[PATCH] nvme: avoid connecting to the same subsystem from the same path gain.

[Guan Junxiong]

On 2017/4/24 22:58, Christoph Hellwig wrote:
> On Mon, Apr 24, 2017 at 09:26:57PM +0800, Guan Junxiong wrote:
>> From: Junxiong Guan <guanjunxiong at huawei.com>
>>
>> Current code has the defect that we will get more /dev/nvme#n#
>> generated in the /dev node if we execute the same connect command
>> with nvme-cli tools more than once.
> 
> That's not a bug, it's a a feature.
> 
> .
Hi ,Christoph:
   What's the benefits of this feature? If we execute the following cmd
10 times, it will generate 10 character and at least 20 block devices.

   nvme connect -r rdma -a 192.168.2.1 -n tgtnqn -q hostnqn
   10 times repeating, then list nvme devices:
   nvme list
   we get a flood of nvme devices now.