I've testing this with the -proposed zfstools-linux 0.6.5.6-0ubuntu17 with 5 separate reboots and the zfs mounts work on each boot now, where as without the fix they didn't mount. So it looks fixed to me.
** Tags added: verification-done -- 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/1614789 Title: zfs.target should not require zfs-share.service Status in zfs-linux package in Ubuntu: In Progress Status in zfs-linux source package in Xenial: Fix Committed Bug description: == SRU Xenial == [Justification] Currently package zfsutils-linux contains systemd target file /lib/systemd/system/zfs.target that specifies following dependencies: Requires=zfs-mount.service Requires=zfs-share.service Wants=zed.service zfs-share.service is not essential in setups where file sharing is not used, or when it is configured without the use of the zfs utility. The user may therefore choose to mask this service. However, doing so has an unexpected and confusing effect, preventing zfs from starting on boot at all. This is because zfs.target is the only zfs-related unit that is wanted by multi-user.target, and if one of its required services is masked, zfs.target is skipped, together with zfs- mount.service. A solution is to replace "Requires=zfs-share.service" with "Wants=zfs-share.service". [Testcase] Steps to reproduce: systemctl mask zfs-share.service reboot Expected results: Module zfs is loaded zfs-mount.service is active and ZFS filesystems are mounted ZFS filesystems are not shared Observed results: Module zfs is not loaded ZFS filesystems are not mounted zpool status produces an error: "The ZFS modules are not loaded. Try running '/sbin/modprobe zfs' as root to load them." With the fix, the modules are loaded and zfs filesystems are mounted [Fix] A solution is to replace "Requires=zfs-share.service" with "Wants=zfs-share.service". [Regression Potential] Minimal, this affects the start up of a service that should be starting and currently isn't. Limited to just this specific scenario. --------------------- $ lsb_release -rd Description: Ubuntu 16.04.1 LTS Release: 16.04 $ apt-cache policy zfsutils-linux zfsutils-linux: Installed: 0.6.5.6-0ubuntu10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1614789/+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
