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 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_FS_ZFS_H 28 #define _SYS_FS_ZFS_H 29 30 #include <sys/time.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Types and constants shared between userland and the kernel. 38 */ 39 40 /* 41 * Each dataset can be one of the following types. These constants can be 42 * combined into masks that can be passed to various functions. 43 */ 44 typedef enum { 45 ZFS_TYPE_FILESYSTEM = 0x1, 46 ZFS_TYPE_SNAPSHOT = 0x2, 47 ZFS_TYPE_VOLUME = 0x4, 48 ZFS_TYPE_POOL = 0x8 49 } zfs_type_t; 50 51 #define ZFS_TYPE_DATASET \ 52 (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT) 53 54 #define ZAP_MAXNAMELEN 256 55 #define ZAP_MAXVALUELEN (1024 * 8) 56 #define ZAP_OLDMAXVALUELEN 1024 57 58 /* 59 * Dataset properties are identified by these constants and must be added to 60 * the end of this list to ensure that external consumers are not affected 61 * by the change. If you make any changes to this list, be sure to update 62 * the property table in usr/src/common/zfs/zfs_prop.c. 63 */ 64 typedef enum { 65 ZFS_PROP_TYPE, 66 ZFS_PROP_CREATION, 67 ZFS_PROP_USED, 68 ZFS_PROP_AVAILABLE, 69 ZFS_PROP_REFERENCED, 70 ZFS_PROP_COMPRESSRATIO, 71 ZFS_PROP_MOUNTED, 72 ZFS_PROP_ORIGIN, 73 ZFS_PROP_QUOTA, 74 ZFS_PROP_RESERVATION, 75 ZFS_PROP_VOLSIZE, 76 ZFS_PROP_VOLBLOCKSIZE, 77 ZFS_PROP_RECORDSIZE, 78 ZFS_PROP_MOUNTPOINT, 79 ZFS_PROP_SHARENFS, 80 ZFS_PROP_CHECKSUM, 81 ZFS_PROP_COMPRESSION, 82 ZFS_PROP_ATIME, 83 ZFS_PROP_DEVICES, 84 ZFS_PROP_EXEC, 85 ZFS_PROP_SETUID, 86 ZFS_PROP_READONLY, 87 ZFS_PROP_ZONED, 88 ZFS_PROP_SNAPDIR, 89 ZFS_PROP_ACLMODE, 90 ZFS_PROP_ACLINHERIT, 91 ZFS_PROP_CREATETXG, /* not exposed to the user */ 92 ZFS_PROP_NAME, /* not exposed to the user */ 93 ZFS_PROP_CANMOUNT, 94 ZFS_PROP_SHAREISCSI, 95 ZFS_PROP_ISCSIOPTIONS, /* not exposed to the user */ 96 ZFS_PROP_XATTR, 97 ZFS_PROP_NUMCLONES, /* not exposed to the user */ 98 ZFS_PROP_COPIES, 99 ZFS_PROP_VERSION, 100 ZFS_PROP_UTF8ONLY, 101 ZFS_PROP_NORMALIZE, 102 ZFS_PROP_CASE, 103 ZFS_PROP_VSCAN, 104 ZFS_PROP_NBMAND, 105 ZFS_PROP_SHARESMB, 106 ZFS_PROP_REFQUOTA, 107 ZFS_PROP_REFRESERVATION, 108 ZFS_PROP_GUID, 109 ZFS_PROP_PRIMARYCACHE, 110 ZFS_PROP_SECONDARYCACHE, 111 ZFS_PROP_USEDSNAP, 112 ZFS_PROP_USEDDS, 113 ZFS_PROP_USEDCHILD, 114 ZFS_PROP_USEDREFRESERV, 115 ZFS_PROP_USERACCOUNTING, /* not exposed to the user */ 116 ZFS_PROP_STMF_SHAREINFO, /* not exposed to the user */ 117 ZFS_PROP_DEFER_DESTROY, 118 ZFS_PROP_USERREFS, 119 ZFS_PROP_LOGBIAS, 120 ZFS_PROP_UNIQUE, /* not exposed to the user */ 121 ZFS_PROP_OBJSETID, /* not exposed to the user */ 122 ZFS_PROP_DEDUP, 123 ZFS_PROP_MLSLABEL, 124 ZFS_NUM_PROPS 125 } zfs_prop_t; 126 127 typedef enum { 128 ZFS_PROP_USERUSED, 129 ZFS_PROP_USERQUOTA, 130 ZFS_PROP_GROUPUSED, 131 ZFS_PROP_GROUPQUOTA, 132 ZFS_NUM_USERQUOTA_PROPS 133 } zfs_userquota_prop_t; 134 135 extern const char *zfs_userquota_prop_prefixes[ZFS_NUM_USERQUOTA_PROPS]; 136 137 /* 138 * Pool properties are identified by these constants and must be added to the 139 * end of this list to ensure that external consumers are not affected 140 * by the change. If you make any changes to this list, be sure to update 141 * the property table in usr/src/common/zfs/zpool_prop.c. 142 */ 143 typedef enum { 144 ZPOOL_PROP_NAME, 145 ZPOOL_PROP_SIZE, 146 ZPOOL_PROP_CAPACITY, 147 ZPOOL_PROP_ALTROOT, 