Public bug reported:
On 14.04 ubuntu with icehouse bug fix release (2014.1.1), nova
"interface-attach" command is failing (used to work well in previous
versions), while trying to attach an interface to a live VM.
Here is the exception in the nova-compute.log file:
2014-07-25 13:55:07.762 8546 ERROR nova.virt.libvirt.driver
[req-e55e6443-9067-44fd-b0bc-21d102307c2a 03a68cb6d8354bbbae9011bacacea4f8
fde333f66694463ea8f2ff994d97998a] [instance:
759578c6-0d08-4bb9-b571-686296d07059] attaching network adapter failed.
2014-07-25 13:55:08.161 8546 ERROR oslo.messaging.rpc.dispatcher [-] Exception
during message handling: <nova.objects.instance.Instance object at
0x7fe48cfcce50>
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher Traceback
(most recent call last):
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher File
"/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 133,
in _dispatch_and_reply
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher
incoming.message))
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher File
"/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 176,
in _dispatch
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher return
self._do_dispatch(endpoint, method, ctxt, args)
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher File
"/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 122,
in _do_dispatch
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher result =
getattr(endpoint, method)(ctxt, **new_args)
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 393, in
decorated_function
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher return
function(self, context, *args, **kwargs)
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 4344, in
attach_interface
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher
self.driver.attach_interface(instance, image_meta, network_info[0])
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher File
"/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1423, in
attach_interface
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher raise
exception.InterfaceAttachFailed(instance)
2014-07-25 13:55:08.161 8546 TRACE oslo.messaging.rpc.dispatcher
InterfaceAttachFailed: <nova.objects.instance.Instance object at 0x7fe48cfcce50>
I modified the nova/virt/libvirt/driver.py to add a LOG.exception() to
track where and why the interface failed and I saw the following
exception:
2014-07-25 13:56:23.878 7143 ERROR nova.virt.libvirt.driver
[req-aa938b8a-f31d-4b85-8d29-291bc3acd2ba 03a68cb6d8354bbbae9011bacacea4f8
fde333f66694463ea8f2ff994d97998a] attach failed
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver Traceback (most
recent call last):
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver File
"/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1418, in
attach_interface
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver
virt_dom.attachDeviceFlags(cfg.to_xml(), flags)
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver File
"/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 179, in doit
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver result =
proxy_call(self._autowrap, f, *args, **kwargs)
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver File
"/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in proxy_call
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver rv =
execute(f,*args,**kwargs)
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver File
"/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in tworker
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver rv =
meth(*args,**kwargs)
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver File
"/usr/lib/python2.7/dist-packages/libvirt.py", line 513, in attachDeviceFlags
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver if ret == -1:
raise libvirtError ('virDomainAttachDeviceFlags() failed', dom=self)
2014-07-25 13:56:23.878 7143 TRACE nova.virt.libvirt.driver libvirtError:
internal error: unable to execute QEMU command 'getfd': No file descriptor
supplied via SCM_RIGHTS
Compute node setup:
1) Release of ubuntu:
Description: Ubuntu 14.04 LTS
Release: 14.04
2) dpkg --list | grep qemu
ii ipxe-qemu 1.0.0+git-20131111.c3d1e78-2ubuntu1 all
PXE boot firmware - ROM images for qemu
ii qemu-keymaps 2.0.0+dfsg-2ubuntu1.1 all
QEMU keyboard maps
ii qemu-kvm 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU Full virtualization on x86 hardware (transitional package)
ii qemu-system 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU full system emulation binaries
ii qemu-system-arm 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU full system emulation binaries (arm)
ii qemu-system-common 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU full system emulation binaries (common files)
ii qemu-system-mips 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU full system emulation binaries (mips)
ii qemu-system-misc 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU full system emulation binaries (miscelaneous)
ii qemu-system-ppc 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU full system emulation binaries (ppc)
ii qemu-system-sparc 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU full system emulation binaries (sparc)
ii qemu-system-x86 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU full system emulation binaries (x86)
ii qemu-utils 2.0.0+dfsg-2ubuntu1.1
amd64 QEMU utilities
dpkg --list | grep nova
ii nova-common 1:2014.1.1-0ubuntu1 all
OpenStack Compute - common files
ii nova-compute 1:2014.1.1-0ubuntu1 all
OpenStack Compute - compute node base
ii nova-compute-kvm 1:2014.1.1-0ubuntu1 all
OpenStack Compute - compute node (KVM)
ii nova-compute-libvirt 1:2014.1.1-0ubuntu1 all
OpenStack Compute - compute node libvirt support
ii nova-network 1:2014.1.1-0ubuntu1 all
OpenStack Compute - Network manager
ii python-nova 1:2014.1.1-0ubuntu1 all
OpenStack Compute Python libraries
ii python-novaclient 1:2.17.0-0ubuntu1 all
client library for OpenStack Compute API
** Affects: nova (Ubuntu)
Importance: Undecided
Status: New
** Tags: 14.04 nova-compute qemu
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https://bugs.launchpad.net/bugs/1348830
Title:
nova interface attach command fails in 14.04 with 2014.1.1: error:
"libvirtError: internal error: unable to execute QEMU command 'getfd':
No file descriptor supplied via SCM_RIGHTS"
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