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, 2018 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_block_maxsize(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 (ub->ub_mmp_magic == MMP_MAGIC) 2542 (void) printf("\tmmp_delay = %0llu\n", 2543 (u_longlong_t)ub->ub_mmp_delay); 2544 2545 if (dump_opt['u'] >= 3) { 2546 char blkbuf[BP_SPRINTF_LEN]; 2547 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp); 2548 (void) printf("\trootbp = %s\n", blkbuf); 2549 } 2550 (void) printf("\tcheckpoint_txg = %llu\n", 2551 (u_longlong_t)ub->ub_checkpoint_txg); 2552 (void) printf("%s", footer ? footer : ""); 2553 } 2554 2555 static void 2556 dump_config(spa_t *spa) 2557 { 2558 dmu_buf_t *db; 2559 size_t nvsize = 0; 2560 int error = 0; 2561 2562 2563 error = dmu_bonus_hold(spa->spa_meta_objset, 2564 spa->spa_config_object, FTAG, &db); 2565 2566 if (error == 0) { 2567 nvsize = *(uint64_t *)db->db_data; 2568 dmu_buf_rele(db, FTAG); 2569 2570 (void) printf("\nMOS Configuration:\n"); 2571 dump_packed_nvlist(spa->spa_meta_objset, 2572 spa->spa_config_object, (void *)&nvsize, 1); 2573 } else { 2574 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d", 2575 (u_longlong_t)spa->spa_config_object, error); 2576 } 2577 } 2578 2579 static void 2580 dump_cachefile(const char *cachefile) 2581 { 2582 int fd; 2583 struct stat64 statbuf; 2584 char *buf; 2585 nvlist_t *config; 2586 2587 if ((fd = open64(cachefile, O_RDONLY)) < 0) { 2588 (void) printf("cannot open '%s': %s\n", cachefile, 2589 strerror(errno)); 2590 exit(1); 2591 } 2592 2593 if (fstat64(fd, &statbuf) != 0) { 2594 (void) printf("failed to stat '%s': %s\n", cachefile, 2595 strerror(errno)); 2596 exit(1); 2597 } 2598 2599 if ((buf = malloc(statbuf.st_size)) == NULL) { 2600 (void) fprintf(stderr, "failed to allocate %llu bytes\n", 2601 (u_longlong_t)statbuf.st_size); 2602 exit(1); 2603 } 2604 2605 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) { 2606 (void) fprintf(stderr, "failed to read %llu bytes\n", 2607 (u_longlong_t)statbuf.st_size); 2608 exit(1); 2609 } 2610 2611 (void) close(fd); 2612 2613 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) { 2614 (void) fprintf(stderr, "failed to unpack nvlist\n"); 2615 exit(1); 2616 } 2617 2618 free(buf); 2619 2620 dump_nvlist(config, 0); 2621 2622 nvlist_free(config); 2623 } 2624 2625 #define ZDB_MAX_UB_HEADER_SIZE 32 2626 2627 static void 2628 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift) 2629 { 2630 vdev_t vd; 2631 vdev_t *vdp = &vd; 2632 char header[ZDB_MAX_UB_HEADER_SIZE]; 2633 2634 vd.vdev_ashift = ashift; 2635 vdp->vdev_top = vdp; 2636 2637 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) { 2638 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i); 2639 uberblock_t *ub = (void *)((char *)lbl + uoff); 2640 2641 if (uberblock_verify(ub)) 2642 continue; 2643 2644 if ((dump_opt['u'] < 4) && 2645 (ub->ub_mmp_magic == MMP_MAGIC) && ub->ub_mmp_delay && 2646 (i >= VDEV_UBERBLOCK_COUNT(&vd) - MMP_BLOCKS_PER_LABEL)) 2647 continue; 2648 2649 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE, 2650 "Uberblock[%d]\n", i); 2651 dump_uberblock(ub, header, ""); 2652 } 2653 } 2654 2655 static char curpath[PATH_MAX]; 2656 2657 /* 2658 * Iterate through the path components, recursively passing 2659 * current one's obj and remaining path until we find the obj 2660 * for the last one. 2661 */ 2662 static int 2663 dump_path_impl(objset_t *os, uint64_t obj, char *name) 2664 { 2665 int err; 2666 int header = 1; 2667 uint64_t child_obj; 2668 char *s; 2669 dmu_buf_t *db; 2670 dmu_object_info_t doi; 2671 2672 if ((s = strchr(name, '/')) != NULL) 2673 *s = '\0'; 2674 err = zap_lookup(os, obj, name, 8, 1, &child_obj); 2675 2676 (void) strlcat(curpath, name, sizeof (curpath)); 2677 2678 if (err != 0) { 2679 (void) fprintf(stderr, "failed to lookup %s: %s\n", 2680 curpath, strerror(err)); 2681 return (err); 2682 } 2683 2684 child_obj = ZFS_DIRENT_OBJ(child_obj); 2685 err = sa_buf_hold(os, child_obj, FTAG, &db); 2686 if (err != 0) { 2687 (void) fprintf(stderr, 2688 "failed to get SA dbuf for obj %llu: %s\n", 2689 (u_longlong_t)child_obj, strerror(err)); 2690 return (EINVAL); 2691 } 2692 dmu_object_info_from_db(db, &doi); 2693 sa_buf_rele(db, FTAG); 2694 2695 if (doi.doi_bonus_type != DMU_OT_SA && 2696 doi.doi_bonus_type != DMU_OT_ZNODE) { 2697 (void) fprintf(stderr, "invalid bonus type %d for obj %llu\n", 2698 doi.doi_bonus_type, (u_longlong_t)child_obj); 2699 return (EINVAL); 2700 } 2701 2702 if (dump_opt['v'] > 6) { 2703 (void) printf("obj=%llu %s type=%d bonustype=%d\n", 2704 (u_longlong_t)child_obj, curpath, doi.doi_type, 2705 doi.doi_bonus_type); 2706 } 2707 2708 (void) strlcat(curpath, "/", sizeof (curpath)); 2709 2710 switch (doi.doi_type) { 2711 case DMU_OT_DIRECTORY_CONTENTS: 2712 if (s != NULL && *(s + 1) != '\0') 2713 return (dump_path_impl(os, child_obj, s + 1)); 2714 /*FALLTHROUGH*/ 2715 case DMU_OT_PLAIN_FILE_CONTENTS: 2716 dump_object(os, child_obj, dump_opt['v'], &header, NULL); 2717 return (0); 2718 default: 2719 (void) fprintf(stderr, "object %llu has non-file/directory " 2720 "type %d\n", (u_longlong_t)obj, doi.doi_type); 2721 break; 2722 } 2723 2724 return (EINVAL); 2725 } 2726 2727 /* 2728 * Dump the blocks for the object specified by path inside the dataset. 2729 */ 2730 static int 2731 dump_path(char *ds, char *path) 2732 { 2733 int err; 2734 objset_t *os; 2735 uint64_t root_obj; 2736 2737 err = open_objset(ds, DMU_OST_ZFS, FTAG, &os); 2738 if (err != 0) 2739 return (err); 2740 2741 err = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1, &root_obj); 2742 if (err != 0) { 2743 (void) fprintf(stderr, "can't lookup root znode: %s\n", 2744 strerror(err)); 2745 dmu_objset_disown(os, B_FALSE, FTAG); 2746 return (EINVAL); 2747 } 2748 2749 (void) snprintf(curpath, sizeof (curpath), "dataset=%s path=/", ds); 2750 2751 err = dump_path_impl(os, root_obj, path); 2752 2753 close_objset(os, FTAG); 2754 return (err); 2755 } 2756 2757 static int 2758 dump_label(const char *dev) 2759 { 2760 int fd; 2761 vdev_label_t label; 2762 char path[MAXPATHLEN]; 2763 char *buf = label.vl_vdev_phys.vp_nvlist; 2764 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 2765 struct stat64 statbuf; 2766 uint64_t psize, ashift; 2767 boolean_t label_found = B_FALSE; 2768 2769 (void) strlcpy(path, dev, sizeof (path)); 2770 if (dev[0] == '/') { 2771 if (strncmp(dev, ZFS_DISK_ROOTD, 2772 strlen(ZFS_DISK_ROOTD)) == 0) { 2773 (void) snprintf(path, sizeof (path), "%s%s", 2774 ZFS_RDISK_ROOTD, dev + strlen(ZFS_DISK_ROOTD)); 2775 } 2776 } else if (stat64(path, &statbuf) != 0) { 2777 char *s; 2778 2779 (void) snprintf(path, sizeof (path), "%s%s", ZFS_RDISK_ROOTD, 2780 dev); 2781 if (((s = strrchr(dev, 's')) == NULL && 2782 (s = strchr(dev, 'p')) == NULL) || 2783 !isdigit(*(s + 1))) 2784 (void) strlcat(path, "s0", sizeof (path)); 2785 } 2786 2787 if ((fd = open64(path, O_RDONLY)) < 0) { 2788 (void) fprintf(stderr, "cannot open '%s': %s\n", path, 2789 strerror(errno)); 2790 exit(1); 2791 } 2792 2793 if (fstat64(fd, &statbuf) != 0) { 2794 (void) fprintf(stderr, "failed to stat '%s': %s\n", path, 2795 strerror(errno)); 2796 (void) close(fd); 2797 exit(1); 2798 } 2799 2800 if (S_ISBLK(statbuf.st_mode)) { 2801 (void) fprintf(stderr, 2802 "cannot use '%s': character device required\n", path); 2803 (void) close(fd); 2804 exit(1); 2805 } 2806 2807 psize = statbuf.st_size; 2808 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 2809 2810 for (int l = 0; l < VDEV_LABELS; l++) { 2811 nvlist_t *config = NULL; 2812 2813 if (!dump_opt['q']) { 2814 (void) printf("------------------------------------\n"); 2815 (void) printf("LABEL %d\n", l); 2816 (void) printf("------------------------------------\n"); 2817 } 2818 2819 if (pread64(fd, &label, sizeof (label), 2820 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 2821 if (!dump_opt['q']) 2822 (void) printf("failed to read label %d\n", l); 2823 continue; 2824 } 2825 2826 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 2827 if (!dump_opt['q']) 2828 (void) printf("failed to unpack label %d\n", l); 2829 ashift = SPA_MINBLOCKSHIFT; 2830 } else { 2831 nvlist_t *vdev_tree = NULL; 2832 2833 if (!dump_opt['q']) 2834 dump_nvlist(config, 4); 2835 if ((nvlist_lookup_nvlist(config, 2836 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) || 2837 (nvlist_lookup_uint64(vdev_tree, 2838 ZPOOL_CONFIG_ASHIFT, &ashift) != 0)) 2839 ashift = SPA_MINBLOCKSHIFT; 2840 nvlist_free(config); 2841 label_found = B_TRUE; 2842 } 2843 if (dump_opt['u']) 2844 dump_label_uberblocks(&label, ashift); 2845 } 2846 2847 (void) close(fd); 2848 2849 return (label_found ? 0 : 2); 2850 } 2851 2852 static uint64_t dataset_feature_count[SPA_FEATURES]; 2853 static uint64_t remap_deadlist_count = 0; 2854 2855 /*ARGSUSED*/ 2856 static int 2857 dump_one_dir(const char *dsname, void *arg) 2858 { 2859 int error; 2860 objset_t *os; 2861 2862 error = open_objset(dsname, DMU_OST_ANY, FTAG, &os); 2863 if (error != 0) 2864 return (0); 2865 2866 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 2867 if (!dmu_objset_ds(os)->ds_feature_inuse[f]) 2868 continue; 2869 ASSERT(spa_feature_table[f].fi_flags & 2870 ZFEATURE_FLAG_PER_DATASET); 2871 dataset_feature_count[f]++; 2872 } 2873 2874 if (dsl_dataset_remap_deadlist_exists(dmu_objset_ds(os))) { 2875 remap_deadlist_count++; 2876 } 2877 2878 dump_dir(os); 2879 close_objset(os, FTAG); 2880 fuid_table_destroy(); 2881 return (0); 2882 } 2883 2884 /* 2885 * Block statistics. 2886 */ 2887 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2) 2888 typedef struct zdb_blkstats { 2889 uint64_t zb_asize; 2890 uint64_t zb_lsize; 2891 uint64_t zb_psize; 2892 uint64_t zb_count; 2893 uint64_t zb_gangs; 2894 uint64_t zb_ditto_samevdev; 2895 uint64_t zb_ditto_same_ms; 2896 uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE]; 2897 } zdb_blkstats_t; 2898 2899 /* 2900 * Extended object types to report deferred frees and dedup auto-ditto blocks. 2901 */ 2902 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0) 2903 #define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1) 2904 #define ZDB_OT_OTHER (DMU_OT_NUMTYPES + 2) 2905 #define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 3) 2906 2907 static const char *zdb_ot_extname[] = { 2908 "deferred free", 2909 "dedup ditto", 2910 "other", 2911 "Total", 2912 }; 2913 2914 #define ZB_TOTAL DN_MAX_LEVELS 2915 2916 typedef struct zdb_cb { 2917 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1]; 2918 uint64_t zcb_removing_size; 2919 uint64_t zcb_checkpoint_size; 2920 uint64_t zcb_dedup_asize; 2921 uint64_t zcb_dedup_blocks; 2922 uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES]; 2923 uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES] 2924 [BPE_PAYLOAD_SIZE]; 2925 uint64_t zcb_start; 2926 hrtime_t zcb_lastprint; 2927 uint64_t zcb_totalasize; 2928 uint64_t zcb_errors[256]; 2929 int zcb_readfails; 2930 int zcb_haderrors; 2931 spa_t *zcb_spa; 2932 uint32_t **zcb_vd_obsolete_counts; 2933 } zdb_cb_t; 2934 2935 /* test if two DVA offsets from same vdev are within the same metaslab */ 2936 static boolean_t 2937 same_metaslab(spa_t *spa, uint64_t vdev, uint64_t off1, uint64_t off2) 2938 { 2939 vdev_t *vd = vdev_lookup_top(spa, vdev); 2940 uint64_t ms_shift = vd->vdev_ms_shift; 2941 2942 return ((off1 >> ms_shift) == (off2 >> ms_shift)); 2943 } 2944 2945 static void 2946 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp, 2947 dmu_object_type_t type) 2948 { 2949 uint64_t refcnt = 0; 2950 2951 ASSERT(type < ZDB_OT_TOTAL); 2952 2953 if (zilog && zil_bp_tree_add(zilog, bp) != 0) 2954 return; 2955 2956 spa_config_enter(zcb->zcb_spa, SCL_CONFIG, FTAG, RW_READER); 2957 2958 for (int i = 0; i < 4; i++) { 2959 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 2960 int t = (i & 1) ? type : ZDB_OT_TOTAL; 2961 int equal; 2962 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 2963 2964 zb->zb_asize += BP_GET_ASIZE(bp); 2965 zb->zb_lsize += BP_GET_LSIZE(bp); 2966 zb->zb_psize += BP_GET_PSIZE(bp); 2967 zb->zb_count++; 2968 2969 /* 2970 * The histogram is only big enough to record blocks up to 2971 * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last, 2972 * "other", bucket. 