Thank you, but that does not answer my questions.
By filesystem, I mean ext2, ext3, XFS, reiserfs, or something like that.
the 'mount' command will give you more information about the filesystems.
When I asked how they are mounted, I meant which mount option did you use (see the mount command)
So, you log in to root on the console directly on the machine and you create a file on a local file system and it ends up with a weird user. Is that correct?