]>
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;
51 struct supertype
*st
= NULL
;
52 int max_disks
= MD_SB_DISKS
; /* just a default */
56 char *container
= NULL
;
58 int rv
= test
? 4 : 1;
63 fprintf(stderr
, Name
": cannot open %s: %s\n",
64 dev
, strerror(errno
));
67 vers
= md_get_version(fd
);
69 fprintf(stderr
, Name
": %s does not appear to be an md device\n",
75 fprintf(stderr
, Name
": cannot get detail for md device %s: driver version too old.\n",
80 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)<0) {
82 fprintf(stderr
, Name
": md device %s does not appear to be active.\n",
85 fprintf(stderr
, Name
": cannot get array detail for %s: %s\n",
86 dev
, strerror(errno
));
90 sra
= sysfs_read(fd
, 0, GET_VERSION
);
93 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
98 max_disks
= st
->max_devs
;
100 if (sra
&& is_subarray(sra
->text_version
) &&
101 strchr(sra
->text_version
+1, '/')) {
102 /* This is a subarray of some container.
103 * We want the name of the container, and the member
105 char *s
= strchr(sra
->text_version
+1, '/');
109 dn
= devname2devnum(sra
->text_version
+1);
110 container
= map_dev(dev2major(dn
), dev2minor(dn
), 1);
113 /* try to load a superblock */
114 for (d
= 0; d
<max_disks
; d
++) {
115 mdu_disk_info_t disk
;
118 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0)
120 if (d
>= array
.raid_disks
&&
124 if ((dv
=map_dev(disk
.major
, disk
.minor
, 1))) {
125 /* some formats (imsm) have free-floating-spares
126 * with a uuid of uuid_match_any, they don't
127 * have very good info about the rest of the
128 * container, so keep searching when
129 * encountering such a device. Otherwise, stop
130 * after the first successful call to
133 int free_spare
= memcmp(uuid_match_any
,
135 sizeof(uuid_match_any
)) == 0;
136 if ((!st
|| !st
->sb
|| free_spare
) &&
137 (array
.raid_disks
== 0 ||
138 (disk
.state
& (1<<MD_DISK_ACTIVE
)))) {
139 /* try to read the superblock from this device
143 st
->ss
->free_super(st
);
144 int fd2
= dev_open(dv
, O_RDONLY
);
146 st
->ss
->load_super(st
, fd2
, NULL
) == 0) {
147 st
->ss
->getinfo_super(st
, &info
);
148 if (array
.raid_disks
!= 0 && /* container */
149 (info
.array
.ctime
!= array
.ctime
||
150 info
.array
.level
!= array
.level
))
151 st
->ss
->free_super(st
);
153 if (fd2
>= 0) close(fd2
);
158 /* Ok, we have some info to print... */
159 c
= map_num(pers
, array
.level
);
162 if (array
.raid_disks
) {
164 printf("MD_LEVEL=%s\n", c
);
165 printf("MD_DEVICES=%d\n", array
.raid_disks
);
167 printf("MD_LEVEL=container\n");
168 printf("MD_DEVICES=%d\n", array
.nr_disks
);
171 printf("MD_CONTAINER=%s\n", container
);
172 printf("MD_MEMBER=%s\n", member
);
174 if (sra
&& sra
->array
.major_version
< 0)
175 printf("MD_METADATA=%s\n", sra
->text_version
);
177 printf("MD_METADATA=%d.%02d\n",
178 array
.major_version
, array
.minor_version
);
184 struct map_ent
*mp
, *map
= NULL
;
185 st
->ss
->getinfo_super(st
, &info
);
186 fname_from_uuid(st
, &info
, nbuf
, ':');
187 printf("MD_UUID=%s\n", nbuf
+5);
188 mp
= map_by_uuid(&map
, info
.uuid
);
189 if (mp
&& mp
->path
&&
190 strncmp(mp
->path
, "/dev/md/", 8) == 0)
191 printf("MD_DEVNAME=%s\n", mp
->path
+8);
193 if (st
->ss
->export_detail_super
)
194 st
->ss
->export_detail_super(st
);
196 struct map_ent
*mp
, *map
= NULL
;
197 mp
= map_by_devnum(&map
, fd2devnum(fd
));
198 if (mp
&& mp
->path
&&
199 strncmp(mp
->path
, "/dev/md/", 8) == 0)
200 printf("MD_DEVNAME=%s\n", mp
->path
+8);
206 mdu_bitmap_file_t bmf
;
207 printf("ARRAY %s", dev
);
209 if (array
.raid_disks
)
210 printf("level=%s num-devices=%d",
214 printf("level=container num-devices=%d",
218 printf(" container=%s", container
);
219 printf(" member=%s", member
);
221 if (sra
&& sra
->array
.major_version
< 0)
222 printf(" metadata=%s", sra
->text_version
);
224 printf(" metadata=%d.%02d",
225 array
.major_version
, array
.minor_version
);
228 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
230 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
232 printf(" bitmap=%s", bmf
.pathname
);
235 mdu_bitmap_file_t bmf
;
236 unsigned long long larray_size
;
237 struct mdstat_ent
*ms
= mdstat_read(0, 0);
238 struct mdstat_ent
*e
;
239 int devnum
= array
.md_minor
;
240 if (major(stb
.st_rdev
) == get_mdp_major())
241 devnum
= -1 - devnum
;
243 for (e
=ms
