IV80778: POWERHA FAILOVERS TIMES MAY BE LONG DUE TO DNS QUERY TIMEOUTS APPLIES TO AIX 7100-04

APAR status

• Closed as program error.

Error description

• ***************************************************************
  * USERS AFFECTED:
  * Systems running the AIX 7100-04 Technology Level
  * with bos.cluster.rte at the 7.1.4.0 or 7.1.4.1 level.
  ***************************************************************
  * PROBLEM DESCRIPTION:
  * PowerHA events, including failovers, may take significantly
  * longer time to complete if DNS is configured but the
  * nameserver is not accessible.
  *
  * This causes failovers due to loss of network connectivity
  to
  * take much longer than they should, up to 30 minutes or
  * possibly more.
  *
  * This only affects AIX 7.1 TL4 and AIX 7.2.
  ***************************************************************
  * RECOMMENDATION:
  * Install APAR IV80778.
  * Prior to fix availability, an interim fix is available from
  * either
  * ftp://aix.software.ibm.com/aix/ifixes/iv80778/
  * https://aix.software.ibm.com/aix/ifixes/iv80778/
  * Installation of the ifix does not require a reboot.
  ***************************************************************
  

Local fix

Problem summary

• ***************************************************************
  * USERS AFFECTED:
  * Systems running the AIX 7100-04 Technology Level
  * with bos.cluster.rte at the 7.1.4.0 or 7.1.4.1 level.
  ***************************************************************
  * PROBLEM DESCRIPTION:
  * PowerHA events, including failovers, may take significantly
  * longer time to complete if DNS is configured but the
  * nameserver is not accessible.
  *
  * This causes failovers due to loss of network connectivity
  to
  * take much longer than they should, up to 30 minutes or
  * possibly more.
  *
  * This only affects AIX 7.1 TL4 and AIX 7.2.
  ***************************************************************
  * RECOMMENDATION:
  * Install APAR IV80778.
  * Prior to fix availability, an interim fix is available from
  * either
  * ftp://aix.software.ibm.com/aix/ifixes/iv80778/
  * https://aix.software.ibm.com/aix/ifixes/iv80778/
  * Installation of the ifix does not require a reboot.
  ***************************************************************
  

Problem conclusion

• Do not perform DNS queries in cases where network connectivity
  is not explicitly required.
  

Temporary fix

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

Comments

APAR Information

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

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

  IV80882 IV81002

Fix information

• Fixed component name

  AIX V7.1

• Fixed component ID

  5765H4000

Applicable component levels

• R710 PSY U862904

     UP16/10/25 I 1000 Ž