Translations:ReleaseNotes/Kilo/138/en

• Change https://review.openstack.org/#/c/97946/ adds database migration 267 which scans for null instances.uuid records and will fail if any are found since the migrate ultimately needs to make instances.uuid non-nullable and adds a UniqueConstraint on that column. A helper script is provided to search for null instances.uuid records before running the database migrations. Before running 'nova-manage db sync', run the helper script 'nova-manage db null_instance_uuid_scan' which, by default, will just search and dump results, it does not change anything. Pass the --delete option to the null_instance_uuid_scan command to automatically remove any null records were instances.uuid is null.