If the kb article 1540 at Nutanix to clean up the CVMs does not help, the clickstream folder can be cleaned up.
please run the following command on the affected cvm
find ~/data/prism/clickstream -name 'client_tracking*' -mmin +7200 -type f -exec /usr/bin/rm '{}' +
and cleanup /data/prism audit-logs with e.g. (in folder /data//prism)
/bin/rm api_audit-2022*