[PATCH v3 0/7] User namespace mount updates

[Richard Weinberger]

On Wed, Nov 18, 2015 at 4:13 PM, Al Viro <viro at zeniv.linux.org.uk> wrote:
> On Wed, Nov 18, 2015 at 09:05:12AM -0600, Seth Forshee wrote:
>
>> Yes, the host admin. I'm not talking about trusting the admin inside the
>> container at all.
>
> Then why not have the same host admin just plain mount it when setting the
> container up and be done with that?  From the host namespace, before spawning
> the docker instance or whatever framework you are using.  IDGI...

Because hosting companies sell containers as "full virtual machines"
and customers expect to be able mount stuff like disk images they upload.

-- 
Thanks,
//richard