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, 2016 by Delphix. All rights reserved. 25 * Copyright (c) 2014 Integros [integros.com] 26 */ 27 28 #include <stdio.h> 29 #include <unistd.h> 30 #include <stdio_ext.h> 31 #include <stdlib.h> 32 #include <ctype.h> 33 #include <sys/zfs_context.h> 34 #include <sys/spa.h> 35 #include <sys/spa_impl.h> 36 #include <sys/dmu.h> 37 #include <sys/zap.h> 38 #include <sys/fs/zfs.h> 39 #include <sys/zfs_znode.h> 40 #include <sys/zfs_sa.h> 41 #include <sys/sa.h> 42 #include <sys/sa_impl.h> 43 #include <sys/vdev.h> 44 #include <sys/vdev_impl.h> 45 #include <sys/metaslab_impl.h> 46 #include <sys/dmu_objset.h> 47 #include <sys/dsl_dir.h> 48 #include <sys/dsl_dataset.h> 49 #include <sys/dsl_pool.h> 50 #include <sys/dbuf.h> 51 #include <sys/zil.h> 52 #include <sys/zil_impl.h> 53 #include <sys/stat.h> 54 #include <sys/resource.h> 55 #include <sys/dmu_traverse.h> 56 #include <sys/zio_checksum.h> 57 #include <sys/zio_compress.h> 58 #include <sys/zfs_fuid.h> 59 #include <sys/arc.h> 60 #include <sys/ddt.h> 61 #include <sys/zfeature.h> 62 #include <zfs_comutil.h> 63 #undef verify 64 #include <libzfs.h> 65 66 #define ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ? \ 67 zio_compress_table[(idx)].ci_name : "UNKNOWN") 68 #define ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ? \ 69 zio_checksum_table[(idx)].ci_name : "UNKNOWN") 70 #define ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ? \ 71 dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ? \ 72 dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN") 73 #define ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) : \ 74 (((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ? \ 75 DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES)) 76 77 #ifndef lint 78 extern int reference_tracking_enable; 79 extern boolean_t zfs_recover; 80 extern uint64_t zfs_arc_max, zfs_arc_meta_limit; 81 extern int zfs_vdev_async_read_max_active; 82 #else 83 int reference_tracking_enable; 84 boolean_t zfs_recover; 85 uint64_t zfs_arc_max, zfs_arc_meta_limit; 86 int zfs_vdev_async_read_max_active; 87 #endif 88 89 const char cmdname[] = "zdb"; 90 uint8_t dump_opt[256]; 91 92 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); 93 94 extern void dump_intent_log(zilog_t *); 95 uint64_t *zopt_object = NULL; 96 int zopt_objects = 0; 97 libzfs_handle_t *g_zfs; 98 uint64_t max_inflight = 1000; 99 100 static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *); 101 102 /* 103 * These libumem hooks provide a reasonable set of defaults for the allocator's 104 * debugging facilities. 105 */ 106 const char * 107 _umem_debug_init() 108 { 109 return ("default,verbose"); /* $UMEM_DEBUG setting */ 110 } 111 112 const char * 113 _umem_logging_init(void) 114 { 115 return ("fail,contents"); /* $UMEM_LOGGING setting */ 116 } 117 118 static void 119 usage(void) 120 { 121 (void) fprintf(stderr, 122 "Usage: %s [-CumMdibcsDvhLXFPAG] [-t txg] [-e [-p path...]] " 123 "[-U config] [-I inflight I/Os] [-x dumpdir] [-o var=value] " 124 "poolname [object...]\n" 125 " %s [-divPA] [-e -p path...] [-U config] dataset " 126 "[object...]\n" 127 " %s -mM [-LXFPA] [-t txg] [-e [-p path...]] [-U config] " 128 "poolname [vdev [metaslab...]]\n" 129 " %s -R [-A] [-e [-p path...]] poolname " 130 "vdev:offset:size[:flags]\n" 131 " %s -S [-PA] [-e [-p path...]] [-U config] poolname\n" 132 " %s -l [-uA] device\n" 133 " %s -C [-A] [-U config]\n\n", 134 cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname); 135 136 (void) fprintf(stderr, " Dataset name must include at least one " 137 "separator character '/' or '@'\n"); 138 (void) fprintf(stderr, " If dataset name is specified, only that " 139 "dataset is dumped\n"); 140 (void) fprintf(stderr, " If object numbers are specified, only " 141 "those objects are dumped\n\n"); 142 (void) fprintf(stderr, " Options to control amount of output:\n"); 143 (void) fprintf(stderr, " -u uberblock\n"); 144 (void) fprintf(stderr, " -d dataset(s)\n"); 145 (void) fprintf(stderr, " -i intent logs\n"); 146 (void) fprintf(stderr, " -C config (or cachefile if alone)\n"); 147 (void) fprintf(stderr, " -h pool history\n"); 148 (void) fprintf(stderr, " -b block statistics\n"); 149 (void) fprintf(stderr, " -m metaslabs\n"); 150 (void) fprintf(stderr, " -M metaslab groups\n"); 151 (void) fprintf(stderr, " -c checksum all metadata (twice for " 152 "all data) blocks\n"); 153 (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); 154 (void) fprintf(stderr, " -D dedup statistics\n"); 155 (void) fprintf(stderr, " -S simulate dedup to measure effect\n"); 156 (void) fprintf(stderr, " -v verbose (applies to all others)\n"); 157 (void) fprintf(stderr, " -l dump label contents\n"); 158 (void) fprintf(stderr, " -L disable leak tracking (do not " 159 "load spacemaps)\n"); 160 (void) fprintf(stderr, " -R read and display block from a " 161 "device\n\n"); 162 (void) fprintf(stderr, " Below options are intended for use " 163 "with other options:\n"); 164 (void) fprintf(stderr, " -A ignore assertions (-A), enable " 165 "panic recovery (-AA) or both (-AAA)\n"); 166 (void) fprintf(stderr, " -F attempt automatic rewind within " 167 "safe range of transaction groups\n"); 168 (void) fprintf(stderr, " -U <cachefile_path> -- use alternate " 169 "cachefile\n"); 170 (void) fprintf(stderr, " -X attempt extreme rewind (does not " 171 "work with dataset)\n"); 172 (void) fprintf(stderr, " -e pool is exported/destroyed/" 173 "has altroot/not in a cachefile\n"); 174 (void) fprintf(stderr, " -p <path> -- use one or more with " 175 "-e to specify path to vdev dir\n"); 176 (void) fprintf(stderr, " -x <dumpdir> -- " 177 "dump all read blocks into specified directory\n"); 178 (void) fprintf(stderr, " -P print numbers in parseable form\n"); 179 (void) fprintf(stderr, " -t <txg> -- highest txg to use when " 180 "searching for uberblocks\n"); 181 (void) fprintf(stderr, " -I <number of inflight I/Os> -- " 182 "specify the maximum number of " 183 "checksumming I/Os [default is 200]\n"); 184 (void) fprintf(stderr, " -G dump zfs_dbgmsg buffer before " 185 "exiting\n"); 186 (void) fprintf(stderr, " -o <variable>=<value> set global " 187 "variable to an unsigned 32-bit integer value\n"); 188 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " 189 "to make only that option verbose\n"); 190 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); 191 exit(1); 192 } 193 194 static void 195 dump_debug_buffer() 196 { 197 if (dump_opt['G']) { 198 (void) printf("\n"); 199 zfs_dbgmsg_print("zdb"); 200 } 201 } 202 203 /* 204 * Called for usage errors that are discovered after a call to spa_open(), 205 * dmu_bonus_hold(), or pool_match(). abort() is called for other errors. 206 */ 207 208 static void 209 fatal(const char *fmt, ...) 210 { 211 va_list ap; 212 213 va_start(ap, fmt); 214 (void) fprintf(stderr, "%s: ", cmdname); 215 (void) vfprintf(stderr, fmt, ap); 216 va_end(ap); 217 (void) fprintf(stderr, "\n"); 218 219 dump_debug_buffer(); 220 221 exit(1); 222 } 223 224 /* ARGSUSED */ 225 static void 226 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) 227 { 228 nvlist_t *nv; 229 size_t nvsize = *(uint64_t *)data; 230 char *packed = umem_alloc(nvsize, UMEM_NOFAIL); 231 232 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH)); 233 234 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); 235 236 umem_free(packed, nvsize); 237 238 dump_nvlist(nv, 8); 239 240 nvlist_free(nv); 241 } 242 243 /* ARGSUSED */ 244 static void 245 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size) 246 { 247 spa_history_phys_t *shp = data; 248 249 if (shp == NULL) 250 return; 251 252 (void) printf("\t\tpool_create_len = %llu\n", 253 (u_longlong_t)shp->sh_pool_create_len); 254 (void) printf("\t\tphys_max_off = %llu\n", 255 (u_longlong_t)shp->sh_phys_max_off); 256 (void) printf("\t\tbof = %llu\n", 257 (u_longlong_t)shp->sh_bof); 258 (void) printf("\t\teof = %llu\n", 259 (u_longlong_t)shp->sh_eof); 260 (void) printf("\t\trecords_lost = %llu\n", 261 (u_longlong_t)shp->sh_records_lost); 262 } 263 264 static void 265 zdb_nicenum(uint64_t num, char *buf) 266 { 267 if (dump_opt['P']) 268 (void) sprintf(buf, "%llu", (longlong_t)num); 269 else 270 nicenum(num, buf); 271 } 272 273 const char histo_stars[] = "****************************************"; 274 const int histo_width = sizeof (histo_stars) - 1; 275 276 static void 277 dump_histogram(const uint64_t *histo, int size, int offset) 278 { 279 int i; 280 int minidx = size - 1; 281 int maxidx = 0; 282 uint64_t max = 0; 283 284 for (i = 0; i < size; i++) { 285 if (histo[i] > max) 286 max = histo[i]; 287 if (histo[i] > 0 && i > maxidx) 288 maxidx = i; 289 if (histo[i] > 0 && i < minidx) 290 minidx = i; 291 } 292 293 if (max < histo_width) 294 max = histo_width; 295 296 for (i = minidx; i <= maxidx; i++) { 297 (void) printf("\t\t\t%3u: %6llu %s\n", 298 i + offset, (u_longlong_t)histo[i], 299 &histo_stars[(max - histo[i]) * histo_width / max]); 300 } 301 } 302 303 static void 304 dump_zap_stats(objset_t *os, uint64_t object) 305 { 306 int error; 307 zap_stats_t zs; 308 309 error = zap_get_stats(os, object, &zs); 310 if (error) 311 return; 312 313 if (zs.zs_ptrtbl_len == 0) { 314 ASSERT(zs.zs_num_blocks == 1); 315 (void) printf("\tmicrozap: %llu bytes, %llu entries\n", 316 (u_longlong_t)zs.zs_blocksize, 317 (u_longlong_t)zs.zs_num_entries); 318 return; 319 } 320 321 (void) printf("\tFat ZAP stats:\n"); 322 323 (void) printf("\t\tPointer table:\n"); 324 (void) printf("\t\t\t%llu elements\n", 325 (u_longlong_t)zs.zs_ptrtbl_len); 326 (void) printf("\t\t\tzt_blk: %llu\n", 327 (u_longlong_t)zs.zs_ptrtbl_zt_blk); 328 (void) printf("\t\t\tzt_numblks: %llu\n", 329 (u_longlong_t)zs.zs_ptrtbl_zt_numblks); 330 (void) printf("\t\t\tzt_shift: %llu\n", 331 (u_longlong_t)zs.zs_ptrtbl_zt_shift); 332 (void) printf("\t\t\tzt_blks_copied: %llu\n", 333 (u_longlong_t)zs.zs_ptrtbl_blks_copied); 334 (void) printf("\t\t\tzt_nextblk: %llu\n", 335 (u_longlong_t)zs.zs_ptrtbl_nextblk); 336 337 (void) printf("\t\tZAP entries: %llu\n", 338 (u_longlong_t)zs.zs_num_entries); 339 (void) printf("\t\tLeaf blocks: %llu\n", 340 (u_longlong_t)zs.zs_num_leafs); 341 (void) printf("\t\tTotal blocks: %llu\n", 342 (u_longlong_t)zs.zs_num_blocks); 343 (void) printf("\t\tzap_block_type: 0x%llx\n", 344 (u_longlong_t)zs.zs_block_type); 345 (void) printf("\t\tzap_magic: 0x%llx\n", 346 (u_longlong_t)zs.zs_magic); 347 (void) printf("\t\tzap_salt: 0x%llx\n", 348 (u_longlong_t)zs.zs_salt); 349 350 (void) printf("\t\tLeafs with 2^n pointers:\n"); 351 dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0); 352 353 (void) printf("\t\tBlocks with n*5 entries:\n"); 354 dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0); 355 356 (void) printf("\t\tBlocks n/10 full:\n"); 357 dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0); 358 359 (void) printf("\t\tEntries with n chunks:\n"); 360 dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0); 361 362 (void) printf("\t\tBuckets with n entries:\n"); 363 dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0); 364 } 365 366 /*ARGSUSED*/ 367 static void 368 dump_none(objset_t *os, uint64_t object, void *data, size_t size) 369 { 370 } 371 372 /*ARGSUSED*/ 373 static void 374 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size) 375 { 376 (void) printf("\tUNKNOWN OBJECT TYPE\n"); 377 } 378 379 /*ARGSUSED*/ 380 void 381 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) 382 { 383 } 384 385 /*ARGSUSED*/ 386 static void 387 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) 388 { 389 } 390 391 /*ARGSUSED*/ 392 static void 393 dump_zap(objset_t *os, uint64_t object, void *data, size_t size) 394 { 395 zap_cursor_t zc; 396 zap_attribute_t attr; 397 void *prop; 398 int i; 399 400 dump_zap_stats(os, object); 401 (void) printf("\n"); 402 403 for (zap_cursor_init(&zc, os, object); 404 zap_cursor_retrieve(&zc, &attr) == 0; 405 zap_cursor_advance(&zc)) { 406 (void) printf("\t\t%s = ", attr.za_name); 407 if (attr.za_num_integers == 0) { 408 (void) printf("\n"); 409 continue; 410 } 411 prop = umem_zalloc(attr.za_num_integers * 412 attr.za_integer_length, UMEM_NOFAIL); 413 (void) zap_lookup(os, object, attr.za_name, 414 attr.za_integer_length, attr.za_num_integers, prop); 415 if (attr.za_integer_length == 1) { 416 (void) printf("%s", (char *)prop); 417 } else { 418 for (i = 0; i < attr.za_num_integers; i++) { 419 switch (attr.za_integer_length) { 420 case 2: 421 (void) printf("%u ", 422 ((uint16_t *)prop)[i]); 423 break; 424 case 4: 425 (void) printf("%u ", 426 ((uint32_t *)prop)[i]); 427 break; 428 case 8: 429 (void) printf("%lld ", 430 (u_longlong_t)((int64_t *)prop)[i]); 431 break; 432 } 433 } 434 } 435 (void) printf("\n"); 436 umem_free(prop, attr.za_num_integers * attr.za_integer_length); 437 } 438 zap_cursor_fini(&zc); 439 } 440 441 static void 442 dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size) 443 { 444 bpobj_phys_t *bpop = data; 445 char bytes[32], comp[32], uncomp[32]; 446 447 if (bpop == NULL) 448 return; 449 450 zdb_nicenum(bpop->bpo_bytes, bytes); 451 zdb_nicenum(bpop->bpo_comp, comp); 452 zdb_nicenum(bpop->bpo_uncomp, uncomp); 453 454 (void) printf("\t\tnum_blkptrs = %llu\n", 455 (u_longlong_t)bpop->bpo_num_blkptrs); 456 (void) printf("\t\tbytes = %s\n", bytes); 457 if (size >= BPOBJ_SIZE_V1) { 458 (void) printf("\t\tcomp = %s\n", comp); 459 (void) printf("\t\tuncomp = %s\n", uncomp); 460 } 461 if (size >= sizeof (*bpop)) { 462 (void) printf("\t\tsubobjs = %llu\n", 463 (u_longlong_t)bpop->bpo_subobjs); 464 (void) printf("\t\tnum_subobjs = %llu\n", 465 (u_longlong_t)bpop->bpo_num_subobjs); 466 } 467 468 if (dump_opt['d'] < 5) 469 return; 470 471 for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) { 472 char