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34dc7c2f BB |
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 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
34dc7c2f BB |
23 | */ |
24 | ||
25 | #ifndef _SYS_VDEV_H | |
26 | #define _SYS_VDEV_H | |
27 | ||
34dc7c2f BB |
28 | #include <sys/spa.h> |
29 | #include <sys/zio.h> | |
30 | #include <sys/dmu.h> | |
31 | #include <sys/space_map.h> | |
32 | #include <sys/fs/zfs.h> | |
33 | ||
34 | #ifdef __cplusplus | |
35 | extern "C" { | |
36 | #endif | |
37 | ||
fb5f0bc8 BB |
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) */ | |
43 | DTL_TYPES | |
44 | } vdev_dtl_type_t; | |
45 | ||
c409e464 | 46 | extern int zfs_nocacheflush; |
34dc7c2f | 47 | |
34dc7c2f | 48 | extern int vdev_open(vdev_t *); |
428870ff BB |
49 | extern void vdev_open_children(vdev_t *); |
50 | extern boolean_t vdev_uses_zvols(vdev_t *); | |
34dc7c2f BB |
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); | |
34dc7c2f BB |
54 | extern void vdev_reopen(vdev_t *); |
55 | extern int vdev_validate_aux(vdev_t *vd); | |
b128c09f | 56 | extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio); |
34dc7c2f | 57 | |
b128c09f | 58 | extern boolean_t vdev_is_bootable(vdev_t *vd); |
34dc7c2f BB |
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); | |
fb5f0bc8 BB |
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); | |
34dc7c2f BB |
66 | extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, |
67 | int scrub_done); | |
fb5f0bc8 | 68 | extern boolean_t vdev_dtl_required(vdev_t *vd); |
b128c09f BB |
69 | extern boolean_t vdev_resilver_needed(vdev_t *vd, |
70 | uint64_t *minp, uint64_t *maxp); | |
34dc7c2f | 71 | |
428870ff BB |
72 | extern void vdev_hold(vdev_t *); |
73 | extern void vdev_rele(vdev_t *); | |
74 | ||
34dc7c2f BB |
75 | extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); |
76 | extern void vdev_metaslab_fini(vdev_t *vd); | |
9babb374 BB |
77 | extern void vdev_metaslab_set_size(vdev_t *); |
78 | extern void vdev_expand(vdev_t *vd, uint64_t txg); | |
428870ff BB |
79 | extern void vdev_split(vdev_t *vd); |
80 | ||
34dc7c2f BB |
81 | |
82 | extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); | |
83 | extern void vdev_clear_stats(vdev_t *vd); | |
b128c09f | 84 | extern void vdev_stat_update(zio_t *zio, uint64_t psize); |
428870ff | 85 | extern void vdev_scan_stat_init(vdev_t *vd); |
34dc7c2f BB |
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, | |
88 | vdev_aux_t aux); | |
89 | ||
428870ff BB |
90 | extern void vdev_space_update(vdev_t *vd, |
91 | int64_t alloc_delta, int64_t defer_delta, int64_t space_delta); | |
34dc7c2f BB |
92 | |
93 | extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); | |
94 | ||
428870ff BB |
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); | |
34dc7c2f BB |
97 | extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, |
98 | vdev_state_t *); | |
99 | extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); | |
b128c09f | 100 | extern void vdev_clear(spa_t *spa, vdev_t *vd); |
34dc7c2f | 101 | |
b128c09f BB |
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); | |
34dc7c2f BB |
107 | |
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); | |
113 | ||
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); | |
118 | ||
119 | extern void vdev_config_dirty(vdev_t *vd); | |
120 | extern void vdev_config_clean(vdev_t *vd); | |
9babb374 BB |
121 | extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg, |
122 | boolean_t); | |
34dc7c2f | 123 | |
b128c09f BB |
124 | extern void vdev_state_dirty(vdev_t *vd); |
125 | extern void vdev_state_clean(vdev_t *vd); | |
126 | ||
428870ff BB |
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; | |
132 | ||
133 | extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config); | |
34dc7c2f | 134 | extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, |
428870ff | 135 | boolean_t getstats, vdev_config_flag_t flags); |
34dc7c2f BB |
136 | |
137 | /* | |
138 | * Label routines | |
139 | */ | |
140 | struct uberblock; | |
141 | extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); | |
b128c09f | 142 | extern int vdev_label_number(uint64_t psise, uint64_t offset); |
34dc7c2f BB |
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); | |
145 | ||
146 | typedef enum { | |
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 */ | |
428870ff BB |
151 | VDEV_LABEL_L2CACHE, /* add an L2ARC cache device */ |
152 | VDEV_LABEL_SPLIT /* generating new label for split-off dev */ | |
34dc7c2f BB |
153 | } vdev_labeltype_t; |
154 | ||
155 | extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); | |
156 | ||
157 | #ifdef __cplusplus | |
158 | } | |
159 | #endif | |
160 | ||
161 | #endif /* _SYS_VDEV_H */ |