[[!comment format=mdwn username="david" avatar="http://cdn.libravatar.org/avatar/22c2d800db6a7699139df604a67cb221" subject="qcow and raw imgs" date="2018-10-13T23:48:46Z" content=""" Maybe this is obvious, but it's cheap to generate a qcow image \"backed\" by an existing raw image To quote from a script I have lying around to let a non-root user boot a root owned, read-only image [[!format txt \"\"\" qemu-img create -b /srv/vm/$vm.img -f qcow2 $img \"\"\"]] """]]