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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 = NULL;
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 int is_container = 0;
84 char *arrayst;
85
86 if (fd < 0) {
87 pr_err("cannot open %s: %s\n",
88 dev, strerror(errno));
89 return rv;
90 }
91 sra = sysfs_read(fd, NULL, GET_VERSION | GET_DEVS |
92 GET_ARRAY_STATE | GET_STATE);
93 if (!sra) {
94 if (md_get_array_info(fd, &array)) {
95 pr_err("%s does not appear to be an md device\n", dev);
96 close(fd);
97 return rv;
98 }
99 }
100 external = (sra != NULL && sra->array.major_version == -1 &&
101 sra->array.minor_version == -2);
102 inactive = (sra != NULL && !md_array_is_active(sra));
103 st = super_by_fd(fd, &subarray);
104 if (md_get_array_info(fd, &array)) {
105 if (errno == ENODEV) {
106 if (sra->array.major_version == -1 &&
107 sra->array.minor_version == -1 &&
108 sra->devs == NULL) {
109 pr_err("Array associated with md device %s does not exist.\n",
110 dev);
111 close(fd);
112 sysfs_free(sra);
113 return rv;
114 }
115 array = sra->array;
116 } else {
117 pr_err("cannot get array detail for %s: %s\n",
118 dev, strerror(errno));
119 close(fd);
120 return rv;
121 }
122 }
123
124 if (array.raid_disks == 0 && external)
125 is_container = 1;
126 if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
127 stb.st_rdev = 0;
128 rv = 0;
129
130 if (st)
131 max_disks = st->max_devs;
132
133 if (subarray) {
134 /* This is a subarray of some container.
135 * We want the name of the container, and the member
136 */
137 dev_t devid = devnm2devid(st->container_devnm);
138 int cfd, err;
139
140 member = subarray;
141 container = map_dev_preferred(major(devid), minor(devid),
142 1, c->prefer);
143 cfd = open_dev(st->container_devnm);
144 if (cfd >= 0) {
145 err = st->ss->load_container(st, cfd, NULL);
146 close(cfd);
147 if (err == 0)
148 info = st->ss->container_content(st, subarray);
149 }
150 }
151
152 /* try to load a superblock. Try sra->devs first, then try ioctl */
153 if (st && !info)
154 for (d = 0, subdev = sra ? sra->devs : NULL;
155 d < max_disks || subdev;
156 subdev ? (void)(subdev = subdev->next) : (void)(d++)){
157 mdu_disk_info_t disk;
158 char *dv;
159 int fd2;
160 int err;
161
162 if (subdev)
163 disk = subdev->disk;
164 else {
165 disk.number = d;
166 if (md_get_disk_info(fd, &disk) < 0)
167 continue;
168 if (d >= array.raid_disks &&
169 disk.major == 0 && disk.minor == 0)
170 continue;
171 }
172
173 if (array.raid_disks > 0 &&
174 (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
175 continue;
176
177 dv = map_dev(disk.major, disk.minor, 1);
178 if (!dv)
179 continue;
180
181 fd2 = dev_open(dv, O_RDONLY);
182 if (fd2 < 0)
183 continue;
184
185 if (st->sb)
186 st->ss->free_super(st);
187
188 err = st->ss->load_super(st, fd2, NULL);
189 close(fd2);
190 if (err)
191 continue;
192 if (info)
193 free(info);
194 if (subarray)
195 info = st->ss->container_content(st, subarray);
196 else {
197 info = xmalloc(sizeof(*info));
198 st->ss->getinfo_super(st, info, NULL);
199 }
200 if (!info)
201 continue;
202
203 if (array.raid_disks != 0 && /* container */
204 (info->array.ctime != array.ctime ||
205 info->array.level != array.level)) {
206 st->ss->free_super(st);
207 continue;
208 }
209 /* some formats (imsm) have free-floating-spares
210 * with a uuid of uuid_zero, they don't
211 * have very good info about the rest of the
212 * container, so keep searching when
213 * encountering such a device. Otherwise, stop
214 * after the first successful call to
215 * ->load_super.
