From: James Bottomley <James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
To: Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Cc: Linux Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
Kay Sievers <kay.sievers-tD+1rO4QERM@public.gmane.org>,
Stephane Graber
<stgraber-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org>,
Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>,
"Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>,
lxc-devel
<lxc-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
mhw <mhw-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
devel <devel-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
Subject: Re: Device Namespaces
Date: Mon, 30 Sep 2013 08:37:19 -0700 [thread overview]
Message-ID: <1380555439.2161.5.camel@dabdike.int.hansenpartnership.com> (raw)
In-Reply-To: <20130926170757.GA9345-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
On Thu, 2013-09-26 at 10:07 -0700, Greg Kroah-Hartman wrote:
> On Thu, Sep 26, 2013 at 08:01:31PM +0300, Janne Karhunen wrote:
> > That being said, our wish would be to support any combination of
> > OS's and frankly, I'd be slightly annoyed to tell the customer that
> > they can't do two Androids or we magically run out of bits.
>
> If you want to support "any" combination of operating systems, then use
> a hypervisor, that's what they are there for :)
No that's not quite the right way to think about it: The correct
statement is only use a hypervisor if you need different kernels. With
Windows, it happens to be true that you need a different kernel for each
different OS version. However; with Linux, thanks to strong ABI
backwards compatibility, you mostly don't. The way OpenVZ works today
is that it installs a modified kernel which can then bring up every
Linux OS in a separate container. Our use case is the hosters that give
you root login to a virtual private server and allow you to upgrade it
on your own. The reason for using a container rather than a hypervisor
is the old density and elasticity one: 3x the density (i.e. 1/3 the
overhead cost to the hoster) and the boot only needs to start at init,
not bring up of virtual hardware and booting a second kernel.
James
next prev parent reply other threads:[~2013-09-30 15:37 UTC|newest]
Thread overview: 63+ 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
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 [this message]
[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
2013-09-29 19:28 Amir Goldstein
[not found] ` <CAA2m6veny-7_ONMA973Wu36U4kz4gAuw0dpodkb8+GZDv6VNBQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-29 20:06 ` Greg Kroah-Hartman
[not found] ` <20130929200620.GA31304-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-09-30 15:36 ` Michael H. Warfield
2013-10-03 0:44 ` Eric W. Biederman
[not found] ` <87a9iri3ot.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-10-03 0:59 ` Eric W. Biederman
2013-10-03 8:58 ` Amir Goldstein
[not found] ` <CAA2m6vc3OFmS9VwiTavRzPqhn+qoe6vDCO2sitXpEQ8a1JVyfg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-10-03 9:17 ` Eric W. Biederman
2021-06-08 9:38 device namespaces Enrico Weigelt, metux IT consult
2021-06-08 12:30 ` Christian Brauner
2021-06-08 12:41 ` Greg Kroah-Hartman
2021-06-08 14:10 ` Hannes Reinecke
2021-06-08 14:29 ` Christian Brauner
2021-06-08 15:54 ` Hannes Reinecke
2021-06-08 17:16 ` Eric W. Biederman
2021-06-09 6:38 ` Christian Brauner
2021-06-09 7:02 ` Hannes Reinecke
2021-06-09 7:21 ` Christian Brauner
2021-06-09 7:54 ` Hannes Reinecke
2021-06-09 8:09 ` Christian Brauner
2021-06-11 18:14 ` Eric W. Biederman
2021-06-14 7:49 ` Enrico Weigelt, metux IT consult
2021-06-14 8:22 ` Greg KH
2021-06-14 17:36 ` Eric W. Biederman
2021-06-15 11:24 ` Enrico Weigelt, metux IT consult
2021-06-15 11:33 ` Greg KH
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