We ran into a situation where we could not unmount an NFS datastore due to open file handles.
This turned out to be due to the open, but unused swapfiles for 5 VMs
If you run into this situation, there are a few methods to relocate the swap files and unmount the datastore - detailed here:
http://www.vmadmin.info/2012/01/3-vswp-relocation-methods.html
thanks
VCP5 VSP5 VTSP5 vExpert
http://vmadmin.info
