[mythtv-users] Rebuild raid array ?
Kevin Bailey
keraba at gmail.com
Wed Nov 24 21:09:54 UTC 2010
On Tue, Nov 23, 2010 at 9:07 AM, John Drescher <drescherjm at gmail.com> wrote:
>
> Are all of your arrays type fd in fdisk?
>
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00078e99
Device Boot Start End Blocks Id System
/dev/sdb1 1 124 995998+ 82 Linux swap / Solaris
/dev/sdb2 125 30401 243200002+ fd Linux raid
autodetect
% sudo fdisk -l /dev/sdc
Disk /dev/sdc: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00089a38
Device Boot Start End Blocks Id System
/dev/sdc1 1 124 995998+ 82 Linux swap / Solaris
/dev/sdc2 125 30401 243200002+ fd Linux raid
autodetect
% sudo fdisk -l /dev/sdd
Disk /dev/sdd: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0009874c
Device Boot Start End Blocks Id System
/dev/sdd1 1 124 995998+ 82 Linux swap / Solaris
/dev/sdd2 125 30401 243200002+ fd Linux raid
autodetect
Can you post the output of mdadm -D /dev/md0
>
% sudo mdadm -D /dev/md0
/dev/md0:
Version : 00.90
Creation Time : Sun Sep 14 11:29:41 2008
Raid Level : raid5
Array Size : 729599808 (695.80 GiB 747.11 GB)
Used Dev Size : 243199936 (231.93 GiB 249.04 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Wed Nov 24 21:01:51 2010
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
UUID : 0cf77cbe:fad9f965:a9910174:ed2ec730
Events : 0.190
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 8 18 1 active sync /dev/sdb2
2 8 34 2 active sync /dev/sdc2
3 8 50 3 active sync /dev/sdd2
> And mdadm -E /dev/sda2
> mdadm -E /dev/sdb2
> mdadm -E /dev/sdc2
> mdadm -E /dev/sdd2
>
% sudo mdadm -E /dev/sda2
/dev/sda2:
Magic : a92b4efc
Version : 00.90.00
UUID : 0cf77cbe:fad9f965:a9910174:ed2ec730
Creation Time : Sun Sep 14 11:29:41 2008
Raid Level : raid5
Used Dev Size : 243199936 (231.93 GiB 249.04 GB)
Array Size : 729599808 (695.80 GiB 747.11 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Wed Nov 24 21:06:08 2010
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : ebf6f415 - correct
Events : 190
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 0 8 2 0 active sync /dev/sda2
0 0 8 2 0 active sync /dev/sda2
1 1 8 18 1 active sync /dev/sdb2
2 2 8 34 2 active sync /dev/sdc2
3 3 8 50 3 active sync /dev/sdd2
% sudo mdadm -E /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
UUID : 0cf77cbe:fad9f965:a9910174:ed2ec730
Creation Time : Sun Sep 14 11:29:41 2008
Raid Level : raid5
Used Dev Size : 243199936 (231.93 GiB 249.04 GB)
Array Size : 729599808 (695.80 GiB 747.11 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Wed Nov 24 21:06:08 2010
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : ebf6f427 - correct
Events : 190
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 1 8 18 1 active sync /dev/sdb2
0 0 8 2 0 active sync /dev/sda2
1 1 8 18 1 active sync /dev/sdb2
2 2 8 34 2 active sync /dev/sdc2
3 3 8 50 3 active sync /dev/sdd2
% sudo mdadm -E /dev/sdc2
/dev/sdc2:
Magic : a92b4efc
Version : 00.90.00
UUID : 0cf77cbe:fad9f965:a9910174:ed2ec730
Creation Time : Sun Sep 14 11:29:41 2008
Raid Level : raid5
Used Dev Size : 243199936 (231.93 GiB 249.04 GB)
Array Size : 729599808 (695.80 GiB 747.11 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Wed Nov 24 21:06:08 2010
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : ebf6f439 - correct
Events : 190
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 2 8 34 2 active sync /dev/sdc2
0 0 8 2 0 active sync /dev/sda2
1 1 8 18 1 active sync /dev/sdb2
2 2 8 34 2 active sync /dev/sdc2
3 3 8 50 3 active sync /dev/sdd2
% sudo mdadm -E /dev/sdd2
/dev/sdd2:
Magic : a92b4efc
Version : 00.90.00
UUID : 0cf77cbe:fad9f965:a9910174:ed2ec730
Creation Time : Sun Sep 14 11:29:41 2008
Raid Level : raid5
Used Dev Size : 243199936 (231.93 GiB 249.04 GB)
Array Size : 729599808 (695.80 GiB 747.11 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Wed Nov 24 21:06:08 2010
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : ebf6f44b - correct
Events : 190
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 3 8 50 3 active sync /dev/sdd2
0 0 8 2 0 active sync /dev/sda2
1 1 8 18 1 active sync /dev/sdb2
2 2 8 34 2 active sync /dev/sdc2
3 3 8 50 3 active sync /dev/sdd2
And cat /proc/mdstat
>
% cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdb2[1] sdc2[2] sda2[0] sdd2[3]
729599808 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU]
unused devices: <none>
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