]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2009 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
, int brief
, int export
, int test
, char *homehost
)
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
;
57 char *container
= NULL
;
59 int rv
= test
? 4 : 1;
64 fprintf(stderr
, Name
": cannot open %s: %s\n",
65 dev
, strerror(errno
));
68 vers
= md_get_version(fd
);
70 fprintf(stderr
, Name
": %s does not appear to be an md device\n",
76 fprintf(stderr
, Name
": cannot get detail for md device %s: driver version too old.\n",
81 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)<0) {
83 fprintf(stderr
, Name
": md device %s does not appear to be active.\n",
86 fprintf(stderr
, Name
": cannot get array detail for %s: %s\n",
87 dev
, strerror(errno
));
91 sra
= sysfs_read(fd
, 0, GET_VERSION
);
92 st
= super_by_fd(fd
, &subarray
);
94 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
99 max_disks
= st
->max_devs
;
101 if (sra
&& is_subarray(sra
->text_version
) &&
102 strchr(sra
->text_version
+1, '/')) {
103 /* This is a subarray of some container.
104 * We want the name of the container, and the member
106 char *s
= strchr(sra
->text_version
+1, '/');
110 dn
= devname2devnum(sra
->text_version
+1);
111 container
= map_dev(dev2major(dn
), dev2minor(dn
), 1);
114 /* try to load a superblock */
115 if (st
) for (d
= 0; d
< max_disks
; d
++) {
116 mdu_disk_info_t disk
;
121 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0)
123 if (d
>= array
.raid_disks
&&
128 if (array
.raid_disks
> 0 &&
129 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
132 dv
= map_dev(disk
.major
, disk
.minor
, 1);
136 fd2
= dev_open(dv
, O_RDONLY
);
141 st
->ss
->free_super(st
);
143 err
= st
->ss
->load_super(st
, fd2
, NULL
);
150 info
= st
->ss
->container_content(st
, subarray
);
152 info
= malloc(sizeof(*info
));
153 st
->ss
->getinfo_super(st
, info
, NULL
);
158 if (array
.raid_disks
!= 0 && /* container */
159 (info
->array
.ctime
!= array
.ctime
||
160 info
->array
.level
!= array
.level
)) {
161 st
->ss
->free_super(st
);
164 /* some formats (imsm) have free-floating-spares
165 * with a uuid of uuid_match_any, they don't
166 * have very good info about the rest of the
167 * container, so keep searching when
168 * encountering such a device. Otherwise, stop
169 * after the first successful call to
172 if (memcmp(uuid_match_any
,
174 sizeof(uuid_match_any
)) == 0) {
175 st
->ss
->free_super(st
);
181 /* Ok, we have some info to print... */
182 c
= map_num(pers
, array
.level
);
185 if (array
.raid_disks
) {
187 printf("MD_LEVEL=%s\n", c
);
188 printf("MD_DEVICES=%d\n", array
.raid_disks
);
190 printf("MD_LEVEL=container\n");
191 printf("MD_DEVICES=%d\n", array
.nr_disks
);
194 printf("MD_CONTAINER=%s\n", container
);
195 printf("MD_MEMBER=%s\n", member
);
197 if (sra
&& sra
->array
.major_version
< 0)
198 printf("MD_METADATA=%s\n", sra
->text_version
);
200 printf("MD_METADATA=%d.%d\n",
201 array
.major_version
, array
.minor_version
);
204 if (st
&& st
->sb
&& info
) {
206 struct map_ent
*mp
, *map
= NULL
;
208 fname_from_uuid(st
, info
, nbuf
, ':');
209 printf("MD_UUID=%s\n", nbuf
+5);
210 mp
= map_by_uuid(&map
, info
->uuid
);
211 if (mp
&& mp
->path
&&
212 strncmp(mp
->path
, "/dev/md/", 8) == 0)
213 printf("MD_DEVNAME=%s\n", mp
->path
+8);
215 if (st
->ss
->export_detail_super
)
216 st
->ss
->export_detail_super(st
);
218 struct map_ent
