[Unit]
Description=Truncate log files when no space left on device
DefaultDependencies=no
After=local-fs.target

[Service]
Type=oneshot
ExecStart=/bin/sh -c "/usr/bin/log-guardian&"
ExecStop=/usr/bin/log-guardian --quit
RemainAfterExit=yes

[Install]
WantedBy=sysinit.target