight = 1000; 97 98 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *); 99 100 /* 101 * These libumem hooks provide a reasonable set of defaults for the allocator's 102 * debugging facilities. 103 */ 104 const char * 105 _umem_debug_init() 106 { 107 return ("default,verbose"); /* $UMEM_DEBUG setting */ 108 } 109 110 const char * 111 _umem_logging_init(void) 112 { 113 return ("fail,contents"); /* $UMEM_LOGGING setting */ 114 } 115 116 static void 117 usage(void) 118 { 119 (void) fprintf(stderr, 120 "Usage: %s [-CumMdibcsDvhLXFPA] [-t txg] [-e [-p path...]] " 121 "[-U config] [-I inflight I/Os] [-x dumpdir] poolname [object...]\n" 122 " %s [-divPA] [-e -p path...] [-U config] dataset " 123 "[object...]\n" 124 " %s -mM [-LXFPA] [-t txg] [-e [-p path...]] [-U config] " 125 "poolname [vdev [metaslab...]]\n" 126 " %s -R [-A] [-e [-p path...]] poolname " 127 "vdev:offset:size[:flags]\n" 128 " %s -S [-PA] [-e [-p path...]] [-U config] poolname\n" 129 " %s -l [-uA] device\n" 130 " %s -C [-A] [-U config]\n\n", 131 cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname); 132 133 (void) fprintf(stderr, " Dataset name must include at least one " 134 "separator character '/' or '@'\n"); 135 (void) fprintf(stderr, " If dataset name is specified, only that " 136 "dataset is dumped\n"); 137 (void) fprintf(stderr, " If object numbers are specified, only " 138 "those objects are dumped\n\n"); 139 (void) fprintf(stderr, " Options to control amount of output:\n"); 140 (void) fprintf(stderr, " -u uberblock\n"); 141 (void) fprintf(stderr, " -d dataset(s)\n"); 142 (void) fprintf(stderr, " -i intent logs\n"); 143 (void) fprintf(stderr, " -C config (or cachefile if alone)\n"); 144 (void) fprintf(stderr, " -h pool history\n"); 145 (void) fprintf(stderr, " -b block statistics\n"); 146 (void) fprintf(stderr, " -m metaslabs\n"); 147 (void) fprintf(stderr, " -M metaslab groups\n"); 148 (void) fprintf(stderr, " -c checksum all metadata (twice for " 149 "all data) blocks\n"); 150 (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); 151 (void) fprintf(stderr, " -D dedup statistics\n"); 152 (void) fprintf(stderr, " -S simulate dedup to measure effect\n"); 153 (void) fprintf(stderr, " -v verbose (applies to all others)\n"); 154 (void) fprintf(stderr, " -l dump label contents\n"); 155 (void) fprintf(stderr, " -L disable leak tracking (do not " 156 "load spacemaps)\n"); 157 (void) fprintf(stderr, " -R read and display block from a " 158 "device\n\n"); 159 (void) fprintf(stderr, " Below options are intended for use " 160 "with other options:\n"); 161 (void) fprintf(stderr, " -A ignore assertions (-A), enable " 162 "panic recovery (-AA) or both (-AAA)\n"); 163 (void) fprintf(stderr, " -F attempt automatic rewind within " 164 "safe range of transaction groups\n"); 165 (void) fprintf(stderr, " -U <cachefile_path> -- use alternate " 166 "cachefile\n"); 167 (void) fprintf(stderr, " -X attempt extreme rewind (does not " 168 "work with dataset)\n"); 169 (void) fprintf(stderr, " -e pool is exported/destroyed/" 170 "has altroot/not in a cachefile\n"); 171 (void) fprintf(stderr, " -p <path> -- use one or more with " 172 "-e to specify path to vdev dir\n"); 173 (void) fprintf(stderr, " -x <dumpdir> -- " 174 "dump all read blocks into specified directory\n"); 175 (void) fprintf(stderr, " -P print numbers in parseable form\n"); 176 (void) fprintf(stderr, " -t <txg> -- highest txg to use when " 177 "searching for uberblocks\n"); 178 (void) fprintf(stderr, " -I <number of inflight I/Os> -- " 179 "specify the maximum number of " 180 "checksumming I/Os [default is 200]\n"); 181 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " 182 "to make only that option verbose\n"); 183 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); 184 exit(1); 185 } 186 187 /* 188 * Called for usage errors that are discovered after a call to spa_open(), 189 * dmu_bonus_hold(), or pool_match(). abort() is called for other errors. 190 */ 191 192 static void 193 fatal(const char *fmt, ...) 194 { 195 va_list ap; 196 197 va_start(ap, fmt); 198 (void) fprintf(stderr, "%s: ", cmdname); 199 (void) vfprintf(stderr, fmt, ap); 200 va_end(ap); 201 (void) fprintf(stderr, "\n"); 202 203 exit(1); 204 } 205 206 /* ARGSUSED */ 207 static void 208 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) 209 { 210 nvlist_t *nv; 211 size_t nvsize = *(uint64_t *)data; 212 char *packed = umem_alloc(nvsize, UMEM_NOFAIL); 213 214 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH)); 215 216 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); 217 218 umem_free(packed, nvsize); 219 220 dump_nvlist(nv, 8); 221 222 nvlist_free(nv); 223 } 224 225 /* ARGSUSED */ 226 static void 227 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size) 228 { 229 spa_history_phys_t *shp = data; 230 231 if (shp == NULL) 232 return; 233 234 (void) printf("\t\tpool_create_len = %llu\n", 235 (u_longlong_t)shp->sh_pool_create_len); 236 (void) printf("\t\tphys_max_off = %llu\n", 237 (u_longlong_t)shp->sh_phys_max_off); 238 (void) printf("\t\tbof = %llu\n", 239 (u_longlong_t)shp->sh_bof); 240 (void) printf("\t\teof = %llu\n", 241 (u_longlong_t)shp->sh_eof); 242 (void) printf("\t\trecords_lost = %llu\n", 243 (u_longlong_t)shp->sh_records_lost); 244 } 245 246 static void 247 zdb_nicenum(uint64_t num, char *buf) 248 { 249 if (dump_opt['P']) 250 (void) sprintf(buf, "%llu", (longlong_t)num); 251 else 252 nicenum(num, buf); 253 } 254 255 const char histo_stars[] = "****************************************"; 256 const int histo_width = sizeof (histo_stars) - 1; 257 258 static void 259 dump_histogram(const uint64_t *histo, int size, int offset) 260 { 261 int i; 262 int minidx = size - 1; 263 int maxidx = 0; 264 uint64_t max = 0; 265 266 for (i = 0; i < size; i++) { 267 if (histo[i] > max) 268 max = histo[i]; 269 if (histo[i] > 0 && i > maxidx) 270 maxidx = i; 271 if (histo[i] > 0 && i < minidx) 272 minidx = i; 273 } 274 275 if (max < histo_width) 276 max = histo_width; 277 278 for (i = minidx; i <= maxidx; i++) { 279 (void) printf("\t\t\t%3u: %6llu %s\n", 280 i + offset, (u_longlong_t)histo[i], 281 &histo_stars[(max - histo[i]) * histo_width / max]); 282 } 283 } 284 285 static void 286 dump_zap_stats(objset_t *os, uint64_t object) 287 { 288 int error; 289 zap_stats_t zs; 290 291 error = zap_get_stats(os, object, &zs); 292 if (error) 293 return; 294 295 if (zs.zs_ptrtbl_len == 0) { 296 ASSERT(zs.zs_num_blocks == 1); 297 (void) printf("\tmicrozap: %llu bytes, %llu entries\n", 298 (u_longlong_t)zs.zs_blocksize, 299 (u_longlong_t)zs.zs_num_entries); 300 return; 301 } 302 303 (void) printf("\tFat ZAP stats:\n"); 304 305 (void) printf("\t\tPointer table:\n"); 306 (void) printf("\t\t\t%llu elements\n", 307 (u_longlong_t)zs.zs_ptrtbl_len); 308 (void) printf("\t\t\tzt_blk: %llu\n", 309 (u_longlong_t)zs.zs_ptrtbl_zt_blk); 310 (void) printf("\t\t\tzt_numblks: %llu\n", 311 (u_longlong_t)zs.zs_ptrtbl_zt_numblks); 312 (void) printf("\t\t\tzt_shift: %llu\n", 313 (u_longlong_t)zs.zs_ptrtbl_zt_shift); 314 (void) printf("\t\t\tzt_blks_copied: %llu\n", 315 (u_longlong_t)zs.zs_ptrtbl_blks_copied); 316 (void) printf("\t\t\tzt_nextblk: %llu\n", 317 (u_longlong_t)zs.zs_ptrtbl_nextblk); 318 319 (void) printf("\t\tZAP entries: %llu\n", 320 (u_longlong_t)zs.zs_num_entries); 321 (void) printf("\t\tLeaf blocks: %llu\n", 322 (u_longlong_t)zs.zs_num_leafs); 323 (void) printf("\t\tTotal blocks: %llu\n", 324 (u_longlong_t)zs.zs_num_blocks); 325 (void) printf("\t\tzap_block_type: 0x%llx\n", 326 (u_longlong_t)zs.zs_block_type); 327 (void) printf("\t\tzap_magic: 0x%llx\n", 328 (u_longlong_t)zs.zs_magic); 329 (void) printf("\t\tzap_salt: 0x%llx\n", 330 (u_longlong_t)zs.zs_salt); 331 332 (void) printf("\t\tLeafs with 2^n pointers:\n"); 333 dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0); 334 335 (void) printf("\t\tBlocks with n*5 entries:\n"); 336 dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0); 337 338 (void) printf("\t\tBlocks n/10 full:\n"); 339 dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0); 340 341 (void) printf("\t\tEntries with n chunks:\n"); 342 dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0); 343 344 (void) printf("\t\tBuckets with n entries:\n"); 345 dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0); 346 } 347 348 /*ARGSUSED*/ 349 static void 350 dump_none(objset_t *os, uint64_t object, void *data, size_t size) 351 { 352 } 353 354 /*ARGSUSED*/ 355 static void 356 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size) 357 { 358 (void) printf("\tUNKNOWN OBJECT TYPE\n"); 359 } 360 361 /*ARGSUSED*/ 362 void 363 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) 364 { 365 } 366 367 /*ARGSUSED*/ 368 static void 369 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) 370 { 371 } 372 373 /*ARGSUSED*/ 374 static void 375 dump_zap(objset_t *os, uint64_t object, void *data, size_t size) 376 { 377 zap_cursor_t zc; 378 zap_attribute_t attr; 379 void *prop; 380 int i; 381 382 dump_zap_stats(os, object); 383 (void) printf("\n"); 384 385 for (zap_cursor_init(&zc, os, object); 386 zap_cursor_retrieve(&zc, &attr) == 0; 387 zap_cursor_advance(&zc)) { 388 (void) printf("\t\t%s = ", attr.za_name); 389 if (attr.za_num_integers == 0) { 390 (void) printf("\n"); 391 continue; 392 } 393 prop = umem_zalloc(attr.za_num_integers * 394 attr.za_integer_length, UMEM_NOFAIL); 395 (void) zap_lookup(os, object, attr.za_name, 396 attr.za_integer_length, attr.za_num_integers, prop); 397 if (attr.za_integer_length == 1) { 398 (void) printf("%s", (char *)prop); 399 } else { 400 for (i = 0; i < attr.za_num_integers; i++) { 401 switch (attr.za_integer_length) { 402 case 2: 403 (void) printf("%u ", 404 ((uint16_t *)prop)[i]); 405 break; 406 case 4: 407 (void) printf("%u ", 408 ((uint32_t *)prop)[i]); 409 break; 410 case 8: 411 (void) printf("%lld ", 412 (u_longlong_t)((int64_t *)prop)[i]); 413 break; 414 } 415 } 416 } 417 (void) printf("\n"); 418 umem_free(prop, attr.za_num_integers * attr.za_integer_length); 419 } 420 zap_cursor_fini(&zc); 421 } 422 423 static void 424 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size) 425 { 426 bpobj_phys_t *bpop = data; 427 char bytes[32], comp[32], uncomp[32]; 428 429 if (bpop == NULL) 430 return; 431 432 zdb_nicenum(bpop->bpo_bytes, bytes); 433 zdb_nicenum(bpop->bpo_comp, comp); 434 zdb_nicenum(bpop->bpo_uncomp, uncomp); 435 436 (void) printf("\t\tnum_blkptrs = %llu\n", 437 (u_longlong_t)bpop->bpo_num_blkptrs); 438 (void) printf("\t\tbytes = %s\n", bytes); 439 if (size >= BPOBJ_SIZE_V1) { 440 (void) printf("\t\tcomp = %s\n", comp); 441 (void) printf("\t\tuncomp = %s\n", uncomp); 442 } 443 if (size >= sizeof (*bpop)) { 444 (void) printf("\t\tsubobjs = %llu\n", 445 (u_longlong_t)bpop->bpo_subobjs); 446 (void) printf("\t\tnum_subobjs = %llu\n", 447 (u_longlong_t)bpop->bpo_num_subobjs); 448 } 449 450 if (dump_opt['d'] < 5) 451 return; 452 453 for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) { 454 char blkbuf[BP_SPRINTF_LEN]; 455 blkptr_t bp; 456 457 int err = dmu_read(os, object, 458 i * sizeof (bp), sizeof (bp), &bp, 0); 459 if (err != 0) { 460 (void) printf("got error %u from dmu_read\n", err); 461 break; 462 } 463 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp); 464 (void) printf("\t%s\n", blkbuf); 465 } 466 } 467 468 /* ARGSUSED */ 469 static void 470 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size) 471 { 472 dmu_object_info_t doi; 473 474 VERIFY0(dmu_object_info(os, object, &doi)); 475 uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP); 476 477 int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0); 478 if (err != 0) { 479 (void) printf("got error %u from dmu_read\n", err); 480 kmem_free(subobjs, doi.doi_max_offset); 481 return; 482 } 483 484 int64_t last_nonzero = -1; 485 for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) { 486 if (subobjs[i] != 0) 487 last_nonzero = i; 488 } 489 490 for (int64_t i = 0; i <= last_nonzero; i++) { 491 (void) printf("\t%llu\n", (longlong_t)subobjs[i]); 492 } 493 kmem_free(subobjs, doi.doi_max_offset); 494 } 495 496 /*ARGSUSED*/ 497 static void 498 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size) 499 { 500 dump_zap_stats(os, object); 501 /* contents are printed elsewhere, properly decoded */ 502 } 503 504 /*ARGSUSED*/ 505 static void 506 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size) 507 { 508 zap_cursor_t zc; 509 zap_attribute_t attr; 510 511 dump_zap_stats(os, object); 512 (void) printf("\n"); 513 514 for (zap_cursor_init(&zc, os, object); 515 zap_cursor_retrieve(&zc, &attr) == 0; 516 zap_cursor_advance(&zc)) { 517 (void) printf("\t\t%s = ", attr.za_name); 518 if (attr.za_num_integers == 0) { 519 (void) printf("\n"); 520 continue; 521 } 522 (void) printf(" %llx : [%d:%d:%d]\n", 523 (u_longlong_t)attr.za_first_integer, 524 (int)ATTR_LENGTH(attr.za_first_integer), 525 (int)ATTR_BSWAP(attr.za_first_integer), 526 (int)ATTR_NUM(attr.za_first_integer)); 527 } 528 zap_cursor_fini(&zc); 529 } 530 531 /*ARGSUSED*/ 532 static void 533 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size) 534 { 535 zap_cursor_t zc; 536 zap_attribute_t attr; 537 uint16_t *layout_attrs; 538 int i; 539 540 dump_zap_stats(os, object); 541 (void) printf("\n"); 542 543 for (zap_cursor_init(&zc, os, object); 544 zap_cursor_retrieve(&zc, &attr) == 