[openstack-dev] [glance] New image backend: StorPool

Sean McGinnis sean.mcginnis at gmx.com
Fri Mar 16 16:04:06 UTC 2018

Just updating the subject line tag to glance. ;)

On Fri, Mar 16, 2018 at 05:33:30PM +0200, Peter Penchev wrote:
> Hi,
> A couple of years ago I created a Nova spec for the StorPool image
> backend: https://review.openstack.org/#/c/137830/  There was some
> discussion, but then our company could not immediately allocate the
> resources to write the driver itself, so the spec languished and was
> eventually abandoned.
> Now that StorPool has a fully maintained Cinder driver and also a
> fully maintained Nova volume attachment driver, both included in the
> Queens release, and a Cinder third-party CI that runs all the tests
> tagged with "volume", including some simple Nova tests, we'd like to
> resurrect this spec and implement a Nova image backend, too.
> Actually, it looks like due to customer demand we will write the
> driver anyway and possibly maintain it outside the tree, but it would
> be preferable (and, obviously, easier to catch up with wide-ranging
> changes) to have it in.
> Would there be any major opposition to adding a StorPool shared
> storage image backend, so that our customers are not limited to
> volume-backed instances?  Right now, creating a StorPool volume and
> snapshot from a Glance image and then booting instances from that
> snapshot works great, but in some cases, including some provisioning
> and accounting systems on top of OpenStack, it would be preferable to
> go the Nova way and let the hypervisor think that it has a local(ish)
> image to work with, even though it's on shared storage anyway.  This
> will go hand-in-hand with our planned Glance image driver, so that
> creating a new instance from a Glance image would happen
> instantaneously (create a StorPool volume from the StorPool snapshot
> corresponding to the Glance image).
> If this will help the decision, we do have plans for adding a
> full-blown Nova third-party CI in the near future, so that both our
> volume attachment driver, this driver, and our upcoming Glance image
> driver will see some more testing.
> Thanks in advance, and keep up the great work!
> Best regards,
> Peter
> __________________________________________________________________________
> OpenStack Development Mailing List (not for usage questions)
> Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev

More information about the OpenStack-dev mailing list