Re: [PATCH] nvme: remove multipath module parameter

[Hannes Reinecke]

On 3/6/25 01:03, Christoph Hellwig wrote:
> On Wed, Mar 05, 2025 at 04:57:44PM -0700, Keith Busch wrote:
> > > > Obviously he's not talking about multiported PCIe.
> > >
> > > Why is that obvious?
> >
> > No one here would think a multiported device *wouldn't* report CMIC.
>
> I hopes so.
>
> > The
> > fact Hannes thinks that's a questionable feature for his device gives
> > away that it is single ported.
>
> Well, his quote reads like he doesn't know about multiport PCIe devices.
> But maybe he just meant to say "despite being single-ported"
Single ported.
There is a range of Samsung NVMe where one is a normal, single ported,
NVMe, and one with a nearly identical model number reporting CMIC.

Causing _quite_ a lot of confusion with the customer (and L3) when
used under MD, as for the first hotplug works, for the second ... not so 
much.

Cheers,

Hannes
--
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@xxxxxxx                                +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
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