We can set a directory for log and image files.
crtools sets it as a current directory and then creates all files in it.
It works before we don't decide to change a mount name space.

I suggest to open a log dir and create files for help openat.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>