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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 | * |
e736b623 | 4 | * Copyright (C) 2001-2009 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 | |
e736b623 | 22 | * Email: <neilb@suse.de> |
64c4757e NB |
23 | */ |
24 | ||
9a9dab36 | 25 | #include "mdadm.h" |
682c7051 NB |
26 | #include "md_u.h" |
27 | #include "md_p.h" | |
4ccad7b1 | 28 | #include <ctype.h> |
64c4757e | 29 | |
82b27616 NB |
30 | #define REGISTER_DEV _IO (MD_MAJOR, 1) |
31 | #define START_MD _IO (MD_MAJOR, 2) | |
32 | #define STOP_MD _IO (MD_MAJOR, 3) | |
33 | ||
64c4757e NB |
34 | int Manage_ro(char *devname, int fd, int readonly) |
35 | { | |
682c7051 NB |
36 | /* switch to readonly or rw |
37 | * | |
38 | * requires >= 0.90.0 | |
39 | * first check that array is runing | |
40 | * use RESTART_ARRAY_RW or STOP_ARRAY_RO | |
41 | * | |
42 | */ | |
43 | mdu_array_info_t array; | |
0e600426 | 44 | #ifndef MDASSEMBLE |
e9dd1598 | 45 | struct mdinfo *mdi; |
0e600426 | 46 | #endif |
b73e45ae | 47 | int rv = 0; |
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 | } | |
0e600426 | 53 | #ifndef MDASSEMBLE |
e9dd1598 N |
54 | /* If this is an externally-manage array, we need to modify the |
55 | * metadata_version so that mdmon doesn't undo our change. | |
56 | */ | |
57 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); | |
58 | if (mdi && | |
59 | mdi->array.major_version == -1 && | |
e9dd1598 N |
60 | is_subarray(mdi->text_version)) { |
61 | char vers[64]; | |
62 | strcpy(vers, "external:"); | |
63 | strcat(vers, mdi->text_version); | |
64 | if (readonly > 0) { | |
65 | int rv; | |
66 | /* We set readonly ourselves. */ | |
67 | vers[9] = '-'; | |
68 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
69 | ||
70 | close(fd); | |
71 | rv = sysfs_set_str(mdi, NULL, "array_state", "readonly"); | |
72 | ||
73 | if (rv < 0) { | |
74 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
75 | devname, strerror(errno)); | |
76 | ||
77 | vers[9] = mdi->text_version[0]; | |
78 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
b73e45ae JS |
79 | rv = 1; |
80 | goto out; | |
e9dd1598 N |
81 | } |
82 | } else { | |
83 | char *cp; | |
84 | /* We cannot set read/write - must signal mdmon */ | |
85 | vers[9] = '/'; | |
86 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
87 | ||
88 | cp = strchr(vers+10, '/'); | |
89 | if (*cp) | |
90 | *cp = 0; | |
91 | ping_monitor(vers+10); | |
9ea5a252 DW |
92 | if (mdi->array.level <= 0) |
93 | sysfs_set_str(mdi, NULL, "array_state", "active"); | |
e9dd1598 | 94 | } |
b73e45ae | 95 | goto out; |
e9dd1598 | 96 | } |
0e600426 | 97 | #endif |
682c7051 NB |
98 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
99 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
100 | devname); | |
b73e45ae JS |
101 | rv = 1; |
102 | goto out; | |
682c7051 | 103 | } |
aba69144 | 104 | |
682c7051 NB |
105 | if (readonly>0) { |
106 | if (ioctl(fd, STOP_ARRAY_RO, NULL)) { | |
107 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
108 | devname, strerror(errno)); | |
b73e45ae JS |
109 | rv = 1; |
110 | goto out; | |
682c7051 NB |
111 | } |
112 | } else if (readonly < 0) { | |
113 | if (ioctl(fd, RESTART_ARRAY_RW, NULL)) { | |
82b27616 | 114 | fprintf(stderr, Name ": failed to set writable for %s: %s\n", |
682c7051 | 115 | devname, strerror(errno)); |
b73e45ae JS |
116 | rv = 1; |
117 | goto out; | |
682c7051 NB |
118 | } |
119 | } | |
b73e45ae JS |
120 | out: |
121 | #ifndef MDASSEMBLE | |
122 | if (mdi) | |
123 | sysfs_free(mdi); | |
124 | #endif | |
125 | return rv; | |
64c4757e NB |
126 | } |
127 | ||
435d4ebb LB |
128 | #ifndef MDASSEMBLE |
129 | ||
4ccad7b1 N |
130 | static void remove_devices(int devnum, char *path) |
131 | { | |
b1702f48 N |
132 | /* |
133 | * Remove names at 'path' - possibly with | |
134 | * partition suffixes - which link to the 'standard' | |
135 | * name for devnum. These were probably created | |
136 | * by mdadm when the array was assembled. | |
4ccad7b1 N |
137 | */ |
138 | char base[40]; | |
139 | char *path2; | |
140 | char link[1024]; | |
141 | int n; | |
142 | int part; | |
143 | char *be; | |
144 | char *pe; | |
145 | ||
b1702f48 N |
146 | if (!path) |
147 | return; | |
148 | ||
4ccad7b1 N |
149 | if (devnum >= 0) |
150 | sprintf(base, "/dev/md%d", devnum); | |
151 | else | |
152 | sprintf(base, "/dev/md_d%d", -1-devnum); | |
153 | be = base + strlen(base); | |
b1702f48 N |
154 | |
155 | path2 = malloc(strlen(path)+20); | |
156 | strcpy(path2, path); | |
157 | pe = path2 + strlen(path2); | |
4ccad7b1 N |
158 | |
159 | for (part = 0; part < 16; part++) { | |
160 | if (part) { | |
161 | sprintf(be, "p%d", part); | |
b1702f48 N |
162 | |
163 | if (isdigit(pe[-1])) | |
164 | sprintf(pe, "p%d", part); | |
165 | else | |
166 | sprintf(pe, "%d", part); | |
4ccad7b1 | 167 | } |
b1702f48 | 168 | n = readlink(path2, link, sizeof(link)); |
d9ca03e9 | 169 | if (n > 0 && (int)strlen(base) == n && |
b1702f48 N |
170 | strncmp(link, base, n) == 0) |
171 | unlink(path2); | |
4ccad7b1 | 172 | } |
0eb26465 | 173 | free(path2); |
4ccad7b1 N |
174 | } |
175 | ||
176 | ||
91f068bf | 177 | int Manage_runstop(char *devname, int fd, int runstop, int quiet) |
64c4757e | 178 | { |
682c7051 NB |
179 | /* Run or stop the array. array must already be configured |
180 | * required >= 0.90.0 | |
4b9d39fc N |
181 | * Only print failure messages if quiet == 0; |
182 | * quiet > 0 means really be quiet | |
183 | * quiet < 0 means we will try again if it fails. | |
682c7051 | 184 | */ |
682c7051 | 185 | mdu_param_t param; /* unused */ |