2973 */ 2974 unsigned idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT; 2975 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1); 2976 zb->zb_psize_histogram[idx]++; 2977 2978 zb->zb_gangs += BP_COUNT_GANG(bp); 2979 2980 switch (BP_GET_NDVAS(bp)) { 2981 case 2: 2982 if (DVA_GET_VDEV(&bp->blk_dva[0]) == 2983 DVA_GET_VDEV(&bp->blk_dva[1])) { 2984 zb->zb_ditto_samevdev++; 2985 2986 if (same_metaslab(zcb->zcb_spa, 2987 DVA_GET_VDEV(&bp->blk_dva[0]), 2988 DVA_GET_OFFSET(&bp->blk_dva[0]), 2989 DVA_GET_OFFSET(&bp->blk_dva[1]))) 2990 zb->zb_ditto_same_ms++; 2991 } 2992 break; 2993 case 3: 2994 equal = (DVA_GET_VDEV(&bp->blk_dva[0]) == 2995 DVA_GET_VDEV(&bp->blk_dva[1])) + 2996 (DVA_GET_VDEV(&bp->blk_dva[0]) == 2997 DVA_GET_VDEV(&bp->blk_dva[2])) + 2998 (DVA_GET_VDEV(&bp->blk_dva[1]) == 2999 DVA_GET_VDEV(&bp->blk_dva[2])); 3000 if (equal != 0) { 3001 zb->zb_ditto_samevdev++; 3002 3003 if (DVA_GET_VDEV(&bp->blk_dva[0]) == 3004 DVA_GET_VDEV(&bp->blk_dva[1]) && 3005 same_metaslab(zcb->zcb_spa, 3006 DVA_GET_VDEV(&bp->blk_dva[0]), 3007 DVA_GET_OFFSET(&bp->blk_dva[0]), 3008 DVA_GET_OFFSET(&bp->blk_dva[1]))) 3009 zb->zb_ditto_same_ms++; 3010 else if (DVA_GET_VDEV(&bp->blk_dva[0]) == 3011 DVA_GET_VDEV(&bp->blk_dva[2]) && 3012 same_metaslab(zcb->zcb_spa, 3013 DVA_GET_VDEV(&bp->blk_dva[0]), 3014 DVA_GET_OFFSET(&bp->blk_dva[0]), 3015 DVA_GET_OFFSET(&bp->blk_dva[2]))) 3016 zb->zb_ditto_same_ms++; 3017 else if (DVA_GET_VDEV(&bp->blk_dva[1]) == 3018 DVA_GET_VDEV(&bp->blk_dva[2]) && 3019 same_metaslab(zcb->zcb_spa, 3020 DVA_GET_VDEV(&bp->blk_dva[1]), 3021 DVA_GET_OFFSET(&bp->blk_dva[1]), 3022 DVA_GET_OFFSET(&bp->blk_dva[2]))) 3023 zb->zb_ditto_same_ms++; 3024 } 3025 break; 3026 } 3027 } 3028 3029 spa_config_exit(zcb->zcb_spa, SCL_CONFIG, FTAG); 3030 3031 if (BP_IS_EMBEDDED(bp)) { 3032 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++; 3033 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)] 3034 [BPE_GET_PSIZE(bp)]++; 3035 return; 3036 } 3037 3038 if (dump_opt['L']) 3039 return; 3040 3041 if (BP_GET_DEDUP(bp)) { 3042 ddt_t *ddt; 3043 ddt_entry_t *dde; 3044 3045 ddt = ddt_select(zcb->zcb_spa, bp); 3046 ddt_enter(ddt); 3047 dde = ddt_lookup(ddt, bp, B_FALSE); 3048 3049 if (dde == NULL) { 3050 refcnt = 0; 3051 } else { 3052 ddt_phys_t *ddp = ddt_phys_select(dde, bp); 3053 ddt_phys_decref(ddp); 3054 refcnt = ddp->ddp_refcnt; 3055 if (ddt_phys_total_refcnt(dde) == 0) 3056 ddt_remove(ddt, dde); 3057 } 3058 ddt_exit(ddt); 3059 } 3060 3061 VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa, 3062 refcnt ? 0 : spa_min_claim_txg(zcb->zcb_spa), 3063 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0); 3064 } 3065 3066 static void 3067 zdb_blkptr_done(zio_t *zio) 3068 { 3069 spa_t *spa = zio->io_spa; 3070 blkptr_t *bp = zio->io_bp; 3071 int ioerr = zio->io_error; 3072 zdb_cb_t *zcb = zio->io_private; 3073 zbookmark_phys_t *zb = &zio->io_bookmark; 3074 3075 abd_free(zio->io_abd); 3076 3077 mutex_enter(&spa->spa_scrub_lock); 3078 spa->spa_load_verify_ios--; 3079 cv_broadcast(&spa->spa_scrub_io_cv); 3080 3081 if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { 3082 char blkbuf[BP_SPRINTF_LEN]; 3083 3084 zcb->zcb_haderrors = 1; 3085 zcb->zcb_errors[ioerr]++; 3086 3087 if (dump_opt['b'] >= 2) 3088 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3089 else 3090 blkbuf[0] = '\0'; 3091 3092 (void) printf("zdb_blkptr_cb: " 3093 "Got error %d reading " 3094 "<%llu, %llu, %lld, %llx> %s -- skipping\n", 3095 ioerr, 3096 (u_longlong_t)zb->zb_objset, 3097 (u_longlong_t)zb->zb_object, 3098 (u_longlong_t)zb->zb_level, 3099 (u_longlong_t)zb->zb_blkid, 3100 blkbuf); 3101 } 3102 mutex_exit(&spa->spa_scrub_lock); 3103 } 3104 3105 static int 3106 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 3107 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 3108 { 3109 zdb_cb_t *zcb = arg; 3110 dmu_object_type_t type; 3111 boolean_t is_metadata; 3112 3113 if (bp == NULL) 3114 return (0); 3115 3116 if (dump_opt['b'] >= 5 && bp->blk_birth > 0) { 3117 char blkbuf[BP_SPRINTF_LEN]; 3118 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3119 (void) printf("objset %llu object %llu " 3120 "level %lld offset 0x%llx %s\n", 3121 (u_longlong_t)zb->zb_objset, 3122 (u_longlong_t)zb->zb_object, 3123 (longlong_t)zb->zb_level, 3124 (u_longlong_t)blkid2offset(dnp, bp, zb), 3125 blkbuf); 3126 } 3127 3128 if (BP_IS_HOLE(bp)) 3129 return (0); 3130 3131 type = BP_GET_TYPE(bp); 3132 3133 zdb_count_block(zcb, zilog, bp, 3134 (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type); 3135 3136 is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)); 3137 3138 if (!BP_IS_EMBEDDED(bp) && 3139 (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) { 3140 size_t size = BP_GET_PSIZE(bp); 3141 abd_t *abd = abd_alloc(size, B_FALSE); 3142 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW; 3143 3144 /* If it's an intent log block, failure is expected. */ 3145 if (zb->zb_level == ZB_ZIL_LEVEL) 3146 flags |= ZIO_FLAG_SPECULATIVE; 3147 3148 mutex_enter(&spa->spa_scrub_lock); 3149 while (spa->spa_load_verify_ios > max_inflight) 3150 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); 3151 spa->spa_load_verify_ios++; 3152 mutex_exit(&spa->spa_scrub_lock); 3153 3154 zio_nowait(zio_read(NULL, spa, bp, abd, size, 3155 zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb)); 3156 } 3157 3158 zcb->zcb_readfails = 0; 3159 3160 /* only call gethrtime() every 100 blocks */ 3161 static int iters; 3162 if (++iters > 100) 3163 iters = 0; 3164 else 3165 return (0); 3166 3167 if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) { 3168 uint64_t now = gethrtime(); 3169 char buf[10]; 3170 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize; 3171 int kb_per_sec = 3172 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000)); 3173 int sec_remaining = 3174 (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec; 3175 3176 /* make sure nicenum has enough space */ 3177 CTASSERT(sizeof (buf) >= NN_NUMBUF_SZ); 3178 3179 zfs_nicenum(bytes, buf, sizeof (buf)); 3180 (void) fprintf(stderr, 3181 "\r%5s completed (%4dMB/s) " 3182 "estimated time remaining: %uhr %02umin %02usec ", 3183 buf, kb_per_sec / 1024, 3184 sec_remaining / 60 / 60, 3185 sec_remaining / 60 % 60, 3186 sec_remaining % 60); 3187 3188 zcb->zcb_lastprint = now; 3189 } 3190 3191 return (0); 3192 } 3193 3194 static void 3195 zdb_leak(void *arg, uint64_t start, uint64_t size) 3196 { 3197 vdev_t *vd = arg; 3198 3199 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 3200 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size); 3201 } 3202 3203 static metaslab_ops_t zdb_metaslab_ops = { 3204 NULL /* alloc */ 3205 }; 3206 3207 typedef int (*zdb_log_sm_cb_t)(spa_t *spa, space_map_entry_t *sme, 3208 uint64_t txg, void *arg); 3209 3210 typedef struct unflushed_iter_cb_arg { 3211 spa_t *uic_spa; 3212 uint64_t uic_txg; 3213 void *uic_arg; 3214 zdb_log_sm_cb_t uic_cb; 3215 } unflushed_iter_cb_arg_t; 3216 3217 static int 3218 iterate_through_spacemap_logs_cb(space_map_entry_t *sme, void *arg) 3219 { 3220 unflushed_iter_cb_arg_t *uic = arg; 3221 3222 return (uic->uic_cb(uic->uic_spa, sme, uic->uic_txg, uic->uic_arg)); 3223 } 3224 3225 static void 3226 iterate_through_spacemap_logs(spa_t *spa, zdb_log_sm_cb_t cb, void *arg) 3227 { 3228 if (!spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) 3229 return; 3230 3231 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 3232 for (spa_log_sm_t *sls = avl_first(&spa->spa_sm_logs_by_txg); 3233 sls; sls = AVL_NEXT(&spa->spa_sm_logs_by_txg, sls)) { 3234 space_map_t *sm = NULL; 3235 VERIFY0(space_map_open(&sm, spa_meta_objset(spa), 3236 sls->sls_sm_obj, 0, UINT64_MAX, SPA_MINBLOCKSHIFT)); 3237 3238 unflushed_iter_cb_arg_t uic = { 3239 .uic_spa = spa, 3240 .uic_txg = sls->sls_txg, 3241 .uic_arg = arg, 3242 .uic_cb = cb 3243 }; 3244 3245 VERIFY0(space_map_iterate(sm, space_map_length(sm), 3246 iterate_through_spacemap_logs_cb, &uic)); 3247 space_map_close(sm); 3248 } 3249 spa_config_exit(spa, SCL_CONFIG, FTAG); 3250 } 3251 3252 /* ARGSUSED */ 3253 static int 3254 load_unflushed_svr_segs_cb(spa_t *spa, space_map_entry_t *sme, 3255 uint64_t txg, void *arg) 3256 { 3257 spa_vdev_removal_t *svr = arg; 3258 3259 uint64_t offset = sme->sme_offset; 3260 uint64_t size = sme->sme_run; 3261 3262 /* skip vdevs we don't care about */ 3263 if (sme->sme_vdev != svr->svr_vdev_id) 3264 return (0); 3265 3266 vdev_t *vd = vdev_lookup_top(spa, sme->sme_vdev); 3267 metaslab_t *ms = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 3268 ASSERT(sme->sme_type == SM_ALLOC || sme->sme_type == SM_FREE); 3269 3270 if (txg < metaslab_unflushed_txg(ms)) 3271 return (0); 3272 3273 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3274 ASSERT(vim != NULL); 3275 if (offset >= vdev_indirect_mapping_max_offset(vim)) 3276 return (0); 3277 3278 if (sme->sme_type == SM_ALLOC) 3279 range_tree_add(svr->svr_allocd_segs, offset, size); 3280 else 3281 range_tree_remove(svr->svr_allocd_segs, offset, size); 3282 3283 return (0); 3284 } 3285 3286 static void 3287 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb) 3288 { 3289 ddt_bookmark_t ddb; 3290 ddt_entry_t dde; 3291 int error; 3292 3293 ASSERT(!dump_opt['L']); 3294 3295 bzero(&ddb, sizeof (ddb)); 3296 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) { 3297 blkptr_t blk; 3298 ddt_phys_t *ddp = dde.dde_phys; 3299 3300 if (ddb.ddb_class == DDT_CLASS_UNIQUE) 3301 return; 3302 3303 ASSERT(ddt_phys_total_refcnt(&dde) > 1); 3304 3305 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 3306 if (ddp->ddp_phys_birth == 0) 3307 continue; 3308 ddt_bp_create(ddb.ddb_checksum, 3309 &dde.dde_key, ddp, &blk); 3310 if (p == DDT_PHYS_DITTO) { 3311 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO); 3312 } else { 3313 zcb->zcb_dedup_asize += 3314 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1); 3315 zcb->zcb_dedup_blocks++; 3316 } 3317 } 3318 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum]; 3319 ddt_enter(ddt); 3320 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL); 3321 ddt_exit(ddt); 3322 } 3323 3324 ASSERT(error == ENOENT); 3325 } 3326 3327 /* ARGSUSED */ 3328 static void 3329 claim_segment_impl_cb(uint64_t inner_offset, vdev_t *vd, uint64_t offset, 3330 uint64_t size, void *arg) 3331 { 3332 /* 3333 * This callback was called through a remap from 3334 * a device being removed. Therefore, the vdev that 3335 * this callback is applied to is a concrete 3336 * vdev. 3337 */ 3338 ASSERT(vdev_is_concrete(vd)); 3339 3340 VERIFY0(metaslab_claim_impl(vd, offset, size, 3341 spa_min_claim_txg(vd->vdev_spa))); 3342 } 3343 3344 static void 3345 claim_segment_cb(void *arg, uint64_t offset, uint64_t size) 3346 { 3347 vdev_t *vd = arg; 3348 3349 vdev_indirect_ops.vdev_op_remap(vd, offset, size, 3350 claim_segment_impl_cb, NULL); 3351 } 3352 3353 /* 3354 * After accounting for all allocated blocks that are directly referenced, 3355 * we might have missed a reference to a block from a partially complete 3356 * (and thus unused) indirect mapping object. We perform a secondary pass 3357 * through the metaslabs we have already mapped and claim the destination 3358 * blocks. 3359 */ 3360 static void 3361 zdb_claim_removing(spa_t *spa, zdb_cb_t *zcb) 3362 { 3363 if (dump_opt['L']) 3364 return; 3365 3366 if (spa->spa_vdev_removal == NULL) 3367 return; 3368 3369 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 3370 3371 spa_vdev_removal_t *svr = spa->spa_vdev_removal; 3372 vdev_t *vd = vdev_lookup_top(spa, svr->svr_vdev_id); 3373 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3374 3375 ASSERT0(range_tree_space(svr->svr_allocd_segs)); 3376 3377 range_tree_t *allocs = range_tree_create(NULL, NULL); 3378 for (uint64_t msi = 0; msi < vd->vdev_ms_count; msi++) { 3379 metaslab_t *msp = vd->vdev_ms[msi]; 3380 3381 if (msp->ms_start >= vdev_indirect_mapping_max_offset(vim)) 3382 break; 3383 3384 ASSERT0(range_tree_space(allocs)); 3385 if (msp->ms_sm != NULL) 3386 VERIFY0(space_map_load(msp->ms_sm, allocs, SM_ALLOC)); 3387 range_tree_vacate(allocs, range_tree_add, svr->svr_allocd_segs); 3388 } 3389 range_tree_destroy(allocs); 3390 3391 iterate_through_spacemap_logs(spa, load_unflushed_svr_segs_cb, svr); 3392 3393 /* 3394 * Clear everything past what has been synced, 3395 * because we have not allocated mappings for 3396 * it yet. 3397 */ 3398 range_tree_clear(svr->svr_allocd_segs, 3399 vdev_indirect_mapping_max_offset(vim), 3400 vd->vdev_asize - vdev_indirect_mapping_max_offset(vim)); 3401 3402 zcb->zcb_removing_size += range_tree_space(svr->svr_allocd_segs); 3403 range_tree_vacate(svr->svr_allocd_segs, claim_segment_cb, vd); 3404 3405 spa_config_exit(spa, SCL_CONFIG, FTAG); 3406 } 3407 3408 /* ARGSUSED */ 3409 static int 3410 increment_indirect_mapping_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 3411 { 3412 zdb_cb_t *zcb = arg; 3413 spa_t *spa = zcb->zcb_spa; 3414 vdev_t *vd; 3415 const dva_t *dva = &bp->blk_dva[0]; 3416 3417 ASSERT(!dump_opt['L']); 3418 ASSERT3U(BP_GET_NDVAS(bp), ==, 1); 3419 3420 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 3421 vd = vdev_lookup_top(zcb->zcb_spa, DVA_GET_VDEV(dva)); 3422 ASSERT3P(vd, !=, NULL); 3423 spa_config_exit(spa, SCL_VDEV, FTAG); 3424 3425 ASSERT(vd->vdev_indirect_config.vic_mapping_object != 0); 3426 ASSERT3P(zcb->zcb_vd_obsolete_counts[vd->vdev_id], !=, NULL); 3427 3428 vdev_indirect_mapping_increment_obsolete_count( 3429 vd->vdev_indirect_mapping, 3430 DVA_GET_OFFSET(dva), DVA_GET_ASIZE(dva), 3431 zcb->zcb_vd_obsolete_counts[vd->vdev_id]); 3432 3433 return (0); 3434 } 3435 3436 static uint32_t * 3437 zdb_load_obsolete_counts(vdev_t *vd) 3438 { 3439 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3440 spa_t *spa = vd->vdev_spa; 3441 spa_condensing_indirect_phys_t *scip = 3442 &spa->spa_condensing_indirect_phys; 3443 uint32_t *counts; 3444 3445 EQUIV(vdev_obsolete_sm_object(vd) != 0, vd->vdev_obsolete_sm != NULL); 3446 counts = vdev_indirect_mapping_load_obsolete_counts(vim); 3447 if (vd->vdev_obsolete_sm != NULL) { 3448 vdev_indirect_mapping_load_obsolete_spacemap(vim, counts, 3449 vd->vdev_obsolete_sm); 3450 } 3451 if (scip->scip_vdev == vd->vdev_id && 3452 scip->scip_prev_obsolete_sm_object != 0) { 3453 space_map_t *prev_obsolete_sm = NULL; 3454 VERIFY0(space_map_open(&prev_obsolete_sm, spa->spa_meta_objset, 3455 scip->scip_prev_obsolete_sm_object, 0, vd->vdev_asize, 0)); 3456 vdev_indirect_mapping_load_obsolete_spacemap(vim, counts, 3457 prev_obsolete_sm); 3458 space_map_close(prev_obsolete_sm); 3459 } 3460 return (counts); 3461 } 3462 3463 typedef struct checkpoint_sm_exclude_entry_arg { 3464 vdev_t *cseea_vd; 3465 uint64_t cseea_checkpoint_size; 3466 } checkpoint_sm_exclude_entry_arg_t; 3467 3468 static int 3469 checkpoint_sm_exclude_entry_cb(space_map_entry_t *sme, void *arg) 3470 { 3471 checkpoint_sm_exclude_entry_arg_t *cseea = arg; 3472 vdev_t *vd = cseea->cseea_vd; 3473 metaslab_t *ms = vd->vdev_ms[sme->sme_offset >> vd->vdev_ms_shift]; 3474 uint64_t end = sme->sme_offset + sme->sme_run; 3475 3476 ASSERT(sme->sme_type == SM_FREE); 3477 3478 /* 3479 * Since the vdev_checkpoint_sm exists in the vdev level 3480 * and the ms_sm space maps exist in the metaslab level, 3481 * an entry in the checkpoint space map could theoretically 3482 * cross the boundaries of the metaslab that it belongs. 