[CRIU] [PATCH] mnt: tune the root mount before mounting a root yard

[Cyrill Gorcunov]

On Thu, Jun 11, 2015 at 04:22:07PM +0300, Cyrill Gorcunov wrote:
> On Thu, Jun 11, 2015 at 03:40:37PM +0300, Andrey Vagin wrote:
> > Otherwise the root yard can be propagated into the host mount namespace
> > and remain there and criu will fail, because it will not be able to
> > remove the roots yard.
> > 
> > It occures if we give a shared mount as root to "criu restore" and
> > criu converts it into a slave mount.
> > 
> > Reported-by: Cyrill Gorcunov <gorcunov at openvz.org>
> > Cc: Cyrill Gorcunov <gorcunov at openvz.org>
> > Signed-off-by: Andrey Vagin <avagin at openvz.org>
> 
> Didn't help
> 
> (00.028112) Error (mount.c:874): Mount 122 ./var/tmp (master_id: 31 shared_id: 53) has unreachable sharing. Try --enable-external-masters.
> 
> try run criu with fedora 21 template and httpd running inside.

That fails on dump, not even restore :/ I fear something more complex here.