Goutham Pacha Ravi 83a849a78c NetApp ONTAP: Fix reporting of provisioned_capacity_gb ...

The ONTAP drivers in Cinder ("7mode" and "cmode") cannot
reliably and efficiently track provisioned_capacity_gb as expected
by the Cinder scheduler.

The driver authors originally assumed that provisioned_capacity_gb
is consumed space on the backend. This results in miscalculation of
over subscription in the Cinder scheduler.

The fix adopted here is to remove this wrong reporting and rely on
calculation of the provisioned_capacity_gb in the scheduler.

Change-Id: Ic106dbcae8ceaac265b710756ab1874e445ca826
Closes-Bug: #1714209
(cherry picked from commit 42b8b7fe60)
(cherry picked from commit 558571b44d)
Conflicts:
	cinder/tests/unit/volume/drivers/netapp/dataontap/test_nfs_7mode.py

2018-04-11 14:43:18 -05:00

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