]>
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;
86 pr_err("cannot open %s: %s\n",
87 dev
, strerror(errno
));
90 sra
= sysfs_read(fd
, NULL
, GET_VERSION
| GET_DEVS
|
91 GET_ARRAY_STATE
| GET_STATE
);
93 if (md_get_array_info(fd
, &array
)) {
94 pr_err("%s does not appear to be an md device\n", dev
);
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 &&
108 pr_err("Array associated with md device %s does not exist.\n",
116 pr_err("cannot get array detail for %s: %s\n",
117 dev
, strerror(errno
));
123 if (array
.raid_disks
== 0 && external
)
125 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
130 max_disks
= st
->max_devs
;
133 /* This is a subarray of some container.
134 * We want the name of the container, and the member
136 dev_t devid
= devnm2devid(st
->container_devnm
);
140 container
= map_dev_preferred(major(devid
), minor(devid
),
142 cfd
= open_dev(st
->container_devnm
);
144 err
= st
->ss
->load_container(st
, cfd
, NULL
);
147 info
= st
->ss
->container_content(st
, subarray
);
151 /* try to load a superblock. Try sra->devs first, then try ioctl */
153 for (d
= 0, subdev
= sra
? sra
->devs
: NULL
;
154 d
< max_disks
|| subdev
;
155 subdev
? (void)(subdev
= subdev
->next
) : (void)(d
++)){
156 mdu_disk_info_t disk
;
165 if (md_get_disk_info(fd
, &disk
) < 0)
167 if (d
>= array
.raid_disks
&&
168 disk
.major
== 0 && disk
.minor
== 0)
172 if (array
.raid_disks
> 0 &&
173 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
176 dv
= map_dev(disk
.major
, disk
.minor
, 1);
180 fd2
= dev_open(dv
, O_RDONLY
);
185 st
->ss
->free_super(st
);
187 err
= st
->ss
->load_super(st
, fd2
, NULL
);
194 info
= st
->ss
->container_content(st
, subarray
);
196 info
= xmalloc(sizeof(*info
));
197 st
->ss
->getinfo_super(st
, info
, NULL
);
202 if (array
.raid_disks
!= 0 && /* container */
203 (info
->array
.ctime
!= array
.ctime
||
204 info
->array
.level
!= array
.level
)) {
205 st
->ss
->free_super(st
);
208 /* some formats (imsm) have free-floating-spares
209 * with a uuid of uuid_zero, they don't
210 * have very good info about the rest of the
211 * container, so keep searching when
212 * encountering such a device. Otherwise, stop
213 * after the first successful call to
216 if (memcmp(uuid_zero
,
218 sizeof(uuid_zero
)) == 0) {
219 st
->ss
->free_super(st
);
225 /* Ok, we have some info to print... */
226 str
= map_num(pers
, array
.level
);
229 if (array
.raid_disks
) {
231 printf("MD_LEVEL=%s\n", str
);
232 printf("MD_DEVICES=%d\n", array
.raid_disks
);
235 printf("MD_LEVEL=container\n");
236 printf("MD_DEVICES=%d\n", array
.nr_disks
);
239 printf("MD_CONTAINER=%s\n", container
);
240 printf("MD_MEMBER=%s\n", member
);
242 if (sra
&& sra
->array
.major_version
< 0)
243 printf("MD_METADATA=%s\n", sra
->text_version
);
245 printf("MD_METADATA=%d.%d\n",
247 array
.minor_version
);
250 if (st
&& st
->sb
&& info
) {
252 struct map_ent
*mp
, *map
= NULL
;
254 fname_from_uuid(st
, info
, nbuf
, ':');
255 printf("MD_UUID=%s\n", nbuf
+ 5);
256 mp
= map_by_uuid(&map
, info
->uuid
);
257 if (mp
&& mp
->path
&&
258 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
259 printf("MD_DEVNAME=");
260 print_escape(mp
->path
+ 8);
264 if (st
->ss
->export_detail_super
)
265 st
->ss
->export_detail_super(st
);
268 struct map_ent
*mp
, *map
= NULL
;
270 mp
= map_by_devnm(&map
, fd2devnm(fd
));
272 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
273 printf("MD_UUID=%s\n", nbuf
+5);
275 if (mp
&& mp
->path
&&
276 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
277 printf("MD_DEVNAME=");
278 print_escape(mp
->path
+8);
283 if (!c
->no_devices
&& sra
) {
285 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
287 char *sysdev
= xstrdup(mdi
->sys_name
);
290 path
= map_dev(mdi
->disk
.major
,
292 for (cp
= sysdev
; *cp
; cp
++)
296 if (mdi
->disk
.raid_disk
>= 0)
297 printf("MD_DEVICE_%s_ROLE=%d\n",
299 mdi
->disk
.raid_disk
);
