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 by Delphix. All rights reserved.
27 /* Portions Copyright 2010 Robert Milkowski */
39 * Types and constants shared between userland and the kernel.
43 * Each dataset can be one of the following types. These constants can be
44 * combined into masks that can be passed to various functions.
47 ZFS_TYPE_FILESYSTEM
= 0x1,
48 ZFS_TYPE_SNAPSHOT
= 0x2,
49 ZFS_TYPE_VOLUME
= 0x4,
53 #define ZFS_TYPE_DATASET \
54 (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT)
56 #define ZAP_MAXNAMELEN 256
57 #define ZAP_MAXVALUELEN (1024 * 8)
58 #define ZAP_OLDMAXVALUELEN 1024
61 * Dataset properties are identified by these constants and must be added to
62 * the end of this list to ensure that external consumers are not affected
63 * by the change. If you make any changes to this list, be sure to update
64 * the property table in usr/src/common/zfs/zfs_prop.c.
72 ZFS_PROP_COMPRESSRATIO
,
78 ZFS_PROP_VOLBLOCKSIZE
,
91 ZFS_PROP_PRIVATE
, /* not exposed to user, temporary */
93 ZFS_PROP_CREATETXG
, /* not exposed to the user */
94 ZFS_PROP_NAME
, /* not exposed to the user */
96 ZFS_PROP_ISCSIOPTIONS
, /* not exposed to the user */
98 ZFS_PROP_NUMCLONES
, /* not exposed to the user */
108 ZFS_PROP_REFRESERVATION
,
110 ZFS_PROP_PRIMARYCACHE
,
111 ZFS_PROP_SECONDARYCACHE
,
115 ZFS_PROP_USEDREFRESERV
,
116 ZFS_PROP_USERACCOUNTING
, /* not exposed to the user */
117 ZFS_PROP_STMF_SHAREINFO
, /* not exposed to the user */
118 ZFS_PROP_DEFER_DESTROY
,
121 ZFS_PROP_UNIQUE
, /* not exposed to the user */
122 ZFS_PROP_OBJSETID
, /* not exposed to the user */
135 ZFS_NUM_USERQUOTA_PROPS
136 } zfs_userquota_prop_t
;
138 extern const char *zfs_userquota_prop_prefixes
[ZFS_NUM_USERQUOTA_PROPS
];
141 * Pool properties are identified by these constants and must be added to the
142 * end of this list to ensure that external consumers are not affected
143 * by the change. If you make any changes to this list, be sure to update
144 * the property table in usr/src/common/zfs/zpool_prop.c.
155 ZPOOL_PROP_DELEGATION
,
156 ZPOOL_PROP_AUTOREPLACE
,
157 ZPOOL_PROP_CACHEFILE
,
158 ZPOOL_PROP_FAILUREMODE
,
159 ZPOOL_PROP_LISTSNAPS
,
160 ZPOOL_PROP_AUTOEXPAND
,
161 ZPOOL_PROP_DEDUPDITTO
,
162 ZPOOL_PROP_DEDUPRATIO
,
164 ZPOOL_PROP_ALLOCATED
,
170 #define ZPROP_CONT -2
171 #define ZPROP_INVAL -1
173 #define ZPROP_VALUE "value"
174 #define ZPROP_SOURCE "source"
177 ZPROP_SRC_NONE
= 0x1,
178 ZPROP_SRC_DEFAULT
= 0x2,
179 ZPROP_SRC_TEMPORARY
= 0x4,
180 ZPROP_SRC_LOCAL
= 0x8,
181 ZPROP_SRC_INHERITED
= 0x10,
182 ZPROP_SRC_RECEIVED
= 0x20
185 #define ZPROP_SRC_ALL 0x3f
187 #define ZPROP_SOURCE_VAL_RECVD "$recvd"
188 #define ZPROP_N_MORE_ERRORS "N_MORE_ERRORS"
190 * Dataset flag implemented as a special entry in the props zap object
191 * indicating that the dataset has received properties on or after
192 * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties
193 * just as it did in earlier versions, and thereafter, local properties are
196 #define ZPROP_HAS_RECVD "$hasrecvd"
199 ZPROP_ERR_NOCLEAR
= 0x1, /* failure to clear existing props */
200 ZPROP_ERR_NORESTORE
= 0x2 /* failure to restore props on error */
203 typedef int (*zprop_func
)(int, void *);
206 * Properties to be set on the root file system of a new pool
207 * are stuffed into their own nvlist, which is then included in
208 * the properties nvlist with the pool properties.