0; 545 zap_cursor_advance(&zc)) { 546 (void) printf("\t\t%s = [", attr.za_name); 547 if (attr.za_num_integers == 0) { 548 (void) printf("\n"); 549 continue; 550 } 551 552 VERIFY(attr.za_integer_length == 2); 553 layout_attrs = umem_zalloc(attr.za_num_integers * 554 attr.za_integer_length, UMEM_NOFAIL); 555 556 VERIFY(zap_lookup(os, object, attr.za_name, 557 attr.za_integer_length, 558 attr.za_num_integers, layout_attrs) == 0); 559 560 for (i = 0; i != attr.za_num_integers; i++) 561 (void) printf(" %d ", (int)layout_attrs[i]); 562 (void) printf("]\n"); 563 umem_free(layout_attrs, 564 attr.za_num_integers * attr.za_integer_length); 565 } 566 zap_cursor_fini(&zc); 567 } 568 569 /*ARGSUSED*/ 570 static void 571 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size) 572 { 573 zap_cursor_t zc; 574 zap_attribute_t attr; 575 const char *typenames[] = { 576 /* 0 */ "not specified", 577 /* 1 */ "FIFO", 578 /* 2 */ "Character Device", 579 /* 3 */ "3 (invalid)", 580 /* 4 */ "Directory", 581 /* 5 */ "5 (invalid)", 582 /* 6 */ "Block Device", 583 /* 7 */ "7 (invalid)", 584 /* 8 */ "Regular File", 585 /* 9 */ "9 (invalid)", 586 /* 10 */ "Symbolic Link", 587 /* 11 */ "11 (invalid)", 588 /* 12 */ "Socket", 589 /* 13 */ "Door", 590 /* 14 */ "Event Port", 591 /* 15 */ "15 (invalid)", 592 }; 593 594 dump_zap_stats(os, object); 595 (void) printf("\n"); 596 597 for (zap_cursor_init(&zc, os, object); 598 zap_cursor_retrieve(&zc, &attr) == 0; 599 zap_cursor_advance(&zc)) { 600 (void) printf("\t\t%s = %lld (type: %s)\n", 601 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer), 602 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]); 603 } 604 zap_cursor_fini(&zc); 605 } 606 607 int 608 get_dtl_refcount(vdev_t *vd) 609 { 610 int refcount = 0; 611 612 if (vd->vdev_ops->vdev_op_leaf) { 613 space_map_t *sm = vd->vdev_dtl_sm; 614 615 if (sm != NULL && 616 sm->sm_dbuf->db_size == sizeof (space_map_phys_t)) 617 return (1); 618 return (0); 619 } 620 621 for (int c = 0; c < vd->vdev_children; c++) 622 refcount += get_dtl_refcount(vd->vdev_child[c]); 623 return (refcount); 624 } 625 626 int 627 get_metaslab_refcount(vdev_t *vd) 628 { 629 int refcount = 0; 630 631 if (vd->vdev_top == vd && !vd->vdev_removing) { 632 for (int m = 0; m < vd->vdev_ms_count; m++) { 633 space_map_t *sm = vd->vdev_ms[m]->ms_sm; 634 635 if (sm != NULL && 636 sm->sm_dbuf->db_size == sizeof (space_map_phys_t)) 637 refcount++; 638 } 639 } 640 for (int c = 0; c < vd->vdev_children; c++) 641 refcount += get_metaslab_refcount(vd->vdev_child[c]); 642 643 return (refcount); 644 } 645 646 static int 647 verify_spacemap_refcounts(spa_t *spa) 648 { 649 uint64_t expected_refcount = 0; 650 uint64_t actual_refcount; 651 652 (void) feature_get_refcount(spa, 653 &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM], 654 &expected_refcount); 655 actual_refcount = get_dtl_refcount(spa->spa_root_vdev); 656 actual_refcount += get_metaslab_refcount(spa->spa_root_vdev); 657 658 if (expected_refcount != actual_refcount) { 659 (void) printf("space map refcount mismatch: expected %lld != " 660 "actual %lld\n", 661 (longlong_t)expected_refcount, 662 (longlong_t)actual_refcount); 663 return (2); 664 } 665 return (0); 666 } 667 668 static void 669 dump_spacemap(objset_t *os, space_map_t *sm) 670 { 671 uint64_t alloc, offset, entry; 672 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID", 673 "INVALID", "INVALID", "INVALID", "INVALID" }; 674 675 if (sm == NULL) 676 return; 677 678 /* 679 * Print out the freelist entries in both encoded and decoded form. 680 */ 681 alloc = 0; 682 for (offset = 0; offset < space_map_length(sm); 683 offset += sizeof (entry)) { 684 uint8_t mapshift = sm->sm_shift; 685 686 VERIFY0(dmu_read(os, space_map_object(sm), offset, 687 sizeof (entry), &entry, DMU_READ_PREFETCH)); 688 if (SM_DEBUG_DECODE(entry)) { 689 690 (void) printf("\t [%6llu] %s: txg %llu, pass %llu\n", 691 (u_longlong_t)(offset / sizeof (entry)), 692 ddata[SM_DEBUG_ACTION_DECODE(entry)], 693 (u_longlong_t)SM_DEBUG_TXG_DECODE(entry), 694 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry)); 695 } else { 696 (void) printf("\t [%6llu] %c range:" 697 " %010llx-%010llx size: %06llx\n", 698 (u_longlong_t)(offset / sizeof (entry)), 699 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 700 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 701 mapshift) + sm->sm_start), 702 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 703 mapshift) + sm->sm_start + 704 (SM_RUN_DECODE(entry) << mapshift)), 705 (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift)); 706 if (SM_TYPE_DECODE(entry) == SM_ALLOC) 707 alloc += SM_RUN_DECODE(entry) << mapshift; 708 else 709 alloc -= SM_RUN_DECODE(entry) << mapshift; 710 } 711 } 712 if (alloc != space_map_allocated(sm)) { 713 (void) printf("space_map_object alloc (%llu) INCONSISTENT " 714 "with space map summary (%llu)\n", 715 (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc); 716 } 717 } 718 719 static void 720 dump_metaslab_stats(metaslab_t *msp) 721 { 722 char maxbuf[32]; 723 range_tree_t *rt = msp->ms_tree; 724 avl_tree_t *t = &msp->ms_size_tree; 725 int free_pct = range_tree_space(rt) * 100 / msp->ms_size; 726 727 zdb_nicenum(metaslab_block_maxsize(msp), maxbuf); 728 729 (void) printf("\t %25s %10lu %7s %6s %4s %4d%%\n", 730 "segments", avl_numnodes(t), "maxsize", maxbuf, 731 "freepct", free_pct); 732 (void) printf("\tIn-memory histogram:\n"); 733 dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 734 } 735 736 static void 737 dump_metaslab(metaslab_t *msp) 738 { 739 vdev_t *vd = msp->ms_group->mg_vd; 740 spa_t *spa = vd->vdev_spa; 741 space_map_t *sm = msp->ms_sm; 742 char freebuf[32]; 743 744 zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf); 745 746 (void) printf( 747 "\tmetaslab %6llu offset %12llx spacemap %6llu free %5s\n", 748 (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start, 749 (u_longlong_t)space_map_object(sm), freebuf); 750 751 if (dump_opt['m'] > 2 && !dump_opt['L']) { 752 mutex_enter(&msp->ms_lock); 753 metaslab_load_wait(msp); 754 if (!msp->ms_loaded) { 755 VERIFY0(metaslab_load(msp)); 756 range_tree_stat_verify(msp->ms_tree); 757 } 758 dump_metaslab_stats(msp); 759 metaslab_unload(msp); 760 mutex_exit(&msp->ms_lock); 761 } 762 763 if (dump_opt['m'] > 1 && sm != NULL && 764 spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) { 765 /* 766 * The space map histogram represents free space in chunks 767 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift). 768 */ 769 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n", 770 (u_longlong_t)msp->ms_fragmentation); 771 dump_histogram(sm->sm_phys->smp_histogram, 772 SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift); 773 } 774 775 if (dump_opt['d'] > 5 || dump_opt['m'] > 3) { 776 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift)); 777 778 mutex_enter(&msp->ms_lock); 779 dump_spacemap(spa->spa_meta_objset, msp->ms_sm); 780 mutex_exit(&msp->ms_lock); 781 } 782 } 783 784 static void 785 print_vdev_metaslab_header(vdev_t *vd) 786 { 787 (void) printf("\tvdev %10llu\n\t%-10s%5llu %-19s %-15s %-10s\n", 788 (u_longlong_t)vd->vdev_id, 789 "metaslabs", (u_longlong_t)vd->vdev_ms_count, 790 "offset", "spacemap", "free"); 791 (void) printf("\t%15s %19s %15s %10s\n", 792 "---------------", "-------------------", 793 "---------------", "-------------"); 794 } 795 796 static void 797 dump_metaslab_groups(spa_t *spa) 798 { 799 vdev_t *rvd = spa->spa_root_vdev; 800 metaslab_class_t *mc = spa_normal_class(spa); 801 uint64_t fragmentation; 802 803 metaslab_class_histogram_verify(mc); 804 805 for (int c = 0; c < rvd->vdev_children; c++) { 806 vdev_t *tvd = rvd->vdev_child[c]; 807 metaslab_group_t *mg = tvd->vdev_mg; 808 809 if (mg->mg_class != mc) 810 continue; 811 812 metaslab_group_histogram_verify(mg); 813 mg->mg_fragmentation = metaslab_group_fragmentation(mg); 814 815 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t" 816 "fragmentation", 817 (u_longlong_t)tvd->vdev_id, 818 (u_longlong_t)tvd->vdev_ms_count); 819 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) { 820 (void) printf("%3s\n", "-"); 821 } else { 822 (void) printf("%3llu%%\n", 823 (u_longlong_t)mg->mg_fragmentation); 824 } 825 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 826 } 827 828 (void) printf("\tpool %s\tfragmentation", spa_name(spa)); 829 fragmentation = metaslab_class_fragmentation(mc); 830 if (fragmentation == ZFS_FRAG_INVALID) 831 (void) printf("\t%3s\n", "-"); 832 else 833 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation); 834 dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 835 } 836 837 static void 838 dump_metaslabs(spa_t *spa) 839 { 840 vdev_t *vd, *rvd = spa->spa_root_vdev; 841 uint64_t m, c = 0, children = rvd->vdev_children; 842 843 (void) printf("\nMetaslabs:\n"); 844 845 if (!dump_opt['d'] && zopt_objects > 0) { 846 c = zopt_object[0]; 847 848 if (c >= children) 849 (void) fatal("bad vdev id: %llu", (u_longlong_t)c); 850 851 if (zopt_objects > 1) { 852 vd = rvd->vdev_child[c]; 853 print_vdev_metaslab_header(vd); 854 855 for (m = 1; m < zopt_objects; m++) { 856 if (zopt_object[m] < vd->vdev_ms_count) 857 dump_metaslab( 858 vd->vdev_ms[zopt_object[m]]); 859 else 860 (void) fprintf(stderr, "bad metaslab " 861 "number %llu\n", 862 (u_longlong_t)zopt_object[m]); 863 } 864 (void) printf("\n"); 865 return; 866 } 867 children = c + 1; 868 } 869 for (; c < children; c++) { 870 vd = rvd->vdev_child[c]; 871 print_vdev_metaslab_header(vd); 872 873 for (m = 0; m < vd->vdev_ms_count; m++) 874 dump_metaslab(vd->vdev_ms[m]); 875 (void) printf("\n"); 876 } 877 } 878 879 static void 880 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index) 881 { 882 const ddt_phys_t *ddp = dde->dde_phys; 883 const ddt_key_t *ddk = &dde->dde_key; 884 char *types[4] = { "ditto", "single", "double", "triple" }; 885 char blkbuf[BP_SPRINTF_LEN]; 886 blkptr_t blk; 887 888 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 889 if (ddp->ddp_phys_birth == 0) 890 continue; 891 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk); 892 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk); 893 (void) printf("index %llx refcnt %llu %s %s\n", 894 (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt, 895 types[p], blkbuf); 896 } 897 } 898 899 static void 900 dump_dedup_ratio(const ddt_stat_t *dds) 901 { 902 double rL, rP, rD, D, dedup, compress, copies; 903 904 if (dds->dds_blocks == 0) 905 return; 906 907 rL = (double)dds->dds_ref_lsize; 908 rP = (double)dds->dds_ref_psize; 909 rD = (double)dds->dds_ref_dsize; 910 D = (double)dds->dds_dsize; 911 912 dedup = rD / D; 913 compress = rL / rP; 914 copies = rD / rP; 915 916 (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, " 917 "dedup * compress / copies = %.2f\n\n", 918 dedup, compress, copies, dedup * compress / copies); 919 } 920 921 static void 922 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class) 923 { 924 char name[DDT_NAMELEN]; 925 ddt_entry_t dde; 926 uint64_t walk = 0; 927 dmu_object_info_t doi; 928 uint64_t count, dspace, mspace; 929 int error; 930 931 error = ddt_object_info(ddt, type, class, &doi); 932 933 if (error == ENOENT) 934 return; 935 ASSERT(error == 0); 936 937 if ((count = ddt_object_count(ddt, type, class)) == 0) 938 return; 939 940 dspace = doi.doi_physical_blocks_512 << 9; 941 mspace = doi.doi_fill_count * doi.doi_data_block_size; 942 943 ddt_object_name(ddt, type, class, name); 944 945 (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n", 946 name, 947 (u_longlong_t)count, 948 (u_longlong_t)(dspace / count), 949 (u_longlong_t)(mspace / count)); 950 951 if (dump_opt['D'] < 3) 952 return; 953 954 zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]); 955 956 if (dump_opt['D'] < 4) 957 return; 958 959 if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE) 960 return; 961 962 (void) printf("%s contents:\n\n", name); 963 964 while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0) 965 dump_dde(ddt, &dde, walk); 966 967 ASSERT(error == ENOENT); 968 969 (void) printf("\n"); 970 } 971 972 static void 973 dump_all_ddts(spa_t *spa) 974 { 975 ddt_histogram_t ddh_total = { 0 }; 976 ddt_stat_t dds_total = { 0 }; 977 978 for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { 979 ddt_t *ddt = spa->spa_ddt[c]; 980 for (enum ddt_type type = 0; type < DDT_TYPES; type++) { 981 for (enum ddt_class class = 0; class < DDT_CLASSES; 982 class++) { 983 dump_ddt(ddt, type, class); 984 } 985 } 986 } 987 988 ddt_get_dedup_stats(spa, &dds_total); 989 990 if (dds_total.dds_blocks == 0) { 991 (void) printf("All DDTs are empty\n"); 992 return; 993 } 994 995 (void) printf("\n"); 996 997 if (dump_opt['D'] > 1) { 998 (void) printf("DDT histogram (aggregated over all DDTs):\n"); 999 ddt_get_dedup_histogram(spa, &ddh_total); 1000 zpool_dump_ddt(&dds_total, &ddh_total); 1001 } 1002 1003 dump_dedup_ratio(&dds_total); 1004 } 1005 1006 static void 1007 dump_dtl_seg(void *arg, uint64_t start, uint64_t size) 1008 { 1009 char *prefix = arg; 1010 1011 (void) printf("%s [%llu,%llu) length %llu\n", 1012 prefix, 1013 (u_longlong_t)start, 1014 (u_longlong_t)(start + size), 1015 (u_longlong_t)(size)); 1016 } 1017 1018 static void 1019 dump_dtl(vdev_t *vd, int indent) 1020 { 1021 spa_t *spa = vd->vdev_spa; 