[systemd-devel] systemd and process migration

Lennart Poettering lennart at poettering.net
Mon Apr 20 07:35:12 PDT 2015


On Mon, 20.04.15 14:33, Jóhann B. Guðmundsson (johannbg at gmail.com) wrote:

> On 04/20/2015 01:58 PM, Lennart Poettering wrote:
> >systemd has no provisions for anything like this and I have doubts it
> >really should have. I mean, normal programs retain ccess to the cgroup
> >tree, so you could readd whatever you restore back in the cgroups, but
> >that's hardly sufficient to make systemd aware of a process like this
> >properly.
> 
> Arguably systemd should have this functionality ( along with quite few
> others like HA etc ) built in ( not using CRIU ) since you want to live
> migrate at least native containers between hosts.
> 
> I thought fancy enterprise features like this was on hold until networkd was
> "ready" ?

This is not an enterprise feature. It's a promise one cannot keep. We
will not add code to systemd that works often but not always, and CRIU
is certainly of that kind.

Sorry,

Lennart

-- 
Lennart Poettering, Red Hat


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