[prev in list] [next in list] [prev in thread] [next in thread] 

List:       activemq-dev
Subject:    [jira] [Created] (AMQ-4705) Add keep alive support to shared file locker
From:       "Gary Tully (JIRA)" <jira () apache ! org>
Date:       2013-08-30 14:19:51
Message-ID: JIRA.12666328.1377872361847.60336.1377872391564 () arcas
[Download RAW message or body]

Gary Tully created AMQ-4705:
-------------------------------

             Summary: Add keep alive support to shared file locker
                 Key: AMQ-4705
                 URL: https://issues.apache.org/jira/browse/AMQ-4705
             Project: ActiveMQ
          Issue Type: Bug
          Components: Message Store
    Affects Versions: 5.8.0
            Reporter: Gary Tully
            Assignee: Gary Tully
             Fix For: 5.9.0


issue on nsfv4 with a master slave configuration, where both the slave and the master \
could obtain a lock. The following events occurred:

* master locks the file - does no more i/o to it – it's passive wrt the lock
* slave asks every 10 seconds if it can get the lock nfs come back and say no, \
                someone has it
* nfs dies not nicely
 ** nfsv4 is stateful - no callback for locks. It has a grace period 30 seconds to \
                let all clients had locks reclaims locked
* master does not realize it needs to reclaim the lock and continues under the \
                assumption it has the lock.
* After 30 sec grace period, slave comes in and asks for the lock and it receives it.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira


[prev in list] [next in list] [prev in thread] [next in thread]