4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
29 #pragma ident "%Z%%M% %I% %E% SMI"
31 #include <sys/types.h>
32 #include <sys/ioccom.h>
39 * Types and constants shared between userland and the kernel.
43 * Each dataset can be one of the following types. These constants can be
44 * combined into masks that can be passed to various functions.
47 ZFS_TYPE_FILESYSTEM = 0x1,
48 ZFS_TYPE_SNAPSHOT = 0x2,
49 ZFS_TYPE_VOLUME = 0x4,
53 #define ZFS_TYPE_ANY \
54 (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT)
57 * Properties are identified by these constants and must be added to the
58 * end of this list to ensure that external conumsers are not affected
59 * by the change. The property list also determines how 'zfs get' will
60 * display them. If you make any changes to this list, be sure to update
61 * the property table in usr/src/common/zfs/zfs_prop.c.
71 ZFS_PROP_COMPRESSRATIO,
77 ZFS_PROP_VOLBLOCKSIZE,
92 ZFS_PROP_CREATETXG, /* not exposed to the user */
93 ZFS_PROP_NAME, /* not exposed to the user */
96 ZFS_PROP_ISCSIOPTIONS, /* not exposed to the user */
98 ZFS_PROP_NUMCLONES, /* not exposed to the user */
103 typedef zfs_prop_t zpool_prop_t;
105 #define ZFS_PROP_VALUE "value"
106 #define ZFS_PROP_SOURCE "source"
110 ZFS_SRC_DEFAULT = 0x2,
111 ZFS_SRC_TEMPORARY = 0x4,
113 ZFS_SRC_INHERITED = 0x10
116 #define ZFS_SRC_ALL 0x1f
119 * The following functions are shared between libzfs and the kernel.
121 zfs_prop_t zfs_name_to_prop(const char *);
122 zpool_prop_t zpool_name_to_prop(const char *);
123 boolean_t zfs_prop_user(const char *);
124 int zfs_prop_readonly(zfs_prop_t);
125 const char *zfs_prop_default_string(zfs_prop_t);
126 const char *zfs_prop_to_name(zfs_prop_t);
127 const char *zpool_prop_to_name(zfs_prop_t);
128 uint64_t zfs_prop_default_numeric(zfs_prop_t);
129 int zfs_prop_inheritable(zfs_prop_t);
130 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *);
131 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);
136 typedef zfs_prop_t (*zfs_prop_f)(zfs_prop_t, void *);
137 typedef zfs_prop_f zpool_prop_f;
138 extern zfs_prop_t zfs_prop_iter(zfs_prop_f, void *, boolean_t);
139 extern zpool_prop_t zpool_prop_iter(zpool_prop_f, void *, boolean_t);
142 * On-disk version number.
144 #define ZFS_VERSION_1 1ULL
145 #define ZFS_VERSION_2 2ULL
146 #define ZFS_VERSION_3 3ULL
147 #define ZFS_VERSION_4 4ULL
148 #define ZFS_VERSION_5 5ULL
149 #define ZFS_VERSION_6 6ULL
151 * When bumping up ZFS_VERSION, make sure GRUB ZFS understand the on-disk
152 * format change. Go to usr/src/grub/grub-0.95/stage2/{zfs-include/, fsys_zfs*},
153 * and do the appropriate changes.
155 #define ZFS_VERSION ZFS_VERSION_6
156 #define ZFS_VERSION_STRING "6"
159 * Symbolic names for the changes that caused a ZFS_VERSION switch.
160 * Used in the code when checking for presence or absence of a feature.
161 * Feel free to define multiple symbolic names for each version if there
162 * were multiple changes to on-disk structures during that version.
164 * NOTE: When checking the current ZFS_VERSION in your code, be sure
165 * to use spa_version() since it reports the version of the
166 * last synced uberblock. Checking the in-flight version can
167 * be dangerous in some cases.
169 #define ZFS_VERSION_INITIAL ZFS_VERSION_1
170 #define ZFS_VERSION_DITTO_BLOCKS ZFS_VERSION_2
171 #define ZFS_VERSION_SPARES ZFS_VERSION_3
172 #define ZFS_VERSION_RAID6 ZFS_VERSION_3
173 #define ZFS_VERSION_BPLIST_ACCOUNT ZFS_VERSION_3
174 #define ZFS_VERSION_RAIDZ_DEFLATE ZFS_VERSION_3
175 #define ZFS_VERSION_DNODE_BYTES ZFS_VERSION_3
176 #define ZFS_VERSION_ZPOOL_HISTORY ZFS_VERSION_4
177 #define ZFS_VERSION_GZIP_COMPRESSION ZFS_VERSION_5
178 #define ZFS_VERSION_BOOTFS ZFS_VERSION_6
181 * The following are configuration names used in the nvlist describing a pool's
184 #define ZPOOL_CONFIG_VERSION "version"
185 #define ZPOOL_CONFIG_POOL_NAME "name"
186 #define ZPOOL_CONFIG_POOL_STATE "state"
187 #define ZPOOL_CONFIG_POOL_TXG "txg"
188 #define ZPOOL_CONFIG_POOL_GUID "pool_guid"
189 #define ZPOOL_CONFIG_CREATE_TXG "create_txg"
190 #define ZPOOL_CONFIG_TOP_GUID "top_guid"
191 #define ZPOOL_CONFIG_VDEV_TREE "vdev_tree"
192 #define ZPOOL_CONFIG_TYPE "type"
193 #define ZPOOL_CONFIG_CHILDREN "children"
194 #define ZPOOL_CONFIG_ID "id"
195 #define ZPOOL_CONFIG_GUID "guid"
196 #define ZPOOL_CONFIG_PATH "path"
197 #define ZPOOL_CONFIG_DEVID "devid"
198 #define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array"
199 #define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift"
200 #define ZPOOL_CONFIG_ASHIFT "ashift"
201 #define ZPOOL_CONFIG_ASIZE "asize"
202 #define ZPOOL_CONFIG_DTL "DTL"
203 #define ZPOOL_CONFIG_STATS "stats"
204 #define ZPOOL_CONFIG_WHOLE_DISK "whole_disk"
205 #define ZPOOL_CONFIG_OFFLINE "offline"
206 #define ZPOOL_CONFIG_ERRCOUNT "error_count"
207 #define ZPOOL_CONFIG_NOT_PRESENT "not_present"
208 #define ZPOOL_CONFIG_SPARES "spares"
209 #define ZPOOL_CONFIG_IS_SPARE "is_spare"
210 #define ZPOOL_CONFIG_NPARITY "nparity"
211 #define ZPOOL_CONFIG_HOSTID "hostid"
212 #define ZPOOL_CONFIG_HOSTNAME "hostname"
213 #define ZPOOL_CONFIG_TIMESTAMP "timestamp" /* not stored on disk */
215 #define VDEV_TYPE_ROOT "root"
216 #define VDEV_TYPE_MIRROR "mirror"
217 #define VDEV_TYPE_REPLACING "replacing"
218 #define VDEV_TYPE_RAIDZ "raidz"
219 #define VDEV_TYPE_DISK "disk"
220 #define VDEV_TYPE_FILE "file"
221 #define VDEV_TYPE_MISSING "missing"
222 #define VDEV_TYPE_SPARE "spare"
225 * This is needed in userland to report the minimum necessary device size.
227 #define SPA_MINDEVSIZE (64ULL << 20)
230 * The location of the pool configuration repository, shared between kernel and
233 #define ZPOOL_CACHE_DIR "/boot/zfs"
234 #define ZPOOL_CACHE_FILE "zpool.cache"
235 #define ZPOOL_CACHE_TMP ".zpool.cache"
237 #define ZPOOL_CACHE ZPOOL_CACHE_DIR "/" ZPOOL_CACHE_FILE
240 * vdev states are ordered from least to most healthy.
241 * A vdev that's CANT_OPEN or below is considered unusable.
243 typedef enum vdev_state {
244 VDEV_STATE_UNKNOWN = 0, /* Uninitialized vdev */
245 VDEV_STATE_CLOSED, /* Not currently open */
246 VDEV_STATE_OFFLINE, /* Not allowed to open */
247 VDEV_STATE_CANT_OPEN, /* Tried to open, but failed */
248 VDEV_STATE_DEGRADED, /* Replicated vdev with unhealthy kids */
249 VDEV_STATE_HEALTHY /* Presumed good */
253 * vdev aux states. When a vdev is in the CANT_OPEN state, the aux field
254 * of the vdev stats structure uses these constants to distinguish why.
256 typedef enum vdev_aux {
257 VDEV_AUX_NONE, /* no error */
258 VDEV_AUX_OPEN_FAILED, /* ldi_open_*() or vn_open() failed */
259 VDEV_AUX_CORRUPT_DATA, /* bad label or disk contents */
260 VDEV_AUX_NO_REPLICAS, /* insufficient number of replicas */
261 VDEV_AUX_BAD_GUID_SUM, /* vdev guid sum doesn't match */
262 VDEV_AUX_TOO_SMALL, /* vdev size is too small */
263 VDEV_AUX_BAD_LABEL, /* the label is OK but invalid */
264 VDEV_AUX_VERSION_NEWER, /* on-disk version is too new */
265 VDEV_AUX_VERSION_OLDER, /* on-disk version is too old */
266 VDEV_AUX_SPARED /* hot spare used in another pool */
270 * pool state. The following states are written to disk as part of the normal
271 * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE. The remaining states are
272 * software abstractions used at various levels to communicate pool state.
