Libvirt/KVM snapshot only in RAW image format ?
When I create an image from a running instance with the Libvirt driver, nova-compute create a copy of the QCOW2 running image in RAW image format. Why it converts the QCOW2 image to RAW image ?
I try to change the qemu-img convert command (in method 'snapshot' of class 'LibvirtConnection') to create snapshot in QCOW2 format. The image is correctly created but nova fails to boot the new image. I can see in nova-compute logs a warning about it cannot inject key into image. I check if I can manually boot with KVM this image and it works nicely.