zdb.c revision 307281
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 error = zfs_obj_to_path(os, object, path, sizeof (path)); 1723 if (error != 0) { 1724 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>", 1725 (u_longlong_t)object); 1726 } 1727 if (dump_opt['d'] < 3) { 1728 (void) printf("\t%s\n", path); 1729 (void) sa_handle_destroy(hdl); 1730 return; 1731 } 1732 1733 z_crtime = (time_t)crtm[0]; 1734 z_atime = (time_t)acctm[0]; 1735 z_mtime = (time_t)modtm[0]; 1736 z_ctime = (time_t)chgtm[0]; 1737 1738 (void) printf("\tpath %s\n", path); 1739 dump_uidgid(os, uid, gid); 1740 (void) printf("\tatime %s", ctime(&z_atime)); 1741 (void) printf("\tmtime %s", ctime(&z_mtime)); 1742 (void) printf("\tctime %s", ctime(&z_ctime)); 1743 (void) printf("\tcrtime %s", ctime(&z_crtime)); 1744 (void) printf("\tgen %llu\n", (u_longlong_t)gen); 1745 (void) printf("\tmode %llo\n", (u_longlong_t)mode); 1746 (void) printf("\tsize %llu\n", (u_longlong_t)fsize); 1747 (void) printf("\tparent %llu\n", (u_longlong_t)parent); 1748 (void) printf("\tlinks %llu\n", (u_longlong_t)links); 1749 (void) printf("\tpflags %llx\n", (u_longlong_t)pflags); 1750 if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr, 1751 sizeof (uint64_t)) == 0) 1752 (void) printf("\txattr %llu\n", (u_longlong_t)xattr); 1753 if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev, 1754 sizeof (uint64_t)) == 0) 1755 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)rdev); 1756 sa_handle_destroy(hdl); 1757} 1758 1759/*ARGSUSED*/ 1760static void 1761dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 1762{ 1763} 1764 1765/*ARGSUSED*/ 1766static void 1767dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 1768{ 1769} 1770 1771static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = { 1772 dump_none, /* unallocated */ 1773 dump_zap, /* object directory */ 1774 dump_uint64, /* object array */ 1775 dump_none, /* packed nvlist */ 1776 dump_packed_nvlist, /* packed nvlist size */ 1777 dump_none, /* bpobj */ 1778 dump_bpobj, /* bpobj header */ 1779 dump_none, /* SPA space map header */ 1780 dump_none, /* SPA space map */ 1781 dump_none, /* ZIL intent log */ 1782 dump_dnode, /* DMU dnode */ 1783 dump_dmu_objset, /* DMU objset */ 1784 dump_dsl_dir, /* DSL directory */ 1785 dump_zap, /* DSL directory child map */ 1786 dump_zap, /* DSL dataset snap map */ 1787 dump_zap, /* DSL props */ 1788 dump_dsl_dataset, /* DSL dataset */ 1789 dump_znode, /* ZFS znode */ 1790 dump_acl, /* ZFS V0 ACL */ 1791 dump_uint8, /* ZFS plain file */ 1792 dump_zpldir, /* ZFS directory */ 1793 dump_zap, /* ZFS master node */ 1794 dump_zap, /* ZFS delete queue */ 1795 dump_uint8, /* zvol object */ 1796 dump_zap, /* zvol prop */ 1797 dump_uint8, /* other uint8[] */ 1798 dump_uint64, /* other uint64[] */ 1799 dump_zap, /* other ZAP */ 1800 dump_zap, /* persistent error log */ 1801 dump_uint8, /* SPA history */ 1802 dump_history_offsets, /* SPA history offsets */ 1803 dump_zap, /* Pool properties */ 1804 dump_zap, /* DSL permissions */ 1805 dump_acl, /* ZFS ACL */ 1806 dump_uint8, /* ZFS SYSACL */ 1807 dump_none, /* FUID nvlist */ 1808 dump_packed_nvlist, /* FUID nvlist size */ 1809 dump_zap, /* DSL dataset next clones */ 1810 dump_zap, /* DSL scrub queue */ 1811 dump_zap, /* ZFS user/group used */ 1812 dump_zap, /* ZFS user/group quota */ 1813 dump_zap, /* snapshot refcount tags */ 1814 dump_ddt_zap, /* DDT ZAP object */ 1815 dump_zap, /* DDT statistics */ 1816 dump_znode, /* SA object */ 1817 dump_zap, /* SA Master Node */ 1818 dump_sa_attrs, /* SA attribute registration */ 1819 dump_sa_layouts, /* SA attribute layouts */ 1820 dump_zap, /* DSL scrub translations */ 1821 dump_none, /* fake dedup BP */ 1822 dump_zap, /* deadlist */ 1823 dump_none, /* deadlist hdr */ 1824 dump_zap, /* dsl clones */ 1825 dump_bpobj_subobjs, /* bpobj subobjs */ 1826 dump_unknown, /* Unknown type, must be last */ 1827}; 1828 1829static void 1830dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 1831{ 1832 dmu_buf_t *db = NULL; 1833 dmu_object_info_t doi; 1834 dnode_t *dn; 1835 void *bonus = NULL; 1836 size_t bsize = 0; 1837 char iblk[32], dblk[32], lsize[32], asize[32], fill[32]; 1838 char bonus_size[32]; 1839 char aux[50]; 1840 int error; 1841 1842 if (*print_header) { 1843 (void) printf("\n%10s %3s %5s %5s %5s %5s %6s %s\n", 1844 "Object", "lvl", "iblk", "dblk", "dsize", "lsize", 1845 "%full", "type"); 1846 *print_header = 0; 1847 } 1848 1849 if (object == 0) { 1850 dn = DMU_META_DNODE(os); 1851 } else { 1852 error = dmu_bonus_hold(os, object, FTAG, &db); 1853 if (error) 1854 fatal("dmu_bonus_hold(%llu) failed, errno %u", 1855 object, error); 1856 bonus = db->db_data; 1857 bsize = db->db_size; 1858 dn = DB_DNODE((dmu_buf_impl_t *)db); 1859 } 1860 dmu_object_info_from_dnode(dn, &doi); 1861 1862 zdb_nicenum(doi.doi_metadata_block_size, iblk); 1863 zdb_nicenum(doi.doi_data_block_size, dblk); 1864 zdb_nicenum(doi.doi_max_offset, lsize); 1865 zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize); 1866 zdb_nicenum(doi.doi_bonus_size, bonus_size); 1867 (void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count * 1868 doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) / 1869 doi.doi_max_offset); 1870 1871 aux[0] = '\0'; 1872 1873 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) { 1874 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 1875 ZDB_CHECKSUM_NAME(doi.doi_checksum)); 1876 } 1877 1878 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) { 1879 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 1880 ZDB_COMPRESS_NAME(doi.doi_compress)); 1881 } 1882 1883 (void) printf("%10lld %3u %5s %5s %5s %5s %6s %s%s\n", 1884 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, 1885 asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux); 1886 1887 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 1888 (void) printf("%10s %3s %5s %5s %5s %5s %6s %s\n", 1889 "", "", "", "", "", bonus_size, "bonus", 1890 ZDB_OT_NAME(doi.doi_bonus_type)); 1891 } 1892 1893 if (verbosity >= 4) { 1894 (void) printf("\tdnode flags: %s%s%s\n", 1895 (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ? 1896 "USED_BYTES " : "", 1897 (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ? 1898 "USERUSED_ACCOUNTED " : "", 1899 (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ? 1900 "SPILL_BLKPTR" : ""); 1901 (void) printf("\tdnode maxblkid: %llu\n", 1902 (longlong_t)dn->dn_phys->dn_maxblkid); 1903 1904 object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object, 1905 bonus, bsize); 1906 object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0); 1907 *print_header = 1; 1908 } 1909 1910 if (verbosity >= 5) 1911 dump_indirect(dn); 1912 1913 if (verbosity >= 5) { 1914 /* 1915 * Report the list of segments that comprise the object. 