OA64673: Misc problems related to java hbackup of empty directories files and symbolik links that reside in RO file systems

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• UNIX FILE BACKUP:
  When an empty directory that belongs to a Read Only filesystem
  is being backed up, the reftime cannot be updated. Upon next run
  of the java hbackup program, that same directory is selected for
  backup. This results in error message
  ARC1001I /empty/dir/ BACKDS FAILED, RC=0034, REAS=0094
  HSM correctly issues the message, because there is an up to date
  backup already. The java hbackup should properly handle the
  situation when reftime wasn't updated due to the file system
  being mounted as RO (read only) and not select such empty
  directories that already have a current backup for another
  backup.
  
  Symbolic links, files and empty directories that reside in (read
  only)RO file systems having mount points for (read write)
  RW file systems, could be chosen for backup on every incremental
  backup despite not being changed. This results in
  ARC1001I xxxxxx BACKDS FAILED, RC=0034, REAS=0094
  after the first backup had been taken.
  
  ADDITIONAL SYMPTOMS:
  If hbdelete is issued to delete the backups of a symbolic link,
  file or empty directory that are part of RO(read only) file
  system, the reftime is not updated back to 0(if it was
  different). This results in java hbackup not selecting them for
  a new backup, despite the fact that all backups were deleted.
  If the backup was done when the file system was mounted as RO,
  reftime would be 0 anyway and there is no problem, but if the
  backup was done when the filesystem was mounted RW, reftime
  would show the time of last backup, which could be a time after
  the last change. Java hbackup should handle this condition
  correctly.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All DFSMShsm V2R4 and later users of                         *
  * Java hbackup command for Incremental UNIX                    *
  * File Backup.                                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Misc problems with Java hbackup                              *
  * command for Incremental UNIX File                            *
  * Backup processing files on Read-Only                         *
  * file systems:                                                *
  * 1. Empty directories residing on                             *
  * Read-Only file systems with existing                         *
  * backup are selected by Java hbackup.                         *
  * 2. Files on Read-Only file system                            *
  * with existing backups are selected                           *
  * by Java hbackup.                                             *
  * 3. Files on Read-Only file system                            *
  * whose backup has been deleted using                          *
  * hbdelete are not selected by Java                            *
  * hbackup on subsequent backup request.                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  .
  

Problem conclusion

• DFSMShsm is modified to resolve the problem.
   KEYWORDS: UNIXFILEBACKUP/K
  

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:

  UJ93906 UJ93907 UJ93908

Modules/Macros

• ARCHJBAK ARCUCHKF
  

Fix information

• Fixed component name

  DFSMSHSM, ISMF

• Fixed component ID

  5695DF170

Applicable component levels

• R310 PSY UJ93906

     UP23/11/01 P F310

• R250 PSY UJ93908

     UP23/11/01 P F310

• R240 PSY UJ93907

     UP23/11/01 P F310

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.