Re: Dual star topology

[Hal Rosenstock <hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>]

On 7/24/2013 4:56 PM, Gandalf Corvotempesta wrote:
> 2013/7/24 Gandalf Corvotempesta <gandalf.corvotempesta-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>> I have to configure ceph on these subnets and ceph doesn't allow to
>> set multiple addresses for each service.
> 
> Let me try to explain in a better way.
> I would like to create a ceph cluster over an infiniband network.
> Each server has a signle dual-port HBA.
> Ceph is running with a *single* IP address on each server.
> 
> In a standard IP network, I have to interconnect both switches or i'll
> loose some traffic in case of a single port failure:
> 
> server1.port1      ib switch 1 <--> server2.port1
> server1.port2 <-> ib switch 2
> 
> 
> in this case, server1 will not be able to reach server2, because of split brain.
> An interconnection between both switches will solve this in a standard
> IP network.

So does ceph run on top of IP ? If so, could you use IPoIB bonding (and
interconnect the switches with some number of links) ?

-- Hal

> How can I archieve this in an infiniband network?
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