according to https://bugs.launchpad.net/ubuntu/+source/ubuntu-vm-builder/+bug/278221/comments/2 modprobing dm-loop fixes this. Maybe devmapper should do this?
according to https:/ /bugs.launchpad .net/ubuntu/ +source/ ubuntu- vm-builder/ +bug/278221/ comments/ 2
modprobing dm-loop fixes this. Maybe devmapper should do this?