Its not easy :) I hope it would
Vdsm its a multiprocess program. It runs simultaneously tasks and monitors 
them. You can use GDB to debug the main process and watch threads step (if you 
want more information about that i can help)
Otherwise I prefer the oldschool print debuging.. it always works great with 
VDSM. you just need to add comment where you want to see the values or check if 
the program went there. All you need to do is to edit the specific installed 
files (located at /usr/share/vdsm) restart the service and wait for your print 
in the log.. 

Good luck 


----- Original Message -----
From: "bigclouds" <bigclo...@163.com>
To: users@ovirt.org
Sent: Thursday, February 28, 2013 5:26:14 PM
Subject: [Users] how to debug vdsm and node codes



a debug environment in which to debug vdsm and node code line by line 


thanks. 


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