82b27616 NB |
186 | |
187 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
188 | if (ioctl(fd, STOP_MD, 0)) { | |
4b9d39fc N |
189 | if (quiet == 0) fprintf(stderr, |
190 | Name ": stopping device %s " | |
191 | "failed: %s\n", | |
192 | devname, strerror(errno)); | |
82b27616 NB |
193 | return 1; |
194 | } | |
195 | } | |
aba69144 | 196 | |
682c7051 NB |
197 | if (md_get_version(fd) < 9000) { |
198 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
199 | return 1; | |
200 | } | |
82b27616 | 201 | /* |
682c7051 NB |
202 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
203 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
204 | devname); | |
205 | return 1; | |
206 | } | |
82b27616 | 207 | */ |
682c7051 NB |
208 | if (runstop>0) { |
209 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
210 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
211 | devname, strerror(errno)); | |
212 | return 1; | |
213 | } | |
8382f19b NB |
214 | if (quiet <= 0) |
215 | fprintf(stderr, Name ": started %s\n", devname); | |
682c7051 | 216 | } else if (runstop < 0){ |
8382f19b NB |
217 | struct map_ent *map = NULL; |
218 | struct stat stb; | |
daf7a3ce | 219 | struct mdinfo *mdi; |
4ccad7b1 | 220 | int devnum; |
eb0af526 N |
221 | int err; |
222 | int count; | |
daf7a3ce NB |
223 | /* If this is an mdmon managed array, just write 'inactive' |
224 | * to the array state and let mdmon clear up. | |
225 | */ | |
4ccad7b1 | 226 | devnum = fd2devnum(fd); |
eb0af526 N |
227 | /* Get EXCL access first. If this fails, then attempting |
228 | * to stop is probably a bad idea. | |
229 | */ | |
230 | close(fd); | |
231 | fd = open(devname, O_RDONLY|O_EXCL); | |
232 | if (fd < 0 || fd2devnum(fd) != devnum) { | |
233 | if (fd >= 0) | |
234 | close(fd); | |
235 | fprintf(stderr, | |
236 | Name ": Cannot get exclusive access to %s:" | |
1ae42d9d KW |
237 | "Perhaps a running " |
238 | "process, mounted filesystem " | |
239 | "or active volume group?\n", | |
eb0af526 N |
240 | devname); |
241 | return 1; | |
242 | } | |
daf7a3ce NB |
243 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); |
244 | if (mdi && | |
245 | mdi->array.level > 0 && | |
3c558363 | 246 | is_subarray(mdi->text_version)) { |
1ae42d9d | 247 | int err; |
daf7a3ce NB |
248 | /* This is mdmon managed. */ |
249 | close(fd); | |
1ae42d9d KW |
250 | |
251 | count = 25; | |
252 | while (count && | |
253 | (err = sysfs_set_str(mdi, NULL, | |
254 | "array_state", | |
255 | "inactive")) < 0 | |
256 | && errno == EBUSY) { | |
257 | usleep(200000); | |
258 | count--; | |
259 | } | |
260 | if (err && !quiet) { | |
261 | fprintf(stderr, Name | |
262 | ": failed to stop array %s: %s\n", | |
263 | devname, strerror(errno)); | |
daf7a3ce NB |
264 | return 1; |
265 | } | |
266 | ||
267 | /* Give monitor a chance to act */ | |
c94709e8 | 268 | ping_monitor(mdi->text_version); |
daf7a3ce | 269 | |
eb0af526 N |
270 | fd = open_dev_excl(devnum); |
271 | if (fd < 0) { | |
272 | fprintf(stderr, Name | |
273 | ": failed to completely stop %s" | |
274 | ": Device is busy\n", | |
275 | devname); | |
276 | return 1; | |
277 | } | |
ada6c239 N |
278 | } else if (mdi && |
279 | mdi->array.major_version == -1 && | |
280 | mdi->array.minor_version == -2 && | |
3c558363 | 281 | !is_subarray(mdi->text_version)) { |
430ea469 | 282 | struct mdstat_ent *mds, *m; |
ada6c239 N |
283 | /* container, possibly mdmon-managed. |
284 | * Make sure mdmon isn't opening it, which | |
285 | * would interfere with the 'stop' | |
286 | */ | |
287 | ping_monitor(mdi->sys_name); | |
430ea469 N |
288 | |
289 | /* now check that there are no existing arrays | |
290 | * which are members of this array | |
291 | */ | |
292 | mds = mdstat_read(0, 0); | |
293 | for (m=mds; m; m=m->next) | |
294 | if (m->metadata_version && | |
295 | strncmp(m->metadata_version, "external:", 9)==0 && | |
296 | is_subarray(m->metadata_version+9) && | |
297 | devname2devnum(m->metadata_version+10) == devnum) { | |
298 | if (!quiet) | |
299 | fprintf(stderr, Name | |
300 | ": Cannot stop container %s: " | |
301 | "member %s still active\n", | |
302 | devname, m->dev); | |
303 | free_mdstat(mds); | |
304 | if (mdi) | |
305 | sysfs_free(mdi); | |
306 | return 1; | |
307 | } | |
daf7a3ce | 308 | } |
daf7a3ce | 309 | |
eb0af526 N |
310 | /* As we have an O_EXCL open, any use of the device |
311 | * which blocks STOP_ARRAY is probably a transient use, | |
312 | * so it is reasonable to retry for a while - 5 seconds. | |
313 | */ | |
fb0d4b9c | 314 | count = 25; err = 0; |
eb0af526 N |
315 | while (count && fd >= 0 |
316 | && (err = ioctl(fd, STOP_ARRAY, NULL)) < 0 | |
317 | && errno == EBUSY) { | |
318 | usleep(200000); | |
319 | count --; | |
320 | } | |
321 | if (fd >= 0 && err) { | |
37ea3936 | 322 | if (quiet == 0) { |
daf7a3ce | 323 | fprintf(stderr, Name |
4b9d39fc | 324 | ": failed to stop array %s: %s\n", |
91f068bf | 325 | devname, strerror(errno)); |
d927f3c4 NB |
326 | if (errno == EBUSY) |
327 | fprintf(stderr, "Perhaps a running " | |
328 | "process, mounted filesystem " | |
329 | "or active volume group?\n"); | |
330 | } | |
97590376 N |
331 | if (mdi) |
332 | sysfs_free(mdi); | |
682c7051 NB |
333 | return 1; |
334 | } | |
97590376 | 335 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array |
d49410d3 N |
336 | * was stopped, so We'll do it here just to be sure. Drop any |
337 | * partitions as well... | |
97590376 | 338 | */ |
d49410d3 N |
339 | if (fd >= 0) |
340 | ioctl(fd, BLKRRPART, 0); | |
97590376 N |
341 | if (mdi) |
342 | sysfs_uevent(mdi, "change"); | |
daf7a3ce | 343 | |
4ccad7b1 N |
344 | |
