]>
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
;
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
) && errno
== ENODEV
) {
103 if (sra
->array
.major_version
== -1 &&
104 sra
->array
.minor_version
== -1 &&
106 pr_err("Array associated with md device %s does not exist.\n", dev
);
113 pr_err("cannot get array detail for %s: %s\n",
114 dev
, strerror(errno
));
119 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
124 max_disks
= st
->max_devs
;
127 /* This is a subarray of some container.
128 * We want the name of the container, and the member
130 dev_t devid
= devnm2devid(st
->container_devnm
);
134 container
= map_dev_preferred(major(devid
), minor(devid
),
136 cfd
= open_dev(st
->container_devnm
);
138 err
= st
->ss
->load_container(st
, cfd
, NULL
);
141 info
= st
->ss
->container_content(st
, subarray
);
145 /* try to load a superblock. Try sra->devs first, then try ioctl */
147 for (d
= 0, subdev
= sra
? sra
->devs
: NULL
;
148 d
< max_disks
|| subdev
;
149 subdev
? (void)(subdev
= subdev
->next
) : (void)(d
++)){
150 mdu_disk_info_t disk
;
159 if (md_get_disk_info(fd
, &disk
) < 0)
161 if (d
>= array
.raid_disks
&&
162 disk
.major
== 0 && disk
.minor
== 0)
166 if (array
.raid_disks
> 0 &&
167 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
170 dv
= map_dev(disk
.major
, disk
.minor
, 1);
174 fd2
= dev_open(dv
, O_RDONLY
);
179 st
->ss
->free_super(st
);
181 err
= st
->ss
->load_super(st
, fd2
, NULL
);
188 info
= st
->ss
->container_content(st
, subarray
);
190 info
= xmalloc(sizeof(*info
));
191 st
->ss
->getinfo_super(st
, info
, NULL
);
196 if (array
.raid_disks
!= 0 && /* container */
197 (info
->array
.ctime
!= array
.ctime
||
198 info
->array
.level
!= array
.level
)) {
199 st
->ss
->free_super(st
);
202 /* some formats (imsm) have free-floating-spares
203 * with a uuid of uuid_zero, they don't
204 * have very good info about the rest of the
205 * container, so keep searching when
206 * encountering such a device. Otherwise, stop
207 * after the first successful call to
210 if (memcmp(uuid_zero
,
212 sizeof(uuid_zero
)) == 0) {
213 st
->ss
->free_super(st
);
219 /* Ok, we have some info to print... */
220 str
= map_num(pers
, array
.level
);
223 if (array
.raid_disks
) {
225 printf("MD_LEVEL=%s\n", str
);
226 printf("MD_DEVICES=%d\n", array
.raid_disks
);
229 printf("MD_LEVEL=container\n");
230 printf("MD_DEVICES=%d\n", array
.nr_disks
);
233 printf("MD_CONTAINER=%s\n", container
);
234 printf("MD_MEMBER=%s\n", member
);
236 if (sra
&& sra
->array
.major_version
< 0)
237 printf("MD_METADATA=%s\n", sra
->text_version
);
239 printf("MD_METADATA=%d.%d\n",
241 array
.minor_version
);
244 if (st
&& st
->sb
&& info
) {
246 struct map_ent
*mp
, *map
= NULL
;
248 fname_from_uuid(st
, info
, nbuf
, ':');
249 printf("MD_UUID=%s\n", nbuf
+ 5);
250 mp
= map_by_uuid(&map
, info
->uuid
);
251 if (mp
&& mp
->path
&&
252 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
253 printf("MD_DEVNAME=");
254 print_escape(mp
->path
+ 8);
258 if (st
->ss
->export_detail_super
)
259 st
->ss
->export_detail_super(st
