[PATCH 2/2] nvme: extend show-topology command to add support for multipath

[Daniel Wagner]

Hi Nilay,

On Fri, Jul 04, 2025 at 07:19:54PM +0530, Nilay Shroff wrote:
> $ nvme show-topology -r multipath
> 
> nvme-subsys2 - NQN=nvmet_subsystem
>                hostnqn=nqn.2014-08.org.nvmexpress:uuid:12b49f6e-0276-4746-b10c-56815b7e6dc2
>                iopolicy=numa
> 
>           _ _ _<head-node>
>          /              _ _ _ <ana-state>
>         /              /      _ _ _ <numa-node-list>
>        /              /      /  _ _ _<queue-depth>
>       |              /      /  /
>  +- nvme2n1 (ns 1)  /      /  /
>  \                 |      |  |
>   +- nvme2c2n1 optimized 1,2 0 nvme2 tcp traddr=127.0.0.2,trsvcid=4460,src_addr=127.0.0.1 live
>   +- nvme2c3n1 optimized 3,4 0 nvme3 tcp traddr=127.0.0.3,trsvcid=4460,src_addr=127.0.0.1 live
> 
> Please note that the headers shown above (e.g., <numa-node-list>,
> <ana-state>, <hed-node>, and <queue-depth>) are included for clarity
> only and are not part of the actual output.

I do like the annotation what the numbers mean. Could you also add those
annotation to the output?

Rest looks good from a quick look.

Thanks,
Daniel