[ovirt-users] change cache behavior per VM?

Hi, With KVM (and using tools like virt-manager) you can set the cache behavior like write-back, write-through etc. etc.. Can this be done by oVirt? looks like oVirt "kills" ZFS servers as it insists to wait until every bit has been written to disk, and I don't need it (my oVirt is not for production, and there are snapshots in ZFS for that). Thanks