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тАО11-27-2005 11:36 PM
тАО11-27-2005 11:36 PM
Unable to see device files for newly created LUN's from XP
I am unable to see device files for newly created LUN's from XP Storage.
0)I can see devices but not the device files
1)I have tried insf -e
2)At present system has 640LUN's (8HBA * 80LUN's)
3)What is the Max device files supported for HP-UX 11.11
4)Can someone assist me to how to proceed and troubleshoot??
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тАО11-27-2005 11:39 PM
тАО11-27-2005 11:39 PM
Re: Unable to see device files for newly created LUN's from XP
Have you run 'ioscan -fnC disk' before 'insf -e'?
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тАО11-27-2005 11:44 PM
тАО11-27-2005 11:44 PM
Re: Unable to see device files for newly created LUN's from XP
Yes i have run Ioscan before insf
I am getting following but no device file for it
disk 2753 1/8/0/0.126.5.0.1.5.7 sdisk CLAIMED DEVICE HP OPEN-V
disk 2754 1/8/0/0.126.5.0.1.6.0 sdisk CLAIMED DEVICE HP OPEN-V
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тАО11-27-2005 11:45 PM
тАО11-27-2005 11:45 PM
Re: Unable to see device files for newly created LUN's from XP
insf -C disk is the only way to recognize disk where the WWN name has been set to the fibre channel interface of the server.
For full use of the disk, you will probably need to restart.
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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тАО11-28-2005 12:10 AM
тАО11-28-2005 12:10 AM
Re: Unable to see device files for newly created LUN's from XP
Thanks for your reply.
I have rebooted the server also,but no luck
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тАО11-28-2005 12:21 AM
тАО11-28-2005 12:21 AM
Re: Unable to see device files for newly created LUN's from XP
What i can see from what you write it seems the disk are configured on the XP in the wrong zone. Maybe a windows or a AIX zone.
Can you check this.
grtz. Mark
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тАО11-28-2005 12:32 AM
тАО11-28-2005 12:32 AM
Re: Unable to see device files for newly created LUN's from XP
As said earlier please do check the Host mode for which these Host group is created in XP side.
Since If you present the Luns for wrong Host Group then you may face this problem
Also Hp is having a Max dvice file limit.It cannot switch to more no of Devices files for a single Physical device.
But as per your configuration what I could understand is You have 80 Physical Luns presented thro 8 HBA's
Keep in mind to avoid the maximum no of device files getting created for a single Physical device you can Present these Luns to Single pair of HBA.On which one will act as a redundant so total no of device is 160.
Also there is some best practices available for LUN allocation to HP host.
Like in a 2GB fiber Environment you can present 1TB of disks thro One path for Best I/o Performance again it depends on the Emulation what you use.
So please do verify the way your LUNS are allocated from the XP.
Regards
S.Arunkumar
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тАО11-28-2005 12:48 AM
тАО11-28-2005 12:48 AM
Re: Unable to see device files for newly created LUN's from XP
Devices are configured to correct Zone.
I am able to see the devices on HP-UX
Hi Arun,
1) Can i know what is the Max device file limit?? Any document/links??
2)I have total 8 HBA's and Each HBA can see 80 LUNS each.So the total is 640 Luns
3)Anyother possible options??
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тАО11-28-2005 01:39 AM
тАО11-28-2005 01:39 AM
Re: Unable to see device files for newly created LUN's from XP
do a dmesg and see if it mentions channels above 255. This will confirm your issue.
or do
ioscan -f > ioscan.out
grep ext_bus ioscan.out | sort -n +1 | more
Look at the last number to the left at the end of the last page of output. That will show you ran out of channels or not.
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тАО11-28-2005 01:57 AM
тАО11-28-2005 01:57 AM
Re: Unable to see device files for newly created LUN's from XP
Normally, after your XP Admin presents LUNS to your HP-UX server you do:
ioscan
insf -e
xpinfo -ui
Check with "xpinfo -i" output on your server with your XP Admins CU:LDEV list of assigned LUNS to that server.
There should be no reason why your newly created LUNS's cXtYdZ devices will not be seen.