i have one parimary ,two standby. one standby using stream replication connect to primary.another standby using basebackup,then recovery database --cp archivelog from primary using crontab.i want to delete old archivelog from standby.but configure pg_archivecleanup don't work,meantime no error in postgresql log.postgresql version is 9.1.2. the following is my recovery.conf : This is my recovery.conf: