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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 | 49 | if (md_get_version(fd) < 9000) { |
e7b84f9d | 50 | pr_err("need md driver version 0.90.0 or later\n"); |
682c7051 NB |
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) { | |
e7b84f9d | 74 | pr_err("failed to set readonly for %s: %s\n", |
e9dd1598 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, '/'); | |
1471b8b1 | 89 | if (cp) |
e9dd1598 N |
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 | 98 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
e7b84f9d | 99 | pr_err("%s does not appear to be active.\n", |
682c7051 | 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)) { | |
e7b84f9d | 107 | pr_err("failed to set readonly for %s: %s\n", |
682c7051 | 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)) { | |
e7b84f9d | 114 | pr_err("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 | 154 | |
503975b9 | 155 | path2 = xmalloc(strlen(path)+20); |
b1702f48 N |
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 | ||
ba728be7 N |
177 | int Manage_runstop(char *devname, int fd, int runstop, |
178 | int verbose, int will_retry) | |
64c4757e | 179 | { |
682c7051 | 180 | /* Run or stop the array. array must already be configured |
ba728be7 N |
181 | * 'Run' requires >= 0.90.0 |
182 | * 'will_retry' is only relevant for 'stop', and means | |
183 | * that error messages are not wanted. | |
682c7051 | 184 | */ |
682c7051 | 185 | mdu_param_t param; /* unused */ |
bccd8153 | 186 | int rv = 0; |
82b27616 | 187 | |
ba728be7 N |
188 | if (will_retry && verbose == 0) |
189 | verbose = -1; | |
190 | ||
82b27616 NB |
191 | if (runstop == -1 && md_get_version(fd) < 9000) { |
192 | if (ioctl(fd, STOP_MD, 0)) { | |
e7b84f9d N |
193 | pr_err("stopping device %s " |
194 | "failed: %s\n", | |
195 | devname, strerror(errno)); | |
82b27616 NB |
196 | return 1; |
197 | } | |
198 | } | |
aba69144 | 199 | |
682c7051 | 200 | if (md_get_version(fd) < 9000) { |
e7b84f9d | 201 | pr_err("need md driver version 0.90.0 or later\n"); |
682c7051 NB |
202 | return 1; |
203 | } | |
ba728be7 | 204 | |
682c7051 NB |
205 | if (runstop>0) { |
206 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
ba728be7 N |
207 | if (verbose >= 0) |
208 | pr_err("failed to run array %s: %s\n", | |
209 | devname, strerror(errno)); | |
682c7051 NB |
210 | return 1; |
211 | } | |
ba728be7 | 212 | if (verbose >= 0) |
e7b84f9d | 213 | pr_err("started %s\n", devname); |
682c7051 | 214 | } else if (runstop < 0){ |
8382f19b NB |
215 | struct map_ent *map = NULL; |
216 | struct stat stb; | |
daf7a3ce | 217 | struct mdinfo *mdi; |
4ccad7b1 | 218 | int devnum; |
eb0af526 N |
219 | int err; |
220 | int count; | |
daf7a3ce NB |
221 | /* If this is an mdmon managed array, just write 'inactive' |
222 | * to the array state and let mdmon clear up. | |
223 | */ | |
4ccad7b1 | 224 | devnum = fd2devnum(fd); |
eb0af526 N |
225 | /* Get EXCL access first. If this fails, then attempting |
226 | * to stop is probably a bad idea. | |
227 | */ | |
228 | close(fd); | |
229 | fd = open(devname, O_RDONLY|O_EXCL); | |
230 | if (fd < 0 || fd2devnum(fd) != devnum) { | |
231 | if (fd >= 0) | |
232 | close(fd); | |
ba728be7 N |
233 | if (verbose >= 0) |
234 | pr_err("Cannot get exclusive access to %s:" | |
235 | "Perhaps a running " | |
236 | "process, mounted filesystem " | |
237 | "or active volume group?\n", | |
238 | devname); | |
eb0af526 N |
239 | return 1; |
240 | } | |
daf7a3ce NB |
241 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); |
242 | if (mdi && | |
243 | mdi->array.level > 0 && | |
3c558363 | 244 | is_subarray(mdi->text_version)) { |
1ae42d9d | 245 | int err; |
daf7a3ce NB |
246 | /* This is mdmon managed. */ |
247 | close(fd); | |
1ae42d9d KW |
248 | |
249 | count = 25; | |
250 | while (count && | |
251 | (err = sysfs_set_str(mdi, NULL, | |
252 | "array_state", | |
253 | "inactive")) < 0 | |
254 | && errno == EBUSY) { | |
255 | usleep(200000); | |
256 | count--; | |
257 | } | |
ba728be7 N |
258 | if (err) { |
259 | if (verbose >= 0) | |
260 | pr_err("failed to stop array %s: %s\n", | |
261 | devname, strerror(errno)); | |
bccd8153 JS |
262 | rv = 1; |
263 | goto out; | |
daf7a3ce NB |
264 | } |
265 | ||
266 | /* Give monitor a chance to act */ | |
c94709e8 | 267 | ping_monitor(mdi->text_version); |
daf7a3ce | 268 | |
eb0af526 N |
269 | fd = open_dev_excl(devnum); |
270 | if (fd < 0) { | |
ba728be7 N |
271 | if (verbose >= 0) |
272 | pr_err("failed to completely stop %s" | |
273 | ": Device is busy\n", | |
274 | devname); | |
bccd8153 JS |
275 | rv = 1; |
276 | goto out; | |
eb0af526 | 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) { | |
ba728be7 | 298 | if (verbose >= 0) |
e7b84f9d N |
299 | pr_err("Cannot stop container %s: " |
300 | "member %s still active\n", | |
301 | devname, m->dev); | |
430ea469 | 302 | free_mdstat(mds); |
bccd8153 JS |
303 | rv = 1; |
304 | goto out; | |
430ea469 | 305 | } |
daf7a3ce | 306 | } |
daf7a3ce | 307 | |
eb0af526 N |
308 | /* As we have an O_EXCL open, any use of the device |
309 | * which blocks STOP_ARRAY is probably a transient use, | |
310 | * so it is reasonable to retry for a while - 5 seconds. | |
311 | */ | |
