]>
Commit | Line | Data |
---|---|---|
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 | |
4b1ac34b NB |
68 | /* general information that might be extracted from a superblock */ |
69 | struct mdinfo { | |
70 | mdu_array_info_t array; | |
71 | mdu_disk_info_t disk; | |
72 | __u64 events; | |
73 | unsigned int uuid[4]; | |
74 | }; | |
75 | ||
9a9dab36 | 76 | #define Name "mdadm" |
682c7051 | 77 | |
e0d19036 NB |
78 | enum mode { |
79 | ASSEMBLE=1, | |
80 | BUILD, | |
81 | CREATE, | |
82 | MANAGE, | |
83 | MISC, | |
84 | MONITOR, | |
dd0781e5 | 85 | GROW, |
e0d19036 NB |
86 | }; |
87 | ||
64c4757e NB |
88 | extern char short_options[]; |
89 | extern struct option long_options[]; | |
56eedc1a | 90 | extern char Version[], Usage[], Help[], OptionHelp[], |
dd0781e5 | 91 | Help_create[], Help_build[], Help_assemble[], Help_grow[], |
e0d19036 | 92 | Help_manage[], Help_misc[], Help_monitor[], Help_config[]; |
64c4757e NB |
93 | |
94 | /* structures read from config file */ | |
52826846 NB |
95 | /* List of mddevice names and identifiers |
96 | * Identifiers can be: | |
97 | * uuid=128-hex-uuid | |
98 | * super-minor=decimal-minor-number-from-superblock | |
99 | * devices=comma,separated,list,of,device,names,with,wildcards | |
100 | * | |
101 | * If multiple fields are present, the intersection of all matching | |
102 | * devices is considered | |
103 | */ | |
98c6faba | 104 | #define UnSet (0xfffe) |
52826846 | 105 | typedef struct mddev_ident_s { |
dd0781e5 | 106 | char *devname; |
52826846 | 107 | |
dd0781e5 NB |
108 | int uuid_set; |
109 | __u32 uuid[4]; | |
52826846 | 110 | |
98c6faba | 111 | unsigned int super_minor; |
52826846 | 112 | |
dd0781e5 | 113 | char *devices; /* comma separated list of device |
52826846 NB |
114 | * names with wild cards |
115 | */ | |
dd0781e5 | 116 | int level; |
98c6faba NB |
117 | unsigned int raid_disks; |
118 | unsigned int spare_disks; | |
f9ce90ba | 119 | struct superswitch *ss; |
dd0781e5 NB |
120 | int autof; /* 1 for normal, 2 for partitioned */ |
121 | char *spare_group; | |
122 | ||
52826846 NB |
123 | struct mddev_ident_s *next; |
124 | } *mddev_ident_t; | |
64c4757e NB |
125 | |
126 | /* List of device names - wildcards expanded */ | |
127 | typedef struct mddev_dev_s { | |
128 | char *devname; | |
cd29a5c8 NB |
129 | char disposition; /* 'a' for add, 'r' for remove, 'f' for fail. |
130 | * Not set for names read from .config | |
131 | */ | |
64c4757e NB |
132 | struct mddev_dev_s *next; |
133 | } *mddev_dev_t; | |
134 | ||
682c7051 NB |
135 | typedef struct mapping { |
136 | char *name; | |
137 | int num; | |
138 | } mapping_t; | |
139 | ||
e0d19036 NB |
140 | |
141 | struct mdstat_ent { | |
142 | char *dev; | |
143 | int devnum; | |
144 | int active; | |
145 | char *level; | |
146 | char *pattern; /* U or up, _ for down */ | |
147 | int percent; /* -1 if no resync */ | |
e5329c37 | 148 | int resync; /* 1 if resync, 0 if recovery */ |
e0d19036 NB |
149 | struct mdstat_ent *next; |
150 | }; | |
151 | ||
dd0781e5 | 152 | extern struct mdstat_ent *mdstat_read(int); |
