基于备份的RAID6在线重构框架  

RAID6 ONLINE RECONSTRUCTION FRAMEWORK BASED ON BACKUP

作　　者：徐伟[1] Xu Wei(Communication Information Center,State Administration of Work Safety, Beijing 100713, China)

机构地区：[1]国家安全生产监督管理总局通信信息中心,北京100713

出　　处：《计算机应用与软件》2018年第5期48-54,101,共8页Computer Applications and Software

基　　金：国家自然科学基金项目(61100057)

摘　　要：针对国内外现有研究一直解决不了重负载持续访问下RAID6重构性能急剧恶化的问题,提出"利用外部存放的备份数据来加速磁盘阵列RAID6在线重构"的思想。构建基于备份的RAID6在线重构框架,实现该框架的原型系统,并进行相应测试。此框架利用备份系统所提供的恢复带宽将处于最近一次备份时间点的版本数据整合热备盘;利用磁盘阵列RAID6所提供的重构带宽将自最近一次备份时间点之后已修改数据重构至热备盘;完成磁盘阵列RAID6重构过程,使得磁盘阵列RAID6恢复正常运行。测试结果说明了该框架相对于现有重构方法显著改善了磁盘阵列RAID6的重构性能和服务性能。Regarding present problems that the rapid deterioration of reconstruction performance under the continuous heavy workload has never been solved by both the domestics and foreign researches,this thesis proposed for the idea of＂accelerating the online reconstruction of RAID6 by the backup data in external storage ＂. We built the online reconstruction framework of RAID6 based on backup,and completed the prototype system of this framework,and did the corresponding test. The framework utilized the restore bandwidth provided by the backup system to integrate the version data at the latest backup time point into the hot spare disk,and utilized the reconstruction bandwidth provided by RAID6 to reconstruct the modified data after the latest backup time point to the hot spare disk. It completed the reconstruction process of the disk array RAID6,and restored the disk array RAID6 to normal operation. The test result shows that compared with the existing reconstruction method,the framework greatly improves the reconstruction performance and service performance of RAID6.

关 键 词：RAID6 在线重构 备份数据 版本恢复 版本修复 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]