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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; | |
0e600426 | 48 | #ifndef MDASSEMBLE |
e9dd1598 | 49 | struct mdinfo *mdi; |
0e600426 | 50 | #endif |
aba69144 | 51 | |
682c7051 NB |
52 | if (md_get_version(fd) < 9000) { |
53 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
54 | return 1; | |
55 | } | |
0e600426 | 56 | #ifndef MDASSEMBLE |
e9dd1598 N |
57 | /* If this is an externally-manage array, we need to modify the |
58 | * metadata_version so that mdmon doesn't undo our change. | |
59 | */ | |
60 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); | |
61 | if (mdi && | |
62 | mdi->array.major_version == -1 && | |
63 | mdi->array.level > 0 && | |
64 | is_subarray(mdi->text_version)) { | |
65 | char vers[64]; | |
66 | strcpy(vers, "external:"); | |
67 | strcat(vers, mdi->text_version); | |
68 | if (readonly > 0) { | |
69 | int rv; | |
70 | /* We set readonly ourselves. */ | |
71 | vers[9] = '-'; | |
72 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
73 | ||
74 | close(fd); | |
75 | rv = sysfs_set_str(mdi, NULL, "array_state", "readonly"); | |
76 | ||
77 | if (rv < 0) { | |
78 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
79 | devname, strerror(errno)); | |
80 | ||
81 | vers[9] = mdi->text_version[0]; | |
82 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
83 | return 1; | |
84 | } | |
85 | } else { | |
86 | char *cp; | |
87 | /* We cannot set read/write - must signal mdmon */ | |
88 | vers[9] = '/'; | |
89 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
90 | ||
91 | cp = strchr(vers+10, '/'); | |
92 | if (*cp) | |
93 | *cp = 0; | |
94 | ping_monitor(vers+10); | |
95 | } | |
96 | return 0; | |
97 | } | |
0e600426 | 98 | #endif |
682c7051 NB |
99 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
100 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
101 | devname); | |
102 | return 1; | |
103 | } | |
aba69144 | 104 | |
682c7051 NB |
105 | if (readonly>0) { |
106 | if (ioctl(fd, STOP_ARRAY_RO, NULL)) { | |
107 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
108 | devname, strerror(errno)); | |
109 | return 1; | |
110 | } | |
111 | } else if (readonly < 0) { | |
112 | if (ioctl(fd, RESTART_ARRAY_RW, NULL)) { | |
82b27616 | 113 | fprintf(stderr, Name ": failed to set writable for %s: %s\n", |
682c7051 NB |
114 | devname, strerror(errno)); |
115 | return 1; | |
116 | } | |
117 | } | |
aba69144 | 118 | return 0; |
64c4757e NB |
119 | } |
120 | ||
435d4ebb LB |
121 | #ifndef MDASSEMBLE |
122 | ||
91f068bf | 123 | int Manage_runstop(char *devname, int fd, int runstop, int quiet) |
64c4757e | 124 | { |
682c7051 NB |
125 | /* Run or stop the array. array must already be configured |
126 | * required >= 0.90.0 | |
4b9d39fc N |
127 | * Only print failure messages if quiet == 0; |
128 | * quiet > 0 means really be quiet | |
129 | * quiet < 0 means we will try again if it fails. | |
682c7051 | 130 | */ |
682c7051 | 131 | mdu_param_t param; /* unused */ |
82b27616 NB |
132 | |
133 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
134 | if (ioctl(fd, STOP_MD, 0)) { | |
4b9d39fc N |
135 | if (quiet == 0) fprintf(stderr, |
136 | Name ": stopping device %s " | |
137 | "failed: %s\n", | |
138 | devname, strerror(errno)); | |
82b27616 NB |
139 | return 1; |
140 | } | |
141 | } | |
aba69144 | 142 | |
682c7051 NB |
143 | if (md_get_version(fd) < 9000) { |
144 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
145 | return 1; | |
146 | } | |
82b27616 | 147 | /* |
682c7051 NB |
148 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
149 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
150 | devname); | |
151 | return 1; | |
152 | } | |
82b27616 | 153 | */ |
682c7051 NB |
154 | if (runstop>0) { |
