IBM Support

IV63485: wrong current ioo value for iodone_distr_disable tunable APPLIES TO AIX 7100-04

A fix is available

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • #ioo -r -o iodone_distr_disable=1
    after setting the value using above command and after the
    reboot, it suppose to set the value to 1, instead ioo
    display it's value as
    #ioo -o iodone_distr_disable
    iodone_distr_disable = 0
    
    similarly the tunable vmm_klock_mode:
    #vmo -r -o vmm_klock_mode=1
    after setting the value using above command and after the
    reboot, it suppose to set the value to 1, instead vmo
    display it's value as 0
    #vmo -o vmm_klock_mode
    vmm_klock_mode = 0
    

Local fix

  • The value of the tunable iodone_distr_disable is set to
    the correct value inside the kernel, so no functional
    issue.
    

Problem summary

  • If the customer changes the value of the iodone_distr_disable
    ioo tunable to 1 and reboots, a value of 0 is incorrectly
    reported.
    

Problem conclusion

  • Use the value of the kernel variable directly to set the
    current value during initialization.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV63485

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-08-12

  • Closed date

    2014-08-12

  • Last modified date

    2016-05-11

  • APAR is sysrouted FROM one or more of the following:

    IV62371

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U863867

       UP15/11/22 I 1000

PTF to Fileset Mapping

[{"Business Unit":{"code":"BU009","label":"Systems - Cognitive"},"Product":{"code":"SSMV87","label":"AIX Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SSMVAX","label":"AIX Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SG11R","label":"APARs - AIX 7.1 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":""}]

Document Information

Modified date:
11 May 2016