From: Dave Hansen <dave@linux.vnet.ibm.com>
To: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Nathan Lynch <ntl@pobox.com>,
containers <containers@lists.linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
hch@infradead.org, Ingo Molnar <mingo@elte.hu>,
Alexey Dobriyan <adobriyan@gmail.com>
Subject: Re: [RFC][PATCH 8/8] check files for checkpointability
Date: Mon, 02 Mar 2009 09:58:26 -0800 [thread overview]
Message-ID: <1236016706.26788.478.camel@nimitz> (raw)
In-Reply-To: <20090302174433.GA12708@us.ibm.com>
On Mon, 2009-03-02 at 11:44 -0600, Serge E. Hallyn wrote:
> Which is what we actually do, right?
>
> Actually we have userspace create the tasks first, and
> then each task calls sys_restart which does restore_files().
Quoting:
http://git.ncl.cs.columbia.edu/?p=linux-cr.git;a=commitdiff;h=3c1b1900f92ed12f5020a7b566065bffda2908d8;hp=7aec1a8f3345bb33c3f93226c895a45ec269bb59
> Restarting of multiple processes expects all restarting tasks to call
> sys_restart(). Once inside the system call, each task will restart
> itself at the same order that they were saved. The internals of the
> syscall will take care of in-kernel synchronization bewteen tasks.
I guess it is OK since everybody sleeps once they enter sys_restart()
until the container init decides it is ready to go.
-- Dave
next prev parent reply other threads:[~2009-03-02 17:58 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-27 20:34 [RFC][PATCH 1/8] kill '_data' in cr_hdr_fd_data name Dave Hansen
2009-02-27 20:34 ` [RFC][PATCH 2/8] breakout fdinfo sprintf() into its own function Dave Hansen
2009-02-27 20:34 ` Dave Hansen
2009-02-27 20:56 ` Vegard Nossum
[not found] ` <19f34abd0902271256r49a06336rcba56234c06645a7-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-02-27 21:23 ` Dave Hansen
2009-02-27 21:23 ` Dave Hansen
2009-02-27 20:56 ` Vegard Nossum
2009-02-27 20:34 ` [RFC][PATCH 3/8] create fs flags to mark c/r supported fs's Dave Hansen
2009-02-27 20:34 ` Dave Hansen
2009-02-27 21:16 ` Alexey Dobriyan
2009-02-27 21:16 ` Alexey Dobriyan
2009-02-27 21:20 ` Dave Hansen
[not found] ` <20090227211620.GA3326-2ev+ksY9ol182hYKe6nXyg@public.gmane.org>
2009-02-27 21:20 ` Dave Hansen
2009-02-27 20:34 ` [RFC][PATCH 4/8] file c/r: expose functions to query fs support Dave Hansen
2009-02-27 20:34 ` Dave Hansen
2009-02-27 21:14 ` Sukadev Bhattiprolu
2009-02-27 21:14 ` Sukadev Bhattiprolu
2009-02-27 21:24 ` Dave Hansen
2009-02-27 21:32 ` Dave Hansen
2009-02-27 21:32 ` Dave Hansen
[not found] ` <20090227211408.GB19872-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-02-27 21:24 ` Dave Hansen
2009-02-28 1:33 ` Sukadev Bhattiprolu
2009-02-28 1:33 ` Sukadev Bhattiprolu
2009-02-27 20:34 ` [RFC][PATCH 5/8] add f_op for checkpointability Dave Hansen
2009-02-27 20:34 ` Dave Hansen
2009-02-28 2:14 ` Sukadev Bhattiprolu
2009-02-28 2:14 ` Sukadev Bhattiprolu
[not found] ` <20090228021412.GD19872-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-02-28 2:51 ` Dave Hansen
2009-02-28 2:51 ` Dave Hansen
2009-02-28 20:53 ` Christoph Hellwig
2009-02-28 20:53 ` Christoph Hellwig
2009-02-28 21:37 ` Dave Hansen
2009-03-01 15:19 ` Serge E. Hallyn
2009-03-01 15:19 ` Serge E. Hallyn
[not found] ` <20090228205329.GB4254-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2009-02-28 21:37 ` Dave Hansen
2009-03-02 17:05 ` Dave Hansen
2009-03-02 17:05 ` Dave Hansen
2009-03-03 13:15 ` Christoph Hellwig
[not found] ` <20090303131528.GB10931-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2009-03-20 21:13 ` Dave Hansen
2009-03-20 21:13 ` Dave Hansen
2009-03-20 21:30 ` Oren Laadan
2009-03-20 21:30 ` Oren Laadan
2009-03-03 13:15 ` Christoph Hellwig
2009-02-27 20:34 ` [RFC][PATCH 6/8] mark /dev/null and zero as checkpointable Dave Hansen
2009-02-27 20:34 ` Dave Hansen
2009-02-27 20:34 ` [RFC][PATCH 7/8] add c/r info to fdinfo Dave Hansen
2009-02-27 20:34 ` Dave Hansen
2009-02-27 20:34 ` [RFC][PATCH 8/8] check files for checkpointability Dave Hansen
2009-02-27 20:34 ` Dave Hansen
2009-02-28 2:57 ` Sukadev Bhattiprolu
2009-03-01 17:00 ` Serge E. Hallyn
2009-03-04 23:41 ` Dave Hansen
[not found] ` <20090228025743.GA22451-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-03-01 17:00 ` Serge E. Hallyn
2009-03-04 23:41 ` Dave Hansen
2009-02-28 2:57 ` Sukadev Bhattiprolu
2009-03-01 19:43 ` Serge E. Hallyn
2009-03-01 19:43 ` Serge E. Hallyn
2009-03-02 13:37 ` Serge E. Hallyn
2009-03-02 15:56 ` Dave Hansen
[not found] ` <20090302133754.GA8033-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-03-02 15:56 ` Dave Hansen
2009-03-02 15:59 ` Nathan Lynch
2009-03-02 15:59 ` Nathan Lynch
[not found] ` <20090302095917.6cfeda55-4v5LP+xe+1byhTdZtsIeww@public.gmane.org>
2009-03-02 16:27 ` Dave Hansen
2009-03-02 16:28 ` Serge E. Hallyn
2009-03-02 16:27 ` Dave Hansen
2009-03-02 17:22 ` Nathan Lynch
[not found] ` <20090302112247.76bb3662-4v5LP+xe+1byhTdZtsIeww@public.gmane.org>
2009-03-02 17:30 ` Dave Hansen
2009-03-02 17:30 ` Dave Hansen
2009-03-02 17:44 ` Serge E. Hallyn
2009-03-02 17:58 ` Dave Hansen [this message]
[not found] ` <20090302174433.GA12708-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-03-02 17:58 ` Dave Hansen
2009-03-02 18:13 ` Dave Hansen
2009-03-02 18:13 ` Dave Hansen
2009-03-02 18:35 ` Serge E. Hallyn
2009-03-02 18:35 ` Serge E. Hallyn
2009-03-05 8:20 ` Cedric Le Goater
2009-03-05 8:20 ` Cedric Le Goater
2009-03-02 17:44 ` Serge E. Hallyn
2009-03-02 17:22 ` Nathan Lynch
2009-03-02 16:28 ` Serge E. Hallyn
2009-03-02 13:37 ` Serge E. Hallyn
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