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Commit | Line | Data |
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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> | |
98c6faba | 32 | #ifndef __dietlibc__ |
64c4757e | 33 | extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence)); |
98c6faba | 34 | #endif |
64c4757e NB |
35 | |
36 | #include <sys/types.h> | |
37 | #include <sys/stat.h> | |
38 | #include <stdlib.h> | |
39 | #include <time.h> | |
40 | #include <getopt.h> | |
41 | #include <fcntl.h> | |
42 | #include <stdio.h> | |
43 | #include <errno.h> | |
44 | #include <string.h> | |
98c6faba NB |
45 | #ifdef __dietlibc__NONO |
46 | int strncmp(const char *s1, const char *s2, size_t n) __THROW __pure__; | |
47 | char *strncpy(char *dest, const char *src, size_t n) __THROW; | |
48 | #include <strings.h> | |
49 | #endif | |
50 | ||
64c4757e NB |
51 | |
52 | #include <linux/kdev_t.h> | |
e0d19036 NB |
53 | /*#include <linux/fs.h> */ |
54 | #include <sys/mount.h> | |
55 | #include <asm/types.h> | |
64c4757e NB |
56 | #include <sys/ioctl.h> |
57 | #define MD_MAJOR 9 | |
dd0781e5 | 58 | #define MdpMinorShift 6 |
64c4757e | 59 | |
e0d19036 | 60 | #ifndef BLKGETSIZE64 |
98c6faba | 61 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */ |
e0d19036 | 62 | #endif |
56eb10c0 | 63 | |
64c4757e NB |
64 | |
65 | #include "md_u.h" | |
e0d19036 | 66 | #include "md_p.h" |
64c4757e | 67 | |
9a9dab36 | 68 | #define Name "mdadm" |
682c7051 | 69 | |
e0d19036 NB |
70 | enum mode { |
71 | ASSEMBLE=1, | |
72 | BUILD, | |
73 | CREATE, | |
74 | MANAGE, | |
75 | MISC, | |
76 | MONITOR, | |
dd0781e5 | 77 | GROW, |
e0d19036 NB |
78 | }; |
79 | ||
64c4757e NB |
80 | extern char short_options[]; |
81 | extern struct option long_options[]; | |
56eedc1a | 82 | extern char Version[], Usage[], Help[], OptionHelp[], |
dd0781e5 | 83 | Help_create[], Help_build[], Help_assemble[], Help_grow[], |
e0d19036 | 84 | Help_manage[], Help_misc[], Help_monitor[], Help_config[]; |
64c4757e NB |
85 | |
86 | /* structures read from config file */ | |
52826846 NB |
87 | /* List of mddevice names and identifiers |
88 | * Identifiers can be: | |
89 | * uuid=128-hex-uuid | |
90 | * super-minor=decimal-minor-number-from-superblock | |
91 | * devices=comma,separated,list,of,device,names,with,wildcards | |
92 | * | |
93 | * If multiple fields are present, the intersection of all matching | |
94 | * devices is considered | |
95 | */ | |
98c6faba | 96 | #define UnSet (0xfffe) |
52826846 | 97 | typedef struct mddev_ident_s { |
dd0781e5 | 98 | char *devname; |
52826846 | 99 | |
dd0781e5 NB |
100 | int uuid_set; |
101 | __u32 uuid[4]; | |
52826846 | 102 | |
98c6faba | 103 | unsigned int super_minor; |
52826846 | 104 | |
dd0781e5 | 105 | char *devices; /* comma separated list of device |
52826846 NB |
106 | * names with wild cards |
107 | */ | |
dd0781e5 | 108 | int level; |
98c6faba NB |
109 | unsigned int raid_disks; |
110 | unsigned int spare_disks; | |
dd0781e5 NB |
111 | int autof; /* 1 for normal, 2 for partitioned */ |
112 | char *spare_group; | |
113 | ||
52826846 NB |
114 | struct mddev_ident_s *next; |
115 | } *mddev_ident_t; | |
64c4757e NB |
116 | |
117 | /* List of device names - wildcards expanded */ | |
118 | typedef struct mddev_dev_s { | |
119 | char *devname; | |
cd29a5c8 NB |
120 | char disposition; /* 'a' for add, 'r' for remove, 'f' for fail. |
121 | * Not set for names read from .config | |
122 | */ | |
64c4757e NB |
123 | struct mddev_dev_s *next; |
124 | } *mddev_dev_t; | |
125 | ||
682c7051 NB |
126 | typedef struct mapping { |
127 | char *name; | |
128 | int num; | |
129 | } mapping_t; | |
130 | ||
e0d19036 NB |
131 | |
132 | struct mdstat_ent { | |
133 | char *dev; | |
134 | int devnum; | |
135 | int active; | |
136 | char *level; | |
137 | char *pattern; /* U or up, _ for down */ | |
138 | int percent; /* -1 if no resync */ | |
e5329c37 | 139 | int resync; /* 1 if resync, 0 if recovery */ |
e0d19036 NB |
140 | struct mdstat_ent *next; |
141 | }; | |
142 | ||
dd0781e5 | 143 | extern struct mdstat_ent *mdstat_read(int); |
