Extending a volume without enough quota isn't caught at API level

[Sam Morrison]

I think this should be caught at API level, it means instant feedback for the user and also the volume goes to "error_extending" which can confuse a user thinking the volume is no longer usable.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/65436

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/67011

[Vincent Hou (houshengbo)]

Please review the patch https://review.openstack.org/#/c/65436/ for this issue.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/65436
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=24d6b57d1cb0c4f91545f85ea9c766d1e0ec50a0
Submitter: Jenkins
Branch: master

commit 24d6b57d1cb0c4f91545f85ea9c766d1e0ec50a0
Author: Vincent Hou <email address hidden>
Date: Wed Jan 8 02:52:54 2014 -0500

    Validate the quota in the API layer for volume extend

    The user needs a friendly message feedback if the quota exceeds when
    the volume is about to extend.

    Change-Id: Ifd523ac5e9039861cf87711dc5c4842b5cb524c2
    Closes-Bug: #1256763

[John Griffith (john-griffith)]

Removed tags, this is independent of drivers and moves the quota check up to the API to provide error response to the caller.