fb0d4b9c | 312 | count = 25; err = 0; |
eb0af526 N |
313 | while (count && fd >= 0 |
314 | && (err = ioctl(fd, STOP_ARRAY, NULL)) < 0 | |
315 | && errno == EBUSY) { | |
316 | usleep(200000); | |
317 | count --; | |
318 | } | |
319 | if (fd >= 0 && err) { | |
ba728be7 | 320 | if (verbose >= 0) { |
e7b84f9d N |
321 | pr_err("failed to stop array %s: %s\n", |
322 | devname, strerror(errno)); | |
d927f3c4 NB |
323 | if (errno == EBUSY) |
324 | fprintf(stderr, "Perhaps a running " | |
325 | "process, mounted filesystem " | |
326 | "or active volume group?\n"); | |
327 | } | |
bccd8153 JS |
328 | rv = 1; |
329 | goto out; | |
682c7051 | 330 | } |
97590376 | 331 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array |
d49410d3 N |
332 | * was stopped, so We'll do it here just to be sure. Drop any |
333 | * partitions as well... | |
97590376 | 334 | */ |
d49410d3 N |
335 | if (fd >= 0) |
336 | ioctl(fd, BLKRRPART, 0); | |
97590376 N |
337 | if (mdi) |
338 | sysfs_uevent(mdi, "change"); | |
daf7a3ce | 339 | |
4ccad7b1 N |
340 | |
341 | if (devnum != NoMdDev && | |
342 | (stat("/dev/.udev", &stb) != 0 || | |
343 | check_env("MDADM_NO_UDEV"))) { | |
344 | struct map_ent *mp = map_by_devnum(&map, devnum); | |
345 | remove_devices(devnum, mp ? mp->path : NULL); | |
346 | } | |
347 | ||
348 | ||
ba728be7 | 349 | if (verbose >= 0) |
e7b84f9d | 350 | pr_err("stopped %s\n", devname); |
4eb26970 DW |
351 | map_lock(&map); |
352 | map_remove(&map, devnum); | |
353 | map_unlock(&map); | |
bccd8153 JS |
354 | out: |
355 | if (mdi) | |
356 | sysfs_free(mdi); | |
682c7051 | 357 | } |
bccd8153 | 358 | return rv; |
64c4757e NB |
359 | } |
360 | ||
dd0781e5 NB |
361 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
362 | { | |
363 | mdu_array_info_t info; | |
364 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
e7b84f9d | 365 | pr_err("Cannot get array information for %s: %s\n", |
dd0781e5 NB |
366 | devname, strerror(errno)); |
367 | return 1; | |
368 | } | |
369 | if (size >= 0) | |
370 | info.size = size; | |
371 | if (raid_disks > 0) | |
372 | info.raid_disks = raid_disks; | |
373 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
e7b84f9d | 374 | pr_err("Cannot set device size/shape for %s: %s\n", |
dd0781e5 NB |
375 | devname, strerror(errno)); |
376 | return 1; | |
377 | } | |
378 | return 0; | |
b5e64645 | 379 | } |
dd0781e5 | 380 | |
64c4757e | 381 | int Manage_subdevs(char *devname, int fd, |
833bb0f8 | 382 | struct mddev_dev *devlist, int verbose, int test, |
11b391ec | 383 | char *update, int force) |
cd29a5c8 | 384 | { |
682c7051 NB |
385 | /* do something to each dev. |
386 | * devmode can be | |
387 | * 'a' - add the device | |
388 | * try HOT_ADD_DISK | |
389 | * If that fails EINVAL, try ADD_NEW_DISK | |
390 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
391 | * device can be 'faulty' or 'detached' in which case all |
392 | * matching devices are removed. | |
682c7051 | 393 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
394 | * device can be 'detached' in which case any device that |
395 | * is inaccessible will be marked faulty. | |
98d27e39 N |
396 | * For 'f' and 'r', the device can also be a kernel-internal |
397 | * name such as 'sdb'. | |
682c7051 | 398 | */ |
a655e550 | 399 | struct mddev_dev *add_devlist = NULL; |
682c7051 NB |
400 | mdu_array_info_t array; |
401 | mdu_disk_info_t disc; | |
7a3be72f | 402 | unsigned long long array_size; |
a655e550 | 403 | struct mddev_dev *dv, *next = NULL; |
682c7051 | 404 | struct stat stb; |
b80da661 | 405 | int j, jnext = 0; |
cfad27a9 | 406 | int tfd = -1; |
3da92f27 | 407 | struct supertype *st, *tst; |
4725bc31 | 408 | char *subarray = NULL; |
fe80f49b NB |
409 | int duuid[4]; |
410 | int ouuid[4]; | |
f94d52f4 | 411 | int lfd = -1; |
98d27e39 | 412 | int sysfd = -1; |
7d2e6486 | 413 | int count = 0; /* number of actions taken */ |
9f584691 N |
414 | struct mdinfo info; |
415 | int frozen = 0; | |
682c7051 NB |
416 | |
417 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
e7b84f9d | 418 | pr_err("cannot get array info for %s\n", |
682c7051 | 419 | devname); |
bcbb3112 | 420 | goto abort; |
682c7051 | 421 | } |
9f584691 | 422 | sysfs_init(&info, fd, 0); |
3da92f27 | 423 | |
7a3be72f NB |
424 | /* array.size is only 32 bit and may be truncated. |
425 | * So read from sysfs if possible, and record number of sectors | |
426 | */ | |
427 | ||
428 | array_size = get_component_size(fd); | |
429 | if (array_size <= 0) | |
430 | array_size = array.size * 2; | |
431 | ||
4725bc31 | 432 | tst = super_by_fd(fd, &subarray); |
3da92f27 | 433 | if (!tst) { |
e7b84f9d | 434 | pr_err("unsupport array - version %d.%d\n", |
3da92f27 | 435 | array.major_version, array.minor_version); |
bcbb3112 | 436 | goto abort; |
3da92f27 NB |
437 | } |
438 | ||
b3b4e8a7 | 439 | stb.st_rdev = 0; |
b80da661 | 440 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 441 | unsigned long long ldsize; |
b80da661 NB |
442 | char dvname[20]; |
443 | char *dnprintable = dv->devname; | |
a4e13010 | 444 | char *add_dev = dv->devname; |
f94d52f4 | 445 | int err; |
0a999759 | 446 | int array_failed; |
4a39c6f2 | 447 | |
b80da661 NB |
448 | next = dv->next; |
449 | jnext = 0; | |
450 | ||
