[ceph-users] Restrict user to an RBD image in a pool

Hello guys! Is it possible to restrict user access to a single image in an RBD pool? I know that I can use namespaces, so users can only see images with a given namespaces. However, these users will still be able to create new RBD images. Is it possible to somehow block users from creating RBD images and only work with the already existing ones?