Comment 2 for bug 1244831

As chenhaiq noted, the cinder creation API call is asynchronous and we don't get an error message back if something goes wrong. There's a blueprint about it on the Cinder side but it's a bit vague and doesn't seem to have generated much interest so far.

https://blueprints.launchpad.net/cinder/+spec/return-error-messages-to-horizon