Can't unmount or initialize swap partition

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1

I’m folling this guide for adding a swap partition, so my laptop can hibernate.
My issue is, i cant initialize the swap partition with mkswap, the outputs say its mounted and unmounted at the same time, guess this is schrödingers swapspace.
This is the console output:

❯ lsblk
nvme0n1     259:0    0 953.9G  0 disk 
├─nvme0n1p1 259:1    0   200M  0 part /boot/efi
├─nvme0n1p2 259:2    0    16M  0 part 
├─nvme0n1p3 259:3    0 195.3G  0 part 
├─nvme0n1p4 259:4    0 691.4G  0 part /
└─nvme0n1p5 259:5    0  66.9G  0 part [SWAP]

❯ sudo mkswap /dev/nvme0n1p5
mkswap: error: /dev/nvme0n1p5 is mounted; will not make swapspace

❯ sudo umount /dev/nvme0n1p5
umount: /dev/nvme0n1p5: not mounted.

❯ sudo blkid /dev/nvme0n1p5
/dev/nvme0n1p5: LABEL="/swap" UUID="" TYPE="swap" PARTLABEL="swap" PARTUUID=""

How do I continue to setup the swap partition so i can enable hibernation on my laptop?
Thanks in advance for any help!

Mod edit:- Topic title corrected spelling.

2

sudo swapoff /dev/nvme0n1p5

After that you can use mkswap.

EDIT: If it’s the only swap you can use sudo swapoff -a

3

Looks to me it is already used as your swap.

4

That’s right; I assumed he wanted to split up the swap area since he mentioned “adding.” I didn’t question that.

5

Thanks for the tips, i got it to work.
This was the state after creating the swap partition, there wasnt one before. I guess it did it automatically after setting up the swap partition from a live iso.
I thought hibernate wasnt working bc the swap partition wasn’t setup properly, instead the issue was the missing resume Hook in mkinitcpio.conf