otherwise systemd does umount /run et.al.
[Service]
Type=oneshot
EnvironmentFile=/run/initramfs/switch-root.conf
-ExecStart=/usr/bin/systemctl switch-root ${NEWROOT} ${NEWINIT}
+# we have to use "--force" here, otherwise systemd would umount /run
+ExecStart=/usr/bin/systemctl --force switch-root ${NEWROOT} ${NEWINIT}
ExecStopPost=-/usr/bin/systemctl stop systemd-journald.service
+ExecStopPost=-/bin/rm -f /run/initramfs/switch-root.conf
StandardInput=null
StandardOutput=null
StandardError=null