@Lawrence, it seems the problem is when zfs-mount tries to mount /boot/grub it meets a directory with some content:
Aug 20 16:56:14 nautique zfs[163828]: cannot mount '/boot/grub': directory is not empty It could be that it was umount'ed before some command populated /boot/grub? But maybe there is more to it as `dmesg` has many such messages: zfs-mount-generator: boot-grub.mount already exists To recover from this you can probably simply move the content to some temporary directory, make sure nothing's left in /boot/grub, zfs mount it and then move the content back in. -- 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/1940718 Title: package zfsutils-linux 0.8.3-1ubuntu12.12 failed to install/upgrade: installed zfsutils-linux package post-installation script subprocess returned error exit status 1 Status in zfs-linux package in Ubuntu: Confirmed Bug description: system update failed ProblemType: Package DistroRelease: Ubuntu 20.04 Package: zfsutils-linux 0.8.3-1ubuntu12.12 ProcVersionSignature: Ubuntu 5.4.0-77.86-generic 5.4.119 Uname: Linux 5.4.0-77-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 CasperMD5CheckResult: skip Date: Fri Aug 20 16:56:14 2021 ErrorMessage: installed zfsutils-linux package post-installation script subprocess returned error exit status 1 Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2 PythonDetails: N/A RelatedPackageVersions: dpkg 1.19.7ubuntu3 apt 2.0.6 SourcePackage: zfs-linux Title: package zfsutils-linux 0.8.3-1ubuntu12.12 failed to install/upgrade: installed zfsutils-linux package post-installation script subprocess returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.logrotate.d.apport: 2021-07-05T13:03:06.049681 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1940718/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
