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MFC r296519: MFV r296518: 5027 zfs large block support (add copyright)
[FreeBSD/stable/10.git] / sys / cddl / contrib / opensolaris / uts / common / sys / fs / zfs.h
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  * Copyright (c) 2012, Martin Matuska <mm@FreeBSD.org>. All rights reserved.
28  * Copyright (c) 2014 Integros [integros.com]
29  */
30
31 /* Portions Copyright 2010 Robert Milkowski */
32
33 #ifndef _SYS_FS_ZFS_H
34 #define _SYS_FS_ZFS_H
35
36 #include <sys/types.h>
37 #include <sys/ioccom.h>
38 #include <sys/time.h>
39
40 #ifdef  __cplusplus
41 extern "C" {
42 #endif
43
44 /*
45  * Types and constants shared between userland and the kernel.
46  */
47
48 /*
49  * Each dataset can be one of the following types.  These constants can be
50  * combined into masks that can be passed to various functions.
51  */
52 typedef enum {
53         ZFS_TYPE_FILESYSTEM     = (1 << 0),
54         ZFS_TYPE_SNAPSHOT       = (1 << 1),
55         ZFS_TYPE_VOLUME         = (1 << 2),
56         ZFS_TYPE_POOL           = (1 << 3),
57         ZFS_TYPE_BOOKMARK       = (1 << 4)
58 } zfs_type_t;
59
60 typedef enum dmu_objset_type {
61         DMU_OST_NONE,
62         DMU_OST_META,
63         DMU_OST_ZFS,
64         DMU_OST_ZVOL,
65         DMU_OST_OTHER,                  /* For testing only! */
66         DMU_OST_ANY,                    /* Be careful! */
67         DMU_OST_NUMTYPES
68 } dmu_objset_type_t;
69
70 #define ZFS_TYPE_DATASET        \
71         (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT)
72
73 #define ZAP_MAXNAMELEN 256
74 #define ZAP_MAXVALUELEN (1024 * 8)
75 #define ZAP_OLDMAXVALUELEN 1024
76
77 /*
78  * Dataset properties are identified by these constants and must be added to
79  * the end of this list to ensure that external consumers are not affected
80  * by the change. If you make any changes to this list, be sure to update
81  * the property table in usr/src/common/zfs/zfs_prop.c.
82  */
83 typedef enum {
84         ZFS_PROP_TYPE,
85         ZFS_PROP_CREATION,
86         ZFS_PROP_USED,
87         ZFS_PROP_AVAILABLE,
88         ZFS_PROP_REFERENCED,
89         ZFS_PROP_COMPRESSRATIO,
90         ZFS_PROP_MOUNTED,
91         ZFS_PROP_ORIGIN,
92         ZFS_PROP_QUOTA,
93         ZFS_PROP_RESERVATION,
94         ZFS_PROP_VOLSIZE,
95         ZFS_PROP_VOLBLOCKSIZE,
96         ZFS_PROP_RECORDSIZE,
97         ZFS_PROP_MOUNTPOINT,
98         ZFS_PROP_SHARENFS,
99         ZFS_PROP_CHECKSUM,
100         ZFS_PROP_COMPRESSION,
101         ZFS_PROP_ATIME,
102         ZFS_PROP_DEVICES,
103         ZFS_PROP_EXEC,
104         ZFS_PROP_SETUID,
105         ZFS_PROP_READONLY,
106         ZFS_PROP_ZONED,
107         ZFS_PROP_SNAPDIR,
108         ZFS_PROP_ACLMODE,
109         ZFS_PROP_ACLINHERIT,
110         ZFS_PROP_CREATETXG,             /* not exposed to the user */
111         ZFS_PROP_NAME,                  /* not exposed to the user */
112         ZFS_PROP_CANMOUNT,
113         ZFS_PROP_ISCSIOPTIONS,          /* not exposed to the user */
114         ZFS_PROP_XATTR,
115         ZFS_PROP_NUMCLONES,             /* not exposed to the user */
116         ZFS_PROP_COPIES,
117         ZFS_PROP_VERSION,
118         ZFS_PROP_UTF8ONLY,
119         ZFS_PROP_NORMALIZE,
120         ZFS_PROP_CASE,
121         ZFS_PROP_VSCAN,
122         ZFS_PROP_NBMAND,
123         ZFS_PROP_SHARESMB,
124         ZFS_PROP_REFQUOTA,
125         ZFS_PROP_REFRESERVATION,
126         ZFS_PROP_GUID,
127         ZFS_PROP_PRIMARYCACHE,
128         ZFS_PROP_SECONDARYCACHE,
129         ZFS_PROP_USEDSNAP,
130         ZFS_PROP_USEDDS,
131         ZFS_PROP_USEDCHILD,
132         ZFS_PROP_USEDREFRESERV,
133         ZFS_PROP_USERACCOUNTING,        /* not exposed to the user */
134         ZFS_PROP_STMF_SHAREINFO,        /* not exposed to the user */
135         ZFS_PROP_DEFER_DESTROY,
136         ZFS_PROP_USERREFS,
137         ZFS_PROP_LOGBIAS,
138         ZFS_PROP_UNIQUE,                /* not exposed to the user */
139         ZFS_PROP_OBJSETID,              /* not exposed to the user */
140         ZFS_PROP_DEDUP,
141         ZFS_PROP_MLSLABEL,
142         ZFS_PROP_SYNC,
143         ZFS_PROP_REFRATIO,
144         ZFS_PROP_WRITTEN,
145         ZFS_PROP_CLONES,
146         ZFS_PROP_LOGICALUSED,
147         ZFS_PROP_LOGICALREFERENCED,
148         ZFS_PROP_INCONSISTENT,          /* not exposed to the user */
149         ZFS_PROP_VOLMODE,
150         ZFS_PROP_FILESYSTEM_LIMIT,
151         ZFS_PROP_SNAPSHOT_LIMIT,
152         ZFS_PROP_FILESYSTEM_COUNT,
153         ZFS_PROP_SNAPSHOT_COUNT,
154         ZFS_PROP_REDUNDANT_METADATA,
155         ZFS_PROP_PREV_SNAP,
156         ZFS_PROP_RECEIVE_RESUME_TOKEN,
157         ZFS_NUM_PROPS
158 } zfs_prop_t;
159
160 typedef enum {
161         ZFS_PROP_USERUSED,
162         ZFS_PROP_USERQUOTA,
163         ZFS_PROP_GROUPUSED,
164         ZFS_PROP_GROUPQUOTA,
165         ZFS_NUM_USERQUOTA_PROPS
166 } zfs_userquota_prop_t;
167
168 extern const char *zfs_userquota_prop_prefixes[ZFS_NUM_USERQUOTA_PROPS];
169
170 /*
171  * Pool properties are identified by these constants and must be added to the
172  * end of this list to ensure that external consumers are not affected
173  * by the change. If you make any changes to this list, be sure to update
174  * the property table in usr/src/common/zfs/zpool_prop.c.
