I've just noticed that a default install of Ubuntu 18.04 with LVM results in only 4GB of space allocated for the root partition, and the rest of the 500GB drive is left un-used. I find this goes against the principle of least surprise, I expected ubuntu to use the whole drive or to ask how much to use like 16.04 did.
Why wasn't it provisioned with more space? Is this a bug? I've googled but couldn't find anything other than this: Ubuntu Server 18.04 LVM out of space with improper default partitioning
However, that's a different question, as that question seeks to resolve the behavior by expanding the disk. I'm trying to determine whether the behavior I'm seeing is expected, a regression, or a bug.
It talks about how to fix it - and I have fixed it - but I don't understand why 18.04 defaults to such a small root partition with LVM?
Edit: I'm using the ubuntu-18.04.2-live-server-amd64 ISO.
Thanks in advance!