On 5/17/07, felipera <[EMAIL PROTECTED]> wrote:
Hi everyone,

I am trying to setup two MQ Servers (4.1.1), sharing the same data directory
(I tried Derby and Kaha), on top of OCFS, but the locking doesn't seem to be
working. It works fine when both MQs are running on the same server (still
using OCFS). I see the second MQ waiting for the lock to be released
("Journal is locked... waiting 10 seconds for the journal to be unlocked.").
That's why I am not sure if it's a OCFS issue. But when I run each MQ in
separate boxes (still sharing the same data directory using OCFS) it doesn't
work, they both start successfully.

This is the OCFS you're talking about right?
http://en.wikipedia.org/wiki/OCFS2

I guess the file locking isn't working from Java. I wonder how to use
file locking properly on OCFS.

I am thinking about using a network of brokers, since I don't know what else
to try.

If you want clustering & replicated message stores you could try one
of the other Master/Slave implementations.
http://activemq.apache.org/masterslave.html

FWIW Networks of Brokers is for store and forward of messages only;
messages are never replicated in multiple locations with networks of
brokers.

--
James
-------
http://macstrac.blogspot.com/

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