1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2011 by Delphix. All rights reserved.
26 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
27 */
28
29 /* Portions Copyright 2010 Robert Milkowski */
30
31 #ifndef _SYS_FS_ZFS_H
32 #define _SYS_FS_ZFS_H
33
34 #include <sys/time.h>
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 /*
41 * Types and constants shared between userland and the kernel.
42 */
43
44 /*
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.
47 */
48 typedef enum {
49 ZFS_TYPE_FILESYSTEM = 0x1,
50 ZFS_TYPE_SNAPSHOT = 0x2,
51 ZFS_TYPE_VOLUME = 0x4,
52 ZFS_TYPE_POOL = 0x8
53 } zfs_type_t;
54
55 #define ZFS_TYPE_DATASET \
56 (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT)
57
58 #define ZAP_MAXNAMELEN 256
59 #define ZAP_MAXVALUELEN (1024 * 8)
60 #define ZAP_OLDMAXVALUELEN 1024
61
62 /*
63 * Dataset properties are identified by these constants and must be added to
64 * the end of this list to ensure that external consumers are not affected
65 * by the change. If you make any changes to this list, be sure to update
66 * the property table in usr/src/common/zfs/zfs_prop.c.
67 */
68 typedef enum {
69 ZFS_PROP_TYPE,
70 ZFS_PROP_CREATION,
71 ZFS_PROP_USED,
72 ZFS_PROP_AVAILABLE,
73 ZFS_PROP_REFERENCED,
74 ZFS_PROP_COMPRESSRATIO,
75 ZFS_PROP_MOUNTED,
76 ZFS_PROP_ORIGIN,
77 ZFS_PROP_QUOTA,
78 ZFS_PROP_RESERVATION,
79 ZFS_PROP_VOLSIZE,
80 ZFS_PROP_VOLBLOCKSIZE,
81 ZFS_PROP_RECORDSIZE,
82 ZFS_PROP_MOUNTPOINT,
83 ZFS_PROP_SHARENFS,
84 ZFS_PROP_CHECKSUM,
85 ZFS_PROP_COMPRESSION,
86 ZFS_PROP_ATIME,
87 ZFS_PROP_DEVICES,
88 ZFS_PROP_EXEC,
89 ZFS_PROP_SETUID,
90 ZFS_PROP_READONLY,
91 ZFS_PROP_ZONED,
92 ZFS_PROP_SNAPDIR,
93 ZFS_PROP_ACLMODE,
94 ZFS_PROP_ACLINHERIT,
95 ZFS_PROP_CREATETXG, /* not exposed to the user */
96 ZFS_PROP_NAME, /* not exposed to the user */
97 ZFS_PROP_CANMOUNT,
98 ZFS_PROP_ISCSIOPTIONS, /* not exposed to the user */
99 ZFS_PROP_XATTR,
100 ZFS_PROP_NUMCLONES, /* not exposed to the user */
101 ZFS_PROP_COPIES,
102 ZFS_PROP_VERSION,
103 ZFS_PROP_UTF8ONLY,
104 ZFS_PROP_NORMALIZE,
105 ZFS_PROP_CASE,
106 ZFS_PROP_VSCAN,
107 ZFS_PROP_NBMAND,
108 ZFS_PROP_SHARESMB,
109 ZFS_PROP_REFQUOTA,
110 ZFS_PROP_REFRESERVATION,
111 ZFS_PROP_GUID,
112 ZFS_PROP_PRIMARYCACHE,
113 ZFS_PROP_SECONDARYCACHE,
114 ZFS_PROP_USEDSNAP,
115 ZFS_PROP_USEDDS,
116 ZFS_PROP_USEDCHILD,
117 ZFS_PROP_USEDREFRESERV,
118 ZFS_PROP_USERACCOUNTING, /* not exposed to the user */
119 ZFS_PROP_STMF_SHAREINFO, /* not exposed to the user */
120 ZFS_PROP_DEFER_DESTROY,
121 ZFS_PROP_USERREFS,
122 ZFS_PROP_LOGBIAS,
123 ZFS_PROP_UNIQUE, /* not exposed to the user */
124 ZFS_PROP_OBJSETID, /* not exposed to the user */
125 ZFS_PROP_DEDUP,
126 ZFS_PROP_MLSLABEL,
127 ZFS_PROP_SYNC,
128 ZFS_PROP_REFRATIO,
129 ZFS_NUM_PROPS
130 } zfs_prop_t;
131
132 typedef enum {
133 ZFS_PROP_USERUSED,
134 ZFS_PROP_USERQUOTA,
135 ZFS_PROP_GROUPUSED,
136 ZFS_PROP_GROUPQUOTA,
137 ZFS_NUM_USERQUOTA_PROPS
138 } zfs_userquota_prop_t;
139
140 extern const char *zfs_userquota_prop_prefixes[ZFS_NUM_USERQUOTA_PROPS];
141
142 /*
143 * Pool properties are identified by these constants and must be added to the
144 * end of this list to ensure that external consumers are not affected
145 * by the change. If you make any changes to this list, be sure to update
146 * the property table in usr/src/common/zfs/zpool_prop.c.
