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Commit | Line | Data |
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64c4757e | 1 | /* |
9a9dab36 | 2 | * mdadm - manage Linux "md" devices aka RAID arrays. |
64c4757e | 3 | * |
e736b623 | 4 | * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de> |
64c4757e NB |
5 | * |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
e736b623 | 22 | * Email: <neilb@suse.de> |
64c4757e NB |
23 | */ |
24 | ||
9a9dab36 | 25 | #include "mdadm.h" |
682c7051 NB |
26 | #include "md_u.h" |
27 | #include "md_p.h" | |
4ccad7b1 | 28 | #include <ctype.h> |
64c4757e | 29 | |
82b27616 NB |
30 | #define REGISTER_DEV _IO (MD_MAJOR, 1) |
31 | #define START_MD _IO (MD_MAJOR, 2) | |
32 | #define STOP_MD _IO (MD_MAJOR, 3) | |
33 | ||
64c4757e NB |
34 | int Manage_ro(char *devname, int fd, int readonly) |
35 | { | |
682c7051 NB |
36 | /* switch to readonly or rw |
37 | * | |
38 | * requires >= 0.90.0 | |
39 | * first check that array is runing | |
40 | * use RESTART_ARRAY_RW or STOP_ARRAY_RO | |
41 | * | |
42 | */ | |
43 | mdu_array_info_t array; | |
0e600426 | 44 | #ifndef MDASSEMBLE |
e9dd1598 | 45 | struct mdinfo *mdi; |
0e600426 | 46 | #endif |
aba69144 | 47 | |
682c7051 NB |
48 | if (md_get_version(fd) < 9000) { |
49 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
50 | return 1; | |
51 | } | |
0e600426 | 52 | #ifndef MDASSEMBLE |
e9dd1598 N |
53 | /* If this is an externally-manage array, we need to modify the |
54 | * metadata_version so that mdmon doesn't undo our change. | |
55 | */ | |
56 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); | |
57 | if (mdi && | |
58 | mdi->array.major_version == -1 && | |
59 | mdi->array.level > 0 && | |
60 | is_subarray(mdi->text_version)) { | |
61 | char vers[64]; | |
62 | strcpy(vers, "external:"); | |
63 | strcat(vers, mdi->text_version); | |
64 | if (readonly > 0) { | |
65 | int rv; | |
66 | /* We set readonly ourselves. */ | |
67 | vers[9] = '-'; | |
68 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
69 | ||
70 | close(fd); | |
71 | rv = sysfs_set_str(mdi, NULL, "array_state", "readonly"); | |
72 | ||
73 | if (rv < 0) { | |
74 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
75 | devname, strerror(errno)); | |
76 | ||
77 | vers[9] = mdi->text_version[0]; | |
78 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
79 | return 1; | |
80 | } | |
81 | } else { | |
82 | char *cp; | |
83 | /* We cannot set read/write - must signal mdmon */ | |
84 | vers[9] = '/'; | |
85 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
86 | ||
87 | cp = strchr(vers+10, '/'); | |
88 | if (*cp) | |
89 | *cp = 0; | |
90 | ping_monitor(vers+10); | |
91 | } | |
92 | return 0; | |
93 | } | |
0e600426 | 94 | #endif |
682c7051 NB |
95 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
96 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
97 | devname); | |
98 | return 1; | |
99 | } | |
aba69144 | 100 | |
682c7051 NB |
101 | if (readonly>0) { |
102 | if (ioctl(fd, STOP_ARRAY_RO, NULL)) { | |
103 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
104 | devname, strerror(errno)); | |
105 | return 1; | |
106 | } | |
107 | } else if (readonly < 0) { | |
108 | if (ioctl(fd, RESTART_ARRAY_RW, NULL)) { | |
82b27616 | 109 | fprintf(stderr, Name ": failed to set writable for %s: %s\n", |
682c7051 NB |
110 | devname, strerror(errno)); |
111 | return 1; | |
112 | } | |
113 | } | |
aba69144 | 114 | return 0; |
64c4757e NB |
115 | } |
116 | ||
435d4ebb LB |
117 | #ifndef MDASSEMBLE |
118 | ||
4ccad7b1 N |
119 | static void remove_devices(int devnum, char *path) |
120 | { | |
121 | /* Remove all 'standard' devices for 'devnum', including | |
122 | * partitions. Also remove names at 'path' - possibly with | |
123 | * partition suffixes - which link to those names. | |
124 | */ | |
125 | char base[40]; | |
126 | char *path2; | |
127 | char link[1024]; | |
128 | int n; | |
129 | int part; | |
130 | char *be; | |
131 | char *pe; | |
132 | ||
133 | if (devnum >= 0) | |
134 | sprintf(base, "/dev/md%d", devnum); | |
135 | else | |
136 | sprintf(base, "/dev/md_d%d", -1-devnum); | |
137 | be = base + strlen(base); | |
138 | if (path) { | |
139 | path2 = malloc(strlen(path)+20); | |
140 | strcpy(path2, path); | |
141 | pe = path2 + strlen(path2); | |
142 | } else | |
0eb26465 | 143 | path2 = path = NULL; |
4ccad7b1 N |
144 | |
145 | for (part = 0; part < 16; part++) { | |
146 | if (part) { | |
147 | sprintf(be, "p%d", part); | |
ef70b9f4 DW |
148 | if (path) { |
149 | if (isdigit(pe[-1])) | |
150 | sprintf(pe, "p%d", part); | |
151 | else | |
152 | sprintf(pe, "%d", part); | |
153 | } | |
4ccad7b1 N |
