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Date: Mon, 09 Jun 2008 11:51:51 -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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	<20080609111821.6e06d4f8@tleilax.poochiereds.net>
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Cc: linux-nfs@vger.kernel.org, lhh@redhat.com, nfsv4@linux-nfs.org,
        nhorman@redhat.com
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At 11:18 AM 6/9/2008, Jeff Layton wrote:
>No, it's not specific to NFS. It can happen to any "service" that
>floats IP addresses between machines, but does not close the sockets
>that are connected to those addresses. Most services that fail over
>(at least in RH's cluster server) shut down the daemons on failover
>too, so tends to mitigate this problem elsewhere.

Why exactly don't you choose to restart the nfsd's (and lockd's) on the
victim server? Failing that, for TCP at least would ifdown/ifup accomplish
the socket reset?

Tom.

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