# Find the root volumes and add to the disk_list
persistent_root_disk = Ns.find_persistent_root_volumes(
vnfd, target_vdu, vdu_instantiation_volumes_list, disk_list
# Find the root volumes and add to the disk_list
persistent_root_disk = Ns.find_persistent_root_volumes(
vnfd, target_vdu, vdu_instantiation_volumes_list, disk_list