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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" | |
4ccad7b1 | 33 | #include <ctype.h> |
64c4757e | 34 | |
82b27616 NB |
35 | #define REGISTER_DEV _IO (MD_MAJOR, 1) |
36 | #define START_MD _IO (MD_MAJOR, 2) | |
37 | #define STOP_MD _IO (MD_MAJOR, 3) | |
38 | ||
64c4757e NB |
39 | int Manage_ro(char *devname, int fd, int readonly) |
40 | { | |
682c7051 NB |
41 | /* switch to readonly or rw |
42 | * | |
43 | * requires >= 0.90.0 | |
44 | * first check that array is runing | |
45 | * use RESTART_ARRAY_RW or STOP_ARRAY_RO | |
46 | * | |
47 | */ | |
48 | mdu_array_info_t array; | |
0e600426 | 49 | #ifndef MDASSEMBLE |
e9dd1598 | 50 | struct mdinfo *mdi; |
0e600426 | 51 | #endif |
aba69144 | 52 | |
682c7051 NB |
53 | if (md_get_version(fd) < 9000) { |
54 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
55 | return 1; | |
56 | } | |
0e600426 | 57 | #ifndef MDASSEMBLE |
e9dd1598 N |
58 | /* If this is an externally-manage array, we need to modify the |
59 | * metadata_version so that mdmon doesn't undo our change. | |
60 | */ | |
61 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); | |
62 | if (mdi && | |
63 | mdi->array.major_version == -1 && | |
64 | mdi->array.level > 0 && | |
65 | is_subarray(mdi->text_version)) { | |
66 | char vers[64]; | |
67 | strcpy(vers, "external:"); | |
68 | strcat(vers, mdi->text_version); | |
69 | if (readonly > 0) { | |
70 | int rv; | |
71 | /* We set readonly ourselves. */ | |
72 | vers[9] = '-'; | |
73 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
74 | ||
75 | close(fd); | |
76 | rv = sysfs_set_str(mdi, NULL, "array_state", "readonly"); | |
77 | ||
78 | if (rv < 0) { | |
79 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
80 | devname, strerror(errno)); | |
81 | ||
82 | vers[9] = mdi->text_version[0]; | |
83 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
84 | return 1; | |
85 | } | |
86 | } else { | |
87 | char *cp; | |
88 | /* We cannot set read/write - must signal mdmon */ | |
89 | vers[9] = '/'; | |
90 | sysfs_set_str(mdi, NULL, "metadata_version", vers); | |
91 | ||
92 | cp = strchr(vers+10, '/'); | |
93 | if (*cp) | |
94 | *cp = 0; | |
95 | ping_monitor(vers+10); | |
96 | } | |
97 | return 0; | |
98 | } | |
0e600426 | 99 | #endif |
682c7051 NB |
100 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
101 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
102 | devname); | |
103 | return 1; | |
104 | } | |
aba69144 | 105 | |
682c7051 NB |
106 | if (readonly>0) { |
107 | if (ioctl(fd, STOP_ARRAY_RO, NULL)) { | |
108 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
109 | devname, strerror(errno)); | |
110 | return 1; | |
111 | } | |
112 | } else if (readonly < 0) { | |
113 | if (ioctl(fd, RESTART_ARRAY_RW, NULL)) { | |
82b27616 | 114 | fprintf(stderr, Name ": failed to set writable for %s: %s\n", |
682c7051 NB |
115 | devname, strerror(errno)); |
116 | return 1; | |
117 | } | |
118 | } | |
aba69144 | 119 | return 0; |
64c4757e NB |
120 | } |
121 | ||
435d4ebb LB |
122 | #ifndef MDASSEMBLE |
123 | ||
4ccad7b1 N |
124 | static void remove_devices(int devnum, char *path) |
125 | { | |
126 | /* Remove all 'standard' devices for 'devnum', including | |
127 | * partitions. Also remove names at 'path' - possibly with | |
128 | * partition suffixes - which link to those names. | |
129 | */ | |
130 | char base[40]; | |
131 | char *path2; | |
132 | char link[1024]; | |
133 | int n; | |
134 | int part; | |
135 | char *be; | |
136 | char *pe; | |
137 | ||
138 | if (devnum >= 0) | |
139 | sprintf(base, "/dev/md%d", devnum); | |
