×

FILE SHARING SYSTEM AND FILE SHARING METHOD

  • US 20120265836A1
  • Filed: 04/15/2011
  • Published: 10/18/2012
  • Est. Priority Date: 04/15/2011
  • Status: Active Grant
First Claim
Patent Images

1. A file sharing system comprising:

  • a master server configured to provide one or more master file systems each including a directory and a file each being an object; and

    one or more slave servers each configured to acquire a copy file system of a part or whole of a master file system provided by the master server, wherein;

    a first slave server in the one or more slave servers includes copy management information associating a master file system identifier with an identifier of a slave server including a copy file system of a part or whole of a master file system identified by the master file system identifier;

    the first slave server acquires a first copy file system of a part of a first master file system in the one or more master file systems, the first copy file system including a stub-state object;

    the first slave server, using an identifier of the first master file system, searches the copy management information for a slave server to be queried regarding cached information for materializing the stub-state object;

    on condition that the search result indicates a slave server to be queried in the one or more slave servers, the first slave server queries the slave server to be queried regarding the cached information for materialization; and

    on condition that the slave server to be queried includes the information for materialization, the first slave server materializes the stub-state object using the information for materialization acquired from the slave server to be queried.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×