MDM ffff88027976c000 received bad status 28(BUSY)

Greetings,

I just did a fresh install of ScaleIO 1.32.2 on 4x RHEL 6 servers (with kernel 2.6.32-573.7.1.el6.x86_64) in the lab.  Two of the servers are giving the following message in /var/log/messages:

" kernel: ScaleIO R1_32:MDM ffff88027976c000 received bad status 28(BUSY)".  A quick google did not show anything.

I rebooted both of the nodes showing this message, and the message is no longer generated on one of the nodes.  However, the second server is still showing them.  These servers are identical in every way (same CPU, NICs, RAM, drives installed, etc).  In fact, the same O/S install was cloned to all 4 servers.

Any ideas/pointers?