e0d19036 | 153 | extern void free_mdstat(struct mdstat_ent *ms); |
dd0781e5 | 154 | extern void mdstat_wait(int seconds); |
e0d19036 | 155 | |
52826846 NB |
156 | #ifndef Sendmail |
157 | #define Sendmail "/usr/lib/sendmail -t" | |
158 | #endif | |
159 | ||
682c7051 NB |
160 | extern char *map_num(mapping_t *map, int num); |
161 | extern int map_name(mapping_t *map, char *name); | |
b5e64645 | 162 | extern mapping_t r5layout[], pers[], modes[], faultylayout[]; |
682c7051 | 163 | |
82b27616 | 164 | extern char *map_dev(int major, int minor); |
64c4757e NB |
165 | |
166 | ||
f9ce90ba NB |
167 | extern struct superswitch { |
168 | void (*examine_super)(void *sbv); | |
169 | void (*brief_examine_super)(void *sbv); | |
170 | void (*detail_super)(void *sbv); | |
171 | void (*brief_detail_super)(void *sbv); | |
172 | void (*uuid_from_super)(int uuid[4], void *sbv); | |
173 | void (*getinfo_super)(struct mdinfo *info, void *sbv); | |
174 | int (*update_super)(struct mdinfo *info, void *sbv, char *update, char *devname, int verbose); | |
175 | __u64 (*event_super)(void *sbv); | |
176 | void (*init_super)(void **sbp, mdu_array_info_t *info); | |
177 | void (*add_to_super)(void *sbv, mdu_disk_info_t *dinfo); | |
178 | int (*store_super)(int fd, void *sbv); | |
179 | int (*write_init_super)(void *sbv, mdu_disk_info_t *dinfo, char *devname); | |
180 | int (*compare_super)(void **firstp, void *secondv); | |
181 | int (*load_super)(int fd, void **sbp, char *devname); | |
182 | int (*match_metadata_desc)(char *arg); | |
183 | } super0, *superlist[]; | |
184 | ||
185 | extern struct superswitch *super_by_version(int vers); | |
186 | extern struct superswitch *guess_super(int fd, char *dev); | |
187 | ||
188 | ||
64c4757e NB |
189 | extern int Manage_ro(char *devname, int fd, int readonly); |
190 | extern int Manage_runstop(char *devname, int fd, int runstop); | |
dd0781e5 | 191 | extern int Manage_resize(char *devname, int fd, long long size, int raid_disks); |
b5e64645 | 192 | extern int Manage_reconfig(char *devname, int fd, int layout); |
64c4757e | 193 | extern int Manage_subdevs(char *devname, int fd, |
cd29a5c8 | 194 | mddev_dev_t devlist); |
e5329c37 | 195 | extern int Grow_Add_device(char *devname, int fd, char *newdev); |
64c4757e NB |
196 | |
197 | ||
f9ce90ba | 198 | extern int Assemble(struct superswitch *ss, char *mddev, int mdfd, |
52826846 NB |
199 | mddev_ident_t ident, |
200 | char *conffile, | |
cd29a5c8 | 201 | mddev_dev_t devlist, |
64c4757e | 202 | int readonly, int runstop, |
5787fa49 | 203 | char *update, |
64c4757e NB |
204 | int verbose, int force); |
205 | ||
b5e64645 | 206 | extern int Build(char *mddev, int mdfd, int chunk, int level, int layout, |
64c4757e | 207 | int raiddisks, |
dd0781e5 | 208 | mddev_dev_t devlist, int assume_clean); |
64c4757e NB |
209 | |
210 | ||
f9ce90ba | 211 | extern int Create(struct superswitch *ss, char *mddev, int mdfd, |
aa88f531 | 212 | int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks, |
cd29a5c8 | 213 | int subdevs, mddev_dev_t devlist, |
52826846 | 214 | int runstop, int verbose, int force); |
64c4757e | 215 | |
