From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030191AbWCALeH (ORCPT ); Wed, 1 Mar 2006 06:34:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030187AbWCALeG (ORCPT ); Wed, 1 Mar 2006 06:34:06 -0500 Received: from web33307.mail.mud.yahoo.com ([68.142.206.122]:15501 "HELO web33307.mail.mud.yahoo.com") by vger.kernel.org with SMTP id S1030191AbWCALeF (ORCPT ); Wed, 1 Mar 2006 06:34:05 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=EMIxP4eTecR0xYbfMeUK++5tOb8Z3/kjFGHyOoGwjGOPOGL+oK55421tsa3hMUNvBV8JiJHdVqrSiYTM3tX/T9vhsrq3KeBj6hwjgTahXIdkwYQM1QsGHRjnasNaSxD5basNmtje0reXUaJqraerHErYb6lUn/GDPk/frgLoRIs= ; Message-ID: <20060301113404.83641.qmail@web33307.mail.mud.yahoo.com> Date: Wed, 1 Mar 2006 03:34:04 -0800 (PST) From: li nux Subject: kexec x86_64: VFS: Cannot open root device, kernel panic To: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On x86_64 I am trying out kexec/kdump The root fs is reiserfs 1. Boot the current kernel with crashkernel=64M@16M 2. # cat /proc/cmdline root=/dev/cciss/c0d0p5 selinux=0 resume=/dev/cciss/c0d0p3 splash=silent numa =off crashkernel=64M@16M 3. Preload the capture kernel using kexec --load-panic /boot/vmlinux-2.6.16-rc4-3-kdump --args-linux --append="root= /dev/cciss/c0d0p5 selinux=0 resume=/dev/cciss/c0d0p3 splash=silent numa=off" 4. force a panic echo c > /proc/sysrq-trigger While booting the capture kernel, it panics with the following message: VFS: Cannot open root device "cciss/c0d0p5" or unknown-block(0,0) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) 1. When the capture kernel boots what happens to the io/nw drivers and any other modules which were inserted into the first kernel 2. Is there anything wrong with the steps I followed -lnxluv __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com