# File lib/fog/openstack/requests/compute/attach_volume.rb, line 6
        def attach_volume(volume_id, server_id, device)
          data = {
            'volumeAttachment' => {
              'volumeId' => volume_id.to_s,
              'device'   => device
            }
          }
          request(
            :body     => MultiJson.encode(data),
            :expects  => [200, 202],
            :method   => 'POST',
            :path     => "servers/%s/os-volume_attachments" % [server_id]
          )
        end