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.
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.
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]
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
25 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
26 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
29 /* Portions Copyright 2010 Robert Milkowski */
41 * Types and constants shared between userland and the kernel.
45 * Each dataset can be one of the following types. These constants can be
46 * combined into masks that can be passed to various functions.
49 ZFS_TYPE_FILESYSTEM
= (1 << 0),
50 ZFS_TYPE_SNAPSHOT
= (1 << 1),
51 ZFS_TYPE_VOLUME
= (1 << 2),
52 ZFS_TYPE_POOL
= (1 << 3),
53 ZFS_TYPE_BOOKMARK
= (1 << 4)
56 typedef enum dmu_objset_type
{
61 DMU_OST_OTHER
, /* For testing only! */
62 DMU_OST_ANY
, /* Be careful! */
66 #define ZFS_TYPE_DATASET \
67 (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT)
69 #define ZAP_MAXNAMELEN 256
70 #define ZAP_MAXVALUELEN (1024 * 8)
71 #define ZAP_OLDMAXVALUELEN 1024
72 #define ZFS_MAX_DATASET_NAME_LEN 256
75 * Dataset properties are identified by these constants and must be added to
76 * the end of this list to ensure that external consumers are not affected
77 * by the change. If you make any changes to this list, be sure to update
78 * the property table in module/zcommon/zfs_prop.c.
86 ZFS_PROP_COMPRESSRATIO
,
92 ZFS_PROP_VOLBLOCKSIZE
,
105 ZFS_PROP_PRIVATE
, /* not exposed to user, temporary */
107 ZFS_PROP_CREATETXG
, /* not exposed to the user */
108 ZFS_PROP_NAME
, /* not exposed to the user */
110 ZFS_PROP_ISCSIOPTIONS
, /* not exposed to the user */
112 ZFS_PROP_NUMCLONES
, /* not exposed to the user */
122 ZFS_PROP_REFRESERVATION
,
124 ZFS_PROP_PRIMARYCACHE
,
125 ZFS_PROP_SECONDARYCACHE
,
129 ZFS_PROP_USEDREFRESERV
,
130 ZFS_PROP_USERACCOUNTING
, /* not exposed to the user */
131 ZFS_PROP_STMF_SHAREINFO
, /* not exposed to the user */
132 ZFS_PROP_DEFER_DESTROY
,
135 ZFS_PROP_UNIQUE
, /* not exposed to the user */
136 ZFS_PROP_OBJSETID
, /* not exposed to the user */
143 ZFS_PROP_LOGICALUSED
,
144 ZFS_PROP_LOGICALREFERENCED
,
145 ZFS_PROP_INCONSISTENT
, /* not exposed to the user */
146 ZFS_PROP_FILESYSTEM_LIMIT
,
147 ZFS_PROP_SNAPSHOT_LIMIT
,
148 ZFS_PROP_FILESYSTEM_COUNT
,
149 ZFS_PROP_SNAPSHOT_COUNT
,
152 ZFS_PROP_SELINUX_CONTEXT
,
153 ZFS_PROP_SELINUX_FSCONTEXT
,
154 ZFS_PROP_SELINUX_DEFCONTEXT
,
155 ZFS_PROP_SELINUX_ROOTCONTEXT
,
157 ZFS_PROP_REDUNDANT_METADATA
,
167 ZFS_NUM_USERQUOTA_PROPS
168 } zfs_userquota_prop_t
;
170 extern const char *zfs_userquota_prop_prefixes
[ZFS_NUM_USERQUOTA_PROPS
];
173 * Pool properties are identified by these constants and must be added to the
174 * end of this list to ensure that external consumers are not affected
175 * by the change. If you make any changes to this list, be sure to update
176 * the property table in module/zcommon/zpool_prop.c.
187 ZPOOL_PROP_DELEGATION
,
188 ZPOOL_PROP_AUTOREPLACE
,
189 ZPOOL_PROP_CACHEFILE
,
190 ZPOOL_PROP_FAILUREMODE
,
191 ZPOOL_PROP_LISTSNAPS
,
192 ZPOOL_PROP_AUTOEXPAND
,
193 ZPOOL_PROP_DEDUPDITTO
,
194 ZPOOL_PROP_DEDUPRATIO
,
196 ZPOOL_PROP_ALLOCATED
,
202 ZPOOL_PROP_FRAGMENTATION
,
204 ZPOOL_PROP_MAXBLOCKSIZE
,
209 /* Small enough to not hog a whole line of printout in zpool(1M). */
210 #define ZPROP_MAX_COMMENT 32
212 #define ZPROP_CONT -2
213 #define ZPROP_INVAL -1
215 #define ZPROP_VALUE "value"
216 #define ZPROP_SOURCE "source"
219 ZPROP_SRC_NONE
= 0x1,
220 ZPROP_SRC_DEFAULT
= 0x2,
221 ZPROP_SRC_TEMPORARY
= 0x4,
222 ZPROP_SRC_LOCAL
= 0x8,
223 ZPROP_SRC_INHERITED
= 0x10,
224 ZPROP_SRC_RECEIVED
= 0x20
227 #define ZPROP_SRC_ALL 0x3f
229 #define ZPROP_SOURCE_VAL_RECVD "$recvd"
230 #define ZPROP_N_MORE_ERRORS "N_MORE_ERRORS"
232 * Dataset flag implemented as a special entry in the props zap object
233 * indicating that the dataset has received properties on or after
234 * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties
235 * just as it did in earlier versions, and thereafter, local properties are
238 #define ZPROP_HAS_RECVD "$hasrecvd"
241 ZPROP_ERR_NOCLEAR
= 0x1, /* failure to clear existing props */
242 ZPROP_ERR_NORESTORE
= 0x2 /* failure to restore props on error */
245 typedef int (*zprop_func
)(int, void *);
248 * Properties to be set on the root file system of a new pool
249 * are stuffed into their own nvlist, which is then included in
250 * the properties nvlist with the pool properties.
