Virtual Machine from a Hard Disk Image with virt-install --import

This is one of many ways to create a virtual machine. This way starts with a hard disk image.

NAME=sles12sp2b4
IMG=https://example.com/images/SLE_12_SP2_Beta4-x86_64-default.qcow2
wget -O /var/lib/libvirt/images/$NAME $IMG
virt-install --name $NAME \
       --ram 2048 --graphics type=vnc \
       --network bridge=br0 \
       --import \
       --disk bus=virtio,path=/var/lib/libvirt/images/$NAME

For IMG I used a SUSE-internal server with SLEnkins images.
The tricky part is knowing the right value for the --disk bus setting. At first I used the default but the machine wouldn't boot because it would see /dev/sda instead of /dev/vda it was expecting.