Hello all, I have a question about Ceph notification mechanism. http://ceph.com/docs/master/architecture/#object-watch-notify Scenario: (1) 3 clients (client1, client2, client3) have interests on a Ceph object (object A). Each client calls rados_watch() to register notification callback on the object.. (2) Client1 calls rados_notify() on object A. On client1 and client2, the notification is delivered and processed successfully within a timeout period. (3) However on client3, the notification is delivered, but it doesn't complete within a timeout period for a temporary reason, such as temporarily busy process for instance. (4) On client1, rados_notify() returns a status of timeout. (5) On client3, the temporary reason goes away and the notification is processed. (6) Then, client3 attempts to read from object A by a call to rados_read(). Question: Will the call to rados_read() attempted at step (6) always succeed, always fail or is the behavior unpredictable, which is, it's affected by the factors that are not defined in this scenario? Thank you. Shinji Matsumoto SIOS technology, Inc. -- 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
