Re: [linux-lvm] Random file system errors

["Clyde E. Kunkel" <rascal jumper-747 cox net>]

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.