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1. Make sure to have build a Lustre kernel before continuing. (Other kernel configurations probably work too except the stock kernel).
2. In UTM first run dracut --force --no-hostonly  which rebuilds the initramfs with all drivers available. This is important to support the storage bus type in VMware. Later (when in VMware), dracut --force  rebuilds initramfs only with the needed drivers.
3. Shutdown the VM and convert the qcow2 VM file to vmdk via qemu-img . If command not available, install qemu (e.g., via brew: brew install qemu ) ). This command creates a new vmdk file, leaving qcow2 untouched.:

   Code Block
   language bash theme Eclipse
   # First, navigate to the UTM VM directory qemu-img convert -p -f qcow2 -O vmdk <VM_file_name>.utm/Data/*.qcow2 ~/Downloads/rocky8-7.vmdk

4. Add VM in VMware Fusion and use Create a custom virtual machine , choose Use an existing virtual disk .

5. Boot into the existing Lustre kernel.

6. Final steps:

   1. Fix swap: swapon /dev/mapper/rl-swap --fixpgsz 

   2. The NIC has changed, so the old config file no longer applies: Navigate to /etc/sysconfig/network-scripts/ , change the file name and the config, i.e., the NAME  and DEVICE  fields. 

   3. Set a new hostname

   4. Regenerate hostkeys cd /etc/ssh && rm ssh_host_* && ssh-keygen -A 

   5. (optional) nvme drivers on EL8 seem to be buggy regarding low power states. This results in an unresponsive machine for 30 seconds. syslog reports nvme nvme0: I/O 123 QID 2 timeout, aborting; nvme nvme0: Abort status: 0x0. This can be avoided by changing the disk interface to SATA in the VM disk settings.

7. 7. Reboot and done.