In Capacity and Utilization data for Virtual Machine, Disk I/O (KBps) graphs appears blank.
Issue
- In Capacity and Utilization data for Virtual Machine, Disk I/O (KBps) graphs appear blank.
- Blank or empty Disk I/O graphs in the C&U Monitoring menu in the CloudForms web portal.

Environment
- Red Hat CloudForms 3.1
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