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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 | |
143 | path = NULL; | |
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 | } | |
164 | } | |
165 | ||
166 | ||
91f068bf | 167 | int Manage_runstop(char *devname, int fd, int runstop, int quiet) |
64c4757e | 168 | { |
682c7051 NB |
169 | /* Run or stop the array. array must already be configured |
170 | * required >= 0.90.0 | |
4b9d39fc N |
171 | * Only print failure messages if quiet == 0; |
172 | * quiet > 0 means really be quiet | |
173 | * quiet < 0 means we will try again if it fails. | |
682c7051 | 174 | */ |
682c7051 | 175 | mdu_param_t param; /* unused */ |
82b27616 NB |
176 | |
177 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
178 | if (ioctl(fd, STOP_MD, 0)) { | |
4b9d39fc N |
179 | if (quiet == 0) fprintf(stderr, |
180 | Name ": stopping device %s " | |
181 | "failed: %s\n", | |
182 | devname, strerror(errno)); | |
82b27616 NB |
183 | return 1; |
184 | } | |
185 | } | |
aba69144 | 186 | |
682c7051 NB |
187 | if (md_get_version(fd) < 9000) { |
188 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
189 | return 1; | |
190 | } | |
82b27616 | 191 | /* |
682c7051 NB |
192 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
193 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
194 | devname); | |
195 | return 1; | |
196 | } | |
82b27616 | 197 | */ |
682c7051 NB |
198 | if (runstop>0) { |
199 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
200 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
201 | devname, strerror(errno)); | |
202 | return 1; | |
203 | } | |
8382f19b NB |
204 | if (quiet <= 0) |
205 | fprintf(stderr, Name ": started %s\n", devname); | |
682c7051 | 206 | } else if (runstop < 0){ |
8382f19b NB |
207 | struct map_ent *map = NULL; |
208 | struct stat stb; | |
daf7a3ce | 209 | struct mdinfo *mdi; |
4ccad7b1 | 210 | int devnum; |
daf7a3ce NB |
211 | /* If this is an mdmon managed array, just write 'inactive' |
212 | * to the array state and let mdmon clear up. | |
213 | */ | |
4ccad7b1 | 214 | devnum = fd2devnum(fd); |
daf7a3ce NB |
215 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); |
216 | if (mdi && | |
217 | mdi->array.level > 0 && | |
3c558363 | 218 | is_subarray(mdi->text_version)) { |
daf7a3ce NB |
219 | /* This is mdmon managed. */ |
220 | close(fd); | |
221 | if (sysfs_set_str(mdi, NULL, | |
222 | "array_state", "inactive") < 0) { | |
4b9d39fc | 223 | if (quiet == 0) |
daf7a3ce | 224 | fprintf(stderr, Name |
4b9d39fc | 225 | ": failed to stop array %s: %s\n", |
daf7a3ce NB |
226 | devname, strerror(errno)); |
227 | return 1; | |
228 | } | |
229 | ||
230 | /* Give monitor a chance to act */ | |
c94709e8 | 231 | ping_monitor(mdi->text_version); |
daf7a3ce NB |
232 | |
233 | fd = open(devname, O_RDONLY); | |
ada6c239 N |
234 | } else if (mdi && |
235 | mdi->array.major_version == -1 && | |
236 | mdi->array.minor_version == -2 && | |
3c558363 | 237 | !is_subarray(mdi->text_version)) { |
ada6c239 N |
238 | /* container, possibly mdmon-managed. |
239 | * Make sure mdmon isn't opening it, which | |
240 | * would interfere with the 'stop' | |
241 | */ | |
242 | ping_monitor(mdi->sys_name); | |
daf7a3ce | 243 | } |
daf7a3ce NB |
244 | |
245 | if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) { | |
37ea3936 | 246 | if (quiet == 0) { |
daf7a3ce | 247 | fprintf(stderr, Name |
4b9d39fc | 248 | ": failed to stop array %s: %s\n", |
91f068bf | 249 | devname, strerror(errno)); |
