]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
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.
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.
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
22 * Email: <neilb@suse.de>
31 static int cmpstringp(const void *p1
, const void *p2
)
33 return strcmp(* (char * const *) p1
, * (char * const *) p2
);
36 static int add_device(const char *dev
, char ***p_devices
,
37 int *p_max_devices
, int n_devices
)
39 if (n_devices
+ 1 >= *p_max_devices
) {
41 *p_devices
= xrealloc(*p_devices
, *p_max_devices
*
48 (*p_devices
)[n_devices
] = xstrdup(dev
);
52 int Detail(char *dev
, struct context
*c
)
55 * Print out details for an md array
57 int fd
= open(dev
, O_RDONLY
);
58 mdu_array_info_t array
;
59 mdu_disk_info_t
*disks
= NULL
;
64 char **devices
= NULL
;
65 int max_devices
= 0, n_devices
= 0;
70 char *subarray
= NULL
;
71 int max_disks
= MD_SB_DISKS
; /* just a default */
72 struct mdinfo
*info
= NULL
;
74 struct mdinfo
*subdev
;
76 char *container
= NULL
;
78 int rv
= c
->test
? 4 : 1;
87 pr_err("cannot open %s: %s\n",
88 dev
, strerror(errno
));
91 sra
= sysfs_read(fd
, NULL
, GET_VERSION
| GET_DEVS
|
92 GET_ARRAY_STATE
| GET_STATE
);
94 if (md_get_array_info(fd
, &array
)) {
95 pr_err("%s does not appear to be an md device\n", dev
);
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 &&
109 pr_err("Array associated with md device %s does not exist.\n",
117 pr_err("cannot get array detail for %s: %s\n",
118 dev
, strerror(errno
));
124 if (array
.raid_disks
== 0 && external
)
126 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
131 max_disks
= st
->max_devs
;
134 /* This is a subarray of some container.
135 * We want the name of the container, and the member
137 dev_t devid
= devnm2devid(st
->container_devnm
);
141 container
= map_dev_preferred(major(devid
), minor(devid
),
143 cfd
= open_dev(st
->container_devnm
);
145 err
= st
->ss
->load_container(st
, cfd
, NULL
);
148 info
= st
->ss
->container_content(st
, subarray
);
152 /* try to load a superblock. Try sra->devs first, then try ioctl */
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
;
166 if (md_get_disk_info(fd
, &disk
) < 0)
168 if (d
>= array
.raid_disks
&&
169 disk
.major
== 0 && disk
.minor
== 0)
173 if (array
.raid_disks
> 0 &&
174 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
177 dv
= map_dev(disk
.major
, disk
.minor
, 1);
181 fd2
= dev_open(dv
, O_RDONLY
);
186 st
->ss
->free_super(st
);
188 err
= st
->ss
->load_super(st
, fd2
, NULL
);
195 info
= st
->ss
->container_content(st
, subarray
);
197 info
= xmalloc(sizeof(*info
));
198 st
->ss
->getinfo_super(st
, info
, NULL
);
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
);
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
217 if (memcmp(uuid_zero
,
219 sizeof(uuid_zero
)) == 0) {
220 st
->ss
->free_super(st
);
226 /* Ok, we have some info to print... */
227 if (inactive
&& info
)
228 str
= map_num(pers
, info
->array
.level
);
230 str
= map_num(pers
, array
.level
);
233 if (array
.raid_disks
) {
235 printf("MD_LEVEL=%s\n", str
);
236 printf("MD_DEVICES=%d\n", array
.raid_disks
);
239 printf("MD_LEVEL=container\n");
240 printf("MD_DEVICES=%d\n", array
.nr_disks
);
243 printf("MD_CONTAINER=%s\n", container
);
244 printf("MD_MEMBER=%s\n", member
);
246 if (sra
&& sra
->array
.major_version
< 0)
247 printf("MD_METADATA=%s\n", sra
->text_version
);
249 printf("MD_METADATA=%d.%d\n",
251 array
.minor_version
);
254 if (st
&& st
->sb
&& info
) {
256 struct map_ent
*mp
, *map
= NULL
;
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);
268 if (st
->ss
->export_detail_super
)
269 st
->ss
->export_detail_super(st
);
272 struct map_ent
*mp
, *map
= NULL
;
274 mp
= map_by_devnm(&map
, fd2devnm(fd
));
276 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
277 printf("MD_UUID=%s\n", nbuf
+5);
279 if (mp
&& mp
->path
&&
280 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
281 printf("MD_DEVNAME=");
282 print_escape(mp
->path
+8);
287 if (!c
->no_devices
&& sra
) {
289 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
291 char *sysdev
= xstrdup(mdi
->sys_name
);
294 path
= map_dev(mdi
->disk
.major
,
296 for (cp
= sysdev
; *cp
; cp
++)
300 if (mdi
->disk
.raid_disk
>= 0)
301 printf("MD_DEVICE_%s_ROLE=%d\n",
303 mdi
->disk
.raid_disk
);
305 printf("MD_DEVICE_%s_ROLE=spare\n",
308 printf("MD_DEVICE_%s_DEV=%s\n",
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;
323 next
= array
.raid_disks
* 2;
326 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
327 disks
[next
++] = mdi
->disk
;
328 disks
[next
- 1].number
