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IV83143: I/O HANG OR CRASH IN EFC_FREE_LOGIN _TBLE WITH SOME FC ADAPTERS APPLIES TO AIX 6100-09

A fix is available

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APAR status

  • Closed as program error.

Error description

  • **************************************************************
    * USERS AFFECTED:
      * Systems running the AIX 6100-09 Technology Level
      * with devices.pci.df1000f7.com below the 6.1.9.200 level.
      **************************************************************
      * PROBLEM DESCRIPTION:
      * I/O can hang during SAN events which cause a change in WWPN
      * for well-known switch N_Port IDs (for example the switch
      * nameserver).  Events which may cause this to occur include
      * regular SAN maintenance such as moving cables, rebooting
      * switches, bouncing switch ports, etc.. It could also happen
      * if links are dropped briefly, forcing the host-side
      adapters
      * to re-login to the fabric.
      *
      * In some recent Service Packs, this may manifest as a system
      * crash, asserting in efc_free_login_tble().
      *
      * The error log will contain a number of FCA_ERR12 errors,
      * with the error number 0x9E in the first line of the SENSE
      * DATA, eg:
      * 0000 0011 0000 009E ... ...
      *
      * This only affects VIO Servers and LPARs with physical Fibre
      * Channel adapters, and affects all IBM FC adapters except
      * for those with Feature Codes 25xx, 2Exx, and ENxx
      *
      * Check for the Feature Code (Card ID Number)
      * On VIOS with:
      *  $ lsdev -dev fcsX -vpd | grep "Customer Card ID Number"
      * And on AIX with:
      *  # lscfg -l fcsX -v   | grep "Customer Card ID Number"
      **************************************************************
      * RECOMMENDATION:
      * Install APAR IV83143.
      * Prior to fix availability, an interim fix is available from
      * either
      * ftp://aix.software.ibm.com/aix/ifixes/iv83143/
      * https://aix.software.ibm.com/aix/ifixes/iv83143/
      * Installation of the ifix requires a reboot.
      **************************************************************
    

Local fix

  • The only way to recover from the hang is to reboot the
    host.
    
    If the problem occurs in a VIO configuration, the VIO
    server will need to be rebooted. Any NPIV client LPARs
    mapped to the impacted physical adapter/path will also
    need to be rebooted.
    

Problem summary

  •   **************************************************************
      * USERS AFFECTED:
      * Systems running the AIX 6100-09 Technology Level
      * with devices.pci.df1000f7.com below the 6.1.9.200 level.
      **************************************************************
      * PROBLEM DESCRIPTION:
      * I/O can hang during SAN events which cause a change in WWPN
      * for well-known switch N_Port IDs (for example the switch
      * nameserver).  Events which may cause this to occur include
      * regular SAN maintenance such as moving cables, rebooting
      * switches, bouncing switch ports, etc.. It could also happen
      * if links are dropped briefly, forcing the host-side
      adapters
      * to re-login to the fabric.
      *
      * In some recent Service Packs, this may manifest as a system
      * crash, asserting in efc_free_login_tble().
      *
      * The error log will contain a number of FCA_ERR12 errors,
      * with the error number 0x9E in the first line of the SENSE
      * DATA, eg:
      * 0000 0011 0000 009E ... ...
      *
      * This only affects VIO Servers and LPARs with physical Fibre
      * Channel adapters, and affects all IBM FC adapters except
      * for those with Feature Codes 25xx, 2Exx, and ENxx
      *
      * Check for the Feature Code (Card ID Number)
      * On VIOS with:
      *  $ lsdev -dev fcsX -vpd | grep "Customer Card ID Number"
      * And on AIX with:
      *  # lscfg -l fcsX -v   | grep "Customer Card ID Number"
      **************************************************************
      * RECOMMENDATION:
      * Install APAR IV83143.
      * Prior to fix availability, an interim fix is available from
      * either
      * ftp://aix.software.ibm.com/aix/ifixes/iv83143/
      * https://aix.software.ibm.com/aix/ifixes/iv83143/
      * Installation of the ifix requires a reboot.
      **************************************************************
    

Problem conclusion

  • Code added to avoid the loop by managing our data structure
    properly.
    

Temporary fix

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

Comments

  • 6100-09 - use AIX APAR IV83143
    7100-04 - use AIX APAR IV85098
    7200-01 - use AIX APAR IV85057
    

APAR Information

  • APAR number

    IV83143

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Submitted date

    2016-03-30

  • Closed date

    2016-04-29

  • Last modified date

    2017-01-20

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U862036

       UP16/10/25 I 1000 Ž

PTF to Fileset Mapping

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Document Information

Modified date:
17 December 2021