Resizing and moving an encrypted LVM volume

I use a LUKS-encrypted LVM setup for my laptop. Within the encrypted volume I have partitions for &#x2F; and &#x2F;home and I guessed the sizes wrong, so I needed to change them. I did various reading, and even resized some filesystems and partitions, before I discovered the answer that made it all very easy for me. Reboot into an Ubuntu live USB, do sudo apt install partitionmanager and then…