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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 | * |
4f589ad0 | 4 | * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de> |
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; | |
aba69144 | 48 | |
682c7051 NB |
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 | } | |
aba69144 | 58 | |
682c7051 NB |
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 | } | |
aba69144 | 72 | return 0; |
64c4757e NB |
73 | } |
74 | ||
435d4ebb LB |
75 | #ifndef MDASSEMBLE |
76 | ||
91f068bf | 77 | int Manage_runstop(char *devname, int fd, int runstop, int quiet) |
64c4757e | 78 | { |
682c7051 NB |
79 | /* Run or stop the array. array must already be configured |
80 | * required >= 0.90.0 | |
81 | */ | |
682c7051 | 82 | mdu_param_t param; /* unused */ |
82b27616 NB |
83 | |
84 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
85 | if (ioctl(fd, STOP_MD, 0)) { | |
91f068bf NB |
86 | if (!quiet) fprintf(stderr, Name ": stopping device %s failed: %s\n", |
87 | devname, strerror(errno)); | |
82b27616 NB |
88 | return 1; |
89 | } | |
90 | } | |
aba69144 | 91 | |
682c7051 NB |
92 | if (md_get_version(fd) < 9000) { |
93 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
94 | return 1; | |
95 | } | |
82b27616 | 96 | /* |
682c7051 NB |
97 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
98 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
99 | devname); | |
100 | return 1; | |
101 | } | |
82b27616 | 102 | */ |
682c7051 NB |
103 | if (runstop>0) { |
104 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
105 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
106 | devname, strerror(errno)); | |
107 | return 1; | |
108 | } | |
8382f19b NB |
109 | if (quiet <= 0) |
110 | fprintf(stderr, Name ": started %s\n", devname); | |
682c7051 | 111 | } else if (runstop < 0){ |
8382f19b NB |
112 | struct map_ent *map = NULL; |
113 | struct stat stb; | |
682c7051 | 114 | if (ioctl(fd, STOP_ARRAY, NULL)) { |
ab56093f | 115 | if (quiet==0) |
91f068bf NB |
116 | fprintf(stderr, Name ": fail to stop array %s: %s\n", |
117 | devname, strerror(errno)); | |
682c7051 NB |
118 | return 1; |
119 | } | |
ab56093f NB |
120 | if (quiet <= 0) |
121 | fprintf(stderr, Name ": stopped %s\n", devname); | |
8382f19b NB |
122 | if (fstat(fd, &stb) == 0) { |
123 | int devnum; | |
124 | if (major(stb.st_rdev) == MD_MAJOR) | |
125 | devnum = minor(stb.st_rdev); | |
126 | else | |
127 | devnum = -1-(minor(stb.st_rdev)>>6); | |
128 | map_delete(&map, devnum); | |
129 | map_write(map); | |
130 | map_free(map); | |
131 | } | |
682c7051 NB |
132 | } |
133 | return 0; | |
64c4757e NB |
134 | } |
135 | ||
dd0781e5 NB |
136 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
137 | { | |
138 | mdu_array_info_t info; | |
139 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
140 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
141 | devname, strerror(errno)); | |
142 | return 1; | |
143 | } | |
144 | if (size >= 0) | |
145 | info.size = size; | |
146 | if (raid_disks > 0) | |
147 | info.raid_disks = raid_disks; | |
148 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
149 | fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n", | |
150 | devname, strerror(errno)); | |
151 | return 1; | |
152 | } | |
153 | return 0; | |
154 | } | |
155 | ||
b5e64645 NB |
156 | int Manage_reconfig(char *devname, int fd, int layout) |
157 | { | |
158 | mdu_array_info_t info; | |
159 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
160 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
161 | devname, strerror(errno)); | |
162 | return 1; | |
163 | } | |
164 | info.layout = layout; | |
165 | printf("layout set to %d\n", info.layout); | |
166 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
167 | fprintf(stderr, Name ": Cannot set layout for %s: %s\n", | |
168 | devname, strerror(errno)); | |
169 | return 1; | |
170 | } | |
171 | return 0; | |
