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Enhancing reliability and robustness of a cluster

  • US 6,766,470 B1
  • Filed: 03/29/2000
  • Issued: 07/20/2004
  • Est. Priority Date: 03/29/2000
  • Status: Expired due to Fees
First Claim
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1. A host in a cluster comprising a cluster fabric and one or more I/O controllers attached to the cluster fabric, the host comprising:

  • an operating system (OS); and

    a fabric control driver included in the operating system (OS) and configured to;

    to create, when each cluster adapter is installed to access one or more fabric-attached I/O controllers, a virtual fabric control device object representing connectivity to the cluster fabric, and one or more I/O controller device objects for the corresponding fabric-attached I/O controllers that constitute “

    child”

    device objects of the virtual fabric control device object;

    to destroy affected I/O controller device objects, while maintaining the virtual fabric control device object, when one cluster adapter malfunctions but another cluster adapter remains available; and

    alternatively, to destroy the affected I/O control device objects and the virtual fabric control device object, when all connectivity to the cluster fabric is lost.

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