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newly added disk to system

Amit Manna_5
Advisor

newly added disk to system

hi,
I have a HP Unix 11.0 system which has DGC array attached to it. Storage team has added 256 GB to it and made RAID 1 so 128 GB was allocated to the system.
I asked storage to present 16 GB * 8 LUNs.

Now in dmesg i can see below 0/8/0/0.8.0.0.0.1.2 sdisk
0/8/0/0.8.0.0.0.1.3 sdisk
1/8/0/0.8.0.1.0.1.2 sdisk
1/8/0/0.8.0.1.0.1.3 sdisk


Does it mean two LUNs are assigned?

ioscan -fnH 0/8/0/0.8.0.0.0.1.2
Class I H/W Path Driver S/W State H/W Type Description
================================================================================
disk 25 0/8/0/0.8.0.0.0.1.2 sdisk NO_HW DEVICE DGC C4400WDR1
/dev/dsk/c5t1d2 /dev/rdsk/c5t1d2

please advice.

4 REPLIES
Fabio Ettore
Honored Contributor

Re: newly added disk to system

Hi,

it could be that you have 2 LUNs with each one with 2 paths, please post ioscan -fn.
Anyway you have also NO_HW which is not a good point, system could have problems to recognise the new added devices.

Best regards,
Fabio
WISH? IMPROVEMENT!
Steven E. Protter
Exalted Contributor

Re: newly added disk to system

Shalom,

ioscan -fnC disk

At this point I would say the new LUN is nor properly divided or assigned.

insf -C disk

Reboot. That might make the disk recognized.

What has been presented so far is one gigantic disk.

SEP
Steven E Protter
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Ganesan R
Honored Contributor

Re: newly added disk to system

Hi,

First get the confirmation from the storage team that they assigned the LUN's to this host properly.

After that run ioscan and insf -ev to get the LUN's recognised. Then see if the disk's are showing in ioscan -funC disk

The message from dmesg buffer might be little old. Don't rely on that.
Best wishes,

Ganesh.
Johnson Punniyalingam
Honored Contributor

Re: newly added disk to system

Hi Amit ,

I would also like to check,

# insf -e
# cd /dev/rdsk
# ls -lrt
will show recerntly added "LUN"

Thanks,
Johnson
Problems are common to all, but attitude makes the difference