]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2012 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
, struct context
*c
)
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
= c
->test
? 4 : 1;
64 pr_err("cannot open %s: %s\n",
65 dev
, strerror(errno
));
68 vers
= md_get_version(fd
);
70 pr_err("%s does not appear to be an md device\n",
76 pr_err("cannot get detail for md device %s: driver version too old.\n",
81 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)<0) {
83 pr_err("md device %s does not appear to be active.\n",
86 pr_err("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
;
102 /* This is a subarray of some container.
103 * We want the name of the container, and the member
105 int dn
= st
->container_dev
;
108 container
= map_dev_preferred(dev2major(dn
), dev2minor(dn
), 1, c
->prefer
);
111 /* try to load a superblock */
112 if (st
) for (d
= 0; d
< max_disks
; d
++) {
113 mdu_disk_info_t disk
;
118 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0)
120 if (d
>= array
.raid_disks
&&
125 if (array
.raid_disks
> 0 &&
126 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
129 dv
= map_dev(disk
.major
, disk
.minor
, 1);
133 fd2
= dev_open(dv
, O_RDONLY
);
138 st
->ss
->free_super(st
);
140 err
= st
->ss
->load_super(st
, fd2
, NULL
);
147 info
= st
->ss
->container_content(st
, subarray
);
149 info
= xmalloc(sizeof(*info
));
150 st
->ss
->getinfo_super(st
, info
, NULL
);
155 if (array
.raid_disks
!= 0 && /* container */
156 (info
->array
.ctime
!= array
.ctime
||
157 info
->array
.level
!= array
.level
)) {
158 st
->ss
->free_super(st
);
161 /* some formats (imsm) have free-floating-spares
162 * with a uuid of uuid_zero, they don't
163 * have very good info about the rest of the
164 * container, so keep searching when
165 * encountering such a device. Otherwise, stop
166 * after the first successful call to
169 if (memcmp(uuid_zero
,
171 sizeof(uuid_zero
)) == 0) {
172 st
->ss
->free_super(st
);
178 /* Ok, we have some info to print... */
179 str
= map_num(pers
, array
.level
);
182 if (array
.raid_disks
) {
184 printf("MD_LEVEL=%s\n", str
);
185 printf("MD_DEVICES=%d\n", array
.raid_disks
);
187 printf("MD_LEVEL=container\n");
188 printf("MD_DEVICES=%d\n", array
.nr_disks
);
191 printf("MD_CONTAINER=%s\n", container
);
192 printf("MD_MEMBER=%s\n", member
);
194 if (sra
&& sra
->array
.major_version
< 0)
195 printf("MD_METADATA=%s\n", sra
->text_version
);
197 printf("MD_METADATA=%d.%d\n",
198 array
.major_version
, array
.minor_version
);
201 if (st
&& st
->sb
&& info
) {
203 struct map_ent
*mp
, *map
= NULL
;
205 fname_from_uuid(st
, info
, nbuf
, ':');
206 printf("MD_UUID=%s\n", nbuf
+5);
207 mp
= map_by_uuid(&map
, info
->uuid
);
208 if (mp
&& mp
->path
&&
209 strncmp(mp
->path
, "/dev/md/", 8) == 0)
210 printf("MD_DEVNAME=%s\n", mp
->path
+8);
212 if (st
->ss
->export_detail_super
)
213 st
->ss
->export_detail_super(st
);
215 struct map_ent
*mp
, *map
= NULL
;
217 mp
= map_by_devnum(&map
, fd2devnum(fd
));
219 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
220 printf("MD_UUID=%s\n", nbuf
+5);
222 if (mp
&& mp
->path
&&
223 strncmp(mp
->path
, "/dev/md/", 8) == 0)
224 printf("MD_DEVNAME=%s\n", mp
->path
+8);
229 disks
= xmalloc(max_disks
* sizeof(mdu_disk_info_t
));
230 for (d
= 0; d
< max_disks
; d
++) {
231 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
232 disks
[d
].major
= disks
[d
].minor
= 0;
233 disks
[d
].number
= disks
[d
].raid_disk
= d
;
236 next
= array
.raid_disks
;
237 for (d
= 0; d
< max_disks
; d
++) {
238 mdu_disk_info_t disk
;
240 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
241 if (d
< array
.raid_disks
)
242 pr_err("cannot get device detail for device %d: %s\n",
246 if (disk
.major
== 0 && disk
.minor
== 0)
248 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
)
249 disks
[disk
.raid_disk
] = disk
;
250 else if (next
< max_disks
)
251 disks
[next
++] = disk
;
254 avail
= xcalloc(array
.raid_disks
, 1);
256 for (d
= 0; d
< array
.raid_disks
; d
++) {
257 mdu_disk_info_t disk
= disks
[d
];
259 if ((disk
.state
& (1<<MD_DISK_SYNC
))) {
266 mdu_bitmap_file_t bmf
;
267 printf("ARRAY %s", dev
);
269 if (array
.raid_disks
)
270 printf(" level=%s num-devices=%d",
274 printf(" level=container num-devices=%d",
278 printf(" container=%s", container
);
279 printf(" member=%s", member
);
281 if (sra
&& sra
->array
.major_version
< 0)
282 printf(" metadata=%s", sra
->text_version
);
284 printf(" metadata=%d.%d",
285 array
.major_version
, array
.minor_version
);
288 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
290 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
292 printf(" bitmap=%s", bmf
.pathname
);
295 mdu_bitmap_file_t bmf
;
296 unsigned long long larray_size
;
297 struct mdstat_ent
*ms
= mdstat_read(0, 0);
298 struct mdstat_ent
*e
;
299 int devnum
= array
.md_minor
;
300 if (major(stb
.st_rdev
) == (unsigned)get_mdp_major())
301 devnum
= -1 - devnum
;
303 for (e
=ms
; e
; e
=e
->next
)
304 if (e
->devnum
== devnum
)
306 if (!get_dev_size(fd
, NULL
, &larray_size
))
309 printf("%s:\n", dev
);
312 printf(" Container : %s, member %s\n", container
, member
);
314 if (sra
&& sra
->array
.major_version
< 0)
315 printf(" Version : %s\n", sra
->text_version
);
317 printf(" Version : %d.%d\n",
318 array
.major_version
, array
.minor_version
);
323 printf(" Creation Time : %.24s\n", ctime(&atime
));
324 if (array
.raid_disks
== 0)
326 printf(" Raid Level : %s\n", str
?str
:"-unknown-");
328 printf(" Array Size : %llu%s\n", (larray_size
>>10),
329 human_size(larray_size
));
330 if (array
.level
>= 1) {
331 if (array
.major_version
!= 0 &&
332 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
333 unsigned long long dsize
= get_component_size(fd
);
335 printf(" Used Dev Size : %llu%s\n",
337 human_size((long long)dsize
<<9));
339 printf(" Used Dev Size : unknown\n");
341 printf(" Used Dev Size : %d%s\n", array
.size
,
342 human_size((long long)array
.size
<<10));
344 if (array
.raid_disks
)
345 printf(" Raid Devices : %d\n", array
.raid_disks
);
346 printf(" Total Devices : %d\n", array
.nr_disks
);
348 ((sra
== NULL
&& array
.major_version
== 0) ||
349 (sra
&& sra
->array
.major_version
== 0)))
350 printf("Preferred Minor : %d\n", array
.md_minor
);
351 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
352 printf(" Persistence : Superblock is %spersistent\n",
353 array
.not_persistent
?"not ":"");
355 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
357 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
359 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
361 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
362 printf(" Intent Bitmap : Internal\n\n");
365 printf(" Update Time : %.24s\n", ctime(&atime
));
366 if (array
.raid_disks
) {
367 static char *sync_action
[] = {
368 ", recovering", ", resyncing",
369 ", reshaping", ", checking" };
371 if (avail_disks
== array
.raid_disks
)
373 else if (!enough(array
.level
, array
.raid_disks
,
374 array
.layout
, 1, avail
))
379 printf(" State : %s%s%s%s%s%s \n",
380 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active", st
,
381 (!e
|| (e
->percent
< 0 && e
->percent
!= RESYNC_PENDING
&&
382 e
->percent
!= RESYNC_DELAYED
)) ? "" : sync_action
[e
->resync
],
383 larray_size
? "": ", Not Started",
384 e
->percent
== RESYNC_DELAYED
? " (DELAYED)": "",
385 e
->percent
== RESYNC_PENDING
? " (PENDING)": "");
387 if (array
.raid_disks
)
388 printf(" Active Devices : %d\n", array
.active_disks
);
389 printf("Working Devices : %d\n", array
.working_disks
);
390 if (array
.raid_disks
) {
391 printf(" Failed Devices : %d\n", array
.failed_disks
);
392 printf(" Spare Devices : %d\n", array
.spare_disks
);
395 if (array
.level
== 5) {
396 str
= map_num(r5layout
, array
.layout
);
397 printf(" Layout : %s\n", str
?str
:"-unknown-");
399 if (array
.level
== 6) {
400 str
= map_num(r6layout
, array
.layout
);
401 printf(" Layout : %s\n", str
?str
:"-unknown-");
403 if (array
.level
== 10) {
405 print_r10_layout(array
.layout
);
408 switch (array
.level
) {
414 if (array
.chunk_size
)
415 printf(" Chunk Size : %dK\n\n",
416 array
.chunk_size
/1024);
419 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
424 if (e
&& e
->percent
>= 0) {
425 static char *sync_action
[] = {
428 printf(" %7s Status : %d%% complete\n", sync_action
[e
->resync
], e
->percent
);
433 if (st
->sb
&& info
->reshape_active
) {
435 This is pretty boring
436 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
->reshape_progress
<<9,
437 human_size((unsigned long long)info
->reshape_progress
<<9));
439 if (info
->delta_disks
!= 0)
440 printf(" Delta Devices : %d, (%d->%d)\n",
442 array
.raid_disks
- info
->delta_disks
,
444 if (info
->new_level
!= array
.level
) {
445 str
= map_num(pers
, info
->new_level
);
446 printf(" New Level : %s\n", str
?str
:"-unknown-");
448 if (info
->new_level
!= array
.level
||
449 info
->new_layout
!= array
.layout
) {
450 if (info
->new_level
== 5) {
451 str
= map_num(r5layout
, info
->new_layout
);
452 printf(" New Layout : %s\n",
453 str
?str
:"-unknown-");
455 if (info
->new_level
== 6) {
456 str
= map_num(r6layout
, info
->new_layout
);
457 printf(" New Layout : %s\n",
458 str
?str
:"-unknown-");
460 if (info
->new_level
== 10) {
461 printf(" New Layout : near=%d, %s=%d\n",
462 info
->new_layout
&255,
463 (info
->new_layout
&0x10000)?"offset":"far",
464 (info
->new_layout
>>8)&255);
467 if (info
->new_chunk
!= array
.chunk_size
)
468 printf(" New Chunksize : %dK\n", info
->new_chunk
/1024);
470 } else if (e
&& e
->percent
>= 0)
473 st
->ss
->detail_super(st
, c
->homehost
);
475 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
476 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
477 /* This looks like a container. Find any active arrays
478 * That claim to be a member.
