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IJ04268: POSSIBLE HANG DURING POWERHA VERIFY & SYNC AND OTHER PROCESSES APPLIES TO AIX 7200-02

A fix is available

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APAR status

  • Closed as program error.

Error description

  • **************************************************************
    * USERS AFFECTED:
    * Systems running the AIX  Technology Level
    * with bos.cluster.rte at or below the 7.2.2.15 level.
      **************************************************************
    * ERROR DESCRIPTION:
    * PowerHA Verify & Sync, clcmd, or other processes that
    * utilize clcomd may hang.
    * Large numbers of zombie processes for clcmd, clmgr, or
    * similar commands may be seen if this is occurring.
    *
    * Restarting clcomd with stopsrc/startsrc will clean up zombie
    * processes and allow clcomd to process new events again;
    * however the issue could re-occur again later, until the fix
    * is applied.
      **************************************************************
    * RECOMMENDATION:
    * Install APAR IJ04268.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/ij04268/
    * https://aix.software.ibm.com/aix/ifixes/ij04268/
    * The ifix can be installed using Live Update (LU).
    * If LU is not used, installation of the ifix requires a
    * reboot.
      **************************************************************
    

Local fix

  • Stopping and restarting clcomd (stopsrc -s clcomd;
    startsrc
    -s clcomd) will allow clcomd to process new events, and
    clean up existing zombie processes.  However, it will not
    prevent further hangs.
    

Problem summary

  • Operations involving clcomd, such as PowerHA Verify & Sync and
    clcmd commands may hang.
    

Problem conclusion

  • Remove unnecessary connection conflict logic that led to an
    infinite loop of clcomd refreshes.
    

Temporary fix

  •   *********
      * HIPER *
      *********
    

Comments

  • 7100-05 - use AIX APAR IJ04266
    7100-05 - use AIX APAR IJ04266
    7100-05 - use AIX APAR IJ04266
    7200-02 - use AIX APAR IJ04268
    

APAR Information

  • APAR number

    IJ04268

  • Reported component name

    AIX V7.2

  • Reported component ID

    5765CD200

  • Reported release

    720

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Submitted date

    2018-02-19

  • Closed date

    2018-03-05

  • Last modified date

    2018-09-21

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

    IJ04266

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

Fix information

  • Fixed component name

    AIX V7.2

  • Fixed component ID

    5765CD200

Applicable component levels

  • R720 PSY U877741

       UP18/08/10 I 1000 Ž

PTF to Fileset Mapping



Document information

More support for: AIX 7.2 Enterprise Edition

Software version: 720

Operating system(s): AIX

Reference #: IJ04268

Modified date: 21 September 2018