1022 boolean_t required; 1023 char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" }; 1024 char prefix[256]; 1025 1026 spa_vdev_state_enter(spa, SCL_NONE); 1027 required = vdev_dtl_required(vd); 1028 (void) spa_vdev_state_exit(spa, NULL, 0); 1029 1030 if (indent == 0) 1031 (void) printf("\nDirty time logs:\n\n"); 1032 1033 (void) printf("\t%*s%s [%s]\n", indent, "", 1034 vd->vdev_path ? vd->vdev_path : 1035 vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa), 1036 required ? "DTL-required" : "DTL-expendable"); 1037 1038 for (int t = 0; t < DTL_TYPES; t++) { 1039 range_tree_t *rt = vd->vdev_dtl[t]; 1040 if (range_tree_space(rt) == 0) 1041 continue; 1042 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s", 1043 indent + 2, "", name[t]); 1044 mutex_enter(rt->rt_lock); 1045 range_tree_walk(rt, dump_dtl_seg, prefix); 1046 mutex_exit(rt->rt_lock); 1047 if (dump_opt['d'] > 5 && vd->vdev_children == 0) 1048 dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm); 1049 } 1050 1051 for (int c = 0; c < vd->vdev_children; c++) 1052 dump_dtl(vd->vdev_child[c], indent + 4); 1053 } 1054 1055 static void 1056 dump_history(spa_t *spa) 1057 { 1058 nvlist_t **events = NULL; 1059 uint64_t resid, len, off = 0; 1060 uint_t num = 0; 1061 int error; 1062 time_t tsec; 1063 struct tm t; 1064 char tbuf[30]; 1065 char internalstr[MAXPATHLEN]; 1066 1067 char *buf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 1068 do { 1069 len = SPA_MAXBLOCKSIZE; 1070 1071 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) { 1072 (void) fprintf(stderr, "Unable to read history: " 1073 "error %d\n", error); 1074 umem_free(buf, SPA_MAXBLOCKSIZE); 1075 return; 1076 } 1077 1078 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0) 1079 break; 1080 1081 off -= resid; 1082 } while (len != 0); 1083 umem_free(buf, SPA_MAXBLOCKSIZE); 1084 1085 (void) printf("\nHistory:\n"); 1086 for (int i = 0; i < num; i++) { 1087 uint64_t time, txg, ievent; 1088 char *cmd, *intstr; 1089 boolean_t printed = B_FALSE; 1090 1091 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME, 1092 &time) != 0) 1093 goto next; 1094 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD, 1095 &cmd) != 0) { 1096 if (nvlist_lookup_uint64(events[i], 1097 ZPOOL_HIST_INT_EVENT, &ievent) != 0) 1098 goto next; 1099 verify(nvlist_lookup_uint64(events[i], 1100 ZPOOL_HIST_TXG, &txg) == 0); 1101 verify(nvlist_lookup_string(events[i], 1102 ZPOOL_HIST_INT_STR, &intstr) == 0); 1103 if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS) 1104 goto next; 1105 1106 (void) snprintf(internalstr, 1107 sizeof (internalstr), 1108 "[internal %s txg:%lld] %s", 1109 zfs_history_event_names[ievent], txg, 1110 intstr); 1111 cmd = internalstr; 1112 } 1113 tsec = time; 1114 (void) localtime_r(&tsec, &t); 1115 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t); 1116 (void) printf("%s %s\n", tbuf, cmd); 1117 printed = B_TRUE; 1118 1119 next: 1120 if (dump_opt['h'] > 1) { 1121 if (!printed) 1122 (void) printf("unrecognized record:\n"); 1123 dump_nvlist(events[i], 2); 1124 } 1125 } 1126 } 1127 1128 /*ARGSUSED*/ 1129 static void 1130 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 1131 { 1132 } 1133 1134 static uint64_t 1135 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, 1136 const zbookmark_phys_t *zb) 1137 { 1138 if (dnp == NULL) { 1139 ASSERT(zb->zb_level < 0); 1140 if (zb->zb_object == 0) 1141 return (zb->zb_blkid); 1142 return (zb->zb_blkid * BP_GET_LSIZE(bp)); 1143 } 1144 1145 ASSERT(zb->zb_level >= 0); 1146 1147 return ((zb->zb_blkid << 1148 (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 1149 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 1150 } 1151 1152 static void 1153 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp) 1154 { 1155 const dva_t *dva = bp->blk_dva; 1156 int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1; 1157 1158 if (dump_opt['b'] >= 6) { 1159 snprintf_blkptr(blkbuf, buflen, bp); 1160 return; 1161 } 1162 1163 if (BP_IS_EMBEDDED(bp)) { 1164 (void) sprintf(blkbuf, 1165 "EMBEDDED et=%u %llxL/%llxP B=%llu", 1166 (int)BPE_GET_ETYPE(bp), 1167 (u_longlong_t)BPE_GET_LSIZE(bp), 1168 (u_longlong_t)BPE_GET_PSIZE(bp), 1169 (u_longlong_t)bp->blk_birth); 1170 return; 1171 } 1172 1173 blkbuf[0] = '\0'; 1174 for (int i = 0; i < ndvas; i++) 1175 (void) snprintf(blkbuf + strlen(blkbuf), 1176 buflen - strlen(blkbuf), "%llu:%llx:%llx ", 1177 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 1178 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 1179 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 1180 1181 if (BP_IS_HOLE(bp)) { 1182 (void) snprintf(blkbuf + strlen(blkbuf), 1183 buflen - strlen(blkbuf), 1184 "%llxL B=%llu", 1185 (u_longlong_t)BP_GET_LSIZE(bp), 1186 (u_longlong_t)bp->blk_birth); 1187 } else { 1188 (void) snprintf(blkbuf + strlen(blkbuf), 1189 buflen - strlen(blkbuf), 1190 "%llxL/%llxP F=%llu B=%llu/%llu", 1191 (u_longlong_t)BP_GET_LSIZE(bp), 1192 (u_longlong_t)BP_GET_PSIZE(bp), 1193 (u_longlong_t)BP_GET_FILL(bp), 1194 (u_longlong_t)bp->blk_birth, 1195 (u_longlong_t)BP_PHYSICAL_BIRTH(bp)); 1196 } 1197 } 1198 1199 static void 1200 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb, 1201 const dnode_phys_t *dnp) 1202 { 1203 char blkbuf[BP_SPRINTF_LEN]; 1204 int l; 1205 1206 if (!BP_IS_EMBEDDED(bp)) { 1207 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 1208 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 1209 } 1210 1211 (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb)); 1212 1213 ASSERT(zb->zb_level >= 0); 1214 1215 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 1216 if (l == zb->zb_level) { 1217 (void) printf("L%llx", (u_longlong_t)zb->zb_level); 1218 } else { 1219 (void) printf(" "); 1220 } 1221 } 1222 1223 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp); 1224 (void) printf("%s\n", blkbuf); 1225 } 1226 1227 static int 1228 visit_indirect(spa_t *spa, const dnode_phys_t *dnp, 1229 blkptr_t *bp, const zbookmark_phys_t *zb) 1230 { 1231 int err = 0; 1232 1233 if (bp->blk_birth == 0) 1234 return (0); 1235 1236 print_indirect(bp, zb, dnp); 1237 1238 if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) { 1239 arc_flags_t flags = ARC_FLAG_WAIT; 1240 int i; 1241 blkptr_t *cbp; 1242 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT; 1243 arc_buf_t *buf; 1244 uint64_t fill = 0; 1245 1246 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf, 1247 ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb); 1248 if (err) 1249 return (err); 1250 ASSERT(buf->b_data); 1251 1252 /* recursively visit blocks below this */ 1253 cbp = buf->b_data; 1254 for (i = 0; i < epb; i++, cbp++) { 1255 zbookmark_phys_t czb; 1256 1257 SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object, 1258 zb->zb_level - 1, 1259 zb->zb_blkid * epb + i); 1260 err = visit_indirect(spa, dnp, cbp, &czb); 1261 if (err) 1262 break; 1263 fill += BP_GET_FILL(cbp); 1264 } 1265 if (!err) 1266 ASSERT3U(fill, ==, BP_GET_FILL(bp)); 1267 (void) arc_buf_remove_ref(buf, &buf); 1268 } 1269 1270 return (err); 1271 } 1272 1273 /*ARGSUSED*/ 1274 static void 1275 dump_indirect(dnode_t *dn) 1276 { 1277 dnode_phys_t *dnp = dn->dn_phys; 1278 int j; 1279 zbookmark_phys_t czb; 1280 1281 (void) printf("Indirect blocks:\n"); 1282 1283 SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset), 1284 dn->dn_object, dnp->dn_nlevels - 1, 0); 1285 for (j = 0; j < dnp->dn_nblkptr; j++) { 1286 czb.zb_blkid = j; 1287 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp, 1288 &dnp->dn_blkptr[j], &czb); 1289 } 1290 1291 (void) printf("\n"); 1292 } 1293 1294 /*ARGSUSED*/ 1295 static void 1296 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 1297 { 1298 dsl_dir_phys_t *dd = data; 1299 time_t crtime; 1300 char nice[32]; 1301 1302 if (dd == NULL) 1303 return; 1304 1305 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t)); 1306 1307 crtime = dd->dd_creation_time; 1308 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1309 (void) printf("\t\thead_dataset_obj = %llu\n", 1310 (u_longlong_t)dd->dd_head_dataset_obj); 1311 (void) printf("\t\tparent_dir_obj = %llu\n", 1312 (u_longlong_t)dd->dd_parent_obj); 1313 (void) printf("\t\torigin_obj = %llu\n", 1314 (u_longlong_t)dd->dd_origin_obj); 1315 (void) printf("\t\tchild_dir_zapobj = %llu\n", 1316 (u_longlong_t)dd->dd_child_dir_zapobj); 1317 zdb_nicenum(dd->dd_used_bytes, nice); 1318 (void) printf("\t\tused_bytes = %s\n", nice); 1319 zdb_nicenum(dd->dd_compressed_bytes, nice); 1320 (void) printf("\t\tcompressed_bytes = %s\n", nice); 1321 zdb_nicenum(dd->dd_uncompressed_bytes, nice); 1322 (void) printf("\t\tuncompressed_bytes = %s\n", nice); 1323 zdb_nicenum(dd->dd_quota, nice); 1324 (void) printf("\t\tquota = %s\n", nice); 1325 zdb_nicenum(dd->dd_reserved, nice); 1326 (void) printf("\t\treserved = %s\n", nice); 1327 (void) printf("\t\tprops_zapobj = %llu\n", 1328 (u_longlong_t)dd->dd_props_zapobj); 1329 (void) printf("\t\tdeleg_zapobj = %llu\n", 1330 (u_longlong_t)dd->dd_deleg_zapobj); 1331 (void) printf("\t\tflags = %llx\n", 1332 (u_longlong_t)dd->dd_flags); 1333 1334 #define DO(which) \ 1335 zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \ 1336 (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice) 1337 DO(HEAD); 1338 DO(SNAP); 1339 DO(CHILD); 1340 DO(CHILD_RSRV); 1341 DO(REFRSRV); 1342 #undef DO 1343 } 1344 1345 /*ARGSUSED*/ 1346 static void 1347 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 1348 { 1349 dsl_dataset_phys_t *ds = data; 1350 time_t crtime; 1351 char used[32], compressed[32], uncompressed[32], unique[32]; 1352 char blkbuf[BP_SPRINTF_LEN]; 1353 1354 if (ds == NULL) 1355 return; 1356 1357 ASSERT(size == sizeof (*ds)); 1358 crtime = ds->ds_creation_time; 1359 zdb_nicenum(ds->ds_referenced_bytes, used); 1360 zdb_nicenum(ds->ds_compressed_bytes, compressed); 1361 zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed); 1362 zdb_nicenum(ds->ds_unique_bytes, unique); 1363 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp); 1364 1365 (void) printf("\t\tdir_obj = %llu\n", 1366 (u_longlong_t)ds->ds_dir_obj); 1367 (void) printf("\t\tprev_snap_obj = %llu\n", 1368 (u_longlong_t)ds->ds_prev_snap_obj); 1369 (void) printf("\t\tprev_snap_txg = %llu\n", 1370 (u_longlong_t)ds->ds_prev_snap_txg); 1371 (void) printf("\t\tnext_snap_obj = %llu\n", 1372 (u_longlong_t)ds->ds_next_snap_obj); 1373 (void) printf("\t\tsnapnames_zapobj = %llu\n", 1374 (u_longlong_t)ds->ds_snapnames_zapobj); 1375 (void) printf("\t\tnum_children = %llu\n", 1376 (u_longlong_t)ds->ds_num_children); 1377 (void) printf("\t\tuserrefs_obj = %llu\n", 1378 (u_longlong_t)ds->ds_userrefs_obj); 1379 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1380 (void) printf("\t\tcreation_txg = %llu\n", 1381 (u_longlong_t)ds->ds_creation_txg); 1382 (void) printf("\t\tdeadlist_obj = %llu\n", 1383 (u_longlong_t)ds->ds_deadlist_obj); 1384 (void) printf("\t\tused_bytes = %s\n", used); 1385 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 1386 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 1387 (void) printf("\t\tunique = %s\n", unique); 1388 (void) printf("\t\tfsid_guid = %llu\n", 1389 (u_longlong_t)ds->ds_fsid_guid); 1390 (void) printf("\t\tguid = %llu\n", 1391 (u_longlong_t)ds->ds_guid); 1392 (void) printf("\t\tflags = %llx\n", 1393 (u_longlong_t)ds->ds_flags); 1394 (void) printf("\t\tnext_clones_obj = %llu\n", 1395 (u_longlong_t)ds->ds_next_clones_obj); 1396 (void) printf("\t\tprops_obj = %llu\n", 1397 (u_longlong_t)ds->ds_props_obj); 1398 (void) printf("\t\tbp = %s\n", blkbuf); 1399 } 1400 1401 /* ARGSUSED */ 1402 static int 1403 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 1404 { 1405 char blkbuf[BP_SPRINTF_LEN]; 1406 1407 if (bp->blk_birth != 0) { 1408 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 1409 (void) printf("\t%s\n", blkbuf); 1410 } 1411 return (0); 1412 } 1413 1414 static void 1415 dump_bptree(objset_t *os, uint64_t obj, char *name) 1416 { 1417 char bytes[32]; 1418 bptree_phys_t *bt; 1419 dmu_buf_t *db; 1420 1421 if (dump_opt['d'] < 3) 1422 return; 1423 1424 VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db)); 1425 bt = db->db_data; 1426 zdb_nicenum(bt->bt_bytes, bytes); 1427 (void) printf("\n %s: %llu datasets, %s\n", 1428 name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes); 1429 dmu_buf_rele(db, FTAG); 1430 1431 if (dump_opt['d'] < 5) 1432 return; 1433 1434 (void) printf("\n"); 1435 1436 (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL); 1437 } 1438 1439 /* ARGSUSED */ 1440 static int 1441 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 1442 { 1443 char blkbuf[BP_SPRINTF_LEN]; 1444 1445 ASSERT(bp->blk_birth != 0); 1446 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp); 1447 (void) printf("\t%s\n", blkbuf); 1448 return (0); 1449 } 1450 1451 static void 1452 dump_full_bpobj(bpobj_t *bpo, char *name, int indent) 1453 { 1454 char bytes[32]; 1455 char comp[32]; 1456 char uncomp[32]; 1457 1458 if (dump_opt['d'] < 3) 1459 return; 1460 1461 zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes); 1462 if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) { 1463 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp); 1464 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp); 1465 (void) printf(" %*s: object %llu, %llu local blkptrs, " 1466 "%llu subobjs in