Add instance checks for block dev map meta data
Add instance checks for block dev map meta data

nagyistoce/eutester,nagyistoce/eutester,tbeckham/eutester,tbeckham/eutester,nagyistoce/eutester,sjones4/eutester,nephomaniac/eutester,nephomaniac/eutester,shaon/eutester,shaon/eutester,shaon/eutester,shaon/eutester,nephomaniac/eutester,sjones4/eutester,sjones4/eutester,tbeckham/eutester,sjones4/eutester,nephomaniac/nephoria,nephomaniac/nephoria,nagyistoce/eutester,tbeckham/eutester