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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 | * |
6f02172d | 4 | * Copyright (C) 2001-2013 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 | |
1011e834 N |
30 | #define REGISTER_DEV _IO (MD_MAJOR, 1) |
31 | #define START_MD _IO (MD_MAJOR, 2) | |
32 | #define STOP_MD _IO (MD_MAJOR, 3) | |
82b27616 | 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 | |
d5a40416 | 173 | int Manage_run(char *devname, int fd, struct context *c) |
64c4757e | 174 | { |
fe7e0e64 N |
175 | /* Run the array. Array must already be configured |
176 | * Requires >= 0.90.0 | |
682c7051 | 177 | */ |
d3786cdc | 178 | char nm[32], *nmp; |
82b27616 | 179 | |
fe7e0e64 N |
180 | if (md_get_version(fd) < 9000) { |
181 | pr_err("need md driver version 0.90.0 or later\n"); | |
182 | return 1; | |
183 | } | |
d3786cdc N |
184 | nmp = fd2devnm(fd); |
185 | if (!nmp) { | |
186 | pr_err("Cannot find %s in sysfs!!\n", devname); | |
fe7e0e64 N |
187 | return 1; |
188 | } | |
d3786cdc | 189 | strcpy(nm, nmp); |
d5a40416 | 190 | return IncrementalScan(c, nm); |
fe7e0e64 N |
191 | } |
192 | ||
193 | int Manage_stop(char *devname, int fd, int verbose, int will_retry) | |
194 | { | |
195 | /* Stop the array. Array must already be configured | |
196 | * 'will_retry' means that error messages are not wanted. | |
197 | */ | |
198 | int rv = 0; | |
199 | struct map_ent *map = NULL; | |
200 | struct mdinfo *mdi; | |
201 | char devnm[32]; | |
202 | char container[32]; | |
203 | int err; | |
204 | int count; | |
2eba8496 N |
205 | char buf[32]; |
206 | unsigned long long rd1, rd2; | |
fe7e0e64 | 207 | |
ba728be7 N |
208 | if (will_retry && verbose == 0) |
209 | verbose = -1; | |
210 | ||
fe7e0e64 | 211 | if (md_get_version(fd) < 9000) { |
7bd04da9 N |
212 | if (ioctl(fd, STOP_MD, 0) == 0) |
213 | return 0; | |
214 | pr_err("stopping device %s " | |
215 | "failed: %s\n", | |
216 | devname, strerror(errno)); | |
217 | return 1; | |
82b27616 | 218 | } |
aba69144 | 219 | |
fe7e0e64 N |
220 | /* If this is an mdmon managed array, just write 'inactive' |
221 | * to the array state and let mdmon clear up. | |
222 | */ | |
223 | strcpy(devnm, fd2devnm(fd)); | |
224 | /* Get EXCL access first. If this fails, then attempting | |
225 | * to stop is probably a bad idea. | |
226 | */ | |
2eba8496 | 227 | mdi = sysfs_read(fd, NULL, GET_LEVEL|GET_COMPONENT|GET_VERSION); |
fe7e0e64 N |
228 | if (mdi && is_subarray(mdi->text_version)) { |
229 | char *sl; | |
230 | strncpy(container, mdi->text_version+1, sizeof(container)); | |
231 | container[sizeof(container)-1] = 0; | |
232 | sl = strchr(container, '/'); | |
233 | if (sl) | |
234 | *sl = 0; | |
235 | } else | |
236 | container[0] = 0; | |
237 | close(fd); | |
238 | count = 5; | |
239 | while (((fd = ((devnm[0] == '/') | |
240 | ?open(devname, O_RDONLY|O_EXCL) | |
241 | :open_dev_flags(devnm, O_RDONLY|O_EXCL))) < 0 | |
242 | || strcmp(fd2devnm(fd), devnm) != 0) | |
243 | && container[0] | |
244 | && mdmon_running(container) | |
245 | && count) { | |
246 | if (fd >= 0) | |
247 | close(fd); | |
248 | flush_mdmon(container); | |
249 | count--; | |
682c7051 | 250 | } |
fe7e0e64 N |
251 | if (fd < 0 || strcmp(fd2devnm(fd), devnm) != 0) { |
252 | if (fd >= 0) | |
253 | close(fd); | |
ba728be7 | 254 | if (verbose >= 0) |
fe7e0e64 N |
255 | pr_err("Cannot get exclusive access to %s:" |
256 | "Perhaps a running " | |
257 | "process, mounted filesystem " | |
258 | "or active volume group?\n", | |
259 | devname); | |
260 | return 1; | |
261 | } | |
262 | if (mdi && | |
263 | mdi->array.level > 0 && | |
264 | is_subarray(mdi->text_version)) { | |
eb0af526 | 265 | int err; |
fe7e0e64 | 266 | /* This is mdmon managed. */ |
eb0af526 | 267 | close(fd); |
daf7a3ce | 268 | |
eb0af526 N |
269 | /* As we have an O_EXCL open, any use of the device |
270 | * which blocks STOP_ARRAY is probably a transient use, | |
271 | * so it is reasonable to retry for a while - 5 seconds. | |
272 | */ | |
fe7e0e64 N |
273 | count = 25; |
274 | while (count && | |
275 | (err = sysfs_set_str(mdi, NULL, | |
276 | "array_state", | |
277 | "inactive")) < 0 | |
eb0af526 N |
278 | && errno == EBUSY) { |
279 | usleep(200000); | |
fe7e0e64 | 280 | count--; |
eb0af526 | 281 | } |
fe7e0e64 N |
282 | if (err) { |
283 | if (verbose >= 0) | |
e7b84f9d N |
284 | pr_err("failed to stop array %s: %s\n", |
285 | devname, strerror(errno)); | |
bccd8153 JS |
286 | rv = 1; |
287 | goto out; | |
682c7051 | 288 | } |
fe7e0e64 N |
289 | |
290 | /* Give monitor a chance to act */ | |
291 | ping_monitor(mdi->text_version); | |
292 | ||
293 | fd = open_dev_excl(devnm); | |
294 | if (fd < 0) { | |
295 | if (verbose >= 0) | |
296 | pr_err("failed to completely stop %s" | |
297 | ": Device is busy\n", | |
298 | devname); | |
299 | rv = 1; | |
300 | goto out; | |
301 | } | |
302 | } else if (mdi && | |
303 | mdi->array.major_version == -1 && | |
304 | mdi->array.minor_version == -2 && | |
305 | !is_subarray(mdi->text_version)) { | |
306 | struct mdstat_ent *mds, *m; | |
307 | /* container, possibly mdmon-managed. | |
308 | * Make sure mdmon isn't opening it, which | |
309 | * would interfere with the 'stop' | |
97590376 | 310 | */ |
fe7e0e64 | 311 | ping_monitor(mdi->sys_name); |
daf7a3ce | 312 | |
fe7e0e64 N |
313 | /* now check that there are no existing arrays |
314 | * which are members of this array | |
315 | */ | |
316 | mds = mdstat_read(0, 0); | |
317 | for (m = mds; m; m = m->next) | |
318 | if (m->metadata_version && | |
319 | strncmp(m->metadata_version, "external:", 9)==0 && | |
320 | metadata_container_matches(m->metadata_version+9, | |
321 | devnm)) { | |
322 | if (verbose >= 0) | |
323 | pr_err("Cannot stop container %s: " | |
324 | "member %s still active\n", | |
325 | devname, m->dev); | |
326 | free_mdstat(mds); | |
327 | rv = 1; | |
328 | goto out; | |
329 | } | |
330 | } | |
331 | ||
2eba8496 N |
332 | /* If the array is undergoing a reshape which changes the number |
333 | * of devices, then it would be nice to stop it at a point where | |
334 | * it has completed a full number of stripes in both old and | |
335 | * new layouts as this will allow the reshape to be reverted. | |
336 | * So if 'sync_action' is "reshape" and 'raid_disks' shows two | |
337 | * different numbers, then | |
338 | * - freeze reshape | |
339 | * - set sync_max to next multiple of both data_disks and | |
340 | * chunk sizes (or next but one) | |
341 | * - unfreeze reshape | |
342 | * - wait on 'sync_completed' for that point to be reached. | |
343 | */ | |
344 | if (mdi && (mdi->array.level >= 4 && mdi->array.level <= 6) && | |
345 | sysfs_attribute_available(mdi, NULL, "sync_action") && | |
346 | sysfs_attribute_available(mdi, NULL, "reshape_direction") && | |
347 | sysfs_get_str(mdi, NULL, "sync_action", buf, 20) > 0 && | |
348 | strcmp(buf, "reshape\n") == 0 && | |
