Cannot attach disk to Virtual Machine: Domain already contains a disk with that address

Solution Verified - Updated -

Issue

  • Cannot attach disk to VM with the following error:
error: Requested operation is not valid: Domain already contains a disk with that address
  • My Commvault backups are failing due to the error "Unable to attach disks for virtual machine vm.example.com
  • Some backups succeed, others fail when more than 6 disks are attached to the backup VM simultaneously

Environment

  • Red Hat Virtualization 4.3
  • Red Hat Enterprise Linux 7.7 (Virtualization host)
  • libvirt-4.5.0-23.el7.x86_64

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