Whether SELinux protects us or not entirely depends on what Nova sets as the disk format in the XML after the resize. If Nova were to tell Libvirt that the disk is qcow2 after the resize, then SELinux will happily grant access to the backing file set in the qcow2 file.
Whether SELinux protects us or not entirely depends on what Nova sets as the disk format in the XML after the resize. If Nova were to tell Libvirt that the disk is qcow2 after the resize, then SELinux will happily grant access to the backing file set in the qcow2 file.