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