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Handle extra 'grow' variations.
[thirdparty/mdadm.git] / Manage.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2006 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@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
30 #include "mdadm.h"
31 #include "md_u.h"
32 #include "md_p.h"
33 #include <ctype.h>
34
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
39 int Manage_ro(char *devname, int fd, int readonly)
40 {
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;
49 #ifndef MDASSEMBLE
50 struct mdinfo *mdi;
51 #endif
52
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 }
57 #ifndef MDASSEMBLE
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 }
99 #endif
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 }
105
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)) {
114 fprintf(stderr, Name ": failed to set writable for %s: %s\n",
115 devname, strerror(errno));
116 return 1;
117 }
118 }
119 return 0;
120 }
121
122 #ifndef MDASSEMBLE
123
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 (path) {
154 if (isdigit(pe[-1]))
155 sprintf(pe, "p%d", part);
156 else
157 sprintf(pe, "%d", part);
158 }
159 }
160 /* FIXME test if really is md device ?? */
161 unlink(base);
162 if (path) {
163 n = readlink(path2, link, sizeof(link));
164 if (n && strlen(base) == n &&
165 strncmp(link, base, n) == 0)
166 unlink(path2);
167 }
168 }
169 }
170
171
172 int Manage_runstop(char *devname, int fd, int runstop, int quiet)
173 {
174 /* Run or stop the array. array must already be configured
175 * required >= 0.90.0
176 * Only print failure messages if quiet == 0;
177 * quiet > 0 means really be quiet
178 * quiet < 0 means we will try again if it fails.
179 */
180 mdu_param_t param; /* unused */
181
182 if (runstop == -1 && md_get_version(fd) < 9000) {
183 if (ioctl(fd, STOP_MD, 0)) {
184 if (quiet == 0) fprintf(stderr,
185 Name ": stopping device %s "
186 "failed: %s\n",
187 devname, strerror(errno));
188 return 1;
189 }
190 }
191
192 if (md_get_version(fd) < 9000) {
193 fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
194 return 1;
195 }
196 /*
197 if (ioctl(fd, GET_ARRAY_INFO, &array)) {
198 fprintf(stderr, Name ": %s does not appear to be active.\n",
199 devname);
200 return 1;
201 }
202 */
203 if (runstop>0) {
204 if (ioctl(fd, RUN_ARRAY, &param)) {
205 fprintf(stderr, Name ": failed to run array %s: %s\n",
206 devname, strerror(errno));
207 return 1;
208 }
209 if (quiet <= 0)
210 fprintf(stderr, Name ": started %s\n", devname);
211 } else if (runstop < 0){
212 struct map_ent *map = NULL;
213 struct stat stb;
214 struct mdinfo *mdi;
215 int devnum;
216 /* If this is an mdmon managed array, just write 'inactive'
217 * to the array state and let mdmon clear up.
218 */
219 devnum = fd2devnum(fd);
220 mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION);
221 if (mdi &&
222 mdi->array.level > 0 &&
223 is_subarray(mdi->text_version)) {
224 /* This is mdmon managed. */
225 close(fd);
226 if (sysfs_set_str(mdi, NULL,
227 "array_state", "inactive") < 0) {
228 if (quiet == 0)
229 fprintf(stderr, Name
230 ": failed to stop array %s: %s\n",
231 devname, strerror(errno));
232 return 1;
233 }
234
235 /* Give monitor a chance to act */
236 ping_monitor(mdi->text_version);
237
238 fd = open(devname, O_RDONLY);
239 } else if (mdi &&
240 mdi->array.major_version == -1 &&
241 mdi->array.minor_version == -2 &&
242 !is_subarray(mdi->text_version)) {
243 /* container, possibly mdmon-managed.
244 * Make sure mdmon isn't opening it, which
245 * would interfere with the 'stop'
246 */
247 ping_monitor(mdi->sys_name);
248 }
249
250 if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) {
251 if (quiet == 0) {
252 fprintf(stderr, Name
253 ": failed to stop array %s: %s\n",
254 devname, strerror(errno));
255 if (errno == EBUSY)
256 fprintf(stderr, "Perhaps a running "
257 "process, mounted filesystem "
258 "or active volume group?\n");
259 }
260 if (mdi)
261 sysfs_free(mdi);
262 return 1;
263 }
264 /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array
265 * was stopped, so We'll do it here just to be sure. Drop any
266 * partitions as well...
267 */
268 if (fd >= 0)
269 ioctl(fd, BLKRRPART, 0);
270 if (mdi)
271 sysfs_uevent(mdi, "change");
272
273
274 if (devnum != NoMdDev &&
275 (stat("/dev/.udev", &stb) != 0 ||
276 check_env("MDADM_NO_UDEV"))) {
277 struct map_ent *mp = map_by_devnum(&map, devnum);
278 remove_devices(devnum, mp ? mp->path : NULL);
279 }
280
281
282 if (quiet <= 0)
283 fprintf(stderr, Name ": stopped %s\n", devname);
284 if (devnum != NoMdDev) {
285 map_delete(&map, devnum);
286 map_write(map);
287 map_free(map);
288 }
289 }
290 return 0;
291 }
292
293 int Manage_resize(char *devname, int fd, long long size, int raid_disks)
294 {
295 mdu_array_info_t info;
296 if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) {
297 fprintf(stderr, Name ": Cannot get array information for %s: %s\n",
298 devname, strerror(errno));
299 return 1;
300 }
301 if (size >= 0)
302 info.size = size;
303 if (raid_disks > 0)
304 info.raid_disks = raid_disks;
305 if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) {
306 fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n",
307 devname, strerror(errno));
308 return 1;
309 }
310 return 0;
311 }
312
313 int Manage_subdevs(char *devname, int fd,
314 mddev_dev_t devlist, int verbose)
315 {
316 /* do something to each dev.
317 * devmode can be
318 * 'a' - add the device
319 * try HOT_ADD_DISK
320 * If that fails EINVAL, try ADD_NEW_DISK
321 * 'r' - remove the device HOT_REMOVE_DISK
322 * device can be 'faulty' or 'detached' in which case all
323 * matching devices are removed.
324 * 'f' - set the device faulty SET_DISK_FAULTY
325 * device can be 'detached' in which case any device that
326 * is inaccessible will be marked faulty.
327 */
328 mdu_array_info_t array;
329 mdu_disk_info_t disc;
330 unsigned long long array_size;
331 mddev_dev_t dv, next = NULL;
332 struct stat stb;
333 int j, jnext = 0;
334 int tfd;
335 struct supertype *st, *tst;
336 int duuid[4];
337 int ouuid[4];
338 int lfd = -1;
339
340 if (ioctl(fd, GET_ARRAY_INFO, &array)) {
341 fprintf(stderr, Name ": cannot get array info for %s\n",
342 devname);
343 return 1;
344 }
345
346 /* array.size is only 32 bit and may be truncated.
347 * So read from sysfs if possible, and record number of sectors
348 */
349
350 array_size = get_component_size(fd);
351 if (array_size <= 0)
352 array_size = array.size * 2;
353
354 tst = super_by_fd(fd);
355 if (!tst) {
356 fprintf(stderr, Name ": unsupport array - version %d.%d\n",
357 array.major_version, array.minor_version);
358 return 1;
359 }
360
361 for (dv = devlist, j=0 ; dv; dv = next, j = jnext) {
362 unsigned long long ldsize;
363 char dvname[20];
364 char *dnprintable = dv->devname;
365 int err;
366
367 next = dv->next;
368 jnext = 0;
369
370 if (strcmp(dv->devname, "failed")==0 ||
371 strcmp(dv->devname, "faulty")==0) {
372 if (dv->disposition != 'r') {
373 fprintf(stderr, Name ": %s only meaningful "
374 "with -r, not -%c\n",
375 dv->devname, dv->disposition);
376 return 1;
377 }
378 for (; j < array.raid_disks + array.nr_disks ; j++) {
379 disc.number = j;
380 if (ioctl(fd, GET_DISK_INFO, &disc))
381 continue;
382 if (disc.major == 0 && disc.minor == 0)
383 continue;
384 if ((disc.state & 1) == 0) /* faulty */
385 continue;
386 stb.st_rdev = makedev(disc.major, disc.minor);
387 next = dv;
388 jnext = j+1;
389 sprintf(dvname,"%d:%d", disc.major, disc.minor);
390 dnprintable = dvname;
391 break;
392 }
393 if (jnext == 0)
394 continue;
395 } else if (strcmp(dv->devname, "detached") == 0) {
396 if (dv->disposition != 'r' && dv->disposition != 'f') {
397 fprintf(stderr, Name ": %s only meaningful "
398 "with -r of -f, not -%c\n",
399 dv->devname, dv->disposition);
400 return 1;
401 }
402 for (; j < array.raid_disks + array.nr_disks; j++) {
403 int sfd;
404 disc.number = j;
405 if (ioctl(fd, GET_DISK_INFO, &disc))
406 continue;
407 if (disc.major == 0 && disc.minor == 0)
408 continue;
