Deduplication TAR Scheme Using User-Level File System

Young-Woong KO  Min-Ja KIM  Jeong-Gun LEE  Chuck YOO  

IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.8   pp.2174-2177
Publication Date: 2014/08/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E97.D.2174
Type of Manuscript: LETTER
Category: Data Engineering, Web Information Systems
user-level file system,  TAR,  file allocation table,  block management,  

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In this paper, we propose a new user-level file system to support block relocation by modifying the file allocation table without actual data copying. The key idea of the proposed system is to provide the block insertion and deletion function for file manipulation. This approach can be used very effectively for block-aligned file modification applications such as a compress utility and a TAR archival system. To show the usefulness of the proposed file system, we adapted the new functionality to TAR application by modifying TAR file to support an efficient sub-file management scheme. Experiment results show that the proposed system can significantly reduce the file I/O overhead and improve the I/O performance of a file system.