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| girish_tharwani |
 Posted: Wed Feb 18, 2009 11:14 pm Post subject: Filesystem preparation for WMB6 installation ?? |
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Voyager
Joined: 01 Aug 2001
Posts: 88
Location: Pune, India
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| WMQ6 installation guide has a section on how to prepare filesystems (/var/mqm, /opt, /var/mqm/log etc) for installation but WMB6 installation guide does not have such information. Is there no preparation required at filesystem level (filesystem for broker configurations, broker database etc) before installation?! Can please someone point me to the documentation for this. |
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| smdavies99 |
| Posted: Wed Feb 18, 2009 11:47 pm Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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to keep it simple, Broker uses already installed components (eg WMQ & say DB2).
In the main, it does not use a significant amount of disk storage when running.
in a Linux/Unix environment, the default installation of the runtime creates a directory tree in /var for use by broker, the odbc connection data, broker properties and trace files.
compared to the amount of space that a WMQ Queue Manager & a DB2 Database can take up, the space used by the Broker Runtime is insignificant.
There are some exceptions (aren't there always). For example, if you are using the FileOutputNode with LARGE amounts of data then that may cause you some storage problems if there is either too much data or you don't clear the destination directores down quick enough but I put that exception into the category of Application Data Storage and not the general purpose storage required & used by Broker.
Finally,
Remember to allocate enough swap space on your system so that a complete Execution (DataFlowEngine process) can be swapped out in its entirety.
_________________
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Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| girish_tharwani |
| Posted: Thu Feb 19, 2009 12:42 am Post subject: Filesystem preparation for WMB6 installation ?? |
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Voyager
Joined: 01 Aug 2001
Posts: 88
Location: Pune, India
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Thanks smdavies99.
So in other words, /var/mqsi will consume some space from the storage allcoated to /var or alternatively I can provision some space to /var/mqsi. Do you think 10 MB per broker is good amount?
In addition to that, I need to provision necessary space for the db2 instance that's going to host the broker DBs, right? I believe the space needed for it will depended on how many exec groups, flows etc I will put on the broker.
I believe the space needed /var/mqsi does not vary with the number of exec groups / flows on each broker, correct? |
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| smdavies99 |
| Posted: Thu Feb 19, 2009 3:43 am Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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Is 10Mb all you have got to spare?
It is not big enough if you have to start taking service traces etc. Disks are cheap these days so why skimp?
Then monitor the space used over a period of time and then you can make up your own mind.
_________________
WMQ User since 1999
MQSI/WBI/WMB/'Thingy' User since 2002
Linux user since 1995
Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| ramires |
| Posted: Thu Feb 19, 2009 4:07 am Post subject: |
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Knight
Joined: 24 Jun 2001
Posts: 523
Location: Portugal - Lisboa
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| smdavies99 wrote: |
| In the main, it does not use a significant amount of disk storage when running. |
In my case under /var/mqsi/components/<brokername>/ I have several folders named with the execution group UUID and in them stdout and stderr file and those are quite large.
Is this a configuration option?
Thanks
joao |
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| smdavies99 |
| Posted: Thu Feb 19, 2009 6:29 am Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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The amount of space used by the runtime is not a configurable option.
How large is significant?
If /var/mqsi is 100Mb in size on a 144Gb Disk then it is pretty insignificant.
Everything is relative but I'd be very surprised if /var/mqsi ever got larger than 1Gb in normal use.(obviously, there may be exceptions)
When I configured my last Broker that ran on Linux, I setup a 32Gb /var/mqm filesystem.
I created a 1Gb /var/mqsi filesystem and it is currently 8% used.
_________________
WMQ User since 1999
MQSI/WBI/WMB/'Thingy' User since 2002
Linux user since 1995
Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| ramires |
| Posted: Thu Feb 19, 2009 6:36 am Post subject: |
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Knight
Joined: 24 Jun 2001
Posts: 523
Location: Portugal - Lisboa
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I've two broker under var/mqsi and the size used is about 1.6GB. The biggest files are "stdout"
Regards |
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| smdavies99 |
| Posted: Thu Feb 19, 2009 8:26 am Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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Hence what I said earlier
| Quote: |
It is not big enough if you have to start taking service traces etc. Disks are cheap these days so why skimp?
Then monitor the space used over a period of time and then you can make up your own mind |
_________________
WMQ User since 1999
MQSI/WBI/WMB/'Thingy' User since 2002
Linux user since 1995
Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| ramires |
| Posted: Thu Feb 19, 2009 9:18 am Post subject: |
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Knight
Joined: 24 Jun 2001
Posts: 523
Location: Portugal - Lisboa
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I aggree.
I gave my example as is, a live broker with 4 eg and 30 flows. If traces are active a lot more space is needed.
Regards |
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| bloomy |
| Posted: Thu Feb 19, 2009 1:31 pm Post subject: |
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Acolyte
Joined: 11 Feb 2009
Posts: 61
Location: Bloomington, IL USA
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These are the values for file system we use, We have as many as 25 EG's and 100 flows in each broker on an average. One broker per server.
Trace files may be a large contributor in filling up the /var/mqsi file system.
•2GB = /opt/IBM/mqsi
•2GB = /var/mqsi
•1GB = /home/brkuserid
All of the above mounted on seperate drives.
I am not aware of the version of Message Broker you are using but, In WMB 6.1.02 if /var/mqsi file system reaches 100% the configmgr cannot be connected from toolkit. You have free up some space and bounce the configmgr every time you reach 100% of file system space. Also remember the connectivity from toolkit(time taken to connect) also depends on the percentage of /var/mqsi file system full. |
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