topic Re: Fiber Channel Card problem. in Operating System - HP-UX

Fiber Channel Card problem.

ASIFKHAN — Fri, 18 Jul 2008 05:12:42 GMT

Hi All,

One of our server has been facing the problem since last 15 days.Problem is that whenever i am running the "dmesg" command or loooking into "syslog.info" file it is showing one message something like "Jul 11 08:18:51 rbik1_2 vmunix: 1/0/10/0/0: Unable to access previously accessed device at nport ID 0x1"

and along with this EMS tool is also installed over it and that is also giving messages with severity level = critical.

And H/w Path "1/0/10/0/0" :represents FC Card.

Can anyone please help me in interpreting and resolving this problem??
For better understanding I am attaching a text file plz find it.

Thanks
Mohd. Asif Khan

Re: Fiber Channel Card problem.

Sharma Sanjeev — Fri, 18 Jul 2008 06:39:50 GMT

Hi Mohd. Asif

First Check ioscan -fnH 1/0/10/0/0
ioscan -fnC fc and check the /dev/td or fcd

than use fcmsutil /dev/td?
and check the link is "ONLINE" or Awating Link Up"

Regards
Sanjeev

Re: Fiber Channel Card problem.

Sharma Sanjeev — Fri, 18 Jul 2008 06:44:10 GMT

As i have seen from output you pasted your systems have two FC cards the error is with
fc 1 1/0/10/0/0 td CLAIMED INTERFACE HP Tachyon TL/TS Fibre Channel Mass Storage Adapter
/dev/td1

so do fcmsutil /dev/td1 and check is it in ONLINE condition or not ?

Regards
Sanjeev

Re: Fiber Channel Card problem.

Jeeshan — Fri, 18 Jul 2008 08:30:00 GMT

Salam Asif

#ioscan -fnC fc

if it's CLAIMED state, then check the hardware statistics. like

#fcmsutil /dev/td0 (or whatever shows by the above command)

did you apply the latest patch related to HBA.

Re: Fiber Channel Card problem.

Asif Sharif — Fri, 18 Jul 2008 09:50:07 GMT

Salam Asif,

As per your log sent, see the web page.
http://docs.hp.com/en/diag/ems/dm_TL_adapter.htm#40

Event 40

* Severity: Critical
* Description: Unable to access previously accessed target. nport ID = 0x!
* Cause:An attempt to re-open a device which had been open earlier has failed.
* Action: There should be additional logging messages which will allow diagnosis of the problem.

ioscan output shows,

fc 1 1/0/10/0/0 /dev/td1 CLAIMED INTERFACE HP Tachyon TL/TS Fibre Channel Mass Storage Adapter
ext_bus 9 1/0/10/0/0.8.0.255.7 fcpdev NO_HW INTERFACE FCP Device Interface
autoch 2 1/0/10/0/0.8.0.255.7.11.0 schgr NO_HW DEVICE HP C7200
/dev/rac/c9t11d0
tape 4 1/0/10/0/0.8.0.255.7.11.1 stape NO_HW DEVICE HP Ultrium 1-SCSI
/dev/rmt/4m /dev/rmt/4mn /dev/rmt/c9t11d1BEST /dev/rmt/c9t11d1BESTn
/dev/rmt/4mb /dev/rmt/4mnb /dev/rmt/c9t11d1BESTb /dev/rmt/c9t11d1BESTnb
tape 5 1/0/10/0/0.8.0.255.7.11.2 stape NO_HW DEVICE HP Ultrium 1-SCSI
/dev/rmt/5m /dev/rmt/5mn /dev/rmt/c9t11d2BEST /dev/rmt/c9t11d2BESTn
/dev/rmt/5mb /dev/rmt/5mnb /dev/rmt/c9t11d2BESTb /dev/rmt/c9t11d2BESTnb
#fcmsutil /dev/td1

see the status,is it ONLINE ?

Regards,
Asif Sharif

Re: Fiber Channel Card problem.

Torsten. — Fri, 18 Jul 2008 10:02:44 GMT

You have a problem with your Ultrium tape library:

autoch 2 1/0/10/0/0.8.0.255.7.11.0 schgr NO_HW DEVICE HP C7200
/dev/rac/c9t11d0

this is an old galactica.

Did you change anything (the FC card in the lib)? Is it powered on?

Check the lib first.

If you changed anything, please tell us.
Special procedures are needed (fcmsutil ... replace_dsk ... probably).

Re: Fiber Channel Card problem.

ASIFKHAN — Fri, 18 Jul 2008 14:18:13 GMT

Hi Sanjeev ,
Thanx for your support. When i checked its status by using "fcmsutil" command i found its status online.

Waale-Kum-asalam Ahsan,

Firts-of-all thanx for your support.Yes ,i checked your suggested commands for FC Card over that server.As u asked that did u apply the latest patch? the answer is No i didn't apply any latest patch to HBA it is having Patch version of 2003.

Waale-Kum-asalam Asif,

It is really great to see your answer after the long time.Yes,this FC Card is online.
Thankyou for the link of EMS events.

Hello Torsten,

No ,i have not chnaged anything of library but due to power maintenance activity we just put the Library and servers into powered off state on 2 july 2008 and when we started it then it made the new device file for the 2 tape drive and from then this problem has been occuring.

I don't know but my mind is totally in the favour of your answer that may be this problem due to Tape Library and u are correct that it galactica 2/20 Tape library( very old one).Because i just rebooted that server yesterday(17-jul) and i have been monitoring for that error but no such error/log is found yet and i still monitoring its dmesg output and syslog.file output.

Torsten How can u say that it is because of tape library?? Plz justify I will be thankful to you.

Re: Fiber Channel Card problem.

Torsten. — Fri, 18 Jul 2008 17:12:02 GMT

The status of your library is NO_HW - not good.

It would be normal behaviour if you change the FC interface in the galactica. The nPort ID remains the same, but the WWN is different. The FC driver will not allow the card to login.

Any messages around "Unable to access previously accessed device at nport ID 0x1" in syslog?

Please post some more lines after this message!

Re: Fiber Channel Card problem.

ASIFKHAN — Sat, 19 Jul 2008 07:18:36 GMT

Hi Torsten,

Thanx for support and justification.

Re: Fiber Channel Card problem.

ASIFKHAN — Sat, 19 Jul 2008 07:28:52 GMT

Hello Torsten,

No such meaages are coming in syslog.log file.If in future any problem comes related to this then i will surely contact to you.

Re: Fiber Channel Card problem.

ASIFKHAN — Sat, 19 Jul 2008 07:31:26 GMT

One again Thanx to all for contributing your preciuos time to help me.