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, 2019 by Delphix. All rights reserved. 25 * Copyright (c) 2014 Integros [integros.com] 26 * Copyright 2017 Nexenta Systems, Inc. 27 * Copyright (c) 2017, 2018 Lawrence Livermore National Security, LLC. 28 * Copyright 2017 RackTop Systems. 29 * Copyright 2026 Edgecast Cloud LLC. 30 */ 31 32 #include <stdio.h> 33 #include <unistd.h> 34 #include <stdio_ext.h> 35 #include <stdlib.h> 36 #include <ctype.h> 37 #include <sys/zfs_context.h> 38 #include <sys/spa.h> 39 #include <sys/spa_impl.h> 40 #include <sys/dmu.h> 41 #include <sys/zap.h> 42 #include <sys/fs/zfs.h> 43 #include <sys/zfs_znode.h> 44 #include <sys/zfs_sa.h> 45 #include <sys/sa.h> 46 #include <sys/sa_impl.h> 47 #include <sys/vdev.h> 48 #include <sys/vdev_impl.h> 49 #include <sys/metaslab_impl.h> 50 #include <sys/dmu_objset.h> 51 #include <sys/dsl_dir.h> 52 #include <sys/dsl_dataset.h> 53 #include <sys/dsl_pool.h> 54 #include <sys/dbuf.h> 55 #include <sys/zil.h> 56 #include <sys/zil_impl.h> 57 #include <sys/stat.h> 58 #include <sys/resource.h> 59 #include <sys/dmu_traverse.h> 60 #include <sys/zio_checksum.h> 61 #include <sys/zio_compress.h> 62 #include <zfs_fletcher.h> 63 #include <sys/zfs_fuid.h> 64 #include <sys/arc.h> 65 #include <sys/arc_impl.h> 66 #include <sys/ddt.h> 67 #include <sys/zfeature.h> 68 #include <sys/abd.h> 69 #include <sys/blkptr.h> 70 #include <sys/dsl_scan.h> 71 #include <sys/dsl_crypt.h> 72 #include <zfs_comutil.h> 73 #include <libcmdutils.h> 74 #undef verify 75 #include <libzfs.h> 76 77 #include <libnvpair.h> 78 #include <libzutil.h> 79 80 #include "zdb.h" 81 82 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \ 83 zio_compress_table[(idx)].ci_name : "UNKNOWN") 84 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \ 85 zio_checksum_table[(idx)].ci_name : "UNKNOWN") 86 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \ 87 dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ? \ 88 dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN") 89 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : \ 90 (idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA ? \ 91 DMU_OT_ZAP_OTHER : \ 92 (idx) == DMU_OTN_UINT64_DATA || (idx) == DMU_OTN_UINT64_METADATA ? \ 93 DMU_OT_UINT64_OTHER : DMU_OT_NUMTYPES) 94 95 extern int reference_tracking_enable; 96 extern boolean_t zfs_recover; 97 extern uint64_t zfs_arc_max, zfs_arc_meta_limit; 98 extern int zfs_vdev_async_read_max_active; 99 extern int aok; 100 extern boolean_t spa_load_verify_dryrun; 101 extern int zfs_btree_verify_intensity; 102 103 static const char cmdname[] = "zdb"; 104 uint8_t dump_opt[256]; 105 106 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); 107 108 uint64_t *zopt_object = NULL; 109 static unsigned zopt_objects = 0; 110 uint64_t max_inflight = 1000; 111 static int leaked_objects = 0; 112 113 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *); 114 static void mos_obj_refd(uint64_t); 115 116 /* 117 * These libumem hooks provide a reasonable set of defaults for the allocator's 118 * debugging facilities. 119 */ 120 const char * 121 _umem_debug_init() 122 { 123 return ("default,verbose"); /* $UMEM_DEBUG setting */ 124 } 125 126 const char * 127 _umem_logging_init(void) 128 { 129 return ("fail,contents"); /* $UMEM_LOGGING setting */ 130 } 131 132 static void 133 usage(void) 134 { 135 (void) fprintf(stderr, 136 "Usage:\t%s [-AbcdDFGhikLMPsvX] [-e [-V] [-p <path> ...]] " 137 "[-I <inflight I/Os>]\n" 138 "\t\t[-o <var>=<value>]... [-t <txg>] [-U <cache>] [-x <dumpdir>]\n" 139 "\t\t[<poolname> [<object> ...]]\n" 140 "\t%s [-AdiPv] [-e [-V] [-p <path> ...]] [-U <cache>] <dataset> " 141 "[<object> ...]\n" 142 "\t%s -C [-A] [-U <cache>]\n" 143 "\t%s -l [-Aqu] <device>\n" 144 "\t%s -m [-AFLPX] [-e [-V] [-p <path> ...]] [-t <txg>] " 145 "[-U <cache>]\n\t\t<poolname> [<vdev> [<metaslab> ...]]\n" 146 "\t%s -O <dataset> <path>\n" 147 "\t%s -R [-A] [-e [-V] [-p <path> ...]] [-U <cache>]\n" 148 "\t\t<poolname> <vdev>:<offset>:<size>[:<flags>]\n" 149 "\t%s -E [-A] word0:word1:...:word15\n" 150 "\t%s -S [-AP] [-e [-V] [-p <path> ...]] [-U <cache>] " 151 "<poolname>\n\n", 152 cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, 153 cmdname, cmdname); 154 155 (void) fprintf(stderr, " Dataset name must include at least one " 156 "separator character '/' or '@'\n"); 157 (void) fprintf(stderr, " If dataset name is specified, only that " 158 "dataset is dumped\n"); 159 (void) fprintf(stderr, " If object numbers are specified, only " 160 "those objects are dumped\n\n"); 161 (void) fprintf(stderr, " Options to control amount of output:\n"); 162 (void) fprintf(stderr, " -b block statistics\n"); 163 (void) fprintf(stderr, " -c checksum all metadata (twice for " 164 "all data) blocks\n"); 165 (void) fprintf(stderr, " -C config (or cachefile if alone)\n"); 166 (void) fprintf(stderr, " -d dataset(s)\n"); 167 (void) fprintf(stderr, " -D dedup statistics\n"); 168 (void) fprintf(stderr, " -E decode and display block from an " 169 "embedded block pointer\n"); 170 (void) fprintf(stderr, " -h pool history\n"); 171 (void) fprintf(stderr, " -i intent logs\n"); 172 (void) fprintf(stderr, " -l read label contents\n"); 173 (void) fprintf(stderr, " -k examine the checkpointed state " 174 "of the pool\n"); 175 (void) fprintf(stderr, " -L disable leak tracking (do not " 176 "load spacemaps)\n"); 177 (void) fprintf(stderr, " -m metaslabs\n"); 178 (void) fprintf(stderr, " -M metaslab groups\n"); 179 (void) fprintf(stderr, " -O perform object lookups by path\n"); 180 (void) fprintf(stderr, " -R read and display block from a " 181 "device\n"); 182 (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); 183 (void) fprintf(stderr, " -S simulate dedup to measure effect\n"); 184 (void) fprintf(stderr, " -v verbose (applies to all " 185 "others)\n\n"); 186 (void) fprintf(stderr, " Below options are intended for use " 187 "with other options:\n"); 188 (void) fprintf(stderr, " -A ignore assertions (-A), enable " 189 "panic recovery (-AA) or both (-AAA)\n"); 190 (void) fprintf(stderr, " -e pool is exported/destroyed/" 191 "has altroot/not in a cachefile\n"); 192 (void) fprintf(stderr, " -F attempt automatic rewind within " 193 "safe range of transaction groups\n"); 194 (void) fprintf(stderr, " -G dump zfs_dbgmsg buffer before " 195 "exiting\n"); 196 (void) fprintf(stderr, " -I <number of inflight I/Os> -- " 197 "specify the maximum number of " 198 "checksumming I/Os [default is 200]\n"); 199 (void) fprintf(stderr, " -o <variable>=<value> set global " 200 "variable to an unsigned 32-bit integer value\n"); 201 (void) fprintf(stderr, " -p <path> -- use one or more with " 202 "-e to specify path to vdev dir\n"); 203 (void) fprintf(stderr, " -P print numbers in parseable form\n"); 204 (void) fprintf(stderr, " -q don't print label contents\n"); 205 (void) fprintf(stderr, " -t <txg> -- highest txg to use when " 206 "searching for uberblocks\n"); 207 (void) fprintf(stderr, " -u uberblock\n"); 208 (void) fprintf(stderr, " -U <cachefile_path> -- use alternate " 209 "cachefile\n"); 210 (void) fprintf(stderr, " -V do verbatim import\n"); 211 (void) fprintf(stderr, " -x <dumpdir> -- " 212 "dump all read blocks into specified directory\n"); 213 (void) fprintf(stderr, " -X attempt extreme rewind (does not " 214 "work with dataset)\n\n"); 215 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " 216 "to make only that option verbose\n"); 217 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); 218 exit(1); 219 } 220 221 static void 222 dump_debug_buffer() 223 { 224 if (dump_opt['G']) { 225 (void) printf("\n"); 226 zfs_dbgmsg_print("zdb"); 227 } 228 } 229 230 /* 231 * Called for usage errors that are discovered after a call to spa_open(), 232 * dmu_bonus_hold(), or pool_match(). abort() is called for other errors. 233 */ 234 235 static void 236 fatal(const char *fmt, ...) 237 { 238 va_list ap; 239 240 va_start(ap, fmt); 241 (void) fprintf(stderr, "%s: ", cmdname); 242 (void) vfprintf(stderr, fmt, ap); 243 va_end(ap); 244 (void) fprintf(stderr, "\n"); 245 246 dump_debug_buffer(); 247 248 exit(1); 249 } 250 251 /* ARGSUSED */ 252 static void 253 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) 254 { 255 nvlist_t *nv; 256 size_t nvsize = *(uint64_t *)data; 257 char *packed = umem_alloc(nvsize, UMEM_NOFAIL); 258 259 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH)); 260 261 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); 262 263 umem_free(packed, nvsize); 264 265 dump_nvlist(nv, 8); 266 267 nvlist_free(nv); 268 } 269 270 /* ARGSUSED */ 271 static void 272 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size) 273 { 274 spa_history_phys_t *shp = data; 275 276 if (shp == NULL) 277 return; 278 279 (void) printf("\t\tpool_create_len = %llu\n", 280 (u_longlong_t)shp->sh_pool_create_len); 281 (void) printf("\t\tphys_max_off = %llu\n", 282 (u_longlong_t)shp->sh_phys_max_off); 283 (void) printf("\t\tbof = %llu\n", 284 (u_longlong_t)shp->sh_bof); 285 (void) printf("\t\teof = %llu\n", 286 (u_longlong_t)shp->sh_eof); 287 (void) printf("\t\trecords_lost = %llu\n", 288 (u_longlong_t)shp->sh_records_lost); 289 } 290 291 static void 292 zdb_nicenum(uint64_t num, char *buf, size_t buflen) 293 { 294 if (dump_opt['P']) 295 (void) snprintf(buf, buflen, "%llu", (longlong_t)num); 296 else 297 nicenum(num, buf, sizeof (buf)); 298 } 299 300 static const char histo_stars[] = "****************************************"; 301 static const uint64_t histo_width = sizeof (histo_stars) - 1; 302 303 static void 304 dump_histogram(const uint64_t *histo, int size, int offset) 305 { 306 int i; 307 int minidx = size - 1; 308 int maxidx = 0; 309 uint64_t max = 0; 310 311 for (i = 0; i < size; i++) { 312 if (histo[i] > max) 313 max = histo[i]; 314 if (histo[i] > 0 && i > maxidx) 315 maxidx = i; 316 if (histo[i] > 0 && i < minidx) 317 minidx = i; 318 } 319 320 if (max < histo_width) 321 max = histo_width; 322 323 for (i = minidx; i <= maxidx; i++) { 324 (void) printf("\t\t\t%3u: %6llu %s\n", 325 i + offset, (u_longlong_t)histo[i], 326 &histo_stars[(max - histo[i]) * histo_width / max]); 327 } 328 } 329 330 static void 331 dump_zap_stats(objset_t *os, uint64_t object) 332 { 333 int error; 334 zap_stats_t zs; 335 336 error = zap_get_stats(os, object, &zs); 337 if (error) 338 return; 339 340 if (zs.zs_ptrtbl_len == 0) { 341 ASSERT(zs.zs_num_blocks == 1); 342 (void) printf("\tmicrozap: %llu bytes, %llu entries\n", 343 (u_longlong_t)zs.zs_blocksize, 344 (u_longlong_t)zs.zs_num_entries); 345 return; 346 } 347 348 (void) printf("\tFat ZAP stats:\n"); 349 350 (void) printf("\t\tPointer table:\n"); 351 (void) printf("\t\t\t%llu elements\n", 352 (u_longlong_t)zs.zs_ptrtbl_len); 353 (void) printf("\t\t\tzt_blk: %llu\n", 354 (u_longlong_t)zs.zs_ptrtbl_zt_blk); 355 (void) printf("\t\t\tzt_numblks: %llu\n", 356 (u_longlong_t)zs.zs_ptrtbl_zt_numblks); 357 (void) printf("\t\t\tzt_shift: %llu\n", 358 (u_longlong_t)zs.zs_ptrtbl_zt_shift); 359 (void) printf("\t\t\tzt_blks_copied: %llu\n", 360 (u_longlong_t)zs.zs_ptrtbl_blks_copied); 361 (void) printf("\t\t\tzt_nextblk: %llu\n", 362 (u_longlong_t)zs.zs_ptrtbl_nextblk); 363 364 (void) printf("\t\tZAP entries: %llu\n", 365 (u_longlong_t)zs.zs_num_entries); 366 (void) printf("\t\tLeaf blocks: %llu\n", 367 (u_longlong_t)zs.zs_num_leafs); 368 (void) printf("\t\tTotal blocks: %llu\n", 369 (u_longlong_t)zs.zs_num_blocks); 370 (void) printf("\t\tzap_block_type: 0x%llx\n", 371 (u_longlong_t)zs.zs_block_type); 372 (void) printf("\t\tzap_magic: 0x%llx\n", 373 (u_longlong_t)zs.zs_magic); 374 (void) printf("\t\tzap_salt: 0x%llx\n", 375 (u_longlong_t)zs.zs_salt); 376 377 (void) printf("\t\tLeafs with 2^n pointers:\n"); 378 dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0); 379 380 (void) printf("\t\tBlocks with n*5 entries:\n"); 381 dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0); 382 383 (void) printf("\t\tBlocks n/10 full:\n"); 384 dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0); 385 386 (void) printf("\t\tEntries with n chunks:\n"); 387 dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0); 388 389 (void) printf("\t\tBuckets with n entries:\n"); 390 dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0); 391 } 392 393 /*ARGSUSED*/ 394 static void 395 dump_none(objset_t *os, uint64_t object, void *data, size_t size) 396 { 397 } 398 399 /*ARGSUSED*/ 400 static void 401 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size) 402 { 403 (void) printf("\tUNKNOWN OBJECT TYPE\n"); 404 } 405 406 /*ARGSUSED*/ 407 static void 408 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) 409 { 410 } 411 412 /*ARGSUSED*/ 413 static void 414 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) 415 { 416 } 417 418 /*ARGSUSED*/ 419 static void 420 dump_zap(objset_t *os, uint64_t object, void *data, size_t size) 421 { 422 zap_cursor_t zc; 423 zap_attribute_t attr; 424 void *prop; 425 unsigned i; 426 427 dump_zap_stats(os, object); 428 (void) printf("\n"); 429 430 for (zap_cursor_init(&zc, os, object); 431 zap_cursor_retrieve(&zc, &attr) == 0; 432 zap_cursor_advance(&zc)) { 433 (void) printf("\t\t%s = ", attr.za_name); 434 if (attr.za_num_integers == 0) { 435 (void) printf("\n"); 436 continue; 437 } 438 prop = umem_zalloc(attr.za_num_integers * 439 attr.za_integer_length, UMEM_NOFAIL); 440 (void) zap_lookup(os, object, attr.za_name, 441 attr.za_integer_length, attr.za_num_integers, prop); 442 if (attr.za_integer_length == 1) { 443 if (strcmp(attr.za_name, 444 DSL_CRYPTO_KEY_MASTER_KEY) == 0 || 445 strcmp(attr.za_name, 446 DSL_CRYPTO_KEY_HMAC_KEY) == 0 || 447 strcmp(attr.za_name, DSL_CRYPTO_KEY_IV) == 0 || 448 strcmp(attr.za_name, DSL_CRYPTO_KEY_MAC) == 0 || 449 strcmp(attr.za_name, DMU_POOL_CHECKSUM_SALT) == 0) { 450 uint8_t *u8 = prop; 451 452 for (i = 0; i < attr.za_num_integers; i++) { 453 (void) printf("%02x", u8[i]); 454 } 455 } else { 456 (void) printf("%s", (char *)prop); 457 } 458 } else { 459 for (i = 0; i < attr.za_num_integers; i++) { 460 switch (attr.za_integer_length) { 461 case 2: 462 (void) printf("%u ", 463 ((uint16_t *)prop)[i]); 464 break; 465 case 4: 466 (void) printf("%u ", 467 ((uint32_t *)prop)[i]); 468 break; 469 case 8: 470 (void) printf("%lld ", 471 (u_longlong_t)((int64_t *)prop)[i]); 472 break; 473 } 474 } 475 } 476 (void) printf("\n"); 477 umem_free(prop, attr.za_num_integers * attr.za_integer_length); 478 } 479 zap_cursor_fini(&zc); 480 } 481 482 static void 483 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size) 484 { 485 bpobj_phys_t *bpop = data; 486 char bytes[32], comp[32], uncomp[32]; 487 488 /* make sure the output won't get truncated */ 489 CTASSERT(sizeof (bytes) >= NN_NUMBUF_SZ); 490 CTASSERT(sizeof (comp) >= NN_NUMBUF_SZ); 491 CTASSERT(sizeof (uncomp) >= NN_NUMBUF_SZ); 492 493 if (bpop == NULL) 494 return; 495 496 zdb_nicenum(bpop->bpo_bytes, bytes, sizeof (bytes)); 497 zdb_nicenum(bpop->bpo_comp, comp, sizeof (comp)); 498 zdb_nicenum(bpop->bpo_uncomp, uncomp, sizeof (uncomp)); 499 500 (void) printf("\t\tnum_blkptrs = %llu\n", 501 (u_longlong_t)bpop->bpo_num_blkptrs); 502 (void) printf("\t\tbytes = %s\n", bytes); 503 if (size >= BPOBJ_SIZE_V1) { 504 (void) printf("\t\tcomp = %s\n", comp); 505 (void) printf("\t\tuncomp = %s\n", uncomp); 506 } 507 if (size >= sizeof (*bpop)) { 508 (void) printf("\t\tsubobjs = %llu\n", 509 (u_longlong_t)bpop->bpo_subobjs); 510 (void) printf("\t\tnum_subobjs = %llu\n", 511 (u_longlong_t)bpop->bpo_num_subobjs); 512 } 513 514 if (dump_opt['d'] < 5) 515 return; 516 517 for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) { 518 char blkbuf[BP_SPRINTF_LEN]; 519 blkptr_t bp; 520 521 int err = dmu_read(os, object, 522 i * sizeof (bp), sizeof (bp), &bp, 0); 523 if (err != 0) { 524 (void) printf("got error %u from dmu_read\n", err); 525 break; 526 } 527 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp); 528 (void) printf("\t%s\n", blkbuf); 529 } 530 } 531 532 /* ARGSUSED */ 533 static void 534 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size) 535 { 536 dmu_object_info_t doi; 537 538 VERIFY0(dmu_object_info(os, object, &doi)); 539 uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP); 540 541 int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0); 542 if (err != 0) { 543 (void) printf("got error %u from dmu_read\n", err); 544 kmem_free(subobjs, doi.doi_max_offset); 545 return; 546 } 547 548 int64_t last_nonzero = -1; 549 for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) { 550 if (subobjs[i] != 0) 551 last_nonzero = i; 552 } 553 554 for (int64_t i = 0; i <= last_nonzero; i++) { 555 (void) printf("\t%llu\n", (longlong_t)subobjs[i]); 556 } 557 kmem_free(subobjs, doi.doi_max_offset); 558 } 559 560 /*ARGSUSED*/ 561 static void 562 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size) 563 { 564 dump_zap_stats(os, object); 565 /* contents are printed elsewhere, properly decoded */ 566 } 567 568 /*ARGSUSED*/ 569 static void 570 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size) 571 { 572 zap_cursor_t zc; 573 zap_attribute_t attr; 574 575 dump_zap_stats(os, object); 576 (void) printf("\n"); 577 578 for (zap_cursor_init(&zc, os, object); 579 zap_cursor_retrieve(&zc, &attr) == 0; 580 zap_cursor_advance(&zc)) { 581 (void) printf("\t\t%s = ", attr.za_name); 582 if (attr.za_num_integers == 0) { 583 (void) printf("\n"); 584 continue; 585 } 586 (void) printf(" %llx : [%d:%d:%d]\n", 587 (u_longlong_t)attr.za_first_integer, 588 (int)ATTR_LENGTH(attr.za_first_integer), 589 (int)ATTR_BSWAP(attr.za_first_integer), 590 (int)ATTR_NUM(attr.za_first_integer)); 591 } 592 zap_cursor_fini(&zc); 593 } 594 595 /*ARGSUSED*/ 596 static void 597 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size) 598 { 599 zap_cursor_t zc; 600 zap_attribute_t attr; 601 uint16_t *layout_attrs; 602 unsigned i; 603 604 dump_zap_stats(os, object); 605 (void) printf("\n"); 606 607 for (zap_cursor_init(&zc, os, object); 608 zap_cursor_retrieve(&zc, &attr) == 0; 609 zap_cursor_advance(&zc)) { 610 (void) printf("\t\t%s = [", attr.za_name); 611 if (attr.za_num_integers == 0) { 612 (void) printf("\n"); 613 continue; 614 } 615 616 VERIFY(attr.za_integer_length == 2); 617 layout_attrs = umem_zalloc(attr.za_num_integers * 618 attr.za_integer_length, UMEM_NOFAIL); 619 620 VERIFY(zap_lookup(os, object, attr.za_name, 621 attr.za_integer_length, 622 attr.za_num_integers, layout_attrs) == 0); 623 624 for (i = 0; i != attr.za_num_integers; i++) 625 (void) printf(" %d ", (int)layout_attrs[i]); 626 (void) printf("]\n"); 627 umem_free(layout_attrs, 628 attr.za_num_integers * attr.za_integer_length); 629 } 630 zap_cursor_fini(&zc); 631 } 632 633 /*ARGSUSED*/ 634 static void 635 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size) 636 { 637 zap_cursor_t zc; 638 zap_attribute_t attr; 639 const char *typenames[] = { 640 /* 0 */ "not specified", 641 /* 1 */ "FIFO", 642 /* 2 */ "Character Device", 643 /* 3 */ "3 (invalid)", 644 /* 4 */ "Directory", 645 /* 5 */ "5 (invalid)", 646 /* 6 */ "Block Device", 647 /* 7 */ "7 (invalid)", 648 /* 8 */ "Regular File", 649 /* 9 */ "9 (invalid)", 650 /* 10 */ "Symbolic Link", 651 /* 11 */ "11 (invalid)", 652 /* 12 */ "Socket", 653 /* 13 */ "Door", 654 /* 14 */ "Event Port", 655 /* 15 */ "15 (invalid)", 656 }; 657 658 dump_zap_stats(os, object); 659 (void) printf("\n"); 660 661 for (zap_cursor_init(&zc, os, object); 662 zap_cursor_retrieve(&zc, &attr) == 0; 663 zap_cursor_advance(&zc)) { 664 (void) printf("\t\t%s = %lld (type: %s)\n", 665 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer), 666 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]); 667 } 668 zap_cursor_fini(&zc); 669 } 670 671 static uint64_t 672 get_dtl_refcount(vdev_t *vd) 673 { 674 uint64_t refcount = 0; 675 676 if (vd->vdev_ops->vdev_op_leaf) { 677 space_map_t *sm = vd->vdev_dtl_sm; 678 679 if (sm != NULL && 680 sm->sm_dbuf->db_size == sizeof (space_map_phys_t)) 681 return (1); 682 return (0); 683 } 684 685 for (unsigned c = 0; c < vd->vdev_children; c++) 686 refcount += get_dtl_refcount(vd->vdev_child[c]); 687 return (refcount); 688 } 689 690 static uint64_t 691 get_metaslab_refcount(vdev_t *vd) 692 { 693 uint64_t refcount = 0; 694 695 if (vd->vdev_top == vd) { 696 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 697 space_map_t *sm = vd->vdev_ms[m]->ms_sm; 698 699 if (sm != NULL && 700 sm->sm_dbuf->db_size == sizeof (space_map_phys_t)) 701 refcount++; 702 } 703 } 704 for (unsigned c = 0; c < vd->vdev_children; c++) 705 refcount += get_metaslab_refcount(vd->vdev_child[c]); 706 707 return (refcount); 708 } 709 710 static uint64_t 711 get_obsolete_refcount(vdev_t *vd) 712 { 713 uint64_t refcount = 0; 714 715 uint64_t obsolete_sm_obj = vdev_obsolete_sm_object(vd); 716 if (vd->vdev_top == vd && obsolete_sm_obj != 0) { 717 dmu_object_info_t doi; 718 VERIFY0(dmu_object_info(vd->vdev_spa->spa_meta_objset, 719 obsolete_sm_obj, &doi)); 720 if (doi.doi_bonus_size == sizeof (space_map_phys_t)) { 721 refcount++; 722 } 723 } else { 724 ASSERT3P(vd->vdev_obsolete_sm, ==, NULL); 725 ASSERT3U(obsolete_sm_obj, ==, 0); 726 } 727 for (unsigned c = 0; c < vd->vdev_children; c++) { 728 refcount += get_obsolete_refcount(vd->vdev_child[c]); 729 } 730 731 return (refcount); 732 } 733 734 static uint64_t 735 get_prev_obsolete_spacemap_refcount(spa_t *spa) 736 { 737 uint64_t prev_obj = 738 spa->spa_condensing_indirect_phys.scip_prev_obsolete_sm_object; 739 if (prev_obj != 0) { 740 dmu_object_info_t doi; 741 VERIFY0(dmu_object_info(spa->spa_meta_objset, prev_obj, &doi)); 742 if (doi.doi_bonus_size == sizeof (space_map_phys_t)) { 743 return (1); 744 } 745 } 746 return (0); 747 } 748 749 static uint64_t 750 get_checkpoint_refcount(vdev_t *vd) 751 { 752 uint64_t refcount = 0; 753 754 if (vd->vdev_top == vd && vd->vdev_top_zap != 0 && 755 zap_contains(spa_meta_objset(vd->vdev_spa), 756 vd->vdev_top_zap, VDEV_TOP_ZAP_POOL_CHECKPOINT_SM) == 0) 757 refcount++; 758 759 for (uint64_t c = 0; c < vd->vdev_children; c++) 760 refcount += get_checkpoint_refcount(vd->vdev_child[c]); 761 762 return (refcount); 763 } 764 765 static uint64_t 766 get_log_spacemap_refcount(spa_t *spa) 767 { 768 return (avl_numnodes(&spa->spa_sm_logs_by_txg)); 769 } 770 771 static int 772 verify_spacemap_refcounts(spa_t *spa) 773 { 774 uint64_t expected_refcount = 0; 775 uint64_t actual_refcount = 0; 776 uint64_t dtl_refcount, metaslab_refcount, obsolete_refcount, 777 prev_obsolete_refcount, checkpoint_refcount, log_spacemap_refcount; 778 779 (void) feature_get_refcount(spa, 780 &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM], 781 &expected_refcount); 782 dtl_refcount = get_dtl_refcount(spa->spa_root_vdev); 783 metaslab_refcount = get_metaslab_refcount(spa->spa_root_vdev); 784 obsolete_refcount = get_obsolete_refcount(spa->spa_root_vdev); 785 prev_obsolete_refcount = get_prev_obsolete_spacemap_refcount(spa); 786 checkpoint_refcount = get_checkpoint_refcount(spa->spa_root_vdev); 787 log_spacemap_refcount = get_log_spacemap_refcount(spa); 788 actual_refcount = dtl_refcount + metaslab_refcount + 789 obsolete_refcount + prev_obsolete_refcount + 790 checkpoint_refcount + log_spacemap_refcount; 791 792 if (expected_refcount != actual_refcount) { 793 (void) printf("space map refcount mismatch: expected %llu != " 794 "actual %llu\n", 795 (u_longlong_t)expected_refcount, 796 (u_longlong_t)actual_refcount); 797 (void) printf("\tDTL: %llu, metaslab: %llu, obsolete: %llu, " 798 "prev obsolete: %llu, checkpoint: %llu, " 799 "log spacemap: %llu\n", 800 (u_longlong_t)dtl_refcount, 801 (u_longlong_t)metaslab_refcount, 802 (u_longlong_t)obsolete_refcount, 803 (u_longlong_t)prev_obsolete_refcount, 804 (u_longlong_t)checkpoint_refcount, 805 (u_longlong_t)log_spacemap_refcount); 806 return (2); 807 } 808 return (0); 809 } 810 811 static void 812 dump_spacemap(objset_t *os, space_map_t *sm) 813 { 814 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID", 815 "INVALID", "INVALID", "INVALID", "INVALID" }; 816 817 if (sm == NULL) 818 return; 819 820 (void) printf("space map object %llu:\n", 821 (longlong_t)sm->sm_object); 822 (void) printf(" smp_length = 0x%llx\n", 823 (longlong_t)sm->sm_phys->smp_length); 824 (void) printf(" smp_alloc = 0x%llx\n", 825 (longlong_t)sm->sm_phys->smp_alloc); 826 827 if (dump_opt['d'] < 6 && dump_opt['m'] < 4) 828 return; 829 830 /* 831 * Print out the freelist entries in both encoded and decoded form. 832 */ 833 uint8_t mapshift = sm->sm_shift; 834 int64_t alloc = 0; 835 uint64_t word, entry_id = 0; 836 for (uint64_t offset = 0; offset < space_map_length(sm); 837 offset += sizeof (word)) { 838 839 VERIFY0(dmu_read(os, space_map_object(sm), offset, 840 sizeof (word), &word, DMU_READ_PREFETCH)); 841 842 if (sm_entry_is_debug(word)) { 843 (void) printf("\t [%6llu] %s: txg %llu pass %llu\n", 844 (u_longlong_t)entry_id, 845 ddata[SM_DEBUG_ACTION_DECODE(word)], 846 (u_longlong_t)SM_DEBUG_TXG_DECODE(word), 847 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(word)); 848 entry_id++; 849 continue; 850 } 851 852 uint8_t words; 853 char entry_type; 854 uint64_t entry_off, entry_run, entry_vdev = SM_NO_VDEVID; 855 856 if (sm_entry_is_single_word(word)) { 857 entry_type = (SM_TYPE_DECODE(word) == SM_ALLOC) ? 