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[thirdparty/mdadm.git] / Detail.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2013 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_p.h"
27 #include "md_u.h"
28 #include <ctype.h>
29 #include <dirent.h>
30
31 static int cmpstringp(const void *p1, const void *p2)
32 {
33 return strcmp(* (char * const *) p1, * (char * const *) p2);
34 }
35
36 static int add_device(const char *dev, char ***p_devices,
37 int *p_max_devices, int n_devices)
38 {
39 if (n_devices + 1 >= *p_max_devices) {
40 *p_max_devices += 16;
41 *p_devices = xrealloc(*p_devices, *p_max_devices *
42 sizeof(**p_devices));
43 if (!*p_devices) {
44 *p_max_devices = 0;
45 return 0;
46 }
47 };
48 (*p_devices)[n_devices] = xstrdup(dev);
49 return n_devices + 1;
50 }
51
52 int Detail(char *dev, struct context *c)
53 {
54 /*
55 * Print out details for an md array
56 */
57 int fd = open(dev, O_RDONLY);
58 mdu_array_info_t array;
59 mdu_disk_info_t *disks;
60 int next;
61 int d;
62 time_t atime;
63 char *str;
64 char **devices = NULL;
65 int max_devices = 0, n_devices = 0;
66 int spares = 0;
67 struct stat stb;
68 int failed = 0;
69 struct supertype *st;
70 char *subarray = NULL;
71 int max_disks = MD_SB_DISKS; /* just a default */
72 struct mdinfo *info = NULL;
73 struct mdinfo *sra;
74 struct mdinfo *subdev;
75 char *member = NULL;
76 char *container = NULL;
77
78 int rv = c->test ? 4 : 1;
79 int avail_disks = 0;
80 char *avail = NULL;
81 int external;
82 int inactive;
83
84 if (fd < 0) {
85 pr_err("cannot open %s: %s\n",
86 dev, strerror(errno));
87 return rv;
88 }
89 sra = sysfs_read(fd, NULL, GET_VERSION | GET_DEVS | GET_ARRAY_STATE);
90 if (!sra) {
91 pr_err("%s does not appear to be an md device\n", dev);
92 close(fd);
93 return rv;
94 }
95 external = (sra != NULL && sra->array.major_version == -1 &&
96 sra->array.minor_version == -2);
97 inactive = (sra->array_state == ARRAY_ACTIVE ||
98 sra->array_state == ARRAY_CLEAR);
99 st = super_by_fd(fd, &subarray);
100 if (md_get_array_info(fd, &array) && errno == ENODEV) {
101 if (sra->array.major_version == -1 &&
102 sra->array.minor_version == -1 &&
103 sra->devs == NULL) {
104 pr_err("Array associated with md device %s does not exist.\n", dev);
105 close(fd);
106 sysfs_free(sra);
107 return rv;
108 }
109 array = sra->array;
110 } else {
111 pr_err("cannot get array detail for %s: %s\n",
112 dev, strerror(errno));
113 close(fd);
114 return rv;
115 }
116
117 if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
118 stb.st_rdev = 0;
119 rv = 0;
120
121 if (st)
122 max_disks = st->max_devs;
123
124 if (subarray) {
125 /* This is a subarray of some container.
126 * We want the name of the container, and the member
127 */
128 dev_t devid = devnm2devid(st->container_devnm);
129 int cfd, err;
130
131 member = subarray;
132 container = map_dev_preferred(major(devid), minor(devid),
133 1, c->prefer);
134 cfd = open_dev(st->container_devnm);
135 if (cfd >= 0) {
136 err = st->ss->load_container(st, cfd, NULL);
137 close(cfd);
138 if (err == 0)
139 info = st->ss->container_content(st, subarray);
140 }
141 }
142
143 /* try to load a superblock. Try sra->devs first, then try ioctl */
144 if (st && !info)
145 for (d = 0, subdev = sra ? sra->devs : NULL;
146 d < max_disks || subdev;
147 subdev ? (void)(subdev = subdev->next) : (void)(d++)){
148 mdu_disk_info_t disk;
149 char *dv;
150 int fd2;
151 int err;
152
153 if (subdev)
154 disk = subdev->disk;
155 else {
156 disk.number = d;
157 if (md_get_disk_info(fd, &disk) < 0)
158 continue;
159 if (d >= array.raid_disks &&
160 disk.major == 0 && disk.minor == 0)
161 continue;
162 }
163
164 if (array.raid_disks > 0 &&
165 (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
166 continue;
167
168 dv = map_dev(disk.major, disk.minor, 1);
169 if (!dv)
170 continue;
171
172 fd2 = dev_open(dv, O_RDONLY);
173 if (fd2 < 0)
174 continue;
175
176 if (st->sb)
177 st->ss->free_super(st);
178
179 err = st->ss->load_super(st, fd2, NULL);
180 close(fd2);
181 if (err)
182 continue;
183 if (info)
184 free(info);
185 if (subarray)
186 info = st->ss->container_content(st, subarray);
187 else {
188 info = xmalloc(sizeof(*info));
189 st->ss->getinfo_super(st, info, NULL);
190 }
191 if (!info)
192 continue;
193
194 if (array.raid_disks != 0 && /* container */
195 (info->array.ctime != array.ctime ||
196 info->array.level != array.level)) {
197 st->ss->free_super(st);
198 continue;
199 }
200 /* some formats (imsm) have free-floating-spares
201 * with a uuid of uuid_zero, they don't
202 * have very good info about the rest of the
203 * container, so keep searching when
204 * encountering such a device. Otherwise, stop
205 * after the first successful call to
206 * ->load_super.
207 */
208 if (memcmp(uuid_zero,
209 info->uuid,
210 sizeof(uuid_zero)) == 0) {
211 st->ss->free_super(st);
212 continue;
213 }
214 break;
215 }
216
217 /* Ok, we have some info to print... */
218 str = map_num(pers, array.level);
219
220 if (c->export) {
221 if (array.raid_disks) {
222 if (str)
223 printf("MD_LEVEL=%s\n", str);
224 printf("MD_DEVICES=%d\n", array.raid_disks);
225 } else {
226 if (!inactive)
227 printf("MD_LEVEL=container\n");
228 printf("MD_DEVICES=%d\n", array.nr_disks);
229 }
230 if (container) {
231 printf("MD_CONTAINER=%s\n", container);
232 printf("MD_MEMBER=%s\n", member);
233 } else {
234 if (sra && sra->array.major_version < 0)
235 printf("MD_METADATA=%s\n", sra->text_version);
236 else
237 printf("MD_METADATA=%d.%d\n",
238 array.major_version,
239 array.minor_version);
240 }
241
242 if (st && st->sb && info) {
243 char nbuf[64];
244 struct map_ent *mp, *map = NULL;
245
246 fname_from_uuid(st, info, nbuf, ':');
247 printf("MD_UUID=%s\n", nbuf + 5);
248 mp = map_by_uuid(&map, info->uuid);
249 if (mp && mp->path &&
250 strncmp(mp->path, "/dev/md/", 8) == 0) {
251 printf("MD_DEVNAME=");
252 print_escape(mp->path + 8);
253 putchar('\n');
254 }
255
256 if (st->ss->export_detail_super)
257 st->ss->export_detail_super(st);
258 } else {
259 struct map_ent *mp, *map = NULL;
260 char nbuf[64];
261 mp = map_by_devnm(&map, fd2devnm(fd));
262 if (mp) {
263 __fname_from_uuid(mp->uuid, 0, nbuf, ':');
264 printf("MD_UUID=%s\n", nbuf+5);
265 }
266 if (mp && mp->path &&
267 strncmp(mp->path, "/dev/md/", 8) == 0) {
268 printf("MD_DEVNAME=");
269 print_escape(mp->path+8);
270 putchar('\n');
271 }
272 }
273 if (sra) {
274 struct mdinfo *mdi;
275 for (mdi = sra->devs; mdi; mdi = mdi->next) {
276 char *path;
277 char *sysdev = xstrdup(mdi->sys_name + 1);
278 char *cp;
279
280 path = map_dev(mdi->disk.major,
281 mdi->disk.minor, 0);
282 for (cp = sysdev; *cp; cp++)
283 if (!isalnum(*cp))
284 *cp = '_';
285
286 if (mdi->disk.raid_disk >= 0)
287 printf("MD_DEVICE_%s_ROLE=%d\n",
288 sysdev,
289 mdi->disk.raid_disk);
290 else
291 printf("MD_DEVICE_%s_ROLE=spare\n",
292 sysdev);
293 if (path)
294 printf("MD_DEVICE_%s_DEV=%s\n",
295 sysdev, path);
296 }
297 }
298 goto out;
299 }
300
301 disks = xmalloc(max_disks * 2 * sizeof(mdu_disk_info_t));
302 for (d = 0; d < max_disks * 2; d++) {
303 disks[d].state = (1 << MD_DISK_REMOVED);
304 disks[d].major = disks[d].minor = 0;
305 disks[d].number = -1;
306 disks[d].raid_disk = d / 2;
307 }
308
309 next = array.raid_disks * 2;
310 if (inactive) {
311 struct mdinfo *mdi;
312 if (sra != NULL)
313 for (mdi = sra->devs; mdi; mdi = mdi->next) {
314 disks[next++] = mdi->disk;
315 disks[next - 1].number = -1;
316 }
317 } else for (d = 0; d < max_disks; d++) {
318 mdu_disk_info_t disk;
319 disk.number = d;
320 if (md_get_disk_info(fd, &disk) < 0) {
321 if (d < array.raid_disks)
322 pr_err("cannot get device detail for device %d: %s\n",
323 d, strerror(errno));
324 continue;
325 }
326 if (disk.major == 0 && disk.minor == 0)
327 continue;
328 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks &&
329 disks[disk.raid_disk * 2].state == (1 << MD_DISK_REMOVED) &&
330 ((disk.state & (1 << MD_DISK_JOURNAL)) == 0))
331 disks[disk.raid_disk * 2] = disk;
332 else if (disk.raid_disk >= 0 &&
333 disk.raid_disk < array.raid_disks &&
334 disks[disk.raid_disk * 2 + 1].state ==
335 (1 << MD_DISK_REMOVED) &&
336 !(disk.state & (1 << MD_DISK_JOURNAL)))
337 disks[disk.raid_disk * 2 + 1] = disk;
338 else if (next < max_disks * 2)
339 disks[next++] = disk;
340 }
341
