]>
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 int Detail(char *dev
, struct context
*c
)
33 * Print out details for an md array by using
34 * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
37 int fd
= open(dev
, O_RDONLY
);
39 mdu_array_info_t array
;
40 mdu_disk_info_t
*disks
;
48 int is_26
= get_linux_version() >= 2006000;
49 int is_rebuilding
= 0;
52 char *subarray
= NULL
;
53 int max_disks
= MD_SB_DISKS
; /* just a default */
54 struct mdinfo
*info
= NULL
;
56 struct mdinfo
*subdev
;
58 char *container
= NULL
;
60 int rv
= c
->test
? 4 : 1;
67 pr_err("cannot open %s: %s\n",
68 dev
, strerror(errno
));
71 vers
= md_get_version(fd
);
73 pr_err("%s does not appear to be an md device\n",
79 pr_err("cannot get detail for md device %s: driver version too old.\n",
84 sra
= sysfs_read(fd
, NULL
, GET_VERSION
|GET_DEVS
);
85 external
= (sra
!= NULL
&& sra
->array
.major_version
== -1
86 && sra
->array
.minor_version
== -2);
87 st
= super_by_fd(fd
, &subarray
);
88 if (ioctl(fd
, GET_ARRAY_INFO
, &array
) == 0) {
90 } else if (errno
== ENODEV
) {
94 pr_err("cannot get array detail for %s: %s\n",
95 dev
, strerror(errno
));
100 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
105 max_disks
= st
->max_devs
;
108 /* This is a subarray of some container.
109 * We want the name of the container, and the member
111 int devid
= devnm2devid(st
->container_devnm
);
115 container
= map_dev_preferred(major(devid
), minor(devid
),
117 cfd
= open_dev(st
->container_devnm
);
119 err
= st
->ss
->load_container(st
, cfd
, NULL
);
122 info
= st
->ss
->container_content(st
, subarray
);
126 /* try to load a superblock. Try sra->devs first, then try ioctl */
127 if (st
&& !info
) for (d
= 0, subdev
= sra
? sra
->devs
: NULL
;
128 d
< max_disks
|| subdev
;
129 subdev
? (void)(subdev
= subdev
->next
) : (void)(d
++)){
130 mdu_disk_info_t disk
;
138 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0)
140 if (d
>= array
.raid_disks
&&
146 if (array
.raid_disks
> 0 &&
147 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
150 dv
= map_dev(disk
.major
, disk
.minor
, 1);
154 fd2
= dev_open(dv
, O_RDONLY
);
159 st
->ss
->free_super(st
);
161 err
= st
->ss
->load_super(st
, fd2
, NULL
);
168 info
= st
->ss
->container_content(st
, subarray
);
170 info
= xmalloc(sizeof(*info
));
171 st
->ss
->getinfo_super(st
, info
, NULL
);
176 if (array
.raid_disks
!= 0 && /* container */
177 (info
->array
.ctime
!= array
.ctime
||
178 info
->array
.level
!= array
.level
)) {
179 st
->ss
->free_super(st
);
182 /* some formats (imsm) have free-floating-spares
183 * with a uuid of uuid_zero, they don't
184 * have very good info about the rest of the
185 * container, so keep searching when
186 * encountering such a device. Otherwise, stop
187 * after the first successful call to
190 if (memcmp(uuid_zero
,
192 sizeof(uuid_zero
)) == 0) {
193 st
->ss
->free_super(st
);
199 /* Ok, we have some info to print... */
200 str
= map_num(pers
, array
.level
);
203 if (array
.raid_disks
) {
205 printf("MD_LEVEL=%s\n", str
);
206 printf("MD_DEVICES=%d\n", array
.raid_disks
);
209 printf("MD_LEVEL=container\n");
210 printf("MD_DEVICES=%d\n", array
.nr_disks
);
213 printf("MD_CONTAINER=%s\n", container
);
214 printf("MD_MEMBER=%s\n", member
);
216 if (sra
&& sra
->array
.major_version
< 0)
217 printf("MD_METADATA=%s\n", sra
->text_version
);
219 printf("MD_METADATA=%d.%d\n",
220 array
.major_version
, array
.minor_version
);
223 if (st
&& st
->sb
&& info
) {
225 struct map_ent
*mp
, *map
= NULL
;
227 fname_from_uuid(st
, info
, nbuf
, ':');
228 printf("MD_UUID=%s\n", nbuf
+5);
229 mp
= map_by_uuid(&map
, info
->uuid
);
230 if (mp
&& mp
->path
&&
231 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
232 printf("MD_DEVNAME=");
233 print_escape(mp
->path
+8);