d927f3c4 NB |
250 | if (errno == EBUSY) |
251 | fprintf(stderr, "Perhaps a running " | |
252 | "process, mounted filesystem " | |
253 | "or active volume group?\n"); | |
254 | } | |
97590376 N |
255 | if (mdi) |
256 | sysfs_free(mdi); | |
682c7051 NB |
257 | return 1; |
258 | } | |
97590376 | 259 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array |
d49410d3 N |
260 | * was stopped, so We'll do it here just to be sure. Drop any |
261 | * partitions as well... | |
97590376 | 262 | */ |
d49410d3 N |
263 | if (fd >= 0) |
264 | ioctl(fd, BLKRRPART, 0); | |
97590376 N |
265 | if (mdi) |
266 | sysfs_uevent(mdi, "change"); | |
daf7a3ce | 267 | |
4ccad7b1 N |
268 | |
269 | if (devnum != NoMdDev && | |
270 | (stat("/dev/.udev", &stb) != 0 || | |
271 | check_env("MDADM_NO_UDEV"))) { | |
272 | struct map_ent *mp = map_by_devnum(&map, devnum); | |
273 | remove_devices(devnum, mp ? mp->path : NULL); | |
274 | } | |
275 | ||
276 | ||
ab56093f NB |
277 | if (quiet <= 0) |
278 | fprintf(stderr, Name ": stopped %s\n", devname); | |
4ccad7b1 | 279 | if (devnum != NoMdDev) { |
8382f19b NB |
280 | map_delete(&map, devnum); |
281 | map_write(map); | |
282 | map_free(map); | |
283 | } | |
682c7051 NB |
284 | } |
285 | return 0; | |
64c4757e NB |
286 | } |
287 | ||
dd0781e5 NB |
288 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
289 | { | |
290 | mdu_array_info_t info; | |
291 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
292 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
293 | devname, strerror(errno)); | |
294 | return 1; | |
295 | } | |
296 | if (size >= 0) | |
297 | info.size = size; | |
298 | if (raid_disks > 0) | |
299 | info.raid_disks = raid_disks; | |
300 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
301 | fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n", | |
302 | devname, strerror(errno)); | |
303 | return 1; | |
304 | } | |
305 | return 0; | |
b5e64645 | 306 | } |
dd0781e5 | 307 | |
64c4757e | 308 | int Manage_subdevs(char *devname, int fd, |
dab6685f | 309 | mddev_dev_t devlist, int verbose) |
cd29a5c8 | 310 | { |
682c7051 NB |
311 | /* do something to each dev. |
312 | * devmode can be | |
313 | * 'a' - add the device | |
314 | * try HOT_ADD_DISK | |
315 | * If that fails EINVAL, try ADD_NEW_DISK | |
316 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
317 | * device can be 'faulty' or 'detached' in which case all |
318 | * matching devices are removed. | |
682c7051 | 319 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
320 | * device can be 'detached' in which case any device that |
321 | * is inaccessible will be marked faulty. | |
682c7051 NB |
322 | */ |
323 | mdu_array_info_t array; | |
324 | mdu_disk_info_t disc; | |
7a3be72f | 325 | unsigned long long array_size; |
b80da661 | 326 | mddev_dev_t dv, next = NULL; |
682c7051 | 327 | struct stat stb; |
b80da661 | 328 | int j, jnext = 0; |
0fbf459d | 329 | int tfd; |
3da92f27 | 330 | struct supertype *st, *tst; |
fe80f49b NB |
331 | int duuid[4]; |
332 | int ouuid[4]; | |
f94d52f4 | 333 | int lfd = -1; |
682c7051 NB |
334 | |
335 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
336 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
337 | devname); | |
338 | return 1; | |
339 | } | |
3da92f27 | 340 | |
7a3be72f NB |
341 | /* array.size is only 32 bit and may be truncated. |
342 | * So read from sysfs if possible, and record number of sectors | |
343 | */ | |
344 | ||
345 | array_size = get_component_size(fd); | |
