Open Stack

> -----Original Message-----
> From: Vishvananda Ishaya [mailto:vishvananda at gmail.com]
> Sent: Friday, November 02, 2012 2:22 AM
> To: OpenStack Development Mailing List
> Cc: vladimir at zadarastorage.com
> Subject: Re: [openstack-dev] Some idea on device assignment support
> 
> 
> On Nov 1, 2012, at 8:39 AM, heut2008 <heut2008 at gmail.com> wrote:
> 
> >
> > should  we create  a new table to  manage all these  devices? or  each
> > nova-compute node manage their own devices allocation,if there is no
> > new table to record this.  we need each kind of passthrough  devices
> > has a driver to keep track of how many resources is free and how many
> > is in use,  these info  is updated to schedule  by sending capability
> > info periodly.
> 
> I would prefer to avoid adding new tables unless we have to. It seems like the
> HostState class in host_manager needs to be able to support arbitrary keys for
> counting resources. Then we could create filter and weighting functions based
> on these arbitrary keys and update the consume method to consume resources
> from these keys based on instance_type_extra_specs.

So possibly information like vcpu number (if core_filter is enabled) can also be in such category?

Vish, how do you think about this idea to handle device assignment? If yes, I will create a blueprint for it.

Thanks
--jyh

> 
> Perhaps we need some kind of compute_metadata. there is a compute stats
> table which we might be able to abuse for this purpose.
> 
> Vish
> 
> 
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