topic Re: MSA controller failover in HPE EVA Storage

MSA controller failover

Sajith P V — Thu, 27 Dec 2007 13:40:00 GMT

Hi Team,

I am facing a problem in MSA 1000 active/passive controller. controller failover is taking place when I reboot one of the windows cluster node. I am expecting some gud solution from u people.

thanks in advance

Sajith

Re: MSA controller failover

Steven E. Protter — Thu, 27 Dec 2007 13:47:51 GMT

Shalom,

If you expect a good solution, perhaps provide enough information for a decent analysis.

What is the wiring situation, e.g. sometimes a fiber cable is needed to connect the two controllers and enable proper failover.

Since this is apparently windows, posted in the HP-UX(a form of unix) forum, you might want to look at the event logs on this issue.

SEP

Re: MSA controller failover

Sajith P V — Sun, 30 Dec 2007 09:52:18 GMT

hi SEP,

The fiber cable connection done in such a way that each server in the cluster is connected to active and passive controllers.

Re: MSA controller failover

Davis Paul — Mon, 31 Dec 2007 09:24:57 GMT

hmmm ..enju puliyanu ketto...

Re: MSA controller failover

Donny Jekels — Mon, 31 Dec 2007 18:59:26 GMT

Sajith,

Since we're trying to help you while you keep us in the dark, Could you do me a favor and post the array diag report to this post.

peace
-dj

Re: MSA controller failover

Patrick Terlisten — Wed, 02 Jan 2008 12:01:54 GMT

Hello Sajith,

try to setup a "single hba centric zoing". To do this, please put one host port of the MSA and one host port from a server into one zone.

Hope this helps.

Best regards,
Patrick

Re: MSA controller failover

Sajith P V — Tue, 08 Jan 2008 10:11:21 GMT

Hi Guys,

I was busy for some days. here i attached the ADU report.

Re: MSA controller failover

Brian Steisslinger — Wed, 09 Jan 2008 14:53:28 GMT

Do you have a possible bad HBA on that node.

Which controller is active normally left or right?

My theory is that you have a bad HBA\path on that node. Securepath detected a path failure and moves everything to the secondary controller (left side). When you reboot the host everything fails back (because the host with the failed path is out of the picture) and then we he comes back up everything fails back to the secondary controller (the left ne)

Does this sound like your situation?

Re: MSA controller failover

Sajith P V — Sun, 20 Jan 2008 12:16:45 GMT

hi,
The thing is that the problem is now not with a particular node. the failover is not happening all the time I reboots the servers.

sajith.

Re: MSA controller failover

John Kufrovich — Mon, 21 Jan 2008 03:52:33 GMT

Sajith,

Your problem is a cabling issue.

Are you using single or dual ported HBA's?

Make sure you have HBAp1 -> switch 1 -> MSA C1 (right controller).

jk

Re: MSA controller failover

Sajith P V — Thu, 24 Jan 2008 10:22:29 GMT

Hi,

Cable issue was there for a single node. But problem is still there after clearing that issue.

regads,

Sajith

Re: MSA controller failover

Sajith P V — Thu, 24 Jan 2008 10:23:05 GMT

Hi,

Cable issue was there for a single node. But problem is still there after clearing that issue.here we are using dual HBA.

regads,

Sajith

Re: MSA controller failover

John Kufrovich — Thu, 24 Jan 2008 12:04:09 GMT

Sajith,
Are you using single or dual ported HBAs.

Can you attach a show_tech report from the MSA cli.

jk