@@ -717,8 +717,10 @@ func setCloseOnExec(name string) {

 }

 func (devices *DeviceSet) DMLog(level int, file string, line int, dmError int, message string) {

-	if level >= 7 {

-		return // Ignore _LOG_DEBUG

+	if level >= devicemapper.LogLevelDebug {

+		// (vbatts) libdm debug is very verbose. If you're debugging libdm, you can

+		// comment out this check yourself

+		level = devicemapper.LogLevelInfo

 	}

 	// FIXME(vbatts) push this back into ./pkg/devicemapper/

@@ -939,6 +941,11 @@ func (devices *DeviceSet) closeTransaction() error {

 }

 func (devices *DeviceSet) initDevmapper(doInit bool) error {

+	if os.Getenv("DEBUG") != "" {

+		devicemapper.LogInitVerbose(devicemapper.LogLevelDebug)

+	} else {

+		devicemapper.LogInitVerbose(devicemapper.LogLevelWarn)

+	}

 	// give ourselves to libdm as a log handler

 	devicemapper.LogInit(devices)