1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2011, 2016 by Delphix. All rights reserved. 25 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 26 * Copyright (c) 2014 Integros [integros.com] 27 * Copyright 2017 Joyent, Inc. 28 * Copyright (c) 2017 Datto Inc. 29 * Copyright (c) 2017, Intel Corporation. 30 */ 31 32 /* Portions Copyright 2010 Robert Milkowski */ 33 34 #ifndef _SYS_FS_ZFS_H 35 #define _SYS_FS_ZFS_H 36 37 #include <sys/time.h> 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 /* 44 * Types and constants shared between userland and the kernel. 45 */ 46 47 /* 48 * Each dataset can be one of the following types. These constants can be 49 * combined into masks that can be passed to various functions. 50 */ 51 typedef enum { 52 ZFS_TYPE_FILESYSTEM = (1 << 0), 53 ZFS_TYPE_SNAPSHOT = (1 << 1), 54 ZFS_TYPE_VOLUME = (1 << 2), 55 ZFS_TYPE_POOL = (1 << 3), 56 ZFS_TYPE_BOOKMARK = (1 << 4) 57 } zfs_type_t; 58 59 /* 60 * NB: lzc_dataset_type should be updated whenever a new objset type is added, 61 * if it represents a real type of a dataset that can be created from userland. 62 */ 63 typedef enum dmu_objset_type { 64 DMU_OST_NONE, 65 DMU_OST_META, 66 DMU_OST_ZFS, 67 DMU_OST_ZVOL, 68 DMU_OST_OTHER, /* For testing only! */ 69 DMU_OST_ANY, /* Be careful! */ 70 DMU_OST_NUMTYPES 71 } dmu_objset_type_t; 72 73 #define ZFS_TYPE_DATASET \ 74 (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT) 75 76 /* 77 * All of these include the terminating NUL byte. 78 */ 79 #define ZAP_MAXNAMELEN 256 80 #define ZAP_MAXVALUELEN (1024 * 8) 81 #define ZAP_OLDMAXVALUELEN 1024 82 #define ZFS_MAX_DATASET_NAME_LEN 256 83 84 /* 85 * Dataset properties are identified by these constants and must be added to 86 * the end of this list to ensure that external consumers are not affected 87 * by the change. If you make any changes to this list, be sure to update 88 * the property table in usr/src/common/zfs/zfs_prop.c. 89 */ 90 typedef enum { 91 ZPROP_CONT = -2, 92 ZPROP_INVAL = -1, 93 ZFS_PROP_TYPE = 0, 94 ZFS_PROP_CREATION, 95 ZFS_PROP_USED, 96 ZFS_PROP_AVAILABLE, 97 ZFS_PROP_REFERENCED, 98 ZFS_PROP_COMPRESSRATIO, 99 ZFS_PROP_MOUNTED, 100 ZFS_PROP_ORIGIN, 101 ZFS_PROP_QUOTA, 102 ZFS_PROP_RESERVATION, 103 ZFS_PROP_VOLSIZE, 104 ZFS_PROP_VOLBLOCKSIZE, 105 ZFS_PROP_RECORDSIZE, 106 ZFS_PROP_MOUNTPOINT, 107 ZFS_PROP_SHARENFS, 108 ZFS_PROP_CHECKSUM, 109 ZFS_PROP_COMPRESSION, 110 ZFS_PROP_ATIME, 111 ZFS_PROP_DEVICES, 112 ZFS_PROP_EXEC, 113 ZFS_PROP_SETUID, 114 ZFS_PROP_READONLY, 115 ZFS_PROP_ZONED, 116 ZFS_PROP_SNAPDIR, 117 ZFS_PROP_ACLMODE, 118 ZFS_PROP_ACLINHERIT, 119 ZFS_PROP_CREATETXG, 120 ZFS_PROP_NAME, /* not exposed to the user */ 121 ZFS_PROP_CANMOUNT, 122 ZFS_PROP_ISCSIOPTIONS, /* not exposed to the user */ 123 ZFS_PROP_XATTR, 124 ZFS_PROP_NUMCLONES, /* not exposed to the user */ 125 ZFS_PROP_COPIES, 126 ZFS_PROP_VERSION, 127 ZFS_PROP_UTF8ONLY, 128 ZFS_PROP_NORMALIZE, 129 ZFS_PROP_CASE, 130 ZFS_PROP_VSCAN, 131 ZFS_PROP_NBMAND, 132 ZFS_PROP_SHARESMB, 133 ZFS_PROP_REFQUOTA, 134 ZFS_PROP_REFRESERVATION, 135 ZFS_PROP_GUID, 136 ZFS_PROP_PRIMARYCACHE, 137 ZFS_PROP_SECONDARYCACHE, 138 ZFS_PROP_USEDSNAP, 139 ZFS_PROP_USEDDS, 140 ZFS_PROP_USEDCHILD, 141 ZFS_PROP_USEDREFRESERV, 142 ZFS_PROP_USERACCOUNTING, /* not exposed to the user */ 143 ZFS_PROP_STMF_SHAREINFO, /* not exposed to the user */ 144 ZFS_PROP_DEFER_DESTROY, 145 ZFS_PROP_USERREFS, 146 ZFS_PROP_LOGBIAS, 147 ZFS_PROP_UNIQUE, /* not exposed to the user */ 148 ZFS_PROP_OBJSETID, /* not exposed to the user */ 149 ZFS_PROP_DEDUP, 150 ZFS_PROP_MLSLABEL, 151 ZFS_PROP_SYNC, 152 ZFS_PROP_DNODESIZE, 153 ZFS_PROP_REFRATIO, 154 ZFS_PROP_WRITTEN, 155 ZFS_PROP_CLONES, 156 ZFS_PROP_LOGICALUSED, 157 ZFS_PROP_LOGICALREFERENCED, 158 ZFS_PROP_INCONSISTENT, /* not exposed to the user */ 159 ZFS_PROP_FILESYSTEM_LIMIT, 160 ZFS_PROP_SNAPSHOT_LIMIT, 161 ZFS_PROP_FILESYSTEM_COUNT, 162 ZFS_PROP_SNAPSHOT_COUNT, 163 ZFS_PROP_REDUNDANT_METADATA, 164 ZFS_PROP_PREV_SNAP, 165 ZFS_PROP_RECEIVE_RESUME_TOKEN, 166 ZFS_PROP_REMAPTXG, /* not exposed to the user */ 167 ZFS_PROP_SPECIAL_SMALL_BLOCKS, 168 ZFS_PROP_ENCRYPTION, 169 ZFS_PROP_KEYLOCATION, 170 ZFS_PROP_KEYFORMAT, 171 ZFS_PROP_PBKDF2_SALT, 172 ZFS_PROP_PBKDF2_ITERS, 173 ZFS_PROP_ENCRYPTION_ROOT, 174 ZFS_PROP_KEY_GUID, 175 ZFS_PROP_KEYSTATUS, 176 ZFS_PROP_IVSET_GUID, /* not exposed to the user */ 177 ZFS_NUM_PROPS 178 } zfs_prop_t; 179 180 typedef enum { 181 ZFS_PROP_USERUSED, 182 ZFS_PROP_USERQUOTA, 183 ZFS_PROP_GROUPUSED, 184 ZFS_PROP_GROUPQUOTA, 185 ZFS_PROP_USEROBJUSED, 186 ZFS_PROP_USEROBJQUOTA, 187 ZFS_PROP_GROUPOBJUSED, 188 ZFS_PROP_GROUPOBJQUOTA, 189 ZFS_PROP_PROJECTUSED, 190 ZFS_PROP_PROJECTQUOTA, 191 ZFS_PROP_PROJECTOBJUSED, 192 ZFS_PROP_PROJECTOBJQUOTA, 193 ZFS_NUM_USERQUOTA_PROPS 194 } zfs_userquota_prop_t; 195 196 extern const char *zfs_userquota_prop_prefixes[ZFS_NUM_USERQUOTA_PROPS]; 197 198 /* 199 * Pool properties are identified by these constants and must be added to the 200 * end of this list to ensure that external consumers are not affected 201 * by the change. If you make any changes to this list, be sure to update 202 * the property table in usr/src/common/zfs/zpool_prop.c. 203 */ 204 typedef enum { 205 ZPOOL_PROP_INVAL = -1, 206 ZPOOL_PROP_NAME, 207 ZPOOL_PROP_SIZE, 208 ZPOOL_PROP_CAPACITY, 209 ZPOOL_PROP_ALTROOT, 210 ZPOOL_PROP_HEALTH, 211 ZPOOL_PROP_GUID, 212 ZPOOL_PROP_VERSION, 213 ZPOOL_PROP_BOOTFS, 214 ZPOOL_PROP_DELEGATION, 215 ZPOOL_PROP_AUTOREPLACE, 216 ZPOOL_PROP_CACHEFILE, 217 ZPOOL_PROP_FAILUREMODE, 