[PATCH V3 0/3] Ensure ordered namespace registration during async scan

[Maurizio Lombardi]

Hello Keith,

On Mon Mar 2, 2026 at 6:12 PM CET, Keith Busch wrote:
> On Mon, Mar 02, 2026 at 08:16:19AM +0100, Hannes Reinecke wrote:
>> I really would like to go with the nsid based solution from Keith.
>> That would avoid quite some cumbersome code here.
>
> I've seen various documentation that assumes the current naming
> indicates the nsid, so the scheme follows at least some people's
> expectations. I don't know if we can make everyone happy here, though.
> :(
>
> I've fixed up most of the multipath races that get us closer to allowing
> nsid suffix, but there's one left: nvme_remove_head is called outside
> the subsys lock after detaching the head from the subsystem list. That
> could cause a subsequent add event to call nvme_alloc_ns() before the
> mpath side has completed del_gendisk() for the old nsid.

Did you manage to find a solution for this race?
I just wanted to check whether you had any patches ready for testing since
this discussion.

Thanks,
Maurizio