X file #88
On can create a file name X in the directory of the root file system where
is supposed to be mounted a device. If the storio can see a file named X,
it knows that the device is not mounted and so considers the device as failed.
dangerous use of "fatal()" #85
Log priority of fatal() has been lowered from LOG_EMERG to LOG_ERR.
The application now crashes setting a log tagged fatal in the syslog
but no messages is sent to the terminals.