858 'A' : 'F'; 859 entry_off = (SM_OFFSET_DECODE(word) << mapshift) + 860 sm->sm_start; 861 entry_run = SM_RUN_DECODE(word) << mapshift; 862 words = 1; 863 } else { 864 /* it is a two-word entry so we read another word */ 865 ASSERT(sm_entry_is_double_word(word)); 866 867 uint64_t extra_word; 868 offset += sizeof (extra_word); 869 VERIFY0(dmu_read(os, space_map_object(sm), offset, 870 sizeof (extra_word), &extra_word, 871 DMU_READ_PREFETCH)); 872 873 ASSERT3U(offset, <=, space_map_length(sm)); 874 875 entry_run = SM2_RUN_DECODE(word) << mapshift; 876 entry_vdev = SM2_VDEV_DECODE(word); 877 entry_type = (SM2_TYPE_DECODE(extra_word) == SM_ALLOC) ? 878 'A' : 'F'; 879 entry_off = (SM2_OFFSET_DECODE(extra_word) << 880 mapshift) + sm->sm_start; 881 words = 2; 882 } 883 884 (void) printf("\t [%6llu] %c range:" 885 " %010llx-%010llx size: %06llx vdev: %06llu words: %u\n", 886 (u_longlong_t)entry_id, 887 entry_type, (u_longlong_t)entry_off, 888 (u_longlong_t)(entry_off + entry_run), 889 (u_longlong_t)entry_run, 890 (u_longlong_t)entry_vdev, words); 891 892 if (entry_type == 'A') 893 alloc += entry_run; 894 else 895 alloc -= entry_run; 896 entry_id++; 897 } 898 if (alloc != space_map_allocated(sm)) { 899 (void) printf("space_map_object alloc (%lld) INCONSISTENT " 900 "with space map summary (%lld)\n", 901 (longlong_t)space_map_allocated(sm), (longlong_t)alloc); 902 } 903 } 904 905 static void 906 dump_metaslab_stats(metaslab_t *msp) 907 { 908 char maxbuf[32]; 909 range_tree_t *rt = msp->ms_allocatable; 910 zfs_btree_t *t = &msp->ms_allocatable_by_size; 911 int free_pct = range_tree_space(rt) * 100 / msp->ms_size; 912 913 /* max sure nicenum has enough space */ 914 CTASSERT(sizeof (maxbuf) >= NN_NUMBUF_SZ); 915 916 zdb_nicenum(metaslab_largest_allocatable(msp), maxbuf, sizeof (maxbuf)); 917 918 (void) printf("\t %25s %10lu %7s %6s %4s %4d%%\n", 919 "segments", zfs_btree_numnodes(t), "maxsize", maxbuf, 920 "freepct", free_pct); 921 (void) printf("\tIn-memory histogram:\n"); 922 dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 923 } 924 925 static void 926 dump_metaslab(metaslab_t *msp) 927 { 928 vdev_t *vd = msp->ms_group->mg_vd; 929 spa_t *spa = vd->vdev_spa; 930 space_map_t *sm = msp->ms_sm; 931 char freebuf[32]; 932 933 zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf, 934 sizeof (freebuf)); 935 936 (void) printf( 937 "\tmetaslab %6llu offset %12llx spacemap %6llu free %5s\n", 938 (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start, 939 (u_longlong_t)space_map_object(sm), freebuf); 940 941 if (dump_opt['m'] > 2 && !dump_opt['L']) { 942 mutex_enter(&msp->ms_lock); 943 VERIFY0(metaslab_load(msp)); 944 range_tree_stat_verify(msp->ms_allocatable); 945 dump_metaslab_stats(msp); 946 metaslab_unload(msp); 947 mutex_exit(&msp->ms_lock); 948 } 949 950 if (dump_opt['m'] > 1 && sm != NULL && 951 spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) { 952 /* 953 * The space map histogram represents free space in chunks 954 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift). 955 */ 956 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n", 957 (u_longlong_t)msp->ms_fragmentation); 958 dump_histogram(sm->sm_phys->smp_histogram, 959 SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift); 960 } 961 962 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift)); 963 dump_spacemap(spa->spa_meta_objset, msp->ms_sm); 964 965 if (spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) { 966 (void) printf("\tFlush data:\n\tunflushed txg=%llu\n\n", 967 (u_longlong_t)metaslab_unflushed_txg(msp)); 968 } 969 } 970 971 static void 972 print_vdev_metaslab_header(vdev_t *vd) 973 { 974 vdev_alloc_bias_t alloc_bias = vd->vdev_alloc_bias; 975 const char *bias_str = ""; 976 977 if (alloc_bias == VDEV_BIAS_LOG || vd->vdev_islog) { 978 bias_str = VDEV_ALLOC_BIAS_LOG; 979 } else if (alloc_bias == VDEV_BIAS_SPECIAL) { 980 bias_str = VDEV_ALLOC_BIAS_SPECIAL; 981 } else if (alloc_bias == VDEV_BIAS_DEDUP) { 982 bias_str = VDEV_ALLOC_BIAS_DEDUP; 983 } 984 985 uint64_t ms_flush_data_obj = 0; 986 if (vd->vdev_top_zap != 0) { 987 int error = zap_lookup(spa_meta_objset(vd->vdev_spa), 988 vd->vdev_top_zap, VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, 989 sizeof (uint64_t), 1, &ms_flush_data_obj); 990 if (error != ENOENT) { 991 ASSERT0(error); 992 } 993 } 994 995 (void) printf("\tvdev %10llu %s", 996 (u_longlong_t)vd->vdev_id, bias_str); 997 998 if (ms_flush_data_obj != 0) { 999 (void) printf(" ms_unflushed_phys object %llu", 1000 (u_longlong_t)ms_flush_data_obj); 1001 } 1002 1003 (void) printf("\n\t%-10s%5llu %-19s %-15s %-12s\n", 1004 "metaslabs", (u_longlong_t)vd->vdev_ms_count, 1005 "offset", "spacemap", "free"); 1006 (void) printf("\t%15s %19s %15s %12s\n", 1007 "---------------", "-------------------", 1008 "---------------", "------------"); 1009 } 1010 1011 static void 1012 dump_metaslab_groups(spa_t *spa) 1013 { 1014 vdev_t *rvd = spa->spa_root_vdev; 1015 metaslab_class_t *mc = spa_normal_class(spa); 1016 uint64_t fragmentation; 1017 1018 metaslab_class_histogram_verify(mc); 1019 1020 for (unsigned c = 0; c < rvd->vdev_children; c++) { 1021 vdev_t *tvd = rvd->vdev_child[c]; 1022 metaslab_group_t *mg = tvd->vdev_mg; 1023 1024 if (mg == NULL || mg->mg_class != mc) 1025 continue; 1026 1027 metaslab_group_histogram_verify(mg); 1028 mg->mg_fragmentation = metaslab_group_fragmentation(mg); 1029 1030 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t" 1031 "fragmentation", 1032 (u_longlong_t)tvd->vdev_id, 1033 (u_longlong_t)tvd->vdev_ms_count); 1034 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) { 1035 (void) printf("%3s\n", "-"); 1036 } else { 1037 (void) printf("%3llu%%\n", 1038 (u_longlong_t)mg->mg_fragmentation); 1039 } 1040 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 1041 } 1042 1043 (void) printf("\tpool %s\tfragmentation", spa_name(spa)); 1044 fragmentation = metaslab_class_fragmentation(mc); 1045 if (fragmentation == ZFS_FRAG_INVALID) 1046 (void) printf("\t%3s\n", "-"); 1047 else 1048 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation); 1049 dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 1050 } 1051 1052 static void 1053 print_vdev_indirect(vdev_t *vd) 1054 { 1055 vdev_indirect_config_t *vic = &vd->vdev_indirect_config; 1056 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 1057 vdev_indirect_births_t *vib = vd->vdev_indirect_births; 1058 1059 if (vim == NULL) { 1060 ASSERT3P(vib, ==, NULL); 1061 return; 1062 } 1063 1064 ASSERT3U(vdev_indirect_mapping_object(vim), ==, 1065 vic->vic_mapping_object); 1066 ASSERT3U(vdev_indirect_births_object(vib), ==, 1067 vic->vic_births_object); 1068 1069 (void) printf("indirect births obj %llu:\n", 1070 (longlong_t)vic->vic_births_object); 1071 (void) printf(" vib_count = %llu\n", 1072 (longlong_t)vdev_indirect_births_count(vib)); 1073 for (uint64_t i = 0; i < vdev_indirect_births_count(vib); i++) { 1074 vdev_indirect_birth_entry_phys_t *cur_vibe = 1075 &vib->vib_entries[i]; 1076 (void) printf("\toffset %llx -> txg %llu\n", 1077 (longlong_t)cur_vibe->vibe_offset, 1078 (longlong_t)cur_vibe->vibe_phys_birth_txg); 1079 } 1080 (void) printf("\n"); 1081 1082 (void) printf("indirect mapping obj %llu:\n", 1083 (longlong_t)vic->vic_mapping_object); 1084 (void) printf(" vim_max_offset = 0x%llx\n", 1085 (longlong_t)vdev_indirect_mapping_max_offset(vim)); 1086 (void) printf(" vim_bytes_mapped = 0x%llx\n", 1087 (longlong_t)vdev_indirect_mapping_bytes_mapped(vim)); 1088 (void) printf(" vim_count = %llu\n", 1089 (longlong_t)vdev_indirect_mapping_num_entries(vim)); 1090 1091 if (dump_opt['d'] <= 5 && dump_opt['m'] <= 3) 1092 return; 1093 1094 uint32_t *counts = vdev_indirect_mapping_load_obsolete_counts(vim); 1095 1096 for (uint64_t i = 0; i < vdev_indirect_mapping_num_entries(vim); i++) { 1097 vdev_indirect_mapping_entry_phys_t *vimep = 1098 &vim->vim_entries[i]; 1099 (void) printf("\t<%llx:%llx:%llx> -> " 1100 "<%llx:%llx:%llx> (%x obsolete)\n", 1101 (longlong_t)vd->vdev_id, 1102 (longlong_t)DVA_MAPPING_GET_SRC_OFFSET(vimep), 1103 (longlong_t)DVA_GET_ASIZE(&vimep->vimep_dst), 1104 (longlong_t)DVA_GET_VDEV(&vimep->vimep_dst), 1105 (longlong_t)DVA_GET_OFFSET(&vimep->vimep_dst), 1106 (longlong_t)DVA_GET_ASIZE(&vimep->vimep_dst), 1107 counts[i]); 1108 } 1109 (void) printf("\n"); 1110 1111 uint64_t obsolete_sm_object = vdev_obsolete_sm_object(vd); 1112 if (obsolete_sm_object != 0) { 1113 objset_t *mos = vd->vdev_spa->spa_meta_objset; 1114 (void) printf("obsolete space map object %llu:\n", 1115 (u_longlong_t)obsolete_sm_object); 1116 ASSERT(vd->vdev_obsolete_sm != NULL); 1117 ASSERT3U(space_map_object(vd->vdev_obsolete_sm), ==, 1118 obsolete_sm_object); 1119 dump_spacemap(mos, vd->vdev_obsolete_sm); 1120 (void) printf("\n"); 1121 } 1122 } 1123 1124 static void 1125 dump_metaslabs(spa_t *spa) 1126 { 1127 vdev_t *vd, *rvd = spa->spa_root_vdev; 1128 uint64_t m, c = 0, children = rvd->vdev_children; 1129 1130 (void) printf("\nMetaslabs:\n"); 1131 1132 if (!dump_opt['d'] && zopt_objects > 0) { 1133 c = zopt_object[0]; 1134 1135 if (c >= children) 1136 (void) fatal("bad vdev id: %llu", (u_longlong_t)c); 1137 1138 if (zopt_objects > 1) { 1139 vd = rvd->vdev_child[c]; 1140 print_vdev_metaslab_header(vd); 1141 1142 for (m = 1; m < zopt_objects; m++) { 1143 if (zopt_object[m] < vd->vdev_ms_count) 1144 dump_metaslab( 1145 vd->vdev_ms[zopt_object[m]]); 1146 else 1147 (void) fprintf(stderr, "bad metaslab " 1148 "number %llu\n", 1149 (u_longlong_t)zopt_object[m]); 1150 } 1151 (void) printf("\n"); 1152 return; 1153 } 1154 children = c + 1; 1155 } 1156 for (; c < children; c++) { 1157 vd = rvd->vdev_child[c]; 1158 print_vdev_metaslab_header(vd); 1159 1160 print_vdev_indirect(vd); 1161 1162 for (m = 0; m < vd->vdev_ms_count; m++) 1163 dump_metaslab(vd->vdev_ms[m]); 1164 (void) printf("\n"); 1165 } 1166 } 1167 1168 static void 1169 dump_log_spacemaps(spa_t *spa) 1170 { 1171 if (!spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) 1172 return; 1173 1174 (void) printf("\nLog Space Maps in Pool:\n"); 1175 for (spa_log_sm_t *sls = avl_first(&spa->spa_sm_logs_by_txg); 1176 sls; sls = AVL_NEXT(&spa->spa_sm_logs_by_txg, sls)) { 1177 space_map_t *sm = NULL; 1178 VERIFY0(space_map_open(&sm, spa_meta_objset(spa), 1179 sls->sls_sm_obj, 0, UINT64_MAX, SPA_MINBLOCKSHIFT)); 1180 1181 (void) printf("Log Spacemap object %llu txg %llu\n", 1182 (u_longlong_t)sls->sls_sm_obj, (u_longlong_t)sls->sls_txg); 1183 dump_spacemap(spa->spa_meta_objset, sm); 1184 space_map_close(sm); 1185 } 1186 (void) printf("\n"); 1187 } 1188 1189 static void 1190 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index) 1191 { 1192 const ddt_phys_t *ddp = dde->dde_phys; 1193 const ddt_key_t *ddk = &dde->dde_key; 1194 const char *types[4] = { "ditto", "single", "double", "triple" }; 1195 char blkbuf[BP_SPRINTF_LEN]; 1196 blkptr_t blk; 1197 1198 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 1199 if (ddp->ddp_phys_birth == 0) 1200 continue; 1201 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk); 1202 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk); 1203 (void) printf("index %llx refcnt %llu %s %s\n", 1204 (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt, 1205 types[p], blkbuf); 1206 } 1207 } 1208 1209 static void 1210 dump_dedup_ratio(const ddt_stat_t *dds) 1211 { 1212 double rL, rP, rD, D, dedup, compress, copies; 1213 1214 if (dds->dds_blocks == 0) 1215 return; 1216 1217 rL = (double)dds->dds_ref_lsize; 1218 rP = (double)dds->dds_ref_psize; 1219 rD = (double)dds->dds_ref_dsize; 1220 D = (double)dds->dds_dsize; 1221 1222 dedup = rD / D; 1223 compress = rL / rP; 1224 copies = rD / rP; 1225 1226 (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, " 1227 "dedup * compress / copies = %.2f\n\n", 1228 dedup, compress, copies, dedup * compress / copies); 1229 } 1230 1231 static void 1232 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class) 1233 { 1234 char name[DDT_NAMELEN]; 1235 ddt_entry_t dde; 1236 uint64_t walk = 0; 1237 dmu_object_info_t doi; 1238 uint64_t count, dspace, mspace; 1239 int error; 1240 1241 error = ddt_object_info(ddt, type, class, &doi); 1242 1243 if (error == ENOENT) 1244 return; 1245 ASSERT(error == 0); 1246 1247 if ((count = ddt_object_count(ddt, type, class)) == 0) 1248 return; 1249 1250 dspace = doi.doi_physical_blocks_512 << 9; 1251 mspace = doi.doi_fill_count * doi.doi_data_block_size; 1252 1253 ddt_object_name(ddt, type, class, name); 1254 1255 (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n", 1256 name, 1257 (u_longlong_t)count, 1258 (u_longlong_t)(dspace / count), 1259 (u_longlong_t)(mspace / count)); 1260 1261 if (dump_opt['D'] < 3) 1262 return; 1263 1264 zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]); 1265 1266 if (dump_opt['D'] < 4) 1267 return; 1268 1269 if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE) 1270 return; 1271 1272 (void) printf("%s contents:\n\n", name); 1273 1274 while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0) 1275 dump_dde(ddt, &dde, walk); 1276 1277 ASSERT3U(error, ==, ENOENT); 1278 1279 (void) printf("\n"); 1280 } 1281 1282 static void 1283 dump_all_ddts(spa_t *spa) 1284 { 1285 ddt_histogram_t ddh_total; 1286 ddt_stat_t dds_total; 1287 1288 bzero(&ddh_total, sizeof (ddh_total)); 1289 bzero(&dds_total, sizeof (dds_total)); 1290 1291 for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { 1292 ddt_t *ddt = spa->spa_ddt[c]; 1293 for (enum ddt_type type = 0; type < DDT_TYPES; type++) { 1294 for (enum ddt_class class = 0; class < DDT_CLASSES; 1295 class++) { 1296 dump_ddt(ddt, type, class); 1297 } 1298 } 1299 } 1300 1301 ddt_get_dedup_stats(spa, &dds_total); 1302 1303 if (dds_total.dds_blocks == 0) { 1304 (void) printf("All DDTs are empty\n"); 1305 return; 1306 } 1307 1308 (void) printf("\n"); 1309 1310 if (dump_opt['D'] > 1) { 1311 (void) printf("DDT histogram (aggregated over all DDTs):\n"); 1312 ddt_get_dedup_histogram(spa, &ddh_total); 1313 zpool_dump_ddt(&dds_total, &ddh_total); 1314 } 1315 1316 dump_dedup_ratio(&dds_total); 1317 } 1318 1319 static void 1320 dump_dtl_seg(void *arg, uint64_t start, uint64_t size) 1321 { 1322 char *prefix = arg; 1323 1324 (void) printf("%s [%llu,%llu) length %llu\n", 1325 prefix, 1326 (u_longlong_t)start, 1327 (u_longlong_t)(start + size), 1328 (u_longlong_t)(size)); 1329 } 1330 1331 static void 1332 dump_dtl(vdev_t *vd, int indent) 1333 { 1334 spa_t *spa = vd->vdev_spa; 1335 boolean_t required; 1336 const char *name[DTL_TYPES] = { "missing", "partial", "scrub", 1337 "outage" }; 1338 char prefix[256]; 1339 1340 spa_vdev_state_enter(spa, SCL_NONE); 1341 required = vdev_dtl_required(vd); 1342 (void) spa_vdev_state_exit(spa, NULL, 0); 1343 1344 if (indent == 0) 1345 (void) printf("\nDirty time logs:\n\n"); 1346 1347 (void) printf("\t%*s%s [%s]\n", indent, "", 1348 vd->vdev_path ? vd->vdev_path : 1349 vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa), 1350 required ? "DTL-required" : "DTL-expendable"); 1351 1352 for (int t = 0; t < DTL_TYPES; t++) { 1353 range_tree_t *rt = vd->vdev_dtl[t]; 1354 if (range_tree_space(rt) == 0) 1355 continue; 1356 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s", 1357 indent + 2, "", name[t]); 1358 range_tree_walk(rt, dump_dtl_seg, prefix); 1359 if (dump_opt['d'] > 5 && vd->vdev_children == 0) 1360 dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm); 1361 } 1362 1363 for (unsigned c = 0; c < vd->vdev_children; c++) 1364 dump_dtl(vd->vdev_child[c], indent + 4); 1365 } 1366 1367 static void 1368 dump_history(spa_t *spa) 1369 { 1370 nvlist_t **events = NULL; 1371 uint64_t resid, len, off = 0; 1372 uint_t num = 0; 1373 int error; 1374 char tbuf[30]; 1375 1376 char *buf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 1377 do { 1378 len = SPA_MAXBLOCKSIZE; 1379 1380 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) { 1381 (void) fprintf(stderr, "Unable to read history: " 1382 "error %d\n", error); 1383 umem_free(buf, SPA_MAXBLOCKSIZE); 1384 return; 1385 } 1386 1387 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0) 1388 break; 1389 1390 off -= resid; 1391 } while (len != 0); 1392 umem_free(buf, SPA_MAXBLOCKSIZE); 1393 1394 (void) printf("\nHistory:\n"); 1395 for (unsigned i = 0; i < num; i++) { 1396 boolean_t printed = B_FALSE; 1397 1398 if (nvlist_exists(events[i], ZPOOL_HIST_TIME)) { 1399 time_t tsec; 1400 struct tm t; 1401 1402 tsec = fnvlist_lookup_uint64(events[i], 1403 ZPOOL_HIST_TIME); 1404 (void) localtime_r(&tsec, &t); 1405 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t); 1406 } else { 1407 tbuf[0] = '\0'; 1408 } 1409 1410 if (nvlist_exists(events[i], ZPOOL_HIST_CMD)) { 1411 (void) printf("%s %s\n", tbuf, 1412 fnvlist_lookup_string(events[i], ZPOOL_HIST_CMD)); 1413 } else if (nvlist_exists(events[i], ZPOOL_HIST_INT_EVENT)) { 1414 uint64_t ievent; 1415 1416 ievent = fnvlist_lookup_uint64(events[i], 1417 ZPOOL_HIST_INT_EVENT); 1418 if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS) 1419 goto next; 1420 1421 (void) printf(" %s [internal %s txg:%ju] %s\n", 1422 tbuf, 1423 zfs_history_event_names[ievent], 1424 fnvlist_lookup_uint64(events[i], 1425 ZPOOL_HIST_TXG), 1426 fnvlist_lookup_string(events[i], 1427 ZPOOL_HIST_INT_STR)); 1428 } else if (nvlist_exists(events[i], ZPOOL_HIST_INT_NAME)) { 1429 (void) printf("%s [txg:%ju] %s", tbuf, 1430 fnvlist_lookup_uint64(events[i], 1431 ZPOOL_HIST_TXG), 1432 fnvlist_lookup_string(events[i], 1433 ZPOOL_HIST_INT_NAME)); 1434 1435 if (nvlist_exists(events[i], ZPOOL_HIST_DSNAME)) { 1436 (void) printf(" %s (%llu)", 1437 fnvlist_lookup_string(events[i], 1438 ZPOOL_HIST_DSNAME), 1439 (u_longlong_t)fnvlist_lookup_uint64( 1440 events[i], 1441 ZPOOL_HIST_DSID)); 1442 } 1443 1444 (void) printf(" %s\n", fnvlist_lookup_string(events[i], 1445 ZPOOL_HIST_INT_STR)); 1446 } else if (nvlist_exists(events[i], ZPOOL_HIST_IOCTL)) { 1447 (void) printf("%s ioctl %s\n", tbuf, 1448 fnvlist_lookup_string(events[i], 1449 ZPOOL_HIST_IOCTL)); 1450 1451 if (nvlist_exists(events[i], ZPOOL_HIST_INPUT_NVL)) { 1452 (void) printf(" input:\n"); 1453 dump_nvlist(fnvlist_lookup_nvlist(events[i], 1454 ZPOOL_HIST_INPUT_NVL), 8); 1455 } 1456 if (nvlist_exists(events[i], ZPOOL_HIST_OUTPUT_NVL)) { 1457 (void) printf(" output:\n"); 1458 dump_nvlist(fnvlist_lookup_nvlist(events[i], 1459 ZPOOL_HIST_OUTPUT_NVL), 8); 1460 } 1461 if (nvlist_exists(events[i], ZPOOL_HIST_ERRNO)) { 1462 (void) printf(" errno: %lld\n", 1463 (longlong_t)fnvlist_lookup_int64(events[i], 1464 ZPOOL_HIST_ERRNO)); 1465 } 1466 } else { 1467 goto next; 1468 } 1469 1470 printed = B_TRUE; 1471 next: 1472 if (dump_opt['h'] > 1) { 1473 if (!printed) 1474 (void) printf("unrecognized record:\n"); 1475 dump_nvlist(events[i], 2); 1476 } 1477 } 1478 } 1479 1480 /*ARGSUSED*/ 1481 static void 1482 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 1483 { 1484 } 1485 1486 static uint64_t 1487 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, 1488 const zbookmark_phys_t *zb) 1489 { 1490 if (dnp == NULL) { 1491 ASSERT(zb->zb_level < 0); 1492 if (zb->zb_object == 0) 1493 return (zb->zb_blkid); 1494 return (zb->zb_blkid * BP_GET_LSIZE(bp)); 1495 } 1496 1497 ASSERT(zb->zb_level >= 0); 1498 1499 return ((zb->zb_blkid << 1500 (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 1501 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 1502 } 1503 1504 static void 1505 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp) 1506 { 1507 const dva_t *dva = bp->blk_dva; 1508 unsigned int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1; 1509 1510 if (dump_opt['b'] >= 6) { 1511 snprintf_blkptr(blkbuf, buflen, bp); 1512 return; 1513 } 1514 1515 if (BP_IS_EMBEDDED(bp)) { 1516 (void) sprintf(blkbuf, 1517 "EMBEDDED et=%u %llxL/%llxP B=%llu", 1518 (int)BPE_GET_ETYPE(bp), 1519 (u_longlong_t)BPE_GET_LSIZE(bp), 1520 (u_longlong_t)BPE_GET_PSIZE(bp), 1521 (u_longlong_t)bp->blk_birth); 1522 return; 1523 } 1524 1525 blkbuf[0] = '\0'; 1526 for (unsigned int i = 0; i < ndvas; i++) 1527 (void) snprintf(blkbuf + strlen(blkbuf), 1528 buflen - strlen(blkbuf), "%llu:%llx:%llx ", 1529 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 1530 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 1531 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 1532 1533 if (BP_IS_HOLE(bp)) { 1534 (void) snprintf(blkbuf + strlen(blkbuf), 1535 buflen - strlen(blkbuf), 1536 "%llxL B=%llu", 1537 (u_longlong_t)BP_GET_LSIZE(bp), 1538 (u_longlong_t)bp->blk_birth); 1539 } else { 1540 (void) snprintf(blkbuf + strlen(blkbuf), 1541 buflen - strlen(blkbuf), 1542 "%llxL/%llxP F=%llu B=%llu/%llu", 1543 (u_longlong_t)BP_GET_LSIZE(bp), 1544 (u_longlong_t)BP_GET_PSIZE(bp), 1545 (u_longlong_t)BP_GET_FILL(bp), 1546 (u_longlong_t)bp->blk_birth, 1547 (u_longlong_t)BP_PHYSICAL_BIRTH(bp)); 1548 } 1549 } 1550 1551 static void 1552 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb, 1553 const dnode_phys_t *dnp) 1554 { 1555 char blkbuf[BP_SPRINTF_LEN]; 1556 int l; 1557 1558 if (!BP_IS_EMBEDDED(bp)) { 1559 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 1560 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 1561 } 1562 1563 (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb)); 1564 1565 ASSERT(zb->zb_level >= 0); 1566 1567 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 1568 if (l == zb->zb_level) { 1569 (void) printf("L%llx", (u_longlong_t)zb->zb_level); 1570 } else { 1571 (void) printf(" "); 1572 } 1573 } 1574 1575 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp); 1576 (void) printf("%s\n", blkbuf); 1577 } 1578 1579 static int 1580 visit_indirect(spa_t *spa, const dnode_phys_t *dnp, 1581 blkptr_t *bp, const zbookmark_phys_t *zb) 1582 { 1583 int err = 0; 1584 1585 if (bp->blk_birth == 0) 1586 return (0); 1587 1588 print_indirect(bp, zb, dnp); 1589 1590 if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) { 1591 arc_flags_t flags = ARC_FLAG_WAIT; 1592 int i; 1593 blkptr_t *cbp; 1594 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT; 1595 arc_buf_t *buf; 1596 uint64_t fill = 0; 1597 1598 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf, 1599 ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb); 1600 if (err) 1601 return (err); 1602 ASSERT(buf->b_data); 1603 1604 /* recursively visit blocks below this */ 1605 cbp = buf->b_data; 1606 for (i = 0; i < epb; i++, cbp++) { 1607 zbookmark_phys_t czb; 1608 1609 SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object, 1610 zb->zb_level - 1, 1611 zb->zb_blkid * epb + i); 1612 err = visit_indirect(spa, dnp, cbp, &czb); 1613 if (err) 1614 break; 1615 fill += BP_GET_FILL(cbp); 1616 } 1617 if (!err) 1618 ASSERT3U(fill, ==, BP_GET_FILL(bp)); 1619 arc_buf_destroy(buf, &buf); 1620 } 1621 1622 return (err); 1623 } 1624 1625 /*ARGSUSED*/ 1626 static void 1627 dump_indirect(dnode_t *dn) 1628 { 1629 dnode_phys_t *dnp = dn->dn_phys; 1630 int j; 1631 zbookmark_phys_t czb; 1632 1633 (void) printf("Indirect blocks:\n"); 1634 1635 SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset), 1636 dn->dn_object, dnp->dn_nlevels - 1, 0); 1637 for (j = 0; j < dnp->dn_nblkptr; j++) { 1638 czb.zb_blkid = j; 1639 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp, 1640 &dnp->dn_blkptr[j], &czb); 1641 } 1642 1643 (void) printf("\n"); 1644 } 1645 1646 /*ARGSUSED*/ 1647 static void 1648 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 1649 { 1650 dsl_dir_phys_t *dd = data; 1651 time_t crtime; 1652 char nice[32]; 1653 1654 /* make sure nicenum has enough space */ 1655 CTASSERT(sizeof (nice) >= NN_NUMBUF_SZ); 1656 1657 if (dd == NULL) 1658 return; 1659 1660 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t)); 1661 1662 crtime = dd->dd_creation_time; 1663 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1664 (void) printf("\t\thead_dataset_obj = %llu\n", 1665 (u_longlong_t)dd->dd_head_dataset_obj); 1666 (void) printf("\t\tparent_dir_obj = %llu\n", 1667 (u_longlong_t)dd->dd_parent_obj); 1668 (void) printf("\t\torigin_obj = %llu\n", 1669 (u_longlong_t)dd->dd_origin_obj); 1670 (void) printf("\t\tchild_dir_zapobj = %llu\n", 1671 (u_longlong_t)dd->dd_child_dir_zapobj); 1672 zdb_nicenum(dd->dd_used_bytes, nice, sizeof (nice)); 1673 (void) printf("\t\tused_bytes = %s\n", nice); 1674 zdb_nicenum(dd->dd_compressed_bytes, nice, sizeof (nice)); 1675 (void) printf("\t\tcompressed_bytes = %s\n", nice); 1676 zdb_nicenum(dd->dd_uncompressed_bytes, nice, sizeof (nice)); 1677 (void) printf("\t\tuncompressed_bytes = %s\n", nice); 1678 zdb_nicenum(dd->dd_quota, nice, sizeof (nice)); 1679 (void) printf("\t\tquota = %s\n", nice); 1680 zdb_nicenum(dd->dd_reserved, nice, sizeof (nice)); 1681 (void) printf("\t\treserved = %s\n", nice); 1682 (void) printf("\t\tprops_zapobj = %llu\n", 1683 (u_longlong_t)dd->dd_props_zapobj); 1684 (void) printf("\t\tdeleg_zapobj = %llu\n", 1685 (u_longlong_t)dd->dd_deleg_zapobj); 1686 (void) printf("\t\tflags = %llx\n", 1687 (u_longlong_t)dd->dd_flags); 1688 1689 #define DO(which) \ 1690 zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice, \ 1691 sizeof (nice)); \ 1692 (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice) 1693 DO(HEAD); 1694 