Converting VMWare Windows VM to run on Linux hypervisors

  1. jimbo45's Avatar
    Posts : 7,257
    Windows / Linux : Centos, Ubuntu, OpenSuse
       #1

    Converting VMWare Windows VM to run on Linux hypervisors


    Hi Virtual Machine user Geeks !!!

    You can convert Windows VMWare VM's to run on KVM or XEN --- these are 2 of the Linux HYPERVISORS equivalent to HYPER-V on Windows.

    For XEN (although KVM these days is the preferred method) :

    If you are using a Linux Host and have Windows VM's running under VMWare here's an interesting little experiment : Get the VM to run under XEN (one of Linux's HYPERVISOR). Copy / backup the VMWARE VM though first.

    1) you need to get the .vdmk files into a single "big" file if you used the option to create the VHD in "chunks".

    run this script : (as root of course)

    # for i in `ls *[0-9].vmdk`; do qemu-img convert -f vmdk $i -O raw ${i/vmdk/raw} ; done
    # cat *.raw >> flattened.img

    2) convert to "raw" using "Good old qemu" -- still working !!!

    # qemu-img convert vm1.vmdk -O raw /vms/vm1/vm1.img

    3) Create an appropriate Xen Project VM configuration file in /etc/xen/vm1/, with a line specifying the converted file as disk:
    disk = [ ‘file:/vms/vm1/vm1.img,hda,w’ ]

    4) Boot and go

    Still got some sound issues but looks good - ensure of course libvirt packages are installed.

    I'll have a go also with the other Linux HYPERVISOR system KVM and see what happens there too.

    I'm really interested in comparing performance of Windows VM's under these with Ms's HYPER-V - although one disadvantage of HYPER-V using a W10 Host is that the overhead of the Host OS (Windows 10) will be much higher than that of a lean mean linux distro especially if you install without a GUI.

    @Kari -- any ideas on maximizing performance of Windows HYPER-V VM's on a Windows Host (preferably W10).

    This stuff is quite addictive so ensure you have plenty of time before starting !!!!!!

    KVM though IMO is the way to go with this but I already had a little experience with XEN.

    For KVM : If you have RHEL or can get the virt-v package : it's easier but can't gurantee that you can do this easily on non Red Hat type distros. I have RHEL7/8 and Centos so no prob here.

    Converting Virtual Machines from Other Hypervisors to KVM with virt-v2v in RHEL 7 - Red Hat Customer Portal

    Works also on CENTOS (make sure >7.2) which is easily available (free) if you can't get RHEL --it's pretywell 100% comaptible with RHEL anyway

    package installs just fine on my CENTOS 7.6 system.

    Click image for larger version. 

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    will post results of VM's back later


    Cheers
    jimbo
    Last edited by jimbo45; 1 Week Ago at 05:20. Reason: Added details also for running with KVM
      My ComputerSystem Spec


 

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