Disk One: undefined on admin console

I just installed membase 1.7.1 on a second red hat machine and while setting up using the admin console, asked it to join an existing membase server which was installed some 50 days back.

After joining server2 to server1 and doing a "rebalance", I checked the "server nodes" under "Manage" section of admin console on server2. It displays "memory cache" and "disk storage" for both servers in the cluster.

The "disk storage" for server1 is displayed in-correctly on server2 admin console. A negative number is shown as FREE space and a zero for TOTAL space, however, all values are displayed correctly on server1 admin console.

What could be wrong with server2 admin console?