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Sun box does not see attached EMC LUNs

Posted on 2003-02-25
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How do I get my Solaris 8 Sun V880 server to see the attached EMC Symmetrix LUNs?

We are using an Emulex LP9002-L fibre card.  When I run the format command it does not pull in any disks.  I also ran a boot -r.  Any help would be greatly appreciated.

Thanks.
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Question by:gstuller
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8 Comments
 
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Expert Comment

by:ryanf
ID: 8020485
There are quite a few steps that need to be completed... First did you assign luns to the host via ESN manager?  

If so, is the /kernel/drv/lpfc.conf file setup to bind to the appropriate FA port?

Does you /kernel/drv/sd.conf have the necessary entries for the LUN's you have assigned?

With this information I might be able to help more...

-Ryan
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Author Comment

by:gstuller
ID: 8025098
The luns are assigned to the EMC port.  I can see them by using Emulex HBAnyware software.  It shows all the LUNs are visible to the fibre card.  I did change a parameter in the lpfc.conf file and now I can see some of the LUNs.  I can ONLY see LUNs at target 0.  I have entries in the sd.conf file to see all LUNs through target 1.  Help!!!!!!
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by:ryanf
ID: 8025475
Check your sd.conf... Make sure you have a specific entry for the LUN you are looking for.  Here is a quick example that you can use to create an entry:

name="sd" parent="lpfc" target=20 lun=0 hba="lpfc0"

In your lpfc.conf file you should have a persistant binding setting (If you are configured per what EMC recommends), here is where you will find what "target" your HBA has been assigned.  Use that value in the sd.conf target option.   Then use the HEX->DEC conversion of the LUN you assigned in the lun option.  Of course finally assigning it to the right HBA.  

If you could send me an email address I have a detailed doc I wrote on EMC and the Emulex cards.  

-Ryan
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Author Comment

by:gstuller
ID: 8025491
The luns are assigned to the EMC port.  I can see them by using Emulex HBAnyware software.  It shows all the LUNs are visible to the fibre card.  I did change a parameter in the lpfc.conf file and now I can see some of the LUNs.  I can ONLY see LUNs at target 0.  I have entries in the sd.conf file to see all LUNs through target 1.  Help!!!!!!
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Author Comment

by:gstuller
ID: 8025690
Do you have to use persistent binding?  We are running Solaris 8.  Do you have to do a reconfiguration reboot when you edit the lpfc.conf and sd.conf files of will devfsadm do the trick?  Gretchen.Stuller@cols.disa.mil.
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ryanf earned 200 total points
ID: 8026050
I have always done a reconfigure after touching anything that will change the way the machine see's the luns or when I present/remove luns.  

I prefer to use persitant binding... it's nice (to me) to know exactly how it is setup, and where I am connected :)

Can you see anything on the target 1 HBA?  if you can see everything through target 0, then your config or the lpfc.conf is ok... Next check the basic stuff (I am sure you have already done) link on the hba, correct FA, luns are actually assigned to the HBA, etc...

I have sent you an email with the emulex doc... Let me know if it helps...

-Ryan
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Author Comment

by:gstuller
ID: 8027256
Okay, stupid question. . .

I read in the doc you sent (thank you very much) that "Devices accessed with the fiber card (Emulex) are addressed behind a single target ID".  Does that mean that in the sd.conf file, for a single HBA, the entries will always be target 0 and whatever number of LUNs I am attaching?
 
My entries were target 0 (LUN 0-7) then target 1 (LUN 0-7).  Is that okay?  I guess I'm not sure what the above statement is saying.

Thanks again!!  
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LVL 2

Expert Comment

by:ryanf
ID: 8027453
You are correct.  They will all be listed under that target ID...
Yes, a single entry for each target id/lun is the "best practice", not the only way to do it... Matter of fact in my current environment it  was decided (before I arrived) not to do it this way... Problem I have now is, it takes time to ensure I am using the right volume :)  Can get frustraiting.

-Ryan  

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