xref: /illumos-gate/usr/src/uts/common/sys/fs/zfs.h (revision ad135b5d644628e791c3188a6ecbd9c257961ef8)
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 (c) 2012 by Delphix. All rights reserved.
25  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
26  * Copyright (c) 2012, Joyent, 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_PROP_WRITTEN,
130 	ZFS_PROP_CLONES,
131 	ZFS_NUM_PROPS
132 } zfs_prop_t;
133 
134 typedef enum {
135 	ZFS_PROP_USERUSED,
136 	ZFS_PROP_USERQUOTA,
137 	ZFS_PROP_GROUPUSED,
138 	ZFS_PROP_GROUPQUOTA,
139 	ZFS_NUM_USERQUOTA_PROPS
140 } zfs_userquota_prop_t;
141 
142 extern const char *zfs_userquota_prop_prefixes[ZFS_NUM_USERQUOTA_PROPS];
143 
144 /*
145  * Pool properties are identified by these constants and must be added to the
146  * end of this list to ensure that external consumers are not affected
147  * by the change. If you make any changes to this list, be sure to update
148  * the property table in usr/src/common/zfs/zpool_prop.c.
149  */
150 typedef enum {
151 	ZPOOL_PROP_NAME,
152 	ZPOOL_PROP_SIZE,
153 	ZPOOL_PROP_CAPACITY,
154 	ZPOOL_PROP_ALTROOT,
155 	ZPOOL_PROP_HEALTH,
156 	ZPOOL_PROP_GUID,
157 	ZPOOL_PROP_VERSION,
158 	ZPOOL_PROP_BOOTFS,
159 	ZPOOL_PROP_DELEGATION,
160 	ZPOOL_PROP_AUTOREPLACE,
161 	ZPOOL_PROP_CACHEFILE,
162 	ZPOOL_PROP_FAILUREMODE,
163 	ZPOOL_PROP_LISTSNAPS,
164 	ZPOOL_PROP_AUTOEXPAND,
165 	ZPOOL_PROP_DEDUPDITTO,
166 	ZPOOL_PROP_DEDUPRATIO,
167 	ZPOOL_PROP_FREE,
168 	ZPOOL_PROP_ALLOCATED,
169 	ZPOOL_PROP_READONLY,
170 	ZPOOL_PROP_COMMENT,
171 	ZPOOL_PROP_EXPANDSZ,
172 	ZPOOL_PROP_FREEING,
173 	ZPOOL_NUM_PROPS
174 } zpool_prop_t;
175 
176 /* Small enough to not hog a whole line of printout in zpool(1M). */
177 #define	ZPROP_MAX_COMMENT	32
178 
179 #define	ZPROP_CONT		-2
180 #define	ZPROP_INVAL		-1
181 
182 #define	ZPROP_VALUE		"value"
183 #define	ZPROP_SOURCE		"source"
184 
185 typedef enum {
186 	ZPROP_SRC_NONE = 0x1,
187 	ZPROP_SRC_DEFAULT = 0x2,
188 	ZPROP_SRC_TEMPORARY = 0x4,
189 	ZPROP_SRC_LOCAL = 0x8,
190 	ZPROP_SRC_INHERITED = 0x10,
191 	ZPROP_SRC_RECEIVED = 0x20
192 } zprop_source_t;
193 
194 #define	ZPROP_SRC_ALL	0x3f
195 
196 #define	ZPROP_SOURCE_VAL_RECVD	"$recvd"
197 #define	ZPROP_N_MORE_ERRORS	"N_MORE_ERRORS"
198 /*
199  * Dataset flag implemented as a special entry in the props zap object
200  * indicating that the dataset has received properties on or after
201  * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties
202  * just as it did in earlier versions, and thereafter, local properties are
203  * preserved.
204  */
205 #define	ZPROP_HAS_RECVD		"$hasrecvd"
206 
207 typedef enum {
208 	ZPROP_ERR_NOCLEAR = 0x1, /* failure to clear existing props */
209 	ZPROP_ERR_NORESTORE = 0x2 /* failure to restore props on error */
210 } zprop_errflags_t;
211 
212 typedef int (*zprop_func)(int, void *);
213 
214 /*
215  * Properties to be set on the root file system of a new pool
216  * are stuffed into their own nvlist, which is then included in
217  * the properties nvlist with the pool properties.
218  */
219 #define	ZPOOL_ROOTFS_PROPS	"root-props-nvl"
220 
221 /*
222  * Dataset property functions shared between libzfs and kernel.
223  */
224 const char *zfs_prop_default_string(zfs_prop_t);
225 uint64_t zfs_prop_default_numeric(zfs_prop_t);
226 boolean_t zfs_prop_readonly(zfs_prop_t);
227 boolean_t zfs_prop_inheritable(zfs_prop_t);
228 boolean_t zfs_prop_setonce(zfs_prop_t);
229 const char *zfs_prop_to_name(zfs_prop_t);
230 zfs_prop_t zfs_name_to_prop(const char *);
231 boolean_t zfs_prop_user(const char *);
232 boolean_t zfs_prop_userquota(const char *);
233 boolean_t zfs_prop_written(const char *);
234 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);
235 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *);
236 uint64_t zfs_prop_random_value(zfs_prop_t, uint64_t seed);
237 boolean_t zfs_prop_valid_for_type(int, zfs_type_t);
238 
239 /*
240  * Pool property functions shared between libzfs and kernel.