252 #define ZPOOL_ROOTFS_PROPS "root-props-nvl"
255 * Dataset property functions shared between libzfs and kernel.
257 const char *zfs_prop_default_string(zfs_prop_t
);
258 uint64_t zfs_prop_default_numeric(zfs_prop_t
);
259 boolean_t
zfs_prop_readonly(zfs_prop_t
);
260 boolean_t
zfs_prop_inheritable(zfs_prop_t
);
261 boolean_t
zfs_prop_setonce(zfs_prop_t
);
262 const char *zfs_prop_to_name(zfs_prop_t
);
263 zfs_prop_t
zfs_name_to_prop(const char *);
264 boolean_t
zfs_prop_user(const char *);
265 boolean_t
zfs_prop_userquota(const char *);
266 boolean_t
zfs_prop_written(const char *);
267 int zfs_prop_index_to_string(zfs_prop_t
, uint64_t, const char **);
268 int zfs_prop_string_to_index(zfs_prop_t
, const char *, uint64_t *);
269 uint64_t zfs_prop_random_value(zfs_prop_t
, uint64_t seed
);
270 boolean_t
zfs_prop_valid_for_type(int, zfs_type_t
, boolean_t
);
273 * Pool property functions shared between libzfs and kernel.
275 zpool_prop_t
zpool_name_to_prop(const char *);
276 const char *zpool_prop_to_name(zpool_prop_t
);
277 const char *zpool_prop_default_string(zpool_prop_t
);
278 uint64_t zpool_prop_default_numeric(zpool_prop_t
);
279 boolean_t
zpool_prop_readonly(zpool_prop_t
);
280 boolean_t
zpool_prop_feature(const char *);
281 boolean_t
zpool_prop_unsupported(const char *);
282 int zpool_prop_index_to_string(zpool_prop_t
, uint64_t, const char **);
283 int zpool_prop_string_to_index(zpool_prop_t
, const char *, uint64_t *);
284 uint64_t zpool_prop_random_value(zpool_prop_t
, uint64_t seed
);
287 * Definitions for the Delegation.
290 ZFS_DELEG_WHO_UNKNOWN
= 0,
291 ZFS_DELEG_USER
= 'u',
292 ZFS_DELEG_USER_SETS
= 'U',
293 ZFS_DELEG_GROUP
= 'g',
294 ZFS_DELEG_GROUP_SETS
= 'G',
295 ZFS_DELEG_EVERYONE
= 'e',
296 ZFS_DELEG_EVERYONE_SETS
= 'E',
297 ZFS_DELEG_CREATE
= 'c',
298 ZFS_DELEG_CREATE_SETS
= 'C',
299 ZFS_DELEG_NAMED_SET
= 's',
300 ZFS_DELEG_NAMED_SET_SETS
= 'S'
301 } zfs_deleg_who_type_t
;
305 ZFS_DELEG_PERM_LOCAL
= 1,
306 ZFS_DELEG_PERM_DESCENDENT
= 2,
307 ZFS_DELEG_PERM_LOCALDESCENDENT
= 3,
308 ZFS_DELEG_PERM_CREATE
= 4
309 } zfs_deleg_inherit_t
;
311 #define ZFS_DELEG_PERM_UID "uid"
312 #define ZFS_DELEG_PERM_GID "gid"
313 #define ZFS_DELEG_PERM_GROUPS "groups"
315 #define ZFS_MLSLABEL_DEFAULT "none"
317 #define ZFS_SMB_ACL_SRC "src"
318 #define ZFS_SMB_ACL_TARGET "target"
321 ZFS_CANMOUNT_OFF
= 0,
323 ZFS_CANMOUNT_NOAUTO
= 2
324 } zfs_canmount_type_t
;
327 ZFS_LOGBIAS_LATENCY
= 0,
328 ZFS_LOGBIAS_THROUGHPUT
= 1
331 typedef enum zfs_share_op
{
338 typedef enum zfs_smb_acl_op
{
345 typedef enum zfs_cache_type
{
347 ZFS_CACHE_METADATA
= 1,
352 ZFS_SYNC_STANDARD
= 0,
354 ZFS_SYNC_DISABLED
= 2
364 ZFS_REDUNDANT_METADATA_ALL
,
365 ZFS_REDUNDANT_METADATA_MOST
366 } zfs_redundant_metadata_type_t
;
369 * On-disk version number.
