Re: [Xen-users] Is Xen and Qemu serial driver code related ?

[Aleš Rom <ales.rom@xxxxxxxxxxxx>]

It looks like protocol related problem. I have some additional info if 
someone is interested.
I hooked up two boxes with serial cable. First one is WinXP on real 
hardware, second one virtualized WinXP on FC6.
I started Hyper Terminal on both sides. Console communication is OK. 
Then I tried file transfer.
1. Real to virtual file transfer is good, other way not possible - using 
Zmodem protocol
2. Both ways file transfer is good - using Kermit protocol
If I try same thing on non virtual boxes, I don't have  this problem no 
matter what protocol I use.
The problem is that I can't change protocol when using proprietary 
application (for Win only) and this special device on COM port.
http://www2.sma.de/en/solar-technology/products/communication/communication-products-software/sunny-boy-control-plus/overview/index.html
On the other way, emulated serial port is not acting the same as real 
one. Is this question for xen developers? Can I try anything else?
Thank you.

Aleš


Ulrich Windl pravi:
> Have you tried good old kermit (to transfer files via the serial port)? Generally 
> I'd say that your communication protocol isn't fault-tolerant, unless you have a 
> complete lock up of the serial driver. Without knowing the details, there's little 
> one can say.
> Ulrich
>
> On 8 Feb 2007 at 13:54, Ales Rom wrote:
>
>   
> > Hi.
> >
> > A noticed a very strange thing. A few weeks ago I installed WindowsXP 
> > under qemu. I have serial device attached to COM1 port and comunication 
> > works.
> > Basicaly I have to download a few hundred bytes from that serial device 
> > to computer. Every time comunication stops at 83% (5/6).
> > The weird thing is, that when I use Xen, I can see exactly same thing. 
> > Stops at 83%. Is this related or just coincidence? Is it my hardware?  
> > Windows on "real" hardware doesn't have this problem.
> > Ales
> >
> >
> >     

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