Are your database migrations up to date ?
The image_ref column was added in migration 21.
try doing a 'nova-manage db sync' to upgrade the db schema and see if the problem goes away ... if you get any output from the command, the database was out of date.
Are your database migrations up to date ?
The image_ref column was added in migration 21.
try doing a 'nova-manage db sync' to upgrade the db schema and see if the problem goes away ... if you get any output from the command, the database was out of date.