Comment 7 for bug 368425

This is an interesting suggestion, but I don't think we'll be implementing this. As psusi notes, there are ways you can tune your system to avoid fsck on boot; you can even bypass the fsck altogether from the boot splash screen. And it would be nearly impossible to ensure we get the correct sequencing on shutdown to be able to fsck after unmounting, the way we do at boot time, because the system has simply never been designed for this.

(Not to mention problems like trying to run an fsck when the system is shutting down because of a low battery / impending UPS failure / hardware overheating.)

So while I think it's a good idea /in principle/, I don't think we can actually deliver on this, and trying to do so would likely make the system more fragile for a long time.