topic Re: IO error when presenting LUN to RH 3 update 8 in Operating System - Linux

IO error when presenting LUN to RH 3 update 8

ALMGRP — Fri, 07 May 2010 06:02:09 GMT

Hi,
I am getting an IO error when I present a 4th disk to my RedHat 3.8 server.
The server is connected to an EVA5000 and already has 3 Luns presented, it also has access to an MSl6000 tape library. All seems well untill I present another LUN from the EVA.
The Lun appears in /proc/scsi/scsi, but not in Fdisk. Demesg shows

Device 08:30 not ready.
I/O error: dev 08:30, sector 0

The server has two QPA2300 HBA's, 3.03.19. Driver 7.07.04b6. I have removed one path but still get the same error.

I have attached an example of the error and the /proc/scsi/scsi file.

Any ideas would be appreciated.

Thanks.

Re: IO error when presenting LUN to RH 3 update 8

P Muralidhar Kini — Fri, 07 May 2010 10:32:50 GMT

Hi,

Check this link out
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=977467

This may be related to the problem you have encountered.

Regards,
Murali

Re: IO error when presenting LUN to RH 3 update 8

ALMGRP — Fri, 07 May 2010 11:39:34 GMT

Thanks,
That done the trick.
I changed the prefered path to B failover only and rescaned the bus. Fdisk seen the new lun OK. I then changed it back to no preference and rebooted the box (just because I could) and it still sees the new LUN, no errors in dmesg.

Thanks again.

Re: IO error when presenting LUN to RH 3 update 8

P Muralidhar Kini — Fri, 07 May 2010 11:52:02 GMT

Hi,

>> Thanks,
>> That done the trick.
Great.
You are most welcome.

If you face any other problems, this forum is there to help you!.

Regards,
Murali