Xen users - Aug 2009 - How to use windbg to debug XEN windows XP domainU under Suse 10sp2?

I found this article on http://wiki.xensource.com/xenwiki/XenWindowsGplPv,
but windbg display com8 reconnect forever.

AND RxBytes always 0.



Thank you 

 

Using the windows debugger under Xen

Set up Dom0

1.      Change/add the serial line to your Windows DomU config to say
serial=''pty'' 

2.      Add a line to /etc/services that says ''windbg_domU
4440/tcp''. Change
the domU bit to the name of your windows domain. 

3.      Add a line to /etc/inetd.conf that says ''windbg_domU stream tcp
nowait root /usr/sbin/tcpd xm console domU''. Change the domU bit to the
name
of your domain. (if you don''t have an inetd.conf then you''ll
have to figure
it out yourself... basically we just need a connection to port 4440 to
connect to the console on your DomU) 

4.      Restart inetd. 

Set up the machine you will be debugging on - another Windows machine that
can connect to your Dom0 from.

1.      Download the windows debugger from
<http://www.microsoft.com/whdc/devtools/debugging/installx86.Mspx>
Microsoft
and install. 

2.      Download the ''HW Virtual Serial Port'' application from
<http://www.hw-group.com/products/hw_vsp/index_en.html> HW Group and
install. Version 3 appears to be out, but i''ve only ever used 2.5.8. 

Boot your DomU

1.      xm create DomU (or whatever you normally use to start your DomU) 

2.      Press F8 when you get to the windows text boot menu and select
debugging mode, then boot. The system should appear to hang before the
splash screen starts 

Start HWVSP

1.      Start the HW Virtual Serial Port application 

2.      Put the IP address or hostname of your Dom0 in under ''IP
Address''

3.      Put 4440 as the Port 

4.      Select an unused COM port under ''Port Name'' (I just
use Com8)

5.      Make sure ''NVT Enable'' in the settings tab is unticked

6.      Save your settings 

7.      Click ''Create COM''. If all goes well it shuold say
''Virtual serial
port COM8 created'' and ''Connected device
<hostname>''

Run the debugger

1.      Start windbg on your other windows machine 

2.      Select ''Kernel Debug'' from the
''File'' menu

3.      Select the COM tab, put 115200 in as the baud rate, and com8 as the
port. Leave ''Pipe'' and ''Reconnect'' unticked 

4.      Click OK 

5.      If all goes well, you should see some activity, and the HWVSP
counters should be increasing. If nothing happens, or if the counters start
moving and then stop, quit windbg, delete the com port, and start again from
''Start HWVSP''. Not sure why but it doesn''t always
work the first time.

 




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