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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 | * |
7bd04da9 | 4 | * Copyright (C) 2001-2012 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 |
7bd04da9 | 54 | /* If this is an externally-managed array, we need to modify the |
e9dd1598 N |
55 | * metadata_version so that mdmon doesn't undo our change. |
56 | */ | |
4dd2df09 | 57 | mdi = sysfs_read(fd, NULL, GET_LEVEL|GET_VERSION); |
e9dd1598 N |
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 | |
7bd04da9 | 105 | if (readonly > 0) { |
682c7051 | 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 | ||
4dd2df09 | 130 | static void remove_devices(char *devnm, char *path) |
4ccad7b1 | 131 | { |
7bd04da9 | 132 | /* |
b1702f48 N |
133 | * Remove names at 'path' - possibly with |
134 | * partition suffixes - which link to the 'standard' | |
4dd2df09 | 135 | * name for devnm. These were probably created |
b1702f48 | 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 | ||
4dd2df09 | 149 | sprintf(base, "/dev/%s", devnm); |
4ccad7b1 | 150 | be = base + strlen(base); |
b1702f48 | 151 | |
503975b9 | 152 | path2 = xmalloc(strlen(path)+20); |
b1702f48 N |
153 | strcpy(path2, path); |
154 | pe = path2 + strlen(path2); | |
7bd04da9 | 155 | |
4ccad7b1 N |
156 | for (part = 0; part < 16; part++) { |
157 | if (part) { | |
158 | sprintf(be, "p%d", part); | |
b1702f48 N |
159 | |
160 | if (isdigit(pe[-1])) | |
161 | sprintf(pe, "p%d", part); | |
162 | else | |
163 | sprintf(pe, "%d", part); | |
4ccad7b1 | 164 | } |
b1702f48 | 165 | n = readlink(path2, link, sizeof(link)); |
d9ca03e9 | 166 | if (n > 0 && (int)strlen(base) == n && |
b1702f48 N |
167 | strncmp(link, base, n) == 0) |
168 | unlink(path2); | |
4ccad7b1 | 169 | } |
0eb26465 | 170 | free(path2); |
4ccad7b1 | 171 | } |
4ccad7b1 | 172 | |
ba728be7 N |
173 | int Manage_runstop(char *devname, int fd, int runstop, |
174 | int verbose, int will_retry) | |
64c4757e | 175 | { |
7bd04da9 | 176 | /* Run or stop the array. Array must already be configured |
ba728be7 N |
177 | * 'Run' requires >= 0.90.0 |
178 | * 'will_retry' is only relevant for 'stop', and means | |
179 | * that error messages are not wanted. | |
682c7051 | 180 | */ |
682c7051 | 181 | mdu_param_t param; /* unused */ |
bccd8153 | 182 | int rv = 0; |
82b27616 | 183 | |
ba728be7 N |
184 | if (will_retry && verbose == 0) |
185 | verbose = -1; | |
186 | ||
82b27616 | 187 | if (runstop == -1 && md_get_version(fd) < 9000) { |
7bd04da9 N |
188 | if (ioctl(fd, STOP_MD, 0) == 0) |
189 | return 0; | |
190 | pr_err("stopping device %s " | |
191 | "failed: %s\n", | |
192 | devname, strerror(errno)); | |
193 | return 1; | |
82b27616 | 194 | } |
aba69144 | 195 | |
682c7051 | 196 | if (md_get_version(fd) < 9000) { |
e7b84f9d | 197 | pr_err("need md driver version 0.90.0 or later\n"); |
682c7051 NB |
198 | return 1; |
199 | } | |
ba728be7 | 200 | |
7bd04da9 | 201 | if (runstop > 0) { |
682c7051 | 202 | if (ioctl(fd, RUN_ARRAY, ¶m)) { |
ba728be7 N |
203 | if (verbose >= 0) |
204 | pr_err("failed to run array %s: %s\n", | |
205 | devname, strerror(errno)); | |
682c7051 NB |
206 | return 1; |
207 | } | |
ba728be7 | 208 | if (verbose >= 0) |
e7b84f9d | 209 | pr_err("started %s\n", devname); |
682c7051 | 210 | } else if (runstop < 0){ |
8382f19b NB |
211 | struct map_ent *map = NULL; |
212 | struct stat stb; | |
daf7a3ce | 213 | struct mdinfo *mdi; |
4dd2df09 | 214 | char devnm[32]; |
2fdf559d | 215 | char container[32]; |
eb0af526 N |
216 | int err; |
217 | int count; | |
daf7a3ce NB |
218 | /* If this is an mdmon managed array, just write 'inactive' |
219 | * to the array state and let mdmon clear up. | |
220 | */ | |
4dd2df09 | 221 | strcpy(devnm, fd2devnm(fd)); |
eb0af526 N |
222 | /* Get EXCL access first. If this fails, then attempting |
223 | * to stop is probably a bad idea. | |
224 | */ | |
2fdf559d N |
225 | mdi = sysfs_read(fd, NULL, GET_LEVEL|GET_VERSION); |
226 | if (mdi && is_subarray(mdi->text_version)) { | |
227 | char *sl; | |
228 | strncpy(container, mdi->text_version+1, sizeof(container)); | |
229 | container[sizeof(container)-1] = 0; | |
230 | sl = strchr(container, '/'); | |
231 | if (sl) | |
232 | *sl = 0; | |
233 | } else | |
234 | container[0] = 0; | |
eb0af526 | 235 | close(fd); |
2fdf559d N |
236 | count = 5; |
237 | while (((fd = ((devnm[0] == '/') | |
238 | ?open(devname, O_RDONLY|O_EXCL) | |
239 | :open_dev_flags(devnm, O_RDONLY|O_EXCL))) < 0 | |
240 | || strcmp(fd2devnm(fd), devnm) != 0) | |
241 | && container[0] | |
242 | && mdmon_running(container) | |
243 | && count) { | |
244 | if (fd >= 0) | |
245 | close(fd); | |
246 | flush_mdmon(container); | |
247 | count--; | |
248 | } | |
4dd2df09 | 249 | if (fd < 0 || strcmp(fd2devnm(fd), devnm) != 0) { |
eb0af526 N |
250 | if (fd >= 0) |
251 | close(fd); | |
ba728be7 N |
252 | if (verbose >= 0) |
253 | pr_err("Cannot get exclusive access to %s:" | |
254 | "Perhaps a running " | |
255 | "process, mounted filesystem " | |
256 | "or active volume group?\n", | |
257 | devname); | |
eb0af526 N |
258 | return 1; |
259 | } | |
daf7a3ce NB |
260 | if (mdi && |
261 | mdi->array.level > 0 && | |
3c558363 | 262 | is_subarray(mdi->text_version)) { |
1ae42d9d | 263 | int err; |
daf7a3ce NB |
264 | /* This is mdmon managed. */ |
265 | close(fd); | |
1ae42d9d | 266 | |
7bd04da9 N |
267 | /* As we have an O_EXCL open, any use of the device |
268 | * which blocks STOP_ARRAY is probably a transient use, | |
269 | * so it is reasonable to retry for a while - 5 seconds. | |
270 | */ | |
1ae42d9d KW |
271 | count = 25; |
272 | while (count && | |
273 | (err = sysfs_set_str(mdi, NULL, | |
274 | "array_state", | |
275 | "inactive")) < 0 | |
276 | && errno == EBUSY) { | |
277 | usleep(200000); | |
278 | count--; | |
279 | } | |
ba728be7 N |
280 | if (err) { |
281 | if (verbose >= 0) | |
282 | pr_err("failed to stop array %s: %s\n", | |
283 | devname, strerror(errno)); | |
bccd8153 JS |
284 | rv = 1; |
285 | goto out; | |
daf7a3ce NB |
286 | } |
287 | ||
288 | /* Give monitor a chance to act */ | |
c94709e8 | 289 | ping_monitor(mdi->text_version); |
daf7a3ce | 290 | |
4dd2df09 | 291 | fd = open_dev_excl(devnm); |
