NDLI: RFS:a network file system for mobile devices and the cloud

Content Provider	ACM Digital Library
Author	Dong, Yuan Wang, Dawei Zhu, Haiyang Peng, Jinzhan Mesnier, Michael P. Chan, Sun C. Wang, Fang
Abstract	Due to the increasing number of applications (and their data) being placed on mobile devices, access to dependable storage is becoming a key issue in mobile system design -- and cloud storage is becoming an attractive solution. However, this introduces a number of new issues related to unpredictable wireless network connectivity and data privacy over the network. In this article we present RFS, a wireless-friendly network file system for mobile devices and the cloud. RFS provides deviceaware cache management and client-driven data security and privacy protection. We implement the RFS client in the Linux kernel and the RFS server with Amazon S3 cloud storage, and we employ two new optimizations: server prepush (a server-side data pre-fetching mechanism) and client reintegration (synchronizing a mobile device's cache with the cloud). The empirical results over wired, WiFi and 3G networks show that RFS achieves good performance compared to Coda and FScache, and it reduces network activity visibly. Further, the privacy overhead is acceptable when RFS is run over wireless networks. We present a case study of booting Android over RFS, thereby demonstrating the ability for RFS to host a full mobile system. Overall, RFS can deliver a good user experience under undependable network conditions, allowing mobile users to seamlessly, and safely, use the cloud for data storage.
Starting Page	101
Ending Page	111
Page Count	11
File Format	PDF
ISSN	01635980
DOI	10.1145/1945023.1945036
Journal	ACM SIGOPS Operating Systems Review (OPSR)
Volume Number	45
Issue Number	1
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1975-04-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Wireless Caching Network file system Cloud storage Mobile
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Information Systems

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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