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Date: Tue, 06 Jan 2015 01:17:22 +0100
From: Richard Weinberger <richard@nod.at>
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To: Aditya Kali <adityakali@google.com>,
        "Eric W. Biederman" <ebiederm@xmission.com>
CC: Tejun Heo <tj@kernel.org>, Li Zefan <lizefan@huawei.com>,
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        Linux Containers <containers@lists.linux-foundation.org>,
        Rohit Jnagal <jnagal@google.com>, Vivek Goyal <vgoyal@redhat.com>
Subject: Re: [PATCHv3 8/8] cgroup: Add documentation for cgroup namespaces
References: <1417744550-6461-1-git-send-email-adityakali@google.com> <1417744550-6461-9-git-send-email-adityakali@google.com> <548E17CE.8010704@nod.at> <CAGr1F2HA6mzFwgp5ngX8P7=198-5CmCjLmuCJ8j3eQ08J2d9Qw@mail.gmail.com> <54AB15BD.8020007@nod.at> <87lhlgpyxk.fsf@x220.int.ebiederm.org> <CAGr1F2HSi_D07r2c5CKOsjSR1+58k9G2MrtACsd+HV6XKvJ7cA@mail.gmail.com>
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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