How does nova determine the name of the backing file in Red Hat OpenStack Platform?

Solution In Progress - Updated 2017-02-04T00:52:46+00:00 -

Issue

How does nova determine the name of the backing file in /var/lib/nova/instances/_base in Red Hat OpenStack Platform?

Red Hat Enterprise Linux OpenStack Platform 7
Red Hat OpenStack Platform 8
Red Hat OpenStack Platform 9
Red Hat OpenStack Platform 10

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