]>
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.%d\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);
210 disks
= malloc(max_disks
* sizeof(mdu_disk_info_t
));
211 for (d
=0; d
<max_disks
; d
++) {
212 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
213 disks
[d
].major
= disks
[d
].minor
= 0;
214 disks
[d
].number
= disks
[d
].raid_disk
= d
;
217 next
= array
.raid_disks
;
218 for (d
=0; d
< max_disks
; d
++) {
219 mdu_disk_info_t disk
;
221 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
222 if (d
< array
.raid_disks
)
223 fprintf(stderr
, Name
": cannot get device detail for device %d: %s\n",
227 if (disk
.major
== 0 && disk
.minor
== 0)
229 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
)
230 disks
[disk
.raid_disk
] = disk
;
231 else if (next
< max_disks
)
232 disks
[next
++] = disk
;
235 avail
= calloc(array
.raid_disks
, 1);
237 for (d
= 0; d
< array
.raid_disks
; d
++) {
238 mdu_disk_info_t disk
= disks
[d
];
240 if ((disk
.state
& (1<<MD_DISK_SYNC
))) {
247 mdu_bitmap_file_t bmf
;
248 printf("ARRAY %s", dev
);
250 if (array
.raid_disks
)
251 printf(" level=%s num-devices=%d",
255 printf(" level=container num-devices=%d",
259 printf(" container=%s", container
);
260 printf(" member=%s", member
);
262 if (sra
&& sra
->array
.major_version
< 0)
263 printf(" metadata=%s", sra
->text_version
);
265 printf(" metadata=%d.%d",
266 array
.major_version
, array
.minor_version
);
269 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
271 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
273 printf(" bitmap=%s", bmf
.pathname
);
276 mdu_bitmap_file_t bmf
;
277 unsigned long long larray_size
;
278 struct mdstat_ent
*ms
= mdstat_read(0, 0);
279 struct mdstat_ent
*e
;
280 int devnum
= array
.md_minor
;
281 if (major(stb
.st_rdev
) == get_mdp_major())
282 devnum
= -1 - devnum
;
284 for (e
=ms
; e
; e
=e
->next
)
285 if (e
->devnum
== devnum
)
287 if (!get_dev_size(fd
, NULL
, &larray_size
))
290 printf("%s:\n", dev
);
293 printf(" Container : %s, member %s\n", container
, member
);
295 if (sra
&& sra
->array
.major_version
< 0)
296 printf(" Version : %s\n", sra
->text_version
);
298 printf(" Version : %d.%d\n",
299 array
.major_version
, array
.minor_version
);
304 printf(" Creation Time : %.24s\n", ctime(&atime
));
305 if (array
.raid_disks
== 0) c
= "container";
306 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
308 printf(" Array Size : %llu%s\n", (larray_size
>>10), human_size(larray_size
));
309 if (array
.level
>= 1) {
310 if (array
.major_version
!= 0 &&
311 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
312 unsigned long long dsize
= get_component_size(fd
);
314 printf(" Used Dev Size : %llu%s\n",
316 human_size((long long)dsize
<<9));
318 printf(" Used Dev Size : unknown\n");
320 printf(" Used Dev Size : %d%s\n", array
.size
,
321 human_size((long long)array
.size
<<10));
323 if (array
.raid_disks
)
324 printf(" Raid Devices : %d\n", array
.raid_disks
);
325 printf(" Total Devices : %d\n", array
.nr_disks
);
327 ((sra
== NULL
&& array
.major_version
== 0) ||
328 (sra
&& sra
->array
.major_version
== 0)))
329 printf("Preferred Minor : %d\n", array
.md_minor
);
330 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
331 printf(" Persistence : Superblock is %spersistent\n",
332 array
.not_persistent
?"not ":"");
334 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
336 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
338 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
340 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
341 printf(" Intent Bitmap : Internal\n\n");
344 printf(" Update Time : %.24s\n", ctime(&atime
));
345 if (array
.raid_disks
) {
347 if (avail_disks
== array
.raid_disks
)
349 else if (!enough(array
.level
, array
.raid_disks
,
350 array
.layout
, 1, avail
, avail_disks
))
355 printf(" State : %s%s%s%s\n",
356 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active",
358 (!e
|| e
->percent
< 0) ? "" :
359 (e
->resync
) ? ", resyncing": ", recovering",
360 larray_size
? "": ", Not Started");
362 if (array
.raid_disks
)
363 printf(" Active Devices : %d\n", array
.active_disks
);
364 printf("Working Devices : %d\n", array
.working_disks
);
365 if (array
.raid_disks
) {
366 printf(" Failed Devices : %d\n", array
.failed_disks
);
367 printf(" Spare Devices : %d\n", array
.spare_disks
);
370 if (array
.level
== 5) {
371 c
= map_num(r5layout
, array
.layout
);
372 printf(" Layout : %s\n", c
?c
:"-unknown-");
374 if (array
.level
== 6) {
375 c
= map_num(r6layout
, array
.layout
);
376 printf(" Layout : %s\n", c
?c
:"-unknown-");
378 if (array
.level
== 10) {
380 print_r10_layout(array
.layout
);
383 switch (array
.level
) {
389 if (array
.chunk_size
)
390 printf(" Chunk Size : %dK\n\n",
391 array
.chunk_size
/1024);
394 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
399 if (e
&& e
->percent
>= 0) {
400 printf(" Re%s Status : %d%% complete\n",
401 (st
&& st
->sb
&& info
.reshape_active
)?