object %llu, %s (%s/%s comp)\n", 1467 indent * 8, name, 1468 (u_longlong_t)bpo->bpo_object, 1469 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, 1470 (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs, 1471 (u_longlong_t)bpo->bpo_phys->bpo_subobjs, 1472 bytes, comp, uncomp); 1473 1474 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) { 1475 uint64_t subobj; 1476 bpobj_t subbpo; 1477 int error; 1478 VERIFY0(dmu_read(bpo->bpo_os, 1479 bpo->bpo_phys->bpo_subobjs, 1480 i * sizeof (subobj), sizeof (subobj), &subobj, 0)); 1481 error = bpobj_open(&subbpo, bpo->bpo_os, subobj); 1482 if (error != 0) { 1483 (void) printf("ERROR %u while trying to open " 1484 "subobj id %llu\n", 1485 error, (u_longlong_t)subobj); 1486 continue; 1487 } 1488 dump_full_bpobj(&subbpo, "subobj", indent + 1); 1489 bpobj_close(&subbpo); 1490 } 1491 } else { 1492 (void) printf(" %*s: object %llu, %llu blkptrs, %s\n", 1493 indent * 8, name, 1494 (u_longlong_t)bpo->bpo_object, 1495 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, 1496 bytes); 1497 } 1498 1499 if (dump_opt['d'] < 5) 1500 return; 1501 1502 1503 if (indent == 0) { 1504 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL); 1505 (void) printf("\n"); 1506 } 1507 } 1508 1509 static void 1510 dump_deadlist(dsl_deadlist_t *dl) 1511 { 1512 dsl_deadlist_entry_t *dle; 1513 uint64_t unused; 1514 char bytes[32]; 1515 char comp[32]; 1516 char uncomp[32]; 1517 1518 if (dump_opt['d'] < 3) 1519 return; 1520 1521 if (dl->dl_oldfmt) { 1522 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0); 1523 return; 1524 } 1525 1526 zdb_nicenum(dl->dl_phys->dl_used, bytes); 1527 zdb_nicenum(dl->dl_phys->dl_comp, comp); 1528 zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp); 1529 (void) printf("\n Deadlist: %s (%s/%s comp)\n", 1530 bytes, comp, uncomp); 1531 1532 if (dump_opt['d'] < 4) 1533 return; 1534 1535 (void) printf("\n"); 1536 1537 /* force the tree to be loaded */ 1538 dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused); 1539 1540 for (dle = avl_first(&dl->dl_tree); dle; 1541 dle = AVL_NEXT(&dl->dl_tree, dle)) { 1542 if (dump_opt['d'] >= 5) { 1543 char buf[128]; 1544 (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ", 1545 (longlong_t)dle->dle_mintxg, 1546 (longlong_t)dle->dle_bpobj.bpo_object); 1547 1548 dump_full_bpobj(&dle->dle_bpobj, buf, 0); 1549 } else { 1550 (void) printf("mintxg %llu -> obj %llu\n", 1551 (longlong_t)dle->dle_mintxg, 1552 (longlong_t)dle->dle_bpobj.bpo_object); 1553 1554 } 1555 } 1556 } 1557 1558 static avl_tree_t idx_tree; 1559 static avl_tree_t domain_tree; 1560 static boolean_t fuid_table_loaded; 1561 static boolean_t sa_loaded; 1562 sa_attr_type_t *sa_attr_table; 1563 1564 static void 1565 fuid_table_destroy() 1566 { 1567 if (fuid_table_loaded) { 1568 zfs_fuid_table_destroy(&idx_tree, &domain_tree); 1569 fuid_table_loaded = B_FALSE; 1570 } 1571 } 1572 1573 /* 1574 * print uid or gid information. 1575 * For normal POSIX id just the id is printed in decimal format. 1576 * For CIFS files with FUID the fuid is printed in hex followed by 1577 * the domain-rid string. 1578 */ 1579 static void 1580 print_idstr(uint64_t id, const char *id_type) 1581 { 1582 if (FUID_INDEX(id)) { 1583 char *domain; 1584 1585 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id)); 1586 (void) printf("\t%s %llx [%s-%d]\n", id_type, 1587 (u_longlong_t)id, domain, (int)FUID_RID(id)); 1588 } else { 1589 (void) printf("\t%s %llu\n", id_type, (u_longlong_t)id); 1590 } 1591 1592 } 1593 1594 static void 1595 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid) 1596 { 1597 uint32_t uid_idx, gid_idx; 1598 1599 uid_idx = FUID_INDEX(uid); 1600 gid_idx = FUID_INDEX(gid); 1601 1602 /* Load domain table, if not already loaded */ 1603 if (!fuid_table_loaded && (uid_idx || gid_idx)) { 1604 uint64_t fuid_obj; 1605 1606 /* first find the fuid object. It lives in the master node */ 1607 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 1608 8, 1, &fuid_obj) == 0); 1609 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree); 1610 (void) zfs_fuid_table_load(os, fuid_obj, 1611 &idx_tree, &domain_tree); 1612 fuid_table_loaded = B_TRUE; 1613 } 1614 1615 print_idstr(uid, "uid"); 1616 print_idstr(gid, "gid"); 1617 } 1618 1619 /*ARGSUSED*/ 1620 static void 1621 dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 1622 { 1623 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 1624 sa_handle_t *hdl; 1625 uint64_t xattr, rdev, gen; 1626 uint64_t uid, gid, mode, fsize, parent, links; 1627 uint64_t pflags; 1628 uint64_t acctm[2], modtm[2], chgtm[2], crtm[2]; 1629 time_t z_crtime, z_atime, z_mtime, z_ctime; 1630 sa_bulk_attr_t bulk[12]; 1631 int idx = 0; 1632 int error; 1633 1634 if (!sa_loaded) { 1635 uint64_t sa_attrs = 0; 1636 uint64_t version; 1637 1638 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR, 1639 8, 1, &version) == 0); 1640 if (version >= ZPL_VERSION_SA) { 1641 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 1642 8, 1, &sa_attrs) == 0); 1643 } 1644 if ((error = sa_setup(os, sa_attrs, zfs_attr_table, 1645 ZPL_END, &sa_attr_table)) != 0) { 1646 (void) printf("sa_setup failed errno %d, can't " 1647 "display znode contents\n", error); 1648 return; 1649 } 1650 sa_loaded = B_TRUE; 1651 } 1652 1653 if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) { 1654 (void) printf("Failed to get handle for SA znode\n"); 1655 return; 1656 } 1657 1658 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8); 1659 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8); 1660 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL, 1661 &links, 8); 1662 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8); 1663 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL, 1664 &mode, 8); 1665 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT], 1666 NULL, &parent, 8); 1667 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL, 1668 &fsize, 8); 1669 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL, 1670 acctm, 16); 1671 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL, 1672 modtm, 16); 1673 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL, 1674 crtm, 16); 1675 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL, 1676 chgtm, 16); 1677 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL, 1678 &pflags, 8); 1679 1680 if (sa_bulk_lookup(hdl, bulk, idx)) { 1681 (void) sa_handle_destroy(hdl); 1682 return; 1683 } 1684 1685 error = zfs_obj_to_path(os, object, path, sizeof (path)); 1686 if (error != 0) { 1687 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>", 1688 (u_longlong_t)object); 1689 } 1690 if (dump_opt['d'] < 3) { 1691 (void) printf("\t%s\n", path); 1692 (void) sa_handle_destroy(hdl); 1693 return; 1694 } 1695 1696 z_crtime = (time_t)crtm[0]; 1697 z_atime = (time_t)acctm[0]; 1698 z_mtime = (time_t)modtm[0]; 1699 z_ctime = (time_t)chgtm[0]; 1700 1701 (void) printf("\tpath %s\n", path); 1702 dump_uidgid(os, uid, gid); 1703 (void) printf("\tatime %s", ctime(&z_atime)); 1704 (void) printf("\tmtime %s", ctime(&z_mtime)); 1705 (void) printf("\tctime %s", ctime(&z_ctime)); 1706 (void) printf("\tcrtime %s", ctime(&z_crtime)); 1707 (void) printf("\tgen %llu\n", (u_longlong_t)gen); 1708 (void) printf("\tmode %llo\n", (u_longlong_t)mode); 1709 (void) printf("\tsize %llu\n", (u_longlong_t)fsize); 1710 (void) printf("\tparent %llu\n", (u_longlong_t)parent); 1711 (void) printf("\tlinks %llu\n", (u_longlong_t)links); 1712 (void) printf("\tpflags %llx\n", (u_longlong_t)pflags); 1713 if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr, 1714 sizeof (uint64_t)) == 0) 1715 (void) printf("\txattr %llu\n", (u_longlong_t)xattr); 1716 if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev, 1717 sizeof (uint64_t)) == 0) 1718 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)rdev); 1719 sa_handle_destroy(hdl); 1720 } 1721 1722 /*ARGSUSED*/ 1723 static void 1724 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 1725 { 1726 } 1727 1728 /*ARGSUSED*/ 1729 static void 1730 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 1731 { 1732 } 1733 1734 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = { 1735 dump_none, /* unallocated */ 1736 dump_zap, /* object directory */ 1737 dump_uint64, /* object array */ 1738 dump_none, /* packed nvlist */ 1739 dump_packed_nvlist, /* packed nvlist size */ 1740 dump_none, /* bpobj */ 1741 dump_bpobj, /* bpobj header */ 1742 dump_none, /* SPA space map header */ 1743 dump_none, /* SPA space map */ 1744 dump_none, /* ZIL intent log */ 1745 dump_dnode, /* DMU dnode */ 1746 dump_dmu_objset, /* DMU objset */ 1747 dump_dsl_dir, /* DSL directory */ 1748 dump_zap, /* DSL directory child map */ 1749 dump_zap, /* DSL dataset snap map */ 1750 dump_zap, /* DSL props */ 1751 dump_dsl_dataset, /* DSL dataset */ 1752 dump_znode, /* ZFS znode */ 1753 dump_acl, /* ZFS V0 ACL */ 1754 dump_uint8, /* ZFS plain file */ 1755 dump_zpldir, /* ZFS directory */ 1756 dump_zap, /* ZFS master node */ 1757 dump_zap, /* ZFS delete queue */ 1758 dump_uint8, /* zvol object */ 1759 dump_zap, /* zvol prop */ 1760 dump_uint8, /* other uint8[] */ 1761 dump_uint64, /* other uint64[] */ 1762 dump_zap, /* other ZAP */ 1763 dump_zap, /* persistent error log */ 1764 dump_uint8, /* SPA history */ 1765 dump_history_offsets, /* SPA history offsets */ 1766 dump_zap, /* Pool properties */ 1767 dump_zap, /* DSL permissions */ 1768 dump_acl, /* ZFS ACL */ 1769 dump_uint8, /* ZFS SYSACL */ 1770 dump_none, /* FUID nvlist */ 1771 dump_packed_nvlist, /* FUID nvlist size */ 1772 dump_zap, /* DSL dataset next clones */ 1773 dump_zap, /* DSL scrub queue */ 1774 dump_zap, /* ZFS user/group used */ 1775 dump_zap, /* ZFS user/group quota */ 1776 dump_zap, /* snapshot refcount tags */ 1777 dump_ddt_zap, /* DDT ZAP object */ 1778 dump_zap, /* DDT statistics */ 1779 dump_znode, /* SA object */ 1780 dump_zap, /* SA Master Node */ 1781 dump_sa_attrs, /* SA attribute registration */ 1782 dump_sa_layouts, /* SA attribute layouts */ 1783 dump_zap, /* DSL scrub translations */ 1784 dump_none, /* fake dedup BP */ 1785 dump_zap, /* deadlist */ 1786 dump_none, /* deadlist hdr */ 1787 dump_zap, /* dsl clones */ 1788 dump_bpobj_subobjs, /* bpobj subobjs */ 1789 dump_unknown, /* Unknown type, must be last */ 1790 }; 1791 1792 static void 1793 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 1794 { 1795 dmu_buf_t *db = NULL; 1796 dmu_object_info_t doi; 1797 dnode_t *dn; 1798 void *bonus = NULL; 1799 size_t bsize = 0; 1800 char iblk[32], dblk[32], lsize[32], asize[32], fill[32]; 1801 char bonus_size[32]; 1802 char aux[50]; 1803 int error; 1804 1805 if (*print_header) { 1806 (void) printf("\n%10s %3s %5s %5s %5s %5s %6s %s\n", 1807 "Object", "lvl", "iblk", "dblk", "dsize", "lsize", 1808 "%full", "type"); 1809 *print_header = 0; 1810 } 1811 1812 if (object == 0) { 1813 dn = DMU_META_DNODE(os); 1814 } else { 1815 error = dmu_bonus_hold(os, object, FTAG, &db); 1816 if (error) 1817 fatal("dmu_bonus_hold(%llu) failed, errno %u", 1818 object, error); 1819 bonus = db->db_data; 1820 bsize = db->db_size; 1821 dn = DB_DNODE((dmu_buf_impl_t *)db); 1822 } 1823 dmu_object_info_from_dnode(dn, &doi); 1824 1825 zdb_nicenum(doi.doi_metadata_block_size, iblk); 1826 zdb_nicenum(doi.doi_data_block_size, dblk); 1827 zdb_nicenum(doi.doi_max_offset, lsize); 1828 zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize); 1829 zdb_nicenum(doi.doi_bonus_size, bonus_size); 1830 (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count * 1831 doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) / 1832 doi.doi_max_offset); 1833 1834 aux[0] = '\0'; 1835 1836 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 1837 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 1838 ZDB_CHECKSUM_NAME(doi.doi_checksum)); 1839 } 1840 1841 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 1842 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 1843 ZDB_COMPRESS_NAME(doi.doi_compress)); 1844 } 1845 1846 (void) printf("%10lld %3u %5s %5s %5s %5s %6s %s%s\n", 1847 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, 1848 asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux); 1849 1850 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 1851 (void) printf("%10s %3s %5s %5s %5s %5s %6s %s\n", 1852 "", "", "", "", "", bonus_size, "bonus", 1853 ZDB_OT_NAME(doi.doi_bonus_type)); 1854 } 1855 1856 if (verbosity >= 4) { 1857 (void) printf("\tdnode flags: %s%s%s\n", 1858 (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ? 1859 "USED_BYTES " : "", 1860 (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ? 1861 "USERUSED_ACCOUNTED " : "", 1862 (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ? 1863 "SPILL_BLKPTR" : ""); 1864 (void) printf("\tdnode maxblkid: %llu\n", 1865 (longlong_t)dn->dn_phys->dn_maxblkid); 1866 1867 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object, 1868 bonus, bsize); 1869 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0); 1870 *print_header = 1; 1871 } 1872 1873 if (verbosity >= 5) 1874 dump_indirect(dn); 1875 1876 if (verbosity >= 5) { 1877 /* 1878 * Report the list of segments that comprise the object. 