Powerpath shows nothing on a HP Machine

Question

Hello everyone,

I currently encounter a problem.
At my customer, the HP machine used pvlink to manage the failover, but want now to use Powerpath
I thus installed powerpath 5.1 on one of the machines , change the initiator on Navisphere into mode Failover 0 and Clariion Open. I then launched a powermt config.

But I do not see anything when I make a powermt display dev=all nor when I make a very short display.

I specify that I checked the compatibility of the version of the drivers with PowerPath 5.1

Can you help me?

Thanks.
Jean Pierre

Conor · Answer

Goto connectivity status on Navisphere Manager
Chose the HP-UX HBA
Click Info
Your settings should be as follows:
Initiator Type: - HP No Auto Trespass
HBA Type: Host
ArrayComPath: Enabled
Failover Mode: 1
Unit Serial Number: Array

Also you may want to edit the agent.config file as per emc3038

Good Luck!

MarcT2 · Answer

Have you licensed PowerPath?Check with a 'powermt check_registration' command.If it's not, use 'emcpreg' to add a license key.BR,Marc

certification · Answer

There is actually no license for Powerpath.
Should it nevertheless show HBAs?
I use to heard powerpath could work without license but only detects failover on storage side and supports only one HBA.
Am i right?

Conor · Answer

you are correct, PP should still display the LUNs even without the license.

Your initiator settings on the CLARiiON array are set incorrectly to "CLARiiON open", they should be "HP No Auto Trespass" --> I believe this is the issue...

certification · Answer

Okay.I should modify the initiator type as suggested. I would try monday when the HP machine will be available for powering down because this server use the Boot on SAN technology.I'll certainly remind you when the operation would be over.Thanks a lot.

Navin-Swn_9 · Answer

If it shows 2 paths as Unlic. use powermt set policy=co dev=all class=clariion

emcuser12 · Answer

As indicated by CB, make Corrections to the PP failover settings.

If you see only one path after changing the settings then go to /etc on the HPUX host
# mv powermt.custom powermt.custom.old and Reboot the host

The Host would read the PP configuration and create the powermt.custom file on reboot.

Then do a powermt display to see if you could see both paths to the LUN

certification · Answer

Thanks to everyone.I did as suggested, so:- Modify the initiator type- Disconnect the host from SG- Reconnect the host to SGAnd that works fine!

RRR · Answer

I've only seen this once before and the solution was to upgrade the driver.

PowerPath

Powerpath shows nothing on a HP Machine

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