Comment 10 for bug 1847628

> Or are you saying, that zfs zvol swap shouldn't be created either,
> since that is known to cause lockups?

That is correct. As per the thread at the attached github zfsonlinux bug report, zfs zvol swap causes system freezes for minutes at a time, and under enough memory pressure will lock up the system completely.

Ubiquity installer should put swap on it's own partition, not a zvol.