147 */
148 typedef enum {
149 ZPOOL_PROP_NAME,
150 ZPOOL_PROP_SIZE,
151 ZPOOL_PROP_CAPACITY,
152 ZPOOL_PROP_ALTROOT,
153 ZPOOL_PROP_HEALTH,
154 ZPOOL_PROP_GUID,
155 ZPOOL_PROP_VERSION,
156 ZPOOL_PROP_BOOTFS,
157 ZPOOL_PROP_DELEGATION,
158 ZPOOL_PROP_AUTOREPLACE,
159 ZPOOL_PROP_CACHEFILE,
160 ZPOOL_PROP_FAILUREMODE,
161 ZPOOL_PROP_LISTSNAPS,
162 ZPOOL_PROP_AUTOEXPAND,
163 ZPOOL_PROP_DEDUPDITTO,
164 ZPOOL_PROP_DEDUPRATIO,
165 ZPOOL_PROP_FREE,
166 ZPOOL_PROP_ALLOCATED,
167 ZPOOL_PROP_READONLY,
168 ZPOOL_PROP_COMMENT,
169 ZPOOL_NUM_PROPS
170 } zpool_prop_t;
171
172 /* Small enough to not hog a whole line of printout in zpool(1M). */
173 #define ZPROP_MAX_COMMENT 32
174
175 #define ZPROP_CONT -2
176 #define ZPROP_INVAL -1
177
178 #define ZPROP_VALUE "value"
179 #define ZPROP_SOURCE "source"
180
181 typedef enum {
182 ZPROP_SRC_NONE = 0x1,
183 ZPROP_SRC_DEFAULT = 0x2,
184 ZPROP_SRC_TEMPORARY = 0x4,
185 ZPROP_SRC_LOCAL = 0x8,
186 ZPROP_SRC_INHERITED = 0x10,
187 ZPROP_SRC_RECEIVED = 0x20
188 } zprop_source_t;
189
190 #define ZPROP_SRC_ALL 0x3f
191
192 #define ZPROP_SOURCE_VAL_RECVD "$recvd"
193 #define ZPROP_N_MORE_ERRORS "N_MORE_ERRORS"
194 /*
195 * Dataset flag implemented as a special entry in the props zap object
196 * indicating that the dataset has received properties on or after
197 * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties
198 * just as it did in earlier versions, and thereafter, local properties are
199 * preserved.
200 */
201 #define ZPROP_HAS_RECVD "$hasrecvd"
202
203 typedef enum {
204 ZPROP_ERR_NOCLEAR = 0x1, /* failure to clear existing props */
205 ZPROP_ERR_NORESTORE = 0x2 /* failure to restore props on error */
206 } zprop_errflags_t;
207
208 typedef int (*zprop_func)(int, void *);
209
210 /*
211 * Properties to be set on the root file system of a new pool
212 * are stuffed into their own nvlist, which is then included in
213 * the properties nvlist with the pool properties.
214 */
215 #define ZPOOL_ROOTFS_PROPS "root-props-nvl"
216
217 /*
218 * Dataset property functions shared between libzfs and kernel.
219 */
220 const char *zfs_prop_default_string(zfs_prop_t);
221 uint64_t zfs_prop_default_numeric(zfs_prop_t);
222 boolean_t zfs_prop_readonly(zfs_prop_t);
223 boolean_t zfs_prop_inheritable(zfs_prop_t);
224 boolean_t zfs_prop_setonce(zfs_prop_t);
225 const char *zfs_prop_to_name(zfs_prop_t);
226 zfs_prop_t zfs_name_to_prop(const char *);
227 boolean_t zfs_prop_user(const char *);
228 boolean_t zfs_prop_userquota(const char *);
229 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);
230 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *);
231 uint64_t zfs_prop_random_value(zfs_prop_t, uint64_t seed);
232 boolean_t zfs_prop_valid_for_type(int, zfs_type_t);
233
234 /*
235 * Pool property functions shared between libzfs and kernel.
236 */
237 zpool_prop_t zpool_name_to_prop(const char *);
238 const char *zpool_prop_to_name(zpool_prop_t);
239 const char *zpool_prop_default_string(zpool_prop_t);
240 uint64_t zpool_prop_default_numeric(zpool_prop_t);
241 boolean_t zpool_prop_readonly(zpool_prop_t);
242 int zpool_prop_index_to_string(zpool_prop_t, uint64_t, const char **);
243 int zpool_prop_string_to_index(zpool_prop_t, const char *, uint64_t *);
244 uint64_t zpool_prop_random_value(zpool_prop_t, uint64_t seed);
245
246 /*
247 * Definitions for the Delegation.
