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 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 /* Portions Copyright 2010 Robert Milkowski */ 26 27 #include <mdb/mdb_ctf.h> 28 #include <sys/zfs_context.h> 29 #include <sys/mdb_modapi.h> 30 #include <sys/dbuf.h> 31 #include <sys/dmu_objset.h> 32 #include <sys/dsl_dir.h> 33 #include <sys/dsl_pool.h> 34 #include <sys/metaslab_impl.h> 35 #include <sys/space_map.h> 36 #include <sys/list.h> 37 #include <sys/spa_impl.h> 38 #include <sys/vdev_impl.h> 39 #include <sys/zap_leaf.h> 40 #include <sys/zap_impl.h> 41 #include <ctype.h> 42 #include <sys/zfs_acl.h> 43 #include <sys/sa_impl.h> 44 45 #ifndef _KERNEL 46 #include "../genunix/list.h" 47 #endif 48 49 #ifdef _KERNEL 50 #define ZFS_OBJ_NAME "zfs" 51 #else 52 #define ZFS_OBJ_NAME "libzpool.so.1" 53 #endif 54 55 #ifndef _KERNEL 56 int aok; 57 #endif 58 59 static int 60 getmember(uintptr_t addr, const char *type, mdb_ctf_id_t *idp, 61 const char *member, int len, void *buf) 62 { 63 mdb_ctf_id_t id; 64 ulong_t off; 65 char name[64]; 66 67 if (idp == NULL) { 68 if (mdb_ctf_lookup_by_name(type, &id) == -1) { 69 mdb_warn("couldn't find type %s", type); 70 return (DCMD_ERR); 71 } 72 idp = &id; 73 } else { 74 type = name; 75 mdb_ctf_type_name(*idp, name, sizeof (name)); 76 } 77 78 if (mdb_ctf_offsetof(*idp, member, &off) == -1) { 79 mdb_warn("couldn't find member %s of type %s\n", member, type); 80 return (DCMD_ERR); 81 } 82 if (off % 8 != 0) { 83 mdb_warn("member %s of type %s is unsupported bitfield", 84 member, type); 85 return (DCMD_ERR); 86 } 87 off /= 8; 88 89 if (mdb_vread(buf, len, addr + off) == -1) { 90 mdb_warn("failed to read %s from %s at %p", 91 member, type, addr + off); 92 return (DCMD_ERR); 93 } 94 /* mdb_warn("read %s from %s at %p+%llx\n", member, type, addr, off); */ 95 96 return (0); 97 } 98 99 #define GETMEMB(addr, type, member, dest) \ 100 getmember(addr, #type, NULL, #member, sizeof (dest), &(dest)) 101 102 #define GETMEMBID(addr, ctfid, member, dest) \ 103 getmember(addr, NULL, ctfid, #member, sizeof (dest), &(dest)) 104 105 static int 106 getrefcount(uintptr_t addr, mdb_ctf_id_t *id, 107 const char *member, uint64_t *rc) 108 { 109 static int gotid; 110 static mdb_ctf_id_t rc_id; 111 ulong_t off; 112 113 if (!gotid) { 114 if (mdb_ctf_lookup_by_name("struct refcount", &rc_id) == -1) { 115 mdb_warn("couldn't find struct refcount"); 116 return (DCMD_ERR); 117 } 118 gotid = TRUE; 119 } 120 121 if (mdb_ctf_offsetof(*id, member, &off) == -1) { 122 char name[64]; 123 mdb_ctf_type_name(*id, name, sizeof (name)); 124 mdb_warn("couldn't find member %s of type %s\n", member, name); 125 return (DCMD_ERR); 126 } 127 off /= 8; 128 129 return (GETMEMBID(addr + off, &rc_id, rc_count, *rc)); 130 } 131 132 static boolean_t 133 strisprint(const char *cp) 134 { 135 for (; *cp; cp++) { 136 if (!isprint(*cp)) 137 return (B_FALSE); 138 } 139 return (B_TRUE); 140 } 141 142 static int verbose; 143 144 static int 145 freelist_walk_init(mdb_walk_state_t *wsp) 146 { 147 if (wsp->walk_addr == NULL) { 148 mdb_warn("must supply starting address\n"); 149 return (WALK_ERR); 150 } 151 152 wsp->walk_data = 0; /* Index into the freelist */ 153 return (WALK_NEXT); 154 } 155 156 static int 157 freelist_walk_step(mdb_walk_state_t *wsp) 158 { 159 uint64_t entry; 160 uintptr_t number = (uintptr_t)wsp->walk_data; 161 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID", 162 "INVALID", "INVALID", "INVALID", "INVALID" }; 163 int mapshift = SPA_MINBLOCKSHIFT; 164 165 if (mdb_vread(&entry, sizeof (entry), wsp->walk_addr) == -1) { 166 mdb_warn("failed to read freelist entry %p", wsp->walk_addr); 167 return (WALK_DONE); 168 } 169 wsp->walk_addr += sizeof (entry); 170 wsp->walk_data = (void *)(number + 1); 171 172 if (SM_DEBUG_DECODE(entry)) { 173 mdb_printf("DEBUG: %3u %10s: txg=%llu pass=%llu\n", 174 number, 175 ddata[SM_DEBUG_ACTION_DECODE(entry)], 176 SM_DEBUG_TXG_DECODE(entry), 177 SM_DEBUG_SYNCPASS_DECODE(entry)); 178 } else { 179 mdb_printf("Entry: %3u offsets=%08llx-%08llx type=%c " 180 "size=%06llx", number, 181 SM_OFFSET_DECODE(entry) << mapshift, 182 (SM_OFFSET_DECODE(entry) + SM_RUN_DECODE(entry)) << 183 mapshift, 184 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 185 SM_RUN_DECODE(entry) << mapshift); 186 if (verbose) 187 mdb_printf(" (raw=%012llx)\n", entry); 188 mdb_printf("\n"); 189 } 190 return (WALK_NEXT); 191 } 192 193 194 static int 195 dataset_name(uintptr_t addr, char *buf) 196 { 197 static int gotid; 198 static mdb_ctf_id_t dd_id; 199 uintptr_t dd_parent; 200 char dd_myname[MAXNAMELEN]; 201 202 if (!gotid) { 203 if (mdb_ctf_lookup_by_name("struct dsl_dir", 204 &dd_id) == -1) { 205 mdb_warn("couldn't find struct dsl_dir"); 206 return (DCMD_ERR); 207 } 208 gotid = TRUE; 209 } 210 if (GETMEMBID(addr, &dd_id, dd_parent, dd_parent) || 211 GETMEMBID(addr, &dd_id, dd_myname, dd_myname)) { 212 return (DCMD_ERR); 213 } 214 215 if (dd_parent) { 216 if (dataset_name(dd_parent, buf)) 217 return (DCMD_ERR); 218 strcat(buf, "/"); 219 } 220 221 if (dd_myname[0]) 222 strcat(buf, dd_myname); 223 else 224 strcat(buf, "???"); 225 226 return (0); 227 } 228 229 static int 230 objset_name(uintptr_t addr, char *buf) 231 { 232 static int gotid; 233 static mdb_ctf_id_t os_id, ds_id; 234 uintptr_t os_dsl_dataset; 235 char ds_snapname[MAXNAMELEN]; 236 uintptr_t ds_dir; 237 238 buf[0] = '\0'; 239 240 if (!gotid) { 241 if (mdb_ctf_lookup_by_name("struct objset", 242 &os_id) == -1) { 243 mdb_warn("couldn't find struct objset"); 244 return (DCMD_ERR); 245 } 246 if (mdb_ctf_lookup_by_name("struct dsl_dataset", 247 &ds_id) == -1) { 248 mdb_warn("couldn't find struct dsl_dataset"); 249 return (DCMD_ERR); 250 } 251 252 gotid = TRUE; 253 } 254 255 if (GETMEMBID(addr, &os_id, os_dsl_dataset, os_dsl_dataset)) 256 return (DCMD_ERR); 257 258 if (os_dsl_dataset == 0) { 259 strcat(buf, "mos"); 260 return (0); 261 } 262 263 if (GETMEMBID(os_dsl_dataset, &ds_id, ds_snapname, ds_snapname) || 264 GETMEMBID(os_dsl_dataset, &ds_id, ds_dir, ds_dir)) { 265 return (DCMD_ERR); 266 } 267 268 if (ds_dir && dataset_name(ds_dir, buf)) 269 return (DCMD_ERR); 270 271 if (ds_snapname[0]) { 272 strcat(buf, "@"); 273 strcat(buf, ds_snapname); 274 } 275 return (0); 276 } 277 278 static void 279 enum_lookup(char *out, size_t size, mdb_ctf_id_t id, int val, 280 const char *prefix) 281 { 282 const char *cp; 283 size_t len = strlen(prefix); 284 285 if ((cp = mdb_ctf_enum_name(id, val)) != NULL) { 286 if (strncmp(cp, prefix, len) == 0) 287 cp += len; 288 (void) strncpy(out, cp, size); 289 } else { 290 mdb_snprintf(out, size, "? (%d)", val); 291 } 292 } 293 294 /* ARGSUSED */ 295 static int 296 zfs_params(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 297 { 298 /* 299 * This table can be approximately generated by running: 300 * egrep "^[a-z0-9_]+ [a-z0-9_]+( =.*)?;" *.c | cut -d ' ' -f 2 301 */ 302 static const char *params[] = { 303 "arc_reduce_dnlc_percent", 304 "zfs_arc_max", 305 "zfs_arc_min", 306 "arc_shrink_shift", 307 "zfs_mdcomp_disable", 308 "zfs_prefetch_disable", 309 "zfetch_max_streams", 310 "zfetch_min_sec_reap", 311 "zfetch_block_cap", 312 "zfetch_array_rd_sz", 313 "zfs_default_bs", 314 "zfs_default_ibs", 315 "metaslab_aliquot", 316 "reference_tracking_enable", 317 "reference_history", 318 "spa_max_replication_override", 319 "spa_mode_global", 320 "zfs_flags", 321 "zfs_txg_synctime", 322 "zfs_txg_timeout", 323 "zfs_write_limit_min", 324 "zfs_write_limit_max", 325 "zfs_write_limit_shift", 326 "zfs_write_limit_override", 327 "zfs_no_write_throttle", 328 "zfs_vdev_cache_max", 329 "zfs_vdev_cache_size", 330 "zfs_vdev_cache_bshift", 331 "vdev_mirror_shift", 332 "zfs_vdev_max_pending", 333 "zfs_vdev_min_pending", 334 "zfs_scrub_limit", 335 "zfs_no_scrub_io", 336 "zfs_no_scrub_prefetch", 337 "zfs_vdev_time_shift", 338 "zfs_vdev_ramp_rate", 339 "zfs_vdev_aggregation_limit", 340 "fzap_default_block_shift", 341 "zfs_immediate_write_sz", 342 "zfs_read_chunk_size", 343 "zfs_nocacheflush", 344 "zil_replay_disable", 345 "metaslab_gang_bang", 346 "metaslab_df_alloc_threshold", 347 "metaslab_df_free_pct", 348 "zio_injection_enabled", 349 "zvol_immediate_write_sz", 350 }; 351 352 for (int i = 0; i < sizeof (params) / sizeof (params[0]); i++) { 353 int sz; 354 uint64_t val64; 355 uint32_t *val32p = (uint32_t *)&val64; 356 357 sz = mdb_readvar(&val64, params[i]); 358 if (sz == 4) { 359 mdb_printf("%s = 0x%x\n", params[i], *val32p); 360 } else if (sz == 8) { 361 mdb_printf("%s = 0x%llx\n", params[i], val64); 362 } else { 363 mdb_warn("variable %s not found", params[i]); 364 } 365 } 366 367 return (DCMD_OK); 368 } 369 370 /* ARGSUSED */ 371 static int 372 blkptr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 373 { 374 mdb_ctf_id_t type_enum, checksum_enum, compress_enum; 375 char type[80], checksum[80], compress[80]; 376 blkptr_t blk, *bp = &blk; 377 char buf[BP_SPRINTF_LEN]; 378 379 if (mdb_vread(&blk, sizeof (blkptr_t), addr) == -1) { 380 mdb_warn("failed to read blkptr_t"); 381 return (DCMD_ERR); 382 } 383 384 if (mdb_ctf_lookup_by_name("enum dmu_object_type", &type_enum) == -1 || 385 mdb_ctf_lookup_by_name("enum zio_checksum", &checksum_enum) == -1 || 386 mdb_ctf_lookup_by_name("enum zio_compress", &compress_enum) == -1) { 387 mdb_warn("Could not find blkptr enumerated types"); 388 return (DCMD_ERR); 389 } 390 391 enum_lookup(type, sizeof (type), type_enum, 392 BP_GET_TYPE(bp), "DMU_OT_"); 393 enum_lookup(checksum, sizeof (checksum), checksum_enum, 394 BP_GET_CHECKSUM(bp), "ZIO_CHECKSUM_"); 395 enum_lookup(compress, sizeof (compress), compress_enum, 396 BP_GET_COMPRESS(bp), "ZIO_COMPRESS_"); 397 398 SPRINTF_BLKPTR(mdb_snprintf, '\n', buf, bp, type, checksum, compress); 399 400 mdb_printf("%s\n", buf); 401 402 return (DCMD_OK); 403 } 404 405 /* ARGSUSED */ 406 static int 407 dbuf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 408 { 409 mdb_ctf_id_t id; 410 dmu_buf_t db; 411 uintptr_t objset; 412 uint8_t level; 413 uint64_t blkid; 414 uint64_t holds; 415 char objectname[32]; 416 char blkidname[32]; 417 char path[MAXNAMELEN]; 418 419 if (DCMD_HDRSPEC(flags)) { 420 mdb_printf(" addr object lvl blkid holds os\n"); 421 } 422 423 if (mdb_ctf_lookup_by_name("struct dmu_buf_impl", &id) == -1) { 424 mdb_warn("couldn't find struct dmu_buf_impl_t"); 425 return (DCMD_ERR); 426 } 427 428 if (GETMEMBID(addr, &id, db_objset, objset) || 