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Re: [Xen-users] Install Ubuntu Server 10 as PV Guest

  • To: "Fajar A. Nugraha" <fajar@xxxxxxxxx>
  • From: KC LO <kclo2000@xxxxxxxxx>
  • Date: Mon, 21 Jun 2010 11:19:30 +0800
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Sun, 20 Jun 2010 20:21:05 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi all,
Thanks all!
I have copied kernel and ramdisk to the DOMU and it worked fine even the /boot is under partition of ext4.
However, the pygrub still fails for partition of ext3 with same error.
Below is my DOMU config
name = "test"
memory = "2048"
extra = "(hd0,0)/grub/menu.lst"
vif = [ 'bridge=eth0' ]
disk= [ 'file:/root/iso/ubuntu.img,xvda,w' ]
root="/dev/xvda1 ro"
When I replace with kernel and ramdisk, ubuntu can boot successfully.  Any ideas?
On 21 June 2010 09:47, Fajar A. Nugraha <fajar@xxxxxxxxx> wrote:
On Sun, Jun 20, 2010 at 2:59 PM, KC LO <kclo2000@xxxxxxxxx> wrote:
> RuntimeError: couldn't find bootloader config file in the image provided.

Quick check: did you happen to use ext4 for /boot? AFAIK pygrub (on
Xen 3.4 anyway) does not support ext4. ext3 works just fine.

> I have used kpartx -av /root/iso/ubuntu.img to mount the boot directory of

/root/iso is a strange place to put domU image :P

> It seems that it don't has the linux-xen kernel for PV client.  Is it the
> reason for it fail to boot?

It shouldn't matter. Ubuntu's has pv_ops enabled kernel. Also, if it
were a problem with kernel, you'd get a different error message.

As a temporary work around, you can try copying domU's kernel and
initrd to dom0, and load it on domU Xen config file using "kernel",
"ramdisk", and "extra" directive.


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