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) 2013 by Delphix. All rights reserved.
25 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
26 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
27 * Copyright (c) 2012, Martin Matuska <mm@FreeBSD.org>. All rights reserved.
30 /* Portions Copyright 2010 Robert Milkowski */
35 #include <sys/types.h>
36 #include <sys/ioccom.h>
44 * Types and constants shared between userland and the kernel.
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.
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)
59 typedef enum dmu_objset_type {
64 DMU_OST_OTHER, /* For testing only! */
65 DMU_OST_ANY, /* Be careful! */
69 #define ZFS_TYPE_DATASET \
70 (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT)
72 #define ZAP_MAXNAMELEN 256
73 #define ZAP_MAXVALUELEN (1024 * 8)
74 #define ZAP_OLDMAXVALUELEN 1024
77 * Dataset properties are identified by these constants and must be added to
78 * the end of this list to ensure that external consumers are not affected
79 * by the change. If you make any changes to this list, be sure to update
80 * the property table in usr/src/common/zfs/zfs_prop.c.
88 ZFS_PROP_COMPRESSRATIO,
94 ZFS_PROP_VOLBLOCKSIZE,
109 ZFS_PROP_CREATETXG, /* not exposed to the user */
110 ZFS_PROP_NAME, /* not exposed to the user */
112 ZFS_PROP_ISCSIOPTIONS, /* not exposed to the user */
114 ZFS_PROP_NUMCLONES, /* not exposed to the user */
124 ZFS_PROP_REFRESERVATION,
126 ZFS_PROP_PRIMARYCACHE,
127 ZFS_PROP_SECONDARYCACHE,
131 ZFS_PROP_USEDREFRESERV,
132 ZFS_PROP_USERACCOUNTING, /* not exposed to the user */
133 ZFS_PROP_STMF_SHAREINFO, /* not exposed to the user */
134 ZFS_PROP_DEFER_DESTROY,
137 ZFS_PROP_UNIQUE, /* not exposed to the user */
138 ZFS_PROP_OBJSETID, /* not exposed to the user */
145 ZFS_PROP_LOGICALUSED,
146 ZFS_PROP_LOGICALREFERENCED,
147 ZFS_PROP_INCONSISTENT, /* not exposed to the user */
148 ZFS_PROP_FILESYSTEM_LIMIT,
149 ZFS_PROP_SNAPSHOT_LIMIT,
150 ZFS_PROP_FILESYSTEM_COUNT,
151 ZFS_PROP_SNAPSHOT_COUNT,
160 ZFS_NUM_USERQUOTA_PROPS
161 } zfs_userquota_prop_t;
163 extern const char *zfs_userquota_prop_prefixes[ZFS_NUM_USERQUOTA_PROPS];
166 * Pool properties are identified by these constants and must be added to the
167 * end of this list to ensure that external consumers are not affected
168 * by the change. If you make any changes to this list, be sure to update
169 * the property table in usr/src/common/zfs/zpool_prop.c.
180 ZPOOL_PROP_DELEGATION,
181 ZPOOL_PROP_AUTOREPLACE,
182 ZPOOL_PROP_CACHEFILE,
183 ZPOOL_PROP_FAILUREMODE,
184 ZPOOL_PROP_LISTSNAPS,
185 ZPOOL_PROP_AUTOEXPAND,
186 ZPOOL_PROP_DEDUPDITTO,
187 ZPOOL_PROP_DEDUPRATIO,
189 ZPOOL_PROP_ALLOCATED,
197 /* Small enough to not hog a whole line of printout in zpool(1M). */
198 #define ZPROP_MAX_COMMENT 32
200 #define ZPROP_CONT -2
201 #define ZPROP_INVAL -1
203 #define ZPROP_VALUE "value"
204 #define ZPROP_SOURCE "source"
207 ZPROP_SRC_NONE = 0x1,
208 ZPROP_SRC_DEFAULT = 0x2,
209 ZPROP_SRC_TEMPORARY = 0x4,
210 ZPROP_SRC_LOCAL = 0x8,
211 ZPROP_SRC_INHERITED = 0x10,
212 ZPROP_SRC_RECEIVED = 0x20
215 #define ZPROP_SRC_ALL 0x3f
217 #define ZPROP_SOURCE_VAL_RECVD "$recvd"
218 #define ZPROP_N_MORE_ERRORS "N_MORE_ERRORS"
220 * Dataset flag implemented as a special entry in the props zap object
221 * indicating that the dataset has received properties on or after
222 * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties
223 * just as it did in earlier versions, and thereafter, local properties are
226 #define ZPROP_HAS_RECVD "$hasrecvd"
229 ZPROP_ERR_NOCLEAR = 0x1, /* failure to clear existing props */
230 ZPROP_ERR_NORESTORE = 0x2 /* failure to restore props on error */
233 typedef int (*zprop_func)(int, void *);
236 * Properties to be set on the root file system of a new pool
237 * are stuffed into their own nvlist, which is then included in
238 * the properties nvlist with the pool properties.
