From owner-freebsd-stable@FreeBSD.ORG Wed Jan 30 17:30:01 2008 Return-Path: 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 8203816A417 for ; Wed, 30 Jan 2008 17:30:01 +0000 (UTC) (envelope-from rermilov@team.vega.ru) Received: from mail.vega.ru (infra.dev.vega.ru [90.156.167.14]) by mx1.freebsd.org (Postfix) with ESMTP id 278E213C45B for ; Wed, 30 Jan 2008 17:30:00 +0000 (UTC) (envelope-from rermilov@team.vega.ru) Received: from [87.242.97.68] (port=53062 helo=edoofus.dev.vega.ru) by mail.vega.ru with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.68 (FreeBSD)) (envelope-from ) id 1JKGOa-000NOo-7B; Wed, 30 Jan 2008 17:06:44 +0000 Received: from edoofus.dev.vega.ru (localhost [127.0.0.1]) by edoofus.dev.vega.ru (8.14.2/8.14.2) with ESMTP id m0UH6hLP010631; Wed, 30 Jan 2008 20:06:43 +0300 (MSK) (envelope-from rermilov@team.vega.ru) Received: (from ru@localhost) by edoofus.dev.vega.ru (8.14.2/8.14.2/Submit) id m0UH6e0g010630; Wed, 30 Jan 2008 20:06:40 +0300 (MSK) (envelope-from rermilov@team.vega.ru) X-Authentication-Warning: edoofus.dev.vega.ru: ru set sender to rermilov@team.vega.ru using -f Date: Wed, 30 Jan 2008 20:06:40 +0300 From: Ruslan Ermilov To: Peter Holm Message-ID: <20080130170640.GA10170@team.vega.ru> References: <20060921113711.B70668@atlantis.atlantis.dp.ua> <1158833673.4894.5.camel@buffy.york.ac.uk> <20060921131547.GB29308@rambler-co.ru> <20060921151636.GA13806@peter.osted.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060921151636.GA13806@peter.osted.lan> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jan 2008 17:30:01 -0000 On Thu, Sep 21, 2006 at 05:16:36PM +0200, Peter Holm wrote: > 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? > I think this was the same problem as was diagnosed (minidumps + amd64 + SMP). Though it's not fixed yet, it's understood and its damage is avoided. Cheers, -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer