Hello,
I figure out what is problems. In my case, I set EC2 instance type to "r5.xlarge".
But, I don't know "r5" instance is some different another general instances types in AWS. It means that "r5" is "Nitro" system which for high performance usecase. It also uses "nvme type EBS volumes".
So, AWS assigns different name in r5 instances which start with "nmve~", but "neo4j enterprise causal cluster" cloudformation hardcoded only "sda / xvdb".
I think neo4j should modify their offical cloudforamtion template, remove "r5" instance in "mapping" field OR set other "userdata" scripts , if user selects "r5" instances to support "nvme volumes"
Anyway, I can find problems, and I switched EC2 types to "r4" from "r5".
I hope that this post some helpful to others.
Thanks.