"ioscan -funC disk" Mystery disk

[Dan Hoyt]

I'm new to HP-UX and the XP512 but have years of sys admin and storage experience on other systems. So the following may be fairly basic for most of you.

When I run the "ioscan -funC disk" command I see the local disk and XP512 disk but don't know what the "disk subsystem" disks are. (See below)

dbqcomt2:/root#xpinfo -i

Device File ALPA Tgt Lun Port CU:LDev Type Serial#
================================================================================
/dev/rdsk/c33t0d0 cb 00 00 CL2C 01:0b OPEN-E 00032575
/dev/rdsk/c33t1d0 cb 01 08 CL2C 01:47 OPEN-E 00032575
/dev/rdsk/c33t2d0 cb 02 10 CL2C 01:2e OPEN-E 00032575
/dev/rdsk/c36t15d7 cb 0f ff CL2C 03:ff OPEN-E-CVS-CM 00032575


dbqcomt2:/root#ioscan -funC disk
Class I H/W Path Driver S/W State H/W Type Description
===========================================================================
disk 0 0/0/1/1.15.0 sdisk CLAIMED DEVICE HP 18.2GMAN3184MC
/dev/dsk/c1t15d0 /dev/rdsk/c1t15d0
disk 2 0/0/2/1.15.0 sdisk CLAIMED DEVICE HP 18.2GMAN3184MC
/dev/dsk/c3t15d0 /dev/rdsk/c3t15d0
disk 105 0/4/0/0.1.23.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-E
/dev/dsk/c33t0d0 /dev/rdsk/c33t0d0
disk 107 0/4/0/0.1.23.0.0.1.0 sdisk CLAIMED DEVICE HP OPEN-E
/dev/dsk/c33t1d0 /dev/rdsk/c33t1d0
disk 25 0/4/0/0.1.23.0.0.2.0 sdisk CLAIMED DEVICE HP OPEN-E
/dev/dsk/c33t2d0 /dev/rdsk/c33t2d0
disk 109 0/4/0/0.1.23.0.0.3.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t3d0 /dev/rdsk/c33t3d0
disk 110 0/4/0/0.1.23.0.0.4.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t4d0 /dev/rdsk/c33t4d0
disk 111 0/4/0/0.1.23.0.0.5.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t5d0 /dev/rdsk/c33t5d0
disk 112 0/4/0/0.1.23.0.0.6.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t6d0 /dev/rdsk/c33t6d0
disk 113 0/4/0/0.1.23.0.0.7.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t7d0 /dev/rdsk/c33t7d0
disk 114 0/4/0/0.1.23.0.0.8.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t8d0 /dev/rdsk/c33t8d0
disk 115 0/4/0/0.1.23.0.0.9.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t9d0 /dev/rdsk/c33t9d0
disk 116 0/4/0/0.1.23.0.0.10.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t10d0 /dev/rdsk/c33t10d0
disk 117 0/4/0/0.1.23.0.0.11.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t11d0 /dev/rdsk/c33t11d0
disk 118 0/4/0/0.1.23.0.0.12.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t12d0 /dev/rdsk/c33t12d0
disk 119 0/4/0/0.1.23.0.0.13.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t13d0 /dev/rdsk/c33t13d0
disk 120 0/4/0/0.1.23.0.0.14.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t14d0 /dev/rdsk/c33t14d0
disk 121 0/4/0/0.1.23.0.0.15.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c33t15d0 /dev/rdsk/c33t15d0
disk 26 0/4/0/0.1.23.0.1.0.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 27 0/4/0/0.1.23.0.1.1.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 28 0/4/0/0.1.23.0.1.2.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 29 0/4/0/0.1.23.0.1.3.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 30 0/4/0/0.1.23.0.1.4.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 31 0/4/0/0.1.23.0.1.5.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 32 0/4/0/0.1.23.0.1.6.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 33 0/4/0/0.1.23.0.1.7.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 34 0/4/0/0.1.23.0.1.8.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 35 0/4/0/0.1.23.0.1.9.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 36 0/4/0/0.1.23.0.1.10.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 37 0/4/0/0.1.23.0.1.11.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 38 0/4/0/0.1.23.0.1.12.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 39 0/4/0/0.1.23.0.1.13.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 40 0/4/0/0.1.23.0.1.14.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 42 0/4/0/0.1.23.0.1.15.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
disk 43 0/4/0/0.1.23.0.1.15.7 sdisk CLAIMED DEVICE HP OPEN-E-CVS-CM
/dev/dsk/c36t15d7 /dev/rdsk/c36t15d7


Is this normal for HP-UX or could it be another problem with the XP512 or something else?

Thanks

[John Poff]

Hi,

We have an XP1024 and we have plenty of those entries also. They are normal. It's just how the XP array presents the disks and controllers.

The first time I saw them was when we were using an XP array in a D/R test, and it was confusing at first. If it is a disk device, I want to 'pvcreate' that bad boy and use it, but those aren't disks.

JP

[Sanjay_6 · Accepted solution]

Hi Dan,

This looks like an XP feauture called LUN Security (System Mode 111).

Take a look at this thread from itrc,

http://www2.itrc.hp.com/service/cki/search.do?category=c0&mode=id&searchString=KBRC00008326&searchCrit=allwords&docType=Security&docType=Patch&docType=EngineerNotes&docType=BugReports&docType=Hardware&docType=ReferenceMaterials&docType=ThirdParty


the itrc doc id is KBRC00008326. All the devices referred as HP DISK-SUBSYSTEM are probably "0" bytes. do a diskinfo to verify.

Hope this helps.

Regds

[Dan Hoyt]

Thanks for the quick response. It just doesn't make since why they show up.

I was thinking that it may have had something to do with lun-security on the XP512 or maybe the fact that no switch zoning is being done on the switches.

If anyone has any insight on the possible reasons these disk show up, I would be grateful.

[Dan Hoyt]

Thanks for you help on this guys!

[Dan Hoyt]

Good enough. The link gave me enough info to continue on.

Thanks!