]>
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 | ||
9a9dab36 | 30 | #include "mdadm.h" |
682c7051 NB |
31 | #include "md_u.h" |
32 | #include "md_p.h" | |
64c4757e | 33 | |
82b27616 NB |
34 | #define REGISTER_DEV _IO (MD_MAJOR, 1) |
35 | #define START_MD _IO (MD_MAJOR, 2) | |
36 | #define STOP_MD _IO (MD_MAJOR, 3) | |
37 | ||
64c4757e NB |
38 | int Manage_ro(char *devname, int fd, int readonly) |
39 | { | |
682c7051 NB |
40 | /* switch to readonly or rw |
41 | * | |
42 | * requires >= 0.90.0 | |
43 | * first check that array is runing | |
44 | * use RESTART_ARRAY_RW or STOP_ARRAY_RO | |
45 | * | |
46 | */ | |
47 | mdu_array_info_t array; | |
48 | ||
49 | if (md_get_version(fd) < 9000) { | |
50 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
51 | return 1; | |
52 | } | |
53 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
54 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
55 | devname); | |
56 | return 1; | |
57 | } | |
58 | ||
59 | if (readonly>0) { | |
60 | if (ioctl(fd, STOP_ARRAY_RO, NULL)) { | |
61 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
62 | devname, strerror(errno)); | |
63 | return 1; | |
64 | } | |
65 | } else if (readonly < 0) { | |
66 | if (ioctl(fd, RESTART_ARRAY_RW, NULL)) { | |
82b27616 | 67 | fprintf(stderr, Name ": failed to set writable for %s: %s\n", |
682c7051 NB |
68 | devname, strerror(errno)); |
69 | return 1; | |
70 | } | |
71 | } | |
72 | return 0; | |
64c4757e NB |
73 | } |
74 | ||
75 | int Manage_runstop(char *devname, int fd, int runstop) | |
76 | { | |
682c7051 NB |
77 | /* Run or stop the array. array must already be configured |
78 | * required >= 0.90.0 | |
79 | */ | |
682c7051 | 80 | mdu_param_t param; /* unused */ |
82b27616 NB |
81 | |
82 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
83 | if (ioctl(fd, STOP_MD, 0)) { | |
84 | fprintf(stderr, Name ": stopping device %s failed: %s\n", | |
85 | devname, strerror(errno)); | |
86 | return 1; | |
87 | } | |
88 | } | |
682c7051 NB |
89 | |
90 | if (md_get_version(fd) < 9000) { | |
91 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
92 | return 1; | |
93 | } | |
82b27616 | 94 | /* |
682c7051 NB |
95 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
96 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
97 | devname); | |
98 | return 1; | |
99 | } | |
82b27616 | 100 | */ |
682c7051 NB |
101 | if (runstop>0) { |
102 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
103 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
104 | devname, strerror(errno)); | |
105 | return 1; | |
106 | } | |
107 | } else if (runstop < 0){ | |
108 | if (ioctl(fd, STOP_ARRAY, NULL)) { | |
52826846 | 109 | fprintf(stderr, Name ": fail to stop array %s: %s\n", |
682c7051 NB |
110 | devname, strerror(errno)); |
111 | return 1; | |
112 | } | |
113 | } | |
114 | return 0; | |
64c4757e NB |
115 | } |
116 | ||
dd0781e5 NB |
117 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
118 | { | |
119 | mdu_array_info_t info; | |
120 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
121 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
122 | devname, strerror(errno)); | |
123 | return 1; | |
124 | } | |
125 | if (size >= 0) | |
126 | info.size = size; | |
127 | if (raid_disks > 0) | |
128 | info.raid_disks = raid_disks; | |
129 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
130 | fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n", | |
131 | devname, strerror(errno)); | |
132 | return 1; | |
133 | } | |
134 | return 0; | |
135 | } | |
136 | ||
b5e64645 NB |
137 | int Manage_reconfig(char *devname, int fd, int layout) |
138 | { | |
139 | mdu_array_info_t info; | |
140 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
141 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
142 | devname, strerror(errno)); | |
143 | return 1; | |
144 | } | |
145 | info.layout = layout; | |
146 | printf("layout set to %d\n", info.layout); | |
147 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
148 | fprintf(stderr, Name ": Cannot set layout for %s: %s\n", | |
149 | devname, strerror(errno)); | |
150 | return 1; | |
151 | } | |
152 | return 0; | |
153 | } | |
dd0781e5 | 154 | |
64c4757e | 155 | int Manage_subdevs(char *devname, int fd, |
cd29a5c8 NB |
156 | mddev_dev_t devlist) |
157 | { | |
682c7051 NB |
158 | /* do something to each dev. |
159 | * devmode can be | |
160 | * 'a' - add the device | |
161 | * try HOT_ADD_DISK | |
162 | * If that fails EINVAL, try ADD_NEW_DISK | |
163 | * 'r' - remove the device HOT_REMOVE_DISK | |
164 | * 'f' - set the device faulty SET_DISK_FAULTY | |
165 | */ | |
166 | mdu_array_info_t array; | |
167 | mdu_disk_info_t disc; | |
cd29a5c8 | 168 | mddev_dev_t dv; |
682c7051 | 169 | struct stat stb; |
c913b90e | 170 | int j; |
0fbf459d | 171 | int tfd; |
892debc8 NB |
172 | struct supertype *st; |