);
261 struct map_ent
*mp
, *map
= NULL
;
263 mp
= map_by_devnm(&map
, fd2devnm(fd
));
265 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
266 printf("MD_UUID=%s\n", nbuf
+5);
268 if (mp
&& mp
->path
&&
269 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
270 printf("MD_DEVNAME=");
271 print_escape(mp
->path
+8);
277 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
279 char *sysdev
= xstrdup(mdi
->sys_name
+ 1);
282 path
= map_dev(mdi
->disk
.major
,
284 for (cp
= sysdev
; *cp
; cp
++)
288 if (mdi
->disk
.raid_disk
>= 0)
289 printf("MD_DEVICE_%s_ROLE=%d\n",
291 mdi
->disk
.raid_disk
);
293 printf("MD_DEVICE_%s_ROLE=spare\n",
296 printf("MD_DEVICE_%s_DEV=%s\n",
303 disks
= xmalloc(max_disks
* 2 * sizeof(mdu_disk_info_t
));
304 for (d
= 0; d
< max_disks
* 2; d
++) {
305 disks
[d
].state
= (1 << MD_DISK_REMOVED
);
306 disks
[d
].major
= disks
[d
].minor
= 0;
307 disks
[d
].number
= -1;
308 disks
[d
].raid_disk
= d
/ 2;
311 next
= array
.raid_disks
* 2;
315 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
316 disks
[next
++] = mdi
->disk
;
317 disks
[next
- 1].number
= -1;
319 } else for (d
= 0; d
< max_disks
; d
++) {
320 mdu_disk_info_t disk
;
322 if (md_get_disk_info(fd
, &disk
) < 0) {
323 if (d
< array
.raid_disks
)
324 pr_err("cannot get device detail for device %d: %s\n",
328 if (disk
.major
== 0 && disk
.minor
== 0)
330 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
&&
331 disks
[disk
.raid_disk
* 2].state
== (1 << MD_DISK_REMOVED
) &&
332 ((disk
.state
& (1 << MD_DISK_JOURNAL
)) == 0))
333 disks
[disk
.raid_disk
* 2] = disk
;
334 else if (disk
.raid_disk
>= 0 &&
335 disk
.raid_disk
< array
.raid_disks
&&
336 disks
[disk
.raid_disk
* 2 + 1].state
==
337 (1 << MD_DISK_REMOVED
) &&
338 !(disk
.state
& (1 << MD_DISK_JOURNAL
)))
339 disks
[disk
.raid_disk
* 2 + 1] = disk
;
340 else if (next
< max_disks
* 2)
341 disks
[next
++] = disk
;
344 avail
= xcalloc(array
.raid_disks
, 1);
346 for (d
= 0; d
< array
.raid_disks
; d
++) {
348 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
349 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
357 mdu_bitmap_file_t bmf
;
358 printf("%sARRAY %s", inactive
? "INACTIVE-":"", dev
);
359 if (c
->verbose
> 0) {
360 if (array
.raid_disks
)
361 printf(" level=%s num-devices=%d",
362 str
? str
: "-unknown-",
365 printf(" level=container num-devices=%d",
368 printf(" num-devices=%d", array
.nr_disks
);
371 printf(" container=%s", container
);
372 printf(" member=%s", member
);
374 if (sra
&& sra
->array
.major_version
< 0)
375 printf(" metadata=%s", sra
->text_version
);
377 printf(" metadata=%d.%d", array
.major_version
,
378 array
.minor_version
);
381 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
382 if (ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 && bmf
.pathname
[0]) {
383 printf(" bitmap=%s", bmf
.pathname
);
386 mdu_bitmap_file_t bmf
;
387 unsigned long long larray_size
;
388 struct mdstat_ent
*ms
= mdstat_read(0, 0);
389 struct mdstat_ent
*e
;
392 devnm
= stat2devnm(&stb
);
393 for (e
= ms
; e
; e
= e
->next
)
394 if (strcmp(e
->devnm
, devnm
