新增ceph源，欢迎使用。

Ceph is a free software storage platform that stores data on a single distributed computer cluster, and provides interfaces for object-, block- and file-level storage. Ceph aims primarily to be completely distributed without a single point of failure, scalable to the exabyte level, and freely available.

Ceph replicates data and makes it fault-tolerant,using commodity hardware and requiring no specific hardware support. As a result of its design, the system is both self-healing and self-managing, aiming to minimize administration time and other costs.

（摘自维基百科）