= -1;
330 } else for (d
= 0; d
< max_disks
; d
++) {
331 mdu_disk_info_t disk
;
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",
339 if (disk
.major
== 0 && disk
.minor
== 0)
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
;
355 avail
= xcalloc(array
.raid_disks
, 1);
357 for (d
= 0; d
< array
.raid_disks
; d
++) {
359 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
360 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
368 mdu_bitmap_file_t bmf
;
369 if (inactive
&& !is_container
)
370 printf("INACTIVE-ARRAY %s", dev
);
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-",
378 else if (is_container
)
379 printf(" level=container num-devices=%d",
382 printf(" num-devices=%d", array
.nr_disks
);
385 printf(" container=%s", container
);
386 printf(" member=%s", member
);
388 if (sra
&& sra
->array
.major_version
< 0)
389 printf(" metadata=%s", sra
->text_version
);
391 printf(" metadata=%d.%d", array
.major_version
,
392 array
.minor_version
);
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
);
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
;
406 devnm
= stat2devnm(&stb
);
407 for (e
= ms
; e
; e
= e
->next
)
408 if (strcmp(e
->devnm
, devnm
) == 0)
410 if (!get_dev_size(fd
, NULL
, &larray_size
))
413 printf("%s:\n", dev
);
416 printf(" Container : %s, member %s\n",
419 if (sra
&& sra
->array
.major_version
< 0)
420 printf(" Version : %s\n",
423 printf(" Version : %d.%d\n",
425 array
.minor_version
);
430 printf(" Creation Time : %.24s\n", ctime(&atime
));
434 printf(" Raid Level : %s\n", str
);
436 printf(" Array Size : %llu%s\n",
438 human_size(larray_size
));
439 if (array
.level
>= 1) {
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
;
446 dsize
= get_component_size(fd
);
448 printf(" Used Dev Size : %llu%s\n",
450 human_size((long long)dsize
<<9));
452 printf(" Used Dev Size : unknown\n");
454 printf(" Used Dev Size : %lu%s\n",
455 (unsigned long)array
.size
,
456 human_size((unsigned long long)
459 if (array
.raid_disks
)
460 printf(" Raid Devices : %d\n", array
.raid_disks
);
461 printf(" Total Devices : %d\n", array
.nr_disks
);
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 " : "");
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
);
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");
480 printf(" Update Time : %.24s\n", ctime(&atime
));
481 if (array
.raid_disks
) {
482 static char *sync_action
[] = {
483 ", recovering", ", resyncing",
484 ", reshaping", ", checking" };
486 if (avail_disks
== array
.raid_disks
)
488 else if (!enough(array
.level
, array
.raid_disks
,
489 array
.layout
, 1, avail
))
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
,
504 printf(" State : %s%s%s%s%s%s%s \n",
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
) ?
514 (e
&& e
->percent
== RESYNC_PENDING
) ?
516 (e
&& e
->percent
== RESYNC_REMOTE
) ?
518 } else if (inactive
&& !is_container
) {
519 printf(" State : inactive\n");
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
);
531 if (array
.level
== 5) {
532 str
= map_num(r5layout
, array
.layout
);
533 printf(" Layout : %s\n",
534 str
? str
: "-unknown-");
536 if (array
.level
== 0 && array
.layout
) {
537 str
= map_num(r0layout
, array
.layout
);
538 printf(" Layout : %s\n",
539 str
? str
: "-unknown-");
541 if (array
.level
== 6) {
542 str
= map_num(r6layout
, array
.layout
);
543 printf(" Layout : %s\n",
544 str
? str
: "-unknown-");
546 if (array
.level
== 10) {
548 print_r10_layout(array
.layout
);
551 switch (array
.level
) {
557 if (array
.chunk_size
)
558 printf(" Chunk Size : %dK\n\n",
559 array
.chunk_size
/1024);
562 printf(" Rounding : %dK\n\n",
563 array
.chunk_size
/1024);
569 if (array
.raid_disks
) {
572 mdi
= sysfs_read(fd
, NULL
, GET_CONSISTENCY_POLICY
);
574 char *policy
= map_num(consistency_policies
,
575 mdi
->consistency_policy
);
578 printf("Consistency Policy : %s\n\n",
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
);
590 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
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));
598 if (info
->delta_disks
!= 0)
599 printf(" Delta Devices : %d, (%d->%d)\n",
601 array
.raid_disks
- info
->delta_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-");
608 if (info
->new_level
!= array
.level
||
609 info
->new_layout
!= array
.layout
) {
610 if (info
->new_level
== 5) {
611 str
= map_num(r5layout
,
613 printf(" New Layout : %s\n",
614 str
? str
: "-unknown-");
616 if (info
->new_level
== 6) {
617 str
= map_num(r6layout
,
619 printf(" New Layout : %s\n",
620 str
? str
: "-unknown-");
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) ?
