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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 | ||
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 */ |
bccd8153 | 186 | int rv = 0; |
82b27616 NB |
187 | |
188 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
189 | if (ioctl(fd, STOP_MD, 0)) { | |
e7b84f9d N |
190 | pr_err("stopping device %s " |
191 | "failed: %s\n", | |
192 | devname, strerror(errno)); | |
82b27616 NB |
193 | return 1; |
194 | } | |
195 | } | |
aba69144 | 196 | |
682c7051 | 197 | if (md_get_version(fd) < 9000) { |
e7b84f9d | 198 | pr_err("need md driver version 0.90.0 or later\n"); |
682c7051 NB |
199 | return 1; |
200 | } | |
82b27616 | 201 | /* |
682c7051 | 202 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
e7b84f9d | 203 | pr_err("%s does not appear to be active.\n", |
682c7051 NB |
204 | devname); |
205 | return 1; | |
206 | } | |
82b27616 | 207 | */ |
682c7051 NB |
208 | if (runstop>0) { |
209 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
e7b84f9d | 210 | pr_err("failed to run array %s: %s\n", |
682c7051 NB |
211 | devname, strerror(errno)); |
212 | return 1; | |
213 | } | |
8382f19b | 214 | if (quiet <= 0) |
e7b84f9d | 215 | pr_err("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); | |
e7b84f9d N |
235 | pr_err("Cannot get exclusive access to %s:" |
236 | "Perhaps a running " | |
237 | "process, mounted filesystem " | |
238 | "or active volume group?\n", | |
239 | devname); | |
eb0af526 N |
240 | return 1; |
241 | } | |
daf7a3ce NB |
242 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); |
243 | if (mdi && | |
244 | mdi->array.level > 0 && | |
3c558363 | 245 | is_subarray(mdi->text_version)) { |
1ae42d9d | 246 | int err; |
daf7a3ce NB |
247 | /* This is mdmon managed. */ |
248 | close(fd); | |
1ae42d9d KW |
249 | |
250 | count = 25; | |
251 | while (count && | |
252 | (err = sysfs_set_str(mdi, NULL, | |
253 | "array_state", | |
254 | "inactive")) < 0 | |
255 | && errno == EBUSY) { | |
256 | usleep(200000); | |
257 | count--; | |
258 | } | |
259 | if (err && !quiet) { | |
e7b84f9d N |
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) { | |
e7b84f9d N |
271 | pr_err("failed to completely stop %s" |
272 | ": Device is busy\n", | |
273 | devname); | |
bccd8153 JS |
274 | rv = 1; |
275 | goto out; | |
eb0af526 | 276 | } |
ada6c239 N |
277 | } else if (mdi && |
278 | mdi->array.major_version == -1 && | |
279 | mdi->array.minor_version == -2 && | |
3c558363 | 280 | !is_subarray(mdi->text_version)) { |
430ea469 | 281 | struct mdstat_ent *mds, *m; |
ada6c239 N |
282 | /* container, possibly mdmon-managed. |
283 | * Make sure mdmon isn't opening it, which | |
284 | * would interfere with the 'stop' | |
285 | */ | |
286 | ping_monitor(mdi->sys_name); | |
430ea469 N |
287 | |
288 | /* now check that there are no existing arrays | |
289 | * which are members of this array | |
290 | */ | |
291 | mds = mdstat_read(0, 0); | |
292 | for (m=mds; m; m=m->next) | |
293 | if (m->metadata_version && | |
294 | strncmp(m->metadata_version, "external:", 9)==0 && | |
295 | is_subarray(m->metadata_version+9) && | |
296 | devname2devnum(m->metadata_version+10) == devnum) { | |
297 | if (!quiet) | |
e7b84f9d N |
298 | pr_err("Cannot stop container %s: " |
299 | "member %s still active\n", | |
300 | devname, m->dev); | |
430ea469 | 301 | free_mdstat(mds); |
bccd8153 JS |
302 | rv = 1; |
303 | goto out; | |
430ea469 | 304 | } |
daf7a3ce | 305 | } |
daf7a3ce | 306 | |
eb0af526 N |
307 | /* As we have an O_EXCL open, any use of the device |
308 | * which blocks STOP_ARRAY is probably a transient use, | |
309 | * so it is reasonable to retry for a while - 5 seconds. | |
310 | */ | |
fb0d4b9c | 311 | count = 25; err = 0; |
eb0af526 N |
312 | while (count && fd >= 0 |
313 | && (err = ioctl(fd, STOP_ARRAY, NULL)) < 0 | |
314 | && errno == EBUSY) { | |
315 | usleep(200000); | |
316 | count --; | |
317 | } | |
318 | if (fd >= 0 && err) { | |
37ea3936 | 319 | if (quiet == 0) { |
e7b84f9d N |
320 | pr_err("failed to stop array %s: %s\n", |
321 | devname, strerror(errno)); | |
d927f3c4 NB |
322 | if (errno == EBUSY) |
323 | fprintf(stderr, "Perhaps a running " | |
324 | "process, mounted filesystem " | |
325 | "or active volume group?\n"); | |
326 | } | |
bccd8153 JS |
327 | rv = 1; |
328 | goto out; | |
682c7051 | 329 | } |
97590376 | 330 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array |
d49410d3 N |
331 | * was stopped, so We'll do it here just to be sure. Drop any |
332 | * partitions as well... | |
97590376 | 333 | */ |
d49410d3 N |
334 | if (fd >= 0) |
335 | ioctl(fd, BLKRRPART, 0); | |
97590376 N |
336 | if (mdi) |
337 | sysfs_uevent(mdi, "change"); | |
daf7a3ce | 338 | |
4ccad7b1 N |
339 | |
340 | if (devnum != NoMdDev && | |
341 | (stat("/dev/.udev", &stb) != 0 || | |
342 | check_env("MDADM_NO_UDEV"))) { | |
343 | struct map_ent *mp = map_by_devnum(&map, devnum); | |
344 | remove_devices(devnum, mp ? mp->path : NULL); | |
345 | } | |
346 | ||
347 | ||
ab56093f | 348 | if (quiet <= 0) |
