[CRIU] Network file systems migration: dump problems

[Pavel Emelyanov]

On 01/26/2016 09:45 PM, Andrew Vagin wrote:
> On Fri, Jan 22, 2016 at 12:03:31PM +0100, Stanislav Kinsburskiу wrote:
>> Good day,
>>
>> NFS migration revealed a significant problem on dump stage: CRIU "stops" network, and then tries to access files on NFS, which expectedly leads to hung.
>> I would like to ask for ideas, how this problem can be solved.
> 
> It's possible to not lock all traffic in netns and lock each socket
> separately. Currently this mode is used in a case when processes are
> dumped without netns.

That's too heavy. Instead -- lock everything but unlock only NFS channels :)