In an ideal world we'd unmount the root dir on shutdown instead of just remounting it r/o, by means of pivot_root(). The kernel currently doesn't allow us to do this properly, since the root dir stays pinned even after the pivot_root(). This is just a tracker bug, so that we keep in mind that we'd love to do this properly one day, when the kernel is nicer to us.
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
Now year has passed any changes been made to satisfy this? Btw you probably should just move this to TODO list and close this RFE...
This is actually implemented since a while for F17. Closing.