Symptoms
Consider the following scenario:
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You have a Server Message Block (SMB) 3.0+ client that accesses files on a scale-out file server that is hosted in a Windows Server 2012 R2-based cluster.
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A failover cluster node temporarily loses access to a Cluster Shared Volume (CSV) disk, and you encounter the following conditions:
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The CSV enters the "auto-pause" state.
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The SMB client connects to a different cluster node and tries to reconnect all the previously opened handles.
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In this scenario, the failover cluster enters a cluster-wide deadlock that limits cluster availability for two minutes unless the watchdog timer restarts the cluster.
Resolution
To resolve this issue, install update rollup 2955164. For more information about how to obtain this update rollup package, click the following article number to view the article in the Microsoft Knowledge Base:
2955164 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: May 2014
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More Information
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
