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Define sysfs max buffer size
[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 = NULL;
70 char *subarray = NULL;
71 int max_disks = MD_SB_DISKS; /* just a default */
72 struct mdinfo *info = NULL;
73 struct mdinfo *sra = NULL;
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 goto out;
97 }
98 }
99 external = (sra != NULL && sra->array.major_version == -1 &&
100 sra->array.minor_version == -2);
101 inactive = (sra != NULL && !md_array_is_active(sra));
102 st = super_by_fd(fd, &subarray);
103 if (md_get_array_info(fd, &array)) {
104 if (errno == ENODEV) {
105 if (sra->array.major_version == -1 &&
106 sra->array.minor_version == -1 &&
107 sra->devs == NULL) {
108 pr_err("Array associated with md device %s does not exist.\n",
109 dev);
110 goto out;
111 }
112 array = sra->array;
113 } else {
114 pr_err("cannot get array detail for %s: %s\n",
115 dev, strerror(errno));
116 goto out;
117 }
118 }
119
120 if (array.raid_disks == 0 && external)
121 is_container = 1;
122 if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
123 stb.st_rdev = 0;
124 rv = 0;
125
126 if (st)
127 max_disks = st->max_devs;
128
129 if (subarray) {
130 /* This is a subarray of some container.
131 * We want the name of the container, and the member
132 */
133 dev_t devid = devnm2devid(st->container_devnm);
134 int cfd, err;
135
136 member = subarray;
137 container = map_dev_preferred(major(devid), minor(devid),
138 1, c->prefer);
139 cfd = open_dev(st->container_devnm);
140 if (cfd >= 0) {
141 err = st->ss->load_container(st, cfd, NULL);
142 close(cfd);
143 if (err == 0)
144 info = st->ss->container_content(st, subarray);
145 }
146 }
147
148 /* try to load a superblock. Try sra->devs first, then try ioctl */
149 if (st && !info)
150 for (d = 0, subdev = sra ? sra->devs : NULL;
151 d < max_disks || subdev;
152 subdev ? (void)(subdev = subdev->next) : (void)(d++)){
153 mdu_disk_info_t disk;
154 char *dv;
155 int fd2;
156 int err;
157
158 if (subdev)
159 disk = subdev->disk;
160 else {
161 disk.number = d;
162 if (md_get_disk_info(fd, &disk) < 0)
163 continue;
164 if (d >= array.raid_disks &&
165 disk.major == 0 && disk.minor == 0)
166 continue;
167 }
168
169 if (array.raid_disks > 0 &&
170 (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
171 continue;
172
173 dv = map_dev(disk.major, disk.minor, 1);
174 if (!dv)
175 continue;
176
177 fd2 = dev_open(dv, O_RDONLY);
178 if (fd2 < 0)
179 continue;
180
181 if (st->sb)
182 st->ss->free_super(st);
183
184 err = st->ss->load_super(st, fd2, NULL);
185 close(fd2);
186 if (err)
187 continue;
188 if (info)
189 free(info);
190 if (subarray)
191 info = st->ss->container_content(st, subarray);
192 else {
193 info = xmalloc(sizeof(*info));
194 st->ss->getinfo_super(st, info, NULL);
195 }
196 if (!info)
197 continue;
198
199 if (array.raid_disks != 0 && /* container */
200 (info->array.ctime != array.ctime ||
201 info->array.level != array.level)) {
202 st->ss->free_super(st);
203 continue;
204 }
205 /* some formats (imsm) have free-floating-spares
206 * with a uuid of uuid_zero, they don't
207 * have very good info about the rest of the
208 * container, so keep searching when
209 * encountering such a device. Otherwise, stop
210 * after the first successful call to
211 * ->load_super.