301 printf("MD_DEVICE_%s_ROLE=spare\n",
304 printf("MD_DEVICE_%s_DEV=%s\n",
311 disks
= xmalloc(max_disks
* 2 * sizeof(mdu_disk_info_t
));
312 for (d
= 0; d
< max_disks
* 2; d
++) {
313 disks
[d
].state
= (1 << MD_DISK_REMOVED
);
314 disks
[d
].major
= disks
[d
].minor
= 0;
315 disks
[d
].number
= -1;
316 disks
[d
].raid_disk
= d
/ 2;
319 next
= array
.raid_disks
* 2;
322 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
323 disks
[next
++] = mdi
->disk
;
324 disks
[next
- 1].number
= -1;
326 } else for (d
= 0; d
< max_disks
; d
++) {
327 mdu_disk_info_t disk
;
329 if (md_get_disk_info(fd
, &disk
) < 0) {
330 if (d
< array
.raid_disks
)
331 pr_err("cannot get device detail for device %d: %s\n",
335 if (disk
.major
== 0 && disk
.minor
== 0)
337 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
&&
338 disks
[disk
.raid_disk
* 2].state
== (1 << MD_DISK_REMOVED
) &&
339 ((disk
.state
& (1 << MD_DISK_JOURNAL
)) == 0))
340 disks
[disk
.raid_disk
* 2] = disk
;
341 else if (disk
.raid_disk
>= 0 &&
342 disk
.raid_disk
< array
.raid_disks
&&
343 disks
[disk
.raid_disk
* 2 + 1].state
==
344 (1 << MD_DISK_REMOVED
) &&
345 !(disk
.state
& (1 << MD_DISK_JOURNAL
)))
346 disks
[disk
.raid_disk
* 2 + 1] = disk
;
347 else if (next
< max_disks
* 2)
348 disks
[next
++] = disk
;
351 avail
= xcalloc(array
.raid_disks
, 1);
353 for (d
= 0; d
< array
.raid_disks
; d
++) {
355 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
356 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
364 mdu_bitmap_file_t bmf
;
365 if (inactive
&& !is_container
)
366 printf("INACTIVE-ARRAY %s", dev
);
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-",
374 else if (is_container
)
375 printf(" level=container num-devices=%d",
378 printf(" num-devices=%d", array
.nr_disks
);
381 printf(" container=%s", container
);
382 printf(" member=%s", member
);
384 if (sra
&& sra
->array
.major_version
< 0)
385 printf(" metadata=%s", sra
->text_version
);
387 printf(" metadata=%d.%d", array
.major_version
,
388 array
.minor_version
);
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
);
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
;
402 devnm
= stat2devnm(&stb
);
403 for (e
= ms
; e
; e
= e
->next
)
404 if (strcmp(e
->devnm
, devnm
) == 0)
406 if (!get_dev_size(fd
, NULL
, &larray_size
))
409 printf("%s:\n", dev
);
412 printf(" Container : %s, member %s\n",
415 if (sra
&& sra
->array
.major_version
< 0)
416 printf(" Version : %s\n",
419 printf(" Version : %d.%d\n",
421 array
.minor_version
);
426 printf(" Creation Time : %.24s\n", ctime(&atime
));
430 printf(" Raid Level : %s\n", str
);
432 printf(" Array Size : %llu%s\n",
434 human_size(larray_size
));
435 if (array
.level
>= 1) {
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
;
442 dsize
= get_component_size(fd
);
444 printf(" Used Dev Size : %llu%s\n",
446 human_size((long long)dsize
<<9));
448 printf(" Used Dev Size : unknown\n");
450 printf(" Used Dev Size : %lu%s\n",
451 (unsigned long)array
.size
,
452 human_size((unsigned long long)
455 if (array
.raid_disks
)
456 printf(" Raid Devices : %d\n", array
.raid_disks
);
457 printf(" Total Devices : %d\n", array
.nr_disks
);
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 " : "");
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
);
470 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
471 printf(" Intent Bitmap : Internal\n\n");
474 printf(" Update Time : %.24s\n", ctime(&atime
));
475 if (array
.raid_disks
) {
476 static char *sync_action
[] = {
477 ", recovering", ", resyncing",
478 ", reshaping", ", checking" };
480 if (avail_disks
== array
.raid_disks
)
482 else if (!enough(array
.level
, array
.raid_disks
,
483 array
.layout
, 1, avail
))
488 printf(" State : %s%s%s%s%s%s \n",
489 (array
.state
& (1 << MD_SB_CLEAN
)) ?
490 "clean" : "active", st
,
491 (!e
|| (e
->percent
< 0 &&
492 e
->percent
!= RESYNC_PENDING
&&
493 e
->percent
!= RESYNC_DELAYED
)) ?
