apt-get install nvme-cli

• character device /dev/nvme0 - is a NVME controller
• block device /dev/nvme0n1 - is a NVME storage namepsace.

lsblk

NAME                     MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
nvme0n1                  259:0    0 465,8G  0 disk  

nvme-cli

nvme list
nvme smart-log /dev/nvme0