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Add missing 'continue' in Grow_restart.
[thirdparty/mdadm.git] / Manage.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
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@suse.de>
23 */
24
25 #include "mdadm.h"
26 #include "md_u.h"
27 #include "md_p.h"
28 #include <ctype.h>
29
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
34 int Manage_ro(char *devname, int fd, int readonly)
35 {
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;
44 #ifndef MDASSEMBLE
45 struct mdinfo *mdi;
46 #endif
47
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 }
52 #ifndef MDASSEMBLE
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 }
94 #endif
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 }
100
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)) {
109 fprintf(stderr, Name ": failed to set writable for %s: %s\n",
110 devname, strerror(errno));
111 return 1;
112 }
113 }
114 return 0;
115 }
116
117 #ifndef MDASSEMBLE
118
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);
148 if (path) {
149 if (isdigit(pe[-1]))
150 sprintf(pe, "p%d", part);
151 else
152 sprintf(pe, "%d", part);
153 }
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
167 int Manage_runstop(char *devname, int fd, int runstop, int quiet)
168 {
169 /* Run or stop the array. array must already be configured
170 * required >= 0.90.0
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.
174 */
175 mdu_param_t param; /* unused */
176
177 if (runstop == -1 && md_get_version(fd) < 9000) {
178 if (ioctl(fd, STOP_MD, 0)) {
179 if (quiet == 0) fprintf(stderr,
180 Name ": stopping device %s "
181 "failed: %s\n",
182 devname, strerror(errno));
183 return 1;
184 }
185 }
186
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 }
191 /*
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 }
197 */
198 if (runstop>0) {
199 if (ioctl(fd, RUN_ARRAY, &param)) {
200 fprintf(stderr, Name ": failed to run array %s: %s\n",
201 devname, strerror(errno));
202 return 1;
203 }
204 if (quiet <= 0)
205 fprintf(stderr, Name ": started %s\n", devname);
206 } else if (runstop < 0){
207 struct map_ent *map = NULL;
208 struct stat stb;
209 struct mdinfo *mdi;
210 int devnum;
211 /* If this is an mdmon managed array, just write 'inactive'
212 * to the array state and let mdmon clear up.
213 */
214 devnum = fd2devnum(fd);
215 mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION);
216 if (mdi &&
217 mdi->array.level > 0 &&
218 is_subarray(mdi->text_version)) {
219 /* This is mdmon managed. */
220 close(fd);
221 if (sysfs_set_str(mdi, NULL,
222 "array_state", "inactive") < 0) {
223 if (quiet == 0)
224 fprintf(stderr, Name
225 ": failed to stop array %s: %s\n",
226 devname, strerror(errno));
227 return 1;
228 }
229
230 /* Give monitor a chance to act */
231 ping_monitor(mdi->text_version);
232
233 fd = open(devname, O_RDONLY);
234 } else if (mdi &&
235 mdi->array.major_version == -1 &&
236 mdi->array.minor_version == -2 &&
237 !is_subarray(mdi->text_version)) {
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);
243 }
244
245 if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) {
246 if (quiet == 0) {
247 fprintf(stderr, Name
248 ": failed to stop array %s: %s\n",
249 devname, strerror(errno));
250 if (errno == EBUSY)
251 fprintf(stderr, "Perhaps a running "
252 "process, mounted filesystem "
253 "or active volume group?\n");
254 }
255 if (mdi)
256 sysfs_free(mdi);
257 return 1;
258 }
259 /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array
260 * was stopped, so We'll do it here just to be sure. Drop any
261 * partitions as well...
262 */
263 if (fd >= 0)
264 ioctl(fd, BLKRRPART, 0);
265 if (mdi)
266 sysfs_uevent(mdi, "change");
267
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
277 if (quiet <= 0)
278 fprintf(stderr, Name ": stopped %s\n", devname);
279 if (devnum != NoMdDev) {
280 map_delete(&map, devnum);
281 map_write(map);
282 map_free(map);
283 }
284 }
285 return 0;
286 }
287
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
308 int Manage_subdevs(char *devname, int fd,
309 mddev_dev_t devlist, int verbose)
310 {
311 /* do something to each dev.
312 * devmode can be
313 * 'a' - add the device
314 * try HOT_ADD_DISK
315 * If that fails EINVAL, try ADD_NEW_DISK
316 * 'r' - remove the device HOT_REMOVE_DISK
317 * device can be 'faulty' or 'detached' in which case all
318 * matching devices are removed.
