]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2012 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>
30 static int cmpstringp(const void *p1
, const void *p2
)
32 return strcmp(* (char * const *) p1
, * (char * const *) p2
);
35 int Detail(char *dev
, struct context
*c
)
38 * Print out details for an md array by using
39 * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
42 int fd
= open(dev
, O_RDONLY
);
44 mdu_array_info_t array
;
45 mdu_disk_info_t
*disks
;
50 char **devices
= NULL
;
51 int max_devices
= 0, n_devices
= 0;
54 int is_26
= get_linux_version() >= 2006000;
55 int is_rebuilding
= 0;
58 char *subarray
= NULL
;
59 int max_disks
= MD_SB_DISKS
; /* just a default */
60 struct mdinfo
*info
= NULL
;
62 struct mdinfo
*subdev
;
64 char *container
= NULL
;
66 int rv
= c
->test
? 4 : 1;
73 pr_err("cannot open %s: %s\n",
74 dev
, strerror(errno
));
77 vers
= md_get_version(fd
);
79 pr_err("%s does not appear to be an md device\n",
85 pr_err("cannot get detail for md device %s: driver version too old.\n",
90 sra
= sysfs_read(fd
, NULL
, GET_VERSION
|GET_DEVS
);
91 external
= (sra
!= NULL
&& sra
->array
.major_version
== -1
92 && sra
->array
.minor_version
== -2);
93 st
= super_by_fd(fd
, &subarray
);
94 if (ioctl(fd
, GET_ARRAY_INFO
, &array
) == 0) {
96 } else if (errno
== ENODEV
) {
100 pr_err("cannot get array detail for %s: %s\n",
101 dev
, strerror(errno
));
106 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
111 max_disks
= st
->max_devs
;
114 /* This is a subarray of some container.
115 * We want the name of the container, and the member
117 int devid
= devnm2devid(st
->container_devnm
);
121 container
= map_dev_preferred(major(devid
), minor(devid
),
123 cfd
= open_dev(st
->container_devnm
);
125 err
= st
->ss
->load_container(st
, cfd
, NULL
);
128 info
= st
->ss
->container_content(st
, subarray
);
132 /* try to load a superblock. Try sra->devs first, then try ioctl */
133 if (st
&& !info
) for (d
= 0, subdev
= sra
? sra
->devs
: NULL
;
134 d
< max_disks
|| subdev
;
135 subdev
? (void)(subdev
= subdev
->next
) : (void)(d
++)){
136 mdu_disk_info_t disk
;
144 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0)
146 if (d
>= array
.raid_disks
&&
152 if (array
.raid_disks
> 0 &&
153 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
156 dv
= map_dev(disk
.major
, disk
.minor
, 1);
160 fd2
= dev_open(dv
, O_RDONLY
);
165 st
->ss
->free_super(st
);
167 err
= st
->ss
->load_super(st
, fd2
, NULL
);
174 info
= st
->ss
->container_content(st
, subarray
);
176 info
= xmalloc(sizeof(*info
));
177 st
->ss
->getinfo_super(st
, info
, NULL
);
182 if (array
.raid_disks
!= 0 && /* container */
183 (info
->array
.ctime
!= array
.ctime
||
184 info
->array
.level
!= array
.level
)) {
185 st
->ss
->free_super(st
);
188 /* some formats (imsm) have free-floating-spares
189 * with a uuid of uuid_zero, they don't
190 * have very good info about the rest of the
191 * container, so keep searching when
192 * encountering such a device. Otherwise, stop
193 * after the first successful call to
196 if (memcmp(uuid_zero
,
198 sizeof(uuid_zero
)) == 0) {
199 st
->ss
->free_super(st
);
205 /* Ok, we have some info to print... */
206 str
= map_num(pers
, array
.level
);
209 if (array
.raid_disks
) {
211 printf("MD_LEVEL=%s\n", str
);
212 printf("MD_DEVICES=%d\n", array
.raid_disks
);
215 printf("MD_LEVEL=container\n");
216 printf("MD_DEVICES=%d\n", array
.nr_disks
);
219 printf("MD_CONTAINER=%s\n", container
);
220 printf("MD_MEMBER=%s\n", member
);
222 if (sra
&& sra
->array
.major_version
< 0)
223 printf("MD_METADATA=%s\n", sra
->text_version
);
225 printf("MD_METADATA=%d.%d\n",
226 array
.major_version
, array
.minor_version
);
229 if (st
&& st
->sb
&& info
) {
231 struct map_ent
*mp
, *map
= NULL
;
233 fname_from_uuid(st
, info
, nbuf
, ':');
234 printf("MD_UUID=%s\n", nbuf
+5);
235 mp
= map_by_uuid(&map
, info
->uuid
);
236 if (mp
&& mp
->path
&&
237 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
