Vmware vmdk file converting problem

Hi. I have test.vmdk workstation file. I wand convert for esxserver 4.0 . I tryed it by vmkfstools. i writed like that

vmkfstools -i test.vmdk edomain.vmdk

But i get the error 

[root@ESX Edomain]# vmkfstools -i test.vmdk edomain.vmdk Destination disk format: VMFS zeroedthick Failed to open ‘test.vmdk’: Broken pipe (2097161).

The directory is right

Then i tried to do this instruction

http://communities.vmware.com/thread/227143;jsessionid=2DA3CAB1E4F583CEC8887DDB6144C151?tstart=0

But the problem not resolved. The system cannot recognized the file after operation vmware-vdiskmanager. Please help