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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