adding new disks with two paths via 2x A6685A in k-class server

[Carsten Hennig_1]

Hi, I installed two A6685A HBAs into a K420 running HP-UX 11.0. Installed patches and A6685A driver package, rebooted. Have now /dev/td0 and td1 which are online and should show the same two disks (two paths via two mds9509s). Well, ioscan shows the disks via td0 (as c2t0d0 and c2t0d1) and also shows them via td1, but without assigning device entries in /dev/[r]dsk !
fcmsutil get fabric / get remote all shows all expected wwn's correctly for both devices. What did I miss here ? Storage is HDS 9980V.

Thanks, Carsten

[Patrick Wallek · Accepted solution]

What happens if you do an:

# insf -e

Then do an ioscan again to check if you have defice files.

[Sanjay_6]

Hi,

If the disks are seen as claimed in the "ioscan -fnC disk" output, they are probably seen okay by the system. To create the device files run "insf -e". This is non-destructive and will not create a problem. Then do a "ioscan -fnC disk" once again.

Hope this helps.

Regds

[Carsten Hennig_1]

Hi Patrick,

great ! This works like a charme. I now see the new disks as c2t0d0 (c13t0d0 second path) and c2t0d1 (c13t0d1 second path). But I now also see c2t1d0 to c2t15d0 (same for c13) marked as HITACHI DISK-SUBSYSTEM. diskinfo says 0 KB as size. Is this a feature of the driver ?

Carsten

[Patrick Wallek]

I think that is probably a feature of 1) the HDS and how the LUNs are set up, or 2) How your switches are zoned and what the K420 is allowed to see.

[Ted Buis]

When you do the vgcreate you can put both paths and thus set up the pvlinks.

[Dean Johnson_10]

Hi Carsten

The diskinfo showing size 0 is due to LUN security set on the HDS. These are the other LUN's in the SAN but are not assigned to these servers so show no size.

Hope this helps