240 #define ZPOOL_ROOTFS_PROPS "root-props-nvl"
243 * Dataset property functions shared between libzfs and kernel.
245 const char *zfs_prop_default_string(zfs_prop_t);
246 uint64_t zfs_prop_default_numeric(zfs_prop_t);
247 boolean_t zfs_prop_readonly(zfs_prop_t);
248 boolean_t zfs_prop_inheritable(zfs_prop_t);
249 boolean_t zfs_prop_setonce(zfs_prop_t);
250 const char *zfs_prop_to_name(zfs_prop_t);
251 zfs_prop_t zfs_name_to_prop(const char *);
252 boolean_t zfs_prop_user(const char *);
253 boolean_t zfs_prop_userquota(const char *);
254 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);
255 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *);
256 uint64_t zfs_prop_random_value(zfs_prop_t, uint64_t seed);
257 boolean_t zfs_prop_valid_for_type(int, zfs_type_t);
260 * Pool property functions shared between libzfs and kernel.
262 zpool_prop_t zpool_name_to_prop(const char *);
263 const char *zpool_prop_to_name(zpool_prop_t);
264 const char *zpool_prop_default_string(zpool_prop_t);
265 uint64_t zpool_prop_default_numeric(zpool_prop_t);
266 boolean_t zpool_prop_readonly(zpool_prop_t);
267 boolean_t zpool_prop_feature(const char *);
268 boolean_t zpool_prop_unsupported(const char *name);
269 int zpool_prop_index_to_string(zpool_prop_t, uint64_t, const char **);
270 int zpool_prop_string_to_index(zpool_prop_t, const char *, uint64_t *);
271 uint64_t zpool_prop_random_value(zpool_prop_t, uint64_t seed);
274 * Definitions for the Delegation.
277 ZFS_DELEG_WHO_UNKNOWN = 0,
278 ZFS_DELEG_USER = 'u',
279 ZFS_DELEG_USER_SETS = 'U',
280 ZFS_DELEG_GROUP = 'g',
281 ZFS_DELEG_GROUP_SETS = 'G',
282 ZFS_DELEG_EVERYONE = 'e',
283 ZFS_DELEG_EVERYONE_SETS = 'E',
284 ZFS_DELEG_CREATE = 'c',
285 ZFS_DELEG_CREATE_SETS = 'C',
286 ZFS_DELEG_NAMED_SET = 's',
287 ZFS_DELEG_NAMED_SET_SETS = 'S'
288 } zfs_deleg_who_type_t;
292 ZFS_DELEG_PERM_LOCAL = 1,
293 ZFS_DELEG_PERM_DESCENDENT = 2,
294 ZFS_DELEG_PERM_LOCALDESCENDENT = 3,
295 ZFS_DELEG_PERM_CREATE = 4
296 } zfs_deleg_inherit_t;
298 #define ZFS_DELEG_PERM_UID "uid"
299 #define ZFS_DELEG_PERM_GID "gid"
300 #define ZFS_DELEG_PERM_GROUPS "groups"
302 #define ZFS_MLSLABEL_DEFAULT "none"
304 #define ZFS_SMB_ACL_SRC "src"
305 #define ZFS_SMB_ACL_TARGET "target"
308 ZFS_CANMOUNT_OFF = 0,
310 ZFS_CANMOUNT_NOAUTO = 2
311 } zfs_canmount_type_t;
314 ZFS_LOGBIAS_LATENCY = 0,
315 ZFS_LOGBIAS_THROUGHPUT = 1
318 typedef enum zfs_share_op {
325 typedef enum zfs_smb_acl_op {
332 typedef enum zfs_cache_type {
334 ZFS_CACHE_METADATA = 1,
339 ZFS_SYNC_STANDARD = 0,
341 ZFS_SYNC_DISABLED = 2
346 * On-disk version number.
348 #define SPA_VERSION_1 1ULL
349 #define SPA_VERSION_2 2ULL
350 #define SPA_VERSION_3 3ULL
351 #define SPA_VERSION_4 4ULL
352 #define SPA_VERSION_5 5ULL
353 #define SPA_VERSION_6 6ULL
354 #define SPA_VERSION_7 7ULL
355 #define SPA_VERSION_8 8ULL
356 #define SPA_VERSION_9 9ULL
357 #define SPA_VERSION_10 10ULL
358 #define SPA_VERSION_11 11ULL
359 #define SPA_VERSION_12 12ULL
360 #define SPA_VERSION_13 13ULL
361 #define SPA_VERSION_14 14ULL
362 #define SPA_VERSION_15 15ULL
363 #define SPA_VERSION_16 16ULL
364 #define SPA_VERSION_17 17ULL
365 #define SPA_VERSION_18 18ULL
366 #define SPA_VERSION_19 19ULL
367 #define SPA_VERSION_20 20ULL
368 #define SPA_VERSION_21 21ULL
369 #define SPA_VERSION_22 22ULL
370 #define SPA_VERSION_23 23ULL
371 #define SPA_VERSION_24 24ULL
372 #define SPA_VERSION_25 25ULL
373 #define SPA_VERSION_26 26ULL
374 #define SPA_VERSION_27 27ULL
375 #define SPA_VERSION_28 28ULL
376 #define SPA_VERSION_5000 5000ULL
379 * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk
380 * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*},
381 * and do the appropriate changes. Also bump the version number in
382 * usr/src/grub/capability.
384 #define SPA_VERSION SPA_VERSION_5000
385 #define SPA_VERSION_STRING "5000"
388 * Symbolic names for the changes that caused a SPA_VERSION switch.
389 * Used in the code when checking for presence or absence of a feature.
390 * Feel free to define multiple symbolic names for each version if there
391 * were multiple changes to on-disk structures during that version.
393 * NOTE: When checking the current SPA_VERSION in your code, be sure
394 * to use spa_version() since it reports the version of the
395 * last synced uberblock. Checking the in-flight version can
396 * be dangerous in some cases.
398 #define SPA_VERSION_INITIAL SPA_VERSION_1
399 #define SPA_VERSION_DITTO_BLOCKS SPA_VERSION_2
400 #define SPA_VERSION_SPARES SPA_VERSION_3
401 #define SPA_VERSION_RAIDZ2 SPA_VERSION_3
402 #define SPA_VERSION_BPOBJ_ACCOUNT SPA_VERSION_3
403 #define SPA_VERSION_RAIDZ_DEFLATE SPA_VERSION_3
404 #define SPA_VERSION_DNODE_BYTES SPA_VERSION_3
405 #define SPA_VERSION_ZPOOL_HISTORY SPA_VERSION_4
406 #define SPA_VERSION_GZIP_COMPRESSION SPA_VERSION_5
407 #define SPA_VERSION_BOOTFS SPA_VERSION_6
408 #define SPA_VERSION_SLOGS SPA_VERSION_7
409 #define SPA_VERSION_DELEGATED_PERMS SPA_VERSION_8
410 #define SPA_VERSION_FUID SPA_VERSION_9
411 #define SPA_VERSION_REFRESERVATION SPA_VERSION_9
412 #define SPA_VERSION_REFQUOTA SPA_VERSION_9
413 #define SPA_VERSION_UNIQUE_ACCURATE SPA_VERSION_9
414 #define SPA_VERSION_L2CACHE SPA_VERSION_10
415 #define SPA_VERSION_NEXT_CLONES SPA_VERSION_11
416 #define SPA_VERSION_ORIGIN SPA_VERSION_11
417 #define SPA_VERSION_DSL_SCRUB SPA_VERSION_11
418 #define SPA_VERSION_SNAP_PROPS SPA_VERSION_12
419 #define SPA_VERSION_USED_BREAKDOWN SPA_VERSION_13
420 #define SPA_VERSION_PASSTHROUGH_X SPA_VERSION_14
421 #define SPA_VERSION_USERSPACE SPA_VERSION_15
422 #define SPA_VERSION_STMF_PROP SPA_VERSION_16
423 #define SPA_VERSION_RAIDZ3 SPA_VERSION_17
424 #define SPA_VERSION_USERREFS SPA_VERSION_18
425 #define SPA_VERSION_HOLES SPA_VERSION_19
426 #define SPA_VERSION_ZLE_COMPRESSION SPA_VERSION_20
427 #define SPA_VERSION_DEDUP SPA_VERSION_21
428 #define SPA_VERSION_RECVD_PROPS SPA_VERSION_22
429 #define SPA_VERSION_SLIM_ZIL SPA_VERSION_23
430 #define SPA_VERSION_SA SPA_VERSION_24
431 #define SPA_VERSION_SCAN SPA_VERSION_25
432 #define SPA_VERSION_DIR_CLONES SPA_VERSION_26
433 #define SPA_VERSION_DEADLISTS SPA_VERSION_26
434 #define SPA_VERSION_FAST_SNAP SPA_VERSION_27
435 #define SPA_VERSION_MULTI_REPLACE SPA_VERSION_28
436 #define SPA_VERSION_BEFORE_FEATURES SPA_VERSION_28
437 #define SPA_VERSION_FEATURES SPA_VERSION_5000
439 #define SPA_VERSION_IS_SUPPORTED(v) \
440 (((v) >= SPA_VERSION_INITIAL && (v) <= SPA_VERSION_BEFORE_FEATURES) || \
441 ((v) >= SPA_VERSION_FEATURES && (v) <= SPA_VERSION))
444 * ZPL version - rev'd whenever an incompatible on-disk format change
445 * occurs. This is independent of SPA/DMU/ZAP versioning. You must
446 * also update the version_table[] and help message in zfs_prop.c.
