fix bug deleting volume or unmount volume if a volume server has multiple directories

weed/storage/store.go

@@ -434,10 +434,13 @@ func (s *Store) UnmountVolume(i needle.VolumeId) error {
 	}
 
 	for _, location := range s.Locations {
-		if err := location.UnloadVolume(i); err == nil || err == ErrVolumeNotFound {
+		err := location.UnloadVolume(i)
+		if err == nil {
 			glog.V(0).Infof("UnmountVolume %d", i)
 			s.DeletedVolumesChan <- message
 			return nil
+		} else if err == ErrVolumeNotFound {
+			continue
 		}
 	}
 
@@ -458,10 +461,13 @@ func (s *Store) DeleteVolume(i needle.VolumeId) error {
 		DiskType:         string(v.location.DiskType),
 	}
 	for _, location := range s.Locations {
-		if err := location.DeleteVolume(i); err == nil || err == ErrVolumeNotFound {
+		err := location.DeleteVolume(i)
+		if err == nil {
 			glog.V(0).Infof("DeleteVolume %d", i)
 			s.DeletedVolumesChan <- message
 			return nil
+		} else if err == ErrVolumeNotFound {
+			continue
 		} else {
 			glog.Errorf("DeleteVolume %d: %v", i, err)
 		}