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Message-Id: <20070902045401.1b8a347c.akpm@linux-foundation.org>
Date: Sun, 2 Sep 2007 04:54:01 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Gabor Kovacs <kgabor@...yai.elte.hu>
Cc: linux-kernel@...r.kernel.org
Subject: Re: User process freezes on NFSv4 client
> On Thu, 16 Aug 2007 18:19:14 -0400 Gabor Kovacs <kgabor@...yai.elte.hu> wrote:
> Hello All,
>
> I've got NFSv4 problems on a big partition. Both NFS server and client run
> kernel version 2.6.21.6. Exported file system is on an AoE etherdrive
> (/dev/etherd/e1.1) device, having no partition table, XFS file system. The
> file system is pretty large, 8.9T. Typical file size 1-10M.
>
> On the client side, after much time (3-7 days) of file intensive task, the
> user process freezes. Top command shows a "D" state for it, but many other
> command trying to "touch" it, freezes, too. (ps, fuser /nfs_dir, w) None of
> the frozen processes can be killed. New processes, however, can access the
> nfs4 mounted file system. Any idea?
>
Next time it happens, please run
echo t > /proc/sysrq-trigger
then send the output of `dmesg -s 1000000'. Thanks.
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