140 | else | |
141 | sprintf(base, "/dev/md_d%d", -1-devnum); | |
142 | be = base + strlen(base); | |
143 | if (path) { | |
144 | path2 = malloc(strlen(path)+20); | |
145 | strcpy(path2, path); | |
146 | pe = path2 + strlen(path2); | |
147 | } else | |
148 | path = NULL; | |
149 | ||
150 | for (part = 0; part < 16; part++) { | |
151 | if (part) { | |
152 | sprintf(be, "p%d", part); | |
153 | if (isdigit(pe[-1])) | |
154 | sprintf(pe, "p%d", part); | |
155 | else | |
156 | sprintf(pe, "%d", part); | |
157 | } | |
158 | /* FIXME test if really is md device ?? */ | |
159 | unlink(base); | |
160 | if (path) { | |
161 | n = readlink(path2, link, sizeof(link)); | |
162 | if (n && strlen(base) == n && | |
163 | strncmp(link, base, n) == 0) | |
164 | unlink(path2); | |
165 | } | |
166 | } | |
167 | } | |
168 | ||
169 | ||
91f068bf | 170 | int Manage_runstop(char *devname, int fd, int runstop, int quiet) |
64c4757e | 171 | { |
682c7051 NB |
172 | /* Run or stop the array. array must already be configured |
173 | * required >= 0.90.0 | |
4b9d39fc N |
174 | * Only print failure messages if quiet == 0; |
175 | * quiet > 0 means really be quiet | |
176 | * quiet < 0 means we will try again if it fails. | |
682c7051 | 177 | */ |
682c7051 | 178 | mdu_param_t param; /* unused */ |
82b27616 NB |
179 | |
180 | if (runstop == -1 && md_get_version(fd) < 9000) { | |
181 | if (ioctl(fd, STOP_MD, 0)) { | |
4b9d39fc N |
182 | if (quiet == 0) fprintf(stderr, |
183 | Name ": stopping device %s " | |
184 | "failed: %s\n", | |
185 | devname, strerror(errno)); | |
82b27616 NB |
186 | return 1; |
187 | } | |
188 | } | |
aba69144 | 189 | |
682c7051 NB |
190 | if (md_get_version(fd) < 9000) { |
191 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
192 | return 1; | |
193 | } | |
82b27616 | 194 | /* |
682c7051 NB |
195 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { |
196 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
197 | devname); | |
198 | return 1; | |
199 | } | |
82b27616 | 200 | */ |
682c7051 NB |
201 | if (runstop>0) { |
202 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
203 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
204 | devname, strerror(errno)); | |
205 | return 1; | |
206 | } | |
8382f19b NB |
207 | if (quiet <= 0) |
208 | fprintf(stderr, Name ": started %s\n", devname); | |
682c7051 | 209 | } else if (runstop < 0){ |
8382f19b NB |
210 | struct map_ent *map = NULL; |
211 | struct stat stb; | |
daf7a3ce | 212 | struct mdinfo *mdi; |
4ccad7b1 | 213 | int devnum; |
daf7a3ce NB |
214 | /* If this is an mdmon managed array, just write 'inactive' |
215 | * to the array state and let mdmon clear up. | |
216 | */ | |
4ccad7b1 | 217 | devnum = fd2devnum(fd); |
daf7a3ce NB |
218 | mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION); |
219 | if (mdi && | |
220 | mdi->array.level > 0 && | |
3c558363 | 221 | is_subarray(mdi->text_version)) { |
daf7a3ce NB |
222 | /* This is mdmon managed. */ |
223 | close(fd); | |
224 | if (sysfs_set_str(mdi, NULL, | |
225 | "array_state", "inactive") < 0) { | |
4b9d39fc | 226 | if (quiet == 0) |
daf7a3ce | 227 | fprintf(stderr, Name |
4b9d39fc | 228 | ": failed to stop array %s: %s\n", |
daf7a3ce NB |
229 | devname, strerror(errno)); |
230 | return 1; | |
231 | } | |
232 | ||
233 | /* Give monitor a chance to act */ | |
c94709e8 | 234 | ping_monitor(mdi->text_version); |
daf7a3ce NB |
235 | |
236 | fd = open(devname, O_RDONLY); | |
ada6c239 N |
237 | } else if (mdi && |
238 | mdi->array.major_version == -1 && | |
239 | mdi->array.minor_version == -2 && | |
3c558363 | 240 | !is_subarray(mdi->text_version)) { |