408 if (st
->sb
&& info
.reshape_active
) {
410 This is pretty boring
411 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
.reshape_progress
<<9,
412 human_size(info
.reshape_progress
<<9));
414 if (info
.delta_disks
> 0)
415 printf(" Delta Devices : %d, (%d->%d)\n",
416 info
.delta_disks
, array
.raid_disks
- info
.delta_disks
, array
.raid_disks
);
417 if (info
.delta_disks
< 0)
418 printf(" Delta Devices : %d, (%d->%d)\n",
419 info
.delta_disks
, array
.raid_disks
, array
.raid_disks
+ info
.delta_disks
);
420 if (info
.new_level
!= array
.level
) {
421 char *c
= map_num(pers
, info
.new_level
);
422 printf(" New Level : %s\n", c
?c
:"-unknown-");
424 if (info
.new_level
!= array
.level
||
425 info
.new_layout
!= array
.layout
) {
426 if (info
.new_level
== 5) {
427 char *c
= map_num(r5layout
, info
.new_layout
);
428 printf(" New Layout : %s\n",
431 if (info
.new_level
== 6) {
432 char *c
= map_num(r6layout
, info
.new_layout
);
433 printf(" New Layout : %s\n",
436 if (info
.new_level
== 10) {
437 printf(" New Layout : near=%d, %s=%d\n",
439 (info
.new_layout
&0x10000)?"offset":"far",
440 (info
.new_layout
>>8)&255);
443 if (info
.new_chunk
!= array
.chunk_size
)
444 printf(" New Chunksize : %dK\n", info
.new_chunk
/1024);
446 } else if (e
&& e
->percent
>= 0)
449 st
->ss
->detail_super(st
, homehost
);
451 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
452 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
453 /* This looks like a container. Find any active arrays
454 * That claim to be a member.
456 DIR *dir
= opendir("/sys/block");
459 printf(" Member Arrays :");
461 while (dir
&& (de
= readdir(dir
)) != NULL
) {
464 int nlen
= strlen(sra
->sys_name
);
466 if (de
->d_name
[0] == '.')
468 sprintf(path
, "/sys/block/%s/md/metadata_version",
470 if (load_sys(path
, vbuf
) < 0)
472 if (strncmp(vbuf
, "external:", 9) != 0 ||
473 !is_subarray(sra
->sys_name
+9) ||
474 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
475 vbuf
[10+nlen
] != '/')
477 dn
= devname2devnum(de
->d_name
);
478 printf(" %s", map_dev(dev2major(dn
),
486 if (array
.raid_disks
)
487 printf(" Number Major Minor RaidDevice State\n");
489 printf(" Number Major Minor RaidDevice\n");
492 for (d
= 0; d
< max_disks
; d
++) {
494 mdu_disk_info_t disk
= disks
[d
];
496 if (d
>= array
.raid_disks
&&
501 if (d
== array
.raid_disks
) printf("\n");
502 if (disk
.raid_disk
< 0)
503 printf(" %5d %5d %5d - ",
504 disk
.number
, disk
.major
, disk
.minor
);
506 printf(" %5d %5d %5d %5d ",
507 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
509 if (!brief
&& array
.raid_disks
) {
511 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
513 if (disk
.raid_disk
< array
.raid_disks
&&
517 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
518 if (disk
.state
& (1<<MD_DISK_SYNC
)) printf(" sync");
519 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
520 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
522 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)|(1<<MD_DISK_REMOVED
)))
526 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
527 printf(" rebuilding");
528 } else if (is_rebuilding
&& failed
) {
529 /* Taking a bit of a risk here, we remove the
530 * device from the array, and then put it back.
531 * If this fails, we are rebuilding
533 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
534 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
535 if (err
&& errno
== EBUSY
)
536 printf(" rebuilding");
540 if (disk
.state
== 0) spares
++;
541 if (test
&& d
< array
.raid_disks
542 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
544 if ((dv
=map_dev(disk
.major
, disk
.minor
, 0))) {
547 devices
= realloc(devices
,
548 strlen(devices
)+1+strlen(dv
)+1);
549 strcat(strcat(devices
,","),dv
);
551 devices
= strdup(dv
);
555 if (!brief
) printf("\n");
557 if (spares
&& brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
558 if (brief
&& st
&& st
->sb
)
559 st
->ss
->brief_detail_super(st
);
560 st
->ss
->free_super(st
);
562 if (brief
> 1 && devices
) printf("\n devices=%s", devices
);
563 if (brief
) printf("\n");
565 !enough(array
.level
, array
.raid_disks
, array
.layout
,
566 1, avail
, avail_disks
))
575 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
)
577 /* display platform capabilities for the given metadata format
578 * 'scan' in this context means iterate over all metadata types
583 if (ss
&& ss
->detail_platform
)
584 err
= ss
->detail_platform(verbose
, 0);
587 fprintf(stderr
, Name
": %s metadata is platform independent\n",
588 ss
->name
? : "[no name]");
591 fprintf(stderr
, Name
": specify a metadata type or --scan\n");
597 for (i
= 0; superlist
[i
]; i
++) {
598 struct superswitch
*meta
= superlist
[i
];
603 fprintf(stderr
, Name
": checking metadata %s\n",
604 meta
->name
? : "[no name]");
605 if (!meta
->detail_platform
) {
607 fprintf(stderr
, Name
": %s metadata is platform independent\n",
608 meta
->name
? : "[no name]");
610 err
|= meta
->detail_platform(verbose
, 0);