[root@NoiseAsus1225B ~]# service libvirt status
Redirecting to /bin/systemctl status  libvirt.service
libvirt.service
   Loaded: not-found (Reason: No such file or directory)
   Active: inactive (dead)

[root@NoiseAsus1225B ~]# ps ax | grep libvirt
 1303 ?        Ssl    0:09 /usr/sbin/libvirtd --listen
 4507 pts/0    S+     0:00 grep --color=auto libvirt