On Fri, Sep 21, 2012 at 09:22:24PM +1000, Amos Shapira wrote: > 2. Maintenance - if I get to share the common disk image among all of them > then I only need to install/update it once instead of once for each KVM > guest (we already use Puppet but it doesn't mean it comes for free). How do you plan on upgrading the read-only VMs after the initial installation, or are they short-lived and frequently recreated from scratch using a fresh image? Read-only, shared /usr between machines is a nice idea in theory, but at least the modern linux distros' package management tend not to support it that well in practice. IMHO using a QCOW2 backing files as base templates works pretty well and gives you similar disk space savings, at least initially. And KSM does the same with RAM. _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