480 DIR *dir
= opendir("/sys/block");
483 printf(" Member Arrays :");
485 while (dir
&& (de
= readdir(dir
)) != NULL
) {
488 int nlen
= strlen(sra
->sys_name
);
490 if (de
->d_name
[0] == '.')
492 sprintf(path
, "/sys/block/%s/md/metadata_version",
494 if (load_sys(path
, vbuf
) < 0)
496 if (strncmp(vbuf
, "external:", 9) != 0 ||
497 !is_subarray(vbuf
+9) ||
498 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
499 vbuf
[10+nlen
] != '/')
501 dn
= devname2devnum(de
->d_name
);
502 printf(" %s", map_dev_preferred(
504 dev2minor(dn
), 1, c
->prefer
));
511 if (array
.raid_disks
)
512 printf(" Number Major Minor RaidDevice State\n");
514 printf(" Number Major Minor RaidDevice\n");
518 for (d
= 0; d
< max_disks
; d
++) {
520 mdu_disk_info_t disk
= disks
[d
];
522 if (d
>= array
.raid_disks
&&
527 if (d
== array
.raid_disks
) printf("\n");
528 if (disk
.raid_disk
< 0)
529 printf(" %5d %5d %5d - ",
530 disk
.number
, disk
.major
, disk
.minor
);
532 printf(" %5d %5d %5d %5d ",
533 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
535 if (!c
->brief
&& array
.raid_disks
) {
537 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
539 if (disk
.raid_disk
< array
.raid_disks
&&
543 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
544 if (disk
.state
& (1<<MD_DISK_SYNC
)) {
546 if (array
.level
== 10 && (array
.layout
& ~0x1FFFF) == 0) {
547 int nc
= array
.layout
& 0xff;
548 int fc
= (array
.layout
>> 8) & 0xff;
550 if (array
.raid_disks
% copies
== 0 && copies
<= 26) {
551 /* We can divide the devices into 'sets' */
552 int set
= disk
.raid_disk
% copies
;
553 printf(" set-%c", set
+ 'A');
557 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
558 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
560 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)|(1<<MD_DISK_REMOVED
)))
564 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
565 printf(" rebuilding");
566 } else if (is_rebuilding
&& failed
) {
567 /* Taking a bit of a risk here, we remove the
568 * device from the array, and then put it back.
569 * If this fails, we are rebuilding
571 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
572 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
573 if (err
&& errno
== EBUSY
)
574 printf(" rebuilding");
578 if (disk
.state
== 0) spares
++;
579 if (c
->test
&& d
< array
.raid_disks
580 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
582 dv
=map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
586 devices
= xrealloc(devices
,
587 strlen(devices
)+1+strlen(dv
)+1);
588 strcat(strcat(devices
,","),dv
);
590 devices
= xstrdup(dv
);
594 if (!c
->brief
) printf("\n");
596 if (spares
&& c
->brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
597 if (c
->brief
&& st
&& st
->sb
)
598 st
->ss
->brief_detail_super(st
);
599 st
->ss
->free_super(st
);
601 if (c
->brief
> 1 && devices
) printf("\n devices=%s", devices
);
605 !enough(array
.level
, array
.raid_disks
, array
.layout
,
618 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
)
620 /* display platform capabilities for the given metadata format
621 * 'scan' in this context means iterate over all metadata types
626 if (ss
&& ss
->detail_platform
)
627 err
= ss
->detail_platform(verbose
, 0);
630 pr_err("%s metadata is platform independent\n",
631 ss
->name
? : "[no name]");
634 pr_err("specify a metadata type or --scan\n");
640 for (i
= 0; superlist
[i
]; i
++) {
641 struct superswitch
*meta
= superlist
[i
];
646 pr_err("checking metadata %s\n",
647 meta
->name
? : "[no name]");
648 if (!meta
->detail_platform
) {
650 pr_err("%s metadata is platform independent\n",
651 meta
->name
? : "[no name]");
653 err
|= meta
->detail_platform(verbose
, 0);