Article ID: 2008795 - View products that this article applies to.
On a Windows Server 2008 R2 cluster with Cluster Shared Volume(CSV) feature enabled, a user may be unable to access a CSV volume from a passive (non-coordinator) node. When clicking on a CSV volume, explorer may hang. One or all of the following events may be displayed:
When accessing a CSV volume from a passive (non-coordinator) node, the disk I/O to the owning (coordinator) node is routed through a 'preferred' network adapter and requires SMB be enabled on that network adapter. For SMB connections to work on these network adapters, the following protocols must be enabled:
Review each cluster node and verify the following protocols are enabled the network adapters available for Cluster use
1. Click Start , click Run , type ncpa.cpl , and then click OK .
The Event Id:5120 mentioned above will be logged anytime that there is a problem connecting over the network using SMB to the owning node. If the connection is restored within a few minutes, then there there may be no ill affects other than slowness of the VM’s due to lack of I/O completing.
The Event Id:5142 indicates that the non-owning node is disconnected and CSV is no longer queuing the I/O. As a result, the VM’s on the node logging the errors will see the storage as disconnected instead of just slow in responding.
The preferred network is the network with the lowest cluster network metric value. If the preferred network is unavailable (due to problems or re-configuration) then the cluster network fault tolerance will cause the network with the next lowest metric to
be used. If that network is not configured to allow SMB connection, then the above error will be encountered.
Hyper-V: Using Live Migration with Cluster Shared Volumes in Windows Server 2008 R2 : http://technet.microsoft.com/en-us/library/dd446679(WS.10).aspx
Cluster Shared Volumes Support for Hyper-V : http://technet.microsoft.com/en-us/library/dd630633(WS.10).aspx
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.
Article ID: 2008795 - Last Review: August 17, 2012 - Revision: 6.0
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