From: Alexey Dobriyan <adobriyan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Linus Torvalds
<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Cc: Sukadev Bhattiprolu
<sukadev-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Ying Han <yinghan-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
"Serge E. Hallyn" <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Dave Hansen
<dave-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org,
mingo-X9Un+BFzKDI@public.gmane.org,
mpm-VDJrAJ4Gl5ZBDgjK7y7TUQ@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
xemul-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org,
tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org
Subject: Re: How much of a mess does OpenVZ make? ;) Was: What can OpenVZ do?
Date: Sat, 14 Mar 2009 03:20:59 +0300 [thread overview]
Message-ID: <20090314002059.GA4167@x200.localdomain> (raw)
In-Reply-To: <alpine.LFD.2.00.0903131401070.3940-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
On Fri, Mar 13, 2009 at 02:01:50PM -0700, Linus Torvalds wrote:
>
>
> On Fri, 13 Mar 2009, Alexey Dobriyan wrote:
> > >
> > > Let's face it, we're not going to _ever_ checkpoint any kind of general
> > > case process. Just TCP makes that fundamentally impossible in the general
> > > case, and there are lots and lots of other cases too (just something as
> > > totally _trivial_ as all the files in the filesystem that don't get rolled
> > > back).
> >
> > What do you mean here? Unlinked files?
>
> Or modified files, or anything else. "External state" is a pretty damn
> wide net. It's not just TCP sequence numbers and another machine.
I think (I think) you're seriously underestimating what's doable with
kernel C/R and what's already done.
I was told (haven't seen it myself) that Oracle installations and
Counter Strike servers were moved between boxes just fine.
They were run in specially prepared environment of course, but still.
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next prev parent reply other threads:[~2009-03-14 0:20 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-27 17:07 [RFC v13][PATCH 00/14] Kernel based checkpoint/restart Oren Laadan
2009-01-27 17:07 ` [RFC v13][PATCH 01/14] Create syscalls: sys_checkpoint, sys_restart Oren Laadan
2009-01-27 17:20 ` Randy Dunlap
2009-01-27 17:08 ` [RFC v13][PATCH 02/14] Checkpoint/restart: initial documentation Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 03/14] Make file_pos_read/write() public Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 04/14] General infrastructure for checkpoint restart Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 05/14] x86 support for checkpoint/restart Oren Laadan
2009-02-24 7:47 ` Nathan Lynch
[not found] ` <20090224014739.1b82fc35-4v5LP+xe+1byhTdZtsIeww@public.gmane.org>
2009-02-24 16:06 ` Dave Hansen
2009-03-18 7:21 ` Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 06/14] Dump memory address space Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 07/14] Restore " Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 08/14] Infrastructure for shared objects Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 09/14] Dump open file descriptors Oren Laadan
[not found] ` <1233076092-8660-1-git-send-email-orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2009-01-27 17:08 ` [RFC v13][PATCH 10/14] Restore open file descriprtors Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 12/14] Track in-kernel when we expect checkpoint/restart to work Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 14/14] Restart multiple processes Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 11/14] External checkpoint of a task other than ourself Oren Laadan
2009-01-27 17:08 ` [RFC v13][PATCH 13/14] Checkpoint multiple processes Oren Laadan
2009-02-10 17:05 ` [RFC v13][PATCH 00/14] Kernel based checkpoint/restart Dave Hansen
2009-02-11 22:14 ` Andrew Morton
2009-02-12 9:17 ` Ingo Molnar
[not found] ` <20090212091721.GB1888-X9Un+BFzKDI@public.gmane.org>
2009-02-12 18:11 ` Dave Hansen
2009-02-12 20:48 ` Serge E. Hallyn
2009-02-13 10:20 ` Ingo Molnar
2009-02-12 18:11 ` Dave Hansen
2009-02-12 19:30 ` Matt Mackall
2009-02-12 19:42 ` Andrew Morton
2009-02-12 21:51 ` What can OpenVZ do? Dave Hansen
2009-02-12 22:10 ` Andrew Morton
2009-02-12 23:04 ` How much of a mess does OpenVZ make? ;) Was: " Dave Hansen
2009-02-26 15:57 ` Alexey Dobriyan
2009-03-10 21:53 ` Alexey Dobriyan
2009-03-10 23:28 ` Serge E. Hallyn
