[Service] ExecStart= # /home is actually in /var/home so the latter command should catch it #ExecStart=-duperemove -rdhq --hashfile=/root/home.hash /home ExecStart=-duperemove -rdhq --hashfile=/root/var.hash /var ExecStartPre= # Same filesystem although different subvolume, so this should work? ExecStartPre=-btrfs balance start -dusage=25 -dlimit=10 -musage=25 -mlimit=10 /var ExecStartPost=-btrfs balance start -dusage=50 /var