]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
2332b8526c0f59c63160894888793409de0862ef
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
;
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;
85 pr_err("cannot open %s: %s\n",
86 dev
, strerror(errno
));
89 sra
= sysfs_read(fd
, NULL
, GET_VERSION
| GET_DEVS
| GET_ARRAY_STATE
);
91 if (md_get_array_info(fd
, &array
)) {
92 pr_err("%s does not appear to be an md device\n", dev
);
97 external
= (sra
!= NULL
&& sra
->array
.major_version
== -1 &&
98 sra
->array
.minor_version
== -2);
99 inactive
= (sra
->array_state
== ARRAY_ACTIVE
||
100 sra
->array_state
== ARRAY_CLEAR
);
101 st
= super_by_fd(fd
, &subarray
);
102 if (md_get_array_info(fd
, &array
)) {
103 if (errno
== ENODEV
) {
104 if (sra
->array
.major_version
== -1 &&
105 sra
->array
.minor_version
== -1 &&
107 pr_err("Array associated with md device %s does not exist.\n",
115 pr_err("cannot get array detail for %s: %s\n",
116 dev
, strerror(errno
));
122 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
127 max_disks
= st
->max_devs
;
130 /* This is a subarray of some container.
131 * We want the name of the container, and the member
133 dev_t devid
= devnm2devid(st
->container_devnm
);
137 container
= map_dev_preferred(major(devid
), minor(devid
),
139 cfd
= open_dev(st
->container_devnm
);
141 err
= st
->ss
->load_container(st
, cfd
, NULL
);
144 info
= st
->ss
->container_content(st
, subarray
);
148 /* try to load a superblock. Try sra->devs first, then try ioctl */
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
;
162 if (md_get_disk_info(fd
, &disk
) < 0)
164 if (d
>= array
.raid_disks
&&
165 disk
.major
== 0 && disk
.minor
== 0)
169 if (array
.raid_disks
> 0 &&
170 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
173 dv
= map_dev(disk
.major
, disk
.minor
, 1);
177 fd2
= dev_open(dv
, O_RDONLY
);
182 st
->ss
->free_super(st
);
184 err
= st
->ss
->load_super(st
, fd2
, NULL
);
191 info
= st
->ss
->container_content(st
, subarray
);
193 info
= xmalloc(sizeof(*info
));
194 st
->ss
->getinfo_super(st
, info
, NULL
);
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
);
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
213 if (memcmp(uuid_zero
,
215 sizeof(uuid_zero
)) == 0) {
216 st
->ss
->free_super(st
);
222 /* Ok, we have some info to print... */
223 str
= map_num(pers
, array
.level
);
226 if (array
.raid_disks
) {
228 printf("MD_LEVEL=%s\n", str
);
229 printf("MD_DEVICES=%d\n", array
.raid_disks
);
232 printf("MD_LEVEL=container\n");
233 printf("MD_DEVICES=%d\n", array
.nr_disks
);
236 printf("MD_CONTAINER=%s\n", container
);
237 printf("MD_MEMBER=%s\n", member
);
239 if (sra
&& sra
->array
.major_version
< 0)
240 printf("MD_METADATA=%s\n", sra
->text_version
);
242 printf("MD_METADATA=%d.%d\n",
244 array
.minor_version
);
247 if (st
&& st
->sb
&& info
) {
249 struct map_ent
*mp
, *map
= NULL
;
251 fname_from_uuid(st
, info
, nbuf
, ':');
252 printf("MD_UUID=%s\n", nbuf
+ 5);
253 mp
= map_by_uuid(&map
, info
->uuid
);
254 if (mp
&& mp
->path
&&
255 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
256 printf("MD_DEVNAME=");
257 print_escape(mp
->path
+ 8);
261 if (st
->ss
->export_detail_super
)
262 st
->ss
->export_detail_super(st
);
264 struct map_ent
*mp
, *map
= NULL
;
266 mp
= map_by_devnm(&map
, fd2devnm(fd
));
268 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
269 printf("MD_UUID=%s\n", nbuf
+5);
271 if (mp
&& mp
->path
&&
272 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
273 printf("MD_DEVNAME=");
274 print_escape(mp
->path
+8);
280 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
282 char *sysdev
= xstrdup(mdi
->sys_name
+ 1);
285 path
= map_dev(mdi
->disk
.major
,
287 for (cp
= sysdev
; *cp
; cp
++)
291 if (mdi
->disk
.raid_disk
>= 0)
292 printf("MD_DEVICE_%s_ROLE=%d\n",
294 mdi
->disk
.raid_disk
);
296 printf("MD_DEVICE_%s_ROLE=spare\n",
299 printf("MD_DEVICE_%s_DEV=%s\n",
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;
314 next
= array
.raid_disks
* 2;
318 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
319 disks
[next
++] = mdi
->disk
;
320 disks