1916 */ 1917 uint64_t start = 0; 1918 uint64_t end; 1919 uint64_t blkfill = 1; 1920 int minlvl = 1; 1921 1922 if (dn->dn_type == DMU_OT_DNODE) { 1923 minlvl = 0; 1924 blkfill = DNODES_PER_BLOCK; 1925 } 1926 1927 for (;;) { 1928 char segsize[32]; 1929 error = dnode_next_offset(dn, 1930 0, &start, minlvl, blkfill, 0); 1931 if (error) 1932 break; 1933 end = start; 1934 error = dnode_next_offset(dn, 1935 DNODE_FIND_HOLE, &end, minlvl, blkfill, 0); 1936 zdb_nicenum(end - start, segsize); 1937 (void) printf("\t\tsegment [%016llx, %016llx)" 1938 " size %5s\n", (u_longlong_t)start, 1939 (u_longlong_t)end, segsize); 1940 if (error) 1941 break; 1942 start = end; 1943 } 1944 } 1945 1946 if (db != NULL) 1947 dmu_buf_rele(db, FTAG); 1948} 1949 1950static char *objset_types[DMU_OST_NUMTYPES] = { 1951 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1952 1953static void 1954dump_dir(objset_t *os) 1955{ 1956 dmu_objset_stats_t dds; 1957 uint64_t object, object_count; 1958 uint64_t refdbytes, usedobjs, scratch; 1959 char numbuf[32]; 1960 char blkbuf[BP_SPRINTF_LEN + 20]; 1961 char osname[ZFS_MAX_DATASET_NAME_LEN]; 1962 char *type = "UNKNOWN"; 1963 int verbosity = dump_opt['d']; 1964 int print_header = 1; 1965 int i, error; 1966 1967 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 1968 dmu_objset_fast_stat(os, &dds); 1969 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 1970 1971 if (dds.dds_type < DMU_OST_NUMTYPES) 1972 type = objset_types[dds.dds_type]; 1973 1974 if (dds.dds_type == DMU_OST_META) { 1975 dds.dds_creation_txg = TXG_INITIAL; 1976 usedobjs = BP_GET_FILL(os->os_rootbp); 1977 refdbytes = dsl_dir_phys(os->os_spa->spa_dsl_pool->dp_mos_dir)-> 1978 dd_used_bytes; 1979 } else { 1980 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch); 1981 } 1982 1983 ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp)); 1984 1985 zdb_nicenum(refdbytes, numbuf); 1986 1987 if (verbosity >= 4) { 1988 (void) snprintf(blkbuf, sizeof (blkbuf), ", rootbp "); 1989 (void) snprintf_blkptr(blkbuf + strlen(blkbuf), 1990 sizeof (blkbuf) - strlen(blkbuf), os->os_rootbp); 1991 } else { 1992 blkbuf[0] = '\0'; 1993 } 1994 1995 dmu_objset_name(os, osname); 1996 1997 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, " 1998 "%s, %llu objects%s\n", 1999 osname, type, (u_longlong_t)dmu_objset_id(os), 2000 (u_longlong_t)dds.dds_creation_txg, 2001 numbuf, (u_longlong_t)usedobjs, blkbuf); 2002 2003 if (zopt_objects != 0) { 2004 for (i = 0; i < zopt_objects; i++) 2005 dump_object(os, zopt_object[i], verbosity, 2006 &print_header); 2007 (void) printf("\n"); 2008 return; 2009 } 2010 2011 if (dump_opt['i'] != 0 || verbosity >= 2) 2012 dump_intent_log(dmu_objset_zil(os)); 2013 2014 if (dmu_objset_ds(os) != NULL) 2015 dump_deadlist(&dmu_objset_ds(os)->ds_deadlist); 2016 2017 if (verbosity < 2) 2018 return; 2019 2020 if (BP_IS_HOLE(os->os_rootbp)) 2021 return; 2022 2023 dump_object(os, 0, verbosity, &print_header); 2024 object_count = 0; 2025 if (DMU_USERUSED_DNODE(os) != NULL && 2026 DMU_USERUSED_DNODE(os)->dn_type != 0) { 2027 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header); 2028 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header); 2029 } 2030 2031 object = 0; 2032 while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) { 2033 dump_object(os, object, verbosity, &print_header); 2034 object_count++; 2035 } 2036 2037 ASSERT3U(object_count, ==, usedobjs); 2038 2039 (void) printf("\n"); 2040 2041 if (error != ESRCH) { 2042 (void) fprintf(stderr, "dmu_object_next() = %d\n", error); 2043 abort(); 2044 } 2045} 2046 2047static void 2048dump_uberblock(uberblock_t *ub, const char *header, const char *footer) 2049{ 2050 time_t timestamp = ub->ub_timestamp; 2051 2052 (void) printf(header ? header : ""); 2053 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 2054 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 2055 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 2056 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 2057 (void) printf("\ttimestamp = %llu UTC = %s", 2058 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 2059 if (dump_opt['u'] >= 3) { 2060 char blkbuf[BP_SPRINTF_LEN]; 2061 snprintf_blkptr(blkbuf, sizeof (blkbuf), &ub->ub_rootbp); 2062 (void) printf("\trootbp = %s\n", blkbuf); 2063 } 2064 (void) printf(footer ? footer : ""); 2065} 2066 2067static void 2068dump_config(spa_t *spa) 2069{ 2070 dmu_buf_t *db; 2071 size_t nvsize = 0; 2072 int error = 0; 2073 2074 2075 error = dmu_bonus_hold(spa->spa_meta_objset, 2076 spa->spa_config_object, FTAG, &db); 2077 2078 if (error == 0) { 2079 nvsize = *(uint64_t *)db->db_data; 2080 dmu_buf_rele(db, FTAG); 2081 2082 (void) printf("\nMOS Configuration:\n"); 2083 dump_packed_nvlist(spa->spa_meta_objset, 2084 spa->spa_config_object, (void *)&nvsize, 1); 2085 } else { 2086 (void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d", 2087 (u_longlong_t)spa->spa_config_object, error); 2088 } 2089} 2090 2091static void 2092dump_cachefile(const char *cachefile) 2093{ 2094 int fd; 2095 struct stat64 statbuf; 2096 char *buf; 2097 nvlist_t *config; 2098 2099 if ((fd = open64(cachefile, O_RDONLY)) < 0) { 2100 (void) printf("cannot open '%s': %s\n", cachefile, 2101 strerror(errno)); 2102 exit(1); 2103 } 2104 2105 if (fstat64(fd, &statbuf) != 0) { 2106 (void) printf("failed to stat '%s': %s\n", cachefile, 2107 strerror(errno)); 2108 exit(1); 2109 } 2110 2111 if ((buf = malloc(statbuf.st_size)) == NULL) { 2112 (void) fprintf(stderr, "failed to allocate %llu bytes\n", 2113 (u_longlong_t)statbuf.st_size); 2114 exit(1); 2115 } 2116 2117 if (read(fd, buf, statbuf.st_size) != statbuf.st_size) { 2118 (void) fprintf(stderr, "failed to read %llu bytes\n", 2119 (u_longlong_t)statbuf.st_size); 2120 exit(1); 2121 } 2122 2123 (void) close(fd); 2124 2125 if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) { 2126 (void) fprintf(stderr, "failed to unpack nvlist\n"); 2127 exit(1); 2128 } 2129 2130 free(buf); 2131 2132 dump_nvlist(config, 0); 2133 2134 nvlist_free(config); 2135} 2136 2137#define ZDB_MAX_UB_HEADER_SIZE 32 2138 2139static void 2140dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift) 2141{ 2142 vdev_t vd; 2143 vdev_t *vdp = &vd; 2144 char header[ZDB_MAX_UB_HEADER_SIZE]; 2145 2146 vd.vdev_ashift = ashift; 2147 vdp->vdev_top = vdp; 2148 2149 for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) { 2150 uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i); 2151 uberblock_t *ub = (void *)((char *)lbl + uoff); 2152 2153 if (uberblock_verify(ub)) 2154 continue; 2155 (void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE, 2156 "Uberblock[%d]\n", i); 2157 dump_uberblock(ub, header, ""); 2158 } 2159} 2160 2161static void 2162dump_label(const char *dev) 2163{ 2164 int fd; 2165 vdev_label_t label; 2166 char *path, *buf = label.vl_vdev_phys.vp_nvlist; 2167 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 2168 struct stat64 statbuf; 2169 uint64_t psize, ashift; 2170 int len = strlen(dev) + 1; 2171 2172 if (strncmp(dev, ZFS_DISK_ROOTD, strlen(ZFS_DISK_ROOTD)) == 0) { 2173 len++; 2174 path = malloc(len); 2175 (void) snprintf(path, len, "%s%s", ZFS_RDISK_ROOTD, 2176 dev + strlen(ZFS_DISK_ROOTD)); 2177 } else { 2178 path = strdup(dev); 2179 } 2180 2181 if ((fd = open64(path, O_RDONLY)) < 0) { 2182 (void) printf("cannot open '%s': %s\n", path, strerror(errno)); 2183 free(path); 2184 exit(1); 2185 } 2186 2187 if (fstat64(fd, &statbuf) != 0) { 2188 (void) printf("failed to stat '%s': %s\n", path, 2189 strerror(errno)); 2190 free(path); 2191 (void) close(fd); 2192 exit(1); 2193 } 2194 2195 if (S_ISBLK(statbuf.st_mode)) { 2196 (void) printf("cannot use '%s': character device required\n", 2197 path); 2198 free(path); 2199 (void) close(fd); 2200 exit(1); 2201 } 2202 2203 psize = statbuf.st_size; 2204 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 2205 2206 for (int l = 0; l < VDEV_LABELS; l++) { 2207 nvlist_t *config = NULL; 2208 2209 (void) printf("--------------------------------------------\n"); 2210 (void) printf("LABEL %d\n", l); 2211 (void) printf("--------------------------------------------\n"); 2212 2213 if (pread64(fd, &label, sizeof (label), 2214 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 2215 (void) printf("failed to read label %d\n", l); 2216 continue; 2217 } 2218 2219 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 2220 (void) printf("failed to unpack label %d\n", l); 2221 ashift = SPA_MINBLOCKSHIFT; 2222 } else { 2223 nvlist_t *vdev_tree = NULL; 2224 2225 dump_nvlist(config, 4); 2226 if ((nvlist_lookup_nvlist(config, 2227 ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) || 2228 (nvlist_lookup_uint64(vdev_tree, 2229 ZPOOL_CONFIG_ASHIFT, &ashift) != 0)) 2230 ashift = SPA_MINBLOCKSHIFT; 2231 nvlist_free(config); 2232 } 2233 if (dump_opt['u']) 2234 dump_label_uberblocks(&label, ashift); 2235 } 2236 2237 free(path); 2238 (void) close(fd); 2239} 2240 2241static uint64_t dataset_feature_count[SPA_FEATURES]; 2242 2243/*ARGSUSED*/ 2244static int 2245dump_one_dir(const char *dsname, void *arg) 2246{ 2247 int error; 2248 objset_t *os; 2249 2250 error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os); 2251 if (error) { 2252 (void) printf("Could not open %s, error %d\n", dsname, error); 2253 return (0); 2254 } 2255 2256 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 2257 if (!dmu_objset_ds(os)->ds_feature_inuse[f]) 2258 continue; 2259 ASSERT(spa_feature_table[f].fi_flags & 2260 ZFEATURE_FLAG_PER_DATASET); 2261 dataset_feature_count[f]++; 2262 } 2263 2264 dump_dir(os); 2265 dmu_objset_disown(os, FTAG); 2266 fuid_table_destroy(); 2267 sa_loaded = B_FALSE; 2268 return (0); 2269} 2270 2271/* 2272 * Block statistics. 2273 */ 2274#define PSIZE_HISTO_SIZE (SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 2) 2275typedef struct zdb_blkstats { 2276 uint64_t zb_asize; 2277 uint64_t zb_lsize; 2278 uint64_t zb_psize; 2279 uint64_t zb_count; 2280 uint64_t zb_gangs; 2281 uint64_t zb_ditto_samevdev; 2282 uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE]; 2283} zdb_blkstats_t; 2284 2285/* 2286 * Extended object types to report deferred frees and dedup auto-ditto blocks. 2287 */ 2288#define ZDB_OT_DEFERRED (DMU_OT_NUMTYPES + 0) 2289#define ZDB_OT_DITTO (DMU_OT_NUMTYPES + 1) 2290#define ZDB_OT_OTHER (DMU_OT_NUMTYPES + 2) 2291#define ZDB_OT_TOTAL (DMU_OT_NUMTYPES + 3) 2292 2293static char *zdb_ot_extname[] = { 2294 "deferred free", 2295 "dedup ditto", 2296 "other", 2297 "Total", 2298}; 2299 2300#define ZB_TOTAL DN_MAX_LEVELS 2301 2302typedef struct zdb_cb { 2303 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1]; 2304 uint64_t zcb_dedup_asize; 2305 uint64_t zcb_dedup_blocks; 2306 uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES]; 2307 uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES] 2308 [BPE_PAYLOAD_SIZE]; 2309 uint64_t zcb_start; 2310 uint64_t zcb_lastprint; 2311 uint64_t zcb_totalasize; 2312 uint64_t zcb_errors[256]; 2313 int zcb_readfails; 2314 int zcb_haderrors; 2315 spa_t *zcb_spa; 2316} zdb_cb_t; 2317 2318static void 2319zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp, 2320 dmu_object_type_t type) 2321{ 2322 uint64_t refcnt = 0; 2323 2324 ASSERT(type < ZDB_OT_TOTAL); 2325 2326 if (zilog && zil_bp_tree_add(zilog, bp) != 0) 2327 return; 2328 2329 for (int i = 0; i < 4; i++) { 2330 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 2331 int t = (i & 1) ? type : ZDB_OT_TOTAL; 2332 int equal; 2333 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 2334 2335 zb->zb_asize += BP_GET_ASIZE(bp); 2336 zb->zb_lsize += BP_GET_LSIZE(bp); 2337 zb->zb_psize += BP_GET_PSIZE(bp); 2338 zb->zb_count++; 2339 2340 /* 2341 * The histogram is only big enough to record blocks up to 2342 * SPA_OLD_MAXBLOCKSIZE; larger blocks go into the last, 2343 * "other", bucket. 2344 */ 2345 int idx = BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT; 2346 idx = MIN(idx, SPA_OLD_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1); 2347 zb->zb_psize_histogram[idx]++; 2348 2349 zb->zb_gangs += BP_COUNT_GANG(bp); 2350 2351 switch (BP_GET_NDVAS(bp)) { 2352 case 2: 2353 if (DVA_GET_VDEV(&bp->blk_dva[0]) == 2354 DVA_GET_VDEV(&bp->blk_dva[1])) 2355 zb->zb_ditto_samevdev++; 2356 break; 2357 case 3: 2358 equal = (DVA_GET_VDEV(&bp->blk_dva[0]) == 2359 DVA_GET_VDEV(&bp->blk_dva[1])) + 2360 (DVA_GET_VDEV(&bp->blk_dva[0]) == 2361 DVA_GET_VDEV(&bp->blk_dva[2])) + 2362 (DVA_GET_VDEV(&bp->blk_dva[1]) == 2363 DVA_GET_VDEV(&bp->blk_dva[2])); 2364 if (equal != 0) 2365 zb->zb_ditto_samevdev++; 2366 break; 2367 } 2368 2369 } 2370 2371 if (BP_IS_EMBEDDED(bp)) { 2372 zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++; 2373 zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)] 2374 [BPE_GET_PSIZE(bp)]++; 2375 return; 2376 } 2377 2378 if (dump_opt['L']) 2379 return; 2380 2381 if (BP_GET_DEDUP(bp)) { 2382 ddt_t *ddt; 2383 ddt_entry_t *dde; 2384 2385 ddt = ddt_select(zcb->zcb_spa, bp); 2386 ddt_enter(ddt); 2387 dde = ddt_lookup(ddt, bp, B_FALSE); 2388 2389 if (dde == NULL) { 2390 refcnt = 0; 2391 } else { 2392 ddt_phys_t *ddp = ddt_phys_select(dde, bp); 2393 ddt_phys_decref(ddp); 2394 refcnt = ddp->ddp_refcnt; 2395 if (ddt_phys_total_refcnt(dde) == 0) 2396 ddt_remove(ddt, dde); 2397 } 2398 ddt_exit(ddt); 2399 } 2400 2401 VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa, 2402 refcnt ? 0 : spa_first_txg(zcb->zcb_spa), 2403 bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0); 2404} 2405 2406/* ARGSUSED */ 2407static void 2408zdb_blkptr_done(zio_t *zio) 2409{ 2410 spa_t *spa = zio->io_spa; 2411 blkptr_t *bp = zio->io_bp; 2412 int ioerr = zio->io_error; 2413 zdb_cb_t *zcb = zio->io_private; 2414 zbookmark_phys_t *zb = &zio->io_bookmark; 2415 2416 zio_data_buf_free(zio->io_data, zio->io_size); 2417 2418 mutex_enter(&spa->spa_scrub_lock); 2419 spa->spa_scrub_inflight--; 2420 cv_broadcast(&spa->spa_scrub_io_cv); 2421 2422 if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { 2423 char blkbuf[BP_SPRINTF_LEN]; 2424 2425 zcb->zcb_haderrors = 1; 2426 zcb->zcb_errors[ioerr]++; 2427 2428 if (dump_opt['b'] >= 2) 2429 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2430 else 2431 blkbuf[0] = '\0'; 2432 2433 (void) printf("zdb_blkptr_cb: " 2434 "Got error %d reading " 2435 "<%llu, %llu, %lld, %llx> %s -- skipping\n", 2436 ioerr, 2437 (u_longlong_t)zb->zb_objset, 2438 (u_longlong_t)zb->zb_object, 2439 (u_longlong_t)zb->zb_level, 2440 (u_longlong_t)zb->zb_blkid, 2441 blkbuf); 2442 } 2443 mutex_exit(&spa->spa_scrub_lock); 2444} 2445 2446/* ARGSUSED */ 2447static int 2448zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2449 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 2450{ 2451 zdb_cb_t *zcb = arg; 2452 dmu_object_type_t type; 2453 boolean_t is_metadata; 2454 2455 if (bp == NULL) 2456 return (0); 2457 2458 if (dump_opt['b'] >= 5 && bp->blk_birth > 0) { 2459 char blkbuf[BP_SPRINTF_LEN]; 2460 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2461 (void) printf("objset %llu object %llu " 2462 "level %lld offset 0x%llx %s\n", 2463 (u_longlong_t)zb->zb_objset, 2464 (u_longlong_t)zb->zb_object, 2465 (longlong_t)zb->zb_level, 2466 (u_longlong_t)blkid2offset(dnp, bp, zb), 2467 blkbuf); 2468 } 2469 2470 if (BP_IS_HOLE(bp)) 2471 return (0); 2472 2473 type = BP_GET_TYPE(bp); 2474 2475 zdb_count_block(zcb, zilog, bp, 2476 (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type); 2477 2478 is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)); 2479 2480 if (!BP_IS_EMBEDDED(bp) && 2481 (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) { 2482 size_t size = BP_GET_PSIZE(bp); 2483 void *data = zio_data_buf_alloc(size); 2484 int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW; 2485 2486 /* If it's an intent log block, failure is expected. */ 2487 if (zb->zb_level == ZB_ZIL_LEVEL) 2488 flags |= ZIO_FLAG_SPECULATIVE; 2489 2490 mutex_enter(&spa->spa_scrub_lock); 2491 while (spa->spa_scrub_inflight > max_inflight) 2492 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); 2493 