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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; | |
306 | } | |
307 | ||
b5e64645 NB |
308 | int Manage_reconfig(char *devname, int fd, int layout) |
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 | info.layout = layout; | |
317 | printf("layout set to %d\n", info.layout); | |
318 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
319 | fprintf(stderr, Name ": Cannot set layout for %s: %s\n", | |
320 | devname, strerror(errno)); | |
321 | return 1; | |
322 | } | |
323 | return 0; | |
324 | } | |
dd0781e5 | 325 | |
64c4757e | 326 | int Manage_subdevs(char *devname, int fd, |
dab6685f | 327 | mddev_dev_t devlist, int verbose) |
cd29a5c8 | 328 | { |
682c7051 NB |
329 | /* do something to each dev. |
330 | * devmode can be | |
331 | * 'a' - add the device | |
332 | * try HOT_ADD_DISK | |
333 | * If that fails EINVAL, try ADD_NEW_DISK | |
334 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
335 | * device can be 'faulty' or 'detached' in which case all |
336 | * matching devices are removed. | |
682c7051 | 337 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
338 | * device can be 'detached' in which case any device that |
339 | * is inaccessible will be marked faulty. | |
682c7051 NB |
340 | */ |
341 | mdu_array_info_t array; | |
342 | mdu_disk_info_t disc; | |
7a3be72f | 343 | unsigned long long array_size; |
b80da661 | 344 | mddev_dev_t dv, next = NULL; |
682c7051 | 345 | struct stat stb; |
b80da661 | 346 | int j, jnext = 0; |
0fbf459d | 347 | int tfd; |
3da92f27 | 348 | struct supertype *st, *tst; |
fe80f49b NB |
349 | int duuid[4]; |
350 | int ouuid[4]; | |
f94d52f4 | 351 | int lfd = -1; |
682c7051 NB |
352 | |
353 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
354 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
355 | devname); | |
356 | return 1; | |
357 | } | |
3da92f27 | 358 | |
7a3be72f NB |
359 | /* array.size is only 32 bit and may be truncated. |
360 | * So read from sysfs if possible, and record number of sectors | |
361 | */ | |
362 | ||
363 | array_size = get_component_size(fd); | |
364 | if (array_size <= 0) | |
365 | array_size = array.size * 2; | |
366 | ||
1686dc25 | 367 | tst = super_by_fd(fd); |
3da92f27 NB |
368 | if (!tst) { |
369 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
370 | array.major_version, array.minor_version); | |
371 | return 1; | |
372 | } | |
373 | ||
b80da661 | 374 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 375 | unsigned long long ldsize; |
b80da661 NB |
376 | char dvname[20]; |
377 | char *dnprintable = dv->devname; | |
f94d52f4 | 378 | int err; |
4a39c6f2 | 379 | |
b80da661 NB |
380 | next = dv->next; |
381 | jnext = 0; | |
382 | ||
383 | if (strcmp(dv->devname, "failed")==0 || | |
384 | strcmp(dv->devname, "faulty")==0) { | |
385 | if (dv->disposition != 'r') { | |
386 | fprintf(stderr, Name ": %s only meaningful " | |
387 | "with -r, not -%c\n", | |
388 | dv->devname, dv->disposition); | |
389 | return 1; | |
390 | } | |
391 | for (; j < array.raid_disks + array.nr_disks ; j++) { | |
392 | disc.number = j; | |
393 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
394 | continue; | |
395 | if (disc.major == 0 && disc.minor == 0) | |
396 | continue; | |
397 | if ((disc.state & 1) == 0) /* faulty */ | |
398 | continue; | |
399 | stb.st_rdev = makedev(disc.major, disc.minor); | |
400 | next = dv; | |
401 | jnext = j+1; | |
402 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
403 | dnprintable = dvname; | |
404 | break; | |
405 | } | |
406 | if (jnext == 0) | |
407 | continue; | |
408 | } else if (strcmp(dv->devname, "detached") == 0) { | |
409 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
410 | fprintf(stderr, Name ": %s only meaningful " | |
411 | "with -r of -f, not -%c\n", | |
412 | dv->devname, dv->disposition); | |
413 | return 1; | |
414 | } | |
415 | for (; j < array.raid_disks + array.nr_disks; j++) { | |
