From: Serge Hallyn <serge.hallyn-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org>
To: Oren Laadan <orenl-3AfRa/s5aFdBDgjK7y7TUQ@public.gmane.org>
Cc: Linux Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
lxc-devel
<lxc-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: RFC: Device Namespaces
Date: Thu, 22 Aug 2013 13:21:18 -0500 [thread overview]
Message-ID: <20130822182118.GA28331@sergelap> (raw)
In-Reply-To: <CAA4jN2aw4zEW=UfKCyqaOvXnbiRb_J9srfCn4OXTFzc6vWBM4A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Quoting Oren Laadan (orenl@cellrox.com):
> Hi everyone!
>
> We [1] have been working on bringing lightweight virtualization to
> Linux-based mobile devices like Android (or other Linux-based devices with
> diverse I/O) and want to share our solution: device namespaces.
>
> Imagine you could run several instances of your favorite mobile OS or other
> distributions in isolated containers, each under the impression of having
> exclusive access to device drivers; Interact and switch between them within
> a blink, no flashing, no reboot.
>
> Device namespaces are an extension to existing Linux kernel namespaces that
> brings lightweight virtualization to Linux-based end-user devices,
> primarily mobile devices.
> Device namespaces introduce a private and virtual namespace for device
> drivers to create the illusion for a process group that it interacts
> exclusively with a set of drivers. Device namespaces also introduce the
> concepts of an “active” namespace with which a user interacts, vs
> “non-active” namespaces that run in the background, and the ability to
> switch between them.[2]
Note that unless I'm misunderstanding what you're saying here, this is
also what net_ns does. A netns can exist with no processes so long as
you've bound its /proc/$$/ns/net somewhere. You can then re-enter that
ns using ns_attach. I haven't looked closely enough yet to see whether
you should be (or are) using the same interface.
> We are planning to prepare individual patches to be submitted to the
Looking forward to it, and seeing you at the containers track :)
> 2: https://github.com/Cellrox/devns-patches/wiki/DeviceNamespace
> 3: https://github.com/Cellrox/devns-patches
> 4: https://github.com/Cellrox/devns-demo
(Have looked over the wiki, will look over the patches as well)
-serge
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next prev parent reply other threads:[~2013-08-22 18:21 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-22 17:43 RFC: Device Namespaces Oren Laadan
[not found] ` <CAA4jN2aw4zEW=UfKCyqaOvXnbiRb_J9srfCn4OXTFzc6vWBM4A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-22 18:21 ` Serge Hallyn [this message]
2013-08-26 10:11 ` Oren Laadan
[not found] ` <CAA4jN2YL7Lfu2+DW-i+MovFxWEhJfT4aBBKREU_vy7JX9TKGHA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-06 17:50 ` Eric W. Biederman
[not found] ` <8761udlu0d.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-09-08 12:28 ` Amir Goldstein
[not found] ` <CAA2m6vexArJ+6jFbK80Amstk=LK30=XDNHdBHSswP=LgpSP-6A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-09 0:51 ` Eric W. Biederman
[not found] ` <871u4yddg4.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-09-10 7:09 ` Amir Goldstein
[not found] ` <CAA2m6vc_kWWGDWcdjk26N3YvTqZySLFxPQRjOD9_ypBOka2+GQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-25 11:05 ` Janne Karhunen
[not found] ` <CAE=NcrbyFFoMn2nfBA_=ZtwD=eGLvqK=L-U9MuGrtJFLZfZppw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-25 20:23 ` Eric W. Biederman
[not found] ` <87ioxo4pm5.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-09-25 21:17 ` [lxc-devel] " Jeremy Andrus
[not found] ` <AD5F7BD2-0166-46BD-AB14-463C0E88BC92-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2013-09-25 21:47 ` Eric W. Biederman
[not found] ` <8738osr2ue.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-09-29 17:56 ` Amir Goldstein
2013-09-25 21:34 ` Eric W. Biederman
[not found] ` <87bo3gshz5.fsf_-_-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-09-26 5:33 ` Greg Kroah-Hartman
[not found] ` <20130926053320.GB3725-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-09-26 8:25 ` Janne Karhunen
[not found] ` <CAE=NcrbPXGWU8FUgwchXyL5HjXf+4AKbgUWGe1ZO=Xcq=iV-Lg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-26 13:56 ` Greg Kroah-Hartman
[not found] ` <20130926135604.GA16624-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-09-26 17:01 ` Janne Karhunen
[not found] ` <CAE=NcrY3xC1AF_GV2b1KsF7AwYZTuGBuKLS5yBUWoWcmKU4YBg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-26 17:07 ` Greg Kroah-Hartman
[not found] ` <20130926170757.GA9345-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-09-26 17:56 ` Janne Karhunen
2013-09-30 15:37 ` James Bottomley
[not found] ` <1380555439.2161.5.camel-sFMDBYUN5F8GjUHQrlYNx2Wm91YjaHnnhRte9Li2A+AAvxtiuMwx3w@public.gmane.org>
2013-09-30 16:11 ` Greg Kroah-Hartman
[not found] ` <20130930161117.GA26459-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-09-30 16:33 ` James Bottomley
2013-10-01 6:19 ` Janne Karhunen
[not found] ` <CAE=NcrYV2RiMV7PcwEjFGFRBrz9XdZGs86Wau2a+6xpYN2aEHA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-10-01 17:27 ` Andy Lutomirski
[not found] ` <CALCETrWWoHzuJcnfEUY+cFpOgT5gnG8U1cVbCW0_8V7Z_v6DJw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-10-01 17:53 ` Serge E. Hallyn
[not found] ` <20131001175345.GA4145-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2013-10-01 19:51 ` Eric W. Biederman
[not found] ` <87had0wz07.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-10-01 20:46 ` Serge Hallyn
2013-10-01 22:59 ` [lxc-devel] " Michael H. Warfield
2013-10-02 22:55 ` Eric W. Biederman
2013-10-01 20:57 ` Greg Kroah-Hartman
[not found] ` <20131001205718.GA17036-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-10-02 22:45 ` Eric W. Biederman
2013-10-01 22:19 ` Michael H. Warfield
2013-10-01 18:36 ` Janne Karhunen
2013-10-01 17:33 ` Greg Kroah-Hartman
[not found] ` <20131001173342.GA19267-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-10-01 18:23 ` Janne Karhunen
2013-10-28 23:31 ` Andrey Wagin
2013-08-29 19:06 ` RFC: " Andy Lutomirski
[not found] ` <521F9BBE.2070505-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
2013-09-03 19:35 ` [lxc-devel] " Stéphane Graber
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