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Our data centers are about that distance from me. I can do stuff remotely
and frequently do. The HMC is a blessing.
The GUI options may be different based on the version of HMC you are
running. Currently they are on a version of 10 but I bet there are a lot of
versions 8's still out in the field. This may be why you are having a
tough time finding the exact click on the GUI. The differences between the
older and the newer versions are drastic. Some people were dragged kicking
and screaming to the new versions and only did so when the older versions
would no longer support the newer Power systems. It was a shock to me too
but I find the newer version quite better.

I 'assume' you have iACS. On iACS go into Management, System
Configurations. Pick your system. Click the Console tab. Select HMC 5250
console. Put in the host name/IP address of your HMC. Once you've done
this it's quite easy to use iACS to click on Console, 5250 console. Now
click on Hardware Management Interface. Put in the host name or IP address
that your HMC uses to talk to your Power system. Also call your HMC
Management port. This will NOT be the same IP address you normally use to
connect to the system.
If you do not know the name or IP address of your HMC Management port but
you have access to your HMC you can get it from the HMC via General
Settings for the system (not your lpar of IBM i). System name and IP
You know, I kinda think I got off on a tangent...

pedbg may be easier from a putty client SSH session attached to your HMC.
You can search for hmc pedbg command line or some such thing for that.
Clue: Why didn't the hardware guy have you use the option in MGTOOLS to
Maybe because you're new he thought it would be easier for you to use the
other steps to ensure you created the user hscpe and have the remote
connection allowed to your hmc turned on by doing the manual steps.

I'm not sure about the "unassign" and I hope that translated well. There
are ways to reboot an adapter without IPLing your system. You have to be
real careful that you don't have disks attached to it and stuff but I do
this frequently for things like tape libraries. All of our stuff is
virtual but we still have to IPL the virtual adapter on occasion.
Once you gain experience it's pretty easy to be sure. For example:
8=Work with description
Record "Resource name"
Vary it off.
WRKHDWRSC *STG (your option may differ. It would help if you said what the
adapter does)
Resource Type-model Status
CMB04 6B25-001 Operational
DC04 6B25-001 Operational
KDVLVTL 3584-032 Operational
These contain only the tape device and no drives, etc.
CMB04 is the IOP. DC04 is the IOA.

1. Start a service tool
7. Hardware service manager
3=Concurrent maintenance
3. Locate resource by resource name. Use the IOP or the IOA
6=I/O debug
I normally do these in order
3. Reset I/O processor
4. IPL I/O processor
Exit sst.
Vary on the device, maybe with the reset option
and hope for the best

On Fri, Jan 20, 2023 at 2:02 PM Åke Olsson <konsult@xxxxxxxxxxxxxxx> wrote:


I am not familiar with doing any hardware work on the platform. I am an
applications and database specialist with experience on the midrange series
that goes back to the dark ages or thereabouts.


I work by remote VPN connection to do applications stuff for a company
located some 200 km south of where I live. They have no tech on site but
they do have their own Powr-9 machine in-house that they run their ERP
package as well as their email system (Domino) on.

Now recently the machine has reported some problems with an adapter (learnt
by asking that it has something to do with the RAID controller).

The IBM tech has (forwarded to me through the owner of the client company)
asked for a number of things.

First a couple of reports through the service utility. Fine did that.

Second asked to “unassign” the adapter. I have no clue how that is done.
VRYCFG is not for adapters…

Third asked to install QMGTOOL library and create and mail a SYSSNAP file.
Did that (install was a bit of a hassle though but worked in the end).

Fourth asked to create something called PEDBG using the HMC. This task –
(together with the “unassign” thing) is where I am stumped. I have never
worked with the HMC in my life. Checked if it was possible to access
the Navigator ut apparently not. Nothing in the ACS activities either. Saw
something about a web interface something like the navigator (link shown in
youtube video) but that did not work either. Is the HMC a device such as a
PC physically connected to the machine or is there some kind of setup that
is missing?

Any hint about how to perform task 2 and 4 w/o travelling to the client
would be really helpful!

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