spa->spa_scrub_inflight++; 2494 mutex_exit(&spa->spa_scrub_lock); 2495 2496 zio_nowait(zio_read(NULL, spa, bp, data, size, 2497 zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb)); 2498 } 2499 2500 zcb->zcb_readfails = 0; 2501 2502 /* only call gethrtime() every 100 blocks */ 2503 static int iters; 2504 if (++iters > 100) 2505 iters = 0; 2506 else 2507 return (0); 2508 2509 if (dump_opt['b'] < 5 && gethrtime() > zcb->zcb_lastprint + NANOSEC) { 2510 uint64_t now = gethrtime(); 2511 char buf[10]; 2512 uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize; 2513 int kb_per_sec = 2514 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000)); 2515 int sec_remaining = 2516 (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec; 2517 2518 zfs_nicenum(bytes, buf, sizeof (buf)); 2519 (void) fprintf(stderr, 2520 "\r%5s completed (%4dMB/s) " 2521 "estimated time remaining: %uhr %02umin %02usec ", 2522 buf, kb_per_sec / 1024, 2523 sec_remaining / 60 / 60, 2524 sec_remaining / 60 % 60, 2525 sec_remaining % 60); 2526 2527 zcb->zcb_lastprint = now; 2528 } 2529 2530 return (0); 2531} 2532 2533static void 2534zdb_leak(void *arg, uint64_t start, uint64_t size) 2535{ 2536 vdev_t *vd = arg; 2537 2538 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 2539 (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size); 2540} 2541 2542static metaslab_ops_t zdb_metaslab_ops = { 2543 NULL /* alloc */ 2544}; 2545 2546static void 2547zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb) 2548{ 2549 ddt_bookmark_t ddb = { 0 }; 2550 ddt_entry_t dde; 2551 int error; 2552 2553 while ((error = ddt_walk(spa, &ddb, &dde)) == 0) { 2554 blkptr_t blk; 2555 ddt_phys_t *ddp = dde.dde_phys; 2556 2557 if (ddb.ddb_class == DDT_CLASS_UNIQUE) 2558 return; 2559 2560 ASSERT(ddt_phys_total_refcnt(&dde) > 1); 2561 2562 for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) { 2563 if (ddp->ddp_phys_birth == 0) 2564 continue; 2565 ddt_bp_create(ddb.ddb_checksum, 2566 &dde.dde_key, ddp, &blk); 2567 if (p == DDT_PHYS_DITTO) { 2568 zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO); 2569 } else { 2570 zcb->zcb_dedup_asize += 2571 BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1); 2572 zcb->zcb_dedup_blocks++; 2573 } 2574 } 2575 if (!dump_opt['L']) { 2576 ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum]; 2577 ddt_enter(ddt); 2578 VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL); 2579 ddt_exit(ddt); 2580 } 2581 } 2582 2583 ASSERT(error == ENOENT); 2584} 2585 2586static void 2587zdb_leak_init(spa_t *spa, zdb_cb_t *zcb) 2588{ 2589 zcb->zcb_spa = spa; 2590 2591 if (!dump_opt['L']) { 2592 vdev_t *rvd = spa->spa_root_vdev; 2593 for (uint64_t c = 0; c < rvd->vdev_children; c++) { 2594 vdev_t *vd = rvd->vdev_child[c]; 2595 for (uint64_t m = 0; m < vd->vdev_ms_count; m++) { 2596 metaslab_t *msp = vd->vdev_ms[m]; 2597 mutex_enter(&msp->ms_lock); 2598 metaslab_unload(msp); 2599 2600 /* 2601 * For leak detection, we overload the metaslab 2602 * ms_tree to contain allocated segments 2603 * instead of free segments. As a result, 2604 * we can't use the normal metaslab_load/unload 2605 * interfaces. 2606 */ 2607 if (msp->ms_sm != NULL) { 2608 (void) fprintf(stderr, 2609 "\rloading space map for " 2610 "vdev %llu of %llu, " 2611 "metaslab %llu of %llu ...", 2612 (longlong_t)c, 2613 (longlong_t)rvd->vdev_children, 2614 (longlong_t)m, 2615 (longlong_t)vd->vdev_ms_count); 2616 2617 msp->ms_ops = &zdb_metaslab_ops; 2618 2619 /* 2620 * We don't want to spend the CPU 2621 * manipulating the size-ordered 2622 * tree, so clear the range_tree 2623 * ops. 2624 */ 2625 msp->ms_tree->rt_ops = NULL; 2626 VERIFY0(space_map_load(msp->ms_sm, 2627 msp->ms_tree, SM_ALLOC)); 2628 msp->ms_loaded = B_TRUE; 2629 } 2630 mutex_exit(&msp->ms_lock); 2631 } 2632 } 2633 (void) fprintf(stderr, "\n"); 2634 } 2635 2636 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2637 2638 zdb_ddt_leak_init(spa, zcb); 2639 2640 spa_config_exit(spa, SCL_CONFIG, FTAG); 2641} 2642 2643static void 2644zdb_leak_fini(spa_t *spa) 2645{ 2646 if (!dump_opt['L']) { 2647 vdev_t *rvd = spa->spa_root_vdev; 2648 for (int c = 0; c < rvd->vdev_children; c++) { 2649 vdev_t *vd = rvd->vdev_child[c]; 2650 for (int m = 0; m < vd->vdev_ms_count; m++) { 2651 metaslab_t *msp = vd->vdev_ms[m]; 2652 mutex_enter(&msp->ms_lock); 2653 2654 /* 2655 * The ms_tree has been overloaded to 2656 * contain allocated segments. Now that we 2657 * finished traversing all blocks, any 2658 * block that remains in the ms_tree 2659 * represents an allocated block that we 2660 * did not claim during the traversal. 2661 * Claimed blocks would have been removed 2662 * from the ms_tree. 2663 */ 2664 range_tree_vacate(msp->ms_tree, zdb_leak, vd); 2665 msp->ms_loaded = B_FALSE; 2666 2667 mutex_exit(&msp->ms_lock); 2668 } 2669 } 2670 } 2671} 2672 2673/* ARGSUSED */ 2674static int 2675count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 2676{ 2677 zdb_cb_t *zcb = arg; 2678 2679 if (dump_opt['b'] >= 5) { 2680 char blkbuf[BP_SPRINTF_LEN]; 2681 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 2682 (void) printf("[%s] %s\n", 2683 "deferred free", blkbuf); 2684 } 2685 zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED); 2686 return (0); 2687} 2688 2689static int 2690dump_block_stats(spa_t *spa) 2691{ 2692 zdb_cb_t zcb = { 0 }; 2693 zdb_blkstats_t *zb, *tzb; 2694 uint64_t norm_alloc, norm_space, total_alloc, total_found; 2695 int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD; 2696 boolean_t leaks = B_FALSE; 2697 2698 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n", 2699 (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "", 2700 (dump_opt['c'] == 1) ? "metadata " : "", 2701 dump_opt['c'] ? "checksums " : "", 2702 (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "", 2703 !dump_opt['L'] ? "nothing leaked " : ""); 2704 2705 /* 2706 * Load all space maps as SM_ALLOC maps, then traverse the pool 2707 * claiming each block we discover. If the pool is perfectly 2708 * consistent, the space maps will be empty when we're done. 2709 * Anything left over is a leak; any block we can't claim (because 2710 * it's not part of any space map) is a double allocation, 2711 * reference to a freed block, or an unclaimed log block. 2712 */ 2713 zdb_leak_init(spa, &zcb); 2714 2715 /* 2716 * If there's a deferred-free bplist, process that first. 2717 */ 2718 (void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj, 2719 count_block_cb, &zcb, NULL); 2720 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 2721 (void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj, 2722 count_block_cb, &zcb, NULL); 2723 } 2724 if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) { 2725 VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset, 2726 spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb, 2727 &zcb, NULL)); 2728 } 2729 2730 if (dump_opt['c'] > 1) 2731 flags |= TRAVERSE_PREFETCH_DATA; 2732 2733 zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa)); 2734 zcb.zcb_start = zcb.zcb_lastprint = gethrtime(); 2735 zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb); 2736 2737 /* 2738 * If we've traversed the data blocks then we need to wait for those 2739 * I/Os to complete. We leverage "The Godfather" zio to wait on 2740 * all async I/Os to complete. 