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Extent-Based Allocation Scheme for Hybrid Storage Solutions

Authors:
Jaechun No
Sung-soon Park

Keywords: extent partitioning; matrix-based allocation; file mapping; fragmentation overhead

Abstract:
We present an extent-based allocation scheme for hybrid storage solutions, called MatBall (Matrix and extentbased allocation), whose objective is to increase space utilization of SSD partition in the hybrid file system by reducing fragmentation overhead. In MatBall, to consume the remaining spaces as much as possible posterior to file allocations, I/O units (extents) of the hybrid file system are recursively partitioned into segments in the subsequent level and further file allocations are performed in units of the partitioned segments. Since MatBall defines easy-to-compute segment sizes and block positions in I/O units, allocating more files in the remaining spaces can be performed with a little overhead. The performance measurement with IOzone shows that the hybrid file system using MatBall enables to produce higher bandwidth over ext2 installed on HDD and SSD.

Pages: 19 to 24

Copyright: Copyright (c) IARIA, 2016

Publication date: August 21, 2016

Published in: conference

ISSN: 2326-9286

ISBN: 978-1-61208-503-6

Location: Rome, Italy

Dates: from August 21, 2016 to August 25, 2016