148 ZPOOL_PROP_HEALTH, 149 ZPOOL_PROP_GUID, 150 ZPOOL_PROP_VERSION, 151 ZPOOL_PROP_BOOTFS, 152 ZPOOL_PROP_DELEGATION, 153 ZPOOL_PROP_AUTOREPLACE, 154 ZPOOL_PROP_CACHEFILE, 155 ZPOOL_PROP_FAILUREMODE, 156 ZPOOL_PROP_LISTSNAPS, 157 ZPOOL_PROP_AUTOEXPAND, 158 ZPOOL_PROP_DEDUPDITTO, 159 ZPOOL_PROP_DEDUPRATIO, 160 ZPOOL_PROP_FREE, 161 ZPOOL_PROP_ALLOCATED, 162 ZPOOL_NUM_PROPS 163 } zpool_prop_t; 164 165 #define ZPROP_CONT -2 166 #define ZPROP_INVAL -1 167 168 #define ZPROP_VALUE "value" 169 #define ZPROP_SOURCE "source" 170 171 typedef enum { 172 ZPROP_SRC_NONE = 0x1, 173 ZPROP_SRC_DEFAULT = 0x2, 174 ZPROP_SRC_TEMPORARY = 0x4, 175 ZPROP_SRC_LOCAL = 0x8, 176 ZPROP_SRC_INHERITED = 0x10, 177 ZPROP_SRC_RECEIVED = 0x20 178 } zprop_source_t; 179 180 #define ZPROP_SRC_ALL 0x3f 181 182 #define ZPROP_SOURCE_VAL_RECVD "$recvd" 183 #define ZPROP_N_MORE_ERRORS "N_MORE_ERRORS" 184 /* 185 * Dataset flag implemented as a special entry in the props zap object 186 * indicating that the dataset has received properties on or after 187 * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties 188 * just as it did in earlier versions, and thereafter, local properties are 189 * preserved. 190 */ 191 #define ZPROP_HAS_RECVD "$hasrecvd" 192 193 typedef enum { 194 ZPROP_ERR_NOCLEAR = 0x1, /* failure to clear existing props */ 195 ZPROP_ERR_NORESTORE = 0x2 /* failure to restore props on error */ 196 } zprop_errflags_t; 197 198 typedef int (*zprop_func)(int, void *); 199 200 /* 201 * Properties to be set on the root file system of a new pool 202 * are stuffed into their own nvlist, which is then included in 203 * the properties nvlist with the pool properties. 204 */ 205 #define ZPOOL_ROOTFS_PROPS "root-props-nvl" 206 207 /* 208 * Dataset property functions shared between libzfs and kernel. 209 */ 210 const char *zfs_prop_default_string(zfs_prop_t); 211 uint64_t zfs_prop_default_numeric(zfs_prop_t); 212 boolean_t zfs_prop_readonly(zfs_prop_t); 213 boolean_t zfs_prop_inheritable(zfs_prop_t); 214 boolean_t zfs_prop_setonce(zfs_prop_t); 215 const char *zfs_prop_to_name(zfs_prop_t); 216 zfs_prop_t zfs_name_to_prop(const char *); 217 boolean_t zfs_prop_user(const char *); 218 boolean_t zfs_prop_userquota(const char *); 219 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **); 220 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *); 221 uint64_t zfs_prop_random_value(zfs_prop_t, uint64_t seed); 222 boolean_t zfs_prop_valid_for_type(int, zfs_type_t); 223 224 /* 225 * Pool property functions shared between libzfs and kernel. 226 */ 227 zpool_prop_t zpool_name_to_prop(const char *); 228 const char *zpool_prop_to_name(zpool_prop_t); 229 const char *zpool_prop_default_string(zpool_prop_t); 230 uint64_t zpool_prop_default_numeric(zpool_prop_t); 231 boolean_t zpool_prop_readonly(zpool_prop_t); 232 int zpool_prop_index_to_string(zpool_prop_t, uint64_t, const char **); 233 int zpool_prop_string_to_index(zpool_prop_t, const char *, uint64_t *); 234 uint64_t zpool_prop_random_value(zpool_prop_t, uint64_t seed); 235 236 /* 237 * Definitions for the Delegation. 