416 | int sfd; | |
417 | disc.number = j; | |
418 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
419 | continue; | |
420 | if (disc.major == 0 && disc.minor == 0) | |
421 | continue; | |
422 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
423 | sfd = dev_open(dvname, O_RDONLY); | |
424 | if (sfd >= 0) { | |
425 | close(sfd); | |
426 | continue; | |
427 | } | |
428 | if (dv->disposition == 'f' && | |
429 | (disc.state & 1) == 1) /* already faulty */ | |
430 | continue; | |
431 | if (errno != ENXIO) | |
432 | continue; | |
433 | stb.st_rdev = makedev(disc.major, disc.minor); | |
434 | next = dv; | |
435 | jnext = j+1; | |
436 | dnprintable = dvname; | |
437 | break; | |
438 | } | |
439 | if (jnext == 0) | |
440 | continue; | |
441 | } else { | |
442 | j = 0; | |
443 | ||
c7b47447 N |
444 | tfd = dev_open(dv->devname, O_RDONLY); |
445 | if (tfd < 0 || fstat(tfd, &stb) != 0) { | |
b80da661 NB |
446 | fprintf(stderr, Name ": cannot find %s: %s\n", |
447 | dv->devname, strerror(errno)); | |
c7b47447 N |
448 | if (tfd >= 0) |
449 | close(tfd); | |
b80da661 NB |
450 | return 1; |
451 | } | |
c7b47447 | 452 | close(tfd); |
b80da661 NB |
453 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
454 | fprintf(stderr, Name ": %s is not a " | |
455 | "block device.\n", | |
456 | dv->devname); | |
457 | return 1; | |
458 | } | |
682c7051 | 459 | } |
cd29a5c8 | 460 | switch(dv->disposition){ |
682c7051 | 461 | default: |
c913b90e NB |
462 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
463 | dv->devname, dv->disposition); | |
682c7051 NB |
464 | return 1; |
465 | case 'a': | |
4a39c6f2 | 466 | /* add the device */ |
f7e7067b | 467 | if (tst->subarray[0]) { |
f7dd881f DW |
468 | fprintf(stderr, Name ": Cannot add disks to a" |
469 | " \'member\' array, perform this" | |
470 | " operation on the parent container\n"); | |
471 | return 1; | |
f94d52f4 | 472 | } |
f277ce36 | 473 | /* Make sure it isn't in use (in 2.6 or later) */ |
3b435195 | 474 | tfd = dev_open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT); |
0fbf459d | 475 | if (tfd < 0) { |
d7eaf49f NB |
476 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
477 | dv->devname, strerror(errno)); | |
478 | return 1; | |
479 | } | |
25037aa8 | 480 | remove_partitions(tfd); |
3da92f27 | 481 | |
1686dc25 | 482 | st = dup_super(tst); |
3da92f27 | 483 | |
fe80f49b | 484 | if (array.not_persistent==0) |
3da92f27 NB |
485 | st->ss->load_super(st, tfd, NULL); |
486 | ||
beae1dfe | 487 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { |
4a39c6f2 NB |
488 | close(tfd); |
489 | return 1; | |
4a39c6f2 | 490 | } |
0fbf459d | 491 | close(tfd); |
fe80f49b | 492 | |
f94d52f4 NB |
493 | |
494 | if (!tst->ss->external && | |
495 | array.major_version == 0 && | |
60d9a174 | 496 | md_get_version(fd)%100 < 2) { |
892debc8 NB |
497 | if (ioctl(fd, HOT_ADD_DISK, |
498 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
499 | if (verbose >= 0) |
500 | fprintf(stderr, Name ": hot added %s\n", | |
501 | dv->devname); | |
892debc8 NB |
502 | continue; |
503 | } | |
504 | ||
cd29a5c8 | 505 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
892debc8 | 506 | dv->devname, strerror(errno)); |
cd29a5c8 NB |
507 | return 1; |
508 | } | |
892debc8 | 509 | |
43dad3d6 | 510 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 511 | |
fe80f49b | 512 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
513 | * a spare slot to use. |
514 | * For 'external' array (well, container based), | |
515 | * We can just load the metadata for the array. | |
fe80f49b | 516 | */ |
43dad3d6 DW |
517 | if (tst->ss->external) { |
518 | tst->ss->load_super(tst, fd, NULL); | |
519 | } else for (j = 0; j < tst->max_devs; j++) { | |
fe80f49b NB |
520 | char *dev; |
521 | int dfd; | |
522 | disc.number = j; | |
523 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
524 | continue; | |
525 | if (disc.major==0 && disc.minor==0) | |
526 | continue; | |