349 | sysfs_get_two(mdi, NULL, "raid_disks", &rd1, &rd2) == 2 && | |
350 | sysfs_set_str(mdi, NULL, "sync_action", "frozen") == 0) { | |
351 | /* Array is frozen */ | |
352 | unsigned long long position, curr; | |
353 | unsigned long long chunk1, chunk2; | |
354 | unsigned long long rddiv, chunkdiv; | |
355 | unsigned long long sectors; | |
5509dc44 N |
356 | unsigned long long sync_max, old_sync_max; |
357 | unsigned long long completed; | |
2eba8496 N |
358 | int backwards = 0; |
359 | int delay; | |
360 | int scfd; | |
361 | ||
362 | rd1 -= mdi->array.level == 6 ? 2 : 1; | |
363 | rd2 -= mdi->array.level == 6 ? 2 : 1; | |
364 | sysfs_get_str(mdi, NULL, "reshape_direction", buf, sizeof(buf)); | |
365 | if (strncmp(buf, "back", 4) == 0) | |
366 | backwards = 1; | |
367 | sysfs_get_ll(mdi, NULL, "reshape_position", &position); | |
368 | sysfs_get_two(mdi, NULL, "chunk_size", &chunk1, &chunk2); | |
369 | chunk1 /= 512; | |
370 | chunk2 /= 512; | |
371 | rddiv = GCD(rd1, rd2); | |
372 | chunkdiv = GCD(chunk1, chunk2); | |
373 | sectors = (chunk1/chunkdiv) * chunk2 * (rd1/rddiv) * rd2; | |
374 | ||
375 | if (backwards) { | |
376 | /* Need to subtract 'reshape_position' from | |
377 | * array size to get equivalent of sync_max. | |
378 | * Size calculation based on raid5_size in kernel. | |
379 | */ | |
380 | unsigned long long size = mdi->component_size; | |
381 | size &= ~(chunk1-1); | |
382 | size &= ~(chunk2-1); | |
383 | /* rd1 must be smaller */ | |
5509dc44 N |
384 | position = (position / sectors - 1) * sectors; |
385 | sync_max = size - position/rd1; | |
2eba8496 | 386 | } else { |
5509dc44 N |
387 | position = (position / sectors + 2) * sectors; |
388 | sync_max = position/rd1; | |
2eba8496 | 389 | } |
5509dc44 N |
390 | if (sysfs_get_ll(mdi, NULL, "sync_max", &old_sync_max) < 0) |
391 | old_sync_max = mdi->component_size; | |
392 | /* Must not advance sync_max as that could confuse | |
393 | * the reshape monitor */ | |
394 | if (sync_max < old_sync_max) | |
395 | sysfs_set_num(mdi, NULL, "sync_max", sync_max); | |
2eba8496 N |
396 | sysfs_set_str(mdi, NULL, "sync_action", "idle"); |
397 | ||
398 | /* That should have set things going again. Now we | |
3afaff93 | 399 | * wait a little while (3 second max) for sync_completed |
2eba8496 | 400 | * to reach the target. |
3afaff93 N |
401 | * The reshape process can block for 500msec if |
402 | * the sync speed limit is hit, so we need to wait | |
403 | * a lot longer than that. 1 second is usually | |
404 | * enough. 3 is safe. | |
2eba8496 | 405 | */ |
3afaff93 | 406 | delay = 3000; |
2eba8496 | 407 | scfd = sysfs_open(mdi->sys_name, NULL, "sync_completed"); |
3afaff93 | 408 | while (scfd >= 0 && delay > 0 && old_sync_max > 0) { |
5509dc44 | 409 | sysfs_get_ll(mdi, NULL, "reshape_position", &curr); |
2eba8496 | 410 | sysfs_fd_get_str(scfd, buf, sizeof(buf)); |
3afaff93 N |
411 | if (strncmp(buf, "none", 4) == 0) { |
412 | /* Either reshape has aborted, or hasn't | |
413 | * quite started yet. Wait a bit and | |
414 | * check 'sync_action' to see. | |
415 | */ | |
416 | usleep(10000); | |
417 | sysfs_get_str(mdi, NULL, "sync_action", buf, sizeof(buf)); | |
418 | if (strncmp(buf, "reshape", 7) != 0) | |
419 | break; | |
420 | } | |
5509dc44 N |
421 | |
422 | if (sysfs_fd_get_ll(scfd, &completed) == 0 && | |
423 | (completed > sync_max || | |
424 | (completed == sync_max && curr != position))) { | |
425 | while (completed > sync_max) { | |
426 | sync_max += sectors / rd1; | |
427 | if (backwards) | |
428 | position -= sectors; | |
429 | else | |
430 | position += sectors; | |
431 | } | |
432 | if (sync_max < old_sync_max) | |
433 | sysfs_set_num(mdi, NULL, "sync_max", sync_max); | |
434 | } | |
435 | ||
2eba8496 N |
436 | if (!backwards && curr >= position) |
437 | break; | |
438 | if (backwards && curr <= position) | |
439 | break; | |
440 | sysfs_wait(scfd, &delay); | |
441 | } | |
442 | if (scfd >= 0) | |
443 | close(scfd); | |
444 | ||
445 | } | |
446 | ||
fe7e0e64 N |
447 | /* As we have an O_EXCL open, any use of the device |
448 | * which blocks STOP_ARRAY is probably a transient use, | |
449 | * so it is reasonable to retry for a while - 5 seconds. | |
450 | */ | |
451 | count = 25; err = 0; | |
452 | while (count && fd >= 0 | |
453 | && (err = ioctl(fd, STOP_ARRAY, NULL)) < 0 | |
454 | && errno == EBUSY) { | |
455 | usleep(200000); | |
456 | count --; | |
457 | } | |
458 | if (fd >= 0 && err) { | |
459 | if (verbose >= 0) { | |
460 | pr_err("failed to stop array %s: %s\n", | |
461 | devname, strerror(errno)); | |
462 | if (errno == EBUSY) | |
463 | cont_err("Perhaps a running " | |
464 | "process, mounted filesystem " | |
465 | "or active volume group?\n"); | |
4ccad7b1 | 466 | } |
fe7e0e64 N |
467 | rv = 1; |
468 | goto out; | |
469 | } | |
470 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array | |
471 | * was stopped, so We'll do it here just to be sure. Drop any | |
472 | * partitions as well... | |
473 | */ | |
474 | if (fd >= 0) | |
475 | ioctl(fd, BLKRRPART, 0); | |
476 | if (mdi) | |
477 | sysfs_uevent(mdi, "change"); | |
4ccad7b1 | 478 | |
fe7e0e64 N |
479 | if (devnm[0] && use_udev()) { |
480 | struct map_ent *mp = map_by_devnm(&map, devnm); | |
481 | remove_devices(devnm, mp ? mp->path : NULL); | |
682c7051 | 482 | } |
fe7e0e64 N |
483 | |
484 | if (verbose >= 0) | |
485 | pr_err("stopped %s\n", devname); | |
486 | map_lock(&map); | |
487 | map_remove(&map, devnm); | |
488 | map_unlock(&map); | |
489 | out: | |
490 | if (mdi) | |
491 | sysfs_free(mdi); | |
492 | ||
bccd8153 | 493 | return rv; |
64c4757e NB |
494 | } |
495 | ||
5e73b024 N |
496 | static struct mddev_dev *add_one(struct mddev_dev *dv, char *name, char disp) |
497 | { | |
498 | struct mddev_dev *new; | |
499 | new = xmalloc(sizeof(*new)); | |
500 | memset(new, 0, sizeof(*new)); | |
501 | new->devname = xstrdup(name); | |
502 | new->disposition = disp; | |
503 | new->next = dv->next; | |
504 | dv->next = new; | |
505 | return new; | |
506 | } | |
507 | ||
1d997643 N |
508 | static void add_faulty(struct mddev_dev *dv, int fd, char disp) |
509 | { | |
510 | mdu_array_info_t array; | |
511 | mdu_disk_info_t disk; | |
512 | int remaining_disks; | |
513 | int i; | |
514 | ||
515 | if (ioctl(fd, GET_ARRAY_INFO, &array) != 0) | |
516 | return; | |
517 | ||
518 | remaining_disks = array.nr_disks; | |
519 | for (i = 0; i < MAX_DISKS && remaining_disks > 0; i++) { | |
1d997643 N |
520 | char buf[40]; |
521 | disk.number = i; | |
522 | if (ioctl(fd, GET_DISK_INFO, &disk) != 0) | |
523 | continue; | |
524 | if (disk.major == 0 && disk.minor == 0) | |
525 | continue; | |
526 | remaining_disks--; | |
527 | if ((disk.state & 1) == 0) /* not faulty */ | |
528 | continue; | |
529 | sprintf(buf, "%d:%d", disk.major, disk.minor); | |
5e73b024 | 530 | dv = add_one(dv, buf, disp); |
1d997643 N |
531 | } |
532 | } | |
533 | ||
534 | static void add_detached(struct mddev_dev *dv, int fd, char disp) | |
