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From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-4378) Documentation on Shared File System Master Slave wrong or out of date
Date Thu, 11 Apr 2013 20:17:16 GMT

    [ https://issues.apache.org/jira/browse/AMQ-4378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13629298#comment-13629298
] 

Gary Tully commented on AMQ-4378:
---------------------------------

If you have OCFS2 handy the only way to know for sure is to "ask the computer". Start two
broker instances and see if they both think they are masters. I don't know history of that
section of the doc, but I assume it was added in good faith based on a real test.
would be great to know we can work with OCFS2
                
> Documentation on Shared File System Master Slave wrong or out of date
> ---------------------------------------------------------------------
>
>                 Key: AMQ-4378
>                 URL: https://issues.apache.org/jira/browse/AMQ-4378
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Documentation, Message Store
>    Affects Versions: 5.8.0
>         Environment: Linux
>            Reporter: John Liptak
>            Priority: Minor
>              Labels: documentation
>
> The documentation at http://activemq.apache.org/shared-file-system-master-slave.html
says that OCFS2 does not work, saying 
> "OCFS2 only supports locking with 'fcntl' and not 'lockf and flock', therefore mutex
file locking from Java isn't supported." 
> However, based on my reading of the OpenJDK source, Java uses fcntl, not flock and this
statement is incorrect.

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