Projects in the topic ceph
Ceph is an open-source software storage platform

Create a USB device that, when configured and connected, exposes one or more Ceph RBD images for use as USB storage, allowing for: * Ceph storage consumption by almost any system with a USB port

libvirt+Xen should support the qdisk (qemu) rbd backend, providing native access to block devices hosted on Ceph clusters. Adding this support to the libvirt+Xen toolstack will also improve interoperability with SUSE Enterprise Storage.