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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:
published: true
date: 2023-02-02T19:13:08.447Z
date: 2023-05-29T09:14:33.306Z
tags:
editor: markdown
dateCreated: 2022-08-13T00:16:17.437Z
---
# Sharing a directory
# Sharing a directory between the host and the guest
## Virtio-fs in a nutschell
[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 therefore a perfect fit for Phyllome OS.
Just as with other `virtio` devices, `virtio-fs` requires specialized drivers to be written for the host and the guest operating system.
## The guest
> For KVM/QEMU, as of January 2023, virtio-fs is only available for virtual machines managed by the system libvirt instance (`qemu:///system`)
{.is-warning}
> 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.
> 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.
Just as with other virtio devices, it requires specialized drivers to be written for the guest operating system.
## The guest
### Edit XML configuration
* Memory backing needs to be added to the XML definition:
@ -66,7 +68,7 @@ Just as with other virtio devices, it requires specialized drivers to be written
* To make it permanent, edit `/etc/fstab` to look like the following:
```
share /mnt/ virtiofs rw,noatime,_netdev 0 0
share /mnt/ virtiofs rw,noatime,_netdev 0 2
```
* Make sure it works before rebooting the guest virtual machine, by un-mounting the share