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Re: [Xen-users] Need an Idiot's Guide to Installing Xen & Libvirt on Ubuntu 10.04


  • To: listmail <listmail@xxxxxxxxxxxx>
  • From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
  • Date: Tue, 4 May 2010 13:22:44 -0700 (PDT)
  • Cc: Xen User-List <xen-users@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Tue, 04 May 2010 13:30:19 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

No,  virt-manager doesn't work on 10.04.
Just virt-install works with option --connect xen:///  in command line , it's better than nothing. It creates proper entry in xenstore
Variable VIRSH_DEFAULT_CONNECT_URI
    export VIRSH_DEFAULT_CONNECT_URI="xen:///"
is understood only by virsh, so domains from "xm list" may be
started via virsh, but "virsh list" is empty.

At install :
# virt-install --connect xen:///  -n DomName  -r 2048 .  .  .  .
creates PV & HVM DomUs  and relaunches  VNC console.

At runtime :
# xm list
# virsh start DomName
# vncviewer localhost:0

I would remind that "xm new dom.cfg" fails on Ubuntu's.

Obvious regression vs Ubuntu Server 9.10 (libvirt 0.7.0)
Just as Solaris Nevada 3 years ago :)

Boris.
--- On Tue, 5/4/10, listmail <listmail@xxxxxxxxxxxx> wrote:

From: listmail <listmail@xxxxxxxxxxxx>
Subject: Re: [Xen-users] Need an Idiot's Guide to Installing Xen & Libvirt on Ubuntu 10.04
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: "Xen User-List" <xen-users@xxxxxxxxxxxxxxxxxxx>
Date: Tuesday, May 4, 2010, 3:58 PM

This could be only partially related at best, but I think virt-manager
also uses libvirt. I remember trying virt-manager on 10.04 and the pvm
would disappear from the manager gui's list right after starting it.  It
would be interesting to see if any of the steps in your guide has a
positive effect on that as well.

Boris Derzhavets wrote:
> Done on Ubuntu Server 10.04
>
> http://bderzhavets.wordpress.com/2010/05/04/set-up-virt-install-to-work-with-xen-4-0-guests-on-top-of-ubuntu-10-04-server/
>
>
> --- On *Tue, 5/4/10, Boris Derzhavets /<bderzhavets@xxxxxxxxx>/* wrote:
>
>
>     From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
>     Subject: Re: [Xen-users] Need an Idiot's Guide to Installing Xen &
>     Libvirt on Ubuntu 10.04
>     To: "Tegger" <xen@xxxxxxxxx>, "Fajar A. Nugraha" <fajar@xxxxxxxxx>
>     Cc: "Xen User-List" <xen-users@xxxxxxxxxxxxxxxxxxx>
>     Date: Tuesday, May 4, 2010, 5:17 AM
>
>     Sorry , right after Hardy Heron 8.04
>     No Xen Dom0 support in Ubuntu Servers 8.10,9.04,9.10,10.04
>
>     Regarding Libvirt&Virtinst  Xen Support :
>
>     1. Seems to be OK in 9.10
>     2. Seems to be broken in 10.04
>     View :-
>     http://lxer.com/module/newswire/view/135142/index.html
>
>     I might be missing something in 10.04, but virt-install fails to
>     launch VNC console
>     as it was in 9.10, regardless virt-viewer stays exactly the same.
>     Install only (virtinst and python-virtinst)  does allow to run
>     virt-install for Xen 4.0 DomUs,
>     but vncviewer should be issued manually. DomU doesn't  restart
>     automatically
>     and requires:-
>     # virsh start DomainName
>     # vncviewer localhost:0
>
>     Submitting bug to launchpad doesn't make much sense. Xen support
>     dropped.
>     Libvirt 0.7.5 doesn't seem to  be properly working with Xen, i
>     mean virsh behavior
>     is strange. It does some things and some doesn't.
>
>
>     Boris.
>
>     --- On *Tue, 5/4/10, Boris Derzhavets /<bderzhavets@xxxxxxxxx>/*
>     wrote:
>
>
>         From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
>         Subject: Re: [Xen-users] Need an Idiot's Guide to Installing Xen
>         To: "Tegger" <xen@xxxxxxxxx>, "Fajar A. Nugraha" <fajar@xxxxxxxxx>
>         Cc: "Xen User-List" <xen-users@xxxxxxxxxxxxxxxxxxx>
>         Date: Tuesday, May 4, 2010, 4:57 AM
>
>         > The problem is that some versions of Ubuntu
>         Xen Dom0 support was dropped in 8.04 Hardy Heron.
>         Canonical likes KVM.
>
>         Boris.
>
>         --- On *Mon, 5/3/10, Fajar A. Nugraha /<fajar@xxxxxxxxx>/* wrote:
>
>
>             From: Fajar A. Nugraha <fajar@xxxxxxxxx>
>             Subject: Re: [Xen-users] Need an Idiot's Guide to
>             Installing Xen
>             To: "Tegger" <xen@xxxxxxxxx>
>             Cc: "Xen User-List" <xen-users@xxxxxxxxxxxxxxxxxxx>
>             Date: Monday, May 3, 2010, 11:07 PM
>
>             On Tue, May 4, 2010 at 5:15 AM, Tegger <xen@xxxxxxxxx> wrote:
>             > whats about
>             >
>             > apt-get install xen.... ?
>
>             The problem is that some versions of Ubuntu (and possibly
>             Debian)
>             doesn't have working Xen system, mainly due to lack of
>             working dom0
>             kernel. Boris' post is a good way to start on Ubuntu.
>
>             RHEL/Centos and opensuse users can simply use bundled Xen
>             version,
>             which despite being not the latest, is sufficient for most
>             server
>             usage scenario.
>
>             --
>             Fajar
>
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