IT11207: BACKUP SKIPS AND EXPIRES SOURCE BIND MOUNTED DIRECTORY WITH TSM 7.1 LINUX CLIENTS AND RHEL 7 OR SLES 12

IBM Spectrum Protect client 7.1.4.x interim fix downloads

APAR status

• Closed as program error.

Error description

• With the TSM 7.1 Linux clients on RedHat Enterprise Linux 7
  (RHEL 7) or SUSE Linux Enterprise Server 12 (SLES 12),
  if a part of the file system is bind mounted, the Backup-Archive
   client does not back up data from the original location, but
  instead expires it, and backs up the data found in the new bind
  mount point.
  
  Example:
  
  1. Create a directory  (ie. /testexport) to hold a bind mount to
  an existing directory  (ie. /testdata)
  
  2. Enter the following into /etc/fstab
  /testdata              /testexport       none    bind
  0 0
  
  3. Perform a remount of all unmounted file systems in /etc/fstab
  mount -a
  
  4. Verify that bind mount is active
  mount
  ...
  /testdata on /testexport type none (rw,bind)
  
  5. The data backed up by the Backup-Archive client can now be
  changed by remounting /testexport
  
  6. An incremental backup with bind mount mounted will show the
  following:
  
  tsm> inc
  Incremental backup of volume '/'
  Incremental backup of volume '/usr'
  Incremental backup of volume '/boot'
  Incremental backup of volume '/var'
  Incremental backup of volume '/testexport'
  Directory-->               4,096 /testexport/ [Sent]
  ...
  Expiring-->                   96 /testdata [Sent]
  ...
  Total number of objects backed up:           17
  Total number of objects expired:             15
  
  The objects in source directory /testdata have been expired,
  while objects in bind mount target have been backed up.
  
  
  Client service, smwin trace will show similar to following:
  
  09/04/2015 04:18:56.879 [024675] [1008539392] : unxfilio.cpp
  (2630): fioGetAttrib: getting of acl and extended attributes for
  mount point (/testexport) excluded
  09/04/2015 04:18:56.879 [024675] [1008539392] : unxfilio.cpp
  (2694): fioGetAttrib: type: 1132 size: 1024 for /testexport
  
  09/04/2015 04:18:56.879 [024675] [1008539392] : incrdrv.cpp
  (11900): cmpVal 10 for /lost+found vs. /testdata
  09/04/2015 04:18:56.879 [024675] [1008539392] : incrdrv.cpp
  (12462): HSMWIN - CompareIncr: Object exists on server but not
  on client
  
  This happens because the bind directory is interpreted as mount
  point.
  
  
  TSM Versions Affected:
  Tivoli Storage Manager V7.1 Linux clients on RHEL 7 or SLES 12
  
  Initial Impact:
  Medium
  
  Additional Keywords:
  TSM; bind mount; backup; expiring
  

Local fix

• Unmount bind mounted location to perform backup
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Tivoli Storage Manager backup-archive client version 7.1     *
  * running on Linux platform                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR DESCRIPTION.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available. This problem is currently *
  * projected to be fixed in level 7.1.6.                        *
  * Note that until this level is available, this information is *
  * subject to change at the discretion of IBM.                  *
  ****************************************************************
  

Problem conclusion

• Upon the fix, the bind mounted file systems are processed
  correctly.
  

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:

Modules/Macros

• dsmc     dsmagent
  

Fix information

• Fixed component name

  TSM CLIENT

• Fixed component ID

  5698ISMCL

Applicable component levels

• R71L PSY

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