On 06/07/2009 07:44 AM, Gaute Lund wrote:
Thanks again Clyde, Geoff and f-lvm@media.mit.edu and others who gave
advice. Turns out it was a RAM issue.
Just to close off this threadm, even if it's old. This is "only" a
private/testing box, and I've been busy, so I've only been able to
test stuff every now and then.
A few runs of memtest86 found no errors. I turned to the "md5sums of
parts of disks" approach. If I read large chunks (5 GB), from
different places on the disks, with 5+ iterations with each chunk, I
got errors occasionally (diverging md5sums). But this is 10 disks
across two controllers and all but two gave errors several times,
albeit seldomly.
I started swapping hardware, and with different RAM I am OK. I guess
clean runs of memtest shouldn't be trusted 100%. I can even say, the
way these errors have crept up on me gradually over months(!), it
means the RAM stick(s) have failed gradually, without being touched or
anything. Scary!
<snip>
FWIW, there is a bad version of memtest out there. I don't recall the
version number and don't recall the problem, but, for you, its moot.
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