]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2006 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@cse.unsw.edu.au>
24 * School of Computer Science and Engineering
25 * The University of New South Wales
35 int Detail(char *dev
, int brief
, int export
, int test
, char *homehost
)
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
;
53 int is_26
= get_linux_version() >= 2006000;
54 int is_rebuilding
= 0;
56 struct supertype
*st
= NULL
;
57 int max_disks
= MD_SB_DISKS
; /* just a default */
61 char *container
= NULL
;
63 int rv
= test
? 4 : 1;
68 fprintf(stderr
, Name
": cannot open %s: %s\n",
69 dev
, strerror(errno
));
72 vers
= md_get_version(fd
);
74 fprintf(stderr
, Name
": %s does not appear to be an md device\n",
80 fprintf(stderr
, Name
": cannot get detail for md device %s: driver version too old.\n",
85 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)<0) {
87 fprintf(stderr
, Name
": md device %s does not appear to be active.\n",
90 fprintf(stderr
, Name
": cannot get array detail for %s: %s\n",
91 dev
, strerror(errno
));
95 sra
= sysfs_read(fd
, 0, GET_VERSION
);
98 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
103 max_disks
= st
->max_devs
;
105 if (sra
&& is_subarray(sra
->text_version
) &&
106 strchr(sra
->text_version
+1, '/')) {
107 /* This is a subarray of some container.
108 * We want the name of the container, and the member
110 char *s
= strchr(sra
->text_version
+1, '/');
114 dn
= devname2devnum(sra
->text_version
+1);
115 container
= map_dev(dev2major(dn
), dev2minor(dn
), 1);
118 /* try to load a superblock */
119 for (d
= 0; d
<max_disks
; d
++) {
120 mdu_disk_info_t disk
;
123 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0)
125 if (d
>= array
.raid_disks
&&
129 if ((dv
=map_dev(disk
.major
, disk
.minor
, 1))) {
130 if ((!st
|| !st
->sb
) &&
131 (array
.raid_disks
== 0 ||
132 (disk
.state
& (1<<MD_DISK_ACTIVE
)))) {
133 /* try to read the superblock from this device
136 int fd2
= dev_open(dv
, O_RDONLY
);
138 st
->ss
->load_super(st
, fd2
, NULL
) == 0) {
139 st
->ss
->getinfo_super(st
, &info
);
140 if (array
.raid_disks
!= 0 && /* container */
141 (info
.array
.ctime
!= array
.ctime
||
142 info
.array
.level
!= array
.level
))
143 st
->ss
->free_super(st
);
145 if (fd2
>= 0) close(fd2
);
150 /* Ok, we have some info to print... */
151 c
= map_num(pers
, array
.level
);
154 if (array
.raid_disks
) {
156 printf("MD_LEVEL=%s\n", c
);
157 printf("MD_DEVICES=%d\n", array
.raid_disks
);
159 printf("MD_LEVEL=container\n");
160 printf("MD_DEVICES=%d\n", array
.nr_disks
);
163 printf("MD_CONTAINER=%s\n", container
);
164 printf("MD_MEMBER=%s\n", member
);
166 if (sra
&& sra
->array
.major_version
< 0)
167 printf("MD_METADATA=%s\n", sra
->text_version
);
169 printf("MD_METADATA=%d.%02d\n",
170 array
.major_version
, array
.minor_version
);
176 struct map_ent
*mp
, *map
= NULL
;
177 st
->ss
->getinfo_super(st
, &info
);
178 fname_from_uuid(st
, &info
, nbuf
, ':');
179 printf("MD_UUID=%s\n", nbuf
+5);
180 mp
= map_by_uuid(&map
, info
.uuid
);
181 if (mp
&& mp
->path
&&
182 strncmp(mp
->path
, "/dev/md/", 8) == 0)
183 printf("MD_DEVNAME=%s\n", mp
->path
+8);
185 if (st
->ss
->export_detail_super
)
186 st
->ss
->export_detail_super(st
);
188 struct map_ent
*mp
, *map
= NULL
;
189 mp
= map_by_devnum(&map
, fd2devnum(fd
));
190 if (mp
&& mp
->path
&&
191 strncmp(mp
->path
, "/dev/md/", 8) == 0)
192 printf("MD_DEVNAME=%s\n", mp
->path
+8);
198 mdu_bitmap_file_t bmf
;
199 if (array
.raid_disks
)
200 printf("ARRAY %s level=%s num-devices=%d", dev
,
204 printf("ARRAY %s level=container num-devices=%d",
205 dev
, array
.nr_disks
);
208 printf(" container=%s", container
);
209 printf(" member=%s", member
);
211 if (sra
&& sra
->array
.major_version
< 0)
212 printf(" metadata=%s", sra
->text_version
);
214 printf(" metadata=%d.%02d",
215 array
.major_version
, array
.minor_version
);
218 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
220 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
222 printf(" bitmap=%s", bmf
.pathname
);
225 mdu_bitmap_file_t bmf
;
226 unsigned long long larray_size
;
227 struct mdstat_ent
*ms
= mdstat_read(0, 0);
228 struct mdstat_ent
*e
;
229 int devnum
= array
.md_minor
;
230 if (major(stb
.st_rdev
) == get_mdp_major())
231 devnum
= -1 - devnum
;
233 for (e
=ms
; e
; e
