>Ashok (or anyone out there), > >Is there a universal way to tell (from a test script) whether or not the >particular system you are running allows cpu0 to be off-lined (other >than to try it) ? I think if a certain CPU cannot be removed we will have no corresponding online control file. This is true for ia64, for i386/x86_64 we did that just recently when the bug trying to online a already online cpu was found. In general if the "online" control file is missing, it means that cpu is not offlineable.