1879 */ 1880 uint64_t start = 0; 1881 uint64_t end; 1882 uint64_t blkfill = 1; 1883 int minlvl = 1; 1884 1885 if (dn->dn_type == DMU_OT_DNODE) { 1886 minlvl = 0; 1887 blkfill = DNODES_PER_BLOCK; 1888 } 1889 1890 for (;;) { 1891 char segsize[32]; 1892 error = dnode_next_offset(dn, 1893 0, &start, minlvl, blkfill, 0); 1894 if (error) 1895 break; 1896 end = start; 1897 error = dnode_next_offset(dn, 1898 DNODE_FIND_HOLE, &end, minlvl, blkfill, 0); 1899 zdb_nicenum(end - start, segsize); 1900 (void) printf("\t\tsegment [%016llx, %016llx)" 1901 " size %5s\n", (u_longlong_t)start, 1902 (u_longlong_t)end, segsize); 1903 if (error) 1904 break; 1905 start = end; 1906 } 1907 } 1908 1909 if (db != NULL) 1910 dmu_buf_rele(db, FTAG); 1911 } 1912 1913 static char *objset_types[DMU_OST_NUMTYPES] = { 1914 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1915 1916 static void 1917 dump_dir(objset_t *os) 1918 { 1919 dmu_objset_stats_t dds; 1920 uint64_t object, object_count; 1921 uint64_t refdbytes, usedobjs, scratch; 1922 char numbuf[32]; 1923 char blkbuf[BP_SPRINTF_LEN + 20]; 1924 char osname[ZFS_MAX_DATASET_NAME_LEN]; 1925 char *type = "UNKNOWN"; 1926 int verbosity = dump_opt['d']; 1927 int print_header = 1; 1928 int i, error; 1929 1930 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 1931 dmu_objset_fast_stat(os, &dds); 1932 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 1933 1934 if (dds.dds_type < DMU_OST_NUMTYPES) 1935 type = objset_types[dds.dds_type]; 1936 1937 if (dds.dds_type == DMU_OST_META) { 1938 dds.dds_creation_txg = TXG_INITIAL; 1939 usedobjs = BP_GET_FILL(os->os_rootbp); 1940 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)-> 1941 dd_used_bytes; 1942 } else { 1943 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 1944 } 1945 1946 ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp)); 1947 1948 zdb_nicenum(refdbytes, numbuf); 1949 1950 if (verbosity >= 4) { 1951 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp "); 1952 (void) snprintf_blkptr(blkbuf + strlen(blkbuf), 1953 sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp); 1954 } else { 1955 blkbuf[0] = '\0'; 1956 } 1957 1958 dmu_objset_name(os, osname); 1959 1960 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 1961 "%s, %llu objects%s\n", 1962 osname, type, (u_longlong_t)dmu_objset_id(os), 1963 (u_longlong_t)dds.dds_creation_txg, 1964 numbuf, (u_longlong_t)usedobjs, blkbuf); 1965 1966 if (zopt_objects != 0) { 1967 for (i = 0; i < zopt_objects; i++) 1968 dump_object(os, zopt_object[i], verbosity, 1969 &print_header); 1970 (void) printf("\n"); 1971 return; 1972 } 1973 1974 if (dump_opt['i'] != 0 || verbosity >= 2) 1975 dump_intent_log(dmu_objset_zil(os)); 1976 1977 if (dmu_objset_ds(os) != NULL) 1978 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist); 1979 1980 if (verbosity < 2) 1981 return; 1982 1983 if (BP_IS_HOLE(os->os_rootbp)) 1984 return; 1985 1986 dump_object(os, 0, verbosity, &print_header); 1987 object_count = 0; 1988 if (DMU_USERUSED_DNODE(os) != NULL && 1989 DMU_USERUSED_DNODE(os)->dn_type != 0) { 1990 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header); 1991 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header); 1992 } 1993 1994 object = 0; 1995 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 1996 dump_object(os, object, verbosity, &print_header); 1997 object_count++; 1998 } 1999 2000 ASSERT3U(object_count, ==, usedobjs); 2001 2002 (void) printf("\n"); 2003 2004 if (error != ESRCH) { 2005 (void) fprintf(stderr, "dmu_object_next() = %d\n", error); 2006 abort(); 2007 } 2008 } 2009 2010 static void 2011 dump_uberblock(uberblock_t *ub, const char *header, const char *footer) 2012 { 2013 time_t timestamp = ub->ub_timestamp; 2014 2015 (void) printf(header ? header : ""); 2016 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 2017 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 2018 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 2019 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 2020 (void) printf("\ttimestamp = %llu UTC = %s", 2021 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 2022 if (dump_opt['u'] >= 3) { 2023 char blkbuf[BP_SPRINTF_LEN]; 2024 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp); 2025 (void) printf("\trootbp = %s\n", blkbuf); 2026 } 2027 (void) printf(footer ? footer : ""); 2028 } 2029 2030 static void 2031 dump_config(spa_t *spa) 2032 { 2033 dmu_buf_t *db; 2034 size_t nvsize = 0; 2035 int error = 0; 2036 2037 2038 error = dmu_bonus_hold(spa->spa_meta_objset, 2039 spa->spa_config_object, FTAG, &db); 2040 2041 if (error == 0) { 2042 nvsize = *(uint64_t *)db->db_data; 2043 dmu_buf_rele(db, FTAG); 2044 2045 (void) printf("\nMOS Configuration:\n"); 2046 dump_packed_nvlist(spa->spa_meta_objset, 2047 spa->spa_config_object, (void *)&nvsize, 1); 2048 } else { 2049 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d", 2050 (u_longlong_t)spa->spa_config_object, error); 2051 } 2052 } 2053 2054 static void 2055 dump_cachefile(const char *cachefile) 2056 { 2057 int fd; 2058 struct stat64 statbuf; 2059 char *buf; 2060 nvlist_t *config; 2061 2062 if ((fd = open64(cachefile, O_RDONLY)) < 0) { 2063 (void) printf("cannot open '%s': %s\n", cachefile, 2064 strerror(errno)); 2065 exit(1); 2066 } 2067 2068 if (fstat64(fd, &statbuf) != 0) { 2069 (void) printf("failed to stat '%s': %s\n", cachefile, 2070 strerror(errno)); 2071 exit(1); 2072 } 2073 2074 if ((buf = malloc(statbuf.st_size)) == NULL) { 2075 (void) fprintf(stderr, "failed to allocate %llu bytes\n", 2076 (u_longlong_t)statbuf.st_size); 2077 exit(1); 2078 } 2079 2080 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) { 2081 (void) fprintf(stderr, "failed to read %llu bytes\n", 2082 (u_longlong_t)statbuf.st_size); 2083 exit(1); 2084 } 2085 2086 (void) close(fd); 2087 2088 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) { 2089 (void) fprintf(stderr, "failed to unpack nvlist\n"); 2090 exit(1); 2091 } 2092 2093 free(buf); 2094 2095 dump_nvlist(config, 0); 2096 2097 nvlist_free(config); 2098 } 2099 2100 #define ZDB_MAX_UB_HEADER_SIZE 32 2101 2102 static void 2103 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift) 2104 { 2105 vdev_t vd; 2106 vdev_t *vdp = &vd; 2107 char header[ZDB_MAX_UB_HEADER_SIZE]; 2108 2109 vd.vdev_ashift = ashift; 2110 vdp->vdev_top = vdp; 2111 2112 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) { 2113 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i); 2114 uberblock_t *ub = (void *)((char *)lbl + uoff); 2115 2116 if (uberblock_verify(ub)) 2117 continue; 2118 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE, 2119 "Uberblock[%d]\n", i); 2120 dump_uberblock(ub, header, ""); 2121 } 2122 } 2123 2124 static void 2125 dump_label(const char *dev) 2126 { 2127 int fd; 2128 vdev_label_t label; 2129 char *path, *buf = label.vl_vdev_phys.vp_nvlist; 2130 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 2131 struct stat64 statbuf; 2132 uint64_t psize, ashift; 2133 int len = strlen(dev) + 1; 2134 2135 if (strncmp(dev, "/dev/dsk/", 9) == 0) { 2136 len++; 2137 path = malloc(len); 2138 (void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9); 2139 } else { 2140 path = strdup(dev); 2141 } 2142 2143 if ((fd = open64(path, O_RDONLY)) < 0) { 2144 (void) printf("cannot open '%s': %s\n", path, strerror(errno)); 2145 free(path); 2146 exit(1); 2147 } 2148 2149 if (fstat64(fd, &statbuf) != 0) { 2150 (void) printf("failed to stat '%s': %s\n", path, 2151 strerror(errno)); 2152 free(path); 2153 (void) close(fd); 2154 exit(1); 2155 } 2156 2157 if (S_ISBLK(statbuf.st_mode)) { 2158 (void) printf("cannot use '%s': character device required\n", 2159 path); 2160 free(path); 2161 (void) close(fd); 2162 exit(1); 2163 } 2164 2165 psize = statbuf.st_size; 2166 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 2167 2168 for (int l = 0; l < VDEV_LABELS; l++) { 2169 nvlist_t *config = NULL; 2170 2171 (void) printf("--------------------------------------------\n"); 2172 (void) printf("LABEL %d\n", l); 2173 (void) printf("--------------------------------------------\n"); 2174 2175 if (pread64(fd, &label, sizeof (label), 2176 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 2177 (void) printf("failed to read label %d\n", l); 2178 continue; 2179 } 2180 2181 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 2182 (void) printf("failed to unpack label %d\n", l); 2183 ashift = SPA_MINBLOCKSHIFT; 2184 } else { 2185 nvlist_t *vdev_tree = NULL; 2186 2187 dump_nvlist(config, 4); 2188 if ((nvlist_lookup_nvlist(config, 2189 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) || 2190 (nvlist_lookup_uint64(vdev_tree, 2191 ZPOOL_CONFIG_ASHIFT, &ashift) != 0)) 2192 ashift = SPA_MINBLOCKSHIFT; 2193 nvlist_free(config); 2194 } 2195 if (dump_opt['u']) 2196 dump_label_uberblocks(&label, ashift); 2197 } 2198 2199 free(path); 2200 (void) close(fd); 2201 } 2202 2203 static uint64_t dataset_feature_count[SPA_FEATURES]; 2204 2205 /*ARGSUSED*/ 2206 static int 2207 dump_one_dir(const char *dsname, void *arg) 2208 { 2209 int error; 2210 objset_t *os; 2211 2212 error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os); 2213 if (error) { 2214 (void) printf("Could not open %s, error %d\n", dsname, error); 2215 return (0); 2216 } 2217 2218 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 2219 if (!dmu_objset_ds(os)->ds_feature_inuse[f]) 2220 continue; 2221 ASSERT(spa_feature_table[f].fi_flags & 2222 ZFEATURE_FLAG_PER_DATASET); 2223 dataset_feature_count[f]++; 2224 } 2225 2226 dump_dir(os); 2227 dmu_objset_disown(os, FTAG); 2228 fuid_table_destroy(); 2229 sa_loaded = B_FALSE; 2230 return (0); 2231 } 2232 2233 /* 2234 * Block statistics. 2235 */ 2236 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2) 2237 typedef struct zdb_blkstats { 2238 uint64_t zb_asize; 2239 uint64_t zb_lsize; 2240 uint64_t zb_psize; 2241 uint64_t zb_count; 2242 uint64_t zb_gangs; 2243 uint64_t zb_ditto_samevdev; 2244 uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE]; 2245 } zdb_blkstats_t; 2246 2247 /* 2248 * Extended object types to report deferred frees and dedup auto-ditto blocks. 2249 */ 2250 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0) 2251 #define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1) 2252 #define ZDB_OT_OTHER (DMU_OT_NUMTYPES + 2) 2253 #define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 3) 2254 2255 static char *zdb_ot_extname[] = { 2256 "deferred free", 2257 "dedup ditto", 2258 "other", 2259 "Total", 2260 }; 2261 2262 #define ZB_TOTAL DN_MAX_LEVELS 2263 2264 typedef struct zdb_cb { 2265 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1]; 2266 uint64_t zcb_dedup_asize; 2267 uint64_t zcb_dedup_blocks; 2268 uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES]; 2269 uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES] 2270 [BPE_PAYLOAD_SIZE]; 2271 uint64_t zcb_start; 2272 uint64_t zcb_lastprint; 2273 uint64_t zcb_totalasize; 2274 uint64_t zcb_errors[256]; 2275 int zcb_readfails; 2276 int zcb_haderrors; 2277 spa_t *zcb_spa; 2278 } zdb_cb_t; 2279 2280 static void 2281 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp, 2282 dmu_object_type_t type) 2283 { 2284 uint64_t refcnt = 0; 2285 2286 ASSERT(type < ZDB_OT_TOTAL); 2287 2288 if (zilog && zil_bp_tree_add(zilog, bp) != 0) 2289 return; 2290 2291 for (int i = 0; i < 4; i++) { 2292 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 2293 int t = (i & 1) ? type : ZDB_OT_TOTAL; 2294 int equal; 2295 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 2296 2297 zb->zb_asize += BP_GET_ASIZE(bp); 2298 zb->zb_lsize += BP_GET_LSIZE(bp); 2299 zb->zb_psize += BP_GET_PSIZE(bp); 2300 zb->zb_count++; 2301 2302 /* 2303 * The histogram is only big enough to record blocks up to 2304 * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last, 2305 * "other", bucket. 2306 */ 2307 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT; 2308 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1); 2309 zb->zb_psize_histogram[idx]++; 2310 2311 zb->zb_gangs += BP_COUNT_GANG(bp); 2312 2313 switch (BP_GET_NDVAS(bp)) { 2314 case 2: 2315 if (DVA_GET_VDEV(&bp->blk_dva[0]) == 2316 DVA_GET_VDEV(&bp->blk_dva[1])) 2317 zb->zb_ditto_samevdev++; 2318 break; 2319 case 3: 2320 equal = (DVA_GET_VDEV(&bp->blk_dva[0]) == 2321 DVA_GET_VDEV(&bp->blk_dva[1])) + 2322 (DVA_GET_VDEV(&bp->blk_dva[0]) == 2323 DVA_GET_VDEV(&bp->blk_dva[2])) + 2324 (DVA_GET_VDEV(&bp->blk_dva[1]) == 2325 DVA_GET_VDEV(&bp->blk_dva[2])); 2326 if (equal != 0) 2327 zb->zb_ditto_samevdev++; 2328 break; 2329 } 2330 2331 } 2332 2333 if (BP_IS_EMBEDDED(bp)) { 2334 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++; 2335 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)] 2336 [BPE_GET_PSIZE(bp)]++; 2337 return; 2338 } 2339 2340 if (dump_opt['L']) 2341 return; 2342 2343 if (BP_GET_DEDUP(bp)) { 2344 ddt_t *ddt; 2345 ddt_entry_t *dde; 2346 2347 ddt = ddt_select(zcb->zcb_spa, bp); 2348 ddt_enter(ddt); 2349 dde = ddt_lookup(ddt, bp, B_FALSE); 2350 2351 if (dde == NULL) { 2352 refcnt = 0; 2353 } else { 2354 ddt_phys_t *ddp = ddt_phys_select(dde, bp); 2355 ddt_phys_decref(ddp); 2356 refcnt = ddp->ddp_refcnt; 2357 if (ddt_phys_total_refcnt(dde) == 0) 2358 ddt_remove(ddt, dde); 2359 } 2360 ddt_exit(ddt); 2361 } 2362 2363 VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa, 2364 refcnt ? 