public function executeGraphDiskRWPNG(sfWebRequest $request)
{
$etva_lv = EtvaLogicalvolumePeer::retrieveByPK($request->getParameter('id'));
$etva_server = $etva_lv->getEtvaServer();
$etva_node = $etva_server->getEtvaNode();
$graph_start = $request->getParameter('graph_start');
$graph_end = $request->getParameter('graph_end');
$disk_rra = new ServerDisk_rwRRA($etva_node->getUuid(), $etva_server->getUuid(), $etva_lv->getLv());
$title = sprintf("%s :: %s", $etva_server->getName(), $etva_lv->getLv());
$this->getResponse()->setContentType('image/png');
$this->getResponse()->setHttpHeader('Content-Type', 'image/png', TRUE);
$this->getResponse()->sendHttpHeaders();
$this->getResponse()->setContent(print $disk_rra->getGraphImg($title, $graph_start, $graph_end));
return sfView::HEADER_ONLY;
}