212 */
213 if (memcmp(uuid_zero,
214 info->uuid,
215 sizeof(uuid_zero)) == 0) {
216 st->ss->free_super(st);
217 continue;
218 }
219 break;
220 }
221
222 /* Ok, we have some info to print... */
223 if (inactive && info)
224 str = map_num(pers, info->array.level);
225 else
226 str = map_num(pers, array.level);
227
228 if (c->export) {
229 if (array.raid_disks) {
230 if (str)
231 printf("MD_LEVEL=%s\n", str);
232 printf("MD_DEVICES=%d\n", array.raid_disks);
233 } else {
234 if (is_container)
235 printf("MD_LEVEL=container\n");
236 printf("MD_DEVICES=%d\n", array.nr_disks);
237 }
238 if (container) {
239 printf("MD_CONTAINER=%s\n", container);
240 printf("MD_MEMBER=%s\n", member);
241 } else {
242 if (sra && sra->array.major_version < 0)
243 printf("MD_METADATA=%s\n", sra->text_version);
244 else
245 printf("MD_METADATA=%d.%d\n",
246 array.major_version,
247 array.minor_version);
248 }
249
250 if (st && st->sb && info) {
251 char nbuf[64];
252 struct map_ent *mp, *map = NULL;
253
254 fname_from_uuid(st, info, nbuf, ':');
255 printf("MD_UUID=%s\n", nbuf + 5);
256 mp = map_by_uuid(&map, info->uuid);
257
258 if (mp && mp->path && strncmp(mp->path, DEV_MD_DIR, DEV_MD_DIR_LEN) == 0)
259 printf("MD_DEVNAME=%s\n", mp->path + DEV_MD_DIR_LEN);
260
261 if (st->ss->export_detail_super)
262 st->ss->export_detail_super(st);
263 map_free(map);
264 } else {
265 struct map_ent *mp, *map = NULL;
266 char nbuf[64];
267 mp = map_by_devnm(&map, fd2devnm(fd));
268 if (mp) {
269 __fname_from_uuid(mp->uuid, 0, nbuf, ':');
270 printf("MD_UUID=%s\n", nbuf+5);
271 }
272 if (mp && mp->path && strncmp(mp->path, DEV_MD_DIR, DEV_MD_DIR_LEN) == 0)
273 printf("MD_DEVNAME=%s\n", mp->path + DEV_MD_DIR_LEN);
274
275 map_free(map);
276 }
277 if (!c->no_devices && sra) {
278 struct mdinfo *mdi;
279 for (mdi = sra->devs; mdi; mdi = mdi->next) {
280 char *path;
281 char *sysdev = xstrdup(mdi->sys_name);
282 char *cp;
283
284 path = map_dev(mdi->disk.major,
285 mdi->disk.minor, 0);
286 for (cp = sysdev; *cp; cp++)
287 if (!isalnum(*cp))
288 *cp = '_';
289
290 if (mdi->disk.raid_disk >= 0)
291 printf("MD_DEVICE_%s_ROLE=%d\n",
292 sysdev,
293 mdi->disk.raid_disk);
294 else
295 printf("MD_DEVICE_%s_ROLE=spare\n",
296 sysdev);
297 if (path)
298 printf("MD_DEVICE_%s_DEV=%s\n",
299 sysdev, path);
300 free(sysdev);
301 }
302 }
303 goto out;
304 }
305
306 disks = xmalloc(max_disks * 2 * sizeof(mdu_disk_info_t));
307 for (d = 0; d < max_disks * 2; d++) {
308 disks[d].state = (1 << MD_DISK_REMOVED);
309 disks[d].major = disks[d].minor = 0;
310 disks[d].number = -1;
311 disks[d].raid_disk = d / 2;
312 }
313
314 next = array.raid_disks * 2;
315 if (inactive) {
316 struct mdinfo *mdi;
317 for (mdi = sra->devs; mdi; mdi = mdi->next) {
318 disks[next++] = mdi->disk;
319 disks[next - 1].number = -1;
320 }
321 } else for (d = 0; d < max_disks; d++) {
322 mdu_disk_info_t disk;
323 disk.number = d;
324 if (md_get_disk_info(fd, &disk) < 0) {
325 if (d < array.raid_disks)
326 pr_err("cannot get device detail for device %d: %s\n",