319 * 'f' - set the device faulty SET_DISK_FAULTY
320 * device can be 'detached' in which case any device that
321 * is inaccessible will be marked faulty.
322 */
323 mdu_array_info_t array;
324 mdu_disk_info_t disc;
325 unsigned long long array_size;
326 mddev_dev_t dv, next = NULL;
327 struct stat stb;
328 int j, jnext = 0;
329 int tfd;
330 struct supertype *st, *tst;
331 int duuid[4];
332 int ouuid[4];
333 int lfd = -1;
334
335 if (ioctl(fd, GET_ARRAY_INFO, &array)) {
336 fprintf(stderr, Name ": cannot get array info for %s\n",
337 devname);
338 return 1;
339 }
340
341 /* array.size is only 32 bit and may be truncated.
342 * So read from sysfs if possible, and record number of sectors
343 */
344
345 array_size = get_component_size(fd);
346 if (array_size <= 0)
347 array_size = array.size * 2;
348
349 tst = super_by_fd(fd);
350 if (!tst) {
351 fprintf(stderr, Name ": unsupport array - version %d.%d\n",
352 array.major_version, array.minor_version);
353 return 1;
354 }
355
356 for (dv = devlist, j=0 ; dv; dv = next, j = jnext) {
357 unsigned long long ldsize;
358 char dvname[20];
359 char *dnprintable = dv->devname;
360 int err;
361
362 next = dv->next;
363 jnext = 0;
364
365 if (strcmp(dv->devname, "failed")==0 ||
366 strcmp(dv->devname, "faulty")==0) {
367 if (dv->disposition != 'r') {
368 fprintf(stderr, Name ": %s only meaningful "
369 "with -r, not -%c\n",
370 dv->devname, dv->disposition);
371 return 1;
372 }
373 for (; j < array.raid_disks + array.nr_disks ; j++) {
374 disc.number = j;
375 if (ioctl(fd, GET_DISK_INFO, &disc))
376 continue;
377 if (disc.major == 0 && disc.minor == 0)
378 continue;
379 if ((disc.state & 1) == 0) /* faulty */
380 continue;
381 stb.st_rdev = makedev(disc.major, disc.minor);
382 next = dv;
383 jnext = j+1;
384 sprintf(dvname,"%d:%d", disc.major, disc.minor);
385 dnprintable = dvname;
386 break;
387 }
388 if (jnext == 0)
389 continue;
390 } else if (strcmp(dv->devname, "detached") == 0) {
391 if (dv->disposition != 'r' && dv->disposition != 'f') {
392 fprintf(stderr, Name ": %s only meaningful "
393 "with -r of -f, not -%c\n",
394 dv->devname, dv->disposition);
395 return 1;
396 }
397 for (; j < array.raid_disks + array.nr_disks; j++) {
398 int sfd;
399 disc.number = j;
400 if (ioctl(fd, GET_DISK_INFO, &disc))
401 continue;
402 if (disc.major == 0 && disc.minor == 0)
403 continue;
404 sprintf(dvname,"%d:%d", disc.major, disc.minor);
405 sfd = dev_open(dvname, O_RDONLY);
406 if (sfd >= 0) {
407 close(sfd);
408 continue;
409 }
410 if (dv->disposition == 'f' &&
411 (disc.state & 1) == 1) /* already faulty */
412 continue;
413 if (errno != ENXIO)
414 continue;
415 stb.st_rdev = makedev(disc.major, disc.minor);
416 next = dv;
417 jnext = j+1;
418 dnprintable = dvname;
419 break;
420 }
421 if (jnext == 0)
422 continue;
423 } else {
424 j = 0;
425
426 tfd = dev_open(dv->devname, O_RDONLY);
427 if (tfd < 0 || fstat(tfd, &stb) != 0) {
428 fprintf(stderr, Name ": cannot find %s: %s\n",
429 dv->devname, strerror(errno));
430 if (tfd >= 0)
431 close(tfd);
432 return 1;
433 }
434 close(tfd);
435 if ((stb.st_mode & S_IFMT) != S_IFBLK) {
436 fprintf(stderr, Name ": %s is not a "
437 "block device.\n",
438 dv->devname);
439 return 1;
440 }
441 }
442 switch(dv->disposition){
443 default:
444 fprintf(stderr, Name ": internal error - devmode[%s]=%d\n",
445 dv->devname, dv->disposition);
446 return 1;
447 case 'a':
448 /* add the device */
449 if (tst->subarray[0]) {
450 fprintf(stderr, Name ": Cannot add disks to a"
451 " \'member\' array, perform this"
452 " operation on the parent container\n");
453 return 1;
454 }
