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Re: [libvirt] [libvirt PATCH] Port-profile ID support using IFLA_VF_PORT_PROFILE netlink msg




"Daniel P. Berrange" <berrange redhat com> wrote on 05/12/2010 08:48:58 AM:

>
> On Sat, May 08, 2010 at 10:13:36PM -0400, Stefan Berger wrote:
> > Scott Feldman <scofeldm cisco com> wrote on 05/08/2010 07:28:11 PM:
> >
> > >     VSI Manager ID      1 octet
> > >     VSI Type ID         3 octets
> > >     VSI Type ID Version 1 octet
> > >     VSI Instance ID    16 octets              <-- taken care of via
> > dimdecode
>
> The code can't rely on using dmidecode I'm afraid. Far too many
> manufacturers / machines have SMBIOS UUID field filled with complete
> garbage. eg my main server shows
>
>   # dmidecode |grep -i uuid
>    UUID: Not Settable
>
> So if we need a host UUID, I think we need to be able to either set it in
> the XML, or have it set in a per host config for the QEMU driver in libvirt.


I wouldn't make it QEMU specific. It should probably go into libvirt.conf, but
then libvirt.conf would need to be modified on every machine when installed.
How should the code react if no valid UUID is found in the config file?
Create a temporary one that changes with every restart of libvirt? Also dmidecode
should probably be used on those machine where it returns a valid UUID.
Once that would be done, we could show the UUID via 'virsh capabilities'
so management software can find it.

If above doesn't sound right, then providing it via the XML in vsi is probably
the way to go.

   Stefan

>
> Daniel
> --
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