155 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
156 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
157 | devname, strerror(errno)); | |
158 | return 1; | |
159 | } | |
8382f19b NB |
160 | if (quiet <= 0) |
161 | fprintf(stderr, Name ": started %s\n", devname); | |
682c7051 | 162 | } else if (runstop < 0){ |
8382f19b NB |
163 | struct map_ent *map = NULL; |
164 | struct stat stb; | |
daf7a3ce NB |
165 | struct mdinfo *mdi; |
166 | /* If this is an mdmon managed array, just write 'inactive' | |
167 | * to the array state and let mdmon clear up. | |
168 | */ | |
169 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); | |
170 | if (mdi && | |
171 | mdi->array.level > 0 && | |
3c558363 | 172 | is_subarray(mdi->text_version)) { |
daf7a3ce NB |
173 | /* This is mdmon managed. */ |
174 | close(fd); | |
175 | if (sysfs_set_str(mdi, NULL, | |
176 | "array_state", "inactive") < 0) { | |
4b9d39fc | 177 | if (quiet == 0) |
daf7a3ce | 178 | fprintf(stderr, Name |
4b9d39fc | 179 | ": failed to stop array %s: %s\n", |
daf7a3ce NB |
180 | devname, strerror(errno)); |
181 | return 1; | |
182 | } | |
183 | ||
184 | /* Give monitor a chance to act */ | |
c94709e8 | 185 | ping_monitor(mdi->text_version); |
daf7a3ce NB |
186 | |
187 | fd = open(devname, O_RDONLY); | |
ada6c239 N |
188 | } else if (mdi && |
189 | mdi->array.major_version == -1 && | |
190 | mdi->array.minor_version == -2 && | |
3c558363 | 191 | !is_subarray(mdi->text_version)) { |
ada6c239 N |
192 | /* container, possibly mdmon-managed. |
193 | * Make sure mdmon isn't opening it, which | |
194 | * would interfere with the 'stop' | |
195 | */ | |
196 | ping_monitor(mdi->sys_name); | |
daf7a3ce | 197 | } |
daf7a3ce NB |
198 | |
199 | if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) { | |
37ea3936 | 200 | if (quiet == 0) { |
daf7a3ce | 201 | fprintf(stderr, Name |
4b9d39fc | 202 | ": failed to stop array %s: %s\n", |
91f068bf | 203 | devname, strerror(errno)); |
d927f3c4 NB |
204 | if (errno == EBUSY) |
205 | fprintf(stderr, "Perhaps a running " | |
206 | "process, mounted filesystem " | |
207 | "or active volume group?\n"); | |
208 | } | |
97590376 N |
209 | if (mdi) |
210 | sysfs_free(mdi); | |
682c7051 NB |
211 | return 1; |
212 | } | |
97590376 N |
213 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array |
214 | * was stopped, so We'll do it here just to be sure. | |
215 | */ | |
216 | if (mdi) | |
217 | sysfs_uevent(mdi, "change"); | |
daf7a3ce | 218 | |
ab56093f NB |
219 | if (quiet <= 0) |
220 | fprintf(stderr, Name ": stopped %s\n", devname); | |
daf7a3ce | 221 | if (fd >= 0 && fstat(fd, &stb) == 0) { |
8382f19b NB |
222 | int devnum; |
223 | if (major(stb.st_rdev) == MD_MAJOR) | |
224 | devnum = minor(stb.st_rdev); | |
225 | else | |
226 | devnum = -1-(minor(stb.st_rdev)>>6); | |
227 | map_delete(&map, devnum); | |
228 | map_write(map); | |
229 | map_free(map); | |
230 | } | |
682c7051 NB |
231 | } |
232 | return 0; | |
64c4757e NB |
233 | } |
234 | ||
dd0781e5 NB |
235 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
236 | { | |
237 | mdu_array_info_t info; | |
238 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
239 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
240 | devname, strerror(errno)); | |
241 | return 1; | |
242 | } | |
243 | if (size >= 0) | |
244 | info.size = size; | |
245 | if (raid_disks > 0) | |
246 | info.raid_disks = raid_disks; | |
247 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
248 | fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n", | |
249 | devname, strerror(errno)); | |
250 | return 1; | |
251 | } | |
252 | return 0; | |
253 | } | |
254 | ||
b5e64645 NB |
255 | int Manage_reconfig(char *devname, int fd, int layout) |
256 | { | |
257 | mdu_array_info_t info; | |
