Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932654Ab1DLVhA (ORCPT ); Tue, 12 Apr 2011 17:37:00 -0400 Received: from mail-iw0-f174.google.com ([209.85.214.174]:62099 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932568Ab1DLVg7 convert rfc822-to-8bit (ORCPT ); Tue, 12 Apr 2011 17:36:59 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:cc:content-type :content-transfer-encoding; b=RwSF0XFpHTziECPd2nsGMcG5q/yDBAqFhJhdX1vlVSqA8l+n95RcJeNdJOfqo3ztnJ Ef0x0ZlTLIdgOe3xfrLvHM6fLUNUuAnBf3UvV4soy3adgC7j8Qb2r1HrOel9L5Ug0mF7 0GVyInv3JpFIjMjenTcbSiVVIWMwee7YRaigs= MIME-Version: 1.0 In-Reply-To: <4DA4B6A8.7030804@gmail.com> References: <4DA4B6A8.7030804@gmail.com> From: Michal Suchanek Date: Tue, 12 Apr 2011 23:36:38 +0200 X-Google-Sender-Auth: yCxcrxLiXwxLM4ns6N3H7kgQ-ps Message-ID: Subject: Re: Unionmount status? To: Ric Wheeler Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, David Howells , Ian Kent , Jeff Moyer , miklos@szeredi.hu, Christoph Hellwig Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2279 Lines: 69 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. > > 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/