ada6c239 N |
241 | /* container, possibly mdmon-managed. |
242 | * Make sure mdmon isn't opening it, which | |
243 | * would interfere with the 'stop' | |
244 | */ | |
245 | ping_monitor(mdi->sys_name); | |
daf7a3ce | 246 | } |
daf7a3ce NB |
247 | |
248 | if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) { | |
37ea3936 | 249 | if (quiet == 0) { |
daf7a3ce | 250 | fprintf(stderr, Name |
4b9d39fc | 251 | ": failed to stop array %s: %s\n", |
91f068bf | 252 | devname, strerror(errno)); |
d927f3c4 NB |
253 | if (errno == EBUSY) |
254 | fprintf(stderr, "Perhaps a running " | |
255 | "process, mounted filesystem " | |
256 | "or active volume group?\n"); | |
257 | } | |
97590376 N |
258 | if (mdi) |
259 | sysfs_free(mdi); | |
682c7051 NB |
260 | return 1; |
261 | } | |
97590376 | 262 | /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array |
d49410d3 N |
263 | * was stopped, so We'll do it here just to be sure. Drop any |
264 | * partitions as well... | |
97590376 | 265 | */ |
d49410d3 N |
266 | if (fd >= 0) |
267 | ioctl(fd, BLKRRPART, 0); | |
97590376 N |
268 | if (mdi) |
269 | sysfs_uevent(mdi, "change"); | |
daf7a3ce | 270 | |
4ccad7b1 N |
271 | |
272 | if (devnum != NoMdDev && | |
273 | (stat("/dev/.udev", &stb) != 0 || | |
274 | check_env("MDADM_NO_UDEV"))) { | |
275 | struct map_ent *mp = map_by_devnum(&map, devnum); | |
276 | remove_devices(devnum, mp ? mp->path : NULL); | |
277 | } | |
278 | ||
279 | ||
ab56093f NB |
280 | if (quiet <= 0) |
281 | fprintf(stderr, Name ": stopped %s\n", devname); | |
4ccad7b1 | 282 | if (devnum != NoMdDev) { |
8382f19b NB |
283 | map_delete(&map, devnum); |
284 | map_write(map); | |
285 | map_free(map); | |
286 | } | |
682c7051 NB |
287 | } |
288 | return 0; | |
64c4757e NB |
289 | } |
290 | ||
dd0781e5 NB |
291 | int Manage_resize(char *devname, int fd, long long size, int raid_disks) |
292 | { | |
293 | mdu_array_info_t info; | |
294 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
295 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
296 | devname, strerror(errno)); | |
297 | return 1; | |
298 | } | |
299 | if (size >= 0) | |
300 | info.size = size; | |
301 | if (raid_disks > 0) | |
302 | info.raid_disks = raid_disks; | |
303 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
304 | fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n", | |
305 | devname, strerror(errno)); | |
306 | return 1; | |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
b5e64645 NB |
311 | int Manage_reconfig(char *devname, int fd, int layout) |
312 | { | |
313 | mdu_array_info_t info; | |
314 | if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) { | |
315 | fprintf(stderr, Name ": Cannot get array information for %s: %s\n", | |
316 | devname, strerror(errno)); | |
317 | return 1; | |
318 | } | |
319 | info.layout = layout; | |
320 | printf("layout set to %d\n", info.layout); | |
321 | if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) { | |
322 | fprintf(stderr, Name ": Cannot set layout for %s: %s\n", | |
323 | devname, strerror(errno)); | |
324 | return 1; | |
325 | } | |
326 | return 0; | |
327 | } | |
dd0781e5 | 328 | |
64c4757e | 329 | int Manage_subdevs(char *devname, int fd, |
dab6685f | 330 | mddev_dev_t devlist, int verbose) |
cd29a5c8 | 331 | { |
682c7051 NB |
332 | /* do something to each dev. |
333 | * devmode can be | |
334 | * 'a' - add the device | |
335 | * try HOT_ADD_DISK | |
336 | * If that fails EINVAL, try ADD_NEW_DISK | |
337 | * 'r' - remove the device HOT_REMOVE_DISK | |
b80da661 NB |
338 | * device can be 'faulty' or 'detached' in which case all |
339 | * matching devices are removed. | |
682c7051 | 340 | * 'f' - set the device faulty SET_DISK_FAULTY |
b80da661 NB |
341 | * device can be 'detached' in which case any device that |
342 | * is inaccessible will be marked faulty. | |
682c7051 NB |
343 | */ |
344 | mdu_array_info_t array; | |
345 | mdu_disk_info_t disc; | |
7a3be72f | 346 | unsigned long long array_size; |
b80da661 | 347 | mddev_dev_t dv, next = NULL; |
682c7051 | 348 | struct stat stb; |
b80da661 | 349 | int j, jnext = 0; |
0fbf459d | 350 | int tfd; |
3da92f27 | 351 | struct supertype *st, *tst; |
fe80f49b NB |
352 | int duuid[4]; |
353 | int ouuid[4]; | |
f94d52f4 | 354 | int lfd = -1; |
682c7051 NB |
355 | |
356 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
357 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
358 | devname); | |
359 | return 1; | |
360 | } | |
3da92f27 | 361 | |
7a3be72f NB |
362 | /* array.size is only 32 bit and may be truncated. |
363 | * So read from sysfs if possible, and record number of sectors | |
364 | */ | |
365 | ||
366 | array_size = get_component_size(fd); | |
367 | if (array_size <= 0) | |
368 | array_size = array.size * 2; | |
369 | ||
1686dc25 | 370 | tst = super_by_fd(fd); |
3da92f27 NB |
371 | if (!tst) { |
372 | fprintf(stderr, Name ": unsupport array - version %d.%d\n", | |
373 | array.major_version, array.minor_version); | |
374 | return 1; | |
375 | } | |
376 | ||
b80da661 | 377 | for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { |
4a39c6f2 | 378 | unsigned long long ldsize; |
b80da661 NB |
379 | char dvname[20]; |
380 | char *dnprintable = dv->devname; | |
f94d52f4 | 381 | int err; |
4a39c6f2 | 382 | |
b80da661 NB |
383 | next = dv->next; |
384 | jnext = 0; | |
385 | ||
386 | if (strcmp(dv->devname, "failed")==0 || | |
387 | strcmp(dv->devname, "faulty")==0) { | |
388 | if (dv->disposition != 'r') { | |
389 | fprintf(stderr, Name ": %s only meaningful " | |
390 | "with -r, not -%c\n", | |
391 | dv->devname, dv->disposition); | |
392 | return 1; | |
393 | } | |
394 | for (; j < array.raid_disks + array.nr_disks ; j++) { | |
395 | disc.number = j; | |
396 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
397 | continue; | |
398 | if (disc.major == 0 && disc.minor == 0) | |
399 | continue; | |
400 | if ((disc.state & 1) == 0) /* faulty */ | |
401 | continue; | |
402 | stb.st_rdev = makedev(disc.major, disc.minor); | |
403 | next = dv; | |
404 | jnext = j+1; | |
405 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
406 | dnprintable = dvname; | |
407 | break; | |
408 | } | |
409 | if (jnext == 0) | |
410 | continue; | |
411 | } else if (strcmp(dv->devname, "detached") == 0) { | |
412 | if (dv->disposition != 'r' && dv->disposition != 'f') { | |
413 | fprintf(stderr, Name ": %s only meaningful " | |
414 | "with -r of -f, not -%c\n", | |
415 | dv->devname, dv->disposition); | |
416 | return 1; | |
417 | } | |
418 | for (; j < array.raid_disks + array.nr_disks; j++) { | |
419 | int sfd; | |
420 | disc.number = j; | |
421 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
422 | continue; | |
423 | if (disc.major == 0 && disc.minor == 0) | |
424 | continue; | |
425 | sprintf(dvname,"%d:%d", disc.major, disc.minor); | |
426 | sfd = dev_open(dvname, O_RDONLY); | |
427 | if (sfd >= 0) { | |
428 | close(sfd); | |
429 | continue; | |
430 | } | |
431 | if (dv->disposition == 'f' && | |
432 | (disc.state & 1) == 1) /* already faulty */ | |
433 | continue; | |
434 | if (errno != ENXIO) | |
435 | continue; | |
436 | stb.st_rdev = makedev(disc.major, disc.minor); | |
437 | next = dv; | |
438 | jnext = j+1; | |
439 | dnprintable = dvname; | |
