Comment 16 for bug 1639239

Reviewed: https://review.openstack.org/436868
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=ec3f15994476cf36e0ab34c0d3145102e61fece9
Submitter: Jenkins
Branch: stable/newton

commit ec3f15994476cf36e0ab34c0d3145102e61fece9
Author: Arne Recknagel <email address hidden>
Date: Tue Feb 21 16:56:53 2017 +0100

    Fix s390 "connector not found" issue

    This patch introduces a try-catch block on a call to the os-brick
    library which may throw a ValueError. os_brick will throw it when
    a driver is not supported, so ignoring it and skipping its addition
    to the driver list should be the expected behavior. This fix is
    required for s390, where nova is currently broken without it.

    The issue was resolved in Ocata with changes including [1] and [2],
    as well as a change to os_brick [3]. The backport to newton [4] was
    abandoned as it requires a raise in the os_brick minimum version.
    This fix is a revision of [5], which is essentially a lightweight
    version of [1] that only addresses the issue at hand.

    [1]: https://review.openstack.org/#/c/395067/
    [2]: https://review.openstack.org/#/c/394979/
    [3]: https://review.openstack.org/#/c/375415/
    [4]: https://review.openstack.org/#/c/428386/
    [5]: https://review.openstack.org/#/c/394425/

    Change-Id: I638f12ce3deab0338a8d2652398c35acb9280f72
    Closes-Bug: 1639239