218 ZPOOL_PROP_LISTSNAPS, 219 ZPOOL_PROP_AUTOEXPAND, 220 ZPOOL_PROP_DEDUPDITTO, 221 ZPOOL_PROP_DEDUPRATIO, 222 ZPOOL_PROP_FREE, 223 ZPOOL_PROP_ALLOCATED, 224 ZPOOL_PROP_READONLY, 225 ZPOOL_PROP_COMMENT, 226 ZPOOL_PROP_EXPANDSZ, 227 ZPOOL_PROP_FREEING, 228 ZPOOL_PROP_FRAGMENTATION, 229 ZPOOL_PROP_LEAKED, 230 ZPOOL_PROP_MAXBLOCKSIZE, 231 ZPOOL_PROP_BOOTSIZE, 232 ZPOOL_PROP_CHECKPOINT, 233 ZPOOL_PROP_TNAME, 234 ZPOOL_PROP_MAXDNODESIZE, 235 ZPOOL_PROP_MULTIHOST, 236 ZPOOL_NUM_PROPS 237 } zpool_prop_t; 238 239 /* Small enough to not hog a whole line of printout in zpool(1M). */ 240 #define ZPROP_MAX_COMMENT 32 241 242 #define ZPROP_VALUE "value" 243 #define ZPROP_SOURCE "source" 244 245 typedef enum { 246 ZPROP_SRC_NONE = 0x1, 247 ZPROP_SRC_DEFAULT = 0x2, 248 ZPROP_SRC_TEMPORARY = 0x4, 249 ZPROP_SRC_LOCAL = 0x8, 250 ZPROP_SRC_INHERITED = 0x10, 251 ZPROP_SRC_RECEIVED = 0x20 252 } zprop_source_t; 253 254 #define ZPROP_SRC_ALL 0x3f 255 256 #define ZPROP_SOURCE_VAL_RECVD "$recvd" 257 #define ZPROP_N_MORE_ERRORS "N_MORE_ERRORS" 258 /* 259 * Dataset flag implemented as a special entry in the props zap object 260 * indicating that the dataset has received properties on or after 261 * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties 262 * just as it did in earlier versions, and thereafter, local properties are 263 * preserved. 264 */ 265 #define ZPROP_HAS_RECVD "$hasrecvd" 266 267 typedef enum { 268 ZPROP_ERR_NOCLEAR = 0x1, /* failure to clear existing props */ 269 ZPROP_ERR_NORESTORE = 0x2 /* failure to restore props on error */ 270 } zprop_errflags_t; 271 272 typedef int (*zprop_func)(int, void *); 273 274 /* 275 * Properties to be set on the root file system of a new pool 276 * are stuffed into their own nvlist, which is then included in 277 * the properties nvlist with the pool properties. 278 */ 279 #define ZPOOL_ROOTFS_PROPS "root-props-nvl" 280 281 /* 282 * Length of 'written@' and 'written#' 283 */ 284 #define ZFS_WRITTEN_PROP_PREFIX_LEN 8 285 286 /* 287 * Dataset property functions shared between libzfs and kernel. 288 */ 289 const char *zfs_prop_default_string(zfs_prop_t); 290 uint64_t zfs_prop_default_numeric(zfs_prop_t); 291 boolean_t zfs_prop_readonly(zfs_prop_t); 292 boolean_t zfs_prop_visible(zfs_prop_t prop); 293 boolean_t zfs_prop_inheritable(zfs_prop_t); 294 boolean_t zfs_prop_setonce(zfs_prop_t); 295 boolean_t zfs_prop_encryption_key_param(zfs_prop_t); 296 boolean_t zfs_prop_valid_keylocation(const char *, boolean_t); 297 const char *zfs_prop_to_name(zfs_prop_t); 298 zfs_prop_t zfs_name_to_prop(const char *); 299 boolean_t zfs_prop_user(const char *); 300 boolean_t zfs_prop_userquota(const char *); 301 boolean_t zfs_prop_written(const char *); 302 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **); 303 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *); 304 uint64_t zfs_prop_random_value(zfs_prop_t, uint64_t seed); 305 boolean_t zfs_prop_valid_for_type(int, zfs_type_t); 306 307 /* 308 * Pool property functions shared between libzfs and kernel. 309 */ 310 zpool_prop_t zpool_name_to_prop(const char *); 311 const char *zpool_prop_to_name(zpool_prop_t); 312 const char *zpool_prop_default_string(zpool_prop_t); 313 uint64_t zpool_prop_default_numeric(zpool_prop_t); 314 boolean_t zpool_prop_readonly(zpool_prop_t); 315 boolean_t zpool_prop_feature(const char *); 316 boolean_t zpool_prop_unsupported(const char *name); 317 int zpool_prop_index_to_string(zpool_prop_t, uint64_t, const char **); 318 int zpool_prop_string_to_index(zpool_prop_t, const char *, uint64_t *); 319 uint64_t zpool_prop_random_value(zpool_prop_t, uint64_t seed); 320 321 /* 322 * Definitions for the Delegation. 323 */ 324 typedef enum { 325 ZFS_DELEG_WHO_UNKNOWN = 0, 326 ZFS_DELEG_USER = 'u', 327 ZFS_DELEG_USER_SETS = 'U', 328 ZFS_DELEG_GROUP = 'g', 329 ZFS_DELEG_GROUP_SETS = 'G', 330 ZFS_DELEG_EVERYONE = 'e', 331 ZFS_DELEG_EVERYONE_SETS = 'E', 332 ZFS_DELEG_CREATE = 'c', 333 ZFS_DELEG_CREATE_SETS = 'C', 334 ZFS_DELEG_NAMED_SET = 's', 335 ZFS_DELEG_NAMED_SET_SETS = 'S' 336 } zfs_deleg_who_type_t; 337 338 typedef enum { 339 ZFS_DELEG_NONE = 0, 340 ZFS_DELEG_PERM_LOCAL = 1, 341 ZFS_DELEG_PERM_DESCENDENT = 2, 342 ZFS_DELEG_PERM_LOCALDESCENDENT = 3, 343 ZFS_DELEG_PERM_CREATE = 4 344 } zfs_deleg_inherit_t; 345 346 #define ZFS_DELEG_PERM_UID "uid" 347 #define ZFS_DELEG_PERM_GID "gid" 348 #define ZFS_DELEG_PERM_GROUPS "groups" 349 350 #define ZFS_MLSLABEL_DEFAULT "none" 351 352 #define ZFS_SMB_ACL_SRC "src" 353 #define ZFS_SMB_ACL_TARGET "target" 354 355 typedef enum { 356 ZFS_CANMOUNT_OFF = 0, 357 ZFS_CANMOUNT_ON = 1, 358 ZFS_CANMOUNT_NOAUTO = 2 359 } zfs_canmount_type_t; 360 361 typedef enum { 362 ZFS_LOGBIAS_LATENCY = 0, 363 ZFS_LOGBIAS_THROUGHPUT = 1 364 } zfs_logbias_op_t; 365 366 typedef enum zfs_share_op { 367 ZFS_SHARE_NFS = 0, 368 ZFS_UNSHARE_NFS = 1, 369 ZFS_SHARE_SMB = 2, 370 ZFS_UNSHARE_SMB = 3 371 } zfs_share_op_t; 372 373 typedef enum zfs_smb_acl_op { 374 ZFS_SMB_ACL_ADD, 375 ZFS_SMB_ACL_REMOVE, 376 ZFS_SMB_ACL_RENAME, 377 ZFS_SMB_ACL_PURGE 378 } zfs_smb_acl_op_t; 379 380 typedef enum zfs_cache_type { 381 ZFS_CACHE_NONE = 0, 382 ZFS_CACHE_METADATA = 1, 383 ZFS_CACHE_ALL = 2 384 } zfs_cache_type_t; 385 386 typedef enum { 387 ZFS_SYNC_STANDARD = 0, 388 ZFS_SYNC_ALWAYS = 1, 389 ZFS_SYNC_DISABLED = 2 390 } zfs_sync_type_t; 391 392 typedef enum { 393 ZFS_DNSIZE_LEGACY = 0, 394 ZFS_DNSIZE_AUTO = 1, 395 ZFS_DNSIZE_1K = 1024, 396 ZFS_DNSIZE_2K = 2048, 397 ZFS_DNSIZE_4K = 4096, 398 ZFS_DNSIZE_8K = 8192, 399 ZFS_DNSIZE_16K = 16384 400 } zfs_dnsize_type_t; 401 402 typedef enum { 403 ZFS_REDUNDANT_METADATA_ALL, 404 ZFS_REDUNDANT_METADATA_MOST 405 } zfs_redundant_metadata_type_t; 406 407 typedef enum zfs_keystatus { 408 ZFS_KEYSTATUS_NONE = 0, 409 ZFS_KEYSTATUS_UNAVAILABLE, 410 ZFS_KEYSTATUS_AVAILABLE 411 } zfs_keystatus_t; 412 413 typedef enum zfs_keyformat { 414 ZFS_KEYFORMAT_NONE = 0, 415 ZFS_KEYFORMAT_RAW, 416 ZFS_KEYFORMAT_HEX, 417 ZFS_KEYFORMAT_PASSPHRASE, 418 ZFS_KEYFORMAT_FORMATS 419 } zfs_keyformat_t; 420 421 typedef enum zfs_key_location { 422 ZFS_KEYLOCATION_NONE = 0, 423 ZFS_KEYLOCATION_PROMPT, 424 ZFS_KEYLOCATION_URI, 425 ZFS_KEYLOCATION_LOCATIONS 426 } zfs_keylocation_t; 427 428 #define DEFAULT_PBKDF2_ITERATIONS 350000 429 #define MIN_PBKDF2_ITERATIONS 100000 430 431 /* 432 * On-disk version number. 