feb716e9 | 216 | extern int Detail(char *dev, int brief, int test); |
e0d19036 | 217 | extern int Query(char *dev); |
bd526cee | 218 | extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust); |
cd29a5c8 | 219 | extern int Monitor(mddev_dev_t devlist, |
e0d19036 | 220 | char *mailaddr, char *alert_cmd, |
aa88f531 | 221 | int period, int daemonise, int scan, int oneshot, |
b5e64645 | 222 | char *config, int test, char *pidfile); |
64c4757e | 223 | |
9a9dab36 NB |
224 | extern int Kill(char *dev, int force); |
225 | ||
64c4757e | 226 | extern int md_get_version(int fd); |
e0d19036 | 227 | extern int get_linux_version(void); |
64c4757e | 228 | extern int parse_uuid(char *str, int uuid[4]); |
682c7051 NB |
229 | extern int check_ext2(int fd, char *name); |
230 | extern int check_reiser(int fd, char *name); | |
231 | extern int check_raid(int fd, char *name); | |
64c4757e | 232 | |
dd0781e5 | 233 | extern int get_mdp_major(void); |
8d80900b | 234 | extern int is_standard(char *dev, int *nump); |
dd0781e5 NB |
235 | |
236 | ||
e0d19036 NB |
237 | extern mddev_ident_t conf_get_ident(char *conffile, char *dev); |
238 | extern mddev_dev_t conf_get_devs(char *conffile); | |
239 | extern char *conf_get_mailaddr(char *conffile); | |
240 | extern char *conf_get_program(char *conffile); | |
241 | extern char *conf_line(FILE *file); | |
98c6faba | 242 | extern char *conf_word(FILE *file, int allow_key); |
e0d19036 NB |
243 | extern void free_line(char *line); |
244 | extern int match_oneof(char *devices, char *devname); | |
e0d19036 NB |
245 | extern void uuid_from_super(int uuid[4], mdp_super_t *super); |
246 | extern int same_uuid(int a[4], int b[4]); | |
4b1ac34b NB |
247 | /* extern int compare_super(mdp_super_t *first, mdp_super_t *second);*/ |
248 | extern unsigned long calc_csum(void *super, int bytes); | |
e0d19036 NB |
249 | extern int store_super(int fd, mdp_super_t *super); |
250 | extern int enough(int level, int raid_disks, int avail_disks); | |
251 | extern int ask(char *mesg); | |
252 | ||
cd29a5c8 | 253 | |
56eb10c0 | 254 | extern char *human_size(long long bytes); |
e0d19036 NB |
255 | char *human_size_brief(long long bytes); |
256 | ||
257 | extern void put_md_name(char *name); | |
258 | extern char *get_md_name(int dev); | |
259 | ||
c913b90e | 260 | extern char DefaultConfFile[]; |
b5e64645 NB |
261 | |
262 | extern int open_mddev(char *dev, int autof); | |
263 | ||
264 | ||
265 | #define LEVEL_MULTIPATH (-4) | |
266 | #define LEVEL_LINEAR (-1) | |
267 | #define LEVEL_FAULTY (-5) | |
268 | ||
269 | ||
270 | /* faulty stuff */ | |
271 | ||
272 | #define WriteTransient 0 | |
273 | #define ReadTransient 1 | |
274 | #define WritePersistent 2 | |
275 | #define ReadPersistent 3 | |
276 | #define WriteAll 4 /* doesn't go to device */ | |
277 | #define ReadFixable 5 | |
278 | #define Modes 6 | |
279 | ||
280 | #define ClearErrors 31 | |
281 | #define ClearFaults 30 | |
282 | ||
283 | #define AllPersist 100 /* internal use only */ | |
284 | #define NoPersist 101 | |
285 | ||
286 | #define ModeMask 0x1f | |
287 | #define ModeShift 5 |