Check the following things..
1. Make sure the UIDs and GIDs are same across the nodes. 2. Try creating some files on the other nodes (touch, rm) 3. If nothing works trace the cluvfy. You can trace this by setting the trace variable SRVM_TRACE to true.
-- Best Regards, K Gopalakrishnan Co-Author: Oracle Wait Interface, Oracle Press 2004 http://www.amazon.com/exec/obidos/tg/detail/-/007222729X/
Coming Soon... Oracle RAC Handbook, Oracle Press 2006 http://www.amazon.com/gp/product/007146509X/