258 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
259 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
260 | devname, strerror(errno)); | |
261 | return 1; | |
262 | } | |
263 | info.layout = layout; | |
264 | printf("layout set to %d\n", info.layout); | |
265 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
266 | fprintf(stderr, Name ": Cannot set layout for %s: %s\n", | |
267 | devname, strerror(errno)); | |
268 | return 1; | |
269 | } | |
270 | return 0; | |
271 | } | |
dd0781e5 | 272 | |
64c4757e | 273 | int Manage_subdevs(char *devname, int fd, |
dab6685f | 274 | mddev_dev_t devlist, int verbose) |
cd29a5c8 | 275 | { |
682c7051 NB |
276 | /* do something to each dev. |
277 | * devmode can be | |
278 | * 'a' - add the device | |
279 | * try HOT_ADD_DISK | |
280 | * If that fails EINVAL, try ADD_NEW_DISK | |
281 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
282 | * device can be 'faulty' or 'detached' in which case all |
283 | * matching devices are removed. | |
682c7051 | 284 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
285 | * device can be 'detached' in which case any device that |
286 | * is inaccessible will be marked faulty. | |
682c7051 NB |
287 | */ |
288 | mdu_array_info_t array; | |
289 | mdu_disk_info_t disc; | |
7a3be72f | 290 | unsigned long long array_size; |
b80da661 | 291 | mddev_dev_t dv, next = NULL; |
682c7051 | 292 | struct stat stb; |
b80da661 | 293 | int j, jnext = 0; |
0fbf459d | 294 | int tfd; |
3da92f27 | 295 | struct supertype *st, *tst; |
fe80f49b NB |
296 | int duuid[4]; |
297 | int ouuid[4]; | |
f94d52f4 | 298 | int lfd = -1; |
682c7051 NB |
299 | |
300 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
301 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
302 | devname); | |
303 | return 1; | |
304 | } | |
3da92f27 | 305 | |
7a3be72f NB |
306 | /* array.size is only 32 bit and may be truncated. |
307 | * So read from sysfs if possible, and record number of sectors | |
308 | */ | |
309 | ||
310 | array_size = get_component_size(fd); | |
311 | if (array_size <= 0) | |
312 | array_size = array.size * 2; | |
313 | ||
1686dc25 | 314 | tst = super_by_fd(fd); |
3da92f27 NB |
315 | if (!tst) { |
316 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
317 | array.major_version, array.minor_version); | |
318 | return 1; | |
319 | } | |
320 | ||
b80da661 | 321 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 322 | unsigned long long ldsize; |
b80da661 NB |
323 | char dvname[20]; |
324 | char *dnprintable = dv->devname; | |
f94d52f4 | 325 | int err; |
4a39c6f2 | 326 | |
b80da661 NB |
327 | next = dv->next; |
328 | jnext = 0; | |
329 | ||
330 | if (strcmp(dv->devname, "failed")==0 || | |
331 | strcmp(dv->devname, "faulty")==0) { | |
332 | if (dv->disposition != 'r') { | |
333 | fprintf(stderr, Name ": %s only meaningful " | |
334 | "with -r, not -%c\n", | |
335 | dv->devname, dv->disposition); | |
336 | return 1; | |
337 | } | |
338 | for (; j < array.raid_disks + array.nr_disks ; j++) { | |
339 | disc.number = j; | |
340 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
341 | continue; | |
342 | if (disc.major == 0 && disc.minor == 0) | |
343 | continue; | |
344 | if ((disc.state & 1) == 0) /* faulty */ | |
345 | continue; | |
346 | stb.st_rdev = makedev(disc.major, disc.minor); | |
347 | next = dv; | |
348 | jnext = j+1; | |
349 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
350 | dnprintable = dvname; | |
351 | break; | |
352 | } | |
353 | if (jnext == 0) | |
354 | continue; | |
355 | } else if (strcmp(dv->devname, "detached") == 0) { | |
356 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
357 | fprintf(stderr, Name ": %s only meaningful " | |
358 | "with -r of -f, not -%c\n", | |
359 | dv->devname, dv->disposition); | |
