modprobe nbd max_part=8
 qemu-nbd --connect=/dev/nbd0 /home/images/leaf1-host.img
 fdisk /dev/nbd0 -l
 cryptsetup luksOpen /dev/nbd0p4 rhcos456
 mount /dev/mapper/rhcos456 /mnt/rhcos/

umount /mnt/rhcos/
cryptsetup luksClose /dev/nbd0p4
qemu-nbd --disconnect /dev/nbd0
rmmod nbd