Sanitization of Open-Source Based Deduplicated Filesystem

Vol. 26, No. 5, pp. 1141-1150, Oct. 2016
10.13089/JKIISC.2016.26.5.1141, Full Text:
Keywords: Deduplication, sanitization, FUSE, LessFS, Filesystem
Abstract

Deduplicated filesystem can reduce usage of storage. However, it be able to recover deleted block. We studied sanitization of deduplicated filesystem, LessFS which is based on FUSE(Filesystem in USErspace). First, we show a vulnerability recover deleted data in the deduplicated filesystem. We implement sanitization of deduplicated filesystem considering the part of fingerprint DB with data blocks. It takes 60~70 times compared to without sanitization. Which means access time to fingerprint DB and overhead derived from increase of number of chunk have a critical impact on sanitization time. But in case of more than 65,536 Byte of chunksize, it is faster than normal filesystem without deduplication.

Statistics
Show / Hide Statistics

Statistics (Cumulative Counts from December 1st, 2017)
Multiple requests among the same browser session are counted as one view.
If you mouse over a chart, the values of data points will be shown.


Cite this article
[IEEE Style]
H. Cho, S. Kim, T. Kwon, "Sanitization of Open-Source Based Deduplicated Filesystem," Journal of The Korea Institute of Information Security and Cryptology, vol. 26, no. 5, pp. 1141-1150, 2016. DOI: 10.13089/JKIISC.2016.26.5.1141.

[ACM Style]
Hyeonwoong Cho, SeulGi Kim, and Taekyoung Kwon. 2016. Sanitization of Open-Source Based Deduplicated Filesystem. Journal of The Korea Institute of Information Security and Cryptology, 26, 5, (2016), 1141-1150. DOI: 10.13089/JKIISC.2016.26.5.1141.