Blackboard's back up.

What happened?  A utility we use to keep blackboard's records up to date 
  stopped running, and when I checked it out, the server was misbehaving 
in unexpected ways.  The server, though idle, would report 100% cpu 
usage for certain slices of time. 
(https://status.uvm.edu/ustat/bbprd1/cpu/cpu_14400.png)

I suspected that a restart of this virtual machine might be in order 
(bbprd1 is a xen guest), however it failed to shut down cleanly and 
needed to be destroyed.  After that, it wouldn't start, and it was 
apparent that the underlying xen host was the source of the problem. 
This problem also affected the other two xen hosts housing the rest of 
the cluster.

Everything's been restarted and that seems to have cleaned things up. 
    I'll be trying to figure out what caused this problem in the first 
place.

Ben

Benjamin Coddington wrote:
> Minor work caused a serious problem with the Blackboard cluster this 
> morning.  Blackboard is currently down, and will be back shortly.
> 
> Ben
>