241  */
242 zpool_prop_t zpool_name_to_prop(const char *);
243 const char *zpool_prop_to_name(zpool_prop_t);
244 const char *zpool_prop_default_string(zpool_prop_t);
245 uint64_t zpool_prop_default_numeric(zpool_prop_t);
246 boolean_t zpool_prop_readonly(zpool_prop_t);
247 boolean_t zpool_prop_feature(const char *);
248 boolean_t zpool_prop_unsupported(const char *name);
249 int zpool_prop_index_to_string(zpool_prop_t, uint64_t, const char **);
250 int zpool_prop_string_to_index(zpool_prop_t, const char *, uint64_t *);
251 uint64_t zpool_prop_random_value(zpool_prop_t, uint64_t seed);
252 
253 /*
254  * Definitions for the Delegation.
255  */
256 typedef enum {
257 	ZFS_DELEG_WHO_UNKNOWN = 0,
258 	ZFS_DELEG_USER = 'u',
259 	ZFS_DELEG_USER_SETS = 'U',
260 	ZFS_DELEG_GROUP = 'g',
261 	ZFS_DELEG_GROUP_SETS = 'G',
262 	ZFS_DELEG_EVERYONE = 'e',
263 	ZFS_DELEG_EVERYONE_SETS = 'E',
264 	ZFS_DELEG_CREATE = 'c',
265 	ZFS_DELEG_CREATE_SETS = 'C',
266 	ZFS_DELEG_NAMED_SET = 's',
267 	ZFS_DELEG_NAMED_SET_SETS = 'S'
268 } zfs_deleg_who_type_t;
269 
270 typedef enum {
271 	ZFS_DELEG_NONE = 0,
272 	ZFS_DELEG_PERM_LOCAL = 1,
273 	ZFS_DELEG_PERM_DESCENDENT = 2,
274 	ZFS_DELEG_PERM_LOCALDESCENDENT = 3,
275 	ZFS_DELEG_PERM_CREATE = 4
276 } zfs_deleg_inherit_t;
277 
278 #define	ZFS_DELEG_PERM_UID	"uid"
279 #define	ZFS_DELEG_PERM_GID	"gid"
280 #define	ZFS_DELEG_PERM_GROUPS	"groups"
281 
282 #define	ZFS_MLSLABEL_DEFAULT	"none"
283 
284 #define	ZFS_SMB_ACL_SRC		"src"
285 #define	ZFS_SMB_ACL_TARGET	"target"
286 
287 typedef enum {
288 	ZFS_CANMOUNT_OFF = 0,
289 	ZFS_CANMOUNT_ON = 1,
290 	ZFS_CANMOUNT_NOAUTO = 2
291 } zfs_canmount_type_t;
292 
293 typedef enum {
294 	ZFS_LOGBIAS_LATENCY = 0,
295 	ZFS_LOGBIAS_THROUGHPUT = 1
296 } zfs_logbias_op_t;
297 
298 typedef enum zfs_share_op {
299 	ZFS_SHARE_NFS = 0,
300 	ZFS_UNSHARE_NFS = 1,
301 	ZFS_SHARE_SMB = 2,
302 	ZFS_UNSHARE_SMB = 3
303 } zfs_share_op_t;
304 
305 typedef enum zfs_smb_acl_op {
306 	ZFS_SMB_ACL_ADD,
307 	ZFS_SMB_ACL_REMOVE,
308 	ZFS_SMB_ACL_RENAME,
309 	ZFS_SMB_ACL_PURGE
310 } zfs_smb_acl_op_t;
311 
312 typedef enum zfs_cache_type {
313 	ZFS_CACHE_NONE = 0,
314 	ZFS_CACHE_METADATA = 1,
315 	ZFS_CACHE_ALL = 2
316 } zfs_cache_type_t;
317 
318 typedef enum {
319 	ZFS_SYNC_STANDARD = 0,
320 	ZFS_SYNC_ALWAYS = 1,
321 	ZFS_SYNC_DISABLED = 2
322 } zfs_sync_type_t;
323 
324 
325 /*
326  * On-disk version number.
327  */
328 #define	SPA_VERSION_1			1ULL
329 #define	SPA_VERSION_2			2ULL
330 #define	SPA_VERSION_3			3ULL
331 #define	SPA_VERSION_4			4ULL
332 #define	SPA_VERSION_5			5ULL
333 #define	SPA_VERSION_6			6ULL
334 #define	SPA_VERSION_7			7ULL
335 #define	SPA_VERSION_8			8ULL
336 #define	SPA_VERSION_9			9ULL
337 #define	SPA_VERSION_10			10ULL
338 #define	SPA_VERSION_11			11ULL
339 #define	SPA_VERSION_12			12ULL
340 #define	SPA_VERSION_13			13ULL
341 #define	SPA_VERSION_14			14ULL
342 #define	SPA_VERSION_15			15ULL
343 #define	SPA_VERSION_16			16ULL
344 #define	SPA_VERSION_17			17ULL
345 #define	SPA_VERSION_18			18ULL
346 #define	SPA_VERSION_19			19ULL
347 #define	SPA_VERSION_20			20ULL
348 #define	SPA_VERSION_21			21ULL
349 #define	SPA_VERSION_22			22ULL
350 #define	SPA_VERSION_23			23ULL
351 #define	SPA_VERSION_24			24ULL
352 #define	SPA_VERSION_25			25ULL
353 #define	SPA_VERSION_26			26ULL
354 #define	SPA_VERSION_27			27ULL
355 #define	SPA_VERSION_28			28ULL
356 #define	SPA_VERSION_5000		5000ULL
357 
358 /*
359  * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk
360  * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*},
361  * and do the appropriate changes.  Also bump the version number in
362  * usr/src/grub/capability.
363  */
364 #define	SPA_VERSION			SPA_VERSION_5000
365 #define	SPA_VERSION_STRING		"5000"
366 
367 /*
368  * Symbolic names for the changes that caused a SPA_VERSION switch.