238 printf("MD_DEVNAME=");
239 print_escape(mp
->path
+8);
243 if (st
->ss
->export_detail_super
)
244 st
->ss
->export_detail_super(st
);
246 struct map_ent
*mp
, *map
= NULL
;
248 mp
= map_by_devnm(&map
, fd2devnm(fd
));
250 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
251 printf("MD_UUID=%s\n", nbuf
+5);
253 if (mp
&& mp
->path
&&
254 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
255 printf("MD_DEVNAME=");
256 print_escape(mp
->path
+8);
262 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
264 map_dev(mdi
->disk
.major
,
267 if (mdi
->disk
.raid_disk
>= 0)
268 printf("MD_DEVICE_%s_ROLE=%d\n",
270 mdi
->disk
.raid_disk
);
272 printf("MD_DEVICE_%s_ROLE=spare\n",
275 printf("MD_DEVICE_%s_DEV=%s\n",
276 mdi
->sys_name
+4, path
);
282 disks
= xmalloc(max_disks
* sizeof(mdu_disk_info_t
));
283 for (d
= 0; d
< max_disks
; d
++) {
284 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
285 disks
[d
].major
= disks
[d
].minor
= 0;
286 disks
[d
].number
= disks
[d
].raid_disk
= d
;
289 next
= array
.raid_disks
*2;
293 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
294 disks
[next
++] = mdi
->disk
;
295 disks
[next
-1].number
= -1;
297 } else for (d
= 0; d
< max_disks
; d
++) {
298 mdu_disk_info_t disk
;
300 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
301 if (d
< array
.raid_disks
)
302 pr_err("cannot get device detail for device %d: %s\n",
306 if (disk
.major
== 0 && disk
.minor
== 0)
308 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
309 && disks
[disk
.raid_disk
*2].state
== (1<<MD_DISK_REMOVED
))
310 disks
[disk
.raid_disk
*2] = disk
;
311 else if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
312 && disks
[disk
.raid_disk
*2+1].state
== (1<<MD_DISK_REMOVED
))
313 disks
[disk
.raid_disk
*2+1] = disk
;
314 else if (next
< max_disks
)
315 disks
[next
++] = disk
;
318 avail
= xcalloc(array
.raid_disks
, 1);
320 for (d
= 0; d
< array
.raid_disks
; d
++) {
322 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
323 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
330 mdu_bitmap_file_t bmf
;
331 printf("%sARRAY %s", inactive
? "INACTIVE-":"", dev
);
332 if (c
->verbose
> 0) {
333 if (array
.raid_disks
)
334 printf(" level=%s num-devices=%d",
338 printf(" level=container num-devices=%d",
341 printf(" num-devices=%d", array
.nr_disks
);
344 printf(" container=%s", container
);
345 printf(" member=%s", member
);
347 if (sra
&& sra
->array
.major_version
< 0)
348 printf(" metadata=%s", sra
->text_version
);
350 printf(" metadata=%d.%d",
351 array
.major_version
, array
.minor_version
);
354 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
356 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
358 printf(" bitmap=%s", bmf
.pathname
);
361 mdu_bitmap_file_t bmf
;
362 unsigned long long larray_size
;
363 struct mdstat_ent
*ms
= mdstat_read(0, 0);
364 struct mdstat_ent
*e
;
367 devnm
= stat2devnm(&stb
);
368 for (e
=ms
; e
; e
=e
->next
)
369 if (strcmp(e
->devnm
, devnm
) == 0)
371 if (!get_dev_size(fd
, NULL
, &larray_size
))
374 printf("%s:\n", dev
);
377 printf(" Container : %s, member %s\n", container
, member
);
379 if (sra
&& sra
->array
.major_version
< 0)
380 printf(" Version : %s\n", sra
->text_version
);
382 printf(" Version : %d.%d\n",
383 array
.major_version
, array
.minor_version
);
388 printf(" Creation Time : %.24s\n", ctime(&atime
));
389 if (array
.raid_disks
== 0 && external
)
392 printf(" Raid Level : %s\n", str
);
394 printf(" Array Size : %llu%s\n", (larray_size
>>10),
395 human_size(larray_size
));
396 if (array
.level
>= 1) {
398 array
.major_version
= sra
->array
.major_version
;
399 if (array
.major_version
!= 0 &&
400 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
401 unsigned long long dsize
= get_component_size(fd
);
403 printf(" Used Dev Size : %llu%s\n",
405 human_size((long long)dsize
<<9));
407 printf(" Used Dev Size : unknown\n");
409 printf(" Used Dev Size : %d%s\n", array
.size
,
410 human_size((long long)array
