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| Bill57 |
 Posted: Tue Sep 17, 2002 8:06 am Post subject: Mounting MQ file systems using NFS |
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Apprentice
Joined: 26 Jul 2002
Posts: 35
Location: Atlanta, GA
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I work in a UNIX shop (AIX) running MQSeries 5.2. Currently, we have a "hot stand by" machine that is switched on using HACMP. All the file systems for MQ are mounted on an external volume (including the logs). It works well really, but here is the problem.
I need to build out a whole new set of servers (F 50s) with WebSphere 5.3. The two boxes they gave me have no external volume for my file system. The subject came up about doinig an NFS mout, and I have never done it. The Idea needs to be the same as the current HACMP with external volume, just using NFS.
A little help would be great!
Thanks
Bill
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Bill Anderson
MQSeries Developer |
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| dgolding |
| Posted: Tue Sep 17, 2002 9:49 pm Post subject: |
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Yatiri
Joined: 16 May 2001
Posts: 668
Location: Switzerland
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I have a strong feeling that a manual states somewhere that an NFS mount is a strict no-no.
I THINK this is because that MQ uses the inode number of a file for something (locking? building a key for SHMGET?), and this isn't available over NFS. The reason is a guess, but the no-no I believe is pretty solid....
You could always experiment on a TEST system - mount /var/mqm - and try and start your queue manager. I asume you will have the software loaded locally, as you start getting into complexities about shared library location and stuff...
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| nimconsult |
| Posted: Tue Sep 17, 2002 10:15 pm Post subject: |
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Master
Joined: 22 May 2002
Posts: 268
Location: NIMCONSULT - Belgium
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The log files (/var/mqm/log) and data files (/var/mqm/qmgrs) CANNOT be mounted using NFS.
This is documented in the "MQ Series for AIX quick beginnings" manual.
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Nicolas Maréchal
Senior Architect - Partner
NIMCONSULT Software Architecture Services (Belgium)
http://www.nimconsult.be |
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| Bill57 |
| Posted: Wed Sep 18, 2002 4:09 am Post subject: |
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Apprentice
Joined: 26 Jul 2002
Posts: 35
Location: Atlanta, GA
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Thanks all for the help,
Bill
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Bill Anderson
MQSeries Developer |
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| Tibor |
| Posted: Sun Jan 05, 2003 10:47 pm Post subject: |
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Grand Master
Joined: 20 May 2001
Posts: 1033
Location: Hungary
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| nimconsult wrote: |
The log files (/var/mqm/log) and data files (/var/mqm/qmgrs) CANNOT be mounted using NFS.
This is documented in the "MQ Series for AIX quick beginnings" manual. |
Nicolas,
Does it mean MQ client is working on a /var/mqm mounted on NFS?
I'm slightly confused, because install process of MQ client was created a full 'server-like' filesystem below /var/mqm (log and qmgrs, too).
Tibor |
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| nimconsult |
| Posted: Sun Jan 05, 2003 11:21 pm Post subject: |
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Master
Joined: 22 May 2002
Posts: 268
Location: NIMCONSULT - Belgium
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Well I cannot tell you why, but the manual says that even for a client installation, /var/mqm must be on a local file system. However, /var/mqm/errors and /var/mqm/trace can be NFS mounted.
(MQ Series for AIX v5r2 quick beginnings)
Nicolas
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Nicolas Maréchal
Senior Architect - Partner
NIMCONSULT Software Architecture Services (Belgium)
http://www.nimconsult.be |
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| Tibor |
| Posted: Tue Jan 07, 2003 12:27 am Post subject: |
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Grand Master
Joined: 20 May 2001
Posts: 1033
Location: Hungary
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| nimconsult wrote: |
| Well I cannot tell you why, but the manual says that even for a client installation, /var/mqm must be on a local file system. However, /var/mqm/errors and /var/mqm/trace can be NFS mounted. |
Nicolas,
I'd read this paragraph in the manual, too, but I'm just asking about a "real life" practise.
Tibor |
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