From owner-freebsd-stable Sun Sep 1 12: 8:26 2002 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 8040137B401 for ; Sun, 1 Sep 2002 12:08:19 -0700 (PDT) Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0F00B43E91 for ; Sun, 1 Sep 2002 12:08:18 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: from apollo.backplane.com (localhost [127.0.0.1]) by apollo.backplane.com (8.12.5/8.12.4) with ESMTP id g81J8HPQ014777; Sun, 1 Sep 2002 12:08:17 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.12.5/8.12.4/Submit) id g81J8HbP014776; Sun, 1 Sep 2002 12:08:17 -0700 (PDT) (envelope-from dillon) Date: Sun, 1 Sep 2002 12:08:17 -0700 (PDT) From: Matthew Dillon Message-Id: <200209011908.g81J8HbP014776@apollo.backplane.com> To: "Marc G. Fournier" Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Crash with KVM monitoring in place ... References: <20020901153933.S27764-100000@hub.org> Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG :> 'trace'. If over several crashes it dies in the same place :> then we at least have an idea where to look. :> :> How large is your swap space, or your largest free partition? : :My swap is only ~2gig, and my drive looks like: Right... then do as I suggested in a previous email. Reduce the machine's memory to 2G via /boot/loader.conf: hw.physmem="2048m" Then reboot and turn on dumps to the swap device. If you can reproduce the crash with the machine downgraded to 2G we should get a dump we can work with. :Awhile back, someone posted this to the lists: : :http://www.cs.duke.edu/~anderson/freebsd/netdump/readme.html : :To do dumps to a 'dump server' ... i tried it on a 4.4 kernel, I believe :it was, and altho it looked like it was dumping, I got zero bits on the :remote server, so I'm figuring changes in the kernel itself ... : :Any chance on getting such working (and maybe into) the latest source :trees? It seems to be it would be most valuable, especially as more and :more "large servers" are coming online? I've got the two servers sitting :next to each other, so network isn't an issue, and they are both running :fxp interfaces ... the code itself is at: : :http://www.cs.duke.edu/~anderson/freebsd/netdump/ : :with the netdump_client.c code being 17k, and the _server.c code being 7k, :so they aren't that large .. the code appears to be from '00, so don't :know what would have to be changed to reflect -STABLE's present state ... I really like the idea of doing dumps over the net. The code looks workable though a good deal of work is probably required to make the network stuff work again. I don't have time to do it myself, though, but this sounds like a good project for someone. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message