File System Snapshot
Jinsun Suk, Jaechun No · Journal of the Institute of Electronics Engineers of Korea · 2010
As the development of IT technologies, storages stored very sensitive data which should not be damaged, too. It increased the importance of data backup and makes the time need to backup data important issues. Snapshot is one of the backup technologies which needs short downtime to maintain consistency of data during backup data. In this paper, we studied two kinds of snapshots, local file system based snapshot and network file system based snapshot. In the local file system based snapshot part, we propose the PSnap which is a snapshot library for non-snapshot file system as like Ext2, Ext3 and XFS. In another part, network file system based snapshot, we propose the GlorySnap which snapshot utilities for GloryFS is a distributed file system was made by ETRI.