KB2673129 – Slow Shutdown Time For A Cluster Node In A Windows 2008R2-based cluster

And the final patch (there’s more so you should check out the Failover Clustering patching wiki) for clustering.  I’m only listing the Hyper-V related ones. 

“Consider the following scenario:

  • You set a preferred node in a Windows Server 2008 R2-based failover cluster.
  • You set the failback policy of this node to Allow Failback, select the Failback between option, and then set a failback time interval.
  • You move a cluster resource group from the preferred node to another node.
  • You try to shut down the preferred node.

In this scenario, the shutdown operation stops responding at the Shutting down Cluster Service phase. It takes about 30 minutes for the node to shut down.

This issue occurs because the Cluster service tries to fail back the resource group every 15 minutes when the following conditions are true:

  • A failback time interval is set.
  • The time that is used to shut down the node is longer than the failback time interval.

When the failback process fails, the thread that performs the operation sleeps for 15 minutes. If you try to shut down the Cluster service on this node, the operation waits until the cluster shutdown times out”.

A supported hotfix is available from Microsoft.

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