238 */ 239 typedef enum { 240 ZFS_DELEG_WHO_UNKNOWN = 0, 241 ZFS_DELEG_USER = 'u', 242 ZFS_DELEG_USER_SETS = 'U', 243 ZFS_DELEG_GROUP = 'g', 244 ZFS_DELEG_GROUP_SETS = 'G', 245 ZFS_DELEG_EVERYONE = 'e', 246 ZFS_DELEG_EVERYONE_SETS = 'E', 247 ZFS_DELEG_CREATE = 'c', 248 ZFS_DELEG_CREATE_SETS = 'C', 249 ZFS_DELEG_NAMED_SET = 's', 250 ZFS_DELEG_NAMED_SET_SETS = 'S' 251 } zfs_deleg_who_type_t; 252 253 typedef enum { 254 ZFS_DELEG_NONE = 0, 255 ZFS_DELEG_PERM_LOCAL = 1, 256 ZFS_DELEG_PERM_DESCENDENT = 2, 257 ZFS_DELEG_PERM_LOCALDESCENDENT = 3, 258 ZFS_DELEG_PERM_CREATE = 4 259 } zfs_deleg_inherit_t; 260 261 #define ZFS_DELEG_PERM_UID "uid" 262 #define ZFS_DELEG_PERM_GID "gid" 263 #define ZFS_DELEG_PERM_GROUPS "groups" 264 265 #define ZFS_MLSLABEL_DEFAULT "none" 266 267 #define ZFS_SMB_ACL_SRC "src" 268 #define ZFS_SMB_ACL_TARGET "target" 269 270 typedef enum { 271 ZFS_CANMOUNT_OFF = 0, 272 ZFS_CANMOUNT_ON = 1, 273 ZFS_CANMOUNT_NOAUTO = 2 274 } zfs_canmount_type_t; 275 276 typedef enum { 277 ZFS_LOGBIAS_LATENCY = 0, 278 ZFS_LOGBIAS_THROUGHPUT = 1 279 } zfs_logbias_op_t; 280 281 typedef enum zfs_share_op { 282 ZFS_SHARE_NFS = 0, 283 ZFS_UNSHARE_NFS = 1, 284 ZFS_SHARE_SMB = 2, 285 ZFS_UNSHARE_SMB = 3 286 } zfs_share_op_t; 287 288 typedef enum zfs_smb_acl_op { 289 ZFS_SMB_ACL_ADD, 290 ZFS_SMB_ACL_REMOVE, 291 ZFS_SMB_ACL_RENAME, 292 ZFS_SMB_ACL_PURGE 293 } zfs_smb_acl_op_t; 294 295 typedef enum zfs_cache_type { 296 ZFS_CACHE_NONE = 0, 297 ZFS_CACHE_METADATA = 1, 298 ZFS_CACHE_ALL = 2 299 } zfs_cache_type_t; 300 301 302 /* 303 * On-disk version number. 304 */ 305 #define SPA_VERSION_1 1ULL 306 #define SPA_VERSION_2 2ULL 307 #define SPA_VERSION_3 3ULL 308 #define SPA_VERSION_4 4ULL 309 #define SPA_VERSION_5 5ULL 310 #define SPA_VERSION_6 6ULL 311 #define SPA_VERSION_7 7ULL 312 #define SPA_VERSION_8 8ULL 313 #define SPA_VERSION_9 9ULL 314 #define SPA_VERSION_10 10ULL 315 #define SPA_VERSION_11 11ULL 316 #define SPA_VERSION_12 12ULL 317 #define SPA_VERSION_13 13ULL 318 #define SPA_VERSION_14 14ULL 319 #define SPA_VERSION_15 15ULL 320 #define SPA_VERSION_16 16ULL 321 #define SPA_VERSION_17 17ULL 322 #define SPA_VERSION_18 18ULL 323 #define SPA_VERSION_19 19ULL 324 #define SPA_VERSION_20 20ULL 325 #define SPA_VERSION_21 21ULL 326 #define SPA_VERSION_22 22ULL 327 /* 328 * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk 329 * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*}, 330 * and do the appropriate changes. Also bump the version number in 331 * usr/src/grub/capability. 332 */ 333 #define SPA_VERSION SPA_VERSION_22 334 #define SPA_VERSION_STRING "22" 335 336 /* 337 * Symbolic names for the changes that caused a SPA_VERSION switch. 338 * Used in the code when checking for presence or absence of a feature. 339 * Feel free to define multiple symbolic names for each version if there 340 * were multiple changes to on-disk structures during that version. 341 * 342 * NOTE: When checking the current SPA_VERSION in your code, be sure 343 * to use spa_version() since it reports the version of the 344 * last synced uberblock. Checking the in-flight version can 345 * be dangerous in some cases. 346 */ 347 #define SPA_VERSION_INITIAL SPA_VERSION_1 348 #define SPA_VERSION_DITTO_BLOCKS SPA_VERSION_2 349 #define SPA_VERSION_SPARES SPA_VERSION_3 350 #define SPA_VERSION_RAIDZ2 SPA_VERSION_3 351 #define SPA_VERSION_BPLIST_ACCOUNT SPA_VERSION_3 352 #define SPA_VERSION_RAIDZ_DEFLATE SPA_VERSION_3 353 #define SPA_VERSION_DNODE_BYTES SPA_VERSION_3 354 #define SPA_VERSION_ZPOOL_HISTORY SPA_VERSION_4 355 #define SPA_VERSION_GZIP_COMPRESSION SPA_VERSION_5 356 #define SPA_VERSION_BOOTFS SPA_VERSION_6 357 #define SPA_VERSION_SLOGS SPA_VERSION_7 