[Ocfs2-users] Impact of OCFS2 upgrade

[Joel Becker]

On Mon, Sep 12, 2005 at 12:20:01PM +0100, Gil wrote:
> What is the impact of an OCFS2 upgrade?

	In the stable 1.0.0 series, OCFS2 upgrades should have no impact
other than bug fixes.

> Can data in OCFS2 partitions be compromised?

	It certainly should not be.

> Can it be done with the database up or does it imply downtime?

	It requires the partition to be at least unmounted, which
certainly cannot happen with the database up.  In your case, upgrading a
SLES kernel, you'll need to reboot to run the new kernel.
	Also, you're starting from a pre-1.0 beta version (0.99).  You
won't be able to do a rolling upgrade across your cluster.  You'll need
to bring all nodes offline (unmount the OCFS2 filesystem, upgrade OCFS2
to 1.0 or better on all nodes, remount them filesystems).  All 1.0
versions of OCFS2 do not have this issue.  If all your nodes are 1.0.x,
you can upgrade one node while the others are still online.

Joel

-- 

Life's Little Instruction Book #274

	"Leave everything a little better than you found it."

Joel Becker
Senior Member of Technical Staff
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127