Unraid Windows虚拟机使用Virtio-FS共享文件

type

status

date

slug

summary

virtiofs

unraid目前支持通过virtiofs的方式直接挂在挂载宿主机目录(不基于网络), 效率要远好于smb/nfs

virtiofs - shared file system for virtual machines

https://virtio-fs.gitlab.io/

Virtiofs is a shared file system that lets virtual machines access a directory tree on the host. Unlike existing approaches, it is designed to offer local file system semantics and performance.

对已经创建的VM使用virtiofs需要在xml下进行如下修改

libvirt: Sharing files with Virtiofs

libvirt, virtualization, virtualization API

https://libvirt.org/kbase/virtiofs.html

usage

在windows VM下需要安装额外的驱动: virtiofs已经包含在virtio-win.iso中, 但是还需要winFsp

WinFsp is system software that provides runtime and development support for custom file systems on Windows computers.

WinFsp

https://winfsp.dev/

virtiofs - shared file system for virtual machines / Windows HowTo

https://virtio-fs.gitlab.io/howto-windows.html

Windows 11 Guest VM with VirtIO on Libvirt - Kevin Locke's Homepage

Notes on running Windows 11 (or 10) in a virtual machine with paravirtualized (virtio) drivers using libvirt.

https://kevinlocke.name/bits/2021/12/10/windows-11-guest-virtio-libvirt/

virtio-win.iso会安装如下Service

在winFsp安装好后, 需要配置一下与该Service的联动关系

在cmd管理员模式下(powershell不支持下面命令)

Note: 上述设置, 如果在host中设置了多个挂载点, 只能挂载最后一个, 原因如下

Multiple mounts can't be served by VirtIO-FS service because it's a single process, but WinFsp.Launcher service can run multiple VirtIO-FS processes:

如果需要挂载多个硬盘, 需要进行如下操作：

VirtIO FS: Shared file system

Windows paravirtualized . Contribute to virtio-win/kvm-guest-drivers-windows development by creating an account on GitHub.

https://github.com/virtio-win/kvm-guest-drivers-windows/wiki/VirtIO-FS:-Shared-file-system#multiple-virtio-fs-instances

先把VirtioFsSvc停止并关闭自动启动(不执行上述命令就行):

-i 可以酌情添加, 表示CaseInsensitive. 如果是用来安装一些软件, 该选项可以提高兼容性.

Note:

Here viofsY and viofsZ are instance names for WinFsp.Launcher. They are selected arbitrary, but must differ between instances.

上述命令只能在cmd(admin)下运行, 不支持powershell

BAT脚本 (使用win下的“任务计划程序”设置为开机以管理员身份运行):

Note: 需要等待WinFsp.Launcher启动后才能执行命令, 否则是无效的.

有关WinFsp.Launcher和fsreg.bat更多说明:

WinFsp Tutorial · WinFsp

https://winfsp.dev/doc/WinFsp-Tutorial/

Virtio-FS之前在windows上有个case-sensitive issue(#669), 不过目前已经被解决

in the Windows guest, open regedit, add HKEY_LOCAL_MACHINE\SOFTWARE\VirtIO-FS\CaseInsensitive as a DWORD with value 1 and restart the virtio-fs service or reboot.

Alternatively, the virtiofs binary can be started with -i.