433 */ 434 #define SPA_VERSION_1 1ULL 435 #define SPA_VERSION_2 2ULL 436 #define SPA_VERSION_3 3ULL 437 #define SPA_VERSION_4 4ULL 438 #define SPA_VERSION_5 5ULL 439 #define SPA_VERSION_6 6ULL 440 #define SPA_VERSION_7 7ULL 441 #define SPA_VERSION_8 8ULL 442 #define SPA_VERSION_9 9ULL 443 #define SPA_VERSION_10 10ULL 444 #define SPA_VERSION_11 11ULL 445 #define SPA_VERSION_12 12ULL 446 #define SPA_VERSION_13 13ULL 447 #define SPA_VERSION_14 14ULL 448 #define SPA_VERSION_15 15ULL 449 #define SPA_VERSION_16 16ULL 450 #define SPA_VERSION_17 17ULL 451 #define SPA_VERSION_18 18ULL 452 #define SPA_VERSION_19 19ULL 453 #define SPA_VERSION_20 20ULL 454 #define SPA_VERSION_21 21ULL 455 #define SPA_VERSION_22 22ULL 456 #define SPA_VERSION_23 23ULL 457 #define SPA_VERSION_24 24ULL 458 #define SPA_VERSION_25 25ULL 459 #define SPA_VERSION_26 26ULL 460 #define SPA_VERSION_27 27ULL 461 #define SPA_VERSION_28 28ULL 462 #define SPA_VERSION_5000 5000ULL 463 464 /* 465 * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk 466 * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*}, 467 * and do the appropriate changes. Also bump the version number in 468 * usr/src/grub/capability. 469 */ 470 #define SPA_VERSION SPA_VERSION_5000 471 #define SPA_VERSION_STRING "5000" 472 473 /* 474 * Symbolic names for the changes that caused a SPA_VERSION switch. 475 * Used in the code when checking for presence or absence of a feature. 476 * Feel free to define multiple symbolic names for each version if there 477 * were multiple changes to on-disk structures during that version. 478 * 479 * NOTE: When checking the current SPA_VERSION in your code, be sure 480 * to use spa_version() since it reports the version of the 481 * last synced uberblock. Checking the in-flight version can 482 * be dangerous in some cases. 483 */ 484 #define SPA_VERSION_INITIAL SPA_VERSION_1 485 #define SPA_VERSION_DITTO_BLOCKS SPA_VERSION_2 486 #define SPA_VERSION_SPARES SPA_VERSION_3 487 #define SPA_VERSION_RAIDZ2 SPA_VERSION_3 488 #define SPA_VERSION_BPOBJ_ACCOUNT SPA_VERSION_3 489 #define SPA_VERSION_RAIDZ_DEFLATE SPA_VERSION_3 490 #define SPA_VERSION_DNODE_BYTES SPA_VERSION_3 491 #define SPA_VERSION_ZPOOL_HISTORY SPA_VERSION_4 492 #define SPA_VERSION_GZIP_COMPRESSION SPA_VERSION_5 493 #define SPA_VERSION_BOOTFS SPA_VERSION_6 494 #define SPA_VERSION_SLOGS SPA_VERSION_7 495 #define SPA_VERSION_DELEGATED_PERMS SPA_VERSION_8 496 #define SPA_VERSION_FUID SPA_VERSION_9 497 #define SPA_VERSION_REFRESERVATION SPA_VERSION_9 498 #define SPA_VERSION_REFQUOTA SPA_VERSION_9 499 #define SPA_VERSION_UNIQUE_ACCURATE SPA_VERSION_9 500 #define SPA_VERSION_L2CACHE SPA_VERSION_10 501 #define SPA_VERSION_NEXT_CLONES SPA_VERSION_11 502 #define SPA_VERSION_ORIGIN SPA_VERSION_11 503 #define SPA_VERSION_DSL_SCRUB SPA_VERSION_11 504 #define SPA_VERSION_SNAP_PROPS SPA_VERSION_12 505 #define SPA_VERSION_USED_BREAKDOWN SPA_VERSION_13 506 #define SPA_VERSION_PASSTHROUGH_X SPA_VERSION_14 507 #define SPA_VERSION_USERSPACE SPA_VERSION_15 508 #define SPA_VERSION_STMF_PROP SPA_VERSION_16 509 #define SPA_VERSION_RAIDZ3 SPA_VERSION_17 510 #define SPA_VERSION_USERREFS SPA_VERSION_18 511 #define SPA_VERSION_HOLES SPA_VERSION_19 512 #define SPA_VERSION_ZLE_COMPRESSION SPA_VERSION_20 513 #define SPA_VERSION_DEDUP SPA_VERSION_21 514 #define SPA_VERSION_RECVD_PROPS SPA_VERSION_22 515 #define SPA_VERSION_SLIM_ZIL SPA_VERSION_23 516 #define SPA_VERSION_SA SPA_VERSION_24 517 #define SPA_VERSION_SCAN SPA_VERSION_25 518 #define SPA_VERSION_DIR_CLONES SPA_VERSION_26 519 #define SPA_VERSION_DEADLISTS SPA_VERSION_26 520 #define SPA_VERSION_FAST_SNAP SPA_VERSION_27 521 #define SPA_VERSION_MULTI_REPLACE SPA_VERSION_28 522 #define SPA_VERSION_BEFORE_FEATURES SPA_VERSION_28 523 #define SPA_VERSION_FEATURES SPA_VERSION_5000 524 525 #define SPA_VERSION_IS_SUPPORTED(v) \ 526 (((v) >= SPA_VERSION_INITIAL && (v) <= SPA_VERSION_BEFORE_FEATURES) || \ 527 ((v) >= SPA_VERSION_FEATURES && (v) <= SPA_VERSION)) 528 529 /* 530 * ZPL version - rev'd whenever an incompatible on-disk format change 531 * occurs. This is independent of SPA/DMU/ZAP versioning. You must 532 * also update the version_table[] and help message in zfs_prop.c. 533 * 534 * When changing, be sure to teach GRUB how to read the new format! 