172 | } | |
dd0781e5 | 173 | |
64c4757e | 174 | int Manage_subdevs(char *devname, int fd, |
dab6685f | 175 | mddev_dev_t devlist, int verbose) |
cd29a5c8 | 176 | { |
682c7051 NB |
177 | /* do something to each dev. |
178 | * devmode can be | |
179 | * 'a' - add the device | |
180 | * try HOT_ADD_DISK | |
181 | * If that fails EINVAL, try ADD_NEW_DISK | |
182 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
183 | * device can be 'faulty' or 'detached' in which case all |
184 | * matching devices are removed. | |
682c7051 | 185 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
186 | * device can be 'detached' in which case any device that |
187 | * is inaccessible will be marked faulty. | |
682c7051 NB |
188 | */ |
189 | mdu_array_info_t array; | |
190 | mdu_disk_info_t disc; | |
7a3be72f | 191 | unsigned long long array_size; |
b80da661 | 192 | mddev_dev_t dv, next = NULL; |
682c7051 | 193 | struct stat stb; |
b80da661 | 194 | int j, jnext = 0; |
0fbf459d | 195 | int tfd; |
3da92f27 | 196 | struct supertype *st, *tst; |
fe80f49b NB |
197 | int duuid[4]; |
198 | int ouuid[4]; | |
f94d52f4 | 199 | int lfd = -1; |
682c7051 NB |
200 | |
201 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
202 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
203 | devname); | |
204 | return 1; | |
205 | } | |
3da92f27 | 206 | |
7a3be72f NB |
207 | /* array.size is only 32 bit and may be truncated. |
208 | * So read from sysfs if possible, and record number of sectors | |
209 | */ | |
210 | ||
211 | array_size = get_component_size(fd); | |
212 | if (array_size <= 0) | |
213 | array_size = array.size * 2; | |
214 | ||
1686dc25 | 215 | tst = super_by_fd(fd); |
3da92f27 NB |
216 | if (!tst) { |
217 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
218 | array.major_version, array.minor_version); | |
219 | return 1; | |
220 | } | |
221 | ||
b80da661 | 222 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 223 | unsigned long long ldsize; |
b80da661 NB |
224 | char dvname[20]; |
225 | char *dnprintable = dv->devname; | |
f94d52f4 | 226 | int err; |
4a39c6f2 | 227 | |
b80da661 NB |
228 | next = dv->next; |
229 | jnext = 0; | |
230 | ||
231 | if (strcmp(dv->devname, "failed")==0 || | |
232 | strcmp(dv->devname, "faulty")==0) { | |
233 | if (dv->disposition != 'r') { | |
234 | fprintf(stderr, Name ": %s only meaningful " | |
235 | "with -r, not -%c\n", | |
236 | dv->devname, dv->disposition); | |
237 | return 1; | |
238 | } | |
239 | for (; j < array.raid_disks + array.nr_disks ; j++) { | |
240 | disc.number = j; | |
241 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
242 | continue; | |
243 | if (disc.major == 0 && disc.minor == 0) | |
244 | continue; | |
245 | if ((disc.state & 1) == 0) /* faulty */ | |
246 | continue; | |
247 | stb.st_rdev = makedev(disc.major, disc.minor); | |
248 | next = dv; | |
249 | jnext = j+1; | |
250 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
251 | dnprintable = dvname; | |
252 | break; | |
253 | } | |
254 | if (jnext == 0) | |
255 | continue; | |
256 | } else if (strcmp(dv->devname, "detached") == 0) { | |
257 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
258 | fprintf(stderr, Name ": %s only meaningful " | |
259 | "with -r of -f, not -%c\n", | |
260 | dv->devname, dv->disposition); | |
261 | return 1; | |
262 | } | |
263 | for (; j < array.raid_disks + array.nr_disks; j++) { | |
264 | int sfd; | |
265 | disc.number = j; | |
266 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
267 | continue; | |
268 | if (disc.major == 0 && disc.minor == 0) | |
269 | continue; | |
270 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
271 | sfd = dev_open(dvname, O_RDONLY); | |
272 | if (sfd >= 0) { | |
273 | close(sfd); | |
274 | continue; | |
275 | } | |
276 | if (dv->disposition == 'f' && | |
277 | (disc.state & 1) == 1) /* already faulty */ | |
278 | continue; | |
279 | if (errno != ENXIO) | |
280 | continue; | |
