Now that you mention it I remember to have read somewhere that suberblocks
are written at the end of _partitions_ and not arrays.
Thanks for enlighten me :)
Maybe another stupid question:
# mdadm --detail /dev/md0
/dev/md0:
Version : 00.90.00
Creation Time : Sun May 18 14:19:37 2003
Raid Level : raid5
Array Size : 241254336 (230.08 GiB 247.04 GB)
Device Size : 80418112 (76.69 GiB 82.35 GB)
Raid Devices : 4
Total Devices : 5
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Wed Oct 8 23:53:50 2003
State : dirty, no-errors
Active Devices : 4
Working Devices : 4
Failed Devices : 1
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
0 3 65 0 active sync
/dev/ide/host0/bus0/target1/lun0/part1
1 22 1 1 active sync
/dev/ide/host0/bus1/target0/lun0/part1
2 33 1 2 active sync
/dev/ide/host2/bus0/target0/lun0/part1
3 34 1 3 active sync
/dev/ide/host2/bus1/target0/lun0/part1
UUID : d8e2995c:dac28dbb:042eb748:bad0f5d6
Events : 0.52
It says (or at least I think it says) that this array has 5 devices of which
one is faulty. That's not true, it consists only out of 4 devices.
Victor
rob wrote:
> from my sys:
> root@fbc5:/etc # mdadm --query /dev/md3
> /dev/md3: 4.67GiB raid1 2 devices, 0 spares. Use mdadm --detail for more
> detail.
> /dev/md3: No md super block found, not an md component.
>
> root@fbc5:/etc # mdadm --query /dev/sdd5
> /dev/sdd5: is not an md array
> /dev/sdd5: device 1 in 2 device active raid1 md3. Use mdadm --examine
> for more detail.
>
> so the superblock is not on the /dev/md3 .
>
> query the disk partition to get the superblock
>
> Victor wrote:
>
> >At the time I created the RAID array I thought it had superblocks,
> >however if I use mdadm I get these results:
> >
> ># mdadm --query /dev/md0
> >/dev/md0: 230.08GiB raid5 4 devices, 0 spares. Use mdadm --detail for
> >more detail.
> >/dev/md0: No md super block found, not an md component.
> >
> >If the array really shouldn't have a superblock, is it possible to add
> >one (maybe marking a device faulty and readding it and repeating this
> >for each device)?
> >
> >
> >Thanks in advance,
> >
> >Victor
> >
> >
> >-
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> >
> >
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