248 */
249 typedef enum {
250 ZFS_DELEG_WHO_UNKNOWN = 0,
251 ZFS_DELEG_USER = 'u',
252 ZFS_DELEG_USER_SETS = 'U',
253 ZFS_DELEG_GROUP = 'g',
254 ZFS_DELEG_GROUP_SETS = 'G',
255 ZFS_DELEG_EVERYONE = 'e',
256 ZFS_DELEG_EVERYONE_SETS = 'E',
257 ZFS_DELEG_CREATE = 'c',
258 ZFS_DELEG_CREATE_SETS = 'C',
259 ZFS_DELEG_NAMED_SET = 's',
260 ZFS_DELEG_NAMED_SET_SETS = 'S'
261 } zfs_deleg_who_type_t;
262
263 typedef enum {
264 ZFS_DELEG_NONE = 0,
265 ZFS_DELEG_PERM_LOCAL = 1,
266 ZFS_DELEG_PERM_DESCENDENT = 2,
267 ZFS_DELEG_PERM_LOCALDESCENDENT = 3,
268 ZFS_DELEG_PERM_CREATE = 4
269 } zfs_deleg_inherit_t;
270
271 #define ZFS_DELEG_PERM_UID "uid"
272 #define ZFS_DELEG_PERM_GID "gid"
273 #define ZFS_DELEG_PERM_GROUPS "groups"
274
275 #define ZFS_MLSLABEL_DEFAULT "none"
276
277 #define ZFS_SMB_ACL_SRC "src"
278 #define ZFS_SMB_ACL_TARGET "target"
279
280 typedef enum {
281 ZFS_CANMOUNT_OFF = 0,
282 ZFS_CANMOUNT_ON = 1,
283 ZFS_CANMOUNT_NOAUTO = 2
284 } zfs_canmount_type_t;
285
286 typedef enum {
287 ZFS_LOGBIAS_LATENCY = 0,
288 ZFS_LOGBIAS_THROUGHPUT = 1
289 } zfs_logbias_op_t;
290
291 typedef enum zfs_share_op {
292 ZFS_SHARE_NFS = 0,
293 ZFS_UNSHARE_NFS = 1,
294 ZFS_SHARE_SMB = 2,
295 ZFS_UNSHARE_SMB = 3
296 } zfs_share_op_t;
297
298 typedef enum zfs_smb_acl_op {
299 ZFS_SMB_ACL_ADD,
300 ZFS_SMB_ACL_REMOVE,
301 ZFS_SMB_ACL_RENAME,
302 ZFS_SMB_ACL_PURGE
303 } zfs_smb_acl_op_t;
304
305 typedef enum zfs_cache_type {
306 ZFS_CACHE_NONE = 0,
307 ZFS_CACHE_METADATA = 1,
308 ZFS_CACHE_ALL = 2
309 } zfs_cache_type_t;
310
311 typedef enum {
312 ZFS_SYNC_STANDARD = 0,
313 ZFS_SYNC_ALWAYS = 1,
314 ZFS_SYNC_DISABLED = 2
315 } zfs_sync_type_t;
316
317
318 /*
319 * On-disk version number.
320 */
321 #define SPA_VERSION_1 1ULL
322 #define SPA_VERSION_2 2ULL
323 #define SPA_VERSION_3 3ULL
324 #define SPA_VERSION_4 4ULL
325 #define SPA_VERSION_5 5ULL
326 #define SPA_VERSION_6 6ULL
327 #define SPA_VERSION_7 7ULL
328 #define SPA_VERSION_8 8ULL
329 #define SPA_VERSION_9 9ULL
330 #define SPA_VERSION_10 10ULL
331 #define SPA_VERSION_11 11ULL
332 #define SPA_VERSION_12 12ULL
333 #define SPA_VERSION_13 13ULL
334 #define SPA_VERSION_14 14ULL
335 #define SPA_VERSION_15 15ULL
336 #define SPA_VERSION_16 16ULL
337 #define SPA_VERSION_17 17ULL
338 #define SPA_VERSION_18 18ULL
339 #define SPA_VERSION_19 19ULL
340 #define SPA_VERSION_20 20ULL
341 #define SPA_VERSION_21 21ULL
342 #define SPA_VERSION_22 22ULL
343 #define SPA_VERSION_23 23ULL
344 #define SPA_VERSION_24 24ULL
345 #define SPA_VERSION_25 25ULL
346 #define SPA_VERSION_26 26ULL
347 #define SPA_VERSION_27 27ULL
348 #define SPA_VERSION_28 28ULL
349
350 /*
351 * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk
352 * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*},
353 * and do the appropriate changes. Also bump the version number in
354 * usr/src/grub/capability.
355 */
356 #define SPA_VERSION SPA_VERSION_28
357 #define SPA_VERSION_STRING "28"
358
359 /*
360 * Symbolic names for the changes that caused a SPA_VERSION switch.
361 * Used in the code when checking for presence or absence of a feature.
362 * Feel free to define multiple symbolic names for each version if there
363 * were multiple changes to on-disk structures during that version.
364 *
365 * NOTE: When checking the current SPA_VERSION in your code, be sure
366 * to use spa_version() since it reports the version of the
367 * last synced uberblock. Checking the in-flight version can
368 * be dangerous in some cases.
369 */
370 #define SPA_VERSION_INITIAL SPA_VERSION_1
371 #define SPA_VERSION_DITTO_BLOCKS SPA_VERSION_2
372 #define SPA_VERSION_SPARES SPA_VERSION_3
373 #define SPA_VERSION_RAIDZ2 SPA_VERSION_3
374 #define SPA_VERSION_BPOBJ_ACCOUNT SPA_VERSION_3
375 #define SPA_VERSION_RAIDZ_DEFLATE SPA_VERSION_3
376 #define SPA_VERSION_DNODE_BYTES SPA_VERSION_3
377 #define SPA_VERSION_ZPOOL_HISTORY SPA_VERSION_4
378 #define SPA_VERSION_GZIP_COMPRESSION SPA_VERSION_5
379 #define SPA_VERSION_BOOTFS SPA_VERSION_6
380 #define SPA_VERSION_SLOGS SPA_VERSION_7
381 #define SPA_VERSION_DELEGATED_PERMS SPA_VERSION_8
382 #define SPA_VERSION_FUID SPA_VERSION_9
383 #define SPA_VERSION_REFRESERVATION SPA_VERSION_9
384 #define SPA_VERSION_REFQUOTA SPA_VERSION_9
385 #define SPA_VERSION_UNIQUE_ACCURATE SPA_VERSION_9
386 #define SPA_VERSION_L2CACHE SPA_VERSION_10
387 #define SPA_VERSION_NEXT_CLONES SPA_VERSION_11
388 #define SPA_VERSION_ORIGIN SPA_VERSION_11
389 #define SPA_VERSION_DSL_SCRUB SPA_VERSION_11
390 #define SPA_VERSION_SNAP_PROPS SPA_VERSION_12
391 #define SPA_VERSION_USED_BREAKDOWN SPA_VERSION_13
392 #define SPA_VERSION_PASSTHROUGH_X SPA_VERSION_14
393 #define SPA_VERSION_USERSPACE SPA_VERSION_15
394 #define SPA_VERSION_STMF_PROP SPA_VERSION_16
395 #define SPA_VERSION_RAIDZ3 SPA_VERSION_17
396 #define SPA_VERSION_USERREFS SPA_VERSION_18
397 #define SPA_VERSION_HOLES SPA_VERSION_19
398 #define SPA_VERSION_ZLE_COMPRESSION SPA_VERSION_20
399 #define SPA_VERSION_DEDUP SPA_VERSION_21
400 #define SPA_VERSION_RECVD_PROPS SPA_VERSION_22
401 #define SPA_VERSION_SLIM_ZIL SPA_VERSION_23
402 #define SPA_VERSION_SA SPA_VERSION_24
403 #define SPA_VERSION_SCAN SPA_VERSION_25
404 #define SPA_VERSION_DIR_CLONES SPA_VERSION_26
405 #define SPA_VERSION_DEADLISTS SPA_VERSION_26
406 #define SPA_VERSION_FAST_SNAP SPA_VERSION_27
407 #define SPA_VERSION_MULTI_REPLACE SPA_VERSION_28
408
409 /*
410 * ZPL version - rev'd whenever an incompatible on-disk format change
411 * occurs. This is independent of SPA/DMU/ZAP versioning. You must
412 * also update the version_table[] and help message in zfs_prop.c.
