The task fails for converting a source physical or virtual machine to a managed destination by using thick provisioned disks.
Article ID: 417712
Updated On:
Products
Issue/Introduction
The task fails for converting a source physical or virtual machine to a managed destination by using thick provisioned disks.
Try to perform a disk-based cloning of a physical or virtual machine to a managed destination by using thick provisioned disks with large empty spaces on them, the conversion task might fail.
Error message : Unable to clone disk source_disk on the virtual machine virtual_machine_name.
The following messages appear in the log file:
[03200 warning 'Default'] [,0] [NFC ERROR] NfcNetTcpRead: bRead: -1[03200 warning 'Default'] [,0] [NFC ERROR] NfcNet_Recv: requested 264, recevied only 0 bytes[03200 warning 'Default'] [,0] [NFC ERROR] NfcFile_Stream: Failed to get message from source[03200 warning 'Default'] [,0] [NFC ERROR] NFC_NETWORK_ERROR
Environment
vCenter Converter
Cause
The destination ESXi server must return an acknowledgement after each processed NFC write request. If the source sends a large block of zeroes that must be written it might take a long time for the ESXi to return the acknowledgement. Thus, the Converter assumes that the operation has timed out and closes the connection, no matter that the ESXi server is still writing to the target disk.
Resolution
Change the destination disk type to thin.
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