210 #define ZPOOL_ROOTFS_PROPS "root-props-nvl"
213 * Dataset property functions shared between libzfs and kernel.
215 const char *zfs_prop_default_string(zfs_prop_t
);
216 uint64_t zfs_prop_default_numeric(zfs_prop_t
);
217 boolean_t
zfs_prop_readonly(zfs_prop_t
);
218 boolean_t
zfs_prop_inheritable(zfs_prop_t
);
219 boolean_t
zfs_prop_setonce(zfs_prop_t
);
220 const char *zfs_prop_to_name(zfs_prop_t
);
221 zfs_prop_t
zfs_name_to_prop(const char *);
222 boolean_t
zfs_prop_user(const char *);
223 boolean_t
zfs_prop_userquota(const char *);
224 int zfs_prop_index_to_string(zfs_prop_t
, uint64_t, const char **);
225 int zfs_prop_string_to_index(zfs_prop_t
, const char *, uint64_t *);
226 uint64_t zfs_prop_random_value(zfs_prop_t
, uint64_t seed
);
227 boolean_t
zfs_prop_valid_for_type(int, zfs_type_t
);
230 * Pool property functions shared between libzfs and kernel.
232 zpool_prop_t
zpool_name_to_prop(const char *);
233 const char *zpool_prop_to_name(zpool_prop_t
);
234 const char *zpool_prop_default_string(zpool_prop_t
);
235 uint64_t zpool_prop_default_numeric(zpool_prop_t
);
236 boolean_t
zpool_prop_readonly(zpool_prop_t
);
237 int zpool_prop_index_to_string(zpool_prop_t
, uint64_t, const char **);
238 int zpool_prop_string_to_index(zpool_prop_t
, const char *, uint64_t *);
239 uint64_t zpool_prop_random_value(zpool_prop_t
, uint64_t seed
);
242 * Definitions for the Delegation.
245 ZFS_DELEG_WHO_UNKNOWN
= 0,
246 ZFS_DELEG_USER
= 'u',
247 ZFS_DELEG_USER_SETS
= 'U',
248 ZFS_DELEG_GROUP
= 'g',
249 ZFS_DELEG_GROUP_SETS
= 'G',
250 ZFS_DELEG_EVERYONE
= 'e',
251 ZFS_DELEG_EVERYONE_SETS
= 'E',
252 ZFS_DELEG_CREATE
= 'c',
253 ZFS_DELEG_CREATE_SETS
= 'C',
254 ZFS_DELEG_NAMED_SET
= 's',
255 ZFS_DELEG_NAMED_SET_SETS
= 'S'
256 } zfs_deleg_who_type_t
;
260 ZFS_DELEG_PERM_LOCAL
= 1,
261 ZFS_DELEG_PERM_DESCENDENT
= 2,
262 ZFS_DELEG_PERM_LOCALDESCENDENT
= 3,
263 ZFS_DELEG_PERM_CREATE
= 4
264 } zfs_deleg_inherit_t
;
266 #define ZFS_DELEG_PERM_UID "uid"
267 #define ZFS_DELEG_PERM_GID "gid"
268 #define ZFS_DELEG_PERM_GROUPS "groups"
270 #define ZFS_MLSLABEL_DEFAULT "none"
272 #define ZFS_SMB_ACL_SRC "src"
273 #define ZFS_SMB_ACL_TARGET "target"
276 ZFS_CANMOUNT_OFF
= 0,
278 ZFS_CANMOUNT_NOAUTO
= 2
279 } zfs_canmount_type_t
;
282 ZFS_LOGBIAS_LATENCY
= 0,
283 ZFS_LOGBIAS_THROUGHPUT
= 1
286 typedef enum zfs_share_op
{
293 typedef enum zfs_smb_acl_op
{
300 typedef enum zfs_cache_type
{
302 ZFS_CACHE_METADATA
= 1,
307 ZFS_SYNC_STANDARD
= 0,
309 ZFS_SYNC_DISABLED
= 2
314 * On-disk version number.
