xref: /titanic_44/usr/src/uts/common/sys/fs/zfs.h (revision 5cb0d67909d9970a3e7adbea9422ca3fc88000bf)
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) 2011, 2014 by Delphix. All rights reserved.
25  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
26  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
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	= (1 << 0),
50 	ZFS_TYPE_SNAPSHOT	= (1 << 1),
51 	ZFS_TYPE_VOLUME		= (1 << 2),
52 	ZFS_TYPE_POOL		= (1 << 3),
53 	ZFS_TYPE_BOOKMARK	= (1 << 4)
54 } zfs_type_t;
55 
56 typedef enum dmu_objset_type {
57 	DMU_OST_NONE,
58 	DMU_OST_META,
59 	DMU_OST_ZFS,
60 	DMU_OST_ZVOL,
61 	DMU_OST_OTHER,			/* For testing only! */
62 	DMU_OST_ANY,			/* Be careful! */
63 	DMU_OST_NUMTYPES
64 } dmu_objset_type_t;
65 
66 #define	ZFS_TYPE_DATASET	\
67 	(ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT)
68 
69 #define	ZAP_MAXNAMELEN 256
70 #define	ZAP_MAXVALUELEN (1024 * 8)
71 #define	ZAP_OLDMAXVALUELEN 1024
72 
73 /*
74  * Dataset properties are identified by these constants and must be added to
75  * the end of this list to ensure that external consumers are not affected
76  * by the change. If you make any changes to this list, be sure to update
77  * the property table in usr/src/common/zfs/zfs_prop.c.
78  */
79 typedef enum {
80 	ZFS_PROP_TYPE,
81 	ZFS_PROP_CREATION,
82 	ZFS_PROP_USED,
83 	ZFS_PROP_AVAILABLE,
84 	ZFS_PROP_REFERENCED,
85 	ZFS_PROP_COMPRESSRATIO,
86 	ZFS_PROP_MOUNTED,
87 	ZFS_PROP_ORIGIN,
88 	ZFS_PROP_QUOTA,
89 	ZFS_PROP_RESERVATION,
90 	ZFS_PROP_VOLSIZE,
91 	ZFS_PROP_VOLBLOCKSIZE,
92 	ZFS_PROP_RECORDSIZE,
93 	ZFS_PROP_MOUNTPOINT,
94 	ZFS_PROP_SHARENFS,
95 	ZFS_PROP_CHECKSUM,
96 	ZFS_PROP_COMPRESSION,
97 	ZFS_PROP_ATIME,
98 	ZFS_PROP_DEVICES,
99 	ZFS_PROP_EXEC,
100 	ZFS_PROP_SETUID,
101 	ZFS_PROP_READONLY,
102 	ZFS_PROP_ZONED,
103 	ZFS_PROP_SNAPDIR,
104 	ZFS_PROP_ACLMODE,
105 	ZFS_PROP_ACLINHERIT,
106 	ZFS_PROP_CREATETXG,		/* not exposed to the user */
107 	ZFS_PROP_NAME,			/* not exposed to the user */
108 	ZFS_PROP_CANMOUNT,
109 	ZFS_PROP_ISCSIOPTIONS,		/* not exposed to the user */
110 	ZFS_PROP_XATTR,
111 	ZFS_PROP_NUMCLONES,		/* not exposed to the user */
112 	ZFS_PROP_COPIES,
113 	ZFS_PROP_VERSION,
114 	ZFS_PROP_UTF8ONLY,
115 	ZFS_PROP_NORMALIZE,
116 	ZFS_PROP_CASE,
117 	ZFS_PROP_VSCAN,
118 	ZFS_PROP_NBMAND,
119 	ZFS_PROP_SHARESMB,
120 	ZFS_PROP_REFQUOTA,
121 	ZFS_PROP_REFRESERVATION,
122 	ZFS_PROP_GUID,
123 	ZFS_PROP_PRIMARYCACHE,
124 	ZFS_PROP_SECONDARYCACHE,
125 	ZFS_PROP_USEDSNAP,
126 	ZFS_PROP_USEDDS,
127 	ZFS_PROP_USEDCHILD,
128 	ZFS_PROP_USEDREFRESERV,
129 	ZFS_PROP_USERACCOUNTING,	/* not exposed to the user */
130 	ZFS_PROP_STMF_SHAREINFO,	/* not exposed to the user */
131 	ZFS_PROP_DEFER_DESTROY,
132 	ZFS_PROP_USERREFS,
133 	ZFS_PROP_LOGBIAS,
134 	ZFS_PROP_UNIQUE,		/* not exposed to the user */
135 	ZFS_PROP_OBJSETID,		/* not exposed to the user */
136 	ZFS_PROP_DEDUP,
137 	ZFS_PROP_MLSLABEL,
138 	ZFS_PROP_SYNC,
139 	ZFS_PROP_REFRATIO,
140 	ZFS_PROP_WRITTEN,
141 	ZFS_PROP_CLONES,
142 	ZFS_PROP_LOGICALUSED,
143 	ZFS_PROP_LOGICALREFERENCED,
144 	ZFS_PROP_INCONSISTENT,		/* not exposed to the user */
145 	ZFS_PROP_FILESYSTEM_LIMIT,
146 	ZFS_PROP_SNAPSHOT_LIMIT,
147 	ZFS_PROP_FILESYSTEM_COUNT,
148 	ZFS_PROP_SNAPSHOT_COUNT,
149 	ZFS_PROP_REDUNDANT_METADATA,
150 	ZFS_PROP_PREV_SNAP,
151 	ZFS_NUM_PROPS
152 } zfs_prop_t;
153 
154 typedef enum {
155 	ZFS_PROP_USERUSED,
156 	ZFS_PROP_USERQUOTA,
157 	ZFS_PROP_GROUPUSED,
158 	ZFS_PROP_GROUPQUOTA,
159 	ZFS_NUM_USERQUOTA_PROPS
160 } zfs_userquota_prop_t;
161 
162 extern const char *zfs_userquota_prop_prefixes[ZFS_NUM_USERQUOTA_PROPS];
163 
164 /*
165  * Pool properties are identified by these constants and must be added to the
166  * end of this list to ensure that external consumers are not affected
167  * by the change. If you make any changes to this list, be sure to update
168  * the property table in usr/src/common/zfs/zpool_prop.c.