e7b84f9d | 349 | pr_err("stopped %s\n", devname); |
4eb26970 DW |
350 | map_lock(&map); |
351 | map_remove(&map, devnum); | |
352 | map_unlock(&map); | |
bccd8153 JS |
353 | out: |
354 | if (mdi) | |
355 | sysfs_free(mdi); | |
682c7051 | 356 | } |
bccd8153 | 357 | return rv; |
64c4757e NB |
358 | } |
359 | ||
dd0781e5 NB |
360 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
361 | { | |
362 | mdu_array_info_t info; | |
363 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
e7b84f9d | 364 | pr_err("Cannot get array information for %s: %s\n", |
dd0781e5 NB |
365 | devname, strerror(errno)); |
366 | return 1; | |
367 | } | |
368 | if (size >= 0) | |
369 | info.size = size; | |
370 | if (raid_disks > 0) | |
371 | info.raid_disks = raid_disks; | |
372 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
e7b84f9d | 373 | pr_err("Cannot set device size/shape for %s: %s\n", |
dd0781e5 NB |
374 | devname, strerror(errno)); |
375 | return 1; | |
376 | } | |
377 | return 0; | |
b5e64645 | 378 | } |
dd0781e5 | 379 | |
64c4757e | 380 | int Manage_subdevs(char *devname, int fd, |
833bb0f8 | 381 | struct mddev_dev *devlist, int verbose, int test, |
11b391ec | 382 | char *update, int force) |
cd29a5c8 | 383 | { |
682c7051 NB |
384 | /* do something to each dev. |
385 | * devmode can be | |
386 | * 'a' - add the device | |
387 | * try HOT_ADD_DISK | |
388 | * If that fails EINVAL, try ADD_NEW_DISK | |
389 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
390 | * device can be 'faulty' or 'detached' in which case all |
391 | * matching devices are removed. | |
682c7051 | 392 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
393 | * device can be 'detached' in which case any device that |
394 | * is inaccessible will be marked faulty. | |
98d27e39 N |
395 | * For 'f' and 'r', the device can also be a kernel-internal |
396 | * name such as 'sdb'. | |
682c7051 | 397 | */ |
a655e550 | 398 | struct mddev_dev *add_devlist = NULL; |
682c7051 NB |
399 | mdu_array_info_t array; |
400 | mdu_disk_info_t disc; | |
7a3be72f | 401 | unsigned long long array_size; |
a655e550 | 402 | struct mddev_dev *dv, *next = NULL; |
682c7051 | 403 | struct stat stb; |
b80da661 | 404 | int j, jnext = 0; |
cfad27a9 | 405 | int tfd = -1; |
3da92f27 | 406 | struct supertype *st, *tst; |
4725bc31 | 407 | char *subarray = NULL; |
fe80f49b NB |
408 | int duuid[4]; |
409 | int ouuid[4]; | |
f94d52f4 | 410 | int lfd = -1; |
98d27e39 | 411 | int sysfd = -1; |
7d2e6486 | 412 | int count = 0; /* number of actions taken */ |
9f584691 N |
413 | struct mdinfo info; |
414 | int frozen = 0; | |
682c7051 NB |
415 | |
416 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
e7b84f9d | 417 | pr_err("cannot get array info for %s\n", |
682c7051 | 418 | devname); |
bcbb3112 | 419 | goto abort; |
682c7051 | 420 | } |
9f584691 | 421 | sysfs_init(&info, fd, 0); |
3da92f27 | 422 | |
7a3be72f NB |
423 | /* array.size is only 32 bit and may be truncated. |
424 | * So read from sysfs if possible, and record number of sectors | |
425 | */ | |
426 | ||
427 | array_size = get_component_size(fd); | |
428 | if (array_size <= 0) | |
429 | array_size = array.size * 2; | |
430 | ||
4725bc31 | 431 | tst = super_by_fd(fd, &subarray); |
3da92f27 | 432 | if (!tst) { |
e7b84f9d | 433 | pr_err("unsupport array - version %d.%d\n", |
3da92f27 | 434 | array.major_version, array.minor_version); |
bcbb3112 | 435 | goto abort; |
3da92f27 NB |
436 | } |
437 | ||
b3b4e8a7 | 438 | stb.st_rdev = 0; |
b80da661 | 439 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 440 | unsigned long long ldsize; |
b80da661 NB |
441 | char dvname[20]; |
442 | char *dnprintable = dv->devname; | |
a4e13010 | 443 | char *add_dev = dv->devname; |
f94d52f4 | 444 | int err; |
0a999759 | 445 | int array_failed; |
4a39c6f2 | 446 | |
b80da661 NB |
447 | next = dv->next; |
448 | jnext = 0; | |
449 | ||
450 | if (strcmp(dv->devname, "failed")==0 || | |
451 | strcmp(dv->devname, "faulty")==0) { | |
9e6d9291 | 452 | int remaining_disks = array.nr_disks; |
b80da661 | 453 | if (dv->disposition != 'r') { |
e7b84f9d | 454 | pr_err("%s only meaningful " |
b80da661 NB |
455 | "with -r, not -%c\n", |
456 | dv->devname, dv->disposition); | |
bcbb3112 | 457 | goto abort; |
b80da661 | 458 | } |
480f3566 | 459 | for (; j < MAX_DISKS && remaining_disks > 0; j++) { |
f21e18ca | 460 | unsigned dev; |
b80da661 NB |
461 | disc.number = j; |
462 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
463 | continue; | |
464 | if (disc.major == 0 && disc.minor == 0) | |
465 | continue; | |
9e6d9291 | 466 | remaining_disks --; |
b80da661 NB |
467 | if ((disc.state & 1) == 0) /* faulty */ |
468 | continue; | |
b3b4e8a7 N |
469 | dev = makedev(disc.major, disc.minor); |
470 | if (stb.st_rdev == dev) | |
471 | /* already did that one */ | |
472 | continue; | |
473 | stb.st_rdev = dev; | |
b80da661 | 474 | next = dv; |
b3b4e8a7 N |
475 | /* same slot again next time - things might |
476 | * have reshuffled */ | |
477 | jnext = j; | |
b80da661 NB |