[next
- 1].number
= -1;
322 } else for (d
= 0; d
< max_disks
; d
++) {
323 mdu_disk_info_t disk
;
325 if (md_get_disk_info(fd
, &disk
) < 0) {
326 if (d
< array
.raid_disks
)
327 pr_err("cannot get device detail for device %d: %s\n",
331 if (disk
.major
== 0 && disk
.minor
== 0)
333 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
&&
334 disks
[disk
.raid_disk
* 2].state
== (1 << MD_DISK_REMOVED
) &&
335 ((disk
.state
& (1 << MD_DISK_JOURNAL
)) == 0))
336 disks
[disk
.raid_disk
* 2] = disk
;
337 else if (disk
.raid_disk
>= 0 &&
338 disk
.raid_disk
< array
.raid_disks
&&
339 disks
[disk
.raid_disk
* 2 + 1].state
==
340 (1 << MD_DISK_REMOVED
) &&
341 !(disk
.state
& (1 << MD_DISK_JOURNAL
)))
342 disks
[disk
.raid_disk
* 2 + 1] = disk
;
343 else if (next
< max_disks
* 2)
344 disks
[next
++] = disk
;
347 avail
= xcalloc(array
.raid_disks
, 1);
349 for (d
= 0; d
< array
.raid_disks
; d
++) {
351 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
352 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
360 mdu_bitmap_file_t bmf
;
361 printf("%sARRAY %s", inactive
? "INACTIVE-":"", dev
);
362 if (c
->verbose
> 0) {
363 if (array
.raid_disks
)
364 printf(" level=%s num-devices=%d",
365 str
? str
: "-unknown-",
368 printf(" level=container num-devices=%d",
371 printf(" num-devices=%d", array
.nr_disks
);
374 printf(" container=%s", container
);
375 printf(" member=%s", member
);
377 if (sra
&& sra
->array
.major_version
< 0)
378 printf(" metadata=%s", sra
->text_version
);
380 printf(" metadata=%d.%d", array
.major_version
,
381 array
.minor_version
);
384 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
385 if (ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 && bmf
.pathname
[0]) {
386 printf(" bitmap=%s", bmf
.pathname
);
389 mdu_bitmap_file_t bmf
;
390 unsigned long long larray_size
;
391 struct mdstat_ent
*ms
= mdstat_read(0, 0);
392 struct mdstat_ent
*e
;
395 devnm
= stat2devnm(&stb
);
396 for (e
= ms
; e
; e
= e
->next
)
397 if (strcmp(e
->devnm
, devnm
) == 0)
399 if (!get_dev_size(fd
, NULL
, &larray_size
))
402 printf("%s:\n", dev
);
405 printf(" Container : %s, member %s\n",
408 if (sra
&& sra
->array
.major_version
< 0)
409 printf(" Version : %s\n",
412 printf(" Version : %d.%d\n",
414 array
.minor_version
);
419 printf(" Creation Time : %.24s\n", ctime(&atime
));
420 if (array
.raid_disks
== 0 && external
)
423 printf(" Raid Level : %s\n", str
);
425 printf(" Array Size : %llu%s\n",
427 human_size(larray_size
));
428 if (array
.level
>= 1) {
430 array
.major_version
= sra
->array
.major_version
;
431 if (array
.major_version
!= 0 &&
432 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
433 unsigned long long dsize
;
435 dsize
= get_component_size(fd
);
437 printf(" Used Dev Size : %llu%s\n",
439 human_size((long long)dsize
<<9));
441 printf(" Used Dev Size : unknown\n");
443 printf(" Used Dev Size : %lu%s\n",
444 (unsigned long)array
.size
,
445 human_size((unsigned long long)
448 if (array
.raid_disks
)
449 printf(" Raid Devices : %d\n", array
.raid_disks
);
450 printf(" Total Devices : %d\n", array
.nr_disks
);
452 ((sra
== NULL
&& array
.major_version
== 0) ||
453 (sra
&& sra
->array
.major_version
== 0)))
454 printf(" Preferred Minor : %d\n", array
.md_minor
);
455 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
456 printf(" Persistence : Superblock is %spersistent\n",
457 array
.not_persistent
? "not " : "");
459 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
460 if (ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 && bmf
.pathname
[0]) {
461 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
463 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
464 printf(" Intent Bitmap : Internal\n\n");
467 printf(" Update Time : %.24s\n", ctime(&atime
));
468 if (array
.raid_disks
) {
469 static char *sync_action
[] = {
470 ", recovering", ", resyncing",
471 ", reshaping", ", checking" };
473 if (avail_disks
== array
.raid_disks
)
475 else if (!enough(array
.level
, array
.raid_disks
,
476 array
.layout
, 1, avail
))
481 printf(" State : %s%s%s%s%s%s \n",
482 (array
.state
& (1 << MD_SB_CLEAN
)) ?