429 GETMEMBID(addr, &id, db, db) || 430 GETMEMBID(addr, &id, db_level, level) || 431 GETMEMBID(addr, &id, db_blkid, blkid)) { 432 return (WALK_ERR); 433 } 434 435 if (getrefcount(addr, &id, "db_holds", &holds)) { 436 return (WALK_ERR); 437 } 438 439 if (db.db_object == DMU_META_DNODE_OBJECT) 440 (void) strcpy(objectname, "mdn"); 441 else 442 (void) mdb_snprintf(objectname, sizeof (objectname), "%llx", 443 (u_longlong_t)db.db_object); 444 445 if (blkid == DMU_BONUS_BLKID) 446 (void) strcpy(blkidname, "bonus"); 447 else 448 (void) mdb_snprintf(blkidname, sizeof (blkidname), "%llx", 449 (u_longlong_t)blkid); 450 451 if (objset_name(objset, path)) { 452 return (WALK_ERR); 453 } 454 455 mdb_printf("%p %8s %1u %9s %2llu %s\n", 456 addr, objectname, level, blkidname, holds, path); 457 458 return (DCMD_OK); 459 } 460 461 /* ARGSUSED */ 462 static int 463 dbuf_stats(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 464 { 465 #define HISTOSZ 32 466 uintptr_t dbp; 467 dmu_buf_impl_t db; 468 dbuf_hash_table_t ht; 469 uint64_t bucket, ndbufs; 470 uint64_t histo[HISTOSZ]; 471 uint64_t histo2[HISTOSZ]; 472 int i, maxidx; 473 474 if (mdb_readvar(&ht, "dbuf_hash_table") == -1) { 475 mdb_warn("failed to read 'dbuf_hash_table'"); 476 return (DCMD_ERR); 477 } 478 479 for (i = 0; i < HISTOSZ; i++) { 480 histo[i] = 0; 481 histo2[i] = 0; 482 } 483 484 ndbufs = 0; 485 for (bucket = 0; bucket < ht.hash_table_mask+1; bucket++) { 486 int len; 487 488 if (mdb_vread(&dbp, sizeof (void *), 489 (uintptr_t)(ht.hash_table+bucket)) == -1) { 490 mdb_warn("failed to read hash bucket %u at %p", 491 bucket, ht.hash_table+bucket); 492 return (DCMD_ERR); 493 } 494 495 len = 0; 496 while (dbp != 0) { 497 if (mdb_vread(&db, sizeof (dmu_buf_impl_t), 498 dbp) == -1) { 499 mdb_warn("failed to read dbuf at %p", dbp); 500 return (DCMD_ERR); 501 } 502 dbp = (uintptr_t)db.db_hash_next; 503 for (i = MIN(len, HISTOSZ - 1); i >= 0; i--) 504 histo2[i]++; 505 len++; 506 ndbufs++; 507 } 508 509 if (len >= HISTOSZ) 510 len = HISTOSZ-1; 511 histo[len]++; 512 } 513 514 mdb_printf("hash table has %llu buckets, %llu dbufs " 515 "(avg %llu buckets/dbuf)\n", 516 ht.hash_table_mask+1, ndbufs, 517 (ht.hash_table_mask+1)/ndbufs); 518 519 mdb_printf("\n"); 520 maxidx = 0; 521 for (i = 0; i < HISTOSZ; i++) 522 if (histo[i] > 0) 523 maxidx = i; 524 mdb_printf("hash chain length number of buckets\n"); 525 for (i = 0; i <= maxidx; i++) 526 mdb_printf("%u %llu\n", i, histo[i]); 527 528 mdb_printf("\n"); 529 maxidx = 0; 530 for (i = 0; i < HISTOSZ; i++) 531 if (histo2[i] > 0) 532 maxidx = i; 533 mdb_printf("hash chain depth number of dbufs\n"); 534 for (i = 0; i <= maxidx; i++) 535 mdb_printf("%u or more %llu %llu%%\n", 536 i, histo2[i], histo2[i]*100/ndbufs); 537 538 539 return (DCMD_OK); 540 } 541 542 #define CHAIN_END 0xffff 543 /* 544 * ::zap_leaf [-v] 545 * 546 * Print a zap_leaf_phys_t, assumed to be 16k 547 */ 548 /* ARGSUSED */ 549 static int 550 zap_leaf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 551 { 552 char buf[16*1024]; 553 int verbose = B_FALSE; 554 int four = B_FALSE; 555 zap_leaf_t l; 556 zap_leaf_phys_t *zlp = (void *)buf; 557 int i; 558 559 if (mdb_getopts(argc, argv, 560 'v', MDB_OPT_SETBITS, TRUE, &verbose, 561 '4', MDB_OPT_SETBITS, TRUE, &four, 562 NULL) != argc) 563 return (DCMD_USAGE); 564 565 l.l_phys = zlp; 566 l.l_bs = 14; /* assume 16k blocks */ 567 if (four) 568 l.l_bs = 12; 569 570 if (!(flags & DCMD_ADDRSPEC)) { 571 return (DCMD_USAGE); 572 } 573 574 if (mdb_vread(buf, sizeof (buf), addr) == -1) { 575 mdb_warn("failed to read zap_leaf_phys_t at %p", addr); 576 return (DCMD_ERR); 577 } 578 579 if (zlp->l_hdr.lh_block_type != ZBT_LEAF || 580 zlp->l_hdr.lh_magic != ZAP_LEAF_MAGIC) { 581 mdb_warn("This does not appear to be a zap_leaf_phys_t"); 582 return (DCMD_ERR); 583 } 584 585 mdb_printf("zap_leaf_phys_t at %p:\n", addr); 586 mdb_printf(" lh_prefix_len = %u\n", zlp->l_hdr.lh_prefix_len); 587 mdb_printf(" lh_prefix = %llx\n", zlp->l_hdr.lh_prefix); 588 mdb_printf(" lh_nentries = %u\n", zlp->l_hdr.lh_nentries); 589 mdb_printf(" lh_nfree = %u\n", zlp->l_hdr.lh_nfree, 590 zlp->l_hdr.lh_nfree * 100 / (ZAP_LEAF_NUMCHUNKS(&l))); 591 mdb_printf(" lh_freelist = %u\n", zlp->l_hdr.lh_freelist); 592 mdb_printf(" lh_flags = %x (%s)\n", zlp->l_hdr.lh_flags, 593 zlp->l_hdr.lh_flags & ZLF_ENTRIES_CDSORTED ? 594 "ENTRIES_CDSORTED" : ""); 595 596 if (verbose) { 597 mdb_printf(" hash table:\n"); 598 for (i = 0; i < ZAP_LEAF_HASH_NUMENTRIES(&l); i++) { 599 if (zlp->l_hash[i] != CHAIN_END) 600 mdb_printf(" %u: %u\n", i, zlp->l_hash[i]); 601 } 602 } 603 604 mdb_printf(" chunks:\n"); 605 for (i = 0; i < ZAP_LEAF_NUMCHUNKS(&l); i++) { 606 /* LINTED: alignment */ 607 zap_leaf_chunk_t *zlc = &ZAP_LEAF_CHUNK(&l, i); 608 switch (zlc->l_entry.le_type) { 609 case ZAP_CHUNK_FREE: 610 if (verbose) { 611 mdb_printf(" %u: free; lf_next = %u\n", 612 i, zlc->l_free.lf_next); 613 } 614 break; 615 case ZAP_CHUNK_ENTRY: 616 mdb_printf(" %u: entry\n", i); 617 if (verbose) { 618 mdb_printf(" le_next = %u\n", 619 zlc->l_entry.le_next); 620 } 621 mdb_printf(" le_name_chunk = %u\n", 622 zlc->l_entry.le_name_chunk); 623 mdb_printf(" le_name_numints = %u\n", 624 zlc->l_entry.le_name_numints); 625 mdb_printf(" le_value_chunk = %u\n", 626 zlc->l_entry.le_value_chunk); 627 mdb_printf(" le_value_intlen = %u\n", 628 zlc->l_entry.le_value_intlen); 629 mdb_printf(" le_value_numints = %u\n", 630 zlc->l_entry.le_value_numints); 631 mdb_printf(" le_cd = %u\n", 632 zlc->l_entry.le_cd); 633 mdb_printf(" le_hash = %llx\n", 634 zlc->l_entry.le_hash); 635 break; 636 case ZAP_CHUNK_ARRAY: 637 mdb_printf(" %u: array", i); 638 if (strisprint((char *)zlc->l_array.la_array)) 639 mdb_printf(" \"%s\"", zlc->l_array.la_array); 640 mdb_printf("\n"); 641 if (verbose) { 642 int j; 643 mdb_printf(" "); 644 for (j = 0; j < ZAP_LEAF_ARRAY_BYTES; j++) { 645 mdb_printf("%02x ", 646 zlc->l_array.la_array[j]); 647 } 648 mdb_printf("\n"); 649 } 650 if (zlc->l_array.la_next != CHAIN_END) { 651 mdb_printf(" lf_next = %u\n", 652 zlc->l_array.la_next); 653 } 654 break; 655 default: 656 mdb_printf(" %u: undefined type %u\n", 657 zlc->l_entry.le_type); 658 } 659 } 660 661 return (DCMD_OK); 662 } 663 664 typedef struct dbufs_data { 665 mdb_ctf_id_t id; 666 uint64_t objset; 667 uint64_t object; 668 uint64_t level; 669 uint64_t blkid; 670 char *osname; 671 } dbufs_data_t; 672 673 #define DBUFS_UNSET (0xbaddcafedeadbeefULL) 674 675 /* ARGSUSED */ 676 static int 677 dbufs_cb(uintptr_t addr, const void *unknown, void *arg) 678 { 679 dbufs_data_t *data = arg; 680 uintptr_t objset; 681 dmu_buf_t db; 682 uint8_t level; 683 uint64_t blkid; 684 char osname[MAXNAMELEN]; 685 686 if (GETMEMBID(addr, &data->id, db_objset, objset) || 687 GETMEMBID(addr, &data->id, db, db) || 688 GETMEMBID(addr, &data->id, db_level, level) || 689 GETMEMBID(addr, &data->id, db_blkid, blkid)) { 690 return (WALK_ERR); 691 } 692 693 if ((data->objset == DBUFS_UNSET || data->objset == objset) && 694 (data->osname == NULL || (objset_name(objset, osname) == 0 && 695 strcmp(data->osname, osname) == 0)) && 696 (data->object == DBUFS_UNSET || data->object == db.db_object) && 697 (data->level == DBUFS_UNSET || data->level == level) && 698 (data->blkid == DBUFS_UNSET || data->blkid == blkid)) { 699 mdb_printf("%#lr\n", addr); 700 } 701 return (WALK_NEXT); 702 } 703 704 /* ARGSUSED */ 705 static int 706 dbufs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 707 { 708 dbufs_data_t data; 709 char *object = NULL; 710 char *blkid = NULL; 711 712 data.objset = data.object = data.level = data.blkid = DBUFS_UNSET; 713 data.osname = NULL; 714 715 if (mdb_getopts(argc, argv, 716 'O', MDB_OPT_UINT64, &data.objset, 717 'n', MDB_OPT_STR, &data.osname, 718 'o', MDB_OPT_STR, &object, 719 'l', MDB_OPT_UINT64, &data.level, 720 'b', MDB_OPT_STR, &blkid) != argc) { 721 return (DCMD_USAGE); 722 } 723 724 if (object) { 725 if (strcmp(object, "mdn") == 0) { 726 data.object = DMU_META_DNODE_OBJECT; 727 } else { 728 data.object = mdb_strtoull(object); 729 } 730 } 731 732 if (blkid) { 733 if (strcmp(blkid, "bonus") == 0) { 734 data.blkid = DMU_BONUS_BLKID; 735 } else { 736 data.blkid = mdb_strtoull(blkid); 737 } 738 } 739 740 if (mdb_ctf_lookup_by_name("struct dmu_buf_impl", &data.id) == -1) { 741 mdb_warn("couldn't find struct dmu_buf_impl_t"); 742 return (DCMD_ERR); 743 } 744 745 if (mdb_walk("dmu_buf_impl_t", dbufs_cb, &data) != 0) { 746 mdb_warn("can't walk dbufs"); 747 return (DCMD_ERR); 748 } 749 750 return (DCMD_OK); 751 } 752 753 typedef struct abuf_find_data { 754 dva_t dva; 755 mdb_ctf_id_t id; 756 } abuf_find_data_t; 757 758 /* ARGSUSED */ 759 static int 760 abuf_find_cb(uintptr_t addr, const void *unknown, void *arg) 761 { 762 abuf_find_data_t *data = arg; 763 dva_t dva; 764 765 if (GETMEMBID(addr, &data->id, b_dva, dva)) { 766 return (WALK_ERR); 767 } 768 769 if (dva.dva_word[0] == data->dva.dva_word[0] && 770 dva.dva_word[1] == data->dva.dva_word[1]) { 771 mdb_printf("%#lr\n", addr); 772 } 773 return (WALK_NEXT); 774 } 775 776 /* ARGSUSED */ 777 static int 778 abuf_find(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 779 { 780 abuf_find_data_t data; 781 GElf_Sym sym; 782 int i; 783 const char *syms[] = { 784 "ARC_mru", 785 "ARC_mru_ghost", 786 "ARC_mfu", 787 "ARC_mfu_ghost", 788 }; 789 790 if (argc != 2) 791 return (DCMD_USAGE); 792 793 for (i = 0; i < 2; i ++) { 794 switch (argv[i].a_type) { 795 case MDB_TYPE_STRING: 796 data.dva.dva_word[i] = mdb_strtoull(argv[i].a_un.a_str); 797 break; 798 case MDB_TYPE_IMMEDIATE: 799 data.dva.dva_word[i] = argv[i].a_un.a_val; 800 break; 801 default: 802 return (DCMD_USAGE); 803 } 804 } 805 806 if (mdb_ctf_lookup_by_name("struct arc_buf_hdr", &data.id) == -1) { 807 mdb_warn("couldn't find struct arc_buf_hdr"); 808 return (DCMD_ERR); 809 } 810 811 for (i = 0; i < sizeof (syms) / sizeof (syms[0]); i++) { 812 if (mdb_lookup_by_name(syms[i], &sym)) { 813 mdb_warn("can't find symbol %s", syms[i]); 814 return (DCMD_ERR); 815 } 816 817 if (mdb_pwalk("list", abuf_find_cb, &data, sym.st_value) != 0) { 818 mdb_warn("can't walk %s", syms[i]); 819 return (DCMD_ERR); 820 } 821 } 822 823 return (DCMD_OK); 824 } 825 826 /* ARGSUSED */ 827 static int 828 dbgmsg_cb(uintptr_t addr, const void *unknown, void *arg) 829 { 830 static mdb_ctf_id_t id; 831 static boolean_t gotid; 832 static