448 * When changing, be sure to teach GRUB how to read the new format!
449 * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*}
451 #define ZPL_VERSION_1 1ULL
452 #define ZPL_VERSION_2 2ULL
453 #define ZPL_VERSION_3 3ULL
454 #define ZPL_VERSION_4 4ULL
455 #define ZPL_VERSION_5 5ULL
456 #define ZPL_VERSION ZPL_VERSION_5
457 #define ZPL_VERSION_STRING "5"
459 #define ZPL_VERSION_INITIAL ZPL_VERSION_1
460 #define ZPL_VERSION_DIRENT_TYPE ZPL_VERSION_2
461 #define ZPL_VERSION_FUID ZPL_VERSION_3
462 #define ZPL_VERSION_NORMALIZATION ZPL_VERSION_3
463 #define ZPL_VERSION_SYSATTR ZPL_VERSION_3
464 #define ZPL_VERSION_USERSPACE ZPL_VERSION_4
465 #define ZPL_VERSION_SA ZPL_VERSION_5
467 /* Rewind request information */
468 #define ZPOOL_NO_REWIND 1 /* No policy - default behavior */
469 #define ZPOOL_NEVER_REWIND 2 /* Do not search for best txg or rewind */
470 #define ZPOOL_TRY_REWIND 4 /* Search for best txg, but do not rewind */
471 #define ZPOOL_DO_REWIND 8 /* Rewind to best txg w/in deferred frees */
472 #define ZPOOL_EXTREME_REWIND 16 /* Allow extreme measures to find best txg */
473 #define ZPOOL_REWIND_MASK 28 /* All the possible rewind bits */
474 #define ZPOOL_REWIND_POLICIES 31 /* All the possible policy bits */
476 typedef struct zpool_rewind_policy {
477 uint32_t zrp_request; /* rewind behavior requested */
478 uint64_t zrp_maxmeta; /* max acceptable meta-data errors */
479 uint64_t zrp_maxdata; /* max acceptable data errors */
480 uint64_t zrp_txg; /* specific txg to load */
481 } zpool_rewind_policy_t;
484 * The following are configuration names used in the nvlist describing a pool's
487 #define ZPOOL_CONFIG_VERSION "version"
488 #define ZPOOL_CONFIG_POOL_NAME "name"
489 #define ZPOOL_CONFIG_POOL_STATE "state"
490 #define ZPOOL_CONFIG_POOL_TXG "txg"
491 #define ZPOOL_CONFIG_POOL_GUID "pool_guid"
492 #define ZPOOL_CONFIG_CREATE_TXG "create_txg"
493 #define ZPOOL_CONFIG_TOP_GUID "top_guid"
494 #define ZPOOL_CONFIG_VDEV_TREE "vdev_tree"
495 #define ZPOOL_CONFIG_TYPE "type"
496 #define ZPOOL_CONFIG_CHILDREN "children"
497 #define ZPOOL_CONFIG_ID "id"
498 #define ZPOOL_CONFIG_GUID "guid"
499 #define ZPOOL_CONFIG_PATH "path"
500 #define ZPOOL_CONFIG_DEVID "devid"
501 #define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array"
502 #define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift"
503 #define ZPOOL_CONFIG_ASHIFT "ashift"
504 #define ZPOOL_CONFIG_ASIZE "asize"
505 #define ZPOOL_CONFIG_DTL "DTL"
506 #define ZPOOL_CONFIG_SCAN_STATS "scan_stats" /* not stored on disk */
507 #define ZPOOL_CONFIG_VDEV_STATS "vdev_stats" /* not stored on disk */
508 #define ZPOOL_CONFIG_WHOLE_DISK "whole_disk"
509 #define ZPOOL_CONFIG_ERRCOUNT "error_count"
510 #define ZPOOL_CONFIG_NOT_PRESENT "not_present"
511 #define ZPOOL_CONFIG_SPARES "spares"
512 #define ZPOOL_CONFIG_IS_SPARE "is_spare"
513 #define ZPOOL_CONFIG_NPARITY "nparity"
514 #define ZPOOL_CONFIG_HOSTID "hostid"
515 #define ZPOOL_CONFIG_HOSTNAME "hostname"
516 #define ZPOOL_CONFIG_LOADED_TIME "initial_load_time"
