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Re: [Xen-users] [Just a new try] Questsions about Stubdomains


  • To: xen-users@xxxxxxxxxxxxx
  • From: Lars Kurth <lars.kurth@xxxxxxx>
  • Date: Tue, 11 Dec 2012 11:48:57 +0000
  • Delivery-date: Tue, 11 Dec 2012 11:50:20 +0000
  • List-id: Xen user discussion <xen-users.lists.xen.org>

Ian,
is the http://wiki.xen.org/wiki/StubDom page up-to-date? It would be good to clear this up (and move the old stuff - if it doesn not work any more) into a Xen 3.x and Xen 4.x section. I can do this, I just don't know from this thread whether the page is still valid.
Lars

On 11/12/2012 09:37, Ian Campbell wrote:
On Tue, 2012-12-11 at 07:22 +0000, xen@xxxxxxxxxx wrote:
Hello all,

I hope that it now works and there is no longer problems with my
mailsystem. It could be that it already worked but it doesn't look
like because the mail don't came back from the list.

I am trying to setup stubdomains for my running domains on Xen 4.2. I
read this wiki articles:


http://wiki.xen.org/wiki/StubDom
http://wiki.xen.org/wiki/Device_Model_Stub_Domains

I am able to activate a stubdomain for a normal domain but this domain
is so basic in it's resources (e.g. 32MB RAM) that the normal guest
can't be used.
I'm not sure what you mean by this.

  How can I tell the domain that it should use a
stubdomain with an explicit configuration? Do I need to create a
config file for the stubdomain in the same folder where the
configuration for the normal domain is stored? Or how could I do this?
Enabling stubdomains for an existing HVM guest should be a case of
adding a single line to its configuration file:
    device_model_stubdomain_override = 1

This option is described in the xl.cfg(5) man page and is referenced by
the second wiki page you linked above.

If you continue to have trouble then please provide log files and your
guest configuration file.
http://wiki.xen.org/wiki/Reporting_Bugs_against_Xen contains a handy
list of places to look for logs etc.

And should I use stubdomains for PV and HVM guest or does only HVM
guests support stubdomains?
A qemu stubdomain only makes sense for an HVM guest since a PV guest has
no emulated devices and therefore no emulated devices (which is what a
qemu stub provides).

Would be greate to get a few answers.

Best Regards


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