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Namespace consistency for a wide-area file system

  • US 8,311,980 B2
  • Filed: 12/01/2003
  • Issued: 11/13/2012
  • Est. Priority Date: 12/09/2002
  • Status: Active Grant
First Claim
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1. A method for a wide-area file system, including a plurality of nodes storing replicas of objects, the objects being files and file directories, wherein for each replica of an object at a node, a parent directory for the object is replicated at the node, the method comprising:

  • propagating an update to a replica of a file directory to other replicas of the file directory via a graph, wherein each replica of the file directory has edges to only a subset of the other replicas such that all the replicas of the file directory are connected via the graph; and

    in response to receiving a propagated update to a replica of the file directory at a node, updating the replica for the file directory at the node.

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