From: Dave Hansen <dave@linux.vnet.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: containers@lists.linux-foundation.org,
Theodore Tso <tytso@mit.edu>,
linux-kernel@vger.kernel.org, Oren Laadan <orenl@cs.columbia.edu>
Subject: Re: [RFC][PATCH 1/4] checkpoint-restart: general infrastructure
Date: Fri, 08 Aug 2008 17:43:34 -0700 [thread overview]
Message-ID: <1218242614.19082.65.camel@nimitz> (raw)
In-Reply-To: <200808090039.20289.arnd@arndb.de>
On Sat, 2008-08-09 at 00:39 +0200, Arnd Bergmann wrote:
> The main problem I see with that would be atomicity: If you want multiple
> processes to keep interacting with each other, you need to save them at
> the same point in time, which gets harder as you split your interface into
> more than a single file descriptor.
It could take ages to write out a checkpoint even to a single fd, so I
suspect we'd have the exact same kinds of issues either way.
-- Dave
next prev parent reply other threads:[~2008-08-09 0:43 UTC|newest]
Thread overview: 141+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-07 22:40 [RFC][PATCH 0/4] kernel-based checkpoint restart Dave Hansen
2008-08-07 22:40 ` [RFC][PATCH 1/4] checkpoint-restart: general infrastructure Dave Hansen
2008-08-07 22:40 ` Dave Hansen
2008-08-08 9:46 ` Arnd Bergmann
2008-08-08 9:46 ` Arnd Bergmann
[not found] ` <200808081146.54834.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-08 18:50 ` Dave Hansen
2008-08-08 18:50 ` Dave Hansen
2008-08-08 20:59 ` Oren Laadan
2008-08-08 22:17 ` Dave Hansen
2008-08-08 23:27 ` Oren Laadan
2008-08-08 23:27 ` Oren Laadan
2008-08-08 22:23 ` Arnd Bergmann
[not found] ` <489CB3CA.6050304-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-08-08 22:17 ` Dave Hansen
2008-08-08 22:23 ` Arnd Bergmann
2008-08-14 8:09 ` [Devel] " Pavel Emelyanov
2008-08-14 8:09 ` Pavel Emelyanov
[not found] ` <48A3E81C.6010008-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
2008-08-14 15:16 ` Dave Hansen
2008-08-14 15:16 ` Dave Hansen
2008-08-08 20:59 ` Oren Laadan
2008-08-08 22:13 ` Arnd Bergmann
2008-08-08 22:26 ` Dave Hansen
2008-08-08 22:39 ` Arnd Bergmann
2008-08-09 0:43 ` Dave Hansen [this message]
2008-08-09 6:37 ` Arnd Bergmann
2008-08-09 13:39 ` Dave Hansen
[not found] ` <200808090837.07417.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-09 13:39 ` Dave Hansen
2008-08-09 6:37 ` Arnd Bergmann
[not found] ` <200808090039.20289.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-09 0:43 ` Dave Hansen
2008-08-08 22:39 ` Arnd Bergmann
2008-08-11 15:07 ` Serge E. Hallyn
2008-08-11 15:25 ` Arnd Bergmann
2008-08-14 5:53 ` Pavel Machek
[not found] ` <20080814055301.GH6995-+ZI9xUNit7I@public.gmane.org>
2008-08-14 15:12 ` Dave Hansen
2008-08-20 21:40 ` Oren Laadan
2008-08-20 21:40 ` Oren Laadan
2008-08-14 15:12 ` Dave Hansen
[not found] ` <20080811150703.GA25930-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-08-11 15:25 ` Arnd Bergmann
2008-08-14 5:53 ` Pavel Machek
2008-08-11 15:07 ` Serge E. Hallyn
[not found] ` <200808090013.41999.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-08 22:26 ` Dave Hansen
2008-08-11 15:22 ` Serge E. Hallyn
2008-08-11 15:22 ` Serge E. Hallyn
[not found] ` <20080811152201.GB25930-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-08-11 16:53 ` Arnd Bergmann
2008-08-11 16:53 ` Arnd Bergmann
2008-08-11 17:11 ` Dave Hansen
[not found] ` <200808111853.13854.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-11 17:11 ` Dave Hansen
2008-08-11 19:48 ` checkpoint/restart ABI Dave Hansen
2008-08-11 19:48 ` Dave Hansen
2008-08-11 21:47 ` Arnd Bergmann
[not found] ` <200808112347.50245.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-11 23:14 ` Jonathan Corbet
2008-08-21 5:56 ` Oren Laadan
2008-08-21 5:56 ` Oren Laadan
[not found] ` <48AD0379.9030705-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-08-21 8:43 ` Arnd Bergmann
2008-08-21 8:43 ` Arnd Bergmann
[not found] ` <200808211043.41387.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-21 15:43 ` Oren Laadan
2008-08-21 15:43 ` Oren Laadan
2008-08-11 23:14 ` Jonathan Corbet
2008-08-11 23:23 ` Dave Hansen
[not found] ` <20080811171433.2ce81f28-vw3g6Xz/EtPk1uMJSBkQmQ@public.gmane.org>
2008-08-11 23:23 ` Dave Hansen
