# File lib/fog/compute/openstack/requests/attach_volume.rb, line 5
        def attach_volume(volume_id, server_id, device)
          data = {
            'volumeAttachment' => {
              'volumeId' => volume_id.to_s,
              'device'   => device
            }
          }
          request(
            :body    => Fog::JSON.encode(data),
            :expects => [200, 202],
            :method  => 'POST',
            :path    => "servers/%s/os-volume_attachments" % [server_id]
          )
        end