From owner-freebsd-questions@FreeBSD.ORG Mon Apr 10 10:55:25 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B19A916A401 for ; Mon, 10 Apr 2006 10:55:25 +0000 (UTC) (envelope-from wmoran@collaborativefusion.com) Received: from mx00.pub.collaborativefusion.com (mx00.pub.collaborativefusion.com [206.210.89.199]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3E2F643D46 for ; Mon, 10 Apr 2006 10:55:25 +0000 (GMT) (envelope-from wmoran@collaborativefusion.com) Received: from localhost (monrovll-cuda1-24-53-251-44.pittpa.adelphia.net [24.53.251.44]) (AUTH: LOGIN wmoran, TLS: TLSv1/SSLv3,256bits,AES256-SHA) by wingspan with esmtp; Mon, 10 Apr 2006 06:55:24 -0400 id 0005642E.443A399C.00000751 Date: Mon, 10 Apr 2006 06:55:23 -0400 From: Bill Moran To: eol1@yahoo.com Message-Id: <20060410065523.54f8396f.wmoran@collaborativefusion.com> In-Reply-To: <20060410040401.79401.qmail@web51901.mail.yahoo.com> References: <20060402201721.GA58258@xor.obsecurity.org> <20060410040401.79401.qmail@web51901.mail.yahoo.com> Organization: Collaborative Fusion X-Mailer: Sylpheed version 1.0.6 (GTK+ 1.2.10; i386-portbld-freebsd5.4) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org Subject: Re: Hard crash on 6.x -- reproducible, multiple people affected X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 Apr 2006 10:55:25 -0000 Peter Thoenen wrote: > --- Kris Kennaway wrote: > > On Sun, Apr 02, 2006 at 04:09:30PM -0400, Anish Mistry wrote: > > > > It's not clear what he means by "hard crash", but he also says > > > > power off", which is the part that is most confusing to me. > > > Hmmm...I missed that part. Yeah, if it powers off then I'm not > > sure what you can do to debug it. > > By hard crash I mean the box just instantly powers off. No shutdown > syncs, no error, panic's, or dump generated, nothing logged in syslog, > and I have a serial cable hooked up to another another dumb terminal > hoping to maybe catch a panic or some debug message dumped out over > serial as it goes down but nothing there also. It just stops. > > Also note that this didn't happen on 5.x. And when not running those > particular ports the box stays up just fine for weeks on end. Just > tried again with 6.1 PRERELEASE and same issue. > > > About all I can think of is to try to reproduce the problem with > > enough logging enabled (e.g. running the binary under ktrace), with > > sync-mounted filesystem, and hope that the last few entries give the > > software developer enough of a clue what the process was doing at the > > time of shutdown (the operation itself probably will not be logged) > > that he can focus the investigation further. > > Want to walk me through this and will do. As I said, reproducible. You could also install the setup under Bochs and enable full logging. -- Bill Moran Potential Technologies http://www.potentialtech.com