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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 | * |
4f589ad0 | 4 | * Copyright (C) 2001-2006 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 | |
22 | * Email: <neilb@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | */ | |
29 | ||
9a9dab36 | 30 | #include "mdadm.h" |
682c7051 NB |
31 | #include "md_u.h" |
32 | #include "md_p.h" | |
64c4757e | 33 | |
82b27616 NB |
34 | #define REGISTER_DEV _IO (MD_MAJOR, 1) |
35 | #define START_MD _IO (MD_MAJOR, 2) | |
36 | #define STOP_MD _IO (MD_MAJOR, 3) | |
37 | ||
64c4757e NB |
38 | int Manage_ro(char *devname, int fd, int readonly) |
39 | { | |
682c7051 NB |
40 | /* switch to readonly or rw |
41 | * | |
42 | * requires >= 0.90.0 | |
43 | * first check that array is runing | |
44 | * use RESTART_ARRAY_RW or STOP_ARRAY_RO | |
45 | * | |
46 | */ | |
47 | mdu_array_info_t array; | |
e9dd1598 | 48 | struct mdinfo *mdi; |
aba69144 | 49 | |
682c7051 NB |
50 | if (md_get_version(fd) < 9000) { |
51 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
52 | return 1; | |
53 | } | |
e9dd1598 N |
54 | /* If this is an externally-manage array, we need to modify the |
55 | * metadata_version so that mdmon doesn't undo our change. | |
56 | */ | |
57 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); | |
58 | if (mdi && | |
59 | mdi->array.major_version == -1 && | |
60 | mdi->array.level > 0 && | |
61 | is_subarray(mdi->text_version)) { | |
62 | char vers[64]; | |
63 | strcpy(vers, "external:"); | |
64 | strcat(vers, mdi->text_version); | |
65 | if (readonly > 0) { | |
66 | int rv; | |
67 | /* We set readonly ourselves. */ | |
68 | vers[9] = '-'; | |
69 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
70 | ||
71 | close(fd); | |
72 | rv = sysfs_set_str(mdi, NULL, "array_state", "readonly"); | |
73 | ||
74 | if (rv < 0) { | |
75 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
76 | devname, strerror(errno)); | |
77 | ||
78 | vers[9] = mdi->text_version[0]; | |
79 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
80 | return 1; | |
81 | } | |
82 | } else { | |
83 | char *cp; | |
84 | /* We cannot set read/write - must signal mdmon */ | |
85 | vers[9] = '/'; | |
86 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
87 | ||
88 | cp = strchr(vers+10, '/'); | |
89 | if (*cp) | |
90 | *cp = 0; | |
91 | ping_monitor(vers+10); | |
92 | } | |
93 | return 0; | |
94 | } | |
95 | ||
682c7051 NB |
96 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
97 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
98 | devname); | |
99 | return 1; | |
100 | } | |
aba69144 | 101 | |
682c7051 NB |
102 | if (readonly>0) { |
103 | if (ioctl(fd, STOP_ARRAY_RO, NULL)) { | |
104 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
105 | devname, strerror(errno)); | |
106 | return 1; | |
107 | } | |
108 | } else if (readonly < 0) { | |
109 | if (ioctl(fd, RESTART_ARRAY_RW, NULL)) { | |
82b27616 | 110 | fprintf(stderr, Name ": failed to set writable for %s: %s\n", |
682c7051 NB |
111 | devname, strerror(errno)); |
112 | return 1; | |
113 | } | |
114 | } | |
aba69144 | 115 | return 0; |
64c4757e NB |
116 | } |
117 | ||
435d4ebb LB |
118 | #ifndef MDASSEMBLE |
119 | ||
91f068bf | 120 | int Manage_runstop(char *devname, int fd, int runstop, int quiet) |
64c4757e | 121 | { |
682c7051 NB |
122 | /* Run or stop the array. array must already be configured |
123 | * required >= 0.90.0 | |
4b9d39fc N |
124 | * Only print failure messages if quiet == 0; |
125 | * quiet > 0 means really be quiet | |
126 | * quiet < 0 means we will try again if it fails. | |
682c7051 | 127 | */ |
682c7051 | 128 | mdu_param_t param; /* unused */ |
82b27616 NB |
129 | |
130 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
131 | if (ioctl(fd, STOP_MD, 0)) { | |
4b9d39fc N |
132 | if (quiet == 0) fprintf(stderr, |
133 | Name ": stopping device %s " | |
134 | "failed: %s\n", | |
135 | devname, strerror(errno)); | |
82b27616 NB |
136 | return 1; |
137 | } | |
138 | } | |
aba69144 | 139 | |
682c7051 NB |
140 | if (md_get_version(fd) < 9000) { |
141 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
142 | return 1; | |
143 | } | |
82b27616 | 144 | /* |
682c7051 NB |
145 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
146 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
147 | devname); | |
148 | return 1; | |
149 | } | |
82b27616 | 150 | */ |
682c7051 NB |
151 | if (runstop>0) { |
152 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
153 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
154 | devname, strerror(errno)); | |
155 | return 1; | |
156 | } | |
8382f19b NB |
157 | if (quiet <= 0) |
158 | fprintf(stderr, Name ": started %s\n", devname); | |
682c7051 | 159 | } else if (runstop < 0){ |
8382f19b NB |
160 | struct map_ent *map = NULL; |
161 | struct stat stb; | |
daf7a3ce NB |
162 | struct mdinfo *mdi; |
163 | /* If this is an mdmon managed array, just write 'inactive' | |
164 | * to the array state and let mdmon clear up. | |
165 | */ | |
166 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); | |
167 | if (mdi && | |
168 | mdi->array.level > 0 && | |
3c558363 | 169 | is_subarray(mdi->text_version)) { |
daf7a3ce NB |
170 | /* This is mdmon managed. */ |
171 | close(fd); | |
172 | if (sysfs_set_str(mdi, NULL, | |
173 | "array_state", "inactive") < 0) { | |
4b9d39fc | 174 | if (quiet == 0) |
daf7a3ce | 175 | fprintf(stderr, Name |
4b9d39fc | 176 | ": failed to stop array %s: %s\n", |
daf7a3ce NB |
177 | devname, strerror(errno)); |
178 | return 1; | |
179 | } | |
180 | ||
181 | /* Give monitor a chance to act */ | |
c94709e8 | 182 | ping_monitor(mdi->text_version); |
daf7a3ce NB |
183 | |
184 | fd = open(devname, O_RDONLY); | |
ada6c239 N |
185 | } else if (mdi && |
186 | mdi->array.major_version == -1 && | |
187 | mdi->array.minor_version == -2 && | |
3c558363 | 188 | !is_subarray(mdi->text_version)) { |
ada6c239 N |
189 | /* container, possibly mdmon-managed. |
190 | * Make sure mdmon isn't opening it, which | |
191 | * would interfere with the 'stop' | |
192 | */ | |
193 | ping_monitor(mdi->sys_name); | |
daf7a3ce NB |
194 | } |
195 | if (mdi) | |
196 | sysfs_free(mdi); | |
197 | ||
198 | if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) { | |
37ea3936 | 199 | if (quiet == 0) { |
daf7a3ce | 200 | fprintf(stderr, Name |
4b9d39fc | 201 | ": failed to stop array %s: %s\n", |
91f068bf | 202 | devname, strerror(errno)); |
d927f3c4 NB |
203 | if (errno == EBUSY) |
204 | fprintf(stderr, "Perhaps a running " | |
205 | "process, mounted filesystem " | |
206 | "or active volume group?\n"); | |
207 | } | |
682c7051 NB |
208 | return 1; |
209 | } | |
daf7a3ce | 210 | |
ab56093f NB |
211 | if (quiet <= 0) |
212 | fprintf(stderr, Name ": stopped %s\n", devname); | |
daf7a3ce | 213 | if (fd >= 0 && fstat(fd, &stb) == 0) { |
8382f19b NB |
214 | int devnum; |
215 | if (major(stb.st_rdev) == MD_MAJOR) | |
216 | devnum = minor(stb.st_rdev); | |
217 | else | |
218 | devnum = -1-(minor(stb.st_rdev)>>6); | |
219 | map_delete(&map, devnum); | |
220 | map_write(map); | |
221 | map_free(map); | |
222 | } | |
682c7051 NB |
223 | } |
224 | return 0; | |
64c4757e NB |
225 | } |
226 | ||
dd0781e5 NB |
227 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
228 | { | |
229 | mdu_array_info_t info; | |
230 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
231 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
232 | devname, strerror(errno)); | |
233 | return 1; | |
234 | } | |
235 | if (size >= 0) | |
236 | info.size = size; | |
237 | if (raid_disks > 0) | |
238 | info.raid_disks = raid_disks; | |
