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Generate 'change' uevents when arrays change in non-obvious ways.
[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
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
38 int Manage_ro(char *devname, int fd, int readonly)
39 {
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;
48 #ifndef MDASSEMBLE
49 struct mdinfo *mdi;
50 #endif
51
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 }
56 #ifndef MDASSEMBLE
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 }
98 #endif
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 }
104
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)) {
113 fprintf(stderr, Name ": failed to set writable for %s: %s\n",
114 devname, strerror(errno));
115 return 1;
116 }
117 }
118 return 0;
119 }
120
121 #ifndef MDASSEMBLE
122
123 int Manage_runstop(char *devname, int fd, int runstop, int quiet)
124 {
125 /* Run or stop the array. array must already be configured
126 * required >= 0.90.0
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.
130 */
131 mdu_param_t param; /* unused */
132
133 if (runstop == -1 && md_get_version(fd) < 9000) {
134 if (ioctl(fd, STOP_MD, 0)) {
135 if (quiet == 0) fprintf(stderr,
136 Name ": stopping device %s "
137 "failed: %s\n",
138 devname, strerror(errno));
139 return 1;
140 }
141 }
142
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 }
147 /*
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 }
153 */
154 if (runstop>0) {
155 if (ioctl(fd, RUN_ARRAY, &param)) {
156 fprintf(stderr, Name ": failed to run array %s: %s\n",
157 devname, strerror(errno));
158 return 1;
159 }
160 if (quiet <= 0)
161 fprintf(stderr, Name ": started %s\n", devname);
162 } else if (runstop < 0){
163 struct map_ent *map = NULL;
164 struct stat stb;
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 &&
172 is_subarray(mdi->text_version)) {
173 /* This is mdmon managed. */
174 close(fd);
175 if (sysfs_set_str(mdi, NULL,
176 "array_state", "inactive") < 0) {
177 if (quiet == 0)
178 fprintf(stderr, Name
179 ": failed to stop array %s: %s\n",
180 devname, strerror(errno));
181 return 1;
182 }
183
184 /* Give monitor a chance to act */
185 ping_monitor(mdi->text_version);
186
187 fd = open(devname, O_RDONLY);
188 } else if (mdi &&
189 mdi->array.major_version == -1 &&
190 mdi->array.minor_version == -2 &&
191 !is_subarray(mdi->text_version)) {
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);
197 }
198
199 if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) {
200 if (quiet == 0) {
201 fprintf(stderr, Name
202 ": failed to stop array %s: %s\n",
203 devname, strerror(errno));
204 if (errno == EBUSY)
205 fprintf(stderr, "Perhaps a running "
206 "process, mounted filesystem "
207 "or active volume group?\n");
208 }
209 if (mdi)
210 sysfs_free(mdi);
211 return 1;
212 }
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");
218
219 if (quiet <= 0)
220 fprintf(stderr, Name ": stopped %s\n", devname);
221 if (fd >= 0 && fstat(fd, &stb) == 0) {
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 }
231 }
232 return 0;
233 }
234
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
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 }
272
273 int Manage_subdevs(char *devname, int fd,
274 mddev_dev_t devlist, int verbose)
275 {
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
282 * device can be 'faulty' or 'detached' in which case all
283 * matching devices are removed.
284 * 'f' - set the device faulty SET_DISK_FAULTY
285 * device can be 'detached' in which case any device that
286 * is inaccessible will be marked faulty.
287 */
288 mdu_array_info_t array;
289 mdu_disk_info_t disc;
290 unsigned long long array_size;
291 mddev_dev_t dv, next = NULL;
292 struct stat stb;
293 int j, jnext = 0;
294 int tfd;
295 struct supertype *st, *tst;
296 int duuid[4];
297 int ouuid[4];
298 int lfd = -1;
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 }
305
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
314 tst = super_by_fd(fd);
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
321 for (dv = devlist, j=0 ; dv; dv = next, j = jnext) {
322 unsigned long long ldsize;
323 char dvname[20];
324 char *dnprintable = dv->devname;
325 int err;
326
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 }
402 }
403 switch(dv->disposition){
404 default:
405 fprintf(stderr, Name ": internal error - devmode[%s]=%d\n",
406 dv->devname, dv->disposition);
407 return 1;
408 case 'a':
409 /* add the device */
410 if (tst->subarray[0]) {
411 fprintf(stderr, Name ": Cannot add disks to a"
412 " \'member\' array, perform this"
413 " operation on the parent container\n");
414 return 1;
415 }
416 /* Make sure it isn't in use (in 2.6 or later) */
417 tfd = open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT);
418 if (tfd < 0) {
419 fprintf(stderr, Name ": Cannot open %s: %s\n",
420 dv->devname, strerror(errno));
421 return 1;
422 }
423 remove_partitions(tfd);
424
425 st = dup_super(tst);
426
427 if (array.not_persistent==0)
428 st->ss->load_super(st, tfd, NULL);
429
430 if (!get_dev_size(tfd, dv->devname, &ldsize)) {
431 close(tfd);
432 return 1;
433 }
434 close(tfd);
435
436
437 if (!tst->ss->external &&
438 array.major_version == 0 &&
439 md_get_version(fd)%100 < 2) {
440 if (ioctl(fd, HOT_ADD_DISK,
441 (unsigned long)stb.st_rdev)==0) {
442 if (verbose >= 0)
443 fprintf(stderr, Name ": hot added %s\n",
444 dv->devname);
445 continue;
446 }
447
448 fprintf(stderr, Name ": hot add failed for %s: %s\n",
449 dv->devname, strerror(errno));
450 return 1;
451 }
452
453 if (array.not_persistent == 0 || tst->ss->external) {
454
455 /* need to find a sample superblock to copy, and
456 * a spare slot to use.
457 * For 'external' array (well, container based),
458 * We can just load the metadata for the array.
459 */
460 if (tst->ss->external) {
461 tst->ss->load_super(tst, fd, NULL);
462 } else for (j = 0; j < tst->max_devs; j++) {
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 */
472 dev = map_dev(disc.major, disc.minor, 1);
473 if (!dev) continue;
474 dfd = dev_open(dev, O_RDONLY);
475 if (dfd < 0) continue;
476 if (tst->ss->load_super(tst, dfd,
477 NULL)) {
478 close(dfd);
479 continue;
480 }
481 close(dfd);
482 break;
483 }
484 /* FIXME this is a bad test to be using */
485 if (!tst->sb) {
486 fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n");
487 return 1;
488 }
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
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 */
502 tst->ss->uuid_from_super(tst, duuid);
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 ;
510 else if (st->sb) {
511 st->ss->uuid_from_super(st, ouuid);
512 if (memcmp(duuid, ouuid, sizeof(ouuid))==0) {
513 /* looks close enough for now. Kernel
514 * will worry about whether a bitmap
515 * based reconstruction is possible.
516 */
517 struct mdinfo mdi;
518 st->ss->getinfo_super(st, &mdi);
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;
524 if (dv->writemostly == 1)
525 disc.state |= 1 << MD_DISK_WRITEMOSTLY;
526 if (dv->writemostly == 2)
527 disc.state &= ~(1 << MD_DISK_WRITEMOSTLY);
528 if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) {
529 if (verbose >= 0)
530 fprintf(stderr, Name ": re-added %s\n", dv->devname);
531 continue;
532 }
533 /* fall back on normal-add */
534 }
535 }
536 } else {
537 /* non-persistent. Must ensure that new drive
538 * is at least array.size big.
539 */
540 if (ldsize/512 < array_size) {
541 fprintf(stderr, Name ": %s not large enough to join array\n",
542 dv->devname);
543 return 1;
544 }
545 }
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 */
551 for (j = array.raid_disks; j< tst->max_devs; j++) {
552 disc.number = j;
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 }
560 disc.major = major(stb.st_rdev);
561 disc.minor = minor(stb.st_rdev);
562 disc.number =j;
563 disc.state = 0;
564 if (array.not_persistent==0 || tst->ss->external) {
565 int dfd;
566 if (dv->writemostly == 1)
567 disc.state |= 1 << MD_DISK_WRITEMOSTLY;
568 dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT);
569 tst->ss->add_to_super(tst, &disc, dfd,
570 dv->devname);
571 /* write_init_super will close 'dfd' */
572 if (tst->ss->external)
573 /* mdmon will write the metadata */
574 close(dfd);
575 else if (tst->ss->write_init_super(tst))
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);
584 for (j=0; j< tst->max_devs; j++) {
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 }
606 if (dv->writemostly == 1)
607 disc.state |= (1 << MD_DISK_WRITEMOSTLY);
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)) {
654 fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
655 dv->devname, j, strerror(errno));
656 return 1;
657 }
658 if (verbose >= 0)
659 fprintf(stderr, Name ": added %s\n", dv->devname);
660 break;
661
662 case 'r':
663 /* hot remove */
664 if (tst->subarray[0]) {
665 fprintf(stderr, Name ": Cannot remove disks from a"
666 " \'member\' array, perform this"
667 " operation on the parent container\n");
668 return 1;
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 }
698 /* FIXME check that it is a current member */
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) {
720 fprintf(stderr, Name ": hot remove failed "
721 "for %s: %s\n", dnprintable,
722 strerror(errno));
723 if (lfd >= 0)
724 close(lfd);
725 return 1;
726 }
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 }
744 close(lfd);
745 if (verbose >= 0)
746 fprintf(stderr, Name ": hot removed %s\n",
747 dnprintable);
748 break;
749
750 case 'f': /* set faulty */
751 /* FIXME check current member */
752 if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) {
753 fprintf(stderr, Name ": set device faulty failed for %s: %s\n",
754 dnprintable, strerror(errno));
755 return 1;
756 }
757 if (verbose >= 0)
758 fprintf(stderr, Name ": set %s faulty in %s\n",
759 dnprintable, devname);
760 break;
761 }
762 }
763 return 0;
764
765 }
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 }
779 #endif
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