[openstack-dev] A new nova service? nova-periodic?

Sandy Walsh sandy.walsh at rackspace.com
Tue Jan 15 14:06:10 UTC 2013

On 11/19/2012 10:57 PM, Michael Still wrote:
> What do people think about adding another nova service which runs beside
> nova-compute and runs periodic tasks which don't need any sort of shared
> global state with nova-compute? We could do it with a flag so that the
> default remains to use nova-compute for these periodic tasks, but if you
> "opt in" they're done with a nova-periodic instead.
> Thoughts?
> Michael

Wouldn't there be a problem with VM state management?

The compute manager runs on the premise that it's essentially single
threaded. If we have another process doing things in parallel we'll have
to move the state verification to another location (the conductor?)


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