342 avail = xcalloc(array.raid_disks, 1);
343
344 for (d = 0; d < array.raid_disks; d++) {
345
346 if ((disks[d*2].state & (1<<MD_DISK_SYNC)) ||
347 (disks[d*2+1].state & (1<<MD_DISK_SYNC))) {
348 avail_disks ++;
349 avail[d] = 1;
350 } else
351 rv |= !! c->test;
352 }
353
354 if (c->brief) {
355 mdu_bitmap_file_t bmf;
356 printf("%sARRAY %s", inactive ? "INACTIVE-":"", dev);
357 if (c->verbose > 0) {
358 if (array.raid_disks)
359 printf(" level=%s num-devices=%d",
360 str ? str : "-unknown-",
361 array.raid_disks);
362 else if (!inactive)
363 printf(" level=container num-devices=%d",
364 array.nr_disks);
365 else
366 printf(" num-devices=%d", array.nr_disks);
367 }
368 if (container) {
369 printf(" container=%s", container);
370 printf(" member=%s", member);
371 } else {
372 if (sra && sra->array.major_version < 0)
373 printf(" metadata=%s", sra->text_version);
374 else
375 printf(" metadata=%d.%d", array.major_version,
376 array.minor_version);
377 }
378
379 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
380 if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && bmf.pathname[0]) {
381 printf(" bitmap=%s", bmf.pathname);
382 }
383 } else {
384 mdu_bitmap_file_t bmf;
385 unsigned long long larray_size;
386 struct mdstat_ent *ms = mdstat_read(0, 0);
387 struct mdstat_ent *e;
388 char *devnm;
389
390 devnm = stat2devnm(&stb);
391 for (e = ms; e; e = e->next)
392 if (strcmp(e->devnm, devnm) == 0)
393 break;
394 if (!get_dev_size(fd, NULL, &larray_size))
395 larray_size = 0;
396
397 printf("%s:\n", dev);
398
399 if (container)
400 printf(" Container : %s, member %s\n",
401 container, member);
402 else {
403 if (sra && sra->array.major_version < 0)
404 printf(" Version : %s\n",
405 sra->text_version);
406 else
407 printf(" Version : %d.%d\n",
408 array.major_version,
409 array.minor_version);
410 }
411
412 atime = array.ctime;
413 if (atime)
414 printf(" Creation Time : %.24s\n", ctime(&atime));
415 if (array.raid_disks == 0 && external)
416 str = "container";
417 if (str)
418 printf(" Raid Level : %s\n", str);
419 if (larray_size)
420 printf(" Array Size : %llu%s\n",
421 (larray_size >> 10),
422 human_size(larray_size));
423 if (array.level >= 1) {
424 if (sra)
425 array.major_version = sra->array.major_version;
426 if (array.major_version != 0 &&
427 (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
428 unsigned long long dsize;
429
430 dsize = get_component_size(fd);
431 if (dsize > 0)
432 printf(" Used Dev Size : %llu%s\n",
433 dsize/2,
434 human_size((long long)dsize<<9));
435 else
436 printf(" Used Dev Size : unknown\n");
437 } else
438 printf(" Used Dev Size : %lu%s\n",
439 (unsigned long)array.size,
440 human_size((unsigned long long)
441 array.size << 10));
442 }
443 if (array.raid_disks)
444 printf(" Raid Devices : %d\n", array.raid_disks);
445 printf(" Total Devices : %d\n", array.nr_disks);
446 if (!container &&
447 ((sra == NULL && array.major_version == 0) ||
448 (sra && sra->array.major_version == 0)))
449 printf(" Preferred Minor : %d\n", array.md_minor);
450 if (sra == NULL || sra->array.major_version >= 0)
451 printf(" Persistence : Superblock is %spersistent\n",
452 array.not_persistent ? "not " : "");
453 printf("\n");
454 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
455 if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && bmf.pathname[0]) {
456 printf(" Intent Bitmap : %s\n", bmf.pathname);
457 printf("\n");
458 } else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
459 printf(" Intent Bitmap : Internal\n\n");
460 atime = array.utime;
461 if (atime)
