Στις 8/3/2012 08:49, ο/η Alon Levy έγραψε:
On Thu, Mar 08, 2012 at 08:35:56AM +0200, Alon Levy wrote:
On Wed, Mar 07, 2012 at 11:49:53PM +0200, Georgios Petasis wrote:
Στις 7/3/2012 22:13, ο/η Alon Levy έγραψε:
sudo yum install tcpdump
sudo tcpdump -i lo -w /tmp/spice.cap
hopefully that file will be small (you only need a few seconds of
capture for the key presses and virt-manager spice connection, i.e.
window open). compress it if it's too large.
Dear Alon,
I have placed the results here:
http://server.intellitech.gr/spice.cap
It does look like a binary file. Is it supposed to be this way?
Yes. Actually the file ending should have been pcap. It's a standard
format for network captures which I can read with wireshark with the
spice dissector and look for the key presses, just trying to figure out
if it's a problem at the client side or server/qemu side.
Sorry, wrong conclusion, it's probably spice but you didn't start the
capture *before* the virt-manager connection.
Perhaps an easier way to achieve that would be:
destroy the vm. (stop it from virt-manager)
start the capture (tcpdump -i ...)
start the vm.
do some key presses where you can see they don't have any affects.
stop the capture.
compress it this time - will save on the transport:
bzip2 spice.cap
Thanks,
Alon
Dear Alon,
The VM runs on a headless pc, that I access through VNC.
I did the following:
a) Installed wireshark, run as root (couldn't manage to run it as a
normal user, even after adding the user to the wireshark group - perhaps
a selinux denial).
b) Started capture on lo. I waited for a while, nothing got captured.
c) I started virt-manager, and then started the VM. Nothing captured.
d) I displayed the VM in virt-manager viewer, and capture started. I
waited until the capture log stopped having new entries.
e) I verified that each time I move the mouse, packets were captured.
f) I verified that when I press keys, again packets are logged.
I have saved the capture from inside wireshark here:
http://server.intellitech.gr/spice.cap.bz2
Towards the end of the capture, is only key presses, and the mouse
movement outside the VM viewer, to stop capturing.
I haven't managed to find the spice dissector in wireshark (I got
through yum).
Regards,
George
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