coreboot systems are not supported
I don't know if this affects all coreboot systems or only some, but we receive quite a few "Resizing system partition failed" reports, because our 1st boot partitioning hook can't do its job: $FSUUID is unset, probably because the boot medium is an ISO, and not a USB image. Skipping partitioning.
So automatic upgrades and creating Persistent Storage won't work.
It seems we might need to ship a GRUB compiled for coreboot to solve that.
For now I'm recording this as a known issue and "great patches welcome". We'll see if we ever want, and can afford, to prioritize this any higher.
Edited by intrigeri