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Automatic clusterwide fail-back

  • US 8,443,232 B1
  • Filed: 03/31/2011
  • Issued: 05/14/2013
  • Est. Priority Date: 10/28/2005
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining that access by a first node in a computation cluster through a first controller to a storage resource has been restored;

    querying at least one of a plurality of active nodes in the computation cluster, whereinthe querying is performed in response to the determining that access by the first node through the first controller to the storage resource has been restored, andthe active nodes in the computation cluster are nodes in the computation cluster that depend on access to the storage resource at the time of the querying, and for which the first controller is a fail-back target;

    receiving confirmation, in response to the querying, that access to the storage resource through the first controller has been restored for each of the active nodes in the computation cluster; and

    instructing, based at least in part on the confirmation, the first node to communicate with the storage resource through the first controller.

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