Silver: A Scalable, Distributed, Multi-versioning, Always Growing (Ag) File System

The storage needs of users have shifted from just needing to store data to requiring a rich interface which enables the efficient query of versions, snapshots and creation of clones. Providing these features in a distributed file system while maintaining scalability, strong consistency and performance remains a challenge. In this paper we introduce Silver, a file system which leverages the Corfu distributed logging system to not only store data, but to provide fast strongly consistent snapshots, clones and multi-versioning while preserving the scalability and performance of the distributed shared log. We describe and implement Silver using a FUSE prototype and show its performance characteristics.