I have recently done Victoria to Wallaby upgrade on my openstack-ansible installation.

After the upgrade we observe that  /var/log/libvirt/ size on all the computes was growing due to libvirtd.log file.

Further checking this file it can be seen that there are debug logs.

2025-01-19 11:15:20.817+0000: 2943565: debug : virNetlinkEventCallback:862 : dispatching to max 0 clients, called from event watch 7
2025-01-19 11:15:20.817+0000: 2943565: debug : virNetlinkEventCallback:876 : event not handled.
2025-01-19 11:15:20.821+0000: 2943605: debug : udevHandleOneDevice:1492 : udev action: 'add'
...

libvirtd configuration file on compute shows log_level=1

 cat libvirtd.conf
# Ansible managed

# enabling debug mode according to http://wiki.libvirt.org/page/DebugLogs
log_level = 1
log_filters="3:remote 4:event 3:json 3:rpc"
log_outputs="1:file:/var/log/libvirt/libvirtd.log"
listen_tls = 0
listen_tcp = 0
unix_sock_group = "libvirt"
unix_sock_ro_perms = "0777"
unix_sock_rw_perms = "0770"
auth_unix_ro = "none"
auth_unix_rw = "none"
auth_tcp = "sasl"

No related parameter was changed/updated in user_variable file during the upgrade?

Any information what could have enabled the debug logs for libvirtd on all the computes?

Also how can I turn-off this using the openstack-ansible and what could be impact during the procedure?

Regards