369  * Used in the code when checking for presence or absence of a feature.
370  * Feel free to define multiple symbolic names for each version if there
371  * were multiple changes to on-disk structures during that version.
372  *
373  * NOTE: When checking the current SPA_VERSION in your code, be sure
374  *       to use spa_version() since it reports the version of the
375  *       last synced uberblock.  Checking the in-flight version can
376  *       be dangerous in some cases.
377  */
378 #define	SPA_VERSION_INITIAL		SPA_VERSION_1
379 #define	SPA_VERSION_DITTO_BLOCKS	SPA_VERSION_2
380 #define	SPA_VERSION_SPARES		SPA_VERSION_3
381 #define	SPA_VERSION_RAIDZ2		SPA_VERSION_3
382 #define	SPA_VERSION_BPOBJ_ACCOUNT	SPA_VERSION_3
383 #define	SPA_VERSION_RAIDZ_DEFLATE	SPA_VERSION_3
384 #define	SPA_VERSION_DNODE_BYTES		SPA_VERSION_3
385 #define	SPA_VERSION_ZPOOL_HISTORY	SPA_VERSION_4
386 #define	SPA_VERSION_GZIP_COMPRESSION	SPA_VERSION_5
387 #define	SPA_VERSION_BOOTFS		SPA_VERSION_6
388 #define	SPA_VERSION_SLOGS		SPA_VERSION_7
389 #define	SPA_VERSION_DELEGATED_PERMS	SPA_VERSION_8
390 #define	SPA_VERSION_FUID		SPA_VERSION_9
391 #define	SPA_VERSION_REFRESERVATION	SPA_VERSION_9
392 #define	SPA_VERSION_REFQUOTA		SPA_VERSION_9
393 #define	SPA_VERSION_UNIQUE_ACCURATE	SPA_VERSION_9
394 #define	SPA_VERSION_L2CACHE		SPA_VERSION_10
395 #define	SPA_VERSION_NEXT_CLONES		SPA_VERSION_11
396 #define	SPA_VERSION_ORIGIN		SPA_VERSION_11
397 #define	SPA_VERSION_DSL_SCRUB		SPA_VERSION_11
398 #define	SPA_VERSION_SNAP_PROPS		SPA_VERSION_12
399 #define	SPA_VERSION_USED_BREAKDOWN	SPA_VERSION_13
400 #define	SPA_VERSION_PASSTHROUGH_X	SPA_VERSION_14
401 #define	SPA_VERSION_USERSPACE		SPA_VERSION_15
402 #define	SPA_VERSION_STMF_PROP		SPA_VERSION_16
403 #define	SPA_VERSION_RAIDZ3		SPA_VERSION_17
404 #define	SPA_VERSION_USERREFS		SPA_VERSION_18
405 #define	SPA_VERSION_HOLES		SPA_VERSION_19
406 #define	SPA_VERSION_ZLE_COMPRESSION	SPA_VERSION_20
407 #define	SPA_VERSION_DEDUP		SPA_VERSION_21
408 #define	SPA_VERSION_RECVD_PROPS		SPA_VERSION_22
409 #define	SPA_VERSION_SLIM_ZIL		SPA_VERSION_23
410 #define	SPA_VERSION_SA			SPA_VERSION_24
411 #define	SPA_VERSION_SCAN		SPA_VERSION_25
412 #define	SPA_VERSION_DIR_CLONES		SPA_VERSION_26
413 #define	SPA_VERSION_DEADLISTS		SPA_VERSION_26
414 #define	SPA_VERSION_FAST_SNAP		SPA_VERSION_27
415 #define	SPA_VERSION_MULTI_REPLACE	SPA_VERSION_28
416 #define	SPA_VERSION_BEFORE_FEATURES	SPA_VERSION_28
417 #define	SPA_VERSION_FEATURES		SPA_VERSION_5000
418 
419 #define	SPA_VERSION_IS_SUPPORTED(v) \
420 	(((v) >= SPA_VERSION_INITIAL && (v) <= SPA_VERSION_BEFORE_FEATURES) || \
421 	((v) >= SPA_VERSION_FEATURES && (v) <= SPA_VERSION))
422 
423 /*
424  * ZPL version - rev'd whenever an incompatible on-disk format change
425  * occurs.  This is independent of SPA/DMU/ZAP versioning.  You must
426  * also update the version_table[] and help message in zfs_prop.c.
427  *
428  * When changing, be sure to teach GRUB how to read the new format!
