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Sparse image:
qemu-img create -f qcow2 /var/lib/libvirt/images/test.qcow2 64G
Installation:
virt-install -r 4096 –accelerate -n testowy -f /var/lib/libvirt/images/test.qcow2 –cdrom /CentOS-6.5-x86_64-bin-DVD1.iso –network=type=direct,source=eth0 –graphics vnc,listen=0.0.0.0 –noautoconsole