175  */
176 typedef enum {
177         ZPOOL_PROP_NAME,
178         ZPOOL_PROP_SIZE,
179         ZPOOL_PROP_CAPACITY,
180         ZPOOL_PROP_ALTROOT,
181         ZPOOL_PROP_HEALTH,
182         ZPOOL_PROP_GUID,
183         ZPOOL_PROP_VERSION,
184         ZPOOL_PROP_BOOTFS,
185         ZPOOL_PROP_DELEGATION,
186         ZPOOL_PROP_AUTOREPLACE,
187         ZPOOL_PROP_CACHEFILE,
188         ZPOOL_PROP_FAILUREMODE,
189         ZPOOL_PROP_LISTSNAPS,
190         ZPOOL_PROP_AUTOEXPAND,
191         ZPOOL_PROP_DEDUPDITTO,
192         ZPOOL_PROP_DEDUPRATIO,
193         ZPOOL_PROP_FREE,
194         ZPOOL_PROP_ALLOCATED,
195         ZPOOL_PROP_READONLY,
196         ZPOOL_PROP_COMMENT,
197         ZPOOL_PROP_EXPANDSZ,
198         ZPOOL_PROP_FREEING,
199         ZPOOL_PROP_FRAGMENTATION,
200         ZPOOL_PROP_LEAKED,
201         ZPOOL_PROP_MAXBLOCKSIZE,
202         ZPOOL_NUM_PROPS
203 } zpool_prop_t;
204
205 /* Small enough to not hog a whole line of printout in zpool(1M). */
206 #define ZPROP_MAX_COMMENT       32
207
208 #define ZPROP_CONT              -2
209 #define ZPROP_INVAL             -1
210
211 #define ZPROP_VALUE             "value"
212 #define ZPROP_SOURCE            "source"
213
214 typedef enum {
215         ZPROP_SRC_NONE = 0x1,
216         ZPROP_SRC_DEFAULT = 0x2,
217         ZPROP_SRC_TEMPORARY = 0x4,
218         ZPROP_SRC_LOCAL = 0x8,
219         ZPROP_SRC_INHERITED = 0x10,
220         ZPROP_SRC_RECEIVED = 0x20
221 } zprop_source_t;
222
223 #define ZPROP_SRC_ALL   0x3f
224
225 #define ZPROP_SOURCE_VAL_RECVD  "$recvd"
226 #define ZPROP_N_MORE_ERRORS     "N_MORE_ERRORS"
227 /*
228  * Dataset flag implemented as a special entry in the props zap object
229  * indicating that the dataset has received properties on or after
230  * SPA_VERSION_RECVD_PROPS. The first such receive blows away local properties
231  * just as it did in earlier versions, and thereafter, local properties are
232  * preserved.
233  */
234 #define ZPROP_HAS_RECVD         "$hasrecvd"
235
236 typedef enum {
237         ZPROP_ERR_NOCLEAR = 0x1, /* failure to clear existing props */
238         ZPROP_ERR_NORESTORE = 0x2 /* failure to restore props on error */
239 } zprop_errflags_t;
240
241 typedef int (*zprop_func)(int, void *);
242
243 /*
244  * Properties to be set on the root file system of a new pool
245  * are stuffed into their own nvlist, which is then included in
246  * the properties nvlist with the pool properties.
247  */
248 #define ZPOOL_ROOTFS_PROPS      "root-props-nvl"
249
250 /*
251  * Dataset property functions shared between libzfs and kernel.
252  */
253 const char *zfs_prop_default_string(zfs_prop_t);
254 uint64_t zfs_prop_default_numeric(zfs_prop_t);
255 boolean_t zfs_prop_readonly(zfs_prop_t);
256 boolean_t zfs_prop_inheritable(zfs_prop_t);
257 boolean_t zfs_prop_setonce(zfs_prop_t);
258 const char *zfs_prop_to_name(zfs_prop_t);
259 zfs_prop_t zfs_name_to_prop(const char *);
260 boolean_t zfs_prop_user(const char *);
261 boolean_t zfs_prop_userquota(const char *);
262 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);
263 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *);
264 uint64_t zfs_prop_random_value(zfs_prop_t, uint64_t seed);
265 boolean_t zfs_prop_valid_for_type(int, zfs_type_t);
266
267 /*
268  * Pool property functions shared between libzfs and kernel.
269  */
270 zpool_prop_t zpool_name_to_prop(const char *);
271 const char *zpool_prop_to_name(zpool_prop_t);
272 const char *zpool_prop_default_string(zpool_prop_t);
273 uint64_t zpool_prop_default_numeric(zpool_prop_t);
274 boolean_t zpool_prop_readonly(zpool_prop_t);
275 boolean_t zpool_prop_feature(const char *);
276 boolean_t zpool_prop_unsupported(const char *name);
277 int zpool_prop_index_to_string(zpool_prop_t, uint64_t, const char **);
278 int zpool_prop_string_to_index(zpool_prop_t, const char *, uint64_t *);
279 uint64_t zpool_prop_random_value(zpool_prop_t, uint64_t seed);
280
281 /*
282  * Definitions for the Delegation.
283  */
284 typedef enum {
285         ZFS_DELEG_WHO_UNKNOWN = 0,
286         ZFS_DELEG_USER = 'u',
287         ZFS_DELEG_USER_SETS = 'U',
288         ZFS_DELEG_GROUP = 'g',
289         ZFS_DELEG_GROUP_SETS = 'G',
290         ZFS_DELEG_EVERYONE = 'e',
291         ZFS_DELEG_EVERYONE_SETS = 'E',
292         ZFS_DELEG_CREATE = 'c',
293         ZFS_DELEG_CREATE_SETS = 'C',
294         ZFS_DELEG_NAMED_SET = 's',
295         ZFS_DELEG_NAMED_SET_SETS = 'S'
296 } zfs_deleg_who_type_t;
297
298 typedef enum {
299         ZFS_DELEG_NONE = 0,
300         ZFS_DELEG_PERM_LOCAL = 1,
301         ZFS_DELEG_PERM_DESCENDENT = 2,
302         ZFS_DELEG_PERM_LOCALDESCENDENT = 3,
303         ZFS_DELEG_PERM_CREATE = 4
304 } zfs_deleg_inherit_t;
305
306 #define ZFS_DELEG_PERM_UID      "uid"
307 #define ZFS_DELEG_PERM_GID      "gid"
308 #define ZFS_DELEG_PERM_GROUPS   "groups"
309
310 #define ZFS_MLSLABEL_DEFAULT    "none"
311
312 #define ZFS_SMB_ACL_SRC         "src"
313 #define ZFS_SMB_ACL_TARGET      "target"
314
315 typedef enum {
316         ZFS_CANMOUNT_OFF = 0,
317         ZFS_CANMOUNT_ON = 1,
318         ZFS_CANMOUNT_NOAUTO = 2
319 } zfs_canmount_type_t;
320
321 typedef enum {
322         ZFS_LOGBIAS_LATENCY = 0,
323         ZFS_LOGBIAS_THROUGHPUT = 1
324 } zfs_logbias_op_t;
325
326 typedef enum zfs_share_op {
327         ZFS_SHARE_NFS = 0,
328         ZFS_UNSHARE_NFS = 1,
329         ZFS_SHARE_SMB = 2,
330         ZFS_UNSHARE_SMB = 3
331 } zfs_share_op_t;
332
333 typedef enum zfs_smb_acl_op {
334         ZFS_SMB_ACL_ADD,
335         ZFS_SMB_ACL_REMOVE,
336         ZFS_SMB_ACL_RENAME,
337         ZFS_SMB_ACL_PURGE
338 } zfs_smb_acl_op_t;
339
340 typedef enum zfs_cache_type {
341         ZFS_CACHE_NONE = 0,
342         ZFS_CACHE_METADATA = 1,
343         ZFS_CACHE_ALL = 2
344 } zfs_cache_type_t;
345
346 typedef enum {
347         ZFS_SYNC_STANDARD = 0,
348         ZFS_SYNC_ALWAYS = 1,
349         ZFS_SYNC_DISABLED = 2
350 } zfs_sync_type_t;
351
352 typedef enum {
353         ZFS_VOLMODE_DEFAULT = 0,
354         ZFS_VOLMODE_GEOM = 1,
355         ZFS_VOLMODE_DEV = 2,
356         ZFS_VOLMODE_NONE = 3
357 } zfs_volmode_t;
358
359 typedef enum {
360         ZFS_REDUNDANT_METADATA_ALL,
361         ZFS_REDUNDANT_METADATA_MOST
362 } zfs_redundant_metadata_type_t;
363
364 /*
365  * On-disk version number.
366  */
367 #define SPA_VERSION_1                   1ULL
368 #define SPA_VERSION_2                   2ULL
369 #define SPA_VERSION_3                   3ULL
370 #define SPA_VERSION_4                   4ULL
371 #define SPA_VERSION_5                   5ULL
372 #define SPA_VERSION_6                   6ULL
373 #define SPA_VERSION_7                   7ULL
374 #define SPA_VERSION_8                   8ULL
375 #define SPA_VERSION_9                   9ULL
376 #define SPA_VERSION_10                  10ULL
377 #define SPA_VERSION_11                  11ULL
378 #define SPA_VERSION_12                  12ULL
379 #define SPA_VERSION_13                  13ULL
380 #define SPA_VERSION_14                  14ULL
381 #define SPA_VERSION_15                  15ULL
382 #define SPA_VERSION_16                  16ULL
383 #define SPA_VERSION_17                  17ULL
384 #define SPA_VERSION_18                  18ULL
385 #define SPA_VERSION_19                  19ULL
386 #define SPA_VERSION_20                  20ULL
387 #define SPA_VERSION_21                  21ULL
388 #define SPA_VERSION_22                  22ULL
389 #define SPA_VERSION_23                  23ULL
390 #define SPA_VERSION_24                  24ULL
391 #define SPA_VERSION_25                  25ULL
392 #define SPA_VERSION_26                  26ULL
393 #define SPA_VERSION_27                  27ULL
394 #define SPA_VERSION_28                  28ULL
395 #define SPA_VERSION_5000                5000ULL
396
397 /*
398  * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk
399  * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*},
400  * and do the appropriate changes.  Also bump the version number in
401  * usr/src/grub/capability.
402  */
403 #define SPA_VERSION                     SPA_VERSION_5000
404 #define SPA_VERSION_STRING              "5000"
405
406 /*
407  * Symbolic names for the changes that caused a SPA_VERSION switch.
408  * Used in the code when checking for presence or absence of a feature.
409  * Feel free to define multiple symbolic names for each version if there
410  * were multiple changes to on-disk structures during that version.
411  *
412  * NOTE: When checking the current SPA_VERSION in your code, be sure
413  *       to use spa_version() since it reports the version of the
414  *       last synced uberblock.  Checking the in-flight version can
415  *       be dangerous in some cases.
416  */
417 #define SPA_VERSION_INITIAL             SPA_VERSION_1
418 #define SPA_VERSION_DITTO_BLOCKS        SPA_VERSION_2
419 #define SPA_VERSION_SPARES              SPA_VERSION_3
420 #define SPA_VERSION_RAIDZ2              SPA_VERSION_3
421 #define SPA_VERSION_BPOBJ_ACCOUNT       SPA_VERSION_3
422 #define SPA_VERSION_RAIDZ_DEFLATE       SPA_VERSION_3
423 #define SPA_VERSION_DNODE_BYTES         SPA_VERSION_3
424 #define SPA_VERSION_ZPOOL_HISTORY       SPA_VERSION_4
425 #define SPA_VERSION_GZIP_COMPRESSION    SPA_VERSION_5
426 #define SPA_VERSION_BOOTFS              SPA_VERSION_6
427 #define SPA_VERSION_SLOGS               SPA_VERSION_7
428 #define SPA_VERSION_DELEGATED_PERMS     SPA_VERSION_8
429 #define SPA_VERSION_FUID                SPA_VERSION_9
430 #define SPA_VERSION_REFRESERVATION      SPA_VERSION_9
431 #define SPA_VERSION_REFQUOTA            SPA_VERSION_9
432 #define SPA_VERSION_UNIQUE_ACCURATE     SPA_VERSION_9
433 #define SPA_VERSION_L2CACHE             SPA_VERSION_10
434 #define SPA_VERSION_NEXT_CLONES         SPA_VERSION_11
435 #define SPA_VERSION_ORIGIN              SPA_VERSION_11
436 #define SPA_VERSION_DSL_SCRUB           SPA_VERSION_11
437 #define SPA_VERSION_SNAP_PROPS          SPA_VERSION_12
438 #define SPA_VERSION_USED_BREAKDOWN      SPA_VERSION_13
439 #define SPA_VERSION_PASSTHROUGH_X       SPA_VERSION_14
440 #define SPA_VERSION_USERSPACE           SPA_VERSION_15
441 #define SPA_VERSION_STMF_PROP           SPA_VERSION_16
442 #define SPA_VERSION_RAIDZ3              SPA_VERSION_17
443 #define SPA_VERSION_USERREFS            SPA_VERSION_18
444 #define SPA_VERSION_HOLES               SPA_VERSION_19
445 #define SPA_VERSION_ZLE_COMPRESSION     SPA_VERSION_20
446 #define SPA_VERSION_DEDUP               SPA_VERSION_21
447 #define SPA_VERSION_RECVD_PROPS         SPA_VERSION_22
448 #define SPA_VERSION_SLIM_ZIL            SPA_VERSION_23
449 #define SPA_VERSION_SA                  SPA_VERSION_24
450 #define SPA_VERSION_SCAN                SPA_VERSION_25
451 #define SPA_VERSION_DIR_CLONES          SPA_VERSION_26
452 #define SPA_VERSION_DEADLISTS           SPA_VERSION_26
453 #define SPA_VERSION_FAST_SNAP           SPA_VERSION_27
454 #define SPA_VERSION_MULTI_REPLACE       SPA_VERSION_28
455 #define SPA_VERSION_BEFORE_FEATURES     SPA_VERSION_28
456 #define SPA_VERSION_FEATURES            SPA_VERSION_5000
457
458 #define SPA_VERSION_IS_SUPPORTED(v) \
459         (((v) >= SPA_VERSION_INITIAL && (v) <= SPA_VERSION_BEFORE_FEATURES) || \
460         ((v) >= SPA_VERSION_FEATURES && (v) <= SPA_VERSION))
461
462 /*
463  * ZPL version - rev'd whenever an incompatible on-disk format change
464  * occurs.  This is independent of SPA/DMU/ZAP versioning.  You must
465  * also update the version_table[] and help message in zfs_prop.c.
466  *
467  * When changing, be sure to teach GRUB how to read the new format!
468  * See usr/src/grub/grub-0.97/stage2/{zfs-include/,fsys_zfs*}
469  */
470 #define ZPL_VERSION_1                   1ULL
471 #define ZPL_VERSION_2                   2ULL
472 #define ZPL_VERSION_3                   3ULL
473 #define ZPL_VERSION_4                   4ULL
474 #define ZPL_VERSION_5                   5ULL
475 #define ZPL_VERSION                     ZPL_VERSION_5
476 #define ZPL_VERSION_STRING              "5"
477
478 #define ZPL_VERSION_INITIAL             ZPL_VERSION_1
479 #define ZPL_VERSION_DIRENT_TYPE         ZPL_VERSION_2
480 #define ZPL_VERSION_FUID                ZPL_VERSION_3
481 #define ZPL_VERSION_NORMALIZATION       ZPL_VERSION_3
482 #define ZPL_VERSION_SYSATTR             ZPL_VERSION_3
483 #define ZPL_VERSION_USERSPACE           ZPL_VERSION_4
484 #define ZPL_VERSION_SA                  ZPL_VERSION_5
485
486 /* Rewind request information */
487 #define ZPOOL_NO_REWIND         1  /* No policy - default behavior */
488 #define ZPOOL_NEVER_REWIND      2  /* Do not search for best txg or rewind */
489 #define ZPOOL_TRY_REWIND        4  /* Search for best txg, but do not rewind */
490 #define ZPOOL_DO_REWIND         8  /* Rewind to best txg w/in deferred frees */
491 #define ZPOOL_EXTREME_REWIND    16 /* Allow extreme measures to find best txg */
492 #define ZPOOL_REWIND_MASK       28 /* All the possible rewind bits */
493 #define ZPOOL_REWIND_POLICIES   31 /* All the possible policy bits */
494
495 typedef struct zpool_rewind_policy {
496         uint32_t        zrp_request;    /* rewind behavior requested */
497         uint64_t        zrp_maxmeta;    /* max acceptable meta-data errors */
498         uint64_t        zrp_maxdata;    /* max acceptable data errors */
499         uint64_t        zrp_txg;        /* specific txg to load */
500 } zpool_rewind_policy_t;
501
502 /*
503  * The following are configuration names used in the nvlist describing a pool's
504  * configuration.
