]>
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=");
211 print_escape(mp
->path
+8);
215 if (st
->ss
->export_detail_super
)
216 st
->ss
->export_detail_super(st
);
218 struct map_ent
*mp
, *map
= NULL
;
220 mp
= map_by_devnum(&map
, fd2devnum(fd
));
222 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
223 printf("MD_UUID=%s\n", nbuf
+5);
225 if (mp
&& mp
->path
&&
226 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
227 printf("MD_DEVNAME=");
228 print_escape(mp
->path
+8);
235 disks
= xmalloc(max_disks
* sizeof(mdu_disk_info_t
));
236 for (d
= 0; d
< max_disks
; d
++) {
237 disks
[d
].state
= (1<<MD_DISK_REMOVED
);
238 disks
[d
].major
= disks
[d
].minor
= 0;
239 disks
[d
].number
= disks
[d
].raid_disk
= d
;
242 next
= array
.raid_disks
*2;
243 for (d
= 0; d
< max_disks
; d
++) {
244 mdu_disk_info_t disk
;
246 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
247 if (d
< array
.raid_disks
)
248 pr_err("cannot get device detail for device %d: %s\n",
252 if (disk
.major
== 0 && disk
.minor
== 0)
254 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
255 && disks
[disk
.raid_disk
*2].state
== (1<<MD_DISK_REMOVED
))
256 disks
[disk
.raid_disk
*2] = disk
;
257 else if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
258 && disks
[disk
.raid_disk
*2+1].state
== (1<<MD_DISK_REMOVED
))
259 disks
[disk
.raid_disk
*2+1] = disk
;
260 else if (next
< max_disks
)
261 disks
[next
++] = disk
;
264 avail
= xcalloc(array
.raid_disks
, 1);
266 for (d
= 0; d
< array
.raid_disks
; d
++) {
268 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
269 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
276 mdu_bitmap_file_t bmf
;
277 printf("ARRAY %s", dev
);
279 if (array
.raid_disks
)
280 printf(" level=%s num-devices=%d",
284 printf(" level=container num-devices=%d",
288 printf(" container=%s", container
);
289 printf(" member=%s", member
);
291 if (sra
&& sra
->array
.major_version
< 0)
292 printf(" metadata=%s", sra
->text_version
);
294 printf(" metadata=%d.%d",
295 array
.major_version
, array
.minor_version
);
298 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
300 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
302 printf(" bitmap=%s", bmf
.pathname
);
305 mdu_bitmap_file_t bmf
;
306 unsigned long long larray_size
;
307 struct mdstat_ent
*ms
= mdstat_read(0, 0);
308 struct mdstat_ent
*e
;
309 int devnum
= array
.md_minor
;
310 if (major(stb
.st_rdev
) == (unsigned)get_mdp_major())
311 devnum
= -1 - devnum
;
313 for (e
=ms
; e
; e
=e
->next
)
314 if (e
->devnum
== devnum
)
316 if (!get_dev_size(fd
, NULL
, &larray_size
))
319 printf("%s:\n", dev
);
322 printf(" Container : %s, member %s\n", container
, member
);
324 if (sra
&& sra
->array
.major_version
< 0)
325 printf(" Version : %s\n", sra
->text_version
);
327 printf(" Version : %d.%d\n",
328 array
.major_version
, array
.minor_version
);
333 printf(" Creation Time : %.24s\n", ctime(&atime
));
334 if (array
.raid_disks
== 0)
336 printf(" Raid Level : %s\n", str
?str
:"-unknown-");
338 printf(" Array Size : %llu%s\n", (larray_size
>>10),
339 human_size(larray_size
));
340 if (array
.level
>= 1) {
341 if (array
.major_version
!= 0 &&
342 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
343 unsigned long long dsize
= get_component_size(fd
);
345 printf(" Used Dev Size : %llu%s\n",
347 human_size((long long)dsize
<<9));
349 printf(" Used Dev Size : unknown\n");
351 printf(" Used Dev Size : %d%s\n", array
.size
,
352 human_size((long long)array
.size
<<10));
354 if (array
.raid_disks
)
355 printf(" Raid Devices : %d\n", array
.raid_disks
);
356 printf(" Total Devices : %d\n", array
.nr_disks
);
358 ((sra
== NULL
&& array
.major_version
== 0) ||
359 (sra
&& sra
->array
.major_version
== 0)))
360 printf("Preferred Minor : %d\n", array
.md_minor
);
