}
@Override
public void renameSnapshot(String snapshotRoot, String snapshotOldName,
String snapshotNewName) throws IOException {
RenameSnapshotRequestProto req = RenameSnapshotRequestProto.newBuilder()
.setSnapshotRoot(snapshotRoot).setSnapshotOldName(snapshotOldName)
.setSnapshotNewName(snapshotNewName).build();
try {
rpcProxy.renameSnapshot(null, req);
} catch (ServiceException e) {