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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, |
dab6685f | 329 | mddev_dev_t devlist, int verbose) |
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 NB |
344 | */ |
345 | mdu_array_info_t array; | |
346 | mdu_disk_info_t disc; | |
7a3be72f | 347 | unsigned long long array_size; |
b80da661 | 348 | mddev_dev_t dv, next = NULL; |
682c7051 | 349 | struct stat stb; |
b80da661 | 350 | int j, jnext = 0; |
0fbf459d | 351 | int tfd; |
3da92f27 | 352 | struct supertype *st, *tst; |
fe80f49b NB |
353 | int duuid[4]; |
354 | int ouuid[4]; | |
f94d52f4 | 355 | int lfd = -1; |
98d27e39 | 356 | int sysfd = -1; |
682c7051 NB |
357 | |
358 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
359 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
360 | devname); | |
361 | return 1; | |
362 | } | |
3da92f27 | 363 | |
7a3be72f NB |
364 | /* array.size is only 32 bit and may be truncated. |
365 | * So read from sysfs if possible, and record number of sectors | |
366 | */ | |
367 | ||
368 | array_size = get_component_size(fd); | |
369 | if (array_size <= 0) | |
370 | array_size = array.size * 2; | |
371 | ||
1686dc25 | 372 | tst = super_by_fd(fd); |
3da92f27 NB |
373 | if (!tst) { |
374 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
375 | array.major_version, array.minor_version); | |
376 | return 1; | |
377 | } | |
378 | ||
b3b4e8a7 | 379 | stb.st_rdev = 0; |
b80da661 | 380 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 381 | unsigned long long ldsize; |
b80da661 NB |
382 | char dvname[20]; |
383 | char *dnprintable = dv->devname; | |
f94d52f4 | 384 | int err; |
4a39c6f2 | 385 | |
b80da661 NB |
386 | next = dv->next; |
387 | jnext = 0; | |
388 | ||
389 | if (strcmp(dv->devname, "failed")==0 || | |
390 | strcmp(dv->devname, "faulty")==0) { | |
391 | if (dv->disposition != 'r') { | |
392 | fprintf(stderr, Name ": %s only meaningful " | |
393 | "with -r, not -%c\n", | |
394 | dv->devname, dv->disposition); | |
395 | return 1; | |
396 | } | |
397 | for (; j < array.raid_disks + array.nr_disks ; j++) { | |
b3b4e8a7 | 398 | int dev; |
b80da661 NB |
399 | disc.number = j; |
400 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
401 | continue; | |
402 | if (disc.major == 0 && disc.minor == 0) | |
403 | continue; | |
404 | if ((disc.state & 1) == 0) /* faulty */ | |
405 | continue; | |
b3b4e8a7 N |
406 | dev = makedev(disc.major, disc.minor); |
407 | if (stb.st_rdev == dev) | |
408 | /* already did that one */ | |
409 | continue; | |
410 | stb.st_rdev = dev; | |
b80da661 | 411 | next = dv; |
b3b4e8a7 N |
412 | /* same slot again next time - things might |
413 | * have reshuffled */ | |
414 | jnext = j; | |
b80da661 NB |
415 | sprintf(dvname,"%d:%d", disc.major, disc.minor); |
416 | dnprintable = dvname; | |
417 | break; | |
418 | } | |
419 | if (jnext == 0) | |
420 | continue; | |
421 | } else if (strcmp(dv->devname, "detached") == 0) { | |
422 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
423 | fprintf(stderr, Name ": %s only meaningful " | |
424 | "with -r of -f, not -%c\n", | |
425 | dv->devname, dv->disposition); | |
426 | return 1; | |
427 | } | |
428 | for (; j < array.raid_disks + array.nr_disks; j++) { | |
429 | int sfd; | |
b3b4e8a7 | 430 | int dev; |
b80da661 NB |
431 | disc.number = j; |
432 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
433 | continue; | |
434 | if (disc.major == 0 && disc.minor == 0) | |
435 | continue; | |
436 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
437 | sfd = dev_open(dvname, O_RDONLY); | |
438 | if (sfd >= 0) { | |
439 | close(sfd); | |
440 | continue; | |
441 | } | |
442 | if (dv->disposition == 'f' && | |
443 | (disc.state & 1) == 1) /* already faulty */ | |
444 | continue; | |
445 | if (errno != ENXIO) | |
446 | continue; | |
b3b4e8a7 N |
447 | dev = makedev(disc.major, disc.minor); |
448 | if (stb.st_rdev == dev) | |
449 | /* already did that one */ | |
450 | continue; | |
451 | stb.st_rdev = dev; | |
b80da661 | 452 | next = dv; |
b3b4e8a7 N |
453 | /* same slot again next time - things might |
454 | * have reshuffled */ | |
455 | jnext = j; | |
b80da661 NB |
456 | dnprintable = dvname; |
457 | break; | |
458 | } | |
459 | if (jnext == 0) | |
460 | continue; | |
98d27e39 N |
461 | } else if (strchr(dv->devname, '/') == NULL && |
462 | strlen(dv->devname) < 50) { | |
463 | /* Assume this is a kernel-internal name like 'sda1' */ | |
464 | int found = 0; | |
465 | char dname[55]; | |
466 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
467 | fprintf(stderr, Name ": %s only meaningful " | |
468 | "with -r of -f, not -%c\n", | |
469 | dv->devname, dv->disposition); | |
470 | return 1; | |
471 | } | |
472 | ||
473 | sprintf(dname, "dev-%s", dv->devname); | |
474 | sysfd = sysfs_open(fd2devnum(fd), dname, "block/dev"); | |
475 | if (sysfd >= 0) { | |
476 | char dn[20]; | |
477 | int mj,mn; | |
478 | if (sysfs_fd_get_str(sysfd, dn, 20) > 0 && | |
479 | sscanf(dn, "%d:%d", &mj,&mn) == 2) { | |
480 | stb.st_rdev = makedev(mj,mn); | |
481 | found = 1; | |
482 | } | |
483 | close(sysfd); | |
484 | sysfd = -1; | |
485 | } | |
486 | if (!found) { | |
487 | sysfd = sysfs_open(fd2devnum(fd), dname, "state"); | |
488 | if (sysfd < 0) { | |
489 | fprintf(stderr, Name ": %s does not appear " | |
490 | "to be a component of %s\n", | |
491 | dv->devname, devname); | |
492 | return 1; | |
493 | } | |
494 | } | |
b80da661 NB |
495 | } else { |
496 | j = 0; | |
497 | ||
c7b47447 | 498 | tfd = dev_open(dv->devname, O_RDONLY); |
5a9de8db N |
499 | if (tfd < 0 && dv->disposition == 'r' && |
500 | lstat(dv->devname, &stb) == 0) | |
501 | /* Be happy, the lstat worked, that is | |
502 | * enough for --remove | |
503 | */ | |
504 | ; | |
505 | else { | |
506 | if (tfd < 0 || fstat(tfd, &stb) != 0) { | |
507 | fprintf(stderr, Name ": cannot find %s: %s\n", | |
508 | dv->devname, strerror(errno)); | |
509 | if (tfd >= 0) | |
510 | close(tfd); | |
511 | return 1; | |
512 | } | |
513 | close(tfd); | |
b80da661 NB |
514 | } |
515 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
516 | fprintf(stderr, Name ": %s is not a " | |
517 | "block device.\n", | |
518 | dv->devname); | |
519 | return 1; | |
520 | } | |
682c7051 | 521 | } |
cd29a5c8 | 522 | switch(dv->disposition){ |
682c7051 | 523 | default: |
c913b90e NB |
524 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
525 | dv->devname, dv->disposition); | |
682c7051 NB |
526 | return 1; |
527 | case 'a': | |
4a39c6f2 | 528 | /* add the device */ |
f7e7067b | 529 | if (tst->subarray[0]) { |
f7dd881f DW |
530 | fprintf(stderr, Name ": Cannot add disks to a" |
531 | " \'member\' array, perform this" | |
532 | " operation on the parent container\n"); | |
533 | return 1; | |
f94d52f4 | 534 | } |
f277ce36 | 535 | /* Make sure it isn't in use (in 2.6 or later) */ |
3b435195 | 536 | tfd = dev_open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT); |
0fbf459d | 537 | if (tfd < 0) { |
d7eaf49f NB |
538 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
539 | dv->devname, strerror(errno)); | |
540 | return 1; | |
541 | } | |
25037aa8 | 542 | remove_partitions(tfd); |
3da92f27 | 543 | |
1686dc25 | 544 | st = dup_super(tst); |
3da92f27 | 545 | |
fe80f49b | 546 | if (array.not_persistent==0) |
3da92f27 NB |