478 | sprintf(dvname,"%d:%d", disc.major, disc.minor); |
479 | dnprintable = dvname; | |
480 | break; | |
481 | } | |
5b660791 | 482 | if (next != dv) |
b80da661 NB |
483 | continue; |
484 | } else if (strcmp(dv->devname, "detached") == 0) { | |
9e6d9291 | 485 | int remaining_disks = array.nr_disks; |
b80da661 | 486 | if (dv->disposition != 'r' && dv->disposition != 'f') { |
e7b84f9d | 487 | pr_err("%s only meaningful " |
b80da661 NB |
488 | "with -r of -f, not -%c\n", |
489 | dv->devname, dv->disposition); | |
bcbb3112 | 490 | goto abort; |
b80da661 | 491 | } |
480f3566 | 492 | for (; j < MAX_DISKS && remaining_disks > 0; j++) { |
b80da661 | 493 | int sfd; |
f21e18ca | 494 | unsigned dev; |
b80da661 NB |
495 | disc.number = j; |
496 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
497 | continue; | |
498 | if (disc.major == 0 && disc.minor == 0) | |
499 | continue; | |
9e6d9291 | 500 | remaining_disks --; |
b80da661 NB |
501 | sprintf(dvname,"%d:%d", disc.major, disc.minor); |
502 | sfd = dev_open(dvname, O_RDONLY); | |
503 | if (sfd >= 0) { | |
504 | close(sfd); | |
505 | continue; | |
506 | } | |
507 | if (dv->disposition == 'f' && | |
508 | (disc.state & 1) == 1) /* already faulty */ | |
509 | continue; | |
510 | if (errno != ENXIO) | |
511 | continue; | |
b3b4e8a7 N |
512 | dev = makedev(disc.major, disc.minor); |
513 | if (stb.st_rdev == dev) | |
514 | /* already did that one */ | |
515 | continue; | |
516 | stb.st_rdev = dev; | |
b80da661 | 517 | next = dv; |
b3b4e8a7 N |
518 | /* same slot again next time - things might |
519 | * have reshuffled */ | |
520 | jnext = j; | |
b80da661 NB |
521 | dnprintable = dvname; |
522 | break; | |
523 | } | |
5b660791 | 524 | if (next != dv) |
b80da661 | 525 | continue; |
a4e13010 | 526 | } else if (strcmp(dv->devname, "missing") == 0) { |
c8e1a230 | 527 | if (dv->disposition != 'A') { |
e7b84f9d | 528 | pr_err("'missing' only meaningful " |
a4e13010 | 529 | "with --re-add\n"); |
bcbb3112 | 530 | goto abort; |
a4e13010 N |
531 | } |
532 | if (add_devlist == NULL) | |
533 | add_devlist = conf_get_devs(); | |
534 | if (add_devlist == NULL) { | |
e7b84f9d | 535 | pr_err("no devices to scan for missing members."); |
a4e13010 N |
536 | continue; |
537 | } | |
538 | add_dev = add_devlist->devname; | |
539 | add_devlist = add_devlist->next; | |
540 | if (add_devlist != NULL) | |
541 | next = dv; | |
542 | if (stat(add_dev, &stb) < 0) | |
543 | continue; | |
98d27e39 | 544 | } else if (strchr(dv->devname, '/') == NULL && |
93601c43 | 545 | strchr(dv->devname, ':') == NULL && |
98d27e39 N |
546 | strlen(dv->devname) < 50) { |
547 | /* Assume this is a kernel-internal name like 'sda1' */ | |
548 | int found = 0; | |
549 | char dname[55]; | |
550 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
e7b84f9d | 551 | pr_err("%s only meaningful " |
cfad27a9 | 552 | "with -r or -f, not -%c\n", |
98d27e39 | 553 | dv->devname, dv->disposition); |
bcbb3112 | 554 | goto abort; |
98d27e39 N |
555 | } |
556 | ||
557 | sprintf(dname, "dev-%s", dv->devname); | |
558 | sysfd = sysfs_open(fd2devnum(fd), dname, "block/dev"); | |
559 | if (sysfd >= 0) { | |
560 | char dn[20]; | |
561 | int mj,mn; | |
562 | if (sysfs_fd_get_str(sysfd, dn, 20) > 0 && | |
563 | sscanf(dn, "%d:%d", &mj,&mn) == 2) { | |
564 | stb.st_rdev = makedev(mj,mn); | |
565 | found = 1; | |
566 | } | |
567 | close(sysfd); | |
568 | sysfd = -1; | |
569 | } | |
570 | if (!found) { | |
571 | sysfd = sysfs_open(fd2devnum(fd), dname, "state"); | |
572 | if (sysfd < 0) { | |
e7b84f9d | 573 | pr_err("%s does not appear " |
98d27e39 N |
574 | "to be a component of %s\n", |
575 | dv->devname, devname); | |
bcbb3112 | 576 | goto abort; |
98d27e39 N |
577 | } |
578 | } | |
b80da661 NB |
579 | } else { |
580 | j = 0; | |
581 | ||
c7b47447 | 582 | tfd = dev_open(dv->devname, O_RDONLY); |
5a9de8db N |
583 | if (tfd < 0 && dv->disposition == 'r' && |
584 | lstat(dv->devname, &stb) == 0) | |
585 | /* Be happy, the lstat worked, that is | |
586 | * enough for --remove | |
587 | */ | |
588 | ; | |
589 | else { | |
590 | if (tfd < 0 || fstat(tfd, &stb) != 0) { | |
e7b84f9d | 591 | pr_err("cannot find %s: %s\n", |
5a9de8db N |
592 | dv->devname, strerror(errno)); |
593 | if (tfd >= 0) | |
594 | close(tfd); | |
bcbb3112 | 595 | goto abort; |
5a9de8db N |
596 | } |
597 | close(tfd); | |
cfad27a9 | 598 | tfd = -1; |
b80da661 NB |
599 | } |
600 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
e7b84f9d | 601 | pr_err("%s is not a " |
b80da661 NB |
602 | "block device.\n", |
603 | dv->devname); | |
bcbb3112 | 604 | goto abort; |
b80da661 | 605 | } |
682c7051 | 606 | } |
cd29a5c8 | 607 | switch(dv->disposition){ |
682c7051 | 608 | default: |
e7b84f9d | 609 | pr_err("internal error - devmode[%s]=%d\n", |
c913b90e | 610 | dv->devname, dv->disposition); |
bcbb3112 | 611 | goto abort; |
682c7051 | 612 | case 'a': |
c8e1a230 | 613 | case 'A': |
4a39c6f2 | 614 | /* add the device */ |
4725bc31 | 615 | if (subarray) { |
e7b84f9d | 616 | pr_err("Cannot add disks to a" |
f7dd881f DW |
