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>.