[How-to] resize FreePBX disk on Google Compute Engine

I was running out of space on my GCP hosted FreePBX and decided to add additional GBs

Step-by-step guide

Google Cloud Platform >> Compute Engine >> Snapshots >> Create a snapshot:
1. Source disk (your FreePBX disk).
Google Cloud Platform >> Compute Engine >> Disks >> Create a disk:
1. Source: select the snapshot created.
2. Size: Pick the desired new disk size.
3. The new size will not be reflected in the GUI.
SSH into your VM (I logged as a user then sudo -i to have root access.)
1. df -h
2. fdisk /dev/sda
  Command (m for help): p
3. Command (m for help): d
  Partition number (1-4): 2
4. Command (m for help): n
5. Select (default p): p
  Partition number (2-4, default 2): 2
6. Command (m for help): t
  Partition number (1,2, default 2): 2
  Hex code (type L to list all codes): 8e
7. Command (m for help): p
  Command (m for help): w
8. reboot
9. pvresize /dev/sda2
10. lvresize /dev/mapper/SangomaVG-root /dev/sda2
11. xfs_growfs /dev/mapper/SangomaVG-root
12. Finally check the changes: df -h and in the FreePBX GUI