346 | if (array_size <= 0) | |
347 | array_size = array.size * 2; | |
348 | ||
1686dc25 | 349 | tst = super_by_fd(fd); |
3da92f27 NB |
350 | if (!tst) { |
351 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
352 | array.major_version, array.minor_version); | |
353 | return 1; | |
354 | } | |
355 | ||
b80da661 | 356 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 357 | unsigned long long ldsize; |
b80da661 NB |
358 | char dvname[20]; |
359 | char *dnprintable = dv->devname; | |
f94d52f4 | 360 | int err; |
4a39c6f2 | 361 | |
b80da661 NB |
362 | next = dv->next; |
363 | jnext = 0; | |
364 | ||
365 | if (strcmp(dv->devname, "failed")==0 || | |
366 | strcmp(dv->devname, "faulty")==0) { | |
367 | if (dv->disposition != 'r') { | |
368 | fprintf(stderr, Name ": %s only meaningful " | |
369 | "with -r, not -%c\n", | |
370 | dv->devname, dv->disposition); | |
371 | return 1; | |
372 | } | |
373 | for (; j < array.raid_disks + array.nr_disks ; j++) { | |
374 | disc.number = j; | |
375 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
376 | continue; | |
377 | if (disc.major == 0 && disc.minor == 0) | |
378 | continue; | |
379 | if ((disc.state & 1) == 0) /* faulty */ | |
380 | continue; | |
381 | stb.st_rdev = makedev(disc.major, disc.minor); | |
382 | next = dv; | |
383 | jnext = j+1; | |
384 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
385 | dnprintable = dvname; | |
386 | break; | |
387 | } | |
388 | if (jnext == 0) | |
389 | continue; | |
390 | } else if (strcmp(dv->devname, "detached") == 0) { | |
391 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
392 | fprintf(stderr, Name ": %s only meaningful " | |
393 | "with -r of -f, not -%c\n", | |
394 | dv->devname, dv->disposition); | |
395 | return 1; | |
396 | } | |
397 | for (; j < array.raid_disks + array.nr_disks; j++) { | |
398 | int sfd; | |
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 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
405 | sfd = dev_open(dvname, O_RDONLY); | |
406 | if (sfd >= 0) { | |
407 | close(sfd); | |
408 | continue; | |
409 | } | |
410 | if (dv->disposition == 'f' && | |
411 | (disc.state & 1) == 1) /* already faulty */ | |
412 | continue; | |
413 | if (errno != ENXIO) | |
414 | continue; | |
415 | stb.st_rdev = makedev(disc.major, disc.minor); | |
416 | next = dv; | |
417 | jnext = j+1; | |
418 | dnprintable = dvname; | |
419 | break; | |
420 | } | |
421 | if (jnext == 0) | |
422 | continue; | |
423 | } else { | |
424 | j = 0; | |
425 | ||
c7b47447 N |
426 | tfd = dev_open(dv->devname, O_RDONLY); |
427 | if (tfd < 0 || fstat(tfd, &stb) != 0) { | |
b80da661 NB |
428 | fprintf(stderr, Name ": cannot find %s: %s\n", |
429 | dv->devname, strerror(errno)); | |
c7b47447 N |
430 | if (tfd >= 0) |
431 | close(tfd); | |
b80da661 NB |
432 | return 1; |
433 | } | |
c7b47447 | 434 | close(tfd); |
b80da661 NB |
435 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
436 | fprintf(stderr, Name ": %s is not a " | |
437 | "block device.\n", | |
438 | dv->devname); | |
439 | return 1; | |
440 | } | |
682c7051 | 441 | } |
cd29a5c8 | 442 | switch(dv->disposition){ |
682c7051 | 443 | default: |
c913b90e NB |
444 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
445 | dv->devname, dv->disposition); | |
682c7051 NB |
446 | return 1; |
447 | case 'a': | |
4a39c6f2 | 448 | /* add the device */ |
f7e7067b | 449 | if (tst->subarray[0]) { |
f7dd881f DW |
450 | fprintf(stderr, Name ": Cannot add disks to a" |
451 | " \'member\' array, perform this" | |
