[CRIU] procfs reports unexpected mnt_id and path for overlayfs files

[Miklos Szeredi]

On Mon, Jul 6, 2015 at 7:45 PM, Saied Kazemi <saied at google.com> wrote:
> On Wed, Apr 15, 2015 at 8:07 AM, Miklos Szeredi <miklos at szeredi.hu> wrote:
>> On Wed, Apr 15, 2015 at 10:50 AM, Andrew Vagin <avagin at odin.com> wrote:
>>> Hello Miklos and Everyone else,
>>>
>>> We have a report that a container with overlayfs can't be checkpointed.
>>>
>>> To dump file descriptors we get information from /proc/pid/fd/ and /proc/pid/fdinfo.
>>>
>>> But in case of overlayfs we see unexpected values there.
>>>
>>> /proc/PID/fdinfo/FD contains mnt_id which isn't presented in /proc/pid/mountinfo.
>>> /proc/PID/fd/FD does not contain an absolute path to the opened file.
>>>
>>> Can someone help to fix these issues?
>>
>> See this:
>>
>> https://lkml.org/lkml/2015/3/20/372
>>
>> Al didn't like that patch.  But it definitely will be fixed, one way
>> or the other, in the near future.

Should be fixed in 4.2.

Thanks,
Miklos