451 | if (strcmp(dv->devname, "failed")==0 || | |
452 | strcmp(dv->devname, "faulty")==0) { | |
9e6d9291 | 453 | int remaining_disks = array.nr_disks; |
b80da661 | 454 | if (dv->disposition != 'r') { |
e7b84f9d | 455 | pr_err("%s only meaningful " |
b80da661 NB |
456 | "with -r, not -%c\n", |
457 | dv->devname, dv->disposition); | |
bcbb3112 | 458 | goto abort; |
b80da661 | 459 | } |
480f3566 | 460 | for (; j < MAX_DISKS && remaining_disks > 0; j++) { |
f21e18ca | 461 | unsigned dev; |
b80da661 NB |
462 | disc.number = j; |
463 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
464 | continue; | |
465 | if (disc.major == 0 && disc.minor == 0) | |
466 | continue; | |
9e6d9291 | 467 | remaining_disks --; |
b80da661 NB |
468 | if ((disc.state & 1) == 0) /* faulty */ |
469 | continue; | |
b3b4e8a7 N |
470 | dev = makedev(disc.major, disc.minor); |
471 | if (stb.st_rdev == dev) | |
472 | /* already did that one */ | |
473 | continue; | |
474 | stb.st_rdev = dev; | |
b80da661 | 475 | next = dv; |
b3b4e8a7 N |
476 | /* same slot again next time - things might |
477 | * have reshuffled */ | |
478 | jnext = j; | |
b80da661 NB |
479 | sprintf(dvname,"%d:%d", disc.major, disc.minor); |
480 | dnprintable = dvname; | |
481 | break; | |
482 | } | |
5b660791 | 483 | if (next != dv) |
b80da661 NB |
484 | continue; |
485 | } else if (strcmp(dv->devname, "detached") == 0) { | |
9e6d9291 | 486 | int remaining_disks = array.nr_disks; |
b80da661 | 487 | if (dv->disposition != 'r' && dv->disposition != 'f') { |
e7b84f9d | 488 | pr_err("%s only meaningful " |
b80da661 NB |
489 | "with -r of -f, not -%c\n", |
490 | dv->devname, dv->disposition); | |
bcbb3112 | 491 | goto abort; |
b80da661 | 492 | } |
480f3566 | 493 | for (; j < MAX_DISKS && remaining_disks > 0; j++) { |
b80da661 | 494 | int sfd; |
f21e18ca | 495 | unsigned dev; |
b80da661 NB |
496 | disc.number = j; |
497 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
498 | continue; | |
499 | if (disc.major == 0 && disc.minor == 0) | |
500 | continue; | |
9e6d9291 | 501 | remaining_disks --; |
b80da661 NB |
502 | sprintf(dvname,"%d:%d", disc.major, disc.minor); |
503 | sfd = dev_open(dvname, O_RDONLY); | |
504 | if (sfd >= 0) { | |
505 | close(sfd); | |
506 | continue; | |
507 | } | |
508 | if (dv->disposition == 'f' && | |
509 | (disc.state & 1) == 1) /* already faulty */ | |
510 | continue; | |
511 | if (errno != ENXIO) | |
512 | continue; | |
b3b4e8a7 N |
513 | dev = makedev(disc.major, disc.minor); |
514 | if (stb.st_rdev == dev) | |
515 | /* already did that one */ | |
516 | continue; | |
517 | stb.st_rdev = dev; | |
b80da661 | 518 | next = dv; |
b3b4e8a7 N |
519 | /* same slot again next time - things might |
520 | * have reshuffled */ | |
521 | jnext = j; | |
b80da661 NB |
522 | dnprintable = dvname; |
523 | break; | |
524 | } | |
5b660791 | 525 | if (next != dv) |
b80da661 | 526 | continue; |
a4e13010 | 527 | } else if (strcmp(dv->devname, "missing") == 0) { |
c8e1a230 | 528 | if (dv->disposition != 'A') { |
e7b84f9d | 529 | pr_err("'missing' only meaningful " |
a4e13010 | 530 | "with --re-add\n"); |
bcbb3112 | 531 | goto abort; |
a4e13010 N |
532 | } |
533 | if (add_devlist == NULL) | |
534 | add_devlist = conf_get_devs(); | |
535 | if (add_devlist == NULL) { | |
e7b84f9d | 536 | pr_err("no devices to scan for missing members."); |
a4e13010 N |
537 | continue; |
538 | } | |
539 | add_dev = add_devlist->devname; | |
540 | add_devlist = add_devlist->next; | |
541 | if (add_devlist != NULL) | |
542 | next = dv; | |
543 | if (stat(add_dev, &stb) < 0) | |
544 | continue; | |
98d27e39 | 545 | } else if (strchr(dv->devname, '/') == NULL && |
93601c43 | 546 | strchr(dv->devname, ':') == NULL && |
98d27e39 N |
547 | strlen(dv->devname) < 50) { |
548 | /* Assume this is a kernel-internal name like 'sda1' */ | |
549 | int found = 0; | |
550 | char dname[55]; | |
551 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
e7b84f9d | 552 | pr_err("%s only meaningful " |
cfad27a9 | 553 | "with -r or -f, not -%c\n", |
98d27e39 | 554 | dv->devname, dv->disposition); |
bcbb3112 | 555 | goto abort; |
98d27e39 N |
556 | } |
557 | ||
558 | sprintf(dname, "dev-%s", dv->devname); | |
559 | sysfd = sysfs_open(fd2devnum(fd), dname, "block/dev"); | |
560 | if (sysfd >= 0) { | |
561 | char dn[20]; | |
562 | int mj,mn; | |
563 | if (sysfs_fd_get_str(sysfd, dn, 20) > 0 && | |
564 | sscanf(dn, "%d:%d", &mj,&mn) == 2) { | |
565 | stb.st_rdev = makedev(mj,mn); | |
566 | found = 1; | |
567 | } | |
568 | close(sysfd); | |
569 | sysfd = -1; | |
570 | } | |
571 | if (!found) { | |
572 | sysfd = sysfs_open(fd2devnum(fd), dname, "state"); | |
573 | if (sysfd < 0) { | |
e7b84f9d | 574 | pr_err("%s does not appear " |
98d27e39 N |
575 | "to be a component of %s\n", |
576 | dv->devname, devname); | |
bcbb3112 | 577 | goto abort; |
98d27e39 N |
578 | } |
579 | } | |
b80da661 NB |
580 | } else { |
581 | j = 0; | |
582 | ||
c7b47447 | 583 | tfd = dev_open(dv->devname, O_RDONLY); |
5a9de8db N |
584 | if (tfd < 0 && dv->disposition == 'r' && |
585 | lstat(dv->devname, &stb) == 0) | |
586 | /* Be happy, the lstat worked, that is | |
587 | * enough for --remove | |
588 | */ | |
589 | ; | |
590 | else { | |
591 | if (tfd < 0 || fstat(tfd, &stb) != 0) { | |