) == 0)
396 if (!get_dev_size(fd
, NULL
, &larray_size
))
399 printf("%s:\n", dev
);
402 printf(" Container : %s, member %s\n",
405 if (sra
&& sra
->array
.major_version
< 0)
406 printf(" Version : %s\n",
409 printf(" Version : %d.%d\n",
411 array
.minor_version
);
416 printf(" Creation Time : %.24s\n", ctime(&atime
));
417 if (array
.raid_disks
== 0 && external
)
420 printf(" Raid Level : %s\n", str
);
422 printf(" Array Size : %llu%s\n",
424 human_size(larray_size
));
425 if (array
.level
>= 1) {
427 array
.major_version
= sra
->array
.major_version
;
428 if (array
.major_version
!= 0 &&
429 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
430 unsigned long long dsize
;
432 dsize
= get_component_size(fd
);
434 printf(" Used Dev Size : %llu%s\n",
436 human_size((long long)dsize
<<9));
438 printf(" Used Dev Size : unknown\n");
440 printf(" Used Dev Size : %lu%s\n",
441 (unsigned long)array
.size
,
442 human_size((unsigned long long)
445 if (array
.raid_disks
)
446 printf(" Raid Devices : %d\n", array
.raid_disks
);
447 printf(" Total Devices : %d\n", array
.nr_disks
);
449 ((sra
== NULL
&& array
.major_version
== 0) ||
450 (sra
&& sra
->array
.major_version
== 0)))
451 printf(" Preferred Minor : %d\n", array
.md_minor
);
452 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
453 printf(" Persistence : Superblock is %spersistent\n",
454 array
.not_persistent
? "not " : "");
456 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
457 if (ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 && bmf
.pathname
[0]) {
458 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
460 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
461 printf(" Intent Bitmap : Internal\n\n");
464 printf(" Update Time : %.24s\n", ctime(&atime
));
465 if (array
.raid_disks
) {
466 static char *sync_action
[] = {
467 ", recovering", ", resyncing",
468 ", reshaping", ", checking" };
470 if (avail_disks
== array
.raid_disks
)
472 else if (!enough(array
.level
, array
.raid_disks
,
473 array
.layout
, 1, avail
))
478 printf(" State : %s%s%s%s%s%s \n",
479 (array
.state
& (1 << MD_SB_CLEAN
)) ?
480 "clean" : "active", st
,
481 (!e
|| (e
->percent
< 0 &&
482 e
->percent
!= RESYNC_PENDING
&&
483 e
->percent
!= RESYNC_DELAYED
)) ?
484 "" : sync_action
[e
->resync
],
485 larray_size
? "": ", Not Started",
486 (e
&& e
->percent
== RESYNC_DELAYED
) ?
488 (e
&& e
->percent
== RESYNC_PENDING
) ?
490 } else if (inactive
) {
491 printf(" State : inactive\n");
493 if (array
.raid_disks
)
494 printf(" Active Devices : %d\n", array
.active_disks
);
495 if (array
.working_disks
> 0)
496 printf(" Working Devices : %d\n",
497 array
.working_disks
);
498 if (array
.raid_disks
) {
499 printf(" Failed Devices : %d\n", array
.failed_disks
);
500 printf(" Spare Devices : %d\n", array
.spare_disks
);
503 if (array
.level
== 5) {
504 str
= map_num(r5layout
, array
.layout
);
505 printf(" Layout : %s\n",
506 str
? str
: "-unknown-");
508 if (array
.level
== 6) {
509 str
= map_num(r6layout
, array
.layout
);
510 printf(" Layout : %s\n",
511 str
? str
: "-unknown-");