505  */
506 #define ZPOOL_CONFIG_VERSION            "version"
507 #define ZPOOL_CONFIG_POOL_NAME          "name"
508 #define ZPOOL_CONFIG_POOL_STATE         "state"
509 #define ZPOOL_CONFIG_POOL_TXG           "txg"
510 #define ZPOOL_CONFIG_POOL_GUID          "pool_guid"
511 #define ZPOOL_CONFIG_CREATE_TXG         "create_txg"
512 #define ZPOOL_CONFIG_TOP_GUID           "top_guid"
513 #define ZPOOL_CONFIG_VDEV_TREE          "vdev_tree"
514 #define ZPOOL_CONFIG_TYPE               "type"
515 #define ZPOOL_CONFIG_CHILDREN           "children"
516 #define ZPOOL_CONFIG_ID                 "id"
517 #define ZPOOL_CONFIG_GUID               "guid"
518 #define ZPOOL_CONFIG_PATH               "path"
519 #define ZPOOL_CONFIG_DEVID              "devid"
520 #define ZPOOL_CONFIG_METASLAB_ARRAY     "metaslab_array"
521 #define ZPOOL_CONFIG_METASLAB_SHIFT     "metaslab_shift"
522 #define ZPOOL_CONFIG_ASHIFT             "ashift"
523 #define ZPOOL_CONFIG_ASIZE              "asize"
524 #define ZPOOL_CONFIG_DTL                "DTL"
525 #define ZPOOL_CONFIG_SCAN_STATS         "scan_stats"    /* not stored on disk */
526 #define ZPOOL_CONFIG_VDEV_STATS         "vdev_stats"    /* not stored on disk */
527 #define ZPOOL_CONFIG_WHOLE_DISK         "whole_disk"
528 #define ZPOOL_CONFIG_ERRCOUNT           "error_count"
529 #define ZPOOL_CONFIG_NOT_PRESENT        "not_present"
530 #define ZPOOL_CONFIG_SPARES             "spares"
531 #define ZPOOL_CONFIG_IS_SPARE           "is_spare"
532 #define ZPOOL_CONFIG_NPARITY            "nparity"
533 #define ZPOOL_CONFIG_HOSTID             "hostid"
534 #define ZPOOL_CONFIG_HOSTNAME           "hostname"
535 #define ZPOOL_CONFIG_LOADED_TIME        "initial_load_time"
536 #define ZPOOL_CONFIG_UNSPARE            "unspare"
537 #define ZPOOL_CONFIG_PHYS_PATH          "phys_path"
538 #define ZPOOL_CONFIG_IS_LOG             "is_log"
539 #define ZPOOL_CONFIG_L2CACHE            "l2cache"
540 #define ZPOOL_CONFIG_HOLE_ARRAY         "hole_array"
541 #define ZPOOL_CONFIG_VDEV_CHILDREN      "vdev_children"
542 #define ZPOOL_CONFIG_IS_HOLE            "is_hole"
543 #define ZPOOL_CONFIG_DDT_HISTOGRAM      "ddt_histogram"
544 #define ZPOOL_CONFIG_DDT_OBJ_STATS      "ddt_object_stats"
545 #define ZPOOL_CONFIG_DDT_STATS          "ddt_stats"
546 #define ZPOOL_CONFIG_SPLIT              "splitcfg"
547 #define ZPOOL_CONFIG_ORIG_GUID          "orig_guid"
548 #define ZPOOL_CONFIG_SPLIT_GUID         "split_guid"
549 #define ZPOOL_CONFIG_SPLIT_LIST         "guid_list"
550 #define ZPOOL_CONFIG_REMOVING           "removing"
551 #define ZPOOL_CONFIG_RESILVER_TXG       "resilver_txg"
552 #define ZPOOL_CONFIG_COMMENT            "comment"
553 #define ZPOOL_CONFIG_SUSPENDED          "suspended"     /* not stored on disk */
554 #define ZPOOL_CONFIG_TIMESTAMP          "timestamp"     /* not stored on disk */
555 #define ZPOOL_CONFIG_BOOTFS             "bootfs"        /* not stored on disk */
556 #define ZPOOL_CONFIG_MISSING_DEVICES    "missing_vdevs" /* not stored on disk */
557 #define ZPOOL_CONFIG_LOAD_INFO          "load_info"     /* not stored on disk */
558 #define ZPOOL_CONFIG_REWIND_INFO        "rewind_info"   /* not stored on disk */
559 #define ZPOOL_CONFIG_UNSUP_FEAT         "unsup_feat"    /* not stored on disk */
560 #define ZPOOL_CONFIG_ENABLED_FEAT       "enabled_feat"  /* not stored on disk */
561 #define ZPOOL_CONFIG_CAN_RDONLY         "can_rdonly"    /* not stored on disk */
562 #define ZPOOL_CONFIG_FEATURES_FOR_READ  "features_for_read"
563 #define ZPOOL_CONFIG_FEATURE_STATS      "feature_stats" /* not stored on disk */
564 /*
565  * The persistent vdev state is stored as separate values rather than a single
566  * 'vdev_state' entry.  This is because a device can be in multiple states, such
567  * as offline and degraded.
568  */
569 #define ZPOOL_CONFIG_OFFLINE            "offline"
570 #define ZPOOL_CONFIG_FAULTED            "faulted"
571 #define ZPOOL_CONFIG_DEGRADED           "degraded"
572 #define ZPOOL_CONFIG_REMOVED            "removed"
573 #define ZPOOL_CONFIG_FRU                "fru"
574 #define ZPOOL_CONFIG_AUX_STATE          "aux_state"
575
576 /* Rewind policy parameters */
577 #define ZPOOL_REWIND_POLICY             "rewind-policy"
578 #define ZPOOL_REWIND_REQUEST            "rewind-request"
579 #define ZPOOL_REWIND_REQUEST_TXG        "rewind-request-txg"
580 #define ZPOOL_REWIND_META_THRESH        "rewind-meta-thresh"
581 #define ZPOOL_REWIND_DATA_THRESH        "rewind-data-thresh"
582
583 /* Rewind data discovered */
584 #define ZPOOL_CONFIG_LOAD_TIME          "rewind_txg_ts"
585 #define ZPOOL_CONFIG_LOAD_DATA_ERRORS   "verify_data_errors"
586 #define ZPOOL_CONFIG_REWIND_TIME        "seconds_of_rewind"
587
588 #define VDEV_TYPE_ROOT                  "root"
589 #define VDEV_TYPE_MIRROR                "mirror"
590 #define VDEV_TYPE_REPLACING             "replacing"
591 #define VDEV_TYPE_RAIDZ                 "raidz"
592 #define VDEV_TYPE_DISK                  "disk"
593 #define VDEV_TYPE_FILE                  "file"
594 #define VDEV_TYPE_MISSING               "missing"
595 #define VDEV_TYPE_HOLE                  "hole"
596 #define VDEV_TYPE_SPARE                 "spare"
597 #define VDEV_TYPE_LOG                   "log"
598 #define VDEV_TYPE_L2CACHE               "l2cache"
599
600 /*
601  * This is needed in userland to report the minimum necessary device size.