e7b84f9d | 592 | pr_err("cannot find %s: %s\n", |
5a9de8db N |
593 | dv->devname, strerror(errno)); |
594 | if (tfd >= 0) | |
595 | close(tfd); | |
bcbb3112 | 596 | goto abort; |
5a9de8db N |
597 | } |
598 | close(tfd); | |
cfad27a9 | 599 | tfd = -1; |
b80da661 NB |
600 | } |
601 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
e7b84f9d | 602 | pr_err("%s is not a " |
b80da661 NB |
603 | "block device.\n", |
604 | dv->devname); | |
bcbb3112 | 605 | goto abort; |
b80da661 | 606 | } |
682c7051 | 607 | } |
cd29a5c8 | 608 | switch(dv->disposition){ |
682c7051 | 609 | default: |
e7b84f9d | 610 | pr_err("internal error - devmode[%s]=%d\n", |
c913b90e | 611 | dv->devname, dv->disposition); |
bcbb3112 | 612 | goto abort; |
682c7051 | 613 | case 'a': |
c8e1a230 | 614 | case 'A': |
4a39c6f2 | 615 | /* add the device */ |
4725bc31 | 616 | if (subarray) { |
e7b84f9d | 617 | pr_err("Cannot add disks to a" |
f7dd881f DW |
618 | " \'member\' array, perform this" |
619 | " operation on the parent container\n"); | |
bcbb3112 | 620 | goto abort; |
f94d52f4 | 621 | } |
f277ce36 | 622 | /* Make sure it isn't in use (in 2.6 or later) */ |
a4e13010 N |
623 | tfd = dev_open(add_dev, O_RDONLY|O_EXCL|O_DIRECT); |
624 | if (tfd < 0 && add_dev != dv->devname) | |
625 | continue; | |
0fbf459d | 626 | if (tfd < 0) { |
e7b84f9d | 627 | pr_err("Cannot open %s: %s\n", |
d7eaf49f | 628 | dv->devname, strerror(errno)); |
bcbb3112 | 629 | goto abort; |
d7eaf49f | 630 | } |
9f584691 N |
631 | if (!frozen) { |
632 | if (sysfs_freeze_array(&info) == 1) | |
633 | frozen = 1; | |
634 | else | |
635 | frozen = -1; | |
636 | } | |
3da92f27 | 637 | |
1686dc25 | 638 | st = dup_super(tst); |
3da92f27 | 639 | |
fe80f49b | 640 | if (array.not_persistent==0) |
3da92f27 NB |
641 | st->ss->load_super(st, tfd, NULL); |
642 | ||
a4e13010 N |
643 | if (add_dev == dv->devname) { |
644 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { | |
093d9187 | 645 | st->ss->free_super(st); |
a4e13010 | 646 | close(tfd); |
bcbb3112 | 647 | goto abort; |
a4e13010 N |
648 | } |
649 | } else if (!get_dev_size(tfd, NULL, &ldsize)) { | |
093d9187 | 650 | st->ss->free_super(st); |
4a39c6f2 | 651 | close(tfd); |
cfad27a9 | 652 | tfd = -1; |
a4e13010 | 653 | continue; |
4a39c6f2 | 654 | } |
f94d52f4 | 655 | |
11b391ec N |
656 | if (tst->ss->validate_geometry( |
657 | tst, array.level, array.layout, | |
658 | array.raid_disks, NULL, | |
659 | ldsize >> 9, NULL, NULL, 0) == 0) { | |
660 | if (!force) { | |
e7b84f9d N |
661 | pr_err("%s is larger than %s can " |
662 | "effectively use.\n" | |
663 | " Add --force is you " | |
664 | "really want to add this device.\n", | |
665 | add_dev, devname); | |
093d9187 | 666 | st->ss->free_super(st); |
11b391ec | 667 | close(tfd); |
bcbb3112 | 668 | goto abort; |
11b391ec | 669 | } |
e7b84f9d N |
670 | pr_err("%s is larger than %s can " |
671 | "effectively use.\n" | |
672 | " Adding anyway as --force " | |
673 | "was given.\n", | |
674 | add_dev, devname); | |
11b391ec | 675 | } |
f94d52f4 NB |
676 | if (!tst->ss->external && |
677 | array.major_version == 0 && | |
60d9a174 | 678 | md_get_version(fd)%100 < 2) { |
a4e13010 | 679 | close(tfd); |
093d9187 | 680 | st->ss->free_super(st); |
cfad27a9 | 681 | tfd = -1; |
892debc8 NB |
682 | if (ioctl(fd, HOT_ADD_DISK, |
683 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f | 684 | if (verbose >= 0) |
e7b84f9d | 685 | pr_err("hot added %s\n", |
a4e13010 | 686 | add_dev); |
892debc8 NB |
687 | continue; |
688 | } | |
689 | ||
e7b84f9d | 690 | pr_err("hot add failed for %s: %s\n", |
a4e13010 | 691 | add_dev, strerror(errno)); |
bcbb3112 | 692 | goto abort; |
cd29a5c8 | 693 | } |
892debc8 | 694 | |
43dad3d6 | 695 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 696 | |
fe80f49b | 697 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
698 | * a spare slot to use. |
699 | * For 'external' array (well, container based), | |
700 | * We can just load the metadata for the array. | |
fe80f49b | 701 | */ |
a4e13010 N |
702 | if (tst->sb) |
703 | /* already loaded */; | |
704 | else if (tst->ss->external) { | |
0fb69d1d | 705 | tst->ss->load_container(tst, fd, NULL); |
43dad3d6 | 706 | } else for (j = 0; j < tst->max_devs; j++) { |
fe80f49b NB |
707 | char *dev; |
708 | int dfd; | |
709 | disc.number = j; | |
710 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
711 | continue; | |
712 | if (disc.major==0 && disc.minor==0) | |
713 | continue; | |
714 | if ((disc.state & 4)==0) continue; /* sync */ | |
715 | /* Looks like a good device to try */ | |
16c6fa80 | 716 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 717 | if (!dev) continue; |
16c6fa80 | 718 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 719 | if (dfd < 0) continue; |
3da92f27 NB |
720 | if (tst->ss->load_super(tst, dfd, |
721 | NULL)) { | |
fe80f49b NB |
722 | close(dfd); |
723 | continue; | |
724 | } | |
892debc8 | 725 | close(dfd); |
fe80f49b NB |
726 | break; |
727 | } | |
43dad3d6 | 728 | /* FIXME this is a bad test to be using */ |
c8e1a230 | 729 | if (!tst->sb && dv->disposition == 'A') { |
c69ffac0 N |
730 | /* we are re-adding a device to a |
731 | * completely dead array - have to depend | |
732 | * on kernel to check | |
