[PATCH] nvme-rdma: fix crash for no IO queues

[Keith Busch]

On Wed, Mar 03, 2021 at 10:27:01AM +0800, Chao Leng wrote:
> On 2021/3/3 2:24, Keith Busch wrote:
> > We can continue to administrate a controller that didn't create IO
> > queues, but the controller must provide a response to all commands. If
> > it doesn't, the controller will either be reset or abandoned. This
> > should be the same behavior for any transport, though; there's nothing
> > special about PCIe for that.
> Though I don't see any useful scenarios for nvme over fabric now,
> Reserved for future possibilities may be a better choice.

The admin queue may be the only way for a user to retrieve useful
information on the malfunctioning controller. The telemetry log isn't
unique to PCIe.