[klibc] [PATCH 6/8] switch_root: Fix single file mounts

[Peter Jones]

On 07/29/2011 12:27 PM, H. Peter Anvin wrote:
> On 07/29/2011 06:40 AM, Michal Suchanek wrote:
>> union squashfs content and tmpfs over new_root using aufs, unionmount or
>> whatever els
> 
> This appears to be the key part of this usecase.  The various union
> mounting bits didn't exist when this code was written.
> 
> In *this particular* use case, the correct semantics is to leave the
> mount alone, together with any directory needed as scaffolding.  This is
> somewhat noteworthy that some other use cases which have been proposed
> have different requirements.
> 
> I would prefer this to bee an option, e.g. --keep-mounts, but perhaps
> that's overkill?

Wouldn't it make more sense to simply check if it's a union mount and then
ignore it?  Makes the cascade back up the directory tree a little more complex,
but it's not the worst thing ever.

-- 
        Peter