*mp
, *map
= NULL
;
220 mp
= map_by_devnum(&map
, fd2devnum(fd
));
222 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
223 printf("MD_UUID=%s\n", nbuf
+5);
225 if (mp
&& mp
->path
&&
226 strncmp(mp
->path
, "/dev/md/", 8) == 0)
227 printf("MD_DEVNAME=%s\n", mp
->path
+8);
232 disks
= malloc(max_disks
* sizeof(mdu_disk_info_t
));
233 for (d
=0; d
<max_disks
; d
++) {
234 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
235 disks
[d
].major
= disks
[d
].minor
= 0;
236 disks
[d
].number
= disks
[d
].raid_disk
= d
;
239 next
= array
.raid_disks
;
240 for (d
=0; d
< max_disks
; d
++) {
241 mdu_disk_info_t disk
;
243 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
244 if (d
< array
.raid_disks
)
245 fprintf(stderr
, Name
": cannot get device detail for device %d: %s\n",
249 if (disk
.major
== 0 && disk
.minor
== 0)
251 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
)
252 disks
[disk
.raid_disk
] = disk
;
253 else if (next
< max_disks
)
254 disks
[next
++] = disk
;
257 avail
= calloc(array
.raid_disks
, 1);
259 for (d
= 0; d
< array
.raid_disks
; d
++) {
260 mdu_disk_info_t disk
= disks
[d
];
262 if ((disk
.state
& (1<<MD_DISK_SYNC
))) {
269 mdu_bitmap_file_t bmf
;
270 printf("ARRAY %s", dev
);
272 if (array
.raid_disks
)
273 printf(" level=%s num-devices=%d",
277 printf(" level=container num-devices=%d",
281 printf(" container=%s", container
);
282 printf(" member=%s", member
);
284 if (sra
&& sra
->array
.major_version
< 0)
285 printf(" metadata=%s", sra
->text_version
);
287 printf(" metadata=%d.%d",
288 array
.major_version
, array
.minor_version
);
291 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
293 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
295 printf(" bitmap=%s", bmf
.pathname
);
298 mdu_bitmap_file_t bmf
;
299 unsigned long long larray_size
;
300 struct mdstat_ent
*ms
= mdstat_read(0, 0);
301 struct mdstat_ent
*e
;
302 int devnum
= array
.md_minor
;
303 if (major(stb
.st_rdev
) == (unsigned)get_mdp_major())
304 devnum
= -1 - devnum
;
306 for (e
=ms
; e
; e
=e
->next
)
307 if (e
->devnum
== devnum
)
309 if (!get_dev_size(fd
, NULL
, &larray_size
))
312 printf("%s:\n", dev
);
315 printf(" Container : %s, member %s\n", container
, member
);
317 if (sra
&& sra
->array
.major_version
< 0)
318 printf(" Version : %s\n", sra
->text_version
);
320 printf(" Version : %d.%d\n",
321 array
.major_version
, array
.minor_version
);
326 printf(" Creation Time : %.24s\n", ctime(&atime
));
327 if (array
.raid_disks
== 0) c
= "container";
328 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
330 printf(" Array Size : %llu%s\n", (larray_size
>>10), human_size(larray_size
));
331 if (array
.level
>= 1) {
332 if (array
.major_version
!= 0 &&
333 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
334 unsigned long long dsize
= get_component_size(fd
);
336 printf(" Used Dev Size : %llu%s\n",
338 human_size((long long)dsize
<<9));
340 printf(" Used Dev Size : unknown\n");
342 printf(" Used Dev Size : %d%s\n", array
.size
,
343 human_size((long long)array
.size
<<10));
345 if (array
.raid_disks
)
346 printf(" Raid Devices : %d\n", array
.raid_disks
);
347 printf(" Total Devices : %d\n", array
.nr_disks
);
349 ((sra
== NULL
&& array
.major_version
== 0) ||
350 (sra
&& sra
->array
.major_version
== 0)))
351 printf("Preferred Minor : %d\n", array
.md_minor
);
352 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