281 | stb.st_rdev = makedev(disc.major, disc.minor); | |
282 | next = dv; | |
283 | jnext = j+1; | |
284 | dnprintable = dvname; | |
285 | break; | |
286 | } | |
287 | if (jnext == 0) | |
288 | continue; | |
289 | } else { | |
290 | j = 0; | |
291 | ||
292 | if (stat(dv->devname, &stb)) { | |
293 | fprintf(stderr, Name ": cannot find %s: %s\n", | |
294 | dv->devname, strerror(errno)); | |
295 | return 1; | |
296 | } | |
297 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
298 | fprintf(stderr, Name ": %s is not a " | |
299 | "block device.\n", | |
300 | dv->devname); | |
301 | return 1; | |
302 | } | |
682c7051 | 303 | } |
cd29a5c8 | 304 | switch(dv->disposition){ |
682c7051 | 305 | default: |
c913b90e NB |
306 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
307 | dv->devname, dv->disposition); | |
682c7051 NB |
308 | return 1; |
309 | case 'a': | |
4a39c6f2 | 310 | /* add the device */ |
f7e7067b | 311 | if (tst->subarray[0]) { |
f7dd881f DW |
312 | fprintf(stderr, Name ": Cannot add disks to a" |
313 | " \'member\' array, perform this" | |
314 | " operation on the parent container\n"); | |
315 | return 1; | |
f94d52f4 | 316 | } |
f277ce36 | 317 | /* Make sure it isn't in use (in 2.6 or later) */ |
6416d527 | 318 | tfd = open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT); |
0fbf459d | 319 | if (tfd < 0) { |
d7eaf49f NB |
320 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
321 | dv->devname, strerror(errno)); | |
322 | return 1; | |
323 | } | |
25037aa8 | 324 | remove_partitions(tfd); |
3da92f27 | 325 | |
1686dc25 | 326 | st = dup_super(tst); |
3da92f27 | 327 | |
fe80f49b | 328 | if (array.not_persistent==0) |
3da92f27 NB |
329 | st->ss->load_super(st, tfd, NULL); |
330 | ||
beae1dfe | 331 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { |
4a39c6f2 NB |
332 | close(tfd); |
333 | return 1; | |
4a39c6f2 | 334 | } |
0fbf459d | 335 | close(tfd); |
fe80f49b | 336 | |
f94d52f4 NB |
337 | |
338 | if (!tst->ss->external && | |
339 | array.major_version == 0 && | |
60d9a174 | 340 | md_get_version(fd)%100 < 2) { |
892debc8 NB |
341 | if (ioctl(fd, HOT_ADD_DISK, |
342 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
343 | if (verbose >= 0) |
344 | fprintf(stderr, Name ": hot added %s\n", | |
345 | dv->devname); | |
892debc8 NB |
346 | continue; |
347 | } | |
348 | ||
cd29a5c8 | 349 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
892debc8 | 350 | dv->devname, strerror(errno)); |
cd29a5c8 NB |
351 | return 1; |
352 | } | |
892debc8 | 353 | |
fe80f49b NB |
354 | if (array.not_persistent == 0) { |
355 | ||
4a39c6f2 | 356 | /* Make sure device is large enough */ |
3da92f27 | 357 | if (tst->ss->avail_size(tst, ldsize/512) < |
7a3be72f | 358 | array_size) { |
4a39c6f2 NB |
359 | fprintf(stderr, Name ": %s not large enough to join array\n", |
360 | dv->devname); | |
361 | return 1; | |
362 | } | |
363 | ||
fe80f49b | 364 | /* need to find a sample superblock to copy, and |
aba69144 | 365 | * a spare slot to use |
fe80f49b | 366 | */ |
3da92f27 | 367 | for (j = 0; j < tst->max_devs; j++) { |
fe80f49b NB |
368 | char *dev; |
369 | int dfd; | |
370 | disc.number = j; | |
371 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
372 | continue; | |
373 | if (disc.major==0 && disc.minor==0) | |
374 | continue; | |
375 | if ((disc.state & 4)==0) continue; /* sync */ | |
376 | /* Looks like a good device to try */ | |
16c6fa80 | 377 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 378 | if (!dev) continue; |
16c6fa80 | 379 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 380 | if (dfd < 0) continue; |
3da92f27 NB |
381 | if (tst->ss->load_super(tst, dfd, |
382 | NULL)) { | |
fe80f49b NB |
383 | close(dfd); |
384 | continue; | |
385 | } | |
892debc8 | 386 | close(dfd); |
fe80f49b NB |
387 | break; |
388 | } | |
3da92f27 | 389 | if (!tst->sb) { |
fe80f49b NB |
390 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); |
391 | return 1; | |
392 | } | |
