From owner-freebsd-stable@FreeBSD.ORG Wed Jun 4 10:32:52 2003 Return-Path: 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 D9CAF37B401 for ; Wed, 4 Jun 2003 10:32:52 -0700 (PDT) Received: from angelica.unixdaemons.com (angelica.unixdaemons.com [209.148.64.135]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1B56043F85 for ; Wed, 4 Jun 2003 10:32:52 -0700 (PDT) (envelope-from bmilekic@unixdaemons.com) Received: from angelica.unixdaemons.com (bmilekic@localhost.unixdaemons.com [127.0.0.1])h54HWmZn077935; Wed, 4 Jun 2003 13:32:48 -0400 (EDT) Received: (from bmilekic@localhost) by angelica.unixdaemons.com (8.12.9/8.12.1/Submit) id h54HWluE077933; Wed, 4 Jun 2003 13:32:47 -0400 (EDT) (envelope-from bmilekic@unixdaemons.com) X-Authentication-Warning: angelica.unixdaemons.com: bmilekic set sender to bmilekic@unixdaemons.com using -f Date: Wed, 4 Jun 2003 13:32:47 -0400 From: Bosko Milekic To: Noor Dawod Message-ID: <20030604173247.GA77306@unixdaemons.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i cc: FreeBSD-STABLE Mailing List Subject: Re: Sudden and unexplained reboots X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 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, 04 Jun 2003 17:32:53 -0000 On Wed, Jun 04, 2003 at 08:13:24PM +0200, Noor Dawod wrote: > Hello, > > I'm having a problem in one of the FreeBSD boxes that I manage. All of a > sudden, and for no particular reason, the machine just reboots abruptly. > When it loads up again, I cannot see an indication that there's anything > wrong in the configuration. > > By the way, the machine is running like this for few months, and no > changes were made lately. Machine has 2GB RAM, RAID-5 disk array and a > Xeon 933Mhz CPU. There's enough space on disk and more free RAM to drive > 5 desktop computers. > > Anyone got an idea how to debug the problem? and better, how to resolve > and fix it? > > Thanks in advance. > > /Noor Build a kernel with INVARIANTS and DDB options and see if you get dumped to the console debugger following a trap or panic at some point. Also, obviously, make sure that you're not getting any power surges or anything of the sort; basically anything hardware-related that could possibly cause a reboot. If you're plugged into a series-connected outlet, I would advise to try a different outlet. If you're plugged into a UPS, make sure that the load on it is not too high. -- Bosko Milekic bmilekic@unixdaemons.com bmilekic@FreeBSD.org