Checkmk Werk 15867: df: No longer crash if volume name is shown on a cluster

ID: 15867 Title: df: No longer crash if volume name is shown on a cluster Component: Checks & agents Level: 1 Class: Bug fix Version: 2.1.0p31 The check plugin <i>"Used Space and Inodes in Filesystems"</i> (<tt>df</tt>) crashed if the option <i>"Show volume name in service output"</i> was configured for clustered services.