IT39629: BACKUPS OF VIRTUAL MACHINES CAN FAIL WITH ANS4174E RC=2070 AFTER UPGRADING TO 8.1.13 WITH VSPHERE 6.7 AND ABOVE.

APAR status

• Closed as program error.

Error description

• Problem Description:
  
  Protecting VMware guests running on vSphere 6.7 or higher using
  IBM Spectrum Protect for Virtual Environments - Data protection
  for VMware version 8.1.13 or higher and using deduplication can
  fail with:
  
  ANS0246E Issue dsmEndTxn and then begin a new transaction
  session.
  ANS5250E An unexpected error was encountered.
   IBM Spectrum Protect function name : vmSendViaFile()
   IBM Spectrum Protect function      : Failed sending file
  xx.CTL
   IBM Spectrum Protect return code   : 2070
   IBM Spectrum Protect file          :
  ..\..\common\vm\vmmigration.cpp (1441)
  ANS0361I DIAG: VmBackupControlFiles(): Error 2070 sending xx.CTL
  
  ANS4174E Full VM backup of VMware Virtual Machine failed with
  RC=2070 mode=Incremental Forever - Incremental, target node
  name=? DC_node_name?, data mover node name=?DM_node_name?
  ANS1228E Sending of object failed.
  ANS0246E Issue dsmEndTxn and then begin a new transaction
  session.
  
  In a client transaction, multiple objects to send to the server
  can be included but the constraint is that a transaction can
  only have a single destination.
  The first object will decide if the transaction destination must
  be a deduplicated storage pool or not.
  When the first out of the multiple objects in this transaction
  has a size of 0 byte or so small (less than 2048 bytes) it is
  not eligible for deduplication and the entire new transaction is
  marked with dedup=off.
  The error appears when in the same transaction the next object
  is eligible for dedup because it is big enough for that.
  In that case, the API client will abort the current transaction
  with the error 'RC 2070' because the transaction initial
  destination was not set to dedup=on.
  
  | MDVPARTL 5725TVEVM 8.1.13 IT36934 |
  
  IBM Spectrum Protect Versions Affected:
  IBM Spectrum Protect for Virtual Environments - Data Protection
  for VMware version 8.1.13 and later on Windows and Linux
  
  Additional Keywords: TSM, Tivoli, Storage, Manager, backup,
  TS007869973
  

Local fix

• Increasing the txnbytelimit to 2GB will mitigate efficiently the
  problem by minimizing the possibility to have ineligible object
  for deduplication (smaller than 2048 Bytes) at the beginning of
  a transaction. To increase the txnbytelimit follow the below
  steps:
  
  
  1.Update the datamover option file (.opt in windows / dsm.sys
  in Unix) with the following option:
  'txnbytelimit   2g'
  2.Restart datamover services.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Spectrum Protect for Virtual Environments Data           *
  * Protection for VMware levels 8.1.11, 8.1.12, and 8.1.13      *
  * running on all Microsoft Windows x64 and Linux x86           *
  * platforms.                                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR DESCRIPTION                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * This issue is projected to be fixed in the Data Protection   *
  * for VMware Data Mover level 8.1.14 on Windows x64 and Linux  *
  * x86 platforms.                                               *
  * Note that this is subject to change at the discretion of     *
  * IBM.                                                         *
  ****************************************************************
  

Problem conclusion

• The code has been fixed so currently the client sends a dummy
  DAT file in the separate transaction.
  

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 FOR VE DP V

• Fixed component ID

  5725TVEVM

Applicable component levels