527 | if ((disc.state & 4)==0) continue; /* sync */ | |
528 | /* Looks like a good device to try */ | |
16c6fa80 | 529 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 530 | if (!dev) continue; |
16c6fa80 | 531 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 532 | if (dfd < 0) continue; |
3da92f27 NB |
533 | if (tst->ss->load_super(tst, dfd, |
534 | NULL)) { | |
fe80f49b NB |
535 | close(dfd); |
536 | continue; | |
537 | } | |
892debc8 | 538 | close(dfd); |
fe80f49b NB |
539 | break; |
540 | } | |
43dad3d6 | 541 | /* FIXME this is a bad test to be using */ |
3da92f27 | 542 | if (!tst->sb) { |
fe80f49b NB |
543 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); |
544 | return 1; | |
545 | } | |
2a528478 N |
546 | |
547 | /* Make sure device is large enough */ | |
548 | if (tst->ss->avail_size(tst, ldsize/512) < | |
549 | array_size) { | |
550 | fprintf(stderr, Name ": %s not large enough to join array\n", | |
551 | dv->devname); | |
552 | return 1; | |
553 | } | |
554 | ||
fe80f49b NB |
555 | /* Possibly this device was recently part of the array |
556 | * and was temporarily removed, and is now being re-added. | |
557 | * If so, we can simply re-add it. | |
558 | */ | |
3da92f27 | 559 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 NB |
560 | |
561 | /* re-add doesn't work for version-1 superblocks | |
562 | * before 2.6.18 :-( | |
563 | */ | |
564 | if (array.major_version == 1 && | |
565 | get_linux_version() <= 2006018) | |
566 | ; | |
3da92f27 NB |
567 | else if (st->sb) { |
568 | st->ss->uuid_from_super(st, ouuid); | |
fe80f49b | 569 | if (memcmp(duuid, ouuid, sizeof(ouuid))==0) { |
4d20d744 NB |
570 | /* looks close enough for now. Kernel |
571 | * will worry about whether a bitmap | |
572 | * based reconstruction is possible. | |
fe80f49b NB |
573 | */ |
574 | struct mdinfo mdi; | |
3da92f27 | 575 | st->ss->getinfo_super(st, &mdi); |
fe80f49b NB |
576 | disc.major = major(stb.st_rdev); |
577 | disc.minor = minor(stb.st_rdev); | |
578 | disc.number = mdi.disk.number; | |
579 | disc.raid_disk = mdi.disk.raid_disk; | |
580 | disc.state = mdi.disk.state; | |
b3d31955 | 581 | if (dv->writemostly == 1) |
4d20d744 | 582 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
583 | if (dv->writemostly == 2) |
584 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
fe80f49b NB |
585 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
586 | if (verbose >= 0) | |
587 | fprintf(stderr, Name ": re-added %s\n", dv->devname); | |
308e1801 | 588 | continue; |
fe80f49b | 589 | } |
c9f39c1b N |
590 | if (errno == ENOMEM || errno == EROFS) { |
591 | fprintf(stderr, Name ": add new device failed for %s: %s\n", | |
592 | dv->devname, strerror(errno)); | |
593 | return 1; | |
594 | } | |
fe80f49b NB |
595 | /* fall back on normal-add */ |
596 | } | |
892debc8 | 597 | } |
4a39c6f2 NB |
598 | } else { |
599 | /* non-persistent. Must ensure that new drive | |
600 | * is at least array.size big. | |
601 | */ | |
7a3be72f | 602 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
603 | fprintf(stderr, Name ": %s not large enough to join array\n", |
604 | dv->devname); | |
605 | return 1; | |
606 | } | |
892debc8 | 607 | } |
7eae7080 NB |
608 | /* in 2.6.17 and earlier, version-1 superblocks won't |
609 | * use the number we write, but will choose a free number. | |
610 | * we must choose the same free number, which requires | |
611 | * starting at 'raid_disks' and counting up | |
612 | */ | |
3da92f27 | 613 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 614 | disc.number = j; |
682c7051 NB |
615 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
616 | break; | |
617 | if (disc.major==0 && disc.minor==0) | |
618 | break; | |
619 | if (disc.state & 8) /* removed */ | |
620 | break; | |
621 | } | |
0df46c2a NB |
622 | disc.major = major(stb.st_rdev); |
623 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
624 | disc.number =j; |
625 | disc.state = 0; | |