316 #define SPA_VERSION_1 1ULL
317 #define SPA_VERSION_2 2ULL
318 #define SPA_VERSION_3 3ULL
319 #define SPA_VERSION_4 4ULL
320 #define SPA_VERSION_5 5ULL
321 #define SPA_VERSION_6 6ULL
322 #define SPA_VERSION_7 7ULL
323 #define SPA_VERSION_8 8ULL
324 #define SPA_VERSION_9 9ULL
325 #define SPA_VERSION_10 10ULL
326 #define SPA_VERSION_11 11ULL
327 #define SPA_VERSION_12 12ULL
328 #define SPA_VERSION_13 13ULL
329 #define SPA_VERSION_14 14ULL
330 #define SPA_VERSION_15 15ULL
331 #define SPA_VERSION_16 16ULL
332 #define SPA_VERSION_17 17ULL
333 #define SPA_VERSION_18 18ULL
334 #define SPA_VERSION_19 19ULL
335 #define SPA_VERSION_20 20ULL
336 #define SPA_VERSION_21 21ULL
337 #define SPA_VERSION_22 22ULL
338 #define SPA_VERSION_23 23ULL
339 #define SPA_VERSION_24 24ULL
340 #define SPA_VERSION_25 25ULL
341 #define SPA_VERSION_26 26ULL
342 #define SPA_VERSION_27 27ULL
343 #define SPA_VERSION_28 28ULL
346 * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk
347 * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*},
348 * and do the appropriate changes. Also bump the version number in
349 * usr/src/grub/capability.
351 #define SPA_VERSION SPA_VERSION_28
352 #define SPA_VERSION_STRING "28"
355 * Symbolic names for the changes that caused a SPA_VERSION switch.
356 * Used in the code when checking for presence or absence of a feature.
357 * Feel free to define multiple symbolic names for each version if there
358 * were multiple changes to on-disk structures during that version.
360 * NOTE: When checking the current SPA_VERSION in your code, be sure
361 * to use spa_version() since it reports the version of the
362 * last synced uberblock. Checking the in-flight version can
363 * be dangerous in some cases.
365 #define SPA_VERSION_INITIAL SPA_VERSION_1
366 #define SPA_VERSION_DITTO_BLOCKS SPA_VERSION_2
367 #define SPA_VERSION_SPARES SPA_VERSION_3
368 #define SPA_VERSION_RAIDZ2 SPA_VERSION_3
369 #define SPA_VERSION_BPOBJ_ACCOUNT SPA_VERSION_3
370 #define SPA_VERSION_RAIDZ_DEFLATE SPA_VERSION_3
371 #define SPA_VERSION_DNODE_BYTES SPA_VERSION_3
372 #define SPA_VERSION_ZPOOL_HISTORY SPA_VERSION_4
373 #define SPA_VERSION_GZIP_COMPRESSION SPA_VERSION_5
374 #define SPA_VERSION_BOOTFS SPA_VERSION_6
375 #define SPA_VERSION_SLOGS SPA_VERSION_7
376 #define SPA_VERSION_DELEGATED_PERMS SPA_VERSION_8
377 #define SPA_VERSION_FUID SPA_VERSION_9
378 #define SPA_VERSION_REFRESERVATION SPA_VERSION_9
379 #define SPA_VERSION_REFQUOTA SPA_VERSION_9
380 #define SPA_VERSION_UNIQUE_ACCURATE SPA_VERSION_9
381 #define SPA_VERSION_L2CACHE SPA_VERSION_10
382 #define SPA_VERSION_NEXT_CLONES SPA_VERSION_11
383 #define SPA_VERSION_ORIGIN SPA_VERSION_11
384 #define SPA_VERSION_DSL_SCRUB SPA_VERSION_11
385 #define SPA_VERSION_SNAP_PROPS SPA_VERSION_12
386 #define SPA_VERSION_USED_BREAKDOWN SPA_VERSION_13
387 #define SPA_VERSION_PASSTHROUGH_X SPA_VERSION_14
388 #define SPA_VERSION_USERSPACE SPA_VERSION_15
389 #define SPA_VERSION_STMF_PROP SPA_VERSION_16
390 #define SPA_VERSION_RAIDZ3 SPA_VERSION_17
391 #define SPA_VERSION_USERREFS SPA_VERSION_18
392 #define SPA_VERSION_HOLES SPA_VERSION_19
393 #define SPA_VERSION_ZLE_COMPRESSION SPA_VERSION_20
394 #define SPA_VERSION_DEDUP SPA_VERSION_21
395 #define SPA_VERSION_RECVD_PROPS SPA_VERSION_22
396 #define SPA_VERSION_SLIM_ZIL SPA_VERSION_23
397 #define SPA_VERSION_SA SPA_VERSION_24
398 #define SPA_VERSION_SCAN SPA_VERSION_25
399 #define SPA_VERSION_DIR_CLONES SPA_VERSION_26
400 #define SPA_VERSION_DEADLISTS SPA_VERSION_26
401 #define SPA_VERSION_FAST_SNAP SPA_VERSION_27
402 #define SPA_VERSION_MULTI_REPLACE SPA_VERSION_28
405 * ZPL version - rev'd whenever an incompatible on-disk format change
406 * occurs. This is independent of SPA/DMU/ZAP versioning. You must
407 * also update the version_table[] and help message in zfs_prop.c.
409 * When changing, be sure to teach GRUB how to read the new format!
410 * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*}
412 #define ZPL_VERSION_1 1ULL
413 #define ZPL_VERSION_2 2ULL
414 #define ZPL_VERSION_3 3ULL
415 #define ZPL_VERSION_4 4ULL
416 #define ZPL_VERSION_5 5ULL
417 #define ZPL_VERSION ZPL_VERSION_5
418 #define ZPL_VERSION_STRING "5"
420 #define ZPL_VERSION_INITIAL ZPL_VERSION_1
421 #define ZPL_VERSION_DIRENT_TYPE ZPL_VERSION_2
422 #define ZPL_VERSION_FUID ZPL_VERSION_3
423 #define ZPL_VERSION_NORMALIZATION ZPL_VERSION_3
424 #define ZPL_VERSION_SYSATTR ZPL_VERSION_3
425 #define ZPL_VERSION_USERSPACE ZPL_VERSION_4
426 #define ZPL_VERSION_SA ZPL_VERSION_5
428 /* Rewind request information */
429 #define ZPOOL_NO_REWIND 1 /* No policy - default behavior */
430 #define ZPOOL_NEVER_REWIND 2 /* Do not search for best txg or rewind */
431 #define ZPOOL_TRY_REWIND 4 /* Search for best txg, but do not rewind */
432 #define ZPOOL_DO_REWIND 8 /* Rewind to best txg w/in deferred frees */
433 #define ZPOOL_EXTREME_REWIND 16 /* Allow extreme measures to find best txg */
434 #define ZPOOL_REWIND_MASK 28 /* All the possible rewind bits */
435 #define ZPOOL_REWIND_POLICIES 31 /* All the possible policy bits */
437 typedef struct zpool_rewind_policy
{
438 uint32_t zrp_request
; /* rewind behavior requested */
439 uint64_t zrp_maxmeta
; /* max acceptable meta-data errors */
440 uint64_t zrp_maxdata
; /* max acceptable data errors */
441 uint64_t zrp_txg
; /* specific txg to load */
442 } zpool_rewind_policy_t
;
445 * The following are configuration names used in the nvlist describing a pool's
448 #define ZPOOL_CONFIG_VERSION "version"
449 #define ZPOOL_CONFIG_POOL_NAME "name"
450 #define ZPOOL_CONFIG_POOL_STATE "state"
451 #define ZPOOL_CONFIG_POOL_TXG "txg"
452 #define ZPOOL_CONFIG_POOL_GUID "pool_guid"
453 #define ZPOOL_CONFIG_CREATE_TXG "create_txg"
454 #define ZPOOL_CONFIG_TOP_GUID "top_guid"
455 #define ZPOOL_CONFIG_VDEV_TREE "vdev_tree"
456 #define ZPOOL_CONFIG_TYPE "type"
457 #define ZPOOL_CONFIG_CHILDREN "children"
458 #define ZPOOL_CONFIG_ID "id"
459 #define ZPOOL_CONFIG_GUID "guid"
460 #define ZPOOL_CONFIG_PATH "path"
461 #define ZPOOL_CONFIG_DEVID "devid"
462 #define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array"
463 #define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift"
464 #define ZPOOL_CONFIG_ASHIFT "ashift"
465 #define ZPOOL_CONFIG_ASIZE "asize"
466 #define ZPOOL_CONFIG_DTL "DTL"
467 #define ZPOOL_CONFIG_SCAN_STATS "scan_stats" /* not stored on disk */
468 #define ZPOOL_CONFIG_VDEV_STATS "vdev_stats" /* not stored on disk */
469 #define ZPOOL_CONFIG_WHOLE_DISK "whole_disk"
470 #define ZPOOL_CONFIG_ERRCOUNT "error_count"
471 #define ZPOOL_CONFIG_NOT_PRESENT "not_present"
472 #define ZPOOL_CONFIG_SPARES "spares"
473 #define ZPOOL_CONFIG_IS_SPARE "is_spare"
474 #define ZPOOL_CONFIG_NPARITY "nparity"
475 #define ZPOOL_CONFIG_HOSTID "hostid"