535 * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*} 536 */ 537 #define ZPL_VERSION_1 1ULL 538 #define ZPL_VERSION_2 2ULL 539 #define ZPL_VERSION_3 3ULL 540 #define ZPL_VERSION_4 4ULL 541 #define ZPL_VERSION_5 5ULL 542 #define ZPL_VERSION ZPL_VERSION_5 543 #define ZPL_VERSION_STRING "5" 544 545 #define ZPL_VERSION_INITIAL ZPL_VERSION_1 546 #define ZPL_VERSION_DIRENT_TYPE ZPL_VERSION_2 547 #define ZPL_VERSION_FUID ZPL_VERSION_3 548 #define ZPL_VERSION_NORMALIZATION ZPL_VERSION_3 549 #define ZPL_VERSION_SYSATTR ZPL_VERSION_3 550 #define ZPL_VERSION_USERSPACE ZPL_VERSION_4 551 #define ZPL_VERSION_SA ZPL_VERSION_5 552 553 /* Rewind policy information */ 554 #define ZPOOL_NO_REWIND 1 /* No policy - default behavior */ 555 #define ZPOOL_NEVER_REWIND 2 /* Do not search for best txg or rewind */ 556 #define ZPOOL_TRY_REWIND 4 /* Search for best txg, but do not rewind */ 557 #define ZPOOL_DO_REWIND 8 /* Rewind to best txg w/in deferred frees */ 558 #define ZPOOL_EXTREME_REWIND 16 /* Allow extreme measures to find best txg */ 559 #define ZPOOL_REWIND_MASK 28 /* All the possible rewind bits */ 560 #define ZPOOL_REWIND_POLICIES 31 /* All the possible policy bits */ 561 562 typedef struct zpool_load_policy { 563 uint32_t zlp_rewind; /* rewind policy requested */ 564 uint64_t zlp_maxmeta; /* max acceptable meta-data errors */ 565 uint64_t zlp_maxdata; /* max acceptable data errors */ 566 uint64_t zlp_txg; /* specific txg to load */ 567 } zpool_load_policy_t; 568 569 /* 570 * The following are configuration names used in the nvlist describing a pool's 571 * configuration. New on-disk names should be prefixed with "<reverse-DNS>:" 572 * (e.g. "org.open-zfs:") to avoid conflicting names being developed 573 * independently. 574 */ 575 #define ZPOOL_CONFIG_VERSION "version" 576 #define ZPOOL_CONFIG_POOL_NAME "name" 577 #define ZPOOL_CONFIG_POOL_STATE "state" 578 #define ZPOOL_CONFIG_POOL_TXG "txg" 579 #define ZPOOL_CONFIG_POOL_GUID "pool_guid" 580 #define ZPOOL_CONFIG_CREATE_TXG "create_txg" 581 #define ZPOOL_CONFIG_TOP_GUID "top_guid" 582 #define ZPOOL_CONFIG_VDEV_TREE "vdev_tree" 583 #define ZPOOL_CONFIG_TYPE "type" 584 #define ZPOOL_CONFIG_CHILDREN "children" 585 #define ZPOOL_CONFIG_ID "id" 586 #define ZPOOL_CONFIG_GUID "guid" 587 #define ZPOOL_CONFIG_INDIRECT_OBJECT "com.delphix:indirect_object" 588 #define ZPOOL_CONFIG_INDIRECT_BIRTHS "com.delphix:indirect_births" 589 #define ZPOOL_CONFIG_PREV_INDIRECT_VDEV "com.delphix:prev_indirect_vdev" 590 #define ZPOOL_CONFIG_PATH "path" 591 #define ZPOOL_CONFIG_DEVID "devid" 592 #define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array" 593 #define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift" 594 #define ZPOOL_CONFIG_ASHIFT "ashift" 595 #define ZPOOL_CONFIG_ASIZE "asize" 596 #define ZPOOL_CONFIG_DTL "DTL" 597 #define ZPOOL_CONFIG_SCAN_STATS "scan_stats" /* not stored on disk */ 598 #define ZPOOL_CONFIG_REMOVAL_STATS "removal_stats" /* not stored on disk */ 599 #define ZPOOL_CONFIG_CHECKPOINT_STATS "checkpoint_stats" /* not on disk */ 600 #define ZPOOL_CONFIG_VDEV_STATS "vdev_stats" /* not stored on disk */ 601 #define ZPOOL_CONFIG_INDIRECT_SIZE "indirect_size" /* not stored on disk */ 602 #define ZPOOL_CONFIG_WHOLE_DISK "whole_disk" 603 #define ZPOOL_CONFIG_ERRCOUNT "error_count" 604 #define ZPOOL_CONFIG_NOT_PRESENT "not_present" 605 #define ZPOOL_CONFIG_SPARES "spares" 606 #define ZPOOL_CONFIG_IS_SPARE "is_spare" 607 #define ZPOOL_CONFIG_NPARITY "nparity" 608 #define ZPOOL_CONFIG_HOSTID "hostid" 609 #define ZPOOL_CONFIG_HOSTNAME "hostname" 610 #define ZPOOL_CONFIG_LOADED_TIME "initial_load_time" 611 #define ZPOOL_CONFIG_UNSPARE "unspare" 612 #define ZPOOL_CONFIG_PHYS_PATH "phys_path" 613 #define ZPOOL_CONFIG_IS_LOG "is_log" 614 #define ZPOOL_CONFIG_L2CACHE "l2cache" 615 #define ZPOOL_CONFIG_HOLE_ARRAY "hole_array" 616 #define ZPOOL_CONFIG_VDEV_CHILDREN "vdev_children" 617 #define ZPOOL_CONFIG_IS_HOLE "is_hole" 618 #define ZPOOL_CONFIG_DDT_HISTOGRAM "ddt_histogram" 619 #define ZPOOL_CONFIG_DDT_OBJ_STATS "ddt_object_stats" 620 #define ZPOOL_CONFIG_DDT_STATS "ddt_stats" 621 #define ZPOOL_CONFIG_SPLIT "splitcfg" 622 #define ZPOOL_CONFIG_ORIG_GUID "orig_guid" 623 #define ZPOOL_CONFIG_SPLIT_GUID "split_guid" 624 #define ZPOOL_CONFIG_SPLIT_LIST "guid_list" 625 #define ZPOOL_CONFIG_REMOVING "removing" 626 #define ZPOOL_CONFIG_RESILVER_TXG "resilver_txg" 627 #define ZPOOL_CONFIG_COMMENT "comment" 628 #define ZPOOL_CONFIG_SUSPENDED "suspended" /* not stored on disk */ 629 #define ZPOOL_CONFIG_SUSPENDED_REASON "suspended_reason" /* not stored */ 630 #define ZPOOL_CONFIG_TIMESTAMP "timestamp" /* not stored on disk */ 631 #define ZPOOL_CONFIG_BOOTFS "bootfs" /* not stored on disk */ 632 #define ZPOOL_CONFIG_MISSING_DEVICES "missing_vdevs" /* not stored on disk */ 633 #define ZPOOL_CONFIG_LOAD_INFO "load_info" /* not stored on disk */ 634 #define ZPOOL_CONFIG_REWIND_INFO "rewind_info" /* not stored on disk */ 635 #define ZPOOL_CONFIG_UNSUP_FEAT "unsup_feat" /* not stored on disk */ 636 #define ZPOOL_CONFIG_ENABLED_FEAT "enabled_feat" /* not stored on disk */ 637 #define ZPOOL_CONFIG_CAN_RDONLY "can_rdonly" /* not stored on disk */ 638 #define ZPOOL_CONFIG_FEATURES_FOR_READ "features_for_read" 639 #define ZPOOL_CONFIG_FEATURE_STATS "feature_stats" /* not stored on disk */ 640 #define ZPOOL_CONFIG_ERRATA "errata" /* not stored on disk */ 641 #define ZPOOL_CONFIG_VDEV_TOP_ZAP "com.delphix:vdev_zap_top" 642 #define ZPOOL_CONFIG_VDEV_LEAF_ZAP "com.delphix:vdev_zap_leaf" 643 #define ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS "com.delphix:has_per_vdev_zaps" 644 #define ZPOOL_CONFIG_RESILVER_DEFER "com.datto:resilver_defer" 645 #define ZPOOL_CONFIG_CACHEFILE "cachefile" /* not stored on disk */ 646 #define ZPOOL_CONFIG_MMP_STATE "mmp_state" /* not stored on disk */ 647 #define ZPOOL_CONFIG_MMP_TXG "mmp_txg" /* not stored on disk */ 648 #define ZPOOL_CONFIG_MMP_HOSTNAME "mmp_hostname" /* not stored on disk */ 649 #define ZPOOL_CONFIG_MMP_HOSTID "mmp_hostid" /* not stored on disk */ 650 #define ZPOOL_CONFIG_ALLOCATION_BIAS "alloc_bias" /* not stored on disk */ 651 652 /* 653 * The persistent vdev state is stored as separate values rather than a single 654 * 'vdev_state' entry. This is because a device can be in multiple states, such 655 * as offline and degraded. 