Splitting large CFS cluster
I've been tasked with splitting are large CFS cluster (SLES11/SFS 5.1), no application service groups thankfully, just CFS sg's... I've identified where the splits can be made and the first task will be to take 2 nodes out of the large cluster and create a seperate cluster from them.
The question I have is whats the recommended way to remove nodes from the cluster. I'm happy with doing the gab/llt part.
Most docs state using the 'hagrp -modify' on cvm group for AutoStartList/SystemList, also cvm_clus for CVMNodeID and CFSMount / NodeList + hasys -delete etc..
However looking at the 'cfsmntadm/cfsdgadm delete' commands, they appear to do all the work instead ?
Not having a play cluster to test on I'd rather get some heads up from anyone who knows this for sure.