413 *
414 * When changing, be sure to teach GRUB how to read the new format!
415 * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*}
416 */
417 #define ZPL_VERSION_1 1ULL
418 #define ZPL_VERSION_2 2ULL
419 #define ZPL_VERSION_3 3ULL
420 #define ZPL_VERSION_4 4ULL
421 #define ZPL_VERSION_5 5ULL
422 #define ZPL_VERSION ZPL_VERSION_5
423 #define ZPL_VERSION_STRING "5"
424
425 #define ZPL_VERSION_INITIAL ZPL_VERSION_1
426 #define ZPL_VERSION_DIRENT_TYPE ZPL_VERSION_2
427 #define ZPL_VERSION_FUID ZPL_VERSION_3
428 #define ZPL_VERSION_NORMALIZATION ZPL_VERSION_3
429 #define ZPL_VERSION_SYSATTR ZPL_VERSION_3
430 #define ZPL_VERSION_USERSPACE ZPL_VERSION_4
431 #define ZPL_VERSION_SA ZPL_VERSION_5
432
433 /* Rewind request information */
434 #define ZPOOL_NO_REWIND 1 /* No policy - default behavior */
435 #define ZPOOL_NEVER_REWIND 2 /* Do not search for best txg or rewind */
436 #define ZPOOL_TRY_REWIND 4 /* Search for best txg, but do not rewind */
437 #define ZPOOL_DO_REWIND 8 /* Rewind to best txg w/in deferred frees */
438 #define ZPOOL_EXTREME_REWIND 16 /* Allow extreme measures to find best txg */
439 #define ZPOOL_REWIND_MASK 28 /* All the possible rewind bits */
440 #define ZPOOL_REWIND_POLICIES 31 /* All the possible policy bits */
441
442 typedef struct zpool_rewind_policy {
443 uint32_t zrp_request; /* rewind behavior requested */
444 uint64_t zrp_maxmeta; /* max acceptable meta-data errors */
445 uint64_t zrp_maxdata; /* max acceptable data errors */
446 uint64_t zrp_txg; /* specific txg to load */
447 } zpool_rewind_policy_t;
448
449 /*
450 * The following are configuration names used in the nvlist describing a pool's
451 * configuration.
452 */
453 #define ZPOOL_CONFIG_VERSION "version"
454 #define ZPOOL_CONFIG_POOL_NAME "name"
455 #define ZPOOL_CONFIG_POOL_STATE "state"
456 #define ZPOOL_CONFIG_POOL_TXG "txg"
457 #define ZPOOL_CONFIG_POOL_GUID "pool_guid"
458 #define ZPOOL_CONFIG_CREATE_TXG "create_txg"
459 #define ZPOOL_CONFIG_TOP_GUID "top_guid"
460 #define ZPOOL_CONFIG_VDEV_TREE "vdev_tree"
461 #define ZPOOL_CONFIG_TYPE "type"
462 #define ZPOOL_CONFIG_CHILDREN "children"
463 #define ZPOOL_CONFIG_ID "id"
464 #define ZPOOL_CONFIG_GUID "guid"
465 #define ZPOOL_CONFIG_PATH "path"
466 #define ZPOOL_CONFIG_DEVID "devid"
467 #define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array"
468 #define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift"
469 #define ZPOOL_CONFIG_ASHIFT "ashift"
470 #define ZPOOL_CONFIG_ASIZE "asize"
471 #define ZPOOL_CONFIG_DTL "DTL"
472 #define ZPOOL_CONFIG_SCAN_STATS "scan_stats" /* not stored on disk */
473 #define ZPOOL_CONFIG_VDEV_STATS "vdev_stats" /* not stored on disk */
474 #define ZPOOL_CONFIG_WHOLE_DISK "whole_disk"
475 #define ZPOOL_CONFIG_ERRCOUNT "error_count"
476 #define ZPOOL_CONFIG_NOT_PRESENT "not_present"
477 #define ZPOOL_CONFIG_SPARES "spares"
478 #define ZPOOL_CONFIG_IS_SPARE "is_spare"
479 #define ZPOOL_CONFIG_NPARITY "nparity"
480 #define ZPOOL_CONFIG_HOSTID "hostid"
481 #define ZPOOL_CONFIG_HOSTNAME "hostname"
482 #define ZPOOL_CONFIG_LOADED_TIME "initial_load_time"
483 #define ZPOOL_CONFIG_UNSPARE "unspare"
484 #define ZPOOL_CONFIG_PHYS_PATH "phys_path"
485 #define ZPOOL_CONFIG_IS_LOG "is_log"
486 #define ZPOOL_CONFIG_L2CACHE "l2cache"
487 #define ZPOOL_CONFIG_HOLE_ARRAY "hole_array"
488 #define ZPOOL_CONFIG_VDEV_CHILDREN "vdev_children"
489 #define ZPOOL_CONFIG_IS_HOLE "is_hole"