239 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
240 | fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n", | |
241 | devname, strerror(errno)); | |
242 | return 1; | |
243 | } | |
244 | return 0; | |
245 | } | |
246 | ||
b5e64645 NB |
247 | int Manage_reconfig(char *devname, int fd, int layout) |
248 | { | |
249 | mdu_array_info_t info; | |
250 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
251 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
252 | devname, strerror(errno)); | |
253 | return 1; | |
254 | } | |
255 | info.layout = layout; | |
256 | printf("layout set to %d\n", info.layout); | |
257 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
258 | fprintf(stderr, Name ": Cannot set layout for %s: %s\n", | |
259 | devname, strerror(errno)); | |
260 | return 1; | |
261 | } | |
262 | return 0; | |
263 | } | |
dd0781e5 | 264 | |
64c4757e | 265 | int Manage_subdevs(char *devname, int fd, |
dab6685f | 266 | mddev_dev_t devlist, int verbose) |
cd29a5c8 | 267 | { |
682c7051 NB |
268 | /* do something to each dev. |
269 | * devmode can be | |
270 | * 'a' - add the device | |
271 | * try HOT_ADD_DISK | |
272 | * If that fails EINVAL, try ADD_NEW_DISK | |
273 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
274 | * device can be 'faulty' or 'detached' in which case all |
275 | * matching devices are removed. | |
682c7051 | 276 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
277 | * device can be 'detached' in which case any device that |
278 | * is inaccessible will be marked faulty. | |
682c7051 NB |
279 | */ |
280 | mdu_array_info_t array; | |
281 | mdu_disk_info_t disc; | |
7a3be72f | 282 | unsigned long long array_size; |
b80da661 | 283 | mddev_dev_t dv, next = NULL; |
682c7051 | 284 | struct stat stb; |
b80da661 | 285 | int j, jnext = 0; |
0fbf459d | 286 | int tfd; |
3da92f27 | 287 | struct supertype *st, *tst; |
fe80f49b NB |
288 | int duuid[4]; |
289 | int ouuid[4]; | |
f94d52f4 | 290 | int lfd = -1; |
682c7051 NB |
291 | |
292 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
293 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
294 | devname); | |
295 | return 1; | |
296 | } | |
3da92f27 | 297 | |
7a3be72f NB |
298 | /* array.size is only 32 bit and may be truncated. |
299 | * So read from sysfs if possible, and record number of sectors | |
300 | */ | |
301 | ||
302 | array_size = get_component_size(fd); | |
303 | if (array_size <= 0) | |
304 | array_size = array.size * 2; | |
305 | ||
1686dc25 | 306 | tst = super_by_fd(fd); |
3da92f27 NB |
307 | if (!tst) { |
308 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
309 | array.major_version, array.minor_version); | |
310 | return 1; | |
311 | } | |
312 | ||
b80da661 | 313 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 314 | unsigned long long ldsize; |
b80da661 NB |
315 | char dvname[20]; |
316 | char *dnprintable = dv->devname; | |
f94d52f4 | 317 | int err; |
4a39c6f2 | 318 | |
b80da661 NB |
319 | next = dv->next; |
320 | jnext = 0; | |
321 | ||
322 | if (strcmp(dv->devname, "failed")==0 || | |
323 | strcmp(dv->devname, "faulty")==0) { | |
324 | if (dv->disposition != 'r') { | |
325 | fprintf(stderr, Name ": %s only meaningful " | |
326 | "with -r, not -%c\n", | |
327 | dv->devname, dv->disposition); | |
328 | return 1; | |
329 | } | |
330 | for (; j < array.raid_disks + array.nr_disks ; j++) { | |
331 | disc.number = j; | |
332 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
333 | continue; | |
334 | if (disc.major == 0 && disc.minor == 0) | |
335 | continue; | |
336 | if ((disc.state & 1) == 0) /* faulty */ | |
337 | continue; | |
338 | stb.st_rdev = makedev(disc.major, disc.minor); | |
339 | next = dv; | |
340 | jnext = j+1; | |
341 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
342 | dnprintable = dvname; | |
343 | break; | |
344 | } | |
