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]
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011, 2020 by Delphix. All rights reserved.
25 * Copyright (c) 2017, Intel Corporation.
26 * Copyright (c) 2019, Datto Inc. All rights reserved.
35 #include <sys/space_map.h>
36 #include <sys/fs/zfs.h>
42 typedef enum vdev_dtl_type {
43 DTL_MISSING, /* 0% replication: no copies of the data */
44 DTL_PARTIAL, /* less than 100% replication: some copies missing */
45 DTL_SCRUB, /* unable to fully repair during scrub/resilver */
46 DTL_OUTAGE, /* temporarily missing (used to attempt detach) */
50 extern int zfs_nocacheflush;
52 extern void vdev_dbgmsg(vdev_t *vd, const char *fmt, ...);
53 extern void vdev_dbgmsg_print_tree(vdev_t *, int);
54 extern int vdev_open(vdev_t *);
55 extern void vdev_open_children(vdev_t *);
56 extern int vdev_validate(vdev_t *);
57 extern int vdev_copy_path_strict(vdev_t *, vdev_t *);
58 extern void vdev_copy_path_relaxed(vdev_t *, vdev_t *);
59 extern void vdev_close(vdev_t *);
60 extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace);
61 extern void vdev_reopen(vdev_t *);
62 extern int vdev_validate_aux(vdev_t *vd);
63 extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio);
64 extern boolean_t vdev_is_concrete(vdev_t *vd);
65 extern boolean_t vdev_is_bootable(vdev_t *vd);
66 extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
67 extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
68 extern int vdev_count_leaves(spa_t *spa);
69 extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d,
70 uint64_t txg, uint64_t size);
71 extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d,
72 uint64_t txg, uint64_t size);
73 extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d);
74 extern boolean_t vdev_dtl_need_resilver(vdev_t *vd, uint64_t off, size_t size);
75 extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
76 boolean_t scrub_done, boolean_t rebuild_done);
77 extern boolean_t vdev_dtl_required(vdev_t *vd);
78 extern boolean_t vdev_resilver_needed(vdev_t *vd,
79 uint64_t *minp, uint64_t *maxp);
80 extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj,
82 extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx);
83 extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx);
84 extern void vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx);
85 extern void vdev_indirect_mark_obsolete(vdev_t *vd, uint64_t offset,
87 extern void spa_vdev_indirect_mark_obsolete(spa_t *spa, uint64_t vdev,
88 uint64_t offset, uint64_t size, dmu_tx_t *tx);
89 extern boolean_t vdev_replace_in_progress(vdev_t *vdev);
91 extern void vdev_hold(vdev_t *);
92 extern void vdev_rele(vdev_t *);
94 extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
95 extern void vdev_metaslab_fini(vdev_t *vd);
96 extern void vdev_metaslab_set_size(vdev_t *);
97 extern void vdev_ashift_optimize(vdev_t *);
98 extern void vdev_expand(vdev_t *vd, uint64_t txg);
99 extern void vdev_split(vdev_t *vd);
100 extern void vdev_deadman(vdev_t *vd, char *tag);
101 extern void vdev_xlate(vdev_t *vd, const range_seg64_t *logical_rs,
102 range_seg64_t *physical_rs);
104 extern void vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx);
105 extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
106 extern void vdev_clear_stats(vdev_t *vd);
107 extern void vdev_stat_update(zio_t *zio, uint64_t psize);
108 extern void vdev_scan_stat_init(vdev_t *vd);
109 extern void vdev_propagate_state(vdev_t *vd);
110 extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state,
112 extern boolean_t vdev_children_are_offline(vdev_t *vd);
114 extern void vdev_space_update(vdev_t *vd,
115 int64_t alloc_delta, int64_t defer_delta, int64_t space_delta);
117 extern int64_t vdev_deflated_space(vdev_t *vd, int64_t space);
119 extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize);
121 extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux);
122 extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux);
123 extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
125 extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
126 extern void vdev_clear(spa_t *spa, vdev_t *vd);
128 extern boolean_t vdev_is_dead(vdev_t *vd);
129 extern boolean_t vdev_readable(vdev_t *vd);
130 extern boolean_t vdev_writeable(vdev_t *vd);
131 extern boolean_t vdev_allocatable(vdev_t *vd);
132 extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio);
133 extern boolean_t vdev_is_spacemap_addressable(vdev_t *vd);
135 extern void vdev_cache_init(vdev_t *vd);
136 extern void vdev_cache_fini(vdev_t *vd);
137 extern boolean_t vdev_cache_read(zio_t *zio);
138 extern void vdev_cache_write(zio_t *zio);
139 extern void vdev_cache_purge(vdev_t *vd);
141 extern void vdev_queue_init(vdev_t *vd);
142 extern void vdev_queue_fini(vdev_t *vd);
143 extern zio_t *vdev_queue_io(zio_t *zio);
144 extern void vdev_queue_io_done(zio_t *zio);
145 extern void vdev_queue_change_io_priority(zio_t *zio, zio_priority_t priority);
147 extern int vdev_queue_length(vdev_t *vd);
148 extern uint64_t vdev_queue_last_offset(vdev_t *vd);
150 extern void vdev_config_dirty(vdev_t *vd);
151 extern void vdev_config_clean(vdev_t *vd);
152 extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg);
154 extern void vdev_state_dirty(vdev_t *vd);
155 extern void vdev_state_clean(vdev_t *vd);
157 extern void vdev_defer_resilver(vdev_t *vd);
158 extern boolean_t vdev_clear_resilver_deferred(vdev_t *vd, dmu_tx_t *tx);
160 typedef enum vdev_config_flag {
161 VDEV_CONFIG_SPARE = 1 << 0,
162 VDEV_CONFIG_L2CACHE = 1 << 1,
163 VDEV_CONFIG_REMOVING = 1 << 2,
164 VDEV_CONFIG_MOS = 1 << 3,
165 VDEV_CONFIG_MISSING = 1 << 4
166 } vdev_config_flag_t;
168 extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config);
169 extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
170 boolean_t getstats, vdev_config_flag_t flags);
176 extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset);
177 extern int vdev_label_number(uint64_t psise, uint64_t offset);
178 extern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg);
179 extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **);
180 extern void vdev_config_generate_stats(vdev_t *vd, nvlist_t *nv);
181 extern void vdev_label_write(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t
182 offset, uint64_t size, zio_done_func_t *done, void *priv, int flags);
183 extern int vdev_label_read_bootenv(vdev_t *, nvlist_t *);
184 extern int vdev_label_write_bootenv(vdev_t *, char *);
187 VDEV_LABEL_CREATE, /* create/add a new device */
188 VDEV_LABEL_REPLACE, /* replace an existing device */
189 VDEV_LABEL_SPARE, /* add a new hot spare */
190 VDEV_LABEL_REMOVE, /* remove an existing device */
191 VDEV_LABEL_L2CACHE, /* add an L2ARC cache device */
192 VDEV_LABEL_SPLIT /* generating new label for split-off dev */
195 extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason);
201 #endif /* _SYS_VDEV_H */