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Cold migration fails with the error: Incompatible device backing specified for device (9105247)

Details

  • Cold Migration fails
  • You see the error:

    Incompatible device backing specified for device #

  • The VPXD logs contain the entries:

    Passthrough backing not supported: (vim.vm.device.VirtualCdrom)

    Exception thrown vim.fault.InvalidDeviceBacking

Solution

This issue may occur if CD-ROM properties are configured incorrectly.
 
You must ensure that the CD-ROM device is configured correctly.
 
To verify CD-ROM configuration:
  1. Click VM > Settings to open the virtual machine settings editor.
  2. On the Hardware tab, check the CD-ROM properties. If the CD-ROM is set to Host Device, change it to Client Device
  3. If no physical drive or ISO image is connected, check the .vmx file to see if it indicates if a CD-ROM or an ISO image is connected.
  4. If the .vmx file indicates a connected device, remove the CD-ROM from the virtual machine and add a new CD-ROM. The .vmx file is updated with the correct CD-ROM setting.

Tags

cold-migration-fails

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