617 | " \'member\' array, perform this" |
618 | " operation on the parent container\n"); | |
bcbb3112 | 619 | goto abort; |
f94d52f4 | 620 | } |
f277ce36 | 621 | /* Make sure it isn't in use (in 2.6 or later) */ |
a4e13010 N |
622 | tfd = dev_open(add_dev, O_RDONLY|O_EXCL|O_DIRECT); |
623 | if (tfd < 0 && add_dev != dv->devname) | |
624 | continue; | |
0fbf459d | 625 | if (tfd < 0) { |
e7b84f9d | 626 | pr_err("Cannot open %s: %s\n", |
d7eaf49f | 627 | dv->devname, strerror(errno)); |
bcbb3112 | 628 | goto abort; |
d7eaf49f | 629 | } |
9f584691 N |
630 | if (!frozen) { |
631 | if (sysfs_freeze_array(&info) == 1) | |
632 | frozen = 1; | |
633 | else | |
634 | frozen = -1; | |
635 | } | |
3da92f27 | 636 | |
1686dc25 | 637 | st = dup_super(tst); |
3da92f27 | 638 | |
fe80f49b | 639 | if (array.not_persistent==0) |
3da92f27 NB |
640 | st->ss->load_super(st, tfd, NULL); |
641 | ||
a4e13010 N |
642 | if (add_dev == dv->devname) { |
643 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { | |
093d9187 | 644 | st->ss->free_super(st); |
a4e13010 | 645 | close(tfd); |
bcbb3112 | 646 | goto abort; |
a4e13010 N |
647 | } |
648 | } else if (!get_dev_size(tfd, NULL, &ldsize)) { | |
093d9187 | 649 | st->ss->free_super(st); |
4a39c6f2 | 650 | close(tfd); |
cfad27a9 | 651 | tfd = -1; |
a4e13010 | 652 | continue; |
4a39c6f2 | 653 | } |
f94d52f4 | 654 | |
11b391ec N |
655 | if (tst->ss->validate_geometry( |
656 | tst, array.level, array.layout, | |
657 | array.raid_disks, NULL, | |
658 | ldsize >> 9, NULL, NULL, 0) == 0) { | |
659 | if (!force) { | |
e7b84f9d N |
660 | pr_err("%s is larger than %s can " |
661 | "effectively use.\n" | |
662 | " Add --force is you " | |
663 | "really want to add this device.\n", | |
664 | add_dev, devname); | |
093d9187 | 665 | st->ss->free_super(st); |
11b391ec | 666 | close(tfd); |
bcbb3112 | 667 | goto abort; |
11b391ec | 668 | } |
e7b84f9d N |
669 | pr_err("%s is larger than %s can " |
670 | "effectively use.\n" | |
671 | " Adding anyway as --force " | |
672 | "was given.\n", | |
673 | add_dev, devname); | |
11b391ec | 674 | } |
f94d52f4 NB |
675 | if (!tst->ss->external && |
676 | array.major_version == 0 && | |
60d9a174 | 677 | md_get_version(fd)%100 < 2) { |
a4e13010 | 678 | close(tfd); |
093d9187 | 679 | st->ss->free_super(st); |
cfad27a9 | 680 | tfd = -1; |
892debc8 NB |
681 | if (ioctl(fd, HOT_ADD_DISK, |
682 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f | 683 | if (verbose >= 0) |
e7b84f9d | 684 | pr_err("hot added %s\n", |
a4e13010 | 685 | add_dev); |
892debc8 NB |
686 | continue; |
687 | } | |
688 | ||
e7b84f9d | 689 | pr_err("hot add failed for %s: %s\n", |
a4e13010 | 690 | add_dev, strerror(errno)); |
bcbb3112 | 691 | goto abort; |
cd29a5c8 | 692 | } |
892debc8 | 693 | |
43dad3d6 | 694 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 695 | |
fe80f49b | 696 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
697 | * a spare slot to use. |
698 | * For 'external' array (well, container based), | |
699 | * We can just load the metadata for the array. | |
fe80f49b | 700 | */ |
a4e13010 N |
701 | if (tst->sb) |
702 | /* already loaded */; | |
703 | else if (tst->ss->external) { | |
0fb69d1d | 704 | tst->ss->load_container(tst, fd, NULL); |
43dad3d6 | 705 | } else for (j = 0; j < tst->max_devs; j++) { |
fe80f49b NB |
706 | char *dev; |
707 | int dfd; | |
708 | disc.number = j; | |
709 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
710 | continue; | |
711 | if (disc.major==0 && disc.minor==0) | |
712 | continue; | |
713 | if ((disc.state & 4)==0) continue; /* sync */ | |
714 | /* Looks like a good device to try */ | |
16c6fa80 | 715 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 716 | if (!dev) continue; |
16c6fa80 | 717 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 718 | if (dfd < 0) continue; |
3da92f27 NB |
719 | if (tst->ss->load_super(tst, dfd, |
720 | NULL)) { | |
fe80f49b NB |
721 | close(dfd); |
722 | continue; | |
723 | } | |
892debc8 | 724 | close(dfd); |
fe80f49b NB |
725 | break; |
726 | } | |
43dad3d6 | 727 | /* FIXME this is a bad test to be using */ |
c8e1a230 | 728 | if (!tst->sb && dv->disposition == 'A') { |
c69ffac0 N |
729 | /* we are re-adding a device to a |
730 | * completely dead array - have to depend | |
731 | * on kernel to check | |
732 | */ | |
733 | } else if (!tst->sb) { | |
a4e13010 | 734 | close(tfd); |
093d9187 | 735 | st->ss->free_super(st); |
e7b84f9d | 736 | pr_err("cannot load array metadata from %s\n", devname); |
bcbb3112 | 737 | goto abort; |
fe80f49b | 738 | } |
2a528478 N |
739 | |
740 | /* Make sure device is large enough */ | |
741 | if (tst->ss->avail_size(tst, ldsize/512) < | |
742 | array_size) { | |
a4e13010 | 743 | close(tfd); |
cfad27a9 | 744 | tfd = -1; |
093d9187 | 745 | st->ss->free_super(st); |
a4e13010 N |
746 | if (add_dev != dv->devname) |
747 | continue; | |
e7b84f9d | 748 | pr_err("%s not large enough to join array\n", |
2a528478 | 749 | dv->devname); |
bcbb3112 | 750 | goto abort; |
2a528478 N |
751 | } |
752 | ||
fe80f49b NB |
