[jira] [Created] (ARTEMIS-1108) Shared-store with AIO fails to lock lockfile on NFS shares

["Bernd Gutjahr (JIRA)" <ji...@apache.org>]

Bernd Gutjahr created ARTEMIS-1108:
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             Summary: Shared-store with AIO fails to lock lockfile on NFS shares
                 Key: ARTEMIS-1108
                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1108
             Project: ActiveMQ Artemis
          Issue Type: Bug
          Components: Broker
    Affects Versions: 2.0.0, 1.5.4
         Environment: Linux with NFS-mounted shared-store directory
            Reporter: Bernd Gutjahr
            Priority: Minor


When we setup shared-store backup servers with the shared store path pointed to an NFS-mounted directory, file locking didn't work until we disabled AIO and used NIO instead. Although NFS is not recommended and we don't want to use in production, we wanted to use NFS in some test or demo setups just for simplicity.
As it turned out, the reason why it doesn't work with AIO is that flock is used instead of lockf. According to the code comments, the class AIOFileLockNodeManager had been added due to a GFS2 bug, https://bugzilla.redhat.com/show_bug.cgi?id=678585. But that GFS2 bug has already been fixed more than 5 years ago, end of 2011. So I think it would be time to remove the flock-based workaround.



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