494 "" : sync_action
[e
->resync
],
495 larray_size
? "": ", Not Started",
496 (e
&& e
->percent
== RESYNC_DELAYED
) ?
498 (e
&& e
->percent
== RESYNC_PENDING
) ?
500 } else if (inactive
&& !is_container
) {
501 printf(" State : inactive\n");
503 if (array
.raid_disks
)
504 printf(" Active Devices : %d\n", array
.active_disks
);
505 if (array
.working_disks
> 0)
506 printf(" Working Devices : %d\n",
507 array
.working_disks
);
508 if (array
.raid_disks
) {
509 printf(" Failed Devices : %d\n", array
.failed_disks
);
510 printf(" Spare Devices : %d\n", array
.spare_disks
);
513 if (array
.level
== 5) {
514 str
= map_num(r5layout
, array
.layout
);
515 printf(" Layout : %s\n",
516 str
? str
: "-unknown-");
518 if (array
.level
== 6) {
519 str
= map_num(r6layout
, array
.layout
);
520 printf(" Layout : %s\n",
521 str
? str
: "-unknown-");
523 if (array
.level
== 10) {
525 print_r10_layout(array
.layout
);
528 switch (array
.level
) {
534 if (array
.chunk_size
)
535 printf(" Chunk Size : %dK\n\n",
536 array
.chunk_size
/1024);
539 printf(" Rounding : %dK\n\n",
540 array
.chunk_size
/1024);
546 if (array
.raid_disks
) {
549 mdi
= sysfs_read(fd
, NULL
, GET_CONSISTENCY_POLICY
);
551 char *policy
= map_num(consistency_policies
,
552 mdi
->consistency_policy
);
555 printf("Consistency Policy : %s\n\n",
560 if (e
&& e
->percent
>= 0) {
561 static char *sync_action
[] = {
562 "Rebuild", "Resync", "Reshape", "Check"};
563 printf(" %7s Status : %d%% complete\n",
564 sync_action
[e
->resync
], e
->percent
);
567 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
569 This is pretty boring
570 printf(" Reshape pos'n : %llu%s\n",
571 (unsigned long long) info
->reshape_progress
<< 9,
572 human_size((unsigned long long)
573 info
->reshape_progress
<< 9));
575 if (info
->delta_disks
!= 0)
576 printf(" Delta Devices : %d, (%d->%d)\n",
578 array
.raid_disks
- info
->delta_disks
,
580 if (info
->new_level
!= array
.level
) {
581 str
= map_num(pers
, info
->new_level
);
582 printf(" New Level : %s\n",
583 str
? str
: "-unknown-");
585 if (info
->new_level
!= array
.level
||
586 info
->new_layout
!= array
.layout
) {
587 if (info
->new_level
== 5) {
588 str
= map_num(r5layout
,
590 printf(" New Layout : %s\n",
591 str
? str
: "-unknown-");
593 if (info
->new_level
== 6) {
594 str
= map_num(r6layout
,
596 printf(" New Layout : %s\n",
597 str
? str
: "-unknown-");
599 if (info
->new_level
== 10) {
600 printf(" New Layout : near=%d, %s=%d\n",
601 info
->new_layout
& 255,
602 (info
->new_layout
& 0x10000) ?
604 (info
->new_layout
>> 8) & 255);
607 if (info
->new_chunk
!= array
.chunk_size
)
608 printf(" New Chunksize : %dK\n",
609 info
->new_chunk
/1024);
611 } else if (e
&& e
->percent
>= 0)
616 st
->ss
->detail_super(st
, c
->homehost
);
618 if (array
.raid_disks
== 0 && sra
&&
619 sra
->array
.major_version
== -1 &&
620 sra
->array
.minor_version
== -2 &&
621 sra
->text_version
[0] != '/') {
622 /* This looks like a container. Find any active arrays
623 * That claim to be a member.
625 DIR *dir
= opendir("/sys/block");
628 printf(" Member Arrays :");
630 while (dir
&& (de
= readdir(dir
)) != NULL
) {
633 int nlen
= strlen(sra
->sys_name
);
635 if (de
->d_name
[0] == '.')