237 if (st
->ss
->export_detail_super
)
238 st
->ss
->export_detail_super(st
);
240 struct map_ent
*mp
, *map
= NULL
;
242 mp
= map_by_devnm(&map
, fd2devnm(fd
));
244 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
245 printf("MD_UUID=%s\n", nbuf
+5);
247 if (mp
&& mp
->path
&&
248 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
249 printf("MD_DEVNAME=");
250 print_escape(mp
->path
+8);
257 disks
= xmalloc(max_disks
* sizeof(mdu_disk_info_t
));
258 for (d
= 0; d
< max_disks
; d
++) {
259 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
260 disks
[d
].major
= disks
[d
].minor
= 0;
261 disks
[d
].number
= disks
[d
].raid_disk
= d
;
264 next
= array
.raid_disks
*2;
268 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
269 disks
[next
++] = mdi
->disk
;
270 disks
[next
-1].number
= -1;
272 } else for (d
= 0; d
< max_disks
; d
++) {
273 mdu_disk_info_t disk
;
275 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
276 if (d
< array
.raid_disks
)
277 pr_err("cannot get device detail for device %d: %s\n",
281 if (disk
.major
== 0 && disk
.minor
== 0)
283 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
284 && disks
[disk
.raid_disk
*2].state
== (1<<MD_DISK_REMOVED
))
285 disks
[disk
.raid_disk
*2] = disk
;
286 else if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
287 && disks
[disk
.raid_disk
*2+1].state
== (1<<MD_DISK_REMOVED
))
288 disks
[disk
.raid_disk
*2+1] = disk
;
289 else if (next
< max_disks
)
290 disks
[next
++] = disk
;
293 avail
= xcalloc(array
.raid_disks
, 1);
295 for (d
= 0; d
< array
.raid_disks
; d
++) {
297 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
298 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
305 mdu_bitmap_file_t bmf
;
306 printf("%sARRAY %s", inactive
? "INACTIVE-":"", dev
);
307 if (c
->verbose
> 0) {
308 if (array
.raid_disks
)
309 printf(" level=%s num-devices=%d",
313 printf(" level=container num-devices=%d",
316 printf(" num-devices=%d", array
.nr_disks
);
319 printf(" container=%s", container
);
320 printf(" member=%s", member
);
322 if (sra
&& sra
->array
.major_version
< 0)
323 printf(" metadata=%s", sra
->text_version
);
325 printf(" metadata=%d.%d",
326 array
.major_version
, array
.minor_version
);
329 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
331 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
333 printf(" bitmap=%s", bmf
.pathname
);
336 mdu_bitmap_file_t bmf
;
337 unsigned long long larray_size
;
338 struct mdstat_ent
*ms
= mdstat_read(0, 0);
339 struct mdstat_ent
*e
;
342 devnm
= stat2devnm(&stb
);
343 for (e
=ms
; e
; e
=e
->next
)
344 if (strcmp(e
->devnm
, devnm
) == 0)
346 if (!get_dev_size(fd
, NULL
, &larray_size
))
349 printf("%s:\n", dev
);
352 printf(" Container : %s, member %s\n", container
, member
);
354 if (sra
&& sra
->array
.major_version
< 0)
355 printf(" Version : %s\n", sra
->text_version
);
357 printf(" Version : %d.%d\n",
358 array
.major_version
, array
.minor_version
);
363 printf(" Creation Time : %.24s\n", ctime(&atime
));
364 if (array
.raid_disks
== 0 && external
)
367 printf(" Raid Level : %s\n", str
);
369 printf(" Array Size : %llu%s\n", (larray_size
>>10),
370 human_size(larray_size
));
371 if (array
.level
>= 1) {
373 array
.major_version
= sra
->array
.major_version
;
374 if (array
.major_version
!= 0 &&
375 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
376 unsigned long long dsize
= get_component_size(fd
);
378 printf(" Used Dev Size : %llu%s\n",
380 human_size((long long)dsize
<<9));
382 printf(" Used Dev Size : unknown\n");
384 printf(" Used Dev Size : %d%s\n", array
.size
,
385 human_size((long long)array
.size
<<10));
387 if (array
.raid_disks
)
388 printf(" Raid Devices : %d\n", array
.raid_disks
);
389 printf(" Total Devices : %d\n", array
.nr_disks
);
391 ((sra
== NULL
&& array
