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nixpkgs/nixos/tests/systemd-timesyncd.nix
Andreas Rammhold 024a383d64
nixos/systemd: migrate systemd-timesync state when required
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.
2019-06-03 15:05:19 +02:00

53 lines
2 KiB
Nix

# Regression test for systemd-timesync having moved the state directory without
# upstream providing a migration path. https://github.com/systemd/systemd/issues/12131
import ./make-test.nix (let
common = { lib, ... }: {
# override the `false` value from the qemu-vm base profile
services.timesyncd.enable = lib.mkForce true;
};
mkVM = conf: { imports = [ conf common ]; };
in {
name = "systemd-timesyncd";
nodes = {
current = mkVM {};
pre1909 = mkVM ({lib, ... }: with lib; {
# create the path that should be migrated by our activation script when
# upgrading to a newer nixos version
system.stateVersion = "19.03";
system.activationScripts.simulate-old-timesync-state-dir = mkBefore ''
rm -f /var/lib/systemd/timesync
mkdir -p /var/lib/systemd /var/lib/private/systemd/timesync
ln -s /var/lib/private/systemd/timesync /var/lib/systemd/timesync
chown systemd-timesync: /var/lib/private/systemd/timesync
'';
});
};
testScript = ''
startAll;
$current->succeed('systemctl status systemd-timesyncd.service');
# on a new install with a recent systemd there should not be any
# leftovers from the dynamic user mess
$current->succeed('test -e /var/lib/systemd/timesync');
$current->succeed('test ! -L /var/lib/systemd/timesync');
# timesyncd should be running on the upgrading system since we fixed the
# file bits in the activation script
$pre1909->succeed('systemctl status systemd-timesyncd.service');
# the path should be gone after the migration
$pre1909->succeed('test ! -e /var/lib/private/systemd/timesync');
# and the new path should no longer be a symlink
$pre1909->succeed('test -e /var/lib/systemd/timesync');
$pre1909->succeed('test ! -L /var/lib/systemd/timesync');
# after a restart things should still work and not fail in the activation
# scripts and cause the boot to fail..
$pre1909->shutdown;
$pre1909->start;
$pre1909->succeed('systemctl status systemd-timesyncd.service');
'';
})