DO(SNAP); 1695 DO(CHILD); 1696 DO(CHILD_RSRV); 1697 DO(REFRSRV); 1698 #undef DO 1699 (void) printf("\t\tclones = %llu\n", 1700 (u_longlong_t)dd->dd_clones); 1701 } 1702 1703 /*ARGSUSED*/ 1704 static void 1705 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 1706 { 1707 dsl_dataset_phys_t *ds = data; 1708 time_t crtime; 1709 char used[32], compressed[32], uncompressed[32], unique[32]; 1710 char blkbuf[BP_SPRINTF_LEN]; 1711 1712 /* make sure nicenum has enough space */ 1713 CTASSERT(sizeof (used) >= NN_NUMBUF_SZ); 1714 CTASSERT(sizeof (compressed) >= NN_NUMBUF_SZ); 1715 CTASSERT(sizeof (uncompressed) >= NN_NUMBUF_SZ); 1716 CTASSERT(sizeof (unique) >= NN_NUMBUF_SZ); 1717 1718 if (ds == NULL) 1719 return; 1720 1721 ASSERT(size == sizeof (*ds)); 1722 crtime = ds->ds_creation_time; 1723 zdb_nicenum(ds->ds_referenced_bytes, used, sizeof (used)); 1724 zdb_nicenum(ds->ds_compressed_bytes, compressed, sizeof (compressed)); 1725 zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed, 1726 sizeof (uncompressed)); 1727 zdb_nicenum(ds->ds_unique_bytes, unique, sizeof (unique)); 1728 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp); 1729 1730 (void) printf("\t\tdir_obj = %llu\n", 1731 (u_longlong_t)ds->ds_dir_obj); 1732 (void) printf("\t\tprev_snap_obj = %llu\n", 1733 (u_longlong_t)ds->ds_prev_snap_obj); 1734 (void) printf("\t\tprev_snap_txg = %llu\n", 1735 (u_longlong_t)ds->ds_prev_snap_txg); 1736 (void) printf("\t\tnext_snap_obj = %llu\n", 1737 (u_longlong_t)ds->ds_next_snap_obj); 1738 (void) printf("\t\tsnapnames_zapobj = %llu\n", 1739 (u_longlong_t)ds->ds_snapnames_zapobj); 1740 (void) printf("\t\tnum_children = %llu\n", 1741 (u_longlong_t)ds->ds_num_children); 1742 (void) printf("\t\tuserrefs_obj = %llu\n", 1743 (u_longlong_t)ds->ds_userrefs_obj); 1744 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1745 (void) printf("\t\tcreation_txg = %llu\n", 1746 (u_longlong_t)ds->ds_creation_txg); 1747 (void) printf("\t\tdeadlist_obj = %llu\n", 1748 (u_longlong_t)ds->ds_deadlist_obj); 1749 (void) printf("\t\tused_bytes = %s\n", used); 1750 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 1751 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 1752 (void) printf("\t\tunique = %s\n", unique); 1753 (void) printf("\t\tfsid_guid = %llu\n", 1754 (u_longlong_t)ds->ds_fsid_guid); 1755 (void) printf("\t\tguid = %llu\n", 1756 (u_longlong_t)ds->ds_guid); 1757 (void) printf("\t\tflags = %llx\n", 1758 (u_longlong_t)ds->ds_flags); 1759 (void) printf("\t\tnext_clones_obj = %llu\n", 1760 (u_longlong_t)ds->ds_next_clones_obj); 1761 (void) printf("\t\tprops_obj = %llu\n", 1762 (u_longlong_t)ds->ds_props_obj); 1763 (void) printf("\t\tbp = %s\n", blkbuf); 1764 } 1765 1766 /* ARGSUSED */ 1767 static int 1768 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 1769 { 1770 char blkbuf[BP_SPRINTF_LEN]; 1771 1772 if (bp->blk_birth != 0) { 1773 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 1774 (void) printf("\t%s\n", blkbuf); 1775 } 1776 return (0); 1777 } 1778 1779 static void 1780 dump_bptree(objset_t *os, uint64_t obj, const char *name) 1781 { 1782 char bytes[32]; 1783 bptree_phys_t *bt; 1784 dmu_buf_t *db; 1785 1786 /* make sure nicenum has enough space */ 1787 CTASSERT(sizeof (bytes) >= NN_NUMBUF_SZ); 1788 1789 if (dump_opt['d'] < 3) 1790 return; 1791 1792 VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db)); 1793 bt = db->db_data; 1794 zdb_nicenum(bt->bt_bytes, bytes, sizeof (bytes)); 1795 (void) printf("\n %s: %llu datasets, %s\n", 1796 name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes); 1797 dmu_buf_rele(db, FTAG); 1798 1799 if (dump_opt['d'] < 5) 1800 return; 1801 1802 (void) printf("\n"); 1803 1804 (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL); 1805 } 1806 1807 /* ARGSUSED */ 1808 static int 1809 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 1810 { 1811 char blkbuf[BP_SPRINTF_LEN]; 1812 1813 ASSERT(bp->blk_birth != 0); 1814 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp); 1815 (void) printf("\t%s\n", blkbuf); 1816 return (0); 1817 } 1818 1819 static void 1820 dump_full_bpobj(bpobj_t *bpo, const char *name, int indent) 1821 { 1822 char bytes[32]; 1823 char comp[32]; 1824 char uncomp[32]; 1825 1826 /* make sure nicenum has enough space */ 1827 CTASSERT(sizeof (bytes) >= NN_NUMBUF_SZ); 1828 CTASSERT(sizeof (comp) >= NN_NUMBUF_SZ); 1829 CTASSERT(sizeof (uncomp) >= NN_NUMBUF_SZ); 1830 1831 if (dump_opt['d'] < 3) 1832 return; 1833 1834 zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes, sizeof (bytes)); 1835 if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) { 1836 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp, sizeof (comp)); 1837 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp, sizeof (uncomp)); 1838 (void) printf(" %*s: object %llu, %llu local blkptrs, " 1839 "%llu subobjs in object %llu, %s (%s/%s comp)\n", 1840 indent * 8, name, 1841 (u_longlong_t)bpo->bpo_object, 1842 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, 1843 (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs, 1844 (u_longlong_t)bpo->bpo_phys->bpo_subobjs, 1845 bytes, comp, uncomp); 1846 1847 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) { 1848 uint64_t subobj; 1849 bpobj_t subbpo; 1850 int error; 1851 VERIFY0(dmu_read(bpo->bpo_os, 1852 bpo->bpo_phys->bpo_subobjs, 1853 i * sizeof (subobj), sizeof (subobj), &subobj, 0)); 1854 error = bpobj_open(&subbpo, bpo->bpo_os, subobj); 1855 if (error != 0) { 1856 (void) printf("ERROR %u while trying to open " 1857 "subobj id %llu\n", 1858 error, (u_longlong_t)subobj); 1859 continue; 1860 } 1861 dump_full_bpobj(&subbpo, "subobj", indent + 1); 1862 bpobj_close(&subbpo); 1863 } 1864 } else { 1865 (void) printf(" %*s: object %llu, %llu blkptrs, %s\n", 1866 indent * 8, name, 1867 (u_longlong_t)bpo->bpo_object, 1868 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, 1869 bytes); 1870 } 1871 1872 if (dump_opt['d'] < 5) 1873 return; 1874 1875 1876 if (indent == 0) { 1877 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL); 1878 (void) printf("\n"); 1879 } 1880 } 1881 1882 static void 1883 bpobj_count_refd(bpobj_t *bpo) 1884 { 1885 mos_obj_refd(bpo->bpo_object); 1886 1887 if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) { 1888 mos_obj_refd(bpo->bpo_phys->bpo_subobjs); 1889 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) { 1890 uint64_t subobj; 1891 bpobj_t subbpo; 1892 int error; 1893 VERIFY0(dmu_read(bpo->bpo_os, 1894 bpo->bpo_phys->bpo_subobjs, 1895 i * sizeof (subobj), sizeof (subobj), &subobj, 0)); 1896 error = bpobj_open(&subbpo, bpo->bpo_os, subobj); 1897 if (error != 0) { 1898 (void) printf("ERROR %u while trying to open " 1899 "subobj id %llu\n", 1900 error, (u_longlong_t)subobj); 1901 continue; 1902 } 1903 bpobj_count_refd(&subbpo); 1904 bpobj_close(&subbpo); 1905 } 1906 } 1907 } 1908 1909 static void 1910 dump_deadlist(dsl_deadlist_t *dl) 1911 { 1912 dsl_deadlist_entry_t *dle; 1913 uint64_t unused; 1914 char bytes[32]; 1915 char comp[32]; 1916 char uncomp[32]; 1917 uint64_t empty_bpobj = 1918 dmu_objset_spa(dl->dl_os)->spa_dsl_pool->dp_empty_bpobj; 1919 1920 /* force the tree to be loaded */ 1921 dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused); 1922 1923 if (dl->dl_oldfmt) { 1924 if (dl->dl_bpobj.bpo_object != empty_bpobj) 1925 bpobj_count_refd(&dl->dl_bpobj); 1926 } else { 1927 mos_obj_refd(dl->dl_object); 1928 for (dle = avl_first(&dl->dl_tree); dle; 1929 dle = AVL_NEXT(&dl->dl_tree, dle)) { 1930 if (dle->dle_bpobj.bpo_object != empty_bpobj) 1931 bpobj_count_refd(&dle->dle_bpobj); 1932 } 1933 } 1934 1935 /* make sure nicenum has enough space */ 1936 CTASSERT(sizeof (bytes) >= NN_NUMBUF_SZ); 1937 CTASSERT(sizeof (comp) >= NN_NUMBUF_SZ); 1938 CTASSERT(sizeof (uncomp) >= NN_NUMBUF_SZ); 1939 1940 if (dump_opt['d'] < 3) 1941 return; 1942 1943 if (dl->dl_oldfmt) { 1944 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0); 1945 return; 1946 } 1947 1948 zdb_nicenum(dl->dl_phys->dl_used, bytes, sizeof (bytes)); 1949 zdb_nicenum(dl->dl_phys->dl_comp, comp, sizeof (comp)); 1950 zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp, sizeof (uncomp)); 1951 (void) printf("\n Deadlist: %s (%s/%s comp)\n", 1952 bytes, comp, uncomp); 1953 1954 if (dump_opt['d'] < 4) 1955 return; 1956 1957 (void) printf("\n"); 1958 1959 for (dle = avl_first(&dl->dl_tree); dle; 1960 dle = AVL_NEXT(&dl->dl_tree, dle)) { 1961 if (dump_opt['d'] >= 5) { 1962 char buf[128]; 1963 (void) snprintf(buf, sizeof (buf), 1964 "mintxg %llu -> obj %llu", 1965 (longlong_t)dle->dle_mintxg, 1966 (longlong_t)dle->dle_bpobj.bpo_object); 1967 1968 dump_full_bpobj(&dle->dle_bpobj, buf, 0); 1969 } else { 1970 (void) printf("mintxg %llu -> obj %llu\n", 1971 (longlong_t)dle->dle_mintxg, 1972 (longlong_t)dle->dle_bpobj.bpo_object); 1973 } 1974 } 1975 } 1976 1977 static avl_tree_t idx_tree; 1978 static avl_tree_t domain_tree; 1979 static boolean_t fuid_table_loaded; 1980 static objset_t *sa_os = NULL; 1981 static sa_attr_type_t *sa_attr_table = NULL; 1982 1983 static int 1984 open_objset(const char *path, dmu_objset_type_t type, void *tag, objset_t **osp) 1985 { 1986 int err; 1987 uint64_t sa_attrs = 0; 1988 uint64_t version = 0; 1989 1990 VERIFY3P(sa_os, ==, NULL); 1991 err = dmu_objset_own(path, type, B_TRUE, B_FALSE, tag, osp); 1992 if (err != 0) { 1993 (void) fprintf(stderr, "failed to own dataset '%s': %s\n", path, 1994 strerror(err)); 1995 return (err); 1996 } 1997 1998 if (dmu_objset_type(*osp) == DMU_OST_ZFS && !(*osp)->os_encrypted) { 1999 (void) zap_lookup(*osp, MASTER_NODE_OBJ, ZPL_VERSION_STR, 2000 8, 1, &version); 2001 if (version >= ZPL_VERSION_SA) { 2002 (void) zap_lookup(*osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 2003 8, 1, &sa_attrs); 2004 } 2005 err = sa_setup(*osp, sa_attrs, zfs_attr_table, ZPL_END, 2006 &sa_attr_table); 2007 if (err != 0) { 2008 (void) fprintf(stderr, "sa_setup failed: %s\n", 2009 strerror(err)); 2010 dmu_objset_disown(*osp, B_FALSE, tag); 2011 *osp = NULL; 2012 } 2013 } 2014 sa_os = *osp; 2015 2016 return (0); 2017 } 2018 2019 static void 2020 close_objset(objset_t *os, void *tag) 2021 { 2022 VERIFY3P(os, ==, sa_os); 2023 if (os->os_sa != NULL) 2024 sa_tear_down(os); 2025 dmu_objset_disown(os, B_FALSE, tag); 2026 sa_attr_table = NULL; 2027 sa_os = NULL; 2028 } 2029 2030 static void 2031 fuid_table_destroy() 2032 { 2033 if (fuid_table_loaded) { 2034 zfs_fuid_table_destroy(&idx_tree, &domain_tree); 2035 fuid_table_loaded = B_FALSE; 2036 } 2037 } 2038 2039 /* 2040 * print uid or gid information. 2041 * For normal POSIX id just the id is printed in decimal format. 2042 * For CIFS files with FUID the fuid is printed in hex followed by 2043 * the domain-rid string. 2044 */ 2045 static void 2046 print_idstr(uint64_t id, const char *id_type) 2047 { 2048 if (FUID_INDEX(id)) { 2049 char *domain; 2050 2051 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id)); 2052 (void) printf("\t%s %llx [%s-%d]\n", id_type, 2053 (u_longlong_t)id, domain, (int)FUID_RID(id)); 2054 } else { 2055 (void) printf("\t%s %llu\n", id_type, (u_longlong_t)id); 2056 } 2057 2058 } 2059 2060 static void 2061 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid) 2062 { 2063 uint32_t uid_idx, gid_idx; 2064 2065 uid_idx = FUID_INDEX(uid); 2066 gid_idx = FUID_INDEX(gid); 2067 2068 /* Load domain table, if not already loaded */ 2069 if (!fuid_table_loaded && (uid_idx || gid_idx)) { 2070 uint64_t fuid_obj; 2071 2072 /* first find the fuid object. It lives in the master node */ 2073 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 2074 8, 1, &fuid_obj) == 0); 2075 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree); 2076 (void) zfs_fuid_table_load(os, fuid_obj, 2077 &idx_tree, &domain_tree); 2078 fuid_table_loaded = B_TRUE; 2079 } 2080 2081 print_idstr(uid, "uid"); 2082 print_idstr(gid, "gid"); 2083 } 2084 2085 /*ARGSUSED*/ 2086 static void 2087 dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 2088 { 2089 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 2090 sa_handle_t *hdl; 2091 uint64_t xattr, rdev, gen; 2092 uint64_t uid, gid, mode, fsize, parent, links; 2093 uint64_t pflags; 2094 uint64_t acctm[2], modtm[2], chgtm[2], crtm[2]; 2095 time_t z_crtime, z_atime, z_mtime, z_ctime; 2096 sa_bulk_attr_t bulk[12]; 2097 int idx = 0; 2098 int error; 2099 2100 VERIFY3P(os, ==, sa_os); 2101 if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) { 2102 (void) printf("Failed to get handle for SA znode\n"); 2103 return; 2104 } 2105 2106 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8); 2107 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8); 2108 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL, 2109 &links, 8); 2110 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8); 2111 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL, 2112 &mode, 8); 2113 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT], 2114 NULL, &parent, 8); 2115 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL, 2116 &fsize, 8); 2117 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL, 2118 acctm, 16); 2119 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL, 2120 modtm, 16); 2121 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL, 2122 crtm, 16); 2123 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL, 2124 chgtm, 16); 2125 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL, 2126 &pflags, 8); 2127 2128 if (sa_bulk_lookup(hdl, bulk, idx)) { 2129 (void) sa_handle_destroy(hdl); 2130 return; 2131 } 2132 2133 z_crtime = (time_t)crtm[0]; 2134 z_atime = (time_t)acctm[0]; 2135 z_mtime = (time_t)modtm[0]; 2136 z_ctime = (time_t)chgtm[0]; 2137 2138 if (dump_opt['d'] > 4) { 2139 error = zfs_obj_to_path(os, object, path, sizeof (path)); 2140 if (error == ESTALE) { 2141 (void) snprintf(path, sizeof (path), "on delete queue"); 2142 } else if (error != 0) { 2143 leaked_objects++; 2144 (void) snprintf(path, sizeof (path), 2145 "path not found, possibly leaked"); 2146 } 2147 (void) printf("\tpath %s\n", path); 2148 } 2149 dump_uidgid(os, uid, gid); 2150 (void) printf("\tatime %s", ctime(&z_atime)); 2151 (void) printf("\tmtime %s", ctime(&z_mtime)); 2152 (void) printf("\tctime %s", ctime(&z_ctime)); 2153 (void) printf("\tcrtime %s", ctime(&z_crtime)); 2154 (void) printf("\tgen %llu\n", (u_longlong_t)gen); 2155 (void) printf("\tmode %llo\n", (u_longlong_t)mode); 2156 (void) printf("\tsize %llu\n", (u_longlong_t)fsize); 2157 (void) printf("\tparent %llu\n", (u_longlong_t)parent); 2158 (void) printf("\tlinks %llu\n", (u_longlong_t)links); 2159 (void) printf("\tpflags %llx\n", (u_longlong_t)pflags); 2160 if (dmu_objset_projectquota_enabled(os) && (pflags & ZFS_PROJID)) { 2161 uint64_t projid; 2162 2163 if (sa_lookup(hdl, sa_attr_table[ZPL_PROJID], &projid, 2164 sizeof (uint64_t)) == 0) 2165 (void) printf("\tprojid %llu\n", (u_longlong_t)projid); 2166 } 2167 if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr, 2168 sizeof (uint64_t)) == 0) 2169 (void) printf("\txattr %llu\n", (u_longlong_t)xattr); 2170 if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev, 2171 sizeof (uint64_t)) == 0) 2172 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)rdev); 2173 sa_handle_destroy(hdl); 2174 } 2175 2176 /*ARGSUSED*/ 2177 static void 2178 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 2179 { 2180 } 2181 2182 /*ARGSUSED*/ 2183 static void 2184 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 2185 { 2186 } 2187 2188 2189 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = { 2190 dump_none, /* unallocated */ 2191 dump_zap, /* object directory */ 2192 dump_uint64, /* object array */ 2193 dump_none, /* packed nvlist */ 2194 dump_packed_nvlist, /* packed nvlist size */ 2195 dump_none, /* bpobj */ 2196 dump_bpobj, /* bpobj header */ 2197 dump_none, /* SPA space map header */ 2198 dump_none, /* SPA space map */ 2199 dump_none, /* ZIL intent log */ 2200 dump_dnode, /* DMU dnode */ 2201 dump_dmu_objset, /* DMU objset */ 2202 dump_dsl_dir, /* DSL directory */ 2203 dump_zap, /* DSL directory child map */ 2204 dump_zap, /* DSL dataset snap map */ 2205 dump_zap, /* DSL props */ 2206 dump_dsl_dataset, /* DSL dataset */ 2207 dump_znode, /* ZFS znode */ 2208 dump_acl, /* ZFS V0 ACL */ 2209 dump_uint8, /* ZFS plain file */ 2210 dump_zpldir, /* ZFS directory */ 2211 dump_zap, /* ZFS master node */ 2212 dump_zap, /* ZFS delete queue */ 2213 dump_uint8, /* zvol object */ 2214 dump_zap, /* zvol prop */ 2215 dump_uint8, /* other uint8[] */ 2216 dump_uint64, /* other uint64[] */ 2217 dump_zap, /* other ZAP */ 2218 dump_zap, /* persistent error log */ 2219 dump_uint8, /* SPA history */ 2220 dump_history_offsets, /* SPA history offsets */ 2221 dump_zap, /* Pool properties */ 2222 dump_zap, /* DSL permissions */ 2223 dump_acl, /* ZFS ACL */ 2224 dump_uint8, /* ZFS SYSACL */ 2225 dump_none, /* FUID nvlist */ 2226 dump_packed_nvlist, /* FUID nvlist size */ 2227 dump_zap, /* DSL dataset next clones */ 2228 dump_zap, /* DSL scrub queue */ 2229 dump_zap, /* ZFS user/group/project used */ 2230 dump_zap, /* ZFS user/group/project quota */ 2231 dump_zap, /* snapshot refcount tags */ 2232 dump_ddt_zap, /* DDT ZAP object */ 2233 dump_zap, /* DDT statistics */ 2234 dump_znode, /* SA object */ 2235 dump_zap, /* SA Master Node */ 2236 dump_sa_attrs, /* SA attribute registration */ 2237 dump_sa_layouts, /* SA attribute layouts */ 2238 dump_zap, /* DSL scrub translations */ 2239 dump_none, /* fake dedup BP */ 2240 dump_zap, /* deadlist */ 2241 dump_none, /* deadlist hdr */ 2242 dump_zap, /* dsl clones */ 2243 dump_bpobj_subobjs, /* bpobj subobjs */ 2244 dump_unknown, /* Unknown type, must be last */ 2245 }; 2246 2247 static void 2248 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header, 2249 uint64_t *dnode_slots_used) 2250 { 2251 dmu_buf_t *db = NULL; 2252 dmu_object_info_t doi; 2253 dnode_t *dn; 2254 boolean_t dnode_held = B_FALSE; 2255 void *bonus = NULL; 2256 size_t bsize = 0; 2257 char iblk[32], dblk[32], lsize[32], asize[32], fill[32], dnsize[32]; 2258 char bonus_size[32]; 2259 char aux[50]; 2260 int error; 2261 2262 /* make sure nicenum has enough space */ 2263 CTASSERT(sizeof (iblk) >= NN_NUMBUF_SZ); 2264 CTASSERT(sizeof (dblk) >= NN_NUMBUF_SZ); 2265 CTASSERT(sizeof (lsize) >= NN_NUMBUF_SZ); 2266 CTASSERT(sizeof (asize) >= NN_NUMBUF_SZ); 2267 CTASSERT(sizeof (bonus_size) >= NN_NUMBUF_SZ); 2268 2269 if (*print_header) { 2270 (void) printf("\n%10s %3s %5s %5s %5s %6s %5s %6s %s\n", 2271 "Object", "lvl", "iblk", "dblk", "dsize", "dnsize", 2272 "lsize", "%full", "type"); 2273 *print_header = 0; 2274 } 2275 2276 if (object == 0) { 2277 dn = DMU_META_DNODE(os); 2278 dmu_object_info_from_dnode(dn, &doi); 2279 } else { 2280 /* 2281 * Encrypted datasets will have sensitive bonus buffers 2282 * encrypted. Therefore we cannot hold the bonus buffer and 2283 * must hold the dnode itself instead. 2284 */ 2285 error = dmu_object_info(os, object, &doi); 2286 if (error) 2287 fatal("dmu_object_info() failed, errno %u", error); 2288 2289 if (os->os_encrypted && 2290 DMU_OT_IS_ENCRYPTED(doi.doi_bonus_type)) { 2291 error = dnode_hold(os, object, FTAG, &dn); 2292 if (error) 2293 fatal("dnode_hold() failed, errno %u", error); 2294 dnode_held = B_TRUE; 2295 } else { 2296 error = dmu_bonus_hold(os, object, FTAG, &db); 2297 if (error) 2298 fatal("dmu_bonus_hold(%llu) failed, errno %u", 2299 object, error); 2300 bonus = db->db_data; 2301 bsize = db->db_size; 2302 dn = DB_DNODE((dmu_buf_impl_t *)db); 2303 } 2304 } 2305 2306 if (dnode_slots_used != NULL) 2307 *dnode_slots_used = doi.doi_dnodesize / DNODE_MIN_SIZE; 2308 2309 zdb_nicenum(doi.doi_metadata_block_size, iblk, sizeof (iblk)); 2310 zdb_nicenum(doi.doi_data_block_size, dblk, sizeof (dblk)); 2311 zdb_nicenum(doi.doi_max_offset, lsize, sizeof (lsize)); 2312 zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize, sizeof (asize)); 2313 zdb_nicenum(doi.doi_bonus_size, bonus_size, sizeof (bonus_size)); 2314 zdb_nicenum(doi.doi_dnodesize, dnsize, sizeof (dnsize)); 2315 (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count * 2316 doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) / 2317 doi.doi_max_offset); 2318 2319 aux[0] = '\0'; 2320 2321 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 2322 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 2323 ZDB_CHECKSUM_NAME(doi.doi_checksum)); 2324 } 2325 2326 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 2327 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 2328 ZDB_COMPRESS_NAME(doi.doi_compress)); 2329 } 2330 2331 (void) printf("%10" PRIu64 2332 " %3u %5s %5s %5s %5s %5s %6s %s%s\n", 2333 object, doi.doi_indirection, iblk, dblk, 2334 asize, dnsize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux); 2335 2336 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 2337 (void) printf("%10s %3s %5s %5s %5s %5s %5s %6s %s\n", 2338 "", "", "", "", "", "", bonus_size, "bonus", 2339 ZDB_OT_NAME(doi.doi_bonus_type)); 2340 } 2341 2342 if (verbosity >= 4) { 2343 (void) printf("\tdnode flags: %s%s%s%s\n", 2344 (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ? 2345 "USED_BYTES " : "", 2346 (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ? 2347 "USERUSED_ACCOUNTED " : "", 2348 (dn->dn_phys->dn_flags & DNODE_FLAG_USEROBJUSED_ACCOUNTED) ? 2349 "USEROBJUSED_ACCOUNTED " : "", 2350 (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ? 2351 "SPILL_BLKPTR" : ""); 2352 (void) printf("\tdnode maxblkid: %llu\n", 2353 (longlong_t)dn->dn_phys->dn_maxblkid); 2354 2355 if (!dnode_held) { 2356 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, 2357 object, bonus, bsize); 2358 } else { 2359 (void) printf("\t\t(bonus encrypted)\n"); 2360 } 2361 2362 if (!os->os_encrypted || !DMU_OT_IS_ENCRYPTED(doi.doi_type)) { 2363 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, 2364 NULL, 0); 2365 } else { 2366 (void) printf("\t\t(object encrypted)\n"); 2367 } 2368 2369 *print_header = 1; 2370 } 2371 2372 if (verbosity >= 5) 2373 dump_indirect(dn); 2374 2375 if (verbosity >= 5) { 2376 /* 2377 * Report the list of segments that comprise the object. 2378 */ 2379 uint64_t start = 0; 2380 uint64_t end; 2381 uint64_t blkfill = 1; 2382 int minlvl = 1; 2383 2384 if (dn->dn_type == DMU_OT_DNODE) { 2385 minlvl = 0; 2386 blkfill = DNODES_PER_BLOCK; 2387 } 2388 2389 for (;;) { 2390 char segsize[32]; 2391 /* make sure nicenum has enough space */ 2392 CTASSERT(sizeof (segsize) >= NN_NUMBUF_SZ); 2393 error = dnode_next_offset(dn, 2394 0, &start, minlvl, blkfill, 0); 2395 if (error) 2396 break; 2397 end = start; 2398 error = dnode_next_offset(dn, 2399 DNODE_FIND_HOLE, &end, minlvl, blkfill, 0); 2400 zdb_nicenum(end - start, segsize, sizeof (segsize)); 2401 (void) printf("\t\tsegment [%016llx, %016llx)" 2402 " size %5s\n", (u_longlong_t)start, 2403 (u_longlong_t)end, segsize); 2404 if (error) 2405 break; 2406 start = end; 2407 } 2408 } 2409 2410 if (db != NULL) 2411 dmu_buf_rele(db, FTAG); 2412 if (dnode_held) 2413 dnode_rele(dn, FTAG); 2414 } 2415 2416 static void 2417 count_dir_mos_objects(dsl_dir_t *dd) 2418 { 2419 mos_obj_refd(dd->dd_object); 2420 mos_obj_refd(dsl_dir_phys(dd)->dd_child_dir_zapobj); 2421 mos_obj_refd(dsl_dir_phys(dd)->dd_deleg_zapobj); 2422 mos_obj_refd(dsl_dir_phys(dd)->dd_props_zapobj); 2423 mos_obj_refd(dsl_dir_phys(dd)->dd_clones); 2424 } 2425 2426 static void 2427 count_ds_mos_objects(dsl_dataset_t *ds) 2428 { 2429 mos_obj_refd(ds->ds_object); 2430 mos_obj_refd(dsl_dataset_phys(ds)->ds_next_clones_obj); 2431 mos_obj_refd(dsl_dataset_phys(ds)->ds_props_obj); 2432 mos_obj_refd(dsl_dataset_phys(ds)->ds_userrefs_obj); 2433 mos_obj_refd(dsl_dataset_phys(ds)->ds_snapnames_zapobj); 2434 2435 if (!dsl_dataset_is_snapshot(ds)) { 2436 count_dir_mos_objects(ds->ds_dir); 2437 } 2438 } 2439 2440 static const char *objset_types[DMU_OST_NUMTYPES] = { 2441 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 2442 2443 static void 2444 dump_dir(objset_t *os) 2445 { 2446 dmu_objset_stats_t dds; 2447 uint64_t object, object_count; 2448 uint64_t refdbytes, usedobjs, scratch; 2449 char numbuf[32]; 2450 char blkbuf[BP_SPRINTF_LEN + 20]; 2451 char osname[ZFS_MAX_DATASET_NAME_LEN]; 2452 const char *type = "UNKNOWN"; 2453 int verbosity = dump_opt['d']; 2454 int print_header = 1; 2455 unsigned i; 2456 int error; 2457 uint64_t total_slots_used = 0; 2458 uint64_t max_slot_used = 0; 2459 uint64_t dnode_slots; 2460 2461 /* make sure nicenum has enough space */ 2462 CTASSERT(sizeof (numbuf) >= NN_NUMBUF_SZ); 2463 2464 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 2465 dmu_objset_fast_stat(os, &dds); 2466 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 2467 2468 if (dds.dds_type < DMU_OST_NUMTYPES) 2469 type = objset_types[dds.dds_type]; 2470 2471 if (dds.dds_type == DMU_OST_META) { 2472 dds.dds_creation_txg = TXG_INITIAL; 2473 usedobjs = BP_GET_FILL(os->os_rootbp); 2474 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)-> 2475 dd_used_bytes; 2476 } else { 2477 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 2478 } 2479 2480 ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp)); 2481 2482 zdb_nicenum(refdbytes, numbuf, sizeof (numbuf)); 2483 2484 if (verbosity >= 4) { 2485 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp "); 2486 (void) snprintf_blkptr(blkbuf + strlen(blkbuf), 2487 sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp); 2488 } else { 2489 blkbuf[0] = '\0'; 2490 } 2491 2492 dmu_objset_name(os, osname); 2493 2494 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 2495 "%s, %llu objects%s%s\n", 2496 osname, type, (u_longlong_t)dmu_objset_id(os), 2497 (u_longlong_t)dds.dds_creation_txg, 2498 numbuf, (u_longlong_t)usedobjs, blkbuf, 2499 (dds.dds_inconsistent) ? " (inconsistent)" : ""); 2500 2501 if (zopt_objects != 0) { 2502 for (i = 0; i < zopt_objects; i++) 2503 dump_object(os, zopt_object[i], verbosity, 2504 &print_header, NULL); 2505 (void) printf("\n"); 2506 return; 2507 } 2508 2509 if (dump_opt['i'] != 0 || verbosity >= 2) 2510 dump_intent_log(dmu_objset_zil(os)); 2511 2512 if (dmu_objset_ds(os) != NULL) { 2513 dsl_dataset_t *ds = dmu_objset_ds(os); 2514 dump_deadlist(&ds->ds_deadlist); 2515 2516 if (dsl_dataset_remap_deadlist_exists(ds)) { 2517 (void) printf("ds_remap_deadlist:\n"); 2518 dump_deadlist(&ds->ds_remap_deadlist); 2519 } 2520 count_ds_mos_objects(ds); 2521 } 2522 2523 if (verbosity < 2) 2524 return; 2525 2526 if (BP_IS_HOLE(os->os_rootbp)) 2527 return; 2528 2529 dump_object(os, 0, verbosity, &print_header, NULL); 2530 object_count = 0; 2531 if (DMU_USERUSED_DNODE(os) != NULL && 2532 DMU_USERUSED_DNODE(os)->dn_type != 0) { 2533 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header, 2534 NULL); 2535 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header, 2536 NULL); 2537 } 2538 2539 if (DMU_PROJECTUSED_DNODE(os) != NULL && 2540 DMU_PROJECTUSED_DNODE(os)->dn_type != 0) 2541 dump_object(os, DMU_PROJECTUSED_OBJECT, verbosity, 2542 &print_header, NULL); 2543 2544 object = 0; 2545 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 2546 dump_object(os, object, verbosity, &print_header, &dnode_slots); 2547 object_count++; 2548 total_slots_used += dnode_slots; 2549 max_slot_used = object + dnode_slots - 1; 2550 } 2551 2552 (void) printf("\n"); 2553 2554 (void) printf(" Dnode slots:\n"); 2555 (void) printf("\tTotal used: %10llu\n", 2556 (u_longlong_t)total_slots_used); 2557 (void) printf("\tMax used: %10llu\n", 2558 (u_longlong_t)max_slot_used); 2559 (void) printf("\tPercent empty: %10lf\n", 2560 (double)(max_slot_used - total_slots_used)*100 / 2561 (double)max_slot_used); 2562 2563 (void) printf("\n"); 2564 2565 if (error != ESRCH) { 2566 (void) fprintf(stderr, "dmu_object_next() = %d\n", error); 2567 abort(); 2568 } 2569 if (leaked_objects != 0) { 2570 (void) printf("%d potentially leaked objects detected\n", 2571 leaked_objects); 2572 leaked_objects = 0; 2573 } 2574 2575 ASSERT3U(object_count, ==, usedobjs); 2576 } 2577 2578 static void 2579 dump_uberblock(uberblock_t *ub, const char *header, const char *footer) 2580 { 2581 time_t timestamp = ub->ub_timestamp; 2582 2583 (void) printf("%s", header ? header : ""); 2584 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 2585 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 2586 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 2587 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 2588 (void) printf("\ttimestamp = %llu UTC = %s", 2589 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 2590 2591 (void) printf("\tmmp_magic = %016llx\n", 2592 (u_longlong_t)ub->ub_mmp_magic); 2593 if (MMP_VALID(ub)) { 2594 (void) printf("\tmmp_delay = %0llu\n", 2595 (u_longlong_t)ub->ub_mmp_delay); 2596 if (MMP_SEQ_VALID(ub)) 2597 (void) printf("\tmmp_seq = %u\n", 2598 (unsigned int) MMP_SEQ(ub)); 2599 if (MMP_FAIL_INT_VALID(ub)) 2600 (void) printf("\tmmp_fail = %u\n", 2601 (unsigned int) MMP_FAIL_INT(ub)); 2602 if (MMP_INTERVAL_VALID(ub)) 2603 (void) printf("\tmmp_write = %u\n", 2604 (unsigned int) MMP_INTERVAL(ub)); 2605 /* After MMP_* to make summarize_uberblock_mmp cleaner */ 2606 (void) printf("\tmmp_valid = %x\n", 2607 (unsigned int) ub->ub_mmp_config & 0xFF); 2608 } 2609 2610 if (dump_opt['u'] >= 4) { 2611 char blkbuf[BP_SPRINTF_LEN]; 2612 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp); 2613 (void) printf("\trootbp = %s\n", blkbuf); 2614 } 2615 (void) printf("\tcheckpoint_txg = %llu\n", 2616 (u_longlong_t)ub->ub_checkpoint_txg); 2617 (void) printf("%s", footer ? footer : ""); 2618 } 2619 2620 static void 2621 dump_config(spa_t *spa) 2622 { 2623 dmu_buf_t *db; 2624 size_t nvsize = 0; 2625 int error = 0; 2626 2627 2628 error = dmu_bonus_hold(spa->spa_meta_objset, 2629 spa->spa_config_object, FTAG, &db); 2630 2631 if (error == 0) { 2632 nvsize = *(uint64_t *)db->db_data; 2633 dmu_buf_rele(db, FTAG); 2634 2635 (void) printf("\nMOS Configuration:\n"); 2636 dump_packed_nvlist(spa->spa_meta_objset, 2637 spa->spa_config_object, (void *)&nvsize, 1); 2638 } else { 2639 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d", 2640 (u_longlong_t)spa->spa_config_object, error); 2641 } 2642 } 2643 2644 static void 2645 dump_cachefile(const char *cachefile) 2646 { 2647 int fd; 2648 struct stat64 statbuf; 2649 char *buf; 2650 nvlist_t *config; 2651 2652 if ((fd = open64(cachefile, O_RDONLY)) < 0) { 2653 (void) printf("cannot open '%s': %s\n", cachefile, 2654 strerror(errno)); 2655 exit(1); 2656 } 2657 2658 if (fstat64(fd, &statbuf) != 0) { 2659 (void) printf("failed to stat '%s': %s\n", cachefile, 2660 strerror(errno)); 2661 exit(1); 2662 } 2663 2664 if ((buf = malloc(statbuf.st_size)) == NULL) { 2665 (void) fprintf(stderr, "failed to allocate %llu bytes\n", 2666 (u_longlong_t)statbuf.st_size); 2667 exit(1); 2668 } 2669 2670 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) { 2671 (void) fprintf(stderr, "failed to read %llu bytes\n", 2672 (u_longlong_t)statbuf.st_size); 2673 exit(1); 2674 } 2675 2676 (void) close(fd); 2677 2678 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) { 2679 (void) fprintf(stderr, "failed to unpack nvlist\n"); 2680 exit(1); 2681 } 2682 2683 free(buf); 2684 2685 dump_nvlist(config, 0); 2686 2687 nvlist_free(config); 2688 } 2689 2690 static void 2691 print_l2arc_header(void) 2692 { 2693 (void) printf("------------------------------------\n"); 2694 (void) printf("L2ARC device header\n"); 2695 (void) printf("------------------------------------\n"); 2696 } 2697 2698 static void 2699 print_l2arc_log_blocks(void) 2700 { 2701 (void) printf("------------------------------------\n"); 2702 (void) printf("L2ARC device log blocks\n"); 2703 (void) printf("------------------------------------\n"); 2704 } 2705 2706 static void 2707 dump_l2arc_log_entries(uint64_t log_entries, 2708 l2arc_log_ent_phys_t *le, uint64_t i) 2709 { 2710 for (uint64_t j = 0; j < log_entries; j++) { 2711 dva_t dva = le[j].le_dva; 2712 (void) printf("lb[%4llu]\tle[%4d]\tDVA asize: %llu, " 2713 "vdev: %llu, offset: %llu\n", 2714 (u_longlong_t)i, j + 1, 2715 (u_longlong_t)DVA_GET_ASIZE(&dva), 2716 (u_longlong_t)DVA_GET_VDEV(&dva), 2717 (u_longlong_t)DVA_GET_OFFSET(&dva)); 2718 (void) printf("|\t\t\t\tbirth: %llu\n", 2719 (u_longlong_t)le[j].le_birth); 2720 (void) printf("|\t\t\t\tlsize: %llu\n", 2721 (u_longlong_t)L2BLK_GET_LSIZE((&le[j])->le_prop)); 2722 (void) printf("|\t\t\t\tpsize: %llu\n", 2723 (u_longlong_t)L2BLK_GET_PSIZE((&le[j])->le_prop)); 2724 (void) printf("|\t\t\t\tcompr: %llu\n", 2725 (u_longlong_t)L2BLK_GET_COMPRESS((&le[j])->le_prop)); 2726 (void) printf("|\t\t\t\ttype: %llu\n", 2727 (u_longlong_t)L2BLK_GET_TYPE((&le[j])->le_prop)); 2728 (void) printf("|\t\t\t\tprotected: %llu\n", 2729 (u_longlong_t)L2BLK_GET_PROTECTED((&le[j])->le_prop)); 2730 (void) printf("|\t\t\t\tprefetch: %llu\n", 2731 (u_longlong_t)L2BLK_GET_PREFETCH((&le[j])->le_prop)); 2732 (void) printf("|\t\t\t\taddress: %llu\n", 2733 (u_longlong_t)le[j].le_daddr); 2734 (void) printf("|\t\t\t\tARC state: %llu\n", 2735 (u_longlong_t)L2BLK_GET_STATE((&le[j])->le_prop)); 2736 (void) printf("|\n"); 2737 } 2738 (void) printf("\n"); 2739 } 2740 2741 static void 2742 dump_l2arc_log_blkptr(l2arc_log_blkptr_t lbps) 2743 { 2744 (void) printf("|\t\tdaddr: %llu\n", (u_longlong_t)lbps.lbp_daddr); 2745 (void) printf("|\t\tpayload_asize: %llu\n", 2746 (u_longlong_t)lbps.lbp_payload_asize); 2747 (void) printf("|\t\tpayload_start: %llu\n", 2748 (u_longlong_t)lbps.lbp_payload_start); 2749 (void) printf("|\t\tlsize: %llu\n", 2750 (u_longlong_t)L2BLK_GET_LSIZE((&lbps)->lbp_prop)); 2751 (void) printf("|\t\tasize: %llu\n", 2752 (u_longlong_t)L2BLK_GET_PSIZE((&lbps)->lbp_prop)); 2753 (void) printf("|\t\tcompralgo: %llu\n", 2754 (u_longlong_t)L2BLK_GET_COMPRESS((&lbps)->lbp_prop)); 2755 (void) printf("|\t\tcksumalgo: %llu\n", 2756 (u_longlong_t)L2BLK_GET_CHECKSUM((&lbps)->lbp_prop)); 2757 (void) printf("|\n\n"); 2758 } 2759 2760 static void 2761 dump_l2arc_log_blocks(int fd, l2arc_dev_hdr_phys_t l2dhdr, 2762 l2arc_dev_hdr_phys_t *rebuild) 2763 { 2764 l2arc_log_blk_phys_t this_lb; 2765 uint64_t asize; 2766 l2arc_log_blkptr_t lbps[2]; 2767 abd_t *abd; 2768 zio_cksum_t cksum; 2769 int failed = 0; 2770 l2arc_dev_t dev; 2771 2772 if (!dump_opt['q']) 2773 print_l2arc_log_blocks(); 2774 bcopy((&l2dhdr)->dh_start_lbps, lbps, sizeof (lbps)); 2775 2776 dev.l2ad_evict = l2dhdr.dh_evict; 2777 dev.l2ad_start = l2dhdr.dh_start; 2778 dev.l2ad_end = l2dhdr.dh_end; 2779 2780 if (l2dhdr.dh_start_lbps[0].lbp_daddr == 0) { 2781 /* no log blocks to read */ 2782 if (!dump_opt['q']) { 2783 (void) printf("No log blocks to read\n"); 2784 (void) printf("\n"); 2785 } 2786 return; 2787 } else { 2788 dev.l2ad_hand = lbps[0].lbp_daddr + 2789 L2BLK_GET_PSIZE((&lbps[0])->lbp_prop); 2790 } 2791 2792 dev.l2ad_first = !!(l2dhdr.dh_flags & L2ARC_DEV_HDR_EVICT_FIRST); 2793 2794 for (;;) { 2795 if (!l2arc_log_blkptr_valid(&dev, &lbps[0])) 2796 break; 2797 2798 /* L2BLK_GET_PSIZE returns aligned size for log blocks */ 2799 asize = L2BLK_GET_PSIZE((&lbps[0])->lbp_prop); 2800 if (pread64(fd, &this_lb, asize, lbps[0].lbp_daddr) != 2801 (ssize_t)asize) { 2802 if (!dump_opt['q']) { 2803 (void) printf("Error while reading next log " 2804 "block\n\n"); 2805 } 2806 break; 2807 } 2808 2809 fletcher_4_native(&this_lb, asize, NULL, &cksum); 2810 if (!ZIO_CHECKSUM_EQUAL(cksum, lbps[0].lbp_cksum)) { 2811 failed++; 2812 if (!dump_opt['q']) { 2813 (void) printf("Invalid cksum\n"); 2814 dump_l2arc_log_blkptr(lbps[0]); 2815 } 2816 break; 2817 } 2818 2819 switch (L2BLK_GET_COMPRESS((&lbps[0])->lbp_prop)) { 2820 case ZIO_COMPRESS_OFF: 2821 break; 2822 case ZIO_COMPRESS_LZ4: 2823 abd = abd_alloc_for_io(asize, B_TRUE); 2824 abd_copy_from_buf_off(abd, &this_lb, 0, asize); 2825 zio_decompress_data(L2BLK_GET_COMPRESS( 2826 (&lbps[0])->lbp_prop), abd, &this_lb, 2827 asize, sizeof (this_lb)); 2828 abd_free(abd); 2829 break; 2830 default: 2831 break; 2832 } 2833 2834 if (this_lb.lb_magic == BSWAP_64(L2ARC_LOG_BLK_MAGIC)) 2835 byteswap_uint64_array(&this_lb, sizeof (this_lb)); 2836 if (this_lb.lb_magic != L2ARC_LOG_BLK_MAGIC) { 2837 if (!dump_opt['q']) 2838 (void) printf("Invalid log block magic\n\n"); 2839 break; 2840 } 2841 2842 rebuild->dh_lb_count++; 2843 rebuild->dh_lb_asize += asize; 2844 if (dump_opt['l'] > 1 && !dump_opt['q']) { 2845 (void) printf("lb[%4llu]\tmagic: %llu\n", 2846 (u_longlong_t)rebuild->dh_lb_count, 2847 (u_longlong_t)this_lb.lb_magic); 2848 dump_l2arc_log_blkptr(lbps[0]); 2849 } 2850 2851 if (dump_opt['l'] > 2 && !dump_opt['q']) 2852 dump_l2arc_log_entries(l2dhdr.dh_log_entries, 2853 this_lb.lb_entries, 2854 rebuild->dh_lb_count); 2855 2856 if (l2arc_range_check_overlap(lbps[1].lbp_payload_start, 2857 lbps[0].lbp_payload_start, dev.l2ad_evict) && 2858 !dev.l2ad_first) 2859 break; 2860 2861 lbps[0] = lbps[1]; 2862 lbps[1] = this_lb.lb_prev_lbp; 2863 } 2864 2865 if (!dump_opt['q']) { 2866 (void) printf("log_blk_count:\t %llu with valid cksum\n", 2867 (u_longlong_t)rebuild->dh_lb_count); 2868 (void) printf("\t\t %d with invalid cksum\n", failed); 2869 (void) printf("log_blk_asize:\t %llu\n\n", 2870 (u_longlong_t)rebuild->dh_lb_asize); 2871 } 2872 } 2873 2874 static int 2875 dump_l2arc_header(int fd) 2876 { 2877 l2arc_dev_hdr_phys_t l2dhdr, rebuild; 2878 int error = B_FALSE; 2879 2880 bzero(&l2dhdr, sizeof (l2dhdr)); 2881 bzero(&rebuild, sizeof (rebuild)); 2882 2883 if (pread64(fd, &l2dhdr, sizeof (l2dhdr), 2884 VDEV_LABEL_START_SIZE) != sizeof (l2dhdr)) { 2885 error = B_TRUE; 2886 } else { 2887 if (l2dhdr.dh_magic == BSWAP_64(L2ARC_DEV_HDR_MAGIC)) 2888 byteswap_uint64_array(&l2dhdr, sizeof (l2dhdr)); 2889 2890 if (l2dhdr.dh_magic != L2ARC_DEV_HDR_MAGIC) 2891 error = B_TRUE; 2892 } 2893 2894 if (error) { 2895 (void) printf("L2ARC device header not found\n\n"); 2896 /* Do not return an error here for backward compatibility */ 2897 return (0); 2898 } else if (!dump_opt['q']) { 2899 print_l2arc_header(); 2900 2901 (void) printf(" magic: %llu\n", 2902 (u_longlong_t)l2dhdr.dh_magic); 2903 (void) printf(" version: %llu\n", 2904 (u_longlong_t)l2dhdr.dh_version); 2905 (void) printf(" pool_guid: %llu\n", 2906 (u_longlong_t)l2dhdr.dh_spa_guid); 2907 (void) printf(" flags: %llu\n", 2908 (u_longlong_t)l2dhdr.dh_flags); 2909 (void) printf(" start_lbps[0]: %llu\n", 2910 (u_longlong_t) 2911 l2dhdr.dh_start_lbps[0].lbp_daddr); 2912 (void) printf(" start_lbps[1]: %llu\n", 2913 (u_longlong_t) 2914 l2dhdr.dh_start_lbps[1].lbp_daddr); 2915 (void) printf(" log_blk_ent: %llu\n", 2916 (u_longlong_t)l2dhdr.dh_log_entries); 2917 (void) printf(" start: %llu\n", 2918 (u_longlong_t)l2dhdr.dh_start); 2919 (void) printf(" end: %llu\n", 2920 (u_longlong_t)l2dhdr.dh_end); 2921 (void) printf(" evict: %llu\n", 2922 (u_longlong_t)l2dhdr.dh_evict); 2923 (void) printf(" lb_asize_refcount: %llu\n", 2924 (u_longlong_t)l2dhdr.dh_lb_asize); 2925 (void) printf(" lb_count_refcount: %llu\n\n", 2926 (u_longlong_t)l2dhdr.dh_lb_count); 2927 } 2928 2929 dump_l2arc_log_blocks(fd, l2dhdr, &rebuild); 2930 /* 2931 * The total aligned size of log blocks and the number of log blocks 2932 * reported in the header of the device may be less than what zdb 2933 * reports by dump_l2arc_log_blocks() which emulates l2arc_rebuild(). 2934 * This happens because dump_l2arc_log_blocks() lacks the memory 2935 * pressure valve that l2arc_rebuild() has. Thus, if we are on a system 2936 * with low memory, l2arc_rebuild will exit prematurely and dh_lb_asize 2937 * and dh_lb_count will be lower to begin with than what exists on the 2938 * device. This is normal and zdb should not exit with an error. The 2939 * opposite case should never happen though, the values reported in the 2940 * header should never be higher than what dump_l2arc_log_blocks() and 2941 * l2arc_rebuild() report. If this happens there is a leak in the 2942 * accounting of log blocks. 2943 */ 2944 if (l2dhdr.dh_lb_asize > rebuild.dh_lb_asize || 2945 l2dhdr.dh_lb_count > rebuild.dh_lb_count) 2946 return (1); 2947 2948 return (0); 2949 } 2950 2951 static char curpath[PATH_MAX]; 2952 2953 /* 2954 * Iterate through the path components, recursively passing 2955 * current one's obj and remaining path until we find the obj 2956 * for the last one. 2957 */ 2958 static int 2959 dump_path_impl(objset_t *os, uint64_t obj, char *name) 2960 { 2961 int err; 2962 int header = 1; 2963 uint64_t child_obj; 2964 char *s; 2965 dmu_buf_t *db; 2966 dmu_object_info_t doi; 2967 2968 if ((s = strchr(name, '/')) != NULL) 2969 *s = '\0'; 2970 err = zap_lookup(os, obj, name, 8, 1, &child_obj); 2971 2972 (void) strlcat(curpath, name, sizeof (curpath)); 2973 2974 if (err != 0) { 2975 (void) fprintf(stderr, "failed to lookup %s: %s\n", 2976 curpath, strerror(err)); 2977 return (err); 2978 } 2979 2980 child_obj = ZFS_DIRENT_OBJ(child_obj); 2981 err = sa_buf_hold(os, child_obj, FTAG, &db); 2982 if (err != 0) { 2983 (void) fprintf(stderr, 2984 "failed to get SA dbuf for obj %llu: %s\n", 2985 (u_longlong_t)child_obj, strerror(err)); 2986 return (EINVAL); 2987 } 2988 dmu_object_info_from_db(db, &doi); 2989 sa_buf_rele(db, FTAG); 2990 2991 if (doi.doi_bonus_type != DMU_OT_SA && 2992 doi.doi_bonus_type != DMU_OT_ZNODE) { 2993 (void) fprintf(stderr, "invalid bonus type %d for obj %llu\n", 2994 doi.doi_bonus_type, (u_longlong_t)child_obj); 2995 return (EINVAL); 2996 } 2997 2998 if (dump_opt['v'] > 6) { 2999 (void) printf("obj=%llu %s type=%d bonustype=%d\n", 3000 (u_longlong_t)child_obj, curpath, doi.doi_type, 3001 doi.doi_bonus_type); 3002 } 3003 3004 (void) strlcat(curpath, "/", sizeof (curpath)); 3005 3006 switch (doi.doi_type) { 3007 case DMU_OT_DIRECTORY_CONTENTS: 3008 if (s != NULL && *(s + 1) != '\0') 3009 return (dump_path_impl(os, child_obj, s + 1)); 3010 /*FALLTHROUGH*/ 3011 case DMU_OT_PLAIN_FILE_CONTENTS: 3012 dump_object(os, child_obj, dump_opt['v'], &header, NULL); 3013 return (0); 3014 default: 3015 (void) fprintf(stderr, "object %llu has non-file/directory " 3016 "type %d\n", (u_longlong_t)obj, doi.doi_type); 3017 break; 3018 } 3019 3020 return (EINVAL); 3021 } 3022 3023 /* 3024 * Dump the blocks for the object specified by path inside the dataset. 3025 */ 3026 static int 3027 dump_path(char *ds, char *path) 3028 { 3029 int err; 3030 objset_t *os; 3031 uint64_t root_obj; 3032 3033 err = open_objset(ds, DMU_OST_ZFS, FTAG, &os); 3034 if (err != 0) 3035 return (err); 3036 3037 err = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1, &root_obj); 3038 if (err != 0) { 3039 (void) fprintf(stderr, "can't lookup root znode: %s\n", 3040 strerror(err)); 3041 dmu_objset_disown(os, B_FALSE, FTAG); 3042 return (EINVAL); 3043 } 3044 3045 (void) snprintf(curpath, sizeof (curpath), "dataset=%s path=/", ds); 3046 3047 err = dump_path_impl(os, root_obj, path); 3048 3049 close_objset(os, FTAG); 3050 return (err); 3051 } 3052 3053 typedef struct cksum_record { 3054 zio_cksum_t cksum; 3055 boolean_t labels[VDEV_LABELS]; 3056 avl_node_t link; 3057 } cksum_record_t; 3058 3059 static int 3060 cksum_record_compare(const void *x1, const void *x2) 3061 { 3062 const cksum_record_t *l = (cksum_record_t *)x1; 3063 const cksum_record_t *r = (cksum_record_t *)x2; 3064 int arraysize = ARRAY_SIZE(l->cksum.zc_word); 3065 int difference; 3066 3067 for (int i = 0; i < arraysize; i++) { 3068 difference = AVL_CMP(l->cksum.zc_word[i], r->cksum.zc_word[i]); 3069 if (difference) 3070 break; 3071 } 3072 3073 return (difference); 3074 } 3075 3076 static cksum_record_t * 3077 cksum_record_alloc(zio_cksum_t *cksum, int l) 3078 { 3079 cksum_record_t *rec; 3080 3081 rec = umem_zalloc(sizeof (*rec), UMEM_NOFAIL); 3082 rec->cksum = *cksum; 3083 rec->labels[l] = B_TRUE; 3084 3085 return (rec); 3086 } 3087 3088 static cksum_record_t * 3089 cksum_record_lookup(avl_tree_t *tree, zio_cksum_t *cksum) 3090 { 3091 cksum_record_t lookup = { .cksum = *cksum }; 3092 avl_index_t where; 3093 3094 return (avl_find(tree, &lookup, &where)); 3095 } 3096 3097 static cksum_record_t * 3098 cksum_record_insert(avl_tree_t *tree, zio_cksum_t *cksum, int l) 3099 { 3100 cksum_record_t *rec; 3101 3102 rec = cksum_record_lookup(tree, cksum); 3103 if (rec) { 3104 rec->labels[l] = B_TRUE; 3105 } else { 3106 rec = cksum_record_alloc(cksum, l); 3107 avl_add(tree, rec); 3108 } 3109 3110 return (rec); 3111 } 3112 3113 static int 3114 first_label(cksum_record_t *rec) 3115 { 3116 for (int i = 0; i < VDEV_LABELS; i++) 3117 if (rec->labels[i]) 3118 return (i); 3119 3120 return (-1); 3121 } 3122 3123 static void 3124 print_label_numbers(char *prefix, cksum_record_t *rec) 3125 { 3126 printf("%s", prefix); 3127 for (int i = 0; i < VDEV_LABELS; i++) 3128 if (rec->labels[i] == B_TRUE) 3129 printf("%d ", i); 3130 printf("\n"); 3131 } 3132 3133 #define MAX_UBERBLOCK_COUNT (VDEV_UBERBLOCK_RING >> UBERBLOCK_SHIFT) 3134 3135 typedef struct zdb_label { 3136 vdev_label_t label; 3137 nvlist_t *config_nv; 3138 cksum_record_t *config; 3139 cksum_record_t *uberblocks[MAX_UBERBLOCK_COUNT]; 3140 boolean_t header_printed; 3141 boolean_t read_failed; 3142 } zdb_label_t; 3143 3144 static void 3145 print_label_header(zdb_label_t *label, int l) 3146 { 3147 3148 if (dump_opt['q']) 3149 return; 3150 3151 if (label->header_printed == B_TRUE) 3152 return; 3153 3154 (void) printf("------------------------------------\n"); 3155 (void) printf("LABEL %d\n", l); 3156 (void) printf("------------------------------------\n"); 3157 3158 label->header_printed = B_TRUE; 3159 } 3160 3161 static void 3162 dump_config_from_label(zdb_label_t *label, size_t buflen, int l) 3163 { 3164 if (dump_opt['q']) 3165 return; 3166 3167 if ((dump_opt['l'] < 3) && (first_label(label->config) != l)) 3168 return; 3169 3170 print_label_header(label, l); 3171 dump_nvlist(label->config_nv, 4); 3172 print_label_numbers(" labels = ", label->config); 3173 } 3174 3175 #define ZDB_MAX_UB_HEADER_SIZE 32 3176 3177 static void 3178 dump_label_uberblocks(zdb_label_t *label, uint64_t ashift, int label_num) 3179 { 3180 vdev_t vd; 3181 char header[ZDB_MAX_UB_HEADER_SIZE]; 3182 3183 vd.vdev_ashift = ashift; 3184 vd.vdev_top = &vd; 3185 3186 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(&vd); i++) { 3187 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(&vd, i); 3188 uberblock_t *ub = (void *)((char *)&label->label + uoff); 3189 cksum_record_t *rec = label->uberblocks[i]; 3190 3191 if (rec == NULL) { 3192 if (dump_opt['u'] >= 2) { 3193 print_label_header(label, label_num); 3194 (void) printf(" Uberblock[%d] invalid\n", i); 3195 } 3196 continue; 3197 } 3198 3199 if ((dump_opt['u'] < 3) && (first_label(rec) != label_num)) 3200 continue; 3201 3202 print_label_header(label, label_num); 3203 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE, 3204 " Uberblock[%d]\n", i); 3205 dump_uberblock(ub, header, ""); 3206 print_label_numbers(" labels = ", rec); 3207 } 3208 } 3209 3210 static int 3211 dump_label(const char *dev) 3212 { 3213 char path[MAXPATHLEN]; 3214 zdb_label_t labels[VDEV_LABELS]; 3215 uint64_t psize, ashift, l2cache; 3216 struct stat64 statbuf; 3217 boolean_t config_found = B_FALSE; 3218 boolean_t error = B_FALSE; 3219 boolean_t read_l2arc_header = B_FALSE; 3220 avl_tree_t config_tree; 3221 avl_tree_t uberblock_tree; 3222 void *node, *cookie; 3223 int fd; 3224 3225 bzero(labels, sizeof (labels)); 3226 3227 (void) strlcpy(path, dev, sizeof (path)); 3228 if (dev[0] == '/') { 3229 if (strncmp(dev, ZFS_DISK_ROOTD, 3230 strlen(ZFS_DISK_ROOTD)) == 0) { 3231 (void) snprintf(path, sizeof (path), "%s%s", 3232 ZFS_RDISK_ROOTD, dev + strlen(ZFS_DISK_ROOTD)); 3233 } 3234 } else if (stat64(path, &statbuf) != 0) { 3235 char *s; 3236 3237 (void) snprintf(path, sizeof (path), "%s%s", ZFS_RDISK_ROOTD, 3238 dev); 3239 if (((s = strrchr(dev, 's')) == NULL && 3240 (s = strchr(dev, 'p')) == NULL) || 3241 !isdigit(*(s + 1))) 3242 (void) strlcat(path, "s0", sizeof (path)); 3243 } 3244 3245 if ((fd = open64(path, O_RDONLY)) < 0) { 3246 (void) fprintf(stderr, "cannot open '%s': %s\n", path, 3247 strerror(errno)); 3248 exit(1); 3249 } 3250 3251 if (fstat64(fd, &statbuf) != 0) { 3252 (void) fprintf(stderr, "failed to stat '%s': %s\n", path, 3253 strerror(errno)); 3254 (void) close(fd); 3255 exit(1); 3256 } 3257 3258 if (S_ISBLK(statbuf.st_mode)) { 3259 (void) fprintf(stderr, 3260 "cannot use '%s': character device required\n", path); 3261 (void) close(fd); 3262 exit(1); 3263 } 3264 3265 avl_create(&config_tree, cksum_record_compare, 3266 sizeof (cksum_record_t), offsetof(cksum_record_t, link)); 3267 avl_create(&uberblock_tree, cksum_record_compare, 3268 sizeof (cksum_record_t), offsetof(cksum_record_t, link)); 3269 3270 psize = statbuf.st_size; 3271 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 3272 ashift = SPA_MINBLOCKSHIFT; 3273 3274 /* 3275 * 1. Read the label from disk 3276 * 2. Unpack the configuration and insert in config tree. 3277 * 3. Traverse all uberblocks and insert in uberblock tree. 3278 */ 3279 for (int l = 0; l < VDEV_LABELS; l++) { 3280 zdb_label_t *label = &labels[l]; 3281 char *buf = label->label.vl_vdev_phys.vp_nvlist; 3282 size_t buflen = sizeof (label->label.vl_vdev_phys.vp_nvlist); 3283 nvlist_t *config; 3284 cksum_record_t *rec; 3285 zio_cksum_t cksum; 3286 vdev_t vd; 3287 3288 if (pread64(fd, &label->label, sizeof (label->label), 3289 vdev_label_offset(psize, l, 0)) != sizeof (label->label)) { 3290 if (!dump_opt['q']) 3291 (void) printf("failed to read label %d\n", l); 3292 label->read_failed = B_TRUE; 3293 error = B_TRUE; 3294 continue; 3295 } 3296 3297 label->read_failed = B_FALSE; 3298 3299 if (nvlist_unpack(buf, buflen, &config, 0) == 0) { 3300 nvlist_t *vdev_tree = NULL; 3301 size_t size; 3302 3303 if ((nvlist_lookup_nvlist(config, 3304 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) || 3305 (nvlist_lookup_uint64(vdev_tree, 3306 ZPOOL_CONFIG_ASHIFT, &ashift) != 0)) 3307 ashift = SPA_MINBLOCKSHIFT; 3308 3309 /* If the device is a cache device clear the header. */ 3310 if (!read_l2arc_header) { 3311 if (nvlist_lookup_uint64(config, 3312 ZPOOL_CONFIG_POOL_STATE, &l2cache) == 0 && 3313 l2cache == POOL_STATE_L2CACHE) { 3314 read_l2arc_header = B_TRUE; 3315 } 3316 } 3317 3318 if (nvlist_size(config, &size, NV_ENCODE_XDR) != 0) 3319 size = buflen; 3320 3321 fletcher_4_native(buf, size, NULL, &cksum); 3322 rec = cksum_record_insert(&config_tree, &cksum, l); 3323 3324 label->config = rec; 3325 label->config_nv = config; 3326 config_found = B_TRUE; 3327 } else { 3328 error = B_TRUE; 3329 } 3330 3331 vd.vdev_ashift = ashift; 3332 vd.vdev_top = &vd; 3333 3334 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(&vd); i++) { 3335 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(&vd, i); 3336 uberblock_t *ub = (void *)((char *)label + uoff); 3337 3338 if (uberblock_verify(ub)) 3339 continue; 3340 3341 fletcher_4_native(ub, sizeof (*ub), NULL, &cksum); 3342 rec = cksum_record_insert(&uberblock_tree, &cksum, l); 3343 3344 label->uberblocks[i] = rec; 3345 } 3346 } 3347 3348 /* 3349 * Dump the label and uberblocks. 