547 | st->ss->load_super(st, tfd, NULL); |
548 | ||
beae1dfe | 549 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { |
4a39c6f2 NB |
550 | close(tfd); |
551 | return 1; | |
4a39c6f2 | 552 | } |
0fbf459d | 553 | close(tfd); |
fe80f49b | 554 | |
f94d52f4 NB |
555 | |
556 | if (!tst->ss->external && | |
557 | array.major_version == 0 && | |
60d9a174 | 558 | md_get_version(fd)%100 < 2) { |
892debc8 NB |
559 | if (ioctl(fd, HOT_ADD_DISK, |
560 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
561 | if (verbose >= 0) |
562 | fprintf(stderr, Name ": hot added %s\n", | |
563 | dv->devname); | |
892debc8 NB |
564 | continue; |
565 | } | |
566 | ||
cd29a5c8 | 567 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
892debc8 | 568 | dv->devname, strerror(errno)); |
cd29a5c8 NB |
569 | return 1; |
570 | } | |
892debc8 | 571 | |
43dad3d6 | 572 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 573 | |
fe80f49b | 574 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
575 | * a spare slot to use. |
576 | * For 'external' array (well, container based), | |
577 | * We can just load the metadata for the array. | |
fe80f49b | 578 | */ |
43dad3d6 DW |
579 | if (tst->ss->external) { |
580 | tst->ss->load_super(tst, fd, NULL); | |
581 | } else for (j = 0; j < tst->max_devs; j++) { | |
fe80f49b NB |
582 | char *dev; |
583 | int dfd; | |
584 | disc.number = j; | |
585 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
586 | continue; | |
587 | if (disc.major==0 && disc.minor==0) | |
588 | continue; | |
589 | if ((disc.state & 4)==0) continue; /* sync */ | |
590 | /* Looks like a good device to try */ | |
16c6fa80 | 591 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 592 | if (!dev) continue; |
16c6fa80 | 593 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 594 | if (dfd < 0) continue; |
3da92f27 NB |
595 | if (tst->ss->load_super(tst, dfd, |
596 | NULL)) { | |
fe80f49b NB |
597 | close(dfd); |
598 | continue; | |
599 | } | |
892debc8 | 600 | close(dfd); |
fe80f49b NB |
601 | break; |
602 | } | |
43dad3d6 | 603 | /* FIXME this is a bad test to be using */ |
3da92f27 | 604 | if (!tst->sb) { |
fe80f49b NB |
605 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); |
606 | return 1; | |
607 | } | |
2a528478 N |
608 | |
609 | /* Make sure device is large enough */ | |
610 | if (tst->ss->avail_size(tst, ldsize/512) < | |
611 | array_size) { | |
612 | fprintf(stderr, Name ": %s not large enough to join array\n", | |
613 | dv->devname); | |
614 | return 1; | |
615 | } | |
616 | ||
fe80f49b NB |
617 | /* Possibly this device was recently part of the array |
618 | * and was temporarily removed, and is now being re-added. | |
619 | * If so, we can simply re-add it. | |
620 | */ | |
3da92f27 | 621 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 NB |
622 | |
623 | /* re-add doesn't work for version-1 superblocks | |
624 | * before 2.6.18 :-( | |
625 | */ | |
626 | if (array.major_version == 1 && | |
627 | get_linux_version() <= 2006018) | |
628 | ; | |
3da92f27 NB |
629 | else if (st->sb) { |
630 | st->ss->uuid_from_super(st, ouuid); | |
fe80f49b | 631 | if (memcmp(duuid, ouuid, sizeof(ouuid))==0) { |
4d20d744 NB |
632 | /* looks close enough for now. Kernel |
633 | * will worry about whether a bitmap | |
634 | * based reconstruction is possible. | |
fe80f49b NB |
635 | */ |
636 | struct mdinfo mdi; | |
3da92f27 | 637 | st->ss->getinfo_super(st, &mdi); |
fe80f49b NB |
638 | disc.major = major(stb.st_rdev); |
639 | disc.minor = minor(stb.st_rdev); | |
640 | disc.number = mdi.disk.number; | |
641 | disc.raid_disk = mdi.disk.raid_disk; | |
642 | disc.state = mdi.disk.state; | |
