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Erschienen in:
2016 | OriginalPaper | Buchkapitel
A Portable and Platform Independent File System for Large Scale Peer-to-Peer Systems and Distributed Applications
verfasst von : Andreas Barbian, Stefan Nothaas, Timm J. Filler, Michael Schoettner
Erschienen in: Advances in Parallel and Distributed Computing and Ubiquitous Services
Verlag: Springer Singapore
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Abstract
Virtual microscopy is an evolving medical application used for teaching and learning at universities. We have developed a peer-to-peer based solution called Omentum, aiming at bringing virtual microscopy to an Internet-scale community. Omentum has to manage more than 10,000 large proprietary microscopic images that are converted to easily dividable JPEG-trees, each consisting of millions of very small-scaled image parts. In this paper we propose a portable and platform independent user space file system (USPFS) for addressing the application-specific access patterns, security concerns and data integrity. USPFS is able to efficiently manage huge capacities (roughly 9 × 1018 slices with 9,000 Petabytes each) with a theoretically infinite number of storable objects while providing highly important platform independency, data integrity checks as well as an easily extendable API. The evident metadata overhead is only 0.3 % and the performance evaluation shows promising results for both read and write operations.