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https://blueprints.launchpad.net/cinder/+spec/local-storage-volume-scheduling


https://blueprints.launchpad.net/cinder/+spec/cinder-force-host

the two blueprint can solve your problem.


On Thu, Jan 9, 2014 at 5:26 PM, Thomas Thrainer <thomasth at google.com> wrote:

> Hi,
>
> I try to figure out how to force cinder volumes on the same host as the VM
> it is attached to (or will be attached to). OTOH, I would still like to
> take advantage of nova-scheduler for automatic host selection for VMs. I
> don't want to use an availability zone per host, because then the host
> selection would have to be done by the API client. So I'm wondering what
> the best solution for this use-case might be.
>
> While researching, I stumbled upon topology aware placement [0] which
> seems interesting, but I couldn't find any further information about the
> status of it. Also, there seems to be some effort going into building a
> central scheduler instead of having nova-scheduler and cinder-scheduler
> [1][2], but again, I couldn't figure out what the current status of this is.
>
> So, my question is if this use-case will be better supported in the future
> (Icehouse maybe already?), and how a workaround could look like for now.
>
> Thanks a lot,
> Thomas
>
> [0]: https://etherpad.openstack.org/p/HavanaTopologyAwarePlacement
> [1]:
> https://www.mail-archive.com/openstack-dev@lists.openstack.org/msg07981.html
> [2]:
> http://openstack.10931.n7.nabble.com/cinder-metrics-with-nova-scheduler-tt22974.html#a23038
>
> --
> Thomas Thrainer | Software Engineer | thomasth at google.com |
>
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-- 
Shake Chen
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