513 if (array
.level
== 10) {
515 print_r10_layout(array
.layout
);
518 switch (array
.level
) {
524 if (array
.chunk_size
)
525 printf(" Chunk Size : %dK\n\n",
526 array
.chunk_size
/1024);
529 printf(" Rounding : %dK\n\n",
530 array
.chunk_size
/1024);
536 if (array
.raid_disks
) {
539 mdi
= sysfs_read(fd
, NULL
, GET_CONSISTENCY_POLICY
);
541 char *policy
= map_num(consistency_policies
,
542 mdi
->consistency_policy
);
545 printf("Consistency Policy : %s\n\n",
550 if (e
&& e
->percent
>= 0) {
551 static char *sync_action
[] = {
552 "Rebuild", "Resync", "Reshape", "Check"};
553 printf(" %7s Status : %d%% complete\n",
554 sync_action
[e
->resync
], e
->percent
);
558 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
560 This is pretty boring
561 printf(" Reshape pos'n : %llu%s\n",
562 (unsigned long long) info
->reshape_progress
<< 9,
563 human_size((unsigned long long)
564 info
->reshape_progress
<< 9));
566 if (info
->delta_disks
!= 0)
567 printf(" Delta Devices : %d, (%d->%d)\n",
569 array
.raid_disks
- info
->delta_disks
,
571 if (info
->new_level
!= array
.level
) {
572 str
= map_num(pers
, info
->new_level
);
573 printf(" New Level : %s\n",
574 str
? str
: "-unknown-");
576 if (info
->new_level
!= array
.level
||
577 info
->new_layout
!= array
.layout
) {
578 if (info
->new_level
== 5) {
579 str
= map_num(r5layout
,
581 printf(" New Layout : %s\n",
582 str
? str
: "-unknown-");
584 if (info
->new_level
== 6) {
585 str
= map_num(r6layout
,
587 printf(" New Layout : %s\n",
588 str
? str
: "-unknown-");
590 if (info
->new_level
== 10) {
591 printf(" New Layout : near=%d, %s=%d\n",
592 info
->new_layout
& 255,
593 (info
->new_layout
& 0x10000) ?
595 (info
->new_layout
>> 8) & 255);
598 if (info
->new_chunk
!= array
.chunk_size
)
599 printf(" New Chunksize : %dK\n",
600 info
->new_chunk
/1024);
602 } else if (e
&& e
->percent
>= 0)
605 st
->ss
->detail_super(st
, c
->homehost
);
607 if (array
.raid_disks
== 0 && sra
&&
608 sra
->array
.major_version
== -1 &&
609 sra
->array
.minor_version
== -2 &&
610 sra
->text_version
[0] != '/') {
611 /* This looks like a container. Find any active arrays
612 * That claim to be a member.
614 DIR *dir
= opendir("/sys/block");
617 printf(" Member Arrays :");
619 while (dir
&& (de
= readdir(dir
)) != NULL
) {
622 int nlen
= strlen(sra
->sys_name
);
624 if (de
->d_name
[0] == '.')
627 "/sys/block/%s/md/metadata_version",
629 if (load_sys(path
, vbuf
, sizeof(vbuf
)) < 0)
631 if (strncmp(vbuf
, "external:", 9) ||
632 !is_subarray(vbuf
+ 9) ||
633 strncmp(vbuf
+ 10, sra
->sys_name
, nlen
) ||
634 vbuf
[10 + nlen
] != '/')
636 devid
= devnm2devid(de
->d_name
);
638 map_dev_preferred(major(devid
),
647 if (array
.raid_disks
)
648 printf(" Number Major Minor RaidDevice State\n");
650 printf(" Number Major Minor RaidDevice\n");
654 for (d
= 0; d
< max_disks
* 2; d
++) {
656 mdu_disk_info_t disk
= disks
[d
];
658 if (d
>= array
.raid_disks
* 2 &&
659 disk
.major
== 0 && disk
.minor
== 0)
661 if ((d
& 1) && disk
.major
== 0 && disk
.minor
== 0)
664 if (d
== array
.raid_disks
*2)
666 if (disk
.number