429  * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*}
430  */
431 #define	ZPL_VERSION_1			1ULL
432 #define	ZPL_VERSION_2			2ULL
433 #define	ZPL_VERSION_3			3ULL
434 #define	ZPL_VERSION_4			4ULL
435 #define	ZPL_VERSION_5			5ULL
436 #define	ZPL_VERSION			ZPL_VERSION_5
437 #define	ZPL_VERSION_STRING		"5"
438 
439 #define	ZPL_VERSION_INITIAL		ZPL_VERSION_1
440 #define	ZPL_VERSION_DIRENT_TYPE		ZPL_VERSION_2
441 #define	ZPL_VERSION_FUID		ZPL_VERSION_3
442 #define	ZPL_VERSION_NORMALIZATION	ZPL_VERSION_3
443 #define	ZPL_VERSION_SYSATTR		ZPL_VERSION_3
444 #define	ZPL_VERSION_USERSPACE		ZPL_VERSION_4
445 #define	ZPL_VERSION_SA			ZPL_VERSION_5
446 
447 /* Rewind request information */
448 #define	ZPOOL_NO_REWIND		1  /* No policy - default behavior */
449 #define	ZPOOL_NEVER_REWIND	2  /* Do not search for best txg or rewind */
450 #define	ZPOOL_TRY_REWIND	4  /* Search for best txg, but do not rewind */
451 #define	ZPOOL_DO_REWIND		8  /* Rewind to best txg w/in deferred frees */
452 #define	ZPOOL_EXTREME_REWIND	16 /* Allow extreme measures to find best txg */
453 #define	ZPOOL_REWIND_MASK	28 /* All the possible rewind bits */
454 #define	ZPOOL_REWIND_POLICIES	31 /* All the possible policy bits */
455 
456 typedef struct zpool_rewind_policy {
457 	uint32_t	zrp_request;	/* rewind behavior requested */
458 	uint64_t	zrp_maxmeta;	/* max acceptable meta-data errors */
459 	uint64_t	zrp_maxdata;	/* max acceptable data errors */
460 	uint64_t	zrp_txg;	/* specific txg to load */
461 } zpool_rewind_policy_t;
462 
463 /*
464  * The following are configuration names used in the nvlist describing a pool's
465  * configuration.
466  */
467 #define	ZPOOL_CONFIG_VERSION		"version"
468 #define	ZPOOL_CONFIG_POOL_NAME		"name"
469 #define	ZPOOL_CONFIG_POOL_STATE		"state"
470 #define	ZPOOL_CONFIG_POOL_TXG		"txg"
471 #define	ZPOOL_CONFIG_POOL_GUID		"pool_guid"
472 #define	ZPOOL_CONFIG_CREATE_TXG		"create_txg"
473 #define	ZPOOL_CONFIG_TOP_GUID		"top_guid"
474 #define	ZPOOL_CONFIG_VDEV_TREE		"vdev_tree"
475 #define	ZPOOL_CONFIG_TYPE		"type"
476 #define	ZPOOL_CONFIG_CHILDREN		"children"
477 #define	ZPOOL_CONFIG_ID			"id"
478 #define	ZPOOL_CONFIG_GUID		"guid"
479 #define	ZPOOL_CONFIG_PATH		"path"
480 #define	ZPOOL_CONFIG_DEVID		"devid"
481 #define	ZPOOL_CONFIG_METASLAB_ARRAY	"metaslab_array"
482 #define	ZPOOL_CONFIG_METASLAB_SHIFT	"metaslab_shift"
483 #define	ZPOOL_CONFIG_ASHIFT		"ashift"
484 #define	ZPOOL_CONFIG_ASIZE		"asize"
485 #define	ZPOOL_CONFIG_DTL		"DTL"
486 #define	ZPOOL_CONFIG_SCAN_STATS		"scan_stats"	/* not stored on disk */
487 #define	ZPOOL_CONFIG_VDEV_STATS		"vdev_stats"	/* not stored on disk */
488 #define	ZPOOL_CONFIG_WHOLE_DISK		"whole_disk"
489 #define	ZPOOL_CONFIG_ERRCOUNT		"error_count"
490 #define	ZPOOL_CONFIG_NOT_PRESENT	"not_present"
491 #define	ZPOOL_CONFIG_SPARES		"spares"
492 #define	ZPOOL_CONFIG_IS_SPARE		"is_spare"
493 #define	ZPOOL_CONFIG_NPARITY		"nparity"
494 #define	ZPOOL_CONFIG_HOSTID		"hostid"
495 #define	ZPOOL_CONFIG_HOSTNAME		"hostname"
496 #define	ZPOOL_CONFIG_LOADED_TIME	"initial_load_time"
497 #define	ZPOOL_CONFIG_UNSPARE		"unspare"
498 #define	ZPOOL_CONFIG_PHYS_PATH		"phys_path"
499 #define	ZPOOL_CONFIG_IS_LOG		"is_log"
500 #define	ZPOOL_CONFIG_L2CACHE		"l2cache"
501 #define	ZPOOL_CONFIG_HOLE_ARRAY		"hole_array"
502 #define	ZPOOL_CONFIG_VDEV_CHILDREN	"vdev_children"
503 #define	ZPOOL_CONFIG_IS_HOLE		"is_hole"
504 #define	ZPOOL_CONFIG_DDT_HISTOGRAM	"ddt_histogram"
505 #define	ZPOOL_CONFIG_DDT_OBJ_STATS	"ddt_object_stats"
506 #define	ZPOOL_CONFIG_DDT_STATS		"ddt_stats"
507 #define	ZPOOL_CONFIG_SPLIT		"splitcfg"
508 #define	ZPOOL_CONFIG_ORIG_GUID		"orig_guid"
509 #define	ZPOOL_CONFIG_SPLIT_GUID		"split_guid"
510 #define	ZPOOL_CONFIG_SPLIT_LIST		"guid_list"
511 #define	ZPOOL_CONFIG_REMOVING		"removing"
512 #define	ZPOOL_CONFIG_RESILVERING	"resilvering"
513 #define	ZPOOL_CONFIG_COMMENT		"comment"
514 #define	ZPOOL_CONFIG_SUSPENDED		"suspended"	/* not stored on disk */
515 #define	ZPOOL_CONFIG_TIMESTAMP		"timestamp"	/* not stored on disk */
516 #define	ZPOOL_CONFIG_BOOTFS		"bootfs"	/* not stored on disk */
517 #define	ZPOOL_CONFIG_MISSING_DEVICES	"missing_vdevs"	/* not stored on disk */
518 #define	ZPOOL_CONFIG_LOAD_INFO		"load_info"	/* not stored on disk */
519 #define	ZPOOL_CONFIG_REWIND_INFO	"rewind_info"	/* not stored on disk */
520 #define	ZPOOL_CONFIG_UNSUP_FEAT		"unsup_feat"	/* not stored on disk */
521 #define	ZPOOL_CONFIG_CAN_RDONLY		"can_rdonly"	/* not stored on disk */
522 #define	ZPOOL_CONFIG_FEATURES_FOR_READ	"features_for_read"
523 #define	ZPOOL_CONFIG_FEATURE_STATS	"feature_stats"	/* not stored on disk */
524 /*
525  * The persistent vdev state is stored as separate values rather than a single
526  * 'vdev_state' entry.  This is because a device can be in multiple states, such
527  * as offline and degraded.
