---
issues:
  - When running Nova Compute and Cinder Volume or Backup services on the same
    host they must use a shared lock directory to avoid rare race conditions
    that can cause volume operation failures (primarily attach/detach of
    volumes). This is done by setting the ``lock_path`` to the same directory
    in the ``oslo_concurrency`` section of nova.conf and cinder.conf. This issue
    affects all previous releases utilizing os-brick and shared operations
    on hosts between Nova Compute and Cinder data services.