173 | void *dsuper = NULL; | |
682c7051 NB |
174 | |
175 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
176 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
177 | devname); | |
178 | return 1; | |
179 | } | |
cd29a5c8 NB |
180 | for (dv = devlist ; dv; dv=dv->next) { |
181 | if (stat(dv->devname, &stb)) { | |
682c7051 | 182 | fprintf(stderr, Name ": cannot find %s: %s\n", |
cd29a5c8 | 183 | dv->devname, strerror(errno)); |
682c7051 NB |
184 | return 1; |
185 | } | |
186 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
187 | fprintf(stderr, Name ": %s is not a block device.\n", | |
cd29a5c8 | 188 | dv->devname); |
682c7051 NB |
189 | return 1; |
190 | } | |
cd29a5c8 | 191 | switch(dv->disposition){ |
682c7051 | 192 | default: |
c913b90e NB |
193 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
194 | dv->devname, dv->disposition); | |
682c7051 NB |
195 | return 1; |
196 | case 'a': | |
197 | /* add the device - hot or cold */ | |
d7eaf49f | 198 | /* Make sure it isn' in use (in 2.6 or later) */ |
0fbf459d NB |
199 | tfd = open(dv->devname, O_RDONLY|O_EXCL); |
200 | if (tfd < 0) { | |
d7eaf49f NB |
201 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
202 | dv->devname, strerror(errno)); | |
203 | return 1; | |
204 | } | |
0fbf459d | 205 | close(tfd); |
892debc8 NB |
206 | if (array.major_version == 0) { |
207 | if (ioctl(fd, HOT_ADD_DISK, | |
208 | (unsigned long)stb.st_rdev)==0) { | |
209 | fprintf(stderr, Name ": hot added %s\n", | |
210 | dv->devname); | |
211 | continue; | |
212 | } | |
213 | ||
cd29a5c8 | 214 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
892debc8 | 215 | dv->devname, strerror(errno)); |
cd29a5c8 NB |
216 | return 1; |
217 | } | |
892debc8 NB |
218 | |
219 | /* need to find a sample superblock to copy, and | |
220 | * a spare slot to use | |
682c7051 | 221 | */ |
892debc8 NB |
222 | st = super_by_version(array.major_version, |
223 | array.minor_version); | |
224 | if (!st) { | |
225 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
226 | array.major_version, array.minor_version); | |
227 | return 1; | |
228 | } | |
229 | for (j=0; j<array.active_disks+array.spare_disks+ array.failed_disks; j++) { | |
230 | char *dev; | |
231 | int dfd; | |
232 | disc.number = j; | |
233 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
234 | continue; | |
235 | if (disc.major==0 && disc.minor==0) | |
236 | continue; | |
237 | if ((disc.state & 4)==0) continue; /* sync */ | |
238 | /* Looks like a good device to try */ | |
239 | dev = map_dev(disc.major, disc.minor); | |
240 | if (!dev) continue; | |
241 | dfd = open(dev, O_RDONLY); | |
242 | if (dfd < 0) continue; | |
243 | if (st->ss->load_super(st, dfd, &dsuper, NULL)) { | |
244 | close(dfd); | |
245 | continue; | |
246 | } | |
247 | close(dfd); | |
248 | break; | |
249 | } | |
250 | if (!dsuper) { | |
251 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); | |
252 | return 1; | |
253 | } | |
682c7051 | 254 | for (j=0; j<array.nr_disks; j++) { |
aa88f531 | 255 | disc.number = j; |
682c7051 NB |
256 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
257 | break; | |
258 | if (disc.major==0 && disc.minor==0) | |
259 | break; | |
260 | if (disc.state & 8) /* removed */ | |
261 | break; | |
262 | } | |
0df46c2a NB |
263 | disc.major = major(stb.st_rdev); |
264 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
265 | disc.number =j; |
266 | disc.state = 0; | |
267 | if (st->ss->write_init_super(st, dsuper, &disc, dv->devname)) | |
268 | return 1; | |
682c7051 | 269 | if (ioctl(fd,ADD_NEW_DISK, &disc)) { |
b83d95f3 | 270 | fprintf(stderr, Name ": add new device failed for %s: %s\n", |
cd29a5c8 | 271 | dv->devname, strerror(errno)); |
682c7051 NB |
272 | return 1; |
273 | } | |
cd29a5c8 | 274 | fprintf(stderr, Name ": added %s\n", dv->devname); |
682c7051 NB |
275 | break; |
276 | ||
277 | case 'r': | |
278 | /* hot remove */ | |
82b27616 | 279 | /* FIXME check that it is a current member */ |
cd29a5c8 | 280 | if (ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev)) { |
682c7051 | 281 | fprintf(stderr, Name ": hot remove failed for %s: %s\n", |
cd29a5c8 | 282 | dv->devname, strerror(errno)); |
682c7051 NB |
283 | return 1; |
284 | } | |
cd29a5c8 | 285 | fprintf(stderr, Name ": hot removed %s\n", dv->devname); |
682c7051 NB |
286 | break; |
287 | ||
288 | case 'f': /* set faulty */ | |
289 | /* FIXME check current member */ | |
cd29a5c8 | 290 | if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) { |
b83d95f3 | 291 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
cd29a5c8 | 292 | dv->devname, strerror(errno)); |
682c7051 NB |
293 | return 1; |
294 | } | |
295 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
cd29a5c8 | 296 | dv->devname, devname); |
682c7051 NB |
297 | break; |
298 | } | |
299 | } | |
300 | return 0; | |
301 | ||
64c4757e | 302 | } |