linux-kernel - Re: [PATCH 0/3] NFS regression in 2.6.26?, "task blocked for more than 120 seconds"

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Message-Id: <1229279045.3721.1.camel@localhost.localdomain>
Date:	Sun, 14 Dec 2008 18:24:05 +0000
From:	Ian Campbell <ijc@...lion.org.uk>
To:	Trond Myklebust <trond.myklebust@....uio.no>
Cc:	linux-nfs@...r.kernel.org, Max Kellermann <mk@...all.com>,
	linux-kernel@...r.kernel.org, gcosta@...hat.com,
	Grant Coady <grant_lkml@...o.com.au>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Tom Tucker <tom@...ngridcomputing.com>
Subject: Re: [PATCH 0/3] NFS regression in 2.6.26?, "task blocked for more
	than 120 seconds"

On Sat, 2008-12-06 at 12:16 +0000, Ian Campbell wrote:
> On Mon, 2008-12-01 at 22:09 +0000, Ian Campbell wrote:
> > On Sun, 2008-11-30 at 19:17 -0500, Trond Myklebust wrote: 
> > > Can you see if the following 3 patches help? They're against 2.6.28-rc6,
> > > but afaics the problems are pretty much the same on 2.6.26.
> > 
> > Thanks.
> > 
> > The server was actually running 2.6.25.7 but the matching sources have
> > since been removed the backports.org so I've reproduce with 2.6.26 and
> > now I'll add the patches.
> 
> Just a small progress report. Anecdotally I thought that unpatched
> 2.6.26.7 was worse than 2.6.25.7, mostly because it hung twice in the ~1
> day I was running it where previously it was less frequent than once per
> day.
> 
> With the patched server the client ran OK for 2.5 days then mysteriously
> hung, the logs show none of the normal symptoms and my wife reset it
> before I got home so I've no real clue what happened but I'm inclined to
> think it was unrelated for now. I'll get back to you in a week or so if
> the problem hasn't reoccurred.

$ uptime 
 18:15:29 up 9 days, 22 min,  1 user,  load average: 0.74, 0.64, 0.46

This is on the problematic client, so it looks like the server side fix
has sorted it. Thanks very much Trond.

Ian.
-- 
Ian Campbell

You have only to mumble a few words in church to get married and few words
in your sleep to get divorced.

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