455 /* Make sure it isn't in use (in 2.6 or later) */
456 tfd = dev_open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT);
457 if (tfd < 0) {
458 fprintf(stderr, Name ": Cannot open %s: %s\n",
459 dv->devname, strerror(errno));
460 return 1;
461 }
462 remove_partitions(tfd);
463
464 st = dup_super(tst);
465
466 if (array.not_persistent==0)
467 st->ss->load_super(st, tfd, NULL);
468
469 if (!get_dev_size(tfd, dv->devname, &ldsize)) {
470 close(tfd);
471 return 1;
472 }
473 close(tfd);
474
475
476 if (!tst->ss->external &&
477 array.major_version == 0 &&
478 md_get_version(fd)%100 < 2) {
479 if (ioctl(fd, HOT_ADD_DISK,
480 (unsigned long)stb.st_rdev)==0) {
481 if (verbose >= 0)
482 fprintf(stderr, Name ": hot added %s\n",
483 dv->devname);
484 continue;
485 }
486
487 fprintf(stderr, Name ": hot add failed for %s: %s\n",
488 dv->devname, strerror(errno));
489 return 1;
490 }
491
492 if (array.not_persistent == 0 || tst->ss->external) {
493
494 /* need to find a sample superblock to copy, and
495 * a spare slot to use.
496 * For 'external' array (well, container based),
497 * We can just load the metadata for the array.
498 */
499 if (tst->ss->external) {
500 tst->ss->load_super(tst, fd, NULL);
501 } else for (j = 0; j < tst->max_devs; j++) {
502 char *dev;
503 int dfd;
504 disc.number = j;
505 if (ioctl(fd, GET_DISK_INFO, &disc))
506 continue;
507 if (disc.major==0 && disc.minor==0)
508 continue;
509 if ((disc.state & 4)==0) continue; /* sync */
510 /* Looks like a good device to try */
511 dev = map_dev(disc.major, disc.minor, 1);
512 if (!dev) continue;
513 dfd = dev_open(dev, O_RDONLY);
514 if (dfd < 0) continue;
515 if (tst->ss->load_super(tst, dfd,
516 NULL)) {
517 close(dfd);
518 continue;
519 }
520 close(dfd);
521 break;
522 }
523 /* FIXME this is a bad test to be using */
524 if (!tst->sb) {
525 fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n");
526 return 1;
527 }
528
529 /* Make sure device is large enough */
530 if (tst->ss->avail_size(tst, ldsize/512) <
531 array_size) {
532 fprintf(stderr, Name ": %s not large enough to join array\n",
533 dv->devname);
534 return 1;
535 }
536
537 /* Possibly this device was recently part of the array
538 * and was temporarily removed, and is now being re-added.
539 * If so, we can simply re-add it.
540 */
541 tst->ss->uuid_from_super(tst, duuid);
542
543 /* re-add doesn't work for version-1 superblocks
544 * before 2.6.18 :-(
545 */
546 if (array.major_version == 1 &&
547 get_linux_version() <= 2006018)
548 ;
549 else if (st->sb) {
550 st->ss->uuid_from_super(st, ouuid);
551 if (memcmp(duuid, ouuid, sizeof(ouuid))==0) {
552 /* looks close enough for now. Kernel
553 * will worry about whether a bitmap
554 * based reconstruction is possible.
555 */
556 struct mdinfo mdi;
557 st->ss->getinfo_super(st, &mdi);
558 disc.major = major(stb.st_rdev);
559 disc.minor = minor(stb.st_rdev);
560 disc.number = mdi.disk.number;
561 disc.raid_disk = mdi.disk.raid_disk;
562 disc.state = mdi.disk.state;
563 if (dv->writemostly == 1)
564 disc.state |= 1 << MD_DISK_WRITEMOSTLY;
565 if (dv->writemostly == 2)
566 disc.state &= ~(1 << MD_DISK_WRITEMOSTLY);
567 if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) {
568 if (verbose >= 0)
569 fprintf(stderr, Name ": re-added %s\n", dv->devname);
570 continue;
571 }
572 if (errno == ENOMEM || errno == EROFS) {
573 fprintf(stderr, Name ": add new device failed for %s: %s\n",
574 dv->devname, strerror(errno));
575 return 1;
576 }
577 /* fall back on normal-add */
578 }
579 }
580 } else {
581 /* non-persistent. Must ensure that new drive
582 * is at least array.size big.
