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Well, that is very confusing. When I check that file, it comes from python3-cinder, and that package appears to be from victoria, as I dont have a zena repo installed.
This is from the ubuntu repos, so maybe it got backported too far.

# grep 2.89 /usr/lib/python3/dist-packages/cinder/compute/nova.py
        nova = novaclient(context, api_version='2.89')

#  dpkg -S  /usr/lib/python3/dist-packages/cinder/compute/nova.py
python3-cinder: /usr/lib/python3/dist-packages/cinder/compute/nova.py

#  apt-cache showpkg python3-cinder
Package: python3-cinder
Versions:
2:17.4.0-0ubuntu1~cloud4 (/var/lib/apt/lists/ubuntu-cloud.archive.canonical.com_ubuntu_dists_focal-updates_victoria_main_binary-amd64_Packages)

# ls /etc/apt/sources.list.d
cloudarchive-stein.list
cloudarchive-stein.list.distUpgrade
cloudarchive-stein.list.save
cloudarchive-train.list
cloudarchive-train.list.save
cloudarchive-ussuri.list
cloudarchive-ussuri.list.distUpgrade
cloudarchive-ussuri.list.save
cloudarchive-victoria.list
cloudarchive-victoria.list.save
gluster-ubuntu-glusterfs-6-bionic.list
gluster-ubuntu-glusterfs-6-bionic.list.distUpgrade
gluster-ubuntu-glusterfs-6-bionic.list.save
gluster-ubuntu-glusterfs-6-focal.list
gluster-ubuntu-glusterfs-6-focal.list.save
mariadb.list
mariadb.list.distUpgrade
mariadb.list.save


________________________________________
From: Masayuki Igawa [masayuki.igawa at gmail.com]
Sent: Tuesday, May 23, 2023 12:41 AM
To: openstack-discuss at lists.openstack.org
Subject: Re: upgrade issue with nova/cinder and api version error

Hi,

> When I look at the
> /usr/lib/python3/dist-packages/cinder/compute/nova.py I can see it's
> using 2.89 in get_server_volume
>
>  def get_server_volume(context, server_id, volume_id):
>         # Use microversion that includes attachment_id
>         nova = novaclient(context, api_version='2.89')
>         return nova.volumes.get_server_volume(server_id, volume_id)

It's weird for me. That function was introduced this patch[1] but it was
backported till xena not victoria.

So, I wondering if you are using mixed versioned openstack somehow.

[1] https://review.opendev.org/q/I612905a1bf4a1706cce913c0d8a6df7a240d599a

-- Masayuki Igawa

On Tue, May 23, 2023, at 01:13, Jim Kilborn wrote:
> Hello,
>
> First time posting here.
> We have been running a production openstack environment at my office
> since the kilo release. We are currently on train, and I'm trying to
> get up to a more recent version. To make it more difficult, we are on
> centos7, so having to switch to ubuntu as we update versions.
>
> The problem that I am having after updaing to victoria, is that when I
> delete a vm via horizon, the instance disappears but the cinder volume
> doesn't delete the attachment.
> It appears this is due to the following error in
> /var/log/apache2/cinder_error.log
>
> ERROR cinder.api.middleware.fault novaclient.exceptions.NotAcceptable:
> Version 2.89 is not supported by the API. Minimum is 2.1 and maximum is
> 2.87. (HTTP 406)
>
> When I look at the
> /usr/lib/python3/dist-packages/cinder/compute/nova.py I can see it's
> using 2.89 in get_server_volume
>
>  def get_server_volume(context, server_id, volume_id):
>         # Use microversion that includes attachment_id
>         nova = novaclient(context, api_version='2.89')
>         return nova.volumes.get_server_volume(server_id, volume_id)
>
> I am not sure why cinder and nova are in disagreement on the api_version.
> I have verified that they are both upgraded to the victoria release.
>
> Anyone have any ideas as to why I would be getting this error or a
> possible fix? I haven't been able to find any information on this error.
>
>
> Here are the nova package versions:
> nova-api/focal-updates,now 2:22.4.0-0ubuntu1~cloud3 all [installed]
> nova-common/focal-updates,now 2:22.4.0-0ubuntu1~cloud3 all [installed]
> nova-conductor/focal-updates,now 2:22.4.0-0ubuntu1~cloud3 all
> [installed]
> nova-novncproxy/focal-updates,now 2:22.4.0-0ubuntu1~cloud3 all
> [installed]
> nova-scheduler/focal-updates,now 2:22.4.0-0ubuntu1~cloud3 all
> [installed]
> python3-nova/focal-updates,now 2:22.4.0-0ubuntu1~cloud3 all [installed]
> python3-novaclient/focal-updates,now 2:17.2.1-0ubuntu1~cloud0 all
> [installed,automatic]
>
> Here are the cinder package versions:
> cinder-api/focal-updates,now 2:17.4.0-0ubuntu1~cloud3 all [installed]
> cinder-common/focal-updates,now 2:17.4.0-0ubuntu1~cloud3 all
> [installed,automatic]
> cinder-scheduler/focal-updates,now 2:17.4.0-0ubuntu1~cloud3 all
> [installed]
> cinder-volume/focal-updates,now 2:17.4.0-0ubuntu1~cloud3 all [installed]
> python3-cinder/focal-updates,now 2:17.4.0-0ubuntu1~cloud3 all
> [installed,automatic]
> python3-cinderclient/focal-updates,now 1:7.2.0-0ubuntu1~cloud0 all
> [installed]
>
>
> Thanks in advance for any ideas!