Sheepdog is an open-source distributed storage system that provides a virtual storage pool utilizing internal disk of commodity servers. Sheepdog scales to several hundred nodes, and has powerful virtual disk management features like snapshot, cloning, rollback, thin provisioning. More information can be found on Sheepdog Project. This driver enables use of Sheepdog through Qemu/KVM. Set the following volume_driver in cinder.conf: volume_driver=cinder.volume.drivers.sheepdog.SheepdogDriver