.major_version
== 0) ||
392 (sra
&& sra
->array
.major_version
== 0)))
393 printf("Preferred Minor : %d\n", array
.md_minor
);
394 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
395 printf(" Persistence : Superblock is %spersistent\n",
396 array
.not_persistent
?"not ":"");
398 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
400 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
402 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
404 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
405 printf(" Intent Bitmap : Internal\n\n");
408 printf(" Update Time : %.24s\n", ctime(&atime
));
409 if (array
.raid_disks
) {
410 static char *sync_action
[] = {
411 ", recovering", ", resyncing",
412 ", reshaping", ", checking" };
414 if (avail_disks
== array
.raid_disks
)
416 else if (!enough(array
.level
, array
.raid_disks
,
417 array
.layout
, 1, avail
))
422 printf(" State : %s%s%s%s%s%s \n",
423 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active", st
,
424 (!e
|| (e
->percent
< 0 && e
->percent
!= RESYNC_PENDING
&&
425 e
->percent
!= RESYNC_DELAYED
)) ? "" : sync_action
[e
->resync
],
426 larray_size
? "": ", Not Started",
427 e
->percent
== RESYNC_DELAYED
? " (DELAYED)": "",
428 e
->percent
== RESYNC_PENDING
? " (PENDING)": "");
429 } else if (inactive
) {
430 printf(" State : inactive\n");
432 if (array
.raid_disks
)
433 printf(" Active Devices : %d\n", array
.active_disks
);
434 if (array
.working_disks
> 0)
435 printf("Working Devices : %d\n", array
.working_disks
);
436 if (array
.raid_disks
) {
437 printf(" Failed Devices : %d\n", array
.failed_disks
);
438 printf(" Spare Devices : %d\n", array
.spare_disks
);
441 if (array
.level
== 5) {
442 str
= map_num(r5layout
, array
.layout
);
443 printf(" Layout : %s\n", str
?str
:"-unknown-");
445 if (array
.level
== 6) {
446 str
= map_num(r6layout
, array
.layout
);
447 printf(" Layout : %s\n", str
?str
:"-unknown-");
449 if (array
.level
== 10) {
451 print_r10_layout(array
.layout
);
454 switch (array
.level
) {
460 if (array
.chunk_size
)
461 printf(" Chunk Size : %dK\n\n",
462 array
.chunk_size
/1024);
465 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
470 if (e
&& e
->percent
>= 0) {
471 static char *sync_action
[] = {
474 printf(" %7s Status : %d%% complete\n", sync_action
[e
->resync
], e
->percent
);
479 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
481 This is pretty boring
482 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
->reshape_progress
<<9,
483 human_size((unsigned long long)info
->reshape_progress
<<9));
485 if (info
->delta_disks
!= 0)
486 printf(" Delta Devices : %d, (%d->%d)\n",
488 array
.raid_disks
- info
->delta_disks
,
490 if (info
->new_level
!= array
.level
) {
491 str
= map_num(pers
, info
->new_level
);
492 printf(" New Level : %s\n", str
?str
:"-unknown-");
494 if (info
->new_level
!= array
.level
||
495 info
->new_layout
!= array
.layout
) {
496 if (info
->new_level
== 5) {
497 str
= map_num(r5layout
, info
->new_layout
);
498 printf(" New Layout : %s\n",
499 str
?str
:"-unknown-");
501 if (info
->new_level
== 6) {
502 str
= map_num(r6layout
, info
->new_layout
);
503 printf(" New Layout : %s\n",
504 str
?str
:"-unknown-");
506 if (info
->new_level
== 10) {
507 printf(" New Layout : near=%d, %s=%d\n",
508 info
->new_layout
&255,
509 (info
->new_layout
&0x10000)?"offset":"far",
510 (info
->new_layout
>>8)&255);
513 if (info
->new_chunk
!= array
.chunk_size
)
514 printf(" New Chunksize : %dK\n", info
->new_chunk
/1024);
516 } else if (e
&& e
->percent
>= 0)
519 st
->ss
->detail_super(st
, c
->homehost
);
521 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
522 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
523 /* This looks like a container. Find any active arrays
524 * That claim to be a member.
