IJ29989: TSFINDINODE FAILS TO FIND INODE INTERMITTENTLY

APAR status

• Closed as program error.

Error description

• tsfindinode can declare (notfound) although the file
  is actually there and has a valid inode number.
  running tsfindinode -i <inum< -t 1 reliably works,
  though.
  However this is single threaded and can take very long.
  

Local fix

• the functionality of tsfindinode can be replicated via
  the policy engine.
  
  1) create a policy rule file (i.e:
  /home/user/findinode.rule) which contains :
  RULE LIST 'paths' DIRECTORIES_PLUS WHERE
  INODE=<insertINUMhere>
  
  2) run mmapplypolicy:
  # mmapplypolicy test -f /tmp -P /home/user/findinode.rule
  -I defer
  
  3) once completed, check the /tmp/list.paths file
  # cat /tmp/list.paths
  

Problem summary

• The tsfindinode utility incorrectly reports file
  path as not found for valid inodes
  

Problem conclusion

• Benefits of the solution:
  With this solution tsfindinode will report file paths
  correctly for all valid inodes present in the file system
  
  Work around:
  Use mmapplypolicy to get file paths
  using the below procedure:\
  # create a policy rule file anywhere
  RULE LIST 'paths' DIRECTORIES_PLUS
  WHERE INODE=<inum1> OR INODE=<inum2> OR ...
  # then run policy scan using above rule
  mmapplypolicy <fs> -f /tmp -P policy.rule -I defer -m 64
  # the result will be found in /tmp/list.files
  
  Problem trigger:
  There is no problem trigger as this is a tsfindinode issue.
  
  Symptom:
  Incorrect output
  
  Platforms affected:
  ALL Operating System environments
  
  Functional Area affected:
  tsfindinode
  
  Customer Impact:
  Suggested
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IJ29763

• 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