membase rebalance cli with --server-add does not appear to actually perform rebalance

So installed build 46 on a couple of EC2 instances. And then attempted to use the cli to create a cluster by using the rebalance command to add one node to another and the perform the rebalance.

When I executed the rebalance command I got the following
[root@domU-12-31-36-00-45-D2 ~]# /opt/NorthScale/1.6.0a/bin/cli/membase rebalance -c $S2:8080 --server-add=$S3:8080
SUCCESS: server added..
SUCCESS: rebalance started..

But when I look at the vbucket list, all 16 buckets where still in on the original node and did not appear to be transitioning , which made me think that the rebalance was not happening

[root@domU-12-31-36-00-45-D2 ~]# /opt/NorthScale/bin/ep_engine/management/vbucketctl.py $S2:11210 list
vbucket 0 active
vbucket 1 active
vbucket 10 active
vbucket 11 active
vbucket 12 active
vbucket 13 active
vbucket 14 active
vbucket 15 active
vbucket 2 active
vbucket 3 active
vbucket 4 active
vbucket 5 active
vbucket 6 active
vbucket 7 active
vbucket 8 active
vbucket 9 active

When I look at the WebConsole, it should that a rebalance was pending, but no progress appear to be happening.

http://skitch.com/eric.d.lambert/dehha/skitch

When I pressed the rebalance button in the UI, the rebalance appeared to start (the progress meters were displayed) and then very quickly after, the rebalance completed. After executing the rebalance in the UI vbucketctl does show that buckets were moved

[root@domU-12-31-36-00-45-D2 ~]# /opt/NorthScale/bin/ep_engine/management/vbucketctl.py $S2:11210 list
vbucket 0 replica
vbucket 1 replica
vbucket 10 active
vbucket 11 active
vbucket 12 active
vbucket 13 active
vbucket 14 active
vbucket 15 active
vbucket 2 replica
vbucket 3 replica
vbucket 4 replica
vbucket 5 replica
vbucket 6 replica
vbucket 7 replica
vbucket 8 active
vbucket 9 active
[root@domU-12-31-36-00-45-D2 ~]# /opt/NorthScale/bin/ep_engine/management/vbucketctl.py $S3:11210 list
vbucket 0 active
vbucket 1 active
vbucket 10 replica
vbucket 11 replica
vbucket 12 replica
vbucket 13 replica
vbucket 14 replica
vbucket 15 replica
vbucket 2 active
vbucket 3 active
vbucket 4 active
vbucket 5 active
vbucket 6 active
vbucket 7 active
vbucket 8 replica
vbucket 9 replica