From owner-freebsd-geom@FreeBSD.ORG Mon Dec 19 23:06:18 2005 Return-Path: X-Original-To: freebsd-geom@freebsd.org Delivered-To: freebsd-geom@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9F03416A41F for ; Mon, 19 Dec 2005 23:06:18 +0000 (GMT) (envelope-from pjd@garage.freebsd.pl) Received: from mail.garage.freebsd.pl (arm132.internetdsl.tpnet.pl [83.17.198.132]) by mx1.FreeBSD.org (Postfix) with ESMTP id E7E2343D53 for ; Mon, 19 Dec 2005 23:06:17 +0000 (GMT) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id 3BE4A52B3E; Tue, 20 Dec 2005 00:06:16 +0100 (CET) Received: from localhost (dls108.neoplus.adsl.tpnet.pl [83.24.48.108]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id 1994F50F93; Tue, 20 Dec 2005 00:06:10 +0100 (CET) Date: Tue, 20 Dec 2005 00:05:06 +0100 From: Pawel Jakub Dawidek To: Walter Hop Message-ID: <20051219230506.GF91822@garage.freebsd.pl> References: <1926276358.20051219235324@lifeforms.nl> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="/QKKmeG/X/bPShih" Content-Disposition: inline In-Reply-To: <1926276358.20051219235324@lifeforms.nl> X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 User-Agent: mutt-ng/devel-r535 (FreeBSD) X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-0.5 required=3.0 tests=BAYES_00,RCVD_IN_NJABL_DUL, RCVD_IN_SORBS_DUL autolearn=no version=3.0.4 Cc: freebsd-geom@freebsd.org Subject: Re: dumpon on a gmirror system X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Dec 2005 23:06:18 -0000 --/QKKmeG/X/bPShih Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Dec 19, 2005 at 11:53:24PM +0100, Walter Hop wrote: +> Hello all, +>=20 +> I hope this is the right mailinglist. +>=20 +> One of our machines running gmirror has become unstable and seems to +> panic at times. I would like to enable crash dumps which requires +> dumping to a swap partition. My problem is: all the partitions are +> gmirror-ed, and gmirror partitions can't be used with dumpon because +> GEOM is already down at the time of dumping. +>=20 +> Someone on a mailinglist had suggested to dump to one of the gmirror +> components directly (/dev/ad4s1b in my case). This would bring the +> disks out of sync, although it wouldn't be critical if dumping works +> exactly as planned. Nevertheless, it would be devastating if I'd ruin +> the mirror set. Is this practice recommended? +>=20 +> I also don't seem to have an entry for ad4s1b in /dev, is there a way +> to get around this? Are you sure you mirror partitions and not slices nor whole disks? Output of 'gmirror list' will be helpful. +> How do people using gmirror exclusively handle the problem of saving +> crash dumps? I, for one, prefer ddb(4), which is enough for me. Other probably have stable systems and don't need dumps at all:) --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --/QKKmeG/X/bPShih Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDpzyiForvXbEpPzQRAp0IAJ9jrkK+cBe8+ofvKUbEOrIBwbfMZgCeJaPL 7qYQWWUo2cCxeIWIlj2dQNQ= =VgZb -----END PGP SIGNATURE----- --/QKKmeG/X/bPShih--