733 | */ | |
734 | } else if (!tst->sb) { | |
a4e13010 | 735 | close(tfd); |
093d9187 | 736 | st->ss->free_super(st); |
e7b84f9d | 737 | pr_err("cannot load array metadata from %s\n", devname); |
bcbb3112 | 738 | goto abort; |
fe80f49b | 739 | } |
2a528478 N |
740 | |
741 | /* Make sure device is large enough */ | |
742 | if (tst->ss->avail_size(tst, ldsize/512) < | |
743 | array_size) { | |
a4e13010 | 744 | close(tfd); |
cfad27a9 | 745 | tfd = -1; |
093d9187 | 746 | st->ss->free_super(st); |
a4e13010 N |
747 | if (add_dev != dv->devname) |
748 | continue; | |
e7b84f9d | 749 | pr_err("%s not large enough to join array\n", |
2a528478 | 750 | dv->devname); |
bcbb3112 | 751 | goto abort; |
2a528478 N |
752 | } |
753 | ||
fe80f49b NB |
754 | /* Possibly this device was recently part of the array |
755 | * and was temporarily removed, and is now being re-added. | |
756 | * If so, we can simply re-add it. | |
757 | */ | |
7eae7080 | 758 | |
873eec46 | 759 | if (st->sb) { |
8453e704 | 760 | struct mdinfo mdi; |
a5d85af7 | 761 | st->ss->getinfo_super(st, &mdi, NULL); |
3da92f27 | 762 | st->ss->uuid_from_super(st, ouuid); |
c69ffac0 N |
763 | if (tst->sb) |
764 | tst->ss->uuid_from_super(tst, duuid); | |
765 | else | |
766 | /* Assume uuid matches: kernel will check */ | |
767 | memcpy(duuid, ouuid, sizeof(ouuid)); | |
8453e704 N |
768 | if ((mdi.disk.state & (1<<MD_DISK_ACTIVE)) && |
769 | !(mdi.disk.state & (1<<MD_DISK_FAULTY)) && | |
770 | memcmp(duuid, ouuid, sizeof(ouuid))==0) { | |
771 | /* look like it is worth a try. Need to | |
772 | * make sure kernel will accept it though. | |
fe80f49b | 773 | */ |
873eec46 N |
774 | /* re-add doesn't work for version-1 superblocks |
775 | * before 2.6.18 :-( | |
776 | */ | |
777 | if (array.major_version == 1 && | |
778 | get_linux_version() <= 2006018) | |
779 | goto skip_re_add; | |
8453e704 N |
780 | disc.number = mdi.disk.number; |
781 | if (ioctl(fd, GET_DISK_INFO, &disc) != 0 | |
782 | || disc.major != 0 || disc.minor != 0 | |
c69ffac0 | 783 | ) |
8453e704 | 784 | goto skip_re_add; |
fe80f49b NB |
785 | disc.major = major(stb.st_rdev); |
786 | disc.minor = minor(stb.st_rdev); | |
787 | disc.number = mdi.disk.number; | |
788 | disc.raid_disk = mdi.disk.raid_disk; | |
789 | disc.state = mdi.disk.state; | |
b3d31955 | 790 | if (dv->writemostly == 1) |
4d20d744 | 791 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
792 | if (dv->writemostly == 2) |
793 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
a4e13010 N |
794 | remove_partitions(tfd); |
795 | close(tfd); | |
796 | tfd = -1; | |
16715c01 | 797 | if (update || dv->writemostly > 0) { |
833bb0f8 N |
798 | int rv = -1; |
799 | tfd = dev_open(dv->devname, O_RDWR); | |
16715c01 | 800 | if (tfd < 0) { |
e7b84f9d | 801 | pr_err("failed to open %s for" |
16715c01 | 802 | " superblock update during re-add\n", dv->devname); |
093d9187 | 803 | st->ss->free_super(st); |
bcbb3112 | 804 | goto abort; |
16715c01 | 805 | } |
833bb0f8 | 806 | |
16715c01 DL |
807 | if (dv->writemostly == 1) |
808 | rv = st->ss->update_super( | |
809 | st, NULL, "writemostly", | |
810 | devname, verbose, 0, NULL); | |
811 | if (dv->writemostly == 2) | |
812 | rv = st->ss->update_super( | |
813 | st, NULL, "readwrite", | |
814 | devname, verbose, 0, NULL); | |
815 | if (update) | |
833bb0f8 N |
816 | rv = st->ss->update_super( |
817 | st, NULL, update, | |
818 | devname, verbose, 0, NULL); | |
819 | if (rv == 0) | |
c0f8269d | 820 | rv = st->ss->store_super(st, tfd); |
833bb0f8 N |
821 | close(tfd); |
822 | tfd = -1; | |
823 | if (rv != 0) { | |
e7b84f9d N |
824 | pr_err("failed to update" |
825 | " superblock during re-add\n"); | |
093d9187 | 826 | st->ss->free_super(st); |
bcbb3112 | 827 | goto abort; |
833bb0f8 N |
828 | } |
829 | } | |
5c64fcb5 N |
830 | /* don't even try if disk is marked as faulty */ |
831 | errno = 0; | |
8453e704 | 832 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
fe80f49b | 833 | if (verbose >= 0) |
e7b84f9d | 834 | pr_err("re-added %s\n", add_dev); |
7d2e6486 | 835 | count++; |
093d9187 | 836 | st->ss->free_super(st); |
308e1801 | 837 | continue; |
fe80f49b | 838 | } |
c9f39c1b | 839 | if (errno == ENOMEM || errno == EROFS) { |
e7b84f9d | 840 | pr_err("add new device failed for %s: %s\n", |
a4e13010 | 841 | add_dev, strerror(errno)); |
093d9187 | 842 | st->ss->free_super(st); |
a4e13010 N |
843 | if (add_dev != dv->devname) |
844 | continue; | |
bcbb3112 | 845 | goto abort; |
c9f39c1b | 846 | } |
fe80f49b | 847 | } |
0a999759 | 848 | skip_re_add: |
1cc7f4fe | 849 | st->ss->free_super(st); |
892debc8 | 850 | } |
a4e13010 N |
851 | if (add_dev != dv->devname) { |
852 | if (verbose > 0) | |
e7b84f9d N |
853 | pr_err("--re-add for %s to %s is not possible\n", |
854 | add_dev, devname); | |
cfad27a9 | 855 | if (tfd >= 0) { |
a4e13010 | 856 | close(tfd); |
cfad27a9 DL |
857 | tfd = -1; |
858 | } | |
a4e13010 N |
859 | continue; |
860 | } | |
c8e1a230 | 861 | if (dv->disposition == 'A') { |
a4e13010 N |
862 | if (tfd >= 0) |
863 | close(tfd); | |
e7b84f9d N |
864 | pr_err("--re-add for %s to %s is not possible\n", |
865 | dv->devname, devname); | |
bcbb3112 | 866 | goto abort; |
751fd6c0 | 867 | } |
0a999759 | 868 | if (array.active_disks < array.raid_disks) { |
