>changing the LVM layout from one of the cluster nodes will not be noticed by the other nodes, until a reboot.
I get "changing the LVM layout" as modifying the size of VG/LV ? did I get you properly ?

>If you can live with that (i.e. because you use a single OCFS2 partition on the shared media, and won't change the partitioning), no cLVM is needed.
Got it ;-).

Thanks a lot, you helped me.