3483 * 3484 * In reality, because of the way that we populate and 3485 * manipulate the checkpoint's space maps currently, 3486 * there shouldn't be any entries that cross metaslabs. 3487 * Hence the assertion below. 3488 * 3489 * That said, there is no fundamental requirement that 3490 * the checkpoint's space map entries should not cross 3491 * metaslab boundaries. So if needed we could add code 3492 * that handles metaslab-crossing segments in the future. 3493 */ 3494 VERIFY3U(sme->sme_offset, >=, ms->ms_start); 3495 VERIFY3U(end, <=, ms->ms_start + ms->ms_size); 3496 3497 /* 3498 * By removing the entry from the allocated segments we 3499 * also verify that the entry is there to begin with. 3500 */ 3501 mutex_enter(&ms->ms_lock); 3502 range_tree_remove(ms->ms_allocatable, sme->sme_offset, sme->sme_run); 3503 mutex_exit(&ms->ms_lock); 3504 3505 cseea->cseea_checkpoint_size += sme->sme_run; 3506 return (0); 3507 } 3508 3509 static void 3510 zdb_leak_init_vdev_exclude_checkpoint(vdev_t *vd, zdb_cb_t *zcb) 3511 { 3512 spa_t *spa = vd->vdev_spa; 3513 space_map_t *checkpoint_sm = NULL; 3514 uint64_t checkpoint_sm_obj; 3515 3516 /* 3517 * If there is no vdev_top_zap, we are in a pool whose 3518 * version predates the pool checkpoint feature. 3519 */ 3520 if (vd->vdev_top_zap == 0) 3521 return; 3522 3523 /* 3524 * If there is no reference of the vdev_checkpoint_sm in 3525 * the vdev_top_zap, then one of the following scenarios 3526 * is true: 3527 * 3528 * 1] There is no checkpoint 3529 * 2] There is a checkpoint, but no checkpointed blocks 3530 * have been freed yet 3531 * 3] The current vdev is indirect 3532 * 3533 * In these cases we return immediately. 3534 */ 3535 if (zap_contains(spa_meta_objset(spa), vd->vdev_top_zap, 3536 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM) != 0) 3537 return; 3538 3539 VERIFY0(zap_lookup(spa_meta_objset(spa), vd->vdev_top_zap, 3540 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, sizeof (uint64_t), 1, 3541 &checkpoint_sm_obj)); 3542 3543 checkpoint_sm_exclude_entry_arg_t cseea; 3544 cseea.cseea_vd = vd; 3545 cseea.cseea_checkpoint_size = 0; 3546 3547 VERIFY0(space_map_open(&checkpoint_sm, spa_meta_objset(spa), 3548 checkpoint_sm_obj, 0, vd->vdev_asize, vd->vdev_ashift)); 3549 3550 VERIFY0(space_map_iterate(checkpoint_sm, 3551 space_map_length(checkpoint_sm), 3552 checkpoint_sm_exclude_entry_cb, &cseea)); 3553 space_map_close(checkpoint_sm); 3554 3555 zcb->zcb_checkpoint_size += cseea.cseea_checkpoint_size; 3556 } 3557 3558 static void 3559 zdb_leak_init_exclude_checkpoint(spa_t *spa, zdb_cb_t *zcb) 3560 { 3561 ASSERT(!dump_opt['L']); 3562 3563 vdev_t *rvd = spa->spa_root_vdev; 3564 for (uint64_t c = 0; c < rvd->vdev_children; c++) { 3565 ASSERT3U(c, ==, rvd->vdev_child[c]->vdev_id); 3566 zdb_leak_init_vdev_exclude_checkpoint(rvd->vdev_child[c], zcb); 3567 } 3568 } 3569 3570 static int 3571 count_unflushed_space_cb(spa_t *spa, space_map_entry_t *sme, 3572 uint64_t txg, void *arg) 3573 { 3574 int64_t *ualloc_space = arg; 3575 uint64_t offset = sme->sme_offset; 3576 uint64_t vdev_id = sme->sme_vdev; 3577 3578 vdev_t *vd = vdev_lookup_top(spa, vdev_id); 3579 if (!vdev_is_concrete(vd)) 3580 return (0); 3581 3582 metaslab_t *ms = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 3583 ASSERT(sme->sme_type == SM_ALLOC || sme->sme_type == SM_FREE); 3584 3585 if (txg < metaslab_unflushed_txg(ms)) 3586 return (0); 3587 3588 if (sme->sme_type == SM_ALLOC) 3589 *ualloc_space += sme->sme_run; 3590 else 3591 *ualloc_space -= sme->sme_run; 3592 3593 return (0); 3594 } 3595 3596 static int64_t 3597 get_unflushed_alloc_space(spa_t *spa) 3598 { 3599 if (dump_opt['L']) 3600 return (0); 3601 3602 int64_t ualloc_space = 0; 3603 iterate_through_spacemap_logs(spa, count_unflushed_space_cb, 3604 &ualloc_space); 3605 return (ualloc_space); 3606 } 3607 3608 static int 3609 load_unflushed_cb(spa_t *spa, space_map_entry_t *sme, uint64_t txg, void *arg) 3610 { 3611 maptype_t *uic_maptype = arg; 3612 uint64_t offset = sme->sme_offset; 3613 uint64_t size = sme->sme_run; 3614 uint64_t vdev_id = sme->sme_vdev; 3615 vdev_t *vd = vdev_lookup_top(spa, vdev_id); 3616 3617 /* skip indirect vdevs */ 3618 if (!vdev_is_concrete(vd)) 3619 return (0); 3620 3621 metaslab_t *ms = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 3622 3623 ASSERT(sme->sme_type == SM_ALLOC || sme->sme_type == SM_FREE); 3624 ASSERT(*uic_maptype == SM_ALLOC || *uic_maptype == SM_FREE); 3625 3626 if (txg < metaslab_unflushed_txg(ms)) 3627 return (0); 3628 3629 if (*uic_maptype == sme->sme_type) 3630 range_tree_add(ms->ms_allocatable, offset, size); 3631 else 3632 range_tree_remove(ms->ms_allocatable, offset, size); 3633 3634 return (0); 3635 } 3636 3637 static void 3638 load_unflushed_to_ms_allocatables(spa_t *spa, maptype_t maptype) 3639 { 3640 iterate_through_spacemap_logs(spa, load_unflushed_cb, &maptype); 3641 } 3642 3643 static void 3644 load_concrete_ms_allocatable_trees(spa_t *spa, maptype_t maptype) 3645 { 3646 vdev_t *rvd = spa->spa_root_vdev; 3647 for (uint64_t i = 0; i < rvd->vdev_children; i++) { 3648 vdev_t *vd = rvd->vdev_child[i]; 3649 3650 ASSERT3U(i, ==, vd->vdev_id); 3651 3652 if (vd->vdev_ops == &vdev_indirect_ops) 3653 continue; 3654 3655 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 3656 metaslab_t *msp = vd->vdev_ms[m]; 3657 3658 (void) fprintf(stderr, 3659 "\rloading concrete vdev %llu, " 3660 "metaslab %llu of %llu ...", 3661 (longlong_t)vd->vdev_id, 3662 (longlong_t)msp->ms_id, 3663 (longlong_t)vd->vdev_ms_count); 3664 3665 mutex_enter(&msp->ms_lock); 3666 range_tree_vacate(msp->ms_allocatable, NULL, NULL); 3667 3668 /* 3669 * We don't want to spend the CPU manipulating the 3670 * size-ordered tree, so clear the range_tree ops. 3671 */ 3672 msp->ms_allocatable->rt_ops = NULL; 3673 3674 if (msp->ms_sm != NULL) { 3675 VERIFY0(space_map_load(msp->ms_sm, 3676 msp->ms_allocatable, maptype)); 3677 } 3678 if (!msp->ms_loaded) 3679 msp->ms_loaded = B_TRUE; 3680 mutex_exit(&msp->ms_lock); 3681 } 3682 } 3683 3684 load_unflushed_to_ms_allocatables(spa, maptype); 3685 } 3686 3687 /* 3688 * vm_idxp is an in-out parameter which (for indirect vdevs) is the 3689 * index in vim_entries that has the first entry in this metaslab. 3690 * On return, it will be set to the first entry after this metaslab. 3691 */ 3692 static void 3693 load_indirect_ms_allocatable_tree(vdev_t *vd, metaslab_t *msp, 3694 uint64_t *vim_idxp) 3695 { 3696 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3697 3698 mutex_enter(&msp->ms_lock); 3699 range_tree_vacate(msp->ms_allocatable, NULL, NULL); 3700 3701 /* 3702 * We don't want to spend the CPU manipulating the 3703 * size-ordered tree, so clear the range_tree ops. 3704 */ 3705 msp->ms_allocatable->rt_ops = NULL; 3706 3707 for (; *vim_idxp < vdev_indirect_mapping_num_entries(vim); 3708 (*vim_idxp)++) { 3709 vdev_indirect_mapping_entry_phys_t *vimep = 3710 &vim->vim_entries[*vim_idxp]; 3711 uint64_t ent_offset = DVA_MAPPING_GET_SRC_OFFSET(vimep); 3712 uint64_t ent_len = DVA_GET_ASIZE(&vimep->vimep_dst); 3713 ASSERT3U(ent_offset, >=, msp->ms_start); 3714 if (ent_offset >= msp->ms_start + msp->ms_size) 3715 break; 3716 3717 /* 3718 * Mappings do not cross metaslab boundaries, 3719 * because we create them by walking the metaslabs. 3720 */ 3721 ASSERT3U(ent_offset + ent_len, <=, 3722 msp->ms_start + msp->ms_size); 3723 range_tree_add(msp->ms_allocatable, ent_offset, ent_len); 3724 } 3725 3726 if (!msp->ms_loaded) 3727 msp->ms_loaded = B_TRUE; 3728 mutex_exit(&msp->ms_lock); 3729 } 3730 3731 static void 3732 zdb_leak_init_prepare_indirect_vdevs(spa_t *spa, zdb_cb_t *zcb) 3733 { 3734 ASSERT(!dump_opt['L']); 3735 3736 vdev_t *rvd = spa->spa_root_vdev; 3737 for (uint64_t c = 0; c < rvd->vdev_children; c++) { 3738 vdev_t *vd = rvd->vdev_child[c]; 3739 3740 ASSERT3U(c, ==, vd->vdev_id); 3741 3742 if (vd->vdev_ops != &vdev_indirect_ops) 3743 continue; 3744 3745 /* 3746 * Note: we don't check for mapping leaks on 3747 * removing vdevs because their ms_allocatable's 3748 * are used to look for leaks in allocated space. 3749 */ 3750 zcb->zcb_vd_obsolete_counts[c] = zdb_load_obsolete_counts(vd); 3751 3752 /* 3753 * Normally, indirect vdevs don't have any 3754 * metaslabs. We want to set them up for 3755 * zio_claim(). 3756 */ 3757 VERIFY0(vdev_metaslab_init(vd, 0)); 3758 3759 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3760 uint64_t vim_idx = 0; 3761 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 3762 3763 (void) fprintf(stderr, 3764 "\rloading indirect vdev %llu, " 3765 "metaslab %llu of %llu ...", 3766 (longlong_t)vd->vdev_id, 3767 (longlong_t)vd->vdev_ms[m]->ms_id, 3768 (longlong_t)vd->vdev_ms_count); 3769 3770 load_indirect_ms_allocatable_tree(vd, vd->vdev_ms[m], 3771 &vim_idx); 3772 } 3773 ASSERT3U(vim_idx, ==, vdev_indirect_mapping_num_entries(vim)); 3774 } 3775 } 3776 3777 static void 3778 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb) 3779 { 3780 zcb->zcb_spa = spa; 3781 3782 if (dump_opt['L']) 3783 return; 3784 3785 dsl_pool_t *dp = spa->spa_dsl_pool; 3786 vdev_t *rvd = spa->spa_root_vdev; 3787 3788 /* 3789 * We are going to be changing the meaning of the metaslab's 3790 * ms_allocatable. Ensure that the allocator doesn't try to 3791 * use the tree. 3792 */ 3793 spa->spa_normal_class->mc_ops = &zdb_metaslab_ops; 3794 spa->spa_log_class->mc_ops = &zdb_metaslab_ops; 3795 3796 zcb->zcb_vd_obsolete_counts = 3797 umem_zalloc(rvd->vdev_children * sizeof (uint32_t *), 3798 UMEM_NOFAIL); 3799 3800 /* 3801 * For leak detection, we overload the ms_allocatable trees 3802 * to contain allocated segments instead of free segments. 3803 * As a result, we can't use the normal metaslab_load/unload 3804 * interfaces. 3805 */ 3806 zdb_leak_init_prepare_indirect_vdevs(spa, zcb); 3807 load_concrete_ms_allocatable_trees(spa, SM_ALLOC); 3808 3809 /* 3810 * On load_concrete_ms_allocatable_trees() we loaded all the 3811 * allocated entries from the ms_sm to the ms_allocatable for 3812 * each metaslab. If the pool has a checkpoint or is in the 3813 * middle of discarding a checkpoint, some of these blocks 3814 * may have been freed but their ms_sm may not have been 3815 * updated because they are referenced by the checkpoint. In 3816 * order to avoid false-positives during leak-detection, we 3817 * go through the vdev's checkpoint space map and exclude all 3818 * its entries from their relevant ms_allocatable. 3819 * 3820 * We also aggregate the space held by the checkpoint and add 3821 * it to zcb_checkpoint_size. 3822 * 3823 * Note that at this point we are also verifying that all the 3824 * entries on the checkpoint_sm are marked as allocated in 3825 * the ms_sm of their relevant metaslab. 3826 * [see comment in checkpoint_sm_exclude_entry_cb()] 3827 */ 3828 zdb_leak_init_exclude_checkpoint(spa, zcb); 3829 ASSERT3U(zcb->zcb_checkpoint_size, ==, spa_get_checkpoint_space(spa)); 3830 3831 /* for cleaner progress output */ 3832 (void) fprintf(stderr, "\n"); 3833 3834 if (bpobj_is_open(&dp->dp_obsolete_bpobj)) { 3835 ASSERT(spa_feature_is_enabled(spa, 3836 SPA_FEATURE_DEVICE_REMOVAL)); 3837 (void) bpobj_iterate_nofree(&dp->dp_obsolete_bpobj, 3838 increment_indirect_mapping_cb, zcb, NULL); 3839 } 3840 3841 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 3842 zdb_ddt_leak_init(spa, zcb); 3843 spa_config_exit(spa, SCL_CONFIG, FTAG); 3844 } 3845 3846 static boolean_t 3847 zdb_check_for_obsolete_leaks(vdev_t *vd, zdb_cb_t *zcb) 3848 { 3849 boolean_t leaks = B_FALSE; 3850 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 3851 uint64_t total_leaked = 0; 3852 3853 ASSERT(vim != NULL); 3854 3855 for (uint64_t i = 0; i < vdev_indirect_mapping_num_entries(vim); i++) { 3856 vdev_indirect_mapping_entry_phys_t *vimep = 3857 &vim->vim_entries[i]; 3858 uint64_t obsolete_bytes = 0; 3859 uint64_t offset = DVA_MAPPING_GET_SRC_OFFSET(vimep); 3860 metaslab_t *msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 3861 3862 /* 3863 * This is not very efficient but it's easy to 3864 * verify correctness. 