if(packToOva) {
// Important! we need to sync file system before we can safely use tar to work around a linux kernal bug(or feature)
s_logger.info("Sync file system before we package OVA...");
Script commandSync = new Script(true, "sync", 0, s_logger);
commandSync.execute();
Script command = new Script(false, "tar", 0, s_logger);
command.setWorkDir(exportDir);
command.add("-cf", exportName + ".ova");
command.add(exportName + ".ovf"); // OVF file should be the first file in OVA archive