Comment 7 for bug 1471098

Think this is a duplicate of https://bugs.launchpad.net/cinder/+bug/1489744 which a fix just landed in Cinder for.

I have not done anything to backport that bugfix - if we want I can propose that fix to the stable streams now.

Though look at the proposed Nova fix, since it has a hold of the BDM think this would work better with multiattach devices... so the other option would be reverting my patch and using this. Only strange part of doing it with proposed patch is the final attach/detach coming from Nova side half the time and Cinder side the other half.