]>
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
;
198 mp
= map_by_devnum(&map
, fd2devnum(fd
));
200 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
201 printf("MD_UUID=%s\n", nbuf
+5);
203 if (mp
&& mp
->path
&&
204 strncmp(mp
->path
, "/dev/md/", 8) == 0)
205 printf("MD_DEVNAME=%s\n", mp
->path
+8);
211 mdu_bitmap_file_t bmf
;
212 printf("ARRAY %s", dev
);
214 if (array
.raid_disks
)
215 printf(" level=%s num-devices=%d",
219 printf(" level=container num-devices=%d",
223 printf(" container=%s", container
);
224 printf(" member=%s", member
);
226 if (sra
&& sra
->array
.major_version
< 0)
227 printf(" metadata=%s", sra
->text_version
);
229 printf(" metadata=%d.%02d",
230 array
.major_version
, array
.minor_version
);
233 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
235 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
237 printf(" bitmap=%s", bmf
.pathname
);
240 mdu_bitmap_file_t bmf
;
241 unsigned long long larray_size
;
242 struct mdstat_ent
*ms
= mdstat_read(0, 0);
243 struct mdstat_ent
*e
;
244 int devnum
= array
.md_minor
;
245 if (major(stb
.st_rdev
) == get_mdp_major())
246 devnum
= -1 - devnum
;
248 for (e
=ms
; e
; e
=e
->next
)
249 if (e
->devnum
== devnum
)
251 if (!get_dev_size(fd
, NULL
, &larray_size
))
254 printf("%s:\n", dev
);
257 printf(" Container : %s, member %s\n", container
, member
);
259 if (sra
&& sra
->array
.major_version
< 0)
260 printf(" Version : %s\n", sra
->text_version
);
262 printf(" Version : %d.%02d\n",
263 array
.major_version
, array
.minor_version
);
268 printf(" Creation Time : %.24s\n", ctime(&atime
));
269 if (array
.raid_disks
== 0) c
= "container";
270 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
272 printf(" Array Size : %llu%s\n", (larray_size
>>10), human_size(larray_size
));
273 if (array
.level
>= 1) {
274 if (array
.major_version
!= 0 &&
275 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
276 unsigned long long dsize
= get_component_size(fd
);
278 printf(" Used Dev Size : %llu%s\n",
280 human_size((long long)dsize
<<9));
282 printf(" Used Dev Size : unknown\n");
284 printf(" Used Dev Size : %d%s\n", array
.size
,
285 human_size((long long)array
.size
<<10));
287 if (array
.raid_disks
)
288 printf(" Raid Devices : %d\n", array
.raid_disks
);
289 printf(" Total Devices : %d\n", array
.nr_disks
);
291 ((sra
== NULL
&& array
.major_version
== 0) ||
292 (sra
&& sra
->array
.major_version
== 0)))
293 printf("Preferred Minor : %d\n", array
.md_minor
);
294 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
295 printf(" Persistence : Superblock is %spersistent\n",
296 array
.not_persistent
?"not ":"");
298 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
300 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
302 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
304 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
305 printf(" Intent Bitmap : Internal\n\n");
308 printf(" Update Time : %.24s\n", ctime(&atime
));
309 if (array
.raid_disks
)
310 printf(" State : %s%s%s%s\n",
311 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active",
312 array
.active_disks
< array
.raid_disks
? ", degraded":"",
313 (!e
|| e
->percent
< 0) ? "" :
314 (e
->resync
) ? ", resyncing": ", recovering",
315 larray_size
? "": ", Not Started");
316 if (array
.raid_disks
)
317 printf(" Active Devices : %d\n", array
.active_disks
);
318 printf("Working Devices : %d\n", array
.working_disks
);
319 if (array
.raid_disks
) {
320 printf(" Failed Devices : %d\n", array
.failed_disks
);
321 printf(" Spare Devices : %d\n", array
.spare_disks
);
324 if (array
.level
== 5) {
325 c
= map_num(r5layout
, array
.layout
);
326 printf(" Layout : %s\n", c
?c
:"-unknown-");
328 if (array
.level
== 6) {
329 c
= map_num(r6layout
, array
.layout
);
330 printf(" Layout : %s\n", c
?c
:"-unknown-");
332 if (array
.level
== 10) {
334 print_r10_layout(array
.layout
);
337 switch (array
.level
) {
343 if (array
.chunk_size
)
344 printf(" Chunk Size : %dK\n\n",
345 array
.chunk_size
/1024);
348 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
353 if (e
&& e
->percent
>= 0) {
354 printf(" Re%s Status : %d%% complete\n",
355 (st
&& st
->sb
&& info
.reshape_active
)?
362 if (st
->sb
&& info
.reshape_active
) {
364 This is pretty boring
365 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
.reshape_progress
<<9,
366 human_size(info
.reshape_progress
<<9));
368 if (info
.delta_disks
> 0)
369 printf(" Delta Devices : %d, (%d->%d)\n",
370 info
.delta_disks
, array
.raid_disks
- info
.delta_disks
, array
.raid_disks
);
371 if (info
.delta_disks
< 0)
372 printf(" Delta Devices : %d, (%d->%d)\n",
373 info
.delta_disks
, array
.raid_disks
, array
.raid_disks
+ info
.delta_disks
);
374 if (info
.new_level
!= array
.level
) {
375 char *c
= map_num(pers
, info
.new_level
);
376 printf(" New Level : %s\n", c
?c
:"-unknown-");
378 if (info
.new_level
!= array
.level
||
379 info
.new_layout
!= array
.layout
) {
380 if (info
.new_level
== 5) {
381 char *c
= map_num(r5layout
, info
.new_layout
);
382 printf(" New Layout : %s\n",
385 if (info
.new_level
== 6) {
386 char *c
= map_num(r6layout
, info
.new_layout
);
387 printf(" New Layout : %s\n",
390 if (info
.new_level
== 10) {
391 printf(" New Layout : near=%d, %s=%d\n",
393 (info
.new_layout
&0x10000)?"offset":"far",
394 (info
.new_layout
>>8)&255);
397 if (info
.new_chunk
!= array
.chunk_size
)
398 printf(" New Chunksize : %dK\n", info
.new_chunk
/1024);
400 } else if (e
&& e
->percent
>= 0)
403 st
->ss
->detail_super(st
, homehost
);
405 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
406 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
407 /* This looks like a container. Find any active arrays
408 * That claim to be a member.
