Design and Implementation of Multi-version Snapshot Based on Block Device
Hai Jie · Jisuanji gongcheng · 2009
With the wide application of snapshot technology, there are many different approaches of realization. Compared to the snapshot on file systems, this snapshot can not only work on different file systems, but also has a good performance. And by using a simple hash algorithm, the metadata searching accelerates. Test results show that this snapshot performs steadily and efficiently, and in most cases, the method of Redirect-on-Write(RoW) is better than Copy-on-Write(CoW).