IJ45266: CREATEMIXHANDLERTHREAD - LOGASSERTFAILED: !FILEID.ISSNAPLINKDIR(

APAR status

• Closed as program error.

Error description

• The snaplink directory is a virtual directory that is
  constructed in-memory
  only on the fly to contain entries for snapshots, thus a
  seek data or hole
  operation is inappropriate and can cause the follow mmfsd
  assert
  
  [X] logAssertFailed: !fileId.isSnaplinkDir()
  [X] return code 0, reason code 0, log record tag 0
  [X] *** Assert exp(!fileId.isSnaplinkDir()) in line 1023
  of file
  /project/sprelgpfs514/build/rgpfs5142220e/src/avs/fs/mmfs
  /ts/fs/fsop.C
  
  it will be fixed to return ENXIO ( no such device or
  address )
  error if seek request is against snaplink directory
  
  Reported in:
  Spectrum Scale 5.1.4
  

Local fix

Problem summary

• Daemon assert " logAssertFailed: !fileId.isSnaplinkDir()" going
  off when calling lseek against the .snapshots directory
  

Problem conclusion

• This problem is fixed in 5.1.2.10
  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 daemon crash by gracefully handling the lseek request on
  the .snapshots directory.
  
  Work around:
  Avoid lseek call to the .snapshots directory.
  
  Problem trigger:
  Perform lseek request against the .snapshots directory.
  
  Symptom:
  Daemon crash
  
  Platforms affected:
  All Operating Systems
  
  Functional Area affected:
  Snapshot
  
  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