452 | " operation on the parent container\n"); | |
453 | return 1; | |
f94d52f4 | 454 | } |
f277ce36 | 455 | /* Make sure it isn't in use (in 2.6 or later) */ |
3b435195 | 456 | tfd = dev_open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT); |
0fbf459d | 457 | if (tfd < 0) { |
d7eaf49f NB |
458 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
459 | dv->devname, strerror(errno)); | |
460 | return 1; | |
461 | } | |
25037aa8 | 462 | remove_partitions(tfd); |
3da92f27 | 463 | |
1686dc25 | 464 | st = dup_super(tst); |
3da92f27 | 465 | |
fe80f49b | 466 | if (array.not_persistent==0) |
3da92f27 NB |
467 | st->ss->load_super(st, tfd, NULL); |
468 | ||
beae1dfe | 469 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { |
4a39c6f2 NB |
470 | close(tfd); |
471 | return 1; | |
4a39c6f2 | 472 | } |
0fbf459d | 473 | close(tfd); |
fe80f49b | 474 | |
f94d52f4 NB |
475 | |
476 | if (!tst->ss->external && | |
477 | array.major_version == 0 && | |
60d9a174 | 478 | md_get_version(fd)%100 < 2) { |
892debc8 NB |
479 | if (ioctl(fd, HOT_ADD_DISK, |
480 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
481 | if (verbose >= 0) |
482 | fprintf(stderr, Name ": hot added %s\n", | |
483 | dv->devname); | |
892debc8 NB |
484 | continue; |
485 | } | |
486 | ||
cd29a5c8 | 487 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
892debc8 | 488 | dv->devname, strerror(errno)); |
cd29a5c8 NB |
489 | return 1; |
490 | } | |
892debc8 | 491 | |
43dad3d6 | 492 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 493 | |
fe80f49b | 494 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
495 | * a spare slot to use. |
496 | * For 'external' array (well, container based), | |
497 | * We can just load the metadata for the array. | |
fe80f49b | 498 | */ |
43dad3d6 DW |
499 | if (tst->ss->external) { |
500 | tst->ss->load_super(tst, fd, NULL); | |
501 | } else for (j = 0; j < tst->max_devs; j++) { | |
fe80f49b NB |
502 | char *dev; |
503 | int dfd; | |
504 | disc.number = j; | |
505 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
506 | continue; | |
507 | if (disc.major==0 && disc.minor==0) | |
508 | continue; | |
509 | if ((disc.state & 4)==0) continue; /* sync */ | |
510 | /* Looks like a good device to try */ | |
16c6fa80 | 511 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 512 | if (!dev) continue; |
16c6fa80 | 513 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 514 | if (dfd < 0) continue; |
3da92f27 NB |
515 | if (tst->ss->load_super(tst, dfd, |
516 | NULL)) { | |
fe80f49b NB |
517 | close(dfd); |
518 | continue; | |
519 | } | |
892debc8 | 520 | close(dfd); |
fe80f49b NB |
521 | break; |
522 | } | |
43dad3d6 | 523 | /* FIXME this is a bad test to be using */ |
3da92f27 | 524 | if (!tst->sb) { |
fe80f49b NB |
525 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); |
526 | return 1; | |
527 | } | |
2a528478 N |
528 | |
529 | /* Make sure device is large enough */ | |
530 | if (tst->ss->avail_size(tst, ldsize/512) < | |
531 | array_size) { | |
532 | fprintf(stderr, Name ": %s not large enough to join array\n", | |
533 | dv->devname); | |
534 | return 1; | |
535 | } | |
536 | ||
fe80f49b NB |
537 | /* Possibly this device was recently part of the array |
538 | * and was temporarily removed, and is now being re-added. | |
539 | * If so, we can simply re-add it. | |
540 | */ | |
3da92f27 | 541 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 NB |
542 | |
543 | /* re-add doesn't work for version-1 superblocks | |
544 | * before 2.6.18 :-( | |
