Comment 2 for bug 1220459

Reviewed: https://review.openstack.org/52557
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=9adba6727bbec051c1437ee95367ecb97b207f35
Submitter: Jenkins
Branch: master

commit 9adba6727bbec051c1437ee95367ecb97b207f35
Author: Sabari Kumar Murugesan <email address hidden>
Date: Thu Oct 17 16:53:29 2013 -0700

    VMware Driver update correct disk usage stat

    The nodes managed by VMware VCDriver driver can have multiple
    datastores (disk abstraction) attached to it. The driver currently
    reports the disk usage of a datastore that has the largest capacity.
    But it doesn't report a consolidated disk usage. As a result, the
    node's storage capability is under-reported in many occassions.

    This patch fixes this issue by aggregating the disk freespace,
    capacity from all attached datastores.

    Closes-Bug: #1220459

    Change-Id: I818a041f33a045773fc799de2c69628064ef8cbf