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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2013 by Delphix. All rights reserved.
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
39 extern "C" {
40 #endif
41
42 /*
43 * Virtual device descriptors.
99 kmutex_t vc_lock;
100 };
101
102 typedef struct vdev_queue_class {
103 uint32_t vqc_active;
104
105 /*
106 * Sorted by offset or timestamp, depending on if the queue is
107 * LBA-ordered vs FIFO.
108 */
109 avl_tree_t vqc_queued_tree;
110 } vdev_queue_class_t;
111
112 struct vdev_queue {
113 vdev_t *vq_vdev;
114 vdev_queue_class_t vq_class[ZIO_PRIORITY_NUM_QUEUEABLE];
115 avl_tree_t vq_active_tree;
116 uint64_t vq_last_offset;
117 hrtime_t vq_io_complete_ts; /* time last i/o completed */
118 kmutex_t vq_lock;
119 };
120
121 /*
122 * Virtual device descriptor
123 */
124 struct vdev {
125 /*
126 * Common to all vdev types.
127 */
128 uint64_t vdev_id; /* child number in vdev parent */
129 uint64_t vdev_guid; /* unique ID for this vdev */
130 uint64_t vdev_guid_sum; /* self guid + all child guids */
131 uint64_t vdev_orig_guid; /* orig. guid prior to remove */
132 uint64_t vdev_asize; /* allocatable device capacity */
133 uint64_t vdev_min_asize; /* min acceptable asize */
134 uint64_t vdev_max_asize; /* max acceptable asize */
135 uint64_t vdev_ashift; /* block alignment shift */
136 uint64_t vdev_state; /* see VDEV_STATE_* #defines */
137 uint64_t vdev_prevstate; /* used when reopening a vdev */
138 vdev_ops_t *vdev_ops; /* vdev operations */
191 char *vdev_physpath; /* vdev device path (if any) */
192 char *vdev_fru; /* physical FRU location */
193 uint64_t vdev_not_present; /* not present during import */
194 uint64_t vdev_unspare; /* unspare when resilvering done */
195 boolean_t vdev_nowritecache; /* true if flushwritecache failed */
196 boolean_t vdev_checkremove; /* temporary online test */
197 boolean_t vdev_forcefault; /* force online fault */
198 boolean_t vdev_splitting; /* split or repair in progress */
199 boolean_t vdev_delayed_close; /* delayed device close? */
200 boolean_t vdev_tmpoffline; /* device taken offline temporarily? */
201 boolean_t vdev_detached; /* device detached? */
202 boolean_t vdev_cant_read; /* vdev is failing all reads */
203 boolean_t vdev_cant_write; /* vdev is failing all writes */
204 boolean_t vdev_isspare; /* was a hot spare */
205 boolean_t vdev_isl2cache; /* was a l2cache device */
206 vdev_queue_t vdev_queue; /* I/O deadline schedule queue */
207 vdev_cache_t vdev_cache; /* physical block cache */
208 spa_aux_vdev_t *vdev_aux; /* for l2cache vdevs */
209 zio_t *vdev_probe_zio; /* root of current probe */
210 vdev_aux_t vdev_label_aux; /* on-disk aux state */
211
212 /*
213 * For DTrace to work in userland (libzpool) context, these fields must
214 * remain at the end of the structure. DTrace will use the kernel's
215 * CTF definition for 'struct vdev', and since the size of a kmutex_t is
216 * larger in userland, the offsets for the rest of the fields would be
217 * incorrect.
218 */
219 kmutex_t vdev_dtl_lock; /* vdev_dtl_{map,resilver} */
220 kmutex_t vdev_stat_lock; /* vdev_stat */
221 kmutex_t vdev_probe_lock; /* protects vdev_probe_zio */
222 };
223
224 #define VDEV_RAIDZ_MAXPARITY 3
225
226 #define VDEV_PAD_SIZE (8 << 10)
227 /* 2 padding areas (vl_pad1 and vl_pad2) to skip */
228 #define VDEV_SKIP_SIZE VDEV_PAD_SIZE * 2
229 #define VDEV_PHYS_SIZE (112 << 10)
230 #define VDEV_UBERBLOCK_RING (128 << 10)
|
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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2013 by Delphix. All rights reserved.
24 * Copyright (c) 2013 Steven Hartland. All rights reserved.
