Comment 5 for bug 1837214

Oh no that doesn't help, because get_device_paths_from_storage_config doesn't return things that have preserve set on them. I think this comes down to the confusion we've talked about before that preserve: true should mean the thing itself is preserved, but curtin interprets it (sometimes, at least) as that the data on the thing should be preserved as well.

I think this will have to be release noted for 18.04.3 as well.