Build from sources here: https://github.com/percona/flashcache the work carried out is mostly to ensure a working RPM pacakage,

aimed at el6 currently sysvinit is in use, as such whilst it does work with fedora it does not yet contain the appropriate systemctl compatibility

Please report any bugs after checking upstream here: https://github.com/facebook/flashcache for existing issues then email: oneiroi@fedoraproject.org / david.busby@percona.com