753 | /* Possibly this device was recently part of the array |
754 | * and was temporarily removed, and is now being re-added. | |
755 | * If so, we can simply re-add it. | |
756 | */ | |
7eae7080 | 757 | |
873eec46 | 758 | if (st->sb) { |
8453e704 | 759 | struct mdinfo mdi; |
a5d85af7 | 760 | st->ss->getinfo_super(st, &mdi, NULL); |
3da92f27 | 761 | st->ss->uuid_from_super(st, ouuid); |
c69ffac0 N |
762 | if (tst->sb) |
763 | tst->ss->uuid_from_super(tst, duuid); | |
764 | else | |
765 | /* Assume uuid matches: kernel will check */ | |
766 | memcpy(duuid, ouuid, sizeof(ouuid)); | |
8453e704 N |
767 | if ((mdi.disk.state & (1<<MD_DISK_ACTIVE)) && |
768 | !(mdi.disk.state & (1<<MD_DISK_FAULTY)) && | |
769 | memcmp(duuid, ouuid, sizeof(ouuid))==0) { | |
770 | /* look like it is worth a try. Need to | |
771 | * make sure kernel will accept it though. | |
fe80f49b | 772 | */ |
873eec46 N |
773 | /* re-add doesn't work for version-1 superblocks |
774 | * before 2.6.18 :-( | |
775 | */ | |
776 | if (array.major_version == 1 && | |
777 | get_linux_version() <= 2006018) | |
778 | goto skip_re_add; | |
8453e704 N |
779 | disc.number = mdi.disk.number; |
780 | if (ioctl(fd, GET_DISK_INFO, &disc) != 0 | |
781 | || disc.major != 0 || disc.minor != 0 | |
c69ffac0 | 782 | ) |
8453e704 | 783 | goto skip_re_add; |
fe80f49b NB |
784 | disc.major = major(stb.st_rdev); |
785 | disc.minor = minor(stb.st_rdev); | |
786 | disc.number = mdi.disk.number; | |
787 | disc.raid_disk = mdi.disk.raid_disk; | |
788 | disc.state = mdi.disk.state; | |
b3d31955 | 789 | if (dv->writemostly == 1) |
4d20d744 | 790 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
791 | if (dv->writemostly == 2) |
792 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
a4e13010 N |
793 | remove_partitions(tfd); |
794 | close(tfd); | |
795 | tfd = -1; | |
16715c01 | 796 | if (update || dv->writemostly > 0) { |
833bb0f8 N |
797 | int rv = -1; |
798 | tfd = dev_open(dv->devname, O_RDWR); | |
16715c01 | 799 | if (tfd < 0) { |
e7b84f9d | 800 | pr_err("failed to open %s for" |
16715c01 | 801 | " superblock update during re-add\n", dv->devname); |
093d9187 | 802 | st->ss->free_super(st); |
bcbb3112 | 803 | goto abort; |
16715c01 | 804 | } |
833bb0f8 | 805 | |
16715c01 DL |
806 | if (dv->writemostly == 1) |
807 | rv = st->ss->update_super( | |
808 | st, NULL, "writemostly", | |
809 | devname, verbose, 0, NULL); | |
810 | if (dv->writemostly == 2) | |
811 | rv = st->ss->update_super( | |
812 | st, NULL, "readwrite", | |
813 | devname, verbose, 0, NULL); | |
814 | if (update) | |
833bb0f8 N |
815 | rv = st->ss->update_super( |
816 | st, NULL, update, | |
817 | devname, verbose, 0, NULL); | |
818 | if (rv == 0) | |
c0f8269d | 819 | rv = st->ss->store_super(st, tfd); |
833bb0f8 N |
820 | close(tfd); |
821 | tfd = -1; | |
822 | if (rv != 0) { | |
e7b84f9d N |
823 | pr_err("failed to update" |
824 | " superblock during re-add\n"); | |
093d9187 | 825 | st->ss->free_super(st); |
bcbb3112 | 826 | goto abort; |
833bb0f8 N |
827 | } |
828 | } | |
5c64fcb5 N |
829 | /* don't even try if disk is marked as faulty */ |
830 | errno = 0; | |
8453e704 | 831 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
fe80f49b | 832 | if (verbose >= 0) |
e7b84f9d | 833 | pr_err("re-added %s\n", add_dev); |
7d2e6486 | 834 | count++; |
093d9187 | 835 | st->ss->free_super(st); |
308e1801 | 836 | continue; |
fe80f49b | 837 | } |
c9f39c1b | 838 | if (errno == ENOMEM || errno == EROFS) { |
e7b84f9d | 839 | pr_err("add new device failed for %s: %s\n", |
a4e13010 | 840 | add_dev, strerror(errno)); |
093d9187 | 841 | st->ss->free_super(st); |
a4e13010 N |
842 | if (add_dev != dv->devname) |
843 | continue; | |
bcbb3112 | 844 | goto abort; |
c9f39c1b | 845 | } |
fe80f49b | 846 | } |
0a999759 | 847 | skip_re_add: |
1cc7f4fe | 848 | st->ss->free_super(st); |
892debc8 | 849 | } |
a4e13010 N |
850 | if (add_dev != dv->devname) { |
851 | if (verbose > 0) | |
e7b84f9d N |
852 | pr_err("--re-add for %s to %s is not possible\n", |
853 | add_dev, devname); | |
cfad27a9 | 854 | if (tfd >= 0) { |
a4e13010 | 855 | close(tfd); |
cfad27a9 DL |
856 | tfd = -1; |
857 | } | |
a4e13010 N |
858 | continue; |
859 | } | |
c8e1a230 | 860 | if (dv->disposition == 'A') { |
a4e13010 N |
861 | if (tfd >= 0) |
862 | close(tfd); | |
e7b84f9d N |
863 | pr_err("--re-add for %s to %s is not possible\n", |
864 | dv->devname, devname); | |
bcbb3112 | 865 | goto abort; |
751fd6c0 | 866 | } |
0a999759 | 867 | if (array.active_disks < array.raid_disks) { |
503975b9 | 868 | char *avail = xcalloc(array.raid_disks, 1); |
0a999759 N |
869 | int d; |
870 | int found = 0; | |
871 | ||
872 | for (d = 0; d < MAX_DISKS && found < array.active_disks; d++) { | |
873 | disc.number = d; | |
874 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
875 | continue; | |
876 | if (disc.major == 0 && disc.minor == 0) | |
877 | continue; | |
878 | if (!(disc.state & (1<<MD_DISK_SYNC))) | |
879 | continue; | |
880 | avail[disc.raid_disk] = 1; | |
881 | found++; | |
882 | } | |