eb0af526 | 292 | if (fd < 0) { |
ba728be7 N |
293 | if (verbose >= 0) |
294 | pr_err("failed to completely stop %s" | |
295 | ": Device is busy\n", | |
296 | devname); | |
bccd8153 JS |
297 | rv = 1; |
298 | goto out; | |
eb0af526 | 299 | } |
ada6c239 N |
300 | } else if (mdi && |
301 | mdi->array.major_version == -1 && | |
302 | mdi->array.minor_version == -2 && | |
3c558363 | 303 | !is_subarray(mdi->text_version)) { |
430ea469 | 304 | struct mdstat_ent *mds, *m; |
ada6c239 N |
305 | /* container, possibly mdmon-managed. |
306 | * Make sure mdmon isn't opening it, which | |
307 | * would interfere with the 'stop' | |
308 | */ | |
309 | ping_monitor(mdi->sys_name); | |
430ea469 N |
310 | |
311 | /* now check that there are no existing arrays | |
312 | * which are members of this array | |
313 | */ | |
314 | mds = mdstat_read(0, 0); | |
7bd04da9 | 315 | for (m = mds; m; m = m->next) |
430ea469 N |
316 | if (m->metadata_version && |
317 | strncmp(m->metadata_version, "external:", 9)==0 && | |
4dd2df09 N |
318 | metadata_container_matches(m->metadata_version+9, |
319 | devnm)) { | |
ba728be7 | 320 | if (verbose >= 0) |
e7b84f9d N |
321 | pr_err("Cannot stop container %s: " |
322 | "member %s still active\n", | |
323 | devname, m->dev); | |
430ea469 | 324 | free_mdstat(mds); |
bccd8153 JS |
325 | rv = 1; |
326 | goto out; | |
430ea469 | 327 | } |
daf7a3ce | 328 | } |
daf7a3ce | 329 | |
eb0af526 N |
330 | /* As we have an O_EXCL open, any use of the device |
331 | * which blocks STOP_ARRAY is probably a transient use, | |
332 | * so it is reasonable to retry for a while - 5 seconds. | |
333 | */ | |
fb0d4b9c | 334 | count = 25; err = 0; |
eb0af526 N |
335 | while (count && fd >= 0 |
336 | && (err = ioctl(fd, STOP_ARRAY, NULL)) < 0 | |
337 | && errno == EBUSY) { | |
338 | usleep(200000); | |
339 | count --; | |
340 | } | |
341 | if (fd >= 0 && err) { | |
ba728be7 | 342 | if (verbose >= 0) { |
e7b84f9d N |
343 | pr_err("failed to stop array %s: %s\n", |
344 | devname, strerror(errno)); | |
d927f3c4 NB |
345 | if (errno == EBUSY) |
346 | fprintf(stderr, "Perhaps a running " | |
347 | "process, mounted filesystem " | |
348 | "or active volume group?\n"); | |
349 | } | |
bccd8153 JS |
350 | rv = 1; |
351 | goto out; | |
682c7051 | 352 | } |
97590376 | 353 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array |
d49410d3 N |
354 | * was stopped, so We'll do it here just to be sure. Drop any |
355 | * partitions as well... | |
97590376 | 356 | */ |
d49410d3 N |
357 | if (fd >= 0) |
358 | ioctl(fd, BLKRRPART, 0); | |
97590376 N |
359 | if (mdi) |
360 | sysfs_uevent(mdi, "change"); | |
daf7a3ce | 361 | |
4dd2df09 | 362 | if (devnm[0] && |
4ccad7b1 N |
363 | (stat("/dev/.udev", &stb) != 0 || |
364 | check_env("MDADM_NO_UDEV"))) { | |
4dd2df09 N |
365 | struct map_ent *mp = map_by_devnm(&map, devnm); |
366 | remove_devices(devnm, mp ? mp->path : NULL); | |
4ccad7b1 N |
367 | } |
368 | ||
ba728be7 | 369 | if (verbose >= 0) |
e7b84f9d | 370 | pr_err("stopped %s\n", devname); |
4eb26970 | 371 | map_lock(&map); |
4dd2df09 | 372 | map_remove(&map, devnm); |
4eb26970 | 373 | map_unlock(&map); |
bccd8153 JS |
374 | out: |
375 | if (mdi) | |
376 | sysfs_free(mdi); | |
682c7051 | 377 | } |
bccd8153 | 378 | return rv; |
64c4757e NB |
379 | } |
380 | ||
5e73b024 N |
381 | static struct mddev_dev *add_one(struct mddev_dev *dv, char *name, char disp) |
382 | { | |
383 | struct mddev_dev *new; | |
384 | new = xmalloc(sizeof(*new)); | |
385 | memset(new, 0, sizeof(*new)); | |
386 | new->devname = xstrdup(name); | |
387 | new->disposition = disp; | |
388 | new->next = dv->next; | |
389 | dv->next = new; | |
390 | return new; | |
391 | } | |
392 | ||
1d997643 N |
393 | static void add_faulty(struct mddev_dev *dv, int fd, char disp) |
394 | { | |
395 | mdu_array_info_t array; | |
396 | mdu_disk_info_t disk; | |
397 | int remaining_disks; | |
398 | int i; | |
399 | ||
400 | if (ioctl(fd, GET_ARRAY_INFO, &array) != 0) | |
401 | return; | |
402 | ||
403 | remaining_disks = array.nr_disks; | |
404 | for (i = 0; i < MAX_DISKS && remaining_disks > 0; i++) { | |
1d997643 N |
405 | char buf[40]; |
406 | disk.number = i; | |
407 | if (ioctl(fd, GET_DISK_INFO, &disk) != 0) | |
408 | continue; | |
409 | if (disk.major == 0 && disk.minor == 0) | |
410 | continue; | |
411 | remaining_disks--; | |
412 | if ((disk.state & 1) == 0) /* not faulty */ | |
413 | continue; | |
414 | sprintf(buf, "%d:%d", disk.major, disk.minor); | |
5e73b024 | 415 | dv = add_one(dv, buf, disp); |
1d997643 N |
416 | } |
417 | } | |
418 | ||
419 | static void add_detached(struct mddev_dev *dv, int fd, char disp) | |
420 | { | |
421 | mdu_array_info_t array; | |
422 | mdu_disk_info_t disk; | |
423 | int remaining_disks; | |
424 | int i; | |
425 | ||
426 | if (ioctl(fd, GET_ARRAY_INFO, &array) != 0) | |
427 | return; | |
428 | ||
429 | remaining_disks = array.nr_disks; | |
430 | for (i = 0; i < MAX_DISKS && remaining_disks > 0; i++) { | |
1d997643 N |
431 | char buf[40]; |
432 | int sfd; | |
433 | disk.number = i; | |
434 | if (ioctl(fd, GET_DISK_INFO, &disk) != 0) | |
435 | continue; | |
436 | if (disk.major == 0 && disk.minor == 0) | |
437 | continue; | |
438 | remaining_disks--; | |
439 | if (disp == 'f' && (disk.state & 1) != 0) /* already faulty */ | |
440 | continue; | |
441 | sprintf(buf, "%d:%d", disk.major, disk.minor); | |
442 | sfd = dev_open(buf, O_RDONLY); | |
443 | if (sfd >= 0) { | |
444 | /* Not detached */ | |
445 | close(sfd); | |
446 | continue; | |
447 | } | |
448 | if (errno != ENXIO) | |
449 | /* Probably not detached */ | |
450 | continue; | |
5e73b024 | 451 | dv = add_one(dv, buf, disp); |
1d997643 N |
452 | } |
453 | } | |
454 | ||
abe94694 N |
455 | int attempt_re_add(int fd, int tfd, struct mddev_dev *dv, |
456 | struct supertype *dev_st, struct supertype *tst, | |
457 | unsigned long rdev, | |
458 | char *update, char *devname, int verbose, | |
459 | mdu_array_info_t *array) | |
460 | { | |
461 | struct mdinfo mdi; | |
462 | int duuid[4]; | |
463 | int ouuid[4]; | |
464 | ||
465 | dev_st->ss->getinfo_super(dev_st, &mdi, NULL); | |
466 | dev_st->ss->uuid_from_super(dev_st, ouuid); | |