b3d31955 | 643 | if (dv->writemostly == 1) |
4d20d744 | 644 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
645 | if (dv->writemostly == 2) |
646 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
5c64fcb5 N |
647 | /* don't even try if disk is marked as faulty */ |
648 | errno = 0; | |
649 | if ((disc.state & 1) == 0 && | |
650 | ioctl(fd, ADD_NEW_DISK, &disc) == 0) { | |
fe80f49b NB |
651 | if (verbose >= 0) |
652 | fprintf(stderr, Name ": re-added %s\n", dv->devname); | |
308e1801 | 653 | continue; |
fe80f49b | 654 | } |
c9f39c1b N |
655 | if (errno == ENOMEM || errno == EROFS) { |
656 | fprintf(stderr, Name ": add new device failed for %s: %s\n", | |
657 | dv->devname, strerror(errno)); | |
658 | return 1; | |
659 | } | |
fe80f49b NB |
660 | /* fall back on normal-add */ |
661 | } | |
892debc8 | 662 | } |
751fd6c0 N |
663 | if (dv->re_add) { |
664 | fprintf(stderr, Name | |
665 | ": --re-add for %s to %s is not possible\n", | |
666 | dv->devname, devname); | |
667 | return 1; | |
668 | } | |
4a39c6f2 NB |
669 | } else { |
670 | /* non-persistent. Must ensure that new drive | |
671 | * is at least array.size big. | |
672 | */ | |
7a3be72f | 673 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
674 | fprintf(stderr, Name ": %s not large enough to join array\n", |
675 | dv->devname); | |
676 | return 1; | |
677 | } | |
892debc8 | 678 | } |
7eae7080 NB |
679 | /* in 2.6.17 and earlier, version-1 superblocks won't |
680 | * use the number we write, but will choose a free number. | |
681 | * we must choose the same free number, which requires | |
682 | * starting at 'raid_disks' and counting up | |
683 | */ | |
3da92f27 | 684 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 685 | disc.number = j; |
682c7051 NB |
686 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
687 | break; | |
688 | if (disc.major==0 && disc.minor==0) | |
689 | break; | |
690 | if (disc.state & 8) /* removed */ | |
691 | break; | |
692 | } | |
0df46c2a NB |
693 | disc.major = major(stb.st_rdev); |
694 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
695 | disc.number =j; |
696 | disc.state = 0; | |
43dad3d6 | 697 | if (array.not_persistent==0 || tst->ss->external) { |
111d01fc | 698 | int dfd; |
b3d31955 | 699 | if (dv->writemostly == 1) |
fe80f49b | 700 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
3b435195 | 701 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
f20c3968 DW |
702 | if (tst->ss->add_to_super(tst, &disc, dfd, |
703 | dv->devname)) { | |
f20c3968 DW |
704 | close(dfd); |
705 | return 1; | |
706 | } | |
111d01fc | 707 | /* write_init_super will close 'dfd' */ |
43dad3d6 DW |
708 | if (tst->ss->external) |
709 | /* mdmon will write the metadata */ | |
710 | close(dfd); | |
711 | else if (tst->ss->write_init_super(tst)) | |
fe80f49b NB |
712 | return 1; |
713 | } else if (dv->re_add) { | |
714 | /* this had better be raid1. | |
715 | * As we are "--re-add"ing we must find a spare slot | |
716 | * to fill. | |
717 | */ | |
718 | char *used = malloc(array.raid_disks); | |
719 | memset(used, 0, array.raid_disks); | |
3da92f27 | 720 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
721 | mdu_disk_info_t disc2; |
722 | disc2.number = j; | |
723 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
724 | continue; | |
725 | if (disc2.major==0 && disc2.minor==0) | |
726 | continue; | |
727 | if (disc2.state & 8) /* removed */ | |
728 | continue; | |
729 | if (disc2.raid_disk < 0) | |
730 | continue; | |
731 | if (disc2.raid_disk > array.raid_disks) | |
732 | continue; | |
733 | used[disc2.raid_disk] = 1; | |
734 | } | |
735 | for (j=0 ; j<array.raid_disks; j++) | |
