具有事件恢复功能的文件系统的研究与实现

Design and Implement of Event-recovery File System

把一个进程在其执行过程中对文件的一系列修改称为一个事件。为了解决如何方便有效地恢复某个事件对文件的修改,研究并实现了一个具有事件恢复功能的文件系统GobackFS。GobackFS是一个用户空间文件系统,基于FUSE框架实现。测试结果表明,GobackFS文件系统在读写性能方面略低于Ext3文件系统,寻道速度方面略高于后者。

This paper defined event as the modifications a process makes to a series of files during its running. In order to address the issue of how conveniently and effectively recover the modifications a event makes to files, the authors designed and implemented an event-recovery file system named GobackFS. GobackFS is a user space file system, and implemented based on FUSE. Test results show that GobackFS file system is slightly lower than Ext3 file system in read and write performance,and slightly higher than the latter in seeking speed.