467 | if (tst->sb) | |
468 | tst->ss->uuid_from_super(tst, duuid); | |
469 | else | |
470 | /* Assume uuid matches: kernel will check */ | |
471 | memcpy(duuid, ouuid, sizeof(ouuid)); | |
472 | if ((mdi.disk.state & (1<<MD_DISK_ACTIVE)) && | |
473 | !(mdi.disk.state & (1<<MD_DISK_FAULTY)) && | |
474 | memcmp(duuid, ouuid, sizeof(ouuid))==0) { | |
475 | /* Looks like it is worth a | |
476 | * try. Need to make sure | |
477 | * kernel will accept it | |
478 | * though. | |
479 | */ | |
480 | mdu_disk_info_t disc; | |
481 | /* re-add doesn't work for version-1 superblocks | |
482 | * before 2.6.18 :-( | |
483 | */ | |
484 | if (array->major_version == 1 && | |
485 | get_linux_version() <= 2006018) | |
486 | goto skip_re_add; | |
487 | disc.number = mdi.disk.number; | |
488 | if (ioctl(fd, GET_DISK_INFO, &disc) != 0 | |
489 | || disc.major != 0 || disc.minor != 0 | |
490 | ) | |
491 | goto skip_re_add; | |
492 | disc.major = major(rdev); | |
493 | disc.minor = minor(rdev); | |
494 | disc.number = mdi.disk.number; | |
495 | disc.raid_disk = mdi.disk.raid_disk; | |
496 | disc.state = mdi.disk.state; | |
497 | if (dv->writemostly == 1) | |
498 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; | |
499 | if (dv->writemostly == 2) | |
500 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
501 | remove_partitions(tfd); | |
502 | if (update || dv->writemostly > 0) { | |
503 | int rv = -1; | |
504 | tfd = dev_open(dv->devname, O_RDWR); | |
505 | if (tfd < 0) { | |
506 | pr_err("failed to open %s for" | |
507 | " superblock update during re-add\n", dv->devname); | |
508 | return -1; | |
509 | } | |
510 | ||
511 | if (dv->writemostly == 1) | |
512 | rv = dev_st->ss->update_super( | |
513 | dev_st, NULL, "writemostly", | |
514 | devname, verbose, 0, NULL); | |
515 | if (dv->writemostly == 2) | |
516 | rv = dev_st->ss->update_super( | |
517 | dev_st, NULL, "readwrite", | |
518 | devname, verbose, 0, NULL); | |
519 | if (update) | |
520 | rv = dev_st->ss->update_super( | |
521 | dev_st, NULL, update, | |
522 | devname, verbose, 0, NULL); | |
523 | if (rv == 0) | |
524 | rv = dev_st->ss->store_super(dev_st, tfd); | |
525 | close(tfd); | |
526 | if (rv != 0) { | |
527 | pr_err("failed to update" | |
528 | " superblock during re-add\n"); | |
529 | return -1; | |
530 | } | |
531 | } | |
532 | /* don't even try if disk is marked as faulty */ | |
533 | errno = 0; | |
534 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { | |
535 | if (verbose >= 0) | |
536 | pr_err("re-added %s\n", dv->devname); | |
537 | return 1; | |
538 | } | |
539 | if (errno == ENOMEM || errno == EROFS) { | |
540 | pr_err("add new device failed for %s: %s\n", | |
541 | dv->devname, strerror(errno)); | |
542 | if (dv->disposition == 'M') | |
543 | return 0; | |
544 | return -1; | |
545 | } | |
546 | } | |
547 | skip_re_add: | |
548 | return 0; | |
549 | } | |
550 | ||
38aeaf3a N |
551 | int Manage_add(int fd, int tfd, struct mddev_dev *dv, |
552 | struct supertype *tst, mdu_array_info_t *array, | |
553 | int force, int verbose, char *devname, | |
554 | char *update, unsigned long rdev, unsigned long long array_size) | |
555 | { | |
556 | unsigned long long ldsize; | |
6d43efb5 | 557 | struct supertype *dev_st = NULL; |
38aeaf3a N |
558 | int j; |
559 | mdu_disk_info_t disc; | |
560 | ||
561 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { | |
562 | if (dv->disposition == 'M') | |
563 | return 0; | |
564 | else | |
565 | return -1; | |
566 | } | |
567 | ||
568 | if (tst->ss->validate_geometry( | |
569 | tst, array->level, array->layout, | |
570 | array->raid_disks, NULL, | |
af4348dd | 571 | ldsize >> 9, INVALID_SECTORS, NULL, NULL, 0) == 0) { |
38aeaf3a N |
572 | if (!force) { |
573 | pr_err("%s is larger than %s can " | |
574 | "effectively use.\n" | |
575 | " Add --force is you " | |
576 | "really want to add this device.\n", | |
577 | dv->devname, devname); | |
578 | return -1; | |
579 | } | |
580 | pr_err("%s is larger than %s can " | |
581 | "effectively use.\n" | |
582 | " Adding anyway as --force " | |
583 | "was given.\n", | |
584 | dv->devname, devname); | |
585 | } | |
586 | if (!tst->ss->external && | |
587 | array->major_version == 0 && | |
588 | md_get_version(fd)%100 < 2) { | |
589 | if (ioctl(fd, HOT_ADD_DISK, rdev)==0) { | |
590 | if (verbose >= 0) | |
591 | pr_err("hot added %s\n", | |
592 | dv->devname); | |
593 | return 1; | |
594 | } | |
595 | ||
596 | pr_err("hot add failed for %s: %s\n", | |
597 | dv->devname, strerror(errno)); | |
598 | return -1; | |
599 | } | |
600 | ||
601 | if (array->not_persistent == 0 || tst->ss->external) { | |
602 | ||
603 | /* need to find a sample superblock to copy, and | |
604 | * a spare slot to use. | |
605 | * For 'external' array (well, container based), | |
606 | * We can just load the metadata for the array-> | |
607 | */ | |
608 | int array_failed; | |
609 | if (tst->sb) | |
610 | /* already loaded */; | |
611 | else if (tst->ss->external) { | |
612 | tst->ss->load_container(tst, fd, NULL); | |
613 | } else for (j = 0; j < tst->max_devs; j++) { | |
614 | char *dev; | |
615 | int dfd; | |
616 | disc.number = j; | |
617 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
618 | continue; | |
619 | if (disc.major==0 && disc.minor==0) | |
620 | continue; | |
621 | if ((disc.state & 4)==0) /* sync */ | |
622 | continue; | |
623 | /* Looks like a good device to try */ | |
624 | dev = map_dev(disc.major, disc.minor, 1); | |
625 | if (!dev) | |
626 | continue; | |
627 | dfd = dev_open(dev, O_RDONLY); | |
628 | if (dfd < 0) | |
629 | continue; | |
630 | if (tst->ss->load_super(tst, dfd, | |
631 | NULL)) { | |
632 | close(dfd); | |
633 | continue; | |
634 | } | |
635 | close(dfd); | |
636 | break; | |
637 | } | |
638 | /* FIXME this is a bad test to be using */ | |
639 | if (!tst->sb && dv->disposition != 'a') { | |
640 | /* we are re-adding a device to a | |
641 | * completely dead array - have to depend | |
642 | * on kernel to check | |
643 | */ | |
644 | } else if (!tst->sb) { | |
645 | pr_err("cannot load array metadata from %s\n", devname); | |
646 | return -1; | |
647 | } | |
648 | ||
