Comment 3 for bug 1659539

Reviewed: https://review.fuel-infra.org/30121
Submitter: Pkgs Jenkins <email address hidden>
Branch: openstack-ci/fuel-8.0/liberty

Commit: 0a303ddb9a70c79f8998b6c5a7d5fb3291d5136d
Author: Timofey Durakov <email address hidden>
Date: Thu Jan 26 12:26:23 2017

fix for disk-allocation ratio during block-migration

for the block-migration cases nova does extra check on
compute node to honor disk_over_commit api parameter,
which lead compute to do this check without taking into
account disk_allocation_ratio config option. This leads
nova to report, that there are no disk space on destination
node

This patch introduce new check on conductor side for the case,
when operator passed target host over api, and make check on
compute side optional, depending on disk_over_commit parameter

Closes-bug: #1659539

Change-Id: I430ca07586343dc71aef7fe9e440f21fc8923d4a