Re: [PATCH 0/2] nvme: handle partially unique NID value

[Christoph Hellwig <hch@lst.de>]

On Mon, Apr 14, 2025 at 11:09:57AM +0200, hare@kernel.org wrote:
> From: Hannes Reinecke <hare@kernel.org>
> 
> Hi all,
> 
> we have encountered a customer issue where the NID values for additional
> namespaces on the same device are not unique in all cases; the NGUID is,
> but the EUI64 is not. Problem is that prior to commit e2724cb9f0c4 there
> devices worked without a problem, but after that all NIDs are blanked out.
> This results in udev not creating persistent device links anymore and the
> system failing to boot.

These devices are so broken that we absolutely should not support them
You've also received that feedback both in person from me, from Daniel
and from the nvme technical working group.  I'm not sure why you insist
resending it instead of telling the OEM that specifically requested this
spec violating behavior from their SSD vendor to stop doing those
broken thing in the many months you have known of this gravely incorrect
indefensible behavior.