327 d, strerror(errno));
328 continue;
329 }
330 if (disk.major == 0 && disk.minor == 0)
331 continue;
332 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks &&
333 disks[disk.raid_disk * 2].state == (1 << MD_DISK_REMOVED) &&
334 ((disk.state & (1 << MD_DISK_JOURNAL)) == 0))
335 disks[disk.raid_disk * 2] = disk;
336 else if (disk.raid_disk >= 0 &&
337 disk.raid_disk < array.raid_disks &&
338 disks[disk.raid_disk * 2 + 1].state ==
339 (1 << MD_DISK_REMOVED) &&
340 !(disk.state & (1 << MD_DISK_JOURNAL)))
341 disks[disk.raid_disk * 2 + 1] = disk;
342 else if (next < max_disks * 2)
343 disks[next++] = disk;
344 }
345
346 avail = xcalloc(array.raid_disks, 1);
347
348 for (d = 0; d < array.raid_disks; d++) {
349 char dv[PATH_MAX], dv_rep[PATH_MAX];
350 snprintf(dv, PATH_MAX, "/sys/dev/block/%d:%d",
351 disks[d*2].major, disks[d*2].minor);
352 snprintf(dv_rep, PATH_MAX, "/sys/dev/block/%d:%d",
353 disks[d*2+1].major, disks[d*2+1].minor);
354
355 if ((is_dev_alive(dv) && (disks[d*2].state & (1<<MD_DISK_SYNC))) ||
356 (is_dev_alive(dv_rep) && (disks[d*2+1].state & (1<<MD_DISK_SYNC)))) {
357 avail_disks ++;
358 avail[d] = 1;
359 } else
360 rv |= !! c->test;
361 }
362
363 if (c->brief) {
364 mdu_bitmap_file_t bmf;
365 if (inactive && !is_container)
366 printf("INACTIVE-ARRAY %s", dev);
367 else
368 printf("ARRAY %s", dev);
369 if (c->verbose > 0) {
370 if (array.raid_disks)
371 printf(" level=%s num-devices=%d",
372 str ? str : "-unknown-",
373 array.raid_disks);
374 else if (is_container)
375 printf(" level=container num-devices=%d",
376 array.nr_disks);
377 else
378 printf(" num-devices=%d", array.nr_disks);
379 }
380 if (container) {
381 printf(" container=%s", container);
382 printf(" member=%s", member);
383 } else {
384 if (sra && sra->array.major_version < 0)
385 printf(" metadata=%s", sra->text_version);
386 else
387 printf(" metadata=%d.%d", array.major_version,
388 array.minor_version);
389 }
390
391 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
392 if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && bmf.pathname[0]) {
393 printf(" bitmap=%s", bmf.pathname);
394 }
395 } else {
396 mdu_bitmap_file_t bmf;
397 unsigned long long larray_size;
398 struct mdstat_ent *ms = mdstat_read(0, 0);
399 struct mdstat_ent *e;
400 char *devnm;
401
402 devnm = stat2devnm(&stb);
403 for (e = ms; e; e = e->next)
404 if (strcmp(e->devnm, devnm) == 0)
405 break;
406 if (!get_dev_size(fd, NULL, &larray_size))
407 larray_size = 0;
408
409 printf("%s:\n", dev);
410
411 if (container)
412 printf(" Container : %s, member %s\n",
413 container, member);
414 else {
415 if (sra && sra->array.major_version < 0)
416 printf(" Version : %s\n",
417 sra->text_version);
418 else
419 printf(" Version : %d.%d\n",
420 array.major_version,
421 array.minor_version);
422 }
423
424 atime = array.ctime;
425 if (atime)
426 printf(" Creation Time : %.24s\n", ctime(&atime));
427 if (is_container)
428 str = "container";
429 if (str)
430 printf(" Raid Level : %s\n", str);
431 if (larray_size)
