zdb.c revision 319263
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 78extern boolean_t zfs_recover; 79extern uint64_t zfs_arc_max, zfs_arc_meta_limit; 80extern int zfs_vdev_async_read_max_active; 81#else 82boolean_t zfs_recover; 83uint64_t zfs_arc_max, zfs_arc_meta_limit; 84int zfs_vdev_async_read_max_active; 85#endif 86 87const char cmdname[] = "zdb"; 88uint8_t dump_opt[256]; 89 90typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); 91 92extern void dump_intent_log(zilog_t *); 93uint64_t *zopt_object = NULL; 94int zopt_objects = 0; 95libzfs_handle_t *g_zfs; 96uint64_t max_inflight = 1000; 97 98static void snprintf_blkptr_compact(char *, size_t, const blkptr_t *); 99 100/* 101 * These libumem hooks provide a reasonable set of defaults for the allocator's 102 * debugging facilities. 103 */ 104const char * 105_umem_debug_init() 106{ 107 return ("default,verbose"); /* $UMEM_DEBUG setting */ 108} 109 110const char * 111_umem_logging_init(void) 112{ 113 return ("fail,contents"); /* $UMEM_LOGGING setting */ 114} 115 116static void 117usage(void) 118{ 119 (void) fprintf(stderr, 120 "Usage: %s [-CumMdibcsDvhLXFPAG] [-t txg] [-e [-p path...]] " 121 "[-U config] [-I inflight I/Os] [-x dumpdir] poolname [object...]\n" 122 " %s [-divPA] [-e -p path...] [-U config] dataset " 123 "[object...]\n" 124 " %s -mM [-LXFPA] [-t txg] [-e [-p path...]] [-U config] " 125 "poolname [vdev [metaslab...]]\n" 126 " %s -R [-A] [-e [-p path...]] poolname " 127 "vdev:offset:size[:flags]\n" 128 " %s -S [-PA] [-e [-p path...]] [-U config] poolname\n" 129 " %s -l [-uA] device\n" 130 " %s -C [-A] [-U config]\n\n", 131 cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname); 132 133 (void) fprintf(stderr, " Dataset name must include at least one " 134 "separator character '/' or '@'\n"); 135 (void) fprintf(stderr, " If dataset name is specified, only that " 136 "dataset is dumped\n"); 137 (void) fprintf(stderr, " If object numbers are specified, only " 138 "those objects are dumped\n\n"); 139 (void) fprintf(stderr, " Options to control amount of output:\n"); 140 (void) fprintf(stderr, " -u uberblock\n"); 141 (void) fprintf(stderr, " -d dataset(s)\n"); 142 (void) fprintf(stderr, " -i intent logs\n"); 143 (void) fprintf(stderr, " -C config (or cachefile if alone)\n"); 144 (void) fprintf(stderr, " -h pool history\n"); 145 (void) fprintf(stderr, " -b block statistics\n"); 146 (void) fprintf(stderr, " -m metaslabs\n"); 147 (void) fprintf(stderr, " -M metaslab groups\n"); 148 (void) fprintf(stderr, " -c checksum all metadata (twice for " 149 "all data) blocks\n"); 150 (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); 151 (void) fprintf(stderr, " -D dedup statistics\n"); 152 (void) fprintf(stderr, " -S simulate dedup to measure effect\n"); 153 (void) fprintf(stderr, " -v verbose (applies to all others)\n"); 154 (void) fprintf(stderr, " -l dump label contents\n"); 155 (void) fprintf(stderr, " -L disable leak tracking (do not " 156 "load spacemaps)\n"); 157 (void) fprintf(stderr, " -R read and display block from a " 158 "device\n\n"); 159 (void) fprintf(stderr, " Below options are intended for use " 160 "with other options:\n"); 161 (void) fprintf(stderr, " -A ignore assertions (-A), enable " 162 "panic recovery (-AA) or both (-AAA)\n"); 163 (void) fprintf(stderr, " -F attempt automatic rewind within " 164 "safe range of transaction groups\n"); 165 (void) fprintf(stderr, " -U <cachefile_path> -- use alternate " 166 "cachefile\n"); 167 (void) fprintf(stderr, " -X attempt extreme rewind (does not " 168 "work with dataset)\n"); 169 (void) fprintf(stderr, " -e pool is exported/destroyed/" 170 "has altroot/not in a cachefile\n"); 171 (void) fprintf(stderr, " -p <path> -- use one or more with " 172 "-e to specify path to vdev dir\n"); 173 (void) fprintf(stderr, " -x <dumpdir> -- " 174 "dump all read blocks into specified directory\n"); 175 (void) fprintf(stderr, " -P print numbers in parseable form\n"); 176 (void) fprintf(stderr, " -t <txg> -- highest txg to use when " 177 "searching for uberblocks\n"); 178 (void) fprintf(stderr, " -I <number of inflight I/Os> -- " 179 "specify the maximum number of " 180 "checksumming I/Os [default is 200]\n"); 181 (void) fprintf(stderr, " -G dump zfs_dbgmsg buffer before " 182 "exiting\n"); 183 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " 184 "to make only that option verbose\n"); 185 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); 186 exit(1); 187} 188 189static void 190dump_debug_buffer() 191{ 192 if (dump_opt['G']) { 193 (void) printf("\n"); 194 zfs_dbgmsg_print("zdb"); 195 } 196} 197 198/* 199 * Called for usage errors that are discovered after a call to spa_open(), 200 * dmu_bonus_hold(), or pool_match(). abort() is called for other errors. 201 */ 202 203static void 204fatal(const char *fmt, ...) 205{ 206 va_list ap; 207 208 va_start(ap, fmt); 209 (void) fprintf(stderr, "%s: ", cmdname); 210 (void) vfprintf(stderr, fmt, ap); 211 va_end(ap); 212 (void) fprintf(stderr, "\n"); 213 214 dump_debug_buffer(); 215 216 exit(1); 217} 218 219/* ARGSUSED */ 220static void 221dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) 222{ 223 nvlist_t *nv; 224 size_t nvsize = *(uint64_t *)data; 225 char *packed = umem_alloc(nvsize, UMEM_NOFAIL); 226 227 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH)); 228 229 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); 230 231 umem_free(packed, nvsize); 232 233 dump_nvlist(nv, 8); 234 235 nvlist_free(nv); 236} 237 238/* ARGSUSED */ 239static void 240dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size) 241{ 242 spa_history_phys_t *shp = data; 243 244 if (shp == NULL) 245 return; 246 247 (void) printf("\t\tpool_create_len = %llu\n", 248 (u_longlong_t)shp->sh_pool_create_len); 249 (void) printf("\t\tphys_max_off = %llu\n", 250 (u_longlong_t)shp->sh_phys_max_off); 251 (void) printf("\t\tbof = %llu\n", 252 (u_longlong_t)shp->sh_bof); 253 (void) printf("\t\teof = %llu\n", 254 (u_longlong_t)shp->sh_eof); 255 (void) printf("\t\trecords_lost = %llu\n", 256 (u_longlong_t)shp->sh_records_lost); 257} 258 259static void 260zdb_nicenum(uint64_t num, char *buf) 261{ 262 if (dump_opt['P']) 263 (void) sprintf(buf, "%llu", (longlong_t)num); 264 else 265 nicenum(num, buf); 266} 267 268const char histo_stars[] = "****************************************"; 269const int histo_width = sizeof (histo_stars) - 1; 270 271static void 272dump_histogram(const uint64_t *histo, int size, int offset) 273{ 274 int i; 275 int minidx = size - 1; 276 int maxidx = 0; 277 uint64_t max = 0; 278 279 for (i = 0; i < size; i++) { 280 if (histo[i] > max) 281 max = histo[i]; 282 if (histo[i] > 0 && i > maxidx) 283 maxidx = i; 284 if (histo[i] > 0 && i < minidx) 285 minidx = i; 286 } 287 288 if (max < histo_width) 289 max = histo_width; 290 291 for (i = minidx; i <= maxidx; i++) { 292 (void) printf("\t\t\t%3u: %6llu %s\n", 293 i + offset, (u_longlong_t)histo[i], 294 &histo_stars[(max - histo[i]) * histo_width / max]); 295 } 296} 297 298static void 299dump_zap_stats(objset_t *os, uint64_t object) 300{ 301 int error; 302 zap_stats_t zs; 303 304 error = zap_get_stats(os, object, &zs); 305 if (error) 306 return; 307 308 if (zs.zs_ptrtbl_len == 0) { 309 ASSERT(zs.zs_num_blocks == 1); 310 (void) printf("\tmicrozap: %llu bytes, %llu entries\n", 311 (u_longlong_t)zs.zs_blocksize, 312 (u_longlong_t)zs.zs_num_entries); 313 return; 314 } 315 316 (void) printf("\tFat ZAP stats:\n"); 317 318 (void) printf("\t\tPointer table:\n"); 319 (void) printf("\t\t\t%llu elements\n", 320 (u_longlong_t)zs.zs_ptrtbl_len); 321 (void) printf("\t\t\tzt_blk: %llu\n", 322 (u_longlong_t)zs.zs_ptrtbl_zt_blk); 323 (void) printf("\t\t\tzt_numblks: %llu\n", 324 (u_longlong_t)zs.zs_ptrtbl_zt_numblks); 325 (void) printf("\t\t\tzt_shift: %llu\n", 326 (u_longlong_t)zs.zs_ptrtbl_zt_shift); 327 (void) printf("\t\t\tzt_blks_copied: %llu\n", 328 (u_longlong_t)zs.zs_ptrtbl_blks_copied); 329 (void) printf("\t\t\tzt_nextblk: %llu\n", 330 (u_longlong_t)zs.zs_ptrtbl_nextblk); 331 332 (void) printf("\t\tZAP entries: %llu\n", 333 (u_longlong_t)zs.zs_num_entries); 334 (void) printf("\t\tLeaf blocks: %llu\n", 335 (u_longlong_t)zs.zs_num_leafs); 336 (void) printf("\t\tTotal blocks: %llu\n", 337 (u_longlong_t)zs.zs_num_blocks); 338 (void) printf("\t\tzap_block_type: 0x%llx\n", 339 (u_longlong_t)zs.zs_block_type); 340 (void) printf("\t\tzap_magic: 0x%llx\n", 341 (u_longlong_t)zs.zs_magic); 342 (void) printf("\t\tzap_salt: 0x%llx\n", 343 (u_longlong_t)zs.zs_salt); 344 345 (void) printf("\t\tLeafs with 2^n pointers:\n"); 346 dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0); 347 348 (void) printf("\t\tBlocks with n*5 entries:\n"); 349 dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0); 350 351 (void) printf("\t\tBlocks n/10 full:\n"); 352 dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0); 353 354 (void) printf("\t\tEntries with n chunks:\n"); 355 dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0); 356 357 (void) printf("\t\tBuckets with n entries:\n"); 358 dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0); 359} 360 361/*ARGSUSED*/ 362static void 363dump_none(objset_t *os, uint64_t object, void *data, size_t size) 364{ 365} 366 367/*ARGSUSED*/ 368static void 369dump_unknown(objset_t *os, uint64_t object, void *data, size_t size) 370{ 371 (void) printf("\tUNKNOWN OBJECT TYPE\n"); 372} 373 374/*ARGSUSED*/ 375void 376dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) 377{ 378} 379 380/*ARGSUSED*/ 381static void 382dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) 383{ 384} 385 386/*ARGSUSED*/ 387static void 388dump_zap(objset_t *os, uint64_t object, void *data, size_t size) 389{ 390 zap_cursor_t zc; 391 zap_attribute_t attr; 392 void *prop; 393 int i; 394 395 dump_zap_stats(os, object); 396 (void) printf("\n"); 397 398 for (zap_cursor_init(&zc, os, object); 399 zap_cursor_retrieve(&zc, &attr) == 0; 400 zap_cursor_advance(&zc)) { 401 (void) printf("\t\t%s = ", attr.za_name); 402 if (attr.za_num_integers == 0) { 403 (void) printf("\n"); 404 continue; 405 } 406 prop = umem_zalloc(attr.za_num_integers * 407 attr.za_integer_length, UMEM_NOFAIL); 408 (void) zap_lookup(os, object, attr.za_name, 409 attr.za_integer_length, attr.za_num_integers, prop); 410 if (attr.za_integer_length == 1) { 411 (void) printf("%s", (char *)prop); 412 } else { 413 for (i = 0; i < attr.za_num_integers; i++) { 414 switch (attr.za_integer_length) { 415 case 2: 416 (void) printf("%u ", 417 ((uint16_t *)prop)[i]); 418 break; 419 case 4: 420 (void) printf("%u ", 421 ((uint32_t *)prop)[i]); 422 break; 423 case 8: 424 (void) printf("%lld ", 425 (u_longlong_t)((int64_t *)prop)[i]); 426 break; 427 } 428 } 429 } 430 (void) printf("\n"); 431 umem_free(prop, attr.za_num_integers * attr.za_integer_length); 432 } 433 zap_cursor_fini(&zc); 434} 435 436static void 437dump_bpobj(objset_t *os, uint64_t object, void *data, size_t size) 438{ 439 bpobj_phys_t *bpop = data; 440 char bytes[32], comp[32], uncomp[32]; 441 442 if (bpop == NULL) 443 return; 444 445 zdb_nicenum(bpop->bpo_bytes, bytes); 446 zdb_nicenum(bpop->bpo_comp, comp); 447 zdb_nicenum(bpop->bpo_uncomp, uncomp); 448 449 (void) printf("\t\tnum_blkptrs = %llu\n", 450 (u_longlong_t)bpop->bpo_num_blkptrs); 451 (void) printf("\t\tbytes = %s\n", bytes); 452 if (size >= BPOBJ_SIZE_V1) { 453 (void) printf("\t\tcomp = %s\n", comp); 454 (void) printf("\t\tuncomp = %s\n", uncomp); 455 } 456 if (size >= sizeof (*bpop)) { 457 (void) printf("\t\tsubobjs = %llu\n", 458 (u_longlong_t)bpop->bpo_subobjs); 459 (void) printf("\t\tnum_subobjs = %llu\n", 460 (u_longlong_t)bpop->bpo_num_subobjs); 461 } 462 463 if (dump_opt['d'] < 5) 464 return; 465 466 for (uint64_t i = 0; i < bpop->bpo_num_blkptrs; i++) { 467 char blkbuf[BP_SPRINTF_LEN]; 468 blkptr_t bp; 469 470 int err = dmu_read(os, object, 471 i * sizeof (bp), sizeof (bp), &bp, 0); 472 if (err != 0) { 473 (void) printf("got error %u from dmu_read\n", err); 474 break; 475 } 476 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), &bp); 477 (void) printf("\t%s\n", blkbuf); 478 } 479} 480 481/* ARGSUSED */ 482static void 483dump_bpobj_subobjs(objset_t *os, uint64_t object, void *data, size_t size) 484{ 485 dmu_object_info_t doi; 486 487 VERIFY0(dmu_object_info(os, object, &doi)); 488 uint64_t *subobjs = kmem_alloc(doi.doi_max_offset, KM_SLEEP); 489 490 int err = dmu_read(os, object, 0, doi.doi_max_offset, subobjs, 0); 491 if (err != 0) { 492 (void) printf("got error %u from dmu_read\n", err); 493 kmem_free(subobjs, doi.doi_max_offset); 494 return; 495 } 496 497 int64_t last_nonzero = -1; 498 for (uint64_t i = 0; i < doi.doi_max_offset / 8; i++) { 499 if (subobjs[i] != 0) 500 last_nonzero = i; 501 } 502 503 for (int64_t i = 0; i <= last_nonzero; i++) { 504 (void) printf("\t%llu\n", (longlong_t)subobjs[i]); 505 } 506 kmem_free(subobjs, doi.doi_max_offset); 507} 508 509/*ARGSUSED*/ 510static void 511dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size) 512{ 513 dump_zap_stats(os, object); 514 /* contents are printed elsewhere, properly decoded */ 515} 516 517/*ARGSUSED*/ 518static void 519dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size) 520{ 521 zap_cursor_t zc; 522 zap_attribute_t attr; 523 524 dump_zap_stats(os, object); 525 (void) printf("\n"); 526 527 for (zap_cursor_init(&zc, os, object); 528 zap_cursor_retrieve(&zc, &attr) == 0; 529 zap_cursor_advance(&zc)) { 530 (void) printf("\t\t%s = ", attr.za_name); 531 if (attr.za_num_integers == 0) { 532 (void) printf("\n"); 533 continue; 534 } 535 (void) printf(" %llx : [%d:%d:%d]\n", 536 (u_longlong_t)attr.za_first_integer, 537 (int)ATTR_LENGTH(attr.za_first_integer), 538 (int)ATTR_BSWAP(attr.za_first_integer), 539 (int)ATTR_NUM(attr.za_first_integer)); 540 } 541 zap_cursor_fini(&zc); 542} 543 544/*ARGSUSED*/ 545static void 546dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size) 547{ 548 zap_cursor_t zc; 549 zap_attribute_t attr; 550 uint16_t *layout_attrs; 551 int i; 552 553 dump_zap_stats(os, object); 554 (void) printf("\n"); 555 556 for (zap_cursor_init(&zc, os, object); 557 zap_cursor_retrieve(&zc, &attr) == 0; 558 zap_cursor_advance(&zc)) { 559 (void) printf("\t\t%s = [", attr.za_name); 560 if (attr.za_num_integers == 0) { 561 (void) printf("\n"); 562 continue; 563 } 564 565 VERIFY(attr.za_integer_length == 2); 566 layout_attrs = umem_zalloc(attr.za_num_integers * 567 attr.za_integer_length, UMEM_NOFAIL); 568 569 VERIFY(zap_lookup(os, object, attr.za_name, 570 attr.za_integer_length, 571 attr.za_num_integers, layout_attrs) == 0); 572 573 for (i = 0; i != attr.za_num_integers; i++) 574 (void) printf(" %d ", (int)layout_attrs[i]); 575 (void) printf("]\n"); 576 umem_free(layout_attrs, 577 attr.za_num_integers * attr.za_integer_length); 578 } 579 zap_cursor_fini(&zc); 580} 581 582/*ARGSUSED*/ 583static void 584dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size) 585{ 586 zap_cursor_t zc; 587 zap_attribute_t attr; 588 const char *typenames[] = { 589 /* 0 */ "not specified", 590 /* 1 */ "FIFO", 591 /* 2 */ "Character Device", 592 /* 3 */ "3 (invalid)", 593 /* 4 */ "Directory", 594 /* 5 */ "5 (invalid)", 595 /* 6 */ "Block Device", 596 /* 7 */ "7 (invalid)", 597 /* 8 */ "Regular File", 598 /* 9 */ "9 (invalid)", 599 /* 10 */ "Symbolic Link", 600 /* 11 */ "11 (invalid)", 601 /* 12 */ "Socket", 602 /* 13 */ "Door", 603 /* 14 */ "Event Port", 604 /* 15 */ "15 (invalid)", 605 }; 606 607 dump_zap_stats(os, object); 608 (void) printf("\n"); 609 610 for (zap_cursor_init(&zc, os, object); 611 zap_cursor_retrieve(&zc, &attr) == 0; 612 zap_cursor_advance(&zc)) { 613 (void) printf("\t\t%s = %lld (type: %s)\n", 614 attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer), 615 typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]); 616 } 617 zap_cursor_fini(&zc); 618} 619 620int 621get_dtl_refcount(vdev_t *vd) 622{ 623 int refcount = 0; 624 625 if (vd->vdev_ops->vdev_op_leaf) { 626 space_map_t *sm = vd->vdev_dtl_sm; 627 628 if (sm != NULL && 629 sm->sm_dbuf->db_size == sizeof (space_map_phys_t)) 630 return (1); 631 return (0); 632 } 633 634 for (int c = 0; c < vd->vdev_children; c++) 635 refcount += get_dtl_refcount(vd->vdev_child[c]); 636 return (refcount); 637} 638 639int 640get_metaslab_refcount(vdev_t *vd) 641{ 642 int refcount = 0; 643 644 if (vd->vdev_top == vd && !vd->vdev_removing) { 645 for (int m = 0; m < vd->vdev_ms_count; m++) { 646 space_map_t *sm = vd->vdev_ms[m]->ms_sm; 647 648 if (sm != NULL && 649 sm->sm_dbuf->db_size == sizeof (space_map_phys_t)) 650 refcount++; 651 } 652 } 653 for (int c = 0; c < vd->vdev_children; c++) 654 refcount += get_metaslab_refcount(vd->vdev_child[c]); 655 656 return (refcount); 657} 658 659static int 660verify_spacemap_refcounts(spa_t *spa) 661{ 662 uint64_t expected_refcount = 0; 663 uint64_t actual_refcount; 664 665 (void) feature_get_refcount(spa, 666 &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM], 667 &expected_refcount); 668 actual_refcount = get_dtl_refcount(spa->spa_root_vdev); 669 actual_refcount += get_metaslab_refcount(spa->spa_root_vdev); 670 671 if (expected_refcount != actual_refcount) { 672 (void) printf("space map refcount mismatch: expected %lld != " 673 "actual %lld\n", 674 (longlong_t)expected_refcount, 675 (longlong_t)actual_refcount); 676 return (2); 677 } 678 return (0); 679} 680 681static void 682dump_spacemap(objset_t *os, space_map_t *sm) 683{ 684 uint64_t alloc, offset, entry; 685 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID", 686 "INVALID", "INVALID", "INVALID", "INVALID" }; 687 688 if (sm == NULL) 689 return; 690 691 /* 692 * Print out the freelist entries in both encoded and decoded form. 693 */ 694 alloc = 0; 695 for (offset = 0; offset < space_map_length(sm); 696 offset += sizeof (entry)) { 697 uint8_t mapshift = sm->sm_shift; 698 699 VERIFY0(dmu_read(os, space_map_object(sm), offset, 700 sizeof (entry), &entry, DMU_READ_PREFETCH)); 701 if (SM_DEBUG_DECODE(entry)) { 702 703 (void) printf("\t [%6llu] %s: txg %llu, pass %llu\n", 704 (u_longlong_t)(offset / sizeof (entry)), 705 ddata[SM_DEBUG_ACTION_DECODE(entry)], 706 (u_longlong_t)SM_DEBUG_TXG_DECODE(entry), 707 (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry)); 708 } else { 709 (void) printf("\t [%6llu] %c range:" 710 " %010llx-%010llx size: %06llx\n", 711 (u_longlong_t)(offset / sizeof (entry)), 712 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 713 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 714 mapshift) + sm->sm_start), 715 (u_longlong_t)((SM_OFFSET_DECODE(entry) << 716 mapshift) + sm->sm_start + 717 (SM_RUN_DECODE(entry) << mapshift)), 718 (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift)); 719 if (SM_TYPE_DECODE(entry) == SM_ALLOC) 720 alloc += SM_RUN_DECODE(entry) << mapshift; 721 else 722 alloc -= SM_RUN_DECODE(entry) << mapshift; 723 } 724 } 725 if (alloc != space_map_allocated(sm)) { 726 (void) printf("space_map_object alloc (%llu) INCONSISTENT " 727 "with space map summary (%llu)\n", 728 (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc); 729 } 730} 731 732static void 733dump_metaslab_stats(metaslab_t *msp) 734{ 735 char maxbuf[32]; 736 range_tree_t *rt = msp->ms_tree; 737 avl_tree_t *t = &msp->ms_size_tree; 738 int free_pct = range_tree_space(rt) * 100 / msp->ms_size; 739 740 zdb_nicenum(metaslab_block_maxsize(msp), maxbuf); 741 742 (void) printf("\t %25s %10lu %7s %6s %4s %4d%%\n", 743 "segments", avl_numnodes(t), "maxsize", maxbuf, 744 "freepct", free_pct); 745 (void) printf("\tIn-memory histogram:\n"); 746 dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 747} 748 749static void 750dump_metaslab(metaslab_t *msp) 751{ 752 vdev_t *vd = msp->ms_group->mg_vd; 753 spa_t *spa = vd->vdev_spa; 754 space_map_t *sm = msp->ms_sm; 755 char freebuf[32]; 756 757 zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf); 758 759 (void) printf( 760 "\tmetaslab %6llu offset %12llx spacemap %6llu free %5s\n", 761 (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start, 762 (u_longlong_t)space_map_object(sm), freebuf); 763 764 if (dump_opt['m'] > 2 && !dump_opt['L']) { 765 mutex_enter(&msp->ms_lock); 766 metaslab_load_wait(msp); 767 if (!msp->ms_loaded) { 768 VERIFY0(metaslab_load(msp)); 769 range_tree_stat_verify(msp->ms_tree); 770 } 771 dump_metaslab_stats(msp); 772 metaslab_unload(msp); 773 mutex_exit(&msp->ms_lock); 774 } 775 776 if (dump_opt['m'] > 1 && sm != NULL && 777 spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) { 778 /* 779 * The space map histogram represents free space in chunks 780 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift). 781 */ 782 (void) printf("\tOn-disk histogram:\t\tfragmentation %llu\n", 783 (u_longlong_t)msp->ms_fragmentation); 784 dump_histogram(sm->sm_phys->smp_histogram, 785 SPACE_MAP_HISTOGRAM_SIZE, sm->sm_shift); 786 } 787 788 if (dump_opt['d'] > 5 || dump_opt['m'] > 3) { 789 ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift)); 790 791 mutex_enter(&msp->ms_lock); 792 dump_spacemap(spa->spa_meta_objset, msp->ms_sm); 793 mutex_exit(&msp->ms_lock); 794 } 795} 796 797static void 798print_vdev_metaslab_header(vdev_t *vd) 799{ 800 (void) printf("\tvdev %10llu\n\t%-10s%5llu %-19s %-15s %-10s\n", 801 (u_longlong_t)vd->vdev_id, 802 "metaslabs", (u_longlong_t)vd->vdev_ms_count, 803 "offset", "spacemap", "free"); 804 (void) printf("\t%15s %19s %15s %10s\n", 805 "---------------", "-------------------", 806 "---------------", "-------------"); 807} 808 809static void 810dump_metaslab_groups(spa_t *spa) 811{ 812 vdev_t *rvd = spa->spa_root_vdev; 813 metaslab_class_t *mc = spa_normal_class(spa); 814 uint64_t fragmentation; 815 816 metaslab_class_histogram_verify(mc); 817 818 for (int c = 0; c < rvd->vdev_children; c++) { 819 vdev_t *tvd = rvd->vdev_child[c]; 820 metaslab_group_t *mg = tvd->vdev_mg; 821 822 if (mg->mg_class != mc) 823 continue; 824 825 metaslab_group_histogram_verify(mg); 826 mg->mg_fragmentation = metaslab_group_fragmentation(mg); 827 828 (void) printf("\tvdev %10llu\t\tmetaslabs%5llu\t\t" 829 "fragmentation", 830 (u_longlong_t)tvd->vdev_id, 831 (u_longlong_t)tvd->vdev_ms_count); 832 if (mg->mg_fragmentation == ZFS_FRAG_INVALID) { 833 (void) printf("%3s\n", "-"); 834 } else { 835 (void) printf("%3llu%%\n", 836 (u_longlong_t)mg->mg_fragmentation); 837 } 838 dump_histogram(mg->mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 839 } 840 841 (void) printf("\tpool %s\tfragmentation", spa_name(spa)); 842 fragmentation = metaslab_class_fragmentation(mc); 843 if (fragmentation == ZFS_FRAG_INVALID) 844 (void) printf("\t%3s\n", "-"); 845 else 846 (void) printf("\t%3llu%%\n", (u_longlong_t)fragmentation); 847 dump_histogram(mc->mc_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0); 848} 849 850static void 851dump_metaslabs(spa_t *spa) 852{ 853 vdev_t *vd, *rvd = spa->spa_root_vdev; 854 uint64_t m, c = 0, children = rvd->vdev_children; 855 856 (void) printf("\nMetaslabs:\n"); 857 858 if (!dump_opt['d'] && zopt_objects > 0) { 859 c = zopt_object[0]; 860 861 if (c >= children) 862 (void) fatal("bad vdev id: %llu", (u_longlong_t)c); 863 864 if (zopt_objects > 1) { 865 vd = rvd->vdev_child[c]; 866 print_vdev_metaslab_header(vd); 867 868 for (m = 1; m < zopt_objects; m++) { 869 if (zopt_object[m] < vd->vdev_ms_count) 870 dump_metaslab( 871 vd->vdev_ms[zopt_object[m]]); 872 else 873 (void) fprintf(stderr, "bad metaslab " 874 "number %llu\n", 875 (u_longlong_t)zopt_object[m]); 876 } 877 (void) printf("\n"); 878 return; 879 } 880 children = c + 1; 881 } 882 for (; c < children; c++) { 883 vd = rvd->vdev_child[c]; 884 print_vdev_metaslab_header(vd); 885 886 for (m = 0; m < vd->vdev_ms_count; m++) 887 dump_metaslab(vd->vdev_ms[m]); 888 (void) printf("\n"); 889 } 890} 891 892static void 893dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index) 894{ 895 const ddt_phys_t *ddp = dde->dde_phys; 896 const ddt_key_t *ddk = &dde->dde_key; 897 char *types[4] = { "ditto", "single", "double", "triple" }; 898 char blkbuf[BP_SPRINTF_LEN]; 899 blkptr_t blk; 900 901 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 902 if (ddp->ddp_phys_birth == 0) 903 continue; 904 ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk); 905 snprintf_blkptr(blkbuf, sizeof (blkbuf), &blk); 906 (void) printf("index %llx refcnt %llu %s %s\n", 907 (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt, 908 types[p], blkbuf); 909 } 910} 911 912static void 913dump_dedup_ratio(const ddt_stat_t *dds) 914{ 915 double rL, rP, rD, D, dedup, compress, copies; 916 917 if (dds->dds_blocks == 0) 918 return; 919 920 rL = (double)dds->dds_ref_lsize; 921 rP = (double)dds->dds_ref_psize; 922 rD = (double)dds->dds_ref_dsize; 923 D = (double)dds->dds_dsize; 924 925 dedup = rD / D; 926 compress = rL / rP; 927 copies = rD / rP; 928 929 (void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, " 930 "dedup * compress / copies = %.2f\n\n", 931 dedup, compress, copies, dedup * compress / copies); 932} 933 934static void 935dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class) 936{ 937 char name[DDT_NAMELEN]; 938 ddt_entry_t dde; 939 uint64_t walk = 0; 940 dmu_object_info_t doi; 941 uint64_t count, dspace, mspace; 942 int error; 943 944 error = ddt_object_info(ddt, type, class, &doi); 945 946 if (error == ENOENT) 947 return; 948 ASSERT(error == 0); 949 950 error = ddt_object_count(ddt, type, class, &count); 951 ASSERT(error == 0); 952 if (count == 0) 953 return; 954 955 dspace = doi.doi_physical_blocks_512 << 9; 956 mspace = doi.doi_fill_count * doi.doi_data_block_size; 957 958 ddt_object_name(ddt, type, class, name); 959 960 (void) printf("%s: %llu entries, size %llu on disk, %llu in core\n", 961 name, 962 (u_longlong_t)count, 963 (u_longlong_t)(dspace / count), 964 (u_longlong_t)(mspace / count)); 965 966 if (dump_opt['D'] < 3) 967 return; 968 969 zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]); 970 971 if (dump_opt['D'] < 4) 972 return; 973 974 if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE) 975 return; 976 977 (void) printf("%s contents:\n\n", name); 978 979 while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0) 980 dump_dde(ddt, &dde, walk); 981 982 ASSERT(error == ENOENT); 983 984 (void) printf("\n"); 985} 986 987static void 988dump_all_ddts(spa_t *spa) 989{ 990 ddt_histogram_t ddh_total = { 0 }; 991 ddt_stat_t dds_total = { 0 }; 992 993 for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { 994 ddt_t *ddt = spa->spa_ddt[c]; 995 for (enum ddt_type type = 0; type < DDT_TYPES; type++) { 996 for (enum ddt_class class = 0; class < DDT_CLASSES; 997 class++) { 998 dump_ddt(ddt, type, class); 999 } 1000 } 1001 } 1002 1003 ddt_get_dedup_stats(spa, &dds_total); 1004 1005 if (dds_total.dds_blocks == 0) { 1006 (void) printf("All DDTs are empty\n"); 1007 return; 1008 } 1009 1010 (void) printf("\n"); 1011 1012 if (dump_opt['D'] > 1) { 1013 (void) printf("DDT histogram (aggregated over all DDTs):\n"); 1014 ddt_get_dedup_histogram(spa, &ddh_total); 1015 zpool_dump_ddt(&dds_total, &ddh_total); 1016 } 1017 1018 dump_dedup_ratio(&dds_total); 1019} 1020 1021static void 1022dump_dtl_seg(void *arg, uint64_t start, uint64_t size) 1023{ 1024 char *prefix = arg; 1025 1026 (void) printf("%s [%llu,%llu) length %llu\n", 1027 prefix, 1028 (u_longlong_t)start, 1029 (u_longlong_t)(start + size), 1030 (u_longlong_t)(size)); 1031} 1032 1033static void 1034dump_dtl(vdev_t *vd, int indent) 1035{ 1036 spa_t *spa = vd->vdev_spa; 1037 boolean_t required; 1038 char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" }; 1039 char prefix[256]; 1040 1041 spa_vdev_state_enter(spa, SCL_NONE); 1042 required = vdev_dtl_required(vd); 1043 (void) spa_vdev_state_exit(spa, NULL, 0); 1044 1045 if (indent == 0) 1046 (void) printf("\nDirty time logs:\n\n"); 1047 1048 (void) printf("\t%*s%s [%s]\n", indent, "", 1049 vd->vdev_path ? vd->vdev_path : 1050 vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa), 1051 required ? "DTL-required" : "DTL-expendable"); 1052 1053 for (int t = 0; t < DTL_TYPES; t++) { 1054 range_tree_t *rt = vd->vdev_dtl[t]; 1055 if (range_tree_space(rt) == 0) 1056 continue; 1057 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s", 1058 indent + 2, "", name[t]); 1059 mutex_enter(rt->rt_lock); 1060 range_tree_walk(rt, dump_dtl_seg, prefix); 1061 mutex_exit(rt->rt_lock); 1062 if (dump_opt['d'] > 5 && vd->vdev_children == 0) 1063 dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm); 1064 } 1065 1066 for (int c = 0; c < vd->vdev_children; c++) 1067 dump_dtl(vd->vdev_child[c], indent + 4); 1068} 1069 1070/* from spa_history.c: spa_history_create_obj() */ 1071#define HIS_BUF_LEN_DEF (128 << 10) 1072#define HIS_BUF_LEN_MAX (1 << 30) 1073 1074static void 1075dump_history(spa_t *spa) 1076{ 1077 nvlist_t **events = NULL; 1078 char *buf = NULL; 1079 uint64_t bufsize = HIS_BUF_LEN_DEF; 1080 uint64_t resid, len, off = 0; 1081 uint_t num = 0; 1082 int error; 1083 time_t tsec; 1084 struct tm t; 1085 char tbuf[30]; 1086 char internalstr[MAXPATHLEN]; 1087 1088 if ((buf = malloc(bufsize)) == NULL) 1089 (void) fprintf(stderr, "Unable to read history: " 1090 "out of memory\n"); 1091 do { 1092 len = bufsize; 1093 1094 if ((error = spa_history_get(spa, &off, &len, buf)) != 0) { 1095 (void) fprintf(stderr, "Unable to read history: " 1096 "error %d\n", error); 1097 return; 1098 } 1099 1100 if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0) 1101 break; 1102 off -= resid; 1103 1104 /* 1105 * If the history block is too big, double the buffer 1106 * size and try again. 1107 */ 1108 if (resid == len) { 1109 free(buf); 1110 buf = NULL; 1111 1112 bufsize <<= 1; 1113 if ((bufsize >= HIS_BUF_LEN_MAX) || 1114 ((buf = malloc(bufsize)) == NULL)) { 1115 (void) fprintf(stderr, "Unable to read history: " 1116 "out of memory\n"); 1117 return; 1118 } 1119 } 1120 } while (len != 0); 1121 free(buf); 1122 1123 (void) printf("\nHistory:\n"); 1124 for (int i = 0; i < num; i++) { 1125 uint64_t time, txg, ievent; 1126 char *cmd, *intstr; 1127 boolean_t printed = B_FALSE; 1128 1129 if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME, 1130 &time) != 0) 1131 goto next; 1132 if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD, 1133 &cmd) != 0) { 1134 if (nvlist_lookup_uint64(events[i], 1135 ZPOOL_HIST_INT_EVENT, &ievent) != 0) 1136 goto next; 1137 verify(nvlist_lookup_uint64(events[i], 1138 ZPOOL_HIST_TXG, &txg) == 0); 1139 verify(nvlist_lookup_string(events[i], 1140 ZPOOL_HIST_INT_STR, &intstr) == 0); 1141 if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS) 1142 goto next; 1143 1144 (void) snprintf(internalstr, 1145 sizeof (internalstr), 1146 "[internal %s txg:%lld] %s", 1147 zfs_history_event_names[ievent], txg, 1148 intstr); 1149 cmd = internalstr; 1150 } 1151 tsec = time; 1152 (void) localtime_r(&tsec, &t); 1153 (void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t); 1154 (void) printf("%s %s\n", tbuf, cmd); 1155 printed = B_TRUE; 1156 1157next: 1158 if (dump_opt['h'] > 1) { 1159 if (!printed) 1160 (void) printf("unrecognized record:\n"); 1161 dump_nvlist(events[i], 2); 1162 } 1163 } 1164} 1165 1166/*ARGSUSED*/ 1167static void 1168dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 1169{ 1170} 1171 1172static uint64_t 1173blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, 1174 const zbookmark_phys_t *zb) 1175{ 1176 if (dnp == NULL) { 1177 ASSERT(zb->zb_level < 0); 1178 if (zb->zb_object == 0) 1179 return (zb->zb_blkid); 1180 return (zb->zb_blkid * BP_GET_LSIZE(bp)); 1181 } 1182 1183 ASSERT(zb->zb_level >= 0); 1184 1185 return ((zb->zb_blkid << 1186 (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 1187 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 1188} 1189 1190static void 1191snprintf_blkptr_compact(char *blkbuf, size_t buflen, const blkptr_t *bp) 1192{ 1193 const dva_t *dva = bp->blk_dva; 1194 int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1; 1195 1196 if (dump_opt['b'] >= 6) { 1197 snprintf_blkptr(blkbuf, buflen, bp); 1198 return; 1199 } 1200 1201 if (BP_IS_EMBEDDED(bp)) { 1202 (void) sprintf(blkbuf, 1203 "EMBEDDED et=%u %llxL/%llxP B=%llu", 1204 (int)BPE_GET_ETYPE(bp), 1205 (u_longlong_t)BPE_GET_LSIZE(bp), 1206 (u_longlong_t)BPE_GET_PSIZE(bp), 1207 (u_longlong_t)bp->blk_birth); 1208 return; 1209 } 1210 1211 blkbuf[0] = '\0'; 1212 for (int i = 0; i < ndvas; i++) 1213 (void) snprintf(blkbuf + strlen(blkbuf), 1214 buflen - strlen(blkbuf), "%llu:%llx:%llx ", 1215 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 1216 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 1217 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 1218 1219 if (BP_IS_HOLE(bp)) { 1220 (void) snprintf(blkbuf + strlen(blkbuf), 1221 buflen - strlen(blkbuf), 1222 "%llxL B=%llu", 1223 (u_longlong_t)BP_GET_LSIZE(bp), 1224 (u_longlong_t)bp->blk_birth); 1225 } else { 1226 (void) snprintf(blkbuf + strlen(blkbuf), 1227 buflen - strlen(blkbuf), 1228 "%llxL/%llxP F=%llu B=%llu/%llu", 1229 (u_longlong_t)BP_GET_LSIZE(bp), 1230 (u_longlong_t)BP_GET_PSIZE(bp), 1231 (u_longlong_t)BP_GET_FILL(bp), 1232 (u_longlong_t)bp->blk_birth, 1233 (u_longlong_t)BP_PHYSICAL_BIRTH(bp)); 1234 } 1235} 1236 1237static void 1238print_indirect(blkptr_t *bp, const zbookmark_phys_t *zb, 1239 const dnode_phys_t *dnp) 1240{ 1241 char blkbuf[BP_SPRINTF_LEN]; 1242 int l; 1243 1244 if (!BP_IS_EMBEDDED(bp)) { 1245 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 1246 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 1247 } 1248 1249 (void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb)); 1250 1251 ASSERT(zb->zb_level >= 0); 1252 1253 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 1254 if (l == zb->zb_level) { 1255 (void) printf("L%llx", (u_longlong_t)zb->zb_level); 1256 } else { 1257 (void) printf(" "); 1258 } 1259 } 1260 1261 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp); 1262 (void) printf("%s\n", blkbuf); 1263} 1264 1265static int 1266visit_indirect(spa_t *spa, const dnode_phys_t *dnp, 1267 blkptr_t *bp, const zbookmark_phys_t *zb) 1268{ 1269 int err = 0; 1270 1271 if (bp->blk_birth == 0) 1272 return (0); 1273 1274 print_indirect(bp, zb, dnp); 1275 1276 if (BP_GET_LEVEL(bp) > 0 && !BP_IS_HOLE(bp)) { 1277 arc_flags_t flags = ARC_FLAG_WAIT; 1278 int i; 1279 blkptr_t *cbp; 1280 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT; 1281 arc_buf_t *buf; 1282 uint64_t fill = 0; 1283 1284 err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf, 1285 ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb); 1286 if (err) 1287 return (err); 1288 ASSERT(buf->b_data); 1289 1290 /* recursively visit blocks below this */ 1291 cbp = buf->b_data; 1292 for (i = 0; i < epb; i++, cbp++) { 1293 zbookmark_phys_t czb; 1294 1295 SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object, 1296 zb->zb_level - 1, 1297 zb->zb_blkid * epb + i); 1298 err = visit_indirect(spa, dnp, cbp, &czb); 1299 if (err) 1300 break; 1301 fill += BP_GET_FILL(cbp); 1302 } 1303 if (!err) 1304 ASSERT3U(fill, ==, BP_GET_FILL(bp)); 1305 arc_buf_destroy(buf, &buf); 1306 } 1307 1308 return (err); 1309} 1310 1311/*ARGSUSED*/ 1312static void 1313dump_indirect(dnode_t *dn) 1314{ 1315 dnode_phys_t *dnp = dn->dn_phys; 1316 int j; 1317 zbookmark_phys_t czb; 1318 1319 (void) printf("Indirect blocks:\n"); 1320 1321 SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset), 1322 dn->dn_object, dnp->dn_nlevels - 1, 0); 1323 for (j = 0; j < dnp->dn_nblkptr; j++) { 1324 czb.zb_blkid = j; 1325 (void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp, 1326 &dnp->dn_blkptr[j], &czb); 1327 } 1328 1329 (void) printf("\n"); 1330} 1331 1332/*ARGSUSED*/ 1333static void 1334dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 1335{ 1336 dsl_dir_phys_t *dd = data; 1337 time_t crtime; 1338 char nice[32]; 1339 1340 if (dd == NULL) 1341 return; 1342 1343 ASSERT3U(size, >=, sizeof (dsl_dir_phys_t)); 1344 1345 crtime = dd->dd_creation_time; 1346 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1347 (void) printf("\t\thead_dataset_obj = %llu\n", 1348 (u_longlong_t)dd->dd_head_dataset_obj); 1349 (void) printf("\t\tparent_dir_obj = %llu\n", 1350 (u_longlong_t)dd->dd_parent_obj); 1351 (void) printf("\t\torigin_obj = %llu\n", 1352 (u_longlong_t)dd->dd_origin_obj); 1353 (void) printf("\t\tchild_dir_zapobj = %llu\n", 1354 (u_longlong_t)dd->dd_child_dir_zapobj); 1355 zdb_nicenum(dd->dd_used_bytes, nice); 1356 (void) printf("\t\tused_bytes = %s\n", nice); 1357 zdb_nicenum(dd->dd_compressed_bytes, nice); 1358 (void) printf("\t\tcompressed_bytes = %s\n", nice); 1359 zdb_nicenum(dd->dd_uncompressed_bytes, nice); 1360 (void) printf("\t\tuncompressed_bytes = %s\n", nice); 1361 zdb_nicenum(dd->dd_quota, nice); 1362 (void) printf("\t\tquota = %s\n", nice); 1363 zdb_nicenum(dd->dd_reserved, nice); 1364 (void) printf("\t\treserved = %s\n", nice); 1365 (void) printf("\t\tprops_zapobj = %llu\n", 1366 (u_longlong_t)dd->dd_props_zapobj); 1367 (void) printf("\t\tdeleg_zapobj = %llu\n", 1368 (u_longlong_t)dd->dd_deleg_zapobj); 1369 (void) printf("\t\tflags = %llx\n", 1370 (u_longlong_t)dd->dd_flags); 1371 1372#define DO(which) \ 1373 zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \ 1374 (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice) 1375 DO(HEAD); 1376 DO(SNAP); 1377 DO(CHILD); 1378 DO(CHILD_RSRV); 1379 DO(REFRSRV); 1380#undef DO 1381} 1382 1383/*ARGSUSED*/ 1384static void 1385dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 1386{ 1387 dsl_dataset_phys_t *ds = data; 1388 time_t crtime; 1389 char used[32], compressed[32], uncompressed[32], unique[32]; 1390 char blkbuf[BP_SPRINTF_LEN]; 1391 1392 if (ds == NULL) 1393 return; 1394 1395 ASSERT(size == sizeof (*ds)); 1396 crtime = ds->ds_creation_time; 1397 zdb_nicenum(ds->ds_referenced_bytes, used); 1398 zdb_nicenum(ds->ds_compressed_bytes, compressed); 1399 zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed); 1400 zdb_nicenum(ds->ds_unique_bytes, unique); 1401 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ds->ds_bp); 1402 1403 (void) printf("\t\tdir_obj = %llu\n", 1404 (u_longlong_t)ds->ds_dir_obj); 1405 (void) printf("\t\tprev_snap_obj = %llu\n", 1406 (u_longlong_t)ds->ds_prev_snap_obj); 1407 (void) printf("\t\tprev_snap_txg = %llu\n", 1408 (u_longlong_t)ds->ds_prev_snap_txg); 1409 (void) printf("\t\tnext_snap_obj = %llu\n", 1410 (u_longlong_t)ds->ds_next_snap_obj); 1411 (void) printf("\t\tsnapnames_zapobj = %llu\n", 1412 (u_longlong_t)ds->ds_snapnames_zapobj); 1413 (void) printf("\t\tnum_children = %llu\n", 1414 (u_longlong_t)ds->ds_num_children); 1415 (void) printf("\t\tuserrefs_obj = %llu\n", 1416 (u_longlong_t)ds->ds_userrefs_obj); 1417 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 1418 (void) printf("\t\tcreation_txg = %llu\n", 1419 (u_longlong_t)ds->ds_creation_txg); 1420 (void) printf("\t\tdeadlist_obj = %llu\n", 1421 (u_longlong_t)ds->ds_deadlist_obj); 1422 (void) printf("\t\tused_bytes = %s\n", used); 1423 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 1424 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 1425 (void) printf("\t\tunique = %s\n", unique); 1426 (void) printf("\t\tfsid_guid = %llu\n", 1427 (u_longlong_t)ds->ds_fsid_guid); 1428 (void) printf("\t\tguid = %llu\n", 1429 (u_longlong_t)ds->ds_guid); 1430 (void) printf("\t\tflags = %llx\n", 1431 (u_longlong_t)ds->ds_flags); 1432 (void) printf("\t\tnext_clones_obj = %llu\n", 1433 (u_longlong_t)ds->ds_next_clones_obj); 1434 (void) printf("\t\tprops_obj = %llu\n", 1435 (u_longlong_t)ds->ds_props_obj); 1436 (void) printf("\t\tbp = %s\n", blkbuf); 1437} 1438 1439/* ARGSUSED */ 1440static int 1441dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 1442{ 1443 char blkbuf[BP_SPRINTF_LEN]; 1444 1445 if (bp->blk_birth != 0) { 1446 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 1447 (void) printf("\t%s\n", blkbuf); 1448 } 1449 return (0); 1450} 1451 1452static void 1453dump_bptree(objset_t *os, uint64_t obj, char *name) 1454{ 1455 char bytes[32]; 1456 bptree_phys_t *bt; 1457 dmu_buf_t *db; 1458 1459 if (dump_opt['d'] < 3) 1460 return; 1461 1462 VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db)); 1463 bt = db->db_data; 1464 zdb_nicenum(bt->bt_bytes, bytes); 1465 (void) printf("\n %s: %llu datasets, %s\n", 1466 name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes); 1467 dmu_buf_rele(db, FTAG); 1468 1469 if (dump_opt['d'] < 5) 1470 return; 1471 1472 (void) printf("\n"); 1473 1474 (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL); 1475} 1476 1477/* ARGSUSED */ 1478static int 1479dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 1480{ 1481 char blkbuf[BP_SPRINTF_LEN]; 1482 1483 ASSERT(bp->blk_birth != 0); 1484 snprintf_blkptr_compact(blkbuf, sizeof (blkbuf), bp); 1485 (void) printf("\t%s\n", blkbuf); 1486 return (0); 1487} 1488 1489static void 1490dump_full_bpobj(bpobj_t *bpo, char *name, int indent) 1491{ 1492 char bytes[32]; 1493 char comp[32]; 1494 char uncomp[32]; 1495 1496 if (dump_opt['d'] < 3) 1497 return; 1498 1499 zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes); 1500 if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) { 1501 zdb_nicenum(bpo->bpo_phys->bpo_comp, comp); 1502 zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp); 1503 (void) printf(" %*s: object %llu, %llu local blkptrs, " 1504 "%llu subobjs in object %llu, %s (%s/%s comp)\n", 1505 indent * 8, name, 1506 (u_longlong_t)bpo->bpo_object, 1507 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, 1508 (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs, 1509 (u_longlong_t)bpo->bpo_phys->bpo_subobjs, 1510 bytes, comp, uncomp); 1511 1512 for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) { 1513 uint64_t subobj; 1514 bpobj_t subbpo; 1515 int error; 1516 VERIFY0(dmu_read(bpo->bpo_os, 1517 bpo->bpo_phys->bpo_subobjs, 1518 i * sizeof (subobj), sizeof (subobj), &subobj, 0)); 1519 error = bpobj_open(&subbpo, bpo->bpo_os, subobj); 1520 if (error != 0) { 1521 (void) printf("ERROR %u while trying to open " 1522 "subobj id %llu\n", 1523 error, (u_longlong_t)subobj); 1524 continue; 1525 } 1526 dump_full_bpobj(&subbpo, "subobj", indent + 1); 1527 bpobj_close(&subbpo); 1528 } 1529 } else { 1530 (void) printf(" %*s: object %llu, %llu blkptrs, %s\n", 1531 indent * 8, name, 1532 (u_longlong_t)bpo->bpo_object, 1533 (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs, 1534 bytes); 1535 } 1536 1537 if (dump_opt['d'] < 5) 1538 return; 1539 1540 1541 if (indent == 0) { 1542 (void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL); 1543 (void) printf("\n"); 1544 } 1545} 1546 1547static void 1548dump_deadlist(dsl_deadlist_t *dl) 1549{ 1550 dsl_deadlist_entry_t *dle; 1551 uint64_t unused; 1552 char bytes[32]; 1553 char comp[32]; 1554 char uncomp[32]; 1555 1556 if (dump_opt['d'] < 3) 1557 return; 1558 1559 if (dl->dl_oldfmt) { 1560 dump_full_bpobj(&dl->dl_bpobj, "old-format deadlist", 0); 1561 return; 1562 } 1563 1564 zdb_nicenum(dl->dl_phys->dl_used, bytes); 1565 zdb_nicenum(dl->dl_phys->dl_comp, comp); 1566 zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp); 1567 (void) printf("\n Deadlist: %s (%s/%s comp)\n", 1568 bytes, comp, uncomp); 1569 1570 if (dump_opt['d'] < 4) 1571 return; 1572 1573 (void) printf("\n"); 1574 1575 /* force the tree to be loaded */ 1576 dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused); 1577 1578 for (dle = avl_first(&dl->dl_tree); dle; 1579 dle = AVL_NEXT(&dl->dl_tree, dle)) { 1580 if (dump_opt['d'] >= 5) { 1581 char buf[128]; 1582 (void) snprintf(buf, sizeof (buf), "mintxg %llu -> ", 1583 (longlong_t)dle->dle_mintxg, 1584 (longlong_t)dle->dle_bpobj.bpo_object); 1585 dump_full_bpobj(&dle->dle_bpobj, buf, 0); 1586 } else { 1587 (void) printf("mintxg %llu -> obj %llu\n", 1588 (longlong_t)dle->dle_mintxg, 1589 (longlong_t)dle->dle_bpobj.bpo_object); 1590 1591 } 1592 } 1593} 1594 1595static avl_tree_t idx_tree; 1596static avl_tree_t domain_tree; 1597static boolean_t fuid_table_loaded; 1598static boolean_t sa_loaded; 1599sa_attr_type_t *sa_attr_table; 1600 1601static void 1602fuid_table_destroy() 1603{ 1604 if (fuid_table_loaded) { 1605 zfs_fuid_table_destroy(&idx_tree, &domain_tree); 1606 fuid_table_loaded = B_FALSE; 1607 } 1608} 1609 1610/* 1611 * print uid or gid information. 1612 * For normal POSIX id just the id is printed in decimal format. 1613 * For CIFS files with FUID the fuid is printed in hex followed by 1614 * the domain-rid string. 1615 */ 1616static void 1617print_idstr(uint64_t id, const char *id_type) 1618{ 1619 if (FUID_INDEX(id)) { 1620 char *domain; 1621 1622 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id)); 1623 (void) printf("\t%s %llx [%s-%d]\n", id_type, 1624 (u_longlong_t)id, domain, (int)FUID_RID(id)); 1625 } else { 1626 (void) printf("\t%s %llu\n", id_type, (u_longlong_t)id); 1627 } 1628 1629} 1630 1631static void 1632dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid) 1633{ 1634 uint32_t uid_idx, gid_idx; 1635 1636 uid_idx = FUID_INDEX(uid); 1637 gid_idx = FUID_INDEX(gid); 1638 1639 /* Load domain table, if not already loaded */ 1640 if (!fuid_table_loaded && (uid_idx || gid_idx)) { 1641 uint64_t fuid_obj; 1642 1643 /* first find the fuid object. It lives in the master node */ 1644 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 1645 8, 1, &fuid_obj) == 0); 1646 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree); 1647 (void) zfs_fuid_table_load(os, fuid_obj, 1648 &idx_tree, &domain_tree); 1649 fuid_table_loaded = B_TRUE; 1650 } 1651 1652 print_idstr(uid, "uid"); 1653 print_idstr(gid, "gid"); 1654} 1655 1656/*ARGSUSED*/ 1657static void 1658dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 1659{ 1660 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 1661 sa_handle_t *hdl; 1662 uint64_t xattr, rdev, gen; 1663 uint64_t uid, gid, mode, fsize, parent, links; 1664 uint64_t pflags; 1665 uint64_t acctm[2], modtm[2], chgtm[2], crtm[2]; 1666 time_t z_crtime, z_atime, z_mtime, z_ctime; 1667 sa_bulk_attr_t bulk[12]; 1668 int idx = 0; 1669 int error; 1670 1671 if (!sa_loaded) { 1672 uint64_t sa_attrs = 0; 1673 uint64_t version; 1674 1675 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR, 1676 8, 1, &version) == 0); 1677 if (version >= ZPL_VERSION_SA) { 1678 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 1679 8, 1, &sa_attrs) == 0); 1680 } 1681 if ((error = sa_setup(os, sa_attrs, zfs_attr_table, 1682 ZPL_END, &sa_attr_table)) != 0) { 1683 (void) printf("sa_setup failed errno %d, can't " 1684 "display znode contents\n", error); 1685 return; 1686 } 1687 sa_loaded = B_TRUE; 1688 } 1689 1690 if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) { 1691 (void) printf("Failed to get handle for SA znode\n"); 1692 return; 1693 } 1694 1695 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8); 1696 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8); 1697 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL, 1698 &links, 8); 1699 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8); 1700 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL, 1701 &mode, 8); 1702 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT], 1703 NULL, &parent, 8); 1704 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL, 1705 &fsize, 8); 1706 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL, 1707 acctm, 16); 1708 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL, 1709 modtm, 16); 1710 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL, 1711 crtm, 16); 1712 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL, 1713 chgtm, 16); 1714 SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL, 1715 &pflags, 8); 1716 1717 if (sa_bulk_lookup(hdl, bulk, idx)) { 1718 (void) sa_handle_destroy(hdl); 1719 return; 1720 } 1721 1722 z_crtime = (time_t)crtm[0]; 1723 z_atime = (time_t)acctm[0]; 1724 z_mtime = (time_t)modtm[0]; 1725 z_ctime = (time_t)chgtm[0]; 1726 1727 if (dump_opt['d'] > 4) { 1728 error = zfs_obj_to_path(os, object, path, sizeof (path)); 1729 if (error != 0) { 1730 (void) snprintf(path, sizeof (path), 1731 "\?\?\?<object#%llu>", (u_longlong_t)object); 1732 } 1733 (void) printf("\tpath %s\n", path); 1734 } 1735 dump_uidgid(os, uid, gid); 1736 (void) printf("\tatime %s", ctime(&z_atime)); 1737 (void) printf("\tmtime %s", ctime(&z_mtime)); 1738 (void) printf("\tctime %s", ctime(&z_ctime)); 1739 (void) printf("\tcrtime %s", ctime(&z_crtime)); 1740 (void) printf("\tgen %llu\n", (u_longlong_t)gen); 1741 (void) printf("\tmode %llo\n", (u_longlong_t)mode); 1742 (void) printf("\tsize %llu\n", (u_longlong_t)fsize); 1743 (void) printf("\tparent %llu\n", (u_longlong_t)parent); 1744 (void) printf("\tlinks %llu\n", (u_longlong_t)links); 1745 (void) printf("\tpflags %llx\n", (u_longlong_t)pflags); 1746 if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr, 1747 sizeof (uint64_t)) == 0) 1748 (void) printf("\txattr %llu\n", (u_longlong_t)xattr); 1749 if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev, 1750 sizeof (uint64_t)) == 0) 1751 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)rdev); 1752 sa_handle_destroy(hdl); 1753} 1754 1755/*ARGSUSED*/ 1756static void 1757dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 1758{ 1759} 1760 1761/*ARGSUSED*/ 1762static void 1763dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 1764{ 1765} 1766 1767static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = { 1768 dump_none, /* unallocated */ 1769 dump_zap, /* object directory */ 1770 dump_uint64, /* object array */ 1771 dump_none, /* packed nvlist */ 1772 dump_packed_nvlist, /* packed nvlist size */ 1773 dump_none, /* bpobj */ 1774 dump_bpobj, /* bpobj header */ 1775 dump_none, /* SPA space map header */ 1776 dump_none, /* SPA space map */ 1777 dump_none, /* ZIL intent log */ 1778 dump_dnode, /* DMU dnode */ 1779 dump_dmu_objset, /* DMU objset */ 1780 dump_dsl_dir, /* DSL directory */ 1781 dump_zap, /* DSL directory child map */ 1782 dump_zap, /* DSL dataset snap map */ 1783 dump_zap, /* DSL props */ 1784 dump_dsl_dataset, /* DSL dataset */ 1785 dump_znode, /* ZFS znode */ 1786 dump_acl, /* ZFS V0 ACL */ 1787 dump_uint8, /* ZFS plain file */ 1788 dump_zpldir, /* ZFS directory */ 1789 dump_zap, /* ZFS master node */ 1790 dump_zap, /* ZFS delete queue */ 1791 dump_uint8, /* zvol object */ 1792 dump_zap, /* zvol prop */ 1793 dump_uint8, /* other uint8[] */ 1794 dump_uint64, /* other uint64[] */ 1795 dump_zap, /* other ZAP */ 1796 dump_zap, /* persistent error log */ 1797 dump_uint8, /* SPA history */ 1798 dump_history_offsets, /* SPA history offsets */ 1799 dump_zap, /* Pool properties */ 1800 dump_zap, /* DSL permissions */ 1801 dump_acl, /* ZFS ACL */ 1802 dump_uint8, /* ZFS SYSACL */ 1803 dump_none, /* FUID nvlist */ 1804 dump_packed_nvlist, /* FUID nvlist size */ 1805 dump_zap, /* DSL dataset next clones */ 1806 dump_zap, /* DSL scrub queue */ 1807 dump_zap, /* ZFS user/group used */ 1808 dump_zap, /* ZFS user/group quota */ 1809 dump_zap, /* snapshot refcount tags */ 1810 dump_ddt_zap, /* DDT ZAP object */ 1811 dump_zap, /* DDT statistics */ 1812 dump_znode, /* SA object */ 1813 dump_zap, /* SA Master Node */ 1814 dump_sa_attrs, /* SA attribute registration */ 1815 dump_sa_layouts, /* SA attribute layouts */ 1816 dump_zap, /* DSL scrub translations */ 1817 dump_none, /* fake dedup BP */ 1818 dump_zap, /* deadlist */ 1819 dump_none, /* deadlist hdr */ 1820 dump_zap, /* dsl clones */ 1821 dump_bpobj_subobjs, /* bpobj subobjs */ 1822 dump_unknown, /* Unknown type, must be last */ 1823}; 1824 1825static void 1826dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 1827{ 1828 dmu_buf_t *db = NULL; 1829 dmu_object_info_t doi; 1830 dnode_t *dn; 1831 void *bonus = NULL; 1832 size_t bsize = 0; 1833 char iblk[32], dblk[32], lsize[32], asize[32], fill[32]; 1834 char bonus_size[32]; 1835 char aux[50]; 1836 int error; 1837 1838 if (*print_header) { 1839 (void) printf("\n%10s %3s %5s %5s %5s %5s %6s %s\n", 1840 "Object", "lvl", "iblk", "dblk", "dsize", "lsize", 1841 "%full", "type"); 1842 *print_header = 0; 1843 } 1844 1845 if (object == 0) { 1846 dn = DMU_META_DNODE(os); 1847 } else { 1848 error = dmu_bonus_hold(os, object, FTAG, &db); 1849 if (error) 1850 fatal("dmu_bonus_hold(%llu) failed, errno %u", 1851 object, error); 1852 bonus = db->db_data; 1853 bsize = db->db_size; 1854 dn = DB_DNODE((dmu_buf_impl_t *)db); 1855 } 1856 dmu_object_info_from_dnode(dn, &doi); 1857 1858 zdb_nicenum(doi.doi_metadata_block_size, iblk); 1859 zdb_nicenum(doi.doi_data_block_size, dblk); 1860 zdb_nicenum(doi.doi_max_offset, lsize); 1861 zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize); 1862 zdb_nicenum(doi.doi_bonus_size, bonus_size); 1863 (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count * 1864 doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) / 1865 doi.doi_max_offset); 1866 1867 aux[0] = '\0'; 1868 1869 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 1870 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 1871 ZDB_CHECKSUM_NAME(doi.doi_checksum)); 1872 } 1873 1874 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 1875 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 1876 ZDB_COMPRESS_NAME(doi.doi_compress)); 1877 } 1878 1879 (void) printf("%10lld %3u %5s %5s %5s %5s %6s %s%s\n", 1880 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, 1881 asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux); 1882 1883 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 1884 (void) printf("%10s %3s %5s %5s %5s %5s %6s %s\n", 1885 "", "", "", "", "", bonus_size, "bonus", 1886 ZDB_OT_NAME(doi.doi_bonus_type)); 1887 } 1888 1889 if (verbosity >= 4) { 1890 (void) printf("\tdnode flags: %s%s%s\n", 1891 (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ? 1892 "USED_BYTES " : "", 1893 (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ? 1894 "USERUSED_ACCOUNTED " : "", 1895 (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ? 1896 "SPILL_BLKPTR" : ""); 1897 (void) printf("\tdnode maxblkid: %llu\n", 1898 (longlong_t)dn->dn_phys->dn_maxblkid); 1899 1900 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object, 1901 bonus, bsize); 1902 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0); 1903 *print_header = 1; 1904 } 1905 1906 if (verbosity >= 5) 1907 dump_indirect(dn); 1908 1909 if (verbosity >= 5) { 1910 /* 1911 * Report the list of segments that comprise the object. 