ulong_t off; 833 834 int *verbosep = arg; 835 time_t timestamp; 836 char buf[1024]; 837 838 if (!gotid) { 839 if (mdb_ctf_lookup_by_name("struct zfs_dbgmsg", &id) == -1) { 840 mdb_warn("couldn't find struct zfs_dbgmsg"); 841 return (WALK_ERR); 842 } 843 gotid = TRUE; 844 if (mdb_ctf_offsetof(id, "zdm_msg", &off) == -1) { 845 mdb_warn("couldn't find zdm_msg"); 846 return (WALK_ERR); 847 } 848 off /= 8; 849 } 850 851 852 if (GETMEMBID(addr, &id, zdm_timestamp, timestamp)) { 853 return (WALK_ERR); 854 } 855 856 if (mdb_readstr(buf, sizeof (buf), addr + off) == -1) { 857 mdb_warn("failed to read zdm_msg at %p\n", addr + off); 858 return (DCMD_ERR); 859 } 860 861 if (*verbosep) 862 mdb_printf("%Y ", timestamp); 863 864 mdb_printf("%s\n", buf); 865 866 if (*verbosep) 867 (void) mdb_call_dcmd("whatis", addr, DCMD_ADDRSPEC, 0, NULL); 868 869 return (WALK_NEXT); 870 } 871 872 /* ARGSUSED */ 873 static int 874 dbgmsg(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 875 { 876 GElf_Sym sym; 877 int verbose = FALSE; 878 879 if (mdb_getopts(argc, argv, 880 'v', MDB_OPT_SETBITS, TRUE, &verbose, 881 NULL) != argc) 882 return (DCMD_USAGE); 883 884 if (mdb_lookup_by_name("zfs_dbgmsgs", &sym)) { 885 mdb_warn("can't find zfs_dbgmsgs"); 886 return (DCMD_ERR); 887 } 888 889 if (mdb_pwalk("list", dbgmsg_cb, &verbose, sym.st_value) != 0) { 890 mdb_warn("can't walk zfs_dbgmsgs"); 891 return (DCMD_ERR); 892 } 893 894 return (DCMD_OK); 895 } 896 897 /*ARGSUSED*/ 898 static int 899 arc_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 900 { 901 kstat_named_t *stats; 902 GElf_Sym sym; 903 int nstats, i; 904 uint_t opt_a = FALSE; 905 uint_t opt_b = FALSE; 906 uint_t shift = 0; 907 const char *suffix; 908 909 static const char *bytestats[] = { 910 "p", "c", "c_min", "c_max", "size", NULL 911 }; 912 913 static const char *extras[] = { 914 "arc_no_grow", "arc_tempreserve", 915 "arc_meta_used", "arc_meta_limit", "arc_meta_max", 916 NULL 917 }; 918 919 if (mdb_lookup_by_name("arc_stats", &sym) == -1) { 920 mdb_warn("failed to find 'arc_stats'"); 921 return (DCMD_ERR); 922 } 923 924 stats = mdb_zalloc(sym.st_size, UM_SLEEP | UM_GC); 925 926 if (mdb_vread(stats, sym.st_size, sym.st_value) == -1) { 927 mdb_warn("couldn't read 'arc_stats' at %p", sym.st_value); 928 return (DCMD_ERR); 929 } 930 931 nstats = sym.st_size / sizeof (kstat_named_t); 932 933 /* NB: -a / opt_a are ignored for backwards compatability */ 934 if (mdb_getopts(argc, argv, 935 'a', MDB_OPT_SETBITS, TRUE, &opt_a, 936 'b', MDB_OPT_SETBITS, TRUE, &opt_b, 937 'k', MDB_OPT_SETBITS, 10, &shift, 938 'm', MDB_OPT_SETBITS, 20, &shift, 939 'g', MDB_OPT_SETBITS, 30, &shift, 940 NULL) != argc) 941 return (DCMD_USAGE); 942 943 if (!opt_b && !shift) 944 shift = 20; 945 946 switch (shift) { 947 case 0: 948 suffix = "B"; 949 break; 950 case 10: 951 suffix = "KB"; 952 break; 953 case 20: 954 suffix = "MB"; 955 break; 956 case 30: 957 suffix = "GB"; 958 break; 959 default: 960 suffix = "XX"; 961 } 962 963 for (i = 0; i < nstats; i++) { 964 int j; 965 boolean_t bytes = B_FALSE; 966 967 for (j = 0; bytestats[j]; j++) { 968 if (strcmp(stats[i].name, bytestats[j]) == 0) { 969 bytes = B_TRUE; 970 break; 971 } 972 } 973 974 if (bytes) { 975 mdb_printf("%-25s = %9llu %s\n", stats[i].name, 976 stats[i].value.ui64 >> shift, suffix); 977 } else { 978 mdb_printf("%-25s = %9llu\n", stats[i].name, 979 stats[i].value.ui64); 980 } 981 } 982 983 for (i = 0; extras[i]; i++) { 984 uint64_t buf; 985 986 if (mdb_lookup_by_name(extras[i], &sym) == -1) { 987 mdb_warn("failed to find '%s'", extras[i]); 988 return (DCMD_ERR); 989 } 990 991 if (sym.st_size != sizeof (uint64_t) && 992 sym.st_size != sizeof (uint32_t)) { 993 mdb_warn("expected scalar for variable '%s'\n", 994 extras[i]); 995 return (DCMD_ERR); 996 } 997 998 if (mdb_vread(&buf, sym.st_size, sym.st_value) == -1) { 999 mdb_warn("couldn't read '%s'", extras[i]); 1000 return (DCMD_ERR); 1001 } 1002 1003 mdb_printf("%-25s = ", extras[i]); 1004 1005 /* NB: all the 64-bit extras happen to be byte counts */ 1006 if (sym.st_size == sizeof (uint64_t)) 1007 mdb_printf("%9llu %s\n", buf >> shift, suffix); 1008 1009 if (sym.st_size == sizeof (uint32_t)) 1010 mdb_printf("%9d\n", *((uint32_t *)&buf)); 1011 } 1012 return (DCMD_OK); 1013 } 1014 1015 /* 1016 * ::spa 1017 * 1018 * -c Print configuration information as well 1019 * -v Print vdev state 1020 * -e Print vdev error stats 1021 * 1022 * Print a summarized spa_t. When given no arguments, prints out a table of all 1023 * active pools on the system. 1024 */ 1025 /* ARGSUSED */ 1026 static int 1027 spa_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1028 { 1029 spa_t spa; 1030 const char *statetab[] = { "ACTIVE", "EXPORTED", "DESTROYED", 1031 "SPARE", "L2CACHE", "UNINIT", "UNAVAIL", "POTENTIAL" }; 1032 const char *state; 1033 int config = FALSE; 1034 int vdevs = FALSE; 1035 int errors = FALSE; 1036 1037 if (mdb_getopts(argc, argv, 1038 'c', MDB_OPT_SETBITS, TRUE, &config, 1039 'v', MDB_OPT_SETBITS, TRUE, &vdevs, 1040 'e', MDB_OPT_SETBITS, TRUE, &errors, 1041 NULL) != argc) 1042 return (DCMD_USAGE); 1043 1044 if (!(flags & DCMD_ADDRSPEC)) { 1045 if (mdb_walk_dcmd("spa", "spa", argc, argv) == -1) { 1046 mdb_warn("can't walk spa"); 1047 return (DCMD_ERR); 1048 } 1049 1050 return (DCMD_OK); 1051 } 1052 1053 if (flags & DCMD_PIPE_OUT) { 1054 mdb_printf("%#lr\n", addr); 1055 return (DCMD_OK); 1056 } 1057 1058 if (DCMD_HDRSPEC(flags)) 1059 mdb_printf("%<u>%-?s %9s %-*s%</u>\n", "ADDR", "STATE", 1060 sizeof (uintptr_t) == 4 ? 60 : 52, "NAME"); 1061 1062 if (mdb_vread(&spa, sizeof (spa), addr) == -1) { 1063 mdb_warn("failed to read spa_t at %p", addr); 1064 return (DCMD_ERR); 1065 } 1066 1067 if (spa.spa_state < 0 || spa.spa_state > POOL_STATE_UNAVAIL) 1068 state = "UNKNOWN"; 1069 else 1070 state = statetab[spa.spa_state]; 1071 1072 mdb_printf("%0?p %9s %s\n", addr, state, spa.spa_name); 1073 1074 if (config) { 1075 mdb_printf("\n"); 1076 mdb_inc_indent(4); 1077 if (mdb_call_dcmd("spa_config", addr, flags, 0, 1078 NULL) != DCMD_OK) 1079 return (DCMD_ERR); 1080 mdb_dec_indent(4); 1081 } 1082 1083 if (vdevs || errors) { 1084 mdb_arg_t v; 1085 1086 v.a_type = MDB_TYPE_STRING; 1087 v.a_un.a_str = "-e"; 1088 1089 mdb_printf("\n"); 1090 mdb_inc_indent(4); 1091 if (mdb_call_dcmd("spa_vdevs", addr, flags, errors ? 1 : 0, 1092 &v) != DCMD_OK) 1093 return (DCMD_ERR); 1094 mdb_dec_indent(4); 1095 } 1096 1097 return (DCMD_OK); 1098 } 1099 1100 /* 1101 * ::spa_config 1102 * 1103 * Given a spa_t, print the configuration information stored in spa_config. 1104 * Since it's just an nvlist, format it as an indented list of name=value pairs. 1105 * We simply read the value of spa_config and pass off to ::nvlist. 1106 */ 1107 /* ARGSUSED */ 1108 static int 1109 spa_print_config(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1110 { 1111 spa_t spa; 1112 1113 if (argc != 0 || !(flags & DCMD_ADDRSPEC)) 1114 return (DCMD_USAGE); 1115 1116 if (mdb_vread(&spa, sizeof (spa), addr) == -1) { 1117 mdb_warn("failed to read spa_t at %p", addr); 1118 return (DCMD_ERR); 1119 } 1120 1121 if (spa.spa_config == NULL) { 1122 mdb_printf("(none)\n"); 1123 return (DCMD_OK); 1124 } 1125 1126 return (mdb_call_dcmd("nvlist", (uintptr_t)spa.spa_config, flags, 1127 0, NULL)); 1128 } 1129 1130 /* 1131 * ::vdev 1132 * 1133 * Print out a summarized vdev_t, in the following form: 1134 * 1135 * ADDR STATE AUX DESC 1136 * fffffffbcde23df0 HEALTHY - /dev/dsk/c0t0d0 1137 * 1138 * If '-r' is specified, recursively visit all children. 1139 * 1140 * With '-e', the statistics associated with the vdev are printed as well. 1141 */ 1142 static int 1143 do_print_vdev(uintptr_t addr, int flags, int depth, int stats, 1144 int recursive) 1145 { 1146 vdev_t vdev; 1147 char desc[MAXNAMELEN]; 1148 int c, children; 1149 uintptr_t *child; 1150 const char *state, *aux; 1151 1152 if (mdb_vread(&vdev, sizeof (vdev), (uintptr_t)addr) == -1) { 1153 mdb_warn("failed to read vdev_t at %p\n", (uintptr_t)addr); 1154 return (DCMD_ERR); 1155 } 1156 1157 if (flags & DCMD_PIPE_OUT) { 1158 mdb_printf("%#lr", addr); 1159 } else { 1160 if (vdev.vdev_path != NULL) { 1161 if (mdb_readstr(desc, sizeof (desc), 1162 (uintptr_t)vdev.vdev_path) == -1) { 1163 mdb_warn("failed to read vdev_path at %p\n", 1164 vdev.vdev_path); 1165 return (DCMD_ERR); 1166 } 1167 } else if (vdev.vdev_ops != NULL) { 1168 vdev_ops_t ops; 1169 if (mdb_vread(&ops, sizeof (ops), 1170 (uintptr_t)vdev.vdev_ops) == -1) { 1171 mdb_warn("failed to read vdev_ops at %p\n", 1172 vdev.vdev_ops); 1173 return (DCMD_ERR); 1174 } 1175 (void) strcpy(desc, ops.vdev_op_type); 1176 } else { 1177 (void) strcpy(desc, "<unknown>"); 1178 } 1179 1180 if (depth == 0 && DCMD_HDRSPEC(flags)) 1181 mdb_printf("%<u>%-?s %-9s %-12s %-*s%</u>\n", 1182 "ADDR", "STATE", "AUX", 1183 sizeof (uintptr_t) == 4 ? 