Mounting Shared File System (directory) from KVM Host in Windows Guest

Original Source - Virtiofs Documentation / github Wiki

• Start by launching virt-manager
• Select your Virtual Machine
• You want to go to the View / Details sub section. Where you can add / edit hardware
• Go to the Memory Element and Check / Activate “Enable shared memory”
• Add a new Hardware , Type “Filesystem”, “Source Path” being the folder you want to share with your Windows Guest (eg: /home/user/sharing), “Target Path” being a Tag that you will use to identify it (eg: popos-sharing)
• Start your Windows Guest
• Install WinFSP, you need at least the Core Module - winfsp - GitHub page
• Install virtio-win-guest-tools, you need at least the viofs module - Fedora People - virtio direct downloads
• If you just want to share a single folder, you can just start the service and you're done (command: sc start VirtioFsSvc)

• Stop the VirtioFsSvc (command: sc stop VirtioFsSvc)
• Disable the Service from auto start (command: sc config VirtioFsSvc start=demand)
• Generate a configuration that is required with the following command. Remember to adapt to your virtiofs.exe location

"C:\Program Files (x86)\WinFsp\bin\fsreg.bat" virtiofs "<path to the binary>\virtiofs.exe" "-t %1 -m %2"

• Mount your folder with the following command:

"C:\Program Files (x86)\WinFsp\bin\launchctl-x64.exe" start virtiofs viofsZ mount_tag0 Z:

Note 1: “viofsZ” letter and “Z:” must match. This is the letter that the drive will be mounted to.

Note 2: “popos-sharing” is the tag you used when adding the Filesystem (Target Path)

• Repeat for other folders you want / need.