---

ubuntu@ubuntu:~$ lsblk -o NAME,SIZE,FSTYPE,MOUNTPOINTS /dev/nvme0n1
NAME          SIZE FSTYPE MOUNTPOINTS
nvme0n1     476.9G        
├─nvme0n1p1   256M vfat   /mnt/lfs/boot/efi
├─nvme0n1p2    40G swap   [SWAP]
└─nvme0n1p3 436.7G ext4   /mnt/lfs
ubuntu@ubuntu:~$ swapon --show
NAME           TYPE      SIZE USED PRIO
/dev/nvme0n1p2 partition  40G   0B   -1