There is a hard coded warning which says safety not guaranteed after 8GB. I have tried increasing this after a database has become full and it didn’t start. It’s definitely not a recovery strategy for a full etcd by itself, maybe as part of a way to eek out a little larger margin of safety.
This warning seems to be outdated. We had run etcd at much larger volumes without issues (at least without issues related to its size). Alibaba has been running 100G etcd clusters for a while now, probably others too
