[Gllug] I've lost my RAID partition in to the ether.....

[Nick Warrington]

Hi all

I had a little sweaty palm problem last night I was hoping somebody might be
able to shed some light on. About a month ago I set up a little file server
on a old PC. I had two old disks, formatted them as EXT3 and set up an
Software RAID 1 with about a GIGs worth of space for /home. I followed the
howto and everything 'just worked'.

That was until last night when I lost power on the machine and when I
rebooted everything looked very different. The RAID appeared to be recovered
ok, but the contents of the partition was wrong. In fact, the contents
looked like they did before I created the RAID a month ago, and my /home was
not there. I stopped the RAID and mounted them seperately and noticed that
the two disks appeared to have slightly different contents. I could well
believe that what I saw on the two partitions was what was on disks before I
created the RAID'ed /home. All my new data gone, all my old data I thought
had been overwritten, returned! Im sure I have mounted the drives seperatly
before when things were working and seen the correct /home data there.

I am v-puzzled. At where the data is gone, why the two disks appear to have
different contents when mounted seperatly, and why old stuff appears to have
returned. 

Has anyone got any idea how the filesystem may have got screwed. I can
restore from backups but I would prefer to identify why this happened ('cos
my backups are not particularly recent)

Out of interest Im running Mdk9 with a Kernel out of the box.

Nick

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