43 : 35, 1184 "DESCRIPTION"); 1185 1186 mdb_printf("%0?p ", addr); 1187 1188 switch (vdev.vdev_state) { 1189 case VDEV_STATE_CLOSED: 1190 state = "CLOSED"; 1191 break; 1192 case VDEV_STATE_OFFLINE: 1193 state = "OFFLINE"; 1194 break; 1195 case VDEV_STATE_CANT_OPEN: 1196 state = "CANT_OPEN"; 1197 break; 1198 case VDEV_STATE_DEGRADED: 1199 state = "DEGRADED"; 1200 break; 1201 case VDEV_STATE_HEALTHY: 1202 state = "HEALTHY"; 1203 break; 1204 case VDEV_STATE_REMOVED: 1205 state = "REMOVED"; 1206 break; 1207 case VDEV_STATE_FAULTED: 1208 state = "FAULTED"; 1209 break; 1210 default: 1211 state = "UNKNOWN"; 1212 break; 1213 } 1214 1215 switch (vdev.vdev_stat.vs_aux) { 1216 case VDEV_AUX_NONE: 1217 aux = "-"; 1218 break; 1219 case VDEV_AUX_OPEN_FAILED: 1220 aux = "OPEN_FAILED"; 1221 break; 1222 case VDEV_AUX_CORRUPT_DATA: 1223 aux = "CORRUPT_DATA"; 1224 break; 1225 case VDEV_AUX_NO_REPLICAS: 1226 aux = "NO_REPLICAS"; 1227 break; 1228 case VDEV_AUX_BAD_GUID_SUM: 1229 aux = "BAD_GUID_SUM"; 1230 break; 1231 case VDEV_AUX_TOO_SMALL: 1232 aux = "TOO_SMALL"; 1233 break; 1234 case VDEV_AUX_BAD_LABEL: 1235 aux = "BAD_LABEL"; 1236 break; 1237 case VDEV_AUX_VERSION_NEWER: 1238 aux = "VERS_NEWER"; 1239 break; 1240 case VDEV_AUX_VERSION_OLDER: 1241 aux = "VERS_OLDER"; 1242 break; 1243 case VDEV_AUX_SPARED: 1244 aux = "SPARED"; 1245 break; 1246 case VDEV_AUX_ERR_EXCEEDED: 1247 aux = "ERR_EXCEEDED"; 1248 break; 1249 case VDEV_AUX_IO_FAILURE: 1250 aux = "IO_FAILURE"; 1251 break; 1252 case VDEV_AUX_BAD_LOG: 1253 aux = "BAD_LOG"; 1254 break; 1255 case VDEV_AUX_EXTERNAL: 1256 aux = "EXTERNAL"; 1257 break; 1258 case VDEV_AUX_SPLIT_POOL: 1259 aux = "SPLIT_POOL"; 1260 break; 1261 default: 1262 aux = "UNKNOWN"; 1263 break; 1264 } 1265 1266 mdb_printf("%-9s %-12s %*s%s\n", state, aux, depth, "", desc); 1267 1268 if (stats) { 1269 vdev_stat_t *vs = &vdev.vdev_stat; 1270 int i; 1271 1272 mdb_inc_indent(4); 1273 mdb_printf("\n"); 1274 mdb_printf("%<u> %12s %12s %12s %12s " 1275 "%12s%</u>\n", "READ", "WRITE", "FREE", "CLAIM", 1276 "IOCTL"); 1277 mdb_printf("OPS "); 1278 for (i = 1; i < ZIO_TYPES; i++) 1279 mdb_printf("%11#llx%s", vs->vs_ops[i], 1280 i == ZIO_TYPES - 1 ? "" : " "); 1281 mdb_printf("\n"); 1282 mdb_printf("BYTES "); 1283 for (i = 1; i < ZIO_TYPES; i++) 1284 mdb_printf("%11#llx%s", vs->vs_bytes[i], 1285 i == ZIO_TYPES - 1 ? "" : " "); 1286 1287 1288 mdb_printf("\n"); 1289 mdb_printf("EREAD %10#llx\n", vs->vs_read_errors); 1290 mdb_printf("EWRITE %10#llx\n", vs->vs_write_errors); 1291 mdb_printf("ECKSUM %10#llx\n", 1292 vs->vs_checksum_errors); 1293 mdb_dec_indent(4); 1294 } 1295 1296 if (stats) 1297 mdb_printf("\n"); 1298 } 1299 1300 children = vdev.vdev_children; 1301 1302 if (children == 0 || !recursive) 1303 return (DCMD_OK); 1304 1305 child = mdb_alloc(children * sizeof (void *), UM_SLEEP | UM_GC); 1306 if (mdb_vread(child, children * sizeof (void *), 1307 (uintptr_t)vdev.vdev_child) == -1) { 1308 mdb_warn("failed to read vdev children at %p", vdev.vdev_child); 1309 return (DCMD_ERR); 1310 } 1311 1312 for (c = 0; c < children; c++) { 1313 if (do_print_vdev(child[c], flags, depth + 2, stats, 1314 recursive)) 1315 return (DCMD_ERR); 1316 } 1317 1318 return (DCMD_OK); 1319 } 1320 1321 static int 1322 vdev_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1323 { 1324 int recursive = FALSE; 1325 int stats = FALSE; 1326 uint64_t depth = 0; 1327 1328 if (mdb_getopts(argc, argv, 1329 'r', MDB_OPT_SETBITS, TRUE, &recursive, 1330 'e', MDB_OPT_SETBITS, TRUE, &stats, 1331 'd', MDB_OPT_UINT64, &depth, 1332 NULL) != argc) 1333 return (DCMD_USAGE); 1334 1335 if (!(flags & DCMD_ADDRSPEC)) { 1336 mdb_warn("no vdev_t address given\n"); 1337 return (DCMD_ERR); 1338 } 1339 1340 return (do_print_vdev(addr, flags, (int)depth, stats, recursive)); 1341 } 1342 1343 typedef struct metaslab_walk_data { 1344 uint64_t mw_numvdevs; 1345 uintptr_t *mw_vdevs; 1346 int mw_curvdev; 1347 uint64_t mw_nummss; 1348 uintptr_t *mw_mss; 1349 int mw_curms; 1350 } metaslab_walk_data_t; 1351 1352 static int 1353 metaslab_walk_step(mdb_walk_state_t *wsp) 1354 { 1355 metaslab_walk_data_t *mw = wsp->walk_data; 1356 metaslab_t ms; 1357 uintptr_t msp; 1358 1359 if (mw->mw_curvdev >= mw->mw_numvdevs) 1360 return (WALK_DONE); 1361 1362 if (mw->mw_mss == NULL) { 1363 uintptr_t mssp; 1364 uintptr_t vdevp; 1365 1366 ASSERT(mw->mw_curms == 0); 1367 ASSERT(mw->mw_nummss == 0); 1368 1369 vdevp = mw->mw_vdevs[mw->mw_curvdev]; 1370 if (GETMEMB(vdevp, struct vdev, vdev_ms, mssp) || 1371 GETMEMB(vdevp, struct vdev, vdev_ms_count, mw->mw_nummss)) { 1372 return (WALK_ERR); 1373 } 1374 1375 mw->mw_mss = mdb_alloc(mw->mw_nummss * sizeof (void*), 1376 UM_SLEEP | UM_GC); 1377 if (mdb_vread(mw->mw_mss, mw->mw_nummss * sizeof (void*), 1378 mssp) == -1) { 1379 mdb_warn("failed to read vdev_ms at %p", mssp); 1380 return (WALK_ERR); 1381 } 1382 } 1383 1384 if (mw->mw_curms >= mw->mw_nummss) { 1385 mw->mw_mss = NULL; 1386 mw->mw_curms = 0; 1387 mw->mw_nummss = 0; 1388 mw->mw_curvdev++; 1389 return (WALK_NEXT); 1390 } 1391 1392 msp = mw->mw_mss[mw->mw_curms]; 1393 if (mdb_vread(&ms, sizeof (metaslab_t), msp) == -1) { 1394 mdb_warn("failed to read metaslab_t at %p", msp); 1395 return (WALK_ERR); 1396 } 1397 1398 mw->mw_curms++; 1399 1400 return (wsp->walk_callback(msp, &ms, wsp->walk_cbdata)); 1401 } 1402 1403 /* ARGSUSED */ 1404 static int 1405 metaslab_walk_init(mdb_walk_state_t *wsp) 1406 { 1407 metaslab_walk_data_t *mw; 1408 uintptr_t root_vdevp; 1409 uintptr_t childp; 1410 1411 if (wsp->walk_addr == NULL) { 1412 mdb_warn("must supply address of spa_t\n"); 1413 return (WALK_ERR); 1414 } 1415 1416 mw = mdb_zalloc(sizeof (metaslab_walk_data_t), UM_SLEEP | UM_GC); 1417 1418 if (GETMEMB(wsp->walk_addr, struct spa, spa_root_vdev, root_vdevp) || 1419 GETMEMB(root_vdevp, struct vdev, vdev_children, mw->mw_numvdevs) || 1420 GETMEMB(root_vdevp, struct vdev, vdev_child, childp)) { 1421 return (DCMD_ERR); 1422 } 1423 1424 mw->mw_vdevs = mdb_alloc(mw->mw_numvdevs * sizeof (void *), 1425 UM_SLEEP | UM_GC); 1426 if (mdb_vread(mw->mw_vdevs, mw->mw_numvdevs * sizeof (void *), 1427 childp) == -1) { 1428 mdb_warn("failed to read root vdev children at %p", childp); 1429 return (DCMD_ERR); 1430 } 1431 1432 wsp->walk_data = mw; 1433 1434 return (WALK_NEXT); 1435 } 1436 1437 typedef struct mdb_spa { 1438 uintptr_t spa_dsl_pool; 1439 uintptr_t spa_root_vdev; 1440 } mdb_spa_t; 1441 1442 typedef struct mdb_dsl_dir { 1443 uintptr_t dd_phys; 1444 int64_t dd_space_towrite[TXG_SIZE]; 1445 } mdb_dsl_dir_t; 1446 1447 typedef struct mdb_dsl_dir_phys { 1448 uint64_t dd_used_bytes; 1449 uint64_t dd_compressed_bytes; 1450 uint64_t dd_uncompressed_bytes; 1451 } mdb_dsl_dir_phys_t; 1452 1453 typedef struct mdb_vdev { 1454 uintptr_t vdev_parent; 1455 uintptr_t vdev_ms; 1456 uint64_t vdev_ms_count; 1457 vdev_stat_t vdev_stat; 1458 } mdb_vdev_t; 1459 1460 typedef struct mdb_metaslab { 1461 space_map_t ms_allocmap[TXG_SIZE]; 1462 space_map_t ms_freemap[TXG_SIZE]; 1463 space_map_t ms_map; 1464 space_map_obj_t ms_smo; 1465 space_map_obj_t ms_smo_syncing; 1466 } mdb_metaslab_t; 1467 1468 typedef struct space_data { 1469 uint64_t ms_allocmap[TXG_SIZE]; 1470 uint64_t ms_freemap[TXG_SIZE]; 1471 uint64_t ms_map; 1472 uint64_t avail; 1473 uint64_t nowavail; 1474 } space_data_t; 1475 1476 /* ARGSUSED */ 1477 static int 1478 space_cb(uintptr_t addr, const void *unknown, void *arg) 1479 { 1480 space_data_t *sd = arg; 1481 mdb_metaslab_t ms; 1482 1483 if (GETMEMB(addr, struct metaslab, ms_allocmap, ms.ms_allocmap) || 1484 GETMEMB(addr, struct metaslab, ms_freemap, ms.ms_freemap) || 1485 GETMEMB(addr, struct metaslab, ms_map, ms.ms_map) || 1486 GETMEMB(addr, struct metaslab, ms_smo, ms.ms_smo) || 1487 GETMEMB(addr, struct metaslab, ms_smo_syncing, ms.ms_smo_syncing)) { 1488 return (WALK_ERR); 1489 } 1490 1491 sd->ms_allocmap[0] += ms.ms_allocmap[0].sm_space; 1492 sd->ms_allocmap[1] += ms.ms_allocmap[1].sm_space; 1493 sd->ms_allocmap[2] += ms.ms_allocmap[2].sm_space; 1494 sd->ms_allocmap[3] += ms.ms_allocmap[3].sm_space; 1495 sd->ms_freemap[0] += ms.ms_freemap[0].sm_space; 1496 sd->ms_freemap[1] += ms.ms_freemap[1].sm_space; 1497 sd->ms_freemap[2] += ms.ms_freemap[2].sm_space; 1498 sd->ms_freemap[3] += ms.ms_freemap[3].sm_space; 1499 sd->ms_map += ms.ms_map.sm_space; 1500 sd->avail += ms.ms_map.sm_size - ms.ms_smo.smo_alloc; 1501 sd->nowavail += ms.ms_map.sm_size - ms.ms_smo_syncing.smo_alloc; 1502 1503 return (WALK_NEXT); 1504 } 1505 1506 /* 1507 * ::spa_space [-b] 1508 * 1509 * Given a spa_t, print out it's on-disk space usage and in-core 1510 * estimates of future usage. If -b is given, print space in bytes. 1511 * Otherwise print in megabytes. 1512 */ 1513 /* ARGSUSED */ 1514 static int 1515 spa_space(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1516 { 1517 mdb_spa_t spa; 1518 uintptr_t dp_root_dir; 1519 mdb_dsl_dir_t dd; 1520 mdb_dsl_dir_phys_t dsp; 1521 uint64_t children; 1522 uintptr_t childaddr; 1523 space_data_t sd; 1524 int shift = 20; 1525 char *suffix = "M"; 1526 int bits = FALSE; 1527 1528 if (mdb_getopts(argc, argv, 'b', MDB_OPT_SETBITS, TRUE, &bits, NULL) != 1529 argc) 1530 return (DCMD_USAGE); 1531 if (!(flags & DCMD_ADDRSPEC)) 1532 return (DCMD_USAGE); 1533 1534 if (bits) { 1535 shift = 0; 1536 suffix = ""; 1537 } 1538 1539 if (GETMEMB(addr, struct spa, spa_dsl_pool, spa.spa_dsl_pool) || 1540 GETMEMB(addr, struct spa, spa_root_vdev, spa.spa_root_vdev) || 1541 GETMEMB(spa.spa_root_vdev, struct vdev, vdev_children, children) || 1542 GETMEMB(spa.spa_root_vdev, struct vdev, vdev_child, childaddr) || 1543 GETMEMB(spa.spa_dsl_pool, struct dsl_pool, 1544 dp_root_dir, dp_root_dir) || 1545 GETMEMB(dp_root_dir, struct dsl_dir, dd_phys, dd.dd_phys) || 1546 GETMEMB(dp_root_dir, struct dsl_dir, 1547 dd_space_towrite, dd.dd_space_towrite) || 1548 GETMEMB(dd.dd_phys, struct dsl_dir_phys, 1549 dd_used_bytes, dsp.dd_used_bytes) || 1550 GETMEMB(dd.dd_phys, struct dsl_dir_phys, 1551 dd_compressed_bytes, dsp.dd_compressed_bytes) || 1552 GETMEMB(dd.dd_phys, struct dsl_dir_phys, 1553 dd_uncompressed_bytes, dsp.dd_uncompressed_bytes)) { 1554 return (DCMD_ERR); 1555 } 1556 1557 mdb_printf("dd_space_towrite = %llu%s %llu%s %llu%s %llu%s\n", 1558 dd.dd_space_towrite[0] >> shift, suffix, 1559 dd.dd_space_towrite[1] >> shift, suffix, 1560 dd.dd_space_towrite[2] >> shift, suffix, 1561 dd.dd_space_towrite[3] >> shift, suffix); 1562 1563 mdb_printf("dd_phys.dd_used_bytes = %llu%s\n", 1564 dsp.dd_used_bytes >> shift, suffix); 1565 mdb_printf("dd_phys.dd_compressed_bytes = %llu%s\n", 1566 dsp.dd_compressed_bytes >> shift, suffix); 1567 mdb_printf("dd_phys.dd_uncompressed_bytes = %llu%s\n", 1568 dsp.dd_uncompressed_bytes >> shift, suffix); 1569 1570 bzero(&sd, sizeof (sd)); 1571 if (mdb_pwalk("metaslab", space_cb, &sd, addr) != 0) { 1572 mdb_warn("can't walk metaslabs"); 1573 return (DCMD_ERR); 1574 } 1575 1576 mdb_printf("ms_allocmap = %llu%s %llu%s %llu%s %llu%s\n", 1577 sd.ms_allocmap[0] >> shift, suffix, 1578 sd.ms_allocmap[1] >> shift, suffix, 1579 sd.ms_allocmap[2] >> shift, suffix, 1580 sd.ms_allocmap[3] >> shift, suffix); 1581 mdb_printf("ms_freemap = %llu%s %llu%s %llu%s %llu%s\n", 1582 sd.ms_freemap[0] >> shift, suffix, 1583 sd.ms_freemap[1] >> shift, suffix, 1584 sd.ms_freemap[2] >> shift, suffix, 1585 sd.ms_freemap[3] >> shift, suffix); 1586 mdb_printf("ms_map = %llu%s\n", sd.ms_map >> shift, suffix); 1587 mdb_printf("last synced avail = %llu%s\n", sd.avail >> shift, suffix); 1588 mdb_printf("current syncing avail = %llu%s\n", 1589 sd.nowavail >> shift, suffix); 1590 1591 return (DCMD_OK); 1592 } 1593 1594 /* 1595 * ::spa_verify 1596 * 1597 * Given a spa_t, verify that that the pool is self-consistent. 1598 * Currently, it only checks to make sure that the vdev tree exists. 1599 */ 1600 /* ARGSUSED */ 1601 static int 1602 spa_verify(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1603 { 1604 spa_t spa; 1605 1606 if (argc != 0 || !