blkbuf[BP_SPRINTF_LEN]; 473 blkptr_t bp; 474 475 int err = dmu_read(os, object, 476 i * sizeof (bp), sizeof (bp), &bp, 0); 477 if (err != 0) { 478 (void) printf("got error %u from dmu_read\n", err); 479 break; 480 } 481 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp); 482 (void) printf("\t%s\n", blkbuf); 483 } 484 } 485 486 /* ARGSUSED */ 487 static void 488 dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size) 489 { 490 dmu_object_info_t doi; 491 492 VERIFY0(dmu_object_info(os, object, &doi)); 493 uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP); 494 495 int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0); 496 if (err != 0) { 497 (void) printf("got error %u from dmu_read\n", err); 498 kmem_free(subobjs, doi.doi_max_offset); 499 return; 500 } 501 502 int64_t last_nonzero = -1; 503 for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) { 504 if (subobjs[i] != 0) 505 last_nonzero = i; 506 } 507 508 for (int64_t i = 0; i <= last_nonzero; i++) { 509 (void) printf("\t%llu\n", (longlong_t)subobjs[i]); 510 } 511 kmem_free(subobjs, doi.doi_max_offset); 512 } 513 514 /*ARGSUSED*/ 515 static void 516 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size) 517 { 518 dump_zap_stats(os, object); 519 /* contents are printed elsewhere, properly decoded */ 520 } 521 522 /*ARGSUSED*/ 523 static void 524 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size) 525 { 526 zap_cursor_t zc; 527 zap_attribute_t attr; 528 529 dump_zap_stats(os, object); 530 (void) printf("\n"); 531 532 for (zap_cursor_init(&zc, os, object); 533 zap_cursor_retrieve(&zc, &attr) == 0; 534 zap_cursor_advance(&zc)) { 535 (void) printf("\t\t%s = ", attr.za_name); 536 if (attr.za_num_integers == 0) { 537 (void) printf("\n"); 538 continue; 539 } 540 (void) printf(" %llx : [%d:%d:%d]\n", 541 (u_longlong_t)attr.za_first_integer, 542 (int)ATTR_LENGTH(attr.za_first_integer), 543 (int)ATTR_BSWAP(attr.za_first_integer), 544 (int)ATTR_NUM(attr.za_first_integer)); 545 } 546 zap_cursor_fini(&zc); 547 } 548 549 /*ARGSUSED*/ 550 static void 551 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size) 552 { 553 zap_cursor_t zc; 554 zap_attribute_t attr; 555 uint16_t *layout_attrs; 556 int i; 557 558 dump_zap_stats(os, object); 559 (void) printf("\n"); 560 561 for (zap_cursor_init(&zc, os, object); 562 zap_cursor_retrieve(&zc, &attr) == 0; 563 zap_cursor_advance(&zc)) { 564 (void) printf("\t\t%s = [", attr.za_name); 565 if (attr.za_num_integers == 0) { 566 (void) printf("\n"); 567 continue; 568 } 569 570 VERIFY(attr.za_integer_length == 2); 571 layout_attrs = umem_zalloc(attr.za_num_integers * 572 attr.za_integer_length, UMEM_NOFAIL); 573 574 VERIFY(zap_lookup(os, object, attr.za_name, 575 attr.za_integer_length, 576 attr.za_num_integers, layout_attrs) == 0); 577 578 for (i = 0; i != attr.za_num_integers; i++) 579 (void) printf(" %d ", (int)layout_attrs[i]); 580 (void) printf("]\n"); 581 umem_free(layout_attrs, 582 attr.za_num_integers * attr.za_integer_length); 583 } 584 zap_cursor_fini(&zc); 585 } 586 587 /*ARGSUSED*/ 588 static void 589 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size) 590 { 591 zap_cursor_t zc; 592 zap_attribute_t attr; 593 const char *typenames[] = { 594 /* 0 */ "not specified", 595 /* 1 */ "FIFO", 596 /* 2 */ "Character Device", 597 /* 3 */ "3 (invalid)", 598 /* 4 */ "Directory", 599 /* 5 */ "5 (invalid)", 600 /* 6 */ "Block Device", 601 /* 7 */ "7 (invalid)", 602 /* 8 */ "Regular File", 603 /* 9 */ "9 (invalid)", 604 /* 10 */ "Symbolic Link", 605 /* 11 */ "11 (invalid)", 606 /* 12 */ "Socket", 607 /* 13 */ "Door", 608 /* 14 */ "Event Port", 609 /* 15 */ "15 (invalid)", 610 }; 611 612 dump_zap_stats(os, object); 613 (void) printf("\n"); 614 615 for (zap_cursor_init(&zc, os, object); 616 zap_cursor_retrieve(&zc, &attr) == 0; 617 zap_cursor_advance(&zc)) { 618 (void) printf("\t\t%s = %lld (type: %s)\n", 619 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer), 620 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]); 621 } 622 zap_cursor_fini(&zc); 623 } 624 625 int 626 get_dtl_refcount(vdev_t *vd) 627 { 628 int refcount = 0; 629 630 if (vd->vdev_ops->vdev_op_leaf) { 631 space_map_t *sm = vd->vdev_dtl_sm; 632 633 if (sm != NULL && 634 sm->sm_dbuf->db_size == sizeof (space_map_phys_t)) 635 return (1); 636 return (0); 637 } 638 639 for (int c = 0; c < vd->vdev_children; c++) 640 refcount += get_dtl_refcount(vd->vdev_child[c]); 641 return (refcount); 642 } 643 644 int 645 get_metaslab_refcount(vdev_t *vd) 646 { 647 int refcount = 0; 648 649 if (vd->vdev_top == vd && !vd->vdev_removing) { 650 for (int m = 0; m < vd->vdev_ms_count; m++) { 651 space_map_t *sm = vd->vdev_ms[m]->ms_sm; 652 653 if (sm != NULL && 654 sm->sm_dbuf->db_size == sizeof (space_map_phys_t)) 655 refcount++; 656 } 657 } 658 for (int c = 0; c < vd->vdev_children; c++) 659 refcount += get_metaslab_refcount(vd->vdev_child[c]); 660 661 return (refcount); 662 } 663 664 static int 665 verify_spacemap_refcounts(spa_t *spa) 666 { 667 uint64_t expected_refcount = 0; 668 uint64_t actual_refcount; 669 670 (void) feature_get_refcount(spa, 671 &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM], 672 &expected_refcount); 673 actual_refcount = get_dtl_refcount(spa->spa_root_vdev); 674 actual_refcount += get_metaslab_refcount(spa->spa_root_vdev); 675 676 if (expected_refcount != actual_refcount) { 677 (void) printf("space map refcount mismatch: expected %lld != " 678 "actual %lld\n", 679 (longlong_t)expected_refcount, 680 (longlong_t)actual_refcount); 681 return (2); 682 } 683 return (0); 684 } 685 686 static void 687 dump_spacemap(objset_t *os, space_map_t *sm) 688 { 689 uint64_t alloc, offset, entry; 690 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID", 691 "INVALID", "INVALID", "INVALID", "INVALID" }; 692 693 if (sm == NULL) 694 return; 695 696 /* 697 * Print out the freelist entries in both encoded and decoded form. 698 */ 699 alloc = 0; 700 for (offset = 0; offset < space_map_length(sm); 701 offset += sizeof (entry)) { 702 uint8_t mapshift = sm->sm_shift; 703 704 VERIFY0(dmu_read(os, space_map_object(sm), offset, 705 sizeof (entry), &entry, DMU_READ_PREFETCH)); 706 if (SM_DEBUG_DECODE(entry)) { 707 708 (void) printf("\t [%6llu] %s: txg %llu, pass %llu\n", 709 (u_longlong_t)(offset / sizeof (entry)), 710 ddata[SM_DEBUG_ACTION_DECODE(entry)], 711 (u_longlong_t)SM_DEBUG_TXG_DECODE(entry), 712 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry)); 713 } else { 714 (void) printf("\t [%6llu] %c range:" 715 " %010llx-%010llx size: %06llx\n", 716 (u_longlong_t)(offset / sizeof (entry)), 717 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 718 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 719 mapshift) + sm->sm_start), 720 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 721 mapshift) + sm->sm_start + 722 (SM_RUN_DECODE(entry) << mapshift)), 723 (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift)); 724 if (SM_TYPE_DECODE(entry) == SM_ALLOC) 725 alloc += SM_RUN_DECODE(entry) << mapshift; 726 else 727 alloc -= SM_RUN_DECODE(entry) << mapshift; 728 } 729 } 730 if (alloc != space_map_allocated(sm)) { 731 (void) printf("space_map_object alloc (%llu) INCONSISTENT " 732 "with space map summary (%llu)\n", 733 (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc); 734 } 735 } 736 737 static void 738 dump_metaslab_stats(metaslab_t *msp) 739 { 740 char maxbuf[32]; 741 range_tree_t *rt = msp->ms_tree; 742 avl_tree_t *t = &msp->ms_size_tree; 743 int free_pct = range_tree_space(rt) * 100 / msp->ms_size; 744 745 zdb_nicenum(metaslab_block_maxsize(msp), maxbuf); 746 747 (void) printf("\t %25s %10lu %7s %6s %4s %4d%%\n", 748 "segments", avl_numnodes(t), "maxsize", maxbuf, 749 "freepct", free_pct); 750 (void) printf("\tIn-memory histogram:\n"); 751 dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 752 } 753 754 static void 755 dump_metaslab(metaslab_t *msp) 756 { 757 vdev_t *vd = msp->ms_group->mg_vd; 758 spa_t *spa = vd->vdev_spa; 759 space_map_t *sm = msp->ms_sm; 760 char freebuf[32]; 761 762 zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf); 763 764 (void) printf( 765 "\tmetaslab %6llu offset %12llx spacemap %6llu free %5s\n", 766 (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start, 767 (u_longlong_t)space_map_object(sm), freebuf); 768 769 if (dump_opt['m'] > 2 && !dump_opt['L']) { 770 mutex_enter(&msp->ms_lock); 771 metaslab_load_wait(msp); 772 if (!msp->ms_loaded) { 773 VERIFY0(metaslab_load(msp)); 774 range_tree_stat_verify(msp->ms_tree); 775 } 776 dump_metaslab_stats(msp); 777 metaslab_unload(msp); 778 mutex_exit(&msp->ms_lock); 779 } 780 781 if (dump_opt['m'] > 1 && sm != NULL && 782 spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) { 783 /* 784 * The space map histogram represents free space in chunks 785 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift). 786 */ 787 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n", 788 (u_longlong_t)msp->ms_fragmentation); 789 dump_histogram(sm->sm_phys->smp_histogram, 790 SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift); 791 } 792 793 if (dump_opt['d'] > 5 || dump_opt['m'] > 3) { 794 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift)); 795 796 mutex_enter(&msp->ms_lock); 797 dump_spacemap(spa->spa_meta_objset, msp->ms_sm); 798 mutex_exit(&msp->ms_lock); 799 } 800 } 801 802 static void 803 print_vdev_metaslab_header(vdev_t *vd) 804 { 805 (void) printf("\tvdev %10llu\n\t%-10s%5llu %-19s %-15s %-10s\n", 806 (u_longlong_t)vd->vdev_id, 807 "metaslabs", (u_longlong_t)vd->vdev_ms_count, 808 "offset", "spacemap", "free"); 809 (void) printf("\t%15s %19s %15s %10s\n", 810 "---------------", "-------------------", 811 "---------------", "-------------"); 812 } 813 814 static void 815 dump_metaslab_groups(spa_t *spa) 816 { 817 vdev_t *rvd = spa->spa_root_vdev; 818 metaslab_class_t *mc = spa_normal_class(spa); 819 uint64_t fragmentation; 820 821 metaslab_class_histogram_verify(mc); 822 823 for (int c = 0; c < rvd->vdev_children; c++) { 824 vdev_t *tvd = rvd->vdev_child[c]; 825 metaslab_group_t *mg = tvd->vdev_mg; 826 827 if (mg->mg_class != mc) 828 continue; 829 830 metaslab_group_histogram_verify(mg); 831 mg->mg_fragmentation = metaslab_group_fragmentation(mg); 832 833 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t" 834 "fragmentation", 835 (u_longlong_t)tvd->vdev_id, 836 (u_longlong_t)tvd->vdev_ms_count); 837 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) { 838 (void) printf("%3s\n", "-"); 839 } else { 840 (void) printf("%3llu%%\n", 841 (u_longlong_t)mg->mg_fragmentation); 842 } 843 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 844 } 845 846 (void) printf("\tpool %s\tfragmentation", spa_name(spa)); 847 fragmentation = metaslab_class_fragmentation(mc); 848 if (fragmentation == ZFS_FRAG_INVALID) 849 (void) printf("\t%3s\n", "-"); 850 else 851 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation); 852 dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 853 } 854 855 static void 856 dump_metaslabs(spa_t *spa) 857 { 858 vdev_t *vd, *rvd = spa->spa_root_vdev; 859 uint64_t m, c = 0, children = rvd->vdev_children; 860 861 (void) printf("\nMetaslabs:\n"); 862 863 if (!dump_opt['d'] && zopt_objects > 0) { 864 c = zopt_object[0]; 865 866 if (c >= children) 867 (void) fatal("bad vdev id: %llu", (u_longlong_t)c); 868 869 if (zopt_objects > 1) { 870 vd = rvd->vdev_child[c]; 871 print_vdev_metaslab_header(vd); 872 873 for (m = 1; m < zopt_objects; m++) { 874 if (zopt_object[m] < vd->vdev_ms_count) 875 dump_metaslab( 876 vd->vdev_ms[zopt_object[m]]); 877 else 878 (void) fprintf(stderr, "bad metaslab " 879 "number %llu\n", 880 (u_longlong_t)zopt_object[m]); 881 } 882 (void) printf("\n"); 883 return; 884 } 885 children = c + 1; 886 } 887 for (; c < children; c++) { 888 vd = rvd->vdev_child[c]; 889 print_vdev_metaslab_header(vd); 890 891 for (m = 0; m < vd->vdev_ms_count; m++) 892 dump_metaslab(vd->vdev_ms[m]); 893 (void) printf("\n"); 894 } 895 } 896 897 static void 898 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index) 899 { 900 const ddt_phys_t *ddp = dde->dde_phys; 901 const ddt_key_t *ddk = &dde->dde_key; 902 char *types[4] = { "ditto", "single", "double", "triple" }; 903 char blkbuf[BP_SPRINTF_LEN]; 904 blkptr_t blk; 905 906 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 907 if (ddp->ddp_phys_birth == 0) 908 continue; 909 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk); 910 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk); 911 (void) printf("index %llx refcnt %llu %s %s\n", 912 (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt, 913 types[p], blkbuf); 914 } 915 } 916 917 static void 918 dump_dedup_ratio(const ddt_stat_t *dds) 919 { 920 double rL, rP, rD, D, dedup, compress, copies; 921 922 if (dds->dds_blocks == 0) 923 return; 924 925 rL = (double)dds->dds_ref_lsize; 926 rP = (double)dds->dds_ref_psize; 927 rD = (double)dds->dds_ref_dsize; 928 D = (double)dds->dds_dsize; 929 930 dedup = rD / D; 931 compress = rL / rP; 932 copies = rD / rP; 933 934 (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, " 935 "dedup * compress / copies = %.2f\n\n", 936 dedup, compress, copies, dedup * compress / copies); 937 } 938 939 static void 940 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class) 941 { 942 char name[DDT_NAMELEN]; 943 ddt_entry_t dde; 944 uint64_t walk = 0; 945 dmu_object_info_t doi; 946 uint64_t count, dspace, mspace; 947 int error; 948 949 error = ddt_object_info(ddt, type, class, &doi); 950 951 if (error == ENOENT) 952 return; 953 ASSERT(error == 0); 954 955 if ((count = ddt_object_count(ddt, type, class)) == 0) 956 return; 957 958 dspace = doi.doi_physical_blocks_512 << 9; 959 mspace = doi.doi_fill_count * doi.doi_data_block_size; 960 