We've just upgraded our Foreman installation to 1.8.2 and found that our Openstack provisioning stopped working. We've narrowed the issue down to the new Openstack boot from volume code (see http://projects.theforeman.org/issues/4521).

It seems that even if the "Boot from volume" button is unchecked, Foreman still fires the boot_from_volume function in /usr/share/foreman/app/models/compute_resources/foreman/model/openstack.rb. In our infrastructure this broke our provisioning as we don't use Ceph/block device volumes on Openstack.

On line 76 of openstack.rb:

    def create_vm(args = {})
      boot_from_volume(args) if args[:boot_from_volume]
....

When I create a new Openstack VM, boot_from_volume always gets called, even though I can see '"boot_from_volume"=>"false"' in the Foreman logs for the new host.