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