Re: [Xen-users] Distro upgrade in ubuntu PV guest?

[Thiago Camargo Martins Cordeiro <thiagocmartinsc@xxxxxxxxx>]

Finally I have the Ubuntu Karmic running as PV machine under my open source Xen and XenServer 5.5...

There is only one kernel package with support for Xen (CONFIG_XEN=y), and it is: "linux-ec2".

So, I have read this guide: http://community.citrix.com/display/ocb/2008/07/02/Installing+Ubuntu+on+XenServer;jsessionid=C126EB0931801626CB857A098C195EAE

And before convert my VM from HVM to PVM, I install the right kernel with:

aptitude install linux-ec2 grub
update-grub
vim /boot/grub/menu.lst (to change uuid to root (hd0,0))...

Cheers!
Thiago

2009/11/30 Boris Derzhavets <bderzhavets@xxxxxxxxx>

> Well, apparently the Karmic's kernel that have support for running as Xen pv domU is
> the -generic version...

It has   -server version. Details here:-

http://www.linuxtoday.com/high_performance/2009112800135OSSV

Boris.

---

From: Thiago Camargo Martins Cordeiro <thiagocmartinsc@xxxxxxxxx>
To: Fajar A. Nugraha <fajar@xxxxxxxxx>
Cc: howard chen <howachen@xxxxxxxxx>; xen-users@xxxxxxxxxxxxxxxxxxx
Sent: Mon, November 30, 2009 2:46:03 PM
Subject: Re: [Xen-users] Distro upgrade in ubuntu PV guest?

Well, apparently the Karmic's kernel that have support for running as Xen pv domU is the -generic version...

2009/11/18 Fajar A. Nugraha <fajar@xxxxxxxxx>

On Tue, Nov 17, 2009 at 8:47 PM, Thiago Camargo Martins Cordeiro

<thiagocmartinsc@xxxxxxxxx> wrote:
> The new Ubuntu Karmic DOES NOT have support for running as a PV domU!

While it may not explicitly support Xen domU, it runs just fine. That
is, assuming your dom0 (Xen and hardware/BIOS) supports running pv_ops
kernel.

> 2009/11/17 howard chen <howachen@xxxxxxxxx>

>> I have an ubuntu 8.04 pv guest running in PV mode (kernel:  Linux
>> ubuntu 2.6.24-16-xen)
>>
>> What would happen if I do a distro upgrade to a newer verion using
>> apt-get?

Generally it's pretty much the same thing that would happen if you do
a distro-upgrade to newer version. Some things to watch out though:
- Karmic's upstart uses /etc/init/, which is different from previous versions
- if you use Karmic's (or any pv_ops) kernel, xen console will be on
hvc0, so you should adjust your system (/etc/init/*, /etc/securetty)
to spawn login screen there
- with pv_ops kernel, disks will be mapped as xvda (and not sda/hda).
You may need to change domU config, fstab, and grub.conf manually to
match that.

Regards,

Fajar

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