[CRIU] [PATCHv2] dump: preserve the dumpable flag on criu dump/restore

[Filipe Brandenburger]

Hi Andrew, Pavel,

On Tue, Jun 17, 2014 at 2:33 AM, Andrew Vagin <avagin at parallels.com> wrote:
> prctl((PR_SET_DUMPABLE, 2) always fails. Filipe, do you want to
> investigate how to handle this situation?

Yes, Saied and I were discussing this yesterday, apparently some
versions of docker are leaving processes in dumpable==2 state and
migration was failing with my patch...

I want to look into what is leaving processes into this dumpable==2
state for now. I want to see if we have a good way to reproduce it on
restore without needing to set it to 2 using prctl and if there's not
a good way to do it, whether we can just fallback to set it to 0 in
those cases and if that would be good enough approximation.

I should be sending you more code later this week or early next week
at the latest.

Cheers,
Filipe