3350 */ 3351 for (int l = 0; l < VDEV_LABELS; l++) { 3352 zdb_label_t *label = &labels[l]; 3353 size_t buflen = sizeof (label->label.vl_vdev_phys.vp_nvlist); 3354 3355 if (label->read_failed == B_TRUE) 3356 continue; 3357 3358 if (label->config_nv) { 3359 dump_config_from_label(label, buflen, l); 3360 } else { 3361 if (!dump_opt['q']) 3362 (void) printf("failed to unpack label %d\n", l); 3363 } 3364 3365 if (dump_opt['u']) 3366 dump_label_uberblocks(label, ashift, l); 3367 3368 nvlist_free(label->config_nv); 3369 } 3370 3371 /* 3372 * Dump the L2ARC header, if existent. 3373 */ 3374 if (read_l2arc_header) 3375 error |= dump_l2arc_header(fd); 3376 3377 cookie = NULL; 3378 while ((node = avl_destroy_nodes(&config_tree, &cookie)) != NULL) 3379 umem_free(node, sizeof (cksum_record_t)); 3380 3381 cookie = NULL; 3382 while ((node = avl_destroy_nodes(&uberblock_tree, &cookie)) != NULL) 3383 umem_free(node, sizeof (cksum_record_t)); 3384 3385 avl_destroy(&config_tree); 3386 avl_destroy(&uberblock_tree); 3387 3388 (void) close(fd); 3389 3390 return (config_found == B_FALSE ? 2 : 3391 (error == B_TRUE ? 1 : 0)); 3392 } 3393 3394 static uint64_t dataset_feature_count[SPA_FEATURES]; 3395 static uint64_t remap_deadlist_count = 0; 3396 3397 static int 3398 dump_one_dir(const char *dsname, void *arg __unused) 3399 { 3400 int error; 3401 objset_t *os; 3402 3403 error = open_objset(dsname, DMU_OST_ANY, FTAG, &os); 3404 if (error != 0) 3405 return (0); 3406 3407 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 3408 if (!dsl_dataset_feature_is_active(dmu_objset_ds(os), f)) 3409 continue; 3410 ASSERT(spa_feature_table[f].fi_flags & 3411 ZFEATURE_FLAG_PER_DATASET); 3412 dataset_feature_count[f]++; 3413 } 3414 3415 if (dsl_dataset_remap_deadlist_exists(dmu_objset_ds(os))) { 3416 remap_deadlist_count++; 3417 } 3418 3419 dump_dir(os); 3420 close_objset(os, FTAG); 3421 fuid_table_destroy(); 3422 return (0); 3423 } 3424 3425 /* 3426 * Block statistics. 3427 */ 3428 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2) 3429 typedef struct zdb_blkstats { 3430 uint64_t zb_asize; 3431 uint64_t zb_lsize; 3432 uint64_t zb_psize; 3433 uint64_t zb_count; 3434 uint64_t zb_gangs; 3435 uint64_t zb_ditto_samevdev; 3436 uint64_t zb_ditto_same_ms; 3437 uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE]; 3438 } zdb_blkstats_t; 3439 3440 /* 3441 * Extended object types to report deferred frees and dedup auto-ditto blocks. 3442 */ 3443 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0) 3444 #define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1) 3445 #define ZDB_OT_OTHER (DMU_OT_NUMTYPES + 2) 3446 #define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 3) 3447 3448 static const char *zdb_ot_extname[] = { 3449 "deferred free", 3450 "dedup ditto", 3451 "other", 3452 "Total", 3453 }; 3454 3455 #define ZB_TOTAL DN_MAX_LEVELS 3456 3457 typedef struct zdb_cb { 3458 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1]; 3459 uint64_t zcb_removing_size; 3460 uint64_t zcb_checkpoint_size; 3461 uint64_t zcb_dedup_asize; 3462 uint64_t zcb_dedup_blocks; 3463 uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES]; 3464 uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES] 3465 [BPE_PAYLOAD_SIZE]; 3466 uint64_t zcb_start; 3467 hrtime_t zcb_lastprint; 3468 uint64_t zcb_totalasize; 3469 uint64_t zcb_errors[256]; 3470 int zcb_readfails; 3471 int zcb_haderrors; 3472 spa_t *zcb_spa; 3473 uint32_t **zcb_vd_obsolete_counts; 3474 } zdb_cb_t; 3475 3476 /* test if two DVA offsets from same vdev are within the same metaslab */ 3477 static boolean_t 3478 same_metaslab(spa_t *spa, uint64_t vdev, uint64_t off1, uint64_t off2) 3479 { 3480 vdev_t *vd = vdev_lookup_top(spa, vdev); 3481 uint64_t ms_shift = vd->vdev_ms_shift; 3482 3483 return ((off1 >> ms_shift) == (off2 >> ms_shift)); 3484 } 3485 3486 static void 3487 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp, 3488 dmu_object_type_t type) 3489 { 3490 uint64_t refcnt = 0; 3491 3492 ASSERT(type < ZDB_OT_TOTAL); 3493 3494 if (zilog && zil_bp_tree_add(zilog, bp) != 0) 3495 return; 3496 3497 spa_config_enter(zcb->zcb_spa, SCL_CONFIG, FTAG, RW_READER); 3498 3499 for (int i = 0; i < 4; i++) { 3500 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 3501 int t = (i & 1) ? type : ZDB_OT_TOTAL; 3502 int equal; 3503 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 3504 3505 zb->zb_asize += BP_GET_ASIZE(bp); 3506 zb->zb_lsize += BP_GET_LSIZE(bp); 3507 zb->zb_psize += BP_GET_PSIZE(bp); 3508 zb->zb_count++; 3509 3510 /* 3511 * The histogram is only big enough to record blocks up to 3512 * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last, 3513 * "other", bucket. 3514 */ 3515 unsigned idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT; 3516 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1); 3517 zb->zb_psize_histogram[idx]++; 3518 3519 zb->zb_gangs += BP_COUNT_GANG(bp); 3520 3521 switch (BP_GET_NDVAS(bp)) { 3522 case 2: 3523 if (DVA_GET_VDEV(&bp->blk_dva[0]) == 3524 DVA_GET_VDEV(&bp->blk_dva[1])) { 3525 zb->zb_ditto_samevdev++; 3526 3527 if (same_metaslab(zcb->zcb_spa, 3528 DVA_GET_VDEV(&bp->blk_dva[0]), 3529 DVA_GET_OFFSET(&bp->blk_dva[0]), 3530 DVA_GET_OFFSET(&bp->blk_dva[1]))) 3531 zb->zb_ditto_same_ms++; 3532 } 3533 break; 3534 case 3: 3535 equal = (DVA_GET_VDEV(&bp->blk_dva[0]) == 3536 DVA_GET_VDEV(&bp->blk_dva[1])) + 3537 (DVA_GET_VDEV(&bp->blk_dva[0]) == 3538 DVA_GET_VDEV(&bp->blk_dva[2])) + 3539 (DVA_GET_VDEV(&bp->blk_dva[1]) == 3540 DVA_GET_VDEV(&bp->blk_dva[2])); 3541 if (equal != 0) { 3542 zb->zb_ditto_samevdev++; 3543 3544 if (DVA_GET_VDEV(&bp->blk_dva[0]) == 3545 DVA_GET_VDEV(&bp->blk_dva[1]) && 3546 same_metaslab(zcb->zcb_spa, 3547 DVA_GET_VDEV(&bp->blk_dva[0]), 3548 DVA_GET_OFFSET(&bp->blk_dva[0]), 3549 DVA_GET_OFFSET(&bp->blk_dva[1]))) 3550 zb->zb_ditto_same_ms++; 3551 else if (DVA_GET_VDEV(&bp->blk_dva[0]) == 3552 DVA_GET_VDEV(&bp->blk_dva[2]) && 3553 same_metaslab(zcb->zcb_spa, 3554 DVA_GET_VDEV(&bp->blk_dva[0]), 3555 DVA_GET_OFFSET(&bp->blk_dva[0]), 3556 DVA_GET_OFFSET(&bp->blk_dva[2]))) 3557 zb->zb_ditto_same_ms++; 3558 else if (DVA_GET_VDEV(&bp->blk_dva[1]) == 3559 DVA_GET_VDEV(&bp->blk_dva[2]) && 3560 same_metaslab(zcb->zcb_spa, 3561 DVA_GET_VDEV(&bp->blk_dva[1]), 3562 DVA_GET_OFFSET(&bp->blk_dva[1]), 3563 DVA_GET_OFFSET(&bp->blk_dva[2]))) 3564 zb->zb_ditto_same_ms++; 3565 } 3566 break; 3567 } 3568 } 3569 3570 spa_config_exit(zcb->zcb_spa, SCL_CONFIG, FTAG); 3571 3572 if (BP_IS_EMBEDDED(bp)) { 3573 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++; 3574 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)] 3575 [BPE_GET_PSIZE(bp)]++; 3576 return; 3577 } 3578 3579 if (dump_opt['L']) 3580 return; 3581 3582 if (BP_GET_DEDUP(bp)) { 3583 ddt_t *ddt; 3584 ddt_entry_t *dde; 3585 3586 ddt = ddt_select(zcb->zcb_spa, bp); 3587 ddt_enter(ddt); 3588 dde = ddt_lookup(ddt, bp, B_FALSE); 3589 3590 if (dde == NULL) { 3591 refcnt = 0; 3592 } else { 3593 ddt_phys_t *ddp = ddt_phys_select(dde, bp); 3594 ddt_phys_decref(ddp); 3595 refcnt = ddp->ddp_refcnt; 3596 if (ddt_phys_total_refcnt(dde) == 0) 3597 ddt_remove(ddt, dde); 3598 } 3599 ddt_exit(ddt); 3600 } 3601 3602 VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa, 3603 refcnt ? 0 : spa_min_claim_txg(zcb->zcb_spa), 3604 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0); 3605 } 3606 3607 static void 3608 zdb_blkptr_done(zio_t *zio) 3609 { 3610 spa_t *spa = zio->io_spa; 3611 blkptr_t *bp = zio->io_bp; 3612 int ioerr = zio->io_error; 3613 zdb_cb_t *zcb = zio->io_private; 3614 zbookmark_phys_t *zb = &zio->io_bookmark; 3615 3616 abd_free(zio->io_abd); 3617 3618 mutex_enter(&spa->spa_scrub_lock); 3619 spa->spa_load_verify_ios--; 3620 cv_broadcast(&spa->spa_scrub_io_cv); 3621 3622 if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { 3623 char blkbuf[BP_SPRINTF_LEN]; 3624 3625 zcb->zcb_haderrors = 1; 3626 zcb->zcb_errors[ioerr]++; 3627 3628 if (dump_opt['b'] >= 2) 3629 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3630 else 3631 blkbuf[0] = '\0'; 3632 3633 (void) printf("zdb_blkptr_cb: " 3634 "Got error %d reading " 3635 "<%llu, %llu, %lld, %llx> %s -- skipping\n", 3636 ioerr, 3637 (u_longlong_t)zb->zb_objset, 3638 (u_longlong_t)zb->zb_object, 3639 (u_longlong_t)zb->zb_level, 3640 (u_longlong_t)zb->zb_blkid, 3641 blkbuf); 3642 } 3643 mutex_exit(&spa->spa_scrub_lock); 3644 } 3645 3646 static int 3647 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 3648 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 3649 { 3650 zdb_cb_t *zcb = arg; 3651 dmu_object_type_t type; 3652 boolean_t is_metadata; 3653 3654 if (bp == NULL) 3655 return (0); 3656 3657 if (dump_opt['b'] >= 5 && bp->blk_birth > 0) { 3658 char blkbuf[BP_SPRINTF_LEN]; 3659 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3660 (void) printf("objset %llu object %llu " 3661 "level %lld offset 0x%llx %s\n", 3662 (u_longlong_t)zb->zb_objset, 3663 (u_longlong_t)zb->zb_object, 3664 (longlong_t)zb->zb_level, 3665 (u_longlong_t)blkid2offset(dnp, bp, zb), 3666 blkbuf); 3667 } 3668 3669 if (BP_IS_HOLE(bp)) 3670 return (0); 3671 3672 type = BP_GET_TYPE(bp); 3673 3674 zdb_count_block(zcb, zilog, bp, 3675 (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type); 3676 3677 is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)); 3678 3679 if (!BP_IS_EMBEDDED(bp) && 3680 (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) { 3681 size_t size = BP_GET_PSIZE(bp); 3682 abd_t *abd = abd_alloc(size, B_FALSE); 3683 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW; 3684 3685 /* If it's an intent log block, failure is expected. */ 3686 if (zb->zb_level == ZB_ZIL_LEVEL) 3687 flags |= ZIO_FLAG_SPECULATIVE; 3688 3689 mutex_enter(&spa->spa_scrub_lock); 3690 while (spa->spa_load_verify_ios > max_inflight) 3691 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); 3692 spa->spa_load_verify_ios++; 3693 mutex_exit(&spa->spa_scrub_lock); 3694 3695 zio_nowait(zio_read(NULL, spa, bp, abd, size, 3696 zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb)); 3697 } 3698 3699 zcb->zcb_readfails = 0; 3700 3701 /* only call gethrtime() every 100 blocks */ 3702 static int iters; 3703 if (++iters > 100) 3704 iters = 0; 3705 else 3706 return (0); 3707 3708 if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) { 3709 uint64_t now = gethrtime(); 3710 char buf[10]; 3711 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize; 3712 int kb_per_sec = 3713 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000)); 3714 int sec_remaining = 3715 (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec; 3716 3717 /* make sure nicenum has enough space */ 3718 CTASSERT(sizeof (buf) >= NN_NUMBUF_SZ); 3719 3720 zfs_nicebytes(bytes, buf, sizeof (buf)); 3721 (void) fprintf(stderr, 3722 "\r%5s completed (%4dMB/s) " 3723 "estimated time remaining: %uhr %02umin %02usec ", 3724 buf, kb_per_sec / 1024, 3725 sec_remaining / 60 / 60, 3726 sec_remaining / 60 % 60, 3727 sec_remaining % 60); 3728 3729 zcb->zcb_lastprint = now; 3730 } 3731 3732 return (0); 3733 } 3734 3735 static void 3736 zdb_leak(void *arg, uint64_t start, uint64_t size) 3737 { 3738 vdev_t *vd = arg; 3739 3740 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 3741 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size); 3742 } 3743 3744 static metaslab_ops_t zdb_metaslab_ops = { 3745 NULL /* alloc */ 3746 }; 3747 3748 typedef int (*zdb_log_sm_cb_t)(spa_t *spa, space_map_entry_t *sme, 3749 uint64_t txg, void *arg); 3750 3751 typedef struct unflushed_iter_cb_arg { 3752 spa_t *uic_spa; 3753 uint64_t uic_txg; 3754 void *uic_arg; 3755 zdb_log_sm_cb_t uic_cb; 3756 } unflushed_iter_cb_arg_t; 3757 3758 static int 3759 iterate_through_spacemap_logs_cb(space_map_entry_t *sme, void *arg) 3760 { 3761 unflushed_iter_cb_arg_t *uic = arg; 3762 3763 return (uic->uic_cb(uic->uic_spa, sme, uic->uic_txg, uic->uic_arg)); 3764 } 3765 3766 static void 3767 iterate_through_spacemap_logs(spa_t *spa, zdb_log_sm_cb_t cb, void *arg) 3768 { 3769 if (!spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) 3770 return; 3771 3772 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 3773 for (spa_log_sm_t *sls = avl_first(&spa->spa_sm_logs_by_txg); 3774 sls; sls = AVL_NEXT(&spa->spa_sm_logs_by_txg, sls)) { 3775 space_map_t *sm = NULL; 3776 VERIFY0(space_map_open(&sm, spa_meta_objset(spa), 3777 sls->sls_sm_obj, 0, UINT64_MAX, SPA_MINBLOCKSHIFT)); 3778 3779 unflushed_iter_cb_arg_t uic = { 3780 .uic_spa = spa, 3781 .uic_txg = sls->sls_txg, 3782 .uic_arg = arg, 3783 .uic_cb = cb 3784 }; 3785 3786 VERIFY0(space_map_iterate(sm, space_map_length(sm), 3787 iterate_through_spacemap_logs_cb, &uic)); 3788 space_map_close(sm); 3789 } 3790 spa_config_exit(spa, SCL_CONFIG, FTAG); 3791 } 3792 3793 /* ARGSUSED */ 3794 static int 3795 load_unflushed_svr_segs_cb(spa_t *spa, space_map_entry_t *sme, 3796 uint64_t txg, void *arg) 3797 { 3798 spa_vdev_removal_t *svr = arg; 3799 3800 uint64_t offset = sme->sme_offset; 3801 uint64_t size = sme->sme_run; 3802 3803 /* skip vdevs we don't care about */ 3804 if (sme->sme_vdev != svr->svr_vdev_id) 3805 return (0); 3806 3807 vdev_t *vd = vdev_lookup_top(spa, sme->sme_vdev); 3808 metaslab_t *ms = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 3809 ASSERT(sme->sme_type == SM_ALLOC || sme->sme_type == SM_FREE); 3810 3811 if (txg < metaslab_unflushed_txg(ms)) 3812 return (0); 3813 3814 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3815 ASSERT(vim != NULL); 3816 if (offset >= vdev_indirect_mapping_max_offset(vim)) 3817 return (0); 3818 3819 if (sme->sme_type == SM_ALLOC) 3820 range_tree_add(svr->svr_allocd_segs, offset, size); 3821 else 3822 range_tree_remove(svr->svr_allocd_segs, offset, size); 3823 3824 return (0); 3825 } 3826 3827 static void 3828 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb) 3829 { 3830 ddt_bookmark_t ddb; 3831 ddt_entry_t dde; 3832 int error; 3833 3834 ASSERT(!dump_opt['L']); 3835 3836 bzero(&ddb, sizeof (ddb)); 3837 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) { 3838 blkptr_t blk; 3839 ddt_phys_t *ddp = dde.dde_phys; 3840 3841 if (ddb.ddb_class == DDT_CLASS_UNIQUE) 3842 return; 3843 3844 ASSERT(ddt_phys_total_refcnt(&dde) > 1); 3845 3846 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 3847 if (ddp->ddp_phys_birth == 0) 3848 continue; 3849 ddt_bp_create(ddb.ddb_checksum, 3850 &dde.dde_key, ddp, &blk); 3851 if (p == DDT_PHYS_DITTO) { 3852 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO); 3853 } else { 3854 zcb->zcb_dedup_asize += 3855 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1); 3856 zcb->zcb_dedup_blocks++; 3857 } 3858 } 3859 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum]; 3860 ddt_enter(ddt); 3861 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL); 3862 ddt_exit(ddt); 3863 } 3864 3865 ASSERT(error == ENOENT); 3866 } 3867 3868 /* ARGSUSED */ 3869 static void 3870 claim_segment_impl_cb(uint64_t inner_offset, vdev_t *vd, uint64_t offset, 3871 uint64_t size, void *arg) 3872 { 3873 /* 3874 * This callback was called through a remap from 3875 * a device being removed. Therefore, the vdev that 3876 * this callback is applied to is a concrete 3877 * vdev. 3878 */ 3879 ASSERT(vdev_is_concrete(vd)); 3880 3881 VERIFY0(metaslab_claim_impl(vd, offset, size, 3882 spa_min_claim_txg(vd->vdev_spa))); 3883 } 3884 3885 static void 3886 claim_segment_cb(void *arg, uint64_t offset, uint64_t size) 3887 { 3888 vdev_t *vd = arg; 3889 3890 vdev_indirect_ops.vdev_op_remap(vd, offset, size, 3891 claim_segment_impl_cb, NULL); 3892 } 3893 3894 /* 3895 * After accounting for all allocated blocks that are directly referenced, 3896 * we might have missed a reference to a block from a partially complete 3897 * (and thus unused) indirect mapping object. We perform a secondary pass 3898 * through the metaslabs we have already mapped and claim the destination 3899 * blocks. 3900 */ 3901 static void 3902 zdb_claim_removing(spa_t *spa, zdb_cb_t *zcb) 3903 { 3904 if (dump_opt['L']) 3905 return; 3906 3907 if (spa->spa_vdev_removal == NULL) 3908 return; 3909 3910 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 3911 3912 spa_vdev_removal_t *svr = spa->spa_vdev_removal; 3913 vdev_t *vd = vdev_lookup_top(spa, svr->svr_vdev_id); 3914 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3915 3916 ASSERT0(range_tree_space(svr->svr_allocd_segs)); 3917 3918 range_tree_t *allocs = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 0); 3919 for (uint64_t msi = 0; msi < vd->vdev_ms_count; msi++) { 3920 metaslab_t *msp = vd->vdev_ms[msi]; 3921 3922 if (msp->ms_start >= vdev_indirect_mapping_max_offset(vim)) 3923 break; 3924 3925 ASSERT0(range_tree_space(allocs)); 3926 if (msp->ms_sm != NULL) 3927 VERIFY0(space_map_load(msp->ms_sm, allocs, SM_ALLOC)); 3928 range_tree_vacate(allocs, range_tree_add, svr->svr_allocd_segs); 3929 } 3930 range_tree_destroy(allocs); 3931 3932 iterate_through_spacemap_logs(spa, load_unflushed_svr_segs_cb, svr); 3933 3934 /* 3935 * Clear everything past what has been synced, 3936 * because we have not allocated mappings for 3937 * it yet. 3938 */ 3939 range_tree_clear(svr->svr_allocd_segs, 3940 vdev_indirect_mapping_max_offset(vim), 3941 vd->vdev_asize - vdev_indirect_mapping_max_offset(vim)); 3942 3943 zcb->zcb_removing_size += range_tree_space(svr->svr_allocd_segs); 3944 range_tree_vacate(svr->svr_allocd_segs, claim_segment_cb, vd); 3945 3946 spa_config_exit(spa, SCL_CONFIG, FTAG); 3947 } 3948 3949 /* ARGSUSED */ 3950 static int 3951 increment_indirect_mapping_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 3952 { 3953 zdb_cb_t *zcb = arg; 3954 spa_t *spa = zcb->zcb_spa; 3955 vdev_t *vd; 3956 const dva_t *dva = &bp->blk_dva[0]; 3957 3958 ASSERT(!dump_opt['L']); 3959 ASSERT3U(BP_GET_NDVAS(bp), ==, 1); 3960 3961 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 3962 vd = vdev_lookup_top(zcb->zcb_spa, DVA_GET_VDEV(dva)); 3963 ASSERT3P(vd, !=, NULL); 3964 spa_config_exit(spa, SCL_VDEV, FTAG); 3965 3966 ASSERT(vd->vdev_indirect_config.vic_mapping_object != 0); 3967 ASSERT3P(zcb->zcb_vd_obsolete_counts[vd->vdev_id], !=, NULL); 3968 3969 vdev_indirect_mapping_increment_obsolete_count( 3970 vd->vdev_indirect_mapping, 3971 DVA_GET_OFFSET(dva), DVA_GET_ASIZE(dva), 3972 zcb->zcb_vd_obsolete_counts[vd->vdev_id]); 3973 3974 return (0); 3975 } 3976 3977 static uint32_t * 3978 zdb_load_obsolete_counts(vdev_t *vd) 3979 { 3980 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3981 spa_t *spa = vd->vdev_spa; 3982 spa_condensing_indirect_phys_t *scip = 3983 &spa->spa_condensing_indirect_phys; 3984 uint32_t *counts; 3985 3986 EQUIV(vdev_obsolete_sm_object(vd) != 0, vd->vdev_obsolete_sm != NULL); 3987 counts = vdev_indirect_mapping_load_obsolete_counts(vim); 3988 if (vd->vdev_obsolete_sm != NULL) { 3989 vdev_indirect_mapping_load_obsolete_spacemap(vim, counts, 3990 vd->vdev_obsolete_sm); 3991 } 3992 if (scip->scip_vdev == vd->vdev_id && 3993 scip->scip_prev_obsolete_sm_object != 0) { 3994 space_map_t *prev_obsolete_sm = NULL; 3995 VERIFY0(space_map_open(&prev_obsolete_sm, spa->spa_meta_objset, 3996 scip->scip_prev_obsolete_sm_object, 0, vd->vdev_asize, 0)); 3997 vdev_indirect_mapping_load_obsolete_spacemap(vim, counts, 3998 prev_obsolete_sm); 3999 space_map_close(prev_obsolete_sm); 4000 } 4001 return (counts); 4002 } 4003 4004 typedef struct checkpoint_sm_exclude_entry_arg { 4005 vdev_t *cseea_vd; 4006 uint64_t cseea_checkpoint_size; 4007 } checkpoint_sm_exclude_entry_arg_t; 4008 4009 static int 4010 checkpoint_sm_exclude_entry_cb(space_map_entry_t *sme, void *arg) 4011 { 4012 checkpoint_sm_exclude_entry_arg_t *cseea = arg; 4013 vdev_t *vd = cseea->cseea_vd; 4014 metaslab_t *ms = vd->vdev_ms[sme->sme_offset >> vd->vdev_ms_shift]; 4015 uint64_t end = sme->sme_offset + sme->sme_run; 4016 4017 ASSERT(sme->sme_type == SM_FREE); 4018 4019 /* 4020 * Since the vdev_checkpoint_sm exists in the vdev level 4021 * and the ms_sm space maps exist in the metaslab level, 4022 * an entry in the checkpoint space map could theoretically 4023 * cross the boundaries of the metaslab that it belongs. 4024 * 4025 * In reality, because of the way that we populate and 4026 * manipulate the checkpoint's space maps currently, 4027 * there shouldn't be any entries that cross metaslabs. 4028 * Hence the assertion below. 4029 * 4030 * That said, there is no fundamental requirement that 4031 * the checkpoint's space map entries should not cross 4032 * metaslab boundaries. So if needed we could add code 4033 * that handles metaslab-crossing segments in the future. 4034 */ 4035 VERIFY3U(sme->sme_offset, >=, ms->ms_start); 4036 VERIFY3U(end, <=, ms->ms_start + ms->ms_size); 4037 4038 /* 4039 * By removing the entry from the allocated segments we 4040 * also verify that the entry is there to begin with. 4041 */ 4042 mutex_enter(&ms->ms_lock); 4043 range_tree_remove(ms->ms_allocatable, sme->sme_offset, sme->sme_run); 4044 mutex_exit(&ms->ms_lock); 4045 4046 cseea->cseea_checkpoint_size += sme->sme_run; 4047 return (0); 4048 } 4049 4050 static void 4051 zdb_leak_init_vdev_exclude_checkpoint(vdev_t *vd, zdb_cb_t *zcb) 4052 { 4053 spa_t *spa = vd->vdev_spa; 4054 space_map_t *checkpoint_sm = NULL; 4055 uint64_t checkpoint_sm_obj; 4056 4057 /* 4058 * If there is no vdev_top_zap, we are in a pool whose 4059 * version predates the pool checkpoint feature. 4060 */ 4061 if (vd->vdev_top_zap == 0) 4062 return; 4063 4064 /* 4065 * If there is no reference of the vdev_checkpoint_sm in 4066 * the vdev_top_zap, then one of the following scenarios 4067 * is true: 4068 * 4069 * 1] There is no checkpoint 4070 * 2] There is a checkpoint, but no checkpointed blocks 4071 * have been freed yet 4072 * 3] The current vdev is indirect 4073 * 4074 * In these cases we return immediately. 4075 */ 4076 if (zap_contains(spa_meta_objset(spa), vd->vdev_top_zap, 4077 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM) != 0) 4078 return; 4079 4080 VERIFY0(zap_lookup(spa_meta_objset(spa), vd->vdev_top_zap, 4081 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, sizeof (uint64_t), 1, 4082 &checkpoint_sm_obj)); 4083 4084 checkpoint_sm_exclude_entry_arg_t cseea; 4085 cseea.cseea_vd = vd; 4086 cseea.cseea_checkpoint_size = 0; 4087 4088 VERIFY0(space_map_open(&checkpoint_sm, spa_meta_objset(spa), 4089 checkpoint_sm_obj, 0, vd->vdev_asize, vd->vdev_ashift)); 4090 4091 VERIFY0(space_map_iterate(checkpoint_sm, 4092 space_map_length(checkpoint_sm), 4093 checkpoint_sm_exclude_entry_cb, &cseea)); 4094 space_map_close(checkpoint_sm); 4095 4096 zcb->zcb_checkpoint_size += cseea.cseea_checkpoint_size; 4097 } 4098 4099 static void 4100 zdb_leak_init_exclude_checkpoint(spa_t *spa, zdb_cb_t *zcb) 4101 { 4102 ASSERT(!dump_opt['L']); 4103 4104 vdev_t *rvd = spa->spa_root_vdev; 4105 for (uint64_t c = 0; c < rvd->vdev_children; c++) { 4106 ASSERT3U(c, ==, rvd->vdev_child[c]->vdev_id); 4107 zdb_leak_init_vdev_exclude_checkpoint(rvd->vdev_child[c], zcb); 4108 } 4109 } 4110 4111 static int 4112 count_unflushed_space_cb(spa_t *spa, space_map_entry_t *sme, 4113 uint64_t txg, void *arg) 4114 { 4115 int64_t *ualloc_space = arg; 4116 uint64_t offset = sme->sme_offset; 4117 uint64_t vdev_id = sme->sme_vdev; 4118 4119 vdev_t *vd = vdev_lookup_top(spa, vdev_id); 4120 if (!vdev_is_concrete(vd)) 4121 return (0); 4122 4123 metaslab_t *ms = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 4124 ASSERT(sme->sme_type == SM_ALLOC || sme->sme_type == SM_FREE); 4125 4126 if (txg < metaslab_unflushed_txg(ms)) 4127 return (0); 4128 4129 if (sme->sme_type == SM_ALLOC) 4130 *ualloc_space += sme->sme_run; 4131 else 4132 *ualloc_space -= sme->sme_run; 4133 4134 return (0); 4135 } 4136 4137 static int64_t 4138 get_unflushed_alloc_space(spa_t *spa) 4139 { 4140 if (dump_opt['L']) 4141 return (0); 4142 4143 int64_t ualloc_space = 0; 4144 iterate_through_spacemap_logs(spa, count_unflushed_space_cb, 4145 &ualloc_space); 4146 return (ualloc_space); 4147 } 4148 4149 static int 4150 load_unflushed_cb(spa_t *spa, space_map_entry_t *sme, uint64_t txg, void *arg) 4151 { 4152 maptype_t *uic_maptype = arg; 4153 uint64_t offset = sme->sme_offset; 4154 uint64_t size = sme->sme_run; 4155 uint64_t vdev_id = sme->sme_vdev; 4156 vdev_t *vd = vdev_lookup_top(spa, vdev_id); 4157 4158 /* skip indirect vdevs */ 4159 if (!vdev_is_concrete(vd)) 4160 return (0); 4161 4162 metaslab_t *ms = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 4163 4164 ASSERT(sme->sme_type == SM_ALLOC || sme->sme_type == SM_FREE); 4165 ASSERT(*uic_maptype == SM_ALLOC || *uic_maptype == SM_FREE); 4166 4167 if (txg < metaslab_unflushed_txg(ms)) 4168 return (0); 4169 4170 if (*uic_maptype == sme->sme_type) 4171 range_tree_add(ms->ms_allocatable, offset, size); 4172 else 4173 range_tree_remove(ms->ms_allocatable, offset, size); 4174 4175 return (0); 4176 } 4177 4178 static void 4179 load_unflushed_to_ms_allocatables(spa_t *spa, maptype_t maptype) 4180 { 4181 iterate_through_spacemap_logs(spa, load_unflushed_cb, &maptype); 4182 } 4183 4184 static void 4185 load_concrete_ms_allocatable_trees(spa_t *spa, maptype_t maptype) 4186 { 4187 vdev_t *rvd = spa->spa_root_vdev; 4188 for (uint64_t i = 0; i < rvd->vdev_children; i++) { 4189 vdev_t *vd = rvd->vdev_child[i]; 4190 4191 ASSERT3U(i, ==, vd->vdev_id); 4192 4193 if (vd->vdev_ops == &vdev_indirect_ops) 4194 continue; 4195 4196 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 4197 metaslab_t *msp = vd->vdev_ms[m]; 4198 4199 (void) fprintf(stderr, 4200 "\rloading concrete vdev %llu, " 4201 "metaslab %llu of %llu ...", 4202 (longlong_t)vd->vdev_id, 4203 (longlong_t)msp->ms_id, 4204 (longlong_t)vd->vdev_ms_count); 4205 4206 mutex_enter(&msp->ms_lock); 4207 range_tree_vacate(msp->ms_allocatable, NULL, NULL); 4208 4209 /* 4210 * We don't want to spend the CPU manipulating the 4211 * size-ordered tree, so clear the range_tree ops. 4212 */ 4213 msp->ms_allocatable->rt_ops = NULL; 4214 4215 if (msp->ms_sm != NULL) { 4216 VERIFY0(space_map_load(msp->ms_sm, 4217 msp->ms_allocatable, maptype)); 4218 } 4219 if (!msp->ms_loaded) 4220 msp->ms_loaded = B_TRUE; 4221 mutex_exit(&msp->ms_lock); 4222 } 4223 } 4224 4225 load_unflushed_to_ms_allocatables(spa, maptype); 4226 } 4227 4228 /* 4229 * vm_idxp is an in-out parameter which (for indirect vdevs) is the 4230 * index in vim_entries that has the first entry in this metaslab. 