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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_VDEV_IMPL_H
27#define _SYS_VDEV_IMPL_H
28
29#include <sys/avl.h>
30#include <sys/dmu.h>
31#include <sys/metaslab.h>
32#include <sys/nvpair.h>
33#include <sys/space_map.h>
34#include <sys/vdev.h>
35#include <sys/dkio.h>
36#include <sys/uberblock_impl.h>
37
38#ifdef __cplusplus
39extern "C" {
40#endif
41
42/*
43 * Virtual device descriptors.
44 *
45 * All storage pool operations go through the virtual device framework,
46 * which provides data replication and I/O scheduling.
47 */
48
49/*
50 * Forward declarations that lots of things need.
51 */
52typedef struct vdev_queue vdev_queue_t;
53typedef struct vdev_cache vdev_cache_t;
54typedef struct vdev_cache_entry vdev_cache_entry_t;
55
56/*
57 * Virtual device operations
58 */
59typedef int vdev_open_func_t(vdev_t *vd, uint64_t *size, uint64_t *ashift);
60typedef void vdev_close_func_t(vdev_t *vd);
61typedef uint64_t vdev_asize_func_t(vdev_t *vd, uint64_t psize);
62typedef int vdev_io_start_func_t(zio_t *zio);
63typedef void vdev_io_done_func_t(zio_t *zio);
64typedef void vdev_state_change_func_t(vdev_t *vd, int, int);
65
66typedef struct vdev_ops {
67 vdev_open_func_t *vdev_op_open;
68 vdev_close_func_t *vdev_op_close;
69 vdev_asize_func_t *vdev_op_asize;
70 vdev_io_start_func_t *vdev_op_io_start;
71 vdev_io_done_func_t *vdev_op_io_done;
72 vdev_state_change_func_t *vdev_op_state_change;
73 char vdev_op_type[16];
74 boolean_t vdev_op_leaf;
75} vdev_ops_t;
76
77/*
78 * Virtual device properties
79 */
80struct vdev_cache_entry {
81 char *ve_data;
82 uint64_t ve_offset;
83 uint64_t ve_lastused;
84 avl_node_t ve_offset_node;
85 avl_node_t ve_lastused_node;
86 uint32_t ve_hits;
87 uint16_t ve_missed_update;
88 zio_t *ve_fill_io;
89};
90
91struct vdev_cache {
92 avl_tree_t vc_offset_tree;
93 avl_tree_t vc_lastused_tree;
94 kmutex_t vc_lock;
95};
96
97struct vdev_queue {
98 avl_tree_t vq_deadline_tree;
99 avl_tree_t vq_read_tree;
100 avl_tree_t vq_write_tree;
101 avl_tree_t vq_pending_tree;
102 kmutex_t vq_lock;
103};
104
105/*
106 * Virtual device descriptor
107 */
108struct vdev {
109 /*
110 * Common to all vdev types.
111 */
112 uint64_t vdev_id; /* child number in vdev parent */
113 uint64_t vdev_guid; /* unique ID for this vdev */
114 uint64_t vdev_guid_sum; /* self guid + all child guids */
115 uint64_t vdev_asize; /* allocatable device capacity */
116 uint64_t vdev_ashift; /* block alignment shift */
117 uint64_t vdev_state; /* see VDEV_STATE_* #defines */
118 uint64_t vdev_prevstate; /* used when reopening a vdev */
119 vdev_ops_t *vdev_ops; /* vdev operations */
120 spa_t *vdev_spa; /* spa for this vdev */
121 void *vdev_tsd; /* type-specific data */
122 vdev_t *vdev_top; /* top-level vdev */
123 vdev_t *vdev_parent; /* parent vdev */
124 vdev_t **vdev_child; /* array of children */
125 uint64_t vdev_children; /* number of children */
126 space_map_t vdev_dtl[DTL_TYPES]; /* in-core dirty time logs */
127 vdev_stat_t vdev_stat; /* virtual device statistics */
128
129 /*
130 * Top-level vdev state.