; e
; e
=e
->next
)
244 if (e
->devnum
== devnum
)
246 if (!get_dev_size(fd
, NULL
, &larray_size
))
249 printf("%s:\n", dev
);
252 printf(" Container : %s, member %s\n", container
, member
);
254 if (sra
&& sra
->array
.major_version
< 0)
255 printf(" Version : %s\n", sra
->text_version
);
257 printf(" Version : %d.%02d\n",
258 array
.major_version
, array
.minor_version
);
263 printf(" Creation Time : %.24s\n", ctime(&atime
));
264 if (array
.raid_disks
== 0) c
= "container";
265 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
267 printf(" Array Size : %llu%s\n", (larray_size
>>10), human_size(larray_size
));
268 if (array
.level
>= 1) {
269 if (array
.major_version
!= 0 &&
270 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
271 unsigned long long dsize
= get_component_size(fd
);
273 printf(" Used Dev Size : %llu%s\n",
275 human_size((long long)dsize
<<9));
277 printf(" Used Dev Size : unknown\n");
279 printf(" Used Dev Size : %d%s\n", array
.size
,
280 human_size((long long)array
.size
<<10));
282 if (array
.raid_disks
)
283 printf(" Raid Devices : %d\n", array
.raid_disks
);
284 printf(" Total Devices : %d\n", array
.nr_disks
);
286 ((sra
== NULL
&& array
.major_version
== 0) ||
287 (sra
&& sra
->array
.major_version
== 0)))
288 printf("Preferred Minor : %d\n", array
.md_minor
);
289 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
290 printf(" Persistence : Superblock is %spersistent\n",
291 array
.not_persistent
?"not ":"");
293 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
295 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
297 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
299 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
300 printf(" Intent Bitmap : Internal\n\n");
303 printf(" Update Time : %.24s\n", ctime(&atime
));
304 if (array
.raid_disks
)
305 printf(" State : %s%s%s%s\n",
306 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active",
307 array
.active_disks
< array
.raid_disks
? ", degraded":"",
308 (!e
|| e
->percent
< 0) ? "" :
309 (e
->resync
) ? ", resyncing": ", recovering",
310 larray_size
? "": ", Not Started");
311 if (array
.raid_disks
)
312 printf(" Active Devices : %d\n", array
.active_disks
);
313 printf("Working Devices : %d\n", array
.working_disks
);
314 if (array
.raid_disks
) {
315 printf(" Failed Devices : %d\n", array
.failed_disks
);
316 printf(" Spare Devices : %d\n", array
.spare_disks
);
319 if (array
.level
== 5) {
320 c
= map_num(r5layout
, array
.layout
);
321 printf(" Layout : %s\n", c
?c
:"-unknown-");
323 if (array
.level
== 10) {
325 print_r10_layout(array
.layout
);
328 switch (array
.level
) {
334 if (array
.chunk_size
)
335 printf(" Chunk Size : %dK\n\n",
336 array
.chunk_size
/1024);
339 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
344 if (e
&& e
->percent
>= 0) {
345 printf(" Re%s Status : %d%% complete\n",
346 (st
&& st
->sb
&& info
.reshape_active
)?
353 if (st
->sb
&& info
.reshape_active
) {
355 This is pretty boring
356 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
.reshape_progress
<<9,
357 human_size(info
.reshape_progress
<<9));
359 if (info
.delta_disks
> 0)
360 printf(" Delta Devices : %d, (%d->%d)\n",
361 info
.delta_disks
, array
.raid_disks
- info
.delta_disks
, array
.raid_disks
);
362 if (info
.delta_disks
< 0)
363 printf(" Delta Devices : %d, (%d->%d)\n",
364 info
.delta_disks
, array
.raid_disks
, array
.raid_disks
+ info
.delta_disks
);
365 if (info
.new_level
!= array
.level
) {
366 char *c
= map_num(pers
, info
.new_level
);
367 printf(" New Level : %s\n", c
?c
:"-unknown-");
369 if (info
.new_level
!= array
.level
||
370 info
.new_layout
!= array
.layout
) {
371 if (info
.new_level
== 5) {
372 char *c
= map_num(r5layout
, info
.new_layout
);
373 printf(" New Layout : %s\n",
376 if (info
.new_level
== 10) {
377 printf(" New Layout : near=%d, %s=%d\n",
379 (info
.new_layout
&0x10000)?"offset":"far",
380 (info
.new_layout
>>8)&255);
383 if (info
.new_chunk
!= array
.chunk_size
)
384 printf(" New Chunksize : %dK\n", info
.new_chunk
/1024);
386 } else if (e
&& e
->percent
>= 0)
389 st
->ss
->detail_super(st
, homehost
);
391 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
392 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
393 /* This looks like a container. Find any active arrays
394 * That claim to be a member.