360 | return 1; | |
361 | } | |
362 | for (; j < array.raid_disks + array.nr_disks; j++) { | |
363 | int sfd; | |
364 | disc.number = j; | |
365 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
366 | continue; | |
367 | if (disc.major == 0 && disc.minor == 0) | |
368 | continue; | |
369 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
370 | sfd = dev_open(dvname, O_RDONLY); | |
371 | if (sfd >= 0) { | |
372 | close(sfd); | |
373 | continue; | |
374 | } | |
375 | if (dv->disposition == 'f' && | |
376 | (disc.state & 1) == 1) /* already faulty */ | |
377 | continue; | |
378 | if (errno != ENXIO) | |
379 | continue; | |
380 | stb.st_rdev = makedev(disc.major, disc.minor); | |
381 | next = dv; | |
382 | jnext = j+1; | |
383 | dnprintable = dvname; | |
384 | break; | |
385 | } | |
386 | if (jnext == 0) | |
387 | continue; | |
388 | } else { | |
389 | j = 0; | |
390 | ||
391 | if (stat(dv->devname, &stb)) { | |
392 | fprintf(stderr, Name ": cannot find %s: %s\n", | |
393 | dv->devname, strerror(errno)); | |
394 | return 1; | |
395 | } | |
396 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
397 | fprintf(stderr, Name ": %s is not a " | |
398 | "block device.\n", | |
399 | dv->devname); | |
400 | return 1; | |
401 | } | |
682c7051 | 402 | } |
cd29a5c8 | 403 | switch(dv->disposition){ |
682c7051 | 404 | default: |
c913b90e NB |
405 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
406 | dv->devname, dv->disposition); | |
682c7051 NB |
407 | return 1; |
408 | case 'a': | |
4a39c6f2 | 409 | /* add the device */ |
f7e7067b | 410 | if (tst->subarray[0]) { |
f7dd881f DW |
411 | fprintf(stderr, Name ": Cannot add disks to a" |
412 | " \'member\' array, perform this" | |
413 | " operation on the parent container\n"); | |
414 | return 1; | |
f94d52f4 | 415 | } |
f277ce36 | 416 | /* Make sure it isn't in use (in 2.6 or later) */ |
6416d527 | 417 | tfd = open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT); |
0fbf459d | 418 | if (tfd < 0) { |
d7eaf49f NB |
419 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
420 | dv->devname, strerror(errno)); | |
421 | return 1; | |
422 | } | |
25037aa8 | 423 | remove_partitions(tfd); |
3da92f27 | 424 | |
1686dc25 | 425 | st = dup_super(tst); |
3da92f27 | 426 | |
fe80f49b | 427 | if (array.not_persistent==0) |
3da92f27 NB |
428 | st->ss->load_super(st, tfd, NULL); |
429 | ||
beae1dfe | 430 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { |
4a39c6f2 NB |
431 | close(tfd); |
432 | return 1; | |
4a39c6f2 | 433 | } |
0fbf459d | 434 | close(tfd); |
fe80f49b | 435 | |
f94d52f4 NB |
436 | |
437 | if (!tst->ss->external && | |
438 | array.major_version == 0 && | |
60d9a174 | 439 | md_get_version(fd)%100 < 2) { |
892debc8 NB |
440 | if (ioctl(fd, HOT_ADD_DISK, |
441 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
442 | if (verbose >= 0) |
443 | fprintf(stderr, Name ": hot added %s\n", | |
444 | dv->devname); | |
892debc8 NB |
445 | continue; |
446 | } | |
447 | ||
cd29a5c8 | 448 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
892debc8 | 449 | dv->devname, strerror(errno)); |
cd29a5c8 NB |
450 | return 1; |
451 | } | |
892debc8 | 452 | |
43dad3d6 | 453 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 454 | |
fe80f49b | 455 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
456 | * a spare slot to use. |
457 | * For 'external' array (well, container based), | |
458 | * We can just load the metadata for the array. | |
fe80f49b | 459 | */ |
43dad3d6 DW |
460 | if (tst->ss->external) { |
461 | tst->ss->load_super(tst, fd, NULL); | |
462 | } else for (j = 0; j < tst->max_devs; j++) { | |
fe80f49b NB |
463 | char *dev; |
464 | int dfd; | |
465 | disc.number = j; | |
466 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
467 | continue; | |