216 */
217 if (memcmp(uuid_zero,
218 info->uuid,
219 sizeof(uuid_zero)) == 0) {
220 st->ss->free_super(st);
221 continue;
222 }
223 break;
224 }
225
226 /* Ok, we have some info to print... */
227 if (inactive)
228 str = map_num(pers, info->array.level);
229 else
230 str = map_num(pers, array.level);
231
232 if (c->export) {
233 if (array.raid_disks) {
234 if (str)
235 printf("MD_LEVEL=%s\n", str);
236 printf("MD_DEVICES=%d\n", array.raid_disks);
237 } else {
238 if (is_container)
239 printf("MD_LEVEL=container\n");
240 printf("MD_DEVICES=%d\n", array.nr_disks);
241 }
242 if (container) {
243 printf("MD_CONTAINER=%s\n", container);
244 printf("MD_MEMBER=%s\n", member);
245 } else {
246 if (sra && sra->array.major_version < 0)
247 printf("MD_METADATA=%s\n", sra->text_version);
248 else
249 printf("MD_METADATA=%d.%d\n",
250 array.major_version,
251 array.minor_version);
252 }
253
254 if (st && st->sb && info) {
255 char nbuf[64];
256 struct map_ent *mp, *map = NULL;
257
258 fname_from_uuid(st, info, nbuf, ':');
259 printf("MD_UUID=%s\n", nbuf + 5);
260 mp = map_by_uuid(&map, info->uuid);
261 if (mp && mp->path &&
262 strncmp(mp->path, "/dev/md/", 8) == 0) {
263 printf("MD_DEVNAME=");
264 print_escape(mp->path + 8);
265 putchar('\n');
266 }
267
268 if (st->ss->export_detail_super)
269 st->ss->export_detail_super(st);
270 map_free(map);
271 } else {
272 struct map_ent *mp, *map = NULL;
273 char nbuf[64];
274 mp = map_by_devnm(&map, fd2devnm(fd));
275 if (mp) {
276 __fname_from_uuid(mp->uuid, 0, nbuf, ':');
277 printf("MD_UUID=%s\n", nbuf+5);
278 }
279 if (mp && mp->path &&
280 strncmp(mp->path, "/dev/md/", 8) == 0) {
281 printf("MD_DEVNAME=");
282 print_escape(mp->path+8);
283 putchar('\n');
284 }
285 map_free(map);
286 }
287 if (!c->no_devices && sra) {
288 struct mdinfo *mdi;
289 for (mdi = sra->devs; mdi; mdi = mdi->next) {
290 char *path;
291 char *sysdev = xstrdup(mdi->sys_name);
292 char *cp;
293
294 path = map_dev(mdi->disk.major,
295 mdi->disk.minor, 0);
296 for (cp = sysdev; *cp; cp++)
297 if (!isalnum(*cp))
298 *cp = '_';
299
300 if (mdi->disk.raid_disk >= 0)
301 printf("MD_DEVICE_%s_ROLE=%d\n",
302 sysdev,
303 mdi->disk.raid_disk);
304 else
305 printf("MD_DEVICE_%s_ROLE=spare\n",
306 sysdev);
307 if (path)
308 printf("MD_DEVICE_%s_DEV=%s\n",
309 sysdev, path);
310 }
311 }
312 goto out;
313 }
314
315 disks = xmalloc(max_disks * 2 * sizeof(mdu_disk_info_t));
316 for (d = 0; d < max_disks * 2; d++) {
317 disks[d].state = (1 << MD_DISK_REMOVED);
318 disks[d].major = disks[d].minor = 0;
319 disks[d].number = -1;
320 disks[d].raid_disk = d / 2;
321 }
322
323 next = array.raid_disks * 2;
324 if (inactive) {
325 struct mdinfo *mdi;
326 for (mdi = sra->devs; mdi; mdi = mdi->next) {
327 disks[next++] = mdi->disk;
328 disks[next - 1].number = -1;
329 }
330 } else for (d = 0; d < max_disks; d++) {
331 mdu_disk_info_t disk;
332 disk.number = d;
333 if (md_get_disk_info(fd, &disk) < 0) {
334 if (d < array.raid_disks)
335 pr_err("cannot get device detail for device %d: %s\n",
336 d, strerror(errno));
337 continue;
338 }
339 if (disk.major == 0 && disk.minor == 0)
340 continue;
341 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks &&
342 disks[disk.raid_disk * 2].state == (1 << MD_DISK_REMOVED) &&
343 ((disk.state & (1 << MD_DISK_JOURNAL)) == 0))
344 disks[disk.raid_disk * 2] = disk;
345 else if (disk.raid_disk >= 0 &&
346 disk.raid_disk < array.raid_disks &&
347 disks[disk.raid_disk * 2 + 1].state ==
348 (1 << MD_DISK_REMOVED) &&
349 !(disk.state & (1 << MD_DISK_JOURNAL)))
350 disks[disk.raid_disk * 2 + 1] = disk;
351 else if (next < max_disks * 2)
352 disks[next++] = disk;
353 }
354
355 avail = xcalloc(array.raid_disks, 1);
356
357 for (d = 0; d < array.raid_disks; d++) {
358
359 if ((disks[d*2].state & (1<<MD_DISK_SYNC)) ||
360 (disks[d*2+1].state & (1<<MD_DISK_SYNC))) {
361 avail_disks ++;
362 avail[d] = 1;
363 } else
364 rv |= !! c->test;
365 }
366
367 if (c->brief) {
368 mdu_bitmap_file_t bmf;
369 if (inactive && !is_container)
370 printf("INACTIVE-ARRAY %s", dev);
371 else
372 printf("ARRAY %s", dev);
