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11-18-2013 01:32 AM
11-18-2013 01:32 AM
Lun number greater than 128 for hpux 11iv2
Hi ,
We had no problems whenwe awere assigning lun number till 127 , when mapping with host in 11iv2.
Butas soon as w touched 128 , we found that we are getting 8 paths instead of usual 4.
why is it so ??
for ex:
if lun no is 129 , we are getting
root #/ >ioscan -fnC disk|grep t0d0
/dev/dsk/c33t0d0 /dev/rdsk/c33t0d0
/dev/dsk/c40t0d0 /dev/rdsk/c40t0d0
/dev/dsk/c39t0d0 /dev/rdsk/c39t0d0
/dev/dsk/c41t0d0 /dev/rdsk/c41t0d0
/dev/dsk/c32t0d0 /dev/rdsk/c32t0d0
/dev/dsk/c42t0d0 /dev/rdsk/c42t0d0
/dev/dsk/c38t0d0 /dev/rdsk/c38t0d0
/dev/dsk/c43t0d0 /dev/rdsk/c43t0d0
instead of earlier one prior to 128 :
/dev/dsk/c33t15d0
/dev/dsk/c39t15d0
/dev/dsk/c32t15d0
/dev/dsk/c38t15d0
Someboldy please clear it for me .
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11-18-2013 05:21 AM - edited 11-18-2013 05:31 AM
11-18-2013 05:21 AM - edited 11-18-2013 05:31 AM
Re: Lun number greater than 128 for hpux 11iv2
You don't have 8 pathes per device, but 4 new devices on new controller instances:
c40
c41
c42
c43
Look at the hardware path, you should see the encoded LUN number there.
Example:
x/x/x.y.y.y.0.0.1 = LUN 1
x/x/x.y.y.y.0.15.7 = LUN 127
x/x/x.y.y.y.1.0.0 = LUN 128
x/x/x.y.y.y.1.0.1 = LUN 129
See the difference:
LUN 1 ... 0.0.1
LUN129 ...1.0.1
both will by c__t0d0, but a different c__
Hope this helps!
Regards
Torsten.
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