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 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
32 #include <sys/space_map.h>
33 #include <sys/fs/zfs.h>
39 typedef enum vdev_dtl_type {
40 DTL_MISSING, /* 0% replication: no copies of the data */
41 DTL_PARTIAL, /* less than 100% replication: some copies missing */
42 DTL_SCRUB, /* unable to fully repair during scrub/resilver */
43 DTL_OUTAGE, /* temporarily missing (used to attempt detach) */
47 extern boolean_t zfs_nocacheflush;
49 extern int vdev_open(vdev_t *);
50 extern int vdev_validate(vdev_t *);
51 extern void vdev_close(vdev_t *);
52 extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace);
53 extern void vdev_reopen(vdev_t *);
54 extern int vdev_validate_aux(vdev_t *vd);
55 extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio);
57 extern boolean_t vdev_is_bootable(vdev_t *vd);
58 extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
59 extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
60 extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d,
61 uint64_t txg, uint64_t size);
62 extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d,
63 uint64_t txg, uint64_t size);
64 extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d);
65 extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
67 extern boolean_t vdev_dtl_required(vdev_t *vd);
68 extern boolean_t vdev_resilver_needed(vdev_t *vd,
69 uint64_t *minp, uint64_t *maxp);
71 extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
72 extern void vdev_metaslab_fini(vdev_t *vd);
73 extern void vdev_metaslab_set_size(vdev_t *);
74 extern void vdev_expand(vdev_t *vd, uint64_t txg);
76 extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
77 extern void vdev_clear_stats(vdev_t *vd);
78 extern void vdev_stat_update(zio_t *zio, uint64_t psize);
79 extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type,
81 extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec);
82 extern void vdev_propagate_state(vdev_t *vd);
83 extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state,
86 extern void vdev_space_update(vdev_t *vd, int64_t space_delta,
87 int64_t alloc_delta, boolean_t update_root);
89 extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize);
91 extern int vdev_fault(spa_t *spa, uint64_t guid);
92 extern int vdev_degrade(spa_t *spa, uint64_t guid);
93 extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
95 extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
96 extern void vdev_clear(spa_t *spa, vdev_t *vd);
98 extern boolean_t vdev_is_dead(vdev_t *vd);
99 extern boolean_t vdev_readable(vdev_t *vd);
100 extern boolean_t vdev_writeable(vdev_t *vd);
101 extern boolean_t vdev_allocatable(vdev_t *vd);
102 extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio);
104 extern void vdev_cache_init(vdev_t *vd);
105 extern void vdev_cache_fini(vdev_t *vd);
106 extern int vdev_cache_read(zio_t *zio);
107 extern void vdev_cache_write(zio_t *zio);
108 extern void vdev_cache_purge(vdev_t *vd);
110 extern void vdev_queue_init(vdev_t *vd);
111 extern void vdev_queue_fini(vdev_t *vd);
112 extern zio_t *vdev_queue_io(zio_t *zio);
113 extern void vdev_queue_io_done(zio_t *zio);
115 extern void vdev_config_dirty(vdev_t *vd);
116 extern void vdev_config_clean(vdev_t *vd);
117 extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg,
120 extern void vdev_state_dirty(vdev_t *vd);
121 extern void vdev_state_clean(vdev_t *vd);
123 extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
124 boolean_t getstats, boolean_t isspare, boolean_t isl2cache);
130 extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset);
131 extern int vdev_label_number(uint64_t psise, uint64_t offset);
132 extern nvlist_t *vdev_label_read_config(vdev_t *vd);
133 extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub);
136 VDEV_LABEL_CREATE, /* create/add a new device */
137 VDEV_LABEL_REPLACE, /* replace an existing device */
138 VDEV_LABEL_SPARE, /* add a new hot spare */
139 VDEV_LABEL_REMOVE, /* remove an existing device */
140 VDEV_LABEL_L2CACHE /* add an L2ARC cache device */
143 extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason);
149 #endif /* _SYS_VDEV_H */