]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
ceb21b1537cdd5be201f4e0467002dd013009f51
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 pr_err("%s does not appear to be an md device\n", dev
);
95 external
= (sra
!= NULL
&& sra
->array
.major_version
== -1 &&
96 sra
->array
.minor_version
== -2);
97 inactive
= (sra
->array_state
== ARRAY_ACTIVE
||
98 sra
->array_state
== ARRAY_CLEAR
);
99 st
= super_by_fd(fd
, &subarray
);
100 if (md_get_array_info(fd
, &array
) && errno
== ENODEV
) {
101 if (sra
->array
.major_version
== -1 &&
102 sra
->array
.minor_version
== -1 &&
104 pr_err("Array associated with md device %s does not exist.\n", dev
);
111 pr_err("cannot get array detail for %s: %s\n",
112 dev
, strerror(errno
));
117 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
122 max_disks
= st
->max_devs
;
125 /* This is a subarray of some container.
126 * We want the name of the container, and the member
128 dev_t devid
= devnm2devid(st
->container_devnm
);
132 container
= map_dev_preferred(major(devid
), minor(devid
),
134 cfd
= open_dev(st
->container_devnm
);
136 err
= st
->ss
->load_container(st
, cfd
, NULL
);
139 info
= st
->ss
->container_content(st
, subarray
);
143 /* try to load a superblock. Try sra->devs first, then try ioctl */
145 for (d
= 0, subdev
= sra
? sra
->devs
: NULL
;
146 d
< max_disks
|| subdev
;
147 subdev
? (void)(subdev
= subdev
->next
) : (void)(d
++)){
148 mdu_disk_info_t disk
;
157 if (md_get_disk_info(fd
, &disk
) < 0)
159 if (d
>= array
.raid_disks
&&
160 disk
.major
== 0 && disk
.minor
== 0)
164 if (array
.raid_disks
> 0 &&
165 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
168 dv
= map_dev(disk
.major
, disk
.minor
, 1);
172 fd2
= dev_open(dv
, O_RDONLY
);
177 st
->ss
->free_super(st
);
179 err
= st
->ss
->load_super(st
, fd2
, NULL
);
186 info
= st
->ss
->container_content(st
, subarray
);
188 info
= xmalloc(sizeof(*info
));
189 st
->ss
->getinfo_super(st
, info
, NULL
);
194 if (array
.raid_disks
!= 0 && /* container */
195 (info
->array
.ctime
!= array
.ctime
||
196 info
->array
.level
!= array
.level
)) {
197 st
->ss
->free_super(st
);
200 /* some formats (imsm) have free-floating-spares
201 * with a uuid of uuid_zero, they don't
202 * have very good info about the rest of the
203 * container, so keep searching when
204 * encountering such a device. Otherwise, stop
205 * after the first successful call to
208 if (memcmp(uuid_zero
,
210 sizeof(uuid_zero
)) == 0) {
211 st
->ss
->free_super(st
);
217 /* Ok, we have some info to print... */
218 str
= map_num(pers
, array
.level
);
221 if (array
.raid_disks
) {
223 printf("MD_LEVEL=%s\n", str
);
224 printf("MD_DEVICES=%d\n", array
.raid_disks
);
227 printf("MD_LEVEL=container\n");
228 printf("MD_DEVICES=%d\n", array
.nr_disks
);
231 printf("MD_CONTAINER=%s\n", container
);
232 printf("MD_MEMBER=%s\n", member
);
234 if (sra
&& sra
->array
.major_version
< 0)
235 printf("MD_METADATA=%s\n", sra
->text_version
);
