Libvirt-domain.c in libvirt before 1.3.1 supports virDomainGetTime API calls with an RO connection instead of RW connection. Upstream Commit: https://github.com/libvirt/libvirt/commit/506e9d6c2d4baaf580d489fff0690c0ff2ff588f
libvirt-0.x did not support this API.
libvirt is not shipped in Gluster it only ships sanlock driver, hence not affected.