[libvirt] xl and libvirt.

[Alvin Starr]

I have been trying do some simulations of an openstack environment on my 
workstation that is running xen and libvirt.
I managed to create nested HVM environments under lx but found a number 
of shortfalls in libxl code.

I have added a nestedhvm as a domain feature and was looking at 
inspecting the domain configuration when I realized that the persistant 
data is keept in config files in /var/lib/xen/userdata.....

Libvirt and lx have incompatible file names and are using different 
config formats.
Libvirt keeps the data as XML and xl keeps them as xm config files.

This means that libvirt domains cannot be manged with xl or xl domains 
managed by libvirt.
Part of me thinks that sticking with the XL file format would be nice 
from the point of view of being able to use xenlight tools once the 
domain is configured.
At the very least it may make sense to keep an XL copy of the config 
file in a format that xenlight can use.

To achieve my original goal of managing a nested HVM environment from 
libvirt I need to get the CPUID flags working but I do believe that it 
would be nice to have the various xen and libvirt tools being able to 
talk to each other.

Any pearls of wisdom would be greatly appreciated.

-- 
Alvin Starr                   ||   voice: (905)513-7688
Netvel Inc.                   ||   Cell:  (416)806-0133
alvin at netvel.net              ||