The version of cinder and nova you're using, full logs, description of configuration or configuration files, especially what storage backend you're using and how it's configured would be most helpful. This exception you've posted may have very useful information above it, can you include the full log?
The version of cinder and nova you're using, full logs, description of configuration or configuration files, especially what storage backend you're using and how it's configured would be most helpful. This exception you've posted may have very useful information above it, can you include the full log?