XFS日志文件系统的关键技术研究

Study on Key Technology in XFS Journal File System

对日志文件系统和传统文件系统进行了比较 ,介绍了 XFS在日志文件系统上的改进。针对一种具体的日志文件系统—— XFS进行了详细的介绍 ,包括 XFS的体系结构 ,以及它进行的优化 ,主要表现在管理大文件、大目录、超多目录文件的各种机制和高效的 I/O处理。最后介绍了 XFS在项目里的应用。

This paper compares journal file systems with traditional file systems and presents the improvement of XFS in journal file system.A journal file system —XFS is introduced in detail,including XFS system architecture and performance optimization,focusing on mechanisms for managing large files,large number files,large directories,and very high effective performance I/O.The application of XFS in the project is introduced in the end of paper.