The QCOW2 format is documented here: https://git.qemu.org/?p=qemu.git;a=blob;f=docs/interop/qcow2.txt;hb=HEAD The only difference between v2 and v3 is the addition of some extra fields into the header in v3 for which there are default values in v2. This introduces a new unit test for the behaviour but it has been manually verified by the converting the image from v3 to v2 with a command like: qemu-img convert -O qcow2 -o compat=0.10 clear-29620-cloud.img clear-29620-cloud.img.v2 Signed-off-by: Rob Bradford <robert.bradford@intel.com> |
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