I wanted to bring this to the attention of the operators mailing list in case someone is relying on the cinder.cross_az_attach. There is a -dev thread here [1] that started this discussion. That led to a change proposed to deprecate the cinder.cross_az_attach option in nova [2]. This is for deprecation in mitaka and removal in N. If this affects you, please speak up in the mailing list or in the review. [1] http://lists.openstack.org/pipermail/openstack-dev/2015-September/075264.html [2] https://review.openstack.org/#/c/226977/ -- Thanks, Matt Riedemann