649 | /* Make sure device is large enough */ | |
387fcd59 | 650 | if (tst->ss->avail_size(tst, ldsize/512, INVALID_SECTORS) < |
38aeaf3a N |
651 | array_size) { |
652 | if (dv->disposition == 'M') | |
653 | return 0; | |
654 | pr_err("%s not large enough to join array\n", | |
655 | dv->devname); | |
656 | return -1; | |
657 | } | |
658 | ||
659 | /* Possibly this device was recently part of | |
660 | * the array and was temporarily removed, and | |
661 | * is now being re-added. If so, we can | |
662 | * simply re-add it. | |
663 | */ | |
664 | ||
665 | if (array->not_persistent==0) { | |
666 | dev_st = dup_super(tst); | |
667 | dev_st->ss->load_super(dev_st, tfd, NULL); | |
668 | } | |
669 | if (dev_st && dev_st->sb) { | |
670 | int rv = attempt_re_add(fd, tfd, dv, | |
671 | dev_st, tst, | |
672 | rdev, | |
673 | update, devname, | |
674 | verbose, | |
675 | array); | |
676 | dev_st->ss->free_super(dev_st); | |
677 | if (rv) | |
678 | return rv; | |
679 | } | |
680 | if (dv->disposition == 'M') { | |
681 | if (verbose > 0) | |
682 | pr_err("--re-add for %s to %s is not possible\n", | |
683 | dv->devname, devname); | |
684 | return 0; | |
685 | } | |
686 | if (dv->disposition == 'A') { | |
687 | pr_err("--re-add for %s to %s is not possible\n", | |
688 | dv->devname, devname); | |
689 | return -1; | |
690 | } | |
691 | if (array->active_disks < array->raid_disks) { | |
692 | char *avail = xcalloc(array->raid_disks, 1); | |
693 | int d; | |
694 | int found = 0; | |
695 | ||
696 | for (d = 0; d < MAX_DISKS && found < array->active_disks; d++) { | |
697 | disc.number = d; | |
698 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
699 | continue; | |
700 | if (disc.major == 0 && disc.minor == 0) | |
701 | continue; | |
702 | if (!(disc.state & (1<<MD_DISK_SYNC))) | |
703 | continue; | |
704 | avail[disc.raid_disk] = 1; | |
705 | found++; | |
706 | } | |
707 | array_failed = !enough(array->level, array->raid_disks, | |
708 | array->layout, 1, avail); | |
709 | } else | |
710 | array_failed = 0; | |
711 | if (array_failed) { | |
712 | pr_err("%s has failed so using --add cannot work and might destroy\n", | |
713 | devname); | |
714 | pr_err("data on %s. You should stop the array and re-assemble it.\n", | |
715 | dv->devname); | |
716 | return -1; | |
717 | } | |
718 | } else { | |
719 | /* non-persistent. Must ensure that new drive | |
720 | * is at least array->size big. | |
721 | */ | |
722 | if (ldsize/512 < array_size) { | |
723 | pr_err("%s not large enough to join array\n", | |
724 | dv->devname); | |
725 | return -1; | |
726 | } | |
727 | } | |
728 | /* committed to really trying this device now*/ | |
729 | remove_partitions(tfd); | |
730 | ||
731 | /* in 2.6.17 and earlier, version-1 superblocks won't | |
732 | * use the number we write, but will choose a free number. | |
733 | * we must choose the same free number, which requires | |
734 | * starting at 'raid_disks' and counting up | |
735 | */ | |
736 | for (j = array->raid_disks; j < tst->max_devs; j++) { | |
737 | disc.number = j; | |
738 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
739 | break; | |
740 | if (disc.major==0 && disc.minor==0) | |
741 | break; | |
742 | if (disc.state & 8) /* removed */ | |
743 | break; | |
744 | } | |
745 | disc.major = major(rdev); | |
746 | disc.minor = minor(rdev); | |
747 | disc.number =j; | |
748 | disc.state = 0; | |
749 | if (array->not_persistent==0) { | |
750 | int dfd; | |
751 | if (dv->writemostly == 1) | |
752 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; | |
753 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); | |
754 | if (tst->ss->add_to_super(tst, &disc, dfd, | |
72ca9bcf | 755 | dv->devname, INVALID_SECTORS)) |
38aeaf3a N |
756 | return -1; |
757 | if (tst->ss->write_init_super(tst)) | |
758 | return -1; | |
759 | } else if (dv->disposition == 'A') { | |
760 | /* this had better be raid1. | |
761 | * As we are "--re-add"ing we must find a spare slot | |
762 | * to fill. | |
763 | */ | |
764 | char *used = xcalloc(array->raid_disks, 1); | |
765 | for (j = 0; j < tst->max_devs; j++) { | |
766 | mdu_disk_info_t disc2; | |
767 | disc2.number = j; | |
768 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
769 | continue; | |
770 | if (disc2.major==0 && disc2.minor==0) | |
771 | continue; | |
772 | if (disc2.state & 8) /* removed */ | |
773 | continue; | |
774 | if (disc2.raid_disk < 0) | |
775 | continue; | |
776 | if (disc2.raid_disk > array->raid_disks) | |
777 | continue; | |
778 | used[disc2.raid_disk] = 1; | |
779 | } | |
780 | for (j = 0 ; j < array->raid_disks; j++) | |
781 | if (!used[j]) { | |
782 | disc.raid_disk = j; | |
783 | disc.state |= (1<<MD_DISK_SYNC); | |
784 | break; | |
785 | } | |
786 | free(used); | |
787 | } | |
788 | if (dv->writemostly == 1) | |
789 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); | |
790 | if (tst->ss->external) { | |
791 | /* add a disk | |
792 | * to an external metadata container */ | |
793 | struct mdinfo new_mdi; | |
794 | struct mdinfo *sra; | |
795 | int container_fd; | |
4dd2df09 | 796 | char devnm[32]; |
38aeaf3a N |
797 | int dfd; |
798 | ||
4dd2df09 N |
799 | strcpy(devnm, fd2devnm(fd)); |
800 | ||
801 | container_fd = open_dev_excl(devnm); | |
38aeaf3a N |
802 | if (container_fd < 0) { |
803 | pr_err("add failed for %s:" | |
804 | " could not get exclusive access to container\n", | |
805 | dv->devname); | |
806 | tst->ss->free_super(tst); | |
807 | return -1; | |
808 | } | |
809 | ||
9cf9a1de | 810 | Kill(dv->devname, NULL, 0, -1, 0); |
38aeaf3a | 811 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
4dd2df09 | 812 | if (mdmon_running(tst->container_devnm)) |
38aeaf3a N |
813 | tst->update_tail = &tst->updates; |
814 | if (tst->ss->add_to_super(tst, &disc, dfd, | |
72ca9bcf | 815 | dv->devname, INVALID_SECTORS)) { |
38aeaf3a N |
816 | close(dfd); |
817 | close(container_fd); | |
818 | return -1; | |
819 | } | |
820 | if (tst->update_tail) | |
821 | flush_metadata_updates(tst); | |
822 | else | |
823 | tst->ss->sync_metadata(tst); | |
824 | ||
4dd2df09 | 825 | sra = sysfs_read(container_fd, NULL, 0); |
38aeaf3a N |
826 | if (!sra) { |
827 | pr_err("add failed for %s: sysfs_read failed\n", | |
