Final point. I tried remounting the volume using an undocumented setting I saw in another posting: mount -o direct-io-mode=enable -t glusterfs dev-storage1:/single1 /gluster/single1 But with that, and KVM also using cache=none, the VM simply hung on startup. This looks like a bug to me. With this same mount I was able to restart the VM without cache=none, but then performance was terrible: ubuntu at lucidtest:~$ dd if=/dev/zero of=/var/tmp/test.zeros6 bs=1024k count=500 500+0 records in 500+0 records out 524288000 bytes (524 MB) copied, 122.493 s, 4.3 MB/s Regards, Brian.
