文件系统可靠管理方法研究  

Research on Reliable Management Methods of File Systems

作　　者：杨琼[1] 任晓瑞[1] 王冬 YANG Qiong;REN Xiao-rui;WANG Dong(Xi′an Aeronautics Computing Technique Research Institute,AVIC,Xi′an 710000,China)

机构地区：[1]航空工业西安航空计算技术研究所,陕西西安710000

出　　处：《航空计算技术》2024年第1期95-98,共4页Aeronautical Computing Technique

基　　金：国家重点研发计划项目资助(2017YFB1301100)。

摘　　要：针对系统突发掉电情况下文件系统的可靠性问题,研究一种文件系统可靠管理方法,采用元数据事务管理技术,在数据更新时采用写时拷贝技术实现异地更新,采用PING PONG日志管理技术,对文件系统的空间和节点分配情况采用两级日志进行维护,系统维护两份事务点日志记录;通过逻辑卷管理关键数据的冗余存储,防止掉电时超级块数据被破坏引起系统无法正常启动。测试表明方法能够解决突发掉电情况下文件系统状态的一致性问题,实现文件系统的可靠管理。Aimed at solving the reliability problem of file systems in the event of sudden power outages,a reliable management method for file systems is researched.It adopts metadata transaction management technology,using write time copy technology to achieve remote updates during data updates.It uses PING PONG log management technology,maintaining two level logs for file system space and node allocation,and maintaining two transaction point log records.Redundant storage of critical data is managed through logical volumes to prevent the system from being unable to start normally due to the destruction of super block data during power outages.Testing has been shown that this method can solve the consistency problem of file system status in case of sudden power outage,and achieve reliable management of file systems.

关 键 词：PINGPONG日志 事务 文件系统 可靠性 一致性 

分 类 号：TP334.7[自动化与计算机技术—计算机系统结构] TP333[自动化与计算机技术—计算机科学与技术] TP316