961 ddt_object_name(ddt, type, class, name); 962 963 (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n", 964 name, 965 (u_longlong_t)count, 966 (u_longlong_t)(dspace / count), 967 (u_longlong_t)(mspace / count)); 968 969 if (dump_opt['D'] < 3) 970 return; 971 972 zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]); 973 974 if (dump_opt['D'] < 4) 975 return; 976 977 if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE) 978 return; 979 980 (void) printf("%s contents:\n\n", name); 981 982 while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0) 983 dump_dde(ddt, &dde, walk); 984 985 ASSERT(error == ENOENT); 986 987 (void) printf("\n"); 988 } 989 990 static void 991 dump_all_ddts(spa_t *spa) 992 { 993 ddt_histogram_t ddh_total = { 0 }; 994 ddt_stat_t dds_total = { 0 }; 995 996 for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { 997 ddt_t *ddt = spa->spa_ddt[c]; 998 for (enum ddt_type type = 0; type < DDT_TYPES; type++) { 999 for (enum ddt_class class = 0; class < DDT_CLASSES; 1000 class++) { 1001 dump_ddt(ddt, type, class); 1002 } 1003 } 1004 } 1005 1006 ddt_get_dedup_stats(spa, &dds_total); 1007 1008 if (dds_total.dds_blocks == 0) { 1009 (void) printf("All DDTs are empty\n"); 1010 return; 1011 } 1012 1013 (void) printf("\n"); 1014 1015 if (dump_opt['D'] > 1) { 1016 (void) printf("DDT histogram (aggregated over all DDTs):\n"); 1017 ddt_get_dedup_histogram(spa, &ddh_total); 1018 zpool_dump_ddt(&dds_total, &ddh_total); 1019 } 1020 1021 dump_dedup_ratio(&dds_total); 1022 } 1023 1024 static void 1025 dump_dtl_seg(void *arg, uint64_t start, uint64_t size) 1026 { 1027 char *prefix = arg; 1028 1029 (void) printf("%s [%llu,%llu) length %llu\n", 1030 prefix, 1031 (u_longlong_t)start, 1032 (u_longlong_t)(start + size), 1033 (u_longlong_t)(size)); 1034 } 1035 1036 static void 1037 dump_dtl(vdev_t *vd, int indent) 1038 { 1039 spa_t *spa = vd->vdev_spa; 1040 boolean_t required; 1041 char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" }; 1042 char prefix[256]; 1043 1044 spa_vdev_state_enter(spa, SCL_NONE); 1045 required = vdev_dtl_required(vd); 1046 (void) spa_vdev_state_exit(spa, NULL, 0); 1047 1048 if (indent == 0) 1049 (void) printf("\nDirty time logs:\n\n"); 1050 1051 (void) printf("\t%*s%s [%s]\n", indent, "", 1052 vd->vdev_path ? vd->vdev_path : 1053 vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa), 1054 required ? "DTL-required" : "DTL-expendable"); 1055 1056 for (int t = 0; t < DTL_TYPES; t++) { 1057 range_tree_t *rt = vd->vdev_dtl[t]; 1058 if (range_tree_space(rt) == 0) 1059 continue; 1060 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s", 1061 indent + 2, "", name[t]); 1062 mutex_enter(rt->rt_lock); 1063 range_tree_walk(rt, dump_dtl_seg, prefix); 1064 mutex_exit(rt->rt_lock); 1065 if (dump_opt['d'] > 5 && vd->vdev_children == 0) 1066 dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm); 1067 } 1068 1069 for (int c = 0; c < vd->vdev_children; c++) 1070 dump_dtl(vd->vdev_child[c], indent + 4); 1071 } 1072 1073 static void 1074 dump_history(spa_t *spa) 1075 { 1076 nvlist_t **events = NULL; 1077 uint64_t resid, len, off = 0; 1078 uint_t num = 0; 1079 int error; 1080 time_t tsec; 1081 struct tm t; 1082 char tbuf[30]; 1083 char internalstr[MAXPATHLEN]; 1084 1085 char *buf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 1086 do { 1087 len = SPA_MAXBLOCKSIZE; 1088 1089 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) { 1090 (void) fprintf(stderr, "Unable to read history: " 1091 "error %d\n", error); 1092 umem_free(buf, SPA_MAXBLOCKSIZE); 1093 return; 1094 } 1095 1096 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0) 1097 break; 1098 1099 off -= resid; 1100 } while (len != 0); 1101 umem_free(buf, SPA_MAXBLOCKSIZE); 1102 1103 (void) printf("\nHistory:\n"); 1104 for (int i = 0; i < num; i++) { 1105 uint64_t time, txg, ievent; 1106 char *cmd, *intstr; 1107 boolean_t printed = B_FALSE; 1108 1109 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME, 1110 &time) != 0) 1111 goto next; 1112 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD, 1113 &cmd) != 0) { 1114 if (nvlist_lookup_uint64(events[i], 1115 ZPOOL_HIST_INT_EVENT, &ievent) != 0) 1116 goto next; 1117 verify(nvlist_lookup_uint64(events[i], 1118 ZPOOL_HIST_TXG, &txg) == 0); 1119 verify(nvlist_lookup_string(events[i], 1120 ZPOOL_HIST_INT_STR, &intstr) == 0); 1121 if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS) 1122 goto next; 1123 1124 (void) snprintf(internalstr, 1125 sizeof (internalstr), 1126 "[internal %s txg:%lld] %s", 1127 zfs_history_event_names[ievent], txg, 1128 intstr); 1129 cmd = internalstr; 1130 } 1131 tsec = time; 1132 (void) localtime_r(&tsec, &t); 1133 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t); 1134 (void) printf("%s %s\n", tbuf, cmd); 1135 printed = B_TRUE; 1136 1137 next: 1138 if (dump_opt['h'] > 1) { 1139 if (!printed) 1140 (void) printf("unrecognized record:\n"); 1141 dump_nvlist(events[i], 2); 1142 } 1143 } 1144 } 1145 1146 /*ARGSUSED*/ 1147 static void 1148 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 1149 { 1150 } 1151 1152 static uint64_t 1153 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, 1154 const zbookmark_phys_t *zb) 1155 { 1156 if (dnp == NULL) { 1157 ASSERT(zb->zb_level < 0); 1158 if (zb->zb_object == 0) 1159 return (zb->zb_blkid); 1160 return (zb->zb_blkid * BP_GET_LSIZE(bp)); 1161 } 1162 1163 ASSERT(zb->zb_level >= 0); 1164 1165 return ((zb->zb_blkid << 1166 (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 1167 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 1168 } 1169 1170 static void 1171 snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp) 1172 { 1173 const dva_t *dva = bp->blk_dva; 1174 int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1; 1175 1176 if (dump_opt['b'] >= 6) { 1177 snprintf_blkptr(blkbuf, buflen, bp); 1178 return; 1179 } 1180 1181 if (BP_IS_EMBEDDED(bp)) { 1182 (void) sprintf(blkbuf, 1183 "EMBEDDED et=%u %llxL/%llxP B=%llu", 1184 (int)BPE_GET_ETYPE(bp), 1185 (u_longlong_t)BPE_GET_LSIZE(bp), 1186 (u_longlong_t)BPE_GET_PSIZE(bp), 1187 (u_longlong_t)bp->blk_birth); 1188 return; 1189 } 1190 1191 blkbuf[0] = '\0'; 1192 for (int i = 0; i < ndvas; i++) 1193 (void) snprintf(blkbuf + strlen(blkbuf), 1194 buflen - strlen(blkbuf), "%llu:%llx:%llx ", 1195 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 1196 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 1197 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 1198 1199 if (BP_IS_HOLE(bp)) { 1200 (void) snprintf(blkbuf + strlen(blkbuf), 1201 buflen - strlen(blkbuf), 1202 "%llxL B=%llu", 1203 (u_longlong_t)BP_GET_LSIZE(bp), 1204 (u_longlong_t)bp->blk_birth); 1205 } else { 1206 (void) snprintf(blkbuf + strlen(blkbuf), 1207 buflen - strlen(blkbuf), 1208 "%llxL/%llxP F=%llu B=%llu/%llu", 1209 (u_longlong_t)BP_GET_LSIZE(bp), 1210 (u_longlong_t)BP_GET_PSIZE(bp), 1211 (u_longlong_t)BP_GET_FILL(bp), 1212 (u_longlong_t)bp->blk_birth, 1213 (u_longlong_t)BP_PHYSICAL_BIRTH(bp)); 1214 } 1215 } 1216 1217 static void 1218 print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb, 1219 const dnode_phys_t *dnp) 1220 { 1221 char blkbuf[BP_SPRINTF_LEN]; 1222 int l; 1223 1224 if (!BP_IS_EMBEDDED(bp)) { 1225 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 1226 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 1227 } 1228 1229 (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb)); 1230 1231 ASSERT(zb->zb_level >= 0); 1232 1233 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 1234 if (l == zb->zb_level) { 1235 (void) printf("L%llx", (u_longlong_t)zb->zb_level); 1236 } else { 1237 (void) printf(" "); 1238 } 1239 } 1240 1241 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp); 1242 (void) printf("%s\n", blkbuf); 1243 } 1244 1245 static int 1246 visit_indirect(spa_t *spa, const dnode_phys_t *dnp, 1247 blkptr_t *bp, const zbookmark_phys_t *zb) 1248 { 1249 int err = 0; 1250 1251 if (bp->blk_birth == 0) 1252 return (0); 1253 1254 print_indirect(bp, zb, dnp); 1255 1256 if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) { 1257 arc_flags_t flags = ARC_FLAG_WAIT; 1258 int i; 1259 blkptr_t *cbp; 1260 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT; 1261 arc_buf_t *buf; 1262 uint64_t fill = 0; 1263 1264 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf, 1265 ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb); 1266 if (err) 1267 return (err); 1268 ASSERT(buf->b_data); 1269 1270 /* recursively visit blocks below this */ 1271 cbp = buf->b_data; 1272 for (i = 0; i < epb; i++, cbp++) { 1273 zbookmark_phys_t czb; 1274 1275 SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object, 1276 zb->zb_level - 1, 1277 zb->zb_blkid * epb + i); 1278 err = visit_indirect(spa, dnp, cbp, &czb); 1279 if (err) 1280 break; 1281 fill += BP_GET_FILL(cbp); 1282 } 1283 if (!err) 1284 ASSERT3U(fill, ==, BP_GET_FILL(bp)); 1285 arc_buf_destroy(buf, &buf); 1286 } 1287 1288 return (err); 1289 } 1290 1291 /*ARGSUSED*/ 1292 static void 1293 dump_indirect(dnode_t *dn) 1294 { 1295 dnode_phys_t *dnp = dn->dn_phys; 1296 int j; 1297 zbookmark_phys_t czb; 1298 1299 (void) printf("Indirect blocks:\n"); 1300 1301 SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset), 1302 dn->dn_object, dnp->dn_nlevels - 1, 0); 1303 for (j = 0; j < dnp->dn_nblkptr; j++) { 1304 czb.zb_blkid = j; 1305 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp, 1306 &dnp->dn_blkptr[j], &czb); 1307 } 1308 1309 (void) printf("\n"); 1310 } 1311 1312 /*ARGSUSED*/ 1313 static void 1314 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 1315 { 1316 dsl_dir_phys_t *dd = data; 1317 time_t crtime; 1318 char nice[32]; 1319 1320 if (dd == NULL) 1321 return; 1322 1323 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t)); 1324 1325 crtime = dd->dd_creation_time; 1326 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1327 (void) printf("\t\thead_dataset_obj = %llu\n", 1328 (u_longlong_t)dd->dd_head_dataset_obj); 1329 (void) printf("\t\tparent_dir_obj = %llu\n", 1330 (u_longlong_t)dd->dd_parent_obj); 1331 (void) printf("\t\torigin_obj = %llu\n", 1332 (u_longlong_t)dd->dd_origin_obj); 1333 (void) printf("\t\tchild_dir_zapobj = %llu\n", 1334 (u_longlong_t)dd->dd_child_dir_zapobj); 1335 zdb_nicenum(dd->dd_used_bytes, nice); 1336 (void) printf("\t\tused_bytes = %s\n", nice); 1337 zdb_nicenum(dd->dd_compressed_bytes, nice); 1338 (void) printf("\t\tcompressed_bytes = %s\n", nice); 1339 zdb_nicenum(dd->dd_uncompressed_bytes, nice); 1340 (void) printf("\t\tuncompressed_bytes = %s\n", nice); 1341 zdb_nicenum(dd->dd_quota, nice); 1342 (void) printf("\t\tquota = %s\n", nice); 1343 zdb_nicenum(dd->dd_reserved, nice); 1344 (void) printf("\t\treserved = %s\n", nice); 1345 (void) printf("\t\tprops_zapobj = %llu\n", 1346 (u_longlong_t)dd->dd_props_zapobj); 1347 (void) printf("\t\tdeleg_zapobj = %llu\n", 1348 (u_longlong_t)dd->dd_deleg_zapobj); 1349 (void) printf("\t\tflags = %llx\n", 1350 (u_longlong_t)dd->dd_flags); 1351 1352 #define DO(which) \ 1353 zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \ 1354 (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice) 1355 DO(HEAD); 1356 DO(SNAP); 1357 DO(CHILD); 1358 DO(CHILD_RSRV); 1359 DO(REFRSRV); 1360 #undef DO 1361 } 1362 1363 /*ARGSUSED*/ 1364 static void 1365 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 1366 { 1367 dsl_dataset_phys_t *ds = data; 1368 time_t crtime; 1369 char used[32], compressed[32], uncompressed[32], unique[32]; 1370 char blkbuf[BP_SPRINTF_LEN]; 1371 1372 if (ds == NULL) 1373 return; 1374 1375 ASSERT(size == sizeof (*ds)); 1376 crtime = ds->ds_creation_time; 1377 zdb_nicenum(ds->ds_referenced_bytes, used); 1378 zdb_nicenum(ds->ds_compressed_bytes, compressed); 1379 zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed); 1380 zdb_nicenum(ds->ds_unique_bytes, unique); 1381 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp); 1382 1383 (void) printf("\t\tdir_obj = %llu\n", 1384 (u_longlong_t)ds->ds_dir_obj); 1385 (void) printf("\t\tprev_snap_obj = %llu\n", 1386 (u_longlong_t)ds->ds_prev_snap_obj); 1387 (void) printf("\t\tprev_snap_txg = %llu\n", 1388 (u_longlong_t)ds->ds_prev_snap_txg); 1389 (void) printf("\t\tnext_snap_obj = %llu\n", 1390 (u_longlong_t)ds->ds_next_snap_obj); 1391 (void) printf("\t\tsnapnames_zapobj = %llu\n", 1392 (u_longlong_t)ds->ds_snapnames_zapobj); 1393 (void) printf("\t\tnum_children = %llu\n", 1394 (u_longlong_t)ds->ds_num_children); 1395 (void) printf("\t\tuserrefs_obj = %llu\n", 1396 (u_longlong_t)ds->ds_userrefs_obj); 1397 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1398 (void) printf("\t\tcreation_txg = %llu\n", 1399 (u_longlong_t)ds->ds_creation_txg); 1400 (void) printf("\t\tdeadlist_obj = %llu\n", 1401 (u_longlong_t)ds->ds_deadlist_obj); 1402 (void) printf("\t\tused_bytes = %s\n", used); 1403 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 1404 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 1405 (void) printf("\t\tunique = %s\n", unique); 1406 (void) printf("\t\tfsid_guid = %llu\n", 1407 (u_longlong_t)ds->ds_fsid_guid); 1408 (void) printf("\t\tguid = %llu\n", 1409 (u_longlong_t)ds->ds_guid); 1410 (void) printf("\t\tflags = %llx\n", 1411 (u_longlong_t)ds->ds_flags); 1412 (void) printf("\t\tnext_clones_obj = %llu\n", 1413 (u_longlong_t)ds->ds_next_clones_obj); 1414 (void) printf("\t\tprops_obj = %llu\n", 1415 (u_longlong_t)ds->ds_props_obj); 1416 (void) printf("\t\tbp = %s\n", blkbuf); 1417 } 1418 1419 /* ARGSUSED */ 1420 static int 1421 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 1422 { 1423 char blkbuf[BP_SPRINTF_LEN]; 1424 1425 if (bp->blk_birth != 0) { 1426 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 1427 (void) printf("\t%s\n", blkbuf); 1428 } 1429 return (0); 1430 } 1431 1432 static void 1433 dump_bptree(objset_t *os, uint64_t obj, char *name) 1434 { 1435 char bytes[32]; 1436 bptree_phys_t *bt; 1437 dmu_buf_t *db; 1438 1439 if (dump_opt['d'] < 3) 1440 return; 1441 1442 VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db)); 1443 bt = db->db_data; 1444 zdb_nicenum(bt->bt_bytes, bytes); 1445 (void) printf("\n %s: %llu datasets, %s\n", 1446 name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes); 1447 dmu_buf_rele(db, FTAG); 1448 1449 if (dump_opt['d'] < 5) 1450 return; 1451 1452 (void) printf("\n"); 1453 1454 (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL); 1455 } 1456 1457 /* ARGSUSED */ 1458 static int 1459 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 1460 { 1461 char blkbuf[BP_SPRINTF_LEN]; 1462 1463 ASSERT(bp->blk_birth != 0); 1464 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp); 1465 (void) printf("\t%s\n", blkbuf); 1466 return (0); 1467 } 1468 1469 static void 1470 dump_full_bpobj(bpobj_t *bpo, char *name, int indent) 1471 { 1472 char bytes[32]; 1473 char comp[32]; 1474 char uncomp[32]; 1475 1476 if (dump_opt['d'] < 3) 1477 return; 1478 1479 zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes); 1480 if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) { 1481 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp); 1482 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp); 1483 (void) printf(" %*s: object %llu, %llu local blkptrs, " 1484 "%llu subobjs in object %llu, %s (%s/%s comp)\n", 1485 indent * 8, name, 1486 (u_longlong_t)bpo->bpo_object, 1487 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, 1488 (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs, 1489 (u_longlong_t)bpo->bpo_phys->bpo_subobjs, 1490 bytes, comp, uncomp); 1491 1492 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) { 1493 uint64_t subobj; 1494 bpobj_t subbpo; 1495 int error; 1496 VERIFY0(dmu_read(bpo->bpo_os, 1497 bpo->bpo_phys->bpo_subobjs, 1498 i * sizeof (subobj), sizeof (subobj), &subobj, 0)); 1499 error = bpobj_open(&subbpo, bpo->bpo_os, subobj); 1500 if (error != 0) { 1501 (void) printf("ERROR %u while trying to open " 1502 "subobj id %llu\n", 1503 error, (u_longlong_t)subobj); 1504 continue; 1505 } 1506 dump_full_bpobj(&subbpo, "subobj", indent + 1); 1507 bpobj_close(&subbpo); 1508 } 1509 } else { 1510 (void) printf(" %*s: object %llu, %llu blkptrs, %s\n", 1511 indent * 8, name, 1512 (u_longlong_t)bpo->bpo_object, 1513 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, 1514 bytes); 1515 } 1516 1517 if (dump_opt['d'] < 5) 1518 return; 1519 1520 1521 if (indent == 0) { 1522 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL); 1523 (void) printf("\n"); 1524 } 1525 } 1526 1527 static void 1528 dump_deadlist(dsl_deadlist_t *dl) 1529 { 1530 dsl_deadlist_entry_t *dle; 1531 uint64_t unused; 1532 char bytes[32]; 1533 char comp[32]; 1534 char uncomp[32]; 1535 1536 if (dump_opt['d'] < 3) 1537 return; 1538 1539 if (dl->dl_oldfmt) { 1540 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0); 1541 return; 1542 } 1543 1544 zdb_nicenum(dl->dl_phys->dl_used, bytes); 1545 zdb_nicenum(dl->dl_phys->dl_comp, comp); 1546 zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp); 1547 (void) printf("\n Deadlist: %s (%s/%s comp)\n", 1548 bytes, comp, uncomp); 1549 1550 if (dump_opt['d'] < 4) 1551 return; 1552 1553 (void) printf("\n"); 1554 1555 /* force the tree to be loaded */ 1556 dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused); 1557 1558 for (dle = avl_first(&dl->dl_tree); dle; 1559 dle = AVL_NEXT(&dl->dl_tree, dle)) { 1560 if (dump_opt['d'] >= 5) { 1561 char buf[128]; 1562 (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ", 1563 (longlong_t)dle->dle_mintxg, 1564 (longlong_t)dle->dle_bpobj.bpo_object); 1565 1566 dump_full_bpobj(&dle->dle_bpobj, buf, 0); 1567 } else { 1568 (void) printf("mintxg %llu -> obj %llu\n", 1569 (longlong_t)dle->dle_mintxg, 1570 (longlong_t)dle->dle_bpobj.bpo_object); 1571 1572 } 1573 } 1574 } 1575 1576 static avl_tree_t idx_tree; 1577 static avl_tree_t domain_tree; 1578 static boolean_t fuid_table_loaded; 1579 static boolean_t sa_loaded; 1580 sa_attr_type_t *sa_attr_table; 1581 1582 static void 1583 fuid_table_destroy() 1584 { 1585 if (fuid_table_loaded) { 1586 zfs_fuid_table_destroy(&idx_tree, &domain_tree); 1587 fuid_table_loaded = B_FALSE; 1588 } 1589 } 1590 1591 /* 1592 * print uid or gid information. 1593 * For normal POSIX id just the id is printed in decimal format. 1594 * For CIFS files with FUID the fuid is printed in hex followed by 1595 * the domain-rid string. 1596 */ 1597 static void 1598 print_idstr(uint64_t id, const char *id_type) 1599 { 1600 if (FUID_INDEX(id)) { 1601 char *domain; 1602 1603 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id)); 1604 (void) printf("\t%s %llx [%s-%d]\n", id_type, 1605 (u_longlong_t)id, domain, (int)FUID_RID(id)); 1606 } else { 1607 (void) printf("\t%s %llu\n", id_type, (u_longlong_t)id); 1608 } 1609 1610 } 1611 1612 static void 1613 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid) 1614 { 1615 uint32_t uid_idx, gid_idx; 1616 1617 uid_idx = FUID_INDEX(uid); 1618 gid_idx = FUID_INDEX(gid); 1619 1620 /* Load domain table, if not already loaded */ 1621 if (!fuid_table_loaded && (uid_idx || gid_idx)) { 1622 uint64_t fuid_obj; 1623 1624 /* first find the fuid object. It lives in the master node */ 1625 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 1626 8, 1, &fuid_obj) == 0); 1627 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree); 1628 (void) zfs_fuid_table_load(os, fuid_obj, 1629 &idx_tree, &domain_tree); 1630 fuid_table_loaded = B_TRUE; 1631 } 1632 1633 print_idstr(uid, "uid"); 1634 print_idstr(gid, "gid"); 1635 } 1636 1637 /*ARGSUSED*/ 1638 static void 1639 dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 1640 { 1641 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 1642 sa_handle_t *hdl; 1643 uint64_t xattr, rdev, gen; 1644 uint64_t uid, gid, mode, fsize, parent, links; 1645 uint64_t pflags; 1646 uint64_t acctm[2], modtm[2], chgtm[2], crtm[2]; 1647 time_t z_crtime, z_atime, z_mtime, z_ctime; 1648 sa_bulk_attr_t bulk[12]; 1649 int idx = 0; 1650 int error; 1651 1652 if (!sa_loaded) { 1653 uint64_t sa_attrs = 0; 1654 uint64_t version; 1655 1656 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR, 1657 8, 1, &version) == 0); 1658 if (version >= ZPL_VERSION_SA) { 1659 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 1660 8, 1, &sa_attrs) == 0); 1661 } 1662 if ((error = sa_setup(os, sa_attrs, zfs_attr_table, 1663 ZPL_END, &sa_attr_table)) != 0) { 1664 (void) printf("sa_setup failed errno %d, can't " 1665 "display znode contents\n", error); 1666 return; 1667 } 1668 sa_loaded = B_TRUE; 1669 } 1670 1671 if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) { 1672 (void) printf("Failed to get handle for SA znode\n"); 1673 return; 1674 } 1675 1676 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8); 1677 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8); 1678 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL, 1679 &links, 8); 1680 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8); 1681 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL, 1682 &mode, 8); 1683 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT], 1684 NULL, &parent, 8); 1685 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL, 1686 &fsize, 8); 1687 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL, 1688 acctm, 16); 1689 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL, 1690 modtm, 16); 1691 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL, 1692 crtm, 16); 1693 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL, 1694 chgtm, 16); 1695 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL, 1696 &pflags, 8); 1697 1698 if (sa_bulk_lookup(hdl, bulk, idx)) { 1699 (void) sa_handle_destroy(hdl); 1700 return; 1701 } 1702 1703 error = zfs_obj_to_path(os, object, path, sizeof (path)); 1704 if (error != 0) { 1705 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>", 1706 (u_longlong_t)object); 1707 } 1708 if (dump_opt['d'] < 3) { 1709 (void) printf("\t%s\n", path); 1710 (void) sa_handle_destroy(hdl); 1711 return; 1712 } 1713 1714 z_crtime = (time_t)crtm[0]; 1715 z_atime = (time_t)acctm[0]; 1716 z_mtime = (time_t)modtm[0]; 1717 z_ctime = (time_t)chgtm[0]; 1718 1719 (void) printf("\tpath %s\n", path); 1720 dump_uidgid(os, uid, gid); 1721 (void) printf("\tatime %s", ctime(&z_atime)); 1722 (void) printf("\tmtime %s", ctime(&z_mtime)); 1723 (void) printf("\tctime %s", ctime(&z_ctime)); 1724 (void) printf("\tcrtime %s", ctime(&z_crtime)); 1725 (void) printf("\tgen %llu\n", (u_longlong_t)gen); 1726 (void) printf("\tmode %llo\n", (u_longlong_t)mode); 1727 (void) printf("\tsize %llu\n", (u_longlong_t)fsize); 1728 (void) printf("\tparent %llu\n", (u_longlong_t)parent); 1729 (void) printf("\tlinks %llu\n", (u_longlong_t)links); 1730 (void) printf("\tpflags %llx\n", (u_longlong_t)pflags); 1731 if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr, 1732 sizeof (uint64_t)) == 0) 1733 (void) printf("\txattr %llu\n", (u_longlong_t)xattr); 1734 if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev, 1735 sizeof (uint64_t)) == 0) 1736 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)rdev); 1737 sa_handle_destroy(hdl); 1738 } 1739 1740 /*ARGSUSED*/ 1741 static void 1742 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 1743 { 1744 } 1745 1746 /*ARGSUSED*/ 1747 static void 1748 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 1749 { 1750 } 1751 1752 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = { 1753 dump_none, /* unallocated */ 1754 dump_zap, /* object directory */ 1755 dump_uint64, /* object array */ 1756 dump_none, /* packed nvlist */ 1757 dump_packed_nvlist, /* packed nvlist size */ 1758 dump_none, /* bpobj */ 1759 dump_bpobj, /* bpobj header */ 1760 dump_none, /* SPA space map header */ 1761 dump_none, /* SPA space map */ 1762 dump_none, /* ZIL intent log */ 1763 dump_dnode, /* DMU dnode */ 1764 dump_dmu_objset, /* DMU objset */ 1765 dump_dsl_dir, /* DSL directory */ 1766 dump_zap, /* DSL directory child map */ 1767 dump_zap, /* DSL dataset snap map */ 1768 dump_zap, /* DSL props */ 1769 dump_dsl_dataset, /* DSL dataset */ 1770 dump_znode, /* ZFS znode */ 1771 dump_acl, /* ZFS V0 ACL */ 1772 dump_uint8, /* ZFS plain file */ 1773 dump_zpldir, /* ZFS directory */ 1774 dump_zap, /* ZFS master node */ 1775 dump_zap, /* ZFS delete queue */ 1776 dump_uint8, /* zvol object */ 1777 dump_zap, /* zvol prop */ 1778 dump_uint8, /* other uint8[] */ 1779 dump_uint64, /* other uint64[] */ 1780 dump_zap, /* other ZAP */ 1781 dump_zap, /* persistent error log */ 1782 dump_uint8, /* SPA history */ 1783 dump_history_offsets, /* SPA history offsets */ 1784 dump_zap, /* Pool properties */ 1785 dump_zap, /* DSL permissions */ 1786 dump_acl, /* ZFS ACL */ 1787 dump_uint8, /* ZFS SYSACL */ 1788 dump_none, /* FUID nvlist */ 1789 dump_packed_nvlist, /* FUID nvlist size */ 1790 dump_zap, /* DSL dataset next clones */ 1791 dump_zap, /* DSL scrub queue */ 1792 dump_zap, /* ZFS user/group used */ 1793 dump_zap, /* ZFS user/group quota */ 1794 dump_zap, /* snapshot refcount tags */ 1795 dump_ddt_zap, /* DDT ZAP object */ 1796 dump_zap, /* DDT statistics */ 1797 dump_znode, /* SA object */ 1798 dump_zap, /* SA Master Node */ 1799 dump_sa_attrs, /* SA attribute registration */ 1800 dump_sa_layouts, /* SA attribute layouts */ 1801 dump_zap, /* DSL scrub translations */ 1802 dump_none, /* fake dedup BP */ 1803 dump_zap, /* deadlist */ 1804 dump_none, /* deadlist hdr */ 1805 dump_zap, /* dsl clones */ 1806 dump_bpobj_subobjs, /* bpobj subobjs */ 1807 dump_unknown, /* Unknown type, must be last */ 1808 }; 1809 1810 static void 1811 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 1812 { 1813 dmu_buf_t *db = NULL; 1814 dmu_object_info_t doi; 1815 dnode_t *dn; 1816 void *bonus = NULL; 1817 size_t bsize = 0; 1818 char iblk[32], dblk[32], lsize[32], asize[32], fill[32]; 1819 char bonus_size[32]; 1820 char aux[50]; 1821 int error; 1822 1823 if (*print_header) { 1824 (void) printf("\n%10s %3s %5s %5s %5s %5s %6s %s\n", 1825 "Object", "lvl", "iblk", "dblk", "dsize", "lsize", 1826 "%full", "type"); 1827 *print_header = 0; 1828 } 1829 1830 if (object == 0) { 1831 dn = DMU_META_DNODE(os); 1832 } else { 1833 error = dmu_bonus_hold(os, object, FTAG, &db); 1834 if (error) 1835 fatal("dmu_bonus_hold(%llu) failed, errno %u", 1836 object, error); 1837 bonus = db->db_data; 1838 bsize = db->db_size; 1839 dn = DB_DNODE((dmu_buf_impl_t *)db); 1840 } 1841 dmu_object_info_from_dnode(dn, &doi); 1842 1843 zdb_nicenum(doi.doi_metadata_block_size, iblk); 1844 zdb_nicenum(doi.doi_data_block_size, dblk); 1845 zdb_nicenum(doi.doi_max_offset, lsize); 1846 zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize); 1847 zdb_nicenum(doi.doi_bonus_size, bonus_size); 1848 (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count * 1849 doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) / 1850 doi.doi_max_offset); 1851 1852 aux[0] = '\0'; 1853 1854 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 1855 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 1856 ZDB_CHECKSUM_NAME(doi.doi_checksum)); 1857 } 1858 1859 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 1860 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 1861 ZDB_COMPRESS_NAME(doi.doi_compress)); 1862 } 1863 1864 (void) printf("%10lld %3u %5s %5s %5s %5s %6s %s%s\n", 1865 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, 1866 asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux); 1867 1868 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 1869 (void) printf("%10s %3s %5s %5s %5s %5s %6s %s\n", 1870 "", "", "", "", "", bonus_size, "bonus", 1871 ZDB_OT_NAME(doi.doi_bonus_type)); 1872 } 1873 1874 if (verbosity >= 4) { 1875 (void) printf("\tdnode flags: %s%s%s\n", 1876 (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ? 