+1

Very excited to see this in and usable

Duncan Thomas
On Jan 30, 2015 2:56 AM, "Philipp Marek" <philipp.ma...@linbit.com> wrote:

> Hi all,
>
> > in Paris (and later on, on IRC and the mailing list) I began to ask
> around
> > about providing a DRBD storage driver for Nova.
> > This is an alternative to using iSCSI for block storage access, and would
> > be especially helpful for backends already using DRBD for replicated
> > storage.
> any news about this?
>     https://review.openstack.org/#/c/134153/
>
>
> To reiterate:
>   * Spec was submitted in time (Nov 13)
>   * Spec wasn't approved, because the Cinder implementation
>     (https://review.openstack.org/#/c/140451/) merge got delayed,
>     because its prerequisite (https://review.openstack.org/#/c/135139/,
>     Transition LVM Driver to use Target Objects) wasn't merged in time,
>     because on "deadline day" (Dec. 17) Gerrit was so much used that
>     this devstack run got timeouts against some python site during
>     setup
>   * "Spec Freeze Exception" was submitted in time
>
> http://lists.openstack.org/pipermail/openstack-dev/2015-January/054225.html
>   * Having DRBD for Cinder is good, but using the *same* protocol
>     to the Nova nodes should really help performance (and reliability);
>     for example, the transitions
>       Network -> Kernel -> iSCSI daemon -> Kernel -> Block Device
>     wouldn't be needed anymore; the Kernel could directly respond to the
>     queries, and in the near future even using RDMA (where available).
>     Reliability should be improved as the Nova node can access multiple
>     storage nodes _at the same time_, so it wouldn't matter if one of them
>     crashes for whatever reason.
>
>
> Please help us *now* to get the change in. It's only a few lines in
> a separate driver, so until it gets configured it won't even be
> noticed!
>
>
> And yes, of course we're planning to do CI for that Nova driver, too.
>
>
> Regards,
>
> Phil
>
> --
> : Ing. Philipp Marek
> : LINBIT | Your Way to High Availability
> : DRBD/HA support and consulting                 http://www.linbit.com :
>
> DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
>
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