528  */
529 #define	ZPOOL_CONFIG_OFFLINE		"offline"
530 #define	ZPOOL_CONFIG_FAULTED		"faulted"
531 #define	ZPOOL_CONFIG_DEGRADED		"degraded"
532 #define	ZPOOL_CONFIG_REMOVED		"removed"
533 #define	ZPOOL_CONFIG_FRU		"fru"
534 #define	ZPOOL_CONFIG_AUX_STATE		"aux_state"
535 
536 /* Rewind policy parameters */
537 #define	ZPOOL_REWIND_POLICY		"rewind-policy"
538 #define	ZPOOL_REWIND_REQUEST		"rewind-request"
539 #define	ZPOOL_REWIND_REQUEST_TXG	"rewind-request-txg"
540 #define	ZPOOL_REWIND_META_THRESH	"rewind-meta-thresh"
541 #define	ZPOOL_REWIND_DATA_THRESH	"rewind-data-thresh"
542 
543 /* Rewind data discovered */
544 #define	ZPOOL_CONFIG_LOAD_TIME		"rewind_txg_ts"
545 #define	ZPOOL_CONFIG_LOAD_DATA_ERRORS	"verify_data_errors"
546 #define	ZPOOL_CONFIG_REWIND_TIME	"seconds_of_rewind"
547 
548 #define	VDEV_TYPE_ROOT			"root"
549 #define	VDEV_TYPE_MIRROR		"mirror"
550 #define	VDEV_TYPE_REPLACING		"replacing"
551 #define	VDEV_TYPE_RAIDZ			"raidz"
552 #define	VDEV_TYPE_DISK			"disk"
553 #define	VDEV_TYPE_FILE			"file"
554 #define	VDEV_TYPE_MISSING		"missing"
555 #define	VDEV_TYPE_HOLE			"hole"
556 #define	VDEV_TYPE_SPARE			"spare"
557 #define	VDEV_TYPE_LOG			"log"
558 #define	VDEV_TYPE_L2CACHE		"l2cache"
559 
560 /*
561  * This is needed in userland to report the minimum necessary device size.
562  */
563 #define	SPA_MINDEVSIZE		(64ULL << 20)
564 
565 /*
566  * The location of the pool configuration repository, shared between kernel and
567  * userland.
568  */
569 #define	ZPOOL_CACHE		"/etc/zfs/zpool.cache"
570 
571 /*
572  * vdev states are ordered from least to most healthy.
573  * A vdev that's CANT_OPEN or below is considered unusable.
574  */
575 typedef enum vdev_state {
576 	VDEV_STATE_UNKNOWN = 0,	/* Uninitialized vdev			*/
577 	VDEV_STATE_CLOSED,	/* Not currently open			*/
578 	VDEV_STATE_OFFLINE,	/* Not allowed to open			*/
579 	VDEV_STATE_REMOVED,	/* Explicitly removed from system	*/
580 	VDEV_STATE_CANT_OPEN,	/* Tried to open, but failed		*/
581 	VDEV_STATE_FAULTED,	/* External request to fault device	*/
582 	VDEV_STATE_DEGRADED,	/* Replicated vdev with unhealthy kids	*/
583 	VDEV_STATE_HEALTHY	/* Presumed good			*/
584 } vdev_state_t;
585 
586 #define	VDEV_STATE_ONLINE	VDEV_STATE_HEALTHY
587 
588 /*
589  * vdev aux states.  When a vdev is in the CANT_OPEN state, the aux field
590  * of the vdev stats structure uses these constants to distinguish why.
591  */
592 typedef enum vdev_aux {
593 	VDEV_AUX_NONE,		/* no error				*/
594 	VDEV_AUX_OPEN_FAILED,	/* ldi_open_*() or vn_open() failed	*/
595 	VDEV_AUX_CORRUPT_DATA,	/* bad label or disk contents		*/
596 	VDEV_AUX_NO_REPLICAS,	/* insufficient number of replicas	*/
597 	VDEV_AUX_BAD_GUID_SUM,	/* vdev guid sum doesn't match		*/
598 	VDEV_AUX_TOO_SMALL,	/* vdev size is too small		*/
599 	VDEV_AUX_BAD_LABEL,	/* the label is OK but invalid		*/
600 	VDEV_AUX_VERSION_NEWER,	/* on-disk version is too new		*/
601 	VDEV_AUX_VERSION_OLDER,	/* on-disk version is too old		*/
602 	VDEV_AUX_UNSUP_FEAT,	/* unsupported features			*/
603 	VDEV_AUX_SPARED,	/* hot spare used in another pool	*/
604 	VDEV_AUX_ERR_EXCEEDED,	/* too many errors			*/
605 	VDEV_AUX_IO_FAILURE,	/* experienced I/O failure		*/
606 	VDEV_AUX_BAD_LOG,	/* cannot read log chain(s)		*/
607 	VDEV_AUX_EXTERNAL,	/* external diagnosis			*/
608 	VDEV_AUX_SPLIT_POOL	/* vdev was split off into another pool	*/
609 } vdev_aux_t;
610 
611 /*
612  * pool state.  The following states are written to disk as part of the normal
613  * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE.  The remaining
614  * states are software abstractions used at various levels to communicate
615  * pool state.