358 #define SPA_VERSION_DELEGATED_PERMS SPA_VERSION_8 359 #define SPA_VERSION_FUID SPA_VERSION_9 360 #define SPA_VERSION_REFRESERVATION SPA_VERSION_9 361 #define SPA_VERSION_REFQUOTA SPA_VERSION_9 362 #define SPA_VERSION_UNIQUE_ACCURATE SPA_VERSION_9 363 #define SPA_VERSION_L2CACHE SPA_VERSION_10 364 #define SPA_VERSION_NEXT_CLONES SPA_VERSION_11 365 #define SPA_VERSION_ORIGIN SPA_VERSION_11 366 #define SPA_VERSION_DSL_SCRUB SPA_VERSION_11 367 #define SPA_VERSION_SNAP_PROPS SPA_VERSION_12 368 #define SPA_VERSION_USED_BREAKDOWN SPA_VERSION_13 369 #define SPA_VERSION_PASSTHROUGH_X SPA_VERSION_14 370 #define SPA_VERSION_USERSPACE SPA_VERSION_15 371 #define SPA_VERSION_STMF_PROP SPA_VERSION_16 372 #define SPA_VERSION_RAIDZ3 SPA_VERSION_17 373 #define SPA_VERSION_USERREFS SPA_VERSION_18 374 #define SPA_VERSION_HOLES SPA_VERSION_19 375 #define SPA_VERSION_ZLE_COMPRESSION SPA_VERSION_20 376 #define SPA_VERSION_DEDUP SPA_VERSION_21 377 #define SPA_VERSION_RECVD_PROPS SPA_VERSION_22 378 379 /* 380 * ZPL version - rev'd whenever an incompatible on-disk format change 381 * occurs. This is independent of SPA/DMU/ZAP versioning. You must 382 * also update the version_table[] and help message in zfs_prop.c. 383 * 384 * When changing, be sure to teach GRUB how to read the new format! 385 * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*} 386 */ 387 #define ZPL_VERSION_1 1ULL 388 #define ZPL_VERSION_2 2ULL 389 #define ZPL_VERSION_3 3ULL 390 #define ZPL_VERSION_4 4ULL 391 #define ZPL_VERSION ZPL_VERSION_4 392 #define ZPL_VERSION_STRING "4" 393 394 #define ZPL_VERSION_INITIAL ZPL_VERSION_1 395 #define ZPL_VERSION_DIRENT_TYPE ZPL_VERSION_2 396 #define ZPL_VERSION_FUID ZPL_VERSION_3 397 #define ZPL_VERSION_NORMALIZATION ZPL_VERSION_3 398 #define ZPL_VERSION_SYSATTR ZPL_VERSION_3 399 #define ZPL_VERSION_USERSPACE ZPL_VERSION_4 400 401 /* Rewind request information */ 402 #define ZPOOL_NO_REWIND 0 403 #define ZPOOL_TRY_REWIND 1 /* Search for best txg, but do not rewind */ 404 #define ZPOOL_DO_REWIND 2 /* Rewind to best txg w/in deferred frees */ 405 #define ZPOOL_EXTREME_REWIND 4 /* Allow extreme measures to find best txg */ 406 #define ZPOOL_REWIND_MASK 7 /* All the possible policy bits */ 407 408 typedef struct zpool_rewind_policy { 409 uint32_t zrp_request; /* rewind behavior requested */ 410 uint32_t zrp_maxmeta; /* max acceptable meta-data errors */ 411 uint32_t zrp_maxdata; /* max acceptable data errors */ 412 uint64_t zrp_txg; /* specific txg to load */ 413 } zpool_rewind_policy_t; 414 415 /* 416 * The following are configuration names used in the nvlist describing a pool's 417 * configuration. 418 */ 419 #define ZPOOL_CONFIG_VERSION "version" 420 #define ZPOOL_CONFIG_POOL_NAME "name" 421 #define ZPOOL_CONFIG_POOL_STATE "state" 422 #define ZPOOL_CONFIG_POOL_TXG "txg" 423 #define ZPOOL_CONFIG_POOL_GUID "pool_guid" 424 #define ZPOOL_CONFIG_CREATE_TXG "create_txg" 425 #define ZPOOL_CONFIG_TOP_GUID "top_guid" 426 #define ZPOOL_CONFIG_VDEV_TREE "vdev_tree" 427 #define ZPOOL_CONFIG_TYPE "type" 428 #define ZPOOL_CONFIG_CHILDREN "children" 429 #define ZPOOL_CONFIG_ID "id" 430 #define ZPOOL_CONFIG_GUID "guid" 431 #define ZPOOL_CONFIG_PATH "path" 432 #define ZPOOL_CONFIG_DEVID "devid" 433 #define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array" 434 #define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift" 435 #define