345 | if (jnext == 0) | |
346 | continue; | |
347 | } else if (strcmp(dv->devname, "detached") == 0) { | |
348 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
349 | fprintf(stderr, Name ": %s only meaningful " | |
350 | "with -r of -f, not -%c\n", | |
351 | dv->devname, dv->disposition); | |
352 | return 1; | |
353 | } | |
354 | for (; j < array.raid_disks + array.nr_disks; j++) { | |
355 | int sfd; | |
356 | disc.number = j; | |
357 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
358 | continue; | |
359 | if (disc.major == 0 && disc.minor == 0) | |
360 | continue; | |
361 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
362 | sfd = dev_open(dvname, O_RDONLY); | |
363 | if (sfd >= 0) { | |
364 | close(sfd); | |
365 | continue; | |
366 | } | |
367 | if (dv->disposition == 'f' && | |
368 | (disc.state & 1) == 1) /* already faulty */ | |
369 | continue; | |
370 | if (errno != ENXIO) | |
371 | continue; | |
372 | stb.st_rdev = makedev(disc.major, disc.minor); | |
373 | next = dv; | |
374 | jnext = j+1; | |
375 | dnprintable = dvname; | |
376 | break; | |
377 | } | |
378 | if (jnext == 0) | |
379 | continue; | |
380 | } else { | |
381 | j = 0; | |
382 | ||
383 | if (stat(dv->devname, &stb)) { | |
384 | fprintf(stderr, Name ": cannot find %s: %s\n", | |
385 | dv->devname, strerror(errno)); | |
386 | return 1; | |
387 | } | |
388 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
389 | fprintf(stderr, Name ": %s is not a " | |
390 | "block device.\n", | |
391 | dv->devname); | |
392 | return 1; | |
393 | } | |
682c7051 | 394 | } |
cd29a5c8 | 395 | switch(dv->disposition){ |
682c7051 | 396 | default: |
c913b90e NB |
397 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
398 | dv->devname, dv->disposition); | |
682c7051 NB |
399 | return 1; |
400 | case 'a': | |
4a39c6f2 | 401 | /* add the device */ |
f7e7067b | 402 | if (tst->subarray[0]) { |
f7dd881f DW |
403 | fprintf(stderr, Name ": Cannot add disks to a" |
404 | " \'member\' array, perform this" | |
405 | " operation on the parent container\n"); | |
406 | return 1; | |
f94d52f4 | 407 | } |
f277ce36 | 408 | /* Make sure it isn't in use (in 2.6 or later) */ |
6416d527 | 409 | tfd = open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT); |
0fbf459d | 410 | if (tfd < 0) { |
d7eaf49f NB |
411 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
412 | dv->devname, strerror(errno)); | |
413 | return 1; | |
414 | } | |
25037aa8 | 415 | remove_partitions(tfd); |
3da92f27 | 416 | |
1686dc25 | 417 | st = dup_super(tst); |
3da92f27 | 418 | |
fe80f49b | 419 | if (array.not_persistent==0) |
3da92f27 NB |
420 | st->ss->load_super(st, tfd, NULL); |
421 | ||
beae1dfe | 422 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { |
4a39c6f2 NB |
423 | close(tfd); |
424 | return 1; | |
4a39c6f2 | 425 | } |
0fbf459d | 426 | close(tfd); |
fe80f49b | 427 | |
f94d52f4 NB |
428 | |
429 | if (!tst->ss->external && | |
430 | array.major_version == 0 && | |
60d9a174 | 431 | md_get_version(fd)%100 < 2) { |
892debc8 NB |
432 | if (ioctl(fd, HOT_ADD_DISK, |
433 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
434 | if (verbose >= 0) |
435 | fprintf(stderr, Name ": hot added %s\n", | |
436 | dv->devname); | |
892debc8 NB |
437 | continue; |
438 | } | |
439 | ||
cd29a5c8 | 440 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
892debc8 | 441 | dv->devname, strerror(errno)); |
cd29a5c8 NB |
442 | return 1; |
443 | } | |
892debc8 | 444 | |
43dad3d6 | 445 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 446 | /* Make sure device is large enough */ |
3da92f27 | 447 | if (tst->ss->avail_size(tst, ldsize/512) < |
7a3be72f | 448 | array_size) { |
4a39c6f2 NB |
449 | fprintf(stderr, Name ": %s not large enough to join array\n", |
450 | dv->devname); | |
451 | return 1; | |
452 | } | |
453 | ||
fe80f49b | 454 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
455 | * a spare slot to use. |
456 | * For 'external' array (well, container based), | |
457 | * We can just load the metadata for the array. | |
fe80f49b | 458 | */ |
43dad3d6 DW |
459 | if (tst->ss->external) { |
460 | tst->ss->load_super(tst, fd, NULL); | |
461 | } else for (j = 0; j < tst->max_devs; j++) { | |
fe80f49b NB |
462 | char *dev; |
463 | int dfd; | |
464 | disc.number = j; | |
465 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
466 | continue; | |
467 | if (disc.major==0 && disc.minor==0) | |
468 | continue; | |
469 | if ((disc.state & 4)==0) continue; /* sync */ | |
470 | /* Looks like a good device to try */ | |
16c6fa80 | 471 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 472 | if (!dev) continue; |
16c6fa80 | 473 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 474 | if (dfd < 0) continue; |
3da92f27 NB |
475 | if (tst->ss->load_super(tst, dfd, |
476 | NULL)) { | |
fe80f49b NB |
477 | close(dfd); |
478 | continue; | |
479 | } | |
892debc8 | 480 | close(dfd); |
fe80f49b NB |
481 | break; |
482 | } | |
43dad3d6 | 483 | /* FIXME this is a bad test to be using */ |
3da92f27 | 484 | if (!tst->sb) { |
fe80f49b NB |
485 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); |
486 | return 1; | |
487 | } | |
488 | /* Possibly this device was recently part of the array | |
489 | * and was temporarily removed, and is now being re-added. | |
490 | * If so, we can simply re-add it. | |
491 | */ | |
3da92f27 | 492 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 NB |
493 | |
494 | /* re-add doesn't work for version-1 superblocks | |
495 | * before 2.6.18 :-( | |
496 | */ | |
497 | if (array.major_version == 1 && | |
498 | get_linux_version() <= 2006018) | |
499 | ; | |
3da92f27 NB |
500 | else if (st->sb) { |
501 | st->ss->uuid_from_super(st, ouuid); | |
fe80f49b | 502 | if (memcmp(duuid, ouuid, sizeof(ouuid))==0) { |
4d20d744 NB |
503 | /* looks close enough for now. Kernel |
504 | * will worry about whether a bitmap | |
505 | * based reconstruction is possible. | |
fe80f49b NB |
506 | */ |
507 | struct mdinfo mdi; | |
3da92f27 | 508 | st->ss->getinfo_super(st, &mdi); |
fe80f49b NB |
509 | disc.major = major(stb.st_rdev); |
510 | disc.minor = minor(stb.st_rdev); | |
511 | disc.number = mdi.disk.number; | |
512 | disc.raid_disk = mdi.disk.raid_disk; | |
513 | disc.state = mdi.disk.state; | |
4d20d744 NB |
514 | if (dv->writemostly) |
515 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; | |
fe80f49b NB |
516 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
517 | if (verbose >= 0) | |
518 | fprintf(stderr, Name ": re-added %s\n", dv->devname); | |
308e1801 | 519 | continue; |
fe80f49b NB |
520 | } |
521 | /* fall back on normal-add */ | |
522 | } | |
892debc8 | 523 | } |
4a39c6f2 NB |
524 | } else { |
525 | /* non-persistent. Must ensure that new drive | |
526 | * is at least array.size big. | |
527 | */ | |
7a3be72f | 528 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
529 | fprintf(stderr, Name ": %s not large enough to join array\n", |
530 | dv->devname); | |
531 | return 1; | |
532 | } | |
892debc8 | 533 | } |
7eae7080 NB |
534 | /* in 2.6.17 and earlier, version-1 superblocks won't |
535 | * use the number we write, but will choose a free number. | |
536 | * we must choose the same free number, which requires | |
537 | * starting at 'raid_disks' and counting up | |
538 | */ | |
3da92f27 | 539 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 540 | disc.number = j; |
682c7051 NB |
541 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
542 | break; | |
543 | if (disc.major==0 && disc.minor==0) | |
544 | break; | |
545 | if (disc.state & 8) /* removed */ | |
546 | break; | |
547 | } | |
0df46c2a NB |
548 | disc.major = major(stb.st_rdev); |
