IJ38093: AFM COS FILESET HANG BECAUSE GW NODE IS MARKED AS INACTIVE

APAR status

• Closed as program error.

Error description

• ABSTRACT:
  AFM COS fileset hang because GW node is marked as
  inactive
  
  Error Description:
  When a node is specified as GW using "mmchnode --gateway"
  it's wrongly marked as inactive GW node, so
  access to all AFM filesets served by this GW node will
  hang. This could be recovered by restarting
  GPFS on this GW node
  
  Reported in:
  5.1.2 on all platforms
  
  Known Impact:
  All access to AFM filesets served by this GW node will
  hang.
  
  Verification steps:
  N/A
  
  Recovery action:
  restart GPFS on the newly assigned GW node.
  
  Local Fix:
  N/A
  

Local fix

Problem summary

• Deadlock after changing the AFM gateway node using
  mmchnode command as the node change is not propagated
  correctly to all the nodes in the cluster.
  

Problem conclusion

• This problem is fixed in 5.1.2 PTF 5
  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 deadlock.
  
  Work around:
  Restart GPFS on gateway nodes
  Problem trigger:
  mmchnode --gateway/--nogateway
  Symptom:  Deadlock
  Platforms affected: All Linux OS environments
  Functional Area affected: AFM
  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 STD

• Fixed component ID

  5737F33AP

Applicable component levels