[Xen-devel] HVM live migration error, probably related to 20691:054042ba73b6

[Brendan Cully <brendan@xxxxxxxxx>]

Is anyone else having trouble live-migrating HVM domains with rc2? It
fails immediately for me, with this in the xend log of the target:

[2010-01-20 13:53:17 4849] ERROR (XendDomainInfo:502) VM resume failed
Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/xen/xend/XendDomainInfo.py", line 498, 
in resume
    self._createDevices()
  File "/usr/lib/python2.5/site-packages/xen/xend/XendDomainInfo.py", line 
2352, in _createDevices
    devid = self._createDevice(devclass, config)
  File "/usr/lib/python2.5/site-packages/xen/xend/XendDomainInfo.py", line 
2314, in _createDevice
    return self.getDeviceController(deviceClass).createDevice(devConfig)
  File "/usr/lib/python2.5/site-packages/xen/xend/server/BlktapController.py", 
line 201, in createDevice
    if self.vm.image.memory_sharing:
AttributeError: 'NoneType' object has no attribute 'memory_sharing'

I'd guess there's an initialization order bug for the vm struct, but
haven't dug into it yet.

My HVM guest is using this disk config:
disk = [ 'tap:aio:/dev/vg0/xp,hda,w', ',hdc:cdrom,r' ]

it gets further along with phy (dies on map batch, probably because I
haven't brought over the err zeroing patch for xc_map_foreign_bulk).

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