1877 "USED_BYTES " : "", 1878 (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ? 1879 "USERUSED_ACCOUNTED " : "", 1880 (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ? 1881 "SPILL_BLKPTR" : ""); 1882 (void) printf("\tdnode maxblkid: %llu\n", 1883 (longlong_t)dn->dn_phys->dn_maxblkid); 1884 1885 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object, 1886 bonus, bsize); 1887 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0); 1888 *print_header = 1; 1889 } 1890 1891 if (verbosity >= 5) 1892 dump_indirect(dn); 1893 1894 if (verbosity >= 5) { 1895 /* 1896 * Report the list of segments that comprise the object. 1897 */ 1898 uint64_t start = 0; 1899 uint64_t end; 1900 uint64_t blkfill = 1; 1901 int minlvl = 1; 1902 1903 if (dn->dn_type == DMU_OT_DNODE) { 1904 minlvl = 0; 1905 blkfill = DNODES_PER_BLOCK; 1906 } 1907 1908 for (;;) { 1909 char segsize[32]; 1910 error = dnode_next_offset(dn, 1911 0, &start, minlvl, blkfill, 0); 1912 if (error) 1913 break; 1914 end = start; 1915 error = dnode_next_offset(dn, 1916 DNODE_FIND_HOLE, &end, minlvl, blkfill, 0); 1917 zdb_nicenum(end - start, segsize); 1918 (void) printf("\t\tsegment [%016llx, %016llx)" 1919 " size %5s\n", (u_longlong_t)start, 1920 (u_longlong_t)end, segsize); 1921 if (error) 1922 break; 1923 start = end; 1924 } 1925 } 1926 1927 if (db != NULL) 1928 dmu_buf_rele(db, FTAG); 1929 } 1930 1931 static char *objset_types[DMU_OST_NUMTYPES] = { 1932 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1933 1934 static void 1935 dump_dir(objset_t *os) 1936 { 1937 dmu_objset_stats_t dds; 1938 uint64_t object, object_count; 1939 uint64_t refdbytes, usedobjs, scratch; 1940 char numbuf[32]; 1941 char blkbuf[BP_SPRINTF_LEN + 20]; 1942 char osname[ZFS_MAX_DATASET_NAME_LEN]; 1943 char *type = "UNKNOWN"; 1944 int verbosity = dump_opt['d']; 1945 int print_header = 1; 1946 int i, error; 1947 1948 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 1949 dmu_objset_fast_stat(os, &dds); 1950 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 1951 1952 if (dds.dds_type < DMU_OST_NUMTYPES) 1953 type = objset_types[dds.dds_type]; 1954 1955 if (dds.dds_type == DMU_OST_META) { 1956 dds.dds_creation_txg = TXG_INITIAL; 1957 usedobjs = BP_GET_FILL(os->os_rootbp); 1958 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)-> 1959 dd_used_bytes; 1960 } else { 1961 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 1962 } 1963 1964 ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp)); 1965 1966 zdb_nicenum(refdbytes, numbuf); 1967 1968 if (verbosity >= 4) { 1969 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp "); 1970 (void) snprintf_blkptr(blkbuf + strlen(blkbuf), 1971 sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp); 1972 } else { 1973 blkbuf[0] = '\0'; 1974 } 1975 1976 dmu_objset_name(os, osname); 1977 1978 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 1979 "%s, %llu objects%s\n", 1980 osname, type, (u_longlong_t)dmu_objset_id(os), 1981 (u_longlong_t)dds.dds_creation_txg, 1982 numbuf, (u_longlong_t)usedobjs, blkbuf); 1983 1984 if (zopt_objects != 0) { 1985 for (i = 0; i < zopt_objects; i++) 1986 dump_object(os, zopt_object[i], verbosity, 1987 &print_header); 1988 (void) printf("\n"); 1989 return; 1990 } 1991 1992 if (dump_opt['i'] != 0 || verbosity >= 2) 1993 dump_intent_log(dmu_objset_zil(os)); 1994 1995 if (dmu_objset_ds(os) != NULL) 1996 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist); 1997 1998 if (verbosity < 2) 1999 return; 2000 2001 if (BP_IS_HOLE(os->os_rootbp)) 2002 return; 2003 2004 dump_object(os, 0, verbosity, &print_header); 2005 object_count = 0; 2006 if (DMU_USERUSED_DNODE(os) != NULL && 2007 DMU_USERUSED_DNODE(os)->dn_type != 0) { 2008 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header); 2009 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header); 2010 } 2011 2012 object = 0; 2013 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 2014 dump_object(os, object, verbosity, &print_header); 2015 object_count++; 2016 } 2017 2018 ASSERT3U(object_count, ==, usedobjs); 2019 2020 (void) printf("\n"); 2021 2022 if (error != ESRCH) { 2023 (void) fprintf(stderr, "dmu_object_next() = %d\n", error); 2024 abort(); 2025 } 2026 } 2027 2028 static void 2029 dump_uberblock(uberblock_t *ub, const char *header, const char *footer) 2030 { 2031 time_t timestamp = ub->ub_timestamp; 2032 2033 (void) printf(header ? header : ""); 2034 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 2035 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 2036 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 2037 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 2038 (void) printf("\ttimestamp = %llu UTC = %s", 2039 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 2040 if (dump_opt['u'] >= 3) { 2041 char blkbuf[BP_SPRINTF_LEN]; 2042 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp); 2043 (void) printf("\trootbp = %s\n", blkbuf); 2044 } 2045 (void) printf(footer ? footer : ""); 2046 } 2047 2048 static void 2049 dump_config(spa_t *spa) 2050 { 2051 dmu_buf_t *db; 2052 size_t nvsize = 0; 2053 int error = 0; 2054 2055 2056 error = dmu_bonus_hold(spa->spa_meta_objset, 2057 spa->spa_config_object, FTAG, &db); 2058 2059 if (error == 0) { 2060 nvsize = *(uint64_t *)db->db_data; 2061 dmu_buf_rele(db, FTAG); 2062 2063 (void) printf("\nMOS Configuration:\n"); 2064 dump_packed_nvlist(spa->spa_meta_objset, 2065 spa->spa_config_object, (void *)&nvsize, 1); 2066 } else { 2067 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d", 2068 (u_longlong_t)spa->spa_config_object, error); 2069 } 2070 } 2071 2072 static void 2073 dump_cachefile(const char *cachefile) 2074 { 2075 int fd; 2076 struct stat64 statbuf; 2077 char *buf; 2078 nvlist_t *config; 2079 2080 if ((fd = open64(cachefile, O_RDONLY)) < 0) { 2081 (void) printf("cannot open '%s': %s\n", cachefile, 2082 strerror(errno)); 2083 exit(1); 2084 } 2085 2086 if (fstat64(fd, &statbuf) != 0) { 2087 (void) printf("failed to stat '%s': %s\n", cachefile, 2088 strerror(errno)); 2089 exit(1); 2090 } 2091 2092 if ((buf = malloc(statbuf.st_size)) == NULL) { 2093 (void) fprintf(stderr, "failed to allocate %llu bytes\n", 2094 (u_longlong_t)statbuf.st_size); 2095 exit(1); 2096 } 2097 2098 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) { 2099 (void) fprintf(stderr, "failed to read %llu bytes\n", 2100 (u_longlong_t)statbuf.st_size); 2101 exit(1); 2102 } 2103 2104 (void) close(fd); 2105 2106 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) { 2107 (void) fprintf(stderr, "failed to unpack nvlist\n"); 2108 exit(1); 2109 } 2110 2111 free(buf); 2112 2113 dump_nvlist(config, 0); 2114 2115 nvlist_free(config); 2116 } 2117 2118 #define ZDB_MAX_UB_HEADER_SIZE 32 2119 2120 static void 2121 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift) 2122 { 2123 vdev_t vd; 2124 vdev_t *vdp = &vd; 2125 char header[ZDB_MAX_UB_HEADER_SIZE]; 2126 2127 vd.vdev_ashift = ashift; 2128 vdp->vdev_top = vdp; 2129 2130 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) { 2131 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i); 2132 uberblock_t *ub = (void *)((char *)lbl + uoff); 2133 2134 if (uberblock_verify(ub)) 2135 continue; 2136 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE, 2137 "Uberblock[%d]\n", i); 2138 dump_uberblock(ub, header, ""); 2139 } 2140 } 2141 2142 static void 2143 dump_label(const char *dev) 2144 { 2145 int fd; 2146 vdev_label_t label; 2147 char *path, *buf = label.vl_vdev_phys.vp_nvlist; 2148 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 2149 struct stat64 statbuf; 2150 uint64_t psize, ashift; 2151 int len = strlen(dev) + 1; 2152 2153 if (strncmp(dev, ZFS_DISK_ROOTD, strlen(ZFS_DISK_ROOTD)) == 0) { 2154 len++; 2155 path = malloc(len); 2156 (void) snprintf(path, len, "%s%s", ZFS_RDISK_ROOTD, 2157 dev + strlen(ZFS_DISK_ROOTD)); 2158 } else { 2159 path = strdup(dev); 2160 } 2161 2162 if ((fd = open64(path, O_RDONLY)) < 0) { 2163 (void) printf("cannot open '%s': %s\n", path, strerror(errno)); 2164 free(path); 2165 exit(1); 2166 } 2167 2168 if (fstat64(fd, &statbuf) != 0) { 2169 (void) printf("failed to stat '%s': %s\n", path, 2170 strerror(errno)); 2171 free(path); 2172 (void) close(fd); 2173 exit(1); 2174 } 2175 2176 if (S_ISBLK(statbuf.st_mode)) { 2177 (void) printf("cannot use '%s': character device required\n", 2178 path); 2179 free(path); 2180 (void) close(fd); 2181 exit(1); 2182 } 2183 2184 psize = statbuf.st_size; 2185 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 2186 2187 for (int l = 0; l < VDEV_LABELS; l++) { 2188 nvlist_t *config = NULL; 2189 2190 (void) printf("--------------------------------------------\n"); 2191 (void) printf("LABEL %d\n", l); 2192 (void) printf("--------------------------------------------\n"); 2193 2194 if (pread64(fd, &label, sizeof (label), 2195 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 2196 (void) printf("failed to read label %d\n", l); 2197 continue; 2198 } 2199 2200 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 2201 (void) printf("failed to unpack label %d\n", l); 2202 ashift = SPA_MINBLOCKSHIFT; 2203 } else { 2204 nvlist_t *vdev_tree = NULL; 2205 2206 dump_nvlist(config, 4); 2207 if ((nvlist_lookup_nvlist(config, 2208 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) || 2209 (nvlist_lookup_uint64(vdev_tree, 2210 ZPOOL_CONFIG_ASHIFT, &ashift) != 0)) 2211 ashift = SPA_MINBLOCKSHIFT; 2212 nvlist_free(config); 2213 } 2214 if (dump_opt['u']) 2215 dump_label_uberblocks(&label, ashift); 2216 } 2217 2218 free(path); 2219 (void) close(fd); 2220 } 2221 2222 static uint64_t dataset_feature_count[SPA_FEATURES]; 2223 2224 /*ARGSUSED*/ 2225 static int 2226 dump_one_dir(const char *dsname, void *arg) 2227 { 2228 int error; 2229 objset_t *os; 2230 2231 error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os); 2232 if (error) { 2233 (void) printf("Could not open %s, error %d\n", dsname, error); 2234 return (0); 2235 } 2236 2237 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 2238 if (!dmu_objset_ds(os)->ds_feature_inuse[f]) 2239 continue; 2240 ASSERT(spa_feature_table[f].fi_flags & 2241 ZFEATURE_FLAG_PER_DATASET); 2242 dataset_feature_count[f]++; 2243 } 2244 2245 dump_dir(os); 2246 dmu_objset_disown(os, FTAG); 2247 fuid_table_destroy(); 2248 sa_loaded = B_FALSE; 2249 return (0); 2250 } 2251 2252 /* 2253 * Block statistics. 2254 */ 2255 #define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2) 2256 typedef struct zdb_blkstats { 2257 uint64_t zb_asize; 2258 uint64_t zb_lsize; 2259 uint64_t zb_psize; 2260 uint64_t zb_count; 2261 uint64_t zb_gangs; 2262 uint64_t zb_ditto_samevdev; 2263 uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE]; 2264 } zdb_blkstats_t; 2265 2266 /* 2267 * Extended object types to report deferred frees and dedup auto-ditto blocks. 2268 */ 2269 #define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0) 2270 #define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1) 2271 #define ZDB_OT_OTHER (DMU_OT_NUMTYPES + 2) 2272 #define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 3) 2273 2274 static char *zdb_ot_extname[] = { 2275 "deferred free", 2276 "dedup ditto", 2277 "other", 2278 "Total", 2279 }; 2280 2281 #define ZB_TOTAL DN_MAX_LEVELS 2282 2283 typedef struct zdb_cb { 2284 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1]; 2285 uint64_t zcb_dedup_asize; 2286 uint64_t zcb_dedup_blocks; 2287 uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES]; 2288 uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES] 2289 [BPE_PAYLOAD_SIZE]; 2290 uint64_t zcb_start; 2291 uint64_t zcb_lastprint; 2292 uint64_t zcb_totalasize; 2293 uint64_t zcb_errors[256]; 2294 int zcb_readfails; 2295 int zcb_haderrors; 2296 spa_t *zcb_spa; 2297 } zdb_cb_t; 2298 2299 static void 2300 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp, 2301 dmu_object_type_t type) 2302 { 2303 uint64_t refcnt = 0; 2304 2305 ASSERT(type < ZDB_OT_TOTAL); 2306 2307 if (zilog && zil_bp_tree_add(zilog, bp) != 0) 2308 return; 2309 2310 for (int i = 0; i < 4; i++) { 2311 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 2312 int t = (i & 1) ? type : ZDB_OT_TOTAL; 2313 int equal; 2314 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 2315 2316 zb->zb_asize += BP_GET_ASIZE(bp); 2317 zb->zb_lsize += BP_GET_LSIZE(bp); 2318 zb->zb_psize += BP_GET_PSIZE(bp); 2319 zb->zb_count++; 2320 2321 /* 2322 * The histogram is only big enough to record blocks up to 2323 * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last, 2324 * "other", bucket. 2325 */ 2326 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT; 2327 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1); 2328 zb->zb_psize_histogram[idx]++; 2329 2330 zb->zb_gangs += BP_COUNT_GANG(bp); 2331 2332 switch (BP_GET_NDVAS(bp)) { 2333 case 2: 2334 if (DVA_GET_VDEV(&bp->blk_dva[0]) == 2335 DVA_GET_VDEV(&bp->blk_dva[1])) 2336 zb->zb_ditto_samevdev++; 2337 break; 2338 case 3: 2339 equal = (DVA_GET_VDEV(&bp->blk_dva[0]) == 2340 DVA_GET_VDEV(&bp->blk_dva[1])) + 2341 (DVA_GET_VDEV(&bp->blk_dva[0]) == 2342 DVA_GET_VDEV(&bp->blk_dva[2])) + 2343 (DVA_GET_VDEV(&bp->blk_dva[1]) == 2344 DVA_GET_VDEV(&bp->blk_dva[2])); 2345 if (equal != 0) 2346 zb->zb_ditto_samevdev++; 2347 break; 2348 } 2349 2350 } 2351 2352 if (BP_IS_EMBEDDED(bp)) { 2353 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++; 2354 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)] 2355 [BPE_GET_PSIZE(bp)]++; 2356 return; 2357 } 2358 2359 if (dump_opt['L']) 2360 return; 2361 2362 if (BP_GET_DEDUP(bp)) { 2363 ddt_t *ddt; 2364 ddt_entry_t *dde; 2365 2366 ddt = ddt_select(zcb->zcb_spa, bp); 2367 ddt_enter(ddt); 2368 dde = ddt_lookup(ddt, bp, B_FALSE); 2369 2370 if (dde == NULL) { 2371 refcnt = 0; 2372 } else { 2373 ddt_phys_t *ddp = ddt_phys_select(dde, bp); 2374 ddt_phys_decref(ddp); 2375 refcnt = ddp->ddp_refcnt; 2376 if (ddt_phys_total_refcnt(dde) == 0) 2377 ddt_remove(ddt, dde); 2378 } 2379 ddt_exit(ddt); 2380 } 2381 2382 VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa, 2383 refcnt ? 