274 typedef enum pool_state {
275 POOL_STATE_ACTIVE = 0, /* In active use */
276 POOL_STATE_EXPORTED, /* Explicitly exported */
277 POOL_STATE_DESTROYED, /* Explicitly destroyed */
278 POOL_STATE_SPARE, /* Reserved for hot spare use */
279 POOL_STATE_UNINITIALIZED, /* Internal spa_t state */
280 POOL_STATE_UNAVAIL, /* Internal libzfs state */
281 POOL_STATE_POTENTIALLY_ACTIVE /* Internal libzfs state */
287 typedef enum pool_scrub_type {
290 POOL_SCRUB_EVERYTHING,
295 * ZIO types. Needed to interpret vdev statistics below.
297 typedef enum zio_type {
308 * Vdev statistics. Note: all fields should be 64-bit because this
309 * is passed between kernel and userland as an nvlist uint64 array.
311 typedef struct vdev_stat {
312 hrtime_t vs_timestamp; /* time since vdev load */
313 uint64_t vs_state; /* vdev state */
314 uint64_t vs_aux; /* see vdev_aux_t */
315 uint64_t vs_alloc; /* space allocated */
316 uint64_t vs_space; /* total capacity */
317 uint64_t vs_dspace; /* deflated capacity */
318 uint64_t vs_rsize; /* replaceable dev size */
319 uint64_t vs_ops[ZIO_TYPES]; /* operation count */
320 uint64_t vs_bytes[ZIO_TYPES]; /* bytes read/written */
321 uint64_t vs_read_errors; /* read errors */
322 uint64_t vs_write_errors; /* write errors */
323 uint64_t vs_checksum_errors; /* checksum errors */
324 uint64_t vs_self_healed; /* self-healed bytes */
325 uint64_t vs_scrub_type; /* pool_scrub_type_t */
326 uint64_t vs_scrub_complete; /* completed? */
327 uint64_t vs_scrub_examined; /* bytes examined; top */
328 uint64_t vs_scrub_repaired; /* bytes repaired; leaf */
329 uint64_t vs_scrub_errors; /* errors during scrub */
330 uint64_t vs_scrub_start; /* UTC scrub start time */
331 uint64_t vs_scrub_end; /* UTC scrub end time */
334 #define ZFS_DRIVER "zfs"
335 #define ZFS_DEV_NAME "zfs"
336 #define ZFS_DEV "/dev/" ZFS_DEV_NAME
339 * zvol paths. Irritatingly, the devfsadm interfaces want all these
340 * paths without the /dev prefix, but for some things, we want the
341 * /dev prefix. Below are the names without /dev.
343 #define ZVOL_DEV_DIR "zvol"
346 * And here are the things we need with /dev, etc. in front of them.
348 #define ZVOL_PSEUDO_DEV "/devices/pseudo/zvol@0:"
349 #define ZVOL_FULL_DEV_DIR "/dev/" ZVOL_DEV_DIR
351 #define ZVOL_PROP_NAME "name"
354 * /dev/zfs ioctl numbers.
356 typedef unsigned long zfs_ioc_t;
358 #define ZFS_IOC(ioreq) ((ioreq) & 0xff)
360 #define ZFS_IOC_POOL_CREATE _IOWR('Z', 0, struct zfs_cmd)
361 #define ZFS_IOC_POOL_DESTROY _IOWR('Z', 1, struct zfs_cmd)
362 #define ZFS_IOC_POOL_IMPORT _IOWR('Z', 2, struct zfs_cmd)
363 #define ZFS_IOC_POOL_EXPORT _IOWR('Z', 3, struct zfs_cmd)
364 #define ZFS_IOC_POOL_CONFIGS _IOWR('Z', 4, struct zfs_cmd)
365 #define ZFS_IOC_POOL_STATS _IOWR('Z', 5, struct zfs_cmd)
366 #define ZFS_IOC_POOL_TRYIMPORT _IOWR('Z', 6, struct zfs_cmd)
367 #define ZFS_IOC_POOL_SCRUB _IOWR('Z', 7, struct zfs_cmd)
368 #define ZFS_IOC_POOL_FREEZE _IOWR('Z', 8, struct zfs_cmd)