476 #define ZPOOL_CONFIG_HOSTNAME "hostname"
477 #define ZPOOL_CONFIG_LOADED_TIME "initial_load_time"
478 #define ZPOOL_CONFIG_UNSPARE "unspare"
479 #define ZPOOL_CONFIG_PHYS_PATH "phys_path"
480 #define ZPOOL_CONFIG_IS_LOG "is_log"
481 #define ZPOOL_CONFIG_L2CACHE "l2cache"
482 #define ZPOOL_CONFIG_HOLE_ARRAY "hole_array"
483 #define ZPOOL_CONFIG_VDEV_CHILDREN "vdev_children"
484 #define ZPOOL_CONFIG_IS_HOLE "is_hole"
485 #define ZPOOL_CONFIG_DDT_HISTOGRAM "ddt_histogram"
486 #define ZPOOL_CONFIG_DDT_OBJ_STATS "ddt_object_stats"
487 #define ZPOOL_CONFIG_DDT_STATS "ddt_stats"
488 #define ZPOOL_CONFIG_SPLIT "splitcfg"
489 #define ZPOOL_CONFIG_ORIG_GUID "orig_guid"
490 #define ZPOOL_CONFIG_SPLIT_GUID "split_guid"
491 #define ZPOOL_CONFIG_SPLIT_LIST "guid_list"
492 #define ZPOOL_CONFIG_REMOVING "removing"
493 #define ZPOOL_CONFIG_RESILVERING "resilvering"
494 #define ZPOOL_CONFIG_SUSPENDED "suspended" /* not stored on disk */
495 #define ZPOOL_CONFIG_TIMESTAMP "timestamp" /* not stored on disk */
496 #define ZPOOL_CONFIG_BOOTFS "bootfs" /* not stored on disk */
497 #define ZPOOL_CONFIG_MISSING_DEVICES "missing_vdevs" /* not stored on disk */
498 #define ZPOOL_CONFIG_LOAD_INFO "load_info" /* not stored on disk */
500 * The persistent vdev state is stored as separate values rather than a single
501 * 'vdev_state' entry. This is because a device can be in multiple states, such
502 * as offline and degraded.
504 #define ZPOOL_CONFIG_OFFLINE "offline"
505 #define ZPOOL_CONFIG_FAULTED "faulted"
506 #define ZPOOL_CONFIG_DEGRADED "degraded"
507 #define ZPOOL_CONFIG_REMOVED "removed"
508 #define ZPOOL_CONFIG_FRU "fru"
509 #define ZPOOL_CONFIG_AUX_STATE "aux_state"
511 /* Rewind policy parameters */
512 #define ZPOOL_REWIND_POLICY "rewind-policy"
513 #define ZPOOL_REWIND_REQUEST "rewind-request"
514 #define ZPOOL_REWIND_REQUEST_TXG "rewind-request-txg"
515 #define ZPOOL_REWIND_META_THRESH "rewind-meta-thresh"
516 #define ZPOOL_REWIND_DATA_THRESH "rewind-data-thresh"
518 /* Rewind data discovered */
519 #define ZPOOL_CONFIG_LOAD_TIME "rewind_txg_ts"
520 #define ZPOOL_CONFIG_LOAD_DATA_ERRORS "verify_data_errors"
521 #define ZPOOL_CONFIG_REWIND_TIME "seconds_of_rewind"
523 #define VDEV_TYPE_ROOT "root"
524 #define VDEV_TYPE_MIRROR "mirror"
525 #define VDEV_TYPE_REPLACING "replacing"
526 #define VDEV_TYPE_RAIDZ "raidz"
527 #define VDEV_TYPE_DISK "disk"
528 #define VDEV_TYPE_FILE "file"
529 #define VDEV_TYPE_MISSING "missing"
530 #define VDEV_TYPE_HOLE "hole"
531 #define VDEV_TYPE_SPARE "spare"
532 #define VDEV_TYPE_LOG "log"
533 #define VDEV_TYPE_L2CACHE "l2cache"
536 * This is needed in userland to report the minimum necessary device size.
538 #define SPA_MINDEVSIZE (64ULL << 20)
541 * The location of the pool configuration repository, shared between kernel and
544 #define ZPOOL_CACHE "/etc/zfs/zpool.cache"
547 * vdev states are ordered from least to most healthy.