883 | array_failed = !enough(array.level, array.raid_disks, | |
884 | array.layout, 1, avail); | |
885 | } else | |
886 | array_failed = 0; | |
887 | if (array_failed) { | |
e7b84f9d | 888 | pr_err("%s has failed so using --add cannot work and might destroy\n", |
0a999759 | 889 | devname); |
e7b84f9d | 890 | pr_err("data on %s. You should stop the array and re-assemble it.\n", |
8453e704 N |
891 | dv->devname); |
892 | if (tfd >= 0) | |
893 | close(tfd); | |
bcbb3112 | 894 | goto abort; |
8453e704 | 895 | } |
4a39c6f2 NB |
896 | } else { |
897 | /* non-persistent. Must ensure that new drive | |
898 | * is at least array.size big. | |
899 | */ | |
7a3be72f | 900 | if (ldsize/512 < array_size) { |
e7b84f9d | 901 | pr_err("%s not large enough to join array\n", |
4a39c6f2 | 902 | dv->devname); |
cfad27a9 DL |
903 | if (tfd >= 0) |
904 | close(tfd); | |
bcbb3112 | 905 | goto abort; |
4a39c6f2 | 906 | } |
892debc8 | 907 | } |
a4e13010 N |
908 | /* committed to really trying this device now*/ |
909 | if (tfd >= 0) { | |
910 | remove_partitions(tfd); | |
911 | close(tfd); | |
cfad27a9 | 912 | tfd = -1; |
a4e13010 | 913 | } |
7eae7080 NB |
914 | /* in 2.6.17 and earlier, version-1 superblocks won't |
915 | * use the number we write, but will choose a free number. | |
916 | * we must choose the same free number, which requires | |
917 | * starting at 'raid_disks' and counting up | |
918 | */ | |
3da92f27 | 919 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 920 | disc.number = j; |
682c7051 NB |
921 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
922 | break; | |
923 | if (disc.major==0 && disc.minor==0) | |
924 | break; | |
925 | if (disc.state & 8) /* removed */ | |
926 | break; | |
927 | } | |
0df46c2a NB |
928 | disc.major = major(stb.st_rdev); |
929 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
930 | disc.number =j; |
931 | disc.state = 0; | |
02c39ab1 | 932 | if (array.not_persistent==0) { |
111d01fc | 933 | int dfd; |
b3d31955 | 934 | if (dv->writemostly == 1) |
fe80f49b | 935 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
3b435195 | 936 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
f20c3968 DW |
937 | if (tst->ss->add_to_super(tst, &disc, dfd, |
938 | dv->devname)) { | |
f20c3968 | 939 | close(dfd); |
bcbb3112 | 940 | goto abort; |
f20c3968 | 941 | } |
1cc7f4fe N |
942 | if (tst->ss->write_init_super(tst)) { |
943 | close(dfd); | |
bcbb3112 | 944 | goto abort; |
1cc7f4fe | 945 | } |
c8e1a230 | 946 | } else if (dv->disposition == 'A') { |
fe80f49b NB |
947 | /* this had better be raid1. |
948 | * As we are "--re-add"ing we must find a spare slot | |
949 | * to fill. | |
950 | */ | |
503975b9 | 951 | char *used = xcalloc(array.raid_disks, 1); |
3da92f27 | 952 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
953 | mdu_disk_info_t disc2; |
954 | disc2.number = j; | |
955 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
956 | continue; | |
957 | if (disc2.major==0 && disc2.minor==0) | |
958 | continue; | |
959 | if (disc2.state & 8) /* removed */ | |
960 | continue; | |
961 | if (disc2.raid_disk < 0) | |
962 | continue; | |
963 | if (disc2.raid_disk > array.raid_disks) | |
964 | continue; | |
965 | used[disc2.raid_disk] = 1; | |
966 | } | |
967 | for (j=0 ; j<array.raid_disks; j++) | |
968 | if (!used[j]) { | |
969 | disc.raid_disk = j; | |
970 | disc.state |= (1<<MD_DISK_SYNC); | |
971 | break; | |
972 | } | |
0eb26465 | 973 | free(used); |
fe80f49b | 974 | } |
b3d31955 | 975 | if (dv->writemostly == 1) |
d8def61c | 976 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 | 977 | if (tst->ss->external) { |
73cb8d43 AK |
978 | /* add a disk |
979 | * to an external metadata container */ | |
43dad3d6 DW |
980 | struct mdinfo new_mdi; |
981 | struct mdinfo *sra; | |
982 | int container_fd; | |
983 | int devnum = fd2devnum(fd); | |
02c39ab1 | 984 | int dfd; |
43dad3d6 DW |
985 | |
986 | container_fd = open_dev_excl(devnum); | |
987 | if (container_fd < 0) { | |
e7b84f9d N |
988 | pr_err("add failed for %s:" |
989 | " could not get exclusive access to container\n", | |
990 | dv->devname); | |
562e70e4 | 991 | tst->ss->free_super(tst); |
bcbb3112 | 992 | goto abort; |
43dad3d6 DW |
993 | } |
994 | ||
02c39ab1 | 995 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
d6221e66 N |
996 | if (mdmon_running(tst->container_dev)) |
997 | tst->update_tail = &tst->updates; | |
02c39ab1 N |
998 | if (tst->ss->add_to_super(tst, &disc, dfd, |
999 | dv->devname)) { | |
1000 | close(dfd); | |
1001 | close(container_fd); | |
bcbb3112 | 1002 | goto abort; |
02c39ab1 | 1003 | } |
c0f8269d AK |
1004 | if (tst->update_tail) |
1005 | flush_metadata_updates(tst); | |
d6221e66 | 1006 | else |
c0f8269d | 1007 | tst->ss->sync_metadata(tst); |
02c39ab1 | 1008 | |
43dad3d6 DW |
1009 | sra = sysfs_read(container_fd, -1, 0); |
1010 | if (!sra) { | |
e7b84f9d | 1011 | pr_err("add failed for %s: sysfs_read failed\n", |
43dad3d6 DW |
1012 | dv->devname); |
1013 | close(container_fd); | |
562e70e4 | 1014 | tst->ss->free_super(tst); |
