Re: corosync communication stops after link down

On Fri, Sep 26, 2014 at 12:00:04PM -0600, [email protected] wrote:
> Message: 1
> Date: Fri, 26 Sep 2014 14:41:41 +0200
> From: Helmut Wollmersdorfer <[email protected]>
> To: General Linux-HA mailing list <[email protected]>
> Subject: Re: [Linux-HA] corosync communication stops after link down
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=us-ascii
> 
> 
> Am 24.09.2014 um 22:35 schrieb Matthias Ferdinand <[email protected]>:
> 
> > OS: Ubuntu 14.04 64bit
> > corosync: 2.3.3-1ubuntu1
> > 2 nodes
> > 2 rings (em1, bond0(p2p1,p1p1)) rrp_mode: active,
> >        all with crossover cables, no switches
> > transport: udpu
> 
> 
> So, this bug 
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=746269
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=821352
> 
> is solved in your version of corosync? It must, because the cross-over point-to-point connection would always fail.

these bug reports are for corosync 1.x and point-to-point interfaces,
so they don't apply to our config (corosync 2.x with standard ip subnets
on the crossover connections).

> > This happened on two different cluster installs with rougly the same
> > hardware (Dell Poweredge R520 resp. R420, onboard Broadcom BCM5720 (em1),
> > 2x2port Intel I350 (p2p1,p1p1)).
> 
> Looks like a software or configuration problem.
> 
> Here are 2 x R510 and 2 x R520 with Debian, DRD, XEN, Corosync, Pacemaker.
> 
> Hmm, do you have 2 extension cards with dual port in each node? There was a bug in the kernel modules, maybe this is a regression or related. I had to remove the second card.

yes, it is 2x dual-port. I might try to remove the second card, but we
really need all the ports. Do you have details about the kernel/module
bug? 

With Ubuntu 12.04, we had to manually install the current Intel driver
modules, otherwise the kernel never saw a "link up".

Regards
Matthias
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