548 * A vdev that's CANT_OPEN or below is considered unusable.
550 typedef enum vdev_state
{
551 VDEV_STATE_UNKNOWN
= 0, /* Uninitialized vdev */
552 VDEV_STATE_CLOSED
, /* Not currently open */
553 VDEV_STATE_OFFLINE
, /* Not allowed to open */
554 VDEV_STATE_REMOVED
, /* Explicitly removed from system */
555 VDEV_STATE_CANT_OPEN
, /* Tried to open, but failed */
556 VDEV_STATE_FAULTED
, /* External request to fault device */
557 VDEV_STATE_DEGRADED
, /* Replicated vdev with unhealthy kids */
558 VDEV_STATE_HEALTHY
/* Presumed good */
561 #define VDEV_STATE_ONLINE VDEV_STATE_HEALTHY
564 * vdev aux states. When a vdev is in the CANT_OPEN state, the aux field
565 * of the vdev stats structure uses these constants to distinguish why.
567 typedef enum vdev_aux
{
568 VDEV_AUX_NONE
, /* no error */
569 VDEV_AUX_OPEN_FAILED
, /* ldi_open_*() or vn_open() failed */
570 VDEV_AUX_CORRUPT_DATA
, /* bad label or disk contents */
571 VDEV_AUX_NO_REPLICAS
, /* insufficient number of replicas */
572 VDEV_AUX_BAD_GUID_SUM
, /* vdev guid sum doesn't match */
573 VDEV_AUX_TOO_SMALL
, /* vdev size is too small */
574 VDEV_AUX_BAD_LABEL
, /* the label is OK but invalid */
575 VDEV_AUX_VERSION_NEWER
, /* on-disk version is too new */
576 VDEV_AUX_VERSION_OLDER
, /* on-disk version is too old */
577 VDEV_AUX_SPARED
, /* hot spare used in another pool */
578 VDEV_AUX_ERR_EXCEEDED
, /* too many errors */
579 VDEV_AUX_IO_FAILURE
, /* experienced I/O failure */
580 VDEV_AUX_BAD_LOG
, /* cannot read log chain(s) */
581 VDEV_AUX_EXTERNAL
, /* external diagnosis */
582 VDEV_AUX_SPLIT_POOL
/* vdev was split off into another pool */
586 * pool state. The following states are written to disk as part of the normal
587 * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE. The remaining
588 * states are software abstractions used at various levels to communicate
591 typedef enum pool_state
{
592 POOL_STATE_ACTIVE
= 0, /* In active use */
593 POOL_STATE_EXPORTED
, /* Explicitly exported */
594 POOL_STATE_DESTROYED
, /* Explicitly destroyed */
595 POOL_STATE_SPARE
, /* Reserved for hot spare use */
596 POOL_STATE_L2CACHE
, /* Level 2 ARC device */
597 POOL_STATE_UNINITIALIZED
, /* Internal spa_t state */
598 POOL_STATE_UNAVAIL
, /* Internal libzfs state */
599 POOL_STATE_POTENTIALLY_ACTIVE
/* Internal libzfs state */
605 typedef enum pool_scan_func
{
613 * ZIO types. Needed to interpret vdev statistics below.
615 typedef enum zio_type
{
626 * Pool statistics. Note: all fields should be 64-bit because this
627 * is passed between kernel and userland as an nvlist uint64 array.
629 typedef struct pool_scan_stat
{
630 /* values stored on disk */
631 uint64_t pss_func
; /* pool_scan_func_t */
632 uint64_t pss_state
; /* dsl_scan_state_t */
633 uint64_t pss_start_time
; /* scan start time */
634 uint64_t pss_end_time
; /* scan end time */
635 uint64_t pss_to_examine
; /* total bytes to scan */
636 uint64_t pss_examined
; /* total examined bytes */
637 uint64_t pss_to_process
; /* total bytes to process */
638 uint64_t pss_processed
; /* total processed bytes */
639 uint64_t pss_errors
; /* scan errors */
641 /* values not stored on disk */
642 uint64_t pss_pass_exam
; /* examined bytes per scan pass */
643 uint64_t pss_pass_start
; /* start time of a scan pass */
646 typedef enum dsl_scan_state
{
656 * Vdev statistics. Note: all fields should be 64-bit because this
657 * is passed between kernel and userland as an nvlist uint64 array.
659 typedef struct vdev_stat
{
660 hrtime_t vs_timestamp
; /* time since vdev load */
661 uint64_t vs_state
; /* vdev state */
662 uint64_t vs_aux
; /* see vdev_aux_t */
663 uint64_t vs_alloc
; /* space allocated */
664 uint64_t vs_space
; /* total capacity */
665 uint64_t vs_dspace
; /* deflated capacity */
666 uint64_t vs_rsize
; /* replaceable dev size */
667 uint64_t vs_ops
[ZIO_TYPES
]; /* operation count */
668 uint64_t vs_bytes
[ZIO_TYPES
]; /* bytes read/written */
669 uint64_t vs_read_errors
; /* read errors */
670 uint64_t vs_write_errors
; /* write errors */
671 uint64_t vs_checksum_errors
; /* checksum errors */
672 uint64_t vs_self_healed
; /* self-healed bytes */
673 uint64_t vs_scan_removing
; /* removing? */
674 uint64_t vs_scan_processed
; /* scan processed bytes */
678 * DDT statistics. Note: all fields should be 64-bit because this
679 * is passed between kernel and userland as an nvlist uint64 array.
681 typedef struct ddt_object
{
682 uint64_t ddo_count
; /* number of elments in ddt */
683 uint64_t ddo_dspace
; /* size of ddt on disk */
684 uint64_t ddo_mspace
; /* size of ddt in-core */
687 typedef struct ddt_stat
{
688 uint64_t dds_blocks
; /* blocks */
689 uint64_t dds_lsize
; /* logical size */
690 uint64_t dds_psize
; /* physical size */
691 uint64_t dds_dsize
; /* deflated allocated size */
692 uint64_t dds_ref_blocks
; /* referenced blocks */
693 uint64_t dds_ref_lsize
; /* referenced lsize * refcnt */
694 uint64_t dds_ref_psize
; /* referenced psize * refcnt */
695 uint64_t dds_ref_dsize
; /* referenced dsize * refcnt */
698 typedef struct ddt_histogram
{
699 ddt_stat_t ddh_stat
[64]; /* power-of-two histogram buckets */
702 #define ZVOL_DRIVER "zvol"
703 #define ZFS_DRIVER "zfs"
704 #define ZFS_DEV "/dev/zfs"
706 /* general zvol path */
707 #define ZVOL_DIR "/dev"
709 #define ZVOL_MAJOR 230
710 #define ZVOL_MINOR_BITS 4
711 #define ZVOL_MINOR_MASK ((1U << ZVOL_MINOR_BITS) - 1)
712 #define ZVOL_MINORS (1 << 4)
713 #define ZVOL_DEV_NAME "zd"
715 #define ZVOL_PROP_NAME "name"
716 #define ZVOL_DEFAULT_BLOCKSIZE 8192
719 * /dev/zfs ioctl numbers.
721 #define ZFS_IOC ('Z' << 8)
723 typedef enum zfs_ioc
{
724 ZFS_IOC_POOL_CREATE
= ZFS_IOC
,
725 ZFS_IOC_POOL_DESTROY
,
728 ZFS_IOC_POOL_CONFIGS
,
730 ZFS_IOC_POOL_TRYIMPORT
,
733 ZFS_IOC_POOL_UPGRADE
,
734 ZFS_IOC_POOL_GET_HISTORY
,
737 ZFS_IOC_VDEV_SET_STATE
,
740 ZFS_IOC_VDEV_SETPATH
,
742 ZFS_IOC_OBJSET_STATS
,
743 ZFS_IOC_OBJSET_ZPLPROPS
,
744 ZFS_IOC_DATASET_LIST_NEXT
,
745 ZFS_IOC_SNAPSHOT_LIST_NEXT
,
747 ZFS_IOC_CREATE_MINOR
,
748 ZFS_IOC_REMOVE_MINOR
,
755 ZFS_IOC_INJECT_FAULT
,
757 ZFS_IOC_INJECT_LIST_NEXT
,
761 ZFS_IOC_DESTROY_SNAPS
,
763 ZFS_IOC_DSOBJ_TO_DSNAME
,
765 ZFS_IOC_POOL_SET_PROPS
,
766 ZFS_IOC_POOL_GET_PROPS
,
770 ZFS_IOC_INHERIT_PROP
,
772 ZFS_IOC_USERSPACE_ONE
,
773 ZFS_IOC_USERSPACE_MANY
,
774 ZFS_IOC_USERSPACE_UPGRADE
,
778 ZFS_IOC_OBJSET_RECVD_PROPS
,
782 ZFS_IOC_TMP_SNAPSHOT
,
783 ZFS_IOC_OBJ_TO_STATS
,
785 ZFS_IOC_EVENTS_CLEAR
,
789 * zvol ioctl to get dataset name
791 #define BLKZNAME _IOR(0x12,125,char[ZFS_MAXNAMELEN])
794 * Internal SPA load state. Used by FMA diagnosis engine.