462 printf(" Update Time : %.24s\n", ctime(&atime));
463 if (array.raid_disks) {
464 static char *sync_action[] = {
465 ", recovering", ", resyncing",
466 ", reshaping", ", checking" };
467 char *st;
468 if (avail_disks == array.raid_disks)
469 st = "";
470 else if (!enough(array.level, array.raid_disks,
471 array.layout, 1, avail))
472 st = ", FAILED";
473 else
474 st = ", degraded";
475
476 printf(" State : %s%s%s%s%s%s \n",
477 (array.state & (1 << MD_SB_CLEAN)) ?
478 "clean" : "active", st,
479 (!e || (e->percent < 0 &&
480 e->percent != RESYNC_PENDING &&
481 e->percent != RESYNC_DELAYED)) ?
482 "" : sync_action[e->resync],
483 larray_size ? "": ", Not Started",
484 (e && e->percent == RESYNC_DELAYED) ?
485 " (DELAYED)": "",
486 (e && e->percent == RESYNC_PENDING) ?
487 " (PENDING)": "");
488 } else if (inactive) {
489 printf(" State : inactive\n");
490 }
491 if (array.raid_disks)
492 printf(" Active Devices : %d\n", array.active_disks);
493 if (array.working_disks > 0)
494 printf(" Working Devices : %d\n",
495 array.working_disks);
496 if (array.raid_disks) {
497 printf(" Failed Devices : %d\n", array.failed_disks);
498 printf(" Spare Devices : %d\n", array.spare_disks);
499 }
500 printf("\n");
501 if (array.level == 5) {
502 str = map_num(r5layout, array.layout);
503 printf(" Layout : %s\n",
504 str ? str : "-unknown-");
505 }
506 if (array.level == 6) {
507 str = map_num(r6layout, array.layout);
508 printf(" Layout : %s\n",
509 str ? str : "-unknown-");
510 }
511 if (array.level == 10) {
512 printf(" Layout :");
513 print_r10_layout(array.layout);
514 printf("\n");
515 }
516 switch (array.level) {
517 case 0:
518 case 4:
519 case 5:
520 case 10:
521 case 6:
522 if (array.chunk_size)
523 printf(" Chunk Size : %dK\n\n",
524 array.chunk_size/1024);
525 break;
526 case -1:
527 printf(" Rounding : %dK\n\n",
528 array.chunk_size/1024);
529 break;
530 default:
531 break;
532 }
533
534 if (array.raid_disks) {
535 struct mdinfo *mdi;
536
537 mdi = sysfs_read(fd, NULL, GET_CONSISTENCY_POLICY);
538 if (mdi) {
539 char *policy = map_num(consistency_policies,
540 mdi->consistency_policy);
541 sysfs_free(mdi);
542 if (policy)
543 printf("Consistency Policy : %s\n\n",
544 policy);
545 }
546 }
547
548 if (e && e->percent >= 0) {
549 static char *sync_action[] = {
550 "Rebuild", "Resync", "Reshape", "Check"};
551 printf(" %7s Status : %d%% complete\n",
552 sync_action[e->resync], e->percent);
553 }
554 free_mdstat(ms);
555
556 if ((st && st->sb) && (info && info->reshape_active)) {
557 #if 0
558 This is pretty boring
559 printf(" Reshape pos'n : %llu%s\n",
560 (unsigned long long) info->reshape_progress << 9,
561 human_size((unsigned long long)
562 info->reshape_progress << 9));
563 #endif
564 if (info->delta_disks != 0)
565 printf(" Delta Devices : %d, (%d->%d)\n",
566 info->delta_disks,
567 array.raid_disks - info->delta_disks,
568 array.raid_disks);
569 if (info->new_level != array.level) {
570 str = map_num(pers, info->new_level);
571 printf(" New Level : %s\n",
572 str ? str : "-unknown-");
573 }
574 if (info->new_level != array.level ||
575 info->new_layout != array.layout) {
576 if (info->new_level == 5) {
577 str = map_num(r5layout,
578 info->new_layout);
579 printf(" New Layout : %s\n",
580 str ? str : "-unknown-");
581 }
582 if (info->new_level == 6) {
583 str = map_num(r6layout,
584 info->new_layout);
585 printf(" New Layout : %s\n",
586 str ? str : "-unknown-");
587 }
588 if (info->new_level == 10) {
589 printf(" New Layout : near=%d, %s=%d\n",
590 info->new_layout & 255,
591 (info->new_layout & 0x10000) ?