=e
->next
)
234 if (e
->devnum
== devnum
)
236 if (!get_dev_size(fd
, NULL
, &larray_size
))
239 printf("%s:\n", dev
);
242 printf(" Container : %s, member %s\n", container
, member
);
244 if (sra
&& sra
->array
.major_version
< 0)
245 printf(" Version : %s\n", sra
->text_version
);
247 printf(" Version : %d.%02d\n",
248 array
.major_version
, array
.minor_version
);
253 printf(" Creation Time : %.24s\n", ctime(&atime
));
254 if (array
.raid_disks
== 0) c
= "container";
255 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
257 printf(" Array Size : %llu%s\n", (larray_size
>>10), human_size(larray_size
));
258 if (array
.level
>= 1) {
259 if (array
.major_version
!= 0 &&
260 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
261 unsigned long long dsize
= get_component_size(fd
);
263 printf(" Used Dev Size : %llu%s\n",
265 human_size((long long)dsize
<<9));
267 printf(" Used Dev Size : unknown\n");
269 printf(" Used Dev Size : %d%s\n", array
.size
,
270 human_size((long long)array
.size
<<10));
272 if (array
.raid_disks
)
273 printf(" Raid Devices : %d\n", array
.raid_disks
);
274 printf(" Total Devices : %d\n", array
.nr_disks
);
276 ((sra
== NULL
&& array
.major_version
== 0) ||
277 (sra
&& sra
->array
.major_version
== 0)))
278 printf("Preferred Minor : %d\n", array
.md_minor
);
279 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
280 printf(" Persistence : Superblock is %spersistent\n",
281 array
.not_persistent
?"not ":"");
283 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
285 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
287 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
289 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
290 printf(" Intent Bitmap : Internal\n\n");
293 printf(" Update Time : %.24s\n", ctime(&atime
));
294 if (array
.raid_disks
)
295 printf(" State : %s%s%s%s\n",
296 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active",
297 array
.active_disks
< array
.raid_disks
? ", degraded":"",
298 (!e
|| e
->percent
< 0) ? "" :
299 (e
->resync
) ? ", resyncing": ", recovering",
300 larray_size
? "": ", Not Started");
301 if (array
.raid_disks
)
302 printf(" Active Devices : %d\n", array
.active_disks
);
303 printf("Working Devices : %d\n", array
.working_disks
);
304 if (array
.raid_disks
) {
305 printf(" Failed Devices : %d\n", array
.failed_disks
);
306 printf(" Spare Devices : %d\n", array
.spare_disks
);
309 if (array
.level
== 5) {
310 c
= map_num(r5layout
, array
.layout
);
311 printf(" Layout : %s\n", c
?c
:"-unknown-");
313 if (array
.level
== 10) {
315 print_r10_layout(array
.layout
);
318 switch (array
.level
) {
324 if (array
.chunk_size
)
325 printf(" Chunk Size : %dK\n\n",
326 array
.chunk_size
/1024);
329 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
334 if (e
&& e
->percent
>= 0) {
335 printf(" Re%s Status : %d%% complete\n",
336 (st
&& st
->sb
&& info
.reshape_active
)?
343 if (st
->sb
&& info
.reshape_active
) {
345 This is pretty boring
346 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
.reshape_progress
<<9,
347 human_size(info
.reshape_progress
<<9));
349 if (info
.delta_disks
> 0)
350 printf(" Delta Devices : %d, (%d->%d)\n",
351 info
.delta_disks
, array
.raid_disks
- info
.delta_disks
, array
.raid_disks
);
352 if (info
.delta_disks
< 0)
353 printf(" Delta Devices : %d, (%d->%d)\n",
354 info
.delta_disks
, array
.raid_disks
, array
.raid_disks
+ info
.delta_disks
);
355 if (info
.new_level
!= array
.level
) {
356 char *c
= map_num(pers
, info
.new_level
);
357 printf(" New Level : %s\n", c
?c
:"-unknown-");
359 if (info
.new_level
!= array
.level
||
360 info
.new_layout
!= array
.layout
) {
361 if (info
.new_level
== 5) {
362 char *c
= map_num(r5layout
, info
.new_layout
);
363 printf(" New Layout : %s\n",
366 if (info
.new_level
== 10) {
367 printf(" New Layout : near=%d, %s=%d\n",
369 (info
.new_layout
&0x10000)?"offset":"far",
370 (info
.new_layout
>>8)&255);
373 if (info
.new_chunk
!= array
.chunk_size
)
374 printf(" New Chunksize : %dK\n", info
.new_chunk
/1024);
376 } else if (e
&& e
->percent
>= 0)
379 st
->ss
->detail_super(st
, homehost
);
381 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
382 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
383 /* This looks like a container. Find any active arrays
384 * That claim to be a member.
