Stopping at the block later sadly doesn’t answer much these days. Is it hitting a software ftl? Firmware? Is there caching? Is the ftl journaled/logged/whatever

Stopping at the block later sadly doesn’t answer much these days. Is it hitting a software ftl? Firmware? Is there caching? Is the ftl journaled/logged/whatever? Ideally we need a barrier command that goes all the way down. What I’d love to see is a top to bottom barrier available for user space but flushing be a privileged operation that requires explicit grants (you’d give this to db’s maybe, but not to browsers, for example)