Comment 2 for bug 1497413

Reviewed: https://review.openstack.org/225982
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=8e69447d7b9efc23a0695edbbb55bfbd845a99d8
Submitter: Jenkins
Branch: master

commit 8e69447d7b9efc23a0695edbbb55bfbd845a99d8
Author: Eric Harney <email address hidden>
Date: Mon Sep 21 14:29:19 2015 -0400

    Allow c-vol backends to start when some backends fail to load

    Currently, if a c-vol backend fails to load due to an error in
    the module startup process (like a volume driver's __init__ or
    dependency import failure), the c-vol process halts completely.

    Instead, catch that backend failure, log it, and allow other
    backends in enabled_backends to still start up and run.

    Note that this is not applicable for failures that allow
    drivers to load and remain "uninitialized" -- this is for
    failures that occur prior to that point.

    Closes-Bug: #1497413

    Change-Id: If183b9e3d21777cddf713c2dc88dc80ae7cfe01d