RE: ocfs2/oracleasm on Red Hat 4

Updating the OS kernel has been a best practice for me as I am also doing the 
Sys admin work. Any specifics as to why you discourage it?

My thought on 'upgrading' was to first add an RHEL5 server to the cluster and 
then take RHEL4 nodes out.

-Julio


-----Original Message-----
From: Matthew Zito [mailto:mzito@xxxxxxxxxxx] 
Sent: Thursday, May 28, 2009 12:43 PM
To: QuijadaReina, Julio C; Guillermo Alan Bort
Cc: oracle-l@xxxxxxxxxxxxx
Subject: RE: ocfs2/oracleasm on Red Hat 4

For sure, both Oracle and Red Hat are encouraging people to go to RHEL5.  
However, they can encourage all they like, it's still technically a supported 
OS by both organizations, so they don't have a lot of choice if you press the 
issue.

If you're looking at upgrading to RHEL5, I guess my question would be - why are 
you looking at upgrading the kernel version?  If it's just as a best practice, 
I'd discourage you from doing so.  If it's for a specific bug, then you may not 
have any options.

But RHEL4->5 has a number of changes in a number of areas, notably the iSCSI 
stack, the required kernel parameters for Oracle, a different kernel scheduler 
model, etc.  I'd be very leery of upgrading between major RHELs if possible.

The last option is that you could make your own ASMlib and OCFS2 modules 
compiled against the updated red hat kernel - probably a shorter turnaround 
time vs. oracle and you don't have to deal with them.  However, does put you in 
the business of rolling your own software, which some folks are quite resistant 
to.

Matt
--
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