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System and method for efficient cache management in a distributed file system

  • US 6,119,151 A
  • Filed: 03/07/1994
  • Issued: 09/12/2000
  • Est. Priority Date: 03/07/1994
  • Status: Expired due to Term
First Claim
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1. A method of managing a file system cache in a client computer system operating under a first operating system, the method comprising the steps of:

  • intercepting operating system requests for a file system object in a distributed file system;

    transforming said requests to remove operating system dependent syntax;

    testing a cache in a storage means of said client for the presence of file system object data based on said transformed request;

    satisfying said transformed request for said file system object data, if cache data exists;

    testing to determine whether a connection exists to said distributed file system;

    generating a request for said file system object from said distributed file system, without regard to distributed file system protocol, if no cache data exists and there is a connection;

    transmitting said request to said distributed file system; and

    rejecting said file system object request, if no cache data exists and there is no connection.

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