490 #define ZPOOL_CONFIG_DDT_HISTOGRAM "ddt_histogram"
491 #define ZPOOL_CONFIG_DDT_OBJ_STATS "ddt_object_stats"
492 #define ZPOOL_CONFIG_DDT_STATS "ddt_stats"
493 #define ZPOOL_CONFIG_SPLIT "splitcfg"
494 #define ZPOOL_CONFIG_ORIG_GUID "orig_guid"
495 #define ZPOOL_CONFIG_SPLIT_GUID "split_guid"
496 #define ZPOOL_CONFIG_SPLIT_LIST "guid_list"
497 #define ZPOOL_CONFIG_REMOVING "removing"
498 #define ZPOOL_CONFIG_RESILVERING "resilvering"
499 #define ZPOOL_CONFIG_COMMENT "comment"
500 #define ZPOOL_CONFIG_SUSPENDED "suspended" /* not stored on disk */
501 #define ZPOOL_CONFIG_TIMESTAMP "timestamp" /* not stored on disk */
502 #define ZPOOL_CONFIG_BOOTFS "bootfs" /* not stored on disk */
503 #define ZPOOL_CONFIG_MISSING_DEVICES "missing_vdevs" /* not stored on disk */
504 #define ZPOOL_CONFIG_LOAD_INFO "load_info" /* not stored on disk */
505 /*
506 * The persistent vdev state is stored as separate values rather than a single
507 * 'vdev_state' entry. This is because a device can be in multiple states, such
508 * as offline and degraded.
509 */
510 #define ZPOOL_CONFIG_OFFLINE "offline"
511 #define ZPOOL_CONFIG_FAULTED "faulted"
512 #define ZPOOL_CONFIG_DEGRADED "degraded"
513 #define ZPOOL_CONFIG_REMOVED "removed"
514 #define ZPOOL_CONFIG_FRU "fru"
515 #define ZPOOL_CONFIG_AUX_STATE "aux_state"
516
517 /* Rewind policy parameters */
518 #define ZPOOL_REWIND_POLICY "rewind-policy"
519 #define ZPOOL_REWIND_REQUEST "rewind-request"
520 #define ZPOOL_REWIND_REQUEST_TXG "rewind-request-txg"
521 #define ZPOOL_REWIND_META_THRESH "rewind-meta-thresh"
522 #define ZPOOL_REWIND_DATA_THRESH "rewind-data-thresh"
523
524 /* Rewind data discovered */
525 #define ZPOOL_CONFIG_LOAD_TIME "rewind_txg_ts"
526 #define ZPOOL_CONFIG_LOAD_DATA_ERRORS "verify_data_errors"
527 #define ZPOOL_CONFIG_REWIND_TIME "seconds_of_rewind"
528
529 #define VDEV_TYPE_ROOT "root"
530 #define VDEV_TYPE_MIRROR "mirror"
531 #define VDEV_TYPE_REPLACING "replacing"
532 #define VDEV_TYPE_RAIDZ "raidz"
533 #define VDEV_TYPE_DISK "disk"
534 #define VDEV_TYPE_FILE "file"
535 #define VDEV_TYPE_MISSING "missing"
536 #define VDEV_TYPE_HOLE "hole"
537 #define VDEV_TYPE_SPARE "spare"
538 #define VDEV_TYPE_LOG "log"
539 #define VDEV_TYPE_L2CACHE "l2cache"
540
541 /*
542 * This is needed in userland to report the minimum necessary device size.
543 */
544 #define SPA_MINDEVSIZE (64ULL << 20)
545
546 /*
547 * The location of the pool configuration repository, shared between kernel and
548 * userland.
549 */
550 #define ZPOOL_CACHE "/etc/zfs/zpool.cache"
551
552 /*
553 * vdev states are ordered from least to most healthy.
554 * A vdev that's CANT_OPEN or below is considered unusable.
555 */
556 typedef enum vdev_state {
557 VDEV_STATE_UNKNOWN = 0, /* Uninitialized vdev */
558 VDEV_STATE_CLOSED, /* Not currently open */
559 VDEV_STATE_OFFLINE, /* Not allowed to open */
560 VDEV_STATE_REMOVED, /* Explicitly removed from system */
561 VDEV_STATE_CANT_OPEN, /* Tried to open, but failed */
562 VDEV_STATE_FAULTED, /* External request to fault device */
563 VDEV_STATE_DEGRADED, /* Replicated vdev with unhealthy kids */
564 VDEV_STATE_HEALTHY /* Presumed good */
565 } vdev_state_t;
566
567 #define VDEV_STATE_ONLINE VDEV_STATE_HEALTHY
568
569 /*
570 * vdev aux states. When a vdev is in the CANT_OPEN state, the aux field
571 * of the vdev stats structure uses these constants to distinguish why.
