RHEV: Virtual Machines fail to snapshot or migrate with "Backing file name too long"

Solution Verified - Updated -

Issue

  • Virtual Machine fails to Migrate
  • Virtual Machine fails to Start
  • Virtual Machine fails to Complete Snapshot
  • Virtual Machine fails to Remove Snapshot
  • Virtual Machine fails to Clone
  • The following error is seen in vdsm.log:
qemu-img: Could not open '/rhev/data-center/... ... ... ...': Backing file name too long

Environment

  • Red Hat Enterprise Virtualization 3.5 and 3.6
  • Red Hat Enterprise Linux Host 7
  • Red Hat Enterprise Virtualization Host 7

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