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Then this guy named murphy came by, and he told me that if something goes wrong you won't have a clue what happened or how it happened. And Damnit he was right. The bearings on my power supply fan went bad and the noise was driving me mad, so I halted my fileserver and put in a new power supply (I didn't have any spare fans laying around, but I did have a new power supply laying around). When I turned my fileserver back on the Raid didn't come up. When I turned my fileserver back on the Raid
didn't come up. Running:
raidstart /dev/md0
yeilded:
md: array md0 already exists!
So I:
raidstop /dev/md0
raidstart /dev/md0
and I got:
/dev/md0: Invalid argument
looking in dmesg it showed more detail:
[events: 00000000]
md: invalid raid superblock magic on ide/host2/bus0/target0/lun0/part1
md: ide/host2/bus0/target0/lun0/part1 has invalid sb, not importing!
md: could not import ide/host2/bus0/target0/lun0/part1!
md: autostart ide/host2/bus0/target0/lun0/part1 failed!
I did an lsmod to verify that the appropriate raid drivers were loaded, and they were. The disks are fine, both show up in the bios search and under /proc. cat'ing the drives produced copious amounts of binary gobbly gook which is nice. I know my /etc/raidtab is fine (I will include it anyway) because this has been working for the past month since I first built this raid array. Any suggestions/pointers on how to recover this raid array without loss of data?
here is the relevent parts of my /etc/raidtab and /etc/fstab
I stuck a Knoppix (3.3) disk in to see if I could get it to work. Well it didn't work... But I got a bit more usefull info out of dmesg using knoppix.
<Snip from Previous Post>
[events: 00000000]
md: invalid raid superblock magic on ide/host2/bus0/target0/lun0/part1
md: ide/host2/bus0/target0/lun0/part1 has invalid sb, not importing!
md: could not import ide/host2/bus0/target0/lun0/part1!
md: autostart ide/host2/bus0/target0/lun0/part1 failed!
</Snip from Previous Post>
really means:
[events: 00000000]
md: invalid raid superblock magic on hde1
md: hde1 has invalid sb, not importing!
md: could not import hde1!
md: autostart hde1 failed!
I still would like to get this raid back up without repartitioning/rebuilding-raid/reformating and loosing all of my data in the process. Any help, insight, or RTFMs follow by links to a helpfull manual would be greatly appreciated.
I wouldnt doubt this is realtated to an improper/poor voltage output of your power supply.
I would buy a brand new power supply rated for your mobo and hook it up.
I highly doubt it is a problem with the power supply, as the old power supply was a 230W power supply (the box is a P2-400 MHz), and the new power supply is a 420W. And I do mean it is new, as in brand new out of the box. I bought it a year ago to fix another computer and ended up not using it. If I don't figure it out soon I will replace the old power supply with a new fan and see if that works, but the odds are low.
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