169  */
170 typedef enum {
171 	ZPOOL_PROP_NAME,
172 	ZPOOL_PROP_SIZE,
173 	ZPOOL_PROP_CAPACITY,
174 	ZPOOL_PROP_ALTROOT,
175 	ZPOOL_PROP_HEALTH,
176 	ZPOOL_PROP_GUID,
177 	ZPOOL_PROP_VERSION,
178 	ZPOOL_PROP_BOOTFS,
179 	ZPOOL_PROP_DELEGATION,
180 	ZPOOL_PROP_AUTOREPLACE,
181 	ZPOOL_PROP_CACHEFILE,
182 	ZPOOL_PROP_FAILUREMODE,
183 	ZPOOL_PROP_LISTSNAPS,
184 	ZPOOL_PROP_AUTOEXPAND,
185 	ZPOOL_PROP_DEDUPDITTO,
186 	ZPOOL_PROP_DEDUPRATIO,
187 	ZPOOL_PROP_FREE,
188 	ZPOOL_PROP_ALLOCATED,
189 	ZPOOL_PROP_READONLY,
190 	ZPOOL_PROP_COMMENT,
191 	ZPOOL_PROP_EXPANDSZ,
192 	ZPOOL_PROP_FREEING,
193 	ZPOOL_PROP_LEAKED,
194 	ZPOOL_NUM_PROPS
195 } zpool_prop_t;
196 
197 /* Small enough to not hog a whole line of printout in zpool(1M). */
198 #define	ZPROP_MAX_COMMENT	32
199 
200 #define	ZPROP_CONT		-2
201 #define	ZPROP_INVAL		-1
202 
203 #define	ZPROP_VALUE		"value"
204 #define	ZPROP_SOURCE		"source"
205 
206 typedef enum {
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
213 } zprop_source_t;
214 
215 #define	ZPROP_SRC_ALL	0x3f
216 
217 #define	ZPROP_SOURCE_VAL_RECVD	"$recvd"
218 #define	ZPROP_N_MORE_ERRORS	"N_MORE_ERRORS"
219 /*
220  * Dataset flag implemented as a special entry in the props zap object
221  * indicating that the dataset has received properties on or after
222  * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties
223  * just as it did in earlier versions, and thereafter, local properties are
224  * preserved.
225  */
226 #define	ZPROP_HAS_RECVD		"$hasrecvd"
227 
228 typedef enum {
229 	ZPROP_ERR_NOCLEAR = 0x1, /* failure to clear existing props */
230 	ZPROP_ERR_NORESTORE = 0x2 /* failure to restore props on error */
231 } zprop_errflags_t;
232 
233 typedef int (*zprop_func)(int, void *);
234 
235 /*
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.
239  */
240 #define	ZPOOL_ROOTFS_PROPS	"root-props-nvl"
241 
242 /*
243  * Dataset property functions shared between libzfs and kernel.
244  */
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 boolean_t zfs_prop_written(const char *);
255 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);
256 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *);
257 uint64_t zfs_prop_random_value(zfs_prop_t, uint64_t seed);
258 boolean_t zfs_prop_valid_for_type(int, zfs_type_t);
259 
260 /*
261  * Pool property functions shared between libzfs and kernel.
262  */
263 zpool_prop_t zpool_name_to_prop(const char *);
264 const char *zpool_prop_to_name(zpool_prop_t);
265 const char *zpool_prop_default_string(zpool_prop_t);
266 uint64_t zpool_prop_default_numeric(zpool_prop_t);
267 boolean_t zpool_prop_readonly(zpool_prop_t);
268 boolean_t zpool_prop_feature(const char *);
269 boolean_t zpool_prop_unsupported(const char *name);
270 int zpool_prop_index_to_string(zpool_prop_t, uint64_t, const char **);
271 int zpool_prop_string_to_index(zpool_prop_t, const char *, uint64_t *);
272 uint64_t zpool_prop_random_value(zpool_prop_t, uint64_t seed);
273 
274 /*
275  * Definitions for the Delegation.
276  */
277 typedef enum {
278 	ZFS_DELEG_WHO_UNKNOWN = 0,
279 	ZFS_DELEG_USER = 'u',
280 	ZFS_DELEG_USER_SETS = 'U',
281 	ZFS_DELEG_GROUP = 'g',
282 	ZFS_DELEG_GROUP_SETS = 'G',
283 	ZFS_DELEG_EVERYONE = 'e',
284 	ZFS_DELEG_EVERYONE_SETS = 'E',
285 	ZFS_DELEG_CREATE = 'c',
286 	ZFS_DELEG_CREATE_SETS = 'C',
287 	ZFS_DELEG_NAMED_SET = 's',
288 	ZFS_DELEG_NAMED_SET_SETS = 'S'
289 } zfs_deleg_who_type_t;
290 
291 typedef enum {
292 	ZFS_DELEG_NONE = 0,
293 	ZFS_DELEG_PERM_LOCAL = 1,
294 	ZFS_DELEG_PERM_DESCENDENT = 2,
295 	ZFS_DELEG_PERM_LOCALDESCENDENT = 3,
296 	ZFS_DELEG_PERM_CREATE = 4
297 } zfs_deleg_inherit_t;
298 
299 #define	ZFS_DELEG_PERM_UID	"uid"
300 #define	ZFS_DELEG_PERM_GID	"gid"
301 #define	ZFS_DELEG_PERM_GROUPS	"groups"
302 
303 #define	ZFS_MLSLABEL_DEFAULT	"none"
304 
305 #define	ZFS_SMB_ACL_SRC		"src"
306 #define	ZFS_SMB_ACL_TARGET	"target"
307 
308 typedef enum {
309 	ZFS_CANMOUNT_OFF = 0,
310 	ZFS_CANMOUNT_ON = 1,
311 	ZFS_CANMOUNT_NOAUTO = 2
312 } zfs_canmount_type_t;
313 
314 typedef enum {
315 	ZFS_LOGBIAS_LATENCY = 0,
316 	ZFS_LOGBIAS_THROUGHPUT = 1
317 } zfs_logbias_op_t;
318 
319 typedef enum zfs_share_op {
320 	ZFS_SHARE_NFS = 0,
321 	ZFS_UNSHARE_NFS = 1,
322 	ZFS_SHARE_SMB = 2,
323 	ZFS_UNSHARE_SMB = 3
324 } zfs_share_op_t;
325 
326 typedef enum zfs_smb_acl_op {
327 	ZFS_SMB_ACL_ADD,
328 	ZFS_SMB_ACL_REMOVE,
329 	ZFS_SMB_ACL_RENAME,
330 	ZFS_SMB_ACL_PURGE
331 } zfs_smb_acl_op_t;
332 
333 typedef enum zfs_cache_type {
334 	ZFS_CACHE_NONE = 0,
335 	ZFS_CACHE_METADATA = 1,
336 	ZFS_CACHE_ALL = 2
337 } zfs_cache_type_t;
338 
339 typedef enum {
340 	ZFS_SYNC_STANDARD = 0,
341 	ZFS_SYNC_ALWAYS = 1,
342 	ZFS_SYNC_DISABLED = 2
343 } zfs_sync_type_t;
344 
345 typedef enum {
346 	ZFS_REDUNDANT_METADATA_ALL,
347 	ZFS_REDUNDANT_METADATA_MOST
348 } zfs_redundant_metadata_type_t;
349 
350 /*
351  * On-disk version number.