393 | /* Possibly this device was recently part of the array | |
394 | * and was temporarily removed, and is now being re-added. | |
395 | * If so, we can simply re-add it. | |
396 | */ | |
3da92f27 | 397 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 NB |
398 | |
399 | /* re-add doesn't work for version-1 superblocks | |
400 | * before 2.6.18 :-( | |
401 | */ | |
402 | if (array.major_version == 1 && | |
403 | get_linux_version() <= 2006018) | |
404 | ; | |
3da92f27 NB |
405 | else if (st->sb) { |
406 | st->ss->uuid_from_super(st, ouuid); | |
fe80f49b | 407 | if (memcmp(duuid, ouuid, sizeof(ouuid))==0) { |
4d20d744 NB |
408 | /* looks close enough for now. Kernel |
409 | * will worry about whether a bitmap | |
410 | * based reconstruction is possible. | |
fe80f49b NB |
411 | */ |
412 | struct mdinfo mdi; | |
3da92f27 | 413 | st->ss->getinfo_super(st, &mdi); |
fe80f49b NB |
414 | disc.major = major(stb.st_rdev); |
415 | disc.minor = minor(stb.st_rdev); | |
416 | disc.number = mdi.disk.number; | |
417 | disc.raid_disk = mdi.disk.raid_disk; | |
418 | disc.state = mdi.disk.state; | |
4d20d744 NB |
419 | if (dv->writemostly) |
420 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; | |
fe80f49b NB |
421 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
422 | if (verbose >= 0) | |
423 | fprintf(stderr, Name ": re-added %s\n", dv->devname); | |
308e1801 | 424 | continue; |
fe80f49b NB |
425 | } |
426 | /* fall back on normal-add */ | |
427 | } | |
892debc8 | 428 | } |
4a39c6f2 NB |
429 | } else { |
430 | /* non-persistent. Must ensure that new drive | |
431 | * is at least array.size big. | |
432 | */ | |
7a3be72f | 433 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
434 | fprintf(stderr, Name ": %s not large enough to join array\n", |
435 | dv->devname); | |
436 | return 1; | |
437 | } | |
892debc8 | 438 | } |
7eae7080 NB |
439 | /* in 2.6.17 and earlier, version-1 superblocks won't |
440 | * use the number we write, but will choose a free number. | |
441 | * we must choose the same free number, which requires | |
442 | * starting at 'raid_disks' and counting up | |
443 | */ | |
3da92f27 | 444 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 445 | disc.number = j; |
682c7051 NB |
446 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
447 | break; | |
448 | if (disc.major==0 && disc.minor==0) | |
449 | break; | |
450 | if (disc.state & 8) /* removed */ | |
451 | break; | |
452 | } | |
0df46c2a NB |
453 | disc.major = major(stb.st_rdev); |
454 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
455 | disc.number =j; |
456 | disc.state = 0; | |
fe80f49b | 457 | if (array.not_persistent==0) { |
111d01fc | 458 | int dfd; |
fe80f49b NB |
459 | if (dv->writemostly) |
460 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; | |
6416d527 | 461 | dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
111d01fc NB |
462 | tst->ss->add_to_super(tst, &disc, dfd, |
463 | dv->devname); | |
464 | /* write_init_super will close 'dfd' */ | |
465 | if (tst->ss->write_init_super(tst)) | |
fe80f49b NB |
466 | return 1; |
467 | } else if (dv->re_add) { | |
468 | /* this had better be raid1. | |
469 | * As we are "--re-add"ing we must find a spare slot | |
470 | * to fill. | |
471 | */ | |
472 | char *used = malloc(array.raid_disks); | |
473 | memset(used, 0, array.raid_disks); | |
3da92f27 | 474 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
475 | mdu_disk_info_t disc2; |
476 | disc2.number = j; | |
477 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
478 | continue; | |
479 | if (disc2.major==0 && disc2.minor==0) | |
480 | continue; | |
481 | if (disc2.state & 8) /* removed */ | |
482 | continue; | |
483 | if (disc2.raid_disk < 0) | |
484 | continue; | |
485 | if (disc2.raid_disk > array.raid_disks) | |
486 | continue; | |
487 | used[disc2.raid_disk] = 1; | |
488 | } | |
489 | for (j=0 ; j<array.raid_disks; j++) | |
490 | if (!used[j]) { | |
491 | disc.raid_disk = j; | |