828 | dv->devname); | |
829 | close(container_fd); | |
830 | tst->ss->free_super(tst); | |
831 | return -1; | |
832 | } | |
833 | sra->array.level = LEVEL_CONTAINER; | |
834 | /* Need to set data_offset and component_size */ | |
835 | tst->ss->getinfo_super(tst, &new_mdi, NULL); | |
836 | new_mdi.disk.major = disc.major; | |
837 | new_mdi.disk.minor = disc.minor; | |
838 | new_mdi.recovery_start = 0; | |
839 | /* Make sure fds are closed as they are O_EXCL which | |
840 | * would block add_disk */ | |
841 | tst->ss->free_super(tst); | |
842 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { | |
843 | pr_err("add new device to external metadata" | |
844 | " failed for %s\n", dv->devname); | |
845 | close(container_fd); | |
846 | sysfs_free(sra); | |
847 | return -1; | |
848 | } | |
4dd2df09 | 849 | ping_monitor(devnm); |
38aeaf3a N |
850 | sysfs_free(sra); |
851 | close(container_fd); | |
852 | } else { | |
853 | tst->ss->free_super(tst); | |
854 | if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
855 | pr_err("add new device failed for %s as %d: %s\n", | |
856 | dv->devname, j, strerror(errno)); | |
857 | return -1; | |
858 | } | |
859 | } | |
860 | if (verbose >= 0) | |
861 | pr_err("added %s\n", dv->devname); | |
862 | return 1; | |
863 | } | |
864 | ||
d070235d N |
865 | int Manage_remove(struct supertype *tst, int fd, struct mddev_dev *dv, |
866 | int sysfd, unsigned long rdev, int verbose, char *devname) | |
867 | { | |
868 | int lfd = -1; | |
869 | int err; | |
870 | ||
871 | if (tst->ss->external) { | |
872 | /* To remove a device from a container, we must | |
873 | * check that it isn't in use in an array. | |
874 | * This involves looking in the 'holders' | |
875 | * directory - there must be just one entry, | |
876 | * the container. | |
877 | * To ensure that it doesn't get used as a | |
878 | * hot spare while we are checking, we | |
879 | * get an O_EXCL open on the container | |
880 | */ | |
aab15415 | 881 | int ret; |
4dd2df09 N |
882 | char devnm[32]; |
883 | strcpy(devnm, fd2devnm(fd)); | |
884 | lfd = open_dev_excl(devnm); | |
d070235d N |
885 | if (lfd < 0) { |
886 | pr_err("Cannot get exclusive access " | |
887 | " to container - odd\n"); | |
888 | return -1; | |
889 | } | |
aab15415 N |
890 | /* We may not be able to check on holders in |
891 | * sysfs, either because we don't have the dev num | |
892 | * (rdev == 0) or because the device has been detached | |
893 | * and the 'holders' directory no longer exists | |
894 | * (ret == -1). In that case, assume it is OK to | |
895 | * remove. | |
d070235d | 896 | */ |
aab15415 N |
897 | if (rdev == 0) |
898 | ret = -1; | |
899 | else | |
4dd2df09 | 900 | ret = sysfs_unique_holder(devnm, rdev); |
aab15415 N |
901 | if (ret == 0) { |
902 | pr_err("%s is not a member, cannot remove.\n", | |
903 | dv->devname); | |
904 | close(lfd); | |
905 | return -1; | |
906 | } | |
907 | if (ret >= 2) { | |
908 | pr_err("%s is still in use, cannot remove.\n", | |
909 | dv->devname); | |
d070235d N |
910 | close(lfd); |
911 | return -1; | |
912 | } | |
913 | } | |
914 | /* FIXME check that it is a current member */ | |
915 | if (sysfd >= 0) { | |
916 | /* device has been removed and we don't know | |
917 | * the major:minor number | |
918 | */ | |
919 | int n = write(sysfd, "remove", 6); | |
920 | if (n != 6) | |
921 | err = -1; | |
922 | else | |
923 | err = 0; | |
924 | } else { | |
925 | err = ioctl(fd, HOT_REMOVE_DISK, rdev); | |
926 | if (err && errno == ENODEV) { | |
927 | /* Old kernels rejected this if no personality | |
928 | * is registered */ | |
4dd2df09 | 929 | struct mdinfo *sra = sysfs_read(fd, NULL, GET_DEVS); |
d070235d N |
930 | struct mdinfo *dv = NULL; |
931 | if (sra) | |
932 | dv = sra->devs; | |
933 | for ( ; dv ; dv=dv->next) | |
934 | if (dv->disk.major == (int)major(rdev) && | |
935 | dv->disk.minor == (int)minor(rdev)) | |
936 | break; | |
937 | if (dv) | |
938 | err = sysfs_set_str(sra, dv, | |
939 | "state", "remove"); | |
940 | else | |
941 | err = -1; | |
942 | if (sra) | |
943 | sysfs_free(sra); | |
944 | } | |
945 | } | |
946 | if (err) { | |
947 | pr_err("hot remove failed " | |
948 | "for %s: %s\n", dv->devname, | |
949 | strerror(errno)); | |
950 | if (lfd >= 0) | |
951 | close(lfd); | |
952 | return -1; | |
953 | } | |
954 | if (tst->ss->external) { | |
955 | /* | |
956 | * Before dropping our exclusive open we make an | |
957 | * attempt at preventing mdmon from seeing an | |
958 | * 'add' event before reconciling this 'remove' | |
959 | * event. | |
960 | */ | |
4dd2df09 | 961 | char *devnm = fd2devnm(fd); |
d070235d | 962 | |
4dd2df09 | 963 | if (!devnm) { |
d070235d N |
964 | pr_err("unable to get container name\n"); |
965 | return -1; | |
966 | } | |
967 | ||
4dd2df09 | 968 | ping_manager(devnm); |
d070235d N |
969 | } |
970 | if (lfd >= 0) | |
971 | close(lfd); | |
972 | if (verbose >= 0) | |
973 | pr_err("hot removed %s from %s\n", | |
974 | dv->devname, devname); | |
975 | return 1; | |
976 | } | |
977 | ||
70c55e36 N |
978 | int Manage_replace(struct supertype *tst, int fd, struct mddev_dev *dv, |
979 | unsigned long rdev, int verbose, char *devname) | |
980 | { | |
981 | struct mdinfo *mdi, *di; | |
982 | if (tst->ss->external) { | |
983 | pr_err("--replace only supported for native metadata (0.90 or 1.x)\n"); | |
984 | return -1; | |
985 | } | |
986 | /* Need to find the device in sysfs and add 'want_replacement' to the | |
987 | * status. | |
988 | */ | |
4dd2df09 | 989 | mdi = sysfs_read(fd, NULL, GET_DEVS); |
70c55e36 N |
990 | if (!mdi || !mdi->devs) { |
991 | pr_err("Cannot find status of %s to enable replacement - strange\n", | |
992 | devname); | |
993 | return -1; | |
994 | } | |
995 | for (di = mdi->devs; di; di = di->next) | |
996 | if (di->disk.major == (int)major(rdev) && | |
997 | di->disk.minor == (int)minor(rdev)) | |
998 | break; | |
999 | if (di) { | |
1000 | int rv; | |
1001 | if (di->disk.raid_disk < 0) { | |
1002 | pr_err("%s is not active and so cannot be replaced.\n", | |
1003 | dv->devname); | |
1004 | sysfs_free(mdi); | |
1005 | return -1; | |
1006 | } | |
1007 | rv = sysfs_set_str(mdi, di, | |