353 printf(" Persistence : Superblock is %spersistent\n",
354 array
.not_persistent
?"not ":"");
356 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
358 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
360 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
362 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
363 printf(" Intent Bitmap : Internal\n\n");
366 printf(" Update Time : %.24s\n", ctime(&atime
));
367 if (array
.raid_disks
) {
368 static char *sync_action
[] = {", recovering",", resyncing",", reshaping",", checking"};
370 if (avail_disks
== array
.raid_disks
)
372 else if (!enough(array
.level
, array
.raid_disks
,
373 array
.layout
, 1, avail
, avail_disks
))
378 printf(" State : %s%s%s%s\n",
379 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active",
381 (!e
|| e
->percent
< 0) ? "" : sync_action
[e
->resync
],
382 larray_size
? "": ", Not Started");
384 if (array
.raid_disks
)
385 printf(" Active Devices : %d\n", array
.active_disks
);
386 printf("Working Devices : %d\n", array
.working_disks
);
387 if (array
.raid_disks
) {
388 printf(" Failed Devices : %d\n", array
.failed_disks
);
389 printf(" Spare Devices : %d\n", array
.spare_disks
);
392 if (array
.level
== 5) {
393 c
= map_num(r5layout
, array
.layout
);
394 printf(" Layout : %s\n", c
?c
:"-unknown-");
396 if (array
.level
== 6) {
397 c
= map_num(r6layout
, array
.layout
);
398 printf(" Layout : %s\n", c
?c
:"-unknown-");
400 if (array
.level
== 10) {
402 print_r10_layout(array
.layout
);
405 switch (array
.level
) {
411 if (array
.chunk_size
)
412 printf(" Chunk Size : %dK\n\n",
413 array
.chunk_size
/1024);
416 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
421 if (e
&& e
->percent
>= 0) {
422 printf(" Re%s Status : %d%% complete\n",
423 (st
&& st
->sb
&& info
->reshape_active
)?
430 if (st
->sb
&& info
->reshape_active
) {
432 This is pretty boring
433 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
->reshape_progress
<<9,
434 human_size((unsigned long long)info
->reshape_progress
<<9));
436 if (info
->delta_disks
> 0)
437 printf(" Delta Devices : %d, (%d->%d)\n",
438 info
->delta_disks
, array
.raid_disks
- info
->delta_disks
, array
.raid_disks
);
439 if (info
->delta_disks
< 0)
440 printf(" Delta Devices : %d, (%d->%d)\n",
441 info
->delta_disks
, array
.raid_disks
, array
.raid_disks
+ info
->delta_disks
);
442 if (info
->new_level
!= array
.level
) {
443 char *c
= map_num(pers
, info
->new_level
);
444 printf(" New Level : %s\n", c
?c
:"-unknown-");
446 if (info
->new_level
!= array
.level
||
447 info
->new_layout
!= array
.layout
) {
448 if (info
->new_level
== 5) {
449 char *c
= map_num(r5layout
, info
->new_layout
);
450 printf(" New Layout : %s\n",
453 if (info
->new_level
== 6) {
454 char *c
= map_num(r6layout
, info
->new_layout
);
455 printf(" New Layout : %s\n",
458 if (info
->new_level
== 10) {
459 printf(" New Layout : near=%d, %s=%d\n",
460 info
->new_layout
&255,
461 (info
->new_layout
&0x10000)?"offset":"far",
462 (info
->new_layout
>>8)&255);
465 if (info
->new_chunk
!= array
.chunk_size
)
466 printf(" New Chunksize : %dK\n", info
->new_chunk
/1024);
468 } else if (e
&& e
->percent
>= 0)
471 st
->ss
->detail_super(st
, homehost
);
473 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
474 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
475 /* This looks like a container. Find any active arrays
476 * That claim to be a member.