0 : spa_first_txg(zcb->zcb_spa), 2365 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0); 2366 } 2367 2368 static void 2369 zdb_blkptr_done(zio_t *zio) 2370 { 2371 spa_t *spa = zio->io_spa; 2372 blkptr_t *bp = zio->io_bp; 2373 int ioerr = zio->io_error; 2374 zdb_cb_t *zcb = zio->io_private; 2375 zbookmark_phys_t *zb = &zio->io_bookmark; 2376 2377 zio_data_buf_free(zio->io_data, zio->io_size); 2378 2379 mutex_enter(&spa->spa_scrub_lock); 2380 spa->spa_scrub_inflight--; 2381 cv_broadcast(&spa->spa_scrub_io_cv); 2382 2383 if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { 2384 char blkbuf[BP_SPRINTF_LEN]; 2385 2386 zcb->zcb_haderrors = 1; 2387 zcb->zcb_errors[ioerr]++; 2388 2389 if (dump_opt['b'] >= 2) 2390 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2391 else 2392 blkbuf[0] = '\0'; 2393 2394 (void) printf("zdb_blkptr_cb: " 2395 "Got error %d reading " 2396 "<%llu, %llu, %lld, %llx> %s -- skipping\n", 2397 ioerr, 2398 (u_longlong_t)zb->zb_objset, 2399 (u_longlong_t)zb->zb_object, 2400 (u_longlong_t)zb->zb_level, 2401 (u_longlong_t)zb->zb_blkid, 2402 blkbuf); 2403 } 2404 mutex_exit(&spa->spa_scrub_lock); 2405 } 2406 2407 static int 2408 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2409 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 2410 { 2411 zdb_cb_t *zcb = arg; 2412 dmu_object_type_t type; 2413 boolean_t is_metadata; 2414 2415 if (bp == NULL) 2416 return (0); 2417 2418 if (dump_opt['b'] >= 5 && bp->blk_birth > 0) { 2419 char blkbuf[BP_SPRINTF_LEN]; 2420 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2421 (void) printf("objset %llu object %llu " 2422 "level %lld offset 0x%llx %s\n", 2423 (u_longlong_t)zb->zb_objset, 2424 (u_longlong_t)zb->zb_object, 2425 (longlong_t)zb->zb_level, 2426 (u_longlong_t)blkid2offset(dnp, bp, zb), 2427 blkbuf); 2428 } 2429 2430 if (BP_IS_HOLE(bp)) 2431 return (0); 2432 2433 type = BP_GET_TYPE(bp); 2434 2435 zdb_count_block(zcb, zilog, bp, 2436 (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type); 2437 2438 is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)); 2439 2440 if (!BP_IS_EMBEDDED(bp) && 2441 (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) { 2442 size_t size = BP_GET_PSIZE(bp); 2443 void *data = zio_data_buf_alloc(size); 2444 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW; 2445 2446 /* If it's an intent log block, failure is expected. */ 2447 if (zb->zb_level == ZB_ZIL_LEVEL) 2448 flags |= ZIO_FLAG_SPECULATIVE; 2449 2450 mutex_enter(&spa->spa_scrub_lock); 2451 while (spa->spa_scrub_inflight > max_inflight) 2452 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); 2453 spa->spa_scrub_inflight++; 2454 mutex_exit(&spa->spa_scrub_lock); 2455 2456 zio_nowait(zio_read(NULL, spa, bp, data, size, 2457 zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb)); 2458 } 2459 2460 zcb->zcb_readfails = 0; 2461 2462 /* only call gethrtime() every 100 blocks */ 2463 static int iters; 2464 if (++iters > 100) 2465 iters = 0; 2466 else 2467 return (0); 2468 2469 if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) { 2470 uint64_t now = gethrtime(); 2471 char buf[10]; 2472 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize; 2473 int kb_per_sec = 2474 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000)); 2475 int sec_remaining = 2476 (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec; 2477 2478 zfs_nicenum(bytes, buf, sizeof (buf)); 2479 (void) fprintf(stderr, 2480 "\r%5s completed (%4dMB/s) " 2481 "estimated time remaining: %uhr %02umin %02usec ", 2482 buf, kb_per_sec / 1024, 2483 sec_remaining / 60 / 60, 2484 sec_remaining / 60 % 60, 2485 sec_remaining % 60); 2486 2487 zcb->zcb_lastprint = now; 2488 } 2489 2490 return (0); 2491 } 2492 2493 static void 2494 zdb_leak(void *arg, uint64_t start, uint64_t size) 2495 { 2496 vdev_t *vd = arg; 2497 2498 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 2499 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size); 2500 } 2501 2502 static metaslab_ops_t zdb_metaslab_ops = { 2503 NULL /* alloc */ 2504 }; 2505 2506 static void 2507 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb) 2508 { 2509 ddt_bookmark_t ddb = { 0 }; 2510 ddt_entry_t dde; 2511 int error; 2512 2513 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) { 2514 blkptr_t blk; 2515 ddt_phys_t *ddp = dde.dde_phys; 2516 2517 if (ddb.ddb_class == DDT_CLASS_UNIQUE) 2518 return; 2519 2520 ASSERT(ddt_phys_total_refcnt(&dde) > 1); 2521 2522 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 2523 if (ddp->ddp_phys_birth == 0) 2524 continue; 2525 ddt_bp_create(ddb.ddb_checksum, 2526 &dde.dde_key, ddp, &blk); 2527 if (p == DDT_PHYS_DITTO) { 2528 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO); 2529 } else { 2530 zcb->zcb_dedup_asize += 2531 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1); 2532 zcb->zcb_dedup_blocks++; 2533 } 2534 } 2535 if (!dump_opt['L']) { 2536 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum]; 2537 ddt_enter(ddt); 2538 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL); 2539 ddt_exit(ddt); 2540 } 2541 } 2542 2543 ASSERT(error == ENOENT); 2544 } 2545 2546 static void 2547 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb) 2548 { 2549 zcb->zcb_spa = spa; 2550 2551 if (!dump_opt['L']) { 2552 vdev_t *rvd = spa->spa_root_vdev; 2553 for (uint64_t c = 0; c < rvd->vdev_children; c++) { 2554 vdev_t *vd = rvd->vdev_child[c]; 2555 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 2556 metaslab_t *msp = vd->vdev_ms[m]; 2557 mutex_enter(&msp->ms_lock); 2558 metaslab_unload(msp); 2559 2560 /* 2561 * For leak detection, we overload the metaslab 2562 * ms_tree to contain allocated segments 2563 * instead of free segments. As a result, 2564 * we can't use the normal metaslab_load/unload 2565 * interfaces. 2566 */ 2567 if (msp->ms_sm != NULL) { 2568 (void) fprintf(stderr, 2569 "\rloading space map for " 2570 "vdev %llu of %llu, " 2571 "metaslab %llu of %llu ...", 2572 (longlong_t)c, 2573 (longlong_t)rvd->vdev_children, 2574 (longlong_t)m, 2575 (longlong_t)vd->vdev_ms_count); 2576 2577 msp->ms_ops = &zdb_metaslab_ops; 2578 2579 /* 2580 * We don't want to spend the CPU 2581 * manipulating the size-ordered 2582 * tree, so clear the range_tree 2583 * ops. 2584 */ 2585 msp->ms_tree->rt_ops = NULL; 2586 VERIFY0(space_map_load(msp->ms_sm, 2587 msp->ms_tree, SM_ALLOC)); 2588 msp->ms_loaded = B_TRUE; 2589 } 2590 mutex_exit(&msp->ms_lock); 2591 } 2592 } 2593 (void) fprintf(stderr, "\n"); 2594 } 2595 2596 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2597 2598 zdb_ddt_leak_init(spa, zcb); 2599 2600 spa_config_exit(spa, SCL_CONFIG, FTAG); 2601 } 2602 2603 static void 2604 zdb_leak_fini(spa_t *spa) 2605 { 2606 if (!dump_opt['L']) { 2607 vdev_t *rvd = spa->spa_root_vdev; 2608 for (int c = 0; c < rvd->vdev_children; c++) { 2609 vdev_t *vd = rvd->vdev_child[c]; 2610 for (int m = 0; m < vd->vdev_ms_count; m++) { 2611 metaslab_t *msp = vd->vdev_ms[m]; 2612 mutex_enter(&msp->ms_lock); 2613 2614 /* 2615 * The ms_tree has been overloaded to 2616 * contain allocated segments. Now that we 2617 * finished traversing all blocks, any 2618 * block that remains in the ms_tree 2619 * represents an allocated block that we 2620 * did not claim during the traversal. 2621 * Claimed blocks would have been removed 2622 * from the ms_tree. 2623 */ 2624 range_tree_vacate(msp->ms_tree, zdb_leak, vd); 2625 msp->ms_loaded = B_FALSE; 2626 2627 mutex_exit(&msp->ms_lock); 2628 } 2629 } 2630 } 2631 } 2632 2633 /* ARGSUSED */ 2634 static int 2635 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 2636 { 2637 zdb_cb_t *zcb = arg; 2638 2639 if (dump_opt['b'] >= 5) { 2640 char blkbuf[BP_SPRINTF_LEN]; 2641 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2642 (void) printf("[%s] %s\n", 2643 "deferred free", blkbuf); 2644 } 2645 zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED); 2646 return (0); 2647 } 2648 2649 static int 2650 dump_block_stats(spa_t *spa) 2651 { 2652 zdb_cb_t zcb = { 0 }; 2653 zdb_blkstats_t *zb, *tzb; 2654 uint64_t norm_alloc, norm_space, total_alloc, total_found; 2655 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD; 2656 boolean_t leaks = B_FALSE; 2657 2658 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n", 2659 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "", 2660 (dump_opt['c'] == 1) ? "metadata " : "", 2661 dump_opt['c'] ? "checksums " : "", 2662 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "", 2663 !dump_opt['L'] ? "nothing leaked " : ""); 2664 2665 /* 2666 * Load all space maps as SM_ALLOC maps, then traverse the pool 2667 * claiming each block we discover. If the pool is perfectly 2668 * consistent, the space maps will be empty when we're done. 2669 * Anything left over is a leak; any block we can't claim (because 2670 * it's not part of any space map) is a double allocation, 2671 * reference to a freed block, or an unclaimed log block. 2672 */ 2673 zdb_leak_init(spa, &zcb); 2674 2675 /* 2676 * If there's a deferred-free bplist, process that first. 2677 */ 2678 (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj, 2679 count_block_cb, &zcb, NULL); 2680 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 2681 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj, 2682 count_block_cb, &zcb, NULL); 2683 } 2684 if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) { 2685 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset, 2686 spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb, 2687 &zcb, NULL)); 2688 } 2689 2690 if (dump_opt['c'] > 1) 2691 flags |= TRAVERSE_PREFETCH_DATA; 2692 2693 zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa)); 2694 zcb.zcb_start = zcb.zcb_lastprint = gethrtime(); 2695 zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb); 2696 2697 /* 2698 * If we've traversed the data blocks then we need to wait for those 2699 * I/Os to complete. We leverage "The Godfather" zio to wait on 2700 * all async I/Os to complete. 2701 */ 2702 if (dump_opt['c']) { 2703 for (int i = 0; i < max_ncpus; i++) { 2704 (void) zio_wait(spa->spa_async_zio_root[i]); 2705 spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, 2706 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | 2707 ZIO_FLAG_GODFATHER); 2708 } 2709 } 2710 2711 if (zcb.zcb_haderrors) { 2712 (void) printf("\nError counts:\n\n"); 2713 (void) printf("\t%5s %s\n", "errno", "count"); 2714 for (int e = 0; e < 256; e++) { 2715 if (zcb.zcb_errors[e] != 0) { 2716 (void) printf("\t%5d %llu\n", 2717 e, (u_longlong_t)zcb.zcb_errors[e]); 2718 } 2719 } 2720 } 2721 2722 /* 2723 * Report any leaked segments. 2724 */ 2725 zdb_leak_fini(spa); 2726 2727 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL]; 2728 2729 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 2730 norm_space = metaslab_class_get_space(spa_normal_class(spa)); 2731 2732 total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa)); 2733 total_found = tzb->zb_asize - zcb.zcb_dedup_asize; 2734 2735 if (total_found == total_alloc) { 2736 if (!dump_opt['L']) 2737 (void) printf("\n\tNo leaks (block sum matches space" 2738 " maps exactly)\n"); 2739 } else { 2740 (void) printf("block traversal size %llu != alloc %llu " 2741 "(%s %lld)\n", 2742 (u_longlong_t)total_found, 2743 (u_longlong_t)total_alloc, 2744 (dump_opt['L']) ? "unreachable" : "leaked", 2745 (longlong_t)(total_alloc - total_found)); 2746 leaks = B_TRUE; 2747 } 2748 2749 if (tzb->zb_count == 0) 2750 return (2); 2751 2752 (void) printf("\n"); 2753 (void) printf("\tbp count: %10llu\n", 2754 (u_longlong_t)tzb->zb_count); 2755 (void) printf("\tganged count: %10llu\n", 2756 (longlong_t)tzb->zb_gangs); 2757 (void) printf("\tbp logical: %10llu avg: %6llu\n", 2758 (u_longlong_t)tzb->zb_lsize, 2759 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 2760 (void) printf("\tbp physical: %10llu avg:" 2761 " %6llu compression: %6.2f\n", 2762 (u_longlong_t)tzb->zb_psize, 2763 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 2764 (double)tzb->zb_lsize / tzb->zb_psize); 2765 (void) printf("\tbp allocated: %10llu avg:" 2766 " %6llu compression: %6.2f\n", 2767 (u_longlong_t)tzb->zb_asize, 2768 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 2769 (double)tzb->zb_lsize / tzb->zb_asize); 2770 (void) printf("\tbp deduped: %10llu ref>1:" 2771 " %6llu deduplication: %6.2f\n", 2772 (u_longlong_t)zcb.zcb_dedup_asize, 2773 (u_longlong_t)zcb.zcb_dedup_blocks, 2774 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0); 2775 (void) printf("\tSPA allocated: %10llu used: %5.2f%%\n", 2776 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space); 2777 2778 for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) { 2779 if (zcb.zcb_embedded_blocks[i] == 0) 2780 continue; 2781 (void) printf("\n"); 2782 (void) printf("\tadditional, non-pointer bps of type %u: " 2783 "%10llu\n", 2784 i, (u_longlong_t)zcb.zcb_embedded_blocks[i]); 2785 2786 if (dump_opt['b'] >= 3) { 2787 (void) printf("\t number of (compressed) bytes: " 2788 "number of bps\n"); 2789 dump_histogram(zcb.zcb_embedded_histogram[i], 2790 sizeof (zcb.zcb_embedded_histogram[i]) / 2791 sizeof (zcb.zcb_embedded_histogram[i][0]), 0); 2792 } 2793 } 2794 2795 if (tzb->zb_ditto_samevdev != 0) { 2796 (void) printf("\tDittoed blocks on same vdev: %llu\n", 2797 (longlong_t)tzb->zb_ditto_samevdev); 2798 } 2799 2800 if (dump_opt['b'] >= 2) { 2801 int l, t, level; 2802 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 2803 "\t avg\t comp\t%%Total\tType\n"); 2804 