** Changed in: nova Status: Fix Committed => Fix Released ** Changed in: nova Milestone: None => kilo-3
-- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1082414 Title: Live migration between hosts with differents CPU models fails Status in OpenStack Compute (Nova): Fix Released Bug description: When trying to migrate an instance from a new compute node to an older compute node (hardware-wise), nova-computes fails saying that the CPU models are incompatible and leaves the instance in Error Status. I did specify the CPU model in instances with the options : libvirt_cpu_mode=custom libvirt_cpu_model=kvm64 While it seems normal to refuse migration when libvirt_cpu_mode is set to host-model or host-passthrough, setting it to custom and using kvm64 in instances should not impact CPU compatibility between hosts. Migrating the other way around (old to new) works correctly, mainly because of a superseeding set of instructions. I'm using the Folsom Ubuntu packaged release of nova-compute on Ubuntu 12.10. Edit : Adding stacktrace MSG_ID is fe5d9a7c1a634d7f9c0270e35fed083b from (pid=2363) multicall /usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/amqp.py:354 [req-0512c53b-1b31-4924-a7d8-1ab57505ca0b ac90b7751f7f4da78f238916f3d01788 0173fc0a9e3d42caa34659f84ee7cb7c] Live migration of instance 97177534-6947-4756-9db5-b92fd4e504df to host os-node1 failed Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/contrib/admin_actions.py", line 282, in _migrate_live disk_over_commit, host) File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 94, in inner return f(self, context, instance, *args, **kw) File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 1960, in live_migrate disk_over_commit, instance, host) File "/usr/lib/python2.7/dist-packages/nova/scheduler/rpcapi.py", line 96, in live_migration dest=dest)) File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/proxy.py", line 80, in call return rpc.call(context, self._get_topic(topic), msg, timeout) File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/__init__.py", line 102, in call return _get_impl().call(cfg.CONF, context, topic, msg, timeout) File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/impl_kombu.py", line 712, in call rpc_amqp.get_connection_pool(conf, Connection)) File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/amqp.py", line 368, in call rv = list(rv) File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/amqp.py", line 336, in __iter__ raise result RemoteError: Remote error: InvalidCPUInfo_Remote Unacceptable CPU info: CPU doesn't have compatibility. 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions 0 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions Refer to http://libvirt.org/html/libvirt-libvirt.html#virCPUCompareResult Traceback (most recent call last): 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/amqp.py", line 275, in _process_data rval = self.proxy.dispatch(ctxt, version, method, **args) 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/dispatcher.py", line 145, in dispatch return getattr(proxyobj, method)(ctxt, **kwargs) 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 117, in wrapped temp_level, payload) 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__ self.gen.next() 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 92, in wrapped return f(*args, **kw) 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2076, in check_can_live_migrate_destination instance, block_migration, disk_over_commit) 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2238, in check_can_live_migrate_destination self._compare_cpu(source_cpu_info) 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2367, in _compare_cpu raise exception.InvalidCPUInfo(reason=m % locals()) 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions InvalidCPUInfo: Unacceptable CPU info: CPU doesn't have compatibility. 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions 0 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions Refer to http://libvirt.org/html/libvirt-libvirt.html#virCPUCompareResult 2012-11-14 22:33:41 TRACE nova.api.openstack.compute.contrib.admin_actions To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1082414/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp