IT46201: INCREMENTAL VMWARE GUEST BACKUP UNEXPECTEDLY SAVES THE FULL GUEST SIZE WHEN USING OPEN SNAP STORE MANAGER (OSSM)

8.1.24.000-IBM-SPSRV-WindowsX64-262
8.1.24.000-IBM-SPSRV-Linuxx86_64-262
8.1.24.000-IBM-SPSRV-Linuxs390x-262
8.1.24.000-IBM-SPSRV-Linuxppc64le-262
8.1.24.000-IBM-SPSRV-AIX-262

APAR status

• Closed as program error.

Error description

• The incremental backup of a VMware guest protected with
  IBM Storage Protect Plus using the IBM Storage Protect Open Snap
  Store Manager (OSSM) enabled VADP proxy can result in sending
  the entire guest data instead of the expected changed data since
  the previous backup.
  
  This happens only if the SPP backup policy contains multiple
  VM backups.
  
  Example, seen in the IBM Storage Protect Plus backup job log:
  
  Day 0: Base backup of VM IBM_TEST
  
  INFO,CTGGA2247,Will do full backup for VM IBM_TEST ...
  INFO,CTGGA0497,Finished VADP backup of VM (Base) IBM_TEST with
                 status complete VM total provisioned size
                 580.00 GB. VM total transferred 578.22 GB
  ----
  Day 1: Incremental backup of VM IBM_TEST
  
  INFO,CTGGA2110,Will do incremental backup for VM IBM_TEST
  INFO,CTGGA0496,Finished backup of VM (Incremental) IBM_TEST with
                 status complete Total bytes transferred 487.44 MB
  ----
  Day 2: Incremental backup of VM IBM_TEST is correctly requested
         but a full backup is unexpectedly executed
  
  INFO,CTGGA2110,Will do incremental backup for VM IBM_TEST
  INFO,CTGGA0496,Finished backup of VM (Incremental) IBM_TEST with
                 status complete Total bytes transferred 578.22 GB
  
  From the IBM Storage Protect server side there are two
  conditions to be met for this APAR to apply.
  
  1. The activity log shows the following synchronize commands
     after the backup completed:
     ANR2017I Administrator IBM-OSSM-ADMIN issued command:
              SYNCHRONIZE VOLUME nodeid=XX fsid=YY  (SESSION: 500)
     The synchronization command is an expected behavior.
  2. The output of the following select command from the Db2
     prompt being the IBM Storage Protect Server instance user is
     not empty :
     "select pasi.nodeid, pasi.fsid FROM tsmdb1.pa_snapshot_info
  pasi WHERE pasi.nodeid=<node_id> and NOT EXISTS(select 1 from
  tsmdb1.pa_snapshot_objects paso where pasi.nodeid=paso.nodeid
  and pasi.fsid=paso.fsid and paso.snapid=0) group by pasi.nodeid,
  pasi.fsid order by pasi.nodeid, pasi.fsid"
  
     If the output returns rows like ...
        NODEID   FSID
        -------  ------
        35       101
        35       102
        35       103
        3 record(s) selected.
     then this APAR applies.
  
  IBM Storage Protect versions affected:
  IBM Spectrum Protect server version 8.1.18 and later on
  platforms AIX® or Linux® x86_64.
  
  Additional Keywords:
  TSM, Spectrum Protect, TS015501212, OSSM, Spectrum Protect Plus,
  SPP, incremental, base
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All IBM Storage Protect server users of Open Snap Store      *
  * Manager (OSSM).                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See error description.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available.                           *
  * This problem is currently projected to be fixed in level     *
  * 8.1.24.                                                      *
  * Note that this is subject to change at the discretion of     *
  * IBM.                                                         *
  ****************************************************************
  

Problem conclusion

• This problem was fixed.
  Affected platforms for reported release: AIX, Linux.
  Platforms fixed: AIX, Linux.
  

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

  TSM SERVER

• Fixed component ID

  5698ISMSV

Applicable component levels