483 "clean" : "active", st
,
484 (!e
|| (e
->percent
< 0 &&
485 e
->percent
!= RESYNC_PENDING
&&
486 e
->percent
!= RESYNC_DELAYED
)) ?
487 "" : sync_action
[e
->resync
],
488 larray_size
? "": ", Not Started",
489 (e
&& e
->percent
== RESYNC_DELAYED
) ?
491 (e
&& e
->percent
== RESYNC_PENDING
) ?
493 } else if (inactive
) {
494 printf(" State : inactive\n");
496 if (array
.raid_disks
)
497 printf(" Active Devices : %d\n", array
.active_disks
);
498 if (array
.working_disks
> 0)
499 printf(" Working Devices : %d\n",
500 array
.working_disks
);
501 if (array
.raid_disks
) {
502 printf(" Failed Devices : %d\n", array
.failed_disks
);
503 printf(" Spare Devices : %d\n", array
.spare_disks
);
506 if (array
.level
== 5) {
507 str
= map_num(r5layout
, array
.layout
);
508 printf(" Layout : %s\n",
509 str
? str
: "-unknown-");
511 if (array
.level
== 6) {
512 str
= map_num(r6layout
, array
.layout
);
513 printf(" Layout : %s\n",
514 str
? str
: "-unknown-");
516 if (array
.level
== 10) {
518 print_r10_layout(array
.layout
);
521 switch (array
.level
) {
527 if (array
.chunk_size
)
528 printf(" Chunk Size : %dK\n\n",
529 array
.chunk_size
/1024);
532 printf(" Rounding : %dK\n\n",
533 array
.chunk_size
/1024);
539 if (array
.raid_disks
) {
542 mdi
= sysfs_read(fd
, NULL
, GET_CONSISTENCY_POLICY
);
544 char *policy
= map_num(consistency_policies
,
545 mdi
->consistency_policy
);
548 printf("Consistency Policy : %s\n\n",
553 if (e
&& e
->percent
>= 0) {
554 static char *sync_action
[] = {
555 "Rebuild", "Resync", "Reshape", "Check"};
556 printf(" %7s Status : %d%% complete\n",
557 sync_action
[e
->resync
], e
->percent
);
561 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
563 This is pretty boring
564 printf(" Reshape pos'n : %llu%s\n",
565 (unsigned long long) info
->reshape_progress
<< 9,
566 human_size((unsigned long long)
567 info
->reshape_progress
<< 9));
569 if (info
->delta_disks
!= 0)
570 printf(" Delta Devices : %d, (%d->%d)\n",
572 array
.raid_disks
- info
->delta_disks
,
574 if (info
->new_level
!= array
.level
) {
575 str
= map_num(pers
, info
->new_level
);
576 printf(" New Level : %s\n",
577 str
? str
: "-unknown-");
579 if (info
->new_level
!= array
.level
||
580 info
->new_layout
!= array
.layout
) {
581 if (info
->new_level
== 5) {
582 str
= map_num(r5layout
,
584 printf(" New Layout : %s\n",
585 str
? str
: "-unknown-");
587 if (info
->new_level
== 6) {
588 str
= map_num(r6layout
,
590 printf(" New Layout : %s\n",
591 str
? str
: "-unknown-");
593 if (info
->new_level
== 10) {
594 printf(" New Layout : near=%d, %s=%d\n",
595 info
->new_layout
& 255,
596 (info
->new_layout
& 0x10000) ?
598 (info
->new_layout
>> 8) & 255);
601 if (info
->new_chunk
!= array
.chunk_size
)
602 printf(" New Chunksize : %dK\n",
603 info
->new_chunk
/1024);
605 } else if (e
&& e
->percent
>= 0)
608 st
->ss
->detail_super(st
, c
->homehost
);
610 if (array
.raid_disks
== 0 && sra
&&
611 sra
->array
.major_version
== -1 &&
612 sra
->array
.minor_version
== -2 &&
613 sra
->text_version
[0] != '/') {
614 /* This looks like a container. Find any active arrays
615 * That claim to be a member.
617 DIR *dir
= opendir("/sys/block");
620 printf(" Member Arrays :");
622 while (dir
&& (de
= readdir(dir
)) != NULL
) {
625 int nlen
= strlen(sra
->sys_name
);
627 if (de
->d_name
[0] == '.')