352  */
353 #define	SPA_VERSION_1			1ULL
354 #define	SPA_VERSION_2			2ULL
355 #define	SPA_VERSION_3			3ULL
356 #define	SPA_VERSION_4			4ULL
357 #define	SPA_VERSION_5			5ULL
358 #define	SPA_VERSION_6			6ULL
359 #define	SPA_VERSION_7			7ULL
360 #define	SPA_VERSION_8			8ULL
361 #define	SPA_VERSION_9			9ULL
362 #define	SPA_VERSION_10			10ULL
363 #define	SPA_VERSION_11			11ULL
364 #define	SPA_VERSION_12			12ULL
365 #define	SPA_VERSION_13			13ULL
366 #define	SPA_VERSION_14			14ULL
367 #define	SPA_VERSION_15			15ULL
368 #define	SPA_VERSION_16			16ULL
369 #define	SPA_VERSION_17			17ULL
370 #define	SPA_VERSION_18			18ULL
371 #define	SPA_VERSION_19			19ULL
372 #define	SPA_VERSION_20			20ULL
373 #define	SPA_VERSION_21			21ULL
374 #define	SPA_VERSION_22			22ULL
375 #define	SPA_VERSION_23			23ULL
376 #define	SPA_VERSION_24			24ULL
377 #define	SPA_VERSION_25			25ULL
378 #define	SPA_VERSION_26			26ULL
379 #define	SPA_VERSION_27			27ULL
380 #define	SPA_VERSION_28			28ULL
381 #define	SPA_VERSION_5000		5000ULL
382 
383 /*
384  * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk
385  * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*},
386  * and do the appropriate changes.  Also bump the version number in
387  * usr/src/grub/capability.
388  */
389 #define	SPA_VERSION			SPA_VERSION_5000
390 #define	SPA_VERSION_STRING		"5000"
391 
392 /*
393  * Symbolic names for the changes that caused a SPA_VERSION switch.
394  * Used in the code when checking for presence or absence of a feature.
395  * Feel free to define multiple symbolic names for each version if there
396  * were multiple changes to on-disk structures during that version.
397  *
398  * NOTE: When checking the current SPA_VERSION in your code, be sure
399  *       to use spa_version() since it reports the version of the
400  *       last synced uberblock.  Checking the in-flight version can
401  *       be dangerous in some cases.
402  */
403 #define	SPA_VERSION_INITIAL		SPA_VERSION_1
404 #define	SPA_VERSION_DITTO_BLOCKS	SPA_VERSION_2
405 #define	SPA_VERSION_SPARES		SPA_VERSION_3
406 #define	SPA_VERSION_RAIDZ2		SPA_VERSION_3
407 #define	SPA_VERSION_BPOBJ_ACCOUNT	SPA_VERSION_3
408 #define	SPA_VERSION_RAIDZ_DEFLATE	SPA_VERSION_3
409 #define	SPA_VERSION_DNODE_BYTES		SPA_VERSION_3
410 #define	SPA_VERSION_ZPOOL_HISTORY	SPA_VERSION_4
411 #define	SPA_VERSION_GZIP_COMPRESSION	SPA_VERSION_5
412 #define	SPA_VERSION_BOOTFS		SPA_VERSION_6
413 #define	SPA_VERSION_SLOGS		SPA_VERSION_7
414 #define	SPA_VERSION_DELEGATED_PERMS	SPA_VERSION_8
415 #define	SPA_VERSION_FUID		SPA_VERSION_9
416 #define	SPA_VERSION_REFRESERVATION	SPA_VERSION_9
417 #define	SPA_VERSION_REFQUOTA		SPA_VERSION_9
418 #define	SPA_VERSION_UNIQUE_ACCURATE	SPA_VERSION_9
419 #define	SPA_VERSION_L2CACHE		SPA_VERSION_10
420 #define	SPA_VERSION_NEXT_CLONES		SPA_VERSION_11
421 #define	SPA_VERSION_ORIGIN		SPA_VERSION_11
422 #define	SPA_VERSION_DSL_SCRUB		SPA_VERSION_11
423 #define	SPA_VERSION_SNAP_PROPS		SPA_VERSION_12
424 #define	SPA_VERSION_USED_BREAKDOWN	SPA_VERSION_13
