From owner-freebsd-questions@FreeBSD.ORG  Thu Jul 16 09:10:07 2009
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 0FE24106564A
	for <freebsd-questions@freebsd.org>;
	Thu, 16 Jul 2009 09:10:07 +0000 (UTC)
	(envelope-from kpielorz_lst@tdx.co.uk)
Received: from lorca.tdx.co.uk (lorca.tdx.co.uk [62.13.128.6])
	by mx1.freebsd.org (Postfix) with ESMTP id A22178FC12
	for <freebsd-questions@freebsd.org>;
	Thu, 16 Jul 2009 09:10:06 +0000 (UTC)
	(envelope-from kpielorz_lst@tdx.co.uk)
Received: from WorkQuad64 (thebrick.dmpriest.net.uk [62.13.130.30])
	by lorca.tdx.co.uk (8.14.0/8.14.0/Kp) with ESMTP id n6G8wZWR045878
	for <freebsd-questions@freebsd.org>;
	Thu, 16 Jul 2009 09:58:36 +0100 (BST)
Date: Thu, 16 Jul 2009 09:56:47 +0100
From: Karl Pielorz <kpielorz_lst@tdx.co.uk>
To: FreeBSD-Questions <freebsd-questions@freebsd.org>
Message-ID: <30202D4CE92AA65697481B1E@WorkQuad64>
X-Mailer: Mulberry/4.0.8 (Win32)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Subject: Hanging when trying to 'rm' files off a read-only NFS export?
 [7.2-R]
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 16 Jul 2009 09:10:07 -0000


Hi,

I've got a 7.2-RELEASE box that has it's root file system mounted read/only 
via NFS. It hangs when trying to shutdown, at the "Writing entropy file:" 
point.

Having chased this down - it hangs *any* time you try to rm' a file off of 
the filesystem.

e.g. If I do:

"
recovery# cd /
recovery# touch test
touch: test: Read-only file system
recovery# rm COPYRIGHT
nfs server 10.0.0.1:/usr2/boot/os/7.2-i386: not responding
nfs server 10.0.0.1:/usr2/boot/os/7.2-i386: not responding
nfs server 10.0.0.1:/usr2/boot/os/7.2-i386: not responding
"

That last error is just repeated for infinity at about 5-10 second 
intervals.

Any suggestions?

The NFS server exports line being used is:

"
/usr2/boot/os -alldirs -maproot=root -ro -network 10.0.0.1 -mask 
255.255.255.0
"

The reason for the shutdown hang is that '/etc/rc.d/random' rm's the 
'/entropy' file if it exists as the system shuts down, and that rm never 
returns (the error output is redirected so you never see the errors) :(


-Karl