bcbb3112 | 1015 | goto abort; |
43dad3d6 DW |
1016 | } |
1017 | sra->array.level = LEVEL_CONTAINER; | |
1018 | /* Need to set data_offset and component_size */ | |
a5d85af7 | 1019 | tst->ss->getinfo_super(tst, &new_mdi, NULL); |
43dad3d6 DW |
1020 | new_mdi.disk.major = disc.major; |
1021 | new_mdi.disk.minor = disc.minor; | |
d23534e4 | 1022 | new_mdi.recovery_start = 0; |
1cc7f4fe N |
1023 | /* Make sure fds are closed as they are O_EXCL which |
1024 | * would block add_disk */ | |
1025 | tst->ss->free_super(tst); | |
462906cd | 1026 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { |
e7b84f9d | 1027 | pr_err("add new device to external metadata" |
43dad3d6 DW |
1028 | " failed for %s\n", dv->devname); |
1029 | close(container_fd); | |
73cb8d43 | 1030 | sysfs_free(sra); |
bcbb3112 | 1031 | goto abort; |
43dad3d6 | 1032 | } |
983fff45 | 1033 | ping_monitor_by_id(devnum); |
43dad3d6 DW |
1034 | sysfs_free(sra); |
1035 | close(container_fd); | |
562e70e4 N |
1036 | } else { |
1037 | tst->ss->free_super(tst); | |
1038 | if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
e7b84f9d | 1039 | pr_err("add new device failed for %s as %d: %s\n", |
562e70e4 | 1040 | dv->devname, j, strerror(errno)); |
bcbb3112 | 1041 | goto abort; |
562e70e4 | 1042 | } |
682c7051 | 1043 | } |
dab6685f | 1044 | if (verbose >= 0) |
e7b84f9d | 1045 | pr_err("added %s\n", dv->devname); |
682c7051 NB |
1046 | break; |
1047 | ||
1048 | case 'r': | |
1049 | /* hot remove */ | |
4725bc31 | 1050 | if (subarray) { |
e7b84f9d | 1051 | pr_err("Cannot remove disks from a" |
f7dd881f DW |
1052 | " \'member\' array, perform this" |
1053 | " operation on the parent container\n"); | |
98d27e39 N |
1054 | if (sysfd >= 0) |
1055 | close(sysfd); | |
bcbb3112 | 1056 | goto abort; |
f94d52f4 NB |
1057 | } |
1058 | if (tst->ss->external) { | |
1059 | /* To remove a device from a container, we must | |
1060 | * check that it isn't in use in an array. | |
1061 | * This involves looking in the 'holders' | |
1062 | * directory - there must be just one entry, | |
1063 | * the container. | |
1064 | * To ensure that it doesn't get used as a | |
1065 | * hold spare while we are checking, we | |
1066 | * get an O_EXCL open on the container | |
1067 | */ | |
1068 | int dnum = fd2devnum(fd); | |
1069 | lfd = open_dev_excl(dnum); | |
1070 | if (lfd < 0) { | |
e7b84f9d N |
1071 | pr_err("Cannot get exclusive access " |
1072 | " to container - odd\n"); | |
98d27e39 N |
1073 | if (sysfd >= 0) |
1074 | close(sysfd); | |
bcbb3112 | 1075 | goto abort; |
f94d52f4 | 1076 | } |
85f9b5f7 DW |
1077 | /* in the detached case it is not possible to |
1078 | * check if we are the unique holder, so just | |
1079 | * rely on the 'detached' checks | |
1080 | */ | |
1081 | if (strcmp(dv->devname, "detached") == 0 || | |
98d27e39 | 1082 | sysfd >= 0 || |
85f9b5f7 DW |
1083 | sysfs_unique_holder(dnum, stb.st_rdev)) |
1084 | /* pass */; | |
1085 | else { | |
e7b84f9d N |
1086 | pr_err("%s is %s, cannot remove.\n", |
1087 | dnprintable, | |
1088 | errno == EEXIST ? "still in use": | |
1089 | "not a member"); | |
f94d52f4 | 1090 | close(lfd); |
bcbb3112 | 1091 | goto abort; |
f94d52f4 NB |
1092 | } |
1093 | } | |
82b27616 | 1094 | /* FIXME check that it is a current member */ |
98d27e39 N |
1095 | if (sysfd >= 0) { |
1096 | /* device has been removed and we don't know | |
1097 | * the major:minor number | |
1098 | */ | |
1099 | int n = write(sysfd, "remove", 6); | |
1100 | if (n != 6) | |
f94d52f4 | 1101 | err = -1; |
98d27e39 N |
1102 | else |
1103 | err = 0; | |
1104 | close(sysfd); | |
1105 | sysfd = -1; | |
1106 | } else { | |
1107 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); | |
1108 | if (err && errno == ENODEV) { | |
1109 | /* Old kernels rejected this if no personality | |
1110 | * registered */ | |
1111 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
1112 | struct mdinfo *dv = NULL; | |
1113 | if (sra) | |
1114 | dv = sra->devs; | |
1115 | for ( ; dv ; dv=dv->next) | |
f21e18ca N |
1116 | if (dv->disk.major == (int)major(stb.st_rdev) && |
1117 | dv->disk.minor == (int)minor(stb.st_rdev)) | |
98d27e39 N |
1118 | break; |
1119 | if (dv) | |
1120 | err = sysfs_set_str(sra, dv, | |
1121 | "state", "remove"); | |
1122 | else | |
1123 | err = -1; | |
1124 | if (sra) | |
1125 | sysfs_free(sra); | |
1126 | } | |
f94d52f4 NB |
1127 | } |
1128 | if (err) { | |
e7b84f9d N |
1129 | pr_err("hot remove failed " |
1130 | "for %s: %s\n", dnprintable, | |
1131 | strerror(errno)); | |
f94d52f4 NB |
1132 | if (lfd >= 0) |
1133 | close(lfd); | |
bcbb3112 | 1134 | goto abort; |
682c7051 | 1135 | } |
313a4a82 DW |
1136 | if (tst->ss->external) { |
1137 | /* | |
1138 | * Before dropping our exclusive open we make an | |
1139 | * attempt at preventing mdmon from seeing an | |
1140 | * 'add' event before reconciling this 'remove' | |
1141 | * event. | |
1142 | */ | |
1143 | char *name = devnum2devname(fd2devnum(fd)); | |
1144 | ||
1145 | if (!name) { | |
e7b84f9d | 1146 | pr_err("unable to get container name\n"); |