131 */
132 uint64_t vdev_ms_array; /* metaslab array object */
133 uint64_t vdev_ms_shift; /* metaslab size shift */
134 uint64_t vdev_ms_count; /* number of metaslabs */
135 metaslab_group_t *vdev_mg; /* metaslab group */
136 metaslab_t **vdev_ms; /* metaslab array */
137 txg_list_t vdev_ms_list; /* per-txg dirty metaslab lists */
138 txg_list_t vdev_dtl_list; /* per-txg dirty DTL lists */
139 txg_node_t vdev_txg_node; /* per-txg dirty vdev linkage */
140 boolean_t vdev_remove_wanted; /* async remove wanted? */
141 boolean_t vdev_probe_wanted; /* async probe wanted? */
142 list_node_t vdev_config_dirty_node; /* config dirty list */
143 list_node_t vdev_state_dirty_node; /* state dirty list */
144 uint64_t vdev_deflate_ratio; /* deflation ratio (x512) */
145 uint64_t vdev_islog; /* is an intent log device */
146
147 /*
148 * Leaf vdev state.
149 */
150 uint64_t vdev_psize; /* physical device capacity */
151 space_map_obj_t vdev_dtl_smo; /* dirty time log space map obj */
152 txg_node_t vdev_dtl_node; /* per-txg dirty DTL linkage */
153 uint64_t vdev_wholedisk; /* true if this is a whole disk */
154 uint64_t vdev_offline; /* persistent offline state */
155 uint64_t vdev_faulted; /* persistent faulted state */
156 uint64_t vdev_degraded; /* persistent degraded state */
157 uint64_t vdev_removed; /* persistent removed state */
158 uint64_t vdev_nparity; /* number of parity devices for raidz */
159 char *vdev_path; /* vdev path (if any) */
160 char *vdev_devid; /* vdev devid (if any) */
161 char *vdev_physpath; /* vdev device path (if any) */
162 char *vdev_fru; /* physical FRU location */
163 uint64_t vdev_not_present; /* not present during import */
164 uint64_t vdev_unspare; /* unspare when resilvering done */
165 hrtime_t vdev_last_try; /* last reopen time */
166 boolean_t vdev_nowritecache; /* true if flushwritecache failed */
167 boolean_t vdev_checkremove; /* temporary online test */
168 boolean_t vdev_forcefault; /* force online fault */
169 uint8_t vdev_tmpoffline; /* device taken offline temporarily? */
170 uint8_t vdev_detached; /* device detached? */
171 uint8_t vdev_cant_read; /* vdev is failing all reads */
172 uint8_t vdev_cant_write; /* vdev is failing all writes */
173 uint64_t vdev_isspare; /* was a hot spare */
174 uint64_t vdev_isl2cache; /* was a l2cache device */
175 vdev_queue_t vdev_queue; /* I/O deadline schedule queue */
176 vdev_cache_t vdev_cache; /* physical block cache */
177 spa_aux_vdev_t *vdev_aux; /* for l2cache vdevs */
178 zio_t *vdev_probe_zio; /* root of current probe */
179
180 /*
181 * For DTrace to work in userland (libzpool) context, these fields must
182 * remain at the end of the structure. DTrace will use the kernel's
183 * CTF definition for 'struct vdev', and since the size of a kmutex_t is
184 * larger in userland, the offsets for the rest fields would be
185 * incorrect.
