swapon: /swapfile: swapon failed: Function not implemented When enabling swap

Question

I tried to enable swap according to this website: https://linuxize.com/post/create-a-linux-swap-file/

When I ran sudo swapon /swapfile, it returned this error:

swapon: /swapfile: swapon failed: Function not implemented

Answer 1

It looks like CONFIG_SWAP is not enabled in the kernel you are using. Please enable it and try.