1008 | "state", "want_replacement"); | |
1009 | if (rv) { | |
1010 | sysfs_free(mdi); | |
1011 | pr_err("Failed to request replacement for %s\n", | |
1012 | dv->devname); | |
1013 | return -1; | |
1014 | } | |
1015 | if (verbose >= 0) | |
1016 | pr_err("Marked %s (device %d in %s) for replacement\n", | |
1017 | dv->devname, di->disk.raid_disk, devname); | |
1018 | /* If there is a matching 'with', we need to tell it which | |
1019 | * raid disk | |
1020 | */ | |
1021 | while (dv && dv->disposition != 'W') | |
1022 | dv = dv->next; | |
1023 | if (dv) { | |
1024 | dv->disposition = 'w'; | |
1025 | dv->used = di->disk.raid_disk; | |
1026 | } | |
1027 | return 1; | |
1028 | } | |
1029 | sysfs_free(mdi); | |
1030 | pr_err("%s not found in %s so cannot --replace it\n", | |
1031 | dv->devname, devname); | |
1032 | return -1; | |
1033 | } | |
1034 | ||
1035 | int Manage_with(struct supertype *tst, int fd, struct mddev_dev *dv, | |
1036 | unsigned long rdev, int verbose, char *devname) | |
1037 | { | |
1038 | struct mdinfo *mdi, *di; | |
1039 | /* try to set 'slot' for 'rdev' in 'fd' to 'dv->used' */ | |
4dd2df09 | 1040 | mdi = sysfs_read(fd, NULL, GET_DEVS|GET_STATE); |
70c55e36 N |
1041 | if (!mdi || !mdi->devs) { |
1042 | pr_err("Cannot find status of %s to enable replacement - strange\n", | |
1043 | devname); | |
1044 | return -1; | |
1045 | } | |
1046 | for (di = mdi->devs; di; di = di->next) | |
1047 | if (di->disk.major == (int)major(rdev) && | |
1048 | di->disk.minor == (int)minor(rdev)) | |
1049 | break; | |
1050 | if (di) { | |
1051 | int rv; | |
1052 | if (di->disk.state & (1<<MD_DISK_FAULTY)) { | |
1053 | pr_err("%s is faulty and cannot be a replacement\n", | |
1054 | dv->devname); | |
1055 | sysfs_free(mdi); | |
1056 | return -1; | |
1057 | } | |
1058 | if (di->disk.raid_disk >= 0) { | |
1059 | pr_err("%s is active and cannot be a replacement\n", | |
1060 | dv->devname); | |
1061 | sysfs_free(mdi); | |
1062 | return -1; | |
1063 | } | |
1064 | rv = sysfs_set_num(mdi, di, | |
1065 | "slot", dv->used); | |
1066 | if (rv) { | |
1067 | sysfs_free(mdi); | |
1068 | pr_err("Failed to %s as preferred replacement.\n", | |
1069 | dv->devname); | |
1070 | return -1; | |
1071 | } | |
1072 | if (verbose >= 0) | |
1073 | pr_err("Marked %s in %s as replacement for device %d\n", | |
1074 | dv->devname, devname, dv->used); | |
1075 | return 1; | |
1076 | } | |
1077 | sysfs_free(mdi); | |
1078 | pr_err("%s not found in %s so cannot make it preferred replacement\n", | |
1079 | dv->devname, devname); | |
1080 | return -1; | |
1081 | } | |
1082 | ||
64c4757e | 1083 | int Manage_subdevs(char *devname, int fd, |
833bb0f8 | 1084 | struct mddev_dev *devlist, int verbose, int test, |
11b391ec | 1085 | char *update, int force) |
cd29a5c8 | 1086 | { |
7bd04da9 | 1087 | /* Do something to each dev. |
682c7051 NB |
1088 | * devmode can be |
1089 | * 'a' - add the device | |
1090 | * try HOT_ADD_DISK | |
1091 | * If that fails EINVAL, try ADD_NEW_DISK | |
7bd04da9 N |
1092 | * 'A' - re-add the device |
1093 | * 'r' - remove the device: HOT_REMOVE_DISK | |
b80da661 NB |
1094 | * device can be 'faulty' or 'detached' in which case all |
1095 | * matching devices are removed. | |
682c7051 | 1096 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
1097 | * device can be 'detached' in which case any device that |
1098 | * is inaccessible will be marked faulty. | |
70c55e36 N |
1099 | * 'R' - mark this device as wanting replacement. |
1100 | * 'W' - this device is added if necessary and activated as | |
1101 | * a replacement for a previous 'R' device. | |
1102 | * ----- | |
1103 | * 'w' - 'W' will be changed to 'w' when it is paired with | |
1104 | * a 'R' device. If a 'W' is found while walking the list | |
1105 | * it must be unpaired, and is an error. | |
1106 | * 'M' - this is created by a 'missing' target. It is a slight | |
1107 | * variant on 'A' | |
262e3b7f N |
1108 | * 'F' - Another variant of 'A', where the device was faulty |
1109 | * so must be removed from the array first. | |
70c55e36 | 1110 | * |
98d27e39 N |
1111 | * For 'f' and 'r', the device can also be a kernel-internal |
1112 | * name such as 'sdb'. | |
682c7051 NB |
1113 | */ |
1114 | mdu_array_info_t array; | |
7a3be72f | 1115 | unsigned long long array_size; |
1d997643 | 1116 | struct mddev_dev *dv; |
682c7051 | 1117 | struct stat stb; |
cfad27a9 | 1118 | int tfd = -1; |
38aeaf3a | 1119 | struct supertype *tst; |
4725bc31 | 1120 | char *subarray = NULL; |
98d27e39 | 1121 | int sysfd = -1; |
7d2e6486 | 1122 | int count = 0; /* number of actions taken */ |
9f584691 N |
1123 | struct mdinfo info; |
1124 | int frozen = 0; | |
8af530b0 | 1125 | int busy = 0; |
682c7051 NB |
1126 | |
1127 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
7bd04da9 | 1128 | pr_err("Cannot get array info for %s\n", |
682c7051 | 1129 | devname); |
bcbb3112 | 1130 | goto abort; |
682c7051 | 1131 | } |
4dd2df09 | 1132 | sysfs_init(&info, fd, NULL); |
3da92f27 | 1133 | |
7bd04da9 | 1134 | /* array.size is only 32 bits and may be truncated. |
7a3be72f NB |
1135 | * So read from sysfs if possible, and record number of sectors |
1136 | */ | |
1137 | ||
1138 | array_size = get_component_size(fd); | |
1139 | if (array_size <= 0) | |
1140 | array_size = array.size * 2; | |
1141 | ||
4725bc31 | 1142 | tst = super_by_fd(fd, &subarray); |
3da92f27 | 1143 | if (!tst) { |
e7b84f9d | 1144 | pr_err("unsupport array - version %d.%d\n", |
3da92f27 | 1145 | array.major_version, array.minor_version); |
bcbb3112 | 1146 | goto abort; |
3da92f27 NB |
1147 | } |
1148 | ||
b3b4e8a7 | 1149 | stb.st_rdev = 0; |
38aeaf3a | 1150 | for (dv = devlist; dv; dv = dv->next) { |
38aeaf3a | 1151 | int rv; |
4a39c6f2 | 1152 | |
1d997643 N |
1153 | if (strcmp(dv->devname, "failed") == 0 || |
1154 | strcmp(dv->devname, "faulty") == 0) { | |
262e3b7f N |
1155 | if (dv->disposition != 'A' |
1156 | && dv->disposition != 'r') { | |
e7b84f9d | 1157 | pr_err("%s only meaningful " |
262e3b7f | 1158 | "with -r or --re-add, not -%c\n", |
b80da661 | 1159 | dv->devname, dv->disposition); |
bcbb3112 | 1160 | goto abort; |
b80da661 | 1161 | } |
262e3b7f N |