186 */
187 kmutex_t vdev_dtl_lock; /* vdev_dtl_{map,resilver} */
188 kmutex_t vdev_stat_lock; /* vdev_stat */
189 kmutex_t vdev_probe_lock; /* protects vdev_probe_zio */
190};
191
192#define VDEV_PAD_SIZE (8 << 10)
193/* 2 padding areas (vl_pad1 and vl_pad2) to skip */
194#define VDEV_SKIP_SIZE VDEV_PAD_SIZE * 2
195#define VDEV_PHYS_SIZE (112 << 10)
196#define VDEV_UBERBLOCK_RING (128 << 10)
197
198#define VDEV_UBERBLOCK_SHIFT(vd) \
199 MAX((vd)->vdev_top->vdev_ashift, UBERBLOCK_SHIFT)
200#define VDEV_UBERBLOCK_COUNT(vd) \
201 (VDEV_UBERBLOCK_RING >> VDEV_UBERBLOCK_SHIFT(vd))
202#define VDEV_UBERBLOCK_OFFSET(vd, n) \
203 offsetof(vdev_label_t, vl_uberblock[(n) << VDEV_UBERBLOCK_SHIFT(vd)])
204#define VDEV_UBERBLOCK_SIZE(vd) (1ULL << VDEV_UBERBLOCK_SHIFT(vd))
205
206typedef struct vdev_phys {
207 char vp_nvlist[VDEV_PHYS_SIZE - sizeof (zio_block_tail_t)];
208 zio_block_tail_t vp_zbt;
209} vdev_phys_t;
210
211typedef struct vdev_label {
212 char vl_pad1[VDEV_PAD_SIZE]; /* 8K */
213 char vl_pad2[VDEV_PAD_SIZE]; /* 8K */
214 vdev_phys_t vl_vdev_phys; /* 112K */
215 char vl_uberblock[VDEV_UBERBLOCK_RING]; /* 128K */
216} vdev_label_t; /* 256K total */
217
218/*
219 * vdev_dirty() flags
220 */
221#define VDD_METASLAB 0x01
222#define VDD_DTL 0x02
223
224/*
225 * Size and offset of embedded boot loader region on each label.
226 * The total size of the first two labels plus the boot area is 4MB.
227 */
228#define VDEV_BOOT_OFFSET (2 * sizeof (vdev_label_t))
229#define VDEV_BOOT_SIZE (7ULL << 19) /* 3.5M */
230
231/*
232 * Size of label regions at the start and end of each leaf device.
233 */
234#define VDEV_LABEL_START_SIZE (2 * sizeof (vdev_label_t) + VDEV_BOOT_SIZE)
235#define VDEV_LABEL_END_SIZE (2 * sizeof (vdev_label_t))
236#define VDEV_LABELS 4
237
238#define VDEV_ALLOC_LOAD 0
239#define VDEV_ALLOC_ADD 1
240#define VDEV_ALLOC_SPARE 2
241#define VDEV_ALLOC_L2CACHE 3
242
243/*
244 * Allocate or free a vdev
245 */
246extern int vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *config,
247 vdev_t *parent, uint_t id, int alloctype);
248extern void vdev_free(vdev_t *vd);
249
250/*
251 * Add or remove children and parents
252 */
253extern void vdev_add_child(vdev_t *pvd, vdev_t *cvd);
254extern void vdev_remove_child(vdev_t *pvd, vdev_t *cvd);
255extern void vdev_compact_children(vdev_t *pvd);
256extern vdev_t *vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops);
257extern void vdev_remove_parent(vdev_t *cvd);
258
259/*
260 * vdev sync load and sync
261 */
| 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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_VDEV_IMPL_H
27#define _SYS_VDEV_IMPL_H
28
29#include <sys/avl.h>
30#include <sys/dmu.h>
31#include <sys/metaslab.h>
32#include <sys/nvpair.h>
33#include <sys/space_map.h>
34#include <sys/vdev.h>
35#include <sys/dkio.h>
36#include <sys/uberblock_impl.h>
37
38#ifdef __cplusplus
39extern "C" {
40#endif
41
42/*
43 * Virtual device descriptors.
44 *
45 * All storage pool operations go through the virtual device framework,
46 * which provides data replication and I/O scheduling.
47 */
48
49/*
50 * Forward declarations that lots of things need.
