[Ldsoss] OT: RAID5 recovery issues

[Richard Smith]

Well, I've just had a motherboard die on me, in my kubuntu-amd64 system.
This was after I had managed to recover my RAID array (one member got lost..
somehow no md superblock it said), but before starting to fix some sort of
upgraded udev weirdness.  This array was housing my music, photos, email,
etc, all the stuff you don't want to lose. Managed to get things mounted and
checked before I got too tired to continue.  I had set up 4 disks in a RAID5
array, so that I wouldn't lose data if one drive died.  The Hard drives were
old, but the other bits of the computer are less than 18 months old. I
didn't expect the motherboard to go kaput, and since it's a 754, a
replacement board is a bit harder to come by.  Oh, it's a software raid,
made with mdadm, with a LVM group on top of it.  Now, I've got a spare
system that should POST fine, but it's an old 650 MHZ Athlon, and buried
somewhere hard to get to.  Would I be able to access this RAID to recover
stuff, even though the filesystem was set up using tools compiled to run on
64 bits?   Has anything similar happened to anyone else, and can you give me
bits of advice?  Also.. if I am able to recover stuff, should I migrate the
system onto a single drive large enough to house my current system? (raid
array was nowhere near full when this whole mess started).

Any thoughts welcome.

-Richard

-- 
Penguin Migration Computer Services
Every home should have a Penguin
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