572 */
573 typedef enum vdev_aux {
574 VDEV_AUX_NONE, /* no error */
575 VDEV_AUX_OPEN_FAILED, /* ldi_open_*() or vn_open() failed */
576 VDEV_AUX_CORRUPT_DATA, /* bad label or disk contents */
577 VDEV_AUX_NO_REPLICAS, /* insufficient number of replicas */
578 VDEV_AUX_BAD_GUID_SUM, /* vdev guid sum doesn't match */
579 VDEV_AUX_TOO_SMALL, /* vdev size is too small */
580 VDEV_AUX_BAD_LABEL, /* the label is OK but invalid */
581 VDEV_AUX_VERSION_NEWER, /* on-disk version is too new */
582 VDEV_AUX_VERSION_OLDER, /* on-disk version is too old */
583 VDEV_AUX_SPARED, /* hot spare used in another pool */
584 VDEV_AUX_ERR_EXCEEDED, /* too many errors */
585 VDEV_AUX_IO_FAILURE, /* experienced I/O failure */
586 VDEV_AUX_BAD_LOG, /* cannot read log chain(s) */
587 VDEV_AUX_EXTERNAL, /* external diagnosis */
588 VDEV_AUX_SPLIT_POOL /* vdev was split off into another pool */
589 } vdev_aux_t;
590
591 /*
592 * pool state. The following states are written to disk as part of the normal
593 * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE. The remaining
594 * states are software abstractions used at various levels to communicate
595 * pool state.
596 */
597 typedef enum pool_state {
598 POOL_STATE_ACTIVE = 0, /* In active use */
599 POOL_STATE_EXPORTED, /* Explicitly exported */
600 POOL_STATE_DESTROYED, /* Explicitly destroyed */
601 POOL_STATE_SPARE, /* Reserved for hot spare use */
602 POOL_STATE_L2CACHE, /* Level 2 ARC device */
603 POOL_STATE_UNINITIALIZED, /* Internal spa_t state */
604 POOL_STATE_UNAVAIL, /* Internal libzfs state */
605 POOL_STATE_POTENTIALLY_ACTIVE /* Internal libzfs state */
606 } pool_state_t;
607
608 /*
609 * Scan Functions.
610 */
611 typedef enum pool_scan_func {
612 POOL_SCAN_NONE,
613 POOL_SCAN_SCRUB,
614 POOL_SCAN_RESILVER,
615 POOL_SCAN_FUNCS
616 } pool_scan_func_t;
617
618 /*
619 * ZIO types. Needed to interpret vdev statistics below.
620 */
621 typedef enum zio_type {
622 ZIO_TYPE_NULL = 0,
623 ZIO_TYPE_READ,
624 ZIO_TYPE_WRITE,
625 ZIO_TYPE_FREE,
626 ZIO_TYPE_CLAIM,
627 ZIO_TYPE_IOCTL,
628 ZIO_TYPES
629 } zio_type_t;
630
631 /*
632 * Pool statistics. Note: all fields should be 64-bit because this
633 * is passed between kernel and userland as an nvlist uint64 array.
634 */
635 typedef struct pool_scan_stat {
636 /* values stored on disk */
637 uint64_t pss_func; /* pool_scan_func_t */
638 uint64_t pss_state; /* dsl_scan_state_t */
639 uint64_t pss_start_time; /* scan start time */
640 uint64_t pss_end_time; /* scan end time */
641 uint64_t pss_to_examine; /* total bytes to scan */
642 uint64_t pss_examined; /* total examined bytes */
643 uint64_t pss_to_process; /* total bytes to process */
644 uint64_t pss_processed; /* total processed bytes */
645 uint64_t pss_errors; /* scan errors */
646
647 /* values not stored on disk */
648 uint64_t pss_pass_exam; /* examined bytes per scan pass */
649 uint64_t pss_pass_start; /* start time of a scan pass */
650 } pool_scan_stat_t;
651
652 typedef enum dsl_scan_state {
653 DSS_NONE,
654 DSS_SCANNING,
655 DSS_FINISHED,
656 DSS_CANCELED,
657 DSS_NUM_STATES
658 } dsl_scan_state_t;
659
660
661 /*
662 * Vdev statistics. Note: all fields should be 64-bit because this
663 * is passed between kernel and userland as an nvlist uint64 array.
664 */
665 typedef struct vdev_stat {
666 hrtime_t vs_timestamp; /* time since vdev load */
667 uint64_t vs_state; /* vdev state */
668 uint64_t vs_aux; /* see vdev_aux_t */
669 uint64_t vs_alloc; /* space allocated */
670 uint64_t vs_space; /* total capacity */
671 uint64_t vs_dspace; /* deflated capacity */
672 uint64_t vs_rsize; /* replaceable dev size */
673 uint64_t vs_ops[ZIO_TYPES]; /* operation count */
674 uint64_t vs_bytes[ZIO_TYPES]; /* bytes read/written */
675 uint64_t vs_read_errors; /* read errors */
676 uint64_t vs_write_errors; /* write errors */
677 uint64_t vs_checksum_errors; /* checksum errors */
678 uint64_t vs_self_healed; /* self-healed bytes */
679 uint64_t vs_scan_removing; /* removing? */
680 uint64_t vs_scan_processed; /* scan processed bytes */
681 } vdev_stat_t;
682
683 /*
684 * DDT statistics. Note: all fields should be 64-bit because this
685 * is passed between kernel and userland as an nvlist uint64 array.
