[Xen-devel] xenstore watch for domU shutdown

[David Richardson <daverich04@xxxxxxxxx>]

Hey everyone,
 
 I'm trying to write a simple python program in dom0 that registers a watch on the xenstore to determine when a domU has shutdown.  Is there a particular token I should use?  Looking through the tools/python/xen/*.py code, I've come across the 'control/shutdown' token... seems promising? 
 
 My code is attached below.  As is, if fails to call the registered watch function on a domain shutdown.  Any help or suggestions would be greatly appreciated.  Thanks!
 
 ~Dave
 
 #####################BEGIN CODE##############################
 
 from xen.xend.xenstore.xsutil import *
 from xen.xend.xenstore.xswatch import *
 from sys import argv
 from xen.xend.xenstore.xstransact import xstransact
 
 #domid of the domU guest
 domid = int(argv[1])
 
 xs = xshandle()
 path = xs.get_domain_path(domid)
 
 def myHandleShutdownWatch(_):
     f = open("/scratch/TEST",
 "w")
     f.write("Shutdown called")
     f.close()
     return True
 
 mywatch = xswatch(path+"/control/shutdown",myHandleShutdownWatch)
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