(flags & DCMD_ADDRSPEC)) 1607 return (DCMD_USAGE); 1608 1609 if (mdb_vread(&spa, sizeof (spa), addr) == -1) { 1610 mdb_warn("failed to read spa_t at %p", addr); 1611 return (DCMD_ERR); 1612 } 1613 1614 if (spa.spa_root_vdev == NULL) { 1615 mdb_printf("no vdev tree present\n"); 1616 return (DCMD_OK); 1617 } 1618 1619 return (DCMD_OK); 1620 } 1621 1622 static int 1623 spa_print_aux(spa_aux_vdev_t *sav, uint_t flags, mdb_arg_t *v, 1624 const char *name) 1625 { 1626 uintptr_t *aux; 1627 size_t len; 1628 int ret, i; 1629 1630 /* 1631 * Iterate over aux vdevs and print those out as well. This is a 1632 * little annoying because we don't have a root vdev to pass to ::vdev. 1633 * Instead, we print a single line and then call it for each child 1634 * vdev. 1635 */ 1636 if (sav->sav_count != 0) { 1637 v[1].a_type = MDB_TYPE_STRING; 1638 v[1].a_un.a_str = "-d"; 1639 v[2].a_type = MDB_TYPE_IMMEDIATE; 1640 v[2].a_un.a_val = 2; 1641 1642 len = sav->sav_count * sizeof (uintptr_t); 1643 aux = mdb_alloc(len, UM_SLEEP); 1644 if (mdb_vread(aux, len, 1645 (uintptr_t)sav->sav_vdevs) == -1) { 1646 mdb_free(aux, len); 1647 mdb_warn("failed to read l2cache vdevs at %p", 1648 sav->sav_vdevs); 1649 return (DCMD_ERR); 1650 } 1651 1652 mdb_printf("%-?s %-9s %-12s %s\n", "-", "-", "-", name); 1653 1654 for (i = 0; i < sav->sav_count; i++) { 1655 ret = mdb_call_dcmd("vdev", aux[i], flags, 3, v); 1656 if (ret != DCMD_OK) { 1657 mdb_free(aux, len); 1658 return (ret); 1659 } 1660 } 1661 1662 mdb_free(aux, len); 1663 } 1664 1665 return (0); 1666 } 1667 1668 /* 1669 * ::spa_vdevs 1670 * 1671 * -e Include error stats 1672 * 1673 * Print out a summarized list of vdevs for the given spa_t. 1674 * This is accomplished by invoking "::vdev -re" on the root vdev, as well as 1675 * iterating over the cache devices. 1676 */ 1677 /* ARGSUSED */ 1678 static int 1679 spa_vdevs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1680 { 1681 spa_t spa; 1682 mdb_arg_t v[3]; 1683 int errors = FALSE; 1684 int ret; 1685 1686 if (mdb_getopts(argc, argv, 1687 'e', MDB_OPT_SETBITS, TRUE, &errors, 1688 NULL) != argc) 1689 return (DCMD_USAGE); 1690 1691 if (!(flags & DCMD_ADDRSPEC)) 1692 return (DCMD_USAGE); 1693 1694 if (mdb_vread(&spa, sizeof (spa), addr) == -1) { 1695 mdb_warn("failed to read spa_t at %p", addr); 1696 return (DCMD_ERR); 1697 } 1698 1699 /* 1700 * Unitialized spa_t structures can have a NULL root vdev. 1701 */ 1702 if (spa.spa_root_vdev == NULL) { 1703 mdb_printf("no associated vdevs\n"); 1704 return (DCMD_OK); 1705 } 1706 1707 v[0].a_type = MDB_TYPE_STRING; 1708 v[0].a_un.a_str = errors ? "-re" : "-r"; 1709 1710 ret = mdb_call_dcmd("vdev", (uintptr_t)spa.spa_root_vdev, 1711 flags, 1, v); 1712 if (ret != DCMD_OK) 1713 return (ret); 1714 1715 if (spa_print_aux(&spa.spa_l2cache, flags, v, "cache") != 0 || 1716 spa_print_aux(&spa.spa_spares, flags, v, "spares") != 0) 1717 return (DCMD_ERR); 1718 1719 return (DCMD_OK); 1720 } 1721 1722 /* 1723 * ::zio 1724 * 1725 * Print a summary of zio_t and all its children. This is intended to display a 1726 * zio tree, and hence we only pick the most important pieces of information for 1727 * the main summary. More detailed information can always be found by doing a 1728 * '::print zio' on the underlying zio_t. The columns we display are: 1729 * 1730 * ADDRESS TYPE STAGE WAITER 1731 * 1732 * The 'address' column is indented by one space for each depth level as we 1733 * descend down the tree. 1734 */ 1735 1736 #define ZIO_MAXINDENT 24 1737 #define ZIO_MAXWIDTH (sizeof (uintptr_t) * 2 + ZIO_MAXINDENT) 1738 #define ZIO_WALK_SELF 0 1739 #define ZIO_WALK_CHILD 1 1740 #define ZIO_WALK_PARENT 2 1741 1742 typedef struct zio_print_args { 1743 int zpa_current_depth; 1744 int zpa_min_depth; 1745 int zpa_max_depth; 1746 int zpa_type; 1747 uint_t zpa_flags; 1748 } zio_print_args_t; 1749 1750 static int zio_child_cb(uintptr_t addr, const void *unknown, void *arg); 1751 1752 static int 1753 zio_print_cb(uintptr_t addr, const void *data, void *priv) 1754 { 1755 const zio_t *zio = data; 1756 zio_print_args_t *zpa = priv; 1757 mdb_ctf_id_t type_enum, stage_enum; 1758 int indent = zpa->zpa_current_depth; 1759 const char *type, *stage; 1760 uintptr_t laddr; 1761 1762 if (indent > ZIO_MAXINDENT) 1763 indent = ZIO_MAXINDENT; 1764 1765 if (mdb_ctf_lookup_by_name("enum zio_type", &type_enum) == -1 || 1766 mdb_ctf_lookup_by_name("enum zio_stage", &stage_enum) == -1) { 1767 mdb_warn("failed to lookup zio enums"); 1768 return (WALK_ERR); 1769 } 1770 1771 if ((type = mdb_ctf_enum_name(type_enum, zio->io_type)) != NULL) 1772 type += sizeof ("ZIO_TYPE_") - 1; 1773 else 1774 type = "?"; 1775 1776 if ((stage = mdb_ctf_enum_name(stage_enum, zio->io_stage)) != NULL) 1777 stage += sizeof ("ZIO_STAGE_") - 1; 1778 else 1779 stage = "?"; 1780 1781 if (zpa->zpa_current_depth >= zpa->zpa_min_depth) { 1782 if (zpa->zpa_flags & DCMD_PIPE_OUT) { 1783 mdb_printf("%?p\n", addr); 1784 } else { 1785 mdb_printf("%*s%-*p %-5s %-16s ", indent, "", 1786 ZIO_MAXWIDTH - indent, addr, type, stage); 1787 if (zio->io_waiter) 1788 mdb_printf("%?p\n", zio->io_waiter); 1789 else 1790 mdb_printf("-\n"); 1791 } 1792 } 1793 1794 if (zpa->zpa_current_depth >= zpa->zpa_max_depth) 1795 return (WALK_NEXT); 1796 1797 if (zpa->zpa_type == ZIO_WALK_PARENT) 1798 laddr = addr + OFFSETOF(zio_t, io_parent_list); 1799 else 1800 laddr = addr + OFFSETOF(zio_t, io_child_list); 1801 1802 zpa->zpa_current_depth++; 1803 if (mdb_pwalk("list", zio_child_cb, zpa, laddr) != 0) { 1804 mdb_warn("failed to walk zio_t children at %p\n", laddr); 1805 return (WALK_ERR); 1806 } 1807 zpa->zpa_current_depth--; 1808 1809 return (WALK_NEXT); 1810 } 1811 1812 /* ARGSUSED */ 1813 static int 1814 zio_child_cb(uintptr_t addr, const void *unknown, void *arg) 1815 { 1816 zio_link_t zl; 1817 zio_t zio; 1818 uintptr_t ziop; 1819 zio_print_args_t *zpa = arg; 1820 1821 if (mdb_vread(&zl, sizeof (zl), addr) == -1) { 1822 mdb_warn("failed to read zio_link_t at %p", addr); 1823 return (WALK_ERR); 1824 } 1825 1826 if (zpa->zpa_type == ZIO_WALK_PARENT) 1827 ziop = (uintptr_t)zl.zl_parent; 1828 else 1829 ziop = (uintptr_t)zl.zl_child; 1830 1831 if (mdb_vread(&zio, sizeof (zio_t), ziop) == -1) { 1832 mdb_warn("failed to read zio_t at %p", ziop); 1833 return (WALK_ERR); 1834 } 1835 1836 return (zio_print_cb(ziop, &zio, arg)); 1837 } 1838 1839 /* ARGSUSED */ 1840 static int 1841 zio_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1842 { 1843 zio_t zio; 1844 zio_print_args_t zpa = { 0 }; 1845 1846 if (!(flags & DCMD_ADDRSPEC)) 1847 return (DCMD_USAGE); 1848 1849 if (mdb_getopts(argc, argv, 1850 'r', MDB_OPT_SETBITS, INT_MAX, &zpa.zpa_max_depth, 1851 'c', MDB_OPT_SETBITS, ZIO_WALK_CHILD, &zpa.zpa_type, 1852 'p', MDB_OPT_SETBITS, ZIO_WALK_PARENT, &zpa.zpa_type, 1853 NULL) != argc) 1854 return (DCMD_USAGE); 1855 1856 zpa.zpa_flags = flags; 1857 if (zpa.zpa_max_depth != 0) { 1858 if (zpa.zpa_type == ZIO_WALK_SELF) 1859 zpa.zpa_type = ZIO_WALK_CHILD; 1860 } else if (zpa.zpa_type != ZIO_WALK_SELF) { 1861 zpa.zpa_min_depth = 1; 1862 zpa.zpa_max_depth = 1; 1863 } 1864 1865 if (mdb_vread(&zio, sizeof (zio_t), addr) == -1) { 1866 mdb_warn("failed to read zio_t at %p", addr); 1867 return (DCMD_ERR); 1868 } 1869 1870 if (!(flags & DCMD_PIPE_OUT) && DCMD_HDRSPEC(flags)) 1871 mdb_printf("%<u>%-*s %-5s %-16s %-?s%</u>\n", ZIO_MAXWIDTH, 1872 "ADDRESS", "TYPE", "STAGE", "WAITER"); 1873 1874 if (zio_print_cb(addr, &zio, &zpa) != WALK_NEXT) 1875 return (DCMD_ERR); 1876 1877 return (DCMD_OK); 1878 } 1879 1880 /* 1881 * [addr]::zio_state 1882 * 1883 * Print a summary of all zio_t structures on the system, or for a particular 1884 * pool. This is equivalent to '::walk zio_root | ::zio'. 1885 */ 1886 /*ARGSUSED*/ 1887 static int 1888 zio_state(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1889 { 1890 /* 1891 * MDB will remember the last address of the pipeline, so if we don't 1892 * zero this we'll end up trying to walk zio structures for a 1893 * non-existent spa_t. 1894 */ 1895 if (!(flags & DCMD_ADDRSPEC)) 1896 addr = 0; 1897 1898 return (mdb_pwalk_dcmd("zio_root", "zio", argc, argv, addr)); 1899 } 1900 1901 typedef struct txg_list_walk_data { 1902 uintptr_t lw_head[TXG_SIZE]; 1903 int lw_txgoff; 1904 int lw_maxoff; 1905 size_t lw_offset; 1906 void *lw_obj; 1907 } txg_list_walk_data_t; 1908 1909 static int 1910 txg_list_walk_init_common(mdb_walk_state_t *wsp, int txg, int maxoff) 1911 { 1912 txg_list_walk_data_t *lwd; 1913 txg_list_t list; 1914 int i; 1915 1916 lwd = mdb_alloc(sizeof (txg_list_walk_data_t), UM_SLEEP | UM_GC); 1917 if (mdb_vread(&list, sizeof (txg_list_t), wsp->walk_addr) == -1) { 1918 mdb_warn("failed to read txg_list_t at %#lx", wsp->walk_addr); 1919 return (WALK_ERR); 1920 } 1921 1922 for (i = 0; i < TXG_SIZE; i++) 1923 lwd->lw_head[i] = (uintptr_t)list.tl_head[i]; 1924 lwd->lw_offset = list.tl_offset; 1925 lwd->lw_obj = mdb_alloc(lwd->lw_offset + sizeof (txg_node_t), 1926 UM_SLEEP | UM_GC); 1927 lwd->lw_txgoff = txg; 1928 lwd->lw_maxoff = maxoff; 1929 1930 wsp->walk_addr = lwd->lw_head[lwd->lw_txgoff]; 1931 wsp->walk_data = lwd; 1932 1933 return (WALK_NEXT); 1934 } 1935 1936 static int 1937 txg_list_walk_init(mdb_walk_state_t *wsp) 1938 { 1939 return (txg_list_walk_init_common(wsp, 0, TXG_SIZE-1)); 1940 } 1941 1942 static int 1943 txg_list0_walk_init(mdb_walk_state_t *wsp) 1944 { 1945 return (txg_list_walk_init_common(wsp, 0, 0)); 1946 } 1947 1948 static int 1949 txg_list1_walk_init(mdb_walk_state_t *wsp) 1950 { 1951 return (txg_list_walk_init_common(wsp, 1, 1)); 1952 } 1953 1954 static int 1955 txg_list2_walk_init(mdb_walk_state_t *wsp) 1956 { 1957 return (txg_list_walk_init_common(wsp, 2, 2)); 1958 } 1959 1960 static int 1961 txg_list3_walk_init(mdb_walk_state_t *wsp) 1962 { 1963 return (txg_list_walk_init_common(wsp, 3, 3)); 1964 } 1965 1966 static int 1967 txg_list_walk_step(mdb_walk_state_t *wsp) 1968 { 1969 txg_list_walk_data_t *lwd = wsp->walk_data; 1970 uintptr_t addr; 1971 txg_node_t *node; 1972 int status; 1973 1974 while (wsp->walk_addr == NULL && lwd->lw_txgoff < lwd->lw_maxoff) { 1975 lwd->lw_txgoff++; 1976 wsp->walk_addr = lwd->lw_head[lwd->lw_txgoff]; 1977 } 1978 1979 if (wsp->walk_addr == NULL) 1980 return (WALK_DONE); 1981 1982 addr = wsp->walk_addr - lwd->lw_offset; 1983 1984 if (mdb_vread(lwd->lw_obj, 1985 