Did 录 or 彔 look like some wooden object being carved? Was it originally a knife chipping something which became 録 as in recording events on a wooden object? It also seems to resemble a knife stripping and peeling away outer wooden layers like in 剥 (which btw does not sound anything like 录!).
However, I've seen sources like in http://qiyuan.chaziwang.com/etymology-3605.html say that it's a bag with water dripping below and ultimately became 禄, though I'm not even sure how does a dripping bag end up meaning as blessing. What is the story behind this character?