517 #define ZPOOL_CONFIG_UNSPARE "unspare"
518 #define ZPOOL_CONFIG_PHYS_PATH "phys_path"
519 #define ZPOOL_CONFIG_IS_LOG "is_log"
520 #define ZPOOL_CONFIG_L2CACHE "l2cache"
521 #define ZPOOL_CONFIG_HOLE_ARRAY "hole_array"
522 #define ZPOOL_CONFIG_VDEV_CHILDREN "vdev_children"
523 #define ZPOOL_CONFIG_IS_HOLE "is_hole"
524 #define ZPOOL_CONFIG_DDT_HISTOGRAM "ddt_histogram"
525 #define ZPOOL_CONFIG_DDT_OBJ_STATS "ddt_object_stats"
526 #define ZPOOL_CONFIG_DDT_STATS "ddt_stats"
527 #define ZPOOL_CONFIG_SPLIT "splitcfg"
528 #define ZPOOL_CONFIG_ORIG_GUID "orig_guid"
529 #define ZPOOL_CONFIG_SPLIT_GUID "split_guid"
530 #define ZPOOL_CONFIG_SPLIT_LIST "guid_list"
531 #define ZPOOL_CONFIG_REMOVING "removing"
532 #define ZPOOL_CONFIG_RESILVER_TXG "resilver_txg"
533 #define ZPOOL_CONFIG_COMMENT "comment"
534 #define ZPOOL_CONFIG_SUSPENDED "suspended" /* not stored on disk */
535 #define ZPOOL_CONFIG_TIMESTAMP "timestamp" /* not stored on disk */
536 #define ZPOOL_CONFIG_BOOTFS "bootfs" /* not stored on disk */
537 #define ZPOOL_CONFIG_MISSING_DEVICES "missing_vdevs" /* not stored on disk */
538 #define ZPOOL_CONFIG_LOAD_INFO "load_info" /* not stored on disk */
539 #define ZPOOL_CONFIG_REWIND_INFO "rewind_info" /* not stored on disk */
540 #define ZPOOL_CONFIG_UNSUP_FEAT "unsup_feat" /* not stored on disk */
541 #define ZPOOL_CONFIG_ENABLED_FEAT "enabled_feat" /* not stored on disk */
542 #define ZPOOL_CONFIG_CAN_RDONLY "can_rdonly" /* not stored on disk */
543 #define ZPOOL_CONFIG_FEATURES_FOR_READ "features_for_read"
544 #define ZPOOL_CONFIG_FEATURE_STATS "feature_stats" /* not stored on disk */
546 * The persistent vdev state is stored as separate values rather than a single
547 * 'vdev_state' entry. This is because a device can be in multiple states, such
548 * as offline and degraded.
550 #define ZPOOL_CONFIG_OFFLINE "offline"
551 #define ZPOOL_CONFIG_FAULTED "faulted"
552 #define ZPOOL_CONFIG_DEGRADED "degraded"
553 #define ZPOOL_CONFIG_REMOVED "removed"
554 #define ZPOOL_CONFIG_FRU "fru"
555 #define ZPOOL_CONFIG_AUX_STATE "aux_state"
557 /* Rewind policy parameters */
558 #define ZPOOL_REWIND_POLICY "rewind-policy"
559 #define ZPOOL_REWIND_REQUEST "rewind-request"
560 #define ZPOOL_REWIND_REQUEST_TXG "rewind-request-txg"
561 #define ZPOOL_REWIND_META_THRESH "rewind-meta-thresh"
562 #define ZPOOL_REWIND_DATA_THRESH "rewind-data-thresh"
564 /* Rewind data discovered */
565 #define ZPOOL_CONFIG_LOAD_TIME "rewind_txg_ts"
566 #define ZPOOL_CONFIG_LOAD_DATA_ERRORS "verify_data_errors"
567 #define ZPOOL_CONFIG_REWIND_TIME "seconds_of_rewind"
569 #define VDEV_TYPE_ROOT "root"
570 #define VDEV_TYPE_MIRROR "mirror"
571 #define VDEV_TYPE_REPLACING "replacing"
572 #define VDEV_TYPE_RAIDZ "raidz"
573 #define VDEV_TYPE_DISK "disk"
574 #define VDEV_TYPE_FILE "file"
575 #define VDEV_TYPE_MISSING "missing"
576 #define VDEV_TYPE_HOLE "hole"
577 #define VDEV_TYPE_SPARE "spare"
578 #define VDEV_TYPE_LOG "log"
579 #define VDEV_TYPE_L2CACHE "l2cache"
582 * This is needed in userland to report the minimum necessary device size.