432 printf(" Array Size : %llu%s\n",
433 (larray_size >> 10),
434 human_size(larray_size));
435 if (array.level >= 1) {
436 if (sra)
437 array.major_version = sra->array.major_version;
438 if (array.major_version != 0 &&
439 (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
440 unsigned long long dsize;
441
442 dsize = get_component_size(fd);
443 if (dsize > 0)
444 printf(" Used Dev Size : %llu%s\n",
445 dsize/2,
446 human_size((long long)dsize<<9));
447 else
448 printf(" Used Dev Size : unknown\n");
449 } else
450 printf(" Used Dev Size : %lu%s\n",
451 (unsigned long)array.size,
452 human_size((unsigned long long)
453 array.size << 10));
454 }
455 if (array.raid_disks)
456 printf(" Raid Devices : %d\n", array.raid_disks);
457 printf(" Total Devices : %d\n", array.nr_disks);
458 if (!container &&
459 ((sra == NULL && array.major_version == 0) ||
460 (sra && sra->array.major_version == 0)))
461 printf(" Preferred Minor : %d\n", array.md_minor);
462 if (sra == NULL || sra->array.major_version >= 0)
463 printf(" Persistence : Superblock is %spersistent\n",
464 array.not_persistent ? "not " : "");
465 printf("\n");
466 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
467 if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && bmf.pathname[0]) {
468 printf(" Intent Bitmap : %s\n", bmf.pathname);
469 printf("\n");
470 } else if (array.state & (1<<MD_SB_CLUSTERED))
471 printf(" Intent Bitmap : Internal(Clustered)\n\n");
472 else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
473 printf(" Intent Bitmap : Internal\n\n");
474 atime = array.utime;
475 if (atime)
476 printf(" Update Time : %.24s\n", ctime(&atime));
477 if (array.raid_disks) {
478 static char *sync_action[] = {
479 ", recovering", ", resyncing",
480 ", reshaping", ", checking" };
481 char *st;
482 if (avail_disks == array.raid_disks)
483 st = "";
484 else if (!enough(array.level, array.raid_disks,
485 array.layout, 1, avail))
486 st = ", FAILED";
487 else
488 st = ", degraded";
489
490 if (array.state & (1 << MD_SB_CLEAN)) {
491 if ((array.level == 0) ||
492 (array.level == LEVEL_LINEAR))
493 arrayst = map_num_s(sysfs_array_states,
494 sra->array_state);
495 else
496 arrayst = "clean";
497 } else {
498 arrayst = "active";
499 if (array.state & (1<<MD_SB_CLUSTERED)) {
500 for (d = 0; d < max_disks * 2; d++) {
501 char *dv;
502 mdu_disk_info_t disk = disks[d];
503
504 /* only check first valid disk in cluster env */
505 if ((disk.state & (MD_DISK_SYNC | MD_DISK_ACTIVE))
506 && (disk.major | disk.minor)) {
507 dv = map_dev_preferred(disk.major, disk.minor, 0,
508 c->prefer);
509 if (!dv)
510 continue;
511 arrayst = IsBitmapDirty(dv) ? "active" : "clean";
512 break;
513 }
514 }
515 }
516 }
517
518 printf(" State : %s%s%s%s%s%s%s \n",
519 arrayst, st,
520 (!e || (e->percent < 0 &&
521 e->percent != RESYNC_PENDING &&
522 e->percent != RESYNC_DELAYED &&
523 e->percent != RESYNC_REMOTE)) ?
524 "" : sync_action[e->resync],
525 larray_size ? "": ", Not Started",
526 (e && e->percent == RESYNC_DELAYED) ?
