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

To: "Fajar A. Nugraha" <fajar@xxxxxxxxx>
Subject: Re: [Xen-users] Distro upgrade in ubuntu PV guest?
From: Thiago Camargo Martins Cordeiro <thiagocmartinsc@xxxxxxxxx>
Date: Mon, 30 Nov 2009 09:46:03 -0200
Cc: howard chen <howachen@xxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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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

> 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.



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