Home > VMware, vSphere > Unable to clone disk *.vmdk when converting a VM with Paravirtual disk with VMware Converter

Unable to clone disk *.vmdk when converting a VM with Paravirtual disk with VMware Converter

Last week i was trying to migrate/convert (V2V) a VM with Paravirtual SCSI Controllers.

As you all know, Hard disks attached to Paravirtual SCSI Controllers is ‘the way to go’ in vSphere:

– Lower CPU utilization

– Better performance

– Virtualization aware

– …

However, when you try to convert a VM with Paravirtual SCSI Controller, VMware Converter 4.3 throws you a nice error and the task fails with Status: FAILED: An error occurred during the conversion:

image

When you look at the Log Highlights window, you get a little bit more information:

image

Looking even deeper in the logfile, a message is logged that an Unknown controller is detected.  So VMware Converter 4.3 doesn’t know the Paravirtual Controller!

The solution is quite simple for this problem:

– Change all Paravirtual controllers to LSI Logic (VM MUST be powered off)

– Do NOT poweron the VM from now on

– Perform the Convert, make sure VM is not powered on automatically after convert

– Change SCSI controller back to Paravirtual

– Power on VM

To change a SCSI controller, open Edit Settings… from the VM and select the SCSI Controller.  Click the Change Type… button and modify the SCSI Controller Type.

image

Done!

 

VMware confirmed this as a known bug in Converter 4.3.  It will be solved in version 5.0

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Categories: VMware, vSphere
  1. guymontag
    October 20, 2011 at 19:20

    Thanks, that solved my import machine issue

  1. March 1, 2012 at 11:46

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