527 " (DELAYED)": "",
528 (e && e->percent == RESYNC_PENDING) ?
529 " (PENDING)": "",
530 (e && e->percent == RESYNC_REMOTE) ?
531 " (REMOTE)": "");
532 } else if (inactive && !is_container) {
533 printf(" State : inactive\n");
534 }
535 if (array.raid_disks)
536 printf(" Active Devices : %d\n", array.active_disks);
537 if (array.working_disks > 0)
538 printf(" Working Devices : %d\n",
539 array.working_disks);
540 if (array.raid_disks) {
541 printf(" Failed Devices : %d\n", array.failed_disks);
542 if (!external)
543 printf(" Spare Devices : %d\n", array.spare_disks);
544 }
545 printf("\n");
546 if (array.level == 5) {
547 str = map_num(r5layout, array.layout);
548 printf(" Layout : %s\n",
549 str ? str : "-unknown-");
550 }
551 if (array.level == 0 && array.layout) {
552 str = map_num(r0layout, array.layout);
553 printf(" Layout : %s\n",
554 str ? str : "-unknown-");
555 }
556 if (array.level == 6) {
557 str = map_num(r6layout, array.layout);
558 printf(" Layout : %s\n",
559 str ? str : "-unknown-");
560 }
561 if (array.level == 10) {
562 printf(" Layout :");
563 print_r10_layout(array.layout);
564 printf("\n");
565 }
566 switch (array.level) {
567 case 0:
568 case 4:
569 case 5:
570 case 10:
571 case 6:
572 if (array.chunk_size)
573 printf(" Chunk Size : %dK\n\n",
574 array.chunk_size/1024);
575 break;
576 case -1:
577 printf(" Rounding : %dK\n\n",
578 array.chunk_size/1024);
579 break;
580 default:
581 break;
582 }
583
584 if (array.raid_disks) {
585 struct mdinfo *mdi;
586
587 mdi = sysfs_read(fd, NULL, GET_CONSISTENCY_POLICY);
588 if (mdi) {
589 char *policy = map_num(consistency_policies,
590 mdi->consistency_policy);
591 sysfs_free(mdi);
592 if (policy)
593 printf("Consistency Policy : %s\n\n",
594 policy);
595 }
596 }
597
598 if (e && e->percent >= 0) {
599 static char *sync_action[] = {
600 "Rebuild", "Resync", "Reshape", "Check"};
601 printf(" %7s Status : %d%% complete\n",
602 sync_action[e->resync], e->percent);
603 }
604
605 if ((st && st->sb) && (info && info->reshape_active)) {
606 if (info->delta_disks != 0)
607 printf(" Delta Devices : %d, (%d->%d)\n",
608 info->delta_disks,
609 array.raid_disks - info->delta_disks,
610 array.raid_disks);
611 if (info->new_level != array.level) {
612 str = map_num(pers, info->new_level);
613 printf(" New Level : %s\n",
614 str ? str : "-unknown-");
615 }
616 if (info->new_level != array.level ||
617 info->new_layout != array.layout) {
618 if (info->new_level == 5) {
619 str = map_num(r5layout,
620 info->new_layout);
621 printf(" New Layout : %s\n",
622 str ? str : "-unknown-");
623 }
624 if (info->new_level == 6) {
625 str = map_num(r6layout,
626 info->new_layout);
627 printf(" New Layout : %s\n",
628 str ? str : "-unknown-");
629 }
630 if (info->new_level == 10) {
631 printf(" New Layout : near=%d, %s=%d\n",
632 info->new_layout & 255,
633 (info->new_layout & 0x10000) ?
