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Somewhen between systemd v239 and v242 upstream decided to no longer run a few system services with `DyanmicUser=1` but failed to provide a migration path for all the state those services left behind. For the case of systemd-timesync the state has to be moved from /var/lib/private/systemd/timesync to /var/lib/systemd/timesync if /var/lib/systemd/timesync is currently a symlink. We only do this if the stateVersion is still below 19.09 to avoid starting to have an ever growing activation script for (then) ancient systemd migrations that are no longer required. See https://github.com/systemd/systemd/issues/12131 for details about the missing migration path and related discussion.
53 lines
2 KiB
Nix
53 lines
2 KiB
Nix
# Regression test for systemd-timesync having moved the state directory without
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# upstream providing a migration path. https://github.com/systemd/systemd/issues/12131
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import ./make-test.nix (let
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common = { lib, ... }: {
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# override the `false` value from the qemu-vm base profile
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services.timesyncd.enable = lib.mkForce true;
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};
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mkVM = conf: { imports = [ conf common ]; };
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in {
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name = "systemd-timesyncd";
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nodes = {
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current = mkVM {};
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pre1909 = mkVM ({lib, ... }: with lib; {
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# create the path that should be migrated by our activation script when
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# upgrading to a newer nixos version
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system.stateVersion = "19.03";
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system.activationScripts.simulate-old-timesync-state-dir = mkBefore ''
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rm -f /var/lib/systemd/timesync
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mkdir -p /var/lib/systemd /var/lib/private/systemd/timesync
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ln -s /var/lib/private/systemd/timesync /var/lib/systemd/timesync
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chown systemd-timesync: /var/lib/private/systemd/timesync
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'';
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});
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};
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testScript = ''
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startAll;
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$current->succeed('systemctl status systemd-timesyncd.service');
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# on a new install with a recent systemd there should not be any
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# leftovers from the dynamic user mess
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$current->succeed('test -e /var/lib/systemd/timesync');
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$current->succeed('test ! -L /var/lib/systemd/timesync');
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# timesyncd should be running on the upgrading system since we fixed the
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# file bits in the activation script
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$pre1909->succeed('systemctl status systemd-timesyncd.service');
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# the path should be gone after the migration
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$pre1909->succeed('test ! -e /var/lib/private/systemd/timesync');
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# and the new path should no longer be a symlink
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$pre1909->succeed('test -e /var/lib/systemd/timesync');
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$pre1909->succeed('test ! -L /var/lib/systemd/timesync');
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# after a restart things should still work and not fail in the activation
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# scripts and cause the boot to fail..
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$pre1909->shutdown;
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$pre1909->start;
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$pre1909->succeed('systemctl status systemd-timesyncd.service');
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'';
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})
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