2741 */ 2742 if (dump_opt['c']) { 2743 for (int i = 0; i < max_ncpus; i++) { 2744 (void) zio_wait(spa->spa_async_zio_root[i]); 2745 spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, 2746 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | 2747 ZIO_FLAG_GODFATHER); 2748 } 2749 } 2750 2751 if (zcb.zcb_haderrors) { 2752 (void) printf("\nError counts:\n\n"); 2753 (void) printf("\t%5s %s\n", "errno", "count"); 2754 for (int e = 0; e < 256; e++) { 2755 if (zcb.zcb_errors[e] != 0) { 2756 (void) printf("\t%5d %llu\n", 2757 e, (u_longlong_t)zcb.zcb_errors[e]); 2758 } 2759 } 2760 } 2761 2762 /* 2763 * Report any leaked segments. 2764 */ 2765 zdb_leak_fini(spa); 2766 2767 tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL]; 2768 2769 norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 2770 norm_space = metaslab_class_get_space(spa_normal_class(spa)); 2771 2772 total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa)); 2773 total_found = tzb->zb_asize - zcb.zcb_dedup_asize; 2774 2775 if (total_found == total_alloc) { 2776 if (!dump_opt['L']) 2777 (void) printf("\n\tNo leaks (block sum matches space" 2778 " maps exactly)\n"); 2779 } else { 2780 (void) printf("block traversal size %llu != alloc %llu " 2781 "(%s %lld)\n", 2782 (u_longlong_t)total_found, 2783 (u_longlong_t)total_alloc, 2784 (dump_opt['L']) ? "unreachable" : "leaked", 2785 (longlong_t)(total_alloc - total_found)); 2786 leaks = B_TRUE; 2787 } 2788 2789 if (tzb->zb_count == 0) 2790 return (2); 2791 2792 (void) printf("\n"); 2793 (void) printf("\tbp count: %10llu\n", 2794 (u_longlong_t)tzb->zb_count); 2795 (void) printf("\tganged count: %10llu\n", 2796 (longlong_t)tzb->zb_gangs); 2797 (void) printf("\tbp logical: %10llu avg: %6llu\n", 2798 (u_longlong_t)tzb->zb_lsize, 2799 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 2800 (void) printf("\tbp physical: %10llu avg:" 2801 " %6llu compression: %6.2f\n", 2802 (u_longlong_t)tzb->zb_psize, 2803 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 2804 (double)tzb->zb_lsize / tzb->zb_psize); 2805 (void) printf("\tbp allocated: %10llu avg:" 2806 " %6llu compression: %6.2f\n", 2807 (u_longlong_t)tzb->zb_asize, 2808 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 2809 (double)tzb->zb_lsize / tzb->zb_asize); 2810 (void) printf("\tbp deduped: %10llu ref>1:" 2811 " %6llu deduplication: %6.2f\n", 2812 (u_longlong_t)zcb.zcb_dedup_asize, 2813 (u_longlong_t)zcb.zcb_dedup_blocks, 2814 (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0); 2815 (void) printf("\tSPA allocated: %10llu used: %5.2f%%\n", 2816 (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space); 2817 2818 for (bp_embedded_type_t i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) { 2819 if (zcb.zcb_embedded_blocks[i] == 0) 2820 continue; 2821 (void) printf("\n"); 2822 (void) printf("\tadditional, non-pointer bps of type %u: " 2823 "%10llu\n", 2824 i, (u_longlong_t)zcb.zcb_embedded_blocks[i]); 2825 2826 if (dump_opt['b'] >= 3) { 2827 (void) printf("\t number of (compressed) bytes: " 2828 "number of bps\n"); 2829 dump_histogram(zcb.zcb_embedded_histogram[i], 2830 sizeof (zcb.zcb_embedded_histogram[i]) / 2831 sizeof (zcb.zcb_embedded_histogram[i][0]), 0); 2832 } 2833 } 2834 2835 if (tzb->zb_ditto_samevdev != 0) { 2836 (void) printf("\tDittoed blocks on same vdev: %llu\n", 2837 (longlong_t)tzb->zb_ditto_samevdev); 2838 } 2839 2840 if (dump_opt['b'] >= 2) { 2841 int l, t, level; 2842 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 2843 "\t avg\t comp\t%%Total\tType\n"); 2844 2845 for (t = 0; t <= ZDB_OT_TOTAL; t++) { 2846 char csize[32], lsize[32], psize[32], asize[32]; 2847 char avg[32], gang[32]; 2848 char *typename; 2849 2850 if (t < DMU_OT_NUMTYPES) 2851 typename = dmu_ot[t].ot_name; 2852 else 2853 typename = zdb_ot_extname[t - DMU_OT_NUMTYPES]; 2854 2855 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 2856 (void) printf("%6s\t%5s\t%5s\t%5s" 2857 "\t%5s\t%5s\t%6s\t%s\n", 2858 "-", 2859 "-", 2860 "-", 2861 "-", 2862 "-", 2863 "-", 2864 "-", 2865 typename); 2866 continue; 2867 } 2868 2869 for (l = ZB_TOTAL - 1; l >= -1; l--) { 2870 level = (l == -1 ? ZB_TOTAL : l); 2871 zb = &zcb.zcb_type[level][t]; 2872 2873 if (zb->zb_asize == 0) 2874 continue; 2875 2876 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 2877 continue; 2878 2879 if (level == 0 && zb->zb_asize == 2880 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 2881 continue; 2882 2883 zdb_nicenum(zb->zb_count, csize); 2884 zdb_nicenum(zb->zb_lsize, lsize); 2885 zdb_nicenum(zb->zb_psize, psize); 2886 zdb_nicenum(zb->zb_asize, asize); 2887 zdb_nicenum(zb->zb_asize / zb->zb_count, avg); 2888 zdb_nicenum(zb->zb_gangs, gang); 2889 2890 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 2891 "\t%5.2f\t%6.2f\t", 2892 csize, lsize, psize, asize, avg, 2893 (double)zb->zb_lsize / zb->zb_psize, 2894 100.0 * zb->zb_asize / tzb->zb_asize); 2895 2896 if (level == ZB_TOTAL) 2897 (void) printf("%s\n", typename); 2898 else 2899 (void) printf(" L%d %s\n", 2900 level, typename); 2901 2902 if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) { 2903 (void) printf("\t number of ganged " 2904 "blocks: %s\n", gang); 2905 } 2906 2907 if (dump_opt['b'] >= 4) { 2908 (void) printf("psize " 2909 "(in 512-byte sectors): " 2910 "number of blocks\n"); 2911 dump_histogram(zb->zb_psize_histogram, 2912 PSIZE_HISTO_SIZE, 0); 2913 } 2914 } 2915 } 2916 } 2917 2918 (void) printf("\n"); 2919 2920 if (leaks) 2921 return (2); 2922 2923 if (zcb.zcb_haderrors) 2924 return (3); 2925 2926 return (0); 2927} 2928 2929typedef struct zdb_ddt_entry { 2930 ddt_key_t zdde_key; 2931 uint64_t zdde_ref_blocks; 2932 uint64_t zdde_ref_lsize; 2933 uint64_t zdde_ref_psize; 2934 uint64_t zdde_ref_dsize; 2935 avl_node_t zdde_node; 2936} zdb_ddt_entry_t; 2937 2938/* ARGSUSED */ 2939static int 2940zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 2941 const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 2942{ 2943 avl_tree_t *t = arg; 2944 avl_index_t where; 2945 zdb_ddt_entry_t *zdde, zdde_search; 2946 2947 if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp)) 2948 return (0); 2949 2950 if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) { 2951 (void) printf("traversing objset %llu, %llu objects, " 2952 "%lu blocks so far\n", 2953 (u_longlong_t)zb->zb_objset, 2954 (u_longlong_t)BP_GET_FILL(bp), 2955 avl_numnodes(t)); 2956 } 2957 2958 if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF || 2959 BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) 2960 return (0); 2961 2962 ddt_key_fill(&zdde_search.zdde_key, bp); 2963 2964 zdde = avl_find(t, &zdde_search, &where); 2965 2966 if (zdde == NULL) { 2967 zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL); 2968 zdde->zdde_key = zdde_search.zdde_key; 2969 avl_insert(t, zdde, where); 2970 } 2971 2972 zdde->zdde_ref_blocks += 1; 2973 zdde->zdde_ref_lsize += BP_GET_LSIZE(bp); 2974 zdde->zdde_ref_psize += BP_GET_PSIZE(bp); 2975 zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp); 2976 2977 return (0); 2978} 2979 2980static void 2981dump_simulated_ddt(spa_t *spa) 2982{ 2983 avl_tree_t t; 2984 void *cookie = NULL; 2985 zdb_ddt_entry_t *zdde; 2986 ddt_histogram_t ddh_total = { 0 }; 2987 ddt_stat_t dds_total = { 0 }; 2988 2989 avl_create(&t, ddt_entry_compare, 2990 sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node)); 2991 2992 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 2993 2994 (void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA, 2995 zdb_ddt_add_cb, &t); 2996 2997 spa_config_exit(spa, SCL_CONFIG, FTAG); 2998 2999 while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) { 3000 ddt_stat_t dds; 3001 uint64_t refcnt = zdde->zdde_ref_blocks; 3002 ASSERT(refcnt != 0); 3003 3004 dds.dds_blocks = zdde->zdde_ref_blocks / refcnt; 3005 dds.dds_lsize = zdde->zdde_ref_lsize / refcnt; 3006 dds.dds_psize = zdde->zdde_ref_psize / refcnt; 3007 