Incorrect volume size

[NdK73]

Seems "Gluster volume size" metric is just "Total bricks size / replica count". That's incorrect when you have a "replica 3 arbiter 1" volume. Arbiters should be subtracted from replica count.
IIUC the prototype for the item should be changed from
last(//gluster.bricks.size[{#NAME}]) / last(//gluster.volume.replicaCount[{#NAME}])
to account for the arbiters, but I can't find a way to do it (excepr fixing it with a "-1", but in that case it will be wrong when there are no arbiters...).

[Lelik13a]

I think in this case you can use macros for volume multiplayer. Or think about jscript processing.