345 | if (devnum != NoMdDev && | |
346 | (stat("/dev/.udev", &stb) != 0 || | |
347 | check_env("MDADM_NO_UDEV"))) { | |
348 | struct map_ent *mp = map_by_devnum(&map, devnum); | |
349 | remove_devices(devnum, mp ? mp->path : NULL); | |
350 | } | |
351 | ||
352 | ||
ab56093f NB |
353 | if (quiet <= 0) |
354 | fprintf(stderr, Name ": stopped %s\n", devname); | |
4eb26970 DW |
355 | map_lock(&map); |
356 | map_remove(&map, devnum); | |
357 | map_unlock(&map); | |
682c7051 NB |
358 | } |
359 | return 0; | |
64c4757e NB |
360 | } |
361 | ||
dd0781e5 NB |
362 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
363 | { | |
364 | mdu_array_info_t info; | |
365 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
366 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
367 | devname, strerror(errno)); | |
368 | return 1; | |
369 | } | |
370 | if (size >= 0) | |
371 | info.size = size; | |
372 | if (raid_disks > 0) | |
373 | info.raid_disks = raid_disks; | |
374 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
375 | fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n", | |
376 | devname, strerror(errno)); | |
377 | return 1; | |
378 | } | |
379 | return 0; | |
b5e64645 | 380 | } |
dd0781e5 | 381 | |
64c4757e | 382 | int Manage_subdevs(char *devname, int fd, |
833bb0f8 | 383 | struct mddev_dev *devlist, int verbose, int test, |
11b391ec | 384 | char *update, int force) |
cd29a5c8 | 385 | { |
682c7051 NB |
386 | /* do something to each dev. |
387 | * devmode can be | |
388 | * 'a' - add the device | |
389 | * try HOT_ADD_DISK | |
390 | * If that fails EINVAL, try ADD_NEW_DISK | |
391 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
392 | * device can be 'faulty' or 'detached' in which case all |
393 | * matching devices are removed. | |
682c7051 | 394 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
395 | * device can be 'detached' in which case any device that |
396 | * is inaccessible will be marked faulty. | |
98d27e39 N |
397 | * For 'f' and 'r', the device can also be a kernel-internal |
398 | * name such as 'sdb'. | |
682c7051 | 399 | */ |
a655e550 | 400 | struct mddev_dev *add_devlist = NULL; |
682c7051 NB |
401 | mdu_array_info_t array; |
402 | mdu_disk_info_t disc; | |
7a3be72f | 403 | unsigned long long array_size; |
a655e550 | 404 | struct mddev_dev *dv, *next = NULL; |
682c7051 | 405 | struct stat stb; |
b80da661 | 406 | int j, jnext = 0; |
cfad27a9 | 407 | int tfd = -1; |
3da92f27 | 408 | struct supertype *st, *tst; |
4725bc31 | 409 | char *subarray = NULL; |
fe80f49b NB |
410 | int duuid[4]; |
411 | int ouuid[4]; | |
f94d52f4 | 412 | int lfd = -1; |
98d27e39 | 413 | int sysfd = -1; |
7d2e6486 | 414 | int count = 0; /* number of actions taken */ |
682c7051 NB |
415 | |
416 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
417 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
418 | devname); | |
419 | return 1; | |
420 | } | |
3da92f27 | 421 | |
7a3be72f NB |
422 | /* array.size is only 32 bit and may be truncated. |
423 | * So read from sysfs if possible, and record number of sectors | |
424 | */ | |
425 | ||
426 | array_size = get_component_size(fd); | |
427 | if (array_size <= 0) | |
428 | array_size = array.size * 2; | |
429 | ||
4725bc31 | 430 | tst = super_by_fd(fd, &subarray); |
3da92f27 NB |
431 | if (!tst) { |
432 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
433 | array.major_version, array.minor_version); | |
434 | return 1; | |
435 | } | |
436 | ||
b3b4e8a7 | 437 | stb.st_rdev = 0; |
b80da661 | 438 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 439 | unsigned long long ldsize; |
b80da661 NB |
440 | char dvname[20]; |
441 | char *dnprintable = dv->devname; | |
a4e13010 | 442 | char *add_dev = dv->devname; |
f94d52f4 | 443 | int err; |
8453e704 | 444 | int re_add_failed = 0; |
4a39c6f2 | 445 | |
b80da661 NB |
446 | next = dv->next; |
447 | jnext = 0; | |
448 | ||
449 | if (strcmp(dv->devname, "failed")==0 || | |
450 | strcmp(dv->devname, "faulty")==0) { | |
9e6d9291 | 451 | int remaining_disks = array.nr_disks; |
b80da661 NB |
452 | if (dv->disposition != 'r') { |
453 | fprintf(stderr, Name ": %s only meaningful " | |
454 | "with -r, not -%c\n", | |
455 | dv->devname, dv->disposition); | |
456 | return 1; | |
457 | } | |
9e6d9291 | 458 | for (; j < 1024 && remaining_disks > 0; j++) { |
f21e18ca | 459 | unsigned dev; |
b80da661 NB |
460 | disc.number = j; |
461 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
462 | continue; | |
463 | if (disc.major == 0 && disc.minor == 0) | |
464 | continue; | |
9e6d9291 | 465 | remaining_disks --; |
b80da661 NB |
466 | if ((disc.state & 1) == 0) /* faulty */ |
467 | continue; | |
b3b4e8a7 N |
468 | dev = makedev(disc.major, disc.minor); |
469 | if (stb.st_rdev == dev) | |
470 | /* already did that one */ | |
471 | continue; | |
472 | stb.st_rdev = dev; | |
b80da661 | 473 | next = dv; |
b3b4e8a7 N |
474 | /* same slot again next time - things might |
475 | * have reshuffled */ | |
476 | jnext = j; | |
b80da661 NB |
477 | sprintf(dvname,"%d:%d", disc.major, disc.minor); |
478 | dnprintable = dvname; | |
479 | break; | |
480 | } | |
5b660791 | 481 | if (next != dv) |
b80da661 NB |
482 | continue; |
483 | } else if (strcmp(dv->devname, "detached") == 0) { | |
9e6d9291 | 484 | int remaining_disks = array.nr_disks; |
b80da661 NB |
485 | if (dv->disposition != 'r' && dv->disposition != 'f') { |
486 | fprintf(stderr, Name ": %s only meaningful " | |
487 | "with -r of -f, not -%c\n", | |
488 | dv->devname, dv->disposition); | |
489 | return 1; | |
490 | } | |
9e6d9291 | 491 | for (; j < 1024 && remaining_disks > 0; j++) { |