656 */ 657 #define ZPOOL_CONFIG_OFFLINE "offline" 658 #define ZPOOL_CONFIG_FAULTED "faulted" 659 #define ZPOOL_CONFIG_DEGRADED "degraded" 660 #define ZPOOL_CONFIG_REMOVED "removed" 661 #define ZPOOL_CONFIG_FRU "fru" 662 #define ZPOOL_CONFIG_AUX_STATE "aux_state" 663 664 /* Pool load policy parameters */ 665 #define ZPOOL_LOAD_POLICY "load-policy" 666 #define ZPOOL_LOAD_REWIND_POLICY "load-rewind-policy" 667 #define ZPOOL_LOAD_REQUEST_TXG "load-request-txg" 668 #define ZPOOL_LOAD_META_THRESH "load-meta-thresh" 669 #define ZPOOL_LOAD_DATA_THRESH "load-data-thresh" 670 671 /* Rewind data discovered */ 672 #define ZPOOL_CONFIG_LOAD_TIME "rewind_txg_ts" 673 #define ZPOOL_CONFIG_LOAD_DATA_ERRORS "verify_data_errors" 674 #define ZPOOL_CONFIG_REWIND_TIME "seconds_of_rewind" 675 676 #define VDEV_TYPE_ROOT "root" 677 #define VDEV_TYPE_MIRROR "mirror" 678 #define VDEV_TYPE_REPLACING "replacing" 679 #define VDEV_TYPE_RAIDZ "raidz" 680 #define VDEV_TYPE_DISK "disk" 681 #define VDEV_TYPE_FILE "file" 682 #define VDEV_TYPE_MISSING "missing" 683 #define VDEV_TYPE_HOLE "hole" 684 #define VDEV_TYPE_SPARE "spare" 685 #define VDEV_TYPE_LOG "log" 686 #define VDEV_TYPE_L2CACHE "l2cache" 687 #define VDEV_TYPE_INDIRECT "indirect" 688 689 /* VDEV_TOP_ZAP_* are used in top-level vdev ZAP objects. */ 690 #define VDEV_TOP_ZAP_INDIRECT_OBSOLETE_SM \ 691 "com.delphix:indirect_obsolete_sm" 692 #define VDEV_TOP_ZAP_OBSOLETE_COUNTS_ARE_PRECISE \ 693 "com.delphix:obsolete_counts_are_precise" 694 #define VDEV_TOP_ZAP_POOL_CHECKPOINT_SM \ 695 "com.delphix:pool_checkpoint_sm" 696 697 #define VDEV_TOP_ZAP_ALLOCATION_BIAS \ 698 "org.zfsonlinux:allocation_bias" 699 700 /* vdev metaslab allocation bias */ 701 #define VDEV_ALLOC_BIAS_LOG "log" 702 #define VDEV_ALLOC_BIAS_SPECIAL "special" 703 #define VDEV_ALLOC_BIAS_DEDUP "dedup" 704 705 #define VDEV_LEAF_ZAP_INITIALIZE_LAST_OFFSET \ 706 "com.delphix:next_offset_to_initialize" 707 #define VDEV_LEAF_ZAP_INITIALIZE_STATE \ 708 "com.delphix:vdev_initialize_state" 709 #define VDEV_LEAF_ZAP_INITIALIZE_ACTION_TIME \ 710 "com.delphix:vdev_initialize_action_time" 711 712 /* 713 * This is needed in userland to report the minimum necessary device size. 714 * 715 * Note that the zfs test suite uses 64MB vdevs. 716 */ 717 #define SPA_MINDEVSIZE (64ULL << 20) 718 719 /* 720 * Set if the fragmentation has not yet been calculated. This can happen 721 * because the space maps have not been upgraded or the histogram feature 722 * is not enabled. 723 */ 724 #define ZFS_FRAG_INVALID UINT64_MAX 725 726 /* 727 * The location of the pool configuration repository, shared between kernel and 728 * userland. 729 */ 730 #define ZPOOL_CACHE "/etc/zfs/zpool.cache" 731 732 /* 733 * vdev states are ordered from least to most healthy. 734 * A vdev that's CANT_OPEN or below is considered unusable. 735 */ 736 typedef enum vdev_state { 737 VDEV_STATE_UNKNOWN = 0, /* Uninitialized vdev */ 738 VDEV_STATE_CLOSED, /* Not currently open */ 739 VDEV_STATE_OFFLINE, /* Not allowed to open */ 740 VDEV_STATE_REMOVED, /* Explicitly removed from system */ 741 VDEV_STATE_CANT_OPEN, /* Tried to open, but failed */ 742 VDEV_STATE_FAULTED, /* External request to fault device */ 743 VDEV_STATE_DEGRADED, /* Replicated vdev with unhealthy kids */ 744 VDEV_STATE_HEALTHY /* Presumed good */ 745 } vdev_state_t; 746 747 #define VDEV_STATE_ONLINE VDEV_STATE_HEALTHY 748 749 /* 750 * vdev aux states. When a vdev is in the CANT_OPEN state, the aux field 751 * of the vdev stats structure uses these constants to distinguish why. 752 */ 753 typedef enum vdev_aux { 754 VDEV_AUX_NONE, /* no error */ 755 VDEV_AUX_OPEN_FAILED, /* ldi_open_*() or vn_open() failed */ 756 VDEV_AUX_CORRUPT_DATA, /* bad label or disk contents */ 757 VDEV_AUX_NO_REPLICAS, /* insufficient number of replicas */ 758 VDEV_AUX_BAD_GUID_SUM, /* vdev guid sum doesn't match */ 759 VDEV_AUX_TOO_SMALL, /* vdev size is too small */ 760 VDEV_AUX_BAD_LABEL, /* the label is OK but invalid */ 761 VDEV_AUX_VERSION_NEWER, /* on-disk version is too new */ 762 VDEV_AUX_VERSION_OLDER, /* on-disk version is too old */ 763 VDEV_AUX_UNSUP_FEAT, /* unsupported features */ 764 VDEV_AUX_SPARED, /* hot spare used in another pool */ 765 VDEV_AUX_ERR_EXCEEDED, /* too many errors */ 766 VDEV_AUX_IO_FAILURE, /* experienced I/O failure */ 767 VDEV_AUX_BAD_LOG, /* cannot read log chain(s) */ 768 VDEV_AUX_EXTERNAL, /* external diagnosis */ 769 VDEV_AUX_SPLIT_POOL, /* vdev was split off into another pool */ 770 VDEV_AUX_ACTIVE, /* vdev active on a different host */ 771 VDEV_AUX_CHILDREN_OFFLINE /* all children are offline */ 772 } vdev_aux_t; 773 774 /* 775 * pool state. The following states are written to disk as part of the normal 776 * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE. The remaining 777 * states are software abstractions used at various levels to communicate 778 * pool state. 