Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933223Ab1DMR1H (ORCPT ); Wed, 13 Apr 2011 13:27:07 -0400 Received: from mail-wy0-f174.google.com ([74.125.82.174]:37792 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932664Ab1DMR1F (ORCPT ); Wed, 13 Apr 2011 13:27:05 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=RJOLgRcNtSsH3nXPO/VDSMo9AoriEI8uuLiOkSGRZQ0vROhhzbI6TKWrTK8utcO9ar oVLLHHbnwGHDXWyeDhurPZ+OdyRa2d0zj+nhaM/mXP2iUpx8QbLiLFoUZe3grh4dX5Fo d7Z6WNIz91tzAfDjrOWlJ3v7gbnMwafgSLYLs= Message-ID: <4DA5DCB8.3040101@gmail.com> Date: Wed, 13 Apr 2011 13:26:16 -0400 From: Ric Wheeler User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110403 Fedora/3.1.9-6.fc15 Thunderbird/3.1.9 MIME-Version: 1.0 To: Michal Suchanek CC: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, David Howells , Ian Kent , Jeff Moyer , miklos@szeredi.hu, Christoph Hellwig Subject: Re: Unionmount status? References: <4DA4B6A8.7030804@gmail.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2482 Lines: 71 On 04/12/2011 05:36 PM, Michal Suchanek wrote: > On 12 April 2011 22:31, Ric Wheeler wrote: >> On 04/12/2011 11:00 AM, Michal Suchanek wrote: >>> Hello, >>> >>> as some already know the Unionmount VFS union which has been in >>> development for some years now is the only True Union (TM) that can be >>> accepted into the kernel mainline by the VFS maintainers (for reasons >>> of their own which you can surely find if you search the web or ask >>> them directly). >>> >>> The current UnionMount version that can be found here: >>> >>> >>> http://git.kernel.org/?p=linux/kernel/git/val/linux-2.6.git;a=shortlog;h=refs/heads/ext2_works >>> >>> works for me as good as aufs does. That is I can build a live CD using >>> this unioning solution and it boots and runs without any apparent >>> issues. >>> >>> There are probably many possible uses of the union which I did not >>> test nor did I test long term stability of using the unioned >>> filesystem. As far as ephemeral live systems go it works fine for me, >>> though. >>> >>> The issue is that while the code is (nearly) finished it is not yet >>> merged into mainline and as I am not familiar with the details of >>> ever-changing Linux VFS layer forward-porting this code to current >>> kernels is somewhat challenging. >>> >>> What is the plan with unionmount now? >>> >>> What is required for it to be merged into mainline? >>> >>> Thanks >>> >>> Michal >> Hi Michal, >> >> People are actively looking to see what union mount (or overlayfs) solution >> to pursue. Val has shifted her focus away from kernel hacking these days, >> but did refresh her patch set in the last month or so. > I am not aware of such refreshed patch set, at least it is not > published in her repo. > Val posted the refreshed patches with the title on March 22nd: http://lwn.net/Articles/435019/ Ric >> Miklos has an overlay file system that has also been posted upstream. > I have no idea about his other overlay filesystem either. > >> I think that testing like you did and getting more eyes to look at the code >> is the next key step for both projects. >> > Could you provide more details? > > I am not following the Linux fs development closely. > > Thanks > > Michal -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/