dds.dds_dsize = zdde->zdde_ref_dsize / refcnt; 3008 3009 dds.dds_ref_blocks = zdde->zdde_ref_blocks; 3010 dds.dds_ref_lsize = zdde->zdde_ref_lsize; 3011 dds.dds_ref_psize = zdde->zdde_ref_psize; 3012 dds.dds_ref_dsize = zdde->zdde_ref_dsize; 3013 3014 ddt_stat_add(&ddh_total.ddh_stat[highbit64(refcnt) - 1], 3015 &dds, 0); 3016 3017 umem_free(zdde, sizeof (*zdde)); 3018 } 3019 3020 avl_destroy(&t); 3021 3022 ddt_histogram_stat(&dds_total, &ddh_total); 3023 3024 (void) printf("Simulated DDT histogram:\n"); 3025 3026 zpool_dump_ddt(&dds_total, &ddh_total); 3027 3028 dump_dedup_ratio(&dds_total); 3029} 3030 3031static void 3032dump_zpool(spa_t *spa) 3033{ 3034 dsl_pool_t *dp = spa_get_dsl(spa); 3035 int rc = 0; 3036 3037 if (dump_opt['S']) { 3038 dump_simulated_ddt(spa); 3039 return; 3040 } 3041 3042 if (!dump_opt['e'] && dump_opt['C'] > 1) { 3043 (void) printf("\nCached configuration:\n"); 3044 dump_nvlist(spa->spa_config, 8); 3045 } 3046 3047 if (dump_opt['C']) 3048 dump_config(spa); 3049 3050 if (dump_opt['u']) 3051 dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n"); 3052 3053 if (dump_opt['D']) 3054 dump_all_ddts(spa); 3055 3056 if (dump_opt['d'] > 2 || dump_opt['m']) 3057 dump_metaslabs(spa); 3058 if (dump_opt['M']) 3059 dump_metaslab_groups(spa); 3060 3061 if (dump_opt['d'] || dump_opt['i']) { 3062 dump_dir(dp->dp_meta_objset); 3063 if (dump_opt['d'] >= 3) { 3064 dump_full_bpobj(&spa->spa_deferred_bpobj, 3065 "Deferred frees", 0); 3066 if (spa_version(spa) >= SPA_VERSION_DEADLISTS) { 3067 dump_full_bpobj( 3068 &spa->spa_dsl_pool->dp_free_bpobj, 3069 "Pool snapshot frees", 0); 3070 } 3071 3072 if (spa_feature_is_active(spa, 3073 SPA_FEATURE_ASYNC_DESTROY)) { 3074 dump_bptree(spa->spa_meta_objset, 3075 spa->spa_dsl_pool->dp_bptree_obj, 3076 "Pool dataset frees"); 3077 } 3078 dump_dtl(spa->spa_root_vdev, 0); 3079 } 3080 (void) dmu_objset_find(spa_name(spa), dump_one_dir, 3081 NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 3082 3083 for (spa_feature_t f = 0; f < SPA_FEATURES; f++) { 3084 uint64_t refcount; 3085 3086 if (!(spa_feature_table[f].fi_flags & 3087 ZFEATURE_FLAG_PER_DATASET)) { 3088 ASSERT0(dataset_feature_count[f]); 3089 continue; 3090 } 3091 (void) feature_get_refcount(spa, 3092 &spa_feature_table[f], &refcount); 3093 if (dataset_feature_count[f] != refcount) { 3094 (void) printf("%s feature refcount mismatch: " 3095 "%lld datasets != %lld refcount\n", 3096 spa_feature_table[f].fi_uname, 3097 (longlong_t)dataset_feature_count[f], 3098 (longlong_t)refcount); 3099 rc = 2; 3100 } else { 3101 (void) printf("Verified %s feature refcount " 3102 "of %llu is correct\n", 3103 spa_feature_table[f].fi_uname, 3104 (longlong_t)refcount); 3105 } 3106 } 3107 } 3108 if (rc == 0 && (dump_opt['b'] || dump_opt['c'])) 3109 rc = dump_block_stats(spa); 3110 3111 if (rc == 0) 3112 rc = verify_spacemap_refcounts(spa); 3113 3114 if (dump_opt['s']) 3115 show_pool_stats(spa); 3116 3117 if (dump_opt['h']) 3118 dump_history(spa); 3119 3120 if (rc != 0) { 3121 dump_debug_buffer(); 3122 exit(rc); 3123 } 3124} 3125 3126#define ZDB_FLAG_CHECKSUM 0x0001 3127#define ZDB_FLAG_DECOMPRESS 0x0002 3128#define ZDB_FLAG_BSWAP 0x0004 3129#define ZDB_FLAG_GBH 0x0008 3130#define ZDB_FLAG_INDIRECT 0x0010 3131#define ZDB_FLAG_PHYS 0x0020 3132#define ZDB_FLAG_RAW 0x0040 3133#define ZDB_FLAG_PRINT_BLKPTR 0x0080 3134 3135int flagbits[256]; 3136 3137static void 3138zdb_print_blkptr(blkptr_t *bp, int flags) 3139{ 3140 char blkbuf[BP_SPRINTF_LEN]; 3141 3142 if (flags & ZDB_FLAG_BSWAP) 3143 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 3144 3145 snprintf_blkptr(blkbuf, sizeof (blkbuf), bp); 3146 (void) printf("%s\n", blkbuf); 3147} 3148 3149static void 3150zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 3151{ 3152 int i; 3153 3154 for (i = 0; i < nbps; i++) 3155 zdb_print_blkptr(&bp[i], flags); 3156} 3157 3158static void 3159zdb_dump_gbh(void *buf, int flags) 3160{ 3161 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 3162} 3163 3164static void 3165zdb_dump_block_raw(void *buf, uint64_t size, int flags) 3166{ 3167 if (flags & ZDB_FLAG_BSWAP) 3168 byteswap_uint64_array(buf, size); 3169 (void) write(1, buf, size); 3170} 3171 3172static void 3173zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 3174{ 3175 uint64_t *d = (uint64_t *)buf; 3176 int nwords = size / sizeof (uint64_t); 3177 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 3178 int i, j; 3179 char *hdr, *c; 3180 3181 3182 if (do_bswap) 3183 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 3184 else 3185 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 3186 3187 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 3188 3189 for (i = 0; i < nwords; i += 2) { 3190 (void) printf("%06llx: %016llx %016llx ", 3191 (u_longlong_t)(i * sizeof (uint64_t)), 3192 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 3193 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 3194 3195 c = (char *)&d[i]; 3196 for (j = 0; j < 2 * sizeof (uint64_t); j++) 3197 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 3198 (void) printf("\n"); 3199 } 3200} 3201 3202/* 3203 * There are two acceptable formats: 3204 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 3205 * child[.child]* - For example: 0.1.1 3206 * 3207 * The second form can be used to specify arbitrary vdevs anywhere 3208 * in the heirarchy. For example, in a pool with a mirror of 3209 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 3210 */ 3211static vdev_t * 3212zdb_vdev_lookup(vdev_t *vdev, char *path) 3213{ 3214 char *s, *p, *q; 3215 int i; 3216 3217 if (vdev == NULL) 3218 return (NULL); 3219 3220 /* First, assume the x.x.x.x format */ 3221 i = (int)strtoul(path, &s, 10); 3222 if (s == path || (s && *s != '.' && *s != '\0')) 3223 goto name; 3224 if (i < 0 || i >= vdev->vdev_children) 3225 return (NULL); 3226 3227 vdev = vdev->vdev_child[i]; 3228 if (*s == '\0') 3229 return (vdev); 3230 return (zdb_vdev_lookup(vdev, s+1)); 3231 3232name: 3233 for (i = 0; i < vdev->vdev_children; i++) { 3234 vdev_t *vc = vdev->vdev_child[i]; 3235 3236 if (vc->vdev_path == NULL) { 3237 vc = zdb_vdev_lookup(vc, path); 3238 if (vc == NULL) 3239 continue; 3240 else 3241 return (vc); 3242 } 3243 3244 p = strrchr(vc->vdev_path, '/'); 3245 p = p ? p + 1 : vc->vdev_path; 3246 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 3247 3248 if (strcmp(vc->vdev_path, path) == 0) 3249 return (vc); 3250 if (strcmp(p, path) == 0) 3251 return (vc); 3252 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 3253 return (vc); 3254 } 3255 3256 return (NULL); 3257} 3258 3259/* 3260 * Read a block from a pool and print it out. The syntax of the 3261 * block descriptor is: 3262 * 3263 * pool:vdev_specifier:offset:size[:flags] 3264 * 3265 * pool - The name of the pool you wish to read from 3266 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 3267 * offset - offset, in hex, in bytes 3268 * size - Amount of data to read, in hex, in bytes 3269 * flags - A string of characters specifying options 3270 * b: Decode a blkptr at given offset within block 3271 * *c: Calculate and display checksums 3272 * d: Decompress data before dumping 3273 * e: Byteswap data before dumping 3274 * g: Display data as a gang block header 3275 * i: Display as an indirect block 3276 * p: Do I/O to physical offset 3277 * r: Dump raw data to stdout 3278 * 3279 * * = not yet implemented 3280 */ 3281static void 3282zdb_read_block(char *thing, spa_t *spa) 3283{ 3284 blkptr_t blk, *bp = &blk; 3285 dva_t *dva = bp->blk_dva; 3286 int flags = 0; 3287 uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0; 