549 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
550 | disc.number =j; |
551 | disc.state = 0; | |
43dad3d6 | 552 | if (array.not_persistent==0 || tst->ss->external) { |
111d01fc | 553 | int dfd; |
fe80f49b NB |
554 | if (dv->writemostly) |
555 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; | |
6416d527 | 556 | dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
111d01fc NB |
557 | tst->ss->add_to_super(tst, &disc, dfd, |
558 | dv->devname); | |
559 | /* write_init_super will close 'dfd' */ | |
43dad3d6 DW |
560 | if (tst->ss->external) |
561 | /* mdmon will write the metadata */ | |
562 | close(dfd); | |
563 | else if (tst->ss->write_init_super(tst)) | |
fe80f49b NB |
564 | return 1; |
565 | } else if (dv->re_add) { | |
566 | /* this had better be raid1. | |
567 | * As we are "--re-add"ing we must find a spare slot | |
568 | * to fill. | |
569 | */ | |
570 | char *used = malloc(array.raid_disks); | |
571 | memset(used, 0, array.raid_disks); | |
3da92f27 | 572 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
573 | mdu_disk_info_t disc2; |
574 | disc2.number = j; | |
575 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
576 | continue; | |
577 | if (disc2.major==0 && disc2.minor==0) | |
578 | continue; | |
579 | if (disc2.state & 8) /* removed */ | |
580 | continue; | |
581 | if (disc2.raid_disk < 0) | |
582 | continue; | |
583 | if (disc2.raid_disk > array.raid_disks) | |
584 | continue; | |
585 | used[disc2.raid_disk] = 1; | |
586 | } | |
587 | for (j=0 ; j<array.raid_disks; j++) | |
588 | if (!used[j]) { | |
589 | disc.raid_disk = j; | |
590 | disc.state |= (1<<MD_DISK_SYNC); | |
591 | break; | |
592 | } | |
593 | } | |
d8def61c NB |
594 | if (dv->writemostly) |
595 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); | |
43dad3d6 DW |
596 | if (tst->ss->external) { |
597 | /* add a disk to an external metadata container | |
598 | * only if mdmon is around to see it | |
599 | */ | |
600 | struct mdinfo new_mdi; | |
601 | struct mdinfo *sra; | |
602 | int container_fd; | |
603 | int devnum = fd2devnum(fd); | |
604 | ||
605 | container_fd = open_dev_excl(devnum); | |
606 | if (container_fd < 0) { | |
607 | fprintf(stderr, Name ": add failed for %s:" | |
608 | " could not get exclusive access to container\n", | |
609 | dv->devname); | |
610 | return 1; | |
611 | } | |
612 | ||
613 | if (!mdmon_running(devnum)) { | |
614 | fprintf(stderr, Name ": add failed for %s: mdmon not running\n", | |
615 | dv->devname); | |
616 | close(container_fd); | |
617 | return 1; | |
618 | } | |
619 | ||
620 | sra = sysfs_read(container_fd, -1, 0); | |
621 | if (!sra) { | |
622 | fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", | |
623 | dv->devname); | |
624 | close(container_fd); | |
625 | return 1; | |
626 | } | |
627 | sra->array.level = LEVEL_CONTAINER; | |
628 | /* Need to set data_offset and component_size */ | |
629 | tst->ss->getinfo_super(tst, &new_mdi); | |
630 | new_mdi.disk.major = disc.major; | |
631 | new_mdi.disk.minor = disc.minor; | |
632 | if (sysfs_add_disk(sra, &new_mdi) != 0) { | |
633 | fprintf(stderr, Name ": add new device to external metadata" | |
634 | " failed for %s\n", dv->devname); | |
635 | close(container_fd); | |
636 | return 1; | |
637 | } | |
638 | ping_monitor(devnum2devname(devnum)); | |
639 | sysfs_free(sra); | |
640 | close(container_fd); | |
641 | } else if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
f277ce36 NB |
642 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", |
643 | dv->devname, j, strerror(errno)); | |
682c7051 NB |
644 | return 1; |
645 | } | |
dab6685f NB |
646 | if (verbose >= 0) |
647 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
648 | break; |
649 | ||
650 | case 'r': | |
651 | /* hot remove */ | |
f7e7067b | 652 | if (tst->subarray[0]) { |
f7dd881f DW |
