Comment 1 for bug 1727257

Reviewed: https://review.openstack.org/516661
Committed: https://git.openstack.org/cgit/openstack/compute-hyperv/commit/?id=8e5937e66803b134b06f8c186e1682c7654502d5
Submitter: Zuul
Branch: master

commit 8e5937e66803b134b06f8c186e1682c7654502d5
Author: Alexandru Muresan <email address hidden>
Date: Tue Oct 31 11:49:27 2017 +0200

    Validate SAN policy when having passthrough disks

    One common cause for passthrough disk attachment issues is an
    incorrectly configured san policy. Having it set to 'online' will
    prevevent disks from being attached to VMs.

    This change allows the hyperv driver to check the san policy and
    log a warning message when the driver loads and when a passthrough
    disk is being attached.

    Depends-On: I25033c15b77f494a417c9cd01d194a8bfb3cfe13
    Change-Id: Ia123d98286fa99f45f91bfc47a4f0d468fa7d13e
    Closes-Bug: #1727257