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Using LPM from the Command Line

August 30, 2016

In February I wrote about disabling live partition mobility on selected partitions, and recently I received a related question from someone looking for an alternative to using the HMC GUI. Specifically, how do you turn LPM on and off from the command line on a per partition basis?

This post lays out an audit trail:

Any change to this attribute is logged as a system event, and can be checked for auditing purposes. A system event will also be logged when the Remote Restart or Simplified Remote Restart capability is set. More specifically, a system event is logged when:

    * any of these three attributes are set during the partition creation
    * any of these three attributes are modified
    * restoring profile data.

Users can check system events using the lssvcevents CLI and /or the View Management Console Events GUI. Using HMC's rsyslog support, these system events can also be sent to a remote server on the same network as the HMC.

These system events can be logged:

  2420 User name {0}: Disabled partition migration for partition {1} with ID {2} on managed system {3} with MTMS{4}.
    2421 User name {0}: Enabled partition migration for partition {1} with ID {2} on managed system {3} with MTMS{4}.
    2422 User name {0}: Disabled Simplified Remote Restart for partition {1} with ID {2} on managed system {3} with MTMS{4}.
    2423 User name {0}: Enabled Simplified Remote Restart for partition {1} with ID {2} on managed system {3} with MTMS{4}.
    2424 User name {0}: Disabled Remote Restart for partition {1} with ID {2} on managed system {3} with MTMS{4}.
    2425 User name {0}: Enabled Remote Restart for partition {1} with ID {2} on managed system {3} with MTMS{4}.”

In a real life example, a reader sent me the following information. (Note: The command is in the log output).

Just FYI, there is a way to make this change from the terminal on the HMC because I can see the command in the audit logs:

02 03 2016 07:48:43 10.9.0.1 <USER:INFO> Feb  3 07:48:43 hmc01 HMC: HSCE2123 User name hscroot: chsyscfg -m system1 -r lpar -i lpar_id=20,migration_disabled=1 command was executed successfully.

02 03 2016 08:21:01 10.9.0.1 <USER:INFO> Feb  3 08:21:01 hmc01 HMC: HSCE2123 User name hscroot: chsyscfg -m system1 -r lpar -i lpar_id=20,migration_disabled=0 command was executed successfully.


In this case we were able to run:

chsyscfg -m system1 -r lpar -i lpar_id=20,migration_disabled=1
chsyscfg -m system1 -r lpar -i lpar_id=20,migration_disabled=0

to do our testing.

I was also able to deduce from those commands, that you could run this command to show the disable_migration state:

lssyscfg -m system1 -r lpar --filter lpar_ids=20 -F migration_disabled

This information should come in handy should you find yourself wanting to make a change from the command line.

Posted August 30, 2016 | Permalink

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