NDLI: ESnapII: A Writable Dependent Snapshot System with Shared Cache

Content Provider	IEEE Xplore Digital Library
Author	Guangjun Xie Lu Qi Feng Wang Gang Wang XiaoGuang Liu Jing Liu
Copyright Year	2008
Description	Author affiliation: Coll. of Inf. Sci. & Technol., Nankai Univ., Tianjin (Guangjun Xie)
Abstract	Snapshot technology, which has been widely used in data storage system for data protections and other tasks such as data mining and data cloning, is becoming one of the key technologies in storage area. ESnap improved the performance, resource consumption and reliability compared with traditional LVM snapshot implementation. But it still has some problems: (i) high memory consumptions caused by snapshot metadata, (ii) not support writable snapshot. A novel optimization of Esnap called ESnapII, which alleviates all the above four difficulties is proposed in this paper. In detail, a global metadata cache shared by all snapshots belongs to the same VG is proposed to reduce the memory consumption; Future more, a writing mechanism is presented for both dependent and independent snapshot. Experiment results show that ESnapII has higher performance and lower resource utilization rate than previous work.
Starting Page	677
Ending Page	682
File Size	500555
Page Count	6
File Format	PDF
ISBN	9780769532639
DOI	10.1109/SNPD.2008.94
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-08-06
Publisher Place	Thailand
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis LVM Linux Layout Memory management metadata management Writing Indexes dependent snapshot Round robin
Content Type	Text
Resource Type	Article

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