Xen users - Jul 2008 - Migration of paused domains

Hello,

today I wanted to find out if it was possible to migrate a paused domain. So, I
tried the following:

# xm pause <dom>
# xm migrate <dom> <dest>

Unfortunately, the migration process would just hang before suspending the
domain and transferring its state. In order
to resume it and complete migration, I had to unpause the domain:

# xm unpause <dom>

After that, the process did get completed successfully.

-----

Then, I tried and track down the reason of this in the sources, and I came to
the following snip (XendDomainInfo.py):

def waitForShutdown(self):
      self.state_updated.acquire()
           try:
                while self._stateGet() in (DOM_STATE_RUNNING,DOM_STATE_PAUSED):
                self.state_updated.wait()
           finally:
                self.state_updated.release()

It looks like that makes it wait forever, since the domain remains in the
DOM_STATE_PAUSED state.

Now, the question is: is that the right behaviour or am I missing something? Is
it really not possible to migrate a
paused domain?

Thanks for your help,

- AS

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