add vif file versions in case loading superblock fails

weed/storage/volume_loading.go

@@ -39,12 +39,12 @@ func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind
 		}
 	}()
 
-	hasVolumeInfoFile := v.maybeLoadVolumeInfo() && v.volumeInfo.Version != 0
+	hasVolumeInfoFile := v.maybeLoadVolumeInfo()
 
 	if v.HasRemoteFile() {
 		v.noWriteCanDelete = true
 		v.noWriteOrDelete = false
-		glog.V(0).Infof("loading volume %d from remote %v", v.Id, v.volumeInfo.Files)
+		glog.V(0).Infof("loading volume %d from remote %v", v.Id, v.volumeInfo)
 		v.LoadRemoteFile()
 		alreadyHasSuperBlock = true
 	} else if exists, canRead, canWrite, modifiedTime, fileSize := util.CheckFile(v.FileName(".dat")); exists {

weed/storage/volume_tier.go

@@ -6,6 +6,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
 	"github.com/chrislusf/seaweedfs/weed/storage/backend"
 	_ "github.com/chrislusf/seaweedfs/weed/storage/backend/s3_backend"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
 )
 
 func (v *Volume) GetVolumeInfo() *volume_server_pb.VolumeInfo {
@@ -14,14 +15,24 @@ func (v *Volume) GetVolumeInfo() *volume_server_pb.VolumeInfo {
 
 func (v *Volume) maybeLoadVolumeInfo() (found bool) {
 
-	v.volumeInfo, v.hasRemoteFile, _ = pb.MaybeLoadVolumeInfo(v.FileName(".vif"))
+	var err error
+	v.volumeInfo, v.hasRemoteFile, err = pb.MaybeLoadVolumeInfo(v.FileName(".vif"))
+
+	if v.volumeInfo.Version == 0 {
+		v.volumeInfo.Version = uint32(needle.CurrentVersion)
+	}
 
 	if v.hasRemoteFile {
 		glog.V(0).Infof("volume %d is tiered to %s as %s and read only", v.Id,
 			v.volumeInfo.Files[0].BackendName(), v.volumeInfo.Files[0].Key)
 	}
 
-	return
+	if err != nil {
+		glog.Warningf("load volume %d.vif file: %v", v.Id, err)
+		return false
+	}
+
+	return true
 
 }