'modprobe nvme_core multipath=N' crashes in face of multipath fabric

[Mike Snitzer]

On Wed, Apr 11 2018 at  9:45am -0400,
Keith Busch <keith.busch at intel.com> wrote:

> On Tue, Apr 10, 2018 at 04:49:53PM -0400, Mike Snitzer wrote:
> > This isn't new since the 4.17 merge or anything, I first noticed this
> > issue existed while using a 4.16-rc4 kernel.
> > 
> > modprobe nvme_core multipath=N
> 
> Thanks for the notice.
> 
> There is definitely a bug here when CONFIG_NVME_MULTIPATH=y but nvme_core
> multipath is disabled in the presence of shared namespaces. I think we'd
> need each namespace to get a different "head" out of the subsystem in
> this case, but it may take a moment for me to detangle this.

No problem, it certainly isn't something I could tackle any quicker ;)

Thanks for looking to resolve this though.