779 */ 780 typedef enum pool_state { 781 POOL_STATE_ACTIVE = 0, /* In active use */ 782 POOL_STATE_EXPORTED, /* Explicitly exported */ 783 POOL_STATE_DESTROYED, /* Explicitly destroyed */ 784 POOL_STATE_SPARE, /* Reserved for hot spare use */ 785 POOL_STATE_L2CACHE, /* Level 2 ARC device */ 786 POOL_STATE_UNINITIALIZED, /* Internal spa_t state */ 787 POOL_STATE_UNAVAIL, /* Internal libzfs state */ 788 POOL_STATE_POTENTIALLY_ACTIVE /* Internal libzfs state */ 789 } pool_state_t; 790 791 /* 792 * mmp state. The following states provide additional detail describing 793 * why a pool couldn't be safely imported. 794 */ 795 typedef enum mmp_state { 796 MMP_STATE_ACTIVE = 0, /* In active use */ 797 MMP_STATE_INACTIVE, /* Inactive and safe to import */ 798 MMP_STATE_NO_HOSTID /* System hostid is not set */ 799 } mmp_state_t; 800 801 /* 802 * Scan Functions. 803 */ 804 typedef enum pool_scan_func { 805 POOL_SCAN_NONE, 806 POOL_SCAN_SCRUB, 807 POOL_SCAN_RESILVER, 808 POOL_SCAN_FUNCS 809 } pool_scan_func_t; 810 811 /* 812 * Used to control scrub pause and resume. 813 */ 814 typedef enum pool_scrub_cmd { 815 POOL_SCRUB_NORMAL = 0, 816 POOL_SCRUB_PAUSE, 817 POOL_SCRUB_FLAGS_END 818 } pool_scrub_cmd_t; 819 820 /* 821 * Initialize functions. 822 */ 823 typedef enum pool_initialize_func { 824 POOL_INITIALIZE_DO, 825 POOL_INITIALIZE_CANCEL, 826 POOL_INITIALIZE_SUSPEND, 827 POOL_INITIALIZE_FUNCS 828 } pool_initialize_func_t; 829 830 /* 831 * ZIO types. Needed to interpret vdev statistics below. 832 */ 833 typedef enum zio_type { 834 ZIO_TYPE_NULL = 0, 835 ZIO_TYPE_READ, 836 ZIO_TYPE_WRITE, 837 ZIO_TYPE_FREE, 838 ZIO_TYPE_CLAIM, 839 ZIO_TYPE_IOCTL, 840 ZIO_TYPES 841 } zio_type_t; 842 843 /* 844 * Pool statistics. Note: all fields should be 64-bit because this 845 * is passed between kernel and userland as an nvlist uint64 array. 846 */ 847 typedef struct pool_scan_stat { 848 /* values stored on disk */ 849 uint64_t pss_func; /* pool_scan_func_t */ 850 uint64_t pss_state; /* dsl_scan_state_t */ 851 uint64_t pss_start_time; /* scan start time */ 852 uint64_t pss_end_time; /* scan end time */ 853 uint64_t pss_to_examine; /* total bytes to scan */ 854 uint64_t pss_examined; /* total bytes located by scanner */ 855 uint64_t pss_to_process; /* total bytes to process */ 856 uint64_t pss_processed; /* total processed bytes */ 857 uint64_t pss_errors; /* scan errors */ 858 859 /* values not stored on disk */ 860 uint64_t pss_pass_exam; /* examined bytes per scan pass */ 861 uint64_t pss_pass_issued; /* issued bytes per scan pass */ 862 uint64_t pss_pass_start; /* start time of a scan pass */ 863 uint64_t pss_pass_scrub_pause; /* pause time of a scurb pass */ 864 /* cumulative time scrub spent paused, needed for rate calculation */ 865 uint64_t pss_pass_scrub_spent_paused; 866 867 /* Sorted scrubbing new fields */ 868 /* Stored on disk */ 869 uint64_t pss_issued; /* total bytes checked by scanner */ 870 } pool_scan_stat_t; 871 872 /* 873 * Errata described by http://zfsonlinux.org/msg/ZFS-8000-ER. The ordering 874 * of this enum must be maintained to ensure the errata identifiers map to 875 * the correct documentation. New errata may only be appended to the list 876 * and must contain corresponding documentation at the above link. 877 */ 878 typedef enum zpool_errata { 879 ZPOOL_ERRATA_NONE, 880 ZPOOL_ERRATA_ZOL_2094_SCRUB, 881 ZPOOL_ERRATA_ZOL_2094_ASYNC_DESTROY, 882 ZPOOL_ERRATA_ZOL_6845_ENCRYPTION, 883 ZPOOL_ERRATA_ZOL_8308_ENCRYPTION, 884 } zpool_errata_t; 885 886 typedef struct pool_removal_stat { 887 uint64_t prs_state; /* dsl_scan_state_t */ 888 uint64_t prs_removing_vdev; 889 uint64_t prs_start_time; 890 uint64_t prs_end_time; 891 uint64_t prs_to_copy; /* bytes that need to be copied */ 892 uint64_t prs_copied; /* bytes copied so far */ 893 /* 894 * bytes of memory used for indirect mappings. 895 * This includes all removed vdevs. 896 */ 897 uint64_t prs_mapping_memory; 898 } pool_removal_stat_t; 899 900 typedef enum dsl_scan_state { 901 DSS_NONE, 902 DSS_SCANNING, 903 DSS_FINISHED, 904 DSS_CANCELED, 905 DSS_NUM_STATES 906 } dsl_scan_state_t; 907 908 typedef enum { 909 CS_NONE, 910 CS_CHECKPOINT_EXISTS, 911 CS_CHECKPOINT_DISCARDING, 912 CS_NUM_STATES 913 } checkpoint_state_t; 914 915 typedef struct pool_checkpoint_stat { 916 uint64_t pcs_state; /* checkpoint_state_t */ 917 uint64_t pcs_start_time; /* time checkpoint/discard started */ 918 uint64_t pcs_space; /* checkpointed space */ 919 } pool_checkpoint_stat_t; 920 921 typedef enum { 922 VDEV_INITIALIZE_NONE, 923 VDEV_INITIALIZE_ACTIVE, 924 VDEV_INITIALIZE_CANCELED, 925 VDEV_INITIALIZE_SUSPENDED, 926 VDEV_INITIALIZE_COMPLETE 927 } vdev_initializing_state_t; 928 929 /* 930 * Vdev statistics. Note: all fields should be 64-bit because this 931 * is passed between kernel and userland as an nvlist uint64 array. 932 */ 933 typedef struct vdev_stat { 934 hrtime_t vs_timestamp; /* time since vdev load */ 935 uint64_t vs_state; /* vdev state */ 936 uint64_t vs_aux; /* see vdev_aux_t */ 937 uint64_t vs_alloc; /* space allocated */ 938 uint64_t vs_space; /* total capacity */ 939 uint64_t vs_dspace; /* deflated capacity */ 940 uint64_t vs_rsize; /* replaceable dev size */ 941 uint64_t vs_esize; /* expandable dev size */ 942 uint64_t vs_ops[ZIO_TYPES]; /* operation count */ 943 uint64_t vs_bytes[ZIO_TYPES]; /* bytes read/written */ 944 uint64_t vs_read_errors; /* read errors */ 945 uint64_t vs_write_errors; /* write errors */ 946 uint64_t vs_checksum_errors; /* checksum errors */ 947 uint64_t vs_initialize_errors; /* initializing errors */ 948 uint64_t vs_self_healed; /* self-healed bytes */ 949 uint64_t vs_scan_removing; /* removing? */ 950 uint64_t vs_scan_processed; /* scan processed bytes */ 951 uint64_t vs_fragmentation; /* device fragmentation */ 952 uint64_t vs_initialize_bytes_done; /* bytes initialized */ 953 uint64_t vs_initialize_bytes_est; /* total bytes to initialize */ 954 uint64_t vs_initialize_state; /* vdev_initialzing_state_t */ 955 uint64_t vs_initialize_action_time; /* time_t */ 956 uint64_t vs_checkpoint_space; /* checkpoint-consumed space */ 957 uint64_t vs_resilver_deferred; /* resilver deferred */ 958 } vdev_stat_t; 959 960 /* 961 * DDT statistics. Note: all fields should be 64-bit because this 962 * is passed between kernel and userland as an nvlist uint64 array. 