410 DIR *dir
= opendir("/sys/block");
413 printf(" Member Arrays :");
415 while (dir
&& (de
= readdir(dir
)) != NULL
) {
418 int nlen
= strlen(sra
->sys_name
);
420 if (de
->d_name
[0] == '.')
422 sprintf(path
, "/sys/block/%s/md/metadata_version",
424 if (load_sys(path
, vbuf
) < 0)
426 if (strncmp(vbuf
, "external:", 9) != 0 ||
427 !is_subarray(sra
->sys_name
+9) ||
428 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
429 vbuf
[10+nlen
] != '/')
431 dn
= devname2devnum(de
->d_name
);
432 printf(" %s", map_dev(dev2major(dn
),
440 if (array
.raid_disks
)
441 printf(" Number Major Minor RaidDevice State\n");
443 printf(" Number Major Minor RaidDevice\n");
445 disks
= malloc(max_disks
* sizeof(mdu_disk_info_t
));
446 for (d
=0; d
<max_disks
; d
++) {
447 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
448 disks
[d
].major
= disks
[d
].minor
= 0;
449 disks
[d
].number
= disks
[d
].raid_disk
= d
;
452 next
= array
.raid_disks
;
453 for (d
=0; d
< max_disks
; d
++) {
454 mdu_disk_info_t disk
;
456 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
457 if (d
< array
.raid_disks
)
458 fprintf(stderr
, Name
": cannot get device detail for device %d: %s\n",
462 if (disk
.major
== 0 && disk
.minor
== 0)
464 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
)
465 disks
[disk
.raid_disk
] = disk
;
466 else if (next
< max_disks
)
467 disks
[next
++] = disk
;
470 avail
= calloc(array
.raid_disks
, 1);
471 for (d
= 0; d
< max_disks
; d
++) {
473 mdu_disk_info_t disk
= disks
[d
];
475 if (d
>= array
.raid_disks
&&
480 if (d
== array
.raid_disks
) printf("\n");
481 if (disk
.raid_disk
< 0)
482 printf(" %5d %5d %5d - ",
483 disk
.number
, disk
.major
, disk
.minor
);
485 printf(" %5d %5d %5d %5d ",
486 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
488 if (!brief
&& array
.raid_disks
) {
490 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
492 if (disk
.raid_disk
< array
.raid_disks
&&
496 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
497 if (disk
.state
& (1<<MD_DISK_SYNC
)) printf(" sync");
498 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
499 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
501 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)|(1<<MD_DISK_REMOVED
)))
505 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
506 printf(" rebuilding");
507 } else if (is_rebuilding
&& failed
) {
508 /* Taking a bit of a risk here, we remove the
509 * device from the array, and then put it back.
510 * If this fails, we are rebuilding
512 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
513 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
514 if (err
&& errno
== EBUSY
)
515 printf(" rebuilding");
519 if (disk
.state
== 0) spares
++;
520 if (test
&& d
< array
.raid_disks
521 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
523 if (d
< array
.raid_disks
524 && (disk
.state
& (1<<MD_DISK_SYNC
))) {
528 if ((dv
=map_dev(disk
.major
, disk
.minor
, 0))) {
531 devices
= realloc(devices
,
532 strlen(devices
)+1+strlen(dv
)+1);
533 strcat(strcat(devices
,","),dv
);
535 devices
= strdup(dv
);
539 if (!brief
) printf("\n");
541 if (spares
&& brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
542 if (brief
&& st
&& st
->sb
)
543 st
->ss
->brief_detail_super(st
);
544 st
->ss
->free_super(st
);
546 if (brief
> 1 && devices
) printf("\n devices=%s", devices
);
547 if (brief
) printf("\n");
549 !enough(array
.level
, array
.raid_disks
, array
.layout
,
550 1, avail
, avail_disks
))
559 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
)
561 /* display platform capabilities for the given metadata format
562 * 'scan' in this context means iterate over all metadata types
567 if (ss
&& ss
->detail_platform
)
568 err
= ss
->detail_platform(verbose
, 0);
571 fprintf(stderr
, Name
": %s metadata is platform independent\n",
572 ss
->name
? : "[no name]");
575 fprintf(stderr
, Name
": specify a metadata type or --scan\n");
581 for (i
= 0; superlist
[i
]; i
++) {
582 struct superswitch
*meta
= superlist
[i
];
587 fprintf(stderr
, Name
": checking metadata %s\n",
588 meta
->name
? : "[no name]");
589 if (!meta
->detail_platform
) {
591 fprintf(stderr
, Name
": %s metadata is platform independent\n",
592 meta
->name
? : "[no name]");
594 err
|= meta
->detail_platform(verbose
, 0);