基于Linux的RAID在线扩展功能的设计与实现  

Design and Implementation on RAID On-line Expansion Based on Linux

作　　者：齐路[1] 谢广军[1] 刘晓光[1] 王刚[1] 刘璟[1] 

机构地区：[1]南开大学计算机系,天津300071

出　　处：《计算机工程》2007年第16期269-271,共3页Computer Engineering

基　　金：国家自然科学基金资助项目(90612001);天津市科技发展计划资金资助重点项目(043800311;043185111-14);南开大学创新基金资助项目

摘　　要：基于Linux设计并实现了独立冗余磁盘阵列(RAID)的在线扩展功能,保证了对计算机存储系统进行扩展时用户请求的不间断访问,提高了系统的可用性。讨论了在利用普通方法对软件RAID进行结构扩展的基础上实现在线扩展功能,以及扩展过程中数据迁移和用户请求间的冲突问题的解决策略。试验表明,在线扩展操作在多次运行中稳定可靠,性能也较为理想。This paper designs and implements on-line expansion function in RAID system base on Linux, which allows RAID system to keep receiving requests from user while expanding. This function promotes the usability of the system. It also describes the implementation of on-line characteristic while using the simple method for RAID structure expansion and the solution to deal with the conflict between data migration and user＇s requests. Experiments show that on-line expansion is stable in a long time running and the performance is acceptable.

关 键 词：LINUX 软件RAID 在线扩展 

分 类 号：N945[自然科学总论—系统科学]