409 sprintf(dvname,"%d:%d", disc.major, disc.minor);
410 sfd = dev_open(dvname, O_RDONLY);
411 if (sfd >= 0) {
412 close(sfd);
413 continue;
414 }
415 if (dv->disposition == 'f' &&
416 (disc.state & 1) == 1) /* already faulty */
417 continue;
418 if (errno != ENXIO)
419 continue;
420 stb.st_rdev = makedev(disc.major, disc.minor);
421 next = dv;
422 jnext = j+1;
423 dnprintable = dvname;
424 break;
425 }
426 if (jnext == 0)
427 continue;
428 } else {
429 j = 0;
430
431 if (stat(dv->devname, &stb)) {
432 fprintf(stderr, Name ": cannot find %s: %s\n",
433 dv->devname, strerror(errno));
434 return 1;
435 }
436 if ((stb.st_mode & S_IFMT) != S_IFBLK) {
437 fprintf(stderr, Name ": %s is not a "
438 "block device.\n",
439 dv->devname);
440 return 1;
441 }
442 }
443 switch(dv->disposition){
444 default:
445 fprintf(stderr, Name ": internal error - devmode[%s]=%d\n",
446 dv->devname, dv->disposition);
447 return 1;
448 case 'a':
449 /* add the device */
450 if (tst->subarray[0]) {
451 fprintf(stderr, Name ": Cannot add disks to a"
452 " \'member\' array, perform this"
453 " operation on the parent container\n");
454 return 1;
455 }
456 /* Make sure it isn't in use (in 2.6 or later) */
457 tfd = open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT);
458 if (tfd < 0) {
459 fprintf(stderr, Name ": Cannot open %s: %s\n",
460 dv->devname, strerror(errno));
461 return 1;
462 }
463 remove_partitions(tfd);
464
465 st = dup_super(tst);
466
467 if (array.not_persistent==0)
468 st->ss->load_super(st, tfd, NULL);
469
470 if (!get_dev_size(tfd, dv->devname, &ldsize)) {
471 close(tfd);
472 return 1;
473 }
474 close(tfd);
475
476
477 if (!tst->ss->external &&
478 array.major_version == 0 &&
479 md_get_version(fd)%100 < 2) {
480 if (ioctl(fd, HOT_ADD_DISK,
481 (unsigned long)stb.st_rdev)==0) {
482 if (verbose >= 0)
483 fprintf(stderr, Name ": hot added %s\n",
484 dv->devname);
485 continue;
486 }
487
488 fprintf(stderr, Name ": hot add failed for %s: %s\n",
489 dv->devname, strerror(errno));
490 return 1;
491 }
492
493 if (array.not_persistent == 0 || tst->ss->external) {
494
495 /* need to find a sample superblock to copy, and
496 * a spare slot to use.
497 * For 'external' array (well, container based),
498 * We can just load the metadata for the array.
499 */
500 if (tst->ss->external) {
501 tst->ss->load_super(tst, fd, NULL);
502 } else for (j = 0; j < tst->max_devs; j++) {
503 char *dev;
504 int dfd;
505 disc.number = j;
506 if (ioctl(fd, GET_DISK_INFO, &disc))
507 continue;
508 if (disc.major==0 && disc.minor==0)
509 continue;
510 if ((disc.state & 4)==0) continue; /* sync */
511 /* Looks like a good device to try */
512 dev = map_dev(disc.major, disc.minor, 1);
513 if (!dev) continue;
514 dfd = dev_open(dev, O_RDONLY);
515 if (dfd < 0) continue;
516 if (tst->ss->load_super(tst, dfd,
517 NULL)) {
518 close(dfd);
519 continue;
520 }
521 close(dfd);
522 break;
523 }
524 /* FIXME this is a bad test to be using */
525 if (!tst->sb) {
526 fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n");
527 return 1;
528 }
529
530 /* Make sure device is large enough */
531 if (tst->ss->avail_size(tst, ldsize/512) <
532 array_size) {
533 fprintf(stderr, Name ": %s not large enough to join array\n",
534 dv->devname);
535 return 1;
536 }
537
538 /* Possibly this device was recently part of the array
539 * and was temporarily removed, and is now being re-added.
540 * If so, we can simply re-add it.
541 */
542 tst->ss->uuid_from_super(tst, duuid);
543
544 /* re-add doesn't work for version-1 superblocks
545 * before 2.6.18 :-(
546 */
547 if (array.major_version == 1 &&
548 get_linux_version() <= 2006018)
549 ;
550 else if (st->sb) {
551 st->ss->uuid_from_super(st, ouuid);
552 if (memcmp(duuid, ouuid, sizeof(ouuid))==0) {
553 /* looks close enough for now. Kernel
554 * will worry about whether a bitmap
555 * based reconstruction is possible.