686 */
687 typedef struct ddt_object {
688 uint64_t ddo_count; /* number of elments in ddt */
689 uint64_t ddo_dspace; /* size of ddt on disk */
690 uint64_t ddo_mspace; /* size of ddt in-core */
691 } ddt_object_t;
692
693 typedef struct ddt_stat {
694 uint64_t dds_blocks; /* blocks */
695 uint64_t dds_lsize; /* logical size */
696 uint64_t dds_psize; /* physical size */
697 uint64_t dds_dsize; /* deflated allocated size */
698 uint64_t dds_ref_blocks; /* referenced blocks */
699 uint64_t dds_ref_lsize; /* referenced lsize * refcnt */
700 uint64_t dds_ref_psize; /* referenced psize * refcnt */
701 uint64_t dds_ref_dsize; /* referenced dsize * refcnt */
702 } ddt_stat_t;
703
704 typedef struct ddt_histogram {
705 ddt_stat_t ddh_stat[64]; /* power-of-two histogram buckets */
706 } ddt_histogram_t;
707
708 #define ZVOL_DRIVER "zvol"
709 #define ZFS_DRIVER "zfs"
710 #define ZFS_DEV "/dev/zfs"
711
712 /* general zvol path */
713 #define ZVOL_DIR "/dev/zvol"
714 /* expansion */
715 #define ZVOL_PSEUDO_DEV "/devices/pseudo/zfs@0:"
716 /* for dump and swap */
717 #define ZVOL_FULL_DEV_DIR ZVOL_DIR "/dsk/"
718 #define ZVOL_FULL_RDEV_DIR ZVOL_DIR "/rdsk/"
719
720 #define ZVOL_PROP_NAME "name"
721 #define ZVOL_DEFAULT_BLOCKSIZE 8192
722
723 /*
724 * /dev/zfs ioctl numbers.
725 */
726 #define ZFS_IOC ('Z' << 8)
727
728 typedef enum zfs_ioc {
729 ZFS_IOC_POOL_CREATE = ZFS_IOC,
730 ZFS_IOC_POOL_DESTROY,
731 ZFS_IOC_POOL_IMPORT,
732 ZFS_IOC_POOL_EXPORT,
733 ZFS_IOC_POOL_CONFIGS,
734 ZFS_IOC_POOL_STATS,
735 ZFS_IOC_POOL_TRYIMPORT,
736 ZFS_IOC_POOL_SCAN,
737 ZFS_IOC_POOL_FREEZE,
738 ZFS_IOC_POOL_UPGRADE,
739 ZFS_IOC_POOL_GET_HISTORY,
740 ZFS_IOC_VDEV_ADD,
741 ZFS_IOC_VDEV_REMOVE,
742 ZFS_IOC_VDEV_SET_STATE,
743 ZFS_IOC_VDEV_ATTACH,
744 ZFS_IOC_VDEV_DETACH,
745 ZFS_IOC_VDEV_SETPATH,
746 ZFS_IOC_VDEV_SETFRU,
747 ZFS_IOC_OBJSET_STATS,
748 ZFS_IOC_OBJSET_ZPLPROPS,
749 ZFS_IOC_DATASET_LIST_NEXT,
750 ZFS_IOC_SNAPSHOT_LIST_NEXT,
751 ZFS_IOC_SET_PROP,
752 ZFS_IOC_CREATE,
753 ZFS_IOC_DESTROY,
754 ZFS_IOC_ROLLBACK,
755 ZFS_IOC_RENAME,
756 ZFS_IOC_RECV,
757 ZFS_IOC_SEND,
758 ZFS_IOC_INJECT_FAULT,
759 ZFS_IOC_CLEAR_FAULT,
760 ZFS_IOC_INJECT_LIST_NEXT,
761 ZFS_IOC_ERROR_LOG,
762 ZFS_IOC_CLEAR,
763 ZFS_IOC_PROMOTE,
764 ZFS_IOC_DESTROY_SNAPS,
765 ZFS_IOC_SNAPSHOT,
766 ZFS_IOC_DSOBJ_TO_DSNAME,
767 ZFS_IOC_OBJ_TO_PATH,
768 ZFS_IOC_POOL_SET_PROPS,
769 ZFS_IOC_POOL_GET_PROPS,
770 ZFS_IOC_SET_FSACL,
771 ZFS_IOC_GET_FSACL,
772 ZFS_IOC_SHARE,
773 ZFS_IOC_INHERIT_PROP,
774 ZFS_IOC_SMB_ACL,
775 ZFS_IOC_USERSPACE_ONE,
776 ZFS_IOC_USERSPACE_MANY,
777 ZFS_IOC_USERSPACE_UPGRADE,
778 ZFS_IOC_HOLD,
779 ZFS_IOC_RELEASE,
780 ZFS_IOC_GET_HOLDS,
781 ZFS_IOC_OBJSET_RECVD_PROPS,
782 ZFS_IOC_VDEV_SPLIT,
783 ZFS_IOC_NEXT_OBJ,
784 ZFS_IOC_DIFF,
785 ZFS_IOC_TMP_SNAPSHOT,
786 ZFS_IOC_OBJ_TO_STATS,
787 ZFS_IOC_POOL_REGUID
788 } zfs_ioc_t;
789
790 /*
791 * Internal SPA load state. Used by FMA diagnosis engine.
792 */
793 typedef enum {
794 SPA_LOAD_NONE, /* no load in progress */
795 SPA_LOAD_OPEN, /* normal open */
796 SPA_LOAD_IMPORT, /* import in progress */
797 SPA_LOAD_TRYIMPORT, /* tryimport in progress */
798 SPA_LOAD_RECOVER, /* recovery requested */
799 SPA_LOAD_ERROR /* load failed */
800 } spa_load_state_t;
801
802 /*
803 * Bookmark name values.