634 "offset" : "far",
635 (info->new_layout >> 8) & 255);
636 }
637 }
638 if (info->new_chunk != array.chunk_size)
639 printf(" New Chunksize : %dK\n",
640 info->new_chunk/1024);
641 printf("\n");
642 } else if (e && e->percent >= 0)
643 printf("\n");
644 free_mdstat(ms);
645
646 if (st && st->sb)
647 st->ss->detail_super(st, c->homehost, subarray);
648
649 if (array.raid_disks == 0 && sra &&
650 sra->array.major_version == -1 &&
651 sra->array.minor_version == -2 &&
652 sra->text_version[0] != '/') {
653 /* This looks like a container. Find any active arrays
654 * That claim to be a member.
655 */
656 DIR *dir = opendir("/sys/block");
657 struct dirent *de;
658
659 printf(" Member Arrays :");
660
661 while (dir && (de = readdir(dir)) != NULL) {
662 char path[287];
663 char vbuf[1024];
664 int nlen = strlen(sra->sys_name);
665 dev_t devid;
666 if (de->d_name[0] == '.')
667 continue;
668 sprintf(path,
669 "/sys/block/%s/md/metadata_version",
670 de->d_name);
671 if (load_sys(path, vbuf, sizeof(vbuf)) < 0)
672 continue;
673 if (strncmp(vbuf, "external:", 9) ||
674 !is_subarray(vbuf + 9) ||
675 strncmp(vbuf + 10, sra->sys_name, nlen) ||
676 vbuf[10 + nlen] != '/')
677 continue;
678 devid = devnm2devid(de->d_name);
679 printf(" %s",
680 map_dev_preferred(major(devid),
681 minor(devid), 1,
682 c->prefer));
683 }
684 if (dir)
685 closedir(dir);
686 printf("\n\n");
687 }
688
689 if (!c->no_devices) {
690 if (array.raid_disks)
691 printf(" Number Major Minor RaidDevice State\n");
692 else
693 printf(" Number Major Minor RaidDevice\n");
694 }
695 }
696
697 /* if --no_devices specified, not print component devices info */
698 if (c->no_devices)
699 goto skip_devices_state;
700
701 for (d = 0; d < max_disks * 2; d++) {
702 char *dv;
703 mdu_disk_info_t disk = disks[d];
704
705 if (d >= array.raid_disks * 2 &&
706 disk.major == 0 && disk.minor == 0)
707 continue;
708 if ((d & 1) && disk.major == 0 && disk.minor == 0)
709 continue;
710 if (!c->brief) {
711 if (d == array.raid_disks*2)
712 printf("\n");
713 if (disk.number < 0 && disk.raid_disk < 0)
714 printf(" - %5d %5d - ",
715 disk.major, disk.minor);
716 else if (disk.raid_disk < 0 ||
717 disk.state & (1 << MD_DISK_JOURNAL))
718 printf(" %5d %5d %5d - ",
719 disk.number, disk.major, disk.minor);
720 else if (disk.number < 0)
721 printf(" - %5d %5d %5d ",
722 disk.major, disk.minor, disk.raid_disk);
723 else
724 printf(" %5d %5d %5d %5d ",
725 disk.number, disk.major, disk.minor,
726 disk.raid_disk);
727 }
728 if (!c->brief && array.raid_disks) {
729 if (disk.state & (1 << MD_DISK_FAULTY)) {
730 printf(" faulty");
731 if (disk.raid_disk < array.raid_disks &&
732 disk.raid_disk >= 0)
733 failed++;
734 }
735 if (disk.state & (1 << MD_DISK_ACTIVE))
736 printf(" active");
737 if (disk.state & (1 << MD_DISK_SYNC)) {
738 printf(" sync");
739 if (array.level == 10 &&
740 (array.layout & ~0x1FFFF) == 0) {
741 int nc = array.layout & 0xff;
742 int fc = (array.layout >> 8) & 0xff;
743 int copies = nc*fc;
744 if (fc == 1 &&
745 array.raid_disks % copies == 0 &&
746 copies <= 26) {
747 /* We can divide the devices
748 into 'sets' */
749 int set;
750 set = disk.raid_disk % copies;
751 printf(" set-%c", set + 'A');