< 0 && disk
.raid_disk
< 0)
667 printf(" - %5d %5d - ",
668 disk
.major
, disk
.minor
);
669 else if (disk
.raid_disk
< 0 ||
670 disk
.state
& (1 << MD_DISK_JOURNAL
))
671 printf(" %5d %5d %5d - ",
672 disk
.number
, disk
.major
, disk
.minor
);
673 else if (disk
.number
< 0)
674 printf(" - %5d %5d %5d ",
675 disk
.major
, disk
.minor
, disk
.raid_disk
);
677 printf(" %5d %5d %5d %5d ",
678 disk
.number
, disk
.major
, disk
.minor
,
681 if (!c
->brief
&& array
.raid_disks
) {
682 if (disk
.state
& (1 << MD_DISK_FAULTY
)) {
684 if (disk
.raid_disk
< array
.raid_disks
&&
688 if (disk
.state
& (1 << MD_DISK_ACTIVE
))
690 if (disk
.state
& (1 << MD_DISK_SYNC
)) {
692 if (array
.level
== 10 &&
693 (array
.layout
& ~0x1FFFF) == 0) {
694 int nc
= array
.layout
& 0xff;
695 int fc
= (array
.layout
>> 8) & 0xff;
698 array
.raid_disks
% copies
== 0 &&
700 /* We can divide the devices
703 set
= disk
.raid_disk
% copies
;
704 printf(" set-%c", set
+ 'A');
708 if (disk
.state
& (1 << MD_DISK_REMOVED
))
710 if (disk
.state
& (1 << MD_DISK_WRITEMOSTLY
))
711 printf(" writemostly");
712 if (disk
.state
& (1 << MD_DISK_FAILFAST
))
714 if (disk
.state
& (1 << MD_DISK_JOURNAL
))
717 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)
718 |(1<<MD_DISK_REMOVED
)|(1<<MD_DISK_FAULTY
)|(1<<MD_DISK_JOURNAL
)))
721 if (disk
.raid_disk
< array
.raid_disks
&&
723 printf(" rebuilding");
728 dv
= map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
731 n_devices
= add_device(dv
, &devices
,
732 &max_devices
, n_devices
);
739 if (spares
&& c
->brief
&& array
.raid_disks
)
740 printf(" spares=%d", spares
);
741 if (c
->brief
&& st
&& st
->sb
)
742 st
->ss
->brief_detail_super(st
);
744 st
->ss
->free_super(st
);
746 if (c
->brief
&& c
->verbose
> 0 && devices
) {
747 qsort(devices
, n_devices
, sizeof(*devices
), cmpstringp
);
748 printf("\n devices=%s", devices
[0]);
749 for (d
= 1; d
< n_devices
; d
++)
750 printf(",%s", devices
[d
]);
755 !enough(array
.level
, array
.raid_disks
, array
.layout
, 1, avail
))
763 for (d
= 0; d
< n_devices
; d
++)
770 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
772 /* display platform capabilities for the given metadata format
773 * 'scan' in this context means iterate over all metadata types
778 if (ss
&& export
&& ss
->export_detail_platform
)
779 err
= ss
->export_detail_platform(verbose
, controller_path
);
780 else if (ss
&& ss
->detail_platform
)
781 err
= ss
->detail_platform(verbose
, 0, controller_path
);
784 pr_err("%s metadata is platform independent\n",
785 ss
->name
? : "[no name]");
788 pr_err("specify a metadata type or --scan\n");
795 for (i
= 0; superlist
[i
]; i
++) {
796 struct superswitch
*meta
= superlist
[i
];
801 pr_err("checking metadata %s\n",
802 meta
->name
? : "[no name]");
803 if (!meta
->detail_platform
) {
805 pr_err("%s metadata is platform independent\n",
806 meta
->name
? : "[no name]");
807 } else if (export
&& meta
->export_detail_platform
) {
808 err
|= meta
->export_detail_platform(verbose
, controller_path
);
810 err
|= meta
->detail_platform(verbose
, 0, controller_path
);