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64c4757e | 1 | /* |
9a9dab36 | 2 | * mdadm - manage Linux "md" devices aka RAID arrays. |
64c4757e | 3 | * |
cd29a5c8 | 4 | * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au> |
64c4757e NB |
5 | * |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
22 | * Email: <neilb@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | */ | |
29 | ||
30 | #define __USE_LARGEFILE64 | |
31 | #include <unistd.h> | |
32 | extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence)); | |
33 | ||
34 | #include <sys/types.h> | |
35 | #include <sys/stat.h> | |
36 | #include <stdlib.h> | |
37 | #include <time.h> | |
38 | #include <getopt.h> | |
39 | #include <fcntl.h> | |
40 | #include <stdio.h> | |
41 | #include <errno.h> | |
42 | #include <string.h> | |
43 | ||
44 | #include <linux/kdev_t.h> | |
e0d19036 NB |
45 | /*#include <linux/fs.h> */ |
46 | #include <sys/mount.h> | |
47 | #include <asm/types.h> | |
64c4757e NB |
48 | #include <sys/ioctl.h> |
49 | #define MD_MAJOR 9 | |
50 | ||
e0d19036 NB |
51 | #ifndef BLKGETSIZE64 |
52 | #define BLKGETSIZE64 _IOR(0x12,114,sizeof(__u64)) /* return device size in bytes (u64 *arg) */ | |
53 | #endif | |
56eb10c0 | 54 | |
64c4757e NB |
55 | |
56 | #include "md_u.h" | |
e0d19036 | 57 | #include "md_p.h" |
64c4757e | 58 | |
9a9dab36 | 59 | #define Name "mdadm" |
682c7051 | 60 | |
e0d19036 NB |
61 | enum mode { |
62 | ASSEMBLE=1, | |
63 | BUILD, | |
64 | CREATE, | |
65 | MANAGE, | |
66 | MISC, | |
67 | MONITOR, | |
68 | }; | |
69 | ||
64c4757e NB |
70 | extern char short_options[]; |
71 | extern struct option long_options[]; | |
56eedc1a | 72 | extern char Version[], Usage[], Help[], OptionHelp[], |
e0d19036 NB |
73 | Help_create[], Help_build[], Help_assemble[], |
74 | Help_manage[], Help_misc[], Help_monitor[], Help_config[]; | |
64c4757e NB |
75 | |
76 | /* structures read from config file */ | |
52826846 NB |
77 | /* List of mddevice names and identifiers |
78 | * Identifiers can be: | |
79 | * uuid=128-hex-uuid | |
80 | * super-minor=decimal-minor-number-from-superblock | |
81 | * devices=comma,separated,list,of,device,names,with,wildcards | |
82 | * | |
83 | * If multiple fields are present, the intersection of all matching | |
84 | * devices is considered | |
85 | */ | |
86 | typedef struct mddev_ident_s { | |
64c4757e | 87 | char *devname; |
52826846 NB |
88 | |
89 | int uuid_set; | |
64c4757e | 90 | __u32 uuid[4]; |
52826846 NB |
91 | |
92 | int super_minor; /* -1 if not set */ | |
93 | ||
94 | char *devices; /* comma separated list of device | |
95 | * names with wild cards | |
96 | */ | |
cd29a5c8 NB |
97 | int level; /* -10 if not set */ |
98 | int raid_disks; /* -1 if not set */ | |
52826846 NB |
99 | char *spare_group; |
100 | struct mddev_ident_s *next; | |
101 | } *mddev_ident_t; | |
64c4757e NB |
102 | |
103 | /* List of device names - wildcards expanded */ | |
104 | typedef struct mddev_dev_s { | |
105 | char *devname; | |
cd29a5c8 NB |
106 | char disposition; /* 'a' for add, 'r' for remove, 'f' for fail. |
107 | * Not set for names read from .config | |
108 | */ | |
64c4757e NB |
109 | struct mddev_dev_s *next; |
110 | } *mddev_dev_t; | |
111 | ||
682c7051 NB |
112 | typedef struct mapping { |
113 | char *name; | |
114 | int num; | |
115 | } mapping_t; | |
116 | ||
e0d19036 NB |
117 | |
118 | struct mdstat_ent { | |
119 | char *dev; | |
120 | int devnum; | |
121 | int active; | |
122 | char *level; | |
123 | char *pattern; /* U or up, _ for down */ | |
124 | int percent; /* -1 if no resync */ | |
125 | struct mdstat_ent *next; | |
126 | }; | |
127 | ||
128 | extern struct mdstat_ent *mdstat_read(void); | |
129 | extern void free_mdstat(struct mdstat_ent *ms); | |
130 | ||
52826846 NB |
131 | #ifndef Sendmail |
132 | #define Sendmail "/usr/lib/sendmail -t" | |
133 | #endif | |
134 | ||
682c7051 NB |
135 | extern char *map_num(mapping_t *map, int num); |
136 | extern int map_name(mapping_t *map, char *name); | |
e0d19036 | 137 | extern mapping_t r5layout[], pers[], modes[]; |
682c7051 | 138 | |
82b27616 | 139 | extern char *map_dev(int major, int minor); |
64c4757e NB |
140 | |
141 | ||
142 | extern int Manage_ro(char *devname, int fd, int readonly); | |
143 | extern int Manage_runstop(char *devname, int fd, int runstop); | |
144 | extern int Manage_subdevs(char *devname, int fd, | |
cd29a5c8 | 145 | mddev_dev_t devlist); |
64c4757e NB |
146 | |
147 | ||
148 | extern int Assemble(char *mddev, int mdfd, | |
52826846 NB |
149 | mddev_ident_t ident, |
150 | char *conffile, | |
cd29a5c8 | 151 | mddev_dev_t devlist, |
64c4757e | 152 | int readonly, int runstop, |
5787fa49 | 153 | char *update, |
64c4757e NB |
154 | int verbose, int force); |
155 | ||
156 | extern int Build(char *mddev, int mdfd, int chunk, int level, | |
157 | int raiddisks, | |
cd29a5c8 | 158 | mddev_dev_t devlist); |
64c4757e NB |
159 | |
160 | ||
161 | extern int Create(char *mddev, int mdfd, | |
aa88f531 | 162 | int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks, |
cd29a5c8 | 163 | int subdevs, mddev_dev_t devlist, |
52826846 | 164 | int runstop, int verbose, int force); |
64c4757e | 165 | |
cd29a5c8 | 166 | extern int Detail(char *dev, int brief); |
e0d19036 | 167 | extern int Query(char *dev); |
bd526cee | 168 | extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust); |
cd29a5c8 | 169 | extern int Monitor(mddev_dev_t devlist, |
e0d19036 | 170 | char *mailaddr, char *alert_cmd, |
aa88f531 | 171 | int period, int daemonise, int scan, int oneshot, |
e0d19036 | 172 | char *config); |
64c4757e | 173 | |
9a9dab36 NB |
174 | extern int Kill(char *dev, int force); |
175 | ||
64c4757e | 176 | extern int md_get_version(int fd); |
e0d19036 | 177 | extern int get_linux_version(void); |
64c4757e | 178 | extern int parse_uuid(char *str, int uuid[4]); |
682c7051 NB |
179 | extern int check_ext2(int fd, char *name); |
180 | extern int check_reiser(int fd, char *name); | |
181 | extern int check_raid(int fd, char *name); | |
64c4757e | 182 | |
e0d19036 NB |
183 | extern mddev_ident_t conf_get_ident(char *conffile, char *dev); |
184 | extern mddev_dev_t conf_get_devs(char *conffile); | |
185 | extern char *conf_get_mailaddr(char *conffile); | |
186 | extern char *conf_get_program(char *conffile); | |
187 | extern char *conf_line(FILE *file); | |
188 | extern void free_line(char *line); | |
189 | extern int match_oneof(char *devices, char *devname); | |
190 | extern int load_super(int fd, mdp_super_t *super); | |
191 | extern void uuid_from_super(int uuid[4], mdp_super_t *super); | |
192 | extern int same_uuid(int a[4], int b[4]); | |
193 | extern int compare_super(mdp_super_t *first, mdp_super_t *second); | |
194 | extern int calc_sb_csum(mdp_super_t *super); | |
195 | extern int store_super(int fd, mdp_super_t *super); | |
196 | extern int enough(int level, int raid_disks, int avail_disks); | |
197 | extern int ask(char *mesg); | |
198 | ||
cd29a5c8 | 199 | |
56eb10c0 | 200 | extern char *human_size(long long bytes); |
e0d19036 NB |
201 | char *human_size_brief(long long bytes); |
202 | ||
203 | extern void put_md_name(char *name); | |
204 | extern char *get_md_name(int dev); | |
205 | ||
c913b90e | 206 | extern char DefaultConfFile[]; |