0 : spa_first_txg(zcb->zcb_spa), 2384 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0); 2385 } 2386 2387 static void 2388 zdb_blkptr_done(zio_t *zio) 2389 { 2390 spa_t *spa = zio->io_spa; 2391 blkptr_t *bp = zio->io_bp; 2392 int ioerr = zio->io_error; 2393 zdb_cb_t *zcb = zio->io_private; 2394 zbookmark_phys_t *zb = &zio->io_bookmark; 2395 2396 zio_data_buf_free(zio->io_data, zio->io_size); 2397 2398 mutex_enter(&spa->spa_scrub_lock); 2399 spa->spa_scrub_inflight--; 2400 cv_broadcast(&spa->spa_scrub_io_cv); 2401 2402 if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { 2403 char blkbuf[BP_SPRINTF_LEN]; 2404 2405 zcb->zcb_haderrors = 1; 2406 zcb->zcb_errors[ioerr]++; 2407 2408 if (dump_opt['b'] >= 2) 2409 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2410 else 2411 blkbuf[0] = '\0'; 2412 2413 (void) printf("zdb_blkptr_cb: " 2414 "Got error %d reading " 2415 "<%llu, %llu, %lld, %llx> %s -- skipping\n", 2416 ioerr, 2417 (u_longlong_t)zb->zb_objset, 2418 (u_longlong_t)zb->zb_object, 2419 (u_longlong_t)zb->zb_level, 2420 (u_longlong_t)zb->zb_blkid, 2421 blkbuf); 2422 } 2423 mutex_exit(&spa->spa_scrub_lock); 2424 } 2425 2426 static int 2427 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2428 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 2429 { 2430 zdb_cb_t *zcb = arg; 2431 dmu_object_type_t type; 2432 boolean_t is_metadata; 2433 2434 if (bp == NULL) 2435 return (0); 2436 2437 if (dump_opt['b'] >= 5 && bp->blk_birth > 0) { 2438 char blkbuf[BP_SPRINTF_LEN]; 2439 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2440 (void) printf("objset %llu object %llu " 2441 "level %lld offset 0x%llx %s\n", 2442 (u_longlong_t)zb->zb_objset, 2443 (u_longlong_t)zb->zb_object, 2444 (longlong_t)zb->zb_level, 2445 (u_longlong_t)blkid2offset(dnp, bp, zb), 2446 blkbuf); 2447 } 2448 2449 if (BP_IS_HOLE(bp)) 2450 return (0); 2451 2452 type = BP_GET_TYPE(bp); 2453 2454 zdb_count_block(zcb, zilog, bp, 2455 (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type); 2456 2457 is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)); 2458 2459 if (!BP_IS_EMBEDDED(bp) && 2460 (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) { 2461 size_t size = BP_GET_PSIZE(bp); 2462 void *data = zio_data_buf_alloc(size); 2463 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW; 2464 2465 /* If it's an intent log block, failure is expected. */ 2466 if (zb->zb_level == ZB_ZIL_LEVEL) 2467 flags |= ZIO_FLAG_SPECULATIVE; 2468 2469 mutex_enter(&spa->spa_scrub_lock); 2470 while (spa->spa_scrub_inflight > max_inflight) 2471 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); 2472 spa->spa_scrub_inflight++; 2473 mutex_exit(&spa->spa_scrub_lock); 2474 2475 zio_nowait(zio_read(NULL, spa, bp, data, size, 2476 zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb)); 2477 } 2478 2479 zcb->zcb_readfails = 0; 2480 2481 /* only call gethrtime() every 100 blocks */ 2482 static int iters; 2483 if (++iters > 100) 2484 iters = 0; 2485 else 2486 return (0); 2487 2488 if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) { 2489 uint64_t now = gethrtime(); 2490 char buf[10]; 2491 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize; 2492 int kb_per_sec = 2493 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000)); 2494 int sec_remaining = 2495 (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec; 2496 2497 zfs_nicenum(bytes, buf, sizeof (buf)); 2498 (void) fprintf(stderr, 2499 "\r%5s completed (%4dMB/s) " 2500 "estimated time remaining: %uhr %02umin %02usec ", 2501 buf, kb_per_sec / 1024, 2502 sec_remaining / 60 / 60, 2503 sec_remaining / 60 % 60, 2504 sec_remaining % 60); 2505 2506 zcb->zcb_lastprint = now; 2507 } 2508 2509 return (0); 2510 } 2511 2512 static void 2513 zdb_leak(void *arg, uint64_t start, uint64_t size) 2514 { 2515 vdev_t *vd = arg; 2516 2517 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 2518 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size); 2519 } 2520 2521 static metaslab_ops_t zdb_metaslab_ops = { 2522 NULL /* alloc */ 2523 }; 2524 2525 static void 2526 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb) 2527 { 2528 ddt_bookmark_t ddb = { 0 }; 2529 ddt_entry_t dde; 2530 int error; 2531 2532 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) { 2533 blkptr_t blk; 2534 ddt_phys_t *ddp = dde.dde_phys; 2535 2536 if (ddb.ddb_class == DDT_CLASS_UNIQUE) 2537 return; 2538 2539 ASSERT(ddt_phys_total_refcnt(&dde) > 1); 2540 2541 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 2542 if (ddp->ddp_phys_birth == 0) 2543 continue; 2544 ddt_bp_create(ddb.ddb_checksum, 2545 &dde.dde_key, ddp, &blk); 2546 if (p == DDT_PHYS_DITTO) { 2547 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO); 2548 } else { 2549 zcb->zcb_dedup_asize += 2550 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1); 2551 zcb->zcb_dedup_blocks++; 2552 } 2553 } 2554 if (!dump_opt['L']) { 2555 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum]; 2556 ddt_enter(ddt); 2557 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL); 2558 ddt_exit(ddt); 2559 } 2560 } 2561 2562 ASSERT(error == ENOENT); 2563 } 2564 2565 static void 2566 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb) 2567 { 2568 zcb->zcb_spa = spa; 2569 2570 if (!dump_opt['L']) { 2571 vdev_t *rvd = spa->spa_root_vdev; 2572 for (uint64_t c = 0; c < rvd->vdev_children; c++) { 2573 vdev_t *vd = rvd->vdev_child[c]; 2574 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 2575 metaslab_t *msp = vd->vdev_ms[m]; 2576 mutex_enter(&msp->ms_lock); 2577 metaslab_unload(msp); 2578 2579 /* 2580 * For leak detection, we overload the metaslab 2581 * ms_tree to contain allocated segments 2582 * instead of free segments. As a result, 2583 * we can't use the normal metaslab_load/unload 2584 * interfaces. 2585 */ 2586 if (msp->ms_sm != NULL) { 2587 (void) fprintf(stderr, 2588 "\rloading space map for " 2589 "vdev %llu of %llu, " 2590 "metaslab %llu of %llu ...", 2591 (longlong_t)c, 2592 (longlong_t)rvd->vdev_children, 2593 (longlong_t)m, 2594 (longlong_t)vd->vdev_ms_count); 2595 2596 msp->ms_ops = &zdb_metaslab_ops; 2597 2598 /* 2599 * We don't want to spend the CPU 2600 * manipulating the size-ordered 2601 * tree, so clear the range_tree 2602 * ops. 2603 */ 2604 msp->ms_tree->rt_ops = NULL; 2605 VERIFY0(space_map_load(msp->ms_sm, 2606 msp->ms_tree, SM_ALLOC)); 2607 msp->ms_loaded = B_TRUE; 2608 } 2609 mutex_exit(&msp->ms_lock); 2610 } 2611 } 2612 (void) fprintf(stderr, "\n"); 2613 } 2614 2615 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2616 2617 zdb_ddt_leak_init(spa, zcb); 2618 2619 spa_config_exit(spa, SCL_CONFIG, FTAG); 2620 } 2621 2622 static void 2623 zdb_leak_fini(spa_t *spa) 2624 { 2625 if (!dump_opt['L']) { 2626 vdev_t *rvd = spa->spa_root_vdev; 2627 for (int c = 0; c < rvd->vdev_children; c++) { 2628 vdev_t *vd = rvd->vdev_child[c]; 2629 for (int m = 0; m < vd->vdev_ms_count; m++) { 2630 metaslab_t *msp = vd->vdev_ms[m]; 2631 mutex_enter(&msp->ms_lock); 2632 2633 /* 2634 * The ms_tree has been overloaded to 2635 * contain allocated segments. Now that we 2636 * finished traversing all blocks, any 2637 * block that remains in the ms_tree 2638 * represents an allocated block that we 2639 * did not claim during the traversal. 2640 * Claimed blocks would have been removed 2641 * from the ms_tree. 2642 */ 2643 range_tree_vacate(msp->ms_tree, zdb_leak, vd); 2644 msp->ms_loaded = B_FALSE; 2645 2646 mutex_exit(&msp->ms_lock); 2647 } 2648 } 2649 } 2650 } 2651 2652 /* ARGSUSED */ 2653 static int 2654 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 2655 { 2656 zdb_cb_t *zcb = arg; 2657 2658 if (dump_opt['b'] >= 5) { 2659 char blkbuf[BP_SPRINTF_LEN]; 2660 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2661 (void) printf("[%s] %s\n", 2662 "deferred free", blkbuf); 2663 } 2664 zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED); 2665 return (0); 2666 } 2667 2668 static int 2669 dump_block_stats(spa_t *spa) 2670 { 2671 zdb_cb_t zcb = { 0 }; 2672 zdb_blkstats_t *zb, *tzb; 2673 uint64_t norm_alloc, norm_space, total_alloc, total_found; 2674 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD; 2675 boolean_t leaks = B_FALSE; 2676 2677 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n", 2678 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "", 2679 (dump_opt['c'] == 1) ? "metadata " : "", 2680 dump_opt['c'] ? "checksums " : "", 2681 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "", 2682 !dump_opt['L'] ? "nothing leaked " : ""); 2683 2684 /* 2685 * Load all space maps as SM_ALLOC maps, then traverse the pool 2686 * claiming each block we discover. If the pool is perfectly 2687 * consistent, the space maps will be empty when we're done. 2688 * Anything left over is a leak; any block we can't claim (because 2689 * it's not part of any space map) is a double allocation, 2690 * reference to a freed block, or an unclaimed log block. 2691 */ 2692 zdb_leak_init(spa, &zcb); 2693 2694 /* 2695 * If there's a deferred-free bplist, process that first. 2696 */ 2697 (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj, 2698 count_block_cb, &zcb, NULL); 2699 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 2700 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj, 2701 count_block_cb, &zcb, NULL); 2702 } 2703 if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) { 2704 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset, 2705 spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb, 2706 &zcb, NULL)); 2707 } 2708 2709 if (dump_opt['c'] > 1) 2710 flags |= TRAVERSE_PREFETCH_DATA; 2711 2712 zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa)); 2713 zcb.zcb_start = zcb.zcb_lastprint = gethrtime(); 2714 zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb); 2715 2716 /* 2717 * If we've traversed the data blocks then we need to wait for those 2718 * I/Os to complete. We leverage "The Godfather" zio to wait on 2719 * all async I/Os to complete. 2720 */ 2721 if (dump_opt['c']) { 2722 for (int i = 0; i < max_ncpus; i++) { 2723 (void) zio_wait(spa->spa_async_zio_root[i]); 2724 spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, 2725 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | 2726 ZIO_FLAG_GODFATHER); 2727 } 2728 } 2729 2730 if (zcb.zcb_haderrors) { 2731 (void) printf("\nError counts:\n\n"); 2732 (void) printf("\t%5s %s\n", "errno", "count"); 2733 for (int e = 0; e < 256; e++) { 2734 if (zcb.zcb_errors[e] != 0) { 2735 (void) printf("\t%5d %llu\n", 2736 e, (u_longlong_t)zcb.zcb_errors[e]); 2737 } 2738 } 2739 } 2740 2741 /* 2742 * Report any leaked segments. 2743 */ 2744 zdb_leak_fini(spa); 2745 2746 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL]; 2747 2748 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 2749 norm_space = metaslab_class_get_space(spa_normal_class(spa)); 2750 2751 total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa)); 2752 total_found = tzb->zb_asize - zcb.zcb_dedup_asize; 2753 2754 if (total_found == total_alloc) { 2755 if (!dump_opt['L']) 2756 (void) printf("\n\tNo leaks (block sum matches space" 2757 " maps exactly)\n"); 2758 } else { 2759 (void) printf("block traversal size %llu != alloc %llu " 2760 "(%s %lld)\n", 2761 (u_longlong_t)total_found, 2762 (u_longlong_t)total_alloc, 2763 (dump_opt['L']) ? "unreachable" : "leaked", 2764 (longlong_t)(total_alloc - total_found)); 2765 leaks = B_TRUE; 2766 } 2767 2768 if (tzb->zb_count == 0) 2769 return (2); 2770 2771 (void) printf("\n"); 2772 (void) printf("\tbp count: %10llu\n", 2773 (u_longlong_t)tzb->zb_count); 2774 (void) printf("\tganged count: %10llu\n", 2775 (longlong_t)tzb->zb_gangs); 2776 (void) printf("\tbp logical: %10llu avg: %6llu\n", 2777 (u_longlong_t)tzb->zb_lsize, 2778 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 2779 (void) printf("\tbp physical: %10llu avg:" 2780 " %6llu compression: %6.2f\n", 2781 (u_longlong_t)tzb->zb_psize, 2782 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 2783 (double)tzb->zb_lsize / tzb->zb_psize); 2784 (void) printf("\tbp allocated: %10llu avg:" 2785 " %6llu compression: %6.2f\n", 2786 (u_longlong_t)tzb->zb_asize, 2787 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 2788 (double)tzb->zb_lsize / tzb->zb_asize); 2789 (void) printf("\tbp deduped: %10llu ref>1:" 2790 " %6llu deduplication: %6.2f\n", 2791 (u_longlong_t)zcb.zcb_dedup_asize, 2792 (u_longlong_t)zcb.zcb_dedup_blocks, 2793 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0); 2794 (void) printf("\tSPA allocated: %10llu used: %5.2f%%\n", 2795 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space); 2796 2797 for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) { 2798 if (zcb.zcb_embedded_blocks[i] == 0) 2799 continue; 2800 (void) printf("\n"); 2801 (void) printf("\tadditional, non-pointer bps of type %u: " 2802 "%10llu\n", 2803 i, (u_longlong_t)zcb.zcb_embedded_blocks[i]); 2804 2805 if (dump_opt['b'] >= 3) { 2806 (void) printf("\t number of (compressed) bytes: " 2807 "number of bps\n"); 2808 dump_histogram(zcb.zcb_embedded_histogram[i], 2809 sizeof (zcb.zcb_embedded_histogram[i]) / 2810 sizeof (zcb.zcb_embedded_histogram[i][0]), 0); 2811 } 2812 } 2813 2814 if (tzb->zb_ditto_samevdev != 0) { 2815 (void) printf("\tDittoed blocks on same vdev: %llu\n", 2816 (longlong_t)tzb->zb_ditto_samevdev); 2817 } 2818 2819 if (dump_opt['b'] >= 2) { 2820 int l, t, level; 2821 