Transaction txn = Transaction.open(Transaction.CLOUD_DB);
try {
txn.start();
for (Long volumeId : _volumesIds) {
VolumeVO volume = volDao.findById(volumeId);
if (volume == null) {
continue;
}
vmInstanceId = volume.getInstanceId();
if (_migrateState == StorageMigrationState.MIGRATING && volume.getState() == Volume.State.Migrating) {