3865 */ 3866 for (uint64_t inner_offset = 0; 3867 inner_offset < DVA_GET_ASIZE(&vimep->vimep_dst); 3868 inner_offset += 1 << vd->vdev_ashift) { 3869 if (range_tree_contains(msp->ms_allocatable, 3870 offset + inner_offset, 1 << vd->vdev_ashift)) { 3871 obsolete_bytes += 1 << vd->vdev_ashift; 3872 } 3873 } 3874 3875 int64_t bytes_leaked = obsolete_bytes - 3876 zcb->zcb_vd_obsolete_counts[vd->vdev_id][i]; 3877 ASSERT3U(DVA_GET_ASIZE(&vimep->vimep_dst), >=, 3878 zcb->zcb_vd_obsolete_counts[vd->vdev_id][i]); 3879 if (bytes_leaked != 0 && 3880 (vdev_obsolete_counts_are_precise(vd) || 3881 dump_opt['d'] >= 5)) { 3882 (void) printf("obsolete indirect mapping count " 3883 "mismatch on %llu:%llx:%llx : %llx bytes leaked\n", 3884 (u_longlong_t)vd->vdev_id, 3885 (u_longlong_t)DVA_MAPPING_GET_SRC_OFFSET(vimep), 3886 (u_longlong_t)DVA_GET_ASIZE(&vimep->vimep_dst), 3887 (u_longlong_t)bytes_leaked); 3888 } 3889 total_leaked += ABS(bytes_leaked); 3890 } 3891 3892 if (!vdev_obsolete_counts_are_precise(vd) && total_leaked > 0) { 3893 int pct_leaked = total_leaked * 100 / 3894 vdev_indirect_mapping_bytes_mapped(vim); 3895 (void) printf("cannot verify obsolete indirect mapping " 3896 "counts of vdev %llu because precise feature was not " 3897 "enabled when it was removed: %d%% (%llx bytes) of mapping" 3898 "unreferenced\n", 3899 (u_longlong_t)vd->vdev_id, pct_leaked, 3900 (u_longlong_t)total_leaked); 3901 } else if (total_leaked > 0) { 3902 (void) printf("obsolete indirect mapping count mismatch " 3903 "for vdev %llu -- %llx total bytes mismatched\n", 3904 (u_longlong_t)vd->vdev_id, 3905 (u_longlong_t)total_leaked); 3906 leaks |= B_TRUE; 3907 } 3908 3909 vdev_indirect_mapping_free_obsolete_counts(vim, 3910 zcb->zcb_vd_obsolete_counts[vd->vdev_id]); 3911 zcb->zcb_vd_obsolete_counts[vd->vdev_id] = NULL; 3912 3913 return (leaks); 3914 } 3915 3916 static boolean_t 3917 zdb_leak_fini(spa_t *spa, zdb_cb_t *zcb) 3918 { 3919 if (dump_opt['L']) 3920 return (B_FALSE); 3921 3922 boolean_t leaks = B_FALSE; 3923 3924 vdev_t *rvd = spa->spa_root_vdev; 3925 for (unsigned c = 0; c < rvd->vdev_children; c++) { 3926 vdev_t *vd = rvd->vdev_child[c]; 3927 #if DEBUG 3928 metaslab_group_t *mg = vd->vdev_mg; 3929 #endif 3930 3931 if (zcb->zcb_vd_obsolete_counts[c] != NULL) { 3932 leaks |= zdb_check_for_obsolete_leaks(vd, zcb); 3933 } 3934 3935 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 3936 metaslab_t *msp = vd->vdev_ms[m]; 3937 ASSERT3P(mg, ==, msp->ms_group); 3938 3939 /* 3940 * ms_allocatable has been overloaded 3941 * to contain allocated segments. Now that 3942 * we finished traversing all blocks, any 3943 * block that remains in the ms_allocatable 3944 * represents an allocated block that we 3945 * did not claim during the traversal. 3946 * Claimed blocks would have been removed 3947 * from the ms_allocatable. For indirect 3948 * vdevs, space remaining in the tree 3949 * represents parts of the mapping that are 3950 * not referenced, which is not a bug. 3951 */ 3952 if (vd->vdev_ops == &vdev_indirect_ops) { 3953 range_tree_vacate(msp->ms_allocatable, 3954 NULL, NULL); 3955 } else { 3956 range_tree_vacate(msp->ms_allocatable, 3957 zdb_leak, vd); 3958 } 3959 if (msp->ms_loaded) { 3960 msp->ms_loaded = B_FALSE; 3961 } 3962 } 3963 3964 } 3965 3966 umem_free(zcb->zcb_vd_obsolete_counts, 3967 rvd->vdev_children * sizeof (uint32_t *)); 3968 zcb->zcb_vd_obsolete_counts = NULL; 3969 3970 return (leaks); 3971 } 3972 3973 /* ARGSUSED */ 3974 static int 3975 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 3976 { 3977 zdb_cb_t *zcb = arg; 3978 3979 if (dump_opt['b'] >= 5) { 3980 char blkbuf[BP_SPRINTF_LEN]; 3981 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3982 (void) printf("[%s] %s\n", 3983 "deferred free", blkbuf); 3984 } 3985 zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED); 3986 return (0); 3987 } 3988 3989 static int 3990 dump_block_stats(spa_t *spa) 3991 { 3992 zdb_cb_t zcb; 3993 zdb_blkstats_t *zb, *tzb; 3994 uint64_t norm_alloc, norm_space, total_alloc, total_found; 3995 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | 3996 TRAVERSE_NO_DECRYPT | TRAVERSE_HARD; 3997 boolean_t leaks = B_FALSE; 3998 int err; 3999 4000 bzero(&zcb, sizeof (zcb)); 4001 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n", 4002 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "", 4003 (dump_opt['c'] == 1) ? "metadata " : "", 4004 dump_opt['c'] ? "checksums " : "", 4005 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "", 4006 !dump_opt['L'] ? "nothing leaked " : ""); 4007 4008 /* 4009 * When leak detection is enabled we load all space maps as SM_ALLOC 4010 * maps, then traverse the pool claiming each block we discover. If 4011 * the pool is perfectly consistent, the segment trees will be empty 4012 * when we're done. Anything left over is a leak; any block we can't 4013 * claim (because it's not part of any space map) is a double 4014 * allocation, reference to a freed block, or an unclaimed log block. 4015 * 4016 * When leak detection is disabled (-L option) we still traverse the 4017 * pool claiming each block we discover, but we skip opening any space 4018 * maps. 4019 */ 4020 bzero(&zcb, sizeof (zdb_cb_t)); 4021 zdb_leak_init(spa, &zcb); 4022 4023 /* 4024 * If there's a deferred-free bplist, process that first. 4025 */ 4026 (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj, 4027 count_block_cb, &zcb, NULL); 4028 4029 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 4030 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj, 4031 count_block_cb, &zcb, NULL); 4032 } 4033 4034 zdb_claim_removing(spa, &zcb); 4035 4036 if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) { 4037 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset, 4038 spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb, 4039 &zcb, NULL)); 4040 } 4041 4042 if (dump_opt['c'] > 1) 4043 flags |= TRAVERSE_PREFETCH_DATA; 4044 4045 zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa)); 4046 zcb.zcb_totalasize += metaslab_class_get_alloc(spa_special_class(spa)); 4047 zcb.zcb_totalasize += metaslab_class_get_alloc(spa_dedup_class(spa)); 4048 zcb.zcb_start = zcb.zcb_lastprint = gethrtime(); 4049 err = traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb); 4050 4051 /* 4052 * If we've traversed the data blocks then we need to wait for those 4053 * I/Os to complete. We leverage "The Godfather" zio to wait on 4054 * all async I/Os to complete. 4055 */ 4056 if (dump_opt['c']) { 4057 for (int i = 0; i < max_ncpus; i++) { 4058 (void) zio_wait(spa->spa_async_zio_root[i]); 4059 spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, 4060 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | 4061 ZIO_FLAG_GODFATHER); 4062 } 4063 } 4064 4065 /* 4066 * Done after zio_wait() since zcb_haderrors is modified in 4067 * zdb_blkptr_done() 4068 */ 4069 zcb.zcb_haderrors |= err; 4070 4071 if (zcb.zcb_haderrors) { 4072 (void) printf("\nError counts:\n\n"); 4073 (void) printf("\t%5s %s\n", "errno", "count"); 4074 for (int e = 0; e < 256; e++) { 4075 if (zcb.zcb_errors[e] != 0) { 4076 (void) printf("\t%5d %llu\n", 4077 e, (u_longlong_t)zcb.zcb_errors[e]); 4078 } 4079 } 4080 } 4081 4082 /* 4083 * Report any leaked segments. 4084 */ 4085 leaks |= zdb_leak_fini(spa, &zcb); 4086 4087 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL]; 4088 4089 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 4090 norm_space = metaslab_class_get_space(spa_normal_class(spa)); 4091 4092 total_alloc = norm_alloc + 4093 metaslab_class_get_alloc(spa_log_class(spa)) + 4094 metaslab_class_get_alloc(spa_special_class(spa)) + 4095 metaslab_class_get_alloc(spa_dedup_class(spa)) + 4096 get_unflushed_alloc_space(spa); 4097 total_found = tzb->zb_asize - zcb.zcb_dedup_asize + 4098 zcb.zcb_removing_size + zcb.zcb_checkpoint_size; 4099 4100 if (total_found == total_alloc && !dump_opt['L']) { 4101 (void) printf("\n\tNo leaks (block sum matches space" 4102 " maps exactly)\n"); 4103 } else if (!dump_opt['L']) { 4104 (void) printf("block traversal size %llu != alloc %llu " 4105 "(%s %lld)\n", 4106 (u_longlong_t)total_found, 4107 (u_longlong_t)total_alloc, 4108 (dump_opt['L']) ? "unreachable" : "leaked", 4109 (longlong_t)(total_alloc - total_found)); 4110 leaks = B_TRUE; 4111 } 4112 4113 if (tzb->zb_count == 0) 4114 return (2); 4115 4116 (void) printf("\n"); 4117 (void) printf("\t%-16s %14llu\n", "bp count:", 4118 (u_longlong_t)tzb->zb_count); 4119 (void) printf("\t%-16s %14llu\n", "ganged count:", 4120 (longlong_t)tzb->zb_gangs); 4121 (void) printf("\t%-16s %14llu avg: %6llu\n", "bp logical:", 4122 (u_longlong_t)tzb->zb_lsize, 4123 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 4124 (void) printf("\t%-16s %14llu avg: %6llu compression: %6.2f\n", 4125 "bp physical:", (u_longlong_t)tzb->zb_psize, 4126 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 4127 (double)tzb->zb_lsize / tzb->zb_psize); 4128 (void) printf("\t%-16s %14llu avg: %6llu compression: %6.2f\n", 4129 "bp allocated:", (u_longlong_t)tzb->zb_asize, 4130 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 4131 (double)tzb->zb_lsize / tzb->zb_asize); 4132 (void) printf("\t%-16s %14llu ref>1: %6llu deduplication: %6.2f\n", 4133 "bp deduped:", (u_longlong_t)zcb.zcb_dedup_asize, 4134 (u_longlong_t)zcb.zcb_dedup_blocks, 4135 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0); 4136 (void) printf("\t%-16s %14llu used: %5.2f%%\n", "Normal class:", 4137 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space); 4138 4139 if (spa_special_class(spa)->mc_rotor != NULL) { 4140 uint64_t alloc = metaslab_class_get_alloc( 4141 spa_special_class(spa)); 4142 uint64_t space = metaslab_class_get_space( 4143 spa_special_class(spa)); 4144 4145 (void) printf("\t%-16s %14llu used: %5.2f%%\n", 4146 "Special class", (u_longlong_t)alloc, 4147 100.0 * alloc / space); 4148 } 4149 4150 if (spa_dedup_class(spa)->mc_rotor != NULL) { 4151 uint64_t alloc = metaslab_class_get_alloc( 4152 spa_dedup_class(spa)); 4153 uint64_t space = metaslab_class_get_space( 4154 spa_dedup_class(spa)); 4155 4156 (void) printf("\t%-16s %14llu used: %5.2f%%\n", 4157 "Dedup class", (u_longlong_t)alloc, 4158 100.0 * alloc / space); 4159 } 4160 4161 for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) { 4162 if (zcb.zcb_embedded_blocks[i] == 0) 4163 continue; 4164 (void) printf("\n"); 4165 (void) printf("\tadditional, non-pointer bps of type %u: " 4166 "%10llu\n", 4167 i, (u_longlong_t)zcb.zcb_embedded_blocks[i]); 4168 4169 if (dump_opt['b'] >= 3) { 4170 (void) printf("\t number of (compressed) bytes: " 4171 "number of bps\n"); 4172 dump_histogram(zcb.zcb_embedded_histogram[i], 4173 sizeof (zcb.zcb_embedded_histogram[i]) / 4174 sizeof (zcb.zcb_embedded_histogram[i][0]), 0); 4175 } 4176 } 4177 4178 if (tzb->zb_ditto_samevdev != 0) { 4179 (void) printf("\tDittoed blocks on same vdev: %llu\n", 4180 (longlong_t)tzb->zb_ditto_samevdev); 4181 } 4182 if (tzb->zb_ditto_same_ms != 0) { 4183 (void) printf("\tDittoed blocks in same metaslab: %llu\n", 4184 (longlong_t)tzb->zb_ditto_same_ms); 4185 } 4186 4187 for (uint64_t v = 0; v < spa->spa_root_vdev->vdev_children; v++) { 4188 vdev_t *vd = spa->spa_root_vdev->vdev_child[v]; 4189 vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping; 4190 4191 if (vim == NULL) { 4192 continue; 4193 } 4194 4195 char mem[32]; 4196 zdb_nicenum(vdev_indirect_mapping_num_entries(vim), 4197 mem, vdev_indirect_mapping_size(vim)); 4198 4199 (void) printf("\tindirect vdev id %llu has %llu segments " 4200 "(%s in memory)\n", 4201 (longlong_t)vd->vdev_id, 4202 (longlong_t)vdev_indirect_mapping_num_entries(vim), mem); 4203 } 4204 4205 if (dump_opt['b'] >= 2) { 4206 int l, t, level; 4207 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 4208 "\t avg\t comp\t%%Total\tType\n"); 4209 4210 for (t = 0; t <= ZDB_OT_TOTAL; t++) { 4211 char csize[32], lsize[32], psize[32], asize[32]; 4212 char avg[32], gang[32]; 4213 const char *typename; 4214 4215 /* make sure nicenum has enough space */ 4216 CTASSERT(sizeof (csize) >= NN_NUMBUF_SZ); 4217 CTASSERT(sizeof (lsize) >= NN_NUMBUF_SZ); 4218 CTASSERT(sizeof (psize) >= NN_NUMBUF_SZ); 4219 CTASSERT(sizeof (asize) >= NN_NUMBUF_SZ); 4220 CTASSERT(sizeof (avg) >= NN_NUMBUF_SZ); 4221 CTASSERT(sizeof (gang) >= NN_NUMBUF_SZ); 4222 4223 if (t < DMU_OT_NUMTYPES) 4224 typename = dmu_ot[t].ot_name; 4225 else 4226 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES]; 4227 4228 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 4229 (void) printf("%6s\t%5s\t%5s\t%5s" 4230 "\t%5s\t%5s\t%6s\t%s\n", 4231 "-", 4232 "-", 4233 "-", 4234 "-", 4235 "-", 4236 "-", 4237 "-", 4238 typename); 4239 continue; 4240 } 4241 4242 for (l = ZB_TOTAL - 1; l >= -1; l--) { 4243 level = (l == -1 ? ZB_TOTAL : l); 4244 zb = &zcb.zcb_type[level][t]; 4245 4246 if (zb->zb_asize == 0) 4247 continue; 4248 4249 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 4250 continue; 4251 4252 if (level == 0 && zb->zb_asize == 4253 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 4254 continue; 4255 4256 zdb_nicenum(zb->zb_count, csize, 4257 sizeof (csize)); 4258 zdb_nicenum(zb->zb_lsize, lsize, 4259 sizeof (lsize)); 4260 zdb_nicenum(zb->zb_psize, psize, 4261 sizeof (psize)); 4262 zdb_nicenum(zb->zb_asize, asize, 4263 sizeof (asize)); 4264 zdb_nicenum(zb->zb_asize / zb->zb_count, avg, 4265 sizeof (avg)); 4266 zdb_nicenum(zb->zb_gangs, gang, sizeof (gang)); 4267 4268 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 4269 "\t%5.2f\t%6.2f\t", 4270 csize, lsize, psize, asize, avg, 4271 (double)zb->zb_lsize / zb->zb_psize, 4272 100.0 * zb->zb_asize / tzb->zb_asize); 4273 4274 if (level == ZB_TOTAL) 4275 (void) printf("%s\n", typename); 4276 else 4277 (void) printf(" L%d %s\n", 4278 level, typename); 4279 4280 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) { 4281 (void) printf("\t number of ganged " 4282 "blocks: %s\n", gang); 4283 } 4284 4285 if (dump_opt['b'] >= 4) { 4286 (void) printf("psize " 4287 "(in 512-byte sectors): " 4288 "number of blocks\n"); 4289 