*nix Thread, Snapserver 4400 - Raid failed in Technical; I have a Snapserver in one of my primary schools where the raid has failed. Any suggestions for getting the ...
5th February 2010, 06:55 AM #1
Snapserver 4400 - Raid failed
I have a Snapserver in one of my primary schools where the raid has failed. Any suggestions for getting the data off it?
I can log on to the web interface. Its raid5 (checksummed). 4 disks and the console shows the status for each drive as ok but the raid status says failed. The event log shows multiple lines of
Raid5: failed to run raid set md0
Any help would be gratefully received.
8th February 2010, 10:56 AM #2
- Rep Power
If the SnapServer 4400 is a Linux box (sounding like it with references to md0)
Linux CD - and some mdadm --assemble might do the trick? (Gentoo Minimal CD usually has mdadm on it)
Use fdisk -l against each should give you a clue as to what partition (e.g. /dev/sda1 /dev/sdb1) - they should all be the same size and hopefully of type 'fd'
Command will look something like
mdadm --assemble /dev/md? /dev/sda? /dev/sdb? /dev/sdc?
If one has failed you only need n-1 discs for RAID 5 to assemble (so if it's three disks then 2) I think you can use the word missing to replace on of the partitions
8th February 2010, 11:38 AM #3
You could try the following to smash the array back together if the above fails:
mdadm --assemble --force /dev/md? /dev/sda? /dev/sdb? /dev/sdc?
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