Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932664Ab1DMTry (ORCPT ); Wed, 13 Apr 2011 15:47:54 -0400 Received: from mail-iw0-f174.google.com ([209.85.214.174]:62597 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932094Ab1DMTrx convert rfc822-to-8bit (ORCPT ); Wed, 13 Apr 2011 15:47:53 -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=sz9ATBINQcyQa2BvznZVGTpNslqO7lTUw0m6daAI2njuKnib+/RGPllnBkActlcHsp oZga23JziJCDKhxccfKryEQDP38J7iLo5VU9LJfN/4+EjPvPYIl0UkwY4KzoYudku8gU WNcnRP1CvkXwvhpQcwqTw8CtKDmT7FTlpN1ro= MIME-Version: 1.0 In-Reply-To: <4DA5F569.9020309@gmail.com> References: <4DA4B6A8.7030804@gmail.com> <4DA5DCB8.3040101@gmail.com> <4DA5F569.9020309@gmail.com> From: Michal Suchanek Date: Wed, 13 Apr 2011 21:47:32 +0200 X-Google-Sender-Auth: AHqv_GGmshG5bP-E6IZDPJCLqi8 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: 3565 Lines: 100 On 13 April 2011 21:11, Ric Wheeler wrote: > On 04/13/2011 02:58 PM, Michal Suchanek wrote: >> >> On 13 April 2011 19:26, Ric Wheeler  wrote: >>> >>> 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/ >>> >> That article references the same four months old repo which I >> mentioned at the start of the thread, only a slightly different >> branch. >> >> While it maybe useful for testing unionmount (which I already tried) >> it is not a patch against current kernel which could be used to build >> current live images. >> >> Thanks >> >> Michal > > She did post the patch series that same date in March - you can probably > grab the series from linux-fsdevel, look for this series: > > "[PATCH 00/74] Union mounts version something or other" > > Al Viro was planning on looking at her refreshed patches (he had reviewed > them with her in person), but that is not going to happen any time soon so > getting more eyes and testing would be great! > Even gmame can't collect the patches back from the ML, I don't want to try. However, the discussion suggests that these are exactly the 4 months old branch ending in a commit with the summary "Temporary commit" which did not inspire confidence in me so I used the previous (also 4 moths old) branch. 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/