583 */
584 if (ldsize/512 < array_size) {
585 fprintf(stderr, Name ": %s not large enough to join array\n",
586 dv->devname);
587 return 1;
588 }
589 }
590 /* in 2.6.17 and earlier, version-1 superblocks won't
591 * use the number we write, but will choose a free number.
592 * we must choose the same free number, which requires
593 * starting at 'raid_disks' and counting up
594 */
595 for (j = array.raid_disks; j< tst->max_devs; j++) {
596 disc.number = j;
597 if (ioctl(fd, GET_DISK_INFO, &disc))
598 break;
599 if (disc.major==0 && disc.minor==0)
600 break;
601 if (disc.state & 8) /* removed */
602 break;
603 }
604 disc.major = major(stb.st_rdev);
605 disc.minor = minor(stb.st_rdev);
606 disc.number =j;
607 disc.state = 0;
608 if (array.not_persistent==0 || tst->ss->external) {
609 int dfd;
610 if (dv->writemostly == 1)
611 disc.state |= 1 << MD_DISK_WRITEMOSTLY;
612 dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT);
613 if (tst->ss->add_to_super(tst, &disc, dfd,
614 dv->devname)) {
615 close(dfd);
616 return 1;
617 }
618 /* write_init_super will close 'dfd' */
619 if (tst->ss->external)
620 /* mdmon will write the metadata */
621 close(dfd);
622 else if (tst->ss->write_init_super(tst))
623 return 1;
624 } else if (dv->re_add) {
625 /* this had better be raid1.
626 * As we are "--re-add"ing we must find a spare slot
627 * to fill.
628 */
629 char *used = malloc(array.raid_disks);
630 memset(used, 0, array.raid_disks);
631 for (j=0; j< tst->max_devs; j++) {
632 mdu_disk_info_t disc2;
633 disc2.number = j;
634 if (ioctl(fd, GET_DISK_INFO, &disc2))
635 continue;
636 if (disc2.major==0 && disc2.minor==0)
637 continue;
638 if (disc2.state & 8) /* removed */
639 continue;
640 if (disc2.raid_disk < 0)
641 continue;
642 if (disc2.raid_disk > array.raid_disks)
643 continue;
644 used[disc2.raid_disk] = 1;
645 }
646 for (j=0 ; j<array.raid_disks; j++)
647 if (!used[j]) {
648 disc.raid_disk = j;
649 disc.state |= (1<<MD_DISK_SYNC);
650 break;
651 }
652 }
653 if (dv->writemostly == 1)
654 disc.state |= (1 << MD_DISK_WRITEMOSTLY);
655 if (tst->ss->external) {
656 /* add a disk to an external metadata container
657 * only if mdmon is around to see it
658 */
659 struct mdinfo new_mdi;
660 struct mdinfo *sra;
661 int container_fd;
662 int devnum = fd2devnum(fd);
663
664 container_fd = open_dev_excl(devnum);
665 if (container_fd < 0) {
666 fprintf(stderr, Name ": add failed for %s:"
667 " could not get exclusive access to container\n",
668 dv->devname);
669 return 1;
670 }
671
672 if (!mdmon_running(devnum)) {
673 fprintf(stderr, Name ": add failed for %s: mdmon not running\n",
674 dv->devname);
675 close(container_fd);
676 return 1;
677 }
678
679 sra = sysfs_read(container_fd, -1, 0);
680 if (!sra) {
681 fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n",
682 dv->devname);
683 close(container_fd);
684 return 1;
685 }
686 sra->array.level = LEVEL_CONTAINER;
687 /* Need to set data_offset and component_size */
688 tst->ss->getinfo_super(tst, &new_mdi);
689 new_mdi.disk.major = disc.major;
690 new_mdi.disk.minor = disc.minor;
691 if (sysfs_add_disk(sra, &new_mdi, 0) != 0) {
692 fprintf(stderr, Name ": add new device to external metadata"
693 " failed for %s\n", dv->devname);
694 close(container_fd);
695 return 1;
696 }
697 ping_monitor(devnum2devname(devnum));
698 sysfs_free(sra);
699 close(container_fd);
700 } else if (ioctl(fd, ADD_NEW_DISK, &disc)) {
701 fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
702 dv->devname, j, strerror(errno));
703 return 1;
704 }
705 if (verbose >= 0)
706 fprintf(stderr, Name ": added %s\n", dv->devname);
707 break;
708
709 case 'r':
710 /* hot remove */
711 if (tst->subarray[0]) {
712 fprintf(stderr, Name ": Cannot remove disks from a"
713 " \'member\' array, perform this"
714 " operation on the parent container\n");
715 return 1;
716 }
717 if (tst->ss->external) {
718 /* To remove a device from a container, we must
719 * check that it isn't in use in an array.
