DRDB driver does not honor clone volume size

[Sean McGinnis]

It's possible to create a volume from a source volume with a different size. The create_cloned_volume call into the driver could have a larger volume['size'] than the source volume. So the driver will need to create the clone, then check if it needs to extend the volume to a new size.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/291150

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/291150
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=0532c1583ba761a1a67b9608b46408827edec299
Submitter: Jenkins
Branch: master

commit 0532c1583ba761a1a67b9608b46408827edec299
Author: Danny Al-Gaaf <email address hidden>
Date: Thu Mar 10 13:45:09 2016 +0100

    DRBD driver: resize volume if cloned image is larger

    Extend volume if during create_cloned_volume() the new
    volume is larger than the image it was cloned from.

    Closes-Bug: #1554756

    Change-Id: Id43e18c32c241a30cb35effe1fab8effe4517ba9
    Signed-off-by: Danny Al-Gaaf <email address hidden>

[Thierry Carrez (ttx)]

This issue was fixed in the openstack/cinder 8.0.0.0rc1 release candidate.