Hi Salvatore,

Thanks for the follow-up.

> On May 4, 2025, at 4:27 PM, Salvatore Bonaccorso <car...@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
r...@mars.org


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