WWID of disk devices on HP-UX

[Michael Bornstein_1]

Does anyone know how to find (show) the WWID of a disk device with HP-UX? I can't seem to find this information.

[Sridhar Bhaskarla]

Hi,

It would be WWN (World Wide Name) of the controller corresponding to fiber channel.

You can find it using 'fcmsutil' command. Depending on the type of the card|driver, you will see the device files /dev/fcms* or /dev/td*. Or use the command

ioscan -fnkC fc

and it should display all the fiber channel interfaces with the corresponding device files. Find the device file based on the path of the controller and run fcmsutil on it. For ex., td0

fcmsutil /dev/td0

The number associated with "Port World Wide Name" is what you are looking for, for that controller.

-Sri

[Michael Bornstein_1]

This only shows the WWID of the HBA. What I'm looking for is the WWIDs of the disks connected to the HBA.

[Jeff Schussele]

Hi,

Well, if your fibre channel is switched then all you can get is the WWN of the fibre channel adapter & the WWN of the switch port it logs into.
But if it's a direct attached unit to like an FC10 JBOD enclosure then all the drives would have N-Port-IDs & they could be obtained with:

fcmsutil /dev/tdX get all

use the appropriate instance number for X

HTH,
Jeff

[Jeff Schussele]

You can also try

fcmsutil /dev/tdX -k ns_query_ports

And that first command should have been

fcmsutil /dev/tdX get remote all


HTH,
Jeff

[Michael Bornstein_1]

Those commands have a lot of output, but how to I match WWIDs with actual disks?

[szabolcsk]

Hello,

check this ioscan command below.

# echo $(uname) $(uname -r)
HP-UX B.11.31

# ioscan -P wwid -C disk

Class I H/W Path wwid
===============================
disk 2 64000/0xfa00/0x0 0x5000cca00ab23ce0
disk 3 64000/0xfe00/0x1 0x5000cca00ab23d6c
disk 17 64000/0xfa00/0xb 0x60060e8014224f00000224f000000f05

..

(disk n = /dev/rdisk/diskn)

Detailed description in iscan(1M) manual.

HTH