# File lib/fog/rackspace/requests/compute_v2/attach_volume.rb, line 5
        def attach_volume(server_id, volume_id, device)
          data = {
            'volumeAttachment' => {
              'volumeId' => volume_id
            }
          }

          data['volumeAttachment']['device'] = device if device
          
          request(
            :body => Fog::JSON.encode(data),
            :expects => [200],
            :method => 'POST',
            :path => "servers/#{server_id}/os-volume_attachments"
          )
        end