Skip to Main Content
IBM Power Ideas Portal


This portal is to open public enhancement requests against IBM Power Systems products, including IBM i. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).


Shape the future of IBM!

We invite you to shape the future of IBM, including product roadmaps, by submitting ideas that matter to you the most. Here's how it works:

Search existing ideas

Start by searching and reviewing ideas and requests to enhance a product or service. Take a look at ideas others have posted, and add a comment, vote, or subscribe to updates on them if they matter to you. If you can't find what you are looking for,

Post your ideas
  1. Post an idea.

  2. Get feedback from the IBM team and other customers to refine your idea.

  3. Follow the idea through the IBM Ideas process.


Specific links you will want to bookmark for future use

Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.

IBM Unified Ideas Portal (https://ideas.ibm.com) - Use this site to view all of your ideas, create new ideas for any IBM product, or search for ideas across all of IBM.

ideasibm@us.ibm.com - Use this email to suggest enhancements to the Ideas process or request help from IBM for submitting your Ideas.

Status Not under consideration
Workspace IBM i
Created by Guest
Created on Aug 21, 2019

HMC PWRDWNSYS

When stopping an IBM i LPAR through the HMC using the operating system a PWRDWNSYS command is initiated which bypasses the Exit Point Program for the POWER DOWN exit point.


Use Case:

When using the HMC to shutdown an IBM i LPAR you are unaware that the exit point of the shutdown is bypassed. This will prevent stopping IBM i applications stopping in an orderly manner. Furthermore it is an exception to the rule of a "normal" PWRDWNSYS.


Idea priority High
  • Guest
    Nov 12, 2019

    Rudi, thank you for finding the CPI092F message. It is another opportunity to document that the user exit programs do not get run when the HMC shutdown options are used. Not running the user exits in this case is intentional and we do not plan to change to run them from the HMC operating system shut down options. Those new operating system HMC shutdown options were added to attempt to avoid an abnormal IPL after having to use the HMC to power off a partition. The main reasons to use the HMC options are when you cannot access the system to run the PWRDWNSYS command and when the PWRDWNSYS command does not complete. The user exit programs can prevent a power down. The HMC options can be used to bypass the exits when the system must be taken down. The user exits and the command processing program associated with the PWRDWNSYS command require an environment to run in - a user job and an associated IBM i user profile. The HMC does not work like other GUIs such as iNav where an IBM i user signs on and server jobs are established. The HMC connects at a lower level in the operating system. The power down HMC requests result in an event from SLIC and system jobs within the operating system perform the portion of the power down that ends subsystems and user jobs. To help explain we can compare what you saw in the history log from an HMC power down to the PWRDWNSYS command (adding jobs names from F9). QSYSARB4 and QSYSARB5 are system jobs where part of the power down process runs. DSP01 is the user job where the PWRDWNSYS command runs. QWCEPGPD is a batch job running one of the user exit programs.

    HMC option:

    QSYSARB5 CPI092F PWRDWNSYS *CNTRLD RESTART(*NO) command in progress.
    QSYSARB4 CPI0995 PWRDWNSYS command issued with parameters specified.
    QSYSARB4 CPF0930 PWRDWNSYS command in progress.

    PWRDWNSYS:

    DSP01 QIBM_QCA_CHG_COMMAND
    DSP01 QIBM_QCA_RTV_COMMAND
    DSP01 QIBM_QWC_PWRDWNSYS-PWRD0200
    QWCEPGPD QIBM_QWC_PWRDWNSYS-PWRD0200
    DSP01 QIBM_QWC_PWRDWNSYS-PWRD0100
    QSYSARB4 CPI0995 PWRDWNSYS command issued with parameters specified.
    DSP01 CPF0901 PWRDWNSYS command issued by user QSECOFR and is being processed.
    QSYSARB4 CPF0930 PWRDWNSYS command in progress.

    Hope this helps you understand what you are seeing.

  • Guest
    Nov 4, 2019

    Please have a look at the fragment taken from the history log from the LPAR which is shutdown from the HMC:

    PWRDWNSYS *CNTRLD RESTART(*NO) command in progress.
    PWRDWNSYS command issued with parameters specified.
    PWRDWNSYS command in progress.

    The details of the first line are:

    Message ID . . . . . . : CPI092F
    Date sent . . . . . . : 01-11-19 Time sent . . . . . . : 21:33:40

    Message . . . . : PWRDWNSYS *CNTRLD RESTART(*NO) command in progress.

    Cause . . . . . : Power Down System (PWRDWNSYS) is in progress with the
    *CNTRLD option and restart *NO because the partition was powered down from
    the Hardware Management Console (HMC).

    With the information above I do not understand why is stated that a PWRDWNSYS is not run on IBM i when you shutdown an LPAR through the HMC, because according to the history log the PWRDWNSYS command is used.

    I am just trying to understand what is happening, so I hope you can explain what I see.

    Greetings Rudi

  • Guest
    Nov 1, 2019

    IBM does not plan to deliver this request in the next release for IBM i.

    The HMC shut down operations are not an ease of use replacement for the PWRDWNSYS command run on the IBM i. The intended use of the HMC shut down operations is when you cannot access the the logical partition to perform the PWRDWNSYS command. The HMC operating system shut down command does not result in the PWRDWNSYS command being run on the IBM i. But with the HMC operating system shut down enhancement, the system does end subsystems and jobs in an attempt to avoid an abnormal IPL.

    The existing power down system exit programs are used for more than stopping applications in an orderly manner. They allow the power down to be stopped or delayed. The limited HMC interface does not allow the user to see warnings and take corrective action.

    Using the PWRDWNSYS command instead of the HMC has many advantages:
    - you can specify parameters like the delay time for a controlled power down
    - confirmation screen with system name
    - IBM i user is checked for authority to perform power down and actions taken by user exit programs
    - IBM i user performing the power down is audited and logged
    - you can see error messages or handle them from a program

    Knowledge Center documentation for the power down exit does have a usage note:
    The user-written exit programs are not called for the following:
    - If shut-down was initiated from outside the partition, such as from the control panel or HMC.

    We will recommend an update for the HMC interface to bring back the sentence from the previous version -- "For IBM i logical partitions, use this window only if you cannot shut down the IBM i logical partition from the command line of the operating system."

  • Guest
    Oct 30, 2019

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - Work Management and Messaging
    Operating system - IBM i
    Source - COMMON

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - Core OS
    Operating system - IBM i
    Source - COMMON