lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 11 Feb 2015 17:18:51 +0100 From: "Serge E. Hallyn" <serge@...lyn.com> To: Tejun Heo <tj@...nel.org> Cc: "Serge E. Hallyn" <serge@...lyn.com>, "Eric W. Biederman" <ebiederm@...ssion.com>, Richard Weinberger <richard@....at>, Linux API <linux-api@...r.kernel.org>, Linux Containers <containers@...ts.linux-foundation.org>, Serge Hallyn <serge.hallyn@...ntu.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Andy Lutomirski <luto@...capital.net>, cgroups mailinglist <cgroups@...r.kernel.org>, Ingo Molnar <mingo@...hat.com> Subject: Re: [PATCHv3 8/8] cgroup: Add documentation for cgroup namespaces Quoting Tejun Heo (tj@...nel.org): > On Wed, Feb 11, 2015 at 05:00:23PM +0100, Serge E. Hallyn wrote: > > We absolutely would love to use cgroup namespaces to run older > > userspace in containers. I don't know that it's actually possible > > to do both that and use unified hierarchy at the same time though, > > which is unfortunate. So an Ubuntu 12.04 container will never, afaics, > > be able to run inside an ubuntu 16.04 host that is using unified > > hierarchy, without using backported newer versions of lxc (etc) in > > the container. > > So, the constraint there are the controllers. A controller can't be > attached to two hierarchies at the same time for obvious reasons, so > regardless of NS, you can't use the same controller on a unified > hierarchy *and* a traditional hierarchy. NS doesn't adds or > substracts from the situation. If you decide to attach a controller > to a traditional hierarchy, that's where it's gonna be available. If > you attach it to the unified hierarchy, the same story. Right, exactly. thanks, -serge -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists