On Thu, Apr 09, 2009 at 04:09:18PM -0500, David Teigland wrote:
> On Thu, Apr 09, 2009 at 03:50:08PM -0500, David Teigland wrote:
> > On Thu, Apr 09, 2009 at 10:12:43PM +0200, Andrew Beekhof wrote:
> > > On Thu, Apr 9, 2009 at 20:49, Joel Becker <joel.bec...@oracle.com> wrote:
> > > > On Thu, Apr 09, 2009 at 01:50:18PM +0200, Andrew Beekhof wrote:
> > > >> For added fun, a node that restarts quickly enough (think a VM) won't
> > > >> even appear to have left (or rejoined) the cluster.
> > > >> At the next totem confchg event, It will simply just be there again
> > > >> with no indication that anything happened.
> > > >
> > > > ? ? ? ?This had BETTER not happen.
> > >
> > > It does, I've seen it enough times that Pacemaker has code to deal with
> > > it.
> >
> > I'd call that a serious flaw we need to get fixed. I'll see if I can make
> > it
> > happen here.
>
> That was pretty simple.
> - set token to 5 minutes
> - nodes 1,2,3,4 are cluster members and members of a cpg
> - on node4: ifdown eth0, kill corosync, ifup eth0, start corosync
> - nodes 1,2,3 seem completely unaware that 4 ever went away
>
> When node 4 joins the cpg after coming back, the cpg on nodes 1,2,3 think that
> a new fifth process/node is joining the cpg. The cpg on node 4 shows itself
> being added as a new fourth cpg member.
Steve,
If node 4's old process went away, shouldn't we be getting a
'leave' for that, rather than it persisting in the member list?
Joel
--
"I don't want to achieve immortality through my work; I want to
achieve immortality through not dying."
- Woody Allen
Joel Becker
Principal Software Developer
Oracle
E-mail: joel.bec...@oracle.com
Phone: (650) 506-8127
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