373 if (c->verbose > 0) {
374 if (array.raid_disks)
375 printf(" level=%s num-devices=%d",
376 str ? str : "-unknown-",
377 array.raid_disks);
378 else if (is_container)
379 printf(" level=container num-devices=%d",
380 array.nr_disks);
381 else
382 printf(" num-devices=%d", array.nr_disks);
383 }
384 if (container) {
385 printf(" container=%s", container);
386 printf(" member=%s", member);
387 } else {
388 if (sra && sra->array.major_version < 0)
389 printf(" metadata=%s", sra->text_version);
390 else
391 printf(" metadata=%d.%d", array.major_version,
392 array.minor_version);
393 }
394
395 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
396 if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && bmf.pathname[0]) {
397 printf(" bitmap=%s", bmf.pathname);
398 }
399 } else {
400 mdu_bitmap_file_t bmf;
401 unsigned long long larray_size;
402 struct mdstat_ent *ms = mdstat_read(0, 0);
403 struct mdstat_ent *e;
404 char *devnm;
405
406 devnm = stat2devnm(&stb);
407 for (e = ms; e; e = e->next)
408 if (strcmp(e->devnm, devnm) == 0)
409 break;
410 if (!get_dev_size(fd, NULL, &larray_size))
411 larray_size = 0;
412
413 printf("%s:\n", dev);
414
415 if (container)
416 printf(" Container : %s, member %s\n",
417 container, member);
418 else {
419 if (sra && sra->array.major_version < 0)
420 printf(" Version : %s\n",
421 sra->text_version);
422 else
423 printf(" Version : %d.%d\n",
424 array.major_version,
425 array.minor_version);
426 }
427
428 atime = array.ctime;
429 if (atime)
430 printf(" Creation Time : %.24s\n", ctime(&atime));
431 if (is_container)
432 str = "container";
433 if (str)
434 printf(" Raid Level : %s\n", str);
435 if (larray_size)
436 printf(" Array Size : %llu%s\n",
437 (larray_size >> 10),
438 human_size(larray_size));
439 if (array.level >= 1) {
440 if (sra)
441 array.major_version = sra->array.major_version;
442 if (array.major_version != 0 &&
443 (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
444 unsigned long long dsize;
445
446 dsize = get_component_size(fd);
447 if (dsize > 0)
448 printf(" Used Dev Size : %llu%s\n",
449 dsize/2,
450 human_size((long long)dsize<<9));
451 else
452 printf(" Used Dev Size : unknown\n");
453 } else
454 printf(" Used Dev Size : %lu%s\n",
455 (unsigned long)array.size,
456 human_size((unsigned long long)
457 array.size << 10));
458 }
459 if (array.raid_disks)
460 printf(" Raid Devices : %d\n", array.raid_disks);
461 printf(" Total Devices : %d\n", array.nr_disks);
462 if (!container &&
463 ((sra == NULL && array.major_version == 0) ||
464 (sra && sra->array.major_version == 0)))
465 printf(" Preferred Minor : %d\n", array.md_minor);
466 if (sra == NULL || sra->array.major_version >= 0)
467 printf(" Persistence : Superblock is %spersistent\n",
468 array.not_persistent ? "not " : "");
469 printf("\n");
470 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
471 if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && bmf.pathname[0]) {
472 printf(" Intent Bitmap : %s\n", bmf.pathname);
473 printf("\n");
474 } else if (array.state & (1<<MD_SB_CLUSTERED))
475 printf(" Intent Bitmap : Internal(Clustered)\n\n");
476 else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
477 printf(" Intent Bitmap : Internal\n\n");
478 atime = array.utime;
479 if (atime)
480 printf(" Update Time : %.24s\n", ctime(&atime));
481 if (array.raid_disks) {
482 static char *sync_action[] = {
483 ", recovering", ", resyncing",
484 ", reshaping", ", checking" };
485 char *st;
486 if (avail_disks == array.raid_disks)
487 st = "";
488 else if (!enough(array.level, array.raid_disks,
489 array.layout, 1, avail))
490 st = ", FAILED";
491 else
492 st = ", degraded";
493
494 if (array.state & (1 << MD_SB_CLEAN)) {
495 if ((array.level == 0) ||
496 (array.level == LEVEL_LINEAR))
497 arrayst = map_num(sysfs_array_states,
498 sra->array_state);
499 else
500 arrayst = "clean";
501 } else
502 arrayst = "active";
503
504 printf(" State : %s%s%s%s%s%s%s \n",
505 arrayst, st,
506 (!e || (e->percent < 0 &&
507 e->percent != RESYNC_PENDING &&
508 e->percent != RESYNC_DELAYED &&
509 e->percent != RESYNC_REMOTE)) ?
