Cloud Image - image convert from vmdk to qcow2

we can convert the VMware vmdk cloud image to KVM based qcow2 image with following command on OpenStack qemu.
The option of "-o compat" is for compatibility of low version.

[Convert Image]

qemu-img convert -o compat=0.10 -f vmdk -O qcow2 CentOS_Cloud-disk1.vmdk centos-cloud-6.5.qcow2

[Compress Image]
sudo virt-sparsify -o compat=0.10 --compress vCDN_DnsTld-disk1.qcow2 vCDN_DnsTld-disk1_compressed.qcow2