xl/fs: Fix initializing meta volume bug.

cmd/fs-v1.go

@@ -60,6 +60,11 @@ func newFSObjects(storage StorageAPI) (ObjectLayer, error) {
 		return nil, fmt.Errorf("Unable to recognize backend format, %s", err)
 	}
 
+	// Initialize meta volume, if volume already exists ignores it.
+	if err = initMetaVolume([]StorageAPI{storage}); err != nil {
+		return nil, fmt.Errorf("Unable to initialize '.minio.sys' meta volume, %s", err)
+	}
+
 	// Initialize fs objects.
 	fs := fsObjects{
 		storage:  storage,

cmd/object-common.go

@@ -211,22 +211,22 @@ func initMetaVolume(storageDisks []StorageAPI) error {
 			if err != nil {
 				if !isErrIgnored(err, initMetaVolIgnoredErrs...) {
 					errs[index] = err
+					return
 				}
-				return
 			}
 			err = disk.MakeVol(minioMetaTmpBucket)
 			if err != nil {
 				if !isErrIgnored(err, initMetaVolIgnoredErrs...) {
 					errs[index] = err
+					return
 				}
-				return
 			}
 			err = disk.MakeVol(minioMetaMultipartBucket)
 			if err != nil {
 				if !isErrIgnored(err, initMetaVolIgnoredErrs...) {
 					errs[index] = err
+					return
 				}
-				return
 			}
 		}(index, disk)
 	}

cmd/xl-v1.go

@@ -112,6 +112,11 @@ func newXLObjects(storageDisks []StorageAPI) (ObjectLayer, error) {
 		objCacheEnabled: !objCacheDisabled,
 	}
 
+	// Initialize meta volume, if volume already exists ignores it.
+	if err = initMetaVolume(storageDisks); err != nil {
+		return nil, fmt.Errorf("Unable to initialize '.minio.sys' meta volume, %s", err)
+	}
+
 	// Figure out read and write quorum based on number of storage disks.
 	// READ and WRITE quorum is always set to (N/2) number of disks.
 	xl.readQuorum = readQuorum