Restrict 'nvme list' to disks, i.e. exclude partitions

[amluto]

I used to see:

Node             Model                Version  Namepace Usage                      Format           FW Rev  
---------------- -------------------- -------- -------- -------------------------- ---------------- --------
/dev/nvme0n1     Samsung SSD 950 PRO  1.1      1         73.12  GB / 512.11  GB    512   B +  0 B   1B0QBXX7
/dev/nvme0n1p1   Samsung SSD 950 PRO  1.1      1         73.12  GB / 512.11  GB    512   B +  0 B   1B0QBXX7
/dev/nvme0n1p2   Samsung SSD 950 PRO  1.1      1         73.12  GB / 512.11  GB    512   B +  0 B   1B0QBXX7
/dev/nvme0n1p3   Samsung SSD 950 PRO  1.1      1         73.12  GB / 512.11  GB    512   B +  0 B   1B0QBXX7

Now I see:

Node             Model                Version  Namepace Usage                      Format           FW Rev  
---------------- -------------------- -------- -------- -------------------------- ---------------- --------
/dev/nvme0n1     Samsung SSD 950 PRO  1.1      1         73.12  GB / 512.11  GB    512   B +  0 B   1B0QBXX7

I think it would be even better to enumerate all nvme admin devices and then list the namespaces for each device, but this is probably a decent start toward improving 'nvme list'.

[keithbusch]

Yeah, we can do better with the table output. Similar to how partitions used to be displayed, controller information is also duplicated with multi-namespace devices still.

[sbates130272]

Thanks for this. Yes a cleanup here would be good so if you can please send those 'improvements' ;-)