[Openais] openais with >1 ring?

Dejan Muhamedagic dejan at suse.de
Tue Feb 24 08:01:43 PST 2009

On Tue, Feb 24, 2009 at 04:38:47PM +0100, Dejan Muhamedagic wrote:
> On Tue, Feb 24, 2009 at 02:54:24PM +0100, Lars Marowsky-Bree wrote:
> > On 2009-02-23T18:45:41, Steven Dake <sdake at redhat.com> wrote:
> > 
> > > I can't really tell you what state it is in, other then it appears to be
> > > broken for you :(  Chrissie may be able to provide you some idea of its
> > > state.  She tests it occasionally with the full stack.
> I did some testing with the dual ring configuration. openais
> works fine and marks a ring as faulty in case of communication
> problems. However, it is not clear how/when would aisexec check
> the ring again. Right now, it looks like the ring is marked as
> faulty forever.
> It is also tricky because as it seems to work right now, if a
> node hears nothing on a particular interface it is deemed
> unusable. So, the only way to recover a ring would be for at
> least two nodes to start the recovery at about the same time.
> Now, since the nodes can communicate over the other ring, it is
> not possible to coordinate it. Another option would be to try the
> recovery so often that the recovery periods would overlap.

replying to myself:

Didn't know about openais-cfgtool until Steve mentioned it.
Though, unfortunately it doesn't work:

[0]s390vm13:crm > openais-cfgtool -r
Re-enabling all failed rings.
Could not reenable ring error 9
[0]s390vm13:crm > 

Anybody used this before?



> Cheers,
> Dejan
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