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Integrating control of service during cluster failover

  • US 7,694,166 B1
  • Filed: 11/30/2005
  • Issued: 04/06/2010
  • Est. Priority Date: 11/30/2005
  • Status: Active Grant
First Claim
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1. A method in a clustered storage server system, comprising:

  • detecting a failure in a first storage server having a first control-of-service policy to control a first storage system, wherein the first control-of-service policy includes a first plurality of scheduling rules to prioritize file system access requests within the first storage server during normal operation of the first storage server; and

    executing a cluster takeover procedure in a second storage server having a second control-of-service policy to control a second storage system, wherein the second control-of-service policy includes a second plurality of scheduling rules to prioritize file system access requests within the second storage server during normal operation of the second storage server, the cluster takeover procedure comprising;

    taking control of the first storage system with the second storage server; and

    merging the first control-of-service policy with the second control-of-service policy in the second storage server to create a merged control-of-service policy in the second storage server to control the first storage system and the second storage system.

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