Comment 53 for bug 1350504

@Tristan:

Here's a trace, showing up why that is required:
http://paste.openstack.org/show/117171/

The idea is that the methods from the base class will now pass one extra argument, namely volume_name, and even if that method ignores it (because of the reasons I've mentioned earlier), it must accept it, otherwise that will raise the exception from the above trace.

As I've said, it's just a one liner but keeps the driver from breaking after this security fix is applied.