Parallel virtual file system

Details Parallel virtual file system Parallel virtual file system

1997-06-16

1999-04-27

Amsbury, Wayne

Data processing: database and file management or data structures

Database design

Data structure types

707 8, 707 10, 707202, 707203, G06F 1730

Patent

active

058976388

ABSTRACT:
A parallel virtual file system for parallel processing systems including single-processor systems having multiple storage devices. The invention manages partitioned files as follows: (1) partitions of a partitioned file are stored in a set of isomorphic "data trees"; (2) an additional directory tree, called the "control tree", is used to build a model of the intended structure of the data trees; (3) the combination of a control tree and a collection of data trees is referred to as a "multifile system", with sets of files referred to as "multifile" and sets of directories referred to as "multi-directories;" data elements of a multifile or multidirectory are referred to as "data plies" and control elements of a multifile or multidirectory are referred to as "control plies"; (4) a set of multifile subroutines is provided for accessing and modifying the multifile system in such a way so as to preserve the isomorphic data structures for the partitioned data; (5) the multifile subroutines use a distributed computing environment which provides for remote procedure calls and, in one of the embodiments of the invention, for a distributed transaction processing protocol to ensure atomicity of structural changes to the multifile system; (6) interference of concurrent file system operations is prevented by creating a "transactional" lock for each file system.

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Michael Harry et al., VIP-FS: A Virtual, Parallel File System for High Performance Parallel and Distributed Computing, IEEE 1995, and 159-164, Apr. 1995.
W.B. Ligon III et al., Implementation and Performance of a Parallel File System for High Performance Distributed Applications, IEEE 1996, and 471-480, Aug. 1996.
Horst F. Wedde et al., Distributed Management of Replicated and Partitioned files under dragon slayer, IEEE 1990, and 436-441, Nov. 1990.
Rajmohan Panadiwal et al., A High Performance and Reliable Distributed File Facility, IEEE 1994, and 116-123, Jun. 1994.

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