371 #define SPA_VERSION_1 1ULL
372 #define SPA_VERSION_2 2ULL
373 #define SPA_VERSION_3 3ULL
374 #define SPA_VERSION_4 4ULL
375 #define SPA_VERSION_5 5ULL
376 #define SPA_VERSION_6 6ULL
377 #define SPA_VERSION_7 7ULL
378 #define SPA_VERSION_8 8ULL
379 #define SPA_VERSION_9 9ULL
380 #define SPA_VERSION_10 10ULL
381 #define SPA_VERSION_11 11ULL
382 #define SPA_VERSION_12 12ULL
383 #define SPA_VERSION_13 13ULL
384 #define SPA_VERSION_14 14ULL
385 #define SPA_VERSION_15 15ULL
386 #define SPA_VERSION_16 16ULL
387 #define SPA_VERSION_17 17ULL
388 #define SPA_VERSION_18 18ULL
389 #define SPA_VERSION_19 19ULL
390 #define SPA_VERSION_20 20ULL
391 #define SPA_VERSION_21 21ULL
392 #define SPA_VERSION_22 22ULL
393 #define SPA_VERSION_23 23ULL
394 #define SPA_VERSION_24 24ULL
395 #define SPA_VERSION_25 25ULL
396 #define SPA_VERSION_26 26ULL
397 #define SPA_VERSION_27 27ULL
398 #define SPA_VERSION_28 28ULL
399 #define SPA_VERSION_5000 5000ULL
402 * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk
403 * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*},
404 * and do the appropriate changes. Also bump the version number in
405 * usr/src/grub/capability.
407 #define SPA_VERSION SPA_VERSION_5000
408 #define SPA_VERSION_STRING "5000"
411 * Symbolic names for the changes that caused a SPA_VERSION switch.
412 * Used in the code when checking for presence or absence of a feature.
413 * Feel free to define multiple symbolic names for each version if there
414 * were multiple changes to on-disk structures during that version.
416 * NOTE: When checking the current SPA_VERSION in your code, be sure
417 * to use spa_version() since it reports the version of the
418 * last synced uberblock. Checking the in-flight version can
419 * be dangerous in some cases.
421 #define SPA_VERSION_INITIAL SPA_VERSION_1
422 #define SPA_VERSION_DITTO_BLOCKS SPA_VERSION_2
423 #define SPA_VERSION_SPARES SPA_VERSION_3
424 #define SPA_VERSION_RAIDZ2 SPA_VERSION_3
425 #define SPA_VERSION_BPOBJ_ACCOUNT SPA_VERSION_3
426 #define SPA_VERSION_RAIDZ_DEFLATE SPA_VERSION_3
427 #define SPA_VERSION_DNODE_BYTES SPA_VERSION_3
428 #define SPA_VERSION_ZPOOL_HISTORY SPA_VERSION_4
429 #define SPA_VERSION_GZIP_COMPRESSION SPA_VERSION_5
430 #define SPA_VERSION_BOOTFS SPA_VERSION_6
431 #define SPA_VERSION_SLOGS SPA_VERSION_7
432 #define SPA_VERSION_DELEGATED_PERMS SPA_VERSION_8
433 #define SPA_VERSION_FUID SPA_VERSION_9
434 #define SPA_VERSION_REFRESERVATION SPA_VERSION_9
435 #define SPA_VERSION_REFQUOTA SPA_VERSION_9
436 #define SPA_VERSION_UNIQUE_ACCURATE SPA_VERSION_9
437 #define SPA_VERSION_L2CACHE SPA_VERSION_10
438 #define SPA_VERSION_NEXT_CLONES SPA_VERSION_11
439 #define SPA_VERSION_ORIGIN SPA_VERSION_11
440 #define SPA_VERSION_DSL_SCRUB SPA_VERSION_11
441 #define SPA_VERSION_SNAP_PROPS SPA_VERSION_12
442 #define SPA_VERSION_USED_BREAKDOWN SPA_VERSION_13
443 #define SPA_VERSION_PASSTHROUGH_X SPA_VERSION_14
444 #define SPA_VERSION_USERSPACE SPA_VERSION_15
445 #define SPA_VERSION_STMF_PROP SPA_VERSION_16
446 #define SPA_VERSION_RAIDZ3 SPA_VERSION_17
447 #define SPA_VERSION_USERREFS SPA_VERSION_18
448 #define SPA_VERSION_HOLES SPA_VERSION_19
449 #define SPA_VERSION_ZLE_COMPRESSION SPA_VERSION_20
450 #define SPA_VERSION_DEDUP SPA_VERSION_21
451 #define SPA_VERSION_RECVD_PROPS SPA_VERSION_22
452 #define SPA_VERSION_SLIM_ZIL SPA_VERSION_23
453 #define SPA_VERSION_SA SPA_VERSION_24
454 #define SPA_VERSION_SCAN SPA_VERSION_25
455 #define SPA_VERSION_DIR_CLONES SPA_VERSION_26
456 #define SPA_VERSION_DEADLISTS SPA_VERSION_26
457 #define SPA_VERSION_FAST_SNAP SPA_VERSION_27
458 #define SPA_VERSION_MULTI_REPLACE SPA_VERSION_28
459 #define SPA_VERSION_BEFORE_FEATURES SPA_VERSION_28
460 #define SPA_VERSION_FEATURES SPA_VERSION_5000
462 #define SPA_VERSION_IS_SUPPORTED(v) \
463 (((v) >= SPA_VERSION_INITIAL && (v) <= SPA_VERSION_BEFORE_FEATURES) || \
464 ((v) >= SPA_VERSION_FEATURES && (v) <= SPA_VERSION))
467 * ZPL version - rev'd whenever an incompatible on-disk format change
468 * occurs. This is independent of SPA/DMU/ZAP versioning. You must
469 * also update the version_table[] and help message in zfs_prop.c.