584 #define SPA_MINDEVSIZE (64ULL << 20)
587 * The location of the pool configuration repository, shared between kernel and
590 #define ZPOOL_CACHE "/boot/zfs/zpool.cache"
593 * vdev states are ordered from least to most healthy.
594 * A vdev that's CANT_OPEN or below is considered unusable.
596 typedef enum vdev_state {
597 VDEV_STATE_UNKNOWN = 0, /* Uninitialized vdev */
598 VDEV_STATE_CLOSED, /* Not currently open */
599 VDEV_STATE_OFFLINE, /* Not allowed to open */
600 VDEV_STATE_REMOVED, /* Explicitly removed from system */
601 VDEV_STATE_CANT_OPEN, /* Tried to open, but failed */
602 VDEV_STATE_FAULTED, /* External request to fault device */
603 VDEV_STATE_DEGRADED, /* Replicated vdev with unhealthy kids */
604 VDEV_STATE_HEALTHY /* Presumed good */
607 #define VDEV_STATE_ONLINE VDEV_STATE_HEALTHY
610 * vdev aux states. When a vdev is in the CANT_OPEN state, the aux field
611 * of the vdev stats structure uses these constants to distinguish why.
613 typedef enum vdev_aux {
614 VDEV_AUX_NONE, /* no error */
615 VDEV_AUX_OPEN_FAILED, /* ldi_open_*() or vn_open() failed */
616 VDEV_AUX_CORRUPT_DATA, /* bad label or disk contents */
617 VDEV_AUX_NO_REPLICAS, /* insufficient number of replicas */
618 VDEV_AUX_BAD_GUID_SUM, /* vdev guid sum doesn't match */
619 VDEV_AUX_TOO_SMALL, /* vdev size is too small */
620 VDEV_AUX_BAD_LABEL, /* the label is OK but invalid */
621 VDEV_AUX_VERSION_NEWER, /* on-disk version is too new */
622 VDEV_AUX_VERSION_OLDER, /* on-disk version is too old */
623 VDEV_AUX_UNSUP_FEAT, /* unsupported features */
624 VDEV_AUX_SPARED, /* hot spare used in another pool */
625 VDEV_AUX_ERR_EXCEEDED, /* too many errors */
626 VDEV_AUX_IO_FAILURE, /* experienced I/O failure */
627 VDEV_AUX_BAD_LOG, /* cannot read log chain(s) */
628 VDEV_AUX_EXTERNAL, /* external diagnosis */
629 VDEV_AUX_SPLIT_POOL, /* vdev was split off into another pool */
630 VDEV_AUX_ASHIFT_TOO_BIG /* vdev's min block size is too large */
634 * pool state. The following states are written to disk as part of the normal
635 * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE. The remaining
636 * states are software abstractions used at various levels to communicate
639 typedef enum pool_state {
640 POOL_STATE_ACTIVE = 0, /* In active use */
641 POOL_STATE_EXPORTED, /* Explicitly exported */
642 POOL_STATE_DESTROYED, /* Explicitly destroyed */
643 POOL_STATE_SPARE, /* Reserved for hot spare use */
644 POOL_STATE_L2CACHE, /* Level 2 ARC device */
645 POOL_STATE_UNINITIALIZED, /* Internal spa_t state */
646 POOL_STATE_UNAVAIL, /* Internal libzfs state */
647 POOL_STATE_POTENTIALLY_ACTIVE /* Internal libzfs state */
653 typedef enum pool_scan_func {
661 * ZIO types. Needed to interpret vdev statistics below.
663 typedef enum zio_type {
674 * Pool statistics. Note: all fields should be 64-bit because this
675 * is passed between kernel and userland as an nvlist uint64 array.