440 | break; | |
441 | } | |
442 | if (jnext == 0) | |
443 | continue; | |
444 | } else { | |
445 | j = 0; | |
446 | ||
447 | if (stat(dv->devname, &stb)) { | |
448 | fprintf(stderr, Name ": cannot find %s: %s\n", | |
449 | dv->devname, strerror(errno)); | |
450 | return 1; | |
451 | } | |
452 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
453 | fprintf(stderr, Name ": %s is not a " | |
454 | "block device.\n", | |
455 | dv->devname); | |
456 | return 1; | |
457 | } | |
682c7051 | 458 | } |
cd29a5c8 | 459 | switch(dv->disposition){ |
682c7051 | 460 | default: |
c913b90e NB |
461 | fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", |
462 | dv->devname, dv->disposition); | |
682c7051 NB |
463 | return 1; |
464 | case 'a': | |
4a39c6f2 | 465 | /* add the device */ |
f7e7067b | 466 | if (tst->subarray[0]) { |
f7dd881f DW |
467 | fprintf(stderr, Name ": Cannot add disks to a" |
468 | " \'member\' array, perform this" | |
469 | " operation on the parent container\n"); | |
470 | return 1; | |
f94d52f4 | 471 | } |
f277ce36 | 472 | /* Make sure it isn't in use (in 2.6 or later) */ |
6416d527 | 473 | tfd = open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT); |
0fbf459d | 474 | if (tfd < 0) { |
d7eaf49f NB |
475 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
476 | dv->devname, strerror(errno)); | |
477 | return 1; | |
478 | } | |
25037aa8 | 479 | remove_partitions(tfd); |
3da92f27 | 480 | |
1686dc25 | 481 | st = dup_super(tst); |
3da92f27 | 482 | |
fe80f49b | 483 | if (array.not_persistent==0) |
3da92f27 NB |
484 | st->ss->load_super(st, tfd, NULL); |
485 | ||
beae1dfe | 486 | if (!get_dev_size(tfd, dv->devname, &ldsize)) { |
4a39c6f2 NB |
487 | close(tfd); |
488 | return 1; | |
4a39c6f2 | 489 | } |
0fbf459d | 490 | close(tfd); |
fe80f49b | 491 | |
f94d52f4 NB |
492 | |
493 | if (!tst->ss->external && | |
494 | array.major_version == 0 && | |
60d9a174 | 495 | md_get_version(fd)%100 < 2) { |
892debc8 NB |
496 | if (ioctl(fd, HOT_ADD_DISK, |
497 | (unsigned long)stb.st_rdev)==0) { | |
dab6685f NB |
498 | if (verbose >= 0) |
499 | fprintf(stderr, Name ": hot added %s\n", | |
500 | dv->devname); | |
892debc8 NB |
501 | continue; |
502 | } | |
503 | ||
cd29a5c8 | 504 | fprintf(stderr, Name ": hot add failed for %s: %s\n", |
892debc8 | 505 | dv->devname, strerror(errno)); |
cd29a5c8 NB |
506 | return 1; |
507 | } | |
892debc8 | 508 | |
43dad3d6 | 509 | if (array.not_persistent == 0 || tst->ss->external) { |
4a39c6f2 | 510 | |
fe80f49b | 511 | /* need to find a sample superblock to copy, and |
43dad3d6 DW |
512 | * a spare slot to use. |
513 | * For 'external' array (well, container based), | |
514 | * We can just load the metadata for the array. | |
fe80f49b | 515 | */ |
43dad3d6 DW |
516 | if (tst->ss->external) { |
517 | tst->ss->load_super(tst, fd, NULL); | |
518 | } else for (j = 0; j < tst->max_devs; j++) { | |
fe80f49b NB |
519 | char *dev; |
520 | int dfd; | |
521 | disc.number = j; | |
522 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
523 | continue; | |
524 | if (disc.major==0 && disc.minor==0) | |
525 | continue; | |
526 | if ((disc.state & 4)==0) continue; /* sync */ | |
527 | /* Looks like a good device to try */ | |
16c6fa80 | 528 | dev = map_dev(disc.major, disc.minor, 1); |
fe80f49b | 529 | if (!dev) continue; |
16c6fa80 | 530 | dfd = dev_open(dev, O_RDONLY); |
fe80f49b | 531 | if (dfd < 0) continue; |
3da92f27 NB |
532 | if (tst->ss->load_super(tst, dfd, |
533 | NULL)) { | |
fe80f49b NB |
534 | close(dfd); |
535 | continue; | |
536 | } | |
892debc8 | 537 | close(dfd); |
fe80f49b NB |
538 | break; |