503975b9 | 869 | char *avail = xcalloc(array.raid_disks, 1); |
0a999759 N |
870 | int d; |
871 | int found = 0; | |
872 | ||
873 | for (d = 0; d < MAX_DISKS && found < array.active_disks; d++) { | |
874 | disc.number = d; | |
875 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
876 | continue; | |
877 | if (disc.major == 0 && disc.minor == 0) | |
878 | continue; | |
879 | if (!(disc.state & (1<<MD_DISK_SYNC))) | |
880 | continue; | |
881 | avail[disc.raid_disk] = 1; | |
882 | found++; | |
883 | } | |
884 | array_failed = !enough(array.level, array.raid_disks, | |
885 | array.layout, 1, avail); | |
886 | } else | |
887 | array_failed = 0; | |
888 | if (array_failed) { | |
e7b84f9d | 889 | pr_err("%s has failed so using --add cannot work and might destroy\n", |
0a999759 | 890 | devname); |
e7b84f9d | 891 | pr_err("data on %s. You should stop the array and re-assemble it.\n", |
8453e704 N |
892 | dv->devname); |
893 | if (tfd >= 0) | |
894 | close(tfd); | |
bcbb3112 | 895 | goto abort; |
8453e704 | 896 | } |
4a39c6f2 NB |
897 | } else { |
898 | /* non-persistent. Must ensure that new drive | |
899 | * is at least array.size big. | |
900 | */ | |
7a3be72f | 901 | if (ldsize/512 < array_size) { |
e7b84f9d | 902 | pr_err("%s not large enough to join array\n", |
4a39c6f2 | 903 | dv->devname); |
cfad27a9 DL |
904 | if (tfd >= 0) |
905 | close(tfd); | |
bcbb3112 | 906 | goto abort; |
4a39c6f2 | 907 | } |
892debc8 | 908 | } |
a4e13010 N |
909 | /* committed to really trying this device now*/ |
910 | if (tfd >= 0) { | |
911 | remove_partitions(tfd); | |
912 | close(tfd); | |
cfad27a9 | 913 | tfd = -1; |
a4e13010 | 914 | } |
7eae7080 NB |
915 | /* in 2.6.17 and earlier, version-1 superblocks won't |
916 | * use the number we write, but will choose a free number. | |
917 | * we must choose the same free number, which requires | |
918 | * starting at 'raid_disks' and counting up | |
919 | */ | |
3da92f27 | 920 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 921 | disc.number = j; |
682c7051 NB |
922 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
923 | break; | |
924 | if (disc.major==0 && disc.minor==0) | |
925 | break; | |
926 | if (disc.state & 8) /* removed */ | |
927 | break; | |
928 | } | |
0df46c2a NB |
929 | disc.major = major(stb.st_rdev); |
930 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
931 | disc.number =j; |
932 | disc.state = 0; | |
02c39ab1 | 933 | if (array.not_persistent==0) { |
111d01fc | 934 | int dfd; |
b3d31955 | 935 | if (dv->writemostly == 1) |
fe80f49b | 936 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
3b435195 | 937 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
f20c3968 DW |
938 | if (tst->ss->add_to_super(tst, &disc, dfd, |
939 | dv->devname)) { | |
f20c3968 | 940 | close(dfd); |
bcbb3112 | 941 | goto abort; |
f20c3968 | 942 | } |
1cc7f4fe N |
943 | if (tst->ss->write_init_super(tst)) { |
944 | close(dfd); | |
bcbb3112 | 945 | goto abort; |
1cc7f4fe | 946 | } |
c8e1a230 | 947 | } else if (dv->disposition == 'A') { |
fe80f49b NB |
948 | /* this had better be raid1. |
949 | * As we are "--re-add"ing we must find a spare slot | |
950 | * to fill. | |
951 | */ | |
503975b9 | 952 | char *used = xcalloc(array.raid_disks, 1); |
3da92f27 | 953 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
954 | mdu_disk_info_t disc2; |
955 | disc2.number = j; | |
956 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
957 | continue; | |
958 | if (disc2.major==0 && disc2.minor==0) | |
959 | continue; | |
960 | if (disc2.state & 8) /* removed */ | |
961 | continue; | |
962 | if (disc2.raid_disk < 0) | |
963 | continue; | |
964 | if (disc2.raid_disk > array.raid_disks) | |
965 | continue; | |
966 | used[disc2.raid_disk] = 1; | |
967 | } | |
968 | for (j=0 ; j<array.raid_disks; j++) | |
969 | if (!used[j]) { | |
970 | disc.raid_disk = j; | |
971 | disc.state |= (1<<MD_DISK_SYNC); | |
972 | break; | |
973 | } | |
0eb26465 | 974 | free(used); |
fe80f49b | 975 | } |
b3d31955 | 976 | if (dv->writemostly == 1) |
d8def61c | 977 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 | 978 | if (tst->ss->external) { |
73cb8d43 AK |
979 | /* add a disk |
980 | * to an external metadata container */ | |
43dad3d6 DW |
981 | struct mdinfo new_mdi; |
982 | struct mdinfo *sra; | |
983 | int container_fd; | |
984 | int devnum = fd2devnum(fd); | |
02c39ab1 | 985 | int dfd; |
43dad3d6 DW |
986 | |
987 | container_fd = open_dev_excl(devnum); | |
988 | if (container_fd < 0) { | |
e7b84f9d N |
989 | pr_err("add failed for %s:" |
990 | " could not get exclusive access to container\n", | |
991 | dv->devname); | |
562e70e4 | 992 | tst->ss->free_super(tst); |
bcbb3112 | 993 | goto abort; |
43dad3d6 DW |
994 | } |
995 | ||
02c39ab1 | 996 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
d6221e66 N |
997 | if (mdmon_running(tst->container_dev)) |
998 | tst->update_tail = &tst->updates; | |
02c39ab1 N |
999 | if (tst->ss->add_to_super(tst, &disc, dfd, |
1000 | dv->devname)) { | |
1001 | close(dfd); | |
1002 | close(container_fd); | |
bcbb3112 | 1003 | goto abort; |
02c39ab1 | 1004 | } |
c0f8269d AK |
1005 | if (tst->update_tail) |
1006 | flush_metadata_updates(tst); | |
d6221e66 | 1007 | else |
