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libvirtError: invalid argument: could not find capabilities for domaintype=kvm??

asked 2016-12-02 04:52:03 -0600

vathanlal gravatar image

Hi I created a HA-openstack newton cluster. When I tired to launch an instance iam getting error like 

2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [req-e0dd8dc1-3349-4f16-9153-63cd6322d0c5 2cfe6360fd8d494c80ee2740b901e1e1 20d65370e91d428d8d83abb84b5c2c21 - - -] [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a] Instance failed to spawn
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a] Traceback (most recent call last):
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2218, in _build_resources
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     yield resources
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2064, in _build_and_run_instance
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     block_device_info=block_device_info)
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2779, in spawn
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     block_device_info=block_device_info)
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4923, in _create_domain_and_network
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     xml, pause=pause, power_on=power_on)
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4849, in _create_domain
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     guest = libvirt_guest.Guest.create(xml, self._host)
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 127, in create
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     encodeutils.safe_decode(xml))
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     self.force_reraise()
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     six.reraise(self.type_, self.value, self.tb)
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 123, in create
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     domain = host.write_instance_config(xml)
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/host.py", line 981, in write_instance_config
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]     return self.get_connection().defineXML(xml)
2016-12-02 10:05:55.179 6539 ERROR nova.compute.manager [instance: b621b8c3-f155-4583-84fa-77dc4eefcd1a]   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line ...
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Please post

cat nova.conf | grep "virt_t"
lsmod | grep kvm
dbaxps gravatar imagedbaxps ( 2016-12-02 05:33:54 -0600 )edit

On Compute Node.

dbaxps gravatar imagedbaxps ( 2016-12-02 05:45:02 -0600 )edit

virt_type=kvm

vathanlal gravatar imagevathanlal ( 2016-12-03 07:24:21 -0600 )edit

lsmod | grep kvm ?

dbaxps gravatar imagedbaxps ( 2016-12-03 08:16:11 -0600 )edit
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5 answers

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answered 2017-06-16 01:06:45 -0600

benhart gravatar image

Those kind of errors occur some times and it's important to fix it as quick as possible in order to keep your code safety. Those errors can be handled right after they are detected. If it's getting too hard for you there are programs that help doing that, such as checkamrx and others that work fine. Wish you well. Ben.

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If it's getting too hard for you there are programs that help doing that, such as checkamrx and others that work fine. Wish you well. Ben. More information click here https://www.klantenservicenummer.co/instagram-nederland/ (Instagram Nummer)

haleybrown gravatar imagehaleybrown ( 2020-06-15 00:58:09 -0600 )edit
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answered 2020-06-08 22:34:43 -0600

victorlee gravatar image

sudo apt-get install qemu-kvm and restart the nova-compute process, it works for me.

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answered 2016-12-05 16:53:31 -0600

vern gravatar image

The libvirt error "could not find capabilities for domaintype=kvm" indicates a lack of kvm support on the host. This could be a lack of hardware support or it could mean the kvm/kvm_intel/kvm_amd kernel drivers are not loaded (as dbaxps was alluding to in the comments). If the drivers are not loading, it could be because you don't have kvm installed.

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answered 2016-12-05 23:25:55 -0600

Praveen N gravatar image

Ensure you have enabled virtualization flags for your hardware. Also In nova-compute.conf (in Ubuntu) or nova.conf(CentOS/RHEL) change virt_type=qemu and restart nova-compute service, nova-scheduler service. Then try to launch instance and check.

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answered 2016-12-08 03:51:12 -0600

vathanlal gravatar image

This error is due to the fact that kvm modules are not loaded in my system.. I added KVM amd module and that solved the issue.. Thanks all for the help..

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Asked: 2016-12-02 04:52:03 -0600

Seen: 12,126 times

Last updated: Jun 08 '20

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