510 "" : sync_action[e->resync],
511 larray_size ? "": ", Not Started",
512 (e && e->percent == RESYNC_DELAYED) ?
513 " (DELAYED)": "",
514 (e && e->percent == RESYNC_PENDING) ?
515 " (PENDING)": "",
516 (e && e->percent == RESYNC_REMOTE) ?
517 " (REMOTE)": "");
518 } else if (inactive && !is_container) {
519 printf(" State : inactive\n");
520 }
521 if (array.raid_disks)
522 printf(" Active Devices : %d\n", array.active_disks);
523 if (array.working_disks > 0)
524 printf(" Working Devices : %d\n",
525 array.working_disks);
526 if (array.raid_disks) {
527 printf(" Failed Devices : %d\n", array.failed_disks);
528 printf(" Spare Devices : %d\n", array.spare_disks);
529 }
530 printf("\n");
531 if (array.level == 5) {
532 str = map_num(r5layout, array.layout);
533 printf(" Layout : %s\n",
534 str ? str : "-unknown-");
535 }
536 if (array.level == 0 && array.layout) {
537 str = map_num(r0layout, array.layout);
538 printf(" Layout : %s\n",
539 str ? str : "-unknown-");
540 }
541 if (array.level == 6) {
542 str = map_num(r6layout, array.layout);
543 printf(" Layout : %s\n",
544 str ? str : "-unknown-");
545 }
546 if (array.level == 10) {
547 printf(" Layout :");
548 print_r10_layout(array.layout);
549 printf("\n");
550 }
551 switch (array.level) {
552 case 0:
553 case 4:
554 case 5:
555 case 10:
556 case 6:
557 if (array.chunk_size)
558 printf(" Chunk Size : %dK\n\n",
559 array.chunk_size/1024);
560 break;
561 case -1:
562 printf(" Rounding : %dK\n\n",
563 array.chunk_size/1024);
564 break;
565 default:
566 break;
567 }
568
569 if (array.raid_disks) {
570 struct mdinfo *mdi;
571
572 mdi = sysfs_read(fd, NULL, GET_CONSISTENCY_POLICY);
573 if (mdi) {
574 char *policy = map_num(consistency_policies,
575 mdi->consistency_policy);
576 sysfs_free(mdi);
577 if (policy)
578 printf("Consistency Policy : %s\n\n",
579 policy);
580 }
581 }
582
583 if (e && e->percent >= 0) {
584 static char *sync_action[] = {
585 "Rebuild", "Resync", "Reshape", "Check"};
586 printf(" %7s Status : %d%% complete\n",
587 sync_action[e->resync], e->percent);
588 }
589
590 if ((st && st->sb) && (info && info->reshape_active)) {
591 #if 0
592 This is pretty boring
593 printf(" Reshape pos'n : %llu%s\n",
594 (unsigned long long) info->reshape_progress << 9,
595 human_size((unsigned long long)
596 info->reshape_progress << 9));
597 #endif
598 if (info->delta_disks != 0)
599 printf(" Delta Devices : %d, (%d->%d)\n",
600 info->delta_disks,
601 array.raid_disks - info->delta_disks,
602 array.raid_disks);
603 if (info->new_level != array.level) {
604 str = map_num(pers, info->new_level);
605 printf(" New Level : %s\n",
606 str ? str : "-unknown-");
607 }
608 if (info->new_level != array.level ||
609 info->new_layout != array.layout) {
610 if (info->new_level == 5) {
611 str = map_num(r5layout,
612 info->new_layout);
613 printf(" New Layout : %s\n",
614 str ? str : "-unknown-");
615 }
616 if (info->new_level == 6) {
617 str = map_num(r6layout,
618 info->new_layout);
619 printf(" New Layout : %s\n",
620 str ? str : "-unknown-");
621 }
622 if (info->new_level == 10) {
623 printf(" New Layout : near=%d, %s=%d\n",
624 info->new_layout & 255,
625 (info->new_layout & 0x10000) ?