43dad3d6 | 626 | if (array.not_persistent==0 || tst->ss->external) { |
111d01fc | 627 | int dfd; |
b3d31955 | 628 | if (dv->writemostly == 1) |
fe80f49b | 629 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
3b435195 | 630 | dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
f20c3968 DW |
631 | if (tst->ss->add_to_super(tst, &disc, dfd, |
632 | dv->devname)) { | |
f20c3968 DW |
633 | close(dfd); |
634 | return 1; | |
635 | } | |
111d01fc | 636 | /* write_init_super will close 'dfd' */ |
43dad3d6 DW |
637 | if (tst->ss->external) |
638 | /* mdmon will write the metadata */ | |
639 | close(dfd); | |
640 | else if (tst->ss->write_init_super(tst)) | |
fe80f49b NB |
641 | return 1; |
642 | } else if (dv->re_add) { | |
643 | /* this had better be raid1. | |
644 | * As we are "--re-add"ing we must find a spare slot | |
645 | * to fill. | |
646 | */ | |
647 | char *used = malloc(array.raid_disks); | |
648 | memset(used, 0, array.raid_disks); | |
3da92f27 | 649 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
650 | mdu_disk_info_t disc2; |
651 | disc2.number = j; | |
652 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
653 | continue; | |
654 | if (disc2.major==0 && disc2.minor==0) | |
655 | continue; | |
656 | if (disc2.state & 8) /* removed */ | |
657 | continue; | |
658 | if (disc2.raid_disk < 0) | |
659 | continue; | |
660 | if (disc2.raid_disk > array.raid_disks) | |
661 | continue; | |
662 | used[disc2.raid_disk] = 1; | |
663 | } | |
664 | for (j=0 ; j<array.raid_disks; j++) | |
665 | if (!used[j]) { | |
666 | disc.raid_disk = j; | |
667 | disc.state |= (1<<MD_DISK_SYNC); | |
668 | break; | |
669 | } | |
670 | } | |
b3d31955 | 671 | if (dv->writemostly == 1) |
d8def61c | 672 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 DW |
673 | if (tst->ss->external) { |
674 | /* add a disk to an external metadata container | |
675 | * only if mdmon is around to see it | |
676 | */ | |
677 | struct mdinfo new_mdi; | |
678 | struct mdinfo *sra; | |
679 | int container_fd; | |
680 | int devnum = fd2devnum(fd); | |
681 | ||
682 | container_fd = open_dev_excl(devnum); | |
683 | if (container_fd < 0) { | |
684 | fprintf(stderr, Name ": add failed for %s:" | |
685 | " could not get exclusive access to container\n", | |
686 | dv->devname); | |
687 | return 1; | |
688 | } | |
689 | ||
690 | if (!mdmon_running(devnum)) { | |
691 | fprintf(stderr, Name ": add failed for %s: mdmon not running\n", | |
692 | dv->devname); | |
693 | close(container_fd); | |
694 | return 1; | |
695 | } | |
696 | ||
697 | sra = sysfs_read(container_fd, -1, 0); | |
698 | if (!sra) { | |
699 | fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", | |
700 | dv->devname); | |
701 | close(container_fd); | |
702 | return 1; | |
703 | } | |
704 | sra->array.level = LEVEL_CONTAINER; | |
705 | /* Need to set data_offset and component_size */ | |
706 | tst->ss->getinfo_super(tst, &new_mdi); | |
707 | new_mdi.disk.major = disc.major; | |
708 | new_mdi.disk.minor = disc.minor; | |
462906cd | 709 | if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { |
43dad3d6 DW |
710 | fprintf(stderr, Name ": add new device to external metadata" |
711 | " failed for %s\n", dv->devname); | |
712 | close(container_fd); | |
713 | return 1; | |
714 | } | |
715 | ping_monitor(devnum2devname(devnum)); | |
716 | sysfs_free(sra); | |
717 | close(container_fd); | |
718 | } else if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
f277ce36 NB |
719 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", |
720 | dv->devname, j, strerror(errno)); | |
682c7051 NB |
721 | return 1; |
722 | } | |
dab6685f NB |
723 | if (verbose >= 0) |
724 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
725 | break; |
726 | ||
727 | case 'r': | |
728 | /* hot remove */ | |
f7e7067b | 729 | if (tst->subarray[0]) { |
f7dd881f DW |
730 | fprintf(stderr, Name ": Cannot remove disks from a" |
731 | " \'member\' array, perform this" | |
732 | " operation on the parent container\n"); | |