ZPOOL_CONFIG_ASHIFT "ashift" 436 #define ZPOOL_CONFIG_ASIZE "asize" 437 #define ZPOOL_CONFIG_DTL "DTL" 438 #define ZPOOL_CONFIG_STATS "stats" 439 #define ZPOOL_CONFIG_WHOLE_DISK "whole_disk" 440 #define ZPOOL_CONFIG_ERRCOUNT "error_count" 441 #define ZPOOL_CONFIG_NOT_PRESENT "not_present" 442 #define ZPOOL_CONFIG_SPARES "spares" 443 #define ZPOOL_CONFIG_IS_SPARE "is_spare" 444 #define ZPOOL_CONFIG_NPARITY "nparity" 445 #define ZPOOL_CONFIG_HOSTID "hostid" 446 #define ZPOOL_CONFIG_HOSTNAME "hostname" 447 #define ZPOOL_CONFIG_UNSPARE "unspare" 448 #define ZPOOL_CONFIG_PHYS_PATH "phys_path" 449 #define ZPOOL_CONFIG_IS_LOG "is_log" 450 #define ZPOOL_CONFIG_L2CACHE "l2cache" 451 #define ZPOOL_CONFIG_HOLE_ARRAY "hole_array" 452 #define ZPOOL_CONFIG_VDEV_CHILDREN "vdev_children" 453 #define ZPOOL_CONFIG_IS_HOLE "is_hole" 454 #define ZPOOL_CONFIG_DDT_HISTOGRAM "ddt_histogram" 455 #define ZPOOL_CONFIG_DDT_OBJ_STATS "ddt_object_stats" 456 #define ZPOOL_CONFIG_DDT_STATS "ddt_stats" 457 #define ZPOOL_CONFIG_SPLIT "splitcfg" 458 #define ZPOOL_CONFIG_ORIG_GUID "orig_guid" 459 #define ZPOOL_CONFIG_SPLIT_GUID "split_guid" 460 #define ZPOOL_CONFIG_SPLIT_LIST "guid_list" 461 #define ZPOOL_CONFIG_SUSPENDED "suspended" /* not stored on disk */ 462 #define ZPOOL_CONFIG_TIMESTAMP "timestamp" /* not stored on disk */ 463 #define ZPOOL_CONFIG_BOOTFS "bootfs" /* not stored on disk */ 464 /* 465 * The persistent vdev state is stored as separate values rather than a single 466 * 'vdev_state' entry. This is because a device can be in multiple states, such 467 * as offline and degraded. 468 */ 469 #define ZPOOL_CONFIG_OFFLINE "offline" 470 #define ZPOOL_CONFIG_FAULTED "faulted" 471 #define ZPOOL_CONFIG_DEGRADED "degraded" 472 #define ZPOOL_CONFIG_REMOVED "removed" 473 #define ZPOOL_CONFIG_FRU "fru" 474 #define ZPOOL_CONFIG_AUX_STATE "aux_state" 475 476 /* Rewind policy parameters */ 477 #define ZPOOL_REWIND_POLICY "rewind-policy" 478 #define ZPOOL_REWIND_REQUEST "rewind-request" 479 #define ZPOOL_REWIND_REQUEST_TXG "rewind-request-txg" 480 #define ZPOOL_REWIND_META_THRESH "rewind-meta-thresh" 481 #define ZPOOL_REWIND_DATA_THRESH "rewind-data-thresh" 482 483 /* Rewind data discovered */ 484 #define ZPOOL_CONFIG_LOAD_TIME "rewind_txg_ts" 485 #define ZPOOL_CONFIG_LOAD_DATA_ERRORS "verify_data_errors" 486 #define ZPOOL_CONFIG_REWIND_TIME "seconds_of_rewind" 487 488 #define VDEV_TYPE_ROOT "root" 489 #define VDEV_TYPE_MIRROR "mirror" 490 #define VDEV_TYPE_REPLACING "replacing" 491 #define VDEV_TYPE_RAIDZ "raidz" 492 #define VDEV_TYPE_DISK "disk" 493 #define VDEV_TYPE_FILE "file" 494 #define VDEV_TYPE_MISSING "missing" 495 #define VDEV_TYPE_HOLE "hole" 496 #define VDEV_TYPE_SPARE "spare" 497 #define VDEV_TYPE_LOG "log" 498 #define VDEV_TYPE_L2CACHE "l2cache" 499 500 /* 501 * This is needed in userland to report the minimum necessary device size. 502 */ 503 #define SPA_MINDEVSIZE (64ULL << 20) 504 505 /* 506 * The location of the pool configuration repository, shared between kernel and 507 * userland. 508 */ 509 #define ZPOOL_CACHE "/etc/zfs/zpool.cache" 510 511 /* 512 * vdev states are ordered from least to most healthy. 513 * A vdev that's CANT_OPEN or below is considered unusable. 