[one-users] Live migrate failed

[Jeff]

Hi, all. I am testing the live migrate function of opennebula. But it 
seemed that it didn't work on my machine.So I checked the vm log and 
found this error information :

Tue Apr 12 14:56:07 2011 [LCM][I]: New VM state is MIGRATE
Tue Apr 12 14:56:07 2011 [VMM][I]: Command execution fail: 'if [ -x 
"/var/tmp/one/vmm/kvm/migrate" ]; then /var/tmp/one/vmm/kvm/migrate 
one-67 cloudlabnc1; else                              exit 42; fi'
Tue Apr 12 14:56:07 2011 [VMM][I]: STDERR follows.
Tue Apr 12 14:56:07 2011 [VMM][I]: error: Cannot access CA certificate 
'/etc/pki/CA/cacert.pem': No such file or directory
Tue Apr 12 14:56:07 2011 [VMM][I]: ExitCode: 1
Tue Apr 12 14:56:07 2011 [VMM][E]: Error live-migrating VM, error: 
Cannot access CA certificate '/etc/pki/CA/cacert.pem': No such file or 
directory
Tue Apr 12 14:56:08 2011 [LCM][I]: Fail to life migrate VM. Assuming 
that the VM is still RUNNING (will poll VM).
Tue Apr 12 14:56:08 2011 [VMM][D]: Monitor Information:

Could anyone please give me any advice ?
Best Regards
Jeff