535 | { | |
536 | mdu_array_info_t array; | |
537 | mdu_disk_info_t disk; | |
538 | int remaining_disks; | |
539 | int i; | |
540 | ||
541 | if (ioctl(fd, GET_ARRAY_INFO, &array) != 0) | |
542 | return; | |
543 | ||
544 | remaining_disks = array.nr_disks; | |
545 | for (i = 0; i < MAX_DISKS && remaining_disks > 0; i++) { | |
1d997643 N |
546 | char buf[40]; |
547 | int sfd; | |
548 | disk.number = i; | |
549 | if (ioctl(fd, GET_DISK_INFO, &disk) != 0) | |
550 | continue; | |
551 | if (disk.major == 0 && disk.minor == 0) | |
552 | continue; | |
553 | remaining_disks--; | |
554 | if (disp == 'f' && (disk.state & 1) != 0) /* already faulty */ | |
555 | continue; | |
556 | sprintf(buf, "%d:%d", disk.major, disk.minor); | |
557 | sfd = dev_open(buf, O_RDONLY); | |
558 | if (sfd >= 0) { | |
559 | /* Not detached */ | |
560 | close(sfd); | |
561 | continue; | |
562 | } | |
563 | if (errno != ENXIO) | |
564 | /* Probably not detached */ | |
565 | continue; | |
5e73b024 | 566 | dv = add_one(dv, buf, disp); |
1d997643 N |
567 | } |
568 | } | |
569 | ||
64a78416 N |
570 | static void add_set(struct mddev_dev *dv, int fd, char set_char) |
571 | { | |
572 | mdu_array_info_t array; | |
573 | mdu_disk_info_t disk; | |
574 | int remaining_disks; | |
575 | int copies, set; | |
576 | int i; | |
577 | ||
578 | if (ioctl(fd, GET_ARRAY_INFO, &array) != 0) | |
579 | return; | |
580 | if (array.level != 10) | |
581 | return; | |
582 | copies = ((array.layout & 0xff) * | |
583 | ((array.layout >> 8) & 0xff)); | |
584 | if (array.raid_disks % copies) | |
585 | return; | |
586 | ||
587 | remaining_disks = array.nr_disks; | |
588 | for (i = 0; i < MAX_DISKS && remaining_disks > 0; i++) { | |
589 | char buf[40]; | |
590 | disk.number = i; | |
591 | if (ioctl(fd, GET_DISK_INFO, &disk) != 0) | |
592 | continue; | |
593 | if (disk.major == 0 && disk.minor == 0) | |
594 | continue; | |
595 | remaining_disks--; | |
596 | set = disk.raid_disk % copies; | |
597 | if (set_char != set + 'A') | |
598 | continue; | |
599 | sprintf(buf, "%d:%d", disk.major, disk.minor); | |
600 | dv = add_one(dv, buf, dv->disposition); | |
601 | } | |
602 | } | |
603 | ||
abe94694 N |
604 | int attempt_re_add(int fd, int tfd, struct mddev_dev *dv, |
605 | struct supertype *dev_st, struct supertype *tst, | |
606 | unsigned long rdev, | |
607 | char *update, char *devname, int verbose, | |
608 | mdu_array_info_t *array) | |
609 | { | |
610 | struct mdinfo mdi; | |
611 | int duuid[4]; | |
612 | int ouuid[4]; | |
613 | ||
614 | dev_st->ss->getinfo_super(dev_st, &mdi, NULL); | |
615 | dev_st->ss->uuid_from_super(dev_st, ouuid); | |
616 | if (tst->sb) | |
617 | tst->ss->uuid_from_super(tst, duuid); | |
618 | else | |
619 | /* Assume uuid matches: kernel will check */ | |
620 | memcpy(duuid, ouuid, sizeof(ouuid)); | |
621 | if ((mdi.disk.state & (1<<MD_DISK_ACTIVE)) && | |
622 | !(mdi.disk.state & (1<<MD_DISK_FAULTY)) && | |
623 | memcmp(duuid, ouuid, sizeof(ouuid))==0) { | |
624 | /* Looks like it is worth a | |
625 | * try. Need to make sure | |
626 | * kernel will accept it | |
627 | * though. | |
628 | */ | |
629 | mdu_disk_info_t disc; | |
630 | /* re-add doesn't work for version-1 superblocks | |
631 | * before 2.6.18 :-( | |
632 | */ | |
633 | if (array->major_version == 1 && | |
634 | get_linux_version() <= 2006018) | |
635 | goto skip_re_add; | |
636 | disc.number = mdi.disk.number; | |
637 | if (ioctl(fd, GET_DISK_INFO, &disc) != 0 | |
638 | || disc.major != 0 || disc.minor != 0 | |
639 | ) | |
640 | goto skip_re_add; | |
641 | disc.major = major(rdev); | |
642 | disc.minor = minor(rdev); | |
643 | disc.number = mdi.disk.number; | |
644 | disc.raid_disk = mdi.disk.raid_disk; | |
645 | disc.state = mdi.disk.state; | |
646 | if (dv->writemostly == 1) | |
647 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; | |
648 | if (dv->writemostly == 2) | |
649 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
650 | remove_partitions(tfd); | |
651 | if (update || dv->writemostly > 0) { | |
652 | int rv = -1; | |
653 | tfd = dev_open(dv->devname, O_RDWR); | |
654 | if (tfd < 0) { | |
655 | pr_err("failed to open %s for" | |
656 | " superblock update during re-add\n", dv->devname); | |
657 | return -1; | |
658 | } | |
659 | ||
660 | if (dv->writemostly == 1) | |
661 | rv = dev_st->ss->update_super( | |
662 | dev_st, NULL, "writemostly", | |
663 | devname, verbose, 0, NULL); | |
664 | if (dv->writemostly == 2) | |
665 | rv = dev_st->ss->update_super( | |
666 | dev_st, NULL, "readwrite", | |
667 | devname, verbose, 0, NULL); | |
668 | if (update) | |
669 | rv = dev_st->ss->update_super( | |
670 | dev_st, NULL, update, | |
671 | devname, verbose, 0, NULL); | |
672 | if (rv == 0) | |
673 | rv = dev_st->ss->store_super(dev_st, tfd); | |
674 | close(tfd); | |
675 | if (rv != 0) { | |
676 | pr_err("failed to update" | |
677 | " superblock during re-add\n"); | |
678 | return -1; | |
679 | } | |
680 | } | |
681 | /* don't even try if disk is marked as faulty */ | |
682 | errno = 0; | |
683 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { | |
684 | if (verbose >= 0) | |
685 | pr_err("re-added %s\n", dv->devname); | |
686 | return 1; | |
687 | } | |
688 | if (errno == ENOMEM || errno == EROFS) { | |
689 | pr_err("add new device failed for %s: %s\n", | |
690 | dv->devname, strerror(errno)); | |
691 | if (dv->disposition == 'M') | |
692 | return 0; | |
693 | return -1; | |
694 | } | |
695 | } | |
696 | skip_re_add: | |
697 | return 0; | |
698 | } | |
699 | ||
38aeaf3a N |
700 | int Manage_add(int fd, int tfd, struct mddev_dev *dv, |
701 | struct supertype *tst, mdu_array_info_t *array, | |
702 | int force, int verbose, char *devname, | |
703 | char *update, unsigned long rdev, unsigned long long array_size) | |
704 | { | |
705 | unsigned long long ldsize; | |
6d43efb5 | 706 | struct supertype *dev_st = NULL; |
38aeaf3a N |
707 | int j; |
708 | mdu_disk_info_t disc; | |
709 | ||
710 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { | |
711 | if (dv->disposition == 'M') | |
712 | return 0; | |
713 | else | |
714 | return -1; | |
715 | } | |
716 | ||
632dc30c | 717 | if (tst->ss == &super0 && ldsize > 4ULL*1024*1024*1024*1024) { |
7ccc4cc4 | 718 | /* More than 4TB is wasted on v0.90 */ |
38aeaf3a N |
719 | if (!force) { |
720 | pr_err("%s is larger than %s can " | |
721 | "effectively use.\n" | |
722 | " Add --force is you " | |
723 | "really want to add this device.\n", | |
724 | dv->devname, devname); | |
725 | return -1; | |
726 | } | |
727 | pr_err("%s is larger than %s can " | |
728 | "effectively use.\n" | |
729 | " Adding anyway as --force " | |
730 | "was given.\n", | |
731 | dv->devname, devname); | |
732 | } | |
733 | if (!tst->ss->external && | |
734 | array->major_version == 0 && | |
735 | md_get_version(fd)%100 < 2) { | |
736 | if (ioctl(fd, HOT_ADD_DISK, rdev)==0) { | |
