IJ08779: POSSIBLE NETWORK OUTAGE WITH ADAPTERS USING SHIENTDD DRIVER APPLIES TO AIX 7200-01

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• **************************************************************
  * USERS AFFECTED:
  * Systems running the AIX 7200-01 Technology Level
  * with devices.ethernet.shi.rte at the 7.2.1.3 level.
    **************************************************************
  * ERROR DESCRIPTION:
  * Possible network outage can occur with adapters using the
  * shientdd driver.  The outage may be temporary or may require
  * rebooting the LPAR to recover.
  *
  * Find out if a system has any adapters using an affected
  * driver with lsdev, for example:
  *
  * # lsdev -F "name ddins" | grep shientdd
  * Note: on a VIOS, this must be run as root using
  * 'oem_setup_env'.
  *
  * We have seen this occur when changes occur on the physical
  * network, such as switches restarting or cables becoming
  * disconnected.  When the driver is handling these events, it
  * may incorrectly trigger a livedump of the adapter, causing
  * the adapter to be reset and network traffic through the
  * adapter to cease.  This may be temporary or may require
  * rebooting the LPAR to recover the adapter.
    **************************************************************
  * RECOMMENDATION:
  * Install APAR IJ08779.
  * Prior to fix availability, an interim fix is available from
  * either
  * ftp://aix.software.ibm.com/aix/ifixes/ij08779/
  * https://aix.software.ibm.com/aix/ifixes/ij08779/
  * The ifix can be installed using Live Update (LU).
  * If LU is not used, installation of the ifix requires a
  * reboot.
    **************************************************************
  

Local fix

• Disable the livedump feature:
  #‌‌ dumpctrl ldmpoff -P
  #‌‌ bosboot -a
  #‌‌ shutdown -Fr
  

Problem summary

• shientdd driver takes adapter livedumps and logs permanent
  error SHIENT_SW_ERR in the errpt.
  

Problem conclusion

• Modified the code which was wrongly triggering the livedump.
  

Temporary fix

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

Comments

APAR Information

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

  IJ08410

• 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 U878976

     UP19/01/23 I 1000 Ž

PTF to Fileset Mapping

• U878976 devices.ethernet.shi.rte 7.2.1.4