677 typedef struct pool_scan_stat {
678 /* values stored on disk */
679 uint64_t pss_func; /* pool_scan_func_t */
680 uint64_t pss_state; /* dsl_scan_state_t */
681 uint64_t pss_start_time; /* scan start time */
682 uint64_t pss_end_time; /* scan end time */
683 uint64_t pss_to_examine; /* total bytes to scan */
684 uint64_t pss_examined; /* total examined bytes */
685 uint64_t pss_to_process; /* total bytes to process */
686 uint64_t pss_processed; /* total processed bytes */
687 uint64_t pss_errors; /* scan errors */
689 /* values not stored on disk */
690 uint64_t pss_pass_exam; /* examined bytes per scan pass */
691 uint64_t pss_pass_start; /* start time of a scan pass */
694 typedef enum dsl_scan_state {
704 * Vdev 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 vdev_stat {
708 hrtime_t vs_timestamp; /* time since vdev load */
709 uint64_t vs_state; /* vdev state */
710 uint64_t vs_aux; /* see vdev_aux_t */
711 uint64_t vs_alloc; /* space allocated */
712 uint64_t vs_space; /* total capacity */
713 uint64_t vs_dspace; /* deflated capacity */
714 uint64_t vs_rsize; /* replaceable dev size */
715 uint64_t vs_esize; /* expandable dev size */
716 uint64_t vs_ops[ZIO_TYPES]; /* operation count */
717 uint64_t vs_bytes[ZIO_TYPES]; /* bytes read/written */
718 uint64_t vs_read_errors; /* read errors */
719 uint64_t vs_write_errors; /* write errors */
720 uint64_t vs_checksum_errors; /* checksum errors */
721 uint64_t vs_self_healed; /* self-healed bytes */
722 uint64_t vs_scan_removing; /* removing? */
723 uint64_t vs_scan_processed; /* scan processed bytes */
724 uint64_t vs_configured_ashift; /* TLV vdev_ashift */
725 uint64_t vs_logical_ashift; /* vdev_logical_ashift */
726 uint64_t vs_physical_ashift; /* vdev_physical_ashift */
728 #define VDEV_STAT_VALID(field, uint64_t_field_count) \
729 ((uint64_t_field_count * sizeof(uint64_t)) >= \
730 (offsetof(vdev_stat_t, field) + sizeof(((vdev_stat_t *)NULL)->field)))
733 * DDT statistics. Note: all fields should be 64-bit because this
734 * is passed between kernel and userland as an nvlist uint64 array.
736 typedef struct ddt_object {
737 uint64_t ddo_count; /* number of elments in ddt */
738 uint64_t ddo_dspace; /* size of ddt on disk */
739 uint64_t ddo_mspace; /* size of ddt in-core */
742 typedef struct ddt_stat {
743 uint64_t dds_blocks; /* blocks */
744 uint64_t dds_lsize; /* logical size */
745 uint64_t dds_psize; /* physical size */
746 uint64_t dds_dsize; /* deflated allocated size */
747 uint64_t dds_ref_blocks; /* referenced blocks */
748 uint64_t dds_ref_lsize; /* referenced lsize * refcnt */
749 uint64_t dds_ref_psize; /* referenced psize * refcnt */
750 uint64_t dds_ref_dsize; /* referenced dsize * refcnt */
753 typedef struct ddt_histogram {
754 ddt_stat_t ddh_stat[64]; /* power-of-two histogram buckets */
757 #define ZVOL_DRIVER "zvol"
758 #define ZFS_DRIVER "zfs"
759 #define ZFS_DEV_NAME "zfs"
760 #define ZFS_DEV "/dev/" ZFS_DEV_NAME
762 /* general zvol path */
763 #define ZVOL_DIR "/dev/zvol"
765 #define ZVOL_PSEUDO_DEV "/devices/pseudo/zfs@0:"
766 /* for dump and swap */
767 #define ZVOL_FULL_DEV_DIR ZVOL_DIR "/dsk/"
768 #define ZVOL_FULL_RDEV_DIR ZVOL_DIR "/rdsk/"
770 #define ZVOL_PROP_NAME "name"
771 #define ZVOL_DEFAULT_BLOCKSIZE 8192
774 * /dev/zfs ioctl numbers.