556 */
557 struct mdinfo mdi;
558 st->ss->getinfo_super(st, &mdi);
559 disc.major = major(stb.st_rdev);
560 disc.minor = minor(stb.st_rdev);
561 disc.number = mdi.disk.number;
562 disc.raid_disk = mdi.disk.raid_disk;
563 disc.state = mdi.disk.state;
564 if (dv->writemostly == 1)
565 disc.state |= 1 << MD_DISK_WRITEMOSTLY;
566 if (dv->writemostly == 2)
567 disc.state &= ~(1 << MD_DISK_WRITEMOSTLY);
568 if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) {
569 if (verbose >= 0)
570 fprintf(stderr, Name ": re-added %s\n", dv->devname);
571 continue;
572 }
573 if (errno == ENOMEM || errno == EROFS) {
574 fprintf(stderr, Name ": add new device failed for %s: %s\n",
575 dv->devname, strerror(errno));
576 return 1;
577 }
578 /* fall back on normal-add */
579 }
580 }
581 } else {
582 /* non-persistent. Must ensure that new drive
583 * is at least array.size big.
584 */
585 if (ldsize/512 < array_size) {
586 fprintf(stderr, Name ": %s not large enough to join array\n",
587 dv->devname);
588 return 1;
589 }
590 }
591 /* in 2.6.17 and earlier, version-1 superblocks won't
592 * use the number we write, but will choose a free number.
593 * we must choose the same free number, which requires
594 * starting at 'raid_disks' and counting up
595 */
596 for (j = array.raid_disks; j< tst->max_devs; j++) {
597 disc.number = j;
598 if (ioctl(fd, GET_DISK_INFO, &disc))
599 break;
600 if (disc.major==0 && disc.minor==0)
601 break;
602 if (disc.state & 8) /* removed */
603 break;
604 }
605 disc.major = major(stb.st_rdev);
606 disc.minor = minor(stb.st_rdev);
607 disc.number =j;
608 disc.state = 0;
609 if (array.not_persistent==0 || tst->ss->external) {
610 int dfd;
611 if (dv->writemostly == 1)
612 disc.state |= 1 << MD_DISK_WRITEMOSTLY;
613 dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT);
614 if (tst->ss->add_to_super(tst, &disc, dfd,
615 dv->devname)) {
616 close(dfd);
617 return 1;
618 }
619 /* write_init_super will close 'dfd' */
620 if (tst->ss->external)
621 /* mdmon will write the metadata */
622 close(dfd);
623 else if (tst->ss->write_init_super(tst))
624 return 1;
625 } else if (dv->re_add) {
626 /* this had better be raid1.
627 * As we are "--re-add"ing we must find a spare slot
628 * to fill.
629 */
630 char *used = malloc(array.raid_disks);
631 memset(used, 0, array.raid_disks);
632 for (j=0; j< tst->max_devs; j++) {
633 mdu_disk_info_t disc2;
634 disc2.number = j;
635 if (ioctl(fd, GET_DISK_INFO, &disc2))
636 continue;
637 if (disc2.major==0 && disc2.minor==0)
638 continue;
639 if (disc2.state & 8) /* removed */
640 continue;
641 if (disc2.raid_disk < 0)
642 continue;
643 if (disc2.raid_disk > array.raid_disks)
644 continue;
645 used[disc2.raid_disk] = 1;
646 }
647 for (j=0 ; j<array.raid_disks; j++)
648 if (!used[j]) {
649 disc.raid_disk = j;
650 disc.state |= (1<<MD_DISK_SYNC);
651 break;
652 }
653 }
654 if (dv->writemostly == 1)
655 disc.state |= (1 << MD_DISK_WRITEMOSTLY);
656 if (tst->ss->external) {
657 /* add a disk to an external metadata container
658 * only if mdmon is around to see it
659 */
660 struct mdinfo new_mdi;
661 struct mdinfo *sra;
662 int container_fd;
663 int devnum = fd2devnum(fd);
664
665 container_fd = open_dev_excl(devnum);
666 if (container_fd < 0) {
667 fprintf(stderr, Name ": add failed for %s:"
668 " could not get exclusive access to container\n",
669 dv->devname);
670 return 1;
671 }
672
673 if (!mdmon_running(devnum)) {
674 fprintf(stderr, Name ": add failed for %s: mdmon not running\n",
675 dv->devname);
676 close(container_fd);
677 return 1;
678 }
679
680 sra = sysfs_read(container_fd, -1, 0);
681 if (!sra) {
682 fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n",
683 dv->devname);
684 close(container_fd);
685 return 1;
686 }
687 sra->array.level = LEVEL_CONTAINER;
688 /* Need to set data_offset and component_size */
689 tst->ss->getinfo_super(tst, &new_mdi);
690 new_mdi.disk.major = disc.major;
691 new_mdi.disk.minor = disc.minor;
692 if (sysfs_add_disk(sra, &new_mdi, 0) != 0) {
693 fprintf(stderr, Name ": add new device to external metadata"
694 " failed for %s\n", dv->devname);
695 close(container_fd);
696 return 1;
697 }
698 ping_monitor(devnum2devname(devnum));
699 sysfs_free(sra);
700 close(container_fd);
701 } else if (ioctl(fd, ADD_NEW_DISK, &disc)) {
702 fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
703 dv->devname, j, strerror(errno));
704 return 1;
705 }
706 if (verbose >= 0)
707 fprintf(stderr, Name ": added %s\n", dv->devname);
708 break;
709
710 case 'r':
711 /* hot remove */
712 if (tst->subarray[0]) {
713 fprintf(stderr, Name ": Cannot remove disks from a"
714 " \'member\' array, perform this"
715 " operation on the parent container\n");
716 return 1;
717 }
718 if (tst->ss->external) {
719 /* To remove a device from a container, we must
720 * check that it isn't in use in an array.