4231 * On return, it will be set to the first entry after this metaslab. 4232 */ 4233 static void 4234 load_indirect_ms_allocatable_tree(vdev_t *vd, metaslab_t *msp, 4235 uint64_t *vim_idxp) 4236 { 4237 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 4238 4239 mutex_enter(&msp->ms_lock); 4240 range_tree_vacate(msp->ms_allocatable, NULL, NULL); 4241 4242 /* 4243 * We don't want to spend the CPU manipulating the 4244 * size-ordered tree, so clear the range_tree ops. 4245 */ 4246 msp->ms_allocatable->rt_ops = NULL; 4247 4248 for (; *vim_idxp < vdev_indirect_mapping_num_entries(vim); 4249 (*vim_idxp)++) { 4250 vdev_indirect_mapping_entry_phys_t *vimep = 4251 &vim->vim_entries[*vim_idxp]; 4252 uint64_t ent_offset = DVA_MAPPING_GET_SRC_OFFSET(vimep); 4253 uint64_t ent_len = DVA_GET_ASIZE(&vimep->vimep_dst); 4254 ASSERT3U(ent_offset, >=, msp->ms_start); 4255 if (ent_offset >= msp->ms_start + msp->ms_size) 4256 break; 4257 4258 /* 4259 * Mappings do not cross metaslab boundaries, 4260 * because we create them by walking the metaslabs. 4261 */ 4262 ASSERT3U(ent_offset + ent_len, <=, 4263 msp->ms_start + msp->ms_size); 4264 range_tree_add(msp->ms_allocatable, ent_offset, ent_len); 4265 } 4266 4267 if (!msp->ms_loaded) 4268 msp->ms_loaded = B_TRUE; 4269 mutex_exit(&msp->ms_lock); 4270 } 4271 4272 static void 4273 zdb_leak_init_prepare_indirect_vdevs(spa_t *spa, zdb_cb_t *zcb) 4274 { 4275 ASSERT(!dump_opt['L']); 4276 4277 vdev_t *rvd = spa->spa_root_vdev; 4278 for (uint64_t c = 0; c < rvd->vdev_children; c++) { 4279 vdev_t *vd = rvd->vdev_child[c]; 4280 4281 ASSERT3U(c, ==, vd->vdev_id); 4282 4283 if (vd->vdev_ops != &vdev_indirect_ops) 4284 continue; 4285 4286 /* 4287 * Note: we don't check for mapping leaks on 4288 * removing vdevs because their ms_allocatable's 4289 * are used to look for leaks in allocated space. 4290 */ 4291 zcb->zcb_vd_obsolete_counts[c] = zdb_load_obsolete_counts(vd); 4292 4293 /* 4294 * Normally, indirect vdevs don't have any 4295 * metaslabs. We want to set them up for 4296 * zio_claim(). 4297 */ 4298 VERIFY0(vdev_metaslab_init(vd, 0)); 4299 4300 #if defined(DEBUG) 4301 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 4302 #endif 4303 uint64_t vim_idx = 0; 4304 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 4305 4306 (void) fprintf(stderr, 4307 "\rloading indirect vdev %llu, " 4308 "metaslab %llu of %llu ...", 4309 (longlong_t)vd->vdev_id, 4310 (longlong_t)vd->vdev_ms[m]->ms_id, 4311 (longlong_t)vd->vdev_ms_count); 4312 4313 load_indirect_ms_allocatable_tree(vd, vd->vdev_ms[m], 4314 &vim_idx); 4315 } 4316 ASSERT3U(vim_idx, ==, vdev_indirect_mapping_num_entries(vim)); 4317 } 4318 } 4319 4320 static void 4321 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb) 4322 { 4323 zcb->zcb_spa = spa; 4324 4325 if (dump_opt['L']) 4326 return; 4327 4328 dsl_pool_t *dp = spa->spa_dsl_pool; 4329 vdev_t *rvd = spa->spa_root_vdev; 4330 4331 /* 4332 * We are going to be changing the meaning of the metaslab's 4333 * ms_allocatable. Ensure that the allocator doesn't try to 4334 * use the tree. 4335 */ 4336 spa->spa_normal_class->mc_ops = &zdb_metaslab_ops; 4337 spa->spa_log_class->mc_ops = &zdb_metaslab_ops; 4338 4339 zcb->zcb_vd_obsolete_counts = 4340 umem_zalloc(rvd->vdev_children * sizeof (uint32_t *), 4341 UMEM_NOFAIL); 4342 4343 /* 4344 * For leak detection, we overload the ms_allocatable trees 4345 * to contain allocated segments instead of free segments. 4346 * As a result, we can't use the normal metaslab_load/unload 4347 * interfaces. 4348 */ 4349 zdb_leak_init_prepare_indirect_vdevs(spa, zcb); 4350 load_concrete_ms_allocatable_trees(spa, SM_ALLOC); 4351 4352 /* 4353 * On load_concrete_ms_allocatable_trees() we loaded all the 4354 * allocated entries from the ms_sm to the ms_allocatable for 4355 * each metaslab. If the pool has a checkpoint or is in the 4356 * middle of discarding a checkpoint, some of these blocks 4357 * may have been freed but their ms_sm may not have been 4358 * updated because they are referenced by the checkpoint. In 4359 * order to avoid false-positives during leak-detection, we 4360 * go through the vdev's checkpoint space map and exclude all 4361 * its entries from their relevant ms_allocatable. 4362 * 4363 * We also aggregate the space held by the checkpoint and add 4364 * it to zcb_checkpoint_size. 4365 * 4366 * Note that at this point we are also verifying that all the 4367 * entries on the checkpoint_sm are marked as allocated in 4368 * the ms_sm of their relevant metaslab. 4369 * [see comment in checkpoint_sm_exclude_entry_cb()] 4370 */ 4371 zdb_leak_init_exclude_checkpoint(spa, zcb); 4372 ASSERT3U(zcb->zcb_checkpoint_size, ==, spa_get_checkpoint_space(spa)); 4373 4374 /* for cleaner progress output */ 4375 (void) fprintf(stderr, "\n"); 4376 4377 if (bpobj_is_open(&dp->dp_obsolete_bpobj)) { 4378 ASSERT(spa_feature_is_enabled(spa, 4379 SPA_FEATURE_DEVICE_REMOVAL)); 4380 (void) bpobj_iterate_nofree(&dp->dp_obsolete_bpobj, 4381 increment_indirect_mapping_cb, zcb, NULL); 4382 } 4383 4384 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 4385 zdb_ddt_leak_init(spa, zcb); 4386 spa_config_exit(spa, SCL_CONFIG, FTAG); 4387 } 4388 4389 static boolean_t 4390 zdb_check_for_obsolete_leaks(vdev_t *vd, zdb_cb_t *zcb) 4391 { 4392 boolean_t leaks = B_FALSE; 4393 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 4394 uint64_t total_leaked = 0; 4395 4396 ASSERT(vim != NULL); 4397 4398 for (uint64_t i = 0; i < vdev_indirect_mapping_num_entries(vim); i++) { 4399 vdev_indirect_mapping_entry_phys_t *vimep = 4400 &vim->vim_entries[i]; 4401 uint64_t obsolete_bytes = 0; 4402 uint64_t offset = DVA_MAPPING_GET_SRC_OFFSET(vimep); 4403 metaslab_t *msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 4404 4405 /* 4406 * This is not very efficient but it's easy to 4407 * verify correctness. 4408 */ 4409 for (uint64_t inner_offset = 0; 4410 inner_offset < DVA_GET_ASIZE(&vimep->vimep_dst); 4411 inner_offset += 1 << vd->vdev_ashift) { 4412 if (range_tree_contains(msp->ms_allocatable, 4413 offset + inner_offset, 1 << vd->vdev_ashift)) { 4414 obsolete_bytes += 1 << vd->vdev_ashift; 4415 } 4416 } 4417 4418 int64_t bytes_leaked = obsolete_bytes - 4419 zcb->zcb_vd_obsolete_counts[vd->vdev_id][i]; 4420 ASSERT3U(DVA_GET_ASIZE(&vimep->vimep_dst), >=, 4421 zcb->zcb_vd_obsolete_counts[vd->vdev_id][i]); 4422 if (bytes_leaked != 0 && 4423 (vdev_obsolete_counts_are_precise(vd) || 4424 dump_opt['d'] >= 5)) { 4425 (void) printf("obsolete indirect mapping count " 4426 "mismatch on %llu:%llx:%llx : %llx bytes leaked\n", 4427 (u_longlong_t)vd->vdev_id, 4428 (u_longlong_t)DVA_MAPPING_GET_SRC_OFFSET(vimep), 4429 (u_longlong_t)DVA_GET_ASIZE(&vimep->vimep_dst), 4430 (u_longlong_t)bytes_leaked); 4431 } 4432 total_leaked += ABS(bytes_leaked); 4433 } 4434 4435 if (!vdev_obsolete_counts_are_precise(vd) && total_leaked > 0) { 4436 int pct_leaked = total_leaked * 100 / 4437 vdev_indirect_mapping_bytes_mapped(vim); 4438 (void) printf("cannot verify obsolete indirect mapping " 4439 "counts of vdev %llu because precise feature was not " 4440 "enabled when it was removed: %d%% (%llx bytes) of mapping" 4441 "unreferenced\n", 4442 (u_longlong_t)vd->vdev_id, pct_leaked, 4443 (u_longlong_t)total_leaked); 4444 } else if (total_leaked > 0) { 4445 (void) printf("obsolete indirect mapping count mismatch " 4446 "for vdev %llu -- %llx total bytes mismatched\n", 4447 (u_longlong_t)vd->vdev_id, 4448 (u_longlong_t)total_leaked); 4449 leaks |= B_TRUE; 4450 } 4451 4452 vdev_indirect_mapping_free_obsolete_counts(vim, 4453 zcb->zcb_vd_obsolete_counts[vd->vdev_id]); 4454 zcb->zcb_vd_obsolete_counts[vd->vdev_id] = NULL; 4455 4456 return (leaks); 4457 } 4458 4459 static boolean_t 4460 zdb_leak_fini(spa_t *spa, zdb_cb_t *zcb) 4461 { 4462 if (dump_opt['L']) 4463 return (B_FALSE); 4464 4465 boolean_t leaks = B_FALSE; 4466 4467 vdev_t *rvd = spa->spa_root_vdev; 4468 for (unsigned c = 0; c < rvd->vdev_children; c++) { 4469 vdev_t *vd = rvd->vdev_child[c]; 4470 #if DEBUG 4471 metaslab_group_t *mg = vd->vdev_mg; 4472 #endif 4473 4474 if (zcb->zcb_vd_obsolete_counts[c] != NULL) { 4475 leaks |= zdb_check_for_obsolete_leaks(vd, zcb); 4476 } 4477 4478 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 4479 metaslab_t *msp = vd->vdev_ms[m]; 4480 ASSERT3P(mg, ==, msp->ms_group); 4481 4482 /* 4483 * ms_allocatable has been overloaded 4484 * to contain allocated segments. Now that 4485 * we finished traversing all blocks, any 4486 * block that remains in the ms_allocatable 4487 * represents an allocated block that we 4488 * did not claim during the traversal. 4489 * Claimed blocks would have been removed 4490 * from the ms_allocatable. For indirect 4491 * vdevs, space remaining in the tree 4492 * represents parts of the mapping that are 4493 * not referenced, which is not a bug. 4494 */ 4495 if (vd->vdev_ops == &vdev_indirect_ops) { 4496 range_tree_vacate(msp->ms_allocatable, 4497 NULL, NULL); 4498 } else { 4499 range_tree_vacate(msp->ms_allocatable, 4500 zdb_leak, vd); 4501 } 4502 if (msp->ms_loaded) { 4503 msp->ms_loaded = B_FALSE; 4504 } 4505 } 4506 4507 } 4508 4509 umem_free(zcb->zcb_vd_obsolete_counts, 4510 rvd->vdev_children * sizeof (uint32_t *)); 4511 zcb->zcb_vd_obsolete_counts = NULL; 4512 4513 return (leaks); 4514 } 4515 4516 /* ARGSUSED */ 4517 static int 4518 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 4519 { 4520 zdb_cb_t *zcb = arg; 4521 4522 if (dump_opt['b'] >= 5) { 4523 char blkbuf[BP_SPRINTF_LEN]; 4524 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 4525 (void) printf("[%s] %s\n", 4526 "deferred free", blkbuf); 4527 } 4528 zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED); 4529 return (0); 4530 } 4531 4532 static int 4533 dump_block_stats(spa_t *spa) 4534 { 4535 zdb_cb_t zcb; 4536 zdb_blkstats_t *zb, *tzb; 4537 uint64_t norm_alloc, norm_space, total_alloc, total_found; 4538 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | 4539 TRAVERSE_NO_DECRYPT | TRAVERSE_HARD; 4540 boolean_t leaks = B_FALSE; 4541 int err; 4542 4543 bzero(&zcb, sizeof (zcb)); 4544 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n", 4545 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "", 4546 (dump_opt['c'] == 1) ? "metadata " : "", 4547 dump_opt['c'] ? "checksums " : "", 4548 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "", 4549 !dump_opt['L'] ? "nothing leaked " : ""); 4550 4551 /* 4552 * When leak detection is enabled we load all space maps as SM_ALLOC 4553 * maps, then traverse the pool claiming each block we discover. If 4554 * the pool is perfectly consistent, the segment trees will be empty 4555 * when we're done. Anything left over is a leak; any block we can't 4556 * claim (because it's not part of any space map) is a double 4557 * allocation, reference to a freed block, or an unclaimed log block. 4558 * 4559 * When leak detection is disabled (-L option) we still traverse the 4560 * pool claiming each block we discover, but we skip opening any space 4561 * maps. 4562 */ 4563 bzero(&zcb, sizeof (zdb_cb_t)); 4564 zdb_leak_init(spa, &zcb); 4565 4566 /* 4567 * If there's a deferred-free bplist, process that first. 4568 */ 4569 (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj, 4570 count_block_cb, &zcb, NULL); 4571 4572 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 4573 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj, 4574 count_block_cb, &zcb, NULL); 4575 } 4576 4577 zdb_claim_removing(spa, &zcb); 4578 4579 if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) { 4580 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset, 4581 spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb, 4582 &zcb, NULL)); 4583 } 4584 4585 if (dump_opt['c'] > 1) 4586 flags |= TRAVERSE_PREFETCH_DATA; 4587 4588 zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa)); 4589 zcb.zcb_totalasize += metaslab_class_get_alloc(spa_special_class(spa)); 4590 zcb.zcb_totalasize += metaslab_class_get_alloc(spa_dedup_class(spa)); 4591 zcb.zcb_start = zcb.zcb_lastprint = gethrtime(); 4592 err = traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb); 4593 4594 /* 4595 * If we've traversed the data blocks then we need to wait for those 4596 * I/Os to complete. We leverage "The Godfather" zio to wait on 4597 * all async I/Os to complete. 4598 */ 4599 if (dump_opt['c']) { 4600 for (int i = 0; i < max_ncpus; i++) { 4601 (void) zio_wait(spa->spa_async_zio_root[i]); 4602 spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, 4603 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | 4604 ZIO_FLAG_GODFATHER); 4605 } 4606 } 4607 4608 /* 4609 * Done after zio_wait() since zcb_haderrors is modified in 4610 * zdb_blkptr_done() 4611 */ 4612 zcb.zcb_haderrors |= err; 4613 4614 if (zcb.zcb_haderrors) { 4615 (void) printf("\nError counts:\n\n"); 4616 (void) printf("\t%5s %s\n", "errno", "count"); 4617 for (int e = 0; e < 256; e++) { 4618 if (zcb.zcb_errors[e] != 0) { 4619 (void) printf("\t%5d %llu\n", 4620 e, (u_longlong_t)zcb.zcb_errors[e]); 4621 } 4622 } 4623 } 4624 4625 /* 4626 * Report any leaked segments. 4627 */ 4628 leaks |= zdb_leak_fini(spa, &zcb); 4629 4630 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL]; 4631 4632 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 4633 norm_space = metaslab_class_get_space(spa_normal_class(spa)); 4634 4635 total_alloc = norm_alloc + 4636 metaslab_class_get_alloc(spa_log_class(spa)) + 4637 metaslab_class_get_alloc(spa_special_class(spa)) + 4638 metaslab_class_get_alloc(spa_dedup_class(spa)) + 4639 get_unflushed_alloc_space(spa); 4640 total_found = tzb->zb_asize - zcb.zcb_dedup_asize + 4641 zcb.zcb_removing_size + zcb.zcb_checkpoint_size; 4642 4643 if (total_found == total_alloc && !dump_opt['L']) { 4644 (void) printf("\n\tNo leaks (block sum matches space" 4645 " maps exactly)\n"); 4646 } else if (!dump_opt['L']) { 4647 (void) printf("block traversal size %llu != alloc %llu " 4648 "(%s %lld)\n", 4649 (u_longlong_t)total_found, 4650 (u_longlong_t)total_alloc, 4651 (dump_opt['L']) ? "unreachable" : "leaked", 4652 (longlong_t)(total_alloc - total_found)); 4653 leaks = B_TRUE; 4654 } 4655 4656 if (tzb->zb_count == 0) 4657 return (2); 4658 4659 (void) printf("\n"); 4660 (void) printf("\t%-16s %14llu\n", "bp count:", 4661 (u_longlong_t)tzb->zb_count); 4662 (void) printf("\t%-16s %14llu\n", "ganged count:", 4663 (longlong_t)tzb->zb_gangs); 4664 (void) printf("\t%-16s %14llu avg: %6llu\n", "bp logical:", 4665 (u_longlong_t)tzb->zb_lsize, 4666 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 4667 (void) printf("\t%-16s %14llu avg: %6llu compression: %6.2f\n", 4668 "bp physical:", (u_longlong_t)tzb->zb_psize, 4669 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 4670 (double)tzb->zb_lsize / tzb->zb_psize); 4671 (void) printf("\t%-16s %14llu avg: %6llu compression: %6.2f\n", 4672 "bp allocated:", (u_longlong_t)tzb->zb_asize, 4673 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 4674 (double)tzb->zb_lsize / tzb->zb_asize); 4675 (void) printf("\t%-16s %14llu ref>1: %6llu deduplication: %6.2f\n", 4676 "bp deduped:", (u_longlong_t)zcb.zcb_dedup_asize, 4677 (u_longlong_t)zcb.zcb_dedup_blocks, 4678 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0); 4679 (void) printf("\t%-16s %14llu used: %5.2f%%\n", "Normal class:", 4680 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space); 4681 4682 if (spa_special_class(spa)->mc_rotor != NULL) { 4683 uint64_t alloc = metaslab_class_get_alloc( 4684 spa_special_class(spa)); 4685 uint64_t space = metaslab_class_get_space( 4686 spa_special_class(spa)); 4687 4688 (void) printf("\t%-16s %14llu used: %5.2f%%\n", 4689 "Special class", (u_longlong_t)alloc, 4690 100.0 * alloc / space); 4691 } 4692 4693 if (spa_dedup_class(spa)->mc_rotor != NULL) { 4694 uint64_t alloc = metaslab_class_get_alloc( 4695 spa_dedup_class(spa)); 4696 uint64_t space = metaslab_class_get_space( 4697 spa_dedup_class(spa)); 4698 4699 (void) printf("\t%-16s %14llu used: %5.2f%%\n", 4700 "Dedup class", (u_longlong_t)alloc, 4701 100.0 * alloc / space); 4702 } 4703 4704 for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) { 4705 if (zcb.zcb_embedded_blocks[i] == 0) 4706 continue; 4707 (void) printf("\n"); 4708 (void) printf("\tadditional, non-pointer bps of type %u: " 4709 "%10llu\n", 4710 i, (u_longlong_t)zcb.zcb_embedded_blocks[i]); 4711 4712 if (dump_opt['b'] >= 3) { 4713 (void) printf("\t number of (compressed) bytes: " 4714 "number of bps\n"); 4715 dump_histogram(zcb.zcb_embedded_histogram[i], 4716 sizeof (zcb.zcb_embedded_histogram[i]) / 4717 sizeof (zcb.zcb_embedded_histogram[i][0]), 0); 4718 } 4719 } 4720 4721 if (tzb->zb_ditto_samevdev != 0) { 4722 (void) printf("\tDittoed blocks on same vdev: %llu\n", 4723 (longlong_t)tzb->zb_ditto_samevdev); 4724 } 4725 if (tzb->zb_ditto_same_ms != 0) { 4726 (void) printf("\tDittoed blocks in same metaslab: %llu\n", 4727 (longlong_t)tzb->zb_ditto_same_ms); 4728 } 4729 4730 for (uint64_t v = 0; v < spa->spa_root_vdev->vdev_children; v++) { 4731 vdev_t *vd = spa->spa_root_vdev->vdev_child[v]; 4732 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 4733 4734 if (vim == NULL) { 4735 continue; 4736 } 4737 4738 char mem[32]; 4739 zdb_nicenum(vdev_indirect_mapping_num_entries(vim), 4740 mem, vdev_indirect_mapping_size(vim)); 4741 4742 (void) printf("\tindirect vdev id %llu has %llu segments " 4743 "(%s in memory)\n", 4744 (longlong_t)vd->vdev_id, 4745 (longlong_t)vdev_indirect_mapping_num_entries(vim), mem); 4746 } 4747 4748 if (dump_opt['b'] >= 2) { 4749 int l, t, level; 4750 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 4751 "\t avg\t comp\t%%Total\tType\n"); 4752 4753 for (t = 0; t <= ZDB_OT_TOTAL; t++) { 4754 char csize[32], lsize[32], psize[32], asize[32]; 4755 char avg[32], gang[32]; 4756 const char *typename; 4757 4758 /* make sure nicenum has enough space */ 4759 CTASSERT(sizeof (csize) >= NN_NUMBUF_SZ); 4760 CTASSERT(sizeof (lsize) >= NN_NUMBUF_SZ); 4761 CTASSERT(sizeof (psize) >= NN_NUMBUF_SZ); 4762 CTASSERT(sizeof (asize) >= NN_NUMBUF_SZ); 4763 CTASSERT(sizeof (avg) >= NN_NUMBUF_SZ); 4764 CTASSERT(sizeof (gang) >= NN_NUMBUF_SZ); 4765 4766 if (t < DMU_OT_NUMTYPES) 4767 typename = dmu_ot[t].ot_name; 4768 else 4769 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES]; 4770 4771 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 4772 (void) printf("%6s\t%5s\t%5s\t%5s" 4773 "\t%5s\t%5s\t%6s\t%s\n", 4774 "-", 4775 "-", 4776 "-", 4777 "-", 4778 "-", 4779 "-", 4780 "-", 4781 typename); 4782 continue; 4783 } 4784 4785 for (l = ZB_TOTAL - 1; l >= -1; l--) { 4786 level = (l == -1 ? ZB_TOTAL : l); 4787 zb = &zcb.zcb_type[level][t]; 4788 4789 if (zb->zb_asize == 0) 4790 continue; 4791 4792 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 4793 continue; 4794 4795 if (level == 0 && zb->zb_asize == 4796 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 4797 continue; 4798 4799 zdb_nicenum(zb->zb_count, csize, 4800 sizeof (csize)); 4801 zdb_nicenum(zb->zb_lsize, lsize, 4802 sizeof (lsize)); 4803 zdb_nicenum(zb->zb_psize, psize, 4804 sizeof (psize)); 4805 zdb_nicenum(zb->zb_asize, asize, 4806 sizeof (asize)); 4807 zdb_nicenum(zb->zb_asize / zb->zb_count, avg, 4808 sizeof (avg)); 4809 zdb_nicenum(zb->zb_gangs, gang, sizeof (gang)); 4810 4811 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 4812 "\t%5.2f\t%6.2f\t", 4813 csize, lsize, psize, asize, avg, 4814 (double)zb->zb_lsize / zb->zb_psize, 4815 100.0 * zb->zb_asize / tzb->zb_asize); 4816 4817 if (level == ZB_TOTAL) 4818 (void) printf("%s\n", typename); 4819 else 4820 (void) printf(" L%d %s\n", 4821 level, typename); 4822 4823 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) { 4824 (void) printf("\t number of ganged " 4825 "blocks: %s\n", gang); 4826 } 4827 4828 if (dump_opt['b'] >= 4) { 4829 (void) printf("psize " 4830 "(in 512-byte sectors): " 4831 "number of blocks\n"); 4832 dump_histogram(zb->zb_psize_histogram, 4833 PSIZE_HISTO_SIZE, 0); 4834 } 4835 } 4836 } 4837 } 4838 4839 (void) printf("\n"); 4840 4841 if (leaks) 4842 return (2); 4843 4844 if (zcb.zcb_haderrors) 4845 return (3); 4846 4847 return (0); 4848 } 4849 4850 typedef struct zdb_ddt_entry { 4851 ddt_key_t zdde_key; 4852 uint64_t zdde_ref_blocks; 4853 uint64_t zdde_ref_lsize; 4854 uint64_t zdde_ref_psize; 4855 uint64_t zdde_ref_dsize; 4856 avl_node_t zdde_node; 4857 } zdb_ddt_entry_t; 4858 4859 /* ARGSUSED */ 4860 static int 4861 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 4862 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 4863 { 4864 avl_tree_t *t = arg; 4865 avl_index_t where; 4866 zdb_ddt_entry_t *zdde, zdde_search; 4867 4868 if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp)) 4869 return (0); 4870 4871 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) { 4872 (void) printf("traversing objset %llu, %llu objects, " 4873 "%lu blocks so far\n", 4874 (u_longlong_t)zb->zb_objset, 4875 (u_longlong_t)BP_GET_FILL(bp), 4876 avl_numnodes(t)); 4877 } 4878 4879 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF || 4880 BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) 4881 return (0); 4882 4883 ddt_key_fill(&zdde_search.zdde_key, bp); 4884 4885 zdde = avl_find(t, &zdde_search, &where); 4886 4887 if (zdde == NULL) { 4888 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL); 4889 zdde->zdde_key = zdde_search.zdde_key; 4890 avl_insert(t, zdde, where); 4891 } 4892 4893 zdde->zdde_ref_blocks += 1; 4894 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp); 4895 zdde->zdde_ref_psize += BP_GET_PSIZE(bp); 4896 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp); 4897 4898 return (0); 4899 } 4900 4901 static void 4902 dump_simulated_ddt(spa_t *spa) 4903 { 4904 avl_tree_t t; 4905 void *cookie = NULL; 4906 zdb_ddt_entry_t *zdde; 4907 ddt_histogram_t ddh_total; 4908 ddt_stat_t dds_total; 4909 4910 bzero(&ddh_total, sizeof (ddh_total)); 4911 bzero(&dds_total, sizeof (dds_total)); 4912 avl_create(&t, ddt_entry_compare, 4913 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node)); 4914 4915 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 4916 4917 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | 4918 TRAVERSE_NO_DECRYPT, zdb_ddt_add_cb, &t); 4919 4920 spa_config_exit(spa, SCL_CONFIG, FTAG); 4921 4922 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) { 4923 ddt_stat_t dds; 4924 uint64_t refcnt = zdde->zdde_ref_blocks; 4925 ASSERT(refcnt != 0); 4926 4927 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt; 4928 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt; 4929 dds.dds_psize = zdde->zdde_ref_psize / refcnt; 4930 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt; 4931 4932 dds.dds_ref_blocks = zdde->zdde_ref_blocks; 4933 dds.dds_ref_lsize = zdde->zdde_ref_lsize; 4934 dds.dds_ref_psize = zdde->zdde_ref_psize; 4935 dds.dds_ref_dsize = zdde->zdde_ref_dsize; 4936 4937 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1], 4938 &dds, 0); 4939 4940 umem_free(zdde, sizeof (*zdde)); 4941 } 4942 4943 avl_destroy(&t); 4944 4945 ddt_histogram_stat(&dds_total, &ddh_total); 4946 4947 (void) printf("Simulated DDT histogram:\n"); 4948 4949 zpool_dump_ddt(&dds_total, &ddh_total); 4950 4951 dump_dedup_ratio(&dds_total); 4952 } 4953 4954 static int 4955 verify_device_removal_feature_counts(spa_t *spa) 4956 { 4957 uint64_t dr_feature_refcount = 0; 4958 uint64_t oc_feature_refcount = 0; 4959 uint64_t indirect_vdev_count = 0; 4960 uint64_t