545 | */ | |
546 | if (array.major_version == 1 && | |
547 | get_linux_version() <= 2006018) | |
548 | ; | |
3da92f27 NB |
549 | else if (st->sb) { |
550 | st->ss->uuid_from_super(st, ouuid); | |
fe80f49b | 551 | if (memcmp(duuid, ouuid, sizeof(ouuid))==0) { |
4d20d744 NB |
552 | /* looks close enough for now. Kernel |
553 | * will worry about whether a bitmap | |
554 | * based reconstruction is possible. | |
fe80f49b NB |
555 | */ |
556 | struct mdinfo mdi; | |
3da92f27 | 557 | st->ss->getinfo_super(st, &mdi); |
fe80f49b NB |
558 | disc.major = major(stb.st_rdev); |
559 | disc.minor = minor(stb.st_rdev); | |
560 | disc.number = mdi.disk.number; | |
561 | disc.raid_disk = mdi.disk.raid_disk; | |
562 | disc.state = mdi.disk.state; | |
b3d31955 | 563 | if (dv->writemostly == 1) |
4d20d744 | 564 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
565 | if (dv->writemostly == 2) |
566 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
fe80f49b NB |
567 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
568 | if (verbose >= 0) | |
569 | fprintf(stderr, Name ": re-added %s\n", dv->devname); | |
308e1801 | 570 | continue; |
fe80f49b | 571 | } |
c9f39c1b N |
572 | if (errno == ENOMEM || errno == EROFS) { |
573 | fprintf(stderr, Name ": add new device failed for %s: %s\n", | |
574 | dv->devname, strerror(errno)); | |
575 | return 1; | |
576 | } | |
fe80f49b NB |
577 | /* fall back on normal-add */ |
578 | } | |
892debc8 | 579 | } |
4a39c6f2 NB |
580 | } else { |
581 | /* non-persistent. Must ensure that new drive | |
582 | * is at least array.size big. | |
583 | */ | |
7a3be72f | 584 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
585 | fprintf(stderr, Name ": %s not large enough to join array\n", |
586 | dv->devname); | |
587 | return 1; | |
588 | } | |
892debc8 | 589 | } |
7eae7080 NB |
590 | /* in 2.6.17 and earlier, version-1 superblocks won't |
591 | * use the number we write, but will choose a free number. | |
592 | * we must choose the same free number, which requires | |
593 | * starting at 'raid_disks' and counting up | |
594 | */ | |
3da92f27 | 595 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 596 | disc.number = j; |
682c7051 NB |
597 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
598 | break; | |
599 | if (disc.major==0 && disc.minor==0) | |
600 | break; | |
601 | if (disc.state & 8) /* removed */ | |
602 | break; | |
603 | } | |
0df46c2a NB |
604 | disc.major = major(stb.st_rdev); |
605 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
606 | disc.number =j; |
607 | disc.state = 0; | |
43dad3d6 | 608 | if (array.not_persistent==0 || tst->ss->external) { |
111d01fc | 609 | int dfd; |
b3d31955 | 610 | if (dv->writemostly == 1) |
fe80f49b | 611 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
3b435195 | 612 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
f20c3968 DW |
613 | if (tst->ss->add_to_super(tst, &disc, dfd, |
614 | dv->devname)) { | |
f20c3968 DW |
615 | close(dfd); |
616 | return 1; | |
617 | } | |
111d01fc | 618 | /* write_init_super will close 'dfd' */ |
43dad3d6 DW |
619 | if (tst->ss->external) |
620 | /* mdmon will write the metadata */ | |
621 | close(dfd); | |
622 | else if (tst->ss->write_init_super(tst)) | |
fe80f49b NB |
623 | return 1; |
624 | } else if (dv->re_add) { | |
625 | /* this had better be raid1. | |
626 | * As we are "--re-add"ing we must find a spare slot | |
627 | * to fill. | |
628 | */ | |
629 | char *used = malloc(array.raid_disks); | |
