> (contrived example with made-up mount option --overlay)
>
> mkdir a
> echo "a/x" > a/x
> echo "a/y" > a/y
> echo "a/z" > a/z
>
> mkdir b
> echo "b/y" > b/y
>
> mkdir c
> echo "c/z" > c/z
>
> mkdir d
> mount --bind a d
> mount --bind --overlay b d
> mount --bind --overlay c d
>
> cat d/x
> "a/x"
>
> cat d/y
> "b/y"
>
> cat d/z
> "c/z"
BSD has a mount_union command which does this, as well as mount_null,
which allows you to effectively mount a filesystem more than once.
I'm not sure how well it works, though, it might only work on some
filesystems.
John.
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This archive was generated by hypermail 2b29 : Sun Dec 15 2002 - 22:00:30 EST