Bug description updated to highlight that you should be creating a Cinder volume from a RAW Glance image. If image in Glance is QCOW2 (which is the format Fuel uses for its CirrOS image), copy-on-write will still not happen.
Bug description updated to highlight that you should be creating a Cinder volume from a RAW Glance image. If image in Glance is QCOW2 (which is the format Fuel uses for its CirrOS image), copy-on-write will still not happen.