On Wed, May 12, 2010 at 10:06:34AM -0400, Stefan Berger wrote:
"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
the XML, or have it set in a per host config for the QEMU driver in
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.
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 ?
Once that would be done, we could show the UUID via 'virsh capabilities' so management software can find it.
Agree, it would be useful to expose a host UUID in the capabilities. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|