[CRIU] checkpoint failure in docker test

[Andrew Vagin]

On Tue, Jun 28, 2016 at 10:13:13PM +0000, Ross Boucher wrote:
> Andrew, did you have any other thoughts on this?

  > And I ran the exact same commands outside of docker-in-docker just fine,
  > so its AUFS docker-in-docker that isn't working I guess.

How is it critical for us to solve this issue? I am not a big fan of
aufs and overlayfs. Will this issue block a pull-request into Docker?

> 
> On Tue, Jun 28, 2016 at 9:49 AM Pavel Emelyanov <xemul at virtuozzo.com> wrote:
> 
>     On 06/23/2016 09:25 AM, Andrew Vagin wrote:
>     > On Thu, Jun 23, 2016 at 05:16:24AM +0000, Ross Boucher wrote:
>     >> Just updated and posted some comments to that thread.
>     >
>     > Thanks!
>     >
>     > Can you try to reproduce this problem with the devicemapper driver?
> 
>     Is it again overlayfs bug?
> 
>     > I think it will work.
>     >
>     > -- Andrew
>     >
>     >>
>     >> On Thu, Jun 23, 2016 at 1:12 AM Andrew Vagin <avagin at virtuozzo.com>
>     wrote:
>     >>
>     >>     On Wed, Jun 22, 2016 at 11:21:48PM +0000, Ross Boucher wrote:
>     >>     > I've got a checkpoint failure with the automated test I'm trying
>     to add
>     >>     to
>     >>     > docker. Here's the log:
>     >>     >
>     >>     > https://gist.github.com/boucher/d122da7fc9a93cfb8e6dbe1444791f5f
>     >>     >
>     >>     > From reading the log, it seems like an empty path is trying to be
>     >>     mounted? I'm
>     >>     > not sure where that might be coming from. It's probably worth
>     noting that
>     >>     this
>     >>     > is running docker in docker, but I know we've gotten that to work
>     in the
>     >>     past.
>     >>
>     >>     Which storage driver do you use here?
>     >>     Could you show output for "ls -l /proc/pid/fd /proc/pid/map_files"
>     >>     for the init process?
>     >>
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>