English

» Contact HP

IT Resource Center Forums > Storage > storage area networks (SAN)

Monitoring fiber paths to MSA2000 with HP_fibreutils binaries

IT Resource Center


	»	Login
	»	Register
	»	My profile



	»	Search knowledge base
	»	Forums
	»	Patch database
	»	Download drivers, software and firmware
	»	Warranty check
	»	Support Case Manager
	»	Software Update Manager
	»	Training and Education
	»	More maintenance and support options



	»	Online help
	»	Site map

Member icons

HP moderator

Expert in this area

Member status


	ITRC Pro
	250 points

	ITRC Graduate
	500 points

	ITRC Wizard
	1000 points

	ITRC Royalty
	2500 points

	ITRC Pharaoh
	7500 points

	Olympian
	20000 points

	1-Star Olympian
	40000 points

	2-Star Olympian
	80000 points

How to earn points

Support forums FAQs

Question status

	Magical answer
	Message with a response that solved the author's question

Favorites status

	Add to my favorites

	Delete from my favorites
	Thread closed

Receive e-mail notification if a new reply is posted

Author

Subject: Monitoring fiber paths to MSA2000 with HP_fibreutils binaries

compiler

Nov 5, 2009 17:35:36 GMT

Hi.

I have a working system with a dual port HBA connected to an HP MSA2000 storage solution. Both HBA ports are connected to the MSA2000.

I need to write a script to monitor that both fiber paths are ready and no path has been lost.

I have the following binary available:

[root@fe04 hp_fibreutils]# ./adapter_info
/proc/scsi/qla2xxx/1: STATE=READY WWNN=5001438003b0f997 WWPN=5001438003b0f996
/proc/scsi/qla2xxx/0: STATE=READY WWNN=5001438003b0f995 WWPN=5001438003b0f994

The above "STATE=READY" can be used to monitor both data paths? Or they just refer to the status of the hba-port itself?

If a fiber cable is removed from one of the HBA port's, the above command would reflect it? What would be the value of STATE= in that case?

If not, how can I monitor it? Maybe a /proc entry? The best "alternative" I've found is the following:

[root@fe04 hp_fibreutils]# grep -i state /proc/scsi/qla2xxx/*
/proc/scsi/qla2xxx/0:Host adapter:loop state = <READY>, flags = 0x1a13
/proc/scsi/qla2xxx/1:Host adapter:loop state = <READY>, flags = 0x1a13

Thanks a lot.

Note: If you are the author of this question and wish to assign points to any of the answers, please login first.For more information on assigning points ,click here

Sort Answers By: Date or Points

Bharath Pingali Expert in this area

Nov 6, 2009 03:42:06 GMT Unassigned

Hello Compiler,

adapter_info will display HBA port status only.

As you are using both ports and OS is linux, i guess that you are using multipathing software (Device-Mapper).

Which linux version are you running?

multipath -ll | egrep -i "failed|faulty" should display if any paths fail or you can always grep for "failing" on "/var/log/messages".

Hope this helps.

-Thank You
Bharath

compiler

Nov 6, 2009 07:50:30 GMT N/A: Question Author

> As you are using both ports and OS
> is linux, i guess that you are using
> multipathing software (Device-Mapper).

Multipathing software, AFAIK, is not needed with the QLA drivers shipped with HP Proliant Support Pack.

You just configure the controllers as active-pasive failover:

[root@fe04 ~]# cat /etc/modprobe.conf.hba
options qla2xxx ql2xmaxqdepth=16 qlport_down_retry=30 ql2xloginretrycount=30 ql2xfailover=1 ql2xl
bType=0 ql2xautorestore=0xa ConfigRequired=0
remove qla2xxx /sbin/modprobe -r --first-time --ignore-remove qla2xxx && { /sbin/modprobe -r --ign
ore-remove qla2xxx_conf; }

So I can't use multipathing software binaries to determine link's status ...

Any other idea?

Santhosh Kumar Theyyan Expert in this area

This member has accumulated 2500 or more points

Nov 6, 2009 13:21:05 GMT Unassigned

Follwoign has been helpful for me

cat /proc/scsi/qla2300/1|grep -i dropped
Commands retried with dropped frame(s) = 0

Bharath Pingali Expert in this area

Nov 6, 2009 16:48:21 GMT Unassigned

Hello Compiler,

Check with your HP rep, MSA 2000 is not supported by Qlogic Failover.

You have to use device Mapper.

hope this helps.

-Thank You
Bharath

compiler

Nov 9, 2009 07:50:36 GMT N/A: Question Author

> Check with your HP rep, MSA 2000 is not
> supported by Qlogic Failover.
>
> You have to use device Mapper.

How is that possible?

I remember, when we installed the machine, to do a failover test while writing to the MSA, and after 20-30 seconds, the O.S. continued writing to the "alternate" path :-?

Uwe Zessin This member has accumulated 20000 or more points

Nov 9, 2009 09:53:29 GMT Unassigned

"Unsupported" does not mean: "nothing works".

I know one should not compare computers and cars, but think about this:

Driving on a motorway in the wrong direction is "unsupported". But sometimes people can make it over quite a distance without something bad happens.

In the computer world "Unsupported" often means:

- the vendor did not test a certain combination and cannot guarantee that it (MSA2000 with QLogic failover driver) works properly

- the vendor tested a certain configuration, found some problems and decided that he does not want to fix it, so he declares it "Unsupported"

Printable version


Privacy statement	Using this site means you accept its terms

© 2009 Hewlett-Packard Development Company, L.P.