Mailinglist Archive: opensuse (2831 mails)

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Re: [opensuse] Cluster and SuSE
  • From: "Yu Safin" <calanet@xxxxxxxxx>
  • Date: Thu, 27 Jul 2006 12:10:39 -0400
  • Message-id: <ddcadbdb0607270910n56d2f8bai5e8a90f96d155f8a@xxxxxxxxxxxxxx>
On 7/27/06, Silviu Marin-Caea <silviu_marin-caea@xxxxxxxxxxxxxxxx> wrote:
On Thursday 27 July 2006 01:10, Pascal Bleser wrote:

> OCFS2 (Oracle Cluster FileSystem v2) might be an option as well, haven't
> tried it myself though (btw, ocfs2 is included on SUSE Linux.. from 10.0
> on, AFAICR):
> http://oss.oracle.com/projects/ocfs2/
> http://www.eweek.com/article2/0,1895,1847510,00.asp
> (OCFS2 is not limited to Oracle RAC databases, it can be used as a
> software shared filesystem for virtually anything)

It works well now. We have it in production on SLES9 with Oracle DB RAC
10gR2. It had some bugs that were causing us problems but they were
resolved.


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We have SUN and Oracle DB RAC 9i and we are thinking of converting
over to Linux and Oracle DB RAC 9i. There are two nodes sharing the
database.

Before we convert, we need to test performance. I have been running
benchmarks to compare performance without the RAC part yet (i.e. on a
single node / no cluster).

We also have another application that runs AIX and Oracle that we are
porting to Linux and Oracle. I am finding that AIO (async I/O's) have
a lot more daemons on aix than it does on Linux.
I am also benchmarking this application. This is the Java one.
Today, it does not have a fail over and no RAC involved.

For both of these applications I would like to convert from Sun / Aix
to Linux in an active/passive fail-over set up and skip RAC. The
reason for this is that I run Linux for z-Series under z-VM on a
mainframe. In this environment I don't need the advantage of the
multiple workers in a cluster to be active since the hardware is the
same and the processing power can be shifted automatically from the
active to the passive.

In my RAC 9i solution today when a node takes a dive, it affects only
the transactions in progress in that node that failed. In an
active/passive linux-ha solution without RAC, I am wondering if the
fail-over would be automatic or if I would need to do some recovery
from the transaction log.

I will answer Pascal's questions in a different message.
Thank you all for your time. It is a great learning experience and I
hope I can share something new with this group.

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