Hi Ilya, This time is not a udev related question. I think (hope ?) there won't be any other udev trick questions. A year ago I spent some time investigating the possible cause of http://tracker.ceph.com/issues/9570#note-8 I exhausted all options (the log of my research is at http://tracker.ceph.com/issues/9570#note-17 and following). The problem resurfaces, rarely but often enough to re-open the case and examine new logs. I would be grateful if you could share bits of wisdom regarding AIO, if you have some :-) Cheers -- Loïc Dachary, Artisan Logiciel Libre -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html