[Qemu-devel] 答复: Re: New function: Remot USB support in qemu

[Qemu-devel] 答复: Re: New function: Remot USB support in qemu

[yuan.zhong]

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On Do, 2017-04-27 at 14:30 +0800, yuan.zhong@zte.com.cn wrote:＞ ＞ Mr. Hoffmann,＞＞  ＞ ＞ ＞ Thank you for your time.＞ ＞ ＞ ＞ ＞ ＞ This email will describe a new module that I'd like to commit to the＞ ＞ qemu code source.＞ ＞ ＞ ＞ We call it as remote usb, and this is features:＞ ＞ ＞ ＞ 1. real usb device is aside on a windows client.＞ ＞ ＞ ＞ 2. keeping a connection between the client and the VMs host OS＞ ＞ ＞ ＞ 3. qemu simulate a remote usb device through our remote usb module＞ ＞ ＞ ＞ 4. the communication between real usb device and the simulation remote＞ ＞ usb is based on USB/IP protocol.＞ qemu supports that already.  It's called usb redirection.＞ https://www.spice-space.org/page/UsbRedir＞ https://github.com/SPICE/usbredir＞ usb redirection can use either plain tcp or a spice channel as＞ transport.  The spice client supports usb devices on windows clients.＞ Hans (Cc'ed, usbredir author) looked at the USB/IP protocol and found a＞ number of deficits and decided to not use it because of that.  I don't＞ remember the details though.＞ So I think using the existing usb redirection support is the better＞ option for you.＞ cheers, ＞  Gerd










Thank you for your reply.

 Although qemu has usb redirection, it can not boot from the USB (install os)

however, we can boot from  remote usb to install os，this is amazing function.




How do you think of this please?















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原始邮件



发件人： ＜kraxel@redhat.com＞
收件人：袁仲10192427
抄送人： ＜afaerber@suse.de＞ ＜pbonzini@redhat.com＞ ＜qemu-devel@nongnu.org＞ ＜hdegoede@redhat.com＞
日 期 ：2017年04月27日 15:39
主 题 ：Re: New function:　Remot USB support in qemu





On Do, 2017-04-27 at 14:30 +0800, yuan.zhong@zte.com.cn wrote:
＞ Mr. Hoffmann,
＞ 
＞ 
＞ Thank you for your time.
＞ 
＞ 
＞ This email will describe a new module that I'd like to commit to the
＞ qemu code source.
＞ 
＞ We call it as remote usb, and this is features:
＞ 
＞ 1. real usb device is aside on a windows client.
＞ 
＞ 2. keeping a connection between the client and the VMs host OS
＞ 
＞ 3. qemu simulate a remote usb device through our remote usb module
＞ 
＞ 4. the communication between real usb device and the simulation remote
＞ usb is based on USB/IP protocol.

qemu supports that already.  It's called usb redirection.
https://www.spice-space.org/page/UsbRedir
https://github.com/SPICE/usbredir

usb redirection can use either plain tcp or a spice channel as
transport.  The spice client supports usb devices on windows clients.

Hans (Cc'ed, usbredir author) looked at the USB/IP protocol and found a
number of deficits and decided to not use it because of that.  I don't
remember the details though.

So I think using the existing usb redirection support is the better
option for you.

cheers,
  Gerd

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Re: [Qemu-devel] 答复: Re: New function: Remot USB support in qemu

[Gerd Hoffmann]

  Hi,

>  Although qemu has usb redirection, it can not boot from the USB
> (install os)

Boot from redirected usb devices works just fine here.

cheers,
  Gerd