Re: [PATCH RFC 00/10] dm-dedup: device-mapper deduplication target

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Hi Mike,

Thanks for your initial reviewing steps! Here is what we plan to do:

1) Address your current comments

2) Few people mentioned that our documentation need to be formatted
better and be more detailed. We'll address this.

3) There are several things in dm-dedup that we would like to improve.
We will work on that to.

4) We will then post dm-dedup v2 patchset and prepare a fresh git
branch. It will definitely happen before you're available in
September.

5) If Joe and/or Mikulas can take a look at the code meanwhile - that
would be great!

Thank you,
Vasily

On Thu, Jul 17, 2014 at 10:43 PM, Mike Snitzer <snitzer@xxxxxxxxxx> wrote:
> On Tue, May 06 2014 at  9:43am -0400,
> Vasily Tarasov <tarasov@xxxxxxxxxxx> wrote:
>
>> Interestingly, I can see 4, 5, and 7 in dm-devel's archive:
>>
>> https://www.redhat.com/archives/dm-devel/2014-April/author.html
>>
>> In any case, you can pull the patches from:
>>
>> git://git.fsl.cs.sunysb.edu/linux-dmdedup.git
>>
>> Branch: rfc-v1.1
>>
>> Thanks for looking into this.
>
> Hi,
>
> I haven't been able to get to _really_ reviewing dm-dedup.  It isn't
> anything against you guys.. I've just been quite busy with other tasks.
>
> I did start in on dm-dedup a month or so ago by staging a baseline of
> your work in a branch here:
> http://git.kernel.org/cgit/linux/kernel/git/snitzer/linux.git/log/?h=dm-dedup
>
> I found a few things that didn't look right, but they are more
> DM-specific mechanics and not anything to do with your approach for
> accomplishing dedup, see the FIXMEs I added to the documentation file in
> this commit:
> http://git.kernel.org/cgit/linux/kernel/git/snitzer/linux.git/commit/?h=dm-dedup&id=fed855928fba624c7a494db7519c37dcc7c9492d
>
> The reconstruct= param isn't needed.  In both dm-thinp and dm-cache we
> use __superblock_all_zeroes to checks if the metadata device's
> superblock is all zeros.  Ideally dm-dedup would do something
> comparable.
>
> I'm going to be on paternity leave until Sept. 8.  It'd be great if Joe
> and/or Mikulas took some time to review dm-dedup but I'm not sure if
> they'll be able to.  I do hope to be around to respond to emails
> periodically but my availability is TBD at this point.
>
> When I get back from leave I'll definitely make dm-dedup a priority if
> others don't beat me to it.
>

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