Operation:
sudo vgs:ubuntu-vg 1 1 0 wz--n- 462.69g 362.69gdf -T /:/dev/mapper/ubuntu--vg-ubuntu--lv ext4 102626232 24338224 73028744 25% /sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lvsudo resize2fs /dev/ubuntu-vg/ubuntu-lv
Never did this before on an encrypted drive. Is this the proper procedure? Obviously a complete image back up is in order, however, are there any gotchas, caveats, pitfalls that I should be aware of before proceeding?


I saw in another comment your lsblk output and yes I see the LUKS partition spans the whole disk.
So yes, the commands you listed should be sufficient. It will extend the decrypted logical volume to use the remaining free space of your volume group.