592 "offset" : "far",
593 (info->new_layout >> 8) & 255);
594 }
595 }
596 if (info->new_chunk != array.chunk_size)
597 printf(" New Chunksize : %dK\n",
598 info->new_chunk/1024);
599 printf("\n");
600 } else if (e && e->percent >= 0)
601 printf("\n");
602 if (st && st->sb)
603 st->ss->detail_super(st, c->homehost);
604
605 if (array.raid_disks == 0 && sra &&
606 sra->array.major_version == -1 &&
607 sra->array.minor_version == -2 &&
608 sra->text_version[0] != '/') {
609 /* This looks like a container. Find any active arrays
610 * That claim to be a member.
611 */
612 DIR *dir = opendir("/sys/block");
613 struct dirent *de;
614
615 printf(" Member Arrays :");
616
617 while (dir && (de = readdir(dir)) != NULL) {
618 char path[287];
619 char vbuf[1024];
620 int nlen = strlen(sra->sys_name);
621 dev_t devid;
622 if (de->d_name[0] == '.')
623 continue;
624 sprintf(path,
625 "/sys/block/%s/md/metadata_version",
626 de->d_name);
627 if (load_sys(path, vbuf, sizeof(vbuf)) < 0)
628 continue;
629 if (strncmp(vbuf, "external:", 9) ||
630 !is_subarray(vbuf + 9) ||
631 strncmp(vbuf + 10, sra->sys_name, nlen) ||
632 vbuf[10 + nlen] != '/')
633 continue;
634 devid = devnm2devid(de->d_name);
635 printf(" %s",
636 map_dev_preferred(major(devid),
637 minor(devid), 1,
638 c->prefer));
639 }
640 if (dir)
641 closedir(dir);
642 printf("\n\n");
643 }
644
645 if (array.raid_disks)
646 printf(" Number Major Minor RaidDevice State\n");
647 else
648 printf(" Number Major Minor RaidDevice\n");
649 }
650 free(info);
651
652 for (d = 0; d < max_disks * 2; d++) {
653 char *dv;
654 mdu_disk_info_t disk = disks[d];
655
656 if (d >= array.raid_disks * 2 &&
657 disk.major == 0 && disk.minor == 0)
658 continue;
659 if ((d & 1) && disk.major == 0 && disk.minor == 0)
660 continue;
661 if (!c->brief) {
662 if (d == array.raid_disks*2)
663 printf("\n");
664 if (disk.number < 0 && disk.raid_disk < 0)
665 printf(" - %5d %5d - ",
666 disk.major, disk.minor);
667 else if (disk.raid_disk < 0 ||
668 disk.state & (1 << MD_DISK_JOURNAL))
669 printf(" %5d %5d %5d - ",
670 disk.number, disk.major, disk.minor);
671 else if (disk.number < 0)
672 printf(" - %5d %5d %5d ",
673 disk.major, disk.minor, disk.raid_disk);
674 else
675 printf(" %5d %5d %5d %5d ",
676 disk.number, disk.major, disk.minor,
677 disk.raid_disk);
678 }
679 if (!c->brief && array.raid_disks) {
680 if (disk.state & (1 << MD_DISK_FAULTY)) {
681 printf(" faulty");
682 if (disk.raid_disk < array.raid_disks &&
683 disk.raid_disk >= 0)
684 failed++;
685 }
686 if (disk.state & (1 << MD_DISK_ACTIVE))
687 printf(" active");
688 if (disk.state & (1 << MD_DISK_SYNC)) {
689 printf(" sync");
690 if (array.level == 10 &&
691 (array.layout & ~0x1FFFF) == 0) {
692 int nc = array.layout & 0xff;
693 int fc = (array.layout >> 8) & 0xff;
694 int copies = nc*fc;
695 if (fc == 1 &&
696 array.raid_disks % copies == 0 &&
697 copies <= 26) {
698 /* We can divide the devices
699 into 'sets' */
700 int set;
701 set = disk.raid_disk % copies;
702 printf(" set-%c", set + 'A');