dump_histogram(zb->zb_psize_histogram, 4290 PSIZE_HISTO_SIZE, 0); 4291 } 4292 } 4293 } 4294 } 4295 4296 (void) printf("\n"); 4297 4298 if (leaks) 4299 return (2); 4300 4301 if (zcb.zcb_haderrors) 4302 return (3); 4303 4304 return (0); 4305 } 4306 4307 typedef struct zdb_ddt_entry { 4308 ddt_key_t zdde_key; 4309 uint64_t zdde_ref_blocks; 4310 uint64_t zdde_ref_lsize; 4311 uint64_t zdde_ref_psize; 4312 uint64_t zdde_ref_dsize; 4313 avl_node_t zdde_node; 4314 } zdb_ddt_entry_t; 4315 4316 /* ARGSUSED */ 4317 static int 4318 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 4319 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 4320 { 4321 avl_tree_t *t = arg; 4322 avl_index_t where; 4323 zdb_ddt_entry_t *zdde, zdde_search; 4324 4325 if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp)) 4326 return (0); 4327 4328 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) { 4329 (void) printf("traversing objset %llu, %llu objects, " 4330 "%lu blocks so far\n", 4331 (u_longlong_t)zb->zb_objset, 4332 (u_longlong_t)BP_GET_FILL(bp), 4333 avl_numnodes(t)); 4334 } 4335 4336 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF || 4337 BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) 4338 return (0); 4339 4340 ddt_key_fill(&zdde_search.zdde_key, bp); 4341 4342 zdde = avl_find(t, &zdde_search, &where); 4343 4344 if (zdde == NULL) { 4345 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL); 4346 zdde->zdde_key = zdde_search.zdde_key; 4347 avl_insert(t, zdde, where); 4348 } 4349 4350 zdde->zdde_ref_blocks += 1; 4351 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp); 4352 zdde->zdde_ref_psize += BP_GET_PSIZE(bp); 4353 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp); 4354 4355 return (0); 4356 } 4357 4358 static void 4359 dump_simulated_ddt(spa_t *spa) 4360 { 4361 avl_tree_t t; 4362 void *cookie = NULL; 4363 zdb_ddt_entry_t *zdde; 4364 ddt_histogram_t ddh_total; 4365 ddt_stat_t dds_total; 4366 4367 bzero(&ddh_total, sizeof (ddh_total)); 4368 bzero(&dds_total, sizeof (dds_total)); 4369 avl_create(&t, ddt_entry_compare, 4370 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node)); 4371 4372 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 4373 4374 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | 4375 TRAVERSE_NO_DECRYPT, zdb_ddt_add_cb, &t); 4376 4377 spa_config_exit(spa, SCL_CONFIG, FTAG); 4378 4379 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) { 4380 ddt_stat_t dds; 4381 uint64_t refcnt = zdde->zdde_ref_blocks; 4382 ASSERT(refcnt != 0); 4383 4384 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt; 4385 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt; 4386 dds.dds_psize = zdde->zdde_ref_psize / refcnt; 4387 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt; 4388 4389 dds.dds_ref_blocks = zdde->zdde_ref_blocks; 4390 dds.dds_ref_lsize = zdde->zdde_ref_lsize; 4391 dds.dds_ref_psize = zdde->zdde_ref_psize; 4392 dds.dds_ref_dsize = zdde->zdde_ref_dsize; 4393 4394 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1], 4395 &dds, 0); 4396 4397 umem_free(zdde, sizeof (*zdde)); 4398 } 4399 4400 avl_destroy(&t); 4401 4402 ddt_histogram_stat(&dds_total, &ddh_total); 4403 4404 (void) printf("Simulated DDT histogram:\n"); 4405 4406 zpool_dump_ddt(&dds_total, &ddh_total); 4407 4408 dump_dedup_ratio(&dds_total); 4409 } 4410 4411 static int 4412 verify_device_removal_feature_counts(spa_t *spa) 4413 { 4414 uint64_t dr_feature_refcount = 0; 4415 uint64_t oc_feature_refcount = 0; 4416 uint64_t indirect_vdev_count = 0; 4417 uint64_t precise_vdev_count = 0; 4418 uint64_t obsolete_counts_object_count = 0; 4419 uint64_t obsolete_sm_count = 0; 4420 uint64_t obsolete_counts_count = 0; 4421 uint64_t scip_count = 0; 4422 uint64_t obsolete_bpobj_count = 0; 4423 int ret = 0; 4424 4425 spa_condensing_indirect_phys_t *scip = 4426 &spa->spa_condensing_indirect_phys; 4427 if (scip->scip_next_mapping_object != 0) { 4428 vdev_t *vd = spa->spa_root_vdev->vdev_child[scip->scip_vdev]; 4429 ASSERT(scip->scip_prev_obsolete_sm_object != 0); 4430 ASSERT3P(vd->vdev_ops, ==, &vdev_indirect_ops); 4431 4432 (void) printf("Condensing indirect vdev %llu: new mapping " 4433 "object %llu, prev obsolete sm %llu\n", 4434 (u_longlong_t)scip->scip_vdev, 4435 (u_longlong_t)scip->scip_next_mapping_object, 4436 (u_longlong_t)scip->scip_prev_obsolete_sm_object); 4437 if (scip->scip_prev_obsolete_sm_object != 0) { 4438 space_map_t *prev_obsolete_sm = NULL; 4439 VERIFY0(space_map_open(&prev_obsolete_sm, 4440 spa->spa_meta_objset, 4441 scip->scip_prev_obsolete_sm_object, 4442 0, vd->vdev_asize, 0)); 4443 dump_spacemap(spa->spa_meta_objset, prev_obsolete_sm); 4444 (void) printf("\n"); 4445 space_map_close(prev_obsolete_sm); 4446 } 4447 4448 scip_count += 2; 4449 } 4450 4451 for (uint64_t i = 0; i < spa->spa_root_vdev->vdev_children; i++) { 4452 vdev_t *vd = spa->spa_root_vdev->vdev_child[i]; 4453 vdev_indirect_config_t *vic = &vd->vdev_indirect_config; 4454 4455 if (vic->vic_mapping_object != 0) { 4456 ASSERT(vd->vdev_ops == &vdev_indirect_ops || 4457 vd->vdev_removing); 4458 indirect_vdev_count++; 4459 4460 if (vd->vdev_indirect_mapping->vim_havecounts) { 4461 obsolete_counts_count++; 4462 } 4463 } 4464 if (vdev_obsolete_counts_are_precise(vd)) { 4465 ASSERT(vic->vic_mapping_object != 0); 4466 precise_vdev_count++; 4467 } 4468 if (vdev_obsolete_sm_object(vd) != 0) { 4469 ASSERT(vic->vic_mapping_object != 0); 4470 obsolete_sm_count++; 4471 } 4472 } 4473 4474 (void) feature_get_refcount(spa, 4475 &spa_feature_table[SPA_FEATURE_DEVICE_REMOVAL], 4476 &dr_feature_refcount); 4477 (void) feature_get_refcount(spa, 4478 &spa_feature_table[SPA_FEATURE_OBSOLETE_COUNTS], 4479 &oc_feature_refcount); 4480 4481 if (dr_feature_refcount != indirect_vdev_count) { 4482 ret = 1; 4483 (void) printf("Number of indirect vdevs (%llu) " \ 4484 "does not match feature count (%llu)\n", 4485 (u_longlong_t)indirect_vdev_count, 4486 (u_longlong_t)dr_feature_refcount); 4487 } else { 4488 (void) printf("Verified device_removal feature refcount " \ 4489 "of %llu is correct\n", 4490 (u_longlong_t)dr_feature_refcount); 4491 } 4492 4493 if (zap_contains(spa_meta_objset(spa), DMU_POOL_DIRECTORY_OBJECT, 4494 DMU_POOL_OBSOLETE_BPOBJ) == 0) { 4495 obsolete_bpobj_count++; 4496 } 4497 4498 4499 obsolete_counts_object_count = precise_vdev_count; 4500 obsolete_counts_object_count += obsolete_sm_count; 4501 obsolete_counts_object_count += obsolete_counts_count; 4502 obsolete_counts_object_count += scip_count; 4503 obsolete_counts_object_count += obsolete_bpobj_count; 4504 obsolete_counts_object_count += remap_deadlist_count; 4505 4506 if (oc_feature_refcount != obsolete_counts_object_count) { 4507 ret = 1; 4508 (void) printf("Number of obsolete counts objects (%llu) " \ 4509 "does not match feature count (%llu)\n", 4510 (u_longlong_t)obsolete_counts_object_count, 4511 (u_longlong_t)oc_feature_refcount); 4512 (void) printf("pv:%llu os:%llu oc:%llu sc:%llu " 4513 "ob:%llu rd:%llu\n", 4514 (u_longlong_t)precise_vdev_count, 4515 (u_longlong_t)obsolete_sm_count, 4516 (u_longlong_t)obsolete_counts_count, 4517 (u_longlong_t)scip_count, 4518 (u_longlong_t)obsolete_bpobj_count, 4519 (u_longlong_t)remap_deadlist_count); 4520 } else { 4521 (void) printf("Verified indirect_refcount feature refcount " \ 4522 "of %llu is correct\n", 4523 (u_longlong_t)oc_feature_refcount); 4524 } 4525 return (ret); 4526 } 4527 4528 static void 4529 zdb_set_skip_mmp(char *target) 4530 { 4531 spa_t *spa; 4532 4533 /* 4534 * Disable the activity check to allow examination of 4535 * active pools. 4536 */ 4537 mutex_enter(&spa_namespace_lock); 4538 if ((spa = spa_lookup(target)) != NULL) { 4539 spa->spa_import_flags |= ZFS_IMPORT_SKIP_MMP; 4540 } 4541 mutex_exit(&spa_namespace_lock); 4542 } 4543 4544 #define BOGUS_SUFFIX "_CHECKPOINTED_UNIVERSE" 4545 /* 4546 * Import the checkpointed state of the pool specified by the target 4547 * parameter as readonly. The function also accepts a pool config 4548 * as an optional parameter, else it attempts to infer the config by 4549 * the name of the target pool. 4550 * 4551 * Note that the checkpointed state's pool name will be the name of 4552 * the original pool with the above suffix appened to it. In addition, 4553 * if the target is not a pool name (e.g. a path to a dataset) then 4554 * the new_path parameter is populated with the updated path to 4555 * reflect the fact that we are looking into the checkpointed state. 4556 * 4557 * The function returns a newly-allocated copy of the name of the 4558 * pool containing the checkpointed state. When this copy is no 4559 * longer needed it should be freed with free(3C). Same thing 4560 * applies to the new_path parameter if allocated. 4561 */ 4562 static char * 4563 import_checkpointed_state(char *target, nvlist_t *cfg, char **new_path) 4564 { 4565 int error = 0; 4566 char *poolname, *bogus_name; 4567 4568 /* If the target is not a pool, the extract the pool name */ 4569 char *path_start = strchr(target, '/'); 4570 if (path_start != NULL) { 4571 size_t poolname_len = path_start - target; 4572 poolname = strndup(target, poolname_len); 4573 } else { 4574 poolname = target; 4575 } 4576 4577 if (cfg == NULL) { 4578 zdb_set_skip_mmp(poolname); 4579 error = spa_get_stats(poolname, &cfg, NULL, 0); 4580 if (error != 0) { 4581 fatal("Tried to read config of pool \"%s\" but " 4582 "spa_get_stats() failed with error %d\n", 4583 poolname, error); 4584 } 4585 } 4586 4587 (void) asprintf(&bogus_name, "%s%s", poolname, BOGUS_SUFFIX); 4588 fnvlist_add_string(cfg, ZPOOL_CONFIG_POOL_NAME, bogus_name); 4589 4590 error = spa_import(bogus_name, cfg, NULL, 4591 ZFS_IMPORT_MISSING_LOG | ZFS_IMPORT_CHECKPOINT | 4592 ZFS_IMPORT_SKIP_MMP); 4593 if (error != 0) { 4594 fatal("Tried to import pool \"%s\" but spa_import() failed " 4595 "with error %d\n", bogus_name, error); 4596 } 4597 4598 if (new_path != NULL && path_start != NULL) 4599 (void) asprintf(new_path, "%s%s", bogus_name, path_start); 4600 4601 if (target != poolname) 4602 free(poolname); 4603 4604 return (bogus_name); 4605 } 4606 4607 typedef struct verify_checkpoint_sm_entry_cb_arg { 4608 vdev_t *vcsec_vd; 4609 4610 /* the following fields are only used for printing progress */ 4611 uint64_t vcsec_entryid; 4612 uint64_t vcsec_num_entries; 4613 } verify_checkpoint_sm_entry_cb_arg_t; 4614 4615 #define ENTRIES_PER_PROGRESS_UPDATE 10000 4616 4617 static int 4618 verify_checkpoint_sm_entry_cb(space_map_entry_t *sme, void *arg) 4619 { 4620 verify_checkpoint_sm_entry_cb_arg_t *vcsec = arg; 4621 vdev_t *vd = vcsec->vcsec_vd; 4622 metaslab_t *ms = vd->vdev_ms[sme->sme_offset >> vd->vdev_ms_shift]; 4623 uint64_t end = sme->sme_offset + sme->sme_run; 4624 4625 ASSERT(sme->sme_type == SM_FREE); 4626 4627 if ((vcsec->vcsec_entryid % ENTRIES_PER_PROGRESS_UPDATE) == 0) { 4628 (void) fprintf(stderr, 4629 "\rverifying vdev %llu, space map entry %llu of %llu ...", 4630 (longlong_t)vd->vdev_id, 4631 (longlong_t)vcsec->vcsec_entryid, 4632 (longlong_t)vcsec->vcsec_num_entries); 4633 } 4634 vcsec->vcsec_entryid++; 4635 4636 /* 4637 * See comment in checkpoint_sm_exclude_entry_cb() 4638 */ 4639 VERIFY3U(sme->sme_offset, >=, ms->ms_start); 4640 VERIFY3U(end, <=, ms->ms_start + ms->ms_size); 4641 4642 /* 4643 * The entries in the vdev_checkpoint_sm should be marked as 4644 * allocated in the checkpointed state of the pool, therefore 4645 * their respective ms_allocateable trees should not contain them. 4646 */ 4647 mutex_enter(&ms->ms_lock); 4648 range_tree_verify_not_present(ms->ms_allocatable, 4649 sme->sme_offset, sme->sme_run); 4650 mutex_exit(&ms->ms_lock); 4651 4652 return (0); 4653 } 4654 4655 /* 4656 * Verify that all segments in the vdev_checkpoint_sm are allocated 4657 * according to the checkpoint's ms_sm (i.e. are not in the checkpoint's 4658 * ms_allocatable). 4659 * 4660 * Do so by comparing the checkpoint space maps (vdev_checkpoint_sm) of 4661 * each vdev in the current state of the pool to the metaslab space maps 4662 * (ms_sm) of the checkpointed state of the pool. 4663 * 4664 * Note that the function changes the state of the ms_allocatable 4665 * trees of the current spa_t. The entries of these ms_allocatable 4666 * trees are cleared out and then repopulated from with the free 4667 * entries of their respective ms_sm space maps. 4668 */ 4669 static void 4670 verify_checkpoint_vdev_spacemaps(spa_t *checkpoint, spa_t *current) 4671 { 4672 vdev_t *ckpoint_rvd = checkpoint->spa_root_vdev; 4673 vdev_t *current_rvd = current->spa_root_vdev; 4674 4675 load_concrete_ms_allocatable_trees(checkpoint, SM_FREE); 4676 4677 for (uint64_t c = 0; c < ckpoint_rvd->vdev_children; c++) { 4678 vdev_t *ckpoint_vd = ckpoint_rvd->vdev_child[c]; 4679 vdev_t *current_vd = current_rvd->vdev_child[c]; 4680 4681 space_map_t *checkpoint_sm = NULL; 4682 uint64_t checkpoint_sm_obj; 4683 4684 if (ckpoint_vd->vdev_ops == &vdev_indirect_ops) { 4685 /* 4686 * Since we don't allow device removal in a pool 4687 * that has a checkpoint, we expect that all removed 4688 * vdevs were removed from the pool before the 4689 * checkpoint. 4690 */ 4691 ASSERT3P(current_vd->vdev_ops, ==, &vdev_indirect_ops); 4692 continue; 4693 } 4694 4695 /* 4696 * If the checkpoint space map doesn't exist, then nothing 4697 * here is checkpointed so there's nothing to verify. 