492 | disc.state |= (1<<MD_DISK_SYNC); | |
493 | break; | |
494 | } | |
495 | } | |
d8def61c NB |
496 | if (dv->writemostly) |
497 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); | |
682c7051 | 498 | if (ioctl(fd,ADD_NEW_DISK, &disc)) { |
f277ce36 NB |
499 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", |
500 | dv->devname, j, strerror(errno)); | |
682c7051 NB |
501 | return 1; |
502 | } | |
dab6685f NB |
503 | if (verbose >= 0) |
504 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
505 | break; |
506 | ||
507 | case 'r': | |
508 | /* hot remove */ | |
f7e7067b | 509 | if (tst->subarray[0]) { |
f7dd881f DW |
510 | fprintf(stderr, Name ": Cannot remove disks from a" |
511 | " \'member\' array, perform this" | |
512 | " operation on the parent container\n"); | |
513 | return 1; | |
f94d52f4 NB |
514 | } |
515 | if (tst->ss->external) { | |
516 | /* To remove a device from a container, we must | |
517 | * check that it isn't in use in an array. | |
518 | * This involves looking in the 'holders' | |
519 | * directory - there must be just one entry, | |
520 | * the container. | |
521 | * To ensure that it doesn't get used as a | |
522 | * hold spare while we are checking, we | |
523 | * get an O_EXCL open on the container | |
524 | */ | |
525 | int dnum = fd2devnum(fd); | |
526 | lfd = open_dev_excl(dnum); | |
527 | if (lfd < 0) { | |
528 | fprintf(stderr, Name | |
529 | ": Cannot get exclusive access " | |
530 | " to container - odd\n"); | |
531 | return 1; | |
532 | } | |
533 | if (!sysfs_unique_holder(dnum, stb.st_rdev)) { | |
534 | fprintf(stderr, Name | |
535 | ": %s is %s, cannot remove.\n", | |
536 | dnprintable, | |
537 | errno == EEXIST ? "still in use": | |
538 | "not a member"); | |
539 | close(lfd); | |
540 | return 1; | |
541 | } | |
542 | } | |
82b27616 | 543 | /* FIXME check that it is a current member */ |
f94d52f4 NB |
544 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); |
545 | if (err && errno == ENODEV) { | |
546 | /* Old kernels rejected this if no personality | |
547 | * registered */ | |
548 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
549 | struct mdinfo *dv = NULL; | |
550 | if (sra) | |
551 | dv = sra->devs; | |
552 | for ( ; dv ; dv=dv->next) | |
553 | if (dv->disk.major == major(stb.st_rdev) && | |
554 | dv->disk.minor == minor(stb.st_rdev)) | |
555 | break; | |
556 | if (dv) | |
557 | err = sysfs_set_str(sra, dv, | |
558 | "state", "remove"); | |
559 | else | |
560 | err = -1; | |
561 | if (sra) | |
562 | sysfs_free(sra); | |
563 | } | |
564 | if (err) { | |
b80da661 NB |
565 | fprintf(stderr, Name ": hot remove failed " |
566 | "for %s: %s\n", dnprintable, | |
567 | strerror(errno)); | |
f94d52f4 NB |
568 | if (lfd >= 0) |
569 | close(lfd); | |
682c7051 NB |
570 | return 1; |
571 | } | |
f94d52f4 | 572 | close(lfd); |
dab6685f | 573 | if (verbose >= 0) |
b80da661 NB |
574 | fprintf(stderr, Name ": hot removed %s\n", |
575 | dnprintable); | |
682c7051 NB |
576 | break; |
577 | ||
578 | case 'f': /* set faulty */ | |
579 | /* FIXME check current member */ | |
cd29a5c8 | 580 | if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) { |
b83d95f3 | 581 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 582 | dnprintable, strerror(errno)); |
682c7051 NB |
583 | return 1; |
584 | } | |
dab6685f NB |
585 | if (verbose >= 0) |
586 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 587 | dnprintable, devname); |
682c7051 NB |
588 | break; |
589 | } | |
590 | } | |
591 | return 0; | |
aba69144 | 592 | |
64c4757e | 593 | } |
1f48664b NB |
594 | |
595 | int autodetect(void) | |
596 | { | |
597 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
598 | int rv = 1; | |
599 | int fd = dev_open("9:0", O_RDONLY); | |
600 | if (fd >= 0) { | |
601 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
602 | rv = 0; | |
603 | close(fd); | |
604 | } | |
605 | return rv; | |
606 | } | |
435d4ebb | 607 | #endif |