703 }
704 }
705 }
706 if (disk.state & (1 << MD_DISK_REMOVED))
707 printf(" removed");
708 if (disk.state & (1 << MD_DISK_WRITEMOSTLY))
709 printf(" writemostly");
710 if (disk.state & (1 << MD_DISK_FAILFAST))
711 printf(" failfast");
712 if (disk.state & (1 << MD_DISK_JOURNAL))
713 printf(" journal");
714 if ((disk.state &
715 ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)
716 |(1<<MD_DISK_REMOVED)|(1<<MD_DISK_FAULTY)|(1<<MD_DISK_JOURNAL)))
717 == 0) {
718 printf(" spare");
719 if (disk.raid_disk < array.raid_disks &&
720 disk.raid_disk >= 0)
721 printf(" rebuilding");
722 }
723 }
724 if (disk.state == 0)
725 spares++;
726 dv = map_dev_preferred(disk.major, disk.minor, 0, c->prefer);
727 if (dv != NULL) {
728 if (c->brief)
729 n_devices = add_device(dv, &devices,
730 &max_devices, n_devices);
731 else
732 printf(" %s", dv);
733 }
734 if (!c->brief)
735 printf("\n");
736 }
737 if (spares && c->brief && array.raid_disks)
738 printf(" spares=%d", spares);
739 if (c->brief && st && st->sb)
740 st->ss->brief_detail_super(st);
741 if (st)
742 st->ss->free_super(st);
743
744 if (c->brief && c->verbose > 0 && devices) {
745 qsort(devices, n_devices, sizeof(*devices), cmpstringp);
746 printf("\n devices=%s", devices[0]);
747 for (d = 1; d < n_devices; d++)
748 printf(",%s", devices[d]);
749 }
750 if (c->brief)
751 printf("\n");
752 if (c->test &&
753 !enough(array.level, array.raid_disks, array.layout, 1, avail))
754 rv = 2;
755
756 free(disks);
757 out:
758 close(fd);
759 free(subarray);
760 free(avail);
761 for (d = 0; d < n_devices; d++)
762 free(devices[d]);
763 free(devices);
764 sysfs_free(sra);
765 return rv;
766 }
767
768 int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path)
769 {
770 /* display platform capabilities for the given metadata format
771 * 'scan' in this context means iterate over all metadata types
772 */
773 int i;
774 int err = 1;
775
776 if (ss && export && ss->export_detail_platform)
777 err = ss->export_detail_platform(verbose, controller_path);
778 else if (ss && ss->detail_platform)
779 err = ss->detail_platform(verbose, 0, controller_path);
780 else if (ss) {
781 if (verbose > 0)
782 pr_err("%s metadata is platform independent\n",
783 ss->name ? : "[no name]");
784 } else if (!scan) {
785 if (verbose > 0)
786 pr_err("specify a metadata type or --scan\n");
787 }
788
789 if (!scan)
790 return err;
791
792 err = 0;
793 for (i = 0; superlist[i]; i++) {
794 struct superswitch *meta = superlist[i];
795
796 if (meta == ss)
797 continue;
798 if (verbose > 0)
799 pr_err("checking metadata %s\n",
800 meta->name ? : "[no name]");
801 if (!meta->detail_platform) {
802 if (verbose > 0)
803 pr_err("%s metadata is platform independent\n",
804 meta->name ? : "[no name]");
805 } else if (export && meta->export_detail_platform) {
806 err |= meta->export_detail_platform(verbose, controller_path);
807 } else
808 err |= meta->detail_platform(verbose, 0, controller_path);
809 }
810
811 return err;
812 }
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