P2V conversion of a Windows server fails at 1%

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• P2V conversion of a Windows server fails at 1%
• You see the error:
  
  An error occurred during the conversion
  
  
• In the converter-worker.log file, you see similar entries related to bad blocks:
  
  yyyy-mm-ddYhh:mm:ss [07376 error 'task-4'] BlockLevelVolumeCloneMgr::ReadAndSkipBadBlocks(): Error (type: 2, code: 2) reading 110592 bytes starting at 0x000000018b0dc000 from the source volume E:
  yyyy-mm-ddYhh:mm:ss [07376 error 'task-4'] BlockLevelVolumeCloneMgr::ReadAndSkipBadBlocks(): Unrecoverable error (type: 2, code: 2) reading 110592 bytes starting from 0x000000018b0dc000 from the source volume E:
  yyyy-mm-ddYhh:mm:ss [07376 error 'task-4'] BlockLevelVolumeCloneMgr::CloneVolume: failed with exception converter.fault.FileIOFault
  
  
• In the converter agent logs, you see entries similar to:
  
  [#2] [yyyy-mm-ddYhh:mm:ss info 'task-1'] BlockLevelVolumeCloneMgr::InitCloningPassType: not an incremental clone, and we are not tracking changes for the next iteration, so this must be a standard full clone.
  [#2] [yyyy-mm-ddYhh:mm:ss info 'task-1'] BlockLevelVolumeCloneMgr::CloneVolume: cloning volume with ID \WindowsBitmapDriverVolumeId=[44-4D-49-4F-3A-49-44-3A-CC-58-E6-A1-BD-F2-D7-11-9E-F6-80-6E-6F-6E-69-63]
  [#2] [yyyy-mm-ddYhh:mm:ss info 'task-1'] BlockLevelVolumeCloneMgr::CloneVolume: Source volume is mounted under the name\\.\GLOBALROOT\Device\HarddiskVolumeShadowCopy1\
  [#2] [yyyy-mm-ddYhh:mm:sserror 'task-1'] [LiveDeviceReaderWriter] CreateFile(\\.\GLOBALROOT\Device\HarddiskVolumeShadowCopy1) failed with error code 2
  [#2] [yyyy-mm-ddYhh:mm:ss error 'task-1'] SingleVolumeCloneTask::DoRun: Volume cloning failed with error converter.fault.FileIOFault

• In the Event Viewer of the source physical machine, you see events similar to:
  
  Event ID: 14
  Source: VolSnap
  Type: Error
  Description The shadow copies of volume <volume> were aborted because of an IO failure on volume <volume>.
  
  Event ID: 35
  Source: dmio
  Type: Warning
  Description dmio: Disk Harddisk 1 block 32391 (mountpoint <drive letter>:); Uncorrectable read error

Environment

VMware vCenter Converter Standalone 4.0.x
VMware vCenter Converter Standalone 5.0.x
VMware vCenter Converter 4.0.x
VMware vCenter Converter Standalone 4.3.x
VMware vCenter Converter 4.1.x
VMware vCenter Converter 4.2.x

Cause

This issue may occur if the hard disk contains hard bad blocks that cannot be fixed using the chkdsk command or if the disks need a defragmentation.

Resolution

To resolve this issue:

• Analyze and defragment the physical hard disk using Disk Defragmenter.
• If the hard disk has hard bad blocks, contact the hardware vendor of the physical server for further assistance.

Additional Information