963 */ 964 typedef struct ddt_object { 965 uint64_t ddo_count; /* number of elments in ddt */ 966 uint64_t ddo_dspace; /* size of ddt on disk */ 967 uint64_t ddo_mspace; /* size of ddt in-core */ 968 } ddt_object_t; 969 970 typedef struct ddt_stat { 971 uint64_t dds_blocks; /* blocks */ 972 uint64_t dds_lsize; /* logical size */ 973 uint64_t dds_psize; /* physical size */ 974 uint64_t dds_dsize; /* deflated allocated size */ 975 uint64_t dds_ref_blocks; /* referenced blocks */ 976 uint64_t dds_ref_lsize; /* referenced lsize * refcnt */ 977 uint64_t dds_ref_psize; /* referenced psize * refcnt */ 978 uint64_t dds_ref_dsize; /* referenced dsize * refcnt */ 979 } ddt_stat_t; 980 981 typedef struct ddt_histogram { 982 ddt_stat_t ddh_stat[64]; /* power-of-two histogram buckets */ 983 } ddt_histogram_t; 984 985 #define ZVOL_DRIVER "zvol" 986 #define ZFS_DRIVER "zfs" 987 #define ZFS_DEV "/dev/zfs" 988 #define ZFS_DISK_ROOT "/dev/dsk" 989 #define ZFS_DISK_ROOTD ZFS_DISK_ROOT "/" 990 #define ZFS_RDISK_ROOT "/dev/rdsk" 991 #define ZFS_RDISK_ROOTD ZFS_RDISK_ROOT "/" 992 993 /* general zvol path */ 994 #define ZVOL_DIR "/dev/zvol" 995 /* expansion */ 996 #define ZVOL_PSEUDO_DEV "/devices/pseudo/zfs@0:" 997 /* for dump and swap */ 998 #define ZVOL_FULL_DEV_DIR ZVOL_DIR "/dsk/" 999 #define ZVOL_FULL_RDEV_DIR ZVOL_DIR "/rdsk/" 1000 1001 #define ZVOL_PROP_NAME "name" 1002 #define ZVOL_DEFAULT_BLOCKSIZE 8192 1003 1004 /* 1005 * /dev/zfs ioctl numbers. 1006 */ 1007 typedef enum zfs_ioc { 1008 ZFS_IOC_FIRST = ('Z' << 8), 1009 ZFS_IOC = ZFS_IOC_FIRST, 1010 ZFS_IOC_POOL_CREATE = ZFS_IOC_FIRST, 1011 ZFS_IOC_POOL_DESTROY, 1012 ZFS_IOC_POOL_IMPORT, 1013 ZFS_IOC_POOL_EXPORT, 1014 ZFS_IOC_POOL_CONFIGS, 1015 ZFS_IOC_POOL_STATS, 1016 ZFS_IOC_POOL_TRYIMPORT, 1017 ZFS_IOC_POOL_SCAN, 1018 ZFS_IOC_POOL_FREEZE, 1019 ZFS_IOC_POOL_UPGRADE, 1020 ZFS_IOC_POOL_GET_HISTORY, 1021 ZFS_IOC_VDEV_ADD, 1022 ZFS_IOC_VDEV_REMOVE, 1023 ZFS_IOC_VDEV_SET_STATE, 1024 ZFS_IOC_VDEV_ATTACH, 1025 ZFS_IOC_VDEV_DETACH, 1026 ZFS_IOC_VDEV_SETPATH, 1027 ZFS_IOC_VDEV_SETFRU, 1028 ZFS_IOC_OBJSET_STATS, 1029 ZFS_IOC_OBJSET_ZPLPROPS, 1030 ZFS_IOC_DATASET_LIST_NEXT, 1031 ZFS_IOC_SNAPSHOT_LIST_NEXT, 1032 ZFS_IOC_SET_PROP, 1033 ZFS_IOC_CREATE, 1034 ZFS_IOC_DESTROY, 1035 ZFS_IOC_ROLLBACK, 1036 ZFS_IOC_RENAME, 1037 ZFS_IOC_RECV, 1038 ZFS_IOC_SEND, 1039 ZFS_IOC_INJECT_FAULT, 1040 ZFS_IOC_CLEAR_FAULT, 1041 ZFS_IOC_INJECT_LIST_NEXT, 1042 ZFS_IOC_ERROR_LOG, 1043 ZFS_IOC_CLEAR, 1044 ZFS_IOC_PROMOTE, 1045 ZFS_IOC_SNAPSHOT, 1046 ZFS_IOC_DSOBJ_TO_DSNAME, 1047 ZFS_IOC_OBJ_TO_PATH, 1048 ZFS_IOC_POOL_SET_PROPS, 1049 ZFS_IOC_POOL_GET_PROPS, 1050 ZFS_IOC_SET_FSACL, 1051 ZFS_IOC_GET_FSACL, 1052 ZFS_IOC_SHARE, 1053 ZFS_IOC_INHERIT_PROP, 1054 ZFS_IOC_SMB_ACL, 1055 ZFS_IOC_USERSPACE_ONE, 1056 ZFS_IOC_USERSPACE_MANY, 1057 ZFS_IOC_USERSPACE_UPGRADE, 1058 ZFS_IOC_HOLD, 1059 ZFS_IOC_RELEASE, 1060 ZFS_IOC_GET_HOLDS, 1061 ZFS_IOC_OBJSET_RECVD_PROPS, 1062 ZFS_IOC_VDEV_SPLIT, 1063 ZFS_IOC_NEXT_OBJ, 1064 ZFS_IOC_DIFF, 1065 ZFS_IOC_TMP_SNAPSHOT, 1066 ZFS_IOC_OBJ_TO_STATS, 1067 ZFS_IOC_SPACE_WRITTEN, 1068 ZFS_IOC_SPACE_SNAPS, 1069 ZFS_IOC_DESTROY_SNAPS, 1070 ZFS_IOC_POOL_REGUID, 1071 ZFS_IOC_POOL_REOPEN, 1072 ZFS_IOC_SEND_PROGRESS, 1073 ZFS_IOC_LOG_HISTORY, 1074 ZFS_IOC_SEND_NEW, 1075 ZFS_IOC_SEND_SPACE, 1076 ZFS_IOC_CLONE, 1077 ZFS_IOC_BOOKMARK, 1078 ZFS_IOC_GET_BOOKMARKS, 1079 ZFS_IOC_DESTROY_BOOKMARKS, 1080 ZFS_IOC_CHANNEL_PROGRAM, 1081 ZFS_IOC_REMAP, 1082 ZFS_IOC_POOL_CHECKPOINT, 1083 ZFS_IOC_POOL_DISCARD_CHECKPOINT, 1084 ZFS_IOC_POOL_INITIALIZE, 1085 ZFS_IOC_POOL_SYNC, 1086 ZFS_IOC_LOAD_KEY, 1087 ZFS_IOC_UNLOAD_KEY, 1088 ZFS_IOC_CHANGE_KEY, 1089 ZFS_IOC_LAST 1090 } zfs_ioc_t; 1091 1092 /* 1093 * ZFS-specific error codes used for returning descriptive errors 1094 * to the userland through zfs ioctls. 1095 * 1096 * The enum implicitly includes all the error codes from errno.h. 1097 * New code should use and extend this enum for errors that are 1098 * not described precisely by generic errno codes. 1099 */ 1100 typedef enum { 1101 ZFS_ERR_CHECKPOINT_EXISTS = 1024, 1102 ZFS_ERR_DISCARDING_CHECKPOINT, 1103 ZFS_ERR_NO_CHECKPOINT, 1104 ZFS_ERR_DEVRM_IN_PROGRESS, 1105 ZFS_ERR_VDEV_TOO_BIG, 1106 ZFS_ERR_FROM_IVSET_GUID_MISSING, 1107 ZFS_ERR_FROM_IVSET_GUID_MISMATCH, 1108 ZFS_ERR_SPILL_BLOCK_FLAG_MISSING, 1109 } zfs_errno_t; 1110 1111 /* 1112 * Internal SPA load state. Used by FMA diagnosis engine. 1113 */ 1114 typedef enum { 1115 SPA_LOAD_NONE, /* no load in progress */ 1116 SPA_LOAD_OPEN, /* normal open */ 1117 SPA_LOAD_IMPORT, /* import in progress */ 1118 SPA_LOAD_TRYIMPORT, /* tryimport in progress */ 1119 SPA_LOAD_RECOVER, /* recovery requested */ 1120 SPA_LOAD_ERROR, /* load failed */ 1121 SPA_LOAD_CREATE /* creation in progress */ 1122 } spa_load_state_t; 1123 1124 /* supported encryption algorithms */ 1125 enum zio_encrypt { 1126 ZIO_CRYPT_INHERIT = 0, 1127 ZIO_CRYPT_ON, 1128 ZIO_CRYPT_OFF, 1129 ZIO_CRYPT_AES_128_CCM, 1130 ZIO_CRYPT_AES_192_CCM, 1131 ZIO_CRYPT_AES_256_CCM, 1132 ZIO_CRYPT_AES_128_GCM, 1133 ZIO_CRYPT_AES_192_GCM, 1134 ZIO_CRYPT_AES_256_GCM, 1135 ZIO_CRYPT_FUNCTIONS 1136 }; 1137 1138 /* 1139 * Bookmark name values. 