The issue has been solved.
The solution of waiting for QEMU to load the base image passed as
argument, then create the overlay with `qmp_blockdev_snapshot_sync`
didn't work.
Instead, we first create a new overlay with `bdrv_image_create`, with
backing file the original base image passed as
Dear QEMU maintainers,
For reference, I am using QEMU 8.0.0, and running with softmmu-aarch64.
I have been trying implement a feature that directly creates an overlay
with the goal of booting multiple instances from the same base image.
Creating a backing file with `qemu-img` does work, but