1162 | add_faulty(dv, fd, (dv->disposition == 'A' |
1163 | ? 'F' : 'r')); | |
1d997643 N |
1164 | continue; |
1165 | } | |
1166 | if (strcmp(dv->devname, "detached") == 0) { | |
b80da661 | 1167 | if (dv->disposition != 'r' && dv->disposition != 'f') { |
e7b84f9d | 1168 | pr_err("%s only meaningful " |
b80da661 NB |
1169 | "with -r of -f, not -%c\n", |
1170 | dv->devname, dv->disposition); | |
bcbb3112 | 1171 | goto abort; |
b80da661 | 1172 | } |
1d997643 N |
1173 | add_detached(dv, fd, dv->disposition); |
1174 | continue; | |
1175 | } | |
1176 | ||
1177 | if (strcmp(dv->devname, "missing") == 0) { | |
1178 | struct mddev_dev *add_devlist = NULL; | |
1179 | struct mddev_dev **dp; | |
c8e1a230 | 1180 | if (dv->disposition != 'A') { |
e7b84f9d | 1181 | pr_err("'missing' only meaningful " |
aab15415 | 1182 | "with --re-add\n"); |
bcbb3112 | 1183 | goto abort; |
a4e13010 | 1184 | } |
1d997643 | 1185 | add_devlist = conf_get_devs(); |
a4e13010 | 1186 | if (add_devlist == NULL) { |
e7b84f9d | 1187 | pr_err("no devices to scan for missing members."); |
a4e13010 N |
1188 | continue; |
1189 | } | |
1d997643 | 1190 | for (dp = &add_devlist; *dp; dp = & (*dp)->next) |
7bd04da9 | 1191 | /* 'M' (for 'missing') is like 'A' without errors */ |
1d997643 N |
1192 | (*dp)->disposition = 'M'; |
1193 | *dp = dv->next; | |
1194 | dv->next = add_devlist; | |
1195 | continue; | |
1196 | } | |
1197 | ||
1198 | if (strchr(dv->devname, '/') == NULL && | |
aab15415 N |
1199 | strchr(dv->devname, ':') == NULL && |
1200 | strlen(dv->devname) < 50) { | |
98d27e39 N |
1201 | /* Assume this is a kernel-internal name like 'sda1' */ |
1202 | int found = 0; | |
1203 | char dname[55]; | |
1204 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
e7b84f9d | 1205 | pr_err("%s only meaningful " |
cfad27a9 | 1206 | "with -r or -f, not -%c\n", |
98d27e39 | 1207 | dv->devname, dv->disposition); |
bcbb3112 | 1208 | goto abort; |
98d27e39 N |
1209 | } |
1210 | ||
1211 | sprintf(dname, "dev-%s", dv->devname); | |
4dd2df09 | 1212 | sysfd = sysfs_open(fd2devnm(fd), dname, "block/dev"); |
98d27e39 N |
1213 | if (sysfd >= 0) { |
1214 | char dn[20]; | |
1215 | int mj,mn; | |
1216 | if (sysfs_fd_get_str(sysfd, dn, 20) > 0 && | |
1217 | sscanf(dn, "%d:%d", &mj,&mn) == 2) { | |
1218 | stb.st_rdev = makedev(mj,mn); | |
1219 | found = 1; | |
1220 | } | |
1221 | close(sysfd); | |
1222 | sysfd = -1; | |
1223 | } | |
1224 | if (!found) { | |
4dd2df09 | 1225 | sysfd = sysfs_open(fd2devnm(fd), dname, "state"); |
98d27e39 | 1226 | if (sysfd < 0) { |
e7b84f9d | 1227 | pr_err("%s does not appear " |
98d27e39 N |
1228 | "to be a component of %s\n", |
1229 | dv->devname, devname); | |
bcbb3112 | 1230 | goto abort; |
98d27e39 N |
1231 | } |
1232 | } | |
b80da661 | 1233 | } else { |
c7b47447 | 1234 | tfd = dev_open(dv->devname, O_RDONLY); |
5fe7f5f7 N |
1235 | if (tfd >= 0) |
1236 | fstat(tfd, &stb); | |
5a9de8db | 1237 | else { |
5fe7f5f7 N |
1238 | int open_err = errno; |
1239 | if (stat(dv->devname, &stb) != 0) { | |
1240 | pr_err("Cannot find %s: %s\n", | |
1241 | dv->devname, strerror(errno)); | |
1242 | goto abort; | |
1243 | } | |
1244 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
1245 | if (dv->disposition == 'M') | |
1246 | /* non-fatal. Also improbable */ | |
1247 | continue; | |
1248 | pr_err("%s is not a block device.\n", | |
1249 | dv->devname); | |
1250 | goto abort; | |
1251 | } | |
1252 | if (dv->disposition == 'r') | |
1253 | /* Be happy, the stat worked, that is | |
1254 | * enough for --remove | |
1255 | */ | |
1256 | ; | |
1257 | else { | |
1d997643 N |
1258 | if (dv->disposition == 'M') |
1259 | /* non-fatal */ | |
1260 | continue; | |
839f27a3 | 1261 | pr_err("Cannot open %s: %s\n", |
5fe7f5f7 | 1262 | dv->devname, strerror(open_err)); |
bcbb3112 | 1263 | goto abort; |
5a9de8db | 1264 | } |
b80da661 | 1265 | } |
682c7051 | 1266 | } |
cd29a5c8 | 1267 | switch(dv->disposition){ |
682c7051 | 1268 | default: |
e7b84f9d | 1269 | pr_err("internal error - devmode[%s]=%d\n", |
c913b90e | 1270 | dv->devname, dv->disposition); |
bcbb3112 | 1271 | goto abort; |
682c7051 | 1272 | case 'a': |
c8e1a230 | 1273 | case 'A': |
262e3b7f N |
1274 | case 'M': /* --re-add missing */ |
1275 | case 'F': /* --re-add faulty */ | |
4a39c6f2 | 1276 | /* add the device */ |
4725bc31 | 1277 | if (subarray) { |
e7b84f9d | 1278 | pr_err("Cannot add disks to a" |
f7dd881f DW |
1279 | " \'member\' array, perform this" |
1280 | " operation on the parent container\n"); | |
bcbb3112 | 1281 | goto abort; |
f94d52f4 | 1282 | } |
262e3b7f N |
1283 | if (dv->disposition == 'F') |
1284 | /* Need to remove first */ | |
1285 | ioctl(fd, HOT_REMOVE_DISK, | |
1286 | (unsigned long)stb.st_rdev); | |
f277ce36 | 1287 | /* Make sure it isn't in use (in 2.6 or later) */ |
1d997643 | 1288 | tfd = dev_open(dv->devname, O_RDONLY|O_EXCL); |
38aeaf3a N |
1289 | if (tfd >= 0) { |
1290 | /* We know no-one else is using it. We'll | |
1291 | * need non-exclusive access to add it, so | |
1292 | * do that now. | |
1293 | */ | |
1294 | close(tfd); | |
1295 | tfd = dev_open(dv->devname, O_RDONLY); | |
1296 | } | |
0fbf459d | 1297 | if (tfd < 0) { |
1d997643 N |
1298 | if (dv->disposition == 'M') |
1299 | continue; | |
e7b84f9d | 1300 | pr_err("Cannot open %s: %s\n", |
d7eaf49f | 1301 | dv->devname, strerror(errno)); |
bcbb3112 | 1302 | goto abort; |
d7eaf49f | 1303 | } |
9f584691 N |
1304 | if (!frozen) { |
1305 | if (sysfs_freeze_array(&info) == 1) | |
1306 | frozen = 1; | |
1307 | else | |
1308 | frozen = -1; | |
1309 | } | |
38aeaf3a N |
1310 | rv = Manage_add(fd, tfd, dv, tst, &array, |
1311 | force, verbose, devname, update, | |
1312 | stb.st_rdev, array_size); | |
1313 | close(tfd); | |
1314 | tfd = -1; | |
1315 | if (rv < 0) | |
bcbb3112 | 1316 | goto abort; |
38aeaf3a N |
1317 | if (rv > 0) |
1318 | count++; | |
682c7051 NB |
1319 | break; |
1320 | ||
1321 | case 'r': | |
1322 | /* hot remove */ | |
4725bc31 | 1323 | if (subarray) { |
e7b84f9d | 1324 | pr_err("Cannot remove disks from a" |
f7dd881f DW |
1325 | " \'member\' array, perform this" |
1326 | " operation on the parent container\n"); | |
d070235d N |
1327 | rv = -1; |
1328 | } else | |
