[CRIU] Problem in Seizing Open File Descriptors?

[Pavel Emelyanov]

On 07/15/2014 06:34 PM, Saied Kazemi wrote:
> Thanks for the quick feedback.  I am using CRIU 1.3-rc2 (at commit e1b56c8fa) with Docker version
> 1.1.0 on Ubuntu 14.04 which does not provide mnt_id in /proc/pid/fdinfo/fd files.

That can be a problem.

> I will look into Docker source today.  Assuming that it does open /dev/null before moving into the 
> namespaces, can CRIU handle it?

It should, but without this field this would fail just the
way you observe with Docker :) If you could confirm that on
the kernel with mnt_id in fdinfo it works, that would be
great. Meanwhile, I will try to make a test for this.

Thanks,
Pavel