Copy/CopyFile does not guarantee consistent meta page about bolt HOT 3 CLOSED

    if (env->me_txns) {
        /* We must start the actual read txn after blocking writers */
        mdb_txn_reset0(txn, "reset-stage1");

        /* Temporarily block writers until we snapshot the meta pages */
        LOCK_MUTEX_W(env);

        rc = mdb_txn_renew0(txn);
        if (rc) {
            UNLOCK_MUTEX_W(env);
            goto leave;
        }
    }