On Di, Okt 14, 2008 at 12:18:54 +0200, Ferenc Wagner wrote:
> Hi,
>
> I'm running two dom0s between which I (live) migrate domUs.
> Sometimes. Other times the migration seems to succeed, but the
> migrated domU is never unpaused, as the vif devices does not appear on
> the receiving host:
>
> [2008-10-13 16:56:21 19638] INFO (XendCheckpoint:373) Memory reloaded (1523
> pages)
> [2008-10-13 16:56:21 19638] INFO (XendCheckpoint:373) Domain ready to be
> built.
> [2008-10-13 16:56:21 19638] INFO (XendCheckpoint:373) Restore exit with rc=0
> [2008-10-13 16:56:21 19638] DEBUG (XendCheckpoint:344) store-mfn 719436
> [2008-10-13 16:56:21 19638] DEBUG (XendCheckpoint:344) console-mfn 778540
> [2008-10-13 16:56:21 19638] DEBUG (XendDomainInfo:1838)
> XendDomainInfo.completeRestore
> [2008-10-13 16:56:21 19638] DEBUG (XendDomainInfo:1008) Storing domain
> details: {'console/ring-ref': '778540', 'image/entry': '3224596480',
> 'console/port': '2', 'store/ring-ref': '719436', 'image/loader': 'gene
> ric', 'vm': '/vm/15bd1442-affa-1f26-e205-026998b2fddd',
> 'control/platform-feature-multiprocessor-suspend': '1', 'image/hv-start-low':
> '4118806528', 'image/guest-os': 'linux', 'image/virt-base': '3221225472', 'm
> emory/target': '131072', 'image/guest-version': '2.6', 'image/pae-mode':
> 'yes', 'console/limit': '1048576', 'image/hypercall-page': '3222278144',
> 'image/suspend-cancel': '1', 'cpu/0/availability': 'online', 'im
> age/features/pae-pgdir-above-4gb': '1',
> 'image/features/writable-page-tables': '0', 'console/type': 'xenconsoled',
> 'name': 'service.grid', 'domid': '5', 'image/xen-version': 'xen-3.0',
> 'store/port': '1'}
> [2008-10-13 16:56:21 19638] DEBUG (XendDomainInfo:1851)
> XendDomainInfo.completeRestore done
> [2008-10-13 16:56:21 19638] DEBUG (DevController:151) Waiting for devices vif.
> [2008-10-13 16:56:21 19638] DEBUG (XendDomainInfo:1092)
> XendDomainInfo.handleShutdownWatch
> [2008-10-13 16:56:21 19638] DEBUG (DevController:156) Waiting for 0.
> [2008-10-13 16:56:21 19638] DEBUG (DevController:595) hotplugStatusCallback
> /local/domain/0/backend/vif/5/0/hotplug-status.
> [2008-10-13 16:58:01 19638] ERROR (XendCheckpoint:297) Device 0 (vif) could
> not be connected. Hotplug scripts not working.
> Traceback (most recent call last):
> File "/usr/lib/xen-3.2-1/bin/../lib/python/xen/xend/XendCheckpoint.py",
> line 295, in restore
> dominfo.waitForDevices() # Wait for backends to set up
> File "/usr/lib/xen-3.2-1/bin/../lib/python/xen/xend/XendDomainInfo.py",
> line 586, in waitForDevices
> self.getDeviceController(devclass).waitForDevices()
> File
> "/usr/lib/xen-3.2-1/bin/../lib/python/xen/xend/server/DevController.py", line
> 152, in waitForDevices
> return map(self.waitForDevice, self.deviceIDs())
> File
> "/usr/lib/xen-3.2-1/bin/../lib/python/xen/xend/server/DevController.py", line
> 167, in waitForDevice
> (devid, self.deviceClass))
> VmError: Device 0 (vif) could not be connected. Hotplug scripts not working.
>
> Bummer. If I reboot the receiving dom0, the same migration succeeds
> without any problem. How could I further debug this problem? It used
> to work, but since then lots of software have been updated on the dom0
> (like udev for example). The hypervisors are 3.2.1, the dom0 kernels
> are 2.6.18. The same problems exists with straight domain creation,
> too: when the migration fails, I can't even create domains on that
> dom0, only after reboot...
What does show the command
brctl show
on the host in that moment?
> --
> I'd be grateful for any idea.
> Thanks,
> Feri.
>
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> http://lists.xensource.com/xen-users
--
WBR, i.m.chubin
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