Research on Implement Snapshot of pNFS Distributed File System

	Research on Implement Snapshot of pNFS Distributed File System
	Liu-Chao; Wang, Zhang-Jing; Liu Zhenjun; Wang-Chao; Wei, Zhang-Jun
	2011-03-01
发表期刊	APPLIED MATHEMATICS & INFORMATION SCIENCES
ISSN	1935-0090
卷号	5 期号:2 页码:179-185
摘要	Snapshot plays an increasingly important role in the online-backup and data-protection of distribute file systems. As a new generation standard of NFS, pNFS doesn't provide design scheme on snapshot concretely. And the current snapshot implementations depending on their own file system architecture heavily, can't be used in pNFS. This paper takes a careful study on pNFS structure, adopts a suitable metadata organized solutions, proposes an method to get a consistent state of file system based on COW and a novel source-reserved read/write process flow, which resolve the problem of interaction between client and server, consistence and efficient of creating snapshots. To our knowledge, we firstly implement snapshot function of pNFS in Linux kernel 2.6 and the tests which shows creating snapshot has little affect on performance of pNFS. Snapshot is quick to create(less than 1 second) and can be created frequently (one snapshot per second) without serious performance degradation(less than 10% degradation to write bandwidth).
关键词	snapshot pNFS Distributed file system (DFS) copy on write(COW)
收录类别	SCI
语种	英语
WOS研究方向	Mathematics ; Physics
WOS类目	Mathematics, Applied ; Physics, Mathematical
WOS记录号	WOS:000295658200024
出版者	NATURAL SCIENCES PUBLISHING CORPORATION
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/12779
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Liu-Chao
作者单位	Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Liu-Chao,Wang, Zhang-Jing,Liu Zhenjun,et al. Research on Implement Snapshot of pNFS Distributed File System[J]. APPLIED MATHEMATICS & INFORMATION SCIENCES,2011,5(2):179-185.
APA	Liu-Chao,Wang, Zhang-Jing,Liu Zhenjun,Wang-Chao,&Wei, Zhang-Jun.(2011).Research on Implement Snapshot of pNFS Distributed File System.APPLIED MATHEMATICS & INFORMATION SCIENCES,5(2),179-185.
MLA	Liu-Chao,et al."Research on Implement Snapshot of pNFS Distributed File System".APPLIED MATHEMATICS & INFORMATION SCIENCES 5.2(2011):179-185.