Recently I noticed some unused ext4 filesystems (i.e. filesystems that
aren't in /etc/fstab, that I normally don't mount, typically because
they're snapshots or backups) "magically" mounted as
`/media/root/<UUID>`.
This is on a headless ARM board running Debian stable.
Not sure when this happen, but I noticed t least once happening in
response to `vgchange -ay`.
Any idea who/what does that, and how/where I can control it?
Stefan