Test results of NFSv4 on Active/Passive clusters

[Yatin Manerker]

Hi 
 We have tested NFSv4 in Active/Passive HA clusters. I wanted to know
if we have missed out anything test scenarios. I have not found any
issues in the following test scenarios.

Here are the test results

Kernel: 2.6.16.21
Hardware details: Server -  > 32 bit hardware 2P -   P4 2Gb RAM
HA clusters : Active/Passive
Client hardware: 1P, P3-  512 MB RAM

Following scenarios are tested and passed for Active/Passive HA
clusters (iSCSI )

1.Client connection during failover and failback scenarios. Tested
with
40 clients. 
2.Large file transfer from 4 clients. Single file size of 8GB from
each
client.  Test was performed during failover and  failback scenarios.   

                        
3.File listing : File listing was done from 40 clients. (A single
directory having 0.9 million files).
4.Recovery test: Physical link breakage and Power down recovery when
client is running test(connect athon) on NFS mounted volume.
5.Backward compatibility : NFSv3/v4 client connecting NFSv4/v3 server
6.iozone and connect athon test executed for NFSv4 client in cluster
environment
  
            
Following scenarios are tested and passed for Active/Passive HA
clusters (DRBD ) (for single client )

1.Client connection during failover and failback scenarios. (V3 and V4
client)
2.Directory listing (v3 and v4 client)
3.Executed Connect athon test 
        
                   
Let me know if u have any comments

Regards,
Yatin