736 | if (!used[j]) { | |
737 | disc.raid_disk = j; | |
738 | disc.state |= (1<<MD_DISK_SYNC); | |
739 | break; | |
740 | } | |
0eb26465 | 741 | free(used); |
fe80f49b | 742 | } |
b3d31955 | 743 | if (dv->writemostly == 1) |
d8def61c | 744 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 DW |
745 | if (tst->ss->external) { |
746 | /* add a disk to an external metadata container | |
747 | * only if mdmon is around to see it | |
748 | */ | |
749 | struct mdinfo new_mdi; | |
750 | struct mdinfo *sra; | |
751 | int container_fd; | |
752 | int devnum = fd2devnum(fd); | |
753 | ||
754 | container_fd = open_dev_excl(devnum); | |
755 | if (container_fd < 0) { | |
756 | fprintf(stderr, Name ": add failed for %s:" | |
757 | " could not get exclusive access to container\n", | |
758 | dv->devname); | |
759 | return 1; | |
760 | } | |
761 | ||
762 | if (!mdmon_running(devnum)) { | |
763 | fprintf(stderr, Name ": add failed for %s: mdmon not running\n", | |
764 | dv->devname); | |
765 | close(container_fd); | |
766 | return 1; | |
767 | } | |
768 | ||
769 | sra = sysfs_read(container_fd, -1, 0); | |
770 | if (!sra) { | |
771 | fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", | |
772 | dv->devname); | |
773 | close(container_fd); | |
774 | return 1; | |
775 | } | |
776 | sra->array.level = LEVEL_CONTAINER; | |
777 | /* Need to set data_offset and component_size */ | |
778 | tst->ss->getinfo_super(tst, &new_mdi); | |
779 | new_mdi.disk.major = disc.major; | |
780 | new_mdi.disk.minor = disc.minor; | |
d23534e4 | 781 | new_mdi.recovery_start = 0; |
462906cd | 782 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { |
43dad3d6 DW |
783 | fprintf(stderr, Name ": add new device to external metadata" |
784 | " failed for %s\n", dv->devname); | |
785 | close(container_fd); | |
786 | return 1; | |
787 | } | |
788 | ping_monitor(devnum2devname(devnum)); | |
789 | sysfs_free(sra); | |
790 | close(container_fd); | |
791 | } else if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
f277ce36 NB |
792 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", |
793 | dv->devname, j, strerror(errno)); | |
682c7051 NB |
794 | return 1; |
795 | } | |
dab6685f NB |
796 | if (verbose >= 0) |
797 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
798 | break; |
799 | ||
800 | case 'r': | |
801 | /* hot remove */ | |
f7e7067b | 802 | if (tst->subarray[0]) { |
f7dd881f DW |
803 | fprintf(stderr, Name ": Cannot remove disks from a" |
804 | " \'member\' array, perform this" | |
805 | " operation on the parent container\n"); | |
98d27e39 N |
806 | if (sysfd >= 0) |
807 | close(sysfd); | |
f7dd881f | 808 | return 1; |
f94d52f4 NB |
809 | } |
810 | if (tst->ss->external) { | |
811 | /* To remove a device from a container, we must | |
812 | * check that it isn't in use in an array. | |
813 | * This involves looking in the 'holders' | |
814 | * directory - there must be just one entry, | |
815 | * the container. | |
816 | * To ensure that it doesn't get used as a | |
817 | * hold spare while we are checking, we | |
818 | * get an O_EXCL open on the container | |
819 | */ | |
820 | int dnum = fd2devnum(fd); | |
821 | lfd = open_dev_excl(dnum); | |
822 | if (lfd < 0) { | |
823 | fprintf(stderr, Name | |
824 | ": Cannot get exclusive access " | |
825 | " to container - odd\n"); | |
98d27e39 N |
826 | if (sysfd >= 0) |
827 | close(sysfd); | |
f94d52f4 NB |
828 | return 1; |
829 | } | |
85f9b5f7 DW |
830 | /* in the detached case it is not possible to |
831 | * check if we are the unique holder, so just | |
832 | * rely on the 'detached' checks | |
833 | */ | |
834 | if (strcmp(dv->devname, "detached") == 0 || | |
