How to setup mysql-zrm backup retention-policy
 

Hi,

mysql-zrm is currently running successfully on my server and it has
taken last 6 months backups.

I would like to setup retention-policy in mysql-zrm and it has to keep only 1 month backup.

1.How can I achieve this?
2.I have changed the settings under mysql-zrm.conf as below and it never worked well.

...
retention-policy=1M // tried 30D as well
...
..
Do I need to run any commands to remove the oldest 5 month backup by keeping latest 1 month?

Or Do I manually remove the oldest backups?

Please help.