[Linux-HA] Quorum problem with 3-node cluster

[Mark Hunting]

Hi,

I have set up a 3-node cluster. Works perfectly, but when I shut one
node down the other two lose quorum, and shut down their resources (!)
because no-quorum-policy is set to 'stop' like it should.
I have no idea why the quorum is lost, this really should not happen as
the remaining two nodes are still the majority. crm_mon shows them
online and they can talk to each other. Only the quorum is lost,
have_quorum is "false" until the third node comes up again.
Can anybody tell me how this is possible, or give me some command that
can help me investigate this?

Thanks,
Mark