Re: [Libguestfs] [PATCH 2/4] v2v: chmod original OVA file if running as root (RHBZ#1430680).

In the case where we are going to read the disk directly from the OVA file (partial = true), we will create a qcow2 image backed by the OVA. If running as root, libvirt will run qemu as a non-root user (because of no qemu:///session support for root, which is a libvirt bug). qemu will not be able to read the backing file and thus will fail. To work around this problem, chmod the backing (OVA) file. This isn't a complete fix since (eg) the OVA might be located in a directory which isn't accessible by root, but there's only so much we can do here until libvirt is fixed. Thanks: Kun Wei. ---