RPM's postin script only starts and enables systemd service if migrated-from-my.cnf-settings.conf does not already exist

if [ -f /usr/lib/systemd/system/mariadb.service -a -x /usr/bin/systemctl ]; then

  systemd_conf=/etc/systemd/system/mariadb.service.d/migrated-from-my.cnf-settings.conf

  if [ -x %{_bindir}/mariadb-service-convert -a ! -f "${systemd_conf}" ]; then

    # Either fresh install or upgrade non-systemd -> systemd

    mkdir -p /etc/systemd/system/mariadb.service.d

    %{_bindir}/mariadb-service-convert > "${systemd_conf}"

    # Make sure old possibly non-systemd instance is down

    if [ $1 = 2 ]; then

      SYSTEMCTL_SKIP_REDIRECT=1 %{_sysconfdir}/init.d/mysql stop >/dev/null 2>&1 || :

      systemctl start mariadb >/dev/null 2>&1 || :

    fi

    systemctl enable mariadb.service >/dev/null 2>&1 || :

  fi

fi