797 SPA_LOAD_NONE
, /* no load in progress */
798 SPA_LOAD_OPEN
, /* normal open */
799 SPA_LOAD_IMPORT
, /* import in progress */
800 SPA_LOAD_TRYIMPORT
, /* tryimport in progress */
801 SPA_LOAD_RECOVER
, /* recovery requested */
802 SPA_LOAD_ERROR
/* load failed */
806 * Bookmark name values.
808 #define ZPOOL_ERR_LIST "error list"
809 #define ZPOOL_ERR_DATASET "dataset"
810 #define ZPOOL_ERR_OBJECT "object"
812 #define HIS_MAX_RECORD_LEN (MAXPATHLEN + MAXPATHLEN + 1)
815 * The following are names used in the nvlist describing
816 * the pool's history log.
818 #define ZPOOL_HIST_RECORD "history record"
819 #define ZPOOL_HIST_TIME "history time"
820 #define ZPOOL_HIST_CMD "history command"
821 #define ZPOOL_HIST_WHO "history who"
822 #define ZPOOL_HIST_ZONE "history zone"
823 #define ZPOOL_HIST_HOST "history hostname"
824 #define ZPOOL_HIST_TXG "history txg"
825 #define ZPOOL_HIST_INT_EVENT "history internal event"
826 #define ZPOOL_HIST_INT_STR "history internal str"
829 * Flags for ZFS_IOC_VDEV_SET_STATE
831 #define ZFS_ONLINE_CHECKREMOVE 0x1
832 #define ZFS_ONLINE_UNSPARE 0x2
833 #define ZFS_ONLINE_FORCEFAULT 0x4
834 #define ZFS_ONLINE_EXPAND 0x8
835 #define ZFS_OFFLINE_TEMPORARY 0x1
838 * Flags for ZFS_IOC_POOL_IMPORT
840 #define ZFS_IMPORT_NORMAL 0x0
841 #define ZFS_IMPORT_VERBATIM 0x1
842 #define ZFS_IMPORT_ANY_HOST 0x2
843 #define ZFS_IMPORT_MISSING_LOG 0x4
844 #define ZFS_IMPORT_ONLY 0x8
847 * Sysevent payload members. ZFS will generate the following sysevents with the
850 * ESC_ZFS_RESILVER_START
851 * ESC_ZFS_RESILVER_END
852 * ESC_ZFS_POOL_DESTROY
854 * ZFS_EV_POOL_NAME DATA_TYPE_STRING
855 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64
857 * ESC_ZFS_VDEV_REMOVE
861 * ZFS_EV_POOL_NAME DATA_TYPE_STRING
862 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64
863 * ZFS_EV_VDEV_PATH DATA_TYPE_STRING (optional)
864 * ZFS_EV_VDEV_GUID DATA_TYPE_UINT64
866 #define ZFS_EV_POOL_NAME "pool_name"
867 #define ZFS_EV_POOL_GUID "pool_guid"
868 #define ZFS_EV_VDEV_PATH "vdev_path"
869 #define ZFS_EV_VDEV_GUID "vdev_guid"
872 * Note: This is encoded on-disk, so new events must be added to the
873 * end, and unused events can not be removed. Be sure to edit
874 * libzfs_pool.c: hist_event_table[].
876 typedef enum history_internal_events
{
884 LOG_POOL_VDEV_ATTACH
,
885 LOG_POOL_VDEV_REPLACE
,
886 LOG_POOL_VDEV_DETACH
,
887 LOG_POOL_VDEV_ONLINE
,
888 LOG_POOL_VDEV_OFFLINE
,
896 LOG_DS_DESTROY_BEGIN
,
902 LOG_DS_PERM_WHO_REMOVE
,
907 LOG_DS_REPLAY_INC_SYNC
,
908 LOG_DS_REPLAY_FULL_SYNC
,
919 } history_internal_events_t
;
925 #endif /* _SYS_FS_ZFS_H */