From owner-freebsd-bugs@FreeBSD.ORG  Mon Sep 21 22:40:03 2009
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 028501065672
	for <freebsd-bugs@hub.freebsd.org>;
	Mon, 21 Sep 2009 22:40:03 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id E57988FC19
	for <freebsd-bugs@hub.freebsd.org>;
	Mon, 21 Sep 2009 22:40:02 +0000 (UTC)
Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n8LMe2pj041010
	for <freebsd-bugs@freefall.freebsd.org>; Mon, 21 Sep 2009 22:40:02 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n8LMe2xg041009;
	Mon, 21 Sep 2009 22:40:02 GMT (envelope-from gnats)
Date: Mon, 21 Sep 2009 22:40:02 GMT
Message-Id: <200909212240.n8LMe2xg041009@freefall.freebsd.org>
To: freebsd-bugs@FreeBSD.org
From: Nathaniel W Filardo <nwf@cs.jhu.edu>
Cc: 
Subject: Re: kern/117688: [mpt] mpt disk timeout and hang
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Nathaniel W Filardo <nwf@cs.jhu.edu>
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 21 Sep 2009 22:40:03 -0000

The following reply was made to PR kern/117688; it has been noted by GNATS.

From: Nathaniel W Filardo <nwf@cs.jhu.edu>
To: bug-followup@freebsd.org
Cc:  
Subject: Re: kern/117688: [mpt] mpt disk timeout and hang
Date: Mon, 21 Sep 2009 18:31:44 -0400

 --zL7g4HaX89HhN13a
 Content-Type: text/plain; charset=us-ascii
 Content-Disposition: inline
 
 Acting on unrelated advice and a hunch, I have run "camcontrol tags $DISK -N
 16" on each of the disks attached to my mpt and have not yet suffered a
 recurrence.  When I had set tags to 24, the system was stable for a week or
 so but did ultimately succumb to this infinite loop of request
 cancellations.  camcontrol thinks that all the disks report that they can
 use up to 255 tags.
 
 Does that perhaps shed some light on the matter for somebody more qualified
 than yours truly?
 
 --nwf;
 
 --zL7g4HaX89HhN13a
 Content-Type: application/pgp-signature
 Content-Disposition: inline
 
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.9 (GNU/Linux)
 
 iEYEARECAAYFAkq3/tAACgkQTeQabvr9Tc9/6QCfXZX593Hc32+KEZcB2IbTbqDm
 o58An3P6qvKIp7c064VnLtuwcGEVioGz
 =J7P1
 -----END PGP SIGNATURE-----
 
 --zL7g4HaX89HhN13a--