OpenStack Compute (nova)

  1. Bug #1319710
  2. Comment #2

Comment 2 for bug 1319710

Revision history for this message
Prateek khushalani (prateek-khushalani) wrote : Re: [Bug 1319710] Re: Live-migration failed with OpenStack Icehouse and Ubuntu 12.04

Hi,

its a bug it the code. The workaround is to comment the function in the
libvirt code which checks the flags of cpu while migration. Do make sure
manually that the cpu flags of both the compute nodes are same.

Regards,
Prateek Khushalani
On Jul 29, 2014 9:26 PM, "Rafael David Tinoco" <email address hidden>
wrote:

> ** This bug is no longer a duplicate of bug 1303536
> Live migration fails. XML error: CPU feature `wdt' specified more than
> once
>
> --
> You received this bug notification because you are subscribed to
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> Matching subscriptions: Prateek Khushalani
> https://bugs.launchpad.net/bugs/1319710
>
> Title:
> Live-migration failed with OpenStack Icehouse and Ubuntu 12.04
>
> Status in OpenStack Compute (Nova):
> New
>
> Bug description:
> When I do live-migration an instance between two compute-nodes have the
> same CPU, i got the following error:
> (@ nova-compute.log)
>
> 2014-05-15 15:39:21.563 2743 ERROR oslo.messaging.rpc.dispatcher [-]
> Exception during message handling: XML error: CPU feature `erms' specified
> more than once
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> Traceback (most recent call last):
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", lin
> e 133, in _dispatch_and_reply
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> incoming.message))
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", lin
> e 176, in _dispatch
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> return self._do_dispatch(endpoint, method, ctxt, args)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", lin
> e 122, in _do_dispatch
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> result = getattr(endpoint, method)(ctxt, **new_args)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/exception.py", line 88, in wrappe
> d
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> payload)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", li
> ne 68, in __exit__
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> six.reraise(self.type_, self.value, self.tb)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/exception.py", line 71, in wrappe
> d
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> return f(self, context, *args, **kw)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 309, in
> decorated_function
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher e,
> sys.exc_info())
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", li
> ne 68, in __exit__
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> six.reraise(self.type_, self.value, self.tb)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 296, in
> decorated_function
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher e,
> sys.exc_info())
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", li
> ne 68, in __exit__
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> six.reraise(self.type_, self.value, self.tb)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 296, in
> decorated_function
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> return function(self, context, *args, **kwargs)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 4418, in
> check_can_live_migrate_destination
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> block_migration, disk_over_commit)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4189,
> in check_can_live_migrate_destination
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> self._compare_cpu(source_cpu_info)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4331,
> in _compare_cpu
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> LOG.error(m, {'ret': ret, 'u': u})
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line
> 68, in __exit__
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> six.reraise(self.type_, self.value, self.tb)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4327,
> in _compare_cpu
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher ret
> = self._conn.compareCPU(cpu.to_xml(), 0)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 179, in doit
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> result = proxy_call(self._autowrap, f, *args, **kwargs)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in
> proxy_call
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher rv
> = execute(f,*args,**kwargs)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in tworker
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher rv
> = meth(*args,**kwargs)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher File
> "/usr/lib/python2.7/dist-packages/libvirt.py", line 3191, in compareCPU
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher if
> ret == -1: raise libvirtError ('virConnectCompareCPU() failed', conn=self)
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
> libvirtError: XML error: CPU feature `erms' specified more than once
> 2014-05-15 15:39:21.563 2743 TRACE oslo.messaging.rpc.dispatcher
>
>
> I'm using Ubuntu 12.04 with Openstack Icehouse.
> Version of components on compute-nodes:
> nova* 1:2014.1-0ubuntu1~cloud0
> libivrt* 1.2.2-0ubuntu13.1~cloud0
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/nova/+bug/1319710/+subscriptions
>