Hi, Here's my case : I'm trying to create Syslog Server Configuration, based on CentOS. Server must : -- Receive log from tcp -- store log into a NFS Volume automaticaly mounted by fstab on server startup ---- in case of fail of the NFS Volume, create a buffer on local disk. Here's my configuration : <Extension _syslog> Module xm_syslog </Extension> <Extension _xm_file> Module xm_fileop </Extension> <Input in> Module im_tcp Host 0.0.0.0 Port 39458 <Exec> $SERVER = hostname(); parse_syslog_ietf(); $DATE = strftime($EventTime, "%Y%m%d"); </Exec> </Input> <Processor buffer> Module pm_buffer maxSize 204800 Type Disk Directory %LOGDIR% WarnLimit 190000 </Processor> <Processor blocker> Module pm_blocker <Exec> $CHEMIN = "/var/partage/"+$SERVER; $test = dir_exists($CHEMIN); if $test == TRUE { blocker->block(FALSE); } else blocker->block(TRUE); </Exec> </Processor> <Output out> Module om_file File "/var/partage/"+$SERVER+"/"+$Hostname+"/"+$DATE+"_"+$Hostname+".log" CreateDir TRUE Exec to_syslog_ietf(); </Output> <Route tcp_to_file> Path in => buffer => blocker => out </Route> My Problem : When NFS Volume is down, pm_blocker write " can't check condition "dir_exists(<Path>)" : input/outpur Error" When i try without pm_blocker, om_file fails with same error and no buffer created.... Question : What is the best solution to implement a disk buffer system for om_file module ? How can i catch NFS volume exceptions ? Thanks in advance, best regards, Julien