IBM Support

IJ04826: POTENTIAL DATA LOSS WITH VIOS SSP POOLFS

 

APAR status

  • Closed as program error.

Error description

  • **************************************************************
    * USERS AFFECTED:
    * Systems running the VIOS 2.2.4.x, 2.2.5.x, or 2.2.6.x levels.
      **************************************************************
    * ERROR DESCRIPTION:
    * Failures during thick LU creation can result in errors in the
    * pool metadata that can either allow blocks to be mapped by
    * multiple LUs, or allow the pool to try and free blocks
    * twice.
    * These errors can cause the pool to fail to mount or
    * potentially cause undetected data loss.
      **************************************************************
    * RECOMMENDATION:
    * Install APAR IJ04826.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/ij04826/
    * https://aix.software.ibm.com/aix/ifixes/ij04826/
    * Installation of the ifix requires a reboot.
      **************************************************************
    

Local fix

Problem summary

  • Customer cluster will not start due to double free issue.
    

Problem conclusion

  • On failure to allocate memory, put blocks back in the free list
    only if they are not used yet.
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    IJ04826

  • Reported component name

    AIX 6.1 EXT SUP

  • Reported component ID

    5765G6299

  • Reported release

    61E

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Submitted date

    2018-03-09

  • Closed date

    2018-05-30

  • Last modified date

    2018-06-04

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

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

Fix information

  • Fixed component name

    AIX 6.1 EXT SUP

  • Fixed component ID

    5765G6299

Applicable component levels

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSLLZP","label":"AIX Standard Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"61E","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11Q","label":"AIX 6.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"61E","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
04 June 2018