nbdkit --filter=cow --filter=xz curl \
https://dl.fedoraproject.org/pub/alt/risc-v/
disk-images/fedora/rawhide/20190703.n.0/
- Developer/Fedora-Developer-Rawhide-20190703.n.0-sda.raw.xz
+ Developer/Fedora-Developer-Rawhide-20190703.n.0<b>-sda.raw.xz</b>
qemu-system-riscv64 \
-nographic \