cinder lvm problems after patch is applied

With the following patch applied: https://github.com/openstack-dev/sandbox/blob/master/project_exercises_boston/cinder-lvm_log_message.patch a number of Cinder problems are encountered:

When executing 'tox -e py27,pep8' errors are encountered in both unit test and pep8 testing.

From a functional standpoint volumes go to an error state during creation. There have also been reports of lv's being created that are twice the size requested. The size reported by Cinder, however is correct.

These problem please need to be resolved.

Recreation of the problem can be done with the following steps:

1. git clone https://github.com/openstack-dev/sandbox to your home directory.
2. cp sandbox/project_exercises_boston/cinder-lvm_log_message.patch /opt/stack/cinder
3. cd /opt/stack/cinder
4. git apply cinder-lvm_log_message.patch
5. Execute unit test.
6. Restart the c-vol process in devstack and attempt to create a volume.