653 | fprintf(stderr, Name ": Cannot remove disks from a" |
654 | " \'member\' array, perform this" | |
655 | " operation on the parent container\n"); | |
656 | return 1; | |
f94d52f4 NB |
657 | } |
658 | if (tst->ss->external) { | |
659 | /* To remove a device from a container, we must | |
660 | * check that it isn't in use in an array. | |
661 | * This involves looking in the 'holders' | |
662 | * directory - there must be just one entry, | |
663 | * the container. | |
664 | * To ensure that it doesn't get used as a | |
665 | * hold spare while we are checking, we | |
666 | * get an O_EXCL open on the container | |
667 | */ | |
668 | int dnum = fd2devnum(fd); | |
669 | lfd = open_dev_excl(dnum); | |
670 | if (lfd < 0) { | |
671 | fprintf(stderr, Name | |
672 | ": Cannot get exclusive access " | |
673 | " to container - odd\n"); | |
674 | return 1; | |
675 | } | |
676 | if (!sysfs_unique_holder(dnum, stb.st_rdev)) { | |
677 | fprintf(stderr, Name | |
678 | ": %s is %s, cannot remove.\n", | |
679 | dnprintable, | |
680 | errno == EEXIST ? "still in use": | |
681 | "not a member"); | |
682 | close(lfd); | |
683 | return 1; | |
684 | } | |
685 | } | |
82b27616 | 686 | /* FIXME check that it is a current member */ |
f94d52f4 NB |
687 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); |
688 | if (err && errno == ENODEV) { | |
689 | /* Old kernels rejected this if no personality | |
690 | * registered */ | |
691 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
692 | struct mdinfo *dv = NULL; | |
693 | if (sra) | |
694 | dv = sra->devs; | |
695 | for ( ; dv ; dv=dv->next) | |
696 | if (dv->disk.major == major(stb.st_rdev) && | |
697 | dv->disk.minor == minor(stb.st_rdev)) | |
698 | break; | |
699 | if (dv) | |
700 | err = sysfs_set_str(sra, dv, | |
701 | "state", "remove"); | |
702 | else | |
703 | err = -1; | |
704 | if (sra) | |
705 | sysfs_free(sra); | |
706 | } | |
707 | if (err) { | |
b80da661 NB |
708 | fprintf(stderr, Name ": hot remove failed " |
709 | "for %s: %s\n", dnprintable, | |
710 | strerror(errno)); | |
f94d52f4 NB |
711 | if (lfd >= 0) |
712 | close(lfd); | |
682c7051 NB |
713 | return 1; |
714 | } | |
313a4a82 DW |
715 | if (tst->ss->external) { |
716 | /* | |
717 | * Before dropping our exclusive open we make an | |
718 | * attempt at preventing mdmon from seeing an | |
719 | * 'add' event before reconciling this 'remove' | |
720 | * event. | |
721 | */ | |
722 | char *name = devnum2devname(fd2devnum(fd)); | |
723 | ||
724 | if (!name) { | |
725 | fprintf(stderr, Name ": unable to get container name\n"); | |
726 | return 1; | |
727 | } | |
728 | ||
729 | ping_manager(name); | |
730 | free(name); | |
731 | } | |
f94d52f4 | 732 | close(lfd); |
dab6685f | 733 | if (verbose >= 0) |
b80da661 NB |
734 | fprintf(stderr, Name ": hot removed %s\n", |
735 | dnprintable); | |
682c7051 NB |
736 | break; |
737 | ||
738 | case 'f': /* set faulty */ | |
739 | /* FIXME check current member */ | |
cd29a5c8 | 740 | if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) { |
b83d95f3 | 741 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 742 | dnprintable, strerror(errno)); |
682c7051 NB |
743 | return 1; |
744 | } | |
dab6685f NB |
745 | if (verbose >= 0) |
746 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 747 | dnprintable, devname); |
682c7051 NB |
748 | break; |
749 | } | |
750 | } | |
751 | return 0; | |
aba69144 | 752 | |
64c4757e | 753 | } |
1f48664b NB |
754 | |
755 | int autodetect(void) | |
756 | { | |
757 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
758 | int rv = 1; | |
759 | int fd = dev_open("9:0", O_RDONLY); | |
760 | if (fd >= 0) { | |
761 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
762 | rv = 0; | |
763 | close(fd); | |
764 | } | |
765 | return rv; | |
766 | } | |
435d4ebb | 767 | #endif |