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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
31 #include <sys/space_map.h>
32 #include <sys/fs/zfs.h>
38 typedef enum vdev_dtl_type
{
39 DTL_MISSING
, /* 0% replication: no copies of the data */
40 DTL_PARTIAL
, /* less than 100% replication: some copies missing */
41 DTL_SCRUB
, /* unable to fully repair during scrub/resilver */
42 DTL_OUTAGE
, /* temporarily missing (used to attempt detach) */
46 extern boolean_t zfs_nocacheflush
;
48 extern int vdev_open(vdev_t
*);
49 extern void vdev_open_children(vdev_t
*);
50 extern boolean_t
vdev_uses_zvols(vdev_t
*);
51 extern int vdev_validate(vdev_t
*);
52 extern void vdev_close(vdev_t
*);
53 extern int vdev_create(vdev_t
*, uint64_t txg
, boolean_t isreplace
);
54 extern void vdev_reopen(vdev_t
*);
55 extern int vdev_validate_aux(vdev_t
*vd
);
56 extern zio_t
*vdev_probe(vdev_t
*vd
, zio_t
*pio
);
58 extern boolean_t
vdev_is_bootable(vdev_t
*vd
);
59 extern vdev_t
*vdev_lookup_top(spa_t
*spa
, uint64_t vdev
);
60 extern vdev_t
*vdev_lookup_by_guid(vdev_t
*vd
, uint64_t guid
);
61 extern void vdev_dtl_dirty(vdev_t
*vd
, vdev_dtl_type_t d
,
62 uint64_t txg
, uint64_t size
);
63 extern boolean_t
vdev_dtl_contains(vdev_t
*vd
, vdev_dtl_type_t d
,
64 uint64_t txg
, uint64_t size
);
65 extern boolean_t
vdev_dtl_empty(vdev_t
*vd
, vdev_dtl_type_t d
);
66 extern void vdev_dtl_reassess(vdev_t
*vd
, uint64_t txg
, uint64_t scrub_txg
,
68 extern boolean_t
vdev_dtl_required(vdev_t
*vd
);
69 extern boolean_t
vdev_resilver_needed(vdev_t
*vd
,
70 uint64_t *minp
, uint64_t *maxp
);
72 extern void vdev_hold(vdev_t
*);
73 extern void vdev_rele(vdev_t
*);
75 extern int vdev_metaslab_init(vdev_t
*vd
, uint64_t txg
);
76 extern void vdev_metaslab_fini(vdev_t
*vd
);
77 extern void vdev_metaslab_set_size(vdev_t
*);
78 extern void vdev_expand(vdev_t
*vd
, uint64_t txg
);
79 extern void vdev_split(vdev_t
*vd
);
82 extern void vdev_get_stats(vdev_t
*vd
, vdev_stat_t
*vs
);
83 extern void vdev_clear_stats(vdev_t
*vd
);
84 extern void vdev_stat_update(zio_t
*zio
, uint64_t psize
);
85 extern void vdev_scan_stat_init(vdev_t
*vd
);
86 extern void vdev_propagate_state(vdev_t
*vd
);
87 extern void vdev_set_state(vdev_t
*vd
, boolean_t isopen
, vdev_state_t state
,
90 extern void vdev_space_update(vdev_t
*vd
,
91 int64_t alloc_delta
, int64_t defer_delta
, int64_t space_delta
);
93 extern uint64_t vdev_psize_to_asize(vdev_t
*vd
, uint64_t psize
);
95 extern int vdev_fault(spa_t
*spa
, uint64_t guid
, vdev_aux_t aux
);
96 extern int vdev_degrade(spa_t
*spa
, uint64_t guid
, vdev_aux_t aux
);
97 extern int vdev_online(spa_t
*spa
, uint64_t guid
, uint64_t flags
,
99 extern int vdev_offline(spa_t
*spa
, uint64_t guid
, uint64_t flags
);
100 extern void vdev_clear(spa_t
*spa
, vdev_t
*vd
);
102 extern boolean_t
vdev_is_dead(vdev_t
*vd
);
103 extern boolean_t
vdev_readable(vdev_t
*vd
);
104 extern boolean_t
vdev_writeable(vdev_t
*vd
);
105 extern boolean_t
vdev_allocatable(vdev_t
*vd
);
106 extern boolean_t
vdev_accessible(vdev_t
*vd
, zio_t
*zio
);
108 extern void vdev_cache_init(vdev_t
*vd
);
109 extern void vdev_cache_fini(vdev_t
*vd
);
110 extern int vdev_cache_read(zio_t
*zio
);
111 extern void vdev_cache_write(zio_t
*zio
);
112 extern void vdev_cache_purge(vdev_t
*vd
);
114 extern void vdev_queue_init(vdev_t
*vd
);
115 extern void vdev_queue_fini(vdev_t
*vd
);
116 extern zio_t
*vdev_queue_io(zio_t
*zio
);
117 extern void vdev_queue_io_done(zio_t
*zio
);
119 extern void vdev_config_dirty(vdev_t
*vd
);
120 extern void vdev_config_clean(vdev_t
*vd
);
121 extern int vdev_config_sync(vdev_t
**svd
, int svdcount
, uint64_t txg
,
124 extern void vdev_state_dirty(vdev_t
*vd
);
125 extern void vdev_state_clean(vdev_t
*vd
);
127 typedef enum vdev_config_flag
{
128 VDEV_CONFIG_SPARE
= 1 << 0,
129 VDEV_CONFIG_L2CACHE
= 1 << 1,
130 VDEV_CONFIG_REMOVING
= 1 << 2
131 } vdev_config_flag_t
;
133 extern void vdev_top_config_generate(spa_t
*spa
, nvlist_t
*config
);
134 extern nvlist_t
*vdev_config_generate(spa_t
*spa
, vdev_t
*vd
,
135 boolean_t getstats
, vdev_config_flag_t flags
);
141 extern uint64_t vdev_label_offset(uint64_t psize
, int l
, uint64_t offset
);
142 extern int vdev_label_number(uint64_t psise
, uint64_t offset
);
143 extern nvlist_t
*vdev_label_read_config(vdev_t
*vd
);
144 extern void vdev_uberblock_load(zio_t
*zio
, vdev_t
*vd
, struct uberblock
*ub
);
147 VDEV_LABEL_CREATE
, /* create/add a new device */
148 VDEV_LABEL_REPLACE
, /* replace an existing device */
149 VDEV_LABEL_SPARE
, /* add a new hot spare */
150 VDEV_LABEL_REMOVE
, /* remove an existing device */
151 VDEV_LABEL_L2CACHE
, /* add an L2ARC cache device */
152 VDEV_LABEL_SPLIT
/* generating new label for split-off dev */
155 extern int vdev_label_init(vdev_t
*vd
, uint64_t txg
, vdev_labeltype_t reason
);
161 #endif /* _SYS_VDEV_H */