237 printf("MD_METADATA=%d.%d\n",
239 array
.minor_version
);
242 if (st
&& st
->sb
&& info
) {
244 struct map_ent
*mp
, *map
= NULL
;
246 fname_from_uuid(st
, info
, nbuf
, ':');
247 printf("MD_UUID=%s\n", nbuf
+ 5);
248 mp
= map_by_uuid(&map
, info
->uuid
);
249 if (mp
&& mp
->path
&&
250 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
251 printf("MD_DEVNAME=");
252 print_escape(mp
->path
+ 8);
256 if (st
->ss
->export_detail_super
)
257 st
->ss
->export_detail_super(st
);
259 struct map_ent
*mp
, *map
= NULL
;
261 mp
= map_by_devnm(&map
, fd2devnm(fd
));
263 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
264 printf("MD_UUID=%s\n", nbuf
+5);
266 if (mp
&& mp
->path
&&
267 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
268 printf("MD_DEVNAME=");
269 print_escape(mp
->path
+8);
275 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
277 char *sysdev
= xstrdup(mdi
->sys_name
+ 1);
280 path
= map_dev(mdi
->disk
.major
,
282 for (cp
= sysdev
; *cp
; cp
++)
286 if (mdi
->disk
.raid_disk
>= 0)
287 printf("MD_DEVICE_%s_ROLE=%d\n",
289 mdi
->disk
.raid_disk
);
291 printf("MD_DEVICE_%s_ROLE=spare\n",
294 printf("MD_DEVICE_%s_DEV=%s\n",
301 disks
= xmalloc(max_disks
* 2 * sizeof(mdu_disk_info_t
));
302 for (d
= 0; d
< max_disks
* 2; d
++) {
303 disks
[d
].state
= (1 << MD_DISK_REMOVED
);
304 disks
[d
].major
= disks
[d
].minor
= 0;
305 disks
[d
].number
= -1;
306 disks
[d
].raid_disk
= d
/ 2;
309 next
= array
.raid_disks
* 2;
313 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
314 disks
[next
++] = mdi
->disk
;
315 disks
[next
- 1].number
= -1;
317 } else for (d
= 0; d
< max_disks
; d
++) {
318 mdu_disk_info_t disk
;
320 if (md_get_disk_info(fd
, &disk
) < 0) {
321 if (d
< array
.raid_disks
)
322 pr_err("cannot get device detail for device %d: %s\n",
326 if (disk
.major
== 0 && disk
.minor
== 0)
328 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
&&
329 disks
[disk
.raid_disk
* 2].state
== (1 << MD_DISK_REMOVED
) &&
330 ((disk
.state
& (1 << MD_DISK_JOURNAL
)) == 0))
331 disks
[disk
.raid_disk
* 2] = disk
;
332 else if (disk
.raid_disk
>= 0 &&
333 disk
.raid_disk
< array
.raid_disks
&&
334 disks
[disk
.raid_disk
* 2 + 1].state
==
335 (1 << MD_DISK_REMOVED
) &&
336 !(disk
.state
& (1 << MD_DISK_JOURNAL
)))
337 disks
[disk
.raid_disk
* 2 + 1] = disk
;
338 else if (next
< max_disks
* 2)
339 disks
[next
++] = disk
;
342 avail
= xcalloc(array
.raid_disks
, 1);
344 for (d
= 0; d
< array
.raid_disks
; d
++) {
346 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
347 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
355 mdu_bitmap_file_t bmf
;
356 printf("%sARRAY %s", inactive
? "INACTIVE-":"", dev
);
357 if (c
->verbose
> 0) {
358 if (array
.raid_disks
)
359 printf(" level=%s num-devices=%d",
360 str
? str
: "-unknown-",
363 printf(" level=container num-devices=%d",
366 printf(" num-devices=%d", array
.nr_disks
);
369 printf(" container=%s", container
);
370 printf(" member=%s", member
);
372 if (sra
&& sra
->array
