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					                                       Re: Concurrent LVM − AIX 5.3

Re: Concurrent LVM − AIX 5.3

Source: http://unix.derkeiler.com/Mailing−Lists/AIX−L/2006−03/msg00054.html



      • From: Jeff Barratt−McCartney <jbarratt@xxxxxxxxxxx>
      • Date: Fri, 10 Mar 2006 21:05:15 −0500


concurrent I/O is not a concurrent(parallel) filesystem. it is concurrent access to the data from one server.



−−−−−Original Message−−−−−
From: IBM AIX Discussion List on behalf of Alexandre Sato
Sent: Fri 3/10/2006 9:00 PM
To: aix−l@xxxxxxxxxxxxx
Subject: Re: Concurrent LVM − AIX 5.3

There is an IBM white paper with a case study for Oracle Databases using
Concurrent I/O, which is over JFS2:
http://www−03.ibm.com/servers/aix/whitepapers/db_perf_aix.pdf

At sometime the paper says: "... For the Concurrent I/O run, the
filesystems were mounted with the −o cio mount option ..." and it's not
about Raw Devices. Maybe I misunderstood the concept, but I think it
reffers to concurrent filesystems.

I could be wrong, that's why I'm calling you guys for help.

Regards,

Alexandre.




Jeff Barratt−McCartney <jbarratt@xxxxxxxxxxx>
Sent by: IBM AIX Discussion List <aix−l@xxxxxxxxxxxxx>
10/03/2006 22:46
Please respond to IBM AIX Discussion List

To: aix−l@xxxxxxxxxxxxx
cc:
Subject: Re: Concurrent LVM − AIX 5.3



Re: Concurrent LVM − AIX 5.3                                                                                    1
                                      Re: Concurrent LVM − AIX 5.3



concurent LVM does not a parallel filesystem make.
you need gpfs


−−−−−Original Message−−−−−
From: IBM AIX Discussion List on behalf of Alexandre Sato
Sent: Fri 3/10/2006 8:31 PM
To: aix−l@xxxxxxxxxxxxx
Subject: Concurrent LVM − AIX 5.3

Hi Gurus,

I have an ETL environment and I need to share the same filesystem between
to p595 LPAR's with AIX 5.3 − ML03.

NFS is not an option since the data volume is very large to share across
the network with TCP/IP (more than 10GB).

Does anyone has all necessary requirements and procedure to create a
Concurrent Filesystem on AIX 5.3?

Is there any gap concerning Concurrent VG's with Concurrent Filesystems?

Thanks in advance.

Alexandre.


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Re: Concurrent LVM − AIX 5.3                                                                                 2
                                      Re: Concurrent LVM − AIX 5.3
unauthorised use or dissemination of this message in whole or in part is strictly prohibited. Please note that
e−mails are susceptible to change. ABN AMRO Bank N.V, which has its seat at Amsterdam, the Netherlands,
and is registered in the Commercial Register under number 33002587, including its group companies, shall
not be liable for the improper or incomplete transmission of the information contained in this communication
nor for any delay in its receipt or damage to your system. ABN AMRO Bank N.V. (or its group companies)
does not guarantee that the integrity of this communication has been maintained nor that this communication
is free of viruses, interceptions or interference.
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Re: Concurrent LVM − AIX 5.3                                                                                 3

				
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