My variant of fix for/etc.defaults/syslog-ng/patterndb.d/scemd.conf Works fine at Microserver N54L, DSM 6.2.3-25426 Update 2 # begin scemd.conf patch to suppress ioctl messages filter f_scemd_ioctl { program(scemd) and match("polling_.*ioctl\ device\ failed$" value("MESSAGE")); }; #log with no destination and final flag = discard log { source(src); filter(f_scemd_ioctl); flags(final); }; # end scemd.conf patch filter f_scemd { program(scemd); }; filter f_scemd_sev { level(err..emerg) }