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