Guys, How can I configure the Compute Node, to create its qcow2 images, using preallocation? Currently, OpenStack Nova Compute creates the instance image, using "qemu-img create" without passing the option "-o preallocation=metadata" to it, which is slower. So, how can I reconfigure nova compute to make use of preallocation?! Libvirt supports it, commits: http://libvirt.org/git/?p=libvirt.git;a=commit;h=1c9a2fb1aef1729ac86cd6648b5c2b7584f5f698 http://libvirt.org/git/?p=libvirt.git;a=commit;h=790dfee5eaf8600282da5a3d61bf807516f1b87e Tks! Thiago -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20140711/9fbbdb3e/attachment.html>