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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, 2017 by Delphix. All rights reserved. | |
25 | * Copyright (c) 2017, Intel Corporation. | |
26 | */ | |
27 | ||
28 | #ifndef _SYS_VDEV_H | |
29 | #define _SYS_VDEV_H | |
30 | ||
31 | #include <sys/spa.h> | |
32 | #include <sys/zio.h> | |
33 | #include <sys/dmu.h> | |
34 | #include <sys/space_map.h> | |
35 | #include <sys/fs/zfs.h> | |
36 | ||
37 | #ifdef __cplusplus | |
38 | extern "C" { | |
39 | #endif | |
40 | ||
41 | typedef enum vdev_dtl_type { | |
42 | DTL_MISSING, /* 0% replication: no copies of the data */ | |
43 | DTL_PARTIAL, /* less than 100% replication: some copies missing */ | |
44 | DTL_SCRUB, /* unable to fully repair during scrub/resilver */ | |
45 | DTL_OUTAGE, /* temporarily missing (used to attempt detach) */ | |
46 | DTL_TYPES | |
47 | } vdev_dtl_type_t; | |
48 | ||
49 | extern int zfs_nocacheflush; | |
50 | ||
51 | extern void vdev_dbgmsg(vdev_t *vd, const char *fmt, ...); | |
52 | extern void vdev_dbgmsg_print_tree(vdev_t *, int); | |
53 | extern int vdev_open(vdev_t *); | |
54 | extern void vdev_open_children(vdev_t *); | |
55 | extern int vdev_validate(vdev_t *); | |
56 | extern int vdev_copy_path_strict(vdev_t *, vdev_t *); | |
57 | extern void vdev_copy_path_relaxed(vdev_t *, vdev_t *); | |
58 | extern void vdev_close(vdev_t *); | |
59 | extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); | |
60 | extern void vdev_reopen(vdev_t *); | |
61 | extern int vdev_validate_aux(vdev_t *vd); | |
62 | extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio); | |
63 | extern boolean_t vdev_is_concrete(vdev_t *vd); | |
64 | extern boolean_t vdev_is_bootable(vdev_t *vd); | |
65 | extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); | |
66 | extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); | |
67 | extern int vdev_count_leaves(spa_t *spa); | |
68 | extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d, | |
69 | uint64_t txg, uint64_t size); | |
70 | extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d, | |
71 | uint64_t txg, uint64_t size); | |
72 | extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d); | |
73 | extern boolean_t vdev_dtl_need_resilver(vdev_t *vd, uint64_t off, size_t size); | |
74 | extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, | |
75 | int scrub_done); | |
76 | extern boolean_t vdev_dtl_required(vdev_t *vd); | |
77 | extern boolean_t vdev_resilver_needed(vdev_t *vd, | |
78 | uint64_t *minp, uint64_t *maxp); | |
79 | extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, | |
80 | dmu_tx_t *tx); | |
81 | extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx); | |
82 | extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx); | |
83 | extern void vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx); | |
84 | extern void vdev_indirect_mark_obsolete(vdev_t *vd, uint64_t offset, | |
85 | uint64_t size); | |
86 | extern void spa_vdev_indirect_mark_obsolete(spa_t *spa, uint64_t vdev, | |
87 | uint64_t offset, uint64_t size, dmu_tx_t *tx); | |
88 | ||
89 | extern void vdev_hold(vdev_t *); | |
90 | extern void vdev_rele(vdev_t *); | |
91 | ||
92 | extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); | |
93 | extern void vdev_metaslab_fini(vdev_t *vd); | |
94 | extern void vdev_metaslab_set_size(vdev_t *); | |
95 | extern void vdev_expand(vdev_t *vd, uint64_t txg); | |
96 | extern void vdev_split(vdev_t *vd); | |
97 | extern void vdev_deadman(vdev_t *vd, char *tag); | |
98 | ||
99 | extern void vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx); | |
100 | extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); | |
101 | extern void vdev_clear_stats(vdev_t *vd); | |
102 | extern void vdev_stat_update(zio_t *zio, uint64_t psize); | |
103 | extern void vdev_scan_stat_init(vdev_t *vd); | |
104 | extern void vdev_propagate_state(vdev_t *vd); | |
105 | extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, | |
