On Thu, April 9, 2009 9:49 am, Goswin von Brederlow wrote:

Steven Ellis [off-list ref] writes:

quoted

I've resolved most of my raid issues by re-housing the affected system
and replacing the motherboard, but across the 3 boards I've tried I
always have an issue with my /dev/md1 array producing mismatch_count
of 128 or 256.

System is running Centos 5.2 with a Xen Dom0 kernel

This md1 volume is a pair of 40GB HDs raid1 on an IDE controller which
I them have a bunch of LVM's that are my Xen guests.

Is there any chance that these mismatch_count values are due to swap
partitions for the Xen guests?

Steve

Have you repaired the raid or do you just check and check and check?

Yes I've repaired the raid several times. Then when I put the Xen guests
under load and re-run check the errors re-appear.

--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email   - steven@openmedia.co.nz
website - http://www.openmedia.co.nz