Use nvme disk for cache

[muddy]

You are right, it was my mistake, I didn’t describe everything that was necessary.

My main system is Proxmox. I have a free disk on my computer, which I've divided into three partitions. https://ibb.co/cXsQjwz6  I'd like to use one of the partitions as the location for the /var/cache/jellyfin cache directory. I tried mounting the partition in place of the cache directory.
Maybe I'm doing it wrong to mount the partition this way?

root@jellyfin:~# sudo mount -t xfs -o defaults,noatime,nodiratime /dev/nvme0n1p2 /var/cache/jellyfin
mount: /var/cache/jellyfin: permission denied.
      dmesg(1) may have more information after failed mount system call.

That kind of response normally comes from the kernel.
Did you format the drive with mkfs.xfs  first?
Can you do a simple test like mkdir /mnt/disk and mount /dev/nvme0n1p2 /mnt/disk to see if that works?
Check if you have SELinux, App Armor etc running that may be blocking it
Also run lsblk, df and blkid /dev/nvme0n1p2 to verify your system can see/use the block device and you have a UUID for the partition.