720 * This involves looking in the 'holders'
721 * directory - there must be just one entry,
722 * the container.
723 * To ensure that it doesn't get used as a
724 * hold spare while we are checking, we
725 * get an O_EXCL open on the container
726 */
727 int dnum = fd2devnum(fd);
728 lfd = open_dev_excl(dnum);
729 if (lfd < 0) {
730 fprintf(stderr, Name
731 ": Cannot get exclusive access "
732 " to container - odd\n");
733 return 1;
734 }
735 /* in the detached case it is not possible to
736 * check if we are the unique holder, so just
737 * rely on the 'detached' checks
738 */
739 if (strcmp(dv->devname, "detached") == 0 ||
740 sysfs_unique_holder(dnum, stb.st_rdev))
741 /* pass */;
742 else {
743 fprintf(stderr, Name
744 ": %s is %s, cannot remove.\n",
745 dnprintable,
746 errno == EEXIST ? "still in use":
747 "not a member");
748 close(lfd);
749 return 1;
750 }
751 }
752 /* FIXME check that it is a current member */
753 err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev);
754 if (err && errno == ENODEV) {
755 /* Old kernels rejected this if no personality
756 * registered */
757 struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS);
758 struct mdinfo *dv = NULL;
759 if (sra)
760 dv = sra->devs;
761 for ( ; dv ; dv=dv->next)
762 if (dv->disk.major == major(stb.st_rdev) &&
763 dv->disk.minor == minor(stb.st_rdev))
764 break;
765 if (dv)
766 err = sysfs_set_str(sra, dv,
767 "state", "remove");
768 else
769 err = -1;
770 if (sra)
771 sysfs_free(sra);
772 }
773 if (err) {
774 fprintf(stderr, Name ": hot remove failed "
775 "for %s: %s\n", dnprintable,
776 strerror(errno));
777 if (lfd >= 0)
778 close(lfd);
779 return 1;
780 }
781 if (tst->ss->external) {
782 /*
783 * Before dropping our exclusive open we make an
784 * attempt at preventing mdmon from seeing an
785 * 'add' event before reconciling this 'remove'
786 * event.
787 */
788 char *name = devnum2devname(fd2devnum(fd));
789
790 if (!name) {
791 fprintf(stderr, Name ": unable to get container name\n");
792 return 1;
793 }
794
795 ping_manager(name);
796 free(name);
797 }
798 close(lfd);
799 if (verbose >= 0)
800 fprintf(stderr, Name ": hot removed %s\n",
801 dnprintable);
802 break;
803
804 case 'f': /* set faulty */
805 /* FIXME check current member */
806 if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) {
807 fprintf(stderr, Name ": set device faulty failed for %s: %s\n",
808 dnprintable, strerror(errno));
809 return 1;
810 }
811 if (verbose >= 0)
812 fprintf(stderr, Name ": set %s faulty in %s\n",
813 dnprintable, devname);
814 break;
815 }
816 }
817 return 0;
818
819 }
820
821 int autodetect(void)
822 {
823 /* Open any md device, and issue the RAID_AUTORUN ioctl */
824 int rv = 1;
825 int fd = dev_open("9:0", O_RDONLY);
826 if (fd >= 0) {
827 if (ioctl(fd, RAID_AUTORUN, 0) == 0)
828 rv = 0;
829 close(fd);
830 }
831 return rv;
832 }
833 #endif
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