Comment 11 for bug 1843222

Note that I only can use the datapools after I exported and re-imported them again. But I have to do that on all boots, so I wrote a small script for it. I did not upgrade the datapool itself, because 2 of the 3 systems still run Ubuntu 19.04 one also from the zfs systems datapool and the other from ext4 on sdc5 with swap on sdc6.