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LUN id > 7 on VA7400 not seen on HP-UX

Kurt Beyers.
Honored Contributor

LUN id > 7 on VA7400 not seen on HP-UX

Hi,

I've got a HP9000 L1000 (HP-UX 11.11)server that is connected via a fibre switch to a VA7400.

If I create a LUN on the VA with a LUN id larger than 7, it can't be seen on the HP server even after a 'ioscan -fnC disk' or 'insf -e'. When the LUN id is smaller than 7, an ioscan finds the LUN directly.

And you can create LUN's up to an ID of 1024, but if I don't see them from the HP-UX server...

Any suggestions are highly appreciated.

Thanks,
Kurt
12 REPLIES
Bill McNAMARA_1
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Can you post up the ioscan -fnk output.

Note that the d7 is a scsi limitation, not necessarily an array limitation.

LUNs greater than 7 are addressed via VSA (Volume Set Addressing) and the 8th lun cannot be represented in 3bit binary (d field) so it 'spills' over into the t field.

ie:

t1d0
t1d1
t1d2
t1d3
t1d4
t1d5
t1d6
t1d7
t2d0 (this is lun 8)
t2d1 (this is lun 9)

etc...
Later,
Bill
It works for me (tm)
Vincent Fleming
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

If you're not seeing some LUNs, make sure you are patched up-to-date. PHKL_21607 is an important one... but if you can bring yourself up to current, that would be best.

Good luck!
No matter where you go, there you are.
Kurt Beyers.
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Bill,

Thanks, I know that you can calculate the LUN id in the VA from the hardware path of the disk. The ioscan shows only the disks with a LUN id of the VA that is lower or equal than 7 (and they have a status of claimed). I've did an ioscan -fnk as well, the new LUNS with an ID greater than 7 were not detected

Vincent,

it is a new server and the patch bundles from the support plus CD of march 2002 are installed, so the patching should be up to date.

Thanks,
Kurt
Vincent Fleming
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Kurt,

My next guess is your Secure Manager configuration. Assuming you are using SM, you should check that permissions and WWN's are correct.

Let us know how you make out.
No matter where you go, there you are.
Kurt Beyers.
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Vincent,

I've disabled the Secure Manager to rule out this possibility. Thanks for the suggestion.

Kurt
Vincent Fleming
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Hmm...

I haven't had this trouble before... so I'm a little at a loss as to what it could be.

Can you post your array configuration? (armdsp command output) Please post as much detail as possible.

Perhaps one of us will see something in there.
No matter where you go, there you are.
Kurt Beyers.
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

I'll post it tomorrow.

Kurt
Kurt Beyers.
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Here is the output of armdsp -a alias:

Vendor ID:______________________________HP
Product ID:_____________________________****
Array World Wide Name:__________________****
Array Serial Number:____________________****
Alias:__________________________________****
------------------------------------------------------------

SUB-SYSTEM SETTINGS

RAID Level:___________________________HPAutoRAID
Auto Format Drive:____________________On
Capacity Depletion Threshold:_________100%
Queue Full Threshold:_________________750
Queue Full Threshold Maximum:_________4096
Enable Optimize Policy:_______________True
Enable Manual Override:_______________False
C1 Port Behavior:_____________________HPUX
C2 Port Behavior:_____________________WinNT
C1 Port Topology:_____________________Point To Point, Fabric Attached
C2 Port Topology:_____________________Point To Point, Fabric Attached
Manual Override Destination:__________False
Language:_____________________________English
Read Cache Disable:___________________False
Rebuild Priority:_____________________Low
Security Enabled:_____________________True
Shutdown Completion:__________________0
Subsystem Type ID:____________________1
Unit Attention:_______________________True
Volume Set Partition (VSpart):________False
Write Cache Enable:___________________True
Write Working Set Interval:___________8640

RESILIENCY SETTINGS

Simplified Settings:__________________Normal Performance (Default)
Enable Secure Mode:___________________True
Disable NVRAM on UPS Absent:__________False
Disable NVRAM on WCE False:___________False
Disable Read Hits:____________________False
Force Unit Access Response:___________1
Lock Write Cache On:__________________True
Performance Goal Configuration:_______Normal Performance
Resiliency Threshold:_________________4
Single Controller Warning:____________True

DISK SETTINGS

Auto Include:_________________________On
Auto Rebuild:_________________________On
Hot Spare:____________________________None
Max Drives per Loop Pair:_____________105
Max Drives per Subsystem:_____________105

ENCLOSURE SETTINGS

Max Enclosures per Loop Pair:_________6
Max Enclosures per Subsystem:_________6

LUN SETTINGS

LUN Creation Limit:___________________1024
Maximum LUN Creation Limit:___________1024
Migrating Write Destination:__________False

SCRUB SETTINGS

Scrub Restart Period:_________________7190 minutes
Scrub State:__________________________Idle, initialized

OPERATIONS IN PROGRESS

None

WARNINGS

None
Vincent Fleming
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Kurt,

The VA was designed with redundancy in mind, and was not intended to be run with the two controllers in different host modes. You need to use the armhost command to set the host behavior on a LUN by LUN basis. I think this is your problem.

Please try configuring with the armhost command, and please do let us know the results.

Barring that, you should get the response center involved.
No matter where you go, there you are.
Kurt Beyers.
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Vincent,

I'll swith the second controller towards HPUX as well and use the armhost command to upload a host table to specify the OS on a LUN per LUN basis.

But the second controller is not connected for the moment to a switch, so I doubt that this would cause the problems.

I'll update the thread next week.

Kurt

Vincent Fleming
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Kurt,

My point was that although the VA will allow you to set the controllers to different OS modes, I'm pretty sure they never intended it to be run in that configuration. It may be confusing the controllers a bit, even if it isn't connected. The controllers do talk to each other.

Let us know how you make out.

Good luck!
No matter where you go, there you are.
Kurt Beyers.
Honored Contributor

Re: LUN id > 7 on VA7400 not seen on HP-UX

Ok,

I've followed the advise of Vincent:

-set the default OS for both controllers to HPUX
-uploaded the host table towards the VA in which I've specified the OS of the fibre cards that are connected to the VA

First I still couldn't see the LUN's with a LUN id > 7, but after a reboot of the servers they were visible. So this issue is solved.

Thanks Vincent for the assistance,

Kurt