3288 zio_t *zio; 3289 vdev_t *vd; 3290 void *pbuf, *lbuf, *buf; 3291 char *s, *p, *dup, *vdev, *flagstr; 3292 int i, error; 3293 3294 dup = strdup(thing); 3295 s = strtok(dup, ":"); 3296 vdev = s ? s : ""; 3297 s = strtok(NULL, ":"); 3298 offset = strtoull(s ? s : "", NULL, 16); 3299 s = strtok(NULL, ":"); 3300 size = strtoull(s ? s : "", NULL, 16); 3301 s = strtok(NULL, ":"); 3302 flagstr = s ? s : ""; 3303 3304 s = NULL; 3305 if (size == 0) 3306 s = "size must not be zero"; 3307 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 3308 s = "size must be a multiple of sector size"; 3309 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 3310 s = "offset must be a multiple of sector size"; 3311 if (s) { 3312 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 3313 free(dup); 3314 return; 3315 } 3316 3317 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 3318 for (i = 0; flagstr[i]; i++) { 3319 int bit = flagbits[(uchar_t)flagstr[i]]; 3320 3321 if (bit == 0) { 3322 (void) printf("***Invalid flag: %c\n", 3323 flagstr[i]); 3324 continue; 3325 } 3326 flags |= bit; 3327 3328 /* If it's not something with an argument, keep going */ 3329 if ((bit & (ZDB_FLAG_CHECKSUM | 3330 ZDB_FLAG_PRINT_BLKPTR)) == 0) 3331 continue; 3332 3333 p = &flagstr[i + 1]; 3334 if (bit == ZDB_FLAG_PRINT_BLKPTR) 3335 blkptr_offset = strtoull(p, &p, 16); 3336 if (*p != ':' && *p != '\0') { 3337 (void) printf("***Invalid flag arg: '%s'\n", s); 3338 free(dup); 3339 return; 3340 } 3341 i += p - &flagstr[i + 1]; /* skip over the number */ 3342 } 3343 } 3344 3345 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 3346 if (vd == NULL) { 3347 (void) printf("***Invalid vdev: %s\n", vdev); 3348 free(dup); 3349 return; 3350 } else { 3351 if (vd->vdev_path) 3352 (void) fprintf(stderr, "Found vdev: %s\n", 3353 vd->vdev_path); 3354 else 3355 (void) fprintf(stderr, "Found vdev type: %s\n", 3356 vd->vdev_ops->vdev_op_type); 3357 } 3358 3359 psize = size; 3360 lsize = size; 3361 3362 pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3363 lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3364 3365 BP_ZERO(bp); 3366 3367 DVA_SET_VDEV(&dva[0], vd->vdev_id); 3368 DVA_SET_OFFSET(&dva[0], offset); 3369 DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH)); 3370 DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize)); 3371 3372 BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL); 3373 3374 BP_SET_LSIZE(bp, lsize); 3375 BP_SET_PSIZE(bp, psize); 3376 BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF); 3377 BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF); 3378 BP_SET_TYPE(bp, DMU_OT_NONE); 3379 BP_SET_LEVEL(bp, 0); 3380 BP_SET_DEDUP(bp, 0); 3381 BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER); 3382 3383 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 3384 zio = zio_root(spa, NULL, NULL, 0); 3385 3386 if (vd == vd->vdev_top) { 3387 /* 3388 * Treat this as a normal block read. 3389 */ 3390 zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL, 3391 ZIO_PRIORITY_SYNC_READ, 3392 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL)); 3393 } else { 3394 /* 3395 * Treat this as a vdev child I/O. 3396 */ 3397 zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize, 3398 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, 3399 ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 3400 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | 3401 ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL)); 3402 } 3403 3404 error = zio_wait(zio); 3405 spa_config_exit(spa, SCL_STATE, FTAG); 3406 3407 if (error) { 3408 (void) printf("Read of %s failed, error: %d\n", thing, error); 3409 goto out; 3410 } 3411 3412 if (flags & ZDB_FLAG_DECOMPRESS) { 3413 /* 3414 * We don't know how the data was compressed, so just try 3415 * every decompress function at every inflated blocksize. 3416 */ 3417 enum zio_compress c; 3418 void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3419 void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL); 3420 3421 bcopy(pbuf, pbuf2, psize); 3422 3423 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize, 3424 SPA_MAXBLOCKSIZE - psize) == 0); 3425 3426 VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize, 3427 SPA_MAXBLOCKSIZE - psize) == 0); 3428 3429 for (lsize = SPA_MAXBLOCKSIZE; lsize > psize; 3430 lsize -= SPA_MINBLOCKSIZE) { 3431 for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) { 3432 if (zio_decompress_data(c, pbuf, lbuf, 3433 psize, lsize) == 0 && 3434 zio_decompress_data(c, pbuf2, lbuf2, 3435 psize, lsize) == 0 && 3436 bcmp(lbuf, lbuf2, lsize) == 0) 3437 break; 3438 } 3439 if (c != ZIO_COMPRESS_FUNCTIONS) 3440 break; 3441 lsize -= SPA_MINBLOCKSIZE; 3442 } 3443 3444 umem_free(pbuf2, SPA_MAXBLOCKSIZE); 3445 umem_free(lbuf2, SPA_MAXBLOCKSIZE); 3446 3447 if (lsize <= psize) { 3448 (void) printf("Decompress of %s failed\n", thing); 3449 goto out; 3450 } 3451 buf = lbuf; 3452 size = lsize; 3453 } else { 3454 buf = pbuf; 3455 size = psize; 3456 } 3457 3458 if (flags & ZDB_FLAG_PRINT_BLKPTR) 3459 zdb_print_blkptr((blkptr_t *)(void *) 3460 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 3461 else if (flags & ZDB_FLAG_RAW) 3462 zdb_dump_block_raw(buf, size, flags); 3463 else if (flags & ZDB_FLAG_INDIRECT) 3464 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 3465 flags); 3466 else if (flags & ZDB_FLAG_GBH) 3467 zdb_dump_gbh(buf, flags); 3468 else 3469 zdb_dump_block(thing, buf, size, flags); 3470 3471out: 3472 umem_free(pbuf, SPA_MAXBLOCKSIZE); 3473 umem_free(lbuf, SPA_MAXBLOCKSIZE); 3474 free(dup); 3475} 3476 3477static boolean_t 3478pool_match(nvlist_t *cfg, char *tgt) 3479{ 3480 uint64_t v, guid = strtoull(tgt, NULL, 0); 3481 char *s; 3482 3483 if (guid != 0) { 3484 if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0) 3485 return (v == guid); 3486 } else { 3487 if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0) 3488 return (strcmp(s, tgt) == 0); 3489 } 3490 return (B_FALSE); 3491} 3492 3493static char * 3494find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv) 3495{ 3496 nvlist_t *pools; 3497 nvlist_t *match = NULL; 3498 char *name = NULL; 3499 char *sepp = NULL; 3500 char sep = '\0'; 3501 int count = 0; 3502 importargs_t args = { 0 }; 3503 3504 args.paths = dirc; 3505 args.path = dirv; 3506 args.can_be_active = B_TRUE; 3507 3508 if ((sepp = strpbrk(*target, "/@")) != NULL) { 3509 sep = *sepp; 3510 *sepp = '\0'; 3511 } 3512 3513 pools = zpool_search_import(g_zfs, &args); 3514 3515 if (pools != NULL) { 3516 nvpair_t *elem = NULL; 3517 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) { 3518 verify(nvpair_value_nvlist(elem, configp) == 0); 3519 if (pool_match(*configp, *target)) { 3520 count++; 3521 if (match != NULL) { 3522 /* print previously found config */ 3523 if (name != NULL) { 3524 (void) printf("%s\n", name); 3525 dump_nvlist(match, 8); 3526 name = NULL; 3527 } 3528 (void) printf("%s\n", 3529 nvpair_name(elem)); 3530 dump_nvlist(*configp, 8); 3531 } else { 3532 match = *configp; 3533 name = nvpair_name(elem); 3534 } 3535 } 3536 } 3537 } 3538 if (count > 1) 3539 (void) fatal("\tMatched %d pools - use pool GUID " 3540 "instead of pool name or \n" 3541 "\tpool name part of a dataset name to select pool", count); 3542 3543 if (sepp) 3544 *sepp = sep; 3545 /* 3546 * If pool GUID was specified for pool id, replace it with pool name 3547 */ 3548 if (name && (strstr(*target, name) != *target)) { 3549 int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0); 3550 3551 *target = umem_alloc(sz, UMEM_NOFAIL); 3552 (void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : ""); 3553 } 3554 3555 *configp = name ? match : NULL; 3556 3557 return (name); 3558} 3559 3560int 3561main(int argc, char **argv) 3562{ 3563 int i, c; 3564 struct rlimit rl = { 1024, 1024 }; 3565 spa_t *spa = NULL; 3566 objset_t *os = NULL; 3567 int dump_all = 1; 3568 int verbose = 0; 3569 int error = 0; 3570 char **searchdirs = NULL; 3571 int nsearch = 0; 3572 char *target; 3573 nvlist_t *policy = NULL; 3574 uint64_t max_txg = UINT64_MAX; 3575 int rewind = ZPOOL_NEVER_REWIND; 3576 char *spa_config_path_env; 3577 boolean_t target_is_spa = B_TRUE; 3578 3579 (void) setrlimit(RLIMIT_NOFILE, &rl); 3580 (void) enable_extended_FILE_stdio(-1, -1); 3581 3582 dprintf_setup(&argc, argv); 3583 3584 /* 3585 * If there is an environment variable SPA_CONFIG_PATH it overrides 3586 * default spa_config_path setting. If -U flag is specified it will 3587 * override this environment variable settings once again. 