[libvirt-users] Migration between 2 hosts

Hi , How does migration of VMs between 2 hosts work ? Say we want to migrate a VM from host A - > B , does it create a process on B, copy all the data of the process on A to B and then once done kill process on A. Is it how it happens ? Can someone tell me how the copying of data between process on A and new process on B is done ? Regards, Navin