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: <1228565812.10856.30.camel@localhost.localdomain>
Date:	Sat, 06 Dec 2008 12:16:52 +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 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.

Ian.
-- 
Ian Campbell

It's later than you think.

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