linux-kernel - Re: Bind mount bug?

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Date:	Sun, 11 Nov 2007 23:40:44 +0100
From:	Frans Pop <elendil@...net.nl>
To:	Roland Kuhn <rkuhn@....physik.tu-muenchen.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Bind mount bug?

On Sunday 11 November 2007, Roland Kuhn wrote:
> This mounts the bindtest/ tree on test/ _without_ copying the mount
> points which are found on subtrees.

Right. I guess this is the key point that tripped me up.

> So, you see, test/test/test/a was (as it should) physically created  
> in test/test, where it is shadowed by the bind mount as long as that  
> is not removed.

Which means that to continue the example from my follw-up mail:

> # ls bindtest/test
> foo
> # umount test
> # ls test
> foo
# umount bindtest/test
# ls bindtest/test
baz

And there indeed is the missing file.

> Nothing vanishes into "thin air" ;-)

Yeah, I saw that syntax error after sending the mail "into space" would have 
been OK too, but not my combining the two :-)

Thanks for the explanation!

Cheers,
FJP
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