[Ocfs2-users] Generic question about cluster communication (with user mode heartbeat)

[Petri Asikainen]

No, I have not thinking about bonding, maybe I should. ;)

I assumed that with user mode heartbeat all communication between nodes
goes via hearbeat. But that not seems be the case.

An other generic question? Does bonding work nicely between switches? Or
does it require some special feature avaible switch?

Regards,

Petri





Sunil Mushran wrote:
> When eth0 went down, ocfs2 (specifically o2net/o2dlm) was unable to talk
> to the other node. So the result is expected.
> 
> Have you looked into bonding the two and using that bonded interface for
> both heartbeat and ocfs2?
> 
> Sunil
> 
> Petri Asikainen wrote:
>> I'm using ocfs2 on sles 10 (sp2)with user mode heartbeat on two node
>> cluster.
>>
>> ocfs2-tools-devel-1.4.0-0.5
>> ocfs2-tools-1.4.0-0.5
>> ocfs2console-1.4.0-0.5
>> heartbeat-2.1.4-0.4
>>
>> heartbeat clustering is configured to use two separate network
>> interfaces eth0 and eth1. iSCSI SAN is accessed via eth2 and eth3.
>>
>> on /etc/ocfs2/cluster.conf I have configured ocfs2 cluster nodes with
>> addresses from interface eth0.
>>
>> What happens if interface eth0 (or switch behind it) goes down when
>> cluster is on line? Do nodes still see others/heartbeat via eth1?
>>
>> Reason I'm asking this that during offline hardware maintenance network
>> cable (eth)  of second node was disconnected. And when I was trying to
>> start cluster I cannot get ocfs2 up before I connected that cable.
>>
>> User mode heartbeat and other cluster services were working fine at same
>> time with degraded network connections.
>>
>> Regards
>>
>> Petri Asikainen
>>   
>