NetApp iscsi drivers not working with c-bak

[Navneet]

Iscsi direct drivers fail in c-bak when the volume is created after cinder backup service is started. Its because the way c-bak is designed to work as it spawns cinder drivers in c-bak separately than c-vol. The situation is also mentioned in the filed bug 1228223. NetApp drivers need to check for existence of volume in backend if not found in cache to get supported with c-bak and so not mandate restarting c-bak after any volume create in c-vol.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/48015

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/48015
Committed: http://github.com/openstack/cinder/commit/8bfe919c71383f9641bea45b8504feb18172c8a5
Submitter: Jenkins
Branch: master

commit 8bfe919c71383f9641bea45b8504feb18172c8a5
Author: Navneet Singh <email address hidden>
Date: Fri Aug 2 03:21:26 2013 +0530

    Fix NetApp iscsi drivers for cinder backup

    It fixes the iscsi drivers to query backend
    if a lun entry is not found in the cache. Due
    to the c-bak feature spawning volume drivers
    separately than c-vol it caused NetApp drivers
    to error out if volume was created after starting
    c-bak. This patch fixes it.

    Change-Id: I3570e58560408d3f7117bb1068cf530ae05521b3
    Closes-Bug:#1229620