From owner-freebsd-stable@FreeBSD.ORG Fri Dec 26 17:38:45 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 462221065675 for ; Fri, 26 Dec 2008 17:38:45 +0000 (UTC) (envelope-from glen.j.barber@gmail.com) Received: from fk-out-0910.google.com (fk-out-0910.google.com [209.85.128.191]) by mx1.freebsd.org (Postfix) with ESMTP id C9FD08FC12 for ; Fri, 26 Dec 2008 17:38:44 +0000 (UTC) (envelope-from glen.j.barber@gmail.com) Received: by fk-out-0910.google.com with SMTP id k31so2914960fkk.11 for ; Fri, 26 Dec 2008 09:38:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=CGD4ynBT2NiaG44xY7NKMzt5ehFBB1Bp/qfjiMFrK1k=; b=Uz0VeWdkWYog169E9bbesF5K+hap37b7FxHpCl6Aqd3EMzQut24Cqxoacf2/Yr2c2A 7AJJh0ODhNhcH+1K0ur+1TqK0zL0vnLrx01x6jHKHDkVrz8kCwrEUaevLKevNCdVRkb+ vEYZDkR3Lk/JrrlxB0Y+To/tLarRnTjLycwWw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=cEmOh/TdouSwIT6iI0+PKa/dKQ5OSw0snCRpJOKbA+1CMMwANh3PX2wUmTOnhuFmWo o2HbcM1Sofg6LJmcCor9w9JiLRyMB2MRvQEFVmkc1Ef0sCg3+PwBCOrity2rz6gUUacn wVN7mLJf8hYp0OCQJoG3CPEvewrQxbG/8VFHg= Received: by 10.223.115.195 with SMTP id j3mr8283736faq.99.1230313123400; Fri, 26 Dec 2008 09:38:43 -0800 (PST) Received: by 10.223.110.142 with HTTP; Fri, 26 Dec 2008 09:38:43 -0800 (PST) Message-ID: <4ad871310812260938u2fa1ff59n2eee4f3f1f5fc058@mail.gmail.com> Date: Fri, 26 Dec 2008 12:38:43 -0500 From: "Glen Barber" To: "Kris Kennaway" In-Reply-To: <495515AE.4050606@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <4ad871310812260918h538d82c7s2f72f254bf08c26c@mail.gmail.com> <495515AE.4050606@FreeBSD.org> Cc: freebsd-stable Subject: Re: Kernel Trap during installworld caused unrecoverable system 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: Fri, 26 Dec 2008 17:38:45 -0000 On Fri, Dec 26, 2008 at 12:34 PM, Kris Kennaway wrote: > Glen Barber wrote: >> >> Hi folks. >> >> I was unfortunate enough to encounter a kernel trap in single user >> mode yesterday when upgrading from 7.1-RC1 to -RC2 using the typical >> build/install world. >> >> I'm still not sure what caused the trap, as the system was rebooting >> when I saw the screen. As one would expect, this led to an >> irrecoverable system; the system would automatically drop me into >> single user mode, as it could only mount the root directory; /bin/sh >> and /bin/csh would not work (had to use /restore/csh for the minimal >> digging I actually could do). >> >> So, now to the question. Given I could not mount anything other than >> /, would there have been any way for me to gather debugging >> information on what caused this failure? (FWIW, I am certain it is >> not a hardware failure.) > > You can proceed recovering the system using the tools in /rescue, and once > you have shared libraries working again, run savecore to save the crashdump > (assuming one was made). > Hi, Kris. I'll do some digging later today. I appreciate your response. -- Glen Barber