Skip syncing the backup which doesn't contain backup metadata

changelogs/unreleased/7081-ywk253100

@@ -0,0 +1 @@
+Skip syncing the backup which doesn't contain backup metadata

pkg/controller/backup_sync_controller.go

@@ -142,6 +142,16 @@
 		log = log.WithField("backup", backupName)
 		log.Info("Attempting to sync backup into cluster")
 
+		exist, err := backupStore.BackupExists(location.Spec.ObjectStorage.Bucket, backupName)
+		if err != nil {
+			log.WithError(errors.WithStack(err)).Error("Error checking backup exist from backup store")
+			continue
+		}
+		if !exist {
+			log.Debugf("backup %s doesn't exist in backup store, skip", backupName)
+			continue
+		}
+
 		backup, err := backupStore.GetBackupMetadata(backupName)
 		if err != nil {
 			log.WithError(errors.WithStack(err)).Error("Error getting backup metadata from backup store")

pkg/controller/backup_sync_controller_test.go

@@ -429,6 +429,7 @@ var _ = Describe("Backup Sync Reconciler", func() {
 					backupNames = append(backupNames, backup.backup.Name)
 					backupStore.On("GetBackupMetadata", backup.backup.Name).Return(backup.backup, nil)
 					backupStore.On("GetPodVolumeBackups", backup.backup.Name).Return(backup.podVolumeBackups, nil)
+					backupStore.On("BackupExists", "bucket-1", backup.backup.Name).Return(true, nil)
 				}
 				backupStore.On("ListBackups").Return(backupNames, nil)
 			}