526 DIR *dir
= opendir("/sys/block");
529 printf(" Member Arrays :");
531 while (dir
&& (de
= readdir(dir
)) != NULL
) {
534 int nlen
= strlen(sra
->sys_name
);
536 if (de
->d_name
[0] == '.')
538 sprintf(path
, "/sys/block/%s/md/metadata_version",
540 if (load_sys(path
, vbuf
) < 0)
542 if (strncmp(vbuf
, "external:", 9) != 0 ||
543 !is_subarray(vbuf
+9) ||
544 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
545 vbuf
[10+nlen
] != '/')
547 devid
= devnm2devid(de
->d_name
);
548 printf(" %s", map_dev_preferred(
550 minor(devid
), 1, c
->prefer
));
557 if (array
.raid_disks
)
558 printf(" Number Major Minor RaidDevice State\n");
560 printf(" Number Major Minor RaidDevice\n");
564 for (d
= 0; d
< max_disks
; d
++) {
566 mdu_disk_info_t disk
= disks
[d
];
568 if (d
>= array
.raid_disks
*2 &&
577 if (d
== array
.raid_disks
*2) printf("\n");
579 printf(" - %5d %5d - ",
580 disk
.major
, disk
.minor
);
581 else if (disk
.raid_disk
< 0)
582 printf(" %5d %5d %5d - ",
583 disk
.number
, disk
.major
, disk
.minor
);
585 printf(" %5d %5d %5d %5d ",
586 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
588 if (!c
->brief
&& array
.raid_disks
) {
590 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
592 if (disk
.raid_disk
< array
.raid_disks
&&
596 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
597 if (disk
.state
& (1<<MD_DISK_SYNC
)) {
599 if (array
.level
== 10 && (array
.layout
& ~0x1FFFF) == 0) {
600 int nc
= array
.layout
& 0xff;
601 int fc
= (array
.layout
>> 8) & 0xff;
603 if (fc
== 1 && array
.raid_disks
% copies
== 0 && copies
<= 26) {
604 /* We can divide the devices into 'sets' */
605 int set
= disk
.raid_disk
% copies
;
606 printf(" set-%c", set
+ 'A');
610 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
611 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
613 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)
614 |(1<<MD_DISK_REMOVED
)|(1<<MD_DISK_FAULTY
)))
618 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
619 printf(" rebuilding");
620 } else if (is_rebuilding
&& failed
) {
621 /* Taking a bit of a risk here, we remove the
622 * device from the array, and then put it back.
623 * If this fails, we are rebuilding
625 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
626 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
627 if (err
&& errno
== EBUSY
)
628 printf(" rebuilding");
632 if (disk
.state
== 0) spares
++;
633 if (c
->test
&& d
< array
.raid_disks
634 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
636 dv
=map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
640 devices
= xrealloc(devices
,
641 strlen(devices
)+1+strlen(dv
)+1);
642 strcat(strcat(devices
,","),dv
);
644 devices
= xstrdup(dv
);
648 if (!c
->brief
) printf("\n");
650 if (spares
&& c
->brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
651 if (c
->brief
&& st
&& st
->sb
)
652 st
->ss
->brief_detail_super(st
);
654 st
->ss
->free_super(st
);
656 if (c
->brief
&& c
->verbose
> 0 && devices
) printf("\n devices=%s", devices
);
660 !enough(array
.level
, array
.raid_disks
, array
.layout
,
673 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
675 /* display platform capabilities for the given metadata format
676 * 'scan' in this context means iterate over all metadata types
681 if (ss
&& export
&& ss
->export_detail_platform
)
682 err
= ss
->export_detail_platform(verbose
, controller_path
);
683 else if (ss
&& ss
->detail_platform
)
684 err
= ss
->detail_platform(verbose
, 0, controller_path
);
687 pr_err("%s metadata is platform independent\n",
688 ss
->name
? : "[no name]");
691 pr_err("specify a metadata type or --scan\n");
698 for (i
= 0; superlist
[i
]; i
++) {
699 struct superswitch
*meta
= superlist
[i
];
704 pr_err("checking metadata %s\n",
705 meta
->name
? : "[no name]");
706 if (!meta
->detail_platform
) {
708 pr_err("%s metadata is platform independent\n",
709 meta
->name
? : "[no name]");
710 } else if (export
&& meta
->export_detail_platform
) {
711 err
|= meta
->export_detail_platform(verbose
, controller_path
);
713 err
|= meta
->detail_platform(verbose
, 0, controller_path
);