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lukas 2023-02-02 19:13:10 +00:00
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@ -2,7 +2,7 @@
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: 2023-02-02T19:05:40.611Z date: 2023-02-02T19:13:08.447Z
tags: tags:
editor: markdown editor: markdown
dateCreated: 2022-08-13T00:16:17.437Z dateCreated: 2022-08-13T00:16:17.437Z
@ -39,7 +39,7 @@ Just as with other virtio devices, it requires specialized drivers to be written
</domain> </domain>
``` ```
* A filesystem device has to be added. * Add the filesystem device to the guest. In this the following case, the directory `/opt/share/` will be shared with the guest:
``` ```
<domain type="kvm"> <domain type="kvm">
@ -49,7 +49,7 @@ Just as with other virtio devices, it requires specialized drivers to be written
<filesystem type="mount" accessmode="passthrough"> <filesystem type="mount" accessmode="passthrough">
<driver type="virtiofs"/> <driver type="virtiofs"/>
<source dir="/opt/share"> # 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"> # The target dir value refers to the tag used inside the guest to describe the share. <target dir="share"> # The target dir value refers to the mount tag used inside the guest, not the target dir inside the guest
</filesystem> </filesystem>
[...] [...]
</devices> </devices>
@ -59,10 +59,24 @@ Just as with other virtio devices, it requires specialized drivers to be written
### Mount the folder inside the guest ### Mount the folder inside the guest
* 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: * Inside the guest VM, mount the folder using the following command to mount the `/opt/share` host directory to the guest, using also the `/mnt` point:
`# mount -t virtiofs share /mnt/` `# mount -t virtiofs share /mnt/`
* To make it permanent, edit `/etc/fstab` to look like the following:
```
share /mnt/ virtiofs rw,noatime,_netdev 0 0
```
* Make sure it works before rebooting the guest virtual machine, by un-mounting the share
`# umount /mnt/`
* and then mounting all share available in fstab:
`# mount all`
## Resources ## Resources
* Official website: https://virtio-fs.gitlab.io/index.html#status * Official website: https://virtio-fs.gitlab.io/index.html#status