Use full command name of "thin_delta"

Author: yasker

devmapper/devmapper.go

@@ -383,7 +383,8 @@ func (d *Driver) CompareSnapshot(id, compareID, volumeID string) (*metadata.Mapp
 	}
 
 	dev := d.MetadataDevice
-	out, err := exec.Command("thin_delta", "--snap1", strconv.Itoa(snap1.DevID), "--snap2", strconv.Itoa(snap2.DevID), dev).Output()
+	out, err := exec.Command("pdata_tools", "thin_delta",
+		"--snap1", strconv.Itoa(snap1.DevID), "--snap2", strconv.Itoa(snap2.DevID), dev).Output()
 	if err != nil {
 		return nil, err
 	}

drivers/drivers.go

@@ -57,7 +57,7 @@ func Mount(driver Driver, volumeUUID, mountPoint, fstype, option string, needFor
 		return fmt.Errorf("unsupported filesystem ", fstype)
 	}
 	if needFormat {
-		if err := exec.Command("mkfs", "-t", fstype, dev).Run(); err != nil {
+		if err := exec.Command("mkfs."+fstype, dev).Run(); err != nil {
 			return err
 		}
 	}