Re: [Xen-users] trouble installing

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Feb 21, 2011 at 08:14:33PM -0600, Ted Brenner wrote:
>    Thanks for the help Pasi.  So why use Debian network scripts in lieu of
>    Xen scripts when the Debian wiki doesn't suggest it?
> 

It has been a 'best practive' to use distro provided network scripts
for years already..

Upcoming Xen 4.1 with the new default xl/libxl toolstack actually
as a default requires you to set up the networking using the distro scripts!


>    I removed 'bridge=eth0' from the network-script line but I'm still having
>    trouble with the xen daemon.  When I boot up it isn't running and when I
>    shutdown it still hangs apparently because it's getting no response from
>    eth0.  Do I have to do something to make my change to xend-config.sxp
>    permanent?
> 
>    When I try and start up xend I see this error:
> 
>    # xend start
>    ifdown: interface eth0 not configured
>    RTNETLINK answers: Device or resource busy
>    /etc/xen/scripts/network-bridge: line 240: sigerr: command not found
> 

You have to remove the whole "network-script" line !

-- Pasi


>    On Mon, Feb 21, 2011 at 4:18 AM, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
> 
>      On Sun, Feb 20, 2011 at 10:14:06PM -0600, Ted Brenner wrote:
>      >    Hi,
>      >
>      >    I'm trying to setup Xen 4.0 on Debian Squeeze.  I've been following
>      this
>      >    wiki for the most part.  [1][2]http://wiki.debian.org/Xen.  When I
>      first went
>      >    through the process, after rebooting I just got a blank black
>      screen with
>      >    no grub.  So after reinstalling my OS I've been rebooting after
>      every step
>      >    and everything works fine (not sure why I got the grub error the
>      first
>      >    time).  But after uncommenting the network-script part of
>      xen-config.sxp
>      >    file and adding 'network-bridge antispoof=yes', things start to act
>      up.
>      >    The first thing I noticed was that shutdowing down the dom0 now
>      hangs,
>      >    usually at the point of stopping the xend daemon.  So I tried
>      adding
>      >    'bridge=eth0'.  Nothing really change but I still installed a domU,
>      Ubuntu
>      >    Maverick.  However, I couldn't connect as I was getting errors like
>      this:
>      >
>      >    Error: Device 0 (vif) could not be connected. Hotplug scripts not
>      working.
>      >
>      >    Checking the hotplug log it said this
>      >    can't add vif1.0 to bridge eth0: Operation not supported
>      >
> 
>      Sounds like 'eth0' is not a bridge. So probably wrong bridge= parameter
>      used for that vm.
> 
>    eth0 is my dom0 network interface so the problem is that it is already in
>    use correct?
> 
> 
>      >    So I'm wondering how I should be setting up the network-scripts.
>       Every
>      >    instruction I read mentions it but they all seem to have slightly
>      >    different variants.  Any help would be much appreciated.  I'm
>      running on
>      >    amd64 platform.
>      >
> 
>      I'd recommend to disable xen network-script in /etc/xen/xend-config.sxp
>      and set up the required bridges using debian network scripts.
> 
> 
> 
>      -- Pasi
> 
>    --
>    Ted Brenner
> 
> References
> 
>    Visible links
>    1. mailto:pasik@xxxxxx
>    2. http://wiki.debian.org/Xen

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