lwd->lw_offset + sizeof (txg_node_t), addr) == -1) { 1986 mdb_warn("failed to read list element at %#lx", addr); 1987 return (WALK_ERR); 1988 } 1989 1990 status = wsp->walk_callback(addr, lwd->lw_obj, wsp->walk_cbdata); 1991 node = (txg_node_t *)((uintptr_t)lwd->lw_obj + lwd->lw_offset); 1992 wsp->walk_addr = (uintptr_t)node->tn_next[lwd->lw_txgoff]; 1993 1994 return (status); 1995 } 1996 1997 /* 1998 * ::walk spa 1999 * 2000 * Walk all named spa_t structures in the namespace. This is nothing more than 2001 * a layered avl walk. 2002 */ 2003 static int 2004 spa_walk_init(mdb_walk_state_t *wsp) 2005 { 2006 GElf_Sym sym; 2007 2008 if (wsp->walk_addr != NULL) { 2009 mdb_warn("spa walk only supports global walks\n"); 2010 return (WALK_ERR); 2011 } 2012 2013 if (mdb_lookup_by_obj(ZFS_OBJ_NAME, "spa_namespace_avl", &sym) == -1) { 2014 mdb_warn("failed to find symbol 'spa_namespace_avl'"); 2015 return (WALK_ERR); 2016 } 2017 2018 wsp->walk_addr = (uintptr_t)sym.st_value; 2019 2020 if (mdb_layered_walk("avl", wsp) == -1) { 2021 mdb_warn("failed to walk 'avl'\n"); 2022 return (WALK_ERR); 2023 } 2024 2025 return (WALK_NEXT); 2026 } 2027 2028 static int 2029 spa_walk_step(mdb_walk_state_t *wsp) 2030 { 2031 spa_t spa; 2032 2033 if (mdb_vread(&spa, sizeof (spa), wsp->walk_addr) == -1) { 2034 mdb_warn("failed to read spa_t at %p", wsp->walk_addr); 2035 return (WALK_ERR); 2036 } 2037 2038 return (wsp->walk_callback(wsp->walk_addr, &spa, wsp->walk_cbdata)); 2039 } 2040 2041 /* 2042 * [addr]::walk zio 2043 * 2044 * Walk all active zio_t structures on the system. This is simply a layered 2045 * walk on top of ::walk zio_cache, with the optional ability to limit the 2046 * structures to a particular pool. 2047 */ 2048 static int 2049 zio_walk_init(mdb_walk_state_t *wsp) 2050 { 2051 wsp->walk_data = (void *)wsp->walk_addr; 2052 2053 if (mdb_layered_walk("zio_cache", wsp) == -1) { 2054 mdb_warn("failed to walk 'zio_cache'\n"); 2055 return (WALK_ERR); 2056 } 2057 2058 return (WALK_NEXT); 2059 } 2060 2061 static int 2062 zio_walk_step(mdb_walk_state_t *wsp) 2063 { 2064 zio_t zio; 2065 2066 if (mdb_vread(&zio, sizeof (zio), wsp->walk_addr) == -1) { 2067 mdb_warn("failed to read zio_t at %p", wsp->walk_addr); 2068 return (WALK_ERR); 2069 } 2070 2071 if (wsp->walk_data != NULL && wsp->walk_data != zio.io_spa) 2072 return (WALK_NEXT); 2073 2074 return (wsp->walk_callback(wsp->walk_addr, &zio, wsp->walk_cbdata)); 2075 } 2076 2077 /* 2078 * [addr]::walk zio_root 2079 * 2080 * Walk only root zio_t structures, optionally for a particular spa_t. 2081 */ 2082 static int 2083 zio_walk_root_step(mdb_walk_state_t *wsp) 2084 { 2085 zio_t zio; 2086 2087 if (mdb_vread(&zio, sizeof (zio), wsp->walk_addr) == -1) { 2088 mdb_warn("failed to read zio_t at %p", wsp->walk_addr); 2089 return (WALK_ERR); 2090 } 2091 2092 if (wsp->walk_data != NULL && wsp->walk_data != zio.io_spa) 2093 return (WALK_NEXT); 2094 2095 /* If the parent list is not empty, ignore */ 2096 if (zio.io_parent_list.list_head.list_next != 2097 &((zio_t *)wsp->walk_addr)->io_parent_list.list_head) 2098 return (WALK_NEXT); 2099 2100 return (wsp->walk_callback(wsp->walk_addr, &zio, wsp->walk_cbdata)); 2101 } 2102 2103 #define NICENUM_BUFLEN 6 2104 2105 static int 2106 snprintfrac(char *buf, int len, 2107 uint64_t numerator, uint64_t denom, int frac_digits) 2108 { 2109 int mul = 1; 2110 int whole, frac, i; 2111 2112 for (i = frac_digits; i; i--) 2113 mul *= 10; 2114 whole = numerator / denom; 2115 frac = mul * numerator / denom - mul * whole; 2116 return (mdb_snprintf(buf, len, "%u.%0*u", whole, frac_digits, frac)); 2117 } 2118 2119 static void 2120 mdb_nicenum(uint64_t num, char *buf) 2121 { 2122 uint64_t n = num; 2123 int index = 0; 2124 char *u; 2125 2126 while (n >= 1024) { 2127 n = (n + (1024 / 2)) / 1024; /* Round up or down */ 2128 index++; 2129 } 2130 2131 u = &" \0K\0M\0G\0T\0P\0E\0"[index*2]; 2132 2133 if (index == 0) { 2134 (void) mdb_snprintf(buf, NICENUM_BUFLEN, "%llu", 2135 (u_longlong_t)n); 2136 } else if (n < 10 && (num & (num - 1)) != 0) { 2137 (void) snprintfrac(buf, NICENUM_BUFLEN, 2138 num, 1ULL << 10 * index, 2); 2139 strcat(buf, u); 2140 } else if (n < 100 && (num & (num - 1)) != 0) { 2141 (void) snprintfrac(buf, NICENUM_BUFLEN, 2142 num, 1ULL << 10 * index, 1); 2143 strcat(buf, u); 2144 } else { 2145 (void) mdb_snprintf(buf, NICENUM_BUFLEN, "%llu%s", 2146 (u_longlong_t)n, u); 2147 } 2148 } 2149 2150 /* 2151 * ::zfs_blkstats 2152 * 2153 * -v print verbose per-level information 2154 * 2155 */ 2156 static int 2157 zfs_blkstats(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 2158 { 2159 boolean_t verbose = B_FALSE; 2160 zfs_all_blkstats_t stats; 2161 dmu_object_type_t t; 2162 zfs_blkstat_t *tzb; 2163 uint64_t ditto; 2164 dmu_object_type_info_t dmu_ot[DMU_OT_NUMTYPES + 10]; 2165 /* +10 in case it grew */ 2166 2167 if (mdb_readvar(&dmu_ot, "dmu_ot") == -1) { 2168 mdb_warn("failed to read 'dmu_ot'"); 2169 return (DCMD_ERR); 2170 } 2171 2172 if (mdb_getopts(argc, argv, 2173 'v', MDB_OPT_SETBITS, TRUE, &verbose, 2174 NULL) != argc) 2175 return (DCMD_USAGE); 2176 2177 if (!(flags & DCMD_ADDRSPEC)) 2178 return (DCMD_USAGE); 2179 2180 if (GETMEMB(addr, struct spa, spa_dsl_pool, addr) || 2181 GETMEMB(addr, struct dsl_pool, dp_blkstats, addr) || 2182 mdb_vread(&stats, sizeof (zfs_all_blkstats_t), addr) == -1) { 2183 mdb_warn("failed to read data at %p;", addr); 2184 mdb_printf("maybe no stats? run \"zpool scrub\" first."); 2185 return (DCMD_ERR); 2186 } 2187 2188 tzb = &stats.zab_type[DN_MAX_LEVELS][DMU_OT_NUMTYPES]; 2189 if (tzb->zb_gangs != 0) { 2190 mdb_printf("Ganged blocks: %llu\n", 2191 (longlong_t)tzb->zb_gangs); 2192 } 2193 2194 ditto = tzb->zb_ditto_2_of_2_samevdev + tzb->zb_ditto_2_of_3_samevdev + 2195 tzb->zb_ditto_3_of_3_samevdev; 2196 if (ditto != 0) { 2197 mdb_printf("Dittoed blocks on same vdev: %llu\n", 2198 (longlong_t)ditto); 2199 } 2200 2201 mdb_printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 2202 "\t avg\t comp\t%%Total\tType\n"); 2203 2204 for (t = 0; t <= DMU_OT_NUMTYPES; t++) { 2205 char csize[NICENUM_BUFLEN], lsize[NICENUM_BUFLEN]; 2206 char psize[NICENUM_BUFLEN], asize[NICENUM_BUFLEN]; 2207 char avg[NICENUM_BUFLEN]; 2208 char comp[NICENUM_BUFLEN], pct[NICENUM_BUFLEN]; 2209 char typename[64]; 2210 int l; 2211 2212 2213 if (t == DMU_OT_DEFERRED) 2214 strcpy(typename, "deferred free"); 2215 else if (t == DMU_OT_TOTAL) 2216 strcpy(typename, "Total"); 2217 else if (mdb_readstr(typename, sizeof (typename), 2218 (uintptr_t)dmu_ot[t].ot_name) == -1) { 2219 mdb_warn("failed to read type name"); 2220 return (DCMD_ERR); 2221 } 2222 2223 if (stats.zab_type[DN_MAX_LEVELS][t].zb_asize == 0) 2224 continue; 2225 2226 for (l = -1; l < DN_MAX_LEVELS; l++) { 2227 int level = (l == -1 ? DN_MAX_LEVELS : l); 2228 zfs_blkstat_t *zb = &stats.zab_type[level][t]; 2229 2230 if (zb->zb_asize == 0) 2231 continue; 2232 2233 /* 2234 * Don't print each level unless requested. 2235 */ 2236 if (!verbose && level != DN_MAX_LEVELS) 2237 continue; 2238 2239 /* 2240 * If all the space is level 0, don't print the 2241 * level 0 separately. 2242 */ 2243 if (level == 0 && zb->zb_asize == 2244 stats.zab_type[DN_MAX_LEVELS][t].zb_asize) 2245 continue; 2246 2247 mdb_nicenum(zb->zb_count, csize); 2248 mdb_nicenum(zb->zb_lsize, lsize); 2249 mdb_nicenum(zb->zb_psize, psize); 2250 mdb_nicenum(zb->zb_asize, asize); 2251 mdb_nicenum(zb->zb_asize / zb->zb_count, avg); 2252 (void) snprintfrac(comp, NICENUM_BUFLEN, 2253 zb->zb_lsize, zb->zb_psize, 2); 2254 (void) snprintfrac(pct, NICENUM_BUFLEN, 2255 100 * zb->zb_asize, tzb->zb_asize, 2); 2256 2257 mdb_printf("%6s\t%5s\t%5s\t%5s\t%5s" 2258 "\t%5s\t%6s\t", 2259 csize, lsize, psize, asize, avg, comp, pct); 2260 2261 if (level == DN_MAX_LEVELS) 2262 mdb_printf("%s\n", typename); 2263 else 2264 mdb_printf(" L%d %s\n", 2265 level, typename); 2266 } 2267 } 2268 2269 return (DCMD_OK); 2270 } 2271 2272 /* ARGSUSED */ 2273 static int 2274 reference_cb(uintptr_t addr, const void *ignored, void *arg) 2275 { 2276 static int gotid; 2277 static mdb_ctf_id_t ref_id; 2278 uintptr_t ref_holder; 2279 uintptr_t ref_removed; 2280 uint64_t ref_number; 2281 boolean_t holder_is_str = B_FALSE; 2282 char holder_str[128]; 2283 boolean_t removed = (boolean_t)arg; 2284 2285 if (!gotid) { 2286 if (mdb_ctf_lookup_by_name("struct reference", &ref_id) == -1) { 2287 mdb_warn("couldn't find struct reference"); 2288 return (WALK_ERR); 2289 } 2290 gotid = TRUE; 2291 } 2292 2293 if (GETMEMBID(addr, &ref_id, ref_holder, ref_holder) || 2294 GETMEMBID(addr, &ref_id, ref_removed, ref_removed) || 2295 GETMEMBID(addr, &ref_id, ref_number, ref_number)) 2296 return (WALK_ERR); 2297 2298 if (mdb_readstr(holder_str, sizeof (holder_str), ref_holder) != -1) 2299 holder_is_str = strisprint(holder_str); 2300 2301 if (removed) 2302 mdb_printf("removed "); 2303 mdb_printf("reference "); 2304 if (ref_number != 1) 2305 mdb_printf("with count=%llu ", ref_number); 2306 mdb_printf("with tag %p", (void*)ref_holder); 2307 if (holder_is_str) 2308 mdb_printf(" \"%s\"", holder_str); 2309 mdb_printf(", held at:\n"); 2310 2311 (void) mdb_call_dcmd("whatis", addr, DCMD_ADDRSPEC, 0, NULL); 2312 2313 if (removed) { 2314 mdb_printf("removed at:\n"); 2315 (void) mdb_call_dcmd("whatis", ref_removed, 2316 DCMD_ADDRSPEC, 0, NULL); 2317 } 2318 2319 mdb_printf("\n"); 2320 2321 return (WALK_NEXT); 2322 } 2323 2324 /* ARGSUSED */ 2325 static int 2326 refcount(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 2327 { 2328 uint64_t rc_count, rc_removed_count; 2329 uintptr_t rc_list, rc_removed; 2330 static int gotid; 2331 static mdb_ctf_id_t rc_id; 2332 ulong_t off; 2333 2334 if (!