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On Thu, Jun 11, 2015 at 7:27 AM, D'ANDREA, JOE (JOE) <
jdandrea at research.att.com> wrote:

> Given a host with SSDs *and* HDDs (arrays and/or volume groups may or may
> not be involved), can a Cinder scheduler filter advise Cinder to "Use any
> SSD on host X" ... or "Use specific SSD Y on host X?"
>
> I've been rummaging around the docs to find an answer to this as well. So
> far, no luck. This is all I could find, and it doesn't look current (plus
> the formatting is off):
>
> http://docs.openstack.org/developer/cinder/devref/filter_scheduler.html
>
> Please don't hesitate to ask for more/specific info if it would help.
>
> Clues, pointers to specific docs, and sample code welcomed/appreciated!
>
> jd
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Not sure if this is a fit for use case, but you can use volume-types for
that and the filter scheduler will pick that up for you.

Check this doc here: [1]

NOTE:
You don't have to use the multi-backend feature on a single node if you
don't want to.  This works still with multiple unique volume-nodes as
well.  Let me know if you get hung up, happy to help.

Thanks
John

[1]: http://docs.openstack.org/admin-guide-cloud/content/multi_backend.html
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