From owner-freebsd-current@FreeBSD.ORG Fri Aug 29 21:32:25 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 67B6E1065670 for ; Fri, 29 Aug 2008 21:32:25 +0000 (UTC) (envelope-from caelian@gmail.com) Received: from ey-out-2122.google.com (ey-out-2122.google.com [74.125.78.27]) by mx1.freebsd.org (Postfix) with ESMTP id F15368FC0A for ; Fri, 29 Aug 2008 21:32:24 +0000 (UTC) (envelope-from caelian@gmail.com) Received: by ey-out-2122.google.com with SMTP id 6so322567eyi.7 for ; Fri, 29 Aug 2008 14:32:23 -0700 (PDT) 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=oKWRi9uJN93NAr8UZNznkRJfcm9oqNoQXQRYHc8h7Uk=; b=deq195DRWqo+KPhnZBV+MEjnNBHjqKYo/lrgKMe9AwJ1GXy61XQWQ9B4nRhzut51Lu aITyiMjT8vlYLIrnMC0VwjVd40/6q+WFaDpaj4HapjHu+cwHkL7v66ECcL/c28/VtKhy EIkrkH5JbzvfMaIc9ECdJewvgRc1WKQoQWn1w= 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=DPSNAVcj5aAScp+GeUi0FJKhooKjLy6AlaV26HPnv/ig2ujpL5yp280SYkYThbAI3E U6dGBIIS3gl2GYpvbKCzBXWiIvsrvoaiNlq2b1SeIc8x12qx6IAwR7yOU6YbVY5uyn+R yf+yeQPfjQBzbjerzUibF1V3NOzve79pl37E0= Received: by 10.210.24.7 with SMTP id 7mr2200635ebx.178.1220045543593; Fri, 29 Aug 2008 14:32:23 -0700 (PDT) Received: by 10.210.44.20 with HTTP; Fri, 29 Aug 2008 14:32:23 -0700 (PDT) Message-ID: Date: Fri, 29 Aug 2008 23:32:23 +0200 From: "Pascal Hofstee" To: "John Baldwin" In-Reply-To: <200808290951.44955.jhb@freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200808231056.18305.jhb@freebsd.org> <200808290951.44955.jhb@freebsd.org> Cc: freebsd-current@freebsd.org, 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: Fri, 29 Aug 2008 21:32:25 -0000 On Fri, Aug 29, 2008 at 3:51 PM, John Baldwin wrote: > So the reports I've seen of this all involve the Nvidia MCP55 ATA chipset, and > only the ata controller loses its marbles (so to speak). Christian ran a > patch that tested each PCI config read and they always returned the same > value from both methods. I think that this may be a weird bug in the ata > driver itself. It might be helpful to add printfs to instrument the various > nvidia-specific ATA routines in sys/dev/ata/ata_chipset.c to compare the old > and new kernels. I admit i am not exactly versed in kernel-level coding (though i do have a solid understanding of C itself). If perhaps you could give a couple of pointers to the kind of additional debug output you're looking for i am willing to play around with that to provide any additional information. -- Pascal Hofstee