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Locking access to data storage shared by a plurality of compute nodes

  • US 8,949,566 B2
  • Filed: 12/02/2010
  • Issued: 02/03/2015
  • Est. Priority Date: 12/02/2010
  • Status: Active Grant
First Claim
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1. A method for locking access to data storage shared by a plurality of compute nodes, the method comprising:

  • maintaining, by a compute node, a queue of requests from requesting compute nodes of the plurality of compute nodes for access to the data storage, wherein possession of the queue represents possession of a mutual-exclusion lock on the data storage, the mutual-exclusion lock indicating exclusive permission for access to the data storage; and

    conveying, based on the order of requests in the queue, possession of the queue from the compute node to a next requesting compute node when the compute node no longer requires exclusive access to the data storage.

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