Volume transfer functionality is broken by microversion 3.55 introducing multiple issues

[Jay Bryant]

It was first discovered last night that the master level of devstack (rocky) is unable to list volumes in Horizon. It just reports an error and no data is displayed. The Horizon logs show:

WARNING horizon.exceptions Recoverable error: API version '3.0' is not supported on 'cinderclient.v3.volume_transfers.list' method.

Others noticed that OSC functional tests were failing when trying to create a transfer:

openstack --os-volume-api-version 3 volume transfer request create -f json 91b3cac4a12f46fabe450b7f0b1d57e6 --name d605ccafffda4b0a88db50e509d2e675
API version '3.0' is not supported on 'cinderclient.v3.volume_transfers.create' method.

Upon investigation it appears that the change to implement transferring snapshots with volumes was improperly implemented. It wrapped all volume transfer functions with Micro Version 3.55 instead of just the added functionality. The change is here: https://github.com/openstack/python-cinderclient/commit/a554faa6530fa0bb70430572869a6a2555783912

We need to only wrap handling the change that allows volume transfers with the MicroVersion check.

[Sean McGinnis (sean-mcginnis)]

https://review.openstack.org/587601

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/python-cinderclient 4.0.1 release.