K 10 svn:author V 3 jhb K 8 svn:date V 27 2016-08-10T16:31:15.183287Z K 7 svn:log V 311 MFC 273102: Use '-e' to check if the virtio backing file has already been created. The '-f' check works fine on a regular file but not if the backing file is a device (e.g., /dev/md0). In this case it would print a misleading but otherwise benign message about the backing file not being present. PR: 210410 END