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