4698 */ 4699 if (current_vd->vdev_top_zap == 0 || 4700 zap_contains(spa_meta_objset(current), 4701 current_vd->vdev_top_zap, 4702 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM) != 0) 4703 continue; 4704 4705 VERIFY0(zap_lookup(spa_meta_objset(current), 4706 current_vd->vdev_top_zap, VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, 4707 sizeof (uint64_t), 1, &checkpoint_sm_obj)); 4708 4709 VERIFY0(space_map_open(&checkpoint_sm, spa_meta_objset(current), 4710 checkpoint_sm_obj, 0, current_vd->vdev_asize, 4711 current_vd->vdev_ashift)); 4712 4713 verify_checkpoint_sm_entry_cb_arg_t vcsec; 4714 vcsec.vcsec_vd = ckpoint_vd; 4715 vcsec.vcsec_entryid = 0; 4716 vcsec.vcsec_num_entries = 4717 space_map_length(checkpoint_sm) / sizeof (uint64_t); 4718 VERIFY0(space_map_iterate(checkpoint_sm, 4719 space_map_length(checkpoint_sm), 4720 verify_checkpoint_sm_entry_cb, &vcsec)); 4721 dump_spacemap(current->spa_meta_objset, checkpoint_sm); 4722 space_map_close(checkpoint_sm); 4723 } 4724 4725 /* 4726 * If we've added vdevs since we took the checkpoint, ensure 4727 * that their checkpoint space maps are empty. 4728 */ 4729 if (ckpoint_rvd->vdev_children < current_rvd->vdev_children) { 4730 for (uint64_t c = ckpoint_rvd->vdev_children; 4731 c < current_rvd->vdev_children; c++) { 4732 vdev_t *current_vd = current_rvd->vdev_child[c]; 4733 ASSERT3P(current_vd->vdev_checkpoint_sm, ==, NULL); 4734 } 4735 } 4736 4737 /* for cleaner progress output */ 4738 (void) fprintf(stderr, "\n"); 4739 } 4740 4741 /* 4742 * Verifies that all space that's allocated in the checkpoint is 4743 * still allocated in the current version, by checking that everything 4744 * in checkpoint's ms_allocatable (which is actually allocated, not 4745 * allocatable/free) is not present in current's ms_allocatable. 4746 * 4747 * Note that the function changes the state of the ms_allocatable 4748 * trees of both spas when called. The entries of all ms_allocatable 4749 * trees are cleared out and then repopulated from their respective 4750 * ms_sm space maps. In the checkpointed state we load the allocated 4751 * entries, and in the current state we load the free entries. 4752 */ 4753 static void 4754 verify_checkpoint_ms_spacemaps(spa_t *checkpoint, spa_t *current) 4755 { 4756 vdev_t *ckpoint_rvd = checkpoint->spa_root_vdev; 4757 vdev_t *current_rvd = current->spa_root_vdev; 4758 4759 load_concrete_ms_allocatable_trees(checkpoint, SM_ALLOC); 4760 load_concrete_ms_allocatable_trees(current, SM_FREE); 4761 4762 for (uint64_t i = 0; i < ckpoint_rvd->vdev_children; i++) { 4763 vdev_t *ckpoint_vd = ckpoint_rvd->vdev_child[i]; 4764 vdev_t *current_vd = current_rvd->vdev_child[i]; 4765 4766 if (ckpoint_vd->vdev_ops == &vdev_indirect_ops) { 4767 /* 4768 * See comment in verify_checkpoint_vdev_spacemaps() 4769 */ 4770 ASSERT3P(current_vd->vdev_ops, ==, &vdev_indirect_ops); 4771 continue; 4772 } 4773 4774 for (uint64_t m = 0; m < ckpoint_vd->vdev_ms_count; m++) { 4775 metaslab_t *ckpoint_msp = ckpoint_vd->vdev_ms[m]; 4776 metaslab_t *current_msp = current_vd->vdev_ms[m]; 4777 4778 (void) fprintf(stderr, 4779 "\rverifying vdev %llu of %llu, " 4780 "metaslab %llu of %llu ...", 4781 (longlong_t)current_vd->vdev_id, 4782 (longlong_t)current_rvd->vdev_children, 4783 (longlong_t)current_vd->vdev_ms[m]->ms_id, 4784 (longlong_t)current_vd->vdev_ms_count); 4785 4786 /* 4787 * We walk through the ms_allocatable trees that 4788 * are loaded with the allocated blocks from the 4789 * ms_sm spacemaps of the checkpoint. For each 4790 * one of these ranges we ensure that none of them 4791 * exists in the ms_allocatable trees of the 4792 * current state which are loaded with the ranges 4793 * that are currently free. 4794 * 4795 * This way we ensure that none of the blocks that 4796 * are part of the checkpoint were freed by mistake. 4797 */ 4798 range_tree_walk(ckpoint_msp->ms_allocatable, 4799 (range_tree_func_t *)range_tree_verify_not_present, 4800 current_msp->ms_allocatable); 4801 } 4802 } 4803 4804 /* for cleaner progress output */ 4805 (void) fprintf(stderr, "\n"); 4806 } 4807 4808 static void 4809 verify_checkpoint_blocks(spa_t *spa) 4810 { 4811 ASSERT(!dump_opt['L']); 4812 4813 spa_t *checkpoint_spa; 4814 char *checkpoint_pool; 4815 nvlist_t *config = NULL; 4816 int error = 0; 4817 4818 /* 4819 * We import the checkpointed state of the pool (under a different 4820 * name) so we can do verification on it against the current state 4821 * of the pool. 4822 */ 4823 checkpoint_pool = import_checkpointed_state(spa->spa_name, config, 4824 NULL); 4825 ASSERT(strcmp(spa->spa_name, checkpoint_pool) != 0); 4826 4827 error = spa_open(checkpoint_pool, &checkpoint_spa, FTAG); 4828 if (error != 0) { 4829 fatal("Tried to open pool \"%s\" but spa_open() failed with " 4830 "error %d\n", checkpoint_pool, error); 4831 } 4832 4833 /* 4834 * Ensure that ranges in the checkpoint space maps of each vdev 4835 * are allocated according to the checkpointed state's metaslab 4836 * space maps. 4837 */ 4838 verify_checkpoint_vdev_spacemaps(checkpoint_spa, spa); 4839 4840 /* 4841 * Ensure that allocated ranges in the checkpoint's metaslab 4842 * space maps remain allocated in the metaslab space maps of 4843 * the current state. 4844 */ 4845 verify_checkpoint_ms_spacemaps(checkpoint_spa, spa); 4846 4847 /* 4848 * Once we are done, we get rid of the checkpointed state. 4849 */ 4850 spa_close(checkpoint_spa, FTAG); 4851 free(checkpoint_pool); 4852 } 4853 4854 static void 4855 dump_leftover_checkpoint_blocks(spa_t *spa) 4856 { 4857 vdev_t *rvd = spa->spa_root_vdev; 4858 4859 for (uint64_t i = 0; i < rvd->vdev_children; i++) { 4860 vdev_t *vd = rvd->vdev_child[i]; 4861 4862 space_map_t *checkpoint_sm = NULL; 4863 uint64_t checkpoint_sm_obj; 4864 4865 if (vd->vdev_top_zap == 0) 4866 continue; 4867 4868 if (zap_contains(spa_meta_objset(spa), vd->vdev_top_zap, 4869 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM) != 0) 4870 continue; 4871 4872 VERIFY0(zap_lookup(spa_meta_objset(spa), vd->vdev_top_zap, 4873 VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, 4874 sizeof (uint64_t), 1, &checkpoint_sm_obj)); 4875 4876 VERIFY0(space_map_open(&checkpoint_sm, spa_meta_objset(spa), 4877 checkpoint_sm_obj, 0, vd->vdev_asize, vd->vdev_ashift)); 4878 dump_spacemap(spa->spa_meta_objset, checkpoint_sm); 4879 space_map_close(checkpoint_sm); 4880 } 4881 } 4882 4883 static int 4884 verify_checkpoint(spa_t *spa) 4885 { 4886 uberblock_t checkpoint; 4887 int error; 4888 4889 if (!spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) 4890 return (0); 4891 4892 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, 4893 DMU_POOL_ZPOOL_CHECKPOINT, sizeof (uint64_t), 4894 sizeof (uberblock_t) / sizeof (uint64_t), &checkpoint); 4895 4896 if (error == ENOENT && !dump_opt['L']) { 4897 /* 4898 * If the feature is active but the uberblock is missing 4899 * then we must be in the middle of discarding the 4900 * checkpoint. 4901 */ 4902 (void) printf("\nPartially discarded checkpoint " 4903 "state found:\n"); 4904 dump_leftover_checkpoint_blocks(spa); 4905 return (0); 4906 } else if (error != 0) { 4907 (void) printf("lookup error %d when looking for " 4908 "checkpointed uberblock in MOS\n", error); 4909 return (error); 4910 } 4911 dump_uberblock(&checkpoint, "\nCheckpointed uberblock found:\n", "\n"); 4912 4913 if (checkpoint.ub_checkpoint_txg == 0) { 4914 (void) printf("\nub_checkpoint_txg not set in checkpointed " 4915 "uberblock\n"); 4916 error = 3; 4917 } 4918 4919 if (error == 0 && !dump_opt['L']) 4920 verify_checkpoint_blocks(spa); 4921 4922 return (error); 4923 } 4924 4925 /* ARGSUSED */ 4926 static void 4927 mos_leaks_cb(void *arg, uint64_t start, uint64_t size) 4928 { 4929 for (uint64_t i = start; i < size; i++) { 4930 (void) printf("MOS object %llu referenced but not allocated\n", 4931 (u_longlong_t)i); 4932 } 4933 } 4934 4935 static range_tree_t *mos_refd_objs; 4936 4937 static void 4938 mos_obj_refd(uint64_t obj) 4939 { 4940 if (obj != 0 && mos_refd_objs != NULL) 4941 range_tree_add(mos_refd_objs, obj, 1); 4942 } 4943 4944 static void 4945 mos_leak_vdev_top_zap(vdev_t *vd) 4946 { 4947 uint64_t ms_flush_data_obj; 4948 4949 int error = zap_lookup(spa_meta_objset(vd->vdev_spa), 4950 vd->vdev_top_zap, VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, 4951 sizeof (ms_flush_data_obj), 1, &ms_flush_data_obj); 4952 if (error == ENOENT) 4953 return; 4954 ASSERT0(error); 4955 4956 mos_obj_refd(ms_flush_data_obj); 4957 } 4958 4959 static void 4960 mos_leak_vdev(vdev_t *vd) 4961 { 4962 mos_obj_refd(vd->vdev_dtl_object); 4963 mos_obj_refd(vd->vdev_ms_array); 4964 mos_obj_refd(vd->vdev_indirect_config.vic_births_object); 4965 mos_obj_refd(vd->vdev_indirect_config.vic_mapping_object); 4966 mos_obj_refd(vd->vdev_leaf_zap); 4967 if (vd->vdev_checkpoint_sm != NULL) 4968 mos_obj_refd(vd->vdev_checkpoint_sm->sm_object); 4969 if (vd->vdev_indirect_mapping != NULL) { 4970 mos_obj_refd(vd->vdev_indirect_mapping-> 4971 vim_phys->vimp_counts_object); 4972 } 4973 if (vd->vdev_obsolete_sm != NULL) 4974 mos_obj_refd(vd->vdev_obsolete_sm->sm_object); 4975 4976 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 4977 metaslab_t *ms = vd->vdev_ms[m]; 4978 mos_obj_refd(space_map_object(ms->ms_sm)); 4979 } 4980 4981 if (vd->vdev_top_zap != 0) { 4982 mos_obj_refd(vd->vdev_top_zap); 4983 mos_leak_vdev_top_zap(vd); 4984 } 4985 4986 for (uint64_t c = 0; c < vd->vdev_children; c++) { 4987 mos_leak_vdev(vd->vdev_child[c]); 4988 } 4989 } 4990 4991 static void 4992 mos_leak_log_spacemaps(spa_t *spa) 4993 { 4994 uint64_t spacemap_zap; 4995 4996 int error = zap_lookup(spa_meta_objset(spa), 4997 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_LOG_SPACEMAP_ZAP, 4998 sizeof (spacemap_zap), 1, &spacemap_zap); 4999 if (error == ENOENT) 5000 return; 5001 ASSERT0(error); 5002 5003 mos_obj_refd(spacemap_zap); 5004 for (spa_log_sm_t *sls = avl_first(&spa->spa_sm_logs_by_txg); 5005 sls; sls = AVL_NEXT(&spa->spa_sm_logs_by_txg, sls)) 5006 mos_obj_refd(sls->sls_sm_obj); 5007 } 5008 5009 static int 5010 dump_mos_leaks(spa_t *spa) 5011 { 5012 int rv = 0; 5013 objset_t *mos = spa->spa_meta_objset; 5014 dsl_pool_t *dp = spa->spa_dsl_pool; 5015 5016 /* Visit and mark all referenced objects in the MOS */ 5017 5018 mos_obj_refd(DMU_POOL_DIRECTORY_OBJECT); 5019 mos_obj_refd(spa->spa_pool_props_object); 5020 mos_obj_refd(spa->spa_config_object); 5021 mos_obj_refd(spa->spa_ddt_stat_object); 5022 mos_obj_refd(spa->spa_feat_desc_obj); 5023 mos_obj_refd(spa->spa_feat_enabled_txg_obj); 5024 mos_obj_refd(spa->spa_feat_for_read_obj); 5025 mos_obj_refd(spa->spa_feat_for_write_obj); 5026 mos_obj_refd(spa->spa_history); 5027 mos_obj_refd(spa->spa_errlog_last); 5028 mos_obj_refd(spa->spa_errlog_scrub); 5029 mos_obj_refd(spa->spa_all_vdev_zaps); 5030 mos_obj_refd(spa->spa_dsl_pool->dp_bptree_obj); 5031 mos_obj_refd(spa->spa_dsl_pool->dp_tmp_userrefs_obj); 5032 mos_obj_refd(spa->spa_dsl_pool->dp_scan->scn_phys.scn_queue_obj); 5033 bpobj_count_refd(&spa->spa_deferred_bpobj); 5034 mos_obj_refd(dp->dp_empty_bpobj); 5035 bpobj_count_refd(&dp->dp_obsolete_bpobj); 5036 bpobj_count_refd(&dp->dp_free_bpobj); 5037 mos_obj_refd(spa->spa_l2cache.sav_object); 5038 mos_obj_refd(spa->spa_spares.sav_object); 5039 5040 if (spa->spa_syncing_log_sm != NULL) 5041 mos_obj_refd(spa->spa_syncing_log_sm->sm_object); 5042 mos_leak_log_spacemaps(spa); 5043 5044 mos_obj_refd(spa->spa_condensing_indirect_phys. 5045 scip_next_mapping_object); 5046 mos_obj_refd(spa->spa_condensing_indirect_phys. 5047 scip_prev_obsolete_sm_object); 5048 if (spa->spa_condensing_indirect_phys.scip_next_mapping_object != 0) { 5049 vdev_indirect_mapping_t *vim = 5050 vdev_indirect_mapping_open(mos, 5051 spa->spa_condensing_indirect_phys.scip_next_mapping_object); 5052 mos_obj_refd(vim->vim_phys->vimp_counts_object); 5053 vdev_indirect_mapping_close(vim); 5054 } 5055 5056 if (dp->dp_origin_snap != NULL) { 5057 dsl_dataset_t *ds; 5058 5059 dsl_pool_config_enter(dp, FTAG); 5060 VERIFY0(dsl_dataset_hold_obj(dp, 5061 dsl_dataset_phys(dp->dp_origin_snap)->ds_next_snap_obj, 5062 FTAG, &ds)); 5063 count_ds_mos_objects(ds); 5064 dump_deadlist(&ds->ds_deadlist); 5065 dsl_dataset_rele(ds, FTAG); 5066 dsl_pool_config_exit(dp, FTAG); 5067 5068 count_ds_mos_objects(dp->dp_origin_snap); 5069 dump_deadlist(&dp->dp_origin_snap->ds_deadlist); 5070 } 5071 count_dir_mos_objects(dp->dp_mos_dir); 5072 if (dp->dp_free_dir != NULL) 5073 count_dir_mos_objects(dp->dp_free_dir); 5074 if (dp->dp_leak_dir != NULL) 5075 count_dir_mos_objects(dp->dp_leak_dir); 5076 5077 mos_leak_vdev(spa->spa_root_vdev); 5078 5079 for (uint64_t class = 0; class < DDT_CLASSES; class++) { 5080 for (uint64_t type = 0; type < DDT_TYPES; type++) { 5081 for (uint64_t cksum = 0; 5082 cksum < ZIO_CHECKSUM_FUNCTIONS; cksum++) { 5083 ddt_t *ddt = spa->spa_ddt[cksum]; 5084 mos_obj_refd(ddt->ddt_object[type][class]); 5085 } 5086 } 5087 } 5088 5089 /* 5090 * Visit all allocated objects and make sure they are referenced. 