Comment 21 for bug 1941706

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Radosław Piliszek (yoctozepto) wrote : Re: kolla wallaby: restarting nova_libvirt causes vm shutdown

Ignazio, please apply the following -> https://review.opendev.org/c/openstack/kolla-ansible/+/806476
That fixes the issue.

The issue was because of Docker's behaviour with cgroupsv1, it actually cleaned them up on container exit.
That's why Debian 11, using cgroupsv2, was able to avoid this issue.