154 | } |
155 | /* FIXME test if really is md device ?? */ | |
156 | unlink(base); | |
157 | if (path) { | |
158 | n = readlink(path2, link, sizeof(link)); | |
159 | if (n && strlen(base) == n && | |
160 | strncmp(link, base, n) == 0) | |
161 | unlink(path2); | |
162 | } | |
163 | } | |
0eb26465 | 164 | free(path2); |
4ccad7b1 N |
165 | } |
166 | ||
167 | ||
91f068bf | 168 | int Manage_runstop(char *devname, int fd, int runstop, int quiet) |
64c4757e | 169 | { |
682c7051 NB |
170 | /* Run or stop the array. array must already be configured |
171 | * required >= 0.90.0 | |
4b9d39fc N |
172 | * Only print failure messages if quiet == 0; |
173 | * quiet > 0 means really be quiet | |
174 | * quiet < 0 means we will try again if it fails. | |
682c7051 | 175 | */ |
682c7051 | 176 | mdu_param_t param; /* unused */ |
82b27616 NB |
177 | |
178 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
179 | if (ioctl(fd, STOP_MD, 0)) { | |
4b9d39fc N |
180 | if (quiet == 0) fprintf(stderr, |
181 | Name ": stopping device %s " | |
182 | "failed: %s\n", | |
183 | devname, strerror(errno)); | |
82b27616 NB |
184 | return 1; |
185 | } | |
186 | } | |
aba69144 | 187 | |
682c7051 NB |
188 | if (md_get_version(fd) < 9000) { |
189 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
190 | return 1; | |
191 | } | |
82b27616 | 192 | /* |
682c7051 NB |
193 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
194 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
195 | devname); | |
196 | return 1; | |
197 | } | |
82b27616 | 198 | */ |
682c7051 NB |
199 | if (runstop>0) { |
200 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
201 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
202 | devname, strerror(errno)); | |
203 | return 1; | |
204 | } | |
8382f19b NB |
205 | if (quiet <= 0) |
206 | fprintf(stderr, Name ": started %s\n", devname); | |
682c7051 | 207 | } else if (runstop < 0){ |
8382f19b NB |
208 | struct map_ent *map = NULL; |
209 | struct stat stb; | |
daf7a3ce | 210 | struct mdinfo *mdi; |
4ccad7b1 | 211 | int devnum; |
daf7a3ce NB |
212 | /* If this is an mdmon managed array, just write 'inactive' |
213 | * to the array state and let mdmon clear up. | |
214 | */ | |
4ccad7b1 | 215 | devnum = fd2devnum(fd); |
daf7a3ce NB |
216 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); |
217 | if (mdi && | |
218 | mdi->array.level > 0 && | |
3c558363 | 219 | is_subarray(mdi->text_version)) { |
daf7a3ce NB |
220 | /* This is mdmon managed. */ |
221 | close(fd); | |
222 | if (sysfs_set_str(mdi, NULL, | |
223 | "array_state", "inactive") < 0) { | |
4b9d39fc | 224 | if (quiet == 0) |
daf7a3ce | 225 | fprintf(stderr, Name |
4b9d39fc | 226 | ": failed to stop array %s: %s\n", |
daf7a3ce NB |
227 | devname, strerror(errno)); |
228 | return 1; | |
229 | } | |
230 | ||
231 | /* Give monitor a chance to act */ | |
c94709e8 | 232 | ping_monitor(mdi->text_version); |
daf7a3ce NB |
233 | |
234 | fd = open(devname, O_RDONLY); | |
ada6c239 N |
235 | } else if (mdi && |
236 | mdi->array.major_version == -1 && | |
237 | mdi->array.minor_version == -2 && | |
3c558363 | 238 | !is_subarray(mdi->text_version)) { |
430ea469 | 239 | struct mdstat_ent *mds, *m; |
ada6c239 N |
240 | /* container, possibly mdmon-managed. |
241 | * Make sure mdmon isn't opening it, which | |
242 | * would interfere with the 'stop' | |
243 | */ | |
244 | ping_monitor(mdi->sys_name); | |
430ea469 N |
245 | |
246 | /* now check that there are no existing arrays | |
247 | * which are members of this array | |
248 | */ | |
249 | mds = mdstat_read(0, 0); | |
250 | for (m=mds; m; m=m->next) | |
251 | if (m->metadata_version && | |
252 | strncmp(m->metadata_version, "external:", 9)==0 && | |
253 | is_subarray(m->metadata_version+9) && | |
254 | devname2devnum(m->metadata_version+10) == devnum) { | |
255 | if (!quiet) | |
256 | fprintf(stderr, Name | |
257 | ": Cannot stop container %s: " | |
258 | "member %s still active\n", | |
259 | devname, m->dev); | |
260 | free_mdstat(mds); | |
261 | if (mdi) | |
262 | sysfs_free(mdi); | |
263 | return 1; | |
264 | } | |
daf7a3ce | 265 | } |
daf7a3ce NB |
266 | |
267 | if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) { | |
37ea3936 | 268 | if (quiet == 0) { |
daf7a3ce | 269 | fprintf(stderr, Name |
4b9d39fc | 270 | ": failed to stop array %s: %s\n", |
91f068bf | 271 | devname, strerror(errno)); |
d927f3c4 NB |
272 | if (errno == EBUSY) |
273 | fprintf(stderr, "Perhaps a running " | |
274 | "process, mounted filesystem " | |
275 | "or active volume group?\n"); | |
276 | } | |
97590376 N |
277 | if (mdi) |
278 | sysfs_free(mdi); | |
682c7051 NB |
279 | return 1; |
280 | } | |
