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Providing multiple concurrent access to a file system

  • US 9,031,984 B2
  • Filed: 07/15/2013
  • Issued: 05/12/2015
  • Est. Priority Date: 02/06/2004
  • Status: Active Grant
First Claim
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1. A data storage system networked to each of a plurality of computers, the data storage system comprising:

  • a non-transitory data storage unit that stores data in files that are accessible by the computers, each file having a file lock and each file lock having data fields including an owner field and a time field,wherein the owner field of each file lock stores a value that indicates which one of the computers or none of the computers owns the file lock, the time field of each file lock stores a value that indicates whether or not a time period for owning the file lock has expired, and the owner field and the time field of each file lock are accessible by any one of the plurality of computers for writing values therein, without using any other computer, to indicate that the computer that has written the values owns the file lock.

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