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SubjectRe: Unionmount status?
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:
>>>>>> 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:
>> 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.


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