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Re: [Linux-cluster] Geographical load balancing & GFS related question!



On 25/11/2008, at 4:53 AM, Brain Stormer wrote:

I know Red Hat Cluster Suite relies on OpenAIS and GFS relies on DLM for locking,

So the question is am I capable to have a DRBD block device running in an active/active mode and have a GFS file system over it with the nodes located in different geographical locations ? considering that there is no multicast/broadcast between the 2 nodes in a cluster and whether DLM will be able to operate in that case.

Also having in mind that the connection between the 2 locations having the nodes is connected with a fiber-optics connections and the delay between the 2 server is not more than 3ms.

Your input is highly appreciated.


If your sites are linked with fiber then surely you can either span your VLAN across both sites, or configure multicast routing between a VLAN at each site?

You will need multicast between nodes for this to work; as far as I know, there is no other solution available.

Regards,
Tom


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