471 * When changing, be sure to teach GRUB how to read the new format!
472 * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*}
474 #define ZPL_VERSION_1 1ULL
475 #define ZPL_VERSION_2 2ULL
476 #define ZPL_VERSION_3 3ULL
477 #define ZPL_VERSION_4 4ULL
478 #define ZPL_VERSION_5 5ULL
479 #define ZPL_VERSION ZPL_VERSION_5
480 #define ZPL_VERSION_STRING "5"
482 #define ZPL_VERSION_INITIAL ZPL_VERSION_1
483 #define ZPL_VERSION_DIRENT_TYPE ZPL_VERSION_2
484 #define ZPL_VERSION_FUID ZPL_VERSION_3
485 #define ZPL_VERSION_NORMALIZATION ZPL_VERSION_3
486 #define ZPL_VERSION_SYSATTR ZPL_VERSION_3
487 #define ZPL_VERSION_USERSPACE ZPL_VERSION_4
488 #define ZPL_VERSION_SA ZPL_VERSION_5
490 /* Rewind request information */
491 #define ZPOOL_NO_REWIND 1 /* No policy - default behavior */
492 #define ZPOOL_NEVER_REWIND 2 /* Do not search for best txg or rewind */
493 #define ZPOOL_TRY_REWIND 4 /* Search for best txg, but do not rewind */
494 #define ZPOOL_DO_REWIND 8 /* Rewind to best txg w/in deferred frees */
495 #define ZPOOL_EXTREME_REWIND 16 /* Allow extreme measures to find best txg */
496 #define ZPOOL_REWIND_MASK 28 /* All the possible rewind bits */
497 #define ZPOOL_REWIND_POLICIES 31 /* All the possible policy bits */
499 typedef struct zpool_rewind_policy
{
500 uint32_t zrp_request
; /* rewind behavior requested */
501 uint64_t zrp_maxmeta
; /* max acceptable meta-data errors */
502 uint64_t zrp_maxdata
; /* max acceptable data errors */
503 uint64_t zrp_txg
; /* specific txg to load */
504 } zpool_rewind_policy_t
;
507 * The following are configuration names used in the nvlist describing a pool's
510 #define ZPOOL_CONFIG_VERSION "version"
511 #define ZPOOL_CONFIG_POOL_NAME "name"
512 #define ZPOOL_CONFIG_POOL_STATE "state"
513 #define ZPOOL_CONFIG_POOL_TXG "txg"
514 #define ZPOOL_CONFIG_POOL_GUID "pool_guid"
515 #define ZPOOL_CONFIG_CREATE_TXG "create_txg"
516 #define ZPOOL_CONFIG_TOP_GUID "top_guid"
517 #define ZPOOL_CONFIG_VDEV_TREE "vdev_tree"
518 #define ZPOOL_CONFIG_TYPE "type"
519 #define ZPOOL_CONFIG_CHILDREN "children"
520 #define ZPOOL_CONFIG_ID "id"
521 #define ZPOOL_CONFIG_GUID "guid"
522 #define ZPOOL_CONFIG_PATH "path"
523 #define ZPOOL_CONFIG_DEVID "devid"
524 #define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array"
525 #define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift"
526 #define ZPOOL_CONFIG_ASHIFT "ashift"
527 #define ZPOOL_CONFIG_ASIZE "asize"
528 #define ZPOOL_CONFIG_DTL "DTL"
529 #define ZPOOL_CONFIG_SCAN_STATS "scan_stats" /* not stored on disk */
530 #define ZPOOL_CONFIG_VDEV_STATS "vdev_stats" /* not stored on disk */
531 #define ZPOOL_CONFIG_WHOLE_DISK "whole_disk"
532 #define ZPOOL_CONFIG_ERRCOUNT "error_count"
533 #define ZPOOL_CONFIG_NOT_PRESENT "not_present"
534 #define ZPOOL_CONFIG_SPARES "spares"
535 #define ZPOOL_CONFIG_IS_SPARE "is_spare"
536 #define ZPOOL_CONFIG_NPARITY "nparity"
537 #define ZPOOL_CONFIG_HOSTID "hostid"
538 #define ZPOOL_CONFIG_HOSTNAME "hostname"
539 #define ZPOOL_CONFIG_LOADED_TIME "initial_load_time"
540 #define ZPOOL_CONFIG_UNSPARE "unspare"
