Почитал, изменил параметр в smb.service.
Все равно ошибка, теперь другая, хотя самба вроде и запустилась.
[root@server5 ~]# rpm -q samba
samba-4.1.22-alt0.M70P.1
[root@server5 ~]# service smb start
Warning: Unit file of smb.service changed on disk, 'systemctl --system daemon-reload' recommended.
Job for smb.service failed. See 'systemctl status smb.service' and 'journalctl -xn' for details.
[root@server5 ~]# systemctl --system daemon-reload
[root@server5 ~]# service smb start
[root@server5 ~]# systemctl status smb.service
smb.service - Samba SMB Daemon
Loaded: loaded (/lib/systemd/system/smb.service; enabled)
Active: failed (Result: exit-code) since Чт 2015-12-24 18:46:12 MSK; 12s ago
Process: 30619 ExecStart=/usr/sbin/smbd $SMBDOPTIONS (code=exited, status=0/SUCCESS)
Main PID: 30620 (code=exited, status=1/FAILURE)
CGroup: name=systemd:/system/smb.service
дек 24 18:46:12 server5.localdomain systemd[1]: Starting Samba SMB Daemon...
дек 24 18:46:12 server5.localdomain systemd[1]: Started Samba SMB Daemon.
дек 24 18:46:12 server5.localdomain systemd[1]: smb.service: main process exited, code=exited, status=1/FAILURE
дек 24 18:46:12 server5.localdomain systemd[1]: Unit smb.service entered failed state
[root@server5 ~]#