97590376 | 281 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array |
d49410d3 N |
282 | * was stopped, so We'll do it here just to be sure. Drop any |
283 | * partitions as well... | |
97590376 | 284 | */ |
d49410d3 N |
285 | if (fd >= 0) |
286 | ioctl(fd, BLKRRPART, 0); | |
97590376 N |
287 | if (mdi) |
288 | sysfs_uevent(mdi, "change"); | |
daf7a3ce | 289 | |
4ccad7b1 N |
290 | |
291 | if (devnum != NoMdDev && | |
292 | (stat("/dev/.udev", &stb) != 0 || | |
293 | check_env("MDADM_NO_UDEV"))) { | |
294 | struct map_ent *mp = map_by_devnum(&map, devnum); | |
295 | remove_devices(devnum, mp ? mp->path : NULL); | |
296 | } | |
297 | ||
298 | ||
ab56093f NB |
299 | if (quiet <= 0) |
300 | fprintf(stderr, Name ": stopped %s\n", devname); | |
4eb26970 DW |
301 | map_lock(&map); |
302 | map_remove(&map, devnum); | |
303 | map_unlock(&map); | |
682c7051 NB |
304 | } |
305 | return 0; | |
64c4757e NB |
306 | } |
307 | ||
dd0781e5 NB |
308 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
309 | { | |
310 | mdu_array_info_t info; | |
311 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
312 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
313 | devname, strerror(errno)); | |
314 | return 1; | |
315 | } | |
316 | if (size >= 0) | |
317 | info.size = size; | |
318 | if (raid_disks > 0) | |
319 | info.raid_disks = raid_disks; | |
320 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
321 | fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n", | |
322 | devname, strerror(errno)); | |
323 | return 1; | |
324 | } | |
325 | return 0; | |
b5e64645 | 326 | } |
dd0781e5 | 327 | |
64c4757e | 328 | int Manage_subdevs(char *devname, int fd, |
7d2e6486 | 329 | mddev_dev_t devlist, int verbose, int test) |
cd29a5c8 | 330 | { |
682c7051 NB |
331 | /* do something to each dev. |
332 | * devmode can be | |
333 | * 'a' - add the device | |
334 | * try HOT_ADD_DISK | |
335 | * If that fails EINVAL, try ADD_NEW_DISK | |
336 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
337 | * device can be 'faulty' or 'detached' in which case all |
338 | * matching devices are removed. | |
682c7051 | 339 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
340 | * device can be 'detached' in which case any device that |
341 | * is inaccessible will be marked faulty. | |
98d27e39 N |
342 | * For 'f' and 'r', the device can also be a kernel-internal |
343 | * name such as 'sdb'. | |
682c7051 | 344 | */ |
a4e13010 | 345 | mddev_dev_t add_devlist = NULL; |
682c7051 NB |
346 | mdu_array_info_t array; |
347 | mdu_disk_info_t disc; | |
7a3be72f | 348 | unsigned long long array_size; |
b80da661 | 349 | mddev_dev_t dv, next = NULL; |
682c7051 | 350 | struct stat stb; |
b80da661 | 351 | int j, jnext = 0; |
0fbf459d | 352 | int tfd; |
3da92f27 | 353 | struct supertype *st, *tst; |
fe80f49b NB |
354 | int duuid[4]; |
355 | int ouuid[4]; | |
f94d52f4 | 356 | int lfd = -1; |
98d27e39 | 357 | int sysfd = -1; |
7d2e6486 | 358 | int count = 0; /* number of actions taken */ |
682c7051 NB |
359 | |
360 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
361 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
362 | devname); | |
363 | return 1; | |
364 | } | |
3da92f27 | 365 | |
7a3be72f NB |
366 | /* array.size is only 32 bit and may be truncated. |
367 | * So read from sysfs if possible, and record number of sectors | |
368 | */ | |
369 | ||
370 | array_size = get_component_size(fd); | |
371 | if (array_size <= 0) | |
372 | array_size = array.size * 2; | |
373 | ||
1686dc25 | 374 | tst = super_by_fd(fd); |
3da92f27 NB |
375 | if (!tst) { |
376 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
377 | array.major_version, array.minor_version); | |
378 | return 1; | |
379 | } | |
380 | ||
b3b4e8a7 | 381 | stb.st_rdev = 0; |
b80da661 | 382 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 383 | unsigned long long ldsize; |
b80da661 NB |
384 | char dvname[20]; |
385 | char *dnprintable = dv->devname; | |
a4e13010 | 386 | char *add_dev = dv->devname; |
f94d52f4 | 387 | int err; |
4a39c6f2 | 388 | |
b80da661 NB |
389 | next = dv->next; |
390 | jnext = 0; | |
391 | ||
392 | if (strcmp(dv->devname, "failed")==0 || | |
393 | strcmp(dv->devname, "faulty")==0) { | |
394 | if (dv->disposition != 'r') { | |
395 | fprintf(stderr, Name ": %s only meaningful " | |
396 | "with -r, not -%c\n", | |
397 | dv->devname, dv->disposition); | |
398 | return 1; | |
399 | } | |
400 | for (; j < array.raid_disks + array.nr_disks ; j++) { | |
b3b4e8a7 | 401 | int dev; |
b80da661 NB |
402 | disc.number = j; |
403 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
404 | continue; | |
405 | if (disc.major == 0 && disc.minor == 0) | |
406 | continue; | |
407 | if ((disc.state & 1) == 0) /* faulty */ | |
408 | continue; | |
b3b4e8a7 N |
409 | dev = makedev(disc.major, disc.minor); |
410 | if (stb.st_rdev == dev) | |
411 | /* already did that one */ | |
412 | continue; | |
413 | stb.st_rdev = dev; | |
b80da661 | 414 | next = dv; |
b3b4e8a7 N |
415 | /* same slot again next time - things might |
416 | * have reshuffled */ | |
417 | jnext = j; | |
b80da661 NB |
418 | sprintf(dvname,"%d:%d", disc.major, disc.minor); |
419 | dnprintable = dvname; | |
420 | break; | |
421 | } | |
422 | if (jnext == 0) | |
423 | continue; | |
424 | } else if (strcmp(dv->devname, "detached") == 0) { | |
425 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
426 | fprintf(stderr, Name ": %s only meaningful " | |
427 | "with -r of -f, not -%c\n", | |
428 | dv->devname, dv->disposition); | |
429 | return 1; | |
430 | } | |
431 | for (; j < array.raid_disks + array.nr_disks; j++) { | |
432 | int sfd; | |
b3b4e8a7 | 433 | int dev; |
b80da661 NB |
434 | disc.number = j; |
435 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
436 | continue; | |
437 | if (disc.major == 0 && disc.minor == 0) | |
438 | continue; | |
439 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
440 | sfd = dev_open(dvname, O_RDONLY); | |
441 | if (sfd >= 0) { | |
442 | close(sfd); | |
443 | continue; | |
444 | } | |
445 | if (dv->disposition == 'f' && | |
446 | (disc.state & 1) == 1) /* already faulty */ | |
447 | continue; | |
448 | if (errno != ENXIO) | |
449 | continue; | |
b3b4e8a7 N |
450 | dev = makedev(disc.major, disc.minor); |
451 | if (stb.st_rdev == dev) | |
452 | /* already did that one */ | |
453 | continue; | |
454 | stb.st_rdev = dev; | |
b80da661 | 455 | next = dv; |
b3b4e8a7 N |
456 | /* same slot again next time - things might |
457 | * have reshuffled */ | |
458 | jnext = j; | |
b80da661 NB |
459 | dnprintable = dvname; |
460 | break; | |
461 | } | |
462 | if (jnext == 0) | |
463 | continue; | |
a4e13010 N |
464 | } else if (strcmp(dv->devname, "missing") == 0) { |
465 | if (dv->disposition != 'a' || dv->re_add == 0) { | |
466 | fprintf(stderr, Name ": 'missing' only meaningful " | |
467 | "with --re-add\n"); | |
468 | return 1; | |
469 | } | |
470 | if (add_devlist == NULL) | |
471 | add_devlist = conf_get_devs(); | |
472 | if (add_devlist == NULL) { | |
473 | fprintf(stderr, Name ": no devices to scan for missing members."); | |
474 | continue; | |
475 | } | |
476 | add_dev = add_devlist->devname; | |
477 | add_devlist = add_devlist->next; | |
478 | if (add_devlist != NULL) | |
479 | next = dv; | |
480 | if (stat(add_dev, &stb) < 0) | |
481 | continue; | |
98d27e39 N |
482 | } else if (strchr(dv->devname, '/') == NULL && |
483 | strlen(dv->devname) < 50) { | |
484 | /* Assume this is a kernel-internal name like 'sda1' */ | |
485 | int found = 0; | |
486 | char dname[55]; | |
487 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
488 | fprintf(stderr, Name ": %s only meaningful " | |
489 | "with -r of -f, not -%c\n", | |
490 | dv->devname, dv->disposition); | |
491 | return 1; | |
492 | } | |
493 | ||
494 | sprintf(dname, "dev-%s", dv->devname); | |
495 | sysfd = sysfs_open(fd2devnum(fd), dname, "block/dev"); | |
496 | if (sysfd >= 0) { | |
497 | char dn[20]; | |
498 | int mj,mn; | |
499 | if (sysfs_fd_get_str(sysfd, dn, 20) > 0 && | |
500 | sscanf(dn, "%d:%d", &mj,&mn) == 2) { | |
501 | stb.st_rdev = makedev(mj,mn); | |
502 | found = 1; | |
503 | } | |
504 | close(sysfd); | |
505 | sysfd = -1; | |
506 | } | |
507 | if (!found) { | |
508 | sysfd = sysfs_open(fd2devnum(fd), dname, "state"); | |
509 | if (sysfd < 0) { | |
510 | fprintf(stderr, Name ": %s does not appear " | |
511 | "to be a component of %s\n", | |
512 | dv->devname, devname); | |
513 | return 1; | |
514 | } | |
515 | } | |
b80da661 NB |
516 | } else { |
517 | j = 0; | |
518 | ||
c7b47447 | 519 | tfd = dev_open(dv->devname, O_RDONLY); |
5a9de8db N |
520 | if (tfd < 0 && dv->disposition == 'r' && |
521 | lstat(dv->devname, &stb) == 0) | |
522 | /* Be happy, the lstat worked, that is | |
523 | * enough for --remove | |
524 | */ | |
525 | ; | |
526 | else { | |
527 | if (tfd < 0 || fstat(tfd, &stb) != 0) { | |
528 | fprintf(stderr, Name ": cannot find %s: %s\n", | |
529 | dv->devname, strerror(errno)); | |
530 | if (tfd >= 0) | |
531 | close(tfd); | |
532 | return 1; | |
533 | } | |
534 | close(tfd); | |
b80da661 NB |
535 | } |
536 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
537 | fprintf(stderr, Name ": %s is not a " | |
538 | "block device.\n", | |
539 | dv->devname); | |
540 | return 1; | |
541 | } | |
682c7051 | 542 | } |
cd29a5c8 | 543 | switch(dv->disposition){ |
682c7051 | 544 | default: |
c913b90e NB |
545 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
546 | dv->devname, dv->disposition); | |
682c7051 NB |
547 | return 1; |
548 | case 'a': | |
4a39c6f2 | 549 | /* add the device */ |
f7e7067b | 550 | if (tst->subarray[0]) { |
f7dd881f DW |
551 | fprintf(stderr, Name ": Cannot add disks to a" |
552 | " \'member\' array, perform this" | |
553 | " operation on the parent container\n"); | |
554 | return 1; | |
f94d52f4 | 555 | } |
f277ce36 | 556 | /* Make sure it isn't in use (in 2.6 or later) */ |
a4e13010 N |
557 | tfd = dev_open(add_dev, O_RDONLY|O_EXCL|O_DIRECT); |
558 | if (tfd < 0 && add_dev != dv->devname) | |
559 | continue; | |
0fbf459d | 560 | if (tfd < 0) { |
d7eaf49f NB |
561 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
562 | dv->devname, strerror(errno)); | |
563 | return 1; | |
564 | } | |
3da92f27 | 565 | |
1686dc25 | 566 | st = dup_super(tst); |
3da92f27 | 567 | |
fe80f49b | 568 | if (array.not_persistent==0) |
3da92f27 NB |
569 | st->ss->load_super(st, tfd, NULL); |
570 | ||
a4e13010 N |
571 | if (add_dev == dv->devname) { |
572 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { | |
573 | close(tfd); | |
574 | return 1; | |
575 | } | |
576 | } else if (!get_dev_size(tfd, NULL, &ldsize)) { | |
4a39c6f2 | 577 | close(tfd); |
a4e13010 | 578 | continue; |
4a39c6f2 | 579 | } |
f94d52f4 NB |
580 | |
581 | if (!tst->ss->external && | |
582 | array.major_version == 0 && | |
60d9a174 | 583 | md_get_version(fd)%100 < 2) { |
a4e13010 | 584 | close(tfd); |
892debc8 NB |
585 | if (ioctl(fd, HOT_ADD_DISK, |
586 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
587 | if (verbose >= 0) |
588 | fprintf(stderr, Name ": hot added %s\n", | |
a4e13010 | 589 | add_dev); |
892debc8 NB |
590 | continue; |
591 | } | |
592 | ||
cd29a5c8 | 593 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
a4e13010 | 594 | add_dev, strerror(errno)); |
cd29a5c8 NB |
595 | return 1; |
596 | } | |
892debc8 | 597 | |
43dad3d6 | 598 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 599 | |
fe80f49b | 600 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
601 | * a spare slot to use. |
602 | * For 'external' array (well, container based), | |
603 | * We can just load the metadata for the array. | |
fe80f49b | 604 | */ |
a4e13010 N |
605 | if (tst->sb) |
606 | /* already loaded */; | |
607 | else if (tst->ss->external) { | |
43dad3d6 DW |
608 | tst->ss->load_super(tst, fd, NULL); |
609 | } else for (j = 0; j < tst->max_devs; j++) { | |
fe80f49b NB |
610 | char *dev; |
611 | int dfd; | |
612 | disc.number = j; | |
613 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
614 | continue; | |
615 | if (disc.major==0 && disc.minor==0) | |
616 | continue; | |
617 | if ((disc.state & 4)==0) continue; /* sync */ | |
618 | /* Looks like a good device to try */ | |
16c6fa80 | 619 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 620 | if (!dev) continue; |
16c6fa80 | 621 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 622 | if (dfd < 0) continue; |
3da92f27 NB |
623 | if (tst->ss->load_super(tst, dfd, |
624 | NULL)) { | |
fe80f49b NB |
625 | close(dfd); |
626 | continue; | |
627 | } | |
892debc8 | 628 | close(dfd); |
fe80f49b NB |
629 | break; |
630 | } | |
43dad3d6 | 631 | /* FIXME this is a bad test to be using */ |
3da92f27 | 632 | if (!tst->sb) { |
a4e13010 | 633 | close(tfd); |
fe80f49b NB |
634 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); |
635 | return 1; | |
636 | } | |
2a528478 N |
637 | |
638 | /* Make sure device is large enough */ | |
639 | if (tst->ss->avail_size(tst, ldsize/512) < | |
640 | array_size) { | |
a4e13010 N |
641 | close(tfd); |
642 | if (add_dev != dv->devname) | |
643 | continue; | |
2a528478 N |
644 | fprintf(stderr, Name ": %s not large enough to join array\n", |
645 | dv->devname); | |
646 | return 1; | |
647 | } | |
648 | ||
fe80f49b NB |
649 | /* Possibly this device was recently part of the array |
650 | * and was temporarily removed, and is now being re-added. | |
651 | * If so, we can simply re-add it. | |
652 | */ | |
3da92f27 | 653 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 NB |
654 | |
655 | /* re-add doesn't work for version-1 superblocks | |
656 | * before 2.6.18 :-( | |
657 | */ | |
658 | if (array.major_version == 1 && | |
659 | get_linux_version() <= 2006018) | |
660 | ; | |
3da92f27 NB |
661 | else if (st->sb) { |
662 | st->ss->uuid_from_super(st, ouuid); | |
fe80f49b | 663 | if (memcmp(duuid, ouuid, sizeof(ouuid))==0) { |
4d20d744 NB |
664 | /* looks close enough for now. Kernel |
