linux-kernel - Re: [PATCH 0/4] 2.6.21-rc7 NFS writes: fix a series of issues

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Date:	Tue, 17 Apr 2007 21:13:50 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	florin@...ha.net (Florin Iucha)
Cc:	Trond Myklebust <Trond.Myklebust@...app.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Adrian Bunk <bunk@...sta.de>,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] 2.6.21-rc7 NFS writes: fix a series of issues

On Tue, 17 Apr 2007 23:07:30 -0500 florin@...ha.net (Florin Iucha) wrote:

> On Tue, Apr 17, 2007 at 11:54:45PM -0400, Trond Myklebust wrote:
> > > The good news is that the Gnome session log-in progresses to the point
> > > where both top and bottom bars are painted (gray) and the bottom bar
> > > is populated with icons (2.6.21-rc7 vanilla stops after displaying the
> > > splash).  The bad news is that it stops there.
> > > 
> > > Big-copy fails as well, after 2.5G transferred.
> > > 
> > > The process traces are at:
> > > 
> > >    http://iucha.net/nfs/21-rc7-nfs1/gnome-session
> > >    http://iucha.net/nfs/21-rc7-nfs1/big-copy
> > > 
> > > Regards,
> > > florin
> > 
> > Could you tell us a bit more about what happens when these hangs occur?
> > Does the networking stop too, or just NFS? How about CIFS?
> 
> The networking does not stop, I can ssh into and out of the box
> without any problem.
> 
> When 'gnome-session' hangs, it does not react to any clicks on the
> terminal or browser icons.  If I switch to a virtual console then come
> back into X, the panels (or splash) are gray - the icons disappear. I
> can switch to a virtual console and give it the three finger salute and
> it reboots cleanly.
> 
> When 'big-copy' hangs, if I switch to a different console and run
> 'lsof', '[u]mount', or use shell completion on a network mount then that
> process goes into D state.  I cannot umount the network shares nor
> stop autofs.  I cannot do a clean reboot, I have to ssh
> in and "echo s > /proc/sysrq-trigger; echo u > /proc/sysrq-trigger;
> echo b > /proc/sysrq-trigger" .

please, do `echo t > /proc/sysrq-trigger' first, send us the result.

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