I converted a vmdk image file to qcow2 with qemu-img (on a ubuntu 14.04 server)
sudo qemu-img convert -f vmdk -O qcow2 Odoo-disk1.vmdk odoo-disk1.qcow2
now, the resulting qcow2 image is more then twice as big as the original.
$ ls -lh -rwxrwxrwx 1 root root 3.3G Nov 20 14:46 Odoo-disk1.vmdk -rwxrwxrwx 1 root root 7.4G Nov 21 14:35 odoo-disk1.qcow2
Not really sure what to think of this but I would be much more relaxed whether the files where similar in size. Is there any way to achieve that? I am not very experience with this matter, so any explanation why that just 'is like that' would also be helpful
I set up the VM using this qcow 2 image and after started it
virsh list --all shows the machine as 'running'.