b80da661 | 492 | int sfd; |
f21e18ca | 493 | unsigned dev; |
b80da661 NB |
494 | disc.number = j; |
495 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
496 | continue; | |
497 | if (disc.major == 0 && disc.minor == 0) | |
498 | continue; | |
9e6d9291 | 499 | remaining_disks --; |
b80da661 NB |
500 | sprintf(dvname,"%d:%d", disc.major, disc.minor); |
501 | sfd = dev_open(dvname, O_RDONLY); | |
502 | if (sfd >= 0) { | |
503 | close(sfd); | |
504 | continue; | |
505 | } | |
506 | if (dv->disposition == 'f' && | |
507 | (disc.state & 1) == 1) /* already faulty */ | |
508 | continue; | |
509 | if (errno != ENXIO) | |
510 | continue; | |
b3b4e8a7 N |
511 | dev = makedev(disc.major, disc.minor); |
512 | if (stb.st_rdev == dev) | |
513 | /* already did that one */ | |
514 | continue; | |
515 | stb.st_rdev = dev; | |
b80da661 | 516 | next = dv; |
b3b4e8a7 N |
517 | /* same slot again next time - things might |
518 | * have reshuffled */ | |
519 | jnext = j; | |
b80da661 NB |
520 | dnprintable = dvname; |
521 | break; | |
522 | } | |
5b660791 | 523 | if (next != dv) |
b80da661 | 524 | continue; |
a4e13010 N |
525 | } else if (strcmp(dv->devname, "missing") == 0) { |
526 | if (dv->disposition != 'a' || dv->re_add == 0) { | |
527 | fprintf(stderr, Name ": 'missing' only meaningful " | |
528 | "with --re-add\n"); | |
529 | return 1; | |
530 | } | |
531 | if (add_devlist == NULL) | |
532 | add_devlist = conf_get_devs(); | |
533 | if (add_devlist == NULL) { | |
534 | fprintf(stderr, Name ": no devices to scan for missing members."); | |
535 | continue; | |
536 | } | |
537 | add_dev = add_devlist->devname; | |
538 | add_devlist = add_devlist->next; | |
539 | if (add_devlist != NULL) | |
540 | next = dv; | |
541 | if (stat(add_dev, &stb) < 0) | |
542 | continue; | |
98d27e39 | 543 | } else if (strchr(dv->devname, '/') == NULL && |
93601c43 | 544 | strchr(dv->devname, ':') == NULL && |
98d27e39 N |
545 | strlen(dv->devname) < 50) { |
546 | /* Assume this is a kernel-internal name like 'sda1' */ | |
547 | int found = 0; | |
548 | char dname[55]; | |
549 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
550 | fprintf(stderr, Name ": %s only meaningful " | |
cfad27a9 | 551 | "with -r or -f, not -%c\n", |
98d27e39 N |
552 | dv->devname, dv->disposition); |
553 | return 1; | |
554 | } | |
555 | ||
556 | sprintf(dname, "dev-%s", dv->devname); | |
557 | sysfd = sysfs_open(fd2devnum(fd), dname, "block/dev"); | |
558 | if (sysfd >= 0) { | |
559 | char dn[20]; | |
560 | int mj,mn; | |
561 | if (sysfs_fd_get_str(sysfd, dn, 20) > 0 && | |
562 | sscanf(dn, "%d:%d", &mj,&mn) == 2) { | |
563 | stb.st_rdev = makedev(mj,mn); | |
564 | found = 1; | |
565 | } | |
566 | close(sysfd); | |
567 | sysfd = -1; | |
568 | } | |
569 | if (!found) { | |
570 | sysfd = sysfs_open(fd2devnum(fd), dname, "state"); | |
571 | if (sysfd < 0) { | |
572 | fprintf(stderr, Name ": %s does not appear " | |
573 | "to be a component of %s\n", | |
574 | dv->devname, devname); | |
575 | return 1; | |
576 | } | |
577 | } | |
b80da661 NB |
578 | } else { |
579 | j = 0; | |
580 | ||
c7b47447 | 581 | tfd = dev_open(dv->devname, O_RDONLY); |
5a9de8db N |
582 | if (tfd < 0 && dv->disposition == 'r' && |
583 | lstat(dv->devname, &stb) == 0) | |
584 | /* Be happy, the lstat worked, that is | |
585 | * enough for --remove | |
586 | */ | |
587 | ; | |
588 | else { | |
589 | if (tfd < 0 || fstat(tfd, &stb) != 0) { | |
590 | fprintf(stderr, Name ": cannot find %s: %s\n", | |
591 | dv->devname, strerror(errno)); | |
592 | if (tfd >= 0) | |
593 | close(tfd); | |
594 | return 1; | |
595 | } | |
596 | close(tfd); | |
cfad27a9 | 597 | tfd = -1; |
b80da661 NB |
598 | } |
599 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
600 | fprintf(stderr, Name ": %s is not a " | |
601 | "block device.\n", | |
602 | dv->devname); | |
603 | return 1; | |
604 | } | |
682c7051 | 605 | } |
cd29a5c8 | 606 | switch(dv->disposition){ |
682c7051 | 607 | default: |
c913b90e NB |
608 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
609 | dv->devname, dv->disposition); | |
682c7051 NB |
610 | return 1; |
611 | case 'a': | |
4a39c6f2 | 612 | /* add the device */ |
4725bc31 | 613 | if (subarray) { |
f7dd881f DW |
614 | fprintf(stderr, Name ": Cannot add disks to a" |
615 | " \'member\' array, perform this" | |
616 | " operation on the parent container\n"); | |
617 | return 1; | |
f94d52f4 | 618 | } |
f277ce36 | 619 | /* Make sure it isn't in use (in 2.6 or later) */ |
a4e13010 N |
620 | tfd = dev_open(add_dev, O_RDONLY|O_EXCL|O_DIRECT); |
621 | if (tfd < 0 && add_dev != dv->devname) | |
622 | continue; | |
0fbf459d | 623 | if (tfd < 0) { |
d7eaf49f NB |
624 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
625 | dv->devname, strerror(errno)); | |
626 | return 1; | |
627 | } | |
3da92f27 | 628 | |
1686dc25 | 629 | st = dup_super(tst); |
3da92f27 | 630 | |
fe80f49b | 631 | if (array.not_persistent==0) |
3da92f27 NB |
632 | st->ss->load_super(st, tfd, NULL); |
633 | ||
a4e13010 N |
634 | if (add_dev == dv->devname) { |
635 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { | |
093d9187 | 636 | st->ss->free_super(st); |
a4e13010 N |
637 | close(tfd); |
638 | return 1; | |
639 | } | |
640 | } else if (!get_dev_size(tfd, NULL, &ldsize)) { | |
093d9187 | 641 | st->ss->free_super(st); |
4a39c6f2 | 642 | close(tfd); |
cfad27a9 | 643 | tfd = -1; |
a4e13010 | 644 | continue; |
4a39c6f2 | 645 | } |
f94d52f4 | 646 | |
11b391ec N |
647 | if (tst->ss->validate_geometry( |
648 | tst, array.level, array.layout, | |
649 | array.raid_disks, NULL, | |
