rrdtool create node-1.rrd --start `date +%s` --step=300 \
DS:getattr:COUNTER:600:0:U \
DS:access:COUNTER:600:0:U \
DS:read:COUNTER:600:0:U \
DS:write:COUNTER:600:0:U \
RRA:AVERAGE:0.5:1:2016 \
RRA:AVERAGE:0.5:288:31 \
RRA:AVERAGE:0.5:2016:52