I am using libvirt with qemu on a debian host. One virtual machine has a 9p mount point defined:

<filesystem type='mount' accessmode='mapped'>
  <source dir='/mnt/pool/share'/>
  <target dir='share'/>
  <address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/>

The default apparmor configuration (which is apparently created by virt-aa-helper) does not allow me to create hard links on the 9p volume.

I made it work by adding the following line to /etc/apparmor.d/abstractions/libvirt-qemu

  "/mnt/pool/share/**" rwl,

This works but has the following problems:

  1. It allows all hosts to read/write to this directory, not only the one host I need
  2. It requires editing a conffile that is regularly updated which is probably not a good idea because it makes updates to the debian package harder
  3. It is not configured in the libvirt xml file which makes portability harder and is one extra step

Is there a better way?


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