On Fri, Aug 09, 2019 at 11:29:17AM -0500, David Wright wrote: > Whether I like the ability to mount in this manner, I'm with Greg at the > moment. Obviously I missed any discussion on the topic ~15 years ago, > so I haven't seen any benefits spelled out. In any case, perhaps a > warning in kern.log rather than total silence?
The disappearance of one of the mounts from "df" output also tells me that, if nothing else, "df" is not prepared to handle this situation. I wonder what other userspace commands might be making assumptions about things that are no longer true. I also wonder whether this is a bug in df.