51 */
52typedef struct vdev_queue vdev_queue_t;
53typedef struct vdev_cache vdev_cache_t;
54typedef struct vdev_cache_entry vdev_cache_entry_t;
55
56/*
57 * Virtual device operations
58 */
59typedef int vdev_open_func_t(vdev_t *vd, uint64_t *size, uint64_t *ashift);
60typedef void vdev_close_func_t(vdev_t *vd);
61typedef uint64_t vdev_asize_func_t(vdev_t *vd, uint64_t psize);
62typedef int vdev_io_start_func_t(zio_t *zio);
63typedef void vdev_io_done_func_t(zio_t *zio);
64typedef void vdev_state_change_func_t(vdev_t *vd, int, int);
65
66typedef struct vdev_ops {
67 vdev_open_func_t *vdev_op_open;
68 vdev_close_func_t *vdev_op_close;
69 vdev_asize_func_t *vdev_op_asize;
70 vdev_io_start_func_t *vdev_op_io_start;
71 vdev_io_done_func_t *vdev_op_io_done;
72 vdev_state_change_func_t *vdev_op_state_change;
73 char vdev_op_type[16];
74 boolean_t vdev_op_leaf;
75} vdev_ops_t;
76
77/*
78 * Virtual device properties
79 */
80struct vdev_cache_entry {
81 char *ve_data;
82 uint64_t ve_offset;
83 uint64_t ve_lastused;
84 avl_node_t ve_offset_node;
85 avl_node_t ve_lastused_node;
86 uint32_t ve_hits;
87 uint16_t ve_missed_update;
88 zio_t *ve_fill_io;
89};
90
91struct vdev_cache {
92 avl_tree_t vc_offset_tree;
93 avl_tree_t vc_lastused_tree;
94 kmutex_t vc_lock;
95};
96
97struct vdev_queue {
98 avl_tree_t vq_deadline_tree;
99 avl_tree_t vq_read_tree;
100 avl_tree_t vq_write_tree;
101 avl_tree_t vq_pending_tree;
102 kmutex_t vq_lock;
103};
104
105/*
106 * Virtual device descriptor
107 */
108struct vdev {
109 /*
110 * Common to all vdev types.
111 */
112 uint64_t vdev_id; /* child number in vdev parent */
113 uint64_t vdev_guid; /* unique ID for this vdev */
114 uint64_t vdev_guid_sum; /* self guid + all child guids */
115 uint64_t vdev_asize; /* allocatable device capacity */
116 uint64_t vdev_ashift; /* block alignment shift */
117 uint64_t vdev_state; /* see VDEV_STATE_* #defines */
118 uint64_t vdev_prevstate; /* used when reopening a vdev */
119 vdev_ops_t *vdev_ops; /* vdev operations */
120 spa_t *vdev_spa; /* spa for this vdev */
121 void *vdev_tsd; /* type-specific data */
122 vdev_t *vdev_top; /* top-level vdev */
123 vdev_t *vdev_parent; /* parent vdev */
124 vdev_t **vdev_child; /* array of children */
125 uint64_t vdev_children; /* number of children */
126 space_map_t vdev_dtl[DTL_TYPES]; /* in-core dirty time logs */
127 vdev_stat_t vdev_stat; /* virtual device statistics */
128
129 /*
130 * Top-level vdev state.
131 */
132 uint64_t vdev_ms_array; /* metaslab array object */
133 uint64_t vdev_ms_shift; /* metaslab size shift */
134 uint64_t vdev_ms_count; /* number of metaslabs */
135 metaslab_group_t *vdev_mg; /* metaslab group */
136 metaslab_t **vdev_ms; /* metaslab array */
137 txg_list_t vdev_ms_list; /* per-txg dirty metaslab lists */
138 txg_list_t vdev_dtl_list; /* per-txg dirty DTL lists */
139 txg_node_t vdev_txg_node; /* per-txg dirty vdev linkage */
140 boolean_t vdev_remove_wanted; /* async remove wanted? */
141 boolean_t vdev_probe_wanted; /* async probe wanted? */
142 list_node_t vdev_config_dirty_node; /* config dirty list */
143 list_node_t vdev_state_dirty_node; /* state dirty list */
144 uint64_t vdev_deflate_ratio; /* deflation ratio (x512) */
145 uint64_t vdev_islog; /* is an intent log device */
146
147 /*
148 * Leaf vdev state.
