Resize disk for container

I have a container for home assistant and want to add more storage. Where do I find the disk it’s using? I have a container that I imported from some previous version of TrueNAS and it has a root disk (10GB), and a blaze_haos disk.

In my volumes dialog, I see the volume but it has unknown size, was created in the year 0004. I don’t know where that volume is actually stored on my system and I don’t see a way to resize it.

Do I need to make a new volume and then clone the content of my existing drive?

The docs for container (sorry, can’t link to it) says there should be some way to add a dataset as a drive but I don’t see that option. Is that expected?

I found the answer in t/how-to-increase-zvol-for-an-instance/45995. It requires using the CLI it seems.