.major_version
< 0)
373 printf(" metadata=%s", sra
->text_version
);
375 printf(" metadata=%d.%d", array
.major_version
,
376 array
.minor_version
);
379 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
380 if (ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 && bmf
.pathname
[0]) {
381 printf(" bitmap=%s", bmf
.pathname
);
384 mdu_bitmap_file_t bmf
;
385 unsigned long long larray_size
;
386 struct mdstat_ent
*ms
= mdstat_read(0, 0);
387 struct mdstat_ent
*e
;
390 devnm
= stat2devnm(&stb
);
391 for (e
= ms
; e
; e
= e
->next
)
392 if (strcmp(e
->devnm
, devnm
) == 0)
394 if (!get_dev_size(fd
, NULL
, &larray_size
))
397 printf("%s:\n", dev
);
400 printf(" Container : %s, member %s\n",
403 if (sra
&& sra
->array
.major_version
< 0)
404 printf(" Version : %s\n",
407 printf(" Version : %d.%d\n",
409 array
.minor_version
);
414 printf(" Creation Time : %.24s\n", ctime(&atime
));
415 if (array
.raid_disks
== 0 && external
)
418 printf(" Raid Level : %s\n", str
);
420 printf(" Array Size : %llu%s\n",
422 human_size(larray_size
));
423 if (array
.level
>= 1) {
425 array
.major_version
= sra
->array
.major_version
;
426 if (array
.major_version
!= 0 &&
427 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
428 unsigned long long dsize
;
430 dsize
= get_component_size(fd
);
432 printf(" Used Dev Size : %llu%s\n",
434 human_size((long long)dsize
<<9));
436 printf(" Used Dev Size : unknown\n");
438 printf(" Used Dev Size : %lu%s\n",
439 (unsigned long)array
.size
,
440 human_size((unsigned long long)
443 if (array
.raid_disks
)
444 printf(" Raid Devices : %d\n", array
.raid_disks
);
445 printf(" Total Devices : %d\n", array
.nr_disks
);
447 ((sra
== NULL
&& array
.major_version
== 0) ||
448 (sra
&& sra
->array
.major_version
== 0)))
449 printf(" Preferred Minor : %d\n", array
.md_minor
);
450 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
451 printf(" Persistence : Superblock is %spersistent\n",
452 array
.not_persistent
? "not " : "");
454 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
455 if (ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 && bmf
.pathname
[0]) {
456 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
458 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
459 printf(" Intent Bitmap : Internal\n\n");
462 printf(" Update Time : %.24s\n", ctime(&atime
));
463 if (array
.raid_disks
) {
464 static char *sync_action
[] = {
465 ", recovering", ", resyncing",
466 ", reshaping", ", checking" };
468 if (avail_disks
== array
.raid_disks
)
470 else if (!enough(array
.level
, array
.raid_disks
,
471 array
.layout
, 1, avail
))
476 printf(" State : %s%s%s%s%s%s \n",
477 (array
.state
& (1 << MD_SB_CLEAN
)) ?
478 "clean" : "active", st
,
479 (!e
|| (e
->percent
< 0 &&
480 e
->percent
!= RESYNC_PENDING
&&
481 e
->percent
!= RESYNC_DELAYED
)) ?
482 "" : sync_action
[e
->resync
],
483 larray_size
? "": ", Not Started",
484 (e
&& e
->percent
== RESYNC_DELAYED
) ?
486 (e
&& e
->percent
== RESYNC_PENDING
) ?
