Expand size - snap/ubuntu/aws

Apologies - this may be a bit basic, but after a couple of hours of searching and no joy I could do with some help. I’ve got a Nextcloud installation on an AWS EC2 server that was installed via the snap (Ubuntu 16.04.6 LTS).

Space has become an issue so I’ve increased the attached volume up to 2.5T, but I’m struggling with getting that identified on the Nextcloud side. This is where my lack of knowledge kicks in.

Filesystem      Size  Used Avail Use% Mounted on
udev            1.9G     0  1.9G   0% /dev
tmpfs           390M  5.7M  384M   2% /run
/dev/nvme0n1p1  2.0T  1.9T   46G  98% /
tmpfs           2.0G     0  2.0G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           2.0G     0  2.0G   0% /sys/fs/cgroup
/dev/loop0       90M   90M     0 100% /snap/core/8039
/dev/loop1       18M   18M     0 100% /snap/amazon-ssm-agent/1455
/dev/loop2      218M  218M     0 100% /snap/nextcloud/16402
/dev/loop3       90M   90M     0 100% /snap/core/7917
/dev/loop4      212M  212M     0 100% /snap/nextcloud/16739
/dev/loop5       18M   18M     0 100% /snap/amazon-ssm-agent/1480
tmpfs           390M     0  390M   0% /run/user/1000

NAME        FSTYPE     SIZE MOUNTPOINT                  LABEL
loop0       squashfs  89.1M /snap/core/8039
loop1       squashfs    18M /snap/amazon-ssm-agent/1455
loop2       squashfs 217.6M /snap/nextcloud/16402
loop3       squashfs  89.1M /snap/core/7917
loop4       squashfs 211.7M /snap/nextcloud/16739
loop5       squashfs    18M /snap/amazon-ssm-agent/1480
nvme0n1                2.5T
└─nvme0n1p1 ext4         2T /                           cloudimg-rootfs

I’ve tried various combinations of google-suggested commands to increase the partition size and the file size, but I’m failing somewhere. My assumption was that I could increase partition size with

sudo parted /dev/nvme0n1p1 resizepart 1 2.5T

but I’m getting

Error: Partition doesn't exist.

Can anyone help with what I’m missing?

normally: sudo reboot will do the trick. if you didn’t change anything with cloud-init.

Thanks but no joy I’m afraid, and I’ve not touched cloud-init. Everything’s untouched since install.

so sudo reboot didn’t work?

Nope - didn’t work. It’s still reading exactly as above

do you have a aws support plan? -> open a ticket at aws.
or try: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/recognize-expanded-volume-linux.html

That’s it - thanks. Should have assumed aws instead of nextcloud!