From owner-freebsd-questions@FreeBSD.ORG Sun Dec 16 20:45:28 2007 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BBC2116A417; Sun, 16 Dec 2007 20:45:28 +0000 (UTC) (envelope-from cliftonr@lava.net) Received: from outgoing02.lava.net (outgoing02.lava.net [64.65.64.125]) by mx1.freebsd.org (Postfix) with ESMTP id 89FB813C442; Sun, 16 Dec 2007 20:45:28 +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 AA3C8B8A47; Sun, 16 Dec 2007 10:28:06 -1000 (HST) Received: by malasada.lava.net (Postfix, from userid 102) id 15980153882; Sun, 16 Dec 2007 10:28:04 -1000 (HST) Date: Sun, 16 Dec 2007 10:28:03 -1000 From: Clifton Royston To: Jeremy Chadwick Message-ID: <20071216202803.GC2036@lava.net> Mail-Followup-To: Jeremy Chadwick , Elliot Finley , freebsd-stable@freebsd.org, User Questions References: <20071215235810.GA81924@eos.sc1.parodius.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071215235810.GA81924@eos.sc1.parodius.com> User-Agent: Mutt/1.4.2.2i Cc: freebsd-stable@freebsd.org, User Questions Subject: Re: OS bug in taskq 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: Sun, 16 Dec 2007 20:45:28 -0000 On Sat, Dec 15, 2007 at 03:58:10PM -0800, Jeremy Chadwick wrote: > On Sat, Dec 15, 2007 at 01:03:14PM -0700, Elliot Finley wrote: > > I have: > > dumpdev="AUTO" > > in /etc/rc.conf and: > > ... > > in the kernel and I'm still unable to obtain a crash dump. Hopefully > > there is enough info in this email for a hacker to point me in the > > right direction to debug this. > > I can't help with the panic itself, but the reason for the inability to > obtain a crash dump is mentioned in a thread I started in November: > > http://lists.freebsd.org/pipermail/freebsd-stable/2007-November/038069.html > > The explanation of the problem was documented best by Doug Barton in > this thread (over at freebsd-rc@): > > http://lists.freebsd.org/pipermail/freebsd-rc/2007-November/001263.html > > Open PR: > > http://www.freebsd.org/cgi/query-pr.cgi?pr=118255 Why does it work *sometimes* then? Or was this particular problem introduced more recently than the 6.2 branch? I have two apparently similarly configured systems running 6.2p8, with identical hardware, identical apps, and identical load, and I have at least attempted to configure them the same way. Both have /var/crash set up and "dumpon" enabled in rc.conf. Both crashed in the last week. I got a dump on one, which I now need to analyze, but have twice failed to get a dump on the other. (Once this past week, once the previous month.) -- 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