650 | ldsize >> 9, NULL, NULL, 0) == 0) { | |
651 | if (!force) { | |
652 | fprintf(stderr, Name | |
653 | ": %s is larger than %s can " | |
654 | "effectively use.\n" | |
655 | " Add --force is you " | |
656 | "really wan to add this device.\n", | |
657 | add_dev, devname); | |
093d9187 | 658 | st->ss->free_super(st); |
11b391ec N |
659 | close(tfd); |
660 | return 1; | |
661 | } | |
662 | fprintf(stderr, Name | |
663 | ": %s is larger than %s can " | |
664 | "effectively use.\n" | |
665 | " Adding anyway as --force " | |
666 | "was given.\n", | |
667 | add_dev, devname); | |
668 | } | |
f94d52f4 NB |
669 | if (!tst->ss->external && |
670 | array.major_version == 0 && | |
60d9a174 | 671 | md_get_version(fd)%100 < 2) { |
a4e13010 | 672 | close(tfd); |
093d9187 | 673 | st->ss->free_super(st); |
cfad27a9 | 674 | tfd = -1; |
892debc8 NB |
675 | if (ioctl(fd, HOT_ADD_DISK, |
676 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
677 | if (verbose >= 0) |
678 | fprintf(stderr, Name ": hot added %s\n", | |
a4e13010 | 679 | add_dev); |
892debc8 NB |
680 | continue; |
681 | } | |
682 | ||
cd29a5c8 | 683 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
a4e13010 | 684 | add_dev, strerror(errno)); |
cd29a5c8 NB |
685 | return 1; |
686 | } | |
892debc8 | 687 | |
43dad3d6 | 688 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 689 | |
fe80f49b | 690 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
691 | * a spare slot to use. |
692 | * For 'external' array (well, container based), | |
693 | * We can just load the metadata for the array. | |
fe80f49b | 694 | */ |
a4e13010 N |
695 | if (tst->sb) |
696 | /* already loaded */; | |
697 | else if (tst->ss->external) { | |
0fb69d1d | 698 | tst->ss->load_container(tst, fd, NULL); |
43dad3d6 | 699 | } else for (j = 0; j < tst->max_devs; j++) { |
fe80f49b NB |
700 | char *dev; |
701 | int dfd; | |
702 | disc.number = j; | |
703 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
704 | continue; | |
705 | if (disc.major==0 && disc.minor==0) | |
706 | continue; | |
707 | if ((disc.state & 4)==0) continue; /* sync */ | |
708 | /* Looks like a good device to try */ | |
16c6fa80 | 709 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 710 | if (!dev) continue; |
16c6fa80 | 711 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 712 | if (dfd < 0) continue; |
3da92f27 NB |
713 | if (tst->ss->load_super(tst, dfd, |
714 | NULL)) { | |
fe80f49b NB |
715 | close(dfd); |
716 | continue; | |
717 | } | |
892debc8 | 718 | close(dfd); |
fe80f49b NB |
719 | break; |
720 | } | |
43dad3d6 | 721 | /* FIXME this is a bad test to be using */ |
3da92f27 | 722 | if (!tst->sb) { |
a4e13010 | 723 | close(tfd); |
093d9187 | 724 | st->ss->free_super(st); |
0081eb00 | 725 | fprintf(stderr, Name ": cannot load array metadata from %s\n", devname); |
fe80f49b NB |
726 | return 1; |
727 | } | |
2a528478 N |
728 | |
729 | /* Make sure device is large enough */ | |
730 | if (tst->ss->avail_size(tst, ldsize/512) < | |
731 | array_size) { | |
a4e13010 | 732 | close(tfd); |
cfad27a9 | 733 | tfd = -1; |
093d9187 | 734 | st->ss->free_super(st); |
a4e13010 N |
735 | if (add_dev != dv->devname) |
736 | continue; | |
2a528478 N |
737 | fprintf(stderr, Name ": %s not large enough to join array\n", |
738 | dv->devname); | |
739 | return 1; | |
740 | } | |
741 | ||
fe80f49b NB |
742 | /* Possibly this device was recently part of the array |
743 | * and was temporarily removed, and is now being re-added. | |
744 | * If so, we can simply re-add it. | |
745 | */ | |
3da92f27 | 746 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 | 747 | |
873eec46 | 748 | if (st->sb) { |
8453e704 | 749 | struct mdinfo mdi; |
a5d85af7 | 750 | st->ss->getinfo_super(st, &mdi, NULL); |
3da92f27 | 751 | st->ss->uuid_from_super(st, ouuid); |
8453e704 N |
752 | if ((mdi.disk.state & (1<<MD_DISK_ACTIVE)) && |
753 | !(mdi.disk.state & (1<<MD_DISK_FAULTY)) && | |
754 | memcmp(duuid, ouuid, sizeof(ouuid))==0) { | |
755 | /* look like it is worth a try. Need to | |
756 | * make sure kernel will accept it though. | |
fe80f49b | 757 | */ |
873eec46 N |
758 | /* re-add doesn't work for version-1 superblocks |
759 | * before 2.6.18 :-( | |
760 | */ | |
761 | if (array.major_version == 1 && | |
762 | get_linux_version() <= 2006018) | |
763 | goto skip_re_add; | |
8453e704 N |
764 | disc.number = mdi.disk.number; |
765 | if (ioctl(fd, GET_DISK_INFO, &disc) != 0 | |
766 | || disc.major != 0 || disc.minor != 0 | |
767 | || !enough_fd(fd)) | |
768 | goto skip_re_add; | |
fe80f49b NB |
769 | disc.major = major(stb.st_rdev); |
770 | disc.minor = minor(stb.st_rdev); | |
771 | disc.number = mdi.disk.number; | |
772 | disc.raid_disk = mdi.disk.raid_disk; | |
773 | disc.state = mdi.disk.state; | |
b3d31955 | 774 | if (dv->writemostly == 1) |
4d20d744 | 775 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
776 | if (dv->writemostly == 2) |
777 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
a4e13010 N |
778 | remove_partitions(tfd); |
779 | close(tfd); | |
780 | tfd = -1; | |
16715c01 | 781 | if (update || dv->writemostly > 0) { |
833bb0f8 N |
782 | int rv = -1; |
783 | tfd = dev_open(dv->devname, O_RDWR); | |
16715c01 DL |
784 | if (tfd < 0) { |
785 | fprintf(stderr, Name ": failed to open %s for" | |
786 | " superblock update during re-add\n", dv->devname); | |
093d9187 | 787 | st->ss->free_super(st); |
16715c01 DL |
788 | return 1; |
789 | } | |
833bb0f8 | 790 | |
16715c01 DL |
791 | if (dv->writemostly == 1) |
792 | rv = st->ss->update_super( | |
793 | st, NULL, "writemostly", | |
794 | devname, verbose, 0, NULL); | |
