ACK/cmt: [B/D/E] [PATCH 0/1] md raid0/linear doesn't show error state if an array member is removed and allows successful writes

[Guilherme G. Piccoli]

On Fri, Oct 18, 2019 at 2:03 AM Khaled Elmously
<khalid.elmously at canonical.com> wrote:
> [...]
> > * We ask hereby an exception from kernel team to have this backported to kernel
> > 4.15 *only in Bionic* and not in Xenial. The reason is that mdadm code changed
> > too much and we didn't want to introduce a potential regression in the Xenial
> > version from that tool, so we only backported the mdadm counter-part of this
> > patch to Bionic, Disco and Eoan - hence, we'd like to have a match in the kernel
> > backported versions.
> >
>
> We can do this, though as Klebers mentioned we prefer to keep the kernels as close as possible.
>
> After discussing with Jay and Andy, we can apply this patch to bionic and remove it in xenial/hwe - at least temporarily. The x/hwe revert may still be removed later if an alternative solution can be found.
>
> +1 for the patch itself, thanks
>
> Acked-by: Khalid Elmously <khalid.elmously at canonical.com>
>

Thanks a lot Khalid and Kleber! As per Kleber's question: the patch
does work without the counter-part in mdadm
Kleber, but it'll show a different message than intended in the "mdadm
--detail" command. The reason of my
request is the difficult backport due to old version of mdadm in Xenial.
If it's possible to carry the revert in Xenial/HWE for now, that would be great.

Then we could discuss with Foundations about alternatives in the mdadm
realm, like updating the package in
Xenial or backport more patches to bring the code needed by my patch.

Thanks,


Guilherme