752 }
753 }
754 }
755 if (disk.state & (1 << MD_DISK_REMOVED))
756 printf(" removed");
757 if (disk.state & (1 << MD_DISK_WRITEMOSTLY))
758 printf(" writemostly");
759 if (disk.state & (1 << MD_DISK_FAILFAST))
760 printf(" failfast");
761 if (disk.state & (1 << MD_DISK_JOURNAL))
762 printf(" journal");
763 if ((disk.state &
764 ((1 << MD_DISK_ACTIVE) | (1 << MD_DISK_SYNC) |
765 (1 << MD_DISK_REMOVED) | (1 << MD_DISK_FAULTY) |
766 (1 << MD_DISK_JOURNAL))) == 0) {
767 printf(" spare");
768 if (disk.raid_disk < array.raid_disks &&
769 disk.raid_disk >= 0)
770 printf(" rebuilding");
771 }
772 }
773 if (disk.state == 0)
774 spares++;
775 dv = map_dev_preferred(disk.major, disk.minor, 0, c->prefer);
776 if (dv != NULL) {
777 if (c->brief)
778 n_devices = add_device(dv, &devices,
779 &max_devices, n_devices);
780 else
781 printf(" %s", dv);
782 } else if (disk.major | disk.minor)
783 printf(" missing");
784 if (!c->brief)
785 printf("\n");
786 }
787
788 skip_devices_state:
789 if (spares && c->brief && array.raid_disks)
790 printf(" spares=%d", spares);
791 if (c->brief && st && st->sb)
792 st->ss->brief_detail_super(st, subarray);
793 if (st)
794 st->ss->free_super(st);
795
796 if (c->brief && c->verbose > 0 && devices) {
797 qsort(devices, n_devices, sizeof(*devices), cmpstringp);
798 printf("\n devices=%s", devices[0]);
799 for (d = 1; d < n_devices; d++)
800 printf(",%s", devices[d]);
801 }
802 if (c->brief)
803 printf("\n");
804 if (c->test &&
805 !enough(array.level, array.raid_disks, array.layout, 1, avail))
806 rv = 2;
807
808 out:
809 free(info);
810 free(disks);
811 close(fd);
812 free(subarray);
813 free(avail);
814 if (devices)
815 for (d = 0; d < n_devices; d++)
816 free(devices[d]);
817 free(devices);
818 sysfs_free(sra);
819 free(st);
820 return rv;
821 }
822
823 int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path)
824 {
825 /* display platform capabilities for the given metadata format
826 * 'scan' in this context means iterate over all metadata types
827 */
828 int i;
829 int err = 1;
830
831 if (ss && export && ss->export_detail_platform)
832 err = ss->export_detail_platform(verbose, controller_path);
833 else if (ss && ss->detail_platform)
834 err = ss->detail_platform(verbose, 0, controller_path);
835 else if (ss) {
836 if (verbose > 0)
837 pr_err("%s metadata is platform independent\n",
838 ss->name ? : "[no name]");
839 } else if (!scan) {
840 if (verbose > 0)
841 pr_err("specify a metadata type or --scan\n");
842 }
843
844 if (!scan)
845 return err;
846
847 err = 0;
848 for (i = 0; superlist[i]; i++) {
849 struct superswitch *meta = superlist[i];
850
851 if (meta == ss)
852 continue;
853 if (verbose > 0)
854 pr_err("checking metadata %s\n",
855 meta->name ? : "[no name]");
856 if (!meta->detail_platform) {
857 if (verbose > 0)
858 pr_err("%s metadata is platform independent\n",
859 meta->name ? : "[no name]");
860 } else if (export && meta->export_detail_platform) {
861 err |= meta->export_detail_platform(verbose, controller_path);
862 } else
863 err |= meta->detail_platform(verbose, 0, controller_path);
864 }
865
866 return err;
867 }
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