Hmm, it does look like it, although one could carefully use large IO.
But the bigger issue might be durability. Most EBS types have rather low quoted durability, and, for a shared volume like this, that’s a problem. Using S3 instead would be better all around except for the smallish engineering effort and deployment effort needed.
Getting a tool like mkosi to generate a boot-from-S3 setup should be straightforward. Converting most any bootable container should also be doable, even automatically. Converting an AMI would involve more heuristics and be more fragile, but it ought to work reliably with most modern Linux distros.