541 #define ZPOOL_CONFIG_PHYS_PATH "phys_path"
542 #define ZPOOL_CONFIG_IS_LOG "is_log"
543 #define ZPOOL_CONFIG_L2CACHE "l2cache"
544 #define ZPOOL_CONFIG_HOLE_ARRAY "hole_array"
545 #define ZPOOL_CONFIG_VDEV_CHILDREN "vdev_children"
546 #define ZPOOL_CONFIG_IS_HOLE "is_hole"
547 #define ZPOOL_CONFIG_DDT_HISTOGRAM "ddt_histogram"
548 #define ZPOOL_CONFIG_DDT_OBJ_STATS "ddt_object_stats"
549 #define ZPOOL_CONFIG_DDT_STATS "ddt_stats"
550 #define ZPOOL_CONFIG_SPLIT "splitcfg"
551 #define ZPOOL_CONFIG_ORIG_GUID "orig_guid"
552 #define ZPOOL_CONFIG_SPLIT_GUID "split_guid"
553 #define ZPOOL_CONFIG_SPLIT_LIST "guid_list"
554 #define ZPOOL_CONFIG_REMOVING "removing"
555 #define ZPOOL_CONFIG_RESILVER_TXG "resilver_txg"
556 #define ZPOOL_CONFIG_COMMENT "comment"
557 #define ZPOOL_CONFIG_SUSPENDED "suspended" /* not stored on disk */
558 #define ZPOOL_CONFIG_TIMESTAMP "timestamp" /* not stored on disk */
559 #define ZPOOL_CONFIG_BOOTFS "bootfs" /* not stored on disk */
560 #define ZPOOL_CONFIG_MISSING_DEVICES "missing_vdevs" /* not stored on disk */
561 #define ZPOOL_CONFIG_LOAD_INFO "load_info" /* not stored on disk */
562 #define ZPOOL_CONFIG_REWIND_INFO "rewind_info" /* not stored on disk */
563 #define ZPOOL_CONFIG_UNSUP_FEAT "unsup_feat" /* not stored on disk */
564 #define ZPOOL_CONFIG_ENABLED_FEAT "enabled_feat" /* not stored on disk */
565 #define ZPOOL_CONFIG_CAN_RDONLY "can_rdonly" /* not stored on disk */
566 #define ZPOOL_CONFIG_FEATURES_FOR_READ "features_for_read"
567 #define ZPOOL_CONFIG_FEATURE_STATS "feature_stats" /* not stored on disk */
568 #define ZPOOL_CONFIG_ERRATA "errata" /* not stored on disk */
570 * The persistent vdev state is stored as separate values rather than a single
571 * 'vdev_state' entry. This is because a device can be in multiple states, such
572 * as offline and degraded.
574 #define ZPOOL_CONFIG_OFFLINE "offline"
575 #define ZPOOL_CONFIG_FAULTED "faulted"
576 #define ZPOOL_CONFIG_DEGRADED "degraded"
577 #define ZPOOL_CONFIG_REMOVED "removed"
578 #define ZPOOL_CONFIG_FRU "fru"
579 #define ZPOOL_CONFIG_AUX_STATE "aux_state"
581 /* Rewind policy parameters */
582 #define ZPOOL_REWIND_POLICY "rewind-policy"
583 #define ZPOOL_REWIND_REQUEST "rewind-request"
584 #define ZPOOL_REWIND_REQUEST_TXG "rewind-request-txg"
585 #define ZPOOL_REWIND_META_THRESH "rewind-meta-thresh"
586 #define ZPOOL_REWIND_DATA_THRESH "rewind-data-thresh"
588 /* Rewind data discovered */
589 #define ZPOOL_CONFIG_LOAD_TIME "rewind_txg_ts"
590 #define ZPOOL_CONFIG_LOAD_DATA_ERRORS "verify_data_errors"
591 #define ZPOOL_CONFIG_REWIND_TIME "seconds_of_rewind"
593 #define VDEV_TYPE_ROOT "root"
594 #define VDEV_TYPE_MIRROR "mirror"
595 #define VDEV_TYPE_REPLACING "replacing"
596 #define VDEV_TYPE_RAIDZ "raidz"
597 #define VDEV_TYPE_DISK "disk"
598 #define VDEV_TYPE_FILE "file"
599 #define VDEV_TYPE_MISSING "missing"
600 #define VDEV_TYPE_HOLE "hole"
601 #define VDEV_TYPE_SPARE "spare"
602 #define VDEV_TYPE_LOG "log"
603 #define VDEV_TYPE_L2CACHE "l2cache"
606 * This is needed in userland to report the minimum necessary device size.
