The gui seems to say that Atime is on, but the cli seems to write that atime is off. What is it? I want it off for the zvol as it has virtual machines on it. I also don't see a setting in the Gui to turn atime off.
atime doesn't apply to zvols - the fact that it's showing "ON" in the UI might just be a visual oddity/bug, where it thinks "no value" means "inherit from parent" and either your pool or parent dataset has it ON.