For affected sysadmins, that are having a hard time, while the PR is not merged and integrated in a release, one possible workaround is to replace rbd.py with the one in the PR and restart cinder_volume.
For affected sysadmins, that are having a hard time, while the PR is not merged and integrated in a release, one possible workaround is to replace rbd.py with the one in the PR and restart cinder_volume.