608 #define SPA_MINDEVSIZE (64ULL << 20)
611 * Set if the fragmentation has not yet been calculated. This can happen
612 * because the space maps have not been upgraded or the histogram feature
615 #define ZFS_FRAG_INVALID UINT64_MAX
618 * The location of the pool configuration repository, shared between kernel and
621 #define ZPOOL_CACHE "/etc/zfs/zpool.cache"
624 * vdev states are ordered from least to most healthy.
625 * A vdev that's CANT_OPEN or below is considered unusable.
627 typedef enum vdev_state
{
628 VDEV_STATE_UNKNOWN
= 0, /* Uninitialized vdev */
629 VDEV_STATE_CLOSED
, /* Not currently open */
630 VDEV_STATE_OFFLINE
, /* Not allowed to open */
631 VDEV_STATE_REMOVED
, /* Explicitly removed from system */
632 VDEV_STATE_CANT_OPEN
, /* Tried to open, but failed */
633 VDEV_STATE_FAULTED
, /* External request to fault device */
634 VDEV_STATE_DEGRADED
, /* Replicated vdev with unhealthy kids */
635 VDEV_STATE_HEALTHY
/* Presumed good */
638 #define VDEV_STATE_ONLINE VDEV_STATE_HEALTHY
641 * vdev aux states. When a vdev is in the CANT_OPEN state, the aux field
642 * of the vdev stats structure uses these constants to distinguish why.
644 typedef enum vdev_aux
{
645 VDEV_AUX_NONE
, /* no error */
646 VDEV_AUX_OPEN_FAILED
, /* ldi_open_*() or vn_open() failed */
647 VDEV_AUX_CORRUPT_DATA
, /* bad label or disk contents */
648 VDEV_AUX_NO_REPLICAS
, /* insufficient number of replicas */
649 VDEV_AUX_BAD_GUID_SUM
, /* vdev guid sum doesn't match */
650 VDEV_AUX_TOO_SMALL
, /* vdev size is too small */
651 VDEV_AUX_BAD_LABEL
, /* the label is OK but invalid */
652 VDEV_AUX_VERSION_NEWER
, /* on-disk version is too new */
653 VDEV_AUX_VERSION_OLDER
, /* on-disk version is too old */
654 VDEV_AUX_UNSUP_FEAT
, /* unsupported features */
655 VDEV_AUX_SPARED
, /* hot spare used in another pool */
656 VDEV_AUX_ERR_EXCEEDED
, /* too many errors */
657 VDEV_AUX_IO_FAILURE
, /* experienced I/O failure */
658 VDEV_AUX_BAD_LOG
, /* cannot read log chain(s) */
659 VDEV_AUX_EXTERNAL
, /* external diagnosis */
660 VDEV_AUX_SPLIT_POOL
/* vdev was split off into another pool */
664 * pool state. The following states are written to disk as part of the normal
665 * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE. The remaining
666 * states are software abstractions used at various levels to communicate
669 typedef enum pool_state
{
670 POOL_STATE_ACTIVE
= 0, /* In active use */
671 POOL_STATE_EXPORTED
, /* Explicitly exported */
672 POOL_STATE_DESTROYED
, /* Explicitly destroyed */
673 POOL_STATE_SPARE
, /* Reserved for hot spare use */
674 POOL_STATE_L2CACHE
, /* Level 2 ARC device */
675 POOL_STATE_UNINITIALIZED
, /* Internal spa_t state */
676 POOL_STATE_UNAVAIL
, /* Internal libzfs state */
677 POOL_STATE_POTENTIALLY_ACTIVE
/* Internal libzfs state */
683 typedef enum pool_scan_func
{
691 * ZIO types. Needed to interpret vdev statistics below.
693 typedef enum zio_type
{
704 * Pool statistics. Note: all fields should be 64-bit because this
705 * is passed between kernel and userland as an nvlist uint64 array.
707 typedef struct pool_scan_stat
{
708 /* values stored on disk */
709 uint64_t pss_func
; /* pool_scan_func_t */
710 uint64_t pss_state
; /* dsl_scan_state_t */
711 uint64_t pss_start_time
; /* scan start time */
712 uint64_t pss_end_time
; /* scan end time */
713 uint64_t pss_to_examine
; /* total bytes to scan */
714 uint64_t pss_examined
; /* total examined bytes */
715 uint64_t pss_to_process
; /* total bytes to process */
716 uint64_t pss_processed
; /* total processed bytes */
717 uint64_t pss_errors
; /* scan errors */
719 /* values not stored on disk */
720 uint64_t pss_pass_exam
; /* examined bytes per scan pass */
721 uint64_t pss_pass_start
; /* start time of a scan pass */
724 typedef enum dsl_scan_state
{
733 * Errata described by http://zfsonlinux.org/msg/ZFS-8000-ER. The ordering
734 * of this enum must be maintained to ensure the errata identifiers map to
735 * the correct documentation. New errata may only be appended to the list
736 * and must contain corresponding documentation at the above link.
738 typedef enum zpool_errata
{
740 ZPOOL_ERRATA_ZOL_2094_SCRUB
,
741 ZPOOL_ERRATA_ZOL_2094_ASYNC_DESTROY
,
745 * Vdev statistics. Note: all fields should be 64-bit because this
746 * is passed between kernel and userland as an nvlist uint64 array.
748 typedef struct vdev_stat
{
749 hrtime_t vs_timestamp
; /* time since vdev load */
750 uint64_t vs_state
; /* vdev state */
751 uint64_t vs_aux
; /* see vdev_aux_t */
752 uint64_t vs_alloc
; /* space allocated */
753 uint64_t vs_space
; /* total capacity */
754 uint64_t vs_dspace
; /* deflated capacity */
755 uint64_t vs_rsize
; /* replaceable dev size */
756 uint64_t vs_esize
; /* expandable dev size */
757 uint64_t vs_ops
[ZIO_TYPES
]; /* operation count */
758 uint64_t vs_bytes
[ZIO_TYPES
]; /* bytes read/written */
759 uint64_t vs_read_errors
; /* read errors */
760 uint64_t vs_write_errors
; /* write errors */
761 uint64_t vs_checksum_errors
; /* checksum errors */
762 uint64_t vs_self_healed
; /* self-healed bytes */
763 uint64_t vs_scan_removing
; /* removing? */
764 uint64_t vs_scan_processed
; /* scan processed bytes */
765 uint64_t vs_fragmentation
; /* device fragmentation */
769 * DDT statistics. Note: all fields should be 64-bit because this
770 * is passed between kernel and userland as an nvlist uint64 array.
772 typedef struct ddt_object
{
773 uint64_t ddo_count
; /* number of elments in ddt */
774 uint64_t ddo_dspace
; /* size of ddt on disk */
775 uint64_t ddo_mspace
; /* size of ddt in-core */
778 typedef struct ddt_stat
{
779 uint64_t dds_blocks
; /* blocks */
780 uint64_t dds_lsize
; /* logical size */
781 uint64_t dds_psize
; /* physical size */
782 uint64_t dds_dsize
; /* deflated allocated size */
783 uint64_t dds_ref_blocks
; /* referenced blocks */
784 uint64_t dds_ref_lsize
; /* referenced lsize * refcnt */
785 uint64_t dds_ref_psize
; /* referenced psize * refcnt */
786 uint64_t dds_ref_dsize
; /* referenced dsize * refcnt */
789 typedef struct ddt_histogram
{
790 ddt_stat_t ddh_stat
[64]; /* power-of-two histogram buckets */
793 #define ZVOL_DRIVER "zvol"
794 #define ZFS_DRIVER "zfs"
795 #define ZFS_DEV "/dev/zfs"
797 /* general zvol path */
798 #define ZVOL_DIR "/dev"
800 #define ZVOL_MAJOR 230
801 #define ZVOL_MINOR_BITS 4
802 #define ZVOL_MINOR_MASK ((1U << ZVOL_MINOR_BITS) - 1)
803 #define ZVOL_MINORS (1 << 4)
804 #define ZVOL_DEV_NAME "zd"
806 #define ZVOL_PROP_NAME "name"
807 #define ZVOL_DEFAULT_BLOCKSIZE 8192
810 * /dev/zfs ioctl numbers.
812 typedef enum zfs_ioc
{
814 * Illumos - 70/128 numbers reserved.
816 ZFS_IOC_FIRST
= ('Z' << 8),
817 ZFS_IOC
= ZFS_IOC_FIRST
,
818 ZFS_IOC_POOL_CREATE
= ZFS_IOC_FIRST
,
819 ZFS_IOC_POOL_DESTROY
,
822 ZFS_IOC_POOL_CONFIGS
,
824 ZFS_IOC_POOL_TRYIMPORT
,
827 ZFS_IOC_POOL_UPGRADE
,
828 ZFS_IOC_POOL_GET_HISTORY
,
831 ZFS_IOC_VDEV_SET_STATE
,
834 ZFS_IOC_VDEV_SETPATH
,
836 ZFS_IOC_OBJSET_STATS
,
837 ZFS_IOC_OBJSET_ZPLPROPS
,
838 ZFS_IOC_DATASET_LIST_NEXT
,
839 ZFS_IOC_SNAPSHOT_LIST_NEXT
,
847 ZFS_IOC_INJECT_FAULT
,
849 ZFS_IOC_INJECT_LIST_NEXT
,
854 ZFS_IOC_DSOBJ_TO_DSNAME
,
856 ZFS_IOC_POOL_SET_PROPS
,
857 ZFS_IOC_POOL_GET_PROPS
,
861 ZFS_IOC_INHERIT_PROP
,
863 ZFS_IOC_USERSPACE_ONE
,
864 ZFS_IOC_USERSPACE_MANY
,
865 ZFS_IOC_USERSPACE_UPGRADE
,
869 ZFS_IOC_OBJSET_RECVD_PROPS
,
873 ZFS_IOC_TMP_SNAPSHOT
,
874 ZFS_IOC_OBJ_TO_STATS
,
875 ZFS_IOC_SPACE_WRITTEN
,
877 ZFS_IOC_DESTROY_SNAPS
,
880 ZFS_IOC_SEND_PROGRESS
,
886 ZFS_IOC_GET_BOOKMARKS
,
887 ZFS_IOC_DESTROY_BOOKMARKS
,
890 * Linux - 3/64 numbers reserved.
