kvm qcow2 resize

qemu-img resize vm.qcow2 +20GB apt-get install libquestfs-tools or apt-get install ./libguestfs-tools_1.32.2-4ubuntu2_amd64.deb cp vm.qcow2 vm.qcow2.org virt-resize --expand /dev/sda1 vm.qcow2.org vm.qcow2.qcow2 virt-filesystems --long -h --all -a vm.qcow2.qcow2