386 DIR *dir
= opendir("/sys/block");
389 printf(" Member Arrays :");
391 while (dir
&& (de
= readdir(dir
)) != NULL
) {
394 int nlen
= strlen(sra
->sys_name
);
396 if (de
->d_name
[0] == '.')
398 sprintf(path
, "/sys/block/%s/md/metadata_version",
400 if (load_sys(path
, vbuf
) < 0)
402 if (strncmp(vbuf
, "external:", 9) != 0 ||
403 !is_subarray(sra
->sys_name
+9) ||
404 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
405 vbuf
[10+nlen
] != '/')
407 dn
= devname2devnum(de
->d_name
);
408 printf(" %s", map_dev(dev2major(dn
),
416 if (array
.raid_disks
)
417 printf(" Number Major Minor RaidDevice State\n");
419 printf(" Number Major Minor RaidDevice\n");
421 disks
= malloc(max_disks
* sizeof(mdu_disk_info_t
));
422 for (d
=0; d
<max_disks
; d
++) {
423 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
424 disks
[d
].major
= disks
[d
].minor
= 0;
425 disks
[d
].number
= disks
[d
].raid_disk
= d
;
428 next
= array
.raid_disks
;
429 for (d
=0; d
< max_disks
; d
++) {
430 mdu_disk_info_t disk
;
432 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
433 if (d
< array
.raid_disks
)
434 fprintf(stderr
, Name
": cannot get device detail for device %d: %s\n",
438 if (disk
.major
== 0 && disk
.minor
== 0)
440 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
)
441 disks
[disk
.raid_disk
] = disk
;
442 else if (next
< max_disks
)
443 disks
[next
++] = disk
;
446 avail
= calloc(array
.raid_disks
, 1);
447 for (d
= 0; d
< max_disks
; d
++) {
449 mdu_disk_info_t disk
= disks
[d
];
451 if (d
>= array
.raid_disks
&&
456 if (d
== array
.raid_disks
) printf("\n");
457 if (disk
.raid_disk
< 0)
458 printf(" %5d %5d %5d - ",
459 disk
.number
, disk
.major
, disk
.minor
);
461 printf(" %5d %5d %5d %5d ",
462 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
464 if (!brief
&& array
.raid_disks
) {
466 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
468 if (disk
.raid_disk
< array
.raid_disks
&&
472 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
473 if (disk
.state
& (1<<MD_DISK_SYNC
)) printf(" sync");
474 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
475 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
477 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)|(1<<MD_DISK_REMOVED
)))
481 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
482 printf(" rebuilding");
483 } else if (is_rebuilding
&& failed
) {
484 /* Taking a bit of a risk here, we remove the
485 * device from the array, and then put it back.
486 * If this fails, we are rebuilding
488 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
489 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
490 if (err
&& errno
== EBUSY
)
491 printf(" rebuilding");
495 if (disk
.state
== 0) spares
++;
496 if (test
&& d
< array
.raid_disks
497 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
499 if (d
< array
.raid_disks
500 && (disk
.state
& (1<<MD_DISK_SYNC
))) {
504 if ((dv
=map_dev(disk
.major
, disk
.minor
, 0))) {
507 devices
= realloc(devices
,
508 strlen(devices
)+1+strlen(dv
)+1);
509 strcat(strcat(devices
,","),dv
);
511 devices
= strdup(dv
);
515 if (!brief
) printf("\n");
517 if (spares
&& brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
518 if (brief
&& st
&& st
->sb
)
519 st
->ss
->brief_detail_super(st
);
520 st
->ss
->free_super(st
);
522 if (brief
> 1 && devices
) printf("\n devices=%s", devices
);
523 if (brief
) printf("\n");
525 !enough(array
.level
, array
.raid_disks
, array
.layout
,
526 1, avail
, avail_disks
))
534 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
)
536 /* display platform capabilities for the given metadata format
537 * 'scan' in this context means iterate over all metadata types
542 if (ss
&& ss
->detail_platform
)
543 err
= ss
->detail_platform(verbose
, 0);
546 fprintf(stderr
, Name
": %s metadata is platform independent\n",
547 ss
->name
? : "[no name]");
550 fprintf(stderr
, Name
": specify a metadata type or --scan\n");
556 for (i
= 0; superlist
[i
]; i
++) {
557 struct superswitch
*meta
= superlist
[i
];
562 fprintf(stderr
, Name
": checking metadata %s\n",
563 meta
->name
? : "[no name]");
564 if (!meta
->detail_platform
) {
566 fprintf(stderr
, Name
": %s metadata is platform independent\n",
567 meta
->name
? : "[no name]");
569 err
|= meta
->detail_platform(verbose
, 0);