[Linux-cluster] Configuration Between Real Servers and GFS Cluster

[Diamond Li]

thanks for your reply. I am trying to understand what you mean. for
instance, I have 6 clients and 3 GFS servers, they are divided into 3
different groups
    client1            GFS server1
    client2

    client3            GFS server2
    client4

    client 5           GFS server3
    client6

So my question is how to balance the workload between these 3 GFS
servers since they are hosting identical data?

anyone successfully implemented this using CTDB+GFS?




On Mon, Dec 28, 2009 at 4:50 PM, Gordan Bobic <gordan at bobich.net> wrote:
> Diamond Li wrote:
>
>> But my concern is: if I use HA solution, for instance I have 5 GFS
>> servers, but only one of them is serving nfs service. That means 1
>> server is overloaded, the other are starving in meantime.
>>
>> Is there any better solutions to make 5 GFS servers provide nfs
>> service concurrently?
>
> There is nothing to stop you from having NFS exports run on all of the nodes
> simultaneously. Divide up your clients into groups so that each group mounts
> a different NFS server, and have the floating IP of the NFS servers as a
> fail-over resource.
>
> There are, however, a lot of potential performance issues you will likely
> encounter in such a setup (attribute caching on NFS, lock caching on GFS,
> etc.).
>
> Gordan
>
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