369 #define ZFS_IOC_POOL_UPGRADE _IOWR('Z', 9, struct zfs_cmd)
370 #define ZFS_IOC_POOL_GET_HISTORY _IOWR('Z', 10, struct zfs_cmd)
371 #define ZFS_IOC_POOL_LOG_HISTORY _IOWR('Z', 11, struct zfs_cmd)
372 #define ZFS_IOC_VDEV_ADD _IOWR('Z', 12, struct zfs_cmd)
373 #define ZFS_IOC_VDEV_REMOVE _IOWR('Z', 13, struct zfs_cmd)
374 #define ZFS_IOC_VDEV_ONLINE _IOWR('Z', 14, struct zfs_cmd)
375 #define ZFS_IOC_VDEV_OFFLINE _IOWR('Z', 15, struct zfs_cmd)
376 #define ZFS_IOC_VDEV_ATTACH _IOWR('Z', 16, struct zfs_cmd)
377 #define ZFS_IOC_VDEV_DETACH _IOWR('Z', 17, struct zfs_cmd)
378 #define ZFS_IOC_VDEV_SETPATH _IOWR('Z', 18, struct zfs_cmd)
379 #define ZFS_IOC_OBJSET_STATS _IOWR('Z', 19, struct zfs_cmd)
380 #define ZFS_IOC_DATASET_LIST_NEXT _IOWR('Z', 20, struct zfs_cmd)
381 #define ZFS_IOC_SNAPSHOT_LIST_NEXT _IOWR('Z', 21, struct zfs_cmd)
382 #define ZFS_IOC_SET_PROP _IOWR('Z', 22, struct zfs_cmd)
383 #define ZFS_IOC_CREATE_MINOR _IOWR('Z', 23, struct zfs_cmd)
384 #define ZFS_IOC_REMOVE_MINOR _IOWR('Z', 24, struct zfs_cmd)
385 #define ZFS_IOC_CREATE _IOWR('Z', 25, struct zfs_cmd)
386 #define ZFS_IOC_DESTROY _IOWR('Z', 26, struct zfs_cmd)
387 #define ZFS_IOC_ROLLBACK _IOWR('Z', 27, struct zfs_cmd)
388 #define ZFS_IOC_RENAME _IOWR('Z', 28, struct zfs_cmd)
389 #define ZFS_IOC_RECVBACKUP _IOWR('Z', 29, struct zfs_cmd)
390 #define ZFS_IOC_SENDBACKUP _IOWR('Z', 30, struct zfs_cmd)
391 #define ZFS_IOC_INJECT_FAULT _IOWR('Z', 31, struct zfs_cmd)
392 #define ZFS_IOC_CLEAR_FAULT _IOWR('Z', 32, struct zfs_cmd)
393 #define ZFS_IOC_INJECT_LIST_NEXT _IOWR('Z', 33, struct zfs_cmd)
394 #define ZFS_IOC_ERROR_LOG _IOWR('Z', 34, struct zfs_cmd)
395 #define ZFS_IOC_CLEAR _IOWR('Z', 35, struct zfs_cmd)
396 #define ZFS_IOC_PROMOTE _IOWR('Z', 36, struct zfs_cmd)
397 #define ZFS_IOC_DESTROY_SNAPS _IOWR('Z', 37, struct zfs_cmd)
398 #define ZFS_IOC_SNAPSHOT _IOWR('Z', 38, struct zfs_cmd)
399 #define ZFS_IOC_DSOBJ_TO_DSNAME _IOWR('Z', 39, struct zfs_cmd)
400 #define ZFS_IOC_OBJ_TO_PATH _IOWR('Z', 40, struct zfs_cmd)
401 #define ZFS_IOC_POOL_SET_PROPS _IOWR('Z', 41, struct zfs_cmd)
402 #define ZFS_IOC_POOL_GET_PROPS _IOWR('Z', 42, struct zfs_cmd)
403 #define ZFS_IOC_JAIL _IOWR('Z', 43, struct zfs_cmd)
404 #define ZFS_IOC_UNJAIL _IOWR('Z', 44, struct zfs_cmd)
407 * Internal SPA load state. Used by FMA diagnosis engine.
410 SPA_LOAD_NONE, /* no load in progress */
411 SPA_LOAD_OPEN, /* normal open */
412 SPA_LOAD_IMPORT, /* import in progress */
413 SPA_LOAD_TRYIMPORT /* tryimport in progress */
417 * Bookmark name values.
419 #define ZPOOL_ERR_LIST "error list"
420 #define ZPOOL_ERR_DATASET "dataset"
421 #define ZPOOL_ERR_OBJECT "object"
423 #define HIS_MAX_RECORD_LEN (MAXPATHLEN + MAXPATHLEN + 1)
426 * The following are names used in the nvlist describing
427 * the pool's history log.
429 #define ZPOOL_HIST_RECORD "history record"
430 #define ZPOOL_HIST_TIME "history time"
431 #define ZPOOL_HIST_CMD "history command"
437 #endif /* _SYS_FS_ZFS_H */