361 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
362 printf(" Persistence : Superblock is %spersistent\n",
363 array
.not_persistent
?"not ":"");
365 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
367 ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 &&
369 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
371 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
372 printf(" Intent Bitmap : Internal\n\n");
375 printf(" Update Time : %.24s\n", ctime(&atime
));
376 if (array
.raid_disks
) {
377 static char *sync_action
[] = {
378 ", recovering", ", resyncing",
379 ", reshaping", ", checking" };
381 if (avail_disks
== array
.raid_disks
)
383 else if (!enough(array
.level
, array
.raid_disks
,
384 array
.layout
, 1, avail
))
389 printf(" State : %s%s%s%s%s%s \n",
390 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"active", st
,
391 (!e
|| (e
->percent
< 0 && e
->percent
!= RESYNC_PENDING
&&
392 e
->percent
!= RESYNC_DELAYED
)) ? "" : sync_action
[e
->resync
],
393 larray_size
? "": ", Not Started",
394 e
->percent
== RESYNC_DELAYED
? " (DELAYED)": "",
395 e
->percent
== RESYNC_PENDING
? " (PENDING)": "");
397 if (array
.raid_disks
)
398 printf(" Active Devices : %d\n", array
.active_disks
);
399 printf("Working Devices : %d\n", array
.working_disks
);
400 if (array
.raid_disks
) {
401 printf(" Failed Devices : %d\n", array
.failed_disks
);
402 printf(" Spare Devices : %d\n", array
.spare_disks
);
405 if (array
.level
== 5) {
406 str
= map_num(r5layout
, array
.layout
);
407 printf(" Layout : %s\n", str
?str
:"-unknown-");
409 if (array
.level
== 6) {
410 str
= map_num(r6layout
, array
.layout
);
411 printf(" Layout : %s\n", str
?str
:"-unknown-");
413 if (array
.level
== 10) {
415 print_r10_layout(array
.layout
);
418 switch (array
.level
) {
424 if (array
.chunk_size
)
425 printf(" Chunk Size : %dK\n\n",
426 array
.chunk_size
/1024);
429 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
434 if (e
&& e
->percent
>= 0) {
435 static char *sync_action
[] = {
438 printf(" %7s Status : %d%% complete\n", sync_action
[e
->resync
], e
->percent
);
443 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
445 This is pretty boring
446 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info
->reshape_progress
<<9,
447 human_size((unsigned long long)info
->reshape_progress
<<9));
449 if (info
->delta_disks
!= 0)
450 printf(" Delta Devices : %d, (%d->%d)\n",
452 array
.raid_disks
- info
->delta_disks
,
454 if (info
->new_level
!= array
.level
) {
455 str
= map_num(pers
, info
->new_level
);
456 printf(" New Level : %s\n", str
?str
:"-unknown-");
458 if (info
->new_level
!= array
.level
||
459 info
->new_layout
!= array
.layout
) {
460 if (info
->new_level
== 5) {
461 str
= map_num(r5layout
, info
->new_layout
);
462 printf(" New Layout : %s\n",
463 str
?str
:"-unknown-");
465 if (info
->new_level
== 6) {
466 str
= map_num(r6layout
, info
->new_layout
);
467 printf(" New Layout : %s\n",
468 str
?str
:"-unknown-");
470 if (info
->new_level
== 10) {
471 printf(" New Layout : near=%d, %s=%d\n",
472 info
->new_layout
&255,
473 (info
->new_layout
&0x10000)?"offset":"far",
474 (info
->new_layout
>>8)&255);
477 if (info
->new_chunk
!= array
.chunk_size
)
478 printf(" New Chunksize : %dK\n", info
->new_chunk
/1024);
480 } else if (e
&& e
->percent
>= 0)
483 st
->ss
->detail_super(st
, c
->homehost
);
485 if (array
.raid_disks
== 0 && sra
&& sra
->array
.major_version
== -1
486 && sra
->array
.minor_version
== -2 && sra
->text_version
[0] != '/') {
487 /* This looks like a container. Find any active arrays
488 * That claim to be a member.
490 DIR *dir
= opendir("/sys/block");
493 printf(" Member Arrays :");
495 while (dir
&& (de
= readdir(dir
)) != NULL
) {
498 int nlen
= strlen(sra
->sys_name
);
500 if (de
->d_name
[0] == '.')
