IT33315: HYPER-V RESTORE CRASH ON TARGET GUEST CREATION STEP

APAR status

• Closed as program error.

Error description

• When trying to restore a Hyper-V guest, the Client crashes
  while creating the VM.
  
  The crash dump call stack will look
  like the following:
  
  
  dsmagent!HyperVDisk::SetVirtualDiskMetadata+0xc8
  
  dsmagent!vmHyperVCreateVhdDisks+0xa14
  
  dsmagent!vmHyperVRestoreConfigAndCreateVM+0x22c
  
  dsmagent!vmHyperVVddkOptRestoreVM+0x636
  
  dsmagent!vmHyperVVddkRestoreVM+0x2c2
  
  dsmagent!vmHyperVRestoreVM+0x29d
   dsmagent!DoVMRestore+0x2c9
  
  dsmagent!DccRestoreConsumer::ProcessRequest+0x1195
  
  dsmagent!DccRestoreConsumer::HandleQueue+0x7c7
  
  dsmagent!DccRestoreConsumer::DoThread+0x1ed
  
  dsmagent!startThread+0x117
   ucrtbase!thread_start<unsigned int
  (__cdecl*)(void * __ptr64)>+0x3a
  
  kernel32!BaseThreadInitThunk+0x14
  
  ntdll!RtlUserThreadStart+0x21
  
  The issue happens when
  attempting to restore custom user metadata for the guest
  disk.
  Guest disk user metadata can be added by vendors during
  deployment or update of Hyper-V guests.
  See Microsoft
  information about that feature :
  https://social.technet.microsof
  t.com/Forums/windowsserver/en-US/4353ff3c-6c0c-45fc-b0f7-afc2765
  811d6/how-to-insert-custom-metadata-into-vhdx?forum=winserverhyp
  erv
  
  If there's no metadata defined for the disk, the restore
  can proceed. Otherwise the Client will crash.
  
  
  Spectrum
  Protect Versions Affected:
  Spectrum Protect for Virtual
  Environments - Data Protection for Hyper-V version 8.1.6 and
  higher on Windows
  
  | MDVPARTL - 8.1.6 TIV_5725TVEHV |
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Data Protection for Hyper-V versions 7.1.8, 8.1.6, 8.1.7,    *
  * 8.1.8, 8.1.9 and 8.1.10 on Windows x64 platform.             *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR DESCRIPTION                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * This issue is projected to be fixed in the Data Protection   *
  * for Hyper-V version 8.1.11 on Windows x64 platforms.         *
  * Note 1: This is subject to change at the discretion of IBM.  *
  ****************************************************************
  

Problem conclusion

• Disk user metadata is now correctly restored.
  

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

• dsmagent
  

Fix information

• Fixed component name

  TSM VE DP MS HY

• Fixed component ID

  5725TVEHV

Applicable component levels