638 "/sys/block/%s/md/metadata_version",
640 if (load_sys(path
, vbuf
, sizeof(vbuf
)) < 0)
642 if (strncmp(vbuf
, "external:", 9) ||
643 !is_subarray(vbuf
+ 9) ||
644 strncmp(vbuf
+ 10, sra
->sys_name
, nlen
) ||
645 vbuf
[10 + nlen
] != '/')
647 devid
= devnm2devid(de
->d_name
);
649 map_dev_preferred(major(devid
),
658 if (!c
->no_devices
) {
659 if (array
.raid_disks
)
660 printf(" Number Major Minor RaidDevice State\n");
662 printf(" Number Major Minor RaidDevice\n");
666 /* if --no_devices specified, not print component devices info */
668 goto skip_devices_state
;
670 for (d
= 0; d
< max_disks
* 2; d
++) {
672 mdu_disk_info_t disk
= disks
[d
];
674 if (d
>= array
.raid_disks
* 2 &&
675 disk
.major
== 0 && disk
.minor
== 0)
677 if ((d
& 1) && disk
.major
== 0 && disk
.minor
== 0)
680 if (d
== array
.raid_disks
*2)
682 if (disk
.number
< 0 && disk
.raid_disk
< 0)
683 printf(" - %5d %5d - ",
684 disk
.major
, disk
.minor
);
685 else if (disk
.raid_disk
< 0 ||
686 disk
.state
& (1 << MD_DISK_JOURNAL
))
687 printf(" %5d %5d %5d - ",
688 disk
.number
, disk
.major
, disk
.minor
);
689 else if (disk
.number
< 0)
690 printf(" - %5d %5d %5d ",
691 disk
.major
, disk
.minor
, disk
.raid_disk
);
693 printf(" %5d %5d %5d %5d ",
694 disk
.number
, disk
.major
, disk
.minor
,
697 if (!c
->brief
&& array
.raid_disks
) {
698 if (disk
.state
& (1 << MD_DISK_FAULTY
)) {
700 if (disk
.raid_disk
< array
.raid_disks
&&
704 if (disk
.state
& (1 << MD_DISK_ACTIVE
))
706 if (disk
.state
& (1 << MD_DISK_SYNC
)) {
708 if (array
.level
== 10 &&
709 (array
.layout
& ~0x1FFFF) == 0) {
710 int nc
= array
.layout
& 0xff;
711 int fc
= (array
.layout
>> 8) & 0xff;
714 array
.raid_disks
% copies
== 0 &&
716 /* We can divide the devices
719 set
= disk
.raid_disk
% copies
;
720 printf(" set-%c", set
+ 'A');
724 if (disk
.state
& (1 << MD_DISK_REMOVED
))
726 if (disk
.state
& (1 << MD_DISK_WRITEMOSTLY
))
727 printf(" writemostly");
728 if (disk
.state
& (1 << MD_DISK_FAILFAST
))
730 if (disk
.state
& (1 << MD_DISK_JOURNAL
))
733 ((1 << MD_DISK_ACTIVE
) | (1 << MD_DISK_SYNC
) |
734 (1 << MD_DISK_REMOVED
) | (1 << MD_DISK_FAULTY
) |
735 (1 << MD_DISK_JOURNAL
))) == 0) {
737 if (disk
.raid_disk
< array
.raid_disks
&&
739 printf(" rebuilding");
744 dv
= map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
747 n_devices
= add_device(dv
, &devices
,
748 &max_devices
, n_devices
);
757 if (spares
&& c
->brief
&& array
.raid_disks
)
758 printf(" spares=%d", spares
);
759 if (c
->brief
&& st
&& st
->sb
)
760 st
->ss
->brief_detail_super(st
);
762 st
->ss
->free_super(st
);
764 if (c
->brief
&& c
->verbose
> 0 && devices
) {
765 qsort(devices
, n_devices
, sizeof(*devices
), cmpstringp
);
766 printf("\n devices=%s", devices
[0]);
767 for (d
= 1; d
< n_devices
; d
++)
768 printf(",%s", devices
[d
]);
773 !enough(array
.level
, array
.raid_disks
, array
.layout
, 1, avail
))
782 for (d
= 0; d
< n_devices
; d
++)
789 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
791 /* display platform capabilities for the given metadata format
792 * 'scan' in this context means iterate over all metadata types
797 if (ss
&& export
&& ss
->export_detail_platform
)
798 err
= ss
->export_detail_platform(verbose
, controller_path
);
799 else if (ss
&& ss
->detail_platform
)
800 err
= ss
->detail_platform(verbose
, 0, controller_path
);
803 pr_err("%s metadata is platform independent\n",
804 ss
->name
? : "[no name]");
807 pr_err("specify a metadata type or --scan\n");
814 for (i
= 0; superlist
[i
]; i
++) {
815 struct superswitch
*meta
= superlist
[i
];
820 pr_err("checking metadata %s\n",
821 meta
->name
? : "[no name]");
822 if (!meta
->detail_platform
) {
824 pr_err("%s metadata is platform independent\n",
825 meta
->name
? : "[no name]");
826 } else if (export
&& meta
->export_detail_platform
) {
827 err
|= meta
->export_detail_platform(verbose
, controller_path
);
829 err
|= meta
->detail_platform(verbose
, 0, controller_path
);