Adding an NFS mount for cold data, why doesn't Splunk start and locktest just hangs after configuring the colddb path for an index?

Hi, We are adding a new NFS mount that will hold our cold data. When we configure colddb path for an index and start splunk, it hangs on "Checking Indexes...". I then used the locktest program and it hangs as well. Here is the command:= from bin directory. export SPLUNK_DB="/splunkData/idx1/demo/coldddb/"; ./locktest I reviewed the Splunk system's requirement document as it relates to NFS and it seems we have the right settings (using "hard" mounts and 'attribute caching' is enabled. When I run command 'touch' it can create a file as splunk user with no problem. Splunk is creating 2 files in the colddb directory called 'test.xxx' when I run the locktest program. I also update system ulimits per Splunk recommendation. Any idea why Splunk is finding the nfs unsuitable?