2805 for (t = 0; t <= ZDB_OT_TOTAL; t++) { 2806 char csize[32], lsize[32], psize[32], asize[32]; 2807 char avg[32], gang[32]; 2808 char *typename; 2809 2810 if (t < DMU_OT_NUMTYPES) 2811 typename = dmu_ot[t].ot_name; 2812 else 2813 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES]; 2814 2815 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 2816 (void) printf("%6s\t%5s\t%5s\t%5s" 2817 "\t%5s\t%5s\t%6s\t%s\n", 2818 "-", 2819 "-", 2820 "-", 2821 "-", 2822 "-", 2823 "-", 2824 "-", 2825 typename); 2826 continue; 2827 } 2828 2829 for (l = ZB_TOTAL - 1; l >= -1; l--) { 2830 level = (l == -1 ? ZB_TOTAL : l); 2831 zb = &zcb.zcb_type[level][t]; 2832 2833 if (zb->zb_asize == 0) 2834 continue; 2835 2836 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 2837 continue; 2838 2839 if (level == 0 && zb->zb_asize == 2840 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 2841 continue; 2842 2843 zdb_nicenum(zb->zb_count, csize); 2844 zdb_nicenum(zb->zb_lsize, lsize); 2845 zdb_nicenum(zb->zb_psize, psize); 2846 zdb_nicenum(zb->zb_asize, asize); 2847 zdb_nicenum(zb->zb_asize / zb->zb_count, avg); 2848 zdb_nicenum(zb->zb_gangs, gang); 2849 2850 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 2851 "\t%5.2f\t%6.2f\t", 2852 csize, lsize, psize, asize, avg, 2853 (double)zb->zb_lsize / zb->zb_psize, 2854 100.0 * zb->zb_asize / tzb->zb_asize); 2855 2856 if (level == ZB_TOTAL) 2857 (void) printf("%s\n", typename); 2858 else 2859 (void) printf(" L%d %s\n", 2860 level, typename); 2861 2862 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) { 2863 (void) printf("\t number of ganged " 2864 "blocks: %s\n", gang); 2865 } 2866 2867 if (dump_opt['b'] >= 4) { 2868 (void) printf("psize " 2869 "(in 512-byte sectors): " 2870 "number of blocks\n"); 2871 dump_histogram(zb->zb_psize_histogram, 2872 PSIZE_HISTO_SIZE, 0); 2873 } 2874 } 2875 } 2876 } 2877 2878 (void) printf("\n"); 2879 2880 if (leaks) 2881 return (2); 2882 2883 if (zcb.zcb_haderrors) 2884 return (3); 2885 2886 return (0); 2887 } 2888 2889 typedef struct zdb_ddt_entry { 2890 ddt_key_t zdde_key; 2891 uint64_t zdde_ref_blocks; 2892 uint64_t zdde_ref_lsize; 2893 uint64_t zdde_ref_psize; 2894 uint64_t zdde_ref_dsize; 2895 avl_node_t zdde_node; 2896 } zdb_ddt_entry_t; 2897 2898 /* ARGSUSED */ 2899 static int 2900 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2901 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 2902 { 2903 avl_tree_t *t = arg; 2904 avl_index_t where; 2905 zdb_ddt_entry_t *zdde, zdde_search; 2906 2907 if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp)) 2908 return (0); 2909 2910 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) { 2911 (void) printf("traversing objset %llu, %llu objects, " 2912 "%lu blocks so far\n", 2913 (u_longlong_t)zb->zb_objset, 2914 (u_longlong_t)BP_GET_FILL(bp), 2915 avl_numnodes(t)); 2916 } 2917 2918 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF || 2919 BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) 2920 return (0); 2921 2922 ddt_key_fill(&zdde_search.zdde_key, bp); 2923 2924 zdde = avl_find(t, &zdde_search, &where); 2925 2926 if (zdde == NULL) { 2927 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL); 2928 zdde->zdde_key = zdde_search.zdde_key; 2929 avl_insert(t, zdde, where); 2930 } 2931 2932 zdde->zdde_ref_blocks += 1; 2933 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp); 2934 zdde->zdde_ref_psize += BP_GET_PSIZE(bp); 2935 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp); 2936 2937 return (0); 2938 } 2939 2940 static void 2941 dump_simulated_ddt(spa_t *spa) 2942 { 2943 avl_tree_t t; 2944 void *cookie = NULL; 2945 zdb_ddt_entry_t *zdde; 2946 ddt_histogram_t ddh_total = { 0 }; 2947 ddt_stat_t dds_total = { 0 }; 2948 2949 avl_create(&t, ddt_entry_compare, 2950 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node)); 2951 2952 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2953 2954 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA, 2955 zdb_ddt_add_cb, &t); 2956 2957 spa_config_exit(spa, SCL_CONFIG, FTAG); 2958 2959 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) { 2960 ddt_stat_t dds; 2961 uint64_t refcnt = zdde->zdde_ref_blocks; 2962 ASSERT(refcnt != 0); 2963 2964 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt; 2965 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt; 2966 dds.dds_psize = zdde->zdde_ref_psize / refcnt; 2967 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt; 2968 2969 dds.dds_ref_blocks = zdde->zdde_ref_blocks; 2970 dds.dds_ref_lsize = zdde->zdde_ref_lsize; 2971 dds.dds_ref_psize = zdde->zdde_ref_psize; 2972 dds.dds_ref_dsize = zdde->zdde_ref_dsize; 2973 2974 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1], 2975 &dds, 0); 2976 2977 umem_free(zdde, sizeof (*zdde)); 2978 } 2979 2980 avl_destroy(&t); 2981 2982 ddt_histogram_stat(&dds_total, &ddh_total); 2983 2984 (void) printf("Simulated DDT histogram:\n"); 2985 2986 zpool_dump_ddt(&dds_total, &ddh_total); 2987 2988 dump_dedup_ratio(&dds_total); 2989 } 2990 2991 static void 2992 dump_zpool(spa_t *spa) 2993 { 2994 dsl_pool_t *dp = spa_get_dsl(spa); 2995 int rc = 0; 2996 2997 if (dump_opt['S']) { 2998 dump_simulated_ddt(spa); 2999 return; 3000 } 3001 3002 if (!dump_opt['e'] && dump_opt['C'] > 1) { 3003 (void) printf("\nCached configuration:\n"); 3004 dump_nvlist(spa->spa_config, 8); 3005 } 3006 3007 if (dump_opt['C']) 3008 dump_config(spa); 3009 3010 if (dump_opt['u']) 3011 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n"); 3012 3013 if (dump_opt['D']) 3014 dump_all_ddts(spa); 3015 3016 if (dump_opt['d'] > 2 || dump_opt['m']) 3017 dump_metaslabs(spa); 3018 if (dump_opt['M']) 3019 dump_metaslab_groups(spa); 3020 3021 if (dump_opt['d'] || dump_opt['i']) { 3022 dump_dir(dp->dp_meta_objset); 3023 if (dump_opt['d'] >= 3) { 3024 dump_full_bpobj(&spa->spa_deferred_bpobj, 3025 "Deferred frees", 0); 3026 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 3027 dump_full_bpobj( 3028 &spa->spa_dsl_pool->dp_free_bpobj, 3029 "Pool snapshot frees", 0); 3030 } 3031 3032 if (spa_feature_is_active(spa, 3033 SPA_FEATURE_ASYNC_DESTROY)) { 3034 dump_bptree(spa->spa_meta_objset, 3035 spa->spa_dsl_pool->dp_bptree_obj, 3036 "Pool dataset frees"); 3037 } 3038 dump_dtl(spa->spa_root_vdev, 0); 3039 } 3040 (void) dmu_objset_find(spa_name(spa), dump_one_dir, 3041 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 3042 3043 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 3044 uint64_t refcount; 3045 3046 if (!(spa_feature_table[f].fi_flags & 3047 ZFEATURE_FLAG_PER_DATASET)) { 3048 ASSERT0(dataset_feature_count[f]); 3049 continue; 3050 } 3051 (void) feature_get_refcount(spa, 3052 &spa_feature_table[f], &refcount); 3053 if (dataset_feature_count[f] != refcount) { 3054 (void) printf("%s feature refcount mismatch: " 3055 "%lld datasets != %lld refcount\n", 3056 spa_feature_table[f].fi_uname, 3057 (longlong_t)dataset_feature_count[f], 3058 (longlong_t)refcount); 3059 rc = 2; 3060 } else { 3061 (void) printf("Verified %s feature refcount " 3062 "of %llu is correct\n", 3063 spa_feature_table[f].fi_uname, 3064 (longlong_t)refcount); 3065 } 3066 } 3067 } 3068 if (rc == 0 && (dump_opt['b'] || dump_opt['c'])) 3069 rc = dump_block_stats(spa); 3070 3071 if (rc == 0) 3072 rc = verify_spacemap_refcounts(spa); 3073 3074 if (dump_opt['s']) 3075 show_pool_stats(spa); 3076 3077 if (dump_opt['h']) 3078 dump_history(spa); 3079 3080 if (rc != 0) 3081 exit(rc); 3082 } 3083 3084 #define ZDB_FLAG_CHECKSUM 0x0001 3085 #define ZDB_FLAG_DECOMPRESS 0x0002 3086 #define ZDB_FLAG_BSWAP 0x0004 3087 #define ZDB_FLAG_GBH 0x0008 3088 #define ZDB_FLAG_INDIRECT 0x0010 3089 #define ZDB_FLAG_PHYS 0x0020 3090 #define ZDB_FLAG_RAW 0x0040 3091 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 3092 3093 int flagbits[256]; 3094 3095 static void 3096 zdb_print_blkptr(blkptr_t *bp, int flags) 3097 { 3098 char blkbuf[BP_SPRINTF_LEN]; 3099 3100 if (flags & ZDB_FLAG_BSWAP) 3101 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 3102 3103 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3104 (void) printf("%s\n", blkbuf); 3105 } 3106 3107 static void 3108 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 3109 { 3110 int i; 3111 3112 for (i = 0; i < nbps; i++) 3113 zdb_print_blkptr(&bp[i], flags); 3114 } 3115 3116 static void 3117 zdb_dump_gbh(void *buf, int flags) 3118 { 3119 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 3120 } 3121 3122 static void 3123 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 3124 { 3125 if (flags & ZDB_FLAG_BSWAP) 3126 byteswap_uint64_array(buf, size); 3127 (void) write(1, buf, size); 3128 } 3129 3130 static void 3131 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 3132 { 3133 uint64_t *d = (uint64_t *)buf; 3134 int nwords = size / sizeof (uint64_t); 3135 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 3136 int i, j; 3137 char *hdr, *c; 3138 3139 3140 if (do_bswap) 3141 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 3142 else 3143 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 3144 3145 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 3146 3147 for (i = 0; i < nwords; i += 2) { 3148 (void) printf("%06llx: %016llx %016llx ", 3149 (u_longlong_t)(i * sizeof (uint64_t)), 3150 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 3151 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 3152 3153 c = (char *)&d[i]; 3154 for (j = 0; j < 2 * sizeof (uint64_t); j++) 3155 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 3156 (void) printf("\n"); 3157 } 3158 } 3159 3160 /* 3161 * There are two acceptable formats: 3162 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 3163 * child[.child]* - For example: 0.1.1 3164 * 3165 * The second form can be used to specify arbitrary vdevs anywhere 3166 * in the heirarchy. For example, in a pool with a mirror of 3167 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 3168 */ 3169 static vdev_t * 3170 zdb_vdev_lookup(vdev_t *vdev, char *path) 3171 { 3172 char *s, *p, *q; 3173 int i; 3174 3175 if (vdev == NULL) 3176 return (NULL); 3177 3178 /* First, assume the x.x.x.x format */ 3179 i = (int)strtoul(path, &s, 10); 3180 if (s == path || (s && *s != '.' && *s != '\0')) 3181 goto name; 3182 if (i < 0 || i >= vdev->vdev_children) 3183 return (NULL); 3184 3185 vdev = vdev->vdev_child[i]; 3186 if (*s == '\0') 3187 return (vdev); 3188 return (zdb_vdev_lookup(vdev, s+1)); 3189 3190 name: 3191 for (i = 0; i < vdev->vdev_children; i++) { 3192 vdev_t *vc = vdev->vdev_child[i]; 3193 3194 if (vc->vdev_path == NULL) { 3195 vc = zdb_vdev_lookup(vc, path); 3196 if (vc == NULL) 3197 continue; 3198 else 3199 return (vc); 3200 } 3201 3202 p = strrchr(vc->vdev_path, '/'); 3203 p = p ? p + 1 : vc->vdev_path; 3204 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 3205 3206 if (strcmp(vc->vdev_path, path) == 0) 3207 return (vc); 3208 if (strcmp(p, path) == 0) 3209 return (vc); 3210 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 3211 return (vc); 3212 } 3213 3214 return (NULL); 3215 } 3216 3217 /* 3218 * Read a block from a pool and print it out. The syntax of the 3219 * block descriptor is: 3220 * 3221 * pool:vdev_specifier:offset:size[:flags] 3222 * 3223 * pool - The name of the pool you wish to read from 3224 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 3225 * offset - offset, in hex, in bytes 3226 * size - Amount of data to read, in hex, in bytes 3227 * flags - A string of characters specifying options 3228 * b: Decode a blkptr at given offset within block 3229 * *c: Calculate and display checksums 3230 * d: Decompress data before dumping 3231 * e: Byteswap data before dumping 3232 * g: Display data as a gang block header 3233 * i: Display as an indirect block 3234 * p: Do I/O to physical offset 3235 * r: Dump raw data to stdout 3236 * 3237 * * = not yet implemented 3238 */ 3239 static void 3240 zdb_read_block(char *thing, spa_t *spa) 3241 { 3242 blkptr_t blk, *bp = &blk; 3243 dva_t *dva = bp->blk_dva; 3244 int flags = 0; 3245 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0; 3246 zio_t *zio; 3247 vdev_t *vd; 3248 void *pbuf, *lbuf, *buf; 3249 char *s, *p, *dup, *vdev, *flagstr; 3250 int i, error; 3251 3252 dup = strdup(thing); 3253 s = strtok(dup, ":"); 3254 vdev = s ? s : ""; 3255 s = strtok(NULL, ":"); 3256 offset = strtoull(s ? s : "", NULL, 16); 3257 s = strtok(NULL, ":"); 3258 size = strtoull(s ? s : "", NULL, 16); 3259 s = strtok(NULL, ":"); 3260 flagstr = s ? s : ""; 3261 3262 s = NULL; 3263 if (size == 0) 3264 s = "size must not be zero"; 3265 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 3266 s = "size must be a multiple of sector size"; 3267 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 3268 s = "offset must be a multiple of sector size"; 3269 if (s) { 3270 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 3271 free(dup); 3272 return; 3273 } 3274 3275 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 3276 for (i = 0; flagstr[i]; i++) { 3277 int bit = flagbits[(uchar_t)flagstr[i]]; 3278 3279 if (bit == 0) { 3280 (void) printf("***Invalid flag: %c\n", 3281 flagstr[i]); 3282 continue; 3283 } 3284 flags |= bit; 3285 3286 /* If it's not something with an argument, keep going */ 3287 if ((bit & (ZDB_FLAG_CHECKSUM | 3288 ZDB_FLAG_PRINT_BLKPTR)) == 0) 3289 continue; 3290 