IJ49762: MMLSQUOTA -D CAN CAUSE GPFS DAEMON TO CRASH

APAR status

• Closed as program error.

Error description

• Issue: mmlsquota -d can cause gpfs daemon to crash
  
  Assertion happens because the entryType of root quota
  entry of the user quota has entry type e (explicit)
  instead of default state.
  There are some inconsistencies in the way that entryType
  of root quota entry is changed,
  considering whether perfileset-quota and default quota
  (per file system, perfileset) are on or off:
  When default quota is on, the entry type immediately
  becomes "default on" - which would not cause the
  assertion.
  When default quota is off, the entryType remains e,
  hitting the assertion when displaying default user quota.
  

Local fix

• The quota entry got entryType "e" after mmsetquota.
  The work around could be to turn off and turn on default
  quota (mmdefquotaon -u fsName).
  

Problem summary

• mmlsquota -d can cause gpfs daemon to crash
  

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:
  Avoid crashing the daemon when running -d option with mmlsquota
  command.
  
  Work Around:
  Enable default quota (all types: user, group, fileset) on the
  filesystem and then run the mmlsquota -d.
  
  Problem trigger:
  Assertion happens because the entryType of root
  quotaentry has entry type e (explicit) instead of default
  state.The root quota entry type could have been changed if
  weedit the quota entry (entry type is changed to
  EXPLICIT_ENTRY),via mmsetquota, mmedquota, or mmdefedquota
  commands.When displaying default quota limits (mmlsquota -d), if
  defaultquota is on, the entry type will revert to "default on" -
  whichwould not cause the assertion. If default quota is off,
  theentryType remains e, hitting the assertion when
  displayingdefault quota limits.Fix: correct the mmlsquota -d
  processing so that the default quotastatus stored in root quota
  entries are updated to the expectedvalues, based on quota
  options in sgDesc, avoiding the assertion.
  
  Symptom:
  GPFS daemon can crash when displaying default quota (mmlsquota
  -d) ifdefault quota if not on.
  
  Platforms affected:
  ALL Operating System environments
  
  Functional Area affected:
  Quotas
  
  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