1912 */ 1913 uint64_t start = 0; 1914 uint64_t end; 1915 uint64_t blkfill = 1; 1916 int minlvl = 1; 1917 1918 if (dn->dn_type == DMU_OT_DNODE) { 1919 minlvl = 0; 1920 blkfill = DNODES_PER_BLOCK; 1921 } 1922 1923 for (;;) { 1924 char segsize[32]; 1925 error = dnode_next_offset(dn, 1926 0, &start, minlvl, blkfill, 0); 1927 if (error) 1928 break; 1929 end = start; 1930 error = dnode_next_offset(dn, 1931 DNODE_FIND_HOLE, &end, minlvl, blkfill, 0); 1932 zdb_nicenum(end - start, segsize); 1933 (void) printf("\t\tsegment [%016llx, %016llx)" 1934 " size %5s\n", (u_longlong_t)start, 1935 (u_longlong_t)end, segsize); 1936 if (error) 1937 break; 1938 start = end; 1939 } 1940 } 1941 1942 if (db != NULL) 1943 dmu_buf_rele(db, FTAG); 1944} 1945 1946static char *objset_types[DMU_OST_NUMTYPES] = { 1947 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1948 1949static void 1950dump_dir(objset_t *os) 1951{ 1952 dmu_objset_stats_t dds; 1953 uint64_t object, object_count; 1954 uint64_t refdbytes, usedobjs, scratch; 1955 char numbuf[32]; 1956 char blkbuf[BP_SPRINTF_LEN + 20]; 1957 char osname[ZFS_MAX_DATASET_NAME_LEN]; 1958 char *type = "UNKNOWN"; 1959 int verbosity = dump_opt['d']; 1960 int print_header = 1; 1961 int i, error; 1962 1963 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 1964 dmu_objset_fast_stat(os, &dds); 1965 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 1966 1967 if (dds.dds_type < DMU_OST_NUMTYPES) 1968 type = objset_types[dds.dds_type]; 1969 1970 if (dds.dds_type == DMU_OST_META) { 1971 dds.dds_creation_txg = TXG_INITIAL; 1972 usedobjs = BP_GET_FILL(os->os_rootbp); 1973 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)-> 1974 dd_used_bytes; 1975 } else { 1976 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 1977 } 1978 1979 ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp)); 1980 1981 zdb_nicenum(refdbytes, numbuf); 1982 1983 if (verbosity >= 4) { 1984 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp "); 1985 (void) snprintf_blkptr(blkbuf + strlen(blkbuf), 1986 sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp); 1987 } else { 1988 blkbuf[0] = '\0'; 1989 } 1990 1991 dmu_objset_name(os, osname); 1992 1993 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 1994 "%s, %llu objects%s\n", 1995 osname, type, (u_longlong_t)dmu_objset_id(os), 1996 (u_longlong_t)dds.dds_creation_txg, 1997 numbuf, (u_longlong_t)usedobjs, blkbuf); 1998 1999 if (zopt_objects != 0) { 2000 for (i = 0; i < zopt_objects; i++) 2001 dump_object(os, zopt_object[i], verbosity, 2002 &print_header); 2003 (void) printf("\n"); 2004 return; 2005 } 2006 2007 if (dump_opt['i'] != 0 || verbosity >= 2) 2008 dump_intent_log(dmu_objset_zil(os)); 2009 2010 if (dmu_objset_ds(os) != NULL) 2011 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist); 2012 2013 if (verbosity < 2) 2014 return; 2015 2016 if (BP_IS_HOLE(os->os_rootbp)) 2017 return; 2018 2019 dump_object(os, 0, verbosity, &print_header); 2020 object_count = 0; 2021 if (DMU_USERUSED_DNODE(os) != NULL && 2022 DMU_USERUSED_DNODE(os)->dn_type != 0) { 2023 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header); 2024 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header); 2025 } 2026 2027 object = 0; 2028 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 2029 dump_object(os, object, verbosity, &print_header); 2030 object_count++; 2031 } 2032 2033 ASSERT3U(object_count, ==, usedobjs); 2034 2035 (void) printf("\n"); 2036 2037 if (error != ESRCH) { 2038 (void) fprintf(stderr, "dmu_object_next() = %d\n", error); 2039 abort(); 2040 } 2041} 2042 2043static void 2044dump_uberblock(uberblock_t *ub, const char *header, const char *footer) 2045{ 2046 time_t timestamp = ub->ub_timestamp; 2047 2048 (void) printf(header ? header : ""); 2049 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 2050 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 2051 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 2052 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 2053 (void) printf("\ttimestamp = %llu UTC = %s", 2054 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 2055 if (dump_opt['u'] >= 3) { 2056 char blkbuf[BP_SPRINTF_LEN]; 2057 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp); 2058 (void) printf("\trootbp = %s\n", blkbuf); 2059 } 2060 (void) printf(footer ? footer : ""); 2061} 2062 2063static void 2064dump_config(spa_t *spa) 2065{ 2066 dmu_buf_t *db; 2067 size_t nvsize = 0; 2068 int error = 0; 2069 2070 2071 error = dmu_bonus_hold(spa->spa_meta_objset, 2072 spa->spa_config_object, FTAG, &db); 2073 2074 if (error == 0) { 2075 nvsize = *(uint64_t *)db->db_data; 2076 dmu_buf_rele(db, FTAG); 2077 2078 (void) printf("\nMOS Configuration:\n"); 2079 dump_packed_nvlist(spa->spa_meta_objset, 2080 spa->spa_config_object, (void *)&nvsize, 1); 2081 } else { 2082 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d", 2083 (u_longlong_t)spa->spa_config_object, error); 2084 } 2085} 2086 2087static void 2088dump_cachefile(const char *cachefile) 2089{ 2090 int fd; 2091 struct stat64 statbuf; 2092 char *buf; 2093 nvlist_t *config; 2094 2095 if ((fd = open64(cachefile, O_RDONLY)) < 0) { 2096 (void) printf("cannot open '%s': %s\n", cachefile, 2097 strerror(errno)); 2098 exit(1); 2099 } 2100 2101 if (fstat64(fd, &statbuf) != 0) { 2102 (void) printf("failed to stat '%s': %s\n", cachefile, 2103 strerror(errno)); 2104 exit(1); 2105 } 2106 2107 if ((buf = malloc(statbuf.st_size)) == NULL) { 2108 (void) fprintf(stderr, "failed to allocate %llu bytes\n", 2109 (u_longlong_t)statbuf.st_size); 2110 exit(1); 2111 } 2112 2113 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) { 2114 (void) fprintf(stderr, "failed to read %llu bytes\n", 2115 (u_longlong_t)statbuf.st_size); 2116 exit(1); 2117 } 2118 2119 (void) close(fd); 2120 2121 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) { 2122 (void) fprintf(stderr, "failed to unpack nvlist\n"); 2123 exit(1); 2124 } 2125 2126 free(buf); 2127 2128 dump_nvlist(config, 0); 2129 2130 nvlist_free(config); 2131} 2132 2133#define ZDB_MAX_UB_HEADER_SIZE 32 2134 2135static void 2136dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift) 2137{ 2138 vdev_t vd; 2139 vdev_t *vdp = &vd; 2140 char header[ZDB_MAX_UB_HEADER_SIZE]; 2141 2142 vd.vdev_ashift = ashift; 2143 vdp->vdev_top = vdp; 2144 2145 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) { 2146 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i); 2147 uberblock_t *ub = (void *)((char *)lbl + uoff); 2148 2149 if (uberblock_verify(ub)) 2150 continue; 2151 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE, 2152 "Uberblock[%d]\n", i); 2153 dump_uberblock(ub, header, ""); 2154 } 2155} 2156 2157static void 2158dump_label(const char *dev) 2159{ 2160 int fd; 2161 vdev_label_t label; 2162 char *path, *buf = label.vl_vdev_phys.vp_nvlist; 2163 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 2164 struct stat64 statbuf; 2165 uint64_t psize, ashift; 2166 int len = strlen(dev) + 1; 2167 2168 if (strncmp(dev, ZFS_DISK_ROOTD, strlen(ZFS_DISK_ROOTD)) == 0) { 2169 len++; 2170 path = malloc(len); 2171 (void) snprintf(path, len, "%s%s", ZFS_RDISK_ROOTD, 2172 dev + strlen(ZFS_DISK_ROOTD)); 2173 } else { 2174 path = strdup(dev); 2175 } 2176 2177 if ((fd = open64(path, O_RDONLY)) < 0) { 2178 (void) printf("cannot open '%s': %s\n", path, strerror(errno)); 2179 free(path); 2180 exit(1); 2181 } 2182 2183 if (fstat64(fd, &statbuf) != 0) { 2184 (void) printf("failed to stat '%s': %s\n", path, 2185 strerror(errno)); 2186 free(path); 2187 (void) close(fd); 2188 exit(1); 2189 } 2190 2191 if (S_ISBLK(statbuf.st_mode)) { 2192 (void) printf("cannot use '%s': character device required\n", 2193 path); 2194 free(path); 2195 (void) close(fd); 2196 exit(1); 2197 } 2198 2199 psize = statbuf.st_size; 2200 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 2201 2202 for (int l = 0; l < VDEV_LABELS; l++) { 2203 nvlist_t *config = NULL; 2204 2205 (void) printf("--------------------------------------------\n"); 2206 (void) printf("LABEL %d\n", l); 2207 (void) printf("--------------------------------------------\n"); 2208 2209 if (pread64(fd, &label, sizeof (label), 2210 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 2211 (void) printf("failed to read label %d\n", l); 2212 continue; 2213 } 2214 2215 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 2216 (void) printf("failed to unpack label %d\n", l); 2217 ashift = SPA_MINBLOCKSHIFT; 2218 } else { 2219 nvlist_t *vdev_tree = NULL; 2220 2221 dump_nvlist(config, 4); 2222 if ((nvlist_lookup_nvlist(config, 2223 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) || 2224 (nvlist_lookup_uint64(vdev_tree, 2225 ZPOOL_CONFIG_ASHIFT, &ashift) != 0)) 2226 ashift = SPA_MINBLOCKSHIFT; 2227 nvlist_free(config); 2228 } 2229 if (dump_opt['u']) 2230 dump_label_uberblocks(&label, ashift); 2231 } 2232 2233 free(path); 2234 (void) close(fd); 2235} 2236 2237static uint64_t dataset_feature_count[SPA_FEATURES]; 2238 2239/*ARGSUSED*/ 2240static int 2241dump_one_dir(const char *dsname, void *arg) 2242{ 2243 int error; 2244 objset_t *os; 2245 2246 error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os); 2247 if (error) { 2248 (void) printf("Could not open %s, error %d\n", dsname, error); 2249 return (0); 2250 } 2251 2252 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 2253 if (!dmu_objset_ds(os)->ds_feature_inuse[f]) 2254 continue; 2255 ASSERT(spa_feature_table[f].fi_flags & 2256 ZFEATURE_FLAG_PER_DATASET); 2257 dataset_feature_count[f]++; 2258 } 2259 2260 dump_dir(os); 2261 dmu_objset_disown(os, FTAG); 2262 fuid_table_destroy(); 2263 sa_loaded = B_FALSE; 2264 return (0); 2265} 2266 2267/* 2268 * Block statistics. 2269 */ 2270#define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2) 2271typedef struct zdb_blkstats { 2272 uint64_t zb_asize; 2273 uint64_t zb_lsize; 2274 uint64_t zb_psize; 2275 uint64_t zb_count; 2276 uint64_t zb_gangs; 2277 uint64_t zb_ditto_samevdev; 2278 uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE]; 2279} zdb_blkstats_t; 2280 2281/* 2282 * Extended object types to report deferred frees and dedup auto-ditto blocks. 2283 */ 2284#define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0) 2285#define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1) 2286#define ZDB_OT_OTHER (DMU_OT_NUMTYPES + 2) 2287#define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 3) 2288 2289static char *zdb_ot_extname[] = { 2290 "deferred free", 2291 "dedup ditto", 2292 "other", 2293 "Total", 2294}; 2295 2296#define ZB_TOTAL DN_MAX_LEVELS 2297 2298typedef struct zdb_cb { 2299 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1]; 2300 uint64_t zcb_dedup_asize; 2301 uint64_t zcb_dedup_blocks; 2302 uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES]; 2303 uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES] 2304 [BPE_PAYLOAD_SIZE]; 2305 uint64_t zcb_start; 2306 uint64_t zcb_lastprint; 2307 uint64_t zcb_totalasize; 2308 uint64_t zcb_errors[256]; 2309 int zcb_readfails; 2310 int zcb_haderrors; 2311 spa_t *zcb_spa; 2312} zdb_cb_t; 2313 2314static void 2315zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp, 2316 dmu_object_type_t type) 2317{ 2318 uint64_t refcnt = 0; 2319 2320 ASSERT(type < ZDB_OT_TOTAL); 2321 2322 if (zilog && zil_bp_tree_add(zilog, bp) != 0) 2323 return; 2324 2325 for (int i = 0; i < 4; i++) { 2326 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 2327 int t = (i & 1) ? type : ZDB_OT_TOTAL; 2328 int equal; 2329 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 2330 2331 zb->zb_asize += BP_GET_ASIZE(bp); 2332 zb->zb_lsize += BP_GET_LSIZE(bp); 2333 zb->zb_psize += BP_GET_PSIZE(bp); 2334 zb->zb_count++; 2335 2336 /* 2337 * The histogram is only big enough to record blocks up to 2338 * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last, 2339 * "other", bucket. 2340 */ 2341 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT; 2342 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1); 2343 zb->zb_psize_histogram[idx]++; 2344 2345 zb->zb_gangs += BP_COUNT_GANG(bp); 2346 2347 switch (BP_GET_NDVAS(bp)) { 2348 case 2: 2349 if (DVA_GET_VDEV(&bp->blk_dva[0]) == 2350 DVA_GET_VDEV(&bp->blk_dva[1])) 2351 zb->zb_ditto_samevdev++; 2352 break; 2353 case 3: 2354 equal = (DVA_GET_VDEV(&bp->blk_dva[0]) == 2355 DVA_GET_VDEV(&bp->blk_dva[1])) + 2356 (DVA_GET_VDEV(&bp->blk_dva[0]) == 2357 DVA_GET_VDEV(&bp->blk_dva[2])) + 2358 (DVA_GET_VDEV(&bp->blk_dva[1]) == 2359 DVA_GET_VDEV(&bp->blk_dva[2])); 2360 if (equal != 0) 2361 zb->zb_ditto_samevdev++; 2362 break; 2363 } 2364 2365 } 2366 2367 if (BP_IS_EMBEDDED(bp)) { 2368 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++; 2369 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)] 2370 [BPE_GET_PSIZE(bp)]++; 2371 return; 2372 } 2373 2374 if (dump_opt['L']) 2375 return; 2376 2377 if (BP_GET_DEDUP(bp)) { 2378 ddt_t *ddt; 2379 ddt_entry_t *dde; 2380 2381 ddt = ddt_select(zcb->zcb_spa, bp); 2382 ddt_enter(ddt); 2383 dde = ddt_lookup(ddt, bp, B_FALSE); 2384 2385 if (dde == NULL) { 2386 refcnt = 0; 2387 } else { 2388 ddt_phys_t *ddp = ddt_phys_select(dde, bp); 2389 ddt_phys_decref(ddp); 2390 refcnt = ddp->ddp_refcnt; 2391 if (ddt_phys_total_refcnt(dde) == 0) 2392 ddt_remove(ddt, dde); 2393 } 2394 ddt_exit(ddt); 2395 } 2396 2397 VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa, 2398 refcnt ? 