Am 25.04.2010 23:05, Jon M. Skelton wrote:
I'm currently doing this. Ubuntu 10.04 (beta) using glusterfs to mirror
qcow2 KVM machine images. Works quite well. In both your crashing cases,
things look much like when VM gets 'virsh destroy'. It's a little rough
on the filesystem contained within the machine image. I've had some luck
cleaning them up accessing the machine image filesystems via qemu-nbd:
Did you compare how much performance drops, versus bare metal?
I.e. run it in virtual guest, virtual host and the glusterfs server
itself (if virtual host is a different server than at least one of
glusterfs servers)?
time dd if=/dev/zero of=/bigfile bs=1M count=5000
time dd if=/bigfile of=/dev/null bs=64k
And drop caches between each run with:
echo 3 > /proc/sys/vm/drop_caches
--
Tomasz Chmielewski
http://wpkg.org
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