3291 p = &flagstr[i + 1]; 3292 if (bit == ZDB_FLAG_PRINT_BLKPTR) 3293 blkptr_offset = strtoull(p, &p, 16); 3294 if (*p != ':' && *p != '\0') { 3295 (void) printf("***Invalid flag arg: '%s'\n", s); 3296 free(dup); 3297 return; 3298 } 3299 } 3300 } 3301 3302 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 3303 if (vd == NULL) { 3304 (void) printf("***Invalid vdev: %s\n", vdev); 3305 free(dup); 3306 return; 3307 } else { 3308 if (vd->vdev_path) 3309 (void) fprintf(stderr, "Found vdev: %s\n", 3310 vd->vdev_path); 3311 else 3312 (void) fprintf(stderr, "Found vdev type: %s\n", 3313 vd->vdev_ops->vdev_op_type); 3314 } 3315 3316 psize = size; 3317 lsize = size; 3318 3319 pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3320 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3321 3322 BP_ZERO(bp); 3323 3324 DVA_SET_VDEV(&dva[0], vd->vdev_id); 3325 DVA_SET_OFFSET(&dva[0], offset); 3326 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH)); 3327 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize)); 3328 3329 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL); 3330 3331 BP_SET_LSIZE(bp, lsize); 3332 BP_SET_PSIZE(bp, psize); 3333 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF); 3334 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF); 3335 BP_SET_TYPE(bp, DMU_OT_NONE); 3336 BP_SET_LEVEL(bp, 0); 3337 BP_SET_DEDUP(bp, 0); 3338 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER); 3339 3340 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 3341 zio = zio_root(spa, NULL, NULL, 0); 3342 3343 if (vd == vd->vdev_top) { 3344 /* 3345 * Treat this as a normal block read. 3346 */ 3347 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL, 3348 ZIO_PRIORITY_SYNC_READ, 3349 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL)); 3350 } else { 3351 /* 3352 * Treat this as a vdev child I/O. 3353 */ 3354 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize, 3355 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, 3356 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 3357 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | 3358 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL)); 3359 } 3360 3361 error = zio_wait(zio); 3362 spa_config_exit(spa, SCL_STATE, FTAG); 3363 3364 if (error) { 3365 (void) printf("Read of %s failed, error: %d\n", thing, error); 3366 goto out; 3367 } 3368 3369 if (flags & ZDB_FLAG_DECOMPRESS) { 3370 /* 3371 * We don't know how the data was compressed, so just try 3372 * every decompress function at every inflated blocksize. 3373 */ 3374 enum zio_compress c; 3375 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3376 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3377 3378 bcopy(pbuf, pbuf2, psize); 3379 3380 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize, 3381 SPA_MAXBLOCKSIZE - psize) == 0); 3382 3383 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize, 3384 SPA_MAXBLOCKSIZE - psize) == 0); 3385 3386 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize; 3387 lsize -= SPA_MINBLOCKSIZE) { 3388 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) { 3389 if (zio_decompress_data(c, pbuf, lbuf, 3390 psize, lsize) == 0 && 3391 zio_decompress_data(c, pbuf2, lbuf2, 3392 psize, lsize) == 0 && 3393 bcmp(lbuf, lbuf2, lsize) == 0) 3394 break; 3395 } 3396 if (c != ZIO_COMPRESS_FUNCTIONS) 3397 break; 3398 lsize -= SPA_MINBLOCKSIZE; 3399 } 3400 3401 umem_free(pbuf2, SPA_MAXBLOCKSIZE); 3402 umem_free(lbuf2, SPA_MAXBLOCKSIZE); 3403 3404 if (lsize <= psize) { 3405 (void) printf("Decompress of %s failed\n", thing); 3406 goto out; 3407 } 3408 buf = lbuf; 3409 size = lsize; 3410 } else { 3411 buf = pbuf; 3412 size = psize; 3413 } 3414 3415 if (flags & ZDB_FLAG_PRINT_BLKPTR) 3416 zdb_print_blkptr((blkptr_t *)(void *) 3417 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 3418 else if (flags & ZDB_FLAG_RAW) 3419 zdb_dump_block_raw(buf, size, flags); 3420 else if (flags & ZDB_FLAG_INDIRECT) 3421 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 3422 flags); 3423 else if (flags & ZDB_FLAG_GBH) 3424 zdb_dump_gbh(buf, flags); 3425 else 3426 zdb_dump_block(thing, buf, size, flags); 3427 3428 out: 3429 umem_free(pbuf, SPA_MAXBLOCKSIZE); 3430 umem_free(lbuf, SPA_MAXBLOCKSIZE); 3431 free(dup); 3432 } 3433 3434 static boolean_t 3435 pool_match(nvlist_t *cfg, char *tgt) 3436 { 3437 uint64_t v, guid = strtoull(tgt, NULL, 0); 3438 char *s; 3439 3440 if (guid != 0) { 3441 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0) 3442 return (v == guid); 3443 } else { 3444 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0) 3445 return (strcmp(s, tgt) == 0); 3446 } 3447 return (B_FALSE); 3448 } 3449 3450 static char * 3451 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv) 3452 { 3453 nvlist_t *pools; 3454 nvlist_t *match = NULL; 3455 char *name = NULL; 3456 char *sepp = NULL; 3457 char sep = '\0'; 3458 int count = 0; 3459 importargs_t args = { 0 }; 3460 3461 args.paths = dirc; 3462 args.path = dirv; 3463 args.can_be_active = B_TRUE; 3464 3465 if ((sepp = strpbrk(*target, "/@")) != NULL) { 3466 sep = *sepp; 3467 *sepp = '\0'; 3468 } 3469 3470 pools = zpool_search_import(g_zfs, &args); 3471 3472 if (pools != NULL) { 3473 nvpair_t *elem = NULL; 3474 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) { 3475 verify(nvpair_value_nvlist(elem, configp) == 0); 3476 if (pool_match(*configp, *target)) { 3477 count++; 3478 if (match != NULL) { 3479 /* print previously found config */ 3480 if (name != NULL) { 3481 (void) printf("%s\n", name); 3482 dump_nvlist(match, 8); 3483 name = NULL; 3484 } 3485 (void) printf("%s\n", 3486 nvpair_name(elem)); 3487 dump_nvlist(*configp, 8); 3488 } else { 3489 match = *configp; 3490 name = nvpair_name(elem); 3491 } 3492 } 3493 } 3494 } 3495 if (count > 1) 3496 (void) fatal("\tMatched %d pools - use pool GUID " 3497 "instead of pool name or \n" 3498 "\tpool name part of a dataset name to select pool", count); 3499 3500 if (sepp) 3501 *sepp = sep; 3502 /* 3503 * If pool GUID was specified for pool id, replace it with pool name 3504 */ 3505 if (name && (strstr(*target, name) != *target)) { 3506 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0); 3507 3508 *target = umem_alloc(sz, UMEM_NOFAIL); 3509 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : ""); 3510 } 3511 3512 *configp = name ? match : NULL; 3513 3514 return (name); 3515 } 3516 3517 int 3518 main(int argc, char **argv) 3519 { 3520 int i, c; 3521 struct rlimit rl = { 1024, 1024 }; 3522 spa_t *spa = NULL; 3523 objset_t *os = NULL; 3524 int dump_all = 1; 3525 int verbose = 0; 3526 int error = 0; 3527 char **searchdirs = NULL; 3528 int nsearch = 0; 3529 char *target; 3530 nvlist_t *policy = NULL; 3531 uint64_t max_txg = UINT64_MAX; 3532 int rewind = ZPOOL_NEVER_REWIND; 3533 char *spa_config_path_env; 3534 3535 (void) setrlimit(RLIMIT_NOFILE, &rl); 3536 (void) enable_extended_FILE_stdio(-1, -1); 3537 3538 dprintf_setup(&argc, argv); 3539 3540 /* 3541 * If there is an environment variable SPA_CONFIG_PATH it overrides 3542 * default spa_config_path setting. If -U flag is specified it will 3543 * override this environment variable settings once again. 3544 */ 3545 spa_config_path_env = getenv("SPA_CONFIG_PATH"); 3546 if (spa_config_path_env != NULL) 3547 spa_config_path = spa_config_path_env; 3548 3549 while ((c = getopt(argc, argv, 3550 "bcdhilmMI:suCDRSAFLXx:evp:t:U:P")) != -1) { 3551 switch (c) { 3552 case 'b': 3553 case 'c': 3554 case 'd': 3555 case 'h': 3556 case 'i': 3557 case 'l': 3558 case 'm': 3559 case 's': 3560 case 'u': 3561 case 'C': 3562 case 'D': 3563 case 'M': 3564 case 'R': 3565 case 'S': 3566 dump_opt[c]++; 3567 dump_all = 0; 3568 break; 3569 case 'A': 3570 case 'F': 3571 case 'L': 3572 case 'X': 3573 case 'e': 3574 case 'P': 3575 dump_opt[c]++; 3576 break; 3577 case 'I': 3578 max_inflight = strtoull(optarg, NULL, 0); 3579 if (max_inflight == 0) { 3580 (void) fprintf(stderr, "maximum number " 3581 "of inflight I/Os must be greater " 3582 "than 0\n"); 3583 usage(); 3584 } 3585 break; 3586 case 'p': 3587 if (searchdirs == NULL) { 3588 searchdirs = umem_alloc(sizeof (char *), 3589 UMEM_NOFAIL); 3590 } else { 3591 char **tmp = umem_alloc((nsearch + 1) * 3592 sizeof (char *), UMEM_NOFAIL); 3593 bcopy(searchdirs, tmp, nsearch * 3594 sizeof (char *)); 3595 umem_free(searchdirs, 3596 nsearch * sizeof (char *)); 3597 searchdirs = tmp; 3598 } 3599 searchdirs[nsearch++] = optarg; 3600 break; 3601 case 't': 3602 max_txg = strtoull(optarg, NULL, 0); 3603 if (max_txg < TXG_INITIAL) { 3604 (void) fprintf(stderr, "incorrect txg " 3605 "specified: %s\n", optarg); 3606 usage(); 3607 } 3608 break; 3609 case 'U': 3610 spa_config_path = optarg; 3611 break; 3612 case 'v': 3613 verbose++; 3614 break; 3615 case 'x': 3616 vn_dumpdir = optarg; 3617 break; 3618 default: 3619 usage(); 3620 break; 3621 } 3622 } 3623 3624 if (!dump_opt['e'] && searchdirs != NULL) { 3625 (void) fprintf(stderr, "-p option requires use of -e\n"); 3626 usage(); 3627 } 3628 3629 /* 3630 * ZDB does not typically re-read blocks; therefore limit the ARC 3631 * to 256 MB, which can be used entirely for metadata. 3632 */ 3633 zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024; 3634 3635 /* 3636 * "zdb -c" uses checksum-verifying scrub i/os which are async reads. 3637 * "zdb -b" uses traversal prefetch which uses async reads. 3638 * For good performance, let several of them be active at once. 3639 */ 3640 zfs_vdev_async_read_max_active = 10; 3641 3642 kernel_init(FREAD); 3643 g_zfs = libzfs_init(); 3644 ASSERT(g_zfs != NULL); 3645 3646 if (dump_all) 3647 verbose = MAX(verbose, 1); 3648 3649 for (c = 0; c < 256; c++) { 3650 if (dump_all && !strchr("elAFLRSXP", c)) 3651 dump_opt[c] = 1; 3652 if (dump_opt[c]) 3653 dump_opt[c] += verbose; 3654 } 3655 3656 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2); 3657 zfs_recover = (dump_opt['A'] > 1); 3658 3659 argc -= optind; 3660 argv += optind; 3661 3662 if (argc < 2 && dump_opt['R']) 3663 usage(); 3664 if (argc < 1) { 3665 if (!dump_opt['e'] && dump_opt['C']) { 3666 dump_cachefile(spa_config_path); 3667 return (0); 3668 } 3669 usage(); 3670 } 3671 3672 if (dump_opt['l']) { 3673 dump_label(argv[0]); 3674 return (0); 3675 } 3676 3677 if (dump_opt['X'] || dump_opt['F']) 3678 rewind = ZPOOL_DO_REWIND | 3679 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0); 3680 3681 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 || 3682 nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 || 3683 nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0) 3684 fatal("internal error: %s", strerror(ENOMEM)); 3685 3686 error = 0; 3687 target = argv[0]; 3688 3689 if (dump_opt['e']) { 3690 nvlist_t *cfg = NULL; 3691 char *name = find_zpool(&target, &cfg, nsearch, searchdirs); 3692 3693 error = ENOENT; 3694 if (name) { 3695 if (dump_opt['C'] > 1) { 3696 (void) printf("\nConfiguration for import:\n"); 3697 dump_nvlist(cfg, 8); 3698 } 3699 if (nvlist_add_nvlist(cfg, 3700 ZPOOL_REWIND_POLICY, policy) != 0) { 3701 fatal("can't open '%s': %s", 3702 target, strerror(ENOMEM)); 3703 } 3704 if ((error = spa_import(name, cfg, NULL, 3705 ZFS_IMPORT_MISSING_LOG)) != 0) { 3706 error = spa_import(name, cfg, NULL, 3707 ZFS_IMPORT_VERBATIM); 3708 } 3709 } 3710 } 3711 3712 if (error == 0) { 3713 if (strpbrk(target, "/@") == NULL || dump_opt['R']) { 3714 error = spa_open_rewind(target, &spa, FTAG, policy, 3715 NULL); 3716 if (error) { 3717 /* 3718 * If we're missing the log device then 3719 * try opening the pool after clearing the 3720 * log state. 3721 */ 3722 mutex_enter(&spa_namespace_lock); 3723 if ((spa = spa_lookup(target)) != NULL && 3724 spa->spa_log_state == SPA_LOG_MISSING) { 3725 spa->spa_log_state = SPA_LOG_CLEAR; 3726 error = 0; 3727 } 3728 mutex_exit(&spa_namespace_lock); 3729 3730 if (!error) { 3731 error = spa_open_rewind(target, &spa, 3732 FTAG, policy, NULL); 3733 } 3734 } 3735 } else { 3736 error = dmu_objset_own(target, DMU_OST_ANY, 3737 B_TRUE, FTAG, &os); 3738 } 3739 } 3740 nvlist_free(policy); 3741 3742 if (error) 3743 fatal("can't open '%s': %s", target, strerror(error)); 3744 3745 argv++; 3746 argc--; 3747 if (!dump_opt['R']) { 3748 if (argc > 0) { 3749 zopt_objects = argc; 3750 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 3751 for (i = 0; i < zopt_objects; i++) { 3752 errno = 0; 3753 zopt_object[i] = strtoull(argv[i], NULL, 0); 3754 if (zopt_object[i] == 0 && errno != 0) 3755 fatal("bad number %s: %s", 3756 argv[i], strerror(errno)); 3757 } 3758 } 3759 if (os != NULL) { 3760 dump_dir(os); 3761 } else if (zopt_objects > 0 && !dump_opt['m']) { 3762 dump_dir(spa->spa_meta_objset); 3763 } else { 3764 dump_zpool(spa); 3765 } 3766 } else { 3767 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 3768 flagbits['c'] = ZDB_FLAG_CHECKSUM; 3769 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 3770 flagbits['e'] = ZDB_FLAG_BSWAP; 3771 flagbits['g'] = ZDB_FLAG_GBH; 3772 flagbits['i'] = ZDB_FLAG_INDIRECT; 3773 flagbits['p'] = ZDB_FLAG_PHYS; 3774 flagbits['r'] = ZDB_FLAG_RAW; 3775 3776 for (i = 0; i < argc; i++) 3777 zdb_read_block(argv[i], spa); 3778 } 3779 3780 (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG); 3781 3782 fuid_table_destroy(); 3783 sa_loaded = B_FALSE; 3784 3785 libzfs_fini(g_zfs); 3786 kernel_fini(); 3787 3788 return (0); 3789 } 3790