Looks like the other server I was talking about was installed with ubuntu-18.04-server-amd64.iso, not live-server, which is why it was sane - /var/log/installer/partman exists and the other logs show debian-installer was used.
The swapfile size is configured in https://github.com/canonical/curtin/blob/master/curtin/swap.py which is a problem since I think the place to add a swap partition would be as an additional self.create_logical_volume after this one https://github.com/mwhudson/subiquity/blob/dc66caa60130dff8420d3161e77d1ef39b3587cf/subiquity/controllers/filesystem.py#L770
Looks like the other server I was talking about was installed with ubuntu- 18.04-server- amd64.iso, not live-server, which is why it was sane - /var/log/ installer/ partman exists and the other logs show debian-installer was used.
The swapfile size is configured in https:/ /github. com/canonical/ curtin/ blob/master/ curtin/ swap.py which is a problem since I think the place to add a swap partition would be as an additional self.create_ logical_ volume after this one https:/ /github. com/mwhudson/ subiquity/ blob/dc66caa601 30dff8420d3161e 77d1ef39b3587cf /subiquity/ controllers/ filesystem. py#L770