Fix: root fs with /dev/mapper

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4918 2b470e98-0d58-463d-a4d8-8e2adae1ed80
SYSMON

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4919 2b470e98-0d58-463d-a4d8-8e2adae1ed80