[Bug Report] nvme-cli commands fails to open head disk node and print error

[Nilay Shroff]

On 3/28/24 14:15, Daniel Wagner wrote:
> On Thu, Mar 28, 2024 at 12:00:07PM +0530, Nilay Shroff wrote:
>> From the above output it's evident that nvme-cli attempts to open the disk node /dev/nvme0n3
>> however that entry doesn't exist. Apparently, on 6.9-rc1 kernel though head disk node /dev/nvme0n3
>> doesn't exit, the relevant entries /sys/block/nvme0c0n3 and /sys/block/nvme0n3 are present. 
> 
> I assume you are using not latest version of nvme-cli/libnvme. The
> latest version does not try to open any block devices when scanning the
> sysfs topology.
> 
> What does `nvme version` say?
> 
yes you are correct, my nvme version was not latest:

# nvme --version 
nvme version 2.6 (git 2.6)
libnvme version 1.6 (git 1.6)

I have just upgraded to the latest version 2.8 and I don't see this issue.
I see that newer version of nvme-cli doesn't need to open head disk node if
kernel version is >= 6.8.

Thanks,
--Nilay