149 */
150 uint64_t vdev_psize; /* physical device capacity */
151 space_map_obj_t vdev_dtl_smo; /* dirty time log space map obj */
152 txg_node_t vdev_dtl_node; /* per-txg dirty DTL linkage */
153 uint64_t vdev_wholedisk; /* true if this is a whole disk */
154 uint64_t vdev_offline; /* persistent offline state */
155 uint64_t vdev_faulted; /* persistent faulted state */
156 uint64_t vdev_degraded; /* persistent degraded state */
157 uint64_t vdev_removed; /* persistent removed state */
158 uint64_t vdev_nparity; /* number of parity devices for raidz */
159 char *vdev_path; /* vdev path (if any) */
160 char *vdev_devid; /* vdev devid (if any) */
161 char *vdev_physpath; /* vdev device path (if any) */
162 char *vdev_fru; /* physical FRU location */
163 uint64_t vdev_not_present; /* not present during import */
164 uint64_t vdev_unspare; /* unspare when resilvering done */
165 hrtime_t vdev_last_try; /* last reopen time */
166 boolean_t vdev_nowritecache; /* true if flushwritecache failed */
167 boolean_t vdev_checkremove; /* temporary online test */
168 boolean_t vdev_forcefault; /* force online fault */
169 uint8_t vdev_tmpoffline; /* device taken offline temporarily? */
170 uint8_t vdev_detached; /* device detached? */
171 uint8_t vdev_cant_read; /* vdev is failing all reads */
172 uint8_t vdev_cant_write; /* vdev is failing all writes */
173 uint64_t vdev_isspare; /* was a hot spare */
174 uint64_t vdev_isl2cache; /* was a l2cache device */
175 vdev_queue_t vdev_queue; /* I/O deadline schedule queue */
176 vdev_cache_t vdev_cache; /* physical block cache */
177 spa_aux_vdev_t *vdev_aux; /* for l2cache vdevs */
178 zio_t *vdev_probe_zio; /* root of current probe */
179
180 /*
181 * For DTrace to work in userland (libzpool) context, these fields must
182 * remain at the end of the structure. DTrace will use the kernel's
183 * CTF definition for 'struct vdev', and since the size of a kmutex_t is
184 * larger in userland, the offsets for the rest fields would be
185 * incorrect.
186 */
187 kmutex_t vdev_dtl_lock; /* vdev_dtl_{map,resilver} */
188 kmutex_t vdev_stat_lock; /* vdev_stat */
189 kmutex_t vdev_probe_lock; /* protects vdev_probe_zio */
190};
191
192#define VDEV_PAD_SIZE (8 << 10)
193/* 2 padding areas (vl_pad1 and vl_pad2) to skip */
194#define VDEV_SKIP_SIZE VDEV_PAD_SIZE * 2
195#define VDEV_PHYS_SIZE (112 << 10)
196#define VDEV_UBERBLOCK_RING (128 << 10)
197
198#define VDEV_UBERBLOCK_SHIFT(vd) \
199 MAX((vd)->vdev_top->vdev_ashift, UBERBLOCK_SHIFT)
200#define VDEV_UBERBLOCK_COUNT(vd) \
201 (VDEV_UBERBLOCK_RING >> VDEV_UBERBLOCK_SHIFT(vd))
202#define VDEV_UBERBLOCK_OFFSET(vd, n) \
203 offsetof(vdev_label_t, vl_uberblock[(n) << VDEV_UBERBLOCK_SHIFT(vd)])
204#define VDEV_UBERBLOCK_SIZE(vd) (1ULL << VDEV_UBERBLOCK_SHIFT(vd))
205
206typedef struct vdev_phys {
207 char vp_nvlist[VDEV_PHYS_SIZE - sizeof (zio_block_tail_t)];
208 zio_block_tail_t vp_zbt;
209} vdev_phys_t;
210
211typedef struct vdev_label {
212 char vl_pad1[VDEV_PAD_SIZE]; /* 8K */
213 char vl_pad2[VDEV_PAD_SIZE]; /* 8K */
214 vdev_phys_t vl_vdev_phys; /* 112K */
215 char vl_uberblock[VDEV_UBERBLOCK_RING]; /* 128K */
216} vdev_label_t; /* 256K total */
217
218/*
219 * vdev_dirty() flags
220 */
221#define VDD_METASLAB 0x01
222#define VDD_DTL 0x02
223
224/*
225 * Size and offset of embedded boot loader region on each label.
226 * The total size of the first two labels plus the boot area is 4MB.
227 */
228#define VDEV_BOOT_OFFSET (2 * sizeof (vdev_label_t))
229#define VDEV_BOOT_SIZE (7ULL << 19) /* 3.5M */
230
231/*
232 * Size of label regions at the start and end of each leaf device.
233 */
234#define VDEV_LABEL_START_SIZE (2 * sizeof (vdev_label_t) + VDEV_BOOT_SIZE)
235#define VDEV_LABEL_END_SIZE (2 * sizeof (vdev_label_t))
236#define VDEV_LABELS 4
237
238#define VDEV_ALLOC_LOAD 0
239#define VDEV_ALLOC_ADD 1
240#define VDEV_ALLOC_SPARE 2
241#define VDEV_ALLOC_L2CACHE 3
242
243/*
244 * Allocate or free a vdev
245 */
246extern int vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *config,
247 vdev_t *parent, uint_t id, int alloctype);
248extern void vdev_free(vdev_t *vd);
249
250/*
251 * Add or remove children and parents
252 */
253extern void vdev_add_child(vdev_t *pvd, vdev_t *cvd);
254extern void vdev_remove_child(vdev_t *pvd, vdev_t *cvd);
255extern void vdev_compact_children(vdev_t *pvd);
256extern vdev_t *vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops);
257extern void vdev_remove_parent(vdev_t *cvd);
258
259/*
260 * vdev sync load and sync
261 */
|
262extern void vdev_load(vdev_t *vd);
263extern void vdev_sync(vdev_t *vd, uint64_t txg);
264extern void vdev_sync_done(vdev_t *vd, uint64_t txg);
265extern void vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg);
266
267/*
268 * Available vdev types.
269 */
270extern vdev_ops_t vdev_root_ops;
271extern vdev_ops_t vdev_mirror_ops;
272extern vdev_ops_t vdev_replacing_ops;
273extern vdev_ops_t vdev_raidz_ops;
274#ifdef _KERNEL
275extern vdev_ops_t vdev_geom_ops;
276#else
277extern vdev_ops_t vdev_disk_ops;
278#endif
279extern vdev_ops_t vdev_file_ops;
280extern vdev_ops_t vdev_missing_ops;
281extern vdev_ops_t vdev_spare_ops;
282
283/*
284 * Common size functions
285 */
286extern uint64_t vdev_default_asize(vdev_t *vd, uint64_t psize);
287extern uint64_t vdev_get_rsize(vdev_t *vd);
288
289/*
290 * zdb uses this tunable, so it must be declared here to make lint happy.
291 */
292extern int zfs_vdev_cache_size;
293
294#ifdef __cplusplus
295}
296#endif
297
298#endif /* _SYS_VDEV_IMPL_H */
| 263extern void vdev_load(vdev_t *vd);
264extern void vdev_sync(vdev_t *vd, uint64_t txg);
265extern void vdev_sync_done(vdev_t *vd, uint64_t txg);
266extern void vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg);
267
268/*
269 * Available vdev types.
270 */
271extern vdev_ops_t vdev_root_ops;
272extern vdev_ops_t vdev_mirror_ops;
273extern vdev_ops_t vdev_replacing_ops;
274extern vdev_ops_t vdev_raidz_ops;
275#ifdef _KERNEL
276extern vdev_ops_t vdev_geom_ops;
277#else
278extern vdev_ops_t vdev_disk_ops;
279#endif
280extern vdev_ops_t vdev_file_ops;
281extern vdev_ops_t vdev_missing_ops;
282extern vdev_ops_t vdev_spare_ops;
283
284/*
285 * Common size functions
286 */
287extern uint64_t vdev_default_asize(vdev_t *vd, uint64_t psize);
288extern uint64_t vdev_get_rsize(vdev_t *vd);
289
290/*
291 * zdb uses this tunable, so it must be declared here to make lint happy.
292 */
293extern int zfs_vdev_cache_size;
294
295#ifdef __cplusplus
296}
297#endif
298
299#endif /* _SYS_VDEV_IMPL_H */
|