733 | return 1; | |
f94d52f4 NB |
734 | } |
735 | if (tst->ss->external) { | |
736 | /* To remove a device from a container, we must | |
737 | * check that it isn't in use in an array. | |
738 | * This involves looking in the 'holders' | |
739 | * directory - there must be just one entry, | |
740 | * the container. | |
741 | * To ensure that it doesn't get used as a | |
742 | * hold spare while we are checking, we | |
743 | * get an O_EXCL open on the container | |
744 | */ | |
745 | int dnum = fd2devnum(fd); | |
746 | lfd = open_dev_excl(dnum); | |
747 | if (lfd < 0) { | |
748 | fprintf(stderr, Name | |
749 | ": Cannot get exclusive access " | |
750 | " to container - odd\n"); | |
751 | return 1; | |
752 | } | |
85f9b5f7 DW |
753 | /* in the detached case it is not possible to |
754 | * check if we are the unique holder, so just | |
755 | * rely on the 'detached' checks | |
756 | */ | |
757 | if (strcmp(dv->devname, "detached") == 0 || | |
758 | sysfs_unique_holder(dnum, stb.st_rdev)) | |
759 | /* pass */; | |
760 | else { | |
f94d52f4 NB |
761 | fprintf(stderr, Name |
762 | ": %s is %s, cannot remove.\n", | |
763 | dnprintable, | |
764 | errno == EEXIST ? "still in use": | |
765 | "not a member"); | |
766 | close(lfd); | |
767 | return 1; | |
768 | } | |
769 | } | |
82b27616 | 770 | /* FIXME check that it is a current member */ |
f94d52f4 NB |
771 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); |
772 | if (err && errno == ENODEV) { | |
773 | /* Old kernels rejected this if no personality | |
774 | * registered */ | |
775 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
776 | struct mdinfo *dv = NULL; | |
777 | if (sra) | |
778 | dv = sra->devs; | |
779 | for ( ; dv ; dv=dv->next) | |
780 | if (dv->disk.major == major(stb.st_rdev) && | |
781 | dv->disk.minor == minor(stb.st_rdev)) | |
782 | break; | |
783 | if (dv) | |
784 | err = sysfs_set_str(sra, dv, | |
785 | "state", "remove"); | |
786 | else | |
787 | err = -1; | |
788 | if (sra) | |
789 | sysfs_free(sra); | |
790 | } | |
791 | if (err) { | |
b80da661 NB |
792 | fprintf(stderr, Name ": hot remove failed " |
793 | "for %s: %s\n", dnprintable, | |
794 | strerror(errno)); | |
f94d52f4 NB |
795 | if (lfd >= 0) |
796 | close(lfd); | |
682c7051 NB |
797 | return 1; |
798 | } | |
313a4a82 DW |
799 | if (tst->ss->external) { |
800 | /* | |
801 | * Before dropping our exclusive open we make an | |
802 | * attempt at preventing mdmon from seeing an | |
803 | * 'add' event before reconciling this 'remove' | |
804 | * event. | |
805 | */ | |
806 | char *name = devnum2devname(fd2devnum(fd)); | |
807 | ||
808 | if (!name) { | |
809 | fprintf(stderr, Name ": unable to get container name\n"); | |
810 | return 1; | |
811 | } | |
812 | ||
813 | ping_manager(name); | |
814 | free(name); | |
815 | } | |
f94d52f4 | 816 | close(lfd); |
dab6685f | 817 | if (verbose >= 0) |
b80da661 NB |
818 | fprintf(stderr, Name ": hot removed %s\n", |
819 | dnprintable); | |
682c7051 NB |
820 | break; |
821 | ||
822 | case 'f': /* set faulty */ | |
823 | /* FIXME check current member */ | |
cd29a5c8 | 824 | if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) { |
b83d95f3 | 825 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 826 | dnprintable, strerror(errno)); |
682c7051 NB |
827 | return 1; |
828 | } | |
dab6685f NB |
829 | if (verbose >= 0) |
830 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 831 | dnprintable, devname); |
682c7051 NB |
832 | break; |
833 | } | |
834 | } | |
835 | return 0; | |
aba69144 | 836 | |
64c4757e | 837 | } |
1f48664b NB |
838 | |
839 | int autodetect(void) | |
840 | { | |
841 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
842 | int rv = 1; | |
843 | int fd = dev_open("9:0", O_RDONLY); | |
844 | if (fd >= 0) { | |
845 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
846 | rv = 0; | |
847 | close(fd); | |
848 | } | |
849 | return rv; | |
850 | } | |
435d4ebb | 851 | #endif |