Hello,

here a message I picked up on the linux-cluster List. There seems to be 
an incompatible change in openais between 5.2 and 5.3. So updating an 
5.2 Cluster to 5.3 probabliy requires downtime (or blocking openais update)

Please note that TUV doesn't mention an incompatibility in the errata!

Sincerly,
Klaus

-----------Excerpt from Mail -----------------------------------------
Message: 8
Date: Thu, 19 Feb 2009 04:40:49 +0000
From: Corey Kovacs <[log in to unmask]>
Subject: Re: [Linux-cluster] Can machine running RHEL 5.3 be a cluster
	member	of a cluster with RHEL 5.2 OSes.
To: linux clustering <[log in to unmask]>
Cc: "[log in to unmask]" <[log in to unmask]>
Message-ID: <[log in to unmask]>
Content-Type: text/plain;	charset=us-ascii;	format=flowed;	delsp=yes

Openais was changed in a way that makes it incompatable with earlier
versions. I beleive the workaround is to install the version from 5.2.
Your other option is down time.

Regards,

Corey
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