626 "offset" : "far",
627 (info->new_layout >> 8) & 255);
628 }
629 }
630 if (info->new_chunk != array.chunk_size)
631 printf(" New Chunksize : %dK\n",
632 info->new_chunk/1024);
633 printf("\n");
634 } else if (e && e->percent >= 0)
635 printf("\n");
636 free_mdstat(ms);
637
638 if (st && st->sb)
639 st->ss->detail_super(st, c->homehost, subarray);
640
641 if (array.raid_disks == 0 && sra &&
642 sra->array.major_version == -1 &&
643 sra->array.minor_version == -2 &&
644 sra->text_version[0] != '/') {
645 /* This looks like a container. Find any active arrays
646 * That claim to be a member.
647 */
648 DIR *dir = opendir("/sys/block");
649 struct dirent *de;
650
651 printf(" Member Arrays :");
652
653 while (dir && (de = readdir(dir)) != NULL) {
654 char path[287];
655 char vbuf[1024];
656 int nlen = strlen(sra->sys_name);
657 dev_t devid;
658 if (de->d_name[0] == '.')
659 continue;
660 sprintf(path,
661 "/sys/block/%s/md/metadata_version",
662 de->d_name);
663 if (load_sys(path, vbuf, sizeof(vbuf)) < 0)
664 continue;
665 if (strncmp(vbuf, "external:", 9) ||
666 !is_subarray(vbuf + 9) ||
667 strncmp(vbuf + 10, sra->sys_name, nlen) ||
668 vbuf[10 + nlen] != '/')
669 continue;
670 devid = devnm2devid(de->d_name);
671 printf(" %s",
672 map_dev_preferred(major(devid),
673 minor(devid), 1,
674 c->prefer));
675 }
676 if (dir)
677 closedir(dir);
678 printf("\n\n");
679 }
680
681 if (!c->no_devices) {
682 if (array.raid_disks)
683 printf(" Number Major Minor RaidDevice State\n");
684 else
685 printf(" Number Major Minor RaidDevice\n");
686 }
687 }
688
689 /* if --no_devices specified, not print component devices info */
690 if (c->no_devices)
691 goto skip_devices_state;
692
693 for (d = 0; d < max_disks * 2; d++) {
694 char *dv;
695 mdu_disk_info_t disk = disks[d];
696
697 if (d >= array.raid_disks * 2 &&
698 disk.major == 0 && disk.minor == 0)
699 continue;
700 if ((d & 1) && disk.major == 0 && disk.minor == 0)
701 continue;
702 if (!c->brief) {
703 if (d == array.raid_disks*2)
704 printf("\n");
705 if (disk.number < 0 && disk.raid_disk < 0)
706 printf(" - %5d %5d - ",
707 disk.major, disk.minor);
708 else if (disk.raid_disk < 0 ||
709 disk.state & (1 << MD_DISK_JOURNAL))
710 printf(" %5d %5d %5d - ",
711 disk.number, disk.major, disk.minor);
712 else if (disk.number < 0)
713 printf(" - %5d %5d %5d ",
714 disk.major, disk.minor, disk.raid_disk);
715 else
716 printf(" %5d %5d %5d %5d ",
717 disk.number, disk.major, disk.minor,
718 disk.raid_disk);
719 }
720 if (!c->brief && array.raid_disks) {
721 if (disk.state & (1 << MD_DISK_FAULTY)) {
722 printf(" faulty");
723 if (disk.raid_disk < array.raid_disks &&
724 disk.raid_disk >= 0)
725 failed++;
726 }
727 if (disk.state & (1 << MD_DISK_ACTIVE))
728 printf(" active");
729 if (disk.state & (1 << MD_DISK_SYNC)) {
730 printf(" sync");
731 if (array.level == 10 &&
732 (array.layout & ~0x1FFFF) == 0) {
733 int nc = array.layout & 0xff;
734 int fc = (array.layout >> 8) & 0xff;
735 int copies = nc*fc;
736 if (fc == 1 &&
737 array.raid_disks % copies == 0 &&
738 copies <= 26) {
739 /* We can divide the devices
740 into 'sets' */
741 int set;