721 * This involves looking in the 'holders'
722 * directory - there must be just one entry,
723 * the container.
724 * To ensure that it doesn't get used as a
725 * hold spare while we are checking, we
726 * get an O_EXCL open on the container
727 */
728 int dnum = fd2devnum(fd);
729 lfd = open_dev_excl(dnum);
730 if (lfd < 0) {
731 fprintf(stderr, Name
732 ": Cannot get exclusive access "
733 " to container - odd\n");
734 return 1;
735 }
736 /* in the detached case it is not possible to
737 * check if we are the unique holder, so just
738 * rely on the 'detached' checks
739 */
740 if (strcmp(dv->devname, "detached") == 0 ||
741 sysfs_unique_holder(dnum, stb.st_rdev))
742 /* pass */;
743 else {
744 fprintf(stderr, Name
745 ": %s is %s, cannot remove.\n",
746 dnprintable,
747 errno == EEXIST ? "still in use":
748 "not a member");
749 close(lfd);
750 return 1;
751 }
752 }
753 /* FIXME check that it is a current member */
754 err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev);
755 if (err && errno == ENODEV) {
756 /* Old kernels rejected this if no personality
757 * registered */
758 struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS);
759 struct mdinfo *dv = NULL;
760 if (sra)
761 dv = sra->devs;
762 for ( ; dv ; dv=dv->next)
763 if (dv->disk.major == major(stb.st_rdev) &&
764 dv->disk.minor == minor(stb.st_rdev))
765 break;
766 if (dv)
767 err = sysfs_set_str(sra, dv,
768 "state", "remove");
769 else
770 err = -1;
771 if (sra)
772 sysfs_free(sra);
773 }
774 if (err) {
775 fprintf(stderr, Name ": hot remove failed "
776 "for %s: %s\n", dnprintable,
777 strerror(errno));
778 if (lfd >= 0)
779 close(lfd);
780 return 1;
781 }
782 if (tst->ss->external) {
783 /*
784 * Before dropping our exclusive open we make an
785 * attempt at preventing mdmon from seeing an
786 * 'add' event before reconciling this 'remove'
787 * event.
788 */
789 char *name = devnum2devname(fd2devnum(fd));
790
791 if (!name) {
792 fprintf(stderr, Name ": unable to get container name\n");
793 return 1;
794 }
795
796 ping_manager(name);
797 free(name);
798 }
799 close(lfd);
800 if (verbose >= 0)
801 fprintf(stderr, Name ": hot removed %s\n",
802 dnprintable);
803 break;
804
805 case 'f': /* set faulty */
806 /* FIXME check current member */
807 if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) {
808 fprintf(stderr, Name ": set device faulty failed for %s: %s\n",
809 dnprintable, strerror(errno));
810 return 1;
811 }
812 if (verbose >= 0)
813 fprintf(stderr, Name ": set %s faulty in %s\n",
814 dnprintable, devname);
815 break;
816 }
817 }
818 return 0;
819
820 }
821
822 int autodetect(void)
823 {
824 /* Open any md device, and issue the RAID_AUTORUN ioctl */
825 int rv = 1;
826 int fd = dev_open("9:0", O_RDONLY);
827 if (fd >= 0) {
828 if (ioctl(fd, RAID_AUTORUN, 0) == 0)
829 rv = 0;
830 close(fd);
831 }
832 return rv;
833 }
834 #endif
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