From: Willy Tarreau <willy@w.ods.org>
To: Christoph Pleger <Christoph.Pleger@uni-dortmund.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: NFS hangs in 2.4.27
Date: Thu, 9 Sep 2004 08:43:22 +0200 [thread overview]
Message-ID: <20040909064322.GA1444@alpha.home.local> (raw)
In-Reply-To: <20040908140730.1a3b77c7.Christoph.Pleger@uni-dortmund.de>
On Wed, Sep 08, 2004 at 02:07:30PM +0200, Christoph Pleger wrote:
> Hello,
>
> Since a few days I have great NFS problems on six Linux machines. The
> execution of "ps aux" shows that processes are hanging for they are
> waiting for the completion of uninterruptable NFS I/O and the system
> utilization becomes very high.
>
> The hangs occurred since the installation of Kernel 2.4.27 (used 2.4.26
> before), so I guess that Kernel 2.4.27 introduces the problems with NFS.
> I am not sure about that, but since I reinstalled the old 2.4.26-Kernel
> on one of the six computers, that machine works fine.
>
> Has someone else experienced NFS hangs under 2.4.27 so far?
I have seen this only with the preempt patch applied and enabled. But since
the kernel also had lots of other patches applied, I cannot tell that it is
only NFS+preemt alone. It deadlocked on a spinlock() in nfs_sync_page() IIRC.
But no problem so far with preempt disabled.
Regards,
Willy
prev parent reply other threads:[~2004-09-09 6:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-08 12:07 NFS hangs in 2.4.27 Christoph Pleger
2004-09-09 6:43 ` Willy Tarreau [this message]
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