468 | if (disc.major==0 && disc.minor==0) | |
469 | continue; | |
470 | if ((disc.state & 4)==0) continue; /* sync */ | |
471 | /* Looks like a good device to try */ | |
16c6fa80 | 472 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 473 | if (!dev) continue; |
16c6fa80 | 474 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 475 | if (dfd < 0) continue; |
3da92f27 NB |
476 | if (tst->ss->load_super(tst, dfd, |
477 | NULL)) { | |
fe80f49b NB |
478 | close(dfd); |
479 | continue; | |
480 | } | |
892debc8 | 481 | close(dfd); |
fe80f49b NB |
482 | break; |
483 | } | |
43dad3d6 | 484 | /* FIXME this is a bad test to be using */ |
3da92f27 | 485 | if (!tst->sb) { |
fe80f49b NB |
486 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); |
487 | return 1; | |
488 | } | |
2a528478 N |
489 | |
490 | /* Make sure device is large enough */ | |
491 | if (tst->ss->avail_size(tst, ldsize/512) < | |
492 | array_size) { | |
493 | fprintf(stderr, Name ": %s not large enough to join array\n", | |
494 | dv->devname); | |
495 | return 1; | |
496 | } | |
497 | ||
fe80f49b NB |
498 | /* Possibly this device was recently part of the array |
499 | * and was temporarily removed, and is now being re-added. | |
500 | * If so, we can simply re-add it. | |
501 | */ | |
3da92f27 | 502 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 NB |
503 | |
504 | /* re-add doesn't work for version-1 superblocks | |
505 | * before 2.6.18 :-( | |
506 | */ | |
507 | if (array.major_version == 1 && | |
508 | get_linux_version() <= 2006018) | |
509 | ; | |
3da92f27 NB |
510 | else if (st->sb) { |
511 | st->ss->uuid_from_super(st, ouuid); | |
fe80f49b | 512 | if (memcmp(duuid, ouuid, sizeof(ouuid))==0) { |
4d20d744 NB |
513 | /* looks close enough for now. Kernel |
514 | * will worry about whether a bitmap | |
515 | * based reconstruction is possible. | |
fe80f49b NB |
516 | */ |
517 | struct mdinfo mdi; | |
3da92f27 | 518 | st->ss->getinfo_super(st, &mdi); |
fe80f49b NB |
519 | disc.major = major(stb.st_rdev); |
520 | disc.minor = minor(stb.st_rdev); | |
521 | disc.number = mdi.disk.number; | |
522 | disc.raid_disk = mdi.disk.raid_disk; | |
523 | disc.state = mdi.disk.state; | |
b3d31955 | 524 | if (dv->writemostly == 1) |
4d20d744 | 525 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
526 | if (dv->writemostly == 2) |
527 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
fe80f49b NB |
528 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
529 | if (verbose >= 0) | |
530 | fprintf(stderr, Name ": re-added %s\n", dv->devname); | |
308e1801 | 531 | continue; |
fe80f49b NB |
532 | } |
533 | /* fall back on normal-add */ | |
534 | } | |
892debc8 | 535 | } |
4a39c6f2 NB |
536 | } else { |
537 | /* non-persistent. Must ensure that new drive | |
538 | * is at least array.size big. | |
539 | */ | |
7a3be72f | 540 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
541 | fprintf(stderr, Name ": %s not large enough to join array\n", |
542 | dv->devname); | |
543 | return 1; | |
544 | } | |
892debc8 | 545 | } |
7eae7080 NB |
546 | /* in 2.6.17 and earlier, version-1 superblocks won't |
547 | * use the number we write, but will choose a free number. | |
548 | * we must choose the same free number, which requires | |
549 | * starting at 'raid_disks' and counting up | |
550 | */ | |
3da92f27 | 551 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 552 | disc.number = j; |
682c7051 NB |
553 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
554 | break; | |
555 | if (disc.major==0 && disc.minor==0) | |
556 | break; | |
557 | if (disc.state & 8) /* removed */ | |
558 | break; | |
559 | } | |
0df46c2a NB |
560 | disc.major = major(stb.st_rdev); |
561 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
562 | disc.number =j; |
