From owner-freebsd-stable@FreeBSD.ORG  Fri Oct 23 11:53:32 2009
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id E1AF31065676
	for <freebsd-stable@freebsd.org>; Fri, 23 Oct 2009 11:53:32 +0000 (UTC)
	(envelope-from prvs=0547a2b378=ob@gruft.de)
Received: from main.mx.e-gitt.net (service.rules.org [IPv6:2001:1560:2342::2])
	by mx1.freebsd.org (Postfix) with ESMTP id 6DCAF8FC14
	for <freebsd-stable@freebsd.org>; Fri, 23 Oct 2009 11:53:32 +0000 (UTC)
Received: from ob by main.mx.e-gitt.net with local (Exim 4.69 (FreeBSD))
	(envelope-from <ob@gruft.de>) id 1N1Ii3-000C4o-L4
	for freebsd-stable@freebsd.org; Fri, 23 Oct 2009 13:53:31 +0200
Date: Fri, 23 Oct 2009 13:53:31 +0200
From: Oliver Brandmueller <ob@e-Gitt.NET>
To: freebsd-stable@freebsd.org
Message-ID: <20091023115331.GE95002@e-Gitt.NET>
Mail-Followup-To: freebsd-stable@freebsd.org
References: <E1N1Hom-000HpE-6S@dilbert.ticketswitch.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <E1N1Hom-000HpE-6S@dilbert.ticketswitch.com>
User-Agent: Mutt/1.5.20 (2009-06-14)
Sender: Oliver Brandmueller <ob@gruft.de>
Subject: Re: problems with gmirror on ggate over slow link
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 23 Oct 2009 11:53:33 -0000

Hi,

On Fri, Oct 23, 2009 at 11:56:24AM +0100, Pete French wrote:
> If the remote diisc is actually on a very close machine - e.g. a server
> plugged into the same ether net - then all works fine. If I make
> the remote disc somewhere actually substantially further away on the
> nbetwork, however, then when I attach the disc it starts to rebuild the
> mirror but then fails a fraction of a second later thus:
> 
> GEOM_MIRROR: Device mysql0: rebuilding provider ggate1a.
> GEOM_MIRROR: Synchronization request failed (error=5). ggate1a[WRITE(offset=1310720, length=131072)]
> GEOM_MIRROR: Device mysql0: provider ggate1a disconnected.
> GEOM_MIRROR: Device mysql0: rebuilding provider ggate1a stopped.
> 
> The interesting this is that the problem is only with gmirror, not with
> the underlying ggate disc which remains attached and accessible. I tested
> this by adding a second partition (ggate1b in the example above) and
> mounting a UFS filesystem on that.

Just a wild guess, have you tried to set kern.geom.mirror.timeout to a 
higher value?

- Olli

-- 
| Oliver Brandmueller          http://sysadm.in/         ob@sysadm.in |
|                        Ich bin das Internet. Sowahr ich Gott helfe. |