source: mainline/uspace/srv/bd/hr/metadata/foreign/softraid/softraidvar.h@ 13c2365

Last change on this file since 13c2365 was a261634, checked in by Miroslav Cimerman <mc@…>, 6 months ago

hr: OpenBSD softraid metadata support
  • Property mode set to 100644
File size: 4.7 KB
Line 
1/* $OpenBSD: softraidvar.h,v 1.176 2022/12/19 15:27:06 kn Exp $ */
2/*
3 * Copyright (c) 2006 Marco Peereboom <marco@peereboom.us>
4 * Copyright (c) 2008 Chris Kuethe <ckuethe@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19/** @addtogroup hr
20 * @{
21 */
22/**
23 * @file
24 */
25
26#ifndef _HR_METADATA_FOREIGN_SOFTRAID_H
27#define _HR_METADATA_FOREIGN_SOFTRAID_H
28
29/* HelenOS specific includes, retypes */
30
31#include <crypto.h>
32
33typedef uint8_t u_int8_t;
34typedef uint16_t u_int16_t;
35typedef uint32_t u_int32_t;
36typedef uint64_t u_int64_t;
37
38/* copied from <sys/param.h> */
39#define _DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
40#define DEV_BSIZE (1 << _DEV_BSHIFT)
41
42/* here continues stripped down and slightly modified softraidvat.h */
43
44#define MD5_DIGEST_LENGTH 16
45
46#define SR_META_VERSION 6 /* bump when sr_metadata changes */
47#define SR_META_SIZE 64 /* save space at chunk beginning */
48#define SR_META_OFFSET 16 /* skip 8192 bytes at chunk beginning */
49
50#define SR_BOOT_OFFSET (SR_META_OFFSET + SR_META_SIZE)
51#define SR_BOOT_LOADER_SIZE 320 /* Size of boot loader storage. */
52#define SR_BOOT_LOADER_OFFSET SR_BOOT_OFFSET
53#define SR_BOOT_BLOCKS_SIZE 128 /* Size of boot block storage. */
54#define SR_BOOT_BLOCKS_OFFSET (SR_BOOT_LOADER_OFFSET + SR_BOOT_LOADER_SIZE)
55#define SR_BOOT_SIZE (SR_BOOT_LOADER_SIZE + SR_BOOT_BLOCKS_SIZE)
56
57#define SR_HEADER_SIZE (SR_META_SIZE + SR_BOOT_SIZE)
58#define SR_DATA_OFFSET (SR_META_OFFSET + SR_HEADER_SIZE)
59
60#define SR_UUID_MAX 16
61struct sr_uuid {
62 u_int8_t sui_id[SR_UUID_MAX];
63} __attribute__((packed));
64
65struct sr_metadata {
66 struct sr_meta_invariant {
67 /* do not change order of ssd_magic, ssd_version */
68 u_int64_t ssd_magic; /* magic id */
69#define SR_MAGIC 0x4d4152436372616dLLU
70 u_int32_t ssd_version; /* meta data version */
71 u_int32_t ssd_vol_flags; /* volume specific flags. */
72 struct sr_uuid ssd_uuid; /* unique identifier */
73
74 /* chunks */
75 u_int32_t ssd_chunk_no; /* number of chunks */
76 u_int32_t ssd_chunk_id; /* chunk identifier */
77
78 /* optional */
79 u_int32_t ssd_opt_no; /* nr of optional md elements */
80 u_int32_t ssd_secsize;
81
82 /* volume metadata */
83 u_int32_t ssd_volid; /* volume id */
84 u_int32_t ssd_level; /* raid level */
85 int64_t ssd_size; /* virt disk size in blocks */
86 char ssd_vendor[8]; /* scsi vendor */
87 char ssd_product[16];/* scsi product */
88 char ssd_revision[4];/* scsi revision */
89 /* optional volume members */
90 u_int32_t ssd_strip_size; /* strip size */
91 } _sdd_invariant;
92#define ssdi _sdd_invariant
93 /* MD5 of invariant metadata */
94 u_int8_t ssd_checksum[MD5_DIGEST_LENGTH];
95 char ssd_devname[32];/* /dev/XXXXX */
96 u_int32_t ssd_meta_flags;
97#define SR_META_DIRTY 0x1
98 u_int32_t ssd_data_blkno;
99 u_int64_t ssd_ondisk; /* on disk version counter */
100 int64_t ssd_rebuild; /* last block of rebuild */
101} __attribute__((packed));
102
103struct sr_meta_chunk {
104 struct sr_meta_chunk_invariant {
105 u_int32_t scm_volid; /* vd we belong to */
106 u_int32_t scm_chunk_id; /* chunk id */
107 char scm_devname[32];/* /dev/XXXXX */
108 int64_t scm_size; /* size of partition in blocks */
109 int64_t scm_coerced_size; /* coerced sz of part in blk */
110 struct sr_uuid scm_uuid; /* unique identifier */
111 } _scm_invariant;
112#define scmi _scm_invariant
113 /* MD5 of invariant chunk metadata */
114 u_int8_t scm_checksum[MD5_DIGEST_LENGTH];
115 u_int32_t scm_status; /* use bio bioc_disk status */
116} __attribute__((packed));
117
118struct sr_meta_opt_hdr {
119 u_int32_t som_type; /* optional metadata type. */
120 u_int32_t som_length; /* optional metadata length. */
121 u_int8_t som_checksum[MD5_DIGEST_LENGTH];
122} __attribute__((packed));
123
124#define SR_MD_RAID0 0
125#define SR_MD_RAID1 1
126#define SR_MD_RAID5 2
127#define SR_MD_CACHE 3
128#define SR_MD_CRYPTO 4
129/* AOE was 5 and 6. */
130/* SR_MD_RAID4 was 7. */
131#define SR_MD_RAID6 8
132#define SR_MD_CONCAT 9
133#define SR_MD_RAID1C 10
134
135/* functions to export from softraid.c to hr_softraid.c */
136void sr_checksum_print(const u_int8_t *);
137char *sr_uuid_format(const struct sr_uuid *);
138void sr_uuid_print(const struct sr_uuid *, int);
139void sr_meta_print(const struct sr_metadata *);
140
141#endif
142
143/** @}
144 */
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