RE: Troubleshooting failure of new virtual optical drives on IBM i Host lpar failing to appear on IBM i guest lpar

About your point two. Are you saying that the NWSD for optical should not say:
Allowed device resources . . . . ALWDEVRSC *UNRSTD
Restricted device resources . . RSTDDEVRSC *NONE
But instead should individually name them like the following:
Allowed device resources . . . . ALWDEVRSC OPTVRT01, OPTVRT02...
Restricted device resources . . RSTDDEVRSC *NONE

About your point 1. I have varied off a NWSD supporting disk (accidentally) but then varied it back on. Other than a hang during that time it didn't seem to create any ill effects. But I accept your point.

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of DrFranken
Sent: Friday, April 5, 2019 9:30 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Troubleshooting failure of new virtual optical drives on IBM i Host lpar failing to appear on IBM i guest lpar

Two things neither more important than the other.

1) NEVER share optical or tape on the same NWSD as disk. Wye? Because you cannot vary the thing off and change it if it has disk on it. If it has only optical and tape you can vary off change vary on, test, muck, break etc with no harm to the guest.

2) Be vewy vewy careful about DEVICE vs RESOURCE. On the NWSD when it asks what you are sharing or excluding it's asking for RESOURCE names.
When you delete virtual optical on the host (e.g. DLTDEvD OPTVRT01) and then create a new one (e.g. CRTDEVOPT BOB ) it will get a NEW resource name such as OPTVRT02. That resource name needs to be in the NWSD NOT "BOB".

- Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 4/5/2019 9:23 AM, Rob Berendt wrote:

I am having an issue seeing virtual optical drives created on my host lpar of IBM i on my guest lpars of IBM i.
I am told they should just automatically appear.

One of the things IBM had me check was that QAUTOCFG was enabled on the guest.

They also had me delete any existing virtual optical drives on the guest pointing to the host as potential conflicts.

IBM also had me go to the host and run WRKNWSD guestname* Only one
should have
Allowed device resources . . . . ALWDEVRSC *UNRSTD
Restricted device resources . . RSTDDEVRSC *NONE
The others should have:
Allowed device resources . . . . *UNRSTD
Restricted device resources . . *ALLOPT
To change these you should
- power off the guest.
- vary off the appropriate NWSD's
- make the changes.
- vary on the NWSDs
- Start the guest

IBM also said that if you ever want to do an OS upgrade from these
optical drives, and therefore need to boot from it, then you should do
the following
- change your guest's partition profile on the HMC to change the Tagged I/O's Alternate Restart Device to where the optical drives are served up. On this lpar it happens to be the same as the load source drive.
- activate the guest from profile
- disable any other alternate installation devices you may have
created (like the tape drive you originally restored this lpar from)
using the steps "Disabling an alternate installation device" found at
https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/rzarm/sc41530
4.pdf

I followed these steps. I also deleted and recreated the virtual optical drives on the host to serve up these image catalogs. However I do not see any new optical drives on the guest. Help.

Also:
Should I change all NWSDs to
Restricted device resources . . *ALLOPT
And create a new NWSD just for optical only? This is one way to differentiate between load source and optical. This would also entail changing the guest lpar profile to tag this new nwsd as the alternate restart device.


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

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