qemu命令总结
===================

.. image:: ./Qemu-logo-small.png
   :scale: 60%
   

#. **spice端口**

        .. code-block:: sh
                
           netstat -ntpl | grep qemu
           virsh domdisplay --type spice {Id or Name}




#. **创建镜像**

        .. code-block:: sh

            qemu-img create -f qcow2 ubuntu-14.04.qcow2 20G
            qemu-img info ubuntu-14.04.qcow2


#. **镜像压缩**

        .. code-block:: sh

            qemu-img convert -p -c -O qcow2 source.img destination.qcow2

#. **创建快照**

        .. code-block:: sh

            qemu-img create -f qcow2 -b base.qcow2 snapshot.qcow2

#. **resize**

        .. code-block:: sh

            qemu-img resize source.qcow2 +10G




声卡
------

#. 查询支持的声卡

        .. code-block:: sh

            [localhost ~] $ sudo /usr/libexec/qemu-kvm --soundhw ?
            Valid sound card names (comma separated):
            ac97        Intel 82801AA AC97 Audio
            hda         Intel HD Audio
            pcspk       PC speaker

            -soundhw all will enable all of the above

2 增加声卡

        .. code-block:: sh

            [localhost ~] $ sudo /usr/libexec/qemu-kvm --soundhw all

`Creating Guests with PXE <https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Host_Configuration_and_Guest_Installation_Guide/sect-Virtualization_Host_Configuration_and_Guest_Installation_Guide-Guest_Installation-Installing_guests_with_PXE.html>`_


`Red Hat Enterprise Linux 6 Virtualization Host Configuration and Guest Installation Guide <https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Host_Configuration_and_Guest_Installation_Guide/index.html>`_