IJ33535: PERIODIC SEGFAULTS FROM TSENCLSTAT

APAR status

• Closed as program error.

Error description

• tsenclstat causes a coredump with segmentation fault
  whenever it runs on a system with only one SAS
  adapter hooked up to a storage enclosure.
  This most commonly occurs in a "daisy-chain" configuration.
  

Local fix

• Ensure there are two SAS adapters hooked
  up to each storage enclosure.
  

Problem summary

• tsenclstat causes a coredump with segmentation fault
  whenever it runs on a system with only one SAS
  adapter hooked up to a storage enclosure.
  This most commonly occurs in a "daisy-chain" configuration.
  

Problem conclusion

• This problem is fixed in 5.1.1  PTF 2.
  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:
  No more  Segfaults from tsenclstat
  
  Work Around:
  Ensure there are two SAS adapters hooked
  up to each storage enclosure.
  
  Problem trigger:
  This issue affects customers with daisy-chain
  storage enclosure configurations in which only
  one SAS adapter is connected from the server
  to a storage enclosure. It occurs whenever
  tsenclstat runs, which will occur automatically
  every few minutes as part of the daemon's
  regular status check.
  
  Symptom:
  Error output/message
  
  Platforms affected:
  ALL Operating System environments
  
  Functional Area affected:
  ESS/GNR
  
  Customer Impact:
  Critical
  

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

• R511 PSY

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