软件导刊2016，Vol.15Issue(7)：33-35,3.DOI:10.11907/rjdk.161381
分布式块存储系统中高效纠删码重构技术研究
Study on Efficient Reconstruction of Erasure Code in Distributed Block Storage Systems
陈付 1张淑萍1
作者信息
- 1. 中国航天科工集团第二研究院七〇六所，北京100854
- 折叠
摘要
Abstract
Nowadays ,the storage efficiency of three-replica mechanism is hard to accept under the pressure of massive stor-age .Meanwhile ,erasure code can have the same reliability ,and use less storage and bandwidth .Hence ,based on study of erasure code in distributed block storage ,a fault-tolerance approach specific to block storage access characteristics is proposed .This method includes two sides :a hybrid method of erasure code and hot spare replication ,it can solve the de-graded read/w rite problem due to transient failures ;a fine-grained control over the time-point of lazy reconstruction of per-manent failures to decrease the bandwidth pressure .The simulation experiment shows that contrast with traditional era-sure code methods ,this approach save 4x bandwidth and its storage cost is only half of three-replica methods .关键词
云存储/分布式块存储/纠删码/重构效率Key words
Distributed Block Storage/Erasure Code/Reconstruction Efficiency分类
信息技术与安全科学引用本文复制引用
陈付,张淑萍..分布式块存储系统中高效纠删码重构技术研究[J].软件导刊,2016,15(7):33-35,3.
