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VisageFS Translucent Directories: Efficient Posix Consistencies for Wide-Area Workflows

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3 Author(s)
Thiebolt, F. ; Inst. de Rech. en Inf. de Toulouse, Univ. Paul Sabatier Toulouse III, Toulouse ; Ortiz, A. ; M'zoughi, A.

One of the key challenges related to the grid environment is to efficiently use the storage resources of compute nodes. Therefore, we have developed the ViSaGe solution which features VisageFS - a POSIX-compliant wide-area file system, VCCC - a distributed lock mechanism, and VRT - a storage virtualization layer. In this paper, we present the VisageFS translucent directory property which enables a dynamic, transparent and efficient use of local storage by means of hierarchical Posix consistencies. Nodes that access a translucent enabled shared-directory will see different contents according to the site or node-level POSIX consistency. Thereafter, one of the various reconciliation modes re-enables the grid-level POSIX consistency. Our "nevermind'' mode does it in constant time.

Published in:

Parallel, Distributed and Network-based Processing, 2009 17th Euromicro International Conference on

Date of Conference:

18-20 Feb. 2009