665 | * will worry about whether a bitmap | |
666 | * based reconstruction is possible. | |
fe80f49b NB |
667 | */ |
668 | struct mdinfo mdi; | |
3da92f27 | 669 | st->ss->getinfo_super(st, &mdi); |
fe80f49b NB |
670 | disc.major = major(stb.st_rdev); |
671 | disc.minor = minor(stb.st_rdev); | |
672 | disc.number = mdi.disk.number; | |
673 | disc.raid_disk = mdi.disk.raid_disk; | |
674 | disc.state = mdi.disk.state; | |
b3d31955 | 675 | if (dv->writemostly == 1) |
4d20d744 | 676 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
677 | if (dv->writemostly == 2) |
678 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
a4e13010 N |
679 | remove_partitions(tfd); |
680 | close(tfd); | |
681 | tfd = -1; | |
5c64fcb5 N |
682 | /* don't even try if disk is marked as faulty */ |
683 | errno = 0; | |
684 | if ((disc.state & 1) == 0 && | |
685 | ioctl(fd, ADD_NEW_DISK, &disc) == 0) { | |
fe80f49b | 686 | if (verbose >= 0) |
a4e13010 | 687 | fprintf(stderr, Name ": re-added %s\n", add_dev); |
7d2e6486 | 688 | count++; |
308e1801 | 689 | continue; |
fe80f49b | 690 | } |
c9f39c1b | 691 | if (errno == ENOMEM || errno == EROFS) { |
a4e13010 | 692 | close(tfd); |
c9f39c1b | 693 | fprintf(stderr, Name ": add new device failed for %s: %s\n", |
a4e13010 N |
694 | add_dev, strerror(errno)); |
695 | if (add_dev != dv->devname) | |
696 | continue; | |
c9f39c1b N |
697 | return 1; |
698 | } | |
fe80f49b NB |
699 | /* fall back on normal-add */ |
700 | } | |
892debc8 | 701 | } |
a4e13010 N |
702 | if (add_dev != dv->devname) { |
703 | if (verbose > 0) | |
704 | fprintf(stderr, Name | |
705 | ": --re-add for %s to %s is not possible\n", | |
706 | add_dev, devname); | |
707 | if (tfd >= 0) | |
708 | close(tfd); | |
709 | continue; | |
710 | } | |
751fd6c0 | 711 | if (dv->re_add) { |
a4e13010 N |
712 | if (tfd >= 0) |
713 | close(tfd); | |
751fd6c0 N |
714 | fprintf(stderr, Name |
715 | ": --re-add for %s to %s is not possible\n", | |
716 | dv->devname, devname); | |
717 | return 1; | |
718 | } | |
4a39c6f2 NB |
719 | } else { |
720 | /* non-persistent. Must ensure that new drive | |
721 | * is at least array.size big. | |
722 | */ | |
7a3be72f | 723 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
724 | fprintf(stderr, Name ": %s not large enough to join array\n", |
725 | dv->devname); | |
726 | return 1; | |
727 | } | |
892debc8 | 728 | } |
a4e13010 N |
729 | /* committed to really trying this device now*/ |
730 | if (tfd >= 0) { | |
731 | remove_partitions(tfd); | |
732 | close(tfd); | |
733 | } | |
7eae7080 NB |
734 | /* in 2.6.17 and earlier, version-1 superblocks won't |
735 | * use the number we write, but will choose a free number. | |
736 | * we must choose the same free number, which requires | |
737 | * starting at 'raid_disks' and counting up | |
738 | */ | |
3da92f27 | 739 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 740 | disc.number = j; |
682c7051 NB |
741 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
742 | break; | |
743 | if (disc.major==0 && disc.minor==0) | |
744 | break; | |
745 | if (disc.state & 8) /* removed */ | |
746 | break; | |
747 | } | |
0df46c2a NB |
748 | disc.major = major(stb.st_rdev); |
749 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
750 | disc.number =j; |
751 | disc.state = 0; | |
43dad3d6 | 752 | if (array.not_persistent==0 || tst->ss->external) { |
111d01fc | 753 | int dfd; |
b3d31955 | 754 | if (dv->writemostly == 1) |
fe80f49b | 755 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
3b435195 | 756 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
f20c3968 DW |
757 | if (tst->ss->add_to_super(tst, &disc, dfd, |
758 | dv->devname)) { | |
f20c3968 DW |
759 | close(dfd); |
760 | return 1; | |
761 | } | |
111d01fc | 762 | /* write_init_super will close 'dfd' */ |
43dad3d6 DW |
763 | if (tst->ss->external) |
764 | /* mdmon will write the metadata */ | |
765 | close(dfd); | |
766 | else if (tst->ss->write_init_super(tst)) | |
fe80f49b NB |
767 | return 1; |
768 | } else if (dv->re_add) { | |
769 | /* this had better be raid1. | |
770 | * As we are "--re-add"ing we must find a spare slot | |
771 | * to fill. | |
772 | */ | |
773 | char *used = malloc(array.raid_disks); | |
774 | memset(used, 0, array.raid_disks); | |
3da92f27 | 775 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
776 | mdu_disk_info_t disc2; |
777 | disc2.number = j; | |
778 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
779 | continue; | |
780 | if (disc2.major==0 && disc2.minor==0) | |
781 | continue; | |
782 | if (disc2.state & 8) /* removed */ | |
783 | continue; | |
784 | if (disc2.raid_disk < 0) | |
785 | continue; | |
786 | if (disc2.raid_disk > array.raid_disks) | |
