From owner-freebsd-stable@FreeBSD.ORG  Thu Sep 21 15:16:50 2006
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: freebsd-stable@freebsd.org
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 7250216A412
	for <freebsd-stable@freebsd.org>; Thu, 21 Sep 2006 15:16:50 +0000 (UTC)
	(envelope-from pho@holm.cc)
Received: from relay02.pair.com (relay02.pair.com [209.68.5.16])
	by mx1.FreeBSD.org (Postfix) with SMTP id B9B1E43D6A
	for <freebsd-stable@freebsd.org>; Thu, 21 Sep 2006 15:16:43 +0000 (GMT)
	(envelope-from pho@holm.cc)
Received: (qmail 9626 invoked from network); 21 Sep 2006 15:16:41 -0000
Received: from unknown (HELO peter.osted.lan) (unknown)
	by unknown with SMTP; 21 Sep 2006 15:16:41 -0000
X-pair-Authenticated: 80.165.155.106
Received: from peter.osted.lan (localhost.osted.lan [127.0.0.1])
	by peter.osted.lan (8.13.6/8.13.6) with ESMTP id k8LFGedr014013;
	Thu, 21 Sep 2006 17:16:40 +0200 (CEST)
	(envelope-from pho@peter.osted.lan)
Received: (from pho@localhost)
	by peter.osted.lan (8.13.6/8.13.6/Submit) id k8LFGax7014012;
	Thu, 21 Sep 2006 17:16:36 +0200 (CEST) (envelope-from pho)
Date: Thu, 21 Sep 2006 17:16:36 +0200
From: Peter Holm <peter@holm.cc>
To: Ruslan Ermilov <ru@freebsd.org>
Message-ID: <20060921151636.GA13806@peter.osted.lan>
References: <20060921113711.B70668@atlantis.atlantis.dp.ua>
	<1158833673.4894.5.camel@buffy.york.ac.uk>
	<20060921131547.GB29308@rambler-co.ru>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20060921131547.GB29308@rambler-co.ru>
User-Agent: Mutt/1.4.2.1i
Cc: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua>, freebsd-stable@freebsd.org
Subject: Re: Minidumps in -STABLE and "smaller than physical memory"
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: Thu, 21 Sep 2006 15:16:50 -0000

On Thu, Sep 21, 2006 at 05:15:47PM +0400, Ruslan Ermilov wrote:
> On Thu, Sep 21, 2006 at 11:14:33AM +0100, Gavin Atkinson wrote:
> > On Thu, 2006-09-21 at 11:44 +0300, Dmitry Pryanishnikov wrote:
> > > Hello!
> > > 
> > >    I've noticed (with the 2-day old RELENG_6) that I still can't configure my
> > > 256Mb swap partition as a dump device for i386 machine with 1Gb RAM despite
> > > having minidumps enabled:
> > > 
> > > root@test2# sysctl debug.minidump
> > > debug.minidump: 1
> > > root@test2# dumpon -v /dev/ad0s3b
> > > /dev/ad0s3b is smaller than physical memory
> > > 
> > > Am I correctly understand that minidumps should lift the restriction
> > > 
> > >  	sizeof(dumpdev) >= sizeof(RAM)
> > 
> > Yes.
> > 
> > http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/dumpon/dumpon.c.diff?r1=1.22&r2=1.23
> > needs to be MFC'd.
> > 
> I sent an MFC request to re@.
> 

>From time to time I've had problems with minidumps on HEAD. Calling
doadump() seems to work ok, but after a reset there's no dump. I
haven't had time to test this systematically. Has anybody else seen
this problem?

- Peter