98d27e39 | 835 | sysfd >= 0 || |
85f9b5f7 DW |
836 | sysfs_unique_holder(dnum, stb.st_rdev)) |
837 | /* pass */; | |
838 | else { | |
f94d52f4 NB |
839 | fprintf(stderr, Name |
840 | ": %s is %s, cannot remove.\n", | |
841 | dnprintable, | |
842 | errno == EEXIST ? "still in use": | |
843 | "not a member"); | |
844 | close(lfd); | |
845 | return 1; | |
846 | } | |
847 | } | |
82b27616 | 848 | /* FIXME check that it is a current member */ |
98d27e39 N |
849 | if (sysfd >= 0) { |
850 | /* device has been removed and we don't know | |
851 | * the major:minor number | |
852 | */ | |
853 | int n = write(sysfd, "remove", 6); | |
854 | if (n != 6) | |
f94d52f4 | 855 | err = -1; |
98d27e39 N |
856 | else |
857 | err = 0; | |
858 | close(sysfd); | |
859 | sysfd = -1; | |
860 | } else { | |
861 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); | |
862 | if (err && errno == ENODEV) { | |
863 | /* Old kernels rejected this if no personality | |
864 | * registered */ | |
865 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
866 | struct mdinfo *dv = NULL; | |
867 | if (sra) | |
868 | dv = sra->devs; | |
869 | for ( ; dv ; dv=dv->next) | |
870 | if (dv->disk.major == major(stb.st_rdev) && | |
871 | dv->disk.minor == minor(stb.st_rdev)) | |
872 | break; | |
873 | if (dv) | |
874 | err = sysfs_set_str(sra, dv, | |
875 | "state", "remove"); | |
876 | else | |
877 | err = -1; | |
878 | if (sra) | |
879 | sysfs_free(sra); | |
880 | } | |
f94d52f4 NB |
881 | } |
882 | if (err) { | |
b80da661 NB |
883 | fprintf(stderr, Name ": hot remove failed " |
884 | "for %s: %s\n", dnprintable, | |
885 | strerror(errno)); | |
f94d52f4 NB |
886 | if (lfd >= 0) |
887 | close(lfd); | |
682c7051 NB |
888 | return 1; |
889 | } | |
313a4a82 DW |
890 | if (tst->ss->external) { |
891 | /* | |
892 | * Before dropping our exclusive open we make an | |
893 | * attempt at preventing mdmon from seeing an | |
894 | * 'add' event before reconciling this 'remove' | |
895 | * event. | |
896 | */ | |
897 | char *name = devnum2devname(fd2devnum(fd)); | |
898 | ||
899 | if (!name) { | |
900 | fprintf(stderr, Name ": unable to get container name\n"); | |
901 | return 1; | |
902 | } | |
903 | ||
904 | ping_manager(name); | |
905 | free(name); | |
906 | } | |
98d27e39 N |
907 | if (lfd >= 0) |
908 | close(lfd); | |
dab6685f | 909 | if (verbose >= 0) |
29ba4804 N |
910 | fprintf(stderr, Name ": hot removed %s from %s\n", |
911 | dnprintable, devname); | |
682c7051 NB |
912 | break; |
913 | ||
914 | case 'f': /* set faulty */ | |
915 | /* FIXME check current member */ | |
98d27e39 N |
916 | if ((sysfd >= 0 && write(sysfd, "faulty", 6) != 6) || |
917 | (sysfd < 0 && ioctl(fd, SET_DISK_FAULTY, | |
918 | (unsigned long) stb.st_rdev))) { | |
b83d95f3 | 919 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 920 | dnprintable, strerror(errno)); |
98d27e39 N |
921 | if (sysfd >= 0) |
922 | close(sysfd); | |
682c7051 NB |
923 | return 1; |
924 | } | |
98d27e39 N |
925 | if (sysfd >= 0) |
926 | close(sysfd); | |
927 | sysfd = -1; | |
dab6685f NB |
928 | if (verbose >= 0) |
929 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 930 | dnprintable, devname); |
682c7051 NB |
931 | break; |
932 | } | |
933 | } | |
934 | return 0; | |
aba69144 | 935 | |
64c4757e | 936 | } |
1f48664b NB |
937 | |
938 | int autodetect(void) | |
939 | { | |
940 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
941 | int rv = 1; | |
942 | int fd = dev_open("9:0", O_RDONLY); | |
943 | if (fd >= 0) { | |
944 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
945 | rv = 0; | |
946 | close(fd); | |
947 | } | |
948 | return rv; | |
949 | } | |
435d4ebb | 950 | #endif |