106 | vdev_aux_t aux); | |
107 | extern boolean_t vdev_children_are_offline(vdev_t *vd); | |
108 | ||
109 | extern void vdev_space_update(vdev_t *vd, | |
110 | int64_t alloc_delta, int64_t defer_delta, int64_t space_delta); | |
111 | ||
112 | extern int64_t vdev_deflated_space(vdev_t *vd, int64_t space); | |
113 | ||
114 | extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); | |
115 | ||
116 | extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux); | |
117 | extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux); | |
118 | extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, | |
119 | vdev_state_t *); | |
120 | extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); | |
121 | extern void vdev_clear(spa_t *spa, vdev_t *vd); | |
122 | ||
123 | extern boolean_t vdev_is_dead(vdev_t *vd); | |
124 | extern boolean_t vdev_readable(vdev_t *vd); | |
125 | extern boolean_t vdev_writeable(vdev_t *vd); | |
126 | extern boolean_t vdev_allocatable(vdev_t *vd); | |
127 | extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio); | |
128 | extern boolean_t vdev_is_spacemap_addressable(vdev_t *vd); | |
129 | ||
130 | extern void vdev_cache_init(vdev_t *vd); | |
131 | extern void vdev_cache_fini(vdev_t *vd); | |
132 | extern boolean_t vdev_cache_read(zio_t *zio); | |
133 | extern void vdev_cache_write(zio_t *zio); | |
134 | extern void vdev_cache_purge(vdev_t *vd); | |
135 | ||
136 | extern void vdev_queue_init(vdev_t *vd); | |
137 | extern void vdev_queue_fini(vdev_t *vd); | |
138 | extern zio_t *vdev_queue_io(zio_t *zio); | |
139 | extern void vdev_queue_io_done(zio_t *zio); | |
140 | extern void vdev_queue_change_io_priority(zio_t *zio, zio_priority_t priority); | |
141 | ||
142 | extern int vdev_queue_length(vdev_t *vd); | |
143 | extern uint64_t vdev_queue_last_offset(vdev_t *vd); | |
144 | ||
145 | extern void vdev_config_dirty(vdev_t *vd); | |
146 | extern void vdev_config_clean(vdev_t *vd); | |
147 | extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); | |
148 | ||
149 | extern void vdev_state_dirty(vdev_t *vd); | |
150 | extern void vdev_state_clean(vdev_t *vd); | |
151 | ||
152 | extern void vdev_set_deferred_resilver(spa_t *spa, vdev_t *vd); | |
153 | ||
154 | typedef enum vdev_config_flag { | |
155 | VDEV_CONFIG_SPARE = 1 << 0, | |
156 | VDEV_CONFIG_L2CACHE = 1 << 1, | |
157 | VDEV_CONFIG_REMOVING = 1 << 2, | |
158 | VDEV_CONFIG_MOS = 1 << 3, | |
159 | VDEV_CONFIG_MISSING = 1 << 4 | |
160 | } vdev_config_flag_t; | |
161 | ||
162 | extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config); | |
163 | extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, | |
164 | boolean_t getstats, vdev_config_flag_t flags); | |
165 | ||
166 | /* | |
167 | * Label routines | |
168 | */ | |
169 | struct uberblock; | |
170 | extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); | |
171 | extern int vdev_label_number(uint64_t psise, uint64_t offset); | |
172 | extern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg); | |
173 | extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **); | |
174 | extern void vdev_config_generate_stats(vdev_t *vd, nvlist_t *nv); | |
175 | extern void vdev_label_write(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t | |
176 | offset, uint64_t size, zio_done_func_t *done, void *private, int flags); | |
177 | ||
178 | typedef enum { | |
179 | VDEV_LABEL_CREATE, /* create/add a new device */ | |
180 | VDEV_LABEL_REPLACE, /* replace an existing device */ | |
181 | VDEV_LABEL_SPARE, /* add a new hot spare */ | |
182 | VDEV_LABEL_REMOVE, /* remove an existing device */ | |
183 | VDEV_LABEL_L2CACHE, /* add an L2ARC cache device */ | |
184 | VDEV_LABEL_SPLIT /* generating new label for split-off dev */ | |
185 | } vdev_labeltype_t; | |
186 | ||
187 | extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); | |
188 | ||
189 | #ifdef __cplusplus | |
190 | } | |
191 | #endif | |
192 | ||
193 | #endif /* _SYS_VDEV_H */ |