Support for ext4 as default filesystem for ephemeral disks for OpenStack Compute (nova)

The ext3 filesystem does orders of magnitude more I/O than ext4 in mkfs - a brief benchmark showed 14m to make a 1TB ext3 filesystem vs 7 seconds to make a 1TB ext4 filesystem, with the ext3 filesystem doing upwards of 6GB I/O. Since ext4 has been a default in all major Linux distributions for a long time now - RHEL...

Support for Newer libvirt 1.x for OpenStack Compute (nova)

Based on initial comments and feeback here - https://bugs.launchpad.net/nova/+bug/1228977/comments/13 We need to move to and support newer libvirt versions for Nova. There have been changes in the recent past and the current trunk at least supports running unit tests with libvirt 1.1.1. Based on initial investig...