IZ34213: CORRUPT CBT B+TREE INDEX FILE CAN CAUSE FILESYSTEM TO FILL

APAR status

• Closed as program error.

Error description

• If the index file is corrupt in that a node's right node pointer
  points to itself, the fmt_dump_tree function in kglcbdmp.c loops
  during formatting, producing a QA1xxxxx.dmp file that fills the
  filesystem.  The function needs to check for this condition and
  break out of the formatting loop with an error message.
  
  Environment discovered - Linux for zSeries
  
  Steps to recreate - corrupt IDX/DB files stored on GSA
  /projects/i/itm_61/L3_TEAM/Apar_Data/
  
  Start TEMS with defective files in the $CANDLEHOME/tables/tems
  directory
  
  Approver - HT
  

Local fix

• Replace the corrupt IDX/DB files
  

Problem summary

• During TEMS startup with with a corrupted .idx file, all
  space in the file system is consumed.
  

Problem conclusion

• During TEMS startup, table files are verified.  If a table
  index file is found to be corrupt, it is dumped to a text file
  with a .dmp extention which is created in the TABLES directory.
  Certain kinds of curruption can cause this
  dump file to grow large enough to consume all available space in
  the file system.
  
  The fix for this APAR will be included in the following
  maintenance vehicle:
      | interim fix | 6.1.0.7-TIV-ITM-IF0004
  
  Note: Search the IBM Technical support web site for maintenance
  package availability
  

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

  TEMS

• Fixed component ID

  5724C04MS

Applicable component levels

• R610 PSY

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