804 */
805 #define ZPOOL_ERR_LIST "error list"
806 #define ZPOOL_ERR_DATASET "dataset"
807 #define ZPOOL_ERR_OBJECT "object"
808
809 #define HIS_MAX_RECORD_LEN (MAXPATHLEN + MAXPATHLEN + 1)
810
811 /*
812 * The following are names used in the nvlist describing
813 * the pool's history log.
814 */
815 #define ZPOOL_HIST_RECORD "history record"
816 #define ZPOOL_HIST_TIME "history time"
817 #define ZPOOL_HIST_CMD "history command"
818 #define ZPOOL_HIST_WHO "history who"
819 #define ZPOOL_HIST_ZONE "history zone"
820 #define ZPOOL_HIST_HOST "history hostname"
821 #define ZPOOL_HIST_TXG "history txg"
822 #define ZPOOL_HIST_INT_EVENT "history internal event"
823 #define ZPOOL_HIST_INT_STR "history internal str"
824
825 /*
826 * Flags for ZFS_IOC_VDEV_SET_STATE
827 */
828 #define ZFS_ONLINE_CHECKREMOVE 0x1
829 #define ZFS_ONLINE_UNSPARE 0x2
830 #define ZFS_ONLINE_FORCEFAULT 0x4
831 #define ZFS_ONLINE_EXPAND 0x8
832 #define ZFS_OFFLINE_TEMPORARY 0x1
833
834 /*
835 * Flags for ZFS_IOC_POOL_IMPORT
836 */
837 #define ZFS_IMPORT_NORMAL 0x0
838 #define ZFS_IMPORT_VERBATIM 0x1
839 #define ZFS_IMPORT_ANY_HOST 0x2
840 #define ZFS_IMPORT_MISSING_LOG 0x4
841 #define ZFS_IMPORT_ONLY 0x8
842
843 /*
844 * Sysevent payload members. ZFS will generate the following sysevents with the
845 * given payloads:
846 *
847 * ESC_ZFS_RESILVER_START
848 * ESC_ZFS_RESILVER_END
849 * ESC_ZFS_POOL_DESTROY
850 * ESC_ZFS_POOL_REGUID
851 *
852 * ZFS_EV_POOL_NAME DATA_TYPE_STRING
853 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64
854 *
855 * ESC_ZFS_VDEV_REMOVE
856 * ESC_ZFS_VDEV_CLEAR
857 * ESC_ZFS_VDEV_CHECK
858 *
859 * ZFS_EV_POOL_NAME DATA_TYPE_STRING
860 * ZFS_EV_POOL_GUID DATA_TYPE_UINT64
861 * ZFS_EV_VDEV_PATH DATA_TYPE_STRING (optional)
862 * ZFS_EV_VDEV_GUID DATA_TYPE_UINT64
863 */
864 #define ZFS_EV_POOL_NAME "pool_name"
865 #define ZFS_EV_POOL_GUID "pool_guid"
866 #define ZFS_EV_VDEV_PATH "vdev_path"
867 #define ZFS_EV_VDEV_GUID "vdev_guid"
868
869 /*
870 * Note: This is encoded on-disk, so new events must be added to the
871 * end, and unused events can not be removed. Be sure to edit
872 * libzfs_pool.c: hist_event_table[].
873 */
874 typedef enum history_internal_events {
875 LOG_NO_EVENT = 0,
876 LOG_POOL_CREATE,
877 LOG_POOL_VDEV_ADD,
878 LOG_POOL_REMOVE,
879 LOG_POOL_DESTROY,
880 LOG_POOL_EXPORT,
881 LOG_POOL_IMPORT,
882 LOG_POOL_VDEV_ATTACH,
883 LOG_POOL_VDEV_REPLACE,
884 LOG_POOL_VDEV_DETACH,
885 LOG_POOL_VDEV_ONLINE,
886 LOG_POOL_VDEV_OFFLINE,
887 LOG_POOL_UPGRADE,
888 LOG_POOL_CLEAR,
889 LOG_POOL_SCAN,
890 LOG_POOL_PROPSET,
891 LOG_DS_CREATE,
892 LOG_DS_CLONE,
893 LOG_DS_DESTROY,
894 LOG_DS_DESTROY_BEGIN,
895 LOG_DS_INHERIT,
896 LOG_DS_PROPSET,
897 LOG_DS_QUOTA,
898 LOG_DS_PERM_UPDATE,
899 LOG_DS_PERM_REMOVE,
900 LOG_DS_PERM_WHO_REMOVE,
901 LOG_DS_PROMOTE,
902 LOG_DS_RECEIVE,
903 LOG_DS_RENAME,
904 LOG_DS_RESERVATION,
905 LOG_DS_REPLAY_INC_SYNC,
906 LOG_DS_REPLAY_FULL_SYNC,
907 LOG_DS_ROLLBACK,
908 LOG_DS_SNAPSHOT,
909 LOG_DS_UPGRADE,
910 LOG_DS_REFQUOTA,
911 LOG_DS_REFRESERV,
912 LOG_POOL_SCAN_DONE,
913 LOG_DS_USER_HOLD,
914 LOG_DS_USER_RELEASE,
915 LOG_POOL_SPLIT,
916 LOG_END
917 } history_internal_events_t;
918
919 #ifdef __cplusplus
920 }
921 #endif
922
923 #endif /* _SYS_FS_ZFS_H */