Xenserver: Deleting VDIs locked by the control domain

You can run into a situation where during a canceled move, a VDI is created on a SR that is locked by the control domain, even after a reboot.

Here is the method I used to solve this situation: 

1. Find the UUID of the VDI: xe vdi-list name-label = <Name of the VDI>
2. Find the UUID of the block device that the VDI is mounted with: xe vbd-list vdi-uuid=<UUID of the VDI>
3. Unplug the block device, this will corrupt the VDI: xe vbd-unplug uuid=<UUID of the block device>
4. Make the control domain forget the vdi: xe vdi-forget uuid=<UUID of the VDI>
5. Rescan the SR: xe vdi-scan sr-uuid=<UUID of the SR>
6. Destroy the VDI file: xe vdi-destroy uuid=<UUID of the VDI>