Re: [Libvir] [RFC] Linux-VServer support
On Wed, Oct 31, 2007 at 02:39:05PM +0100, Daniel Hokka Zakrisson wrote:
Daniel Veillard wrote:
> I looked at the code, that seems clean but I have a concern about the
>overall XML format. Could you paste a couple of examples. Also I think
>Linux-VServer and OpenVZ kind of configuration may end up with the same
>kind of limitations or differences, so I would like to try to harmonize
>both format when possible.
Currently, the XML format is really limited. Are there any docs on what
should be there, or should I just look at the other drivers? As far as
harmonizing with the OpenVZ driver, I'm fine with that, but it seems to
be pretty limited and, to some degree at least, ugly.
Harmonizing the XML formats shouldn't be that hard ...
We discussed the OpenVZ format there
http://www.redhat.com/archives/libvir-list/2007-July/msg00347.html
and around there earlier:
http://www.redhat.com/archives/libvir-list/2007-March/msg00193.html
For network settings
http://www.redhat.com/archives/libvir-list/2007-July/msg00366.html
Here's an example:
virsh # dumpxml etch
<domain type='vserver' id='40001'>
<name>etch</name>
<uuid>c81f40f2-7e72-606d-7d07-097c1d56a5b5</uuid>
<memory>500000</memory>
<scheduler>
<param name='fill_rate1'>100</param>
<param name='interval1'>1000</param>
<param name='fill_rate2'>25</param>
<param name='interval2'>1000</param>
<param name='idle_time'>1</param>
</scheduler>
</domain>
I'm surprized there is no path or storage informations at all.
Are the parameters for the scheduler all integers ? If you really
never end up with an information set more structured than that then
<scheduler fill_rate1='100' interval1='1000' fill_rate2='25'
interval2='1000'
idle_time='1'/>
would probably be simpler. The question is would other kind of scheduler
use more structured parameters ? Seems to me it's not the case and that
ad-hoc parsing to convert {name, value} pairs would just work.
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/