"Daniel P. Berrange" <berrange@xxxxxxxxxx> wrote on 05/12/2010 10:09:41 AM:
> >
> > 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.
>
> How do we decide that dmidecode is showing a valid UUID though. Is a
> UUID of all 0's, all 1's or all F's valid ?
With high probability, 32 hex chars that are the same can probably be considered 'wrong'.
Some details on how one could handle the different cases of valid/invalid UUIDs:
libvirtd.conf dmidecode handling
valid UUID valid UUID libvirtd.conf UUID overrides dmidecode's UUID
invalid UUID invalid UUID generate a temporary one; new one after libvirtd restart
valid UUID invalid UUID use valid UUID
invalid UUID valid UUID use valid UUID
Stefan
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