396 DIR *dir
= opendir("/sys/block");
399 printf(" Member Arrays :");
401 while (dir
&& (de
= readdir(dir
)) != NULL
) {
404 int nlen
= strlen(sra
->sys_name
);
406 if (de
->d_name
[0] == '.')
408 sprintf(path
, "/sys/block/%s/md/metadata_version",
410 if (load_sys(path
, vbuf
) < 0)
412 if (strncmp(vbuf
, "external:", 9) != 0 ||
413 !is_subarray(sra
->sys_name
+9) ||
414 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
415 vbuf
[10+nlen
] != '/')
417 dn
= devname2devnum(de
->d_name
);
418 printf(" %s", map_dev(dev2major(dn
),
426 if (array
.raid_disks
)
427 printf(" Number Major Minor RaidDevice State\n");
429 printf(" Number Major Minor RaidDevice\n");
431 disks
= malloc(max_disks
* sizeof(mdu_disk_info_t
));
432 for (d
=0; d
<max_disks
; d
++) {
433 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
434 disks
[d
].major
= disks
[d
].minor
= 0;
435 disks
[d
].number
= disks
[d
].raid_disk
= d
;
438 next
= array
.raid_disks
;
439 for (d
=0; d
< max_disks
; d
++) {
440 mdu_disk_info_t disk
;
442 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
443 if (d
< array
.raid_disks
)
444 fprintf(stderr
, Name
": cannot get device detail for device %d: %s\n",
448 if (disk
.major
== 0 && disk
.minor
== 0)
450 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
)
451 disks
[disk
.raid_disk
] = disk
;
452 else if (next
< max_disks
)
453 disks
[next
++] = disk
;
456 avail
= calloc(array
.raid_disks
, 1);
457 for (d
= 0; d
< max_disks
; d
++) {
459 mdu_disk_info_t disk
= disks
[d
];
461 if (d
>= array
.raid_disks
&&
466 if (d
== array
.raid_disks
) printf("\n");
467 if (disk
.raid_disk
< 0)
468 printf(" %5d %5d %5d - ",
469 disk
.number
, disk
.major
, disk
.minor
);
471 printf(" %5d %5d %5d %5d ",
472 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
474 if (!brief
&& array
.raid_disks
) {
476 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
478 if (disk
.raid_disk
< array
.raid_disks
&&
482 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
483 if (disk
.state
& (1<<MD_DISK_SYNC
)) printf(" sync");
484 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
485 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
487 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)|(1<<MD_DISK_REMOVED
)))
491 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
492 printf(" rebuilding");
493 } else if (is_rebuilding
&& failed
) {
494 /* Taking a bit of a risk here, we remove the
495 * device from the array, and then put it back.
496 * If this fails, we are rebuilding
498 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
499 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
500 if (err
&& errno
== EBUSY
)
501 printf(" rebuilding");
505 if (disk
.state
== 0) spares
++;
506 if (test
&& d
< array
.raid_disks
507 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
509 if (d
< array
.raid_disks
510 && (disk
.state
& (1<<MD_DISK_SYNC
))) {
514 if ((dv
=map_dev(disk
.major
, disk
.minor
, 0))) {
517 devices
= realloc(devices
,
518 strlen(devices
)+1+strlen(dv
)+1);
519 strcat(strcat(devices
,","),dv
);
521 devices
= strdup(dv
);
525 if (!brief
) printf("\n");
527 if (spares
&& brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
528 if (brief
&& st
&& st
->sb
)
529 st
->ss
->brief_detail_super(st
);
530 st
->ss
->free_super(st
);
532 if (brief
> 1 && devices
) printf("\n devices=%s", devices
);
533 if (brief
) printf("\n");
535 !enough(array
.level
, array
.raid_disks
, array
.layout
,
536 1, avail
, avail_disks
))
544 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
)
546 /* display platform capabilities for the given metadata format
547 * 'scan' in this context means iterate over all metadata types
552 if (ss
&& ss
->detail_platform
)
553 err
= ss
->detail_platform(verbose
, 0);
556 fprintf(stderr
, Name
": %s metadata is platform independent\n",
557 ss
->name
? : "[no name]");
560 fprintf(stderr
, Name
": specify a metadata type or --scan\n");
566 for (i
= 0; superlist
[i
]; i
++) {
567 struct superswitch
*meta
= superlist
[i
];
572 fprintf(stderr
, Name
": checking metadata %s\n",
573 meta
->name
? : "[no name]");
574 if (!meta
->detail_platform
) {
576 fprintf(stderr
, Name
": %s metadata is platform independent\n",
577 meta
->name
? : "[no name]");
579 err
|= meta
->detail_platform(verbose
, 0);