563 | disc.state = 0; | |
43dad3d6 | 564 | if (array.not_persistent==0 || tst->ss->external) { |
111d01fc | 565 | int dfd; |
b3d31955 | 566 | if (dv->writemostly == 1) |
fe80f49b | 567 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
6416d527 | 568 | dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
111d01fc NB |
569 | tst->ss->add_to_super(tst, &disc, dfd, |
570 | dv->devname); | |
571 | /* write_init_super will close 'dfd' */ | |
43dad3d6 DW |
572 | if (tst->ss->external) |
573 | /* mdmon will write the metadata */ | |
574 | close(dfd); | |
575 | else if (tst->ss->write_init_super(tst)) | |
fe80f49b NB |
576 | return 1; |
577 | } else if (dv->re_add) { | |
578 | /* this had better be raid1. | |
579 | * As we are "--re-add"ing we must find a spare slot | |
580 | * to fill. | |
581 | */ | |
582 | char *used = malloc(array.raid_disks); | |
583 | memset(used, 0, array.raid_disks); | |
3da92f27 | 584 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
585 | mdu_disk_info_t disc2; |
586 | disc2.number = j; | |
587 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
588 | continue; | |
589 | if (disc2.major==0 && disc2.minor==0) | |
590 | continue; | |
591 | if (disc2.state & 8) /* removed */ | |
592 | continue; | |
593 | if (disc2.raid_disk < 0) | |
594 | continue; | |
595 | if (disc2.raid_disk > array.raid_disks) | |
596 | continue; | |
597 | used[disc2.raid_disk] = 1; | |
598 | } | |
599 | for (j=0 ; j<array.raid_disks; j++) | |
600 | if (!used[j]) { | |
601 | disc.raid_disk = j; | |
602 | disc.state |= (1<<MD_DISK_SYNC); | |
603 | break; | |
604 | } | |
605 | } | |
b3d31955 | 606 | if (dv->writemostly == 1) |
d8def61c | 607 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 DW |
608 | if (tst->ss->external) { |
609 | /* add a disk to an external metadata container | |
610 | * only if mdmon is around to see it | |
611 | */ | |
612 | struct mdinfo new_mdi; | |
613 | struct mdinfo *sra; | |
614 | int container_fd; | |
615 | int devnum = fd2devnum(fd); | |
616 | ||
617 | container_fd = open_dev_excl(devnum); | |
618 | if (container_fd < 0) { | |
619 | fprintf(stderr, Name ": add failed for %s:" | |
620 | " could not get exclusive access to container\n", | |
621 | dv->devname); | |
622 | return 1; | |
623 | } | |
624 | ||
625 | if (!mdmon_running(devnum)) { | |
626 | fprintf(stderr, Name ": add failed for %s: mdmon not running\n", | |
627 | dv->devname); | |
628 | close(container_fd); | |
629 | return 1; | |
630 | } | |
631 | ||
632 | sra = sysfs_read(container_fd, -1, 0); | |
633 | if (!sra) { | |
634 | fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", | |
635 | dv->devname); | |
636 | close(container_fd); | |
637 | return 1; | |
638 | } | |
639 | sra->array.level = LEVEL_CONTAINER; | |
640 | /* Need to set data_offset and component_size */ | |
641 | tst->ss->getinfo_super(tst, &new_mdi); | |
642 | new_mdi.disk.major = disc.major; | |
643 | new_mdi.disk.minor = disc.minor; | |
644 | if (sysfs_add_disk(sra, &new_mdi) != 0) { | |
645 | fprintf(stderr, Name ": add new device to external metadata" | |
646 | " failed for %s\n", dv->devname); | |
647 | close(container_fd); | |
648 | return 1; | |
649 | } | |
650 | ping_monitor(devnum2devname(devnum)); | |
651 | sysfs_free(sra); | |
652 | close(container_fd); | |
653 | } else if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
f277ce36 NB |
654 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", |
655 | dv->devname, j, strerror(errno)); | |
682c7051 NB |
656 | return 1; |
657 | } | |
dab6685f NB |
658 | if (verbose >= 0) |
659 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
660 | break; |
661 | ||
662 | case 'r': | |
663 | /* hot remove */ | |
f7e7067b | 664 | if (tst->subarray[0]) { |
f7dd881f DW |
665 | fprintf(stderr, Name ": Cannot remove disks from a" |
666 | " \'member\' array, perform this" | |
667 | " operation on the parent container\n"); | |
668 | return 1; | |
f94d52f4 NB |
669 | } |
670 | if (tst->ss->external) { | |
671 | /* To remove a device from a container, we must | |
672 | * check that it isn't in use in an array. | |
673 | * This involves looking in the 'holders' | |
674 | * directory - there must be just one entry, | |
675 | * the container. | |
676 | * To ensure that it doesn't get used as a | |
677 | * hold spare while we are checking, we | |
678 | * get an O_EXCL open on the container | |
679 | */ | |
680 | int dnum = fd2devnum(fd); | |
681 | lfd = open_dev_excl(dnum); | |
682 | if (lfd < 0) { | |
683 | fprintf(stderr, Name | |
684 | ": Cannot get exclusive access " | |
685 | " to container - odd\n"); | |
686 | return 1; | |
687 | } | |
688 | if (!sysfs_unique_holder(dnum, stb.st_rdev)) { | |
689 | fprintf(stderr, Name | |
690 | ": %s is %s, cannot remove.\n", | |
691 | dnprintable, | |
692 | errno == EEXIST ? "still in use": | |
693 | "not a member"); | |
694 | close(lfd); | |
695 | return 1; | |
696 | } | |
697 | } | |
82b27616 | 698 | /* FIXME check that it is a current member */ |
f94d52f4 NB |
699 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); |
700 | if (err && errno == ENODEV) { | |
701 | /* Old kernels rejected this if no personality | |
702 | * registered */ | |
703 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
704 | struct mdinfo *dv = NULL; | |
705 | if (sra) | |
706 | dv = sra->devs; | |
707 | for ( ; dv ; dv=dv->next) | |
708 | if (dv->disk.major == major(stb.st_rdev) && | |
709 | dv->disk.minor == minor(stb.st_rdev)) | |
710 | break; | |
711 | if (dv) | |
712 | err = sysfs_set_str(sra, dv, | |
713 | "state", "remove"); | |
714 | else | |
715 | err = -1; | |
716 | if (sra) | |
717 | sysfs_free(sra); | |
718 | } | |
719 | if (err) { | |
b80da661 NB |
720 | fprintf(stderr, Name ": hot remove failed " |
721 | "for %s: %s\n", dnprintable, | |
722 | strerror(errno)); | |
f94d52f4 NB |
723 | if (lfd >= 0) |
724 | close(lfd); | |
682c7051 NB |
725 | return 1; |
726 | } | |
313a4a82 DW |
727 | if (tst->ss->external) { |
728 | /* | |
729 | * Before dropping our exclusive open we make an | |
730 | * attempt at preventing mdmon from seeing an | |
731 | * 'add' event before reconciling this 'remove' | |
732 | * event. | |
733 | */ | |
734 | char *name = devnum2devname(fd2devnum(fd)); | |
735 | ||
736 | if (!name) { | |
737 | fprintf(stderr, Name ": unable to get container name\n"); | |
738 | return 1; | |
739 | } | |
740 | ||
741 | ping_manager(name); | |
742 | free(name); | |
743 | } | |
f94d52f4 | 744 | close(lfd); |
dab6685f | 745 | if (verbose >= 0) |
b80da661 NB |
746 | fprintf(stderr, Name ": hot removed %s\n", |
747 | dnprintable); | |
682c7051 NB |
748 | break; |
749 | ||
750 | case 'f': /* set faulty */ | |
751 | /* FIXME check current member */ | |
cd29a5c8 | 752 | if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) { |
b83d95f3 | 753 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 754 | dnprintable, strerror(errno)); |
682c7051 NB |
755 | return 1; |
756 | } | |
dab6685f NB |
757 | if (verbose >= 0) |
758 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 759 | dnprintable, devname); |
682c7051 NB |
760 | break; |
761 | } | |
762 | } | |
763 | return 0; | |
aba69144 | 764 | |
64c4757e | 765 | } |
1f48664b NB |
766 | |
767 | int autodetect(void) | |
768 | { | |
769 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
770 | int rv = 1; | |
771 | int fd = dev_open("9:0", O_RDONLY); | |
772 | if (fd >= 0) { | |
773 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
774 | rv = 0; | |
775 | close(fd); | |
776 | } | |
777 | return rv; | |
778 | } | |
435d4ebb | 779 | #endif |