616  */
617 typedef enum pool_state {
618 	POOL_STATE_ACTIVE = 0,		/* In active use		*/
619 	POOL_STATE_EXPORTED,		/* Explicitly exported		*/
620 	POOL_STATE_DESTROYED,		/* Explicitly destroyed		*/
621 	POOL_STATE_SPARE,		/* Reserved for hot spare use	*/
622 	POOL_STATE_L2CACHE,		/* Level 2 ARC device		*/
623 	POOL_STATE_UNINITIALIZED,	/* Internal spa_t state		*/
624 	POOL_STATE_UNAVAIL,		/* Internal libzfs state	*/
625 	POOL_STATE_POTENTIALLY_ACTIVE	/* Internal libzfs state	*/
626 } pool_state_t;
627 
628 /*
629  * Scan Functions.
630  */
631 typedef enum pool_scan_func {
632 	POOL_SCAN_NONE,
633 	POOL_SCAN_SCRUB,
634 	POOL_SCAN_RESILVER,
635 	POOL_SCAN_FUNCS
636 } pool_scan_func_t;
637 
638 /*
639  * ZIO types.  Needed to interpret vdev statistics below.
640  */
641 typedef enum zio_type {
642 	ZIO_TYPE_NULL = 0,
643 	ZIO_TYPE_READ,
644 	ZIO_TYPE_WRITE,
645 	ZIO_TYPE_FREE,
646 	ZIO_TYPE_CLAIM,
647 	ZIO_TYPE_IOCTL,
648 	ZIO_TYPES
649 } zio_type_t;
650 
651 /*
652  * Pool statistics.  Note: all fields should be 64-bit because this
653  * is passed between kernel and userland as an nvlist uint64 array.
654  */
655 typedef struct pool_scan_stat {
656 	/* values stored on disk */
657 	uint64_t	pss_func;	/* pool_scan_func_t */
658 	uint64_t	pss_state;	/* dsl_scan_state_t */
659 	uint64_t	pss_start_time;	/* scan start time */
660 	uint64_t	pss_end_time;	/* scan end time */
661 	uint64_t	pss_to_examine;	/* total bytes to scan */
662 	uint64_t	pss_examined;	/* total examined bytes	*/
663 	uint64_t	pss_to_process; /* total bytes to process */
664 	uint64_t	pss_processed;	/* total processed bytes */
665 	uint64_t	pss_errors;	/* scan errors	*/
666 
667 	/* values not stored on disk */
668 	uint64_t	pss_pass_exam;	/* examined bytes per scan pass */
669 	uint64_t	pss_pass_start;	/* start time of a scan pass */
670 } pool_scan_stat_t;
671 
672 typedef enum dsl_scan_state {
673 	DSS_NONE,
674 	DSS_SCANNING,
675 	DSS_FINISHED,
676 	DSS_CANCELED,
677 	DSS_NUM_STATES
678 } dsl_scan_state_t;
679 
680 
681 /*
682  * Vdev statistics.  Note: all fields should be 64-bit because this
683  * is passed between kernel and userland as an nvlist uint64 array.
684  */
685 typedef struct vdev_stat {
686 	hrtime_t	vs_timestamp;		/* time since vdev load	*/
687 	uint64_t	vs_state;		/* vdev state		*/
688 	uint64_t	vs_aux;			/* see vdev_aux_t	*/
689 	uint64_t	vs_alloc;		/* space allocated	*/
690 	uint64_t	vs_space;		/* total capacity	*/
691 	uint64_t	vs_dspace;		/* deflated capacity	*/
692 	uint64_t	vs_rsize;		/* replaceable dev size */
693 	uint64_t	vs_esize;		/* expandable dev size */
694 	uint64_t	vs_ops[ZIO_TYPES];	/* operation count	*/
695 	uint64_t	vs_bytes[ZIO_TYPES];	/* bytes read/written	*/
696 	uint64_t	vs_read_errors;		/* read errors		*/
697 	uint64_t	vs_write_errors;	/* write errors		*/
698 	uint64_t	vs_checksum_errors;	/* checksum errors	*/
699 	uint64_t	vs_self_healed;		/* self-healed bytes	*/
700 	uint64_t	vs_scan_removing;	/* removing?	*/
701 	uint64_t	vs_scan_processed;	/* scan processed bytes	*/
702 } vdev_stat_t;
703 
704 /*
705  * DDT statistics.  Note: all fields should be 64-bit because this
706  * is passed between kernel and userland as an nvlist uint64 array.