2009-03-11 8:26 ` Cedric Le Goater
2009-03-12 14:53 ` Serge E. Hallyn
2009-03-12 21:01 ` Greg Kurz
2009-03-12 21:21 ` Serge E. Hallyn
2009-03-13 4:29 ` Ying Han
2009-03-13 5:34 ` Sukadev Bhattiprolu
[not found] ` <20090313053458.GA28833-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-03-13 6:19 ` Ying Han
2009-03-13 17:27 ` Linus Torvalds
2009-03-13 19:02 ` Serge E. Hallyn
[not found] ` <alpine.LFD.2.00.0903131018390.3940-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2009-03-13 19:35 ` Alexey Dobriyan
2009-03-13 21:01 ` Linus Torvalds
2009-03-13 21:51 ` Dave Hansen
2009-03-13 22:15 ` Oren Laadan
2009-03-14 0:27 ` Eric W. Biederman
2009-03-14 8:12 ` Ingo Molnar
2009-03-16 22:33 ` Kevin Fox
2009-03-19 21:19 ` Eric W. Biederman
[not found] ` <alpine.LFD.2.00.0903131401070.3940-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2009-03-14 0:20 ` Alexey Dobriyan [this message]
2009-03-14 8:25 ` Ingo Molnar
[not found] ` <20090314082532.GB16436-X9Un+BFzKDI@public.gmane.org>
2009-03-14 17:11 ` Joseph Ruscio
2009-03-16 6:01 ` Oren Laadan
2009-03-13 20:48 ` Mike Waychison
2009-03-13 22:35 ` Oren Laadan
2009-03-18 18:54 ` Mike Waychison
2009-03-18 19:04 ` Oren Laadan
[not found] ` <604427e00903122129y37ad791aq5fe7ef2552415da9-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-03-13 15:27 ` Cedric Le Goater
[not found] ` <49BA7B60.60607-GANU6spQydw@public.gmane.org>
2009-03-13 17:11 ` Greg Kurz
2009-03-13 17:37 ` Serge E. Hallyn
2009-03-13 15:47 ` Cedric Le Goater
2009-03-13 16:35 ` Serge E. Hallyn
2009-03-13 16:53 ` Cedric Le Goater
2009-02-26 16:27 ` Alexey Dobriyan
2009-02-26 17:33 ` Ingo Molnar
[not found] ` <20090226173302.GB29439-X9Un+BFzKDI@public.gmane.org>
2009-02-26 18:30 ` Greg Kurz
2009-02-26 22:17 ` Alexey Dobriyan
[not found] ` <20090226221709.GA2924-2ev+ksY9ol182hYKe6nXyg@public.gmane.org>
2009-02-27 9:19 ` Greg Kurz
2009-02-27 10:53 ` Alexey Dobriyan
2009-02-27 14:33 ` Cedric Le Goater
2009-02-27 9:36 ` Cedric Le Goater
2009-02-26 22:31 ` Alexey Dobriyan
2009-02-27 9:03 ` Ingo Molnar
2009-02-27 9:19 ` Andrew Morton
2009-02-27 10:57 ` Alexey Dobriyan
[not found] ` <20090227090323.GC16211-X9Un+BFzKDI@public.gmane.org>
2009-02-27 9:22 ` Andrew Morton
2009-02-27 10:59 ` Alexey Dobriyan
2009-02-27 16:14 ` Dave Hansen
2009-02-27 21:57 ` Alexey Dobriyan
[not found] ` <20090227215749.GA3453-2ev+ksY9ol182hYKe6nXyg@public.gmane.org>
2009-02-27 21:54 ` Dave Hansen
[not found] ` <20090226223112.GA2939-2ev+ksY9ol182hYKe6nXyg@public.gmane.org>
2009-03-01 1:33 ` Alexey Dobriyan
[not found] ` <20090301013304.GA2428-2ev+ksY9ol182hYKe6nXyg@public.gmane.org>
2009-03-01 20:02 ` Serge E. Hallyn
[not found] ` <20090301200231.GA25276-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-03-01 20:56 ` Alexey Dobriyan
2009-03-01 22:21 ` Serge E. Hallyn
2009-03-03 16:17 ` Cedric Le Goater
2009-03-03 18:28 ` Serge E. Hallyn
2009-02-13 10:53 ` Ingo Molnar
[not found] ` <20090213105302.GC4608-X9Un+BFzKDI@public.gmane.org>
2009-02-16 20:51 ` Dave Hansen
2009-02-17 22:23 ` Ingo Molnar
[not found] ` <20090217222319.GA10546-X9Un+BFzKDI@public.gmane.org>
2009-02-17 22:30 ` Dave Hansen
2009-02-18 0:32 ` Ingo Molnar
2009-02-18 0:40 ` Dave Hansen
2009-02-18 5:11 ` Alexey Dobriyan
2009-02-18 18:16 ` Ingo Molnar
[not found] ` <20090218181644.GD19995-X9Un+BFzKDI@public.gmane.org>
2009-02-18 21:27 ` Dave Hansen
2009-02-18 23:15 ` Ingo Molnar
2009-02-19 19:06 ` Banning checkpoint (was: Re: What can OpenVZ do?) Alexey Dobriyan
2009-02-19 19:11 ` Dave Hansen
2009-02-24 4:47 ` Alexey Dobriyan
[not found] ` <20090224044752.GB3202-2ev+ksY9ol182hYKe6nXyg@public.gmane.org>
2009-02-24 5:11 ` Dave Hansen
2009-02-24 15:43 ` Serge E. Hallyn
2009-02-24 20:09 ` Alexey Dobriyan
2009-02-12 22:17 ` What can OpenVZ do? Alexey Dobriyan
2009-02-13 10:27 ` Ingo Molnar
2009-02-13 11:32 ` Alexey Dobriyan
2009-02-13 11:45 ` Ingo Molnar
2009-02-13 22:28 ` Alexey Dobriyan
2009-03-14 0:04 ` Eric W. Biederman
2009-03-14 0:26 ` Serge E. Hallyn
2009-02-12 22:57 ` [RFC v13][PATCH 00/14] Kernel based checkpoint/restart Dave Hansen
2009-02-12 23:05 ` Matt Mackall
2009-02-12 23:13 ` Dave Hansen
2009-02-13 23:28 ` Andrew Morton
2009-02-14 23:08 ` Ingo Molnar
2009-02-14 23:31 ` Andrew Morton
2009-02-14 23:50 ` Ingo Molnar
[not found] ` <20090213152836.0fbbfa7d.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2009-02-16 17:37 ` Dave Hansen
2009-03-13 2:45 ` Oren Laadan
2009-03-13 3:57 ` Oren Laadan
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