425 #define	SPA_VERSION_PASSTHROUGH_X	SPA_VERSION_14
426 #define	SPA_VERSION_USERSPACE		SPA_VERSION_15
427 #define	SPA_VERSION_STMF_PROP		SPA_VERSION_16
428 #define	SPA_VERSION_RAIDZ3		SPA_VERSION_17
429 #define	SPA_VERSION_USERREFS		SPA_VERSION_18
430 #define	SPA_VERSION_HOLES		SPA_VERSION_19
431 #define	SPA_VERSION_ZLE_COMPRESSION	SPA_VERSION_20
432 #define	SPA_VERSION_DEDUP		SPA_VERSION_21
433 #define	SPA_VERSION_RECVD_PROPS		SPA_VERSION_22
434 #define	SPA_VERSION_SLIM_ZIL		SPA_VERSION_23
435 #define	SPA_VERSION_SA			SPA_VERSION_24
436 #define	SPA_VERSION_SCAN		SPA_VERSION_25
437 #define	SPA_VERSION_DIR_CLONES		SPA_VERSION_26
438 #define	SPA_VERSION_DEADLISTS		SPA_VERSION_26
439 #define	SPA_VERSION_FAST_SNAP		SPA_VERSION_27
440 #define	SPA_VERSION_MULTI_REPLACE	SPA_VERSION_28
441 #define	SPA_VERSION_BEFORE_FEATURES	SPA_VERSION_28
442 #define	SPA_VERSION_FEATURES		SPA_VERSION_5000
443 
444 #define	SPA_VERSION_IS_SUPPORTED(v) \
445 	(((v) >= SPA_VERSION_INITIAL && (v) <= SPA_VERSION_BEFORE_FEATURES) || \
446 	((v) >= SPA_VERSION_FEATURES && (v) <= SPA_VERSION))
447 
448 /*
449  * ZPL version - rev'd whenever an incompatible on-disk format change
450  * occurs.  This is independent of SPA/DMU/ZAP versioning.  You must
451  * also update the version_table[] and help message in zfs_prop.c.
452  *
453  * When changing, be sure to teach GRUB how to read the new format!
454  * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*}
455  */
456 #define	ZPL_VERSION_1			1ULL
457 #define	ZPL_VERSION_2			2ULL
458 #define	ZPL_VERSION_3			3ULL
459 #define	ZPL_VERSION_4			4ULL
460 #define	ZPL_VERSION_5			5ULL
461 #define	ZPL_VERSION			ZPL_VERSION_5
462 #define	ZPL_VERSION_STRING		"5"
463 
464 #define	ZPL_VERSION_INITIAL		ZPL_VERSION_1
465 #define	ZPL_VERSION_DIRENT_TYPE		ZPL_VERSION_2
466 #define	ZPL_VERSION_FUID		ZPL_VERSION_3
467 #define	ZPL_VERSION_NORMALIZATION	ZPL_VERSION_3
468 #define	ZPL_VERSION_SYSATTR		ZPL_VERSION_3
469 #define	ZPL_VERSION_USERSPACE		ZPL_VERSION_4
470 #define	ZPL_VERSION_SA			ZPL_VERSION_5
471 
472 /* Rewind request information */
473 #define	ZPOOL_NO_REWIND		1  /* No policy - default behavior */
474 #define	ZPOOL_NEVER_REWIND	2  /* Do not search for best txg or rewind */
475 #define	ZPOOL_TRY_REWIND	4  /* Search for best txg, but do not rewind */
476 #define	ZPOOL_DO_REWIND		8  /* Rewind to best txg w/in deferred frees */
477 #define	ZPOOL_EXTREME_REWIND	16 /* Allow extreme measures to find best txg */
478 #define	ZPOOL_REWIND_MASK	28 /* All the possible rewind bits */
479 #define	ZPOOL_REWIND_POLICIES	31 /* All the possible policy bits */
480 
481 typedef struct zpool_rewind_policy {
482 	uint32_t	zrp_request;	/* rewind behavior requested */
483 	uint64_t	zrp_maxmeta;	/* max acceptable meta-data errors */
484 	uint64_t	zrp_maxdata;	/* max acceptable data errors */
485 	uint64_t	zrp_txg;	/* specific txg to load */
486 } zpool_rewind_policy_t;
487 
488 /*
489  * The following are configuration names used in the nvlist describing a pool's
490  * configuration.