539 | } | |
43dad3d6 | 540 | /* FIXME this is a bad test to be using */ |
3da92f27 | 541 | if (!tst->sb) { |
fe80f49b NB |
542 | fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n"); |
543 | return 1; | |
544 | } | |
2a528478 N |
545 | |
546 | /* Make sure device is large enough */ | |
547 | if (tst->ss->avail_size(tst, ldsize/512) < | |
548 | array_size) { | |
549 | fprintf(stderr, Name ": %s not large enough to join array\n", | |
550 | dv->devname); | |
551 | return 1; | |
552 | } | |
553 | ||
fe80f49b NB |
554 | /* Possibly this device was recently part of the array |
555 | * and was temporarily removed, and is now being re-added. | |
556 | * If so, we can simply re-add it. | |
557 | */ | |
3da92f27 | 558 | tst->ss->uuid_from_super(tst, duuid); |
7eae7080 NB |
559 | |
560 | /* re-add doesn't work for version-1 superblocks | |
561 | * before 2.6.18 :-( | |
562 | */ | |
563 | if (array.major_version == 1 && | |
564 | get_linux_version() <= 2006018) | |
565 | ; | |
3da92f27 NB |
566 | else if (st->sb) { |
567 | st->ss->uuid_from_super(st, ouuid); | |
fe80f49b | 568 | if (memcmp(duuid, ouuid, sizeof(ouuid))==0) { |
4d20d744 NB |
569 | /* looks close enough for now. Kernel |
570 | * will worry about whether a bitmap | |
571 | * based reconstruction is possible. | |
fe80f49b NB |
572 | */ |
573 | struct mdinfo mdi; | |
3da92f27 | 574 | st->ss->getinfo_super(st, &mdi); |
fe80f49b NB |
575 | disc.major = major(stb.st_rdev); |
576 | disc.minor = minor(stb.st_rdev); | |
577 | disc.number = mdi.disk.number; | |
578 | disc.raid_disk = mdi.disk.raid_disk; | |
579 | disc.state = mdi.disk.state; | |
b3d31955 | 580 | if (dv->writemostly == 1) |
4d20d744 | 581 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
b3d31955 N |
582 | if (dv->writemostly == 2) |
583 | disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); | |
fe80f49b NB |
584 | if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { |
585 | if (verbose >= 0) | |
586 | fprintf(stderr, Name ": re-added %s\n", dv->devname); | |
308e1801 | 587 | continue; |
fe80f49b NB |
588 | } |
589 | /* fall back on normal-add */ | |
590 | } | |
892debc8 | 591 | } |
4a39c6f2 NB |
592 | } else { |
593 | /* non-persistent. Must ensure that new drive | |
594 | * is at least array.size big. | |
595 | */ | |
7a3be72f | 596 | if (ldsize/512 < array_size) { |
4a39c6f2 NB |
597 | fprintf(stderr, Name ": %s not large enough to join array\n", |
598 | dv->devname); | |
599 | return 1; | |
600 | } | |
892debc8 | 601 | } |
7eae7080 NB |
602 | /* in 2.6.17 and earlier, version-1 superblocks won't |
603 | * use the number we write, but will choose a free number. | |
604 | * we must choose the same free number, which requires | |
605 | * starting at 'raid_disks' and counting up | |
606 | */ | |
3da92f27 | 607 | for (j = array.raid_disks; j< tst->max_devs; j++) { |
aa88f531 | 608 | disc.number = j; |
682c7051 NB |
609 | if (ioctl(fd, GET_DISK_INFO, &disc)) |
610 | break; | |
611 | if (disc.major==0 && disc.minor==0) | |
612 | break; | |
613 | if (disc.state & 8) /* removed */ | |
614 | break; | |
615 | } | |
0df46c2a NB |
616 | disc.major = major(stb.st_rdev); |
617 | disc.minor = minor(stb.st_rdev); | |
892debc8 NB |
618 | disc.number =j; |
619 | disc.state = 0; | |
43dad3d6 | 620 | if (array.not_persistent==0 || tst->ss->external) { |
111d01fc | 621 | int dfd; |
b3d31955 | 622 | if (dv->writemostly == 1) |
fe80f49b | 623 | disc.state |= 1 << MD_DISK_WRITEMOSTLY; |
6416d527 | 624 | dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); |
111d01fc NB |
625 | tst->ss->add_to_super(tst, &disc, dfd, |
626 | dv->devname); | |