787 | continue; | |
788 | used[disc2.raid_disk] = 1; | |
789 | } | |
790 | for (j=0 ; j<array.raid_disks; j++) | |
791 | if (!used[j]) { | |
792 | disc.raid_disk = j; | |
793 | disc.state |= (1<<MD_DISK_SYNC); | |
794 | break; | |
795 | } | |
0eb26465 | 796 | free(used); |
fe80f49b | 797 | } |
b3d31955 | 798 | if (dv->writemostly == 1) |
d8def61c | 799 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 DW |
800 | if (tst->ss->external) { |
801 | /* add a disk to an external metadata container | |
802 | * only if mdmon is around to see it | |
803 | */ | |
804 | struct mdinfo new_mdi; | |
805 | struct mdinfo *sra; | |
806 | int container_fd; | |
807 | int devnum = fd2devnum(fd); | |
808 | ||
809 | container_fd = open_dev_excl(devnum); | |
810 | if (container_fd < 0) { | |
811 | fprintf(stderr, Name ": add failed for %s:" | |
812 | " could not get exclusive access to container\n", | |
813 | dv->devname); | |
814 | return 1; | |
815 | } | |
816 | ||
817 | if (!mdmon_running(devnum)) { | |
818 | fprintf(stderr, Name ": add failed for %s: mdmon not running\n", | |
819 | dv->devname); | |
820 | close(container_fd); | |
821 | return 1; | |
822 | } | |
823 | ||
824 | sra = sysfs_read(container_fd, -1, 0); | |
825 | if (!sra) { | |
826 | fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", | |
827 | dv->devname); | |
828 | close(container_fd); | |
829 | return 1; | |
830 | } | |
831 | sra->array.level = LEVEL_CONTAINER; | |
832 | /* Need to set data_offset and component_size */ | |
833 | tst->ss->getinfo_super(tst, &new_mdi); | |
834 | new_mdi.disk.major = disc.major; | |
835 | new_mdi.disk.minor = disc.minor; | |
d23534e4 | 836 | new_mdi.recovery_start = 0; |
462906cd | 837 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { |
43dad3d6 DW |
838 | fprintf(stderr, Name ": add new device to external metadata" |
839 | " failed for %s\n", dv->devname); | |
840 | close(container_fd); | |
841 | return 1; | |
842 | } | |
843 | ping_monitor(devnum2devname(devnum)); | |
844 | sysfs_free(sra); | |
845 | close(container_fd); | |
846 | } else if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
f277ce36 NB |
847 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", |
848 | dv->devname, j, strerror(errno)); | |
682c7051 NB |
849 | return 1; |
850 | } | |
dab6685f NB |
851 | if (verbose >= 0) |
852 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
853 | break; |
854 | ||
855 | case 'r': | |
856 | /* hot remove */ | |
f7e7067b | 857 | if (tst->subarray[0]) { |
f7dd881f DW |
858 | fprintf(stderr, Name ": Cannot remove disks from a" |
859 | " \'member\' array, perform this" | |
860 | " operation on the parent container\n"); | |
98d27e39 N |
861 | if (sysfd >= 0) |
862 | close(sysfd); | |
f7dd881f | 863 | return 1; |
f94d52f4 NB |
864 | } |
865 | if (tst->ss->external) { | |
866 | /* To remove a device from a container, we must | |
867 | * check that it isn't in use in an array. | |
868 | * This involves looking in the 'holders' | |
869 | * directory - there must be just one entry, | |
870 | * the container. | |
871 | * To ensure that it doesn't get used as a | |
872 | * hold spare while we are checking, we | |
873 | * get an O_EXCL open on the container | |
874 | */ | |
875 | int dnum = fd2devnum(fd); | |
876 | lfd = open_dev_excl(dnum); | |
877 | if (lfd < 0) { | |
878 | fprintf(stderr, Name | |
879 | ": Cannot get exclusive access " | |
880 | " to container - odd\n"); | |
98d27e39 N |
881 | if (sysfd >= 0) |
882 | close(sysfd); | |
f94d52f4 NB |
883 | return 1; |
884 | } | |
85f9b5f7 DW |
885 | /* in the detached case it is not possible to |
886 | * check if we are the unique holder, so just | |
887 | * rely on the 'detached' checks | |
888 | */ | |
889 | if (strcmp(dv->devname, "detached") == 0 || | |
98d27e39 | 890 | sysfd >= 0 || |
85f9b5f7 DW |
891 | sysfs_unique_holder(dnum, stb.st_rdev)) |
892 | /* pass */; | |
893 | else { | |
f94d52f4 NB |
894 | fprintf(stderr, Name |
895 | ": %s is %s, cannot remove.\n", | |
896 | dnprintable, | |
897 | errno == EEXIST ? "still in use": | |
898 | "not a member"); | |
899 | close(lfd); | |
900 | return 1; | |
901 | } | |
902 | } | |
82b27616 | 903 | /* FIXME check that it is a current member */ |
98d27e39 N |
904 | if (sysfd >= 0) { |
905 | /* device has been removed and we don't know | |
906 | * the major:minor number | |
907 | */ | |
908 | int n = write(sysfd, "remove", 6); | |
909 | if (n != 6) | |
f94d52f4 | 910 | err = -1; |
98d27e39 N |
911 | else |
912 | err = 0; | |
913 | close(sysfd); | |
914 | sysfd = -1; | |
915 | } else { | |
916 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); | |
