linux-kernel - Re: [2.6.31-rc7] NFS4 client manager kthread spinning...

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Message-Id: <1251155907.6325.359.camel@heimdal.trondhjem.org>
Date:	Mon, 24 Aug 2009 19:18:27 -0400
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	Daniel J Blueman <daniel.blueman@...il.com>
Cc:	linux-nfs@...r.kernel.org, Chuck Lever <chuck.lever@...cle.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [2.6.31-rc7] NFS4 client manager kthread spinning...

On Tue, 2009-08-25 at 00:12 +0100, Daniel J Blueman wrote:
> Perhaps unrelated to the manager kthread, I reproduced a
> "nfs4_reclaim_open_state: Lock reclaim failed!" message ultimately -
> expected/significant?

It is not unexpected in a situation where you lose connection with the
server. Another client is then free step in and grab the lock.

We should probably be issuing a SIGLOST to the process and clear the
page cache in this situation. Currently, we cravenly write out the data
despite the fact that we're no longer holding a lock...

Cheers
  Trond
-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@...app.com
www.netapp.com
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