737 | if (verbose >= 0) | |
738 | pr_err("hot added %s\n", | |
739 | dv->devname); | |
740 | return 1; | |
741 | } | |
742 | ||
743 | pr_err("hot add failed for %s: %s\n", | |
744 | dv->devname, strerror(errno)); | |
745 | return -1; | |
746 | } | |
747 | ||
748 | if (array->not_persistent == 0 || tst->ss->external) { | |
749 | ||
750 | /* need to find a sample superblock to copy, and | |
751 | * a spare slot to use. | |
752 | * For 'external' array (well, container based), | |
753 | * We can just load the metadata for the array-> | |
754 | */ | |
755 | int array_failed; | |
756 | if (tst->sb) | |
757 | /* already loaded */; | |
758 | else if (tst->ss->external) { | |
759 | tst->ss->load_container(tst, fd, NULL); | |
760 | } else for (j = 0; j < tst->max_devs; j++) { | |
761 | char *dev; | |
762 | int dfd; | |
763 | disc.number = j; | |
764 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
765 | continue; | |
766 | if (disc.major==0 && disc.minor==0) | |
767 | continue; | |
768 | if ((disc.state & 4)==0) /* sync */ | |
769 | continue; | |
770 | /* Looks like a good device to try */ | |
771 | dev = map_dev(disc.major, disc.minor, 1); | |
772 | if (!dev) | |
773 | continue; | |
774 | dfd = dev_open(dev, O_RDONLY); | |
775 | if (dfd < 0) | |
776 | continue; | |
777 | if (tst->ss->load_super(tst, dfd, | |
778 | NULL)) { | |
779 | close(dfd); | |
780 | continue; | |
781 | } | |
782 | close(dfd); | |
783 | break; | |
784 | } | |
785 | /* FIXME this is a bad test to be using */ | |
f33a71f1 N |
786 | if (!tst->sb && (dv->disposition != 'a' |
787 | && dv->disposition != 'S')) { | |
38aeaf3a N |
788 | /* we are re-adding a device to a |
789 | * completely dead array - have to depend | |
790 | * on kernel to check | |
791 | */ | |
792 | } else if (!tst->sb) { | |
793 | pr_err("cannot load array metadata from %s\n", devname); | |
794 | return -1; | |
795 | } | |
796 | ||
797 | /* Make sure device is large enough */ | |
387fcd59 | 798 | if (tst->ss->avail_size(tst, ldsize/512, INVALID_SECTORS) < |
38aeaf3a N |
799 | array_size) { |
800 | if (dv->disposition == 'M') | |
801 | return 0; | |
802 | pr_err("%s not large enough to join array\n", | |
803 | dv->devname); | |
804 | return -1; | |
805 | } | |
806 | ||
807 | /* Possibly this device was recently part of | |
808 | * the array and was temporarily removed, and | |
809 | * is now being re-added. If so, we can | |
810 | * simply re-add it. | |
811 | */ | |
812 | ||
813 | if (array->not_persistent==0) { | |
814 | dev_st = dup_super(tst); | |
815 | dev_st->ss->load_super(dev_st, tfd, NULL); | |
816 | } | |
f33a71f1 | 817 | if (dev_st && dev_st->sb && dv->disposition != 'S') { |
38aeaf3a N |
818 | int rv = attempt_re_add(fd, tfd, dv, |
819 | dev_st, tst, | |
820 | rdev, | |
821 | update, devname, | |
822 | verbose, | |
823 | array); | |
824 | dev_st->ss->free_super(dev_st); | |
825 | if (rv) | |
826 | return rv; | |
827 | } | |
828 | if (dv->disposition == 'M') { | |
829 | if (verbose > 0) | |
830 | pr_err("--re-add for %s to %s is not possible\n", | |
831 | dv->devname, devname); | |
832 | return 0; | |
833 | } | |
834 | if (dv->disposition == 'A') { | |
835 | pr_err("--re-add for %s to %s is not possible\n", | |
836 | dv->devname, devname); | |
837 | return -1; | |
838 | } | |
839 | if (array->active_disks < array->raid_disks) { | |
840 | char *avail = xcalloc(array->raid_disks, 1); | |
841 | int d; | |
842 | int found = 0; | |
843 | ||
844 | for (d = 0; d < MAX_DISKS && found < array->active_disks; d++) { | |
845 | disc.number = d; | |
846 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
847 | continue; | |
848 | if (disc.major == 0 && disc.minor == 0) | |
849 | continue; | |
5dd29daf | 850 | found++; |
38aeaf3a N |
851 | if (!(disc.state & (1<<MD_DISK_SYNC))) |
852 | continue; | |
853 | avail[disc.raid_disk] = 1; | |
38aeaf3a N |
854 | } |
855 | array_failed = !enough(array->level, array->raid_disks, | |
856 | array->layout, 1, avail); | |
6157951f | 857 | free(avail); |
38aeaf3a N |
858 | } else |
859 | array_failed = 0; | |
860 | if (array_failed) { | |
861 | pr_err("%s has failed so using --add cannot work and might destroy\n", | |
862 | devname); | |
863 | pr_err("data on %s. You should stop the array and re-assemble it.\n", | |
864 | dv->devname); | |
865 | return -1; | |
866 | } | |
867 | } else { | |
868 | /* non-persistent. Must ensure that new drive | |
869 | * is at least array->size big. | |
870 | */ | |
871 | if (ldsize/512 < array_size) { | |
872 | pr_err("%s not large enough to join array\n", | |
873 | dv->devname); | |
874 | return -1; | |
875 | } | |
876 | } | |
877 | /* committed to really trying this device now*/ | |
878 | remove_partitions(tfd); | |
879 | ||
880 | /* in 2.6.17 and earlier, version-1 superblocks won't | |
881 | * use the number we write, but will choose a free number. | |
882 | * we must choose the same free number, which requires | |
883 | * starting at 'raid_disks' and counting up | |
884 | */ | |
885 | for (j = array->raid_disks; j < tst->max_devs; j++) { | |
886 | disc.number = j; | |
887 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
888 | break; | |
889 | if (disc.major==0 && disc.minor==0) | |
890 | break; | |
891 | if (disc.state & 8) /* removed */ | |
892 | break; | |
893 | } | |
894 | disc.major = major(rdev); | |
895 | disc.minor = minor(rdev); | |
896 | disc.number =j; | |
897 | disc.state = 0; | |
898 | if (array->not_persistent==0) { | |
899 | int dfd; | |
900 | if (dv->writemostly == 1) | |
901 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; | |
902 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); | |
903 | if (tst->ss->add_to_super(tst, &disc, dfd, | |
72ca9bcf | 904 | dv->devname, INVALID_SECTORS)) |
38aeaf3a N |
905 | return -1; |
906 | if (tst->ss->write_init_super(tst)) | |
907 | return -1; | |
908 | } else if (dv->disposition == 'A') { | |
909 | /* this had better be raid1. | |
910 | * As we are "--re-add"ing we must find a spare slot | |
911 | * to fill. | |
912 | */ | |
913 | char *used = xcalloc(array->raid_disks, 1); | |
914 | for (j = 0; j < tst->max_devs; j++) { | |
915 | mdu_disk_info_t disc2; | |
916 | disc2.number = j; | |
917 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
918 | continue; | |
919 | if (disc2.major==0 && disc2.minor==0) | |
920 | continue; | |
921 | if (disc2.state & 8) /* removed */ | |
922 | continue; | |
923 | if (disc2.raid_disk < 0) | |
924 | continue; | |
925 | if (disc2.raid_disk > array->raid_disks) | |
926 | continue; | |
927 | used[disc2.raid_disk] = 1; | |
928 | } | |
929 | for (j = 0 ; j < array->raid_disks; j++) | |
930 | if (!used[j]) { | |
931 | disc.raid_disk = j; | |
932 | disc.state |= (1<<MD_DISK_SYNC); | |
933 | break; | |
934 | } | |
935 | free(used); | |
936 | } | |
937 | if (dv->writemostly == 1) | |
938 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); | |
939 | if (tst->ss->external) { | |
