####
QEMU
####

Basic VM command
================

.. code-block:: bash

   #!/bin/sh
   exec qemu-system-x86_64 \
       -machine type=q35,accel=kvm \
       -enable-kvm \
       -cpu host \
       -smp cores=6,threads=2,sockets=1 \
       -m 8G \
       -drive file=ubuntu.qcow2,format=qcow2 \
       -netdev user,id=mynet0 \
       -device e1000,netdev=mynet0 \
       -device qemu-xhci,id=xhci \
       -device usb-tablet,bus=xhci.0 \
       -usb \
       -device usb-ehci,id=ehci \
       -device usb-host,bus=usb-bus.0,hostbus=1,hostport=1 \
       -device intel-hda \
       -device hda-duplex \
       -name Ubuntu \
       -boot d \
       -monitor stdio \
       -display none \
       "$@"

.. admonition:: TODO

   Describe the command and split into parts and move them apart in sepatate
   sections.


Exchange files with the host using samba [#shared-folder]_
==========================================================

When running QEMU, add the following options to the ``qemu-system-x86_64``
invocation command::

  -netdev user,smb="/path/to/shared/directory",id=mynet0 \
  -device e1000,netdev=mynet0 \

The shared directory can be mounted by a guest Linux machine like this::

  mount -t cifs //10.0.2.4/qemu <mountpoint> -o user=<user>,pass=<password>

The ``<user>`` and the ``<password>`` can be almost *anything* existing or not,
even nothing, you even can provide just ``-o user=,pass=``.

The ``-t cifs`` part might be optional if ``mount`` supports inferring file
system type.

To mount it via ``/etc/fstab`` add the following line to the file::

  //10.0.2.4/qemu <mountpoint> cifs user=<user>,pass=<password> 0 0

On Windows you can just enter the following address into explorer's address
bar, no authentication required::

  \\10.2.0.4\qemu

Overall it looks like this:

.. image:: windows-guest-explorer-exe-qemu-samba.png

.. [#shared-folder] `Shared folder between QEMU Windows guest and Linux host / stackexchange.com <https://unix.stackexchange.com/a/183609>`_