linux-kernel - Re: [PATCHv3 8/8] cgroup: Add documentation for cgroup namespaces

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Message-ID: <54AB2992.6060707@nod.at>
Date:	Tue, 06 Jan 2015 01:17:22 +0100
From:	Richard Weinberger <richard@....at>
To:	Aditya Kali <adityakali@...gle.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	Tejun Heo <tj@...nel.org>, Li Zefan <lizefan@...wei.com>,
	Serge Hallyn <serge.hallyn@...ntu.com>,
	Andy Lutomirski <luto@...capital.net>,
	cgroups mailinglist <cgroups@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux API <linux-api@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	Rohit Jnagal <jnagal@...gle.com>,
	Vivek Goyal <vgoyal@...hat.com>
Subject: Re: [PATCHv3 8/8] cgroup: Add documentation for cgroup namespaces

Am 06.01.2015 um 01:10 schrieb Aditya Kali:
> Since the old/default behavior is on its way out, I didn't invest time
> in fixing that. Also, some of the properties that make
> cgroup-namespace simpler are only provided by unified hierarchy (for
> example: a single root-cgroup per container).

Does the new sane cgroupfs behavior even have a single real world user?
I always thought it isn't stable yet.

Linux distros currently use systemd v210. They don't dare to use a newer one.
Even *if* systemd would support the sane sane cgroupfs behavior in the most recent
version it will take 1-2 years until it would hit a recent distro.

So please support also the old and nasty behavior such that one day we can run current
systemd distros in Linux containers.

Thanks,
//richard
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