libvirt users - Oct 2010 - bootloader_args element

I am trying to set the hostname of VMs at boot time and banging my head
against the wall.  I am using

virsh create xen-config.xml

to boot a Scientific Linux 5.5 image.  I have gone through the libvirt
domain xml format at

http://libvirt.org/formatdomain.html#elementsResources

and I don't see anywhere to set the hostname in there.  I am using pygrub
for the bootloader and noticed the  "bootloader_args" element.  Can I
pass
an argument to the kernel at boot to set the hostname?  Can I pass anything
to the kernel at boot time?  Nothing I have tried seems to work.  I have
tried sifting through the pygrub code (for lack of documentation) and no
luck yet.  I think my challenge is with pygrub but any help would be
appreciated.  I have also posted this at

http://lists.xensource.com/archives/html/xen-users/2010-10/msg00143.html

and

http://www.linuxquestions.org/questions/linux-virtualization-90/setting-hostname-in-xen-config-xml-file-836993/

but still waiting...

Cheers,

David
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20101012/76cf3157/attachment.htm>

On Tue, Oct 12, 2010 at 10:14:23AM -0700, David Grundy
wrote:
> and I don't see anywhere to set the hostname in there.  I am using
pygrub
> for the bootloader and noticed the  "bootloader_args" element.
I have had no success using bootloader_args for anything, under Xen PV
with pygrub. It seems to cause my domains to not boot if I put that into
the libvirt XML, even simple stuff like single-user mode. YMMV.

--Igor
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: Digital signature
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20101012/dc8a5264/attachment.sig>