volume: auto add missing vif files

fix https://github.com/chrislusf/seaweedfs/issues/1878

weed/storage/erasure_coding/ec_volume.go

@@ -63,7 +63,7 @@ func NewEcVolume(diskType types.DiskType, dir string, dirIdx string, collection
 
 	// read volume info
 	ev.Version = needle.Version3
-	if volumeInfo, found, _ := pb.MaybeLoadVolumeInfo(dataBaseFileName + ".vif"); found {
+	if volumeInfo, _, found, _ := pb.MaybeLoadVolumeInfo(dataBaseFileName + ".vif"); found {
 		ev.Version = needle.Version(volumeInfo.Version)
 	} else {
 		pb.SaveVolumeInfo(dataBaseFileName+".vif", &volume_server_pb.VolumeInfo{Version: uint32(ev.Version)})

weed/storage/store.go

@@ -456,7 +456,7 @@ func (s *Store) ConfigureVolume(i needle.VolumeId, replication string) error {
 		// load, modify, save
 		baseFileName := strings.TrimSuffix(fileInfo.Name(), filepath.Ext(fileInfo.Name()))
 		vifFile := filepath.Join(location.Directory, baseFileName+".vif")
-		volumeInfo, _, err := pb.MaybeLoadVolumeInfo(vifFile)
+		volumeInfo, _, _, err := pb.MaybeLoadVolumeInfo(vifFile)
 		if err != nil {
 			return fmt.Errorf("volume %d fail to load vif", i)
 		}

weed/storage/volume_tier.go

@@ -16,7 +16,7 @@ func (v *Volume) GetVolumeInfo() *volume_server_pb.VolumeInfo {
 func (v *Volume) maybeLoadVolumeInfo() (found bool) {
 
 	var err error
-	v.volumeInfo, v.hasRemoteFile, err = pb.MaybeLoadVolumeInfo(v.FileName(".vif"))
+	v.volumeInfo, v.hasRemoteFile, found, err = pb.MaybeLoadVolumeInfo(v.FileName(".vif"))
 
 	if v.volumeInfo.Version == 0 {
 		v.volumeInfo.Version = uint32(needle.CurrentVersion)
@@ -29,10 +29,10 @@ func (v *Volume) maybeLoadVolumeInfo() (found bool) {
 
 	if err != nil {
 		glog.Warningf("load volume %d.vif file: %v", v.Id, err)
-		return false
+		return
 	}
 
-	return true
+	return
 
 }