This reports the last action triggered against a named feature set, reading noOp if nothing has been triggered since the device's last reboot -- the feature-set-level equivalent of cfcFeatureCtrlLastAction. Checking this alongside cfcFeatureSetLastActionResult tells an admin both what was last requested for an entire functional area, like fcoe, and whether that broad, potentially disruptive request actually succeeded. A feature set showing disable here combined with an actionFailed result would tell an admin an attempt to shut off that entire functional area did not actually take effect, so any traffic depending on it is presumably still unaffected.