e0d19036 | 144 | extern void free_mdstat(struct mdstat_ent *ms); |
dd0781e5 | 145 | extern void mdstat_wait(int seconds); |
e0d19036 | 146 | |
52826846 NB |
147 | #ifndef Sendmail |
148 | #define Sendmail "/usr/lib/sendmail -t" | |
149 | #endif | |
150 | ||
682c7051 NB |
151 | extern char *map_num(mapping_t *map, int num); |
152 | extern int map_name(mapping_t *map, char *name); | |
e0d19036 | 153 | extern mapping_t r5layout[], pers[], modes[]; |
682c7051 | 154 | |
82b27616 | 155 | extern char *map_dev(int major, int minor); |
64c4757e NB |
156 | |
157 | ||
158 | extern int Manage_ro(char *devname, int fd, int readonly); | |
159 | extern int Manage_runstop(char *devname, int fd, int runstop); | |
dd0781e5 | 160 | extern int Manage_resize(char *devname, int fd, long long size, int raid_disks); |
64c4757e | 161 | extern int Manage_subdevs(char *devname, int fd, |
cd29a5c8 | 162 | mddev_dev_t devlist); |
e5329c37 | 163 | extern int Grow_Add_device(char *devname, int fd, char *newdev); |
64c4757e NB |
164 | |
165 | ||
166 | extern int Assemble(char *mddev, int mdfd, | |
52826846 NB |
167 | mddev_ident_t ident, |
168 | char *conffile, | |
cd29a5c8 | 169 | mddev_dev_t devlist, |
64c4757e | 170 | int readonly, int runstop, |
5787fa49 | 171 | char *update, |
64c4757e NB |
172 | int verbose, int force); |
173 | ||
174 | extern int Build(char *mddev, int mdfd, int chunk, int level, | |
175 | int raiddisks, | |
dd0781e5 | 176 | mddev_dev_t devlist, int assume_clean); |
64c4757e NB |
177 | |
178 | ||
179 | extern int Create(char *mddev, int mdfd, | |
aa88f531 | 180 | int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks, |
cd29a5c8 | 181 | int subdevs, mddev_dev_t devlist, |
52826846 | 182 | int runstop, int verbose, int force); |
64c4757e | 183 | |
feb716e9 | 184 | extern int Detail(char *dev, int brief, int test); |
e0d19036 | 185 | extern int Query(char *dev); |
bd526cee | 186 | extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust); |
cd29a5c8 | 187 | extern int Monitor(mddev_dev_t devlist, |
e0d19036 | 188 | char *mailaddr, char *alert_cmd, |
aa88f531 | 189 | int period, int daemonise, int scan, int oneshot, |
98c6faba | 190 | char *config, int test); |
64c4757e | 191 | |
9a9dab36 NB |
192 | extern int Kill(char *dev, int force); |
193 | ||
64c4757e | 194 | extern int md_get_version(int fd); |
e0d19036 | 195 | extern int get_linux_version(void); |
64c4757e | 196 | extern int parse_uuid(char *str, int uuid[4]); |
682c7051 NB |
197 | extern int check_ext2(int fd, char *name); |
198 | extern int check_reiser(int fd, char *name); | |
199 | extern int check_raid(int fd, char *name); | |
64c4757e | 200 | |
dd0781e5 NB |
201 | extern int get_mdp_major(void); |
202 | extern int is_standard(char *dev); | |
203 | ||
204 | ||
e0d19036 NB |
205 | extern mddev_ident_t conf_get_ident(char *conffile, char *dev); |
206 | extern mddev_dev_t conf_get_devs(char *conffile); | |
207 | extern char *conf_get_mailaddr(char *conffile); | |
208 | extern char *conf_get_program(char *conffile); | |
209 | extern char *conf_line(FILE *file); | |
98c6faba | 210 | extern char *conf_word(FILE *file, int allow_key); |
e0d19036 NB |
211 | extern void free_line(char *line); |
212 | extern int match_oneof(char *devices, char *devname); | |
213 | extern int load_super(int fd, mdp_super_t *super); | |
214 | extern void uuid_from_super(int uuid[4], mdp_super_t *super); | |
215 | extern int same_uuid(int a[4], int b[4]); | |
216 | extern int compare_super(mdp_super_t *first, mdp_super_t *second); | |
98c6faba | 217 | extern unsigned long calc_sb_csum(mdp_super_t *super); |
e0d19036 NB |
218 | extern int store_super(int fd, mdp_super_t *super); |
219 | extern int enough(int level, int raid_disks, int avail_disks); | |
220 | extern int ask(char *mesg); | |
221 | ||
cd29a5c8 | 222 | |
56eb10c0 | 223 | extern char *human_size(long long bytes); |
e0d19036 NB |
224 | char *human_size_brief(long long bytes); |
225 | ||
226 | extern void put_md_name(char *name); | |
227 | extern char *get_md_name(int dev); | |
228 | ||
c913b90e | 229 | extern char DefaultConfFile[]; |