摘要： 提出一种支持多还原点的磁盘隔离系统软件设计思想。通过设计磁盘过滤驱动过滤用户对磁盘的读写操作，利用工作映射表确保对相同逻辑地址的读写请求映射到不同的物理地址，从而实现隔离功能。通过设计还原点映射表，用还原点保存的工作映射表替换当前工作映射表以实现还原功能。实验结果表明，该系统可以实现隔离和还原功能，并且运行稳定。

关键词: Windows文件系统, 磁盘过滤驱动, 磁盘分配表, 工作映射表, 还原点映射表

Abstract: This paper proposes a software design idea of the disk isolation system that supports multi-reverting points. Disk filter drive is designed to filter users’ operations for reading and writing. Work mapping table is designed to ensure that the request for reading and writing to the same logical block address can be mapped to different physical block addresses, so that the function of isolation is implemented. Reverting point mapping table is designed to replace the current work mapping table with the work mapping table saved by reverting points, by means of which the role of reverting is achieved. Experimental result indicates that the system can implement the functions of isolation and reverting, and it runs steady.

Key words: Windows file system, disk filter drive, disk allocation table, work mapping table, reverting point mapping table

中图分类号: 

• TP 309.2