Zenoss 5 Installation Issue.

[root@localhost tmp]# ./core-autodeploy.sh
Autodeploy script 2016-03-02 for Control Center master host and Zenoss Core 5/Zenoss Resource Manager 5
Ultimate graph and dashboard solution for Zenoss 5 / Grafana 2 for Zenoss 5 - http://bit.ly/zenoss5grafana
Install guide: https://www.zenoss.com/resources/documentationfield_zsd_core_value_selective=Core&field_product_value_selective=All&field_version_sort_tid_selective=All
You should to read 'How to install Zenoss 5 successfuly' first - http://bit.ly/zenoss5. OK (y/n) This autodeploy script was not tested/prepared for current Zenoss version 5.1.x. Do you really want to continue (y/n)y
CentOS Linux release 7.2.1511 (Core)
Hardware Requirements:
Min number of available CPUs: 4
Min size of available RAM: 20GB
These filesystems must be mounted with correct type and size:
Path Type Min size
/ xfs 30GB
/var/lib/docker xfs 30GB
/opt/serviced/var xfs 30GB
/opt/serviced/var/volumes btrfs 1GB
/opt/serviced/var/backups xfs 1GB
1 Checks - (Tue, 22 Mar 2016 13:10:48 +0100)
1.1 Root permission check
Done
1.2 Architecture check
Done
1.4 CPU check
Done
1.5 RAM check
Only 7GB of RAM has been detected, but at least 20GB is recommended. Do you want to continue (y/n) y
Done
1.6 Filesystem configuration check
/ filesystem check in progress...OK
/var/lib/docker filesystem check in progress...OK
/opt/serviced/var filesystem check in progress...OK
/opt/serviced/var/volumes filesystem check in progress...
xfs /opt/serviced/var/volumes filesystem detected, but btrfs is required. Do you want to continue (y/n)