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

[Chao Leng]

On 2021/3/3 11:14, Keith Busch wrote:
> 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.
User can also directly visit target to get these information for
nvme over fabrics.
> .
>