502 sprintf(path
, "/sys/block/%s/md/metadata_version",
504 if (load_sys(path
, vbuf
) < 0)
506 if (strncmp(vbuf
, "external:", 9) != 0 ||
507 !is_subarray(vbuf
+9) ||
508 strncmp(vbuf
+10, sra
->sys_name
, nlen
) != 0 ||
509 vbuf
[10+nlen
] != '/')
511 dn
= devname2devnum(de
->d_name
);
512 printf(" %s", map_dev_preferred(
514 dev2minor(dn
), 1, c
->prefer
));
521 if (array
.raid_disks
)
522 printf(" Number Major Minor RaidDevice State\n");
524 printf(" Number Major Minor RaidDevice\n");
528 for (d
= 0; d
< max_disks
; d
++) {
530 mdu_disk_info_t disk
= disks
[d
];
532 if (d
>= array
.raid_disks
*2 &&
541 if (d
== array
.raid_disks
*2) printf("\n");
542 if (disk
.raid_disk
< 0)
543 printf(" %5d %5d %5d - ",
544 disk
.number
, disk
.major
, disk
.minor
);
546 printf(" %5d %5d %5d %5d ",
547 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
549 if (!c
->brief
&& array
.raid_disks
) {
551 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
553 if (disk
.raid_disk
< array
.raid_disks
&&
557 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
558 if (disk
.state
& (1<<MD_DISK_SYNC
)) {
560 if (array
.level
== 10 && (array
.layout
& ~0x1FFFF) == 0) {
561 int nc
= array
.layout
& 0xff;
562 int fc
= (array
.layout
>> 8) & 0xff;
564 if (fc
== 1 && array
.raid_disks
% copies
== 0 && copies
<= 26) {
565 /* We can divide the devices into 'sets' */
566 int set
= disk
.raid_disk
% copies
;
567 printf(" set-%c", set
+ 'A');
571 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
572 if (disk
.state
& (1<<MD_DISK_WRITEMOSTLY
)) printf(" writemostly");
574 ((1<<MD_DISK_ACTIVE
)|(1<<MD_DISK_SYNC
)
575 |(1<<MD_DISK_REMOVED
)|(1<<MD_DISK_FAULTY
)))
579 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
580 printf(" rebuilding");
581 } else if (is_rebuilding
&& failed
) {
582 /* Taking a bit of a risk here, we remove the
583 * device from the array, and then put it back.
584 * If this fails, we are rebuilding
586 int err
= ioctl(fd
, HOT_REMOVE_DISK
, makedev(disk
.major
, disk
.minor
));
587 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, makedev(disk
.major
, disk
.minor
));
588 if (err
&& errno
== EBUSY
)
589 printf(" rebuilding");
593 if (disk
.state
== 0) spares
++;
594 if (c
->test
&& d
< array
.raid_disks
595 && !(disk
.state
& (1<<MD_DISK_SYNC
)))
597 dv
=map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
601 devices
= xrealloc(devices
,
602 strlen(devices
)+1+strlen(dv
)+1);
603 strcat(strcat(devices
,","),dv
);
605 devices
= xstrdup(dv
);
609 if (!c
->brief
) printf("\n");
611 if (spares
&& c
->brief
&& array
.raid_disks
) printf(" spares=%d", spares
);
612 if (c
->brief
&& st
&& st
->sb
)
613 st
->ss
->brief_detail_super(st
);
615 st
->ss
->free_super(st
);
617 if (c
->brief
> 1 && devices
) printf("\n devices=%s", devices
);
621 !enough(array
.level
, array
.raid_disks
, array
.layout
,
634 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
636 /* display platform capabilities for the given metadata format
637 * 'scan' in this context means iterate over all metadata types
642 if (ss
&& export
&& ss
->export_detail_platform
)
643 err
= ss
->export_detail_platform(verbose
, controller_path
);
644 else if (ss
&& ss
->detail_platform
)
645 err
= ss
->detail_platform(verbose
, 0, controller_path
);
648 pr_err("%s metadata is platform independent\n",
649 ss
->name
? : "[no name]");
652 pr_err("specify a metadata type or --scan\n");
659 for (i
= 0; superlist
[i
]; i
++) {
660 struct superswitch
*meta
= superlist
[i
];
665 pr_err("checking metadata %s\n",
666 meta
->name
? : "[no name]");
667 if (!meta
->detail_platform
) {
669 pr_err("%s metadata is platform independent\n",
670 meta
->name
? : "[no name]");
671 } else if (export
&& meta
->export_detail_platform
) {
672 err
|= meta
->export_detail_platform(verbose
, controller_path
);
674 err
|= meta
->detail_platform(verbose
, 0, controller_path
);