602  */
603 #define SPA_MINDEVSIZE          (64ULL << 20)
604
605 /*
606  * Set if the fragmentation has not yet been calculated. This can happen
607  * because the space maps have not been upgraded or the histogram feature
608  * is not enabled.
609  */
610 #define ZFS_FRAG_INVALID        UINT64_MAX
611
612 /*
613  * The location of the pool configuration repository, shared between kernel and
614  * userland.
615  */
616 #define ZPOOL_CACHE             "/boot/zfs/zpool.cache"
617
618 /*
619  * vdev states are ordered from least to most healthy.
620  * A vdev that's CANT_OPEN or below is considered unusable.
621  */
622 typedef enum vdev_state {
623         VDEV_STATE_UNKNOWN = 0, /* Uninitialized vdev                   */
624         VDEV_STATE_CLOSED,      /* Not currently open                   */
625         VDEV_STATE_OFFLINE,     /* Not allowed to open                  */
626         VDEV_STATE_REMOVED,     /* Explicitly removed from system       */
627         VDEV_STATE_CANT_OPEN,   /* Tried to open, but failed            */
628         VDEV_STATE_FAULTED,     /* External request to fault device     */
629         VDEV_STATE_DEGRADED,    /* Replicated vdev with unhealthy kids  */
630         VDEV_STATE_HEALTHY      /* Presumed good                        */
631 } vdev_state_t;
632
633 #define VDEV_STATE_ONLINE       VDEV_STATE_HEALTHY
634
635 /*
636  * vdev aux states.  When a vdev is in the CANT_OPEN state, the aux field
637  * of the vdev stats structure uses these constants to distinguish why.
638  */
639 typedef enum vdev_aux {
640         VDEV_AUX_NONE,          /* no error                             */
641         VDEV_AUX_OPEN_FAILED,   /* ldi_open_*() or vn_open() failed     */
642         VDEV_AUX_CORRUPT_DATA,  /* bad label or disk contents           */
643         VDEV_AUX_NO_REPLICAS,   /* insufficient number of replicas      */
644         VDEV_AUX_BAD_GUID_SUM,  /* vdev guid sum doesn't match          */
645         VDEV_AUX_TOO_SMALL,     /* vdev size is too small               */
646         VDEV_AUX_BAD_LABEL,     /* the label is OK but invalid          */
647         VDEV_AUX_VERSION_NEWER, /* on-disk version is too new           */
648         VDEV_AUX_VERSION_OLDER, /* on-disk version is too old           */
649         VDEV_AUX_UNSUP_FEAT,    /* unsupported features                 */
650         VDEV_AUX_SPARED,        /* hot spare used in another pool       */
651         VDEV_AUX_ERR_EXCEEDED,  /* too many errors                      */
652         VDEV_AUX_IO_FAILURE,    /* experienced I/O failure              */
653         VDEV_AUX_BAD_LOG,       /* cannot read log chain(s)             */
654         VDEV_AUX_EXTERNAL,      /* external diagnosis                   */
655         VDEV_AUX_SPLIT_POOL,    /* vdev was split off into another pool */
656         VDEV_AUX_ASHIFT_TOO_BIG /* vdev's min block size is too large   */
657 } vdev_aux_t;
658
659 /*
660  * pool state.  The following states are written to disk as part of the normal
661  * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE.  The remaining
662  * states are software abstractions used at various levels to communicate
663  * pool state.
664  */
665 typedef enum pool_state {
666         POOL_STATE_ACTIVE = 0,          /* In active use                */
667         POOL_STATE_EXPORTED,            /* Explicitly exported          */
668         POOL_STATE_DESTROYED,           /* Explicitly destroyed         */
669         POOL_STATE_SPARE,               /* Reserved for hot spare use   */
670         POOL_STATE_L2CACHE,             /* Level 2 ARC device           */
671         POOL_STATE_UNINITIALIZED,       /* Internal spa_t state         */
672         POOL_STATE_UNAVAIL,             /* Internal libzfs state        */
673         POOL_STATE_POTENTIALLY_ACTIVE   /* Internal libzfs state        */
674 } pool_state_t;
675
676 /*
677  * Scan Functions.
678  */
679 typedef enum pool_scan_func {
680         POOL_SCAN_NONE,
681         POOL_SCAN_SCRUB,
682         POOL_SCAN_RESILVER,
683         POOL_SCAN_FUNCS
684 } pool_scan_func_t;
685
686 /*
687  * ZIO types.  Needed to interpret vdev statistics below.
688  */
689 typedef enum zio_type {
690         ZIO_TYPE_NULL = 0,
691         ZIO_TYPE_READ,
692         ZIO_TYPE_WRITE,
693         ZIO_TYPE_FREE,
694         ZIO_TYPE_CLAIM,
695         ZIO_TYPE_IOCTL,
696         ZIO_TYPES
697 } zio_type_t;
698
699 /*
700  * Pool statistics.  Note: all fields should be 64-bit because this
701  * is passed between kernel and userland as an nvlist uint64 array.
702  */
703 typedef struct pool_scan_stat {
704         /* values stored on disk */
705         uint64_t        pss_func;       /* pool_scan_func_t */
706         uint64_t        pss_state;      /* dsl_scan_state_t */
707         uint64_t        pss_start_time; /* scan start time */
708         uint64_t        pss_end_time;   /* scan end time */
709         uint64_t        pss_to_examine; /* total bytes to scan */
710         uint64_t        pss_examined;   /* total examined bytes */
711         uint64_t        pss_to_process; /* total bytes to process */
712         uint64_t        pss_processed;  /* total processed bytes */
713         uint64_t        pss_errors;     /* scan errors  */
714
715         /* values not stored on disk */
716         uint64_t        pss_pass_exam;  /* examined bytes per scan pass */
717         uint64_t        pss_pass_start; /* start time of a scan pass */
718 } pool_scan_stat_t;
719
720 typedef enum dsl_scan_state {
721         DSS_NONE,
722         DSS_SCANNING,
723         DSS_FINISHED,
724         DSS_CANCELED,
725         DSS_NUM_STATES
726 } dsl_scan_state_t;
727
728
729 /*
730  * Vdev statistics.  Note: all fields should be 64-bit because this
731  * is passed between kernel and userland as an nvlist uint64 array.
732  */
733 typedef struct vdev_stat {
734         hrtime_t        vs_timestamp;           /* time since vdev load */
735         uint64_t        vs_state;               /* vdev state           */
736         uint64_t        vs_aux;                 /* see vdev_aux_t       */
737         uint64_t        vs_alloc;               /* space allocated      */
738         uint64_t        vs_space;               /* total capacity       */
739         uint64_t        vs_dspace;              /* deflated capacity    */
740         uint64_t        vs_rsize;               /* replaceable dev size */
741         uint64_t        vs_esize;               /* expandable dev size */
742         uint64_t        vs_ops[ZIO_TYPES];      /* operation count      */
743         uint64_t        vs_bytes[ZIO_TYPES];    /* bytes read/written   */
744         uint64_t        vs_read_errors;         /* read errors          */
745         uint64_t        vs_write_errors;        /* write errors         */
746         uint64_t        vs_checksum_errors;     /* checksum errors      */
747         uint64_t        vs_self_healed;         /* self-healed bytes    */
748         uint64_t        vs_scan_removing;       /* removing?    */
749         uint64_t        vs_scan_processed;      /* scan processed bytes */
750         uint64_t        vs_configured_ashift;   /* TLV vdev_ashift      */
751         uint64_t        vs_logical_ashift;      /* vdev_logical_ashift  */
752         uint64_t        vs_physical_ashift;     /* vdev_physical_ashift */
753         uint64_t        vs_fragmentation;       /* device fragmentation */
754 } vdev_stat_t;
755 #define VDEV_STAT_VALID(field, uint64_t_field_count) \
756     ((uint64_t_field_count * sizeof(uint64_t)) >= \
757      (offsetof(vdev_stat_t, field) + sizeof(((vdev_stat_t *)NULL)->field)))
758
759 /*
760  * DDT statistics.  Note: all fields should be 64-bit because this
761  * is passed between kernel and userland as an nvlist uint64 array.
762  */
763 typedef struct ddt_object {
764         uint64_t        ddo_count;      /* number of elments in ddt     */
765         uint64_t        ddo_dspace;     /* size of ddt on disk          */
766         uint64_t        ddo_mspace;     /* size of ddt in-core          */
767 } ddt_object_t;
768
769 typedef struct ddt_stat {
770         uint64_t        dds_blocks;     /* blocks                       */
771         uint64_t        dds_lsize;      /* logical size                 */
772         uint64_t        dds_psize;      /* physical size                */
773         uint64_t        dds_dsize;      /* deflated allocated size      */
774         uint64_t        dds_ref_blocks; /* referenced blocks            */
775         uint64_t        dds_ref_lsize;  /* referenced lsize * refcnt    */
776         uint64_t        dds_ref_psize;  /* referenced psize * refcnt    */
777         uint64_t        dds_ref_dsize;  /* referenced dsize * refcnt    */
778 } ddt_stat_t;
779
780 typedef struct ddt_histogram {
781         ddt_stat_t      ddh_stat[64];   /* power-of-two histogram buckets */
782 } ddt_histogram_t;
783
784 #define ZVOL_DRIVER     "zvol"
785 #define ZFS_DRIVER      "zfs"
786 #define ZFS_DEV_NAME    "zfs"
787 #define ZFS_DEV         "/dev/" ZFS_DEV_NAME
788
789 /* general zvol path */
790 #define ZVOL_DIR                "/dev/zvol"
791 /* expansion */
792 #define ZVOL_PSEUDO_DEV         "/devices/pseudo/zfs@0:"
793 /* for dump and swap */
794 #define ZVOL_FULL_DEV_DIR       ZVOL_DIR "/dsk/"
795 #define ZVOL_FULL_RDEV_DIR      ZVOL_DIR "/rdsk/"
796
797 #define ZVOL_PROP_NAME          "name"
798 #define ZVOL_DEFAULT_BLOCKSIZE  8192
799
800 /*
801  * /dev/zfs ioctl numbers.
802  */
803 typedef enum zfs_ioc {
804         ZFS_IOC_FIRST = 0,
805         ZFS_IOC_POOL_CREATE = ZFS_IOC_FIRST,
806         ZFS_IOC_POOL_DESTROY,
807         ZFS_IOC_POOL_IMPORT,
808         ZFS_IOC_POOL_EXPORT,
809         ZFS_IOC_POOL_CONFIGS,
810         ZFS_IOC_POOL_STATS,
811         ZFS_IOC_POOL_TRYIMPORT,
812         ZFS_IOC_POOL_SCAN,
813         ZFS_IOC_POOL_FREEZE,
814         ZFS_IOC_POOL_UPGRADE,
815         ZFS_IOC_POOL_GET_HISTORY,
816         ZFS_IOC_VDEV_ADD,
817         ZFS_IOC_VDEV_REMOVE,
818         ZFS_IOC_VDEV_SET_STATE,
819         ZFS_IOC_VDEV_ATTACH,
820         ZFS_IOC_VDEV_DETACH,
821         ZFS_IOC_VDEV_SETPATH,
822         ZFS_IOC_VDEV_SETFRU,
823         ZFS_IOC_OBJSET_STATS,
824         ZFS_IOC_OBJSET_ZPLPROPS,
825         ZFS_IOC_DATASET_LIST_NEXT,
826         ZFS_IOC_SNAPSHOT_LIST_NEXT,
827         ZFS_IOC_SET_PROP,
828         ZFS_IOC_CREATE,
829         ZFS_IOC_DESTROY,
830         ZFS_IOC_ROLLBACK,
831         ZFS_IOC_RENAME,