(flags & DCMD_ADDRSPEC)) 2335 return (DCMD_USAGE); 2336 2337 if (!gotid) { 2338 if (mdb_ctf_lookup_by_name("struct refcount", &rc_id) == -1) { 2339 mdb_warn("couldn't find struct refcount"); 2340 return (DCMD_ERR); 2341 } 2342 gotid = TRUE; 2343 } 2344 2345 if (GETMEMBID(addr, &rc_id, rc_count, rc_count) || 2346 GETMEMBID(addr, &rc_id, rc_removed_count, rc_removed_count)) 2347 return (DCMD_ERR); 2348 2349 mdb_printf("refcount_t at %p has %llu current holds, " 2350 "%llu recently released holds\n", 2351 addr, (longlong_t)rc_count, (longlong_t)rc_removed_count); 2352 2353 if (rc_count > 0) 2354 mdb_printf("current holds:\n"); 2355 if (mdb_ctf_offsetof(rc_id, "rc_list", &off) == -1) 2356 return (DCMD_ERR); 2357 rc_list = addr + off/NBBY; 2358 mdb_pwalk("list", reference_cb, (void*)B_FALSE, rc_list); 2359 2360 if (rc_removed_count > 0) 2361 mdb_printf("released holds:\n"); 2362 if (mdb_ctf_offsetof(rc_id, "rc_removed", &off) == -1) 2363 return (DCMD_ERR); 2364 rc_removed = addr + off/NBBY; 2365 mdb_pwalk("list", reference_cb, (void*)B_TRUE, rc_removed); 2366 2367 return (DCMD_OK); 2368 } 2369 2370 /* ARGSUSED */ 2371 static int 2372 sa_attr_table(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 2373 { 2374 sa_attr_table_t *table; 2375 sa_os_t sa_os; 2376 char *name; 2377 int i; 2378 2379 if (mdb_vread(&sa_os, sizeof (sa_os_t), addr) == -1) { 2380 mdb_warn("failed to read sa_os at %p", addr); 2381 return (DCMD_ERR); 2382 } 2383 2384 table = mdb_alloc(sizeof (sa_attr_table_t) * sa_os.sa_num_attrs, 2385 UM_SLEEP | UM_GC); 2386 name = mdb_alloc(MAXPATHLEN, UM_SLEEP | UM_GC); 2387 2388 if (mdb_vread(table, sizeof (sa_attr_table_t) * sa_os.sa_num_attrs, 2389 (uintptr_t)sa_os.sa_attr_table) == -1) { 2390 mdb_warn("failed to read sa_os at %p", addr); 2391 return (DCMD_ERR); 2392 } 2393 2394 mdb_printf("%<u>%-10s %-10s %-10s %-10s %s%</u>\n", 2395 "ATTR ID", "REGISTERED", "LENGTH", "BSWAP", "NAME"); 2396 for (i = 0; i != sa_os.sa_num_attrs; i++) { 2397 mdb_readstr(name, MAXPATHLEN, (uintptr_t)table[i].sa_name); 2398 mdb_printf("%5x %8x %8x %8x %-s\n", 2399 (int)table[i].sa_attr, (int)table[i].sa_registered, 2400 (int)table[i].sa_length, table[i].sa_byteswap, name); 2401 } 2402 2403 return (DCMD_OK); 2404 } 2405 2406 static int 2407 sa_get_off_table(uintptr_t addr, uint32_t **off_tab, int attr_count) 2408 { 2409 uintptr_t idx_table; 2410 2411 if (GETMEMB(addr, struct sa_idx_tab, sa_idx_tab, idx_table)) { 2412 mdb_printf("can't find offset table in sa_idx_tab\n"); 2413 return (-1); 2414 } 2415 2416 *off_tab = mdb_alloc(attr_count * sizeof (uint32_t), 2417 UM_SLEEP | UM_GC); 2418 2419 if (mdb_vread(*off_tab, 2420 attr_count * sizeof (uint32_t), idx_table) == -1) { 2421 mdb_warn("failed to attribute offset table %p", idx_table); 2422 return (-1); 2423 } 2424 2425 return (DCMD_OK); 2426 } 2427 2428 /*ARGSUSED*/ 2429 static int 2430 sa_attr_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 2431 { 2432 uint32_t *offset_tab; 2433 int attr_count; 2434 uint64_t attr_id; 2435 uintptr_t attr_addr; 2436 uintptr_t bonus_tab, spill_tab; 2437 uintptr_t db_bonus, db_spill; 2438 uintptr_t os, os_sa; 2439 uintptr_t db_data; 2440 2441 if (argc != 1) 2442 return (DCMD_USAGE); 2443 2444 if (argv[0].a_type == MDB_TYPE_STRING) 2445 attr_id = mdb_strtoull(argv[0].a_un.a_str); 2446 else 2447 return (DCMD_USAGE); 2448 2449 if (GETMEMB(addr, struct sa_handle, sa_bonus_tab, bonus_tab) || 2450 GETMEMB(addr, struct sa_handle, sa_spill_tab, spill_tab) || 2451 GETMEMB(addr, struct sa_handle, sa_os, os) || 2452 GETMEMB(addr, struct sa_handle, sa_bonus, db_bonus) || 2453 GETMEMB(addr, struct sa_handle, sa_spill, db_spill)) { 2454 mdb_printf("Can't find necessary information in sa_handle " 2455 "in sa_handle\n"); 2456 return (DCMD_ERR); 2457 } 2458 2459 if (GETMEMB(os, struct objset, os_sa, os_sa)) { 2460 mdb_printf("Can't find os_sa in objset\n"); 2461 return (DCMD_ERR); 2462 } 2463 2464 if (GETMEMB(os_sa, struct sa_os, sa_num_attrs, attr_count)) { 2465 mdb_printf("Can't find sa_num_attrs\n"); 2466 return (DCMD_ERR); 2467 } 2468 2469 if (attr_id > attr_count) { 2470 mdb_printf("attribute id number is out of range\n"); 2471 return (DCMD_ERR); 2472 } 2473 2474 if (bonus_tab) { 2475 if (sa_get_off_table(bonus_tab, &offset_tab, 2476 attr_count) == -1) { 2477 return (DCMD_ERR); 2478 } 2479 2480 if (GETMEMB(db_bonus, struct dmu_buf, db_data, db_data)) { 2481 mdb_printf("can't find db_data in bonus dbuf\n"); 2482 return (DCMD_ERR); 2483 } 2484 } 2485 2486 if (bonus_tab && !TOC_ATTR_PRESENT(offset_tab[attr_id]) && 2487 spill_tab == NULL) { 2488 mdb_printf("Attribute does not exist\n"); 2489 return (DCMD_ERR); 2490 } else if (!TOC_ATTR_PRESENT(offset_tab[attr_id]) && spill_tab) { 2491 if (sa_get_off_table(spill_tab, &offset_tab, 2492 attr_count) == -1) { 2493 return (DCMD_ERR); 2494 } 2495 if (GETMEMB(db_spill, struct dmu_buf, db_data, db_data)) { 2496 mdb_printf("can't find db_data in spill dbuf\n"); 2497 return (DCMD_ERR); 2498 } 2499 if (!TOC_ATTR_PRESENT(offset_tab[attr_id])) { 2500 mdb_printf("Attribute does not exist\n"); 2501 return (DCMD_ERR); 2502 } 2503 } 2504 attr_addr = db_data + TOC_OFF(offset_tab[attr_id]); 2505 mdb_printf("%p\n", attr_addr); 2506 return (DCMD_OK); 2507 } 2508 2509 /* ARGSUSED */ 2510 static int 2511 zfs_ace_print_common(uintptr_t addr, uint_t flags, 2512 uint64_t id, uint32_t access_mask, uint16_t ace_flags, 2513 uint16_t ace_type, int verbose) 2514 { 2515 if (DCMD_HDRSPEC(flags) && !verbose) 2516 mdb_printf("%<u>%-?s %-8s %-8s %-8s %s%</u>\n", 2517 "ADDR", "FLAGS", "MASK", "TYPE", "ID"); 2518 2519 if (!verbose) { 2520 mdb_printf("%0?p %-8x %-8x %-8x %-llx\n", addr, 2521 ace_flags, access_mask, ace_type, id); 2522 return (DCMD_OK); 2523 } 2524 2525 switch (ace_flags & ACE_TYPE_FLAGS) { 2526 case ACE_OWNER: 2527 mdb_printf("owner@:"); 2528 break; 2529 case (ACE_IDENTIFIER_GROUP | ACE_GROUP): 2530 mdb_printf("group@:"); 2531 break; 2532 case ACE_EVERYONE: 2533 mdb_printf("everyone@:"); 2534 break; 2535 case ACE_IDENTIFIER_GROUP: 2536 mdb_printf("group:%llx:", (u_longlong_t)id); 2537 break; 2538 case 0: /* User entry */ 2539 mdb_printf("user:%llx:", (u_longlong_t)id); 2540 break; 2541 } 2542 2543 /* print out permission mask */ 2544 if (access_mask & ACE_READ_DATA) 2545 mdb_printf("r"); 2546 else 2547 mdb_printf("-"); 2548 if (access_mask & ACE_WRITE_DATA) 2549 mdb_printf("w"); 2550 else 2551 mdb_printf("-"); 2552 if (access_mask & ACE_EXECUTE) 2553 mdb_printf("x"); 2554 else 2555 mdb_printf("-"); 2556 if (access_mask & ACE_APPEND_DATA) 2557 mdb_printf("p"); 2558 else 2559 mdb_printf("-"); 2560 if (access_mask & ACE_DELETE) 2561 mdb_printf("d"); 2562 else 2563 mdb_printf("-"); 2564 if (access_mask & ACE_DELETE_CHILD) 2565 mdb_printf("D"); 2566 else 2567 mdb_printf("-"); 2568 if (access_mask & ACE_READ_ATTRIBUTES) 2569 mdb_printf("a"); 2570 else 2571 mdb_printf("-"); 2572 if (access_mask & ACE_WRITE_ATTRIBUTES) 2573 mdb_printf("A"); 2574 else 2575 mdb_printf("-"); 2576 if (access_mask & ACE_READ_NAMED_ATTRS) 2577 mdb_printf("R"); 2578 else 2579 mdb_printf("-"); 2580 if (access_mask & ACE_WRITE_NAMED_ATTRS) 2581 mdb_printf("W"); 2582 else 2583 mdb_printf("-"); 2584 if (access_mask & ACE_READ_ACL) 2585 mdb_printf("c"); 2586 else 2587 mdb_printf("-"); 2588 if (access_mask & ACE_WRITE_ACL) 2589 mdb_printf("C"); 2590 else 2591 mdb_printf("-"); 2592 if (access_mask & ACE_WRITE_OWNER) 2593 mdb_printf("o"); 2594 else 2595 mdb_printf("-"); 2596 if (access_mask & ACE_SYNCHRONIZE) 2597 mdb_printf("s"); 2598 else 2599 mdb_printf("-"); 2600 2601 mdb_printf(":"); 2602 2603 /* Print out inheritance flags */ 2604 if (ace_flags & ACE_FILE_INHERIT_ACE) 2605 mdb_printf("f"); 2606 else 2607 mdb_printf("-"); 2608 if (ace_flags & ACE_DIRECTORY_INHERIT_ACE) 2609 mdb_printf("d"); 2610 else 2611 mdb_printf("-"); 2612 if (ace_flags & ACE_INHERIT_ONLY_ACE) 2613 mdb_printf("i"); 2614 else 2615 mdb_printf("-"); 2616 if (ace_flags & ACE_NO_PROPAGATE_INHERIT_ACE) 2617 mdb_printf("n"); 2618 else 2619 mdb_printf("-"); 2620 if (ace_flags & ACE_SUCCESSFUL_ACCESS_ACE_FLAG) 2621 mdb_printf("S"); 2622 else 2623 mdb_printf("-"); 2624 if (ace_flags & ACE_FAILED_ACCESS_ACE_FLAG) 2625 mdb_printf("F"); 2626 else 2627 mdb_printf("-"); 2628 if (ace_flags & ACE_INHERITED_ACE) 2629 mdb_printf("I"); 2630 else 2631 mdb_printf("-"); 2632 2633 switch (ace_type) { 2634 case ACE_ACCESS_ALLOWED_ACE_TYPE: 2635 mdb_printf(":allow\n"); 2636 break; 2637 case ACE_ACCESS_DENIED_ACE_TYPE: 2638 mdb_printf(":deny\n"); 2639 break; 2640 case ACE_SYSTEM_AUDIT_ACE_TYPE: 2641 mdb_printf(":audit\n"); 2642 break; 2643 case ACE_SYSTEM_ALARM_ACE_TYPE: 2644 mdb_printf(":alarm\n"); 2645 break; 2646 default: 2647 mdb_printf(":?\n"); 2648 } 2649 return (DCMD_OK); 2650 } 2651 2652 /* ARGSUSED */ 2653 static int 2654 zfs_ace_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 2655 { 2656 zfs_ace_t zace; 2657 int verbose = FALSE; 2658 uint64_t id; 2659 2660 if (!(flags & DCMD_ADDRSPEC)) 2661 return (DCMD_USAGE); 2662 2663 if (mdb_getopts(argc, argv, 2664 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc) 2665 return (DCMD_USAGE); 2666 2667 if (mdb_vread(&zace, sizeof (zfs_ace_t), addr) == -1) { 2668 mdb_warn("failed to read zfs_ace_t"); 2669 return (DCMD_ERR); 2670 } 2671 2672 if ((zace.z_hdr.z_flags & ACE_TYPE_FLAGS) == 0 || 2673 (zace.z_hdr.z_flags & ACE_TYPE_FLAGS) == ACE_IDENTIFIER_GROUP) 2674 id = zace.z_fuid; 2675 else 2676 id = -1; 2677 2678 return (zfs_ace_print_common(addr, flags, id, zace.z_hdr.z_access_mask, 2679 zace.z_hdr.z_flags, zace.z_hdr.z_type, verbose)); 2680 } 2681 2682 /* ARGSUSED */ 2683 static int 2684 zfs_ace0_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 2685 { 2686 ace_t ace; 2687 uint64_t id; 2688 int verbose = FALSE; 2689 2690 if (!(flags & DCMD_ADDRSPEC)) 2691 return (DCMD_USAGE); 2692 2693 if (mdb_getopts(argc, argv, 2694 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc) 2695 return (DCMD_USAGE); 2696 2697 if (mdb_vread(&ace, sizeof (ace_t), addr) == -1) { 2698 mdb_warn("failed to read ace_t"); 2699 return (DCMD_ERR); 2700 } 2701 2702 if ((ace.a_flags & ACE_TYPE_FLAGS) == 0 || 2703 (ace.a_flags & ACE_TYPE_FLAGS) == ACE_IDENTIFIER_GROUP) 2704 id = ace.a_who; 2705 else 2706 id = -1; 2707 2708 return (zfs_ace_print_common(addr, flags, id, ace.a_access_mask, 2709 ace.a_flags, ace.a_type, verbose)); 2710 } 2711 2712 typedef struct acl_dump_args { 2713 int a_argc; 2714 const mdb_arg_t *a_argv; 2715 uint16_t a_version; 2716 int a_flags; 2717 } acl_dump_args_t; 2718 2719 /* ARGSUSED */ 2720 static int 2721 acl_aces_cb(uintptr_t addr, const void *unknown, void *arg) 2722 { 2723 acl_dump_args_t *acl_args = (acl_dump_args_t *)arg; 2724 2725 if (acl_args->a_version == 1) { 2726 if (mdb_call_dcmd("zfs_ace", addr, 2727 DCMD_ADDRSPEC|acl_args->a_flags, acl_args->a_argc, 2728 acl_args->a_argv) != DCMD_OK) { 2729 return (WALK_ERR); 2730 } 2731 } else { 2732 if (mdb_call_dcmd("zfs_ace0", addr, 2733 DCMD_ADDRSPEC|acl_args->a_flags, acl_args->a_argc, 2734 acl_args->a_argv) != DCMD_OK) { 2735 return (WALK_ERR); 2736 } 2737 } 2738 acl_args->a_flags = DCMD_LOOP; 2739 return (WALK_NEXT); 2740 } 2741 2742 /* ARGSUSED */ 2743 static int 2744 acl_cb(uintptr_t addr, const void *unknown, void *arg) 2745 { 2746 acl_dump_args_t *acl_args = (acl_dump_args_t *)arg; 2747 2748 if (acl_args->a_version == 1) { 2749 if (mdb_pwalk("zfs_acl_node_aces", acl_aces_cb, 2750 arg, addr) != 0) { 2751 mdb_warn("can't walk ACEs"); 2752 return (DCMD_ERR); 2753 } 2754 } else { 2755 if (mdb_pwalk("zfs_acl_node_aces0", acl_aces_cb, 2756 arg, addr) != 0) { 2757 mdb_warn("can't walk ACEs"); 2758 return (DCMD_ERR); 2759 } 2760 } 2761 return (WALK_NEXT); 2762 } 2763 2764 /* ARGSUSED */ 2765 static int 2766 zfs_acl_dump(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 2767 { 2768 zfs_acl_t zacl; 2769 int verbose = FALSE; 2770 acl_dump_args_t acl_args; 2771 2772 if (!