940 | /* add a disk | |
941 | * to an external metadata container */ | |
942 | struct mdinfo new_mdi; | |
943 | struct mdinfo *sra; | |
944 | int container_fd; | |
4dd2df09 | 945 | char devnm[32]; |
38aeaf3a N |
946 | int dfd; |
947 | ||
4dd2df09 N |
948 | strcpy(devnm, fd2devnm(fd)); |
949 | ||
950 | container_fd = open_dev_excl(devnm); | |
38aeaf3a N |
951 | if (container_fd < 0) { |
952 | pr_err("add failed for %s:" | |
953 | " could not get exclusive access to container\n", | |
954 | dv->devname); | |
955 | tst->ss->free_super(tst); | |
956 | return -1; | |
957 | } | |
958 | ||
9cf9a1de | 959 | Kill(dv->devname, NULL, 0, -1, 0); |
38aeaf3a | 960 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
4dd2df09 | 961 | if (mdmon_running(tst->container_devnm)) |
38aeaf3a N |
962 | tst->update_tail = &tst->updates; |
963 | if (tst->ss->add_to_super(tst, &disc, dfd, | |
72ca9bcf | 964 | dv->devname, INVALID_SECTORS)) { |
38aeaf3a N |
965 | close(dfd); |
966 | close(container_fd); | |
967 | return -1; | |
968 | } | |
969 | if (tst->update_tail) | |
970 | flush_metadata_updates(tst); | |
971 | else | |
972 | tst->ss->sync_metadata(tst); | |
973 | ||
4dd2df09 | 974 | sra = sysfs_read(container_fd, NULL, 0); |
38aeaf3a N |
975 | if (!sra) { |
976 | pr_err("add failed for %s: sysfs_read failed\n", | |
977 | dv->devname); | |
978 | close(container_fd); | |
979 | tst->ss->free_super(tst); | |
980 | return -1; | |
981 | } | |
982 | sra->array.level = LEVEL_CONTAINER; | |
983 | /* Need to set data_offset and component_size */ | |
984 | tst->ss->getinfo_super(tst, &new_mdi, NULL); | |
985 | new_mdi.disk.major = disc.major; | |
986 | new_mdi.disk.minor = disc.minor; | |
987 | new_mdi.recovery_start = 0; | |
988 | /* Make sure fds are closed as they are O_EXCL which | |
989 | * would block add_disk */ | |
990 | tst->ss->free_super(tst); | |
991 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { | |
992 | pr_err("add new device to external metadata" | |
993 | " failed for %s\n", dv->devname); | |
994 | close(container_fd); | |
995 | sysfs_free(sra); | |
996 | return -1; | |
997 | } | |
4dd2df09 | 998 | ping_monitor(devnm); |
38aeaf3a N |
999 | sysfs_free(sra); |
1000 | close(container_fd); | |
1001 | } else { | |
1002 | tst->ss->free_super(tst); | |
1003 | if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
1004 | pr_err("add new device failed for %s as %d: %s\n", | |
1005 | dv->devname, j, strerror(errno)); | |
1006 | return -1; | |
1007 | } | |
1008 | } | |
1009 | if (verbose >= 0) | |
1010 | pr_err("added %s\n", dv->devname); | |
1011 | return 1; | |
1012 | } | |
1013 | ||
d070235d N |
1014 | int Manage_remove(struct supertype *tst, int fd, struct mddev_dev *dv, |
1015 | int sysfd, unsigned long rdev, int verbose, char *devname) | |
1016 | { | |
1017 | int lfd = -1; | |
1018 | int err; | |
1019 | ||
1020 | if (tst->ss->external) { | |
1021 | /* To remove a device from a container, we must | |
1022 | * check that it isn't in use in an array. | |
1023 | * This involves looking in the 'holders' | |
1024 | * directory - there must be just one entry, | |
1025 | * the container. | |
1026 | * To ensure that it doesn't get used as a | |
1027 | * hot spare while we are checking, we | |
1028 | * get an O_EXCL open on the container | |
1029 | */ | |
aab15415 | 1030 | int ret; |
4dd2df09 N |
1031 | char devnm[32]; |
1032 | strcpy(devnm, fd2devnm(fd)); | |
1033 | lfd = open_dev_excl(devnm); | |
d070235d N |
1034 | if (lfd < 0) { |
1035 | pr_err("Cannot get exclusive access " | |
1036 | " to container - odd\n"); | |
1037 | return -1; | |
1038 | } | |
aab15415 N |
1039 | /* We may not be able to check on holders in |
1040 | * sysfs, either because we don't have the dev num | |
1041 | * (rdev == 0) or because the device has been detached | |
1042 | * and the 'holders' directory no longer exists | |
1043 | * (ret == -1). In that case, assume it is OK to | |
1044 | * remove. | |
d070235d | 1045 | */ |
aab15415 N |
1046 | if (rdev == 0) |
1047 | ret = -1; | |
1048 | else | |
4dd2df09 | 1049 | ret = sysfs_unique_holder(devnm, rdev); |
aab15415 N |
1050 | if (ret == 0) { |
1051 | pr_err("%s is not a member, cannot remove.\n", | |
1052 | dv->devname); | |
1053 | close(lfd); | |
1054 | return -1; | |
1055 | } | |
1056 | if (ret >= 2) { | |
1057 | pr_err("%s is still in use, cannot remove.\n", | |
1058 | dv->devname); | |
d070235d N |
1059 | close(lfd); |
1060 | return -1; | |
1061 | } | |
1062 | } | |
1063 | /* FIXME check that it is a current member */ | |
1064 | if (sysfd >= 0) { | |
1065 | /* device has been removed and we don't know | |
1066 | * the major:minor number | |
1067 | */ | |
1068 | int n = write(sysfd, "remove", 6); | |
1069 | if (n != 6) | |
1070 | err = -1; | |
1071 | else | |
1072 | err = 0; | |
1073 | } else { | |
1074 | err = ioctl(fd, HOT_REMOVE_DISK, rdev); | |
1075 | if (err && errno == ENODEV) { | |
1076 | /* Old kernels rejected this if no personality | |
1077 | * is registered */ | |
4dd2df09 | 1078 | struct mdinfo *sra = sysfs_read(fd, NULL, GET_DEVS); |
d070235d N |
1079 | struct mdinfo *dv = NULL; |
1080 | if (sra) | |
1081 | dv = sra->devs; | |
1082 | for ( ; dv ; dv=dv->next) | |
1083 | if (dv->disk.major == (int)major(rdev) && | |
1084 | dv->disk.minor == (int)minor(rdev)) | |
1085 | break; | |
1086 | if (dv) | |
1087 | err = sysfs_set_str(sra, dv, | |
1088 | "state", "remove"); | |
1089 | else | |
1090 | err = -1; | |
1091 | if (sra) | |
1092 | sysfs_free(sra); | |
1093 | } | |
1094 | } | |
1095 | if (err) { | |
1096 | pr_err("hot remove failed " | |
1097 | "for %s: %s\n", dv->devname, | |
1098 | strerror(errno)); | |
1099 | if (lfd >= 0) | |
1100 | close(lfd); | |
1101 | return -1; | |
1102 | } | |
1103 | if (tst->ss->external) { | |
1104 | /* | |
1105 | * Before dropping our exclusive open we make an | |
1106 | * attempt at preventing mdmon from seeing an | |
1107 | * 'add' event before reconciling this 'remove' | |
1108 | * event. | |
1109 | */ | |
4dd2df09 | 1110 | char *devnm = fd2devnm(fd); |
d070235d | 1111 | |
4dd2df09 | 1112 | if (!devnm) { |
d070235d N |
1113 | pr_err("unable to get container name\n"); |
1114 | return -1; | |
1115 | } | |
1116 | ||
4dd2df09 | 1117 | ping_manager(devnm); |
d070235d N |
1118 | } |
1119 | if (lfd >= 0) | |
1120 | close(lfd); | |
1121 | if (verbose >= 0) | |
1122 | pr_err("hot removed %s from %s\n", | |
1123 | dv->devname, devname); | |
1124 | return 1; | |
1125 | } | |
1126 | ||
70c55e36 N |
1127 | int Manage_replace(struct supertype *tst, int fd, struct mddev_dev *dv, |
1128 | unsigned long rdev, int verbose, char *devname) | |
1129 | { | |
1130 | struct mdinfo *mdi, *di; | |
1131 | if (tst->ss->external) { | |
1132 | pr_err("--replace only supported for native metadata (0.90 or 1.x)\n"); | |
1133 | return -1; | |
1134 | } | |
1135 | /* Need to find the device in sysfs and add 'want_replacement' to the | |
1136 | * status. | |
