[Xen-devel] xmlrpclib.ProtocolError: <ProtocolError for /RPC2: -1 >

[Hollis Blanchard <hollisb@xxxxxxxxxx>]

I'm getting this error when trying to create a domain:

Unexpected error: xmlrpclib.ProtocolError

Please report to xen-devel@xxxxxxxxxxxxxxxxxxx
Traceback (most recent call last):
  File "/usr/sbin/xm", line 10, in ?
    main.main(sys.argv)
  File "/usr/lib/python/xen/xm/main.py", line 1233, in main
    rc = cmd(args)
  File "<string>", line 1, in <lambda>
  File "/usr/lib/python/xen/xm/main.py", line 598, in xm_subcommand
    cmd.main([command] + args)
  File "/usr/lib/python/xen/xm/create.py", line 1124, in main
    dom = make_domain(opts, config)
  File "/usr/lib/python/xen/xm/create.py", line 931, in make_domain
    raise ex
xmlrpclib.ProtocolError: <ProtocolError for /RPC2: -1 >

First I would like to propose this patch, which keeps the full traceback
intact:
diff -r 0ec0cb99f712 tools/python/xen/xm/create.py
--- a/tools/python/xen/xm/create.py     Tue Aug 08 18:58:53 2006 -0500
+++ b/tools/python/xen/xm/create.py     Tue Aug 08 19:29:25 2006 -0500
@@ -928,7 +928,7 @@ def make_domain(opts, config):
         import signal
         if vncpid:
             os.kill(vncpid, signal.SIGKILL)
-        raise ex
+        raise

     dom = sxp.child_value(dominfo, 'name')

Here's the full traceback:
Unexpected error: xmlrpclib.ProtocolError

Please report to xen-devel@xxxxxxxxxxxxxxxxxxx
Traceback (most recent call last):
  File "/usr/sbin/xm", line 10, in ?
    main.main(sys.argv)
  File "/usr/lib/python/xen/xm/main.py", line 1233, in main
    rc = cmd(args)
  File "<string>", line 1, in <lambda>
  File "/usr/lib/python/xen/xm/main.py", line 598, in xm_subcommand
    cmd.main([command] + args)
  File "/usr/lib/python/xen/xm/create.py", line 1124, in main
    dom = make_domain(opts, config)
  File "/usr/lib/python/xen/xm/create.py", line 913, in make_domain
    dominfo = server.xend.domain.create(config)
  File "/usr/lib/python2.3/xmlrpclib.py", line 1032, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib/python/xen/util/xmlrpclib2.py", line 121, in __request
    response = xmlrpclib.ServerProxy.__request(self, methodname, params)
  File "/usr/lib/python2.3/xmlrpclib.py", line 1319, in __request
    verbose=self.__verbose
  File "/usr/lib/python/xen/util/xmlrpclib2.py", line 86, in request
    return Transport.request(self, host, '/RPC2', request_body, verbose)
  File "/usr/lib/python2.3/xmlrpclib.py", line 1073, in request
    headers
xmlrpclib.ProtocolError: <ProtocolError for /RPC2: -1 >

It looks like the problem is that I've done something in C to crash the
python interpreter for Xend, or at least this message
in /var/log/xend.log is my only clue:

[2006-08-08 21:14:48 xend 1153] CRITICAL (SrvDaemon:195) Xend died due
to signal 9!  Restarting it.

Could we get a little better error-handling here? I don't know what the
right way is to detect that the other end of the XMLRPC connection has
gone away.

-- 
Hollis Blanchard
IBM Linux Technology Center


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