.size
<<10));
412 if (array
.raid_disks
)
413 printf(" Raid Devices : %d\n", array
.raid_disks
);
414 printf(" Total Devices : %d\n", array
.nr_disks
);
416 ((sra
== NULL
&& array
.major_version
== 0) ||
417 (sra
&& sra
->array
.major_version
== 0)))
418 printf("Preferred Minor : %d\n", array
.md_minor
);
419 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
420 printf(" Persistence : Superblock is %spersistent\n",
421 array
.not_persistent
?"not ":"");
423 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
425 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
427 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
429 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
430 printf(" Intent Bitmap : Internal\n\n");
433 printf(" Update Time : %.24s\n", ctime(&atime
));
434 if (array
.raid_disks
) {
435 static char *sync_action
[] = {
436 ", recovering", ", resyncing",
437 ", reshaping", ", checking" };
439 if (avail_disks
== array
.raid_disks
)
441 else if (!enough(array
.level
, array
.raid_disks
,
442 array
.layout
, 1, avail
))
447 printf(" State : %s%s%s%s%s%s \n",
448 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active", st
,
449 (!e
|| (e
->percent
< 0 && e
->percent
!= RESYNC_PENDING
&&
450 e
->percent
!= RESYNC_DELAYED
)) ? "" : sync_action
[e
->resync
],
451 larray_size
? "": ", Not Started",
452 e
->percent
== RESYNC_DELAYED
? " (DELAYED)": "",
453 e
->percent
== RESYNC_PENDING
? " (PENDING)": "");
454 } else if (inactive
) {
455 printf(" State : inactive\n");
457 if (array
.raid_disks
)
458 printf(" Active Devices : %d\n", array
.active_disks
);
459 if (array
.working_disks
> 0)
460 printf("Working Devices : %d\n", array
.working_disks
);
461 if (array
.raid_disks
) {
462 printf(" Failed Devices : %d\n", array
.failed_disks
);
463 printf(" Spare Devices : %d\n", array
.spare_disks
);
466 if (array
.level
== 5) {
467 str
= map_num(r5layout
, array
.layout
);
468 printf(" Layout : %s\n", str
?str
:"-unknown-");
470 if (array
.level
== 6) {
471 str
= map_num(r6layout
, array
.layout
);
472 printf(" Layout : %s\n", str
?str
:"-unknown-");
474 if (array
.level
== 10) {
476 print_r10_layout(array
.layout
);
479 switch (array
.level
) {
485 if (array
.chunk_size
)
486 printf(" Chunk Size : %dK\n\n",
487 array
.chunk_size
/1024);
490 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
495 if (e
&& e
->percent
>= 0) {
496 static char *sync_action
[] = {
499 printf(" %7s Status : %d%% complete\n", sync_action
[e
->resync
], e
->percent
);
504 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
506 This is pretty boring
507 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
->reshape_progress
<<9,
508 human_size((unsigned long long)info
->reshape_progress
<<9));
510 if (info
->delta_disks
!= 0)
511 printf(" Delta Devices : %d, (%d->%d)\n",
513 array
.raid_disks
- info
->delta_disks
,
515 if (info
->new_level
!= array
.level
) {
516 str
= map_num(pers
, info
->new_level
);
517 printf(" New Level : %s\n", str
?str
:"-unknown-");
519 if (info
->new_level
!= array
.level
||
520 info
->new_layout
!= array
.layout
) {
521 if (info
->new_level
== 5) {
522 str
= map_num(r5layout
, info
->new_layout
);
523 printf(" New Layout : %s\n",
524 str
?str
:"-unknown-");
526 if (info
->new_level
== 6) {
527 str
= map_num(r6layout
, info
->new_layout
);
528 printf(" New Layout : %s\n",
529 str
?str
:"-unknown-");
531 if (info
->new_level
== 10) {
532 printf(" New Layout : near=%d, %s=%d\n",
533 info
->new_layout
&255,
534 (info
->new_layout
&0x10000)?"offset":"far",
535 (info
->new_layout
>>8)&255);
538 if (info
->new_chunk
!= array
.chunk_size
)
539 printf(" New Chunksize : %dK\n", info
->new_chunk
/1024);
541 } else if (e
&& e
->percent
>= 0)
544 st
->ss
->detail_super(st
, c
->homehost
);
546 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
547 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
548 /* This looks like a container. Find any active arrays
549 * That claim to be a member.
551 DIR *dir
= opendir("/sys/block");
554 printf(" Member Arrays :");
556 while (dir
&& (de
= readdir(dir
)) != NULL
) {
559 int nlen
= strlen(sra
->sys_name
);
561 if (de
->d_name
[0] == '.')
563 sprintf(path
, "/sys/block/%s/md/metadata_version",
565 if (load_sys(path
, vbuf
) < 0)
567 if (strncmp(vbuf
, "external:", 9) != 0 ||
568 !is_subarray(vbuf
+9) ||
569 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
570 vbuf
[10+nlen
] != '/')
572 devid
= devnm2devid(de
->d_name
);
573 printf(" %s", map_dev_preferred(
575 minor(devid
), 1, c
->prefer
));
582 if (array
.raid_disks
)
583 printf(" Number Major Minor RaidDevice State\n");
585 printf(" Number Major Minor RaidDevice\n");
589 for (d
= 0; d
< max_disks
; d
++) {
591 mdu_disk_info_t disk
= disks
[d
];
593 if (d
>= array
.raid_disks
*2 &&
602 if (d
== array
.raid_disks
*2) printf("\n");
604 printf(" - %5d %5d - ",
605 disk
.major
, disk
.minor
);
606 else if (disk
.raid_disk
< 0)
607 printf(" %5d %5d %5d - ",
608 disk
.number
, disk
.major
, disk
.minor
);
610 printf(" %5d %5d %5d %5d ",
611 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
613 if (!c
->brief
&& array
.raid_disks
) {
615 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
617 if (disk
.raid_disk
< array
.raid_disks
&&
621 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
622 if (disk
.state
& (1<<MD_DISK_SYNC
)) {
624 if (array
.level
== 10 && (array
.layout
& ~0x1FFFF) == 0) {
625 int nc
= array
.layout
& 0xff;
626 int fc
= (array
.layout
>> 8) & 0xff;
628 if (fc
== 1 && array
.raid_disks
% copies
== 0 && copies
<= 26) {
629 /* We can divide the devices into 'sets' */
630 int set
= disk
.raid_disk
% copies
;
631 printf(" set-%c", set
+ 'A');
635 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
636 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
638 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)
639 |(1<<MD_DISK_REMOVED
)|(1<<MD_DISK_FAULTY
)))
643 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
644 printf(" rebuilding");
645 } else if (is_rebuilding
&& failed
) {
646 /* Taking a bit of a risk here, we remove the
647 * device from the array, and then put it back.
648 * If this fails, we are rebuilding
650 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
651 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
652 if (err
&& errno
== EBUSY
)
653 printf(" rebuilding");
657 if (disk
.state
== 0) spares
++;
658 if (c
->test
&& d
< array
.raid_disks
659 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
661 dv
=map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
664 if (n_devices
+ 1 >= max_devices
) {
666 devices
= xrealloc(devices
, max_devices
671 devices
[n_devices
] = xstrdup(dv
);
676 if (!c
->brief
) printf("\n");
678 if (spares
&& c
->brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
679 if (c
->brief
&& st
&& st
->sb
)
680 st
->ss
->brief_detail_super(st
);
682 st
->ss
->free_super(st
);
684 if (c
->brief
&& c
->verbose
> 0 && devices
) {
685 qsort(devices
, n_devices
, sizeof(*devices
), cmpstringp
);
686 printf("\n devices=%s", devices
[0]);
687 for (d
= 1; d
< n_devices
; d
++)
688 printf(",%s", devices
[d
]);
693 !enough(array
.level
, array
.raid_disks
, array
.layout
,
702 for (d
= 0; d
< n_devices
; d
++)
709 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
711 /* display platform capabilities for the given metadata format
712 * 'scan' in this context means iterate over all metadata types
717 if (ss
&& export
&& ss
->export_detail_platform
)
718 err
= ss
->export_detail_platform(verbose
, controller_path
);
719 else if (ss
&& ss
->detail_platform
)
720 err
= ss
->detail_platform(verbose
, 0, controller_path
);
723 pr_err("%s metadata is platform independent\n",
724 ss
->name
? : "[no name]");
727 pr_err("specify a metadata type or --scan\n");
734 for (i
= 0; superlist
[i
]; i
++) {
735 struct superswitch
*meta
= superlist
[i
];
740 pr_err("checking metadata %s\n",
741 meta
->name
? : "[no name]");
742 if (!meta
->detail_platform
) {
744 pr_err("%s metadata is platform independent\n",
745 meta
->name
? : "[no name]");
746 } else if (export
&& meta
->export_detail_platform
) {
747 err
|= meta
->export_detail_platform(verbose
, controller_path
);
749 err
|= meta
->detail_platform(verbose
, 0, controller_path
);