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Using a cluster-wide shared repository to provide the latest consistent definition of the cluster (avoiding the partition-in time problem)

  • US 7,020,695 B1
  • Filed: 05/28/1999
  • Issued: 03/28/2006
  • Est. Priority Date: 05/28/1999
  • Status: Expired due to Term
First Claim
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1. A method for maintaining a cluster definition for a network cluster of computing nodes having a plurality of member nodes and a network structure for facilitating network connectivity between nodes, the method comprising:

  • coupling at least two member nodes to a shared repository over a storage connection separate from the network structure;

    storing a cluster definition for the network cluster in the shared repository;

    selecting a coordinator node from the at least two member nodes of the network cluster;

    accessing, by a member node, the cluster definition on the shared repository using the storage connection, the member node having membership in the network cluster regardless of network connectivity with another node;

    at a member node, requesting a change to the cluster definition by sending a proposed change to the shared repository over the storage connection; and

    in response to the proposed change request, updating, from the coordinator node, the cluster definition stored in the shared repository to reflect the requested change.

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