1137 | */ | |
4dd2df09 | 1138 | mdi = sysfs_read(fd, NULL, GET_DEVS); |
70c55e36 N |
1139 | if (!mdi || !mdi->devs) { |
1140 | pr_err("Cannot find status of %s to enable replacement - strange\n", | |
1141 | devname); | |
1142 | return -1; | |
1143 | } | |
1144 | for (di = mdi->devs; di; di = di->next) | |
1145 | if (di->disk.major == (int)major(rdev) && | |
1146 | di->disk.minor == (int)minor(rdev)) | |
1147 | break; | |
1148 | if (di) { | |
1149 | int rv; | |
1150 | if (di->disk.raid_disk < 0) { | |
1151 | pr_err("%s is not active and so cannot be replaced.\n", | |
1152 | dv->devname); | |
1153 | sysfs_free(mdi); | |
1154 | return -1; | |
1155 | } | |
1156 | rv = sysfs_set_str(mdi, di, | |
1157 | "state", "want_replacement"); | |
1158 | if (rv) { | |
1159 | sysfs_free(mdi); | |
1160 | pr_err("Failed to request replacement for %s\n", | |
1161 | dv->devname); | |
1162 | return -1; | |
1163 | } | |
1164 | if (verbose >= 0) | |
1165 | pr_err("Marked %s (device %d in %s) for replacement\n", | |
1166 | dv->devname, di->disk.raid_disk, devname); | |
1167 | /* If there is a matching 'with', we need to tell it which | |
1168 | * raid disk | |
1169 | */ | |
1170 | while (dv && dv->disposition != 'W') | |
1171 | dv = dv->next; | |
1172 | if (dv) { | |
1173 | dv->disposition = 'w'; | |
1174 | dv->used = di->disk.raid_disk; | |
1175 | } | |
1176 | return 1; | |
1177 | } | |
1178 | sysfs_free(mdi); | |
1179 | pr_err("%s not found in %s so cannot --replace it\n", | |
1180 | dv->devname, devname); | |
1181 | return -1; | |
1182 | } | |
1183 | ||
1184 | int Manage_with(struct supertype *tst, int fd, struct mddev_dev *dv, | |
1185 | unsigned long rdev, int verbose, char *devname) | |
1186 | { | |
1187 | struct mdinfo *mdi, *di; | |
1188 | /* try to set 'slot' for 'rdev' in 'fd' to 'dv->used' */ | |
4dd2df09 | 1189 | mdi = sysfs_read(fd, NULL, GET_DEVS|GET_STATE); |
70c55e36 N |
1190 | if (!mdi || !mdi->devs) { |
1191 | pr_err("Cannot find status of %s to enable replacement - strange\n", | |
1192 | devname); | |
1193 | return -1; | |
1194 | } | |
1195 | for (di = mdi->devs; di; di = di->next) | |
1196 | if (di->disk.major == (int)major(rdev) && | |
1197 | di->disk.minor == (int)minor(rdev)) | |
1198 | break; | |
1199 | if (di) { | |
1200 | int rv; | |
1201 | if (di->disk.state & (1<<MD_DISK_FAULTY)) { | |
1202 | pr_err("%s is faulty and cannot be a replacement\n", | |
1203 | dv->devname); | |
1204 | sysfs_free(mdi); | |
1205 | return -1; | |
1206 | } | |
1207 | if (di->disk.raid_disk >= 0) { | |
1208 | pr_err("%s is active and cannot be a replacement\n", | |
1209 | dv->devname); | |
1210 | sysfs_free(mdi); | |
1211 | return -1; | |
1212 | } | |
1213 | rv = sysfs_set_num(mdi, di, | |
1214 | "slot", dv->used); | |
1215 | if (rv) { | |
1216 | sysfs_free(mdi); | |
51425978 | 1217 | pr_err("Failed to set %s as preferred replacement.\n", |
70c55e36 N |
1218 | dv->devname); |
1219 | return -1; | |
1220 | } | |
1221 | if (verbose >= 0) | |
1222 | pr_err("Marked %s in %s as replacement for device %d\n", | |
1223 | dv->devname, devname, dv->used); | |
1224 | return 1; | |
1225 | } | |
1226 | sysfs_free(mdi); | |
1227 | pr_err("%s not found in %s so cannot make it preferred replacement\n", | |
1228 | dv->devname, devname); | |
1229 | return -1; | |
1230 | } | |
1231 | ||
64c4757e | 1232 | int Manage_subdevs(char *devname, int fd, |
833bb0f8 | 1233 | struct mddev_dev *devlist, int verbose, int test, |
11b391ec | 1234 | char *update, int force) |
cd29a5c8 | 1235 | { |
7bd04da9 | 1236 | /* Do something to each dev. |
682c7051 NB |
1237 | * devmode can be |
1238 | * 'a' - add the device | |
1239 | * try HOT_ADD_DISK | |
1240 | * If that fails EINVAL, try ADD_NEW_DISK | |
f33a71f1 | 1241 | * 'S' - add the device as a spare - don't try re-add |
7bd04da9 N |
1242 | * 'A' - re-add the device |
1243 | * 'r' - remove the device: HOT_REMOVE_DISK | |
b80da661 NB |
1244 | * device can be 'faulty' or 'detached' in which case all |
1245 | * matching devices are removed. | |
682c7051 | 1246 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
1247 | * device can be 'detached' in which case any device that |
1248 | * is inaccessible will be marked faulty. | |
70c55e36 N |
1249 | * 'R' - mark this device as wanting replacement. |
1250 | * 'W' - this device is added if necessary and activated as | |
1251 | * a replacement for a previous 'R' device. | |
1252 | * ----- | |
1253 | * 'w' - 'W' will be changed to 'w' when it is paired with | |
1254 | * a 'R' device. If a 'W' is found while walking the list | |
1255 | * it must be unpaired, and is an error. | |
1256 | * 'M' - this is created by a 'missing' target. It is a slight | |
1257 | * variant on 'A' | |
262e3b7f N |
1258 | * 'F' - Another variant of 'A', where the device was faulty |
1259 | * so must be removed from the array first. | |
70c55e36 | 1260 | * |
98d27e39 N |
1261 | * For 'f' and 'r', the device can also be a kernel-internal |
1262 | * name such as 'sdb'. | |
682c7051 NB |
1263 | */ |
1264 | mdu_array_info_t array; | |
7a3be72f | 1265 | unsigned long long array_size; |
1d997643 | 1266 | struct mddev_dev *dv; |
cfad27a9 | 1267 | int tfd = -1; |
38aeaf3a | 1268 | struct supertype *tst; |
4725bc31 | 1269 | char *subarray = NULL; |
98d27e39 | 1270 | int sysfd = -1; |
7d2e6486 | 1271 | int count = 0; /* number of actions taken */ |
9f584691 N |
1272 | struct mdinfo info; |
1273 | int frozen = 0; | |
8af530b0 | 1274 | int busy = 0; |
682c7051 NB |
1275 | |
1276 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
7bd04da9 | 1277 | pr_err("Cannot get array info for %s\n", |
682c7051 | 1278 | devname); |
bcbb3112 | 1279 | goto abort; |
682c7051 | 1280 | } |
4dd2df09 | 1281 | sysfs_init(&info, fd, NULL); |
3da92f27 | 1282 | |
7bd04da9 | 1283 | /* array.size is only 32 bits and may be truncated. |
7a3be72f NB |
1284 | * So read from sysfs if possible, and record number of sectors |
1285 | */ | |
1286 | ||
1287 | array_size = get_component_size(fd); | |
1288 | if (array_size <= 0) | |
1289 | array_size = array.size * 2; | |
1290 | ||
4725bc31 | 1291 | tst = super_by_fd(fd, &subarray); |
3da92f27 | 1292 | if (!tst) { |
e7b84f9d | 1293 | pr_err("unsupport array - version %d.%d\n", |
3da92f27 | 1294 | array.major_version, array.minor_version); |
bcbb3112 | 1295 | goto abort; |
3da92f27 NB |
1296 | } |
1297 | ||
38aeaf3a | 1298 | for (dv = devlist; dv; dv = dv->next) { |
5dffd09d | 1299 | unsigned long rdev = 0; /* device to add/remove etc */ |
38aeaf3a | 1300 | int rv; |
b47024f1 | 1301 | int mj,mn; |
4a39c6f2 | 1302 | |
1d997643 N |
1303 | if (strcmp(dv->devname, "failed") == 0 || |
1304 | strcmp(dv->devname, "faulty") == 0) { | |
262e3b7f N |
1305 | if (dv->disposition != 'A' |
1306 | && dv->disposition != 'r') { | |
e7b84f9d | 1307 | pr_err("%s only meaningful " |
262e3b7f | 1308 | "with -r or --re-add, not -%c\n", |
b80da661 | 1309 | dv->devname, dv->disposition); |