630 | memset(used, 0, array.raid_disks); | |
3da92f27 | 631 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
632 | mdu_disk_info_t disc2; |
633 | disc2.number = j; | |
634 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
635 | continue; | |
636 | if (disc2.major==0 && disc2.minor==0) | |
637 | continue; | |
638 | if (disc2.state & 8) /* removed */ | |
639 | continue; | |
640 | if (disc2.raid_disk < 0) | |
641 | continue; | |
642 | if (disc2.raid_disk > array.raid_disks) | |
643 | continue; | |
644 | used[disc2.raid_disk] = 1; | |
645 | } | |
646 | for (j=0 ; j<array.raid_disks; j++) | |
647 | if (!used[j]) { | |
648 | disc.raid_disk = j; | |
649 | disc.state |= (1<<MD_DISK_SYNC); | |
650 | break; | |
651 | } | |
652 | } | |
b3d31955 | 653 | if (dv->writemostly == 1) |
d8def61c | 654 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 DW |
655 | if (tst->ss->external) { |
656 | /* add a disk to an external metadata container | |
657 | * only if mdmon is around to see it | |
658 | */ | |
659 | struct mdinfo new_mdi; | |
660 | struct mdinfo *sra; | |
661 | int container_fd; | |
662 | int devnum = fd2devnum(fd); | |
663 | ||
664 | container_fd = open_dev_excl(devnum); | |
665 | if (container_fd < 0) { | |
666 | fprintf(stderr, Name ": add failed for %s:" | |
667 | " could not get exclusive access to container\n", | |
668 | dv->devname); | |
669 | return 1; | |
670 | } | |
671 | ||
672 | if (!mdmon_running(devnum)) { | |
673 | fprintf(stderr, Name ": add failed for %s: mdmon not running\n", | |
674 | dv->devname); | |
675 | close(container_fd); | |
676 | return 1; | |
677 | } | |
678 | ||
679 | sra = sysfs_read(container_fd, -1, 0); | |
680 | if (!sra) { | |
681 | fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", | |
682 | dv->devname); | |
683 | close(container_fd); | |
684 | return 1; | |
685 | } | |
686 | sra->array.level = LEVEL_CONTAINER; | |
687 | /* Need to set data_offset and component_size */ | |
688 | tst->ss->getinfo_super(tst, &new_mdi); | |
689 | new_mdi.disk.major = disc.major; | |
690 | new_mdi.disk.minor = disc.minor; | |
462906cd | 691 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { |
43dad3d6 DW |
692 | fprintf(stderr, Name ": add new device to external metadata" |
693 | " failed for %s\n", dv->devname); | |
694 | close(container_fd); | |
695 | return 1; | |
696 | } | |
697 | ping_monitor(devnum2devname(devnum)); | |
698 | sysfs_free(sra); | |
699 | close(container_fd); | |
700 | } else if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
f277ce36 NB |
701 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", |
702 | dv->devname, j, strerror(errno)); | |
682c7051 NB |
703 | return 1; |
704 | } | |
dab6685f NB |
705 | if (verbose >= 0) |
706 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
707 | break; |
708 | ||
709 | case 'r': | |
710 | /* hot remove */ | |
f7e7067b | 711 | if (tst->subarray[0]) { |
f7dd881f DW |
712 | fprintf(stderr, Name ": Cannot remove disks from a" |
713 | " \'member\' array, perform this" | |
714 | " operation on the parent container\n"); | |
715 | return 1; | |
f94d52f4 NB |
716 | } |
717 | if (tst->ss->external) { | |
718 | /* To remove a device from a container, we must | |
719 | * check that it isn't in use in an array. | |
720 | * This involves looking in the 'holders' | |
721 | * directory - there must be just one entry, | |
722 | * the container. | |
723 | * To ensure that it doesn't get used as a | |
724 | * hold spare while we are checking, we | |
725 | * get an O_EXCL open on the container | |
726 | */ | |
727 | int dnum = fd2devnum(fd); | |
728 | lfd = open_dev_excl(dnum); | |
729 | if (lfd < 0) { | |
730 | fprintf(stderr, Name | |
731 | ": Cannot get exclusive access " | |
732 | " to container - odd\n"); | |
733 | return 1; | |
734 | } | |
85f9b5f7 DW |
735 | /* in the detached case it is not possible to |
736 | * check if we are the unique holder, so just | |
737 | * rely on the 'detached' checks | |
738 | */ | |
739 | if (strcmp(dv->devname, "detached") == 0 || | |
740 | sysfs_unique_holder(dnum, stb.st_rdev)) | |
741 | /* pass */; | |
742 | else { | |
f94d52f4 NB |
743 | fprintf(stderr, Name |
744 | ": %s is %s, cannot remove.\n", | |
745 | dnprintable, | |
746 | errno == EEXIST ? "still in use": | |
747 | "not a member"); | |
748 | close(lfd); | |
749 | return 1; | |
750 | } | |
751 | } | |
82b27616 | 752 | /* FIXME check that it is a current member */ |
f94d52f4 NB |
753 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); |
754 | if (err && errno == ENODEV) { | |
755 | /* Old kernels rejected this if no personality | |
756 | * registered */ | |
757 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
758 | struct mdinfo *dv = NULL; | |
759 | if (sra) | |
760 | dv = sra->devs; | |
761 | for ( ; dv ; dv=dv->next) | |
762 | if (dv->disk.major == major(stb.st_rdev) && | |
763 | dv->disk.minor == minor(stb.st_rdev)) | |
764 | break; | |
765 | if (dv) | |
766 | err = sysfs_set_str(sra, dv, | |
767 | "state", "remove"); | |
768 | else | |
769 | err = -1; | |
770 | if (sra) | |
771 | sysfs_free(sra); | |
772 | } | |
773 | if (err) { | |
b80da661 NB |
774 | fprintf(stderr, Name ": hot remove failed " |
775 | "for %s: %s\n", dnprintable, | |
776 | strerror(errno)); | |
f94d52f4 NB |
777 | if (lfd >= 0) |
778 | close(lfd); | |
682c7051 NB |
779 | return 1; |
780 | } | |
313a4a82 DW |
781 | if (tst->ss->external) { |
782 | /* | |
783 | * Before dropping our exclusive open we make an | |
784 | * attempt at preventing mdmon from seeing an | |
785 | * 'add' event before reconciling this 'remove' | |
786 | * event. | |
787 | */ | |
788 | char *name = devnum2devname(fd2devnum(fd)); | |
789 | ||
790 | if (!name) { | |
791 | fprintf(stderr, Name ": unable to get container name\n"); | |
792 | return 1; | |
793 | } | |
794 | ||
795 | ping_manager(name); | |
796 | free(name); | |
797 | } | |
f94d52f4 | 798 | close(lfd); |
dab6685f | 799 | if (verbose >= 0) |
b80da661 NB |
800 | fprintf(stderr, Name ": hot removed %s\n", |
801 | dnprintable); | |
682c7051 NB |
802 | break; |
803 | ||
804 | case 'f': /* set faulty */ | |
805 | /* FIXME check current member */ | |
cd29a5c8 | 806 | if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) { |
b83d95f3 | 807 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 808 | dnprintable, strerror(errno)); |
682c7051 NB |
809 | return 1; |
810 | } | |
dab6685f NB |
811 | if (verbose >= 0) |
812 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 813 | dnprintable, devname); |
682c7051 NB |
814 | break; |
815 | } | |
816 | } | |
817 | return 0; | |
aba69144 | 818 | |
64c4757e | 819 | } |
1f48664b NB |
820 | |
821 | int autodetect(void) | |
822 | { | |
823 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
824 | int rv = 1; | |
825 | int fd = dev_open("9:0", O_RDONLY); | |
826 | if (fd >= 0) { | |
827 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
828 | rv = 0; | |
829 | close(fd); | |
830 | } | |
831 | return rv; | |
832 | } | |
435d4ebb | 833 | #endif |