Re: [Linux-cluster] RHEL 4: quorate or inquorate

[Lon Hohberger <lhh redhat com>]

On Thu, Apr 12, 2007 at 03:08:27PM -0600, Dex Chen wrote:
> Thanks for the response.
> 
> I figured out the cause. I used "cman_tool leave remove" when I shutdown
> the other 2 nodes. In this way, the remaining one/cluster had "quorum:
> 1, and expected vote 1". I was surprised that the "2 node cluster"
> special case did not prevent this.
> 
> My remaining question is:
> Do you see any potential risks such as "split brain" when the stopped
> nodes come back, especially in a more-node cluster (say 5 node cluster)?

You can have a split brain if you try to boot the other nodes
during a network partition...

-- Lon

-- 
Lon Hohberger - Software Engineer - Red Hat, Inc.