# probe filesystem metadata of disks
KERNEL!="sr*", IMPORT{program}="/sbin/blkid -o udev -p $tempnode"
-# watch for future changes
+# enable in-kernel media-presence polling
+SUBSYSTEM=="module", KERNEL=="block", ATTR{parameters/events_dfl_poll_msecs}="2000"
+
+# watch metadata changes by tools closing the device after writing
KERNEL!="sr*", OPTIONS+="watch"
# by-label/by-uuid links (filesystem metadata)