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	An efficient fine granularity multi-version file system
	Xiang Xiao-Jia ; Shu Ji-Wu ; Zheng Wei-Min
	2010-10-12 ; 2010-10-12
关键词	Practical/ file organisation/ fine granularity multiversion file system snapshot-based fine granularity versioning path-finding mechanism version space/ C6120 File organisation
中文摘要	A snapshot-based fine granularity versioning technique is presented to retain history data only for a single directory or a single file, and bring flexibility to multi-version file systems. Adopting the strategy to search in name space and version space separately, this paper also presents backward inheriting path-finding mechanism in version space. This mechanism is beneficial to the performance and management, because it can utilize the coupling relationship between versions to optimize the data layout of versions and build hierarchy in version space to accelerate the path-finding procedure. In addition, fast index structures for directory versions and file versions are designed. This prototype file system-THVFS can achieve both good performance and high availability with these technologies mentioned above. The experimental results show that the average time of searching old versions in THVFS was reduced by 34.4% than in ext3cow, the famous multi-version file system. In the trace experiment, the average read response time in THVFS was 12% less than in ext3, and only 80% extra space was needed to retain all history data when snapshots are taken every 72 minutes in THVFS.
语种	中文
出版者	Science Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82883]
专题	清华大学
推荐引用方式 GB/T 7714	Xiang Xiao-Jia,Shu Ji-Wu,Zheng Wei-Min. An efficient fine granularity multi-version file system[J],2010, 2010.
APA	Xiang Xiao-Jia,Shu Ji-Wu,&Zheng Wei-Min.(2010).An efficient fine granularity multi-version file system..
MLA	Xiang Xiao-Jia,et al."An efficient fine granularity multi-version file system".(2010).

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