Sorry, you were right about the meaning of import/export and rmdir, but my excuse is, that it has been very early in the morning.
However I have the same update problem on an ext4 installation of Ubuntu 19.10 on the same laptop. It gives the same error on two zfs modules, but of course without the zfs-initramfs module. So that has nothing to do with, how that system has been booted or which "How-To" has been used to boot from ZFS. It is just a very standard zfs installation on ext4 with two datapools and that is not an unofficial, experimental setup. For proof see the results on an update this morning in the file zfs- ext4. I purged zfsutils-linux and reinstalled it again on the ext4 system. After rebooting and importing the datapools the first time after the purge again, everything worked fine with the new version 12 of zfs. Unfortunately I can't use that trick, when I boot from ZFS. I think that proofs, that there is nothing wrong with the datapools itself or ZFS itself. So both version 11 and 12 of ZFS works fine, but you have a faulty update process for standard zfs and the same fault occurs on my version of "Boot from ZFS". ** Attachment added: "zfs-ext4" https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1846424/+attachment/5295464/+files/zfs-ext4 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1846424 Title: 19.10 ZFS Update failed on 2019-10-02 Status in zfs-linux package in Ubuntu: Invalid Bug description: On all my systems the update from zfs-initrams_0.8.1-1ubuntu12_amd64.deb failed the same is true for zfs-zed and zfsutils-linux. The system still runs on 0.8.1-1ubuntu11_amd64. The first error message was about a failing mount and at the end it announced that all 3 modules were not updated. I have the error on Xubuntu 19.10, Ubuntu Mate 19.10 on my laptop i5-2520M and in a VBox VM on a Ryzen 3 2200G with Ubuntu 19.10. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1846424/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp