Hello,
I am trying to figure out how to define a VM's CPU Socket:Core:Threads 
topology.  For licensing reasons we can't create VM's that map each core as a 
separate socket.

KVM and libvirt both support the ability to define the socket:core 
ratio/topology, but I can't see how to get openstack to request those 
capabilities.

I've tried the libvirt_cpu_mode and libvirt_cpu_model options, but they only 
seem to control the cpu's name, and what flags are passed through.

It seems that if I could only get nova to create the xml file with a topology 
section eg: <toplogy sockets='1' cores='4' threads='1'/> then it would work.

This feature request seems related: https://bugs.launchpad.net/nova/+bug/1199019

But I'm not sure if it's possible to define it within nova as yet anyway.

Cheers, Evan.
Evan Fraser

Trade Me | Storage Engineer

P

+64 4 803 2756

M

+64 22 087 4032

E

evan.fra...@trademe.co.nz<mailto:evan.fra...@trademe.co.nz>



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