5091 */ 5092 uint64_t object = 0; 5093 while (dmu_object_next(mos, &object, B_FALSE, 0) == 0) { 5094 if (range_tree_contains(mos_refd_objs, object, 1)) { 5095 range_tree_remove(mos_refd_objs, object, 1); 5096 } else { 5097 dmu_object_info_t doi; 5098 const char *name; 5099 dmu_object_info(mos, object, &doi); 5100 if (doi.doi_type & DMU_OT_NEWTYPE) { 5101 dmu_object_byteswap_t bswap = 5102 DMU_OT_BYTESWAP(doi.doi_type); 5103 name = dmu_ot_byteswap[bswap].ob_name; 5104 } else { 5105 name = dmu_ot[doi.doi_type].ot_name; 5106 } 5107 5108 (void) printf("MOS object %llu (%s) leaked\n", 5109 (u_longlong_t)object, name); 5110 rv = 2; 5111 } 5112 } 5113 (void) range_tree_walk(mos_refd_objs, mos_leaks_cb, NULL); 5114 if (!range_tree_is_empty(mos_refd_objs)) 5115 rv = 2; 5116 range_tree_vacate(mos_refd_objs, NULL, NULL); 5117 range_tree_destroy(mos_refd_objs); 5118 return (rv); 5119 } 5120 5121 typedef struct log_sm_obsolete_stats_arg { 5122 uint64_t lsos_current_txg; 5123 5124 uint64_t lsos_total_entries; 5125 uint64_t lsos_valid_entries; 5126 5127 uint64_t lsos_sm_entries; 5128 uint64_t lsos_valid_sm_entries; 5129 } log_sm_obsolete_stats_arg_t; 5130 5131 static int 5132 log_spacemap_obsolete_stats_cb(spa_t *spa, space_map_entry_t *sme, 5133 uint64_t txg, void *arg) 5134 { 5135 log_sm_obsolete_stats_arg_t *lsos = arg; 5136 uint64_t offset = sme->sme_offset; 5137 uint64_t vdev_id = sme->sme_vdev; 5138 5139 if (lsos->lsos_current_txg == 0) { 5140 /* this is the first log */ 5141 lsos->lsos_current_txg = txg; 5142 } else if (lsos->lsos_current_txg < txg) { 5143 /* we just changed log - print stats and reset */ 5144 (void) printf("%-8llu valid entries out of %-8llu - txg %llu\n", 5145 (u_longlong_t)lsos->lsos_valid_sm_entries, 5146 (u_longlong_t)lsos->lsos_sm_entries, 5147 (u_longlong_t)lsos->lsos_current_txg); 5148 lsos->lsos_valid_sm_entries = 0; 5149 lsos->lsos_sm_entries = 0; 5150 lsos->lsos_current_txg = txg; 5151 } 5152 ASSERT3U(lsos->lsos_current_txg, ==, txg); 5153 5154 lsos->lsos_sm_entries++; 5155 lsos->lsos_total_entries++; 5156 5157 vdev_t *vd = vdev_lookup_top(spa, vdev_id); 5158 if (!vdev_is_concrete(vd)) 5159 return (0); 5160 5161 metaslab_t *ms = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 5162 ASSERT(sme->sme_type == SM_ALLOC || sme->sme_type == SM_FREE); 5163 5164 if (txg < metaslab_unflushed_txg(ms)) 5165 return (0); 5166 lsos->lsos_valid_sm_entries++; 5167 lsos->lsos_valid_entries++; 5168 return (0); 5169 } 5170 5171 static void 5172 dump_log_spacemap_obsolete_stats(spa_t *spa) 5173 { 5174 if (!spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) 5175 return; 5176 5177 log_sm_obsolete_stats_arg_t lsos; 5178 bzero(&lsos, sizeof (lsos)); 5179 5180 (void) printf("Log Space Map Obsolete Entry Statistics:\n"); 5181 5182 iterate_through_spacemap_logs(spa, 5183 log_spacemap_obsolete_stats_cb, &lsos); 5184 5185 /* print stats for latest log */ 5186 (void) printf("%-8llu valid entries out of %-8llu - txg %llu\n", 5187 (u_longlong_t)lsos.lsos_valid_sm_entries, 5188 (u_longlong_t)lsos.lsos_sm_entries, 5189 (u_longlong_t)lsos.lsos_current_txg); 5190 5191 (void) printf("%-8llu valid entries out of %-8llu - total\n\n", 5192 (u_longlong_t)lsos.lsos_valid_entries, 5193 (u_longlong_t)lsos.lsos_total_entries); 5194 } 5195 5196 static void 5197 dump_zpool(spa_t *spa) 5198 { 5199 dsl_pool_t *dp = spa_get_dsl(spa); 5200 int rc = 0; 5201 5202 if (dump_opt['S']) { 5203 dump_simulated_ddt(spa); 5204 return; 5205 } 5206 5207 if (!dump_opt['e'] && dump_opt['C'] > 1) { 5208 (void) printf("\nCached configuration:\n"); 5209 dump_nvlist(spa->spa_config, 8); 5210 } 5211 5212 if (dump_opt['C']) 5213 dump_config(spa); 5214 5215 if (dump_opt['u']) 5216 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n"); 5217 5218 if (dump_opt['D']) 5219 dump_all_ddts(spa); 5220 5221 if (dump_opt['d'] > 2 || dump_opt['m']) 5222 dump_metaslabs(spa); 5223 if (dump_opt['M']) 5224 dump_metaslab_groups(spa); 5225 if (dump_opt['d'] > 2 || dump_opt['m']) { 5226 dump_log_spacemaps(spa); 5227 dump_log_spacemap_obsolete_stats(spa); 5228 } 5229 5230 if (dump_opt['d'] || dump_opt['i']) { 5231 mos_refd_objs = range_tree_create(NULL, NULL); 5232 dump_dir(dp->dp_meta_objset); 5233 5234 if (dump_opt['d'] >= 3) { 5235 dsl_pool_t *dp = spa->spa_dsl_pool; 5236 dump_full_bpobj(&spa->spa_deferred_bpobj, 5237 "Deferred frees", 0); 5238 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 5239 dump_full_bpobj(&dp->dp_free_bpobj, 5240 "Pool snapshot frees", 0); 5241 } 5242 if (bpobj_is_open(&dp->dp_obsolete_bpobj)) { 5243 ASSERT(spa_feature_is_enabled(spa, 5244 SPA_FEATURE_DEVICE_REMOVAL)); 5245 dump_full_bpobj(&dp->dp_obsolete_bpobj, 5246 "Pool obsolete blocks", 0); 5247 } 5248 5249 if (spa_feature_is_active(spa, 5250 SPA_FEATURE_ASYNC_DESTROY)) { 5251 dump_bptree(spa->spa_meta_objset, 5252 dp->dp_bptree_obj, 5253 "Pool dataset frees"); 5254 } 5255 dump_dtl(spa->spa_root_vdev, 0); 5256 } 5257 (void) dmu_objset_find(spa_name(spa), dump_one_dir, 5258 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5259 5260 if (rc == 0 && !dump_opt['L']) 5261 rc = dump_mos_leaks(spa); 5262 5263 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 5264 uint64_t refcount; 5265 5266 if (!(spa_feature_table[f].fi_flags & 5267 ZFEATURE_FLAG_PER_DATASET) || 5268 !spa_feature_is_enabled(spa, f)) { 5269 ASSERT0(dataset_feature_count[f]); 5270 continue; 5271 } 5272 (void) feature_get_refcount(spa, 5273 &spa_feature_table[f], &refcount); 5274 if (dataset_feature_count[f] != refcount) { 5275 (void) printf("%s feature refcount mismatch: " 5276 "%lld datasets != %lld refcount\n", 5277 spa_feature_table[f].fi_uname, 5278 (longlong_t)dataset_feature_count[f], 5279 (longlong_t)refcount); 5280 rc = 2; 5281 } else { 5282 (void) printf("Verified %s feature refcount " 5283 "of %llu is correct\n", 5284 spa_feature_table[f].fi_uname, 5285 (longlong_t)refcount); 5286 } 5287 } 5288 5289 if (rc == 0) 5290 rc = verify_device_removal_feature_counts(spa); 5291 } 5292 5293 if (rc == 0 && (dump_opt['b'] || dump_opt['c'])) 5294 rc = dump_block_stats(spa); 5295 5296 if (rc == 0) 5297 rc = verify_spacemap_refcounts(spa); 5298 5299 if (dump_opt['s']) 5300 show_pool_stats(spa); 5301 5302 if (dump_opt['h']) 5303 dump_history(spa); 5304 5305 if (rc == 0) 5306 rc = verify_checkpoint(spa); 5307 5308 if (rc != 0) { 5309 dump_debug_buffer(); 5310 exit(rc); 5311 } 5312 } 5313 5314 #define ZDB_FLAG_CHECKSUM 0x0001 5315 #define ZDB_FLAG_DECOMPRESS 0x0002 5316 #define ZDB_FLAG_BSWAP 0x0004 5317 #define ZDB_FLAG_GBH 0x0008 5318 #define ZDB_FLAG_INDIRECT 0x0010 5319 #define ZDB_FLAG_PHYS 0x0020 5320 #define ZDB_FLAG_RAW 0x0040 5321 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 5322 5323 static int flagbits[256]; 5324 5325 static void 5326 zdb_print_blkptr(blkptr_t *bp, int flags) 5327 { 5328 char blkbuf[BP_SPRINTF_LEN]; 5329 5330 if (flags & ZDB_FLAG_BSWAP) 5331 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 5332 5333 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 5334 (void) printf("%s\n", blkbuf); 5335 } 5336 5337 static void 5338 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 5339 { 5340 int i; 5341 5342 for (i = 0; i < nbps; i++) 5343 zdb_print_blkptr(&bp[i], flags); 5344 } 5345 5346 static void 5347 zdb_dump_gbh(void *buf, int flags) 5348 { 5349 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 5350 } 5351 5352 static void 5353 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 5354 { 5355 if (flags & ZDB_FLAG_BSWAP) 5356 byteswap_uint64_array(buf, size); 5357 (void) write(1, buf, size); 5358 } 5359 5360 static void 5361 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 5362 { 5363 uint64_t *d = (uint64_t *)buf; 5364 unsigned nwords = size / sizeof (uint64_t); 5365 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 5366 unsigned i, j; 5367 const char *hdr; 5368 char *c; 5369 5370 5371 if (do_bswap) 5372 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 5373 else 5374 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 5375 5376 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 5377 5378 for (i = 0; i < nwords; i += 2) { 5379 (void) printf("%06llx: %016llx %016llx ", 5380 (u_longlong_t)(i * sizeof (uint64_t)), 5381 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 5382 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 5383 5384 c = (char *)&d[i]; 5385 for (j = 0; j < 2 * sizeof (uint64_t); j++) 5386 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 5387 (void) printf("\n"); 5388 } 5389 } 5390 5391 /* 5392 * There are two acceptable formats: 5393 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 5394 * child[.child]* - For example: 0.1.1 5395 * 5396 * The second form can be used to specify arbitrary vdevs anywhere 5397 * in the heirarchy. For example, in a pool with a mirror of 5398 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 5399 */ 5400 static vdev_t * 5401 zdb_vdev_lookup(vdev_t *vdev, const char *path) 5402 { 5403 char *s, *p, *q; 5404 unsigned i; 5405 5406 if (vdev == NULL) 5407 return (NULL); 5408 5409 /* First, assume the x.x.x.x format */ 5410 i = strtoul(path, &s, 10); 5411 if (s == path || (s && *s != '.' && *s != '\0')) 5412 goto name; 5413 if (i >= vdev->vdev_children) 5414 return (NULL); 5415 5416 vdev = vdev->vdev_child[i]; 5417 if (*s == '\0') 5418 return (vdev); 5419 return (zdb_vdev_lookup(vdev, s+1)); 5420 5421 name: 5422 for (i = 0; i < vdev->vdev_children; i++) { 5423 vdev_t *vc = vdev->vdev_child[i]; 5424 5425 if (vc->vdev_path == NULL) { 5426 vc = zdb_vdev_lookup(vc, path); 5427 if (vc == NULL) 5428 continue; 5429 else 5430 return (vc); 5431 } 5432 5433 p = strrchr(vc->vdev_path, '/'); 5434 p = p ? p + 1 : vc->vdev_path; 5435 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 5436 5437 if (strcmp(vc->vdev_path, path) == 0) 5438 return (vc); 5439 if (strcmp(p, path) == 0) 5440 return (vc); 5441 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 5442 return (vc); 5443 } 5444 5445 return (NULL); 5446 } 5447 5448 /* ARGSUSED */ 5449 static int 5450 random_get_pseudo_bytes_cb(void *buf, size_t len, void *unused) 5451 { 5452 return (random_get_pseudo_bytes(buf, len)); 5453 } 5454 5455 /* 5456 * Read a block from a pool and print it out. The syntax of the 5457 * block descriptor is: 5458 * 5459 * pool:vdev_specifier:offset:size[:flags] 5460 * 5461 * pool - The name of the pool you wish to read from 5462 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 5463 * offset - offset, in hex, in bytes 5464 * size - Amount of data to read, in hex, in bytes 5465 * flags - A string of characters specifying options 5466 * b: Decode a blkptr at given offset within block 5467 * *c: Calculate and display checksums 5468 * d: Decompress data before dumping 5469 * e: Byteswap data before dumping 5470 * g: Display data as a gang block header 5471 * i: Display as an indirect block 5472 * p: Do I/O to physical offset 5473 * r: Dump raw data to stdout 5474 * 5475 * * = not yet implemented 5476 */ 5477 static void 5478 zdb_read_block(char *thing, spa_t *spa) 5479 { 5480 blkptr_t blk, *bp = &blk; 5481 dva_t *dva = bp->blk_dva; 5482 int flags = 0; 5483 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0; 5484 zio_t *zio; 5485 vdev_t *vd; 5486 abd_t *pabd; 5487 void *lbuf, *buf; 5488 const char *s, *vdev; 5489 char *p, *dup, *flagstr; 5490 int i, error; 5491 5492 dup = strdup(thing); 5493 s = strtok(dup, ":"); 5494 vdev = s ? s : ""; 5495 s = strtok(NULL, ":"); 5496 offset = strtoull(s ? s : "", NULL, 16); 5497 s = strtok(NULL, ":"); 5498 size = strtoull(s ? s : "", NULL, 16); 5499 s = strtok(NULL, ":"); 5500 if (s) 5501 flagstr = strdup(s); 5502 else 5503 flagstr = strdup(""); 5504 5505 s = NULL; 5506 if (size == 0) 5507 s = "size must not be zero"; 5508 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 5509 s = "size must be a multiple of sector size"; 5510 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 5511 s = "offset must be a multiple of sector size"; 5512 if (s) { 5513 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 5514 free(dup); 5515 return; 5516 } 5517 5518 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 5519 for (i = 0; flagstr[i]; i++) { 5520 int bit = flagbits[(uchar_t)flagstr[i]]; 5521 5522 if (bit == 0) { 5523 (void) printf("***Invalid flag: %c\n", 5524 flagstr[i]); 5525 continue; 5526 } 5527 flags |= bit; 5528 5529 /* If it's not something with an argument, keep going */ 5530 if ((bit & (ZDB_FLAG_CHECKSUM | 5531 ZDB_FLAG_PRINT_BLKPTR)) == 0) 5532 continue; 5533 5534 p = &flagstr[i + 1]; 5535 if (bit == ZDB_FLAG_PRINT_BLKPTR) 5536 blkptr_offset = strtoull(p, &p, 16); 5537 if (*p != ':' && *p != '\0') { 5538 (void) printf("***Invalid flag arg: '%s'\n", s); 5539 free(dup); 5540 return; 5541 } 5542 } 5543 } 5544 free(flagstr); 5545 5546 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 5547 if (vd == NULL) { 5548 (void) printf("***Invalid vdev: %s\n", vdev); 5549 free(dup); 5550 return; 5551 } else { 5552 if (vd->vdev_path) 5553 (void) fprintf(stderr, "Found vdev: %s\n", 5554 vd->vdev_path); 5555 else 5556 (void) fprintf(stderr, "Found vdev type: %s\n", 5557 vd->vdev_ops->vdev_op_type); 5558 } 5559 5560 psize = size; 5561 lsize = size; 5562 5563 pabd = abd_alloc_linear(SPA_MAXBLOCKSIZE, B_FALSE); 5564 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 5565 5566 BP_ZERO(bp); 5567 5568 DVA_SET_VDEV(&dva[0], vd->vdev_id); 5569 DVA_SET_OFFSET(&dva[0], offset); 5570 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH)); 5571 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize)); 5572 5573 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL); 5574 5575 BP_SET_LSIZE(bp, lsize); 5576 BP_SET_PSIZE(bp, psize); 5577 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF); 5578 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF); 5579 BP_SET_TYPE(bp, DMU_OT_NONE); 5580 BP_SET_LEVEL(bp, 0); 5581 BP_SET_DEDUP(bp, 0); 5582 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER); 5583 5584 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 5585 zio = zio_root(spa, NULL, NULL, 0); 5586 5587 if (vd == vd->vdev_top) { 5588 /* 5589 * Treat this as a normal block read. 5590 */ 5591 zio_nowait(zio_read(zio, spa, bp, pabd, psize, NULL, NULL, 5592 ZIO_PRIORITY_SYNC_READ, 5593 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL)); 5594 } else { 5595 /* 5596 * Treat this as a vdev child I/O. 5597 */ 5598 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pabd, 5599 psize, ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, 5600 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 5601 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | 5602 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW | ZIO_FLAG_OPTIONAL, 5603 NULL, NULL)); 5604 } 5605 5606 error = zio_wait(zio); 5607 spa_config_exit(spa, SCL_STATE, FTAG); 5608 5609 if (error) { 5610 (void) printf("Read of %s failed, error: %d\n", thing, error); 5611 goto out; 5612 } 5613 5614 if (flags & ZDB_FLAG_DECOMPRESS) { 5615 /* 5616 * We don't know how the data was compressed, so just try 5617 * every decompress function at every inflated blocksize. 