See disk image information.
# qemu-img info lwa-flat.vmdk image: lwa-flat.vmdk file format: raw virtual size: 50G (53687091200 bytes) disk size: 50G
Convert the vmdk image to a qcow2 image.
# qemu-img convert -O qcow2 lwa-flat.vmdk lwa-flat.qcow2
Create a guest definition and start guest.
# virt-install --connect qemu:///system --import -n lwa \ --vcpus=1 --ram=2048 \ --disk path=/home/vm/fromvbox/lwa-flat.qcow2,device=disk,format=qcow2 \ --vnc --noautoconsole --os-type linux --description lwa \ --network=bridge:b0 --hvm
Migrate VMware or Virtualbox vmdk to KVM qcow2