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Method for data maintenance

  • US 9,305,012 B2
  • Filed: 12/05/2013
  • Issued: 04/05/2016
  • Est. Priority Date: 09/02/2011
  • Status: Active Grant
First Claim
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1. A method for implementing a distributed directory structure in a data storage system, the method comprising:

  • identifying a first data item in a data storage system, wherein the first data item comprises a first collection object, the first collection object comprises one or more references to one or more other data items in the data storage system, the one or more references comprise a reference to a second data item stored in the data storage system, and the first collection object corresponds to a first subdirectory in a distributed directory system;

    determining a first multicast address to use for requesting the first collection object;

    sending a first request for the first collection object using the first multicast address, the first request including a unique identifier for the first collection object;

    receiving at least one copy of the first collection object based on sending the first request using the first multicast address;

    determining a second multicast address used to request the second data item in a cluster of the data storage system, wherein the reference to the second data item included in the first collection object comprises the second multicast address, the second data item comprises a second collection object, the second collection object corresponds to a second subdirectory, and the first subdirectory is a parent directory of the second subdirectory;

    sending a second request for the second data item to the second multicast address included in the reference to the second data item included in the first collection object; and

    receiving the second data item via a unicast message based on the second request.

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