[Xen-users] Problems with live migrate on xen-testing

[Niraj Tolia <ntolia@xxxxxxxxx>]

I am using xen-testing and trying to migrate a VM between two
machines. However, the migrate command fails with the error "Error:
errors: suspend failed, Callback timed out".

After the error on the source machine, while the VM shows up on xm
list at the destination, xfrd.log (on the destination) shows that its
trying to reload memory pages beyond 100%. The number of memory pages
reloaded keeps on going up until I use 'xm destroy'.

The process of xm save/scp <saved image>/xm restore the machine works
fine though. Any ideas why live migration would not work? The combined
usage of dom0 and domU is around half the physical memory present in
the machine.

The traceback from xend.log

Traceback (most recent call last):
  File "/usr/lib/python2.3/site-packages/twisted/internet/defer.py",
line 308, in _startRunCallbacks
    self.timeoutCall.cancel()
  File "/usr/lib/python2.3/site-packages/twisted/internet/base.py",
line 82, in cancel
    raise error.AlreadyCalled
AlreadyCalled: Tried to cancel an already-called event.

xfrd.log on the sender is full of "Retry suspend domain (120)" before
it says "Unable to suspend domain. (120)" and "Domain appears not to
have suspended: 120".

Niraj

-- 
http://www.cs.cmu.edu/~ntolia

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users