776 typedef enum zfs_ioc {
778 ZFS_IOC_POOL_CREATE = ZFS_IOC_FIRST,
779 ZFS_IOC_POOL_DESTROY,
782 ZFS_IOC_POOL_CONFIGS,
784 ZFS_IOC_POOL_TRYIMPORT,
787 ZFS_IOC_POOL_UPGRADE,
788 ZFS_IOC_POOL_GET_HISTORY,
791 ZFS_IOC_VDEV_SET_STATE,
794 ZFS_IOC_VDEV_SETPATH,
796 ZFS_IOC_OBJSET_STATS,
797 ZFS_IOC_OBJSET_ZPLPROPS,
798 ZFS_IOC_DATASET_LIST_NEXT,
799 ZFS_IOC_SNAPSHOT_LIST_NEXT,
807 ZFS_IOC_INJECT_FAULT,
809 ZFS_IOC_INJECT_LIST_NEXT,
813 ZFS_IOC_DESTROY_SNAPS,
815 ZFS_IOC_DSOBJ_TO_DSNAME,
817 ZFS_IOC_POOL_SET_PROPS,
818 ZFS_IOC_POOL_GET_PROPS,
822 ZFS_IOC_INHERIT_PROP,
824 ZFS_IOC_USERSPACE_ONE,
825 ZFS_IOC_USERSPACE_MANY,
826 ZFS_IOC_USERSPACE_UPGRADE,
830 ZFS_IOC_OBJSET_RECVD_PROPS,
834 ZFS_IOC_TMP_SNAPSHOT,
835 ZFS_IOC_OBJ_TO_STATS,
839 ZFS_IOC_SPACE_WRITTEN,
841 ZFS_IOC_SEND_PROGRESS,
848 ZFS_IOC_GET_BOOKMARKS,
849 ZFS_IOC_DESTROY_BOOKMARKS,
854 * Internal SPA load state. Used by FMA diagnosis engine.
857 SPA_LOAD_NONE, /* no load in progress */
858 SPA_LOAD_OPEN, /* normal open */
859 SPA_LOAD_IMPORT, /* import in progress */
860 SPA_LOAD_TRYIMPORT, /* tryimport in progress */
861 SPA_LOAD_RECOVER, /* recovery requested */
862 SPA_LOAD_ERROR /* load failed */
866 * Bookmark name values.
868 #define ZPOOL_ERR_LIST "error list"
869 #define ZPOOL_ERR_DATASET "dataset"
870 #define ZPOOL_ERR_OBJECT "object"
872 #define HIS_MAX_RECORD_LEN (MAXPATHLEN + MAXPATHLEN + 1)
875 * The following are names used in the nvlist describing
876 * the pool's history log.
878 #define ZPOOL_HIST_RECORD "history record"
879 #define ZPOOL_HIST_TIME "history time"
880 #define ZPOOL_HIST_CMD "history command"
881 #define ZPOOL_HIST_WHO "history who"
882 #define ZPOOL_HIST_ZONE "history zone"
883 #define ZPOOL_HIST_HOST "history hostname"
884 #define ZPOOL_HIST_TXG "history txg"
885 #define ZPOOL_HIST_INT_EVENT "history internal event"
886 #define ZPOOL_HIST_INT_STR "history internal str"
887 #define ZPOOL_HIST_INT_NAME "internal_name"
888 #define ZPOOL_HIST_IOCTL "ioctl"
889 #define ZPOOL_HIST_INPUT_NVL "in_nvl"
890 #define ZPOOL_HIST_OUTPUT_NVL "out_nvl"
891 #define ZPOOL_HIST_DSNAME "dsname"
892 #define ZPOOL_HIST_DSID "dsid"
895 * Flags for ZFS_IOC_VDEV_SET_STATE
897 #define ZFS_ONLINE_CHECKREMOVE 0x1
898 #define ZFS_ONLINE_UNSPARE 0x2
899 #define ZFS_ONLINE_FORCEFAULT 0x4
900 #define ZFS_ONLINE_EXPAND 0x8
901 #define ZFS_OFFLINE_TEMPORARY 0x1
904 * Flags for ZFS_IOC_POOL_IMPORT
906 #define ZFS_IMPORT_NORMAL 0x0
907 #define ZFS_IMPORT_VERBATIM 0x1
908 #define ZFS_IMPORT_ANY_HOST 0x2
909 #define ZFS_IMPORT_MISSING_LOG 0x4
910 #define ZFS_IMPORT_ONLY 0x8
913 * Sysevent payload members. ZFS will generate the following sysevents with the
916 * ESC_ZFS_RESILVER_START
917 * ESC_ZFS_RESILVER_END
918 * ESC_ZFS_POOL_DESTROY
919 * ESC_ZFS_POOL_REGUID
921 * ZFS_EV_POOL_NAME DATA_TYPE_STRING
922 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64
924 * ESC_ZFS_VDEV_REMOVE
928 * ZFS_EV_POOL_NAME DATA_TYPE_STRING
929 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64
930 * ZFS_EV_VDEV_PATH DATA_TYPE_STRING (optional)
931 * ZFS_EV_VDEV_GUID DATA_TYPE_UINT64
933 #define ZFS_EV_POOL_NAME "pool_name"
934 #define ZFS_EV_POOL_GUID "pool_guid"
935 #define ZFS_EV_VDEV_PATH "vdev_path"
936 #define ZFS_EV_VDEV_GUID "vdev_guid"
942 #endif /* _SYS_FS_ZFS_H */