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| yadav.neeraj01 |
 Posted: Tue Feb 23, 2016 4:54 pm Post subject: Separate Mount points |
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Apprentice
Joined: 23 Feb 2011
Posts: 49
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Hi Experts... in our prod environment we want separate mount points for /var/mqm/errors and /var/mqm/trace . As of now they are under /var/mqm.
We are using MQ V8.
If we stop the queue managers and move the files of /var/mqm/errors and /var/mqm/trace to a separate folder for back up and after the mount again place those to these location and start the queue manager. Will there be any issue on this? or any other way to achieve this   |
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| rammer |
| Posted: Tue Feb 23, 2016 5:19 pm Post subject: |
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Partisan
Joined: 02 May 2002
Posts: 359
Location: England
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| There should not be a problem doing that. |
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| gbaddeley |
| Posted: Thu Feb 25, 2016 2:33 am Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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Do you have /var/mqm or /var/mqm/qmgrs on a separate mount point? Otherwise the queue managers can use up all the disk space on the root file system 
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Glenn |
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| ghoshly |
| Posted: Sun May 22, 2016 6:52 pm Post subject: Best Practice for MQ File system |
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Partisan
Joined: 10 Jan 2008
Posts: 333
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Is there any best practice to have number of file system mounts for MQ queue managers, log, data etc.?
Can Performance vary based on number of mount points? |
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| fjb_saper |
| Posted: Sun May 22, 2016 7:03 pm Post subject: Re: Best Practice for MQ File system |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| ghoshly wrote: |
Is there any best practice to have number of file system mounts for MQ queue managers, log, data etc.?
Can Performance vary based on number of mount points? |
Indeed it can. But it varies mostly depending on the speed of your disks... 
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MQ & Broker admin |
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| vsathyan |
| Posted: Sun May 22, 2016 7:31 pm Post subject: |
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Centurion
Joined: 10 Mar 2014
Posts: 121
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/var/mqm/errors hold the MQ error logs and any FDCs generated.
Make sure it is a local mount (do not put this in N A S).
Since traces are captured only during an incident or whenever required, you can opt to have a separate mount for traces too, but not necessary all the time.
Also, there are multiple ways to capture traces, including wrapping traces, which you can limit the size of the trace files and use the same file again and again (like circular logging), there is no risk of running out of space in /var/mqm/traces.
To answer your question, you can have separate mounts for /var/mqm/errors and /var/mqm/traces.
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Custom WebSphere MQ Tools Development C# & Java
WebSphere MQ Solution Architect Since 2011
WebSphere MQ Admin Since 2004 |
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| mqjeff |
| Posted: Mon May 23, 2016 4:29 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| vsathyan wrote: |
| /var/mqm/errors hold the MQ error logs and any FDCs generated. |
It holds the errors for the MQ system as a whole, and FDCs for all queue managers.
Each queue manager has it's own error logs in /var/mqm/qmgrs/<qm_name>/errors.
A very different set of errors will be stored in each location.
But all FDCs will be stored in /var/mqm/errors.
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| JosephGramig |
| Posted: Wed Jun 01, 2016 9:43 am Post subject: |
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Grand Master
Joined: 09 Feb 2006
Posts: 1244
Location: Gold Coast of Florida, USA
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As a general practice, I would always put the Qmgr on two isolated mount points. Something like:
/var/ibm/mqm/<QmgrName>/data
/var/ibm/mqm/<QmgrName>/log
This will isolate your Qmgr data and transaction logs from other Qmgrs and itself. It also has the advantage of allowing you to easily convert this to an HA or MI Qmgr in the future.
Do this with the crtmqm -md /bla/bla/data -ld /bla/bla/log <QmgrName>
and remember that you cannot change the log file pages size or type of log after creation... |
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