IT15657: HYPER-V GUEST BACKUP WILL FAIL WHEN THE GUEST HAS A ISCSI DISK ATTACHED

Download Information: Version 8.1.0 IBM Spectrum Protectâ„¢ for Virtual Environments
IBM Spectrum Protectâ„¢ Client 8.1.0 Downloads and READMEs

APAR status

• Closed as fixed if next.

Error description

• The documentation needs to be updated to indicate the
  limitations when protecting Hyper-V guests.
  
  Tivoli Storage Manager Versions Affected:
  IBM Spectrum Protect for Virtual Environments - Data Protection
  for Hyper-V version 7.1.x on Windows
  
  
  Customer/L2 Diagnostics (If Applicable)
  
  
  You may see the following errors In the dsmerror.log of the
  datamover running the backup:
  
     ANS5250E An unexpected error was encountered.
     TSM function name : StartSnapshotSet()
     TSM function      : 'StartSnapshotSet() failed with
     error VSS_E_SNAPSHOT_SET_IN_PROGRESS. 0X80042316'
     TSM return code   : -2147212522
  
  You may see the following output when running "list writers
  all"
  
  WRITER "Microsoft Hyper-V VSS Writer"
  - Status: 11 (VSS_WS_FAILED_AT_POST_SNAPSHOT)
  - Writer failure code: 0x800423f3 (VSS_E_WRITERERROR_RETRYABLE)
  - Writer ID: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
  - Writer instance ID: {8460bc52-3eb7-4991-a06b-7108d577fd0e}
  
  You may see the following when running client service trace of
  the failing backup:
  
  HyperVUtility thread Agent   5================>
  04/13/2016 09:12:22.770 [005064] [5584] :
  ..\..\common\vm\HyperV\vsssnap.cpp(1387): CreateSnaps() HyperV
  writer status is <800423f3>
  04/13/2016 09:12:22.770 [005064] [5584] :
  ..\..\common\vm\HyperV\vsssnap.cpp(1479): CreateSnaps() Exiting
  with rc=4343.
  04/13/2016 09:12:22.770 [005064] [5584] :
  ..\..\common\vm\utilitythread.cpp( 426): vddkUtilityThread:
  return from CreateSnap for vm 'TSBKUP01' with rc 4343
  04/13/2016 09:12:22.770 [005064] [5584] :
  ..\..\common\ut\dsfifo.cpp( 484):
  fifoQgetNextWaitNoTS(0000006B6CD1A990): cbCanProceed=False.
  04/13/2016 09:12:22.770 [005064] [5584] :
  ..\..\common\ut\dsfifo.cpp( 489):
  fifoQgetNextWaitNoTS(0000006B6CD1A990): Waiting for next object.
  
  
  Initial Impact: Medium
  
  Additional Keywords: TSM spectrum protect TDP4VE HYPERV backup
  

Local fix

• Make sure there are no iSCSI disks attached to the Hyper-V guest
  before starting  backup. To have a more complete information
  about about Hyper-V backup limitations, review the Microsoft
  document :
  "Considerations for backing up and restoring virtual machines"
  https://technet.microsoft.com/en-us/library/dn798286.aspx
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Tivoli Storage Manager for Virtual Environments Data     *
  * Protection for Microsoft Hyper-V Installation and User's     *
  * Guide V7.1.1 and V7.1.3                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR description.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

Temporary fix

Comments

• If there is a next release of Tivoli Storage Manager after 7.1,
  this APAR will be fixed in that next release
  

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 VE DP MS HY

• Fixed component ID

  5725TVEHV

Applicable component levels

• R71W PSN

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