[Pacemaker] Heartbeat over Disk or non IP possible?

[Dejan Muhamedagic]

Hi,

On Wed, Apr 27, 2011 at 12:15:02PM +0200, Ulf wrote:
> Hi,
> 
> I won't call it akademic curiosity.
> Let's say you have two rooms with a distance of 5km. In theory both network connections are completly independent, but in real live there are a lot of possible reasons, why they are not independent.
> It might be just a human errors or a technical problem like a running spanning tree.
> 
> In theses cases it is very helpful to have a technical independent solution like heartbeat over fibre channel disk to avoid a split brain.

I think that you can run IP over fibre. Though I can't recall
anymore if I ever tried to use that or that somebody reported
using it here.

> I'd like to have the idepentend way to prevent a split brain situation.
> The network technology is one technology (even with redundant connections), so a potential SPoF. A disk heartbeat would add a second technology.

Would a quorum disk be an acceptable solution for you? That may
be easier to implement.

Cheers,

Dejan

> 
> 
> Cheers,
> Ulf
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