I am still a newbie and going through the ovirt "engine-setup"
And I am getting an error ---> AIO: Validating CPU Compatibility...  [ ERROR ]


oVirt Engine will be installed using the following configuration:
=================================================================
http-port: 80
https-port: 443
host-fqdn: ovirtmgr.localdomain
auth-pass: ********
org-name: home
default-dc-type: NFS
db-remote-install: local
db-local-pass: ********
nfs-mp: /mnt/iso
iso-domain-name: iso
override-iptables: no
config-allinone: yes
storage-path: /mnt/data
superuser-pass: ********
Proceed with the configuration listed above? (yes|no): yes

Installing:
AIO: Validating CPU Compatibility... [ ERROR ]
Error: Could not start libvirt service. Please try starting it manually and rerun the setup.
Please check log file /var/log/ovirt-engine/engine-setup_2015_02_24_23_49_33.log for more information

I examined the log " /var/log/ovirt-engine/engine-setup_2015_02_24_23_49_33.log":
It consists of the following info:

File "/usr/share/ovirt-engine/scripts/plugins/all_in_one_100.py", line 184, in startLibvirt
raise Exception(ERROR_LIBVIRT_START)
Exception: Error: Could not start libvirt service. Please try starting it manually and rerun the setup.

Please find the attached file "/usr/share/ovirt-engine/scripts/plugins/all_in_one_100.py"

Appreciate your help.