When you say the takeover didn't work, do you mean that the A controller didn't take over at all (you didn't have to do a giveback), or was it only the network that didn't fail over properly?  What other messages were seen when A tried to take over B?

-Brad

On Fri, Jun 12, 2015 at 11:07 AM, Sayla, Mustafa <MSAYLA@mesirowfinancial.com> wrote:

I recently upgraded one of my 7mode controller from 8.1P1 to 8.2.3P3 and ran into issue during the second controller upgrade. I installed the upgrade version on both the controller than performed the cf takeover from controller B to controller A and it went fine. I then waited about 10 minutes and did the cf giveback and that also went fine. after waiting another 10 minutes I tried the cf takeover from controller A to controller B and I got the version mismatch error. I then issued cf takeover –n and at the time controller A did not took over controller B but just rebooted controller B. This caused a downtime with our vmware farm as servers lost connection to the data store on controller B. This is with NFS protocol. I only see this error in the logs

 

Fri May 29 15:53:59 CDT [rddata1b: cf_takeover: kern.rc.msg:notice]: vlan: interface creation failed due to internal errors Partner vlan create command failed

 

This explains why the takeover did not work but does not explain why this happened in the first place. I have worked with Netapp and validated that the rc file is correct and we have done failover and failback in the past without any issue. I also did the failover and failback after this to rule out configuration issue but could not recreate it. I need to upgrade 3 more HA pairs and I want to know if anyone has seen this issue before and does this have anything to do with the upgrade.

 

Thank you

 

Mustafa Sayla

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