Crosvm supports virtio-fs, a shared file system that lets virtual machines access a directory tree on the host. It allows the guest to access files on the host machine. This section will explain how to create a shared directory. You can also find a runnable sample in tools/examples/example_fs
.
Run following commands in host machine, to create a shared directory:
mkdir host_shared_dir HOST_SHARED_DIR=$(pwd)/host_shared_dir crosvm run \ --shared-dir "$HOST_SHARED_DIR:my_shared_tag:type=fs" \ ... # usual crosvm args
In the --shared-dir
argument:
$HOST_SHARED_DIR
in this example).my_shared_tag
in this example).To see available options, run crosvm run --help
.
Next, switch to the guest OS and run the following commands to set up the shared directory:
sudo su mkdir /tmp/guest_shared_dir mount -t virtiofs my_shared_tag /tmp/guest_shared_dir
You can now add files to the shared directory. Any files you put in the guest_shared_dir
will appear in the host_shared_dir
on the host machine, and vice versa.