topic How to disable HBA in Operating System - Linux

How to disable HBA

George Barbitsas — Fri, 28 Nov 2008 17:02:35 GMT

Hi,

I am trying to find a way to disable/enable an HBA card....something like fcmsutil /dev/tdx disable/enable. I looked in scli interactive menu and I am not quiet sure whether its possble.

regards,

Re: How to disable HBA

Ivan Ferreira — Fri, 28 Nov 2008 18:14:07 GMT

When I need to "disable" an HBA, I do a portdisable on the san switch. This generally only for multipath testing purposes.

Â¿What are you trying to do?

Re: How to disable HBA

George Barbitsas — Fri, 28 Nov 2008 18:23:45 GMT

I am trying to do the same thing, but occasionnaly when a faulty fibre cable/gbic occurs I disable the card on the server....I know it is possible to do it from the switch, but my question is how to do it from the linux server.

On HPUX you could issue fcmsutil /dev/tdx enable/disable/reset, I am wondering whether there is a tool that enables me to do that or even as simple as echo 1 > /sys/class/whaever could do the job.

regards,

Re: How to disable HBA

Jeeshan — Sun, 30 Nov 2008 06:42:12 GMT

you may pull off the FC cable from host.:-)

check this link

http://download.qlogic.com/drivers/59065/readme_qlinstaller.htm

Re: How to disable HBA

George Barbitsas — Mon, 01 Dec 2008 12:21:51 GMT

.....The servers are in a different location, and I am not looking for a physical manipulation as stated above.

Re: How to disable HBA

skt_skt — Wed, 03 Dec 2008 18:36:42 GMT

i did understand your question/requirement. But not the logic. Why do you want to disable an HBA when a faulty fibre cable/gbic occurs? In this scenario paths from the related HBA becomes dead/degraded but come back online as soon as the issue is fixed. Also the LUN/disk would be available from the second HBA/paths and i assume you dont have a SPOF ..

Re: How to disable HBA

George Barbitsas — Wed, 03 Dec 2008 18:43:56 GMT

basically there is no way to disable the HBA....and yes I do need to disable the HBA when someone makes a mistake while zoning...usually I disable the the HBA or block port on switch.....

Anyone have an idea on how to disable HBA on suse linux?

regards.