514 */ 515 typedef enum vdev_state { 516 VDEV_STATE_UNKNOWN = 0, /* Uninitialized vdev */ 517 VDEV_STATE_CLOSED, /* Not currently open */ 518 VDEV_STATE_OFFLINE, /* Not allowed to open */ 519 VDEV_STATE_REMOVED, /* Explicitly removed from system */ 520 VDEV_STATE_CANT_OPEN, /* Tried to open, but failed */ 521 VDEV_STATE_FAULTED, /* External request to fault device */ 522 VDEV_STATE_DEGRADED, /* Replicated vdev with unhealthy kids */ 523 VDEV_STATE_HEALTHY /* Presumed good */ 524 } vdev_state_t; 525 526 #define VDEV_STATE_ONLINE VDEV_STATE_HEALTHY 527 528 /* 529 * vdev aux states. When a vdev is in the CANT_OPEN state, the aux field 530 * of the vdev stats structure uses these constants to distinguish why. 531 */ 532 typedef enum vdev_aux { 533 VDEV_AUX_NONE, /* no error */ 534 VDEV_AUX_OPEN_FAILED, /* ldi_open_*() or vn_open() failed */ 535 VDEV_AUX_CORRUPT_DATA, /* bad label or disk contents */ 536 VDEV_AUX_NO_REPLICAS, /* insufficient number of replicas */ 537 VDEV_AUX_BAD_GUID_SUM, /* vdev guid sum doesn't match */ 538 VDEV_AUX_TOO_SMALL, /* vdev size is too small */ 539 VDEV_AUX_BAD_LABEL, /* the label is OK but invalid */ 540 VDEV_AUX_VERSION_NEWER, /* on-disk version is too new */ 541 VDEV_AUX_VERSION_OLDER, /* on-disk version is too old */ 542 VDEV_AUX_SPARED, /* hot spare used in another pool */ 543 VDEV_AUX_ERR_EXCEEDED, /* too many errors */ 544 VDEV_AUX_IO_FAILURE, /* experienced I/O failure */ 545 VDEV_AUX_BAD_LOG, /* cannot read log chain(s) */ 546 VDEV_AUX_EXTERNAL, /* external diagnosis */ 547 VDEV_AUX_SPLIT_POOL /* vdev was split off into another pool */ 548 } vdev_aux_t; 549 550 /* 551 * pool state. The following states are written to disk as part of the normal 552 * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE. The remaining 553 * states are software abstractions used at various levels to communicate 554 * pool state. 555 */ 556 typedef enum pool_state { 557 POOL_STATE_ACTIVE = 0, /* In active use */ 558 POOL_STATE_EXPORTED, /* Explicitly exported */ 559 POOL_STATE_DESTROYED, /* Explicitly destroyed */ 560 POOL_STATE_SPARE, /* Reserved for hot spare use */ 561 POOL_STATE_L2CACHE, /* Level 2 ARC device */ 562 POOL_STATE_UNINITIALIZED, /* Internal spa_t state */ 563 POOL_STATE_UNAVAIL, /* Internal libzfs state */ 564 POOL_STATE_POTENTIALLY_ACTIVE /* Internal libzfs state */ 565 } pool_state_t; 566 567 /* 568 * Scrub types. 569 */ 570 typedef enum pool_scrub_type { 571 POOL_SCRUB_NONE, 572 POOL_SCRUB_RESILVER, 573 POOL_SCRUB_EVERYTHING, 574 POOL_SCRUB_TYPES 575 } pool_scrub_type_t; 576 577 /* 578 * ZIO types. Needed to interpret vdev statistics below. 579 */ 580 typedef enum zio_type { 581 ZIO_TYPE_NULL = 0, 582 ZIO_TYPE_READ, 583 ZIO_TYPE_WRITE, 584 ZIO_TYPE_FREE, 585 ZIO_TYPE_CLAIM, 586 ZIO_TYPE_IOCTL, 587 ZIO_TYPES 588 } zio_type_t; 589 590 /* 591 * Vdev statistics. Note: all fields should be 64-bit because this 592 * is passed between kernel and userland as an nvlist uint64 array. 593 */ 594 typedef struct vdev_stat { 595 hrtime_t vs_timestamp; /* time since vdev load */ 596 uint64_t vs_state; /* vdev state */ 597 uint64_t vs_aux; /* see vdev_aux_t */ 598 uint64_t vs_alloc; /* space allocated */ 599 uint64_t vs_space; /* total capacity */ 600 uint64_t vs_dspace; /* deflated capacity */ 601 uint64_t vs_rsize; /* replaceable dev size */ 602 uint64_t vs_ops[ZIO_TYPES]; /* operation count */ 603 uint64_t vs_bytes[ZIO_TYPES]; /* bytes read/written */ 604 uint64_t vs_read_errors; /* read errors */ 605 uint64_t vs_write_errors; /* write errors */ 606 uint64_t vs_checksum_errors; /* checksum