3588 */ 3589 spa_config_path_env = getenv("SPA_CONFIG_PATH"); 3590 if (spa_config_path_env != NULL) 3591 spa_config_path = spa_config_path_env; 3592 3593 while ((c = getopt(argc, argv, 3594 "bcdhilmMI:suCDRSAFLXx:evp:t:U:PG")) != -1) { 3595 switch (c) { 3596 case 'b': 3597 case 'c': 3598 case 'd': 3599 case 'h': 3600 case 'i': 3601 case 'l': 3602 case 'm': 3603 case 's': 3604 case 'u': 3605 case 'C': 3606 case 'D': 3607 case 'M': 3608 case 'R': 3609 case 'S': 3610 case 'G': 3611 dump_opt[c]++; 3612 dump_all = 0; 3613 break; 3614 case 'A': 3615 case 'F': 3616 case 'L': 3617 case 'X': 3618 case 'e': 3619 case 'P': 3620 dump_opt[c]++; 3621 break; 3622 case 'I': 3623 max_inflight = strtoull(optarg, NULL, 0); 3624 if (max_inflight == 0) { 3625 (void) fprintf(stderr, "maximum number " 3626 "of inflight I/Os must be greater " 3627 "than 0\n"); 3628 usage(); 3629 } 3630 break; 3631 case 'p': 3632 if (searchdirs == NULL) { 3633 searchdirs = umem_alloc(sizeof (char *), 3634 UMEM_NOFAIL); 3635 } else { 3636 char **tmp = umem_alloc((nsearch + 1) * 3637 sizeof (char *), UMEM_NOFAIL); 3638 bcopy(searchdirs, tmp, nsearch * 3639 sizeof (char *)); 3640 umem_free(searchdirs, 3641 nsearch * sizeof (char *)); 3642 searchdirs = tmp; 3643 } 3644 searchdirs[nsearch++] = optarg; 3645 break; 3646 case 't': 3647 max_txg = strtoull(optarg, NULL, 0); 3648 if (max_txg < TXG_INITIAL) { 3649 (void) fprintf(stderr, "incorrect txg " 3650 "specified: %s\n", optarg); 3651 usage(); 3652 } 3653 break; 3654 case 'U': 3655 spa_config_path = optarg; 3656 break; 3657 case 'v': 3658 verbose++; 3659 break; 3660 case 'x': 3661 vn_dumpdir = optarg; 3662 break; 3663 default: 3664 usage(); 3665 break; 3666 } 3667 } 3668 3669 if (!dump_opt['e'] && searchdirs != NULL) { 3670 (void) fprintf(stderr, "-p option requires use of -e\n"); 3671 usage(); 3672 } 3673 3674 /* 3675 * ZDB does not typically re-read blocks; therefore limit the ARC 3676 * to 256 MB, which can be used entirely for metadata. 3677 */ 3678 zfs_arc_max = zfs_arc_meta_limit = 256 * 1024 * 1024; 3679 3680 /* 3681 * "zdb -c" uses checksum-verifying scrub i/os which are async reads. 3682 * "zdb -b" uses traversal prefetch which uses async reads. 3683 * For good performance, let several of them be active at once. 3684 */ 3685 zfs_vdev_async_read_max_active = 10; 3686 3687 kernel_init(FREAD); 3688 g_zfs = libzfs_init(); 3689 if (g_zfs == NULL) 3690 fatal("Fail to initialize zfs"); 3691 3692 if (dump_all) 3693 verbose = MAX(verbose, 1); 3694 3695 for (c = 0; c < 256; c++) { 3696 if (dump_all && !strchr("elAFLRSXP", c)) 3697 dump_opt[c] = 1; 3698 if (dump_opt[c]) 3699 dump_opt[c] += verbose; 3700 } 3701 3702 aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2); 3703 zfs_recover = (dump_opt['A'] > 1); 3704 3705 argc -= optind; 3706 argv += optind; 3707 3708 if (argc < 2 && dump_opt['R']) 3709 usage(); 3710 if (argc < 1) { 3711 if (!dump_opt['e'] && dump_opt['C']) { 3712 dump_cachefile(spa_config_path); 3713 return (0); 3714 } 3715 usage(); 3716 } 3717 3718 if (dump_opt['l']) { 3719 dump_label(argv[0]); 3720 return (0); 3721 } 3722 3723 if (dump_opt['X'] || dump_opt['F']) 3724 rewind = ZPOOL_DO_REWIND | 3725 (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0); 3726 3727 if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 || 3728 nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 || 3729 nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0) 3730 fatal("internal error: %s", strerror(ENOMEM)); 3731 3732 error = 0; 3733 target = argv[0]; 3734 3735 if (dump_opt['e']) { 3736 nvlist_t *cfg = NULL; 3737 char *name = find_zpool(&target, &cfg, nsearch, searchdirs); 3738 3739 error = ENOENT; 3740 if (name) { 3741 if (dump_opt['C'] > 1) { 3742 (void) printf("\nConfiguration for import:\n"); 3743 dump_nvlist(cfg, 8); 3744 } 3745 if (nvlist_add_nvlist(cfg, 3746 ZPOOL_REWIND_POLICY, policy) != 0) { 3747 fatal("can't open '%s': %s", 3748 target, strerror(ENOMEM)); 3749 } 3750 if ((error = spa_import(name, cfg, NULL, 3751 ZFS_IMPORT_MISSING_LOG)) != 0) { 3752 error = spa_import(name, cfg, NULL, 3753 ZFS_IMPORT_VERBATIM); 3754 } 3755 } 3756 } 3757 3758 if (strpbrk(target, "/@") != NULL) { 3759 size_t targetlen; 3760 3761 target_is_spa = B_FALSE; 3762 /* 3763 * Remove any trailing slash. Later code would get confused 3764 * by it, but we want to allow it so that "pool/" can 3765 * indicate that we want to dump the topmost filesystem, 3766 * rather than the whole pool. 3767 */ 3768 targetlen = strlen(target); 3769 if (targetlen != 0 && target[targetlen - 1] == '/') 3770 target[targetlen - 1] = '\0'; 3771 } 3772 3773 if (error == 0) { 3774 if (target_is_spa || dump_opt['R']) { 3775 error = spa_open_rewind(target, &spa, FTAG, policy, 3776 NULL); 3777 if (error) { 3778 /* 3779 * If we're missing the log device then 3780 * try opening the pool after clearing the 3781 * log state. 3782 */ 3783 mutex_enter(&spa_namespace_lock); 3784 if ((spa = spa_lookup(target)) != NULL && 3785 spa->spa_log_state == SPA_LOG_MISSING) { 3786 spa->spa_log_state = SPA_LOG_CLEAR; 3787 error = 0; 3788 } 3789 mutex_exit(&spa_namespace_lock); 3790 3791 if (!error) { 3792 error = spa_open_rewind(target, &spa, 3793 FTAG, policy, NULL); 3794 } 3795 } 3796 } else { 3797 error = dmu_objset_own(target, DMU_OST_ANY, 3798 B_TRUE, FTAG, &os); 3799 } 3800 } 3801 nvlist_free(policy); 3802 3803 if (error) 3804 fatal("can't open '%s': %s", target, strerror(error)); 3805 3806 argv++; 3807 argc--; 3808 if (!dump_opt['R']) { 3809 if (argc > 0) { 3810 zopt_objects = argc; 3811 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 3812 for (i = 0; i < zopt_objects; i++) { 3813 errno = 0; 3814 zopt_object[i] = strtoull(argv[i], NULL, 0); 3815 if (zopt_object[i] == 0 && errno != 0) 3816 fatal("bad number %s: %s", 3817 argv[i], strerror(errno)); 3818 } 3819 } 3820 if (os != NULL) { 3821 dump_dir(os); 3822 } else if (zopt_objects > 0 && !dump_opt['m']) { 3823 dump_dir(spa->spa_meta_objset); 3824 } else { 3825 dump_zpool(spa); 3826 } 3827 } else { 3828 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 3829 flagbits['c'] = ZDB_FLAG_CHECKSUM; 3830 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 3831 flagbits['e'] = ZDB_FLAG_BSWAP; 3832 flagbits['g'] = ZDB_FLAG_GBH; 3833 flagbits['i'] = ZDB_FLAG_INDIRECT; 3834 flagbits['p'] = ZDB_FLAG_PHYS; 3835 flagbits['r'] = ZDB_FLAG_RAW; 3836 3837 for (i = 0; i < argc; i++) 3838 zdb_read_block(argv[i], spa); 3839 } 3840 3841 (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG); 3842 3843 fuid_table_destroy(); 3844 sa_loaded = B_FALSE; 3845 3846 dump_debug_buffer(); 3847 3848 libzfs_fini(g_zfs); 3849 kernel_fini(); 3850 3851 return (0); 3852} 3853