2. Workload Preparation

Linux Guests requirements

• Kernel Headers (kernel-devel)
• VM must be shut down cleanly (hibernation or suspend mode are not supported)
• Virtio drivers should be supported by the running Linux kernel (minimum kernel version v2.6.30)

Windows Guests

• Disable fast startup
• Must be shut down cleanly from inside the guest (hibernation or suspend modes are not supported)
• Virtio Storage/Network drivers can be injected automatically, but installing them first is good as well.
• Windows Server 2016 onwards will require UEFI firmware to boot up correctly.

Both Guests

• There should be no Snapshots in vCenter for the virtual machine
• Verify BIOS/UEFI firmware usage on guest. OneSwap should detect this however please verify before first boot.
  • If UEFI boot is enabled, OpenNebula template->OS&CPU->Boot section should be configured as follows:
    • CPU architecture: x86_64
    • Machine type: q35
    • UEFI firmware: UEFI: /usr/share/OVMF/OVMF_CODE.secboot.fd for Secure Boot, otherwise usr/share/OVMF/OVMF_CODE.fd

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