627 | /* write_init_super will close 'dfd' */ | |
43dad3d6 DW |
628 | if (tst->ss->external) |
629 | /* mdmon will write the metadata */ | |
630 | close(dfd); | |
631 | else if (tst->ss->write_init_super(tst)) | |
fe80f49b NB |
632 | return 1; |
633 | } else if (dv->re_add) { | |
634 | /* this had better be raid1. | |
635 | * As we are "--re-add"ing we must find a spare slot | |
636 | * to fill. | |
637 | */ | |
638 | char *used = malloc(array.raid_disks); | |
639 | memset(used, 0, array.raid_disks); | |
3da92f27 | 640 | for (j=0; j< tst->max_devs; j++) { |
fe80f49b NB |
641 | mdu_disk_info_t disc2; |
642 | disc2.number = j; | |
643 | if (ioctl(fd, GET_DISK_INFO, &disc2)) | |
644 | continue; | |
645 | if (disc2.major==0 && disc2.minor==0) | |
646 | continue; | |
647 | if (disc2.state & 8) /* removed */ | |
648 | continue; | |
649 | if (disc2.raid_disk < 0) | |
650 | continue; | |
651 | if (disc2.raid_disk > array.raid_disks) | |
652 | continue; | |
653 | used[disc2.raid_disk] = 1; | |
654 | } | |
655 | for (j=0 ; j<array.raid_disks; j++) | |
656 | if (!used[j]) { | |
657 | disc.raid_disk = j; | |
658 | disc.state |= (1<<MD_DISK_SYNC); | |
659 | break; | |
660 | } | |
661 | } | |
b3d31955 | 662 | if (dv->writemostly == 1) |
d8def61c | 663 | disc.state |= (1 << MD_DISK_WRITEMOSTLY); |
43dad3d6 DW |
664 | if (tst->ss->external) { |
665 | /* add a disk to an external metadata container | |
666 | * only if mdmon is around to see it | |
667 | */ | |
668 | struct mdinfo new_mdi; | |
669 | struct mdinfo *sra; | |
670 | int container_fd; | |
671 | int devnum = fd2devnum(fd); | |
672 | ||
673 | container_fd = open_dev_excl(devnum); | |
674 | if (container_fd < 0) { | |
675 | fprintf(stderr, Name ": add failed for %s:" | |
676 | " could not get exclusive access to container\n", | |
677 | dv->devname); | |
678 | return 1; | |
679 | } | |
680 | ||
681 | if (!mdmon_running(devnum)) { | |
682 | fprintf(stderr, Name ": add failed for %s: mdmon not running\n", | |
683 | dv->devname); | |
684 | close(container_fd); | |
685 | return 1; | |
686 | } | |
687 | ||
688 | sra = sysfs_read(container_fd, -1, 0); | |
689 | if (!sra) { | |
690 | fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", | |
691 | dv->devname); | |
692 | close(container_fd); | |
693 | return 1; | |
694 | } | |
695 | sra->array.level = LEVEL_CONTAINER; | |
696 | /* Need to set data_offset and component_size */ | |
697 | tst->ss->getinfo_super(tst, &new_mdi); | |
698 | new_mdi.disk.major = disc.major; | |
699 | new_mdi.disk.minor = disc.minor; | |
700 | if (sysfs_add_disk(sra, &new_mdi) != 0) { | |
701 | fprintf(stderr, Name ": add new device to external metadata" | |
702 | " failed for %s\n", dv->devname); | |
703 | close(container_fd); | |
704 | return 1; | |
705 | } | |
706 | ping_monitor(devnum2devname(devnum)); | |
707 | sysfs_free(sra); | |
708 | close(container_fd); | |
709 | } else if (ioctl(fd, ADD_NEW_DISK, &disc)) { | |
f277ce36 NB |
710 | fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", |
711 | dv->devname, j, strerror(errno)); | |
682c7051 NB |
712 | return 1; |
713 | } | |
dab6685f NB |
714 | if (verbose >= 0) |
715 | fprintf(stderr, Name ": added %s\n", dv->devname); | |
682c7051 NB |
716 | break; |
717 | ||
718 | case 'r': | |
719 | /* hot remove */ | |
f7e7067b | 720 | if (tst->subarray[0]) { |
f7dd881f DW |
721 | fprintf(stderr, Name ": Cannot remove disks from a" |
722 | " \'member\' array, perform this" | |
723 | " operation on the parent container\n"); | |
724 | return 1; | |
f94d52f4 NB |
725 | } |
726 | if (tst->ss->external) { | |
