Ceph » CephFS

2019-08-09 14:41:39.292140 7fd33eba7700 0 log_channel(cluster) log [WRN] : client id 2646901 has not responded to cap revoke by MDS for over 30 seconds, evicting
2019-08-09 14:41:42.431933 7fd33eba7700 0 log_channel(cluster) log [WRN] : client id 2646901 has not responded to cap revoke by MDS for over 30 seconds, evicting

std::vector<client_t> Locker::get_late_revoking_clients(double timeout) const
{
  std::vector<client_t> result;

  if (any_late_revoking_caps(revoking_caps, timeout)) {
    // Slow path: execute in O(N_clients)
    for (auto &p : revoking_caps_by_client) {
      if (any_late_revoking_caps(p.second, timeout)) {
        result.push_back(p.first);
      }
    }
  } else {
    // Fast path: no misbehaving clients, execute in O(1)
  }
  return result;
}

client is put to to_evict vector twice in the situation client does't response two caps revoke.