From owner-freebsd-current@FreeBSD.ORG Sat Aug 23 20:32:08 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F07601065672 for ; Sat, 23 Aug 2008 20:32:08 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (bigknife-pt.tunnel.tserv9.chi1.ipv6.he.net [IPv6:2001:470:1f10:75::2]) by mx1.freebsd.org (Postfix) with ESMTP id 715078FC24 for ; Sat, 23 Aug 2008 20:32:08 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from zion.baldwin.cx (zion.baldwin.cx [IPv6:2001:470:1f11:75:2a0:d2ff:fe18:8b38]) (authenticated bits=0) by server.baldwin.cx (8.14.2/8.14.2) with ESMTP id m7NKVNZl020490; Sat, 23 Aug 2008 16:32:02 -0400 (EDT) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-current@freebsd.org Date: Sat, 23 Aug 2008 10:56:17 -0400 User-Agent: KMail/1.9.7 References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200808231056.18305.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [IPv6:2001:470:1f11:75::1]); Sat, 23 Aug 2008 16:32:02 -0400 (EDT) X-Virus-Scanned: ClamAV 0.93.1/8079/Sat Aug 23 12:49:14 2008 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-2.3 required=4.2 tests=AWL,BAYES_00, DATE_IN_PAST_03_06,NO_RELAYS autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: Christian Weisgerber Subject: Re: No root filesystem X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Aug 2008 20:32:09 -0000 On Saturday 23 August 2008 10:33:32 am Christian Weisgerber wrote: > Christian Weisgerber wrote: > > I just tried to update my box, but the new kernel wouldn't find a > > root device. This is a rather vanilla amd64 box, no zfs, one SATA > > disk, no other operating systems. > > > > It tried to mount ufs:/dev/ad6s1a, which is correct, but somehow > > came up empty. At the "Manual root filesystem specification" prompt, > > "?" did not list any devices. > > > > My previous good kernel is about 48 hours old, so this must have > > been introduced very recently. > > I've compared dmesgs and these lines are missing when I boot the bad > kernel: > > k8temp0: on hostb3 > > acd0: DVDR at ata2-master SATA150 > ad6: 143089MB at ata3-master SATA150 > > The drives aren't found, so not root filesystem. > > It turns out that the problem is caused by this commit: > > SVN rev 181987 on 2008-08-22 02:14:23Z by jhb > Extend the support for PCI-e memory mapped configuration space access: > > Reverting this fixed the problem. The drives are found again (and > so are the thermal sensors). > > The machine is based on an nForce 570 SLI MCP chipset (Asus M2N-SLI > Deluxe). Here's the dmesg, minus the witness chatter on root mount: Does 'acpidump -t' show a MCFG table? Also, can you get the output of 'devinfo -r' (with working kernel). -- John Baldwin