c0f8269d | 1008 | tst->ss->sync_metadata(tst); |
02c39ab1 | 1009 | |
43dad3d6 DW |
1010 | sra = sysfs_read(container_fd, -1, 0); |
1011 | if (!sra) { | |
e7b84f9d | 1012 | pr_err("add failed for %s: sysfs_read failed\n", |
43dad3d6 DW |
1013 | dv->devname); |
1014 | close(container_fd); | |
562e70e4 | 1015 | tst->ss->free_super(tst); |
bcbb3112 | 1016 | goto abort; |
43dad3d6 DW |
1017 | } |
1018 | sra->array.level = LEVEL_CONTAINER; | |
1019 | /* Need to set data_offset and component_size */ | |
a5d85af7 | 1020 | tst->ss->getinfo_super(tst, &new_mdi, NULL); |
43dad3d6 DW |
1021 | new_mdi.disk.major = disc.major; |
1022 | new_mdi.disk.minor = disc.minor; | |
d23534e4 | 1023 | new_mdi.recovery_start = 0; |
1cc7f4fe N |
1024 | /* Make sure fds are closed as they are O_EXCL which |
1025 | * would block add_disk */ | |
1026 | tst->ss->free_super(tst); | |
462906cd | 1027 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { |
e7b84f9d | 1028 | pr_err("add new device to external metadata" |
43dad3d6 DW |
1029 | " failed for %s\n", dv->devname); |
1030 | close(container_fd); | |
73cb8d43 | 1031 | sysfs_free(sra); |
bcbb3112 | 1032 | goto abort; |
43dad3d6 | 1033 | } |
983fff45 | 1034 | ping_monitor_by_id(devnum); |
43dad3d6 DW |
1035 | sysfs_free(sra); |
1036 | close(container_fd); | |
562e70e4 N |
1037 | } else { |
1038 | tst->ss->free_super(tst); | |
1039 | if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
e7b84f9d | 1040 | pr_err("add new device failed for %s as %d: %s\n", |
562e70e4 | 1041 | dv->devname, j, strerror(errno)); |
bcbb3112 | 1042 | goto abort; |
562e70e4 | 1043 | } |
682c7051 | 1044 | } |
dab6685f | 1045 | if (verbose >= 0) |
e7b84f9d | 1046 | pr_err("added %s\n", dv->devname); |
682c7051 NB |
1047 | break; |
1048 | ||
1049 | case 'r': | |
1050 | /* hot remove */ | |
4725bc31 | 1051 | if (subarray) { |
e7b84f9d | 1052 | pr_err("Cannot remove disks from a" |
f7dd881f DW |
1053 | " \'member\' array, perform this" |
1054 | " operation on the parent container\n"); | |
98d27e39 N |
1055 | if (sysfd >= 0) |
1056 | close(sysfd); | |
bcbb3112 | 1057 | goto abort; |
f94d52f4 NB |
1058 | } |
1059 | if (tst->ss->external) { | |
1060 | /* To remove a device from a container, we must | |
1061 | * check that it isn't in use in an array. | |
1062 | * This involves looking in the 'holders' | |
1063 | * directory - there must be just one entry, | |
1064 | * the container. | |
1065 | * To ensure that it doesn't get used as a | |
1066 | * hold spare while we are checking, we | |
1067 | * get an O_EXCL open on the container | |
1068 | */ | |
1069 | int dnum = fd2devnum(fd); | |
1070 | lfd = open_dev_excl(dnum); | |
1071 | if (lfd < 0) { | |
e7b84f9d N |
1072 | pr_err("Cannot get exclusive access " |
1073 | " to container - odd\n"); | |
98d27e39 N |
1074 | if (sysfd >= 0) |
1075 | close(sysfd); | |
bcbb3112 | 1076 | goto abort; |
f94d52f4 | 1077 | } |
85f9b5f7 DW |
1078 | /* in the detached case it is not possible to |
1079 | * check if we are the unique holder, so just | |
1080 | * rely on the 'detached' checks | |
1081 | */ | |
1082 | if (strcmp(dv->devname, "detached") == 0 || | |
98d27e39 | 1083 | sysfd >= 0 || |
85f9b5f7 DW |
1084 | sysfs_unique_holder(dnum, stb.st_rdev)) |
1085 | /* pass */; | |
1086 | else { | |
e7b84f9d N |
1087 | pr_err("%s is %s, cannot remove.\n", |
1088 | dnprintable, | |
1089 | errno == EEXIST ? "still in use": | |
1090 | "not a member"); | |
f94d52f4 | 1091 | close(lfd); |
bcbb3112 | 1092 | goto abort; |
f94d52f4 NB |
1093 | } |
1094 | } | |
82b27616 | 1095 | /* FIXME check that it is a current member */ |
98d27e39 N |
1096 | if (sysfd >= 0) { |
1097 | /* device has been removed and we don't know | |
1098 | * the major:minor number | |
1099 | */ | |
1100 | int n = write(sysfd, "remove", 6); | |
1101 | if (n != 6) | |
f94d52f4 | 1102 | err = -1; |
98d27e39 N |
1103 | else |
1104 | err = 0; | |
1105 | close(sysfd); | |
1106 | sysfd = -1; | |
1107 | } else { | |
1108 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); | |
1109 | if (err && errno == ENODEV) { | |
1110 | /* Old kernels rejected this if no personality | |
1111 | * registered */ | |
1112 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
1113 | struct mdinfo *dv = NULL; | |
1114 | if (sra) | |
1115 | dv = sra->devs; | |
1116 | for ( ; dv ; dv=dv->next) | |
f21e18ca N |
1117 | if (dv->disk.major == (int)major(stb.st_rdev) && |
1118 | dv->disk.minor == (int)minor(stb.st_rdev)) | |
98d27e39 N |
1119 | break; |
1120 | if (dv) | |
1121 | err = sysfs_set_str(sra, dv, | |
1122 | "state", "remove"); | |
1123 | else | |
1124 | err = -1; | |
1125 | if (sra) | |
1126 | sysfs_free(sra); | |
1127 | } | |
f94d52f4 NB |
1128 | } |
1129 | if (err) { | |
e7b84f9d N |
1130 | pr_err("hot remove failed " |
1131 | "for %s: %s\n", dnprintable, | |
1132 | strerror(errno)); | |
f94d52f4 NB |
1133 | if (lfd >= 0) |
1134 | close(lfd); | |
bcbb3112 | 1135 | goto abort; |
682c7051 | 1136 | } |
313a4a82 DW |
1137 | if (tst->ss->external) { |
1138 | /* | |
1139 | * Before dropping our exclusive open we make an | |
1140 | * attempt at preventing mdmon from seeing an | |
1141 | * 'add' event before reconciling this 'remove' | |
1142 | * event. | |
1143 | */ | |
1144 | char *name = devnum2devname(fd2devnum(fd)); | |
1145 | ||
1146 | if (!name) { | |
e7b84f9d | 1147 | pr_err("unable to get container name\n"); |
bcbb3112 | 1148 | goto abort; |
313a4a82 DW |
1149 | } |
1150 | ||
1151 | ping_manager(name); | |
1152 | free(name); | |
1153 | } | |
98d27e39 N |
1154 | if (lfd >= 0) |
1155 | close(lfd); | |
7d2e6486 | 1156 | count++; |
dab6685f | 1157 | if (verbose >= 0) |
e7b84f9d | 1158 | pr_err("hot removed %s from %s\n", |
29ba4804 | 1159 | dnprintable, devname); |
682c7051 NB |
1160 | break; |
1161 | ||
1162 | case 'f': /* set faulty */ | |
1163 | /* FIXME check current member */ | |
98d27e39 N |
1164 | if ((sysfd >= 0 && write(sysfd, "faulty", 6) != 6) || |
1165 | (sysfd < 0 && ioctl(fd, SET_DISK_FAULTY, | |
1166 | (unsigned long) stb.st_rdev))) { | |
e7b84f9d | 1167 | pr_err("set device faulty failed for %s: %s\n", |
b80da661 | 1168 | dnprintable, strerror(errno)); |
98d27e39 N |
1169 | if (sysfd >= 0) |
1170 | close(sysfd); | |
bcbb3112 | 1171 | goto abort; |
682c7051 | 1172 | } |
98d27e39 N |
1173 | if (sysfd >= 0) |
1174 | close(sysfd); | |
1175 | sysfd = -1; | |
7d2e6486 | 1176 | count++; |
dab6685f | 1177 | if (verbose >= 0) |
e7b84f9d | 1178 | pr_err("set %s faulty in %s\n", |
b80da661 | 1179 | dnprintable, devname); |
682c7051 NB |
1180 | break; |
1181 | } | |
1182 | } | |
9f584691 N |
1183 | if (frozen > 0) |
1184 | sysfs_set_str(&info, NULL, "sync_action","idle"); | |
7d2e6486 N |
1185 | if (test && count == 0) |
1186 | return 2; | |
682c7051 | 1187 | return 0; |
bcbb3112 N |
1188 | |
1189 | abort: | |
9f584691 N |
1190 | if (frozen > 0) |
1191 | sysfs_set_str(&info, NULL, "sync_action","idle"); | |
bcbb3112 | 1192 | return 1; |
64c4757e | 1193 | } |
1f48664b NB |
1194 | |
1195 | int autodetect(void) | |
1196 | { | |
1197 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
1198 | int rv = 1; | |
1199 | int fd = dev_open("9:0", O_RDONLY); | |
1200 | if (fd >= 0) { | |
1201 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
1202 | rv = 0; | |
1203 | close(fd); | |
1204 | } | |
1205 | return rv; | |
1206 | } | |
aa534678 | 1207 | |
ba728be7 | 1208 | int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident *ident, int verbose) |
aa534678 DW |
1209 | { |
1210 | struct supertype supertype, *st = &supertype; | |
1211 | int fd, rv = 2; | |
1212 | ||
1213 | memset(st, 0, sizeof(*st)); | |
aa534678 | 1214 | |
ba728be7 | 1215 | fd = open_subarray(dev, subarray, st, verbose < 0); |
aa534678 DW |
1216 | if (fd < 0) |
1217 | return 2; | |
1218 | ||
1219 | if (!st->ss->update_subarray) { | |
ba728be7 | 1220 | if (verbose >= 0) |
e7b84f9d N |
1221 | pr_err("Operation not supported for %s metadata\n", |
1222 | st->ss->name); | |
aa534678 DW |
1223 | goto free_super; |
1224 | } | |
1225 | ||
1226 | if (mdmon_running(st->devnum)) | |
1227 | st->update_tail = &st->updates; | |
1228 | ||
a951a4f7 | 1229 | rv = st->ss->update_subarray(st, subarray, update, ident); |
aa534678 DW |
1230 | |
1231 | if (rv) { | |
ba728be7 | 1232 | if (verbose >= 0) |
e7b84f9d | 1233 | pr_err("Failed to update %s of subarray-%s in %s\n", |
aa534678 DW |
1234 | update, subarray, dev); |
1235 | } else if (st->update_tail) | |
1236 | flush_metadata_updates(st); | |
1237 | else | |
1238 | st->ss->sync_metadata(st); | |
1239 | ||
ba728be7 | 1240 | if (rv == 0 && strcmp(update, "name") == 0 && verbose >= 0) |
e7b84f9d N |
1241 | pr_err("Updated subarray-%s name from %s, UUIDs may have changed\n", |
1242 | subarray, dev); | |
aa534678 DW |
1243 | |
1244 | free_super: | |
1245 | st->ss->free_super(st); | |
1246 | close(fd); | |
1247 | ||
1248 | return rv; | |
1249 | } | |
d52bb542 AC |
1250 | |
1251 | /* Move spare from one array to another | |
1252 | * If adding to destination array fails | |
1253 | * add back to original array | |
1254 | * Returns 1 on success, 0 on failure */ | |
1255 | int move_spare(char *from_devname, char *to_devname, dev_t devid) | |
1256 | { | |
1257 | struct mddev_dev devlist; | |
1258 | char devname[20]; | |
1259 | ||
1260 | /* try to remove and add */ | |
1261 | int fd1 = open(to_devname, O_RDONLY); | |
1262 | int fd2 = open(from_devname, O_RDONLY); | |
1263 | ||
1264 | if (fd1 < 0 || fd2 < 0) { | |
1265 | if (fd1>=0) close(fd1); | |
1266 | if (fd2>=0) close(fd2); | |
1267 | return 0; | |
1268 | } | |
1269 | ||
1270 | devlist.next = NULL; | |
1271 | devlist.used = 0; | |
d52bb542 AC |
1272 | devlist.writemostly = 0; |
1273 | devlist.devname = devname; | |
1274 | sprintf(devname, "%d:%d", major(devid), minor(devid)); | |
1275 | ||
1276 | devlist.disposition = 'r'; | |
11b391ec | 1277 | if (Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 | 1278 | devlist.disposition = 'a'; |
11b391ec | 1279 | if (Manage_subdevs(to_devname, fd1, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 AC |
1280 | /* make sure manager is aware of changes */ |
1281 | ping_manager(to_devname); | |
1282 | ping_manager(from_devname); | |
1283 | close(fd1); | |
1284 | close(fd2); | |
1285 | return 1; | |
1286 | } | |
11b391ec | 1287 | else Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0); |
d52bb542 AC |
1288 | } |
1289 | close(fd1); | |
1290 | close(fd2); | |
1291 | return 0; | |
1292 | } | |
435d4ebb | 1293 | #endif |