IJ31021: AUTO REPAIR CORRUPT DELETED INODES ON READ

APAR status

• Closed as program error.

Error description

• Deleted inodes with inconsistencies were ignored in
  Spectrum Scale versions prior to 5.1 but are flagged as a
  corruption in versions 5.1 and above. If such corruptions
  exist, then they can cause commands like 'mmchdisk start'
  to fail.
  

Local fix

• Upgrade all nodes to v5.1 or use only v5.1 nodes to do
  mmfsck and use only v.50.5 and lower nodes to bring disks
  up.
  

Problem summary

• Deleted inodes with inconsistencies were ignored
  in gpfs versions prior to 5.1 but are flagged as a
  corruption in versions 5.1 and above. If such
  corruptions exist, then they can cause commands
  like 'mmchdisk start' to fail.
  

Problem conclusion

• Benefits of solution:
  Deleted inodes with inconsistencies are auto-repaired
  in memory and no longer fail commands like
  'mmchdisk start'. However, an fsstruct error would be
  logged in system logs. Also, running offline fsck to fix
  such corruptions is optional and not strictly necessary.
  Work Around:
  Run offline fsck repair on 5.1 nodes only.
  Problem trigger:
  Corruption in deleted inodes.
  Symptom:
  Operation failure due to FS corruption
  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 DME

• Fixed component ID

  5737F34AP

Applicable component levels