627 (info
->new_layout
>> 8) & 255);
630 if (info
->new_chunk
!= array
.chunk_size
)
631 printf(" New Chunksize : %dK\n",
632 info
->new_chunk
/1024);
634 } else if (e
&& e
->percent
>= 0)
639 st
->ss
->detail_super(st
, c
->homehost
, subarray
);
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.
648 DIR *dir
= opendir("/sys/block");
651 printf(" Member Arrays :");
653 while (dir
&& (de
= readdir(dir
)) != NULL
) {
656 int nlen
= strlen(sra
->sys_name
);
658 if (de
->d_name
[0] == '.')
661 "/sys/block/%s/md/metadata_version",
663 if (load_sys(path
, vbuf
, sizeof(vbuf
)) < 0)
665 if (strncmp(vbuf
, "external:", 9) ||
666 !is_subarray(vbuf
+ 9) ||
667 strncmp(vbuf
+ 10, sra
->sys_name
, nlen
) ||
668 vbuf
[10 + nlen
] != '/')
670 devid
= devnm2devid(de
->d_name
);
672 map_dev_preferred(major(devid
),
681 if (!c
->no_devices
) {
682 if (array
.raid_disks
)
683 printf(" Number Major Minor RaidDevice State\n");
685 printf(" Number Major Minor RaidDevice\n");
689 /* if --no_devices specified, not print component devices info */
691 goto skip_devices_state
;
693 for (d
= 0; d
< max_disks
* 2; d
++) {
695 mdu_disk_info_t disk
= disks
[d
];
697 if (d
>= array
.raid_disks
* 2 &&
698 disk
.major
== 0 && disk
.minor
== 0)
700 if ((d
& 1) && disk
.major
== 0 && disk
.minor
== 0)
703 if (d
== array
.raid_disks
*2)
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
);
716 printf(" %5d %5d %5d %5d ",
717 disk
.number
, disk
.major
, disk
.minor
,
720 if (!c
->brief
&& array
.raid_disks
) {
721 if (disk
.state
& (1 << MD_DISK_FAULTY
)) {
723 if (disk
.raid_disk
< array
.raid_disks
&&
727 if (disk
.state
& (1 << MD_DISK_ACTIVE
))
729 if (disk
.state
& (1 << MD_DISK_SYNC
)) {
731 if (array
.level
== 10 &&
732 (array
.layout
& ~0x1FFFF) == 0) {
733 int nc
= array
.layout
& 0xff;
734 int fc
= (array
.layout
>> 8) & 0xff;
737 array
.raid_disks
% copies
== 0 &&
739 /* We can divide the devices
742 set
= disk
.raid_disk
% copies
;
743 printf(" set-%c", set
+ 'A');
747 if (disk
.state
& (1 << MD_DISK_REMOVED
))
749 if (disk
.state
& (1 << MD_DISK_WRITEMOSTLY
))
750 printf(" writemostly");
751 if (disk
.state
& (1 << MD_DISK_FAILFAST
))
753 if (disk
.state
& (1 << MD_DISK_JOURNAL
))
756 ((1 << MD_DISK_ACTIVE
) | (1 << MD_DISK_SYNC
) |
757 (1 << MD_DISK_REMOVED
) | (1 << MD_DISK_FAULTY
) |
758 (1 << MD_DISK_JOURNAL
))) == 0) {
760 if (disk
.raid_disk
< array
.raid_disks
&&
762 printf(" rebuilding");
767 dv
= map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
770 n_devices
= add_device(dv
, &devices
,
771 &max_devices
, n_devices
);
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
);
785 st
->ss
->free_super(st
);
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
]);
796 !enough(array
.level
, array
.raid_disks
, array
.layout
, 1, avail
))
805 for (d
= 0; d
< n_devices
; d
++)
812 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
814 /* display platform capabilities for the given metadata format
815 * 'scan' in this context means iterate over all metadata types
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
);
826 pr_err("%s metadata is platform independent\n",
827 ss
->name
? : "[no name]");
830 pr_err("specify a metadata type or --scan\n");
837 for (i
= 0; superlist
[i
]; i
++) {
838 struct superswitch
*meta
= superlist
[i
];
843 pr_err("checking metadata %s\n",
844 meta
->name
? : "[no name]");
845 if (!meta
->detail_platform
) {
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
);
852 err
|= meta
->detail_platform(verbose
, 0, controller_path
);