VM cannot attach volume with multiattach attribute

asked 2018-05-22 03:42:18 -0500

yafeng gravatar image

updated 2018-05-22 03:43:10 -0500

Create multiattach volume:

$ cinder type-create multiattach

$ cinder type-key multiattach set multiattach="<is> True"

$ cinder create <volume_size> --name <volume_name> --volume-type <volume_type_uuid>

When attaching volume to VM, error log is printed: ERROR oslo_messaging.rpc.server MultiattachNotSupportedByVirtDriver: Volume 5189e65a-6573-4823-9061-2e9bd08df272 has 'multiattach' set, which is not supported for this instance.

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MultiattachNotSupportedByVirtDriverindicates that the compute node hosting the instance doesn't support multiattach volumes. Multiattach is supported by libvirt, starting with Queens (https://specs.openstack.org/openstack...).

Bernd Bausch gravatar imageBernd Bausch ( 2018-05-22 04:18:50 -0500 )edit

You also need to specify Nova microversion 2.60 when attaching (see http://git.openstack.org/cgit/opensta...).

Bernd Bausch gravatar imageBernd Bausch ( 2018-05-22 04:23:37 -0500 )edit

I'm new to openstack. Could you tell me how to check if Nova microversion 2.60 already exists? If not, how to upgrade?

yafeng gravatar imageyafeng ( 2018-05-22 21:39:35 -0500 )edit

It exists in Queens. You have to explicitly request it with the openstack client’s command line option --os-compute-api-version 2.60, or by setting the environment variable OS_COMPUTE_API_VERSION to 2.60. If you think this should be better documented, I agree.

Bernd Bausch gravatar imageBernd Bausch ( 2018-05-22 21:53:08 -0500 )edit

I installed openstack on one single VM with packstack.

rpm -qa | grep nova


It's not Queen? the latest openstack version?

yafeng gravatar imageyafeng ( 2018-05-22 22:36:57 -0500 )edit