bcbb3112 | 1147 | goto abort; |
313a4a82 DW |
1148 | } |
1149 | ||
1150 | ping_manager(name); | |
1151 | free(name); | |
1152 | } | |
98d27e39 N |
1153 | if (lfd >= 0) |
1154 | close(lfd); | |
7d2e6486 | 1155 | count++; |
dab6685f | 1156 | if (verbose >= 0) |
e7b84f9d | 1157 | pr_err("hot removed %s from %s\n", |
29ba4804 | 1158 | dnprintable, devname); |
682c7051 NB |
1159 | break; |
1160 | ||
1161 | case 'f': /* set faulty */ | |
1162 | /* FIXME check current member */ | |
98d27e39 N |
1163 | if ((sysfd >= 0 && write(sysfd, "faulty", 6) != 6) || |
1164 | (sysfd < 0 && ioctl(fd, SET_DISK_FAULTY, | |
1165 | (unsigned long) stb.st_rdev))) { | |
e7b84f9d | 1166 | pr_err("set device faulty failed for %s: %s\n", |
b80da661 | 1167 | dnprintable, strerror(errno)); |
98d27e39 N |
1168 | if (sysfd >= 0) |
1169 | close(sysfd); | |
bcbb3112 | 1170 | goto abort; |
682c7051 | 1171 | } |
98d27e39 N |
1172 | if (sysfd >= 0) |
1173 | close(sysfd); | |
1174 | sysfd = -1; | |
7d2e6486 | 1175 | count++; |
dab6685f | 1176 | if (verbose >= 0) |
e7b84f9d | 1177 | pr_err("set %s faulty in %s\n", |
b80da661 | 1178 | dnprintable, devname); |
682c7051 NB |
1179 | break; |
1180 | } | |
1181 | } | |
9f584691 N |
1182 | if (frozen > 0) |
1183 | sysfs_set_str(&info, NULL, "sync_action","idle"); | |
7d2e6486 N |
1184 | if (test && count == 0) |
1185 | return 2; | |
682c7051 | 1186 | return 0; |
bcbb3112 N |
1187 | |
1188 | abort: | |
9f584691 N |
1189 | if (frozen > 0) |
1190 | sysfs_set_str(&info, NULL, "sync_action","idle"); | |
bcbb3112 | 1191 | return 1; |
64c4757e | 1192 | } |
1f48664b NB |
1193 | |
1194 | int autodetect(void) | |
1195 | { | |
1196 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
1197 | int rv = 1; | |
1198 | int fd = dev_open("9:0", O_RDONLY); | |
1199 | if (fd >= 0) { | |
1200 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
1201 | rv = 0; | |
1202 | close(fd); | |
1203 | } | |
1204 | return rv; | |
1205 | } | |
aa534678 | 1206 | |
fa56eddb | 1207 | int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident *ident, int quiet) |
aa534678 DW |
1208 | { |
1209 | struct supertype supertype, *st = &supertype; | |
1210 | int fd, rv = 2; | |
1211 | ||
1212 | memset(st, 0, sizeof(*st)); | |
aa534678 | 1213 | |
feab51f8 | 1214 | fd = open_subarray(dev, subarray, st, quiet); |
aa534678 DW |
1215 | if (fd < 0) |
1216 | return 2; | |
1217 | ||
1218 | if (!st->ss->update_subarray) { | |
1219 | if (!quiet) | |
e7b84f9d N |
1220 | pr_err("Operation not supported for %s metadata\n", |
1221 | st->ss->name); | |
aa534678 DW |
1222 | goto free_super; |
1223 | } | |
1224 | ||
1225 | if (mdmon_running(st->devnum)) | |
1226 | st->update_tail = &st->updates; | |
1227 | ||
a951a4f7 | 1228 | rv = st->ss->update_subarray(st, subarray, update, ident); |
aa534678 DW |
1229 | |
1230 | if (rv) { | |
1231 | if (!quiet) | |
e7b84f9d | 1232 | pr_err("Failed to update %s of subarray-%s in %s\n", |
aa534678 DW |
1233 | update, subarray, dev); |
1234 | } else if (st->update_tail) | |
1235 | flush_metadata_updates(st); | |
1236 | else | |
1237 | st->ss->sync_metadata(st); | |
1238 | ||
1239 | if (rv == 0 && strcmp(update, "name") == 0 && !quiet) | |
e7b84f9d N |
1240 | pr_err("Updated subarray-%s name from %s, UUIDs may have changed\n", |
1241 | subarray, dev); | |
aa534678 DW |
1242 | |
1243 | free_super: | |
1244 | st->ss->free_super(st); | |
1245 | close(fd); | |
1246 | ||
1247 | return rv; | |
1248 | } | |
d52bb542 AC |
1249 | |
1250 | /* Move spare from one array to another | |
1251 | * If adding to destination array fails | |
1252 | * add back to original array | |
1253 | * Returns 1 on success, 0 on failure */ | |
1254 | int move_spare(char *from_devname, char *to_devname, dev_t devid) | |
1255 | { | |
1256 | struct mddev_dev devlist; | |
1257 | char devname[20]; | |
1258 | ||
1259 | /* try to remove and add */ | |
1260 | int fd1 = open(to_devname, O_RDONLY); | |
1261 | int fd2 = open(from_devname, O_RDONLY); | |
1262 | ||
1263 | if (fd1 < 0 || fd2 < 0) { | |
1264 | if (fd1>=0) close(fd1); | |
1265 | if (fd2>=0) close(fd2); | |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | devlist.next = NULL; | |
1270 | devlist.used = 0; | |
d52bb542 AC |
1271 | devlist.writemostly = 0; |
1272 | devlist.devname = devname; | |
1273 | sprintf(devname, "%d:%d", major(devid), minor(devid)); | |
1274 | ||
1275 | devlist.disposition = 'r'; | |
11b391ec | 1276 | if (Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 | 1277 | devlist.disposition = 'a'; |
11b391ec | 1278 | if (Manage_subdevs(to_devname, fd1, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 AC |
1279 | /* make sure manager is aware of changes */ |
1280 | ping_manager(to_devname); | |
1281 | ping_manager(from_devname); | |
1282 | close(fd1); | |
1283 | close(fd2); | |
1284 | return 1; | |
1285 | } | |
11b391ec | 1286 | else Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0); |
d52bb542 AC |
1287 | } |
1288 | close(fd1); | |
1289 | close(fd2); | |
1290 | return 0; | |
1291 | } | |
435d4ebb | 1292 | #endif |