0 : spa_first_txg(zcb->zcb_spa), 2399 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0); 2400} 2401 2402/* ARGSUSED */ 2403static void 2404zdb_blkptr_done(zio_t *zio) 2405{ 2406 spa_t *spa = zio->io_spa; 2407 blkptr_t *bp = zio->io_bp; 2408 int ioerr = zio->io_error; 2409 zdb_cb_t *zcb = zio->io_private; 2410 zbookmark_phys_t *zb = &zio->io_bookmark; 2411 2412 zio_data_buf_free(zio->io_data, zio->io_size); 2413 2414 mutex_enter(&spa->spa_scrub_lock); 2415 spa->spa_scrub_inflight--; 2416 cv_broadcast(&spa->spa_scrub_io_cv); 2417 2418 if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { 2419 char blkbuf[BP_SPRINTF_LEN]; 2420 2421 zcb->zcb_haderrors = 1; 2422 zcb->zcb_errors[ioerr]++; 2423 2424 if (dump_opt['b'] >= 2) 2425 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2426 else 2427 blkbuf[0] = '\0'; 2428 2429 (void) printf("zdb_blkptr_cb: " 2430 "Got error %d reading " 2431 "<%llu, %llu, %lld, %llx> %s -- skipping\n", 2432 ioerr, 2433 (u_longlong_t)zb->zb_objset, 2434 (u_longlong_t)zb->zb_object, 2435 (u_longlong_t)zb->zb_level, 2436 (u_longlong_t)zb->zb_blkid, 2437 blkbuf); 2438 } 2439 mutex_exit(&spa->spa_scrub_lock); 2440} 2441 2442/* ARGSUSED */ 2443static int 2444zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2445 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 2446{ 2447 zdb_cb_t *zcb = arg; 2448 dmu_object_type_t type; 2449 boolean_t is_metadata; 2450 2451 if (bp == NULL) 2452 return (0); 2453 2454 if (dump_opt['b'] >= 5 && bp->blk_birth > 0) { 2455 char blkbuf[BP_SPRINTF_LEN]; 2456 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2457 (void) printf("objset %llu object %llu " 2458 "level %lld offset 0x%llx %s\n", 2459 (u_longlong_t)zb->zb_objset, 2460 (u_longlong_t)zb->zb_object, 2461 (longlong_t)zb->zb_level, 2462 (u_longlong_t)blkid2offset(dnp, bp, zb), 2463 blkbuf); 2464 } 2465 2466 if (BP_IS_HOLE(bp)) 2467 return (0); 2468 2469 type = BP_GET_TYPE(bp); 2470 2471 zdb_count_block(zcb, zilog, bp, 2472 (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type); 2473 2474 is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)); 2475 2476 if (!BP_IS_EMBEDDED(bp) && 2477 (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) { 2478 size_t size = BP_GET_PSIZE(bp); 2479 void *data = zio_data_buf_alloc(size); 2480 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW; 2481 2482 /* If it's an intent log block, failure is expected. */ 2483 if (zb->zb_level == ZB_ZIL_LEVEL) 2484 flags |= ZIO_FLAG_SPECULATIVE; 2485 2486 mutex_enter(&spa->spa_scrub_lock); 2487 while (spa->spa_scrub_inflight > max_inflight) 2488 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); 2489 spa->spa_scrub_inflight++; 2490 mutex_exit(&spa->spa_scrub_lock); 2491 2492 zio_nowait(zio_read(NULL, spa, bp, data, size, 2493 zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb)); 2494 } 2495 2496 zcb->zcb_readfails = 0; 2497 2498 /* only call gethrtime() every 100 blocks */ 2499 static int iters; 2500 if (++iters > 100) 2501 iters = 0; 2502 else 2503 return (0); 2504 2505 if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) { 2506 uint64_t now = gethrtime(); 2507 char buf[10]; 2508 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize; 2509 int kb_per_sec = 2510 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000)); 2511 int sec_remaining = 2512 (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec; 2513 2514 zfs_nicenum(bytes, buf, sizeof (buf)); 2515 (void) fprintf(stderr, 2516 "\r%5s completed (%4dMB/s) " 2517 "estimated time remaining: %uhr %02umin %02usec ", 2518 buf, kb_per_sec / 1024, 2519 sec_remaining / 60 / 60, 2520 sec_remaining / 60 % 60, 2521 sec_remaining % 60); 2522 2523 zcb->zcb_lastprint = now; 2524 } 2525 2526 return (0); 2527} 2528 2529static void 2530zdb_leak(void *arg, uint64_t start, uint64_t size) 2531{ 2532 vdev_t *vd = arg; 2533 2534 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 2535 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size); 2536} 2537 2538static metaslab_ops_t zdb_metaslab_ops = { 2539 NULL /* alloc */ 2540}; 2541 2542static void 2543zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb) 2544{ 2545 ddt_bookmark_t ddb = { 0 }; 2546 ddt_entry_t dde; 2547 int error; 2548 2549 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) { 2550 blkptr_t blk; 2551 ddt_phys_t *ddp = dde.dde_phys; 2552 2553 if (ddb.ddb_class == DDT_CLASS_UNIQUE) 2554 return; 2555 2556 ASSERT(ddt_phys_total_refcnt(&dde) > 1); 2557 2558 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 2559 if (ddp->ddp_phys_birth == 0) 2560 continue; 2561 ddt_bp_create(ddb.ddb_checksum, 2562 &dde.dde_key, ddp, &blk); 2563 if (p == DDT_PHYS_DITTO) { 2564 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO); 2565 } else { 2566 zcb->zcb_dedup_asize += 2567 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1); 2568 zcb->zcb_dedup_blocks++; 2569 } 2570 } 2571 if (!dump_opt['L']) { 2572 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum]; 2573 ddt_enter(ddt); 2574 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL); 2575 ddt_exit(ddt); 2576 } 2577 } 2578 2579 ASSERT(error == ENOENT); 2580} 2581 2582static void 2583zdb_leak_init(spa_t *spa, zdb_cb_t *zcb) 2584{ 2585 zcb->zcb_spa = spa; 2586 2587 if (!dump_opt['L']) { 2588 vdev_t *rvd = spa->spa_root_vdev; 2589 for (uint64_t c = 0; c < rvd->vdev_children; c++) { 2590 vdev_t *vd = rvd->vdev_child[c]; 2591 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 2592 metaslab_t *msp = vd->vdev_ms[m]; 2593 mutex_enter(&msp->ms_lock); 2594 metaslab_unload(msp); 2595 2596 /* 2597 * For leak detection, we overload the metaslab 2598 * ms_tree to contain allocated segments 2599 * instead of free segments. As a result, 2600 * we can't use the normal metaslab_load/unload 2601 * interfaces. 2602 */ 2603 if (msp->ms_sm != NULL) { 2604 (void) fprintf(stderr, 2605 "\rloading space map for " 2606 "vdev %llu of %llu, " 2607 "metaslab %llu of %llu ...", 2608 (longlong_t)c, 2609 (longlong_t)rvd->vdev_children, 2610 (longlong_t)m, 2611 (longlong_t)vd->vdev_ms_count); 2612 2613 msp->ms_ops = &zdb_metaslab_ops; 2614 2615 /* 2616 * We don't want to spend the CPU 2617 * manipulating the size-ordered 2618 * tree, so clear the range_tree 2619 * ops. 2620 */ 2621 msp->ms_tree->rt_ops = NULL; 2622 VERIFY0(space_map_load(msp->ms_sm, 2623 msp->ms_tree, SM_ALLOC)); 2624 msp->ms_loaded = B_TRUE; 2625 } 2626 mutex_exit(&msp->ms_lock); 2627 } 2628 } 2629 (void) fprintf(stderr, "\n"); 2630 } 2631 2632 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2633 2634 zdb_ddt_leak_init(spa, zcb); 2635 2636 spa_config_exit(spa, SCL_CONFIG, FTAG); 2637} 2638 2639static void 2640zdb_leak_fini(spa_t *spa) 2641{ 2642 if (!dump_opt['L']) { 2643 vdev_t *rvd = spa->spa_root_vdev; 2644 for (int c = 0; c < rvd->vdev_children; c++) { 2645 vdev_t *vd = rvd->vdev_child[c]; 2646 for (int m = 0; m < vd->vdev_ms_count; m++) { 2647 metaslab_t *msp = vd->vdev_ms[m]; 2648 mutex_enter(&msp->ms_lock); 2649 2650 /* 2651 * The ms_tree has been overloaded to 2652 * contain allocated segments. Now that we 2653 * finished traversing all blocks, any 2654 * block that remains in the ms_tree 2655 * represents an allocated block that we 2656 * did not claim during the traversal. 2657 * Claimed blocks would have been removed 2658 * from the ms_tree. 2659 */ 2660 range_tree_vacate(msp->ms_tree, zdb_leak, vd); 2661 msp->ms_loaded = B_FALSE; 2662 2663 mutex_exit(&msp->ms_lock); 2664 } 2665 } 2666 } 2667} 2668 2669/* ARGSUSED */ 2670static int 2671count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 2672{ 2673 zdb_cb_t *zcb = arg; 2674 2675 if (dump_opt['b'] >= 5) { 2676 char blkbuf[BP_SPRINTF_LEN]; 2677 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2678 (void) printf("[%s] %s\n", 2679 "deferred free", blkbuf); 2680 } 2681 zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED); 2682 return (0); 2683} 2684 2685static int 2686dump_block_stats(spa_t *spa) 2687{ 2688 zdb_cb_t zcb = { 0 }; 2689 zdb_blkstats_t *zb, *tzb; 2690 uint64_t norm_alloc, norm_space, total_alloc, total_found; 2691 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD; 2692 boolean_t leaks = B_FALSE; 2693 2694 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n", 2695 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "", 2696 (dump_opt['c'] == 1) ? "metadata " : "", 2697 dump_opt['c'] ? "checksums " : "", 2698 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "", 2699 !dump_opt['L'] ? "nothing leaked " : ""); 2700 2701 /* 2702 * Load all space maps as SM_ALLOC maps, then traverse the pool 2703 * claiming each block we discover. If the pool is perfectly 2704 * consistent, the space maps will be empty when we're done. 2705 * Anything left over is a leak; any block we can't claim (because 2706 * it's not part of any space map) is a double allocation, 2707 * reference to a freed block, or an unclaimed log block. 2708 */ 2709 zdb_leak_init(spa, &zcb); 2710 2711 /* 2712 * If there's a deferred-free bplist, process that first. 2713 */ 2714 (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj, 2715 count_block_cb, &zcb, NULL); 2716 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 2717 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj, 2718 count_block_cb, &zcb, NULL); 2719 } 2720 if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) { 2721 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset, 2722 spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb, 2723 &zcb, NULL)); 2724 } 2725 2726 if (dump_opt['c'] > 1) 2727 flags |= TRAVERSE_PREFETCH_DATA; 2728 2729 zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa)); 2730 zcb.zcb_start = zcb.zcb_lastprint = gethrtime(); 2731 zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb); 2732 2733 /* 2734 * If we've traversed the data blocks then we need to wait for those 2735 * I/Os to complete. We leverage "The Godfather" zio to wait on 2736 * all async I/Os to complete. 2737 */ 2738 if (dump_opt['c']) { 2739 for (int i = 0; i < max_ncpus; i++) { 2740 (void) zio_wait(spa->spa_async_zio_root[i]); 2741 spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, 2742 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | 2743 ZIO_FLAG_GODFATHER); 2744 } 2745 } 2746 2747 if (zcb.zcb_haderrors) { 2748 (void) printf("\nError counts:\n\n"); 2749 (void) printf("\t%5s %s\n", "errno", "count"); 2750 for (int e = 0; e < 256; e++) { 2751 if (zcb.zcb_errors[e] != 0) { 2752 (void) printf("\t%5d %llu\n", 2753 e, (u_longlong_t)zcb.zcb_errors[e]); 2754 } 2755 } 2756 } 2757 2758 /* 2759 * Report any leaked segments. 2760 */ 2761 zdb_leak_fini(spa); 2762 2763 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL]; 2764 2765 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 2766 norm_space = metaslab_class_get_space(spa_normal_class(spa)); 2767 2768 total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa)); 2769 total_found = tzb->zb_asize - zcb.zcb_dedup_asize; 2770 2771 if (total_found == total_alloc) { 2772 if (!dump_opt['L']) 2773 (void) printf("\n\tNo leaks (block sum matches space" 2774 " maps exactly)\n"); 2775 } else { 2776 (void) printf("block traversal size %llu != alloc %llu " 2777 "(%s %lld)\n", 2778 (u_longlong_t)total_found, 2779 (u_longlong_t)total_alloc, 2780 (dump_opt['L']) ? "unreachable" : "leaked", 2781 (longlong_t)(total_alloc - total_found)); 2782 leaks = B_TRUE; 2783 } 2784 2785 if (tzb->zb_count == 0) 2786 return (2); 2787 2788 (void) printf("\n"); 2789 (void) printf("\tbp count: %10llu\n", 2790 (u_longlong_t)tzb->zb_count); 2791 (void) printf("\tganged count: %10llu\n", 2792 (longlong_t)tzb->zb_gangs); 2793 (void) printf("\tbp logical: %10llu avg: %6llu\n", 2794 (u_longlong_t)tzb->zb_lsize, 2795 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 2796 (void) printf("\tbp physical: %10llu avg:" 2797 " %6llu compression: %6.2f\n", 2798 (u_longlong_t)tzb->zb_psize, 2799 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 2800 (double)tzb->zb_lsize / tzb->zb_psize); 2801 (void) printf("\tbp allocated: %10llu avg:" 2802 " %6llu compression: %6.2f\n", 2803 (u_longlong_t)tzb->zb_asize, 2804 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 2805 (double)tzb->zb_lsize / tzb->zb_asize); 2806 (void) printf("\tbp deduped: %10llu ref>1:" 2807 " %6llu deduplication: %6.2f\n", 2808 (u_longlong_t)zcb.zcb_dedup_asize, 2809 (u_longlong_t)zcb.zcb_dedup_blocks, 2810 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0); 2811 (void) printf("\tSPA allocated: %10llu used: %5.2f%%\n", 2812 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space); 2813 2814 for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) { 2815 if (zcb.zcb_embedded_blocks[i] == 0) 2816 continue; 2817 (void) printf("\n"); 2818 (void) printf("\tadditional, non-pointer bps of type %u: " 2819 "%10llu\n", 2820 i, (u_longlong_t)zcb.zcb_embedded_blocks[i]); 2821 2822 if (dump_opt['b'] >= 3) { 2823 (void) printf("\t number of (compressed) bytes: " 2824 "number of bps\n"); 2825 dump_histogram(zcb.zcb_embedded_histogram[i], 2826 sizeof (zcb.zcb_embedded_histogram[i]) / 2827 sizeof (zcb.zcb_embedded_histogram[i][0]), 0); 2828 } 2829 } 2830 2831 if (tzb->zb_ditto_samevdev != 0) { 2832 (void) printf("\tDittoed blocks on same vdev: %llu\n", 2833 (longlong_t)tzb->zb_ditto_samevdev); 2834 } 2835 2836 if (dump_opt['b'] >= 2) { 2837 int l, t, level; 2838 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 2839 "\t avg\t comp\t%%Total\tType\n"); 2840 2841 for (t = 0; t <= ZDB_OT_TOTAL; t++) { 2842 char csize[32], lsize[32], psize[32], asize[32]; 2843 char avg[32], gang[32]; 2844 char *typename; 2845 2846 if (t < DMU_OT_NUMTYPES) 2847 typename = dmu_ot[t].ot_name; 2848 else 2849 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES]; 2850 2851 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 2852 (void) printf("%6s\t%5s\t%5s\t%5s" 2853 "\t%5s\t%5s\t%6s\t%s\n", 2854 "-", 2855 "-", 2856 "-", 2857 "-", 2858 "-", 2859 "-", 2860 "-", 2861 typename); 2862 continue; 2863 } 2864 2865 for (l = ZB_TOTAL - 1; l >= -1; l--) { 2866 level = (l == -1 ? ZB_TOTAL : l); 2867 zb = &zcb.zcb_type[level][t]; 2868 2869 if (zb->zb_asize == 0) 2870 continue; 2871 2872 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 2873 continue; 2874 2875 if (level == 0 && zb->zb_asize == 2876 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 2877 continue; 2878 2879 zdb_nicenum(zb->zb_count, csize); 2880 zdb_nicenum(zb->zb_lsize, lsize); 2881 zdb_nicenum(zb->zb_psize, psize); 2882 zdb_nicenum(zb->zb_asize, asize); 2883 zdb_nicenum(zb->zb_asize / zb->zb_count, avg); 2884 zdb_nicenum(zb->zb_gangs, gang); 2885 2886 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 2887 "\t%5.2f\t%6.2f\t", 2888 csize, lsize, psize, asize, avg, 2889 (double)zb->zb_lsize / zb->zb_psize, 2890 100.0 * zb->zb_asize / tzb->zb_asize); 2891 2892 if (level == ZB_TOTAL) 2893 (void) printf("%s\n", typename); 2894 else 2895 (void) printf(" L%d %s\n", 2896 level, typename); 2897 2898 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) { 2899 (void) printf("\t number of ganged " 2900 "blocks: %s\n", gang); 2901 } 2902 2903 if (dump_opt['b'] >= 4) { 2904 (void) printf("psize " 2905 "(in 512-byte sectors): " 2906 "number of blocks\n"); 2907 dump_histogram(zb->zb_psize_histogram, 2908 PSIZE_HISTO_SIZE, 0); 2909 } 2910 } 2911 } 2912 } 2913 2914 (void) printf("\n"); 2915 2916 if (leaks) 2917 return (2); 2918 2919 if (zcb.zcb_haderrors) 2920 return (3); 2921 2922 return (0); 2923} 2924 2925typedef struct zdb_ddt_entry { 2926 ddt_key_t zdde_key; 2927 uint64_t zdde_ref_blocks; 2928 uint64_t zdde_ref_lsize; 2929 uint64_t zdde_ref_psize; 2930 uint64_t zdde_ref_dsize; 2931 avl_node_t zdde_node; 2932} zdb_ddt_entry_t; 2933 2934/* ARGSUSED */ 2935static int 2936zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2937 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 2938{ 2939 avl_tree_t *t = arg; 2940 avl_index_t where; 2941 zdb_ddt_entry_t *zdde, zdde_search; 2942 2943 if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp)) 2944 return (0); 2945 2946 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) { 2947 (void) printf("traversing objset %llu, %llu objects, " 2948 "%lu blocks so far\n", 2949 (u_longlong_t)zb->zb_objset, 2950 (u_longlong_t)BP_GET_FILL(bp), 2951 avl_numnodes(t)); 2952 } 2953 2954 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF || 2955 BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) 2956 return (0); 2957 2958 ddt_key_fill(&zdde_search.zdde_key, bp); 2959 2960 zdde = avl_find(t, &zdde_search, &where); 2961 2962 if (zdde == NULL) { 2963 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL); 2964 zdde->zdde_key = zdde_search.zdde_key; 2965 avl_insert(t, zdde, where); 2966 } 2967 2968 zdde->zdde_ref_blocks += 1; 2969 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp); 2970 zdde->zdde_ref_psize += BP_GET_PSIZE(bp); 2971 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp); 2972 2973 return (0); 2974} 2975 2976static void 2977dump_simulated_ddt(spa_t *spa) 2978{ 2979 avl_tree_t t; 2980 void *cookie = NULL; 2981 zdb_ddt_entry_t *zdde; 2982 ddt_histogram_t ddh_total = { 0 }; 2983 ddt_stat_t dds_total = { 0 }; 2984 2985 avl_create(&t, ddt_entry_compare, 2986 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node)); 2987 2988 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2989 2990 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA, 2991 zdb_ddt_add_cb, &t); 2992 2993 spa_config_exit(spa, SCL_CONFIG, FTAG); 2994 2995 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) { 2996 ddt_stat_t dds; 2997 uint64_t refcnt = zdde->zdde_ref_blocks; 2998 ASSERT(refcnt != 0); 2999 3000 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt; 3001 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt; 3002 dds.dds_psize = zdde->zdde_ref_psize / refcnt; 3003 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt; 3004 3005 dds.dds_ref_blocks = zdde->zdde_ref_blocks; 3006 dds.dds_ref_lsize = zdde->zdde_ref_lsize; 3007 dds.dds_ref_psize = zdde->zdde_ref_psize; 3008 dds.dds_ref_dsize = zdde->zdde_ref_dsize; 3009 3010 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1], 3011 &dds, 0); 3012 3013 umem_free(zdde, sizeof (*zdde)); 3014 } 3015 3016 avl_destroy(&t); 3017 3018 ddt_histogram_stat(&dds_total, &ddh_total); 3019 3020 (void) printf("Simulated DDT histogram:\n"); 3021 3022 zpool_dump_ddt(&dds_total, &ddh_total); 3023 3024 dump_dedup_ratio(&dds_total); 3025} 3026 3027static void 3028dump_zpool(spa_t *spa) 3029{ 3030 dsl_pool_t *dp = spa_get_dsl(spa); 3031 int rc = 0; 3032 3033 if (dump_opt['S']) { 3034 dump_simulated_ddt(spa); 3035 return; 3036 } 3037 3038 if (!dump_opt['e'] && dump_opt['C'] > 1) { 3039 (void) printf("\nCached configuration:\n"); 3040 dump_nvlist(spa->spa_config, 8); 3041 } 3042 3043 if (dump_opt['C']) 3044 dump_config(spa); 3045 3046 if (dump_opt['u']) 3047 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n"); 3048 3049 if (dump_opt['D']) 3050 dump_all_ddts(spa); 3051 3052 if (dump_opt['d'] > 2 || dump_opt['m']) 3053 dump_metaslabs(spa); 3054 if (dump_opt['M']) 3055 dump_metaslab_groups(spa); 3056 3057 if (dump_opt['d'] || dump_opt['i']) { 3058 dump_dir(dp->dp_meta_objset); 3059 if (dump_opt['d'] >= 3) { 3060 dump_full_bpobj(&spa->spa_deferred_bpobj, 3061 "Deferred frees", 0); 3062 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 3063 dump_full_bpobj( 3064 &spa->spa_dsl_pool->dp_free_bpobj, 3065 "Pool snapshot frees", 0); 3066 } 3067 3068 if (spa_feature_is_active(spa, 3069 SPA_FEATURE_ASYNC_DESTROY)) { 3070 dump_bptree(spa->spa_meta_objset, 3071 spa->spa_dsl_pool->dp_bptree_obj, 3072 "Pool dataset frees"); 3073 } 3074 dump_dtl(spa->spa_root_vdev, 0); 3075 } 3076 (void) dmu_objset_find(spa_name(spa), dump_one_dir, 3077 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 3078 3079 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 3080 uint64_t refcount; 3081 3082 if (!(spa_feature_table[f].fi_flags & 3083 ZFEATURE_FLAG_PER_DATASET)) { 3084 ASSERT0(dataset_feature_count[f]); 3085 continue; 3086 } 3087 (void) feature_get_refcount(spa, 3088 &spa_feature_table[f], &refcount); 3089 if (dataset_feature_count[f] != refcount) { 3090 (void) printf("%s feature refcount mismatch: " 3091 "%lld datasets != %lld refcount\n", 3092 spa_feature_table[f].fi_uname, 3093 (longlong_t)dataset_feature_count[f], 3094 (longlong_t)refcount); 3095 rc = 2; 3096 } else { 3097 (void) printf("Verified %s feature refcount " 3098 "of %llu is correct\n", 3099 spa_feature_table[f].fi_uname, 3100 (longlong_t)refcount); 3101 } 3102 } 3103 } 3104 if (rc == 0 && (dump_opt['b'] || dump_opt['c'])) 3105 rc = dump_block_stats(spa); 3106 3107 if (rc == 0) 3108 rc = verify_spacemap_refcounts(spa); 3109 3110 if (dump_opt['s']) 3111 show_pool_stats(spa); 3112 3113 if (dump_opt['h']) 3114 dump_history(spa); 3115 3116 if (rc != 0) { 3117 dump_debug_buffer(); 3118 exit(rc); 3119 } 3120} 3121 3122#define ZDB_FLAG_CHECKSUM 0x0001 3123#define ZDB_FLAG_DECOMPRESS 0x0002 3124#define ZDB_FLAG_BSWAP 0x0004 3125#define ZDB_FLAG_GBH 0x0008 3126#define ZDB_FLAG_INDIRECT 0x0010 3127#define ZDB_FLAG_PHYS 0x0020 3128#define ZDB_FLAG_RAW 0x0040 3129#define ZDB_FLAG_PRINT_BLKPTR 0x0080 3130 3131int flagbits[256]; 3132 3133static void 3134zdb_print_blkptr(blkptr_t *bp, int flags) 3135{ 3136 char blkbuf[BP_SPRINTF_LEN]; 3137 3138 if (flags & ZDB_FLAG_BSWAP) 3139 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 3140 3141 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3142 (void) printf("%s\n", blkbuf); 3143} 3144 3145static void 3146zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 3147{ 3148 int i; 3149 3150 for (i = 0; i < nbps; i++) 3151 zdb_print_blkptr(&bp[i], flags); 3152} 3153 3154static void 3155zdb_dump_gbh(void *buf, int flags) 3156{ 3157 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 3158} 3159 3160static void 3161zdb_dump_block_raw(void *buf, uint64_t size, int flags) 3162{ 3163 if (flags & ZDB_FLAG_BSWAP) 3164 byteswap_uint64_array(buf, size); 3165 (void) write(1, buf, size); 3166} 3167 3168static void 3169zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 3170{ 3171 uint64_t *d = (uint64_t *)buf; 3172 int nwords = size / sizeof (uint64_t); 3173 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 3174 int i, j; 3175 char *hdr, *c; 3176 3177 3178 if (do_bswap) 3179 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 3180 else 3181 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 3182 3183 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 3184 3185 for (i = 0; i < nwords; i += 2) { 3186 (void) printf("%06llx: %016llx %016llx ", 3187 (u_longlong_t)(i * sizeof (uint64_t)), 3188 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 3189 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 3190 3191 c = (char *)&d[i]; 3192 for (j = 0; j < 2 * sizeof (uint64_t); j++) 3193 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 3194 (void) printf("\n"); 3195 } 3196} 3197 3198/* 3199 * There are two acceptable formats: 3200 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 3201 * child[.child]* - For example: 0.1.1 3202 * 3203 * The second form can be used to specify arbitrary vdevs anywhere 3204 * in the heirarchy. For example, in a pool with a mirror of 3205 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 3206 */ 3207static vdev_t * 3208zdb_vdev_lookup(vdev_t *vdev, char *path) 3209{ 3210 char *s, *p, *q; 3211 int i; 3212 3213 if (vdev == NULL) 3214 return (NULL); 3215 3216 /* First, assume the x.x.x.x format */ 3217 i = (int)strtoul(path, &s, 10); 3218 if (s == path || (s && *s != '.' && *s != '\0')) 3219 goto name; 3220 if (i < 0 || i >= vdev->vdev_children) 3221 return (NULL); 3222 3223 vdev = vdev->vdev_child[i]; 3224 if (*s == '\0') 3225 return (vdev); 3226 return (zdb_vdev_lookup(vdev, s+1)); 3227 3228name: 3229 for (i = 0; i < vdev->vdev_children; i++) { 3230 vdev_t *vc = vdev->vdev_child[i]; 3231 3232 if (vc->vdev_path == NULL) { 3233 vc = zdb_vdev_lookup(vc, path); 3234 if (vc == NULL) 3235 continue; 3236 else 3237 return (vc); 3238 } 3239 3240 p = strrchr(vc->vdev_path, '/'); 3241 p = p ? p + 1 : vc->vdev_path; 3242 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 3243 3244 if (strcmp(vc->vdev_path, path) == 0) 3245 return (vc); 3246 if (strcmp(p, path) == 0) 3247 return (vc); 3248 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 3249 return (vc); 3250 } 3251 3252 return (NULL); 3253} 3254 3255/* 3256 * Read a block from a pool and print it out. The syntax of the 3257 * block descriptor is: 3258 * 3259 * pool:vdev_specifier:offset:size[:flags] 3260 * 3261 * pool - The name of the pool you wish to read from 3262 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 3263 * offset - offset, in hex, in bytes 3264 * size - Amount of data to read, in hex, in bytes 3265 * flags - A string of characters specifying options 3266 * b: Decode a blkptr at given offset within block 3267 * *c: Calculate and display checksums 3268 * d: Decompress data before dumping 3269 * e: Byteswap data before dumping 3270 * g: Display data as a gang block header 3271 * i: Display as an indirect block 3272 * p: Do I/O to physical offset 3273 * r: Dump raw data to stdout 3274 * 3275 * * = not yet implemented 3276 */ 3277static void 3278zdb_read_block(char *thing, spa_t *spa) 3279{ 3280 blkptr_t blk, *bp = &blk; 3281 dva_t *dva = bp->blk_dva; 3282 int flags = 0; 3283 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0; 3284 zio_t *zio; 3285 vdev_t *vd; 3286 void *pbuf, *lbuf, *buf; 3287 char *s, *p, *dup, *vdev, *flagstr; 3288 int i, error; 3289 3290 dup = strdup(thing); 3291 s = strtok(dup, ":"); 3292 vdev = s ? s : ""; 3293 s = strtok(NULL, ":"); 3294 offset = strtoull(s ? s : "", NULL, 16); 3295 s = strtok(NULL, ":"); 3296 size = strtoull(s ? s : "", NULL, 16); 3297 s = strtok(NULL, ":"); 3298 flagstr = s ? s : ""; 3299 3300 s = NULL; 3301 if (size == 0) 3302 s = "size must not be zero"; 3303 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 3304 s = "size must be a multiple of sector size"; 3305 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 3306 s = "offset must be a multiple of sector size"; 3307 if (s) { 3308 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 3309 free(dup); 3310 return; 3311 } 3312 3313 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 3314 for (i = 0; flagstr[i]; i++) { 3315 int bit = flagbits[(uchar_t)flagstr[i]]; 3316 3317 if (bit == 0) { 3318 (void) printf("***Invalid flag: %c\n", 3319 flagstr[i]); 3320 continue; 3321 } 3322 flags |= bit; 3323 3324 /* If it's not something with an argument, keep going */ 3325 if ((bit & (ZDB_FLAG_CHECKSUM | 3326 ZDB_FLAG_PRINT_BLKPTR)) == 0) 3327 continue; 3328 3329 p = &flagstr[i + 1]; 3330 if (bit == ZDB_FLAG_PRINT_BLKPTR) 3331 blkptr_offset = strtoull(p, &p, 16); 3332 if (*p != ':' && *p != '\0') { 3333 (void) printf("***Invalid flag arg: '%s'\n", s); 3334 free(dup); 3335 return; 3336 } 3337 i += p - &flagstr[i + 1]; /* skip over the number */ 3338 } 3339 } 3340 3341 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 3342 if (vd == NULL) { 3343 (void) printf("***Invalid vdev: %s\n", vdev); 3344 free(dup); 3345 return; 3346 } else { 3347 if (vd->vdev_path) 3348 (void) fprintf(stderr, "Found vdev: %s\n", 3349 vd->vdev_path); 3350 else 3351 (void) fprintf(stderr, "Found vdev type: %s\n", 3352 vd->vdev_ops->vdev_op_type); 3353 } 3354 3355 psize = size; 3356 lsize = size; 3357 3358 pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3359 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3360 3361 BP_ZERO(bp); 3362 3363 DVA_SET_VDEV(&dva[0], vd->vdev_id); 3364 DVA_SET_OFFSET(&dva[0], offset); 3365 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH)); 3366 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize)); 3367 3368 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL); 3369 3370 BP_SET_LSIZE(bp, lsize); 3371 BP_SET_PSIZE(bp, psize); 3372 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF); 3373 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF); 3374 BP_SET_TYPE(bp, DMU_OT_NONE); 3375 BP_SET_LEVEL(bp, 0); 3376 BP_SET_DEDUP(bp, 0); 3377 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER); 3378 3379 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 3380 zio = zio_root(spa, NULL, NULL, 0); 3381 3382 if (vd == vd->vdev_top) { 3383 /* 3384 * Treat this as a normal block read. 3385 */ 3386 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL, 3387 ZIO_PRIORITY_SYNC_READ, 3388 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL)); 3389 } else { 3390 /* 3391 * Treat this as a vdev child I/O. 3392 */ 3393 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize, 3394 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, 3395 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 3396 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | 3397 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL)); 3398 } 3399 3400 error = zio_wait(zio); 3401 spa_config_exit(spa, SCL_STATE, FTAG); 3402 3403 if (error) { 3404 (void) printf("Read of %s failed, error: %d\n", thing, error); 3405 goto out; 3406 } 3407 3408 if (flags & ZDB_FLAG_DECOMPRESS) { 3409 /* 3410 * We don't know how the data was compressed, so just try 3411 * every decompress function at every inflated blocksize. 3412 */ 3413 enum zio_compress c; 3414 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3415 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3416 3417 bcopy(pbuf, pbuf2, psize); 3418 3419 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize, 3420 SPA_MAXBLOCKSIZE - psize) == 0); 3421 3422 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize, 3423 SPA_MAXBLOCKSIZE - psize) == 0); 3424 3425 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize; 3426 lsize -= SPA_MINBLOCKSIZE) { 3427 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) { 3428 if (zio_decompress_data(c, pbuf, lbuf, 3429 psize, lsize) == 0 && 3430 zio_decompress_data(c, pbuf2, lbuf2, 3431 psize, lsize) == 0 && 3432 bcmp(lbuf, lbuf2, lsize) == 0) 3433 break; 3434 } 3435 if (c != ZIO_COMPRESS_FUNCTIONS) 3436 break; 3437 lsize -= SPA_MINBLOCKSIZE; 3438 } 3439 3440 umem_free(pbuf2, SPA_MAXBLOCKSIZE); 3441 umem_free(lbuf2, SPA_MAXBLOCKSIZE); 3442 3443 if (lsize <= psize) { 3444 (void) printf("Decompress of %s failed\n", thing); 3445 goto out; 3446 } 3447 buf = lbuf; 3448 size = lsize; 3449 } else { 3450 buf = pbuf; 3451 size = psize; 3452 } 3453 3454 if (flags & ZDB_FLAG_PRINT_BLKPTR) 3455 zdb_print_blkptr((blkptr_t *)(void *) 3456 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 3457 else if (flags & ZDB_FLAG_RAW) 3458 zdb_dump_block_raw(buf, size, flags); 3459 else if (flags & ZDB_FLAG_INDIRECT) 3460 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 3461 flags); 3462 else if (flags & ZDB_FLAG_GBH) 3463 zdb_dump_gbh(buf, flags); 3464 else 3465 zdb_dump_block(thing, buf, size, flags); 3466 3467out: 3468 umem_free(pbuf, SPA_MAXBLOCKSIZE); 3469 umem_free(lbuf, SPA_MAXBLOCKSIZE); 3470 free(dup); 3471} 3472 3473static boolean_t 3474pool_match(nvlist_t *cfg, char *tgt) 3475{ 3476 uint64_t v, guid = strtoull(tgt, NULL, 0); 3477 char *s; 3478 3479 if (guid != 0) { 3480 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0) 3481 return (v == guid); 3482 } else { 3483 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0) 3484 return (strcmp(s, tgt) == 0); 3485 } 3486 return (B_FALSE); 3487} 3488 3489static char * 3490find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv) 3491{ 3492 nvlist_t *pools; 3493 nvlist_t *match = NULL; 3494 char *name = NULL; 3495 char *sepp = NULL; 3496 char sep = '\0'; 3497 int count = 0; 3498 importargs_t args = { 0 }; 3499 3500 args.paths = dirc; 3501 args.path = dirv; 3502 args.can_be_active = B_TRUE; 3503 3504 if ((sepp = strpbrk(*target, "/@")) != NULL) { 3505 sep = *sepp; 3506 *sepp = '\0'; 3507 } 3508 3509 pools = zpool_search_import(g_zfs, &args); 3510 3511 if (pools != NULL) { 3512 nvpair_t *elem = NULL; 3513 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) { 3514 verify(nvpair_value_nvlist(elem, configp) == 0); 3515 if (pool_match(*configp, *target)) { 3516 count++; 3517 if (match != NULL) { 3518 /* print previously found config */ 3519 if (name != NULL) { 3520 (void) printf("%s\n", name); 3521 dump_nvlist(match, 8); 3522 name = NULL; 3523 } 3524 (void) printf("%s\n", 3525 nvpair_name(elem)); 3526 dump_nvlist(*configp, 8); 3527 } else { 3528 match = *configp; 3529 name = nvpair_name(elem); 3530 } 3531 } 3532 } 3533 } 3534 if (count > 1) 3535 (void) fatal("\tMatched %d pools - use pool GUID " 3536 "instead of pool name or \n" 3537 "\tpool name part of a dataset name to select pool", count); 3538 3539 if (sepp) 3540 *sepp = sep; 3541 /* 3542 * If pool GUID was specified for pool id, replace it with pool name 3543 */ 3544 if (name && (strstr(*target, name) != *target)) { 3545 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0); 3546 3547 *target = umem_alloc(sz, UMEM_NOFAIL); 3548 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : ""); 3549 } 3550 3551 *configp = name ? match : NULL; 3552 3553 return (name); 3554} 3555 3556int 3557main(int argc, char **argv) 3558{ 3559 int i, c; 3560 struct rlimit rl = { 1024, 1024 }; 3561 spa_t *spa = NULL; 3562 objset_t *os = NULL; 3563 int dump_all = 1; 3564 int verbose = 0; 3565 int error = 0; 3566 char **searchdirs = NULL; 3567 int nsearch = 0; 3568 char *target; 3569 nvlist_t *policy = NULL; 3570 uint64_t max_txg = UINT64_MAX; 3571 int rewind = ZPOOL_NEVER_REWIND; 3572 char *spa_config_path_env; 3573 boolean_t target_is_spa = B_TRUE; 3574 3575 (void) setrlimit(RLIMIT_NOFILE, &rl); 3576 (void) enable_extended_FILE_stdio(-1, -1); 3577 3578 dprintf_setup(&argc, argv); 3579 3580 /* 3581 * If there is an environment variable SPA_CONFIG_PATH it overrides 3582 * default spa_config_path setting. If -U flag is specified it will 3583 * override this environment variable settings once again. 3584 */ 3585 spa_config_path_env = getenv("SPA_CONFIG_PATH"); 3586 if (spa_config_path_env != NULL) 3587 spa_config_path = spa_config_path_env; 3588 3589 while ((c = getopt(argc, argv, 3590 "bcdhilmMI:suCDRSAFLXx:evp:t:U:PG")) != -1) { 3591 switch (c) { 3592 case 'b': 3593 case 'c': 3594 case 'd': 3595 case 'h': 3596 case 'i': 3597 case 'l': 3598 case 'm': 3599 case 's': 3600 case 'u': 3601 case 'C': 3602 case 'D': 3603 case 'M': 3604 case 'R': 3605 case 'S': 3606 case 'G': 3607 dump_opt[c]++; 3608 dump_all = 0; 3609 break; 3610 case 'A': 3611 case 'F': 3612 case 'L': 3613 case 'X': 3614 case 'e': 3615 case 'P': 3616 dump_opt[c]++; 3617 break; 3618 case 'I': 3619 max_inflight = strtoull(optarg, NULL, 0); 3620 if (max_inflight == 0) { 3621 (void) fprintf(stderr, "maximum number " 3622 "of inflight I/Os must be greater " 3623 "than 0\n"); 3624 usage(); 3625 } 3626 break; 3627 case 'p': 3628 if (searchdirs == NULL) { 3629 searchdirs = umem_alloc(sizeof (char *), 3630 UMEM_NOFAIL); 3631 } else { 3632 char **tmp = umem_alloc((nsearch + 1) * 3633 sizeof (char *), UMEM_NOFAIL); 3634 bcopy(searchdirs, tmp, nsearch * 3635 sizeof (char *)); 3636 umem_free(searchdirs, 3637 nsearch * sizeof (char *)); 3638 searchdirs = tmp; 3639 } 3640 searchdirs[nsearch++] = optarg; 3641 break; 3642 case 't': 3643 max_txg = strtoull(optarg, NULL, 0); 3644 if (max_txg < TXG_INITIAL) { 3645 (void) fprintf(stderr, "incorrect txg " 3646 "specified: %s\n", optarg); 3647 usage(); 3648 } 3649 break; 3650 case 'U': 3651 spa_config_path = optarg; 3652 break; 3653 case 'v': 3654 verbose++; 3655 break; 3656 case 'x': 3657 vn_dumpdir = optarg; 3658 break; 3659 default: 3660 usage(); 3661 break; 3662 } 3663 } 3664 3665 if (!dump_opt['e'] && searchdirs != NULL) { 3666 (void) fprintf(stderr, "-p option requires use of -e\n"); 3667 usage(); 3668 } 3669 3670 /* 3671 * ZDB does not typically re-read blocks; therefore limit the ARC 3672 * to 256 MB, which can be used entirely for metadata. 3673 */ 3674 zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024; 3675 3676 /* 3677 * "zdb -c" uses checksum-verifying scrub i/os which are async reads. 3678 * "zdb -b" uses traversal prefetch which uses async reads. 3679 * For good performance, let several of them be active at once. 3680 */ 3681 zfs_vdev_async_read_max_active = 10; 3682 3683 kernel_init(FREAD); 3684 g_zfs = libzfs_init(); 3685 if (g_zfs == NULL) 3686 fatal("Fail to initialize zfs"); 3687 3688 if (dump_all) 3689 verbose = MAX(verbose, 1); 3690 3691 for (c = 0; c < 256; c++) { 3692 if (dump_all && !strchr("elAFLRSXP", c)) 3693 dump_opt[c] = 1; 3694 if (dump_opt[c]) 3695 dump_opt[c] += verbose; 3696 } 3697 3698 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2); 3699 zfs_recover = (dump_opt['A'] > 1); 3700 3701 argc -= optind; 3702 argv += optind; 3703 3704 if (argc < 2 && dump_opt['R']) 3705 usage(); 3706 if (argc < 1) { 3707 if (!dump_opt['e'] && dump_opt['C']) { 3708 dump_cachefile(spa_config_path); 3709 return (0); 3710 } 3711 usage(); 3712 } 3713 3714 if (dump_opt['l']) { 3715 dump_label(argv[0]); 3716 return (0); 3717 } 3718 3719 if (dump_opt['X'] || dump_opt['F']) 3720 rewind = ZPOOL_DO_REWIND | 3721 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0); 3722 3723 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 || 3724 nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 || 3725 nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0) 3726 fatal("internal error: %s", strerror(ENOMEM)); 3727 3728 error = 0; 3729 target = argv[0]; 3730 3731 if (dump_opt['e']) { 3732 nvlist_t *cfg = NULL; 3733 char *name = find_zpool(&target, &cfg, nsearch, searchdirs); 3734 3735 error = ENOENT; 3736 if (name) { 3737 if (dump_opt['C'] > 1) { 3738 (void) printf("\nConfiguration for import:\n"); 3739 dump_nvlist(cfg, 8); 3740 } 3741 if (nvlist_add_nvlist(cfg, 3742 ZPOOL_REWIND_POLICY, policy) != 0) { 3743 fatal("can't open '%s': %s", 3744 target, strerror(ENOMEM)); 3745 } 3746 if ((error = spa_import(name, cfg, NULL, 3747 ZFS_IMPORT_MISSING_LOG)) != 0) { 3748 error = spa_import(name, cfg, NULL, 3749 ZFS_IMPORT_VERBATIM); 3750 } 3751 } 3752 } 3753 3754 if (strpbrk(target, "/@") != NULL) { 3755 size_t targetlen; 3756 3757 target_is_spa = B_FALSE; 3758 /* 3759 * Remove any trailing slash. Later code would get confused 3760 * by it, but we want to allow it so that "pool/" can 3761 * indicate that we want to dump the topmost filesystem, 3762 * rather than the whole pool. 3763 */ 3764 targetlen = strlen(target); 3765 if (targetlen != 0 && target[targetlen - 1] == '/') 3766 target[targetlen - 1] = '\0'; 3767 } 3768 3769 if (error == 0) { 3770 if (target_is_spa || dump_opt['R']) { 3771 error = spa_open_rewind(target, &spa, FTAG, policy, 3772 NULL); 3773 if (error) { 3774 /* 3775 * If we're missing the log device then 3776 * try opening the pool after clearing the 3777 * log state. 3778 */ 3779 mutex_enter(&spa_namespace_lock); 3780 if ((spa = spa_lookup(target)) != NULL && 3781 spa->spa_log_state == SPA_LOG_MISSING) { 3782 spa->spa_log_state = SPA_LOG_CLEAR; 3783 error = 0; 3784 } 3785 mutex_exit(&spa_namespace_lock); 3786 3787 if (!error) { 3788 error = spa_open_rewind(target, &spa, 3789 FTAG, policy, NULL); 3790 } 3791 } 3792 } else { 3793 error = dmu_objset_own(target, DMU_OST_ANY, 3794 B_TRUE, FTAG, &os); 3795 } 3796 } 3797 nvlist_free(policy); 3798 3799 if (error) 3800 fatal("can't open '%s': %s", target, strerror(error)); 3801 3802 argv++; 3803 argc--; 3804 if (!dump_opt['R']) { 3805 if (argc > 0) { 3806 zopt_objects = argc; 3807 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 3808 for (i = 0; i < zopt_objects; i++) { 3809 errno = 0; 3810 zopt_object[i] = strtoull(argv[i], NULL, 0); 3811 if (zopt_object[i] == 0 && errno != 0) 3812 fatal("bad number %s: %s", 3813 argv[i], strerror(errno)); 3814 } 3815 } 3816 if (os != NULL) { 3817 dump_dir(os); 3818 } else if (zopt_objects > 0 && !dump_opt['m']) { 3819 dump_dir(spa->spa_meta_objset); 3820 } else { 3821 dump_zpool(spa); 3822 } 3823 } else { 3824 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 3825 flagbits['c'] = ZDB_FLAG_CHECKSUM; 3826 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 3827 flagbits['e'] = ZDB_FLAG_BSWAP; 3828 flagbits['g'] = ZDB_FLAG_GBH; 3829 flagbits['i'] = ZDB_FLAG_INDIRECT; 3830 flagbits['p'] = ZDB_FLAG_PHYS; 3831 flagbits['r'] = ZDB_FLAG_RAW; 3832 3833 for (i = 0; i < argc; i++) 3834 zdb_read_block(argv[i], spa); 3835 } 3836 3837 (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG); 3838 3839 fuid_table_destroy(); 3840 sa_loaded = B_FALSE; 3841 3842 dump_debug_buffer(); 3843 3844 libzfs_fini(g_zfs); 3845 kernel_fini(); 3846 3847 return (0); 3848} 3849