Comment 5 for bug 1398999

I'd still be hesitant about that since Berrangé addressed that in his post to the ML: "Even that distinction [sharable vs. exclusive] is somewhat dubious and so not reliably what you would want."

I really think that at this point the important thing is to ensure that we don't copy volumes onto themselves over the network. Once we've removed the opportunity for extremely slow data corruption, then we can consider optional/possible ways to handle live migrations with volumes attached. But I think that we can demonstrate that, for now at least, the only solution that will work for everyone using libvirt is to disable these live migrations entirely.