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Re: [Xen-API] Configuration options from the hypervisor?

To: <xen-api@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-API] Configuration options from the hypervisor?
From: Magnus Therning <magnus.therning@xxxxxxxxxx>
Date: Tue, 16 Nov 2010 16:50:51 +0000
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On Tue, Nov 16, 2010 at 03:30:48PM +0000, Cutter 409 wrote:
> Thanks, but I'm actually referring to per VM configuration data. I'm trying
> to get some custom configuration strings passed to the hypervisor when a VM
> starts.
> 
> I was hoping that somehow I could read the other_config section from the
> hypervisor, but maybe it's only possible to pass data after starting the
> guest with an event channel?

I don't quite understand what you are asking about, unless by "hypervisor" you
actually mean Xapi :-)

Maybe it would be easier for me to understand if you tell us what you would
like to do more specifically?

Cheers,
M

> On Tue, Nov 16, 2010 at 3:00 AM, Magnus Therning 
> <magnus.therning@xxxxxxxxxx<mailto:magnus.therning@xxxxxxxxxx>> wrote:
> On Mon, Nov 15, 2010 at 09:33:26PM +0000, Cutter 409 wrote:
> > Hello,
> >
> > I'm trying to pass configuration options to the hypervisor.
> >
> > It seems like each VM has an "other_config" section that I should be able to
> > add options to, but I can't seem to figure out how to read them from the
> > hypervisor.
> > In userland I can set the options using " session.xenapi.VM.add_to_
> > other_config(  ) " (In Python) but is there any way to retreive it from the
> > hypervisor?
> >
> > If not, is there another mechanism where I can store additional
> > configuration data?
> 
> Arguments for the hypervisor are passed by the boot loader.  Take a look at
> /boot/extlinux.conf.
> 
> Cheers,
> M
> 
> --
> Magnus Therning
> magnus.therning@xxxxxxxxxxxxx<mailto:magnus.therning@xxxxxxxxxxxxx>          
> Jabber: magnusth@eng
> 
> There does not now, nor will there ever, exist a programming language
> in which it is the least bit hard to write bad programs.
>     -- Flon's Axiom
> 
> 
> Perl is another example of filling a tiny, short-term need, and then
> being a real problem in the longer term.
>     -- Alan Kay
> 
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-- 
Magnus Therning
magnus.therning@xxxxxxxxxxxxx          Jabber: magnusth@eng

There does not now, nor will there ever, exist a programming language
in which it is the least bit hard to write bad programs.
     -- Flon's Axiom


Perl is another example of filling a tiny, short-term need, and then
being a real problem in the longer term.
     -- Alan Kay

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