(flags & DCMD_ADDRSPEC)) 2773 return (DCMD_USAGE); 2774 2775 if (mdb_getopts(argc, argv, 2776 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc) 2777 return (DCMD_USAGE); 2778 2779 if (mdb_vread(&zacl, sizeof (zfs_acl_t), addr) == -1) { 2780 mdb_warn("failed to read zfs_acl_t"); 2781 return (DCMD_ERR); 2782 } 2783 2784 acl_args.a_argc = argc; 2785 acl_args.a_argv = argv; 2786 acl_args.a_version = zacl.z_version; 2787 acl_args.a_flags = DCMD_LOOPFIRST; 2788 2789 if (mdb_pwalk("zfs_acl_node", acl_cb, &acl_args, addr) != 0) { 2790 mdb_warn("can't walk ACL"); 2791 return (DCMD_ERR); 2792 } 2793 2794 return (DCMD_OK); 2795 } 2796 2797 /* ARGSUSED */ 2798 static int 2799 zfs_acl_node_walk_init(mdb_walk_state_t *wsp) 2800 { 2801 if (wsp->walk_addr == NULL) { 2802 mdb_warn("must supply address of zfs_acl_node_t\n"); 2803 return (WALK_ERR); 2804 } 2805 2806 wsp->walk_addr += OFFSETOF(zfs_acl_t, z_acl); 2807 2808 if (mdb_layered_walk("list", wsp) == -1) { 2809 mdb_warn("failed to walk 'list'\n"); 2810 return (WALK_ERR); 2811 } 2812 2813 return (WALK_NEXT); 2814 } 2815 2816 static int 2817 zfs_acl_node_walk_step(mdb_walk_state_t *wsp) 2818 { 2819 zfs_acl_node_t aclnode; 2820 2821 if (mdb_vread(&aclnode, sizeof (zfs_acl_node_t), 2822 wsp->walk_addr) == -1) { 2823 mdb_warn("failed to read zfs_acl_node at %p", wsp->walk_addr); 2824 return (WALK_ERR); 2825 } 2826 2827 return (wsp->walk_callback(wsp->walk_addr, &aclnode, wsp->walk_cbdata)); 2828 } 2829 2830 typedef struct ace_walk_data { 2831 int ace_count; 2832 int ace_version; 2833 } ace_walk_data_t; 2834 2835 static int 2836 zfs_aces_walk_init_common(mdb_walk_state_t *wsp, int version, 2837 int ace_count, uintptr_t ace_data) 2838 { 2839 ace_walk_data_t *ace_walk_data; 2840 2841 if (wsp->walk_addr == NULL) { 2842 mdb_warn("must supply address of zfs_acl_node_t\n"); 2843 return (WALK_ERR); 2844 } 2845 2846 ace_walk_data = mdb_alloc(sizeof (ace_walk_data_t), UM_SLEEP | UM_GC); 2847 2848 ace_walk_data->ace_count = ace_count; 2849 ace_walk_data->ace_version = version; 2850 2851 wsp->walk_addr = ace_data; 2852 wsp->walk_data = ace_walk_data; 2853 2854 return (WALK_NEXT); 2855 } 2856 2857 static int 2858 zfs_acl_node_aces_walk_init_common(mdb_walk_state_t *wsp, int version) 2859 { 2860 static int gotid; 2861 static mdb_ctf_id_t acl_id; 2862 int z_ace_count; 2863 uintptr_t z_acldata; 2864 2865 if (!gotid) { 2866 if (mdb_ctf_lookup_by_name("struct zfs_acl_node", 2867 &acl_id) == -1) { 2868 mdb_warn("couldn't find struct zfs_acl_node"); 2869 return (DCMD_ERR); 2870 } 2871 gotid = TRUE; 2872 } 2873 2874 if (GETMEMBID(wsp->walk_addr, &acl_id, z_ace_count, z_ace_count)) { 2875 return (DCMD_ERR); 2876 } 2877 if (GETMEMBID(wsp->walk_addr, &acl_id, z_acldata, z_acldata)) { 2878 return (DCMD_ERR); 2879 } 2880 2881 return (zfs_aces_walk_init_common(wsp, version, 2882 z_ace_count, z_acldata)); 2883 } 2884 2885 /* ARGSUSED */ 2886 static int 2887 zfs_acl_node_aces_walk_init(mdb_walk_state_t *wsp) 2888 { 2889 return (zfs_acl_node_aces_walk_init_common(wsp, 1)); 2890 } 2891 2892 /* ARGSUSED */ 2893 static int 2894 zfs_acl_node_aces0_walk_init(mdb_walk_state_t *wsp) 2895 { 2896 return (zfs_acl_node_aces_walk_init_common(wsp, 0)); 2897 } 2898 2899 static int 2900 zfs_aces_walk_step(mdb_walk_state_t *wsp) 2901 { 2902 ace_walk_data_t *ace_data = wsp->walk_data; 2903 zfs_ace_t zace; 2904 ace_t *acep; 2905 int status; 2906 int entry_type; 2907 int allow_type; 2908 uintptr_t ptr; 2909 2910 if (ace_data->ace_count == 0) 2911 return (WALK_DONE); 2912 2913 if (mdb_vread(&zace, sizeof (zfs_ace_t), wsp->walk_addr) == -1) { 2914 mdb_warn("failed to read zfs_ace_t at %#lx", 2915 wsp->walk_addr); 2916 return (WALK_ERR); 2917 } 2918 2919 switch (ace_data->ace_version) { 2920 case 0: 2921 acep = (ace_t *)&zace; 2922 entry_type = acep->a_flags & ACE_TYPE_FLAGS; 2923 allow_type = acep->a_type; 2924 break; 2925 case 1: 2926 entry_type = zace.z_hdr.z_flags & ACE_TYPE_FLAGS; 2927 allow_type = zace.z_hdr.z_type; 2928 break; 2929 default: 2930 return (WALK_ERR); 2931 } 2932 2933 ptr = (uintptr_t)wsp->walk_addr; 2934 switch (entry_type) { 2935 case ACE_OWNER: 2936 case ACE_EVERYONE: 2937 case (ACE_IDENTIFIER_GROUP | ACE_GROUP): 2938 ptr += ace_data->ace_version == 0 ? 2939 sizeof (ace_t) : sizeof (zfs_ace_hdr_t); 2940 break; 2941 case ACE_IDENTIFIER_GROUP: 2942 default: 2943 switch (allow_type) { 2944 case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: 2945 case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: 2946 case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: 2947 case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: 2948 ptr += ace_data->ace_version == 0 ? 2949 sizeof (ace_t) : sizeof (zfs_object_ace_t); 2950 break; 2951 default: 2952 ptr += ace_data->ace_version == 0 ? 2953 sizeof (ace_t) : sizeof (zfs_ace_t); 2954 break; 2955 } 2956 } 2957 2958 ace_data->ace_count--; 2959 status = wsp->walk_callback(wsp->walk_addr, 2960 (void *)(uintptr_t)&zace, wsp->walk_cbdata); 2961 2962 wsp->walk_addr = ptr; 2963 return (status); 2964 } 2965 2966 /* 2967 * MDB module linkage information: 2968 * 2969 * We declare a list of structures describing our dcmds, and a function 2970 * named _mdb_init to return a pointer to our module information. 2971 */ 2972 2973 static const mdb_dcmd_t dcmds[] = { 2974 { "arc", "[-bkmg]", "print ARC variables", arc_print }, 2975 { "blkptr", ":", "print blkptr_t", blkptr }, 2976 { "dbuf", ":", "print dmu_buf_impl_t", dbuf }, 2977 { "dbuf_stats", ":", "dbuf stats", dbuf_stats }, 2978 { "dbufs", 2979 "\t[-O objset_t*] [-n objset_name | \"mos\"] " 2980 "[-o object | \"mdn\"] \n" 2981 "\t[-l level] [-b blkid | \"bonus\"]", 2982 "find dmu_buf_impl_t's that match specified criteria", dbufs }, 2983 { "abuf_find", "dva_word[0] dva_word[1]", 2984 "find arc_buf_hdr_t of a specified DVA", 2985 abuf_find }, 2986 { "spa", "?[-cv]", "spa_t summary", spa_print }, 2987 { "spa_config", ":", "print spa_t configuration", spa_print_config }, 2988 { "spa_verify", ":", "verify spa_t consistency", spa_verify }, 2989 { "spa_space", ":[-b]", "print spa_t on-disk space usage", spa_space }, 2990 { "spa_vdevs", ":", "given a spa_t, print vdev summary", spa_vdevs }, 2991 { "vdev", ":[-re]\n" 2992 "\t-r display recursively\n" 2993 "\t-e print statistics", 2994 "vdev_t summary", vdev_print }, 2995 { "zio", ":[cpr]\n" 2996 "\t-c display children\n" 2997 "\t-p display parents\n" 2998 "\t-r display recursively", 2999 "zio_t summary", zio_print }, 3000 { "zio_state", "?", "print out all zio_t structures on system or " 3001 "for a particular pool", zio_state }, 3002 { "zfs_blkstats", ":[-v]", 3003 "given a spa_t, print block type stats from last scrub", 3004 zfs_blkstats }, 3005 { "zfs_params", "", "print zfs tunable parameters", zfs_params }, 3006 { "refcount", "", "print refcount_t holders", refcount }, 3007 { "zap_leaf", "", "print zap_leaf_phys_t", zap_leaf }, 3008 { "zfs_aces", ":[-v]", "print all ACEs from a zfs_acl_t", 3009 zfs_acl_dump }, 3010 { "zfs_ace", ":[-v]", "print zfs_ace", zfs_ace_print }, 3011 { "zfs_ace0", ":[-v]", "print zfs_ace0", zfs_ace0_print }, 3012 { "sa_attr_table", ":", "print SA attribute table from sa_os_t", 3013 sa_attr_table}, 3014 { "sa_attr", ": attr_id", 3015 "print SA attribute address when given sa_handle_t", sa_attr_print}, 3016 { "zfs_dbgmsg", ":[-v]", 3017 "print zfs debug log", dbgmsg}, 3018 { NULL } 3019 }; 3020 3021 static const mdb_walker_t walkers[] = { 3022 /* 3023 * In userland, there is no generic provider of list_t walkers, so we 3024 * need to add it. 3025 */ 3026 #ifndef _KERNEL 3027 { LIST_WALK_NAME, LIST_WALK_DESC, 3028 list_walk_init, list_walk_step, list_walk_fini }, 3029 #endif 3030 { "zms_freelist", "walk ZFS metaslab freelist", 3031 freelist_walk_init, freelist_walk_step, NULL }, 3032 { "txg_list", "given any txg_list_t *, walk all entries in all txgs", 3033 txg_list_walk_init, txg_list_walk_step, NULL }, 3034 { "txg_list0", "given any txg_list_t *, walk all entries in txg 0", 3035 txg_list0_walk_init, txg_list_walk_step, NULL }, 3036 { "txg_list1", "given any txg_list_t *, walk all entries in txg 1", 3037 txg_list1_walk_init, txg_list_walk_step, NULL }, 3038 { "txg_list2", "given any txg_list_t *, walk all entries in txg 2", 3039 txg_list2_walk_init, txg_list_walk_step, NULL }, 3040 { "txg_list3", "given any txg_list_t *, walk all entries in txg 3", 3041 txg_list3_walk_init, txg_list_walk_step, NULL }, 3042 { "zio", "walk all zio structures, optionally for a particular spa_t", 3043 zio_walk_init, zio_walk_step, NULL }, 3044 { "zio_root", "walk all root zio_t structures, optionally for a " 3045 "particular spa_t", 3046 zio_walk_init, zio_walk_root_step, NULL }, 3047 { "spa", "walk all spa_t entries in the namespace", 3048 spa_walk_init, spa_walk_step, NULL }, 3049 { "metaslab", "given a spa_t *, walk all metaslab_t structures", 3050 metaslab_walk_init, metaslab_walk_step, NULL }, 3051 { "zfs_acl_node", "given a zfs_acl_t, walk all zfs_acl_nodes", 3052 zfs_acl_node_walk_init, zfs_acl_node_walk_step, NULL }, 3053 { "zfs_acl_node_aces", "given a zfs_acl_node_t, walk all ACEs", 3054 zfs_acl_node_aces_walk_init, zfs_aces_walk_step, NULL }, 3055 { "zfs_acl_node_aces0", 3056 "given a zfs_acl_node_t, walk all ACEs as ace_t", 3057 zfs_acl_node_aces0_walk_init, zfs_aces_walk_step, NULL }, 3058 { NULL } 3059 }; 3060 3061 static const mdb_modinfo_t modinfo = { 3062 MDB_API_VERSION, dcmds, walkers 3063 }; 3064 3065 const mdb_modinfo_t * 3066 _mdb_init(void) 3067 { 3068 return (&modinfo); 3069 } 3070