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From Tim Bain <tb...@alumni.duke.edu>
Subject Re: question for users of NFS master/slave setups
Date Tue, 01 Mar 2016 15:41:28 GMT
Another possibility: the paths that each broker uses to reach the lock file
don't resolve to the same file in NFS.
On Mar 1, 2016 8:29 AM, "artnaseef" <art@artnaseef.com> wrote:

> So something is very wrong then.  NFS should *not* allow two NFS clients to
> obtain the same lock.
>
> Three possible explanations come to mind:
>
> * The lock file is getting incorrectly removed (I've never seen ActiveMQ
> cause this)
> * There is a flaw in the NFS locking implementation itself
> * The NFSv4 timeout for the lock is overly aggressive (perhaps less than 1
> second even?  The timeout needs to be at least a couple of minutes in most
> scenarios to be reliable)
>
> If the servers are Linux servers, try using strace to see their
> interactions
> with the lock file.
>
> BTW, each broker is running on its own dedicated server, right?
>
>
>
>
> --
> View this message in context:
> http://activemq.2283324.n4.nabble.com/question-for-users-of-NFS-master-slave-setups-tp4708204p4708644.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>

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