Ieb9a03d308495be4e8c54b5c6c0ff781ea7f0559 introduced support for using
QEMU's native iSCSI initiator support way back in Kilo. However this was
only enabled when the LibvirtNetVolumeDriver class was configured as the
``iscsi`` volume driver via the ``[libvirt]/volume_drivers`` configurable.
Unfortunately this configurable was removed in Liberty by
I832820499ec3304132379ad9b9d1ee92c5a75b61 essentially rendering this
``iscsi`` based code path dead ever since unless operators manually
hacked the now static ``libvirt_volume_drivers`` list within driver.py.
As a result of this and a complete lack of any test coverage in the gate
we can now remove this unreachable code from Nova. It might be desirable
to reintroduce this support later but this should take the form of an
extracted volume driver and a new configurable within nova.conf to
switch between the two available drivers.
Closes-Bug: #1501447
Change-Id: I1043287fe8063c4b2af07c997a931a7097518ca9
Lee Yarwood
b8c55d1d3c