488 } else if (inactive
) {
489 printf(" State : inactive\n");
491 if (array
.raid_disks
)
492 printf(" Active Devices : %d\n", array
.active_disks
);
493 if (array
.working_disks
> 0)
494 printf(" Working Devices : %d\n",
495 array
.working_disks
);
496 if (array
.raid_disks
) {
497 printf(" Failed Devices : %d\n", array
.failed_disks
);
498 printf(" Spare Devices : %d\n", array
.spare_disks
);
501 if (array
.level
== 5) {
502 str
= map_num(r5layout
, array
.layout
);
503 printf(" Layout : %s\n",
504 str
? str
: "-unknown-");
506 if (array
.level
== 6) {
507 str
= map_num(r6layout
, array
.layout
);
508 printf(" Layout : %s\n",
509 str
? str
: "-unknown-");
511 if (array
.level
== 10) {
513 print_r10_layout(array
.layout
);
516 switch (array
.level
) {
522 if (array
.chunk_size
)
523 printf(" Chunk Size : %dK\n\n",
524 array
.chunk_size
/1024);
527 printf(" Rounding : %dK\n\n",
528 array
.chunk_size
/1024);
534 if (array
.raid_disks
) {
537 mdi
= sysfs_read(fd
, NULL
, GET_CONSISTENCY_POLICY
);
539 char *policy
= map_num(consistency_policies
,
540 mdi
->consistency_policy
);
543 printf("Consistency Policy : %s\n\n",
548 if (e
&& e
->percent
>= 0) {
549 static char *sync_action
[] = {
550 "Rebuild", "Resync", "Reshape", "Check"};
551 printf(" %7s Status : %d%% complete\n",
552 sync_action
[e
->resync
], e
->percent
);
556 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
558 This is pretty boring
559 printf(" Reshape pos'n : %llu%s\n",
560 (unsigned long long) info
->reshape_progress
<< 9,
561 human_size((unsigned long long)
562 info
->reshape_progress
<< 9));
564 if (info
->delta_disks
!= 0)
565 printf(" Delta Devices : %d, (%d->%d)\n",
567 array
.raid_disks
- info
->delta_disks
,
569 if (info
->new_level
!= array
.level
) {
570 str
= map_num(pers
, info
->new_level
);
571 printf(" New Level : %s\n",
572 str
? str
: "-unknown-");
574 if (info
->new_level
!= array
.level
||
575 info
->new_layout
!= array
.layout
) {
576 if (info
->new_level
== 5) {
577 str
= map_num(r5layout
,
579 printf(" New Layout : %s\n",
580 str
? str
: "-unknown-");
582 if (info
->new_level
== 6) {
583 str
= map_num(r6layout
,
585 printf(" New Layout : %s\n",
586 str
? str
: "-unknown-");
588 if (info
->new_level
== 10) {
589 printf(" New Layout : near=%d, %s=%d\n",
590 info
->new_layout
& 255,
591 (info
->new_layout
& 0x10000) ?
593 (info
->new_layout
>> 8) & 255);
596 if (info
->new_chunk
!= array
.chunk_size
)
597 printf(" New Chunksize : %dK\n",
598 info
->new_chunk
/1024);
600 } else if (e
&& e
->percent
>= 0)
603 st
->ss
->detail_super(st
, c
->homehost
);
605 if (array
.raid_disks
== 0 && sra
&&
606 sra
->array
.major_version
== -1 &&
607 sra
->array
.minor_version
== -2 &&
608 sra
->text_version
[0] != '/') {
609 /* This looks like a container. Find any active arrays
610 * That claim to be a member.
612 DIR *dir
= opendir("/sys/block");
615 printf(" Member Arrays :");
617 while (dir
&& (de
= readdir(dir
)) != NULL
) {
620 int nlen
= strlen(sra
->sys_name
);
622 if (de
->d_name
[0] == '.')
