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> Our preliminary testing with a raw image with container_format ==
> compressed, disk_format == raw is that Nova boots a VM from the image
> but the VM appears to be unusable.  Nova seems taking it as a real RAW
> image as disk_format indicates.

It looks like [3] has been introduced to fail the instance creation,
which seems like a legit first step.

> So we want to open a discussion about handling this.

Is there a sense of what it would take for nova to support compressed
images? We're past spec freeze, but if the impact is small...

efried

[3] https://review.opendev.org/#/c/673407/