1329 | rv = Manage_remove(tst, fd, dv, sysfd, | |
1330 | stb.st_rdev, verbose, | |
1331 | devname); | |
1332 | if (sysfd >= 0) | |
98d27e39 | 1333 | close(sysfd); |
d070235d N |
1334 | sysfd = -1; |
1335 | if (rv < 0) | |
bcbb3112 | 1336 | goto abort; |
d070235d N |
1337 | if (rv > 0) |
1338 | count++; | |
682c7051 NB |
1339 | break; |
1340 | ||
1341 | case 'f': /* set faulty */ | |
1342 | /* FIXME check current member */ | |
98d27e39 N |
1343 | if ((sysfd >= 0 && write(sysfd, "faulty", 6) != 6) || |
1344 | (sysfd < 0 && ioctl(fd, SET_DISK_FAULTY, | |
1345 | (unsigned long) stb.st_rdev))) { | |
8af530b0 N |
1346 | if (errno == EBUSY) |
1347 | busy = 1; | |
e7b84f9d | 1348 | pr_err("set device faulty failed for %s: %s\n", |
1d997643 | 1349 | dv->devname, strerror(errno)); |
98d27e39 N |
1350 | if (sysfd >= 0) |
1351 | close(sysfd); | |
bcbb3112 | 1352 | goto abort; |
682c7051 | 1353 | } |
98d27e39 N |
1354 | if (sysfd >= 0) |
1355 | close(sysfd); | |
1356 | sysfd = -1; | |
7d2e6486 | 1357 | count++; |
dab6685f | 1358 | if (verbose >= 0) |
e7b84f9d | 1359 | pr_err("set %s faulty in %s\n", |
1d997643 | 1360 | dv->devname, devname); |
682c7051 | 1361 | break; |
70c55e36 N |
1362 | case 'R': /* Mark as replaceable */ |
1363 | if (subarray) { | |
1364 | pr_err("Cannot replace disks in a" | |
1365 | " \'member\' array, perform this" | |
1366 | " operation on the parent container\n"); | |
1367 | rv = -1; | |
1368 | } else { | |
1369 | if (!frozen) { | |
1370 | if (sysfs_freeze_array(&info) == 1) | |
1371 | frozen = 1; | |
1372 | else | |
1373 | frozen = -1; | |
1374 | } | |
1375 | rv = Manage_replace(tst, fd, dv, | |
1376 | stb.st_rdev, verbose, | |
1377 | devname); | |
1378 | } | |
1379 | if (rv < 0) | |
1380 | goto abort; | |
1381 | if (rv > 0) | |
1382 | count++; | |
1383 | break; | |
1384 | case 'W': /* --with device that doesn't match */ | |
1385 | pr_err("No matching --replace device for --with %s\n", | |
1386 | dv->devname); | |
1387 | goto abort; | |
1388 | case 'w': /* --with device which was matched */ | |
1389 | rv = Manage_with(tst, fd, dv, | |
1390 | stb.st_rdev, verbose, devname); | |
1391 | if (rv < 0) | |
1392 | goto abort; | |
1393 | break; | |
682c7051 NB |
1394 | } |
1395 | } | |
9f584691 N |
1396 | if (frozen > 0) |
1397 | sysfs_set_str(&info, NULL, "sync_action","idle"); | |
7d2e6486 N |
1398 | if (test && count == 0) |
1399 | return 2; | |
682c7051 | 1400 | return 0; |
bcbb3112 N |
1401 | |
1402 | abort: | |
9f584691 N |
1403 | if (frozen > 0) |
1404 | sysfs_set_str(&info, NULL, "sync_action","idle"); | |
8af530b0 | 1405 | return !test && busy ? 2 : 1; |
64c4757e | 1406 | } |
1f48664b NB |
1407 | |
1408 | int autodetect(void) | |
1409 | { | |
1410 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
1411 | int rv = 1; | |
1412 | int fd = dev_open("9:0", O_RDONLY); | |
1413 | if (fd >= 0) { | |
1414 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
1415 | rv = 0; | |
1416 | close(fd); | |
1417 | } | |
1418 | return rv; | |
1419 | } | |
aa534678 | 1420 | |
ba728be7 | 1421 | int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident *ident, int verbose) |
aa534678 DW |
1422 | { |
1423 | struct supertype supertype, *st = &supertype; | |
1424 | int fd, rv = 2; | |
1425 | ||
1426 | memset(st, 0, sizeof(*st)); | |
aa534678 | 1427 | |
ba728be7 | 1428 | fd = open_subarray(dev, subarray, st, verbose < 0); |
aa534678 DW |
1429 | if (fd < 0) |
1430 | return 2; | |
1431 | ||
1432 | if (!st->ss->update_subarray) { | |
ba728be7 | 1433 | if (verbose >= 0) |
e7b84f9d N |
1434 | pr_err("Operation not supported for %s metadata\n", |
1435 | st->ss->name); | |
aa534678 DW |
1436 | goto free_super; |
1437 | } | |
1438 | ||
4dd2df09 | 1439 | if (mdmon_running(st->devnm)) |
aa534678 DW |
1440 | st->update_tail = &st->updates; |
1441 | ||
a951a4f7 | 1442 | rv = st->ss->update_subarray(st, subarray, update, ident); |
aa534678 DW |
1443 | |
1444 | if (rv) { | |
ba728be7 | 1445 | if (verbose >= 0) |
e7b84f9d | 1446 | pr_err("Failed to update %s of subarray-%s in %s\n", |
aa534678 DW |
1447 | update, subarray, dev); |
1448 | } else if (st->update_tail) | |
1449 | flush_metadata_updates(st); | |
1450 | else | |
1451 | st->ss->sync_metadata(st); | |
1452 | ||
ba728be7 | 1453 | if (rv == 0 && strcmp(update, "name") == 0 && verbose >= 0) |
e7b84f9d N |
1454 | pr_err("Updated subarray-%s name from %s, UUIDs may have changed\n", |
1455 | subarray, dev); | |
aa534678 DW |
1456 | |
1457 | free_super: | |
1458 | st->ss->free_super(st); | |
1459 | close(fd); | |
1460 | ||
1461 | return rv; | |
1462 | } | |
d52bb542 | 1463 | |
7bd04da9 N |
1464 | /* Move spare from one array to another If adding to destination array fails |
1465 | * add back to original array. | |
d52bb542 AC |
1466 | * Returns 1 on success, 0 on failure */ |
1467 | int move_spare(char *from_devname, char *to_devname, dev_t devid) | |
1468 | { | |
1469 | struct mddev_dev devlist; | |
1470 | char devname[20]; | |
1471 | ||
1472 | /* try to remove and add */ | |
1473 | int fd1 = open(to_devname, O_RDONLY); | |
1474 | int fd2 = open(from_devname, O_RDONLY); | |
1475 | ||
1476 | if (fd1 < 0 || fd2 < 0) { | |
1477 | if (fd1>=0) close(fd1); | |
1478 | if (fd2>=0) close(fd2); | |
1479 | return 0; | |
1480 | } | |
1481 | ||
1482 | devlist.next = NULL; | |
1483 | devlist.used = 0; | |
d52bb542 AC |
1484 | devlist.writemostly = 0; |
1485 | devlist.devname = devname; | |
1486 | sprintf(devname, "%d:%d", major(devid), minor(devid)); | |
1487 | ||
1488 | devlist.disposition = 'r'; | |
11b391ec | 1489 | if (Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 | 1490 | devlist.disposition = 'a'; |
11b391ec | 1491 | if (Manage_subdevs(to_devname, fd1, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 AC |
1492 | /* make sure manager is aware of changes */ |
1493 | ping_manager(to_devname); | |
1494 | ping_manager(from_devname); | |
1495 | close(fd1); | |
1496 | close(fd2); | |
1497 | return 1; | |
1498 | } | |
11b391ec | 1499 | else Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0); |
d52bb542 AC |
1500 | } |
1501 | close(fd1); | |
1502 | close(fd2); | |
1503 | return 0; | |
1504 | } | |
435d4ebb | 1505 | #endif |