Unable to resize vm volume

[JeffCT0216]

Hi there,

I followed the instructions in the readme and tried to increase the vm volume to 16G by:
dd if=/dev/null of="${VMCTLDIR}/ubuntu/disk.img" bs=1g count=0 seek=16

I can see that in my vm folder the disk.img size increase to 16G

total 3171224
-rw-r--r-- 1 ctsai staff 17179869184 Sep 13 10:51 disk.img
drwx------ 3 ctsai staff 96 Sep 12 15:00 screen
-rw-r--r-- 1 ctsai staff 13 Sep 7 11:17 0.ipaddr
-rw-r--r-- 1 ctsai staff 128 Sep 7 10:25 vm.conf
drwxr-xr-x 7 ctsai staff 224 Sep 7 10:20 ubuntu
-rw-r--r-- 1 ctsai staff 13 Jun 14 08:54 0.macaddr
-rw-r--r-- 1 ctsai staff 851 Jun 14 08:53 user.yaml
-rw-r--r-- 1 ctsai staff 27621838 Jun 14 08:52 initrd
-rw-r--r-- 1 ctsai staff 13672704 Jun 14 08:52 vmlinux

but when I start the vm I only see 1.4G storage:

Welcome to Ubuntu 20.04.4 LTS (GNU/Linux 5.4.0-117-generic x86_64)

• Documentation: https://help.ubuntu.com
• Management: https://landscape.canonical.com
• Support: https://ubuntu.com/advantage

System information as of Tue Sep 13 17:53:47 UTC 2022

System load: 0.05
Usage of /: 98.9% of 1.40GB
Memory usage: 9%
Swap usage: 0%
Processes: 109
Users logged in: 0
IPv4 address for enp0s1: 192.168.65.3
IPv6 address for enp0s1: fd73:e176:203:8e05:4c8c:42ff:fe46:31b8

=> / is using 98.9% of 1.40GB

0 updates can be applied immediately.

The list of available updates is more than a week old.
To check for new updates run: sudo apt update

Last login: Mon Sep 12 22:00:34 UTC 2022 on hvc0

Can anyone point me in the right direction here?
Thanks

[Yifan Gu]

If you resize the VM after the VM has been already booted, you'll need to manually resize the fs. Usually sudo resize2fs /dev/vda will do.

[JeffCT0216]

This worked for me, thanks a lot!