raid - superblock problem?
Hi, can someone help me understand this problem about disks/raid/superblocks
I have a sw raid5, tree IDE disks that is split up to md0/ md1/ md2/, ext3
filesystem.
They are all in fstab and autostarts just fine. but...
if I do :
ns01:~# mdadm --detail /dev/md0
/dev/md0:
Version : 00.90.01
Creation Time : Thu Dec 22 06:23:13 2005
Raid Level : raid5
Array Size : 48821248 (46.56 GiB 49.99 GB)
Device Size : 24410624 (23.28 GiB 25.00 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Fri Dec 30 00:18:42 2005
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
UUID : 6d2dadcf:013b706c:4138686d:94f45902
Events : 0.38448
Number Major Minor RaidDevice State
0 3 69 0 active sync /dev/hdb5
1 22 5 1 active sync /dev/hdc5
2 22 69 2 active sync /dev/hdd5
ns01:~#
Here it says "Superblock is persistent", and if I do:
ns01:~# mdadm -Q /dev/md0
/dev/md0: 46.56GiB raid5 3 devices, 0 spares. Use mdadm --detail for more
detail.
/dev/md0: No md super block found, not an md component.
ns01:~#
and
ns01:~# mdadm -E /dev/md0
mdadm: No super block found on /dev/md0 (Expected magic a92b4efc, got
00000000)
ns01:~#
Hwat does it mean that super block is not found? I have googled a lot
around but is not able to find out if or what to do.
Im running stable, kernel-image-2.6.8-2-686 2.6.8-16sarge1. Ihave also
tryed kernel-image-2.6.8-2-386 2.6.8-16sarge1.
It is tha same for md0-3, but they are mounted and running.
Please help
--
/ernst-magne
**Whishes U all Merry Xmas**
**and a Happy New Year**
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