491  */
492 #define	ZPOOL_CONFIG_VERSION		"version"
493 #define	ZPOOL_CONFIG_POOL_NAME		"name"
494 #define	ZPOOL_CONFIG_POOL_STATE		"state"
495 #define	ZPOOL_CONFIG_POOL_TXG		"txg"
496 #define	ZPOOL_CONFIG_POOL_GUID		"pool_guid"
497 #define	ZPOOL_CONFIG_CREATE_TXG		"create_txg"
498 #define	ZPOOL_CONFIG_TOP_GUID		"top_guid"
499 #define	ZPOOL_CONFIG_VDEV_TREE		"vdev_tree"
500 #define	ZPOOL_CONFIG_TYPE		"type"
501 #define	ZPOOL_CONFIG_CHILDREN		"children"
502 #define	ZPOOL_CONFIG_ID			"id"
503 #define	ZPOOL_CONFIG_GUID		"guid"
504 #define	ZPOOL_CONFIG_PATH		"path"
505 #define	ZPOOL_CONFIG_DEVID		"devid"
506 #define	ZPOOL_CONFIG_METASLAB_ARRAY	"metaslab_array"
507 #define	ZPOOL_CONFIG_METASLAB_SHIFT	"metaslab_shift"
508 #define	ZPOOL_CONFIG_ASHIFT		"ashift"
509 #define	ZPOOL_CONFIG_ASIZE		"asize"
510 #define	ZPOOL_CONFIG_DTL		"DTL"
511 #define	ZPOOL_CONFIG_SCAN_STATS		"scan_stats"	/* not stored on disk */
512 #define	ZPOOL_CONFIG_VDEV_STATS		"vdev_stats"	/* not stored on disk */
513 #define	ZPOOL_CONFIG_WHOLE_DISK		"whole_disk"
514 #define	ZPOOL_CONFIG_ERRCOUNT		"error_count"
515 #define	ZPOOL_CONFIG_NOT_PRESENT	"not_present"
516 #define	ZPOOL_CONFIG_SPARES		"spares"
517 #define	ZPOOL_CONFIG_IS_SPARE		"is_spare"
518 #define	ZPOOL_CONFIG_NPARITY		"nparity"
519 #define	ZPOOL_CONFIG_HOSTID		"hostid"
520 #define	ZPOOL_CONFIG_HOSTNAME		"hostname"
521 #define	ZPOOL_CONFIG_LOADED_TIME	"initial_load_time"
522 #define	ZPOOL_CONFIG_UNSPARE		"unspare"
523 #define	ZPOOL_CONFIG_PHYS_PATH		"phys_path"
524 #define	ZPOOL_CONFIG_IS_LOG		"is_log"
525 #define	ZPOOL_CONFIG_L2CACHE		"l2cache"
526 #define	ZPOOL_CONFIG_HOLE_ARRAY		"hole_array"
527 #define	ZPOOL_CONFIG_VDEV_CHILDREN	"vdev_children"
528 #define	ZPOOL_CONFIG_IS_HOLE		"is_hole"
529 #define	ZPOOL_CONFIG_DDT_HISTOGRAM	"ddt_histogram"
530 #define	ZPOOL_CONFIG_DDT_OBJ_STATS	"ddt_object_stats"
531 #define	ZPOOL_CONFIG_DDT_STATS		"ddt_stats"
532 #define	ZPOOL_CONFIG_SPLIT		"splitcfg"
533 #define	ZPOOL_CONFIG_ORIG_GUID		"orig_guid"
534 #define	ZPOOL_CONFIG_SPLIT_GUID		"split_guid"
535 #define	ZPOOL_CONFIG_SPLIT_LIST		"guid_list"
536 #define	ZPOOL_CONFIG_REMOVING		"removing"
537 #define	ZPOOL_CONFIG_RESILVER_TXG	"resilver_txg"
538 #define	ZPOOL_CONFIG_COMMENT		"comment"
539 #define	ZPOOL_CONFIG_SUSPENDED		"suspended"	/* not stored on disk */
540 #define	ZPOOL_CONFIG_TIMESTAMP		"timestamp"	/* not stored on disk */
541 #define	ZPOOL_CONFIG_BOOTFS		"bootfs"	/* not stored on disk */
542 #define	ZPOOL_CONFIG_MISSING_DEVICES	"missing_vdevs"	/* not stored on disk */
543 #define	ZPOOL_CONFIG_LOAD_INFO		"load_info"	/* not stored on disk */
544 #define	ZPOOL_CONFIG_REWIND_INFO	"rewind_info"	/* not stored on disk */
545 #define	ZPOOL_CONFIG_UNSUP_FEAT		"unsup_feat"	/* not stored on disk */
546 #define	ZPOOL_CONFIG_ENABLED_FEAT	"enabled_feat"	/* not stored on disk */
547 #define	ZPOOL_CONFIG_CAN_RDONLY		"can_rdonly"	/* not stored on disk */
548 #define	ZPOOL_CONFIG_FEATURES_FOR_READ	"features_for_read"
549 #define	ZPOOL_CONFIG_FEATURE_STATS	"feature_stats"	/* not stored on disk */
550 /*
551  * The persistent vdev state is stored as separate values rather than a single
552  * 'vdev_state' entry.  This is because a device can be in multiple states, such
553  * as offline and degraded.
554  */
555 #define	ZPOOL_CONFIG_OFFLINE		"offline"
556 #define	ZPOOL_CONFIG_FAULTED		"faulted"
557 #define	ZPOOL_CONFIG_DEGRADED		"degraded"
558 #define	ZPOOL_CONFIG_REMOVED		"removed"
559 #define	ZPOOL_CONFIG_FRU		"fru"
560 #define	ZPOOL_CONFIG_AUX_STATE		"aux_state"
561 
562 /* Rewind policy parameters */
563 #define	ZPOOL_REWIND_POLICY		"rewind-policy"
564 #define	ZPOOL_REWIND_REQUEST		"rewind-request"
565 #define	ZPOOL_REWIND_REQUEST_TXG	"rewind-request-txg"
566 #define	ZPOOL_REWIND_META_THRESH	"rewind-meta-thresh"
567 #define	ZPOOL_REWIND_DATA_THRESH	"rewind-data-thresh"
568 
569 /* Rewind data discovered */
570 #define	ZPOOL_CONFIG_LOAD_TIME		"rewind_txg_ts"
571 #define	ZPOOL_CONFIG_LOAD_DATA_ERRORS	"verify_data_errors"
572 #define	ZPOOL_CONFIG_REWIND_TIME	"seconds_of_rewind"
573 
574 #define	VDEV_TYPE_ROOT			"root"
575 #define	VDEV_TYPE_MIRROR		"mirror"
576 #define	VDEV_TYPE_REPLACING		"replacing"
577 #define	VDEV_TYPE_RAIDZ			"raidz"
578 #define	VDEV_TYPE_DISK			"disk"
579 #define	VDEV_TYPE_FILE			"file"
580 #define	VDEV_TYPE_MISSING		"missing"
581 #define	VDEV_TYPE_HOLE			"hole"
582 #define	VDEV_TYPE_SPARE			"spare"
583 #define	VDEV_TYPE_LOG			"log"
584 #define	VDEV_TYPE_L2CACHE		"l2cache"
585 
586 /*
587  * This is needed in userland to report the minimum necessary device size.
588  */
589 #define	SPA_MINDEVSIZE		(64ULL << 20)
590 
591 /*
592  * The location of the pool configuration repository, shared between kernel and
593  * userland.
594  */
595 #define	ZPOOL_CACHE		"/etc/zfs/zpool.cache"
596 
597 /*
598  * vdev states are ordered from least to most healthy.
599  * A vdev that's CANT_OPEN or below is considered unusable.
