You made me smile. 

Once upon a time - many years ago - I think I used to know what I was talking about. Then I moved into sales and 30 years of engineering was tucked away. Sometimes it likes to reach out for the sun again.

Thanks for the overview - it's nice to learn about the underlying details again.

Ron Argent
Director
TES Enterprise Solutions

Mobile: +44 (0)7999-576926
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West Lancashire Investment Centre, Maple View, White Moss Business Park, Skelmersdale, Lancs. WN8 9TG. Registered office: 10 Western Road, Romford, Essex England RM1 3JT. Registered in England & Wales. Company no. 08308394


-----Original Message-----
From: <email address hidden> [mailto:<email address hidden>] On Behalf Of ChristianEhrhardt
Sent: 16 June 2016 17:35
To: Ron Argent
Subject: [Bug 1592990] Re: HCPGIR450W CP entered; disabled wait PSW 00020000 80000000 00000000 00004502

For the protocol question - it is not FCP encapsulated in FICON - here a bit simplified:
I hope that keeps format :-)

+--------+           +--------------------+
| V7000  |           |  z/VM              |
|        |           |                    |         +-------+
|        |           |                    |         | Linux |
|        |   SCSI    |     EDEV           |   ECKD  | Guest |
|        +-----------+     Emulation      +---------+       |
+--------+   FCP     |                    | VRITUAL |       |
                     |                    |         +-------+
+--------+           |                    |
| DS8K   |           |                    |         +-------+
|        |   ECKD    |                    |  ECKD   | Linux |
|        +-----------+                    +---------+ Guest |
|        |   FICON   |                    | VIRTUAL |       |
|        |           |                    |         |       |
+--------+           +--------------------+         +-------+

FCP and FICON are alternative protocols you can drive via fiber.
ECKD and SCSI are the languages that that a driver can talk to a device (one level above the FCP/FICON thing).

So with EDEVs in z/VM for Ubuntu as a Linux guest it is actually the "same" as if you have a dasd disk on a DS8K.

Although the EDEV one it might have a few special attributes / characteristics.

--
You received this bug notification because you are subscribed to the bug report.
https://bugs.launchpad.net/bugs/1592990

Title:
  HCPGIR450W CP entered; disabled wait PSW 00020000 80000000 00000000
  00004502

Status in Ubuntu on IBM z Systems:
  Triaged

Bug description:
  zVM v6.3 zBC12 V7000 FICON SAN048B

  Installed Ubuntu on zBC12 with FICON attached (via SAN048B switches)
  using instructions at
  https://wiki.ubuntu.com/S390X/Installation%20In%20zVM.

  Installation build completed OK but IPL fails (after initial boot options appear and timeout to default) with following error message:
  HCPGIR450W CP entered; disabled wait PSW 00020000 80000000 00000000 00004502

  A trace was taken using:

  #CP TR SSCH RUN
  #CP IPL <ipldev>
  #cp tr end

  The resulting trace appears to fail at the same point in the trace on every IPL.
  Several builds have been attempted on different VMs with identical symptoms.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/1592990/+subscriptions

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