How to install Windows10 VM on FreeBSD 13.0 using bhyve and ZFS.

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1. Preparing the Host

First, load the bhyve kernel module:
# kldload vmm
 
Then, create a tap interface for the network device in the virtual machine to attach to. In order to for the network device to participate in the network, also create a bridge interface containing the tap interface and the physical interface as members. In this example, the physical interface is em0:
# ifconfig tap0 create
# sysctl net.link.tap.up_on_open=1
net.link.tap.up_on_open: 0 -> 1
# ifconfig bridge0 create
# ifconfig bridge0 addm em0 addm tap0
# ifconfig bridge0 up

2. Using ZFS with bhyve Guests

A ZFS volume can be created by:
# zfs create -V88G -o volmode=dev zroot/win10disk0
 
If you want to destroy ZFS file.
# zfs list
 
For example the ZFS file you want to destroy is  win10disk0:
# zfs destroy  zroot/win10disk0

3. Preparing for the Installation

Download an installation image of  Windows10 to install:

Install VNC client
# pkg install tightvnc

Download virtio-win driver.
 
In order to make use of the UEFI support in bhyve, first obtain the UEFI firmware images. This can be done by installing sysutils/bhyve-firmware as follows:
# pkg install sysutils/bhyve-firmware

4. Installation Windows10

# sh installwin10.sh
 
If there is warning message as follows:
vm_reinit: Device busy

The instance of the virtual machine needs to be destroyed before it can be started again:
# bhyvectl --destroy --vm=guestwin10

The installwin10.sh script is as follows(change the /path/to/windows10.iso to your own path ):
#!/bin/sh
bhyve -c 2 -m 2G -w -H \
-s 0,hostbridge \
-s 1,ahci-cd,/path/to/windows10.iso \
-s 2,ahci-hd,/dev/zvol/zroot/win10disk0 \
-s 3,virtio-net,tap0 \
-s 29,fbuf,tcp=0.0.0.0:5900,w=1280,h=720,wait \
-s 30,xhci,tablet \
-s 31,lpc \
-l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \
guestwin10

Understanding bhyve command-line options:
  • -c : number of  virtual CPUs
  • -m : RAM/memory size for VM 
  • -w : ignore unimplemented MSRs
  • -H : host filesystem to export to the loader
  • -s : Configure a virtual PCI slot and other function such as hard disk, cdrom, and other devices
  • -l : the OS loader to use(uefi needed for non-FreeBSD oses such as Linux/Windows guests)

Open a new terminal to use VNC client.
$ vncviewer 
Input 0.0.0.0:5900 into the popup window. And installing windows10. The VNC window will close when windows10 restart.
 

5. Continue to installing Windows10

Continue to finish installing windows10.
# sh startwin10.sh
The startwin.sh script is as follows(change the /path/to/virtio-win-0.1.118.iso to your own path ):
#!/bin/sh
bhyve -c 2 -m 2G -w -H \
-s 0,hostbridge \
-s 1,ahci-cd,/path/to/virtio-win-0.1.118.iso \
-s 2,ahci-hd,/dev/zvol/zroot/win10disk0 \
-s 3,virtio-net,tap0 \
-s 29,fbuf,tcp=0.0.0.0:5900,w=1280,h=720,wait \
-s 30,xhci,tablet \
-s 31,lpc \
-l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \
guestwin10 
 
The VNC window will close again when windows10 restart. 

Let's run startwin10.sh AGAIN.
# sh startwin10.sh

6. Installing network driver virtio-win 

Click source file manager, and click the computer to find the CD driver virtio-win.
virtio-win -> NetKVM -> w10 -> amd64 or x86(depend on your CPU type) -> netkvm(right click) -> Installation.

After configured the network of windows10, you can start windows10 without virtio-win. So the script win10.sh that starting windows10  as follows:
#!/bin/sh
bhyve -c 2 -m 2G -w -H \
-s 0,hostbridge \
-s 2,ahci-hd,/dev/zvol/zroot/win10disk0 \
-s 3,virtio-net,tap0 \
-s 29,fbuf,tcp=0.0.0.0:5900,w=1280,h=720,wait \
-s 30,xhci,tablet \
-s 31,lpc \
-l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \
guestwin10
 

7. Persistent Configuration

In order to configure the system to start bhyve guest at boot time, the following configurations must be made in the specified files:
 
/etc/sysctl.conf
net.link.tap.up_on_open=1
 
/etc/rc.conf
cloned_interfaces="bridge0 tap0"
ifconfig_bridge0="addm em0 addm tap0"
kld_list="vmm"

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