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Operations not supported

• Live VM migration.
• VM snapshot with memory is not supported.
  

  Current Limitations

• Reservation of GPU resources: CloudStack does not hold the GPU resources in cases like stopped VM or to recover a destroyed VM in the same host.
• XenServer supports only one VGPU creation per VM, so admin/user cannot create more than one VGPU for a VM.
• Host maintenance will put vGPU VMs in that host into stopped state and migrate non-vGPU VMs to other suitable hosts.

Upgrade Scenario

• During CloudStack Operation, cloudstack checks for GPU cards in all the hosts that are being managed by CloudStack.
• If cloudstack finds any GPU enabled host, it persists the entry in host_gpu_groups and vgpu_types table.

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