25 */
26
27 #ifndef _SYS_VDEV_IMPL_H
28 #define _SYS_VDEV_IMPL_H
29
30 #include <sys/avl.h>
31 #include <sys/dmu.h>
32 #include <sys/metaslab.h>
33 #include <sys/nvpair.h>
34 #include <sys/space_map.h>
35 #include <sys/vdev.h>
36 #include <sys/dkio.h>
37 #include <sys/uberblock_impl.h>
38
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
42
43 /*
44 * Virtual device descriptors.
100 kmutex_t vc_lock;
101 };
102
103 typedef struct vdev_queue_class {
104 uint32_t vqc_active;
105
106 /*
107 * Sorted by offset or timestamp, depending on if the queue is
108 * LBA-ordered vs FIFO.
109 */
110 avl_tree_t vqc_queued_tree;
111 } vdev_queue_class_t;
112
113 struct vdev_queue {
114 vdev_t *vq_vdev;
115 vdev_queue_class_t vq_class[ZIO_PRIORITY_NUM_QUEUEABLE];
116 avl_tree_t vq_active_tree;
117 uint64_t vq_last_offset;
118 hrtime_t vq_io_complete_ts; /* time last i/o completed */
119 kmutex_t vq_lock;
120 uint64_t vq_lastoffset;
121 };
122
123 /*
124 * Virtual device descriptor
125 */
126 struct vdev {
127 /*
128 * Common to all vdev types.
129 */
130 uint64_t vdev_id; /* child number in vdev parent */
131 uint64_t vdev_guid; /* unique ID for this vdev */
132 uint64_t vdev_guid_sum; /* self guid + all child guids */
133 uint64_t vdev_orig_guid; /* orig. guid prior to remove */
134 uint64_t vdev_asize; /* allocatable device capacity */
135 uint64_t vdev_min_asize; /* min acceptable asize */
136 uint64_t vdev_max_asize; /* max acceptable asize */
137 uint64_t vdev_ashift; /* block alignment shift */
138 uint64_t vdev_state; /* see VDEV_STATE_* #defines */
139 uint64_t vdev_prevstate; /* used when reopening a vdev */
140 vdev_ops_t *vdev_ops; /* vdev operations */
193 char *vdev_physpath; /* vdev device path (if any) */
194 char *vdev_fru; /* physical FRU location */
195 uint64_t vdev_not_present; /* not present during import */
196 uint64_t vdev_unspare; /* unspare when resilvering done */
197 boolean_t vdev_nowritecache; /* true if flushwritecache failed */
198 boolean_t vdev_checkremove; /* temporary online test */
199 boolean_t vdev_forcefault; /* force online fault */
200 boolean_t vdev_splitting; /* split or repair in progress */
201 boolean_t vdev_delayed_close; /* delayed device close? */
202 boolean_t vdev_tmpoffline; /* device taken offline temporarily? */
203 boolean_t vdev_detached; /* device detached? */
204 boolean_t vdev_cant_read; /* vdev is failing all reads */
205 boolean_t vdev_cant_write; /* vdev is failing all writes */
206 boolean_t vdev_isspare; /* was a hot spare */
207 boolean_t vdev_isl2cache; /* was a l2cache device */
208 vdev_queue_t vdev_queue; /* I/O deadline schedule queue */
209 vdev_cache_t vdev_cache; /* physical block cache */
210 spa_aux_vdev_t *vdev_aux; /* for l2cache vdevs */
211 zio_t *vdev_probe_zio; /* root of current probe */
212 vdev_aux_t vdev_label_aux; /* on-disk aux state */
213 uint16_t vdev_rotation_rate; /* rotational rate of the media */
214 #define VDEV_RATE_UNKNOWN 0
215 #define VDEV_RATE_NON_ROTATING 1
216
217 /*
218 * For DTrace to work in userland (libzpool) context, these fields must
219 * remain at the end of the structure. DTrace will use the kernel's
220 * CTF definition for 'struct vdev', and since the size of a kmutex_t is
221 * larger in userland, the offsets for the rest of the fields would be
222 * incorrect.
223 */
224 kmutex_t vdev_dtl_lock; /* vdev_dtl_{map,resilver} */
225 kmutex_t vdev_stat_lock; /* vdev_stat */
226 kmutex_t vdev_probe_lock; /* protects vdev_probe_zio */
227 };
228
229 #define VDEV_RAIDZ_MAXPARITY 3
230
231 #define VDEV_PAD_SIZE (8 << 10)
232 /* 2 padding areas (vl_pad1 and vl_pad2) to skip */
233 #define VDEV_SKIP_SIZE VDEV_PAD_SIZE * 2
234 #define VDEV_PHYS_SIZE (112 << 10)
235 #define VDEV_UBERBLOCK_RING (128 << 10)
|