[Xen-devel] migrate to localhost - should it work?

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

Should a migrate to localhost work? In trying to test the gplpv drivers,
when they are active a migrate to localhost doesn't work while it does
with the qemu drivers.

In my xend.log I get this:

"
[2008-07-15 12:58:26 28893] DEBUG (DevController:595)
hotplugStatusCallback
/local/domain/0/backend/vbd/245/768/hotplug-status.
[2008-07-15 12:58:26 28893] DEBUG (DevController:609)
hotplugStatusCallback 5.
[2008-07-15 12:58:26 28893] ERROR (XendCheckpoint:297) Device 768 (vbd)
could not be connected.
Device /dev/vg00/virt-virtdemo-0-snap is mounted in a guest domain,
and so cannot be mounted now.
Traceback (most recent call last):
  File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendCheckpoint.py", line
295, in restore
    dominfo.waitForDevices() # Wait for backends to set up
"

Which looks like a race between the old domain and the new domain in the
use of the block device. I suspect maybe this isn't a supported
operation? Or maybe I'm not doing something right with the save code in
gplpv.

Thanks

James

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