DHPC Talk DHPCT-019
DWorFS: File System Support for Legacy Applications in DISCWorld
Craig Patten
Archived: 25 February 1999
Presented at
the 5th IDEA Workshop, Fremantle, February 1998.
See also the accompanying
technical paper.
Abstract
Applications can be embedded in a distributed computing environment
such as DISCWorld in two ways. One approach is to (re)write
applications to conform with data access interfaces such as libraries
which can communicate with distributed and/or hierarchical storage.
Alternatively, unmodified applications can be provided with normal
file system services, often the only approach with legacy or commercial
applications where source code is not freely available. We describe
some ideas for supporting such applications, through a system we are
designing and implementing called the DISCWorld File System
(DWorFS), which uses the ubiquitous Network File System (NFS)
protocol. User requests are formulated in two stages: negotiation for
virtual directories and files of input data, or locations for output data;
and an invocation of the application, to which the virtual input and
output file(s) are specified.
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