Fix option parsing

main.go

@@ -353,7 +353,7 @@ func (d *ofsDriver) Mount(r *volume.MountRequest) (*volume.MountResponse, error)
 					log.WithFields(log.Fields{"name": v.Volume.Name, "snapshot": v.BackupSnapshot}).Info("Failed to create a new backup snapshot")
 					return &volume.MountResponse{}, err
 				} else {
-					v.BackupSnapshot = strings.SplitAfter(snapshotIdWithSuffix, " ")[0]
+					v.BackupSnapshot = strings.Split(snapshotIdWithSuffix, " ")[0]
 					fs = v.BackupSnapshot
 				}
 			}
@@ -846,7 +846,7 @@ func setIntersect[TKey comparable, TValue any, TValue2 any](a map[TKey]TValue, b
 }
 
 func addMountOption(mountOpts map[string]string, keyVal string) {
-	keyValA := strings.SplitAfterN(keyVal, "=", 2)
+	keyValA := strings.SplitN(keyVal, "=", 2)
 	key := keyValA[0]
 	var val string
 	if len(keyValA) <= 1 {