From owner-freebsd-stable@FreeBSD.ORG Mon Oct 29 20:45:30 2007 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 C0DF716A41A for ; Mon, 29 Oct 2007 20:45:30 +0000 (UTC) (envelope-from oleg@vsi.ru) Received: from serv4.vsi.ru (serv4.vsi.ru [80.82.32.19]) by mx1.freebsd.org (Postfix) with ESMTP id 4794D13C4A5 for ; Mon, 29 Oct 2007 20:45:29 +0000 (UTC) (envelope-from oleg@vsi.ru) Received: from delloleg (dell-berry.vsi.ru [88.83.197.200]) by serv4.vsi.ru (8.13.8+Sun/8.13.8) with SMTP id l9TCFs2a017193 for ; Mon, 29 Oct 2007 15:16:00 +0300 (MSK) Message-ID: <02d001c81a25$753e04d0$c8c55358@delloleg> From: "Oleg Derevenetz" To: Date: Mon, 29 Oct 2007 15:15:46 +0300 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 Subject: Fw: kern/104406: [ufs] Processes get stuck in "ufs"stateunderpersistent CPU load 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: Mon, 29 Oct 2007 20:45:30 -0000 >>> > Oleg, one thing you can do to make this less painful is to >>> > run your machine's console over serial port. >>> > >>> > First get a crossover serial cable, make sure it works from one >>> > box to another, it should be easy to run "tip com1" on both >>> > boxes to ensure that it works. >>> > >>> > Then you just need to add console=comconsole to /boot/loader.conf >>> > and your box's console should come over serial. >>> > >>> > Then on the machine watching the console, you can just do this: >>> > >>> > % script >>> > Script started, output file is typescript >>> > % tip com1 >>> > ...do ddb stuff now... >>> > ...stop tip >>> > % exit >>> > >>> > now you should have everything logged into a file called "typescript" >>> > should save you a big headache. >>> >>> Thanks, I'll try it in the monday morning. > > I posted a followup to kern/104406 that includes all information listed in "Debugging Deadlocks" chapter of FreeBSD Developer's > > Handbook. Can anyone take a look on it and say - is this certainly a hardware problem or some sort of software problem ? Anyone ? :-) -- Oleg Derevenetz OOD3-RIPE Phone: +7 4732 539880 Fax: +7 4732 531415 http://www.vsi.ru CenterTelecom Voronezh ISP http://isp.vsi.ru