linux-kernel - Re: [Announce] Checkpoint-restore tool v0.1

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Date:	Mon, 23 Jul 2012 08:14:19 -0500
From:	Serge Hallyn <serge.hallyn@...onical.com>
To:	Pavel Emelyanov <xemul@...allels.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	lwn@....net, "criu@...nvz.org" <criu@...nvz.org>, users@...nvz.org,
	cgroups mailinglist <cgroups@...r.kernel.org>,
	Containers <containers@...ts.linux-foundation.org>
Subject: Re: [Announce] Checkpoint-restore tool v0.1

Quoting Pavel Emelyanov (xemul@...allels.com):
> Fixing the bogus containers@ ml and adding cgroups@ one. Sorry :(
> 
> == Original message ==
> 
> Hi!
> 
> I'm glad to announce the first release of the checkpoint-restore tool.
> 
> 
> This project is an attempt to implement the checkpoint-restore functionality
> for processes and containers without driving too much code into the kernel tree,
> but putting there "various oddball helper code" instead.
> 
> The tool can already be used for checkpointing and restoring various individual
> applications. And the greatest thing about this so far is that most of the below
> functionality has the required kernel support in the recently released v3.5!
> 
> So, we support now
> 
> * x86_64 architecture
> * process' linkage
> * process groups and sessions (without ttys though :\ )
> * memory mappings of any kind (shared, file, etc.)
> * threads
> * open files (shared between tasks and partially opened-and-unlinked)
> * pipes and fifos with data
> * unix sockets with packet queues contents
> * TCP and UDP sockets (TCP connections support exists, but needs polishing)
> * inotifies, eventpoll and eventfd
> * tasks' sigactions setup, credentials and itimers
> * IPC, mount and PID namespaces
> 
> Though namespaces support is in there, we do not yet support an LXC container c/r,
> but we're close to it :)
> 
> 
> I'd like to thank everyone who took part in new kernel APIs discussions, the
> feedback was great! Special thanks goes to Linus for letting the kernel parts
> in early, instead of making them sit out of tree till becoming stable enough.
> 
> 
> Tarball with the tool sources is at
> 
>   http://download.openvz.org/criu/crtools-0.1.tar.bz2
> 
> The git repo is at
> 
>   http://git.criu.org/
> 
> And some sort of docs growing at
> 
>   http://criu.org/
> 
> 
> There are still things for which we don't have the kernel support merged (SysVIPC
> and various anon file descriptors, i.e. inotify, eventpoll, eventfd) yet. We have
> the kernel branch with the stuff applied available at
> 
>   https://github.com/cyrillos/linux-2.6.git
> 
> 
> Thanks,
> Pavel

Awesome - thanks, Pavel, and congratulations :)  I'll have to give it a
spin as soon as I get a chance.
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