707  */
708 typedef struct ddt_object {
709 	uint64_t	ddo_count;	/* number of elments in ddt 	*/
710 	uint64_t	ddo_dspace;	/* size of ddt on disk		*/
711 	uint64_t	ddo_mspace;	/* size of ddt in-core		*/
712 } ddt_object_t;
713 
714 typedef struct ddt_stat {
715 	uint64_t	dds_blocks;	/* blocks			*/
716 	uint64_t	dds_lsize;	/* logical size			*/
717 	uint64_t	dds_psize;	/* physical size		*/
718 	uint64_t	dds_dsize;	/* deflated allocated size	*/
719 	uint64_t	dds_ref_blocks;	/* referenced blocks		*/
720 	uint64_t	dds_ref_lsize;	/* referenced lsize * refcnt	*/
721 	uint64_t	dds_ref_psize;	/* referenced psize * refcnt	*/
722 	uint64_t	dds_ref_dsize;	/* referenced dsize * refcnt	*/
723 } ddt_stat_t;
724 
725 typedef struct ddt_histogram {
726 	ddt_stat_t	ddh_stat[64];	/* power-of-two histogram buckets */
727 } ddt_histogram_t;
728 
729 #define	ZVOL_DRIVER	"zvol"
730 #define	ZFS_DRIVER	"zfs"
731 #define	ZFS_DEV		"/dev/zfs"
732 
733 /* general zvol path */
734 #define	ZVOL_DIR		"/dev/zvol"
735 /* expansion */
736 #define	ZVOL_PSEUDO_DEV		"/devices/pseudo/zfs@0:"
737 /* for dump and swap */
738 #define	ZVOL_FULL_DEV_DIR	ZVOL_DIR "/dsk/"
739 #define	ZVOL_FULL_RDEV_DIR	ZVOL_DIR "/rdsk/"
740 
741 #define	ZVOL_PROP_NAME		"name"
742 #define	ZVOL_DEFAULT_BLOCKSIZE	8192
743 
744 /*
745  * /dev/zfs ioctl numbers.
746  */
747 #define	ZFS_IOC		('Z' << 8)
748 
749 typedef enum zfs_ioc {
750 	ZFS_IOC_POOL_CREATE = ZFS_IOC,
751 	ZFS_IOC_POOL_DESTROY,
752 	ZFS_IOC_POOL_IMPORT,
753 	ZFS_IOC_POOL_EXPORT,
754 	ZFS_IOC_POOL_CONFIGS,
755 	ZFS_IOC_POOL_STATS,
756 	ZFS_IOC_POOL_TRYIMPORT,
757 	ZFS_IOC_POOL_SCAN,
758 	ZFS_IOC_POOL_FREEZE,
759 	ZFS_IOC_POOL_UPGRADE,
760 	ZFS_IOC_POOL_GET_HISTORY,
761 	ZFS_IOC_VDEV_ADD,
762 	ZFS_IOC_VDEV_REMOVE,
763 	ZFS_IOC_VDEV_SET_STATE,
764 	ZFS_IOC_VDEV_ATTACH,
765 	ZFS_IOC_VDEV_DETACH,
766 	ZFS_IOC_VDEV_SETPATH,
767 	ZFS_IOC_VDEV_SETFRU,
768 	ZFS_IOC_OBJSET_STATS,
769 	ZFS_IOC_OBJSET_ZPLPROPS,
770 	ZFS_IOC_DATASET_LIST_NEXT,
771 	ZFS_IOC_SNAPSHOT_LIST_NEXT,
772 	ZFS_IOC_SET_PROP,
773 	ZFS_IOC_CREATE,
774 	ZFS_IOC_DESTROY,
775 	ZFS_IOC_ROLLBACK,
776 	ZFS_IOC_RENAME,
777 	ZFS_IOC_RECV,
778 	ZFS_IOC_SEND,
779 	ZFS_IOC_INJECT_FAULT,
780 	ZFS_IOC_CLEAR_FAULT,
781 	ZFS_IOC_INJECT_LIST_NEXT,
782 	ZFS_IOC_ERROR_LOG,
783 	ZFS_IOC_CLEAR,
784 	ZFS_IOC_PROMOTE,
785 	ZFS_IOC_SNAPSHOT,
786 	ZFS_IOC_DSOBJ_TO_DSNAME,
787 	ZFS_IOC_OBJ_TO_PATH,
788 	ZFS_IOC_POOL_SET_PROPS,
789 	ZFS_IOC_POOL_GET_PROPS,
790 	ZFS_IOC_SET_FSACL,
791 	ZFS_IOC_GET_FSACL,
792 	ZFS_IOC_SHARE,
793 	ZFS_IOC_INHERIT_PROP,
794 	ZFS_IOC_SMB_ACL,
795 	ZFS_IOC_USERSPACE_ONE,
796 	ZFS_IOC_USERSPACE_MANY,
797 	ZFS_IOC_USERSPACE_UPGRADE,
798 	ZFS_IOC_HOLD,
799 	ZFS_IOC_RELEASE,
800 	ZFS_IOC_GET_HOLDS,
801 	ZFS_IOC_OBJSET_RECVD_PROPS,
802 	ZFS_IOC_VDEV_SPLIT,
803 	ZFS_IOC_NEXT_OBJ,
804 	ZFS_IOC_DIFF,
805 	ZFS_IOC_TMP_SNAPSHOT,
806 	ZFS_IOC_OBJ_TO_STATS,
807 	ZFS_IOC_SPACE_WRITTEN,
808 	ZFS_IOC_SPACE_SNAPS,
809 	ZFS_IOC_DESTROY_SNAPS_NVL,
810 	ZFS_IOC_POOL_REGUID,
811 	ZFS_IOC_POOL_REOPEN,
812 	ZFS_IOC_SEND_PROGRESS
813 } zfs_ioc_t;
814 
815 /*
816  * Internal SPA load state.  Used by FMA diagnosis engine.
817  */
818 typedef enum {
819 	SPA_LOAD_NONE,		/* no load in progress	*/
820 	SPA_LOAD_OPEN,		/* normal open		*/
821 	SPA_LOAD_IMPORT,	/* import in progress	*/
822 	SPA_LOAD_TRYIMPORT,	/* tryimport in progress */
823 	SPA_LOAD_RECOVER,	/* recovery requested	*/
824 	SPA_LOAD_ERROR		/* load failed		*/
825 } spa_load_state_t;
826 
827 /*
828  * Bookmark name values.