errors */ 607 uint64_t vs_self_healed; /* self-healed bytes */ 608 uint64_t vs_scrub_type; /* pool_scrub_type_t */ 609 uint64_t vs_scrub_complete; /* completed? */ 610 uint64_t vs_scrub_examined; /* bytes examined; top */ 611 uint64_t vs_scrub_repaired; /* bytes repaired; leaf */ 612 uint64_t vs_scrub_errors; /* errors during scrub */ 613 uint64_t vs_scrub_start; /* UTC scrub start time */ 614 uint64_t vs_scrub_end; /* UTC scrub end time */ 615 } vdev_stat_t; 616 617 /* 618 * DDT statistics. Note: all fields should be 64-bit because this 619 * is passed between kernel and userland as an nvlist uint64 array. 620 */ 621 typedef struct ddt_object { 622 uint64_t ddo_count; /* number of elments in ddt */ 623 uint64_t ddo_dspace; /* size of ddt on disk */ 624 uint64_t ddo_mspace; /* size of ddt in-core */ 625 } ddt_object_t; 626 627 typedef struct ddt_stat { 628 uint64_t dds_blocks; /* blocks */ 629 uint64_t dds_lsize; /* logical size */ 630 uint64_t dds_psize; /* physical size */ 631 uint64_t dds_dsize; /* deflated allocated size */ 632 uint64_t dds_ref_blocks; /* referenced blocks */ 633 uint64_t dds_ref_lsize; /* referenced lsize * refcnt */ 634 uint64_t dds_ref_psize; /* referenced psize * refcnt */ 635 uint64_t dds_ref_dsize; /* referenced dsize * refcnt */ 636 } ddt_stat_t; 637 638 typedef struct ddt_histogram { 639 ddt_stat_t ddh_stat[64]; /* power-of-two histogram buckets */ 640 } ddt_histogram_t; 641 642 #define ZVOL_DRIVER "zvol" 643 #define ZFS_DRIVER "zfs" 644 #define ZFS_DEV "/dev/zfs" 645 646 /* general zvol path */ 647 #define ZVOL_DIR "/dev/zvol" 648 /* expansion */ 649 #define ZVOL_PSEUDO_DEV "/devices/pseudo/zfs@0:" 650 /* for dump and swap */ 651 #define ZVOL_FULL_DEV_DIR ZVOL_DIR "/dsk/" 652 #define ZVOL_FULL_RDEV_DIR ZVOL_DIR "/rdsk/" 653 654 #define ZVOL_PROP_NAME "name" 655 656 /* 657 * /dev/zfs ioctl numbers. 658 */ 659 #define ZFS_IOC ('Z' << 8) 660 661 typedef enum zfs_ioc { 662 ZFS_IOC_POOL_CREATE = ZFS_IOC, 663 ZFS_IOC_POOL_DESTROY, 664 ZFS_IOC_POOL_IMPORT, 665 ZFS_IOC_POOL_EXPORT, 666 ZFS_IOC_POOL_CONFIGS, 667 ZFS_IOC_POOL_STATS, 668 ZFS_IOC_POOL_TRYIMPORT, 669 ZFS_IOC_POOL_SCRUB, 670 ZFS_IOC_POOL_FREEZE, 671 ZFS_IOC_POOL_UPGRADE, 672 ZFS_IOC_POOL_GET_HISTORY, 673 ZFS_IOC_VDEV_ADD, 674 ZFS_IOC_VDEV_REMOVE, 675 ZFS_IOC_VDEV_SET_STATE, 676 ZFS_IOC_VDEV_ATTACH, 677 ZFS_IOC_VDEV_DETACH, 678 ZFS_IOC_VDEV_SETPATH, 679 ZFS_IOC_VDEV_SETFRU, 680 ZFS_IOC_OBJSET_STATS, 681 ZFS_IOC_OBJSET_ZPLPROPS, 682 ZFS_IOC_DATASET_LIST_NEXT, 683 ZFS_IOC_SNAPSHOT_LIST_NEXT, 684 ZFS_IOC_SET_PROP, 685 ZFS_IOC_CREATE, 686 ZFS_IOC_DESTROY, 687 ZFS_IOC_ROLLBACK, 688 ZFS_IOC_RENAME, 689 ZFS_IOC_RECV, 690 ZFS_IOC_SEND, 691 ZFS_IOC_INJECT_FAULT, 692 ZFS_IOC_CLEAR_FAULT, 693 ZFS_IOC_INJECT_LIST_NEXT, 694 ZFS_IOC_ERROR_LOG, 695 ZFS_IOC_CLEAR, 696 ZFS_IOC_PROMOTE, 697 ZFS_IOC_DESTROY_SNAPS, 698 ZFS_IOC_SNAPSHOT, 699 ZFS_IOC_DSOBJ_TO_DSNAME, 700 ZFS_IOC_OBJ_TO_PATH, 701 ZFS_IOC_POOL_SET_PROPS, 702 ZFS_IOC_POOL_GET_PROPS, 703 ZFS_IOC_SET_FSACL, 704 ZFS_IOC_GET_FSACL, 705 ZFS_IOC_ISCSI_PERM_CHECK, 706 ZFS_IOC_SHARE, 707 ZFS_IOC_INHERIT_PROP, 708 ZFS_IOC_SMB_ACL, 709 ZFS_IOC_USERSPACE_ONE, 710 ZFS_IOC_USERSPACE_MANY, 711 ZFS_IOC_USERSPACE_UPGRADE, 712 ZFS_IOC_HOLD, 713 ZFS_IOC_RELEASE, 714 ZFS_IOC_GET_HOLDS, 715 ZFS_IOC_OBJSET_RECVD_PROPS, 716 ZFS_IOC_VDEV_SPLIT 717 } zfs_ioc_t; 718 719 /* 720 * Internal SPA load state. Used by FMA diagnosis engine. 