795 | if (dv->writemostly == 2) | |
796 | rv = st->ss->update_super( | |
797 | st, NULL, "readwrite", | |
798 | devname, verbose, 0, NULL); | |
799 | if (update) | |
833bb0f8 N |
800 | rv = st->ss->update_super( |
801 | st, NULL, update, | |
802 | devname, verbose, 0, NULL); | |
803 | if (rv == 0) | |
c0f8269d | 804 | rv = st->ss->store_super(st, tfd); |
833bb0f8 N |
805 | close(tfd); |
806 | tfd = -1; | |
807 | if (rv != 0) { | |
808 | fprintf(stderr, Name ": failed to update" | |
809 | " superblock during re-add\n"); | |
093d9187 | 810 | st->ss->free_super(st); |
833bb0f8 N |
811 | return 1; |
812 | } | |
813 | } | |
5c64fcb5 N |
814 | /* don't even try if disk is marked as faulty */ |
815 | errno = 0; | |
8453e704 | 816 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
fe80f49b | 817 | if (verbose >= 0) |
a4e13010 | 818 | fprintf(stderr, Name ": re-added %s\n", add_dev); |
7d2e6486 | 819 | count++; |
093d9187 | 820 | st->ss->free_super(st); |
308e1801 | 821 | continue; |
fe80f49b | 822 | } |
c9f39c1b N |
823 | if (errno == ENOMEM || errno == EROFS) { |
824 | fprintf(stderr, Name ": add new device failed for %s: %s\n", | |
a4e13010 | 825 | add_dev, strerror(errno)); |
093d9187 | 826 | st->ss->free_super(st); |
a4e13010 N |
827 | if (add_dev != dv->devname) |
828 | continue; | |
c9f39c1b N |
829 | return 1; |
830 | } | |
8453e704 N |
831 | skip_re_add: |
832 | re_add_failed = 1; | |
fe80f49b | 833 | } |
1cc7f4fe | 834 | st->ss->free_super(st); |
892debc8 | 835 | } |
a4e13010 N |
836 | if (add_dev != dv->devname) { |
837 | if (verbose > 0) | |
838 | fprintf(stderr, Name | |
839 | ": --re-add for %s to %s is not possible\n", | |
840 | add_dev, devname); | |
cfad27a9 | 841 | if (tfd >= 0) { |
a4e13010 | 842 | close(tfd); |
cfad27a9 DL |
843 | tfd = -1; |
844 | } | |
a4e13010 N |
845 | continue; |
846 | } | |
751fd6c0 | 847 | if (dv->re_add) { |
a4e13010 N |
848 | if (tfd >= 0) |
849 | close(tfd); | |
751fd6c0 N |
850 | fprintf(stderr, Name |
851 | ": --re-add for %s to %s is not possible\n", | |
852 | dv->devname, devname); | |
853 | return 1; | |
854 | } | |
8453e704 N |
855 | if (re_add_failed) { |
856 | fprintf(stderr, Name ": %s reports being an active member for %s, but a --re-add fails.\n", | |
857 | dv->devname, devname); | |
858 | fprintf(stderr, Name ": not performing --add as that would convert %s in to a spare.\n", | |
859 | dv->devname); | |
860 | fprintf(stderr, Name ": To make this a spare, use \"mdadm --zero-superblock %s\" first.\n", | |
861 | dv->devname); | |
862 | if (tfd >= 0) | |
863 | close(tfd); | |
864 | return 1; | |
865 | } | |
4a39c6f2 NB |
866 | } else { |
867 | /* non-persistent. Must ensure that new drive | |
868 | * is at least array.size big. | |
869 | */ | |
7a3be72f | 870 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
871 | fprintf(stderr, Name ": %s not large enough to join array\n", |
872 | dv->devname); | |
cfad27a9 DL |
873 | if (tfd >= 0) |
874 | close(tfd); | |
4a39c6f2 NB |
875 | return 1; |
876 | } | |
892debc8 | 877 | } |
a4e13010 N |
878 | /* committed to really trying this device now*/ |
879 | if (tfd >= 0) { | |
880 | remove_partitions(tfd); | |
881 | close(tfd); | |
cfad27a9 | 882 | tfd = -1; |
a4e13010 | 883 | } |
7eae7080 NB |
884 | /* in 2.6.17 and earlier, version-1 superblocks won't |
885 | * use the number we write, but will choose a free number. | |
886 | * we must choose the same free number, which requires | |
887 | * starting at 'raid_disks' and counting up | |
888 | */ | |
3da92f27 | 889 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 890 | disc.number = j; |
682c7051 NB |
891 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
892 | break; | |
893 | if (disc.major==0 && disc.minor==0) | |
894 | break; | |
895 | if (disc.state & 8) /* removed */ | |
896 | break; | |
897 | } | |
0df46c2a NB |
898 | disc.major = major(stb.st_rdev); |
899 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
900 | disc.number =j; |
901 | disc.state = 0; | |
02c39ab1 | 902 | if (array.not_persistent==0) { |
111d01fc | 903 | int dfd; |
b3d31955 | 904 | if (dv->writemostly == 1) |
fe80f49b | 905 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
3b435195 | 906 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
f20c3968 DW |
907 | if (tst->ss->add_to_super(tst, &disc, dfd, |
908 | dv->devname)) { | |
f20c3968 DW |
909 | close(dfd); |
910 | return 1; | |
911 | } | |
1cc7f4fe N |
912 | if (tst->ss->write_init_super(tst)) { |
913 | close(dfd); | |
fe80f49b | 914 | return 1; |
1cc7f4fe | 915 | } |
fe80f49b NB |
916 | } else if (dv->re_add) { |
917 | /* this had better be raid1. | |
918 | * As we are "--re-add"ing we must find a spare slot | |
919 | * to fill. | |
920 | */ | |
921 | char *used = malloc(array.raid_disks); | |
922 | memset(used, 0, array.raid_disks); | |
3da92f27 | 923 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
924 | mdu_disk_info_t disc2; |
925 | disc2.number = j; | |
926 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
927 | continue; | |
928 | if (disc2.major==0 && disc2.minor==0) | |
929 | continue; | |
930 | if (disc2.state & 8) /* removed */ | |
931 | continue; | |
932 | if (disc2.raid_disk < 0) | |
933 | continue; | |
934 | if (disc2.raid_disk > array.raid_disks) | |
935 | continue; | |
936 | used[disc2.raid_disk] = 1; | |
937 | } | |
938 | for (j=0 ; j<array.raid_disks; j++) | |
939 | if (!used[j]) { | |
940 | disc.raid_disk = j; | |
941 | disc.state |= (1<<MD_DISK_SYNC); | |
942 | break; | |
943 | } | |
0eb26465 | 944 | free(used); |
fe80f49b | 945 | } |
b3d31955 | 946 | if (dv->writemostly == 1) |