bcbb3112 | 1310 | goto abort; |
b80da661 | 1311 | } |
262e3b7f N |
1312 | add_faulty(dv, fd, (dv->disposition == 'A' |
1313 | ? 'F' : 'r')); | |
1d997643 N |
1314 | continue; |
1315 | } | |
1316 | if (strcmp(dv->devname, "detached") == 0) { | |
b80da661 | 1317 | if (dv->disposition != 'r' && dv->disposition != 'f') { |
e7b84f9d | 1318 | pr_err("%s only meaningful " |
b80da661 NB |
1319 | "with -r of -f, not -%c\n", |
1320 | dv->devname, dv->disposition); | |
bcbb3112 | 1321 | goto abort; |
b80da661 | 1322 | } |
1d997643 N |
1323 | add_detached(dv, fd, dv->disposition); |
1324 | continue; | |
1325 | } | |
1326 | ||
1327 | if (strcmp(dv->devname, "missing") == 0) { | |
1328 | struct mddev_dev *add_devlist = NULL; | |
1329 | struct mddev_dev **dp; | |
c8e1a230 | 1330 | if (dv->disposition != 'A') { |
e7b84f9d | 1331 | pr_err("'missing' only meaningful " |
aab15415 | 1332 | "with --re-add\n"); |
bcbb3112 | 1333 | goto abort; |
a4e13010 | 1334 | } |
1d997643 | 1335 | add_devlist = conf_get_devs(); |
a4e13010 | 1336 | if (add_devlist == NULL) { |
e7b84f9d | 1337 | pr_err("no devices to scan for missing members."); |
a4e13010 N |
1338 | continue; |
1339 | } | |
1d997643 | 1340 | for (dp = &add_devlist; *dp; dp = & (*dp)->next) |
7bd04da9 | 1341 | /* 'M' (for 'missing') is like 'A' without errors */ |
1d997643 N |
1342 | (*dp)->disposition = 'M'; |
1343 | *dp = dv->next; | |
1344 | dv->next = add_devlist; | |
1345 | continue; | |
1346 | } | |
1347 | ||
64a78416 N |
1348 | if (strncmp(dv->devname, "set-", 4) == 0 && |
1349 | strlen(dv->devname) == 5) { | |
1350 | int copies; | |
1351 | ||
1352 | if (dv->disposition != 'r' && | |
1353 | dv->disposition != 'f') { | |
1354 | pr_err("'%s' only meaningful with -r or -f\n", | |
1355 | dv->devname); | |
1356 | goto abort; | |
1357 | } | |
1358 | if (array.level != 10) { | |
1359 | pr_err("'%s' only meaningful with RAID10 arrays\n", | |
1360 | dv->devname); | |
1361 | goto abort; | |
1362 | } | |
1363 | copies = ((array.layout & 0xff) * | |
1364 | ((array.layout >> 8) & 0xff)); | |
1365 | if (array.raid_disks % copies != 0 || | |
1366 | dv->devname[4] < 'A' || | |
1367 | dv->devname[4] >= 'A' + copies || | |
1368 | copies > 26) { | |
1369 | pr_err("'%s' not meaningful with this array\n", | |
1370 | dv->devname); | |
1371 | goto abort; | |
1372 | } | |
1373 | add_set(dv, fd, dv->devname[4]); | |
1374 | continue; | |
1375 | } | |
1376 | ||
1d997643 | 1377 | if (strchr(dv->devname, '/') == NULL && |
aab15415 N |
1378 | strchr(dv->devname, ':') == NULL && |
1379 | strlen(dv->devname) < 50) { | |
98d27e39 N |
1380 | /* Assume this is a kernel-internal name like 'sda1' */ |
1381 | int found = 0; | |
1382 | char dname[55]; | |
1383 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
e7b84f9d | 1384 | pr_err("%s only meaningful " |
cfad27a9 | 1385 | "with -r or -f, not -%c\n", |
98d27e39 | 1386 | dv->devname, dv->disposition); |
bcbb3112 | 1387 | goto abort; |
98d27e39 N |
1388 | } |
1389 | ||
1390 | sprintf(dname, "dev-%s", dv->devname); | |
4dd2df09 | 1391 | sysfd = sysfs_open(fd2devnm(fd), dname, "block/dev"); |
98d27e39 N |
1392 | if (sysfd >= 0) { |
1393 | char dn[20]; | |
98d27e39 N |
1394 | if (sysfs_fd_get_str(sysfd, dn, 20) > 0 && |
1395 | sscanf(dn, "%d:%d", &mj,&mn) == 2) { | |
5dffd09d | 1396 | rdev = makedev(mj,mn); |
98d27e39 N |
1397 | found = 1; |
1398 | } | |
1399 | close(sysfd); | |
1400 | sysfd = -1; | |
1401 | } | |
1402 | if (!found) { | |
4dd2df09 | 1403 | sysfd = sysfs_open(fd2devnm(fd), dname, "state"); |
98d27e39 | 1404 | if (sysfd < 0) { |
e7b84f9d | 1405 | pr_err("%s does not appear " |
98d27e39 N |
1406 | "to be a component of %s\n", |
1407 | dv->devname, devname); | |
bcbb3112 | 1408 | goto abort; |
98d27e39 N |
1409 | } |
1410 | } | |
b47024f1 N |
1411 | } else if ((dv->disposition == 'r' || dv->disposition == 'f') |
1412 | && get_maj_min(dv->devname, &mj, &mn)) { | |
1413 | /* for 'fail' and 'remove', the device might | |
1414 | * not exist. | |
1415 | */ | |
1416 | rdev = makedev(mj, mn); | |
b80da661 | 1417 | } else { |
5dffd09d | 1418 | struct stat stb; |
c7b47447 | 1419 | tfd = dev_open(dv->devname, O_RDONLY); |
5fe7f5f7 N |
1420 | if (tfd >= 0) |
1421 | fstat(tfd, &stb); | |
5a9de8db | 1422 | else { |
5fe7f5f7 N |
1423 | int open_err = errno; |
1424 | if (stat(dv->devname, &stb) != 0) { | |
1425 | pr_err("Cannot find %s: %s\n", | |
1426 | dv->devname, strerror(errno)); | |
1427 | goto abort; | |
1428 | } | |
1429 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
1430 | if (dv->disposition == 'M') | |
1431 | /* non-fatal. Also improbable */ | |
1432 | continue; | |
1433 | pr_err("%s is not a block device.\n", | |
1434 | dv->devname); | |
1435 | goto abort; | |
1436 | } | |
1437 | if (dv->disposition == 'r') | |
1438 | /* Be happy, the stat worked, that is | |
1439 | * enough for --remove | |
1440 | */ | |
1441 | ; | |
1442 | else { | |
1d997643 N |
1443 | if (dv->disposition == 'M') |
1444 | /* non-fatal */ | |
1445 | continue; | |
839f27a3 | 1446 | pr_err("Cannot open %s: %s\n", |
5fe7f5f7 | 1447 | dv->devname, strerror(open_err)); |
bcbb3112 | 1448 | goto abort; |
5a9de8db | 1449 | } |
b80da661 | 1450 | } |
5dffd09d | 1451 | rdev = stb.st_rdev; |
682c7051 | 1452 | } |
cd29a5c8 | 1453 | switch(dv->disposition){ |
682c7051 | 1454 | default: |
e7b84f9d | 1455 | pr_err("internal error - devmode[%s]=%d\n", |
c913b90e | 1456 | dv->devname, dv->disposition); |
bcbb3112 | 1457 | goto abort; |
682c7051 | 1458 | case 'a': |
f33a71f1 | 1459 | case 'S': /* --add-spare */ |
c8e1a230 | 1460 | case 'A': |
262e3b7f N |
1461 | case 'M': /* --re-add missing */ |
1462 | case 'F': /* --re-add faulty */ | |
4a39c6f2 | 1463 | /* add the device */ |
4725bc31 | 1464 | if (subarray) { |
e7b84f9d | 1465 | pr_err("Cannot add disks to a" |
f7dd881f DW |
1466 | " \'member\' array, perform this" |
1467 | " operation on the parent container\n"); | |
bcbb3112 | 1468 | goto abort; |
f94d52f4 | 1469 | } |
262e3b7f N |
1470 | if (dv->disposition == 'F') |
1471 | /* Need to remove first */ | |
5dffd09d | 1472 | ioctl(fd, HOT_REMOVE_DISK, rdev); |
f277ce36 | 1473 | /* Make sure it isn't in use (in 2.6 or later) */ |
1d997643 | 1474 | tfd = dev_open(dv->devname, O_RDONLY|O_EXCL); |
38aeaf3a N |
1475 | if (tfd >= 0) { |
1476 | /* We know no-one else is using it. We'll | |
1477 | * need non-exclusive access to add it, so | |
1478 | * do that now. | |
1479 | */ | |
1480 | close(tfd); | |
1481 | tfd = dev_open(dv->devname, O_RDONLY); | |
1011e834 | 1482 | } |
0fbf459d | 1483 | if (tfd < 0) { |
1d997643 N |
1484 | if (dv->disposition == 'M') |
1485 | continue; | |
e7b84f9d | 1486 | pr_err("Cannot open %s: %s\n", |
d7eaf49f | 1487 | dv->devname, strerror(errno)); |
bcbb3112 | 1488 | goto abort; |
d7eaf49f | 1489 | } |
9f584691 N |
1490 | if (!frozen) { |
1491 | if (sysfs_freeze_array(&info) == 1) | |
1492 | frozen = 1; | |
