IJ50035: SIGNAL 11 AT NODECONN::HANDLERECONNCLEANUP

APAR status

• Closed as program error.

Error description

• during "(Connection reset by peer). Attempting
  reconnect."
  it can happen that the mmfsd dies due to a segmentation
  violation
  causing a restart of mmfsd, and thus losing filesystem
  access
  for the restart timeframe
  

Local fix

Problem summary

• When RDMA verbsSend is enabled and number of RDMA connections is
  largerthan 16, if reconnect happens, could cause segment fault
  issue.
  

Problem conclusion

• This problem is fixed in 5.1.9.3
  To see all Spectrum Scale APARs and their respective
  Fix solutions refer to page:
  https://public.dhe.ibm.com/storage/spectrumscale/spectrum_scale_
  apars.html
  
  Benefits of the solution:
  Fix the segment fault issue when reconnect happens
  
  Work around:
  No
  
  Problem trigger:
  RDMA verbsSend and TCP reconnect
  
  Symptom:
  Abend/Crash
  
  Platforms affected:
  ALL Operating System environments
  
  Functional Area affected:
   All Scale Users
  
  Customer Impact:
  High Importance
  

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 ADV

• Fixed component ID

  5737F35AP

Applicable component levels