742 set = disk.raid_disk % copies;
743 printf(" set-%c", set + 'A');
744 }
745 }
746 }
747 if (disk.state & (1 << MD_DISK_REMOVED))
748 printf(" removed");
749 if (disk.state & (1 << MD_DISK_WRITEMOSTLY))
750 printf(" writemostly");
751 if (disk.state & (1 << MD_DISK_FAILFAST))
752 printf(" failfast");
753 if (disk.state & (1 << MD_DISK_JOURNAL))
754 printf(" journal");
755 if ((disk.state &
756 ((1 << MD_DISK_ACTIVE) | (1 << MD_DISK_SYNC) |
757 (1 << MD_DISK_REMOVED) | (1 << MD_DISK_FAULTY) |
758 (1 << MD_DISK_JOURNAL))) == 0) {
759 printf(" spare");
760 if (disk.raid_disk < array.raid_disks &&
761 disk.raid_disk >= 0)
762 printf(" rebuilding");
763 }
764 }
765 if (disk.state == 0)
766 spares++;
767 dv = map_dev_preferred(disk.major, disk.minor, 0, c->prefer);
768 if (dv != NULL) {
769 if (c->brief)
770 n_devices = add_device(dv, &devices,
771 &max_devices, n_devices);
772 else
773 printf(" %s", dv);
774 }
775 if (!c->brief)
776 printf("\n");
777 }
778
779 skip_devices_state:
780 if (spares && c->brief && array.raid_disks)
781 printf(" spares=%d", spares);
782 if (c->brief && st && st->sb)
783 st->ss->brief_detail_super(st, subarray);
784 if (st)
785 st->ss->free_super(st);
786
787 if (c->brief && c->verbose > 0 && devices) {
788 qsort(devices, n_devices, sizeof(*devices), cmpstringp);
789 printf("\n devices=%s", devices[0]);
790 for (d = 1; d < n_devices; d++)
791 printf(",%s", devices[d]);
792 }
793 if (c->brief)
794 printf("\n");
795 if (c->test &&
796 !enough(array.level, array.raid_disks, array.layout, 1, avail))
797 rv = 2;
798
799 out:
800 free(info);
801 free(disks);
802 close(fd);
803 free(subarray);
804 free(avail);
805 for (d = 0; d < n_devices; d++)
806 free(devices[d]);
807 free(devices);
808 sysfs_free(sra);
809 return rv;
810 }
811
812 int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path)
813 {
814 /* display platform capabilities for the given metadata format
815 * 'scan' in this context means iterate over all metadata types
816 */
817 int i;
818 int err = 1;
819
820 if (ss && export && ss->export_detail_platform)
821 err = ss->export_detail_platform(verbose, controller_path);
822 else if (ss && ss->detail_platform)
823 err = ss->detail_platform(verbose, 0, controller_path);
824 else if (ss) {
825 if (verbose > 0)
826 pr_err("%s metadata is platform independent\n",
827 ss->name ? : "[no name]");
828 } else if (!scan) {
829 if (verbose > 0)
830 pr_err("specify a metadata type or --scan\n");
831 }
832
833 if (!scan)
834 return err;
835
836 err = 0;
837 for (i = 0; superlist[i]; i++) {
838 struct superswitch *meta = superlist[i];
839
840 if (meta == ss)
841 continue;
842 if (verbose > 0)
843 pr_err("checking metadata %s\n",
844 meta->name ? : "[no name]");
845 if (!meta->detail_platform) {
846 if (verbose > 0)
847 pr_err("%s metadata is platform independent\n",
848 meta->name ? : "[no name]");
849 } else if (export && meta->export_detail_platform) {
850 err |= meta->export_detail_platform(verbose, controller_path);
851 } else
852 err |= meta->detail_platform(verbose, 0, controller_path);
853 }
854
855 return err;
856 }
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