1493 | else | |
1494 | frozen = -1; | |
1495 | } | |
38aeaf3a N |
1496 | rv = Manage_add(fd, tfd, dv, tst, &array, |
1497 | force, verbose, devname, update, | |
5dffd09d | 1498 | rdev, array_size); |
38aeaf3a N |
1499 | close(tfd); |
1500 | tfd = -1; | |
1501 | if (rv < 0) | |
bcbb3112 | 1502 | goto abort; |
38aeaf3a N |
1503 | if (rv > 0) |
1504 | count++; | |
682c7051 NB |
1505 | break; |
1506 | ||
1507 | case 'r': | |
1508 | /* hot remove */ | |
4725bc31 | 1509 | if (subarray) { |
e7b84f9d | 1510 | pr_err("Cannot remove disks from a" |
f7dd881f DW |
1511 | " \'member\' array, perform this" |
1512 | " operation on the parent container\n"); | |
d070235d N |
1513 | rv = -1; |
1514 | } else | |
1515 | rv = Manage_remove(tst, fd, dv, sysfd, | |
5dffd09d | 1516 | rdev, verbose, |
d070235d N |
1517 | devname); |
1518 | if (sysfd >= 0) | |
98d27e39 | 1519 | close(sysfd); |
d070235d N |
1520 | sysfd = -1; |
1521 | if (rv < 0) | |
bcbb3112 | 1522 | goto abort; |
d070235d N |
1523 | if (rv > 0) |
1524 | count++; | |
682c7051 NB |
1525 | break; |
1526 | ||
1527 | case 'f': /* set faulty */ | |
1528 | /* FIXME check current member */ | |
98d27e39 N |
1529 | if ((sysfd >= 0 && write(sysfd, "faulty", 6) != 6) || |
1530 | (sysfd < 0 && ioctl(fd, SET_DISK_FAULTY, | |
5dffd09d | 1531 | rdev))) { |
8af530b0 N |
1532 | if (errno == EBUSY) |
1533 | busy = 1; | |
e7b84f9d | 1534 | pr_err("set device faulty failed for %s: %s\n", |
1d997643 | 1535 | dv->devname, strerror(errno)); |
98d27e39 N |
1536 | if (sysfd >= 0) |
1537 | close(sysfd); | |
bcbb3112 | 1538 | goto abort; |
682c7051 | 1539 | } |
98d27e39 N |
1540 | if (sysfd >= 0) |
1541 | close(sysfd); | |
1542 | sysfd = -1; | |
7d2e6486 | 1543 | count++; |
dab6685f | 1544 | if (verbose >= 0) |
e7b84f9d | 1545 | pr_err("set %s faulty in %s\n", |
1d997643 | 1546 | dv->devname, devname); |
682c7051 | 1547 | break; |
70c55e36 N |
1548 | case 'R': /* Mark as replaceable */ |
1549 | if (subarray) { | |
1550 | pr_err("Cannot replace disks in a" | |
1551 | " \'member\' array, perform this" | |
1552 | " operation on the parent container\n"); | |
1553 | rv = -1; | |
1554 | } else { | |
1555 | if (!frozen) { | |
1556 | if (sysfs_freeze_array(&info) == 1) | |
1557 | frozen = 1; | |
1558 | else | |
1559 | frozen = -1; | |
1560 | } | |
1561 | rv = Manage_replace(tst, fd, dv, | |
5dffd09d | 1562 | rdev, verbose, |
70c55e36 N |
1563 | devname); |
1564 | } | |
1565 | if (rv < 0) | |
1566 | goto abort; | |
1567 | if (rv > 0) | |
1568 | count++; | |
1569 | break; | |
1570 | case 'W': /* --with device that doesn't match */ | |
1571 | pr_err("No matching --replace device for --with %s\n", | |
1572 | dv->devname); | |
1573 | goto abort; | |
1574 | case 'w': /* --with device which was matched */ | |
1575 | rv = Manage_with(tst, fd, dv, | |
5dffd09d | 1576 | rdev, verbose, devname); |
70c55e36 N |
1577 | if (rv < 0) |
1578 | goto abort; | |
1579 | break; | |
682c7051 NB |
1580 | } |
1581 | } | |
9f584691 N |
1582 | if (frozen > 0) |
1583 | sysfs_set_str(&info, NULL, "sync_action","idle"); | |
7d2e6486 N |
1584 | if (test && count == 0) |
1585 | return 2; | |
682c7051 | 1586 | return 0; |
bcbb3112 N |
1587 | |
1588 | abort: | |
9f584691 N |
1589 | if (frozen > 0) |
1590 | sysfs_set_str(&info, NULL, "sync_action","idle"); | |
8af530b0 | 1591 | return !test && busy ? 2 : 1; |
64c4757e | 1592 | } |
1f48664b NB |
1593 | |
1594 | int autodetect(void) | |
1595 | { | |
1596 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
1597 | int rv = 1; | |
1598 | int fd = dev_open("9:0", O_RDONLY); | |
1599 | if (fd >= 0) { | |
1600 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
1601 | rv = 0; | |
1602 | close(fd); | |
1603 | } | |
1604 | return rv; | |
1605 | } | |
aa534678 | 1606 | |
ba728be7 | 1607 | int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident *ident, int verbose) |
aa534678 DW |
1608 | { |
1609 | struct supertype supertype, *st = &supertype; | |
1610 | int fd, rv = 2; | |
1611 | ||
1612 | memset(st, 0, sizeof(*st)); | |
aa534678 | 1613 | |
ba728be7 | 1614 | fd = open_subarray(dev, subarray, st, verbose < 0); |
aa534678 DW |
1615 | if (fd < 0) |
1616 | return 2; | |
1617 | ||
1618 | if (!st->ss->update_subarray) { | |
ba728be7 | 1619 | if (verbose >= 0) |
e7b84f9d N |
1620 | pr_err("Operation not supported for %s metadata\n", |
1621 | st->ss->name); | |
aa534678 DW |
1622 | goto free_super; |
1623 | } | |
1624 | ||
4dd2df09 | 1625 | if (mdmon_running(st->devnm)) |
aa534678 DW |
1626 | st->update_tail = &st->updates; |
1627 | ||
a951a4f7 | 1628 | rv = st->ss->update_subarray(st, subarray, update, ident); |
aa534678 DW |
1629 | |
1630 | if (rv) { | |
ba728be7 | 1631 | if (verbose >= 0) |
e7b84f9d | 1632 | pr_err("Failed to update %s of subarray-%s in %s\n", |
aa534678 DW |
1633 | update, subarray, dev); |
1634 | } else if (st->update_tail) | |
1635 | flush_metadata_updates(st); | |
1636 | else | |
1637 | st->ss->sync_metadata(st); | |
1638 | ||
ba728be7 | 1639 | if (rv == 0 && strcmp(update, "name") == 0 && verbose >= 0) |
e7b84f9d N |
1640 | pr_err("Updated subarray-%s name from %s, UUIDs may have changed\n", |
1641 | subarray, dev); | |
aa534678 DW |
1642 | |
1643 | free_super: | |
1644 | st->ss->free_super(st); | |
1645 | close(fd); | |
1646 | ||
1647 | return rv; | |
1648 | } | |
d52bb542 | 1649 | |
7bd04da9 N |
1650 | /* Move spare from one array to another If adding to destination array fails |
1651 | * add back to original array. | |
d52bb542 AC |
1652 | * Returns 1 on success, 0 on failure */ |
1653 | int move_spare(char *from_devname, char *to_devname, dev_t devid) | |
1654 | { | |
1655 | struct mddev_dev devlist; | |
1656 | char devname[20]; | |
1657 | ||
1658 | /* try to remove and add */ | |
1659 | int fd1 = open(to_devname, O_RDONLY); | |
1660 | int fd2 = open(from_devname, O_RDONLY); | |
1661 | ||
1662 | if (fd1 < 0 || fd2 < 0) { | |
1663 | if (fd1>=0) close(fd1); | |
1664 | if (fd2>=0) close(fd2); | |
1665 | return 0; | |
1666 | } | |
1667 | ||
1668 | devlist.next = NULL; | |
1669 | devlist.used = 0; | |
d52bb542 AC |
1670 | devlist.writemostly = 0; |
1671 | devlist.devname = devname; | |
1672 | sprintf(devname, "%d:%d", major(devid), minor(devid)); | |
1673 | ||
1674 | devlist.disposition = 'r'; | |
11b391ec | 1675 | if (Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 | 1676 | devlist.disposition = 'a'; |
11b391ec | 1677 | if (Manage_subdevs(to_devname, fd1, &devlist, -1, 0, NULL, 0) == 0) { |
d52bb542 AC |
1678 | /* make sure manager is aware of changes */ |
1679 | ping_manager(to_devname); | |
1680 | ping_manager(from_devname); | |
1681 | close(fd1); | |
1682 | close(fd2); | |
1683 | return 1; | |
1684 | } | |
11b391ec | 1685 | else Manage_subdevs(from_devname, fd2, &devlist, -1, 0, NULL, 0); |
d52bb542 AC |
1686 | } |
1687 | close(fd1); | |
1688 | close(fd2); | |
1689 | return 0; | |
1690 | } | |
435d4ebb | 1691 | #endif |