600  */
601 typedef enum vdev_state {
602 	VDEV_STATE_UNKNOWN = 0,	/* Uninitialized vdev			*/
603 	VDEV_STATE_CLOSED,	/* Not currently open			*/
604 	VDEV_STATE_OFFLINE,	/* Not allowed to open			*/
605 	VDEV_STATE_REMOVED,	/* Explicitly removed from system	*/
606 	VDEV_STATE_CANT_OPEN,	/* Tried to open, but failed		*/
607 	VDEV_STATE_FAULTED,	/* External request to fault device	*/
608 	VDEV_STATE_DEGRADED,	/* Replicated vdev with unhealthy kids	*/
609 	VDEV_STATE_HEALTHY	/* Presumed good			*/
610 } vdev_state_t;
611 
612 #define	VDEV_STATE_ONLINE	VDEV_STATE_HEALTHY
613 
614 /*
615  * vdev aux states.  When a vdev is in the CANT_OPEN state, the aux field
616  * of the vdev stats structure uses these constants to distinguish why.
617  */
618 typedef enum vdev_aux {
619 	VDEV_AUX_NONE,		/* no error				*/
620 	VDEV_AUX_OPEN_FAILED,	/* ldi_open_*() or vn_open() failed	*/
621 	VDEV_AUX_CORRUPT_DATA,	/* bad label or disk contents		*/
622 	VDEV_AUX_NO_REPLICAS,	/* insufficient number of replicas	*/
623 	VDEV_AUX_BAD_GUID_SUM,	/* vdev guid sum doesn't match		*/
624 	VDEV_AUX_TOO_SMALL,	/* vdev size is too small		*/
625 	VDEV_AUX_BAD_LABEL,	/* the label is OK but invalid		*/
626 	VDEV_AUX_VERSION_NEWER,	/* on-disk version is too new		*/
627 	VDEV_AUX_VERSION_OLDER,	/* on-disk version is too old		*/
628 	VDEV_AUX_UNSUP_FEAT,	/* unsupported features			*/
629 	VDEV_AUX_SPARED,	/* hot spare used in another pool	*/
630 	VDEV_AUX_ERR_EXCEEDED,	/* too many errors			*/
631 	VDEV_AUX_IO_FAILURE,	/* experienced I/O failure		*/
632 	VDEV_AUX_BAD_LOG,	/* cannot read log chain(s)		*/
633 	VDEV_AUX_EXTERNAL,	/* external diagnosis			*/
634 	VDEV_AUX_SPLIT_POOL	/* vdev was split off into another pool	*/
635 } vdev_aux_t;
636 
637 /*
638  * pool state.  The following states are written to disk as part of the normal
639  * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE.  The remaining
640  * states are software abstractions used at various levels to communicate
641  * pool state.
642  */
643 typedef enum pool_state {
644 	POOL_STATE_ACTIVE = 0,		/* In active use		*/
645 	POOL_STATE_EXPORTED,		/* Explicitly exported		*/
646 	POOL_STATE_DESTROYED,		/* Explicitly destroyed		*/
647 	POOL_STATE_SPARE,		/* Reserved for hot spare use	*/
648 	POOL_STATE_L2CACHE,		/* Level 2 ARC device		*/
649 	POOL_STATE_UNINITIALIZED,	/* Internal spa_t state		*/
650 	POOL_STATE_UNAVAIL,		/* Internal libzfs state	*/
651 	POOL_STATE_POTENTIALLY_ACTIVE	/* Internal libzfs state	*/
652 } pool_state_t;
653 
654 /*
655  * Scan Functions.
656  */
657 typedef enum pool_scan_func {
658 	POOL_SCAN_NONE,
659 	POOL_SCAN_SCRUB,
660 	POOL_SCAN_RESILVER,
661 	POOL_SCAN_FUNCS
662 } pool_scan_func_t;
663 
664 /*
665  * ZIO types.  Needed to interpret vdev statistics below.
666  */
667 typedef enum zio_type {
668 	ZIO_TYPE_NULL = 0,
669 	ZIO_TYPE_READ,
670 	ZIO_TYPE_WRITE,
671 	ZIO_TYPE_FREE,
672 	ZIO_TYPE_CLAIM,
673 	ZIO_TYPE_IOCTL,
674 	ZIO_TYPES
675 } zio_type_t;
676 
677 /*
678  * Pool statistics.  Note: all fields should be 64-bit because this
679  * is passed between kernel and userland as an nvlist uint64 array.
680  */
681 typedef struct pool_scan_stat {
682 	/* values stored on disk */
683 	uint64_t	pss_func;	/* pool_scan_func_t */
684 	uint64_t	pss_state;	/* dsl_scan_state_t */
685 	uint64_t	pss_start_time;	/* scan start time */
686 	uint64_t	pss_end_time;	/* scan end time */
687 	uint64_t	pss_to_examine;	/* total bytes to scan */
688 	uint64_t	pss_examined;	/* total examined bytes	*/
689 	uint64_t	pss_to_process; /* total bytes to process */
690 	uint64_t	pss_processed;	/* total processed bytes */
691 	uint64_t	pss_errors;	/* scan errors	*/
692 
693 	/* values not stored on disk */
694 	uint64_t	pss_pass_exam;	/* examined bytes per scan pass */
695 	uint64_t	pss_pass_start;	/* start time of a scan pass */
696 } pool_scan_stat_t;
697 
698 typedef enum dsl_scan_state {
699 	DSS_NONE,
700 	DSS_SCANNING,
701 	DSS_FINISHED,
702 	DSS_CANCELED,
703 	DSS_NUM_STATES
704 } dsl_scan_state_t;
705 
706 
707 /*
708  * Vdev statistics.  Note: all fields should be 64-bit because this
709  * is passed between kernel and userland as an nvlist uint64 array.
