IJ26654: CSM_RESYNC_NEEDED SHOWN IN MMHEALTH

APAR status

• Closed as program error.

Error description

• The message should only show up if the
  communication between a node
  and the cluster manager.
  This triggers the events "csm_resync_needed"
  and "heartbeat_missing" to be shown erroneously.
  

Local fix

• None, other than using the same
  software version throughout the cluster
  

Problem summary

• The message should only show up if the
  communication between a node
  and the cluster manager.
  This triggers the events "csm_resync_needed"
  and "heartbeat_missing" to be shown erroneously.
  

Problem conclusion

• Benefits of the solution:
  Less network traffic between the nodes,
  more accurate status for the mmhealth node
  and the mmhealth cluster
  
  Work Around:
  None, other than using the same
  software version throughout the cluster
  
  Problem trigger:
  If a node is on a newer software release
  than the cluster manager some events sent
  out to build the cluster health can not
  be handled when they report components which
  are not know to the cluster manager node.
  This will trigger retries which will fail
  triggering the events "csm_resync_needed"
  and "heartbeat_missing".
  A "mmhealth node show --resync" will not help
  but would just put load on the network.
  
  Symptom:
  Unexpected Results/Behavior
  
  Platforms affected:
  ALL Operating System environments
  
  Functional Area affected:
  System Health
  
  Customer Impact:
  If a customer follows the suggested action
  network traffic is created which gets
  noticeable depending on the size of the cluster.
  For clusters < 100 Nodes:
  Suggested: has little or no impact on customer operation
  For clusters > 100 Nodes:
  High Importance: an issue which will cause a
  degradation of the system in some manner,
  or loss of a less central capability
  

Temporary fix

Comments

APAR Information

• 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

  SPEC SCALE STD

• Fixed component ID

  5737F33AP

Applicable component levels