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Date: Mon, 09 Jun 2008 13:59:03 -0400
To: Jeff Layton <jlayton@redhat.com>
From: "Talpey, Thomas" <Thomas.Talpey@netapp.com>
Subject: Re: rapid clustered nfs server failover and hung clients --
	how best to close the sockets?
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Cc: linux-nfs@vger.kernel.org, lhh@redhat.com, nfsv4@linux-nfs.org,
        nhorman@redhat.com, Wendy Cheng <s.wendy.cheng@gmail.com>
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At 01:51 PM 6/9/2008, Talpey, Thomas wrote:
>and NSM/NLM. NSM provides only notification, there's no way for
>either server to know for sure all the clients have completed
>either switch-to or switch-back.

Just in case it helps to understand why relying on NSM is so risky:

	<http://www.connectathon.org/talks06/talpey-cthon06-nsm.pdf>

Slides 16, 17 and 23, especially.

Tom.

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