5618 */ 5619 enum zio_compress c; 5620 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 5621 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 5622 5623 abd_copy_to_buf(pbuf2, pabd, psize); 5624 5625 VERIFY0(abd_iterate_func(pabd, psize, SPA_MAXBLOCKSIZE - psize, 5626 random_get_pseudo_bytes_cb, NULL)); 5627 5628 VERIFY0(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize, 5629 SPA_MAXBLOCKSIZE - psize)); 5630 5631 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize; 5632 lsize -= SPA_MINBLOCKSIZE) { 5633 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) { 5634 if (zio_decompress_data(c, pabd, 5635 lbuf, psize, lsize) == 0 && 5636 zio_decompress_data_buf(c, pbuf2, 5637 lbuf2, psize, lsize) == 0 && 5638 bcmp(lbuf, lbuf2, lsize) == 0) 5639 break; 5640 } 5641 if (c != ZIO_COMPRESS_FUNCTIONS) 5642 break; 5643 lsize -= SPA_MINBLOCKSIZE; 5644 } 5645 5646 umem_free(pbuf2, SPA_MAXBLOCKSIZE); 5647 umem_free(lbuf2, SPA_MAXBLOCKSIZE); 5648 5649 if (lsize <= psize) { 5650 (void) printf("Decompress of %s failed\n", thing); 5651 goto out; 5652 } 5653 buf = lbuf; 5654 size = lsize; 5655 } else { 5656 buf = abd_to_buf(pabd); 5657 size = psize; 5658 } 5659 5660 if (flags & ZDB_FLAG_PRINT_BLKPTR) 5661 zdb_print_blkptr((blkptr_t *)(void *) 5662 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 5663 else if (flags & ZDB_FLAG_RAW) 5664 zdb_dump_block_raw(buf, size, flags); 5665 else if (flags & ZDB_FLAG_INDIRECT) 5666 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 5667 flags); 5668 else if (flags & ZDB_FLAG_GBH) 5669 zdb_dump_gbh(buf, flags); 5670 else 5671 zdb_dump_block(thing, buf, size, flags); 5672 5673 out: 5674 abd_free(pabd); 5675 umem_free(lbuf, SPA_MAXBLOCKSIZE); 5676 free(dup); 5677 } 5678 5679 static void 5680 zdb_embedded_block(char *thing) 5681 { 5682 blkptr_t bp; 5683 unsigned long long *words = (void *)&bp; 5684 char *buf; 5685 int err; 5686 5687 bzero(&bp, sizeof (bp)); 5688 err = sscanf(thing, "%llx:%llx:%llx:%llx:%llx:%llx:%llx:%llx:" 5689 "%llx:%llx:%llx:%llx:%llx:%llx:%llx:%llx", 5690 words + 0, words + 1, words + 2, words + 3, 5691 words + 4, words + 5, words + 6, words + 7, 5692 words + 8, words + 9, words + 10, words + 11, 5693 words + 12, words + 13, words + 14, words + 15); 5694 if (err != 16) { 5695 (void) fprintf(stderr, "invalid input format\n"); 5696 exit(1); 5697 } 5698 ASSERT3U(BPE_GET_LSIZE(&bp), <=, SPA_MAXBLOCKSIZE); 5699 buf = malloc(SPA_MAXBLOCKSIZE); 5700 if (buf == NULL) { 5701 (void) fprintf(stderr, "out of memory\n"); 5702 exit(1); 5703 } 5704 err = decode_embedded_bp(&bp, buf, BPE_GET_LSIZE(&bp)); 5705 if (err != 0) { 5706 (void) fprintf(stderr, "decode failed: %u\n", err); 5707 exit(1); 5708 } 5709 zdb_dump_block_raw(buf, BPE_GET_LSIZE(&bp), 0); 5710 free(buf); 5711 } 5712 5713 int 5714 main(int argc, char **argv) 5715 { 5716 int c; 5717 struct rlimit rl = { 1024, 1024 }; 5718 spa_t *spa = NULL; 5719 objset_t *os = NULL; 5720 int dump_all = 1; 5721 int verbose = 0; 5722 int error = 0; 5723 char **searchdirs = NULL; 5724 int nsearch = 0; 5725 char *target, *target_pool; 5726 nvlist_t *policy = NULL; 5727 uint64_t max_txg = UINT64_MAX; 5728 int flags = ZFS_IMPORT_MISSING_LOG; 5729 int rewind = ZPOOL_NEVER_REWIND; 5730 char *spa_config_path_env; 5731 boolean_t target_is_spa = B_TRUE; 5732 nvlist_t *cfg = NULL; 5733 5734 (void) setrlimit(RLIMIT_NOFILE, &rl); 5735 (void) enable_extended_FILE_stdio(-1, -1); 5736 5737 dprintf_setup(&argc, argv); 5738 5739 /* 5740 * If there is an environment variable SPA_CONFIG_PATH it overrides 5741 * default spa_config_path setting. If -U flag is specified it will 5742 * override this environment variable settings once again. 5743 */ 5744 spa_config_path_env = getenv("SPA_CONFIG_PATH"); 5745 if (spa_config_path_env != NULL) 5746 spa_config_path = spa_config_path_env; 5747 5748 while ((c = getopt(argc, argv, 5749 "AbcCdDeEFGhiI:klLmMo:Op:PqRsSt:uU:vVx:X")) != -1) { 5750 switch (c) { 5751 case 'b': 5752 case 'c': 5753 case 'C': 5754 case 'd': 5755 case 'D': 5756 case 'E': 5757 case 'G': 5758 case 'h': 5759 case 'i': 5760 case 'l': 5761 case 'm': 5762 case 'M': 5763 case 'O': 5764 case 'R': 5765 case 's': 5766 case 'S': 5767 case 'u': 5768 dump_opt[c]++; 5769 dump_all = 0; 5770 break; 5771 case 'A': 5772 case 'e': 5773 case 'F': 5774 case 'k': 5775 case 'L': 5776 case 'P': 5777 case 'q': 5778 case 'X': 5779 dump_opt[c]++; 5780 break; 5781 /* NB: Sort single match options below. */ 5782 case 'I': 5783 max_inflight = strtoull(optarg, NULL, 0); 5784 if (max_inflight == 0) { 5785 (void) fprintf(stderr, "maximum number " 5786 "of inflight I/Os must be greater " 5787 "than 0\n"); 5788 usage(); 5789 } 5790 break; 5791 case 'o': 5792 error = set_global_var(optarg); 5793 if (error != 0) 5794 usage(); 5795 break; 5796 case 'p': 5797 if (searchdirs == NULL) { 5798 searchdirs = umem_alloc(sizeof (char *), 5799 UMEM_NOFAIL); 5800 } else { 5801 char **tmp = umem_alloc((nsearch + 1) * 5802 sizeof (char *), UMEM_NOFAIL); 5803 bcopy(searchdirs, tmp, nsearch * 5804 sizeof (char *)); 5805 umem_free(searchdirs, 5806 nsearch * sizeof (char *)); 5807 searchdirs = tmp; 5808 } 5809 searchdirs[nsearch++] = optarg; 5810 break; 5811 case 't': 5812 max_txg = strtoull(optarg, NULL, 0); 5813 if (max_txg < TXG_INITIAL) { 5814 (void) fprintf(stderr, "incorrect txg " 5815 "specified: %s\n", optarg); 5816 usage(); 5817 } 5818 break; 5819 case 'U': 5820 spa_config_path = optarg; 5821 if (spa_config_path[0] != '/') { 5822 (void) fprintf(stderr, 5823 "cachefile must be an absolute path " 5824 "(i.e. start with a slash)\n"); 5825 usage(); 5826 } 5827 break; 5828 case 'v': 5829 verbose++; 5830 break; 5831 case 'V': 5832 flags = ZFS_IMPORT_VERBATIM; 5833 break; 5834 case 'x': 5835 vn_dumpdir = optarg; 5836 break; 5837 default: 5838 usage(); 5839 break; 5840 } 5841 } 5842 5843 if (!dump_opt['e'] && searchdirs != NULL) { 5844 (void) fprintf(stderr, "-p option requires use of -e\n"); 5845 usage(); 5846 } 5847 5848 /* 5849 * ZDB does not typically re-read blocks; therefore limit the ARC 5850 * to 256 MB, which can be used entirely for metadata. 5851 */ 5852 zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024; 5853 5854 /* 5855 * "zdb -c" uses checksum-verifying scrub i/os which are async reads. 5856 * "zdb -b" uses traversal prefetch which uses async reads. 5857 * For good performance, let several of them be active at once. 5858 */ 5859 zfs_vdev_async_read_max_active = 10; 5860 5861 /* 5862 * Disable reference tracking for better performance. 5863 */ 5864 reference_tracking_enable = B_FALSE; 5865 5866 /* 5867 * Do not fail spa_load when spa_load_verify fails. This is needed 5868 * to load non-idle pools. 5869 */ 5870 spa_load_verify_dryrun = B_TRUE; 5871 5872 kernel_init(FREAD); 5873 g_zfs = libzfs_init(); 5874 ASSERT(g_zfs != NULL); 5875 5876 if (dump_all) 5877 verbose = MAX(verbose, 1); 5878 5879 for (c = 0; c < 256; c++) { 5880 if (dump_all && strchr("AeEFklLOPRSX", c) == NULL) 5881 dump_opt[c] = 1; 5882 if (dump_opt[c]) 5883 dump_opt[c] += verbose; 5884 } 5885 5886 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2); 5887 zfs_recover = (dump_opt['A'] > 1); 5888 5889 argc -= optind; 5890 argv += optind; 5891 5892 if (argc < 2 && dump_opt['R']) 5893 usage(); 5894 5895 if (dump_opt['E']) { 5896 if (argc != 1) 5897 usage(); 5898 zdb_embedded_block(argv[0]); 5899 return (0); 5900 } 5901 5902 if (argc < 1) { 5903 if (!dump_opt['e'] && dump_opt['C']) { 5904 dump_cachefile(spa_config_path); 5905 return (0); 5906 } 5907 usage(); 5908 } 5909 5910 if (dump_opt['l']) 5911 return (dump_label(argv[0])); 5912 5913 if (dump_opt['O']) { 5914 if (argc != 2) 5915 usage(); 5916 dump_opt['v'] = verbose + 3; 5917 return (dump_path(argv[0], argv[1])); 5918 } 5919 5920 if (dump_opt['X'] || dump_opt['F']) 5921 rewind = ZPOOL_DO_REWIND | 5922 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0); 5923 5924 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 || 5925 nvlist_add_uint64(policy, ZPOOL_LOAD_REQUEST_TXG, max_txg) != 0 || 5926 nvlist_add_uint32(policy, ZPOOL_LOAD_REWIND_POLICY, rewind) != 0) 5927 fatal("internal error: %s", strerror(ENOMEM)); 5928 5929 error = 0; 5930 target = argv[0]; 5931 5932 if (strpbrk(target, "/@") != NULL) { 5933 size_t targetlen; 5934 5935 target_pool = strdup(target); 5936 *strpbrk(target_pool, "/@") = '\0'; 5937 5938 target_is_spa = B_FALSE; 5939 targetlen = strlen(target); 5940 if (targetlen && target[targetlen - 1] == '/') 5941 target[targetlen - 1] = '\0'; 5942 } else { 5943 target_pool = target; 5944 } 5945 5946 if (dump_opt['e']) { 5947 importargs_t args = { 0 }; 5948 5949 args.paths = nsearch; 5950 args.path = searchdirs; 5951 args.can_be_active = B_TRUE; 5952 5953 error = zpool_tryimport(g_zfs, target_pool, &cfg, &args); 5954 5955 if (error == 0) { 5956 5957 if (nvlist_add_nvlist(cfg, 5958 ZPOOL_LOAD_POLICY, policy) != 0) { 5959 fatal("can't open '%s': %s", 5960 target, strerror(ENOMEM)); 5961 } 5962 5963 if (dump_opt['C'] > 1) { 5964 (void) printf("\nConfiguration for import:\n"); 5965 dump_nvlist(cfg, 8); 5966 } 5967 5968 /* 5969 * Disable the activity check to allow examination of 5970 * active pools. 5971 */ 5972 error = spa_import(target_pool, cfg, NULL, 5973 flags | ZFS_IMPORT_SKIP_MMP); 5974 } 5975 } 5976 5977 char *checkpoint_pool = NULL; 5978 char *checkpoint_target = NULL; 5979 if (dump_opt['k']) { 5980 checkpoint_pool = import_checkpointed_state(target, cfg, 5981 &checkpoint_target); 5982 5983 if (checkpoint_target != NULL) 5984 target = checkpoint_target; 5985 5986 } 5987 5988 if (error == 0) { 5989 if (dump_opt['k'] && (target_is_spa || dump_opt['R'])) { 5990 ASSERT(checkpoint_pool != NULL); 5991 ASSERT(checkpoint_target == NULL); 5992 5993 error = spa_open(checkpoint_pool, &spa, FTAG); 5994 if (error != 0) { 5995 fatal("Tried to open pool \"%s\" but " 5996 "spa_open() failed with error %d\n", 5997 checkpoint_pool, error); 5998 } 5999 6000 } else if (target_is_spa || dump_opt['R']) { 6001 zdb_set_skip_mmp(target); 6002 error = spa_open_rewind(target, &spa, FTAG, policy, 6003 NULL); 6004 if (error) { 6005 /* 6006 * If we're missing the log device then 6007 * try opening the pool after clearing the 6008 * log state. 6009 */ 6010 mutex_enter(&spa_namespace_lock); 6011 if ((spa = spa_lookup(target)) != NULL && 6012 spa->spa_log_state == SPA_LOG_MISSING) { 6013 spa->spa_log_state = SPA_LOG_CLEAR; 6014 error = 0; 6015 } 6016 mutex_exit(&spa_namespace_lock); 6017 6018 if (!error) { 6019 error = spa_open_rewind(target, &spa, 6020 FTAG, policy, NULL); 6021 } 6022 } 6023 } else { 6024 zdb_set_skip_mmp(target); 6025 error = open_objset(target, DMU_OST_ANY, FTAG, &os); 6026 } 6027 } 6028 nvlist_free(policy); 6029 6030 if (error) 6031 fatal("can't open '%s': %s", target, strerror(error)); 6032 6033 argv++; 6034 argc--; 6035 if (!dump_opt['R']) { 6036 if (argc > 0) { 6037 zopt_objects = argc; 6038 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 6039 for (unsigned i = 0; i < zopt_objects; i++) { 6040 errno = 0; 6041 zopt_object[i] = strtoull(argv[i], NULL, 0); 6042 if (zopt_object[i] == 0 && errno != 0) 6043 fatal("bad number %s: %s", 6044 argv[i], strerror(errno)); 6045 } 6046 } 6047 if (os != NULL) { 6048 dump_dir(os); 6049 } else if (zopt_objects > 0 && !dump_opt['m']) { 6050 dump_dir(spa->spa_meta_objset); 6051 } else { 6052 dump_zpool(spa); 6053 } 6054 } else { 6055 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 6056 flagbits['c'] = ZDB_FLAG_CHECKSUM; 6057 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 6058 flagbits['e'] = ZDB_FLAG_BSWAP; 6059 flagbits['g'] = ZDB_FLAG_GBH; 6060 flagbits['i'] = ZDB_FLAG_INDIRECT; 6061 flagbits['p'] = ZDB_FLAG_PHYS; 6062 flagbits['r'] = ZDB_FLAG_RAW; 6063 6064 for (int i = 0; i < argc; i++) 6065 zdb_read_block(argv[i], spa); 6066 } 6067 6068 if (dump_opt['k']) { 6069 free(checkpoint_pool); 6070 if (!target_is_spa) 6071 free(checkpoint_target); 6072 } 6073 6074 if (os != NULL) 6075 close_objset(os, FTAG); 6076 else 6077 spa_close(spa, FTAG); 6078 6079 fuid_table_destroy(); 6080 6081 dump_debug_buffer(); 6082 6083 libzfs_fini(g_zfs); 6084 kernel_fini(); 6085 6086 return (error); 6087 } 6088