On 01/11/2013 02:51 PM, Luca Gervasi wrote: > Hello, > > i'm trying to create some best practices on my centos 6.3 / libvirt /kvm > hypervisors. > > Actually, i use NFS as shared storage backend for every VM and make > reasonable use of the KSM (enabling it into qemu.conf). > > Every VM is configured with VirtIO drivers (when possible) and the disks > use none as cacheing method to allow me live migration. > > I'll be happy to know if there are some more improvements i can implement. > > Please share your knowledge. Pay attention to /etc/sysconfig/libvirt-guests and make sure that you either set ON_SHUTDOWN=shutdown or have enough diskspace available on the host filesystem to suspend all guests. Regards, Dennis