710  */
711 typedef struct vdev_stat {
712 	hrtime_t	vs_timestamp;		/* time since vdev load	*/
713 	uint64_t	vs_state;		/* vdev state		*/
714 	uint64_t	vs_aux;			/* see vdev_aux_t	*/
715 	uint64_t	vs_alloc;		/* space allocated	*/
716 	uint64_t	vs_space;		/* total capacity	*/
717 	uint64_t	vs_dspace;		/* deflated capacity	*/
718 	uint64_t	vs_rsize;		/* replaceable dev size */
719 	uint64_t	vs_esize;		/* expandable dev size */
720 	uint64_t	vs_ops[ZIO_TYPES];	/* operation count	*/
721 	uint64_t	vs_bytes[ZIO_TYPES];	/* bytes read/written	*/
722 	uint64_t	vs_read_errors;		/* read errors		*/
723 	uint64_t	vs_write_errors;	/* write errors		*/
724 	uint64_t	vs_checksum_errors;	/* checksum errors	*/
725 	uint64_t	vs_self_healed;		/* self-healed bytes	*/
726 	uint64_t	vs_scan_removing;	/* removing?	*/
727 	uint64_t	vs_scan_processed;	/* scan processed bytes	*/
728 } vdev_stat_t;
729 
730 /*
731  * DDT statistics.  Note: all fields should be 64-bit because this
732  * is passed between kernel and userland as an nvlist uint64 array.
733  */
734 typedef struct ddt_object {
735 	uint64_t	ddo_count;	/* number of elments in ddt 	*/
736 	uint64_t	ddo_dspace;	/* size of ddt on disk		*/
737 	uint64_t	ddo_mspace;	/* size of ddt in-core		*/
738 } ddt_object_t;
739 
740 typedef struct ddt_stat {
741 	uint64_t	dds_blocks;	/* blocks			*/
742 	uint64_t	dds_lsize;	/* logical size			*/
743 	uint64_t	dds_psize;	/* physical size		*/
744 	uint64_t	dds_dsize;	/* deflated allocated size	*/
745 	uint64_t	dds_ref_blocks;	/* referenced blocks		*/
746 	uint64_t	dds_ref_lsize;	/* referenced lsize * refcnt	*/
747 	uint64_t	dds_ref_psize;	/* referenced psize * refcnt	*/
748 	uint64_t	dds_ref_dsize;	/* referenced dsize * refcnt	*/
749 } ddt_stat_t;
750 
751 typedef struct ddt_histogram {
752 	ddt_stat_t	ddh_stat[64];	/* power-of-two histogram buckets */
753 } ddt_histogram_t;
754 
755 #define	ZVOL_DRIVER	"zvol"
756 #define	ZFS_DRIVER	"zfs"
757 #define	ZFS_DEV		"/dev/zfs"
758 
759 /* general zvol path */
760 #define	ZVOL_DIR		"/dev/zvol"
761 /* expansion */
762 #define	ZVOL_PSEUDO_DEV		"/devices/pseudo/zfs@0:"
763 /* for dump and swap */
764 #define	ZVOL_FULL_DEV_DIR	ZVOL_DIR "/dsk/"
765 #define	ZVOL_FULL_RDEV_DIR	ZVOL_DIR "/rdsk/"
766 
767 #define	ZVOL_PROP_NAME		"name"
768 #define	ZVOL_DEFAULT_BLOCKSIZE	8192
769 
770 /*
771  * /dev/zfs ioctl numbers.
772  */
773 typedef enum zfs_ioc {
774 	ZFS_IOC_FIRST =	('Z' << 8),
775 	ZFS_IOC = ZFS_IOC_FIRST,
776 	ZFS_IOC_POOL_CREATE = ZFS_IOC_FIRST,
777 	ZFS_IOC_POOL_DESTROY,
778 	ZFS_IOC_POOL_IMPORT,
779 	ZFS_IOC_POOL_EXPORT,
780 	ZFS_IOC_POOL_CONFIGS,
781 	ZFS_IOC_POOL_STATS,
782 	ZFS_IOC_POOL_TRYIMPORT,
783 	ZFS_IOC_POOL_SCAN,
784 	ZFS_IOC_POOL_FREEZE,
785 	ZFS_IOC_POOL_UPGRADE,
786 	ZFS_IOC_POOL_GET_HISTORY,
787 	ZFS_IOC_VDEV_ADD,
788 	ZFS_IOC_VDEV_REMOVE,
789 	ZFS_IOC_VDEV_SET_STATE,
790 	ZFS_IOC_VDEV_ATTACH,
791 	ZFS_IOC_VDEV_DETACH,
792 	ZFS_IOC_VDEV_SETPATH,
793 	ZFS_IOC_VDEV_SETFRU,
794 	ZFS_IOC_OBJSET_STATS,
795 	ZFS_IOC_OBJSET_ZPLPROPS,
796 	ZFS_IOC_DATASET_LIST_NEXT,
797 	ZFS_IOC_SNAPSHOT_LIST_NEXT,
798 	ZFS_IOC_SET_PROP,
799 	ZFS_IOC_CREATE,
800 	ZFS_IOC_DESTROY,
801 	ZFS_IOC_ROLLBACK,
802 	ZFS_IOC_RENAME,
803 	ZFS_IOC_RECV,
804 	ZFS_IOC_SEND,
805 	ZFS_IOC_INJECT_FAULT,
806 	ZFS_IOC_CLEAR_FAULT,
807 	ZFS_IOC_INJECT_LIST_NEXT,
808 	ZFS_IOC_ERROR_LOG,
809 	ZFS_IOC_CLEAR,
810 	ZFS_IOC_PROMOTE,
811 	ZFS_IOC_SNAPSHOT,
812 	ZFS_IOC_DSOBJ_TO_DSNAME,
813 	ZFS_IOC_OBJ_TO_PATH,
814 	ZFS_IOC_POOL_SET_PROPS,
815 	ZFS_IOC_POOL_GET_PROPS,
816 	ZFS_IOC_SET_FSACL,
817 	ZFS_IOC_GET_FSACL,
818 	ZFS_IOC_SHARE,
819 	ZFS_IOC_INHERIT_PROP,
820 	ZFS_IOC_SMB_ACL,
821 	ZFS_IOC_USERSPACE_ONE,
822 	ZFS_IOC_USERSPACE_MANY,
823 	ZFS_IOC_USERSPACE_UPGRADE,
824 	ZFS_IOC_HOLD,
825 	ZFS_IOC_RELEASE,
826 	ZFS_IOC_GET_HOLDS,
827 	ZFS_IOC_OBJSET_RECVD_PROPS,
828 	ZFS_IOC_VDEV_SPLIT,
829 	ZFS_IOC_NEXT_OBJ,
830 	ZFS_IOC_DIFF,
831 	ZFS_IOC_TMP_SNAPSHOT,
832 	ZFS_IOC_OBJ_TO_STATS,
833 	ZFS_IOC_SPACE_WRITTEN,
834 	ZFS_IOC_SPACE_SNAPS,
835 	ZFS_IOC_DESTROY_SNAPS,
836 	ZFS_IOC_POOL_REGUID,
837 	ZFS_IOC_POOL_REOPEN,
838 	ZFS_IOC_SEND_PROGRESS,
839 	ZFS_IOC_LOG_HISTORY,
840 	ZFS_IOC_SEND_NEW,
841 	ZFS_IOC_SEND_SPACE,
842 	ZFS_IOC_CLONE,
843 	ZFS_IOC_BOOKMARK,
844 	ZFS_IOC_GET_BOOKMARKS,
845 	ZFS_IOC_DESTROY_BOOKMARKS,
846 	ZFS_IOC_LAST
847 } zfs_ioc_t;
848 
849 /*
850  * Internal SPA load state.  Used by FMA diagnosis engine.
851  */
852 typedef enum {
853 	SPA_LOAD_NONE,		/* no load in progress	*/
854 	SPA_LOAD_OPEN,		/* normal open		*/
855 	SPA_LOAD_IMPORT,	/* import in progress	*/
856 	SPA_LOAD_TRYIMPORT,	/* tryimport in progress */
857 	SPA_LOAD_RECOVER,	/* recovery requested	*/
858 	SPA_LOAD_ERROR		/* load failed		*/
859 } spa_load_state_t;
860 
861 /*
862  * Bookmark name values.
863  */
864 #define	ZPOOL_ERR_LIST		"error list"
865 #define	ZPOOL_ERR_DATASET	"dataset"
866 #define	ZPOOL_ERR_OBJECT	"object"
867 
868 #define	HIS_MAX_RECORD_LEN	(MAXPATHLEN + MAXPATHLEN + 1)
869 
870 /*
871  * The following are names used in the nvlist describing
872  * the pool's history log.
873  */
874 #define	ZPOOL_HIST_RECORD	"history record"
875 #define	ZPOOL_HIST_TIME		"history time"
876 #define	ZPOOL_HIST_CMD		"history command"
877 #define	ZPOOL_HIST_WHO		"history who"
878 #define	ZPOOL_HIST_ZONE		"history zone"
879 #define	ZPOOL_HIST_HOST		"history hostname"
880 #define	ZPOOL_HIST_TXG		"history txg"
881 #define	ZPOOL_HIST_INT_EVENT	"history internal event"
882 #define	ZPOOL_HIST_INT_STR	"history internal str"
883 #define	ZPOOL_HIST_INT_NAME	"internal_name"
884 #define	ZPOOL_HIST_IOCTL	"ioctl"
885 #define	ZPOOL_HIST_INPUT_NVL	"in_nvl"
886 #define	ZPOOL_HIST_OUTPUT_NVL	"out_nvl"
887 #define	ZPOOL_HIST_DSNAME	"dsname"
888 #define	ZPOOL_HIST_DSID		"dsid"
889 
890 /*
891  * Flags for ZFS_IOC_VDEV_SET_STATE
892  */
893 #define	ZFS_ONLINE_CHECKREMOVE	0x1
894 #define	ZFS_ONLINE_UNSPARE	0x2
895 #define	ZFS_ONLINE_FORCEFAULT	0x4
896 #define	ZFS_ONLINE_EXPAND	0x8
897 #define	ZFS_OFFLINE_TEMPORARY	0x1
898 
899 /*
900  * Flags for ZFS_IOC_POOL_IMPORT
901  */
902 #define	ZFS_IMPORT_NORMAL	0x0
903 #define	ZFS_IMPORT_VERBATIM	0x1
904 #define	ZFS_IMPORT_ANY_HOST	0x2
905 #define	ZFS_IMPORT_MISSING_LOG	0x4
906 #define	ZFS_IMPORT_ONLY		0x8
907 
908 /*
909  * Sysevent payload members.  ZFS will generate the following sysevents with the
910  * given payloads:
911  *
912  *	ESC_ZFS_RESILVER_START
913  *	ESC_ZFS_RESILVER_END
914  *	ESC_ZFS_POOL_DESTROY
915  *	ESC_ZFS_POOL_REGUID
916  *
917  *		ZFS_EV_POOL_NAME	DATA_TYPE_STRING
918  *		ZFS_EV_POOL_GUID	DATA_TYPE_UINT64
919  *
920  *	ESC_ZFS_VDEV_REMOVE
921  *	ESC_ZFS_VDEV_CLEAR
922  *	ESC_ZFS_VDEV_CHECK
923  *
924  *		ZFS_EV_POOL_NAME	DATA_TYPE_STRING
925  *		ZFS_EV_POOL_GUID	DATA_TYPE_UINT64
926  *		ZFS_EV_VDEV_PATH	DATA_TYPE_STRING	(optional)
927  *		ZFS_EV_VDEV_GUID	DATA_TYPE_UINT64
928  */
929 #define	ZFS_EV_POOL_NAME	"pool_name"
930 #define	ZFS_EV_POOL_GUID	"pool_guid"
931 #define	ZFS_EV_VDEV_PATH	"vdev_path"
932 #define	ZFS_EV_VDEV_GUID	"vdev_guid"
933 
934 #ifdef	__cplusplus
935 }
936 #endif
937 
938 #endif	/* _SYS_FS_ZFS_H */
939