892 ZFS_IOC_LINUX
= ('Z' << 8) + 0x80,
894 ZFS_IOC_EVENTS_CLEAR
,
898 * FreeBSD - 1/64 numbers reserved.
900 ZFS_IOC_FREEBSD
= ('Z' << 8) + 0xC0,
906 * zvol ioctl to get dataset name
908 #define BLKZNAME _IOR(0x12, 125, char[ZFS_MAXNAMELEN])
911 * Internal SPA load state. Used by FMA diagnosis engine.
914 SPA_LOAD_NONE
, /* no load in progress */
915 SPA_LOAD_OPEN
, /* normal open */
916 SPA_LOAD_IMPORT
, /* import in progress */
917 SPA_LOAD_TRYIMPORT
, /* tryimport in progress */
918 SPA_LOAD_RECOVER
, /* recovery requested */
919 SPA_LOAD_ERROR
/* load failed */
923 * Bookmark name values.
925 #define ZPOOL_ERR_LIST "error list"
926 #define ZPOOL_ERR_DATASET "dataset"
927 #define ZPOOL_ERR_OBJECT "object"
929 #define HIS_MAX_RECORD_LEN (MAXPATHLEN + MAXPATHLEN + 1)
932 * The following are names used in the nvlist describing
933 * the pool's history log.
935 #define ZPOOL_HIST_RECORD "history record"
936 #define ZPOOL_HIST_TIME "history time"
937 #define ZPOOL_HIST_CMD "history command"
938 #define ZPOOL_HIST_WHO "history who"
939 #define ZPOOL_HIST_ZONE "history zone"
940 #define ZPOOL_HIST_HOST "history hostname"
941 #define ZPOOL_HIST_TXG "history txg"
942 #define ZPOOL_HIST_INT_EVENT "history internal event"
943 #define ZPOOL_HIST_INT_STR "history internal str"
944 #define ZPOOL_HIST_INT_NAME "internal_name"
945 #define ZPOOL_HIST_IOCTL "ioctl"
946 #define ZPOOL_HIST_INPUT_NVL "in_nvl"
947 #define ZPOOL_HIST_OUTPUT_NVL "out_nvl"
948 #define ZPOOL_HIST_DSNAME "dsname"
949 #define ZPOOL_HIST_DSID "dsid"
952 * Flags for ZFS_IOC_VDEV_SET_STATE
954 #define ZFS_ONLINE_CHECKREMOVE 0x1
955 #define ZFS_ONLINE_UNSPARE 0x2
956 #define ZFS_ONLINE_FORCEFAULT 0x4
957 #define ZFS_ONLINE_EXPAND 0x8
958 #define ZFS_OFFLINE_TEMPORARY 0x1
961 * Flags for ZFS_IOC_POOL_IMPORT
963 #define ZFS_IMPORT_NORMAL 0x0
964 #define ZFS_IMPORT_VERBATIM 0x1
965 #define ZFS_IMPORT_ANY_HOST 0x2
966 #define ZFS_IMPORT_MISSING_LOG 0x4
967 #define ZFS_IMPORT_ONLY 0x8
968 #define ZFS_IMPORT_TEMP_NAME 0x10
971 * Sysevent payload members. ZFS will generate the following sysevents with the
974 * ESC_ZFS_RESILVER_START
975 * ESC_ZFS_RESILVER_END
976 * ESC_ZFS_POOL_DESTROY
977 * ESC_ZFS_POOL_REGUID
979 * ZFS_EV_POOL_NAME DATA_TYPE_STRING
980 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64
982 * ESC_ZFS_VDEV_REMOVE
986 * ZFS_EV_POOL_NAME DATA_TYPE_STRING
987 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64
988 * ZFS_EV_VDEV_PATH DATA_TYPE_STRING (optional)
989 * ZFS_EV_VDEV_GUID DATA_TYPE_UINT64
991 #define ZFS_EV_POOL_NAME "pool_name"
992 #define ZFS_EV_POOL_GUID "pool_guid"
993 #define ZFS_EV_VDEV_PATH "vdev_path"
994 #define ZFS_EV_VDEV_GUID "vdev_guid"
1000 #endif /* _SYS_FS_ZFS_H */