832         ZFS_IOC_RECV,
833         ZFS_IOC_SEND,
834         ZFS_IOC_INJECT_FAULT,
835         ZFS_IOC_CLEAR_FAULT,
836         ZFS_IOC_INJECT_LIST_NEXT,
837         ZFS_IOC_ERROR_LOG,
838         ZFS_IOC_CLEAR,
839         ZFS_IOC_PROMOTE,
840         ZFS_IOC_DESTROY_SNAPS,
841         ZFS_IOC_SNAPSHOT,
842         ZFS_IOC_DSOBJ_TO_DSNAME,
843         ZFS_IOC_OBJ_TO_PATH,
844         ZFS_IOC_POOL_SET_PROPS,
845         ZFS_IOC_POOL_GET_PROPS,
846         ZFS_IOC_SET_FSACL,
847         ZFS_IOC_GET_FSACL,
848         ZFS_IOC_SHARE,
849         ZFS_IOC_INHERIT_PROP,
850         ZFS_IOC_SMB_ACL,
851         ZFS_IOC_USERSPACE_ONE,
852         ZFS_IOC_USERSPACE_MANY,
853         ZFS_IOC_USERSPACE_UPGRADE,
854         ZFS_IOC_HOLD,
855         ZFS_IOC_RELEASE,
856         ZFS_IOC_GET_HOLDS,
857         ZFS_IOC_OBJSET_RECVD_PROPS,
858         ZFS_IOC_VDEV_SPLIT,
859         ZFS_IOC_NEXT_OBJ,
860         ZFS_IOC_DIFF,
861         ZFS_IOC_TMP_SNAPSHOT,
862         ZFS_IOC_OBJ_TO_STATS,
863         ZFS_IOC_JAIL,
864         ZFS_IOC_UNJAIL,
865         ZFS_IOC_POOL_REGUID,
866         ZFS_IOC_SPACE_WRITTEN,
867         ZFS_IOC_SPACE_SNAPS,
868         ZFS_IOC_SEND_PROGRESS,
869         ZFS_IOC_POOL_REOPEN,
870         ZFS_IOC_LOG_HISTORY,
871         ZFS_IOC_SEND_NEW,
872         ZFS_IOC_SEND_SPACE,
873         ZFS_IOC_CLONE,
874         ZFS_IOC_BOOKMARK,
875         ZFS_IOC_GET_BOOKMARKS,
876         ZFS_IOC_DESTROY_BOOKMARKS,
877         ZFS_IOC_LAST
878 } zfs_ioc_t;
879
880 /*
881  * Internal SPA load state.  Used by FMA diagnosis engine.
882  */
883 typedef enum {
884         SPA_LOAD_NONE,          /* no load in progress  */
885         SPA_LOAD_OPEN,          /* normal open          */
886         SPA_LOAD_IMPORT,        /* import in progress   */
887         SPA_LOAD_TRYIMPORT,     /* tryimport in progress */
888         SPA_LOAD_RECOVER,       /* recovery requested   */
889         SPA_LOAD_ERROR          /* load failed          */
890 } spa_load_state_t;
891
892 /*
893  * Bookmark name values.
894  */
895 #define ZPOOL_ERR_LIST          "error list"
896 #define ZPOOL_ERR_DATASET       "dataset"
897 #define ZPOOL_ERR_OBJECT        "object"
898
899 #define HIS_MAX_RECORD_LEN      (MAXPATHLEN + MAXPATHLEN + 1)
900
901 /*
902  * The following are names used in the nvlist describing
903  * the pool's history log.
904  */
905 #define ZPOOL_HIST_RECORD       "history record"
906 #define ZPOOL_HIST_TIME         "history time"
907 #define ZPOOL_HIST_CMD          "history command"
908 #define ZPOOL_HIST_WHO          "history who"
909 #define ZPOOL_HIST_ZONE         "history zone"
910 #define ZPOOL_HIST_HOST         "history hostname"
911 #define ZPOOL_HIST_TXG          "history txg"
912 #define ZPOOL_HIST_INT_EVENT    "history internal event"
913 #define ZPOOL_HIST_INT_STR      "history internal str"
914 #define ZPOOL_HIST_INT_NAME     "internal_name"
915 #define ZPOOL_HIST_IOCTL        "ioctl"
916 #define ZPOOL_HIST_INPUT_NVL    "in_nvl"
917 #define ZPOOL_HIST_OUTPUT_NVL   "out_nvl"
918 #define ZPOOL_HIST_DSNAME       "dsname"
919 #define ZPOOL_HIST_DSID         "dsid"
920
921 /*
922  * Flags for ZFS_IOC_VDEV_SET_STATE
923  */
924 #define ZFS_ONLINE_CHECKREMOVE  0x1
925 #define ZFS_ONLINE_UNSPARE      0x2
926 #define ZFS_ONLINE_FORCEFAULT   0x4
927 #define ZFS_ONLINE_EXPAND       0x8
928 #define ZFS_OFFLINE_TEMPORARY   0x1
929
930 /*
931  * Flags for ZFS_IOC_POOL_IMPORT
932  */
933 #define ZFS_IMPORT_NORMAL       0x0
934 #define ZFS_IMPORT_VERBATIM     0x1
935 #define ZFS_IMPORT_ANY_HOST     0x2
936 #define ZFS_IMPORT_MISSING_LOG  0x4
937 #define ZFS_IMPORT_ONLY         0x8
938
939 /*
940  * Sysevent payload members.  ZFS will generate the following sysevents with the
941  * given payloads:
942  *
943  *      ESC_ZFS_RESILVER_START
944  *      ESC_ZFS_RESILVER_END
945  *      ESC_ZFS_POOL_DESTROY
946  *      ESC_ZFS_POOL_REGUID
947  *
948  *              ZFS_EV_POOL_NAME        DATA_TYPE_STRING
949  *              ZFS_EV_POOL_GUID        DATA_TYPE_UINT64
950  *
951  *      ESC_ZFS_VDEV_REMOVE
952  *      ESC_ZFS_VDEV_CLEAR
953  *      ESC_ZFS_VDEV_CHECK
954  *
955  *              ZFS_EV_POOL_NAME        DATA_TYPE_STRING
956  *              ZFS_EV_POOL_GUID        DATA_TYPE_UINT64
957  *              ZFS_EV_VDEV_PATH        DATA_TYPE_STRING        (optional)
958  *              ZFS_EV_VDEV_GUID        DATA_TYPE_UINT64
959  */
960 #define ZFS_EV_POOL_NAME        "pool_name"
961 #define ZFS_EV_POOL_GUID        "pool_guid"
962 #define ZFS_EV_VDEV_PATH        "vdev_path"
963 #define ZFS_EV_VDEV_GUID        "vdev_guid"
964
965 #ifdef  __cplusplus
966 }
967 #endif
968
969 #endif  /* _SYS_FS_ZFS_H */