2008-08-11 21:47 ` Arnd Bergmann
2008-08-11 21:54 ` Oren Laadan
2008-08-11 21:54 ` Oren Laadan
2008-08-11 23:38 ` Jeremy Fitzhardinge
2008-08-11 23:38 ` Jeremy Fitzhardinge
2008-08-11 23:54 ` Peter Chubb
2008-08-12 14:49 ` Serge E. Hallyn
[not found] ` <20080812144905.GA16016-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-08-28 23:40 ` Eric W. Biederman
2008-08-28 23:40 ` Eric W. Biederman
[not found] ` <87d4kfds5i.wl%peterc-LkDQP0DxSMGxwJ88Py/mJxCuuivNXqWP@public.gmane.org>
2008-08-12 14:49 ` Serge E. Hallyn
2008-08-12 15:11 ` Dave Hansen
2008-08-12 15:11 ` Dave Hansen
2008-08-12 14:58 ` Dave Hansen
2008-08-12 16:32 ` Jeremy Fitzhardinge
[not found] ` <48A1BB39.3090108-TSDbQ3PG+2Y@public.gmane.org>
2008-08-12 16:46 ` Dave Hansen
2008-08-12 16:46 ` Dave Hansen
2008-08-12 17:04 ` Jeremy Fitzhardinge
2008-08-12 17:04 ` Jeremy Fitzhardinge
2008-08-20 21:52 ` Oren Laadan
[not found] ` <48A1C2B9.9070107-TSDbQ3PG+2Y@public.gmane.org>
2008-08-20 21:52 ` Oren Laadan
2008-08-20 21:54 ` Oren Laadan
2008-08-20 21:54 ` Oren Laadan
2008-08-20 22:11 ` Dave Hansen
[not found] ` <48AC929C.9030901-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-08-20 22:11 ` Dave Hansen
2008-08-12 16:32 ` Jeremy Fitzhardinge
[not found] ` <48A0CD86.6030704-TSDbQ3PG+2Y@public.gmane.org>
2008-08-11 23:54 ` Peter Chubb
2008-08-12 14:58 ` Dave Hansen
2008-08-08 22:13 ` [RFC][PATCH 1/4] checkpoint-restart: general infrastructure Arnd Bergmann
2008-08-11 18:03 ` Jonathan Corbet
2008-08-11 18:03 ` Jonathan Corbet
2008-08-11 18:38 ` Dave Hansen
2008-08-12 3:44 ` Oren Laadan
2008-08-12 3:44 ` Oren Laadan
[not found] ` <20080811120315.4b3ba2c8-vw3g6Xz/EtPk1uMJSBkQmQ@public.gmane.org>
2008-08-11 18:38 ` Dave Hansen
2008-08-18 9:26 ` [Devel] " Pavel Emelyanov
2008-08-18 9:26 ` Pavel Emelyanov
2008-08-20 19:10 ` Dave Hansen
[not found] ` <48A94061.8040206-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
2008-08-20 19:10 ` Dave Hansen
2008-08-07 22:40 ` [RFC][PATCH 2/4] checkpoint/restart: x86 support Dave Hansen
2008-08-07 22:40 ` Dave Hansen
2008-08-08 12:09 ` Arnd Bergmann
2008-08-08 12:09 ` Arnd Bergmann
[not found] ` <200808081409.30591.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-08 20:28 ` Oren Laadan
2008-08-08 20:28 ` Oren Laadan
[not found] ` <489CAC70.7090809-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-08-08 22:29 ` Arnd Bergmann
2008-08-08 22:29 ` Arnd Bergmann
2008-08-08 23:04 ` Oren Laadan
2008-08-09 0:38 ` Dave Hansen
2008-08-09 1:20 ` Oren Laadan
2008-08-09 2:20 ` Dave Hansen
2008-08-09 2:35 ` Oren Laadan
2008-08-09 2:35 ` Oren Laadan
[not found] ` <489CF0CE.1000603-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-08-09 2:20 ` Dave Hansen
2008-08-09 1:20 ` Oren Laadan
2008-08-10 14:55 ` Jeremy Fitzhardinge
2008-08-10 14:55 ` Jeremy Fitzhardinge
[not found] ` <489F015E.9080704-TSDbQ3PG+2Y@public.gmane.org>
2008-08-11 15:36 ` Dave Hansen
2008-08-11 15:36 ` Dave Hansen
2008-08-11 16:07 ` Jeremy Fitzhardinge
2008-08-11 16:07 ` Jeremy Fitzhardinge
[not found] ` <489CD0F9.9060603-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-08-09 0:38 ` Dave Hansen
2008-08-09 6:43 ` Arnd Bergmann
2008-08-09 6:43 ` Arnd Bergmann
[not found] ` <200808090029.28286.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-08 23:04 ` Oren Laadan
2008-08-07 22:40 ` [RFC][PATCH 3/4] checkpoint/restart: memory management Dave Hansen
2008-08-08 12:12 ` Arnd Bergmann
2008-08-08 12:12 ` Arnd Bergmann
2008-08-07 22:40 ` Dave Hansen
2008-08-07 22:40 ` [RFC][PATCH 4/4] introduce sys_checkpoint and sys_restore Dave Hansen
2008-08-07 22:40 ` Dave Hansen
2008-08-08 12:15 ` Arnd Bergmann
2008-08-08 12:15 ` Arnd Bergmann
[not found] ` <200808081415.19179.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-08 20:33 ` Oren Laadan
2008-08-08 20:33 ` Oren Laadan
2008-08-08 9:25 ` [RFC][PATCH 0/4] kernel-based checkpoint restart Arnd Bergmann
2008-08-08 9:25 ` Arnd Bergmann
2008-08-08 18:06 ` Dave Hansen
2008-08-08 18:18 ` Arnd Bergmann
2008-08-08 18:18 ` Arnd Bergmann
[not found] ` <200808081125.12706.arnd-r2nGTMty4D4@public.gmane.org>
2008-08-08 18:06 ` Dave Hansen
2008-08-08 19:44 ` Oren Laadan
2008-08-08 19:44 ` Oren Laadan
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