On 05/26/2011 06:18 AM, Scott Marlowe wrote:
> On Wed, May 25, 2011 at 4:07 PM, John Rouillard<rouilj@renesys.com> wrote:
>> Well I am also managing to panic the kernel on some runs as well. So
>> my guess is this is not only a postgres bug (if it's a postgres issue
>> at all).
>>
>> As gregg mentioned in another followup ext4 under centos 5.x may be an
>> issue. I'll drop back to ext3 and see if I can replicate the
>> corruption or crashes one I rule out some potential hardware issues.
>
> Also do the standard memtest86+ run to ensure your memory isn't bad.
> Also do a simple dd if=/dev/sda of=/dev/null to make sure the drive
> has no errors.
If possible, also/instead use smartctl from smartmontools to ask the
drive to do an internal self-test and surface scan. This doesn't help
you with RAID volumes, but is often much more informative with plain
physical drives.
--
Craig Ringer