Alternate paths are not visible

[Umamaheswara Reddy]

Hi There,
Today I have assigned new LUNs on SAN storage to our HP-UX server with 11i V3.But when I run the ioscan -m dsf, the alternate paths are not visible to the newly assigned disks.Please help me with this.

In the below output,disk34 to disk42 are newly assigned ones.

root.uxblrh05:(/) >ioscan -m dsf
Persistent DSF Legacy DSF(s)
========================================
/dev/pt/pt3 /dev/rscsi/c2t0d0
/dev/rdisk/disk3 /dev/rdsk/c1t0d0
/dev/rdisk/disk3_p1 /dev/rdsk/c1t0d0s1
/dev/rdisk/disk3_p2 /dev/rdsk/c1t0d0s2
/dev/rdisk/disk3_p3 /dev/rdsk/c1t0d0s3
/dev/pt/pt5 /dev/rscsi/c4t0d0
/dev/rdisk/disk11 /dev/rdsk/c5t0d0
/dev/rdsk/c3t0d0
/dev/rdisk/disk12 /dev/rdsk/c5t1d4
/dev/rdsk/c3t1d4
/dev/rdisk/disk13 /dev/rdsk/c5t1d5
/dev/rdsk/c3t1d5
/dev/rdisk/disk14 /dev/rdsk/c5t1d6
/dev/rdsk/c3t1d6
/dev/rdisk/disk15 /dev/rdsk/c5t1d7
/dev/rdsk/c3t1d7
/dev/rdisk/disk16 /dev/rdsk/c5t2d0
/dev/rdsk/c3t2d0
/dev/rdisk/disk17 /dev/rdsk/c5t15d1
/dev/rdsk/c3t15d1
/dev/rdisk/disk34 /dev/rdsk/c3t3d1
/dev/rdisk/disk35 /dev/rdsk/c3t3d2
/dev/rdisk/disk36 /dev/rdsk/c3t3d3
/dev/rdisk/disk37 /dev/rdsk/c3t3d4
/dev/rdisk/disk38 /dev/rdsk/c3t3d5
/dev/rdisk/disk39 /dev/rdsk/c3t3d6
/dev/rdisk/disk40 /dev/rdsk/c3t3d7
/dev/rdisk/disk41 /dev/rdsk/c3t4d0
/dev/rdisk/disk42 /dev/rdsk/c3t4d1

[Modris Bremze]

If you are connected to SAN via multiple FC interfaces, all of their WWNs should be specified when assigning disks. Looks like you only specified one of them. Just poking around in the dark, so maybe a more detailed information on your setup and `ioscan -kfnC disk` would be more helpful if this has nothing to do with your case.

[Torsten.]

Not sure what array you have, but maybe the device files are still not there yet (insf?) or the LUN is not visible over this path.

[Umamaheswara Reddy]

Hi,
I have assigned the LUNs to the both HBAs using I SAN administration GUI and I am able to view them in SAN administration GUI.I am attaching the ioscan output as well.

[Torsten.]

If not in ioscan, the server cannot see them (for whatever reason). Double check the "presentation" settings.

[Umamaheswara Reddy]

I am not getting any output when I run insf command.Can this be the reason for not being able to view the alternate paths?.

root.uxblrh05:(/) >insf -C disk
root.uxblrh05:(/) >

[Torsten.]

insf will create special device files for **visible** devices in that case; no device - no device file!

[Kapil Jha]

u can try from scratch
check storage thing then
#ioscan -fn
#insf -e

then check, one more thing ur quesion says u not able to see alternate path, are you able to see one disk.

BR,
Kapil+

[Duncan Edmonstone]

I notice these new LUNs appear to be on a different port - have you checked the director bits set on the symmm port to make sure they match those LUNs already presented (IIRC you need to set the SPC2 and OS2007 bits for 11iv3)

HTH

Duncan

[Chandrahasa s]

Hi,
There may be issue with zoning.

Provide "syminq" and "powermt display all" out put


Regards,
Chandra