From owner-freebsd-stable@FreeBSD.ORG Thu May 1 21:02:36 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 4589F106567C for ; Thu, 1 May 2008 21:02:36 +0000 (UTC) (envelope-from cliftonr@lava.net) Received: from outgoing02.lava.net (pie.lava.net [IPv6:2001:1888:0:1:230:48ff:fe5b:3b8c]) by mx1.freebsd.org (Postfix) with ESMTP id 0DD9B8FC18 for ; Thu, 1 May 2008 21:02:36 +0000 (UTC) (envelope-from cliftonr@lava.net) Received: from malasada.lava.net (malasada.lava.net [64.65.64.17]) by outgoing02.lava.net (Postfix) with ESMTP id D26CC170D87; Thu, 1 May 2008 11:02:34 -1000 (HST) Received: by malasada.lava.net (Postfix, from userid 102) id 4FEC3153882; Thu, 1 May 2008 11:02:34 -1000 (HST) Date: Thu, 1 May 2008 11:02:34 -1000 From: Clifton Royston To: Stephen Clark Message-ID: <20080501210233.GA15528@lava.net> Mail-Followup-To: Stephen Clark , freebsd-stable@freebsd.org References: <4819BB3A.6000407@earthlink.net> <481A16E7.8040709@earthlink.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <481A16E7.8040709@earthlink.net> User-Agent: Mutt/1.4.2.2i Cc: freebsd-stable@freebsd.org Subject: Re: reboot after panic 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: Thu, 01 May 2008 21:02:36 -0000 On Thu, May 01, 2008 at 03:15:51PM -0400, Stephen Clark wrote: > Matthew X. Economou wrote: > >Steve, > > > >I recall having to set dumpdev in /etc/rc.conf before I could get > >FreeBSD to reboot automatically after a panic. I have dumpdev=AUTO > >set on all of my headless servers. If you are feeling especially > >brave, you can also set fsck_y_enable=YES and background_fsck=NO. > > > >Good luck! ;) > > > Hmmm... I have that set. It only seems to not reboot on one > system I have. FWIW, I've had problems with 6.2 not rebooting reliably on several SMP P4 Xeon systems; the problem seems to be that sometimes while dumping it either freezes completely or double-faults and hangs at that point until physically reset. This problem appeared simultaneously on several SMP servers when they were upgraded to 6.2, after they had run reliably for years on FreeBSD 4.x. Adding insult to injury, when it does dump successfully, I don't reliably get an image saved in /var/crash. (And if I did, it doesn't appear that it would do me any good as nobody is interested any longer in problems with 6.2.) Thankfully, via a combination of adding RAM and tuning kernel parameters I eventually got them to where they'll reliably stay up for reasonably long stretches, certainly more than the 20 days uptime I was getting when I first upgraded them. -- Clifton -- Clifton Royston -- cliftonr@iandicomputing.com / cliftonr@lava.net President - I and I Computing * http://www.iandicomputing.com/ Custom programming, network design, systems and network consulting services