727 | /* To remove a device from a container, we must | |
728 | * check that it isn't in use in an array. | |
729 | * This involves looking in the 'holders' | |
730 | * directory - there must be just one entry, | |
731 | * the container. | |
732 | * To ensure that it doesn't get used as a | |
733 | * hold spare while we are checking, we | |
734 | * get an O_EXCL open on the container | |
735 | */ | |
736 | int dnum = fd2devnum(fd); | |
737 | lfd = open_dev_excl(dnum); | |
738 | if (lfd < 0) { | |
739 | fprintf(stderr, Name | |
740 | ": Cannot get exclusive access " | |
741 | " to container - odd\n"); | |
742 | return 1; | |
743 | } | |
744 | if (!sysfs_unique_holder(dnum, stb.st_rdev)) { | |
745 | fprintf(stderr, Name | |
746 | ": %s is %s, cannot remove.\n", | |
747 | dnprintable, | |
748 | errno == EEXIST ? "still in use": | |
749 | "not a member"); | |
750 | close(lfd); | |
751 | return 1; | |
752 | } | |
753 | } | |
82b27616 | 754 | /* FIXME check that it is a current member */ |
f94d52f4 NB |
755 | err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); |
756 | if (err && errno == ENODEV) { | |
757 | /* Old kernels rejected this if no personality | |
758 | * registered */ | |
759 | struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); | |
760 | struct mdinfo *dv = NULL; | |
761 | if (sra) | |
762 | dv = sra->devs; | |
763 | for ( ; dv ; dv=dv->next) | |
764 | if (dv->disk.major == major(stb.st_rdev) && | |
765 | dv->disk.minor == minor(stb.st_rdev)) | |
766 | break; | |
767 | if (dv) | |
768 | err = sysfs_set_str(sra, dv, | |
769 | "state", "remove"); | |
770 | else | |
771 | err = -1; | |
772 | if (sra) | |
773 | sysfs_free(sra); | |
774 | } | |
775 | if (err) { | |
b80da661 NB |
776 | fprintf(stderr, Name ": hot remove failed " |
777 | "for %s: %s\n", dnprintable, | |
778 | strerror(errno)); | |
f94d52f4 NB |
779 | if (lfd >= 0) |
780 | close(lfd); | |
682c7051 NB |
781 | return 1; |
782 | } | |
313a4a82 DW |
783 | if (tst->ss->external) { |
784 | /* | |
785 | * Before dropping our exclusive open we make an | |
786 | * attempt at preventing mdmon from seeing an | |
787 | * 'add' event before reconciling this 'remove' | |
788 | * event. | |
789 | */ | |
790 | char *name = devnum2devname(fd2devnum(fd)); | |
791 | ||
792 | if (!name) { | |
793 | fprintf(stderr, Name ": unable to get container name\n"); | |
794 | return 1; | |
795 | } | |
796 | ||
797 | ping_manager(name); | |
798 | free(name); | |
799 | } | |
f94d52f4 | 800 | close(lfd); |
dab6685f | 801 | if (verbose >= 0) |
b80da661 NB |
802 | fprintf(stderr, Name ": hot removed %s\n", |
803 | dnprintable); | |
682c7051 NB |
804 | break; |
805 | ||
806 | case 'f': /* set faulty */ | |
807 | /* FIXME check current member */ | |
cd29a5c8 | 808 | if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) { |
b83d95f3 | 809 | fprintf(stderr, Name ": set device faulty failed for %s: %s\n", |
b80da661 | 810 | dnprintable, strerror(errno)); |
682c7051 NB |
811 | return 1; |
812 | } | |
dab6685f NB |
813 | if (verbose >= 0) |
814 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
b80da661 | 815 | dnprintable, devname); |
682c7051 NB |
816 | break; |
817 | } | |
818 | } | |
819 | return 0; | |
aba69144 | 820 | |
64c4757e | 821 | } |
1f48664b NB |
822 | |
823 | int autodetect(void) | |
824 | { | |
825 | /* Open any md device, and issue the RAID_AUTORUN ioctl */ | |
826 | int rv = 1; | |
827 | int fd = dev_open("9:0", O_RDONLY); | |
828 | if (fd >= 0) { | |
829 | if (ioctl(fd, RAID_AUTORUN, 0) == 0) | |
830 | rv = 0; | |
831 | close(fd); | |
832 | } | |
833 | return rv; | |
834 | } | |
435d4ebb | 835 | #endif |