%0 Conference Proceedings
%T Live Deduplication Storage of Virtual Machine Images in an Open-Source Cloud
%+ The Chinese University of Hong Kong [Hong Kong] (CUHK)
%A Ng, Chun-Ho
%A Ma, Mingcao
%A Wong, Tsz-Yeung
%A Lee, Patrick
%A Lui, John
%Z Part 3: Storage and Performance Management
%< avec comité de lecture
%( Lecture Notes in Computer Science
%B 12th International Middleware Conference (MIDDLEWARE)
%C Lisbon, Portugal
%Y Fabio Kon
%Y Anne-Marie Kermarrec
%I Springer
%3 Middleware 2011
%V LNCS-7049
%P 81-100
%8 2011-12-12
%D 2011
%R 10.1007/978-3-642-25821-3_5
%K Deduplication
%K virtual machine image storage
%K open-source cloud
%K file system
%K implementation
%K experimentation
%Z Computer Science [cs]
%Z Computer Science [cs]/Networking and Internet Architecture [cs.NI]Conference papers
%X Deduplication is an approach of avoiding storing data blocks with identical content, and has been shown to effectively reduce the disk space for storing multi-gigabyte virtual machine (VM) images. However, it remains challenging to deploy deduplication in a real system, such as a cloud platform, where VM images are regularly inserted and retrieved. We propose LiveDFS, a live deduplication file system that enables deduplication storage of VM images in an open-source cloud that is deployed under low-cost commodity hardware settings with limited memory footprints. LiveDFS has several distinct features, including spatial locality, prefetching of metadata, and journaling. LiveDFS is POSIX-compliant and is implemented as a Linux kernel-space file system. We deploy our LiveDFS prototype as a storage layer in a cloud platform based on OpenStack, and conduct extensive experiments. Compared to an ordinary file system without deduplication, we show that LiveDFS can save at least 40% of space for storing VM images, while achieving reasonable performance in importing and retrieving VM images. Our work justifies the feasibility of deploying LiveDFS in an open-source cloud.
%G English
%Z TC 6
%Z WG 6.1
%2 https://inria.hal.science/hal-01597754/document
%2 https://inria.hal.science/hal-01597754/file/978-3-642-25821-3_5_Chapter.pdf
%L hal-01597754
%U https://inria.hal.science/hal-01597754
%~ IFIP-LNCS
%~ IFIP
%~ IFIP-TC
%~ IFIP-WG
%~ IFIP-TC6
%~ IFIP-WG6-1
%~ IFIP-MIDDLEWARE
%~ IFIP-LNCS-7049