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Controlled take over of services by remaining nodes of clustered computing system

  • US 6,789,213 B2
  • Filed: 01/10/2000
  • Issued: 09/07/2004
  • Est. Priority Date: 01/10/2000
  • Status: Expired due to Term
First Claim
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1. A method for taking over services by one or more remaining sub-clusters of a clustered computing system from one or more other sub-clusters of the clustered computing system after the one or more other sub-clusters have been shutdown, said method comprising:

  • (a) attempting to determine whether a sub-cluster of the clustered computing system is to remain active such that the processes of the sub-cluster may temporarily continue;

    (b) initiating shutdown of the sub-cluster when said attempting (a) does not determine within a first predetermined amount of time that the sub-cluster is to remain active;

    (c) to allow the processors of the sub-cluster to temporarily continue, delaying for a second predetermined amount of time after the first predetermined amount of time expires when said attempting (a) determines within the first predetermined amount of time that the sub-cluster is to remain active such that data corruption is avoided; and

    (d) taking over services of one or more other sub-clusters of the clustered computing system by one or more remaining sub-clusters after said delaying (c) for the second predetermined amount of time.

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