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We need this to fix the zfs sysext. Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>
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No need to prod it if the sysext doesn't include any systemd units. Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>
This fixes the zfs sysext, which tried to delay udevd until after the sysext is merged, but that recently broke. We probably can't order things that way round any more. Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>
A new systemd unit is needed for this because the one that systemd ships is only suitable for use at boot time. Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>
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🔵 Needs a closer look
The boot-time systemd-sysext.service merge needs validation beyond bootengine’s --root merge, but missing upstream unit definitions leave the interaction between the tmpfiles helper’s default dependencies and the backport’s synchronous job wait unresolved.
No open issues 🎉
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Review effort: Balanced
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The zfs sysext tried to delay udevd until after the sysext is merged, but that recently broke. We probably can't order things that way round any more. This change triggers udev when the sysext is merged instead, which is better anyway. I had to backport the
EXTENSION_RESTART_UNITSfrom systemd 262 to do this.I also made it so that:
EXTENSION_RELOAD_MANAGERis only added when the sysext includes systemd units.See below for a detailed discussion between myself and Copilot on the best approach to take here.
How to use
With a second disk attached, manually add the zfs sysext, reboot, verify that it doesn't hang like before, create the zpool, reboot again, and check that it loaded the zfs kernel module. You can also (un)merge the sysext while checking for activity in
systemctl status systemd-udev-trigger.service.Testing done
I've manually done the above. I'll kick off Jenkins from here.
changelog/directory (user-facing change, bug fix, security fix, update) -- (it wasn't broken in a release)/bootand/usrsize, packages, list files for any missing binaries, kernel modules, config files, kernel modules, etc.