My problem is showing on a Hyper-V setup, but is not strictly a Hyper-V problem. Hyper0V is exposing the symptom.
I created a fixed size file on a drive in the host that almost fills the physical volume. This is causing "Low Disk Space" messages. Which, in turn, appears to be causing the guest VM to go to "Pause-Critical" status.
How can I make Server 2008 and/or Hyper-V stop doing this check? Or, will I have to reduce the size of my fixed size files(s)?