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[Xen-users] Re: Installation Issues: VFS Floppy / Crash

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Carl Robert Blesius <carl@xxxxxxxxxxx>
  • Date: Wed, 16 Nov 2005 03:41:56 -0500
  • Delivery-date: Wed, 16 Nov 2005 08:42:48 +0000
  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Just wanted to let you know that your suggestions worked Ernst
(I got sidetracked on something else and returned to this
just now). Changing the kernel root option to point to an
existing root device fixed my issue (I just stared up xend for
the first time and am getting my bearings). The quick
helpful response here is encouraging.


Date: Wed, 9 Nov 2005 10:40:31 +0100
From: Ernst Bachmann <e.bachmann@xxxxxxxx>
Subject: Re: [Xen-users] Installation Issues: VFS Floppy / Crash
To: xen-users@xxxxxxxxxxxxxxxxxxx
Message-ID: <200511091040.32362.e.bachmann@xxxxxxxx>
Content-Type: text/plain;  charset="iso-8859-1"

On Wednesday 09 November 2005 10:27, Carl Robert Blesius wrote:

New to Xen and having problems getting started.


No problems so far.

added this first portion to /boot/grub/menu.lst
title Xen 2.0 / XenLinux 2.6
root            (hd0,0)
kernel        /boot/xen-2.0.gz dom0_mem=131072
module        /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0

title           Debian GNU/Linux, kernel 2.4.27-2-386
root            (hd0,0)
kernel          /boot/vmlinuz-2.4.27-2-386 root=/dev/cciss/c0d0p1 ro
initrd          /boot/initrd.img-2.4.27-2-386



So, your root filesystem is on /dev/cciss/c0d0p1 or /dev/sda4 ?


everything looking good, but then the following happens during boot:

Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floopy.
VFS: Insert root floopy and press ENTER

I press Enter and !!!!CRASH!!!!

Well, thats not xen specific, you boot a linux kernel with wrong root= option,
and it tries hard to find another root device, falling back to nfs and

Not sure what to try next... any tips?


module        /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0


module /boot/vmlinuz-2.6-xen0 root=/dev/cciss/c0d0p1 ro console=tty0

and retry. If that doesn't work, your vmlinuz-2.6-xen0 is missing the right
drivers, you'll need to recompile it.


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