From owner-freebsd-questions@FreeBSD.ORG  Wed Mar 18 11:26:28 2015
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 701CB2DB
 for <freebsd-questions@freebsd.org>; Wed, 18 Mar 2015 11:26:28 +0000 (UTC)
Received: from smtprelay01.ispgateway.de (smtprelay01.ispgateway.de
 [80.67.31.35])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 2C47F926
 for <freebsd-questions@freebsd.org>; Wed, 18 Mar 2015 11:26:27 +0000 (UTC)
Received: from [78.35.132.116] (helo=fabiankeil.de)
 by smtprelay01.ispgateway.de with esmtpsa (TLSv1.2:AES128-GCM-SHA256:128)
 (Exim 4.84) (envelope-from <freebsd-listen@fabiankeil.de>)
 id 1YYBxD-00073o-68
 for freebsd-questions@freebsd.org; Wed, 18 Mar 2015 12:16:03 +0100
Date: Wed, 18 Mar 2015 12:16:03 +0100
From: Fabian Keil <freebsd-listen@fabiankeil.de>
To: freebsd-questions@freebsd.org
Subject: Dumping on GELI consumers (was: FreeBSD 10.1 crashing under load)
Message-ID: <15982c3e.3980e72b@fabiankeil.de>
In-Reply-To: <4e9beab4.5e4e3963@fabiankeil.de>
References: <alpine.DEB.2.19.4.1502120004310.7303@trent.utfs.org>
 <4e9beab4.5e4e3963@fabiankeil.de>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
 boundary="Sig_/85_36R+cZ719Jfm_pxqloI8"; protocol="application/pgp-signature"
X-Df-Sender: Nzc1MDY3
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/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: Wed, 18 Mar 2015 11:26:28 -0000

--Sig_/85_36R+cZ719Jfm_pxqloI8
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable

Fabian Keil <freebsd-listen@fabiankeil.de> wrote:

> Christian Kujau <lists@nerdbynature.de> wrote:

> > Right now the system just reboots but leaves nothing in the system log =
as=20
> > to _why_ it crashed. I've configured a crash dump device as per [0] but=
 no=20
> > crash dump is ever taken. I'm running with encrypted swap (via GELI),=20
> > maybe crashdumping doesn't work with encrypted swap?
>=20
> IIRC it's not officially supported but you can dump on the device
> below the geli layer:
>=20
> fk@r500 ~ $swapinfo=20
> Device          1K-blocks     Used    Avail Capacity
> /dev/ada0s1b.eli   2097152        0  2097152     0%
> fk@r500 ~ $dumpon -l
> ada0s1b
>=20
> Saving the dump automatically after boot doesn't work (for me),
> but "service savecore start" works after "swapoff -a".

For the archives: It works as expected when enabling the swap device
with rc.d/swaplate. Currently this requires a small swapon patch:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D198598

Fabian

--Sig_/85_36R+cZ719Jfm_pxqloI8
Content-Type: application/pgp-signature
Content-Description: OpenPGP digital signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2

iEUEARECAAYFAlUJXnMACgkQBYqIVf93VJ0wqACVFcdbe51AQug0HEf+tcxEu9tY
igCgvC3qawuqr1AHmQ3zjU/pp4YdvAI=
=9qey
-----END PGP SIGNATURE-----

--Sig_/85_36R+cZ719Jfm_pxqloI8--