829  */
830 #define	ZPOOL_ERR_LIST		"error list"
831 #define	ZPOOL_ERR_DATASET	"dataset"
832 #define	ZPOOL_ERR_OBJECT	"object"
833 
834 #define	HIS_MAX_RECORD_LEN	(MAXPATHLEN + MAXPATHLEN + 1)
835 
836 /*
837  * The following are names used in the nvlist describing
838  * the pool's history log.
839  */
840 #define	ZPOOL_HIST_RECORD	"history record"
841 #define	ZPOOL_HIST_TIME		"history time"
842 #define	ZPOOL_HIST_CMD		"history command"
843 #define	ZPOOL_HIST_WHO		"history who"
844 #define	ZPOOL_HIST_ZONE		"history zone"
845 #define	ZPOOL_HIST_HOST		"history hostname"
846 #define	ZPOOL_HIST_TXG		"history txg"
847 #define	ZPOOL_HIST_INT_EVENT	"history internal event"
848 #define	ZPOOL_HIST_INT_STR	"history internal str"
849 
850 /*
851  * Flags for ZFS_IOC_VDEV_SET_STATE
852  */
853 #define	ZFS_ONLINE_CHECKREMOVE	0x1
854 #define	ZFS_ONLINE_UNSPARE	0x2
855 #define	ZFS_ONLINE_FORCEFAULT	0x4
856 #define	ZFS_ONLINE_EXPAND	0x8
857 #define	ZFS_OFFLINE_TEMPORARY	0x1
858 
859 /*
860  * Flags for ZFS_IOC_POOL_IMPORT
861  */
862 #define	ZFS_IMPORT_NORMAL	0x0
863 #define	ZFS_IMPORT_VERBATIM	0x1
864 #define	ZFS_IMPORT_ANY_HOST	0x2
865 #define	ZFS_IMPORT_MISSING_LOG	0x4
866 #define	ZFS_IMPORT_ONLY		0x8
867 
868 /*
869  * Sysevent payload members.  ZFS will generate the following sysevents with the
870  * given payloads:
871  *
872  *	ESC_ZFS_RESILVER_START
873  *	ESC_ZFS_RESILVER_END
874  *	ESC_ZFS_POOL_DESTROY
875  *	ESC_ZFS_POOL_REGUID
876  *
877  *		ZFS_EV_POOL_NAME	DATA_TYPE_STRING
878  *		ZFS_EV_POOL_GUID	DATA_TYPE_UINT64
879  *
880  *	ESC_ZFS_VDEV_REMOVE
881  *	ESC_ZFS_VDEV_CLEAR
882  *	ESC_ZFS_VDEV_CHECK
883  *
884  *		ZFS_EV_POOL_NAME	DATA_TYPE_STRING
885  *		ZFS_EV_POOL_GUID	DATA_TYPE_UINT64
886  *		ZFS_EV_VDEV_PATH	DATA_TYPE_STRING	(optional)
887  *		ZFS_EV_VDEV_GUID	DATA_TYPE_UINT64
888  */
889 #define	ZFS_EV_POOL_NAME	"pool_name"
890 #define	ZFS_EV_POOL_GUID	"pool_guid"
891 #define	ZFS_EV_VDEV_PATH	"vdev_path"
892 #define	ZFS_EV_VDEV_GUID	"vdev_guid"
893 
894 /*
895  * Note: This is encoded on-disk, so new events must be added to the
896  * end, and unused events can not be removed.  Be sure to edit
897  * libzfs_pool.c: hist_event_table[].
898  */
899 typedef enum history_internal_events {
900 	LOG_NO_EVENT = 0,
901 	LOG_POOL_CREATE,
902 	LOG_POOL_VDEV_ADD,
903 	LOG_POOL_REMOVE,
904 	LOG_POOL_DESTROY,
905 	LOG_POOL_EXPORT,
906 	LOG_POOL_IMPORT,
907 	LOG_POOL_VDEV_ATTACH,
908 	LOG_POOL_VDEV_REPLACE,
909 	LOG_POOL_VDEV_DETACH,
910 	LOG_POOL_VDEV_ONLINE,
911 	LOG_POOL_VDEV_OFFLINE,
912 	LOG_POOL_UPGRADE,
913 	LOG_POOL_CLEAR,
914 	LOG_POOL_SCAN,
915 	LOG_POOL_PROPSET,
916 	LOG_DS_CREATE,
917 	LOG_DS_CLONE,
918 	LOG_DS_DESTROY,
919 	LOG_DS_DESTROY_BEGIN,
920 	LOG_DS_INHERIT,
921 	LOG_DS_PROPSET,
922 	LOG_DS_QUOTA,
923 	LOG_DS_PERM_UPDATE,
924 	LOG_DS_PERM_REMOVE,
925 	LOG_DS_PERM_WHO_REMOVE,
926 	LOG_DS_PROMOTE,
927 	LOG_DS_RECEIVE,
928 	LOG_DS_RENAME,
929 	LOG_DS_RESERVATION,
930 	LOG_DS_REPLAY_INC_SYNC,
931 	LOG_DS_REPLAY_FULL_SYNC,
932 	LOG_DS_ROLLBACK,
933 	LOG_DS_SNAPSHOT,
934 	LOG_DS_UPGRADE,
935 	LOG_DS_REFQUOTA,
936 	LOG_DS_REFRESERV,
937 	LOG_POOL_SCAN_DONE,
938 	LOG_DS_USER_HOLD,
939 	LOG_DS_USER_RELEASE,
940 	LOG_POOL_SPLIT,
941 	LOG_END
942 } history_internal_events_t;
943 
944 #ifdef	__cplusplus
945 }
946 #endif
947 
948 #endif	/* _SYS_FS_ZFS_H */
949