Hello Salvatore.
Thank you for your quick reply.
So it appears that it's not a debian kernel build config bug; this
change was made in the kernel repo not only in debian.
Thank you for the actual links to MD_LINEAR removal description on site
kernel.org.
We can close this discussion branch then.
I don't think we should go deeply into my case. I'm going to find the
solution for it.
Best regards,
IG
вт, 12 авг. 2025 г. в 06:44, Salvatore Bonaccorso <[email protected]>:
> Control: tags -1 + moreinfo
>
> Hi,
>
> On Tue, Aug 12, 2025 at 12:39:13AM +0300, Good Grief wrote:
> > Package: linux-image-6.12.38+deb13-amd64
> > Version: 6.12.38-1
> >
> > Module from the subject is absent in the debian trixie default kernel.
> >
> > It was presented in all debian distribution default kernels before.
> >
> > For example it was in debian bookworm and in more old debian
> distributions.
> > (before dist-upgrade)
> > $ grep -i CONFIG_MD_LINEAR /boot/config-6.1.0-37-amd64
> > CONFIG_MD_LINEAR=m
> >
> > But it is absent in debian trixie default kernel (6.12.38+deb13-amd64):
> > (after dist-upgrade)
> > $ grep -i MD_LINEAR /boot/config-$(uname -r)
> > # CONFIG_MD_LINEAR is not set
> >
> > Could you bring it back please?
> >
> > I realize that I can compile it, but I don't want to do it each time I
> > need to upgrade the kernel version.
> >
> > I am trying to use Debian GNU/Linux 13, kernel 6.12.38+deb13-amd64 and
> > libc6 2.41-12.
>
> MD_LINEAR was marked as deprecated for a long time and then removed in
> 6.8-rc1 with 849d18e27be9 ("md: Remove deprecated CONFIG_MD_LINEAR")
> and then later due to people with use cases needing it, reintroduce
> (at least temporarily for a couple of releases) with 6.14-rc1 (and
> backported to 6.13.3 and 6.12.14), with 127186cfb184 ("md: reintroduce
> md-linear").
>
> Cf. https://git.kernel.org/linus/127186cfb184eaccdfe948e6da66940cfa03efc5
>
> Now, can you briefly describe the use case you have which cannot be
> covered by switching to dm-linear?
>
>
> https://www.kernel.org/doc/html/latest/admin-guide/device-mapper/linear.html
>
> Thanks already,
>
> Regards,
> Salvatore
>