917 | if (err && errno == ENODEV) { | |
918 | /* Old kernels rejected this if no personality | |
919 | * registered */ | |
920 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
921 | struct mdinfo *dv = NULL; | |
922 | if (sra) | |
923 | dv = sra->devs; | |
924 | for ( ; dv ; dv=dv->next) | |
925 | if (dv->disk.major == major(stb.st_rdev) && | |
926 | dv->disk.minor == minor(stb.st_rdev)) | |
927 | break; | |
928 | if (dv) | |
929 | err = sysfs_set_str(sra, dv, | |
930 | "state", "remove"); | |
931 | else | |
932 | err = -1; | |
933 | if (sra) | |
934 | sysfs_free(sra); | |
935 | } | |
f94d52f4 NB |
936 | } |
937 | if (err) { | |
b80da661 NB |
938 | fprintf(stderr, Name ": hot remove failed " |
939 | "for %s: %s\n", dnprintable, | |
940 | strerror(errno)); | |
f94d52f4 NB |
941 | if (lfd >= 0) |
942 | close(lfd); | |
682c7051 NB |
943 | return 1; |
944 | } | |
313a4a82 DW |
945 | if (tst->ss->external) { |
946 | /* | |
947 | * Before dropping our exclusive open we make an | |
948 | * attempt at preventing mdmon from seeing an | |
949 | * 'add' event before reconciling this 'remove' | |
950 | * event. | |
951 | */ | |
952 | char *name = devnum2devname(fd2devnum(fd)); | |
953 | ||
954 | if (!name) { | |
955 | fprintf(stderr, Name ": unable to get container name\n"); | |
956 | return 1; | |
957 | } | |
958 | ||
959 | ping_manager(name); | |
960 | free(name); | |
961 | } | |
98d27e39 N |
962 | if (lfd >= 0) |
963 | close(lfd); | |
7d2e6486 | 964 | count++; |
dab6685f | 965 | if (verbose >= 0) |
29ba4804 N |
966 | fprintf(stderr, Name ": hot removed %s from %s\n", |
967 | dnprintable, devname); | |
682c7051 NB |
968 | break; |
969 | ||
970 | case 'f': /* set faulty */ | |
971 | /* FIXME check current member */ | |
98d27e39 N |
972 | if ((sysfd >= 0 && write(sysfd, "faulty", 6) != 6) || |
973 | (sysfd < 0 && ioctl(fd, SET_DISK_FAULTY, | |
974 | (unsigned long) stb.st_rdev))) { | |
b83d95f3 | 975 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 976 | dnprintable, strerror(errno)); |
98d27e39 N |
977 | if (sysfd >= 0) |
978 | close(sysfd); | |
682c7051 NB |
979 | return 1; |
980 | } | |
98d27e39 N |
981 | if (sysfd >= 0) |
982 | close(sysfd); | |
983 | sysfd = -1; | |
7d2e6486 | 984 | count++; |
dab6685f NB |
985 | if (verbose >= 0) |
986 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 987 | dnprintable, devname); |
682c7051 NB |
988 | break; |
989 | } | |
990 | } | |
7d2e6486 N |
991 | if (test && count == 0) |
992 | return 2; | |
682c7051 | 993 | return 0; |
64c4757e | 994 | } |
1f48664b NB |
995 | |
996 | int autodetect(void) | |
997 | { | |
998 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
999 | int rv = 1; | |
1000 | int fd = dev_open("9:0", O_RDONLY); | |
1001 | if (fd >= 0) { | |
1002 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
1003 | rv = 0; | |
1004 | close(fd); | |
1005 | } | |
1006 | return rv; | |
1007 | } | |
aa534678 DW |
1008 | |
1009 | int Update_subarray(char *dev, char *subarray, char *update, mddev_ident_t ident, int quiet) | |
1010 | { | |
1011 | struct supertype supertype, *st = &supertype; | |
1012 | int fd, rv = 2; | |
1013 | ||
1014 | memset(st, 0, sizeof(*st)); | |
1015 | if (snprintf(st->subarray, sizeof(st->subarray), "%s", subarray) >= | |
1016 | sizeof(st->subarray)) { | |
1017 | if (!quiet) | |
1018 | fprintf(stderr, | |
1019 | Name ": Input overflow for subarray '%s' > %zu bytes\n", | |
1020 | subarray, sizeof(st->subarray) - 1); | |
1021 | return 2; | |
1022 | } | |
1023 | ||
1024 | fd = open_subarray(dev, st, quiet); | |
1025 | if (fd < 0) | |
1026 | return 2; | |
1027 | ||
1028 | if (!st->ss->update_subarray) { | |
1029 | if (!quiet) | |
1030 | fprintf(stderr, | |
1031 | Name ": Operation not supported for %s metadata\n", | |
1032 | st->ss->name); | |
1033 | goto free_super; | |
1034 | } | |
1035 | ||
1036 | if (mdmon_running(st->devnum)) | |
1037 | st->update_tail = &st->updates; | |
1038 | ||
1039 | rv = st->ss->update_subarray(st, update, ident); | |
1040 | ||
1041 | if (rv) { | |
1042 | if (!quiet) | |
1043 | fprintf(stderr, Name ": Failed to update %s of subarray-%s in %s\n", | |
1044 | update, subarray, dev); | |
1045 | } else if (st->update_tail) | |
1046 | flush_metadata_updates(st); | |
1047 | else | |
1048 | st->ss->sync_metadata(st); | |
1049 | ||
1050 | if (rv == 0 && strcmp(update, "name") == 0 && !quiet) | |
1051 | fprintf(stderr, | |
1052 | Name ": Updated subarray-%s name from %s, UUIDs may have changed\n", | |
1053 | subarray, dev); | |
1054 | ||
1055 | free_super: | |
1056 | st->ss->free_super(st); | |
1057 | close(fd); | |
1058 | ||
1059 | return rv; | |
1060 | } | |
435d4ebb | 1061 | #endif |