1140 */ 1141 #define ZPOOL_ERR_LIST "error list" 1142 #define ZPOOL_ERR_DATASET "dataset" 1143 #define ZPOOL_ERR_OBJECT "object" 1144 1145 #define HIS_MAX_RECORD_LEN (MAXPATHLEN + MAXPATHLEN + 1) 1146 1147 /* 1148 * The following are names used in the nvlist describing 1149 * the pool's history log. 1150 */ 1151 #define ZPOOL_HIST_RECORD "history record" 1152 #define ZPOOL_HIST_TIME "history time" 1153 #define ZPOOL_HIST_CMD "history command" 1154 #define ZPOOL_HIST_WHO "history who" 1155 #define ZPOOL_HIST_ZONE "history zone" 1156 #define ZPOOL_HIST_HOST "history hostname" 1157 #define ZPOOL_HIST_TXG "history txg" 1158 #define ZPOOL_HIST_INT_EVENT "history internal event" 1159 #define ZPOOL_HIST_INT_STR "history internal str" 1160 #define ZPOOL_HIST_INT_NAME "internal_name" 1161 #define ZPOOL_HIST_IOCTL "ioctl" 1162 #define ZPOOL_HIST_INPUT_NVL "in_nvl" 1163 #define ZPOOL_HIST_OUTPUT_NVL "out_nvl" 1164 #define ZPOOL_HIST_DSNAME "dsname" 1165 #define ZPOOL_HIST_DSID "dsid" 1166 #define ZPOOL_HIST_ERRNO "errno" 1167 1168 /* 1169 * The following are names used when invoking ZFS_IOC_POOL_INITIALIZE. 1170 */ 1171 #define ZPOOL_INITIALIZE_COMMAND "initialize_command" 1172 #define ZPOOL_INITIALIZE_VDEVS "initialize_vdevs" 1173 1174 /* 1175 * Special nvlist name that will not have its args recorded in the pool's 1176 * history log. 1177 */ 1178 #define ZPOOL_HIDDEN_ARGS "hidden_args" 1179 1180 /* 1181 * Flags for ZFS_IOC_VDEV_SET_STATE 1182 */ 1183 #define ZFS_ONLINE_CHECKREMOVE 0x1 1184 #define ZFS_ONLINE_UNSPARE 0x2 1185 #define ZFS_ONLINE_FORCEFAULT 0x4 1186 #define ZFS_ONLINE_EXPAND 0x8 1187 #define ZFS_OFFLINE_TEMPORARY 0x1 1188 1189 /* 1190 * Flags for ZFS_IOC_POOL_IMPORT 1191 */ 1192 #define ZFS_IMPORT_NORMAL 0x0 1193 #define ZFS_IMPORT_VERBATIM 0x1 1194 #define ZFS_IMPORT_ANY_HOST 0x2 1195 #define ZFS_IMPORT_MISSING_LOG 0x4 1196 #define ZFS_IMPORT_ONLY 0x8 1197 #define ZFS_IMPORT_CHECKPOINT 0x10 1198 #define ZFS_IMPORT_TEMP_NAME 0x20 1199 #define ZFS_IMPORT_SKIP_MMP 0x40 1200 #define ZFS_IMPORT_LOAD_KEYS 0x80 1201 1202 /* 1203 * Channel program argument/return nvlist keys and defaults. 1204 */ 1205 #define ZCP_ARG_PROGRAM "program" 1206 #define ZCP_ARG_ARGLIST "arg" 1207 #define ZCP_ARG_SYNC "sync" 1208 #define ZCP_ARG_INSTRLIMIT "instrlimit" 1209 #define ZCP_ARG_MEMLIMIT "memlimit" 1210 1211 #define ZCP_ARG_CLIARGV "argv" 1212 1213 #define ZCP_RET_ERROR "error" 1214 #define ZCP_RET_RETURN "return" 1215 1216 #define ZCP_DEFAULT_INSTRLIMIT (10 * 1000 * 1000) 1217 #define ZCP_MAX_INSTRLIMIT (10 * ZCP_DEFAULT_INSTRLIMIT) 1218 #define ZCP_DEFAULT_MEMLIMIT (10 * 1024 * 1024) 1219 #define ZCP_MAX_MEMLIMIT (10 * ZCP_DEFAULT_MEMLIMIT) 1220 1221 /* 1222 * Sysevent payload members. ZFS will generate the following sysevents with the 1223 * given payloads: 1224 * 1225 * ESC_ZFS_RESILVER_START 1226 * ESC_ZFS_RESILVER_END 1227 * ESC_ZFS_POOL_DESTROY 1228 * ESC_ZFS_POOL_REGUID 1229 * 1230 * ZFS_EV_POOL_NAME DATA_TYPE_STRING 1231 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64 1232 * 1233 * ESC_ZFS_VDEV_REMOVE 1234 * ESC_ZFS_VDEV_CLEAR 1235 * ESC_ZFS_VDEV_CHECK 1236 * 1237 * ZFS_EV_POOL_NAME DATA_TYPE_STRING 1238 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64 1239 * ZFS_EV_VDEV_PATH DATA_TYPE_STRING (optional) 1240 * ZFS_EV_VDEV_GUID DATA_TYPE_UINT64 1241 * 1242 * ESC_ZFS_HISTORY_EVENT 1243 * 1244 * ZFS_EV_POOL_NAME DATA_TYPE_STRING 1245 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64 1246 * ZFS_EV_HIST_TIME DATA_TYPE_UINT64 (optional) 1247 * ZFS_EV_HIST_CMD DATA_TYPE_STRING (optional) 1248 * ZFS_EV_HIST_WHO DATA_TYPE_UINT64 (optional) 1249 * ZFS_EV_HIST_ZONE DATA_TYPE_STRING (optional) 1250 * ZFS_EV_HIST_HOST DATA_TYPE_STRING (optional) 1251 * ZFS_EV_HIST_TXG DATA_TYPE_UINT64 (optional) 1252 * ZFS_EV_HIST_INT_EVENT DATA_TYPE_UINT64 (optional) 1253 * ZFS_EV_HIST_INT_STR DATA_TYPE_STRING (optional) 1254 * ZFS_EV_HIST_INT_NAME DATA_TYPE_STRING (optional) 1255 * ZFS_EV_HIST_IOCTL DATA_TYPE_STRING (optional) 1256 * ZFS_EV_HIST_DSNAME DATA_TYPE_STRING (optional) 1257 * ZFS_EV_HIST_DSID DATA_TYPE_UINT64 (optional) 1258 * 1259 * The ZFS_EV_HIST_* members will correspond to the ZPOOL_HIST_* members in the 1260 * history log nvlist. The keynames will be free of any spaces or other 1261 * characters that could be potentially unexpected to consumers of the 1262 * sysevents. 1263 */ 1264 #define ZFS_EV_POOL_NAME "pool_name" 1265 #define ZFS_EV_POOL_GUID "pool_guid" 1266 #define ZFS_EV_VDEV_PATH "vdev_path" 1267 #define ZFS_EV_VDEV_GUID "vdev_guid" 1268 #define ZFS_EV_HIST_TIME "history_time" 1269 #define ZFS_EV_HIST_CMD "history_command" 1270 #define ZFS_EV_HIST_WHO "history_who" 1271 #define ZFS_EV_HIST_ZONE "history_zone" 1272 #define ZFS_EV_HIST_HOST "history_hostname" 1273 #define ZFS_EV_HIST_TXG "history_txg" 1274 #define ZFS_EV_HIST_INT_EVENT "history_internal_event" 1275 #define ZFS_EV_HIST_INT_STR "history_internal_str" 1276 #define ZFS_EV_HIST_INT_NAME "history_internal_name" 1277 #define ZFS_EV_HIST_IOCTL "history_ioctl" 1278 #define ZFS_EV_HIST_DSNAME "history_dsname" 1279 #define ZFS_EV_HIST_DSID "history_dsid" 1280 1281 #ifdef __cplusplus 1282 } 1283 #endif 1284 1285 #endif /* _SYS_FS_ZFS_H */ 1286