630 "/sys/block/%s/md/metadata_version",
632 if (load_sys(path
, vbuf
, sizeof(vbuf
)) < 0)
634 if (strncmp(vbuf
, "external:", 9) ||
635 !is_subarray(vbuf
+ 9) ||
636 strncmp(vbuf
+ 10, sra
->sys_name
, nlen
) ||
637 vbuf
[10 + nlen
] != '/')
639 devid
= devnm2devid(de
->d_name
);
641 map_dev_preferred(major(devid
),
650 if (array
.raid_disks
)
651 printf(" Number Major Minor RaidDevice State\n");
653 printf(" Number Major Minor RaidDevice\n");
657 for (d
= 0; d
< max_disks
* 2; d
++) {
659 mdu_disk_info_t disk
= disks
[d
];
661 if (d
>= array
.raid_disks
* 2 &&
662 disk
.major
== 0 && disk
.minor
== 0)
664 if ((d
& 1) && disk
.major
== 0 && disk
.minor
== 0)
667 if (d
== array
.raid_disks
*2)
669 if (disk
.number
< 0 && disk
.raid_disk
< 0)
670 printf(" - %5d %5d - ",
671 disk
.major
, disk
.minor
);
672 else if (disk
.raid_disk
< 0 ||
673 disk
.state
& (1 << MD_DISK_JOURNAL
))
674 printf(" %5d %5d %5d - ",
675 disk
.number
, disk
.major
, disk
.minor
);
676 else if (disk
.number
< 0)
677 printf(" - %5d %5d %5d ",
678 disk
.major
, disk
.minor
, disk
.raid_disk
);
680 printf(" %5d %5d %5d %5d ",
681 disk
.number
, disk
.major
, disk
.minor
,
684 if (!c
->brief
&& array
.raid_disks
) {
685 if (disk
.state
& (1 << MD_DISK_FAULTY
)) {
687 if (disk
.raid_disk
< array
.raid_disks
&&
691 if (disk
.state
& (1 << MD_DISK_ACTIVE
))
693 if (disk
.state
& (1 << MD_DISK_SYNC
)) {
695 if (array
.level
== 10 &&
696 (array
.layout
& ~0x1FFFF) == 0) {
697 int nc
= array
.layout
& 0xff;
698 int fc
= (array
.layout
>> 8) & 0xff;
701 array
.raid_disks
% copies
== 0 &&
703 /* We can divide the devices
706 set
= disk
.raid_disk
% copies
;
707 printf(" set-%c", set
+ 'A');
711 if (disk
.state
& (1 << MD_DISK_REMOVED
))
713 if (disk
.state
& (1 << MD_DISK_WRITEMOSTLY
))
714 printf(" writemostly");
715 if (disk
.state
& (1 << MD_DISK_FAILFAST
))
717 if (disk
.state
& (1 << MD_DISK_JOURNAL
))
720 ((1 << MD_DISK_ACTIVE
) | (1 << MD_DISK_SYNC
) |
721 (1 << MD_DISK_REMOVED
) | (1 << MD_DISK_FAULTY
) |
722 (1 << MD_DISK_JOURNAL
))) == 0) {
724 if (disk
.raid_disk
< array
.raid_disks
&&
726 printf(" rebuilding");
731 dv
= map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
734 n_devices
= add_device(dv
, &devices
,
735 &max_devices
, n_devices
);
742 if (spares
&& c
->brief
&& array
.raid_disks
)
743 printf(" spares=%d", spares
);
744 if (c
->brief
&& st
&& st
->sb
)
745 st
->ss
->brief_detail_super(st
);
747 st
->ss
->free_super(st
);
749 if (c
->brief
&& c
->verbose
> 0 && devices
) {
750 qsort(devices
, n_devices
, sizeof(*devices
), cmpstringp
);
751 printf("\n devices=%s", devices
[0]);
752 for (d
= 1; d
< n_devices
; d
++)
753 printf(",%s", devices
[d
]);
758 !enough(array
.level
, array
.raid_disks
, array
.layout
, 1, avail
))
766 for (d
= 0; d
< n_devices
; d
++)
773 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
775 /* display platform capabilities for the given metadata format
776 * 'scan' in this context means iterate over all metadata types
781 if (ss
&& export
&& ss
->export_detail_platform
)
782 err
= ss
->export_detail_platform(verbose
, controller_path
);
783 else if (ss
&& ss
->detail_platform
)
784 err
= ss
->detail_platform(verbose
, 0, controller_path
);
787 pr_err("%s metadata is platform independent\n",
788 ss
->name
? : "[no name]");
791 pr_err("specify a metadata type or --scan\n");
798 for (i
= 0; superlist
[i
]; i
++) {
799 struct superswitch
*meta
= superlist
[i
];
804 pr_err("checking metadata %s\n",
805 meta
->name
? : "[no name]");
806 if (!meta
->detail_platform
) {
808 pr_err("%s metadata is platform independent\n",
809 meta
->name
? : "[no name]");
810 } else if (export
&& meta
->export_detail_platform
) {
811 err
|= meta
->export_detail_platform(verbose
, controller_path
);
813 err
|= meta
->detail_platform(verbose
, 0, controller_path
);