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docs: update gofurther/virtiofs

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title: Share a host directory with a guest using virtiofs title: Share a host directory with a guest using virtiofs
description: description:
published: true published: true
date: 2023-01-24T16:49:37.566Z date: 2023-02-02T19:05:40.611Z
tags: tags:
editor: markdown editor: markdown
dateCreated: 2022-08-13T00:16:17.437Z dateCreated: 2022-08-13T00:16:17.437Z
@ -10,16 +10,18 @@ dateCreated: 2022-08-13T00:16:17.437Z
# Sharing a directory # Sharing a directory
> *As of January 2023, virtio-fs is only available for virtual machines managed by the system libvirt instance (`qemu:///system`)* > For KVM/QEMU, as of January 2023, virtio-fs is only available for virtual machines managed by the system libvirt instance (`qemu:///system`)
{.is-info}
> *As of January 2023, virtio-fs does not feature a read-only mode. Do not share a host directory with an untrusted guest*.
{.is-warning} {.is-warning}
[Virtio-fs](https://virtio-fs.gitlab.io/), shorts for virtio shared filesystem, allows you to share a directory located on the host with a guest. > As of January 2023, virtio-fs does not support read-only mode, meaning a guest will be able to write to the host's folder.
{.is-warning}
[Virtio-fs](https://virtio-fs.gitlab.io/), shorts for virtio shared filesystem, allows for a directory located on the host to be shared with a guest.
It is designed to be fast and optimized for local usage, when the host and the guest are located on the same physical machine. It is designed to be fast and optimized for local usage, when the host and the guest are located on the same physical machine.
Just as with other virtio devices, it requires specialized drivers to be written for the guest operating system.
## The guest ## The guest
### Edit XML configuration ### Edit XML configuration
@ -46,8 +48,8 @@ It is designed to be fast and optimized for local usage, when the host and the g
[...] [...]
<filesystem type="mount" accessmode="passthrough"> <filesystem type="mount" accessmode="passthrough">
<driver type="virtiofs"/> <driver type="virtiofs"/>
<source dir="/mnt/"> # The host directory to be shared with the guest <source dir="/opt/share"> # The host directory to be shared with the guest
<target dir="share"/> # Contrary to what the name implies, this is the tag used inside the guest <target dir="share"> # The target dir value refers to the tag used inside the guest to describe the share.
</filesystem> </filesystem>
[...] [...]
</devices> </devices>
@ -57,7 +59,7 @@ It is designed to be fast and optimized for local usage, when the host and the g
### Mount the folder inside the guest ### Mount the folder inside the guest
* Inside the guest VM, mount the folder using the following commmand to mount the `/mnt` host directory on the guest, using also the `/mnt` point: * Inside the guest VM, mount the folder using the following command to mount the `/mnt` host directory on the guest, using also the `/mnt` point:
`# mount -t virtiofs share /mnt/` `# mount -t virtiofs share /mnt/`