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Groups > linux.debian.kernel > #87385

Bug#1073979: Please consider enabling the dm-clone module (CONFIG_DM_CLONE)

From Rob Leslie <rob@mars.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1073979: Please consider enabling the dm-clone module (CONFIG_DM_CLONE)
Date 2025-05-05 22:00 +0200
Message-ID <KJa8O-YNX-3@gated-at.bofh.it> (permalink)
References <KI2Q1-gBK-3@gated-at.bofh.it> <KIPe1-LGf-3@gated-at.bofh.it> <IRyBH-4na5-5@gated-at.bofh.it> <KIPe1-LGf-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi Salvatore,

Thanks for the follow-up.

> On May 4, 2025, at 4:27 PM, Salvatore Bonaccorso <carnil@debian.org> wrote:
> 
> Thanks for following up on
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1073979#12
> 
> this misses some explanations. DM_CLONE is still marked experimental
> (since the initial commit and never got removed) upstream, can you
> elaborate why it is believed we should enable this despite in the
> Debian provided kernel?


DM_CLONE is useful to have available in certain circumstances. I have successfully used it more than once over the years to do live data migrations. It was a hassle to build custom kernels just for this, but in the end quite worth it. Having DM_CLONE available as a module in Debian by default would greatly simplify the lives of others finding themselves in similar situations. The fact that more than one bug was filed requesting it shows there is interest.

Although marked experimental, I have experienced no problems with it. I note that DM_CACHE is also marked experimental, yet already enabled in Debian despite this.

Thanks for your consideration.

-- 
Rob Leslie
rob@mars.org


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Thread

Bug#1073979: Please consider enabling the dm-clone module (CONFIG_DM_CLONE) Rob Leslie <rob@mars.org> - 2024-06-21 00:40 +0200
  Bug#1073979: marked as done (Please consider enabling the  dm-clone module (CONFIG_DM_CLONE)) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-05-01 14:40 +0200
  Bug#1073979: Please consider enabling the dm-clone module (CONFIG_DM_CLONE) Salvatore Bonaccorso <carnil@debian.org> - 2025-05-04 23:40 +0200
    Bug#1073979: Please consider enabling the dm-clone module (CONFIG_DM_CLONE) Rob Leslie <rob@mars.org> - 2025-05-05 22:00 +0200
  Processed: Re: Please consider enabling the dm-clone module  (CONFIG_DM_CLONE) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-05-04 23:40 +0200
  Bug#1073979: marked as done (Please consider enabling the  dm-clone module (CONFIG_DM_CLONE)) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-05-09 22:50 +0200

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