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 2822 "\t avg\t comp\t%%Total\tType\n"); 2823 2824 for (t = 0; t <= ZDB_OT_TOTAL; t++) { 2825 char csize[32], lsize[32], psize[32], asize[32]; 2826 char avg[32], gang[32]; 2827 char *typename; 2828 2829 if (t < DMU_OT_NUMTYPES) 2830 typename = dmu_ot[t].ot_name; 2831 else 2832 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES]; 2833 2834 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 2835 (void) printf("%6s\t%5s\t%5s\t%5s" 2836 "\t%5s\t%5s\t%6s\t%s\n", 2837 "-", 2838 "-", 2839 "-", 2840 "-", 2841 "-", 2842 "-", 2843 "-", 2844 typename); 2845 continue; 2846 } 2847 2848 for (l = ZB_TOTAL - 1; l >= -1; l--) { 2849 level = (l == -1 ? ZB_TOTAL : l); 2850 zb = &zcb.zcb_type[level][t]; 2851 2852 if (zb->zb_asize == 0) 2853 continue; 2854 2855 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 2856 continue; 2857 2858 if (level == 0 && zb->zb_asize == 2859 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 2860 continue; 2861 2862 zdb_nicenum(zb->zb_count, csize); 2863 zdb_nicenum(zb->zb_lsize, lsize); 2864 zdb_nicenum(zb->zb_psize, psize); 2865 zdb_nicenum(zb->zb_asize, asize); 2866 zdb_nicenum(zb->zb_asize / zb->zb_count, avg); 2867 zdb_nicenum(zb->zb_gangs, gang); 2868 2869 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 2870 "\t%5.2f\t%6.2f\t", 2871 csize, lsize, psize, asize, avg, 2872 (double)zb->zb_lsize / zb->zb_psize, 2873 100.0 * zb->zb_asize / tzb->zb_asize); 2874 2875 if (level == ZB_TOTAL) 2876 (void) printf("%s\n", typename); 2877 else 2878 (void) printf(" L%d %s\n", 2879 level, typename); 2880 2881 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) { 2882 (void) printf("\t number of ganged " 2883 "blocks: %s\n", gang); 2884 } 2885 2886 if (dump_opt['b'] >= 4) { 2887 (void) printf("psize " 2888 "(in 512-byte sectors): " 2889 "number of blocks\n"); 2890 dump_histogram(zb->zb_psize_histogram, 2891 PSIZE_HISTO_SIZE, 0); 2892 } 2893 } 2894 } 2895 } 2896 2897 (void) printf("\n"); 2898 2899 if (leaks) 2900 return (2); 2901 2902 if (zcb.zcb_haderrors) 2903 return (3); 2904 2905 return (0); 2906 } 2907 2908 typedef struct zdb_ddt_entry { 2909 ddt_key_t zdde_key; 2910 uint64_t zdde_ref_blocks; 2911 uint64_t zdde_ref_lsize; 2912 uint64_t zdde_ref_psize; 2913 uint64_t zdde_ref_dsize; 2914 avl_node_t zdde_node; 2915 } zdb_ddt_entry_t; 2916 2917 /* ARGSUSED */ 2918 static int 2919 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2920 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 2921 { 2922 avl_tree_t *t = arg; 2923 avl_index_t where; 2924 zdb_ddt_entry_t *zdde, zdde_search; 2925 2926 if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp)) 2927 return (0); 2928 2929 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) { 2930 (void) printf("traversing objset %llu, %llu objects, " 2931 "%lu blocks so far\n", 2932 (u_longlong_t)zb->zb_objset, 2933 (u_longlong_t)BP_GET_FILL(bp), 2934 avl_numnodes(t)); 2935 } 2936 2937 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF || 2938 BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) 2939 return (0); 2940 2941 ddt_key_fill(&zdde_search.zdde_key, bp); 2942 2943 zdde = avl_find(t, &zdde_search, &where); 2944 2945 if (zdde == NULL) { 2946 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL); 2947 zdde->zdde_key = zdde_search.zdde_key; 2948 avl_insert(t, zdde, where); 2949 } 2950 2951 zdde->zdde_ref_blocks += 1; 2952 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp); 2953 zdde->zdde_ref_psize += BP_GET_PSIZE(bp); 2954 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp); 2955 2956 return (0); 2957 } 2958 2959 static void 2960 dump_simulated_ddt(spa_t *spa) 2961 { 2962 avl_tree_t t; 2963 void *cookie = NULL; 2964 zdb_ddt_entry_t *zdde; 2965 ddt_histogram_t ddh_total = { 0 }; 2966 ddt_stat_t dds_total = { 0 }; 2967 2968 avl_create(&t, ddt_entry_compare, 2969 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node)); 2970 2971 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2972 2973 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA, 2974 zdb_ddt_add_cb, &t); 2975 2976 spa_config_exit(spa, SCL_CONFIG, FTAG); 2977 2978 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) { 2979 ddt_stat_t dds; 2980 uint64_t refcnt = zdde->zdde_ref_blocks; 2981 ASSERT(refcnt != 0); 2982 2983 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt; 2984 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt; 2985 dds.dds_psize = zdde->zdde_ref_psize / refcnt; 2986 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt; 2987 2988 dds.dds_ref_blocks = zdde->zdde_ref_blocks; 2989 dds.dds_ref_lsize = zdde->zdde_ref_lsize; 2990 dds.dds_ref_psize = zdde->zdde_ref_psize; 2991 dds.dds_ref_dsize = zdde->zdde_ref_dsize; 2992 2993 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1], 2994 &dds, 0); 2995 2996 umem_free(zdde, sizeof (*zdde)); 2997 } 2998 2999 avl_destroy(&t); 3000 3001 ddt_histogram_stat(&dds_total, &ddh_total); 3002 3003 (void) printf("Simulated DDT histogram:\n"); 3004 3005 zpool_dump_ddt(&dds_total, &ddh_total); 3006 3007 dump_dedup_ratio(&dds_total); 3008 } 3009 3010 static void 3011 dump_zpool(spa_t *spa) 3012 { 3013 dsl_pool_t *dp = spa_get_dsl(spa); 3014 int rc = 0; 3015 3016 if (dump_opt['S']) { 3017 dump_simulated_ddt(spa); 3018 return; 3019 } 3020 3021 if (!dump_opt['e'] && dump_opt['C'] > 1) { 3022 (void) printf("\nCached configuration:\n"); 3023 dump_nvlist(spa->spa_config, 8); 3024 } 3025 3026 if (dump_opt['C']) 3027 dump_config(spa); 3028 3029 if (dump_opt['u']) 3030 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n"); 3031 3032 if (dump_opt['D']) 3033 dump_all_ddts(spa); 3034 3035 if (dump_opt['d'] > 2 || dump_opt['m']) 3036 dump_metaslabs(spa); 3037 if (dump_opt['M']) 3038 dump_metaslab_groups(spa); 3039 3040 if (dump_opt['d'] || dump_opt['i']) { 3041 dump_dir(dp->dp_meta_objset); 3042 if (dump_opt['d'] >= 3) { 3043 dump_full_bpobj(&spa->spa_deferred_bpobj, 3044 "Deferred frees", 0); 3045 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 3046 dump_full_bpobj( 3047 &spa->spa_dsl_pool->dp_free_bpobj, 3048 "Pool snapshot frees", 0); 3049 } 3050 3051 if (spa_feature_is_active(spa, 3052 SPA_FEATURE_ASYNC_DESTROY)) { 3053 dump_bptree(spa->spa_meta_objset, 3054 spa->spa_dsl_pool->dp_bptree_obj, 3055 "Pool dataset frees"); 3056 } 3057 dump_dtl(spa->spa_root_vdev, 0); 3058 } 3059 (void) dmu_objset_find(spa_name(spa), dump_one_dir, 3060 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 3061 3062 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 3063 uint64_t refcount; 3064 3065 if (!(spa_feature_table[f].fi_flags & 3066 ZFEATURE_FLAG_PER_DATASET) || 3067 !spa_feature_is_enabled(spa, f)) { 3068 ASSERT0(dataset_feature_count[f]); 3069 continue; 3070 } 3071 (void) feature_get_refcount(spa, 3072 &spa_feature_table[f], &refcount); 3073 if (dataset_feature_count[f] != refcount) { 3074 (void) printf("%s feature refcount mismatch: " 3075 "%lld datasets != %lld refcount\n", 3076 spa_feature_table[f].fi_uname, 3077 (longlong_t)dataset_feature_count[f], 3078 (longlong_t)refcount); 3079 rc = 2; 3080 } else { 3081 (void) printf("Verified %s feature refcount " 3082 "of %llu is correct\n", 3083 spa_feature_table[f].fi_uname, 3084 (longlong_t)refcount); 3085 } 3086 } 3087 } 3088 if (rc == 0 && (dump_opt['b'] || dump_opt['c'])) 3089 rc = dump_block_stats(spa); 3090 3091 if (rc == 0) 3092 rc = verify_spacemap_refcounts(spa); 3093 3094 if (dump_opt['s']) 3095 show_pool_stats(spa); 3096 3097 if (dump_opt['h']) 3098 dump_history(spa); 3099 3100 if (rc != 0) { 3101 dump_debug_buffer(); 3102 exit(rc); 3103 } 3104 } 3105 3106 #define ZDB_FLAG_CHECKSUM 0x0001 3107 #define ZDB_FLAG_DECOMPRESS 0x0002 3108 #define ZDB_FLAG_BSWAP 0x0004 3109 #define ZDB_FLAG_GBH 0x0008 3110 #define ZDB_FLAG_INDIRECT 0x0010 3111 #define ZDB_FLAG_PHYS 0x0020 3112 #define ZDB_FLAG_RAW 0x0040 3113 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 3114 3115 int flagbits[256]; 3116 3117 static void 3118 zdb_print_blkptr(blkptr_t *bp, int flags) 3119 { 3120 char blkbuf[BP_SPRINTF_LEN]; 3121 3122 if (flags & ZDB_FLAG_BSWAP) 3123 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 3124 3125 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3126 (void) printf("%s\n", blkbuf); 3127 } 3128 3129 static void 3130 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 3131 { 3132 int i; 3133 3134 for (i = 0; i < nbps; i++) 3135 zdb_print_blkptr(&bp[i], flags); 3136 } 3137 3138 static void 3139 zdb_dump_gbh(void *buf, int flags) 3140 { 3141 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 3142 } 3143 3144 static void 3145 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 3146 { 3147 if (flags & ZDB_FLAG_BSWAP) 3148 byteswap_uint64_array(buf, size); 3149 (void) write(1, buf, size); 3150 } 3151 3152 static void 3153 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 3154 { 3155 uint64_t *d = (uint64_t *)buf; 3156 int nwords = size / sizeof (uint64_t); 3157 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 3158 int i, j; 3159 char *hdr, *c; 3160 3161 3162 if (do_bswap) 3163 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 3164 else 3165 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 3166 3167 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 3168 3169 for (i = 0; i < nwords; i += 2) { 3170 (void) printf("%06llx: %016llx %016llx ", 3171 (u_longlong_t)(i * sizeof (uint64_t)), 3172 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 3173 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 3174 3175 c = (char *)&d[i]; 3176 for (j = 0; j < 2 * sizeof (uint64_t); j++) 3177 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 3178 (void) printf("\n"); 3179 } 3180 } 3181 3182 /* 3183 * There are two acceptable formats: 3184 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 3185 * child[.child]* - For example: 0.1.1 3186 * 3187 * The second form can be used to specify arbitrary vdevs anywhere 3188 * in the heirarchy. For example, in a pool with a mirror of 3189 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 3190 */ 3191 static vdev_t * 3192 zdb_vdev_lookup(vdev_t *vdev, char *path) 3193 { 3194 char *s, *p, *q; 3195 int i; 3196 3197 if (vdev == NULL) 3198 return (NULL); 3199 3200 /* First, assume the x.x.x.x format */ 3201 i = (int)strtoul(path, &s, 10); 3202 if (s == path || (s && *s != '.' && *s != '\0')) 3203 goto name; 3204 if (i < 0 || i >= vdev->vdev_children) 3205 return (NULL); 3206 3207 vdev = vdev->vdev_child[i]; 3208 if (*s == '\0') 3209 return (vdev); 3210 return (zdb_vdev_lookup(vdev, s+1)); 3211 3212 name: 3213 for (i = 0; i < vdev->vdev_children; i++) { 3214 vdev_t *vc = vdev->vdev_child[i]; 3215 3216 if (vc->vdev_path == NULL) { 3217 vc = zdb_vdev_lookup(vc, path); 3218 if (vc == NULL) 3219 continue; 3220 else 3221 return (vc); 3222 } 3223 3224 p = strrchr(vc->vdev_path, '/'); 3225 p = p ? p + 1 : vc->vdev_path; 3226 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 3227 3228 if (strcmp(vc->vdev_path, path) == 0) 3229 return (vc); 3230 if (strcmp(p, path) == 0) 3231 return (vc); 3232 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 3233 return (vc); 3234 } 3235 3236 return (NULL); 3237 } 3238 3239 /* 3240 * Read a block from a pool and print it out. The syntax of the 3241 * block descriptor is: 3242 * 3243 * pool:vdev_specifier:offset:size[:flags] 3244 * 3245 * pool - The name of the pool you wish to read from 3246 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 3247 * offset - offset, in hex, in bytes 3248 * size - Amount of data to read, in hex, in bytes 3249 * flags - A string of characters specifying options 3250 * b: Decode a blkptr at given offset within block 3251 * *c: Calculate and display checksums 3252 * d: Decompress data before dumping 3253 * e: Byteswap data before dumping 3254 * g: Display data as a gang block header 3255 * i: Display as an indirect block 3256 * p: Do I/O to physical offset 3257 * r: Dump raw data to stdout 3258 * 3259 * * = not yet implemented 3260 */ 3261 static void 3262 zdb_read_block(char *thing, spa_t *spa) 3263 { 3264 blkptr_t blk, *bp = &blk; 3265 dva_t *dva = bp->blk_dva; 3266 int flags = 0; 3267 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0; 3268 zio_t *zio; 3269 vdev_t *vd; 3270 void *pbuf, *lbuf, *buf; 3271 char *s, *p, *dup, *vdev, *flagstr; 3272 int i, error; 3273 3274 dup = strdup(thing); 3275 s = strtok(dup, ":"); 3276 vdev = s ? s : ""; 3277 s = strtok(NULL, ":"); 3278 offset = strtoull(s ? s : "", NULL, 16); 3279 s = strtok(NULL, ":"); 3280 size = strtoull(s ? s : "", NULL, 16); 3281 s = strtok(NULL, ":"); 3282 flagstr = s ? s : ""; 3283 3284 s = NULL; 3285 if (size == 0) 3286 s = "size must not be zero"; 3287 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 3288 s = "size must be a multiple of sector size"; 3289 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 3290 s = "offset must be a multiple of sector size"; 3291 if (s) { 3292 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 3293 free(dup); 3294 return; 3295 } 3296 3297 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 3298 for (i = 0; flagstr[i]; i++) { 3299 int bit = flagbits[(uchar_t)flagstr[i]]; 3300 3301 if (bit == 0) { 3302 (void) printf("***Invalid flag: %c\n", 3303 flagstr[i]); 3304 continue; 3305 } 3306 flags |= bit; 3307 3308 /* If it's not something with an argument, keep going */ 3309 if ((bit & (ZDB_FLAG_CHECKSUM | 3310 ZDB_FLAG_PRINT_BLKPTR)) == 0) 3311 continue; 3312 3313 p = &flagstr[i + 1]; 3314 if (bit == ZDB_FLAG_PRINT_BLKPTR) 3315 blkptr_offset = strtoull(p, &p, 16); 3316 if (*p != ':' && *p != '\0') { 3317 (void) printf("***Invalid flag arg: '%s'\n", s); 3318 free(dup); 3319 return; 3320 } 3321 } 3322 } 3323 3324 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 