Diamond Li wrote:
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?
By the diagram above, you're already load balancing it. Have clients 1,2
mount off server1's floating IP, clients 3,4 off server2, clients 5,6
off server3. If one of the servers fails it's IP fails over to one of
the surviving servers, and you'll get 4 clients on one server and 2 on
the other.
Note, however, that if different clients are accessing files in the same
directories, you'll get lock contention and locks will end up bouncing
between the servers, which will seriously hurt performance.
Gordan
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