Re: [Xen-users] How to create an ubuntu 10.04 virtual machine on ubuntu 8.04?

[Dario Fiumicello - Antek <fiumicello@xxxxxxxx>]

Il 27/01/2011 10:14, Marco Weber ha scritto:
> hello,
>
> I'm new to xen. (Before i've used ESX...)
> On the ubuntu 8.04 host machine i've always created images with
> xen-create-image...
> Unfortunately it cannot create lucid (10.04) images...
>
> i've already tried to do it by foot, but the VM didn't startup... :/
> vi /etc/xen/newlucid.cfg
> dd if=/dev/zero of=disk,img bs=1024k seek=17k count=0
> mkfs -t ext3 disk,img
> dd if=/dev/zero of=swap.img bs=1024k seek=1024 count=0
> mkswap swap.img
> mount -o loop UbuntuXen.img /tmp/xenloop
> debootstrap lucid /tmp/xenloop
> umount /tmp/xenloop
>
> Anyways, how can this be done easily? How do you setup your XEN VMs?
> Is there a way to just install it with a iso-image (cdrom) as i would do it
> with VMware?
>
> Thanks a lot in advance for any reply...
>
> See you,
>             Marco
Hi, I didn't had Ubuntu 8.04 as dom0 but instead I had debian Lenny. To 
install Ubuntu 10.04 I do the following (note that I have not Full 
Virtualization):
- In another computer I did an alternate ubuntu installation of 10.04 
using virtualbox
- Ubunto must be installed in ext3. I don't know if ext4 will work but 
while in dubt I prefer to use ext3 (so it is also easy to mount 10.04 
images in Lenny/Ubuntu8.04)
- Once installed you have to remove grub2 and install (and configure) 
grub-legacy because pygrub in lenny / ubuntu 8.04 doesn't boot grub2 domUs
- You have to install the ec2 kernel (sudo apt-get install linux-ec2) 
which is the only one which is capable to run on xen PVM environment.
- I don't remember if kernel is automagically added to 
/boot/grub/menu.lst. If not do it yourself
Now your image is ready. Shut down virtualbox and convert the virtual 
disk image into a raw image by using the tool qemu-img (apt-get install 
qemu-kvm); example
qemu-img convert -O raw yourimage.vdi yuorimage.raw

Now copy the image on the Xen machine and try to boot it with pygrub.

It worked for me.

HTH

Dario

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