d8def61c | 947 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 | 948 | if (tst->ss->external) { |
73cb8d43 AK |
949 | /* add a disk |
950 | * to an external metadata container */ | |
43dad3d6 DW |
951 | struct mdinfo new_mdi; |
952 | struct mdinfo *sra; | |
953 | int container_fd; | |
954 | int devnum = fd2devnum(fd); | |
02c39ab1 | 955 | int dfd; |
43dad3d6 DW |
956 | |
957 | container_fd = open_dev_excl(devnum); | |
958 | if (container_fd < 0) { | |
959 | fprintf(stderr, Name ": add failed for %s:" | |
960 | " could not get exclusive access to container\n", | |
961 | dv->devname); | |
562e70e4 | 962 | tst->ss->free_super(tst); |
43dad3d6 DW |
963 | return 1; |
964 | } | |
965 | ||
02c39ab1 | 966 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
d6221e66 N |
967 | if (mdmon_running(tst->container_dev)) |
968 | tst->update_tail = &tst->updates; | |
02c39ab1 N |
969 | if (tst->ss->add_to_super(tst, &disc, dfd, |
970 | dv->devname)) { | |
971 | close(dfd); | |
972 | close(container_fd); | |
973 | return 1; | |
974 | } | |
c0f8269d AK |
975 | if (tst->update_tail) |
976 | flush_metadata_updates(tst); | |
d6221e66 | 977 | else |
c0f8269d | 978 | tst->ss->sync_metadata(tst); |
02c39ab1 | 979 | |
43dad3d6 DW |
980 | sra = sysfs_read(container_fd, -1, 0); |
981 | if (!sra) { | |
982 | fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", | |
983 | dv->devname); | |
984 | close(container_fd); | |
562e70e4 | 985 | tst->ss->free_super(tst); |
43dad3d6 DW |
986 | return 1; |
987 | } | |
988 | sra->array.level = LEVEL_CONTAINER; | |
989 | /* Need to set data_offset and component_size */ | |
a5d85af7 | 990 | tst->ss->getinfo_super(tst, &new_mdi, NULL); |
43dad3d6 DW |
991 | new_mdi.disk.major = disc.major; |
992 | new_mdi.disk.minor = disc.minor; | |
d23534e4 | 993 | new_mdi.recovery_start = 0; |
1cc7f4fe N |
994 | /* Make sure fds are closed as they are O_EXCL which |
995 | * would block add_disk */ | |
996 | tst->ss->free_super(tst); | |
462906cd | 997 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { |
43dad3d6 DW |
998 | fprintf(stderr, Name ": add new device to external metadata" |
999 | " failed for %s\n", dv->devname); | |
1000 | close(container_fd); | |
73cb8d43 | 1001 | sysfs_free(sra); |
43dad3d6 DW |
1002 | return 1; |
1003 | } | |
983fff45 | 1004 | ping_monitor_by_id(devnum); |
43dad3d6 DW |
1005 | sysfs_free(sra); |
1006 | close(container_fd); | |
562e70e4 N |
1007 | } else { |
1008 | tst->ss->free_super(tst); | |
1009 | if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
1010 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", | |
1011 | dv->devname, j, strerror(errno)); | |
1012 | return 1; | |
1013 | } | |
682c7051 | 1014 | } |
dab6685f NB |
1015 | if (verbose >= 0) |
1016 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
1017 | break; |
1018 | ||
1019 | case 'r': | |
1020 | /* hot remove */ | |
4725bc31 | 1021 | if (subarray) { |
f7dd881f DW |
1022 | fprintf(stderr, Name ": Cannot remove disks from a" |
1023 | " \'member\' array, perform this" | |
1024 | " operation on the parent container\n"); | |
98d27e39 N |
1025 | if (sysfd >= 0) |
1026 | close(sysfd); | |
f7dd881f | 1027 | return 1; |
f94d52f4 NB |
1028 | } |
1029 | if (tst->ss->external) { | |
1030 | /* To remove a device from a container, we must | |
1031 | * check that it isn't in use in an array. | |
1032 | * This involves looking in the 'holders' | |
1033 | * directory - there must be just one entry, | |
1034 | * the container. | |
1035 | * To ensure that it doesn't get used as a | |
1036 | * hold spare while we are checking, we | |
1037 | * get an O_EXCL open on the container | |
1038 | */ | |
1039 | int dnum = fd2devnum(fd); | |
1040 | lfd = open_dev_excl(dnum); | |
1041 | if (lfd < 0) { | |
1042 | fprintf(stderr, Name | |
1043 | ": Cannot get exclusive access " | |
1044 | " to container - odd\n"); | |
98d27e39 N |
1045 | if (sysfd >= 0) |
1046 | close(sysfd); | |
f94d52f4 NB |
1047 | return 1; |
1048 | } | |
85f9b5f7 DW |
1049 | /* in the detached case it is not possible to |
1050 | * check if we are the unique holder, so just | |
1051 | * rely on the 'detached' checks | |
1052 | */ | |
1053 | if (strcmp(dv->devname, "detached") == 0 || | |
98d27e39 | 1054 | sysfd >= 0 || |
85f9b5f7 DW |
1055 | sysfs_unique_holder(dnum, stb.st_rdev)) |
1056 | /* pass */; | |
1057 | else { | |
f94d52f4 NB |
1058 | fprintf(stderr, Name |
1059 | ": %s is %s, cannot remove.\n", | |
1060 | dnprintable, | |
1061 | errno == EEXIST ? "still in use": | |
1062 | "not a member"); | |
1063 | close(lfd); | |
1064 | return 1; | |
1065 | } | |
1066 | } | |
82b27616 | 1067 | /* FIXME check that it is a current member */ |
98d27e39 N |
1068 | if (sysfd >= 0) { |
1069 | /* device has been removed and we don't know | |
1070 | * the major:minor number | |
1071 | */ | |
1072 | int n = write(sysfd, "remove", 6); | |
1073 | if (n != 6) | |
f94d52f4 | 1074 | err = -1; |
98d27e39 N |
1075 | else |
1076 | err = 0; | |
1077 | close(sysfd); | |
1078 | sysfd = -1; | |
1079 | } else { | |
1080 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); | |
1081 | if (err && errno == ENODEV) { | |
1082 | /* Old kernels rejected this if no personality | |
1083 | * registered */ | |
1084 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
1085 | struct mdinfo *dv = NULL; | |
1086 | if (sra) | |
1087 | dv = sra->devs; | |
1088 | for ( ; dv ; dv=dv->next) | |
f21e18ca N |
1089 | if (dv->disk.major == (int)major(stb.st_rdev) && |
1090 | dv->disk.minor == (int)minor(stb.st_rdev)) | |
98d27e39 N |
1091 | break; |
1092 | if (dv) | |
1093 | err = sysfs_set_str(sra, dv, | |
1094 | "state", "remove"); | |
1095 | else | |
1096 | err = -1; | |
1097 | if (sra) | |
1098 | sysfs_free(sra); | |
1099 | } | |
f94d52f4 NB |
1100 | } |
1101 | if (err) { | |
b80da661 NB |
1102 | fprintf(stderr, Name ": hot remove failed " |
1103 | "for %s: %s\n", dnprintable, | |
1104 | strerror(errno)); | |
f94d52f4 NB |
1105 | if (lfd >= 0) |
1106 | close(lfd); | |
682c7051 NB |
1107 | return 1; |
1108 | } | |
313a4a82 DW |
1109 | if (tst->ss->external) { |
1110 | /* | |
1111 | * Before dropping our exclusive open we make an | |
1112 | * attempt at preventing mdmon from seeing an | |
1113 | * 'add' event before reconciling this 'remove' | |
1114 | * event. | |
1115 | */ | |
1116 | char *name = devnum2devname(fd2devnum(fd)); | |
1117 | ||
1118 | if (!name) { | |
1119 | fprintf(stderr, Name ": unable to get container name\n"); | |
1120 | return 1; | |
1121 | } | |
1122 | ||
1123 | ping_manager(name); | |
1124 | free(name); | |
1125 | } | |
98d27e39 N |
1126 | if (lfd >= 0) |
1127 | close(lfd); | |
7d2e6486 | 1128 | count++; |
dab6685f | 1129 | if (verbose >= 0) |
29ba4804 N |
1130 | fprintf(stderr, Name ": hot removed %s from %s\n", |
1131 | dnprintable, devname); | |
682c7051 NB |
1132 | break; |
1133 | ||
1134 | case 'f': /* set faulty */ | |
1135 | /* FIXME check current member */ | |
98d27e39 N |
1136 | if ((sysfd >= 0 && write(sysfd, "faulty", 6) != 6) || |
1137 | (sysfd < 0 && ioctl(fd, SET_DISK_FAULTY, | |
1138 | (unsigned long) stb.st_rdev))) { | |
b83d95f3 | 1139 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 1140 | dnprintable, strerror(errno)); |
98d27e39 N |
1141 | if (sysfd >= 0) |
1142 | close(sysfd); | |
682c7051 NB |
1143 | return 1; |
1144 | } | |
98d27e39 N |
1145 | if (sysfd >= 0) |
1146 | close(sysfd); | |
1147 | sysfd = -1; | |
7d2e6486 | 1148 | count++; |
dab6685f NB |
1149 | if (verbose >= 0) |
1150 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 1151 | dnprintable, devname); |
682c7051 NB |
1152 | break; |
1153 | } | |
1154 | } | |
7d2e6486 N |
1155 | if (test && count == 0) |
1156 | return 2; | |
682c7051 | 1157 | return 0; |
64c4757e | 1158 | } |
1f48664b NB |
1159 | |
1160 | int autodetect(void) | |
1161 | { | |
1162 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
1163 | int rv = 1; | |
1164 | int fd = dev_open("9:0", O_RDONLY); | |
1165 | if (fd >= 0) { | |
1166 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
1167 | rv = 0; | |
1168 | close(fd); | |
1169 | } | |
1170 | return rv; | |
1171 | } | |
aa534678 | 1172 | |
fa56eddb | 1173 | int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident *ident, int quiet) |
aa534678 DW |
1174 | { |
1175 | struct supertype supertype, *st = &supertype; | |
1176 | int fd, rv = 2; | |
1177 | ||
1178 | memset(st, 0, sizeof(*st)); | |
aa534678 | 1179 | |
feab51f8 | 1180 | fd = open_subarray(dev, subarray, st, quiet); |
aa534678 DW |
1181 | if (fd < 0) |
1182 | return 2; | |
1183 | ||
1184 | if (!st->ss->update_subarray) { | |
1185 | if (!quiet) | |
1186 | fprintf(stderr, | |
1187 | Name ": Operation not supported for %s metadata\n", | |
1188 | st->ss->name); | |
1189 | goto free_super; | |
1190 | } | |
1191 | ||
1192 | if (mdmon_running(st->devnum)) | |
1193 | st->update_tail = &st->updates; | |
1194 | ||
a951a4f7 | 1195 | rv = st->ss->update_subarray(st, subarray, update, ident); |
aa534678 DW |
1196 | |
1197 | if (rv) { | |
1198 | if (!quiet) | |
1199 | fprintf(stderr, Name ": Failed to update %s of subarray-%s in %s\n", | |
1200 | update, subarray, dev); | |
1201 | } else if (st->update_tail) | |
1202 | flush_metadata_updates(st); | |
1203 | else | |
1204 | st->ss->sync_metadata(st); | |
1205 | ||
1206 | if (rv == 0 && strcmp(update, "name") == 0 && !quiet) | |
1207 | fprintf(stderr, | |
1208 | Name ": Updated subarray-%s name from %s, UUIDs may have changed\n", | |
1209 | subarray, dev); | |
1210 | ||
1211 | free_super: | |
1212 | st->ss->free_super(st); | |
1213 | close(fd); | |
1214 | ||
1215 | return rv; | |
1216 | } | |
d52bb542 AC |
1217 | |
1218 | /* Move spare from one array to another | |
1219 | * If adding to destination array fails | |
1220 | * add back to original array | |
1221 | * Returns 1 on success, 0 on failure */ | |
1222 | int move_spare(char *from_devname, char *to_devname, dev_t devid) | |
1223 | { | |
1224 | struct mddev_dev devlist; | |
1225 | char devname[20]; | |
1226 | ||
1227 | /* try to remove and add */ | |
1228 | int fd1 = open(to_devname, O_RDONLY); | |
1229 | int fd2 = open(from_devname, O_RDONLY); | |
1230 | ||
1231 | if (fd1 < 0 || fd2 < 0) { | |
1232 | if (fd1>=0) close(fd1); | |
1233 | if (fd2>=0) close(fd2); | |
1234 | return 0; | |
1235 | } | |
1236 | ||
1237 | devlist.next = NULL; | |
1238 | devlist.used = 0; | |
1239 | devlist.re_add = 0; | |
1240 | devlist.writemostly = 0; | |
1241 | devlist.devname = devname; | |
1242 | sprintf(devname, "%d:%d", major(devid), minor(devid)); | |
1243 | ||
1244 | devlist.disposition = 'r'; | |
11b391ec | 1245 | if (Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 | 1246 | devlist.disposition = 'a'; |
11b391ec | 1247 | if (Manage_subdevs(to_devname, fd1, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 AC |
1248 | /* make sure manager is aware of changes */ |
1249 | ping_manager(to_devname); | |
1250 | ping_manager(from_devname); | |
1251 | close(fd1); | |
1252 | close(fd2); | |
1253 | return 1; | |
1254 | } | |
11b391ec | 1255 | else Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0); |
d52bb542 AC |
1256 | } |
1257 | close(fd1); | |
1258 | close(fd2); | |
1259 | return 0; | |
1260 | } | |
435d4ebb | 1261 | #endif |