625 "/sys/block/%s/md/metadata_version",
627 if (load_sys(path
, vbuf
, sizeof(vbuf
)) < 0)
629 if (strncmp(vbuf
, "external:", 9) ||
630 !is_subarray(vbuf
+ 9) ||
631 strncmp(vbuf
+ 10, sra
->sys_name
, nlen
) ||
632 vbuf
[10 + nlen
] != '/')
634 devid
= devnm2devid(de
->d_name
);
636 map_dev_preferred(major(devid
),
645 if (array
.raid_disks
)
646 printf(" Number Major Minor RaidDevice State\n");
648 printf(" Number Major Minor RaidDevice\n");
652 for (d
= 0; d
< max_disks
* 2; d
++) {
654 mdu_disk_info_t disk
= disks
[d
];
656 if (d
>= array
.raid_disks
* 2 &&
657 disk
.major
== 0 && disk
.minor
== 0)
659 if ((d
& 1) && disk
.major
== 0 && disk
.minor
== 0)
662 if (d
== array
.raid_disks
*2)
664 if (disk
.number
< 0 && disk
.raid_disk
< 0)
665 printf(" - %5d %5d - ",
666 disk
.major
, disk
.minor
);
667 else if (disk
.raid_disk
< 0 ||
668 disk
.state
& (1 << MD_DISK_JOURNAL
))
669 printf(" %5d %5d %5d - ",
670 disk
.number
, disk
.major
, disk
.minor
);
671 else if (disk
.number
< 0)
672 printf(" - %5d %5d %5d ",
673 disk
.major
, disk
.minor
, disk
.raid_disk
);
675 printf(" %5d %5d %5d %5d ",
676 disk
.number
, disk
.major
, disk
.minor
,
679 if (!c
->brief
&& array
.raid_disks
) {
680 if (disk
.state
& (1 << MD_DISK_FAULTY
)) {
682 if (disk
.raid_disk
< array
.raid_disks
&&
686 if (disk
.state
& (1 << MD_DISK_ACTIVE
))
688 if (disk
.state
& (1 << MD_DISK_SYNC
)) {
690 if (array
.level
== 10 &&
691 (array
.layout
& ~0x1FFFF) == 0) {
692 int nc
= array
.layout
& 0xff;
693 int fc
= (array
.layout
>> 8) & 0xff;
696 array
.raid_disks
% copies
== 0 &&
698 /* We can divide the devices
701 set
= disk
.raid_disk
% copies
;
702 printf(" set-%c", set
+ 'A');
706 if (disk
.state
& (1 << MD_DISK_REMOVED
))
708 if (disk
.state
& (1 << MD_DISK_WRITEMOSTLY
))
709 printf(" writemostly");
710 if (disk
.state
& (1 << MD_DISK_FAILFAST
))
712 if (disk
.state
& (1 << MD_DISK_JOURNAL
))
715 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)
716 |(1<<MD_DISK_REMOVED
)|(1<<MD_DISK_FAULTY
)|(1<<MD_DISK_JOURNAL
)))
719 if (disk
.raid_disk
< array
.raid_disks
&&
721 printf(" rebuilding");
726 dv
= map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
729 n_devices
= add_device(dv
, &devices
,
730 &max_devices
, n_devices
);
737 if (spares
&& c
->brief
&& array
.raid_disks
)
738 printf(" spares=%d", spares
);
739 if (c
->brief
&& st
&& st
->sb
)
740 st
->ss
->brief_detail_super(st
);
742 st
->ss
->free_super(st
);
744 if (c
->brief
&& c
->verbose
> 0 && devices
) {
745 qsort(devices
, n_devices
, sizeof(*devices
), cmpstringp
);
746 printf("\n devices=%s", devices
[0]);
747 for (d
= 1; d
< n_devices
; d
++)
748 printf(",%s", devices
[d
]);
753 !enough(array
.level
, array
.raid_disks
, array
.layout
, 1, avail
))
761 for (d
= 0; d
< n_devices
; d
++)
768 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
770 /* display platform capabilities for the given metadata format
771 * 'scan' in this context means iterate over all metadata types
776 if (ss
&& export
&& ss
->export_detail_platform
)
777 err
= ss
->export_detail_platform(verbose
, controller_path
);
778 else if (ss
&& ss
->detail_platform
)
779 err
= ss
->detail_platform(verbose
, 0, controller_path
);
782 pr_err("%s metadata is platform independent\n",
783 ss
->name
? : "[no name]");
786 pr_err("specify a metadata type or --scan\n");
793 for (i
= 0; superlist
[i
]; i
++) {
794 struct superswitch
*meta
= superlist
[i
];
799 pr_err("checking metadata %s\n",
800 meta
->name
? : "[no name]");
801 if (!meta
->detail_platform
) {
803 pr_err("%s metadata is platform independent\n",
804 meta
->name
? : "[no name]");
805 } else if (export
&& meta
->export_detail_platform
) {
806 err
|= meta
->export_detail_platform(verbose
, controller_path
);
808 err
|= meta
->detail_platform(verbose
, 0, controller_path
);