IT13933: INCREMENTAL BACKUP OF BTRFS '/' FILESYSTEM DOESN'T FIND ALL AVAILABLE OBJECTS.

IBM Spectrum Protectâ„¢ Client 7.1.6 Downloads and READMEs

APAR status

• Closed as program error.

Error description

• When backing up root ('/') filesystem and this filesystem is
  BTRFS, objects in subvolumes from '/' are skipped when these
  subvolumes are not mounted. When these subvolumes are not
  mounted, they should backup as part of the BTRFS.
  Backup completion state will be successful, but objects will not
  be backed up.
  
  If the BTRFS subvolume is mounted, it will be backed up as a
  separate file system and stored under the appropriate file space
  name on the Tivoli Storage Manager Server.
  
  See also APAR IT08842, that has fixed this behavior on non-root
  filesystems.
  
  | MDVPARTL 5698ISMCL 7.1.2.3 |
  
  Tivoli Storage Manager Versions Affected:
  All supported versions of Tivoli Storage Manager Client Linux
  
  Customer/L2 Diagnostics
  
  Initial Impact: Medium
  
  Additional Keywords: Spectrum, Protect, TSM
  

Local fix

• Defining the unmounted subvolumes as VIRTUALMOUNTPOINT in
  dsm.sys will backup the subvolumes.
  Note: upon the fix, the subsequent backup of the entire root fs
  will re-backup all the unmounted subvolumes under the root file
  space on the Tivoli Storage Manager Server.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Tivoli Storage Manager backup-archive client version 7.1     *
  * running on Linux platforms while backing up the root (Btrfs) *
  * file system.                                                 *
  ****************************************************************
  * 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

• While running either backup or archive of the root (Btrfs) file
  system, unmounted Btrfs subvolumes were not traversed. As a
  result, the subvolumes directories (and all the objects
  underneath them) were skipped from the operation. After the fix,
  all eligible objects from the root (Btrfs) file system are
  processed as expected.
  

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
  

Fix information

• Fixed component name

  TSM CLIENT

• Fixed component ID

  5698ISMCL

Applicable component levels

• R71L PSY

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