I am tearing my hair out trying to solve this permissions problem where files created by the guest cannot be accessed on the host.
I have an Ubuntu 20.04 host and a Ubuntu 20.04 guest running through KVM. I have a shared mount setup in mapped mode. The host directory is
/home/user/VMs/shared/syncthing/ accessible through the guest vm at
/hostmount. I am mounting from within the guest with
sudo mount -t 9p -o trans=virtio,version=9p2000.L /hostmount /hostmount. The guest VM is launched using virt-manager under the regular account
- The host can create files int the share which can be read and modified by the guest.
- The guest can create files in the share but they cannot be read or modified by the host user.
If I to a
touch /hostmount/test.file from inside the guest as regular user
user, on the host side I see the following permissions for
ls –l test.file:
-rw------- 1 libvirt-qemu kvm 0 Feb 4 02:51 /home/user/VMs/shared/syncthing/test.file
Of course, I could
chown the file after creation, but how do I either:
- Force the guest VM to create files as
useron host access to files created by guest vm (
I have tried the suggestions from this answer. They work on pre-existing files but don't work for when the guest creates new files.