1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _ZIO_IMPL_H
#define _ZIO_IMPL_H
#include <sys/zfs_context.h>
#include <sys/zio.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* zio pipeline stage definitions
*/
enum zio_stage {
ZIO_STAGE_OPEN = 1 << 0, /* RWFCI */
ZIO_STAGE_READ_BP_INIT = 1 << 1, /* R---- */
ZIO_STAGE_FREE_BP_INIT = 1 << 2, /* --F-- */
ZIO_STAGE_ISSUE_ASYNC = 1 << 3, /* RWF-- */
ZIO_STAGE_WRITE_BP_INIT = 1 << 4, /* -W--- */
ZIO_STAGE_CHECKSUM_GENERATE = 1 << 5, /* -W--- */
ZIO_STAGE_DDT_READ_START = 1 << 6, /* R---- */
ZIO_STAGE_DDT_READ_DONE = 1 << 7, /* R---- */
ZIO_STAGE_DDT_WRITE = 1 << 8, /* -W--- */
ZIO_STAGE_DDT_FREE = 1 << 9, /* --F-- */
ZIO_STAGE_GANG_ASSEMBLE = 1 << 10, /* RWFC- */
ZIO_STAGE_GANG_ISSUE = 1 << 11, /* RWFC- */
ZIO_STAGE_DVA_ALLOCATE = 1 << 12, /* -W--- */
ZIO_STAGE_DVA_FREE = 1 << 13, /* --F-- */
ZIO_STAGE_DVA_CLAIM = 1 << 14, /* ---C- */
ZIO_STAGE_READY = 1 << 15, /* RWFCI */
ZIO_STAGE_VDEV_IO_START = 1 << 16, /* RW--I */
ZIO_STAGE_VDEV_IO_DONE = 1 << 17, /* RW--I */
ZIO_STAGE_VDEV_IO_ASSESS = 1 << 18, /* RW--I */
ZIO_STAGE_CHECKSUM_VERIFY = 1 << 19, /* R---- */
ZIO_STAGE_DONE = 1 << 20 /* RWFCI */
};
#define ZIO_INTERLOCK_STAGES \
(ZIO_STAGE_READY | \
ZIO_STAGE_DONE)
#define ZIO_INTERLOCK_PIPELINE \
ZIO_INTERLOCK_STAGES
#define ZIO_VDEV_IO_STAGES \
(ZIO_STAGE_VDEV_IO_START | \
ZIO_STAGE_VDEV_IO_DONE | \
ZIO_STAGE_VDEV_IO_ASSESS)
#define ZIO_VDEV_CHILD_PIPELINE \
(ZIO_VDEV_IO_STAGES | \
ZIO_STAGE_DONE)
#define ZIO_READ_COMMON_STAGES \
(ZIO_INTERLOCK_STAGES | \
ZIO_VDEV_IO_STAGES | \
ZIO_STAGE_CHECKSUM_VERIFY)
#define ZIO_READ_PHYS_PIPELINE \
ZIO_READ_COMMON_STAGES
#define ZIO_READ_PIPELINE \
(ZIO_READ_COMMON_STAGES | \
ZIO_STAGE_READ_BP_INIT)
#define ZIO_DDT_CHILD_READ_PIPELINE \
ZIO_READ_COMMON_STAGES
#define ZIO_DDT_READ_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
ZIO_STAGE_READ_BP_INIT | \
ZIO_STAGE_DDT_READ_START | \
ZIO_STAGE_DDT_READ_DONE)
#define ZIO_WRITE_COMMON_STAGES \
(ZIO_INTERLOCK_STAGES | \
ZIO_VDEV_IO_STAGES | \
ZIO_STAGE_ISSUE_ASYNC | \
ZIO_STAGE_CHECKSUM_GENERATE)
#define ZIO_WRITE_PHYS_PIPELINE \
ZIO_WRITE_COMMON_STAGES
#define ZIO_REWRITE_PIPELINE \
(ZIO_WRITE_COMMON_STAGES | \
ZIO_STAGE_WRITE_BP_INIT)
#define ZIO_WRITE_PIPELINE \
(ZIO_WRITE_COMMON_STAGES | \
ZIO_STAGE_WRITE_BP_INIT | \
ZIO_STAGE_DVA_ALLOCATE)
#define ZIO_DDT_CHILD_WRITE_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
ZIO_VDEV_IO_STAGES | \
ZIO_STAGE_DVA_ALLOCATE)
#define ZIO_DDT_WRITE_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
ZIO_STAGE_ISSUE_ASYNC | \
ZIO_STAGE_WRITE_BP_INIT | \
ZIO_STAGE_CHECKSUM_GENERATE | \
ZIO_STAGE_DDT_WRITE)
#define ZIO_GANG_STAGES \
(ZIO_STAGE_GANG_ASSEMBLE | \
ZIO_STAGE_GANG_ISSUE)
#define ZIO_FREE_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
ZIO_STAGE_FREE_BP_INIT | \
ZIO_STAGE_DVA_FREE)
#define ZIO_DDT_FREE_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
ZIO_STAGE_FREE_BP_INIT | \
ZIO_STAGE_ISSUE_ASYNC | \
ZIO_STAGE_DDT_FREE)
#define ZIO_CLAIM_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
ZIO_STAGE_DVA_CLAIM)
#define ZIO_IOCTL_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
ZIO_STAGE_VDEV_IO_START | \
ZIO_STAGE_VDEV_IO_ASSESS)
#define ZIO_BLOCKING_STAGES \
(ZIO_STAGE_DVA_ALLOCATE | \
ZIO_STAGE_DVA_CLAIM | \
ZIO_STAGE_VDEV_IO_START)
extern void zio_inject_init(void);
extern void zio_inject_fini(void);
#ifdef __cplusplus
}
#endif
#endif /* _ZIO_IMPL_H */
|