precise_vdev_count = 0; 4961 uint64_t obsolete_counts_object_count = 0; 4962 uint64_t obsolete_sm_count = 0; 4963 uint64_t obsolete_counts_count = 0; 4964 uint64_t scip_count = 0; 4965 uint64_t obsolete_bpobj_count = 0; 4966 int ret = 0; 4967 4968 spa_condensing_indirect_phys_t *scip = 4969 &spa->spa_condensing_indirect_phys; 4970 if (scip->scip_next_mapping_object != 0) { 4971 vdev_t *vd = spa->spa_root_vdev->vdev_child[scip->scip_vdev]; 4972 ASSERT(scip->scip_prev_obsolete_sm_object != 0); 4973 ASSERT3P(vd->vdev_ops, ==, &vdev_indirect_ops); 4974 4975 (void) printf("Condensing indirect vdev %llu: new mapping " 4976 "object %llu, prev obsolete sm %llu\n", 4977 (u_longlong_t)scip->scip_vdev, 4978 (u_longlong_t)scip->scip_next_mapping_object, 4979 (u_longlong_t)scip->scip_prev_obsolete_sm_object); 4980 if (scip->scip_prev_obsolete_sm_object != 0) { 4981 space_map_t *prev_obsolete_sm = NULL; 4982 VERIFY0(space_map_open(&prev_obsolete_sm, 4983 spa->spa_meta_objset, 4984 scip->scip_prev_obsolete_sm_object, 4985 0, vd->vdev_asize, 0)); 4986 dump_spacemap(spa->spa_meta_objset, prev_obsolete_sm); 4987 (void) printf("\n"); 4988 space_map_close(prev_obsolete_sm); 4989 } 4990 4991 scip_count += 2; 4992 } 4993 4994 for (uint64_t i = 0; i < spa->spa_root_vdev->vdev_children; i++) { 4995 vdev_t *vd = spa->spa_root_vdev->vdev_child[i]; 4996 vdev_indirect_config_t *vic = &vd->vdev_indirect_config; 4997 4998 if (vic->vic_mapping_object != 0) { 4999 ASSERT(vd->vdev_ops == &vdev_indirect_ops || 5000 vd->vdev_removing); 5001 indirect_vdev_count++; 5002 5003 if (vd->vdev_indirect_mapping->vim_havecounts) { 5004 obsolete_counts_count++; 5005 } 5006 } 5007 if (vdev_obsolete_counts_are_precise(vd)) { 5008 ASSERT(vic->vic_mapping_object != 0); 5009 precise_vdev_count++; 5010 } 5011 if (vdev_obsolete_sm_object(vd) != 0) { 5012 ASSERT(vic->vic_mapping_object != 0); 5013 obsolete_sm_count++; 5014 } 5015 } 5016 5017 (void) feature_get_refcount(spa, 5018 &spa_feature_table[SPA_FEATURE_DEVICE_REMOVAL], 5019 &dr_feature_refcount); 5020 (void) feature_get_refcount(spa, 5021 &spa_feature_table[SPA_FEATURE_OBSOLETE_COUNTS], 5022 &oc_feature_refcount); 5023 5024 if (dr_feature_refcount != indirect_vdev_count) { 5025 ret = 1; 5026 (void) printf("Number of indirect vdevs (%llu) " \ 5027 "does not match feature count (%llu)\n", 5028 (u_longlong_t)indirect_vdev_count, 5029 (u_longlong_t)dr_feature_refcount); 5030 } else { 5031 (void) printf("Verified device_removal feature refcount " \ 5032 "of %llu is correct\n", 5033 (u_longlong_t)dr_feature_refcount); 5034 } 5035 5036 if (zap_contains(spa_meta_objset(spa), DMU_POOL_DIRECTORY_OBJECT, 5037 DMU_POOL_OBSOLETE_BPOBJ) == 0) { 5038 obsolete_bpobj_count++; 5039 } 5040 5041 5042 obsolete_counts_object_count = precise_vdev_count; 5043 obsolete_counts_object_count += obsolete_sm_count; 5044 obsolete_counts_object_count += obsolete_counts_count; 5045 obsolete_counts_object_count += scip_count; 5046 obsolete_counts_object_count += obsolete_bpobj_count; 5047 obsolete_counts_object_count += remap_deadlist_count; 5048 5049 if (oc_feature_refcount != obsolete_counts_object_count) { 5050 ret = 1; 5051 (void) printf("Number of obsolete counts objects (%llu) " \ 5052 "does not match feature count (%llu)\n", 5053 (u_longlong_t)obsolete_counts_object_count, 5054 (u_longlong_t)oc_feature_refcount); 5055 (void) printf("pv:%llu os:%llu oc:%llu sc:%llu " 5056 "ob:%llu rd:%llu\n", 5057 (u_longlong_t)precise_vdev_count, 5058 (u_longlong_t)obsolete_sm_count, 5059 (u_longlong_t)obsolete_counts_count, 5060 (u_longlong_t)scip_count, 5061 (u_longlong_t)obsolete_bpobj_count, 5062 (u_longlong_t)remap_deadlist_count); 5063 } else { 5064 (void) printf("Verified indirect_refcount feature refcount " \ 5065 "of %llu is correct\n", 5066 (u_longlong_t)oc_feature_refcount); 5067 } 5068 return (ret); 5069 } 5070 5071 static void 5072 zdb_set_skip_mmp(char *target) 5073 { 5074 spa_t *spa; 5075 5076 /* 5077 * Disable the activity check to allow examination of 5078 * active pools. 5079 */ 5080 mutex_enter(&spa_namespace_lock); 5081 if ((spa = spa_lookup(target)) != NULL) { 5082 spa->spa_import_flags |= ZFS_IMPORT_SKIP_MMP; 5083 } 5084 mutex_exit(&spa_namespace_lock); 5085 } 5086 5087 #define BOGUS_SUFFIX "_CHECKPOINTED_UNIVERSE" 5088 /* 5089 * Import the checkpointed state of the pool specified by the target 5090 * parameter as readonly. The function also accepts a pool config 5091 * as an optional parameter, else it attempts to infer the config by 5092 * the name of the target pool. 5093 * 5094 * Note that the checkpointed state's pool name will be the name of 5095 * the original pool with the above suffix appened to it. In addition, 5096 * if the target is not a pool name (e.g. a path to a dataset) then 5097 * the new_path parameter is populated with the updated path to 5098 * reflect the fact that we are looking into the checkpointed state. 5099 * 5100 * The function returns a newly-allocated copy of the name of the 5101 * pool containing the checkpointed state. When this copy is no 5102 * longer needed it should be freed with free(3C). Same thing 5103 * applies to the new_path parameter if allocated. 5104 */ 5105 static char * 5106 import_checkpointed_state(char *target, nvlist_t *cfg, char **new_path) 5107 { 5108 int error = 0; 5109 char *poolname, *bogus_name; 5110 5111 /* If the target is not a pool, the extract the pool name */ 5112 char *path_start = strchr(target, '/'); 5113 if (path_start != NULL) { 5114 size_t poolname_len = path_start - target; 5115 poolname = strndup(target, poolname_len); 5116 } else { 5117 poolname = target; 5118 } 5119 5120 if (cfg == NULL) { 5121 zdb_set_skip_mmp(poolname); 5122 error = spa_get_stats(poolname, &cfg, NULL, 0); 5123 if (error != 0) { 5124 fatal("Tried to read config of pool \"%s\" but " 5125 "spa_get_stats() failed with error %d\n", 5126 poolname, error); 5127 } 5128 } 5129 5130 (void) asprintf(&bogus_name, "%s%s", poolname, BOGUS_SUFFIX); 5131 fnvlist_add_string(cfg, ZPOOL_CONFIG_POOL_NAME, bogus_name); 5132 5133 error = spa_import(bogus_name, cfg, NULL, 5134 ZFS_IMPORT_MISSING_LOG | ZFS_IMPORT_CHECKPOINT | 5135 ZFS_IMPORT_SKIP_MMP); 5136 if (error != 0) { 5137 fatal("Tried to import pool \"%s\" but spa_import() failed " 5138 "with error %d\n", bogus_name, error); 5139 } 5140 5141 if (new_path != NULL && path_start != NULL) 5142 (void) asprintf(new_path, "%s%s", bogus_name, path_start); 5143 5144 if (target != poolname) 5145 free(poolname); 5146 5147 return (bogus_name); 5148 } 5149 5150 typedef struct verify_checkpoint_sm_entry_cb_arg { 5151 vdev_t *vcsec_vd; 5152 5153 /* the following fields are only used for printing progress */ 5154 uint64_t vcsec_entryid; 5155 uint64_t vcsec_num_entries; 5156 } verify_checkpoint_sm_entry_cb_arg_t; 5157 5158 #define ENTRIES_PER_PROGRESS_UPDATE 10000 5159 5160 static int 5161 verify_checkpoint_sm_entry_cb(space_map_entry_t *sme, void *arg) 5162 { 5163 verify_checkpoint_sm_entry_cb_arg_t *vcsec = arg; 5164 vdev_t *vd = vcsec->vcsec_vd; 5165 metaslab_t *ms = vd->vdev_ms[sme->sme_offset >> vd->vdev_ms_shift]; 5166 uint64_t end = sme->sme_offset + sme->sme_run; 5167 5168 ASSERT(sme->sme_type == SM_FREE); 5169 5170 if ((vcsec->vcsec_entryid % ENTRIES_PER_PROGRESS_UPDATE) == 0) { 5171 (void) fprintf(stderr, 5172 "\rverifying vdev %llu, space map entry %llu of %llu ...", 5173 (longlong_t)vd->vdev_id, 5174 (longlong_t)vcsec->vcsec_entryid, 5175 (longlong_t)vcsec->vcsec_num_entries); 5176 } 5177 vcsec->vcsec_entryid++; 5178 5179 /* 5180 * See comment in checkpoint_sm_exclude_entry_cb() 5181 */ 5182 VERIFY3U(sme->sme_offset, >=, ms->ms_start); 5183 VERIFY3U(end, <=, ms->ms_start + ms->ms_size); 5184 5185 /* 5186 * The entries in the vdev_checkpoint_sm should be marked as 5187 * allocated in the checkpointed state of the pool, therefore 5188 * their respective ms_allocateable trees should not contain them. 5189 */ 5190 mutex_enter(&ms->ms_lock); 5191 range_tree_verify_not_present(ms->ms_allocatable, 5192 sme->sme_offset, sme->sme_run); 5193 mutex_exit(&ms->ms_lock); 5194 5195 return (0); 5196 } 5197 5198 /* 5199 * Verify that all segments in the vdev_checkpoint_sm are allocated 5200 * according to the checkpoint's ms_sm (i.e. are not in the checkpoint's 5201 * ms_allocatable). 5202 * 5203 * Do so by comparing the checkpoint space maps (vdev_checkpoint_sm) of 5204 * each vdev in the current state of the pool to the metaslab space maps 5205 * (ms_sm) of the checkpointed state of the pool. 5206 * 5207 * Note that the function changes the state of the ms_allocatable 5208 * trees of the current spa_t. The entries of these ms_allocatable 5209 * trees are cleared out and then repopulated from with the free 5210 * entries of their respective ms_sm space maps. 5211 */ 5212 static void 5213 verify_checkpoint_vdev_spacemaps(spa_t *checkpoint, spa_t *current) 5214 { 5215 vdev_t *ckpoint_rvd = checkpoint->spa_root_vdev; 5216 vdev_t *current_rvd = current->spa_root_vdev; 5217 5218 load_concrete_ms_allocatable_trees(checkpoint, SM_FREE); 5219 5220 for (uint64_t c = 0; c < ckpoint_rvd->vdev_children; c++) { 5221 vdev_t *ckpoint_vd = ckpoint_rvd->vdev_child[c]; 5222 vdev_t *current_vd = current_rvd->vdev_child[c]; 5223 5224 space_map_t *checkpoint_sm = NULL; 5225 uint64_t checkpoint_sm_obj; 5226 5227 if (ckpoint_vd->vdev_ops == &vdev_indirect_ops) { 5228 /* 5229 * Since we don't allow device removal in a pool 5230 * that has a checkpoint, we expect that all removed 5231 * vdevs were removed from the pool before the 5232 * checkpoint. 5233 */ 5234 ASSERT3P(current_vd->vdev_ops, ==, &vdev_indirect_ops); 5235 continue; 5236 } 5237 5238 /* 5239 * If the checkpoint space map doesn't exist, then nothing 5240 * here is checkpointed so there's nothing to verify. 5241 */ 5242 if (current_vd->vdev_top_zap == 0 || 5243 zap_contains(spa_meta_objset(current), 5244 current_vd->vdev_top_zap, 5245 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM) != 0) 5246 continue; 5247 5248 VERIFY0(zap_lookup(spa_meta_objset(current), 5249 current_vd->vdev_top_zap, VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, 5250 sizeof (uint64_t), 1, &checkpoint_sm_obj)); 5251 5252 VERIFY0(space_map_open(&checkpoint_sm, spa_meta_objset(current), 5253 checkpoint_sm_obj, 0, current_vd->vdev_asize, 5254 current_vd->vdev_ashift)); 5255 5256 verify_checkpoint_sm_entry_cb_arg_t vcsec; 5257 vcsec.vcsec_vd = ckpoint_vd; 5258 vcsec.vcsec_entryid = 0; 5259 vcsec.vcsec_num_entries = 5260 space_map_length(checkpoint_sm) / sizeof (uint64_t); 5261 VERIFY0(space_map_iterate(checkpoint_sm, 5262 space_map_length(checkpoint_sm), 5263 verify_checkpoint_sm_entry_cb, &vcsec)); 5264 dump_spacemap(current->spa_meta_objset, checkpoint_sm); 5265 space_map_close(checkpoint_sm); 5266 } 5267 5268 /* 5269 * If we've added vdevs since we took the checkpoint, ensure 5270 * that their checkpoint space maps are empty. 5271 */ 5272 if (ckpoint_rvd->vdev_children < current_rvd->vdev_children) { 5273 for (uint64_t c = ckpoint_rvd->vdev_children; 5274 c < current_rvd->vdev_children; c++) { 5275 vdev_t *current_vd = current_rvd->vdev_child[c]; 5276 VERIFY3P(current_vd->vdev_checkpoint_sm, ==, NULL); 5277 } 5278 } 5279 5280 /* for cleaner progress output */ 5281 (void) fprintf(stderr, "\n"); 5282 } 5283 5284 /* 5285 * Verifies that all space that's allocated in the checkpoint is 5286 * still allocated in the current version, by checking that everything 5287 * in checkpoint's ms_allocatable (which is actually allocated, not 5288 * allocatable/free) is not present in current's ms_allocatable. 5289 * 5290 * Note that the function changes the state of the ms_allocatable 5291 * trees of both spas when called. The entries of all ms_allocatable 5292 * trees are cleared out and then repopulated from their respective 5293 * ms_sm space maps. In the checkpointed state we load the allocated 5294 * entries, and in the current state we load the free entries. 5295 */ 5296 static void 5297 verify_checkpoint_ms_spacemaps(spa_t *checkpoint, spa_t *current) 5298 { 5299 vdev_t *ckpoint_rvd = checkpoint->spa_root_vdev; 5300 vdev_t *current_rvd = current->spa_root_vdev; 5301 5302 load_concrete_ms_allocatable_trees(checkpoint, SM_ALLOC); 5303 load_concrete_ms_allocatable_trees(current, SM_FREE); 5304 5305 for (uint64_t i = 0; i < ckpoint_rvd->vdev_children; i++) { 5306 vdev_t *ckpoint_vd = ckpoint_rvd->vdev_child[i]; 5307 vdev_t *current_vd = current_rvd->vdev_child[i]; 5308 5309 if (ckpoint_vd->vdev_ops == &vdev_indirect_ops) { 5310 /* 5311 * See comment in verify_checkpoint_vdev_spacemaps() 5312 */ 5313 ASSERT3P(current_vd->vdev_ops, ==, &vdev_indirect_ops); 5314 continue; 5315 } 5316 5317 for (uint64_t m = 0; m < ckpoint_vd->vdev_ms_count; m++) { 5318 metaslab_t *ckpoint_msp = ckpoint_vd->vdev_ms[m]; 5319 metaslab_t *current_msp = current_vd->vdev_ms[m]; 5320 5321 (void) fprintf(stderr, 5322 "\rverifying vdev %llu of %llu, " 5323 "metaslab %llu of %llu ...", 5324 (longlong_t)current_vd->vdev_id, 5325 (longlong_t)current_rvd->vdev_children, 5326 (longlong_t)current_vd->vdev_ms[m]->ms_id, 5327 (longlong_t)current_vd->vdev_ms_count); 5328 5329 /* 5330 * We walk through the ms_allocatable trees that 5331 * are loaded with the allocated blocks from the 5332 * ms_sm spacemaps of the checkpoint. For each 5333 * one of these ranges we ensure that none of them 5334 * exists in the ms_allocatable trees of the 5335 * current state which are loaded with the ranges 5336 * that are currently free. 5337 * 5338 * This way we ensure that none of the blocks that 5339 * are part of the checkpoint were freed by mistake. 5340 */ 5341 range_tree_walk(ckpoint_msp->ms_allocatable, 5342 (range_tree_func_t *)range_tree_verify_not_present, 5343 current_msp->ms_allocatable); 5344 } 5345 } 5346 5347 /* for cleaner progress output */ 5348 (void) fprintf(stderr, "\n"); 5349 } 5350 5351 static void 5352 verify_checkpoint_blocks(spa_t *spa) 5353 { 5354 ASSERT(!dump_opt['L']); 5355 5356 spa_t *checkpoint_spa; 5357 char *checkpoint_pool; 5358 nvlist_t *config = NULL; 5359 int error = 0; 5360 5361 /* 5362 * We import the checkpointed state of the pool (under a different 5363 * name) so we can do verification on it against the current state 5364 * of the pool. 5365 */ 5366 checkpoint_pool = import_checkpointed_state(spa->spa_name, config, 5367 NULL); 5368 ASSERT(strcmp(spa->spa_name, checkpoint_pool) != 0); 5369 5370 error = spa_open(checkpoint_pool, &checkpoint_spa, FTAG); 5371 if (error != 0) { 5372 fatal("Tried to open pool \"%s\" but spa_open() failed with " 5373 "error %d\n", checkpoint_pool, error); 5374 } 5375 5376 /* 5377 * Ensure that ranges in the checkpoint space maps of each vdev 5378 * are allocated according to the checkpointed state's metaslab 5379 * space maps. 5380 */ 5381 verify_checkpoint_vdev_spacemaps(checkpoint_spa, spa); 5382 5383 /* 5384 * Ensure that allocated ranges in the checkpoint's metaslab 5385 * space maps remain allocated in the metaslab space maps of 5386 * the current state. 5387 */ 5388 verify_checkpoint_ms_spacemaps(checkpoint_spa, spa); 5389 5390 /* 5391 * Once we are done, we get rid of the checkpointed state. 5392 */ 5393 spa_close(checkpoint_spa, FTAG); 5394 free(checkpoint_pool); 5395 } 5396 5397 static void 5398 dump_leftover_checkpoint_blocks(spa_t *spa) 5399 { 5400 vdev_t *rvd = spa->spa_root_vdev; 5401 5402 for (uint64_t i = 0; i < rvd->vdev_children; i++) { 5403 vdev_t *vd = rvd->vdev_child[i]; 5404 5405 space_map_t *checkpoint_sm = NULL; 5406 uint64_t checkpoint_sm_obj; 5407 5408 if (vd->vdev_top_zap == 0) 5409 continue; 5410 5411 if (zap_contains(spa_meta_objset(spa), vd->vdev_top_zap, 5412 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM) != 0) 5413 continue; 5414 5415 VERIFY0(zap_lookup(spa_meta_objset(spa), vd->vdev_top_zap, 5416 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, 5417 sizeof (uint64_t), 1, &checkpoint_sm_obj)); 5418 5419 VERIFY0(space_map_open(&checkpoint_sm, spa_meta_objset(spa), 5420 checkpoint_sm_obj, 0, vd->vdev_asize, vd->vdev_ashift)); 5421 dump_spacemap(spa->spa_meta_objset, checkpoint_sm); 5422 space_map_close(checkpoint_sm); 5423 } 5424 } 5425 5426 static int 5427 verify_checkpoint(spa_t *spa) 5428 { 5429 uberblock_t checkpoint; 5430 int error; 5431 5432 if (!spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) 5433 return (0); 5434 5435 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, 5436 DMU_POOL_ZPOOL_CHECKPOINT, sizeof (uint64_t), 5437 sizeof (uberblock_t) / sizeof (uint64_t), &checkpoint); 5438 5439 if (error == ENOENT && !dump_opt['L']) { 5440 /* 5441 * If the feature is active but the uberblock is missing 5442 * then we must be in the middle of discarding the 5443 * checkpoint. 5444 */ 5445 (void) printf("\nPartially discarded checkpoint " 5446 "state found:\n"); 5447 dump_leftover_checkpoint_blocks(spa); 5448 return (0); 5449 } else if (error != 0) { 5450 (void) printf("lookup error %d when looking for " 5451 "checkpointed uberblock in MOS\n", error); 5452 return (error); 5453 } 5454 dump_uberblock(&checkpoint, "\nCheckpointed uberblock found:\n", "\n"); 5455 5456 if (checkpoint.ub_checkpoint_txg == 0) { 5457 (void) printf("\nub_checkpoint_txg not set in checkpointed " 5458 "uberblock\n"); 5459 error = 3; 5460 } 5461 5462 if (error == 0 && !dump_opt['L']) 5463 verify_checkpoint_blocks(spa); 5464 5465 return (error); 5466 } 5467 5468 /* ARGSUSED */ 5469 static void 5470 mos_leaks_cb(void *arg, uint64_t start, uint64_t size) 5471 { 5472 for (uint64_t i = start; i < size; i++) { 5473 (void) printf("MOS object %llu referenced but not allocated\n", 5474 (u_longlong_t)i); 5475 } 5476 } 5477 5478 static range_tree_t *mos_refd_objs; 5479 5480 static void 5481 mos_obj_refd(uint64_t obj) 5482 { 5483 if (obj != 0 && mos_refd_objs != NULL) 5484 range_tree_add(mos_refd_objs, obj, 1); 5485 } 5486 5487 static void 5488 mos_leak_vdev_top_zap(vdev_t *vd) 5489 { 5490 uint64_t ms_flush_data_obj; 5491 5492 int error = zap_lookup(spa_meta_objset(vd->vdev_spa), 5493 vd->vdev_top_zap, VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, 5494 sizeof (ms_flush_data_obj), 1, &ms_flush_data_obj); 5495 if (error == ENOENT) 5496 return; 5497 ASSERT0(error); 5498 5499 mos_obj_refd(ms_flush_data_obj); 5500 } 5501 5502 static void 5503 mos_leak_vdev(vdev_t *vd) 5504 { 5505 mos_obj_refd(vd->vdev_dtl_object); 5506 mos_obj_refd(vd->vdev_ms_array); 5507 mos_obj_refd(vd->vdev_indirect_config.vic_births_object); 5508 mos_obj_refd(vd->vdev_indirect_config.vic_mapping_object); 5509 mos_obj_refd(vd->vdev_leaf_zap); 5510 if (vd->vdev_checkpoint_sm != NULL) 5511 mos_obj_refd(vd->vdev_checkpoint_sm->sm_object); 5512 if (vd->vdev_indirect_mapping != NULL) { 5513 mos_obj_refd(vd->vdev_indirect_mapping-> 5514 vim_phys->vimp_counts_object); 5515 } 5516 if (vd->vdev_obsolete_sm != NULL) 5517 mos_obj_refd(vd->vdev_obsolete_sm->sm_object); 5518 5519 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 5520 metaslab_t *ms = vd->vdev_ms[m]; 5521 mos_obj_refd(space_map_object(ms->ms_sm)); 5522 } 5523 5524 if (vd->vdev_top_zap != 0) { 5525 mos_obj_refd(vd->vdev_top_zap); 5526 mos_leak_vdev_top_zap(vd); 5527 } 5528 5529 for (uint64_t c = 0; c < vd->vdev_children; c++) { 5530 mos_leak_vdev(vd->vdev_child[c]); 5531 } 5532 } 5533 5534 static void 5535 mos_leak_log_spacemaps(spa_t *spa) 5536 { 5537 uint64_t spacemap_zap; 5538 5539 int error = zap_lookup(spa_meta_objset(spa), 5540 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_LOG_SPACEMAP_ZAP, 5541 sizeof (spacemap_zap), 1, &spacemap_zap); 5542 if (error == ENOENT) 5543 return; 5544 ASSERT0(error); 5545 5546 mos_obj_refd(spacemap_zap); 5547 for (spa_log_sm_t *sls = avl_first(&spa->spa_sm_logs_by_txg); 5548 sls; sls = AVL_NEXT(&spa->spa_sm_logs_by_txg, sls)) 5549 mos_obj_refd(sls->sls_sm_obj); 5550 } 5551 5552 static int 5553 dump_mos_leaks(spa_t *spa) 5554 { 5555 int rv = 0; 5556 objset_t *mos = spa->spa_meta_objset; 5557 dsl_pool_t *dp = spa->spa_dsl_pool; 5558 5559 /* Visit and mark all referenced objects in the MOS */ 5560 5561 mos_obj_refd(DMU_POOL_DIRECTORY_OBJECT); 5562 mos_obj_refd(spa->spa_pool_props_object); 5563 mos_obj_refd(spa->spa_config_object); 5564 mos_obj_refd(spa->spa_ddt_stat_object); 5565 mos_obj_refd(spa->spa_feat_desc_obj); 5566 mos_obj_refd(spa->spa_feat_enabled_txg_obj); 5567 mos_obj_refd(spa->spa_feat_for_read_obj); 5568 mos_obj_refd(spa->spa_feat_for_write_obj); 5569 mos_obj_refd(spa->spa_history); 5570 mos_obj_refd(spa->spa_errlog_last); 5571 mos_obj_refd(spa->spa_errlog_scrub); 5572 mos_obj_refd(spa->spa_all_vdev_zaps); 5573 mos_obj_refd(spa->spa_dsl_pool->dp_bptree_obj); 5574 mos_obj_refd(spa->spa_dsl_pool->dp_tmp_userrefs_obj); 5575 mos_obj_refd(spa->spa_dsl_pool->dp_scan->scn_phys.scn_queue_obj); 5576 bpobj_count_refd(&spa->spa_deferred_bpobj); 5577 mos_obj_refd(dp->dp_empty_bpobj); 5578 bpobj_count_refd(&dp->dp_obsolete_bpobj); 5579 bpobj_count_refd(&dp->dp_free_bpobj); 5580 mos_obj_refd(spa->spa_l2cache.sav_object); 5581 mos_obj_refd(spa->spa_spares.sav_object); 5582 5583 if (spa->spa_syncing_log_sm != NULL) 5584 mos_obj_refd(spa->spa_syncing_log_sm->sm_object); 5585 mos_leak_log_spacemaps(spa); 5586 5587 mos_obj_refd(spa->spa_condensing_indirect_phys. 5588 scip_next_mapping_object); 5589 mos_obj_refd(spa->spa_condensing_indirect_phys. 5590 scip_prev_obsolete_sm_object); 5591 if (spa->spa_condensing_indirect_phys.scip_next_mapping_object != 0) { 5592 vdev_indirect_mapping_t *vim = 5593 vdev_indirect_mapping_open(mos, 5594 spa->spa_condensing_indirect_phys.scip_next_mapping_object); 5595 mos_obj_refd(vim->vim_phys->vimp_counts_object); 5596 vdev_indirect_mapping_close(vim); 5597 } 5598 5599 if (dp->dp_origin_snap != NULL) { 5600 dsl_dataset_t *ds; 5601 5602 dsl_pool_config_enter(dp, FTAG); 5603 VERIFY0(dsl_dataset_hold_obj(dp, 5604 dsl_dataset_phys(dp->dp_origin_snap)->ds_next_snap_obj, 5605 FTAG, &ds)); 5606 count_ds_mos_objects(ds); 5607 dump_deadlist(&ds->ds_deadlist); 5608 dsl_dataset_rele(ds, FTAG); 5609 dsl_pool_config_exit(dp, FTAG); 5610 5611 count_ds_mos_objects(dp->dp_origin_snap); 5612 dump_deadlist(&dp->dp_origin_snap->ds_deadlist); 5613 } 5614 count_dir_mos_objects(dp->dp_mos_dir); 5615 if (dp->dp_free_dir != NULL) 5616 count_dir_mos_objects(dp->dp_free_dir); 5617 if (dp->dp_leak_dir != NULL) 5618 count_dir_mos_objects(dp->dp_leak_dir); 5619 5620 mos_leak_vdev(spa->spa_root_vdev); 5621 5622 for (uint64_t class = 0; class < DDT_CLASSES; class++) { 5623 for (uint64_t type = 0; type < DDT_TYPES; type++) { 5624 for (uint64_t cksum = 0; 5625 cksum < ZIO_CHECKSUM_FUNCTIONS; cksum++) { 5626 ddt_t *ddt = spa->spa_ddt[cksum]; 5627 mos_obj_refd(ddt->ddt_object[type][class]); 5628 } 5629 } 5630 } 5631 5632 /* 5633 * Visit all allocated objects and make sure they are referenced. 