_entryFile = file;
Chronos c = new Chronos();
ChannelReader in = new ChannelReader(file);
try {
in.open();
// Read entry head
long fileVersion = in.readLong();
if (fileVersion != STORAGE_VERSION) {
throw new RuntimeException("Wrong storage version " + fileVersion + " encounted in " + file.getAbsolutePath() + ". Version " + STORAGE_VERSION