mount: what is the point of 'nouser' on the command line?

[Benno Schulenberg <bensberg@justemail.net>]

Hi all,

The man page of mount(8) currently contains the following example
to show how the -o option can be used:

    mount LABEL=mydisk -o noatime,nouser

As the command does not contain a mountpoint, it requires an entry
in fstab in order to work.  If that entry does not contain the keyword
'user' in the options field, then the mount will effectively already be
'nouser'.  If it does contain the keyword 'user', does specifying 'nouser'
then somehow exclude other users?  As far as I can tell it doesn't.

So, is it ever useful to specify '-o nouser' on the command line?


Something else.  On the man page of umount, shouldn't it say that
the -O and -t options are only effective in combination with -a?

Further, mount recognizes the options -L and -U besides the keywords
LABEL= and UUID=, but umount only recognizes the latter two.  For
symmetry it would be nice if umount also recognized -L and -U.

Benno

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