5634 */ 5635 uint64_t object = 0; 5636 while (dmu_object_next(mos, &object, B_FALSE, 0) == 0) { 5637 if (range_tree_contains(mos_refd_objs, object, 1)) { 5638 range_tree_remove(mos_refd_objs, object, 1); 5639 } else { 5640 dmu_object_info_t doi; 5641 const char *name; 5642 dmu_object_info(mos, object, &doi); 5643 if (doi.doi_type & DMU_OT_NEWTYPE) { 5644 dmu_object_byteswap_t bswap = 5645 DMU_OT_BYTESWAP(doi.doi_type); 5646 name = dmu_ot_byteswap[bswap].ob_name; 5647 } else { 5648 name = dmu_ot[doi.doi_type].ot_name; 5649 } 5650 5651 (void) printf("MOS object %llu (%s) leaked\n", 5652 (u_longlong_t)object, name); 5653 rv = 2; 5654 } 5655 } 5656 (void) range_tree_walk(mos_refd_objs, mos_leaks_cb, NULL); 5657 if (!range_tree_is_empty(mos_refd_objs)) 5658 rv = 2; 5659 range_tree_vacate(mos_refd_objs, NULL, NULL); 5660 range_tree_destroy(mos_refd_objs); 5661 return (rv); 5662 } 5663 5664 typedef struct log_sm_obsolete_stats_arg { 5665 uint64_t lsos_current_txg; 5666 5667 uint64_t lsos_total_entries; 5668 uint64_t lsos_valid_entries; 5669 5670 uint64_t lsos_sm_entries; 5671 uint64_t lsos_valid_sm_entries; 5672 } log_sm_obsolete_stats_arg_t; 5673 5674 static int 5675 log_spacemap_obsolete_stats_cb(spa_t *spa, space_map_entry_t *sme, 5676 uint64_t txg, void *arg) 5677 { 5678 log_sm_obsolete_stats_arg_t *lsos = arg; 5679 uint64_t offset = sme->sme_offset; 5680 uint64_t vdev_id = sme->sme_vdev; 5681 5682 if (lsos->lsos_current_txg == 0) { 5683 /* this is the first log */ 5684 lsos->lsos_current_txg = txg; 5685 } else if (lsos->lsos_current_txg < txg) { 5686 /* we just changed log - print stats and reset */ 5687 (void) printf("%-8llu valid entries out of %-8llu - txg %llu\n", 5688 (u_longlong_t)lsos->lsos_valid_sm_entries, 5689 (u_longlong_t)lsos->lsos_sm_entries, 5690 (u_longlong_t)lsos->lsos_current_txg); 5691 lsos->lsos_valid_sm_entries = 0; 5692 lsos->lsos_sm_entries = 0; 5693 lsos->lsos_current_txg = txg; 5694 } 5695 ASSERT3U(lsos->lsos_current_txg, ==, txg); 5696 5697 lsos->lsos_sm_entries++; 5698 lsos->lsos_total_entries++; 5699 5700 vdev_t *vd = vdev_lookup_top(spa, vdev_id); 5701 if (!vdev_is_concrete(vd)) 5702 return (0); 5703 5704 metaslab_t *ms = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 5705 ASSERT(sme->sme_type == SM_ALLOC || sme->sme_type == SM_FREE); 5706 5707 if (txg < metaslab_unflushed_txg(ms)) 5708 return (0); 5709 lsos->lsos_valid_sm_entries++; 5710 lsos->lsos_valid_entries++; 5711 return (0); 5712 } 5713 5714 static void 5715 dump_log_spacemap_obsolete_stats(spa_t *spa) 5716 { 5717 if (!spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) 5718 return; 5719 5720 log_sm_obsolete_stats_arg_t lsos; 5721 bzero(&lsos, sizeof (lsos)); 5722 5723 (void) printf("Log Space Map Obsolete Entry Statistics:\n"); 5724 5725 iterate_through_spacemap_logs(spa, 5726 log_spacemap_obsolete_stats_cb, &lsos); 5727 5728 /* print stats for latest log */ 5729 (void) printf("%-8llu valid entries out of %-8llu - txg %llu\n", 5730 (u_longlong_t)lsos.lsos_valid_sm_entries, 5731 (u_longlong_t)lsos.lsos_sm_entries, 5732 (u_longlong_t)lsos.lsos_current_txg); 5733 5734 (void) printf("%-8llu valid entries out of %-8llu - total\n\n", 5735 (u_longlong_t)lsos.lsos_valid_entries, 5736 (u_longlong_t)lsos.lsos_total_entries); 5737 } 5738 5739 static void 5740 dump_zpool(spa_t *spa) 5741 { 5742 dsl_pool_t *dp = spa_get_dsl(spa); 5743 int rc = 0; 5744 5745 if (dump_opt['S']) { 5746 dump_simulated_ddt(spa); 5747 return; 5748 } 5749 5750 if (!dump_opt['e'] && dump_opt['C'] > 1) { 5751 (void) printf("\nCached configuration:\n"); 5752 dump_nvlist(spa->spa_config, 8); 5753 } 5754 5755 if (dump_opt['C']) 5756 dump_config(spa); 5757 5758 if (dump_opt['u']) 5759 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n"); 5760 5761 if (dump_opt['D']) 5762 dump_all_ddts(spa); 5763 5764 if (dump_opt['d'] > 2 || dump_opt['m']) 5765 dump_metaslabs(spa); 5766 if (dump_opt['M']) 5767 dump_metaslab_groups(spa); 5768 if (dump_opt['d'] > 2 || dump_opt['m']) { 5769 dump_log_spacemaps(spa); 5770 dump_log_spacemap_obsolete_stats(spa); 5771 } 5772 5773 if (dump_opt['d'] || dump_opt['i']) { 5774 mos_refd_objs = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 5775 0); 5776 dump_dir(dp->dp_meta_objset); 5777 5778 if (dump_opt['d'] >= 3) { 5779 dsl_pool_t *dp = spa->spa_dsl_pool; 5780 dump_full_bpobj(&spa->spa_deferred_bpobj, 5781 "Deferred frees", 0); 5782 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 5783 dump_full_bpobj(&dp->dp_free_bpobj, 5784 "Pool snapshot frees", 0); 5785 } 5786 if (bpobj_is_open(&dp->dp_obsolete_bpobj)) { 5787 ASSERT(spa_feature_is_enabled(spa, 5788 SPA_FEATURE_DEVICE_REMOVAL)); 5789 dump_full_bpobj(&dp->dp_obsolete_bpobj, 5790 "Pool obsolete blocks", 0); 5791 } 5792 5793 if (spa_feature_is_active(spa, 5794 SPA_FEATURE_ASYNC_DESTROY)) { 5795 dump_bptree(spa->spa_meta_objset, 5796 dp->dp_bptree_obj, 5797 "Pool dataset frees"); 5798 } 5799 dump_dtl(spa->spa_root_vdev, 0); 5800 } 5801 (void) dmu_objset_find(spa_name(spa), dump_one_dir, 5802 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5803 5804 if (rc == 0 && !dump_opt['L']) 5805 rc = dump_mos_leaks(spa); 5806 5807 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 5808 uint64_t refcount; 5809 5810 if (!(spa_feature_table[f].fi_flags & 5811 ZFEATURE_FLAG_PER_DATASET) || 5812 !spa_feature_is_enabled(spa, f)) { 5813 ASSERT0(dataset_feature_count[f]); 5814 continue; 5815 } 5816 (void) feature_get_refcount(spa, 5817 &spa_feature_table[f], &refcount); 5818 if (dataset_feature_count[f] != refcount) { 5819 (void) printf("%s feature refcount mismatch: " 5820 "%lld datasets != %lld refcount\n", 5821 spa_feature_table[f].fi_uname, 5822 (longlong_t)dataset_feature_count[f], 5823 (longlong_t)refcount); 5824 rc = 2; 5825 } else { 5826 (void) printf("Verified %s feature refcount " 5827 "of %llu is correct\n", 5828 spa_feature_table[f].fi_uname, 5829 (longlong_t)refcount); 5830 } 5831 } 5832 5833 if (rc == 0) 5834 rc = verify_device_removal_feature_counts(spa); 5835 } 5836 5837 if (rc == 0 && (dump_opt['b'] || dump_opt['c'])) 5838 rc = dump_block_stats(spa); 5839 5840 if (rc == 0) 5841 rc = verify_spacemap_refcounts(spa); 5842 5843 if (dump_opt['s']) 5844 show_pool_stats(spa); 5845 5846 if (dump_opt['h']) 5847 dump_history(spa); 5848 5849 if (rc == 0) 5850 rc = verify_checkpoint(spa); 5851 5852 if (rc != 0) { 5853 dump_debug_buffer(); 5854 exit(rc); 5855 } 5856 } 5857 5858 #define ZDB_FLAG_CHECKSUM 0x0001 5859 #define ZDB_FLAG_DECOMPRESS 0x0002 5860 #define ZDB_FLAG_BSWAP 0x0004 5861 #define ZDB_FLAG_GBH 0x0008 5862 #define ZDB_FLAG_INDIRECT 0x0010 5863 #define ZDB_FLAG_PHYS 0x0020 5864 #define ZDB_FLAG_RAW 0x0040 5865 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 5866 5867 static int flagbits[256]; 5868 5869 static void 5870 zdb_print_blkptr(blkptr_t *bp, int flags) 5871 { 5872 char blkbuf[BP_SPRINTF_LEN]; 5873 5874 if (flags & ZDB_FLAG_BSWAP) 5875 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 5876 5877 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 5878 (void) printf("%s\n", blkbuf); 5879 } 5880 5881 static void 5882 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 5883 { 5884 int i; 5885 5886 for (i = 0; i < nbps; i++) 5887 zdb_print_blkptr(&bp[i], flags); 5888 } 5889 5890 static void 5891 zdb_dump_gbh(void *buf, int flags) 5892 { 5893 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 5894 } 5895 5896 static void 5897 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 5898 { 5899 if (flags & ZDB_FLAG_BSWAP) 5900 byteswap_uint64_array(buf, size); 5901 (void) write(1, buf, size); 5902 } 5903 5904 static void 5905 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 5906 { 5907 uint64_t *d = (uint64_t *)buf; 5908 unsigned nwords = size / sizeof (uint64_t); 5909 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 5910 unsigned i, j; 5911 const char *hdr; 5912 char *c; 5913 5914 5915 if (do_bswap) 5916 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 5917 else 5918 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 5919 5920 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 5921 5922 for (i = 0; i < nwords; i += 2) { 5923 (void) printf("%06llx: %016llx %016llx ", 5924 (u_longlong_t)(i * sizeof (uint64_t)), 5925 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 5926 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 5927 5928 c = (char *)&d[i]; 5929 for (j = 0; j < 2 * sizeof (uint64_t); j++) 5930 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 5931 (void) printf("\n"); 5932 } 5933 } 5934 5935 /* 5936 * There are two acceptable formats: 5937 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 5938 * child[.child]* - For example: 0.1.1 5939 * 5940 * The second form can be used to specify arbitrary vdevs anywhere 5941 * in the heirarchy. For example, in a pool with a mirror of 5942 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 5943 */ 5944 static vdev_t * 5945 zdb_vdev_lookup(vdev_t *vdev, const char *path) 5946 { 5947 char *s, *p, *q; 5948 unsigned i; 5949 5950 if (vdev == NULL) 5951 return (NULL); 5952 5953 /* First, assume the x.x.x.x format */ 5954 i = strtoul(path, &s, 10); 5955 if (s == path || (s && *s != '.' && *s != '\0')) 5956 goto name; 5957 if (i >= vdev->vdev_children) 5958 return (NULL); 5959 5960 vdev = vdev->vdev_child[i]; 5961 if (*s == '\0') 5962 return (vdev); 5963 return (zdb_vdev_lookup(vdev, s+1)); 5964 5965 name: 5966 for (i = 0; i < vdev->vdev_children; i++) { 5967 vdev_t *vc = vdev->vdev_child[i]; 5968 5969 if (vc->vdev_path == NULL) { 5970 vc = zdb_vdev_lookup(vc, path); 5971 if (vc == NULL) 5972 continue; 5973 else 5974 return (vc); 5975 } 5976 5977 p = strrchr(vc->vdev_path, '/'); 5978 p = p ? p + 1 : vc->vdev_path; 5979 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 5980 5981 if (strcmp(vc->vdev_path, path) == 0) 5982 return (vc); 5983 if (strcmp(p, path) == 0) 5984 return (vc); 5985 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 5986 return (vc); 5987 } 5988 5989 return (NULL); 5990 } 5991 5992 /* ARGSUSED */ 5993 static int 5994 random_get_pseudo_bytes_cb(void *buf, size_t len, void *unused) 5995 { 5996 return (random_get_pseudo_bytes(buf, len)); 5997 } 5998 5999 /* 6000 * Read a block from a pool and print it out. The syntax of the 6001 * block descriptor is: 6002 * 6003 * pool:vdev_specifier:offset:size[:flags] 6004 * 6005 * pool - The name of the pool you wish to read from 6006 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 6007 * offset - offset, in hex, in bytes 6008 * size - Amount of data to read, in hex, in bytes 6009 * flags - A string of characters specifying options 6010 * b: Decode a blkptr at given offset within block 6011 * *c: Calculate and display checksums 6012 * d: Decompress data before dumping 6013 * e: Byteswap data before dumping 6014 * g: Display data as a gang block header 6015 * i: Display as an indirect block 6016 * p: Do I/O to physical offset 6017 * r: Dump raw data to stdout 6018 * 6019 * * = not yet implemented 6020 */ 6021 static void 6022 zdb_read_block(char *thing, spa_t *spa) 6023 { 6024 blkptr_t blk, *bp = &blk; 6025 dva_t *dva = bp->blk_dva; 6026 int flags = 0; 6027 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0; 6028 zio_t *zio; 6029 vdev_t *vd; 6030 abd_t *pabd; 6031 void *lbuf, *buf; 6032 const char *s, *vdev; 6033 char *p, *dup, *flagstr; 6034 int i, error; 6035 6036 dup = strdup(thing); 6037 s = strtok(dup, ":"); 6038 vdev = s ? s : ""; 6039 s = strtok(NULL, ":"); 6040 offset = strtoull(s ? s : "", NULL, 16); 6041 s = strtok(NULL, ":"); 6042 size = strtoull(s ? s : "", NULL, 16); 6043 s = strtok(NULL, ":"); 6044 if (s) 6045 flagstr = strdup(s); 6046 else 6047 flagstr = strdup(""); 6048 6049 s = NULL; 6050 if (size == 0) 6051 s = "size must not be zero"; 6052 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 6053 s = "size must be a multiple of sector size"; 6054 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 6055 s = "offset must be a multiple of sector size"; 6056 if (s) { 6057 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 6058 free(dup); 6059 return; 6060 } 6061 6062 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 6063 for (i = 0; flagstr[i]; i++) { 6064 int bit = flagbits[(uchar_t)flagstr[i]]; 6065 6066 if (bit == 0) { 6067 (void) printf("***Invalid flag: %c\n", 6068 flagstr[i]); 6069 continue; 6070 } 6071 flags |= bit; 6072 6073 /* If it's not something with an argument, keep going */ 6074 if ((bit & (ZDB_FLAG_CHECKSUM | 6075 ZDB_FLAG_PRINT_BLKPTR)) == 0) 6076 continue; 6077 6078 p = &flagstr[i + 1]; 6079 if (bit == ZDB_FLAG_PRINT_BLKPTR) 6080 blkptr_offset = strtoull(p, &p, 16); 6081 if (*p != ':' && *p != '\0') { 6082 (void) printf("***Invalid flag arg: '%s'\n", s); 6083 free(dup); 6084 return; 6085 } 6086 } 6087 } 6088 free(flagstr); 6089 6090 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 6091 if (vd == NULL) { 6092 (void) printf("***Invalid vdev: %s\n", vdev); 6093 free(dup); 6094 return; 6095 } else { 6096 if (vd->vdev_path) 6097 (void) fprintf(stderr, "Found vdev: %s\n", 6098 vd->vdev_path); 6099 else 6100 (void) fprintf(stderr, "Found vdev type: %s\n", 6101 vd->vdev_ops->vdev_op_type); 6102 } 6103 6104 psize = size; 6105 lsize = size; 6106 6107 pabd = abd_alloc_linear(SPA_MAXBLOCKSIZE, B_FALSE); 6108 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 6109 6110 BP_ZERO(bp); 6111 6112 DVA_SET_VDEV(&dva[0], vd->vdev_id); 6113 DVA_SET_OFFSET(&dva[0], offset); 6114 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH)); 6115 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize)); 6116 6117 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL); 6118 6119 BP_SET_LSIZE(bp, lsize); 6120 BP_SET_PSIZE(bp, psize); 6121 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF); 6122 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF); 6123 BP_SET_TYPE(bp, DMU_OT_NONE); 6124 BP_SET_LEVEL(bp, 0); 6125 BP_SET_DEDUP(bp, 0); 6126 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER); 6127 6128 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 6129 zio = zio_root(spa, NULL, NULL, 0); 6130 6131 if (vd == vd->vdev_top) { 6132 /* 6133 * Treat this as a normal block read. 6134 */ 6135 zio_nowait(zio_read(zio, spa, bp, pabd, psize, NULL, NULL, 6136 ZIO_PRIORITY_SYNC_READ, 6137 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL)); 6138 } else { 6139 /* 6140 * Treat this as a vdev child I/O. 6141 */ 6142 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pabd, 6143 psize, ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, 6144 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 6145 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | 6146 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW | ZIO_FLAG_OPTIONAL, 6147 NULL, NULL)); 6148 } 6149 6150 error = zio_wait(zio); 6151 spa_config_exit(spa, SCL_STATE, FTAG); 6152 6153 if (error) { 6154 (void) printf("Read of %s failed, error: %d\n", thing, error); 6155 goto out; 6156 } 6157 6158 if (flags & ZDB_FLAG_DECOMPRESS) { 6159 /* 6160 * We don't know how the data was compressed, so just try 6161 * every decompress function at every inflated blocksize. 6162 */ 6163 enum zio_compress c; 6164 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 6165 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 6166 6167 abd_copy_to_buf(pbuf2, pabd, psize); 6168 6169 VERIFY0(abd_iterate_func(pabd, psize, SPA_MAXBLOCKSIZE - psize, 6170 random_get_pseudo_bytes_cb, NULL)); 6171 6172 VERIFY0(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize, 6173 SPA_MAXBLOCKSIZE - psize)); 6174 6175 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize; 6176 lsize -= SPA_MINBLOCKSIZE) { 6177 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) { 6178 if (zio_decompress_data(c, pabd, 6179 lbuf, psize, lsize) == 0 && 6180 zio_decompress_data_buf(c, pbuf2, 6181 lbuf2, psize, lsize) == 0 && 6182 bcmp(lbuf, lbuf2, lsize) == 0) 6183 break; 6184 } 6185 if (c != ZIO_COMPRESS_FUNCTIONS) 6186 break; 6187 lsize -= SPA_MINBLOCKSIZE; 6188 } 6189 6190 umem_free(pbuf2, SPA_MAXBLOCKSIZE); 6191 umem_free(lbuf2, SPA_MAXBLOCKSIZE); 6192 6193 if (lsize <= psize) { 6194 (void) printf("Decompress of %s failed\n", thing); 6195 goto out; 6196 } 6197 buf = lbuf; 6198 size = lsize; 6199 } else { 6200 buf = abd_to_buf(pabd); 6201 size = psize; 6202 } 6203 6204 if (flags & ZDB_FLAG_PRINT_BLKPTR) 6205 zdb_print_blkptr((blkptr_t *)(void *) 6206 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 6207 else if (flags & ZDB_FLAG_RAW) 6208 zdb_dump_block_raw(buf, size, flags); 6209 else if (flags & ZDB_FLAG_INDIRECT) 6210 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 6211 flags); 6212 else if (flags & ZDB_FLAG_GBH) 6213 zdb_dump_gbh(buf, flags); 6214 else 6215 zdb_dump_block(thing, buf, size, flags); 6216 6217 out: 6218 abd_free(pabd); 6219 umem_free(lbuf, SPA_MAXBLOCKSIZE); 6220 free(dup); 6221 } 6222 6223 static void 6224 zdb_embedded_block(char *thing) 6225 { 6226 blkptr_t bp; 6227 unsigned long long *words = (void *)&bp; 6228 char *buf; 6229 int err; 6230 6231 bzero(&bp, sizeof (bp)); 6232 err = sscanf(thing, "%llx:%llx:%llx:%llx:%llx:%llx:%llx:%llx:" 6233 "%llx:%llx:%llx:%llx:%llx:%llx:%llx:%llx", 6234 words + 0, words + 1, words + 2, words + 3, 6235 words + 4, words + 5, words + 6, words + 7, 6236 words + 8, words + 9, words + 10, words + 11, 6237 words + 12, words + 13, words + 14, words + 15); 6238 if (err != 16) { 6239 (void) fprintf(stderr, "invalid input format\n"); 6240 exit(1); 6241 } 6242 ASSERT3U(BPE_GET_LSIZE(&bp), <=, SPA_MAXBLOCKSIZE); 6243 buf = malloc(SPA_MAXBLOCKSIZE); 6244 if (buf == NULL) { 6245 (void) fprintf(stderr, "out of memory\n"); 6246 exit(1); 6247 } 6248 err = decode_embedded_bp(&bp, buf, BPE_GET_LSIZE(&bp)); 6249 if (err != 0) { 6250 (void) fprintf(stderr, "decode failed: %u\n", err); 6251 exit(1); 6252 } 6253 zdb_dump_block_raw(buf, BPE_GET_LSIZE(&bp), 0); 6254 free(buf); 6255 } 6256 6257 int 6258 main(int argc, char **argv) 6259 { 6260 int c; 6261 struct rlimit rl = { 1024, 1024 }; 6262 spa_t *spa = NULL; 6263 objset_t *os = NULL; 6264 int dump_all = 1; 6265 int verbose = 0; 6266 int error = 0; 6267 char **searchdirs = NULL; 6268 int nsearch = 0; 6269 char *target, *target_pool; 6270 nvlist_t *policy = NULL; 6271 uint64_t max_txg = UINT64_MAX; 6272 int flags = ZFS_IMPORT_MISSING_LOG; 6273 int rewind = ZPOOL_NEVER_REWIND; 6274 char *spa_config_path_env; 6275 boolean_t target_is_spa = B_TRUE; 6276 nvlist_t *cfg = NULL; 6277 6278 (void) setrlimit(RLIMIT_NOFILE, &rl); 6279 (void) enable_extended_FILE_stdio(-1, -1); 6280 6281 dprintf_setup(&argc, argv); 6282 6283 /* 6284 * If there is an environment variable SPA_CONFIG_PATH it overrides 6285 * default spa_config_path setting. If -U flag is specified it will 6286 * override this environment variable settings once again. 6287 */ 6288 spa_config_path_env = getenv("SPA_CONFIG_PATH"); 6289 if (spa_config_path_env != NULL) 6290 spa_config_path = spa_config_path_env; 6291 6292 /* 6293 * For performance reasons, we set this tunable down. We do so before 6294 * the arg parsing section so that the user can override this value if 6295 * they choose. 6296 */ 6297 zfs_btree_verify_intensity = 3; 6298 6299 while ((c = getopt(argc, argv, 6300 "AbcCdDeEFGhiI:klLmMo:Op:PqRsSt:uU:vVx:X")) != -1) { 6301 switch (c) { 6302 case 'b': 6303 case 'c': 6304 case 'C': 6305 case 'd': 6306 case 'D': 6307 case 'E': 6308 case 'G': 6309 case 'h': 6310 case 'i': 6311 case 'l': 6312 case 'm': 6313 case 'M': 6314 case 'O': 6315 case 'R': 6316 case 's': 6317 case 'S': 6318 case 'u': 6319 dump_opt[c]++; 6320 dump_all = 0; 6321 break; 6322 case 'A': 6323 case 'e': 6324 case 'F': 6325 case 'k': 6326 case 'L': 6327 case 'P': 6328 case 'q': 6329 case 'X': 6330 dump_opt[c]++; 6331 break; 6332 /* NB: Sort single match options below. */ 6333 case 'I': 6334 max_inflight = strtoull(optarg, NULL, 0); 6335 if (max_inflight == 0) { 6336 (void) fprintf(stderr, "maximum number " 6337 "of inflight I/Os must be greater " 6338 "than 0\n"); 6339 usage(); 6340 } 6341 break; 6342 case 'o': 6343 error = set_global_var(optarg); 6344 if (error != 0) 6345 usage(); 6346 break; 6347 case 'p': 6348 if (searchdirs == NULL) { 6349 searchdirs = umem_alloc(sizeof (char *), 6350 UMEM_NOFAIL); 6351 } else { 6352 char **tmp = umem_alloc((nsearch + 1) * 6353 sizeof (char *), UMEM_NOFAIL); 6354 bcopy(searchdirs, tmp, nsearch * 6355 sizeof (char *)); 6356 umem_free(searchdirs, 6357 nsearch * sizeof (char *)); 6358 searchdirs = tmp; 6359 } 6360 searchdirs[nsearch++] = optarg; 6361 break; 6362 case 't': 6363 max_txg = strtoull(optarg, NULL, 0); 6364 if (max_txg < TXG_INITIAL) { 6365 (void) fprintf(stderr, "incorrect txg " 6366 "specified: %s\n", optarg); 6367 usage(); 6368 } 6369 break; 6370 case 'U': 6371 spa_config_path = optarg; 6372 if (spa_config_path[0] != '/') { 6373 (void) fprintf(stderr, 6374 "cachefile must be an absolute path " 6375 "(i.e. start with a slash)\n"); 6376 usage(); 6377 } 6378 break; 6379 case 'v': 6380 verbose++; 6381 break; 6382 case 'V': 6383 flags = ZFS_IMPORT_VERBATIM; 6384 break; 6385 case 'x': 6386 vn_dumpdir = optarg; 6387 break; 6388 default: 6389 usage(); 6390 break; 6391 } 6392 } 6393 6394 if (!dump_opt['e'] && searchdirs != NULL) { 6395 (void) fprintf(stderr, "-p option requires use of -e\n"); 6396 usage(); 6397 } 6398 6399 /* 6400 * ZDB does not typically re-read blocks; therefore limit the ARC 6401 * to 256 MB, which can be used entirely for metadata. 6402 */ 6403 zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024; 6404 6405 /* 6406 * "zdb -c" uses checksum-verifying scrub i/os which are async reads. 6407 * "zdb -b" uses traversal prefetch which uses async reads. 6408 * For good performance, let several of them be active at once. 6409 */ 6410 zfs_vdev_async_read_max_active = 10; 6411 6412 /* 6413 * Disable reference tracking for better performance. 6414 */ 6415 reference_tracking_enable = B_FALSE; 6416 6417 /* 6418 * Do not fail spa_load when spa_load_verify fails. This is needed 6419 * to load non-idle pools. 6420 */ 6421 spa_load_verify_dryrun = B_TRUE; 6422 6423 kernel_init(FREAD); 6424 6425 if (dump_all) 6426 verbose = MAX(verbose, 1); 6427 6428 for (c = 0; c < 256; c++) { 6429 if (dump_all && strchr("AeEFklLOPRSX", c) == NULL) 6430 dump_opt[c] = 1; 6431 if (dump_opt[c]) 6432 dump_opt[c] += verbose; 6433 } 6434 6435 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2); 6436 zfs_recover = (dump_opt['A'] > 1); 6437 6438 argc -= optind; 6439 argv += optind; 6440 6441 if (argc < 2 && dump_opt['R']) 6442 usage(); 6443 6444 if (dump_opt['E']) { 6445 if (argc != 1) 6446 usage(); 6447 zdb_embedded_block(argv[0]); 6448 return (0); 6449 } 6450 6451 if (argc < 1) { 6452 if (!dump_opt['e'] && dump_opt['C']) { 6453 dump_cachefile(spa_config_path); 6454 return (0); 6455 } 6456 usage(); 6457 } 6458 6459 if (dump_opt['l']) 6460 return (dump_label(argv[0])); 6461 6462 if (dump_opt['O']) { 6463 if (argc != 2) 6464 usage(); 6465 dump_opt['v'] = verbose + 3; 6466 return (dump_path(argv[0], argv[1])); 6467 } 6468 6469 if (dump_opt['X'] || dump_opt['F']) 6470 rewind = ZPOOL_DO_REWIND | 6471 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0); 6472 6473 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 || 6474 nvlist_add_uint64(policy, ZPOOL_LOAD_REQUEST_TXG, max_txg) != 0 || 6475 nvlist_add_uint32(policy, ZPOOL_LOAD_REWIND_POLICY, rewind) != 0) 6476 fatal("internal error: %s", strerror(ENOMEM)); 6477 6478 error = 0; 6479 target = argv[0]; 6480 6481 if (strpbrk(target, "/@") != NULL) { 6482 size_t targetlen; 6483 6484 target_pool = strdup(target); 6485 *strpbrk(target_pool, "/@") = '\0'; 6486 6487 target_is_spa = B_FALSE; 6488 targetlen = strlen(target); 6489 if (targetlen && target[targetlen - 1] == '/') 6490 target[targetlen - 1] = '\0'; 6491 } else { 6492 target_pool = target; 6493 } 6494 6495 if (dump_opt['e']) { 6496 importargs_t args = { 0 }; 6497 6498 args.paths = nsearch; 6499 args.path = searchdirs; 6500 args.can_be_active = B_TRUE; 6501 6502 error = zpool_find_config(NULL, target_pool, &cfg, &args, 6503 &libzpool_config_ops); 6504 6505 if (error == 0) { 6506 6507 if (nvlist_add_nvlist(cfg, 6508 ZPOOL_LOAD_POLICY, policy) != 0) { 6509 fatal("can't open '%s': %s", 6510 target, strerror(ENOMEM)); 6511 } 6512 6513 if (dump_opt['C'] > 1) { 6514 (void) printf("\nConfiguration for import:\n"); 6515 dump_nvlist(cfg, 8); 6516 } 6517 6518 /* 6519 * Disable the activity check to allow examination of 6520 * active pools. 6521 */ 6522 error = spa_import(target_pool, cfg, NULL, 6523 flags | ZFS_IMPORT_SKIP_MMP); 6524 } 6525 } 6526 6527 char *checkpoint_pool = NULL; 6528 char *checkpoint_target = NULL; 6529 if (dump_opt['k']) { 6530 checkpoint_pool = import_checkpointed_state(target, cfg, 6531 &checkpoint_target); 6532 6533 if (checkpoint_target != NULL) 6534 target = checkpoint_target; 6535 6536 } 6537 6538 if (error == 0) { 6539 if (dump_opt['k'] && (target_is_spa || dump_opt['R'])) { 6540 ASSERT(checkpoint_pool != NULL); 6541 ASSERT(checkpoint_target == NULL); 6542 6543 error = spa_open(checkpoint_pool, &spa, FTAG); 6544 if (error != 0) { 6545 fatal("Tried to open pool \"%s\" but " 6546 "spa_open() failed with error %d\n", 6547 checkpoint_pool, error); 6548 } 6549 6550 } else if (target_is_spa || dump_opt['R']) { 6551 zdb_set_skip_mmp(target); 6552 error = spa_open_rewind(target, &spa, FTAG, policy, 6553 NULL); 6554 if (error) { 6555 /* 6556 * If we're missing the log device then 6557 * try opening the pool after clearing the 6558 * log state. 6559 */ 6560 mutex_enter(&spa_namespace_lock); 6561 if ((spa = spa_lookup(target)) != NULL && 6562 spa->spa_log_state == SPA_LOG_MISSING) { 6563 spa->spa_log_state = SPA_LOG_CLEAR; 6564 error = 0; 6565 } 6566 mutex_exit(&spa_namespace_lock); 6567 6568 if (!error) { 6569 error = spa_open_rewind(target, &spa, 6570 FTAG, policy, NULL); 6571 } 6572 } 6573 } else { 6574 zdb_set_skip_mmp(target); 6575 error = open_objset(target, DMU_OST_ANY, FTAG, &os); 6576 } 6577 } 6578 nvlist_free(policy); 6579 6580 if (error) 6581 fatal("can't open '%s': %s", target, strerror(error)); 6582 6583 argv++; 6584 argc--; 6585 if (!dump_opt['R']) { 6586 if (argc > 0) { 6587 zopt_objects = argc; 6588 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 6589 for (unsigned i = 0; i < zopt_objects; i++) { 6590 errno = 0; 6591 zopt_object[i] = strtoull(argv[i], NULL, 0); 6592 if (zopt_object[i] == 0 && errno != 0) 6593 fatal("bad number %s: %s", 6594 argv[i], strerror(errno)); 6595 } 6596 } 6597 if (os != NULL) { 6598 dump_dir(os); 6599 } else if (zopt_objects > 0 && !dump_opt['m']) { 6600 dump_dir(spa->spa_meta_objset); 6601 } else { 6602 dump_zpool(spa); 6603 } 6604 } else { 6605 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 6606 flagbits['c'] = ZDB_FLAG_CHECKSUM; 6607 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 6608 flagbits['e'] = ZDB_FLAG_BSWAP; 6609 flagbits['g'] = ZDB_FLAG_GBH; 6610 flagbits['i'] = ZDB_FLAG_INDIRECT; 6611 flagbits['p'] = ZDB_FLAG_PHYS; 6612 flagbits['r'] = ZDB_FLAG_RAW; 6613 6614 for (int i = 0; i < argc; i++) 6615 zdb_read_block(argv[i], spa); 6616 } 6617 6618 if (dump_opt['k']) { 6619 free(checkpoint_pool); 6620 if (!target_is_spa) 6621 free(checkpoint_target); 6622 } 6623 6624 if (os != NULL) 6625 close_objset(os, FTAG); 6626 else 6627 spa_close(spa, FTAG); 6628 6629 fuid_table_destroy(); 6630 6631 dump_debug_buffer(); 6632 6633 kernel_fini(); 6634 6635 return (error); 6636 } 6637