De acordo com a documentação do libvirt , você pode simplesmente precisar ajustar seu target
.
Os documentos fornecem os seguintes exemplos:
<filesystem type='mount' accessmode='passthrough'>
<driver type='path' wrpolicy='immediate'/>
<source dir='/export/to/guest'/>
<target dir='/import/from/host'/>
<readonly/>
</filesystem>
<filesystem type='file' accessmode='passthrough'>
<driver name='loop' type='raw'/>
<driver type='path' wrpolicy='immediate'/>
<source file='/export/to/guest.img'/>
<target dir='/import/from/host'/>
<readonly/>
</filesystem>
Isso parece funcionar sem a necessidade de 9p.
No entanto, para centos, existe de fato um ajudante 9p prontamente disponível:
Available Packages
Name : nfs-ganesha-mount-9P
Arch : x86_64
Version : 2.3.2
Release : 1.el7
Size : 11 k
Repo : epel/x86_64
Summary : a 9p mount helper
URL : https://github.com/nfs-ganesha/nfs-ganesha/wiki
Licence : LGPLv3+
Description : This package contains the mount.9P script that clients can use
: to simplify mounting to NFS-GANESHA. This is a 9p mount helper.