[Pacemaker] Manual promote/demote and time between demote and promote

hj lee kerdosa at gmail.com
Tue Jul 28 22:45:37 EDT 2009

Thank you very much for your reply.

When I use the heartbeat stack, it takes 3 sec. In the same environment, it
takes less than 1 sec with OpenAIS stack. I am using RHEL 5 rpms from
Pacemaker and Pacemaker 1.0.4. Did any body measure the time takes from
demote to promote on both stacks? I wonder whether other people have the
same result or not.


On Tue, Jul 28, 2009 at 2:26 AM, Andrew Beekhof <andrew at beekhof.net> wrote:

> > 2. By using co-location constraint, the time takes from demote to promote
> is
> > around 3 sec(when notify is enabled) and 1 sec (when notify is disabled).
> > For mission critical application, I think a downtime of 1 or 3 sec is too
> > long. How can I minimize this transition time?
> Its purely down to your network and what the resource is doing during
> the promote/demote and notify actions.
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