478 DIR *dir
= opendir("/sys/block");
481 printf(" Member Arrays :");
483 while (dir
&& (de
= readdir(dir
)) != NULL
) {
486 int nlen
= strlen(sra
->sys_name
);
488 if (de
->d_name
[0] == '.')
490 sprintf(path
, "/sys/block/%s/md/metadata_version",
492 if (load_sys(path
, vbuf
) < 0)
494 if (strncmp(vbuf
, "external:", 9) != 0 ||
495 !is_subarray(sra
->sys_name
+9) ||
496 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
497 vbuf
[10+nlen
] != '/')
499 dn
= devname2devnum(de
->d_name
);
500 printf(" %s", map_dev(dev2major(dn
),
508 if (array
.raid_disks
)
509 printf(" Number Major Minor RaidDevice State\n");
511 printf(" Number Major Minor RaidDevice\n");
515 for (d
= 0; d
< max_disks
; d
++) {
517 mdu_disk_info_t disk
= disks
[d
];
519 if (d
>= array
.raid_disks
&&
524 if (d
== array
.raid_disks
) printf("\n");
525 if (disk
.raid_disk
< 0)
526 printf(" %5d %5d %5d - ",
527 disk
.number
, disk
.major
, disk
.minor
);
529 printf(" %5d %5d %5d %5d ",
530 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
532 if (!brief
&& array
.raid_disks
) {
534 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
536 if (disk
.raid_disk
< array
.raid_disks
&&
540 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
541 if (disk
.state
& (1<<MD_DISK_SYNC
)) printf(" sync");
542 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
543 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
545 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)|(1<<MD_DISK_REMOVED
)))
549 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
550 printf(" rebuilding");
551 } else if (is_rebuilding
&& failed
) {
552 /* Taking a bit of a risk here, we remove the
553 * device from the array, and then put it back.
554 * If this fails, we are rebuilding
556 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
557 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
558 if (err
&& errno
== EBUSY
)
559 printf(" rebuilding");
563 if (disk
.state
== 0) spares
++;
564 if (test
&& d
< array
.raid_disks
565 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
567 if ((dv
=map_dev(disk
.major
, disk
.minor
, 0))) {
570 devices
= realloc(devices
,
571 strlen(devices
)+1+strlen(dv
)+1);
572 strcat(strcat(devices
,","),dv
);
574 devices
= strdup(dv
);
578 if (!brief
) printf("\n");
580 if (spares
&& brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
581 if (brief
&& st
&& st
->sb
)
582 st
->ss
->brief_detail_super(st
);
583 st
->ss
->free_super(st
);
585 if (brief
> 1 && devices
) printf("\n devices=%s", devices
);
586 if (brief
) printf("\n");
588 !enough(array
.level
, array
.raid_disks
, array
.layout
,
589 1, avail
, avail_disks
))
599 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
)
601 /* display platform capabilities for the given metadata format
602 * 'scan' in this context means iterate over all metadata types
607 if (ss
&& ss
->detail_platform
)
608 err
= ss
->detail_platform(verbose
, 0);
611 fprintf(stderr
, Name
": %s metadata is platform independent\n",
612 ss
->name
? : "[no name]");
615 fprintf(stderr
, Name
": specify a metadata type or --scan\n");
621 for (i
= 0; superlist
[i
]; i
++) {
622 struct superswitch
*meta
= superlist
[i
];
627 fprintf(stderr
, Name
": checking metadata %s\n",
628 meta
->name
? : "[no name]");
629 if (!meta
->detail_platform
) {
631 fprintf(stderr
, Name
": %s metadata is platform independent\n",
632 meta
->name
? : "[no name]");
634 err
|= meta
->detail_platform(verbose
, 0);