3325 if (vd == NULL) { 3326 (void) printf("***Invalid vdev: %s\n", vdev); 3327 free(dup); 3328 return; 3329 } else { 3330 if (vd->vdev_path) 3331 (void) fprintf(stderr, "Found vdev: %s\n", 3332 vd->vdev_path); 3333 else 3334 (void) fprintf(stderr, "Found vdev type: %s\n", 3335 vd->vdev_ops->vdev_op_type); 3336 } 3337 3338 psize = size; 3339 lsize = size; 3340 3341 pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3342 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3343 3344 BP_ZERO(bp); 3345 3346 DVA_SET_VDEV(&dva[0], vd->vdev_id); 3347 DVA_SET_OFFSET(&dva[0], offset); 3348 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH)); 3349 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize)); 3350 3351 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL); 3352 3353 BP_SET_LSIZE(bp, lsize); 3354 BP_SET_PSIZE(bp, psize); 3355 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF); 3356 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF); 3357 BP_SET_TYPE(bp, DMU_OT_NONE); 3358 BP_SET_LEVEL(bp, 0); 3359 BP_SET_DEDUP(bp, 0); 3360 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER); 3361 3362 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 3363 zio = zio_root(spa, NULL, NULL, 0); 3364 3365 if (vd == vd->vdev_top) { 3366 /* 3367 * Treat this as a normal block read. 3368 */ 3369 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL, 3370 ZIO_PRIORITY_SYNC_READ, 3371 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL)); 3372 } else { 3373 /* 3374 * Treat this as a vdev child I/O. 3375 */ 3376 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize, 3377 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, 3378 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 3379 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | 3380 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL)); 3381 } 3382 3383 error = zio_wait(zio); 3384 spa_config_exit(spa, SCL_STATE, FTAG); 3385 3386 if (error) { 3387 (void) printf("Read of %s failed, error: %d\n", thing, error); 3388 goto out; 3389 } 3390 3391 if (flags & ZDB_FLAG_DECOMPRESS) { 3392 /* 3393 * We don't know how the data was compressed, so just try 3394 * every decompress function at every inflated blocksize. 3395 */ 3396 enum zio_compress c; 3397 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3398 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3399 3400 bcopy(pbuf, pbuf2, psize); 3401 3402 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize, 3403 SPA_MAXBLOCKSIZE - psize) == 0); 3404 3405 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize, 3406 SPA_MAXBLOCKSIZE - psize) == 0); 3407 3408 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize; 3409 lsize -= SPA_MINBLOCKSIZE) { 3410 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) { 3411 if (zio_decompress_data(c, pbuf, lbuf, 3412 psize, lsize) == 0 && 3413 zio_decompress_data(c, pbuf2, lbuf2, 3414 psize, lsize) == 0 && 3415 bcmp(lbuf, lbuf2, lsize) == 0) 3416 break; 3417 } 3418 if (c != ZIO_COMPRESS_FUNCTIONS) 3419 break; 3420 lsize -= SPA_MINBLOCKSIZE; 3421 } 3422 3423 umem_free(pbuf2, SPA_MAXBLOCKSIZE); 3424 umem_free(lbuf2, SPA_MAXBLOCKSIZE); 3425 3426 if (lsize <= psize) { 3427 (void) printf("Decompress of %s failed\n", thing); 3428 goto out; 3429 } 3430 buf = lbuf; 3431 size = lsize; 3432 } else { 3433 buf = pbuf; 3434 size = psize; 3435 } 3436 3437 if (flags & ZDB_FLAG_PRINT_BLKPTR) 3438 zdb_print_blkptr((blkptr_t *)(void *) 3439 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 3440 else if (flags & ZDB_FLAG_RAW) 3441 zdb_dump_block_raw(buf, size, flags); 3442 else if (flags & ZDB_FLAG_INDIRECT) 3443 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 3444 flags); 3445 else if (flags & ZDB_FLAG_GBH) 3446 zdb_dump_gbh(buf, flags); 3447 else 3448 zdb_dump_block(thing, buf, size, flags); 3449 3450 out: 3451 umem_free(pbuf, SPA_MAXBLOCKSIZE); 3452 umem_free(lbuf, SPA_MAXBLOCKSIZE); 3453 free(dup); 3454 } 3455 3456 static boolean_t 3457 pool_match(nvlist_t *cfg, char *tgt) 3458 { 3459 uint64_t v, guid = strtoull(tgt, NULL, 0); 3460 char *s; 3461 3462 if (guid != 0) { 3463 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0) 3464 return (v == guid); 3465 } else { 3466 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0) 3467 return (strcmp(s, tgt) == 0); 3468 } 3469 return (B_FALSE); 3470 } 3471 3472 static char * 3473 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv) 3474 { 3475 nvlist_t *pools; 3476 nvlist_t *match = NULL; 3477 char *name = NULL; 3478 char *sepp = NULL; 3479 char sep = '\0'; 3480 int count = 0; 3481 importargs_t args = { 0 }; 3482 3483 args.paths = dirc; 3484 args.path = dirv; 3485 args.can_be_active = B_TRUE; 3486 3487 if ((sepp = strpbrk(*target, "/@")) != NULL) { 3488 sep = *sepp; 3489 *sepp = '\0'; 3490 } 3491 3492 pools = zpool_search_import(g_zfs, &args); 3493 3494 if (pools != NULL) { 3495 nvpair_t *elem = NULL; 3496 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) { 3497 verify(nvpair_value_nvlist(elem, configp) == 0); 3498 if (pool_match(*configp, *target)) { 3499 count++; 3500 if (match != NULL) { 3501 /* print previously found config */ 3502 if (name != NULL) { 3503 (void) printf("%s\n", name); 3504 dump_nvlist(match, 8); 3505 name = NULL; 3506 } 3507 (void) printf("%s\n", 3508 nvpair_name(elem)); 3509 dump_nvlist(*configp, 8); 3510 } else { 3511 match = *configp; 3512 name = nvpair_name(elem); 3513 } 3514 } 3515 } 3516 } 3517 if (count > 1) 3518 (void) fatal("\tMatched %d pools - use pool GUID " 3519 "instead of pool name or \n" 3520 "\tpool name part of a dataset name to select pool", count); 3521 3522 if (sepp) 3523 *sepp = sep; 3524 /* 3525 * If pool GUID was specified for pool id, replace it with pool name 3526 */ 3527 if (name && (strstr(*target, name) != *target)) { 3528 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0); 3529 3530 *target = umem_alloc(sz, UMEM_NOFAIL); 3531 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : ""); 3532 } 3533 3534 *configp = name ? match : NULL; 3535 3536 return (name); 3537 } 3538 3539 int 3540 main(int argc, char **argv) 3541 { 3542 int i, c; 3543 struct rlimit rl = { 1024, 1024 }; 3544 spa_t *spa = NULL; 3545 objset_t *os = NULL; 3546 int dump_all = 1; 3547 int verbose = 0; 3548 int error = 0; 3549 char **searchdirs = NULL; 3550 int nsearch = 0; 3551 char *target; 3552 nvlist_t *policy = NULL; 3553 uint64_t max_txg = UINT64_MAX; 3554 int rewind = ZPOOL_NEVER_REWIND; 3555 char *spa_config_path_env; 3556 boolean_t target_is_spa = B_TRUE; 3557 3558 (void) setrlimit(RLIMIT_NOFILE, &rl); 3559 (void) enable_extended_FILE_stdio(-1, -1); 3560 3561 dprintf_setup(&argc, argv); 3562 3563 /* 3564 * If there is an environment variable SPA_CONFIG_PATH it overrides 3565 * default spa_config_path setting. If -U flag is specified it will 3566 * override this environment variable settings once again. 3567 */ 3568 spa_config_path_env = getenv("SPA_CONFIG_PATH"); 3569 if (spa_config_path_env != NULL) 3570 spa_config_path = spa_config_path_env; 3571 3572 while ((c = getopt(argc, argv, 3573 "bcdhilmMI:suCDRSAFLXx:evp:t:U:PGo:")) != -1) { 3574 switch (c) { 3575 case 'b': 3576 case 'c': 3577 case 'd': 3578 case 'h': 3579 case 'i': 3580 case 'l': 3581 case 'm': 3582 case 's': 3583 case 'u': 3584 case 'C': 3585 case 'D': 3586 case 'M': 3587 case 'R': 3588 case 'S': 3589 case 'G': 3590 dump_opt[c]++; 3591 dump_all = 0; 3592 break; 3593 case 'A': 3594 case 'F': 3595 case 'L': 3596 case 'X': 3597 case 'e': 3598 case 'P': 3599 dump_opt[c]++; 3600 break; 3601 case 'I': 3602 max_inflight = strtoull(optarg, NULL, 0); 3603 if (max_inflight == 0) { 3604 (void) fprintf(stderr, "maximum number " 3605 "of inflight I/Os must be greater " 3606 "than 0\n"); 3607 usage(); 3608 } 3609 break; 3610 case 'p': 3611 if (searchdirs == NULL) { 3612 searchdirs = umem_alloc(sizeof (char *), 3613 UMEM_NOFAIL); 3614 } else { 3615 char **tmp = umem_alloc((nsearch + 1) * 3616 sizeof (char *), UMEM_NOFAIL); 3617 bcopy(searchdirs, tmp, nsearch * 3618 sizeof (char *)); 3619 umem_free(searchdirs, 3620 nsearch * sizeof (char *)); 3621 searchdirs = tmp; 3622 } 3623 searchdirs[nsearch++] = optarg; 3624 break; 3625 case 't': 3626 max_txg = strtoull(optarg, NULL, 0); 3627 if (max_txg < TXG_INITIAL) { 3628 (void) fprintf(stderr, "incorrect txg " 3629 "specified: %s\n", optarg); 3630 usage(); 3631 } 3632 break; 3633 case 'U': 3634 spa_config_path = optarg; 3635 break; 3636 case 'v': 3637 verbose++; 3638 break; 3639 case 'x': 3640 vn_dumpdir = optarg; 3641 break; 3642 case 'o': 3643 error = set_global_var(optarg); 3644 if (error != 0) 3645 usage(); 3646 break; 3647 default: 3648 usage(); 3649 break; 3650 } 3651 } 3652 3653 if (!dump_opt['e'] && searchdirs != NULL) { 3654 (void) fprintf(stderr, "-p option requires use of -e\n"); 3655 usage(); 3656 } 3657 3658 /* 3659 * ZDB does not typically re-read blocks; therefore limit the ARC 3660 * to 256 MB, which can be used entirely for metadata. 3661 */ 3662 zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024; 3663 3664 /* 3665 * "zdb -c" uses checksum-verifying scrub i/os which are async reads. 3666 * "zdb -b" uses traversal prefetch which uses async reads. 3667 * For good performance, let several of them be active at once. 3668 */ 3669 zfs_vdev_async_read_max_active = 10; 3670 3671 /* 3672 * Disable reference tracking for better performance. 3673 */ 3674 reference_tracking_enable = B_FALSE; 3675 3676 kernel_init(FREAD); 3677 g_zfs = libzfs_init(); 3678 ASSERT(g_zfs != NULL); 3679 3680 if (dump_all) 3681 verbose = MAX(verbose, 1); 3682 3683 for (c = 0; c < 256; c++) { 3684 if (dump_all && !strchr("elAFLRSXP", c)) 3685 dump_opt[c] = 1; 3686 if (dump_opt[c]) 3687 dump_opt[c] += verbose; 3688 } 3689 3690 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2); 3691 zfs_recover = (dump_opt['A'] > 1); 3692 3693 argc -= optind; 3694 argv += optind; 3695 3696 if (argc < 2 && dump_opt['R']) 3697 usage(); 3698 if (argc < 1) { 3699 if (!dump_opt['e'] && dump_opt['C']) { 3700 dump_cachefile(spa_config_path); 3701 return (0); 3702 } 3703 usage(); 3704 } 3705 3706 if (dump_opt['l']) { 3707 dump_label(argv[0]); 3708 return (0); 3709 } 3710 3711 if (dump_opt['X'] || dump_opt['F']) 3712 rewind = ZPOOL_DO_REWIND | 3713 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0); 3714 3715 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 || 3716 nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 || 3717 nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0) 3718 fatal("internal error: %s", strerror(ENOMEM)); 3719 3720 error = 0; 3721 target = argv[0]; 3722 3723 if (dump_opt['e']) { 3724 nvlist_t *cfg = NULL; 3725 char *name = find_zpool(&target, &cfg, nsearch, searchdirs); 3726 3727 error = ENOENT; 3728 if (name) { 3729 if (dump_opt['C'] > 1) { 3730 (void) printf("\nConfiguration for import:\n"); 3731 dump_nvlist(cfg, 8); 3732 } 3733 if (nvlist_add_nvlist(cfg, 3734 ZPOOL_REWIND_POLICY, policy) != 0) { 3735 fatal("can't open '%s': %s", 3736 target, strerror(ENOMEM)); 3737 } 3738 if ((error = spa_import(name, cfg, NULL, 3739 ZFS_IMPORT_MISSING_LOG)) != 0) { 3740 error = spa_import(name, cfg, NULL, 3741 ZFS_IMPORT_VERBATIM); 3742 } 3743 } 3744 } 3745 3746 if (strpbrk(target, "/@") != NULL) { 3747 size_t targetlen; 3748 3749 target_is_spa = B_FALSE; 3750 /* 3751 * Remove any trailing slash. Later code would get confused 3752 * by it, but we want to allow it so that "pool/" can 3753 * indicate that we want to dump the topmost filesystem, 3754 * rather than the whole pool. 3755 */ 3756 targetlen = strlen(target); 3757 if (targetlen != 0 && target[targetlen - 1] == '/') 3758 target[targetlen - 1] = '\0'; 3759 } 3760 3761 if (error == 0) { 3762 if (target_is_spa || dump_opt['R']) { 3763 error = spa_open_rewind(target, &spa, FTAG, policy, 3764 NULL); 3765 if (error) { 3766 /* 3767 * If we're missing the log device then 3768 * try opening the pool after clearing the 3769 * log state. 3770 */ 3771 mutex_enter(&spa_namespace_lock); 3772 if ((spa = spa_lookup(target)) != NULL && 3773 spa->spa_log_state == SPA_LOG_MISSING) { 3774 spa->spa_log_state = SPA_LOG_CLEAR; 3775 error = 0; 3776 } 3777 mutex_exit(&spa_namespace_lock); 3778 3779 if (!error) { 3780 error = spa_open_rewind(target, &spa, 3781 FTAG, policy, NULL); 3782 } 3783 } 3784 } else { 3785 error = dmu_objset_own(target, DMU_OST_ANY, 3786 B_TRUE, FTAG, &os); 3787 } 3788 } 3789 nvlist_free(policy); 3790 3791 if (error) 3792 fatal("can't open '%s': %s", target, strerror(error)); 3793 3794 argv++; 3795 argc--; 3796 if (!dump_opt['R']) { 3797 if (argc > 0) { 3798 zopt_objects = argc; 3799 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 3800 for (i = 0; i < zopt_objects; i++) { 3801 errno = 0; 3802 zopt_object[i] = strtoull(argv[i], NULL, 0); 3803 if (zopt_object[i] == 0 && errno != 0) 3804 fatal("bad number %s: %s", 3805 argv[i], strerror(errno)); 3806 } 3807 } 3808 if (os != NULL) { 3809 dump_dir(os); 3810 } else if (zopt_objects > 0 && !dump_opt['m']) { 3811 dump_dir(spa->spa_meta_objset); 3812 } else { 3813 dump_zpool(spa); 3814 } 3815 } else { 3816 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 3817 flagbits['c'] = ZDB_FLAG_CHECKSUM; 3818 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 3819 flagbits['e'] = ZDB_FLAG_BSWAP; 3820 flagbits['g'] = ZDB_FLAG_GBH; 3821 flagbits['i'] = ZDB_FLAG_INDIRECT; 3822 flagbits['p'] = ZDB_FLAG_PHYS; 3823 flagbits['r'] = ZDB_FLAG_RAW; 3824 3825 for (i = 0; i < argc; i++) 3826 zdb_read_block(argv[i], spa); 3827 } 3828 3829 (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG); 3830 3831 fuid_table_destroy(); 3832 sa_loaded = B_FALSE; 3833 3834 dump_debug_buffer(); 3835 3836 libzfs_fini(g_zfs); 3837 kernel_fini(); 3838 3839 return (0); 3840 } 3841