721 */ 722 typedef enum { 723 SPA_LOAD_NONE, /* no load in progress */ 724 SPA_LOAD_OPEN, /* normal open */ 725 SPA_LOAD_IMPORT, /* import in progress */ 726 SPA_LOAD_TRYIMPORT, /* tryimport in progress */ 727 SPA_LOAD_RECOVER, /* recovery requested */ 728 SPA_LOAD_ERROR /* load failed */ 729 } spa_load_state_t; 730 731 /* 732 * Bookmark name values. 733 */ 734 #define ZPOOL_ERR_LIST "error list" 735 #define ZPOOL_ERR_DATASET "dataset" 736 #define ZPOOL_ERR_OBJECT "object" 737 738 #define HIS_MAX_RECORD_LEN (MAXPATHLEN + MAXPATHLEN + 1) 739 740 /* 741 * The following are names used in the nvlist describing 742 * the pool's history log. 743 */ 744 #define ZPOOL_HIST_RECORD "history record" 745 #define ZPOOL_HIST_TIME "history time" 746 #define ZPOOL_HIST_CMD "history command" 747 #define ZPOOL_HIST_WHO "history who" 748 #define ZPOOL_HIST_ZONE "history zone" 749 #define ZPOOL_HIST_HOST "history hostname" 750 #define ZPOOL_HIST_TXG "history txg" 751 #define ZPOOL_HIST_INT_EVENT "history internal event" 752 #define ZPOOL_HIST_INT_STR "history internal str" 753 754 /* 755 * Flags for ZFS_IOC_VDEV_SET_STATE 756 */ 757 #define ZFS_ONLINE_CHECKREMOVE 0x1 758 #define ZFS_ONLINE_UNSPARE 0x2 759 #define ZFS_ONLINE_FORCEFAULT 0x4 760 #define ZFS_ONLINE_EXPAND 0x8 761 #define ZFS_OFFLINE_TEMPORARY 0x1 762 763 /* 764 * Sysevent payload members. ZFS will generate the following sysevents with the 765 * given payloads: 766 * 767 * ESC_ZFS_RESILVER_START 768 * ESC_ZFS_RESILVER_END 769 * ESC_ZFS_POOL_DESTROY 770 * 771 * ZFS_EV_POOL_NAME DATA_TYPE_STRING 772 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64 773 * 774 * ESC_ZFS_VDEV_REMOVE 775 * ESC_ZFS_VDEV_CLEAR 776 * ESC_ZFS_VDEV_CHECK 777 * 778 * ZFS_EV_POOL_NAME DATA_TYPE_STRING 779 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64 780 * ZFS_EV_VDEV_PATH DATA_TYPE_STRING (optional) 781 * ZFS_EV_VDEV_GUID DATA_TYPE_UINT64 782 */ 783 #define ZFS_EV_POOL_NAME "pool_name" 784 #define ZFS_EV_POOL_GUID "pool_guid" 785 #define ZFS_EV_VDEV_PATH "vdev_path" 786 #define ZFS_EV_VDEV_GUID "vdev_guid" 787 788 /* 789 * Note: This is encoded on-disk, so new events must be added to the 790 * end, and unused events can not be removed. Be sure to edit 791 * libzfs_pool.c: hist_event_table[]. 792 */ 793 typedef enum history_internal_events { 794 LOG_NO_EVENT = 0, 795 LOG_POOL_CREATE, 796 LOG_POOL_VDEV_ADD, 797 LOG_POOL_REMOVE, 798 LOG_POOL_DESTROY, 799 LOG_POOL_EXPORT, 800 LOG_POOL_IMPORT, 801 LOG_POOL_VDEV_ATTACH, 802 LOG_POOL_VDEV_REPLACE, 803 LOG_POOL_VDEV_DETACH, 804 LOG_POOL_VDEV_ONLINE, 805 LOG_POOL_VDEV_OFFLINE, 806 LOG_POOL_UPGRADE, 807 LOG_POOL_CLEAR, 808 LOG_POOL_SCRUB, 809 LOG_POOL_PROPSET, 810 LOG_DS_CREATE, 811 LOG_DS_CLONE, 812 LOG_DS_DESTROY, 813 LOG_DS_DESTROY_BEGIN, 814 LOG_DS_INHERIT, 815 LOG_DS_PROPSET, 816 LOG_DS_QUOTA, 817 LOG_DS_PERM_UPDATE, 818 LOG_DS_PERM_REMOVE, 819 LOG_DS_PERM_WHO_REMOVE, 820 LOG_DS_PROMOTE, 821 LOG_DS_RECEIVE, 822 LOG_DS_RENAME, 823 LOG_DS_RESERVATION, 824 LOG_DS_REPLAY_INC_SYNC, 825 LOG_DS_REPLAY_FULL_SYNC, 826 LOG_DS_ROLLBACK, 827 LOG_DS_SNAPSHOT, 828 LOG_DS_UPGRADE, 829 LOG_DS_REFQUOTA, 830 LOG_DS_REFRESERV, 831 LOG_POOL_SCRUB_DONE, 832 LOG_DS_USER_HOLD, 833 LOG_DS_USER_RELEASE, 834 LOG_POOL_SPLIT, 835 LOG_END 836 } history_internal_events_t; 837 838 #ifdef __cplusplus 839 } 840 #endif 841 842 #endif /* _SYS_FS_ZFS_H */ 843